65results about How to "To achieve the purpose of pressure relief" patented technology

The invention discloses a vibration diaphragm in a MEMS microphone, and the MEMS microphone. The vibration diaphragm comprises a vibration diaphragm body and at least one pressure relief device; the at least one pressure relief device is on the vibration diaphragm body and formed by gaps; the gaps include at least two sections of circular arc-shaped gaps, which are continued together in sequence, wherein the whole of the adjacent two sections of circular arc-shaped gaps is S-shaped, and is centrosymmetric corresponding to a connection position; the pressure relief device comprises at least two valve clacks and neck parts; the at least two valve clacks are formed by at least two sections of adjacent circular arc-shaped gaps; and the neck parts are connected to the valve clacks and the vibration diaphragm body and shaped as constraint structures. When the vibration diaphragm disclosed by the invention is subjected to relatively high sound pressure due to mechanical shock, blowing, falling and the like, the at least two structure symmetrical valve clacks can upwarp upwardly or downwardly by taking respective neck parts as pivots; therefore, a effective pressure relief path is formed; and thus, the pressure relief purpose is achieved.

The invention discloses a mobile hot smoldering slag treatment line comprising a plurality of hot smoldering slag tanks on a working station of a factory building, wherein each hot smoldering slag tank is communicated with a steam diffusing chimney by virtue of a steam pipeline; two steel rails are arranged on two sides of the plurality of hot smoldering slag tanks; a hot smoldering slag cover mobile trolley with a transmission device is arranged on each steel rail; a car frame of the hot smoldering slag cover mobile trolley is connected with a hot smoldering slag cover by virtue of a lifting device; an explosion-discharging device and a water spraying device are arranged on the hot smoldering slag cover. The hot smoldering slag cover mobile trolley is used as a carrier of the hot smoldering slag cover so as to achieve rapid and flexible switching of the hot smoldering slag cover among a plurality of hot smoldering treatment stations and waiting stations and meet the requirements of production processes.

The invention discloses a novel load retaining valve structure for an excavator. The novel load retaining valve structure comprises a valve body and cavities formed in the valve body. The cavities comprise the first cavity and the second cavity disposed on the right side of the first cavity and communicated with the first cavity. A tapered valve element is arranged on the left side of the first cavity, and an ejecting column is arranged at the right end of the tapered valve element horizontally. A valve sleeve is arranged on the right side of the tapered valve element, a through cavity is formed in the horizontal central axis of the valve sleeve, and the ejecting column is located in the through cavity in a penetrating mode. A plunger is movably arranged in the second cavity, and the area of the cross section of the plunger is larger than that of the cross section of the ejecting column. According to the novel load retaining valve structure for the excavator, an existing load retaining valve structure is changed so that the leakage amount can be controlled within 2ml / min, the settling volume of a movable arm can be effectively prevented from being too large, and the stability and the safety of the excavator are improved.

The invention provides a static balance valve and belongs to the technical field of valves, and the static balance valve is used for solving the problem that the handwheel of an existing static balance valve is hard to rotate, a valve core structure is complicated and the like. The static balance valve comprises a valve body the interior of which is provided with a hollow cavity, wherein the left and right sides of the valve body are respectively provided with a water inlet and a water outlet, a valve core is positioned in the valve body, and the inner end of a valve rod is connected with the valve core; the outer end of the valve rod stretches out of the valve body so as to be connected with a handwheel, the valve rod is provided with a press plate, and the valve core comprises a large valve core and a small valve core; the small valve core is fixedly connected with the inner end of the valve rod and is positioned in the large valve core, and the outer side face of the small valve core is tightly adhered to the inner side face of the large valve core; and the valve body is internally provided with a restoring spring, one end of the restoring spring props against the bottom of the valve body, and the other end of the restoring spring props against the large valve core. The static balance valve provided by the invention has the advantages that the operation is labor-saving, the problem that a large caliber valve has a small opening so as to surge is solved, and the like.

