CN215112728U - Sealing device for outlet baffle of induced draft fan - Google Patents
Sealing device for outlet baffle of induced draft fan Download PDFInfo
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- CN215112728U CN215112728U CN202120572353.4U CN202120572353U CN215112728U CN 215112728 U CN215112728 U CN 215112728U CN 202120572353 U CN202120572353 U CN 202120572353U CN 215112728 U CN215112728 U CN 215112728U
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Abstract
The utility model relates to a sealing device of draught fan outlet baffle, be equipped with outlet baffle on the flue, including sealed tuber pipe, linking tuber pipe and sealed fan, the one end fixed mounting of sealed tuber pipe is in outlet baffle's mounted position department, just the air-out direction of sealed tuber pipe is parallel the plane at outlet baffle place, the other end of sealed tuber pipe with pass through between the sealed fan the detachable sealing connection of linking tuber pipe. When needs are to the trouble outage rush-repair of single draught fan, with sealed fan with connect through the connecting air pipe between the sealed tuber pipe, restart sealed fan to block the flue gas and scurry back to trouble draught fan place one side, ensure trouble fan safety maintenance. When the system normally operates, the sealing fan is moved into the storehouse, so that the sealing fan is prevented from being corroded, and the service life of the sealing fan is prolonged.
Description
Technical Field
The utility model relates to a flue seals technical field, concretely relates to sealing device of draught fan outlet baffle.
Background
Before emptying, coal-fired flue gas, in particular to coal-fired flue gas of a power plant, needs to enter a desulfurization device for desulfurization and then is sent to a chimney for emission.
The existing flue gas desulfurization pipeline system generally comprises a main flue communicated with a boiler induced draft fan, wherein the main flue enters a desulfurization tower through a converging flue, and dust and SO in flue gas2After being absorbed by the absorption liquid, the clean flue gas comes out from the top of the desulfurizing tower and is discharged to the air through a chimney.
In order to conveniently carry out system maintenance under abnormal conditions, an isolation baffle is installed at the outlet position of the induced draft fan, when the induced draft fan normally runs, the baffle is fully opened, when a single induced draft fan is in failure shutdown and rush-repair, the baffle is closed and isolated from the system, but the existing isolation is only carried out through the baffle, and the baffle is of a shutter structure, so that the sealing is not tight, the smoke flees, and the maintenance work cannot be safely carried out.
SUMMERY OF THE UTILITY MODEL
In view of this, a need exists for a sealing device for an outlet baffle of an induced draft fan, so as to solve the problems that the existing sealing device only adopts a baffle for sealing, when a single induced draft fan is in failure, is stopped, is repaired, and has poor sealing, smoke gas flees back, cannot be completely isolated from a system, and the repair work cannot be safely carried out.
The technical scheme of the utility model a sealing device of draught fan outlet baffle is provided, be equipped with outlet baffle on the flue, including sealed tuber pipe, connecting air pipe and portable sealed fan, the one end fixed mounting of sealed tuber pipe is in outlet baffle's mounted position department, just the air-out direction of sealed tuber pipe is on a parallel with the plane at outlet baffle place, the other end of sealed tuber pipe with pass through between the portable sealed fan connecting the detachable sealing connection of tuber pipe, the gyro wheel is installed collapsibly the bottom of base.
Furthermore, one end of the connecting air pipe is detachably and hermetically connected with the sealing air pipe, and the other end of the connecting air pipe is detachably and hermetically connected with the outlet of the movable sealing fan.
Furthermore, a check valve is further installed on the sealing air pipe or the connecting air pipe.
Furthermore, a gate valve is further installed on the sealing air pipe or the connecting air pipe.
Further, the movable sealing fan is installed on the base, the rollers are installed at the bottom of the base, and the rollers are foldably installed at the bottom of the base.
Furthermore, an air adjusting door is further installed at the outlet position of the movable sealing fan and used for adjusting the air quantity of the sealing air.
Furthermore, one end of the flue is connected with the desulfurizing tower, and the other end of the flue is connected with the induced draft fan.
Furthermore, an annular sealing groove is formed in the inner walls of the two ends of the connecting air pipe, and an annular O-shaped sealing ring is fixedly mounted in the sealing groove.
Furthermore, the sealing air pipe is connected with the connecting air pipe through a quick-assembling clamp connector.
Further, the draught fan includes two, two communicate through the pipeline between the draught fan, and each equal fixed mounting has one on the flue at draught fan place the exit baffle, every the equal fixed mounting in exit baffle position department has sealed tuber pipe and connecting air pipe.
The utility model discloses beneficial effect for prior art can produce does:
the utility model discloses an one end fixed mounting of exit baffle's mounted position department has sealed tuber pipe, just the air-out direction of sealed tuber pipe is parallel the plane at exit baffle place, the other end of sealed tuber pipe with pass through between the portable sealed fan connect the detachable sealing connection of tuber pipe, when needs are salvageed single draught fan trouble outage, will with portable sealed fan with connect through the tuber pipe between the sealed tuber pipe, restart portable sealed fan to block the flue gas and scurry to draught fan place one side, ensure trouble fan safety inspection.
