CN206609301U - A kind of heating furnace induced-draft fan protection device - Google Patents
A kind of heating furnace induced-draft fan protection device Download PDFInfo
- Publication number
- CN206609301U CN206609301U CN201720097758.0U CN201720097758U CN206609301U CN 206609301 U CN206609301 U CN 206609301U CN 201720097758 U CN201720097758 U CN 201720097758U CN 206609301 U CN206609301 U CN 206609301U
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- China
- Prior art keywords
- induced
- draft fan
- inlet duct
- connecting pipe
- heating furnace
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Abstract
A kind of heating furnace induced-draft fan protection device includes：Induced-draft fan inlet duct, induced-draft fan connecting pipe, smoke exhaust fan, induced-draft fan outlet conduit and communicating pipe, induced-draft fan inlet duct is connected with induced-draft fan connecting pipe, induced-draft fan connecting pipe is connected with smoke exhaust fan, induced-draft fan connecting pipe is connected with induced-draft fan outlet conduit, communicating pipe two ends be connected respectively with induced-draft fan inlet duct and induced-draft fan outlet conduit.Wherein, communicating pipe is provided with valve positioner and flow control valve, and valve positioner is connected with flow control valve.The utility model can avoid blower fan from being worked in surge area, prevent detonation risk compared with conventional art.
Description
Technical field
The utility model is related to induced-draft fan field, and in particular to a kind of heating furnace induced-draft fan protection device.
Background technology
Recuperative heater can heat steel billet by the use of low-heat value gas such as blast furnace gases as fuel, reach saving energy
Source, reduces the purpose of steel rolling cost, is widely used in steel plant.
The flue gas that recuperative heater burning is produced generally all is to be discharged after collecting through heat-accumulating burner by smoke exhaust fan
Outside factory building, due to more containing impurity such as dust in blast furnace gas, it can be blocked after burner regenerative chamber long-term use, smoke evacuation resistance
Power is significantly increased, and in order to ensure that smoke evacuation is smooth, would generally increase certain surplus during induced-draft fan type selecting, but this can increase Smoke
Machine surge area.In actual production process, heating furnace production capacity can change with the production of rolling line, particularly in rolling line roll change
Deng during, heating furnace heating demand demand is low, and exhaust smoke level is small, and smoke exhaust fan easily enters surge region, now induced-draft fan
Vibration is very big, influences equipment life.
Therefore, in order to solve the above problems, a series of researchs have been carried out.
Utility model content
The purpose of this utility model is there is provided a kind of heating furnace induced-draft fan protection device, to overcome prior art to be deposited
Disadvantages mentioned above and deficiency.
A kind of heating furnace induced-draft fan protection device, it is characterised in that including：Induced-draft fan inlet duct, induced-draft fan connecting tube
Road, smoke exhaust fan, induced-draft fan outlet conduit and communicating pipe, the induced-draft fan inlet duct are connected with induced-draft fan connecting pipe, institute
State induced-draft fan connecting pipe to be connected with smoke exhaust fan, the induced-draft fan connecting pipe is connected with induced-draft fan outlet conduit, the company
Siphunculus two ends are connected with induced-draft fan inlet duct and induced-draft fan outlet conduit respectively；
Wherein, the communicating pipe is provided with valve positioner and flow control valve, the valve positioner and Flow-rate adjustment
Valve is connected.
Further, the induced-draft fan inlet duct is provided with thermocouple, and the thermocouple is connected with valve positioner circuit.
Further, the induced-draft fan outlet conduit is provided with wind speed apparatus for measuring air quantity, the wind speed apparatus for measuring air quantity
It is connected with valve positioner circuit.
The beneficial effects of the utility model：
The utility model can avoid blower fan from being worked in surge area, prevent detonation risk compared with conventional art.
Brief description of the drawings
Fig. 1 is structure chart of the present utility model.
Reference：
Induced-draft fan inlet duct (100), thermocouple (110), induced-draft fan connecting pipe (200) and smoke exhaust fan (300).
Induced-draft fan outlet conduit (400), wind speed apparatus for measuring air quantity (410), communicating pipe (500), valve positioner (510)
With flow control valve (520).
Embodiment
Below in conjunction with specific embodiment, make progressive explanation to the utility model.It should be understood that following examples are merely to illustrate
The utility model is not for restriction scope of the present utility model.
Embodiment 1
Fig. 1 is structure chart of the present utility model.
