On-line repair automatic cutting device for valve seat sealing ring of nuclear grade gate valve

Abstract

The invention relates to the technical field of on-line repair of valve seat sealing rings, and particularly discloses an on-line repair automatic cutting device for a valve seat sealing ring of a nuclear grade gate valve. The device comprises an X-direction mechanism, a Y-direction mechanism, a Z-direction mechanism and a spindle integrated structure, wherein the spindle integrated structure cancontrol a cutter at the lower end of the spindle integrated structure to perform rotary cutting, and the spindle integrated structure is installed on the Y-direction mechanism to enable the cutter tomove up and down in the vertical Y-direction; the Y-direction mechanism is connected with a moving plate in the X-direction mechanism, and the moving plate can move left and right in the X direction relative to a fixed plate A of the X-direction mechanism; and the Z-direction mechanism is connected with the moving plate of the X-direction mechanism, and the Z-direction mechanism can move back andforth in the Z direction. The device can realize accurate positioning and full-automatic cutting of the cutting device in the X, Y and Z directions; the device can ensure sufficient processing precision under a high radiation environment, and meanwhile, the irradiation dose of personnel is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of on-line repairing of valve seat sealing rings, and in particular relates to an automatic cutting device for on-line repairing of nuclear-level gate valve seat sealing rings. Background technique [0002] Nuclear grade valves play the role of controlling and regulating the pressure, temperature, flow direction and flow rate of the medium in nuclear power plants. Among them, the most widely used and most common is the gate valve, but the design, experiment, manufacturing process, and testing system of the gate valve with a high nuclear safety level are only mastered by a few western companies. Therefore, when the valve sealing surface has large defects that are difficult to repair, Nuclear power plants can only eliminate defects by replacing the entire valve. At the same time, it is also necessary to face a long procurement cycle for gate valves with a high nuclear safety level, and it is likely that they ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an automatic cutting device for on-line repair of nuclear-level gate valve seat sealing rings, which can solve the defects that are difficult to repair on the current nuclear-level gate valve seat sealing surface. In order to realize the automatic cutting of the gate valve seat ring in a high-radiation environment, in order to achieve the goal of reducing the radiation dose of personnel

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