A terminal box

Abstract

The present invention discloses a terminal box, which belongs to the technical field of fusion superconducting coils, and comprises: a first supporting mechanism; a second supporting mechanism is provided on one side of the first supporting mechanism, the first supporting mechanism is provided with a first mounting assembly for mounting a superconductor, and the second supporting mechanism is provided with a second mounting assembly for mounting a connecting terminal, and an operating space and a testing space acting on the terminal box are formed by the first mounting assembly and the second mounting assembly; the superconductor and the connecting terminal are supported and connected by the first supporting structure and the second supporting structure, so as to protect the pipelines and the connecting terminals of the superconductor and withstand the influence of gravity and electromagnetic force connected to the feeder system, and the first mounting assembly and the second mounting assembly form an operating space and a testing space, which are convenient for installing and testing the superconductor.

Description

Technical Field

[0001] The present invention relates to the technical field of fusion superconducting coils, in particular to a terminal box. Background Art

[0002] In a nuclear fusion device, the terminal box on the PF (poloidal field) magnet is a critical electrical component, primarily used to connect the power supply and control system to the PF magnet to ensure stable operation. Its primary functions are: Power transmission: carrying high currents (up to thousands of amperes) to provide the required magnetic field for the PF magnet; Signal control: transmitting sensor signals (such as temperature, current, and voltage monitoring) and control commands to ensure precise control of the plasma configuration; Cooling interfaces: Integrated cooling channels to cope with the thermal loads during normal magnet operation. These loads include heat loads caused by uneven temperature changes in the magnet system during cooling from room temperature to 4K before operation; heat loads caused by eddy currents in the coil box and its support structure during plasma buildup during system operation; heat loads generated by radiation from the 80K internal cooling shield to the coil box; heat loads caused by heat conduction from the cold mass support; and nuclear heat loads deposited on the coil box. Diagnostics and maintenance: Reserved interfaces are provided for real-time monitoring (such as voltage and temperature) and maintenance operations. Fix and protect superconducting joints and internal pipelines: The terminal box protects superconducting joints and internal pipelines from the influence of gravity and electromagnetic force of feeder components in the feeder system, and provides fixed support for internal components such as the main helium tube, superconducting joints and signal lines.

[0003] In order to meet the above functional requirements, higher requirements are placed on the structural design of the terminal box. However, the existing integrated design structure of the terminal box still has some problems in meeting the above functional requirements, such as bearing electromagnetic loads; reserving interfaces with the feeder system; and interfering with the feeder system, CC (correction field) magnets, TF (toroidal field) magnets, cold screens and other components. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a terminal box.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: a terminal box, comprising:

[0006] a first supporting mechanism;

[0007] A second supporting mechanism is provided on one side of the first supporting mechanism. The first supporting mechanism is provided with a first mounting assembly for mounting a superconductor. The second supporting mechanism is provided with a second mounting assembly for mounting a connecting terminal. The first mounting assembly and the second mounting assembly form an operating space and a test space for the terminal box.

[0008] As a further description of the above technical solution: the first supporting mechanism includes a plurality of first supporting members, and the plurality of first supporting members are arranged in parallel or inclined.

[0009] As a further description of the above technical solution: the first support members away from the second support mechanism are installed through a first connecting member, the first support members are arranged on both sides of the first connecting member, and the two first support members are arranged obliquely.

[0010] As a further description of the above technical solution: the first support member far away from the second support mechanism and the first support member close to the second support mechanism are arranged in parallel and are connected by a second connecting member.

[0011] As a further description of the above technical solution: the first mounting assembly includes a first mounting plate, one side of the first mounting plate is connected to the first support member, a plurality of first clamps are arranged on the first mounting plate, and a first pad is arranged on the inner side of the first clamp.

[0012] As a further description of the above technical solution: the second supporting mechanism includes a plurality of second supporting members, which are arranged perpendicular to the first supporting member, a first partition plate is arranged on the second supporting member, and second partition plates are arranged on both sides of the first partition plate.

[0013] As a further description of the above technical solution: a plurality of second clamps are provided on the side of the first partition plate close to the first clamp, the second partition plate is located on the inner side of the second clamp, and a second pad is also provided on the inner side of the second clamp.

