CN216557102U - Laser cladding corrosion-proof superheater tube - Google Patents
Laser cladding corrosion-proof superheater tube Download PDFInfo
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- CN216557102U CN216557102U CN202220076773.8U CN202220076773U CN216557102U CN 216557102 U CN216557102 U CN 216557102U CN 202220076773 U CN202220076773 U CN 202220076773U CN 216557102 U CN216557102 U CN 216557102U
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Abstract
The utility model discloses a laser cladding anti-corrosion superheater tube, which comprises: the device comprises a first conduit and a first bent pipe arranged at one end of the first conduit; a first connection pipe provided at one end of the first guide pipe; a second connection pipe provided at one end of the first connection pipe; a second elbow pipe provided at one end of the second connection pipe; a second conduit disposed at one end of the second elbow; the first guide pipe, the first bent pipe, the first connecting pipe, the second bent pipe and the second guide pipe are made of the same material, and the outer sides of the first guide pipe, the first bent pipe, the first connecting pipe, the second bent pipe and the second guide pipe are provided with laser cladding anticorrosive coatings. The surface of the superheater tube is provided with the anticorrosive coating with the iron content of less than 3%, the anticorrosive capability of the superheater tube is effectively improved, and the service life of the superheater tube is prolonged.
Description
Technical Field
The utility model relates to the technical field of laser cladding, in particular to a laser cladding anti-corrosion superheater tube.
Background
The waste incineration and waste comprehensive utilization power generation is an effective method for treating domestic waste and biomass waste at present, and has the characteristics of volume reduction, harmlessness and resource utilization. However, the burning process of the garbage and the biomass has serious corrosion to the heating surface of the boiler, so that the service life of the heating surface of the boiler is greatly shortened, and the frequent replacement of the heating surface causes trouble to the safe operation of the boiler. The superheater tubes are the parts of the boiler that further heat the steam temperature from the saturation temperature to the supersaturation temperature, and are important devices for ensuring the efficiency and output of the boiler. The superheater is generally arranged in a horizontal flue and is scoured and corroded by high-temperature and high-speed flue gas, and after the superheater is operated for a long time, the superheater tube is thinned or tube explosion occurs to cause non-stop of the boiler. Aiming at the problem of corrosion of a superheater tube, the traditional corrosion prevention process mainly comprises the following two steps: 1. the main mechanism of the method is that a compact, hard and chemically stable anticorrosive layer is generated by a coating at high temperature, and the defect is that the anticorrosive layer is mechanically combined with a superheater tube and is easy to fall off. 2. The surfacing technology is adopted to prevent corrosion, and the method has the advantages that the bonding mode of an anticorrosive coating and the superheater tube is changed into metallurgical bonding, and the bonding strength is high and the superheater tube is not easy to fall off. The defects are that the superheater tube has large heat quantity and deep heat affected zone in the surfacing processing process, which causes serious deformation of a matrix in the processing process and damages the superheater tube matrix.
The two technologies have the defects that an anticorrosive layer is easy to fall off, the damage to the base body of the superheater tube is large, and the like, can not effectively prolong the service life of the superheater tube, and can not be applied to boiler equipment with serious corrosion.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The utility model also aims to provide the laser cladding anti-corrosion superheater tube, which realizes the performance effect of stronger bearing capacity of the laser cladding anti-corrosion superheater tube and avoids the problem that a scaffold collapses due to insufficient bearing capacity of a single disc.
In order to achieve the above objects and other objects, the present invention adopts the following technical solutions:
a laser clad corrosion resistant superheater tube comprising:
the first bent pipe is arranged at one end of the first conduit;
a first connection pipe provided at one end of the first bent pipe;
a second connection pipe provided at one end of the first connection pipe;
a second elbow pipe provided at one end of the second connection pipe;
a second conduit disposed at one end of the second elbow; the first guide pipe, the first bent pipe, the first connecting pipe, the second bent pipe and the second guide pipe are made of the same material, and the outer sides of the first guide pipe, the first bent pipe, the first connecting pipe, the second bent pipe and the second guide pipe are provided with laser cladding anticorrosive coatings.
Preferably, first connector is installed to the one end of first pipe, first pipe and first return bend all with first connector welded connection, the second connector is installed to the one end of first return bend, and first return bend and first connecting pipe all with second connector welded connection.
Preferably, the third connector is installed to the one end of second pipe, second pipe and second return bend all with third connector welded connection, the fourth connector is installed to the one end of second return bend, second return bend and second connecting pipe all with fourth connector welded connection.
Preferably, a fifth connector is installed to the one end of first connecting pipe, first connecting pipe and second connecting pipe all with fifth connector welded connection, the fifth connector includes the second body, the outside of second body is provided with the annular and protects the tile, and the annular protects tile and second body welded connection.