A kind of heating furnace induced-draft fan protection device includes：Induced-draft fan inlet duct (100), induced-draft fan connecting pipe (200),
Smoke exhaust fan (300), induced-draft fan outlet conduit (400) and communicating pipe (500), the induced-draft fan inlet duct (100) and smoke evacuation
Machine connecting pipe (200) is connected, and the induced-draft fan connecting pipe (200) is connected with smoke exhaust fan (300), the induced-draft fan connection
Pipeline (200) is connected with induced-draft fan outlet conduit (400), communicating pipe (500) two ends respectively with induced-draft fan inlet duct
(100) connected with induced-draft fan outlet conduit (400).
Wherein, the communicating pipe (500) is provided with valve positioner (510) and flow control valve (520), and the valve is determined
Position device (510) is connected with flow control valve (520).
The induced-draft fan inlet duct (100) is provided with thermocouple (110), the thermocouple (110) and valve positioner
(510) circuit is connected.
The induced-draft fan outlet conduit (400) is provided with wind speed apparatus for measuring air quantity (410), the wind speed air measuring dress
(410) are put to be connected with valve positioner (510) circuit.
Principle of the present utility model is gone out with a communicating pipe (500) connection induced-draft fan inlet duct (100) and induced-draft fan
Mouth pipeline (400), installs flow control valve (520) on communicating pipe (500), and with valve positioner (510), exhaust smoke level is low to be caused
During blower fan surge, flow control valve (520) can be opened.Due to being always negative pressure, valve opening in induced-draft fan inlet duct (100)
Afterwards, the flue gas of outlet can be automatically drawn into, increases intake, so that the surge area of blower fan is avoided, because suction is same sample ingredient
Flue gas, do not result in the second-time burning of residual combustible component in flue gas, cause detonation.This method can prevent it is quick-fried
Blower fan surge is avoided while combustion.
A thermocouple (110) is installed in induced-draft fan inlet duct (100) simultaneously, entrance flue gas temperature is measured, temperature is high
When setting value, flow control valve (520) can be automatically opened up, the temperature of flue gas is reduced, smoke exhaust fan is protected.
Embodiment of the present utility model is illustrated above, but the utility model is not limited thereto, only
Objective of the present utility model is not departed from, the utility model there can also be various change.
Claims (3)
1. a kind of heating furnace induced-draft fan protection device, it is characterised in that including：Induced-draft fan inlet duct (100), induced-draft fan connection
Pipeline (200), smoke exhaust fan (300), induced-draft fan outlet conduit (400) and communicating pipe (500), the induced-draft fan inlet duct
(100) it is connected with induced-draft fan connecting pipe (200), the induced-draft fan connecting pipe (200) is connected with smoke exhaust fan (300), institute
Induced-draft fan connecting pipe (200) is stated to be connected with induced-draft fan outlet conduit (400), communicating pipe (500) two ends respectively with smoke evacuation
Machine inlet duct (100) and induced-draft fan outlet conduit (400) connection；
Wherein, the communicating pipe (500) is provided with valve positioner (510) and flow control valve (520), the valve positioner
(510) it is connected with flow control valve (520).
2. a kind of heating furnace induced-draft fan protection device according to claim 1, it is characterised in that：The induced-draft fan inlet tube
Road (100) is provided with thermocouple (110), and the thermocouple (110) is connected with valve positioner (510) circuit.
3. a kind of heating furnace induced-draft fan protection device according to claim 1, it is characterised in that：The induced-draft fan outlet
Road (400) is provided with wind speed apparatus for measuring air quantity (410), the wind speed apparatus for measuring air quantity (410) and valve positioner (510)
Circuit is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720097758.0U CN206609301U (en) | 2017-01-25 | 2017-01-25 | A kind of heating furnace induced-draft fan protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720097758.0U CN206609301U (en) | 2017-01-25 | 2017-01-25 | A kind of heating furnace induced-draft fan protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206609301U true CN206609301U (en) | 2017-11-03 |
Family
ID=60167879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720097758.0U Expired - Fee Related CN206609301U (en) | 2017-01-25 | 2017-01-25 | A kind of heating furnace induced-draft fan protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206609301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097534A (en) * | 2020-09-15 | 2020-12-18 | 法孚斯坦因冶金技术（上海）有限公司 | Digital single heat accumulating type heating furnace |
-
2017
- 2017-01-25 CN CN201720097758.0U patent/CN206609301U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097534A (en) * | 2020-09-15 | 2020-12-18 | 法孚斯坦因冶金技术（上海）有限公司 | Digital single heat accumulating type heating furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171103 Termination date: 20220125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |