CN208903906U - A kind of electric locomotive earthing switch - Google Patents
A kind of electric locomotive earthing switch Download PDFInfo
- Publication number
- CN208903906U CN208903906U CN201820019890.4U CN201820019890U CN208903906U CN 208903906 U CN208903906 U CN 208903906U CN 201820019890 U CN201820019890 U CN 201820019890U CN 208903906 U CN208903906 U CN 208903906U
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- Prior art keywords
- earthing switch
- arc extinguishing
- extinguishing chamber
- insulating layer
- movable end
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Abstract
The utility model relates to high voltage electric equipment manufacturing technology field, especially a kind of electric locomotive earthing switch, including earthing switch pole, casing, operating mechanism, operating mechanism drive 2 earthing switches simultaneously.There is vacuum interrupter in earthing switch pole, there is pressure sensor on movable end of vacuum arc extinguishing chamber metal-back, it is semiconductive ground plane outside insulating layer that vacuum extinction outdoor, which is insulating layer,.Ground terminal is located above movable end of vacuum arc extinguishing chamber, is connect by being flexible coupling with pull rod and movable end of vacuum arc extinguishing chamber, and be connected with semi-conductive layer.Insulating layer uses epoxy resin or ethylene propylene diene monomer (EPDM) material.The beneficial effects of the utility model are: small in size, partial discharge quantity is small, highly-safe.
Description
Technical field
The present invention relates to high voltage electric equipment manufacturing technology fields, especially railway electrification locomotive earthing switch equipment.
Background technique
With the sustainable development of China's economic, railway transportation plays more and more long-pending in the important means that Chinese transportation transports
The effect of pole, and in following a period of time, Chinese railway construction will enter golden period, as the controller switching equipment of electric railway,
Also with the arrival on railway construction peak, the increasingly vigorous situation of the market demand is faced.The switchgear of railway routine is gas
Insulated metal closed switch equipment, it is larger that there are volumes, has arcing risk, heavier mass is big by external environment influence, using not
Just the problems such as.
Summary of the invention
The technical problem to be solved by the present invention is to using volume is big, safety is insufficient existing for gas isolated earthing switch
The problem of.
To solve the above-mentioned problems, the technical scheme is that a kind of electric locomotive earthing switch, including ground connection are opened
Pole, casing, operating mechanism are closed, earthing switch pole front end is fixed on behind mounting plate, and operating mechanism is being fixed on mounting plate just
Face；Earthing switch pole rear portion is set interface tube, and the plug that casing front end is horizontally oriented, casing rear end is downward plug,
Casing front end plug cooperates in the inner cone structure of male-tapered and the set interface tube of disconnecting switch pole；Have among earthing switch pole
Vacuum interrupter has pressure sensor on movable end of vacuum arc extinguishing chamber metal shell, and vacuum extinction outdoor is insulating layer, insulating layer
Outside is semiconductive ground plane；Pull rod connection operating mechanism is flexible coupling and movable end of vacuum arc extinguishing chamber；It is flexible coupling and connects with ground terminal
It connects；Ground terminal is located at the top of movable end of vacuum arc extinguishing chamber in earthing switch pole, passes through insulating layer and semiconductive ground plane.
Insulating layer uses epoxy resin or ethylene propylene diene monomer (EPDM) material.Semi-conductive layer is with epoxy resin or ethylene propylene diene rubber
For benchmark material, electrically conductive graphite powder is added, after diluent is added, is uniformly mixed；Then it is coated in outside insulating layer and solidifies.It adopts
It uses the disconnecting switch pole of epoxy resin insulation material to cover and needs to increase silicone rubber pad between interface tube and casing plug as buffering
With enhancing sealing performance and insulation performance.
Operating mechanism is grounded by support plate, gear wheel, main shaft, connecting lever, pull rod link block, drive rod, lower supporting plate, small tooth
Wheel composition.Support plate, lower supporting plate are mounted in mechanism's installing plate.When operation, then drive rod driving pinion drives and is equipped with
The main shaft and connecting lever of gear wheel drive pull rod to drive movable end of vacuum arc extinguishing chamber divide-shut brake by pull rod link block.
Operating mechanism drives the synchronous divide-shut brake of two earthing switches simultaneously.In two earthing switches, a connection bus, one
Platform connects breaker outgoing line end.In operation and maintenance, two earthing switches are grounded simultaneously, it is ensured that the safety of operation maintenance personnel.Partly lead
Electric layer is directly connected with ground terminal, realizes bonding function.
The beneficial effects of the present invention are: 1, using vacuum interrupter and solid insulating material, reduce the volume of switch；2,
Pole uses equal casting die and semi-conductive screen ground plane, reduces the partial discharge quantity of product, improves the service life of product；3,
Ground terminal is directly connected with semi-conductive layer, improves bonding reliability.
Detailed description of the invention
Fig. 1 is earthing switch schematic diagram of the present invention；
Fig. 2 is the left view of earthing switch of the present invention.
Drawing reference numeral explanation: 1, earthing switch pole, 2, vacuum interrupter, 3, set interface tube, 4, mounting plate, 5, actuating
Mechanism, 6, pull rod, 7, be flexible coupling, 8, ground terminal, 10, support plate, 11, gear wheel, 12, main shaft, 13, connecting lever, 14, pull rod
Link block, 15, drive rod, 16, lower supporting plate, 17, pinion gear.
