CN103062752B - For the thermal insulation structure of combustion engine waste heat boiler wall pipe - Google Patents
For the thermal insulation structure of combustion engine waste heat boiler wall pipe Download PDFInfo
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- CN103062752B CN103062752B CN201210590311.9A CN201210590311A CN103062752B CN 103062752 B CN103062752 B CN 103062752B CN 201210590311 A CN201210590311 A CN 201210590311A CN 103062752 B CN103062752 B CN 103062752B
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- wall pipe
- heat
- thermal insulation
- preservation cotton
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Abstract
The present invention relates to the thermal insulation structure for combustion engine waste heat boiler wall pipe, it is characterized in that: at three layers, the place through walls of high-temperature steam wall pipe insulating; One of insulating (5) is made up of elastic metallic net parcel heat-preservation cotton, in the form of a ring, its internal diameter is slightly less than high-temperature steam wall pipe external diameter, forms compression type annexation with high-temperature steam wall pipe; Insulating two (6) is made up of heat-preservation cotton, is positioned at the junction of one of insulating and thermal insulation wall (4); Insulating three (7) is made up of heat-preservation cotton, is positioned at the junction of one of insulating and boiler bottom plate (8); Form the triple Elastic heat insulation insulation construction of two vertical and one horizontal.The present invention forms firm multiple elastic thermal insulation structure layer at the place through walls of high-temperature steam wall pipe, solves due to unit start-stop every day, wall pipe moves up and down, swings, cause seal failure, causes the problem of smoke spillage.There is the beneficial effect preventing smoke spillage.
Description
Technical field
The present invention relates to a kind of attemperator, particularly a kind of thermal insulation structure for combustion engine waste heat boiler wall pipe.Belong to the heat-insulation and heat-preservation equipment technical field of combustion engine waste heat boiler.
Background technology
The 390MW level gas-steam combined circulating generation unit of domestic first batch of introduction and the supporting waste heat boiler model of M701F combustion engine are NG-M701F-R, adopt modular construction, after from stokehold to stove (namely along flow of flue gas direction) arrange six modules successively, be respectively reheater 2, reheater 1, high pressure evaporator, high-pressure economizer, middle pressure superheater and low-pressure superheater.These modules pick out pipeline through drop-bottom from bottom header successively, and former boiler producer adopts in base plate paving heat-preservation cotton, reserved pore through walls in heat-preservation cotton, and base plate adopts the conventional method of expansion joint sealing fume outward; Due to unit start-stop every day, wall pipe moves up and down, and swings, and around tube wall through walls, insulation follows the string excesssive gap, cause seal failure, cause smoke spillage, make furnace high-temperature flue gas be directly delivered on base plate, cause drop-bottom temperature to raise, drop-bottom temperature is between 160 ~ 230 DEG C, expansion joint is flexible large, long-term overtemperature, and service life shortens greatly; Scatter and disappear valuable heat energy simultaneously, reduces the utilization rate of energy, cause economic loss.
Summary of the invention
Object of the present invention, being the problem in order to solve the easy fatal seal failure of above-mentioned prior art, smoke spillage, providing a kind of thermal insulation structure for combustion engine waste heat boiler wall pipe.This insulation construction has that structure is simple, energy-saving and cost-reducing, environmental protect, can substantially increase the feature in the service life of expansion joint.
Object of the present invention can reach by the following technical programs:
For the thermal insulation structure of combustion engine waste heat boiler wall pipe, comprise the high-temperature steam wall pipe of combustion engine waste heat boiler, its design feature is: at three layers, the place through walls of high-temperature steam wall pipe insulating; One of insulating is made up of elastic metallic net parcel heat-preservation cotton, in the form of a ring, its internal diameter is slightly less than high-temperature steam wall pipe external diameter, forms compression type annexation with high-temperature steam wall pipe; Two of insulating is made up of heat-preservation cotton, is positioned at the junction of one of insulating and thermal insulation wall; Three of insulating is made up of heat-preservation cotton, is positioned at the junction of one of insulating and boiler bottom plate; At insulating two, three of insulating, elastic metallic parcel net is set with the junction of thermal insulation wall, one of insulating makes ring-type parcel around high-temperature steam wall pipe, two of insulating makes ring-type parcel around one of insulating, insulating three around one of insulating, insulating two do ring-type parcel, form the triple Elastic heat insulation insulation construction of two vertical and one horizontal.
