83results about How to "Control pressure" patented technology

The embodiment of the invention provides a control method of an oxygen generation system and an adjustable oxygen generation system, and belongs to the technical field of medical instruments. The control method of the oxygen generation system comprises the steps that 1, the threshold value interval of a pulse rate normal value and the threshold value of an oxyhemoglobin saturation normal value are obtained; 2, receiving a pulse rate monitoring value and a blood oxygen saturation monitoring value of a user of the oxygen generation system; 3, according to the threshold value interval, the threshold value, the received pulse rate monitoring value and the received oxyhemoglobin saturation monitoring value, the oxygen output quantity of the oxygen generation system is controlled, and the oxygen output quantity is the oxygen generation pressure and / or the oxygen output rate. According to the method, the performance parameters of the oxygenerator can be timely and automatically adjusted according to the physiological parameter change of the user of the oxygenerator, so that the requirements of the user at the current moment are met.

The invention provides an electric overflow valve and a pressure control method thereof.The electric overflow valve comprises a valve body assembly, an energy accumulator and a pressure regulating assembly, a valve cavity allowing a valve element to reciprocate is formed in the valve body assembly, a liquid inlet and a liquid return opening are formed in the valve cavity, and the valve element divides the valve cavity into a first cavity and a second cavity; the valve core reciprocates to realize different opening degrees; an energy storage cavity is formed in the energy accumulator, the pressure adjusting assembly comprises a driving device, a control part and a pressure adjusting part, the driving device is connected with the pressure adjusting part, at least one part of the pressure adjusting part is in threaded connection with the valve body assembly, one end of the pressure adjusting part communicates with the first cavity and is used for changing the pressure in the first cavity, and the control part is in signal connection with the driving device. The control device can control the driving device to move so as to maintain the pressure in the first cavity within a preset range; therefore, the pressure signal is used as an input signal to control the driving device to drive the pressure regulating part to rotate, accurate pressure control is achieved, and remote programmed pressure regulation of the overflow valve is completed.

The utility model relates to an electromagnetic pulse valve, which belongs to the technical field of electromagnetic valves and comprises a valve body and a valve cover, the valve body is fixedly connected with the valve cover, a diaphragm is arranged at the joint of the valve body and the valve cover, a positioning device is further arranged on one side of the diaphragm close to the valve cover, and the positioning device is arranged on one side of the diaphragm close to the valve cover. The diaphragm is connected with the positioning column, when the diaphragm is opened and closed, the positioning column slides in the sliding groove, the limiting block arranged on one side of the sliding groove is matched with the clamping groove formed in the positioning column, the opening degree of the diaphragm can be accurately controlled, and the flow and pressure of gas in the electromagnetic pulse valve are further controlled.

The invention relates to 3D micro-fluidic printing equipment which comprises a base, a supporting seat and a supporting arm are installed on the upper surface of the base, a bottom plate used for containing a printed product is arranged on the upper surface of the supporting seat, a spray head support is movably arranged on the front side of the supporting arm, and a 3D micro-fluidic printing spray head is fixedly connected to the bottom end of the spray head support. And a boss is arranged on the front side of the 3D micro-fluidic chip. According to the invention, gas and a material are respectively introduced into the 3D micro-fluidic chip through the inlet A and the inlet B, and after the gas and the material in the bubble generation layer are converged, the material containing a large number of bubbles is generated and is used for printing the porous piezoelectric gel; by adjusting the depths of bolts in a continuous-phase threaded hole A, a continuous-phase threaded hole B, a continuous-phase threaded hole C, a continuous-phase threaded hole D, a dispersed-phase threaded hole A, a dispersed-phase threaded hole B, a dispersed-phase threaded hole C and a dispersed-phase threaded hole D, the pressure of gas and the flow of materials are controlled, and porous piezoelectric gels with different porosities can be prepared. And the piezoelectric material has different piezoelectric properties.

