CN110912378B - Nested formula heat pipe radiator of diesel locomotive based on electrical isolation suspension frame - Google Patents
Nested formula heat pipe radiator of diesel locomotive based on electrical isolation suspension frame Download PDFInfo
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- CN110912378B CN110912378B CN201911216773.2A CN201911216773A CN110912378B CN 110912378 B CN110912378 B CN 110912378B CN 201911216773 A CN201911216773 A CN 201911216773A CN 110912378 B CN110912378 B CN 110912378B
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- heat pipe
- pipe radiator
- suspension frame
- power module
- electrical isolation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
- H05K7/20918—Forced ventilation, e.g. on heat dissipaters coupled to components the components being isolated from air flow, e.g. hollow heat sinks, wind tunnels or funnels
Abstract
The invention belongs to the technical field of heat dissipation and electrical isolation of a variable flow system of a diesel locomotive, and relates to a nested heat pipe radiator of the diesel locomotive based on an electrical isolation suspension frame, which comprises a first heat pipe radiator and a second heat pipe radiator, wherein the second heat pipe radiator is arranged on the first heat pipe radiator through the electrical isolation suspension frame; the three-phase rectification power module is fixed on the mounting surface of the substrate of the first heat pipe radiator, the bidirectional DC/DC conversion power module is fixed on the mounting surface of the substrate of the second heat pipe radiator, the rectification power module and the bidirectional DC/DC conversion power module are integrated in the power unit main body by the electrical isolation suspension frame, the rectification power module and the bidirectional DC/DC conversion power module are mutually independent and are electrically connected through the composite busbar, and the whole power unit main body is compact in structure and flexible in disassembly and assembly, and the problem that the whole power unit occupies space when power modules with different voltage levels are independently distributed is solved.
Description
Technical Field
The invention belongs to the technical field of heat dissipation and electrical isolation of a variable flow system of a diesel locomotive, and relates to a nested heat pipe radiator of the diesel locomotive based on an electrical isolation suspension frame.
Background
A converter system of a frame-controlled ac transmission diesel locomotive generally includes two sets of rectifiers and two sets of traction inverters, one set of rectifier and one set of traction inverter complete the work of one frame, and the other set of rectifier and the other set of traction inverter complete the work of the other frame. A converter system consisting of the rectifier and the traction inverter is arranged on the plane of the locomotive underframe in a vertical cabinet type structure or is hung on the top of the locomotive or other positions in a flat type structure.
In a converter cabinet of an internal combustion locomotive, the function of a power unit is single, or only a rectification function, an inversion function or a DC/DC chopping conversion function can be completed by externally electrically connecting two or three power units, so that the power unit and the electrical connection occupy a large part of the volume of the converter cabinet body, the path of the electrical connection is long, the direction is undefined, and the generated electromagnetic environment is complex, so that other low-voltage electric appliances in the converter cabinet body are interfered, and the working reliability of the converter is even influenced. In addition, a plurality of independent power units with different functions are sequentially arranged on the air duct and are arranged in front of the air duct, the temperature of outlet air of the power units is the temperature of inlet air of the power units behind, the more power units are cooled, the more uneven the heat dissipation effect of each power unit is, the more the cooling air carries away the heat of the power units in front of the air duct, the temperature of the inlet air of the power units behind is increased, and the heat dissipation effect is influenced. Finally, the arrangement of a control system, a cooling system and a traction motor in addition to a converter system among the electric appliances of the diesel locomotive makes the space above the plane of the locomotive underframe, which is very limited, very tight.
The diesel locomotive converter system is generally composed of a traction inversion power module and a rectification power module, and along with the rapid development of the rail transit technology, the energy-saving and environment-friendly gasoline-electric hybrid diesel locomotive becomes a new trend of the diesel locomotive, namely, a bidirectional DC/DC chopping function for charging and discharging a storage battery is added to the original function. The energy-saving and environment-friendly type conversion system of the petrol-electric hybrid diesel locomotive consists of a traction inversion power module, a rectification power module and a bidirectional DC/DC chopping power module. Due to the addition of the bidirectional DC/DC chopping power module in the hybrid power internal combustion locomotive, the electric appliances are more crowded.
In addition, when the power modules with different functions are independently arranged, because voltage difference exists between the power modules, in order to provide enough distance to ensure electric clearance, a larger installation space is required; or, power modules with different functions are integrated together, voltage differences are caused by different voltage levels, and in order to prevent breakdown short-circuit faults caused by the voltage differences, an insulation device needs to be added for electrical isolation, while a common electrical isolation device only has an insulation isolation function and does not have mechanical support capability for other heavy components.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a nested heat pipe radiator of an internal combustion locomotive based on an electrical isolation suspension frame, which integrates a newly added bidirectional DC/DC chopping power module of an energy-saving and environment-friendly gasoline-electric hybrid internal combustion locomotive on a rectification power module so as to solve the problems of insufficient installation space and uneven heat dissipation.