On the other hand the utility model discloses a with portable sealed fan with detachable connection between the sealed tuber pipe can be when the system normal operating, in removing sealed fan to the storehouse to avoid sealed fan to corrode, prolonged sealed fan's life.
Drawings
Fig. 1 is a schematic structural view of a sealing device of an outlet baffle of an induced draft fan according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment in which an induced draft fan is connected with a sealing air duct;
FIG. 3 is a schematic structural view of an embodiment of a sealed fan;
the method comprises the following steps of 1-flue sealing device, 11-sealing air pipe, 12-connecting air pipe, 13-movable sealing fan, 14-check valve, 15-gate valve, 16-clamp joint, 17-damper, 18-machine base, 2-outlet baffle, 3-sealing fan platform, 4-motor, 5-roller, 6-induced draft fan and 7-flue.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.
The embodiment of the utility model provides a sealing device 1 of draught fan exit baffle, exit baffle install on flue 7, draught fan 6 is connected to the one end of flue 7, and the desulfurizing tower (not shown in the figure) is connected to the other end, draught fan 6 will contain the sulphur flue gas and introduce to carry out the desulfurization in the desulfurizing tower and purify the back, and the rethread chimney discharges to in the air. And an outlet baffle 2 is arranged on the flue 7 and used for closing the outlet baffle 2 when the draught fan 6 needs to be overhauled, so that the flue gas is prevented from flowing back and the draught fan device is overhauled.
When needs were to single draught fan trouble outage rush-repair, close exit baffle 2, simultaneously with portable sealed fan 13 with connect through connecting air duct 12 between the sealed tuber pipe 11, restart portable sealed fan 13 to block the flue gas and scurry to draught fan 6 place one side, ensure trouble fan safety inspection. When the system normally operates, the movable sealing fan 13 and the sealing air pipe 11 are disassembled, and the movable sealing fan 13 is moved out to the storehouse, so that the movable sealing fan 13 is prevented from being corroded, and the service life of the movable sealing fan 13 is prolonged.
It should be noted here that one end of the connecting air duct 12 is detachably and hermetically connected to the sealed air duct 11, and the other end is detachably and hermetically connected to the outlet of the movable sealed fan 13. Or one end of the connecting air pipe 12 is detachably connected with the sealed air pipe 11 in a sealing manner, and the other end of the connecting air pipe is fixedly connected with the sealed fan 13 in a sealing manner. When the flue 7 needs to be sealed by the movable sealing fan 13, the connecting air pipe 12 and the sealing air pipe 11 are connected in a sealing manner, when the system normally operates and does not need to be overhauled, the connecting air pipe 12 and the sealing air pipe 11 are disassembled, and the movable sealing fan 13 and the connecting air pipe 12 are transferred into a storehouse.
An annular sealing groove is formed in the inner walls of the two ends of the connecting air pipe 12, and an annular sealing ring is fixedly mounted in the sealing groove. When the system needs to be overhauled, the connecting air pipe 12 and the sealing ring are inserted into the sealing air pipe, and the connecting air pipe 12 and the sealing air pipe 11 are connected in a sealing manner through the sealing ring. The sealing ring is an O-shaped sealing ring.
Of course, the sealing air duct 11 can also be connected to the connecting air duct 12 in a sealing manner by means of an existing clamp connection 16. First clamp joint is connected to the second end of sealed tuber pipe 11, the one end of connecting tuber pipe 12 with pass through between the sealed tuber pipe 11 first clamp joint sealing connection, portable sealed fan 13's air outlet fixedly connected with second clamp joint, the other end of connecting tuber pipe 12 with pass through between the portable sealed fan 13 second clamp joint carries out sealing connection.
In order to prevent the smoke from returning in the pipeline, a check valve 14 and a gate valve 15 are further installed on the sealed air pipe 11. The gate valve 15 can also be installed on the connecting air pipe 12, when in normal operation, the gate valve is completely closed, the gate valve and the check valve play a role in preventing flue gas from leaking, when the draught fan is overhauled, after the connecting pipe and the sealing fan are installed, the gate valve is opened, and the sealing fan is started
Because the efficiency of the catalyst of the unit denitration device is reduced after the catalyst is used for a period of time, the ammonia spraying amount is increased, the sulfur content of the flue gas is increased, and after the unit is stopped, the smoke dust deposited on the outlet baffle 2 of the induced draft fan 6, the movable sealing fan 13 and the bottom connecting air pipe 12 and water molecules in the air are subjected to chemical reaction to generate sulfurous acid, so that the sealed fan and the bottom pipeline are seriously corroded. In order to prevent the movable sealing fan 13 from being corroded, the movable sealing fan 13 is installed on a base 18, and rollers are installed at the bottom of the base 18. When the system normally operates, the movable sealing fan 13 is pushed into the storehouse for storage, so that corrosion is prevented.
In order to move the sealing fan conveniently, the bottom of the sealing fan is fixedly provided with a roller 5, the roller is a foldable roller in order to fix the sealing fan when the sealing fan is used, and the roller is folded and folded when the sealing fan is used and is fixed on the sealing fan platform.
