CN206724134U - A kind of panelized-tube-wall section of pitches - Google Patents
A kind of panelized-tube-wall section of pitches Download PDFInfo
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- CN206724134U CN206724134U CN201720439255.7U CN201720439255U CN206724134U CN 206724134 U CN206724134 U CN 206724134U CN 201720439255 U CN201720439255 U CN 201720439255U CN 206724134 U CN206724134 U CN 206724134U
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- tube
- panelized
- wall section
- band steel
- steel
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Abstract
The utility model discloses a kind of panelized-tube-wall section of pitches, the panelized-tube-wall section is formed by connecting by water-cooling wall pipe and band steel compartment of terrain, the band steel includes middle part band steel and avris position band steel, the water-cooling wall pipe uses 12Cr1MoV steel using SA 213T91 steel, middle part band steel using SA 387GR91 steel and avris position band steel, wherein, pitch is gradually reduced by centre to both sides between each at least two pipe of the panelized-tube-wall section both sides.Pitches panelized-tube-wall section provided by the utility model is designed using panelized-tube-wall section pitches, it is capable of the wall temperature of effective reduction tube panel avris band steel, make tube panel avris band steel that 12Cr1MoV steel can be used, then avoid organizing between tube panel the heat treatment on spot of weldering, reduce installation difficulty, reduce installation cost, shorten installation period and improve installation quality.
Description
Technical field
The technical field of station boiler is the utility model is related to, more particularly, is related to a kind of water screen tube of pitches
Screen.
Background technology
To promote the development of coal-fired power project high-efficiency cleaning, it is 35MPa.a/ that country, which encourages the coal group of motors parameter of demonstration, at present
615 DEG C/630 DEG C/630 DEG C (steam turbine entrances).The further lifting of coal group of motors parameter, causes the wall temperature of boiler water wall significantly
Rise, subregion exceeds the permission SC service ceiling temperature of tubing 12Cr1MoVG steel and flat bar stock 12Cr1MoV steel, then
It is the greater degree material such as SA-387GR91 steel that can be SA-213T91 steel by adjusting water-cooling wall tubing and adjust flat bar stock
Material configuration meet intensity and resistance to high temperature oxidation in terms of requirement.
When water-cooling wall is interior between tube panel using pipe SA-213T91 and band steel SA-387GR91 configuration, single tube panel
Group weld seam is required to be heat-treated.Panelized-tube-wall section highly about 10m, heat treatment temperature last about more than 700 DEG C, heat treatment time
6h, the heat treatment of single tube panel can be realized in manufactory, but the heat treatment condition of the site welding technology between tube panel is limited, increase
Installation difficulty and installation cost, extend installation period and installation quality are difficult to ensure that.
The content of the invention
In order to solve the problems of the prior art, the purpose of this utility model is to provide one kind by improving panelized-tube-wall section
Structure avoids the pitches panelized-tube-wall section of panelized-tube-wall section heat treatment on spot.
The utility model provides a kind of panelized-tube-wall section of pitches, the panelized-tube-wall section by water-cooling wall pipe with it is flat
Steel compartment of terrain is formed by connecting, and the band steel includes middle part band steel and avris position band steel, and the water-cooling wall pipe uses SA-
213T91 steel, middle part band steel use 12Cr1MoV steel using SA-387GR91 steel and avris position band steel, wherein, the water
Pitch is gradually reduced by centre to both sides between each at least two pipe of cold wall tube panel both sides.
According to one embodiment of the panelized-tube-wall section of the utility model pitches, each the four of the panelized-tube-wall section both sides
Pitch is gradually reduced by centre to both sides between individual pipe.
According to one embodiment of the panelized-tube-wall section of the utility model pitches, the panelized-tube-wall section middle part
Between pipe pitch be between L1 and the 4th pipe of the panelized-tube-wall section both sides pitch be L2, the panelized-tube-wall section both sides
Pitch is L3 between 3rd pipe, and pitch is L2 between second pipe of the panelized-tube-wall section both sides, the panelized-tube-wall section
Pitch is L4/2 between first pipe of both sides, wherein, L2=α * L1,0.75≤α ＜ 1；L3=β * L2,0.75≤β ＜ 1；L4
=γ * L3,0.75≤γ ＜ 1.