The invention belongs to the technical field of food production equipment, and relates to a safe pressure steam sterilization pot high in residual heat utilization rate. The safe pressure steam sterilization pot comprises a sterilizing chamber and a steam generating chamber, wherein the sterilizing chamber and the steam generating chamber are separated by a partition board; steam enters the sterilizing chamber through through holes to perform sterilization on substances in the sterilizing chamber, so that the situation that the steam is in direct contact with the substances, and the substancesare damaged is avoided; a PLC control device is high in visual degree, and convenient to operate and observe, so that the safety performance is improved; a steam residual heat recovering device is arranged, so that after sterilization is completed, redundant steam can be pumped by a steam drawing device, after heat exchange is performed, the steam converts to liquid, then the liquid is returned to the steam generating chamber again, cyclic utilization is performed, cost is greatly saved, the recovered heat quantity can also be used for other foods which need heating or drying, the utilizationrate of residual heat is increased, and the effect of energy saving is achieved; the purpose of releasing pressure can also be achieved, and the situation that the redundant steam is directly exhausted by a pressure releasing valve, so that energy sources are wasted is avoided; and sliding rails are arranged, so that the sterilizing chamber is convenient to draw out, and articles are convenient to place and take out.

The invention discloses an air pressure valve, which comprises: a tubular body; an elastic plug body made of elastic material, the edge of the elastic plug body is completely against the pipe wall of the tubular body, and the elastic plug body further includes a The slits are perforated on the elastic plug body. When the gas flows to the elastic plug body through the tubular body, when the impact pressure is greater than the resistance of the slit of the elastic plug body, holes can be formed along the intersection of the slits, so that the fluid can pass through the elastic plug body to achieve pressure relief the goal of.

The invention relates to a slender-rod pressure release valve. A valve body is a cylinder; an upper valve cover is hermetically arranged on the top of the valve body; a bottom cover is hermetically arranged on the bottom of the valve body; the upper valve cover, the valve body and the bottom cover form a sealed cylindrical cavity; a valve element is assembled in the cylindrical cavity and can move up and down; the lower end of a valve rod is connected with the valve element, and the upper end of the valve rod passes through a central through hole of the upper valve cover; the top of the valve rod is connected with the lower end of a slender rod vertically arranged; the upper end of the slender rod is connected with a support rack; the support rack is fixedly connected with the upper valve cover; the bottom cover is provided with a medium high-pressure input passage; inner port of the medium high-pressure input passage is opposite to the bottom of the valve element; the valve body is provided with a medium low-pressure output passage; an inner port of the medium low-pressure output passage is positioned in an inner wall of the valve body; when the valve element is kept static, the inner port of the medium low-pressure output passage is plugged by the valve element; when the valve element moves upward, the inner port of the medium low-pressure output passage is opened. The slender-rod pressure release valve is wide in application range and high in adjustment precision.

The invention discloses a purlin-free explosion-venting wall for a cleaning chamber. The purlin-free explosion-venting wall comprises a rock wool sandwiched explosion-venting board, explosion-venting bolts, traction nooses, keels, an original structural pillar and a cleaning board used for covering the original structural pillar, the keels and the traction nooses, the rock wool sandwiched explosion-venting board is connected with the keels through the explosion-venting bolts, the keels are fixed to the original structural pillar, one end of each traction noose is connected with the rock wool sandwiched explosion-venting board through a hexagon bolt and a nut, the other end of each traction noose is connected with the corresponding keel through the hexagon bolt and the nut, the cleaning board is constituted through installation of multiple plates, and is in contact with the rock wool sandwiched explosion-venting board in a fitting mode with the assistance of a circular bead instead of being connected with the rock wool sandwiched explosion-venting board to form a closed cavity, and the original structural pillar, the keels and the traction nooses are located in the closed cavity. According to the purlin-free explosion-venting wall for the cleaning chamber, the requirement for the cleanliness can be met, it can also be guaranteed that during explosion, the pressure is released outwards timely, and the safety performance is good.

