Hundred kiloampere-level commutation recyclable fuse

Abstract

The utility model relates to a hundreds of kiloamperes level commutation recyclable fuse, two end portions of an insulation barrel body are both opened, the insulation barrel body is fixed on a support through a first fastener, and two barrel opening ends of the insulation barrel body are respectively fixed with an insulation barrel cover through a second fastener, and the insulation barrel cover is used for sealing and covering a barrel opening of the insulation barrel body. The two insulation barrel covers are respectively provided with an assembly opening, a contact busbar entering the insulation barrel body is inserted into the assembly opening of each insulation barrel cover, two third fasteners fixed with the two contact busbars respectively are fixed outside the insulation barrel body, and the ends, located in the insulation barrel body, of the two contact busbars are connected through a fuse. The beneficial effects are that except the fuse wire, other accessories of the hundred kiloampere-level commutation recyclable fuse can be reused, only the corresponding fuse wire needs to be replaced for experiments of different current levels, and the whole fuse has the characteristics of simple structure, easy operation, low maintenance cost, high through-current flexibility and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of hundreds of kiloampere direct current experimental testing, and particularly relates to a hundreds of kiloampere commutation recyclable fuse. Background Art

[0002] In order to meet the tests of various types of direct current switches, disconnectors, fusion device components, high-temperature superconducting current leads, etc. on the hundreds of kiloampere direct current experimental testing platform, a fuse is usually used as the primary protection device in the steady-state hundreds of kiloampere direct current experimental testing platform. Since the fuse and its components have a simple structure and reliable breaking ability, they are widely used. However, with the changes in the number of times and current levels of the equipment tested by the steady-state hundreds of kiloampere direct current experimental testing platform, a large number of fuses of different current types need to be prepared, which requires a large site area and high test cost and economic expenses. How to solve the fuse model and economy of the hundreds of kiloampere direct current experimental testing platform is the improvement direction of the fuse. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a hundreds of kiloampere commutation recyclable fuse to overcome the above deficiencies in the prior art.

[0004] The technical solution of the utility model to solve the above technical problems is as follows: A hundreds of kiloampere commutation recyclable fuse includes: an insulating barrel body with both ends open, the insulating barrel body is fixed on a bracket by a first fastener, and an insulating barrel cover for covering its barrel mouth is fixed at each of the two barrel mouth ends of the insulating barrel body by a second fastener; an assembly port is opened on each of the two insulating barrel covers, and a contact busbar entering the insulating barrel body is inserted into the assembly port of each insulating barrel cover. Two third fasteners respectively fixed to the two contact busbars are fixed outside the insulating barrel body, and the ends of the two contact busbars inside the insulating barrel body are connected by a fuse wire.

[0005] On the basis of the above technical solution, the utility model can be further improved as follows.

[0006] Further, quartz sand is filled in the insulating barrel body.

[0007] Further, an annular convex edge is provided on the insulating barrel cover, and an annular groove is provided on the end face of the insulating barrel body. When the insulating barrel cover covers the barrel mouth of the insulating barrel body, the annular convex edge enters the annular groove.

[0008] Further, the height of the annular convex edge is 1 cm and the thickness is 1 cm.

[0009] Further, the gap between the assembly port of the insulating barrel cover and the contact busbar is sealed by a rubber insulating pad.

[0010] Further, the first fastener is a U-shaped clamp.

[0011] Further, the second fastener is a first annular clamp, and a rabbet adapted to the insulating barrel cover is provided on the inner ring of the first annular clamp.

[0012] Further, the third fastener includes: a second annular clamp fixed on the insulating barrel body, and an L-shaped support member fixed to an end portion of the contact busbar outside the insulating barrel body is provided on the second annular clamp.

[0013] Further, the end portion of the contact busbar outside the insulating barrel body has multiple rows of threaded holes along its length direction, and the contact busbar is fixedly connected to the L-shaped support member by screws.

[0014] Further, the insulating barrel body is a circular tubular structure with a hollow interior and open ends at both ends. It is formed by curing epoxy resin. The wall thickness of the insulating barrel body is 5 cm, and insulating paint is sprayed on both the outer wall surface and the inner wall surface of the insulating barrel body.

[0015] The beneficial effects of the present utility model are as follows: For the mega-kilo ampere level commutation recyclable fuse designed in this solution, except for the fuse wire, other accessories can be reused. In addition, for experiments with different current levels, only the corresponding fuse wire needs to be replaced, which can well reduce the cost of experiments. As a whole, it has the characteristics of simple structure, easy operation, low maintenance cost, high current-carrying flexibility, etc. Description of the Drawings

[0016] Figure 1 is a structural diagram of the mega-kilo ampere level commutation recyclable fuse in the present utility model;

[0017] Figure 2 is a structural diagram of the insulating barrel cover in the present utility model;

[0018] Figure 3 is a half-side structural diagram of the insulating barrel body in the present utility model;

[0019] Figure 4 is a structural diagram of the first fastener in the present utility model;

[0020] Figure 5 is a structural diagram of the second fastener in the present utility model;

[0021] Figure 6 is a structural diagram of the second annular clamp in the present utility model;

[0022] Figure 7 is a structural diagram of the contact busbar in the present utility model.

