Device and method for detecting subsea valve in laboratory

Abstract

The invention discloses a device and a method for detecting a subsea valve in a laboratory. The device for detecting the subsea valve is connected with the subsea valve, and comprises an air source, an air source switch, an air source triplet, a three-position four-way manual valve, a water groove, a pressure reducing valve, a two-way manual valve, an air inlet pipeline, an air outlet pipeline, a bottom valve pressure test tool and a pressure test cover; a flange plate at the bending end of the subsea valve is connected with the bottom valve pressure test tool by a sealing pad, the centre of the bottom valve pressure test tool is connected with a first pressure inlet, a flange plate at the cylinder end of the subsea valve is connected with the pressure test cover by a bolt and the sealing pad, and the pressure test cover is connected with a second pressure inlet. The device can detect the tightness of the cylinder of the subsea valve, the tightness and the reverse tightness of the structure of the subsea valve, and has advantages of simple structure, convenient operation, easy observation, reasonable arrangement and convenient maintenance. The pressure reducing valve in the gas circuit can automatically adjust pressure in an air path, prevent the excessive opening pressure of the subsea valve and reduce the impact to the subsea valve.

Description

technical field [0001] The invention relates to a device and a detection method for detecting the sealing performance of a sea-sea valve and a sea-sea valve cylinder. Background technique [0002] Submarine valves are widely used under the tanks of various oils and light non-corrosive media to realize the functions of loading and unloading oil from the lower part of refueling trucks and oil transport trucks. The valve is composed of a valve body, a valve core, a spring, a piston, a cylinder opening mechanism and a seal, etc., and the seal is mainly achieved by the force of the spring and the cylinder. When the medium in the tank needs to be released, the pressure gas source pushes the piston to achieve the compression spring action, pushing the valve core away from the seal, the valve opens, and the fluid in the tank can be delivered to other devices. It is the most critical component of transportation and refueling vehicles, and directly affects the product quality of refu...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a laboratory detection device for seabed valves and its detection method, to solve the technical problems of complex structure, unreasonable layout and difficult maintenance of the existing detection device; and to solve the cumbersome operation and inconvenience of the existing detection method The problem of observing the experimental results; it is also necessary to solve the problem that the opening pressure of the existing detection device is too high

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