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

A degassing and water removal apparatus is used in combination with the testing or replacement of dielectric oil in an RF transmitter. The apparatus comprises at least one ultrasound transducer in vibrational communication with a bulk oil sample held in a tank having a reduced internal air pressure. The tank has fluid connections to the RF transmitter through which oil from the transmitter is drained to the tank and through which the ambient air pressure in the transmitter is reduced. A fluid pump is used to pump the oil from the tank back to the RF transmitter. In a method of using such an apparatus, the RF transmitter is held at reduced internal pressure during the return of oil thereto, so that the oil does not dissolve gases in the atmosphere internal to the RF transmitter.

The invention relates to the field of corrosion protection of ocean engineering materials, and aims to provide a preparation method for an ocean engineering reinforced concrete silane emulsion protective agent. The method comprises the following steps of: previously stirring and dissolving an emulsifier in a reaction kettle by using 40-80 parts by mass of de-ionized water; slowly adding 20-60 parts by mass of silane monomer under high shear force; and then emulsifying at 30-60 DEG C under low-speed stirring for 6-12 hours to obtain uniform stable micro-nano emulsion, namely a product. By using the method, 90 percent of surface water absorption can be reduced, the effect of obstructing erosion of concrete reinforcement by a marine corrosion medium can be achieved, an internal vapor discharge passage is also kept, and internal atmospheric pressure produced to a film layer is reduced. Compared with a pure silane monomer impregnant, the volatilization rate is low, the utilization rate of silane is increased, the infiltration distance is increased, and the full curing time is greatly shortened. Compared with the conventional polysiloxane emulsion, the process is simple, the molecular weight of a filming substance is smaller, the infiltration capacity is stronger, and the filming capacity is higher.

The invention relates to the technical field of energy storage devices, in particular to a battery pack and device. The battery pack comprises a first box body, wherein the first box body comprises aframe and a cross beam, and the cross beam is arranged in the frame, is of a hollow structure and is provided with an exhaust port; a baffle which is connected to the cross beam and seals the exhaustport; and a battery cell which is accommodated in the first box body and is provided with an explosion-proof valve, wherein the explosion-proof valve faces the baffle; and the baffle is configured tobe separated from the state of blocking the exhaust port when the explosion-proof valve of the battery monomer is burst. According to the battery pack and the device provided by the invention, when thermal runaway happens to a certain battery monomer, the explosion-proof valve of the battery cell is burst, so that the baffle is separated from and blocks the exhaust port. On the one hand, air pressure released by the battery cell can be discharged into the cross beam, so that internal air pressure of the accommodating area is reduced; on the other hand, the heat released by the battery cell does not directly face the other battery cells, so that thermal runaway of the adjacent other battery cells 5 is avoided, and the safety performance of the battery pack is improved.

The invention belongs to the technical field of switch cabinet explosion prevention, particularly relates to an explosion-proof device of an inflatable switch cabinet, and provides the following scheme for solving the problems that an explosion-proof cylinder or an explosion-proof box is mostly arranged on a cabinet body, a pressure release valve is arranged on the explosion-proof cylinder, the pressure release mode of the pressure release valve is single, and when the air pressure in the cabinet body is high, the temperature rises and cannot be reduced. The device comprises a cabinet body, cooling boxes are fixedly connected to the inner walls of the two sides of the cabinet body, the two cooling boxes communicate with each other through a same communicating pipe, a liquid cylinder is fixedly connected to the rear side of the cabinet body, a filtering box is movably connected into the liquid cylinder, and a liquid pump is arranged in the liquid cylinder; a same liquid inlet pipe is communicated between the water outlet of the liquid pump and one of the two cooling boxes, and a return pipe is communicated between the other cooling box of the two cooling boxes and the liquid cylinder. The device is convenient to operate, has multiple pressure relief modes, can realize secondary pressure relief, and can cool the cabinet body when secondary pressure relief is achieved.

