CN214948982U - Circulating air inlet device of circulating fluidized bed boiler - Google Patents
Circulating air inlet device of circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN214948982U CN214948982U CN202121047651.8U CN202121047651U CN214948982U CN 214948982 U CN214948982 U CN 214948982U CN 202121047651 U CN202121047651 U CN 202121047651U CN 214948982 U CN214948982 U CN 214948982U
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- China
- Prior art keywords
- fluidized bed
- pipe body
- bed boiler
- air inlet
- circulating
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- 238000007789 sealing Methods 0.000 claims abstract description 29
- 238000003780 insertion Methods 0.000 claims description 20
- 230000037431 insertion Effects 0.000 claims description 20
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005406 washing Methods 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001233242 Lontra Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model belongs to the technical field of circulation fluidized bed and specifically relates to a circulation air inlet unit of circulation fluidized bed boiler is related to, and it includes the vent pipe body, still includes along the inside air current direction of vent pipe body two at least filter plate that set gradually, vent pipe body inner wall correspondence is seted up with filter plate matched with inserting groove, inserting groove winds vent pipe body annular extends, just inserting groove one side intercommunication vent pipe body outer wall, filter plate one-to-one slip peg graft in the inserting groove, vent pipe body outer wall is equipped with and is used for sealing inserting groove open-ended seals the subassembly. This application has and is convenient for carry out the effect of not shutting down the washing, guaranteeing to gas filtration efficiency to the filter screen.
Description
Technical Field
The application relates to the field of circulating fluidized beds, in particular to a circulating air inlet device of a circulating fluidized bed boiler.
Background
The circulating fluidized bed boiler is a clean coal combustion technology with the highest industrialization degree, adopts fluidized combustion, and mainly structurally comprises a combustion chamber and a circulating return furnace. The circulating fluidized bed boiler has the advantages that the circulating fluidized bed boiler is the advanced technology for utilizing the energy of the difficult-to-burn solid fuel, and the circulating fluidized bed boiler has the advantages that the operating wind speed is high, the heterogeneous reaction processes such as combustion, desulfurization and the like are enhanced, the boiler capacity can be enlarged to the large capacity which can be accepted by the power industry at present, the basic problems such as thermal, mechanical and material science and the like and the engineering problems such as expansion, abrasion and overtemperature are well solved.
However, in the circulating air intake process of the existing circulating fluidized bed boiler, a plurality of defects still exist, for example, in the circulating air intake process, the filter screen plate for filtering air is troublesome to replace, and the filter efficiency is greatly reduced due to shutdown cleaning.
Disclosure of Invention
In order to facilitate the filter screen wash the change, guarantee the filtration efficiency to gas, this application provides a circulation air inlet unit of circulation fluidized bed boiler.
The application provides a circulation air inlet unit of circulation fluidized bed boiler adopts following technical scheme:
the circulating air inlet device of the circulating fluidized bed boiler comprises an air duct body and at least two filter screen plates which are sequentially arranged along the direction of air flow in the air duct body, wherein the inner wall of the air duct body is correspondingly provided with an insertion groove matched with the filter screen plates, the insertion groove extends annularly around the air duct body, one side of the insertion groove is communicated with the outer wall of the air duct body, the filter screen plates are inserted into the insertion groove in a one-to-one sliding mode, and the outer wall of the air duct body is provided with a sealing assembly used for sealing the opening of the insertion groove.
Preferably, the closing assembly comprises a pair of guide rails symmetrically arranged at two sides of the opening of the insertion groove, a closing plate connected between the pair of guide rails in a sliding manner along the length direction of the guide rails, and a driving mechanism for driving the closing plate to move.
Preferably, the driving mechanism comprises a shaft seat fixedly mounted on the outer wall of the ventilation pipeline body, a bidirectional threaded screw rod rotatably supported on the shaft seat, a first connecting block and a second connecting block which are respectively in threaded connection with a positive thread section and a negative thread section of the bidirectional threaded screw rod, a first connecting rod with one end hinged to the first connecting block, and a second connecting rod with one end hinged to the second connecting block, wherein the first connecting rod and the second connecting rod are symmetrically arranged, and the other ends of the first connecting rod and the second connecting rod are respectively hinged to the side wall of the sealing plate close to the bidirectional threaded screw rod.
Preferably, one end of the bidirectional threaded screw rod is fixedly provided with a rotating handle.
Preferably, a pair of guide rails is provided with a guide groove extending along the length direction of the guide rails on the surface close to each other, and two sides of the sealing plate are fixedly connected with guide blocks respectively connected in the guide groove in a sliding manner.
Preferably, the inner wall of the insertion groove far away from the sealing plate is fixedly connected with a spring, and the filter screen plate moves to abut against the spring.
Preferably, one end of the sealing plate, which is close to the side wall of the insertion groove and is far away from the driving mechanism, is provided with a chamfer.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through setting up two at least filter screens in the air duct, after using for a long time, when needing to wash filter screens, take out through the filter screens of pegging graft in the inserting groove of will sliding, and seal the inserting groove opening part through the closing member, prevent that the internal gas of air duct from escaping outward, and another filter screens still keeps under operating condition, guarantee the filtration efficiency to the gas, after washing one of them filter screens to accomplish, open the inserting groove opening part through the closing member, and insert filter screens into the inserting groove and can continue to work, and under the filtration of two at least filter screens, promote the filter effect to the internal gas of air duct;
2. under the coordination of the two-way threaded screw rod, the first connecting block, the second connecting block, the first connecting rod and the second connecting rod, when the sealing plate is driven to move, the two-way threaded screw rod is rotated to drive the first connecting block and the second connecting block to move close to or away from each other, so that one ends, far away from the two-way threaded screw rod, of the first connecting rod and the second connecting rod drive the sealing plate to move away from or close to the two-way threaded screw rod, and the sealing plate is enabled to seal or open the opening of the insertion groove;
3. under the matching of the guide grooves and the guide blocks, the moving path of the sealing plate is limited, so that the sealing plate is more stable;
4. the springs are arranged in the inserting grooves, so that when the sealing plates are provided with openings, and workers need to take out the filter screen plates, the filter screen plates are ejected out through the springs, and the workers can operate the filter screen plates conveniently;
5. through setting up the chamfer at the shrouding tip, when staff's drive shrouding started, through the guide effect of chamfer, be convenient for push up into the inserting groove with filtering the otter board.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.
Fig. 2 is a partial cross-sectional view of an embodiment of the present application.
Description of reference numerals: 1. a vent tube body; 2. a filter screen plate; 3. inserting grooves; 4. a spring; 5. a closure assembly; 6. a guide rail; 7. closing the plate; 8. a drive mechanism; 9. a guide groove; 10. a guide block; 11. a shaft seat; 12. a bidirectional threaded screw rod; 13. a first connection block; 14. a second connecting block; 15. a first connecting rod; 16. a second connecting rod; 17. the handle is rotated.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses circulation air inlet unit of circulation fluidized bed boiler. Referring to fig. 1 and 2, the circulating air inlet device of the circulating fluidized bed boiler comprises an air duct body 1 and two filter screen plates 2, wherein the air duct body 1 is in a square tube shape, the filter screen plates 2 are in a rectangular plate shape matched with the air duct body 1, and the two filter screen plates 2 are sequentially arranged along the air flow direction in the air duct body 1.
Referring to fig. 1 and 2, for installing filter plate 2 in order to be convenient for, the corresponding inserting groove 3 of having seted up two and filter plate 2 matched with of 1 inner wall of vent pipe body, inserting groove 3 extends around 1 annular of vent pipe body, and 3 one sides intercommunication vent pipe body outer walls of inserting groove 3, the sliding of filter plate 2 one-to-one is pegged graft in inserting groove 3, inner wall fixedly connected with spring 4 of shrouding 7 is kept away from to inserting groove 3, filter plate 2 removes butt in spring 4, 1 outer wall of vent pipe body is equipped with two sets of 3 open-ended seal subassemblies 5 that are used for sealing inserting groove.
Referring to fig. 1 and 2, the closing assembly 5 includes a pair of guide rails 6 symmetrically disposed on two sides of the opening of the inserting groove 3, a sealing plate 7 slidably connected between the pair of guide rails 6 along the length direction of the guide rails 6, and a driving mechanism 8 for driving the sealing plate 7 to move, wherein a guide groove 9 extending along the length direction of the guide rails 6 is formed in the surface where the pair of guide rails 6 are close to, a guide block 10 slidably connected in the guide groove 9 is respectively fixedly connected to two sides of the sealing plate 7, and under the cooperation of the guide groove 9 and the guide block 10, a moving path of the sealing plate 7 is defined, so that the sealing plate 7 is more stable.
Referring to fig. 1 and 2, the one end that shrouding 7 is close to the lateral wall of inserting groove 3 and keeps away from actuating mechanism 8 is equipped with the chamfer to when staff's drive shrouding 7 starts, through the guide effect of chamfer, be convenient for push up into inserting groove 3 with filter plate 2 in.
Referring to fig. 1 and 2, the driving mechanism 8 includes a shaft seat 11 fixedly installed on the outer wall of the ventilation pipeline body 1, a two-way threaded screw rod 12 rotatably supported on the shaft seat 11, a first connecting block 13 and a second connecting block 14 respectively in threaded connection with a positive thread section and a negative thread section of the two-way threaded screw rod 12, a first connecting rod 15 with one end hinged to the first connecting block 13, and a second connecting rod 16 with one end hinged to the second connecting block 14, the first connecting rod 15 and the second connecting rod 16 are symmetrically arranged, and the other ends of the first connecting rod 15 and the second connecting rod 16 are respectively hinged to the side wall of the sealing plate 7 close to the two-way threaded screw rod 12, and a rotating handle 17 is fixedly installed at one end of the two-way threaded screw rod 12.
The implementation principle of the circulating air inlet device of the circulating fluidized bed boiler in the embodiment of the application is as follows:
after long-time use, when the filter screen plates 2 need to be cleaned, the filter screen plates 2 inserted in the insertion grooves 3 in a sliding manner are taken out, then the bidirectional threaded screw rod 12 is rotated to drive the first connecting block 13 and the second connecting block 14 to move away from each other, so that one ends of the first connecting rod 15 and the second connecting rod 16 away from the bidirectional threaded screw rod 12 drive the closing plate 7 to move away from the bidirectional threaded screw rod 12, thereby the opening of the insertion grooves 3 is closed by the closing plate 7, the gas in the ventilation pipeline body 1 is prevented from escaping, while the other filter screen plate 2 is still kept in a working state, the filtering efficiency of the gas is ensured, after one of the filter screen plates 2 is cleaned, the opening of the insertion grooves 3 is opened again by the closing component 5, and the filter screen plate 2 is inserted into the insertion grooves 3 to continue working, and under the filtration of at least two filter screen plates 2, the filtering effect on the gas in the vent pipeline body 1 is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. The utility model provides a circulation air inlet unit of circulation fluidized bed boiler, includes breather pipe body (1), its characterized in that: the air pipe is characterized by further comprising at least two filter screen plates (2) which are sequentially arranged along the air flow direction in the air pipe body (1), wherein the inner wall of the air pipe body (1) is correspondingly provided with an insertion groove (3) matched with the filter screen plates (2), the insertion groove (3) extends annularly around the air pipe body (1), one side of the insertion groove (3) is communicated with the outer wall of the air pipe body (1), the filter screen plates (2) are slidably inserted into the insertion groove (3) in a one-to-one correspondence manner, and the outer wall of the air pipe body (1) is provided with a sealing assembly (5) for sealing the opening of the insertion groove (3).
2. The circulating air inlet device of the circulating fluidized bed boiler according to claim 1, characterized in that: the sealing assembly (5) comprises a pair of guide rails (6) symmetrically arranged on two sides of the opening of the insertion groove (3), sealing plates (7) connected between the pair of guide rails (6) in a sliding mode along the length direction of the guide rails (6), and a driving mechanism (8) used for driving the sealing plates (7) to move.
3. The circulating air inlet device of the circulating fluidized bed boiler according to claim 2, characterized in that: the driving mechanism (8) comprises a shaft seat (11) fixedly installed on the outer wall of the ventilation pipeline body (1), a bidirectional threaded screw rod (12) rotatably supported on the shaft seat (11), a first connecting block (13) and a second connecting block (14) which are respectively in threaded connection with a positive thread section and a negative thread section of the bidirectional threaded screw rod (12), a first connecting rod (15) with one end hinged to the first connecting block (13), and a second connecting rod (16) with one end hinged to the second connecting block (14), the first connecting rod (15) and the second connecting rod (16) are symmetrically arranged, and the other ends of the first connecting rod (15) and the second connecting rod (16) are respectively hinged to the side wall, close to the bidirectional threaded screw rod (12), of the sealing plate (7).
4. The circulating air inlet device of the circulating fluidized bed boiler according to claim 3, characterized in that: one end of the bidirectional threaded screw rod (12) is fixedly provided with a rotating handle (17).
5. The circulating air inlet device of the circulating fluidized bed boiler according to claim 2, characterized in that: the guide rail (6) is provided with a pair of guide grooves (9) extending along the length direction of the guide rail (6) on the surface close to the guide rail, and two sides of the sealing plate (7) are fixedly connected with guide blocks (10) which are respectively connected with the guide grooves (9) in a sliding mode.
6. The circulating air inlet device of the circulating fluidized bed boiler according to claim 2, characterized in that: the inner wall of the inserting groove (3) far away from the sealing plate (7) is fixedly connected with a spring (4), and the filter screen plate (2) is abutted to the spring (4) in a moving mode.
7. The circulating air inlet device of the circulating fluidized bed boiler according to claim 6, characterized in that: and a chamfer is arranged at one end, close to the side wall of the insertion groove (3) and far away from the driving mechanism (8), of the sealing plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121047651.8U CN214948982U (en) | 2021-05-15 | 2021-05-15 | Circulating air inlet device of circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121047651.8U CN214948982U (en) | 2021-05-15 | 2021-05-15 | Circulating air inlet device of circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214948982U true CN214948982U (en) | 2021-11-30 |
Family
ID=79060839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121047651.8U Expired - Fee Related CN214948982U (en) | 2021-05-15 | 2021-05-15 | Circulating air inlet device of circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214948982U (en) |
-
2021
- 2021-05-15 CN CN202121047651.8U patent/CN214948982U/en not_active Expired - Fee Related
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| 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: 20211130 |