1281 results about "Pressure stabilization" patented technology

A Fischer-Tropsch synthesis three-phase suspension bed reactor (“suspension bed” also called “slurry bed”) and its supplemental systems, may include: 1) structure and dimension design of F-T synthesis reactor, 2) a gas distributor located at the bottom of the reactor, 3) structure and arrangement of a heat exchanger members inside the reactor, 4) a liquid-solid filtration separation device inside reactor, 5) a flow guidance device inside reactor, 6) a condensate flux and separation member located in the gas phase space at the top of reactor, 7) a pressure stabilizer, a cleaning system for the separation device; an online cleaning system for the gas distributor; an ancillary system for slurry deposition and a pre-condensate and mist separation system located at the outlet of upper reactor. This reactor is suitable for industrial scale application of Fischer-Tropsch synthesis.

The invention discloses a test device for high-pressure combustible gas leakage spontaneous combustion and shock wave induction ignition. The whole test device comprises a test gas bottle, a nitrogen gas bottle, a high-pressure ventilating pipeline, a pressure stabilization valve, an electromagnetic valve, a pressure gauge, a vacuum pump, a high-pressure storage tank, a pressure transducer, an ICP (inductively coupled plasma) pressure sensor, a photoelectric diode, a rupture disk clamp (in which a rupture disk is arranged), downstream pipelines, a schlieren, a high-speed camera, a protection box, an air compressor and the like. The device can be used for (1) researching the influence of factors, such as different leakage pressures, shapes, lengths and diameters of different downstream pipelines, the gas initial temperature, a breakage shape of the rupture disk and obstacles outside an orifice, on the spontaneous combustion ignition, and further completing a spontaneous combustion ignition mechanism; (2) researching a shock wave induction ignition process and disclosing a shock wave induction ignition mechanism and influence factors thereof; (3) realizing the visible research on spontaneous combustion ignition and shock wave induction processes.

The invention discloses a hydraulic transmission-based method and a hydraulic transmission-based device for storing energy and realizing stabilized voltage and constant frequency in wave power generation. In the device, a floating pendulum is connected with a hydraulic cylinder, high pressure oil outputted by a non-rod cavity of the hydraulic cylinder enters a high pressure energy storing device and an oil inlet of a variable motor through a control integrated valve and through a high pressure oil tube, low pressure oil outputted by an oil outlet of the variable motor enters a low pressure big-capacity energy storing device and returns to the rod cavity of the hydraulic cylinder through the control integrated valve, the main shaft of the variable motor is connected with a permanent magnet synchronous generator, and the permanent magnet synchronous generator is connected to a rectifying module and a direct-current electric energy charging-discharging control module and then connected to a stepless unload adjustable load and a storage battery. The high pressure energy storing device and the low pressure big-capacity energy storing device realize the energy storage by absorbing the fluctuation, caused by the change of transient waves, of pressure and flow rate. A controller realizes the pressure stabilization constant frequency by the stepless unload adjustable load and the displacement of the hydraulic motor respectively. The device has the advantage of making the wave power generating device output more smoothly, more free from influence of the wave impact and have higher efficiency.

The invention discloses an experiment simulation system for exploiting natural gas hydrate by using CO2. The system comprises a hydrate reactor, a CH4 gas source, a CH4 supply system, a CO2 supply system, a refrigerating system, a gas recovery system and a data acquisition system, wherein the CH4 gas source is connected with a reaction system and used for providing pressure stabilization for the preparation of the hydrate at the earlier stage; the CH4 supply system is used for recording the using amount of CH4; the CO2 supply system is connected with the hydrate reactor and used for providing a CO2 gas source for the exploitation of the hydrate at the later stage of an experiment; the refrigerating system is connected with the hydrate reactor and used for timely removing heat from the hydrate reactor or supplying heat to the hydrate reactor to keep the temperature condition in the hydrate reactor stable; the gas recovery system is connected with the hydrate reactor and used for recovering and storing mixed gas discharged from the outlet of the hydrate reactor and measuring the flow rate of the mixed gas; and the data acquisition system is connected with the CH4 supply system, the CO2 supply system, the hydrate reactor, the refrigerating system and the gas recovery system respectively and used for acquiring data from the systems. The process of exploiting the natural gas hydrate by displacing the CO2 can be comprehensively researched.