The invention relates to a gas-insulated switchboard body and a box-type substation. According to the invention, a box body of the box-type substation or the gas-insulated switchboard body is provided with a pressure relief opening, the pressure relief opening is blocked by a pressure relief door which is hinged on the box body or the gas-insulated switchboard body, the pressure relief door is stopped through a stop member when the pressure in the box body or the gas-insulated switchboard body is lower than a set value so as to enable the box body and the gas-insulated switchboard body to be normally used, when an electrical component in the box body or the gas-insulated switchboard body generates a high-temperature high-pressure gas because of an arcing fault, the high-temperature high-pressure gas can impact the pressure relief door so as to enable the pressure relief door to be elastically deformed, the pressure relief door can slide over the stop member after being deformed so as to open the pressure relief opening to discharge the gas in the box body or the gas-insulated switchboard body and achieve a purpose of pressure relief, damages imposed on other electrical components by the high-temperature high-pressure gas are avoided, explosion of the box body or the gas-insulated switchboard body when the internal pressure is high enough is also avoided, and the safety performance is improved.

The inventive device comprises an outer cylinder, a magnetic flowing liquid in the cylinder, a diaphragm, a magnet coil wound on the cylinder, top and bottom joints, a current driver, a controller and a pressure sensor. The diaphragm is above the bottom joint. The joint of the magnet coil is connected with the power supply of the current driver and the current driver is connected with the controller. The bottom joint is connected with a vessel and the top joint is connected with an emptying pipe. The pressure sensor is mounted in the vessel for testing the pressure in the vessel and sending the pressure signal into the controller. According to the contrast signal of the tested pressure with the design pressure-limiting value, the controller is used for controlling the power supply and the power-off of the magnet coil.

The present invention provides a secondary battery top cover assembly and a secondary battery, the secondary battery top cover assembly comprising a cover plate provided with an explosion-proof hole;a first abutting part which is arranged on the inner wall of the explosion-proof hole in a protruding mode and is arranged in the circumferential direction of the explosion-proof hole; an anti-explosion piece which abuts against the first abutting part and seals the anti-explosion hole and is made of plastic; and a fastener which abuts against the edge of the explosion-proof sheet, wherein a through hole is formed in the fastener, and the explosion-proof sheet is exposed out of the through hole. The metal material of the existing metal explosion-proof sheet is replaced by the plastic explosion-proof sheet, and the explosion-proof sheet is fixed on the cover plate of the top cover through the fastener with the through hole, so that the explosion-proof sheet is exposed in the through hole, and when the internal air pressure of the battery reaches a certain value, the explosion-proof sheet is separated from the edge, and the purpose of pressure relief is achieved; and the problem of fluctuation of the opening pressure of the explosion-proof sheet caused by welding is avoided, and the safety performance of the secondary battery is improved.

The invention relates to the technical field of valves, and particularly discloses an adjustable constant-pressure safe exhaust valve. The adjustable constant-pressure safe exhaust valve comprises anexhaust assembly and a valve cap connected with the exhaust assembly; a stepped hole is formed in the exhaust assembly, the two ends of the stepped hole extend to the two end surfaces of the exhaust assembly correspondingly, the small end of the stepped hole is an air inlet hole, the large end of the stepped hole is an inner hole communicating with the outside, a shoulder portion is formed at thejoint between the air inlet hole and the inner hole, a valve plug capable of abutting against the shoulder portion of the stepped hole and plugging the air inlet hole is arranged in the inner hole, anexhaust groove is formed in the side wall of the inner hole, the length of the exhaust groove in the axial direction of the inner hole is larger than the height of the valve plug, and a spring whichwith two ends abutted against the valve plug and the valve cap correspondingly is arranged in the inner hole. According to the valve, the rapid pressure reduction can be achieved under the condition that the pressure is suddenly increased, so that the phenomenon that the phenomenon of tire burst caused by the fact that the pressure intensity inside a tire is rapidly increased is avoided.

