CN113978488A - Double-power-source locomotive fusion cooling system and control method - Google Patents

Double-power-source locomotive fusion cooling system and control method Download PDF

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Publication number
CN113978488A
CN113978488A CN202111342959.XA CN202111342959A CN113978488A CN 113978488 A CN113978488 A CN 113978488A CN 202111342959 A CN202111342959 A CN 202111342959A CN 113978488 A CN113978488 A CN 113978488A
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China
Prior art keywords
cooling
power source
medium
outlet
inlet
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CN202111342959.XA
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Chinese (zh)
Inventor
董志忠
栾宝奇
陆洋
高俊帅
王小博
朱万鑫
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CRRC Dalian Co Ltd
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CRRC Dalian Co Ltd
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Priority to CN202111342959.XA priority Critical patent/CN113978488A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C7/00—Other locomotives or motor railcars characterised by the type of motive power plant used; Locomotives or motor railcars with two or more different kinds or types of motive power
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • 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
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/085—Cooling by ambient air
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling
    • 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
    • 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
    • F01P2050/00—Applications
    • F01P2050/24—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

The invention discloses a double-power-source locomotive fusion cooling system and a control method, which relate to the technical field of locomotive cooling, and the system comprises: a cooling medium channel I, a cooling medium channel II and a cooling device; the cooling medium channel I and the cooling medium channel II are respectively connected with the same inlet and the same outlet of a cooling medium cavity channel of the cooling device in a parallel mode; when the cooling device and the cooling medium channel I form a circulation loop, cooling the power source I; and when the cooling device and the cooling medium channel II form a circulating loop, the power source II is cooled. The cooling system is optimally designed, and a scheme of dual power source fusion cooling is adopted, so that the cooling efficiency of the locomotive cooling system is improved; meanwhile, the number of parts of the cooling system is reduced, the weight and the volume of the cooling system are reduced, and convenience is provided for the overall arrangement of the locomotive.

Description

Double-power-source locomotive fusion cooling system and control method
Technical Field
The invention relates to the technical field of locomotive cooling, in particular to a double-power-source locomotive cooling system and a control method.
Background
The double-power-source locomotive refers to a locomotive with two different power sources, and the power sources mainly have the following types according to the difference of consumed energy sources:
(1) a firewood generating set: fuel oil heat → electric energy → mechanical energy, and the working conditions thereof include: intra-segment scheduling, non-power line traction application, and the like.
(2) A transformer: electric network → electric energy → mechanical energy, its operation conditions include: power line operations, etc.
(3) A power battery: charging → electric → mechanical energy, its operation conditions include: intra-segment scheduling, line pulling, etc.
Each power source of the double-power-source locomotive has cooling requirements, for example, the heat of the diesel generator set is taken out by cooling water, and finally, the diesel generator set is cooled by ambient air in a cooling device; the heat of the transformer is taken out by the transformer oil, and finally cooled by ambient air in a cooling device; the heat of the power battery is taken out by cooling water, and finally cooled by ambient air in a cooling device.
At present, two power source cooling structures of a double-source power locomotive adopt a double-power source independent cooling structure form, namely, an independent cooling device is arranged for each power source.
Two power sources of the double-power-source locomotive are assumed as follows: the cooling system of the power source I is more than or equal to the cooling requirement of the power source II. The dual-power-source independent cooling structure is shown as 1 and specifically comprises: a power source I, a medium delivery pump I and a cooling device I; a power source II, a medium delivery pump II and a cooling device II. For example, in patent publication No. CN107585169A, a cooling system for a diesel-electric hybrid main locomotive, two power sources are respectively cooled by two independent cooling devices, specifically, a diesel generator set (power source I) is cooled by a plate radiator disposed on one side wall of a cooling chamber (cooling device I), and a transformer and a flow diverter (power source II) are cooled by a fin radiator disposed on the other side wall of the cooling chamber (cooling device II).
The control mode of the double-power-source independent cooling structure is as follows:
the power source I is cooled by the cooling device I, and the working cooling cycle of the power source I is shown in FIG. 2. The cooling cycle of the power source I works according to the following paths: power source I → cooling device I → medium delivery pump I → power source I.
The power source II is cooled by the cooling device II, and the working cooling cycle of the power source II is shown in figure 3. The cooling cycle of the power source II is carried out according to the following paths: power source II → cooling device II → medium delivery pump II → power source II.
The above-mentioned double dynamical source independent cooling structural style needs to set up a set of independent cooling device for each kind of power supply, has following technical shortcoming:
(1) two power sources of the double-power-source locomotive do not work simultaneously, correspondingly, two sets of cooling devices do not work simultaneously, and one set of cooling device is always in a non-working state, so that the overall cooling efficiency of the locomotive is reduced, and the overall cooling capacity of the locomotive is wasted.
(2) The two sets of cooling devices have excessive components, occupy high space and are heavy, which causes great difficulty in the overall arrangement of the locomotive.
Disclosure of Invention
In view of the above, the invention provides a hybrid cooling system of a dual-power locomotive and a control method thereof, which optimize the cooling system and improve the efficiency of the overall cooling system of the locomotive; meanwhile, the number of parts of the cooling system is reduced, the weight of the cooling system is reduced, and convenience is provided for the overall arrangement of the locomotive.