The invention provides an online gas-liquid separation device for an underwater pipeline, and applies to efficient gas separation of well flow of an underwater production system. The gas-liquid separation device realizes online installation and operation of the pipeline and has the characteristics of simplifying of oil and gas gathering and transferring processes, reduction of gathering and transferring energy consumption and compact structure; a uniform gas-liquid mixing device adopts layered screw blades in opposite rotating directions to crush big bubbles to form uniform gas-liquid mixing flow, so that the gas-liquid ratio adaption range of the device is broad; a first-stage axial flow device adopts a single vertical cylinder to implement first-stage vertical high-speed swirling flow gas-liquid separation to remove most liquid phase, a second-stage axial flow device adopts double horizontal cylinders to implement second-stage horizontal layered rotating flow gas-liquid separation to remove the residual liquid flow, and efficient separation of the two-phase well flow is realized; a scrubbing balancer adopts double vertical cylinders to realize buffer pressure stabilization and complete separation of the gas-phase well flow, and a cleaning pipe performs cleaning operation automatically; a gas-liquid separation control system implements remote automatic control so as to control the well flow of the submarine pipeline and realize dynamic balance of pressure of the scrubbing balancer.

The invention relates to an experiment method and device for packer operating performance in oil field, testing contact stress and axial displacement of packer rubber tube through making pressurization, pressure stabilization and pressure removal on the experiment device to test the amplitudes and distribution rules of stress and strain of surface characteristic points of the packer parts under the action of external load. And the experiment method: applying pressure on the central pipe of the packer by electric pressure test pump according to the designed load step, setting the packer and keeping the pressure stable for a period of time and besides, testing the stress data on surface characteristic points of the rubber tube in this course; and finally removing the annulus pressure in the upper part of the packer, and then slowly removing the inner pressure in the central pipe and testing the stress data of the surface characteristic points in this course. And the experiment device: packer central pipe and upper and lower joints of the experiment sleeve are respectively connected with electric pressure test pump; the surface of the experiment sleeve is axially, spirally and equidistantly distributed with bores in the part measuring range, and pressure sensors are installed in the bores. And the invention has features of simple structure, high working reliability and higher sensitivity.

The invention belongs to the technical field of battery, and particularly relates to a method and device for measuring air permeability of a battery diaphragm at different pressures and different temperatures. The method for measuring the air permeability of the battery diaphragm comprises the steps of fixing and sealing the battery diaphragm; stetting a diaphragm temperature by a heating device; introducing air from an air inlet side and setting a pressure value; metering a time required by passing a certain volume of air from the air inlet side; and calculating the air permeability of the diaphragm. The device for measuring the air permeability of the battery diaphragm comprises an air supply system, a pressure stabilization system, a variable temperature measuring system and a metering system. The method and device for measuring the air permeability of the battery diaphragm have the advantages of simple operations, low cost, accurate data and high practicality. Meanwhile, the method and device can measure the air permeability of the diaphragm at different temperatures, ascertain variable relationships between the air permeability of the diaphragm and the temperature, and further study a hole closing temperature and a diaphragm broken temperature of the battery diaphragm, and can predicate battery performance changes caused by temperature variation.

A modified gas delivery cartridge. A conventional straight-sided brass cartridge case is primed and then filled with solid propellant. A burst cup is then inserted in the case mouth. The burst cup is embossed with a cross or other shape to promote predictable rupture. Once the burst cup is in place, the upper edges of the cartridge case are rolled over the burst cup. In operation, the propellant is ignited to produce pressure within the sealed case. This pressure builds steadily until the embossed cross in the burst cup ruptures. The propellant gases are then vented in a metered fashion through the ruptured burst cup. However, the burst cup is retained by the case so that no solid object escapes the high pressure cartridge. In addition, by carefully designing the shape of the burst cup and the components surrounding it, it is possible to create an efficient expansion nozzle to better meter the propellant gases.

