Throttling device with built-in high-precision sensor

Abstract

The invention relates to a throttling device with a built-in high-precision sensor which comprises a speed equalizing pipe, a built-in sensing part and a transmission display part, wherein the speed equalizing pipe is inserted into a measuring pipeline and the upper end of the speed equalizing pipe is exposed outside the measuring pipe, the built-in sensing part is arranged in the speed equalizingpipe, and the transmission display part is arranged at the upper end of the speed equalizing pipe and connected with the built-in sensing part. The axis of the speed equalizing pipe is vertical to the axis of the measuring pipeline. The speed equalizing pipe is provided with more than one positive drainage hole on the upstream surface between the upper sealing plate and the lower sealing plate, and with more than one reverse drainage hole on the back flow surface between the upper sealing plate and the lower sealing plate, and when more than two reverse drainage holes are arranged, the reverse drainage holes are sequentially distributed along the axial direction of the speed equalizing pipe. In the throttling device with a built-in high-precision sensor, the built-in sensing component issealed in the speed equalizing pipe, so that the problem of inaccurate pressure induction of the existing differential pressure type flow meter is solved, the pressure value loss in measurement is reduced, the measurement precision is improved, and the problem of unstable measurement caused by bubble generation in the pressure induction pipe in the prior art is solved.

Description

technical field [0001] The invention relates to the field of flow measurement, in particular to a throttling device with a built-in high-precision sensor. Background technique [0002] In an industrial configuration, all process links of industrial production and manufacturing need to be monitored and controlled by corresponding control systems. These functional control systems are usually distributed in key positions in industrial production and production processes, and are controlled on-site through control loops or networks connected to the loops and networks in the control room. This puts forward higher requirements for the monitoring of the control system, and needs to solve a series of various problems that will affect the accuracy. In the existing throttling device, because the pressure induction sensor is installed outside, the pressure induction is too long, and pressure loss will occur during the pressure induction process, and air bubbles are easily generated in...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above disadvantages and provide a throttling device with a built-in high-precision sensor. The device seals the built-in sensing components in the uniform velocity tube, which solves the problem of inaccurate pressure introduction in the existing differential pressure flowmeter. , reducing the loss of pressure value in the measurement, improving the measurement accuracy, and solving the problem of unstable measurement caused by bubbles in the pressure induction tube in the prior art

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