CN110730521A - Nuclear power pressure vessel connecting pipe assembly welding electromagnetic induction heating device and using method thereof - Google Patents
Nuclear power pressure vessel connecting pipe assembly welding electromagnetic induction heating device and using method thereof Download PDFInfo
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- CN110730521A CN110730521A CN201911125154.2A CN201911125154A CN110730521A CN 110730521 A CN110730521 A CN 110730521A CN 201911125154 A CN201911125154 A CN 201911125154A CN 110730521 A CN110730521 A CN 110730521A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 155
- 238000003466 welding Methods 0.000 title claims abstract description 44
- 230000005674 electromagnetic induction Effects 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000006698 induction Effects 0.000 claims abstract description 90
- 239000004744 fabric Substances 0.000 claims description 21
- 238000004321 preservation Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/14—Tools, e.g. nozzles, rollers, calenders
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses a nuclear power pressure vessel connecting pipe assembly welding electromagnetic induction heating device and a using method thereof. The invention has the advantages that: the device is matched with an induction heating power supply, an extension cable and a thermocouple to realize high-efficiency heating. According to the invention, the electromagnetic induction heating is used for heating the welding seam of the butt pipe and the cylinder, so that the temperature can be controlled more accurately, the heating efficiency is improved, the production cost is reduced, and the welding quality is improved.
Description
Technical Field
The invention relates to a heating device, which is applied to the manufacturing of nuclear power pressure vessel products and is used for pre-welding preheating and post-welding heat treatment in the assembly welding manufacturing process of pressure vessel connecting pipes and shell rings and a using method thereof, in particular to an electromagnetic induction heating device for assembly welding of nuclear power pressure vessel connecting pipes and a using method thereof.
Background
The connecting pipe and the cylinder in the pressure container product are connected in a welding mode, and for a welding process, the welding position of a workpiece needs to be preheated before welding, heat is preserved in the welding process, and heat treatment is carried out after welding, so that the workpiece needs to be heated by an external heat source to meet the requirements of the welding process. At present, a workpiece is heated in a gas mode, flame of a heating pipe bank is directly sprayed to the welding position of a cylinder section and a connecting pipe, and the heating pipe bank adopts a traditional flame heating mode, so that heating cannot be accurately controlled, the problems of uneven heating, inaccurate heating temperature, low heating efficiency, large heat radiation, poor working environment and the like are easily caused, the manufacturing cost is increased, and welding defects and the welding quality are easily caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an electromagnetic induction heating type heating device for assembling and welding a connecting pipe and a shell ring, which is used for solving the technical problems that in the existing gas heating mode, heating cannot be accurately controlled due to the fact that flame is directly sprayed on a heating workpiece, heating is uneven, heating temperature is not accurate, heating efficiency is low, heat radiation is large, quality is poor and the like.
According to the electromagnetic induction heating device for assembling and welding the nuclear power pressure vessel connecting pipe, the extension cable is connected with the induction heating power supply with the controller, the induction heating power supply provides power for the induction heater, and the fixing device fixes the induction heater on the heating workpiece.
Further optimize, the heating work piece on be equipped with temperature measuring device, temperature measuring device is connected with the controller of induction heating power, realizes the accurate heating of heating work piece, temperature measuring device can feed back the temperature of the heating work piece that detects to the controller, when the temperature reaches the required preheating temperature of technology, sets up the procedure into automatic heat preservation state, begins to carry out weldment work to the heating work piece.
Further optimizing, induction heater include inside induction heater and outside induction heater, and each heater independent work, inside induction heater fixes at the heating work piece inner wall, outside induction heater fixes at the heating work piece outer wall.
Further optimizing, the use method of the nuclear power pressure vessel connecting pipe assembly welding electromagnetic induction heating device comprises the steps of A, adjusting the position of a heating workpiece to be convenient for installing an internal induction heater, and fixing the internal induction heater on the inner wall of the heating workpiece through a tensioning device;
B. adjusting the position of the workpiece to facilitate the installation of an external reaction heater, and fixing the external induction heater on the outer wall of the heating workpiece through a jacking device;
C. the internal induction heater, the external heater and the temperature measuring device are connected with a controller of an induction heating power supply through an extension cable;
D. the temperature measuring device is used for measuring the temperature of the heating workpiece and feeding a temperature signal back to the controller of the induction heating power supply, and when the temperature reaches the preheating temperature required by the process, the program is set to be in an automatic heat preservation state, and the heating workpiece is welded.