[0023] In the drawings, the list of components represented by each reference numeral is as follows:

[0024] 1. Insulated barrel body, 110. Annular groove, 2. First fastener, 3. Bracket, 4. Insulated barrel cover, 410. Assembly port, 420. Annular flange, 5. Contact busbar, 510. Threaded hole, 6. Fuse, 7. Third fastener, 710. Second annular clamp, 720. L-shaped support, 8. Rubber insulation pad, 9. Second fastener, 910. Tongue-and-groove joint. Detailed implementation mode

[0025] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The examples cited are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0026] Embodiment 1

[0027] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 shown, the megakiloampere-class commutable fuse includes: an insulated barrel body 1 with both ends of the insulated barrel body 1 being open. The insulated barrel body 1 is fixed on the bracket 3 by the first fastener 2. Usually, the insulated barrel body 1 is arranged vertically. One of the two barrel ends of the insulated barrel body 1 is fixed with an insulated barrel cover 4 for covering its barrel opening by a second fastener 9, and the other barrel end is also fixed with an insulated barrel cover 4 for covering its barrel opening by a second fastener 9, that is, both barrel openings of the insulated barrel body 1 are covered;

[0028] An assembly port 410 is opened on each of the two insulated barrel covers 4, and a contact busbar 5 entering the insulated barrel body 1 is inserted into each assembly port 41 of each insulated barrel cover 4, that is, there are two contact busbars 5, and the two contact busbars 5 are symmetrically distributed. The contact busbar 5 is preferably strip-shaped, with one end inside the insulated barrel body 1 and the other end outside the insulated barrel body 1;

[0029] Two third fasteners 7 are fixed outside the insulated barrel body 1, and the end parts of the two contact busbars 5 outside the insulated barrel body 1 are respectively fixed to the two third fasteners 7, and the end parts of the two contact busbars 5 inside the insulated barrel body 1 are connected by a fuse 6.

[0030] Embodiment 2

[0031] As Figure 1 shown, this embodiment is a further improvement on Embodiment 1, specifically as follows:

[0032] Quartz sand is filled in the insulated barrel body 1, and the arc extinguishing ability can be enhanced by filling quartz sand in the insulated barrel body 1.

[0033] Embodiment 3

[0034] As Figure 2 、 Figure 3 shown, this embodiment is a further improvement based on Embodiment 1 or 2, and the specific content is as follows:

[0035] An annular flange 420 is provided on the insulating barrel cover 4, and an annular groove 110 is provided on the end face of the insulating barrel body 1. When the insulating barrel cover 4 seals the barrel opening of the insulating barrel body 1, the annular flange 420 enters the annular groove 110, which can effectively improve the sealing performance.

[0036] Furthermore: the height of the annular flange 420 is 1 cm and the thickness is 1 cm.

[0037] Embodiment 4

[0038] As Figure 2 shown, this embodiment is a further improvement based on any one of Embodiments 1 to 3, and the specific content is as follows:

[0039] The gap between the assembly port 410 of the insulating barrel cover 4 and the contact busbar 5 is sealed by a rubber insulating pad 8, which can effectively improve the sealing performance.

[0040] Embodiment 5

[0041] As Figure 4 shown, this embodiment is a further improvement based on any one of Embodiments 1 to 4, and the specific content is as follows:

[0042] The first fastener 2 is preferably a U-shaped clamp. After the U-shaped clamp is sleeved on the insulating barrel body 1, the two ends of the U-shaped end are respectively fixedly connected to the bracket 3 through bolts.

[0043] Embodiment 6

[0044] As Figure 5 shown, this embodiment is a further improvement based on any one of Embodiments 1 to 5, and the specific content is as follows:

[0045] The second fastener 9 is a first annular clamp. An adapter groove 910 adapted to the insulating barrel cover 4 is provided on the inner ring of the first annular clamp. When the insulating barrel cover 4 is fixed to the insulating barrel body 1 through the second fastener 9, the insulating barrel cover 4 can be supported by the adapter groove 910 to prevent the insulating barrel cover 4 from falling off the insulating barrel body 1.

[0046] Embodiment 7

[0047] As Figure 1 、 Figure 6 shown, this embodiment is a further improvement based on any one of Embodiments 1 to 6, and the specific content is as follows:

[0048] The third fastener 7 includes: a second annular clamp 710 which is fixed on the insulating barrel body 1, and an L-shaped support 720 which is arranged on the second annular clamp 710 and fixed to the end of the contact busbar 5 outside the insulating barrel body 1.

