Valve body machining tool clamp for butt welding connection of high-pressure valve

Abstract

The invention discloses a valve body machining tool clamp for butt welding connection of a high-pressure valve. The clamp comprises a clamping rotary disc, a positioning frame is arranged on the clamping rotary disc in a linked mode, the positioning frame comprises an upper positioning plate, a right positioning plate, a lower positioning plate and a left positioning plate which are sequentially connected to form a closed loop, a base used for containing a valve body is arranged on the lower positioning plate in a rotating mode, and a clamping mechanism used for clamping the valve body is arranged on the base; a plurality of positioning holes are formed in the base in the rotating direction of the base, and a positioning mechanism arranged in one positioning hole in a penetrating mode andpositioning the base is arranged on the lower positioning plate. The clamp is firm in clamping, safe, reliable, high in machining efficiency and accurate in clamping and positioning, and the machiningprecision of the valve body is guaranteed.

Description

technical field [0001] The invention relates to the technical field of valve processing, in particular to a valve body processing fixture for a butt-welded high-pressure valve. Background technique [0002] The valve body of the valve is connected to the pipes at both ends, and the valve body is usually also connected to the bonnet. Therefore, the valve body usually has three connection ends, and the processing of the valve body usually needs to process these three connection ends. For flanged valves, usually one end flange is used as the clamping and positioning reference to process the other end flange, and then the valve body is reversed, and the other end flange is used as the clamping positioning reference for processing. The processing of the flange in the valve body is usually based on the lower end of the valve body as the clamping and positioning reference. In this way, the processing of the valve body needs to change the clamping and positioning reference three ti...

AI Technical Summary

Problems solved by technology

In this way, the processing of the valve body needs to change the clamping and positioning reference three times, which is not only labor-intensive and time-consuming, but also needs to be readjusted and calibrated every time the positioning reference is changed. Therefore, the use of traditional valve body clamping and positioning fixtures is not only inefficient, but also the processing accuracy cannot be guaranteed.

[0003] In order to ensure the reliable connection between the valve and the pipeline, the high-pressure valve usually adopts butt welding connection. Compared with the clamping of the flange end, the clamping of the butt welding end is more difficult, the clamping positioning is difficult, and the reliability is low.

On the other hand, due to the heavy weight of the high-pressure valve body, the clamping position is far away from the center of gravity of the valve, and the rapid rotation of the valve body during processing is very dangerous. Fixtures and methods, not only have lower processing efficiency and poorer processing accuracy, but also have great safety risks

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