2086results about "Storage heaters" patented technology

The present disclosure provides an energy storage energy system, which converts energy into cold power and / or heat power by utilizing an energy storage mode and stores the cold power and / or heat quantity. The stored cold power is used for a technology and a cold source of an existing freezing or air conditioner refrigeration industry; the stored heat power is used for a technology and heat source of an existing heating or heat supply industry. The energy storage energy system of the present disclosure adopts a large amount of wind power and photovoltaic power generation electric energy. The heat storage is applied to a current heating or heat supply market for sales which is mainly coal-fired. Cold storage subverts the existing refrigerant compression cycle technology, replaces refrigeration compressor freezing and air conditioning refrigeration systems; heat storage subverts boiler heat supply technology, replaces fossil fuel boiler heating and heat supply systems.

This disclosure includes systems and methods of operating a convection section of an furnace in a chemical production process with simulated combustion gas (SCG) that is heated by an electric or thermal energy source instead of by combustion. Some such systems and methods utilize a thermal mass that is configured to store thermal energy such that the thermal mass can be used to heat a working fluid. The thermal mass can be coupled to a heater that receives electrical energy from a renewable source, and converts the electrical energy into thermal energy to heat the thermal mass and thereby store the thermal energy. In some aspects, a furnace is in fluid communication with the thermal mass such that the furnace receives the working fluid from the thermal mass to provide thermal energy to process for chemical production that would otherwise typically be provided by flue gas from a hydrocarbon-fired radiant section in conventional systems. In some configurations, the working fluid is or comprises one or more radiatively participating gases heated to exceed a threshold above which the working fluid transfers heat through radiation.

The embodiment of the invention provides a heat conduction oil heating temperature control system and method. The system comprises a first detection module, a temperature control module, a circulating pump, a waste heat recovery module, a plurality of segmented heat conduction oil pipelines, heating modules corresponding to the heat conduction oil pipelines and a second detection module. The first detection module sends the environment temperature to the temperature control module; the temperature control module calculates the initial heating power corresponding to each heat-conducting oil pipeline, contains the initial heating power in a heating instruction and sends the heating instruction to the corresponding heating module; the circulating pump drives the heat-conducting oil to each heat-conducting oil pipeline; the heating module heats the heat utilization equipment according to the initial heating power; the second detection module sends the heating temperature of the conduction oil pipeline corresponding to the current time period to the temperature control module; the waste heat recovery module calculates the waste heat utilization rate and sends to the temperature control module; and the temperature control module calculates to-be-adjusted heating power required by the next time period, contains the to-be-adjusted heating power in a heating instruction and sends the heating instruction to the corresponding heating module for subsequent heating temperature control, so that the heating temperature control precision of the heat-conducting oil is improved, and the energy consumption is reduced.

The invention relates to a heat exchange type water heater with dry burning prevention and automatic water replenishing functions, which comprises a water tank, a heat exchange assembly, a water replenishing device, a liquid level sensor and a main control system, and a first heater is arranged in the water tank; the heat exchange assembly comprises a heat exchanger which is arranged in the water tank; the water replenishing device is used for replenishing water into the water tank; the liquid level sensor is used for detecting the liquid level in the water tank; the first heater, the heat exchange assembly, the water supplementing device and the liquid level sensor are electrically connected with the main control system. The master control system is configured to control the first heater to be closed and control the water supplementing device to work when it is detected that the liquid level in the water tank is lower than a first position. When it is detected that the liquid level is located between the first position and the second position, the first heater and the water supplementing device are controlled to work; the second position is located above the first position; when the liquid level is detected to be higher than the second position, the water supplementing device is controlled to be closed. By means of the liquid level sensor and the main control system, the purposes of preventing dry burning and automatically supplementing water are achieved.

The utility model belongs to the field of crude oil heating, and particularly relates to a crude oil heating device which comprises an air energy heat pump, a water-oil heat exchanger, an air-oil heat exchanger, a solar hot air heat collector and a ground source heat exchanger. A heat exchanger tube pass is arranged in an inner cavity of the water-oil heat exchanger, the two ends of the heat exchanger tube pass are communicated with a heat exchanger oil conveying pipe, and the ground source heat exchanger is communicated with an air source evaporator copper pipe and used for evaporating refrigerants in a pipeline of the ground source heat exchanger and the air source evaporator copper pipe. The heat pump and other two heat sources can form a multi-source heating device, and the system keeps constant temperature through crude oil secondary heat exchange and phase change heat storage, is energy-saving, efficient and pollution-free, can adapt to cold weather, and is suitable for popularization.