Therefore, the invention provides the following technical scheme:
in one aspect, the present invention provides a hybrid locomotive cooling system, comprising: a cooling medium channel I, a cooling medium channel II and a cooling device;
the cooling medium channel I and the cooling medium channel II are respectively connected with an inlet and an outlet of the same cooling medium cavity channel of the cooling device in a parallel mode;
when the cooling device and the cooling medium channel I form a circulation loop, cooling the power source I; and when the cooling device and the cooling medium channel II form a circulation loop, the power source II is cooled.
Furthermore, the cooling device uses ambient air as a cooling medium for cooling, the cooling device mainly comprises a radiator and a cooling fan, and the radiator is provided with the same cooling cavity channel and the same air circulation cavity channel of the same cooling medium; the cooling medium and the air exchange heat in the radiator, and the cooling fan generates airflow when working, and the airflow flows through the air flow passage of the radiator to radiate the heat of the radiator to the ambient atmosphere.
Further, the cooling medium of the power source I and the cooling medium of the power source II are the same, and the cooling medium passage I includes: a power source I, a medium delivery pump I and a check valve I; the inlet of the cooling cavity of the power source I is connected with the outlet of the medium delivery pump I through a pipeline; the outlet of the cooling cavity of the power source I is connected with the inlet of the check valve I through a pipeline;
the cooling medium passage II includes: a power source II, a medium delivery pump II and a check valve II; the inlet of the cooling cavity of the power source II is connected with the outlet of the medium delivery pump II through a pipeline; an outlet of the cooling cavity of the power source II is connected with an inlet of the check valve II through a pipeline;
the heat dissipation requirement of the power source I is greater than that of the power source II; correspondingly, the cooling medium channel I and the cooling medium channel II are respectively connected with the same inlet and the same outlet of a cooling medium cavity channel of the cooling device in a parallel connection mode; the method comprises the following steps:
the inlet of the medium conveying pump I and the inlet of the medium conveying pump II are connected with the outlet of the cooling device in a parallel mode through pipelines; and the outlet of the check valve I and the outlet of the check valve II are connected with the inlet of the cooling device in parallel through pipelines.
Further, the power source I is a diesel engine, and the power source II is a power battery.
Further, when the cooling media of the power source I and the power source II are different, the system further includes: a power source II cooling medium circulation loop; the power source II cooling medium circulation circuit comprises: a power source II, a medium delivery pump II and a heat exchanger; the inlet of the cooling cavity of the power source II is connected with the outlet of the medium delivery pump II through a pipeline; the outlet of the cooling cavity of the power source II is connected with the cooling medium inlet of the power source II in the heat exchanger through a pipeline; a cooling medium outlet of the heat exchanger power source II is connected with an inlet of the medium delivery pump II through a pipeline; a cooling cavity channel of a cooling medium of the power source I and a cooling cavity channel of a cooling medium of the power source II are respectively arranged in the heat exchanger; the two cooling media exchange heat in the heat exchanger;
the cooling medium passage I includes: a power source I, a medium delivery pump I and a check valve I; the inlet of the cooling cavity of the power source I is connected with the outlet of the medium delivery pump I through a pipeline; the outlet of the cooling cavity of the power source I is connected with the inlet of the check valve I through a pipeline;
the cooling medium passage II includes: a heat exchanger, a medium delivery pump III and a check valve II; a cooling medium inlet of the heat exchanger power source I is connected with an outlet of the medium delivery pump III through a pipeline; the outlet of the cooling medium of the heat exchanger power source I is connected with the inlet of the check valve II through a pipeline;
the heat dissipation requirement of the power source I is greater than that of the power source II; correspondingly, the cooling medium channel I and the cooling medium channel II are respectively connected with the same inlet and outlet of a cooling medium cavity channel of the cooling device in a parallel connection mode; the method comprises the following steps:
the inlet of the medium conveying pump I and the inlet of the medium conveying pump III are connected with the outlet of the cooling device in parallel through pipelines; and the outlet of the check valve I and the outlet of the check valve II are connected with the inlet of the cooling device in parallel through pipelines.
Further, the power source I is a diesel engine, and the power source II is a transformer.
In another aspect, the present invention further provides a control method of the above-mentioned hybrid locomotive fusion cooling system, where the method includes:
when the power source I works, the medium delivery pump I and the cooling device are put into operation, at the moment, the power source II does not work, and the medium delivery pump II does not put into operation; the circulation of the cooling medium for the operation of the power source I is performed by the following paths: power source I → check valve I → cooling device → medium transfer pump I → power source I;
when the power source II works, the medium delivery pump II and the cooling device are put into operation; at the moment, the power source I does not work, and the medium delivery pump I does not work; the circulation of the cooling medium for the operation of the power source II is performed according to the following paths: power source II → check valve II → cooling device → medium transfer pump II → power source II.
