CN113982735A - Power pack cooling system of railway vehicle and control method - Google Patents
Power pack cooling system of railway vehicle and control method Download PDFInfo
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- CN113982735A CN113982735A CN202111389498.1A CN202111389498A CN113982735A CN 113982735 A CN113982735 A CN 113982735A CN 202111389498 A CN202111389498 A CN 202111389498A CN 113982735 A CN113982735 A CN 113982735A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2070/00—Details
- F01P2070/50—Details mounting fans to heat-exchangers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention provides a power pack cooling system and a control method of a railway vehicle, wherein the power pack comprises: diesel engines, gearboxes and generators; the diesel engine is connected with the gearbox; the gearbox is connected with a wheel pair of the railway vehicle; the generator is connected with electric equipment of the railway vehicle; the cooling system is respectively connected with the diesel engine, the gearbox and the generator, and cooling media in the cooling system are used for cooling the diesel engine, the gearbox and the generator. According to the power pack cooling system and the control method of the railway vehicle, the cooling of the diesel engine, the cooling of the generator and the cooling of the gearbox are arranged in a comprehensive mode, and the cooling by using the cooling loop of the diesel engine together is realized.
Description
Technical Field
The invention relates to the technical field of railway vehicles, in particular to a power pack cooling system of a railway vehicle and a control method.
Background
The power pack of the existing railway vehicle needs to cool gearbox oil, a generator, a diesel engine and pressurized air, and has a plurality of cooling parts and a complex cooling loop.
Disclosure of Invention
The invention provides a power pack cooling system of a railway vehicle, which is used for solving the defects that in the prior art, a power pack of the railway vehicle needs to cool gearbox oil, a generator, a diesel engine and pressurized air, a plurality of cooling parts are needed, and a cooling loop is complex.
The invention also provides a control method of the power pack cooling system of the railway vehicle, which is used for solving the defects that the power pack of the railway vehicle needs to cool the gearbox oil, the generator, the diesel engine and the pressurized air, a plurality of cooling parts and a complex cooling loop in the prior art, and realizes the cooling of the gearbox oil, the generator and the diesel engine by regulating and controlling the cooling medium of the diesel engine cooling loop.
According to a first aspect of the present invention there is provided a power pack cooling system for a rail vehicle, the power pack comprising: diesel engines, gearboxes and generators;
the diesel engine is connected with the gearbox;
the gearbox is connected with a wheel pair of the railway vehicle;
the generator is connected with electric equipment of the railway vehicle;
the cooling system is respectively connected with the diesel engine, the gearbox and the generator, and cooling media in the cooling system are used for cooling the diesel engine, the gearbox and the generator.
According to one embodiment of the invention, the method comprises the following steps: the cooling system comprises a cooling pump, a first exchanger, a first pipeline and a second pipeline;
the first exchanger is arranged in parallel with the generator;
the liquid inlet end of the cooling pump is connected with the liquid outlet end of the generator through the first exchanger after being connected in parallel;
the liquid outlet end of the cooling pump is connected with the liquid inlet end of the diesel engine;
the liquid outlet end of the diesel engine is connected with the liquid inlet end of the generator through the first exchanger after being connected in parallel;
the first pipe forms a loop among the cooling pump, the diesel engine, the generator and the first exchanger;
the second circuit forms a circuit between the first exchanger and the gearbox;
wherein the cooling medium in the first pipeline flows through the cooling pump, the diesel engine, the generator and the first exchanger to form a first cooling passage for cooling the diesel engine and the generator;
and after the transmission oil in the second pipeline flows through the first exchanger to obtain cold energy, the transmission oil enters the gearbox to form a second cooling passage, and the second cooling passage is used for cooling the gearbox.
Specifically, the present embodiment provides an implementation of a cooling pump, a first exchanger, a first pipeline, and a second pipeline, where the cooling pump implements a flow of a cooling medium, the first pipeline implements cooling of a diesel engine and a generator by the cooling medium, and a cooling loop of the generator is coupled with a cooling loop of the diesel engine, thereby reducing an arrangement of the cooling pipelines.