[0014] As a further description of the above technical solution: a plurality of pipeline support blocks are provided on the side of the first partition plate facing away from the second clamp, and the plurality of pipeline support blocks are symmetrically arranged on both sides of the second partition plate, so that the pipelines of the connecting terminals extend to one side of the first mounting plate.

[0015] As a further description of the above technical solution: the operating space is composed of the first support member, the side of the first mounting plate provided with the first clamp, the second support member and the side of the first partition plate provided with the second clamp;

[0016] The test space is a side of the first installation plate and the first partition plate facing away from the operation space.

[0017] As a further description of the above technical solution: a feeder assembly is provided on the second supporting mechanism, the feeder assembly includes a second mounting plate, a wire harness assembly is provided on the second mounting plate, and the cable at the wire harness assembly is electrically connected to the connecting terminal.

[0018] The above technical solution has the following advantages or beneficial effects:

[0019] The superconductor and the connection terminals are supported and connected by the first support structure and the second support structure, which protects the superconductor pipelines and connection terminals and withstands the influence of gravity and electromagnetic forces connected to the feeder system. The first installation assembly and the second installation assembly form an operating space and a test space, which facilitates the installation and testing of the superconductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 Schematic diagram of the internal structure of the terminal box proposed by the present invention Figure 1 ;

[0022] Figure 2 Schematic diagram of the internal structure of the terminal box proposed by the present invention Figure 2 ;

[0023] Figure 3 A side view of the internal structure of the terminal box proposed by the present invention;

[0024] Figure 4 A top view of the internal structure of the terminal box proposed by the present invention;

[0025] Figure 5 This is a bottom view of the internal structure of the terminal box proposed by the present invention.

[0026] Legend:

[0027] 1. First support member; 2. First connecting member; 3. Second connecting member; 4. First mounting plate; 5. First clamp; 6. First spacer; 7. Second support member; 8. First partition plate; 9. Second partition plate; 10. Second clamp; 11. Second spacer; 12. Pipeline support block; 13. Second mounting plate; 14. Wiring assembly. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Reference Figure 1-Figure 5 , the present invention provides an embodiment: a terminal box, comprising: a first supporting mechanism; a second supporting mechanism is provided on one side of the first supporting mechanism, the first supporting mechanism is provided with a first mounting assembly for mounting a superconductor, the second supporting mechanism is provided with a second mounting assembly for mounting a connecting terminal, and an operating space and a test space acting on the terminal box are formed by the first mounting assembly and the second mounting assembly; the pipeline of the connecting terminal is provided on the side facing away from the second mounting assembly, extends toward the second supporting mechanism, extends from the operating space to the test space, and is fixed on the side of the first mounting assembly facing away from the superconductor.

[0030] In this embodiment, the position of the superconductor is installed by the first installation component, and the connecting terminal is installed by the second installation component. The superconductor and the connecting terminal are supported by the first supporting mechanism and the second supporting mechanism, thereby protecting the pipelines and connecting terminals of the superconductor and withstanding the influence of gravity and electromagnetic force connected to the feeder system. The first installation component and the second installation component form an operating space and a test space, which are convenient for installing and testing the superconductor.

[0031] For the pipeline on the connecting terminal, it goes around from one side of the connecting terminal to the side facing away from the second installation component, and extends to the side of the first installation component facing away from the superconductor, extending the pipeline from the operating space to the test space to facilitate subsequent pressure testing.

[0032] The first supporting mechanism includes a plurality of first supporting members 1 , and the plurality of first supporting members 1 are arranged in parallel or inclined with respect to each other.

[0033] In this embodiment, four groups of first support members 1 are provided. The first support members 1 can be parallel to each other in pairs or tilted in opposite directions to form different spaces for arranging the first installation assembly to install and support the superconductor.

[0034] The first support members 1 away from the second support mechanism are installed through the first connecting member 2. The first support members 1 are arranged on both sides of the first connecting member 2. The two first support members 1 are tilted to form an angle.

[0035] In this embodiment, the bottom surface of the first connecting member 2 is trapezoidal, and the two oblique sides extend to form a convex surface for connecting with the first supporting member 1, so that the two first supporting members 1 away from the second supporting mechanism are inclined.

