67results about How to "Play the role of pressure relief" patented technology

The invention belongs to the field of building and relates to a wall surface and shed surface coating, screeding and polishing device, in particular to a module assembly-type wall surface and shed surface coating, screeding and polishing device. The module assembly-type wall surface and shed surface coating, screeding and polishing device aims to solve the problems that an existing wall wiping device cannot conduct coating, floating, polishing and dust collecting at the same time on a wall surface and a shed surface, operation is complex and inflexible, and the work intensity of operators is enhanced. A transversely-moving sliding rail unit is composed of two second rails arranged in parallel side by side and is installed on the upper face of a fixed sliding rail unit. A traveling lifting bracket mechanism is installed on the transversely-moving sliding rail unit. A splashing-type coating and screeding mechanism and a polishing and dust collecting mechanism are installed on the traveling lifting bracket mechanism in an alternate mode and can be connected with a material supplying and dust collecting mechanism in an alternate mode. The lower surface of a first rail of the fixed sliding rail unit is provided with a plurality of supporting uprights provided with adjusting supporting feet at the bottoms.

The invention belongs to the technical field of vehicles and discloses a closed type circular breathing system and an automobile. The closed type circular breathing system comprises an engine, an oil-gas separator, a supercharger and a one-way valve; one end of the oil-gas separator communicates with a crankcase of the engine; the other end of the oil-gas separator communicates with an air inlet pipeline through an air outlet pipeline; the air inlet pipeline communicates with the supercharger; the supercharger communicates with the engine; the inlet end of a bypass pipeline communicates with the air outlet pipeline; the outlet end of the bypass pipeline communicates with the supercharger and the engine correspondingly; and the one-way valve is arranged on the bypass pipeline, and is configured to be selectively opened, so that gas separated by the oil-gas separator can return to the engine through the bypass pipeline for pressure relief of the crankcase. The closed type circular breathing system is simple and reliable in structure, the risk of engine damage caused by sudden increase of engine pressure is reduced, effective protection of the engine is realized, and the service lifeof the engine is prolonged.

The invention relates to a reactor capable of self-balancing the pressures inside and outside a lining pipe, and applications thereof, wherein the reactor comprises a pressure bearing shell, an inertliner, a liner inlet sealing ring, a liner outlet sealing ring, a pressure balance valve and a self-protection pressure relief valve. According to the present invention, the pressure bearing shell bears the high pressure, the liner is made of the inert material so as not to participate in the reaction, sealing is formed between the inlet and the pressure bearing shell and between the outlet and the pressure bearing shell so as to protect the pressure bearing shell from being corroded by reactants and prevent the interference of the shell material on the reaction result, and the pressure balance valve and the self-protection pressure relief valve ensure the balance of the pressures inside and outside the liner during the pressure increasing and pressure decreasing process so as to avoid theliner breaking caused by pressure difference, and can provide the effect of the safety valve in the case of the too high pressure of the current end or the clogging of the outlet; and the reactor canbe used at the temperature of room temperature to 800 DEG C under the pressure of 0 pa to 1313 Mpa, and has advantages of simple production, low cost, convenient installation and use, reliable data,corrosion resistance, high safety and the like.

The invention discloses a water draining and pressure relieving structure capable of realizing anti-floating. The water draining and pressure relieving structure capable of realizing anti-floating comprises a well wall pipe and a slow expansion type hydro-expansive antipriming pipe. The slow expansion type hydro-expansive antipriming pipe is arranged outside the well wall pipe in a sleeving manner. A micro-expansionary fine aggregate concrete layer is arranged between the slow expansion type hydro-expansive antipriming pipe and the well wall pipe. The outer diameter of the slow expansion typehydro-expansive antipriming pipe corresponds to the inner diameter of a water draining hole in which the slow expansion type hydro-expansive antipriming pipe is located. The structure has the advantages that when water leaks out of the well wall pipe, both the slow expansion type hydro-expansive antipriming pipe and the micro-expansionary fine aggregate concrete layer expand, and at the moment, the gap between the slow expansion type hydro-expansive antipriming pipe and the inner side wall of the water draining hole decreases, so that the corrosion to a floor layer due to the outflow, from theexterior of a well wall to the floor layer, of the water under the floor layer can be effectively prevented, the strength of the floor layer is lowered and the function of anti-floating is realized;the water under the floor layer is drained out through the well wall pipe, so that the buoyancy which is applied to the floor layer by the water is reduced and the function of pressure relieving is realized.

