CN108954370A - Water-cooling wall in low nitrogen water-tube boiler - Google Patents
Water-cooling wall in low nitrogen water-tube boiler Download PDFInfo
- Publication number
- CN108954370A CN108954370A CN201811159763.5A CN201811159763A CN108954370A CN 108954370 A CN108954370 A CN 108954370A CN 201811159763 A CN201811159763 A CN 201811159763A CN 108954370 A CN108954370 A CN 108954370A
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- Prior art keywords
- water
- pipeline section
- drum
- low nitrogen
- cooling wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
- F23M5/08—Cooling thereof; Tube walls
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The present invention provides the water-cooling walls in a kind of low nitrogen water-tube boiler, belong to field of mechanical technique.It solves the problems, such as the prior art there is stability not high.Water-cooling wall in this low nitrogen water-tube boiler, including rack, it further include upper drum, lower drum and several convection banks, it above-mentioned upper drum and is connected on the rack with lower drum and upper drum is arranged in parallel with lower drum, the quantity of above-mentioned convection bank is several and the upper and lower ends of convection bank are connected with upper drum and lower drum respectively, above-mentioned several convection banks are disposed adjacent and form the tube bundle unit of curtain shape between upper drum and lower drum, there is at the center of tube bundle unit the evacuation section to its lateral curvature along the axis direction of upper drum, above-mentioned several evacuation sections are centrally formed an avoid holes in tube bundle unit.Water-cooling wall stability in this low nitrogen water-tube boiler is high.
Description
Technical field
The invention belongs to field of mechanical technique, a kind of be related in low nitrogen water-tube boiler water-cooling wall.
Background technique
Water-cooling wall is the main heated portion of boiler, it is made of the row's of number steel pipe, is distributed in the surrounding of boiler furnace.It
Inside is flowing water or steam, and the external world receives the heat of the flame of boiler furnace.It is main to absorb burner hearth high temperature combustion product
Radiations heat energy, working medium makees ascending motion wherein, by thermal evaporation.
Full name " water screen tube ", is once called as " water cooled wall ", also known as " tedge ".Usually vertically it is laid on furnace wall inner wall,
It is mainly used to absorb the boiler heating surface of furnace flame and high-temperature flue gas institute discharging radiation heat.It is that various modern boiler evaporatings are heated
The broad form in face is also the basic element of character in boiler water cycle circuit.It is therefore named because having cooling and protection furnace wall effect concurrently.
When water-cooling wall initial design, purpose is not to be heated, but in order to which cooled hearth is allowed to not by high temperature.Afterwards
Come, due to its good heat exchange function, gradually replaces drum as the main heated portion of boiler.
Water-cooling wall be laid in boiler furnace inner wall, by the molecular evaporating heating surface of many parallel transistors.The effect of water-cooling wall
It is the radiations heat energy for absorbing burner hearth high temperature flame or flue gas, steam or hot water is generated in pipe, and reduce temperature of furnace wall, protects
Furnace wall.In heavy duty boiler, furnace flame temperature is very high, and the intensity of heat radiation is very big.Have in boiler 40~50% even more
More heats are absorbed by water-cooling wall.
But existing water-cooling wall is simple setting in boiler, heating effect is undesirable.
Summary of the invention
It is high and compact-sized the purpose of the present invention is in view of the above-mentioned problems existing in the prior art, providing a kind of stability
In water-cooling wall in low nitrogen water-tube boiler.
Object of the invention can be realized by the following technical scheme:
A kind of water-cooling wall in low nitrogen water-tube boiler, including rack, which is characterized in that further include upper drum, lower drum and
Several convection banks, above-mentioned upper drum and are connected on the rack and upper drum is arranged in parallel with lower drum with lower drum, above-mentioned
The quantity of convection bank is several and the upper and lower ends of convection bank are connected with upper drum and lower drum respectively, above-mentioned several
Convection bank is disposed adjacent and forms the tube bundle unit of curtain shape between upper drum and lower drum, and the axis direction along upper drum exists
There is the evacuation section to its lateral curvature, above-mentioned several evacuation sections are centrally formed one in tube bundle unit and keep away at the center of tube bundle unit
Allow hole.
