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Reciprocating type three-cylinder plunger pump for oil and gas field
PendingCN109882372AExtend your lifeFully lubricatedPositive displacement pump componentsPositive-displacement liquid enginesEngineeringLubrication
The invention provides a reciprocating type three-cylinder plunger pump for an oil and gas field. The reciprocating type three-cylinder plunger pump comprises a gear box assembly, a power end assemblyand a hydraulic end assembly which are transmitted in sequence; and the hydraulic end assembly comprises a disc root and a plunger, the power end assembly comprises a crankshaft, a connecting rod, asliding rail and a crosshead, power is transmitted from the crosshead to the plunger, a pull rod and a fender are arranged between the plunger and the crosshead, the pull rod is fixed on the cross head, the plunger is fixed to the pull rod, the fender is located between the pull rod and the plunger and fixed with the plunger, and the outer diameter of the fender is larger than that of the plungerand the pull rod. The reciprocating type three-cylinder plunger pump can solve the problems that a working medium in a hydraulic end assembly in the prior art is poured into a power end assembly alongthe plunger, a packing is inconvenient to replace, and a connecting rod large-head bearing bush is insufficient in lubrication and the like.
Owner:YANTAI JEREH PETROLEUM EQUIP & TECH
Reciprocal and rotary type incorporated frictional wear test machine
InactiveCN1595100ANo need to disassembleGuaranteed accuracyInvestigating abrasion/wear resistanceCircular discWear testing
This invention discloses two kinds of friction wearing testing machine of integration of reciprocating and rotating, which comprises base socket , reciprocating structure, rotating structure and upper-specimen control device, wherein, the reciprocating structure comprises reciprocating motor, slide block, slide rail, crank, connecting bar; and the rotating structure comprises rotating drive motor and rotating disc; and the upper-specimen control device comprises spring arm, guide rail and slide holder or spring arm , rotating parts and base socket. This invention integrates the reciprocating structure friction wearing machine and rotating friction wearing machine into one structure through special designed base socket and upper-specimen control device and it needn't disassembly specimen and ensures the accuracy of the experience data.
Owner:INST OF MECHANICS - CHINESE ACAD OF SCI
Servo double-surface heating vacuum packaging machine
ActiveCN102201592AQuality is not affectedGuarantee exclusionFinal product manufactureSecondary cells manufactureControl systemEngineering
The invention discloses a servo double-surface heating vacuum packaging machine and belongs to liquid extraction seal secondary forming and packaging equipment of flexible packaged lithium batteries. The servo double-surface heating vacuum packaging machine comprises a double-station turntable feeding device driven by a cam partitioning device, a packaging mechanism with an up-and-down packaging device, and an electric control system, wherein the up-and-down packaging device comprises an upper cavity main body and a lower cavity main body; the opening directions of the upper cavity main body and the lower cavity main body are opposite to each other; the upper cavity main body and the lower cavity main body can clamp the turntable to form a sealed cavity body; a pressing board, an upper sealing head and a bayonet are arranged in the upper cavity main body; a lower sealing head and an aspirating hole are arranged in the lower cavity main body; the aspirating hole is communicated with an external vacuum source; the upper sealing head corresponds to the lower sealing head; and a heating body is arranged inside the servo double-surface heating vacuum packaging machine. The servo double-surface heating vacuum packaging machine has a compact structure and high efficiency; the electric core packaging quality is stable and the cost is low; vacuum liquid extraction can be realized; and pollution of the electrolyte to the equipment can be reduced to minimum.
Owner:DONGGUAN HONBRO LI BATTERY EQUIP TECH
Weed trimming apparatus, weed trimmer head, and trimmer line retention device
ActiveUS20090038163A1Easy to disassembleNo need to disassembleMowersMetal working apparatusEngineering
A weed trimmer apparatus having a head defining at least one side wall, the side wall forming one or more apertures therethrough, and one or more line retention members for retaining one or more trimmer lines. The line retention members are operatively connected to the head, wherein each line retention member is sized and configured to extend through a loop of at least one trimmer line during operation of the weed trimmer apparatus and wherein each line retention member is dynamically connected to the head to allow for installation and removal of the loop of trimmer line.
Owner:JEREZ ORLANDO +1
Method for estimating SOH of power lithium ion battery based on alternating current impedance test
ActiveCN103869256AAccurate estimateIntegrity guaranteedElectrical testingElectricityElectrical battery
The invention discloses a method for estimating the SOH of a power lithium ion battery based on an alternating current impedance test. The method comprises the following steps that the battery is charged at the constant current of 1 C to 0.5 C, the battery is discharged at the constant current of 1 C to 0.5 C, and the quantity of electricity discharged in the discharging process of each ring is recorded; the alternating current impedance test is conducted on the battery when the battery is discharged to the zero charge state and the charge transmission impedance of the battery is obtained from the NOV1.1 in a fitting mode through an alternating current curve of the medium frequency ranging from 0.25 Hz to 1.2 KHz; the discharging quantity of each ring, the charge transmission impedance and the number of rings serve as input parameters of an estimation function, and a capacity fading curve and a charge transmission impedance curve are obtained from the Origin 9 in a fitting mode; the capacity fading curve is corrected according to the charge transmission impedance curve, the estimation function of the battery SOH changing along with the number of the circulation rings is established, and judgment data for the SOH of a battery of the same type are calculated. According to the method, the SOH is estimated through the addition of the charge transmission impedance, an estimation result is more accurate, and the battery does not need to be detached.
Owner:SOUTH CHINA NORMAL UNIVERSITY
Unmanned aerial vehicle capable of improving fire extinguishing efficiency for high-rise fire fighting
ActiveCN107235147AExpand the range of water sprayNo need to disassembleAircraft componentsFire rescueUncrewed vehiclePropeller
The invention relates to an unmanned aerial vehicle capable of improving the fire extinguishing efficiency for high-rise fire fighting. The unmanned aerial vehicle comprises a vehicle body, a propeller, a bracket, a water gun and a camera, wherein an adjusting device and a fixing device are also arranged in the vehicle body; the adjusting device comprises a lifting mechanism and a steering mechanism; and the fixing device comprises two fixing mechanisms. According to the unmanned aerial vehicle capable of improving the fire extinguishing efficiency for high-rise fire fighting, the water gun is driven to move through the adjusting device, the spraying direction of the water gun can be continuously changed up and down or left and right, the spraying range of the water gun is expanded and the unmanned aerial vehicle is capable of continuously spraying water towards a plurality of directions while flying, so that the fire extinguishing efficiency is improved; and meanwhile, the water gun is fixed on the vehicle body through the fixing device, the fixing device is started and the water gun can be directly taken down when the water gun needs to be taken down from the vehicle body, and parts do not need to be dismantled, so that time and labor are saved.
Owner:成都泳铭科技有限公司
Locking structure capable of rotating lamp pole
InactiveCN102563302AImplement the rotation functionEasy to carryStands/trestlesEngineeringMechanical engineering
Owner:OCEANS KING LIGHTING SCI&TECH CO LTD +1
Lithium ion battery managing system and on-line measuring and diagnosing method for internal resistance of electric core monomer
InactiveCN107187328AAccurate replacementEfficient screeningElectrical testingElectric vehicle charging technologyWork patternElectrical battery
The invention discloses a lithium ion battery managing system and an on-line measuring and diagnosing method for internal resistance of an electric core monomer. The lithium ion battery managing system comprises a main control unit, an electric core sensing and monitoring unit and an electric current sensor, and adopts a manner of high-and-low voltage separation, wherein the electric core sensing and monitoring unit is used for monitoring and measuring the voltage of the electric core monomer of a lithium ion battery; the electric current sensor is used for measuring a bus electric current in a main return circuit of an electric circuit; and the main control unit is used for controlling the working pattern of a lithium ion battery set, and controlling the switching off and the switching on of a relay, the processing and the storing of data, the calculating, the processing and the transmitting of the internal resistance of the electric core monomer of the battery, and the diagnosing and the warning of the failure of an electric core. Through the adoption of the lithium ion battery managing system disclosed by the invention, on-line measuring of the internal resistance of the electric core monomer of the battery is realized, and the diagnosing of the failure and the aging of the electric core of the battery can be performed, so that the property and the condition of a lithium ion battery set can be more effectively monitored, effective basis is provided for the guarantee of the battery, reliable reference is provided for the exchanging of the electric core of the battery, important information is provided for the complete automobile strategy of an automobile, and the safety of the automobile, a driver and occupants are guaranteed.
Owner:NINGBO PREH JOYSON AUTOMOTIVE ELECTRONICS
Intelligent detection and automatic dedusting system for computer case
InactiveCN107783884AReasonable system designAuto clearHardware monitoringCleaning using gasesComputer basedComputer case
The invention discloses an intelligent detection and automatic dust removal system for a computer case. The system includes: a first detection unit for detecting the dust content in the computer case; a control unit for turning on the second The detection unit and the dust removal unit; the second detection unit is used to detect the dust distribution in the computer case; the dust removal unit is used to remove the dust in the computer case based on the dust distribution in the computer case; There are technical problems such as low dust removal efficiency, troublesome disassembly, and easy damage to equipment. The technical effect of reasonable system design, automatic dust removal without disassembly is realized.
Owner:王宁
Program loading leading method of electric control system of car
ActiveCN104809009AAchieve traceabilityReduce misuseProgram loading/initiatingApplication program softwareSoftware update
The invention discloses a program loading leading method of an electric control system of a car. The method is that the electric control system of the car is connected with a PC through a CAN bus; a storage space of the electric control unit of the car is divided into four parts, namely, a Bootloader storing area for storing Bootloader software, an application program storing area for storing application program software, a parameter storage area for storing related parameters of the electric control unit of the car, and a program version storing area for storing the software version information and software update record of the application program in the electric control unit of the car. With the adoption of the method, development and service people can know the use condition of the electric control unit of the car, so that the software of the electric control unit of the car can be traced; meanwhile, the mis-operation of the electric control unit of the car in field service can be reduced, and the leakage of a core code of a product can be prevented.
Owner:SHAANXI FAST GEAR CO
Method and device for measuring pore volume change of porous medium
InactiveCN101995373AResolve continuitySolve quicklyPermeability/surface area analysisVolume variationPorous medium
The invention discloses a method and a device for measuring the pore volume change of a porous medium. The method comprises the following steps of: A, putting a workpiece to be tested into a holder; B, closing an upstream control valve and a vent valve, and opening a communication valve, a downstream control valve and a pressure regulating control valve; C, after the device is positioned in the vacuum state and stable, closing the downstream control valve; D, performing confining pressure stepwise loading / unloading experiments; and E, opening the vent valve, setting a pressure regulating controller to be zero, and finishing the measurement of the pore volume change. The pressure regulating controller mainly comprises a front fixing sleeve, a rear fixing sleeve, a movable sleeve, a sliding head, a sliding block, a screw rod, a rotary head and a rotary rod, wherein the rear fixing sleeve is provided with a main scale; the movable sleeve is provided with a branch scale; and the main scale and the branch scale are used for reading the volume difference. The device is easy to operate, is convenient to read, is stable in performance and reliable in measurement, and is suitable for quick, continuous, accurate and intuitive measurement of wide-range pore volume change of porous media under the condition of complicated stress variation.
Owner:中国科学院武汉岩土力学所
Rotary Trimmer Apparatus And Related Rotary Head Assembly
ActiveUS20110289785A1Quick and easy trimmer line insertionSimple and efficient trimmer line removalMowersMetal working apparatusMechanical engineeringEngineering
An apparatus and method is provided for removing a retained member from a rotary head assembly configured for attachment to a rotary power source.