Furthermore, the transmission oil in the second pipeline exchanges cold energy with the cooling medium in the first pipeline through the first exchanger, and the transmission oil which obtains the cold energy enters the gearbox through the second pipeline.
According to an embodiment of the present invention, further comprising: the cooling system comprises a temperature control valve, a first radiator and a first cooling fan;
the liquid inlet end of the temperature control valve is connected with the liquid outlet end of the diesel engine through the first pipeline;
a first liquid outlet end of the temperature control valve is connected with the liquid inlet ends of the generator and the first exchanger which are connected in parallel through the first pipeline;
the second liquid outlet end of the temperature control valve is connected with the liquid inlet end of the first radiator through the first pipeline;
the liquid outlet end of the first radiator is connected with the liquid inlet ends of the generator and the first exchanger which are connected in parallel through the first pipeline;
the first cooling fan is arranged corresponding to the first radiator and used for cooling the cooling medium flowing through the first radiator.
Specifically, the present embodiment provides an implementation manner of a thermostat valve, a first radiator, and a first cooling fan, and since the cooling medium in the first pipeline cools the diesel engine, the generator, and the transmission respectively, there may be a temperature at which the temperature of the medium in the cold area is too high, and at this time, the temperature of the cooling medium needs to be lowered.
Further, the temperature control valve is a valve body at least having a three-way valve, and can adjust opening and closing of each valve port.
In a possible embodiment, when the thermostatic valve detects that the temperature of the cooling medium is lower than a preset value, the cooling medium circulates only in the diesel engine, the generator and the first exchanger, forming a small loop.
In a possible implementation mode, when the temperature of the cooling medium is monitored by the temperature control valve to be higher than a preset value, the cooling medium flows into the first radiator to be cooled, the first cooling fan is arranged corresponding to the first radiator, the cooling of the cooling medium is achieved, and a large loop is formed.
In a possible embodiment, the first cooling fan is driven by a hydrostatic motor, so that stepless speed regulation can be realized.
According to an embodiment of the present invention, further comprising: the second cooling fan is connected with the third pipeline;
the liquid outlet end of the supercharger is connected with the liquid inlet end of the second radiator;
the liquid outlet end of the second radiator is connected with the air inlet end of the diesel engine;
the air outlet end of the diesel engine is communicated with the external environment;
the second cooling fan is arranged corresponding to the second radiator and used for cooling air flowing through the second radiator;
wherein, the external air enters from the air inlet end of the third pipeline and flows through the supercharger for supercharging;
and the pressurized air flows through the second radiator to be cooled, and the cooled air enters the air inlet end of the diesel engine through the third pipeline.
Specifically, this embodiment provides an implementation mode of booster, second radiator, second cooling fan and third pipeline, through setting up the booster, has realized when external environment temperature satisfies certain condition, can cool off the diesel engine through acquireing the outside air.
Furthermore, the second radiator, the second cooling fan and the third pipeline are arranged, so that the conveying and cooling of outside air after pressurization are realized, and the cooling of the diesel engine is realized.
In a possible embodiment, the second cooling fan is driven by a hydrostatic motor, so that stepless speed regulation can be realized.
In a possible embodiment, the present invention further includes a temperature sensor, a controller, and a communication network, where the controller performs overall operation according to the corresponding external environment temperature, the external air temperature, the cooling medium temperature, the transmission oil temperature, and the like to obtain a corresponding cooling control scheme, and in order to save space, the present invention does not have much description on this, and in practical applications, reference may be made to a related control method so as to implement a related technical scheme of the present invention, and it should not be understood that the scheme of the present invention in the control method is missing or incomplete.
According to an embodiment of the present invention, further comprising: a second exchanger;
the air inlet end of the second exchanger is connected with the air outlet end of the second radiator through the third pipeline;
the first air outlet end of the second exchanger is connected with the air inlet end of the diesel engine through the third pipeline;
the liquid inlet end of the second exchanger is connected with the liquid outlet end of the diesel engine through the first pipeline;
the liquid outlet end of the second exchanger is connected with the liquid inlet ends of the generator and the first exchanger which are connected in parallel through the first pipeline;
and after the cooling medium in the first pipeline flows through the second exchanger, the cooling capacity for cooling the generator, the gearbox and the diesel engine is obtained.
