CN220134670U - Flue adjusting butterfly valve capable of automatically compensating pulling force of chimney - Google Patents
Flue adjusting butterfly valve capable of automatically compensating pulling force of chimney Download PDFInfo
- Publication number
- CN220134670U CN220134670U CN202321678937.5U CN202321678937U CN220134670U CN 220134670 U CN220134670 U CN 220134670U CN 202321678937 U CN202321678937 U CN 202321678937U CN 220134670 U CN220134670 U CN 220134670U
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- flue gas
- flue
- gas inlet
- butterfly valve
- port
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000003546 flue gas Substances 0.000 claims abstract description 57
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 239000000779 smoke Substances 0.000 claims description 10
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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Abstract
The utility model relates to a flue regulating butterfly valve capable of automatically compensating the pulling force of a chimney, which comprises a shell, wherein the shell is of a tee joint structure, two ports in the tee joint structure are a flue gas inlet and a flue gas outlet respectively, the other port is an air compensating port, the flue gas inlet is communicated with a flue gas pipeline of a kiln, the flue gas outlet is connected with the chimney, the air compensating port allows outside air to enter the butterfly valve, a valve plate is arranged between the flue gas inlet and the air compensating port, the valve plate is hinged with the shell through a rotating shaft, and the rotating shaft is arranged at the intersection between the flue gas inlet and the air compensating port. The flue regulating butterfly valve capable of automatically compensating the pulling force of the chimney can conveniently perform stepless switching adjustment between closing the flue gas inlet channel, opening the air compensation port channel, opening the flue gas inlet channel and closing the air compensation port channel. And the hearth pressure under different working conditions is stabilized, the zero pressure or the micro positive pressure is kept, the energy consumption is reduced, and the service life of the kiln is prolonged.
Description
Technical Field
The utility model belongs to the field of furnace smoke discharging and hearth pressure control equipment, and relates to a flue regulating butterfly valve capable of automatically compensating the pulling force of a chimney.
Background
Furnace pressure control is an important part of furnace operation control. The hearth negative pressure can lead the kiln to suck external cold air, increase the oxygen content of flue gas and increase the energy consumption; too high positive pressure of the hearth can cause smoke to be discharged around the furnace body in an unorganized manner, the temperature of the furnace body and the surrounding environment is increased, the working environment is influenced, the safety risk is increased, and the service life of equipment is shortened.
In furnace smoke discharge and furnace pressure control, a flue butterfly valve is used for controlling the furnace smoke discharge and the furnace pressure. The chimney has a fixed height and has a relatively stable pulling force. When the flow is small, the flue butterfly valve is closed, the front-rear differential pressure of the flue butterfly valve is increased, and the negative pressure of a hearth is reduced; when the flow is large, the flue butterfly valve is opened, the front-rear differential pressure of the flue butterfly valve is reduced, and the positive pressure of the hearth is reduced.
However, with the increasing requirements of energy conservation and environmental protection and the continuous development of technology, the adjustment ratio of different working conditions of the kiln is larger and larger, and the minimum flow of flue gas is extremely small. After the traditional flue butterfly valve is closed to be small, a certain gap amount which is difficult to control still exists. Under the condition of certain pulling force, when the smoke amount of the chimney is extremely small, the negative pressure of the hearth is larger, and the energy consumption of the kiln is increased.
Disclosure of Invention
The utility model provides a flue regulating butterfly valve capable of automatically compensating the pulling force of a chimney, which solves the problems of positive pressure and larger negative pressure of the hearth under different working conditions of the hearth, reduces the energy consumption of the kiln and prolongs the service life of the kiln.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a flue adjusting butterfly valve capable of automatically compensating the pulling force of a chimney is characterized in that: the butterfly valve comprises a shell, the shell is of a three-way structure, two ports in the three-way structure are respectively a flue gas inlet and a flue gas outlet, the other port is an air compensation port, the flue gas inlet is communicated with a flue gas pipeline of a kiln, the flue gas outlet is connected with a chimney, the air compensation port allows outside air to enter the butterfly valve, a valve plate is arranged between the flue gas inlet and the air compensation port and is hinged with the shell through a rotating shaft, and the rotating shaft is arranged at the intersection between the flue gas inlet and the air compensation port.
