CN213278004U

CN213278004U - High-voltage drop-out fuse

Info

Publication number: CN213278004U
Application number: CN202022114192.2U
Authority: CN
Inventors: 林芳芳
Original assignee: Xi'an Hande Electrical Appliance Manufacturing Co ltd
Current assignee: Xi'an Hande Electrical Appliance Manufacturing Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-05-25
Anticipated expiration: 2030-09-24

Abstract

The utility model discloses a high-voltage drop-out fuse, which comprises a fuse, wherein the lower end of the fuse is fixedly provided with a fixed ring, the fuse is provided with an insulator, the upper right side of the fixed ring is fixedly provided with an upper fixed contact, the upper fixed contact is provided with an upper wiring end, the fuse is additionally provided with a protection box which can protect the whole body on the original basis, a shock absorption rod which can absorb shock is arranged inside the protection box to prevent the fuse from being damaged due to long-time shock, a moisture-proof layer is also added inside the protection box, a sponge cushion is arranged in the moisture-proof layer to prevent the short circuit caused by the water inlet of the fuse in rainy weather and also insulate heat, the heat transmitted by long-term insolation is resisted, two small fans are also arranged inside the fuse, and can cool the fuse in summer to prevent aging and damage, the safety performance of the fuse is improved, and the use value of the fuse is also improved.

Description

High-voltage drop-out fuse

Technical Field

The utility model belongs to the technical field of electric power, concretely relates to high-voltage drop out fuse.

Background

The drop-out fuse is installed on the high-voltage side of the distribution transformer or on the main line of the distribution. The main function is the place with low requirement on the protection performance, and the device can be used in combination with an isolating switch to replace an automatic air switch; the circuit breaker can also be matched with a load switch for use to replace a high-price circuit breaker. And also has short-circuit protection, overload and isolation circuits.

The existing high-voltage drop-out fuse has certain defects, for example, the existing high-voltage drop-out fuse in the market has too single structure, the fuse is installed on a circuit without a protective device, if the fuse works under the condition of high temperature or vibration for a long time, the fuse can cause short circuit, the circuit can be burnt out, and if the fuse is exposed to outdoor live operation for a long time, the fuse can be broken due to serious corrosion and aging, and certain potential safety hazards are also provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-voltage drop out fuse to it is too single to put forward some high-voltage drop out fuse structures on the market now in solving above-mentioned background, and fuse self installs and does not have the device of protection on the circuit, if work under the condition of carrying out high temperature or vibrations for a long time, the fuse can cause the condition of short circuit, can burn out the circuit, and if the fuse exposes outdoor live working for a long time, can be because of corroding ageing serious fracture, still has the problem of certain potential safety hazard.

In order to achieve the above object, the utility model provides a following technical scheme: a high-voltage drop-out fuse comprises a fuse, wherein a fixed ring is fixedly mounted at the lower end of the fuse, an insulator is arranged on the fuse, an upper static contact is fixedly mounted at the upper right side of the fixed ring, an upper wiring end is arranged on the upper static contact, an upper moving contact is fixedly mounted at the right end of the upper static contact, a pull ring is fixedly mounted at the right end of the upper moving contact, a pipe cap is fixedly mounted at the top end of the upper moving contact, a fuse body is fixedly mounted at the lower end of the pipe cap, a fusion tube is arranged inside the fuse body, a lower moving contact is fixedly mounted at the bottom end of the fuse body, a lower static contact is fixedly mounted at the left end of the lower moving contact, a lower wiring end is arranged on the lower static contact, a moisture-proof layer is arranged outside the fuse, a sponge cushion, the damping device is characterized in that a damping rod is fixedly mounted on the right side of the protection box, a base is fixedly mounted at the top of the damping rod, a supporting rod is fixedly mounted at the lower end of the base, a shock absorbing pipe is fixedly mounted at the lower end of the supporting rod, a spring is arranged on the shock absorbing pipe, a fan shell is fixedly mounted at the middle position of the right side inside the dampproof layer, a fan is arranged in the fan shell, fan blades are arranged on the fan, and a bearing is movably mounted at the central position of the fan.

Preferably, through card shell sealing connection between fuse and the protection box, the fan is provided with two sets ofly altogether, the equal parallel mount of two sets of fans is on the right side of fuse, through welded fastening between fan housing and the dampproof course inner wall.

Preferably, the base is provided with two sets altogether, the bracing piece is provided with two sets altogether, the upper end correspondence of a set of bracing piece is provided with a set of base, the lower extreme correspondence of a set of bracing piece is provided with a set of base, the spring runs through in the shock tube.

