326 results about "High pressure" patented technology

In semiconductor devices in which both NMOS devices and PMOS devices are used to perform in different modes such as analog and digital modes, stress engineering is selectively applied to particular devices depending on their required operational modes. That is, the appropriate mechanical stress, i.e., tensile or compressive, can be applied to and/or removed from devices, i.e., NMOS and/or PMOS devices, based not only on their conductivity type, i.e., n-type or p-type, but also on their intended operational application, for example, analog/digital, low-voltage/high-voltage, high-speed/low-speed, noise-sensitive/noise-insensitive, etc. The result is that performance of individual devices is optimized based on the mode in which they operate. For example, mechanical stress can be applied to devices that operate in high-speed digital settings, while devices that operate in analog or RF signal settings, in which electrical noise such as flicker noise that may be introduced by applied stress may degrade performance, have no stress applied.

The invention relates to a ground electrode circuit grounding protective system of a high-voltage DC transmission system. The system is provided with two parallel ground electrode circuits respectively connected in series with a high-voltage DC breaker, sets an allowable range of current differences of two ground wires and an allowable range of the subtraction of the line current sum of the two ground wires from the line current difference of the two ground wires and then sequentially executes the following control program: (1), reading currents of the two ground wires; (2), judging and comparing whether an absolute value of the current difference of two ground wires is larger than the allowable range thereof, if the absolute value is not larger than the allowable range, returning to the step (1); if the absolute value is larger than the allowable range, (3) then, judging whether the subtraction of the line current sum of the two ground wires from the line current difference of the two ground wires is smaller than or equal to the allowable range; if the subtraction is smaller than or equal to the allowable range, returning to the step (1); and if the subtraction is not smaller than or equal to the allowable range, enabling the high-voltage DC breaker which is connected in series with the ground wire with larger line current to trip and terminate the program. The system can avoid the imbalance of the ground electrode circuits due to the failures of the ground electrode circuits and protects the caused DC transmission system to be closed down.

Disclosed herein is a back-grooved laminate wood flooring in which a wood veneer of high pressure resin impregnation laminate (WPL) is laminated on a base selected from a vinyl chloride (PVC) resin layer, on oriented strand board (OSB), a high-density fiberboard (HDF) and a waterproof plywood. More specifically, the back-grooved laminate wood flooring comprises a WPL (20), an adhesive layer (40) and a base (10) (a polyvinyl chloride resin layer, OSB, HDF or waterproof plywood) wherein the WPL (20) includes a base-reinforcing layer (24), a natural veneer layer (23), a resin-impregnated overlay layer (22) and a surface UV coating layer (21) layered in this order from the bottom. The back-grooved laminate wood flooring further exhibits excellent soundproofing performance.

The invention discloses a base-movable aeroengine dual-rotor system model experiment platform, which comprises a base rotary table seat, a transmission shaft A, a transmission shaft B, a base rotary table and an inner rotor and outer rotor subsystem, and the transmission shaft A and the transmission shaft B can synchronously rotate; the inner rotor and outer rotor subsystem mainly comprises an inner rotor, an outer rotor, an inner rotor low-pressure compressor rotary table, an inner rotor low-pressure turbine rotary table, an outer rotor high-pressure compressor rotary table, an outer rotor high-pressure turbine rotary table, three bearing blocks (A, B, C) and a rotor system base fixedly connected with the base rotary table; the inner rotor is inserted in an outer rotor and supported on the bearing blocks (A, B), the bearing block A is a damping-adjustable support, and the bearing block B is a flexible support; one end of the outer rotor is supported on the inner rotor by ball bearings, and the other end of the outer rotor is supported on the bearing block C, which is a flexible support; and infrared optical sensors and eddy current sensors are arranged on both the inner rotor and the outer rotor to test the vibration signal of the system. The base-movable aeroengine dual-rotor system model experiment platform can effectively simulate the dynamic experiment of a dual-rotor system of an aeroengine under actual working conditions.

