CN218755930U - Online heat treatment device for heat exchanger tube of in-service boiler - Google Patents
Online heat treatment device for heat exchanger tube of in-service boiler Download PDFInfo
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- CN218755930U CN218755930U CN202222850458.9U CN202222850458U CN218755930U CN 218755930 U CN218755930 U CN 218755930U CN 202222850458 U CN202222850458 U CN 202222850458U CN 218755930 U CN218755930 U CN 218755930U
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Abstract
The utility model relates to a metal pipeline surface heat treatment technical field provides an online heat treatment device of boiler heat exchanger pipe on active service, includes at least: the heat treatment system comprises an induction heating belt, wherein the induction heating belt is in a cylindrical structure, an inner cavity of the cylindrical structure forms a heating cavity, and the heating cavity can wrap at least part of a tube body of the heat exchanger tube so as to carry out heat treatment on the heat exchanger tube; and the traction system is connected with the induction heating belt and is suitable for driving the induction heating belt to move along the axial direction of the heat exchanger tube. The on-line heat treatment device for the heat exchanger tube of the in-service boiler provided by the utility model can carry out heat treatment on the tube of the heat exchanger on line so as to improve the high temperature resistance and oxidation corrosion resistance of the heat exchanger tube; in addition, in the heat treatment process, pipelines do not need to be disassembled, cut, welded, assembled and installed one by one, a large number of welding seams and defects are avoided, potential safety hazard heat is left, the treatment cost is lower, and the efficiency is higher.
Description
Technical Field
The utility model relates to a metal pipeline surface heat treatment technical field, concretely relates to online heat treatment device of boiler heat exchanger pipe on active service.
Background
The problems of oxidation and corrosion of the surface of the heat exchanger tube at the high-temperature section of the boiler troubles the safe operation of a thermal power generating unit for a long time, the specific gravity of the accidents of tube blocking and tube explosion caused by the problems is higher in the unplanned shutdown of the thermal power generating unit, and the problems of oxidation and corrosion of the heat exchanger tube of the boiler under higher steam parameters are more severe along with the development of the advanced supercritical thermal power technology at 630-700 ℃. Aiming at the characteristics and the using environment of a heat exchanger tube of a boiler of a thermal power generating unit, a coating material capable of thoroughly solving the problem of oxidation corrosion of the heat exchanger tube and a corresponding preparation process are developed at present, however, the most critical link of the preparation process is that the heat exchanger tube needs to be correspondingly heat treated to obtain an effective high-temperature oxidation corrosion resistant coating structure.
Boiler heat exchanger among the prior art, it is by single small-bore boiler pipe through welding each other and constitutes, if will carry out heat treatment to the heat exchanger pipe, need all to pull down the pipeline and cut into the single back just can adopt traditional heat treatment mode to go on one by one, and not only with high costs, inefficiency, the pipeline after the heat treatment completion need weld again, assemble and install, and a large amount of welding seams and defect leave huge potential safety hazard to making the labour again of heat exchanger pipe.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in the boiler heat exchanger among the prior art, it is formed through welding mutually by single small-bore boiler pipe, if should implement the heat treatment to the heat exchanger pipe, need to pull down the pipeline and all cut into and just can adopt traditional heat treatment mode to go on one by one after single, and is not only with high costs, low efficiency, and the pipeline after the heat treatment is accomplished need to weld again, equipment and installation, a large amount of welding seams and defect make labour again and have left huge potential safety hazard to the heat exchanger pipe, thereby provide an online heat treatment device of boiler heat exchanger pipe in labour.
In order to solve the technical problem, the technical scheme of the utility model as follows:
an in-service boiler heat exchanger tube on-line heat treatment device at least comprises: the heat treatment system comprises an induction heating belt, the induction heating belt is of a cylindrical structure, an inner cavity of the cylindrical structure forms a heating cavity, and the heating cavity can wrap at least part of a tube body of the heat exchanger tube so as to carry out heat treatment on the heat exchanger tube; and the traction system is connected with the induction heating belt and is suitable for driving the induction heating belt to move along the axial direction of the heat exchanger tube.
Further, the thermal processing system includes an induction heating belt; the induction heating belt is of a cylindrical structure, and an inner cavity of the cylindrical structure forms the heating cavity; the induction heating belt is connected with the traction system.
