CN211265404U - Outdoor closed type jet fuse - Google Patents

Abstract

The utility model is suitable for the technical field of protective electrical equipment, and provides an outdoor closed type injection fuse, which comprises a fuse part for breaking an overload circuit and a shell for protecting the fuse part, wherein the fuse part comprises a metal cap, a first pipeline is screwed on the inner side wall of the metal cap, a second pipeline is fixedly communicated on the lower surface of the first pipeline, an electrode is sleeved on the outer side wall of the first pipeline, a compression spring is arranged between the electrode and the second pipeline, silver blocks are respectively fixed on the two inner sides of the first pipeline and the second pipeline, an insulating pad is respectively fixed on the opposite side of the silver blocks, a heat conducting strip is embedded on the outer side wall of the second pipeline, a wire outlet is arranged at the bottom of the second pipeline, when a fuse wire fuses to cut off current, the heat of the first pipeline and the second pipeline is transmitted to the silver blocks through the insulating pad, then, heat is dissipated through the heat-conducting sheet.

Description

Outdoor closed type jet fuse

Technical Field

The utility model belongs to the technical field of protection electrical apparatus, especially, relate to an outdoor closed type expulsion fuse.

Background

Fuses, also known as current fuses, are used primarily for overload protection. When the fuse is correctly arranged in the circuit, the fuse can be fused to cut off the current when the current is abnormally increased to a certain height and heat, so that the safe operation of the circuit is protected; when a circuit is in fault or abnormal, the current is increased, and the increased current may damage some important devices in the circuit, and may burn the circuit or even cause fire. If the fuse is correctly arranged in the circuit, the fuse can be fused to cut off the current when the current abnormally rises to a certain height and heat, thereby playing a role in protecting the safe operation of the circuit.

Current fuse, the radiating effect is poor to influence the life of fuse, on the other hand current fuse is very inconvenient when storing and taking, thereby brings certain trouble for operating personnel.

SUMMERY OF THE UTILITY MODEL

The utility model provides an outdoor closed type expulsion fuse, it is poor to aim at solving current fuse radiating effect to and the fuse is storing and inconvenient problem when taking.

The utility model discloses a realize like this, an outdoor closed type expulsion fuse, including the fuse-element that is used for breaking overload circuit and the shell that is used for protecting the fuse-element, the fuse-element is located inside the shell, and can dismantle the connection with the shell, the fuse-element includes the metal cap, the spiro union has first pipeline on the inside wall of metal cap, fixed intercommunication has the second pipeline on the lower surface of first pipeline, the cover is equipped with the electrode on the lateral wall of first pipeline, the electrode with be provided with compression spring between the second pipeline, compression spring's both ends respectively with the electrode with the second pipeline fixed connection;

first pipeline with the inside both sides of second pipeline all are fixed with silver piece, two one side that silver piece is relative all is fixed with the insulating pad, the second pipeline with all inlay on the lateral wall of first pipeline has a plurality of conducting strips, one side of electrode is inlayed and is had the fixing base, the spiro union has first bolt on the inside wall of fixing base, the wire hole has been seted up to the bottom of second pipeline.

Preferably, the first pipeline and the second pipeline are both made of epoxy resin.

Preferably, a high-voltage shielding net is fixed on the rear surface of the interior of the first pipeline.

Preferably, the shell comprises an upper outlet pipe, a porcelain bushing is fixedly communicated with the lower surface of the upper outlet pipe, a support column is fixedly communicated with the lower surface of the porcelain bushing, and a lower outlet pipe is fixedly communicated with the outer side wall of the support column;

and the bottom of the support column is screwed with a sealing cover.

Preferably, the intermediate position department of insulator is provided with first semicircle spare and second semicircle spare, first semicircle spare with second semicircle spare sets up relatively, and first semicircle spare with second semicircle spare spiro union, be fixed with the link plate on the lateral wall of second semicircle spare, the upper surface of link plate is provided with the staple bolt, the staple bolt with the connection can be dismantled to the link plate.

Preferably, the shell further comprises a fixing assembly, the fixing assembly is composed of a second bolt, a nut and a gasket, the nut is located above the hoop, the second bolt penetrates through the hanging plate and the hoop and is in threaded connection with the nut, and the gasket is located between the nut and the hoop and is fixedly connected with the hoop.

Preferably, the sealing cover is made of polyethylene resin.

Preferably, the insulating pad is provided in a trapezoidal shape.