The invention discloses a comprehensive control method for rockburst in a multiple-coalbed mining mine. According to the method, rockburst is controlled by employing two-side blasting for pressure relief, pressure-relief chamber establishment and coalbed high-pressure water injection according to monitoring data. The source of the monitoring data comprises electromagnet radiation monitoring, drilling-cutting-method pulverized coal monitoring, mine pressure monitoring and micro-seismic monitoring system monitoring. Two-side blasting for pressure relief means that during tunneling of upper gangway and lower gangway of a working face, following closely the tunneled working face, deep-hole pressure-relief blasting is arranged to the lower side of the upper gangway and the upper side and the slower side of the lower gangway. Pressure-relief chamber establishment means that the pressure-relief chambers are disposed on the lower side of the upper gangway and the upper side and the lower side of the lower gangway every 40 meters during tunneling. The coalbed high-pressure water injection means that advance water injection accompanied by coalbed high-pressure water injection is carried out on the upper sides and the lower sides of the gangways and in the pressure-relief chambers for rockburst control. According to the method of the invention, multiple methods are used for comprehensive forecasting, so that the rockburst control level is improved, the loss caused by rockburst is effectively reduces, and thus the pertinence and the effectiveness of the rockburst control are substantially enhanced.

The invention relates to a cyclic production method of glyphosate, belonging to the technical field of pesticide production techniques. The production method comprises steps as follows: the raw material dimethyl phosphite is subjected to an alkyl ester method to obtain glyphosate and a glyphosate mother solution; the glyphosate mother solution is treated to obtain a secondary alkali mother solution; the secondary alkali mother solution is subjected to catalytic preoxidation, high-temperature high-pressure air electrocatalytic degradation and liquid membrane extraction to obtain a liquid membrane concentrated solution and a saliferous liquid membrane diluted solution; the liquid membrane concentrated solution is subjected to active carbon decoloration, concentration by evaporation, and high temperature polymerization to obtain sodium tripolyphosphate; the saliferous liquid membrane diluted solution is filtered by a nanofiltration membrane to obtain a membrane concentrated solution and a membrane diluted solution; the membrane concentrated solution returns to the catalytic preoxidation step to be recovered; the membrane diluted solution enters an MVR (mechanical vapor recompression) system to be subjected to concentration by evaporation, thereby obtaining sodium chloride crystal, distilled water and a mother solution; and the sodium chloride crystal, distilled water and mother solution are respectively utilized. The invention lowers the production cost, enhances the utilization ratio of the product, reduces the discharge of waste liquor in the glyphosate production procedure, is environment-friendly, and has obvious comprehensive economic benefit and social benefit.

A fluid filter includes a housing having a tapping plate with a first aperture. A center tube is arranged in the housing proximate to the tapping plate. The center tube includes a second aperture. An elastomeric valve assembly is arranged between the center tube and the tapping plate. The valve assembly comprises a separate two-piece relief valve and anti-drain back valve. The anti-drain back valve is arranged adjacent to the first aperture for selectively blocking the first aperture to prevent fluid from exiting in the side of the filter during engine shut down. The relief valve is arranged adjacent to the second aperture for selectively blocking the second aperture to permit fluid to flow past the relief valve during high differential pressure conditions such as cold starts and plugged filter conditions.

The invention discloses a method for updating heavy hydrocarbon to produce light oil and a plasma hydrogenation reactor for the method. The plasma hydrogenation reactor comprises a cavity and a preheater, wherein the cavity is surrounded by low-voltage electrode reaction tubes, the top and the bottom of the cavity are respectively sealed by an upper insulating flange and a lower insulating flange, the inside of the cavity is provided with high-voltage electrodes extending in the axial direction of the cavity, the low-voltage electrode reaction tubes and the high-voltage electrodes are respectively connected with a plasma power supply, the inside of the cavity, corresponding to the reaction areas of the high-voltage electrodes, is provided with insulating medium, the outside of the cavity is sheathed with a heating furnace, the preheater is communicated with the cavity by a material inlet, and the inside of the cavity, corresponding to a gas product outlet, is provided with a gas and liquid separating area. Compared with the traditional catalytic hydrogenation, the amount of free radicals of active hydrogen is increased in a doubling way by the plasma hydrogenation, the generation amount and generation speed of the free radicals of the active hydrogen can be adjusted through adjusting the discharging parameters, and the generation amount and generation speed of the free radicals of heavy oil can be adjusted through adjusting the temperature, so as to realize a matching purpose.

The invention relates to a low-permeability coal high-pressure gas cycle pulse fracturing anti-reflection experimental method belonging to the field of low-permeability coal seam reinforcement anti-reflection technology. The low-permeability coal high-pressure gas cycle pulse fracturing anti-reflection experimental method adopts a low-permeability coal high-pressure gas cycle pulse fracturing anti-reflection experimental device, and comprises the following steps of: (1) installing a monitoring element; (2) measuring the coal permeability before anti-reflection; (3) starting a high-pressure gas impact system for impacting coal briquettes in a circulating way; and (4) measuring the coal permeability after anti-reflection; and the low-permeability coal high-pressure gas cycle pulse fracturing anti-reflection experimental device comprises a coal sample, a blasting cylinder mechanism, a triaxial loading system, a high pressure gas impact system and a coal permeability measurement system.