Further, the induction heating belt comprises a first half cylinder and a second half cylinder, the first half cylinder and the second half cylinder are connected through a hinge shaft to form a split structure, and the opening and closing positions of the first half cylinder and the second half cylinder are connected through a buckle.
Furthermore, a plurality of temperature measuring points are arranged at intervals along the axial direction of the induction heating belt, and each temperature measuring point is provided with a temperature measuring sensor.
Furthermore, the traction system comprises a support frame, a connecting rod and a power mechanism; the support frame is of an annular structure and is suitable for being sleeved on the heat exchanger tube; one end of the connecting rod is connected with the supporting frame, and the other end of the connecting rod is connected with the induction heating belt; the power mechanism is arranged on the support frame and is suitable for driving the support frame to move along the axial direction of the heat exchanger tube, and the support frame drives the induction heating belt to move synchronously through the connecting rod.
Furthermore, the power mechanism comprises a roller, a wheel support and a driving motor; the base of the driving motor is connected with the inner wall of the support frame; one end of the wheel support is connected with the driving motor; the roller is rotatably arranged at one end, far away from the driving motor, of the roller support, and the roller is driven by the driving motor to roll on the outer side wall of the heat exchanger tube.
Furthermore, the power mechanism also comprises a hydraulic device; the connecting end of the hydraulic device is connected with the driving motor, the telescopic end of the hydraulic device is connected with the wheel support, and the hydraulic device is suitable for driving the roller to move along the radial direction of the supporting frame.
Furthermore, the power mechanism also comprises a fixing bolt; the base of the driving motor is arranged on the inner wall of the supporting frame through the fixing bolt.
Furthermore, the online heat treatment device for the heat exchanger tube of the in-service boiler also comprises a control cabinet; the driving motor is electrically connected with the control cabinet, and the control cabinet can adjust the rotating speed of the driving motor so as to control the advancing speed of the support frame; the induction heating area with the switch board electricity is connected, the switch board can adjust induction heating area's heating power to control the temperature in the heating chamber.
The utility model discloses technical scheme has following advantage:
the on-line heat treatment device for the heat exchanger tube of the in-service boiler provided by the utility model can carry out heat treatment on the tube of the heat exchanger on line so as to improve the high temperature resistance and oxidation corrosion resistance of the heat exchanger tube; in addition, in the heat treatment process, pipelines do not need to be disassembled, cut, welded, assembled and installed one by one, a large number of welding seams and defects are avoided, potential safety hazard heat is left, the treatment cost is lower, and the efficiency is higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of an in-service boiler heat exchanger tube on-line heat treatment apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a traction system in an in-service boiler heat exchanger tube in-line heat treatment apparatus according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a power mechanism in an in-service boiler heat exchanger tube on-line heat treatment device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an induction heating zone in an in-service boiler heat exchanger tube in-line heat treatment apparatus according to an embodiment of the present invention;
fig. 5 is a schematic view of an in-service boiler heat exchanger tube in an in-line heat treatment apparatus according to an embodiment of the present invention, illustrating an operating state of a induction heating zone.
1. A traction system; 2. a heat treatment system; 3. a control cabinet; 4. a heat exchanger tube;
11. a support frame; 12. a power mechanism; 13. a connecting rod;
21. an induction heating belt; 22. buckling; 23. connecting holes; 24. a temperature measuring sensor;
31. a power supply signal line;
121. a roller; 122. a wheel support; 123. a hydraulic device; 124. a drive motor;
125. and (5) fixing the bolt.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
FIG. 1 is a schematic diagram of an in-service boiler heat exchanger tube on-line heat treatment apparatus according to an embodiment of the present invention; as shown in fig. 1, the present embodiment provides an in-service boiler heat exchanger tube on-line heat treatment apparatus, which at least includes: the heat treatment system 2 comprises an induction heating belt 21, wherein the induction heating belt 21 is in a cylindrical structure, a heating cavity is formed in an inner cavity of the cylindrical structure, and the heating cavity can wrap at least part of a pipe body of the heat exchanger pipe 4 so as to carry out heat treatment on the heat exchanger pipe 4; the traction system 1, connected to the induction heating belt 21, is adapted to drive the induction heating belt 21 in a movement along the axial direction of the heat exchanger tube 4. Wherein the induction heating belt 21 may generate an alternating magnetic field, and the heat exchanger tube 4 generates an eddy current in the alternating magnetic field, thereby heating the heat exchanger tube 4.