The utility model discloses a multifunctional reaction kettle for ivabradine production, and relates to the technical field of pharmaceutical machinery, the multifunctional reaction kettle comprises a support frame, a reaction kettle body, a pressure control mechanism, a stirring mechanism and a temperature control mechanism, the temperature control mechanism comprises a temperature sensor, an electric heating coil, a cooling pipeline and refrigeration equipment, and the inner wall of the reaction kettle body is provided with a liquid storage cavity; the temperature sensor, the electric heating coil and the cooling pipeline are all fixedly arranged in the liquid storage cavity, heat conduction oil is arranged in the liquid storage cavity, the cooling pipeline penetrates through the reaction kettle body to be communicated with the refrigeration equipment, and through cooperation of the temperature sensor, the electric heating coil, the cooling pipeline and the refrigeration equipment, accurate control over the temperature in the reaction kettle can be achieved. No matter whether the temperature needs to be increased, decreased or maintained at a constant temperature, quick response can be achieved, the set requirements can be met, and the special requirements of different chemical reactions on the temperature in the ivabradine production process are met.

The invention discloses a method for improving indoor heating. A circular heating electric stove wire electric stove, a stepless temperature and pressure regulator, a circular electric ceramic stove microcrystalline panel, an upper-layer stainless steel round barrel, a lower-layer stainless steel round barrel and water are matched for use, the water added into the lower-layer stainless steel round barrel is heated and boiled, and low-cost, high-efficiency and energy-saving effects are achieved by efficiently utilizing water vapor generated by heating. The invention discloses a noiseless indoor heating method. A simple and convenient mode is adopted, the comfortable and ideal temperature requirement is met, and the indoor heating method which is low in cost, environmentally friendly and free of noise and reaches about 24 DEG C is achieved. Under different environment conditions, the heating temperature and the heating time are set according to respective requirements; the heating device is simple in structure and convenient to use, continuous heating is conducted for 60 minutes at the power of 200 W-300 W in a room with the area of 15 square meters, and electricity consumption displayed by an electricity meter is 0.10 yuan to 0.15 yuan and is far lower than the electricity consumption cost of air conditioner heating and is only equivalent to about 50% of the concentrated heating cost.

The invention provides a method and system for utilizing flue gas generated after petroleum coke calcination, and belongs to the field of aluminum electrolysis and aluminum carbon. The method comprises the following steps: collecting high-temperature flue gas discharged after calcining petroleum coke; the high-temperature flue gas is subjected to heat exchange treatment, and low-temperature flue gas with the set temperature is obtained; low-temperature flue gas is used as a heat source, the wet-based petroleum coke is heated and dried, and dry-based petroleum coke with a set water value is obtained; and calcining the dry-based petroleum coke, and circularly using flue gas collected by calcining for heating and drying the wet-based petroleum coke to form a closed cycle. High-temperature flue gas obtained after calcination is subjected to heat exchange to form low-temperature flue gas, the low-temperature flue gas is used for drying wet-based petroleum coke, a flue gas circulation system is formed, and multi-stage utilization of waste heat is achieved. Meanwhile, the dried petroleum coke can reduce energy consumption required by water evaporation during calcination, and erosion of water vapor to a hearth refractory material is avoided. Therefore, the negative influence of petroleum coke moisture on the heat efficiency is reduced while the waste heat utilization rate after petroleum coke calcination is improved.

A method for controlling a system including a heat pump, a space heater, a space cooler, a thermal battery, an electrical battery and a grid access system, the method including turning on at least one of discharging of the thermal battery and discharging of the electric battery, if a hot water demand exists; turning on at least one of the heat pump, charging of the thermal battery, charging of the electric battery and discharging of the electric battery, if a space heating demand exists; turning on charging of the thermal battery, if a space cooling demand exists; and backfeeding electricity from the electric battery to a grid through the grid access system, if electricity sale is desired.

The invention is applicable to the technical field of crude oil heating, and provides skid-mounted equipment for heating crude oil at a well group site, the skid-mounted equipment comprises a base, a control box, a crude oil heat exchange tank and a heating tank, a heat exchange coil is arranged in the crude oil heat exchange tank, the heating tank is communicated with the heat exchange coil, fixing frames are fixed on two sides of the base, and two supporting rods are hinged in the fixing frames; rollers are installed at the bottoms of the supporting rods, sliding sleeves sleeve the supporting rods, a lead screw is rotationally installed on the fixing frame, push rods are hinged to the two ends of the lead screw through outer sleeves, and the ends, away from the outer sleeves, of the push rods are hinged to the sliding sleeves; a worm gear is fixed to the middle of the lead screw, and a worm meshed with the worm gear penetrates through the fixing frame. Accurate control and constant-temperature maintenance of the temperature of the crude oil are achieved, the high-condensation-point crude oil is effectively prevented from being solidified in the conveying and storage process, and the flowing smoothness of the crude oil is guaranteed. By accurately controlling the temperature of crude oil, accumulation of sediments at the bottom of the storage tank due to too low temperature is prevented, and the cleaning workload and downtime are reduced.

The invention relates to the technical field of medical instruments, and discloses an isolation melting device and a pulp melting machine. The isolation melting device comprises a fixed frame which defines a mounting space; the movable support comprises a first support and a second support, one end of the first support is rotatably connected with one end of the second support, and the other end of the first support and the other end of the second support can move towards each other or away from each other; the bag body is provided with a bag opening and is connected with the first bracket and the second bracket; wherein the movable support can move into or out of the installation space, when the movable support moves into the installation space, the installation space limits the first support and the second support, the first support and the second support move oppositely, the bag body shrinks, and the area of the bag opening is reduced; when the movable support moves out of the installation space, the installation space relieves limiting of the first support and the second support, the first support and the second support move away from each other, the bag body expands, and the area of the bag opening is increased. Placement convenience of the plasma bag is improved, and heat exchange efficiency is improved.

The invention discloses a solar-driven integrated direct air carbon capture system based on cyclic amine, which belongs to the technical field of carbon capture and comprises an absorption-desorption core unit, a solar energy supply unit and a resource circulation module. The absorption-desorption core unit comprises a double-layer spherical reactor and a condensing device, and cyclic amine composite absorption liquid is added into the double-layer spherical reactor; and the resource circulation module comprises a CO2 graded collection device and an agricultural facility. According to the invention, the reaction energy barrier is reduced, the desorption temperature is reduced, the energy consumption required by the reaction is reduced, a large amount of low-price desorption liquid amine solution is provided for the DAC technology, the application cost of the DAC technology is reduced, and the comprehensive utilization efficiency of alkaline raw materials in the amine method carbon capture technology is improved.

According to the rural air conditioning device, coal or biomass straw is adopted as fuel, the energy storage technology is combined, flue gas waste heat generated by a kitchen range device is efficiently recycled and stored, the stored energy is used for dragging an absorption type refrigerating device to be used for refrigerating and heating air, and an adopted regenerator can flexibly adjust the operation mode and is used for peak clipping and valley filling; the energy-saving kitchen range is used for refrigerating, heating or drying clothes, the power consumption is low, the comprehensive heat utilization efficiency of the kitchen range is greatly improved, the market application space is obvious, and the expected economic, social and environment-friendly benefits are remarkable.

The present invention discloses an electrode boiler for heating molten salt, comprising: a shell, formed with a receiving cavity; a low-temperature molten salt distribution header, extending into the receiving cavity and arranged vertically and capable of spraying molten salt in at least one direction; an electrode heating unit, comprising an electrode plate capable of being connected to electricity, the electrode plate being arranged in the receiving cavity along a direction substantially parallel to the low-temperature molten salt distribution header, the electrode plate being capable of connecting and heating the molten salt when the molten salt is sprayed thereon, and being capable of disconnecting and stopping heating when no molten salt is sprayed thereon. The present invention uses molten salt as a conductive medium and a technology and equipment for directly heating the molten salt, which can effectively meet the heating requirements in the field of energy storage applications.

The invention relates to a fused salt heat storage technology in a spinning process, in particular to a fused salt heat storage system based on electricity price adjustment and a control method.The fused salt heat storage system comprises a fused salt pipeline, a steam pipeline and a nylon pipeline, and the fused salt pipeline is provided with a fused salt storage tank, an electric heater, a first circulating pump, a heat exchanger and a second circulating pump; a third circulating pump is arranged on the steam pipeline; a screw extruder, a spinning machine and a steam sleeve are arranged on the nylon pipeline; the electric power demand in the peak period is remarkably reduced, the pressure of an electric power system in the peak period is relieved, the social benefit is remarkable, fused salt heat storage and heating are combined together, and the working efficiency is improved.

