CN210429643U - Improved structure of 35 KV isolating switch - Google Patents
Improved structure of 35 KV isolating switch Download PDFInfo
- Publication number
- CN210429643U CN210429643U CN201920853484.2U CN201920853484U CN210429643U CN 210429643 U CN210429643 U CN 210429643U CN 201920853484 U CN201920853484 U CN 201920853484U CN 210429643 U CN210429643 U CN 210429643U
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- Prior art keywords
- contact
- connecting block
- elastic
- elastic contact
- improved
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- 230000003068 static effect Effects 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims 1
- 230000006872 improvement Effects 0.000 abstract description 6
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model discloses a 35 kilovolt isolator improvement structure, including the moving contact, be the contact plate of long circle with fixing in the cross-section of first connecting block front end including first connecting block, static contact, including second connecting block, elasticity preforming and connect two rows of elastic contact fingers at second connecting block front end, first electrically conductive arm for be connected to the moving contact on the first base, and the electrically conductive arm of second, be connected to the second base with the static contact on, wherein, the contact plate inserts in two rows of elastic contact fingers the slot that constitutes, the elasticity preforming is located elastic contact finger rear side, is used for the extrusion elastic contact finger makes elastic contact finger compresses tightly the contact plate. The utility model discloses an isolator, overall structure is stable, and the contact clamp force is reliable for conductive area increases, reduces contact resistance, reduces the wearing and tearing of sound contact deciliter process, and the adjustment is nimble, non-maintaining, has improved isolator performance and life-span.
Description
Technical Field
The utility model relates to a power switching equipment field especially relates to a 35 kilovolt isolator improvement structure.
Background
In the field of power switching devices, disconnectors play an important role. The isolating switch ensures the safety of the electric and the device during maintenance work, plays a role of isolating voltage and has the defect of no arc extinguishing function.
When the isolating switch is opened and closed, the isolating switch is easy to be corroded, deformed and even broken. The guiding performance of the isolating switch is influenced if the current is light, and the grid accident is caused if the current is heavy.
If the contact of the isolating switch deforms, the contact surface between the contact and the contact finger is reduced, the contact resistance is increased, heat is generated, and the conductivity is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a 35 kilovolt isolator improvement structure to solve isolator's moving contact and warp the influence to its conductivity.
The utility model provides a 35 kilovolt isolator improvement structure, including the moving contact, be the contact plate of long circle with fixing the cross-section at first connecting block front end including first connecting block, the silvered film has on the arc surface at contact plate both ends, the static contact, including second connecting block, elasticity preforming and connect two rows of elasticity contact fingers at second connecting block front end, elasticity contact is pointed and is gone up and also has the silvered film with the contact surface of contact plate, first electrically conductive arm for be connected to the moving contact on the first base, and electrically conductive arm of second for be connected to the static contact on the second base, wherein, the contact plate inserts in two rows of elasticity contact indicate the slot that constitutes, the elasticity preforming is located elasticity contact finger rear side, is used for the extrusion elasticity is touched and is indicated and make elasticity contact finger compresses tightly the contact plate.
Further, the first conducting arm comprises two first conducting rods symmetrically arranged, wherein the first conducting rods are steel bars.
Further, the first connecting block is a section block and comprises a first hollow section part and a second hollow section part, wherein the first hollow section part is connected with the first conductive arm, and the second hollow section part is welded or riveted with the contact plate.
Further, the isolating switch further comprises a cushion block located in the inner cavity of the first hollow section portion, wherein the cushion block is in threaded connection with a plurality of bolts penetrating through the first connecting block and the first conducting rod.
Further, the second conducting arm comprises two second conducting rods which are symmetrically arranged, wherein the second conducting rods are made of steel bars.
