CN203660372U - Exhaust air and noise reducing structure of power grid switching station - Google Patents
Exhaust air and noise reducing structure of power grid switching station Download PDFInfo
- Publication number
- CN203660372U CN203660372U CN201420051261.1U CN201420051261U CN203660372U CN 203660372 U CN203660372 U CN 203660372U CN 201420051261 U CN201420051261 U CN 201420051261U CN 203660372 U CN203660372 U CN 203660372U
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- shrouding
- seal plate
- reducing structure
- ventilating fan
- noise
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- 229920000742 Cotton Polymers 0.000 claims abstract description 16
- 230000030279 gene silencing Effects 0.000 claims abstract description 14
- 230000007704 transition Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model discloses an exhaust air and noise reducing structure of a power grid switching station. The structure comprises a wall of the switching station, wherein the wall is provided with an exhaust port, an exhaust fan is mounted in the exhaust port, a noise reducing structure which is arranged at the exhaust side of the exhaust fan comprises a front seal plate, a back seal plate, a left seal plate, a right seal plate and an exhaust grid, the exhaust fan, the front seal plate, the back seal plate, the left seal plate, the right seal plate and the exhaust grid form a closed space, the inner walls of the front seal plate, the back seal plate, the left seal plate and the right seal plate are all provided with a noise reducing cotton layer which is in an integrated structure, the front seal plate is arranged as a '7' shaped structure, and belts of the front seal plate are connected in a circular arc transition. The noise reducing structure which is designed according to the size of the exhaust fan is mounted at the exhaust port of the exhaust fan and is in a '7' shape, the noise reducing cotton layers are added on the inner wall of a pipe, and by virtue of the principle of sound refraction, most sound is absorbed in the pipe wall, so that the effect of silencing and noise reducing is met.
Description
Technical field
The utility model relates to noise-reducing structure, has related in particular to the air draft noise-reducing structure at a kind of power network switch station.
Background technology
Existing 10 kilovolts of switchyards are made up of some ring main units, mostly be placed in cement power distribution room or box wooden switchyard, when having ring main unit in 10 kilovolts of switchyards and normally moving " drone " sound when ventilating fan is opened in sound and station, because residential neighborhoods is closed in switchyard geographical position mostly, the noise of switchyard may disturb the normal life of surrounding resident.A sound when ventilating fan normally moves is 50-60 decibel, sound when ring main unit normally moves is 10-20 decibel, and in switchyard, ventilating fan number is at least more than two, so comparatively speaking, in switchyard, noise is mainly derived from the unlatching of ventilating fan, if ventilating fan long-time running, do not add in time lubricant, also can cause rotating shaft dry, sound when now ventilating fan is opened is up to 55-75 decibel, so the sound of ventilating fan is the source of noise.
Along with increase year by year and the passing of running time of 10 kilovolts of switchyard quantity, in 10 kilovolts of switchyards, ventilating fan damage and aging quantity get more and more, hidden danger accounting in annual rectification is also more and more higher, visible ventilating fan spoilage increases year by year, cause ventilating fan noise problem more and more serious, the type of ventilating fan fault is mainly divided into ventilating fan and damages, dry or the foreign matter of rolling bearing is fallen in ventilating fan etc., because ventilating fan needs often to open, ventilating fan air-out mouth inner and outer side only has two-layer steel wire touch-proof guard, inside is cement or steel plate structure, without any noise reduction or the measure of resistance sound, long-term unlatching causes ventilating fan to damage or rolling bearing is dried, part ventilating fan top is without the measure of covering, easily fall into dust or foreign matter, only have the staff of working as to find or user feedback in tour process, ventilating fan hidden danger just can be rectified and improved, in this process, ventilating fan noise problem exists always, affect larger.
Summary of the invention
The utility model, for shortcoming of the prior art, provides the air draft noise-reducing structure at a kind of power network switch station.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
The air draft noise-reducing structure at a kind of power network switch station, comprise the switchyard wall that is provided with exhaust outlet, ventilating fan is installed in exhaust outlet, ventilating fan air side is provided with noise-reducing structure, noise-reducing structure comprises front shrouding, rear shrouding, left shrouding, right shrouding, Air outlet net, ventilating fan, front shrouding, rear shrouding, left shrouding, right shrouding and Air outlet net form closed space, front shrouding, rear shrouding, left shrouding, right shrouding inwall are respectively equipped with silencing cotton layer, silencing cotton layer is structure as a whole, front shrouding is made as " 7 " type structure, and bending place arc transition connects.Noise-reducing structure is according to the size design of ventilating fan, and outer formation " 7 " font, is arranged on ventilating fan air outlet, encloses silencing cotton layer at inner-walls of duct, by the refraction principle of sound, most of sound is absorbed in tube wall, thereby reaches the effect of sound-deadening and noise-reducing.