[0036] The first support member 1 far away from the second support mechanism and the first support member 1 close to the second support mechanism are arranged in parallel and connected by a second connecting member 3 .

[0037] In this embodiment, the first support member 1 away from the second support mechanism is arranged in parallel with the first support member 1 close to the second support mechanism, and a trapezoidal space is formed by four groups of first support members 1. The second connecting member 3 is a screw, which is used to connect the first support members 1 arranged in parallel and is used to install the first installation component. The first installation component is arranged near the lower bottom side of the trapezoidal space, so that there is a large space on both sides of the first installation component, which is convenient for installing superconductors and pipelines with integrated connection terminals.

[0038] The first mounting assembly includes a first mounting plate 4 , one side of which is connected to the first support member 1 . A plurality of first clamps 5 are provided on the first mounting plate 4 , and a first pad 6 is provided on the inner side of the first clamp 5 .

[0039] In this embodiment, the first mounting plate 4 is used to place the superconductor, and the superconductor is clamped and limited by a number of first clamps 5. A first pad 6 is provided on the inner side of the first clamp 5. The first pad 6 is made of insulating material. Optionally, the material of the first pad 6 is G11 epoxy glass. The superconductor is clamped and fixed by the first clamp 5 and the first pad 6 to prevent the superconductor from moving during the subsequent assembly process.

[0040] The second supporting mechanism includes a plurality of second supporting members 7 , which are arranged perpendicular to the first supporting member 1 . A first partition plate 8 is arranged on the second supporting member 7 , and second partition plates 9 are arranged on both sides of the first partition plate 8 .

[0041] In this embodiment, the second support member 7 is perpendicular to the end face of the first support member 1, and the second support member 7 is an L-shaped plate. Four second support members 7 are arranged on both sides of the first partition plate 8. The second support member 7 is connected to the first partition plate 8 by bolts. Second partition plates 9 are arranged on both sides of the first partition plate 8. The two connection terminals and pipelines are separated by the second partition plates 9 to reduce the mutual influence of electromagnetic forces when the feeders are subsequently connected.

[0042] A plurality of second fixtures 10 are provided on one side of the first partition plate 8 close to the first fixture 5 . The second partition plate 9 is located inside the second fixture 10 . A second pad 11 is also provided inside the second fixture 10 .

[0043] In this embodiment, the second clamp 10 and the first clamp 5 are located on the same side to clamp and limit the connecting terminal on the superconductor. The connecting terminal is a terminal box, and the side of the connecting terminal is clamped and positioned by the second clamp 10. The second partition plate 9 is located in the middle of the second clamp 10, and the second pad 11 is located between the second clamp 10 and the connecting terminal, and between the second partition plate 9 and the connecting terminal. The material of the first partition plate 8 and the second pad 11 is insulating material. Optionally, the material of the first partition plate 8 and the second pad 11 is G11 epoxy glass, and the connecting terminal is supported by the second clamp 10 and the second pad 11.

[0044] A plurality of pipeline support blocks 12 are provided on the side of the first partition plate 8 facing away from the second fixture 10 . The pipeline support blocks 12 are symmetrically arranged on both sides of the second partition plate 9 so that the pipelines of the connection terminals extend to one side of the first mounting plate 4 .

[0045] In this embodiment, since the pipeline of the connecting terminal is a cooling pipeline with liquid helium passing through the inside, a pipeline support block 12 is provided on the other side of the first partition plate 8 to prevent the pipeline from directly contacting the first partition plate 8. Through holes of different shapes are provided on the pipeline support block 12 for supporting pipelines of different shapes. The pipeline support block 12 is formed by docking two metal blocks with slots, and the pipeline is clamped and fixed to the first partition plate 8.

[0046] The pipeline at the first partition plate 8 is extended to the side of the first mounting plate 4 facing away from the first clamp 5 by the pipeline support block 12 to fix the pipeline.

[0047] The operating space is composed of the first support member 1, the side of the first mounting plate 4 with the first clamp 5, and the side of the second support member 7 and the first partition plate 8 with the second clamp 10; the test space is the side of the first mounting plate 4 and the first partition plate 8 facing away from the operating space.

