597 results about "Liquid pressure" patented technology

The utility model relates to the technical field of regulating valves, and discloses a self-operated high-pressure-difference regulating valve which comprises a pipeline assembly and a buffer assembly installed in the pipeline assembly, the pipeline assembly is fixedly installed on the two sides of a valve assembly, a transmission assembly is fixedly installed on the valve assembly, a feedback assembly is fixedly installed on the transmission assembly, and when equipment operates, the buffer assembly is fixedly installed on the pipeline assembly. Water flow passes through the water pipe and flows into the valve assembly, in the process, the liquid baffle is driven by high pressure to rotate and deviate inwards along the rotating rod, meanwhile, the liquid baffle is driven to rebound to the original position under the rebound effect of the rebound spring, part abrasion caused by a water hammer is avoided, meanwhile, liquid pressure is conducted to an inner cavity of the piston cylinder through the communicating pipe, and the valve element and the valve rod are driven to be pressed downwards; in the downward pressing process, the through hole in the communicating position of the through groove and the valve element is gradually reduced, and therefore flowing hydraulic pressure is adjusted more smoothly and stably.

The invention relates to the technical field of vehicle-mounted visual perception, in particular to a camera active anti-shake cooling system based on a magnetorheological fluid medium and a control method. The heat dissipation system comprises a camera module, at least three independent pipelines which are arranged around the camera module and are hollow inside, a hydraulic driving unit, at least one electromagnetic coil which is arranged on the outer wall of the independent pipeline and is used for generating a controllable magnetic field, and a controller, the controller is used for cooperatively controlling the liquid pressure in the pipeline and the magnetic field intensity acting on the magnetorheological fluid according to the vehicle state information and / or the posture information of the camera module so as to achieve active anti-shake and heat dissipation of the camera module. The pressure of the cooling liquid in the pipeline is adjusted to support the camera and change the electromagnetic force between the magnetic fluid and the coil by changing the magnetic field intensity, and lens shaking is reduced in cooperation with a vehicle body active shock absorption system.

The invention belongs to the technical field of automobile shock absorber electromagnetic valves, and particularly relates to a hydraulic shock absorber electromagnetic valve for vehicle testing. A backflow channel communicated with an overflow cavity and a pressurizing cavity is arranged on a partition plate, a one-way valve leading to the pressurizing cavity is arranged on the backflow channel, so that oil flowing into the overflow cavity flows back into the pressurizing cavity to react on a pressurizing seat, and the oil in a main liquid cavity needs to have higher pressure when the pressurizing seat is pushed away from a main valve body; and the oil liquid pressure difference between the liquid inlet and the liquid outlet is further increased, the damping force of the oil liquid in the electromagnetic valve is increased, and the vibration reduction performance of the vibration damper is improved. Compared with an electromagnetic valve of a shock absorber in the prior art, when the power-on amount of the electromagnetic coil is certain, the electromagnetic valve provides larger damping force for the vehicle shock absorber; on the contrary, when the damping force needed by the vehicle shock absorber is fixed, the electromagnetic valve consumes less electric energy, the number of times of vehicle charging in the vehicle driving evaluation test process is reduced, the vehicle research and development test efficiency is improved, and electric energy is saved.

The invention discloses an inner circle surface cluster magnetic jet polishing device and method, and belongs to the technical field of polishing equipment.The magneto-rheological polishing and jet polishing are combined, that is, magneto-rheological polishing liquid is jetted out of a liquid outlet of a cluster magnetic jet polishing head at a high speed under the high-pressure effect, efficient jet rough polishing is conducted on the inner circle surface of a workpiece, and the inner circle surface is polished. And meanwhile, under the action of the magnetic field, the magnetorheological polishing liquid is converted into a magnetorheological polishing pad and a flexible clamping abrasive for secondary fine polishing, so that the problems of workpiece deformation and poor surface quality easily caused by traditional honing and polishing are solved, the defect of low efficiency of single magnetorheological polishing is overcome, and the polishing efficiency and the surface quality are improved. Besides, the device can adapt to workpieces with different diameters by replacing cluster magnetic jet polishing heads and workpiece discs with different sizes, and the machining requirements of the workpieces made of different materials are met by matching with adjustable polishing liquid pressure, flow and rotating speed parameters; due to the expanded double-station design, the machining efficiency is improved, and the machining requirements of high-quality inner circle surface parts are met.