As preferably, rear shrouding is located at exhaust outlet downside, and left shrouding, right shrouding are located at the exhaust outlet left and right sides, and front shrouding is located at exhaust outlet upside and front side, and front shrouding, rear shrouding, left shrouding, right shrouding are structure as a whole.Integrative-structure does not have gap, can by sound loss outside, can not reveal sound.
As preferably, front shrouding is provided with edge, and edge and wall are fixed.Edge is vertical with front shrouding, parallel with wall, by edge, directly front shrouding is buckled in to ventilating fan outside, fixes by bolt and wall.
As preferably, edge width is not less than 40mm.Edge is provided with screw, on corresponding wall, is also equipped with screw, and edge is fixed through bolt and wall.
As preferably, Air outlet net is set to steel wire guard.The mesh of steel wire guard is not very large, can stop that the foreign material such as leaf branch enter in ventilating fan, and Air outlet net is also an air outlet of ventilating fan wind direction circulation.
As preferably, silencing cotton layer inwall length and width size is not less than ventilating fan length and width size.Noise-reducing structure is larger than ventilating fan, is convenient to the absorption of noise.
As preferably, ventilating fan connects temperature and humidity controller, and temperature and humidity controller starts the break-make of fan switches circuit by temperature sensor, moisture signal.Temperature and humidity controller carries out respectively upper and lower limit setting and demonstration to temperature, humidity, thereby can, according to field condition, automatically start fan or heater, and actual temperature, the humidity of test environment are regulated automatically.Ventilating fan has connected temperature and humidity controller, temperature and humidity controller can directly be controlled the operation of ventilating fan according to the humiture in switchyard, having solved 10 kilovolts of switchyard ventilating fans can not be by the problem of actual demand start and stop, greatly reduce the invalid opening time of ventilating fan, extended the useful life of ventilating fan.
The utility model, owing to having adopted above technical scheme, has significant technique effect:
Noise-reducing structure of the present utility model is according to the size design of ventilating fan, and outer formation " 7 " font, is arranged on ventilating fan air outlet, enclose silencing cotton layer at inner-walls of duct, by the refraction principle of sound, most of sound is absorbed in tube wall, thereby reach the effect of sound-deadening and noise-reducing.
Accompanying drawing explanation
Fig. 1 is overall structure end view of the present utility model;
Fig. 2 is front view of the present utility model.
The toponym that in accompanying drawing, each number designation refers to is as follows: 1-wall, 2-ventilating fan, 3-front shrouding, 4-front shrouding, 5-left shrouding, 6-right shrouding, 7-Air outlet net, 8-silencing cotton layer, 9-edge.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Embodiment 1
The air draft noise-reducing structure at a kind of power network switch station, as shown in Figure 1, comprise the switchyard wall 1 that is provided with exhaust outlet 11, ventilating fan 2 is installed in exhaust outlet, ventilating fan 2 air sides are provided with noise-reducing structure, noise-reducing structure comprises front shrouding 3, rear shrouding 4, left shrouding 5, right shrouding 6, Air outlet net 7, ventilating fan 2, front shrouding 3, rear shrouding 4, left shrouding 5, right shrouding 6 and Air outlet net 7 form closed space, front shrouding 3, rear shrouding 4, left shrouding 5, right shrouding 6 inwalls are respectively equipped with silencing cotton layer 8, silencing cotton layer 8 inner surface can be set to waveform or zigzag along air draft direction, improve acoustically effective, silencing cotton layer 8 can also further be set to integrative-structure, front shrouding 3 is made as " 7 " type structure, bending place arc transition connects, and ventilating fan 2 connects temperature and humidity controller, and temperature and humidity controller starts the break-make of fan switches circuit by temperature sensor, moisture signal.Temperature and humidity controller carries out respectively upper and lower limit setting and demonstration to temperature, humidity, thereby can be according to field condition, automatically start fan or heater, actual temperature, humidity to test environment regulate automatically, having solved 10 kilovolts of switchyard ventilating fans 2 can not be by the problem of actual demand start and stop, greatly reduce the invalid opening time of ventilating fan, extended the useful life of ventilating fan 2.
Rear shrouding 4 is located at exhaust outlet downside, and left shrouding 5, right shrouding 6 are located at the exhaust outlet left and right sides, and front shrouding 3 is located at exhaust outlet upside and front side, and front shrouding 3, rear shrouding 4, left shrouding 5, right shrouding 6 are structure as a whole.
Silencing cotton layer 8 inwall size are not less than ventilating fan 2 sizes.Front shrouding 3 is provided with edge 9, and edge 9 is fixing with wall 1.
