A kind of deflector and its cooling pipeline cutting, welding method

Abstract

The application relates to the technical field of fusion devices, and discloses a divertor and a cutting and welding method of a cooling pipeline of the divertor. The divertor comprises a box body and a plasma-facing component supported on the box body. The plasma-facing component comprises an inner target plate, an outer target plate and a dome which are connected. The inside of the box body is located below the dome and is provided with a first cooling pipeline and a second cooling pipeline which are connected in communication. The second cooling pipeline is perpendicular to the dome. The first pipeline is used for cooling the inner target plate and the outer target plate. The second cooling pipeline is used for connecting a coolant and cooling the dome. According to the application, the cooling pipelines of the inner target plate, the dome and the outer target plate are arranged in the box body which is relatively weak and is bombarded by high-energy particles at the lower part of the dome. The cooling pipelines are horizontally connected with the inner and outer target plates and are vertically connected with the dome. The pipelines are centrally arranged, so that cutting and welding are facilitated. Meanwhile, enough space is provided for maintenance tools to operate. The pipelines are rationally arranged and are convenient to operate.

Description

Technical Field

[0001] This invention relates to the field of fusion device technology, and in particular to a divertor, especially a divertor with cooling pipes that are easy to cut and weld externally, as well as a method for cutting and welding cooling pipes. Background Technology

[0002] As one of the core internal components of a magnetic confinement tokamak fusion device, the divertor can be maintained in two ways: integral and separate. As the names suggest, integral maintenance involves moving the entire divertor module into or out of the vacuum chamber for installation or repair. Separate maintenance involves moving each component of a single divertor module into or out of the vacuum chamber individually for installation or repair. Considering cost savings, simplified procedures, and reduced difficulty in operating maintenance tools, the separate maintenance approach is more commonly used, as illustrated in the published invention patent CN202011247133.0.

[0003] Regarding the basic structure of a divertor, the first issue to address in a separate maintenance solution is the cutting and welding of the pipes. Pipe cutting can be categorized as internal or external cutting, while welding can be divided into internal and external welding. Both internal cutting and welding place extremely high demands on maintenance tools and space. For example, the cutting / welding joints must be small enough to match the inner diameter of the pipe; the equipment positioning must be precise enough so that the cutting / welding joints can accurately locate the cutting / welding position on the pipe; and the maintenance space must be large enough to accommodate the needs of maintenance tools. External cutting and welding, on the other hand, relatively reduce the requirements for maintenance tools.

[0004] To prevent bombardment by high-energy particles, the basic structure of traditional divertors, such as the ITER divertor, involves uniformly arranging cooling pipes facing the plasma components behind the inner target plate, outer target plate, and dome. This dispersed and vertical arrangement leaves no space for pipe cutting and welding. Furthermore, the operating space for maintenance tools is extremely limited. Therefore, traditional divertors primarily employ an integrated maintenance approach. In reality, the housing typically does not fail, and the inner and outer target plates and dome do not necessarily fail simultaneously. Thus, integrated maintenance results in significant waste in the construction of fusion devices, greatly increasing costs. Moreover, the substantial weight of a single divertor module places extremely high demands on the load-bearing capacity of maintenance tools. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a method for cutting and welding a divertor and its cooling pipes, which facilitates the cutting and welding of cooling pipes, provides sufficient space for maintenance tools, and makes operation easier.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A divertor includes a housing and a plasma-facing component supported on the housing. The plasma-facing component includes an inner target plate, an outer target plate, and a dome connected to each other. Inside the housing, below the dome, there is a first cooling pipe and a second cooling pipe connected together. The second cooling pipe is perpendicular to the dome. The first pipe is used to cool the inner target plate and the outer target plate. The second cooling pipe is used to connect a coolant and to cool the dome.

[0008] Preferably, the first cooling pipeline includes a first main pipeline and a second main pipeline connecting the outer target plate, wherein the first main pipeline is provided with a first cooling pipe and the second main pipeline is provided with a second cooling pipe.

[0009] Preferably, the first cooling pipeline further includes a third cooling pipe connecting the outer target plate and the inner target plate, a fourth cooling pipe connecting the inner target plate and the second main pipe, and a fifth cooling pipe connecting the first main pipe and the outer target plate.

[0010] Preferably, the inner target plate includes an inner target plate transition support, an inner vertical target plate and an inner horizontal target plate supported on the inner target plate transition support, and the third cooling pipe and the fourth cooling pipe are both connected to the inner target plate transition support.

