CN215069712U - Isolation grounding switch with upper isolation stations and ring main unit - Google Patents
Isolation grounding switch with upper isolation stations and ring main unit Download PDFInfo
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- CN215069712U CN215069712U CN202023350649.6U CN202023350649U CN215069712U CN 215069712 U CN215069712 U CN 215069712U CN 202023350649 U CN202023350649 U CN 202023350649U CN 215069712 U CN215069712 U CN 215069712U
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- isolation
- insulating
- vacuum arc
- extinguishing chamber
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Abstract
The utility model provides an on keep apart earthing switch and looped netowrk cabinet of two stations, including insulating housing, go up cable wiring end, lower cable wiring end, ground contact, the return circuit link, vacuum interrupter, first insulation pull rod, electrically conductive connecting piece, keep apart sword and the insulating pull rod of second, ground contact and return circuit link all are located upper portion, vacuum interrupter is located the lower part, first insulation pull rod is connected with vacuum interrupter and drives vacuum interrupter closure or disconnection, keep apart the sword and be located the device cavity and be located vacuum interrupter's top, the fixed end of keeping apart the sword is articulated with first articulated portion, the insulating pull rod of second is connected with the isolation sword, the free end that the insulating pull rod drive of second kept apart the sword is connected with ground contact or return circuit link. After the isolation knife is changed from three stations to two stations in the same space, the reserved insulation space is larger, so that isolation insulation can be better realized, and the manufacturing cost can be reduced.
Description
Technical Field
The utility model relates to a high-voltage electrical equipment field especially relates to an on keep apart earthing switch and looped netowrk cabinet of two stations.
Background
The high-voltage power distribution cabinet is an electrical appliance product which is used for power generation, power transmission, power distribution, electric energy conversion and consumption of a power system and plays roles of on-off, control or protection and the like, and the voltage level is 3.6 kV-550 kV, and mainly comprises a high-voltage circuit breaker, a high-voltage isolating switch, a grounding switch, a high-voltage load switch, a high-voltage automatic reclosing and breaking device, a high-voltage operating mechanism, a high-voltage explosion-proof power distribution device, a high-voltage switch cabinet and the like. The high-voltage switch manufacturing industry is an important component of the power transmission and transformation equipment manufacturing industry and plays a very important role in the whole power industry.
The ring main unit is an important ring in high-voltage electrical equipment, is arranged in a metal or nonmetal insulating cabinet body or is made into electrical equipment of an assembled interval ring main power supply unit, adopts a load switch and a fuse at the core part, and has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like. The transformer substation is widely applied to distribution stations and box-type substations of load centers of urban residential districts, high-rise buildings, large public buildings, factory enterprises and the like.
The existing product is generally a three-position disconnecting switch, namely, the three-position disconnecting switch comprises closing, opening and grounding, but because the lower end of the disconnecting knife is also provided with a breaking point of a breaker, the grounding block easily gives a wrong feeling to people, and therefore misoperation is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an keep apart earthing switch at last two stations of keeping apart.
The second objective of the present invention is to provide a ring main unit with the above-mentioned isolation grounding switch.
In order to realize the first purpose of the utility model, the utility model provides an isolation grounding switch with two upper isolation stations, which comprises an insulating shell, an upper cable wiring end, a lower cable wiring end, a grounding contact, a loop connecting end, a vacuum arc-extinguishing chamber, a first insulating pull rod, a conductive connecting piece, an isolation knife and a second insulating pull rod, wherein the insulating shell is provided with a device cavity, the insulating shell is provided with a bearing platform near the lower part in the device cavity, the upper cable wiring end is the upper part of the insulating shell, the lower cable wiring end is the lower part of the insulating shell, the grounding contact is positioned at the upper part in the device cavity, the loop connecting end is arranged in the device cavity and is positioned near the upper cable wiring end, the loop connecting end is electrically connected with the upper cable wiring end, the vacuum arc-extinguishing chamber is arranged in the device cavity and is positioned near the lower cable wiring end, the first connecting end of the vacuum arc-extinguishing chamber is electrically connected with the lower cable wiring end, the first insulating pull rod is connected with the vacuum arc extinguish chamber and drives the vacuum arc extinguish chamber to be closed or disconnected, the conductive connecting piece is positioned in the device cavity and fixedly arranged on the bearing table, the conductive connecting piece is electrically connected with the second connecting end of the vacuum arc extinguish chamber, the conductive connecting piece is provided with a first hinged part, the isolation knife is positioned in the device cavity and positioned above the vacuum arc extinguish chamber, the fixed end of the isolation knife is hinged with the first hinged part, the second insulating pull rod is connected with the isolation knife, and the second insulating pull rod drives the free end of the isolation knife to be connected with the grounding contact or the loop connecting end.
The isolation knife is further provided with a second hinge part between the free end and the fixed end, and the driving end of the second insulation pull rod is hinged with the second hinge part.
In a further aspect, the ground contact is located above the second insulating pull rod and proximate to the actuated end of the second insulating pull rod.
The bearing table is provided with an upward step surface and a positioning bulge facing to the side part, the conductive connecting piece forms a positioning groove, the positioning groove is matched with the positioning bulge, and the first hinge part is positioned on the step surface.
