Hydraulic accumulator gas charging device and its gas charging method based on oilfield petrochemical

Abstract

The invention relates to the technical field of fluid pressure actuators, and mainly relates to an accumulator inflation device, specifically a hydraulic accumulator inflation device and an inflation method based on oilfield petrochemicals, which are used to solve the problem of charging nitrogen mainly by the pressure in a nitrogen tank at present. In the accumulator, when the final pressure of the gas in the accumulator is required to be high, the accumulator cannot be inflated in this way, and the scope of application is narrow; and the existing inflating device cannot be based on the actual situation. Select the optimal inflation mode and automatically inflate the problem, including the nitrogen tank, the gas delivery pipe is connected with the nitrogen tank, the gas charging pipe is connected with the accumulator, and a booster box is arranged between the nitrogen tank and the accumulator; the present invention can not only According to the actual situation, the optimal inflation mode can be obtained and automatically inflated. It can also boost the output nitrogen. When the gas pressure in the accumulator is required to be high, it can also be inflated smoothly. It has a wide range of applications.

Description

technical field [0001] The invention relates to the technical field of fluid pressure actuators, and mainly relates to an accumulator inflation device, in particular to an oilfield petrochemical-based hydraulic accumulator inflation device and an inflation method thereof. Background technique [0002] The hydraulic accumulator is an energy conversion element that converts the pressure energy of the working medium into other energy forms such as potential energy and stores it. The hydraulic accumulator can release its stored energy for a short time and use it for the work of the system; in addition, The hydraulic accumulator can also absorb the vibration and shock generated by the system. The placement position in the hydraulic circuit varies with its function. When absorbing hydraulic shock or pressure pulsation, it should be installed near the shock source or pulsation source. Near the relevant actuators, hydraulic accumulators can be divided into gravity type, spring type ...

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Problems solved by technology

[0003] After a period of use, the internal air pressure of the hydraulic accumulator decreases, which affects the energy supply of the accumulator, and it is necessary to replenish the gas in the accumulator from time to time. At present, the nitrogen cylinder is directly connected to the accumulator. In the air chamber, nitrogen gas is charged into the accumulator by relying on the pressure of the nitrogen tank, but this charging method can only meet the condition that the gas pressure in the accumulator is low. When the gas in the accumulator is required to reach the final When the pressure is high, that is, when the air pressure value in the nitrogen tank is lower than the final air pressure value in the accumulator, the accumulator cannot be inflated in this way, and the scope of application is narrow, which is not conducive to use, and the existing The inflatable device cannot select the optimal inflation mode and inflate automatically according to the actual situation, the operation is not easy enough, and it is not conducive to improving its scope of application, and the use effect needs to be improved;

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