The invention discloses a vacuum system for precisely controlling the gas density of a nano-dose detector, and belongs to the field of ionizing radiation nano-dose measurement. The system comprises a vacuum pump set unit, a vacuum degree detection unit and a logic control unit. According to the requirements of the nano dose detector for the vacuum degree and the gas concentration, the working air pressure is within 1 Torr and the air pressure control precision reaches 0.01 Torr through cooperation of a pump set in a vacuum system and PLC logic control and data monitoring. The system can provide gas for generating ionizing radiation and a low-vacuum environment for the nano-dose detector, and ensures that a measurement signal of the nano-dose detector is accurate and stable. The ionization degree of the nano dose detector depends on the vacuum degree in the cavity, and the vacuum degree of the cavity depends on the concentration of gas in the sensitive volume. The method has the advantages of high precision, high accuracy, high reliability and the like. According to the invention, the vacuum environment of the nano-dose detector is constant, the sensitive gas is single, and the precise measurement of the nano-dose detector can be supported.

The utility model relates to the technical field of thermal management of vehicles, in particular to a thermal management system of a vehicle and the vehicle, and aims to solve the problem that the heating capacity of a thermal management system of an existing new energy vehicle is insufficient in a low-temperature environment. Therefore, the heat management system comprises a compressor, an air conditioning box assembly and a gas-liquid separator, the two ends of the air conditioning box assembly are communicated with an exhaust port of the compressor and an inlet of the gas-liquid separator respectively, an outlet of the gas-liquid separator is communicated with an air return port of the compressor, and the heat management system further comprises a circulating pipe connected with the air conditioning box assembly in parallel. By arranging the circulating pipe, the compressor and the gas-liquid separator form a self-circulation heating loop, so that the compressor can cyclically compress a refrigerant in the self-circulation heating loop, the compression density and the compression temperature of the refrigerant are improved, the flow and the temperature of the refrigerant entering the air conditioning box assembly are improved, and the service life of the air conditioning box assembly is prolonged. The heating capacity of the thermal management system of the vehicle in the low-temperature environment is improved, and the use experience of a user is improved.

The invention discloses a cooling system for a fuel cell and a control method of the cooling system, and the cooling system comprises: a material storage box for storing a heat exchange medium; the first medium flow path is communicated with the material storage box and is also suitable for being communicated with a cell inlet of the fuel cell, and the first medium flow path is provided with a driving pump; the second medium flow path is communicated with the material storage box and is also suitable for being communicated with a cell outlet of the fuel cell, and the second medium flow path is provided with a pressure regulating valve; and the bypass flow path is connected between the first medium flow path and the second medium flow path and is provided with a flow regulating valve. Therefore, the pressure in the cooling system can be controlled by controlling the opening degree of the flow regulating valve on the bypass flow path, controlling the flow of the heat exchange medium flowing into the fuel cell and controlling the pressure regulating valve on the second medium flow path, so that the flow and the pressure in the cooling system are controlled together.

The utility model discloses a biogas purifying, absorbing and filtering device which comprises a filtering tank, a hydraulic cylinder is installed on the lower portion of the inner side of the filtering tank, a hydraulic rod is installed above the hydraulic cylinder, a movable plate is movably connected above the hydraulic rod, a filter element is installed above the movable plate, a partition plate is fixed above the filter element, and the partition plate is connected with the hydraulic cylinder. An air inlet pipe is installed on one side of the filtering tank, a first fixing disc is installed on one side of the air inlet pipe, and the outer side of the first fixing disc is sleeved with a hoop; according to the biogas purifying, absorbing and filtering device, the hoop, the sealing ring and the first bolt are arranged, the hoop is fixed to the outer side of the sealing ring through the first bolt in the using process of the device, the sealing ring seals the connecting position of the biogas inlet pipe, and biogas can be effectively prevented from leaking outwards; safety accidents such as poisoning can be caused by biogas leakage, safety hazards to workers are reduced, and biogas leakage is prevented so that production safety can be guaranteed.

The invention discloses similar test block forming equipment for a roadway similar simulation experiment and a manufacturing method. The similar test block forming equipment comprises a lower forming die, and an upper pressurizing die for pressurizing and forming a similar material in the lower die at a constant pressure is arranged above the lower forming die; and the pressurizing upper die is connected with a pressurizing control device for setting a critical pressure value during pressurizing according to mechanical parameters of the standard test block and setting a critical position to control the pressurizing upper die to move and pressurize. According to the forming equipment, similar materials are pressed and formed into required similar test blocks through the pressurizing upper die capable of providing constant pressure, so that the large mechanical property difference of the similar test blocks caused by inconsistent manual tamping mode and tamping force in the similar test block manufacturing process is avoided; therefore, the reliability and the accuracy of the experimental result of the similar simulation experiment are improved.

