57results about How to "Meet life requirements" patented technology

In a turbine bucket having an airfoil portion and a root portion with a substantially planar platform at an interface between the airfoil portion and the root portion, a platform cooling arrangement including a cavity extending along the forward portion of the platform, and at least one inlet bore extending from a source of cooling medium to the cavity, and at least one outlet opening for expelling cooling medium from the cavity.

The invention provides a service life evaluation method for bus electrolytic capacitors of a motor driver. The method comprises the steps: testing the core temperature of each bus electrolytic capacitor of a driver and the working environment temperature by means of a temperature-sensitive technology, selecting the highest core temperature rise [Delta]T among the electrolytic capacitors, and calculating the core temperature T2 of the electrolytic capacitors when the driver is running in a condition with the upper limit environment temperature. The service life of the bus electrolytic capacitors is calculated according to the difference between the highest allowed core temperature and the T2 as well as correction coefficients of bus voltages, so the service life of the driver can be evaluated. According to the method, the influence brought by the difference between an actual temperature upper limit for a driver and a test environment temperature, the influence of bus voltage when the driver is in use and the influence of uneven temperature rises among bus electrolytic capacitors are all taken into consideration. Aspects are comprehensively considered by the method, and an evaluation result is reliable.

An analog device with parallelly connected redundant inputs is composed of a frame consisting of three panels perpendicular to each other, an analog platform, at least three interface modules connected perpendicularly to said three panels, and the drivers relatively connected to said interface modules. The said interface module is a mechanical one consisting of guide track, slide table, connecting rod and driver. Its advantages are simple structure, easy control and long service life.

The invention discloses an electric steering engine capable of resisting large bending torque. The electric steering engine capable of resisting the large bending torque comprises a harmonic speed reducer, an output shaft and a connection assembly, wherein the output shaft is fixedly connected with an output steel wheel of the harmonic speed reducer, and the connection assembly is arranged between the output shaft and a load, used for transmitting torque and fixedly connected onto an elastic body. According to the electric steering engine, the connection assembly additionally arranged between the output shaft and the load is used for transmitting the torque and fixedly connected onto the elastic body, so that the connection assembly bears the bending torque from the output shaft. By utilizing the elastic body to unload the bending torque, separation of a carrying object of the bending torque of the electric steering engine is achieved, and the output shaft is only responsible for transmitting the torque. Therefore, the electric steering engine has the advantages of being resistant to the large bending torque, high in reliability and strong in bearing capability, avoids radial displacement of the output shaft under the effect of the being torque, and meets the requirement for long service life of middle-long distance high-altitude air vehicles. The invention further discloses an air vehicle applying the electric steering engine capable of resisting the large bending torque. The air vehicle is high in reliability, long in service life and especially suitable for middle-long distance flight.

The invention discloses a polymerized gold-silicon insulator material with the tracking and erosion resistant grade being 1A4.5 or higher, and a preparation method and application thereof. The polymerized gold-silicon insulator material is prepared from raw materials including polyethylene, polypropylene, methyl silicone rubber and aluminum hydroxide powder. The preparation method comprises the following steps of preheating a banburying machine to 150 to 160 DEG C; adding the polypropylene and the methyl silicone rubber; then, descending an upper top bolt; performing banburying for 115 to 120s at 0.5 to 0.6 MPa and 150 to 160 DEG C; adding the polyethylene, and performing the banburying for 115 to 120s at 0.5 to 0.6 MPa and 150 to 160 DEG C; regulating the roller distance to be 3.8mm; switching on a power supply switch so that a mixing mill operates; opening a circulation water valve; then, feeding rubber materials discharged out from the banburying machine onto a mixing mill for roll covering; after the temperature of the rubber material is lowered to a value below 110 DEG C, adding the aluminum hydroxide powder; respectively performing left and right cutter cutting twice at each of the left side and the right side; after the aluminum hydroxide powder is uniformly mixed, performing material cutting, cooling and granulation; and obtaining the material. The material can be used for manufacturing an insulator; the requirements on the insulator electric characteristics and mechanical properties of the insulator and the requirements on the service life can be met; the tracking and erosion resistant grade is 1A6 grade; and the maximum erosion depth is smaller than 2mm.

