Cascade connected thyristor valve section in jacking connection

Abstract

The invention discloses a cascade connected thyristor valve section in jacking connection, which comprises a framework, wherein one end of the framework is provided with an elastic clamping device while the other end is provided with a jacking device, a valve bank consisting of thyristors and heat radiators are arranged alternately between the elastic clamping device and the jacking device, the cascade connected thyristor valve section in jacking connection has a horizontal structure, the heat radiators in the horizontal valve section are positioned and hung in the framework through tension springs connected between the heat radiators and valve section fixing plates, and positioning pins aiming at the thyristors are fixed on two lateral surfaces of each heat radiator along the axial direction of the valve section respectively; and the positioning pins make the thyristors and the heat radiators concentric. By adopting the structure, the central connecting lines of the heat radiators and the thyristors are coincided with the central line of the valve section through the positioning pins on the tension springs and the heat radiators in the horizontal cascade connected thyristor valve section in jacking connection, the stress of each thyristor is ensured to be even, and the mechanical stability of the whole valve section is improved.

Description

technical field [0001] The invention relates to a rectification or inverter device of high-power electric power electronics in a power system, in particular to a high-power top-pressure-connected series thyristor valve section. Background technique [0002] The traditional high-power semiconductor component pressing method is formed by connecting the pressing plates on both sides and the heat sink through screws and nuts. In order to ensure the reliability and stability of this pressing method, two pressing belts on both sides are used to ensure the valve However, there are many disadvantages in this crimping method. First, it is difficult to adjust the parallelism and perpendicularity of the positions of each component when assembling and installing the valve section; It is a material with certain elasticity, such as GRP material. After the equipment has been operated for a long time, the elastic material will age, which will cause insufficient pressure between the thyristo...

AI Technical Summary

Problems solved by technology

The constant pressure mechanism of the series thyristor valve section connected by the top pressure adjusts the clamping force between the radiator and the thyristor by adjusting the adjusting bolt on the flange at the end, and uses the elastic force of the disc spring to adjust the clamping force between the radiator and the thyristor. However, the series thyristor connected by the top pressure When installing the thyristor and the radiator in the constant pressure mechanism of the valve section, the frame must be placed vertically, and then the thyristor and the radiator must be placed at intervals manually. The thyristor and the radiator must be manually aligned with the central axis of the frame, and then Use the top pressure guide rod to tighten, and the manual alignment method is not only troublesome to assemble but also has large errors, which may easily cause misalignment between the frame, the top pressure guide rod, the thyristor and the radiator; in addition, when adjusting the thyristor by rotating the adjustment bolt When the clamping force is high, due to the processing accuracy of the adjustment bolt, the top pressure guide rod and the transition adjustment round aluminum, it is easy to cause radial runout of the top pressure guide rod or the transition adjustment round aluminum due to the rotation of the adjustment bolt. The top pressure guide rod and the transition adjustment round aluminum or thyristor are not concentric, the stress of the thyristor is uneven and the deflection occurs, and the mechanical stability of the product is poor.

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