The utility model provides a temperature regulating system of a compressed air energy storage chamber, which comprises an artificial chamber horizontally arranged underground, a vertical shaft arranged at the top of the artificial chamber, an air circulating pipeline and a water pipeline, the air circulating pipeline and the water pipeline are arranged in the artificial chamber, and an air inlet and an air outlet at two ends of the air circulating pipeline are oppositely arranged along two sides of the artificial chamber respectively. An axial flow fan is arranged in an air inlet of the air circulating pipeline, the water pipeline comprises a water inlet pipeline and a water outlet pipeline, the water inlet pipeline is communicated with a water outlet of the warm water tank and an in-plant circulating cooling water inlet, the water outlet pipeline is communicated with a water inlet of the cold water tank and an in-plant circulating cooling water return port, and a spiral heat exchange pipe is arranged between the water inlet pipeline and the water outlet pipeline. The spiral heat exchange pipe is embedded in the air circulation pipeline behind the axial flow fan and used for exchanging heat with air in the chamber, adjusting the temperature of the air in the artificial chamber during inflation energy storage and deflation energy release, guaranteeing the structural safety of surrounding rock around the artificial chamber and prolonging the service life of sealing materials in the chamber.

The invention relates to the technical field of vehicle control, and provides a clutch oil pre-charging control method and device. The method comprises the steps that the current gearbox oil temperature, the accelerator pedal opening degree and the clutch front and rear end rotating speed difference of a vehicle are obtained; determining an oil pre-charging step target current of the clutch according to the oil temperature of the gearbox, and determining the step maintaining duration of the oil pre-charging step target current according to the opening degree of the accelerator pedal and the oil temperature of the gearbox; according to the oil temperature of the gearbox and the rotating speed difference of the front end and the rear end of the clutch, the target maintaining duration of the pre-charging oil maintaining target current of the clutch is determined, and the pre-charging oil maintaining target current is the current corresponding to the expected pressure of the clutch; and under the condition that clutch oil pre-charging control activation is detected, the clutch is controlled to maintain the step maintaining duration for the oil pre-charging step target current, and the clutch is controlled to maintain the target maintaining duration for the oil pre-charging maintaining target current. According to the invention, the efficiency and smoothness of the whole switching process are improved.

The technical scheme belongs to the field of cutting and slitting machines, and particularly relates to a cutting device of a cutting and winding machine, which comprises a rack, the rack is provided with a cutting mechanism, the cutting mechanism comprises a first knife roll and a second knife roll which are rotatably arranged relative to the rack, the two knife rolls are tangent and matched, and a paper material passes between the first knife roll and the second knife roll; the strip cutting driving part is used for driving the first knife roll to rotate so as to be matched with the second knife roll to cut the paper material into a plurality of material strips; the pressing adjusting assembly comprises an adjusting rod in threaded fit with the first knife roll, the adjusting rod rotates to drive the first knife roll to move relative to the second knife roll, the slitting driving part drives the first knife roll to rotate, and the paper material is continuously cut into material strips when passing through a channel formed by tangency of the first knife roll and the second knife roll; an adjusting rod of the pressing adjusting assembly accurately controls axial displacement of a first knife roll through thread transmission, stepless adjustment of a paper material channel is achieved, the cutting precision is kept, and the adaptability of paper materials of different thicknesses and the equipment maintenance efficiency are improved.

The application discloses a digital oscilloscope variable sampling rate acquisition and storage device, which comprises a data acquisition module, an upper computer, a data preprocessing module and a data cache module. The data acquisition module acquires data and sends the data to the data preprocessing module. The upper computer sets a threshold start position, a threshold end position and a sampling rate increase multiple according to user needs, and sets parameters for the data preprocessing module and the data cache module. According to control signals of the upper computer and the data cache module, the data preprocessing module changes the data extraction multiple, thereby changing the data sampling rate, and sends the data after the extraction to the data cache module. The data cache module caches the data, and sends control signals to the data preprocessing module according to the data cache condition. The application can adopt the variable sampling rate in the same waveform data, so that the user can observe the waveform details without wasting the storage space.

