CN108674673B - Cooling system for hybrid aircraft - Google Patents
Cooling system for hybrid aircraft Download PDFInfo
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- CN108674673B CN108674673B CN201810430213.6A CN201810430213A CN108674673B CN 108674673 B CN108674673 B CN 108674673B CN 201810430213 A CN201810430213 A CN 201810430213A CN 108674673 B CN108674673 B CN 108674673B
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- 238000001816 cooling Methods 0.000 title claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 119
- 239000000110 cooling liquid Substances 0.000 claims abstract description 60
- 238000002485 combustion reaction Methods 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 239000002826 coolant Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D33/00—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
- B64D33/08—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of power plant cooling systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
- B64D27/02—Aircraft characterised by the type or position of power plants
- B64D27/026—Aircraft characterised by the type or position of power plants comprising different types of power plants, e.g. combination of a piston engine and a gas-turbine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D33/00—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
- B64D33/08—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of power plant cooling systems
- B64D33/10—Radiator arrangement
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a cooling system for a hybrid power aircraft, which comprises a first radiator and a motor cooling loop, wherein the motor cooling loop comprises a first water pump connected with the first radiator, a flow divider connected with the first water pump and used for respectively guiding cooling liquid to a generator, a generator controller, a driving motor and a driving motor controller, and a first expansion kettle used for receiving the cooling liquid flowing out of the generator, the generator controller, the driving motor and the driving motor controller. According to the cooling system for the hybrid power aircraft, the motor cooling loop is arranged to cool the generator, the generator controller, the driving motor and the driving motor controller, so that the heat dissipation performance of the driving motor, the driving motor controller, the generator and the generator controller is improved, and each part is ensured to be in an optimal working environment; and the serial expansion kettles are adopted, so that the number of parts and the overall weight are reduced, and the arrangement of the aircraft is facilitated.
Description
Technical Field
The invention belongs to the technical field of aircrafts, and particularly relates to a cooling system for a hybrid power aircraft.
Background
The hybrid power aircraft adopts a traditional internal combustion engine and a traditional battery as power sources, and drives the aircraft to work normally by using two sets of systems, namely heat energy and electric power in a mixing way. The electric power system relates to a charging process and a discharging process, four parts including a driving motor, a driving motor controller, a generator and a generator controller are needed, the parts are very sensitive to temperature, the heat dissipation power is very high, and if the heat is not dissipated in time, the normal operation of the aircraft is influenced by the fact that the temperature is too high, so that forced water cooling is needed for ensuring the normal operation of the aircraft.
At present, hybrid technology is not adopted on a navigation aircraft at home, more hybrid automobile cooling systems are adopted on automobiles, most of the existing hybrid automobile cooling systems adopt a structure form of connecting heating components in series, the premise of adopting the structure is that the pressure loss of each motor and controller components thereof is smaller, if the pressure loss is overlarge, the serial connection of the arrangement structure cannot meet the heat dissipation requirement, because the automobiles are large in batches, obvious in benefit, the development cost of the motors occupies small proportion, the aircraft yield is small, the benefit is not obvious, if the corresponding motors and controllers thereof are developed, the great cost pressure is increased, the necessary trend is realized by purchasing the motors and controllers meeting the requirements on the market, and because the manufacturers of the components are different, the specification is different, and the serial connection arrangement form is difficult to adopt.
In addition, the existing automobile cooling system is generally connected with an expansion kettle in parallel on the main cooling loop to play a role in exhausting and supplementing water, and meanwhile, the installation position of an exhaust valve of the expansion kettle is required to be higher than that of the cooling system. Firstly, the number of corresponding rubber tubes is increased, the weight is increased, and meanwhile, the installation position of the expansion kettle is limited, so that the difficulty in arrangement of an airplane is increased.
