CN203202508U - Pipeline air exhausting sound eliminator for nuclear power station - Google Patents
Pipeline air exhausting sound eliminator for nuclear power station Download PDFInfo
- Publication number
- CN203202508U CN203202508U CN 201320130324 CN201320130324U CN203202508U CN 203202508 U CN203202508 U CN 203202508U CN 201320130324 CN201320130324 CN 201320130324 CN 201320130324 U CN201320130324 U CN 201320130324U CN 203202508 U CN203202508 U CN 203202508U
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- sound
- nuclear power
- power station
- air inlet
- silencer
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Abstract
The utility model relates to a pipeline air exhausting sound eliminator for a nuclear power station, and belongs to the technical field of sound eliminator manufacturing. The pipeline air exhausting sound eliminator comprises a sound eliminator cylinder body. An air inlet double-layer sleeve pipe is installed inside the sound eliminator cylinder body and located at the air inlet end, a plurality of first sound eliminating holes are formed in an inner pipe body of the air inlet double-layer sleeve pipe, a plurality of second sound eliminating holes are formed in an outer pipe body of the air inlet double-layer sleeve pipe, an air exhausting pipe is installed at the air outlet end of the sound eliminator cylinder body, one or more than one partition plate is arranged inside the sound eliminator cylinder body and between the air inlet double-layer sleeve pipe and the air exhausting pipe, and a plurality of inner inserting pipes are arranged on the partition plate in a penetrating mode. The pipeline air exhausting sound eliminator for the nuclear power station is an impedance composite sound eliminator with a multiple-expansion-chamber structure, the change of cross area is used for changing sound impedance and increasing sound transmission loss, meanwhile, the inserting pipes are arranged to eliminate passing frequency, the medium-high frequency sound absorbing characteristic of a dissipative sound absorbing material is combined, so that the frequency range of sound eliminating is expanded, and therefore the design requirements of a high sound eliminating quantity and a wide sound eliminating frequency range are met.
Description
Technical field
The utility model relates to a kind of used in nuclear power station pipeline exhaust silencer, belongs to the technical field that silencing apparatus is made.
Background technique
Owing to when high velocity air directly sprays from pipeline, can produce huge noise at nozzle, have a strong impact on workman's normal operation, also can cause to people's hearing certain infringement simultaneously.Usually the spout airspeed is larger in the vent systems, then exhaust injection noise is also larger, and noise frequency characteristic presents the wideband feature, basic, normal, high frequency range is high amplitude noise, under the condition that limits silencing apparatus boundary dimension, adopt traditional dissipative muffler or simple reactive muffler, its noise reduction can not reach the noise elimination target, especially dissipative muffler, the sound absorption characteristics of muffler material have determined that its noise elimination mainly concentrates on the medium-high frequency section, limited to the low-frequency noise sound deadening capacity, be difficult to realize the wideband acoustic characteristics.
The model utility content
For addressing the above problem, the utility model provides a kind of used in nuclear power station pipeline exhaust silencer that satisfies high sound deadening capacity, wide deadening frequency band.
For achieving the above object, the technological scheme that the utility model adopts is:
A kind of used in nuclear power station pipeline exhaust silencer comprises silencer cylinder; In the silencer cylinder and be positioned at the suction port end and the air inlet bilayer sleeve be installed (this air inlet bilayer sleeve is comprised of inner and outer tubes, and leave the gap between inner tube and the outer tube, be to be hollow type between inner tube and the outer tube), offer several sound attenuation holes one on the inner tube body of air inlet bilayer sleeve, offer several sound attenuation holes two on the outer tube body of air inlet bilayer sleeve; The air outlet end of silencer cylinder is equipped with outlet pipe; Silencer cylinder is interior and be provided with one or several dividing plates between air inlet bilayer sleeve and outlet pipe, is equipped with several interpolation pipes (interpolation pipe is air-flow path) on the dividing plate.
Further setting as such scheme, described sound attenuation hole one evenly is opened in the end (being that sound attenuation hole one evenly is opened in the inner tube body away from silencer cylinder suction port end) of inner tube body, and sound attenuation hole two evenly is opened near on the outer tube body of silencer cylinder suction port end.
The inner tube of described air inlet bilayer sleeve is stretched out to the silencer cylinder extension.
Described outlet pipe is by stretching out to the silencer cylinder extension in the silencer cylinder.
Interpolation pipe on the described dividing plate is pressed even circumferential and is arranged.