The invention provides a liquid viscosity measuring device and method.The device comprises a measuring container used for containing liquid to be measured, the top face of the measuring container is in a cone shape extending outwards, a closed control cavity is formed in the top end of the measuring container, and the inner diameter of the control cavity is smaller than the diameter of a measuring steel ball; the measuring steel ball is arranged in the measuring container; the rotating mechanism is used for driving the measuring container to rotate by 180 degrees around the horizontal axis of the measuring container, so that the measuring container is switched between an upright state and an inverted state; one end of the control cavity is directly communicated with the interior of the measuring container, the other end of the control cavity is communicated with the interior of the measuring container through a first pipeline provided with a first stop valve, and the other end of the control cavity is further provided with a pressure relief device used for adjusting the internal pressure of the control cavity. According to the invention, the ball falling time can be accurately measured, so that the liquid viscosity measurement precision is improved.

The present invention provides a suction valve, an endoscope unblocking structure, an endoscope handle and an endoscope, and belongs to the technical field of endoscopes. The suction valve includes a valve body and a valve stem, a valve cavity is arranged in the valve body, the valve cavity includes a sealing cavity and a suction cavity connected to each other, the valve body has a negative pressure channel and an atmospheric channel connected to the valve cavity, the valve stem has a blocking end, and the blocking end is movably arranged in the valve cavity; when the blocking end moves in the sealing cavity, the circumferential side wall of the blocking end contacts and cooperates with the circumferential side wall of the sealing cavity, and the blocking end is in a closed position; when the blocking end moves in the suction cavity, there is a gap between the circumferential side wall of the blocking end and the circumferential side wall of the sealing cavity, and the blocking end is in a suction position. The present application sets a sealing cavity with a certain axial length. When the suction valve is installed in the instrument channel and the instrument channel is sealed, the internal pressure of the instrument channel is adjusted by controlling the position of the blocking end in the sealing cavity, so as to push the stones blocking the instrument channel to move and open the instrument channel.

The utility model discloses a dry type granulator for preparing sodium ion particles, which comprises a granulator body, a sodium ion drying box communicated with the inside of the granulator body is fixedly mounted at the top of the granulator body, and a driving motor is fixedly mounted on the front side of the sodium ion drying box. And an output shaft of the driving motor penetrates through and extends into the sodium ion drying box, and a synchronous roller is fixedly connected to the output shaft of the driving motor. According to the utility model, the sodium ion drying box at the top of the granulating machine body is used for realizing segmented drying of sodium ion solution, so that the evaporation rate of moisture and the formation of powder can be better managed, and in the initial stage, the gaps are reserved, so that the moisture can be quickly evaporated, the retention time of the solution at high temperature is reduced, and overheating or sintering can be prevented; in the sealed drying stage, the temperature and the pressure can be controlled more accurately, more uniform and finer powder particles can be formed, the sodium ion powder can enter in an orderly and equivalent mode through the multiple sets of bent plates, and the granulation quality is improved.

This invention belongs to the technical field of traditional Chinese medicine extraction equipment, specifically relating to an automated sterilization process for the entire pipeline of traditional Chinese veterinary medicine extraction. This application modifies the entire pipeline of traditional Chinese veterinary medicine extraction to meet the requirements of high-temperature and high-pressure steam sterilization. Before the extraction of traditional Chinese veterinary medicine, high-temperature and high-pressure steam is used to sterilize the entire pipeline. Then, the extraction temperature in the extraction tank is controlled to ensure the sterilization of the extract, thereby ensuring that the final oral liquid meets the sterilization requirements. This saves on the terminal sterilization process and allows for direct filling with non-high-temperature resistant packaging, greatly saving manufacturing costs.

The utility model discloses a saccharification pile oxygen introducing device in the technical field of white spirit brewing, which comprises a vertical pipe and a coil pipe, the vertical pipe is vertically arranged, the top end and the bottom end of the vertical pipe are sealed, a plurality of exhaust holes penetrating through the inner wall and the outer wall are formed in the peripheral side of the vertical pipe, and a connecting hole penetrating through the inner wall and the outer wall is formed in the bottom end of the vertical pipe. A plurality of vent holes penetrating through the inner wall and the outer wall are formed in the circumferential side of the coil pipe, an air inlet in one end of the air conveying pipe is connected with the air supply device, and the other end of the air conveying pipe is connected with the pipe opening in the outermost ring of the coil pipe. The saccharification pile oxygen introducing device solves the technical problems that fermentation is insufficient and sauce fragrance is not prominent enough due to the fact that the oxygen content of the fermentation pile core and the pile bottom of an existing saccharification pile is low, and is simple in structure and capable of improving the oxygen content of the pile core and the pile bottom of the saccharification pile.

