3473results about "Fluid circulation arrangement" patented technology

A cooling system includes a liquid loop, a vapor compression loop, and a heat exchanger in fluid communication with each of the liquid loop and the vapor compression cycle loop. The liquid loop includes a cold sink for cooling a heat load. The vapor compression cycle loop is fluidly coupled to the liquid loop by a separator, which is configured to separate a two-phase form of a working fluid received from the cold sink into a vapor form of the working fluid and a liquid form of the working fluid.

A plurality of components of a refrigeration cycle are connected to a connection module. The connection module includes a body having a refrigerant flow path that constitutes a part of a refrigerant flow path in the refrigeration cycle. The refrigerant flow path includes a high-temperature-side flow path and a low-temperature-side flow path. The high-temperature-side flow path has a connection port to which a high-temperature-side component of the plurality of components, through which a high-pressure refrigerant of the refrigeration cycle flows, is connectable. The low-temperature-side flow path has a connection port to which a low-temperature-side component of the plurality of components, through which a refrigerant having a lower temperature than the high-pressure refrigerant flows, is connectable.

The condensation pump type dilution refrigerating machine with the booster pump comprises the pre-cooling module and the dilution module, the pre-cooling module provides the required pre-cooling temperature for the dilution module, the dilution module uses the booster pump working at 1K, 3He circulation is achieved through cooperation of the booster pump and the condensation pump, no room-temperature circulation system is arranged, and therefore the dilution effect is good. And the defects of high heat loss and high compression power consumption in a room temperature circulation mode are overcome. Meanwhile, due to the fact that the booster pump is used, the system can obtain larger circulating flow so as to achieve larger cooling capacity, and the defect that a condensation pump type dilution refrigerator obtains large refrigerating power is overcome.

A flow direction control device of heating stream and cooling stream is prepared as connecting said device separately to the first heat exchange unit, the second heat exchange unit, air conditioner and compressor for controlling heated working fluid from the first heat exchange unit to be sent to air conditioner for being used as the first heat media or to be sent to the second heat exchanger for being condensed there then to send it to air conditioner for being used as the second cooling media in order to make air conditioner output hot and cold alternatively, enabling to set heating course on the first heat exchange unit for providing the third heat media out.

An air-conditioning apparatus includes configured to, during a heating-defrosting operation mode in which one of a first outdoor heat exchanger and a second outdoor heat exchanger connected in parallel with each other is defrosted as a target to be defrosted, compare a first condensing temperature obtained when the target to be defrosted is switched from one to the other with a second condensing temperature obtained when a normal heating operation mode in which the first outdoor heat exchanger and the second outdoor heat exchanger operate as evaporators is switched to the heating-defrosting operation mode, reduce, when the first condensing temperature is less than the second condensing temperature, an opening degree of a flow control device smaller than an initial opening degree, and increase, when the first condensing temperature is greater than the second condensing temperature, the opening degree larger than the initial opening degree.

A thermal management system for a vehicle includes a refrigerant circuit having an accumulator, a compressor, a refrigerant-air heat exchanger, a first expansion valve, and an evaporator. The thermal management system further including a heating system that is composed of a water pump, a coolant heater, and a heater core. The system further including a branch refrigerant line that is branched from a refrigerant line between the compressor and the refrigerant-air heat exchanger, a refrigerant-coolant heat exchanger wherein heat exchange is performed between a refrigerant and a coolant, a second expansion valve that is installed on the branch refrigerant line, and a first control valve installed at a branch point where the branch refrigerant line is branched from the refrigerant line between the compressor and the refrigerant-air heat exchanger.

The present invention discloses an electronic expansion valve with a buffering effect, which includes a stator assembly and a valve seat assembly. The valve seat assembly is installed at the lower part of the stator assembly. The valve seat assembly includes an end cover assembly, a magnetic isolation tube, a valve needle assembly and a valve seat assembly. A lead screw assembly is arranged inside the magnetic isolation tube. The valve needle assembly includes a valve needle and a valve needle spring arranged in the inner hole at the lower end of the valve needle. The lower end of the valve needle is inserted with a valve needle head. A balance flow channel is opened in the middle of the valve needle head. A bushing is sleeved on the outer side of the upper part of the valve needle head. One end of the bushing abuts against the valve needle spring. A valve needle sleeve is arranged at the lower end of the bushing. A valve needle internal leakage O-ring is installed between the inner side of the valve needle sleeve and the valve needle head. The lead screw in the lead screw assembly axially inserts into the central threaded through hole of the valve needle. The present invention has a balance pressure function, a long service life, and a buffering effect when closing the valve, preventing the problem of thread jamming and unable to open the valve.

