CN105826071A - Sound insulation device applicable to power capacitor - Google Patents
Sound insulation device applicable to power capacitor Download PDFInfo
- Publication number
- CN105826071A CN105826071A CN201610361552.4A CN201610361552A CN105826071A CN 105826071 A CN105826071 A CN 105826071A CN 201610361552 A CN201610361552 A CN 201610361552A CN 105826071 A CN105826071 A CN 105826071A
- Authority
- CN
- China
- Prior art keywords
- blimp
- shell
- power capacitor
- sound insulation
- sound arrester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/10—Housing; Encapsulation
Abstract
The invention discloses a sound insulation device applicable to a power capacitor. The power capacitor comprises a shell top, a shell body, and a shell bottom. The sound insulation device comprises a top sound insulation cover, a bottom sound insulation cover, a noise reduction material, and sealing rings. The top sound insulation cover covers the shell top and part of the shell body connected with the shell top. The bottom sound insulation cover covers the shell bottom and part of the shell body connected with the shell bottom. The top sound insulation cover and the bottom sound insulation cover are each provided with a cavity, and the noise reduction material fills the cavities of the top sound insulation cover and the bottom sound insulation cover. Casings of the power capacitor pass through the top sound insulation cover. The sealing rings are used for sealing the gaps between the casings and the top sound insulation cover.
Description
Technical field
The present invention relates to high-tension electricity noise of equipment control field, particularly relate to a kind of sound arrester being applicable to power capacitor.
Background technology
The noise of capacitor is owing to capacitor is under action of alternative electric field, the pole plate making capacitor is produced vibration by alternating electric field power effect, pass to shell by connected structure and capacitor impregnant, cause the vibration of capacitor case to produce noise and to ambient radiation.In DC transmission engineering, alternating current filter and DC filter are all based on double-tuned, and the noise frequency produced during capacitor actual motion is the most relevant with the frequency of two kinds of harmonic waves.As for the DC filter capacitors of N1 time and N2 two kinds of harmonic waves, its main noise frequency is: 50N1,50N2,100N1,100N2,50 (N1-N2) and 50 (N1+N2) Hz totally 6 frequencies.For N1 the ac filter capacitor with N2 two kinds of harmonic waves, its main noise frequency is: 100,100N1,100N2,50 (N1-1), 50 (N1+1), 50 (N2-1), 50 (N2+1), 50 (N1-N2) and 50 (N1+N2) totally 9 frequencies.
At present, noise abatement for current conversion station power capacitor is mainly passed through to increase acoustic barrier near Capacitor stack, sound insulating material typically is provided with porous material characteristic, has reduction vibration, the function of absorption of noise, can effectively reflect and the noise of absorption capacitor generation.But screening arrangement generally there are following shortcoming: 1. owing to capacitor pylon is high, acoustic barrier area is big, and construction costs is high；2. use barrier-type sound insulation waste material, use the sound insulation of capacitor packaging type then to affect heat radiation.
Summary of the invention
In order to make up the deficiencies in the prior art, the present invention provides a kind of sound arrester being applicable to power capacitor.
Its technical scheme is as follows:
A kind of sound arrester being applicable to power capacitor, described power capacitor includes sleeve pipe, cap, at the bottom of housing and shell, and described sound arrester includes top blimp, bottom blimp, acoustic damping materials and sealing ring, described top blimp is covered in described cap and housing described with the part that described cap is connected, described bottom blimp be covered at the bottom of described shell and with the described housing of part being connected at the bottom of described shell, described top blimp and described bottom blimp are equipped with inner chamber, described acoustic damping materials are filled in the inner chamber of described top blimp and described bottom blimp, the sleeve pipe of described power capacitor passes described top blimp, described sealing ring is for sealing the gap between described sleeve pipe and described top blimp.
Described top blimp is provided with two collar aperture, and described collar aperture coordinates with described shell clearance, is sealed by described sealing ring between described sleeve pipe and described collar aperture.
The material of described top blimp and described bottom blimp is the one in rustless steel, aluminum and plastic cement.
Described acoustic damping materials include one or more combinations in aluminum fiberboard, aluminum microperforated panel and rock wool.
