CN213042863U - High-voltage current-limiting fuse for electric power - Google Patents

Abstract

The utility model discloses a high-voltage current-limiting fuse for electric power, which belongs to the technical field of high-voltage protectors, and comprises a fuse tube main body, wherein nuts are sleeved on both sides of the fuse tube main body, a first protective shell is arranged above the fuse tube main body and between the two nuts, one side of the first protective shell is movably connected with a movable semi-ring, and the other side of the first protective shell is fixedly connected with a fixed semi-ring; the utility model discloses set up first protective housing and second protective housing, can form annular protective housing between first protective housing and second protective housing to the cover protects the fuse tube main part in the outside of fuse tube main part, avoids the fuse tube main part to contact with external environment, is difficult to consequently make the fuse tube main part take place corrosion, ageing scheduling problem, reduces because of corrosion, ageing scheduling problem causes the incidence of high-pressure current-limiting fuse contact failure incident.

Description

High-voltage current-limiting fuse for electric power

Technical Field

The utility model belongs to the technical field of the high-voltage protector, concretely relates to high-voltage current limiting fuse is used to electric power.

Background

The high-voltage current-limiting fuse is suitable for an alternating current 50HZ system with a rated voltage of 3.6-12 KV, can be matched with other electrical appliances (such as switches, contactors and the like) for use, and can be used for overload or short circuit protection of electric equipment such as motors, transformers, capacitors and the like.

Chinese patent application No. 201620298804.9 discloses a high-voltage current-limiting fuse for power capacitor protection, and this high-voltage current-limiting fuse for power capacitor protection has solved when quartz sand sinks, and the arc extinction becomes the condition poor, can carry out recycle with fusing cap and fuse-link, has prevented the waste of resource, has practiced thrift production cycle.

The above patent has the following problems: the fuse tube outside of above-mentioned patent is not equipped with protection device, leads to the fuse tube to expose for a long time in external environment, takes place corrosion, ageing problem easily, has improved the incidence that high-pressure current-limiting fuse caused the bad contact incident because of corrosion, ageing scheduling problem.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a high-pressure current-limiting fuse for electric power has and avoids the fuse tube main part to contact with external environment, is difficult to consequently make the fuse tube main part take place corrosion, ageing scheduling problem, reduces because of corrosion, ageing scheduling problem cause the characteristics of high-pressure current-limiting fuse contact failure incident incidence.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an electric power is with high pressure current-limiting fuse, includes the fuse tube main part, the both sides of fuse tube main part all are equipped with the nut, the top of fuse tube main part just is located and is provided with first protective housing between two nuts, one side of first protective housing is removed and is connected with the removal semi-ring, the fixed semi-ring of opposite side fixedly connected with of first protective housing, the below of fuse tube main part just is located and is provided with second protective housing between two nuts, the structure of second protective housing is the same with the structure of first protective housing, the both ends of fuse tube main part all are provided with fusing cap main part.

Preferably, a moving groove is formed in one side, away from the fixed half ring, of the first protective shell, a screw is connected to the middle position inside the moving groove, a moving block is movably connected to the screw, the moving block is connected with the movable half ring, and a threaded ring is in threaded connection with one side, close to the fixed half ring, of the moving block on the screw.

Preferably, the outer side of the threaded ring is connected with a rubber sleeve.

Preferably, one side of the movable half ring close to the fixed half ring is connected with a rubber gasket, and the cross-sectional area of the rubber gasket is larger than that of the movable groove.

Preferably, the rubber gasket is connected with a rubber block on the inner wall of one side far away from the movable semi-ring, and the insertion groove is formed in the position, corresponding to the rubber block, of the first protection shell.

Preferably, the structure of the second protective shell is the same as that of the first protective shell.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses set up first protective housing and second protective housing, can form annular protective housing between first protective housing and second protective housing to the cover protects the fuse tube main part in the outside of fuse tube main part, avoids the fuse tube main part to contact with external environment, is difficult to consequently make the fuse tube main part take place corrosion, ageing scheduling problem, reduces because of corrosion, ageing scheduling problem causes the incidence of high-pressure current-limiting fuse contact failure incident.

