A kind of installation tool for large tokamak coil vacuum chamber assembly

Abstract

The present invention belongs to the technology of fusion engineering test reactor, and specifically discloses an installation tool for a large tokamak coil vacuum chamber assembly, comprising a bottom support tube of a center column tool, a center column tool, and a lifting mechanism, wherein a center column tool base plate is fixedly provided on the upper surface of the bottom support tube of the center column tool, the center column tool is arranged on the center column tool base plate, and a positioning hole is processed on the upper surface of the center column tool for fixing the lifting mechanism, and a cross arm beam is used to lift the entire vacuum chamber and TF magnet, which can well balance the center position and contribute to the stability of the lifting equipment; the vacuum chamber and the TF magnet assembly are positioned and supported in the form of a combination of the center column tool and the cross arm beam, wherein a vertical hydraulic mechanism and a magnet support structure are mainly used to jointly support the gravity of the assembly, and a circumferential hydraulic mechanism and a cross arm beam are used to adjust the position of the assembly to meet the installation requirements.

Description

Technical Field

[0001] The invention belongs to fusion engineering experimental reactor technology, and in particular relates to an installation tool for a large tokamak coil vacuum chamber assembly. Background Art

[0002] The China Fusion Engineering Test Reactor (CFETR) is designed based on the International Thermonuclear Fusion Engineering Test Reactor (ITER). The TF magnet system of CFETR is one of the key components of the project. The magnet is designed to be a whole with Nb3Sn superconducting material and austenitic stainless steel armor. The vacuum chamber of CFETR is a D-shaped double-layer structure located inside the TF coil. The vacuum chamber and TF magnet need to be assembled in the pre-assembly hall and then hoisted to the device hall for installation and welding. During the hoisting, positioning and welding process, there are characteristics such as large volume, complex structure, high assembly precision requirements and potential risks. In order to meet the assembly design requirements of simple assembly process, high assembly efficiency, high assembly quality and low assembly cost, a special installation tool for large tokamak coil vacuum chamber components is proposed. Summary of the invention

[0003] The purpose of the present invention is to provide a large-scale tokamak coil vacuum chamber assembly installation tool, the assembly process is simple, so that the assembly efficiency and quality of the coil and vacuum chamber assembly are improved.

[0004] The technical solution of the present invention is as follows:

[0005] A mounting tool for a large tokamak coil vacuum chamber assembly comprises a bottom support tube for a center column tool, a center column tool coaxially mounted above the bottom support tube for the center column tool, and a lifting mechanism disposed on the top of the center column tool, wherein a center column tool base plate is fixedly disposed on the upper surface of the bottom support tube for the center column tool, the center column tool is disposed on the center column tool base plate, and positioning holes are processed on the upper surface of the center column tool for fixing the lifting mechanism.

[0006] The hoisting mechanism comprises a crossbeam with one end fixed to the top of the center column tooling, and a hoisting crossbeam and a hoisting plate arranged on the crossbeam.

[0007] The positioning hole on the upper surface of the center column tooling is used to fix one end of the cross beam. The number of the cross beams is 3 to 8, which are radially and evenly distributed.

[0008] The other end of the cross beam is fixed on the wall through a steel structure pre-buried on the wall.

[0009] The hoisting plate on the cross arm beam is connected to the outer shell of the TF magnet through a nylon rope.

[0010] The hoisting crossbeam is fixedly connected to the lower surface of the crossbeam.

[0011] A circle of annular hydraulic mechanisms is installed on the outer side walls of the upper and lower ends of the central column tooling, and is located on the annular inner side of the TF magnet and vacuum chamber assembly.

[0012] A vertical hydraulic mechanism is installed on the center column tooling base plate, which is located below the TF magnet and vacuum chamber assembly.

[0013] The bottom support tube of the center column tooling is arranged at the center above the bottom dewar.