In another aspect, the present invention further provides a control method of the above-mentioned hybrid locomotive fusion cooling system, where the method includes:
when the power source I works, the medium delivery pump I and the cooling device are put into operation, at the moment, the power source II does not work, and the medium delivery pump II and the medium delivery pump III are not put into operation; the circulation of the cooling medium for the operation of the power source I is performed by the following paths: power source I → check valve I → cooling device → medium transfer pump I → power source I;
when the power source II works, the medium delivery pump II, the medium delivery pump III and the cooling device are put into operation, at the moment, the power source I does not work, and the medium delivery pump I does not put into operation; the circulation of the cooling medium for the operation of the power source II is performed according to the following paths: medium circulation path used by power source II: power source II → heat exchanger → medium transfer pump II → power source II; medium circulation path used by power source I: heat exchanger → check valve II → cooling device → medium transfer pump III → heat exchanger.
The invention has the advantages and positive effects that:
after the double-power-source locomotive adopts the integrated cooling scheme, the cooling requirements of the two power sources can be met through the conversion of cooling medium circulation by only adopting one cooling device, so that the cooling efficiency of a locomotive cooling system is improved; meanwhile, the number of parts of the cooling system is reduced, the weight and the volume of the cooling system are reduced, and convenience is provided for the overall arrangement of the locomotive.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a dual power source independent cooling structure in the prior art;
FIG. 2 is a schematic view of a cooling cycle of a power source I in a dual power source independent cooling structure in the prior art;
FIG. 3 is a schematic view of a cooling cycle of a power source II in a dual power source independent cooling structure in the prior art;
FIG. 4 is a schematic diagram of a cooling structure for cooling the two cooling mediums with the same power source;
FIG. 5 is a schematic view of a cooling cycle of a power source I in a fusion cooling structure of two power sources with the same cooling medium according to an embodiment of the present invention;
FIG. 6 is a schematic view of a cooling cycle of a power source II in a fusion cooling structure of two power sources with the same cooling medium according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a cooling structure for combining two power sources and different cooling mediums according to an embodiment of the present invention;
FIG. 8 is a schematic view of a cooling cycle of a power source I in a combined cooling structure of two power sources and different cooling mediums according to an embodiment of the present invention;
FIG. 9 is a schematic view of a cooling cycle of a power source II in a combined cooling structure of two power sources and different cooling mediums according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a diesel-electric hybrid cooling configuration according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a cooling cycle of a diesel engine in a hybrid cooling structure of a diesel engine and a power battery dual power source according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of a power battery operating cooling cycle in a diesel-power battery hybrid cooling structure according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of a combined cooling structure of a diesel engine-transformer dual power source according to an embodiment of the present invention;
FIG. 14 is a schematic diagram of a cooling cycle of a diesel engine in a hybrid cooling structure of a diesel engine-transformer dual power source according to an embodiment of the present invention;
fig. 15 is a schematic diagram of a working cooling cycle of a transformer in a diesel engine-transformer dual power source combined cooling structure according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be understood that the terms "I", "II", "III", and the like in the description and claims of the invention and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The double-power-source locomotive has two power sources, namely a power source I and a power source II, and has the following basic characteristics:
(1) the two power sources do not work simultaneously.
(2) The cooling requirements of the two power sources are different.
(3) The cooling medium for both power sources may be the same or different.
Assume that the cooling demand of power source I is equal to or greater than the cooling demand of power source II. Therefore, the cooling system meeting the cooling requirement of the power source I also meets the cooling requirement of the power source II, and the cooling system of the power source II can be fused into the cooling system structure of the power source I, so that the aims of improving the efficiency of the whole cooling system of the locomotive, reducing the number of parts of the cooling system and reducing the weight of the cooling system are fulfilled.
According to the practical condition of the cooling medium of the power source, the double-power-source locomotive fusion cooling has the following two structures:
the cooling medium of power source I is the same as that of power source II, power source II can directly use the cooling device of power source I, and the fusion cooling structure is shown in FIG. 4, and specifically comprises:
power source I
And setting the power source I as a power source with relatively large heat dissipation requirement in the double power sources. The power source I is provided with a cooling cavity channel, and heat generated inside the power source I is dissipated through circulation of a cooling medium I. An inlet of a cooling cavity of the power source I is connected with an outlet of the medium delivery pump I through a pipeline; and the outlet of the cooling cavity of the power source I is connected with the inlet of the check valve I through a pipeline.
Medium delivery pump I
The medium conveying pump I is responsible for conveying the cooling medium I of the power source I and establishing the cooling medium circulation of the power source I. The medium delivery pump I is provided with an inlet and an outlet for the cooling medium. The inlet of the medium delivery pump I is connected with the outlet of the cooling device through a pipeline, and the outlet of the medium delivery pump I is connected with the inlet of the cooling cavity of the power source I through a pipeline.
Cooling device
And the equipment is cooled by using ambient air as a cooling medium. The cooling device mainly includes a radiator and a cooling fan (blower) therein, and uses ambient air to cool the cooling medium. The radiator is provided with the same cooling cavity channel and the same air circulation cavity channel of the same cooling medium; the cooling medium and the air exchange heat in the radiator. When the cooling fan (blower) works, airflow with necessary speed is generated and flows through the air flow passage of the radiator, and the heat of the radiator is radiated to the ambient atmosphere. The cooling device inlet is connected with the outlet of the check valve I and the outlet of the check valve II through parallel pipelines respectively, and the cooling device outlet is connected with the inlet of the medium delivery pump I and the inlet of the medium delivery pump II through parallel pipelines respectively.
