Converter valve tower self-locking draining adapter

Abstract

The invention discloses a converter valve tower self-locking draining adapter which comprises a male connector connected with a water guide pipe and a female connector connected with a communicating water pipe connector at the bottom of a valve tower. The male connector is in butt joint with the female connector. The female connector comprises a hollow cylindrical body, a limit sleeve, a hollow outer sleeve, and a movable shaft disposed in the body. A conical spring pushing the movable shaft to move is disposed between the right end of the movable shaft and the outer sleeve. An inverted trapezoid limit groove for accommodating steel balls and locking the position of the male connector is peripherally formed along in the coordination part of the male connector and the female connector. The converter valve tower self-locking draining adapter has the advantages that the maintenance efficiency can be increased, the skill requirements of maintainers are lowered greatly, and the adapter is especially suitable for emergency maintenance. Compared with the existing tools, the converter valve tower self-locking draining adapter can directly reduce direct-current shutdown by 6 hours per electrode or per valve set, and the output value can be increased by about 31,500,000 yuan if a single electrode or a single valve set transmits 1030MW of electricity.

Description

technical field [0001] The invention relates to the field of ultra-high voltage or ultra-high voltage direct current transmission, in particular to a self-locking drainage adapter for a valve tower of a converter valve. Background technique [0002] With the construction and development of ultra-high voltage and ultra-high voltage direct current transmission projects, the water cooling method adopted by converter valves has been popularized and widely used in direct current transmission projects. During the maintenance process of converter valves, it is often necessary to drain a single valve tower. At present, there is no special drainage tool for drainage of a single valve tower. Only by removing the connecting water pipe joint at the bottom of the valve tower, and then using a fixed tie to connect it with the water diversion pipe. The inconvenience of the existing method is: [0003] 1. Since the whole process mainly relies on manual tying, not only requires maintenance p...

AI Technical Summary

Problems solved by technology

[0003] 1. Since the whole process mainly relies on manual tying, not only requires maintenance personnel to have skilled tying techniques, but also to use strictly flat water pipe joints, otherwise it will easily lead to water seepage or leakage, which will affect equipment maintenance;

[0004] 2. The docking process is time-consuming and poorly controllable. Long-term use of the existing method is easy to wear the Unicom water pipe joint at the bottom of the valve tower, which will seriously cause the joint to shut down due to water leakage;

[0005] 3. The existing method is not conducive to the maintenance of the equipment in the emergency repair of the accident

Images