Exhaust device used for hydraulic test of pressure vessel

Abstract

The invention relates to an exhaust device used for a hydraulic test of a pressure vessel, which comprises an exhaust pipe, a connecting mechanism and a globe valve, wherein the exhaust pipe is arranged inside the pressure vessel and used for guiding the gas inside the pressure vessel out of the pressure vessel; the connecting mechanism is arranged on the wall of the pressure vessel and is connected with the exhaust pipe; the globe valve is arranged outside the pressure vessel, connected with the connecting mechanism and used for cutting off or adjusting the flux of the gas exhausted out of the exhaust pipe. The exhaust device is characterized in that the exhaust pipe is a flexible soft pipe; and the other end of the exhaust pipe is fixed on a floating part that can float on water. Compared with the prior art, the exhaust device solves the problem that the large pressure vessel equipment has no suitable discharging exhaust point during the water-filling process of the hydraulic test, has good exhaust effect, avoids the hidden safety problem caused by the gas accumulated on top of the vessel during the water-filling process, and shortens the pressurizing time of the hydraulic test;furthermore, the exhaust device has simple structure, is safe and feasible, is convenient for manufacturing, has low cost, can be applicable to the hydraulic tests of the equipments of various specifications and has wide application prospect.

Description

technical field [0001] The invention relates to an exhaust device for a pressure vessel hydraulic test. Background technique [0002] In the final stage of manufacturing pressure vessels such as large towers, reactors, separators, and pressure storage tanks used in petrochemical equipment, the strength test is often completed by hydraulic test, and the tightness test is usually completed by air tightness test. During the hydrostatic test of the container, after filling the container with water, the air inside the container needs to be exhausted. If the gas inside the container cannot be completely exhausted, it will affect the test result of the container strength. For this reason, CN1325023A discloses "An Effective Method for Solving Pressure Vessel Hydraulic Test", which is to set a circle center blind plate between the water injection of the pressure test equipment and the flange of the exhaust pipe mouth, and a vertical hole is drilled in the center of the blind plate. ...

AI Technical Summary

Problems solved by technology

However, the rigid exhaust pipe made of metal needs to be connected to the pressure vessel by welding, and it needs to be cut and removed after the pressure measurement is completed. This not only increases the weight of the vessel, but also brings complicated operation, time-consuming and labor-intensive; at the same time, Due to the uncertainty of the container orientation during pressure measurement, it is very difficult to design a universal exhaust pipe that can completely remove the air in the container

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