The disclosure is drawn to methods of drilling wells utilizing blow out prevention components of differing pressure ratings. In the initial drilling phase, a lower pressure rated blow out prevention component is used. In a subsequent drilling phase where a reservoir of a natural resource is penetrated, a higher pressure rated blow out prevention component is used.

The invention provides a hot-dry rock fracturing high-pressure extraction laboratory simulation device. The device comprises a fracturing fluid injection system, a proppant injection system, a high-pressure gas boosting injection system, a fracturing body, an annular pressure applying system and a high-pressure pipe valve. The proppant injection system comprises indirect proppant injection and curing. The high-pressure gas boosting injection system comprises gas boosting and indirect gas injection. The fracturing body comprises a sample fracturing chamber and a sample annular-pressure chamber. The fracturing chamber comprises a three-dimensional fixing support and a three-dimensional hydraulic system. The three-dimensional hydraulic system comprises a hydraulic sliding cavity and a hydraulic moving plug. The sample annular-pressure chamber comprises an annular-pressure chamber steel plate and an inner gum sleeve, a cavity is formed between the gum sleeve and the steel plate, and fluid is injected to realize pressure coating effect. Fracturing fluid injection and annular pressure application are both realized by connection of a high-pressure pipeline with a high-pressure control component. A split module combination structure is adopted, original samples of fracturing samples are ensured to be unchanged, proppant injection is performed accurately, high-pressure gas is injected for displacement and reproduction, and recovery ratio is increased. The device has the advantages of novel structure and safety and durability.

The invention relates to a series coupling inductance high-voltage direct current breaker and a control method thereof. The breaker comprises a change-over switch, a switching circuit and an energy consumption device which are connected in series. The change-over switch adopts a mechanical switch, the switching circuit adopts a coupling circuit, and the energy consumption device adopts a lightning arrester. The high-voltage direct current breaker is connected with a control circuit, when a failure happens, the mechanical switch detects failure current, and transfers the failure current to the coupling circuit. The failure current charges a capacitor in the coupling circuit, flows over current change of a conductance L1, generates change current which is opposite to the failure current in direction and flows through a conductance L2. The failure current and the change current are overlaid, and the overlaid current makes a zero crossing point on a main circuit of the mechanical switch to cut off the mechanical switch. Voltage on two ends of the capacitor reaches operation voltage of the lighting arrester so that the lightning arrester acts and energy is released from the lightning arrester. The series coupling inductance high-voltage direct current breaker can meet requirements of quick cutting off of the failure current, can realize non-arc cutting-off of the mechanical switch, and the control method is simple and easy to operate, and complete in function.

The invention discloses a hydrocracking method of low-energy-consumption, productive and high-quality jet fuel. The hydrocracking method comprises the steps that after being mixed with hydrogen, raw oil undergoes heat exchange twice, passes through hydrofining and first cracking reaction zones in sequence after passing through a heating furnace and is separated to obtain middle distillate, and the middle distillate enters a second cracking reaction zone to be cracked, wherein the first cracking reaction zone at least comprises two cracking catalysts, namely an upstream filling catalyst I and a downstream filling catalyst II; the catalyst I contains 15-50wt% of modified Y molecular sieve; the catalyst II contains 3-30wt% of modified Y molecular sieve; the content of the modified Y molecular sieve in the catalyst I is higher than the content of the modified Y molecular sieve in the catalyst II by 10-25%. The hydrocracking method has the advantages that the high temperature and high pressure countercurrent heat transfer technology and the hydrocracking catalyst grading technology are organically combined and the hydrocracking reaction heat is comprehensively utilized, thus improving the quality of the target product and reducing the project investment and the operation energy consumption while maintaining the selectivity of the catalysts.

The electrode for high-voltage in-situ impedance spectroscopy measurement of the present invention and its preparation method and application belong to the technical field of in-situ measurement of electrical quantities under high-voltage conditions. The electrode consists of an aluminum oxide protective layer (3) deposited on the surface of the diamond anvil (2) and a metal film electrode (1); the metal film electrode (1) is circular in the center of the anvil surface of the diamond anvil (2), Copper wire (5) is bonded to the metal film electrode (1) on the side of the diamond anvil (2); the metal spacer (4) is used as another electrode, forming an axisymmetric electrode together with the metal film electrode (1) system. Electrodes are prepared by magnetron sputtering, molybdenum coating, aluminum oxide deposition, photolithography and chemical corrosion. The invention solves the problems of electrode fixing and sample cavity insulation, and can ignore the influence of the parasitic capacitance and inductance of the system on the measurement results, making it possible to measure the material impedance spectrum in situ with the diamond anvil under high pressure.

The invention provides a manufacturing technique of a luminous LED sandwich glass capable of luminous with controlled luminous effect; a film structure of the LED sandwich glass includes a glass plate, an adhesive layer, a LED layer and a conductive coated glass plate in order. The main manufacturing steps are as follows: cleaning and drying the conductive coated glass plate, scribing a pre-designed LED circuit thereon, adhering LED and a power source lead, drying it, paving the intermediate adhesive layer, closing sheets, undergoing vacuuming and pre-pressing high pressure and temperature treatments of a high-pressure autoclave; designing various LED layout circuits on the LED luminous sandwich glass, so as to control luminous quantity, luminous effect and various luminous acts of the whole glass.

The invention relates to vehicle cleaning tools, in particular to a cleaning brush, a cleaning device and a water-saving efficient cleaning device. The cleaning brush comprises a cleaning brush body. The cleaning brush body is provided with a cleaning brush head and a driving water pipe which is arranged on the lower side of the cleaning brush head. The cleaning brush head comprises a cylindrical brush head body and brush bristles, wherein the two ends of the cylindrical brush head body are hinged to the cleaning brush body, and the brush bristles are arranged on the brush head body. The driving water pipe is provided with water holes in the direction facing towards the brush bristles, the top of the driving water pipe is sealed, and the other end of the driving water pipe is communicated with a water conveying pipeline. The cleaning device is formed by the way that the cleaning brush is communicated and connected with a running water pipe through the water conveying pipeline. The water-saving efficient cleaning device comprises the cleaning brush, a water tank, a water pump and a power mechanism. The water tank, the water pump and the cleaning brush are in communication connection in sequence. The power mechanism drives the water pump to generate high pressure water, and the high pressure water is sprayed out through the water holes of the driving water pipe on the cleaning brush to drive the cleaning brush head to rotate at a high speed.

The invention discloses a high-pressure sealing nitrogen spring lever clamping device. An oil cylinder end cover is installed at the bottom of an oil cylinder body in a sealing mode, an oil cylinder piston is movably installed in the inner cavity of the oil cylinder body, the position between the inner cavity of the oil cylinder body and the large-end portion of the oil cylinder piston is sealed, the extended end of the oil cylinder piston penetrates through the top of the oil cylinder body to be movably connected with a press arm, the position between the extended end of the oil cylinder piston and the top of the oil cylinder body is sealed, the top of the oil cylinder body is movably connected with one end of a connecting rod, the other end of the connecting rod is movably connected with the press arm, and an oil inlet channel is arranged at the top of the oil cylinder body. A nitrogen spring full of nitrogen in the inside is arranged between the large-end portion of the oil cylinder piston and the oil cylinder end cover. The high-pressure sealing nitrogen spring lever clamping device utilizes the high-pressure sealed nitrogen spring to perform propulsion, clamps a workpiece through a hinge mechanism, does not need a power source, achieves pressure maintaining and clamping through the nitrogen spring, is high in stability, free of pollution and large in clamping stroke, saves energy, can adjust the clamping height and is driven to lift the press arm through oil pressure when the workpiece is loosened.

The invention discloses an intelligent monitoring device for temperature and insulation state of a 330KV high-voltage cable in a hydropower station. The device is characterized by being provided with a central processing module unit (CPU), a data acquisition and conversion unit, a light transmitting/receiving module, an alarm output module, a plurality of optical fiber temperature sensors and a plurality of current sensors, wherein the data acquisition and conversion unit is used for transmitting digital signals to the CPU under the control of the CPU; the light transmitting/receiving module is used for transmitting electrical signals to the data acquisition and conversion unit; the alarm output module can be used for communication with a remote monitoring system; the optical fiber temperature sensors are respectively arranged at the joints of the high-voltage cable to be detected and used for connecting temperature detection signals to the light transmitting/receiving module; and thecurrent sensors are respectively arranged on joint metal sheaths of the high-voltage cable to be detected and used for connecting current detection signals to the data acquisition and conversion unit. The device is particularly suitable for safety monitoring of the 330KV high-voltage cable in the hydropower station, can realize real-time monitoring of the temperature and the insulation state of the cable in the hydropower station, and can also ensure self safety.