[0014] The remarkable effects of the present invention are as follows: using a cross arm beam to hoist the entire vacuum chamber and TF magnet can well balance the center position and help stabilize the lifting equipment; using the combination of the center column tooling and the cross arm beam to position and support the vacuum chamber and TF magnet assembly, in which the vertical hydraulic mechanism and the magnet support structure are mainly used to jointly support the gravity of the assembly, and the circumferential hydraulic mechanism and the cross arm beam are used to adjust the position of the assembly to meet the installation requirements. The tooling design has a stable structure, is economical and practical, and can achieve precise adjustment, and can meet the installation requirements of vacuum chambers and TF magnet assemblies with large volume, complex structure, and high assembly precision requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the use of the installation tooling for the large tokamak coil vacuum chamber assembly;

[0016] Figure 2 This is a schematic diagram of the installation tooling for the large tokamak coil vacuum chamber assembly;

[0017] Figure 3 It is an assembly of a center column fixture and a bottom support cylinder of the center column fixture;

[0018] Figure 4 This is a schematic diagram of the bottom support tube of the center column tooling;

[0019] In the figure: 1. Bottom support tube of center column tooling; 2. Center column tooling; 3. TF magnet; 4. Vacuum chamber; 5. Crossbeam; 6. Bottom dewar; 7. Magnet support; 8. Lifting beam; 9. Lifting plate; 10. Steel structure embedded in the wall; 11. Vertical hydraulic mechanism; 12. Center column tooling base plate; 13. Circumferential hydraulic mechanism; 14. Positioning hole. DETAILED DESCRIPTION

[0020] The present invention will be further described below through the accompanying drawings and specific implementation methods.

[0021] like Figure 1As shown, the installation tool is located at the center above the bottom Dewar 6, and a magnet support 7 is installed above the bottom Dewar 6 for supporting the TF magnet 3 and the vacuum chamber 4.

[0022] like Figure 2 As shown, the installation tool includes a bottom support tube 1 of a center column tooling, a center column tooling 2 installed coaxially with the bottom support tube 1 of the center column tooling, a crossbeam 5 installed on the top of the center column tooling 2, and a lifting beam 8 installed on the crossbeam 5, a lifting plate 9 and a steel structure 10 embedded in the wall.

[0023] like Figure 3 and Figure 4 As shown, the bottom support cylinder 1 of the center column tooling has a certain wall thickness, and a center column tooling base plate 12 is fixedly installed on the upper surface of the cylinder wall by screws. A vertical hydraulic mechanism 11 is installed on the center column tooling base plate 12 to support the combination of the TF magnet 3 and the vacuum chamber 4.

[0024] The above-mentioned center column fixture 2 is installed on the center column fixture base plate 12, and a circle of circumferential hydraulic mechanism 13 is installed on the upper and lower outer side walls of the center column fixture 2, which is used to circumferentially position the combination of the TF magnet 3 and the vacuum chamber 4.

[0025] The upper surface of the central column fixture 2 is processed with a positioning hole 14 for installing a cross beam 5. One end of the cross beam 5 is fixed to the top of the central column fixture 2. The number of cross beams 5 is 3 to 8, which are radially and evenly distributed. The other end of the cross beam 5 is fixed to the wall through a steel structure 10 pre-buried in the wall.

[0026] A hanging plate 9 is installed on the upper surface of the cross arm beam 5 for connecting a nylon rope, and the nylon rope is connected to the outer shell of the TF magnet 3 .

[0027] A hoisting crossbeam 8 is fixedly mounted on the lower surface of the crossbeam 5 , serving as an outer lifting point of the assembly of the TF magnet 3 and the vacuum chamber 4 .

[0028] During the installation process, first install the bottom support cylinder 1 of the center column fixture, install the center column fixture 2 after it is positioned and fixed, and then fix the embedded steel structure 10 on the wall. After waiting for the vacuum chamber 4 and TF magnet 3 components to be assembled in the pre-installation hall, the upper end of the crossbeam 5 is connected to the crane hook through the hole on the lifting plate 9 with a nylon rope; the lower end is connected through the hole at the lower end of the lifting crossbeam 8 and the hole on the outer shell of the TF magnet 3 with a nylon rope, and finally the integrated body of the crossbeam 5 and the TF magnet 3 is hoisted to the installation hall.