Owner:JEREZ ORLANDO
Lock bead type vibration isolation bumper without harmonic peaks in three directions
InactiveCN103161865AImprove high-frequency vibration isolation capability without resonance peakExtend your lifeShock absorbersFriction dampersEngineeringHigh frequency
The invention discloses a lock bead type vibration isolation bumper without harmonic peaks in three directions. The lock bead type vibration isolation bumper without the harmonic peaks in the three directions comprises an outer shell, a top cap, a spring nut, a vibration isolation spring and a ball locking-up mechanism. The lock bead type vibration isolation bumper without the harmonic peaks in the three directions adopts the ball locking-up mechanism, is matched with a locking force adjusting component, an equilibrium position adjusting component and a buffering component, and achieves the purpose of buffering in the three directions of a vibration isolator, vibration isolation without harmonic peaks in the three directions, adjustment of locking force, and meeting different nominal loads. Due to the fact that rolling friction is adopted to isolate vibration, the damping coefficient of the vibration isolator is reduced, and the abrasion in use is reduced. The vibration isolator of the lock bead type vibration isolation bumper without the harmonic peaks in the three directions is enabled to have the advantages of being long in service life, abrasion-resistant, and stable in performance, have high-efficient and high-frequent vibration isolation capability and the like.
Owner:CHONGQING UNIV
Weed trimming apparatus, weed trimmer head, and trimmer line retention device
A weed trimmer apparatus having a head defining at least one side wall, the side wall forming one or more apertures therethrough, and one or more line retention members for retaining one or more trimmer lines. The line retention members are operatively connected to the head, wherein each line retention member is sized and configured to extend through a loop of at least one trimmer line during operation of the weed trimmer apparatus and wherein each line retention member is dynamically connected to the head to allow for installation and removal of the loop of trimmer line.
Owner:JEREZ ORLANDO +1
Ramped Connector And Blade For Use With Rotary Head Assembly
ActiveUS20150201557A1Quick and easy insertionEfficient removalMowersMetal working apparatusStructural engineeringKnife blades
A rotary head assembly apparatus, and a cutting blade for use on trimmer rotary head assemblies are disclosed. The rotary head assembly apparatus is configured to easily replace cutting members necessary to cut unwanted plants. The cutting blade is for use on trimmer rotary head assemblies configured to cut unwanted vegetation.
Owner:JEREZ ORLANDO
Spring Biased Receptacle For Rotary Head Assembly
ActiveUS20150216122A1Quick and easy insertionEfficient removalMowersMetal working apparatusEngineeringMechanical engineering
Owner:JEREZ ORLANDO
Combined device for improving working precision of comma scraper
InactiveCN101602039AIncrease stiffnessQuality improvementLiquid surface applicatorsCoatingsAxial displacementEngineering
The invention relates to a combined device for improving working precision of a comma scraper similar to a fine macroaxis. Two ends of an axis head of the comma scraper are supported by a bracket respectively; two ends of the axis head of the comma scraper positioned in the opposite inner sides of the two brackets are respectively and fixedly provided with a supporting arm vertical to the scraper axis; two supporting arms are provided with an auxiliary axis which has axial displacement along the scraper axis and is locked in the supporting arm; and a different position of the auxiliary axis is locked in the supporting arm to generate axial load with different sizes and directions on the supporting arm. The combined device can accurately and rapidly adjust tightening torques of nuts at two ends of the auxiliary axis according to the weight and working load born by the scraper, generates preset axial load, adds the needed torque to the comma scraper to balance bending moment which is generated by the weight and the working load born by the comma scraper or the fine macroaxis, removes the bending deformation generated by the weight and the working load and ensures that the edge linearity of the high-precision scraper still keeps high service precision in a working state.
Owner:HEFEI UNIV OF TECH
GIS partial discharge charged detection test device based on defect simulation
InactiveCN105223478AImprove reliabilitySimple structure and principleTesting dielectric strengthTransformerCharge detection
The invention discloses a GIS partial discharge charged detection test device based on defect simulation, comprising a no-partial-discharge test transformer, a no-partial-discharge detection impedor, GIS defect simulation equipment, and a charged partial discharge detector. The no-partial-discharge test transformer is connected with defective components pre-arranged in the GIS defect simulation equipment through the no-partial-discharge detection impedor. A built-in broadband ultrahigh-frequency sensor is arranged inside the GIS defect simulation equipment, an external broadband ultrahigh-frequency sensor is arranged outside the GIS defect simulation equipment, and the built-in broadband ultrahigh-frequency sensor and the external broadband ultrahigh-frequency sensor are connected with the input end of the charged partial discharge detector. The device of the invention can be applicable to GIS partial discharge charged detection test under all kinds of defect simulation, can be used for simulating various defects truly and conducting charged detection test of local discharge signals for the defects, and has the advantages of simple structure principle, low cost and high reliability of test results.