Described sealing ring uses elastomeric material.
The height of described top blimp and/or described bottom blimp is about the 1/5 of described power capacitor height.
The Advantageous Effects of the present invention is as follows:
Take into full account self structure characteristic and the operating mode of power capacitor, realize optimal noise reduction with minimum cost, perfect heat-dissipating, easy for installation；
Simple and compact for structure, service life is long, safe and reliable；
Save acoustic damping materials.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the power capacitor of one embodiment of the invention；
Fig. 2 is the amplitude-versus-frequency curve of the A weighting acoustical power of one embodiment of the invention；
Fig. 3 is six areal acceleration amplitude-versus-frequency curves of one embodiment of the invention；
Fig. 4 is the sound arrester schematic diagram being arranged on power capacitor of one embodiment of the invention；
Fig. 5 is profile before and after the top blimp of one embodiment of the invention or bottom blimp；
Fig. 6 is top blimp or the left and right profile of bottom blimp of one embodiment of the invention；
Fig. 7 is the top view of the top blimp of one embodiment of the invention；
In figure, 1-sleeve pipe；2-cap；3-housing；At the bottom of 4-shell；5-sealing ring；6-top blimp；Blimp bottom 7-；8-acoustic damping materials, 9-collar aperture.
Detailed description of the invention
Below with reference to the drawings and specific embodiments, the present invention is further explained.
Seeing Fig. 1, power capacitor includes at the bottom of sleeve pipe 1, cap 2, housing 3 and shell 4, and housing 3 connects at the bottom of cap 2 and shell 4, and two sleeve pipes 1 are located on cap 2, as terminals.
See Fig. 2, power capacitor is carried out single frequency excitation, test the amplitude-versus-frequency curve of its A weighting acoustical power, described A weighting acoustical power is that the sound heard using human ear is as judgment criteria, acoustical power when low-frequency range 0～350Hz and high band are more than 1300Hz is less than 50dB, therefore the noise that this power capacitor produces when low-frequency range or high band need not take noise reduction measure, and the noise produced at Mid Frequency during the work of this power capacitor, then need in the selection of corresponding noise reduction measure, especially acoustic damping materials.
See Fig. 3, to power capacitor single frequency excitation, the acceleration in six faces of test power capacitor, test result shows, the vibration velocity of 4 at the bottom of cap 2 and shell is much larger than remaining four face, illustrate that the noise of power capacitor is mainly derived from the noise of 4 at the bottom of cap 2 and shell, and the sound arrester of the present invention is based on what this point designed.
See Fig. 4, sound arrester is arranged on power capacitor, sound arrester includes top blimp 6, bottom blimp 7, acoustic damping materials 8 and sealing ring 5, top blimp 6 is covered in cap 2 and the partial shell 3 being connected with cap 2, bottom blimp 7 is covered at the bottom of shell 4 and the partial shell 3 being connected with at the bottom of shell 4, top blimp 6 and bottom blimp 7 are equipped with inner chamber, acoustic damping materials 8 are filled in the inner chamber of top blimp 6 and bottom blimp 7, the sleeve pipe 1 of power capacitor is through top blimp 6, sealing ring 5 is for sealing the gap between sleeve pipe 1 and top blimp 6；
Top blimp 6 is provided with two collar aperture 9, collar aperture 9 and sleeve pipe 1 matched in clearance, is sealed by sealing ring 5 between sleeve pipe 1 and collar aperture 9.
The material of top blimp 6 and bottom blimp 7 is the one in rustless steel, aluminum and plastic cement；
Acoustic damping materials 8 include one or more combinations in aluminum fiberboard, aluminum microperforated panel and rock wool；
Sealing ring 5 uses elastomeric material；
The height of top blimp 6 and/or bottom blimp 7 is about the 1/5 of power capacitor height.
Seeing cross section view before and after Fig. 5, top blimp 6 or bottom blimp 7 is an alternative embodiment, and top blimp 6 or bottom blimp 7 are provided with inner chamber 8, and inner chamber 8 is used for filling acoustic damping materials.