Preferably, the first conduit comprises a first pipe body, and the first pipe body is attached to the laser cladding anticorrosive layer.
Preferably, install first support frame between first pipe and the first return bend, and first pipe and first return bend all with first support frame welded connection, install the second support frame between first return bend and the first connecting pipe, and first return bend and first connecting pipe all with second support frame welded connection, install the third support frame between second pipe and the second return bend, and second pipe and second return bend all with third support frame welded connection, install the fourth support frame between second return bend and the second connecting pipe, and second return bend and second connecting pipe all with fourth support frame welded connection.
The utility model at least comprises the following beneficial effects:
1. according to the utility model, Ni-Cr-Mo alloy powder is cladded on the outer wall of the superheater tube by a laser cladding technology, so that the surface of the superheater tube is provided with an anticorrosive layer with the iron content of less than 3%, the anticorrosive capability of the superheater tube is effectively improved, the service life of the superheater tube is prolonged, the characteristic of high laser beam gathering energy is effectively utilized, the outer wall of the superheater tube body is partially melted, and then the alloy powder forms a cladding layer which is metallurgically combined with the outer wall of the superheater tube body in the scanning of a laser beam, so that the formed anticorrosive layer has a more compact structure and is more tightly combined with the superheater tube body, once the anticorrosive layer prepared on the superheater tube body by the laser cladding technology fails, the anticorrosive layer can be repeatedly repaired, and the cost for replacing the superheater tube is reduced.
2. Through the first support frame that sets up, the second support frame, the setting of third support frame and fourth support frame, utilize first support frame to support first pipe and first return bend, utilize the second support frame to support first return bend and first connecting pipe, utilize the third support frame to support second pipe and second return bend, utilize the fourth support frame to support second return bend and first connecting pipe, thereby make the atress between the many pipelines even, can not receive external force and crooked, improve this superheater pipe overall structure's rigidity, make this superheater pipe more firm reliable.
Drawings
FIG. 1 is an elevational view of a laser clad corrosion resistant superheater tube provided by the present invention;
FIG. 2 is a top view of a first conduit provided by the present invention;
fig. 3 is a top view of a fifth connecting head provided by the present invention.
Detailed Description
The present invention is described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description.
As shown in fig. 1-3, a laser clad corrosion resistant superheater tube includes: a first conduit 1 and a first elbow 2 arranged at one end of the first conduit 1; a first connecting pipe 18 provided at one end of the first bend 2; a second connection pipe 19 provided at one end of the first connection pipe 18; a second elbow 4 provided at one end of the second connection pipe 19; a second conduit 3 provided at one end of the second bend 4; the first conduit 1, the first elbow pipe 2, the first connecting pipe 18, the second connecting pipe 19, the second elbow pipe 4 and the second conduit 3 are made of the same material, and the outer sides of the first conduit 1, the first elbow pipe 2, the first connecting pipe 18, the second connecting pipe 19, the second elbow pipe 4 and the second conduit 3 are provided with laser cladding anticorrosive coatings 15.
In the above scheme, the integrated pipeline formed by the first conduit, the first elbow pipe, the first connecting pipe, the second elbow pipe and the second conduit is the superheater pipe, and the first conduit, the first elbow pipe, the first connecting pipe, the second elbow pipe and the second conduit are all formed by the first pipe body and the laser cladding anticorrosive coating.
In a preferred scheme, first connector 5 is installed to the one end of first pipe 1, first pipe 1 and first return bend 2 all with first connector 5 welded connection, second connector 6 is installed to the one end of first return bend 2, and first return bend 2 and first connecting pipe 18 all with second connector 6 welded connection.
In the above scheme, the first conduit is connected with the first elbow through the first connector, and the first elbow is connected with the first connecting pipe through the second connector.
In a preferred scheme, third connector 7 is installed to the one end of second pipe 3, second pipe 3 and second return bend 4 all with third connector 7 welded connection, fourth connector 8 is installed to the one end of second return bend 4, second return bend 4 and second connecting pipe 19 all with fourth connector 8 welded connection.
In the above scheme, the second conduit is connected with the second bent pipe through the third connector, and the second bent pipe is connected with the second connecting pipe through the fourth connector.
In a preferred scheme, fifth connector 9 is installed to the one end of first connecting pipe 18, first connecting pipe 18 and second connecting pipe 19 all with fifth connector 9 welded connection, fifth connector 9 includes second body 17, the outside of second body 17 is provided with annular protection tile 16, and annular protection tile 16 and second body 17 welded connection.
In the above scheme, the first connecting pipe is connected with the second connecting pipe through the fifth connector, and the structures and materials of the first connector, the second connector, the third connector, the fourth connector and the fifth connector are the same.
In a preferred scheme, the first conduit 1 comprises a first pipe body 14, and the first pipe body 14 is attached to a laser cladding anticorrosive layer 15.
