CN201747645U - Fan bypass structure - Google Patents
Fan bypass structure Download PDFInfo
- Publication number
- CN201747645U CN201747645U CN2010201335739U CN201020133573U CN201747645U CN 201747645 U CN201747645 U CN 201747645U CN 2010201335739 U CN2010201335739 U CN 2010201335739U CN 201020133573 U CN201020133573 U CN 201020133573U CN 201747645 U CN201747645 U CN 201747645U
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- CN
- China
- Prior art keywords
- blower fan
- fan
- flue
- door
- bypass
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a fan bypass structure, which comprises a fan (M), and a fan bypass flue shutoff door (3). A fan air-inlet isolating door (1) is installed at one end of the fan (M), and a fan air-outlet isolating door (2) is installed at the other end of the fan (M); the fan bypass flue shutoff door (3) is connected with the fan air-inlet isolating door (1), the fan (M) and the fan air-outlet isolating door (2) in parallel; one end of the fan bypass flue shutoff door (3) is connected with a fan air-inlet flue (4), and the other end of the fan bypass flue shutoff door (3) is connected with a fan air-outlet flue (5). The fan bypass structure overcomes the shortcomings that the system energy consumption is large and the maintenance is inconvenient caused by that the single fan can not be used under low system resistance. The fan bypass structure has advantages that: the energy consumption is reduced; the running way of the system can be changed; and the stability of the system is ensured.
Description
Technical field
The utility model relates to the blower fan bypass structure that the flue gas system in a kind of flue gas desulphurization system uses.
Background technique
The most of power source of China obtains by combustion of fossil fuels.The fossil fuel source is unstable, and quality is also unstable, and general sulphur content is higher, and difference is bigger.In combustion process, can produce a large amount of sulfur dioxide.Contaminated air, and also be the main inducing of acid rain, so harm is bigger.For removing the sulfur dioxide that produces in the combustion of fossil fuel process, generally adopt flue gas desulfurization technique.Connect flue because of in the flue gas system of boiler, increasing flue gas desulfur device and drawing, so bigger to the drag effects of flue gas system.Generally need newly-increased blower fan to overcome owing to increasing the resistance that desulfurizer produces.Blower fan can overcome flue gas resistance under in working order, flue gas system is boosted, but the crushing of blower fan own is bigger under the stoppage in transit situation.When not needing newly-increased blower fan supercharging, or when not using induced draught fan, preferably will increase blower fan or induced draught fan short circuit newly with newly-increased blower fan.Only utilize a typhoon machine just can overcome system resistance.When on-bne repair one typhoon machine, also need to increase bypass blower fan is isolated in addition.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned existing disadvantages of background technology part, and a kind of blower fan bypass structure is provided.The blower fan bypass just can well address the above problem.
The purpose of this utility model reaches by following measure: the blower fan bypass structure, it comprises blower fan, end at blower fan is equipped with blower fan air intake isolating door, the other end at blower fan is equipped with blower fan air-out isolating door, it is characterized in that it also comprises blower fan bypass flue shutoff door with the blower fan air intake isolating door of connecting, blower fan, the parallel connection of blower fan air-out isolating door, one end of described blower fan bypass flue shutoff door is connected with blower fan air intake flue, and the other end of blower fan bypass flue shutoff door is connected with blower fan air-out flue.
In technique scheme, on described blower fan air intake flue and the blower fan bypass flue flue support is arranged.
In technique scheme, described blower fan has two to five, and described blower fan adopts parallel form to connect.
In technique scheme, described blower fan has two to five, and described blower fan adopts the series connection form to connect.
1., capable of reducing energy consumption the utility model blower fan bypass structure has following advantage:.In two blower fan trains, when system resistance hour, can make a typhoon machine move another typhoon machine and stop transport.Need not two typhoon machines are all moved, thereby cut down the consumption of energy.2., change system operation mode.When two blower fan series operation, two blower fans can not start simultaneously, the little bypass of a typhoon machine can be opened, and start another typhoon machine.After blower fan stable operation, restart the stoppage in transit blower fan, can avoid fan stall or breathe heavily the shake equivalent risk.3., guarantee the stability of system.In blower fan series connection or parallel system, the stoppage in transit blower fan is isolated, can when not stopping transport system, overhaul the stoppage in transit blower fan, guarantee the stability of system.
Description of drawings
Fig. 1 is the structural representation of the utility model blower fan bypass structure series connection.
Fig. 2 is the structural representation of the utility model blower fan bypass structure state in parallel.
Fig. 3 is the blower fan bypass structure schematic representation of the utility model separate unit blower fan.
Fig. 4 is the A-A cut-away view of Fig. 3.
Fig. 5 is the B-B cut-away view of Fig. 3.