Owner:STATE GRID CORP OF CHINA +2
Large-scale apparatus for synthesis of trichlorosilane and synthesis method thereof
ActiveCN1699162AProlong gas-solid contact timeAdequate responseHalogenated silanesSynthesis methodsSlag
The invention discloses a large-scale apparatus for synthesis of trichlorosilane in the form of tubular arrangement, the upper barrel diameter enlargement portion is a gas-solid separation section equipped with a discharge port, the intermediate section is a straight cartridge of reaction segment with an enveloping heating apparatus, the heating apparatus is provided with a silicon powder charging aperture on the upper portion, the bottom is connected with a lower sealing head, which is provided with a hydrogen chloride inlet port and a slag exit. A gas distributing plate is arranged above the hydrogen chloride inlet port on the bottom of the barrel reaction segment.
Owner:CHINA ENFI ENG CO LTD
Ice-making assembly of refrigerator
ActiveCN101896782AEasy to disassembleNo need to disassembleLighting and heating apparatusIce productionRefrigerated temperatureBiomedical engineering
Provided is an ice-making assembly of a refrigerator. A tray is removable from a frame to improve cleaning of the tray.
Owner:LG ELECTRONICS INC
Double-head separate resistance spot welding tongs
InactiveCN102962571AReduce the time to flip the gunEasy to installResistance electrode holdersBiochemical engineeringSpot welding
The invention discloses a pair of double-head separate resistance spot welding tongs. A first electrode arm (2) is mounted at the lower end of an electrode rod (1); a second electrode arm (3) is mounted at the lower end of another electrode rod (1); a round-head electrode (4) is fixed on the inner side of the lower end of the first electrode arm (2); two cylinder electrodes (5) are fixed side by side on the inner side of the lower end of the second electrode arm (3); distances from the round-head electrode (4) to the two cylinder electrodes (5) are equal; and a copper cushion block (6) is arranged among the round-head electrode (4) and the two cylinder electrode (5). The pair of welding tongs can be used for welding similar workpieces such as filler caps, is free from interference with the workpieces, can effectively prevent damaging the workpieces in the welding and clinching process, is simple to operate, and can weld two points simultaneously, the welding quality is guaranteed, the turning time of the pair of welding tongs is reduced, and the welding efficiency is improved greatly.
Owner:力帆科技(集团)股份有限公司
Multi-stage treatment and purification device for underground water pollution
InactiveCN110015783AImprove mixing efficiencyEasy to assemble and disassembleRotary stirring mixersTransportation and packagingActivated carbon filtrationWater quality
The invention relates to the technical field of water pollution treatment, and discloses a multi-stage treatment and purification device for underground water pollution. The multi-stage treatment andpurification device for underground water pollution comprises a water collection chamber, a first water pump, a stirring chamber, an aeration oxidation tank, a filter screen, a second water pump, a heavy metal reaction tank, an activated carbon filter and a water quality detector. The top of the stirring chamber is fixedly connected with a rotating motor, and the output end of the rotating motor is fixedly connected with a first gear; two symmetrically distributed first rolling bearings are embedded in the top of the stirring chamber; a stirring shaft is fixedly connected to the inside of eachfirst rolling bearing, and a second gear is fixedly connected to the outer wall of the top of each of the two stirring shafts; the two second gears are engaged with the first gear; a plurality of stirring blades which are distributed in a staggered manner are fixedly connected to the outer wall of each of the two stirring shafts; and fixing blocks are fixedly connected to the left side and the right side of the filter screen separately. According to the multi-stage treatment and purification device for underground water pollution, the mixing efficiency of sewage in the stirring chamber can beeffectively improved, and the filter screen can be conveniently disassembled and assembled.