Specifically, this embodiment provides an implementation mode of a second interchanger, through setting up the second interchanger, when the temperature of external environment or outside air satisfies preset conditions, carry out pressure boost and cooling back to outside cold air, still carry out the exchange of cold volume through the second interchanger to the coolant in the first pipeline, the coolant after cold volume exchange finishes provides cold volume for diesel engine, generator and gearbox, the outside air after finishing exchanging cold volume with the coolant simultaneously gets into the diesel engine to carry out the provision of cold volume to the diesel engine.
It should be noted that the diesel engine of the present embodiment performs two-dimensional cooling by the cooling medium and the external control.
According to an embodiment of the present invention, further comprising: one end of the fourth pipeline is connected with the second air outlet end of the second exchanger, and the other end of the fourth pipeline is communicated with the outside;
and the external air enters from the air inlet end of the third pipeline, flows through the second exchanger and is discharged from the fourth pipeline.
Specifically, the present embodiment provides an implementation manner of the fourth pipeline, when the external environment temperature or the external air temperature reaches a certain condition, the cooling medium or the diesel engine may be cooled by directly introducing the external air.
In a possible embodiment, the fourth pipeline is arranged so that the introduced outside air is directly discharged after exchanging cooling capacity with the cooling medium.
In a possible embodiment, the external air is introduced directly and then, respectively, is subjected to a cold exchange with a cooling medium and to a cooling of the diesel engine, during which no supercharging takes place by means of a supercharger.
It should be noted that, for the introduction of the external air, the negative pressure in the third pipeline can be realized by arranging a corresponding fan, and the like, so that the cold air is directly introduced.
According to a second aspect of the present invention, there is provided a control method for a power pack cooling system of a railway vehicle, comprising:
sending an activation signal to the cooling pump in response to the cooling signal;
the cooling pump drives a cooling medium to flow to form a first cooling passage for cooling the diesel engine and the generator;
and after cold energy is exchanged between the transmission oil of the gearbox and the cooling medium through the first exchanger, a second cooling passage for cooling the gearbox is formed.
According to an embodiment of the present invention, after the step of driving the cooling medium to flow by the cooling pump to form the first cooling path for cooling the diesel engine and the generator, the method specifically further includes:
acquiring the instant temperature of the cooling medium and judging;
and determining that the instant temperature of the cooling medium reaches a first preset temperature, and enabling the cooling medium to flow through a first radiator to obtain cold energy.
Specifically, the present embodiment provides an implementation mode in which the cooling medium obtains cooling capacity through the radiator, and the cooling medium is cooled by the first radiator, so that the cooling medium can continuously cool the diesel engine, the generator, and the transmission.
According to an embodiment of the present invention, after the step of driving the cooling medium to flow by the cooling pump to form the first cooling path for cooling the diesel engine and the generator, the method specifically further includes:
acquiring the instant temperature of the cooling medium and judging;
determining that the instant temperature of the cooling medium reaches a first preset temperature, pressurizing the outside air by flowing through a supercharger, and cooling the pressurized air by flowing through a second radiator;
the cooling medium obtains cold energy from the cooled air;
and the air which exchanges cold with the cooling medium enters the diesel engine.
Specifically, this embodiment provides an implementation mode in which the cooling medium obtains cold energy through cold air, and the diesel engine is cooled through external control, and the cold energy is exchanged between the external air and the cooling medium at the same time, so as to ensure that the cooling medium cools the diesel engine, the generator, and the transmission.
It should be noted that the diesel engine of the present embodiment performs two-dimensional cooling by the cooling medium and the external control.
According to an embodiment of the present invention, after the step of driving the cooling medium to flow by the cooling pump to form the first cooling path for cooling the diesel engine and the generator, the method specifically further includes:
acquiring the instant temperature of the cooling medium and judging;
and determining that the instant temperature of the cooling medium reaches a first preset temperature and the external environment temperature reaches a second preset temperature, and exchanging cold energy between the external air and the cooling medium through a second exchanger.
Specifically, the present embodiment provides another implementation mode in which the cooling medium obtains cooling capacity through cold air, and the cooling medium continuously cools the diesel engine, the generator, and the transmission through the direct exchange of cooling capacity between the external air and the cooling medium.
