CN211719551U - High-voltage current-limiting fuse - Google Patents
High-voltage current-limiting fuse Download PDFInfo
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- CN211719551U CN211719551U CN202020813803.XU CN202020813803U CN211719551U CN 211719551 U CN211719551 U CN 211719551U CN 202020813803 U CN202020813803 U CN 202020813803U CN 211719551 U CN211719551 U CN 211719551U
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- connecting rod
- voltage current
- clamping plate
- porcelain bushing
- fuse
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Abstract
The utility model belongs to the technical field of power equipment, in particular to a high-voltage current-limiting fuse, which comprises a post insulator and a porcelain bushing, wherein the lower end of the post insulator is provided with a mounting seat, the upper end of the post insulator is provided with a fixing clamp, and the porcelain bushing is arranged on the fixing clamp; a fuse tube is arranged in the porcelain bushing, end covers are arranged at two ends of the porcelain bushing, internal threads are arranged in the two ends of the porcelain bushing, an installing head is arranged at one end of each end cover, external threads are arranged on the outer side of the installing head, and the installing head is hollow; a bearing is arranged in the bearing, and a connecting rod is sleeved on the inner ring of the bearing; one end of the connecting rod is positioned in the mounting head and connected with the elastic component, and the other end of the connecting rod extends out of the end cover and is provided with a wire clamp; the other end of the elastic component is connected with a contact piece, and the radius of the contact piece is smaller than the radius of the interior of the mounting head; the radius of the electrode part of the fuse tube is smaller than that of the inside of the mounting head, and the electrode part is in close contact with the contact piece; the fastener includes first splint, second splint and fixing bolt. The utility model provides high fuse tube change efficiency.
Description
Technical Field
The utility model belongs to the technical field of power equipment, concretely relates to high pressure current-limiting fuse.
Background
The high-voltage current-limiting fuse is an important auxiliary device mainly used for overload and short-circuit protection of electrical equipment such as a power transformer, a voltage transformer and the like, has a long operating history in a power grid, and is widely used. At present, no other similar equipment can replace the product, but the product is designed to be too simple and coarse in the early stage, so that the defects of complex installation procedure, time waste, labor waste and the like are gradually exposed in the process of replacing the fuse tube in use, great inconvenience is brought to constructors, and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a high pressure current limiting fuse for improve fuse tube and change efficiency.
In order to solve the technical problem, the utility model discloses a technical scheme does:
a high-voltage current-limiting fuse comprises a post insulator and a porcelain bushing, wherein a mounting seat is arranged at the lower end of the post insulator, a fixing clamp is arranged at the upper end of the post insulator, and the porcelain bushing is clamped through the fixing clamp; the ceramic bushing is internally provided with a fuse tube, two ends of the ceramic bushing are provided with end covers, internal threads are arranged inside the two ends of the ceramic bushing, one end of each end cover is provided with an installation head, the end covers and the installation heads are made of ceramic, external threads are arranged on the outer sides of the installation heads, the interior of the installation heads is hollow, and the internal threads are matched with the external threads; a bearing is arranged in the end cover, and a connecting rod is sleeved on an inner ring of the bearing; one end of the connecting rod is positioned in the mounting head and is connected with an elastic component, and the other end of the connecting rod extends out of the end cover and is provided with a wire clamp; the other end of the elastic component is connected with a contact piece, and the radius of the contact piece is smaller than the radius of the interior of the mounting head; the radius of an electrode part of the fuse tube is smaller than that of the inside of the mounting head, and the electrode part is in close contact with the contact piece; the wire clamp comprises a first clamping plate, a second clamping plate and a fixing bolt; the first clamping plate is fixed on the connecting rod, and the second clamping plate is connected with the first clamping plate through a fixing bolt; a wire groove is arranged on the first clamping plate and is
And (4) shaping.
The utility model provides an among the high-pressure current-limiting fuse, preferably, be provided with first full skirt and second full skirt on the porcelain cover.
In the high-voltage current-limiting fuse provided by the utility model, further preferably, the first shed is greater than the second shed.
In the high-voltage current-limiting fuse provided by the utility model, still more preferably, first full skirt and second full skirt set up in turn on the porcelain bushing.