The invention provides a lead bonding and packaging device and a lead bonding and packaging method for a key process for packaging a deep cavity lead of an immersion type miniature liquid pressure sensor. The lead bonding packaging equipment comprises a rack, a movement mechanism mounting plate, an X-axis movement mechanism, a Y-axis movement mechanism, a first Z-axis movement mechanism and a second Z-axis movement mechanism, the movement mechanism mounting plate, the X-axis movement mechanism, the Y-axis movement mechanism, the first Z-axis movement mechanism and the second Z-axis movement mechanism are all mounted on the rack, a clamping mechanism is mounted on the X-axis movement mechanism or the Y-axis movement mechanism, and a visual microscopic mechanism is mounted on the first Z-axis movement mechanism. And a chopper positioning mechanism is mounted on the second Z-axis movement mechanism. According to the technical scheme provided by the invention, the alignment accuracy and stability in the wire leading process can be ensured, the yield and consistency of deep cavity bonding are improved, manual intervention and operation errors are reduced, automation of the wire bonding process is realized, the bonding precision and stability are improved, and the method has relatively high practicability and popularization value.

The invention discloses a valve assembly and a spaceflight propulsion system with the valve assembly, the valve assembly comprises a valve body, a valve core assembly and a reset piece, a mounting cavity, an inlet flow channel and an outlet flow channel are formed in the valve body, the inlet flow channel and the outlet flow channel are respectively communicated with the mounting cavity, and an inlet and an outlet which are respectively communicated with the inlet flow channel and the outlet flow channel are formed in the valve body; the valve element assembly is movably arranged in the mounting cavity, and the valve element assembly moves under the action of liquid pressure of the inlet flow channel so as to selectively connect or disconnect the inlet flow channel and the outlet flow channel; the reset piece is arranged between the valve element assembly and the inner wall of the mounting cavity so as to drive the valve element assembly to reset. Wherein a balance cavity is further defined between the valve element assembly and the mounting cavity, and a throttling channel for communicating the inlet flow channel with the balance cavity is formed in the valve element assembly. According to the valve assembly, the throttling channel is arranged, so that the buffering effect on liquid impact is achieved, and the valve assembly shows excellent reliability and durability under the high-pressure and high-frequency working conditions of an aerospace propulsion system and the like.

Pure liquid nitrogen, liquid air or dirty liquid nitrogen generated by a rectifying tower of the air separation device is subjected to secondary pressurization through a hydraulic pump and then enters a main heat exchanger or a recooling device to recover cold energy, and high-pressure gas formed by heat absorption and gasification enters a high-pressure expansion machine to expand and do work; exhaust gas of the high-pressure expansion machine enters the rectifying tower to provide cold energy required by air separation, and pure nitrogen, waste nitrogen and pure oxygen which are discharged from the rectifying tower and are subjected to cold energy recovery through the main heat exchanger are output. The purposes of energy conservation and consumption reduction of the air separation device are achieved through the processes of primary pressurization of the compressor, secondary pressurization of the hydraulic pump, cold returning, gasification and expansion.

The utility model discloses a magnetic field liquid pressure difference sealing performance-rheological property synchronous measurement system which comprises a rheometer main body, a sealing rotor structure, a pneumatic pressurizing device, a temperature control and measurement device and a computer measurement and control device, the pneumatic pressurizing device comprises a constant pressure pump and a gas storage bottle, and is connected with the sealing rotor structure through a vent hole in the shell; the temperature control and measurement device comprises a temperature controller and a temperature control execution module which is arranged on the side wall of an outer cylinder at one end, close to the magnetic liquid area, of the magnetic function unit; the computer measurement and control device is connected with the optical encoder, the pressure sensor, the temperature controller and the torque control type motor. The system can simulate and test the sealing effect and rheological property of the magnetic liquid in a static state and a dynamic state, explores the actual influence of the magnetic liquid on the sealing property when the magnetic liquid flows, and supports the rheological test under the condition of multi-field coupling of a flow field, a magnetic field and a temperature field.