The invention relates to the technical field of air conditioners, particularly provides an air conditioning system and a control method thereof, and aims to solve the problems that condensation is easily generated and the temperature is too high to facilitate heat dissipation in an existing refrigerant heat dissipation mode. In order to achieve the purpose, the air conditioning system comprises an outdoor heat exchanger, a control valve, a refrigerant radiator, a throttling element and an indoor heat exchanger which are sequentially connected. The refrigerant radiator is used for radiating a driving module of the air conditioning system; the air conditioning system further comprises a first temperature detection piece which is arranged on the side, close to the control valve, of the refrigerant radiator and used for detecting the temperature of the refrigerant flowing to the refrigerant radiator or flowing out of the refrigerant radiator. The opening degree of the control valve is adjusted in the refrigeration mode, the opening degree of the throttling element is adjusted in the heating mode, and the temperature of the throttling element and the control valve is controlled in the defrosting mode, so that the temperature is higher than the dew point temperature and lower than the temperature of the driving module; therefore, the driving module can be cooled, and condensation can be avoided.

The invention discloses a two-section compression type transcritical carbon dioxide heat pump system and a control method thereof. An outlet of a second compressor sequentially passes through a high-temperature heat exchanger and a flow divider and then is divided into two paths; wherein one path is communicated with an inlet of a first expansion machine through a heat flow stream inlet valve of the first heat regenerator, the hot side of the first heat regenerator and the hot side of the second heat regenerator, and the other path is communicated with an inlet of a second expansion machine through a heat flow stream inlet valve of the third heat regenerator and the hot side of the third heat regenerator in sequence; the outlet of the second expansion machine is communicated with the inlet of the mixer through the cold side of the second heat regenerator, the cold stream inlet valve of the first heat regenerator and the cold side of the second heat regenerator in sequence; an outlet of the first expansion machine communicates with an inlet of the mixer through the low-temperature heat exchanger, a cold stream inlet valve of the third heat regenerator, the cold side of the third heat regenerator and the first compressor, an outlet of the mixer communicates with an inlet of the second compressor, and the comprehensive energy efficiency of the carbon dioxide heat pump system can be improved.

The present invention relates to a refrigerant manifold applied to a cooling module applied to a vehicle cooling system. According to the refrigerant manifold of the present invention, by forming a hole or a slit in a middle plate and a housing of parts to which in / out ports are connected or parts to which in / out pipes are connected to discharge a leaked fluid to the outside when leakage occurs inside a manifold, it is possible to increase the accuracy of a leakage test.

The invention relates to the technical field of air conditioners, in particular to a valve box, an air conditioning system and a refrigerant leakage control method, and aims to solve the problems that an existing valve box is inconvenient to mount, and when the air conditioning system needs more valve boxes, the construction progress is affected. In order to achieve the purpose, the valve box comprises a box body, at least one liquid pipe assembly and at least one air pipe assembly, the liquid pipe assemblies and the air pipe assemblies are arranged on the box body, and the liquid pipe assemblies are connected with a liquid pipe of the air conditioning system and used for controlling on-off of a liquid path between an outdoor unit and an indoor unit of the air conditioning system; the air pipe assembly is connected with an air pipe of the air conditioning system and used for controlling on-off of an air path of the outdoor unit and an air path of the indoor unit. According to the valve box, the liquid pipe assembly and the air pipe assembly are arranged on the box body, then the liquid pipe assembly is connected with the liquid pipe of the air conditioner system, the air pipe assembly is connected with the air pipe of the air conditioner system, installation of the valve box can be completed, the installation process is more convenient, and therefore the installation efficiency of the whole air conditioner system can be improved.