Power source II
And setting the power source II as a power source with relatively low heat dissipation requirement in the double power sources. The power source II is provided with a cooling cavity channel, and heat generated inside the power source II is dissipated through circulation of cooling media. An inlet of a cooling cavity of the power source II is connected with an outlet of the medium delivery pump II through a pipeline; and the outlet of the cooling cavity of the power source II is connected with the inlet of the check valve II through a pipeline.
Medium delivery pump II
And the medium delivery pump II is responsible for delivering the cooling medium I of the power source II and establishing the cooling medium circulation of the power source II. The medium delivery pump II is provided with an inlet and an outlet for the cooling medium. The inlet of the medium delivery pump II is connected with the outlet of the cooling device through a pipeline, and the outlet of the medium delivery pump II is connected with the inlet of the cooling cavity of the power source II through a pipeline.
Check valve I
The coolant is restricted to flow only in the direction of the arrow and not in the opposite direction. The check valve I is provided with an inlet and an outlet of a cooling medium. The inlet of the check valve I is connected with the outlet of the cooling cavity of the power source I through a pipeline, and the outlet of the check valve I is connected with the inlet of the cooling device and the outlet of the check valve II through parallel pipelines respectively.
Check valve II
The coolant is restricted to flow only in the direction of the arrow and not in the opposite direction. The check valve II is provided with an inlet and an outlet of the medium. The inlet of the check valve II is connected with the outlet of the cooling cavity of the power source II through a pipeline, and the outlet of the check valve II is connected with the inlet of the cooling device and the outlet of the check valve I through parallel pipelines respectively.
As shown in fig. 5, when the power source I is in operation, there is a heat dissipation requirement, and the medium delivery pump I and the cooling device are put into operation. At the moment, the power source II does not work, no heat dissipation requirement exists, and the medium delivery pump II does not work. The cooling cycle of the power source I works according to the following paths: power source I → check valve I → cooling device → medium transfer pump I → power source I.
As shown in fig. 6, when the power source II is working, there is a heat dissipation requirement, and the medium delivery pump II and the cooling device are put into operation. At the moment, the power source I does not work, no heat dissipation requirement exists, and the medium delivery pump I does not work. The cooling cycle of the power source II is carried out according to the following paths: power source II → check valve II → cooling device → medium transfer pump II → power source II.
And secondly, cooling media of the power source I and the power source II are different, the heat of the power source II is firstly converted into a cooling system of the power source I through a heat exchanger, and then cooling is completed through a cooling device of the power source I. The fusion cooling structure is shown in fig. 7, and specifically includes:
power source I
And setting the power source I as a power source with relatively large heat dissipation requirement in the double power sources. The power source I is provided with a cooling cavity channel, and heat generated inside the power source I is dissipated through circulation of a cooling medium I. An inlet of a cooling cavity of the power source I is connected with an outlet of the medium delivery pump I through a pipeline; and the outlet of the cooling cavity of the power source I is connected with the inlet of the check valve I through a pipeline.
Medium delivery pump I
The medium conveying pump I is responsible for conveying the cooling medium I of the power source I and establishing the cooling medium circulation of the power source I. The medium delivery pump I is provided with an inlet and an outlet for the cooling medium. The inlet of the medium delivery pump I is connected with the outlet of the cooling device through a pipeline, and the outlet of the medium delivery pump I is connected with the inlet of the cooling cavity of the power source I through a pipeline.
Cooling device
And the equipment is cooled by using ambient air as a cooling medium. The cooling device mainly comprises a radiator, a cooling fan (fan) and other components, and is responsible for dissipating heat of the power source I or the power source II to the ambient atmosphere. When a cooling fan (fan) in the cooling device works, airflow with a necessary speed is generated and flows through the air flow passage of the radiator, and the heat of the radiator is radiated to the ambient atmosphere. The radiator is provided with the same cooling cavity channel and the same air circulation cavity channel of the same cooling medium; the cooling medium and the air exchange heat in the radiator. And the cooling medium cavity inlet is respectively connected with the outlets of the check valve I and the check valve II through parallel pipelines, and the cooling medium cavity outlet is respectively connected with the inlets of the medium delivery pump I and the medium delivery pump III through parallel pipelines.
Power source II
And setting the power source II as a power source with relatively low heat dissipation requirement in the double power sources. The power source II is provided with a cooling cavity channel, and heat generated inside the power source II is dissipated through circulation of the cooling medium II. The inlet of the cooling cavity of the power source II is connected with the outlet of the medium delivery pump II through a pipeline, and the outlet of the cooling cavity of the power source II is connected with the inlet of the cooling medium of the power source II of the heat exchanger through a pipeline.
Medium delivery pump II
And the medium delivery pump II is responsible for delivering the cooling medium II of the power source II and establishing the cooling medium circulation of the power source II. The medium delivery pump II is provided with an inlet and an outlet for the cooling medium. The inlet of the medium delivery pump II is connected with the cooling medium outlet of the heat exchanger power source II through a pipeline, and the outlet of the medium delivery pump II is connected with the inlet of the cooling cavity of the power source II through a pipeline.
