CN220892227U - Anti-wear device for coal feeding pipe of circulating fluidized bed boiler - Google Patents
Anti-wear device for coal feeding pipe of circulating fluidized bed boiler Download PDFInfo
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- CN220892227U CN220892227U CN202322406857.0U CN202322406857U CN220892227U CN 220892227 U CN220892227 U CN 220892227U CN 202322406857 U CN202322406857 U CN 202322406857U CN 220892227 U CN220892227 U CN 220892227U
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- Prior art keywords
- wear
- feeding pipe
- coal
- resistant
- coal feeding
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- 239000003245 coal Substances 0.000 title claims abstract description 97
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 239000011819 refractory material Substances 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims 4
- 238000005299 abrasion Methods 0.000 description 13
- 239000000843 powder Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model relates to a coal feeding pipe wear-resistant device of a circulating fluidized bed boiler, which belongs to the technical field of circulating fluidized bed boilers and particularly comprises a coal feeding pipe arranged at the bottom of a coal feeding pipe, wherein the bottom of the coal feeding pipe is provided with a wear-resistant component, the wear-resistant component is arranged at a blanking point of the coal feeding pipe and comprises a sealing box fixed at the bottom of the coal feeding pipe and a plurality of flow-resistant wear-resistant rib plates in the coal feeding pipe, the flow-resistant wear-resistant rib plates are uniformly arranged, and a coal storage gap is formed between the flow-resistant wear-resistant rib plates.
Description
Technical Field
The utility model relates to a coal feeding pipe wear-resistant device of a circulating fluidized bed boiler, and belongs to the technical field of circulating fluidized bed boilers.
Background
The coal feeding pipe is a pipeline for a coal feeder to convey raw coal to a hearth. The vertical drop from the outlet of the coal feeder to the inlet of the coal feeding pipe is about 6 meters, raw coal falls into the inlet of the coal feeding pipe from the outlet of the coal feeder through the vertical coal dropping pipe, larger kinetic energy is obtained under the action of gravity, so that the raw coal generates larger impact force on the bottom of the coal feeding pipe, the raw coal rapidly slides down along the inner wall of the coal feeding pipe under the action of gravity and kinetic energy due to larger inclination angle between the coal feeding pipe and the horizontal plane, the raw coal generates friction cutting on the inner wall of the coal feeding pipe, the abrasion of the coal feeding pipe is aggravated, the original equipment pipeline is made of a steel plate with the thickness of 1Cr18Ni9Ti, the vulnerable part of the equipment is worn through after running for about 1 month, the raw coal is leaked and polluted environment is caused, and the workload of maintenance personnel is increased. Based on the above, it is necessary to invent a wear-resistant device to solve the problem of abrasion of the easily worn part of the coal pipe.
Disclosure of utility model
In order to solve the technical problems in the prior art, the utility model provides the coal pipe anti-wear device of the circulating fluidized bed boiler, which has the advantages of simple structure and reasonable design and can effectively avoid the abrasion of the coal pipe.
In order to achieve the purpose, the technical scheme adopted by the utility model is that the anti-abrasion device for the coal feeding pipe of the circulating fluidized bed boiler comprises the coal feeding pipe arranged at the bottom of the coal feeding pipe, an anti-abrasion component is arranged at the bottom of the coal feeding pipe and arranged at a blanking point of the coal feeding pipe, the anti-abrasion component comprises a sealing box fixed at the bottom of the coal feeding pipe and a plurality of flow-blocking and abrasion-resistant rib plates fixed in the coal feeding pipe, the sealing box is positioned below the coal feeding point at the outer part of the coal feeding pipe and corresponds to the flow-blocking and abrasion-resistant rib plates in the coal feeding pipe, the flow-blocking and abrasion-resistant rib plates are uniformly arranged, and a coal storage gap is formed between the flow-blocking and abrasion-resistant rib plates.
Preferably, the flow-blocking wear-resistant rib plate is a semicircular plate, the semicircular plate is perpendicular to the inner wall of the coal feeding pipe, two sides of the semicircular plate are welded and fixed on the pipe wall of the coal feeding pipe, the height of the flow-blocking wear-resistant rib plate is 5% -7% of the inner diameter of the coal feeding pipe, and the interval distance is the root of the flow-blocking wear-resistant rib plate at which the orthographic projection point of the flow-blocking wear-resistant rib plate falls.
Preferably, the sealing box comprises a bottom plate and side plates fixed on the periphery of the bottom plate, and the tops of the side plates are fixed on the coal feeding pipe.
Preferably, the sealing box is filled with refractory materials.
Preferably, the bottom plate and the side plates are provided with wear-resistant rib plates.