The utility model belongs to the technical field of gas compression devices, and provides a compressor blow-down device and a compressor, the compressor blow-down device comprises a liquid inlet pipe, a liquid outlet pipe and a blow-down pipe, the liquid inlet end of the liquid inlet pipe is in threaded connection with the blow-down pipe of the compressor; the pressure reduction assembly is provided with a liquid inlet and a liquid outlet, the liquid inlet of the pressure reduction assembly is connected with the liquid outlet end of the liquid inlet pipe, and the pressure reduction assembly is used for reducing the pressure of liquid; the liquid inlet end of the liquid outlet pipe is connected with the liquid outlet of the pressure reduction assembly. The compressor blowdown device and the compressor are simple in structure, reasonable in design and low in liquid pressure and flow speed during blowdown.

The utility model discloses a gear pump with pressure relief protection, which comprises a pump body comprising an upper pump body, a lower pump body and a middle body arranged between the upper pump body and the lower pump body; a containing cavity communicated with the upper pump body and the lower pump body is formed in the middle body. A first pressure relief channel and a second pressure relief channel which communicate with the containing cavity are formed in the upper pump body. An inflow channel and an outflow channel which are communicated with the containing cavity are formed in the lower pump body; the gear set comprises a driving gear and a driven gear which are meshed with each other, and is arranged in the accommodating cavity; the driving motor is in transmission connection with the driving gear through a coupler; and the one-way pressure relief assembly is arranged in the upper pump body, and when the pressure of the outflow channel exceeds a threshold value, the one-way pressure relief assembly is driven by the liquid pressure of the second pressure relief channel to be opened, so that the second pressure relief channel and the first pressure relief channel form a backflow channel, and the overpressure liquid is directionally released to the containing cavity. The technical problem that in the prior art, when the pressure of an oil inlet cavity exceeds a preset value, a shell is prone to burst is solved.

The invention relates to the technical field of sweet potato leaf extraction, in particular to a system and method for obtaining sweet potato leaf extract from sweet potato leaves, the system comprises a bottom plate, a charging barrel capable of generating high pressure inside and a target barrel, the charging barrel and the target barrel are installed on the bottom plate, a top ring is fixedly connected between the charging barrel and the target barrel, and the bottom end of the top ring is fixedly connected with an extraction chamber; the inner side of the extraction chamber is slidably connected with a piston part, two sides of the top end of the extraction chamber are communicated with jet pipes, the two jet pipes are respectively communicated with an outflow pipe and a suction pipe, an outlet of the outflow pipe extends into the target cylinder, and the interior of each jet pipe is of a microporous structure and is used for realizing rapid change of feed liquid pressure and increasing turbulent flow; the reduction of the liquid level and the pressure in the barrel can influence the diameter of bubbles in the charging barrel, so that the extraction and separation effect is influenced, the size of the bubbles can be ensured to be within a stable range, and the mixing and extraction effect is ensured.

The invention discloses a liquid filling and laser shock composite forming system and method. The liquid filling and laser shock composite forming system comprises a laser emitting device, a liquid filling device and a workpiece platform. The workpiece platform comprises a base, a workbench is arranged on the base, and an adjustable clamp is arranged on the side edge of the workbench and used for clamping a workpiece to be formed. Sealing devices are arranged at the two ends of the workbench correspondingly and used for sealing the two ends of a to-be-formed workpiece. The sealing device is connected with the liquid filling device through a pipeline, and the liquid filling device is used for filling a cavity of a to-be-formed workpiece communicated with the sealing device with liquid with set pressure; the laser emitting device is used for emitting laser to the workpiece to be formed, the distance between a laser shock point and a preset reference datum plane is detected in real time through the laser range finder, the distance is compared with a set distance, and the position of the workbench is adjusted according to distance deviation. The optimal liquid pressure can be quickly and accurately obtained, and the problem that the liquid pressure is difficult to accurately determine in the prior art is solved.

