Differential pressure type densimeter measuring and protecting device

Abstract

The invention relates to a differential pressure type densimeter measuring and protecting device, and belongs to the technical field of densimeter measuring and protecting devices. The device comprises a main medium pipe, a bypass medium pipe fixed to the side face of the main medium pipe, diaphragm capsules distributed on the bypass medium pipe up and down, and a low-pressure sensor and a high-pressure sensor which correspond to each other arranged in the sensor sides of the two diaphragm capsules respectively; the two pressure sensors are provided with corresponding pressure guide pipes respectively, the two pressure guide pipes are provided with protective sleeves, and the protective sleeves are connected with a differential pressure transmitter. According to the bypass medium pipe, the flow speed is effectively controlled, and measurement is stable. Each pressure sensor is provided with the diaphragm capsule for protection, the medium does not directly scour a diaphragm of the pressure sensor when flowing through a measuring chamber, but is isolated by the diaphragm capsule and transmits a pressure signal to the pressure sensor, so that the service life of the product is ensured, and a measurement error caused by particle medium or bubble aggregation is prevented.

Description

technical field [0001] The invention relates to a differential pressure density meter measurement and protection device, which belongs to the technical field of density meter measurement and protection devices. Background technique [0002] The flow rate of the medium feed pipe is generally relatively fast, and the fast flow rate will cause large measurement errors and measurement instability, or even impossible measurement. Therefore, it is necessary to control the flow rate in order to measure stably. To control the flow rate, generally consider the bypass installation method and realize it through a differential pressure density meter. During the use of the differential pressure density meter, if no effective protection device is installed, the diaphragm of the pressure sensor will be washed, corroded, and blocked by the medium for a long time, which will not only reduce the measurement accuracy, but even cause the diaphragm to be damaged, so that it cannot be realized. ...

AI Technical Summary

Problems solved by technology

During the use of the differential pressure density meter, if no effective protection device is installed, the diaphragm of the pressure sensor will be washed, corroded, and blocked by the medium for a long time, which will not only reduce the measurement accuracy, but even cause the diaphragm to be damaged, so that it cannot be realized. Purpose of measurement

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