Because the aircraft is sensitive to weight and safety, the existing motor cooling system of the hybrid electric vehicle cannot meet the requirements of the aircraft, so that in order to reduce risks and reduce the weight of the system, the motor cooling system for the hybrid electric vehicle needs to be designed.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a cooling system for a hybrid power aircraft, and aims to improve the heat dissipation performance of a driving motor, a driving motor controller, a generator and a generator controller.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the cooling system for the hybrid power aircraft comprises a first radiator and a motor cooling loop, wherein the motor cooling loop is used for conveying cooling liquid in the first radiator to a generator, a generator controller, a driving motor and a driving motor controller for cooling the generator, the generator controller, the driving motor and the driving motor controller, the motor cooling loop comprises a first water pump connected with the first radiator, a flow divider connected with the first water pump and used for respectively guiding the cooling liquid to the generator, the generator controller, the driving motor and the driving motor controller, and a first expansion kettle connected with the first radiator and used for receiving the cooling liquid flowing out of the generator, the generator controller, the driving motor and the driving motor controller.
The power generator, the power generator controller, the driving motor and the driving motor controller are arranged in parallel, water inlets of the power generator, the power generator controller, the driving motor and the driving motor controller are connected with the shunt, and water outlets of the power generator, the power generator controller, the driving motor and the driving motor controller are connected with the first expansion kettle.
The motor cooling loop further comprises an overflow bottle which is connected with the first expansion kettle and used for storing cooling liquid.
The cooling system for a hybrid aircraft further comprises an internal combustion engine cooling circuit for delivering a cooling fluid to the internal combustion engine for cooling the internal combustion engine.
The internal combustion engine cooling circuit comprises a second radiator connected with the internal combustion engine and a second expansion kettle connected with the second radiator and the internal combustion engine.
The second expansion kettle is connected with the overflow bottle.
According to the cooling system for the hybrid power aircraft, the motor cooling loop is arranged to cool the generator, the generator controller, the driving motor and the driving motor controller, so that the heat dissipation performance of the driving motor, the driving motor controller, the generator and the generator controller is improved, and each part is ensured to be in an optimal working environment; and the serial expansion kettles are adopted, so that the number of parts and the overall weight are reduced, and meanwhile, the arrangement of the aircraft is facilitated, so that the arrangement of the aircraft is more flexible and free.
Drawings
The present specification includes the following drawings, the contents of which are respectively:
FIG. 1 is a schematic diagram of a cooling system for a hybrid aircraft of the present invention;
FIG. 2 is a schematic structural view of a pressure cap;
FIG. 3 is a schematic view of the structure of the pressure cap in a first open state;
FIG. 4 is a schematic view of the structure of the pressure cap in a second open state;
marked in the figure as: 1. a first water pump; 2. an ECU; 3. a shunt; 4. a drive motor controller; 5. a driving motor; 6. a generator; 7. a generator controller; 8. an overflow bottle; 9. a first expansion kettle; 10. a first heat sink; 11. a second heat sink; 12. a propeller; 13. a second expansion kettle; 14. an internal combustion engine; 15. a first connection pipe; 16. a connecting rod; 17. an intake valve; 18. a first spring; 19. a seal ring; 20. an air outlet valve; 21. an air outlet valve seat; 22. a second connection pipe; 23. a second spring; 24. a pressure cover shell; 25. spring seat.
Detailed Description
The following detailed description of the embodiments of the invention, given by way of example only, is presented in the accompanying drawings to aid in a more complete, accurate and thorough understanding of the concepts and aspects of the invention, and to aid in its practice, by those skilled in the art.
It should be noted that, in the following embodiments, the "first" and "second" do not represent an absolute distinction between structures and/or functions, and do not represent a sequential order of execution, but are merely for convenience of description.
As shown in fig. 1, the present invention provides a cooling system for a hybrid aircraft, comprising a first radiator 10 and a motor cooling circuit for delivering cooling liquid in the first radiator 10 to a generator 6, a generator controller 7, a driving motor 5 and a driving motor controller 4 for cooling the generator 6, the generator controller 7, the driving motor 5 and the driving motor controller 4, the motor cooling circuit comprising a first water pump 1 connected to the first radiator 10, a flow divider 3 connected to the first water pump 1 for guiding cooling liquid to the generator 6, the generator controller 7, the driving motor 5 and the driving motor controller 4, respectively, and a first expansion kettle 9 connected to the first radiator 10 for receiving cooling liquid flowing out from the generator 6, the generator controller 7, the driving motor 5 and the driving motor controller 4.
