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70results about How to "Guarantee work reliability" patented technology
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Bipolar solid ablation type plasma accelerator
ActiveCN106640568ASimple structureEasy to implementMachines/enginesUsing plasmaCapacitanceControl switch
The invention belongs to a space electric propulsion device, and particularly discloses a bipolar solid ablation type plasma accelerator. A positive pole of a direct-current power supply of the accelerator is connected with one end of each of a primary high-voltage control switch and a secondary high-voltage control switch; the other end of the primary high-voltage control switch is connected with one end of each of a primary discharge capacitor and a primary electrode; the other end of the primary discharge capacitor is connected with each of a negative pole of the direct-current power supply and a cathode of a primary silicon controlled rectifier; an anode of the primary silicon controlled rectifier is connected with the other end of the primary electrode; the other end of the secondary high-voltage control switch is connected with one end of each of a secondary discharge capacitor and a secondary electrode; the other end of the secondary discharge capacitor is connected with each of the negative pole of the direct-current power supply and a cathode of the secondary silicon controlled rectifier; and an anode of the secondary silicon controlled rectifier is connected with the other end of the secondary electrode. According to the device, the problem of low efficiency of the solid ablation type plasma accelerator can be effectively solved.
Owner:BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
Electronic needle selecting mechanism of passive multi-arm device
ActiveCN101705556AExtended service lifeGuarantee work reliabilityDobbiesEngineeringBiomedical engineering
An electronic needle selecting mechanism of a passive multi-arm device belongs to the technical field of textile machine and comprises a signal supply device and an execution device that consists of a first transverse needle and a second transverse needle; the signal supply device comprises a bracket, a group of electromagnetic valves and a group of transverse needle actuating devices; the amount of the group of the electromagnetic valves is equal to the total amount of the first transverse needles and the second transverse needles; all electromagnetic valves are arranged in the length direction of the bracket and used for actuating the transverse needle actuating devices; the amount of the group of the transverse needle actuating devices is equal to the total amount of the first transverse needles and the second transverse needles; and all transverse needle actuating devices are arranged on the bracket, connected with the electromagnetic valves and matched with the first transverse needles and the second transverse needles, thus actuating the first transverse needles and the second transverse needles. The electronic needle selecting mechanism prolongs the service life of the signal supply device, can ensure working reliability, stability and adaptability of the signal supply device, is beneficial to reducing usage cost, and simplifies the whole structure.
Owner:常熟纺织机械厂有限公司
Electronic needle selecting mechanism of passive multi-arm device
ActiveCN101705556BExtended service lifeGuarantee work reliabilityDobbiesEngineeringBiomedical engineering
An electronic needle selecting mechanism of a passive multi-arm device belongs to the technical field of textile machine and comprises a signal supply device and an execution device that consists of a first transverse needle and a second transverse needle; the signal supply device comprises a bracket, a group of electromagnetic valves and a group of transverse needle actuating devices; the amountof the group of the electromagnetic valves is equal to the total amount of the first transverse needles and the second transverse needles; all electromagnetic valves are arranged in the length direction of the bracket and used for actuating the transverse needle actuating devices; the amount of the group of the transverse needle actuating devices is equal to the total amount of the first transverse needles and the second transverse needles; and all transverse needle actuating devices are arranged on the bracket, connected with the electromagnetic valves and matched with the first transverse needles and the second transverse needles, thus actuating the first transverse needles and the second transverse needles. The electronic needle selecting mechanism prolongs the service life of the signal supply device, can ensure working reliability, stability and adaptability of the signal supply device, is beneficial to reducing usage cost, and simplifies the whole structure.
Owner:常熟纺织机械厂有限公司
Pressure control valve type engine crankcase ventilator
ActiveCN101865008AIncrease vacuumAvoid wastingMachines/enginesCrankcase ventillationWhole bodyCylinder head
The invention discloses a device for carrying out oil and gas separation and ventilation on an engine crankcase. A sandwich layer type steam cylinder cover is formed by an outer case and an inner case, a pressure valve seat, a support framework, a valve body of a pressure valve, a pressure spring, a pressure valve cover and an air outlet pipe form an oil and gas separation ventilator, the whole body of the oil and gas separation ventilator is connected with the crankcase, the pressure valve seat and the valve seat of the pressure valve form an inner cavity, the end wall of the inner cavity is provided with an air outlet pipe connected with the air inlet pipe of the engine, the valve body of the pressure valve is fixed on the pressure valve seat, the center of the valve body of the pressure valve is provided with the pressure spring, the support framework is arranged on the valve body of the pressure valve, the pressure valve cover is arranged on the upper end surface of the support framework and is fixed to the pressure valve seat in a sealed way, the upper end of the crankcase is provided with an oil refill opening, and the bottom surface of the pressure valve seat is provided with two small holes communicated with the inner case of the crankcase. The invention recovers and reuses combustible mixed gas and waste gas entering the crankcase, is favorable for improving the economical efficiency of the engine, can reduce the discharge pollution of the engine, and can ensure the stability of the engine oil lubrication of the engine under various work conditions.