Object of the present invention can also reach by the following technical programs:
A kind of Technological improvement plan of the present invention is: can arrange several spring bands at the lateral wall of one of insulating.
A kind of Technological improvement plan of the present invention is: the elastic metallic net of one of insulating can be made up of collapsible thickening stainless (steel) wire.
A kind of Technological improvement plan of the present invention is: for wrapping up insulating two, the elastic metallic parcel net of insulating three can be made up of collapsible stainless (steel) wire.
A kind of Technological improvement plan of the present invention is: be provided with fixed head at boiler bottom plate lower surface, and this fixed head can be " L " shape and structure, can be welded on boiler bottom plate lower surface by welding manner.
A kind of Technological improvement plan of the present invention is: can be provided with heat-preservation cotton layer in the inner chamber that " L " shape circular ring structure is formed.
Beneficial effect of the present invention:
1, the present invention is owing to arranging elastic metallic parcel net at insulating two, three of insulating with the junction of thermal insulation wall, one of insulating makes ring-type parcel around high-temperature steam wall pipe, two of insulating makes ring-type parcel around one of insulating, insulating three around one of insulating, insulating two do ring-type parcel, form the triple Elastic heat insulation insulation construction of two vertical and one horizontal; Therefore, firm multiple elastic thermal insulation structure layer is formed at the place through walls of high-temperature steam wall pipe, ensure good sealing, solve in prior art due to unit start-stop every day, wall pipe moves up and down, swing, around tube wall through walls, insulation follows the string excesssive gap, causes seal failure, causes the problem of smoke spillage.There is the beneficial effect preventing smoke spillage.
2, the present invention has that structure is simple, energy-saving and cost-reducing, environmental protect, improves the beneficial effect in the service life of expansion joint.
Accompanying drawing explanation
Fig. 1 is the structural profile view of a specific embodiment of the present invention.
Fig. 2 is the partial enlarged drawing at A place in Fig. 1.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail:
Specific embodiment 1:
With reference to Fig. 1, the present embodiment comprises the high-temperature steam wall pipe 15 of combustion engine waste heat boiler, at three layers, the place through walls of high-temperature steam wall pipe insulating; One of insulating 5 is made up of elastic metallic net parcel heat-preservation cotton, in the form of a ring, its internal diameter is slightly less than high-temperature steam wall pipe external diameter, forms compression type annexation with high-temperature steam wall pipe; 26 of insulating is made up of heat-preservation cotton, is positioned at the junction of one of insulating and thermal insulation wall 4; 37 of insulating is made up of heat-preservation cotton, is positioned at the junction of one of insulating and boiler bottom plate 8; At insulating two, three of insulating, elastic metallic parcel net 13 is set with the junction of thermal insulation wall 4, one of insulating makes ring-type parcel around high-temperature steam wall pipe, two of insulating makes ring-type parcel around one of insulating, insulating three around one of insulating, insulating two do ring-type parcel, form the triple Elastic heat insulation insulation construction of two vertical and one horizontal.
In the present embodiment:
Arranging several spring bands 14 at the lateral wall of one of insulating 5, can be 1,2,3, more than 4 or 5.The elastic metallic net 3 of one of insulating 5 is made up of collapsible thickening stainless (steel) wire.For wrapping up insulating two, the elastic metallic parcel net 13 of insulating three is made up of collapsible stainless (steel) wire.Be provided with fixed head 11 at boiler bottom plate 8 lower surface, this fixed head 11 is " L " shape and structure, is welded on boiler bottom plate 8 lower surface by welding manner.The upper surface of Internal baffle 1 is provided with location-plate 2.
Described fixed head 11 is L shape circular ring structure, is welded on boiler bottom plate 8 lower surface by welding manner, is closely fixed the 5th heat-preservation cotton layer 10.