In the scheme, Ni-Cr-Mo alloy powder is cladded on the outer wall of the superheater tube by a laser cladding technology, so that the surface of the superheater tube is provided with an anticorrosive layer with the iron content of less than 3%, the anticorrosive capability of the superheater tube is effectively improved, the service life of the superheater tube is prolonged, the characteristic of high laser beam gathering energy is effectively utilized, the outer wall of the superheater tube body is partially melted, and then the alloy powder forms a cladding layer metallurgically combined with the outer wall of the superheater tube body in the scanning of a laser beam, so that the formed anticorrosive layer has a more compact structure and is more tightly combined with the superheater tube body, and once the anticorrosive layer prepared on the superheater tube body by the laser cladding technology fails, the anticorrosive layer can be repeatedly repaired, and the cost for replacing the superheater tube is reduced.
In a preferred scheme, install first support frame 10 between first pipe 1 and the first return bend 2, and first pipe 1 and first return bend 2 all with first support frame 10 welded connection, install second support frame 11 between first return bend 2 and the first connecting pipe 18, and first return bend 2 and first connecting pipe 18 all with second support frame 11 welded connection, install third support frame 12 between second pipe 3 and the second return bend 4, and second pipe 3 and second return bend 4 all with third support frame 12 welded connection, install fourth support frame 13 between second return bend 4 and the second connecting pipe 19, and second return bend 4 and second connecting pipe 19 all with fourth support frame 13 welded connection.
In the above scheme, utilize first support frame to support first pipe and first return bend, utilize the second support frame to support first return bend and first connecting pipe, utilize the third support frame to support second pipe and second return bend, utilize the fourth support frame to support second return bend and first connecting pipe, thereby make the atress between the many pipelines even, can not receive external force and crooked, improve this superheater pipe overall structure's rigidity, make this superheater pipe more firm reliable.
While embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (6)
1. A laser clad corrosion resistant superheater tube, comprising:
the first bent pipe is arranged at one end of the first conduit;
a first connection pipe provided at one end of the first bent pipe;
a second connection pipe provided at one end of the first connection pipe;
a second elbow pipe provided at one end of the second connection pipe;
a second conduit disposed at one end of the second elbow; the first guide pipe, the first bent pipe, the first connecting pipe, the second bent pipe and the second guide pipe are made of the same material, and the outer sides of the first guide pipe, the first bent pipe, the first connecting pipe, the second bent pipe and the second guide pipe are provided with laser cladding anticorrosive coatings.
2. The laser cladding anti-corrosion superheater tube of claim 1, wherein a first connector is mounted at one end of the first conduit, the first conduit and the first elbow are both welded to the first connector, a second connector is mounted at one end of the first elbow, and the first elbow and the first connector are both welded to the second connector.
3. The laser cladding anti-corrosion superheater tube of claim 1, wherein a third connector is installed at one end of the second conduit, the second conduit and the second elbow are both welded to the third connector, a fourth connector is installed at one end of the second elbow, and the second elbow and the second connecting tube are both welded to the fourth connector.
4. The laser cladding anti-corrosion superheater tube of claim 1, wherein a fifth connector is mounted at one end of the first connecting tube, the first connecting tube and the second connecting tube are both connected with the fifth connector in a welding manner, the fifth connector comprises a second tube body, an annular protective tile is arranged on the outer side of the second tube body, and the annular protective tile is connected with the second tube body in a welding manner.
5. The laser clad anti-corrosion superheater tube of claim 1, wherein the first conduit comprises a first tubular body that is conformed to a laser clad anticorrosive layer.
6. The laser cladding anti-corrosion superheater tube of claim 1, wherein a first support bracket is installed between the first conduit and the first elbow, and both the first conduit and the first elbow are welded to the first support bracket, a second support bracket is installed between the first elbow and the first connection tube, and both the first elbow and the first connection tube are welded to the second support bracket, a third support bracket is installed between the second conduit and the second elbow, and both the second conduit and the second elbow are welded to the third support bracket, a fourth support bracket is installed between the second elbow and the second connection tube, and both the second elbow and the second connection tube are welded to the fourth support bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220076773.8U CN216557102U (en) | 2022-01-13 | 2022-01-13 | Laser cladding corrosion-proof superheater tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220076773.8U CN216557102U (en) | 2022-01-13 | 2022-01-13 | Laser cladding corrosion-proof superheater tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216557102U true CN216557102U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220076773.8U Active CN216557102U (en) | 2022-01-13 | 2022-01-13 | Laser cladding corrosion-proof superheater tube |
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| Country | Link |
|---|---|
| CN (1) | CN216557102U (en) |
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2022
- 2022-01-13 CN CN202220076773.8U patent/CN216557102U/en active Active
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