The invention relates to a parallel-type six-dimensional-output twenty-eight-input redundant fault-tolerant driving simulator which comprises a working platform, three panels, four four-input single-output redundant driving mechanisms and two six-input single-output redundant driving mechanisms. The three panels are mutually perpendicular pairwise, one end of each four-input single-output redundant driving mechanism is fixed on a panel, the other end of each four-input single-output redundant driving mechanism is fixed on the working platform, one end of either six-input single-output redundant driving mechanism is fixed on the panel, and the other end of either six-input single-output redundant driving mechanism is fixed on the working platform. The invention has simple structure and easy control, can obtain greater power by utilizing parallel input, and each interface has the redundance of 4-6 redundant motors so that each motor has lowered power requirements and can differentially output to reach great power and multiple redundant interfaces. Because of adopting the modularized design, the extendibility is strong.

The present invention relates to a sensor control method and a control device thereof. The sensor control method comprises the following steps that: 1, a household appliance controller starts a sensor to carry out preheating, wherein the preheating time is T1; 2, the household appliance controller samples n times by the sensor, and acquires corresponding current state values, wherein the using time is T2; 3, the household appliance controller closes the sensor, wherein the closing time is T3. The sensor control device comprises the household appliance controller, the sensor and a sensor control part, wherein the sensor control part is connected between the household appliance controller and the sensor, and is provided for controlling the sensor closing. According to the present invention, the control part is adopted to control the sensor, the control part controls the sensor to always close when the household appliance is at the shutdown / standby state, and the control part controls the sensor to imtermittently work when the household appliance is at the turn-on state, such that the service life of the sensor on the household appliance can be prolonged under the condition of the fixed service life of the sensor so as to achieve the service life requirement of the whole household appliance.

The invention belongs to the field of solar heat absorbing coatings, and in particular relates to an electroplating production process for continuously plating black chrome coatings on aluminum strips. A production process for continuous electroplating of high-performance black chrome coatings on metal strips, that is, using metal plates and strips as substrates, and continuously plating black chrome coatings on them, characterized in that: the production The process includes the following process procedures, which are followed by substrate pretreatment, quaternary alloy zinc precipitation, copper plating, nickel plating, and chrome plating. The invention can provide a new black chromium continuous electroplating process, which is not only suitable for use in automatic continuous electroplating production lines, but also has excellent selective absorption performance and heat corrosion resistance of the plated black chromium coating.

The invention relates to a preparation method of a modified polymer insulator material. The preparation method of the modified polymer insulator material comprises the following steps of: pre-heating an internal mixer to 150 DEG C to 160 DEG C; dropping an upper top bolt after adding polypropylene, banburying for 115 seconds to 125 seconds under the pressure of 0.5MPa-0.6MPa and temperature of 150 DEG C to 170 DEG C; then adding polythene and banburying for 115 seconds to 125 seconds under the pressure of 0.5MPa-0.6MPa and temperature of 150 DEG C to 170 DEG C; raising the upper top bolt, banburying for 115 seconds to 125 seconds under the temperature of 150 DEG C to 170 DEG C; and finally discharging, cooling and pelletizing, wherein the molecular weight of each of polypropylene and polyethylene is 10 thousand to 20 thousand. The modified polymer insulator material prepared by the preparation method not only can satisfy the electrical characteristics and mechanical performance requirements of the insulator, but also can satisfy the service life requirement. Besides, the preparation method has an antifouling self-cleaning function and has the advantages of high cost performance, energy conservation and environment protection and no pollution, so that the product can be recycled after reaching the service life.