[0029] After the TF magnet 3 and vacuum chamber 4 components are hoisted to the installation hall, their gravity is mainly borne by the vertical hydraulic mechanism 11 on the center column fixture 2 and the magnet support 7. The radial position is mainly positioned by the upper and lower circumferential hydraulic mechanisms 13 of the center column fixture 2; the circumferential position is mainly positioned by the top positioning hole 14 of the center column fixture to locate the inner side of the cross beam 5, and the steel structure 10 embedded in the wall to locate the inner side of the cross beam, so as to achieve the purpose of accurate positioning of large components.

[0030] The same method can be used to hoist the second component to the installation hall. When the two adjacent vacuum chambers 4 and TF magnet 3 components are in place, the gap can be slightly adjusted according to the actual size of the vacuum chamber 4 to suit the vacuum chamber assembly welding. After waiting for the vacuum chamber assembly welding to be completed, the installation tooling can be hoisted away in steps. The specific implementation is: first hoist away the upper end of the center column tooling 2 (retain the center column tooling base plate 12), then split the center column tooling base plate 12 into several small parts, hoist out the small parts separately, and finally hoist out the bottom support tube 1 of the center column tooling as a whole.

[0031] The present invention is not limited to the above embodiments, and various changes can be made without departing from the purpose of the present invention. The contents not described in detail in the present invention can adopt the existing technology.

Claims

1. A large-scale tokamak coil vacuum chamber assembly installation tool, comprising a center column tool bottom support cylinder (1), a center column tool (2) arranged above the center column tool bottom support cylinder (1) and coaxially installed therewith, and a lifting mechanism arranged on the top of the center column tool (2), characterized in that: A central column tooling base plate (12) is fixedly provided on the upper surface of the central column tooling bottom support cylinder (1), the central column tooling (2) is arranged on the central column tooling base plate (12), and a positioning hole (14) is processed on the upper surface of the central column tooling (2) for fixing the lifting mechanism; The hoisting mechanism comprises a crossbeam (5) with one end fixed to the top of the central column tooling (2), and a hoisting crossbeam (8) and a hoisting plate (9) arranged on the crossbeam (5); A circle of annular hydraulic mechanisms (13) are installed on the outer side walls of the upper and lower ends of the central column tooling (2), and are located on the annular inner side of the TF magnet (3) and vacuum chamber (4) combination.

2. The installation tool for a large-scale Tokamak coil vacuum chamber assembly according to claim 1, characterized in that: A vertical hydraulic mechanism (11) is installed on the central column tooling base plate (12), and is located below the combination of the TF magnet (3) and the vacuum chamber (4).

3. The installation tool for a large-scale Tokamak coil vacuum chamber assembly according to claim 2, characterized in that: The positioning hole (14) on the upper surface of the central column tooling (2) is used to fix one end of the cross beam (5). The number of the cross beams (5) is 3 to 8, which are radially and evenly distributed.

4. The installation tool for a large-scale Tokamak coil vacuum chamber assembly according to claim 3, characterized in that: The other end of the crossbeam (5) is fixed to the wall through a steel structure (10) pre-buried in the wall.

5. The installation tool for a large-scale Tokamak coil vacuum chamber assembly according to claim 4, characterized in that: The hanging plate (9) on the cross beam (5) is connected to the outer shell of the TF magnet (3) through a nylon rope.

6. The installation tool for a large-scale Tokamak coil vacuum chamber assembly according to claim 1, characterized in that: The hoisting crossbeam (8) is fixedly connected to the lower surface of the crossbeam (5).

7. The installation tool for a large-scale Tokamak coil vacuum chamber assembly according to claim 1, characterized in that: The central column tooling bottom support cylinder (1) is arranged at the center above the bottom dewar (6).

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