The invention provides a pressure-stabilizing, liquid-supplementing and gas-exhausting device of a closed liquid cooling system. The pressure-stabilizing, liquid supplementing and gas-exhausting device of the closed liquid cooling system comprises an air-cooling liquid heat exchanger, a load heating element, a liquid storage tank, a liquid supplementing pump, a spiral micro bubble separator, an electric heating water tank, an expansion tank, a liquid supplying pump, electromagnetic valves, ball valves, and a stop valve. The pressure stabilization, the liquid supplement and the gas exhaust of the closed liquid cooling system are achieved by the liquid supplementing pump, the first electromagnetic valve, the second electromagnetic valve, the second ball valve, the third ball valve, the fourth ball valve, the fifth ball valve and the sixth ball valve, in association with the spiral micro bubble separator. The pressure-stabilizing, liquid-supplementing and gas-exhausting device of the closed liquid cooling system is low in cost and convenient in operation. The pressure-stabilizing, liquid-supplementing and gas-exhausting device of the closed liquid cooling system is of a great practical value.

The invention discloses a wide-area air inlet pressure regulating system for a hypersonic wind tunnel. A corresponding air inlet pressure regulating mode is selected according to the incoming flow pressure of a front chamber; wide-area high-precision air inlet pressure regulating requirements for providing vacuum incoming flow pressure, medium-pressure incoming flow pressure and high-pressure incoming flow pressure can be met at the same time; large-range regulation of airflow flow under different Mach number spray pipes of the hypersonic wind tunnel can be achieved, the pressure regulating precision is high, preparation time of air exhaust and preheating before a wind tunnel test is greatly shortened, a pressure pre-charging function before the test is achieved, the pressure is stable, the regulating speed is high, and the test blowing time can be effectively prolonged.

The invention discloses an airborne oxygen preparing-nitrogen preparing coupling system with an expansion machine and a method thereof, and belongs to the aviation system technical field. A specific principle comprises that entraining air from an engine gas compressor is divided into two ways after pressure stabilization and cooling; one way of entraining air is used for doing work to the expansion machine for driving two compressors; the other way of entraining air is boosted by the first compressor, and then passes through a hollow fiber membrane nitrogen preparing system to prepare nitrogen-rich gas for an inserting aircraft fuel tank; discharged exhaust gas (oxygen-rich gas) in the nitrogen preparing system is boosted by the second compressor and then passes through a molecular sieve oxygen preparing system to obtain oxygen, and oxygen flows into a cabin or a cockpit and is outputted as oxygen for the flight crew to breathe. The system has no electrically driven equipment, is feasible to prepare, high in separation membrane efficiency, reliable in operation, small in size and light in weight, and conforms to the airborne equipment requirements.

The invention provides a single cylinder diesel EGR device based on high-pressure air two-stage supercharging and a control method. The single cylinder diesel EGR device comprises an air inlet three-way valve, an exhaust three-way valve, a bypass valve, a one-way valve, an electromagnetic control valve, a first turbocharger, a second turbocharger, a waste gas pressure-stabilization tank, an EGR cooler, a temperature sensor and a flow meter. According to the single cylinder diesel EGR device, the two turbochargers in series connection are controlled so that two-stage supercharging of EGR waste gas can be achieved through high-pressure and high-speed compressed air, the problem of EGR waste gas backflow under different air inlet pressures, especially high air inlet pressure is effectively solved, and meanwhile the requirements for EGR adjustment under different medium, high and low work conditions can be met. The single cylinder diesel EGR device is particularly suitable for marine diesel engine energy saving and emission reduction or single cylinder diesel testing places or other place.