It should be noted that, the external air alone exchanges cooling capacity with the cooling medium, or the external air exchanges cooling capacity with the cooling medium on the one hand, and cools the diesel engine on the other hand, which can be selected according to the actual conditions, including the external environment temperature, the temperature of the diesel engine, the temperature of the cooling medium, and the cooling capacity required in the whole system, and there are various considerations.
One or more technical solutions in the present invention have at least one of the following technical effects: according to the power pack cooling system and the control method of the railway vehicle, the cooling of the diesel engine, the cooling of the generator and the cooling of the gearbox are arranged in a comprehensive mode, and the cooling by using the cooling loop of the diesel engine together is realized.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is one of the schematic layout diagrams of the power pack cooling system of a railway vehicle provided by the present invention;
FIG. 2 is a second schematic layout of a power pack cooling system for a rail vehicle according to the present invention;
fig. 3 is a flow chart illustrating a control method of the power pack cooling system of the railway vehicle provided by the invention.
Reference numerals:
10. a diesel engine; 20. A gearbox; 30. A generator;
40. a cooling pump; 50. A first exchanger; 60. A first pipeline;
70. a second pipeline; 80. A temperature control valve; 90. A first heat sink;
100. a first cooling fan; 110. A supercharger; 120. A second heat sink;
130. a second cooling fan; 140. A third pipeline; 150. A second exchanger;
160. a fourth pipeline.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In some embodiments of the present invention, as shown in fig. 1 and 2, the present solution provides a power pack cooling system for a rail vehicle, the power pack including: a diesel engine 10, a gearbox 20 and a generator 30; the diesel engine 10 is connected with a gearbox 20; the gearbox 20 is connected with wheel pairs of the rail vehicle; the generator 30 is connected with the electric equipment of the rail vehicle; wherein, the cooling system is respectively connected with the diesel engine 10, the gearbox 20 and the generator 30, and the cooling medium in the cooling system is used for realizing the cooling of the diesel engine 10, the gearbox 20 and the generator 30.
In detail, the invention provides a power pack cooling system of a railway vehicle, which is used for solving the defects that in the prior art, a power pack of the railway vehicle needs to cool oil of a gearbox 20, a generator 30, a diesel engine 10 and pressurized air, a plurality of cooling parts are needed, and a cooling loop is complex, and the cooling of the diesel engine 10, the generator 30 and the gearbox 20 is arranged in a coordinated manner, so that the cooling loop of the diesel engine 10 is commonly used for cooling.
In some possible embodiments of the invention, the method comprises: a cooling pump 40, a first exchanger 50, a first conduit 60 and a second conduit 70.
The first exchanger 50 is arranged in parallel with the generator 30.
The inlet end of the cooling pump 40 and the first exchanger 50 after being connected in parallel are connected with the outlet end of the generator 30.
The liquid outlet end of the cooling pump 40 is connected with the liquid inlet end of the diesel engine 10.
The liquid outlet end of the diesel engine 10 and the first exchanger 50 after being connected in parallel are connected with the liquid inlet end of the generator 30.
The first pipe 60 forms a loop between the cooling pump 40, the diesel engine 10, the generator 30 and the first exchanger 50.
The second line 70 forms a circuit between the first exchanger 50 and the gearbox 20.
Wherein the cooling medium in the first pipeline 60 flows through the cooling pump 40, the diesel engine 10, the generator 30 and the first exchanger 50 to form a first cooling path for cooling the diesel engine 10 and the generator 30.
The transmission oil in the second pipeline 70 flows through the first exchanger 50 to obtain cold energy, and then enters the gearbox 20 to form a second cooling passage, and the second cooling passage is used for cooling the gearbox 20.
Specifically, the present embodiment provides an embodiment of the cooling pump 40, the first exchanger 50, the first pipeline 60 and the second pipeline 70, the cooling pump 40 realizes the flow of the cooling medium, the first pipeline 60 realizes the cooling of the diesel engine 10 and the generator 30 by the cooling medium, and the cooling circuit of the generator 30 is coupled with the cooling circuit of the diesel engine 10, so that the arrangement of the cooling pipelines is reduced.
