CN220132301U - Special-shaped joint welding seam heat treatment system - Google Patents
Special-shaped joint welding seam heat treatment system Download PDFInfo
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- CN220132301U CN220132301U CN202320959656.0U CN202320959656U CN220132301U CN 220132301 U CN220132301 U CN 220132301U CN 202320959656 U CN202320959656 U CN 202320959656U CN 220132301 U CN220132301 U CN 220132301U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 114
- 238000003466 welding Methods 0.000 title claims abstract description 51
- 238000009529 body temperature measurement Methods 0.000 claims description 9
- 210000001015 abdomen Anatomy 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a heat treatment system for special-shaped joint welding seams, which comprises a main heating device and auxiliary heating devices, wherein the main heating device is arranged on two sides with the special-shaped joint welding seams as the center, and the auxiliary heating devices are arranged on the special-shaped sides of the special-shaped joint welding seams; the temperature control system comprises a temperature measuring module, the temperature measuring module is arranged in a temperature measuring area, the temperature monitoring area is positioned in equidistant ranges on two sides of the welding seam of the special-shaped joint, the temperature measuring module is electrically connected with a temperature control module, control signals of the temperature control module are connected with the main heating device and the auxiliary heating device, and feedback signals of a first temperature control unit of the main heating device and a second temperature control unit of the auxiliary heating device are connected with the temperature control module. According to the utility model, the main heating device and the auxiliary heating device are used for synchronous heating, and the auxiliary heating device is controlled by temperature, so that the heat treatment requirement of the special-shaped joint is met.
Description
Technical Field
The utility model relates to the technical field of special-shaped joint weld joint heat treatment systems.
Background
For special-shaped joints, such as T-shaped three-way welding joints, due to asymmetric heat transfer structures at two sides of a welding line, in the process of local postweld heat treatment, due to structural and material reasons, asymmetric heat conduction at two sides of the welding line can exist at a certain point of the welding line, namely, the heat transfer in three directions, namely, the transverse direction, the longitudinal direction and the thickness direction, and the temperature field has the following characteristics: the highest temperature deviates from the heating center, a longitudinal temperature gradient exists, a rapid temperature gradient exists locally, and temperature fields at two sides of the welding line are asymmetric, so that the difficulty of heat treatment of the special-shaped joint is high, and the heat treatment is difficult to reach the standard.
Disclosure of Invention
The utility model aims to: in order to overcome the defects in the prior art, the utility model provides the special-shaped joint welding seam heat treatment system, which synchronously heats the special-shaped joint welding seam through the main heating device and the auxiliary heating device, and controls the auxiliary heating device through temperature so as to meet the heat treatment requirement of the special-shaped joint.
The technical scheme is as follows: in order to achieve the above object, the heat treatment system for the special-shaped joint weld joint of the present utility model comprises a main heating device and an auxiliary heating device, wherein the main heating device is arranged on two sides with the special-shaped joint weld joint as a center, and the auxiliary heating device is arranged on the special-shaped side of the special-shaped joint weld joint; the temperature control system comprises a temperature measuring module, the temperature measuring module is arranged in a temperature measuring area, the temperature measuring area is positioned in equidistant ranges on two sides of the welding seam of the special-shaped joint, the temperature measuring module is electrically connected with a temperature control module, control signals of the temperature control module are connected with the main heating device and the auxiliary heating device, and feedback signals of a first temperature control unit of the main heating device and a second temperature control unit of the auxiliary heating device are connected with the temperature control module.
Further, the main heating device comprises a plurality of heating units, a plurality of heating units are arranged in a staggered and spliced mode, and adjacent heating units are detachably connected.
Further, when the special-shaped joint welding seam is a tubular joint welding seam, the heating units are of sheet structures, and the main heating device is wrapped on the outer pipe walls at two sides of the special-shaped joint welding seam.
Further, when the special-shaped joint welding seam is a three-way pipe joint welding seam, the auxiliary heating device is arranged at the positions of the three-way branch pipe and the three-way belly.
Further, the auxiliary heating device is in a strip shape and is wound on the three-way branch pipe and the three-way belly.
Further, the temperature measuring module comprises a plurality of groups of temperature measuring units, and the plurality of groups of temperature measuring units are distributed at different distances from the special-shaped joint weld joint along the weld joint direction.
Further, each group of temperature measuring units comprises two temperature measuring units, and the two temperature measuring units are symmetrically arranged on two sides of the special-shaped joint welding seam.