The invention discloses a sewage pipe. The sewage pipe comprises an outer pipe and an inner pipe, a main cavity is formed in the middle of the outer pipe, the inner pipe is arranged in the main cavity, one side of an input end of the inner pipe is in sealed assembling with the outer pipe, the sewage input pipe is sealed and inserted into a sewage discharging pipeline of the inner pipe, the middleof the inner pipe is broken to allow one or more springs to be mutually connected to seal the whole sewage discharging pipeline, and an auxiliary discharging pipeline is formed between the outer wallof the inner pipe and the inner wall of the outer pipe. The sewage pipe has the advantages that the blocking resistance is excellent, larger particles in sewage can be effectively destructed and finedto prevent the blockage of the pipeline, and the stability when sewage discharging is conducted is improved.

The invention discloses a pressure relieving pipeline which comprises a pipeline body, wherein a first connecting pipe is fixedly connected to the side wall of the pipeline body; the first connectingpipe communicates to the inner cavity of the pipeline body; a first fixed block is fixedly connected to the side wall of the first connecting pipe; a second connecting pipe is arranged on the upper side of the first connecting pipe; a second fixed block is fixedly connected to the side wall at the lower end of the second connecting pipe; the second fixed block leans against the first fixed block;the second fixed block and the first fixed block are fixedly connected through a bolt; two sliding chutes are symmetrically formed in the inner wall of the second fixed block; slide blocks are slidably connected in the two sliding chutes; and a baffle plate is fixedly and jointly connected to the two slide blocks. The pressure relieving pipeline disclosed by the invention is simple and reasonablein structure, and can unload effectively to reduce the dynamic load acted to the inner wall of the pipe, so that the service life of the pipeline is prolonged favorably. Meanwhile, the pressure relieving pipeline is provided with an alarm device, so that the alarm device can raise the alarm when the change of pressure is relatively great.

The invention discloses a fusible-alloy pressure relief device for high pressure gas. The fusible-alloy pressure relief device comprises a cock body, a pressure relief inlet channel is formed in the bottom of the cock body, and a pressure relief outlet channel is formed in the side wall of the cock body. A component placement chamber is formed in the middle of the cock body and penetrates throughthe top of the cock body, and a sealing tip blocked at the pressure relief inlet channel and a fusible-alloy precast block are arranged in the component placement chamber. A press mounting piece witha central hole is arranged at the top of the cock body and is used for press-mounting the fusible-alloy precast block. The sealing tip can be pushed by medium pressure in the inner chamber of a container to extrude melt alloy liquid from the central hole of the press mounting piece, and meanwhile the pressure relief outlet channel is opened. The fusible-alloy pressure relief device has the advantages that a guide cap is pushed through the sealing tip and a disk spring to extrude the melt alloy liquid from the filter screen of the central hole of a pressing nut, and meanwhile the pressure relief channel is opened, thus the purpose of pressure relief is achieved, and the risk of failure of the fusible-alloy pressure relief device under normal operation is reduced.

The invention provides an explosion-proof motorcycle fuel tank, and relates to the technical field of motorcycle fuel tanks. The explosion-proof motorcycle fuel tank comprises a main tank body, the inner portion of the main tank body is fixedly provided with an explosion-proof layer, the inner portion of the main tank body is fixedly provided with a partition plate, the top of the partition plateand an inner cavity of the main tank body cooperate with each other to form an oil storage cavity, and the bottom of the partition plate and the inner cavity of the main tank body cooperate with eachother to form a secondary oil cavity. The explosion-proof motorcycle fuel tank has the advantages that through the cooperation of the main tank body, explosion-proof layer, partition plate, oil storage cavity, oil filler pipe, first end cover, oil leakage hole and fusible alloy, once the oil temperature in the main tank body is excessively high, or gasoline in the main tank body has the tendency of combustion and explosion, the fusible alloy is firstly fused, so that the gasoline in the oil storage cavity enters the inner portion of the secondary oil cavity from the oil leakage hole to achievethe purpose of reliving pressure, the tendency of the explosion is reduced, the safe and stable marching of a motorcycle is convenient, and the personnel safety of a riding person is ensured.