Heat exchanger
The heat exchanger is responsible for exchanging heat from the power source II cooling medium II cycle to the power source I cooling medium I cycle. And a cooling cavity channel of a cooling medium I of the power source I and a cooling cavity channel of a cooling medium II of the power source II are respectively arranged in the heat exchanger. An inlet of a cooling medium I of the heat exchanger power source I is connected with an outlet of the medium delivery pump III through a pipeline; and an outlet of a cooling medium I of the heat exchanger power source I is connected with an inlet of the check valve II through a pipeline. An inlet of a cooling medium II of a power source II in the heat exchanger is connected with an outlet of the power source II through a pipeline; and the outlet of the cooling medium II of the heat exchanger power source II is connected with the inlet of the medium delivery pump II through a pipeline.
Medium delivery pump III
When the power source II works, the medium conveying pump III is responsible for conveying the cooling medium I of the heat exchanger and establishing the circulation of the cooling medium I of the heat exchanger. The medium delivery pump III is provided with an inlet and an outlet for the cooling medium. The inlet of the medium delivery pump III is connected with the outlet of the cooling device through a pipeline, and the outlet of the medium delivery pump III is connected with the inlet of a cooling medium I of the power source I of the heat exchanger through a pipeline.
Check valve I
The coolant is restricted to flow only in the direction of the arrow and not in the opposite direction. The check valve I is provided with an inlet and an outlet for the medium. The inlet of the check valve I is connected with the outlet of the cooling cavity of the power source I through a pipeline, and the outlet of the check valve I is connected with the inlet of the cooling device and the outlet of the check valve II through parallel pipelines respectively.
Check valve II
The coolant is restricted to flow only in the direction of the arrow and not in the opposite direction. The check valve II is provided with an inlet and an outlet of the medium. The inlet of the check valve II is connected with the outlet of the cooling medium I of the power source I of the heat exchanger through a pipeline, and the outlet of the check valve II is connected with the inlet of the cooling device and the outlet of the check valve I through parallel pipelines respectively.
As shown in fig. 8, when the power source I is operated, there is a heat dissipation requirement, and the medium delivery pump I and the cooling device (fan) are put into operation. At the moment, the power source II does not work, no heat dissipation requirement exists, and the medium delivery pump II and the medium delivery pump III do not work. The cooling cycle of the power source I works according to the following paths: power source I → check valve I → cooling device → medium transfer pump I → power source I.
As shown in fig. 9, when the power source II is operated, there is a heat radiation demand, and at this time, cooling is performed in a two-stage cycle, and the medium delivery pump II, the medium delivery pump III, and the cooling device (fan) are put into operation. At the moment, the power source I does not work, no heat dissipation requirement exists, and the medium delivery pump I does not work. The cooling cycle of the power source II is carried out according to the following paths: first-stage circulation path: power source II → heat exchanger → medium delivery pump II → power source II. A second-stage circulation path: heat exchanger → check valve II → cooling device → medium transfer pump III → heat exchanger.
After the double-power-source locomotive fusion cooling scheme is adopted, the cooling requirements of two power sources can be met by only adopting one cooling device, the efficiency of a cooling system is improved, the weight and the volume are both greatly reduced, and convenience conditions are provided for the overall arrangement of the locomotive.
For the sake of understanding, the present invention provides a hybrid cooling system for a dual-power locomotive, which is described in detail below.
The first embodiment is as follows:
a dual-power locomotive has two power sources, diesel engine and power battery.
(1) The diesel engine and the power battery do not work simultaneously.
(2) The cooling requirement of the power battery is less than that of the diesel engine.
(3) The same cooling water is used for the cooling media of the diesel engine and the power battery.
Therefore, the fusion cooling structure using the same cooling medium with dual power sources of the present invention, as shown in fig. 10, specifically includes:
diesel engine
The first power source of the locomotive is that when the locomotive is positioned on a non-power line, the diesel engine provides running power for the locomotive. The diesel engine is internally provided with a cooling cavity, and heat generated by the diesel engine is dissipated through circulation of cooling water. The inlet of the cooling cavity is connected with the outlet of the cooling water pump I through a pipeline, and the outlet of the cooling cavity is connected with the inlet of the check valve I through a pipeline.
Cooling water pump I
The cooling water pump I is responsible for conveying cooling water and establishing cooling water circulation. The cooling water pump I is integrated with the diesel engine and driven by a crankshaft of the diesel engine. The cooling water pump I is provided with an inlet of cooling water and an outlet of the cooling water, the inlet is connected with an outlet of a cooling water cavity of a radiator of the cooling device through a pipeline, and the outlet is connected with an inlet of a cooling water cavity of the diesel engine through a pipeline.
Cooling device
Equipment using ambient air to cool cooling water. The cooling device mainly comprises a radiator, a cooling fan and a structural component, and is responsible for radiating the heat of the diesel engine or the power battery to the ambient atmosphere. The radiator is provided with the same cooling cavity channel and the same air circulation cavity channel of the same cooling medium; the cooling water and the air exchange heat in the radiator. The cooling water cavity inlet is connected with the outlets of the check valve I and the check valve II through parallel pipelines respectively, and the cooling water cavity outlet is connected with the inlets of the cooling water pump I and the cooling water pump II through parallel pipelines respectively. When a cooling fan (fan) in the cooling device works, airflow with a necessary speed is generated and flows through the air flow passage of the radiator, and the heat of the radiator is radiated to the ambient atmosphere.