According to one embodiment of the panelized-tube-wall section of the utility model pitches, the panelized-tube-wall sections of the pitches without
The heat treatment after panelized-tube-wall section site welding technology need to be carried out.
Compared with the prior art, pitches panelized-tube-wall section provided by the utility model is set using panelized-tube-wall section pitches
Meter, it is capable of the wall temperature of effective reduction tube panel avris band steel, makes tube panel avris band steel that 12Cr1MoV steel can be used, then avoid pipe
The heat treatment on spot of weldering is organized between screen, installation difficulty is reduced, reduces installation cost, shortens installation period and improve installation quality.
Brief description of the drawings
Fig. 1 shows the structural representation of the pitches panelized-tube-wall section according to the utility model exemplary embodiment.
Description of reference numerals：
1- water-cooling walls pipe, 2- middle parts band steel, 3- avris position band steel.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification, unless specifically stated otherwise, can be equivalent by other or with similar purpose
Alternative features are replaced.I.e., unless specifically stated otherwise, each feature is an example in a series of equivalent or similar characteristics
.
The structure of the panelized-tube-wall section of pitches and principle in the utility model will be described in detail below.
Fig. 1 shows the structural representation of the pitches panelized-tube-wall section according to the utility model exemplary embodiment.
As shown in figure 1, according to exemplary embodiment of the present utility model, the panelized-tube-wall section of shown pitches is by water-cooling wall
Pipe 1 is formed by connecting with band steel compartment of terrain, is connected to each other for example with welding manner.Wherein, band steel includes middle part band steel 2
With avris position band steel 3, water-cooling wall pipe 1 of the invention uses SA- using SA-213T91 steel, middle part band steel 2
387GR91 steel and the use 12Cr1MoV steel of avris position band steel 3, wherein, each at least two pipes segmentum intercalaris of panelized-tube-wall section both sides
Away from being gradually reduced by centre to both sides.
The utility model is arranged to pitches by pitch between several pipes by panelized-tube-wall section both sides, it can be ensured that water
The band steel wall temperature of cold wall tube panel avris is in the permission use range of 12Cr1MoV steel, so as to use 12Cr1MoV steel conducts
The material of avris position band steel 3, and then avoid the heat treatment after panelized-tube-wall section site welding technology.
Preferably, pitch is gradually reduced by centre to both sides between each four pipes of panelized-tube-wall section both sides.That is, from water cooling
Two lateral mediants of wall tube panel are risen, and pitch is gradually reduced by centre to both sides between each four pipes.Specifically, as shown in figure 1,
Between the pipe of panelized-tube-wall section middle part pitch be between L1 and the 4th pipe of panelized-tube-wall section both sides pitch be L2 (from side
Edge position band steel 3 is to pitch between the 4th pipe of several of middle part band steel 1), the 3rd pipe segmentum intercalaris of panelized-tube-wall section both sides
Away from being L3 (from edge band steel 3 to pitch between the 3rd pipe of the middle part band steel 1 several), panelized-tube-wall section both sides
Pitch is L2 (from edge band steel 3 to pitch between second pipe of the middle part band steel 1 several) between second pipe, water cooling
Pitch is L4/2 (i.e. the width of edge band steel 3) between first pipe of wall tube panel both sides, wherein, L2=α * L1,0.75
≤ α ＜ 1；L3=β * L2,0.75≤β ＜ 1；L4=γ * L3,0.75≤γ ＜ 1.
In actual applications, the scope of pitches can according to specific water-cooling wall thermic load, flow, loop etc., be adjusted
And α, β and γ value, the wall temperature of avris position band steel 3 is controlled within 12Cr1MoV permission use range.Thus,
The panelized-tube-wall section of the utility model pitches need not carry out the heat treatment after panelized-tube-wall section site welding technology, efficiently reduce peace
Dress difficulty, installation cost is reduced, shorten installation period and improves installation quality.
The panelized-tube-wall section of the utility model pitches is described further with reference to specific example.
Example：
The structure of panelized-tube-wall section is as shown in figure 1, wherein, for boiler parameter 36.75MPa.a/620 DEG C/633 DEG C/633
DEG C, the specific material of upper vertical panelized-tube-wall section, dimensional parameters and calculation of Wall Temperature result are as shown in table 1.
Specific material, dimensional parameters and the calculation of Wall Temperature result of the upper vertical panelized-tube-wall section of table 1
As shown in Table 1, designed by the pitches of panelized-tube-wall section, the avris position band steel wall temperature 560 of panelized-tube-wall section
DEG C it is within the permission use range of 12Cr1MoV steel, therefore the panelized-tube-wall section structure and parameter of listed parameter can in table 1
Panelized-tube-wall section site welding technology is avoided to be heat-treated.
In summary, pitches panelized-tube-wall section provided by the utility model is designed using panelized-tube-wall section pitches, energy
Enough effective the reduces the wall temperature of tube panel avris band steel, makes tube panel avris band steel that 12Cr1MoV steel can be used, and then avoids between tube panel
The heat treatment on spot of group weldering, installation difficulty is reduced, installation cost is reduced, shorten installation period and improves installation quality.
The utility model is not limited to foregoing embodiment.The utility model expands to any in this specification
The new feature of middle disclosure or any new combination, and disclose any new method or process the step of or any new group
Close.
Claims (4)
1. a kind of panelized-tube-wall section of pitches, it is characterised in that the panelized-tube-wall section is by water-cooling wall pipe and band steel interval
Ground is formed by connecting, and the band steel includes middle part band steel and avris position band steel, and the water-cooling wall pipe uses SA-213T91
Steel, middle part band steel use 12Cr1MoV steel using SA-387GR91 steel and avris position band steel, wherein, the water screen tube
Pitch is gradually reduced by centre to both sides between shielding each at least two pipe of both sides.
2. the panelized-tube-wall section of pitches according to claim 1, it is characterised in that each the four of the panelized-tube-wall section both sides
Pitch is gradually reduced by centre to both sides between individual pipe.
3. the panelized-tube-wall section of pitches according to claim 2, it is characterised in that the panelized-tube-wall section middle part
Between pipe pitch be between L1 and the 4th pipe of the panelized-tube-wall section both sides pitch be L2, the panelized-tube-wall section both sides
Pitch is L3 between 3rd pipe, and pitch is L2 between second pipe of the panelized-tube-wall section both sides, the panelized-tube-wall section
Pitch is L4/2 between first pipe of both sides, wherein, L2=α * L1,0.75≤α ＜ 1；L3=β * L2,0.75≤β ＜ 1；L4
=γ * L3,0.75≤γ ＜ 1.
4. the panelized-tube-wall section of pitches according to claim 1, it is characterised in that the panelized-tube-wall section of the pitches without
The heat treatment after panelized-tube-wall section site welding technology need to be carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720439255.7U CN206724134U (en) | 2017-04-24 | 2017-04-24 | A kind of panelized-tube-wall section of pitches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720439255.7U CN206724134U (en) | 2017-04-24 | 2017-04-24 | A kind of panelized-tube-wall section of pitches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206724134U true CN206724134U (en) | 2017-12-08 |
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ID=60505535
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720439255.7U Active CN206724134U (en) | 2017-04-24 | 2017-04-24 | A kind of panelized-tube-wall section of pitches |
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| Country | Link |
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| CN (1) | CN206724134U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630999A (en) * | 2019-03-29 | 2019-12-31 | 广东大唐国际雷州发电有限责任公司 | Method for arranging high-temperature heating surfaces of million pi type efficient ultra-supercritical boiler at unequal pitches |
| CN111256101A (en) * | 2019-12-31 | 2020-06-09 | 哈尔滨锅炉厂有限责任公司 | Unequal-pitch arrangement method for high-temperature heating surfaces of million-pi-shaped double-tangent-circle boiler |
-
2017
- 2017-04-24 CN CN201720439255.7U patent/CN206724134U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630999A (en) * | 2019-03-29 | 2019-12-31 | 广东大唐国际雷州发电有限责任公司 | Method for arranging high-temperature heating surfaces of million pi type efficient ultra-supercritical boiler at unequal pitches |
| CN111256101A (en) * | 2019-12-31 | 2020-06-09 | 哈尔滨锅炉厂有限责任公司 | Unequal-pitch arrangement method for high-temperature heating surfaces of million-pi-shaped double-tangent-circle boiler |
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