Furthermore, the slot formed by the two rows of elastic contact fingers is in a horn mouth shape.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an isolator improvement structure, moving contact are "protruding" type, and moving contact both sides face silvering can insert "U" static contact perpendicularly for the static contact presss from both sides tight moving contact. The improved structure of the isolating switch ensures the clamping force, increases the contact area, reduces the contact resistance and has more excellent and reliable conductivity.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram illustrating a modified 35 kv disconnector structure in a closed state according to the present invention;
fig. 2 is a schematic diagram showing the improved structure of the 35 kv disconnecting switch of the present invention in a plug transition state;
fig. 3 is a schematic view showing an assembly structure of a movable contact of the isolating switch and a first conducting rod; and
fig. 4 shows an assembly structure schematic diagram of a fixed contact of the isolating switch and the second conducting rod.
Description of the reference numerals
1. A first base; 2. A first conductive arm;
3. a moving contact; 4. Static contact;
5. a second conductive arm; 6. A second base;
7. cushion blocks; 31. A first connection block;
31a, a first hollow cross-section portion; 31b, a second hollow cross-section portion;
32. a contact plate; 41. An elastic contact finger;
42. a second connecting block; 43. Elastic tabletting;
21. a first conductive rod; 51. A second conductive rod.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 to 4 show some embodiments according to the invention.
As shown in fig. 1, the improved structure of the 35 kv disconnecting switch of the present invention includes a first conductive arm 2, a moving contact 3, a static contact 4, and a second conductive arm 5.
Specifically, as shown in fig. 3, the movable contact 3 includes a first connecting block 31 and a contact plate 32 fixed at the front end of the first connecting block 31 and having an oval cross section, wherein the first connecting block 31 is a profile block and includes a first hollow section portion 31a and a second hollow section portion 31b, the first hollow section portion 31a is connected to the first conductive arm 2, and the second hollow section portion 31b is welded or riveted to the contact plate 32.
Specifically, as shown in fig. 4, the static contact 4 includes a second connection block 42, an elastic pressing piece 43, and two rows of elastic contact fingers 41 connected to the front end of the second connection block 42, when the disconnector is in a closed state, the contact plate 32 is inserted into an insertion slot formed by the second connection block 42 and the two rows of elastic contact fingers 41, and is clamped by the elastic contact fingers 41, and the elastic pressing piece 43 is located at the rear side of the elastic contact fingers 41 and is used for pressing the elastic contact fingers 41 and making the elastic contact fingers 41 press the contact plate 32.
As shown in fig. 1, a row of elastic contact fingers 41 and an elastic pressing piece 43 are connected to the front end of the second connecting block 42 by a plurality of bolts, and the insertion slot formed by the two rows of elastic contact fingers 41 is in a bell mouth shape.
Specifically, as shown in fig. 3, the first conductive arm 2 includes two first conductive rods 21 symmetrically disposed, where the first conductive rods 21 are square channel steel bars, one end of each of the two first conductive rods 21 is connected to the movable contact 3, and the other end is connected to the first base 1.
Specifically, as shown in fig. 4, the second conductive arm 5 includes two second conductive rods 51 symmetrically disposed, where the second conductive rods 51 are square steel bars, and one end of each of the two second conductive rods 51 is connected to the fixed contact 4, and the other end is connected to the second base 6.
In an embodiment, the arc surfaces at the two ends of the contact plate 32 are provided with silver coatings, and the contact surface of the elastic contact finger 41 with the contact plate 32 is also provided with a silver coating, so that the wear resistance and the contact area of the contact are increased, the contact resistance is reduced, and the performance is improved.
In an embodiment, the isolating switch further includes a spacer 7 located in the inner cavity of the first hollow section 31a, wherein the spacer 7 is threadedly connected to a plurality of bolts penetrating through the first connecting block 31 and the first conductive rod 21, and the spacer 7 is also located inside the second connecting block 42 for connecting the second conductive rod 51 and the second connecting block 42.