Specific embodiment 2:
As the further improvement of specific embodiment 1, the feature of the present embodiment 2 is: fixed head 11 is " L " shape circular ring structure, is welded on boiler bottom plate 8 lower surface by welding manner, in the inner chamber that " L " shape circular ring structure is formed, be provided with heat-preservation cotton layer 10.
The present invention is provided with the heat-preservation cotton layer of three layers of overlaying structure along high-temperature steam wall pipe axis direction, heat-preservation cotton layer is coated by stainless steel cloth, form the cirque structure of closely knit rule, and spring is set on heat-preservation cotton layer, tension heat-preservation cotton layer, makes the inner ring of heat-preservation cotton layer closely overlap then high-temperature steam wall pipe.Efficiently solve due to unit start-stop every day in prior art, wall pipe moves up and down, and swings, and around tube wall through walls, insulation follows the string excesssive gap, causes seal failure, causes the problem of smoke spillage.Adopt the present invention that furnace high-temperature flue gas can be prevented to be directly delivered on boiler bottom plate, prevent boiler bottom plate from causing because of gas leakage temperature to raise, thus the service life of director's expansion joint.Meanwhile, the present invention has good heat-insulation and heat-preservation function, can prevent heat energy dissipation, put forward high-octane utilization rate, can increase economic efficiency, have again the social benefit of protection of the environment.
The above; be only the present invention's preferably specific embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all belonged to protection scope of the present invention.
Claims (7)
1., for the thermal insulation structure of combustion engine waste heat boiler wall pipe, comprise the high-temperature steam wall pipe (15) of combustion engine waste heat boiler, it is characterized in that: three layers of insulating are set at the place through walls of high-temperature steam wall pipe; Be provided with the heat-preservation cotton layer of three layers of overlaying structure along high-temperature steam wall pipe axis direction, heat-preservation cotton layer is coated by stainless steel cloth, forms the cirque structure of closely knit rule; One of insulating (5) is made up of elastic metallic net parcel heat-preservation cotton, in the form of a ring, its internal diameter is slightly less than high-temperature steam wall pipe external diameter, forms compression type annexation with high-temperature steam wall pipe; Insulating two (6) is made up of heat-preservation cotton, is positioned at the junction of one of insulating and thermal insulation wall (4); Insulating three (7) is made up of heat-preservation cotton, is positioned at the junction of one of insulating and boiler bottom plate (8); At insulating two, three of insulating, elastic metallic parcel net (13) is set with the junction of thermal insulation wall (4), one of insulating makes ring-type parcel around high-temperature steam wall pipe, two of insulating makes ring-type parcel around one of insulating, insulating three around one of insulating, insulating two do ring-type parcel, form the triple Elastic heat insulation insulation construction of two vertical and one horizontal, and spring is set on heat-preservation cotton layer, tension heat-preservation cotton layer, makes the inner ring of heat-preservation cotton layer closely overlap then high-temperature steam wall pipe.
2. the thermal insulation structure for combustion engine waste heat boiler wall pipe according to claim 1, is characterized in that: arrange several spring bands (14) at the lateral wall of one of insulating (5).
3. the thermal insulation structure for combustion engine waste heat boiler wall pipe according to claim 1 and 2, is characterized in that: the elastic metallic net (3) of one of insulating (5) is made up of collapsible thickening stainless (steel) wire.
4. the thermal insulation structure for combustion engine waste heat boiler wall pipe according to claim 1 and 2, is characterized in that: for wrapping up insulating two, the elastic metallic parcel net (13) of insulating three is made up of collapsible stainless (steel) wire.
5. the thermal insulation structure structure for combustion engine waste heat boiler wall pipe according to claim 1 and 2, it is characterized in that: be provided with fixed head (11) at boiler bottom plate (8) lower surface, this fixed head (11) is " L " shape and structure, is welded on boiler bottom plate (8) lower surface by welding manner.
6. the thermal insulation structure structure for combustion engine waste heat boiler wall pipe according to claim 5, it is characterized in that: be provided with fixed head (11) at boiler bottom plate (8) lower surface, this fixed head (11) is " L " shape circular ring structure, is welded on boiler bottom plate (8) lower surface by welding manner.