The invention provides a water-spray screw steam compressor. Three seals are arranged between a working cavity of the compressor and a bearing cavity; steam seal is realized through spraying high-pressure liquid water in space between the first seal and the second seal; besides seal through spraying water, the steam absorbing superheat degree can be lowered through spraying water in a steam absorbing cavity to increase the mass flow rate of compressed steam; or water is sprayed in a compression cavity at the steam absorbing end moment to effectively lower the temperature of compressed steam and the steam discharging superheat degree, so that the working process of the compressor is similar to a constant temperature compression process, and the efficiency of the compressor is improved. A pressure stabilization tank is arranged on the steam discharging side of the compressor; the steam pressure in the pressure stabilization tank is adjusted to ensure efficient operation of the compressor under different working conditions. High-temperature water flowing out of a water route of the pressure stabilization tank is mixed with low-temperature softened water or distilled water, the mixed water enters a heat exchanger and is recycled to provide the steam heat of a user and to realize steam superheat degree adjustment; adjustment of temperature and flow of sprayed water can be realized through adjusting flow of the softened water, distilled water or water entering the heat exchanger.

The invention provides a system for temperature reduction and pressure stabilization of a liquefied natural gas storage tank, comprising a liquid nitrogen delivery device, a liquefied natural gas storage tank and a discharge duct, wherein the liquefied natural gas storage tank is internally provided with a heat exchange tube; the inlet of the heat exchange tube is connected with the liquid nitrogen delivery device through a pipeline, and the outlet of the heat exchange tube is connected with the discharge duct through a pipeline; the liquefied natural gas storage tank is provided with a pressure sensor connected with the liquid nitrogen delivery device; the discharge duct is internally provided with a vaporizer; and the liquid nitrogen delivery device is externally connected with a liquid nitrogen source. The invention also provides a method for temperature reduction and pressure stabilization of the liquefied natural gas storage tank, which is realized by the system. In the system provided by the invention, the temperature and pressure conservation functions of the liquefied natural gas storage tank can be realized through the arrangement of the heat exchange tube in the liquefied natural gas storage tank, thus the structure is simple and easy to understand, and the system is suitable for various liquefied natural gas storage tanks and has low design cost and the like.

The invention discloses a Coanda airfoil panel ventilating fan. The Coanda airfoil panel ventilating fan comprises a cabinet body, Coanda airfoil panels, two half Coanda airfoil panels, a ventilating fan and gauze. The cabinet body comprises a fan body, a pressure stabilization cavity and a frame used for assembling the Coanda airfoil panels and the half Coanda airfoil panels; a cabinet body front panel and a cabinet body rear panel are provided with air inlets which are communicated with the fan cavity; the inner side end surface of the cabinet body front panel and the inner side end surface of the cabinet body rear panel are separately provided with two parallel guide rails; two movable baffle plates are arranged between every two guide rails; and the gauze is arranged on the frame. The pressure stabilization cavity is arranged on the upper end of the fan cavity and is communicated with the fan cavity through a ventilation opening; and the frame is arranged on the upper end of the pressure stabilization cavity. The ventilating fan is arranged on the upper end of the fan cavity; the Coanda airfoil panels and the half Coanda airfoil panels are arranged in the frame; one end of each of the Coanda airfoil panels and the half Coanda airfoil panels is communicated with the pressure stabilization cavity, and the other end is connected with the wall plate of the frame and is sealed through the wall plate of the frame; the two half Coanda airfoil panels are separately connected with the wall plate of the frame to form a pipe body inner cavity; and the Coanda airfoil panels are arranged between the two half Coanda airfoil panels.

A constant head mass-flow seepage deformation water pressure automatic control device comprises a water supply tank, a water inlet pipe is arranged at the bottom of the water supply tank, and the bottom of the water supply tank is communicated with the bottom of a seepage deformation instrument through a water conveying pipe which is provided with a booster pump, an automatic waterflow regulation valve and a pressure gage. The booster pump and the automatic waterflow regulation valve are used for ensuring that constant head mass-flow seepage deformation water with stable pressure is provided for the seepage deformation instrument, and accuracy and stability of experiment data are ensured. A water return pool and a water return pipe with a self-priming pump are arranged to recycling seepage deformation water, and the water resource is saved. Due to the fact that water is recycled in the indoor environment, external water is not needed, water temperature changes in the testing process are effectively controlled, influences of water temperature on a testing result are eliminated, and testing precision is improved. Through the combination of the booster pump, the automatic waterflow regulation valve and the high-precision pressure gage, automatic control is achieved, and labor intensity in the testing process is greatly lowered.

