CN205447701U - Be used for middle hybrid system of ultra supercritical boiler water -cooling wall - Google Patents
Be used for middle hybrid system of ultra supercritical boiler water -cooling wall Download PDFInfo
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- CN205447701U CN205447701U CN201521093776.9U CN201521093776U CN205447701U CN 205447701 U CN205447701 U CN 205447701U CN 201521093776 U CN201521093776 U CN 201521093776U CN 205447701 U CN205447701 U CN 205447701U
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Abstract
Provided is a be used for middle hybrid system of ultra supercritical boiler water -cooling wall. Little, the wall thickness of furnace second grade blender specification requires to the plus tolerance pipe in original technique, and its inner chamber space is narrow and small, and the internal plant is made strictly, exist production cycle long, make shortcomings such as difficult, with high costs, that the installation is difficult, the resistance is big. A be used for middle hybrid system of ultra supercritical boiler water -cooling wall which constitutes and includes: inlet collection box (b) (b) 1 (b) (b), one -level blender (b) (b) 2 (b) (b) in the middle of the furnace, one -level blender top arranged that the second grade mixes a collection case (b) (b) 3 (b) (b), four the second grade mix a collection case and arrange on the wall every adjacent two the second grade mix a collection case and leave (b) (b) 100mm (b) (b) expansion space, the one -level blender drawn forth a set of connecting pipe (b) (b) 4 (b) (b), per five of connecting pipe introduce one the second grade mix in the collection case. The utility model discloses be applied to (b) (b) 600MW (b) (b) ultra supercritical boiler. (B, )
Description
Technical field:
This utility model relates to a kind of hybrid system in the middle of ultra-supercritical boiler water-cooling wall, solves the shortcoming such as current ultra supercritical water-cooling wall secondary mixer production cycle length, resistance big, manufacture difficulty, cost height, installation difficulty.
Background technology:
As a example by 600MW ultra-supercritical boiler, burner hearth middle water screen mixing header region mainly comprises following four: (burner hearth secondary mixer 5: each 20 of front-back wall, each 20 of left and right wall, totally 80, specification Φ 356 × 60, SA-335P12, it includes inner sleeve).
Working medium in water-cooling wall pipe enters into burner hearth medial inlet header 6 from bottom water-cooling wall, entered into one-level blender 7 from bottom by threeway after preliminary mixing and mix, one-level blender is arranged on boiler and burner hearth centrage, then connect pipeline 8 by burner hearth secondary mixer entrance and enter into 80 burner hearth secondary mixers from bottom, after mixing again, be flowed into top panelized-tube-wall section.Wherein burner hearth secondary mixer specification is little, wall thickness requires that for plus tolerance pipe, its intracavity space is narrow and small, and internal unit manufacture requirements is strict, there is production cycle length, manufactures the shortcomings such as difficulty, cost height, installation difficulty, resistance are big.
Utility model content:
The purpose of this utility model is to provide a kind of hybrid system in the middle of ultra-supercritical boiler water-cooling wall.
Above-mentioned purpose is realized by following technical scheme:
A kind of hybrid system in the middle of ultra-supercritical boiler water-cooling wall, its composition includes: burner hearth medial inlet header, one-level blender, described one-level blender is arranged above two grades of mixing headers, four described two grade mixing headers are arranged on metope, the most adjacent two described two grade mixing headers leave 100mm expansion space, described one-level blender leads to one group of connecting tube, and every five of described connecting tube is incorporated in a described two grade mixing header.
Described hybrid system in the middle of ultra-supercritical boiler water-cooling wall, two grades of described mixing headers every are all connected to top panelized-tube-wall section by one group of Φ 28.6 × 6.2MWT, 15CrMoG pipe.
Described hybrid system in the middle of ultra-supercritical boiler water-cooling wall, two grades of described mixing headers are internal is light pipe, and two grades of described mixing header tops have large and small tube head, and two grades of described mixing headers are Φ 273 × 55, SA-335P12.
The beneficial effects of the utility model:
1. this utility model is for solving the shortcoming such as current ultra supercritical water-cooling wall secondary mixer production cycle length, resistance big, manufacture difficulty, cost height, installation difficulty, simultaneously ready for independent research ultra supercritical, expand product scope, occupy international market and create favorable conditions.Mixed form in the middle of existing ultra supercritical water-cooling wall is studied, former water-cooling wall secondary mixer is cancelled, is optimized to simple, safe and stable two grade mixing header.
This utility model is as a example by 600MW ultra-supercritical boiler, after optimizing, weight metal 13 tons saved by separate unit boiler, and all it is greatly improved at aspects such as production cycle, manufacturing cost, technology difficulty, materials procurement difficulty and expense, installation difficulty and boiler maintenances, performance and stable operation to boiler have had further raising, and the cost reducing boiler plays vital effect to the competitiveness of product in market.