Described dividing plate is two, comprise the dividing plate one and the dividing plate two that set gradually along discharge directions, interpolation pipe one on the dividing plate one is pressed even circumferential and is arranged, interpolation pipe two on the dividing plate two is pressed even circumferential and is arranged, interpolation pipe one formed circumference and interpolation pipe two formed circumference are on same axis, and interpolation pipe one formed circumference is less than interpolation pipe two formed circumference.
The inwall of described silencer cylinder is provided with acoustical cotton.
Be provided with acoustical cotton on the described dividing plate.
The utility model used in nuclear power station pipeline exhaust silencer, the impedance complex formula silencing apparatus that belongs to more piece expansion chamber structure, this silencing apparatus comprises a plurality of expansion chamber structures altogether, utilize the variation of expansion chamber sectional area to change acoustic impedance, improve the sound transmission loss, and then the raising sound deadening capacity, the dividing plate between expansion chamber arranges interpolation pipe to eliminate by frequency simultaneously, widens frequency of noise elimination.For further improving the high frequency sound deadening capacity and reducing structure entrant sound phenomenon, at silencer cylinder and the additional sound-absorbing material of expansion chamber dividing plate, in conjunction with the intermediate frequency sound absorption characteristics of resistive sound-absorbing material, further widen the frequency range of sound absorption, thereby satisfy the designing requirement of high sound deadening capacity, wide deadening frequency band.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of used in nuclear power station pipeline of the utility model exhaust silencer comprises silencer cylinder 1, and the inwall of silencer cylinder 1 is provided with acoustical cotton 2.
In the silencer cylinder 1 and be positioned at the suction port end air inlet bilayer sleeve is installed, offer several sound attenuation holes 1 on inner tube 3 bodys of air inlet bilayer sleeve, offer several sound attenuation holes 26 on outer tube 5 bodys of air inlet bilayer sleeve.Sound attenuation hole 1 evenly is opened in the end of inner tube 3 bodys, and sound attenuation hole 26 evenly is opened near on outer tube 5 bodys of silencer cylinder 1 suction port end.Inner tube 3 front ends of air inlet bilayer sleeve stretch out to silencer cylinder 1 extension.The air inlet bilayer sleeve is weldingly fixed on by inner tube 3 on the inlet end wall body of silencer cylinder 1, the inlet end wall body welded seal of outer tube 5 one ends and silencer cylinder 1.
The air outlet end of silencer cylinder 1 is equipped with outlet pipe 7, and outlet pipe 7 stretches out to silencer cylinder 1 extension by silencer cylinder 1 is interior.
In the silencer cylinder 1 and between air inlet bilayer sleeve and outlet pipe 7, be provided with one or several dividing plates, be equipped with several interpolation pipes on the dividing plate.In the present embodiment, dividing plate is provided with two altogether, comprise the dividing plate 1 and the dividing plate 29 that set gradually along discharge directions, interpolation pipe 1 on the dividing plate 1 is pressed even circumferential and is arranged, interpolation pipe 2 11 on the dividing plate 29 is pressed even circumferential and is arranged, interpolation pipe one 10 formed circumference and interpolation pipe 2 11 formed circumference are on same axis, and interpolation pipe one 10 formed circumference are less than interpolation pipe 2 11 formed circumference.Interpolation pipe 1 is identical with the diameter of interpolation pipe 2 11.Dividing plate 1 and dividing plate 29 are divided into three expansion chamber with the chamber of silencer cylinder 1, comprise expansion chamber 1, expansion chamber 2 13, expansion chamber 3 14.Be provided with acoustical cotton 2 on dividing plate 1 and the dividing plate 29.
In the utility model, silencer cylinder 1 can be the multistage cylinder welding and forms, and forms different expansion chamber by welding diaphragm between every cylindrical section.
During the utility model work, its air flow path is: sound attenuation hole 26 → expansion chamber one 12 → interpolation pipe one 10 → expansion chamber 2 13 → interpolation pipe 2 11 → expansion chamber 3 14 → outlet pipe 7 of inner tube 3 → sound attenuation hole one 4 → outer tube 5 of air inlet bilayer sleeve.The air-flow of processing through eliminating the noise is finally discharged through outlet pipe 7.
During use, the utility model is installed on the exhaust duct, and installs on request being connected between outlet pipe and the silencing apparatus.After sound attenuation hole by the air inlet bilayer sleeve of Open valve, air-flow, expansion chamber, the interpolation pipe, change the linear motion of air-flow, cooperate sound-absorbing material to reach and to be discharged in designated space or other pipeline after certain noise elimination noise reduction is processed.
