CN205014325U - 630 steam condition boiler water wall more than DEG C - Google Patents
630 steam condition boiler water wall more than DEG C Download PDFInfo
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- CN205014325U CN205014325U CN201520583080.8U CN201520583080U CN205014325U CN 205014325 U CN205014325 U CN 205014325U CN 201520583080 U CN201520583080 U CN 201520583080U CN 205014325 U CN205014325 U CN 205014325U
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Abstract
The utility model relates to a 630 steam condition boiler water wall more than DEG C, include the tube panel that forms by the body concatenation side by side of N root, its characterized in that: be equipped with a fin respectively in the left and right sides of every root canal body, two fin welded connection of butt joint are gone up to two adjacent root canals body. Adopt the utility model discloses afterwards, can reduce boiler water wall and make welding quantity, improve quality reliability, reduce boiler manufacturing cost, the butt joint weld bond is managed to the nickel base alloys water -cooling wall that the power plant building site only has the incone1617 type need not weld after heat treatment, only has the welding between this type nickel base alloys band steel. In the power plant building site, nickel base alloys small -bore pipe butt weld need not preheat and weld after heat treatment.
Description
Technical field
The utility model relates to a kind of water-cooling wall for more than 630 DEG C steam parameter super (super-) critical boilers.
Background technology
More than 630 DEG C on steam parameter super (super-) critical boiler, need the super (super-) critical boiler water wall assembly manufactured with the steel T91/T92 etc. of 9-12%Cr martensitic structure.During fabrication, because martensite steel intensity is high, plasticity and toughness reduce, and therefore, when structural stress is larger, the angle welding of band steel and pipe easily occurs crackle.For ensureing welding quality and security of operation, the weld seam welded needs weld preheating and post weld heat treatment.Even if carry out preheating and post weld heat treatment, still there is a certain proportion of weld seam and easily occur crackle.In order to improve the quality of products, guarantee the safe and reliable of product export, need to increase flaw detection dynamics and reclamation work, greatly improving manufacturing cost.
Summary of the invention
The technical problems to be solved in the utility model is: reduce and weld martensite steel, improves one-pass finished rate, improves the quality of products and reduce manufacturing cost.
In order to solve the problems of the technologies described above, the technical solution of the utility model there is provided a kind of more than 630 DEG C steam parameter boiler water walls, comprise the tube panel be spliced by N root body side by side, it is characterized in that: be respectively equipped with a fin in the left and right sides of every root body, the two panels fin that adjacent two bodys dock is welded to connect.
Preferably, the length of described fin is 5-10mm.
Preferably, the steel pipe of the identical or close inconel617 class austenite structure of weld diameter is distinguished in the top and bottom of all bodys.
Preferably, the band steel of inconel617 class austenite structure is welded respectively in the both sides of described tube panel.
Preferably, the band steel of the identical or close inconel617 class austenite structure of weld diameter is distinguished in the top and bottom of described band steel.
After adopting the utility model, boiler water wall manufacture welding quantity can be reduced, improve reliability, reduce boiler manufacture cost, power plant building site only has inconel617 type not need the nickel-base alloy water screen tube docking weld bond of post weld heat treatment, only has the welding between the type nickel-base alloy band steel.In power plant building site, nickel-base alloy Butt Weld of Small Bore Pipes does not need preheating and post weld heat treatment.
Accompanying drawing explanation
Fig. 1 is the top view of the tube panel in the utility model;
Fig. 2 is the front view of the tube panel in the utility model;
Fig. 3 is the schematic diagram of the body with fin.
Detailed description of the invention
For making the utility model become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
The connecting method of the tube panel of a kind of more than 630 DEG C steam parameter boiler water walls that the utility model provides is that pipe is directly connected with pipe, and pipe docks with pipe the form all adopting and weld, thus forms weld seam 4.
As shown in Figure 1 and Figure 2 above, pipe is the body 2 with fin, is namely furnished with the fin of 5-10mm respectively in 180 ° of symmetric positions of body 2, as shown in Figure 2.Pipe material therefor is the 9-12%Cr steel such as T91/T92.
Weld the band steel 1 of inconel617 class austenite structure respectively in the both sides of tube panel, when this austenite material metal temperature is between 550-675 DEG C, linear expansion coefficient, at 12-17, does not need post weld heat treatment.
The steel pipe 3 of the pipe top and bottom of the water-cooling wall provided at the utility model inconel617 class austenite structure of the 100-150mm that weld diameter is identical or close respectively, when this austenite material metal temperature is between 550-675 DEG C, linear expansion coefficient, at 12-17, does not need post weld heat treatment.In like manner weld the band steel 1 of the inconel617 class austenite structure of 100-150mm respectively at fin upper and lower side, when this austenite material metal temperature is between 550-675 DEG C, linear expansion coefficient, at 12-17, does not need post weld heat treatment.
Claims (5)
1. more than 630 DEG C steam parameter boiler water walls, comprise the tube panel be spliced by N root body side by side (2), it is characterized in that: in the left and right sides of every root body (2) respectively with a fin, the two panels fin of the upper docking of adjacent two bodys (2) is welded to connect.
2. a kind of more than 630 DEG C steam parameter boiler water walls as claimed in claim 1, is characterized in that: the width of described fin is 5-10mm.
3. a kind of more than 630 DEG C steam parameter boiler water walls as claimed in claim 1, is characterized in that: the steel pipe (3) distinguishing the identical or close inconel617 class austenite structure of weld diameter in the top and bottom of all bodys (2).
4. a kind of more than 630 DEG C steam parameter boiler water walls as claimed in claim 1, is characterized in that: the band steel welding inconel617 class austenite structure in the both sides of described tube panel respectively.
5. a kind of more than 630 DEG C steam parameter boiler water walls as claimed in claim 4, is characterized in that: the band steel distinguishing the identical or close inconel617 class austenite structure of weld width in the top and bottom of described fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520583080.8U CN205014325U (en) | 2015-08-05 | 2015-08-05 | 630 steam condition boiler water wall more than DEG C |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520583080.8U CN205014325U (en) | 2015-08-05 | 2015-08-05 | 630 steam condition boiler water wall more than DEG C |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205014325U true CN205014325U (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520583080.8U Active CN205014325U (en) | 2015-08-05 | 2015-08-05 | 630 steam condition boiler water wall more than DEG C |
Country Status (1)
| Country | Link |
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| CN (1) | CN205014325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425326A (en) * | 2016-11-30 | 2017-02-22 | 东方电气集团东方锅炉股份有限公司 | Bainite steel or martensite steel membrane type wall tube panel bending method |
-
2015
- 2015-08-05 CN CN201520583080.8U patent/CN205014325U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425326A (en) * | 2016-11-30 | 2017-02-22 | 东方电气集团东方锅炉股份有限公司 | Bainite steel or martensite steel membrane type wall tube panel bending method |
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| C14 | Grant of patent or utility model | ||
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