Further, the transmission oil in the second pipeline 70 exchanges cooling energy with the cooling medium in the first pipeline 60 through the first exchanger 50, and the transmission oil after obtaining the cooling energy enters the gearbox 20 through the second pipeline 70.
In some possible embodiments of the present invention, the method further includes: a temperature control valve 80, a first radiator 90, and a first cooling fan 100.
The inlet end of the temperature control valve 80 is connected to the outlet end of the diesel engine 10 via a first pipeline 60.
A first liquid outlet end of the temperature control valve 80 is connected with the liquid inlet ends of the generator 30 and the first exchanger 50 which are connected in parallel through a first pipeline 60.
The second liquid outlet end of the temperature control valve 80 is connected with the liquid inlet end of the first radiator 90 through the first pipeline 60.
The liquid outlet end of the first radiator 90 is connected with the liquid inlet ends of the generator 30 and the first exchanger 50 which are connected in parallel through the first pipeline 60.
A first cooling fan 100 is provided in correspondence with the first radiator 90 for cooling the cooling medium flowing through the first radiator 90.
Specifically, the present embodiment provides an implementation of the temperature control valve 80, the first radiator 90 and the first cooling fan 100, since the cooling medium in the first pipeline 60 respectively cools the diesel engine 10, the generator 30 and the transmission 20, there may be a temperature at which the temperature of the cooling medium is too high, and at this time, the temperature of the cooling medium needs to be reduced.
Further, the thermo valve 80 is a valve body having at least a three-way valve, and can adjust opening and closing of each valve port.
In a possible embodiment, when the thermostat valve 80 detects that the temperature of the cooling medium is lower than a preset value, the cooling medium circulates only in the diesel engine 10, the generator 30 and the first exchanger 50, forming a small loop.
In a possible embodiment, when the temperature control valve 80 monitors that the temperature of the cooling medium is higher than a preset value, the cooling medium flows into the first radiator 90 to be cooled, and the first cooling fan 100 is arranged corresponding to the first radiator 90 to cool the cooling medium, so as to form a large loop.
In a possible embodiment, the first cooling fan 100 is driven by a hydrostatic motor, so that stepless speed regulation can be realized.
In some possible embodiments of the present invention, the method further includes: a supercharger 110, a second radiator 120, a second cooling fan 130, and a third duct 140.
The liquid outlet end of the booster 110 is connected with the liquid inlet end of the second radiator 120.
The outlet end of the second radiator 120 is connected to the inlet end of the diesel engine 10.
The outlet end of the diesel engine 10 is connected to the external environment.
The second cooling fan 130 is disposed corresponding to the second heat sink 120, and cools air flowing through the second heat sink 120.
Wherein, the external air enters from the air inlet end of the third pipeline 140 and is pressurized by flowing through the supercharger 110.
The pressurized air flows through the second radiator 120 to be cooled, and the cooled air enters the air inlet end of the diesel engine 10 through the third pipeline 140.
Specifically, the present embodiment provides an implementation of the supercharger 110, the second radiator 120, the second cooling fan 130 and the third pipeline 140, and by providing the supercharger 110, when the external environment temperature satisfies a certain condition, the diesel engine 10 can be cooled by taking the external air.
Further, the arrangement of the second radiator 120, the second cooling fan 130 and the third pipeline 140 realizes the transportation and cooling of the pressurized outside air, and realizes the cooling of the diesel engine 10.
In a possible embodiment, the second cooling fan 130 is driven by a hydrostatic motor, allowing stepless speed regulation.
In a possible embodiment, the present invention further includes a temperature sensor, a controller, and a communication network, where the controller performs overall operation according to the corresponding external environment temperature, the external air temperature, the cooling medium temperature, the transmission oil temperature, and the like to obtain a corresponding cooling control scheme, and in order to save space, the present invention does not have much description on this, and in practical applications, reference may be made to a related control method so as to implement a related technical scheme of the present invention, and it should not be understood that the scheme of the present invention in the control method is missing or incomplete.
In some possible embodiments of the present invention, the method further includes: a second exchanger 150.
The inlet end of the second exchanger 150 is connected to the outlet end of the second radiator 120 through the third pipe 140.
