CN209054547U - The spirally-wound tubes of boiler water wall and the transition structure of vertical wall pipe - Google Patents
The spirally-wound tubes of boiler water wall and the transition structure of vertical wall pipe Download PDFInfo
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- CN209054547U CN209054547U CN201821545838.9U CN201821545838U CN209054547U CN 209054547 U CN209054547 U CN 209054547U CN 201821545838 U CN201821545838 U CN 201821545838U CN 209054547 U CN209054547 U CN 209054547U
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- wound tubes
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Abstract
The utility model proposes the transition structures of the spirally-wound tubes of boiler water wall and vertical wall pipe, for the connection transition between boiler water wall bottom spirally-wound tubes and water-cooling wall upper vertical tube panel, the transition structure includes spirally-wound tubes butt end, intermediate header and tube panel butt end；The intermediate header is equipped with and adjacent first docking section in spirally-wound tubes butt end；First docking section is equipped with multiple spirally-wound tubes docking pipe fitting and docks with spirally-wound tubes butt end；The intermediate header is equipped with and adjacent second docking section in tube panel butt end；Second docking section is equipped with multiple tube panels docking pipe fitting and docks with tube panel butt end；The utility model can provide transition structure resistant to high temperature for the connection transition between spirally-wound tubes and vertical wall pipe.
Description
Technical field
The utility model relates to the spirally-wound tubes of electrical equipment technical field, especially boiler water wall and vertical wall pipe
Transition structure.
Background technique
There are enough cooling capacities in order to adapt to boiler under various loads, and can effectively compensate for along burner hearth circumference
On thermal deviation, in existing supercritical boiler, lower part water-cooling wall generally use spirally-wound tubes, top water-cooling wall uses one
Secondary rising vertical tube plates are connected with transition header therebetween.Spirally-wound tubes use various bend pipes and furnace wall in transition fragment position
Outer intermediate header is connected, and intermediate header fairlead is connected to furnace wall by special bend pipe and is changed into vertical section, in this way
Biggish plate sealing together is necessarily formed on furnace wall between changeover portion, sealing plate suqare is larger will inevitably be cooling less than good,
So as to cause this long-term overheating operation of part sealing block.
Transition has certain want to the angle of elbow because of differential seat angle, while when bend pipe between spirally-wound tubes and vertical water-wall tube
Ask, must not be plastically deformed, it is inevitable in this way to form larger gap at the position, it is necessary to biggish sealing plate to the position into
Row sealing, sealing plate suqare is larger will inevitably be cooling less than good, leads to this long-term overheating operation of part sealing plate, for a long time
Crackle easily occurs for the sealing plate at the position, and crack propagation to water screen tube causes water-cooling wall to leak when serious, causes unit
Non- stoppage in transit of choosing the easy way out.This phenomenon has generation in many power plant, therefore how to solve the problems, such as that this is extremely urgent.
It solves the problems, such as this, can be improved in terms of following two:
1, changeover portion between spirally-wound tubes and vertical water-wall tube must will not be formed biggish gap, so that close in operation
The medium that the heat that sealing plate absorbs can be water cooled in wall pipe is taken away, and overheating problem will not occur.
2, sealing plate uses heat-resisting material, i.e. for the material when being not required to cooling by medium, the interior tissue of material is not yet
It can change, will not be burnt or generate stress cracking；But in this respect, at water-wall tubes for thermal power plant intermediate header
In-furnace temperature it is quite high (be greater than 1300 DEG C), therefore the 2nd kind of scheme is very high to material requirements, is difficult to find this material, and
Material (generally 12Cr1MoVG or 15CrMo) grade of this material and water screen tube differs greatly, and is not easy to weld, Yi Fasheng
Welding defect.
Summary of the invention
The utility model proposes the transition structure of the spirally-wound tubes of boiler water wall and vertical wall pipe, can for spirally-wound tubes with
Connection transition between vertical wall pipe provides transition structure resistant to high temperature.
The utility model uses following technical scheme.
The transition structure of the spirally-wound tubes of boiler water wall and vertical wall pipe, for boiler water wall bottom spirally-wound tubes with
Connection transition between water-cooling wall upper vertical tube panel, the transition structure include spirally-wound tubes butt end, intermediate header and tube panel
Butt end；The intermediate header is equipped with and adjacent first docking section in spirally-wound tubes butt end；First docking section is equipped with multiple spiral shells
Coil circle docking pipe fitting is docked with spirally-wound tubes butt end；The intermediate header is equipped with and docks with tube panel butt end adjacent second
Portion；Second docking section is equipped with multiple tube panels docking pipe fitting and docks with tube panel butt end.
The spirally-wound tubes docking pipe fitting includes one of two-way pipe fitting, tee pipe fitting or a variety of.
Multiple spirally-wound tubes nozzles are equipped at the spirally-wound tubes butt end；The first docking section inside spin pipeloop docking
Pipe fitting corresponds interface position and spirally-wound tubes butt end spirally-wound tubes nozzle position.
The tube panel docking pipe fitting includes one of two-way pipe fitting, tee pipe fitting or a variety of.
Multiple wall pipe nozzles are equipped at the tube panel butt end；Tube panel butt tube part to interface in second docking section
End wall pipe nozzle position one-to-one correspondence is docked with tube panel in position.
Each spirally-wound tubes in first docking section dock the uniform dense arrangement of pipe fitting；Each pipe of second docking section
The screen docking uniform dense arrangement of pipe fitting.
