56results about How to "Reduce internal pressure" patented technology

The invention relates to a stem cell bioactive nano-vesicle with efficient inflammation regulation and tissue repair effects, the average particle size of the nano-vesicle is 100-350nm, the polydispersity index (PDI) is 0.05-0.40, and the expression rate of phosphatidylserine (PS) on the surface of the nano-vesicle is greater than 40%. According to the preparation method, stem cells are subjected to apoptosis induction, and then a programmed serial extrusion process is adopted to prepare the nano-vesicles. The nano vesicles are moderate in particle size, uniform in distribution and high in production efficiency, the preparation process is easy to operate, the quality is stable and controllable, and the nano vesicles have excellent technical effects in the aspects of repair and regeneration of inflammation injury type tissues and organs.

The invention relates to the technical field of wire mesh demisters, in particular to a wire mesh demister for gas-liquid separation, an annular rotating groove is reserved between an outer pipe and an upper pipe, a fluted disc rotationally mounted through a bearing is arranged at the upper end of the outer pipe and the upper end of the upper pipe, and an extension rod extending along the annular rotating groove and fixedly connected to the fluted disc is arranged on the rotating pipe; the air suction device has the advantages that the rotatable rotating pipe is arranged in the middle of an existing silk screen layer, the piston rod is matched with the one-way valve, the air suction purpose is achieved, then the piston rod is driven to descend to extrude air flow, the air suction effect is improved, and the service life of the air suction device is prolonged. The air flow is discharged along the opening groove right facing the silk screen layer, the adhered water drops are blown to be rapidly gathered to form water drops to drop, blocking is avoided, through cooperation of the driving assembly and the linkage assembly, the rotating pipe is driven to rotate along the circumference of the silk screen layer while the piston rod descends, and full-angle cleaning of the silk screen layer is achieved.

The invention discloses a cable for a new energy electric vehicle, and relates to the technical field of cables for new energy electric vehicles, and the cable comprises circulation cavities which are installed at the outer part of a cable wear-resistant protection sleeve at equal intervals, and are used for enabling gas to be dissipated from an exhaust cavity channel formed in the side surface of the circulation cavities in a surrounding manner when pressurized gas is generated in the circulation cavities, under the cooperation of the current-carrying capacity dynamic self-adaptive adjusting assembly, efficient conduction, resistance reduction and current-carrying capacity improvement are integrally and effectively realized, so that the conductivity of the cable is improved, the energy loss is reduced, the high requirement of a new energy electric vehicle on the cable can be met, the overall use performance and safety of the electric vehicle cable are improved, and the service life of the electric vehicle cable is prolonged. Meanwhile, under the cooperation of the dynamic adjusting assembly, when the current is increased, the internal pressure is dynamically reduced, the service life of the cable is prolonged, automatic adjustment and efficient heat dissipation of the internal pressure and temperature of the cable are achieved, and safe and stable operation of the cable for the new energy electric vehicle is guaranteed.

The invention relates to the field of polyethylene wax preparation, and discloses a preparation method of polyethylene wax, in order to solve the problems that in an existing preparation method, energy consumption is high, and the production cost is greatly increased, the preparation method specifically comprises the following steps that S1, raw materials are prepared, high-molecular-weight polyethylene resin, a catalyst and a modifier are prepared, and the modifier is an oxygen-containing monomer; s2, low-temperature catalytic cracking: adopting a continuous low-temperature cracking reactor, and adding a high-molecular-weight polyethylene resin raw material into the reactor; s3, carrying out molecular functional modification; and S4, carrying out post-treatment and purification. According to the preparation method of the polyethylene wax, low-temperature catalytic cracking is carried out at a relatively low temperature, so that the energy consumption and the production cost are reduced, meanwhile, by-products and harmful substances possibly generated by high-temperature cracking are reduced, and by carrying out molecular functional modification and introducing polar groups, the application field of the polyethylene wax is expanded, and the additional value of the polyethylene wax is improved.