The invention discloses a vehicular refrigeration/heating lunch box. The vehicular refrigeration/heating lunch box comprises a lunch box main body, wherein a lifting handle, a first display screen, a second display screen, a first heating key, a first refrigeration key, a second heating key and a second refrigeration key are fixed at the upper end of the lunch box main body; a first meal filling hole and a second meal filling hole are formed in the front of the lunch box main body; a charging hole is formed in one side surface of the lunch box main body; a rear shell and a tableware storage device are arranged on the back of the lunch box main body; an exhaust pipe, a first rectangular groove, a second rectangular groove and a pressure reducing body are fixed on one side close to the rear shell in the lunch box main body; the charging hole is electrically connected with the first heating key, the first refrigeration key, the second heating key and the second refrigeration key; and the connected charging hole is electrically connected in series with the first display screen and the second display screen. The vehicular refrigeration/heating lunch box disclosed by the invention has the functions of heating, refrigeration, thermal insulation and preservation.

A dust sensing device is disclosed. The device includes a casing. The casing includes a casing cover and a casing box which are used in match. A gasket is at a connection part between the casing coverand the casing box. The casing cover is at the top of the casing box, is used for closing and opening the casing box, and is provided with fixing connection elements which are fixing bolts. The inside of the casing box is in a cavity state. A gas feeding pipe, a gas discharging pipe, a detector cartridge, an A/D converter, a single chip microcomputer, an electricity storage box, a central processor, a water tank, water pumps and an alarm are disposed in the casing box. The external surface of the casing box is provided with a gas inlet, a gas outlet, a wind turbine, a temperature and humiditydetecting instrument, a display screen, a charging interface and a warning lamp. The front surface of the casing box has a concave surface and a convex surface, the warning lamp and the temperature and humidity detecting instrument are mounted on the convex surface, and the display screen is mounted on the concave surface. The dust sensing device achieves detection of the dust concentration in air, and automatic water mist spraying is performed after the concentration exceeds a standard so as to reduce the dust concentration.

A device capable of supplying an internal combustion engine with fuel while improving the utilization rate of vaporized fuel. A temporary transition from a third state (primary recovery path FL1: closed, secondary recovery path FL2: closed, second vaporized fuel path VL2: closed, condenser 30: decompressed) to a fourth state (primary recovery path FL1: closed, secondary recovery path FL2: closed, second vaporized fuel path VL2: open, condenser 30: decompressed) is achieved. This temporarily increases an internal air pressure P of a condenser 30, and the kinetic energy of a vaporized fuel V leaked out of a first fuel tank 40 through the second vaporized fuel path VL2 is able to sweep away a first fuel F1 in a liquid state accumulated in a vacuum pump 36 to the first fuel tank 40.

The invention discloses an efficient and automatic drying system for a food processing production line. The efficient and automatic drying system comprises a conveying belt arranged on a rack, a material carrying disc arranged on the surface of the conveying belt, a microwave drying machine arranged above the conveying belt and a material box; a feeding port of the microwave drying machine faces the upper surface of the conveying belt, a lifting mechanism used for pushing the material carrying disc to ascend into the feeding port of the microwave drying machine is arranged on the portion, below the microwave drying machine, of the rack, two material conveying pipes are arranged at a discharging port in the lower end of the material box, and material scattering mechanisms are arranged at ports of the two material conveying pipes; and each material scattering mechanism comprises a linear driving mechanism, a deflection driving mechanism and a material stirring rod, and the ports of the material conveying pipes are rotationally connected with movable parts of the linear driving mechanisms. According to the system, rapid food drying operation on assembly line production can be achieved, it is guaranteed that materials are rapidly and evenly laid on the material carrying disc, the situation of uneven drying caused by accumulation is avoided, the product quality is stable, the drying efficiency is higher, and practicability is high.