In order to achieve the purpose, the invention provides the following technical scheme:
a nested heat pipe radiator of a diesel locomotive based on an electrical isolation suspension frame comprises a first heat pipe radiator and a second heat pipe radiator, wherein the second heat pipe radiator is arranged on the first heat pipe radiator through the electrical isolation suspension frame, and an installation surface on a substrate of the first heat pipe radiator and an installation surface on a substrate of the second heat pipe radiator are positioned on the same plane; the three-phase rectification power module is fixed on the mounting surface of the substrate of the first heat pipe radiator, the bidirectional DC/DC conversion power module is fixed on the mounting surface of the substrate of the second heat pipe radiator, the three-phase rectification power module and the bidirectional DC/DC conversion power module are integrated in the power unit main body by the electrical isolation suspension frame, and the three-phase rectification power module and the bidirectional DC/DC conversion power module are mutually independent and are electrically connected through the composite busbar.
Furthermore, the three-phase rectification power module is formed by 3 double-tube parallel diodes of 4500V/1200A and is used for rectifying three-phase alternating current generated by a main generator of the locomotive into direct current for an intermediate direct current link and loads of each stage of the locomotive.
Furthermore, the bidirectional DC/DC conversion power module is composed of 2 IGBTs (insulated gate bipolar transistors) of 1700V/800A and is used as a voltage reduction power supply or a voltage boosting power supply. When the bidirectional DC/DC conversion power module is used as a voltage reduction power supply, the direct current bus voltage of the diesel locomotive is converted into adjustable charging voltage for charging the power battery pack. When the bidirectional DC/DC conversion power module is used as a boosting power supply, the bidirectional DC/DC conversion power module is used for the discharging process of a power battery pack of the internal combustion locomotive, and the electric energy stored by the power battery is transmitted to a direct current bus of the internal combustion locomotive for locomotive traction.
Further, a first rectangular opening for mounting a second heat pipe radiator is arranged at the center of the electrically isolated suspension frame.
Furthermore, the lower mounting surface of the electrical isolation suspension frame is provided with an electrical isolation enclosure around the first rectangular opening, so that the requirements of electrical gaps and creepage distances of different voltages between the three-phase rectification power module and the bidirectional DC/DC conversion power module are met while the rectification and chopping functions are realized, and breakdown short-circuit faults caused by voltage differences among the integrated power modules of different voltage levels are avoided.
Further, the base plate of the first heat pipe radiator is provided with an extending part upwards, and the extending part is provided with a second rectangular opening for installing an electrical isolation suspension frame; the electrical isolation suspension frame is nested in the second rectangular opening, and the lower mounting surface of the electrical isolation suspension frame is fitted with the upper mounting surface of the substrate of the first heat pipe radiator; the second heat pipe radiator is mounted at the first rectangular opening of the electrical isolation suspension frame in a suspension mode, the upper mounting surface of the substrate of the second heat pipe radiator is attached to the lower mounting surface of the electrical isolation suspension frame, and the upper mounting surface of the substrate of the second heat pipe radiator and the upper mounting surface of the substrate of the first heat pipe radiator are located on the same plane.
Furthermore, an L-shaped notch is formed in one side edge of the electrical isolation suspension frame, the L-shaped notch comprises a first mounting surface used for being connected with a mounting surface on the first heat pipe radiator, and the electrical isolation suspension frame is fixedly connected with the first heat pipe radiator through a first mounting surface matched with a fastener;
the second heat pipe radiator is mounted on a second mounting surface of the electrical isolation suspension frame in a suspension manner, and the mounting surface on the substrate of the second heat pipe radiator and the mounting surface on the substrate of the first heat pipe radiator are ensured to be positioned on the same plane;
the L-shaped notch further comprises a third mounting surface perpendicular to the first mounting surface, and a gap is reserved between the third mounting surface and the side edge of the first heat pipe radiator, so that mechanical mounting is facilitated.
Furthermore, the first heat pipe radiator, the electrically isolated suspension frame and the second heat pipe radiator form a nested heat pipe radiator whole, and the upper mounting surface of the substrate of the heat pipe radiator whole is fixedly connected with the vehicle body frame through a fastener.
Furthermore, the lower mounting surface of the base plate of the whole heat pipe radiator is connected with a main air duct of the vehicle body, and a sealing gasket and a sealing strip are adhered at the joint, so that the sealing performance and the anti-impact vibration performance of the air duct are ensured.
Furthermore, a first air duct barrier belt is arranged on the outer side of the first heat pipe radiator, and a second air duct barrier belt is arranged on the outer side of the heat pipe of the second heat pipe radiator, so that the wind is shielded, and the functions of fixing and protecting the heat pipe are achieved; the first air duct baffle belt and the second air duct baffle belt jointly act on the heat pipe radiator to form a 'Lu' shaped air duct, the 'Lu' shaped air duct is installed in the main air duct of the power unit to divide the main air duct of the power unit into two independent smaller air ducts, and the main air duct of the power unit is in butt joint with the main air duct of the vehicle body to form an air cooling system.
Furthermore, the electrical isolation suspension frame is prepared by adopting an SMC compression molding process, so that the requirements of the whole heat pipe radiator on the insulation performance, the electrical performance and the mechanical performance of the electrical isolation suspension frame, including tensile, compression, bending and impact resistance, are met.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects: by adding the design of an electrical isolation suspension frame, the three-phase rectification power module and the bidirectional DC/DC conversion power module are integrated in one power unit main body, and are mutually independent and electrically connected through the composite busbar, so that the whole power unit main body is mutually independent from the inside and self-integrated from the outside, the structure is compact, the assembly and disassembly are flexible, and the problem that the whole power unit occupies space due to the independent layout of power modules with different functions is solved; the three-phase rectification power module and the bidirectional DC/DC conversion power module can meet the electrical isolation requirements of different voltages between the three-phase rectification power module and the bidirectional DC/DC conversion power module while realizing the rectification and chopping functions, and solve the problem that breakdown short-circuit faults are easily caused by voltage differences among the power modules with different voltage levels after the power modules with different voltage levels are integrated.
