CN102444889B - For clamp and the making and installation method of fixing castable - Google Patents
For clamp and the making and installation method of fixing castable Download PDFInfo
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- CN102444889B CN102444889B CN201110432109.9A CN201110432109A CN102444889B CN 102444889 B CN102444889 B CN 102444889B CN 201110432109 A CN201110432109 A CN 201110432109A CN 102444889 B CN102444889 B CN 102444889B
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Abstract
For clamp and the making and installation method of fixing castable.Along with the minimizing of state coal resource and the adjustment of national environmental protection policy, the coal that generating plant pulverized coal boiler uses and ature of coal face critical shortage, and thus very wide to fuel tolerance CFBB is developed.A kind of clamp for fixing castable, its composition comprises: bend with steel plate and make U-shaped pipe clamp (1), described U-shaped pipe clamp two end points have curved segment (2) and straight section (3) in turn, described clamp connects pitching layer (4) or is wound around ceramic fibre ply of paper, and the material of described clamp is 20 or 12Cr1MoV or 1Cr18Ni9Ti or 1Cr20Ni14Si2.The present invention is used for the CFBB of the industries such as boiler, iron and steel, building materials and petrochemical industry.
Description
technical field:
invention relates to a kind of for boiler fitting, is specifically related to a kind of clamp for fixing castable and making and installation method.
background technology:
along with the minimizing of state coal resource and the adjustment of national environmental protection policy, the coal that generating plant pulverized coal boiler uses and ature of coal face critical shortage, and thus very wide to fuel tolerance CFBB is developed.
since twentieth century eighties, its excellent environmental emission characteristic is demonstrated in recirculating fluidized bed (CFB) boiler technology commercialization process, its cost of polluting control is that other technology cannot be equal at present, but not there is obvious superiority reaching in higher power supplying efficiency, therefore improve the pressure and temperature of steam and increase its capacity and become extensive common recognition.First CFBB is the maximization problem of boiler as the use of station boiler, and the wearing and tearing of metal parts and refractory material are one of the main reasons of its development of puzzlement.
adapt to the needs of CFB boiler maximization design, along with the raising of unit capacity and parameter, CFB Boiler Furnace domestic demand is furnished with superheater and the reheater tube panel of some, but because the Matter Transfer in CFBB and back-mixing make the wearing and tearing of stove internal heating surface more serious, for alleviating wearing and tearing, at tube panel bottom place's injection through walls abrasion-proof and refractory pouring material.In CFB boiler, usually adopt cylindrical pin or Y type in order to fixing castable, but along with the raising of unit capacity, medium temperature and tube panel wall temperature constantly increase, the material of tube panel also needs correspondingly to carry shelves.Still cylindrical pin can be adopted when the tubing of tube panel is 20G or 12Cr1MoVG, but along with improving constantly of wall temperature, easily crack due to when cylindrical pin and tube welding when tubing in tube panel is T91 or TP304, TP347, a kind of new construction must be adopted with fixing castable.
first CFBB is the maximization problem of boiler as the use of station boiler, and wearing and tearing are one of the main reasons of its development of puzzlement.The particularly domestic large-size circulating fluidized bed external bed structure eliminated in imported technology in recent years, and in stove, increase superheater, reheater screen.In stove screen lower end and wear water-cooling wall region due to its wearing and tearing and more seriously need lay wearing-proof refractory material.What low-temperature zone tube panel heating surface pipe adopted is carbon steel or low alloy steel material, on pipe, usually welds column type pin in order to fixing high-abrasive material.But high temperature section tube panel is T91 or TP304, TP347 due to its tubing, due to the unstability of its welding, easily cracks on pipe when pin and tube welding.
summary of the invention:
it is simple, easy for installation that the object of inventing is to provide a kind of structure, and low cost of manufacture, adaptability is widely used in clamp and the installation method of fixing castable.