The invention discloses a box door auxiliary closing device of a steam cabinet. The box door auxiliary closing device comprises a box door state detector, a timer, at least one exhaust valve and a central controller, wherein the box door state detector sends out a door closing signal when detecting that a box door has the closing action; the timer sends out an ending signal after finishing the timing operation; the at least one exhaust valve is arranged in a box in a penetration manner; the central controller is electrically connected with the box door state detector, the timer and the at least one exhaust valve respectively, controls the at least one exhaust valve to be opened according to the door closing signal, and simultaneously starts the timer, and after the timer finishes the timing operation, the central controller controls the at least one exhaust valve to be closed according to the ending signal. The at least one exhaust valve is automatically opened when a user closes the box door, so that the air pressure inside the box is reduced, further, the problem that the box door is pushed open due to overhigh air pressure is avoided, therefore, an auxiliary effect is achieved for the box door closing operation, thus the box door is closed easily, and time and labor are saved.

The invention discloses a device and method for excrement innocent treatment and recycling utilization. The device comprises a crushing and conveying roller, an electric motor, a sealing cover, a control panel, an overflow port, fixing support legs and a sealing ring. The upper end of the crushing and conveying roller is provided a feeding port. An overflow port is connected to the interior of a fermentation chamber through an overflow pipe. A leakproof membrane is arranged in the fermentation chamber. The excrement source innocent eco-friendly treatment device is provided with the crushing and conveying roller at an inlet so that excrement is crushed before entering the device and then is fed into the fermentation chamber through a feeding pipe and thus an excrement contact area is increased, a treatment rate is improved and device blocking is avoided. Through use of a biological strain, the device has good treatment effects on excrement. Through use of the fixing support legs, the device can be conveniently fixed. The leakproof membrane is arranged in the fermentation chamber so that device durability is improved.

The invention discloses a hydrogen cell vacuum pipeline traffic vehicle. A vehicle suspension device is arranged on the outer side of a vehicle, an air compressor is arranged at the front end of the vehicle, the air compressor is connected with an air bottle, the air bottle is connected with the inlet of an air purifier through a pressure regulator, after air is purified in the air purifier, one part of the air enters a passenger compartment of the vehicle through a pipeline for the breathing use of passengers in the vehicle, and the other part of the air enters a hydrogen cell through the airinlet of the hydrogen cell by an injector, the hydrogen inlet of the hydrogen cell is connected with the air outlet of the air bottle, a water-gas mixture from the water outlet of the hydrogen cell is separated by a separator, separated water enters a water tank through the pipeline, separated air enters the air inlet of the hydrogen cell again through an air circulation pump, and separated hydrogen enters the hydrogen inlet of the hydrogen cell again through a hydrogen circulation pump. According to the hydrogen cell vacuum pipeline traffic vehicle, clean energy is advantageously promoted, the utilization efficiency of equipment is improved, and the operation cost is lowered.

The invention discloses a storage safety device for volatile liquid, and relates to the technical field of volatile liquid storage. The device comprises a tank body, a base and a fixed seat; a condensation recovery chamber is arranged in the base; a pressure relief chamber is arranged in the fixed seat; a third through hole and a fourth through hole are respectively formed in the bottom of the pressure relief chamber; a peripheral side surface of the third through hole is fixedly connected with a pressure relief pipe; a plurality of breather pipes are mounted close to the top of the peripheralside of the tank body; one end of each breather pipe penetrates through the peripheral side of the pressure relief pipe; a third spring is mounted at one end, away from the tank body, in the breatherpipe; and one end of the third spring is fixedly connected with a sliding block. Through the design of the third spring, the sliding block, the pressure relief pipe and the pressure relief chamber, automatic pressure control can be achieved, the structure is simple, and safety is high; through the design of a refrigeration control box, a spiral condensation pipe and the condensation recovery chamber, gas liquefaction can be achieved, the temperature in a spiral condensation pipe is reduced, the tank body is effectively cooled, liquid volatilization is reduced, and the safety is high.