The invention discloses an ultrahigh-pressure fully-automatic pressure relief device. The ultrahigh-pressure fully-automatic pressure relief device comprises a main body and a step motor positioned at the right side of the main body, wherein the main body comprises a pressure relief cavity which is through in two sides; the pressure relief cavity comprises a sealing cavity at the left side, a regulating cavity on the middle and a threaded cavity at the right side, wherein a screw plug I at the left side and a valve seat at the right side are arranged in the sealing cavity; an ejector pin which is thin in left portion and thick in right portion is arranged in the regulating cavity; the left end of the ejector pin is equipped with a tip which extends into a valve hole; the threaded cavity is internally matched with a screw; the left end of the screw is bumped, and abuts against the right end of the ejector pin; the right end of the screw is equipped with a shaft hole with a key slot; the shaft hole is in clearance fit with a motor shaft of the step motor through a flat key; the lower end of the main body is equipped with an oil inlet which is fixedly equipped with an oil inlet nozzle; and the oil inlet communicates with a first oil inlet hole path. According to the ultrahigh-pressure fully-automatic pressure relief device disclosed by the invention, the step motor is adopted to drive the screw to regulate movement of the ejector pin, so that the tip is regulated to extend into the valve opening by certain length, and therefore, linear pressure relief is realized, linear changes of system pressure are realized, and a production process curve is met.

The invention discloses a pressure relief valve. The pressure relief valve is compact in structure and convenient to install. The pressure relief valve is characterized by comprising a pressure reliefopening and a pressure relief valve body opposite to the pressure relief opening, wherein the pressure relief valve body comprises a pressure relief base, a seal piece, an elastic piece and a clampedconnection piece, a round cavity is formed in the pressure relief base, one end of the cavity communicates with the pressure relief opening, the other end of the cavity is connected with the clampedconnection piece in a clamped manner, a certain interval for gas exhaust is reserved between the clamped connection piece and the pressure relief base, the seal piece is located in the cavity, the seal piece and the pressure relief opening are attached to each other, the elastic piece is located between the seal piece and the clamped connection piece, and the elastic piece tightly abuts against the seal piece and the clamped connection piece. In the pressure relief process, when gas enters the cavity from the pressure relief opening, the gas abuts against the seal piece in a contact manner, along with increase of the volume of the gas, the seal piece moves upwards to push the elastic piece, the seal piece stops movement when abutting against the clamped connection piece in a contact manner, the gas flows out from the gap between the cavity and a buckle, and the pressure relief purpose is achieved.

The invention relates to a two-position three-way electromagnetic valve, in particular to a full-unloading disc type magnetic pole large-drift-diameter two-position three-way electromagnetic valve, which is used for solving the problems that when an existing two-position three-way electromagnetic valve is designed in a non-unloading large-drift-diameter mode, the opening and closing response is slow, the structural size and the weight are large, then the capacity of an air inlet channel and an air outlet channel is limited, and the response performance of a high-thrust engine of over 3000N is influenced. The full-unloading disc type magnetic pole large-drift-diameter two-position three-way electromagnetic valve comprises a valve body, an electromagnetic shell, an outer lining ring, an inner lining ring, an exhaust valve seat, an air inlet valve seat, a valve element rod, a reset spring, a magnetic disc and a coil.

