CN209822586U - Improved 24kV fuse cylinder - Google Patents

Improved 24kV fuse cylinder Download PDF

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Publication number
CN209822586U
CN209822586U CN201921013997.9U CN201921013997U CN209822586U CN 209822586 U CN209822586 U CN 209822586U CN 201921013997 U CN201921013997 U CN 201921013997U CN 209822586 U CN209822586 U CN 209822586U
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CN
China
Prior art keywords
shielding net
fuse
improved
epoxy
voltage
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Active
Application number
CN201921013997.9U
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Chinese (zh)
Inventor
温小房
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Gu Deyi Electrical Appliances Co Ltd
Original Assignee
Xiamen Gu Deyi Electrical Appliances Co Ltd
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Priority to CN201921013997.9U priority Critical patent/CN209822586U/en
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Publication of CN209822586U publication Critical patent/CN209822586U/en
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Abstract

The utility model relates to an improved generation 24kV fuse section of thick bamboo, including the insulating barrel of epoxy, the voltage-sharing cover, the fuse jack catch, high-pressure shielding net, ground connection shielding net and conductive ring, the open end of insulating barrel one end of epoxy for having the flange, the other end is the sealed end, the voltage-sharing cover is installed in the sealed end of the insulating barrel of epoxy, and its leading-out terminal passes the insulating barrel lateral wall of epoxy and exposes, the fuse jack catch is installed in the voltage-sharing cover, the high-pressure shielding net, ground connection shielding net and conductive ring fixed mounting are in the insulating barrel of epoxy that is close to the open end, wherein, the high-pressure shielding net is the copper mesh, and the internal diameter of ground connection shielding net is 116 millimeters, highly be 55 millimeters. The utility model discloses a change the high pressure shielding net into the copper mesh from the aluminium net, greatly improved the office and put the problem to size through changing the ground connection shielding net has improved withstand voltage level.

Description

Improved 24kV fuse cylinder
Technical Field
The utility model belongs to a fuse section of thick bamboo field specifically relates to an improved generation 24kV fuse section of thick bamboo.
Background
The fuse tube is an indispensable important part in equipment such as an air inflation cabinet, a ring main unit and the like, and plays an important role in switching on and off of the switch. Generally, the fuse tube has a full epoxy structure, and the epoxy resin has good insulation properties. CN205944005U discloses a 24kV solid-sealed fuse tube, but the high-voltage shielding net of the 24kV solid-sealed fuse tube is an aluminum net, so that the problems of uneven electric field distribution and poor partial discharge exist, and the voltage-resistant level is relatively low and is only 65 kV/min.
Disclosure of Invention
The utility model aims at providing an improved generation 24kV fuse section of thick bamboo to solve above-mentioned problem. Therefore, the utility model discloses a specific technical scheme as follows:
the utility model provides an improved generation 24kV fuse section of thick bamboo, includes epoxy insulating cylinder, voltage-sharing cover, fuse jack catch, high-pressure shielding net, ground connection shielding net and conductive ring, epoxy insulating cylinder one end is for having the open end of flange, and the other end is sealed end, the voltage-sharing cover is installed in epoxy insulating cylinder's sealed end, and its leading-out terminal passes epoxy insulating cylinder lateral wall and exposes, the fuse jack catch is installed in the voltage-sharing cover, high-pressure shielding net ground connection shielding net with conductive ring fixed mounting is close to the open end in the epoxy insulating cylinder, wherein, high-pressure shielding net is the copper mesh, just ground connection shielding net's internal diameter is 116 millimeters, highly is 55 millimeters.
Furthermore, a first full-circle umbrella skirt is arranged on the epoxy resin insulating cylinder body between the flange and the wiring conductive nut of the conductive ring.
Furthermore, a second umbrella skirt surrounding the wiring conductive nut is further arranged on the epoxy resin insulating cylinder, and the second umbrella skirt is connected with the first umbrella skirt.
Further, the fuse wire claw is a quincuncial claw.
Furthermore, the wire outlet end of the voltage-sharing cover and the wiring conductive nut of the conductive ring are positioned on two opposite sides of the epoxy resin insulating cylinder.
The utility model adopts the above technical scheme, the beneficial effect who has is: the utility model discloses a change the high pressure shielding net into the copper mesh from the aluminium net, greatly improved the office and put the problem to size through changing the ground connection shielding net has improved withstand voltage level.
Drawings
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
Fig. 1 is a perspective view of an improved 24kV fuse cartridge in accordance with an embodiment of the present invention;
FIG. 2 is an exploded view of the improved 24kV fuse cartridge shown in FIG. 1;
FIG. 3 is a front view of the improved 24kV fuse block shown in FIG. 1;
fig. 4 is a partial cross-sectional view of the improved 24kV fuse block shown in fig. 3.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings and detailed description.
As shown in fig. 1 to 4, a modified 24kV fuse tube may include an epoxy resin insulating cylinder body 1, a voltage-equalizing cover 2, a fuse jaw 3, a high-voltage shielding net 4, a grounding shielding net 5, and a conductive ring 6. One end of the epoxy resin insulating cylinder 1 is an opening end with a flange 11, and the other end is a sealing end. Specifically, the epoxy resin insulation cylinder 1 is a circular cylinder, and the sealing end and the side surface of the epoxy resin insulation cylinder are provided with arc chamfers to form a bowl-shaped sealing end structure. The epoxy resin insulating cylinder 1 is of an integrally molded structure (e.g., by injection molding). The sealing end of the epoxy resin insulating cylinder 1 is provided with an opening 12 which can be positioned at an outlet 21 of the voltage-sharing cover 2.
The voltage-sharing cover 2 is installed in the sealing end of the epoxy resin insulation cylinder, and the outlet end of the voltage-sharing cover penetrates through the side wall of the epoxy resin insulation cylinder to be exposed.
The fuse jaws 3 are fixedly mounted (e.g. by screws 7) in the surge tank 2 for clamping a fuse (not shown). In the shown embodiment the fuse catch 3 is a tulip catch.
The high-voltage shielding net 4, the grounding shielding net 5 and the conductive ring 6 are fixedly arranged in the epoxy resin insulating cylinder body 1 close to the opening end. The terminal 51 of the grounding shielding net 5 is positioned on the flange 11 of the epoxy resin insulating cylinder 1, and the terminal 51 plays a role of connecting the ground wire on one hand and plays a role of fixing on the other hand. The terminal conductive nut 61 of the conductive ring 6 is exposed through the epoxy insulating cylinder sidewall between the flange 11 and the closed end. Likewise, the wiring conductive nut 61 functions to connect the electric wire on the one hand and to fix the electric wire on the other hand. Wherein, the high-voltage shielding net 4 is a copper net. The surface of the copper mesh is smoother in the manufacturing process, the problem that the electric field distribution is uneven and local and stronger due to the sharp end of the aluminum mesh is avoided, the conductivity is more excellent, the contact with an external conductor can be better guaranteed, the partial discharge problem is greatly improved, the original partial discharge is 18kV or less than 10pC, and 26.4 or less than 5pC can be achieved at present. The ground shield mesh 5 has an inner diameter of 116 mm and a height of 55 mm. This improves the creepage along the surface and improves the voltage resistance level of the product. Original withstand voltage is 65kV/min (the internal diameter is 117 millimeters, highly is 46 millimeters), the utility model discloses can reach 72 kV/min.
The first full-circle shed 13 is arranged on the epoxy resin insulating cylinder 1 between the flange 11 and the wiring conductive nut 61. In addition, a second umbrella skirt 14 surrounding the wiring conductive nut is further arranged on the epoxy resin insulating cylinder, and the second umbrella skirt 14 is connected with the first umbrella skirt 13. Creepage along the surface must bypass the first shed 13 and the second shed 14, and the performance of lightning impulse is improved. Original lightning impulse peak value is 115kV, the utility model discloses a lightning impulse peak value can reach 145 kV.
In the illustrated embodiment, the outlet end of the surge tank 2 and the terminal conductive nuts 61 of the conductive rings 6 are located on opposite sides of the epoxy insulating cylinder 1.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (5)

