Cooling method and device for secondary resistance-capacitance (RC) network absorber of traction transformer of electric locomotive

A technology of secondary side resistance-capacitance network and traction transformer, which is applied in locomotives, cooling/ventilation/heating transformation, etc., can solve problems such as high operating temperature, overvoltage absorption resistor burnout, etc., and achieve the effect of reducing the ambient working temperature

Active Publication Date: 2013-02-20
株洲通车机车配件有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a new traction transformer secondary resistance-capacity network absorber for the problem that the existing traction transformer secondary side resistance-capacity network absorber cannot adapt to the problem that a large number of harmonics cause serious burnout of the overvoltage absorption resistance The heat dissipation method and its device, the heat dissipation method and device of the traction transformer secondary resistance-capacity network absorber can effectively solve the problem that the existing traction transformer secondary-side resistance-capacity network absorber is too high in operating temperature, resulting in the burning of the overvoltage absorption resistance

Method used

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  • Cooling method and device for secondary resistance-capacitance (RC) network absorber of traction transformer of electric locomotive
  • Cooling method and device for secondary resistance-capacitance (RC) network absorber of traction transformer of electric locomotive
  • Cooling method and device for secondary resistance-capacitance (RC) network absorber of traction transformer of electric locomotive

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Embodiment 1

[0052] A traction transformer secondary resistance-capacity network absorber and its cooling device, based on the original RC resistance-capacity network absorber of SS8 locomotive, 1) keep the capacitance parameters of the original RC resistance-capacity network absorber unchanged, by changing the resistance structure, Increase the heat dissipation surface area and improve its working power, and spray a nano-coating that enhances heat radiation on the surface, which greatly improves the working performance of the resistor; 2) Install a cooling fan box, after the locomotive is powered When the traction fan is not turned on, it can change the ventilation environment of the resistor itself and the surrounding equipment, so as to ensure that the network absorber works at a normal ambient temperature (when the cooling fan box is not added, the ambient temperature sometimes far exceeds its Technical requirements); 3) In the case of keeping the original cabinet bracket unchanged, by ...

Embodiment 2

[0058] The principle of the second embodiment is the same as that of the first embodiment, except that the resistance of the traction transformer secondary side resistance-capacity network absorber of the second embodiment is different from the installation method of the cooling fan system, wherein the traction transformer secondary side resistance-capacity network absorber tor consists of four snubber resistors 201 (see attached Figure 5 ), the absorbing resistors 201 are arranged in two rows and combined horizontally to form a traction transformer secondary resistance-capacitance network absorber, and a cooling fan system 202 is installed at the bottom of the absorbing resistor 201, through which the cooling fan system 202 absorbs The resistor 201 performs forced cooling; the cooling fan system 202 is installed on the frame 203 at the bottom of the absorbing resistor 201 .

Embodiment 3

[0060] The principle of the third embodiment is the same as that of the first embodiment, except that the resistance of the resistance-capacity network absorber on the secondary side of the traction transformer in the third embodiment is different from the installation method of the cooling fan system, wherein the resistance-capacity network absorber on the secondary side of the traction transformer is different. tor consists of eight snubber resistors 301 (see attached Image 6 ), the absorbing resistors 301 are arranged and combined in four layers according to the upper and lower levels to form a traction transformer secondary resistance-capacitance network absorber, and a cooling fan system 302 is installed on the lateral side of the absorbing resistor 301, through which the cooling fan system 302 The absorbing resistor 301 performs forced heat dissipation; the cooling fan system 302 is installed on the frame 303 on the side of the absorbing resistor 301 .

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Abstract

Disclosed are a cooling method and a device for a secondary RC network absorber of a traction transformer of an electric locomotive. A cooling fan system is arranged nearby the secondary RC network absorber of the traction transformer and is controlled by a locomotive control system. When a control circuit for the working of a cooling fan is in a static state after a locomotive pantograph rises to be electrified, the cooling fan works automatically when a traction fan does not work, so that convection of ambient air of resistors of the RC network absorber and peripheral devices (or parts) is guaranteed, and ambient working temperatures of the resistors and the peripheral devices are reduced; and the traction fan controls an auxiliary chain of a contactor to cut off a working power supply of the cooling fan automatically, and accordingly, the added cooling fan stops automatically.

Description

technical field [0001] The invention relates to a heat dissipation method and device for components of an electric locomotive, in particular to a heat dissipation method and a device for a secondary resistance-capacity network absorber of an electric locomotive traction transformer. It is mainly used for the heat dissipation of the secondary resistance-capacity network absorber of the electric locomotive traction transformer. Background technique [0002] Electric locomotives often experience overvoltage during operation. Overvoltage mainly includes lightning strike overvoltage, grid change overvoltage, operation overvoltage, main circuit with node circuit and non-contact circuit overvoltage, etc. There are many reasons for overvoltage, but one thing is the same, that is, the sudden change of power parameters in the circuit. Lightning strike overvoltage is caused by the lightning wave generated during lightning strike and transmitted to the locomotive along the catenary. It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/20B61C17/00
Inventor 张光群谢陈刚刘文华戴国旺刘香
Owner 株洲通车机车配件有限公司
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