Disclosed is a gas mixing device of a burner. The gas mixing device of the burner comprises a gas mixing cavity, wherein a burner fan and a metal fiber burner head are communicated through the gas mixing cavity, and a fuel gas outlet assembly is arranged in an air outlet, connected with the burner fan, of the gas mixing cavity. The fuel gas outlet assembly comprises a fuel gas outlet pipe and a baffle, wherein the fuel gas outlet pipe is arranged in the air outlet and is communicated with a fuel gas inlet connector of the burner, and the baffle stretches into the gas mixing cavity from the air outlet of the burner fan through the fuel gas outlet pipe. According to the invention, the length of a non-combustion area of the burner head is effectively reduced, uniform gas mixing can be achieved in the short distance, the flame distribution is uniform, the capacity of the gas mixing device for adapting to different brands of burners is quite high, the problem that the difference of the air volumes in the peripheral direction of burner heads of different burners is large can be conveniently solved by the same structure, uniform distribution of flames of the burner head is facilitated, the pressure relief function is fulfilled under the condition of tempering, the phenomenon that a safety accident happens due to the damage to the burner fan is avoided, the equipment installation and running space is saved, and the cost is reduced.

The invention relates to a low-melting-point and high-strength heat-sensitive material and a preparation method thereof. The heat-sensitive material can be used in a pressure relief protection deviceof a pressure container. The heat-sensitive material is simple in process and low in manufacturing cost; the own mechanical property of the material is improved to the great extent while a low meltingpoint and a small melting range of an alloy are ensured, so that the material can be applied in more wide fields.

The invention discloses a pressure relief device which comprises a disk-shaped shell. The inner side wall of the top of the shell is provided with a ring-shaped groove; the shell is also provided with an air relief hole communicated with the ring-shaped groove; the inside of the ring-shaped groove is connected with a baffle by a spring; the diameter of the baffle is between the inner diameter and the outer diameter of the ring-shaped groove; and the thickness of the baffle is less than the width of the ring-shaped groove. The pressure relief device disclosed by the invention has a simple structure and is convenient to use; and as the gap between the ring-shaped groove in the shell and the baffle is regulated by the pressure applied to the baffle by the air pressure, the gravity of the baffle and the elastic pressure applied to the baffle by the spring according, not only the requirement on pressure relief can be effectively met, but also the effect of automatically regulating the pressure can be implemented and production development of enterprises is promoted.

The object of the invention is to provide a pressure-adjustable pressure release valve to enlarge the application scope of the pressure release valve. The pressure-adjustable pressure release valve comprises a valve body with one closed end and one water inlet at the other end, the side wall of the valve body is provided with pressure release ports, the closed end of the valve body is provide with a spring and a valve core, one end of the spring is butted against the end portion of the inner wall of the valve body, and the other end of spring is butted against the valve core. The pressure release valve is characterized in that a plurality of pressure release ports are arranged to match with the release resistive bolt through the screw thread. During use, the inlet pressure can push the valve core to overcome the force of the spring to move towards the closed end of the valve body without confronting the pressure release ports, so that the liquid in the inlet can be released from the pressure release ports to achieve the purpose of the pressure releasing. The distances between the pressure release ports and the closed end of the valve body are different due to the different positions of the pressure release ports, so that users can adjust the pressure of the pressure relief by screwing off the release resistive bolt of one of the pressure release ports.

The invention discloses a blasting pin safety valve which comprises a pressure relief opening, a valve element and a blasting pin. A two-way curved neck is fixedly installed on the top of a connection base, the two sides of the top of the two-way curved neck are each provided with a safety valve body through a bolt, and one side of the safety valve body is provided with the pressure relief opening. Use is convenient due to the arrangement of a pressing plate. The pressing plate is an up-down movable device. One side of each of two corners of one diagonal of the pressing plate is provided with a small bolt. The two sides of the pressing plate are provided with four circular holes corresponding to supporting columns of the pressing plate. The other sides of the two small bolts are embedded into the inner sides to the circular holes. When the pressing plate is adjusted, the two small bolts are loosened at first, then, the pressing plate is pushed up and down, the height position can be adjusted, the two small bolts are rotated after the height is adjusted to jack the supporting columns of the pressing plate, and therefore fixing is achieved. When different blasting pressures need to be used, blasting pins with different lengths can be used. The blasting pin manufacturing difficulty is lowered, and installation is convenient.