In addition, the power unit main air duct is divided into two independent air ducts which are in an up-and-down parallel structure through the first air duct barrier belt arranged on the outer side of the heat pipe of the first heat pipe radiator and the second air duct barrier belt arranged on the outer side of the heat pipe of the second heat pipe radiator, so that the three-phase rectification power module and the bidirectional DC/DC conversion power module can receive direct blowing of cooling air simultaneously, and the influence of heat dissipation of the front power module on heat dissipation of the rear power module under the condition that the power modules with different functions are installed in the front and the rear directions along the air duct is changed.
Therefore, the electrical isolation suspension frame not only electrically isolates the bidirectional DC/DC chopping power module and the three-phase rectification power module to ensure the voltage difference between the two modules, but also suspends and connects the heat pipe radiator of the bidirectional DC/DC chopping power module to the heat pipe radiator of the three-phase rectification power module, plays a role in supporting and fixing the bidirectional DC/DC conversion power module and the heat pipe radiator, forms a novel nested heat pipe radiator, can be used as a mechanical structure part to meet the strength requirement, can be used as an electrical part to meet the requirements of electrical clearance and creepage distance, and also plays a role in shock resistance.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic installation diagram of a nested heat pipe radiator structure of an internal combustion locomotive provided in embodiment 1 of the present invention;
FIG. 2 is an electrical schematic diagram of a rectification + chopping power module of a nested heat pipe radiator structure of an internal combustion locomotive provided by the invention;
fig. 3 (a) and 3 (b) are three-dimensional structural views of an electrically isolated suspension frame provided in embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a three-phase rectification power module according to embodiment 1 of the present invention;
fig. 5 is a schematic structural diagram of a bidirectional DC/DC conversion power module provided by the present invention;
fig. 6 is a structural diagram of a nested heat pipe radiator of an internal combustion locomotive provided in embodiment 1 of the present invention;
fig. 7 is a schematic structural diagram of a three-phase rectification power module according to embodiment 2 of the present invention;
fig. 8 (a) and 8 (b) are three-dimensional structural views of an electrically isolated suspension frame provided in embodiment 2 of the present invention;
fig. 9 is a structure diagram of a nested heat pipe radiator of an internal combustion locomotive according to embodiment 2 of the present invention;
fig. 10 is a schematic structural diagram of a total rectification + chopping power module provided by the present invention;
FIG. 11 is a schematic flow diagram of a main duct of a vehicle body according to the present invention;
FIG. 12 is a cross-sectional view of a main duct of a power unit provided by the present invention;
fig. 13 is an installation schematic view of a nested heat pipe radiator structure of an internal combustion locomotive provided in embodiment 2 of the present invention.
Wherein: 1. a first heat pipe radiator; 2. a second heat pipe radiator; 3. an electrically isolated suspension frame; 4. a three-phase rectification power module; 5. a bidirectional DC/DC conversion power module; 6. a first rectangular opening; 7. an electrically isolated enclosure; 8. a second rectangular opening; 9. a first mounting surface; 10. a second mounting surface; 11. a first air duct baffle belt; 12. a second air duct baffle belt; 13. a power unit main air duct; 14. a vehicle body main air duct; 15. a third mounting surface; 16. an L-shaped notch.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the appended claims.
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and examples.
Example 1:
referring to fig. 1, the invention provides a nested heat pipe radiator of an internal combustion locomotive based on an electrical isolation suspension frame, which comprises a first heat pipe radiator 1 and a second heat pipe radiator 2, wherein the second heat pipe radiator 2 is arranged on the first heat pipe radiator 1 through an electrical isolation suspension frame 3, and the mounting surface on the substrate of the first heat pipe radiator 1 and the mounting surface on the substrate of the second heat pipe radiator 2 are positioned on the same plane; the three-phase rectification power module 4 is fixed on the upper mounting surface of the substrate of the first heat pipe radiator 1, the bidirectional DC/DC conversion power module 5 is fixed on the upper mounting surface of the substrate of the second heat pipe radiator 2, the three-phase rectification power module 4 and the bidirectional DC/DC conversion power module 5 are integrated in the power unit main body through the electrical isolation suspension frame 3, and the three-phase rectification power module and the bidirectional DC/DC conversion power module are mutually independent and are electrically connected through the composite busbar.
Further, in combination with the electrical schematic diagram of the rectification + chopping power module in the nested heat pipe radiator structure of the internal combustion locomotive shown in fig. 2, the three-phase rectification power module 4 is formed by 3 double-pipe parallel diodes of 4500V/1200A, and is used for rectifying three-phase alternating current generated by a main generator of the locomotive into direct current for a middle direct current link and loads of each stage of the locomotive.
