CN210548765U - Nuclear reactor internals reactor core bearing plate welding anti-deformation device - Google Patents
Nuclear reactor internals reactor core bearing plate welding anti-deformation device Download PDFInfo
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- CN210548765U CN210548765U CN201920453680.0U CN201920453680U CN210548765U CN 210548765 U CN210548765 U CN 210548765U CN 201920453680 U CN201920453680 U CN 201920453680U CN 210548765 U CN210548765 U CN 210548765U
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Abstract
The utility model discloses a nuclear reactor internals reactor core bearing plate welding anti-deformation device, which comprises a welding machine platform, wherein an anti-deformation supporting tire mold is arranged on the welding machine platform, and an adjustable sizing block is arranged between the anti-deformation supporting tire mold and the welding machine platform; a reactor core supporting plate is arranged on the anti-deformation supporting tire membrane, a plurality of guide rods are uniformly distributed on the circumference of the anti-deformation supporting tire membrane, and the reactor core supporting plate is arranged on the anti-deformation supporting tire membrane through the guide rods; a tension screw is further arranged between the reactor core supporting plate and the anti-deformation supporting tire membrane, and the reactor core supporting plate and the anti-deformation supporting tire membrane are fixedly connected through the tension screw; the device can realize the functions of positioning, welding deformation prevention and the like of the reactor core support plate, is quick and efficient to operate, has good control deformation effect, and well meets the deformation prevention control requirement of the flatness and the hole system position degree of the welded reactor core support plate.
Description
Technical Field
The utility model belongs to the technical field of the welding shape of preapring for an unfavorable turn of events, especially, relate to a nuclear reactor internals reactor core bearing plate welding anti-deformation device.
Background
The reactor internals are one of the most critical core devices in the nuclear reactor of the marine nuclear power platform, are the heart of the nuclear reactor, and comprise all structural components except a fuel assembly and related assemblies thereof, an in-reactor measuring instrument and an irradiation sample monitoring tube in a reactor pressure vessel. The hanging basket barrel component is one of the most core components of the reactor internals and is formed by assembling and welding a reactor core supporting plate and a hanging basket barrel. The cradle barrel assembly mainly has important functions of arranging nuclear fuel, shielding reactor core neutrons, forming a fluid channel and the like, and the reactor core support plate mainly has the function of precisely positioning the nuclear fuel, the precision of the reactor core support plate determines the installation precision of the nuclear fuel, the accuracy of the nuclear reaction control of the whole reactor is further determined, and the cradle barrel assembly plays an important role in the safety of the nuclear reactor.
As the depth of the nuclear power hanging basket barrel assembly from the upper surface of the flange to the upper surface of the reactor core supporting plate reaches 11m, and the diameter phi 1m of the small nuclear power hanging basket barrel assembly is too small, the machine tool is difficult to perform secondary processing on the upper positioning surface and the hole system of the reactor core supporting plate after welding is completed. However, because the core support plate of the basket barrel assembly is connected with the basket barrel by adopting a full penetration welding seam, the welding quantity is large, the deformation is serious, but the precision requirement of the core support plate is very high, the flatness of the upper positioning surface of the core support plate is generally required to be about 0.1mm, and the hole system position degree of the core support plate is generally required to be about phi 0.15 mm.
SUMMERY OF THE UTILITY MODEL
The utility model provides a nuclear reactor internals reactor core bearing plate welding anti-deformation device aims at solving the high technical problem of secondary operation after can't welding of reactor core bearing plate required precision.
The utility model discloses a device for preventing deformation during welding of a reactor core support plate of a nuclear reactor internals, which comprises a welding machine platform, wherein an anti-deformation supporting tire mold is arranged on the welding machine platform, and an adjustable sizing block is arranged between the anti-deformation supporting tire mold and the welding machine platform; a reactor core supporting plate is arranged on the anti-deformation supporting tire membrane, a plurality of guide rods are uniformly distributed on the circumference of the anti-deformation supporting tire membrane, and the reactor core supporting plate is arranged on the anti-deformation supporting tire membrane through the guide rods; and a tension screw is further arranged between the reactor core supporting plate and the anti-deformation supporting tire membrane, and the reactor core supporting plate and the anti-deformation supporting tire membrane are fixedly connected through the tension screw.
Furthermore, a cushion block is arranged between the reactor core supporting plate and the anti-deformation supporting tire membrane, and a gap is reserved between the reactor core supporting plate and the anti-deformation supporting tire membrane through the cushion block.
Furthermore, a plurality of through holes are respectively formed in the reactor core supporting plate and the anti-deformation supporting tire membrane, and the through holes vertically penetrate through the reactor core supporting plate and the anti-deformation supporting tire membrane.
Furthermore, a center hole is formed in the reactor core supporting plate, and a stepped groove is formed in the circumferential direction of the top end of the center hole.