The embodiment provides an online heat treatment device for an in-service boiler heat exchanger tube, which can perform heat treatment on the heat exchanger tube online so as to improve the high-temperature resistance and oxidation corrosion resistance of the heat exchanger tube 4; in addition, in the heat treatment process, pipelines do not need to be disassembled, cut, welded, assembled and installed one by one, a large number of welding seams and defects are avoided, potential safety hazard heat is left, the treatment cost is lower, and the efficiency is higher.
Fig. 4 is a schematic view of an induction heating zone in an in-service boiler heat exchanger tube in an in-line heat treatment apparatus according to an embodiment of the present invention; FIG. 5 is a schematic view of an in-service boiler heat exchanger tube in an in-line heat treatment apparatus according to an embodiment of the present invention, illustrating a working state of a induction heating zone; as shown in fig. 4 and 5, the heat treatment system 2 includes an induction heating belt 21; the induction heating belt 21 is of a cylindrical structure, and a heating cavity is formed in an inner cavity of the cylindrical structure; for example, the heating chamber may be dimensioned to fit into a single heat exchanger tube 4, the heat exchanger tubes 4 being heated one by one during the heat treatment.
Preferably, the induction heating belt 21 includes a first half cylinder and a second half cylinder, the first half cylinder and the second half cylinder are connected by a hinge shaft to form a split structure, and the split part of the first half cylinder and the second half cylinder is connected by a buckle 22. For example, the end surfaces of the first half cylinder and the second half cylinder are both semicircular in shape. For example, the catch 22 may be a metal catch 22. For example, a plurality of the snaps 22 may be provided at intervals in the axial direction of the induction heating belt 21. The buckle 22 may be replaced by other lockable connecting members, and is not limited herein. When the induction heating belt 21 is installed, the buckle 22 can be opened, the induction heating belt 21 is installed from the side surface of the heat exchanger tube 4, and then the buckle 22 is locked, so that the induction heating belt 21 wraps the heat exchanger tube 4.
A plurality of temperature measuring points are arranged at intervals along the axial direction of the induction heating belt 21, and each temperature measuring point is provided with a temperature measuring sensor 24. Wherein the induction heating belt 21 is connected to the traction system 1. For example, a plurality of blind holes may be provided in the end face of the induction heating belt 21, the blind holes extending in the axial direction of the induction heating belt 21, and one temperature measuring sensor 24 may be installed in each blind hole. For example, four blind holes may be provided at intervals along the circumferential direction of the induction heating belt 21, and the depth of each blind hole is different, so that the data collected by the temperature measuring sensor 24 may be more comprehensive and accurate. For example, blind holes may be located near the inside wall of the induction heating belt 21 so that the measurement side temperature more closely conforms to the temperature of the heating chamber.
FIG. 2 is a schematic diagram of a traction system in an in-service boiler heat exchanger tube in-line heat treatment apparatus according to an embodiment of the present invention; fig. 3 is a schematic diagram of a power mechanism in an in-service boiler heat exchanger tube on-line heat treatment device according to an embodiment of the present invention; as shown in fig. 2 and 3, the traction system 1 includes a support frame 11, a connecting rod 13 and a power mechanism 12; the support frame 11 is of an annular structure, and the support frame 11 is suitable for being sleeved on the heat exchanger tube 4; one end of the connecting rod 13 is connected to the supporting frame 11, and the other end is connected to the induction heating belt 21. Wherein, can set up the screw hole at the terminal surface of support frame 11, the corresponding position of induction heating area 21's terminal surface also sets up utensil screwed connecting hole 23, and the surface of connecting rod 13 sets up the external screw thread for between support frame 11 and connecting rod 13, all adopt threaded connection between induction heating area 21 and the connecting rod 13, during the installation, support frame 11 is located induction heating area 21's top, and can set up a plurality of connecting rods 13 along support frame 11's circumference. With the arrangement, the outer wall of the heat exchanger tube 4 can be prevented from being scratched by the swinging phenomenon of the induction heating belt 21 due to the fixing action of the connecting rod 13.