Two grades of mixing headers of the present utility model simplify a lot relative to secondary mixer internal structure, two grades of mixing header inside are light pipe, there is no internal unit, large and small tube head is only had above header, and collection box material, specification are conventional material, from material purchases, header manufactures difficulty, the cycle is all improved to each side such as manufacturing process.After additionally improving, middle (water) wall circuit is repartitioned, and connecting line is rearranged, make boiler performance and structure more succinct, rationally.
Former water-cooling wall secondary mixer is cancelled by this utility model, is optimized to simple, safe and stable two grade mixing header.
Accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present utility model.
Accompanying drawing 2 is original technical pattern schematic diagram.
In figure: 5 is secondary mixer in original technology, 6 is burner hearth medial inlet header in original technology, and 7 is one-level blender in original technology, and 8 is that in original technology, secondary mixer entrance connects pipeline
Detailed description of the invention:
Embodiment 1:
A kind of hybrid system in the middle of ultra-supercritical boiler water-cooling wall, its composition includes: burner hearth medial inlet header 1, one-level blender 2, described one-level blender is arranged above two grades of mixing headers 3, four described two grade mixing headers are arranged on metope, the most adjacent two described two grade mixing headers leave 100mm expansion space, described one-level blender leads to one group of connecting tube 4, and every five of described connecting tube is incorporated in a described two grade mixing header.
Embodiment 2:
According to the hybrid system in the middle of ultra-supercritical boiler water-cooling wall described in embodiment 1, two grades of described mixing headers every are all connected to top panelized-tube-wall section by one group of Φ 28.6 × 6.2MWT, 15CrMoG pipe.
Embodiment 3:
According to the hybrid system in the middle of ultra-supercritical boiler water-cooling wall described in embodiment 1 or 2, two grades of described mixing headers are internal is light pipe, two grades of described mixing header tops have large and small tube head, and two grades of described mixing headers are Φ 273 × 55, SA-335P12.
Embodiment 4:
As a example by 600MW ultra-supercritical boiler engineering, constant through improving reservation burner hearth medial inlet header and one-level blender, cancel 80 burner hearth secondary mixers, two grades of mixing headers are increased above one-level blender, for alleviating differential expansion between header and buckstay, every face wall is arranged four two grades of mixing headers, its specification is Φ 273 × 55, SA-335P12, the most adjacent two headers stay 100mm expansion space, 20 connecting tubes are drawn from each one-level blender, for reducing flow deviation, require connecting tube length approximation, can not differ bigger, every 5 connecting tubes are incorporated in two grades of mixing headers, every two grades of mixing headers are by 108 Φ 28.6 × 6.2MWT, 15CrMoG pipe is connected to top panelized-tube-wall section.
Claims (3)
1. a hybrid system in the middle of ultra-supercritical boiler water-cooling wall, its composition includes: burner hearth medial inlet header, one-level blender, it is characterized in that: described one-level blender is arranged above two grades of mixing headers, four described two grade mixing headers are arranged on metope, the most adjacent two described two grade mixing headers leave 100mm expansion space, described one-level blender leads to one group of connecting tube, and every five of described connecting tube is incorporated in a described two grade mixing header.
Hybrid system in the middle of ultra-supercritical boiler water-cooling wall the most according to claim 1, is characterized in that: two grades of described mixing headers every are all connected to top panelized-tube-wall section by one group of Φ 28.6 × 6.2MWT, 15CrMoG pipe.
Hybrid system in the middle of ultra-supercritical boiler water-cooling wall the most according to claim 1 and 2, it is characterized in that: two grades of described mixing headers are internal for light pipe, two grades of described mixing header tops have large and small tube head, and two grades of described mixing headers are Φ 273 × 55, SA-335P12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521093776.9U CN205447701U (en) | 2015-12-25 | 2015-12-25 | Be used for middle hybrid system of ultra supercritical boiler water -cooling wall |
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| CN201521093776.9U CN205447701U (en) | 2015-12-25 | 2015-12-25 | Be used for middle hybrid system of ultra supercritical boiler water -cooling wall |
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| CN205447701U true CN205447701U (en) | 2016-08-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526575A (en) * | 2015-12-25 | 2016-04-27 | 哈尔滨锅炉厂有限责任公司 | Water cooled wall middle mixing system applied to ultra-supercritical boiler and improvement method |
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2015
- 2015-12-25 CN CN201521093776.9U patent/CN205447701U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526575A (en) * | 2015-12-25 | 2016-04-27 | 哈尔滨锅炉厂有限责任公司 | Water cooled wall middle mixing system applied to ultra-supercritical boiler and improvement method |
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