Mechanically-driven continuous impact type pressure wave generator and pipeline abnormal state detection device based on same

Abstract

The invention discloses a mechanically-driven continuous impact type pressure wave generator and a pipeline abnormal state detection device based on the same, and belongs to the technical field of pipeline detection. The device is reasonable in structural design and good in overall centering performance, a plunger, a plunger rod, a plunger rod connector and a piston sleeve are located on the same axis, running is stable, and the service life of the device is long. The plunger can rapidly impact a diaphragm along with rectilinear motion of the plunger rod in the piston sleeve under driving of spring force and a motor, pulse type pressure fluctuation is generated through deformation of the diaphragm, and then the pulse type pressure fluctuation is spread along a pipeline. The diaphragm isolates fluid flowing in the pipeline from gas in the piston sleeve, and a better sealing function is still achieved under very high pressure. A novel structural mode that the motor provides mechanical energy and a spring and a flywheel accumulate energy is adopted, so that whole equipment can generate continuous pressure waves; the whole device is positioned through a body fixing frame, the space of the device is compact, carrying is convenient, operation is easy, and high man-machine friendliness is achieved; and the structure is simple, sealing performance is good, and running is stable.

Description

Technical field[0001]The present invention belongs to the field of pipeline detection, and is related to a mechanically driven continuous impact pressure wave generator and a conduit abnormal state detecting device based on its.Background technique[0002]During the industrial process of petrochemical, energy, chemical, metallurgy, medicine, water treatment, etc., the trace of pressure waves may appear in the industrial pipeline system and the fluid flow in the main equipment. The transfer of pressure fluctuations is reflected in the process of carrying energy and propagation information, so there are many applications with pressure wave generators. As the carrier of transmitting information, the pressure wave can be used in the conduit abnormal state including leakage, clogging, abnormal branches, pipe diameter abnormal evaluation. The safety hazards that are abnormal of pipelines and indirect economic benefits will have a serious impact on people's lives and property safety.[0003]At...

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Problems solved by technology

[0004] In summary, the above-mentioned pressure wave generators have different design starting points and are suitable for their own design purposes. However, for the evaluation and detection of abnormal pipeline conditions, they are also not suitable for liquid working fluid environments, and the pressure wave signal strength generated is not large. There is leakage in the device itself, or technical problems such as uncontrollable continuous pressure wave excitation frequency

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