96 results about "Gas cylinder pressure" patented technology

The invention discloses an electric propulsion testing platform gaseous-propellant supply device which consists of a high pressure gas cylinder, a gas cylinder manual valve, a gas cylinder pressure gauge, a discompressor, a discompressor valve, a discompressor pressure gauge, a metallic hose, a filter in front of a flow controller, the flow controller, a premixing cavity, a pressure sensor, a penetration front manual valve, a penetration flanged joint, an electromagnetic valve, a filter in front of an engine, a tee joint and a stainless steel canaliculus tubule. The gaseous-propellant supply device can propel gas which has single component in certain flow rate and pressure intensity, provides mixed gas propelling agent with certain mixing ratio, and has the advantages of stable work and accurate control of the flow rate.

The present invention provides a pressure alarm for use in conjunction with conventional pressure gauge unit systems, as a replacement pressure gauge and alarm, or as a pressure alarm system. The invention provides adaptable alarm feedback signals for an operator, preventing the unexpected loss of pressure when using a gas cylinder, pressure boiler, or other device. The invention provides an alarm that may be a visual, audible, electronic, or mechanical low-pressure alarm and may include a means of ordering replacement supplies or sending a warning message. A system controller and memory module prevents false alarms and eases the burden of the operator while allowing external input and control.

The invention discloses a reciprocating rock fracture friction-seepage characteristic test device and test method. The test device comprises an X-axis shearing system, a Y-axis stress loading system,a Z-axis stress loading system, a servo oil source system, a pore pressure loading system and a host. The X-axis shearing system comprises an X-axis EDC controller, an upper shearing box, a lower shearing box, an X-axis left hydraulic cylinder, an X-axis right hydraulic cylinder, an X-axis left pressing head, an X-axis right pressing head, an X-axis left pressure sensor, an X-axis right pressure sensor and an X-axis displacement sensor. The pore pressure loading system comprises a gas cylinder, a pressure gauge, a pressure reducing valve, a fluid inlet pipeline, a fluid outlet pipeline and a flow meter. By the adoption of the method, the friction coefficient and the stability parameters and permeability of the fracture surface in the slippage process can be measured efficiently and accurately, simultaneous measurement of the rock fracture friction characteristic and the fracture permeability evolution law is achieved, and the mechanical property and seepage (hydraulics) characteristicof rock fractures can be represented at the same time.

The invention discloses multi-information fusion display intelligent fire-fighting breathing mask glasses, and the glasses are characterized in that the glasses comprise a spectacle frame, an imagingmodule, and a battery module; the spectacle frame is installed on a breathing mask; the imaging module is disposed at one side, close to the eyes, of the top of the spectacle frame; the battery moduleis integrated at one side of the tail end of the spectacle frame; the spectacle frame is integrated with a circuit board processor and a control module. According to the invention, the glasses are installed in a fire-fighting breathing mask, and can be connected to display a pressure value of a respirator oxygen bottle, the gas concentration of a gas detector, the physical sign parameters of a vital sign bracelet and an image of a thermal imager. The glasses are compact in structure, are light in weight, are convenient for application and interaction, do not affect the normal sight line, liberate two hands of a firefighter indeed, and improves the rescue and self-protection capability of the firefighter.

The invention provides a control system for automatic start-stop of an engine. The control system comprises a start-stop control module, a start enabling switch, a stop enabling switch and an electronic control module. According to the control system provided by the invention, factors such as vehicle safety, emission, engine reliability and vehicle comfort level are sufficiently taken into consideration according to gas cylinder pressure parameters, storage battery electric quantity parameters, SCR urea box thawed state parameters, SCR catalyst upstream temperature parameters, air-condition state parameters and engine idle-speed heat dissipation time parameters, so that the problems such as potential safety hazards of a vehicle, engine service life attenuation and discharge efficiency decrease as a result of frequency start and stop are solved; and moreover, according to the control system, an automatic start function and an automatic stop function can coexist and also can individually exist.

The invention relates to a gas cylinder valve and a gas cylinder assembly. The gas cylinder valve comprises a valve body. A charging port and a gas cylinder port communicating with the inflation portand used for charging gas into a gas cylinder are formed in the valve body. A gas supply port and a gas supply channel enabling the gas supply port to communicate with the gas cylinder port are further formed in the valve body. A pressure reduction structure used for reducing the pressure of gas flowing out of the gas cylinder port is arranged on the gas supply channel. A gas supply one-way valveused for closing the gas supply channel when the pressure in the gas cylinder is lower than a set pressure value is further arranged on the gas supply channel and is located between the pressure reduction structure and the gas cylinder port. A gas supply one-way valve is arranged between the pressure reduction structure and the gas cylinder port. When the gas cylinder supplies gas to the outside,the one-way valve is closed if the pressure in the gas cylinder is lower than the set value for closing the gas supply one-way valve, so that gas in the gas cylinder is prevented from being completelydischarged, and the situation that the gas cylinder is damaged due to the fact that the pressure in the gas cylinder is low or even is negative is avoided.