According to a further scheme, the conductive connecting piece is provided with a conductive connecting end below the positioning protrusion, the vacuum arc-extinguishing chamber is located below the first hinged portion, and the conductive connecting end is electrically connected with the second connecting end of the vacuum arc-extinguishing chamber.
In order to realize the utility model discloses the second purpose, the utility model provides a looped netowrk cabinet, include the isolation earthing switch who like the above-mentioned scheme.
The beneficial effects of the utility model are that, set up by upper end position through ground contact and return circuit link, utilize rotatory isolation sword to carry out the switching of two station combined floodgates and ground connection then, and set up vacuum interrupter and lean on lower extreme position, because vacuum interrupter can be in off-state, can satisfy the electrical property completely during the event ground connection, after isolation sword is connected with ground contact, can realize actual ground connection closing vacuum interrupter, can realize later on and overhaul, compare with old scheme, it changes into two stations backs by three stations in same space to keep apart the sword, the insulating space that leaves is bigger, the insulation of realization isolation that like this can be better, also can reduce manufacturing cost, can satisfy the relevant requirement of ground connection closure ability again.
Drawings
Fig. 1 is a structural diagram of an embodiment of the isolation grounding switch of the present invention.
Fig. 2 is a cross-sectional view of an embodiment of the isolation grounding switch of the present invention.
Fig. 3 is a structural diagram of the isolation grounding switch of the present invention in a closing state.
Fig. 4 is a structural diagram of the isolation earthing switch of the present invention in a closing state.
Fig. 5 is a structural diagram of the embodiment of the isolation grounding switch of the present invention in the isolation opening state.
Fig. 6 is a structural diagram of the embodiment of the isolation grounding switch of the present invention in the grounding conducting state.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Referring to fig. 1 to 2, the ring main unit includes three isolation earthing switches 1 and an elastic operating mechanism arranged side by side, where the three isolation earthing switches 1 are correspondingly connected to three-phase power, and the isolation earthing switch 1 includes an insulating housing 11, an upper cable terminal 12, a lower cable terminal 13, an earthing contact 17, a loop connection terminal 13, a vacuum interrupter 14, a first insulating pull rod 151, a conductive connecting member 18, an isolation knife 16, and a second insulating pull rod 152.
Insulating housing 11 is provided with the device cavity, insulating housing 11 is provided with plummer 111 near the lower part position in the device cavity, go up cable terminal 12 and be the upper portion of insulating housing 11, lower cable terminal 13 is the lower part of insulating housing 11, it all is provided with the wire that extends to get into the device cavity to go up cable terminal 12 and lower cable terminal 13, return circuit link 13 sets up in the device cavity and is located near last cable terminal 12, return circuit link 13 is connected with last cable terminal 12 electricity, vacuum interrupter 14 sets up in the device cavity and is located near lower cable terminal 13, vacuum interrupter 14's first link is connected with lower cable terminal 13 electricity.
The grounding contact 17 is located at the upper part in the device cavity, the grounding contact 17 is located above the second insulating pull rod 152 and close to the driven end of the second insulating pull rod 152, the driven end of the second insulating pull rod 152 is connected with the spring operating mechanism 2, the first insulating pull rod 151 is connected with the vacuum arc-extinguishing chamber 14 and drives the vacuum arc-extinguishing chamber 14 to be closed or opened, the driven end of the first insulating pull rod 151 is connected with the spring operating mechanism 2, and then the spring operating mechanism 2 can drive the first insulating pull rod 151 and the second insulating pull rod 152 to move.
The plummer 111 is provided with an upward step surface and a positioning protrusion facing the side portion, the conductive connecting piece 18 comprises a hinge piece 181 and a positioning connecting piece 182, the hinge piece 181 and the positioning connecting piece 182 are fixed on the step surface through screws, the positioning connecting piece 182 forms a positioning groove, the positioning connecting piece 182 is provided with a conductive connecting end at the lower end of the positioning groove, a first hinge portion is arranged on the hinge piece 181, the vacuum interrupter 14 is positioned below the positioning protrusion and the hinge portion, the conductive connecting end is electrically connected with a second connecting end of the vacuum interrupter 14, the first hinge portion is positioned on the step surface, and the positioning groove is matched with the positioning protrusion.
The isolation knife 16 is provided with a free end 161, a fixed end 162 and a second hinged part 163, the second hinged part 163 is located between the free end and the fixed end, the isolation knife 16 is located in the device cavity and located above the vacuum arc-extinguishing chamber 14, the fixed end 162 of the isolation knife 16 is hinged to the first hinged part, the driving end of the second insulation pull rod 152 is hinged to the second hinged part, and the second insulation pull rod 152 drives the free end of the isolation knife 16 to be connected with the grounding contact 17 or the loop connecting end 13.
Referring to fig. 3, the earthing isolator switch 1 in fig. 3 is in a closed state, that is, the upper cable terminal 12, the circuit connecting terminal 13, the isolating blade 16, the conductive connecting member 18, the vacuum interrupter 14 and the lower cable terminal 13 are connected to form a normal power-on circuit.