Specifically, as shown in fig. 1, the power system of the hybrid aircraft includes a propeller 12, a generator 6, an internal combustion engine connected to the generator 6 and driving the generator 6 to generate electricity, a driving motor 5 providing driving force to the propeller 12, a power battery providing electric energy to the driving motor 5, a generator controller 7, and a driving motor controller 4, wherein the generator controller 7 is electrically connected to the generator 6, and the driving motor 5 is electrically connected to the driving motor controller 4. The generator 6, the generator controller 7, the driving motor 5 and the driving motor controller 4 are arranged in parallel, so that the problems of different specifications of parts and different pressure losses can be solved, the water inlets of the generator 6, the generator controller 7, the driving motor 5 and the driving motor controller 4 are connected with the shunt 3, and the water outlets of the generator 6, the generator controller 7, the driving motor 5 and the driving motor controller 4 are connected with the first expansion kettle 9. The distribution problem of the flow of the cooling liquid of the four parts is solved by arranging the flow divider 3, so that the development cost is reduced, and the cooling efficiency of the product is improved.
As shown in fig. 1, the water outlet of the diverter 3 is connected with the water inlets of the generator 6, the generator controller 7, the driving motor 5 and the driving motor controller 4 through four pipelines respectively, the water inlet of the first expansion kettle 9 is connected with the water outlets of the generator 6, the generator controller 7, the driving motor 5 and the driving motor controller 4 through four pipelines respectively, the water inlet of the first water pump 1 is connected with the water outlet of the first radiator 10 through a pipeline, the water outlet of the first water pump 1 is connected with the water inlet of the diverter 3 through a pipeline, and the water outlet of the first expansion kettle 9 is connected with the water inlet of the first radiator 10 through a pipeline, so that the circulation of cooling liquid is realized. The first radiator 10 is used for cooling the cooling liquid, the first radiator 10 exchanges heat with the cooling liquid, and the first radiator 10 is an air-cooled radiator, and the structure thereof is as known to those skilled in the art and will not be described herein. The motor cooling loop adopts the first expansion kettle 9, and the first expansion kettle 9 is connected in series between the first radiator 10 and the generator 6, the generator controller 7, the driving motor 5 and the driving motor controller 4, so that the number of parts of the cooling system is reduced, the weight of the system is reduced, and the safety and the stability of the system are improved.
As shown in fig. 1, the motor cooling circuit further comprises an overflow bottle 8 connected to the first expansion tank 9 for storing a cooling liquid. The first expansion kettle 9 is an expansion kettle for storing cooling liquid in the prior art, and the structure of the first expansion kettle 9 is as known by those skilled in the art, and mainly comprises a first kettle body and a first pressure cover which is arranged on the first kettle body and is used for controlling the air pressure in the first kettle body, so that water and steam in a cooling system are separated, and the pressure in the system is kept stable. The first kettle body is of a hollow structure, cooling liquid is stored in the inner cavity of the first kettle body, the first kettle body is provided with a water inlet and a water outlet, the water inlet of the first kettle body is connected with the water outlets of the generator 6, the generator controller 7, the driving motor 5 and the driving motor controller 4 through four pipelines, and the water outlet of the first kettle body is connected with the water inlet of the first radiator 10 through pipelines. The top of the first kettle body is provided with an air outlet, and the first pressure cover is used for controlling the opening and closing of the air outlet. The first pressure cover is provided with a pressure control valve and is used for discharging air in the first kettle body outwards, the first pressure cover is arranged at the top of the first kettle body and has a set opening pressure, and the first kettle body of the first expansion kettle 9 is connected with the overflow bottle 8 through a first overflow pipe. When the air pressure in the first kettle body reaches the opening pressure of the first pressure cover, the first pressure cover is opened, the first overflow pipe is communicated with the air outlet of the first kettle body, water vapor in the first kettle body enters the overflow bottle 8 through the first overflow pipe, the overflow bottle 8 is communicated with the outside atmosphere, and the purpose of exhausting is achieved, so that air and water are thoroughly separated. The overflow bottle 8 is a hollow bottle body, and the water vapor entering the overflow bottle 8 is condensed, and becomes liquid to be accumulated in the inner cavity of the overflow bottle 8. The overflow bottle 8 has a vent hole and a first liquid passing hole, the vent hole is used for enabling the inner cavity of the overflow bottle 8 to be communicated with the outside atmosphere, the first overflow pipe is connected with the overflow bottle 8 at the first liquid passing hole of the overflow bottle 8, the vent hole is arranged at the top of the overflow bottle 8, and the first liquid passing hole is arranged at the bottom of the overflow bottle 8. When the temperature of the cooling liquid in the motor cooling loop is reduced, the air pressure in the first expansion kettle 9 is reduced, the cooling liquid in the overflow bottle 8 can be pressed back into the cooling loop under the action of the atmospheric pressure, the cooling liquid in the overflow bottle 8 flows into the first expansion kettle 9 through the first overflow pipe, and finally water flow enters the first radiator 10 from the first expansion kettle 9, and the overflow bottle 8 plays a role in supplementing water.