The utility model has the beneficial effects that:
the flue regulating butterfly valve capable of automatically compensating the pulling force of the chimney can conveniently perform stepless switching adjustment between closing the flue gas inlet channel, opening the air compensation port channel, opening the flue gas inlet channel and closing the air compensation port channel. And the hearth pressure under different working conditions is stabilized, the zero pressure or the micro positive pressure is kept, the energy consumption is reduced, and the service life of the kiln is prolonged.
Drawings
FIG. 1 is a perspective view of a flue adjustment butterfly valve that automatically compensates for stack pull out forces in accordance with the present utility model.
Fig. 2 is a cross-sectional view of fig. 1.
FIG. 3 is a perspective view of a valve plate of a flue adjusting butterfly valve at 0 DEG for automatically compensating for the pulling force of a chimney.
Fig. 4 is a cross-sectional view of fig. 3.
Fig. 5 is a schematic diagram of a state structure of a valve plate of a flue adjusting butterfly valve at 90 ° for automatically compensating for a chimney pulling force.
Fig. 6 is a cross-sectional view of fig. 5.
FIG. 7 is a schematic diagram of a use state of a flue adjusting butterfly valve for automatically compensating for a chimney pull.
Wherein: the device comprises a shell 1, a valve plate 2, a rotating shaft 3, an electric actuator 4, a smoke inlet A, a smoke outlet B and an air compensation port C.
Detailed Description
Referring to fig. 1 to 7, the utility model relates to a flue regulating butterfly valve capable of automatically compensating the pulling force of a chimney, which comprises a shell 1, wherein the shell 1 is of a three-way structure, two ports in the three-way structure are a flue gas inlet A and a flue gas outlet B respectively, the other port is an air compensating port C, a certain angle is formed between the air compensating port and the flue gas inlet A, namely, an included angle is formed, the included angle is generally vertical to 90 degrees, and the air compensating port C is provided with a certain inclined angle, so that the butterfly valve is of a rainproof and ash-proof shielding design.
The flue gas inlet A is communicated with a flue gas pipeline of the kiln, flue gas from the kiln enters from the A, the flue gas outlet B is connected with a chimney, the air compensation port C allows outside air to enter into the butterfly valve, a valve plate 2 is arranged between the flue gas inlet A and the air compensation port C, the valve plate 2 is hinged with the shell 1 through a rotating shaft 3, the rotating shaft 3 is arranged at the intersection between the flue gas inlet A and the air compensation port C, so that the valve plate 2 can rotate by 90 degrees with the rotating shaft 3 as the center, and a small gap is reserved between the valve plate 2 and the inner wall of the shell 1 when the valve plate 2 rotates.
When the valve plate 2 rotates to 0 degree, the valve plate 2 blocks the flue gas inlet A, and the air compensation port C is completely opened; when the valve plate rotates to 90 degrees, the valve plate 2 blocks the air compensation opening C, and the flue gas inlet A and the flue gas outlet B are completely unobstructed; when the valve plate 2 rotates to a certain angle of 0-90 degrees, the smoke inlet A and the air compensation port C are correspondingly partially opened.
The rotation of the rotating shaft 3 is controlled by the electric actuator 4, the electric actuator 4 is an angular travel electric actuator, the rotation angle of the rotating shaft 3 can be controlled, and the rotating shaft 3 is locked after the rotating shaft rotates to a required angle, so that the rotating shaft 3 is prevented from rotating. Therefore, stepless switching adjustment can be conveniently carried out between closing the flue gas inlet A channel, opening the air compensation port C channel, opening the flue gas inlet A channel and closing the air compensation port C channel.