The utility model discloses a pipe mold and relates to the technical field of molds. The die comprises a feeding end core die, a discharging end core die, a die fixing sleeve, a discharging opening die, a feeding outer die and a feeding end die plate. The feeding end core mold is sleeved with the feeding outer mold, the feeding end core mold and the feeding outer mold are fixed to the feeding end mold plate through bolts respectively, a feeding port is formed in the side wall of the feeding outer mold, a spiral guide-in groove is formed in the position, below the feeding port, of the outer wall of the feeding end core mold in the direction towards the discharging end, and the spiral guide-in groove is communicated with the feeding end mold plate. The discharging end core mold is fixed to the feeding end core mold through a bolt, the discharging end core mold is sleeved with a discharging opening mold, a mold fixing sleeve is arranged between the discharging opening mold and the feeding outer mold, and the discharging opening mold, the feeding outer mold and the mold fixing sleeve are connected through bolts. Internal pressure is reduced in a spiral feeding mode, meanwhile, the core mold at the feeding end is of a hollow pipe structure, the mass of the core mold is reduced, the consistency of the heating temperature of the inner mold and the heating temperature of the outer mold can be effectively kept, the wall thickness is uniform, the product percent of pass is increased, and the production cost is reduced.

The invention relates to the technical field of petroleum pipeline cleaning, in particular to a pipeline cleaning device based on a pipeline intelligent automatic ball throwing and collecting mechanism. The flow channel switching assembly comprises a first flow channel, a second flow channel, a first piston and a second piston; the separation assembly comprises a ball receiving barrel and a separation box; the unblocking assembly comprises an eccentric disc and a spiral strip, when the paraffin removal balls and crude oil in the first flow channel and the second flow channel are blocked, the eccentric disc eccentrically rotates to generate vibration, meanwhile, the spiral strip rotates and stirs, the recovery process of the paraffin removal balls is fully automatic, the dependence on manual operation is reduced, the labor intensity and the safety risk in operation are reduced, and the recovery efficiency is improved. When the first flow channel is blocked, the pressure relief cover guides crude oil to flow reversely, internal pressure is reduced, when the pressure relief cover is jacked up, the eccentric disc rotates eccentrically, high-frequency low-amplitude vibration is generated, stirring disturbance is conducted in cooperation with the spiral strip, blocked paraffin removal balls are dredged, and work efficiency reduction and equipment damage caused by blocking are prevented.

The utility model relates to the technical field of chemical distillation, and provides a chemical pressure distillation heat exchanger which comprises a shell, an air inlet pipeline and an air outlet pipeline, the air inlet pipeline is installed at the top of the shell, the air outlet pipeline is installed at the bottom of the shell, supporting bases are fixed to the two ends of the bottom of the shell, and supporting adjusting assemblies are arranged in the supporting bases. The heat exchange assembly is arranged in the shell and comprises a liquid inlet pipeline, the liquid inlet pipeline is installed in the side surface of the shell, and a liquid outlet pipeline is arranged on the side surface of the shell. By means of the technical scheme, the problems that in the related technology, when a heat flow medium enters all pipe bundles in the heat exchanger, due to the split-flow conveying mode, the total contact area of heat exchange is large, the amount of cold flow medium which absorbs heat and is vaporized into a gas state is large, and the pressure intensity in a shell cavity is changed in the process that the cavity of the whole heat exchanger shell is filled with the cold flow medium are solved; the problems that the strength of the shell is affected to a certain degree, and movement and adjustment are inconvenient are solved.

The invention discloses a cable for new energy electric vehicles, relates to the technical field of cables for new energy electric vehicles, and comprises: a circulation cavity, which is equally divided and equidistantly arranged on the outside of a wear-resistant protective sleeve of a cable, and is used for dispersing the gas from an exhaust cavity opened around the side surface thereof when pressurized gas is generated inside; by cooperating with a dynamic adaptive current-carrying capacity adjustment component, the whole effectively realizes efficient conduction, reduces resistance, and increases current-carrying capacity, thereby improving the electrical conductivity of the cable, reducing energy loss, meeting the high requirements of new energy electric vehicles for cables, and improving the overall performance and safety of electric vehicle cables; at the same time, with the cooperation of the dynamic adjustment component, it is convenient to dynamically reduce the internal pressure when the current increases, thereby increasing the service life of the cable, realizing automatic adjustment of the internal pressure and temperature of the cable and efficient heat dissipation, and ensuring the safe and stable operation of the cable for new energy electric vehicles.