The overflow bottle 8 is used for exhausting, the position of the overflow bottle 8 is not limited, if a traditional parallel expansion kettle is used, the expansion kettle must be placed at the highest position, and the aircraft is more flexible and free to arrange by adopting the structure at present and is not limited by the installation position of a cooling system.
Preferably, the first water pump 1 is an electronic water pump driven by a motor, the first water pump 1 is connected with an ECU2 (electronic control unit), the ECU2 controls the rotation speed of an impeller of the first water pump 1, the rotation speed of the first water pump 1 is higher when the temperature of cooling liquid in a motor cooling loop is too high, and the rotation speed of the first water pump 1 is lower when the temperature of the cooling liquid in the motor cooling loop is too low, so that the system is ensured to be at a normal temperature.
As shown in fig. 1, the cooling system for a hybrid aircraft of the present invention further includes an engine cooling circuit for delivering a coolant to the engine for engine cooling, the engine cooling circuit including a second radiator 11 connected to the engine and a second expansion tank 13 connected to the second radiator 11 and the engine. The internal combustion engine is provided with a second water pump, the internal combustion engine is provided with the water pump, an external electronic water pump is not needed, a water inlet of the second water pump is connected with a water outlet of the second radiator 11 through a pipeline, a water outlet of the second water pump is connected with a water inlet of the second expansion kettle 13 through a pipeline, and a water outlet of the second expansion kettle 13 is connected with a water inlet of the second radiator 11 through a pipeline, so that circulation of cooling liquid is realized. The second radiator 11 is used for cooling the cooling liquid, the second radiator 11 exchanges heat with the cooling liquid, and the second radiator 11 is an air-cooled radiator, and the structure is as known by those skilled in the art and will not be described herein. And the second expansion kettle 13 is adopted in the cooling loop of the internal combustion engine, and the second expansion kettle 13 is connected in series between the second radiator 11 and the internal combustion engine, so that the number of parts of the cooling system is reduced, the weight of the system is reduced, and the safety and the stability of the system are improved. Under the drive of the internal combustion engine built-in water pump, the cooling liquid enters the internal combustion engine from the second radiator 11, then the cooling liquid flows through the cooling water chamber of the internal combustion engine, the internal combustion engine is cooled, and finally the cooling liquid enters the second expansion kettle 13.
Preferably, as shown in fig. 1, the first radiator 10 and the second radiator 11 are fixedly connected and are welded, and the two are connected into an integral structure, so that the structure is compact and the arrangement is convenient.