The invention relates to a sauna heater and a sauna+bio-danarium combination heater. An evaporator-batch column 10 for liquid 30 is arranged in the oven. The advantageous invention is suitable for wall and floor models, as well as for "stone column tower" oven models, etc., also for taller and larger oven models, with the novel "Löyly tub bowl" 13 for energy-saving infusions and Löyly infusions in its variations and bath forms. This energy-saving new development with the "multi-path air control" and the "anti-virus corona pandemic" block system 26 is also perfectly suited against infectious aerosols and mutants and also in splash water at ground level. With current technology, the sauna and sauna+bio-danarium combination can be operated via an "app" from a smartphone or tablet, also via touchscreen. Experience and development from several innovations over 55 years in the sauna+ sauna+danarium wellness area.

The invention provides a high-efficiency electric heating system suitable for a gas-solid fluidized bed, and the system comprises the fluidized bed which is provided with a gas inlet, a gas outlet, a material inlet and a material outlet, and is internally provided with solid particles; the heat transfer assembly comprises a plurality of hollow objects arranged in the fluidized bed, and part of the solid particles are contained in the plurality of hollow objects; wherein at least a first part of the hollow object is used for being connected with a power supply end, and a second part of the hollow object is not electrified; and the first part of the hollow object is a graphite electrifying body. Through the system provided by the invention, the loss of the coil is recovered, and the effective utilization rate of electromagnetic induction heating is greatly improved.

The utility model relates to the technical field of heat conduction oil furnaces, in particular to an energy-saving heat conduction oil furnace which comprises a motor fixedly connected to the upper end of a body and used for providing power, the output end of the motor is connected with fan blades used for cooling through keys, and the outer surface of the motor is sleeved with a heat insulation sleeve used for protection. The upper end of the motor is fixedly connected with a pipeline used for conveying, the outer surface of the pipeline is sleeved with heat preservation cotton used for protection, and the upper end of the body is fixedly connected with a support used for supporting. According to the energy-saving heat-conducting oil furnace, through cooperative arrangement of the body, the motor, the fan blades and the thermal insulation sleeve, a worker can effectively cool the motor, so that the motor can be prevented from being damaged due to overheating in operation, the service life of the motor can be prolonged, and the practicability of the heat-conducting oil furnace is further improved; the problem that the temperature of the motor is affected by heating of the heat-conducting oil furnace, so that the motor is damaged due to too high temperature is solved.

The invention belongs to the technical field of tunnel terrestrial heat utilization in alpine regions, and particularly discloses a terrestrial heat three-dimensional heat preservation and ice melting system suitable for a cable fire ditch and a drainage ditch of an alpine deeply-buried highway tunnel. The terrestrial heat three-dimensional heat preservation and ice melting system comprises a terrestrial heat taking subsystem, a terrestrial heat pipe heat preservation result, a heat exchange unit and a heat supply subsystem. The terrestrial heat taking subsystem is connected with the heat exchange unit through a transmission pipeline, the heat supply subsystem is connected with the heat exchange unit through the terrestrial heat pipe heat preservation subsystem, and the terrestrial heat taking subsystem is located in a terrestrial heat source area which is about two kilometers away from a tunnel entrance. The system transmits heat to the cable trench and the drainage ditch through circulating high-temperature fluid, so that the temperature of the regions is always kept above a freezing point, and water in the cable, the fire-fighting pipeline and the drainage ditch is prevented from being frozen. The system has the advantages of being efficient, energy-saving, clean, environment-friendly, convenient to construct and the like, and meets the anti-freezing requirements of tunnel cables, fire-fighting pipelines and drainage ditches in the high and cold environment.

An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. In one application, the energy storage system provides higher-temperature heat to a conventional lower-temperature heat source to boost the temperature of a thermal power cycle working fluid to a turbine, thereby increasing efficiency of the power cycle.