The invention provides a combined sampling valve with simple structure and low cost, comprising a valve body, a pressure gauge and a valve rod, wherein the valve rod is provided with an inlet, an outlet and a sampling hole. The inlet and the outlet are communicated by a liquid passage arranged in the valve body, the sampling hole is communicated with the middle part of the liquid passage by a sampling passage arranged in the valve body, the valve rod is removably arranged on the valve body, one end of the valve rod extends to the sampling passage, wherein the valve rod is configured in a manner that the sampling passage is open and the liquid passage is ultimately closed when the valve rod shifts towards the liquid passage as well as that the liquid passage is open and the sampling passage is ultimately closed when the valve rod shifts far from the liquid passage, and the other end of the valve rod is arranged outside the valve rod and the pressure gauge is arranged on the outlet. The invention is used on a pressure fluid transportation pipeline.

An oil well pump of an underground linear motion actuator is designed for solving the technical problems that as the structure of the existing linear oil well pumps are unreasonable, thus causing a mover to be deadlocked, a stator to be scrapped, a magnet to be eroded and the service life to be short, and the like, and the oil well pump of the underground linear motion actuator comprises two large parts: an oil well pump and a linear motor, wherein, the single-level armatures of the linear motion actuator are connected with each other by threads with a spigot in a spoke-work way and are located to seal with the end surface by the spigot; a phase-change connection wire is adopted between each section of the windings; the air gap of the linear motor is sealed by a small clearance; the magnetic pole of the mover is a radical magnetic circuit pole; an air expander is arranged in an outer shell of the linear motor. The linear motion actuator is connected with the oil well pump by a screen pipe; a special pump is designed on the upper end of the pump barrel, which changes a traditional oil circuit; a plunger piston and a push rod use solid cores in a pump barrel. The oil well pump of the underground linear motion actuator has the characteristics and beneficial effects of reasonable structure, saving energy and no polluting the environment, which is suitable for the use of directional wells; the parameter can be adjusted at any time according to the changes of different well liquid.

The invention discloses a device and a method for grouting and reinforcing a secondary casing pipe for a coal seam floor. The device comprises a flange pipe connected with a gate valve and a grouting flange pipe, wherein the flange pipe connected with the gate valve is arranged at the upper part of the grouting flange pipe; the flange pipe connected with the gate valve comprises a flange plate, a hard pipe with threads fixedly connected to the upper end of the flange plate and a casing pipe with threads fixedly connected to the lower end of the flange plate; the grouting flange pipe comprises a flange plate, a casing pipe with threads fixedly connected to the lower end of the flange plate and a grouting hose connection pipe fixedly connected to one side of the casing pipe with threads; the flange plate of the flange pipe connected with the gate valve and the flange plate of the grouting flange pipe are connected with each other through bolts; the hard pipe with threads at the upper end of the flange pipe connected with the gate valve is connected to a choke plug gate valve. The method is characterized by grouting and reinforcing the secondary casing pipe by using the device; the device and the method can be used for effectively reinforcing a gap between an outer casing pipe layer and an inner casing pipe layer; the problems that grout and water are leaked when the grout is injected into the drilled surface and the casing pipe is released in the later period can be solved; the device is convenient to demount after being used and can be repeatedly used.

The invention discloses a high-pressure gas filling valve, which comprises an inflatable seat body, a through hole, a valve cavity, an inflatable nozzle, an inflatable valve, a retaining ring and a first sealing ring. There is a through hole under the mouth, a valve cavity under the through hole, a retaining ring under the valve cavity, an inflation valve and a first sealing ring inside the valve cavity; one end of the inflation valve is an inflation thimble, and the other end is an inflation valve core ; The first sealing ring is set on the inflation thimble, and the inflation hole runs through from the top of the inflation thimble to the bottom and communicates with the valve chamber. A gas cracker includes an expansion tube and a gas-filled ignition head. The filling valve of the present invention has simple structure, easy processing of structural components, low manufacturing cost, and no air leakage; the gas cracker has simple structure, easy processing of structural components, low manufacturing cost, no air leakage, safe transportation, and no squibs Hidden danger, large expansion force.