Compared with the prior art, the beneficial effects of the utility model are that: by arranging the fuse link, when the fuse fuses and cuts off current, heat of the first pipeline and the second pipeline is transmitted to the silver block through the insulating pad, and then heat is dissipated through the heat conducting fins, so that the temperature in the pipelines is reduced; through setting up the shell, when operating personnel need take and put during the fuse-link, will the sealed cowling is followed pull down on the support column, then will the fuse-link is put into in the shell, then will the sealed cowling is installed on the support column, thereby under the effect of shell, the protection the outer wall of fuse-link effectively avoids directly taking and puts the problem that the fuse-link caused the damage.

Drawings

FIG. 1 is a schematic view of the internal structure of the housing of the present invention;

fig. 2 is a front view of the housing of the present invention;

fig. 3 is a front view of the fuse of the present invention;

fig. 4 is a front view of the fuse of the present invention when the compression spring is reset;

fig. 5 is a schematic view of the internal structure of the first pipeline in the fuse of the present invention;

fig. 6 is a schematic view of the internal structure of the second pipe in the fuse of the present invention;

in the figure: 1-fuse element, 11-metal cap, 12-first pipeline, 121-high-voltage shielding net, 13-second pipeline, 131-wire outlet hole, 14-electrode, 15-compression spring, 16-silver block, 17-insulating pad, 18-heat conducting sheet, 19-fixed seat, 191-first bolt, 2-shell, 21-upper outlet pipe, 22-porcelain bushing, 23-supporting column, 231-sealing cover, 24-lower outlet pipe, 25-first semi-circular arc element, 26-second semi-circular arc element, 27-hanging plate, 28-hoop, 29-fixing component, 291-second bolt, 292-nut and 293-gasket.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-6, an outdoor enclosed type expulsion fuse includes a fuse element 1 for breaking an overload circuit and a housing 2 for protecting the fuse element 1, the fuse element 1 is located inside the housing 2 and detachably connected with the housing 2, the fuse element 1 includes a metal cap 11, a first pipe 12 is screwed on an inner side wall of the metal cap 11, a second pipe 13 is fixedly communicated on a lower surface of the first pipe 12, an electrode 14 is sleeved on an outer side wall of the first pipe 12, a compression spring 15 is arranged between the electrode 14 and the second pipe 13, and two ends of the compression spring 15 are respectively fixedly connected with the electrode 14 and the second pipe 13;

first pipeline 12 and second pipeline 13's inside both sides all are fixed with silver bullion 16, and two silver bullion 16 relative one sides all are fixed with insulating pad 17, all inlay on the lateral wall of second pipeline 13 and first pipeline 12 and have a plurality of conducting strips 18, and one side of electrode 14 is inlayed and is had fixing base 19, and the spiro union has first bolt 191 on fixing base 19's the inside wall, and wire hole 131 has been seted up to the bottom of second pipeline 13.

In this embodiment, the fuse 1 is detachably connected to the housing 2 through the sealing cover 231, the circular protrusion is further fixed on the front surface of the second pipeline 13, the circular groove matched with the circular protrusion is fixed on the inner side wall of the electrode 14, and since the force applied to the compression spring 15 is not uniform when the compression spring 15 is limited by the first bolt 191, the compression spring 15 is easily damaged after long-term use, the electrode 14 is clamped on the second pipeline 13 under the action of the circular protrusion and the circular groove, so that the compression spring 15 is limited by two forces, and the service life of the compression spring 15 is prolonged;

the metal cap 11 is screwed with the first pipeline 12, so that the metal cap 11 is directly unscrewed, the fuse wire is sent into the second pipeline 13 through the first pipeline 12, and the fuse wire is placed; the electrode 14 is arranged, so that the electrode 14 and the compression spring 15 are matched for use, and the other end of the fuse is fixed;

by arranging the silver block 16 and the insulating pad 17, when the fuse wire is fused, the insulating pad 17 quickly transfers heat in the first pipeline 12 to the silver block 16, and then the heat conduction speed is accelerated and the temperature in the pipeline is reduced under the action of the heat conducting fin 18;

by providing the fixing seat 19 and the first bolt 191, when the operator inserts the fuse into the first pipe 12 and the second pipe 13 and takes out the surplus length of the fuse from the outlet hole 131, then pulls the electrode 14 downward and winds the surplus length of the fuse around the first bolt 191, and then rotates the first bolt 191 to fasten the other end of the fuse while the first bolt 191 contacts the outer sidewall of the first pipe 12, thereby restricting the return of the compression spring 15.

