CN213073153U - Electromagnetic induction heating device for build-up welding of inner wall of pump shell of coolant of nuclear power reactor - Google Patents
Electromagnetic induction heating device for build-up welding of inner wall of pump shell of coolant of nuclear power reactor Download PDFInfo
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- CN213073153U CN213073153U CN202022118554.5U CN202022118554U CN213073153U CN 213073153 U CN213073153 U CN 213073153U CN 202022118554 U CN202022118554 U CN 202022118554U CN 213073153 U CN213073153 U CN 213073153U
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Abstract
The utility model relates to a be used for build-up welding electromagnetic induction heating device of nuclear power reactor coolant pump case inner wall, including top heating frock, bottom heating frock and lateral part heating frock, this lateral part heating frock is installed between top heating frock and bottom heating frock, the inside heating space that forms the pump case of lateral part heating frock, lateral part heating frock include the heating unit that the several set up along pump case circumferencial direction. The utility model has the advantages that: the pump shell heating device is flexible to install and convenient to operate, and can be used for integrally wrapping and heating the pump shell (workpiece) by arranging the top heating tool, the bottom heating tool and the side heating tool for assembly. The sensor tool can be flexibly disassembled and assembled to be suitable for different welding postures of workpieces. Induction heating is for flame heating and resistance-type heating, and heating efficiency is high, the temperature control precision is high and the heating homogeneity is better.
Description
Technical Field
The utility model relates to a be used for nuclear power reactor coolant pump case inner wall build-up welding electromagnetic induction heating device for to the whole pump case weld the foreweld preheat after-welding dehydrogenation and heat treatment.
Background
The function of a reactor coolant pump (called a main pump for short) is to make the coolant form a forced circulation, so that the heat energy generated in the reactor is transferred to a steam generator to generate steam to drive a steam turbine to do work.
The pump shell is a part of the pressure-bearing boundary of the main system, and the wall thickness of the pump shell can bear various loads transmitted by the connecting pipe under the accident condition, namely, the pump shell also needs to consider various loads such as the highest working pressure, the temperature transient state, the earthquake load, the pipeline fracture and the like under the accident condition besides the design state. The pump shell is integrally forged by low alloy steel, the inner surface of the pump shell is welded with materials such as ultra-low carbon stainless steel, nickel base and the like, and the welding process requires preheating before welding, hydrogen elimination after welding, heat treatment and the like on the inner wall welding part. Before surfacing of the pump shell, the temperature of the pump shell base metal is heated to meet the temperature of 150-200 ℃; the dehydrogenation temperature after overlaying needs to meet the requirement of heating the pump shell base metal at 250-400 ℃. The temperature is required to be uniform in the heating process and the heat preservation process, and the temperature difference between the outer wall and the inner wall is less than or equal to 40 ℃. The 595-620 ℃ of post-welding heat treatment requires that the temperature in the heating process is uniform, the temperature difference between the outer wall and the inner wall can be controlled to be less than or equal to 50 ℃, and the temperature of all the positions of the workpiece can meet the 595-620 ℃ during heat preservation.
At present, two process modes of outer wall flame heating and inner wall ceramic resistance card heating are commonly used in production. Flame heating uses a gas heating tool, and heats the welding part of a cylinder and a pipe joint from the outer wall of the cylinder of a header through heat generated by combustion of gas (usually natural gas). The energy utilization rate of flame heating is very low, and more than 70 percent of heat is dissipated; open fire exists in flame heating, fire hazard exists and the working environment is polluted; welding can not be carried out simultaneously when flame heating is carried out, and welding operation can be carried out only after the heating temperature is reached and the flame is turned off. The heating of the ceramic resistance chip on the inner wall is realized by making the ceramic resistance heating chip into an array and heating from the inner wall of the cylinder body of the header. In order to fix the resistance card, the heating card is generally surrounded and fixed on a long iron tower, and the heating tower is pushed into an inner hole of the cylinder body of the header box when in use. The heating mode has the advantages that the heating mode is from the inner wall of the cylinder body and does not interfere with the welding operation. But the heat conversion efficiency of the resistor disc heating is only about 50%, the heating device is easy to age, and the service life is short. In addition, because the container barrels have various specifications, and each resistance card heating tower can only be suitable for one specification of barrel, the heating towers required for welding preheating also have various specifications. These heating towers are long and heavy, take up a large space when storing, need crane and fork truck cooperation when using, and the operation manufacturability is relatively poor. The two heating modes have poor energy utilization rate, low heating temperature controllability and difficult operation, and the heating working efficiency is seriously reduced. Therefore, a new efficient, environment-friendly and good-manufacturability heating mode is urgently needed in production.