The invention provides a direct refrigeration air conditioner system and relates to the technical field of air conditioner systems. The direct refrigeration air conditioner system comprises a pressurevessel, a water storage container and an air compression device. The air compression device is connected with the pressure vessel through a first connecting pipeline, and a first valve body is arranged on the first connecting pipeline. The pressure vessel is connected with a room of a user through a second connecting pipeline, and a second valve body is arranged on the second connecting pipeline.The pressure vessel is arranged in the water storage container. When inflating, the first valve body is opened, the second valve body is closed, outside air is pressed into the pressure vessel through the air compression device, the air pressure increases to raise the temperature, and heat is transferred to water in the water storage container; and during deflation, the first valve body is closed, the second valve body is opened, air is exhausted from the pressure vessel, the temperature of the air is reduced due to pressure reduction, and low-temperature air is delivered to the room of the user. The method has the beneficial effects that refrigeration efficiency is high, and the cost is low.

The invention discloses a pump-free sampler which comprises a sampler main body, a uniform mixing box is arranged in the sampler main body, an electric control valve is arranged at the bottom end of the uniform mixing box and penetrates through the bottom end of the uniform mixing box, a bottom support is arranged at the bottom end in the sampler main body, and a plurality of water collecting bottles are vertically arranged on the surface of the bottom support; an overflow box is arranged on the side face of the interior of the sampler body, a metering cup is arranged in the overflow box, the metering cup and the electric control valve are located on the same vertical plane, an external control pump and a relay are arranged at the top end of the exterior of the sampler body, and the external control pump is electrically connected with the relay; and an external control pump is controlled by a relay to pump a water source from the outside to a metering cup in the overflow box, and then the water source is controlled by an electric control valve to flow into the mixing box.

The invention discloses a none-motile pressure relieving plate with a drainage function for a nuclear power unit. The pressure relieving plate comprises a frame, door planks, water releasing assemblies and fusible bolts; the door planks are provided with shearing bolt assemblies, the frame is provided with a bolt fixing seat, and shearing bolts in the shearing bolt assemblies are inserted into the bolt fixing seat; the water releasing assemblies are arranged on the inner side faces of the door planks, and each water releasing assembly comprises a blade shaft, a floating ball, a floating ball rod and a transmission gear set; and the two ends of the blade shafts are in transmission connection with the two sides of water releasing frames, the blade shafts are provided with blades, the planks are provided with water releasing channels corresponding to the blades, the floating balls are connected with the floating ball rods, the floating ball rods are furthermore in transmission connection with the blade shafts through transmission gear sets, the floating balls move up and down to drive the floating ball rods to poke the transmission gear sets to rotate the blade shafts, the blade shafts are rotated to make the blades open or close the water releasing channels on the door planks, and the water releasing frames are provided with the fusible bolts. The pressure relieving plate has the pressure relieving function and also has the water releasing and fire prevention functions.

The invention discloses an anti-flying head supercritical oxygen gas cracker, which comprises an expansion tube and an inflatable ignition head. One end of the expansion tube is shrunk and sealed, and the other end is shrunk with an inflatable igniter; Fix the expansion tube, then rotate the expansion tube and heat the end of the expansion tube through the clamp, heat the end of the expansion tube to near or reach the plastic deformation, and after the front part of the shrinking mold touches the end of the expansion tube, the end of the expansion tube is from The shrinking mold moves from the front to the tail, and the shrinking mold extrudes and thickens the end of the expansion tube, and then uses a through-hole knife to make a through hole at the end of the expansion tube to fix the aperture; the other end is extruded and thickened, Through-hole fixed hole diameter, or sealing and thickening molding. The expansion tube is made into a pressure vessel by shrinking. The utility model has the advantages of simple structure, easy processing of structural components, low manufacturing cost, no flying head, no air leakage, safe transportation, no hidden danger of squib, and large expansion force.

The invention discloses a gas expansion device and a necking processing method and application of an expansion tube. The expansion device includes an expansion tube and an inflatable ignition head. The method is to fix the expansion tube through the clamp first, then rotate the expansion tube and heat the end of the expansion tube through the clamp, heat the end of the expansion tube until it is close to or reach plastic deformation, and after the front part of the shrinking mold touches the end of the expansion tube, The end of the expansion pipe moves from the front to the rear of the shrinking die, and the shrinking die extrudes and thickens the end of the expansion pipe, and the end of the shrinking end is thickened axially outward, and then the end of the expansion pipe is processed with a through-hole knife. Through-hole fixed aperture. The expansion tube is made into a pressure vessel by shrinking. The utility model has the advantages of simple structure, easy processing of structural components, low manufacturing cost, no flying head, no air leakage, safe transportation, no hidden danger of squib, and large expansion force.

