898 results about "Expansion tank" patented technology

The invention discloses a hydropower station expansion tank water level prediction alarm method and system, belongs to the technical field of hydropower station automatic control, and aims to solve the technical problems of limited monitoring points, high false alarm rate, response delay and the like of a traditional hydropower station expansion tank water level alarm system. According to the invention, the multi-mode sensing network is constructed, and data of the pressure sensor array, the radar level meter and the float switch group are fused, so that space continuous monitoring is realized; a three-level sensing architecture is adopted, heterogeneous data is subjected to normalization processing, and dimensional differences are eliminated; the LSTM network is used for liquid level prediction, and a self-adaptive window adjustment mechanism is combined, so that the prediction flexibility and accuracy are improved; a DQN algorithm is adopted to optimize a control strategy, fine adjustment of the liquid level is achieved by adjusting the opening degree of the valve, the accuracy, timeliness and intelligent level of water level monitoring and alarming of the expansion water tank of the hydropower station are remarkably improved, the stability of the liquid level of the water tank is ensured, the system operation efficiency is optimized, the manual intervention requirement is reduced, and safety is improved.

The invention provides an integrated containment pressure suppression, filtration and discharge system. The integrated containment pressure suppression, filtration and discharge system comprises a containment, a discharge valve, a discharge pipeline, a spray pipe, a first-stage pressure suppression water tank, a second-stage pressure suppression water tank, a baffle plate steam-water separator, an expansion tank, a rupture disk structure, a combined metal fiber filter layer, a radioactivity monitor, a first stop valve and a second stop valve. The two-stage pressure suppression water tank is arranged, the high removal efficiency of airborne radioactive substances is achieved through two-stage bubbling water washing, then the combined metal fiber filter is arranged by means of an existing cabin, and the requirements for rapid pressure reduction and radioactive substance removal of the containment under the LOCA accident working condition can be met; meanwhile, the problem that the containment filtering and discharging system of the existing nuclear power station occupies too many resources is solved, and the economical efficiency is high.

The invention relates to the technical field of energy conservation and new energy, and discloses an electric vehicle integrated heat management system which comprises a refrigerant loop and a cooling liquid loop. The refrigerant loop and the cooling liquid loop realize heat interaction through the plate heat exchanger; a compressor, an eight-way valve, an in-cabin heat exchanger, a gas-liquid separator, a first heating assembly, a first electronic expansion valve, a second electronic expansion valve, a third electronic expansion valve, a battery direct cooling plate and a first external heat exchanger are arranged on the refrigerant loop; a radiator, a three-way water valve, an electric driving system, a motor water pump, an expansion water tank, a second external heat exchanger and a second heating assembly are arranged on the cooling liquid loop. The problems that a battery electric vehicle thermal management system is numerous in component, complex in loop and high in failure rate are solved.

The invention provides a new energy automobile battery temperature control system which comprises a battery pack, a battery pack, a liquid cooling pipeline, a backflow pipeline, an expansion water tank, a first circulating pump, a heat exchange body, a second circulating pump, a heat pump system, a resistance heater and a PTC heater. The battery pack is arranged in an inner cavity of the battery pack, the liquid cooling pipeline and the backflow pipeline are both located in the inner cavity of the battery pack and surround the battery pack, and a temperature sensor is arranged in the inner cavity of the battery pack; the liquid cooling pipeline and the backflow pipeline are provided with a plurality of branches, and each branch is provided with a temperature sensor. A three-way valve is arranged at one end of the liquid cooling pipeline and one end of the backflow pipeline; the liquid cooling pipeline is connected with the first circulating pump and penetrates through the heat exchange body to form a circulating loop with the expansion water tank, the heat exchange body is connected with the second circulating pump, the other end of the backflow pipeline is connected with the heat pump system, the other end of the heat pump system is connected with the PTC heater, and one end of the first circulating pump is connected with the resistance heater.

