217results about How to "Achieve pressure" patented technology

The optical fiber grating sensor detecting pressure and temperature simultaneously consists of mainly free elastic cylindrical pressure transducer, cantilever beam mechanism, fiber grating, sealed part, end element and pre-tensed spring; protective casing and transmission fiber. The technological scheme is that two fiber gratings are fixed to the upper and the lower surface of the cantilever beamin the corresponding positions and connected to transmission fiber via one fiber coupler; that the triangular cantilever beam mechanism converts the radial information of the cylinder under the outer pressure into deflection of the cantilever beam and thus the variation of the Bragg reflection wavelength with temperature and pressure, and that differential measurement technology is used to solvethe cross sensitivity of fiber grating.

The invention provides a triangular convex-stab-shaped plate-fine heat exchanger used for condensation of a non-azeotropic multi-component mixture. The plate-fin heat exchanger comprises parallel plates; fins are arranged between the plates; the fins comprise inclined parts inclining towards the plates; convex stabs are machined on the inclined parts in a stamping mode, so that fluid on the two sides of the inclined part circulates through holes formed in the inclined parts in a stamping mode, and the convex stabs extend outwards in the flowing direction of the mixture from the inclined parts. The novel triangular convex-stab-shaped plate-fine heat exchanger is suitable for being used in condensation of the non-azeotropic multi-component mixture, so that condensation of the non-azeotropic multi-component mixed medium is achieved, the heat exchange efficiency is improved, and the fluid flowing resistance is reduced.

A simulation SNMP network element includes the configuration parameter module, the agent module, the sequence traps generation module and the random traps generation module; using the network element to process network management system test method: when the simulation network element startup, according to the configuration file, initializing; setting simulation agents number, the listening port number when each agent startup, and parameters and rules to simulated send alarm; at the different port number, activating multiple SNMP monitor threads; when SNMP monitoring thread receives SNMP request information, it returns the command execution result to the background network manager; using sequence order to submit Trap message to the background network manager, to debug the background network management alarm function; using random sending mode to submit the Trap message to the background network manager, to simulate the real warning handling process of the foreground network element. The invention can use simulation large-scale network elements in the laboratory to achieve the pressure and performance testing of the background network manager, and also reduce the time waiting for co-debug of the background network management.

The invention discloses an apparatus for testing network performance parameter, a system thereof, and a method thereof. The method comprises the following steps: acquiring information of all user terminals with different interface forms, wherein, the user terminals are connected with a unified interface platform; supporting a flexible telephone traffic model set function, and forming an AT instruction packaged with a test service parameter; outputting the AT instruction to the user terminals which are connected with the unified interface platform, and controlling the user terminals to carry out a test according to a set telephone traffic model; according to the received AT instruction, carrying out a network performance parameter test by the terminals, and feeding back test data information; receiving the test data information returned by the user terminals by an automatic calling server, carrying out processing to obtain a network performance test parameter, and automatically generating a KPI statistics form and a test report. By applying the apparatus, the system and the method of the invention, high capacity pressure and performance tests of a communication network can be realized, and reliability of test data and test efficiency are raised.

The invention discloses an electro-hydraulic control system of a high/low temperature test stand of an automobile automation transmission valve body. The system comprises: an electric control system and a high/low-temperature hydraulic system. The electric control system comprises: an upper computer, a lower computer, an input/output module and a transmission control unit (TCU) controller. The input/output module and the TCU controller are connected with the lower computer as a dual redundant control mode. The valve body to be detected is directly controlled by a dual redundant control system. The high/low-temperature hydraulic system comprises an independently controlled high-temperature hydraulic circuit and a low-temperature hydraulic circuit, a high/low-temperature shared circuit which is connected with the high-temperature hydraulic circuit and the low-temperature hydraulic circuit and a detected hydraulic system which is connected with the high/low-temperature shared circuit. The detected valve body is arranged in the detected hydraulic system. In the invention, hierarchical control formed by the upper computer, a lower real-time controller and real-time interface control are adopted; through a CAN communication and signal interface module and a dual redundant valve plate control scheme which is connected with the TCU, a requirement of high speed data acquisition and test in the valve body test under the condition of the high/low temperature and operation parameter simulation can be satisfied.