The application discloses a novel overspeed protection device, which comprises a device body, wherein the device body comprises a base, a support device, an assembling table, a terminal mounting table, a terminal box and a protection device; the support device is provided in one group, and the support device is fixed on the top of the base through welding; the assembling table is fixed on the top of the support device through welding; the terminal mounting table is fixed on the front end of the assembling table through screws; the terminal box is fixed on the terminal mounting table through screws; and the protection device is installed on the top of the assembling table; the protection device comprises an integrated block, a first electromagnetic valve, a second electromagnetic valve, a hydraulic control reversing valve, a safety oil pipe, a pressure oil pipe, an oil return pipe, a pressure switch and a pressure gauge. The device can more accurately control the flow direction and pressure of oil, can quickly and accurately perform protection actions such as safety oil unloading when abnormal conditions such as overspeed occur, and can guarantee the safe operation of equipment and improve safety.

The utility model discloses a coating device for coating an ultrafiltration membrane with a carbon-based material, which comprises a support, a nitrogen cylinder, a gas inlet pipe, a connecting pipe, a membrane covering tank and a waste liquid collecting tank, the nitrogen cylinder, the membrane covering tank and the waste liquid collecting tank are sequentially distributed on the support, and the membrane covering tank comprises an upper sealing cover, a lower sealing cover and a tank body. The upper sealing cover and the lower sealing cover are installed at the upper end and the lower end of the tank body respectively, a liquid inlet pipe is installed at the top of the upper sealing cover, a stirring assembly and a supporting frame are arranged in the tank body, the stirring assembly is installed on the upper sealing cover, and the supporting frame is arranged on the lower sealing cover. According to the utility model, not only can the carbon-based material be uniformly coated on the ultrafiltration membrane to form the carbon-based material modified ultrafiltration membrane, but also turbid liquid of the carbon-based material always passes through the ultrafiltration membrane in the whole coating process due to the fact that the carbon-based material is coated on the ultrafiltration membrane through filtration, so that the phenomenon that the membrane permeation flux of the ultrafiltration membrane is reduced cannot be caused; and the film covering efficiency and quality are ensured.

The utility model discloses a high-precision stationary pollution source carbon dioxide measuring device, which relates to the technical field of carbon dioxide measuring devices and comprises a carbon dioxide measuring device and a smoke sampler, a case is mounted in the carbon dioxide measuring device, a heat tracing pipe is connected between the carbon dioxide measuring device and the smoke sampler, and the heat tracing pipe is connected with the smoke sampler. The flue gas sampling device further comprises a back flushing device, and an output pipe of the back flushing device extends to the flue gas sampler. A touch screen is arranged on the outer side of the machine box, a flowmeter is fixedly installed outside the machine box, a power switch is fixedly installed on the outer side of the machine box, a network port is formed in the machine box, a plurality of DB serial ports distributed at equal intervals are formed in the machine box, the size of the machine box is designed according to the standard in the industry, and the machine box is installed in a standard 19-inch machine cabinet system in a modularized mode. According to the design, real-time online monitoring of organized emission of carbon dioxide from stationary pollution sources is effectively achieved, and a support is provided for national double-carbon work.

The present invention discloses a respiratory inhibition bandage for extracorporeal lithotripsy, belonging to the field of medical auxiliary equipment. A respiratory inhibition bandage for extracorporeal lithotripsy comprises: a first support seat, a second support seat, an annular bandage and a first fixing band; the surrounding bandage is connected end to end, surrounds the patient's chest cavity, and is arranged between the first support seat and the second support seat; the first fixing bandage passes directly above the annular bandage and abuts against the annular bandage; a horizontal first winding roller is arranged on the first support seat, the first winding roller is rotatably connected to the support seat, a ratchet is coaxially fixedly connected to the first winding roller, a plurality of slots are provided on the upper end surface of the first support seat, and the slots are arranged along the axial direction of the first winding roller; compared with the prior art, the bandage of the present application can be quickly bound and the pressure applied to the patient can be adjusted more conveniently.