Owner:陈建华
Split radio telephone hand set
InactiveCN101005654AImprove the inconvenienceEasy to carrySubstation equipmentRadio/inductive link selection arrangementsCredit cardData transmission
The invention comprises two entities separated each other - a personal information center and a mobile phone terminal. The personal information center comprises: a user identifying module; and a memory module for storing the information about bank card, credit card and other personal information and the information about multi mobile terminals. The mobile terminal reads information from the personal information center through a remote radio communication module used for the connection between the mobile phone system and mobile communication network. The mobile terminal has multi functions such as: calling, data transmission, receiving and transmitting short message, multimedia, entertainment and file saving and managing.
Owner:严晓敏
Apparatus for charging tyre pressure sensor battery by electromagnetic resonance
InactiveCN101420134ASimple structureCompact structureBatteries circuit arrangementsElectromagnetic wave systemElectrical batteryTransmitted power
The invention relates to a device for charging a battery of a tire pressure sensor by electromagnetic resonance. The device comprises a transmitter and an energy receiver, wherein, the transmitter is arranged under a vehicle body; and the energy receiver is arranged in a wheel frame. A transmitting coil comprises transmitting power supply and a transmitting coil, wherein, the transmitting power supply is connected with a vehicle body electricity supply circuit to provide working voltage for the transmitting coil; the energy receiver is connected with a battery charger of the tire pressure sensor of each tire; the transmitter vibrates in frequency of 10MHz after the transmitter is electrified to form a strong nonradiative magnetic field at the circumference; the magnetic field leads the energy receiver to generate electromagnetic resonance; the coil of the energy receiver generates current which flows to an input end of the battery charger to charge the battery. The device of the invention has simple, compact and reasonable structure, can omit detachment and maintenance by adopting charging management of wireless charge coil, can be used for a long time and has the advantages of energy conservation and environmental protection; the efficiency of energy transfer is high, which is 1 million times higher than the efficiency of energy transfer of common off-resonance magnetic induction; and the device is harmless to human body.
Owner:张健
Washing machine, system of washing machine, detection method for dirt on inner bucket wall of washing machine and image processing device
InactiveCN104775278ANo need to disassemblePerfect self-cleaning functionOther washing machinesControl devices for washing apparatusImaging processingData transmission
The invention provides a washing machine, which comprises a cabinet, an inner bucket, an outer bucket, an image acquisition device and a data transmission unit, wherein the image acquisition device is arranged between the inner bucket and the outer bucket, and is used for acquiring the image information of the outer wall of the inner bucket; the data transmission unit is used for transmitting the image information to an external image processing device so as to enable the external image processing device to generate and display a corresponding image of the outer wall of the inner bucket according to the image information. According to the washing machine provided by the invention, a user can conveniently know the dirt condition of the inner bucket wall at any time without disassembling and assembling the washing machine, and greater convenience is realized; the invention also provides the image processing device, a system of the washing machine and a detection method for the dirt on the inner bucket wall of the washing machine.
Owner:WUXI LITTLE SWAN CO LTD
Rotary trimmer apparatus and related rotary head assembly
ActiveUS9210838B2Quick and easy trimmer line insertionEasy to disassembleMowersMetal working apparatusEngineeringHead parts
An apparatus and method is provided for removing a retained member from a rotary head assembly configured for attachment to a rotary power source.