The invention relates to the electric receiving device of the electric vehicle. The current receiver for current in and return comprises the electric boots and the spring device, with two parallel parallelogram four linking bar structure and a separation structure, each four link structure made by the top and down lining bars hinged to the corresponding side plate and isolation plate, the separation structure composed of the air cylinder, air cylinder linking pole hinged to the cylinder piston end, lower linking brake bar with two rocker arms with the lower linking brake bar hinged to the lower linking bar pin shaft fixed to two side walls, one of the rocker arm hinged to the air cylinder linking bar, the other being the stop leaning against the low linking bar, each isolation plate bottom installed with an electric receiving boot, each four link bar structure having its top link bar connected to the said spring device. It solves the technical issues of current receiver contact or separation with the electric supply track smoothly, and the grounding issue of it.

The invention discloses a simulated interface adapter of an aircraft engine control system. The simulated interface adapter comprises an interface configuration management and signal monitoring module, a signal switching module, a signal wiring module, a fault injection module, a signal conditioning module and an interface control module. The interface configuration management and signal monitoring module is connected with the signal switching module, the signal wiring module, the fault injection module, the signal conditioning module and the interface control module. The signal switching module, the signal wiring module, the fault injection module, the signal conditioning module and the interface control module are sequentially connected. The signal switching module is connected with a controller of the aircraft engine control system. The interface control module is connected with an external real-time hardware platform. The open and modularized overall simulated structure is adopted for separating all the modules from one another, the real-time simulated platform of various interfaces is supported, and expansibility and maintainability are remarkably improved.

The invention discloses an exhaust gear applied to an automotive hydraulic braking system and a control method, and aims to overcome the problems that the structure is complex, the cost is high, and pipeline detection and the exhaust of a secondary loop in a hydraulic braking system of a vehicle with an ABS (anti-lock braking system) and an ESP (electronic stability program) during the exhaust process of the braking system cannot be completed in the prior art. The exhaust gear applied to the automotive hydraulic braking system comprises a braking control mechanism, a hydraulic regulating unit, exhaust filling equipment, a braking actuator and an exhaust control unit ECU, wherein the exhaust filling equipment comprises a four-position two-way electromagnetic valve, a filling gun, a vacuum pump, a pressure-limiting valve, an oil pump, an air pressure tank and an air compressor; the p port of the filling gun is in tube connection with the a port of the four-position two-way electromagnetic valve; the p port of the four-position two-way electromagnetic valve is in tube connection with the a port of the vacuum pump, the p port of the oil pump and the p port of the air pressure tank; the p port of the pressure-limiting valve is in tube connection with the p port of the oil pump; the a port of the air pressure tank is in tube connection with the p port of the air compressor. The invention also provides the control method adopting the exhaust gear applied to the automotive hydraulic braking system.

The invention discloses a narrow-band distributed feedback laser wavelength scanning fiber bragg grating sensing device, which senses and detects external physical quantities in the following way that: the device comprises a current-driven distributed feedback laser controlled by a temperature control circuit; light emitted from the laser enters a sensing fiber bragg grating through an optical isolation unit; the light passing through the fiber bragg grating enters an opto-electric receiving unit and then enters a control analysis unit in a form of electrical signal; the output wavelength of the distributed feedback laser can be regulated by changing a control temperature; and a grating reflection centre wavelength and a corresponding external physical quantity are reckoned according to an extremum output by the opto-electric receiving unit when the output wavelength of the laser is matched with the fiber bragg grating reflection centre wavelength by temperature scanning. Compared with a conventional structure where sensing is realized by performing wavelength demodulation at the output end of the fiber bragg grating with a broadband light source, the narrow-band distributed feedback laser wavelength scanning fiber bragg grating sensing device has the characteristics of great production cost reduction, and miniature and low-cost engineering.

The invention belongs to a resin based composite material liquid forming technique, and relates to a composite material liquid pressure forming method. The periphery of a predetermined mold body is filled with resin, and the predetermined mold body is continuously pressurized and cured successively by resin via a first pressure source and a second pressure source. According to the invention, the predetermined mold body is pressurized and cured continuously by resin; a molded composite material product not only has high fiber volume content equivalent to a composite material molded by a prepreg/autoclave technique, but also has the high precision equal to the composite material molded by an RTM technique; the applicable range of the composite material molded by a liquid forming technique is expanded; the molding efficiency is improved obviously; the manufacturing cost is reduced.