A method for controlling a climate control circuit includes detecting one or more operating parameters of an evaporator expansion valve ("EXV", 140) in the climate control circuit, and determining operation stability of the EXV based on the one or more operating parameters of the EXV. The method also includes opening a bypass pathway (124) in response to determining the operation of the EXV is unstable, the bypass pathway includes an intermediate heat exchanger (130, economizer) and a second expansion valve (136) disposed in parallel with the first expansion valve (140), such that the intermediate heat exchanger cools a first portion of the working fluid flowing into the EXV using a second portion of the working fluid. A climate control system includes a climate control circuit, one or more sensors (192 A-D) for the climate control circuit, and a climate controller (190) to control the climate control circuit based on stability of an EXV in the climate control circuit.

The air inlet and return pipe comprises an air inlet and return pipe body and end nuts connected to the two ends of the air inlet and return pipe body, the air inlet and return pipe body is of a bilateral symmetry structure, and internal threads are arranged on the inner circumferential surfaces of the end nuts connected to the two ends; the air inlet and return pipe body is of a double-layer structure, the outer layer is a woven mesh made of stainless steel, and the inner layer is a fluoroplastic hose. End supports are respectively arranged at the joints of the two ends of the air inlet and return pipe main body and the end nuts, and are used for connecting the air inlet and return pipe main body and the end nuts; the length of the end portions of the two sides of the fluoroplastic hose is slightly larger than that of the woven mesh, and a turnup structure is formed at the end supporting position so that a sealing structure can be formed when the end nut is in threaded connection with other parts, the flexibility of the air inlet and return pipe of the pulse tube refrigerator is guaranteed, vibration can be greatly reduced, meanwhile, gas flow resistance is reduced, and working efficiency and refrigerating capacity are improved.

The invention discloses a heat pump circulation system and a heat pump circulation control method. The heat pump circulating system comprises a compressor, a first condenser, a second condenser, an evaporator, an expansion valve, a first switch valve, a second switch valve and a third switch valve, and the compressor communicates with the first condenser through a first branch pipeline of a first pipeline and communicates with the second condenser through a second branch pipeline. The first condenser and the second condenser are connected in series through the second pipeline, the first switch valve is arranged on the first branch pipeline, the second switch valve is arranged on the second branch pipeline, and the third switch valve is arranged on the second pipeline. By controlling the on-off of the first switch valve, the second switch valve and the third switch valve, the heat pump circulation system has a primary heating mode in which only the second condenser participates in work and a secondary heating mode in which the first condenser and the second condenser work simultaneously, so that the heat exchange efficiency of the condensers is improved.

According to the pipeline integration module, the outdoor unit and the heating and ventilation equipment, a containing cavity used for containing fluid is defined by covering a first plate body and a second plate body, a turning-connection opening communicating with the containing cavity is defined by arranging a turned-over edge, and the wall face of the defined containing cavity comprises a transition convex arc face; the wall surface defining the transfer opening comprises a turnup wall surface, the transition convex arc surface is connected with the turnup wall surface, and the part, inserted into the transfer opening, of the transfer pipe does not completely exceed the transition convex arc surface in the direction from the turnup wall surface to the transition convex arc surface, so that the transfer pipe does not stretch into the containing cavity, and the interference on fluid flowing in the containing cavity is small; the flow resistance generated by the adapter pipe in the containing cavity can be reduced, the adapter pipe can be in smooth transition with the transition convex cambered surface at the pipe opening, a gap can be prevented from being formed between the adapter pipe and the wall face of the containing cavity, then fluid in the containing cavity is prevented from generating vortex during flowing, and the flow resistance generated by the adapter pipe in the containing cavity is further reduced.

The utility model relates to the field of cold and heat pump units, in particular to a multifunctional efficient defrosting evaporation cold and heat pump unit which comprises a compressor, and an outlet of the compressor is respectively connected with an inlet of a shell and tube heat exchanger and an inlet of an evaporation cold heat exchanger through a four-way reversing valve. An outlet of the evaporation cold heat exchanger is connected with an inlet of the compressor and an outlet of the shell-tube heat exchanger through electronic expansion valves. An outlet of the shell-tube heat exchanger is connected with an inlet of the compressor and the fin type heat exchanger set through the electronic expansion valve. The fin type heat exchanger set comprises at least two sets of heat exchange channels which are mutually independent, each heat exchange channel is formed by connecting a three-way valve, a fin type heat exchanger and a one-way valve in series, and the three-way valve is connected with an inlet and an outlet of the compressor. The utility model provides a multifunctional efficient defrosting evaporation cold and heat pump unit, which can realize three functions of efficient refrigeration, heating and continuous defrosting while heating.