The bottom of the sealed housing may also be provided without rollers 5 and may be transported to a warehouse by other means of transport, such as a hydraulic forklift. For convenience of use, it is preferable that the bottom of the moving sealing fan 13 is provided with a roller 5 so that the moving sealing fan 13 can be directly pushed.
And an air adjusting door 17 is further installed at the outlet position of the movable sealing fan 13 and used for adjusting the air quantity of the sealing air.
Under the general condition, single unit has two draught fans 6, two communicate through the pipeline between the draught fan 6, and each equal fixed mounting has one on the flue 7 at draught fan 6 place exit barrier 2, every exit barrier 2 equal fixed mounting in position department has sealed tuber pipe and connecting air pipe. When the draught fan 6 normally operates, the sealing fan is stored in a storehouse, and after the unilateral draught fan fails and quits operation, the sealing fan can be quickly moved to the site to be put into operation, so that the back-fleeing of smoke in the flue 7 can be blocked, and the smoke at the outlet of the draught fan 6 on the other side can be blocked to flee into the site, and the safety maintenance of the failed fan is ensured. Meanwhile, a plurality of induced draft fans 6 share one movable sealing fan 13, so that the effects of reducing cost and improving equipment reliability are achieved, and the application effect is obvious.
When the induced draft fan 6 normally operates, the movable sealing fan 13 is stored in a storehouse, and after the unilateral induced draft fan 6 breaks down and quits operation, the movable sealing fan 13 can be quickly moved to the site to be put into operation so as to block smoke from entering the outlet of the induced draft fan 6 on the other side and ensure the safe maintenance of the failed fan. The utility model has the characteristics of simple structure, the reliability is high obvious, the specially adapted unit ammonia escape exceeds standard to draught fan 6 outlet baffle 2 sealed fan corrode serious design and application, through remove sealed fan 13 between storehouse and scene, can avoid portable sealed fan 13 to corrode, and can't in time put into operation when needs use, delay the maintenance time, still can a portable sealed fan 13 of 6 shares of a many draught fans in addition, thereby reach reduce cost, improve equipment reliability's effect, the result of application is obvious.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. The utility model provides a sealing device of draught fan outlet baffle, a serial communication port, including sealed tuber pipe, connecting air pipe and portable sealed fan, the one end fixed mounting of sealed tuber pipe is in outlet baffle's mounted position department, just the air-out direction of sealed tuber pipe is on a parallel with the plane at outlet baffle place, the other end of sealed tuber pipe with pass through between the portable sealed fan the detachable sealing connection of connecting air pipe.
2. The sealing device for the outlet baffle of the induced draft fan according to claim 1, wherein one end of the connecting air pipe is detachably and hermetically connected with the sealing air pipe, and the other end of the connecting air pipe is detachably and hermetically connected with the outlet of the movable sealing fan.
3. The sealing device of the induced draft fan outlet baffle plate according to claim 1 or 2, wherein a check valve is further installed on the sealing air pipe or the connecting air pipe.
4. The sealing device of the induced draft fan outlet baffle plate according to claim 1 or 2, wherein the sealing air pipe or the connecting air pipe is further provided with a gate valve.
5. The induced draft fan outlet baffle sealing device according to claim 1, wherein the movable sealing fan is mounted on the base, rollers are mounted at the bottom of the base, and the rollers are foldably mounted at the bottom of the base.
6. The sealing device of the induced draft fan outlet baffle plate according to claim 1, wherein an air damper is further installed at the outlet position of the movable sealing fan and used for adjusting the air volume of the sealing air.
7. The sealing device for the outlet baffle of the induced draft fan as claimed in claim 1, wherein one end of the flue is connected with the desulfurizing tower, and the other end is connected with the induced draft fan.
8. The sealing device of the induced draft fan outlet baffle according to claim 1, wherein the inner walls of the two ends of the connecting air pipe are respectively provided with an annular sealing groove, and an annular O-shaped sealing ring is fixedly installed in the sealing groove.
9. The sealing device for the outlet baffle of the induced draft fan as claimed in claim 1, wherein the sealing air pipe and the connecting air pipe are connected through a quick-mounting clamp joint.
10. The sealing device for the outlet baffle of the induced draft fan as claimed in claim 7, wherein each unit is provided with two induced draft fans in parallel, the two induced draft fans are communicated with each other through a pipeline and then are converged into the desulfurizing tower, each induced draft fan is fixedly provided with one outlet baffle on the flue, and each outlet baffle is fixedly provided with the sealing air pipe and the connecting air pipe at the position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120572353.4U CN215112728U (en) | 2021-03-19 | 2021-03-19 | Sealing device for outlet baffle of induced draft fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120572353.4U CN215112728U (en) | 2021-03-19 | 2021-03-19 | Sealing device for outlet baffle of induced draft fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215112728U true CN215112728U (en) | 2021-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120572353.4U Active CN215112728U (en) | 2021-03-19 | 2021-03-19 | Sealing device for outlet baffle of induced draft fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215112728U (en) |
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2021
- 2021-03-19 CN CN202120572353.4U patent/CN215112728U/en active Active
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