Power battery
And the second power source of the locomotive is that the power battery provides running power for the locomotive when the diesel engine fails or under a specific working condition. The power battery is internally provided with a cooling cavity, and heat generated by the power battery is dissipated through circulation of cooling water. The inlet of the cooling cavity is connected with the outlet of the cooling water pump II through a pipeline, and the outlet of the cooling cavity is connected with the inlet of the check valve II through a pipeline.
Cooling water pump II
When the power battery works, the cooling water pump II is responsible for conveying cooling water and establishing cooling water circulation. The cooling water pump II is provided with an inlet and an outlet of cooling water. And the inlet of the cooling water pump II is connected with the outlet of a cooling cavity channel of the radiator in the cooling device through a pipeline, and the outlet of the cooling water pump II is connected with the inlet of a cooling cavity channel of the power battery through a pipeline.
Check valve I
The cooling water is restricted to flow only in the direction of the arrow and not in the opposite direction of the arrow. The check valve I is provided with an inlet and an outlet for the medium. The inlet of the check valve I is connected with the outlet of the cooling cavity of the diesel engine through a pipeline, and the outlet of the check valve I is respectively connected with the inlet of the cooling cavity of the radiator of the cooling device and the outlet of the check valve II through parallel pipelines.
Check valve II
The coolant is restricted to flow only in the direction of the arrow and not in the opposite direction. The check valve II is provided with an inlet and an outlet of the medium. The inlet of the check valve II is connected with the outlet of the cooling cavity of the power battery through a pipeline, and the outlet of the check valve II is connected with the inlet of the cooling cavity of the radiator of the cooling device and the outlet of the check valve I through parallel pipelines respectively.
As shown in fig. 11, when the diesel engine is in operation, there is a heat dissipation requirement, and the cooling water pump I and the cooling device are put into operation. The cooling cycle was performed by the following route: diesel engine → check valve I → cooling device → cooling water pump I → diesel engine. At the moment, the power battery does not work, no heat dissipation requirement exists, and the cooling water pump II does not work.
As shown in fig. 12, when the power battery works, there is a heat dissipation requirement, and the cooling water pump II and the cooling device are put into operation. The cooling cycle was performed by the following route: power battery → check valve II → cooling device → cooling water pump II → power battery. At the moment, the diesel engine does not work, no heat dissipation requirement exists, and the cooling water pump I does not work.
After the diesel engine-power battery double-power-source locomotive adopts the integrated cooling scheme, the cooling requirements of the diesel engine and the power battery can be met by only adopting one cooling device, the efficiency of a cooling system is improved, the weight and the volume are greatly reduced, and convenience is provided for the overall arrangement of the locomotive.
Example two
A dual-power locomotive has two power sources, which are diesel engine and transformer (power supply network).
(1) The diesel engine and the transformer do not work simultaneously.
(2) The cooling requirement of the transformer is less than the cooling requirement of the diesel engine.
(3) The cooling medium of the transformer is mineral oil, and the cooling medium of the diesel engine is cooling water.
Therefore, the structure of the fusion cooling structure using different cooling media with dual power sources of the present invention is shown in fig. 13, and specifically includes:
diesel engine
The first power source of the locomotive is that when the locomotive is positioned on a non-power line, the diesel engine provides running power for the locomotive. The diesel engine is internally provided with a cooling cavity, and heat generated by the diesel engine is dissipated through circulation of cooling water. The inlet of the cooling cavity is connected with the outlet of the cooling water pump I through a pipeline, and the outlet of the cooling cavity is connected with the inlet of the check valve I through a pipeline.
Cooling water pump I
The cooling water pump I is responsible for conveying cooling water and establishing cooling water circulation. The cooling water pump I is integrated with the diesel engine and driven by a crankshaft of the diesel engine. The cooling water pump I is provided with an inlet of cooling water and an outlet of the cooling water, the inlet is connected with an outlet of a cooling medium cavity of a radiator of the cooling device through a pipeline, and the outlet is connected with an inlet of a cooling cavity of the diesel engine through a pipeline.
Cooling device
Equipment using ambient air to cool cooling water. The cooling device mainly comprises a radiator, a cooling fan and a structural component, and is responsible for dissipating the heat of the diesel engine or the transformer to the ambient atmosphere. The radiator is provided with the same cooling cavity channel and the same air circulation cavity channel of the same cooling medium; the cooling water and the air exchange heat in the radiator. The cooling water cavity inlet is connected with the outlets of the check valve I and the check valve II through parallel pipelines respectively, and the cooling water cavity outlet is connected with the inlets of the cooling water pump I and the cooling water pump II through parallel pipelines respectively. When a cooling fan (fan) in the cooling device works, airflow with a necessary speed is generated and flows through the air flow passage of the radiator, and the heat of the radiator is radiated to the ambient atmosphere.
