SF6 (Sulfur Hexafluoride) micro-water content transducer calibration device

Abstract

The invention belongs to the field of detectors, and in particular relates to an SF6 (Sulfur Hexafluoride) micro-water content transducer calibration device. The SF6 micro-water content transducer calibration device comprises a container (2), an air micro-pump (4), a high-precision dew point sensor (5), an inner connection pipe (8), an outer connection pipe (22), a first one-way check valve (9), a second one-way check valve (10), a third one-way check valve (11), a fifth one-way check valve (13), a high-precision pressure transducer (24), a high-precision temperature transducer (25), a first electromagnetic valve (26), a third electromagnetic valve (28), a vacuum pump (29), a high-purity nitrogen container (31), a programmable controller (32) and a computer (42), wherein the air micro-pump (4) and the high-precision dew point sensor (5) are arranged in the container (2), and detection ports of the high-precision pressure transducer (24) and the high-precision temperature transducer (25) are respectively communicated with the container (2). The SF6 micro-water content transducer calibration device disclosed by the invention has the advantages of high accuracy, convenience for operation and fast calibration speed.

Description

technical field [0001] The invention belongs to the field of detection devices, in particular to a SF 6 Micro water content transmitter calibration device. Background technique [0002] High-voltage switch is one of the important equipment in power plants and substations. In order to safely and reliably send power to the national grid, it is necessary to ensure that high-voltage switches and other equipment work normally and reliably. In the high-voltage switch GIS equipment, the trace moisture content of SF6 shielding gas plays an important role in the performance of the high-voltage switch and the normal operation of the equipment. The main manifestations are: the insulation performance of the switch caused by excessive moisture content decreases, resulting in high-voltage breakdown; due to the decline in insulation capacity, partial discharge occurs near the electrodes at both ends, which leads to penetrating flashover after a long time; directly affects the breaking ...

AI Technical Summary

Problems solved by technology

Using this method to calibrate the SF 6 micro-water content transmitter can only calibrate the SF 6 micro-water content transmitter under normal pressure, and cannot achieve SF 6 The pressure calibration of the water content transmitter, and in the actual application of the high pressure switch, the pressure of the SF 6 gas is usually 0.45MPa or 0.6MPa, so the The SF 6 micro-water content transmitter calibration device designed according to this principle has problems such as low accuracy, complicated operation, and slow calibration speed.

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