The invention provides an electromagnetic shielding method of satellite cables. The method includes the steps that first, electromagnetic wave shielding fabric and a bonding material are tested; numbers of the cables in which shielding processing is needed and a number of an electric coupler are recorded; the electromagnetic wave shielding fabric is tailored according to different cables, and the bonding material is bonded on the edge of the electromagnetic wave shielding fabric; the electromagnetic wave shielding fabric is bonded on a bunch of cables, so that a cable segment shielding layer is formed; the electromagnetic wave shielding fabric and Teflon thin films are manufactured into an electric coupler template according to the size of the electric coupler; the electric coupler template is wound outside the electric coupler to form an electric coupler shielding outer layer; the electromagnetic wave shielding fabric coating the electric coupler is erected on the outer layer of the bunch of cables; the Teflon thin films are wound outside the electric coupler coated with the electromagnetic wave shielding fabric and outside the bunch of cables, and the cable assembly after being coated is tested. The electromagnetic shielding method of the satellite cables has the advantages of effectively lowering the weight of satellite borne cables, and improving the EMI performance and reliability of the satellite cables.

The invention belongs to the field of aero-engine fuel oil systems, and relates to a piston device with a speed response mechanism. The piston device comprises a shell and a piston mounted in the shell, the shell is provided with a work oil path inlet and a work oil path outlet, the piston is provided with an annular work oil path channel, the piston comprises a piston head and a flow adjusting type piston base fixedly connected with the piston head, an adjusting oil path inlet and an adjusting oil path outlet are formed in the shell, the adjusting oil path inlet communicates with the adjusting oil path outlet through the flow adjusting type piston base, when the adjusting oil path outlet is closed, the piston head can move in the shell in the axial direction of the shell, the work oil path inlet communicates with the work oil path outlet through an annular work oil path channel, when the adjusting oil path outlet is opened, the piston head moves in the shell in the axial direction ofthe shell, and the work oil path inlet and the work oil path outlet are disconnected. The oil supply rate of a product during the ignition period can be ensured, and after ignition, normal work is achieved.

The invention provides a drive axle for a suspension type monorail vehicle bogie. The drive axle comprises a motor, a coupler, a main speed reducer, a differential mechanism, a wheel transmission device, a drive axle shell and an accessory; the motor is connected with the coupler, the coupler is connected with the main speed reducer, the main speed reducer is connected with the differential mechanism, and the differential mechanism is connected with the wheel transmission device; power input by the motor is transmitted to the main speed reducer through the coupler to be coupled to amplify the torque, and then is output to the wheel transmission device after the differential mechanism balances the rotating speed torque; a wheel hub drives a vehicle. The drive axle for the suspension type monorail vehicle bogie provides large power, large torque and high rotating speed, is resistant to strong impact and extreme environments, low in weight and high in reliability, and has the service life of 30 years.

The invention discloses a backlight control method of an instrument. The method includes a first step of conducting a power-on self-test and storing health state data, produced through the self-test result, of each LED lamp, a second step of selecting the LED lamps for use according to the self-test result in the first step, and a third step of conducting working process monitoring, conducting real-time monitoring on the LED lamps in a working state, and storing the monitoring data. The invention provides the control method with the long service life for instrument backlight design, the service life of an LED is made to meet the requirement for product service life, the reliability of backlight is also guaranteed, and the poor performance that the LED lamps flicker in a backlight situation can be effectively avoided.

The invention discloses a simplified multi-mode vehicle detector which comprises a microprocessor, a geomagnetic sensor chip, an operational amplifier, a radar ranging module, a power supply unit, a microwave radio frequency communicator, a matched transceiving antenna of the microwave radio frequency communicator and a visible light auxiliary detection circuit. An output signal of the geomagneticsensor chip is amplified by the operational amplifier and then is input to a geomagnetic signal input end of the microprocessor; the microprocessor is connected with the radar ranging module througha ranging interface end, is connected with the microwave radio frequency communicator through a communication end, is connected with the power supply unit through a control output end to ensure power-saving work of related parts, and is connected with the visible light auxiliary detection circuit through a light detection interface end. According to the invention, a unique grading progressive strategy is adopted to detect vehicles; in most cases, calculation is carried out by geomagnetic and / or visible light data acquired by ultra-low power consumption; the detection result with high confidence can be output without additionally starting a radar ranging module with high power consumption, the detection accuracy is considered, the product battery replacement and scrapping speed is greatly reduced, the product is flexible, economical and practical, a large amount of manpower and material resource operation and maintenance investment can be saved, and the method is suitable for various intelligent traffic applications.