Further optimize, fixing device include straining device and top tight device, straining device is fixed in heating workpiece inner wall with inside induction heater, top tight device is fixed in heating workpiece outer wall with outer wall induction heater.
Further preferably, the tensioning device comprises a pull rod assembly and a pull rod support, the pull rod assembly comprises a plurality of pull rods, one ends of the pull rods are connected with the pull rod support, the other ends of the pull rods are connected with the internal inductor, and the internal inductor is fixed on the workpiece and is heated through adjustment of the pull rods.
Further optimize, the tight device in top include jackscrew subassembly and jackscrew support, be fixed with the jackscrew subassembly on the jackscrew support, fix outside flexible inductor outside heating workpiece through the jackscrew subassembly.
Further optimize, inside induction heater adopt rigid structure, adopt the fan-shaped integrated configuration's of cylinder mode, including the fan-shaped combination rigid frame of cylinder, electromagnetic induction heating cable, the cloth that keeps warm, the fixed connection buckle, constitute overall structure with each part through the screw, the fan-shaped combination rigid frame of cylinder is used for arranging induction heating cable above that, the main part material is high strength epoxy mica plate, connect through aluminium alloy block and constitute overall frame, the fixed connection buckle is fixed with electromagnetic induction heating cable, the cloth winding that keeps warm is outside electromagnetic induction heating cable, the cloth that keeps warm is used for thermal-insulated, and inside induction heater is equipped with quick connector.
The outer wall induction heater is further optimized, a flexible heating belt structure is adopted, and the shape of the flexible heating belt can be freely changed according to the shape of a heating workpiece; inside electromagnetic induction heating cable of arranging of flexible heating band, the fixed connection buckle is fixed with electromagnetic induction heating cable, and the cloth winding that keeps warm is outside electromagnetic induction heating cable, through the fixed overall structure that becomes of high temperature resistant line, and the cloth that keeps warm is used for thermal-insulated, and outside induction heater is equipped with quick connector.
Further optimize, the preparation of the resistant high temperature envelope of electromagnetic induction heating cable intermediate frequency low-loss litz, high temperature resistant 300 ℃, adopt air cooling litz cable, the cable core comprises 2500 high temperature resistant envelopes, the fixed connection buckle be the dicyclo structure, the epoxy material, the heat preservation cloth adopt high silica material line to weave, high temperature resistant more than 1000 ℃.
The invention has the advantages that: the device is matched with an induction heating power supply, an extension cable and a thermocouple to realize high-efficiency heating. According to the invention, the electromagnetic induction heating is used for heating the welding seam of the butt pipe and the cylinder, so that the temperature can be controlled more accurately, the heating efficiency is improved, the production cost is reduced, and the welding quality is improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the invention for heating the connection pipe assembly welding of the nuclear power pressure vessel.
FIG. 2 is a schematic view of an induction heater apparatus of the present invention.
The labels in the figure are: 1-heating the workpiece; 2-internal induction heater; 2-1, combining a cylindrical fan-shaped rigid frame; 2-2 induction heating of the cable; 2-3, fixedly connecting a buckle; 2-4 of heat-insulating cloth; 3-an external induction heater; 3-1 induction heating the cable; 3-2, fixedly connecting a buckle; 3-3 of heat-insulating cloth; 4-a tensioning device; 4-1 a tie rod assembly; 4-2, a pull rod support; 5-a jacking device; 5-1, tightly supporting the support; 5-2 jackscrew assembly.
Detailed Description
The following will further describe the nuclear power pressure vessel connecting pipe assembly welding electromagnetic induction heating device and the use method thereof with reference to the attached drawings.
The electromagnetic induction heating device for assembling and welding the nuclear power pressure vessel connecting pipe is shown in figure 1, is a schematic use diagram of the electromagnetic induction type electromagnetic induction heating device for assembling and welding the pressure vessel connecting pipe, and comprises a heating workpiece 1, an internal induction heater 2, an external induction heater 3, a tensioning device 4 and a jacking device 5.
As shown in fig. 2, the internal induction heater 2 comprises a cylindrical fan-shaped combined rigid frame 2-1, induction heating cables 2-2 and 3-1, fixed connecting buckles 2-3 and 3-2 and heat preservation cloths 2-4 and 3-3, and all the parts are combined into an integral structure through screws; the external induction heater 3 comprises induction heating cables 2-2 and 3-1, fixed connecting buckles 2-3 and 3-2 and high-temperature cloth, and is fixed into an integral structure through a high-temperature resistant wire; the tension device 4 comprises a pull rod assembly 4-1 and a pull rod support 4-2; the jacking device 5 comprises a jacking wire assembly 5-2 and a jacking wire support 5-1.
According to the electromagnetic induction heating device for assembling and welding the nuclear power pressure vessel connecting pipe, the extension cable is connected with the induction heating power supply with the controller, the induction heating power supply provides power for the induction heater, and the fixing device fixes the induction heater on the heating workpiece 1. Be equipped with temperature measuring device on the heating workpiece 1, temperature measuring device is connected with the controller of induction heating power, realizes the accurate heating of heating workpiece 1, and temperature measuring device can feed back the temperature of the heating workpiece 1 that detects to the controller, and after the temperature reached the required preheating temperature of technology, set up the procedure into automatic heat preservation state, begin to carry out weldment work to heating workpiece 1. A thermocouple is generally selected as the temperature measuring device.
In order to heat the heating workpiece 1 more uniformly, the induction heater is divided into an inner induction heater 2 and an outer induction heater 3, the heaters work independently, the inner induction heater 2 is fixed on the inner wall of the heating workpiece 1 through a pull rod of a tensioning device 4, the tensioning device 4 comprises a pull rod assembly 4-1 and a pull rod support 4-2, the pull rod assembly 4-1 comprises a plurality of pull rods, one end of each pull rod is connected with the pull rod support 4-2, the other end of each pull rod is connected with an inner inductor, and the inner inductor is fixed on the heating workpiece 1 through adjustment of the pull rods. The external induction heater 3 is fixed on the outer wall of the heating workpiece 1 through a jackscrew component 5-2 of a jacking device 5, the jacking device 5 comprises the jackscrew component 5-2 and a jackscrew support 5-1, the jackscrew component 5-2 is fixed on the jackscrew support 5-1, and the external flexible inductor is fixed outside the heating workpiece through the jackscrew component 5-2.
The internal induction heater 2 adopts a rigid structure and adopts a cylindrical fan-shaped combined structure, and comprises a cylindrical fan-shaped combined rigid frame 2-1, induction heating cables 2-2, 3-1, heat preservation cloth 2-4, 3-3 and fixed connection buckles 2-3 and 3-2, wherein the cylindrical fan-shaped combined rigid frame 2-1 is used for arranging the induction heating cables 2-2 and 3-1 thereon, the main material is a high-strength epoxy resin mica plate which is connected to form an integral frame through an aluminum alloy block, the induction heating cables 2-2 and 3-1 are fixed on the cylindrical fan-shaped combined rigid frame 2-1 through the fixed connection buckles 2-3 and 3-2, the distance between the adjacent induction heating cables 2-2 and 3-1 is ensured to be 10mm, and the heat preservation cloth 2-4, 3-3 are wound outside the induction heating cables 2-2 and 3-1, and the heat preservation cloth 2-4 and 3-3 are used for heat insulation. The induction heating cables 2-2 and 3-1 are fixed on the cylindrical fan-shaped combined frame by the heat insulation cloth 2-4 and 3-3, and all the parts form an integral structure by screws. For the convenience of plugging, the internal induction heater 2 is provided with a quick-plugging connector. The outer wall induction heater adopts a flexible heating belt structure, and the shape of the flexible heating belt can be freely changed according to the shape of the heating workpiece 1; the induction heating cables 2-2 and 3-1 are arranged inside the flexible heating belt, the induction heating cables 2-2 and 3-1 are fixed by fixedly connecting the buckles 2-3 and 3-2, the heat preservation cloth 2-4 and 3-3 is wound outside the induction heating cables 2-2 and 3-1, and the heat preservation cloth 2-4 and 3-3 is used for heat insulation. The heat preservation cloth 2-4 and 3-3 is wrapped by the induction heating cables 2-2 and 3-1 fixedly connected with the buckles 2-3 and 3-2 and then fixed into an integral structure through a high temperature resistant wire. For convenient insertion, the external induction heater 3 is provided with a quick connector.
The induction heating cables 2-2 and 3-1 are manufactured by medium-frequency low-loss litz high-temperature-resistant covered wires, the high temperature resistance is 300 ℃, an air cooling litz cable is adopted, a cable core is composed of 2500 high-temperature-resistant covered wires, the fixedly connected buckles 2-3 and 3-2 are of a double-ring structure, the epoxy resin material is adopted, the heat-insulating cloth 2-4 and 3-3 are woven by high-silica material wires, and the high temperature resistance is over 1000 ℃.
A, adjusting the position of a heating workpiece 1 to facilitate installation of an internal induction heater 2, and fixing the internal induction heater 2 on the inner wall of the heating workpiece 1 through a tensioning device 4;
B. adjusting the position of the workpiece to facilitate the installation of an external reaction heater, and fixing an external induction heater 3 on the outer wall of the heating workpiece 1 through a jacking device 5;
C. the internal induction heater 2, the external heater and the temperature measuring device are connected with a controller of an induction heating power supply through an extension cable;
D. the temperature of the heating workpiece 1 is measured by the selected thermocouple temperature measuring device, and a temperature signal is fed back to the controller of the induction heating power supply, when the temperature reaches the preheating temperature required by the process, the controller sets the program to be in an automatic heat preservation state, and the welding work is started on the heating workpiece 1.
The foregoing shows and describes the general principles, general structure, and advantages of the present invention. It will be understood by those skilled in the art that variations and modifications in size and orientation may be made without departing from the spirit and scope of the invention, which is intended to be protected by the following claims.
Claims (10)
1. Nuclear power pressure vessel takeover assembly welding electromagnetic induction heating device which characterized in that: the extension cable is connected with an induction heating power supply with a controller, the induction heating power supply provides power for the induction heater, and the fixing device fixes the induction heater on the heating workpiece.
2. The assembly welding electromagnetic induction heating device for the connecting pipe of the nuclear power pressure vessel as claimed in claim 1, wherein: the heating workpiece is provided with a temperature measuring device, and the temperature measuring device is connected with a controller of the induction heating power supply.
3. The assembly welding electromagnetic induction heating device for the nuclear power pressure vessel connecting pipe according to claim 2, characterized in that: the induction heater comprises an internal induction heater and an external induction heater, each heater works independently, the internal induction heater is fixed on the inner wall of the heating workpiece, and the external induction heater is fixed on the outer wall of the heating workpiece.
4. The use method of the electromagnetic induction heating device for assembling and welding the connecting pipe of the nuclear power pressure vessel as claimed in claim 3, is characterized in that: A. adjusting the position of the heating workpiece to facilitate installation of the internal induction heater, and fixing the internal induction heater on the inner wall of the heating workpiece through a tensioning device;
B. adjusting the position of the workpiece to facilitate the installation of an external reaction heater, and fixing the external induction heater on the outer wall of the heating workpiece through a jacking device;
C. the internal induction heater, the external heater and the temperature measuring device are connected with a controller of an induction heating power supply through an extension cable;
D. the temperature measuring device is used for measuring the temperature of the heating workpiece and feeding a temperature signal back to the controller of the induction heating power supply, and when the temperature reaches the preheating temperature required by the process, the program is set to be in an automatic heat preservation state, and the heating workpiece is welded.
5. The assembly welding electromagnetic induction heating device for the nuclear power pressure vessel connecting pipe and the use method thereof as claimed in claim 3 or 4, wherein the assembly welding electromagnetic induction heating device comprises: the fixing device comprises a tensioning device and a jacking device, the tensioning device fixes the internal induction heater on the inner wall of the heating workpiece, and the jacking device fixes the external induction heater on the outer wall of the heating workpiece.
6. The assembly welding electromagnetic induction heating device for the nuclear power pressure vessel connecting pipe and the use method thereof as claimed in claim 3 or 4, wherein the assembly welding electromagnetic induction heating device comprises: the tensioning device comprises a pull rod assembly and a pull rod support, the pull rod assembly comprises a plurality of pull rods, one ends of the pull rods are connected with the pull rod support, the other ends of the pull rods are connected with the internal inductor, and the internal inductor is fixed on a workpiece and is heated through adjustment of the pull rods.
7. The assembly welding electromagnetic induction heating device for the nuclear power pressure vessel connecting pipe and the use method thereof as claimed in claim 3 or 4, wherein the assembly welding electromagnetic induction heating device comprises: the jacking device comprises a jackscrew assembly and a jackscrew support, the jackscrew assembly is fixed on the jackscrew support, and an external flexible inductor is fixed outside the heating workpiece through the jackscrew assembly.