The invention discloses an electronic type pulse width modulation (PWM) intermittence spray type variable spraying controller. The controller is composed of a power source, a control panel, a PWM signal generator, a phase inverter, an electromagnetic valve drive circuit, electromagnetic valves, a proportional overflow valve and a proportional overflow valve control circuit. The electromagnetic valves are placed in front end pipelines of all spray heads in series. One end of the proportional overflow valve is connected with a spray rod main pipeline, and the other end of the proportional overflow valve is connected with a liquid medicine jar. The PWM signal generator can output multichannel PWM signals which are same in frequency, and independent and adjustable in duty ratio, and the frequency and the duty ratio can be adjusted through rotary knobs on the control panel. The proportional overflow valve control circuit adjusts the opening height of the proportional overflow valve according to set spray pressure, machine set operating speed and the total number of electromagnetic valves which are opened at present, and keeps system spray pressure stable. The controller is convenient to use, and can be used for controlling application dosages of a spray rod type spraying machine due to the fact that a driver can adjust the spray pressure and application dosages of each spray head on line through the rotary knobs on the control panel.

The invention relates to an automatic grouting control device of a push bench, comprising a grouting master pipe, a grouting dividing pipe, a plurality of grouting components and a control component; the grouting component is arranged at the tail end of the grouting dividing pipe and comprises two grouting branch pipes which are parallelly connected; one grouting branch pipe is sequentially provided with a pneumatic valve used for on and off of the grouting branch pipe and a pressure sensor used for detecting grouting pressure; the other grouting branch pipe is provided with a manual valve; the control component comprises an industrial computer, an input module and an output module; the industrial computer can preset the pressure values of all the grouting ports and deviation range and carry out operation and storage of values; the input module converts pressure signals input by the pressure sensor into digital signals and transmits the digital signals to the industrial computer; and the output module digital signals transmitted by the industrial computer into trigger signals so as to control the opening and closing of the pneumatic valve. The automatic control device realizes automatic grouting process by adopting grouting pressure as control parameters, has the advantages of fast response, stable grouting pressure and high construction efficiency and is applicable to grouting construction of the push bench.

A fluid leak containment system for containing leaks of fluids, such as, but not limited to fossil fuels, during an underwater extraction process is disclosed. The fluid leak containment system may be formed from a generally extendible, conically shaped containment structure including a plurality of decreasingly sized housing sections extending from an inlet to a smaller sized outlet. The housing sections may be formed from flexible materials that enable easy storage and rapid deployment. The outlet directs fossil fuels into a fluid containment device, such as, but not limited to, a vessel. The extendible containment housing may include an anchoring base configured to retain an inlet of the housing section at a bottom of a water body at a leak site such that the inlet envelopes the leak site yet also enables water from outside the first extendible containment housing section to enter the housing, thereby providing for pressure stabilization.

The invention discloses an automatic regulating device for flow pressure of a gas chromatograph, which comprises at least one pressure stabilization valve and at least one needle valve. The automatic regulating device also comprises at least one proportional valve, at least one flow sensor and a detection control circuit. The pressure stabilization valve is connected with the needle valve and the proportional valve. An air source of the gas chromatograph passes through the pressure stabilization valve, the needle valve and the proportional valve, is detected by the flow sensor and then enters a detector. The detection control circuit regulates the proportional valve to control the flow according to the data and the preset value provided by the flow sensor. The automatic regulating device for the flow pressure is adopted to substitute for a mechanical regulating valve and a mechanical pressure gage, achieves the flow control precision of the mechanical valve, and meets the basic requirement on automatic operation of the gas chromatograph.