above-mentioned object is realized by following technical scheme:
for the clamp of fixing castable, its composition comprises: bend with steel plate and make U-shaped pipe clamp, described U-shaped pipe clamp two end points have curved segment and straight section in turn, described clamp connects pitching layer or is wound around ceramic fibre ply of paper, and the material of described clamp is 20 or 12Cr1MoV or 1Cr18Ni9Ti or 1Cr20Ni14Si2.
a kind of making and installation method of the clamp for fixing castable, first diameter and the length selection steel plate of clamp is selected according to the external diameter of pipe and the thickness of required high-abrasive material, steel plate is bent and makes U-shaped, straight section is prepared after curved segment is prepared at U-shaped two ends, pitching or winding ceramic fiber paper on pipe, then by clamp and tube grip.
beneficial effect:
1. the fuel tolerance of CFB boiler is wide, conventional raw coal can be used, also can use gangue that colliery washing gets off, wash the colms such as middle coal, coal slime, the inferior fuel such as petroleum coke and gas-making cinder can also be used, changeable, the direct combusted proportion high of raw coal of China's boiler coal supply can be met preferably.Structure of the present invention is simple, easy for installation, low cost of manufacture, and adaptability is extensive, can be used for the tube panel of multiple CFB boiler.
the invention solves the fixation problem of high temperature section tube panel abrasion-proof and refractory pouring material, also can be used for low-temperature zone heating surface, low cost of manufacture, economic benefits, a simple structure simultaneously, captured a technical bottleneck, solved unsolved problem always.
the good environmental protection of boiler, can realize high-efficiency desulfurization in stove, and nitrogen oxide (NOx) discharges low, meets national requirements for environmental protection; Be easy to operation, flameholding safety, efficiency of combustion is high.The load range of boiler of CFB boiler is large, regulating than reaching 4:1, can adapt to boiler band base load, also can carry out significantly peak regulation, is particularly suitable for daily load and changes large area.The lime-ash of CFB boiler can fully utilize, and CFBB belongs to low-temperature burning, and lime-ash activity is good, is directly used in construction material as cement admixture, brickmaking etc.CFBB, can embody its great economy, society and environmental benefit effectively, obtains the attention of country, has been classified as the industrial development direction of country's Tenth Five-Year Plan Period and 2015 planning.At present from international and domestic just the multiple coal-fired new technology of active development, in following 20 years, have Combustion technology of circulating fluidized only and be only and really can accepted extensively by domestic and apply.The invention solves pipe clamp martensite steel or stainless steel material in CFB boiler and after welding, easily go out the problem of crackle.
this product also can be used for low-temperature zone tube panel.Come off when tube panel there being pin or have pin to need also can adopt this kind of clamp during encryption, the destruction avoiding rear repair welding pin may produce pipe and even booster affect the security of operation of boiler.
the present invention is easy for installation, high-abrasive material construction is simple, and the engineering that now existing multiple stage adopts clamp to fix high-abrasive material puts into operation, and shutdown maintenance finds that high-abrasive material is fixed intact, does not have obscission.
the clamp structure of fixing high-abrasive material of the present invention is simple, it is extremely convenient to manufacture, install and use, and can extensively promote; And can not only be applied in CFBB, also can be applicable to other industry.
accompanying drawing illustrates:
accompanying drawing 1 is the structural representation of this product.
accompanying drawing 2 is schematic diagrames that accompanying drawing 1 is applied in high temperature section tube panel clamp and high-abrasive material.
accompanying drawing 3 is that the C-C of accompanying drawing 2 is to sectional view.
detailed description of the invention:
embodiment 1:
a kind of clamp for fixing castable, its composition comprises: round steel or steel plate, described round steel or steel plate bend and make U-shaped pipe clamp 1, described U-shaped pipe clamp two end points have curved segment 2 and straight section 3 in turn, form clamp by described U-shaped pipe clamp, bend pipe and straight tube, described clamp connects pitching layer 4 or is wound around ceramic fibre ply of paper.The material of described clamp is 20 or 12Cr1MoV or 1Cr18Ni9Ti or 1Cr20Ni14Si2.Extremely simple.
embodiment 2:
for a making and installation method for the clamp of fixing castable, first select diameter and the length selection steel plate of clamp according to the external diameter of pipe 5 and the thickness of required high-abrasive material, first steel plate is bent and make U-shaped, after curved segment is prepared at U-shaped two ends, prepare straight section.
pitching or winding ceramic fiber paper on pipe 5, then by clamp and tube grip.