The utility model provides a new energy automobile air conditioner filling valve which comprises a valve body and a valve element located in the valve body, one end of the valve body is further provided with a branch pipe used for outputting refrigerants, the filling valve further comprises a pressure relief assembly, the pressure relief assembly comprises a pressure relief cover, a base, an air inlet pipe, an air outlet pipe and a valve shaft, and the pressure relief cover and the base are fixedly installed on the top of the valve body respectively. A valve plate is fixedly connected to the base, one end of the air inlet pipe penetrates into the base and is located at a through groove of the valve plate, the other end of the air inlet pipe penetrates into a cavity of the valve body, an air outlet pipe and a valve shaft penetrate through the top of the pressure relief cover, and a cavity of the air outlet pipe is communicated with the cavity in the pressure relief cover. The valve shaft is located in the center of the pressure relief cover and movably connected with the pressure relief cover through the bearing, the fixing rod is located on one side of the valve shaft, high-pressure refrigerants are discharged through the air inlet pipe, the through groove, the pressure relief cover and the air outlet pipe, internal pressure is reduced, residual refrigerants are discharged in time, the valve body is far away from the air outlet pipe, and it is avoided that the residual refrigerants are sprayed out and extremely prone to frostbite workers.

The utility model relates to the technical field of automobile shock absorber damping valve structures, and discloses an automobile shock absorber damping valve structure convenient to install, which comprises a first support connector, a fixed upper support is fixedly installed at the top of the first support connector close to the center, and a damping valve upper shell is fixedly installed at the bottom of the first support connector. An upper shell groove is formed in the damping valve upper shell, a damping valve lower shell is movably connected to the position, close to the interior of the upper shell groove, of the interior of the upper shell groove, a second supporting connector is fixedly installed at the bottom of the damping valve lower shell, and telescopic damping supporting columns are movably connected to the positions, close to one side, of the front face of a second supporting connecting plate in an axial symmetry mode; limiting resisting columns are fixedly installed on the portions, close to the tops, of the front faces of the telescopic shock absorption supporting columns, and by arranging the telescopic shock absorption supporting columns, equipment can be fixed, parts can conveniently support the equipment, stable shock absorption is achieved, equipment driving is facilitated, and the shock absorption effect is conveniently achieved.

The utility model relates to the technical field of refrigeration, in particular to a waste heat treatment condensate water refrigeration device. The waste heat treatment condensate water refrigerating device comprises a shell, a middle embedded cylinder is fixedly installed in the inner disc center of the shell, a plurality of annularly-distributed threaded rods are fixedly embedded in the position, on the periphery of the middle embedded cylinder, of the inner disc wall of the shell, and an air inducing assembly is arranged on the shell. According to the waste heat treatment condensate water refrigerating device, due to the fact that moisture is sprayed in a circular diffusion mode through the middle embedded cylinder, the contact area between the moisture and the annular activated carbon net column is enlarged, and meanwhile the moisture treatment efficiency is improved; the annular activated carbon net columns are prone to amplitude, so that the annular activated carbon net columns internally press the springs, the internal pressure between the annular activated carbon net columns and the shell is effectively reduced, and the annular activated carbon net columns are effectively protected.

The invention discloses a bus duct, and belongs to the field of power supply switching equipment. A bus duct comprises a frame which comprises a side connecting plate and a cover plate, the side connecting plate and the cover plate jointly form an I-shaped structure through a connecting piece, the side connecting plate is provided with ventilation holes, and a bus bar is installed in the I-shaped structure; the protection assembly is installed in the frame and comprises a sealing plate and a heat sensitive element, a first groove is formed in the side, close to the busbar, of the upper cover plate, the sealing plate is installed in the first groove through an elastic piece, and the heat sensitive element is clamped between the sealing plate and the side connecting plate. The heat sensitive element deforms or fractures, after the sealing plate loses the support of the heat sensitive element, the ventilation hole is opened and closed under the action of the elastic piece, the internal damage of the bus duct caused by external overheating is prevented, and the protection assembly carries out forced heat exchange on the internal of the bus duct to ensure that the internal temperature of the bus duct is well controlled.

