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Pipeline silencing device capable of recovering noise energy

A noise reduction device and noise energy technology, applied in circuit devices, battery circuit devices, tube components, etc., to achieve good low-frequency noise reduction effects, high-voltage electrical stability, good mechanical strength and toughness

Active Publication Date: 2017-10-13
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the limitations of the prior art in low-frequency pipeline noise control while realizing the recovery of noise energy, and to provide a pipeline noise reduction device capable of recovering noise energy

Method used

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  • Pipeline silencing device capable of recovering noise energy
  • Pipeline silencing device capable of recovering noise energy
  • Pipeline silencing device capable of recovering noise energy

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Experimental program
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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in more detail:

[0024] Such as figure 1 As shown, the present invention is a muffler device capable of recovering pipeline noise energy, including a muffler housing and an energy harvesting module. The muffler shell includes the inlet and outlet outer pipe flanges 1 bonded to both ends of the connecting pipe 2, and the upper and lower expansion sound chambers 3 connected by bolts. The structure is shown in figure 2 . The energy collection module is composed of PVDF piezoelectric film 4, lead interface 8, pressure plate 9, short bolts 10, pretensioning device (11-13), rectifier circuit board 6 and energy storage capacitor 7. The left end of the PVDF film 4 is fastened to the cut surface on the left side of the connecting pipe by the pressure plate 9, and the right end is pre-tightened by the pre-tightening bolt 11, and the film is pre-tightened by the slider 12 ...

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Abstract

The invention aims at providing a pipeline silencing device capable of recovering noise energy. The pipeline silencing device comprises a silencing shell and an energy collection module. The silencing shell comprises an inlet flange connector, an outlet flange connector, a connection pipe and expansion sound cavities. The energy collection module comprises a PVDF piezoelectric film, a pressing plate, short bolts, a lead interface, a pre-tightening device, a rectification circuit board and an energy storage capacitor. For upstream incident pipeline sound waves, on the one hand, the purpose of reflecting noise is achieved through coupling between the silencing shell and the PVDF piezoelectric film, and on the other hand, by means of the piezoelectric effect of the PVDF piezoelectric film, a certain charge quantity is generated during vibration and is output to the rectification circuit board and the energy storage capacitor through the lead interface, and accordingly the function of recovering energy is achieved. The pipeline silencing device has the beneficial effects of being simple in structure, high in reliability and applicability and the like. The pipeline silencing device has remarkable beneficial effects on the aspect of pipeline low-frequency noise control, and the defect that a traditional passive silencing device is not good in the low-frequency control effect is remedied.

Description

technical field [0001] The invention belongs to the technical field of low-frequency pipeline noise control, and relates to a pipeline muffler with energy recovery function. Background technique [0002] As a channel for transporting substances and a medium for information transmission, pipelines are widely used in various engineering occasions such as air conditioning and ventilation, vehicle and ship engine intake and exhaust, gas turbines, etc. Pipeline noise has become an important aspect of noise control in related systems. For example, in the field of automobile industry technology, pipelines Noise has gradually attracted the attention of technicians. With the vigorous development of my country's automobile industry, while automobiles bring great convenience to people's travel, the strong noise they produce brings new troubles to drivers and passengers. Studies have shown that: car noise not only affects the comfort of drivers and passengers, but also easily causes ps...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/033H02J7/32H02N2/18H02J7/34
CPCF16L55/0338H02J7/32H02J7/345H02N2/18
Inventor 杜敬涛刘杨王铭睿杨铁军朱明刚
Owner HARBIN ENG UNIV
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