Oil-immersed high-voltage fuse for protecting ultra-large-capacity equipment
By introducing a guide shaft, adjusting screw, and U-shaped clamp into the high-voltage fuse, the problem of the fixed structure being unable to be adjusted is solved, enabling flexible adjustment of the fuse length and improving its practicality.
Patent Information
- Application Number
- CN202423092379.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-16
AI Technical Summary
The existing high-voltage fuses have a fixed structure and cannot be length adjusted, which affects their practicality.
An oil-immersed high-voltage fuse for protecting ultra-large capacity equipment was designed. The fuse length is adjustable by a guide shaft nested in a bushing, an adjusting screw threaded into a connecting sleeve, and a U-shaped clamp fitted onto the fuse element.
It enables flexible adjustment of the fuse length, improving its practicality.
Smart Images
Figure CN223527113U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of for super large capacity equipment protection oil immersion high-voltage fuse, belong to high-voltage fuse technical field. BACKGROUND
[0002] High-voltage fuse is mainly used for overload and short-circuit protection of high-voltage transmission line, voltage transformer, voltage mutual inductor and other electrical equipment, and the high-voltage fuse currently used is fixed structure, which cannot be adjusted in length, seriously affecting the practicability of the fuse. To solve the above problems, a new technical solution is provided. UTILITY MODEL CONTENT
[0003] The utility model aims at providing a kind of for super large capacity equipment protection oil immersion high-voltage fuse to solve the problems raised in the above background.
[0004] To achieve the above object, the utility model adopts the following technical scheme: a kind of for super large capacity equipment protection oil immersion high-voltage fuse, including outer insulation pipe, the outer insulation pipe is provided with lower brass cap, pedestal and sealing groove, the lower brass cap is connected to outer insulation pipe lower end by screw thread, lower brass cap middle is fixed with lower plug by screw, the lower plug inner end is fixed with melt body by screw, the melt body is nested in the inside of outer insulation pipe, the pedestal is integrally formed and connected to the middle of outer insulation pipe bottom, pedestal is provided with shaft sleeve and connecting screw nut, the shaft sleeve is integrally formed and connected to the top left side of pedestal, the connecting screw nut is integrally formed and connected to the top right side of pedestal, the sealing groove is equidistantly opened in the inside of outer insulation pipe upper end.
[0005] Preferably, the sealing groove is nested with sealing rubber ring, the sealing rubber ring is nested with inner insulation pipe inside, the upper brass cap is connected with upper brass cap by screw thread on the upper end, the upper brass cap is provided with upper plug, adjusting screw rod and guide shaft, the upper plug is fixed by screw and installed in the middle of upper brass cap, the adjusting screw rod is rotatably connected to the right side of upper brass cap, the guide shaft is fixed by screw and installed in the left side of upper brass cap.
[0006] Preferably, the inner end of the upper plug is fixed with U-shaped clamp by screw, and the U-shaped clamp is sleeved on the melt body.
[0007] Preferably, the adjusting screw rod is screw-connected in the connecting screw nut.
[0008] Preferably, the guide shaft is nested in the shaft sleeve.
[0009] Compared with the prior art, the fusible link length adjusting device has the advantages that the guide shaft is nested in the shaft sleeve, so that the upper brass cap can be easily guided; the adjusting screw is screw-connected in the connecting screw sleeve, so that the distance between the upper brass cap and the lower brass cap can be easily adjusted; the U-shaped clamp is installed on the melt, so that the upper knife is connected with the melt; the sealing rubber ring is nested with the inner insulation tube, so that the inner insulation tube and the outer insulation tube can be easily sealed; and the fusible link length adjusting device can easily adjust the length of the fusible link, and effectively improves the practicability of the fusible link. BRIEF DESCRIPTION OF DRAWINGS
[0010] Fig. 1 is a structural schematic view of the utility model;
[0011] Fig. 2 is a structural schematic view of the outer insulation tube of the utility model;
[0012] Fig. 3 is a structural schematic view of the inner insulation tube of the utility model;
[0013] In the drawing: 1-outer insulation tube; 2-lower brass cap; 3-base; 4-sealing groove; 5-lower knife; 6-melt; 7-shaft sleeve; 8-connecting screw sleeve; 9-sealing rubber ring; 10-inner insulation tube; 11-upper brass cap; 12-upper knife; 13-adjusting screw; 14-guide shaft; 15-U-shaped clamp. DETAILED DESCRIPTION
[0014] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model.
[0015] As Figs. 1-3As shown, a kind of high-capacity device protection oil-immersed high-voltage fuse includes outer insulating tube 1, lower brass cap 2, base 3 and sealing groove 4 are provided on outer insulating tube 1, lower brass cap 2 is connected to the lower end of outer insulating tube 1 by screw thread, lower brass cap 2 is fixed with lower knife 5 in the middle by screw, lower knife 5 is fixed with fuse body 6 in the inner end by screw, fuse body 6 is nested in the inside of outer insulating tube 1, base 3 is integrally formed and connected to the middle of the bottom of outer insulating tube 1, shaft sleeve 7 and connecting nut 8 are provided on base 3, shaft sleeve 7 is integrally formed and connected to the top left side of base 3, connecting nut 8 is integrally formed and connected to the top right side of base 3, sealing groove 4 is equidistantly provided in the inside of upper end of outer insulating tube 1, sealing rubber ring 9 is nested in sealing groove 4, inner insulating tube 10 is nested in the inside of sealing rubber ring 9, upper brass cap 11 is connected to the upper end of inner insulating tube 10 by screw thread, upper brass cap 11 is provided with upper knife 12, adjusting screw 13 and guide shaft 14, upper knife 12 is fixed in the middle of upper brass cap 11 by screw, adjusting screw 13 is rotationally connected to the right side of upper brass cap 11, guide shaft 14 is fixed to the left side of upper brass cap 11 by screw, U-shaped clamp 15 is fixed in the inner end of upper knife 12 by screw, U-shaped clamp 15 is sleeved on fuse body 6, adjusting screw 13 is connected in connecting nut 8 by screw thread, guide shaft 14 is nested in shaft sleeve 7.
[0016] Specific use: according to the distance between fixed knife seat, screw adjusting screw 13 drives inner insulating tube 10 on upper brass cap 11 to move linearly outward or inward along shaft sleeve 7, inner insulating tube 10 moves outward or inward drives upper knife 12 to move outward or inward, upper knife 12 moves outward or inward adjusts the distance between lower knife 5; while inner insulating tube 10 moves outward or inward drives U-shaped clamp 15 to move outward or inward along fuse body 6, U-shaped clamp 15 moves outward or inward makes upper knife 12 and fuse body 6 keep connection at all times.
[0017] The above is the preferred embodiment of the present application, for ordinary skilled in the art, according to the teaching of the present application, without departing from the principles and spirit of the present application, the change, modification, replacement and variation of the embodiment still fall within the protection scope of the present application.
Claims
1. A high capacity oil immersed high voltage fuse for protection of electrical equipment comprising an outer insulating tube (1) characterised in that: The outer insulation pipe (1) is provided with a lower brass cap (2), a base (3) and a sealing groove (4), the lower brass cap (2) is connected to the lower end of the outer insulation pipe (1) through threads, the lower brass cap (2) is provided with a lower plug (5) fixed by screws in the middle, the lower plug (5) is provided with a melt (6) fixed by screws at the inner end, the melt (6) is nested in the inner part of the outer insulation pipe (1), the base (3) is integrally connected to the middle of the bottom of the outer insulation pipe (1), the base (3) is provided with a shaft sleeve (7) and a connecting screw sleeve (8), the shaft sleeve (7) is integrally connected to the top left side of the base (3), the connecting screw sleeve (8) is integrally connected to the top right side of the base (3), and the sealing groove (4) is equidistantly arranged in the inner part of the upper end of the outer insulation pipe (1).
2. A high capacity oil immersed high voltage fuse for protection of electrical equipment as claimed in claim 1 wherein: The sealing groove (4) is nested with a sealing rubber ring (9), the sealing rubber ring (9) is nested with an inner insulation pipe (10) in the inner part, the upper end of the inner insulation pipe (10) is connected with an upper brass cap (11) through threads, the upper brass cap (11) is provided with an upper plug (12), an adjusting screw rod (13) and a guide shaft (14), the upper plug (12) is fixed by screws in the middle of the upper brass cap (11), the adjusting screw rod (13) is rotatably connected to the right side of the upper brass cap (11), and the guide shaft (14) is fixed by screws to the left side of the upper brass cap (11).
3. A high voltage oil immersed fuse for protection of very large capacity equipment as claimed in claim 2 wherein: The inner end of the upper plug (12) is fixed by screws with a U-shaped clamp (15), and the U-shaped clamp (15) is sleeved on the melt (6).
4. A high capacity oil immersed high voltage fuse for protection of electrical equipment as claimed in claim 2 wherein: The adjusting screw rod (13) is threadedly connected in the connecting screw sleeve (8).
5. The oil-immersed high-voltage fuse for protecting ultra-large capacity equipment according to claim 2, characterized in that: The guide shaft (14) is nested in the shaft sleeve (7).