The first outlet end of the second exchanger 150 is connected to the inlet end of the diesel engine 10 through a third pipe 140.
The inlet end of the second exchanger 150 is connected to the outlet end of the diesel engine 10 via a first line 60.
The outlet end of the second exchanger 150 is connected to the inlet ends of the parallel generator 30 and the first exchanger 50 through a first pipeline 60.
Wherein, after the cooling medium in the first pipeline 60 flows through the second exchanger 150, the cooling capacity for cooling the generator 30, the gearbox 20 and the diesel engine 10 is obtained.
Specifically, the present embodiment provides an implementation manner of the second exchanger 150, by providing the second exchanger 150, when the temperature of the external environment or the external air meets the preset condition, after the external cold air is pressurized and cooled, the cooling medium in the first pipeline 60 is also exchanged by the second exchanger 150, the cooling medium after the cooling exchange is completed provides cooling capacity for the diesel engine 10, the generator 30, and the transmission 20, and meanwhile, the external air after the cooling capacity exchange with the cooling medium is completed enters the diesel engine 10, and provides cooling capacity for the diesel engine 10.
It should be noted that the diesel engine 10 of the present embodiment performs two-dimensional cooling by the cooling medium and the external control.
In some possible embodiments of the present invention, the method further includes: one end of the fourth pipe 160 is connected to the second air outlet end of the second exchanger 150, and the other end of the fourth pipe 160 is communicated with the outside;
the external air enters from the air inlet end of the third pipeline 140, flows through the second exchanger 150, and is discharged from the fourth pipeline 160.
Specifically, the present embodiment provides an embodiment of the fourth pipeline 160, when the external ambient temperature or the external air temperature reaches a certain condition, the temperature of the cooling medium or the cooling of the diesel engine 10 can be reduced by directly introducing the external air.
In a possible embodiment, the fourth pipe 160 is arranged to facilitate direct discharge of the introduced outside air after exchanging cooling capacity with the cooling medium.
In a possible embodiment, the outside air is introduced directly and then, respectively, is subjected to a cold exchange with the cooling medium and to a cooling of the diesel engine 10, during which no supercharging takes place by means of the supercharger 110.
It should be noted that, for the introduction of the external air, the negative pressure in the third pipeline 140 can be realized by arranging a corresponding fan, etc., so as to directly introduce the cold air.
In some embodiments of the present invention, as shown in fig. 3, the present disclosure provides a control method of a power pack cooling system of a railway vehicle, including:
sending an activation signal to the cooling pump 40 in response to the cooling signal;
the cooling pump 40 drives the cooling medium to flow to form a first cooling path for cooling the diesel engine 10 and the generator 30;
after the transmission oil of the transmission case 20 and the cooling medium exchange cooling energy through the first exchanger 50, a second cooling passage for cooling the transmission case 20 is formed.
In detail, the invention also provides a control method of the power pack cooling system of the railway vehicle, which is used for solving the defects that the power pack of the railway vehicle needs to cool the oil of the gearbox 20, the generator 30, the diesel engine 10 and the pressurized air, a plurality of cooling parts and a complex cooling loop in the prior art, and the cooling of the oil of the gearbox 20, the generator 30 and the diesel engine 10 is realized by regulating and controlling the cooling medium of the cooling loop of the diesel engine 10.
In some possible embodiments of the present invention, after the step of driving the cooling medium to flow by the cooling pump 40 to form the first cooling path for cooling the diesel engine 10 and the generator 30, the method specifically further includes:
acquiring the instant temperature of the cooling medium and judging;
if it is determined that the instantaneous temperature of the cooling medium reaches the first preset temperature, the cooling medium flows through the first radiator 90 to obtain the cooling capacity.
Specifically, the present embodiment provides an embodiment in which the cooling medium obtains cooling capacity through the radiator, and the cooling medium is cooled by the first radiator 90, so that the cooling medium can continuously cool the diesel engine 10, the generator 30, and the transmission 20.