In the present embodiment, the metal cap 11 is unscrewed, the T-shaped fuse is inserted into the first pipe 12 and the second pipe 13, the surplus fuse is led out from the outlet hole 131, then the electrode 14 is pushed downward, so that the electrode 14 drives the compression spring 15 to compress, finally, the surplus fuse is wound on the first bolt 191, the first bolt 191 is tightened, so that the first bolt 191 contacts with the outer side wall of the first pipe 12, at this time, the electrode 14 is loosened, so that the compression spring 15 is pressed against the first bolt 191, thereby limiting the return of the compression spring 15, at the same time, the compression spring 15 is doubly limited by the action of the circular protrusion and the circular groove, so that the fuse is fixed, then the sealing cover 231 is detached from the supporting pillar 23, and the mounted fuse 1 is inserted into the porcelain bushing 22, and the sealing cover 231 is tightened, thereby protecting the fuse 1, damage to the first and second pipes 12 and 13 during handling and transportation is prevented.

Further, the first pipe 12 and the second pipe 13 are made of epoxy resin.

In this embodiment, the first pipe 12 and the second pipe 13 are made of epoxy resin, so that the pipes made of epoxy resin have good electrical insulation and are acid-base resistant, so that the pipes made of epoxy resin have long service life and improve the distribution of electric fields.

Further, a high voltage shielding net 121 is fixed on the rear surface of the inside of the first duct 12.

In this embodiment, by providing the high voltage shielding net 121, since an air gap is easily formed between the fuse and the insulating pad 17, and the fuse surface is not smooth, an electric field is easily concentrated, so that the high voltage shielding net 121 is installed, the high voltage shielding net 121 is in contact with the fuse, the contact area of the fuse is increased, the electric field distribution concentration is avoided, and the partial discharge is reduced.

Further, the housing 2 comprises an upper outlet pipe 21, a porcelain bushing 22 is fixedly communicated with the lower surface of the upper outlet pipe 21, a support column 23 is fixedly communicated with the lower surface of the porcelain bushing 22, and a lower outlet pipe 24 is fixedly communicated with the outer side wall of the support column 23;

the bottom of the support column 23 is screwed with a sealing cover 231.

In the embodiment, the upper outlet pipe 2 and the lower outlet pipe 24 are arranged, so that the external device can be conveniently connected with the circuit of the device under the action of the upper outlet pipe 21 and the lower outlet pipe 24, and the stability of the device is improved under the action of the supporting column 23 by arranging the supporting column 23; by arranging the porcelain bushing 22, under the action of the porcelain bushing 22, on one hand, the pipeline is protected from being damaged, and on the other hand, a good insulating environment is provided for placing the pipeline;

by providing the sealing cover 231, dust and dirt are prevented from entering the inside of the apparatus by the sealing cover 231, and also the function of guiding the fuse 1 into the housing 2 is achieved.

Further, the middle position of the porcelain bushing 22 is provided with a first semicircular arc piece 25 and a second semicircular arc piece 26, the first semicircular arc piece 25 and the second semicircular arc piece 26 are arranged oppositely, the first semicircular arc piece 25 is in threaded connection with the second semicircular arc piece 26, a hanging plate 27 is fixed on the outer side wall of the second semicircular arc piece 26, the upper surface of the hanging plate 27 is provided with a hoop 28, and the hoop 28 is detachably connected with the hanging plate 27.

In the embodiment, the first semicircular arc piece 25 and the second semicircular arc piece 26 are arranged, so that the porcelain sleeve 22 can be conveniently fixed under the action of the semicircular arc pieces, an operator can fix one end of the hoop 28 with an external device, and the other end of the hoop 28 is connected with the hanging plate 27, so that the device can be fixed;

simultaneously under the effect of semicircle spare, operating personnel only need hold staple bolt 28 with one hand, and the sealed cowling 231 is dragged to the other hand, just can take and put and transport the pipeline to avoid operating personnel direct and pipeline contact, reduced the risk of pipeline damage.

Further, the housing 2 further includes a fixing assembly 29, the fixing assembly 29 is composed of a second bolt 291, a nut 292 and a washer 293, the nut 292 is located above the hoop 28, the second bolt 291 penetrates through the hanging plate 27 and the hoop 28 and is screwed with the nut 292, and the washer 293 is located between the nut 292 and the hoop 28 and is fixedly connected with the hoop 28.

