Volumetric capacity-variable constant-pressure maintenance device of pressure vessel

Abstract

The invention aims at providing a volumetric capacity-variable constant-pressure maintenance device of a pressure vessel. The volumetric capacity-variable constant-pressure maintenance device comprises a pressurization system, a pressure vessel system and a volumetric capacity-variable constant-pressure maintenance system which are sequentially connected, wherein the pressurization system comprises a water tank and a pressure test pump; the pressure vessel system comprises a pressure vessel, and the pressure test pump is respectively communicated with the water tank and the pressure vessel; and a one-way valve is mounted between the pressure test pump and the pressure vessel, a pipeline communicated with the water tank is arranged between the pressure test pump and the one-way valve, an overflow valve is mounted on the pipeline, and the pressure vessel is communicated with the volumetric capacity-variable constant-pressure maintenance system. The volumetric capacity-variable constant-pressure maintenance device has the advantages that the occupied space is small, the bulge test of tested equipment by the pressure vessel is realized; the magnitude of pressure in the pressure vessel cannot change along with the volumetric change of the tested equipment; the change of volumetric capacity is realized through the movement of a piston, and accurate regulation can be performed; a close-loop control circuit is constituted, the pressure regulation speed is quick; and accurate constant pressure can be realized through the volumetric capacity-variable constant-pressure maintenance system; and the volumetric capacity-variable constant-pressure maintenance device is simple to operate and convenient to use.

Description

technical field [0001] The invention relates to a pressure vessel device. Background technique [0002] With the continuous development of the ocean, the requirements for deep-sea operation equipment are getting higher and higher, which prompts us to continuously develop deep-sea operation equipment with higher performance. The developed equipment must be tested to verify its performance. However, the actual deep-sea test is not only time-consuming and laborious, but also difficult to achieve data collection. Therefore, most research units use deep-sea environment simulators to carry out pressure tests in laboratory environments. Usually, the equipment to be tested is placed in a pressure vessel, and then the liquid is pumped into the pressure vessel through a high-pressure pump to simulate the high pressure of the deep sea environment. [0003] Usually the volume of the pressure vessel cannot be too large, and because the compressibility of water is very small, when the e...

AI Technical Summary

Problems solved by technology

The author Fei Yufang and Xie Kaijun published in "Ocean Engineering" mentioned in the article "Simulation Test of Deep Sea Hydraulic System and Components" that the gravity pressure accumulator is used to keep the pressure of the pressure vessel stable. Due to its own inertia, the response lag is obvious when the pressure changes at a high speed, and it is easy to cause pressure oscillations

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