The invention discloses a superior-performance blast furnace connector material. The superior-performance blast furnace connector material is prepared by combining, by weight, 20-50 parts of brown corundum powder, 10-15 parts of silicon carbide, 5-10 parts of reactive alumina fine powder, 1-4 parts of silica powder, 1-3 parts of graphite, 2-5 parts of nanometer carbon powder, 15-30 parts of kaolin, 1-5 parts of calcium aluminate cement, 1-3 parts of a water reducer and 1-3 parts of an antioxidant with extra added 5-8 parts of a no-water and high-temperature binding agent. By the arrangement that brown corundum is added to the connector material in ingredient, the brown corundum has the advantages of good crystallization, strong liquidity, low linear expansion coefficient, corrosion resistance and no crack, and good physical and chemical properties and corrosion resistance and safety performance of the connector material are achieved; the kaolin added to the connector material has good plasticity and fire resistance, so that plasticity of the connector material is enhanced.

The invention discloses a one-dimensional silver cluster coordination polymer. The molecular formula of the one-dimensional silver cluster coordination polymer is [Ag(CS<0.5>N<0.25>H<1.25>)<4>]<n>, wherein n is a positive integer, and CS<0.5>N<0.25>H<1.25> is a 4-pyridine protonated thiol ligand. The invention also discloses a preparation method of the one-dimensional silver cluster coordination polymer. The one-dimensional silver cluster coordination polymer is prepared through in-situ synthesis of a soluble silver salt and 4,4'-dithiopyridine ligand under microwave reaction conditions, has the advantages of usage of easily-available raw materials, simple and feasible reaction operation, no need for inert gas shielding, high reaction yield, capability of realizing batch production and thelike, and is expected to be applied to luminescent materials in luminescent devices.

The invention discloses a preparation method of a magnesium oxide secondary emitter. The method is characterized in that metal nickel, silver and a silver-magnesium alloy are used as target materials and are alternately sputtered on the surface of an emitter to obtain a composite transition layer, the matrix emitting electrode of the composite transition layer and an evaporation source made of a volatilizable organic magnesium salt and alumina powder are put into vacuum equipment respectively, after vacuumizing, the evaporation source is heated to 200-300 DEG C, the matrix emitting electrode is heated to 600-900 DEG C, then oxygen and nitrogen are filled to sensitize the composite layer on the surface of the emitting electrode in an oxygen atmosphere, and the magnesium salt is decomposed on the surface of the emitting electrode and reacts with the oxygen to generate magnesium oxide which is directly attached to the surface of the matrix, so that the magnesium oxide secondary emitter is prepared. According to the manufacturing method of the secondary emitter of the electron multiplier for the cesium-beam tube, the manufactured magnesium oxide film is more compact and firmer, and the electron multiplier assembled with the secondary emitter can meet the requirement for long-time continuous use of the cesium-beam tube and the requirement for the service life of the cesium-beam tube.

The invention discloses a high-reflection high-barrier solar cell backboard film which comprises a middle PET base film, a first coating and a second coating, wherein the first coating and the second coating are arranged on the upper surface and the lower surface of the PET base film respectively, the first coating comprises fluorine resin doped with Ag-MOFs material coated titanium dioxide, and the doping amount of the Ag-MOFs material coated titanium dioxide accounts for 30-40wt% of the mass of the first coating layer. The high-reflection and high-barrier solar cell backboard film is good in overall performance consistency and not prone to local defects, the film layer of the high-reflection and high-barrier solar cell backboard film not only has high reflectivity and high water vapor barrier performance, but also has excellent performance of high temperature, weather resistance, wear resistance, impact resistance and the like, and the service life requirement for long-term use in severe environments is met.

The invention discloses a protection method and device for a drilling tool mark. According to the protection method and device for the drilling tool mark, a marking groove is machined on the outer circle of a high-strength section of a drilling tool in the axis direction through a common standard rod milling cutter, and the drilling tool mark is printed on the groove bottom; the drilling tool mark is covered with a sealing piece corresponding to the marking groove in shape, and a leaf spring with teeth at the two ends is clamped into the marking groove so as to prevent the sealing piece from falling off. By means of the protection method and device for the drilling tool mark, drilling tool information can be conveniently printed, and the original information of the position of the mark can be preserved for a long time. The requirement for the service life of all drilling tools and tools composing a drilling stem system can be met. The sealing piece can perform the action of preventing abrasion and slurry corrosion, and thus the original information in the marking groove is better protected. The accuracy of use records is ensured. Safe use of the drilling stem system is ensured to the maximum, the occurrence rate of drilling failures is reduced, and additional drilling cost caused by handling drilling failures is reduced. The device can be reused.

