CN102506414B - 600MW boiler superheater attemperator and desuperheat method - Google Patents
600MW boiler superheater attemperator and desuperheat method Download PDFInfo
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- CN102506414B CN102506414B CN201110341590.0A CN201110341590A CN102506414B CN 102506414 B CN102506414 B CN 102506414B CN 201110341590 A CN201110341590 A CN 201110341590A CN 102506414 B CN102506414 B CN 102506414B
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- attemperator
- stack shell
- inner sleeve
- sparge pipe
- superheater
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Abstract
<b>600MW</bGreat T.GreaT.GT<b> boiler superheater attemperator and desuperheat method.Dog screw on former 600MW boiler superheater attemperator stack shell and supporting screw are external, due to the impact of welded stress, during the fixing welding of external screw easily stack shell occur crackle or poorly sealed, support not in place and produce defective products.The present invention's composition comprises: attemperator stack shell (1), described attemperator stack shell is vertically installed with flute type tubular type desuperheating water sparge pipe (2), locating piece (3) is equipped with in the position be connected with described attemperator stack shell at described flute type tubular type desuperheating water sparge pipe, inner sleeve (4) is equipped with in described attemperator stack shell inside, described inner sleeve is through built-in brace summer (7), and described flute type tubular type desuperheating water sparge pipe is positioned at position outside described attemperator stack shell and outer sleeve for connecting (9).Invention is used for the superheater attemperator of 600MW boiler.</b>
Description
technical field:
invention relates to a kind of for field of boilers, is specifically related to a kind of 600MW boiler superheater attemperator and desuperheat method.
background technology:
adopt one group of dog screw and two groups of supporting screws to ensure mutual position and relative expansion between traditional superheater desuperheater internal cover cylinder and attemperator stack shell, traditional screw fixed form is external screw, namely screw fixes inner sleeve through attemperator stack shell, during this structure welding, due to the impact of postwelding thermal stress, screw and stack shell junction easily crack and cause revealing, or due to welding deformation, screw well can not fix inner sleeve, easily vibrates and destroy attemperator during operation.Dog screw on former 600MW boiler superheater attemperator stack shell and supporting screw are external, due to the impact of welded stress, during the fixing welding of external screw easily stack shell occur crackle or poorly sealed, support not in place and produce defective products, have a strong impact on the reliability of product.
summary of the invention:
the object of invention is to provide a kind of attemperator, and facilitate and remove contamination and overhaul, avoid the 600MW boiler overheating of the Under Thermal Fatigue Damage of stack shell, the present invention also provides this desuperheat method.
above-mentioned object is realized by following technical scheme:
a kind of 600MW boiler superheater attemperator, its composition comprises: attemperator stack shell, described attemperator stack shell is vertically installed with flute type tubular type desuperheating water sparge pipe, locating piece is equipped with in the position be connected with described attemperator stack shell at described flute type tubular type desuperheating water sparge pipe, inner sleeve is equipped with in described attemperator stack shell inside, described inner sleeve is through built-in brace summer, and described flute type tubular type desuperheating water sparge pipe is positioned at position outside described attemperator stack shell and outer sleeve for connecting;
be connected and fixed by built-in supporting screw between described built-in brace summer and described inner sleeve, described outer tube is welded on described attemperator stack shell, between described attemperator stack shell and described inner sleeve, guide pad is housed, limited block is equipped with in described attemperator stack shell inside;
the superheater desuperheat method of described 600MW boiler superheater attemperator is as described below: the tube connector between two-stage superheater arranges above-mentioned attemperator; described attemperator is positioned at the upstream of tube connector along steam flow; water spray pipe end is front; inner sleeve pipe end is rear; when the superheated steam exceeding design temperature flows through attemperator; in attemperator, spray water to reduce the temperature of superheated steam in pipeline, protect the safety of next stage superheater with this.
beneficial effect:
1. the present invention adopts steel high pressure seamless pipe to be attemperator stack shell, inner sleeve is the welded still pipe that steel pipe or steel plate roll, and the Free Thermal of mutual position and axis expands to adopt locating piece, guide pad, limited block and supporting screw to fix to ensure between stack shell and inner sleeve.
the alternate stress that the outer tube joint design of flute type tubular type desuperheating water sparge pipe of the present invention can effectively avoid stack shell to produce at flute type tubular type desuperheating water sparge pipe place because of water spray, avoids the Under Thermal Fatigue Damage of stack shell.
of the present inventionly on attemperator cylindrical shell, be provided with hand hole device, facilitate attemperator and remove contamination and overhaul.
the present invention is that my company personnel's independent design is developed, its form is unique, and for initiating both at home and abroad, my company can have independent intellectual property right completely to it, positive role is played in the raising of this product to my company's attemperator product percent of pass, has the latent value of good economic benefit and market.Through power plant tens, routine test run proves, this product work is safe and reliable, and performance meets boiler operatiopn requirement, reaches purpose of design.