Further, referring to an electrical schematic diagram of a rectification + chopping power module in a nested heat pipe radiator structure of an internal combustion locomotive shown in fig. 2, in combination with fig. 5, a bidirectional DC/DC conversion power module 5 is formed by 2 IGBTs of 1700V/800A, and is used as a step-down power supply or a step-up power supply. When the bidirectional DC/DC conversion power module 5 is used as a voltage reduction power supply, the direct current bus voltage of the diesel locomotive is converted into adjustable charging voltage for charging the power battery pack. When the bidirectional DC/DC conversion power module 5 is used as a boosting power supply, the bidirectional DC/DC conversion power module is used for the discharging process of a power battery pack of the internal combustion locomotive, and the electric energy stored by the power battery is transmitted to a direct current bus of the internal combustion locomotive for locomotive traction.
Further, as shown in fig. 3 (a), a first rectangular opening 6 for mounting the second heatpipe heatsink 2 is provided at the center of the electrically isolated suspension frame 3; a baffle is provided on one side of the upper mounting surface of the electrically isolated suspension frame 3 for electrical isolation and increasing creepage distance.
Further, as shown in fig. 3 (b), the lower mounting surface of the electrical isolation suspension frame 3 is provided with an electrical isolation enclosure 7 located around the first rectangular opening 6, so that the rectification and chopping functions are realized, and meanwhile, the requirements of electrical gaps and creepage distances between the three-phase rectification power module 4 and the bidirectional DC/DC conversion power module 5 at different voltages are met, and breakdown short-circuit faults caused by voltage differences between the power modules at different voltage levels after integration are avoided.
Further, referring to fig. 4, the base plate of the first heatpipe heatsink 1 is provided with an upward extension, and a second rectangular opening 8 for mounting the electrically isolated suspension frame 3 is milled out of the extension; the electrical isolation suspension frame 3 is nested in the second rectangular opening 8, and the lower mounting surface of the electrical isolation suspension frame 3 is fitted with the upper mounting surface of the substrate of the first heat pipe radiator 1; the second heat pipe radiator 2 is mounted at the first rectangular opening 6 of the electrical isolation suspension frame 3 in a suspension manner, and the substrate upper mounting surface of the second heat pipe radiator 2 is attached to the lower mounting surface of the electrical isolation suspension frame 3, so that the substrate upper mounting surface (namely the mounting surface of the IGBT) of the second heat pipe radiator 2 and the substrate upper mounting surface (namely the mounting surface of the diode) of the first heat pipe radiator 1 are located on the same plane.
Further, referring to fig. 6, the first heat pipe radiator 1, the electrically isolated suspension frame 3, and the second heat pipe radiator 2 form a nested heat pipe radiator unit, and the upper mounting surface of the base plate of the heat pipe radiator unit is fixedly connected to the vehicle body frame by a fastener.
Further, as shown in fig. 1, the lower mounting surface of the substrate of the heat pipe radiator is connected to the main air duct 13 of the power unit, and a sealing gasket and a sealing strip are adhered to the joint, thereby ensuring the sealing performance and the shock and vibration resistance of the air duct.
Further, as shown in fig. 1, the three-phase rectification power module 4 and the bidirectional DC/DC chopping power module 5 of the rectification + chopping power module are designed in the vertical position, and cooling air can blow the two modules in parallel at the air inlet; referring to fig. 11-12, a first air duct barrier belt 11 is disposed on an outer side of a heat pipe of the first heat pipe radiator 1, a second air duct barrier belt 12 is disposed on an outer side of a heat pipe of the second heat pipe radiator 2, and the first air duct barrier belt 11 and the second air duct barrier belt 12 jointly act on the heat pipe radiators to form an air duct shaped like a Chinese character 'lu', which is installed in a main air duct 13 of a power unit to divide the main air duct 13 of the power unit into two independent smaller air ducts, so as to prevent heat generated by the three-phase rectification power module 4 and the bidirectional DC/DC chopping power module 5 from influencing each other. Meanwhile, a power unit main air duct 13 of the rectification and chopping power module is assembled with a left structure and a right structure of a power unit main body, and the power unit main air duct 13 is used as a part of a main air duct of an internal combustion engine vehicle body and is in butt joint with the main air duct of the vehicle body to form an integral air cooling system. In the prior art, the heat dissipation fins or heat pipes of the power module radiator partially extend into the main air duct 14 of the vehicle body for heat dissipation, and the power module does not have an air duct. The power module with the air channel provided by the invention has the advantages that the power module and the main air channel of the vehicle body are more stably assembled and more flexibly disassembled.
Preferably, the first air duct baffle belt 11 and the second air duct baffle belt 12 are thin plates of 1.5mm, the first air duct baffle belt 11 is welded to the outer side of the heat pipe of the first heat pipe radiator 1, and the second air duct baffle belt 12 is welded to the outer side of the heat pipe of the second heat pipe radiator 2. The whole heat pipe radiator (including the L-shaped air channel) extends into the power unit main air channel 13 together, and the power unit main air channel 13 is formed by welding thick steel plates and has a bearing effect. The L-shaped air duct is similar to an inner container of a vacuum cup and belongs to the whole radiator, the main air duct 13 of the power unit is similar to the outer wall of the vacuum cup, supports the whole power unit and is in butt joint with the main air duct 14 of the vehicle body to form a whole air cooling system.