1. blower fan air intake isolating doors among the figure, 2. blower fan air-out isolating door, 3. blower fan bypass flue shutoff door, 4. blower fan air intake flue, 5. blower fan air-out flue, 6. flue support, M. blower fan, 7. bypass flue.
Embodiment
Describe performance of the present utility model in detail below in conjunction with accompanying drawing, but they do not constitute to qualification of the present utility model, only do for example.Simultaneously by illustrating that advantage of the present utility model will become clear more and understanding easily.
Consult accompanying drawing as can be known: the utility model blower fan bypass structure, it comprises blower fan M, end at blower fan M is equipped with blower fan air intake isolating door 1, the other end at blower fan M is equipped with blower fan air-out isolating door 2, it is characterized in that it also comprises blower fan bypass flue shutoff door 3 with the blower fan air intake isolating door 1 of connecting, blower fan M, 2 parallel connections of blower fan air-out isolating door, one end of described blower fan bypass flue shutoff door 3 is connected with blower fan air intake flue 4, and the other end of blower fan bypass flue shutoff door 3 is connected with blower fan air-out flue 5.On blower fan air intake flue 4 and blower fan bypass 7 flues flue support 6 is arranged, bypass flue 7 can overhaul flue support 6 by blower fan and support (as Fig. 3, Fig. 4, shown in Figure 5).
Blower fan M has two to five (the concrete installation quantity of blower fan can increase and decrease according to calculating), and described blower fan M adopts parallel form to connect (as shown in Figure 2).Blower fan M has two to five (the concrete installation quantity of blower fan can increase and decrease according to calculating), and described blower fan M adopts the series connection form to connect (as shown in Figure 1).When series connection of two blower fans or parallel connection, when a typhoon machine moves another typhoon machine stoppage in transit.For reducing to stop transport blower fan resistance or when the stoppage in transit blower fan isolated, prior art can't realize.Increase blower fan bypass flue, blower fan can be isolated or reduce system resistance.Can guarantee to overhaul environment when overhauling in addition.
The blower fan bypass can be isolated blower fan, and air or flue gas can be carried by the bypass flue when isolating.The bypass flue structure generally is made up of flue and three baffle doors.The bypass channel structure of forming blower fan.Two are used for isolating (being isolating door) in three baffle doors, and one is used for turn-offing (being shutoff door).When needs use blower fan, will turn-off baffle door and close, the partitions door is opened, and blower fan gets final product work, for system provides voltage rise.When not using blower fan, close isolating door, open shutoff door, air or flue gas can directly not flow away from the bypass flue by blower fan.Generally two isolating doors and a shutoff door can be interlocked, when isolating door is opened, turn-off shutoff door.When opening, opens shutoff door isolating door.Not when blower fan is worked, all doors all to be opened, like this may the output short-circuit cycle, cause the blower fan speed per hour or breathe heavily shake.
Claims (4)
1. blower fan bypass structure, it comprises blower fan (M), end at blower fan (M) is equipped with blower fan air intake isolating door (1), the other end at blower fan (M) is equipped with blower fan air-out isolating door (2), it is characterized in that it also comprises and the blower fan air intake isolating door (1) of connecting, blower fan (M), blower fan air-out isolating door (2) blower fan bypass flue (7) shutoff door (3) in parallel, one end of described blower fan bypass flue shutoff door (3) is connected with blower fan air intake flue (4), and the other end of blower fan bypass flue shutoff door (3) is connected with blower fan air-out flue (5).
2. blower fan bypass structure according to claim 1 is characterized in that on described blower fan air intake flue (4) and the blower fan bypass flue (7) flue support (6) being arranged.
3. blower fan bypass structure according to claim 1 is characterized in that described blower fan (M) has two to five, and described blower fan (M) adopts parallel form to connect.
4. blower fan bypass structure according to claim 1 is characterized in that described blower fan (M) has two to five, and described blower fan (M) adopts the series connection form to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201335739U CN201747645U (en) | 2010-03-16 | 2010-03-16 | Fan bypass structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201335739U CN201747645U (en) | 2010-03-16 | 2010-03-16 | Fan bypass structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747645U true CN201747645U (en) | 2011-02-16 |
Family
ID=43582324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201335739U Expired - Fee Related CN201747645U (en) | 2010-03-16 | 2010-03-16 | Fan bypass structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747645U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186067A (en) * | 2019-05-08 | 2019-08-30 | 国网浙江省电力有限公司电力科学研究院 | A kind of cigarette air duct coupled system preventing fan stall |
-
2010
- 2010-03-16 CN CN2010201335739U patent/CN201747645U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186067A (en) * | 2019-05-08 | 2019-08-30 | 国网浙江省电力有限公司电力科学研究院 | A kind of cigarette air duct coupled system preventing fan stall |
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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 |
Granted publication date: 20110216 Termination date: 20150316 |
|
| EXPY | Termination of patent right or utility model |