Disclosure of Invention
For overcoming prior art's defect, the utility model provides a be used for nuclear power reactor coolant pump case inner wall build-up welding electromagnetic induction heating device, the technical scheme of the utility model is:
a build-up welding electromagnetic induction heating device for nuclear power reactor coolant pump case inner wall, including top heating frock (1), bottom heating frock (2) and lateral part heating frock, this lateral part heating frock is installed between top heating frock (1) and bottom heating frock (2), the inside heating space that forms the pump case of lateral part heating frock, lateral part heating frock include the heating unit that the several set up along pump case circumferencial direction, two adjacent heating units splice together in proper order, each heating unit's upper portion with top heating frock (1) link together, the lower part with bottom heating frock (2) link together.
Each heating unit comprises a lateral cable mounting plate (13), a lateral heat-insulating blanket (11), lateral induction heating cables (10), a transverse connecting frame (12) and a vertical connecting frame (9), the lateral cable mounting plates (13) are integrally arranged in a V shape, two groups of lateral induction heating cables (10) are symmetrically mounted on the lateral cable mounting plates (13), the lateral heat-insulating blanket (11) is mounted on the lateral cable mounting plate (13) on the outer side of each lateral induction heating cable (10), and the inner sides of the lateral induction heating cables (10) correspond to the heating space; the upper portion and the lower portion of the lateral cable mounting plate (13) are respectively provided with a transverse connecting frame (12), the transverse connecting frame (12) on the upper portion is detachably connected with the top heating tool (1) through a vertical connecting frame (9), and the transverse connecting frame (12) on the lower portion is detachably connected with the bottom heating tool (2) through the vertical connecting frame (9).
The top heating tool (1) comprises a top cable mounting plate (15), a top heat preservation blanket (16), a top induction heating cable (14), a top outer ring connecting frame (17) and a top inner ring connecting frame (18), wherein the top cable mounting plate (15) is arranged in an annular shape, the top induction heating cable (14) is mounted on the top cable mounting plate (15), the top heat preservation blanket (16) is mounted on the top cable mounting plate on the outer side of the top induction heating cable (14), and the inner side of the top induction heating cable (14) corresponds to the heating space; a top inner ring connecting frame (18) is detachably connected to the inner side of the top cable mounting plate (15), and a top outer ring connecting frame (17) is detachably connected to the outer side.
The bottom heating tool (2) comprises a bottom cable mounting plate (19), a bottom induction heating cable (20), a bottom inner ring connecting frame (21), a bottom outer ring connecting frame (22) and a bottom heat-insulating blanket (23), the bottom cable mounting plate (19) is integrally arranged in a circular truncated cone shape, the bottom induction heating cable (20) is mounted on the bottom cable mounting plate (19), the bottom heat-insulating blanket (23) is mounted on the bottom cable mounting plate on the outer side of the bottom induction heating cable (20), and the inner side of the bottom induction heating cable (20) corresponds to the heating space; the upper part of the bottom cable mounting plate (19) is detachably connected with a bottom inner ring connecting frame (21), and the lower part of the bottom cable mounting plate is detachably connected with a bottom outer ring connecting frame (22).
The vertical connecting frame (9), the top cable mounting plate (15), the top outer ring connecting frame (17), the top inner ring connecting frame (18), the bottom cable mounting plate (19), the bottom inner ring connecting frame (21) and the bottom outer ring connecting frame (22) are all glass fiber plate frames.
The transverse connecting frame (12) is a stainless steel connecting frame.
The utility model has the advantages that: the pump shell heating device is flexible to install and convenient to operate, and can be used for integrally wrapping and heating the pump shell (workpiece) by arranging the top heating tool, the bottom heating tool and the side heating tool for assembly. The sensor tool can be flexibly disassembled and assembled to be suitable for different welding postures of workpieces. Induction heating is for flame heating and resistance-type heating, and heating efficiency is high, the temperature control precision is high and the heating homogeneity is better.
Drawings
Fig. 1 is a schematic view of the main structure of the present invention after disassembly.
Fig. 2 is a schematic structural view of the side heating tool in fig. 1.
Fig. 3 is a schematic structural view of the top heating tool of fig. 1.
Fig. 4 is a schematic structural view of the bottom heating tool of fig. 1.
Detailed Description
The invention will be further described with reference to specific embodiments, the advantages and features of the invention will become more apparent as the description proceeds. These examples are merely illustrative and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
Referring to fig. 1 to 4, the utility model relates to a be used for surfacing welding electromagnetic induction heating device of nuclear power reactor coolant pump case inner wall, including top heating frock 1, bottom heating frock 2 and lateral part heating frock, this lateral part heating frock is installed between top heating frock 1 and bottom heating frock 2, the inside heating space that forms the pump case of lateral part heating frock, lateral part heating frock include the heating unit that the several set up along the pump case circumferencial direction, be first heating unit 3, second heating unit 4, third heating unit 5, fourth heating unit 6, fifth heating unit 7 and sixth heating unit 8 respectively, adjacent two heating units splice together in proper order, each heating unit's upper portion with top heating frock 1 link together, the lower part with bottom heating frock 2 link together.
Each heating unit comprises a lateral cable mounting plate 13, a lateral heat-insulating blanket 11, lateral induction heating cables 10, a transverse connecting frame 12 and a vertical connecting frame 9, wherein the lateral cable mounting plate 13 is integrally arranged in a V shape, two groups of lateral induction heating cables 10 are symmetrically mounted on the lateral cable mounting plate 13, the lateral heat-insulating blanket 11 is mounted on the lateral cable mounting plate 13 outside each lateral induction heating cable 10, and the inner side of each lateral induction heating cable 10 corresponds to the heating space; the upper portion and the lower portion of the lateral cable mounting plate 13 are respectively provided with a transverse connecting frame 12, the transverse connecting frame 12 on the upper portion is detachably connected (connected through bolts) with the top heating tool 1 through a vertical connecting frame 9, and the transverse connecting frame 12 on the lower portion is detachably connected (connected through bolts) with the bottom heating tool 2 through the vertical connecting frame 9.
The top heating tool 1 comprises a top cable mounting plate 15, a top heat preservation blanket 16, a top induction heating cable 14, a top outer ring connecting frame 17 and a top inner ring connecting frame 18, wherein the top cable mounting plate 15 is arranged annularly, the top induction heating cable 14 is mounted on the top cable mounting plate 15, the top heat preservation blanket 16 is mounted on the top cable mounting plate outside the top induction heating cable 14, and the inner side of the top induction heating cable 14 corresponds to the heating space; a top inner ring connection frame 18 is detachably (bolted) connected to the inside of the top cable mounting plate 15, and a top outer ring connection frame 17 is detachably (bolted) connected to the outside.
The bottom heating tool 2 comprises a bottom cable mounting plate 19, a bottom induction heating cable 20, a bottom inner ring connecting frame 21, a bottom outer ring connecting frame 22 and a bottom heat-insulating blanket 23, the bottom cable mounting plate 19 is integrally arranged in a circular truncated cone shape, the bottom induction heating cable 20 is mounted on the bottom cable mounting plate 19, the bottom heat-insulating blanket 23 is mounted on the bottom cable mounting plate outside the bottom induction heating cable 20, and the inner side of the bottom induction heating cable 20 corresponds to the heating space; a bottom inner ring connecting frame 21 is detachably connected to the upper portion of the bottom cable mounting plate 19, and a bottom outer ring connecting frame 22 is detachably connected to the lower portion thereof.
The vertical connecting frame 9, the top cable mounting plate 15, the top outer ring connecting frame 17, the top inner ring connecting frame 18, the bottom cable mounting plate 19, the bottom inner ring connecting frame 21 and the bottom outer ring connecting frame 22 are all glass fiber plate frames.
The vertical connecting frame 9 is a glass fiber plate frame.
The utility model discloses a theory of operation is:
(1) the bottom heating tool 2 is placed at a heating station, the pump shell is hoisted to the heating station, and the supporting device is adopted to enable the heating tool at the bottom of the pump shell to be tightly attached to the main body of the pump shell (because the whole structure of the main body of the pump shell is different and the wall thickness distribution of the inner wall and the outer wall is uneven, the induction cables at the positions with thicker wall thickness are wound more densely according to the wall thickness conditions at different positions of the pump shell, so that the temperature controllable precision is effectively;
(2) hoisting the top heating tool 1 to the pump shell main body;
(3) the first heating unit 3, the second heating unit 4, the third heating unit 5, the fourth heating unit 6, the fifth heating unit 7 and the sixth heating unit 8 are hoisted to the periphery of the pump shell main body one by one, a transverse connecting frame 12 on the upper portion of each heating unit is connected with the top heating tool 1 through a vertical connecting frame 9 through a bolt, a transverse connecting frame 12 on the lower portion is connected with the bottom heating tool 2 through a vertical connecting frame 9 through a bolt, and the pump shell main body is wrapped to finish heating.
Claims (6)
1. A electromagnetic induction heating device for build-up welding of nuclear power reactor coolant pump case inner wall, its characterized in that, including top heating frock (1), bottom heating frock (2) and lateral part heating frock, this lateral part heating frock is installed between top heating frock (1) and bottom heating frock (2), the inside of lateral part heating frock forms the heating space of pump case, lateral part heating frock include the heating unit that the several set up along pump case circumferencial direction, two adjacent heating units splice together in proper order, each heating unit's upper portion with top heating frock (1) link together, the lower part with bottom heating frock (2) link together.
2. The device for the pump shell inner wall overlaying electromagnetic induction heating of the nuclear power reactor coolant according to claim 1, wherein each heating unit comprises a lateral cable mounting plate (13), a lateral heat insulating blanket (11), a lateral induction heating cable (10), a transverse connecting frame (12) and a vertical connecting frame (9), the lateral cable mounting plate (13) is arranged in a V shape as a whole, two groups of the lateral induction heating cables (10) are symmetrically arranged on the lateral cable mounting plate (13), the lateral heat insulating blanket (11) is arranged on the lateral cable mounting plate (13) at the outer side of each lateral induction heating cable (10), and the inner side of each lateral induction heating cable (10) corresponds to the heating space; the upper portion and the lower portion of the lateral cable mounting plate (13) are respectively provided with a transverse connecting frame (12), the transverse connecting frame (12) on the upper portion is detachably connected with the top heating tool (1) through a vertical connecting frame (9), and the transverse connecting frame (12) on the lower portion is detachably connected with the bottom heating tool (2) through the vertical connecting frame (9).
3. The electromagnetic induction heating device for the build-up welding of the inner wall of the pump shell of the nuclear power reactor coolant pump shell according to the claim 2 is characterized in that the top heating tool (1) comprises a top cable mounting plate (15), a top heat preservation blanket (16), a top induction heating cable (14), a top outer ring connecting frame (17) and a top inner ring connecting frame (18), the top cable mounting plate (15) is arranged in a ring shape, the top induction heating cable (14) is mounted on the top cable mounting plate (15), the top heat preservation blanket (16) is mounted on the top cable mounting plate on the outer side of the top induction heating cable (14), and the inner side of the top induction heating cable (14) corresponds to the heating space; a top inner ring connecting frame (18) is detachably connected to the inner side of the top cable mounting plate (15), and a top outer ring connecting frame (17) is detachably connected to the outer side.
4. The electromagnetic induction heating device for the build-up welding of the inner wall of the pump shell of the nuclear power reactor coolant pump shell according to claim 2, wherein the bottom heating tool (2) comprises a bottom cable mounting plate (19), a bottom induction heating cable (20), a bottom inner ring connecting frame (21), a bottom outer ring connecting frame (22) and a bottom heat-insulating blanket (23), the bottom cable mounting plate (19) is integrally arranged in a circular truncated cone shape, the bottom induction heating cable (20) is mounted on the bottom cable mounting plate (19), the bottom heat-insulating blanket (23) is mounted on the bottom cable mounting plate on the outer side of the bottom induction heating cable (20), and the inner side of the bottom induction heating cable (20) corresponds to the heating space; the upper part of the bottom cable mounting plate (19) is detachably connected with a bottom inner ring connecting frame (21), and the lower part of the bottom cable mounting plate is detachably connected with a bottom outer ring connecting frame (22).
5. The device for the build-up welding electromagnetic induction heating of the inner wall of the pump shell of the nuclear power reactor coolant according to the claim 2, the claim 3 or the claim 4, characterized in that the vertical connection frame (9), the top cable installation plate (15), the top outer ring connection frame (17), the top inner ring connection frame (18), the bottom cable installation plate (19), the bottom inner ring connection frame (21) and the bottom outer ring connection frame (22) are all glass fiber plate frames.
6. The device for the build-up welding of the inner wall of the pump casing of a nuclear reactor coolant according to claim 2, 3 or 4, characterized in that the transverse connection frame (12) is a stainless steel connection frame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022118554.5U CN213073153U (en) | 2020-09-24 | 2020-09-24 | Electromagnetic induction heating device for build-up welding of inner wall of pump shell of coolant of nuclear power reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022118554.5U CN213073153U (en) | 2020-09-24 | 2020-09-24 | Electromagnetic induction heating device for build-up welding of inner wall of pump shell of coolant of nuclear power reactor |
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| CN213073153U true CN213073153U (en) | 2021-04-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113400028A (en) * | 2021-07-07 | 2021-09-17 | 江西剑安消防科技有限责任公司 | Header pipe cutting and welding integrated device |
| CN118218732A (en) * | 2024-05-23 | 2024-06-21 | 东方法马通核泵有限责任公司 | Heating device and method for cylindrical workpiece surface overlaying |
-
2020
- 2020-09-24 CN CN202022118554.5U patent/CN213073153U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113400028A (en) * | 2021-07-07 | 2021-09-17 | 江西剑安消防科技有限责任公司 | Header pipe cutting and welding integrated device |
| CN118218732A (en) * | 2024-05-23 | 2024-06-21 | 东方法马通核泵有限责任公司 | Heating device and method for cylindrical workpiece surface overlaying |
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