The invention discloses a pressure relief system for an engine supercharger. The pressure relief system comprises a supercharger body and an intercooler, wherein one end of the supercharger body is provided with an intercooler gas inlet tube in a communication mode; the other end of the intercooler gas inlet tube communicates with one end of the intercooler; the other end of the intercooler is provided with an intercooler gas outlet tube in the communication mode; the other end of the supercharge body is provided with a gas inlet tube in the communication mode; a pressure relief valve is arranged between the other end of the gas inlet tube and the other end of the intercooler gas outlet tube; one end of the pressure relief valve is provided with a pressure relief valve gas inlet tube in the communication mode; and the pressure relief valve gas inlet tube is fixedly connected to the intercooler gas outlet tube through a fixing mechanism. According to the pressure relief system disclosedby the invention, the pressure relief valve is separated from the supercharger body, and the pressure relief valve is independently arranged between the intercooler and the supercharger body gas inlet tube, so that the pressure relief purpose can be realized, an after-pressing or before-pressing channel does not need to cast in the supercharger body, the inner wall of an outlet of a pressing shell is smooth, gas flow is smooth, and noises can be eliminated.

The invention discloses an oil system for a heat medium heating furnace. The oil system comprises the heat medium heating furnace, a circulating pump, an oil storage tank, an expansion tank, an oil supply pipe and an oil returning pipe. The oil returning pipe is connected with a suction port of the circulating pump, an outlet of the circulating pump is connected with an inlet of the heat medium heating furnace, an outlet of the heat medium heating furnace is connected with the oil supply pipe, the expansion tank is located at the highest position of the system, the oil storage tank is located at the lowest position of the system, the highest position of the oil returning pipe is provided with an oil-gas separator, the bottom of the expansion tank is provided with an expansion pipe, the expansion pipe is connected with an outlet of the oil-gas separator, an overflow pipe is arranged above the expansion tank to be connected with the oil storage tank, and a ventilating opening is additionally arranged on the upper portion of the oil storage tank. The oil system is characterized in that a partition plate separating the left side from the right side is arranged on the cross section in the middle of the oil storage tank, and the bottom of the oil storage tank is provided with a U-shaped communicating pipe which enables two chambers on the left side and the right side of the partition plate to be communicated. Hot oil steam is separated by cold oil on the left side of the oil storage tank, does not contact with the outside atmosphere, and is not discharged out. After cooling, the oil steam returns to the oil storage tank, oiliness can be fully protected, and air is not polluted.

The invention belongs to the field of compressors, and particularly discloses a long-service-life piston ring sealing system. The system involves piston rings arranged on a piston and further comprises supporting rings, the supporting rings are coaxially fixed on the piston rings, and the outer diameters of the supporting rings are smaller than that of the piston rings; cuts are formed in the piston rings and the supporting rings, and the cuts in the piston rings and the cuts in the supporting rings are staggered; circumferential grooves are formed in the side walls of the piston rings, balance holes are formed in the sides, facing high pressure, of the piston rings, and the balance holes communicate with the circumferential grooves; and magnetic blocks are fixedly arranged in the circumferential grooves, and the heat conductivity coefficient of the supporting rings is larger than that of the piston rings. Compared with traditional piston rings, the scheme has the beneficial effects that by means of the unique structure, the strength of the piston rings is guaranteed, and meanwhile, the improvement is carried out in several aspects of reducing the friction force, reducing chippingsand avoiding the local high temperature, so that the abrasion of the piston rings is effectively relieved, and the service life of the piston rings is greatly prolonged.