A cooling system, comprising: - a first cooling circuit (10), the first cooling circuit having a first coolant pump (12); - a second cooling circuit (20), the second cooling circuit having a second coolant pump (22); - an expansion tank (30), the expansion tank being provided with an expansion chamber (31) for accumulating coolant, wherein the expansion chamber is connected to the second cooling circuit (20) so as to allow the expansion chamber to receive coolant from the second cooling circuit; and - a degassing device (40), the degassing device being arranged in the first cooling circuit for separating bubbles from the coolant circulating therein. The degassing device (40) is located at a position lower than the expansion tank (30) and is connected to the expansion chamber (31) via a static pipeline (5) so as to allow the bubbles separated from the coolant in the degassing device to migrate upward in the static pipeline towards the expansion chamber.

The invention discloses a liquid cooling heat exchange unit and a control method. Circulating power is provided for a system working medium through a main circulating pump; a heat exchange channel is provided for a system working medium through the plate heat exchanger; the pressure of a system working medium is balanced through the pressure stabilizing module; the pressure of a system working medium is maintained through the liquid supplementing module; impurities of a system working medium are filtered through a filter; and the valve control system is adjusted to exhaust gas and control the flow of a system working medium. The structure and the connecting mode of the pressure stabilizing module are improved, liquid in the expansion tank can circulate through the pressure difference between the two ends of the bypass pipe, the situation that only liquid near the inlet and outlet ends of a pipeline flows in the working process of the expansion tank is avoided, dead water is prevented, meanwhile, the liquid supplementing module is optimally designed, and the energy consumption is reduced. The liquid supplementing tank can empty liquid in the tank while automatic liquid supplementing is achieved, dead water in the system is further prevented, and the plate heat exchanger can be widely applied to the technical field of plate heat exchangers.

The invention discloses a thermal management control system for a small-displacement engine, belongs to the technical field of thermal management of engines, and solves the technical problem of overheating during operation of the existing small-displacement engine. The system comprises a cylinder body, a cylinder cover, a temperature control module, an air cooling radiator, a water pump, a preheater, an expansion water tank, an exhaust pipe water jacket, a control module, a radiator, a thermostat, an oil tank, a first control valve, a second control valve and a third control valve, a water heat exchanger is arranged in the oil tank, the cylinder body is provided with a first temperature sensor, and the cylinder cover is provided with a second temperature sensor. The thermostat is provided with a third temperature sensor, the oil tank is provided with a fourth temperature sensor, and the control module is electrically connected with the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor. The oil supply temperature management mode and the engine body temperature management mode are determined through the cylinder body temperature, the cylinder cover temperature, the cooling water temperature and the fuel oil temperature, so that the engine body of the small-displacement engine is prevented from being overheated, and the performance of the small-displacement engine is improved.

The invention relates to the field of liquid level monitoring, in particular to a liquid level monitoring method and system for an expansion water tank. The method comprises the following steps: acquiring an acceleration sequence of the expansion tank and liquid level sequences at different preset positions, obtaining a center frequency of a target sequence, and constructing a center frequency sequence of all the liquid level sequences; a target window sequence is obtained, the liquid level change rate at any sampling moment is calculated, a change rate sequence is constructed, and the confidence weight is calculated according to the change rate sequence and the acceleration sequence; calculating a fusion liquid level value of the target window sequence; traversing different center frequencies to obtain a plurality of fusion liquid level values corresponding to any liquid level sequence, and taking a mean value of all the fusion liquid level values as a marked liquid level value of any liquid level sequence; and monitoring the liquid level of the expansion water tank according to the obtained comprehensive liquid level value. According to the technical scheme, the precision of the liquid level monitoring result can be improved.

The invention relates to the technical field of heat management, in particular to a heat pump-based whole-vehicle heat management integrated system for a pure electric vehicle and a control method, which comprises a cooling liquid loop, a water pump I, a heater, an expansion water tank I, a motor, an electric controller, a refrigerant loop I, a refrigerant loop II, an electronic expansion valve III, a liquid cooling plate, a battery pack and an electromagnetic valve IV, two parts are integrated and optimized into one part, the number of parts is effectively reduced, the production and manufacturing cost of the whole vehicle is greatly reduced, the weight of the vehicle body is reduced, the internal space of a cabin is saved, meanwhile, a thermal system of the whole vehicle is integrated, energy is absorbed from the environment and waste heat, and the endurance mileage can be greatly increased; therefore, the problem that an existing new energy commercial vehicle heat management system occupies a large space is solved.