The invention discloses a robot series liquid cooling circulation system based on magnetic refrigeration. The system comprises a plurality of liquid cooling cavity channels, a magnetic refrigeration device, an air cooling device and cold liquid; the liquid cooling cavities are arranged at the positions of heat sources on the robot and used for cooling the positions of the heat sources, and at least part of the liquid cooling cavities are arranged in series; the cold liquid is filled in the liquid cooling cavity channel; the magnetic refrigeration device is connected and conducted with the liquid cooling cavity channel and at least cools the cold liquid; and the air cooling device is connected and conducted with the magnetic refrigeration device to discharge heat for the magnetic refrigeration device. According to the liquid cooling circulation system, part of the liquid cooling cavities are connected in series, so that a liquid cooling network is relatively simple, fewer liquid pumps are adopted, and the cost is low.

A control device includes a housing and a circuit board assembly. The circuit board assembly includes a circuit board, a processing chip, a gas detection probe and a controllable switch element. The processing chip is configured to acquire target gas information in an environment through the gas detection probe. A control end of the controllable switch element is electrically connected to the processing chip. An output end of the controllable switch element is configured for electrical connection with an external device. The processing chip is configured to control switching on or off of the controllable switch element at least according to the target gas information, thereby controlling change of an electrical signal of the external device. An air conditioner having the control device is also disclosed.

The utility model discloses an oil-gas condensation separation and hydrogenation precooling shared device for an oil-hydrogen combined station. The oil-gas condensation separation and hydrogenation precooling shared device comprises a hydrogen storage device and an oil storage device, the hydrogen storage device is sequentially connected with the high-temperature side of the hydrogen heat exchanger, the hydrogen adding machine and the hydrogen filling device; a cooling coil is arranged outside the oil storage device; an outlet of the cooling coil is provided with an oil storage temperature detection sensor, and a hydrogen temperature detection sensor is arranged between the hydrogen heat exchanger and the hydrogenation machine; the high-temperature side of the oil tank heat exchanger is sequentially connected with the booster pump and the cooling coil to form circulation; two ends of the low-temperature side of the oil tank heat exchanger are connected with a second short-circuit bypass; and a second three-way valve is arranged between the second short-circuit bypass and the input end of the low-temperature side of the oil tank heat exchanger. Atmospheric pollution caused by oil gas volatilization is avoided, and the utilization efficiency of energy and equipment in the station is improved.

The invention relates to a CO2 working medium combined cooling heating and power generation system which comprises a supercritical CO2 Brayton cycle unit which comprises a compressor unit, a heater, a supercritical CO2 turbine and a first power generator which are sequentially connected through a pipeline, and compressed and heated CO2 enters the supercritical CO2 turbine and generates power through the first power generator; the transcritical CO2 refrigeration cycle unit is connected with the supercritical CO2 Brayton cycle unit in parallel, and the transcritical CO2 refrigeration cycle unit comprises an expansion valve and an evaporator which are connected through a pipeline; the steam combined heat and power generation unit is connected with the heater, and part of steam of the steam combined heat and power generation unit is used for heating CO2 passing through the heater; and the to-be-refrigerated unit is connected with the evaporator, and the CO2 subjected to temperature reduction and pressure reduction of the transcritical CO2 refrigeration cycle unit enters the evaporator to be evaporated and absorb heat so as to refrigerate the to-be-refrigerated unit. The system energy is optimized and utilized in a graded mode, and the energy utilization efficiency is improved.

The utility model provides a heat exchanger structure and an air conditioning system. One end of the first heat exchange pipeline communicates with a liquid outlet of the heat exchanger, and the other end of the first heat exchange pipeline is connected with the indoor unit system; the first heat exchange pipeline is provided with a first throttling component used for controlling the opening degree of the first heat exchange pipeline and a first temperature detector used for detecting the temperature of fluid in the first heat exchange pipeline. One end of the second heat exchange pipeline communicates with a liquid outlet of the heat exchanger, and the other end of the second heat exchange pipeline is connected with the indoor unit system; the second heat exchange pipeline is provided with a second throttling component used for controlling the opening degree of the second heat exchange pipeline and a second temperature detector used for detecting the temperature of fluid in the second heat exchange pipeline. The heat exchanger structure solves the technical problem that the damage condition of the throttling component of the heat exchanger cannot be found easily.