In this embodiment, isolator is whole, stable in structure, and the contact clamp force is reliable for conductive area increases, reduces contact resistance, reduces the wearing and tearing of sound contact deciliter process, and the adjustment is nimble, non-maintaining, has improved 35 kilovolt isolator performance.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An improved 35 kV isolating switch structure is characterized by comprising:
the moving contact (3) comprises a first connecting block (31) and a contact plate (32) which is fixed at the front end of the first connecting block (31) and has an oblong cross section, silver coating layers are arranged on the arc surfaces at the two ends of the contact plate (32),
the static contact (4) comprises a second connecting block (42), an elastic pressing sheet (43) and two rows of elastic contact fingers (41) connected to the front end of the second connecting block (42), the contact surfaces of the elastic contact fingers (41) and the contact plate (32) are also provided with silver coatings,
a first electrically conductive arm (2) for connecting the movable contact (3) to the first base (1), and
a second conductive arm (5) for connecting the stationary contact (4) to a second base (6),
the contact plate (32) is inserted into a slot formed by two rows of elastic contact fingers (41), and the elastic pressing sheet (43) is positioned on the rear side of the elastic contact fingers (41) and is used for pressing the elastic contact fingers (41) and enabling the elastic contact fingers (41) to press the contact plate (32).
2. The improved 35 kv disconnector structure of claim 1, wherein the first conducting arm (2) comprises two symmetrically arranged first conducting rods (21), wherein the first conducting rods (21) are channel steel bars.
3. The improved 35 kv disconnector structure according to claim 2, wherein the first connecting block (31) is a profile block comprising a first hollow section portion (31a) and a second hollow section portion (31b), wherein the first hollow section portion (31a) is connected with the first conductive arm (2), and the second hollow section portion (31b) is welded or riveted with the contact plate (32).
4. The improved 35 kV disconnector structure according to claim 3, further comprising a spacer block (7) located in an inner cavity of the first hollow section (31a), wherein the spacer block (7) is in threaded connection with a plurality of bolts extending through the first connecting block (31) and the first conductive rod (21).
5. The improved 35 kV disconnector structure according to claim 4, wherein the second conducting arm (5) comprises two symmetrically arranged second conducting rods (51), wherein the second conducting rods (51) are channel steel bars.
6. The improved 35 kv disconnector structure of claim 1, wherein the slots formed by the two rows of elastic contact fingers (41) are flared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920853484.2U CN210429643U (en) | 2019-06-06 | 2019-06-06 | Improved structure of 35 KV isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920853484.2U CN210429643U (en) | 2019-06-06 | 2019-06-06 | Improved structure of 35 KV isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210429643U true CN210429643U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920853484.2U Active CN210429643U (en) | 2019-06-06 | 2019-06-06 | Improved structure of 35 KV isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210429643U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593939A (en) * | 2021-08-06 | 2021-11-02 | 浙江人民电器有限公司 | Static contact and fuse type isolating switch |
| CN115165187A (en) * | 2022-06-27 | 2022-10-11 | 山东大学 | Visual device for clamping force of outdoor high-voltage isolating switch |
-
2019
- 2019-06-06 CN CN201920853484.2U patent/CN210429643U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593939A (en) * | 2021-08-06 | 2021-11-02 | 浙江人民电器有限公司 | Static contact and fuse type isolating switch |
| CN115165187A (en) * | 2022-06-27 | 2022-10-11 | 山东大学 | Visual device for clamping force of outdoor high-voltage isolating switch |
| CN115165187B (en) * | 2022-06-27 | 2024-04-26 | 山东大学 | Visual device for clamping force of outdoor high-voltage isolating switch |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 397, Tongcheng South Road, Baohe District, Hefei City, Anhui Province 230061 Patentee after: Super high voltage branch of State Grid Anhui Electric Power Co.,Ltd. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 230000, No.397, Tongcheng South Road, Baohe District, Hefei City, Anhui Province Patentee before: STATE GRID ANHUI POWER SUPPLY COMPANY OVERHAUL BRANCH Patentee before: STATE GRID CORPORATION OF CHINA |