Valve air pressure test device

Abstract

The invention belongs to the technical field of valve air pressure test equipment. Aiming at solving the problems that a groove is destroyed and sealing is instable when end face sealing is performedon a welding groove type valve by adopting an existing manner, the invention discloses a valve air pressure test device. The valve air pressure test device comprises a support frame and sealing components; the support frame is provided with two sealing components, and the two sealing components are oppositely arranged at intervals along the same horizontal direction; each sealing component comprises a gland and a support ring; each gland is of a step structure and comprises a first step, a second step and a sealing element, the first step stretches into a port of a valve and performs location,the outer diameter of the second step is larger than the outer diameter of the first step, and the sealing element is located at a position where the first step and the second step are connected; andone end face of each support ring is an inclined plane, an inclination angle is equal to an angle of a groove, each support ring sheathes the corresponding second step, and each inclined plane keepsparallel correspondence with an oblique plane of the groove. The valve air pressure test device disclosed by the invention seals the end face of the valve and can protect the groove and guarantee sealing stability.

Description

technical field The invention belongs to the technical field of air pressure test equipment for valves, and in particular relates to an air pressure test device for valves with welded grooves on the valve opening. Background technique The high-temperature gas-cooled reactor is an advanced nuclear energy technology with the characteristics of the fourth generation. Helium is used as the primary circuit coolant, and the nuclear fuel of the high-temperature reactor uses spherical ceramic-coated fuel and is driven by helium to realize the high-temperature gas-cooled reactor nuclear power plant demonstration The project (HTR-PM) does not stop fuel loading, unloading and circulation operation, so some pipelines, valves and online components in the high temperature reactor process system need to work under the high temperature and high pressure helium atmosphere. Among them, in order to ensure the sealing reliability of the valve during the working process, it is necessary to carry...

AI Technical Summary

Problems solved by technology

In order to solve the problems of damage to the groove and unstable sealing when using the existing method to seal the valve port of a valve with a welded groove, the present invention proposes a valve air pressure test device

Images