CN206018586U - Prevent super critical boiler finishing superheater heating surface tube mechanical wear system - Google Patents
Prevent super critical boiler finishing superheater heating surface tube mechanical wear system Download PDFInfo
- Publication number
- CN206018586U CN206018586U CN201620714438.0U CN201620714438U CN206018586U CN 206018586 U CN206018586 U CN 206018586U CN 201620714438 U CN201620714438 U CN 201620714438U CN 206018586 U CN206018586 U CN 206018586U
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- CN
- China
- Prior art keywords
- corrugated plating
- mechanical wear
- heating surface
- super critical
- finishing superheater
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model is related to one kind prevents super critical boiler finishing superheater heating surface tube mechanical wear system, together with positioning wedged block is fixedly installed with tube panel positioning pipe, shockproof corrugated plating is provided with above the heated vertical facial canal, the shockproof corrugated plating includes that the arc convex surface arranged with the heated vertical facial canal gap, the shockproof corrugated plating are welded together with positioning wedged block.The present embodiment, extends the service life of heating surface pipe, improves the utilization rate of equipment, it is ensured that the safe and reliable long-term operation of unit.
Description
Technical field
The utility model is related to one kind prevents super critical boiler finishing superheater heating surface tube mechanical wear system.
Background technology
The upper and lower of domestic 600MW supercritical boilers finishing superheater heating surface tube every tube panel of group is equipped with
Positioning pipe, plays a part of to prevent tube panel from falling out as high temperature action causes to deform.Existing flexural deformation discharged by long-play pipe,
The phenomenon that falls out.Due to being provided with positioning wedged block at the positioning pipe of tube panel upper and lower part, as the vibrations of pipe row cause to manage in operation
Son and the mechanical wear (such as Fig. 1) of positioning wedged block, accelerate the abrasion of vertical tube, affect the life-span of pipe, have a strong impact on equipment
Normal operation.
In view of above-mentioned defect, the positive in addition research and innovation of the design people prevents super critical boiler to founding one kind
Finishing superheater heating surface tube mechanical wear system so as to more the value in industry.
Utility model content
For solving above-mentioned technical problem, the purpose of this utility model is to provide one kind and has effectively administered boiler finishing superheater
Vertical tube prevents super critical boiler finishing superheater heating surface tube mechanical wear system with the wear problem of locating piece.
The utility model prevents super critical boiler finishing superheater heating surface tube mechanical wear system, positioning wedged block and tube panel
Positioning pipe is fixedly installed together, is provided with shockproof corrugated plating above the heated vertical facial canal, and the shockproof corrugated plating includes
The arc convex surface arranged with the heated vertical facial canal gap, the shockproof corrugated plating are welded together with positioning wedged block.
Further, the shockproof corrugated plating is made up of with circular arc concave surface the arc convex surface being connected with each other, and the circular arc is convex
The diameter in face is arranged according to the diameter of heated vertical facial canal, and the diameter of the circular arc concave surface is arranged according to the size of positioning wedged block.
Further, the gap between the convex surface of the shockproof corrugated plating and the heated vertical facial canal is 1mm to 2mm.
Further, the concave surface of the shockproof corrugated plating is provided with the hole clipping being adapted with the profile of the positioning wedged block,
The hole clipping is set on the positioning wedged block and is welded together with positioning wedged block.
Further, the central angle of the arc convex surface of the shockproof corrugated plating is 30 ° to 60 °.
Further, the central angle of the circular arc concave surface of the shockproof corrugated plating is 30 ° to 45 °.
Further, the nickelic stainless refractory steels of material selection Cr20Ni14Si2 of the shockproof corrugated plating, with higher
Elevated temperature strength and non-oxidizability, sensitive to sulfur-bearing atmosphere, there are brittle tendency, tensile strength at 600 DEG C -800 DEG C：590MPa、
Hardness：≤187.
By such scheme, the utility model at least has advantages below：
Live operability
Increase device installation more convenient, and using the operation thermal power generation boiler that goes into operation at present.
Economic benefit
About 100,000 yuan of the gross investment of the plant modification, can effectively prevent the horizontal heating surface of boiler tail from connecting with column pipe
Connect the abrasion at place.Once there is the position abrasion, cause boiler leakage, cause unit outage, it will cause economic loss about 50
Wan Yuan.
Maintenance duration and expense
Device installation is more convenient, and the duration is shorter, generally 10 days, and fee of material, labour cost are total 50,000 yuan.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, with preferred embodiment of the present utility model and coordinate accompanying drawing detailed below
Describe in detail bright as after.
Description of the drawings
Fig. 1 finishing superheater heating surfaces vertical tube and the schematic diagram of locating piece；
Fig. 2 prevents super critical boiler finishing superheater heating surface tube mechanical wear system integral installation schematic diagram；
The shockproof corrugated plating schematic diagrames of Fig. 3.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used for the utility model to be described, but is not limited to scope of the present utility model.
Referring to Fig. 2 and Fig. 3, the present embodiment prevents super critical boiler finishing superheater heating surface tube mechanical wear system, fixed
Together with position fixture block 3 is fixedly installed with tube panel positioning pipe 1, the top of the heated vertical facial canal 2 is provided with shockproof corrugated plating 4, institute
The arc convex surface 41 that shockproof corrugated plating includes arranging, the shockproof corrugated plating and locator card is stated with the heated vertical facial canal gap
Block welding is together.