The utility model provides an among the high-pressure current-limiting fuse, further preferably again, be provided with the mounting hole on the mount pad.
In the high voltage current limiting fuse provided by the present invention, it is still further preferred that the elastic member is a spring.
Adopt above-mentioned technical scheme, because the inside internal thread that has set up in the both ends of insulator, end cover and installation head are made by pottery, be provided with the external screw thread outside installing the head, install the inside cavity of head, set up the bearing in the end cover, the connecting rod has been established to the cover that sets up on the bearing inner race, connecting rod one end is connected with elastomeric element, other end connecting clamp, the contact piece is connected to elastomeric element's the other end, make the end cover can install on the insulator very conveniently, also can be very convenient dismantle from the insulator, it is very convenient when carrying out the fuse body and changing, time saving and labor saving, it is very high more efficient. Set up first full skirt and second full skirt on the insulator, the effectual creepage distance that increases on the insulator to improve insulating effect.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1;
FIG. 3 is a schematic structural view of the middle cover of the present invention after being separated from the porcelain bushing;
fig. 4 is a schematic structural view of a first clamping plate of the present invention;
in the figure: 1-post insulator, 2-porcelain bushing, 3-mounting seat, 4-fixing clamp, 5-fuse tube, 6-end cover, 7-internal thread, 8-mounting head, 9-external thread, 10-bearing, 11-connecting rod, 12-elastic component, 13-wire clamp, 14-contact piece, 15-electrode part, 16-first clamping plate, 17-second clamping plate, 18-fixing bolt, 19-wire groove, 20-first shed, 21-second shed and 22-mounting hole.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
A high-voltage current-limiting fuse is shown in figures 1 to 4 and comprises a post insulator 1 and a porcelain bushing 2, wherein a mounting seat 3 is arranged at the lower end of the post insulator 1, a fixing clamp 4 is arranged at the upper end of the post insulator 1, and the porcelain bushing 2 is clamped by the fixing clamp 4; be provided with fuse tube 5 in insulator 2, be provided with end cover 6 at the both ends of insulator 2, be provided with internal thread 7 in the inside both ends of insulator 2, be provided with installation head 8 in the one end of end cover 6, the outside of installing head 8 is provided with external screw thread 9, the inside cavity of installation head 8, internal thread 7 and external screw thread 9 phase-match, that is to say that end cover 6 can twist in insulator 2. A bearing 10 is arranged in the end cover 6, and a connecting rod 11 is sleeved on the inner ring of the bearing 10; one end of the connecting rod 11 is positioned in the mounting head 8 and is connected with an elastic part 12, and the other end of the connecting rod 11 extends out of the end cover 6 and is provided with a wire clamp 13; the other end of the elastic member 12 is connected with a contact piece 14, and the radius of the contact piece 14 is smaller than the radius of the inside of the mounting head 8, that is, the contact piece 14 can move back and forth in the inside of the mounting head 8 along with the elastic member 12. The elastic member 12 is a spring. The radius of the electrode part 15 of the fuse tube 5 is smaller than the radius of the inside of the mounting head 8, that is, the electrode part 15 can extend into the mounting head 8, and the electrode part 15 is in close contact with the contact piece 14; the wire clamp 13 comprises a first clamping plate 16, a second clamping plate 17 and a fixing bolt 18; the first clamping plate 16 is fixed on the connecting rod 11, and the second clamping plate 17 is connected with the first clamping plate 16 through a fixing bolt 18; a line groove 19 is arranged on the first clamping plate 16, and the line groove 19 is
In this way, the wire groove 19 is designed in such a shape that the wire can be effectively prevented from slipping out of the wire groove 19. The connecting rod 11 and the wire clamp 13 are both made of metal aluminum, are not easy to rust, do not affect the disassembly, and have long service life. The end cap 6 and the mounting head 8 are both made of ceramic as is the porcelain sleeve 2.
The porcelain sleeve 2 is provided with a first umbrella skirt 20 and a second umbrella skirt 21, and the first umbrella skirt 20 is larger than the second umbrella skirt 21. The first sheds 20 and the second sheds 21 are alternately arranged on the porcelain bushing 2. The creepage distance on the porcelain sleeve 2 can be effectively increased by the design, so that the insulation effect is improved.