The invention discloses a recovery device for leaked gas in the maintaining operation process of gas pipe network, comprising a pressure device provided with a gas inlet and a gas outlet, a gas inlet pipeline, a gas outlet pipeline, a maintaining side pipeline, an operation side pipeline, an inert gas bomb and an air inlet; wherein the maintaining side pipeline and gas inlet pipeline are connected by a control valve (81); the operation side pipeline and gas outlet pipeline are connected by a control valve (82); the other sides of the maintaining side pipeline and operation side pipeline are respectively connected with a hose tube; the maintaining side pipeline and gas outlet pipeline are connected by a control valve (83); the operation side pipeline and gas inlet pipeline are connected by a control valve (84); the inert gas bomb is connected with the maintaining side pipeline by a control valve; and the air inlet is connected with the gas inlet pipeline by a control valve. The recovery device recycles and uses the gas wasted in traditional operation manner, polluting atmospheric environment and having potential safety hazard, substantially implements zero emission and avoids safety accident.

The invention discloses a whole-machine data analysis and testing device for a rotary drilling rig. The whole-machine data analysis and testing device comprises a driving shaft (8), a power box (7), a dynamometer (11), a pile casing (2), a floor (1), an anchor rod (15) and a hydraulic damping system, wherein the pile casing and the anchor rod are pre-buried in a foundation, the power box is mounted at the top of the pile casing, an output transmission shaft of the power box is coaxially connected with the dynamometer, and torque, rotational speed and power sensor signal circuits of the dynamometer, as well as pressure and lifting force sensor signal circuits of the hydraulic damping system are connected into a computer control system. According to the whole-machine data analysis and testing device disclosed by the invention, on the one hand, the structure is simple, reliable and practical; on the other hand, the whole-machine data analysis and testing device can ensure the accuracy in measurement of technical parameters so as to manufacture high-quality products; and furthermore, the whole-machine data analysis and testing device can give out different data values according to different geological conditions, test according to a prescribed program and save ground resources.

The invention discloses an automatic water supplementing steam generating device comprising a water tank assembly, a steam generator, a steam pot, a heating body and an anti-burning device. The water tank assembly is flexibly arranged above a water tank seat, the steam generator is fixedly arranged above the water tank seat, the heating body is arranged under the steam pot, the lower end of the water tank is provided with a water outlet valve, the water outlet valve is communicated with the lower end of the steam pot through a connecting pipe, and the connecting pipe is arranged in the water tank; the end of the connecting pipe connected with the water outlet valve is provided with a water inlet valve, the water inlet valve is mutually matched with the water outlet valve, the upper end of the steam pot is communicated with the inner upper end of the water tank of the water tank assembly through an air pressure balance pipe. By the application of the automatic water supplementing steam generating device, automatic water supplementing is achieved, water pumps are omitted, and cost is effectively decreased; by the arrangement of an automatic decompression device and an anti-dry burning temperature sensor, the performance of safety use is high, the pressure of steam outputting is adjustable and potential risk is eliminated effectively by the arranged anti-burning device.

The invention relates to an integral soft sensing element with pressure and non-contact gap measuring functions, and belongs to the technical field of sensors. The integral soft sensing element comprises an insulation encapsulation film, a pressure-sensitive film and a plane type eddy current coil film, wherein the insulation encapsulation film is made of polyimide, the pressure-sensitive film layer is made of conducting polymer composite materials, the plane type eddy current coil film consists of a polyimide film and a copper foil coil compounded on the polyimide film, the conducting polymer composite materials are directly vulcanized on the naked copper foil coil to form an integral structure, and the pressure and non-contact gap measurement is realized through obtaining the impedance of the integral structure. The integral sensing element developed by the invention has the advantages that the softness is good, the thickness is small, the process is simple, the cost is low, the pressure measurement and the non-contact gap measurement can be realized only through one set of sensing system, the integral soft sensing element is applicable to the interlayer pressure and gap measurement of narrow and small curved surfaces of industrial equipment, and the key technology can also be applied to the development of multifunction electronic skin.