The present application relates to the technical field of marine engineering geology research, and particularly relates to a deep-sea cold spring system methane gas release simulation device and method based on PIV. The device comprises a stable pressure gas supply module, a simulation reaction module, a control collection module and a visual and PIV synchronous observation module. The stable pressure gas supply module comprises a bubble generation reaction kettle and a membrane gas-liquid pressure stabilizing device, and the membrane gas-liquid pressure stabilizing device is connected in parallel on the gas supply pipeline connecting the bubble generation reaction kettle and the simulation reaction module. The simulation reaction module comprises a flexible airbag valve system and a cold spring environment reaction cabin system, and the flexible airbag valve system is located at the air inlet of the cold spring environment reaction cabin system. The control collection module is used for controlling the bubble generation and directional release, and the visual and PIV synchronous observation module is located outside the cold spring environment reaction cabin system. The device can synchronously obtain the flow field structure, hydrate generation process, and inversion vorticity, shear rate, turbulence statistics, pressure field and acceleration, and provide a reliable experimental platform for revealing the bubble-hydrate-fluid coupling mechanism in the cold spring environment.

The present invention discloses a device and method for testing the gas loss amount which simulates a wireline coring process, and belongs to the field of petroleum engineering. The device includes: a programmable temperature control thermostat for simulating temperature changes in a wireline coring process, a simulated center pipe body for constructing a simulated environment of the center pipe body being filled with drilling fluid or clean water, a simulated coring barrel for drilling for and retaining a core sample, a gas injection control and recovery device, a liquid injection control and recovery device, and a drainage and gas collection meter. The present invention has advantages as follows: it is simple to implement and can reproduce a real drilling and coring process to a certain extent; the simulation of the coordinated changes in liquid pressure and temperature environment experienced by the core sample lifted to a wellhead from a drilling bottom hole through the programmable temperature control thermostat and a program-controlled constant pressure valve, can truly reproduce the environmental conditions of a wireline coring barrel being filled with drilling fluid and the loss changes in gas content of the core sample with the coordinated descents in liquid-phase pressure and temperature in the liquid-phase filling environment in the core lift process.

The present application relates to a kind of pressure measuring anti-pulling pipe sealing joint and its anti-pulling sealing method, it includes main joint, secondary joint, and the pipe clamp sealing assembly in the inner cavity formed by main joint and secondary joint, pipe clamp sealing assembly includes first sliding sleeve, second sliding sleeve, variable-diameter clamp cover, first sliding sleeve, second sliding sleeve, variable-diameter clamp cover three are mutually abutted when main joint and secondary joint are screwed and connected, first sliding sleeve forms preliminary sealing with pipe by annular sealing ring, variable-diameter clamp cover forms preliminary clamping to pipe;When gas-liquid is introduced into main joint, axial thrust in the direction of pipe pulling off is formed to pipe by gas-liquid pressure, and first sliding sleeve, second sliding sleeve, variable-diameter clamp cover three are further mutually abutted by gas-liquid pressure, corresponding annular sealing ring is further deformed, variable-diameter clamp cover is further shrunk and clamped, and the blade of variable-diameter clamp cover cooperates with the axial thrust of pipe and forms oblique cutting, realizes effective anti-backout anti-pulling structure, and with the increase of the pressure in pipe, the sealing property and anti-backout anti-pulling performance of pipe are self-adaptively improved.