As shown in fig. 1, the second expansion kettle 13 is connected with the overflow bottle 8, the structure of the second expansion kettle 13 is basically the same as that of the first expansion kettle 9, the second expansion kettle 13 is an expansion kettle for storing cooling liquid in the prior art, the structure of the second expansion kettle 13 is as known by those skilled in the art, and the second expansion kettle 13 mainly comprises a second kettle body and a second pressure cover which is arranged on the second kettle body and is used for controlling the air pressure in the second kettle body, so that water and steam in a cooling system are separated, and the pressure in the system is kept stable. The second kettle body is of a hollow structure, the cooling liquid is stored in the inner cavity of the second kettle body, the second kettle body is provided with a water inlet and a water outlet, the water inlet of the second kettle body is connected with the water outlet of the second water pump through a pipeline, and the water outlet of the first kettle body is connected with the water inlet of the second radiator 11 through a pipeline. The top of the second kettle body is provided with an air outlet, and the second pressure cover is used for controlling the opening and closing of the air outlet. The second pressure cover is provided with a pressure control valve and is used for discharging air in the second kettle body outwards, the second pressure cover is arranged at the top of the second kettle body and has a set opening pressure, and the second kettle body of the second expansion kettle 13 is connected with the overflow bottle 8 through a second overflow pipe. When the air pressure in the second kettle body reaches the opening pressure of the second pressure cover, the second pressure cover is opened, the second overflow pipe is communicated with the air outlet of the second kettle body, water vapor in the second kettle body enters the overflow bottle 8 through the second overflow pipe, the overflow bottle 8 is communicated with the outside atmosphere, and the purpose of exhausting is achieved, so that steam and water are thoroughly separated. The overflow bottle 8 is a hollow bottle body, and the water vapor entering the overflow bottle 8 is condensed, and becomes liquid to be accumulated in the inner cavity of the overflow bottle 8. The overflow bottle 8 is provided with a second liquid passing hole, the second overflow pipe is connected with the overflow bottle 8 at the second liquid passing hole of the overflow bottle 8, and the second liquid passing hole is arranged at the bottom of the overflow bottle 8. When the temperature of the cooling liquid in the cooling circuit of the internal combustion engine decreases, the air pressure in the second expansion kettle 13 decreases, the cooling liquid in the overflow bottle 8 is pressed back into the cooling circuit under the action of the atmospheric pressure, the cooling liquid in the overflow bottle 8 flows into the second expansion kettle 13 through the second overflow pipe, and finally water flows from the second expansion kettle 13 into the second radiator 11.
As shown in fig. 2, the first pressure cover includes a pressure cover case, a first connection pipe, a second connection pipe, a connection rod, an intake valve, an exhaust valve cover, a spring seat, a first spring, and a second spring. The first connecting pipe is the hollow body in both ends opening and inside, and the connecting rod is worn to be equipped with in first connecting pipe center, has the clearance that lets the coolant liquid pass through between the outer disc of connecting rod and the interior disc of first connecting pipe, and the lower extreme of connecting rod is connected with the admission valve, and the upper end of connecting rod is equipped with the lug, and first connecting pipe is located between lug and the admission valve, and first spring housing is located on the connecting rod and first spring clamp is between lug and first connecting pipe, and first spring is compression spring. The lower end of the second connecting pipe is connected with an air outlet valve seat, an air outlet valve is arranged on the air outlet valve seat, a sealing ring is arranged between the air outlet valve and the air inlet valve, and the air outlet valve and the sealing ring are fixedly connected with the first connecting pipe. The second connecting pipe is lower extreme opening and inside hollow body, and second connecting pipe and first connecting pipe are coaxial setting and the diameter of second connecting pipe is greater than the diameter of first connecting pipe, are equipped with the through-hole that lets the coolant liquid pass through on the outer disc of second connecting pipe, spring holder and pressure lid shell fixed connection, the one end and the spring holder fixed connection of second connecting pipe, the other end and the venthole valve seat fixed connection of second connecting pipe, second spring housing is located on the second connecting pipe and second spring clip is between spring holder and venthole valve seat, the second spring is compression spring. The pressure cover shell is fixedly connected with the first kettle body, and the air outlet valve and the sealing ring are used for controlling the opening and closing of the air outlet of the first kettle body. The air inlet valve is matched with the sealing ring to control the opening and closing of the lower end opening of the first connecting pipe.