[0011] Preferably, the outer target plate includes an outer target plate transition support and an outer horizontal target plate and an outer vertical target plate supported on the outer target plate transition support, and the first main pipe, the second main pipe, the third cooling pipe and the fifth cooling pipe are all connected to the outer target plate transition support.

[0012] Preferably, the dome includes an arched transition support supported on the box body and an arched plate supported on the arched transition support. Both the first cooling pipe and the second cooling pipe pass through the arched transition support.

[0013] Preferably, the arch transition support is fixedly connected to the box body by bolts.

[0014] Preferably, the inner target plate and the outer target plate are both located below the arch plate at the ends closest to the dome.

[0015] A method for cutting a divertor cooling line includes the following steps:

[0016] The first and second cooling pipes are externally cut;

[0017] Remove the transition supports for the arch slab and lift it up;

[0018] Cut the third, fourth, and fifth cooling pipes.

[0019] A method for welding cooling pipes for a divertor includes the following steps:

[0020] Weld the third, fourth, and fifth cooling pipes;

[0021] Install the dome;

[0022] Weld the first cooling pipe and the second cooling pipe.

[0023] The divertor of this invention, compared with the prior art, has the following advantages: By arranging the cooling pipes of the inner target plate, dome, and outer target plate within a housing beneath the relatively weak dome, bombarded by high-energy particles, the cooling pipes are horizontally connected to the inner and outer target plates and vertically connected to the dome. This centralized arrangement of pipes facilitates cutting and welding. Furthermore, the cutting and welding of the cooling pipes of the inner and outer target plates can be performed without a dome, providing sufficient space for maintenance tool operation. This invention offers advantages such as reasonable pipe arrangement and ease of operation. The invention has a simple structure, good performance, and is easy to promote and use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the divertor structure of the present invention.

[0025] Figure 2 This is a diagram showing the arrangement of the cooling pipes according to the present invention.

[0026] Wherein: 1-Inner vertical target plate, 2-Inner target plate transition support, 3-Inner horizontal target plate, 4-Arch plate transition support, 5-Arch plate, 6-Outer horizontal target plate, 7-Outer target plate transition support, 8-Outer vertical target plate, 9-Box body, 10-Bolt, 11-First cooling pipe, 12-Second cooling pipe, 13-Third cooling pipe, 14-Fourth cooling pipe, 15-First main pipe, 16-Fifth cooling pipe, 17-Second main pipe. Detailed Implementation

[0027] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0028] like Figure 1-2 As shown, a preferred embodiment of the present invention provides a divertor, including a housing 9 and a plasma-facing component supported on the housing 9. The plasma-facing component includes an inner target plate, an outer target plate, and a dome connected to each other. Inside the housing 9, below the dome, there is a first cooling pipe and a second cooling pipe connected to each other, and the second cooling pipe is perpendicular to the dome. The first pipe is used to cool the inner target plate and the outer target plate, and the second cooling pipe is used to connect a coolant and cool the dome.

[0029] Based on the aforementioned technical features, the divertor arranges the cooling pipes of the inner target plate, dome, and outer target plate within a housing 9 located below the relatively weak dome, where high-energy particles bombard. The cooling pipes are horizontally connected to the inner and outer target plates and vertically connected to the dome, and this centralized arrangement facilitates cutting and welding. Furthermore, the cutting and welding of the cooling pipes for the inner and outer target plates can be performed without a dome, providing sufficient space for maintenance tools. This invention offers advantages such as rational pipe arrangement and ease of operation. The invention has a simple structure, good performance, and is easy to promote and use.

[0030] In this embodiment, the first cooling pipeline includes a first main pipe 15 and a second main pipe 17 connecting the outer target plate. The first main pipe 15 is provided with a first cooling pipe 11, and the second main pipe 17 is provided with a second cooling pipe 12. Simultaneously, the first cooling pipeline also includes a third cooling pipe 13 connecting the outer target plate and the inner target plate, a fourth cooling pipe 14 connecting the inner target plate and the second main pipe 17, and a fifth cooling pipe 16 connecting the first main pipe 15 and the outer target plate.

[0031] Specifically, the inner target plate includes an inner target plate transition support 2, and an inner vertical target plate 1 and an inner horizontal target plate 3 supported on the inner target plate transition support 2. The third cooling pipe 13 and the fourth cooling pipe 14 are both connected to the inner target plate transition support 2.