The utility model discloses an on-line safety valve mounting force measuring device for engine oil pump assembly, and particularly relates to the technical field of engine oil pump assembly. The clamp assembly is installed on the base plate in a sliding mode, and a servo module for driving the clamp assembly to move is arranged on the base plate; the force measuring assembly is mounted at the bottom of the substrate, and the force measuring assembly comprises an electric cylinder, a pressure sensor and a testing head; and the pressing head assembly is installed on the machine frame and comprises a gas-liquid pressure cylinder and a second air cylinder, the output end of the gas-liquid pressure cylinder is connected with a pressing rod and a visual sensor, and the output end of the second air cylinder is connected with a pressing head. According to the utility model, accurate assembly and force measurement detection of the safety valve are realized, the detection efficiency and quality are greatly improved, and the reliability and detection efficiency of assembly of the engine oil pump safety valve are remarkably improved.

A liquid ejection apparatus includes a nozzle, a pressure chamber, a piezoelectric element, a count processing portion, and a detection processing portion. The nozzle ejects a liquid. The pressure chamber communicates with the nozzle and contains the liquid. The piezoelectric element changes a pressure in the pressure chamber in response to an input of a drive signal. The count processing portion counts a number of times that an electric signal output from the piezoelectric element and corresponding to vibration generated in the pressure chamber in response to the input of the drive signal to the piezoelectric element exceeds a predetermined threshold value. The detection processing portion detects a viscosity of the liquid contained in the pressure chamber, based on a count result of the count processing portion.

1. The name of the design product: aquarium pump. 2. The use of the design product: for conveying liquid or boosting liquid pressure. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

The anti-backflow mocha pot comprises an upper cavity used for containing coffee liquid, an elastic overflowing plate is arranged at the bottom of the upper cavity, an overflowing channel communicating the upper cavity with the exterior of the upper cavity is formed in the overflowing plate, the overflowing channel is closed in a normal state, and when the liquid pressure reaches a preset threshold value, the overflowing channel is closed. And the overflowing plate is elastically deformed to open the overflowing channel, so that liquid is allowed to pass through. In the forward flowing stage, when the liquid flows from bottom to top and the overflowing plate is pushed by liquid pressure to reach a preset threshold value, the overflowing channel is automatically opened, and the liquid smoothly flows into the upper kettle body. In the backflow prevention stage, after the liquid enters the upper kettle body, the pressure acting on the upper portion of the overflowing plate only comes from water pressure generated by the gravity of the liquid, the pressure value is lower than the opening threshold value of the overflowing channel or reversely extrudes the outlet of the overflowing channel, and therefore the overflowing channel is kept in the closed state. By means of the design, liquid backflow prevention is achieved, and meanwhile space occupation and liquid residues on the overflowing plate are reduced.

This application relates to a method, system, and storage medium for airtightness testing of a diaphragm accumulator, relating to the field of accumulator technology. The method includes acquiring preparation completion trigger information of the diaphragm accumulator; acquiring test plan information of the diaphragm accumulator based on the preparation completion trigger information; controlling a preset hydraulic system to perform a liquid filling test on the diaphragm accumulator according to the test plan information to determine pressure detection information; analyzing the pressure detection information and the test plan information to determine the liquid pressure information of the hydraulic system; determining whether the pressure detection information meets the requirements of the liquid pressure information; if it does not meet the requirements, issuing a warning according to a preset non-compliance warning message; if it meets the requirements, issuing a warning according to a preset compliance warning message. This application improves the accuracy of airtightness testing of diaphragm accumulators.

The present disclosure relates to a backwashable water distributor. The backwashable water distributor comprises an outer sleeve, a central passage, a backwash passage and a movable orifice plate assembly. When the backwashable water distributor is used as a normal downhole water injection tool, the movable orifice plate assembly is in a closed state, and fluid flows out through the movable orifice plate assembly. When the downhole water injection tool needs to be backwashed, the movable orifice plate assembly is opened by the reverse fluid, and the dirt and large impurities inside the flow passage are washed out of the water distributor. After backwashing is completed, the movable orifice plate assembly returns to the initial position under the action of the spring and the liquid pressure, and the water distributor can be normally water injected and flow detected.