Principle: before the utility model, shrouding 3 is made as " 7 " type structure, bending place adopts rounding off to connect.Noise-reducing structure is according to the size design of ventilating fan 2, and outer formation " 7 " font, is arranged on ventilating fan 2 air outlets, encloses silencing cotton layer 8 at inner-walls of duct, by the refraction principle of sound, most of sound is absorbed in tube wall, thereby reaches the effect of sound-deadening and noise-reducing.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (7)
1. the air draft noise-reducing structure at a power network switch station, comprise the switchyard wall (1) that is provided with exhaust outlet, ventilating fan (2) is installed in exhaust outlet, it is characterized in that: ventilating fan (2) air side is provided with noise-reducing structure, noise-reducing structure comprises front shrouding (3), rear shrouding (4), left shrouding (5), right shrouding (6), Air outlet net (7), ventilating fan (2), front shrouding (3), rear shrouding (4), left shrouding (5), right shrouding (6) and Air outlet net (7) form closed space, front shrouding (3), rear shrouding (4), left shrouding (5), right shrouding (6) inwall is respectively equipped with silencing cotton layer (8), silencing cotton layer (8) is structure as a whole, front shrouding (3) is made as " 7 " type structure, bending place arc transition connects.
2. the air draft noise-reducing structure at a kind of power network switch according to claim 1 station, it is characterized in that: rear shrouding (4) is located at exhaust outlet downside, left shrouding (5), right shrouding (6) are located at the exhaust outlet left and right sides, front shrouding (3) is located at exhaust outlet upside and front side, and front shrouding (3), rear shrouding (4), left shrouding (5), right shrouding (6) are structure as a whole.
3. the air draft noise-reducing structure at a kind of power network switch according to claim 1 station, is characterized in that: front shrouding (3) is provided with edge (9), and edge (9) are fixing with wall (1).
4. the air draft noise-reducing structure at a kind of power network switch according to claim 3 station, is characterized in that: edge (9) width is not less than 40mm.
5. the air draft noise-reducing structure at a kind of power network switch according to claim 1 station, is characterized in that: Air outlet net (7) is steel wire guard.
6. the air draft noise-reducing structure at a kind of power network switch according to claim 1 station, is characterized in that: silencing cotton layer (8) inwall length and width size is not less than ventilating fan (2) length and width size.
7. the air draft noise-reducing structure at a kind of power network switch according to claim 1 station, is characterized in that: ventilating fan (2) connects temperature and humidity controller, and temperature and humidity controller starts the break-make of fan switches circuit by temperature sensor, moisture signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420051261.1U CN203660372U (en) | 2014-01-26 | 2014-01-26 | Exhaust air and noise reducing structure of power grid switching station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420051261.1U CN203660372U (en) | 2014-01-26 | 2014-01-26 | Exhaust air and noise reducing structure of power grid switching station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203660372U true CN203660372U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420051261.1U Expired - Lifetime CN203660372U (en) | 2014-01-26 | 2014-01-26 | Exhaust air and noise reducing structure of power grid switching station |
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| Country | Link |
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| CN (1) | CN203660372U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134945A (en) * | 2014-07-22 | 2014-11-05 | 国家电网公司 | Exhaust silencing device of power grid switch station and installation thereof |
| CN104201583A (en) * | 2014-08-06 | 2014-12-10 | 国家电网公司 | Air exhaust silencing device for telescopic power grid switching station |
| CN105762677A (en) * | 2016-03-23 | 2016-07-13 | 江苏亚威变压器有限公司 | Three-phase high-impedance high-voltage silicon rectifying apparatus |
| CN107204182A (en) * | 2017-07-06 | 2017-09-26 | 江苏华强新能源科技有限公司 | A kind of Novel muffler |
-
2014
- 2014-01-26 CN CN201420051261.1U patent/CN203660372U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134945A (en) * | 2014-07-22 | 2014-11-05 | 国家电网公司 | Exhaust silencing device of power grid switch station and installation thereof |
| CN104201583A (en) * | 2014-08-06 | 2014-12-10 | 国家电网公司 | Air exhaust silencing device for telescopic power grid switching station |
| CN104201583B (en) * | 2014-08-06 | 2017-04-12 | 国家电网公司 | Air exhaust silencing device for telescopic power grid switching station |
| CN105762677A (en) * | 2016-03-23 | 2016-07-13 | 江苏亚威变压器有限公司 | Three-phase high-impedance high-voltage silicon rectifying apparatus |
| CN107204182A (en) * | 2017-07-06 | 2017-09-26 | 江苏华强新能源科技有限公司 | A kind of Novel muffler |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |