CN212029578U - Warm air silencing device at inlet of power station fan - Google Patents
Warm air silencing device at inlet of power station fan Download PDFInfo
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- CN212029578U CN212029578U CN202020476632.6U CN202020476632U CN212029578U CN 212029578 U CN212029578 U CN 212029578U CN 202020476632 U CN202020476632 U CN 202020476632U CN 212029578 U CN212029578 U CN 212029578U
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- 230000030279 gene silencing Effects 0.000 title description 17
- 230000008030 elimination Effects 0.000 claims abstract description 25
- 238000003379 elimination reaction Methods 0.000 claims abstract description 25
- 230000003584 silencer Effects 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000013016 damping Methods 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 60
- 230000006872 improvement Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model discloses a warm air noise eliminator at the inlet of a power station fan, which comprises a warm air noise eliminator (1), a warm air device heat source inlet pipe (4) and a warm air device cold source outlet pipe (5); wherein, the entrance intercommunication of this power station fan (7) has fan inlet pipeline (6), the exit intercommunication has fan outlet pipeline (8), this warm braw noise eliminator (1) is installed inside fan inlet pipeline (6) of power station fan (7), including noise elimination layer (2) and warm braw layer (3) that link together, the warm braw ware tube bank has been arranged in warm braw layer (3), warm braw layer (3) entry intercommunication has warm braw ware heat source inlet tube (4), the export intercommunication has warm braw ware cold source outlet pipe (5). The utility model discloses warm braw noise eliminator designs as an organic whole, and the integration is arranged, saves space, arranges the compactness, has the function of fan heater and silencer concurrently, and both complement each other simultaneously, and the fan heater finned tube can have noise elimination concurrently, and the silencer also can reduce the running noise of fan heater.
Description
Technical Field
The utility model belongs to the technical field of electric power and power engineering, concretely relates to power station fan entry warm braw noise eliminator.
Background
Power plant fans are important auxiliary equipment of thermal power plants, and noise generated during operation of the fans often becomes a source of accidents affecting the health of workers and interfering with the environment. Aerodynamic noise radiated by the air inlet of the power station fan is a main factor for environmental pollution, and one of main objects for controlling noise pollution in industrial departments in China. At present, a silencer is designed at a fan inlet of a power station fan, and silencing materials are arranged in the silencer and generally divided into a straight pipe type, a sheet type, a folded plate type, a honeycomb type, an acoustic flow type, a labyrinth type, an elbow type and the like according to different airflow channel structures.
The power station air heater is a heat exchanger which heats air at the inlet of an air preheater by using low-pressure steam extraction of a steam turbine. The air heater is typically mounted between the blower outlet and the air preheater inlet. The air heater can raise the temperature of air entering the air preheater and raise the wall temperature of the air preheater, so as to prevent low temperature corrosion.
In order to prevent the problem of large resistance of the air preheater, the comprehensive cold end temperature of the air preheater is improved, and the air heater is additionally arranged for modification. In winter, the temperature of the air is increased after the air is heated by the air heater, so that the comprehensive cold end temperature of the air preheater is increased, and the problems of low-temperature corrosion and large resistance of the air preheater are solved. Because the air heater is additionally installed for subsequent transformation, the problems of unreasonable arrangement, large system resistance and large running noise exist.
Therefore, it is desirable to provide a heater and silencer assembly with relatively simple structure, reasonable design, and good operation effect, which is convenient for popularization in production.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve above-mentioned problem, provide a power station fan entry warm braw noise eliminator, the device has the function of fan heater and silencer concurrently.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
a warm air silencing device at an inlet of a power station fan comprises a warm air silencing device, a warm air device heat source inlet pipe and a warm air device cold source outlet pipe; wherein, this power station fan's entrance intercommunication has fan inlet pipeline, and the exit intercommunication has fan outlet pipeline, and this warm braw noise eliminator installs inside the fan inlet pipeline of power station fan, including the noise elimination layer and the warm braw layer that link together, has arranged the fan heater tube bank in the warm braw layer, and warm braw layer entry intercommunication has fan heater heat source inlet pipe, and the exit intercommunication has fan heater cold source outlet pipe.
The utility model discloses a further improvement lies in, has arranged noise elimination material in the noise elimination layer.
The utility model discloses further improvement lies in, and noise elimination layer and warm braw layer individual layer are arranged, and perhaps the multilayer is arranged, when adopting the multilayer to arrange, has arranged the one deck warm braw layer between the two-layer noise elimination layer, and perhaps the warm braw layer has arranged the multilayer.
The utility model discloses a further improvement lies in, and the noise elimination layer is arranged towards the outside of fan entry pipeline.
The utility model discloses further improvement lies in, and warm braw noise eliminator arranges the vertical pipe section at fan inlet pipeline, perhaps arranges the horizontal pipe section.
The utility model discloses further improvement lies in that the power plant fan is power plant primary air fan or power plant forced draught blower.
The utility model discloses further improvement lies in that the power station fan is centrifugal fan or axial fan.
The utility model discloses at least, following profitable technological effect has:
the warm air noise eliminator is arranged on an inlet pipeline of the fan of the power station and consists of a noise elimination layer and a warm air layer, and the warm air layer and the noise elimination layer can be arranged in a single layer or in multiple layers. The air current firstly passes through the noise elimination layer, and the noise of the fan inlet pipeline, the fan body and the warm air layer is weakened. The air flow passes through the warm air layer, and after passing through the warm air layer, the air is heated, the temperature is increased, the comprehensive cold end temperature of the air preheater can be increased, and the low-temperature corrosion of the air preheater is effectively relieved. The warm air layer tube bundle can adopt finned tubes, and the fins have a surrounding tube bundle structure and can play a certain role in noise elimination.
The utility model discloses a warm braw noise eliminator designs as an organic whole, and the integration is arranged, saves space, arranges the compactness, has the function of fan heater and silencer concurrently, and both complement each other simultaneously, and the fan heater finned tube can have noise elimination concurrently, and the silencer also can reduce the running noise of fan heater.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a partial schematic view of the muffling layer and the warm air layer of the present invention;
fig. 3 is a partial schematic view of the noise elimination layer and the warm air layer of the present invention.
Description of reference numerals:
1-a warm air noise eliminator; 2-a sound-deadening layer; 3-warm air layer; 4-a heater heat source inlet pipe; 5-outlet pipe of cold source of air heater; 6-a fan inlet duct; 7-power station fans; 8-fan outlet pipeline.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Referring to fig. 1 to 3, the utility model provides a power station fan inlet warm air muffler device, which comprises a warm air muffler device 1, a warm air device heat source inlet pipe 4 and a warm air device cold source outlet pipe 5; wherein, this power station fan 7's entrance intercommunication has fan inlet pipeline 6, and the exit intercommunication has fan outlet pipeline 8, and this warm braw noise eliminator 1 is installed inside fan inlet pipeline 6 of power station fan 7, including the noise elimination layer 2 and the warm braw layer 3 that link together, has arranged the warm braw ware tube bank in the warm braw layer 3, and 3 entry intercommunications on warm braw layer have warm braw ware heat source inlet tubes 4, and the export intercommunication has warm braw ware cold source outlet pipe 5.
Preferably, the sound attenuation layer 2 and the warm air layer 3 can be arranged in a single layer or in multiple layers.
Preferably, a sound-damping material is arranged inside the sound-damping layer 2. Resistive silencing material, resistive silencing material and resistive composite silencing material may be used.
Preferably, a heater pipe bundle is arranged in the hot air layer 3, a finned pipe can be adopted, an inlet of the hot air layer 3 is communicated with a heater heat source inlet pipe 4, and an outlet of the hot air layer 3 is communicated with a heater cold source outlet pipe 5.
Preferably, the warm air noise eliminator 1 can be arranged in a vertical pipe section of the fan inlet pipeline 6 and can also be arranged in a horizontal pipe section of the fan inlet pipeline 6.
Preferably, the plant fan 7 may be a plant primary fan or a plant blower.
Preferably, the plant fan 7 may be a centrifugal fan or an axial fan.
The utility model discloses a concrete working process does:
in the present embodiment, the warm air muffler device 1 is attached to the power station fan inlet duct 6. The warm air noise elimination device 1 is arranged on the fan inlet pipeline 6, the warm air noise elimination device 1 is composed of a noise elimination layer 2 and a warm air layer 3, and the warm air layer 3 and the noise elimination layer 2 can be arranged in a single layer or in multiple layers. The single-layer arrangement of the warm air layer 3 and the sound attenuation layer 2 is shown in fig. 2, and the multi-layer arrangement of the warm air layer 3 and the sound attenuation layer 2 is shown in fig. 3.