The invention provides a multi-chamber magnesium-aluminum alloy parking air reservoir. The multi-chamber magnesium-aluminum alloy parking air reservoir comprises a rotating motor; the rotating motor is obliquely arranged; an output end of the rotating motor is equipped with a bottom plate; an inner positioning seat and an outer positioning tube are installed at the center of the surface of the bottom plate; the inner top of a reservoir body is equipped with a setting mechanism; the setting mechanism is slidably attached to the top surface of a partition cover; the setting mechanism is used forcompressing the partition cover at the top; the setting mechanism is assembled at the center of the inner wall of a transparent seal cover; and the top surface of the transparent seal cover is fixedly connected with a pneumatic rod. According to the multi-chamber magnesium-aluminum alloy parking air reservoir provided by the invention, the placement stability of the reservoir body can be ensuredthrough the inner positioning seat and the outer positioning tube, the offset of the reservoir body during welding is avoided, and the welding precision is improved; and the inner positioning seat canstop and limit the partition cover, so that the installation of the partition cover is simpler and more convenient, and the installation position is more accurate.

The invention provides a multi-layer oil-gas separating device for an automobile engine. The purposes being high in separating efficiency, good in filtering effect and multiple in separating layers are achieved. The multi-layer oil-gas separating device for the automobile engine comprises a cover body, and the cover body comprises a chassis and an upper cover (2) which are detachably connected. The multi-layer oil-gas separating device for the automobile engine is characterized in that the chassis (1) is provided with a first air inlet (3), a first channel (4) is arranged on the portion, corresponding to the first air inlet, of the upper cover (2), and a second channel (5) is arranged on the side face of the first channel (4); the chassis (1) is provided with a first partition plate (9), the cover body is provided with a lower channel (6) and an upper channel (7), the lower channel (6) is located under the first partition plate (9), and the upper channel (7) is located over the first partition plate; and a first column ring (8) is fixedly arranged on the chassis (1).

The invention discloses a pressure-controllable herringbone corrugated plate shell type heat exchanger stress strain test system. The system comprises an industrial control computer, a data acquisition system, a control system and a water supply system, wherein the water supply system comprises a plunger pump driven by a motor, a first water rank, a filter, an adjusting valve and a second pressure gauge, a pipeline between the second pressure gauge and a first solenoid valve is connected in a by-pass mode with a pressure release path sequentially connected with a second solenoid valve and a second water tank, the data acquisition system comprises a data acquisition module connected with the industrial control computer, and a strain gauge and a pressure sensor connected with the data acquisition module, and a strain gauge, and the control system comprises a control module connected with the industrial control computer, and a frequency converter, the first solenoid valve and the second solenoid valve in circuit connection with the control module. The system is advantaged in that the structure is simple, the system is convenient to use, the system can be widely applied to measurement on stress, strain and pressure under high voltage or super high voltage states, and the automatic system can guarantee safety of an operator.

The invention discloses a supercritical oxygen fracturing device which comprises an expansion pipe and a gas-inflated ignition head. A necking port in one end of the expansion pipe is sealed, and a necking port in the other end of the expansion pipe is provided with the gas-inflated ignition head. A necking port machining method comprises the steps that the expansion pipe is fixed through a clamp, the clamp is used for rotating the expansion pipe and heating one end of the expansion pipe, the end of the expansion pipe is heated till being approximate to or reaching plastic deformation, the front portion of a necking mold makes contact with the end of the expansion pipe, the end of the expansion pipe moves from the front portion to the tail of the necking mold, the necking mold carries out extrusion thickening molding on the end of the expansion pipe, a through hole knife is used for forming a through hole in the end of the expansion pipe and fixing the hole diameter, the steps are repeated to carry out extrusion thickening molding on the other end of the expansion pipe, a through hole is formed, and the hole diameter is fixed, or sealing thickening molding is carried out. A pressure container is prepared from the expansion pipe through the necking port machining method. The supercritical oxygen fracturing device has the advantages that the structure is simple, the structural components are easy to machine, the manufacturing cost is low, head flying and gas leakage are avoided, conveying is safe, no dud hidden danger exists, and expansion force is large.