Transformer device
When the locomotive is positioned on the power line, the electric energy of the power grid is processed by the transformer and then drives the traction motor to provide running power for the locomotive. The cooling cavity channel is arranged in the transformer, and heat generated by the transformer is dissipated through circulation of transformer oil. The inlet of the cooling cavity is connected with the outlet of the transformer oil pump through a pipeline, and the outlet of the cooling cavity is connected with the inlet of the transformer oil cooling cavity of the heat exchanger through a pipeline.
Transformer oil pump
The transformer oil pump is responsible for conveying transformer oil and establishing transformer oil cooling circulation. The transformer oil pump is provided with an inlet and an outlet of the transformer oil. The inlet of the transformer oil pump is connected with the outlet of a transformer oil cooling cavity of the heat exchanger through a pipeline, and the outlet of the medium delivery pump II is connected with the inlet of a power source II cooling cavity through a pipeline.
Heat exchanger
The heat exchanger is responsible for transferring heat of the transformer oil circulation to the cooling water circulation. The inside of the heat exchanger is respectively provided with a cooling water cooling cavity channel and a transformer oil cooling cavity channel. The cooling water cooling cavity inlet is connected with the outlet of the cooling water pump II through a pipeline, and the cooling water cooling cavity outlet is connected with the inlet of the check valve II through a pipeline. The inlet of the transformer oil cooling cavity is connected with the outlet of the transformer through a pipeline, and the outlet of the transformer oil cooling cavity is connected with the inlet of the transformer oil pump through a pipeline.
Cooling water pump II
When the transformer works, the cooling water pump II is responsible for conveying cooling water and establishing cooling water circulation of the heat exchanger. The cooling water pump II is provided with an inlet and an outlet of cooling water. The inlet of the cooling water pump II is connected with the outlet of the cooling cavity channel of the radiator in the cooling device through a pipeline, and the outlet of the cooling water pump II is connected with the inlet of the cooling water cooling cavity channel of the heat exchanger through a pipeline.
Check valve I
The cooling water is restricted to flow only in the direction of the arrow and not in the opposite direction of the arrow. The check valve I is provided with an inlet and an outlet for the medium. The inlet of the check valve I is connected with the outlet of the cooling cavity of the diesel engine through a pipeline, and the outlet of the check valve I is respectively connected with the inlet of the cooling cavity of the radiator of the cooling device and the outlet of the check valve II through parallel pipelines.
Check valve II
The coolant is restricted to flow only in the direction of the arrow and not in the opposite direction. The check valve II is provided with an inlet and an outlet of the medium. The inlet of the check valve II is connected with the outlet of the cooling water cooling cavity of the heat exchanger through a pipeline, and the outlet of the check valve II is connected with the inlet of the radiator cooling cavity of the cooling device and the outlet of the check valve I through parallel pipelines respectively.
As shown in fig. 14, when the diesel engine is in operation, there is a heat dissipation requirement, and the cooling water pump I and the cooling device are put into operation. At the moment, the transformer does not work, no heat dissipation requirement exists, and the transformer oil pump and the cooling water pump II do not work. The cooling cycle was performed by the following route: diesel engine → check valve I → cooling device → cooling water pump I → diesel engine.
As shown in fig. 15, when the transformer works, there is a heat dissipation requirement, and at this time, the transformer oil pump, the cooling water pump II, and the cooling device are put into operation by two-stage circulation cooling. At the moment, the diesel engine does not work, no heat dissipation requirement exists, and the cooling water pump I does not work. The first stage cooling medium circulation path is as follows: transformer → heat exchanger → transformer oil pump → transformer. The second-stage cooling medium circulation path is as follows: heat exchanger → check valve II → cooling device → cooling water pump II → heat exchanger.
After the diesel engine-transformer dual-power locomotive adopts the integrated cooling scheme, the cooling requirements of the diesel engine and the transformer can be met through the conversion of cooling medium circulation by only adopting one cooling device, so that the cooling efficiency of a locomotive cooling system is improved; meanwhile, the number of parts of the cooling system is reduced, the weight and the volume of the cooling system are reduced, and convenience is provided for the overall arrangement of the locomotive.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. A hybrid cooling system for a dual-power locomotive, the system comprising: a cooling medium channel I, a cooling medium channel II and a cooling device;
the cooling medium channel I and the cooling medium channel II are respectively connected with the same inlet and the same outlet of a cooling medium cavity channel of the cooling device in a parallel mode;
when the cooling device and the cooling medium channel I form a circulation loop, cooling the power source I; and when the cooling device and the cooling medium channel II form a circulation loop, the power source II is cooled.
2. The hybrid cooling system of two power locomotives according to claim 1, wherein the cooling device uses ambient air as a cooling medium for cooling, and the cooling device mainly comprises a radiator and a cooling fan inside, the radiator is provided with a same cooling cavity channel of the same cooling medium and a same air circulation cavity channel; the cooling medium and the air exchange heat in the radiator, and the cooling fan generates airflow when working, and the airflow flows through the air flow passage of the radiator to radiate the heat of the radiator to the ambient atmosphere.