Compared with the prior art, the utility model has the following technical effects: according to the utility model, the plurality of flow-resistant and wear-resistant rib plates and the sealing box are arranged on the coal feeding pipe, and a certain amount of coal powder is stored through the flow-resistant and wear-resistant rib plates and the sealing box, so that the coal powder and the flow-resistant and wear-resistant rib plates form a buffer layer for buffering the coal of the coal feeding pipe, and the abrasion of the coal feeding pipe is reduced; in addition, the sealing box is filled with refractory materials, and the anti-wear secondary protection effect can be achieved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic structural view of the seal case in the present utility model.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1 and 2, the anti-wear device for the coal feeding pipe of the circulating fluidized bed boiler comprises a coal feeding pipe 2 arranged at the bottom of the coal feeding pipe 1, an anti-wear assembly is arranged at the bottom of the coal feeding pipe 2 and arranged at the blanking point of the coal feeding pipe 1, the anti-wear assembly comprises a sealing box 3 fixed at the bottom of the coal feeding pipe 2 and a plurality of flow-blocking and wear-resisting rib plates 4 fixed in the coal feeding pipe, the sealing box 3 is positioned below the coal feeding point at the outer part of the coal feeding pipe and corresponds to the flow-blocking and wear-resisting rib plates 4 in the coal feeding pipe 2, the flow-blocking and wear-resisting rib plates 4 are uniformly arranged, and a coal storage gap is formed between the flow-blocking and wear-resisting rib plates 4.
In the utility model, a plurality of flow-blocking wear-resistant rib plates are arranged at blanking points of the coal feeding pipe, and a sealing box is arranged outside the coal feeding pipe. The flow-resistant and wear-resistant rib plates are uniformly arranged, and gaps are reserved among the flow-resistant and wear-resistant rib plates and are used for storing pulverized coal. After the gaps are filled with the coal powder, the flow-blocking wear-resistant rib plates and the coal powder form a buffer layer for buffering the coal entering the coal feeding pipe so as to reduce the abrasion to the coal feeding pipe. The sealing box is used as a second layer of wear-resistant structure, and plays a secondary protection role after the flow-resistant wear-resistant rib plate and the coal dust form a buffer layer to fail.
The flow-resistant and wear-resistant rib plate 4 is a semicircular plate, the semicircular plate is perpendicular to the inner wall of the coal feeding pipe, two sides of the semicircular plate are welded and fixed on the pipe wall of the coal feeding pipe, the height of the flow-resistant and wear-resistant rib plate 4 is 5% -7% of the inner diameter of the coal feeding pipe, and the interval distance is the distance that the orthographic projection point of the flow-resistant and wear-resistant rib plate falls on the root of the next flow-resistant and wear-resistant rib plate. The number and the height of the semicircular choked flow wear-resistant rib plates are determined by the included angle between the coal feeding pipe and the horizontal line, so that the semicircular channels formed by the plurality of arc choked flow wear-resistant rib plates can store coal seams with certain thickness, and the wear-resistant effect is improved. The sealing box 3 comprises a bottom plate 5 and side plates 6 fixed on the periphery of the bottom plate, and the tops of the side plates 6 are fixed on the coal feeding pipe. Wear-resistant rib plates are arranged on the bottom plate 5 and the side plate 6. The sealing box 3 is filled with a refractory material 7 which can play a role in preventing abrasion and secondary protection.
The foregoing description of the preferred embodiment of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (5)
1. The utility model provides a circulation fluidized bed boiler gives coal pipe abrasionproof device, including setting up the coal pipe that gives in coal pipe bottom, its characterized in that: the anti-wear assembly is arranged at the bottom of the coal feeding pipe and arranged at a blanking point of the coal feeding pipe, and comprises a sealing box fixed at the bottom of the coal feeding pipe and a plurality of flow-blocking wear-resistant rib plates fixed in the coal feeding pipe, wherein the sealing box is positioned below the coal feeding point at the outer part of the coal feeding pipe and corresponds to the flow-blocking wear-resistant rib plates in the coal feeding pipe, and the flow-blocking wear-resistant rib plates are uniformly arranged to form a coal storage gap.
2. The circulating fluidized bed boiler coal feed pipe wear prevention device of claim 1, wherein: the flow-resistant and wear-resistant rib plates are semicircular plates, the semicircular plates are perpendicular to the inner wall of the coal feeding pipe, two sides of each semicircular plate are welded and fixed on the pipe wall of the coal feeding pipe, the height of each flow-resistant and wear-resistant rib plate is 5% -7% of the inner diameter of the coal feeding pipe, and the interval distance is the distance that the orthographic projection point of each flow-resistant and wear-resistant rib plate falls on the root of the next flow-resistant and wear-resistant rib plate.
3. The circulating fluidized bed boiler coal feed pipe wear prevention device of claim 1 or 2, wherein: the sealing box comprises a bottom plate and side plates fixed on the periphery of the bottom plate, and the top of each side plate is fixed at the bottom of the coal feeding pipe.
4. The circulating fluidized bed boiler coal feed pipe wear prevention device of claim 3, wherein: and the sealing box is filled with refractory materials.
5. The circulating fluidized bed boiler coal feed pipe wear prevention device of claim 3, wherein: wear-resisting rib plates are arranged on the bottom plate and the side plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322406857.0U CN220892227U (en) | 2023-09-06 | 2023-09-06 | Anti-wear device for coal feeding pipe of circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322406857.0U CN220892227U (en) | 2023-09-06 | 2023-09-06 | Anti-wear device for coal feeding pipe of circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220892227U true CN220892227U (en) | 2024-05-03 |
Family
ID=90870701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322406857.0U Active CN220892227U (en) | 2023-09-06 | 2023-09-06 | Anti-wear device for coal feeding pipe of circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220892227U (en) |
-
2023
- 2023-09-06 CN CN202322406857.0U patent/CN220892227U/en active Active
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