In some possible embodiments of the present invention, after the step of driving the cooling medium to flow by the cooling pump 40 to form the first cooling path for cooling the diesel engine 10 and the generator 30, the method specifically further includes:
acquiring the instant temperature of the cooling medium and judging;
when the instant temperature of the cooling medium is determined to reach the first preset temperature, the outside air flows through the supercharger 110 to be supercharged, and the supercharged air flows through the second radiator 120 to be cooled;
the cooling medium obtains cold energy from the cooled air;
the air having exchanged the cooling capacity with the cooling medium enters the diesel engine 10.
Specifically, the present embodiment provides an implementation mode in which the cooling medium obtains cooling capacity through cold air, the diesel engine 10 is cooled through external control, and meanwhile, the cooling capacity is exchanged between the external air and the cooling medium, so that the cooling medium is ensured to cool the diesel engine 10, the generator 30, and the transmission 20.
It should be noted that the diesel engine 10 of the present embodiment performs two-dimensional cooling by the cooling medium and the external control.
In some possible embodiments of the present invention, after the step of driving the cooling medium to flow by the cooling pump 40 to form the first cooling path for cooling the diesel engine 10 and the generator 30, the method specifically further includes:
acquiring the instant temperature of the cooling medium and judging;
if it is determined that the instantaneous temperature of the cooling medium reaches the first preset temperature and the external environment temperature reaches the second preset temperature, the external air exchanges the cooling capacity with the cooling medium through the second exchanger 150.
Specifically, the present embodiment provides another embodiment in which the cooling medium obtains cooling capacity through cold air, and the cooling medium continuously cools the diesel engine 10, the generator 30, and the transmission 20 through the direct exchange of cooling capacity between the external air and the cooling medium.
It should be noted that, the cooling capacity exchange with the cooling medium by the outside air alone, or the cooling capacity exchange with the cooling medium by the outside air on the one hand and the cooling of the diesel engine 10 on the other hand may be selected according to the actual conditions, including the outside ambient temperature, the temperature of the diesel engine 10, the temperature of the cooling medium, the cooling capacity required in the whole system, and the like, and various conditions need to be considered here.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "a manner," "a particular manner," or "some manner" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or manner is included in at least one embodiment or manner of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or mode. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or modes. Furthermore, various embodiments or modes described in this specification, as well as features of various embodiments or modes, may be combined and combined by those skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (10)
1. A power pack cooling system for a rail vehicle, the power pack comprising: diesel engines, gearboxes and generators;
the diesel engine is connected with the gearbox;
the gearbox is connected with a wheel pair of the railway vehicle;
the generator is connected with electric equipment of the railway vehicle;
the cooling system is respectively connected with the diesel engine, the gearbox and the generator, and cooling media in the cooling system are used for cooling the diesel engine, the gearbox and the generator.
2. A rail vehicle power pack cooling system as claimed in claim 1, comprising: the cooling system comprises a cooling pump, a first exchanger, a first pipeline and a second pipeline;
the first exchanger is arranged in parallel with the generator;
the liquid inlet end of the cooling pump is connected with the liquid outlet end of the generator through the first exchanger after being connected in parallel;
the liquid outlet end of the cooling pump is connected with the liquid inlet end of the diesel engine;
the liquid outlet end of the diesel engine is connected with the liquid inlet end of the generator through the first exchanger after being connected in parallel;
the first pipe forms a loop among the cooling pump, the diesel engine, the generator and the first exchanger;
the second circuit forms a circuit between the first exchanger and the gearbox;
wherein the cooling medium in the first pipeline flows through the cooling pump, the diesel engine, the generator and the first exchanger to form a first cooling passage for cooling the diesel engine and the generator;
and after the transmission oil in the second pipeline flows through the first exchanger to obtain cold energy, the transmission oil enters the gearbox to form a second cooling passage, and the second cooling passage is used for cooling the gearbox.
3. The rail vehicle power pack cooling system of claim 2, further comprising: the cooling system comprises a temperature control valve, a first radiator and a first cooling fan;
the liquid inlet end of the temperature control valve is connected with the liquid outlet end of the diesel engine through the first pipeline;
a first liquid outlet end of the temperature control valve is connected with the liquid inlet ends of the generator and the first exchanger which are connected in parallel through the first pipeline;
the second liquid outlet end of the temperature control valve is connected with the liquid inlet end of the first radiator through the first pipeline;
the liquid outlet end of the first radiator is connected with the liquid inlet ends of the generator and the first exchanger which are connected in parallel through the first pipeline;
the first cooling fan is arranged corresponding to the first radiator and used for cooling the cooling medium flowing through the first radiator.