The utility model discloses a photovoltaic energy storage system for a zero-carbon park, which belongs to the field of photovoltaic application and comprises a photovoltaic power generation unit, a solid energy storage unit and an energy output unit, the solid energy storage unit is used for storing electric energy of the photovoltaic power generation unit and electric energy of the photovoltaic power generation unit in a valley electricity stage, and the solid energy storage unit is provided with a heat storage brick spacing regulator; the energy output unit is used for supplying energy to park processing and production; the solid energy storage unit and the photovoltaic power generation unit are connected with the energy output unit. The photovoltaic energy storage system for the zero-carbon park with the structure is used for supplying energy to the park, energy supply of steam production, building refrigeration and heating and high-temperature heat conduction oil is achieved through the energy output unit, and the functional requirements of different application scenes are met.

The utility model discloses a fuel gas heat conduction oil boiler, which relates to the technical field of oil boilers, and comprises a base, the upper side of the base is fixedly connected with a water suction pump, the input end of the water suction pump is fixedly connected with a water suction pipe, the output end of the water suction pump is fixedly connected with a plurality of supporting legs, and the upper side of the base is fixedly connected with a water inlet pipe. A boiler body is fixedly connected to the upper ends of the supporting legs, an air outlet valve is fixedly connected to the upper side of the outer wall of the boiler body, and a safety valve is fixedly connected to the upper side of the outer wall of the boiler body. Through the mutual cooperation of a filtering adsorption plate, a sliding groove, a push block, a sliding block, a limiting rod, a first spring, a first connecting plate and a U-shaped inserting plate, the filtering adsorption plate can be detached and replaced, the filtering effect of the device is improved, the emission of harmful substances in waste gas can be effectively reduced, the health of surrounding residents and workers can be protected, and the practicability is high. And respiratory system diseases or other health problems caused by inhalation of harmful gas are avoided.

Underground seasonal heat storage systems, characterized in that the storage medium can consist of different solids or liquids, and the storage system includes one or more devices for heating and one or more devices for recovering the heat.

The invention discloses an online oil heating method for a catalytic slurry oil carbon black production line, which comprises the following steps: 1) flue gas of the carbon black production line is shunted to a first heat exchanger and a second heat exchanger by using a first three-way regulating valve, the first heat exchanger is used for heating conduction oil, and the second heat exchanger is used for heating slurry oil after filtering a catalyst; (2) a flue gas outlet of the first heat exchanger is shunted through a second three-way adjusting valve, part of flue gas flows back to a flue gas pipeline between the first three-way adjusting valve and the second heat exchanger, part of flue gas flows back to the flue gas pipeline between the first three-way adjusting valve and the first heat exchanger through a third three-way adjusting valve; 3) the heat conduction oil in the first heat exchanger and a third heat exchanger form heat conduction oil circulation, and the third heat exchanger is used for heating the catalytic slurry oil on the front side of the first filter.By means of the heating method, local overheating and coking of the catalytic slurry oil can be effectively avoided.

The utility model discloses a conduction oil boiler which comprises a heat exchange assembly and a heating assembly, the heat exchange assembly comprises a first oil supply pipe, a second oil supply pipe, a first heat exchanger and a second heat exchanger, the first oil supply pipe is connected with the first heat exchanger, and the second oil supply pipe is connected with the second heat exchanger. The heating assembly comprises a combustor and a waste gas pipe, the combustor generates heat through combustion and is connected with the first heat exchanger, and the waste gas pipe leads out waste gas generated by the combustor and is connected with the second heat exchanger. Heat generated by the combustor is transferred to heat conduction oil in the first oil supply pipe through the first heat exchanger, heat of smoke in the waste gas pipe is transferred to heat conduction oil in the second oil supply pipe through the second heat exchanger, and therefore the heat generated by combustion of the combustor can be fully absorbed. The heat-conducting oil boiler provided by the utility model can be used for effectively absorbing heat entrained in flue gas, so that the waste of energy is avoided.

The invention discloses a high-temperature stable gas heat conduction temperature control method and system, and relates to the technical field of temperature control. The system comprises a high-temperature inert gas loop, a gas circulation driving module, a gas heating module, a gas heat exchange module, a gas cooling module, a gas purification and supplement module and a precise temperature sensing and control module. The high-temperature inert gas loop is configured as a closed circulation path and is used for bearing high-purity inert gas as a heat carrier; and the gas circulation driving module is arranged in the high-temperature inert gas loop and is used for driving the high-purity inert gas to continuously and circularly flow in the closed circulation path. By adopting high-purity inert gas as a heat-conducting medium and combining precise circulation driving, multi-stage heating, efficient heat exchange, active cooling, online purification and intelligent control technologies, the problems that an existing liquid heat-conducting medium is unstable in phase change at a high temperature, a metal eutectic medium is poor in safety, and a composite system is high in complexity are solved.