3. The hybrid cooling system of two power locomotives according to claim 1, wherein the cooling mediums of the power source I and the power source II are the same, and the cooling medium channel I comprises: a power source I, a medium delivery pump I and a check valve I; the inlet of the cooling cavity of the power source I is connected with the outlet of the medium delivery pump I through a pipeline; the outlet of the cooling cavity of the power source I is connected with the inlet of the check valve I through a pipeline;
the cooling medium passage II includes: a power source II, a medium delivery pump II and a check valve II; the inlet of the cooling cavity of the power source II is connected with the outlet of the medium delivery pump II through a pipeline; an outlet of the cooling cavity of the power source II is connected with an inlet of the check valve II through a pipeline;
the heat dissipation requirement of the power source I is greater than that of the power source II; correspondingly, the cooling medium channel I and the cooling medium channel II are respectively connected with the same inlet and the same outlet of a cooling medium cavity channel of the cooling device in a parallel connection mode; the method comprises the following steps:
the inlet of the medium conveying pump I and the inlet of the medium conveying pump II are connected with the outlet of the cooling device in a parallel mode through pipelines; and the outlet of the check valve I and the outlet of the check valve II are connected with the inlet of the cooling device in parallel through pipelines.
4. The hybrid cooling system of two power locomotives according to claim 3, wherein said power source I is a diesel engine and said power source II is a power battery.
5. The hybrid cooling system for locomotives with dual power sources as defined in claim 1, wherein when the cooling mediums of the power source I and the power source II are different, said system further comprises: a power source II cooling medium circulation loop;
the power source II cooling medium circulation circuit comprises: a power source II, a medium delivery pump II and a heat exchanger; the inlet of the cooling cavity of the power source II is connected with the outlet of the medium delivery pump II through a pipeline; the outlet of the cooling cavity of the power source II is connected with the cooling medium inlet of the power source II in the heat exchanger through a pipeline; a cooling medium outlet of the heat exchanger power source II is connected with an inlet of the medium delivery pump II through a pipeline;
a cooling cavity channel of a cooling medium of the power source I and a cooling cavity channel of a cooling medium of the power source II are respectively arranged in the heat exchanger; the two cooling media exchange heat in the heat exchanger;
the cooling medium passage I includes: a power source I, a medium delivery pump I and a check valve I; the inlet of the cooling cavity of the power source I is connected with the outlet of the medium delivery pump I through a pipeline; the outlet of the cooling cavity of the power source I is connected with the inlet of the check valve I through a pipeline;
the cooling medium passage II includes: a heat exchanger, a medium delivery pump III and a check valve II; a cooling medium inlet of the heat exchanger power source I is connected with an outlet of the medium delivery pump III through a pipeline; the outlet of the cooling medium of the heat exchanger power source I is connected with the inlet of the check valve II through a pipeline;
the heat dissipation requirement of the power source I is greater than that of the power source II; correspondingly, the cooling medium channel I and the cooling medium channel II are respectively connected with the same inlet and the same outlet of a cooling medium cavity channel of the cooling device in a parallel connection mode; the method comprises the following steps:
the inlet of the medium conveying pump I and the inlet of the medium conveying pump III are connected with the outlet of the cooling device in a parallel mode through pipelines; and the outlet of the check valve I and the outlet of the check valve II are connected with the inlet of the cooling device in parallel through pipelines.
6. The hybrid cooling system of two power locomotives according to claim 5, wherein said power source I is a diesel engine and said power source II is a transformer.
7. A method of controlling a hybrid cooling system for a hybrid locomotive according to claim 3, wherein the method comprises:
when the power source I works, the medium delivery pump I and the cooling device are put into operation, at the moment, the power source II does not work, and the medium delivery pump II does not put into operation; the circulation of the cooling medium for the operation of the power source I is performed by the following paths: power source I → check valve I → cooling device I → medium transfer pump I → power source I;
when the power source II works, the medium delivery pump II and the cooling device are put into operation; at the moment, the power source I does not work, and the medium delivery pump I does not work; the circulation of the cooling medium for the operation of the power source II is performed according to the following paths: power source II → check valve II → cooling device I → medium transfer pump II → power source II.
8. The method for controlling the hybrid cooling system of two power locomotives according to claim 5, wherein the method comprises:
when the power source I works, the medium delivery pump I and the cooling device are put into operation, at the moment, the power source II does not work, and the medium delivery pump II and the medium delivery pump III are not put into operation; the circulation of the cooling medium for the operation of the power source I is performed by the following paths: power source I → check valve I → cooling device I → medium transfer pump I → power source I;
when the power source II works, the medium delivery pump II, the medium delivery pump III and the cooling device are put into operation, at the moment, the power source I does not work, and the medium delivery pump I does not put into operation; the circulation of the cooling medium for the operation of the power source II is performed according to the following paths: medium circulation path used by power source II: power source II → heat exchanger → medium transfer pump II → power source II; medium circulation path used by power source I: heat exchanger → check valve II → cooling device → medium transfer pump III → heat exchanger.
CN202111342959.XA 2021-11-12 2021-11-12 Double-power-source locomotive fusion cooling system and control method Pending CN113978488A (en)

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CN113147366A (en) * 2021-04-25 2021-07-23 中南大学 Cooling system of plateau type hybrid vehicle

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