In the embodiment, by arranging the fixing assembly 29, an operator can screw one end of the hoop 28 with an external device, then place the other end of the hoop 28 on the upper surface of the hanging plate 27, and thread the second bolt 291 through the hanging plate 27 and the hoop 28 and tighten the bolt by the nut 292, so that the device can be fixed by the hoop 28, pre-punching fixation is avoided, and the use of the operator is facilitated;

by arranging the gasket 293, the fixation of the hoop 28 and the hanging plate 27 is enhanced under the action of the gasket 293.

Further, the sealing cap 231 is made of a polyethylene resin.

In this embodiment, the sealing cover 231 is made of a polyethylene resin, and the polyethylene resin is a thermoplastic resin, so that the polyethylene resin has certain electrical insulation performance and solvent resistance, and a good insulation environment is provided for the storage of the pipeline under the action of the sealing cover 231.

Further, the insulating pad 17 is provided in a trapezoidal shape.

In this embodiment, through setting up insulating pad 17 and being trapezoidal form, because most fuses on the market are T type structure, the fuse that makes when the installation carry on spacingly through insulating pad 17 upper surface sunken radian, on the other hand when the fuse contacts with insulating pad 17, leaves certain space to the convenience is to the change of fuse.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. An outdoor enclosed type expulsion fuse comprising a fuse element (1) for breaking an overload circuit and a housing (2) for protecting the fuse element (1), the fuse element (1) being located inside the housing (2) and being detachably connected with the housing (2), characterized in that: the fuse element (1) comprises a metal cap (11), a first pipeline (12) is connected to the inner side wall of the metal cap (11) in a threaded mode, a second pipeline (13) is fixedly communicated with the lower surface of the first pipeline (12), an electrode (14) is sleeved on the outer side wall of the first pipeline (12), a compression spring (15) is arranged between the electrode (14) and the second pipeline (13), and two ends of the compression spring (15) are fixedly connected with the electrode (14) and the second pipeline (13) respectively;

first pipeline (12) with the inside both sides of second pipeline (13) all are fixed with silver bullion (16), two one side that silver bullion (16) is relative all is fixed with insulating pad (17), second pipeline (13) with all inlay on the lateral wall of first pipeline (12) and have a plurality of conducting strips (18), one side of electrode (14) is inlayed and is had fixing base (19), the spiro union has first bolt (191) on the inside wall of fixing base (19), wire hole (131) have been seted up to the bottom of second pipeline (13).

2. An outdoor enclosed type expulsion fuse according to claim 1, wherein: the first pipeline (12) and the second pipeline (13) are both made of epoxy resin.

3. An outdoor enclosed type expulsion fuse according to claim 1, wherein: a high-voltage shielding net (121) is fixed on the rear surface of the inner part of the first pipeline (12).

4. An outdoor enclosed type expulsion fuse according to claim 1, wherein: the shell (2) comprises an upper outlet pipe (21), a porcelain bushing (22) is fixedly communicated with the lower surface of the upper outlet pipe (21), a supporting column (23) is fixedly communicated with the lower surface of the porcelain bushing (22), and a lower outlet pipe (24) is fixedly communicated with the outer side wall of the supporting column (23);

the bottom of the support column (23) is screwed with a sealing cover (231).

5. An outdoor enclosed ejector fuse according to claim 4 wherein: the utility model discloses a link plate, including insulator (22), the intermediate position department of insulator (22) is provided with first semicircle spare (25) and second semicircle spare (26), first semicircle spare (25) with second semicircle spare (26) set up relatively, and first semicircle spare (25) with second semicircle spare (26) spiro union, be fixed with link plate (27) on the lateral wall of second semicircle spare (26), the upper surface of link plate (27) is provided with staple bolt (28), staple bolt (28) with link plate (27) can be dismantled the connection.

6. An outdoor enclosed ejector fuse according to claim 5, wherein: the shell (2) still includes fixed subassembly (29), fixed subassembly (29) comprises second bolt (291), nut (292) and packing ring (293), nut (292) are located the top of staple bolt (28), second bolt (291) run through link plate (27) with staple bolt (28), and with nut (292) spiro union, packing ring (293) are located nut (292) with between staple bolt (28), and with staple bolt (28) fixed connection.

7. An outdoor enclosed ejector fuse according to claim 6, wherein: the sealing cover (231) is made of polyethylene resin.

8. An outdoor enclosed type expulsion fuse according to claim 1, wherein: the insulating pad (17) is arranged in a trapezoidal shape.

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