The invention discloses a biological fermentation feed inoculation device which comprises an inoculation tank, a feed inlet connected to the top of the inoculation tank and used for feeding and a stock solution tank used for storing inoculation liquid, and the stock solution tank is fixedly connected to the left side of the inoculation tank; the biological fermentation feed inoculation device further comprises a first shaft rod which transversely penetrates through and is rotationally connected to the interior of the feeding opening, a buffer plate is rotationally connected to the top of the inner side of the feeding opening, connecting rods are fixedly connected to the outer side of a second shaft rod at equal intervals, and a bottom groove is formed in the bottom of the inoculation tank in a communicating mode. The material inoculation quality can be improved, and the inoculation efficiency can be improved. The invention also discloses a preparation method of the biological fermentation feed, and the preparation method of the biological fermentation feed is used for fermenting the straw material, so that the nutritional value and the utilization rate of the straw can be improved.

The invention provides a reaction system for preparing butyraldehyde by propylene carbonylation, comprising: a reactor; a side wall of the reactor is sequentially provided with a catalyst inlet, a propylene inlet and a synthesis gas inlet from top to bottom; the bottom of the reactor is provided with a solvent inlet; two micro-interface generators are arranged inside of the reactor from top to bottom, and the micro-interface generator located at a top end is connected to the propylene inlet to break the propylene gas into micron-scale micro-bubbles; the micro-interface generator located at a bottom is connected to the synthesis gas inlet for breaking the synthesis gas into micron-scale micro-bubbles; the outlets of the two micro-interface generators are opposite, and the outlets are connected with a gas distributor for evenly distributing raw materials. The reaction system of the present invention has low energy consumption, low cost, high safety, low reaction temperature and low reaction pressure, few side reactions and high yield of n-butyraldehyde, which is worthy of wide popularization and application.

The present invention discloses a method for preparing Bi2212 superconducting wire / magnet by low-pressure melting recrystallization heat treatment, the method comprising: 1. putting Bi2212 precursor powder into an Ag sheath for heating and vacuum degassing; 2. bunching and drawing to obtain multi-core Bi2212 wire; 3. pre-high-pressure heat treatment of the multi-core Bi2212 wire; 4. low-pressure melting recrystallization heat treatment of the Bi2212 wire or winding it into a magnet. The present invention first uses heating and vacuum removal to reduce the air pressure in the wire, and then compresses the wire by pre-high-pressure heat treatment to make it close to the theoretical density, so that low-pressure melting recrystallization heat treatment can be performed at a conventional pressure of 1 / 5 to 1 / 10, which greatly reduces the difficulty of high-pressure heat treatment, improves the current-carrying performance of Bi2212 superconducting wire or Bi2212 superconducting magnet, reduces the research and development threshold, and is conducive to the application of Bi2212 superconducting wire in fusion magnets.

The invention provides a square supercapacitor. Comprising a shell, an upper cover, an anti-explosion pressure release valve and a gas storage cavity. The shell is used for protecting internal components; the upper cover is used for sealing the shell space; the anti-explosion pressure release valve is mounted on the upper cover side and is used for forming a one-way valve; the gas storage cavity is located in the shell and used for temporarily storing part of gas generated in the operation process. The gas storage cavity is additionally arranged in the square super capacitor to temporarily store gas generated by chemical reaction to prevent the gas from generating pressure in the capacitor, when the internal gas pressure exceeds a safety threshold, the explosion-proof pressure release valve is started to reduce the internal pressure, and when the gas pressure is further increased, the explosion-proof pressure release valve is started to reduce the internal pressure. And the explosion-proof pressure release valve can be broken to release gas in a short time so as to prevent explosion. The problem that in the prior art, in the application process of a square supercapacitor, due to the fact that gas is generated in the square supercapacitor due to unstable electrolyte, electrode material aging, high water content, improper working conditions and the like, the use stability is affected by too high internal pressure is solved.

The utility model relates to the technical field of water quality on-line monitors, in particular to a water quality on-line monitor with a suck-back prevention function. According to the technical scheme, the monitoring instrument comprises a monitoring instrument cabinet body and an analysis and detection module installed in the monitoring instrument cabinet body, a waste liquid collecting pipe used for collecting waste liquid is installed on the outer wall of the monitoring instrument cabinet body, and an anti-suck-back device used for preventing the waste liquid from being sucked back into the analysis and detection module is installed between the analysis and detection module and the waste liquid collecting pipe. According to the utility model, the waste liquid of the water quality on-line monitoring instrument can flow out smoothly, can be prevented from flowing back and can be prevented from entering the analysis and detection module to damage the instrument, and the use safety is improved.

