A device for balancing pressure fluctuations in a liquid circulation circuit

Abstract

The invention relates to a method and a device for realizing pressure balance in real time, in particular to a device for balancing the pressure fluctuation of a liquid circulation loop. A pressure fluctuation balancing system is formed by connecting a pressure buffer and a gas buffer tank with a connection pipeline; the pressure buffer is arranged in an outer drum body and the integral structure of the pressure buffer comprises an inner corrugated pipe, an outer corrugated pipe, an inner shaft, a limiting mechanism, an outer container, a mirror surface structure and a displacement measuring system; the inner corrugated pipe and the outer corrugated pipe are connected by the inner shaft, so the motion displacement of the inner corrugated pipe can be transmitted to the outer corrugated pipe for realizing the sealing of the inner shaft; the gas buffer tank is connected to the gas side of the buffer by the connection pipeline so as to realize that the pressure at the gas side is kept instant. The device for balancing the pressure fluctuation of the liquid circulation loop has the characteristics of compact structure, convenient operation, high regulation precision, short pressure balancing time, stable pressure and the like. The device belongs to an efficient and feasible device for regulating the work pressure of the system of the closed liquid circulation loop.

Description

technical field [0001] The invention relates to a method and device for realizing pressure balance in real time, in particular to a device for balancing pressure fluctuations in a liquid circulation circuit. Background technique [0002] In a closed liquid circulation loop system, pressure fluctuations have a great impact on the system, and the impact pressure is often as high as ten times or even dozens of times the normal operating pressure, which in turn causes damage to the circulation system. Especially in the cryogenic liquid closed cycle system, the change of the heat load of the system usually causes the temperature of the cryogenic medium to change, which in turn leads to significant fluctuations in the circulating working pressure. In order to ensure the normal and stable operation of the circulation system, it is necessary to adjust the pressure of the system so that the circulation working pressure remains constant within a certain range. [0003] For the adjust...

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Problems solved by technology

However, this method has certain deficiencies in the regulation of pressure fluctuations in the low-temperature liquid circulation loop system: the gas-liquid phase change in the Dewar to regulate the pressure cannot achieve precise control, so the regulation accuracy is poor; and due to the electric heating There is a time delay in the adjustment of the power of the device, and the control lag will cause the system pressure to fluctuate violently in a short period of time, which is not conducive to the stable operation of the liquid circulation loop system; although the Chinese patent publication number is CN101620036A, a bellows volume displacement based on pressure balance The detection device for the relationship discloses a device for measuring the displacement and volume of a bellows under a certain working pressure, especially a pressure-balanced bellows volume-displacement relationship that can improve the measurement accuracy of the volume and displacement of the bellows detection device, but the structure of the device is relatively complicated, and it is obviously different from the measurement method in the invention

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