The application relates to a liquid rocket engine test heating device, in particular to a liquid rocket engine inner cavity induction heat accumulation type hot nitrogen gas supply device and method, and solves the technical problem that the existing low-temperature liquid rocket engine usually adopts an external hot air forced convection or electric heating wire heating nitrogen gas mode to heat the pipeline and the engine inner cavity nitrogen gas, and it is difficult to meet the low-temperature liquid rocket engine pipeline and engine inner cavity rapid temperature recovery requirement. The liquid rocket engine inner cavity induction heat accumulation type hot nitrogen gas supply device comprises a heating unit, a pressure monitoring unit, a temperature monitoring unit and a control unit; the heating unit comprises a buffer tank and a heating assembly arranged on the buffer tank; an air inlet of the buffer tank is used for being connected with an air source; the pressure monitoring unit and the temperature monitoring unit are arranged on the buffer tank and are connected with the control unit respectively; and the control unit is used for controlling the heating assembly to work according to the inner cavity nitrogen gas temperature and the outer wall temperature of the buffer tank.

The technical scheme belongs to the technical field of hydraulic power devices, and particularly relates to a hydraulic work station which comprises a mounting seat and a pump seat arranged on the mounting seat, the pump seat covers the mounting seat, a pump cavity is formed between the pump seat and the mounting seat, two gears are rotatably connected in the pump cavity, and the two gears divide the pump cavity into a first oil cavity and a second oil cavity. The mounting seat is provided with a first oil way and a second oil way, the first oil way and the second oil way are communicated with the first oil cavity and the second oil cavity in a one-to-one correspondence mode respectively, and the ends, away from the pump cavity, of the first oil way and the second oil way are used for being connected with an execution piece. The two gears are hidden between the pump base and the mounting base, the pump base can tightly cover the pump cavity, the sealing performance of the pump cavity is ensured, and the compactness between the pump base and the mounting base is improved.

The invention discloses a preparation method of a formaldehyde adsorption antibacterial material taking activated carbon as a carrier, activated carbon fibers are soaked in a potassium permanganate solution to generate manganese dioxide, then the manganese dioxide is soaked in an amine quinone network substance solution and a silver solution in sequence, and the high specific surface area and the porous structure of the manganese dioxide provide a large number of adsorption sites; the amine-quinone network and silver ions can improve the overall antibacterial ability of the material, and amino and quinonyl on the amine-quinone network can enhance the particle adsorbability of activated carbon through hydrogen bonds, Van der Waals force and the like, so that the defects of poor small particle adsorption ability and poor antibacterial effect of an activated carbon adsorption material in the prior art are overcome; the amine-containing compound is polyethyleneimine, the quinone-containing compound is 5-hydroxy-1, 4-naphthoquinone, the mixing mass ratio of the amine-containing compound to the quinone-containing compound is 1: 1, the amine-quinone network substance has a network structure, and the network structure can provide additional adsorption sites and enhance the adsorption capacity to small particles.

The utility model provides an air conditioning system which comprises a compressor, a four-way valve, an outdoor heat exchanger, an outdoor subcooler, a throttling element and an indoor subcooler, the indoor heat exchanger, the outdoor heat exchanger, the outdoor subcooler, the throttling element, the indoor subcooler and the indoor heat exchanger are sequentially connected, and the four-way valve is provided with a first valve port, a second valve port, a third valve port and a fourth valve port. The first valve port is connected to an exhaust port of the compressor, the second valve port is connected to the outdoor heat exchanger, the third valve port is connected to the indoor heat exchanger, and the fourth valve port is connected to an air suction port of the compressor. According to the air-conditioning system, when the air-conditioning system is used for refrigerating or heating, the condensing process and the supercooling process are separately and independently carried out, so that the temperature and the pressure of each process can be more accurately controlled, unnecessary energy loss is reduced, the heat exchange efficiency of each process is higher due to the design of the independent heat exchanger, the overall energy efficiency of the system is improved, and the service life of the system is prolonged. The higher energy efficiency and lower energy consumption also means lower operation cost.

The present invention belongs to the technical field of waste heat recovery, and discloses a plant steam waste heat recovery and utilization system, including: a steam turbine; a generator and a compressor, which are coaxially connected to the steam turbine; the compressor is provided with a cooling cavity, and the steam inlet of the compressor is connected to the outlet of the cooling cavity; a steam pipeline, which is used to supply steam with waste heat and is connected to the inlet of the cooling cavity of the compressor; a pressure matcher; a low-pressure steam inlet valve, which is arranged between the cooling cavity of the compressor and the side steam inlet of the pressure matcher; a high-pressure steam inlet valve, which is arranged between the steam outlet of the compressor and the axial steam inlet of the pressure matcher; a bypass regulating valve, whose inlet is connected between the high-pressure steam inlet valve and the steam outlet of the compressor, and whose outlet is connected between the outlet of the pressure matcher and the steam inlet of the steam turbine. The present invention solves the problem that the existing steam waste heat recovery system can only convert the waste heat of steam into the heat of water for utilization, and cannot be converted into other energy forms, and has limitations.

The invention provides a radial expansion mechanism tool capable of adjusting curing pressure and a using method. The using method comprises the following steps that S1, a conical section of a mandrel is sleeved with an isolation sleeve, a plurality of taper hole sliding blocks are installed between the mandrel and the isolation sleeve, and an isolation layer, a baffle and a fastening nut are sequentially installed on a threaded shaft of the mandrel; the fastening nut is adjusted to enable the taper hole sliding block to radially tension the isolation sleeve, and the outer diameter of the isolation sleeve is turned; s2, sleeving the outer ring of the knuckle bearing bonded with the gasket on an isolation sleeve; s3, a fastening nut is adjusted to enable the taper hole sliding block to expand the spacer sleeve in the radial direction, and the spacer sleeve expands the gasket to enable the gasket to be pressed on the inner side of the outer ring of the knuckle bearing; and S4, curing the outer ring of the joint bearing bonded with the liner. According to the device, the pressure can be effectively controlled when the joint bearing liner is cured, sufficient attachment and sufficient loading force are effectively guaranteed when the liner is cured, the bonding quality of the cured liner is improved, and the dimensional precision of a joint bearing part is improved.

The invention provides an exhausting and water supplementing control method and device of a water chilling unit and the water chilling unit. The water cooling unit comprises a cold water pipeline, and a water pump, an exhaust valve and a water replenishing valve which are arranged on the cold water pipeline; the control method comprises the steps that first water flow information in the cold water pipeline is obtained; the opening degree of the exhaust valve is controlled and adjusted according to the first water flow information; and under the condition that the exhaust valve is opened, pipeline pressure and / or second water flow information in the cold water pipeline are / is obtained, and when the pipeline pressure and / or the second water flow information meet the set condition, the exhaust valve is closed, and the water supplementing valve is opened for water supplementing. According to the exhaust and water supplement control method and device of the water chilling unit and the water chilling unit, sufficient exhaust of gas in the cold water pipeline and stable control of pressure in the cold water pipeline are achieved at the same time, and the refrigeration effect of the water chilling unit is improved.

The utility model relates to the technical field of manufacturing of metal packaging containers, and discloses a hemming wheel device which comprises a sliding seat and a base body wheel, a sleeve is slidably connected to the outer portion of the sliding seat, a clamping mechanism is slidably connected to the outer portion of the sleeve, a coating is coated on the outer surface of the base body wheel, and the base body wheel is arranged on the base body wheel. The coating is in direct contact with an iron can opening to complete hemming operation and is used for enhancing the wear resistance of the base body wheel, the clamping mechanism comprises a circular ring, a rotating rod is fixedly connected to the interior of the circular ring, a connecting rod is rotatably connected to the exterior of the rotating rod, and an arc-shaped clamping plate is fixedly connected to the exterior of the connecting rod. According to the iron can edge curling device, the connecting plate is pulled to drive the circular ring to slide, the circular ring enables the connecting rod to drive the arc-shaped clamping plate to be opened through the rotating rod, the connecting plate is loosened after the iron can is placed, the limiting spring is reset, the arc-shaped clamping plate is pushed to clamp and fix the iron can, the iron can is rapidly and stably clamped, and it can be guaranteed that iron cans of different sizes are kept fixed in the edge curling process.