Owner:东风朝阳朝柴动力有限公司
On-chip inductor based on graphene/metal composite wire and preparation method
InactiveCN105118821AHigh quality factorHigh thermal conductivitySemiconductor/solid-state device detailsSolid-state devicesSingle layer grapheneCvd graphene
The invention discloses an on-chip inductor based on a graphene / metal composite wire and a preparation method, and belongs to the technical field of microelectronic devices. The on-chip inductor includes a substrate, an inductance coil formed by a graphene / metal composite wire is arranged on the substrate, and the graphene / metal composite wire includes a metal wire and a graphene film that wraps an outer surface of the metal wire. The preparation method includes the steps of: (1) depositing a metal film on a substrate, an insulating substrate on which graphene is transferred or a semiconductor substrate where silicon dioxide grows, and etching the metal film into a metal inductance coil; and (2) covering the metal inductance coil with a graphene film, thereby obtaining the on-chip inductor based on the graphene / metal composite wire. The on-chip inductor based on the graphene / metal composite wire and the preparation method have the advantages that the quality factor, thermal conductivity, oxidation resistance, current-carrying capability and high-frequency working performance of the on-chip inductor are improved, single-layer graphene wraps the surface of the metal wire, and has little influence on the size of the on-chip inductor, the implementation process is simple, and very strong practicability is achieved.
Owner:WUHAN UNIV
Braking energy storage device for pure electric bus and working method thereof
ActiveCN108501926AImprove condensate blowdown capacityImprove utilization efficiencyAir treatment devicesReservoir arrangementsTemperature controlAxial compressor
The invention discloses a braking energy storage device for a pure electric bus and a working method thereof. The braking energy storage device for the pure electric bus comprises an air compressor, acopper coil tube, a condenser, a dryer, a four loop, a foot operated brake valve, a hand brake valve, a regenerated air reservoir, a front braking air reservoir, an auxiliary air reservoir, a hand braking air reservoir, a rear braking air reservoir and a controller; the air compressor, the copper coil tube, the condenser, the dryer and the regenerated air reservoir are connected with each other in sequence through copper pipes and mutually form a main air source pipeline; the four loop, the front braking air reservoir, the auxiliary air reservoir, the hand braking air reservoir, the rear braking air reservoir, the foot operated brake valve, the hand brake valve and the controller are connected with each other through nylon pipes to form a braking energy supply assembly; and according to the working method, condensation and sewage draining of the pipeline are realized in an electric controlled and temperature controlled manner; and the controller controls the air compressor to start and stop. According to the braking energy storage device for the pure electric bus and the working method thereof, the working efficiency of a braking system is enhanced on the basis of guaranteeing thesafety and reliability of the whole braking system, and the energy utilization efficiency is enhanced.
Owner:ANHUI ANKAI AUTOMOBILE
Angle sensor for automobile steering wheel
InactiveCN102506700AAchieve improvementAccurate collectionUsing electrical meansEngineeringTemperature resistance
The invention provides a rotation angle sensor for an automobile steering wheel, particularly an angle sensor for the automobile steering wheel based on a radially magnetized thin film. The angle sensor comprises a master gear (1) driven by a master rotating shaft of the automobile steering wheel, a pinion (2) and a bull wheel (3) which are engaged with the master gear (1) and made of ceramic materials, two giant magnetic resistance induction chips arranged on a circuit board (6), and a micro processor, wherein the two giant magnetic resistance induction chips face towards the surfaces of the bull wheel and the pinion respectively, and are connected with the micro processor through serial peripheral interfaces (SPI); and the bull wheel and the pinion are made of the ceramic materials, and are coated with high-magnetism medium thin films. The bull wheel and the pinion made of the ceramic materials have high anti-abrasion performance, high-temperature resistance, high anti-corrosion performance and high reliability, can be relatively thin, are easy to mount and fix, and can be produced in a large batch; furthermore, a magnetic thin film medium has the advantages of small volume, high magnetic intensity, high magnetic field directivity, simple design, high reliability and the like.
Owner:WUHAN UNIV OF TECH
Zigbee-and-mobile-technology-based building renewable energy heating system remote monitoring system and method
InactiveCN102236350ALow costAchieve remote monitoringNetwork topologiesTransmissionMonitoring systemEngineering
The invention relates to a Zigbee-and-mobile-technology-based building renewable energy heating system remote monitoring system and a Zigbee-and-mobile-technology-based building renewable energy heating system remote monitoring method, and also relates to a building renewable energy heating system remote monitoring system and a building renewable energy heating system remote monitoring method based on a Zigbee technology, a bus technology and a mobile technology. The Zigbee-and-mobile-technology-based building renewable energy heating system remote monitoring system comprises a building renewable energy heating system, a user control panel of the building renewable energy heating system, and a computer running monitoring platform, and further comprises a wireless data transmission system and a heating system running monitoring control panel, wherein the wireless data transmission system adopts the mobile technology and the Zigbee technology with or without a bus. Due to the adoption of a mobile technology communication way of one-way or two-way data transmission, the running error information of the building renewable energy heating system can be conveniently monitored, and the communication reliability of the remote monitoring system and the wireless data transmission system thereof is improved.
Owner:潘戈
LED lamp
ActiveCN102691912AGuarantee work reliabilityGuaranteed cooling effectPoint-like light sourceLighting heating/cooling arrangementsThermodynamicsEngineering
An LED lamp belongs to the technical field of illumination equipment, and includes a lamp holder, a lampshade, an LED light source plate, a diffusion cover, a first heat dissipation sleeve, a separation plate, an LED drive power supply, a second heat dissipation sleeve, and a tail cover, wherein heat dissipation strips are formed on the surface of one side, and a heat dissipation cavity is formed between every two adjacent heat dissipation strips; the lampshade is fixed with the lamp holder; the LED light source plate is fixed with the lamp holder, and an LED light source is arranged on the LED light source plate; the diffusion cover is fixed with the lamp holder; the first heat dissipation sleeve is matched and connected with the lamp holder, and first heat dissipation fins are formed on the outer wall; the separation plate is fixed with the first heat dissipation sleeve; the LED drive power supply is arranged on the separation plate, and is electrically connected with the LED light source; the second heat dissipation sleeve is fixed with the separation plate, second heat dissipation fins are formed on the outer wall, and the LED drive power supply corresponds to the inside of the cavity of the second heat dissipation sleeve; and the tail cover is fixed with the second heat dissipation sleeve and is equipped with a mounting pothook. The LED lamp has the advantages of prolonging the service life, ensuring the reliability of the LED drive power supply in work, and increasing the heat dissipation area to embody eddy type heat dissipation.
Owner:江苏山水节能服务股份有限公司
Method for machining bottle-shaped shaft of large pumped storage generator motor
ActiveCN111421308AReduce mistakesMeet the requirements of beating high precisionMagnetic circuit rotating partsNumerical controlEngineering
The invention discloses a method for machining a bottle-shaped shaft of a large pumped storage generator motor, and belongs to the technical field of motor shaft machining. The method is characterizedby comprising the following steps of a, boring a matching hole of the center of a large end and a transition connecting plate; b, turning an outer circle and a welding groove of the transition connecting plate, and assembling and welding the transition connecting plate into a shaft center hole in the large end of the bottle-shaped shaft; c, mounting a process dummy shaft at the large end of the bottle-shaped shaft; d, turning the process dummy shaft; e, on a working platform of a numerical control boring machine, erecting and installing the process dummy shaft to be parallel to the numericalcontrol boring machine by using angle iron, pressing a workpiece, checking by using a height gauge according to a line, pressing a gauge on the lower side surface of the machined groove by using a dial gauge, moving the machine tool away along an X axis, checking by using the height gauge according to the line, and machining a magnet yoke key groove to obtain a bottle-shaped shaft finished product. The chuck precision of a horizontal lathe does not affect the rotation center of the bottle-shaped shaft, the machining difficulty is reduced, the machining stability is guaranteed, the machining precision is improved, and machining operation is more convenient.
Owner:DONGFANG ELECTRIC MACHINERY
External-internal culvert pressure ratio optimization design method and system
ActiveCN112784380AIncrease thrustRaise the wall temperatureGeometric CADDesign optimisation/simulationCombustion chamberEngineering
The invention belongs to the technical field of aero-engine control, and particularly relates to an external-internal culvert pressure ratio optimization design method and system. The method comprises the steps that a stress application heat screen total pressure recovery coefficient, a middle state afterburner total pressure recovery coefficient and a stress application state afterburner total pressure recovery coefficient are obtained; determining a first ratio of the stress application state afterburner total pressure recovery coefficient to the stress application heat shield total pressure recovery coefficient, and determining a second ratio of the middle state afterburner total pressure recovery coefficient to the stress application heat shield total pressure recovery coefficient; and carrying out optimization design on the external-internal culvert pressure ratio of the engine by taking the condition that the design parameter of the external-internal culvert pressure ratio is located between the first ratio and the second ratio as a limiting condition. According to the invention, the mixing loss can be greatly reduced when the engine works in an intermediate state, and the engine performance is improved; a cooling air film is effectively formed in a stress application state, and the working safety of the two-dimensional nozzle is ensured.
Owner:AECC SHENYANG ENGINE RES INST
Hot air cleaning and sorting system for combined harvester and working method
ActiveCN111699845AReduce the temperatureAdjustable temperatureDrying gas arrangementsSaving energy measuresAir cleaningDiesel engine
The invention provides a hot air cleaning and sorting system for a combined harvester and a working method, and belongs to the field of agricultural machinery. The hot air cleaning and sorting systemfor the combined harvester comprises an engine heat dissipation device, an air distribution system and a cleaning and sorting device; the engine heat dissipation device transfers heat generated by anengine to the air distribution system, and the air distribution system blows the air to the cleaning and sorting device so as to carry out drying on surfaces of grains in the cleaning and sorting device; the engine heat dissipation device comprises a fan and a radiator; and the fan blows the hot air in the radiator into an air distribution chamber, a centrifugal fan in the air distribution chamberblows the hot air into the cleaning and sorting device. The cleaning and sorting device can sufficiently utilize waste heat of a diesel engine in the working process of the combined harvester to carry out cleaning and sorting on moist materials, the adverse effect of a high temperature of the engine on devices and facilities around can be reduced, the working temperature of the engine of the combined harvester can be obviously reduced, working stability and reliability of the engine are ensured, free water on the surfaces of the moist materials is rapidly removed, moisture content in the moist agricultural materials is obviously reduced, and cleaning and sorting blockage generated by moisture is avoided.
Owner:JIANGSU UNIV
Pressure Control Valve Engine Crankcase Ventilation
ActiveCN101865008BIncrease vacuumAvoid wastingMachines/enginesCrankcase ventillationCylinder headCrankcase
The invention discloses a device for separating and ventilating oil and gas in an engine crankcase. A sandwich cylinder head cover is formed by the inner shell, and an oil-gas separation and ventilation device is composed of a pressure valve seat, a supporting frame, a pressure valve body, a pressure spring, a pressure valve cover and an air outlet pipe, and is connected with the crankcase as a whole. The pressure valve seat and the pressure valve body form an inner cavity, and the end wall of the inner cavity is provided with an air outlet pipe connected to the engine intake pipe. The pressure valve body is fixed on the pressure valve seat, and the center of the pressure valve body is provided with a pressure spring. The support frame is placed on the pressure valve body, and the pressure valve cover is sealed and fixed on the end surface of the support frame and the pressure valve seat. An oil filling port is arranged on the upper end of the crankcase, and two small holes communicated with the inner shell of the crankcase are opened on the bottom surface of the pressure valve seat. The invention recycles and uses the combustible mixed gas and exhaust gas that have entered the crankcase, which is beneficial to improving the economical efficiency of the engine, reducing the emission pollution of the engine, and ensuring the stability of the engine oil lubrication under various working conditions.