The invention relates to the technical field of water treatment equipment, and discloses a water-saving device suitable for a circulating cooling water system, the water-saving device comprises a treatment box, the left side wall and the right side wall of the treatment box are respectively provided with a water inlet pipe and a water outlet pipe, the bottom of the water outlet pipe is provided with a drain outlet, and the drain outlet is internally provided with an anti-blocking assembly. An electromagnetic descaling instrument is installed in the treatment box, the two ends of the electromagnetic descaling instrument are connected with the water inlet pipe and the water outlet pipe through two flange pieces correspondingly, the outer sides of the two flange pieces are each sleeved with a hoop, a buckle assembly is arranged on the outer side of each hoop, and a cushioning assembly is arranged in a cushioning block. The anti-scaling capacity is improved through the electromagnetic descaling instrument, scale is reduced, and the service life of equipment is prolonged. A moisture treatment device is arranged to protect a sensor, a hoop and a cushioning assembly are arranged to enhance the sealing performance and stability, floccules are separated through a filter plate and a drain outlet, automatic cleaning is achieved in combination with an impeller and a filter cylinder, and green water-saving management is achieved.

The utility model discloses a pipe network pressure-superposed matching and parallel connection high-level regulation and storage bag type air pressure water tank pressurization water supply system. The system comprises a municipal pipe network, a flow stabilization tank, a variable frequency pump set, a water supplementing main pipe, more than two bag type air pressure water tanks, a pressurization water supply main pipe and a user pipe network, a bag type air pressure water tank comprises a water supplementing branch pipe, a pressurizing water supply branch pipe, a water drainage pipe, an air supplementing opening and a security check device. A lower limit pressure switch, an upper limit pressure switch and an ultraviolet lamp are sequentially arranged on the rear section of the pressurizing water supply main pipe in the water flow direction. According to the utility model, a plurality of high bag type air pressure water tanks are used for regulating, storing and supplying water to a user pipe network, so that the impact on a municipal water supply pipe network in a water peak period is reduced; pressurized water supply is performed on a user pipe network by adopting an air pressure extrusion and gravity self-flowing form in the air pressure water tank, so that the requirement of multiple user pipe networks on pressurized water supply is met; the water replenishing operation of the variable-frequency pump set is controlled by the double-pressure switch, the linkage control logic is simple, and frequent starting and stopping of the variable-frequency pump set are avoided.

The application provides a battery monomer and a battery pack, and relates to the technical field of batteries. The battery monomer comprises a shell with an opening, a pole provided in the shell, an electrode assembly provided in the shell and electrically connected with the pole, an end cover connected with the shell to cover the opening, and an explosion-proof valve provided on the end cover. The shell is an integral molding structure, the end cover and the pole are oppositely arranged along a first direction, one side of the end cover close to the electrode assembly is provided with an exhaust groove, and the explosion-proof valve and the exhaust groove are oppositely arranged along the first direction. In the battery monomer provided by the application, the position of the pole is no longer a weak area of the shell, so that the shell has higher structural strength at the position, thereby being able to resist greater internal pressure of the shell; the exhaust groove on the end cover facilitates the dispersion of high-temperature and high-pressure gas in the shell to the explosion-proof valve to reduce the internal pressure of the shell. Therefore, the safety of the battery monomer is improved.

The utility model discloses a leakage circuit breaker mounting structure, and the circuit breaker shell is composed of base, middle seat and upper cover, and the middle seat and upper and lower cover cooperate to form L pole and N pole matrix, and the L pole matrix contains arc extinguishing chamber, L pole moving and static contact group and incoming and outgoing line terminal; the N pole matrix contains circuit board, N pole moving and static contact group and incoming and outgoing line terminal, and the middle seat is divided into main seat body and corner piece, the corner piece is corner structure, one end of the inserted board is inserted into the matching recess of the corner mouth of main seat body, the other end of the matching surface is abutted with the abutted mesa of main seat body, and the closed corner mouth outer edge is located between the base and the upper cover, and the L pole and N pole matrix are communicated through the corner mouth to form magnetic ring placement area, the magnetic ring is obliquely installed, and the L pole and N pole power supply wire are provided with the magnetic ring. The product solves the problem that the magnetic ring is difficult to install in the limited space due to the large volume.