Preferably, the damping rods are provided with two groups, the two groups of damping rods are respectively arranged at the left end and the right end of the protection box, and the two groups of damping rods are fixedly connected with the protection box through the base.

Preferably, the fuse is fixedly connected with the melt through an upper wiring terminal, a lower wiring terminal, an upper moving contact and a lower moving contact.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization, this fuse has increased a protection box that can protect whole body on original basis, internally mounted at the protection box can carry out absorbing shock attenuation stick, prevent that long-time vibrations from leading to the fuse to damage, a dampproof course has still been added in the inside of protection box, the foam-rubber cushion has been installed in the dampproof course, the fuse is intake and is leaded to the circuit short circuit and can also insulate against heat when preventing overcast and rainy weather down, keep out the heat of long-term insolate transmission, still two small-size fans have been installed in inside, two small-size fans can be when summer for fuse self cooling, prevent ageing and damage, the security performance that has both increased the fuse has also improved the use value of fuse.

Drawings

Fig. 1 is a schematic structural diagram of the fuse of the present invention;

fig. 2 is a schematic structural view of the protection box of the present invention;

FIG. 3 is a schematic view of the shock absorbing rod of the present invention;

FIG. 4 is a schematic structural view of the fan of the present invention;

in the figure: 1-fuse, 2-upper terminal, 3-upper fixed contact, 4-pipe cap, 5-melt, 6-upper moving contact, 7-pull ring, 8-fuse tube, 9-lower moving contact, 10-lower fixed contact, 11-lower terminal, 12-insulator, 13-fixed ring, 14-protection box, 15-shock-absorbing rod, 16-fan shell, 17-sponge mat, 18-moisture-proof layer, 19-base, 20-support rod, 21-spring, 22-shock-absorbing tube, 23-bearing, 24-fan blade and 25-fan.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a high voltage drop-out fuse, which comprises: the fuse comprises a fuse 1, a fixed ring 13 is fixedly installed at the lower end of the fuse 1, an insulator 12 is arranged on the fuse 1, an upper static contact 3 is fixedly installed at the upper right side of the fixed ring 13, an upper wiring end 2 is arranged on the upper static contact 3, an upper moving contact 6 is fixedly installed at the right end of the upper static contact 3, a pull ring 7 is fixedly installed at the right end of the upper moving contact 6, a pipe cap 4 is fixedly installed at the top end of the upper moving contact 6, a fuse body 5 is fixedly installed at the lower end of the pipe cap 4, a fusion pipe 8 is arranged inside the fuse body 5, a lower moving contact 9 is fixedly installed at the bottom end of the fuse body 5, a lower static contact 10 is fixedly installed at the left end of the lower moving contact 9, a lower wiring end 11 is arranged on the lower static contact 10, a moisture-proof layer 18 is arranged outside the fuse 1, a, the top fixed mounting of shock attenuation stick 15 has base 19, and the lower extreme fixed mounting of base 19 has bracing piece 20, and the lower extreme fixed mounting of bracing piece 20 has shock tube 22, is provided with spring 21 on the shock tube 22, and the inside right side intermediate position department fixed mounting of dampproof course 18 has fan housing 16, is provided with fan 25 in the fan housing 16, is provided with fan leaf 24 on the fan 25, and the central point department movable mounting of fan 25 has bearing 23.

In order to ensure that the protection box 14 can be protected better and the fuse 1 can be fixed in the protection box 14 more stably, in the embodiment, the preferred fuse 1 and the protection box 14 are connected in a sealing manner through a clamping shell, two sets of fans 25 are arranged, the two sets of fans 25 are both installed on the right side of the fuse 1 in parallel, and the fan shell 16 and the inner wall of the moisture-proof layer 18 are fixed through welding.

In order to make the shock absorbing rod 15 absorb shock more effectively, in this embodiment, preferably, two sets of the bases 19 are provided, two sets of the support rods 20 are provided, one set of the bases 19 is provided at the upper ends of one set of the support rods 20, one set of the bases 19 is provided at the lower ends of one set of the support rods 20, and the spring 21 penetrates through the shock absorbing tube 22.

In order to fix the shock absorbing rod 15 in the protection box 14 more firmly, in this embodiment, two sets of shock absorbing rods 15 are preferably provided, the two sets of shock absorbing rods 15 are respectively installed at the left and right ends of the protection box 14, and the two sets of shock absorbing rods 15 are fixedly connected with the protection box 14 through the base 19.

In order to make the fuse more quickly break the circuit when short circuit occurs, in the embodiment, the fuse 1 is preferably fixedly connected with the fuse body 5 through the upper terminal 2, the lower terminal 11, the upper movable contact 6 and the lower movable contact 9.

The utility model discloses a theory of operation and use flow: after the utility model is installed, firstly, the lower moving contact 9 of the fuse tube 8 is inserted into the lower wiring terminal 11 by the high-voltage insulating rod to make it contact with the lower static contact 10, then the drag hook of the high-voltage insulating rod is penetrated into the operating ring of the fuse tube 8 to drive the fuse tube 8, so that the upper moving contact 6 is pushed into the upper wiring terminal 2 to contact with the upper static contact 3, the circuit is connected, after the fuse device 1 is fused, the upper moving contact 6 and the lower moving contact 9 of the fuse tube lose tension and become loose, the upper moving contact 6 slips downwards under the action of the spring, the fuse tube 8 falls by dead weight, the fuse 1 is in a disconnected state, an obvious fracture appears, when a circuit or equipment breaks down, the insulator 12 can be insulated, the fault current makes the melt 5 fuse rapidly to generate electric arc, the arc extinguishing tube generates a large amount of gas under the action of the electric arc, so that a large pressure is formed in the tube, and, this powerful air current, stretch the electric arc rapidly and extinguish, when fuse 1 exposes outside for a long time in summer, protect by protection box 14, fan 25 in protection box 14 can rotate through fan blade 24 on bearing 23 and cool down, dampproof course 18 can block rainwater and sunshine, under the condition that fuse 1 carries out long-term vibrations, the shock attenuation stick 15 in protection box 14 can be fixed in 14 boxes through base 19, then support by bracing piece 20, then carry out the shock attenuation through shock attenuation pipe 22, the spring 21 on the shock attenuation pipe 22 can bear pressure and contract, use the back recovery after accomplishing can, so that continue to use next time.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high-voltage drop-out fuse comprises a fuse (1) and is characterized in that: the fuse protector is characterized in that a fixed ring (13) is fixedly mounted at the lower end of the fuse protector (1), an insulator (12) is arranged on the fuse protector (1), an upper fixed contact (3) is fixedly mounted at the upper right of the fixed ring (13), an upper wiring end (2) is arranged on the upper fixed contact (3), an upper moving contact (6) is fixedly mounted at the right end of the upper fixed contact (3), a pull ring (7) is fixedly mounted at the right end of the upper moving contact (6), a pipe cap (4) is fixedly mounted at the top end of the upper moving contact (6), a melt (5) is fixedly mounted at the lower end of the pipe cap (4), a fusion tube (8) is arranged in the melt (5), a lower moving contact (9) is fixedly mounted at the bottom end of the melt (5), a lower fixed contact (10) is fixedly mounted at the left end of the lower moving contact (9), and, a moisture-proof layer (18) is arranged outside the fuse (1), a spongy cushion (17) is arranged inside the moisture-proof layer (18), a protection box (14) is arranged outside the moisture-proof layer (18), a damping rod (15) is fixedly arranged on the right side of the protection box (14), the top of the shock absorption rod (15) is fixedly provided with a base (19), the lower end of the base (19) is fixedly provided with a support rod (20), the lower end of the supporting rod (20) is fixedly provided with a shock absorbing tube (22), the shock absorbing tube (22) is provided with a spring (21), a fan shell (16) is fixedly arranged at the middle position of the right side in the moisture-proof layer (18), a fan (25) is arranged in the fan shell (16), fan blades (24) are arranged on the fan (25), and a bearing (23) is movably arranged at the central position of the fan (25).

2. A high-voltage drop-out fuse as claimed in claim 1, wherein: fuse (1) and protection box (14) between through card shell sealing connection, fan (25) are provided with two sets ofly altogether, the equal parallel mount of two sets of fans (25) is on the right side of fuse (1), pass through welded fastening between fan housing (16) and dampproof course (18) inner wall.

3. A high-voltage drop-out fuse as claimed in claim 1, wherein: the base (19) is provided with two sets altogether, bracing piece (20) are provided with two sets altogether, the upper end of a set of bracing piece (20) corresponds and is provided with a set of base (19), the lower extreme of a set of bracing piece (20) corresponds and is provided with a set of base (19), spring (21) run through in shock tube (22).

4. A high-voltage drop-out fuse as claimed in claim 1, wherein: the damping rods (15) are arranged in two groups, the two groups of damping rods (15) are respectively arranged at the left end and the right end of the protection box (14), and the two groups of damping rods (15) are fixedly connected with the protection box (14) through the base (19).

5. A high-voltage drop-out fuse as claimed in claim 1, wherein: the fuse protector (1) is fixedly connected with the melt (5) through an upper wiring terminal (2), a lower wiring terminal (11), an upper moving contact (6) and a lower moving contact (9).