Seeing Fig. 6, the left and right profile of top blimp or bottom blimp is an alternative embodiment, and top blimp or bottom blimp are provided with inner chamber, and acoustic damping materials 8 are filled in inner chamber.
See Fig. 7, the top view of top blimp 6 is an alternative embodiment, top blimp 6 is provided with two collar aperture 9, two sleeve pipes 1 of power capacitor are through two collar aperture 9 of top blimp 6, along two collar aperture 9 center line connecting directions, top blimp 6 is divided into two parts, the when of installation, two parts is welded.
The above; being only the present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the change that can readily occur in or replacement, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with scope of the claims.
Claims (6)
1. the sound arrester being applicable to power capacitor, described power capacitor includes sleeve pipe, cap, at the bottom of housing and shell, and described sound arrester is characterised by: include top blimp, bottom blimp, acoustic damping materials and sealing ring, described top blimp is covered in described cap and housing described with the part that described cap is connected, described bottom blimp be covered at the bottom of described shell and with the described housing of part being connected at the bottom of described shell, described top blimp and described bottom blimp are equipped with inner chamber, described acoustic damping materials are filled in the inner chamber of described top blimp and described bottom blimp, the sleeve pipe of described power capacitor passes described top blimp, described sealing ring is for sealing the gap between described sleeve pipe and described top blimp.
Sound arrester the most according to claim 1, it is characterised in that: described top blimp is provided with two collar aperture, and described collar aperture coordinates with described shell clearance, is sealed by described sealing ring between described sleeve pipe and described collar aperture.
Sound arrester the most according to claim 1, it is characterised in that: the material of described top blimp and described bottom blimp be rustless steel, aluminum and nonmetal in one.
Sound arrester the most according to claim 1, it is characterised in that: described acoustic damping materials include one or more combinations in aluminum fiberboard, microperforated panel and rock wool.
Sound arrester the most according to claim 1, it is characterised in that: described sealing ring uses elastomeric material.
Sound arrester the most according to claim 1, it is characterised in that: the height of described top blimp and/or described bottom blimp is the 1/5 of described power capacitor height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610361552.4A CN105826071A (en) | 2016-05-26 | 2016-05-26 | Sound insulation device applicable to power capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610361552.4A CN105826071A (en) | 2016-05-26 | 2016-05-26 | Sound insulation device applicable to power capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105826071A true CN105826071A (en) | 2016-08-03 |
Family
ID=56532424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610361552.4A Pending CN105826071A (en) | 2016-05-26 | 2016-05-26 | Sound insulation device applicable to power capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105826071A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315016A (en) * | 2011-07-08 | 2012-01-11 | 日新电机（无锡）有限公司 | Power capacitor possessing noise shield device |
| CN204857460U (en) * | 2015-08-26 | 2015-12-09 | 中国电力工程顾问集团中南电力设计院有限公司 | Device of making an uproar falls in damping sound insulation sleeve for power capacitor |
| CN205194509U (en) * | 2015-11-03 | 2016-04-27 | 武汉市宏森环保技术工程有限责任公司 | A foraminiferous damping sound insulation sleeve for power capacitor |
| CN205789503U (en) * | 2016-05-26 | 2016-12-07 | 上海思源电力电容器有限公司 | A kind of sound arrester being applicable to power capacitor |
-
2016
- 2016-05-26 CN CN201610361552.4A patent/CN105826071A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315016A (en) * | 2011-07-08 | 2012-01-11 | 日新电机（无锡）有限公司 | Power capacitor possessing noise shield device |
| CN204857460U (en) * | 2015-08-26 | 2015-12-09 | 中国电力工程顾问集团中南电力设计院有限公司 | Device of making an uproar falls in damping sound insulation sleeve for power capacitor |
| CN205194509U (en) * | 2015-11-03 | 2016-04-27 | 武汉市宏森环保技术工程有限责任公司 | A foraminiferous damping sound insulation sleeve for power capacitor |
| CN205789503U (en) * | 2016-05-26 | 2016-12-07 | 上海思源电力电容器有限公司 | A kind of sound arrester being applicable to power capacitor |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160803 |
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| RJ01 | Rejection of invention patent application after publication |