The invention relates to a split contact support and a contactor. A supporting assembly is formed by a contact supporting part and a supporting connection plate which are independently arranged. The contact supporting part and the supporting connection plate can be implemented in different materials, i.e. the material cost can be controlled and the service life requirement can be met. The contactsupporting part and the supporting connection plate are connected and fixed by a structure with the self-locking effect, the structure is simple and the installation process is simple and quick. An elastic supporting mechanism is implemented as a supporting elastic arm of an integral structure and the same material as the supporting connection plate so as to provide greater supporting strength. The supporting elastic arm and the supporting connection plate have an integral structure so as to avoid displacement, relative vibration and friction and reduce the actuation noise of the contactor. The armature and the supporting connection plate are positioned by clamping and embedded and cooperated thorough a positioning groove and the supporting elastic arm so as to realize the front-rear and left-right position limiting on the installation plane and have higher strength, and thus the support is more suitable for the contactor with high current and high service life requirement.

The invention provides an irradiation-resistant low-harmonic LED drive circuit. The irradiation-resistant low-harmonic LED drive circuit comprises a rectification unit and a drive unit. The input end of the rectifying unit is connected with an external power supply, and the output end is connected with the driving unit and used for rectifying and filtering the external power supply to obtain a direct-current power supply and outputting the direct-current power supply to the driving unit. The driving unit is used for converting the voltage of the direct-current power supply into the working voltage of the LED light source, the driving unit comprises a first chip SM2315, a first capacitor and a second resistor, a first pin of the first chip SM2315 is connected with the output end of the rectifying unit, a second pin and a ninth pin of the first chip SM2315 are grounded, a third pin of the first chip SM2315 is grounded after being connected with the first capacitor, and a fourth pin of the first chip SM2315 is grounded after being connected with the second capacitor. The fourth pin is connected with a second resistor and then is grounded, and the eighth pin, the seventh pin, the sixth pin and the fifth pin are used for being connected with an LED light source. Correspondingly, the invention further provides an LED lamp. The LED drive circuit can effectively tolerate the radiation dose in the lamp life, and meets the requirements of life and power distribution.

The invention relates to the technical field of expressway construction works, in particular to a pile filling technology of large-diameter bagged concrete in a corrosive environment. The invention aims to solve the problems that a concrete construction with a large-size structure has poor corrosion preventing effect and small bearing force in a salinized soil environment by the prior art. The pile filling technology of the large-diameter bagged concrete comprises the following steps of: forming a hole by using a conventional dilling technology; using a steel tube as a slurry discharge pipe in advance after cleaning the hole; counterweighing and then sinking a corrosion preventing bag into brine slurry; injecting fresh water slurry or fresh water after determining the same depth of the corrosion preventing bag and the drilling hole; discharging the brine slurry in the drilling hole through the slurry discharge pipe by using a water-discharge and slurry-injecting method; and casting underwater concrete of a foundation pile until forming the pile by adopting a conventional drilling and pile filling process. The invention has the advantages of favorable adaptability, easy popularization and lower cost; the water-discharge and slurry-injecting method has strong operability; and the predictability of the service life of concrete foundation pile can be defined.

The invention discloses a multi-layer composite solar cell backplane film. The backplane film comprises an intermediate PET base film and a first coating layer and a second coating layer respectively arranged on the upper surface and the lower surface of the PET base film. The second coating is composed of the following raw materials in parts by weight: 40-80 parts of polytetrafluoroethylene resin, 25-45 parts of modified epoxy resin, 5-15 parts of fluorosilicon modified acrylic resin, 1-5 parts of Nano-titanium dioxide and 3 to 8 parts of polyethylene glycol. The multi-layer composite solar cell back sheet film of the present invention not only has excellent properties of weather resistance, aging resistance and damp heat resistance, but also has excellent antibacterial and flame retardant properties, and can meet the long-term service life requirements in harsh environments.