the present invention adopts and to arrange locating piece and limited block in inner sleeve end to ensure the relative position of inner sleeve and attemperator stack shell, prevent inner sleeve from coming off, guide pad is set in the middle part of stack shell simultaneously, built-in supporting screw ensures the relative expansion direction of inner sleeve, stack shell inside is all welded on owing to locating fast, limited block, guide pad, the whole body do not have through-hole, therefore leakage can not be produced, and supporting screw is built-in (being supported on stack shell inwall through inner sleeve), regulate comparatively external easy; This product greatly reduces production difficulty, improves product percent of pass.
the present invention is applied on 600MW boiler heavy wall attemperator, substitute original old-fashioned attemperator, do not produce weld crack and leakage phenomenon more in process of production, overcome this problem existed in prior art completely, positive role is played in the raising of this product to my company's attemperator product percent of pass, has the latent value of good economic benefit and market.Through power plant, test run proves: this attemperator is safe and reliable, performance meets boiler operatiopn requirement, water spraying atomization is respond well, steam-water mixing is even, and stack shell is concentrated without alternate stress and stress and produced, and attemperator produces without resonance, in attemperator, each part thermal expansion is without hindrance, relative position is stablized, and sparge pipe working stability, reaches purpose of design.
accompanying drawing illustrates:
accompanying drawing 1 is the structural representation of this product.
accompanying drawing 2 is A-A direction view of accompanying drawing 1.
detailed description of the invention:
embodiment 1:
a kind of 600MW boiler superheater attemperator, its composition comprises: attemperator stack shell 1, described attemperator stack shell is vertically installed with flute type tubular type desuperheating water sparge pipe 2, locating piece 3 is equipped with in the position be connected with described attemperator stack shell at described flute type tubular type desuperheating water sparge pipe, inner sleeve 4 is equipped with in described attemperator stack shell inside, described inner sleeve is through built-in brace summer 7, and described flute type tubular type desuperheating water sparge pipe is positioned at position outside described attemperator stack shell and outer sleeve for connecting 9.
embodiment 2:
a kind of 600MW boiler superheater attemperator, its composition comprises: attemperator stack shell 1, described attemperator stack shell is vertically installed with flute type tubular type desuperheating water sparge pipe 2, locating piece 3 is equipped with in the position being positioned at described attemperator stack shell inside at the outer wall of described flute type tubular type desuperheating water sparge pipe, inner sleeve 4 is equipped with in described attemperator stack shell inside, one group of guide pad 5 is housed between described attemperator stack shell and described inner sleeve, one group of limited block 6 is equipped with in the inner one end of described attemperator stack shell, described inner sleeve is through built-in brace summer 7, described attemperator stack shell side connects hand hole device 8, described flute type tubular type desuperheating water sparge pipe is positioned at the position outer sleeve for connecting 9 outside described attemperator stack shell.
embodiment 3:
600MW boiler superheater attemperator described in embodiment 1, is connected and fixed 10 by built-in supporting screw between described built-in brace summer and described inner sleeve, and described outer tube is welded on described attemperator stack shell.
a kind of 600MW boiler superheater attemperator, steel high pressure seamless pipe is adopted to be attemperator stack shell, inner sleeve is the welded still pipe that steel pipe or steel plate roll, adopt one group of locating piece between stack shell and inner sleeve, one group of guide pad, one group of limited block and one group of supporting screw fixes, flute type tubular type desuperheating water sparge pipe is furnished with before inner sleeve, flute type tubular type desuperheating water sparge pipe one end outer tube pipe joint be welded on attemperator stack shell is fixed, and the built-in brace summer of the flute type tubular type desuperheating water sparge pipe other end is fixed.
embodiment 4:
600MW boiler superheater desuperheat method described in embodiment 1; the attemperator of this product is arranged on the tube connector between two-stage superheater; be positioned at the upstream of tube connector along steam flow; water spray pipe end is front; inner sleeve pipe end is rear; when the superheated steam exceeding design temperature flows through attemperator, the temperature spraying water to reduce superheated steam in pipeline under the control of operator in attemperator protects the safety of next stage superheater with this.
embodiment 5:
600MW boiler superheater attemperator described in embodiment 1, on the tube connector being arranged between two-stage superheater of this product, be positioned at the upstream of tube connector along steam flow, along vapor flow direction water spray pipe end front, inner sleeve pipe end is rear, inner at attemperator stack shell, inner sleeve two ends are welded with one group of locating piece and one group of limited block respectively, inner sleeve is provided with guide pad and supporting screw, locating piece and attemperator stack shell inwall, inner sleeve welds the stiff end as inner sleeve mutually, the spacing between guide pad guarantee inner sleeve and stack shell is welded with in the middle part of inner sleeve, one group of built-in supporting screw is provided with at inner sleeve end, limited block is welded with inside the attemperator stack shell apart from inner sleeve end certain distance, prevent inner sleeve from coming off.Sparge pipe adopts sleeve structure, and arrival end adopts sleeve structure to be welded on as stiff end on attemperator outer wall, and the seat supports that the employing of water spray bottom can be movable is vertically on attemperator stack shell inwall.