Preferably, the electrically isolated suspension frame 3 is prepared by adopting an SMC compression molding process, so as to meet the requirements of the whole heat pipe radiator on the insulating property, the electrical property and the mechanical property of the electrically isolated suspension frame 3, including tensile property, compression resistance, bending resistance, impact resistance and the like.
In summary, according to the nested heat pipe radiator structure for the internal combustion locomotive, provided by the invention, the three-phase rectification power module 4 and the bidirectional DC/DC chopping power module 5 are integrated in one power unit by virtue of the electrical isolation suspension frame 3 made of an insulating material, so that the power unit main body has the functions of rectification and chopping, and the bidirectional DC/DC chopping power module 5 is in an isolation suspension state in the rectification and chopping power module and is not in contact with an external frame and metal parts. The electrical isolation suspension frame 3 is used for electrically isolating the bidirectional DC/DC chopping power module 5 and the three-phase rectification power module 4 to ensure the voltage difference between the two modules, and also is used for suspending and connecting the second heat pipe radiator 2 of the bidirectional DC/DC chopping power module 5 to the first heat pipe radiator 1 of the three-phase rectification power module 4, so that the functions of supporting and fixing the bidirectional DC/DC conversion power module 5 and the heat pipe radiator are achieved, a novel nested heat pipe radiator is formed, the electrical isolation suspension frame can be used as a mechanical structure part to meet the strength requirement, can be used as an electrical part to meet the requirements of electrical clearance and creepage distance, and also has the shockproof effect.
In addition, the three-phase rectification power module 4 and the bidirectional DC/DC chopping power module 5 apply different intermediate voltages, in order to prevent breakdown short-circuit faults caused by voltage differences, a special electrical isolation suspension frame 3 is specially designed to perform electrical isolation, so that the three-phase rectification power module 4 and the bidirectional DC/DC chopping power module 5 become two mutually independent units, the two units are electrically connected through a composite busbar, and other parts such as a driving board, a capacitor, a resistor and a frame are assembled, the frame is assembled with the upper mounting surface of the first heat pipe radiator 1 and the upper mounting surface of the insulating device at the same time, and a rectification + chopping power module general diagram is completed after assembly, which is shown in fig. 10. The two mutually isolated units are fastened and connected through an insulating device with certain strength, and the mounting surfaces of the base plates of the first heat pipe radiator 1 and the second heat pipe radiator 2 corresponding to the two module units are ensured to be on the same plane. The power modules of the heat pipe radiator are mutually independent inside and self-integrated outside, and the heat pipe radiator is compact in structure and flexible to assemble and disassemble.
Example 2:
referring to fig. 13, the invention provides a nested heat pipe radiator structure for a diesel locomotive, which includes a first heat pipe radiator 1 and a second heat pipe radiator 2, wherein the second heat pipe radiator 2 is mounted on the first heat pipe radiator 1 through an electrically isolated suspension frame 3, and a mounting surface on a substrate of the first heat pipe radiator 1 and a mounting surface on a substrate of the second heat pipe radiator 2 are located on the same plane; the three-phase rectification power module 4 is fixed on the upper mounting surface of the substrate of the first heat pipe radiator 1, the bidirectional DC/DC conversion power module 5 is fixed on the upper mounting surface of the substrate of the second heat pipe radiator 2, the three-phase rectification power module 4 and the bidirectional DC/DC conversion power module 5 are integrated in the power unit main body through the electrical isolation suspension frame 3, and the three-phase rectification power module and the bidirectional DC/DC conversion power module are mutually independent and are electrically connected through the composite busbar.
Further, in combination with the electrical schematic diagram of the rectification + chopping power module in the nested heat pipe radiator structure of the internal combustion locomotive shown in fig. 2, the three-phase rectification power module 4 is formed by 3 double-pipe parallel diodes of 4500V/1200A, and is used for rectifying three-phase alternating current generated by a main generator of the locomotive into direct current for use in an intermediate direct current link and loads of each stage of the locomotive, and the structural diagram thereof is shown in fig. 7.
Further, referring to an electrical schematic diagram of a rectification + chopping power module in a nested heat pipe radiator structure of an internal combustion locomotive shown in fig. 2, in combination with fig. 5, a bidirectional DC/DC conversion power module 5 is formed by 2 IGBTs of 1700V/800A, and is used as a step-down power supply or a step-up power supply. When the bidirectional DC/DC conversion power module 5 is used as a voltage reduction power supply, the direct current bus voltage of the diesel locomotive is converted into adjustable charging voltage for charging the power battery pack. When the bidirectional DC/DC conversion power module 5 is used as a boosting power supply, the bidirectional DC/DC conversion power module is used for the discharging process of a power battery pack of the internal combustion locomotive, and the electric energy stored by the power battery is transmitted to a direct current bus of the internal combustion locomotive for locomotive traction.
Further, as shown in fig. 8 (a), a first rectangular opening 6 for mounting the second heatpipe heatsink 2 is provided at the center of the electrically isolated suspension frame 3; a baffle is provided on one side of the upper mounting surface of the electrically isolated suspension frame 3 for electrical isolation and increasing creepage distance.
Further, as shown in fig. 8 (b), an electrical isolation enclosure 7 is disposed on the lower mounting surface of the electrical isolation suspension frame 3 and around the first rectangular opening 6, so that the rectification and chopping functions are realized, electrical isolation requirements of different voltages between the three-phase rectification power module 4 and the bidirectional DC/DC conversion power module 5 are met, and breakdown short-circuit faults caused by voltage differences existing between the power modules of different voltage classes after integration are avoided.