The beneficial effects are that: the special-shaped joint weld joint heat treatment system can determine that the highest heat treatment temperature is positioned on a weld joint or determine the position of the highest temperature point; under the condition of structural permission, the temperature fields at two sides of the welding line are symmetrically distributed in a certain range; and the heating width is increased under the condition of structural permission; the temperature rise and fall rate is reduced; the heat preservation width and thickness are increased, and air convection heat exchange is reduced or avoided; the constant temperature time is reasonably prolonged.
Drawings
FIG. 1 is a schematic diagram of the structural distribution of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a connection relationship of a temperature control system according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a main heating apparatus according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram illustrating a temperature measurement module according to an embodiment of the present utility model.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
A heat treatment system for a special-shaped joint weld joint, as shown in fig. 1-4, comprising a main heating device 1 and an auxiliary heating device 2, wherein the main heating device 1 is arranged on two sides with the special-shaped joint weld joint 4 as a center, and the auxiliary heating device 2 is arranged on the special-shaped side of the special-shaped joint weld joint 4; the temperature control system comprises a temperature measuring module 5, the temperature measuring module 5 is arranged in a temperature measuring area 6, the temperature measuring area 6 is positioned in the equidistant range of two sides of the special-shaped joint welding seam 4, the temperature measuring module 5 is electrically connected with a temperature control module 7, a control signal of the temperature control module 7 is connected with the main heating device 1 and the auxiliary heating device 2, and a first temperature control unit 8 of the main heating device 1 and a second temperature control unit 9 of the auxiliary heating device 2 are both in feedback signal connection with the temperature control module 7.
In the process of carrying out the special-shaped joint local postweld heat treatment, main heating devices are arranged on two sides of a welding line, meanwhile, auxiliary heating devices are additionally arranged on one side of the special-shaped joint, the temperature of a preset temperature measurement area is monitored in real time through a temperature measuring module, the temperatures of the main heating device and the auxiliary heating devices are monitored and fed back through a first temperature control unit and a second temperature control unit, the temperatures of the main heating device and the auxiliary heating devices are fed back to a temperature control module, the temperature of the auxiliary heating devices is controlled and regulated according to the preset temperature range of the temperature measurement area, the temperature compensation effect is achieved, and under the condition of structural permission, the temperature fields on two sides of the welding line are symmetrically distributed in a certain range.
The main heating device 1 comprises a plurality of heating units 1-1, wherein the heating units 1-1 are arranged in a staggered and spliced mode, and adjacent heating units 1-1 are detachably connected;
in the actual layout and installation, the shape outline of the main heating device can be assembled or cut according to the specific structures at the two sides of the joint weld so as to be more fit, and the heating width is increased under the condition of structural permission; the temperature rise and fall rate is reduced; the heat preservation width and thickness are increased;
as shown in figure 3, as a preferred embodiment, a plurality of block-shaped or sheet-shaped heat insulation materials with consistent specification can be adopted, the heat insulation materials are connected in series in a staggered way through heating wires to form a large heating plate, and the large heating plate is covered on a width range area at one point at two sides of a welding line, so that the convective heat transfer of air can be reduced or avoided; the constant temperature time is reasonably prolonged.
When the special-shaped joint welding seam 4 is a tubular joint welding seam, the heating units 1-1 are of sheet structures, and the main heating device 1 is wrapped on the outer pipe walls at two sides of the special-shaped joint welding seam 4.
When the special-shaped joint welding seam 4 is a three-way pipe joint welding seam, the auxiliary heating device 2 is in a strip shape, and the auxiliary heating device 2 is wound at the positions of the three-way branch pipe and the three-way belly.
The temperature measuring module 5 comprises a plurality of groups of temperature measuring units 5-1, and the plurality of groups of temperature measuring units 5-1 are distributed at different distances from the special-shaped joint weld joint 4 along the weld joint direction; and each group of temperature measuring units 5-1 comprises two temperature measuring units 5-1, and the two temperature measuring units 5-1 are symmetrically arranged on two sides of the special-shaped joint welding seam 4.
Examples
In T-shaped three-way welding, the material of a three-way welding joint is P92, the specification OD of a main pipe and a branch pipe is 450-600mm, the thickness is 100-125mm, and the butt joint of the main pipe is 500-730mm from the center of the branch pipe;
firstly, taking a welding seam as a center, arranging 25-30kW heating plates on each side, and winding 15-20kW heating ropes on a three-way branch pipe and a three-way belly; then the constant temperature 760 ℃ of the main heating device and the constant temperature 625 ℃ of the auxiliary heating device need to be determined; setting a thermal process control curve of the main heating device and the auxiliary heating device; and (3) heating the main and auxiliary heating devices simultaneously at the same time, wherein the temperature rise and the temperature reduction are not more than 50 ℃/h, and the temperature is kept constant for 6 hours.
The temperature measuring module, the first temperature control unit and the second temperature control unit all adopt thermocouples, wherein 3 groups of 6 temperature measuring thermocouples are symmetrically arranged along two sides of the welding seam at different distances from the welding seam, and the temperature distribution is monitored;
the temperature detection results are as follows:
at the same time, the temperature difference of each thermocouple of 3 groups transversely is within 30 ℃, and the temperature difference of each thermocouple of 2 groups longitudinally is within 10 ℃.
The temperature on the welding line in the heating area is the highest temperature of the heating area; in the main heating area, the temperature fields are basically and symmetrically distributed along the welding seam; the temperature measurement areas are all located in the uniform temperature range.
The hardness measurements were as follows:
after heat treatment, the hardness of the welding seam and the base metal accords with the metal technical supervision regulations of the DL/T438 thermal power plant, and the heat treatment quality accords with the welding heat treatment regulations of the DL/T thermal power plant.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.
Claims (7)
1. A special-shaped joint welding seam heat treatment system is characterized in that: the special-shaped joint welding seam comprises a main heating device (1) and auxiliary heating devices (2), wherein the main heating device (1) is arranged on two sides with the special-shaped joint welding seam (4) as the center, and the auxiliary heating devices (2) are arranged on the special-shaped sides of the special-shaped joint welding seam (4); the temperature control system comprises a temperature measurement module (5), the temperature measurement module (5) is arranged in a temperature measurement area (6), the temperature measurement area (6) is positioned in equidistant ranges on two sides of the special-shaped joint welding seam (4), the temperature measurement module (5) is electrically connected with a temperature control module (7), a control signal of the temperature control module (7) is connected with the main heating device (1) and the auxiliary heating device (2), and a feedback signal of a first temperature control unit (8) of the main heating device (1) and a second temperature control unit (9) of the auxiliary heating device (2) are connected with the temperature control module (7).
2. A heat treatment system for a profiled joint weld according to claim 1, characterized in that: the main heating device (1) comprises a plurality of heating units (1-1), a plurality of heating units (1-1) are arranged in a staggered and spliced mode, and adjacent heating units (1-1) are detachably connected.
3. A heat treatment system for a profiled joint weld according to claim 2, characterized in that: when the special-shaped joint welding seam (4) is a tubular joint welding seam, the heating units (1-1) are of sheet structures, and the main heating device (1) is wrapped on the outer pipe walls at two sides of the special-shaped joint welding seam (4).
4. A profiled joint weld heat treatment system as defined in claim 3, wherein: when the special-shaped joint welding seam (4) is a three-way pipe joint welding seam, the auxiliary heating device (2) is arranged at the positions of the three-way branch pipe and the three-way belly.
5. The heat treatment system for a profiled joint weld according to claim 4, wherein: the auxiliary heating device (2) is in a strip shape, and the auxiliary heating device (2) is wound at the positions of the three-way branch pipe and the three-way belly.
6. A heat treatment system for a profiled joint weld according to claim 1, characterized in that: the temperature measuring module (5) comprises a plurality of groups of temperature measuring units (5-1), and the plurality of groups of temperature measuring units (5-1) are distributed at different distances from the special-shaped joint weld joint (4) along the weld joint direction.
7. The heat treatment system for a profiled joint weld according to claim 6, wherein: each group of temperature measuring units (5-1) comprises two temperature measuring units (5-1), and the two temperature measuring units (5-1) are symmetrically arranged on two sides of the special-shaped joint welding seam (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320959656.0U CN220132301U (en) | 2023-04-25 | 2023-04-25 | Special-shaped joint welding seam heat treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320959656.0U CN220132301U (en) | 2023-04-25 | 2023-04-25 | Special-shaped joint welding seam heat treatment system |
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| Publication Number | Publication Date |
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| CN220132301U true CN220132301U (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320959656.0U Active CN220132301U (en) | 2023-04-25 | 2023-04-25 | Special-shaped joint welding seam heat treatment system |
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| CN (1) | CN220132301U (en) |
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2023
- 2023-04-25 CN CN202320959656.0U patent/CN220132301U/en active Active
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