Furthermore, an arc-shaped through groove with the same inner diameter as the through hole is formed in the inner wall of the central hole.
Furthermore, a hanging basket barrel is arranged on the reactor core supporting plate, and the bottom of the hanging basket barrel is connected with the reactor core supporting plate in a welding mode.
Furthermore, the adjustable sizing blocks are radially arranged on the welding machine platform, and the plurality of adjustable sizing blocks are uniformly distributed on the circumference of the welding machine platform.
Further, the welding machine platform is a vertical hot wire TIG welding machine workbench.
Compared with the prior art, the beneficial effects of the utility model are that: the device can realize the functions of positioning, welding deformation prevention and the like of the reactor core supporting plate, is fast and efficient to operate, and has a good deformation control effect. The method is applied to the welding of a certain AP1000 project basket barrel assembly which is born by the department of China, and the deformation prevention control requirements of the flatness and the hole system position degree of a core support plate after welding are well met; the device can also be used for welding other nuclear power large reactor type or small reactor core supporting plates through improvement.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a top view of the present invention;
fig. 4 is a diagram of an embodiment of the present invention;
in the figure: 1-a welding machine platform, 2-an anti-deformation supporting tire membrane, 3-a reactor core supporting plate, 4-an adjustable sizing block, 5-a guide rod, 6-a tensioning screw, 7-a cushion block, 8-a through hole, 9-a central hole, 10-a step groove, 11-an arc-shaped through groove and 12-a hanging basket barrel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1-4, the present invention provides a technical solution:
a welding anti-deformation device for a reactor core support plate of a nuclear reactor internals comprises a welding machine platform 1, wherein an anti-deformation supporting tire membrane 2 is arranged on the welding machine platform 1, and an adjustable sizing block 4 is arranged between the anti-deformation supporting tire membrane 2 and the welding machine platform 1; the reactor core supporting plate 3 is arranged on the anti-deformation supporting tire membrane 2, a plurality of guide rods 5 are uniformly distributed on the circumferential direction of the anti-deformation supporting tire membrane 2, and the reactor core supporting plate 3 is arranged on the anti-deformation supporting tire membrane 2 through the guide rods 5; a tension screw 6 is further arranged between the reactor core supporting plate 3 and the anti-deformation supporting tire membrane 2, and the reactor core supporting plate 3 and the anti-deformation supporting tire membrane 2 are fixedly connected through the tension screw 6.
Specifically, a cushion block 7 is further arranged between the reactor core supporting plate 3 and the anti-deformation supporting tire membrane 2, and a gap is reserved between the reactor core supporting plate 3 and the anti-deformation supporting tire membrane 2 through the cushion block 7; a plurality of through holes 8 are respectively formed in the reactor core supporting plate 3 and the anti-deformation supporting tire membrane 2, and the through holes 8 vertically penetrate through the reactor core supporting plate 3 and the anti-deformation supporting tire membrane 2; the reactor core supporting plate 3 is provided with a central hole 9, and the top end of the central hole 9 is circumferentially provided with a stepped groove 10; an arc through groove 11 with the same inner diameter as the through hole 8 is arranged on the inner wall of the central hole 9.
Wherein, the reactor core supporting plate 3 is provided with a hanging basket cylinder 12, and the bottom of the hanging basket cylinder 12 is welded with the reactor core supporting plate 3; the adjustable sizing blocks 4 are radially arranged on the welding machine platform 1, and the adjustable sizing blocks 4 are uniformly distributed on the circumferential direction of the welding machine platform 1.
The welding machine platform 1 is a vertical hot wire TIG welding machine workbench.
In this embodiment, the welding deformation preventing device for the reactor core support plate 3 of the reactor internals of a nuclear reactor mainly includes: the anti-deformation support tire mold comprises an anti-deformation support tire mold 2, an adjustable sizing block 4, a guide rod 5, a tensioning screw 6, a matching part and the like. The reactor core supporting plate 3 is arranged on the anti-deformation supporting tire membrane 2, the reactor core supporting plate 3 is installed on the anti-deformation supporting tire membrane 2 in a guiding mode through the guide rods 5, and the reactor core supporting plate 3 is compacted on the anti-deformation supporting tire membrane 2 through the tensioning screw 6 and the matching parts.
In the process of welding the reactor core supporting plate 3 and the hanging basket barrel 12, the looseness of the tension screw 6 at each position is checked at any time, the loosened position is loaded and screwed, and after the welding is finished, the welding deformation prevention device and the hanging basket barrel 12 assembly are subjected to stress relief heat treatment together.