The invention discloses an automatic cooling circulation system and method for a high-voltage direct-current circuit breaker, and the system comprises a machine body water jacket nested at the outer side of the circuit breaker, takes away the heat generated by the circuit breaker through the circulating flow of a cooling liquid, provides cooling liquid circulation power through a water pump, and increases the heat dissipation area of the cooling liquid through a heat dissipation net. Heat exchange between cooling liquid and air is conducted, a fan is used for blowing air to a heat dissipation net, heat dissipation is accelerated, meanwhile, electric arcs of a circuit breaker are lengthened through blowing, impedance of the circuit breaker is increased, the system is connected into a diaphragm type expansion tank and a water tank, and the pressure in a cooling circulation system pipeline is adjusted. The system is high in automation operation degree, the fan and the water pump can be prevented from being in a high-power working state under the condition that the temperature is not high, the service life of equipment is prolonged, meanwhile, the system can meet the requirements of different temperature working conditions, and the application range is wide.

The utility model discloses a power battery heat management unit assembly which comprises a shell, a circulating water pump, a heat exchanger, a compressor, a condenser core body and a liquid storage drying filter are installed in the shell, an expansion water tank is further fixed outside the shell, and a circulating water inlet pipeline and a circulating water outlet pipeline are fixed in the shell. A water inlet connecting port of the circulating water inlet pipeline and a water outlet connecting port of the circulating water outlet pipeline are fixed on the shell and are exposed; an outlet of the circulating water pump is communicated with one end of a water flowing channel of the heat exchanger, and the other end of the water flowing channel is communicated with the circulating water outlet pipeline; the circulating water inlet pipeline is provided with a water supplementing opening, and the water outlet of the expansion water tank is communicated with the water supplementing opening through a pipeline. The unit assembly can simplify the work of assembly connection, and is simpler and more convenient to install.

The utility model discloses a suspension type expansion water tank for a heavy truck type, which comprises a cab welding assembly, a cooling module and an expansion water tank assembly, and the expansion water tank assembly is mounted at the bottom of the cab welding assembly and positioned above the cooling module; the expansion water tank assembly comprises an expansion water tank body, the bottom of the expansion water tank body is connected with a degassing pipeline and a water supplementing pipeline, the other end of the water supplementing pipeline is connected to a water inlet of the water pump, an expansion water tank pressure cover is installed on the upper right portion of the expansion water tank body, and an expansion water tank cover is installed on the front left portion of the expansion water tank body. A liquid level alarm sensor is installed on the left side of the bottom of the expansion water tank body. According to the suspension type expansion water tank for the heavy truck type, the expansion water tank is applied to a heavy truck cooling system, and the problems that an expansion water tank is large in occupied space, and a water supplementing pipeline and a degassing pipeline are long are solved; interference with surrounding parts is avoided, reliability of products is improved, and attractiveness is greatly improved.

A cooling system for an electric traction machine includes a looped conduit system for conducting a first cooling liquid and a circulation pump for conveying the first cooling liquid in a first circulation direction. The cooling system includes an expansion tank filled at least partially with the first cooling liquid and a gas, and a motor input terminal for fluidically connecting the looped conduit system on an input side to the electric traction machine. The cooling system includes a motor output terminal for fluidically connecting the looped conduit system on an output side to the electric traction machine and a first heat exchanger for dissipating heat from and / or supplying heat to the first cooling liquid. In the first circulation direction, the first heat exchanger is arranged downstream of the electric traction machine and connected via the motor input and output terminal and upstream of the expansion tank.

The invention relates to the technical field of automobile motor cooling, in particular to an automobile motor cooling device integrated with an intelligent temperature control system and a use method of the automobile motor cooling device. The automobile motor cooling device comprises a radiator, a fan, an expansion water tank, an electric water pump and a water pipe, the fan is installed on one side of the radiator, and the expansion water tank is connected to the upper end of one side of the radiator through the water pipe; the bottom end of one side of the radiator is connected with an electric water pump through a water pipe, the electric water pump is connected with a radiating channel in the driving motor through a water pipe, a temperature control mechanism is arranged outside the water pipe connected between the driving motor and the radiator, and an air conditioner low-pressure pipe is installed on the inner side of the upper end of the temperature control mechanism. According to the anti-freezing device, anti-freezing liquid flowing through the interior of the heat exchange pipe can be cooled through air conditioner cold air and an air conditioner low-pressure pipe in the automobile, the performance of the whole automobile for coping with the extreme environment is improved, when the external temperature is low, heat of the anti-freezing liquid flowing through the interior of the heat exchange pipe is utilized, a heating system of the electric automobile is assisted, and the anti-freezing effect is improved. And the energy loss of the electric automobile heating system is effectively reduced.

A vehicle cooling system includes a heat exchanger, upper and lower coolant hoses extending between the heat exchanger and a vehicle power system for carrying liquid coolant to and from the vehicle power system, and an expansion tank fluidly coupled to the lower coolant hose. The vehicle cooling system further includes an active coolant monitoring system that includes a coolant leak sensor that detects leakage of the liquid coolant from the vehicle cooling system and a coolant contamination sensor that detects contamination of the of liquid coolant. The vehicle cooling system further includes an electronically controllable coolant flow shutoff valve in series with the lower coolant hose adjacent a lower coolant outlet of the heat exchanger. The electronically controllable coolant flow shutoff valve is closed when the coolant pump is off and open when the coolant pump is on.

An expansion tank, a thermal management system, and a vehicle. An expansion tank (10) is for use in a vehicle, and the vehicle comprises a motor heat exchange circuit (20) and a battery heat exchange circuit (30). The expansion tank (10) comprises a tank body (100) and a flow channel assembly (200). The tank body (100) defines a fluid storage chamber (130) for storing a heat exchange fluid. The flow channel assembly (200) comprises a first flow channel portion (210) and a second flow channel portion (220). The first flow channel portion (210) and the second flow channel portion (220) jointly define a fluid replenishment passage (230) and a degassing passage (240). Both the fluid replenishment passage (230) and the degassing passage (240) are in communication with the fluid storage chamber (130), and both can communicate with the motor heat exchange circuit (20) and / or the battery heat exchange circuit (30). The first flow channel portion (210) and / or the second flow channel portion (220) is integrally connected to the tank body (100).

The utility model relates to an expansion tank assembly and a unit. The expansion tank assembly comprises an expansion tank, the expansion tank comprises a tank body and a connector part arranged at the bottom of the tank body, the tank body is provided with an inner cavity, an inlet and outlet flow channel is formed in the connector part, and the inlet and outlet flow channel communicates with the inner cavity; the valve assembly comprises a main body part, the main body part is provided with a first port, a second port and a third port, a first flow channel and a second flow channel communicated with the first flow channel are formed in the main body part, the first port and the second port are located at the two ends of the first flow channel, the third port is located at one end of the second flow channel, and the third port is connected with the connector part. The second flow channel is communicated with the inlet and outlet flow channel; the flow blocking component comprises a flow blocking plate and an installation blocking piece, the installation blocking piece is installed in the tank body and located in the inner cavity, one end of the flow blocking plate is fixedly connected with the installation blocking piece, the flow blocking plate penetrates through the second flow channel, and the other end of the flow blocking plate extends into the first flow channel. The expansion tank assembly can prevent liquid in the tank body from becoming dead water due to long-term non-flowing.

The utility model relates to the technical field of protection accessories, in particular to a protection structure and an expansion tank. The protective structure comprises a cover body and a protective cap; the cover body and the protective cap are integrally formed, or the cover body is provided with a mounting part, the mounting part is provided with a containing groove, at least part of the protective cap is located in the containing groove, the outer surface of the protective cap comprises an anti-rotation part, the groove wall of the containing groove comprises an anti-rotation matching part, and the anti-rotation matching part abuts against the anti-rotation part for limiting so as to limit rotation of the cover body relative to the protective cap; the protective cap is provided with internal threads used for being connected with external threads of the valve core. During installation, the cover body and the protective cap can be installed on the valve core together, and when disassembly is needed, the cover body and the protective cap can be screwed off from the valve core together in a rotating mode, so that the installation process is simplified, and the assembly efficiency is improved.

An activated carbon cartridge for an expansion tank for a battery cooling system is disclosed. The activated carbon cartridge includes a cartridge housing with a body and a cover. A base of the body and the cover (18) are structured to be air-permeable. Activated carbon is disposed in the cartridge housing. A seal is arranged on the base of the body for sealing against an intermediate wall of a container housing of the expansion container. A spring is supported on the lid.

The oil-immersed transformer comprises an oil tank, a relay and an oil conservator, hose connectors are fixedly installed on the oil conservator and the relay through connecting flanges respectively, positioning pipes are fixedly installed on the two hose connectors respectively, a metal hose is arranged between the two hose connectors, and the metal hose is connected with the relay. The two positioning pipes are sleeved with the two ends of the metal hose respectively, a locking assembly used for locking the metal hose is arranged on the hose connector, and a supporting assembly used for supporting the metal hose is arranged on the oil conservator. The transformer has the advantages that the expansion tank is connected with the relay through the metal hose, and the metal hose is used as a connecting medium, so that the anti-vibration performance of the joint between the expansion tank and the relay is improved, the oil leakage phenomenon caused by transportation shaking is effectively prevented, the oil leakage risk is greatly reduced, and the safety and reliability of the transformer are improved.

The invention discloses a water chilling unit, and relates to the technical field of refrigeration equipment, the water chilling unit comprises a mounting rack, and the mounting rack comprises an upper accommodating cavity and a lower accommodating cavity which are distributed up and down along a first direction; the condensing fan, the dry cooler and the condenser are sequentially arranged in the upper containing cavity in a stacked mode in the second direction, and the plate heat exchanger, the expansion tank, the circulating pump and the compressor are sequentially arranged in the lower containing cavity side by side in the third direction. The first direction, the second direction and the third direction are perpendicular to each other. Each part of the water chilling unit is divided into two parts, the two parts are arranged in the mounting frame in an up-down distribution mode, and each part is arranged in a stacked or side-by-side mode according to the appearance, so that each part of the water chilling unit can be compactly arranged in the mounting frame, the arrangement is more reasonable, the size of the water chilling unit can be reduced to a certain extent, and the occupied space is smaller.

Disclosed is an expansion tank, including a cavity structure and a degassing flow channel, where the degassing flow channel is arranged on the expansion tank, a flow guide hole is provided on the degassing flow channel, and the degassing flow channel is in communication with the cavity structure by means of the flow guide hole; and a liquid inlet and a liquid outlet are provided at two ends of the degassing flow channel respectively and are used for being in communication with a vehicle cooling system. The expansion tank of the present application satisfies a degassing requirement, reduces usage amount of pipelines and pipe clamps, and reduces weight of a vehicle body.

The invention relates to a fluid equalization tank with a receiving chamber and a wall, wherein the wall divides the receiving chamber into a plurality of subchambers. The subchambers are fluidically connected via openings in the wall.

An expansion tank for a battery cooling system may include a tank housing having a first lid and a second lid, a dryer cartridge screwable onto a threaded nipple of the first lid, a vacuum valve arranged in the first lid, and a pressure relief valve arranged in the second lid. Fresh air from an environment may enter the expansion tank via the vacuum valve and the dryer cartridge when there is a vacuum in the expansion tank. Air may be released from the expansion tank into the environment via the pressure relief valve when there is excess pressure in the expansion tank.

The invention relates to the technical field of automobile heat management, in particular to a heat management integrated module which comprises an expansion water tank assembly. The system further comprises an agent side assembly and a water side assembly, and the expansion water tank assembly and the water side assembly are both installed on the agent side assembly. The expansion water tank assembly is matched with the water side assembly to dissipate heat of a vehicle motor and a battery, and the agent side assembly is used for adjusting the temperature of a driving cab and the temperature of the battery; the system structure is simpler, the control logic is more complex, the number of pipelines and parts and the system assembling time are reduced to the maximum extent, and the machining and assembling cost is reduced; the heat management controller is used for controlling opening or closing of related components and changing a circulation loop according to the temperature control requirements of all the components, so that fine management of heat is achieved, and energy waste is reduced.

The invention provides a temperature control system and method for a low-flash-point heat-conducting medium. The temperature control system comprises a medium circulation subsystem, a heating subsystem and a cooling subsystem. The medium circulating system stores a low-flash-point medium through a first expansion tank, and the medium is driven by a main circulating pump to flow through a heat exchanger and an evaporator; the heating system stores a high-temperature heat-conducting medium through a second expansion tank, the high-temperature heat-conducting medium is heated through an electric heating pipe, and then the flow is controlled through a main adjusting valve and a bypass adjusting valve to enter a heat exchanger to indirectly exchange heat with a low-flash-point medium. The refrigerating system is connected with the evaporator to provide cooling capacity. The temperature control method comprises the following steps: preheating a high-temperature medium to 80-85% of a target temperature, and starting a main circulating pump after the high-temperature medium is stabilized; the valve and the electric heating tube are synchronously adjusted, and the opening degree of the main valve is kept to be 40-60%; the accurate temperature control stage adopts a three-section strategy: the current situation is maintained within + / -1 DEG C, only the valve is adjusted at + / -1-5 DEG C, and the valve and the electric heating tube are cooperatively adjusted when the temperature exceeds + / -5 DEG C. According to the invention, through medium isolation and hierarchical control, the safety is ensured, and accurate temperature control is realized.

The invention relates to a thermal management system for a fuel cell. The thermal management system for the fuel cell comprises a cooling water inlet pipeline, a cooling water loop pipeline, a heat exchanger, an expansion water tank, a first variable-frequency water pump, a liquid cooling unit, a PTC heater, a second variable-frequency water pump and system pipeline fittings which are combined into a cooling circulating water path, a large circulating loop, a small circulating loop and an inner circulating loop, wherein the cooling circulation water path exchanges heat with the large circulation loop through the heat exchanger; the small circulation loop is used for rapidly cooling the fuel cell stack; and the internal circulation loop is used for heating the fuel cell stack at the initial stage of low-temperature cold start. The starting efficiency of the fuel cell stack in the cold starting process can be improved, the internal core of the fuel cell stack can be rapidly cooled in the low-temperature storage stage, and the low-temperature storage time is shortened.

The utility model relates to the technical field of refrigerating systems, in particular to an expansion tank. The expansion tank comprises a tank body, a balloon and a flange assembly, the balloon is installed in the tank body, a cavity is formed in the balloon, the balloon and the tank body are coaxially arranged, the balloon is provided with an inner side close to the axis direction and an outer side away from the axis direction, the balloon is provided with an opening, and the side wall, forming the opening, of the balloon is bent towards the radial outer side to form a first turned edge; a convex rib is arranged on the side face, away from the cavity, of the first turned-over edge in a protruding mode, the flange assembly is connected with the first turned-over edge, and the convex rib abuts against the flange assembly in an interference mode. The flange assembly has the advantages that deformation is generated after the convex rib abuts against the flange assembly in an interference mode, and therefore the gap between the flange assembly and the first flanging can be filled with the convex rib, the leakproofness between the flange assembly and the first flanging is improved, and the problem of medium leakage is prevented.

A drying device for an expansion tank in a battery cooling system can be implemented in various configurations. In some configurations, the drying device includes an air-permeable, bag-like housing containing a drying agent. In another configurations, the drying device includes a dimensionally stable drying body formed from a sintered, extruded, or sprayed drying agent.

The invention discloses a liquid cooling system and a pressure control method thereof. The pressure control method comprises the following steps: acquiring a real-time environment temperature, a real-time input side temperature and a real-time input side pressure; when the liquid cooling system enters a first liquid supplementing state, the real-time input side temperature and the real-time environment temperature are compared to confirm the initial expansion temperature; calculating a real-time temperature difference value between the real-time input side temperature and the initial expansion temperature; the real-time input side pressure is compared with a preset input pressure threshold value, the real-time temperature difference value is compared with a preset temperature difference threshold value, and the working state of the pressure adjusting mechanism is adjusted according to the comparison result; according to the method disclosed by the invention, through real-time monitoring and dynamic adjustment, the system pressure of the liquid cooling system is always maintained in a suitable operation interval; and meanwhile, the demand on the volume of the expansion tank is remarkably reduced by actively adjusting the pressure, so that the overall volume of the liquid cooling system is effectively reduced, the material cost and the manufacturing cost are directly reduced by reducing the volume demand of the expansion tank, and the market competitiveness of the product is improved.