Claims (1)
1.
a kind of making and installation method of the clamp for fixing castable, first diameter and the length selection steel plate of clamp is selected according to the external diameter of pipe and the thickness of required high-abrasive material, it is characterized in that: steel plate is bent and makes U shape, straight section is prepared after curved segment is prepared at U shape two ends, pitching or winding ceramic fiber paper on pipe, then by clamp and tube grip;
the clamp for fixing castable that said method obtains, its composition comprises: bend with steel plate and make U shape pipe clamp, described U shape pipe clamp two end points have curved segment and straight section in turn, described clamp connects pitching layer or is wound around ceramic fibre ply of paper, and the material of described clamp is 20 or 12Cr1MoV or 1Cr18Ni9Ti or 1Cr20Ni14Si2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110432109.9A CN102444889B (en) | 2011-12-21 | 2011-12-21 | For clamp and the making and installation method of fixing castable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110432109.9A CN102444889B (en) | 2011-12-21 | 2011-12-21 | For clamp and the making and installation method of fixing castable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102444889A CN102444889A (en) | 2012-05-09 |
| CN102444889B true CN102444889B (en) | 2015-10-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110432109.9A Active CN102444889B (en) | 2011-12-21 | 2011-12-21 | For clamp and the making and installation method of fixing castable |
Country Status (1)
| Country | Link |
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| CN (1) | CN102444889B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425326B (en) * | 2016-11-30 | 2018-05-11 | 东方电气集团东方锅炉股份有限公司 | A kind of bainitic steel or martensite steel membrane panel bending method in a row |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB381692A (en) * | 1931-09-15 | 1932-10-13 | Harold James Green | Improvements in furnace walls, arches and the like |
| JP2000513084A (en) * | 1997-04-21 | 2000-10-03 | フィッシャーヴェルケ アルツール フィッシャー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト | Tube shell |
| CN201121878Y (en) * | 2007-09-28 | 2008-09-24 | 中国铝业股份有限公司 | Circulating fluidized bed boiler abrasion-proof material pin connection structure |
| CN201610882U (en) * | 2009-11-30 | 2010-10-20 | 上海锅炉厂有限公司 | Y-shaped pin for increasing contact area of wear-resistant, refractory and heat-insulating material for fixation |
| KR20110002726U (en) * | 2009-09-11 | 2011-03-17 | 김문찬 | Fixing Device For Pipe |
| CN201973706U (en) * | 2010-12-17 | 2011-09-14 | 四川川锅锅炉有限责任公司 | Boot type abrasion-resistant platen superheater |
-
2011
- 2011-12-21 CN CN201110432109.9A patent/CN102444889B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB381692A (en) * | 1931-09-15 | 1932-10-13 | Harold James Green | Improvements in furnace walls, arches and the like |
| JP2000513084A (en) * | 1997-04-21 | 2000-10-03 | フィッシャーヴェルケ アルツール フィッシャー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト | Tube shell |
| CN201121878Y (en) * | 2007-09-28 | 2008-09-24 | 中国铝业股份有限公司 | Circulating fluidized bed boiler abrasion-proof material pin connection structure |
| KR20110002726U (en) * | 2009-09-11 | 2011-03-17 | 김문찬 | Fixing Device For Pipe |
| CN201610882U (en) * | 2009-11-30 | 2010-10-20 | 上海锅炉厂有限公司 | Y-shaped pin for increasing contact area of wear-resistant, refractory and heat-insulating material for fixation |
| CN201973706U (en) * | 2010-12-17 | 2011-09-14 | 四川川锅锅炉有限责任公司 | Boot type abrasion-resistant platen superheater |
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| Publication number | Publication date |
|---|---|
| CN102444889A (en) | 2012-05-09 |
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