4. A rail vehicle power pack cooling system as claimed in claim 2 or 3, further comprising: the second cooling fan is connected with the third pipeline;
the liquid outlet end of the supercharger is connected with the liquid inlet end of the second radiator;
the liquid outlet end of the second radiator is connected with the air inlet end of the diesel engine;
the air outlet end of the diesel engine is communicated with the external environment;
the second cooling fan is arranged corresponding to the second radiator and used for cooling air flowing through the second radiator;
wherein, the external air enters from the air inlet end of the third pipeline and flows through the supercharger for supercharging;
and the pressurized air flows through the second radiator to be cooled, and the cooled air enters the air inlet end of the diesel engine through the third pipeline.
5. The rail vehicle power pack cooling system of claim 4, further comprising: a second exchanger;
the air inlet end of the second exchanger is connected with the air outlet end of the second radiator through the third pipeline;
the first air outlet end of the second exchanger is connected with the air inlet end of the diesel engine through the third pipeline;
the liquid inlet end of the second exchanger is connected with the liquid outlet end of the diesel engine through the first pipeline;
the liquid outlet end of the second exchanger is connected with the liquid inlet ends of the generator and the first exchanger which are connected in parallel through the first pipeline;
and after the cooling medium in the first pipeline flows through the second exchanger, the cooling capacity for cooling the generator, the gearbox and the diesel engine is obtained.
6. The rail vehicle power pack cooling system of claim 5, further comprising: one end of the fourth pipeline is connected with the second air outlet end of the second exchanger, and the other end of the fourth pipeline is communicated with the outside;
and the external air enters from the air inlet end of the third pipeline, flows through the second exchanger and is discharged from the fourth pipeline.
7. A method of controlling a power pack cooling system for a rail vehicle according to any one of claims 1 to 6, comprising:
sending an activation signal to the cooling pump in response to the cooling signal;
the cooling pump drives a cooling medium to flow to form a first cooling passage for cooling the diesel engine and the generator;
and after cold energy is exchanged between the transmission oil of the gearbox and the cooling medium through the first exchanger, a second cooling passage for cooling the gearbox is formed.
8. The method for controlling the power pack cooling system of the railway vehicle as claimed in claim 7, wherein after the step of driving the cooling medium to flow by the cooling pump to form the first cooling path for cooling the diesel engine and the generator, the method further comprises:
acquiring the instant temperature of the cooling medium and judging;
and determining that the instant temperature of the cooling medium reaches a first preset temperature, and enabling the cooling medium to flow through a first radiator to obtain cold energy.
9. The method for controlling the power pack cooling system of the railway vehicle as claimed in claim 7, wherein after the step of driving the cooling medium to flow by the cooling pump to form the first cooling path for cooling the diesel engine and the generator, the method further comprises:
acquiring the instant temperature of the cooling medium and judging;
determining that the instant temperature of the cooling medium reaches a first preset temperature, pressurizing the outside air by flowing through a supercharger, and cooling the pressurized air by flowing through a second radiator;
the cooling medium obtains cold energy from the cooled air;
and the air which exchanges cold with the cooling medium enters the diesel engine.
10. The method for controlling a power pack cooling system of a railway vehicle according to any one of claims 7 to 9, wherein after the step of driving a cooling medium to flow by the cooling pump to form the first cooling path for cooling the diesel engine and the generator, the method further comprises:
acquiring the instant temperature of the cooling medium and judging;
and determining that the instant temperature of the cooling medium reaches a first preset temperature and the external environment temperature reaches a second preset temperature, and exchanging cold energy between the external air and the cooling medium through a second exchanger.
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| CN202111389498.1A CN113982735A (en) | 2021-11-22 | 2021-11-22 | Power pack cooling system of railway vehicle and control method |
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| CN202111389498.1A CN113982735A (en) | 2021-11-22 | 2021-11-22 | Power pack cooling system of railway vehicle and control method |
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