Strong heat dissipation traction converter based on water cooling design

Abstract

The utility model discloses a strong heat dissipation traction converter based on water cooling design, which comprises a box body, a traction power module, a controller, a contactor, an electric reactor and a water cooling heat dissipation unit, the material of the framework of the box body is stainless steel, and the material of the skin of the box body is aluminum alloy. According to the utility model, the box body is made of stainless steel and aluminum alloy, so that the weight of the box body is light, the structural strength of the box body can be improved so as to better meet the installation and maintenance requirements of components in the box body, and the box body has a better corrosion-resistant effect so as to improve the operation capability of the traction converter under severe working conditions; the water-cooling heat dissipation unit is arranged in the box body, and the heat dissipation performance of the traction converter can be improved by adopting a water-cooling heat dissipation mode, so that the normal use of the traction converter in a high-temperature environment can be better ensured; in addition, the device is compact in structure, convenient to assemble, time-saving and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of traction converters, in particular to a strong heat dissipation traction converter based on a water cooling design. Background Art

[0002] Subway trains and other projects are equipped with traction inverters, which are mainly used to invert DC power into AC output power supply. The traction inverter includes main components such as traction power module, controller, contactor, reactor, etc., and the above components are usually installed inside a box.

[0003] The existing traction inverter has the following technical problems: the entire box is usually made of iron, which results in the structural strength of the box being unable to meet the installation and maintenance requirements of the components inside the box, and the poor corrosion resistance of the box results in the traction inverter being unable to cope with the operating capabilities under harsh working conditions, thereby affecting the service life of the traction inverter; in addition, the heat dissipation of the traction inverter mainly relies on mechanical ventilation devices such as fans and exhaust fans, which have poor heat dissipation, and thus easily affect the normal use of the traction inverter in a high temperature environment. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a strong heat dissipation traction inverter based on a water cooling design, which can solve the above technical problems.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a strong heat dissipation traction inverter based on water cooling design, including a box, a traction power module, a controller, a contactor and an inductor, the traction power module, the controller, the contactor and the inductor are all arranged in the box, the frame of the box is made of stainless steel, and the skin of the box is made of aluminum alloy. The strong heat dissipation traction inverter based on water cooling design also includes a water-cooled heat dissipation unit, which is arranged in the box.

[0008] Preferably, the stainless steel is specifically SUS304 stainless steel.

[0009] Preferably, the aluminum alloy is specifically 5754 aluminum alloy.

[0010] Preferably, the water-cooled heat dissipation unit includes a water tank, a water pump and a heat exchanger. A cooling water pipe is provided in the box. The water outlet of the water tank is connected to the water inlet of the water pump, the water outlet of the water pump is connected to the water inlet of the cooling water pipe, the water outlet of the cooling water pipe is connected to the water inlet of the heat exchanger, and the water outlet of the heat exchanger is connected to the water inlet of the water tank.

[0011] Preferably, the frame and the skin are fixed by riveting.

[0012] Preferably, the box body is provided with an inspection door panel and an inspection cover panel.

[0013] Preferably, the inspection door panel is fixed by a rotating door lock, and the inspection cover plate is fixed by captive bolts.

[0014] Preferably, the strong heat dissipation traction converter based on water cooling design also includes a first fan and a second fan, and the first fan and the second fan are arranged in the box at intervals.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present invention provides a strong heat dissipation traction inverter based on water cooling design, which has the following beneficial effects: (1) The material of the box body is stainless steel + aluminum alloy, which can improve the structural strength of the box body to better meet the installation and maintenance requirements of the components inside the box, and can make the box body have better corrosion resistance, so as to enhance the traction inverter's ability to cope with harsh operating conditions and better ensure the service life of the traction inverter; (2) A water-cooling heat dissipation unit is provided in the box body, and the use of water-cooling heat dissipation method can improve the heat dissipation performance of the present invention, thereby better ensuring the normal use of the traction inverter in a high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a first structural schematic diagram of a strong heat dissipation traction converter based on water cooling design according to the utility model;

[0018] Figure 2 This is a second structural schematic diagram of the strong heat dissipation traction converter based on water cooling design of the utility model;

[0019] Figure 3 This is a third structural schematic diagram of the utility model's high heat dissipation traction converter based on water cooling design.

[0020] The numbers in the figure are: 1 box, 2 traction power module, 3 controller, 4 contactor, 5 reactor, 6 water tank, 7 water pump, 8 heat exchanger, 9 first fan, 10 second fan, 11 voltage input unit, 12 auxiliary power module, 13 input pre-charging unit, 14 current sensor unit, 15 auxiliary output contactor unit, 16 warehouse power supply, 17 charger, 18 three-phase filter inductor, 19VLU resistor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides a strong heat dissipation traction converter based on water cooling design, including a box 1, a traction power module 2, a controller 3, a contactor 4 and a reactor 5, wherein the traction power module 2, the controller 3, the contactor 4 and the reactor 5 are all arranged in the box 1. The frame of the box 1 of the utility model is made of stainless steel, the skin of the box 1 is made of aluminum alloy, the skin of the box 1 is the outer surface of the frame of the box 1, and the frame and the skin can be fixed by riveting.

[0023] Preferably, the stainless steel is specifically SUS304 stainless steel, which has excellent properties such as high strength and corrosion resistance. In addition, the aluminum alloy is specifically 5754 aluminum alloy, and can further be 5754-H22 aluminum alloy: 5754-H22 thick aluminum plate technical standards refer to the technical specifications and standards of 5754 alloy aluminum plate materials in the H22 state. 5754 alloy is a typical aluminum-magnesium alloy with good corrosion resistance, weldability and processing performance, while the H22 state represents the state of the aluminum plate after work hardening, with a certain hardness and strength, and is suitable for occasions with high requirements for plate hardness.

[0024] In addition, the strong heat dissipation traction inverter based on water cooling design of the utility model also includes a water cooling heat dissipation unit, which is arranged in the box body 1. Specifically, the water cooling heat dissipation unit includes a water tank 6, a water pump 7 and a heat exchanger 8. A cooling water pipe is arranged in the box body 1. The water outlet of the water tank 6 is connected to the water inlet of the water pump 7, the water outlet of the water pump 7 is connected to the water inlet of the cooling water pipe, the water outlet of the cooling water pipe is connected to the water inlet of the heat exchanger 8, and the water outlet of the heat exchanger 8 is connected to the water inlet of the water tank 6. The above-mentioned cooling water pipe can be specifically arranged on the inner wall of the box body 1. It can be understood that the water pump 7 draws the cooling circulating water from the water tank 6 and transports it to the cooling water pipe to exchange heat with the box body 1, that is, to achieve water cooling and cooling of the box body 1. The cooling circulating water after heating enters the heat exchanger 8 for cooling, and finally returns to the water tank 6.

[0025] Preferably, the utility model may further include a first fan 9 and a second fan 10, and the first fan 9 and the second fan 10 are arranged in the box body 1 at intervals, and the water cooling + air cooling heat dissipation structure is used to better ensure the efficient operation of the traction inverter.

[0026] The contactor 4 is specifically a contactor for pantograph input. The traction power module 2 may specifically include two, which are arranged at intervals in the box 1. The utility model may also include two voltage input units 11, two auxiliary power modules 12, an input pre-charging unit 13, a current sensor unit 14, an auxiliary output contactor unit 15, two storage power supplies 16, a charger 17, a three-phase filter inductor 18, a VLU resistor 19 and other traction converter components; the traction power module 2, controller 3, contactor 4, reactor 5, voltage input unit 11 and other traction converter components of the utility model are all prior art, and will not be described in detail here.

[0027] In addition, the housing 1 may be provided with an inspection door panel and an inspection cover panel. Preferably, the inspection door panel is fixed with a rotary door lock, and the inspection cover panel is fixed with captive bolts.