Claims (1)
1.
a kind of 600MW boiler superheater attemperator, its composition comprises: attemperator stack shell, it is characterized in that: described attemperator stack shell is vertically installed with flute type tubular type desuperheating water sparge pipe, locating piece is equipped with in the position be connected with described attemperator stack shell at described flute type tubular type desuperheating water sparge pipe, inner sleeve is equipped with in described attemperator stack shell inside, described inner sleeve is through built-in brace summer, and described flute type tubular type desuperheating water sparge pipe is positioned at position outside described attemperator stack shell and outer sleeve for connecting;
be connected and fixed by built-in supporting screw between described built-in brace summer and described inner sleeve, described outer tube is welded on described attemperator stack shell, between described attemperator stack shell and described inner sleeve, guide pad is housed, limited block is equipped with in described attemperator stack shell inside;
the superheater desuperheat method of described 600MW boiler superheater attemperator is as described below: the tube connector between two-stage superheater arranges above-mentioned attemperator, described attemperator is positioned at the upstream of tube connector along steam flow, water spray pipe end is front, inner sleeve pipe end is rear, when the superheated steam exceeding design temperature flows through attemperator, in attemperator, spray water to reduce the temperature of superheated steam in pipeline, protect the safety of next stage superheater with this;
along vapor flow direction water spray pipe end front, inner sleeve pipe end is rear, inner at attemperator stack shell, inner sleeve two ends are welded with one group of locating piece and one group of limited block respectively, inner sleeve is provided with guide pad and supporting screw, locating piece and attemperator stack shell inwall, inner sleeve welds the stiff end as inner sleeve mutually, the spacing between guide pad guarantee inner sleeve and stack shell is welded with in the middle part of inner sleeve, one group of built-in supporting screw is provided with at inner sleeve end, limited block is welded with inside the attemperator stack shell apart from inner sleeve end certain distance, prevent inner sleeve from coming off, sparge pipe adopts sleeve structure, arrival end adopts sleeve structure to be welded on attemperator outer wall as stiff end, the seat supports that bottom water spray, employing can be movable is vertically on attemperator stack shell inwall.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110341590.0A CN102506414B (en) | 2011-11-02 | 2011-11-02 | 600MW boiler superheater attemperator and desuperheat method |
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| CN201110341590.0A CN102506414B (en) | 2011-11-02 | 2011-11-02 | 600MW boiler superheater attemperator and desuperheat method |
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| CN102506414A CN102506414A (en) | 2012-06-20 |
| CN102506414B true CN102506414B (en) | 2015-11-04 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748747A (en) * | 2012-07-19 | 2012-10-24 | 无锡华光锅炉股份有限公司 | Positioning device for attemperator lining hybrid tube |
| CN111981466A (en) * | 2019-05-22 | 2020-11-24 | 哈尔滨锅炉厂有限责任公司 | Power station boiler desuperheater |
| CN110345467A (en) * | 2019-07-31 | 2019-10-18 | 上海锅炉厂有限公司 | A kind of desuperheater internal cover drum supporting device and installation method |
Citations (6)
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|---|---|---|---|---|
| US4421069A (en) * | 1982-09-07 | 1983-12-20 | Foster Wheeler Energy Corporation | Desuperheater spray liner assembly |
| EP1965132A1 (en) * | 2007-02-27 | 2008-09-03 | Sa Cockerill Maintenance Et Ingenierie | Desuperheater |
| CN201662056U (en) * | 2009-11-30 | 2010-12-01 | 上海锅炉厂有限公司 | Water spraying device of desuperheater |
| CN101907290A (en) * | 2010-08-20 | 2010-12-08 | 江苏火电电力设备制造有限公司 | Overall regulation and water spraying atomization steam temperature reducing device |
| CN201764490U (en) * | 2010-09-02 | 2011-03-16 | 上海锅炉厂有限公司 | Inner sleeve apparatus for attemperator |
| CN202303340U (en) * | 2011-11-02 | 2012-07-04 | 哈尔滨锅炉厂有限责任公司 | 600 MW boiler superheater desuperheater |
-
2011
- 2011-11-02 CN CN201110341590.0A patent/CN102506414B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4421069A (en) * | 1982-09-07 | 1983-12-20 | Foster Wheeler Energy Corporation | Desuperheater spray liner assembly |
| EP1965132A1 (en) * | 2007-02-27 | 2008-09-03 | Sa Cockerill Maintenance Et Ingenierie | Desuperheater |
| CN201662056U (en) * | 2009-11-30 | 2010-12-01 | 上海锅炉厂有限公司 | Water spraying device of desuperheater |
| CN101907290A (en) * | 2010-08-20 | 2010-12-08 | 江苏火电电力设备制造有限公司 | Overall regulation and water spraying atomization steam temperature reducing device |
| CN201764490U (en) * | 2010-09-02 | 2011-03-16 | 上海锅炉厂有限公司 | Inner sleeve apparatus for attemperator |
| CN202303340U (en) * | 2011-11-02 | 2012-07-04 | 哈尔滨锅炉厂有限责任公司 | 600 MW boiler superheater desuperheater |
Non-Patent Citations (1)
| Title |
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| 大港电厂喷管式减温器结构特点分析;温伯金 等;《北京电力技术》;19781231(第12期);第39至45页 * |
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| CN102506414A (en) | 2012-06-20 |
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