The invention relates to a cement paste system capable of preventing oil, gas and water from channeling, in particular to a cement paste system choosing method capable of preventing oil, gas and water from channeling. The cement paste system choosing method is characterized in that (1) aiming layers with short oil layer sealing sections and shallow oil pool burial depth can choose a rapid hardening cement formula; (2) aiming layers with complex stratums, abnormal interlayer pressure and active stratum fluid can choose a water loss reduction coagulation promoting formula, water loss reduction expansion cement paste formula, a right angle densification performance formula, or a water loss reduction expansion early strength cement paste formula; (3) aiming layers with large oil layer span, long sealing sections and abnormal interlayer pressure can choose three coagulation cement paste system according to pressure stabilization principle. The cement paste system choosing method can prevent pressure leakage stratums and guarantee fluid of pressure stabilization stratums.

The invention discloses a gas-solid two-phase erosion wear testing device. A first compressor is connected with a combustion chamber by virtue of a pressure stabilization tank and a dryer; a fuel nozzle and an ignition device are arranged on the combustion chamber; a feeder and a second compressor are connected to a particle mixer; one path of high-temperature gas generated by the combustion chamber passes through a needle valve and an auxiliary heating pipe and then are connected to one inlet of an organic glass test section; another path of the high-temperature gas generated by the combustion chamber and the particle outlet of the particle mixer are connected into the other inlet of the test section by virtue of a two-phase acceleration device; gas-solid two-phase particles in the test section are sprayed to a target material; a thermocouple and a separator are connected with the test section; the separator is communicated with the atmosphere; a CCD camera is aligned with the target material in the test section; and the motion condition of spraying the gas-solid two-phase onto the target material is observed and recorded by using a PIV testing technology and a computer. According to the device disclosed by the invention, the impact rebound rule of spraying the micron-level particles onto the target material and the deformation and corrosion conditions on the target material can be researched.

The invention discloses a sprayer nozzle used for a tail jet flow interference test. The sprayer nozzle used for the tail jet flow interference test comprises a tail jet flow central cone and a conventional tail sprayer nozzle, wherein the conventional tail sprayer nozzle is connected with a pressure stabilization chamber arranged in an experimental model; the pressure stabilization chamber is communicated with a high-pressure air supply pipeline; the central cone of a tail sprayer nozzle is arranged in the conventional tail sprayer nozzle to form an annular tail sprayer nozzle. According to the sprayer nozzle, the high-pressure air supply pipeline with a small caliber can meet the test requirement of big-caliber tail jet flow so as to avoid the problems that wind tunnel blockage is enlarged since the size of a support arm is enlarged by a big-caliber high-pressure pipeline, interference on model aerodynamic force is increased by back support and the like. A 1.2m-magnitude wind tunnel can be used for carrying out the tail jet flow interference test, and therefore, the precise simulation of the Mach number and the blowdown ratio (Pj/P infinity) of big-caliber sprayer nozzle jet flow can be finished under a small-caliber high-pressure air supply pipeline.

The invention relates to an automatic capacity detecting method for an irregular vessel cabin which is characterized in that a pressure water source passes through a water pipeline, is subjected to the pressure reduction and pressure stabilization by a pressure reduction and stabilization valve (4), and then is subjected to the flow measuring by a flow meter (8), further is subjected to the temperature measuring by a first temperature transducer (10), and flows into an irregular vessel cabin; a pressure transmitter (6) is used for detecting the water pressure of the water outlet end of the pressure reduction and stabilization valve (4); a level gauge (12) is used for measuring the liquid level inside the irregular vessel cabin in a real-time manner; a second temperature transducer (13) is used for measuring the liquid temperature inside the irregular vessel cabin in a real-time manner; and a control system is used for obtaining the volume of the corresponding liquid level of the vessel cabin according to the flow data measured by the flow meter (8) and the liquid level measured by the level gauge (12), and performs the volume rectification according to the temperature difference of the first temperature transducer (10) and the second temperature transducer (13). According to the invention, the labor intensity of the operating personnel is reduced, the working efficiency is improved by more than two times, so that the automatic capacity detecting method and device have very high application value.