2. The utility model discloses set up fixed semi-ring, shifting chute, screw rod, movable block, removal semi-ring and screw ring, the mutual cooperation between the structure makes first protective housing and second protective housing have dismantled and assembled function to when the fuse became invalid but protective structure did not damage, can dismantle first protective housing and second protective housing and get off and carry out recycle, avoid the wasting of resources.

3. The utility model discloses set up the rubber gasket, can seal the opening of living shifting chute, corrode screw ring and screw rod in avoiding external dust and moisture to get into the shifting chute to make things convenient for the later stage to twist and move the dismantlement that the screw ring realized protective housing.

4. The utility model discloses set up block rubber and inserting groove, can carry out the position to the rubber gasket and inject, avoid the rubber gasket to be lifted under the wind-force effect, improve the sealed effect of rubber gasket.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2;

fig. 4 is a left side view structural diagram of the protection states of the first protection shell and the second protection shell of the present invention;

in the figure: 1. moving the half ring; 2. a first protective housing; 3. a second protective housing; 4. a stationary half ring; 5. a fuse cap body; 6. a nut; 7. a fuse tube body; 8. a rubber gasket; 9. a rubber block; 10. inserting grooves; 11. a threaded ring; 12. a moving block; 13. a moving groove; 14. a screw.

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 the following technical solutions: the utility model provides a high-pressure current-limiting fuse for electric power, including fuse tube main part 7, the both sides of fuse tube main part 7 are all overlapped and are equipped with nut 6, fuse tube main part 7's top just is located and is provided with first protective housing 2 between two nuts 6, one side of first protective housing 2 removes and is connected with removal semi-ring 1, the opposite side fixedly connected with stationary semi-ring 4 of first protective housing 2, fuse tube main part 7's below just is located and is provided with second protective housing 3 between two nuts 6, second protective housing 3's structure is the same with first protective housing 2's structure, fuse tube main part 7's both ends all are provided with fusing cap main part 5.

Specifically, a moving groove 13 is formed on one side of the first protective housing 2 away from the fixed half ring 4, a screw 14 is connected to the middle position inside the moving groove 13, a moving block 12 is movably connected to the screw 14, in this embodiment, preferably, a moving hole is formed on the moving block 12 and corresponding to the screw 14, the inner wall of the moving hole is in a smooth structure, the moving block 12 is connected with the moving half ring 1, a threaded ring 11 is connected to the screw 14 and located on one side of the moving block 12 close to the fixed half ring 4 through threads,

by adopting the technical scheme, the movable half ring 1 can move more conveniently and rapidly.

Specifically, the outer side of the threaded ring 11 is connected with a rubber sleeve,

by adopting the technical scheme, the comfort of screwing the threaded ring 11 is improved.

Specifically, one side of the movable half ring 1 close to the fixed half ring 4 is connected with a rubber gasket 8, the cross section area of the rubber gasket 8 is larger than that of the movable groove 13,

through adopting above-mentioned technical scheme, rubber gasket 8 can seal the opening of shifting chute 13, avoids external dust and moisture to corrode screw thread ring 11 and screw rod 14 in getting into shifting chute 13 to make things convenient for the later stage to twist and move screw thread ring 11 and realize protecting housing's dismantlement.

Specifically, the inner wall of one side of the rubber gasket 8 far away from the movable semi-ring 1 is connected with a rubber block 9, the first protective shell 2 is provided with an inserting groove 10 corresponding to the rubber block 9,

through adopting above-mentioned technical scheme, the mutually supporting of block rubber 9 and inserting groove 10 can carry out the position to rubber gasket 8 and prescribe a limit to, avoids rubber gasket 8 to be lifted under the wind-force effect, improves rubber gasket 8's sealed effect.

Specifically, the structure of the second protective housing 3 is the same as that of the first protective housing 2,

by adopting the above technical scheme, the second protective housing 3 has the same function as the first protective housing 2.

The utility model discloses well connection structure and the principle between the structure of fuse cap main part 5, the structure of fuse tube main part 7 and fuse cap main part 5 and fuse tube main part 7 have been disclosed in chinese patent application No. 201620298804.9 discloses a power capacitor protection uses high-pressure current-limiting fuse.