The air flow firstly passes through the silencing layer 2, silencing materials are arranged in the silencing layer 2, the silencing materials can be resistance silencing materials, resistance silencing materials and impedance composite silencing materials, and the silencing layer 2 can weaken the noise of the fan inlet pipeline 6, the fan body and the warm air layer. The air current back through warm braw layer 3, 3 behind the warm braw layer, the air is heated, and the temperature risees, can improve air heater and synthesize cold junction temperature, effectively alleviates air heater low temperature corrosion. The warm air layer tube bundle can adopt finned tubes, and the fins have a surrounding tube bundle structure and can play a certain role in noise elimination.
The heat source of the air heater enters the air heater from a heat source inlet pipe 4 of the air heater, the heat source can be hot water or steam, and after heat exchange with cold air in the air heater, the heat is discharged out of the air heater from a cold source outlet pipe 5 of the air heater, and the discharging form is generally hydrophobic.
When the warm braw ware noise eliminator 1 arranges for warm braw layer 3 and noise elimination layer 2 multilayer, arranges one deck warm braw layer 3 between two-layer noise elimination layer 2, can better eliminate the noise of warm braw ware, and 3 multilayer of warm braw layer arrange simultaneously, heat the cold air step by step, and the cold air is heated more evenly, and the effect is better.
The warm air silencing device 1 is designed integrally, is arranged integrally, saves space, is compact in arrangement, has the functions of a warm air device and a silencer, and can be used for complementing each other, the finned tube of the warm air device can have the silencing effect, and the silencer can also reduce the running noise of the warm air device.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
Claims (7)
1. A warm air noise eliminator at an inlet of a fan of a power station is characterized by comprising a warm air noise eliminator (1), a warm air device heat source inlet pipe (4) and a warm air device cold source outlet pipe (5); wherein,
the entrance intercommunication of this power station fan (7) has fan inlet pipeline (6), the exit intercommunication has fan outlet pipeline (8), this warm braw noise eliminator (1) is installed inside fan inlet pipeline (6) of power station fan (7), including noise elimination layer (2) and warm braw layer (3) that link together, the warm braw ware tube bank has been arranged in warm braw layer (3), warm braw layer (3) entry intercommunication has warm braw ware heat source inlet tube (4), the export intercommunication has warm braw ware cold source outlet pipe (5).
2. The plant fan inlet warm air noise-abatement device of claim 1, characterized in that a noise-abatement material is arranged within the noise-abatement layer (2).
3. The utility model discloses a power plant fan entry warm air noise eliminator of claim 1, characterized in that, noise elimination layer (2) and warm air layer (3) are arranged with the individual layer, or the multilayer is arranged, and when adopting multilayer arrangement, arrange one layer of warm air layer (3) between two noise elimination layers (2), or warm air layer (3) have arranged the multilayer.
4. The plant fan inlet warm air sound damping arrangement according to claim 1, characterised in that the sound damping layer (2) is arranged towards the outside of the fan inlet duct (6).
5. The utility fan inlet warm air silencer according to claim 1, characterized in that the warm air silencer (1) is arranged in a vertical pipe section or in a horizontal pipe section of the fan inlet duct (6).
6. The utility fan inlet warm air silencer according to claim 1, characterized in that the utility fan (7) is a utility primary fan or a utility blower.
7. The utility fan inlet warm air noise-abatement device of claim 1, characterized in that the utility fan (7) is a centrifugal fan or an axial fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020476632.6U CN212029578U (en) | 2020-04-03 | 2020-04-03 | Warm air silencing device at inlet of power station fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020476632.6U CN212029578U (en) | 2020-04-03 | 2020-04-03 | Warm air silencing device at inlet of power station fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212029578U true CN212029578U (en) | 2020-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020476632.6U Active CN212029578U (en) | 2020-04-03 | 2020-04-03 | Warm air silencing device at inlet of power station fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212029578U (en) |
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2020
- 2020-04-03 CN CN202020476632.6U patent/CN212029578U/en active Active
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