As shown in fig. 3, when the air pressure in the first kettle body reaches the opening pressure of the first pressure cover, the first pressure cover is in the first opening state, the sealing ring is separated from the first kettle body, the air outlet of the first kettle body is opened, the air outlet of the first kettle body is communicated with the first overflow pipe, and the water vapor in the first kettle body enters the overflow bottle 8 through the first overflow pipe. As shown in fig. 4, when the air pressure in the first expansion kettle 9 is reduced, the first pressure cover is in the second open state, the sealing ring contacts the first kettle body to close the air outlet, the air inlet valve is separated from the sealing ring to open the lower end opening of the first connecting pipe, the cooling liquid in the overflow bottle 8 flows into the first connecting pipe through the through holes arranged on the side walls of the first overflow pipe and the second connecting pipe in sequence, and finally the cooling liquid flows into the first kettle body.
The structure and working principle of the second pressure cover are the same as those of the first pressure cover, and the pressure cover shell of the second pressure cover is fixedly connected with the second kettle body.
The invention is described above by way of example with reference to the accompanying drawings. It will be clear that the invention is not limited to the embodiments described above. As long as various insubstantial improvements are made using the method concepts and technical solutions of the present invention; or the invention is not improved, and the conception and the technical scheme are directly applied to other occasions and are all within the protection scope of the invention.
Claims (4)
1. The cooling system for the hybrid power aircraft is characterized in that: the system comprises a first radiator and a motor cooling loop for conveying cooling liquid in the first radiator to a generator, a generator controller, a driving motor and a driving motor controller for cooling the generator, the generator controller, the driving motor and the driving motor controller, wherein the motor cooling loop comprises a first water pump connected with the first radiator, a flow divider connected with the first water pump and used for respectively guiding the cooling liquid to the generator, the generator controller, the driving motor and the driving motor controller, and a first expansion kettle connected with the first radiator and used for receiving the cooling liquid flowing out of the generator, the generator controller, the driving motor and the driving motor controller;
the power system of the hybrid power aircraft comprises a propeller, a generator, an internal combustion engine, a driving motor, a power battery, a generator controller and a driving motor controller, wherein the internal combustion engine is connected with the generator and drives the generator to generate electricity;
the water outlet of the diverter is connected with the water inlets of the generator, the generator controller, the driving motor and the driving motor controller through four pipelines respectively, the water inlet of the first expansion kettle is connected with the water outlets of the generator, the generator controller, the driving motor and the driving motor controller through four pipelines respectively, the water inlet of the first water pump is connected with the water outlet of the first radiator through a pipeline, the water outlet of the first water pump is connected with the water inlet of the diverter through a pipeline, and the water outlet of the first expansion kettle is connected with the water inlet of the first radiator through a pipeline to realize circulation of cooling liquid; the first radiator is used for cooling the cooling liquid, and heat exchange is carried out between the first radiator and the cooling liquid;
the motor cooling loop also comprises an overflow bottle which is connected with the first expansion kettle and used for storing cooling liquid, and the first expansion kettle mainly comprises a first kettle body and a first pressure cover which is arranged on the first kettle body and used for controlling the air pressure in the first kettle body; the first kettle body is of a hollow structure, cooling liquid is stored in an inner cavity of the first kettle body, the first kettle body is provided with a water inlet and a water outlet, the water inlet of the first kettle body is connected with a generator, a generator controller, a driving motor and the water outlet of the driving motor controller through four pipelines, and the water outlet of the first kettle body is connected with the water inlet of the first radiator through pipelines; the top of the first kettle body is provided with an exhaust port, and the first pressure cover is used for controlling the opening and closing of the exhaust port; the first pressure cover is provided with a pressure control valve and is used for discharging air in the first kettle body outwards, the first pressure cover is arranged at the top of the first kettle body and has a set opening pressure, and the first kettle body of the first expansion kettle is connected with the overflow bottle through a first overflow pipe;
when the air pressure in the first kettle body reaches the opening pressure of the first pressure cover, the first pressure cover is opened, the first overflow pipe is communicated with the air outlet of the first kettle body, water vapor in the first kettle body enters the overflow bottle through the first overflow pipe, and the overflow bottle is communicated with the outside atmosphere to achieve the purpose of exhausting, so that air and water are thoroughly separated; the overflow bottle is a hollow bottle body, and water vapor entering the overflow bottle is condensed and then becomes liquid to be accumulated in the inner cavity of the overflow bottle; the overflow bottle is provided with a vent hole and a first liquid passing hole, the vent hole is used for enabling the inner cavity of the overflow bottle to be communicated with the outside atmosphere, the first overflow pipe is connected with the overflow bottle at the first liquid passing hole of the overflow bottle, the vent hole is arranged at the top of the overflow bottle, and the first liquid passing hole is arranged at the bottom of the overflow bottle; when the temperature of the cooling liquid in the motor cooling loop is reduced, the air pressure in the first expansion kettle is reduced, the cooling liquid in the overflow bottle can be pressed back into the cooling loop under the action of atmospheric pressure, the cooling liquid in the overflow bottle flows into the first expansion kettle through the first overflow pipe, and finally water flows from the first expansion kettle into the first radiator, and the overflow bottle plays a role in supplementing water;
the cooling system for the hybrid power aircraft further comprises an internal combustion engine cooling loop for delivering cooling liquid to the internal combustion engine for cooling the internal combustion engine, wherein the internal combustion engine cooling loop comprises a second radiator connected with the internal combustion engine and a second expansion kettle connected with the second radiator and the internal combustion engine; the internal combustion engine is provided with a second water pump, a water inlet of the second water pump is connected with a water outlet of the second radiator through a pipeline, a water outlet of the second water pump is connected with a water inlet of a second expansion kettle through a pipeline, and a water outlet of the second expansion kettle is connected with a water inlet of the second radiator through a pipeline, so that circulation of cooling liquid is realized;
the second radiator is used for cooling the cooling liquid, the second radiator and the cooling liquid exchange heat, a second expansion kettle is adopted in the cooling loop of the internal combustion engine, and the second expansion kettle is connected between the second radiator and the internal combustion engine in series; under the drive of an internal combustion engine built-in water pump, cooling liquid enters the internal combustion engine from the second radiator, then the cooling liquid flows through a cooling water chamber of the internal combustion engine, so that the internal combustion engine is cooled, and finally the cooling liquid enters the second expansion kettle;
the second expansion kettle is connected with the overflow bottle and comprises a second kettle body and a second pressure cover which is arranged on the second kettle body and used for controlling the air pressure in the second kettle body; the second kettle body is of a hollow structure, the cooling liquid is stored in the inner cavity of the second kettle body, the second kettle body is provided with a water inlet and a water outlet, the water inlet of the second kettle body is connected with the water outlet of the second water pump through a pipeline, and the water outlet of the first kettle body is connected with the water inlet of the second radiator through a pipeline; the top of the second kettle body is provided with an exhaust port, and the second pressure cover is used for controlling the opening and closing of the exhaust port; the second pressure cover is provided with a pressure control valve and is used for discharging air in the second kettle body outwards, the second pressure cover is arranged at the top of the second kettle body and has a set opening pressure, and the second kettle body of the second expansion kettle is connected with the overflow bottle through a second overflow pipe; when the air pressure in the second kettle body reaches the opening pressure of the second pressure cover, the second pressure cover is opened, the second overflow pipe is communicated with the air outlet of the second kettle body, water vapor in the second kettle body enters the overflow bottle through the second overflow pipe, and the overflow bottle is communicated with the outside atmosphere to achieve the purpose of exhausting air, so that steam and water are thoroughly separated; the overflow bottle is a hollow bottle body, and water vapor entering the overflow bottle is condensed and then becomes liquid to be accumulated in the inner cavity of the overflow bottle; the overflow bottle is provided with a second liquid through hole, the second overflow pipe is connected with the overflow bottle at the second liquid through hole of the overflow bottle, and the second liquid through hole is arranged at the bottom of the overflow bottle; when the temperature of the cooling liquid in the cooling loop of the internal combustion engine is reduced, the air pressure in the second expansion kettle is reduced, the cooling liquid in the overflow bottle can be pressed back into the cooling loop under the action of the atmospheric pressure, the cooling liquid in the overflow bottle flows into the second expansion kettle through the second overflow pipe, and finally water flow enters the second radiator from the second expansion kettle;
the first pressure cover comprises a pressure cover shell, a first connecting pipe, a second connecting pipe, a connecting rod, an air inlet valve, an air outlet valve cover, a spring seat, a first spring and a second spring; the first connecting pipe is a pipe body with two open ends and hollow inside, the connecting rod is penetrated in the center of the first connecting pipe, a gap for the cooling liquid to pass through is arranged between the outer circular surface of the connecting rod and the inner circular surface of the first connecting pipe, the lower end of the connecting rod is connected with the air inlet valve, the upper end of the connecting rod is provided with a lug, the first connecting pipe is positioned between the lug and the air inlet valve, the first spring is sleeved on the connecting rod and clamped between the lug and the first connecting pipe, and the first spring is a compression spring; the lower end of the second connecting pipe is connected with an air outlet valve seat, an air outlet valve is arranged on the air outlet valve seat, a sealing ring is arranged between the air outlet valve and the air inlet valve, and the air outlet valve and the sealing ring are fixedly connected with the first connecting pipe; the second connecting pipe is a pipe body with an opening at the lower end and a hollow inside, the second connecting pipe and the first connecting pipe are coaxially arranged, the diameter of the second connecting pipe is larger than that of the first connecting pipe, a through hole for the cooling liquid to pass through is formed in the outer circular surface of the second connecting pipe, a spring seat is fixedly connected with the pressure cover shell, one end of the second connecting pipe is fixedly connected with the spring seat, the other end of the second connecting pipe is fixedly connected with the air outlet valve seat, a second spring is sleeved on the second connecting pipe, a second spring is clamped between the spring seat and the air outlet valve seat, and the second spring is a compression spring; the pressure cover shell is fixedly connected with the first kettle body, and the air outlet valve and the sealing ring are used for controlling the opening and closing of the air outlet of the first kettle body; the air inlet valve is matched with the sealing ring to control the opening and closing of the lower end opening of the first connecting pipe;
when the air pressure in the first kettle body reaches the opening pressure of the first pressure cover, the first pressure cover is in a first opening state, the sealing ring is separated from the first kettle body, the air outlet of the first kettle body is opened, the air outlet of the first kettle body is communicated with the first overflow pipe, and water vapor in the first kettle body enters the overflow bottle through the first overflow pipe;
when the air pressure in the first expansion kettle is reduced, the first pressure cover is in a second opening state, the sealing ring is in contact with the first kettle body to close the air outlet, the air inlet valve is separated from the sealing ring to open the lower end opening of the first connecting pipe, cooling liquid in the overflow bottle flows into the first connecting pipe through holes formed in the side walls of the first overflow pipe and the second connecting pipe in sequence, and finally the cooling liquid flows into the first kettle body.
2. The cooling system for a hybrid aircraft according to claim 1, wherein: the first radiator is an air-cooled radiator.
3. The cooling system for a hybrid aircraft according to claim 1, wherein: the first water pump is an electronic water pump driven by a motor, the first water pump is connected with the ECU, and the ECU controls the rotating speed of an impeller of the first water pump.
4. The cooling system for a hybrid aircraft according to claim 1, wherein: the second radiator is an air-cooled radiator.
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| CN112858138A (en) * | 2021-03-04 | 2021-05-28 | 吉林大学 | Seepage test device and method for porous medium freeze thawing process |
| JP2022157295A (en) * | 2021-03-31 | 2022-10-14 | 本田技研工業株式会社 | cooling system |
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| CN1902087A (en) * | 2003-12-30 | 2007-01-24 | 空中客车德国有限公司 | Cooling system for the cooling of heat-producing devices in an aircraft |
| CN103292512A (en) * | 2012-02-24 | 2013-09-11 | 空中客车作业有限公司 | Cooling system with a plurality of super-coolers |
| CN106494625A (en) * | 2016-11-02 | 2017-03-15 | 沈阳航空航天大学 | A kind of gas-electricity power combined system of parallel general-purpose aircraft |
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