[0028] Compared with the prior art, the present invention provides a strong heat dissipation traction inverter based on water cooling design, which has the following beneficial effects: (1) The material of the box body is stainless steel + aluminum alloy, which can improve the structural strength of the box body to better meet the installation and maintenance requirements of the components inside the box, and can make the box body have better corrosion resistance, so as to improve the operation capability of the traction inverter under harsh working conditions and better ensure the service life of the traction inverter; (2) A water-cooled heat dissipation unit is provided in the box body, and the water-cooled heat dissipation method can improve the heat dissipation performance of the present invention, thereby better ensuring the normal use of the traction inverter in a high temperature environment; (3) The present invention has a compact structure, and the heat dissipation of the water-cooled heat dissipation unit is 30kW. In order to meet the heat dissipation requirements, the traction inverter in the past needs to use two sets of fans to meet the air volume requirement of 12000m3 / h, while the present invention only needs one set of fans to meet the air volume requirement of 12000m3 / h, and The heat exchanger is only 800x700x60mm in size. The traction power modules are all highly integrated modules, and the chargers are made of silicon carbide. The above results make the traction inverter structure more compact. (4) The material of the box is stainless steel + aluminum alloy, which greatly reduces the weight of the box, achieving lightweight and meeting the strength requirements of rail transit vehicle equipment and anti-corrosion requirements. (5) It is easy to assemble and saves time. The pneumatic parts of the traction inverter are all modular in design and can be assembled by multiple people at the same time, which shortens the assembly time of the traction inverter and allows the production team to arrange personnel more reasonably. (6) It is easy to maintain. The inspection door panel is fixed with a rotating door lock for easy disassembly. The inspection cover is fixed with captive bolts. The bolts will not fall off during disassembly and the number of fixing bolts is reduced, which greatly reduces the maintenance time of maintenance personnel. In addition, the components are arranged reasonably, and there is no need to disassemble or affect other components when maintaining a component separately.

[0029] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A strong heat dissipation traction converter based on water cooling design, comprising a box, a traction power module, a controller, a contactor and a reactor, wherein the traction power module, the controller, the contactor and the reactor are all arranged in the box, characterized in that: The frame of the box is made of stainless steel, the skin of the box is made of aluminum alloy, and the strong heat dissipation traction inverter based on water cooling design also includes a water cooling unit, which is arranged in the box.

2. The strong heat dissipation traction converter based on water cooling design according to claim 1 is characterized in that: The stainless steel is specifically SUS304 stainless steel.

3. The strong heat dissipation traction converter based on water cooling design according to claim 1 is characterized in that: The aluminum alloy is specifically 5754 aluminum alloy.

4. The strong heat dissipation traction converter based on water cooling design according to claim 1 is characterized in that: The water-cooling heat dissipation unit includes a water tank, a water pump and a heat exchanger. A cooling water pipe is provided in the box body. The water outlet of the water tank is connected to the water inlet of the water pump, the water outlet of the water pump is connected to the water inlet of the cooling water pipe, the water outlet of the cooling water pipe is connected to the water inlet of the heat exchanger, and the water outlet of the heat exchanger is connected to the water inlet of the water tank.

5. The strong heat dissipation traction converter based on water cooling design according to claim 1 is characterized in that: The frame and the skin are fixed by riveting.

6. The strong heat dissipation traction converter based on water cooling design according to claim 1 is characterized in that: The box body is provided with an inspection door panel and an inspection cover panel.

7. The strong heat dissipation traction converter based on water cooling design according to claim 6 is characterized in that: The inspection door plate is fixed by a rotating door lock, and the inspection cover plate is fixed by captive bolts.

8. The strong heat dissipation traction converter based on water cooling design according to claim 1 is characterized in that: It also includes a first fan and a second fan, and the first fan and the second fan are arranged in the box body at intervals.

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