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
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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 and the installation method of the cooling fan system in the second embodiment are different, 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 of upper and lower horizontally and combined together 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 resistance 201 performs forced heat dissipation; the cooling fan system 202 is installed on the frame 203 at the bottom of the absorption resistance 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-capacitance network absorber on the secondary side of the traction transformer and the installation method of the cooling fan system in the third embodiment are different. tor consists of eight snubber resistors 301 (see attached Figure 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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