The power mechanism 12 is disposed on the support frame 11 and adapted to drive the support frame 11 to move along the axial direction of the heat exchanger tube 4, and the support frame 11 drives the induction heating belt 21 to move synchronously through the connecting rod 13.
Preferably, power mechanism 12 includes a roller 121, a wheel support 122, and a drive motor 124; the base of the driving motor 124 is connected with the inner wall of the support frame 11; one end of the wheel support 122 is connected to a driving motor 124; the roller 121 is rotatably disposed on one end of the wheel support 122 away from the driving motor 124 through a wheel shaft, and the roller 121 is driven by the driving motor 124 to roll on the outer side wall of the heat exchanger tube 4.
Wherein, the power mechanism 12 further comprises a hydraulic device 123; the connection end of the hydraulic device 123 is connected with the driving motor 124, the telescopic end of the hydraulic device 123 is connected with the wheel support 122, and the hydraulic device 123 is suitable for driving the roller 121 to move along the radial direction of the support frame 11. Wherein, power mechanism 12 further includes a fixing bolt 125; the base of the driving motor 124 is disposed on the inner wall of the supporting frame 11 through a fixing bolt 125.
For example, a threaded hole may be formed in the inner wall of the support frame 11, one end of the fixing bolt 125 is screwed with the support frame 11, and the other end is welded or screwed with the base tail of the driving motor 124. The connecting ends of the hydraulic devices 123 can be fixed on the surface of the driving motor 124, which faces away from the fixing bolt 125, two hydraulic devices 123 can be arranged, the telescopic ends of the two hydraulic devices 123 are respectively arranged corresponding to the two ends of the wheel support 122, when the distance between the roller 121 and the heat exchanger tube 4 needs to be adjusted, the telescopic ends of the hydraulic devices 123 extend out, and the wheel support 122 and the roller 121 thereon are driven to be close to the heat exchanger tube 4. The hydraulic device 123 may be replaced by other telescopic devices such as a cylinder. The driving motor 124 may be a micro motor.
For example, three rows of the power mechanisms 12, each including three power mechanisms 12, may be provided at equal intervals along the circumferential direction of the inner wall of the support frame 11, so as to improve the traction effect.
The online heat treatment device for the heat exchanger tube of the in-service boiler further comprises a control cabinet 3; the driving motor 124 is electrically connected with the control cabinet 3, and the control cabinet 3 can adjust the rotating speed of the driving motor 124 to control the advancing speed of the support frame 11; the induction heating belt 21 is electrically connected with the control cabinet 3, and the control cabinet 3 can adjust the heating power of the induction heating belt 21 to control the temperature in the heating cavity. The control cabinet 3 and the temperature sensor 24 can be in signal connection, and can receive temperature information collected by the temperature sensor 24. And, the switch board 3 has the display screen, can show data in real time. For example, an external power source may be connected by a power supply signal line 31 to the electrical components within the in-line heat treatment apparatus of the in-service boiler heat exchanger tubes 4.
During heat treatment, firstly, the support frame 11 is arranged on the heat exchanger tube 4, meanwhile, the power signal wire 31 is communicated with an external power supply, the roller 121 is tightly attached to the outer wall of the heat exchanger tube 4 through the hydraulic device 123, and the support frame 11 is fixed by utilizing the friction force formed by the roller 121 and the outer wall of the heat exchanger tube 4; then installing the induction heating belt 21 provided with the temperature measuring sensor 24 below the support frame 11, clamping all the buckles 22, connecting the support frame 11 and the induction heating belt 21 by using the connecting rod 13 and the connecting hole 23, and cutting the outer wall of the heat exchanger tube 4 by the induction heating belt 21 after locking the connecting rod 13 without swinging; finally, according to the required heat treatment temperature and time, automatic programs such as the advancing speed, the induction heating power, the temperature control and the like are set on the intelligent control cabinet 3, the start button is pressed, and the roller 121 starts to crawl upwards or downwards according to the set running speed under the driving of the driving motor 124, so that the induction heating belt 21 is driven to crawl upwards or downwards, and the heat treatment process of the heat exchanger pipe 4 is completed.