The invention specifically relates to an ozone generator module based on diamond electrodes and a collecting method. An ozone generator comprises four cylindrical concentric shaft boron-doped diamond(BDD) film electrodes, an upward-displacement-of-air device and a downward-displacement-of-air device. The upward-displacement-of-air device and the downward-displacement-of-air device comprise gas collecting cylinders, pressure pumps, films with granular activated carbon, etc. Every four ozone generators constitute a module. The modules are connected through pipelines and surrounded by cuboid toughened glass. Industrial direct-current power supplies, water adding systems, working liquid inlets and waste liquid outlets are arranged outside the modules. When used for preparing ozone, the ozonegenerator module has the advantages of being easy to operate, easy and convenient to maintain, energy-saving, inexpensive, scientific and efficient.

The invention relates to the field of marine high-pressure gas cylinder pressure regulating equipment, in particular to a marine gas cylinder group fixing device and a structural deformation checkingmethod thereof. The fixing device comprises a fixing frame, and the fixing frame comprises an upper limiting frame, a lower limiting frame, a bottom frame, a vertical supporting rod, an inclined supporting rod, a cross-shaped supporting rod set and a transverse supporting rod; the upper limiting frame and the lower limiting frame are divided into a plurality of upper square frame units and a plurality of lower square frame units respectively, supporting plate units are fixed in the lower square frame units, and tightening plate units are fixed in the upper square frame units. Clamps are arranged on the upper bottle body and the lower bottle body of a gas cylinder; each clamp comprises a movable clamping plate and a fixed clamping plate. The structural deformation checking method comprisesthe steps: carrying out finite element calculation model modeling on the fixing frame and the clamps; applying loads and boundary conditions of the clamps and the fixing frame under the two conditions; gradually loading and solving the structures of the clamps and the fixing frame. According to the fixing device and the structural deformation checking method thereof, the whole fixing device savesthe occupied space, and the environmental requirements for the swing angle and the swing period can be met.

The invention relates to a multifunctional combined type gasbag device, and relates to a gasbag device. The multifunctional combined type gasbag device is provided with a gasbag device, a gasbag charging-discharging and pressure regulation device and a gas flow control device, wherein the gasbag device is provided with a gasbag, the two ends of the gasbag are both provided with metal rings, the metal rings are provided with gasbag charging interfaces, air supply interfaces (used for supplying air to a closed region) and suspension link interfaces; the air supply interfaces are communicated with a vent pipe which penetrates through the whole gasbag, and the gasbag charging-discharging and pressure regulation device is provided with a first gas cylinder, a first leather hose, a pressure control valve, a gasbag pressure indicating meter, a first gas cylinder pressure indicating meter, a first gas cylinder tee joint and an air outlet valve; and the gas flow control device is provided with a second gas cylinder, a second leather hose, a relief valve, a gas flow indicating meter, a second gas cylinder pressure indicating meter, a second gas cylinder tee joint and a gas flow regulating valve.

The invention relates to a buffering device of a polishing machine, in particular to an anti-collision buffering device of a wafer single-side polishing machine, belonging to the technical field of polishing machines. The buffering device is characterized in that an upper grinding disc rotating shaft integrated with a gas cylinder piston rod is connected with a vibration reducing transmission rod; a top stroke dead point and a bottom stroke dead point of the transmission rod are respectively provided with a damping oil cylinder which is internally provided with a reset pressure spring; and a hydraulic oil joint of each damping oil cylinder is connected on an oil storage device. In the buffering device, the structure is simple, the great gas cylinder pressure and the longer stroke can be born, the impact generated by a buffering gas cylinder at a top stroke dead point and a bottom stroke dead point reduces the impact power of a polishing head, the polishing quality of a semiconductor wafer is guaranteed, and the service life of the polishing machine is prolonged.

The invention belongs to the technical field of multiphase flow in primary subject power engineering and engineering thermophysics, and provides a system for simultaneously carrying out confining pressure and back pressure to realize high pressure in a micro-fluidic chip, the system comprises a liquid container, a plunger pump, a valve, a gas cylinder, a pressure gauge, an intermediate piston container, the micro-fluidic chip, a sapphire confining pressure chamber and a pipeline. According to the system disclosed by the invention, confining pressure and back pressure adjustment can be carriedout on the confining pressure chamber which is simple in process manufacturing only by one plunger pump, one middle piston container and one one-way valve; high pressure is truly achieved through simultaneous internal and external pressurization of the micro-fluidic chip, the system is simple and high in operability, potential safety hazards do not exist, and the cost of the system is greatly reduced while the confining pressure function and the backpressure function are achieved at the same time.