The invention discloses an air conditioning structure for rail traffic and the rail traffic. The structure includes an air conditioner body, a first heat exchanger component and a second heat exchanger component, and the first heat exchanger component and the second heat exchanger component are arranged in the air conditioner body. The air conditioner body includes a fairing hood and a bottom plate; the front end of the fairing hood is provided with an air inlet, the rear end of the fairing hood is provided with an air vent, the side face of the fairing hood is provided with a first air outlet, and the bottom plate is provided with a return air inlet and a second air outlet. The first heat exchanger component includes a first heat exchange air duct, the air inlet is communicated with the first air outlet through the first heat exchange air duct, the second heat exchanger component includes second heat exchange air ducts, and the second heat exchange air ducts are communicated with thereturn air outlet and the second air outlet in sequence; the second heat exchange air ducts and the first heat exchange air duct are separated, and a decompression passage is arranged in the air conditioner body and communicated with the first heat exchange air duct and the air vent; in the horizontal direction of a carriage, the second heat exchange air ducts are arranged on the left side and right side of the decompression passage. The air conditioning structure for the rail traffic saves space, air supply resistance can be reduced, and the heat exchange effect is improved.

The invention discloses a dust-proof handheld tube polishing machine. A limiting component is arranged in the middle of handheld polishing machine body; the middles of guide rods are connected with baffle plates in a sleeving manner; the middles of mounting rods are connected with second positioning rings in the sleeving manner; the top ends of fixed supporting rods and movable supporting rods areconnected with casters through rotating shafts; a dust-proof component is mounted at the top end of a dust blocking cover; cloth bag rings are embedded into the two ends of a rubber tube; an air suction pipe is arranged in the middle of the rubber tube; before polishing is performed by the dust-proof handheld tube polishing machine, the distance between the two baffle plates is adjusted, then theincluded angle between the movable supporting rod and the fixed supporting rod is regulated, and the casters roll on the ground, so that the grinding angle and height are easy to control; the grinding effect is better; before the polishing is performed and when the polishing is performed, a vacuum pump is started to extract the air in the rubber tube; the internal air pressure is reduced; impurities and dust are sucked into a conical cloth bag and are blocked by the conical cloth bag, so that the dust is removed; a dust-proof effect is good; and the cloth bag rings are taken out, and the conical cloth bag is emptied, so that the conical cloth bag is cleaned quickly and conveniently.

The invention discloses a steel-plastic conversion part air tightness detection device. Supports are symmetrically arranged above two sides of a pool and with the center line of the pool as a symmetric axis; a piston cylinder is fixedly connected onto the support, a piston rod of the piston cylinder extends out downwardly, and the tail end of the piston rod is fixedly connected with a sealing block; the pool is internally provided with a V-type plate for fixing the steel-plastic conversion part, the support is parallel with one corresponding side of the V-type plate or in the same plane, air holes are arranged on one surface, facing the pool, of the sealing block, and the air holes are connected with an air port of the steel-plastic conversion part; and a test air pipe is connected onto the sealing block, one end of the test air pipe is communicated with the air hole through an inner pipeline of the sealing block, and the other end of the test air pipe and the piston cylinder are connected with an air source respectively. Both a straight steel-plastic conversion part and a bent steel-plastic conversion part can be tested, the test is convenient and quick, the test efficiency is improved, and the labor time is saved.

The invention relates to the technical field of high-efficiency energy-saving industry, and discloses a high-temperature damage prevention street lamp mounting base based on high efficiency and energy conservation, which comprises a fixed box, the left side of the fixed box is fixedly connected with a first fixed cylinder, and the outer wall of the left side of the first fixed cylinder is fixedly connected with a first connecting rod; and a second fixing cylinder is fixedly connected to the lower end of a first connecting rod, a heightening base is fixedly connected to the upper surface of the fixing box, and a filter screen is embedded and fixed to the upper side of the heightening base. When the street lamp mounting base is used, moisture in the fixing box is not easy to evaporate due to the existence of a separation plate and a siphon, when the street lamp is abnormally high in temperature, gas in an air bag is expanded, a connecting plate is lifted, an insert block is pulled out of a flow limiting mechanism, water in the fixing box flows to the surface of a lampshade to cool the surface, the purpose of independently cooling when the street lamp is abnormally high in temperature is achieved, and the street lamp is not easy to damage, the effect of improving the utilization rate of energy is achieved.

