CN220121681U - Double-contact structure air-blown SF6 load switch - Google Patents
Double-contact structure air-blown SF6 load switch Download PDFInfo
- Publication number
- CN220121681U CN220121681U CN202321391463.6U CN202321391463U CN220121681U CN 220121681 U CN220121681 U CN 220121681U CN 202321391463 U CN202321391463 U CN 202321391463U CN 220121681 U CN220121681 U CN 220121681U
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- CN
- China
- Prior art keywords
- contact
- fixed
- moving contact
- load switch
- silver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052802 copper Inorganic materials 0.000 claims abstract description 29
- 239000010949 copper Substances 0.000 claims abstract description 29
- 241000405070 Percophidae Species 0.000 claims abstract description 5
- 239000004677 Nylon Substances 0.000 claims description 8
- 229920001778 nylon Polymers 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 5
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 3
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 abstract description 3
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model relates to the field of gas-insulated closed switch equipment, and discloses a double-contact structure gas-blown SF6 load switch, which comprises a fixed contact assembly and a moving contact assembly, wherein the fixed contact assembly is detachably connected with the moving contact assembly, the fixed contact assembly comprises a conductive piece, the outer surface of the conductive piece is rotationally connected with a ring body, a plurality of quincuncial contact finger type outer fixed contacts are fixed on the outer surface of the ring body, two duckbill type inner fixed contacts are fixed at the bottom of the conductive piece, the moving contact assembly comprises a silver-plated copper piston which is used as an outer moving contact, and the double-layer double-group contact structure is arranged, so that the double-contact structure can be used for quickly splicing and installing, the stability is improved, the contact resistance is effectively reduced on the basis of meeting the moving stability, the inner moving contact is made of tungsten copper alloy, and the extinguishing efficiency is improved.
Description
Technical Field
The utility model relates to the field of gas-insulated closed switch equipment, in particular to a double-contact structure gas-blown SF6 load switch.
Background
At present, with the continuous and deep development of urban network construction and transformation in China, load switch equipment is increasingly applied to ring network power supply and terminal power transmission of 12-40.5 kV power distribution systems. The SF6 single-pressure type air-blowing load switch is widely applied by the characteristics of simple structure, low price, more switching times and excellent arc extinguishing performance, but the single contact of the existing air-blowing SF6 load switch cannot effectively reduce contact resistance on the basis of meeting dynamic stability, so that the air-blowing SF6 load switch with a double-contact structure is lacking.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a double-contact structure air-blown SF6 load switch, which solves the problems in the prior art.
In order to solve the technical problems, according to one aspect of the utility model, the utility model more particularly relates to a double-contact structure air-blown SF6 load switch, which comprises a fixed contact assembly and a moving contact assembly, wherein the fixed contact assembly is detachably connected with the moving contact assembly, the fixed contact assembly comprises a conductive piece, the outer surface of the conductive piece is rotationally connected with a ring body, a plurality of quincuncial contact finger type outer fixed contacts are fixed on the outer surface of the ring body, two duckbill type inner fixed contacts are fixed at the bottom of the conductive piece, the moving contact assembly comprises a silver-plated copper piston which is used as an outer moving contact, an annular groove is formed on the outer surface of the silver-plated copper piston which is used as the outer moving contact, an inner copper moving contact is connected with an inner copper thread, and the top of the inner copper moving contact is positioned above the outer moving contact which is used as the silver-plated copper piston, and a nylon guide cap is fixed.
Furthermore, the bottom end of the duckbill-shaped inner fixed contact is positioned in the outer moving contact made of the silver-plated copper piston.
Furthermore, the quincuncial contact finger type outer fixed contact is of an L-shaped structure.
Furthermore, the bottom end of the quincuncial contact finger type outer fixed contact is matched with the inner part of the ring groove.
Furthermore, the top of the nylon guide cap is in a truncated cone-shaped structure.
Furthermore, the opposite sides of the two duckbill-shaped inner fixed contacts are of arc-shaped structures.
The utility model discloses an air-blown SF6 load switch with a double-contact structure, which has the beneficial effects that:
according to the utility model, through the double-layer double-group contact structure, the contact resistance can be quickly inserted and installed, so that the stability is improved and the contact resistance is reduced, and through setting the external fixed contact as a quincuncial contact finger, the contact resistance is effectively reduced on the basis of meeting the dynamic stability, and the internal movable contact is made of tungsten-copper alloy and is longer than the external contact, so that the arc extinguishing efficiency is improved.
Drawings
The utility model will be described in further detail with reference to the accompanying drawings and detailed description.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of a stationary contact assembly according to the present utility model;
FIG. 3 is a schematic cross-sectional view of a moving contact assembly according to the present utility model;
fig. 4 is a schematic bottom view of the ring body and the quincuncial contact finger type outer stationary contact in the present utility model;
fig. 5 is a schematic perspective view of a quincuncial contact finger type outer static contact in the present utility model.
In the figure: 1. a stationary contact assembly; 2. a moving contact assembly; 3. the silver-plated copper piston is used as an outer moving contact; 4. a ring groove; 5. a copper inner moving contact; 6. nylon guide cap; 7. a conductive member; 8. a ring body; 9. quincuncial contact finger type outer fixed contact; 10. duckbill type inner static contact.