The invention relates to a big gas cylinder high pressure water testing device which belongs to the technical field of gas cylinders. The big gas cylinder high pressure water testing device comprises a water injection and gas exhaust device of the gas cylinder, a delivery device of the gas cylinder, a pressure pumping and water jacket injection and drain device of the gas cylinder and a drain device of the gas cylinder, wherein the water injection and gas exhaust device of the gas cylinder comprises a water injection pump set of the gas cylinder, a tilting mechanism assembly, a tilting driving hydraulic mechanism and a cylinder opening gas exhaust mechanism which are connected; the delivery device of the gas cylinder comprises a gas cylinder driving device assembly, a gas cylinder delivery device assembly, a rail and a driving control mechanism which are connected; the pressure pumping and water jacket injection and drain device of the gas cylinder comprises a water jacket assembly, a water jacket injection pump set, a water jacket drain air compressor set, a pressure pumping system high pressure pump set and a gas cylinder pressure pumping and water jacket injection and drain control mechanism which are connected; and the drain device of the gas cylinder comprises a gas cylinder drain air compressor set, a tilting mechanism assembly and a tilting control operation mechanism which are connected. The big gas cylinder high pressure water testing device has the advantages of simple structure, simple and convenient operation, high degree of automation, high reliability, and the like.

The invention discloses a movable on-site hydrogen production device for rapidly and self-thermally decomposing anhydrous hydrazine fuel into nitrogen-hydrogen mixed gas. The movable on-site hydrogenproduction device is suitable for providing a hydrogen source for a fuel cell or being used as a hydrogen source in field operation and metal processing. The device comprises a pressure gas cylinder,a pressure regulating valve, a fuel storage tank, an electromagnetic valve, a catalytic reactor, a catalyst bed layer, a quartz cotton fiber heat preservation layer, a hydrogen purification tank, a connecting pipeline and the like. According to the invention, the device can quickly and efficiently decompose anhydrous hydrazine fuel to generate hydrogen, the hydrogen is output within the second-level starting time of the device, the designed flow is stably output within 4-5 minutes, an external heat source is not needed, the system is simple and reliable, the concentration of hydrogen in the product is about 65%, the rest is nitrogen without battery catalyst poisons such as carbon monoxide and the like, the flow of the generated hydrogen can be conveniently adjusted between 29.4 L/min and 94.8 L/min (the standard state is 25 DEG C, 1atm), and the requirement for supplying hydrogen to a 1-5 kilowatt fuel cell and other hydrogen requirements for field operation are met.

The invention discloses a valve and a gas cylinder pressure container. The valve comprises a gas inlet, a gas outlet and a lock mechanism, wherein the gas inlet communicates with an external gas source; the gas outlet communicates with an external gas storage container, the gas outlet communicates with the gas inlet through a gas passing channel, a valve element capable of moving along the gas passing channel is arranged in the gas passing channel, and a matching mechanism is arranged on the valve element; the lock mechanism can form position interference on the matching mechanism under external power; when the lock mechanism does not form position interference on the matching mechanism, gas pressure in the gas source can push the valve element, so that the bottom of the valve element presses the gas outlet; and when the lock mechanism forms position interference on the matching mechanism, the bottom of the valve element is separated from the gas outlet. The valve and the gas cylinderpressure container have the beneficial effect that on-off of gas inflation can be effectively controlled.

The invention relates to engine control technologies, in particular to an electronic control system and a control method for a diesel and natural gas hybrid dual-fuel engine. The electronic control system comprises CNG (compressed natural gas) cylinders, gas cylinder pressure gauges, a regulating valve, a natural gas heater, a high-pressure stop valve, a pressure reducing valve, a linear load valve, a stepper motor valve, an air inlet, a mixer, the engine, a fuel capacity limiting electromagnetic valve, a gas inlet pressure sensor, a gas inlet temperature sensor, an engine rotation speed sensor and an electronic control unit. The electronic control system and the control method have the advantages that the natural gas capacity and the ignition fuel capacity can be flexibly controlled by the electronic control system for the dual-fuel engine, and the dual-fuel engine has good emission indexes and can work by the aid of pure diesel during starting and idling; instructions can be emitted by the control system for the engine when the rotation speed of the engine is higher than a certain set value, so that the engine can be automatically switched to work in a dual-fuel working mode.