The invention discloses a direct current contactor with a pressure release protection mechanism. The direct current contactor comprises a sealed shell, an inner cavity of the sealed shell is provided with two fixed contacts arranged side by side, a movable moving contact piece, and a vertically-arranged push rod, the push rod can drive the moving contact piece to be respectively connected or disconnected with the two fixed contacts, the outside of the lower portion of the sealed shell is connected with a base shell in a positioning and sleeved manner, the base shell and an outer wall of the lower portion of the sealed shell are encircled to form a sealing chamber, the inner side of the sealing chamber is filled with a gas medium, and the sealing chamber can also communicate with the inner cavity of the sealed shell. Therefore, the arc-extinguishing medium component is maintained invariant, the internal air pressure of the direct current contactor is effectively reduced, the arc is smoothly extinguished, the final switch-off of the direct current contactor is guaranteed, the capability for cutting off an abnormal load by the direct current contactor is improved, the risk of the damage to the direct current contactor under the abnormal load is reduced, and the security of the direct current contactor and a matching apparatus is guaranteed.

The embodiment of the invention provides a bearing and a sealing device. The sealing device is suitable for being arranged between a first part and a second part which rotate relatively, and comprisesa framework which is integrally of an annular structure and is suitable for being in interference fit with the first part, a main sealing lip which is integrally of an annular structure, is fixed tothe framework and is suitable for being in interference contact with the second part, and a first dustproof sealing lip which is integrally of an annular structure, is fixed to the framework, is provided with a first groove and is suitable for being in interference contact with the second part. According to the bearing and the sealing device provided by the embodiment, the sealing performance of the sealing device can be ensured, and oil consumption can be reduced.

The invention discloses bearing neck bush uniform stamping equipment with buffering and damping functions, and relates to the technical field of bearing machining. The bearing neck bush uniform stamping equipment specifically comprises a bottom plate, stamping mechanisms, feeding mechanisms and material receiving mechanisms, a feeding flat plate is fixed to one side of the upper surface of the bottom plate, the stamping mechanisms are fixed to the upper portion of an embedded disc correspondingly, the feeding mechanisms are installed on the feeding flat plate at equal intervals, and the material receiving mechanisms are installed above a material receiving flat plate at equal intervals. According to the bearing neck bush uniform stamping equipment with the buffering and damping functions,the pushing force borne by the bearing neck bush is balanced through a pressure balancing mechanism, air pumped out by an air pump can enter an air bag through an air channel, a telescopic air pipe and two cavities in a sliding column, so that the air bag is inflated and expanded, and the air bag can be correspondingly shrunk after being subjected to compression pressure; and the structural designeffectively compensates the unevenness between a bearing outer ring piece and the bearing neck bush, so that the bearing neck bush can be stably arranged in the bearing outer ring piece, and the stress is uniform.

The invention discloses a plastic container with an air pressure adjusting function, and belongs to the technical field of plastic containers, the plastic container with the air pressure adjusting function comprises a container body, and an air pressure adjusting part is arranged on the container body. Through the arrangement of the air pressure adjusting piece, when the air pressure in the container body is too large, the heat insulation piston plate can automatically slide to the other side of the air guide hole, air in the container body can flow into the air containing box through the air guide hole, and the elastic sealing film protrudes out of the air containing box to deform; therefore, the purpose of reducing the air pressure in the container body can be achieved, the container body is prevented from protruding, deforming or cracking due to the fact that the air pressure is too large, after the temperature is reduced, air flowing out of the container body can flow back, the container body is prevented from sinking inwards, and then the air pressure adjusting function is achieved. The container body can be effectively prevented from being damaged due to air pressure change, and therefore the service life of the container body can be effectively prolonged.