The specific using process is as follows: firstly, the anti-deformation supporting tire membrane 2 is located on a welding machine working platform, the anti-deformation supporting tire membrane 2 is leveled by using the adjustable sizing block 4, then the reactor core supporting plate 3 is located on the anti-deformation supporting tire membrane 2, at the moment, the reactor core supporting plate 3 needs to be installed and guided by using the guide rod 5, and dislocation is prevented, so that the hole series of the reactor core supporting plate 3 and the hole series of the anti-deformation supporting tire membrane 2 are in one-to-one correspondence. And finally, a tensioning screw 6 is used for penetrating through a hole system and fixing the tensioning screw on the anti-deformation supporting tire membrane 2, and a matching part is used for locking the screw to compact the reactor core supporting plate 3 on the anti-deformation supporting tire membrane 2.
After the anti-deformation device is installed, the workpieces such as the basket barrel body 12 and the like can be in place, and the circumferential weld joint is welded. In the welding process, the tightness of each tensioning screw 6 is monitored at any time, and the screws loosened in the process are reloaded and pre-tensioned.
After the whole assembly and welding are finished, the hanging basket barrel 12 assembly and the welding anti-deformation device are integrally hoisted to a heat treatment furnace, and stress relief heat treatment is carried out together. The anti-deformation device can be disassembled after the heat treatment is finished.
The device can realize the functions of positioning, welding deformation prevention and the like of the reactor core supporting plate 3, is fast and efficient to operate, and has a good deformation control effect. The method is applied to the welding of a certain AP1000 project basket barrel 12 assembly which is born by the department of I, and the anti-deformation control requirements of the flatness and the hole system position degree of the core support plate 3 after welding are well met.
The device can also be used for welding other nuclear power large reactor type or small reactor core supporting plates through improvement.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a nuclear reactor internals reactor core bearing plate welding anti-deformation device which characterized in that: the anti-deformation support tire mold comprises a welding machine platform, wherein an anti-deformation support tire mold is arranged on the welding machine platform, and an adjustable sizing block is arranged between the anti-deformation support tire mold and the welding machine platform; a reactor core supporting plate is arranged on the anti-deformation supporting tire membrane, a plurality of guide rods are uniformly distributed on the circumference of the anti-deformation supporting tire membrane, and the reactor core supporting plate is arranged on the anti-deformation supporting tire membrane through the guide rods; and a tension screw is further arranged between the reactor core supporting plate and the anti-deformation supporting tire membrane, and the reactor core supporting plate and the anti-deformation supporting tire membrane are fixedly connected through the tension screw.
2. The welding deformation preventing device for the core support plate of the reactor internals of a nuclear reactor according to claim 1, wherein: and a cushion block is also arranged between the reactor core supporting plate and the anti-deformation supporting tire membrane, and a gap is reserved between the reactor core supporting plate and the anti-deformation supporting tire membrane through the cushion block.
3. The welding deformation preventing device for the core support plate of the reactor internals of a nuclear reactor according to claim 1, wherein: the reactor core supporting plate and the anti-deformation supporting tire membrane are respectively provided with a plurality of through holes, and the through holes vertically penetrate through the reactor core supporting plate and the anti-deformation supporting tire membrane.
4. The welding deformation preventing device for the core support plate of the reactor internals of a nuclear reactor according to claim 3, wherein: the reactor core support plate is provided with a center hole, and a stepped groove is formed in the circumferential direction of the top end of the center hole.
5. The welding deformation preventing device for the core support plate of the reactor internals of a nuclear reactor according to claim 4, wherein: and an arc-shaped through groove with the same inner diameter as the through hole is formed in the inner wall of the central hole.
6. The welding deformation preventing device for the core support plate of the reactor internals of a nuclear reactor according to claim 1, wherein: the reactor core support plate is provided with a hanging basket barrel, and the bottom of the hanging basket barrel is welded with the reactor core support plate.
7. The welding deformation preventing device for the core support plate of the reactor internals of a nuclear reactor according to claim 1, wherein: the adjustable sizing blocks are radially arranged on the welding machine platform, and the plurality of adjustable sizing blocks are uniformly distributed on the periphery of the welding machine platform.
8. The welding deformation preventing device for the core support plate of the reactor internals of a nuclear reactor according to claim 1, wherein: the welding machine platform is a vertical hot wire TIG welding machine workbench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920453680.0U CN210548765U (en) | 2019-04-04 | 2019-04-04 | Nuclear reactor internals reactor core bearing plate welding anti-deformation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920453680.0U CN210548765U (en) | 2019-04-04 | 2019-04-04 | Nuclear reactor internals reactor core bearing plate welding anti-deformation device |
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| Publication Number | Publication Date |
|---|---|
| CN210548765U true CN210548765U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920453680.0U Active CN210548765U (en) | 2019-04-04 | 2019-04-04 | Nuclear reactor internals reactor core bearing plate welding anti-deformation device |
Country Status (1)
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| CN (1) | CN210548765U (en) |
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- 2019-04-04 CN CN201920453680.0U patent/CN210548765U/en active Active
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