1. The utility model provides an improved generation 24kV fuse section of thick bamboo, includes epoxy insulating cylinder, voltage-sharing cover, fuse jack catch, high-pressure shielding net, ground connection shielding net and conductive ring, epoxy insulating cylinder one end is for having the open end of flange, and the other end is sealed end, the voltage-sharing cover is installed in epoxy insulating cylinder's sealed end, and its leading-out terminal passes epoxy insulating cylinder lateral wall and exposes, the fuse jack catch is installed in the voltage-sharing cover, high-pressure shielding net ground connection shielding net with conductive ring fixed mounting is close to the open end in the epoxy insulating cylinder, its characterized in that, high-pressure shielding net is the copper mesh, just ground connection shielding net's internal diameter is 116 millimeters, highly is 55 millimeters.
2. The improved 24kV fuse tube as claimed in claim 1, wherein a full-circumference first shed is provided on the epoxy insulating tube body between the flange and the wiring conductive nut of the conductive ring.
3. The improved 24kV fuse tube as claimed in claim 2, wherein a second shed surrounding the wiring conductive nut is further provided on the epoxy insulating tube body, and the second shed is connected to the first shed.
4. The improved 24kV fuse cartridge of claim 1, wherein the fuse jaws are tulip jaws.
5. The improved 24kV fuse block of claim 1, wherein the outlet end of the surge can and the terminal conductive nut of the conductive ring are located on opposite sides of the epoxy insulating cylinder.
CN201921013997.9U 2019-07-02 2019-07-02 Improved 24kV fuse cylinder Active CN209822586U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921013997.9U CN209822586U (en) 2019-07-02 2019-07-02 Improved 24kV fuse cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921013997.9U CN209822586U (en) 2019-07-02 2019-07-02 Improved 24kV fuse cylinder

Publications (1)

Publication Number Publication Date
CN209822586U true CN209822586U (en) 2019-12-20

Family

ID=68885070

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921013997.9U Active CN209822586U (en) 2019-07-02 2019-07-02 Improved 24kV fuse cylinder

Country Status (1)

Country Link
CN (1) CN209822586U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111696775A (en) * 2020-06-11 2020-09-22 广东电网有限责任公司清远供电局 Voltage transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111696775A (en) * 2020-06-11 2020-09-22 广东电网有限责任公司清远供电局 Voltage transformer
CN111696775B (en) * 2020-06-11 2021-10-26 广东电网有限责任公司清远供电局 Voltage transformer

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