The invention provides a rolling bearing reliability design method based on a stress-strength interference model, which considers the dynamic behavior of a rolling bearing, processes the load into a random process, converts the reliability index into the allowable range of the equivalent dynamic load of the rolling bearing based on the stress-strength interference model, and improves the reliability of the rolling bearing. And according to the reasonable value of the allowable range of the equivalent dynamic load, bearing parameters are optimized in combination with a bearing design formula, so that the requirements of the target service life and the reliability are met under the working condition. Dynamic reliability emphasizes that the operation evolution of a mechanical product is a dynamic behavior, damage can influence the dynamic characteristics of the mechanical product, and the dynamic behavior inevitably influences the reliability or failure rate of the mechanical product. The dynamic characteristics of the rolling bearing are considered, so that the dynamic reliability design of the rolling bearing is more accurate, and optimization is more effective.

The invention discloses an electric steering engine capable of resisting large bending torque. The electric steering engine capable of resisting the large bending torque comprises a harmonic speed reducer, an output shaft and a connection assembly, wherein the output shaft is fixedly connected with an output steel wheel of the harmonic speed reducer, and the connection assembly is arranged between the output shaft and a load, used for transmitting torque and fixedly connected onto an elastic body. According to the electric steering engine, the connection assembly additionally arranged between the output shaft and the load is used for transmitting the torque and fixedly connected onto the elastic body, so that the connection assembly bears the bending torque from the output shaft. By utilizing the elastic body to unload the bending torque, separation of a carrying object of the bending torque of the electric steering engine is achieved, and the output shaft is only responsible for transmitting the torque. Therefore, the electric steering engine has the advantages of being resistant to the large bending torque, high in reliability and strong in bearing capability, avoids radial displacement of the output shaft under the effect of the being torque, and meets the requirement for long service life of middle-long distance high-altitude air vehicles. The invention further discloses an air vehicle applying the electric steering engine capable of resisting the large bending torque. The air vehicle is high in reliability, long in service life and especially suitable for middle-long distance flight.

The roller bearing comprises an outer ring, two inner rings, tapered rollers and a metal sealing check ring, an annular convex cone is designed on the inner side of the outer ring, the two inner rings are the left inner ring and the right inner ring respectively, annular roller paths inclining inwards are designed on the outer sides of the left inner ring and the right inner ring respectively, and the outer side of the outer ring is provided with an annular convex cone; tapered rollers are filled between the outer ring and the left inner ring as well as between the outer ring and the right inner ring; metal sealing check rings are mounted on two sides between the outer ring and the left inner ring as well as between the outer ring and the right inner ring; and the outer ring and the metal sealing check ring are fixedly mounted together through a check ring for a hole. The invention has the advantages that the design is ingenious, the structure is compact, the two groups of relatively inclined full complement tapered rollers do not use a retainer, and the assembly quantity is maximized, so that the maximum load bearing capacity is realized; the position of the inner ring can be kept through the hole check ring and the metal sealing check ring, and it is guaranteed that the double-row full-complement tapered roller bearing cannot be separated before installation; and meanwhile, good sealing of the roller bearing is realized.

The invention relates to a movable suction box, and belongs to the technical field of dust collection equipment. The movable suction box comprises a box body (1), wherein the front end of the box body (1) is sealed, and a connection opening (7) is formed in the rear end of the box body (1); a linear guide rail (2) is arranged in the box body (1) along the horizontal direction; a sliding air pipe (3) is arranged on the linear guide rail (2); the front end of the sliding air pipe extends out of the box body (1) and is provided with an annular suction nozzle (4); a cylinder (5) is arranged between the box body (1) and the sliding air pipe (3) or the annular suction nozzle (4) in a connection manner; under the action of the cylinder (5), the sliding air pipe (3) can do reciprocating motion on the linear guide rail (2). The movable suction box disclosed by the invention is simple in structure and can meet the requirements on pipeline sealing during quick moving of the suction nozzle and the service life.