CN217785127U - Anti-coking device for circulating fluidized bed boiler - Google Patents
Anti-coking device for circulating fluidized bed boiler Download PDFInfo
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- CN217785127U CN217785127U CN202221666570.0U CN202221666570U CN217785127U CN 217785127 U CN217785127 U CN 217785127U CN 202221666570 U CN202221666570 U CN 202221666570U CN 217785127 U CN217785127 U CN 217785127U
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Abstract
The utility model discloses a circulating fluidized bed is anti-coking device for boiler relates to the boiler anti-coking field, including the boiler, the lower extreme of boiler is connected with the heat exchanger, the internally mounted of heat exchanger has the spiral heat exchange tube, clearance mechanism has been cup jointed in the outside of spiral heat exchange tube, clearance mechanism includes the first clearance lantern ring and the second clearance lantern ring, the first clearance lantern ring and the second clearance lantern ring pass through the connecting rod and connect, the upper surface of the second clearance lantern ring is connected with the drive shaft, the drive shaft runs through the side of going up of heat exchanger, the upper end of drive shaft is connected with the clamp plate, the top of clamp plate is provided with reciprocal commentaries on classics board, one side of reciprocal commentaries on classics board is connected with driving motor. The spiral heat exchange tube is characterized in that the spiral heat exchange tube is provided with a cleaning mechanism, the cleaning mechanism is driven by the driving mechanism, the spiral heat exchange tube is continuously scraped in the working process, and the ash and slag adhesion caused by temperature reduction is prevented from influencing the heat exchange efficiency in the outer side of the spiral heat exchange tube.
Description
Technical Field
The utility model relates to a boiler anti-coking field, concretely relates to circulating fluidized bed is anti-coking device for boiler.
Background
Coking is a common problem in boiler operation, generally, ash particles moving along with flue gas are cooled together with the flue gas due to heat absorption of a heating surface of a water-cooled wall of a hearth, if liquid slag particles are solidified due to temperature reduction before approaching the water-cooled wall or the furnace wall, a loose ash layer is formed when the liquid slag particles are attached to the tube wall of the heating surface, and the loose ash layer is easily removed by soot blowing in operation. When the temperature in the hearth is higher, a part of ash particles reach a molten or semi-molten state, if the part of ash particles are not cooled enough to reach a solidification state before reaching a heated surface, the part of ash particles have higher bonding capability and are easy to adhere to the heated surface or the furnace wall which is flushed by smoke, even reach a molten state, and the ash particles in the molten or semi-molten state and unburned coke are adhered to make coking continuously develop.
However, at present, the limited devices for preventing the coking inside the circulating fluidized bed boiler are available in the market, but the heat exchange tubes inside the heat exchanger do not have good anti-coking means, so that the heat exchange effect is reduced easily after long-time use, and the production operation is affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a circulating fluidized bed boiler of reasonable structural design is with preventing coking device.
The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides an anti-coking device for circulating fluidized bed boiler, includes the boiler, its characterized in that, the lower extreme of boiler is connected with the heat exchanger, the internally mounted of heat exchanger has the spiral heat exchange tube, clearance mechanism has been cup jointed in the outside of spiral heat exchange tube, clearance mechanism includes the first clearance lantern ring and the second clearance lantern ring, the first clearance lantern ring and the second clearance lantern ring pass through the connecting rod and connect, and the second clearance lantern ring is located the top of the first clearance lantern ring, the last surface connection of the second clearance lantern ring has the drive shaft, the side of going up of heat exchanger is run through to the drive shaft, the upper end of drive shaft is connected with the clamp plate, reset spring has been cup jointed in the outside of drive shaft, and reset spring is located the outside of heat exchanger, the top of clamp plate is provided with reciprocal commentaries on classics board, one side of reciprocal commentaries on classics board is connected with driving motor.
Furthermore, one side of the boiler is connected with a spiral feeding bin.
Furthermore, a cyclone separator is arranged above the heat exchanger, and a return bin is connected between the cyclone separator and the boiler.
Furthermore, one end of the spiral heat exchange tube is connected with a water inlet, the other end of the spiral heat exchange tube is connected with a water outlet, and the water inlet and the water outlet are arranged on the outer side of the heat exchanger.
Furthermore, the inner diameter of the first cleaning lantern ring and the inner diameter of the second cleaning lantern ring are both larger than the outer diameter of the spiral heat exchange tube.