The utility model relates to the technical field of nitrogen preheating, and discloses a nitrogen preheating structure which comprises a base, a preheating box fixedly mounted on the upper surface of the base, a heating box fixedly mounted on the upper surface of the base, two heaters fixedly mounted on the upper surface of the heating box, and a circulating heating mechanism arranged on the heating box, the heating box is arranged on the base, the circulating heating mechanism is used for circulating and reusing a heating water source and comprises a water pump, the water pump is fixedly installed on the upper surface of the heating box, the preheating mechanism is arranged in the base and used for preheating nitrogen, the preheating mechanism comprises a motor, and the motor is fixedly installed in the inner wall of the base. Water can be heated and then input into the preheating box to conduct heat exchange on nitrogen, the temperature during nitrogen preheating can be controlled by accurately controlling the temperature of the water, the heated water can be recycled through the water pump and the circulating pipeline, resource waste is reduced, and more convenience is achieved.

The utility model discloses an ammonia gas heating system capable of improving boiler efficiency. The ammonia gas heating system comprises a combustion boiler, an ammonia gas burner arranged in the combustion boiler, an air preheater communicated with a smoke outlet of the combustion boiler, and a dust remover, a desulfurizing absorption tower and a chimney which are sequentially communicated with the air preheater in the smoke flowing direction. The system further comprises at least one group of flue gas coolers, a closed circulating heat medium water system and an ammonia gas supply system; the multiple smoke coolers are arranged on the upstream of the chimney in a communicating mode and used for supplying heat to the heating medium water system. Ammonia gas supplied by the ammonia gas supply system is heated by the heating medium water system and then enters the ammonia gas combustor to be combusted. Considering that ammonia gas is dangerous, in order to avoid leakage of the ammonia gas, the heating medium water circulation system is arranged to serve as an energy transfer medium, the problems of pipeline corrosion and abrasion possibly caused by direct contact between an ammonia gas pipeline and flue gas are avoided, and therefore the problem of leakage of the ammonia gas is avoided. And the safety and reliability of the whole system are improved.

The utility model provides an auxiliary heat preservation device suitable for a traditional Chinese medicine Reyan bag, which belongs to the technical field of medical instruments and comprises a heat preservation box body, a sealed solution cavity and an open heating cavity are arranged in the heat preservation box body, a heating piece is arranged in the sealed solution cavity, a temperature control piece is arranged on the outer sleeve box body, and the temperature control piece is connected with the open heating cavity. The temperature control part is electrically connected with the heating part, a traditional Chinese medicine hot compress bag is placed in the open heating cavity, a refrigeration fan is arranged on the side wall of the outer sleeve box body, and the refrigeration fan is communicated with the side wall of the open heating cavity; and the sealing cover body covers the open heating cavity, a sprayer is arranged on the sealing cover body, the sprayer extends to the lower surface of the sealing cover body, and the sprayer is used for spraying atomized liquid into the open heating cavity. The auxiliary heat preservation device is easy to use, high in practicability and capable of conducting heating or heat preservation on different traditional Chinese medicine hot compress bags.

The invention discloses a process method and device for improving heat stability through gas pressurization of an organic heat carrier heat supply system, and relates to the technical field of heat conduction oil systems, the device comprises an expansion tank, the bottom end of the expansion tank is fixedly connected with a heat conduction oil pipeline, a mounting frame is arranged on one side of the expansion tank, and the device further comprises a nitrogen tank, a gas inlet mechanism and an exhaust mechanism. By arranging the air inlet mechanism, the hydraulic cylinder operates to drive the partition plate to move, and the partition plate moves downwards to reduce the space in the expansion tank, so that the air pressure in the expansion tank is increased, and the condition of negative pressure is avoided; meanwhile, when the partition plate moves downwards, the second air inlet pipe is automatically opened, nitrogen in the nitrogen tank can enter the expansion tank through the second air inlet pipe, and the air pressure in the expansion tank is increased in the mode that the space in the expansion tank is reduced through the displacement of the partition plate; and the speed of supplementing gas in the expansion tank is increased, so that the negative pressure working condition in the expansion tank is avoided.