The utility model discloses a novel device with a hot delivery roller structure. The novel device comprises a hot delivery roller body, end plates are installed at the two ends of the hot delivery roller body, a round hole is formed in the center of each end plate and connected with a roller shaft, the inner side of each end plate is a plane, the outer side of each end plate is an arc face, and each end plate is provided with a through hole. The outer side of the end plate is changed into an arc surface structure, so that stress on the surface of the hot delivery roller and the roller shaft can be effectively dispersed, the service life of the roller shaft is prolonged, and the production stability is improved. The through holes are formed in the end plates, so that gas which expands after being heated in the hot delivery roller body is conveniently exhausted, the pressure in the hot delivery roller is reduced, the effect of reducing the temperature of the hot delivery roller is achieved, the risk that the roller surface of the hot delivery roller cracks after being heated is reduced, the service life of the hot delivery roller is prolonged, and stable production is guaranteed. According to the utility model, the service lives of the hot delivery roller and the roller shaft are effectively prolonged, the stability of equipment in the production process is greatly improved, the stable operation of production is ensured, the consumption is reduced, and the cost of spare parts is saved.

The utility model relates to the technical field of electronic cigarettes, in particular to an electronic cigarette capable of preventing oil leakage. The electronic cigarette comprises an oil cup, an atomizing tube, oil storage cotton, an atomizing core and oil cup support silica gel. A suction nozzle is formed at the top of the oil cup, an atomizing pipe corresponding to the suction nozzle is connected in the oil cup, and oil storage cotton is arranged in the atomizing pipe; the oil storage cotton forms an atomization channel communicated with the suction nozzle; an atomizing core is arranged in the atomizing channel; the oil cup bracket silica gel is arranged at the bottom of the oil cup; an oil inlet is formed in the bottom end of the atomizing pipe; the bottoms of the tar cup support silica gel, the tar cup and the atomizing pipe are closed to form a tobacco tar storage space; diversion silica gel is sleeved outside the atomizing pipe above the oil inlet hole; the flow guide silica gel is matched with the oil cup support silica gel to isolate a channel through which the tobacco tar flows to the atomization pipe oil inlet hole; and an axial oil guide port is formed in the flow guide silica gel. According to the utility model, the problem of tar leakage caused by tobacco tar pressure is solved; the method can be applied to electronic cigarettes.

The invention discloses a fume hood with a waste gas treatment mechanism, and relates to the technical field of manufacturing of equipment special for atmospheric pollution and environmental protection, the fume hood comprises a fume hood body, an air outlet is formed in the top of the fume hood body, and the waste gas treatment mechanism is arranged in the air outlet. The multi-layer purification effect on the air is completed, and each layer of connecting pipe is provided with different liquids, so that when the waste gas passes through the different liquids, various different hydrophilic and oleophylic impurities in the waste gas can be naturally adsorbed by the different liquids, and the automatic separation effect on harmful substances in the waste gas is completed; meanwhile, the waste gas is discharged into the liquid more uniformly, the situation that the filtering and separating efficiency of impurities in the waste gas is unstable after the waste gas enters due to different saturations of all positions of the liquid in the connecting pipe is avoided, and all positions of the liquid are effectively utilized as much as possible to achieve the stable and efficient impurity separating effect.

The utility model relates to a pyrolysis gasification furnace main body structure, which belongs to the pyrolysis gasification furnace field, and comprises a pyrolysis gasification furnace body, the pyrolysis gasification furnace body comprises a combustion box, the top of the combustion box is fixedly provided with a tail gas treatment box, and the top of the tail gas treatment box is provided with a feeding box communicated with the combustion box; a cover plate is rotationally connected to the feeding box, the strength of the cover plate is improved through an anti-explosion plate, the situation that the cover plate is deformed and damaged due to the fact that the internal pressure of the pyrolysis gasification furnace body is too large after the temperature rises is prevented, further, when the internal pressure of the pyrolysis gasification furnace body continuously rises, the internal pressure of the feeding box is relieved under the action of a pressure relief assembly, and the safety of the pyrolysis gasification furnace body is improved. When steam enters the pressure relief pipe after passing through the air inlet groove and reaches a certain pressure, the pressure relief cover is driven to be jacked upwards, a gap is formed between the pressure relief cover and the pressure relief pipe at the moment, internal steam can be discharged through the gap, and therefore the internal pressure is reduced.