In the present embodiment, the shockproof corrugated plating is made up of with circular arc concave surface the arc convex surface being connected with each other, the circular arc
The diameter of convex surface is arranged according to the diameter of heated vertical facial canal, and the diameter of the circular arc concave surface is set according to the size of positioning wedged block
Put.The concave surface of the shockproof corrugated plating is provided with the hole clipping 42 being adapted with the profile of the positioning wedged block, and the hole clipping is arranged
Weld together with positioning wedged block on the positioning wedged block.
The nickelic stainless refractory steels of material selection Cr20Ni14Si2 of the shockproof corrugated plating, with higher elevated temperature strength
And non-oxidizability, sensitive to sulfur-bearing atmosphere, there are brittle tendency, tensile strength at 600 DEG C -800 DEG C：590MPa, hardness：≤
187.
Increase corrugated sheet and pipe contact area, and corrugated sheet is welded and fixed with positioning pipe positioning wedged block, and waveform
Plate is brought into close contact with vertical tube so that the steam-energy in vertical tube plays cooling effect to corrugated sheet, prevents corrugated sheet in burner hearth
Scaling loss under hot environment, improves the service life of corrugated sheet, so not only effectively improves pipe deformation and goes out row, it also avoid
Positioning wedged block touches mill to pipe.
Domestic 600MW supercritical boilers finishing superheater heated vertical facial canal is adopted with the locating piece at tube panel positioning pipe
After with fixing device, the abrasion of heated vertical facial canal mitigates, and extends the service life of heating surface pipe, improves equipment
Utilization rate, it is ensured that the safe and reliable long-term operation of unit.
In the various embodiments described above, the gap between the convex surface of the shockproof corrugated plating and the heated vertical facial canal is 1mm
To 2mm.
In the various embodiments described above, the central angle of the arc convex surface of the shockproof corrugated plating is 30 ° to 60 °.The anti-seismic wave
The central angle of the circular arc concave surface of card is 30 ° to 45 °.
The above is only preferred embodiment of the present utility model, is not limited to the utility model, it is noted that
For those skilled in the art, on the premise of without departing from the utility model know-why, can also do
Go out some improvement and modification, these improvement and modification also should be regarded as protection domain of the present utility model.
Claims (7)
1. one kind prevents super critical boiler finishing superheater heating surface tube mechanical wear system, it is characterised in that positioning wedged block with
Tube panel positioning pipe is fixedly installed together, is provided with shockproof corrugated plating, the shockproof corrugated plating above the heated vertical facial canal
Including the arc convex surface arranged with the heated vertical facial canal gap, the shockproof corrugated plating is welded together with positioning wedged block.
2. according to claim 1 super critical boiler finishing superheater heating surface tube mechanical wear system, its feature are prevented
Be, the shockproof corrugated plating is made up of with circular arc concave surface the arc convex surface being connected with each other, the diameter of the arc convex surface according to
The diameter of heated vertical facial canal is arranged, and the diameter of the circular arc concave surface is arranged according to the size of positioning wedged block.
3. according to claim 1 super critical boiler finishing superheater heating surface tube mechanical wear system, its feature are prevented
It is, the gap between the convex surface of the shockproof corrugated plating and the heated vertical facial canal is 1mm to 2mm.
4. according to claim 1 super critical boiler finishing superheater heating surface tube mechanical wear system, its feature are prevented
It is, the concave surface of the shockproof corrugated plating is provided with the hole clipping being adapted with the profile of the positioning wedged block, and the hole clipping is arranged
Weld together with positioning wedged block on the positioning wedged block.
5. according to claim 1 super critical boiler finishing superheater heating surface tube mechanical wear system, its feature are prevented
It is, the central angle of the arc convex surface of the shockproof corrugated plating is 30 ° to 60 °.
6. according to claim 1 super critical boiler finishing superheater heating surface tube mechanical wear system, its feature are prevented
It is, the central angle of the circular arc concave surface of the shockproof corrugated plating is 30 ° to 45 °.
7. according to claim 1 super critical boiler finishing superheater heating surface tube mechanical wear system, its feature are prevented
It is, the nickelic stainless refractory steels of material selection Cr20Ni14Si2 of the shockproof corrugated plating, with higher elevated temperature strength and anti-
Oxidisability, sensitive to sulfur-bearing atmosphere, there are brittle tendency, tensile strength at 600 DEG C -800 DEG C：590MPa, hardness：≤187.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620714438.0U CN206018586U (en) | 2016-06-30 | 2016-06-30 | Prevent super critical boiler finishing superheater heating surface tube mechanical wear system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620714438.0U CN206018586U (en) | 2016-06-30 | 2016-06-30 | Prevent super critical boiler finishing superheater heating surface tube mechanical wear system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206018586U true CN206018586U (en) | 2017-03-15 |
Family
ID=58244169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620714438.0U Expired - Fee Related CN206018586U (en) | 2016-06-30 | 2016-06-30 | Prevent super critical boiler finishing superheater heating surface tube mechanical wear system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206018586U (en) |
-
2016
- 2016-06-30 CN CN201620714438.0U patent/CN206018586U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 Termination date: 20170630 |