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A frequency-tunable sound wave generator

A technology of sound wave generation and jet cavity, which is applied in combustion product treatment, combustion method, lighting and heating equipment, etc., can solve problems such as mutual interference, inability to change the output frequency, and inability of sonic sootblowers to work, and achieve method implementation. Simple, simple process and compact system structure

Active Publication Date: 2019-09-13
NANJING CHANGRONG ACOUSTIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, once this structure is completed, it is fixed, and its output frequency cannot be changed during use.
Moreover, outputting multiple frequencies through a resonant cavity will cause mutual interference between various frequencies, resulting in the failure of the entire sonic sootblower to work in an optimal state

Method used

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  • A frequency-tunable sound wave generator
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  • A frequency-tunable sound wave generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 , is a schematic diagram of the structure of the frequency-tunable sound wave generating device provided in this embodiment, including a high-pressure air conduit 1, a jet chamber 2, a resonance chamber 3 and an air source 4; one end of the jet chamber 2 is provided with a jet chamber sealing end cover 21, and the other end A jet nozzle core 22 is provided, and there is a gap between the jet nozzle core 22 and the inner wall of the jet chamber 2 to form a jet nozzle 23; the high-pressure air conduit 1 passes through the sealing end cover 21 of the jet chamber and enters the interior of the jet chamber 2 and is connected to the jet nozzle core 22 The high-pressure air duct 1 inside the jet chamber 2 is provided with a through hole; one end of the resonance chamber 3 is open, and the other end is provided with a resonance chamber sealing end cover 31; Ensure that the gas ejected from the jet nozzle 23 enters the resonance chamber 3; inside the resonance c...

Embodiment 2

[0046] This embodiment is another improvement on the basis of Embodiment 1, such as figure 2 As shown, the slide plate 5 is connected with a reciprocating rod 7, and the reciprocating rod 7 passes through the sealed end cover 31 of the resonance cavity and then enters the cylinder 8 and is connected with the reciprocating plate 81 that can reciprocate along the axial direction of the cylinder 8; The source 4 is connected, and the valve 41 is arranged on the air pipe and controls the reciprocating plate 81 to perform reciprocating motion by controlling inflation and deflation.

[0047] In this embodiment, high-pressure air is passed into the high-pressure air conduit 1, and the high-pressure air enters the jet cavity 2 through the through hole on the high-pressure air conduit 1 inside the jet cavity 2, and the high-pressure air is compressed in the jet nozzle 5 after being collected in the jet cavity 2. After pressurization, it is sprayed into the resonance chamber 3, and the ...

Embodiment 3

[0049] This embodiment is a further improvement on the basis of Embodiment 1, as image 3 As shown, the trachea is provided with a first pressure transmitter 91 for detecting the size of the air pressure chamber 6, so that the generation of high-intensity sound waves can be controlled online; one end of the resonance chamber 3 is connected to the jet chamber 2 through a connecting piece, The integration and stabilization of the device is further realized. The jet nozzle core 22 is in the shape of a hemisphere, and the spherical surface of the hemisphere faces the inside of the jet cavity 2, so that the high-pressure air is uniformly discharged through the jet nozzle 23, which is easier to control and the resonance cavity 3 There is a limit device for limiting the sliding position of the slide plate 5 inside, which makes it easier to control the frequency of occurrence.

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Abstract

The invention discloses a tunable sound wave generation device which comprises a high-pressure air guide pipe, a jet cavity, a resonance cavity and an air source, wherein a jet cavity sealing end cover is arranged at one end of the jet cavity, and a jet nozzle core is arranged at the other end of the jet cavity; a gap is reserved between the jet nozzle core and the inner wall of the jet cavity to form a jet nozzle; the high-pressure air guide pipe penetrates through the jet cavity sealing end cover, enters the jet cavity and is connected with the jet nozzle core; a through hole is formed in the high-pressure air guide pipe in the jet cavity; one end of the resonance cavity is opened, and the other end of the resonance cavity is provided with a resonance cavity sealing end cover; the opened end of the resonance cavity faces the jet nozzle core; and a sliding plate is arranged in the resonance cavity, and can be controlled to move through an air pressure cavity or a reciprocating rod. The device provided by the invention can adjust and control the sound production frequency according to a requirement.

Description

technical field [0001] The invention relates to a frequency-adjustable sound wave generating device, in particular to an ash removal device used in thermal power, iron and steel and other related fields. Background technique [0002] With the increasingly stringent energy conservation and emission reduction standards, the energy conservation and emission reduction work of large thermal power units has been paid more and more attention. The boiler is the core equipment of the thermal power station and one of the key links in the energy conversion of the thermal power station. The thermal efficiency of the boiler directly affects the fuel utilization rate of the thermal power station. During the production and operation of coal-fired boilers, the problems of ash, coking, and scaling on the heating surfaces (water walls, superheaters, economizers, preheaters) and flue ducts have long plagued power production. An important factor for the thermal efficiency not reaching the desi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23J1/00F23J3/02
Inventor 夏瑞芳刘宇清张荣初孙卫国闻小明
Owner NANJING CHANGRONG ACOUSTIC INC
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