The flue regulating butterfly valve capable of automatically compensating the pulling force of the chimney is used in the following manner:
1) When the flow of kiln flue gas becomes smaller, the valve plate angle is controlled to be reduced, the area of a flue gas inlet A channel is reduced, the differential pressure between the flue gas inlet A and a flue gas outlet B is increased, the area of an air compensation port C channel is automatically opened, the air amount sucked by the air compensation port C is increased, and the pulling force of a flue gas outlet B (chimney) is reduced. The two effects are added together, so that the flue gas inlet A (kiln) is at zero pressure or micro-positive pressure.
2) When the flow of kiln flue gas becomes large, the valve plate angle is controlled to be opened, the area of a flue gas inlet A channel is increased, the differential pressure between the flue gas inlet A and a flue gas outlet B is reduced, the area of an air compensation port C channel is automatically closed, the air quantity of the air sucked by the air compensation port C is reduced, and the pulling force of a flue gas outlet B (chimney) is increased. The two effects are added together, and the positive pressure of the flue gas inlet A (furnace kiln) is reduced.
Therefore, the flue regulating butterfly valve can automatically compensate the pulling force of the chimney, can stabilize the furnace pressure under different working conditions, reduce the energy consumption and prolong the service life of the kiln.
Claims (7)
1. A flue adjusting butterfly valve capable of automatically compensating the pulling force of a chimney is characterized in that: the butterfly valve comprises a shell, the shell is of a three-way structure, two ports in the three-way structure are respectively a flue gas inlet and a flue gas outlet, the other port is an air compensation port, the flue gas inlet is communicated with a flue gas pipeline of a kiln, the flue gas outlet is connected with a chimney, the air compensation port allows outside air to enter the butterfly valve, a valve plate is arranged between the flue gas inlet and the air compensation port and is hinged with the shell through a rotating shaft, and the rotating shaft is arranged at the intersection between the flue gas inlet and the air compensation port.
2. The flue regulating butterfly valve for automatically compensating for stack pull-out force according to claim 1, wherein: an included angle is formed between the air compensation opening and the smoke inlet.
3. The flue regulating butterfly valve for automatically compensating for stack pulling force according to claim 2, wherein: the included angle between the air compensation opening and the flue gas inlet is 90 degrees.
4. The flue regulating butterfly valve for automatically compensating for stack pull-out force according to claim 1, wherein: when the valve plate rotates to 0 degree, the valve plate blocks the smoke inlet, and the air compensation port is completely opened; when the valve plate rotates to 90 degrees, the valve plate blocks the air compensation port, and the flue gas inlet and the flue gas outlet are completely unobstructed; when the valve plate rotates to a certain angle of 0-90 degrees, the flue gas inlet and the air compensation port are partially opened.
5. The flue regulating butterfly valve for automatically compensating for stack pull-out force according to claim 1, wherein: the rotation of the rotating shaft is controlled by an electric actuator, and the electric actuator is an angular travel electric actuator.
6. The flue regulating butterfly valve for automatically compensating for stack pull-out force according to claim 1, wherein: when the valve plate rotates, a gap is reserved between the valve plate and the inner wall of the shell.
7. The flue regulating butterfly valve for automatically compensating for stack pull-out force according to claim 1, wherein: the air compensation opening C is of an inclined design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321678937.5U CN220134670U (en) | 2023-06-29 | 2023-06-29 | Flue adjusting butterfly valve capable of automatically compensating pulling force of chimney |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321678937.5U CN220134670U (en) | 2023-06-29 | 2023-06-29 | Flue adjusting butterfly valve capable of automatically compensating pulling force of chimney |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220134670U true CN220134670U (en) | 2023-12-05 |
Family
ID=88955780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321678937.5U Active CN220134670U (en) | 2023-06-29 | 2023-06-29 | Flue adjusting butterfly valve capable of automatically compensating pulling force of chimney |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220134670U (en) |
-
2023
- 2023-06-29 CN CN202321678937.5U patent/CN220134670U/en active Active
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