Owner:东风朝阳朝柴动力有限公司
Temperature-measurement cable protection device for test and control for grain situation
ActiveCN108548617AImprove sealingAvoid cloggingElectrical apparatusThermometer applicationsControl systemGrain storage
The invention discloses a temperature-measurement cable protection device for test and control for grain situation. The device is characterized by comprising a shell, wherein an opening end is formedin the shell and is used for sleeving the end part of an outer sheath of a temperature-measurement cable with the shell; a cable storage space for containing the core wire lead end of the temperature-measurement cable is formed between the shell and the end part of the outer sheath; a wire outlet is formed in the shell, is communicated with the wire storage space and can be penetrated by the corewire lead end; and a seal part is arranged at the wire outlet. The temperature-measurement cable protection device can be used for effectively preventing dust impurities from entering the gap betweena core wire and a core wire sleeve, has a good dust-proof effect, ensures the core wire to enter and exit the core wire sleeve smoothly, so that maintenance and replacement can be performed for a corewire and a temperature sensor conveniently, the core wire lead end of a temperature-measurement cable is prevented from being broken by the impact of grain storage in-out operation, the working reliability of a grain situation test and control system can be guaranteed.
Owner:CHINA GRAIN RESERVES CORP CHENGDU GRAIN STORAGE SCI INST
Task equipment connecting mechanism
PendingCN111409843AGuaranteed reliabilityEasy assembly and disassemblyAircraft componentsFlight vehicleControl engineering
The invention discloses a task equipment connecting mechanism. The mechanism comprises an airborne end installed on an aircraft and an equipment end installed on task equipment, wherein the airborne end is provided with an electric connection port, the equipment end is provided with an electric connection head matched with the electric connection port, the airborne end is provided with a sliding groove for the equipment end to be inserted in, and an anti-falling locking mechanism for preventing the equipment end from exiting from the sliding groove is further arranged between the airborne endand the equipment end. The task equipment connecting mechanism is advantaged in that the task equipment can be quickly mounted and dismounted, different task devices can be conveniently replaced to achieve different functions, the application range is enlarged, mechanical connection and electrical connection are integrally achieved, operation is easy and rapid, connection reliability is high, safety is high, the automatic locking function is achieved, and the situation that the task devices are accidentally disengaged and fall off can be effectively avoided.
Owner:成都纵横大鹏无人机科技有限公司
Well testing blocking fork
The invention discloses a well testing blocking fork and belongs to the technical field of well testing construction tools. The well testing blocking fork comprises a body. The well testing blocking fork is characterized by further comprising a rotating shaft, a first moving block and a second moving block. The body comprises an installing section and a holding section. A first fixing base and a second fixing base are fixed to the installing section. The rotating shaft sequentially comprises a right-hand thread section, a first polish shaft section, a knurling section, a second polish shaft section and a left-hand thread section. The knurling section is located between the first polish shaft section and the second polish shaft section. The rotating shaft penetrates through the first fixingbase and the second fixing base. The right-hand thread section and the first moving block are connected through a thread. The left-hand thread section and the second moving block are connected through a thread. The first moving block is in sliding connection with the installing section through a first sliding block. The second moving block is in sliding connection with the installing section through a second sliding block. The well testing blocking fork is simple in structure, reasonable in design, high in flexibility and capable of greatly reducing labor intensity, and well testing instruments of various sizes can be clamped to a blowout preventing pipe opening in series conveniently and flexibly.
Owner:CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD +1
Motor
ActiveCN112152377AImprove cooling effectGuarantee work reliabilityMagnetic circuit rotating partsElectric machinesThermodynamicsElectric machine
The invention provides a motor. The motor comprises a casing, a rear end cover, a front end cover, a stator and at least one group of oil injection oil pipes, wherein the rear end cover and the frontend cover are respectively arranged on the rear end surface and the front end surface of the casing, the rear end cover is provided with an oil inlet pipe and a rear end cover oil way communicated with the oil inlet pipe, and the front end cover is provided with a front end cover oil way; the rear end cover oil way is communicated with the front end cover oil way through a connecting oil pipe; thestator is arranged in the shell; one of the two oil injection pipes in at least one set of oil injection pipes is installed on the rear end cover and communicated with the rear end cover through an oil way, the other oil injection pipe is installed on the front end cover and communicated with the front end cover through an oil way, and each oil injection pipe is provided with an oil injection hole penetrating through the peripheral wall of the oil injection pipe; the oil injection holes are at least used for cooling a stator core and a winding end part of the stator. According to the motor, through the stator cooling oil way and the rotor cooling oil way, cooling of the motor can be effectively achieved, the cooling effect of the motor is good, and working reliability is high.
Owner:HYCET TRANSMISSION SYST (JIANGSU) CO LTD BAODING RES & DEV BRANCH
Pipe clamp valve
PendingCN112413167ARealize the purpose of online detectionTimely remind maintenance personnel to troubleshoot as soon as possibleDiaphragm valvesEngine diaphragmsDouble-walled pipeEngineering
The invention belongs to the technical field of valves, and particularly relates to a pipe clamp valve. The pipe clamp valve comprises a valve body with a built-in flow pipe, and a medium flows in from an inlet of the flow pipe and is discharged from an outlet of the flow pipe; the valve body is further provided with a switch part used for controlling the flow pipe to be opened and closed; the pipe clamp valve is characterized in that the flow pipe is a double-layer pipe body and comprises a lining pipe serving as an inner pipe body and a protection pipe serving as an outer pipe body, and thelining pipe and the protection pipe are coaxially arranged in a sleeving manner; and the valve body is further provided with a sensing assembly used for monitoring whether media exist in a sealing gapbetween the lining pipe and the protection pipe or not. According to the pipe clamp valve, not only can the function of preventing medium leakage be achieved when the lining pipe is broken, but alsothe purpose of on-line detection of the leakage condition of the lining pipe can be achieved, so that maintenance personnel can be timely reminded of troubleshooting as soon as possible, and the use safety and reliability of the pipe clamp valve can be effectively guaranteed.
Owner:HEFEI UNIV OF TECH
Intermediate-infrared solid laser
InactiveCN107946884AGuarantee work reliabilitySimple structureOptical resonator shape and constructionActive medium materialOptoelectronics
The invention relates to an intermediate-infrared solid laser, and the laser comprises a pump laser source, a polarizer, a parabolic surface focusing lens, a resonant cavity which consists of two opposite concave lenses, and a solid medium disposed in the resonant cavity, wherein the solid medium is a bonding crystal which is formed by the bonding of a thulium-doped yttrium aluminate crystal and achromium-doped zinc selenide crystal. A temperature control system circuit board comprises a temperature sensor, a temperature control circuit, and a TEC chip. The solid medium is disposed on the TECchip, and the temperature sensor collects a real-time temperature signal of the solid medium, and transmits the real-time temperature signal to the temperature control circuit. The temperature control circuit controls the work current of the TEC chip according to the real-time temperature signal of the solid medium, and achieves the temperature control of the solid medium. The laser is provided with the temperature control system circuit board, so the laser can achieve the precise control of the temperature of the solid medium, and guarantees the work reliability of the solid medium.
Owner:成都心无界光电技术有限公司
Flat plate-type dryer based on solar energy
PendingCN106196994AAvoid passingAdequate fitSolar heat devicesDrying gas arrangementsEngineeringMechanical engineering
The invention discloses a flat plate-type dryer based on solar energy, and belongs to the technical field of drying equipment. The flat plate-type dryer comprises a box body, a light-transmitting cover plate and an absorber plate. A spring separation device is arranged in a drying cavity and connected with a supporting plate. The spring separation device comprises a shell and a piston. One end of the piston is connected with a push rod, and the other end of the piston is connected with an L-shaped pull rod. The push rod penetrates through the shell to be connected with the supporting plate. The L-shaped pull rod is sleeved with a spring. A sliding chute is formed in the side wall of the box body. Limiting bayonets are arranged on the sliding chute. The flat plate-type dryer further comprises a clamping device. The clamping device comprises a U-shaped elastic sheet and an adjusting bolt. The U-shaped elastic sheet is formed by a first clamping piece, a connecting piece and a second clamping piece in an integrated mode. The adjusting bolt is located outside the box body. By the adoption of the flat plate-type dryer, the phenomenon that heat is excessively transmitted to a dried object by the absorber plate can be effectively prevented, and burning of the dried object is avoided. Meanwhile, the dried object can be guaranteed to make good contact with the absorber plate when the amount of heat on the absorber plate is small, and the drying effect and efficiency are ensured.
Owner:西藏大船投资集团有限公司
Preparation method of through hole structure and preparation method of three-dimensional memory
InactiveCN110707009ASo as not to damageGuarantee work reliabilitySolid-state devicesSemiconductor/solid-state device manufacturingMaterials scienceMolecular physics
The embodiment of the invention provides a preparation method of a through hole structure. The preparation method comprises the following steps: providing a substrate structure comprising a first stacking layer; etching the first stacking layer to form a first through hole; forming an epitaxial growth layer at the bottom of the first through hole; forming an etching barrier layer in the first through hole, wherein the etching barrier layer at least covers the surface of the epitaxial growth layer; forming a filling structure in the first through hole; forming a second stacking layer on the first stacking layer; etching the second stacking layer to form a second through hole communicated with the first through hole; etching to remove the filling structure in the first through hole; whereinthe etching selection ratio between the material of the etching barrier layer and any one of the following materials meets the etching barrier requirements: the second stacking layer, the filling structure and the oxide layer of the filling structure. In addition, the embodiment of the invention further provides a preparation method of the three-dimensional memory, and the preparation method comprises the steps in the preparation method of the through hole structure.
Owner:YANGTZE MEMORY TECH CO LTD
Megawatt level low speed direct-driven wind turbine generator shaft system device
ActiveCN110486237AGood rigidityReduce distortionFinal product manufactureShaftsWind drivenWind force
The invention discloses a megawatt level low speed direct-driven wind turbine generator shaft system device, and belongs to the technical field of wind driven generators. The megawatt level low speeddirect-driven wind turbine generator shaft system device comprises a fixed shaft and a rotary shaft, and is characterized in that an upwind bearing and a downwind bearing are arranged between the fixed shaft and the rotary shaft, cross sections of the fixed shaft and the rotary shaft are in a taper shape, a large flange plate is arranged at one end of the rotary shaft, a rotary shaft reinforcementflange plate is arranged at the other end of the rotary shaft, a bearing pressure ring is fixed on the rotary shaft reinforcement flange plate, the cross section of the fixed shaft is of a two-section type gradual change structure, a part, located between the upwind bearing and a fixed end of a main machine frame, of the fixed shaft, forms a fixed shaft taper face 1, and the other part, located between the downwind bearing and the fixed end of the main machine frame, of the fixed shaft, forms a fixed shaft taper face 2. The megawatt level low speed direct-driven wind turbine generator shaft system device is uniform in stress distribution under a large load condition, enables the shafts to be small in deformation, can inhibit deformation of air gaps well, reduces the designed size of the air gaps, improves a power factor of an electric generator, and then improves overall performance of the electric generator and a generator set, reduces overall weight and production cost of the electric generator, and has the characteristics of being good in rigidity and low in weight.
Owner:DONGFANG ELECTRIC MACHINERY
Flying rod sheet fixing seat, flying rod sheet fixing structure and cavity filter
PendingCN111416184AGuaranteed stabilityImprove binding stabilityWaveguide type devicesStructural engineeringMechanical engineering
Owner:DONGGUAN ACE TECH
A method for uniform heating of high-frequency remelting structure of water-cooled wall tube row coating
ActiveCN111678114BGuaranteed service lifeGuarantee work reliabilityMolten spray coatingBoiler water tubesCoated surfaceSand blasting
Owner:JIANGSU KEHUAN INNOVATIVE MATERIAL CO LTD +1
Bonding bolt mechanism for fixing automotive wiring harness bonding terminal
ActiveCN102324631BGuarantee work reliabilitySolve the disadvantages of time-consuming and labor-intensiveScrewsClamped/spring connectionsEngineeringScrew thread
The invention relates to a bonding bolt mechanism for fixing an automotive wiring harness bonding terminal. The upper part of a bonding bolt is a screw cap, the middle part of the bonding bolt is a rod shank, and the lower part of the bonding bolt is a stud, wherein the rod shank at the middle part is sleeved with a spring washer and a flat washer; and two axially-symmetrical side faces of the stud are flat planes, and the lower end part of the stud is a reverse cone frustum of which a reverse circular conical surface is evenly provided with three oblique grooves and the three oblique grooves are axial grooves. In the bonding bolt mechanism, the oblique grooves at the lower end of the stud of the bonding bolt and a stud structure are utilized to extrude and cut paints on threads in projection welding nuts without manually scraping the paints and coating vaseline, thus not only ensuring the working reliability of the bonding, but also greatly simplifying the assembly technology, and preferably solving the defect of time and labor waste in the existing bonding technology.
