Built-in flow detection device

Abstract

The invention discloses a built-in flow detection device. The device comprises an electromagnetic induction module, a signal processing module and a charging module; the electromagnetic induction module comprises a fixing support arranged to be perpendicular to the flow direction of fluid in a to-be-detected pipeline, a cross structure support arm uniformly dividing the fixing support into four areas, an impeller rotationally connected to the center of the cross structure support arm and permanent magnets which can rotate along with the impeller, induction coils are embedded in the four areasrespectively, the impeller comprises four blades with the permanent magnets, and when the fluid flows to drive the blades to rotate, the induction coils can cut magnetic lines to generate electric signals. The device is not connected with a wire outside the pipeline, electricity is supplied to a fully sealed circuit by means of a built-in storage battery and a self-generating charging system, potential safety hazards such as tubing pressure gas leakage caused by the wire to pipe penetrating wall connection and bare contact of an electrical connection point and a gas medium are completely eradicated, and the problem of difficult continuous power supply for a built-in circuit module used for a long time is solved.

Description

technical field [0001] The invention belongs to the field of gas pipeline components, in particular to a built-in flow detection device. Background technique [0002] In the construction of urban gas pipeline network, there are generally two ways to connect pipeline flowmeters for flow detection. One is to select a suitable independent flowmeter during pipeline network construction and weld it into a specific point of the pipeline in series. The ultrasonic flowmeter is connected to the external binding method at a specific point of the pipeline. There are obviously differences in the difficulty of access and subsequent maintenance of the two flowmeters, but the requirements for safe and reliable work are completely consistent. [0003] At present, the urban gas pipeline network has adopted a large number of pipe valve products made of high-density polyethylene (PE), and the change of pipeline material has also put forward new requirements for access flow meters, because PE ...

AI Technical Summary

Problems solved by technology

In the construction of an intelligent gas pipeline network, it is essential to detect the flow, pressure, and temperature of the medium in the pipeline, but PE gas pipelines have extremely high requirements for leakage and explosion protection. The electrical wires are introduced through the pipe wall to prevent gas leakage, which brings difficulties to the continuous power supply and signal transmission of the built-in detection device

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