In order to facilitate the installation of the high-voltage current-limiting fuse, a mounting hole 22 is provided on the mounting base 3.
The utility model discloses be operated like this when carrying out fuse 5 and change: the end cap 6 on one side is unscrewed from the porcelain bushing 2, the fuse tube 5 is ejected from one end of the unscrewed end cap 6 under the elastic force of the elastic member 12 on the other end, and the old fuse tube 5 is taken away. The new fuse tube 5 is placed into the porcelain bushing 2, the end cover 6 is screwed down, and the work of replacing the fuse tube 5 is completed, so that the time and the labor are saved, and the fuse tube is very convenient. Because the bearing 10 is arranged in the end cover 6, when the end cover 6 is unscrewed from the porcelain bushing 2 or the end cover 6 is screwed on the porcelain bushing 2, the connecting rod 11 cannot rotate along with the end cover 6 when the end cover 6 is rotated, and the wire clamp 13 cannot rotate, so that the electric wire connected to the wire clamp 13 does not need to be detached when the fuse tube 5 is replaced. When the end cap 6 is rotated after the contact piece 14 abuts against the electrode portion 15, the fuse tube 5 does not rotate. Since the end cap 6 and the mounting head 8 are made of ceramics like the porcelain bushing 2, rust does not occur, and therefore, it is more convenient to replace the fuse tube 5.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (6)
1. High-voltage current-limiting fuseThe breaker is characterized by comprising a post insulator and a porcelain bushing, wherein the lower end of the post insulator is provided with a mounting seat, the upper end of the post insulator is provided with a fixing clamp, and the porcelain bushing is clamped by the fixing clamp; the ceramic bushing is internally provided with a fuse tube, two ends of the ceramic bushing are provided with end covers, internal threads are arranged inside the two ends of the ceramic bushing, one end of each end cover is provided with an installation head, the end covers and the installation heads are made of ceramic, external threads are arranged on the outer sides of the installation heads, the interior of the installation heads is hollow, and the internal threads are matched with the external threads; a bearing is arranged in the end cover, and a connecting rod is sleeved on an inner ring of the bearing; one end of the connecting rod is positioned in the mounting head and is connected with an elastic component, and the other end of the connecting rod extends out of the end cover and is provided with a wire clamp; the other end of the elastic component is connected with a contact piece, and the radius of the contact piece is smaller than the radius of the interior of the mounting head; the radius of an electrode part of the fuse tube is smaller than that of the inside of the mounting head, and the electrode part is in close contact with the contact piece; the wire clamp comprises a first clamping plate, a second clamping plate and a fixing bolt; the first clamping plate is fixed on the connecting rod, and the second clamping plate is connected with the first clamping plate through a fixing bolt; a wire groove is arranged on the first clamping plate and is
And (4) shaping.
2. The high voltage current limiting fuse of claim 1, wherein the porcelain bushing is provided with a first shed and a second shed.
3. The high voltage current limiting fuse of claim 2, wherein the first shed is larger than the second shed.
4. The high voltage current limiting fuse of claim 3, wherein said first sheds and second sheds are alternately disposed on said porcelain bushing.
5. The high voltage current limiting fuse of claim 4 wherein said mounting block is provided with mounting holes.
6. The high voltage current limiting fuse of claim 5 wherein said resilient member is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020813803.XU CN211719551U (en) | 2020-05-15 | 2020-05-15 | High-voltage current-limiting fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020813803.XU CN211719551U (en) | 2020-05-15 | 2020-05-15 | High-voltage current-limiting fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211719551U true CN211719551U (en) | 2020-10-20 |
Family
ID=72836455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020813803.XU Active CN211719551U (en) | 2020-05-15 | 2020-05-15 | High-voltage current-limiting fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211719551U (en) |
-
2020
- 2020-05-15 CN CN202020813803.XU patent/CN211719551U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 062559 Xin Zhong Yi Zhen Hui Bo Kou Cun, Renqiu City, Cangzhou City, Hebei Province Patentee after: Kaituo Electric Group Co., Ltd. Address before: 062559 Xin Zhong Yi Zhen Hui Bo Kou Cun, Renqiu City, Cangzhou City, Hebei Province Patentee before: Hebei Kaituo Electric Co.,Ltd. |