Specific embodiment
Technical solution of the present invention is described further with reference to the accompanying drawing.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of electric locomotive earthing switch, including earthing switch pole 1, casing, operating mechanism
5,1 front end of earthing switch pole is fixed on behind mounting plate 4, and operating mechanism 5 is fixed on 4 front of mounting plate；Earthing switch pole 1
Rear portion is set interface tube 3, and the plug that casing front end is horizontally oriented, casing rear end is downward plug, and casing front end plug is in
The inner cone structure of the set interface tube 3 of male-tapered and earthing switch pole cooperates；There is vacuum interrupter 2 among earthing switch pole 1,
There is pressure sensor on movable end of vacuum arc extinguishing chamber metal shell, it is partly to lead outside insulating layer that vacuum extinction outdoor, which is insulating layer,
Electrically grounded layer；The connection of pull rod 6 operating mechanism 5, be flexible coupling 7 and movable end of vacuum arc extinguishing chamber；It is flexible coupling and 7 is connect with ground terminal 8；It connects
Ground terminal 8 is located at the top of movable end of vacuum arc extinguishing chamber in earthing switch pole, passes through semi-conductive layer and insulating layer.
Insulating layer uses epoxy resin or ethylene propylene diene monomer (EPDM) material.Semi-conductive layer is with epoxy resin or ethylene propylene diene rubber
For benchmark material, it is added with electrically conductive graphite powder and diluent；Then solidifying coated in insulating layer outside and solidification or by pressure
Gluing equipment pressure injection.It is covered using the disconnecting switch pole of epoxy resin insulation material and needs to increase silicon rubber between interface tube and casing plug
Rubber mat is as the sealing performance and insulation performance for buffering and enhancing interface.Since ethylene propylene diene monomer (EPDM) material has centainly soft
Property, silicone rubber pad can not had to.
Operating mechanism 5 is grounded by support plate 10, gear wheel 11, main shaft 12, connecting lever 13, pull rod link block 14, drive rod 15,
Lower supporting plate 16, pinion gear 17 form.Support plate 10, lower supporting plate 16 are mounted on mounting plate 4.When operation, drive rod 15 is driven
Then dynamic pinion gear 17 drives bull gear drive, then driving spindle 12 and connecting lever 13 to rotate, passes through the pull rod link block on connecting lever
14 drive pull rod 6 to drive movable end of vacuum arc extinguishing chamber divide-shut brake.There is spring in pull rod, contact pressure when vacuum interrupter closes a floodgate is provided
Power guarantees being reliably connected for vacuum arc-extinguishing chamber contact.
As shown in Figure 1, operating mechanism 1 drives the synchronous divide-shut brake of two earthing switches simultaneously.In two earthing switches, one
Connect bus, a connection breaker outgoing line end.In operation and maintenance, two earthing switches are grounded simultaneously, it is ensured that operation maintenance personnel
Safety.Semi-conductive layer and ground terminal 8 are directly connected, and realize bonding function.
The beneficial effects of the present invention are: small in size, partial discharge quantity is small, highly-safe.
Claims (3)
1. a kind of electric locomotive earthing switch, including earthing switch pole (1), casing, operating mechanism (5), earthing switch pole
Column (1) front end is fixed on mounting plate (4) below, and operating mechanism (5) is fixed on mounting plate (4) front, it is characterised in that: ground connection is opened
Closing pole (1) rear portion is set interface tube (3), and the plug that casing (9) front end is horizontally oriented, casing rear end is downward plug,
Casing front end plug cooperates in male-tapered and the inner cone structure of the set interface tube (3) of earthing switch pole；Earthing switch pole (1)
Centre has vacuum interrupter (2), there is pressure sensor on movable end of vacuum arc extinguishing chamber metal shell, and vacuum extinction outdoor is insulation
Layer, it is semi-conductive layer outside insulating layer；Pull rod (6) connection operating mechanism (5), be flexible coupling (7) and movable end of vacuum arc extinguishing chamber；Soft company
(7) are connect to connect with ground terminal (8)；Ground terminal (8) is located at the top of movable end of vacuum arc extinguishing chamber in earthing switch pole, passes through
Semi-conductive layer and insulating layer.
2. electric locomotive earthing switch as described in claim 1, it is characterised in that: insulating layer uses epoxy resin or ternary second
Third rubber material.
3. electric locomotive earthing switch as described in claim 1, it is characterised in that: operating mechanism (5) include support plate (10),
Gear wheel (11), main shaft (12), main shaft connecting lever (13), pull rod link block (14), drive rod (15), lower supporting plate (16), small tooth
It takes turns (17), support plate (10), lower supporting plate (16) are mounted on mechanism's installing plate (4)；Drive rod (15) driving pinion (17),
Then gear wheel (11) rotation, then driving spindle (12) and main shaft connecting lever (13) rotation are driven, the pull rod on connecting lever (13) is passed through
Link block (14) drives pull rod (6) to drive movable end of vacuum arc extinguishing chamber divide-shut brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820019890.4U CN208903906U (en) | 2018-01-06 | 2018-01-06 | A kind of electric locomotive earthing switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820019890.4U CN208903906U (en) | 2018-01-06 | 2018-01-06 | A kind of electric locomotive earthing switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208903906U true CN208903906U (en) | 2019-05-24 |
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ID=66564917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820019890.4U Active CN208903906U (en) | 2018-01-06 | 2018-01-06 | A kind of electric locomotive earthing switch |
Country Status (1)
| Country | Link |
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| CN (1) | CN208903906U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172447A (en) * | 2018-01-06 | 2018-06-15 | 北海银河开关设备有限公司 | A kind of electric locomotive earthing switch |
-
2018
- 2018-01-06 CN CN201820019890.4U patent/CN208903906U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172447A (en) * | 2018-01-06 | 2018-06-15 | 北海银河开关设备有限公司 | A kind of electric locomotive earthing switch |
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