Referring to fig. 4, the earthing isolator 1 in fig. 4 is in an open state, and the vacuum interrupter 14 is then opened by driving the first insulating rod 151.
Referring to fig. 5, the disconnecting and grounding switch 1 in fig. 5 is in an isolating and switching-off state, and the free end 161 of the isolating blade 16 is switched from the circuit connection end 13 to the grounding contact 17 by the driving of the second insulating pull rod 151.
Referring to fig. 6, the disconnecting and grounding switch 1 in fig. 6 is in a grounding conducting state, and the vacuum interrupter 14 is closed by driving of the first insulating pull rod 151, so that the grounding main circuit is closed.
It is from top to bottom apparent, be leaning on upper end position through ground contact and return circuit link setting, then utilize rotatory isolation sword to carry out the switching of two station combined floodgates and ground connection, and set up vacuum interrupter and lean on lower extreme position, because vacuum interrupter can be in off-state, so can satisfy the electrical property during ground connection completely, after isolation sword is connected with ground contact, can realize actual ground connection closing vacuum interrupter, can realize later on and overhaul, compare with old scheme, after isolation sword is changed into two stations by three stations in same space, the insulating space that leaves is bigger, the insulation of realization isolation that like this can be better, also can reduce manufacturing cost, can satisfy the relevant requirement of ground connection closed ability again
It is thus clear that, setting up by upper end position through ground contact and return circuit link, utilize rotatory isolation sword to carry out the switching of two station combined floodgates and ground connection then, and set up vacuum interrupter and lean on lower extreme position, because vacuum interrupter can be in off-state, so can satisfy the electrical property during ground connection completely, after isolation sword is connected with ground contact, can realize actual ground connection closing vacuum interrupter, can realize the maintenance afterwards, compare with old scheme, after isolation sword is changed into two stations by three stations in same space, the insulating space that leaves is bigger, the realization that like this can be better keeps apart is insulating, also can reduce manufacturing cost, can satisfy the relevant requirement of ground connection closed ability again.
Claims (6)
1. The utility model provides an on keep apart earthing switch of two stations which characterized in that includes:
the device comprises an insulating shell, a first electrode and a second electrode, wherein the insulating shell is provided with a device cavity, and a bearing table is arranged at the lower part of the insulating shell in the device cavity;
an upper cable termination, the upper cable termination being an upper portion of the insulating housing;
a lower cable termination, the lower cable termination being a lower portion of the insulating housing;
a ground contact located at an upper portion within the device cavity;
a loop connection end disposed within the device cavity and located proximate to the upper cable termination end, the loop connection end being electrically connected to the upper cable termination end;
the vacuum arc-extinguishing chamber is arranged in the device cavity and is positioned close to the lower cable wiring terminal, and a first connecting end of the vacuum arc-extinguishing chamber is electrically connected with the lower cable wiring terminal;
the first insulating pull rod is connected with the vacuum arc-extinguishing chamber and drives the vacuum arc-extinguishing chamber to be closed or opened;
the conductive connecting piece is positioned in the device cavity and fixedly arranged on the bearing table, the conductive connecting piece is electrically connected with the second connecting end of the vacuum arc-extinguishing chamber, and the conductive connecting piece is provided with a first hinged part;
the isolation knife is positioned in the device cavity and above the vacuum arc-extinguishing chamber, and the fixed end of the isolation knife is hinged to the first hinged part;
and the second insulating pull rod is connected with the isolation knife, and drives the free end of the isolation knife to be connected with the grounding contact or the loop connecting end.
2. The isolating grounding switch of claim 1, wherein:
the isolation knife is provided with a second hinge part between the free end and the fixed end, and the driving end of the second insulation pull rod is hinged with the second hinge part.
3. The isolating grounding switch of claim 2, wherein:
the grounding contact is positioned above the second insulating pull rod and close to the driven end of the second insulating pull rod.
4. An isolating grounding switch as in any of claims 1 to 3, wherein:
the plummer is provided with the ascending step face and the location arch towards the lateral part, electrically conductive connecting piece forms positioning groove, positioning groove with the protruding cooperation of location, first articulated portion is located on the step face.
5. The isolating grounding switch of claim 4, wherein:
the conductive connecting piece is arranged below the positioning protrusion, the vacuum arc-extinguishing chamber is positioned below the first hinged part, and the conductive connecting end is electrically connected with the second connecting end of the vacuum arc-extinguishing chamber.
6. Ring main unit, characterized in that it comprises said earthing isolator switch according to any of the previous claims from 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023350649.6U CN215069712U (en) | 2020-12-31 | 2020-12-31 | Isolation grounding switch with upper isolation stations and ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023350649.6U CN215069712U (en) | 2020-12-31 | 2020-12-31 | Isolation grounding switch with upper isolation stations and ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215069712U true CN215069712U (en) | 2021-12-07 |
Family
ID=79224575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023350649.6U Active CN215069712U (en) | 2020-12-31 | 2020-12-31 | Isolation grounding switch with upper isolation stations and ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215069712U (en) |
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2020
- 2020-12-31 CN CN202023350649.6U patent/CN215069712U/en active Active
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