In conclusion, the in-service boiler heat exchanger tube online heat treatment device can directly dynamically and rapidly complete the high-temperature heat treatment of a single heat exchanger tube 4 on the boiler heat exchanger online, perfects and optimizes the preparation process requirement of a high-temperature coating technology on a boiler tube panel, and provides equipment feasibility for realizing the industrial application of a high-temperature oxidation resistant coating; the prepared coating has excellent quality, the heat treatment process is simple to operate, the use is convenient, the economic cost is low, and the time and the efficiency are saved; meanwhile, potential safety hazards and economic losses caused by dismounting, welding, transporting, installing and the like of the boiler tube panels are avoided.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (8)
1. An in-service boiler heat exchanger tube on-line heat treatment device is characterized by at least comprising:
the heat treatment system comprises an induction heating belt, wherein the induction heating belt is in a cylindrical structure, an inner cavity of the cylindrical structure forms a heating cavity, and the heating cavity can wrap at least part of a tube body of the heat exchanger tube so as to carry out heat treatment on the heat exchanger tube;
and the traction system is connected with the induction heating belt and is suitable for driving the induction heating belt to move along the axial direction of the heat exchanger tube.
2. In-service boiler heat exchanger tube in-line heat treatment apparatus according to claim 1,
the induction heating belt comprises a first half cylinder and a second half cylinder, the first half cylinder is connected with the second half cylinder through a hinged shaft to form a split structure, and the opening and closing position of the first half cylinder and the second half cylinder is connected through a buckle.
3. The in-service boiler heat exchanger tube in-line heat treatment apparatus of claim 1,
a plurality of temperature measuring points are arranged at intervals along the axial direction of the induction heating belt, and each temperature measuring point is provided with a temperature measuring sensor.
4. In-service boiler heat exchanger tube in-line heat treatment apparatus according to any of claims 1 to 3,
the traction system comprises a support frame, a connecting rod and a power mechanism;
the support frame is of an annular structure and is suitable for being sleeved on the heat exchanger tube;
one end of the connecting rod is connected with the supporting frame, and the other end of the connecting rod is connected with the induction heating belt;
the power mechanism is arranged on the support frame and is suitable for driving the support frame to move along the axial direction of the heat exchanger tube, and the support frame drives the induction heating belt to move synchronously through the connecting rod.
5. The in-service boiler heat exchanger tube in-line heat treatment apparatus of claim 4,
the power mechanism comprises a roller, a wheel support and a driving motor;
the base of the driving motor is connected with the inner wall of the support frame;
one end of the wheel support is connected with the driving motor;
the roller is rotatably arranged at one end, far away from the driving motor, of the wheel support, and the roller is driven by the driving motor to roll on the outer side wall of the heat exchanger tube.
6. The in-service boiler heat exchanger tube in-line heat treatment apparatus of claim 5,
the power mechanism also comprises a hydraulic device;
the connecting end of the hydraulic device is connected with the driving motor, the telescopic end of the hydraulic device is connected with the wheel support, and the hydraulic device is suitable for driving the roller to move along the radial direction of the support frame.
7. The in-service boiler heat exchanger tube in-line heat treatment apparatus of claim 5,
the power mechanism also comprises a fixing bolt;
the base of the driving motor is arranged on the inner wall of the support frame through the fixing bolt.
8. The in-service boiler heat exchanger tube in-line heat treatment apparatus of claim 5,
the device also comprises a control cabinet;
the driving motor is electrically connected with the control cabinet, and the control cabinet can adjust the rotating speed of the driving motor so as to control the advancing speed of the support frame;
the induction heating area with the switch board electricity is connected, the switch board can adjust induction heating area's heating power to control the temperature in the heating chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222850458.9U CN218755930U (en) | 2022-10-27 | 2022-10-27 | Online heat treatment device for heat exchanger tube of in-service boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222850458.9U CN218755930U (en) | 2022-10-27 | 2022-10-27 | Online heat treatment device for heat exchanger tube of in-service boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218755930U true CN218755930U (en) | 2023-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222850458.9U Active CN218755930U (en) | 2022-10-27 | 2022-10-27 | Online heat treatment device for heat exchanger tube of in-service boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218755930U (en) |
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2022
- 2022-10-27 CN CN202222850458.9U patent/CN218755930U/en active Active
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