Detailed Description
The utility model will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
As shown in fig. 1 to 5, according to an aspect of the present utility model, there is provided an air-blown SF6 load switch with a double-contact structure, including a fixed contact assembly 1 and a movable contact assembly 2, wherein: the fixed contact assembly 1 is connected with the moving contact assembly 2 in a disassembling mode, the fixed contact assembly 1 comprises a conductive piece 7, the outer surface of the conductive piece 7 is rotationally connected with a ring body 8, a plurality of quincuncial contact finger type outer fixed contacts 9 are fixedly arranged on the outer surface of the ring body 8, two duckbill type inner fixed contacts 10 are fixedly arranged at the bottom of the conductive piece 7, the moving contact assembly 2 comprises a silver-plated copper piston which is used for making an outer moving contact 3, an annular groove 4 is formed in the outer surface of the silver-plated copper piston which is used for making an outer moving contact 3, a copper inner moving contact 5 is connected with the inner thread of the silver-plated copper piston, the top of the copper inner moving contact 5 is positioned above the silver-plated copper piston which is used for making the outer moving contact 3, a nylon guide cap 6 is fixedly arranged on the outer quincuncial contact finger type outer fixed contacts 9, and the contact resistance is effectively reduced on the basis of meeting moving stability. The copper inner moving contact 5 is made of tungsten copper alloy and is mainly used for extinguishing electric arcs.
In this embodiment, the bottom end of the duckbill-type inner fixed contact 10 is located inside the silver-plated copper piston as the outer moving contact 3, and the duckbill-type inner fixed contact 10 is clamped inside the silver-plated copper piston as the outer moving contact 3 by the bottom end protrusion of the duckbill-type inner fixed contact 10.
In this embodiment, the quincuncial contact finger type outer fixed contact 9 has an L-shaped structure.
In this embodiment, the bottom end of the quincuncial contact finger type outer fixed contact 9 is matched with the inside of the ring groove 4, and is clamped into the inside of the ring groove 4 through the bottom end bulge so as to be connected.
In the embodiment, the top of the nylon guide cap 6 is in a truncated cone-shaped structure, so that the quincuncial contact finger type outer fixed contact 9 can be guided to be bent and opened.
In this embodiment, the opposite sides of the two duckbill-type inner fixed contacts 10 are all in arc-shaped structures, so that when extrusion is received, the two duckbill-type inner fixed contacts 10 can be relatively closed.
The working principle of the device is as follows: when the fixed contact assembly 1 is inserted into the moving contact assembly 2, the inner side of the quincuncial contact finger type outer fixed contact 9 is guided by the nylon guide cap 6 to open, the protrusion is known to be clamped into the annular groove 4, the two duckbilled inner fixed contacts 10 are limited and close by the inner part of the copper inner moving contact 5, and the silver-plated copper piston is inserted into the silver-plated copper piston to be reset and fixed in a limiting manner after the inner part of the outer moving contact 3, so that the fixed contact assembly 1 is fixedly connected with the moving contact assembly 2, and the contact resistance is effectively reduced on the basis of meeting the moving stability.
Of course, the above description is not intended to limit the utility model, but rather the utility model is not limited to the above examples, and variations, modifications, additions or substitutions within the spirit and scope of the utility model will be within the scope of the utility model.
Claims (6)
1. The utility model provides a two contact structure air-blowing SF6 load switch, includes static contact subassembly (1) and moving contact subassembly (2), its characterized in that: the utility model provides a silver-plated copper movable contact, including moving contact subassembly (2), fixed contact subassembly (1) with moving contact subassembly (2) dismantles and is connected, fixed contact subassembly (1) is including electrically conductive piece (7), electrically conductive piece (7) surface rotation is connected with ring body (8), ring body (8) external surface fixation has a plurality of quincuncial to touch outer fixed contact (9), electrically conductive piece (7) bottom is fixed with two duckbilled interior fixed contact (10), moving contact subassembly (2) are including silver-plated copper piston and are outer moving contact (3), silver-plated copper piston is outer moving contact (3) surface and has seted up annular (4), silver-plated copper piston is outer moving contact (3) internal thread connection and is had moving contact (5) in copper, moving contact (5) top are located silver-plated copper piston is outer moving contact (3) top and is fixed with nylon direction cap (6).
2. The dual contact structure air blown SF6 load switch of claim 1, wherein: the bottom end of the duckbill type inner fixed contact (10) is positioned in the silver-plated copper piston outer moving contact (3).
3. The dual contact structure air blown SF6 load switch of claim 1, wherein: the quincuncial contact finger type outer fixed contact (9) is of an L-shaped structure.
4. The dual contact structure air blown SF6 load switch of claim 1, wherein: the bottom end of the quincuncial contact finger type outer fixed contact (9) is matched with the inside of the ring groove (4).
5. The dual contact structure air blown SF6 load switch of claim 1, wherein: the top of the nylon guide cap (6) is in a truncated cone-shaped structure.
6. The dual contact structure air blown SF6 load switch of claim 1, wherein: the opposite sides of the two duckbilled inner fixed contacts (10) are of arc-shaped structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321391463.6U CN220121681U (en) | 2023-06-02 | 2023-06-02 | Double-contact structure air-blown SF6 load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321391463.6U CN220121681U (en) | 2023-06-02 | 2023-06-02 | Double-contact structure air-blown SF6 load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220121681U true CN220121681U (en) | 2023-12-01 |
Family
ID=88889478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321391463.6U Active CN220121681U (en) | 2023-06-02 | 2023-06-02 | Double-contact structure air-blown SF6 load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220121681U (en) |
-
2023
- 2023-06-02 CN CN202321391463.6U patent/CN220121681U/en active Active
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| GR01 | Patent grant |