Owner:ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
Valve special for pneumatic conveying
The invention provides a valve special for pneumatic conveying and relates to the technical field of special valves. The problems that the sealing performance of a piston and a valve main body cannot be improved under the action of airflow through structural improvement, the air leakage and contact with the hand of an operator cannot be avoided through structural improvement, and automatic locking of an adjusting screw cannot be achieved at the same time through the avoiding structure are solved. The valve special for pneumatic conveying comprises a valve body. The valve body is in threaded connection with a connecting pipe, and the valve body is further in threaded connection with a base. A sliding rod is welded to the top end face of a piston head, the sliding rod is of a stepped shaft structure, and the sliding rod is connected into the sliding groove in a sliding manner. The sliding rod is sleeved with an elastic piece B, and the elastic piece B is of an annular structure. The outer diameter of the elastic piece B is equal to the outer diameter of the piston head, and the elastic piece B forms an auxiliary sealing structure of the piston, so that compression of the elastic piece B can be achieved under the resistance effect of air pressure, and then auxiliary sealing is achieved.
Owner:ZHEJIANG GUTE PNEUMATIC MACHINERY
A Well Test Blocking Fork
ActiveCN111335835BSimple structureReasonable designBorehole/well accessoriesRotational axisOptical axis
The invention discloses a well testing retaining fork, which belongs to the technical field of well testing construction tools. The first fixed seat and the second fixed seat are fixed on the installation section, and the rotating shaft includes a positive thread section, a first optical axis section, a knurled section, a second optical axis section and a reverse thread section in turn, and the knurled section is located on the first optical axis section. Between the shaft section and the second optical axis section, the rotation shaft runs through the first fixed seat and the second fixed seat, the positive thread section is threaded with the first movable block, and the reverse thread section is threaded with the second movable block, The first movable block is slidably connected to the installation section through the first slider, and the second movable block is slidably connected to the installation section through the second slider. The invention is simple in structure and reasonable in design, can conveniently and flexibly clamp well testing instruments of various sizes on the blowout preventer nozzle, has strong flexibility, and can greatly reduce labor intensity.
Owner:CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD +1
An anti-single ring lifting device
ActiveCN106968619BSingle hanging preventionImprove lifting safetyDrilling rodsDrilling casingsMarine engineeringOil drilling
The invention discloses a single-hoisting-ring hoisting prevention device and belongs to the technical field of oil drilling equipment. The single-hoisting-ring hoisting prevention device comprises stopping blocks arranged in lower slots of hoisting lugs, and is characterized in that the stopping blocks are fixed in the lower slots through first rotating shafts and provided with sensing components for monitoring the positions of hoisting rings, and trigger blocks are arranged on the inner walls of the lower slots; and the device further comprises a single-hoisting prevention component which comprises a controller, and the controller is connected with the sensing components in a radio mode and used for receiving signals sent by the sensing components to control starting and stopping of traveling blocks. The device can accurately judge whether hoisting rings on the two sides of a lift sub enter hoisting lug holes or not and then send commands for hoisting or non-hoisting, single-hoisting-ring hoisting can be effectively prevented, and hoisting safety is improved.
Owner:CHENGDU ZHUOXIN IND
High-low shifting column change-over switch
ActiveCN102054600BHigh contact capacityCompact structureVariable inductancesVariable transformersEngineeringStandardization
Owner:贵州长征电气有限公司
Remote sensing camera fpga configuration program centralized management and note update and dynamic refresh method and circuit
ActiveCN109445814BGuarantee work reliabilityEffectively complete the update loadTelevision system detailsColor television detailsComputer architectureHemt circuits
The present invention proposes a remote sensing camera FPGA configuration program centralized management, up-note update and dynamic refresh method and circuit, the method includes centralized configuration management, up-note update, dynamic refresh, solidified storage, non-volatile rewritable storage Function, it can configure and refresh the on-board SRAM FPGA of each functional circuit in the entire device. Through centralized management of each SRAM-type FPGA's pre-launch solidified program and above-mentioned storage program, the SRAM-type FPGA with the same function only needs to store one copy of program data, and the refresh data is also extracted from the program storage area to refresh the FPGA. Flexible setting of multi-chip FPGA loading configuration rules at the beginning of power-on, and the loading configuration sequence is determined according to the function priority and master-slave relationship. The definition focuses on the loading method to efficiently utilize the limited bandwidth of the satellite-ground link, flexibly and reliably upload the program, and effectively complete the update and loading of the new algorithm program.
Owner:BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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