[0049] Furthermore: the end of the contact busbar 5 outside the insulating barrel body 1 has multiple rows of threaded holes 510 along its length direction, and the contact busbar 5 and the L-shaped support 720 are fixedly connected by screws, which is convenient for disassembly and assembly between the contact busbar 5 and the L-shaped support 720.

[0050] Embodiment 8

[0051] As Figure 1 shown, this embodiment is a further improvement based on any one of Embodiments 1 - 7, specifically as follows:

[0052] The insulating barrel body 1 is a circular tubular structure, which is cured by epoxy resin. The wall thickness of the insulating barrel body 1 is 5 cm, and the outer wall surface and the inner wall surface of the insulating barrel body 1 are both sprayed with insulating paint, having sufficient insulating ability to meet the use requirements.

[0053] The usage process is as follows:

[0054] First, fix the two contact busbars 5 on the two L-shaped supports 720 of the two third fasteners 7 respectively, then install the two second annular clamps 710 on the insulating barrel body 1, then connect the fuse 6 between the ends of the two contact busbars 5 inside the insulating barrel body 1, vertically install the insulating barrel body 1 on the bracket 3 by the first fastener 2, seal the lower end of the insulating barrel body 1 with an insulating barrel cover 4, and lock the insulating barrel cover 4 and the insulating barrel body 1 by the second fastener 9. Fill quartz sand into the insulating barrel body 1 through the upper barrel opening of the insulating barrel body 1. After the quartz sand is filled, seal the upper barrel opening of the insulating barrel body 1 with the same operation. At this time, the fuse can be integrally connected in series in the primary circuit;

[0055] When the fuse is used, loosen the second fastener 9 at the lower end of the insulating barrel body 1 to remove the insulating barrel cover 4 at the lower end of the insulating barrel body 1, then release the quartz sand in the insulating barrel body 1, and then remove the first fastener 2 to loosen the insulating barrel body 1, so that the fuse can be taken down, the two contact busbars 5 are removed, and the fuse 6 is replaced. Then fix the two contact busbars 5 and the two L-shaped supports 720, turn the end of the insulating barrel body 1 without unlocking the insulating barrel cover 4 downward, and vertically install the insulating barrel body 1 on the bracket 3 by the first fastener 2. Fill quartz sand into the insulating barrel body 1, and then seal the upper barrel opening of the insulating barrel body 1 with the same operation to perform the next round of experiment. For experiments with different current levels, just replace the fuse 6.

[0056] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. Hundred-kiloampere-class commutation cyclic fuse, characterized in that: include: An insulating barrel body (1), wherein both ends of the insulating barrel body (1) are open, the insulating barrel body (1) is fixed to a bracket (3) via a first fastener (2), the second fastener (9) is a first annular clamp, the inner ring of the first annular clamp has a tongue (910) adapted to an insulating barrel cover (4), and the two barrel ends of the insulating barrel body (1) are each fixed with an insulating barrel cover (4) for sealing the barrel mouth via a second fastener (9); each of the two insulating barrel covers (4) is provided with an assembly opening (410), and a contact busbar (5) inserted into the insulating barrel body (1) is inserted into the assembly opening (410) of each insulating barrel cover (4), and the insulating barrel body (1) is filled with quartz. Sand, two third fasteners (7) respectively fixed to the two contact busbars (5) are fixed outside the insulating barrel body (1), and the third fastener (7) comprises: a second annular clamp (710), the second annular clamp (710) is fixed to the insulating barrel body (1), an L-shaped support member (720) is provided on the second annular clamp (710), the end of the contact busbar (5) outside the insulating barrel body (1) has a plurality of rows of threaded holes (510) along its length direction, the end of the contact busbar (5) outside the insulating barrel body (1) is fixedly connected to the L-shaped support member (720) via screws, and the ends of the two contact busbars (5) inside the insulating barrel body (1) are connected via a fuse (6).

2. The 100kA commutation cycleable fuse according to claim 1, characterized in that: The insulating barrel cover (4) is provided with an annular convex edge (420), and the end surface of the insulating barrel body (1) is provided with an annular groove (110). When the insulating barrel cover (4) seals the barrel opening of the insulating barrel body (1), the annular convex edge (420) enters the annular groove (110).

3. The 100kA commutation cycleable fuse according to claim 2, characterized in that: The annular convex edge (420) has a height of 1 cm and a thickness of 1 cm.

4. The 100kA commutation cyclic fuse according to claim 1, characterized in that: The gap between the assembly opening (410) of the insulating barrel cover (4) and the contact busbar (5) is sealed by a rubber insulating gasket (8).

5. The 100kA commutation cyclic fuse according to claim 1, characterized in that: The first fastener (2) is a U-shaped clamp.

6. The 100kA commutation cycleable fuse according to claim 1, characterized in that: The insulating barrel body (1) is a circular tubular structure, which is formed by curing epoxy resin. The wall thickness of the insulating barrel body (1) is 5 cm, and the outer wall surface and the inner wall surface of the insulating barrel body (1) are sprayed with insulating paint.

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