[0032] The outer target plate includes an outer target plate transition support 7 and an outer horizontal target plate 6 and an outer vertical target plate 8 supported on the outer target plate transition support 7. The first main pipe 15, the second main pipe 17, the third cooling pipe 13, and the fifth cooling pipe 16 are all connected to the outer target plate transition support 7. The third cooling pipe 13, the fourth cooling pipe 14, and the fifth cooling pipe 16 are all horizontally arranged.

[0033] In this embodiment, the dome includes an arched transition support 4 supported on the box body 9 and an arched plate 5 supported on the arched transition support 4. The first cooling pipe 11 and the second cooling pipe 12 both pass through the arched transition support 4. The arched transition support 4 is fixedly connected to the box body 9 by bolts 10. The inner target plate and the outer target plate are both located below the arched plate 5 at their ends near the dome. Specifically, the inner target plate transition support 2 and the outer target plate transition support 7 are located below the arched plate 5.

[0034] To solve the above-mentioned technical problems, the present invention also provides a method for cutting and welding a divertor cooling pipe, wherein the cutting method includes the following steps:

[0035] The first cooling pipe 11 and the second cooling pipe 12 are externally cut;

[0036] Remove the transition support 4 of the arch plate and lift it up;

[0037] Cut the third cooling pipe 13, the fourth cooling pipe 14 and the fifth cooling pipe 16.

[0038] The welding method is the reverse of the cutting method, specifically:

[0039] Weld the third cooling pipe 13, the fourth cooling pipe 14 and the fifth cooling pipe 16;

[0040] Install the dome;

[0041] Weld the first cooling pipe 11 and the second cooling pipe 12.

[0042] The present invention features horizontally arranged cooling pipes for the inner and outer target plates and vertically arranged pipes for the dome, which facilitates the external cutting and welding of pipes during the disassembly and installation of the inner and outer target plates and the dome.

[0043] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A divertor, comprising a housing and a plasma-facing component supported on the housing, characterized in that: The plasma-facing component includes an inner target plate, an outer target plate, and a dome connected to each other. The inner target plate includes an inner target plate transition support, the outer target plate includes an outer target plate transition support, and the dome includes an arch plate transition support supported on the box body and an arch plate supported on the arch plate transition support. The interior of the box body, located below the dome, is provided with a first cooling pipe and a second cooling pipe, with the second cooling pipe being perpendicular to the dome. The first cooling pipe is used to cool the inner target plate and the outer target plate, and the second cooling pipe is used to connect the coolant and cool the dome. The first cooling pipeline includes a first main pipe and a second main pipe connecting the outer target plate. The first main pipe is provided with a first cooling pipe, and the second main pipe is provided with a second cooling pipe. The first cooling pipeline also includes a third cooling pipe connecting the outer target plate and the inner target plate, a fourth cooling pipe connecting the inner target plate and the second main pipe, and a fifth cooling pipe connecting the first main pipe and the outer target plate. The inner target plate transition support is located at one end near the dome, and the outer target plate transition support is located at one end near the dome, both below the arch plate transition support; the third cooling pipe and the fourth cooling pipe are both connected to the inner target plate transition support; the first main pipe, the second main pipe, the third cooling pipe, and the fifth cooling pipe are all connected to the outer target plate transition support. The first main pipe, the second main pipe, the third cooling pipe, the fourth cooling pipe, and the fifth cooling pipe are all located below the arch transition support; the first cooling pipe and the second cooling pipe both pass through the arch transition support.

2. The divertor as described in claim 1, characterized in that: The inner target plate also includes an inner vertical target plate and an inner horizontal target plate supported on the inner target plate transition support.

3. The divertor as described in claim 2, characterized in that: The outer target plate also includes an outer horizontal target plate and an outer vertical target plate supported on the outer target plate transition support.

4. The divertor as described in claim 1, characterized in that: The arched transition support is fixedly connected to the box body by bolts.

5. The divertor as described in claim 1, characterized in that: The inner target plate and the outer target plate are both located below the arch plate at the ends closest to the dome.

6. A method for cutting cooling pipes in a divertor, used in any one of claims 1 to 5, characterized in that: Includes the following steps: The first and second cooling pipes are externally cut; Remove the transition supports for the arch slab and lift it up; Cut the third, fourth, and fifth cooling pipes.

7. A method for welding cooling pipes for a divertor, used in any one of claims 1 to 5, characterized in that: Includes the following steps: Weld the third, fourth, and fifth cooling pipes; Install the dome; Weld the first cooling pipe and the second cooling pipe.

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