The utility model is not only applicable to nuclear power industry, can be applicable to the noise elimination of industry, the industry air conduit such as civilian yet.
Above-described embodiment only is used for explaining inventive concept of the present utility model, but not to the restriction of the utility model rights protection, allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should fall into protection domain of the present utility model.
Claims (8)
1. a used in nuclear power station pipeline exhaust silencer is characterized in that: comprise silencer cylinder; In the silencer cylinder and be positioned at the suction port end air inlet bilayer sleeve is installed, offer several sound attenuation holes one on the inner tube body of air inlet bilayer sleeve, offer several sound attenuation holes two on the outer tube body of air inlet bilayer sleeve; The air outlet end of silencer cylinder is equipped with outlet pipe; Silencer cylinder is interior and be provided with one or several dividing plates between air inlet bilayer sleeve and outlet pipe, is equipped with several interpolation pipes on the dividing plate.
2. a kind of used in nuclear power station pipeline exhaust silencer as claimed in claim 1, it is characterized in that: described sound attenuation hole one evenly is opened in the end of inner tube body, and sound attenuation hole two evenly is opened near on the outer tube body of silencer cylinder suction port end.
3. a kind of used in nuclear power station pipeline exhaust silencer as claimed in claim 2, it is characterized in that: the inner tube of described air inlet bilayer sleeve is stretched out to the silencer cylinder extension.
4. a kind of used in nuclear power station pipeline exhaust silencer as claimed in claim 1, it is characterized in that: described outlet pipe is by stretching out to the silencer cylinder extension in the silencer cylinder.
5. a kind of used in nuclear power station pipeline exhaust silencer as claimed in claim 1 is characterized in that: the interpolation pipe on the described dividing plate is pressed even circumferential and is arranged.
6. a kind of used in nuclear power station pipeline exhaust silencer as claimed in claim 5, it is characterized in that: described dividing plate is two, comprise the dividing plate one and the dividing plate two that set gradually along discharge directions, interpolation pipe one on the dividing plate one is pressed even circumferential and is arranged, interpolation pipe two on the dividing plate two is pressed even circumferential and is arranged, interpolation pipe one formed circumference and interpolation pipe two formed circumference are on same axis, and interpolation pipe one formed circumference is less than interpolation pipe two formed circumference.
7. a kind of used in nuclear power station pipeline exhaust silencer as claimed in claim 1, it is characterized in that: the inwall of described silencer cylinder is provided with acoustical cotton.
8. such as claim 1 or 7 described a kind of used in nuclear power station pipeline exhaust silencers, it is characterized in that: be provided with acoustical cotton on the described dividing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320130324 CN203202508U (en) | 2013-03-21 | 2013-03-21 | Pipeline air exhausting sound eliminator for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320130324 CN203202508U (en) | 2013-03-21 | 2013-03-21 | Pipeline air exhausting sound eliminator for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203202508U true CN203202508U (en) | 2013-09-18 |
Family
ID=49146616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320130324 Expired - Fee Related CN203202508U (en) | 2013-03-21 | 2013-03-21 | Pipeline air exhausting sound eliminator for nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203202508U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862202A (en) * | 2016-05-27 | 2016-08-17 | 苏州市丹纺纺织研发有限公司 | Denoising air yarn nozzle structure |
| CN105987252A (en) * | 2015-02-10 | 2016-10-05 | 厦门嘉达声学技术有限公司 | Compound exhausting emptying silencer |
| CN110067733A (en) * | 2019-05-31 | 2019-07-30 | 芜湖欧宝机电有限公司 | A kind of noise elimination structure and its sound reduction method of compressor |
-
2013
- 2013-03-21 CN CN 201320130324 patent/CN203202508U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987252A (en) * | 2015-02-10 | 2016-10-05 | 厦门嘉达声学技术有限公司 | Compound exhausting emptying silencer |
| CN105987252B (en) * | 2015-02-10 | 2018-03-09 | 厦门嘉达声学技术有限公司 | Composite exhaust air releasing silencer |
| CN105862202A (en) * | 2016-05-27 | 2016-08-17 | 苏州市丹纺纺织研发有限公司 | Denoising air yarn nozzle structure |
| CN105862202B (en) * | 2016-05-27 | 2018-12-28 | 苏州市丹纺纺织研发有限公司 | A kind of noise reduction air silk nozzle arrangements |
| CN110067733A (en) * | 2019-05-31 | 2019-07-30 | 芜湖欧宝机电有限公司 | A kind of noise elimination structure and its sound reduction method of compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 |