The invention provides a heat pipe. The heat pipe comprises a flat pipe, wherein the flat pipe comprises pipe walls which are parallel to each other; a fluid channel is formed between the adjacent pipe walls; external fins are arranged at the outer parts of the pipe walls; and the heights of the fins are gradually reduced from the middle of the transverse section to the two sides of the flat pipe. According to the heat pipe provided by the invention, the heat dissipation of the whole heat pipe is uniform, a local temperature of the heat pipe is prevented from overheating, the heat dissipation effect is improved and the service life of the heat pipe is prolonged.

The invention discloses a grouting pump for a high-pressure constant-flow test.The grouting pump comprises a high-pressure slurry storage tank, a propelling, pressurizing and flow stabilizing system, a built-in stirring system, a slurry input/output system, a monitoring system and a base.The propelling, pressurizing and flow stabilizing system extends into the high-pressure slurry storage tank.The built-in stirring system is located in the high-pressure slurry storage tank so that uniform stirring of output slurry can be achieved.One end of the built-in stirring system makes contact with the propelling, pressurizing and flow stabilizing system in the high-pressure slurry storage tank.The slurry input/output system is communicated with the high-pressure slurry storage tank.The monitoring system is arranged on the slurry input/output system.The high-pressure slurry storage tank and the propelling, pressurizing and flow stabilizing system are arranged on the base.The propelling, pressurizing and flow stabilizing system uses a stepping motor as the power source, the consistency of slurry output flow can be met, the grouting speed is adjusted by adjusting the rotating speed of the stepping motor, and dual-liquid grouting tests of different ratios can be guaranteed when multiple instruments are used at the same time.The requirements for high grouting pressure and constant grouting speed in grouting tests are met.

An measuring system for measuring ultra-thick oil underground temperature and pressure two-parameter (multi-point) dynamic, applied in the art of temperature and pressure measuring technology, consists of a flat valve, a well shutting device, an upper flange, a continuous oil-pipe seal, a cross joint, a connector, an armoured thermocouple, a capillary, a continuous oil pipe and a continuous oil-pipe suspending device. The present invention is characterized in that the upper part of the cross joint is provided with the upper flange and the left part of the cross joint is provided with the flat valve; the upper part of the upper flange is provided with the well shutting device; the right shoulder of the upper part of the upper flange is provided with the continuous oil-pipe suspending device and the continuous oil-pipe seal; the left part of the well shutting device is provided with the flat valve; the continuous oil-pipe suspending device is provided with the continuous oil pipe and the connector; the connector is provided with the armoured thermocouple and the capillary. The system with novel and scientific design can achieve the collecting, displaying, storing and transferring of system pressure and temperature.

The invention discloses a characteristic test bench of a pulse-width modulation (PWM) intermittent spray variable spraying system. The characteristic test bench comprises a measurement and control system and a pipeline system, wherein the measurement and control system comprises an industrial personal computer, a signal conditioning unit, a power output module and an amplifier; the pipeline system comprises a diaphragm pump liquid supply device, an electric overflow device, a plurality of variable spraying units, a constant pressure liquid supply branch, a constant pressure outlet branch, an electromagnetic valve dynamic characteristic test unit and a multi-source pressure surge coupling characteristic test unit; a plurality of transparent pipeline sections and pressure sensors are arranged on a connection pipeline among a diaphragm pump outlet, a proportional overflow valve outlet, an electromagnetic valve inlet and outlet hole, a main pipeline and an electromagnetic valve, so as to carry out internal flow field characteristic test of the pipeline and pressure monitoring by using a high-speed image collection system or a flow field test system. The characteristic test bench of the PWM intermittent spray variable spraying system can be applied to testing of diaphragm pump pressure pulsation characteristics of the PWM intermittent spray variable spraying system, proportional overflow valve dynamic characteristics, electromagnetic valve dynamic characteristics and propagation characteristics of a multi-source pressure surge in the pipeline.

