Remote real-time liquid pressure measurement system

Abstract

The invention discloses a remote real-time liquid pressure measurement system, which belongs to the technical field of nuclear chemical equipment. The system comprises a device stored with a to-be-measured liquid, a pressure measurement box and an air supplementing system, wherein the pressure measurement box is connected with the device stored with the to-be-measured liquid through a connection pipe; the pressure measurement box is separated into a pressure room and a measurement room vertically communicated through a separator; the upper half part of the measurement room is provided with an inverted cup to be connected with a measurement pipe; the top part of the pressure measurement box is connected with a pressure difference sensor through a comparison pipe; the pressure difference sensor measures the pressure difference between the comparison pipe and the measurement pipe, an electromagnetic valve is controlled through the pressure difference signals, compressed air is then controlled to supplement air to the pressure measurement box, the liquid level in the pressure measurement box is ensured to be lower than the bottom part of the inverted cup, and the air is ensured not to enter the to-be-measured liquid at the same time; and the measurement pipe is connected with a pressure measurement end, and the pressure of the to-be-measured liquid is obtained through measuring the air pressure. According to the measurement system of the invention, while remote measurement is realized, interference influences on a to-be-measured system are little, and the measurement system has an important application prospect in nuclear chemical industry and particularly in the field of irradiated fuel reprocessing.

Description

technical field [0001] The invention belongs to the technical field of chemical and chemical industry measurement, in particular to a remote measurement system for liquid pressure in nuclear chemical process equipment. Background technique [0002] In many fields such as chemical industry, petrochemical, pharmaceutical and food, especially in the process of nuclear chemical industry, the remote measurement of liquid pressure in equipment is an important technology. For the liquid pressure measurement of general chemical process, the pressure sensing element can be directly set at the measurement point for measurement, but for some chemical processes with relatively harsh conditions, this method cannot be applied. For example, for the pressure measurement of radioactive fluid in nuclear chemical industry, the life of the pressure sensing element set at the measurement point is greatly shortened by the influence of radiation, and the replacement and maintenance of the element ...

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Problems solved by technology

[0003] The purpose of this invention is to propose a remote real-time measurement system for liquid pressure, so that the pressure sensing element of the system is far away from the measurement point, without continuous gas input, thereby solving the problem that the pressure element is easily damaged and difficult to replace and maintain under harsh measurement conditions, and at the same time Avoid the adverse effect of gas input on the system to be measured, so as to better realize the real-time monitoring of liquid pressure in the nuclear chemical process and ensure the normal operation of nuclear chemical equipment

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