CN203310275U - Through-flow area adjustable dissipative silencer with absorbent plates - Google Patents
Through-flow area adjustable dissipative silencer with absorbent plates Download PDFInfo
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- CN203310275U CN203310275U CN2013202944155U CN201320294415U CN203310275U CN 203310275 U CN203310275 U CN 203310275U CN 2013202944155 U CN2013202944155 U CN 2013202944155U CN 201320294415 U CN201320294415 U CN 201320294415U CN 203310275 U CN203310275 U CN 203310275U
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- movable
- muffler body
- flow area
- deflector
- guide
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Abstract
The utility model discloses a through-flow area adjustable dissipative silencer with absorbent plates. The through-flow area adjustable dissipative silencer comprises a plurality of silencing units, wherein each silencing unit comprises a fixed silencing body, a rectangular cavity, a movable silencing body, two rotating shafts, two fixed arc guide plates, two movable arc guide plates and a driver, wherein the rectangular cavity is defined by a back plate, an upper cover plate and a lower cover plate; the fixed silencing body is fixed in the cavity; the back plate is provided with a plurality of guide shafts which are vertical to the back plate and pass through the fixed silencing body; the movable silencing body is provided with guide sleeves matched with the guide shafts and can slide along the guide shafts by means of the guide sleeves; the two rotating shafts are respectively arranged at the front ends and rear ends of the cover plates and are parallel to the guide shafts; and the driver can be used for driving the movable silencing body to move along the guide shafts. The through-flow area of the silencer with the structure can be adjusted, namely that the thickness of each fin and the distance between every two fins can be determined according to the annual average temperature, so that a draught fan with proper power can be selected.
Description
Technical field
The utility model relates to a kind of ventilation silencer, particularly a kind ofly is applicable to fire power plant cooling tower air intake and air-discharge silencer.
Background technology
Along with the raising of environmental requirement, for reducing the impact of strong noise equipment on surrounding enviroment, General Requirements is arranged silencer at the air inlet that advances exhaust blower and air outlet place, excessive to intercept noise.Strip-type silencer is generally used in the improvement of blower fan intake and exhaust noise, and its sound deadening capacity (insertion loss) is generally carried out according to GB12348-2008 " Industrial Enterprise Factory Boundary ambient noise discharge standard ".According to the control criterion at this standard daytime and night, generally differ 10 dB(A).In design generally with night standard design.Performance to silencer mainly contains two indexs: its insertion loss of the first (sound deadening capacity), it two is windages.General requirement is that sound deadening capacity is wanted greatly, and windage is little simultaneously.But these two indexs are contradiction sometimes.If require the little flow area of silencer of certainly will wanting of windage, want large.Also just require the sheet spacing of strip-type silencer to want large, and the increase of sheet spacing will certainly affect sound deadening capacity.
And we know, high if sound deadening capacity requires, the sheet of strip-type silencer is thick will increase, and the spacing between anechoic sheet will be little.The sheet spacing is little just means that the passage section of silencer is just little, and the size of passage section and the aerodynamic quality of silencer have relation.
The computing formula of blower fan air intake drag losses is as follows:
As shown in following formula: square being directly proportional of the windage of silencer and flow velocity.Passage section is little, and the windage of silencer will increase, and will reduce air quantity.Guaranteeing that identical air quantity just must strengthen power of fan.
And the windage of silencer for cooling tower can directly affect the leaving water temperature of cooling water, windage greatly air intake is few, especially summer high-temperature season, more require to have enough air quantity, general power of fan must be selected blower fan according to worse operating mode thus, certainly will increase power of fan like this, namely will select high-power blower, cause energy consumption to increase.In fact, the time of annual high temperature season can be not oversize, and after selecting high-power blower, the energy consumption that will make At All Other Times in every year wastes.
Traditional method has following shortcoming:
1, passage section immobilizes, and is difficult to adapt to the different noise limit values of day and night, and high temperature and the generally requirement of temperature to blower fan.
2, fixedly silencer can only according to evening noise limit value and high temperature season cooling require to be configured high-power blower.Cause the waste of the energy.
The utility model content
For the technical problem of above-mentioned existence, the utility model provides a kind of flow area adjustable strip-type silencer, the size that can regulate its flow area.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
The adjustable strip-type silencer of a kind of flow area, comprise some muffling units; Described muffling unit comprises fixedly muffler body, described fixedly muffler body comprises the cuboid surrounded by orifice plate, in described cuboid, be filled with sound-absorbing material, it is characterized in that: described muffling unit also comprises the cavity that is surrounded rectangle by backboard, a upper and lower cover plates, and fixedly muffler body is fixed in cavity; On backboard, be provided with some perpendicular to backboard and run through the fixedly axis of guide of muffler body; Also comprise a movable muffler body, described movable muffler body comprises the cuboid surrounded by orifice plate, is filled with sound-absorbing material in described cuboid; On movable muffler body, be furnished with the fairlead coordinated with the axis of guide, movable muffler body can rely on fairlead to slide along the axis of guide; Also comprise the two piece rotating shafts parallel with the axis of guide of cover plate rear and front end, the fixedly deflector of two arcs and the movable deflector of two arcs are set respectively; Described rotating shaft two ends are fixed with upper and lower cover plates respectively; One side of described fixedly deflector is fixed in rotating shaft, and another side is fixed on fixedly on muffler body; Movable deflector is set in rotating shaft on one side and axle center rotation around the shaft, and its another side is connected with movable muffler body; Also comprise a driver can driving activity muffler body moved along the axis of guide.