In the present invention, due to largely using two-way, tee pipe fitting as connection transition, and pipe fitting inlet and outlet are vertical
Furnace wall arrangement, without bending radius, therefore not will form biggish gap between can accomplishing changeover portion, so that pipe fitting position
The fin size of the positions such as sealing plate and helix tube, vertical tube is essentially the same, therefore equally can preferably be cooled down, and will not occur
Scaling loss cracks.
Detailed description of the invention
With reference to the accompanying drawings and detailed description to the further details of explanation of the utility model:
Attached drawing 1 is the schematic diagram of spirally-wound tubes butt end, intermediate header and tube panel butt end；
Attached drawing 2 is another schematic diagram of spirally-wound tubes butt end, intermediate header and tube panel butt end；
Attached drawing 3 is the decomposition diagram of spirally-wound tubes butt end Yu the first docking section；
Attached drawing 4 is the decomposition diagram of tube panel butt end Yu the second docking section；
In figure: 1- spirally-wound tubes butt end；2- intermediate header；3- tube panel butt end；The second docking section 5-；6- first is docked
Portion；7- spirally-wound tubes dock pipe fitting；8- tube panel docks pipe fitting.
Specific embodiment
As shown in Figs 1-4, the transition structure of the spirally-wound tubes of boiler water wall and vertical wall pipe is used for boiler water wall bottom
Connection transition between portion's spirally-wound tubes and water-cooling wall upper vertical tube panel, the transition structure include spirally-wound tubes butt end 1, in
Between header 2 and tube panel butt end 3；The intermediate header 2 is equipped with and adjacent first docking section 6 in spirally-wound tubes butt end；First
Docking section is equipped with multiple spirally-wound tubes docking pipe fitting 7 and docks with spirally-wound tubes butt end 1；The intermediate header 2 is equipped with and tube panel
Adjacent second docking section 5 in butt end；Second docking section is equipped with multiple tube panels docking pipe fitting 8 and docks with tube panel butt end 3.
The spirally-wound tubes docking pipe fitting includes one of two-way pipe fitting, tee pipe fitting or a variety of.
Multiple spirally-wound tubes nozzles are equipped at the spirally-wound tubes butt end；The first docking section inside spin pipeloop docking
Pipe fitting corresponds interface position and spirally-wound tubes butt end spirally-wound tubes nozzle position.
The tube panel docking pipe fitting includes one of two-way pipe fitting, tee pipe fitting or a variety of.
Multiple wall pipe nozzles are equipped at the tube panel butt end；Tube panel butt tube part to interface in second docking section
End wall pipe nozzle position one-to-one correspondence is docked with tube panel in position.
Each spirally-wound tubes in first docking section dock the uniform dense arrangement of pipe fitting；Each pipe of second docking section
The screen docking uniform dense arrangement of pipe fitting.
Claims (6)
1. the transition structure of the spirally-wound tubes of boiler water wall and vertical wall pipe is used for boiler water wall bottom spirally-wound tubes and water
Connection transition between cold wall upper vertical tube panel, it is characterised in that: the transition structure includes spirally-wound tubes butt end, intermediate collection
Case and tube panel butt end；The intermediate header is equipped with and adjacent first docking section in spirally-wound tubes butt end；First docking section is set
There are multiple spirally-wound tubes docking pipe fittings to dock with spirally-wound tubes butt end；The intermediate header is equipped with adjacent with tube panel butt end
Second docking section；Second docking section is equipped with multiple tube panels docking pipe fitting and docks with tube panel butt end.
2. the transition structure of the spirally-wound tubes of boiler water wall according to claim 1 and vertical wall pipe, it is characterised in that:
The spirally-wound tubes docking pipe fitting includes one of two-way pipe fitting, tee pipe fitting or a variety of.
3. the transition structure of the spirally-wound tubes of boiler water wall according to claim 2 and vertical wall pipe, it is characterised in that:
Multiple spirally-wound tubes nozzles are equipped at the spirally-wound tubes butt end；Pair of the first docking section inside spin pipeloop butt tube part
Interface position and spirally-wound tubes butt end spirally-wound tubes nozzle position correspond.
4. the transition structure of the spirally-wound tubes of boiler water wall according to claim 1 and vertical wall pipe, it is characterised in that:
The tube panel docking pipe fitting includes one of two-way pipe fitting, tee pipe fitting or a variety of.
5. the transition structure of the spirally-wound tubes of boiler water wall according to claim 4 and vertical wall pipe, it is characterised in that:
Multiple wall pipe nozzles are equipped at the tube panel butt end；In second docking section tube panel butt tube part to interface position and pipe
Screen docking end wall pipe nozzle position corresponds.
6. the transition structure of the spirally-wound tubes of boiler water wall according to claim 1 and vertical wall pipe, it is characterised in that:
Each spirally-wound tubes in first docking section dock the uniform dense arrangement of pipe fitting；Each tube panel butt tube of second docking section
The uniform dense arrangement of part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821545838.9U CN209054547U (en) | 2018-09-21 | 2018-09-21 | The spirally-wound tubes of boiler water wall and the transition structure of vertical wall pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821545838.9U CN209054547U (en) | 2018-09-21 | 2018-09-21 | The spirally-wound tubes of boiler water wall and the transition structure of vertical wall pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209054547U true CN209054547U (en) | 2019-07-02 |
Family
ID=67049246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821545838.9U Active CN209054547U (en) | 2018-09-21 | 2018-09-21 | The spirally-wound tubes of boiler water wall and the transition structure of vertical wall pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209054547U (en) |
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2018
- 2018-09-21 CN CN201821545838.9U patent/CN209054547U/en active Active
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