The invention relates to an energy gradient utilization type hydrogen thermal compression system. The system comprises 1-100 stages of hydrogen thermal compressors located in different working temperature intervals and a high-pressure hydrogen total pipe, wherein the hydrogen thermal compressors are provided with low-pressure hydrogen inlets, high-pressure hydrogen outlets and 1-100 metal hydride reaction beds; the low-pressure hydrogen inlets are connected with a low-pressure hydrogen pipeline, and the high-pressure hydrogen outlets are connected with the high-pressure hydrogen total pipe through a high-pressure hydrogen pipeline; an external heat source sequentially passes through multiple stages of the hydrogen thermal compressors through an external heating pipeline from the high working temperature interval to the low working temperature interval; and an interstage heat exchange pipeline is arranged between each two adjacent hydrogen thermal compressors, and an inner-stage heat exchange pipeline is arranged in each stage of the hydrogen thermal compressor. According to the energy gradient utilization type hydrogen thermal compression system, by adequately utilizing reaction heat released during hydrogen absorption of the reaction beds of the hydrogen thermal compressors by virtue of metal hydride as well as sensible heat released during a cooling operation, the thermal efficiency of each hydrogen thermal compressor is improved, and the range and selectivity of waste heat utilization are expanded.

The invention discloses a method for preparing high-resilience thermoplastic polyurethane foamed particles and a molded body thereof. Thermoplastic polyurethane particles are placed in an autoclave, injected high-pressure mixed fluid is one or two of CO2, N2, HFC and HCFC, one or two of chloroform, ethanol, methanol, acetone, anone, butanone, pyridine, N-methyl pyrrolidone, N,N-dimethylformamide and N,N-dimethyl acetamide serve as an organic cosolvent, and the high-pressure mixed fluid is enabled to be in a saturated state in the thermoplastic polyurethane particles and then is placed in hot air for foaming, thereby obtaining the thermoplastic polyurethane foamed particles, of which foamed pore structures are uniform and are closed-pore structures. The thermoplastic polyurethane foamed particle molded body, which is light in weight, high in resilience and controllable in shape size and has good mechanical properties, can be obtained through injecting the thermoplastic polyurethane foamed particles in a mold and adjusting mold pressing temperature and pressure so as to soften heated surfaces of the foamed particles.

The invention relates to a cleaning system for honeycomb-shaped plasma free radicals. The cleaning system comprises a mechanical arm, a plasma generator, a rotary base and an air inlet system. The cleaning system is characterized in that: the plasma generator is fixed on the mechanical arm; the plasma generator consists of upper electrodes and a lower electrode which are mutually insulated and is positioned in a shell; the upper electrodes are installed on an insulating board and consist of a plurality of column-shaped electrodes which are wrapped by an insulating medium; the lower electrode is a metal electrode which is provided with honeycomb-shaped holes; an air inlet chamber is arranged between the upper electrodes and the lower electrode; each column electrode in the upper electrodes penetrates through the air inlet chamber and inserts into a honeycomb-shaped hole of the lower electrode to form a certain discharging gap with the honeycomb-shaped hole; the discharging gaps penetrate through the air inlet chamber; the air inlet chamber is connected with a high-pressure air source through an air conduit; and plasmas are generated in the honeycomb-shaped holes and are sprayed on the silicon chip which is placed on the surface of a rotary chassis from the honeycomb nozzles of the lower electrode under the drive of air pressure, so that the photoresist and the organic pollutants on the surface of the silicon chip are eliminated.

The invention discloses an automatic carbon dioxide fire extinguishing system and relates to a fire extinguishing system. The system comprises a plurality of independent unit systems, wherein each unit takes charge of a corresponding protective zone; carbon dioxide storage bottles are suspended on a fire extinguishing agent bottle group bracket; each carbon dioxide storage bottle is connected with a collecting pipe through a high-pressure hose; selector valves for combining distribution systems are arranged between the collecting pipe and a master pipeline; each selector valve corresponds to one protective zone; a fire extinguishing agent delivery pipe extends into a fire protection zone; a nozzle is arranged at the tail end; a fire detector is arranged inside each protective zone; a start steel cylinder is connected with each carbon dioxide storage bottle through a start pipeline. The system is efficient and reliable automatic fire extinguishing equipment, can automatically detect a fire, automatically alarm and automatically put out a fire, comprises three operation modes (full-automatic start, manual start and mechanical emergency start), adopts the carbon dioxide as the fire extinguishing agent, does not contaminate articles, is simple to clean after a fire disaster, good in insulativity, low in cost, convenient to install, reliable in performance, efficient and timely.