As a kind of improvement, comprise at least two noise reduction unit of installing side by side, two movable sound-absorptive objects of described two noise reduction unit are adjacent; Described driver comprises power set, drive rod, two connecting rods; Described drive rod one end is connected with power set, the other end and two rod hinge connections; Described two connecting rods are hinged with two movable muffler bodies respectively.Utilize power set can drive two movable muffler bodies, save the energy, reduce costs.
As above-mentioned improved a kind of preferably, described power set are a kind of in hydraulic jack, compression cylinder, motor.
Preferred as another kind, described fixedly deflector and movable deflector cross section are 1/4 ellipse.Such shape windage minimum.
As another kind, improve, the edge of described movable muffler body is provided with baffle plate, side contacts in one side of described movable deflector and baffle plate; In described rotating shaft, be set with torque spring, two of described torque spring turn round arm and with fixing deflector, contact with movable deflector respectively.Utilize the tension force of torque spring, make movable deflector be fitted in all the time on movable muffling unit.
As another kind, improve, also comprise an attemperating unit be connected with driver.Utilize temperature control system to connect driver, can be according to the temperature position of control activity muffler body automatically, thus the size of automatically regulating flow area.
Usefulness of the present utility model is:
Silencer with said structure, can regulate its flow area, namely according to annual mean temperature determine the sheet of silencer thick with the sheet spacing, so just can select the blower fan of appropriate power.When temperature season, when coolant water temperature is too high, can change the passage section of silencer, namely by the control system romote-controlled driving device, movable muffler body is moved inwards.Increase passage section, reduce windage, increase air quantity to meet the requirement of cooling.If adopt temperature control system can realize air quantity and the cooling water water temperature dynamically controlled.
With fixing silencer, compare, but the outstanding advantage of flow area adjustment sheet formula silencer is exactly energy-conservation.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Mark in figure: 1 cover plate, 2 fixedly muffler body, 3 backboards, 4 movable muffler bodies, 5 rotating shafts, 6 fixedly deflector, 7 movable deflectors, 8 baffle plates, 9 torque springs, 10 are turned round arm, 11 fairleads, 12 axis of guides, 13 drive rods, 14 connecting rods, 15 power set.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1:
The some muffling units of the utility model; Described muffling unit comprises fixedly muffler body 2, described fixedly muffler body 2 comprises the cuboid surrounded by orifice plate, in described cuboid, be filled with sound-absorbing material, it is characterized in that: described muffling unit also comprises the cavity that is surrounded rectangle by a backboard 3, upper and lower cover plates 1, and fixedly muffler body 2 is fixed in cavity; On backboard 3, be provided with some perpendicular to backboard 3 and run through the fixedly axis of guide 12 of muffler body 2; Also comprise a movable muffler body 4, described movable muffler body 4 comprises the cuboid surrounded by orifice plate, is filled with sound-absorbing material in described cuboid; On movable muffler body 4, be furnished with the fairlead 11 coordinated with the axis of guide 12, movable muffler body 4 can rely on fairlead 11 to slide along the axis of guide 12; Also comprise cover plate 1 rear and front end two piece rotating shafts parallel with the axis of guide 11 5, the fixedly deflector 6 of two arcs and the movable deflector 7 of two arcs are set respectively; Described rotating shaft 5 two ends are fixing with upper and lower cover plates 1 respectively; One side of described fixedly deflector 6 is fixed in rotating shaft 5, and another side is fixed on fixedly on muffler body 2; Movable deflector 7 is set in rotating shaft 5 on one side and 5 axle center rotations around the shaft, and its another side is connected with movable muffler body 4; Also comprise a driver can driving activity muffler body 4 moved along the axis of guide 12.
This silencer preferably includes at least two noise reduction unit of installing side by side, and two movable sound-absorptive objects 4 of described two noise reduction unit are adjacent; Described driver comprises power set 15, drive rod 13, two connecting rods 14; Described drive rod 13 1 ends are connected with power set 15, and the other end and two connecting rods 14 are hinged; Described two connecting rods 14 are hinged with two movable muffler bodies 4 respectively.Power set 15 can be in hydraulic jack, compression cylinder, motor a kind of.
Fixedly deflector 6 and movable deflector 7 cross sections are preferably 1/4 ellipse.
The edge of movable muffler body 4 is provided with baffle plate 8, one side of described movable deflector 7 and the interior side contacts of baffle plate 8; In described rotating shaft 5, be set with torque spring 9, two of described torque spring 9 turn round arm 10 and with fixing deflector 6, contact with movable deflector 7 respectively.
Also comprise an attemperating unit be connected with driver.
When using, can when needing to increase circulation area, can past fixedly muffler body 2 directions of driving activity muffler body 4 draw close according to the adjustment circulation area, make the volume of muffling unit reduce, circulation area increases.Otherwise, when need to reduce circulation area, can driving activity muffler body 4 toward away from fixedly muffler body 2 directions motions, make the volume increase of muffling unit, circulation area reduces.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. the adjustable strip-type silencer of flow area, comprise some muffling units; Described muffling unit comprises fixedly muffler body, described fixedly muffler body comprises the cuboid surrounded by orifice plate, in described cuboid, be filled with sound-absorbing material, it is characterized in that: described muffling unit also comprises the cavity that is surrounded rectangle by backboard, a upper and lower cover plates, and fixedly muffler body is fixed in cavity; On backboard, be provided with some perpendicular to backboard and run through the fixedly axis of guide of muffler body; Also comprise a movable muffler body, described movable muffler body comprises the cuboid surrounded by orifice plate, is filled with sound-absorbing material in described cuboid; On movable muffler body, be furnished with the fairlead coordinated with the axis of guide, movable muffler body can rely on fairlead to slide along the axis of guide; Also comprise the two piece rotating shafts parallel with the axis of guide of cover plate rear and front end, the fixedly deflector of two arcs and the movable deflector of two arcs are set respectively; Described rotating shaft two ends are fixed with upper and lower cover plates respectively; One side of described fixedly deflector is fixed in rotating shaft, and another side is fixed on fixedly on muffler body; Movable deflector is set in rotating shaft on one side and axle center rotation around the shaft, and its another side is connected with movable muffler body; Also comprise a driver can driving activity muffler body moved along the axis of guide.
2. the adjustable strip-type silencer of a kind of flow area according to claim 1 is characterized in that: comprise at least two noise reduction unit of installing side by side, two movable sound-absorptive objects of described two noise reduction unit are adjacent; Described driver comprises power set, drive rod, two connecting rods; Described drive rod one end is connected with power set, the other end and two rod hinge connections; Described two connecting rods are hinged with two movable muffler bodies respectively.
3. according to claim 2 kind of adjustable strip-type silencer of flow area is characterized in that: described power set are a kind of in hydraulic jack, compression cylinder, motor.
4. the adjustable strip-type silencer of a kind of flow area according to claim 1, it is characterized in that: described fixedly deflector and movable deflector cross section are 1/4 ellipse.
5. the adjustable strip-type silencer of a kind of flow area according to claim 1, it is characterized in that: the edge of described movable muffler body is provided with baffle plate, side contacts in one side of described movable deflector and baffle plate; In described rotating shaft, be set with torque spring, two of described torque spring turn round arm and with fixing deflector, contact with movable deflector respectively.
6. the adjustable strip-type silencer of a kind of flow area according to claim 1, is characterized in that: also comprise an attemperating unit be connected with driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202944155U CN203310275U (en) | 2013-05-27 | 2013-05-27 | Through-flow area adjustable dissipative silencer with absorbent plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202944155U CN203310275U (en) | 2013-05-27 | 2013-05-27 | Through-flow area adjustable dissipative silencer with absorbent plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203310275U true CN203310275U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202944155U Expired - Lifetime CN203310275U (en) | 2013-05-27 | 2013-05-27 | Through-flow area adjustable dissipative silencer with absorbent plates |
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| CN (1) | CN203310275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256830A (en) * | 2013-05-27 | 2013-08-21 | 四川正升声学科技有限公司 | Sheet type silencer with adjustable through-flow area |
-
2013
- 2013-05-27 CN CN2013202944155U patent/CN203310275U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256830A (en) * | 2013-05-27 | 2013-08-21 | 四川正升声学科技有限公司 | Sheet type silencer with adjustable through-flow area |
| CN103256830B (en) * | 2013-05-27 | 2015-02-04 | 四川正升声学科技有限公司 | Sheet type silencer with adjustable through-flow area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Wenjiang District 611130 of Sichuan city of Chengdu province Chengdu Strait science and Technology Industry Development Park Haike Road West No. 57 Patentee after: Positive ascension environment Polytron Technologies Inc Address before: 611130, No. 388, Taiwan Avenue, Wenjiang Strait science and Technology Park, Sichuan, Chengdu Patentee before: Sichuan Zhengsheng Acoustic Technology Co., Ltd. |
|
| CP03 | Change of name, title or address |