CN203068499U - Wear-resistant high-temperature-resistant coal feeding pipe for circulating fluidized bed boiler - Google Patents
Wear-resistant high-temperature-resistant coal feeding pipe for circulating fluidized bed boiler Download PDFInfo
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- CN203068499U CN203068499U CN 201320074227 CN201320074227U CN203068499U CN 203068499 U CN203068499 U CN 203068499U CN 201320074227 CN201320074227 CN 201320074227 CN 201320074227 U CN201320074227 U CN 201320074227U CN 203068499 U CN203068499 U CN 203068499U
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- pipe
- resistant
- wear
- coal
- feeding tube
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Abstract
The utility model discloses a wear-resistant high-temperature-resistant coal feeding pipe for a circulating fluidized bed boiler. The coal feeding pipe comprises a pipeline which is divided into a front pipe and a rear pipe, wherein the thickness of the front pipe is not less than 40mm, the thickness of the rear pipe is not less than 25mm, and the front pipe and the rear pipe are connected together by means of welding. The coal feeding pipe disclosed by the utility model effectively overcomes the existing defects of the feeding pipe and has the advantages of high temperature resistance and wear resistance.
Description
Technical field
The utility model relate to a kind of in the burner hearth device of coal supply, more particularly, be a kind ofly to enter one section preceding 1.6 meters long Wear-resistant, high-temperature resistant coal-feeding tube of burner hearth for CFBB.
Background technology
At present, coal-fired power plant's CFBB is to make of the 1Cr18Ni9Ti stainless steel of 10 millimeters thick toward the coal-feeding tube of the interior coal supply of burner hearth, and during boiler operatiopn, coal-feeding tube front end temperature height causes front bottom end liner plate distortion projection, can influence the direction of coal stream; Coal stream directly impacts bottom liner plate and the top liner plate of projection, causes wearing and tearing, coal flow the corrosion resistant plate on base plate and top is worn out after, leak the water screen tube of coal-feeding tube periphery is worn out again, influence the normal operation of boiler.
The utility model content
The utility model aims to provide a kind of high temperature resistant, anti abrasive a kind of Wear-resistant, high-temperature resistant coal-feeding tube for CFBB.
The technical solution of the utility model is: a kind of Wear-resistant, high-temperature resistant coal-feeding tube for CFBB comprises pipeline, wherein, pipe and back pipe before this pipeline is divided into, before the thickness of pipe be not less than 40mm, the thickness of back pipe is not less than 25mm, between the preceding Guan Yuhou pipe by being welded together.
Above-mentioned a kind of Wear-resistant, high-temperature resistant coal-feeding tube for CFBB, the material of preceding pipe adopts 1Cr25Ni20Si2.
Above-mentioned a kind of Wear-resistant, high-temperature resistant coal-feeding tube for CFBB, the material of back pipe adopts 3Cr18Ni4Mo2
Above-mentioned a kind of Wear-resistant, high-temperature resistant coal-feeding tube for CFBB, preceding pipe and back pipe be casting respectively.
Above-mentioned a kind of Wear-resistant, high-temperature resistant coal-feeding tube for CFBB, the welding of A507 welding rod is adopted in the welding between preceding pipe and the back pipe.
The utility model adopts above-mentioned structure, have high temperature resistant and anti-wear performance is good especially, the distinguishing feature of long service life by the coal-feeding tube that adopts new material, new technology to make, can avoid fully after coming into operation having improved the economic benefit of power plant greatly because the distortion of coal-feeding tube and erosive wear water screen tube make water screen tube leak the situation that causes shutdown of boiler, influences the normal operation of generating set.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the vertical view of Fig. 1.
Among the figure: pipeline 2,21 is preceding pipe, and 22 is the back pipe.
The specific embodiment
As shown in Figure 1, 2, a kind of Wear-resistant, high-temperature resistant coal-feeding tube for CFBB comprises pipeline 2, pipe 21 and back pipe 22 before this pipeline 2 is divided into, before pipe 21 thickness be not less than 40mm, the thickness of back pipe 22 is not less than 25mm, between preceding pipe 21 manages 22 with the back by being welded together; The material of preceding pipe 21 adopts 1Cr25Ni20Si2; The material of back pipe 22 adopts 3Cr18Ni4Mo2; Preceding pipe 21 and back pipe 22 difference castings; Welding between preceding pipe 21 and the back pipe 22 adopts the A507 welding rod to weld.
Claims (5)
1. Wear-resistant, high-temperature resistant coal-feeding tube that is used for CFBB, comprise pipeline (2), it is characterized in that: this pipeline (2) is divided into preceding pipe (21) and back pipe (22), the thickness of preceding pipe (21) is not less than 40mm, the thickness of back pipe (22) is not less than 25mm, and manage between (22) by being welded together preceding pipe (21) and back.
2. require described a kind of Wear-resistant, high-temperature resistant coal-feeding tube for CFBB according to claim 1, it is characterized in that: the material of preceding pipe (21) adopts 1Cr25Ni20Si2.
3. a kind of Wear-resistant, high-temperature resistant coal-feeding tube for CFBB according to claim 1 is characterized in that: the material employing 3Cr18Ni4Mo2 of back pipe (22).
4. require described a kind of Wear-resistant, high-temperature resistant coal-feeding tube for CFBB according to claim 1, it is characterized in that: preceding pipe (21) and back pipe (22) be casting respectively.
5. require described a kind of Wear-resistant, high-temperature resistant coal-feeding tube for CFBB according to claim 1, it is characterized in that: the welding of A507 welding rod is adopted in the welding between preceding pipe (21) and the back pipe (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320074227 CN203068499U (en) | 2013-02-17 | 2013-02-17 | Wear-resistant high-temperature-resistant coal feeding pipe for circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320074227 CN203068499U (en) | 2013-02-17 | 2013-02-17 | Wear-resistant high-temperature-resistant coal feeding pipe for circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203068499U true CN203068499U (en) | 2013-07-17 |
Family
ID=48767278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320074227 Expired - Fee Related CN203068499U (en) | 2013-02-17 | 2013-02-17 | Wear-resistant high-temperature-resistant coal feeding pipe for circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203068499U (en) |
-
2013
- 2013-02-17 CN CN 201320074227 patent/CN203068499U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20180217 |