The invention discloses a rodenticide and belongs to the technical field of insect damage removal. The invention provides the rodenticide which is low in cost, high in palatability, easy to store and significant in rat killing effect. The rodenticide comprises 10-80 parts by weight of base material, 0.002-0.5 part by weight rat killing active ingredient and 2-40 parts by weight auxiliary material. The base material is prepared by solid-liquid separation, breaking, sorting, slurrying, dryness and grinding of kitchen waste into powder; a protein content in the base material powder is greater than or equal to 20%; a starch content is greater than or equal to 45%; an oil content is less than 7%; and a water content is less than 10%. The rat killing active ingredient is a safe second generation rat killing active ingredient. The auxiliary material comprises an excipient, an adhesive, a water absorber, a surfactant, a preservative, a colorant, a corrigent and a solvent. The rodenticide is high in palatability, suitable for long-time rat destruction, good in rat killing effect and low in cost; and a novel approach is provided for comprehensive utilization of the kitchen waste.

The invention discloses a supercharging mechanism and an anchor rod comprehensive mechanical performance test platform thereof. The supercharging mechanism comprises a fulcrum assembly, wherein the fulcrum assembly is mounted at the end, far away from a first pressure connecting rod and a second pressure connecting rod, of a pressure applying plate; the fulcrum assembly comprises a fulcrum supportplate which is fixed on the pressure applying plate; a step-down sliding slot is formed in the fulcrum support plate; the step-down sliding slot is glidingly assembled with a limit sliding rod; one end of the limit sliding rod is fixedly connected with a telescopic support plate; the limit sliding rod passes through one end of a stop plate to be fixedly connected with one end of a first fulcrum spring; the other end of the first fulcrum spring is fixedly connected with the pressure applying plate; the telescopic support plate is assembled and fixed with each of the first fulcrum support plateand the second fulcrum support plate; a fulcrum switching electromagnet is mounted between the first fulcrum support plate and the second fulcrum support plate; and the fulcrum switching electromagnet is assembled with one end of a fulcrum switching telescopic shaft; and the other end of the fulcrum switching telescopic shaft passes through the second fulcrum support plate to be assembled and fixed with a fulcrum block.

The invention discloses a pressure device for treating keloids of outer auricles, and belongs to the technical field of medical instruments. The pressure device comprises an ear fixing device, an airbag and a pressurization air pump. The airbag is mounted on the ear fixing device, and is used for pressurizing the keloids on the outer auricles. The pressurization air pump is connected with the airbag, and is used for inflating the airbag. The ear fixing device is used for fixing the airbag to the positions of the outer auricles. The airbag is fixed to the positions of the outer auricles by theear fixing device, and is pressurized by the pressurization air pump, and pressure is provided to the keloids of the outer auricles. The pressure device has great importance in postoperative rehabilitation of the keloids of the outer auricles.

The invention discloses a digital type hydraulic transformer. A main body of the transformer comprises a flow shunting/collecting system comprising n gear pump/motor units and two control valve groups; each control valve group comprises n two-position three-way electromagnetic switch valves; the n gear pump/motor units are fixed side by side through manifold screws and fastening nuts, the displacements of the n gear pump/motor units are sequentially configured as per the law of indexes of 2, and n is an integer larger than 2; the state of the n two-position three-way electromagnetic switch valves of the inlet control valve group corresponds to an n-bit binary number Ni; the state of the n two-position three-way electromagnetic switch valves of the outlet control valve group corresponds to an n-bit binary number No; and pressure and flow conversion between an external load oil port and an external oil source port is realized through binary digital control on the working state of the inlet control valve group and the working state of the outlet control valve group. The transformer is compact in structure, the transformer ratio is convenient and labor-saving to adjust and is large in range, external leakage is avoided, and the energy loss is low.

The invention discloses a molding position optional hydraulic horizontal forging machine control system. The control system comprises an operation box (100), a master control cabinet (200), a remote simulation module (300), a servo driver (400), a hydraulic module (500) and a communication module (600). The master control cabinet (200) is connected with the servo driver (400). The servo driver (400) is connected with the hydraulic module (500). The master control cabinet (200) controls the servo driver (400) to drive the hydraulic module (500) to do rectilinear motion and implement signal feedback according to an input signal so as to realize accurate control over a hydraulic horizontal forging machine. The invention further discloses a corresponding control method. The control system provided by the invention drives the hydraulic module to do rectilinear motion and signal feedback through the servo driver to achieve accurate control over the hydraulic horizontal forging machine. The control system greatly facilitates multi-position and multi-direction die forging on complex parts, is convenient to operate and high in process flexibility and improves the production efficiency.