Owner:JEREZ ORLANDO
Pressure online detection auxiliary device and detection method thereof
The invention relates to a pressure online detection auxiliary device and a detection method thereof, which can solve the problems that pressure instruments and meters on large-scale equipment can not be detached and the detection can not be performed at present. The device comprises a pipeline detection cavity, wherein the outside of the pipeline detection cavity is of the shape of a hexagonal prism, the inside of the pipeline detection cavity is of a hollow cylindrical cavity, a control knob I and a control knob II are respectively mounted on the two bottom surfaces of the external hexagonal prism of the pipeline detection cavity, and a calibration port, a pressure gauge direction interface and a pipeline direction interface are respectively arranged on the three adjacent side surfaces of the external hexagonal prism of the pipeline detection cavity; and when detection is performed, the pressure output end of a pressure checker is connected with the calibration port, the control knobs I and II are adjusted to communicate the calibration port with the pressure gauge direction interface, the direction of the pipeline direction interface is cut off, and a hand pump of the pressure checker is utilized for pressurizing a checked pressure gauge so as to realize full-range verification of the pressure gauge. The device has the advantages of compact structure, convenience in use, simplicity in maintenance, capability of performing online verification without detaching the instrument and great popularization value.
Owner:SHENYANG AIRCRAFT CORP
Low temperature continuous denitrification process for coke oven smoke and reactor thereof
InactiveCN106334444ARestore activityMeet regeneration requirementsGas treatmentDispersed particle separationDecompositionInlet valve
The invention discloses a low temperature continuous denitrification process for coke oven smoke and reactor thereof. The reactor is divided into 2-9 individual regions, in between the regions are installed with heat insulation facilities, inside each of the regions are arranged with denitrification catalyst, a rectification grille, a soot blower, a pressure difference transmitter, an air inflow pipe for coke oven smoke, and more. When ammonium bisulfate, ammonium sulfate and other sticky substances generated by the reaction of SO2 and NH3 in the oven smoke, consolidate by large amount on the catalyst surface, causing the drop of catalyst activity in certain region of the reactor, the air intake valve is closed for smoke in the associated region, and hot air supply is plugged into the associated region, speeding up the decomposition by heat of ammonium bisulfate, ammonium sulfate and other substances, the denitrification catalyst is regenerated, with no effect on the running of denitrification devices in the remaining regions. The present invention is simple to operate, safe and reliable, with less area occupied, and low operating cost.
Owner:SOUTHWEST RES & DESIGN INST OF CHEM IND
Valve retainer abrasion loss measuring device and method
The invention relates to a valve retainer abrasion loss measuring device and method. A cylinder head assembly composed of a valve, a cylinder head and a valve retainer is erected on a cylinder head support, and a laser displacement sensor rightly aligns to the valve. The method includes: equalizing volume of the valve retainer abrasion loss to volume of a boss ring; calculating the height of a trapezoid by measuring recess displacement in the direction of a valve rod when the valve is completely closed before and after abrasion and calculating an included angle between the tangent direction of a contact zone of the valve retainer and the valve and the direction of the valve rod; obtaining an upper bottom and a lower bottom of the trapezoid by measuring contact ring width variations before and after abrasion of the valve retainer; taking the average value from the contact zone before and after abrasion of the valve retainer to the center of the valve retainer as the average radius of the boss ring; calculating the volume of the abraded part of the valve retainer according to the above measured data and calculating abrasion mass of the valve retainer according to material density of the valve retainer. The valve retainer abrasion loss measuring device and method are convenient to measure and with no need of demounting the valve retainer.
Owner:HANGZHOU DIANZI UNIV
LED display screen, LED module assembly and assembling and disassembling method for LED display screen
InactiveCN103208238ANo need to disassembleHigh precisionMachine supportsIdentification meansLED displayEngineering
The invention relates an LED display screen, an LED module assembly and an assembling and disassembling method for the LED display screen. The LED display screen comprises the LED modules, at least a fixing baseplate used for fixing the LED modules, and connecting devices used for fixing the bottom surfaces of the LED modules on the front surfaces of the fixing base plates. Connecting devices comprise first connecting portions connected to the LED modules and second connecting portions connected to the fixing base plates, the first connecting portions and the second connecting portions are structured to enable the LED modules to be combined on the fixing base plates from the front side of the LED display screen, and joint connections between the first connecting portions and the second connecting portions are detachable. In addition, the invention further provides the LED module and the assembling and disassembling method for the LED display screen. Due to the above structure and the assembling and disassembling method for the LED display screen, the LED display screen is quite convenient to disassemble and assemble.
Owner:宁波凯睿信息技术咨询有限公司
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