Water leakage detection device used for high voltage converter and combined device and method thereof

Abstract

The invention discloses a water leakage detection device used for a high voltage converter and a combined device thereof. One end of a water-sensitive member is connected with the sidewall of the left side of a shell, and the other end is connected with a light shading slide block. The light shading slide block is also connected with the left end of an elastic member. The right end of the elastic member is connected with the sidewall of the right side of the shell. A light signal transmitting end is installed on the front sidewall of the shell or installed on the rear sidewall of the shell. A light signal receiving end is installed on the opposite sidewall of a light signal transmitter. Light shading and sensitive material is immersed in the water and then the tensile strength is reduced and the material can be pulled apart by the elastic member so that the light shading slide block is enabled to move to the right side of the shell under the pulling effect of the elastic member. When the pulling force of the elastic member and the resistance of the light shading slide block are balanced, the light shading slide block stops moving and can shade light signal transmission between the light signal transmitting end and the light signal receiving end. The invention also discloses the water leakage detection combined device used for the high voltage converter and a method thereof. The water leakage detection device is convenient to install and maintain so that the water leakage situation of the high voltage converter can be accurately detected.

Description

technical field [0001] The invention belongs to the application field of power electronics and power systems, and in particular relates to a water leakage detection device, a combination device and a method for a high-voltage converter. Background technique [0002] High-voltage converters are used to convert AC voltage to DC voltage, or inversely convert DC voltage to AC voltage. A high voltage converter contains a large number of power electronic devices, such as thyristors, IGBTs, etc. These power electronic devices will lose power and emit a lot of heat when they work. In addition, the high-voltage converter may also contain some other heat loss equipment, such as reactors, which also emit a large amount of heat energy during operation. In order to ensure the normal operation of the high-voltage converter, a water cooling system is generally used in the high-voltage converter to cool the heating equipment. In the high-pressure converter, the water cooling system that ...

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Problems solved by technology

The problem with this method is that the tipping bucket itself has a certain height. In order to introduce the leaked cooling water into the tipping bucket, a large-area drainage plate must be installed above the tipping bucket. Pour it out, so that there will be a lot of space under the converter for the water leakage detection system; in addition, the tipping bucket itself has a rotating shaft mechanism. After a long-term operation of the high-voltage converter, adhesion may occur between the rotating shaft mechanisms of the tipping bucket. It will reduce the sensitivity of the tipping mechanism itself, which will affect the detection of water leakage faults in the cooling system

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