The utility model relates to the technical field of air conditioning equipment, in particular to a heat exchanger and an air conditioner. The heat exchanger is applied to the air conditioner, the air conditioner has a reheating dehumidification mode, and the heat exchanger comprises a first heat exchange part, a second heat exchange part and a first throttling element; in the reheating dehumidification mode, the first heat exchange part is configured to heat air flowing through the first heat exchange part; the second heat exchange part is configured to cool and dehumidify the air flowing through the second heat exchange part; the ratio of the action area of the first heat exchange part and the air to the action area of the second heat exchange part and the air is 0.2-2; the first throttling element is arranged between the first heat exchange part and the second heat exchange part in series. The proportion of the action area of the first heat exchange part and the action area of the second heat exchange part and the air is limited, and therefore it can be effectively guaranteed that the good temperature control dehumidification effect can be achieved in the reheating dehumidification mode, and the use experience feeling of a user is improved.

The utility model provides a two-stage jet flow reflection mixing flow guide distributor, a heat exchange device and refrigeration equipment. The two-stage jet flow reflection mixing flow guide distributor comprises a cavity, a liquid inlet pipe, a two-stage jet flow reflection mixing component and a plurality of branch pipes. The two-stage jet flow reflection mixing component comprises a first-stage reflection mixing plate, a second-stage jet flow hole plate and a second-stage reflection mixing plate which are sequentially distributed in the cavity at intervals in the flowing direction of the refrigerant. The first-stage reflecting and mixing plate is distributed opposite to the inflow end of the cavity so as to reflect and mix a refrigerant injected into the cavity from the liquid inlet pipe, and a plurality of overflowing holes are formed in the first-stage reflecting and mixing plate. The second-stage jet flow hole plate and the first-stage reflection mixing plate define a jet flow cavity, and a second-stage jet flow hole is formed in the jet flow cavity. The second-stage reflection mixing plate is opposite to the second-stage jet flow holes and is provided with a plurality of flow guide holes of which the number is the same as that of the shunting branch pipe holes; and each flow guide hole is basically coaxial with the corresponding shunting branch pipe hole. And the plurality of branch pipes are respectively welded and connected in the plurality of shunting branch pipe holes in the outflow end of the cavity.

The present invention provides an outdoor unit of a heat pump unit, comprising: a fin heat exchanger, including a left end plate, a right end plate and fins, wherein a first heat exchange component and a second heat exchange component are sequentially arranged in the fins from top to bottom, the first heat exchange component includes m first heat exchange copper tubes stacked from top to bottom, and the second heat exchange component includes n second heat exchange copper tubes stacked from top to bottom; a gas collecting pipe, and the first ends of the m first heat exchange copper tubes and the n second heat exchange copper tubes are all connected to the gas collecting pipe; a liquid separation component, including a first liquid separation pipe, a second liquid separation pipe and a first one-way valve, the second liquid separation pipe is connected to the first liquid separation pipe through the first one-way valve, and the flow direction of the first one-way valve is from the second liquid separation pipe to the first liquid separation pipe; the first liquid separation pipe includes a brass distributor, the brass distributor is connected to the second ends of the m first heat exchange copper tubes and the second liquid separation pipe through pipelines, and the second liquid separation pipe is connected to the second ends of the n second heat exchange copper tubes through pipelines, and it has good defrosting effect.

The utility model provides a high-power refrigerating and heating device, which belongs to the technical field of refrigerating and heating and comprises a power mechanism, a multi-linkage transmission mechanism and a plurality of solid elastic clamping heat regenerators. The multi-linkage transmission mechanism is provided with a power input end and a plurality of power output ends, and the power input end is connected with the power mechanism; and the plurality of solid elastic clamping heat regenerators are respectively connected with different power output ends on the multi-linkage transmission mechanism so as to refrigerate or heat under the driving of the power output ends. According to the multi-linkage transmission mechanism, a set of power mechanism can be utilized to drive a plurality of solid elastic clamping heat regenerators suitable for operation of elastic clamping materials to conduct refrigeration or heating, then the solid elastic clamping heat regenerators are gathered, and enough heating capacity or refrigerating capacity can be obtained; in this way, the problem that materials cannot bear the heat due to the fact that the solid elastic clamping heat regenerator is designed to be too large can be solved, enough heating capacity or refrigerating capacity can be provided, and the requirements in practical application are met.