7. the thermal insulation structure for combustion engine waste heat boiler wall pipe according to claim 6, is characterized in that: in the inner chamber that " L " shape circular ring structure is formed, be provided with heat-preservation cotton layer (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210590311.9A CN103062752B (en) | 2012-12-30 | 2012-12-30 | For the thermal insulation structure of combustion engine waste heat boiler wall pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210590311.9A CN103062752B (en) | 2012-12-30 | 2012-12-30 | For the thermal insulation structure of combustion engine waste heat boiler wall pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103062752A CN103062752A (en) | 2013-04-24 |
| CN103062752B true CN103062752B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210590311.9A Expired - Fee Related CN103062752B (en) | 2012-12-30 | 2012-12-30 | For the thermal insulation structure of combustion engine waste heat boiler wall pipe |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103994420B (en) * | 2014-05-14 | 2016-08-24 | 无锡华光锅炉股份有限公司 | A kind of inner side insulation barrier structure at header place through walls |
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| CN201724196U (en) * | 2009-12-09 | 2011-01-26 | 上海锅炉厂有限公司 | Boiler screen type heating-surface furnace top tube-penetrating bundle heat-preserving and sealing device |
| CN102338369A (en) * | 2010-07-20 | 2012-02-01 | 王悦 | Method and device for sealing body of power station boiler |
| CN202171096U (en) * | 2011-08-02 | 2012-03-21 | 中国石油化工集团公司 | Sealing thermal-insulating structure on an exit and an entrance of a conversion section furnace tube |
| CN203099794U (en) * | 2012-12-30 | 2013-07-31 | 深圳市广前电力有限公司 | Heat preservation structure for gas turbine waste heat boiler through-wall pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08110005A (en) * | 1994-10-06 | 1996-04-30 | Ishikawajima Harima Heavy Ind Co Ltd | Seal structure for ceiling enclosure of boiler |
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2012
- 2012-12-30 CN CN201210590311.9A patent/CN103062752B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5538261A (en) * | 1994-08-02 | 1996-07-23 | Columbian Chemicals Company | Mechanical heat-exchange tube sealing system |
| US5855375A (en) * | 1997-05-12 | 1999-01-05 | General Motors Corporation | Seal for steering assist fluid motor |
| CN101004258A (en) * | 2006-01-18 | 2007-07-25 | 天津市津鲁源电力工程技术服务有限公司 | Solid flexible seal method for boilers in power plants |
| CN1811270A (en) * | 2006-02-24 | 2006-08-02 | 郭予超 | Method of eliminating fume leakage in top of boiler |
| CN101315182A (en) * | 2007-06-01 | 2008-12-03 | 过典正 | Sealing method for combination part of pipe and boiler body |
| CN201269538Y (en) * | 2008-07-07 | 2009-07-08 | 青岛天兰电力实业有限公司 | Combined flexible oven roof sealing device |
| CN201288378Y (en) * | 2008-10-14 | 2009-08-12 | 中国船舶重工集团公司第七0三研究所 | Sealing device for through-wall pipe of exhaust-heat boiler furnace wall |
| CN201724196U (en) * | 2009-12-09 | 2011-01-26 | 上海锅炉厂有限公司 | Boiler screen type heating-surface furnace top tube-penetrating bundle heat-preserving and sealing device |
| CN102338369A (en) * | 2010-07-20 | 2012-02-01 | 王悦 | Method and device for sealing body of power station boiler |
| CN202171096U (en) * | 2011-08-02 | 2012-03-21 | 中国石油化工集团公司 | Sealing thermal-insulating structure on an exit and an entrance of a conversion section furnace tube |
| CN203099794U (en) * | 2012-12-30 | 2013-07-31 | 深圳市广前电力有限公司 | Heat preservation structure for gas turbine waste heat boiler through-wall pipe |
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| CN103062752A (en) | 2013-04-24 |
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Granted publication date: 20160120 Termination date: 20161230 |