[0048] In this embodiment, the operating space is a partial space on the same side of the first supporting mechanism and the second supporting mechanism. Specifically, in the first supporting mechanism, it is composed of the first supporting member 1 and the first mounting plate 4 on a side where the first clamp 5 is provided. In the second supporting mechanism, it is composed of the second supporting member 7 and the first partition plate 8 on a side where the second clamp 10 is provided. The operating space is formed by design for installing and connecting superconductors and connection terminals.

[0049] The test space is the side of the first mounting plate 4 and the first partition plate 8 facing away from the operating space, and is used for integrating pipelines with connection terminals, performing non-destructive testing of pipelines after welding, helium tightness testing of superconductors, and flow pressure drop testing, etc.

[0050] A feeder assembly is provided on the second supporting mechanism. The feeder assembly includes a second mounting plate 13. A wire harness assembly 14 is provided on the second mounting plate 13. The cables at the wire harness assembly 14 are electrically connected to the connection terminals.

[0051] In this embodiment, the second mounting plate 13 is arranged at the second support member 7, and there is a gap between the second mounting plate 13 and the first partition plate 8. The second mounting plate 13 is parallel to the first partition plate 8. A wiring harness assembly 14 is provided on the second mounting plate 13. One side of the cable at the wiring harness assembly 14 is connected to the external electronic control device, and the other side is connected to the cable in the connecting terminal.

[0052] One side of the wiring harness assembly 14 is connected to the insulator via a low-voltage cable assembly. On the other side of the insulator are a corresponding number of high-voltage cable assemblies, which are electrically connected to the connection terminals. A feed assembly is located in the test space and is used for low-current testing and terminal resistance testing.

[0053] The box body and box cover of the terminal box are arranged on the outside of the first supporting structure and the second supporting structure to protect the first supporting structure and the second supporting structure. The distance between the box body and the box cover is less than 0.3mm, and they are welded by argon arc welding. After welding, the terminal box as a whole is pressure tested.

[0054] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A terminal box, characterized in that: include: a first supporting mechanism; A second supporting mechanism is provided on one side of the first supporting mechanism. The first supporting mechanism is provided with a first mounting assembly for mounting a superconductor, and the second supporting mechanism is provided with a second mounting assembly for mounting a connection terminal. The first mounting assembly and the second mounting assembly form an operating space and a test space for the terminal box. The first supporting mechanism includes a plurality of first supporting members, and the plurality of first supporting members are arranged in parallel or inclined with respect to each other; The second supporting mechanism includes a plurality of second supporting members, the plurality of second supporting members are arranged perpendicular to the first supporting member, a first partition plate is arranged on the second supporting member, and second partition plates are arranged on both sides of the first partition plate; The first mounting assembly includes a first mounting plate, and a plurality of first clamps are provided on the first mounting plate; A plurality of second clamps are provided on one side of the first partition plate close to the first clamp, the second partition plate is located on the inner side of the second clamp, and a second pad is further provided on the inner side of the second clamp; The operating space is formed by the first support member, the side of the first mounting plate provided with the first clamp, the second support member and the side of the first partition plate provided with the second clamp; The test space is a side of the first installation plate and the first partition plate facing away from the operation space.

2. The terminal box according to claim 1, characterized in that: The first supporting members far away from the second supporting mechanism are installed through a first connecting member. The first supporting members are arranged on both sides of the first connecting member, and the two first supporting members are arranged obliquely.

3. The terminal box according to claim 1, wherein: The first supporting member far away from the second supporting mechanism and the first supporting member close to the second supporting mechanism are arranged in parallel and connected by a second connecting member.

4. The terminal box according to claim 1, wherein: One side of the first mounting plate is connected to the first support member, and a first cushion block is provided on the inner side of the first fixture.

5. The terminal box according to claim 1, characterized in that: A plurality of pipeline support blocks are provided on the side of the first partition plate facing away from the second fixture. The plurality of pipeline support blocks are symmetrically arranged on both sides of the second partition plate so that the pipelines of the connection terminals extend to one side of the first mounting plate.

6. The terminal box according to claim 1, characterized in that: A feeder assembly is provided on the second supporting mechanism. The feeder assembly includes a second mounting plate. A wire harness assembly is provided on the second mounting plate. The cables at the wire harness assembly are electrically connected to the connecting terminals.

Images