Further, referring to fig. 8 (a) and 8 (b), an L-shaped notch 16 is formed in one side of the electrically isolated suspension frame 3, the L-shaped notch 16 includes a first mounting surface 9 for connecting with the upper mounting surface of the first heat pipe radiator 1, and the electrically isolated suspension frame 3 is fixedly connected with the first heat pipe radiator 1 through the first mounting surface 9 in a manner of being matched with a fastener;
the second heat pipe radiator 2 is mounted on the second mounting surface 10 of the electrical isolation suspension frame 3 in a suspension manner, and the mounting surface on the substrate (namely, the mounting surface of the IGBT) of the second heat pipe radiator 2 and the mounting surface on the substrate (namely, the mounting surface of the diode) of the first heat pipe radiator 1 are ensured to be positioned on the same plane;
the L-shaped notch 16 further includes a third mounting surface 15 perpendicular to the first mounting surface 9, and a gap is left between the third mounting surface 15 and the side edge of the first heatpipe radiator 1, so as to facilitate mechanical mounting.
Further, referring to fig. 9, the first heat pipe radiator 1, the electrically isolated suspension frame 3, and the second heat pipe radiator 2 form a nested heat pipe radiator assembly, and the upper mounting surface of the base plate of the heat pipe radiator assembly is fixedly connected to the vehicle body frame through a fastener.
Further, as shown in fig. 9, the lower mounting surface of the substrate of the heat pipe radiator is connected to the main air duct 13 of the power unit, and a sealing gasket and a sealing strip are adhered to the joint, so that the sealing performance and the shock and vibration preventing performance of the air duct are ensured.
Further, as shown in fig. 11-13, the three-phase rectification power module 4 and the bidirectional DC/DC chopping power module 5 of the rectification + chopping power module are designed in an up-down position, cooling air can blow the two modules directly at the air inlet in parallel, a first air duct barrier strip 11 is arranged on the outer side of a heat pipe of the first heat pipe radiator 1, a second air duct barrier strip 12 is arranged on the outer side of a heat pipe of the second heat pipe radiator 2, and the first air duct barrier strip 11 and the second air duct barrier strip 12 act on the heat pipe radiator together to form a "lu" shaped air duct, which separates the main air duct 13 of the power unit into two independent smaller air ducts, so as to prevent the heat generated by the three-phase rectification power module 4 and the bidirectional DC/DC chopping power module 5 from affecting each other. Meanwhile, a power unit main air duct 13 of the rectification and chopping power module is assembled with a left structure and a right structure of a power unit main body, and the power unit main air duct 13 is used as a part of a main air duct of an internal combustion engine body and is in butt joint with a main air duct 14 of the internal combustion engine body to form an integral air cooling system. In the prior art, a radiating fin or a heat pipe part of a power module radiator extends into a main air duct of a vehicle body to radiate heat, and the power module does not have the air duct. The power module with the air channel provided by the invention ensures that the power module and the main air channel 14 of the vehicle body are assembled more stably and assembled and disassembled more flexibly.
Preferably, the first air duct baffle belt 11 and the second air duct baffle belt 12 are thin plates of 1.5mm, the first air duct baffle belt 11 is welded to the outer side of the heat pipe of the first heat pipe radiator 1, and the second air duct baffle belt 12 is welded to the outer side of the heat pipe of the second heat pipe radiator 2. The whole heat pipe radiator (including the L-shaped air flue) extends into the power unit main air flue 13 together, and the power unit main air flue 13 is formed by welding thick steel plates and has a load-bearing function. The L-shaped air duct is similar to an inner container of a vacuum cup and belongs to the whole radiator, and the power unit main air duct 13 is similar to the outer wall of the vacuum cup, supports the whole power unit and is in butt joint with the vehicle body main air duct 14 to form a whole air cooling system.
Preferably, the electrically isolated suspension frame 3 is prepared by adopting an SMC compression molding process, so as to meet the requirements of the whole heat pipe radiator on the insulating property, the electrical property and the mechanical property of the electrically isolated suspension frame 3, including tensile property, compression resistance, bending resistance, impact resistance and the like.
In conclusion, according to the nested heat pipe radiator structure of the internal combustion locomotive, the three-phase rectification power module 4 and the bidirectional DC/DC chopping power module 5 are integrated in one power unit by virtue of the electrical isolation suspension frame 3 made of the insulating material, so that the power unit main body has the functions of rectification and chopping, and the bidirectional DC/DC chopping power module 5 is in an isolation suspension state in the rectification and chopping power module and is not in contact with an external frame and metal parts. This kind of electrical isolation suspension frame 3, except carrying out the electrical isolation to two-way DC/DC chopping power module 5 and three-phase rectification power module 4 in order to guarantee the voltage difference between two modules, still hang second heat pipe radiator 2 with two-way DC/DC chopping power module 5 on being connected to three-phase rectification power module 4's first heat pipe radiator 1, play and support, the effect of fixed two-way DC \ DC conversion power module 5 and heat pipe radiator, form a novel nested formula heat pipe radiator, both can satisfy the strength requirement as a mechanical structure part, can satisfy electric clearance and creepage distance requirement as an electrical component again, still play the shockproof effect simultaneously.