This water-cooling wall creativeness circulates fluid media (medium) between upper drum and lower drum by convection bank.
Meanwhile the setting of avoid holes can make convection bank is stable to be coated on heat pipe, to be stablized by this water-cooling wall
Absorption heat.Meanwhile boiler inner wall is played a certain protective role.
In the water-cooling wall in above-mentioned low nitrogen water-tube boiler, if having between above-mentioned upper drum lower part and lower drum top
Dry convection bank.
In the water-cooling wall in above-mentioned low nitrogen water-tube boiler, the upper drum and lower drum side have several convection tubes
Beam, above-mentioned several convection banks form heated parts, and above-mentioned avoid holes are located at heated parts.
Heat pipe is threaded through at avoid holes, passes through heat at heated parts energy stable absorption heat pipe.
In the water-cooling wall in above-mentioned low nitrogen water-tube boiler, several convection banks are before upper drum and lower drum
End forms front water wall.
In the water-cooling wall in above-mentioned low nitrogen water-tube boiler, the front water wall is symmetricly set on avoid holes two sides
Place.
In the water-cooling wall in above-mentioned low nitrogen water-tube boiler, several convection banks are after upper drum and lower drum
End forms rear water wall.
In the water-cooling wall in above-mentioned low nitrogen water-tube boiler, the rear water wall is symmetricly set on avoid holes two sides
Place.
The setting of front water wall and rear water wall forms gate-shaped structure, and relief portion is blocked in front water wall and rear wall
The opening of water-cooling wall can effectively improve stability and structural compactness at relief portion.
In the water-cooling wall in above-mentioned low nitrogen water-tube boiler, the evacuation section includes pipeline section one, pipeline section two and pipeline section three,
Above-mentioned pipeline section one and pipeline section three are obliquely installed, and above-mentioned pipeline section two is vertically arranged with upper drum and pipeline section two is located at pipeline section one and pipeline section
Between three.
In the water-cooling wall in above-mentioned low nitrogen water-tube boiler, the pipeline section one and pipeline section three are symmetricly set on pipeline section two
At downside.
In the water-cooling wall in above-mentioned low nitrogen water-tube boiler, the junction of the pipeline section one and pipeline section two has smoothed
The excessive portion one of degree.
In the water-cooling wall in above-mentioned low nitrogen water-tube boiler, the junction of the pipeline section two and pipeline section three has smoothed
The excessive portion two of degree.
The setting of pipeline section one, pipeline section two and pipeline section three can be reduced the curvature of convection bank, meanwhile, excessive portion one and excessively
The setting in portion two can make the junction of pipeline section smooth.
Excessive portion one and excessive portion two are arc structure.
Compared with prior art, the relief portion of the water-cooling wall in this low nitrogen water-tube boiler is by front water wall and rear wall water cooling
Wall is located in it, not only increases its stability, and structure is also compact.
Meanwhile the setting of upper drum and lower drum also assures that fluid media (medium) can be stable circulates, and further mentions
Its high stability, has very high practical value.
Detailed description of the invention
Fig. 1 is the side structure schematic view of the water-cooling wall in this low nitrogen water-tube boiler.
Fig. 2 is the schematic view of the front view of the water-cooling wall in this low nitrogen water-tube boiler.
In figure, 1, rack；2, upper drum；3, lower drum；4, section is avoided；4a, pipeline section one；4b, pipeline section two；4c, pipeline section three；
5, front water wall；6, rear water wall.
Specific embodiment
As depicted in figs. 1 and 2, the water-cooling wall in this low nitrogen water-tube boiler includes rack 1, further includes upper drum 2, lower drum
3 and several convection banks, it above-mentioned upper drum 2 and is connected in rack 1 with lower drum 3 and upper drum 2 is parallel with lower drum 3 sets
It sets, the quantity of above-mentioned convection bank is several and the upper and lower ends of convection bank are connected with upper drum 2 and lower drum 3 respectively
Logical, above-mentioned several convection banks are disposed adjacent and form the tube bundle unit of curtain shape between upper drum 2 and lower drum 3, along upper pot
The axis direction of cylinder 2 has the evacuation section 4 to its lateral curvature at the center of tube bundle unit, and above-mentioned several evacuation sections 4 are in pipe
Beam unit center forms an avoid holes.
There are several convection banks between above-mentioned 2 lower part of upper drum and 3 top of lower drum.
The upper drum 2 has several convection banks with 3 side of lower drum, and above-mentioned several convection banks form heated parts,
Above-mentioned avoid holes are located at heated parts.
Several convection banks form front water wall 5 in the front end of upper drum 2 and lower drum 3.
The front water wall 5 is symmetricly set at avoid holes two sides.
Several convection banks form rear water wall 6 in the rear end of upper drum 2 and lower drum 3.
The rear water wall 6 is symmetricly set at avoid holes two sides.
The evacuation section includes three 4c of one 4a of pipeline section, two 4b of pipeline section and pipeline section, above-mentioned one 4a of pipeline section and three 4c of pipeline section inclination
Setting, above-mentioned two 4b of pipeline section and upper drum 2 is vertically arranged and two 4b of pipeline section is located between three 4c of one 4a of pipeline section and pipeline section.
One 4a of pipeline section and three 4c of pipeline section is symmetricly set at two 4b upper and lower sides of pipeline section.
The junction of one 4a of pipeline section and two 4b of pipeline section has the excessive portion one of smooth excessiveness.
The junction of two 4b of pipeline section and three 4c of pipeline section has the excessive portion two of smooth excessiveness.
This water-cooling wall creativeness circulates fluid media (medium) between upper drum and lower drum by convection bank.
Meanwhile the setting of avoid holes can make convection bank is stable to be coated on heat pipe, to be stablized by this water-cooling wall
Absorption heat.Meanwhile boiler inner wall is played a certain protective role.
Claims (10)
1. the water-cooling wall in a kind of low nitrogen water-tube boiler, including rack, which is characterized in that if further include upper drum, lower drum and
Dry convection bank, above-mentioned upper drum and is connected on the rack and upper drum is arranged in parallel with lower drum with lower drum, above-mentioned right
The quantity of flowing bundle is several and the upper and lower ends of convection bank are connected with upper drum and lower drum respectively, above-mentioned several right
Flowing bundle is disposed adjacent and is formed between upper drum and lower drum the tube bundle unit of curtain shape, and the axis direction along upper drum is in pipe
There is the evacuation section to its lateral curvature, above-mentioned several evacuation sections are centrally formed an evacuation in tube bundle unit at the center of Shu Danyuan
Hole.
2. the water-cooling wall in low nitrogen water-tube boiler according to claim 1, which is characterized in that above-mentioned upper drum lower part is under
There are several convection banks between drum top.
3. the water-cooling wall in low nitrogen water-tube boiler according to claim 2, which is characterized in that the upper drum and lower drum
Side has several convection banks, and above-mentioned several convection banks form heated parts, and above-mentioned avoid holes are located at heated parts.
4. the water-cooling wall in low nitrogen water-tube boiler according to claim 3, which is characterized in that several convection banks exist
The front end of upper drum and lower drum forms front water wall.
5. the water-cooling wall in low nitrogen water-tube boiler according to claim 4, which is characterized in that the front water wall is symmetrical
It is arranged at avoid holes two sides.
6. the water-cooling wall in low nitrogen water-tube boiler according to claim 5, which is characterized in that several convection banks exist
The rear end of upper drum and lower drum forms rear water wall.
7. the water-cooling wall in low nitrogen water-tube boiler according to claim 6, which is characterized in that the rear water wall is symmetrical
It is arranged at avoid holes two sides.
8. the water-cooling wall in low nitrogen water-tube boiler according to claim 7, which is characterized in that the evacuation section includes pipeline section
One, pipeline section two and pipeline section three, above-mentioned pipeline section one and pipeline section three are obliquely installed, and above-mentioned pipeline section two is vertically arranged with upper drum and pipeline section
Two between pipeline section one and pipeline section three.
9. the water-cooling wall in low nitrogen water-tube boiler according to claim 8, which is characterized in that the pipeline section one and pipeline section three
It is symmetricly set at two upper and lower sides of pipeline section.
10. the water-cooling wall in low nitrogen water-tube boiler according to claim 9, which is characterized in that the pipeline section one and pipeline section
Two junction has the excessive portion one of smooth excessiveness, and the junction of the pipeline section two and pipeline section three has the excessive of smooth excessiveness
Portion two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811159763.5A CN108954370A (en) | 2018-09-30 | 2018-09-30 | Water-cooling wall in low nitrogen water-tube boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811159763.5A CN108954370A (en) | 2018-09-30 | 2018-09-30 | Water-cooling wall in low nitrogen water-tube boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108954370A true CN108954370A (en) | 2018-12-07 |
Family
ID=64472759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811159763.5A Pending CN108954370A (en) | 2018-09-30 | 2018-09-30 | Water-cooling wall in low nitrogen water-tube boiler |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201047651Y (en) * | 2007-05-30 | 2008-04-16 | 江苏双良锅炉有限公司 | Self-contained boiler with water pipe with two return-stroke completely membrane type wall structure |
| CN201917054U (en) * | 2010-12-20 | 2011-08-03 | 武汉天元锅炉有限责任公司 | Four-drum longitudinally-placed forced-circulation fuel gas hot water boiler |
| CN201954517U (en) * | 2011-01-27 | 2011-08-31 | 张家港格林沙洲锅炉有限公司 | Medium and high pressure quick assembled water tube boiler with single boiler barrel structure |
| CN204005919U (en) * | 2014-08-14 | 2014-12-10 | 浙江特富锅炉有限公司 | A kind of steam boiler |
| CN104456505A (en) * | 2014-12-02 | 2015-03-25 | 中国矿业大学 | Low-concentration coal-bed methane or methane gas steam boiler |
| CN208967835U (en) * | 2018-09-30 | 2019-06-11 | 浙江特富锅炉有限公司 | Water-cooling wall in low nitrogen water-tube boiler |
-
2018
- 2018-09-30 CN CN201811159763.5A patent/CN108954370A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201047651Y (en) * | 2007-05-30 | 2008-04-16 | 江苏双良锅炉有限公司 | Self-contained boiler with water pipe with two return-stroke completely membrane type wall structure |
| CN201917054U (en) * | 2010-12-20 | 2011-08-03 | 武汉天元锅炉有限责任公司 | Four-drum longitudinally-placed forced-circulation fuel gas hot water boiler |
| CN201954517U (en) * | 2011-01-27 | 2011-08-31 | 张家港格林沙洲锅炉有限公司 | Medium and high pressure quick assembled water tube boiler with single boiler barrel structure |
| CN204005919U (en) * | 2014-08-14 | 2014-12-10 | 浙江特富锅炉有限公司 | A kind of steam boiler |
| CN104456505A (en) * | 2014-12-02 | 2015-03-25 | 中国矿业大学 | Low-concentration coal-bed methane or methane gas steam boiler |
| CN208967835U (en) * | 2018-09-30 | 2019-06-11 | 浙江特富锅炉有限公司 | Water-cooling wall in low nitrogen water-tube boiler |
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