The application discloses a heat management integrated module, a shunt component and a first heat exchanger connection, the first interface of the shunt component can be in communication with the second interface and the third interface at the same time; the throttling channel of the first heat exchanger has a throttling function, the first flow channel and the second flow channel are isolated from each other in the first heat exchanger, and the throttling channel and the first flow channel can be in communication; the second interface is in communication with the throttling channel, and the third interface can be in communication with the second flow channel. In the application, the shunt component has a shunt function, the first heat exchanger has a throttling channel capable of realizing a throttling function, when the heat management integrated module is in an operating state, two fluid streams shunted through the shunt component realize heat exchange in the first heat exchanger, the first heat exchanger integrates the throttling function and the heat exchange function, part of the pipeline can be shortened or cancelled, and thus the occupied space of the heat management integrated module can be reduced. The application also provides a heat management system capable of reducing the occupied space.

The refrigeration house condenser waste heat recovery energy-saving system comprises a refrigeration module, the refrigeration module is connected with a first heat energy recovery module, and the first heat energy recovery module is connected with a user side; the refrigeration module comprises a compressor, a first condenser, a first expansion valve and a first evaporator, the compressor is communicated with the first condenser, the first condenser is communicated with the first expansion valve, the first expansion valve is communicated with the first evaporator, and the first evaporator is communicated with the compressor; the first heat energy recovery module comprises a first water pump and a first adjusting valve connected with the first water pump in parallel, and the first adjusting valve and the first water pump are connected with a water supply source and communicate with the first condenser. The first condenser is connected with a second regulating valve, the second regulating valve is respectively communicated with one end port of a third regulating valve and one end port of a fourth regulating valve, the third regulating valve is communicated with the first condenser, and the fourth regulating valve is connected with a user side. The system improves the utilization rate of primary energy in the operation process of the refrigeration house.

To reduce heat exchangers having different functions from being thermally affected by each other, and to respond to a desired temperature requirement for a temperature adjustment target. Provided is a refrigerant unit 10 including a refrigerant circuit and a single support member 12 that collectively supports components of the refrigerant circuit. The refrigerant circuit includes a first heat exchanger 30 and second heat exchangers 41, 42 having different functions. The first heat exchanger is disposed between the plurality of the second heat exchangers. A distance from one side of the plurality of second heat exchangers to the first heat exchanger is greater than a distance from the other side of the plurality of second heat exchangers to the first heat exchanger.

According to the refrigeration extractor hood system and the control method thereof, a first three-way valve and a first temperature sensor for detecting the temperature of an exhaust pipe are installed on the exhaust pipe of a refrigeration system, a first heat exchange pipe is installed on the volute annular wall of an oil smoke suction fan, and a first port of the first three-way valve communicates with an outlet of a compressor; a second port of the first three-way valve is communicated with an inlet of the condenser, a third port of the first three-way valve is communicated with an inlet of the first heat exchange pipe, an outlet of the first heat exchange pipe is communicated with an inlet of the condenser, and the controller receives output signals of the first temperature sensor and correspondingly controls the first three-way valve. The controller of the system adjusts the guiding of the three-way valve according to the temperature of the exhaust pipe, and adjusts the amount of refrigerant entering the first heat exchanger on the volute annular wall, so that the temperature of the volute annular wall reaches a grease melting point, grease can smoothly flow into an oil cup, and the volute is self-cleaned. In addition, an oil fume suction fan is used for conducting auxiliary heat dissipation on the heat dissipation module, and oil fume is subjected to grease separation by means of the cooling capacity of the refrigerating system.

The invention belongs to the technical field of refrigeration, and discloses a leakage detection and protection system and method for an oil-containing refrigeration system, which integrates audio frequency acquisition, processing identification, analysis decision and signal output, and realizes real-time detection of leakage of a refrigerant in an air conditioner pipeline. Meanwhile, two pressure relief protection schemes of a negative pressure protection system and a capacity expansion protection system are combined, and the pipeline pressure can be rapidly reduced while the leakage area is blocked. Therefore, quick response can be ensured when leakage occurs, the system is effectively prevented from being damaged, leakage detection and protection are efficiently achieved, the whole process is automatically operated, manual intervention is not needed, and the safety and reliability of the system can be greatly improved.