Ball valve with pressure detection

Abstract

The invention discloses a ball valve with a pressure detection function and belongs to the technical field of valves. The ball valve comprises a valve body and a valve ball, wherein a valve seat is arranged at an outlet channel of the valve body and can be attached to the valve ball to be sealed. The ball valve is characterized in that an annular groove is formed in the sealing face of the valve ball / the valve seat, so that when the ball valve is totally closed, a closed cavity is formed at the sealing face by the annular groove; a through pressure measurement hole is formed in the valve body and the valve seat and communicates the annular groove with the outside of the valve body. According to the ball valve with the pressure detection function, the technical problem that line sealing is adopted between a valve element and a valve seat of a traditional ball valve, so that the sealing effect is poor is solved; the technical problem that in the use process, the inner leakage of the ball valve needs to be detected is also solved, the valve can be taken down from a pipeline without the need for stopping conveying media, and therefore whether the sealing face of the valve element and the valve seat of the ball valve is damaged or leaked can be monitored online.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a ball valve with pressure detection. Background technique [0002] As a kind of valve, the ball valve has been widely used to connect or cut off the conveying medium in the pipeline. Since the medium conveyed in the pipeline is usually gas or liquid, the sealing performance of the ball valve is required to be high, especially when the ball valve is used. There is no external leakage and internal leakage, and the external leakage of the valve stem and each joint can be easily detected from the outside of the valve. However, when the valve is in a closed state, whether there is an internal leakage problem cannot be effectively detected at present. At the same time, the frequent switching of the valve, the sealing pair of the sealing surface of the valve ball and the sealing surface of the valve seat is easy to wear and cause leakage. When the leakage is serious, the valve seat sho...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a ball valve with pressure detection to solve the problem of the line between the valve core and the valve seat in the traditional ball valve. Sealing, the technical problem of poor sealing effect, the sealing contact between the valve core and the valve seat can be increased through the arrangement of the annular groove, so that the sealing surface can be effectively formed to ensure the sealing effect

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