This liquid discharger includes a body part capable of pressure-feeding a liquid contained in a container body, and a liquid discharge nozzle for discharging the liquid pressure-fed by the body part. The liquid discharge nozzle has a front wall part provided on a discharge direction side of the liquid discharge nozzle, and a discharge port formed in the front wall part and capable of discharging the liquid. The front wall part has a front surface facing the discharge direction side and a rear surface facing the direction opposite to the discharge direction. The discharge port is formed in a long shape having a major axis and a minor axis, and is provided so as to penetrate from the front surface to the rear surface of the front wall part. In the inner peripheral wall of the discharge port, at least both end parts of the major axis are formed in parallel with the penetration direction of the discharge port, and at least a part of the rear surface of the front wall part constitutes an inclined surface inclined toward the discharge port.

The utility model relates to the technical field of liquid tank end socket reinforcing ribs, solves the technical problem of liquid leakage after long-time use caused by excessive welding spots between an end socket and a reinforcing rib, and particularly relates to an end socket reinforcing rib structure which comprises an end socket plate serving as a supporting foundation, one end of the end sealing plate is connected with a welding spot connecting assembly for separating welding spots between the end sealing plate and the reinforcing ribs, the welding spot connecting assembly comprises four connecting bases which are fixedly connected to one end of the end sealing plate at equal intervals, the middle of the end of each connecting base is fixedly connected with a positioning rod, and the outer side of each connecting base is sleeved with a connecting plate. Due to the arrangement of the welding spot connecting assembly, welding between the reinforcing ribs and the end socket can be avoided, so that the possibility that the welding position of the end socket of the tank body is broken is avoided, the end socket can disperse force to the cylinder body under the action of liquid pressure in the tank in the running process of a vehicle, stability is improved, and the risk of cracking is reduced.

The utility model relates to the technical field of fragrance machines, in particular to a fragrance machine. An atomizing head assembly is arranged in the fragrance machine and comprises a liquid guide core rod, an atomizing sheet, an atomizing seat, a sleeve and a pressure relief mechanism. The atomization base is connected with the bottle body, a liquid accumulation space is formed in the atomization base, and the atomization base communicates with the containing cavity through a pressure relief mechanism. The sleeve is located in the atomization base, and the shell is provided with a mist outlet facing the atomization piece. The liquid guide core rod is inserted into the sleeve, one end of the liquid guide core rod is communicated with the liquid accumulation space, and the other end of the liquid guide core rod is connected with the atomization piece, so that liquid perfume in the liquid accumulation space drifts away from the mist outlet after being atomized. The liquid accumulation space and the sleeve are arranged, and the liquid guide core rod is inserted into the sleeve, so that the liquid pressure on the surface of the liquid guide core rod is reduced, and leakage of liquid perfume is reduced. Meanwhile, the containing cavity is communicated with the liquid accumulation space through the pressure relief mechanism, it is guaranteed that the liquid pressure in the liquid accumulation space is reduced, and the liquid perfume is further prevented from leaking out of the mist outlet.

The utility model discloses an automatic unloading system for liquid carbon dioxide, which is simple and novel in operation method and convenient to operate. According to the automatic unloading system, a gas-phase hose is connected with a gas-phase pipe section of a ship filling station and a gas return pipe of a wharf / transport ship filling station; a liquid-phase hose is connected with a liquid-phase pipe section of a ship filling station and a CO2 injection pipe of a wharf / transport ship filling station, and unloading is completed by generating power through the pressure difference between CO2 liquid in a ship CO2 storage tank and CO2 liquid in the CO2 storage tank. Meanwhile, an instrument signal cable and a ship-shore communication system collect and input ship unloading information and wharf injection information into a ship central control system, and after the ship unloading information and the wharf injection information are processed by the central control system, instructions are sent to corresponding control valves, and automatic control is achieved. Compared with the prior art, installation of a CO2 liquid pump or an immersed pump, a CO2 gas generator and corollary equipment and pipelines thereof is omitted, and cost is saved.

The invention relates to a refueling receptacle (50) for an aircraft (10) adapted for in-flight refueling, the receptacle being configured to be fluidically connected to a line (54) of the aircraft intended to receive fluid from another aircraft, referred to as the refueling aircraft (12), the receptacle (50) comprising a connection device (60) configured to connect the aircraft line (54) with a boom (18) of the refueling aircraft (12), the connection device comprising a mechanical coupling system (62) configured to couple the aircraft line (54) with the boom (18), the receptacle being characterized in that the connection device comprises a pressure regulator (66) arranged downstream of the mechanical coupling system (62) and configured to limit the pressure of the fluid from the refueling aircraft below a maximum value. Figure 2

The invention relates to the technical field of ultrasonic measuring instrument measurement, in particular to an integrated non-contact method for measuring the pressure and flow of liquid in a pipeline and an ultrasonic measuring instrument, and the method comprises the following steps: controlling a pair of ultrasonic transducers to transmit and receive ultrasonic waves, and collecting two actual receiving signals in the downstream direction and the countercurrent direction under the current working condition; processing the two actually received signals, and adaptively selecting a calculation mode based on the first calibration signal and the second calibration signal; based on the selected calculation mode, the real-time flow velocity value of the fluid is obtained through calculation according to the target difference between the two actual receiving signals, and the target difference comprises the time difference or the frequency difference; and calculating the real-time pressure value of the fluid based on the real-time flow velocity value and the acoustic characteristics of the actually received signal. The method has the beneficial effects that the measurement precision and reliability under a complex working condition are improved, the dependence on prior parameters is reduced, and meanwhile, the application limitation in small-pipe-diameter, low-flow-speed and special fluid measurement is overcome.

The application discloses a heat dissipation device of a marine wind power oil-immersed transformer, wherein a transformer body, a cooling box and an oil storage tank are circularly communicated, a condensing pipe is installed in the cooling box and has an extension section extending to the outside of the cooling box; the condensing pipe is filled with condensate, and a one-way valve is further installed in the condensing pipe; the one-way valve comprises a valve body, a first valve piece and a second valve piece; the valve body is provided with a first valve cavity communicated with the condensing pipe and a second valve cavity communicated with the extension section; a communication port is arranged between the first valve cavity and the second valve cavity; a gas passage is arranged on the outer circumferential wall of the valve body, and the gas passage is used for allowing the gas generated by the condensate in the condensing pipe to flow towards the extension section; the first valve piece can be moved to close the communication port under the pressure of the gas generated by the condensate in the condensing pipe, or the first valve piece can be moved to open the communication port under the pressure of the liquid generated by the gas in the extension section, so that the high-temperature insulating oil in the cooling box can be cooled more efficiently.

The utility model provides a buffer. The buffer comprises a cylinder body, a piston and a ball body, a liquid cavity used for containing viscous liquid is formed in the cylinder body. The piston is arranged in the liquid cavity in a sliding manner; the piston divides the liquid cavity into a pressure cavity and a non-pressure cavity; a passage communicated with the pressure cavity and the non-pressure cavity is arranged in the piston; the passage is provided with a ball seat structure on one side of the pressure cavity, and the ball body is movably arranged in the pressure cavity and is matched with the ball seat structure to open and close the passage or adjust the flow speed and flow of the viscous liquid passing through the passage by adjusting the size of the cross section of the passage at the ball seat structure. According to the utility model, the structure is more compact, and the extruded area of the elastic air bag is larger, so that the contraction ratio is larger under the same liquid pressure, and the adjusting capability is greatly improved.

The utility model belongs to the technical field of medical equipment, and particularly relates to pressurizing atomization equipment which comprises an elastic braided hose used for being connected with a spray head and a peristaltic pump used for increasing the pressure of liquid in the elastic braided hose, and the pressure resistance value of the elastic braided hose does not exceed 2.07 MPa. Compared with an existing high-pressure atomization treatment mode, the high-pressure atomization treatment device is more suitable for carrying out atomization treatment on conventional general tumors, higher in safety, lower in requirement for consumables and beneficial to saving cost.