Further, the cyclone separator is communicated with the boiler through a return bin.
Furthermore, a spiral feeding rod is arranged inside the spiral feeding bin, and a feeding funnel is arranged at the top of the spiral feeding bin.
Furthermore, the driving motor is connected with the reciprocating rotating plate through a connecting rod, and the connecting rod is far away from the center of the reciprocating rotating plate.
Compared with the prior art, the utility model, have following advantage and effect: the outside lime-ash through clearance mechanism to spiral heat exchange tube is cleared up, drives clearance mechanism through actuating mechanism, can guarantee to scrape the sediment in spiral heat exchange tube working process continuously and handle, prevents that the lime-ash adhesion of temperature reduction from influencing heat exchange efficiency in the outside of spiral heat exchange tube.
Drawings
Fig. 1 is a schematic view of the overall structure of the device of the present invention.
Fig. 2 is a cross-sectional view of the heat exchanger of the present invention.
Fig. 3 is a schematic structural diagram of the cleaning mechanism of the present invention.
Fig. 4 is a schematic structural diagram of the driving mechanism of the present invention.
In the figure: boiler 1, spiral pay-off storehouse 2, cyclone 3, returning charge bin 4, heat exchanger 5, reciprocal commentaries on classics board 6, water inlet 7, delivery port 8, spiral heat exchange tube 9, first clearance lantern ring 10, second clearance lantern ring 11, drive shaft 12, connecting rod 13, reset spring 14, driving motor 15, clamp plate 16.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
Referring to fig. 1 to 4, in the present embodiment, an anti-coking device for a circulating fluidized bed boiler, including a boiler 1, a heat exchanger 5 is connected to a lower end of the boiler 1, a spiral heat exchange tube 9 is installed inside the heat exchanger 5, a cleaning mechanism is sleeved outside the spiral heat exchange tube 9, the cleaning mechanism includes a first cleaning lantern ring 10 and a second cleaning lantern ring 11, inner diameter sizes of the first cleaning lantern ring 10 and the second cleaning lantern ring 11 are both larger than an outer diameter size of the spiral heat exchange tube 9, and the number of the first cleaning lantern ring 10 and the second cleaning lantern ring 11 is equal to the number of vertical pipes of the spiral heat exchange tube 9, a steel wire layer is installed on an inner side wall of the first cleaning lantern ring 10, for cleaning and polishing slag remaining on an outer surface of the spiral heat exchange tube 9, an annular scraper is installed on the inner side wall of the second cleaning lantern ring 11, the ash can be scraped away, the first cleaning lantern ring 10 and the second cleaning lantern ring 11 are connected through a connecting rod 13, and the second cleaning lantern ring 11 is located above the first cleaning lantern ring 10, the reciprocating motor driving plate 12 is connected with a reciprocating motor driving plate 15, and a reciprocating motor driving plate 16 which is connected with the reciprocating motor driving plate 15, and a reciprocating motor driving plate 15 which is connected with the reciprocating motor driving plate 12, and a reciprocating motor driving plate 15 which is located on one side of the reciprocating motor driving plate which is connected with the reciprocating motor driving plate 6, and is connected with the reciprocating motor driving plate 12, and the reciprocating motor driving plate 15 which is connected with the reciprocating motor driving plate 12, and the reciprocating motor driving plate which is located on the reciprocating plate 15, and is connected with the reciprocating motor driving plate 15 which is located on the reciprocating plate which is located on the outer side of the reciprocating motor driving plate 5, and the reciprocating motor driving plate 15.
Referring to fig. 1 to 2, in the embodiment, a spiral feeding bin 2 is connected to one side of a boiler 1, a spiral feeding rod is installed inside the spiral feeding bin 2, and a feeding funnel is arranged at the top of the spiral feeding bin 2. A cyclone separator 3 is arranged above the heat exchanger 5, a return bin 4 is connected between the cyclone separator 3 and the boiler 1, and the cyclone separator 3 is communicated with the boiler 1 through the return bin 4. One end of the spiral heat exchange tube 9 is connected with a water inlet 7, the other end of the spiral heat exchange tube 9 is connected with a water outlet 8, the water inlet 7 and the water outlet 8 are arranged on the outer side of the heat exchanger 5, cooling water is connected through the water inlet 7, and cooling water circulates inside the spiral heat exchange tube 9 to achieve cooling.
The working principle is as follows: after high temperature's ash gas enters into heat exchanger 5 through boiler 1 when producing, the cooling water gets into the inside of flowing through spiral heat exchange tube 9 from water inlet 7 and cools down high temperature ash gas, later discharge through delivery port 8, start driving motor 15, driving motor 15 drives reciprocal rotor plate 6 and is eccentric motion, make reciprocal rotor plate 6 drive clamp plate 16 reciprocate, it slides from top to bottom in the outside of spiral heat exchange tube 9 to drive first clearance lantern ring 10 and second clearance lantern ring 11 through drive shaft 12, steel wire layer through the inside wall installation of first clearance lantern ring 10 polishes the remaining slagging scorification of spiral heat exchange tube 9 surface, annular scraper blade through the inside wall installation of second clearance lantern ring 11 scrapes away the lime-ash, thereby guarantee the continuous slag scraping processing in spiral heat exchange tube 9 course of operation, prevent the lime-ash adhesion of temperature reduction in the outside of spiral heat exchange tube 9, influence heat exchange efficiency.
Those not described in detail in this specification are well within the skill of the art.
In addition, it should be noted that the above contents described in the present specification are only illustrations of the structure of the present invention. All equivalent changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions by those skilled in the art may be made to the described embodiments without departing from the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The utility model provides an anti-coking device for circulating fluidized bed boiler, includes boiler (1), its characterized in that, the lower extreme of boiler (1) is connected with heat exchanger (5), the internally mounted of heat exchanger (5) has spiral heat exchange tube (9), the clearance mechanism has been cup jointed in the outside of spiral heat exchange tube (9), clearance mechanism includes first clearance lantern ring (10) and second clearance lantern ring (11), first clearance lantern ring (10) and second clearance lantern ring (11) are connected through connecting rod (13), and second clearance lantern ring (11) are located the top of first clearance lantern ring (10), the upper surface of second clearance lantern ring (11) is connected with drive shaft (12), drive shaft (12) run through the side of going up of heat exchanger (5), the upper end of drive shaft (12) is connected with clamp plate (16), reset spring (14) have been cup jointed in the outside of drive shaft (12), and reset spring (14) are located the outside of heat exchanger (5), the top of clamp plate (16) is provided with reciprocal commentaries on classics board (6), one side reciprocal commentaries on classics board (6) is connected with driving motor (15).
2. The anti-coking device for the circulating fluidized bed boiler according to claim 1, characterized in that a spiral feeding bin (2) is connected to one side of the boiler (1).
3. The anti-coking device for the circulating fluidized bed boiler according to claim 1 or 2, characterized in that a cyclone separator (3) is arranged above the heat exchanger (5), and a return bin (4) is connected between the cyclone separator (3) and the boiler (1).
4. The anti-coking device for the circulating fluidized bed boiler according to claim 1, characterized in that one end of the spiral heat exchange tube (9) is connected with a water inlet (7), the other end of the spiral heat exchange tube (9) is connected with a water outlet (8), and the water inlet (7) and the water outlet (8) are arranged outside the heat exchanger (5).
5. The anti-coking device for the circulating fluidized bed boiler according to claim 1, characterized in that the inner diameter of the first cleaning collar (10) and the second cleaning collar (11) is larger than the outer diameter of the spiral heat exchange tubes (9).
6. The anti-coking device for the circulating fluidized bed boiler according to claim 3, characterized in that the cyclone separator (3) is communicated with the boiler (1) through a return bin (4).
7. The anti-coking device for the circulating fluidized bed boiler according to claim 2, characterized in that a spiral feeding rod is installed inside the spiral feeding bin (2), and a feeding funnel is arranged at the top of the spiral feeding bin (2).
8. The anti-coking device for the circulating fluidized bed boiler according to claim 1, characterized in that the driving motor (15) is connected with the reciprocating rotary plate (6) through a connecting rod, and the connecting rod is far away from the center position of the reciprocating rotary plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221666570.0U CN217785127U (en) | 2022-06-30 | 2022-06-30 | Anti-coking device for circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221666570.0U CN217785127U (en) | 2022-06-30 | 2022-06-30 | Anti-coking device for circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217785127U true CN217785127U (en) | 2022-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221666570.0U Active CN217785127U (en) | 2022-06-30 | 2022-06-30 | Anti-coking device for circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217785127U (en) |
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2022
- 2022-06-30 CN CN202221666570.0U patent/CN217785127U/en active Active
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