The utility model discloses a theory of operation and use flow: when the fuse tube is used, the fuse tube main body 7 is positioned in a closed space formed by the first protective shell 2 and the second protective shell 3 and is not in contact with the external environment, so that the problems of corrosion, aging and the like are not easy to occur, and the occurrence rate of poor contact events of the high-voltage current-limiting fuse caused by the problems of corrosion, aging and the like is reduced;

when causing the fuse to lose efficacy but protective structure does not damage for a long time use, dismantle first protective housing 2 earlier, the dismantlement step is: the rubber block 9 of the rubber gasket 8 is pulled out from the inserting groove 10, the rubber gasket 8 is lifted, the moving groove 13 is opened, the threaded ring 11 is screwed reversely, the threaded ring 11 moves on the screw 14 in the direction far away from the moving block 12 until the side wall of the threaded ring 11 is abutted to the side wall of the moving groove 13, the threaded ring 11 is stopped being screwed, the moving half ring 1 moves in the direction close to the threaded ring 11 (the moving block 12 moves on the screw 14 in the direction close to the threaded ring 11, the moving block 12 drives the moving half ring 1 to move in the direction close to the threaded ring 11) until the moving half ring 1 is not contacted with the nut 6 on the first protective shell 2, the moving half ring 1 is stopped being moved, the first protective shell 2 is taken down, the second protective shell 3 is taken down according to the same method, the first protective shell 2 and the second protective shell 3 can be recycled, resource waste is avoided;

the rubber gasket 8 is used for sealing the opening of the moving groove 13 and preventing external dust and moisture from entering the moving groove 13 to corrode the threaded ring 11 and the screw 14, so that the threaded ring 11 is conveniently screwed in the later period to realize the disassembly of the protective shell;

the mutual matching of the rubber block 9 and the inserting groove 10 can limit the position of the rubber gasket 8, so that the rubber gasket 8 is prevented from being lifted under the action of wind power, and the sealing effect of the rubber gasket 8 is improved.

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 (6)

1. The utility model provides an electric power is with high pressure current limiting fuse, includes fuse tube main part (7), its characterized in that: the fuse tube comprises a fuse tube main body (7), nuts (6) are sleeved on two sides of the fuse tube main body (7), a first protective shell (2) is arranged above the fuse tube main body (7) and located between the two nuts (6), a movable half ring (1) is movably connected to one side of the first protective shell (2), a fixed half ring (4) is fixedly connected to the other side of the first protective shell (2), a second protective shell (3) is arranged between the two nuts (6) and below the fuse tube main body (7), the structure of the second protective shell (3) is identical to that of the first protective shell (2), and fuse cap main bodies (5) are arranged at two ends of the fuse tube main body (7).

2. A high voltage current limiting fuse for electrical use according to claim 1, further comprising: a moving groove (13) is formed in one side, away from the fixed half ring (4), of the first protection shell (2), a screw rod (14) is connected to the middle position inside the moving groove (13), a moving block (12) is movably connected to the screw rod (14), the moving block (12) is connected with the moving half ring (1), and a threaded ring (11) is connected to one side, close to the fixed half ring (4), of the moving block (12) on the screw rod (14) in a threaded mode.

3. A high voltage current limiting fuse for electrical use according to claim 2, further comprising: the outer side of the threaded ring (11) is connected with a rubber sleeve.

4. A high voltage current limiting fuse for electrical use according to claim 1, further comprising: one side of the movable half ring (1) close to the fixed half ring (4) is connected with a rubber gasket (8), and the cross sectional area of the rubber gasket (8) is larger than that of the movable groove (13).

5. A high voltage current limiting fuse for electrical use according to claim 4, wherein: the rubber gasket (8) is far away from one side inner wall of the movable semi-ring (1) and is connected with a rubber block (9), and an inserting groove (10) is formed in the position, corresponding to the rubber block (9), on the first protective shell (2).

6. A high voltage current limiting fuse for electrical use according to claim 1, further comprising: the structure of the second protective shell (3) is the same as that of the first protective shell (2).

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