The utility model discloses an excavator hydraulic pump with a pressure relief structure, and relates to the technical field of excavator hydraulic pumps, the excavator hydraulic pump with the pressure relief structure comprises a cylinder body mechanism, the main body of the cylinder body mechanism is of a hollow structure, and the right side of the cylinder body mechanism is fixedly connected with the pressure relief mechanism. According to the buffer type pressure relief oil supply device, buffer storage and rapid backflow supplement of pressure relief oil are achieved through cooperation of the buffer storage connecting pipe, the buffer storage mechanism, the guide assembly, the guide rod assembly, the floating ball assembly, the blocking ball assembly, the supply pipe and the supply pump, and when the oil flows into the buffer storage mechanism through pressure relief, the buffer storage mechanism is connected with the cylinder body mechanism, and the pressure relief mechanism is connected with the cylinder body mechanism. The floating ball assembly drives the blocking ball assembly to close the discharging opening along with rising of the liquid level, and oil liquid is prevented from overflowing. When the oil liquid needs to be supplemented, the supply pump sends the cached oil liquid back to the liquid inlet pipe through the supply pipe, and the oil liquid supplementing speed is increased.

A battery pack configured to discharge a high-temperature gas to the outside of the battery pack without affecting other adjacent battery modules when the gas is generated inside the battery module is disclosed. The battery pack according to one aspect of the present disclosure includes a pack housing; battery modules; and a first side venting channel and a second side venting channel configured to guide a venting gas generated from the battery modules to a collection space at a position corresponding to the battery module, and the pack cover includes a protrusion on a surface of a region corresponding to the collection space.

The utility model discloses a wading sensor cable with a double-layer sheath, which relates to the technical field of sensor cables and comprises a polyurethane outer sheath and a protection assembly arranged on the surface of the polyurethane outer sheath. The protection assembly comprises an elastic supporting sleeve, a PET outer wrapping belt, a tinned copper winding outer shield, a polyolefin inner sheath, a carbon fiber filament filling layer and a rubber waterproof layer, the elastic supporting sleeve is arranged on the surface of the inner side of the polyurethane outer sheath, and the surface of the inner side of the elastic supporting sleeve is connected with the PET outer wrapping belt. According to the wading sensor cable with the double-layer sheath, the problem that the sensing cable is extruded and impacted in liquid is solved through the protection assembly, the double-layer sheath is designed in a matched mode, the internal pressure is effectively reduced, and the influence caused by the change of the internal pressure can be reduced by preventing water from invading through the waterproof layer; and through the flame-retardant assembly, the overall flame-retardant and heat-insulating effects of the device are improved through a multi-layer flame-retardant structure, and damage caused by too high temperature of a storage environment can be avoided.

The application discloses a glue injection explosion-proof transformer and relates to the field of transformers.The transformer body is internally fixedly installed with a fixing frame, and a plurality of exhaust heads are fixedly installed at the top end of the fixing frame.The end portions of the plurality of exhaust heads are all communicated with first air guide pipes.The two ends of the second air guide pipe are all communicated with second air guide pipes.A plurality of air outlet pipes are communicated with the second air guide pipes, and the plurality of air outlet pipes penetrate the bottom end of the transformer body.The application utilizes the plurality of exhaust heads with openings facing the high-pressure gas easy accumulation area, can efficiently collect the gas, and then guides the gas to the air outlet pipes for discharge through the exhaust passage composed of the first air guide pipe, the first air guide pipe and the like.When the communication pipe is opened, the air passage groove and the air flow passage are completely coincident, the smoothness of the gas flow is ensured, the pressure relief efficiency is greatly improved, the internal pressure can be reduced in a short time, and the chain hazards caused by the continuous increase of the pressure are avoided.