Self-calibration combined type water level gauge

Abstract

The invention discloses a self-calibration combined type water level gauge. The gauge is used for measuring the water level of a boiler drum and comprises a double-color water level gauge; the double-color water level gauge comprises a water level gauge body; the top of the water level gauge body is provided with a steam side connecting pipe, and the lower part of the water level gauge body is provided with a water side channel; the gauge further comprises a separation membrane box differential pressure transmitter and an integrator; the separation membrane box differential pressure transmitter comprises a low-pressure membrane box, a high-pressure membrane box and a differential pressure transmitter; the signal output end of the differential pressure transmitter is connected with the signal input end of the integrator; the gauge also comprises a first temperature sensor, a first pressure sensor, a second temperature sensor and a second pressure sensor, wherein the first temperature sensor and the first pressure sensor are installed on the steam side of the boiler drum, and the second temperature sensor and the second pressure sensor are installed on the water side of the boiler drum; the signal output ends of the first temperature sensor, the first pressure sensor, the second temperature sensor and the second pressure sensor are connected with the signal input end of the integrator. After the method is applied, the water level in the boiler drum can be visually known, and the real water level in the boiler drum can be relatively accurately mastered.

Description

technical field [0001] The invention relates to a water level gauge for measuring the water level of a boiler drum, in particular to a self-calibrating combined water level gauge. Background technique [0002] In the prior art, the two-color water level gauge is mainly an on-site direct-reading instrument used to monitor the water level of the steam boiler drum. The basic structure mainly includes the water level gauge body, which has a vertical liquid channel inside the water level gauge body. A short vertical pipe connected with the liquid channel is installed, and the top of the short vertical pipe is connected with a horizontal steam side connecting pipe, and one end of the steam side connecting pipe is connected with a steam inlet valve, and the lower part of the water level gauge body has a The channel is connected with a horizontal water side channel, one side of the water side channel is connected with a horizontal water side connecting pipe, and one end of the water...

AI Technical Summary

Problems solved by technology

[0003] The advantage of the above-mentioned two-color water level gauge is that it can monitor the water level in the boiler steam drum intuitively. The disadvantage is that the error is relatively large. The main reason is that the temperature of the water entering the body of the water level gauge is lower than the temperature of the water in the steam drum, so the display The outlet water level is usually lower than the real water level in the steam drum

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