In addition, the three-phase rectification power module 4 and the bidirectional DC/DC chopping power module 5 apply different intermediate voltages, in order to prevent breakdown short-circuit faults caused by voltage differences, a special electrical isolation suspension frame 3 is specially designed to perform electrical isolation, so that the three-phase rectification power module 4 and the bidirectional DC/DC chopping power module 5 become two mutually independent units, the two units are electrically connected through a composite busbar, and other parts such as a driving board, a capacitor, a resistor and a frame are assembled, the frame is assembled with an upper mounting surface of a first heat pipe radiator and an upper mounting surface of an insulating device at the same time, and a rectification + chopping power module general diagram is assembled, which is shown in fig. 10. The two mutually isolated units are fastened and connected through an insulating device with certain strength, and the mounting surfaces of the base plates of the first heat pipe radiator 1 and the second heat pipe radiator 2 corresponding to the two module units are ensured to be on the same plane. The power modules of the heat pipe radiator are mutually independent inside and self-integrated outside, and the heat pipe radiator is compact in structure and flexible to assemble and disassemble.
The above description is merely illustrative of particular embodiments of the invention that enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It will be understood that the invention is not limited to what has been described above and that various modifications and changes can be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. The diesel locomotive nested heat pipe radiator based on the electrical isolation suspension frame is characterized by comprising a first heat pipe radiator (1) and a second heat pipe radiator (2), wherein the second heat pipe radiator (2) is installed on the first heat pipe radiator (1) through the electrical isolation suspension frame (3), and the installation surface of the substrate of the first heat pipe radiator (1) and the installation surface of the substrate of the second heat pipe radiator (2) are located on the same plane; a three-phase rectification power module (4) is fixed on the mounting surface of the substrate of the first heat pipe radiator (1), a bidirectional DC/DC conversion power module (5) is fixed on the mounting surface of the substrate of the second heat pipe radiator (2), the three-phase rectification power module (4) and the bidirectional DC/DC conversion power module (5) are integrated in the power unit main body by the electrical isolation suspension frame (3), and the three-phase rectification power module and the bidirectional DC/DC conversion power module are mutually independent and are electrically connected through a composite busbar;
a first rectangular opening (6) for mounting the second heat pipe radiator (2) is formed in the center of the electrical isolation suspension frame (3); the base plate of the first heat pipe radiator (1) is upwards provided with an extending part, and the extending part is provided with a second rectangular opening (8) for mounting an electric isolation suspension frame (3); the electrical isolation suspension frame (3) is nested in the second rectangular opening (8), and the lower mounting surface of the electrical isolation suspension frame (3) is attached to the upper mounting surface of the substrate of the first heat pipe radiator (1); the second heat pipe radiator (2) is arranged at the first rectangular opening (6) of the electrical isolation suspension frame (3) in a suspension mode, the upper base plate installation surface of the second heat pipe radiator (2) is attached to the lower installation surface of the electrical isolation suspension frame (3) in an assembling mode, and the upper base plate installation surface of the second heat pipe radiator (2) and the upper base plate installation surface of the first heat pipe radiator (1) are located on the same plane.
2. An internal combustion locomotive nested heat pipe radiator based on an electrical isolation suspension frame as claimed in claim 1, characterized in that the three-phase rectification power module (4) is formed by 3 double-pipe parallel diodes of 4500V/1200A for rectifying three-phase alternating current generated by a locomotive main generator into direct current for use in a middle direct current link and loads of each stage of the locomotive.
3. An electrically isolated suspension frame based nested heat pipe radiator for a diesel locomotive according to claim 1, wherein said bidirectional DC/DC conversion power module (5) is comprised of 2 IGBTs of 1700V/800A for use as a buck or boost power supply.
4. An electrically isolated suspension frame based nested heat pipe radiator for a diesel locomotive according to claim 1, wherein the lower mounting surface of the electrically isolated suspension frame (3) is provided with an electrically isolated enclosure (7) around the first rectangular opening (6).
5. The nested heat pipe radiator for the diesel locomotive based on the electric isolation suspension frame is characterized in that an L-shaped notch (16) is formed in one side edge of the electric isolation suspension frame (3), the L-shaped notch (16) comprises a first mounting surface (9) used for being connected with a mounting surface on the first heat pipe radiator (1), and the electric isolation suspension frame (3) is fixedly connected with the first heat pipe radiator (1) through a first mounting surface (9) matched fastener;
the second heat pipe radiator (2) is mounted on a second mounting surface (10) of the electrical isolation suspension frame (3) in a suspension mode, and the mounting surface on the substrate of the second heat pipe radiator (2) and the mounting surface on the substrate of the first heat pipe radiator (1) are located on the same plane;
the L-shaped notch further comprises a third mounting surface (15) which is perpendicular to the first mounting surface (9), and a gap is reserved between the third mounting surface (15) and the side edge of the first heat pipe radiator (1) so as to facilitate mechanical mounting.
6. The diesel locomotive nested heat pipe radiator based on the electrical isolation suspension frame is characterized in that the first heat pipe radiator (1), the electrical isolation suspension frame (3) and the second heat pipe radiator (2) form a nested heat pipe radiator whole, and the upper installation surface of the base plate of the nested heat pipe radiator whole is fixedly connected with a vehicle body frame through a fastener.
7. The nested heat pipe radiator for the diesel locomotive based on the electrical isolation suspension frame is characterized in that the lower base plate installation surface of the whole heat pipe radiator is connected with an air duct of a locomotive body, and a sealing gasket and a sealing strip are adhered to the connection position.
8. The nested heat pipe radiator for the diesel locomotive based on the electrical isolation suspension frame is characterized in that a first air duct barrier belt (11) is arranged on the outer side of the first heat pipe radiator (1), a second air duct barrier belt (12) is arranged on the outer side of a heat pipe of the second heat pipe radiator (2), and the first air duct barrier belt (11) and the second air duct barrier belt (12) jointly act on the heat pipe radiator to form a 'Lu' shaped ventilation duct; the L-shaped ventilation channel is arranged in the main power unit air channel (13), the main power unit air channel (13) is divided into two independent ventilation channels, and the main power unit air channel (13) is in butt joint with the main vehicle body air channel (14) to form an air cooling system.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1283589A2 (en) * | 2001-08-09 | 2003-02-12 | Bombardier Transportation GmbH | Power converter module |
| WO2008071190A1 (en) * | 2006-12-11 | 2008-06-19 | Danfoss Drives A/S | Electronic device and frequency converter of motor |
| CN102891522A (en) * | 2012-09-28 | 2013-01-23 | 郑州宇通客车股份有限公司 | Dual-energy-storage device with vehicle-mounted charging function |
| CN203056839U (en) * | 2013-02-21 | 2013-07-10 | 深圳市步科电气有限公司 | Heat radiation structure of four-quadrant frequency converter |
| CN204231176U (en) * | 2014-11-11 | 2015-03-25 | 广州智光电机有限公司 | A kind of integral structure compact high-voltage variable frequency device |
| CN204859007U (en) * | 2015-08-28 | 2015-12-09 | 永济新时速电机电器有限责任公司 | Novel pull contravariant power unit |
| CN204906180U (en) * | 2015-09-12 | 2015-12-23 | 永济新时速电机电器有限责任公司 | Novel braking copped wave power unit |
| CN205389176U (en) * | 2015-12-29 | 2016-07-20 | 新风光电子科技股份有限公司 | Realize inverter unit of insulating installation of IGBT |
| CN107800306A (en) * | 2017-11-23 | 2018-03-13 | 北京金自天正智能控制股份有限公司 | A kind of high-power AC and DC drive rectifier cabinet based on heat pipe heat radiation technology |
| CN109245556A (en) * | 2018-08-31 | 2019-01-18 | 西安中车永电电气有限公司 | A kind of diesel locomotive high-power loop circuit heat pipe power module and its mirror-image structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2566347Y (en) * | 2002-08-06 | 2003-08-13 | 联想(北京)有限公司 | Fixed device for heat pipe radiator |
| US7764504B2 (en) * | 2007-05-16 | 2010-07-27 | Tyco Electronics Corporation | Heat transfer system for a receptacle assembly |
| CN207249594U (en) * | 2017-08-29 | 2018-04-17 | 四川省蓝扬科技有限公司 | A kind of automatically cleaning radiator of computer |
| WO2019139305A1 (en) * | 2018-01-10 | 2019-07-18 | 엘지이노텍 주식회사 | Converter |
| CN109119407A (en) * | 2018-09-19 | 2019-01-01 | 常州博瑞电力自动化设备有限公司 | A kind of big component silicon stack structure of thyristor valves |
-
2019
- 2019-12-03 CN CN201911216773.2A patent/CN110912378B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1283589A2 (en) * | 2001-08-09 | 2003-02-12 | Bombardier Transportation GmbH | Power converter module |
| WO2008071190A1 (en) * | 2006-12-11 | 2008-06-19 | Danfoss Drives A/S | Electronic device and frequency converter of motor |
| CN102891522A (en) * | 2012-09-28 | 2013-01-23 | 郑州宇通客车股份有限公司 | Dual-energy-storage device with vehicle-mounted charging function |
| CN203056839U (en) * | 2013-02-21 | 2013-07-10 | 深圳市步科电气有限公司 | Heat radiation structure of four-quadrant frequency converter |
| CN204231176U (en) * | 2014-11-11 | 2015-03-25 | 广州智光电机有限公司 | A kind of integral structure compact high-voltage variable frequency device |
| CN204859007U (en) * | 2015-08-28 | 2015-12-09 | 永济新时速电机电器有限责任公司 | Novel pull contravariant power unit |
| CN204906180U (en) * | 2015-09-12 | 2015-12-23 | 永济新时速电机电器有限责任公司 | Novel braking copped wave power unit |
| CN205389176U (en) * | 2015-12-29 | 2016-07-20 | 新风光电子科技股份有限公司 | Realize inverter unit of insulating installation of IGBT |
| CN107800306A (en) * | 2017-11-23 | 2018-03-13 | 北京金自天正智能控制股份有限公司 | A kind of high-power AC and DC drive rectifier cabinet based on heat pipe heat radiation technology |
| CN109245556A (en) * | 2018-08-31 | 2019-01-18 | 西安中车永电电气有限公司 | A kind of diesel locomotive high-power loop circuit heat pipe power module and its mirror-image structure |
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|---|---|
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