8. The assembly welding electromagnetic induction heating device for the connecting pipe of the nuclear power pressure vessel as claimed in claim 3 or 4, and the use method thereof are characterized in that: the internal induction heater adopts a rigid structure and comprises a cylindrical fan-shaped combined rigid frame, an electromagnetic induction heating cable, heat-insulating cloth and a fixed connecting buckle, and all the components are combined into an integral structure through screws; the cylindrical fan-shaped combined rigid frame is used for arranging the induction heating cable thereon, and the main body is made of a high-strength epoxy resin mica plate and is connected by an aluminum alloy block to form an integral frame; the electromagnetic induction heating cable is fixed by the fixed connecting buckle; the heat preservation cloth is wound outside the electromagnetic induction heating cable, and the internal induction heater is provided with a quick connector.
9. The assembly welding electromagnetic induction heating device for the nuclear power pressure vessel connecting pipe and the use method thereof as claimed in claim 8, wherein the assembly welding electromagnetic induction heating device comprises: the outer wall induction heater adopt flexible heating belt structure, the inside electromagnetic induction heating cable that arranges of flexible heating belt, fixed connection buckle is fixed with electromagnetic induction heating cable, the winding of heat preservation cloth is outside electromagnetic induction heating cable, through the fixed overall structure that becomes of high temperature resistant line, and outside induction heater is equipped with quick connector.
10. The assembly welding electromagnetic induction heating device for the nuclear power pressure vessel connecting pipe according to claim 9, characterized in that: the electromagnetic induction heating cable medium-frequency low-loss litz high-temperature-resistant covered wire is manufactured, the temperature is 300 ℃ high, an air cooling litz cable is adopted, a cable core is formed by 2500 high-temperature-resistant covered wires, the fixed connection buckle is of a double-ring structure and made of epoxy resin, and the heat-insulating cloth is woven by high-silica material wires and is resistant to the high temperature of more than 1000 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911125154.2A CN110730521B (en) | 2019-11-18 | Electromagnetic induction heating device for nuclear power pressure container joint welding and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911125154.2A CN110730521B (en) | 2019-11-18 | Electromagnetic induction heating device for nuclear power pressure container joint welding and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110730521A true CN110730521A (en) | 2020-01-24 |
| CN110730521B CN110730521B (en) | 2024-07-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114143925A (en) * | 2021-12-02 | 2022-03-04 | 渤海造船厂集团有限公司 | Multi-path intelligent control induction heating device and method |
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| CN201307947Y (en) * | 2008-04-29 | 2009-09-09 | 吕方 | Intermediate frequency induction pipeline thawer |
| CN204918669U (en) * | 2015-07-09 | 2015-12-30 | 昆山土山***件有限公司 | Outer hole induction hardening equipment in wheel body and function |
| CN107071947A (en) * | 2017-06-14 | 2017-08-18 | 青岛海越机电科技有限公司 | Large-sized end enclosure inner wall overlaying electromagnetic-induction heating method |
| CN207877780U (en) * | 2018-01-29 | 2018-09-18 | 中国核工业第五建设有限公司 | A kind of pipeline welding superaudio electromagnetic induction heater |
| CN211378300U (en) * | 2019-11-18 | 2020-08-28 | 中国第一重型机械集团大连加氢反应器制造有限公司 | Electromagnetic induction heating device for assembling and welding nuclear power pressure vessel connecting pipe |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201307947Y (en) * | 2008-04-29 | 2009-09-09 | 吕方 | Intermediate frequency induction pipeline thawer |
| CN204918669U (en) * | 2015-07-09 | 2015-12-30 | 昆山土山***件有限公司 | Outer hole induction hardening equipment in wheel body and function |
| CN107071947A (en) * | 2017-06-14 | 2017-08-18 | 青岛海越机电科技有限公司 | Large-sized end enclosure inner wall overlaying electromagnetic-induction heating method |
| CN207877780U (en) * | 2018-01-29 | 2018-09-18 | 中国核工业第五建设有限公司 | A kind of pipeline welding superaudio electromagnetic induction heater |
| CN211378300U (en) * | 2019-11-18 | 2020-08-28 | 中国第一重型机械集团大连加氢反应器制造有限公司 | Electromagnetic induction heating device for assembling and welding nuclear power pressure vessel connecting pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114143925A (en) * | 2021-12-02 | 2022-03-04 | 渤海造船厂集团有限公司 | Multi-path intelligent control induction heating device and method |
| CN114143925B (en) * | 2021-12-02 | 2023-08-11 | 渤海造船厂集团有限公司 | Multipath intelligent control induction heating device and method |
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