The invention discloses a constant volume transformation method test system for gas transmittance. The system comprises a computer, a data acquisition module, a vacuum pump, a gas cylinder, a pressuretransmitter, an upstream gas storage tank, a downstream gas storage tank, a membrane pool assembly and a pressure sensor, the inlets of the upstream gas storage tank and the downstream air storage tank are respectively provided with a pressure sensor, an upstream vacuumizing valve, a tee joint and a downstream vacuumizing valve are sequentially arranged on a pipeline between the upstream gas storage tank and the downstream gas storage tank, the third end of the tee joint is connected with the vacuum pump, the membrane pool assembly is connected to the pipeline between the upstream gas storagetank and the downstream gas storage tank in parallel, the pressure transmitter, the pressure sensor and the temperature control box are connected with the data acquisition module, and the data acquisition module and the vacuum pump are electrically connected with the computer. The number of valves is reduced, the operation is simple and convenient, the gas leakage rate and error of the test system are greatly reduced, organic glass and aluminum profiles are used as a frame, the weight and size of equipment are reduced, and the cost is reduced.

The invention relates to a fusion control method and system for a hydrogen adding machine. The method comprises the steps that S1, the hydrogen filling temperature, the environment temperature, the current pressure of a gas cylinder and the current temperature of hydrogen in the gas cylinder are obtained; s2, if the single board computer does not have the fault, executing the step S3, otherwise, executing the step S5; s3, the single-board computer calculates and obtains a time-in-gas-cylinder hydrogen temperature simulation change curve in the simulation filling process with different hydrogen filling mass flow rates based on a gas cylinder hydrogen temperature simulation calculation formula; s4, the maximum hydrogen filling mass flow rate is selected according to all the curves to obtain hydrogen filling rising rate control information, the hydrogen filling rising rate control information is sent to the PLC, and the step S6 is executed; s5, the PLC searches and obtains hydrogen filling rising rate control information according to the preset control parameter table, and the step S6 is executed; s6, the PLC controls the hydrogenation rate of the hydrogenation machine according to the hydrogen filling rising rate control information; and S7, the steps S1-S6 are repeated until the pressure of the gas cylinder reaches the target pressure value. And high efficiency, safety, stability and intelligence of the hydrogenation process can be considered.

The invention discloses a thermal vibration combined test method for a high-temperature-resistant polyimide composite gas cylinder, which comprises the following steps: fitting a working pressure curve of the gas cylinder according to a time axis based on the use environment temperature of the gas cylinder to obtain a data curve corresponding to the environment temperature and the pressure of the gas cylinder, and selecting at least three coordinate points (X, Y) on the curve, secondly, converting thermal vibration test conditions into test piece gas high-temperature state design points, and testing the coordinate points (X1, Y) of the internal gas temperature of the empty bottle corresponding to the three coordinate points in the first step through an external heating test of the empty bottle; substituting (X1, Y) into the non-ideal gas state equation, and obtaining the pressure value Y1 at the normal temperature; and introducing gas at room temperature to reach (X0, Y1), controlling the environment temperature to reach X, controlling the internal temperature of the gas cylinder to reach X1, and starting a vibration test. The invention provides a test design scheme which is easier to operate and higher in reliability, and can be widely applied to formulation of thermal vibration combined test schemes of high-temperature-resistant pressure containers such as missile weapons and records.

The invention relates to a high-pressure gas storage device integrating pressure control and monitoring. The high-pressure gas storage device comprises a gas cylinder, a gas cylinder stop valve, a pressure reducing valve, a gas cylinder pressure sensor and an inflation wrench, wherein the gas cylinder stop valve is provided with four connecting ports which are correspondingly connected with the gas cylinder, the gas cylinder pressure sensor, the pressure reducing valve and an inflation gas source, the gas cylinder pressure sensor is connected with the gas cylinder, the gas cylinder stop valveis connected with the pressure reducing valve through a transition pipeline, the gas cylinder stop valve comprises a stop valve and an inflation valve, the stop valve is used for controlling high-pressure gas in the gas cylinder to be output into the pressure reducing valve, the pressure reducing valve is used for outputting gas which is constant in a set pressure range, the inflation valve is connected with the gas cylinder and used for controlling the inflation gas source to inflate the gas cylinder, the inflation wrench is used for opening the inflation valve, and the inflation speed is controlled by controlling the opening degree of the inflation valve. According to the high-pressure gas storage device, the inflation speed can be controlled by opening the inflation valve of the gas cylinder stop valve through the inflation wrench without detaching the pressure reducing valve and a pressure monitoring device, and the pressure change in the gas cylinder can be monitored in real time.

A gas cylinder is provided with a pressure regulator including a valve body including an upper first chamber, intermediate second and third chambers, a lower channel threadedly secured to and communicating with a container body, a passageway having one end communicating with the container body, a lower through hole communicating with the intermediate third chamber and the channel, and an internally threaded top neck; a high-pressure safety valve; a low-pressure safety valve; a coupler on the valve body; a moveable member on a bottom of the intermediate third chamber; a spring biased hollow member in the intermediate second chamber and having a bottom engaged the moveable member; an externally threaded stem in the upper first chamber and complimentarily disposed on the hollow member; a hollow cap threadedly secured to the stem and the neck respectively; and a knob mounted on the stem.