CN211957529U - Bridge type three-station isolating switch and grounding switch combined structure - Google Patents
Bridge type three-station isolating switch and grounding switch combined structure Download PDFInfo
- Publication number
- CN211957529U CN211957529U CN202020460650.5U CN202020460650U CN211957529U CN 211957529 U CN211957529 U CN 211957529U CN 202020460650 U CN202020460650 U CN 202020460650U CN 211957529 U CN211957529 U CN 211957529U
- Authority
- CN
- China
- Prior art keywords
- grounding
- contact
- watchband
- moving contact
- static
- 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.)
- Active
Links
Images
Landscapes
- Electric Clocks (AREA)
Abstract
The utility model provides a bridge type three-station isolating switch and earthing switch integrated configuration belongs to isolator technical field, touches the finger including moving contact insulating pull rod, moving contact, static contact, ground connection conducting rod, ground flange and watchband. The utility model discloses apply to the electrically conductive connection of the inside insulating utmost point post of three-phase solid encapsulation of looped netowrk cubical switchboard that the distribution network used. The utility model can make the moving contact to do two-dimensional reciprocating motion parallel to the axis of the moving contact by the moving contact insulating pull rod after being connected with a corresponding power mechanism, and realizes the functions of sliding conduction and isolation disconnection by matching with the static contact of the outer ring installation watchband contact finger; the grounding conducting rod can do two-dimensional reciprocating motion parallel to the axis of the grounding flange in the grounding flange, and the grounding conducting rod is matched with the grounding flange with the inner ring provided with the watchband contact fingers to realize a sliding conducting function, so that reliable grounding or grounding separation is realized. The utility model discloses there are three kinds of operating condition of three station isolator closure, three station isolator disconnection and three station isolator grounds.
Description
Technical Field
The utility model belongs to the technical field of isolator, especially relate to a bridge type three-station isolator and earthing switch integrated configuration who applies in the looped netowrk cabinet or the block terminal that various distribution networks used.
Background
In the current switch industry, medium voltage switch cabinets are widely applied, in the current market of medium voltage ring main units, there are air insulation ring main units, solid insulation ring main units and SF6 insulation ring main units, and most of the above-mentioned cabinet bodies are all isolation grounding switch combined structures in a rotating shaft style, so that the electric field distribution is uneven, and the partial discharge is large.
Therefore, there is a need in the art for a new solution to solve this problem.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the bridge type three-station isolating switch and grounding switch combined structure is used for solving the technical problems that an isolating grounding switch combined structure in a rotating shaft type is uneven in electric field distribution, large in partial discharge and the like.
A bridge type three-station isolating switch and grounding switch combined structure comprises a moving contact insulating pull rod, a moving contact, a static contact, a grounding conductive rod, a grounding flange, a watchband contact finger A, a watchband contact finger B and a watchband contact finger C,
the number of the static contacts is two, the lower parts of the two static contacts are fixedly connected with a conductive piece respectively, and watchband contact fingers B are fixedly arranged on the outer rings of the static contacts;
the moving contact is of a bridge structure and spans over the two fixed contacts, the upper part of the moving contact is fixedly connected with the lower end of the moving contact insulating pull rod through a bolt, and two ends of the moving contact are provided with downward protruding contacts; the contacts are respectively provided with through holes for the grounding conducting rod to pass through, the through holes are coaxial with the contacts, the center distance of the two through holes is equal to that of the two static contacts, the two through holes respectively do coaxial linear reciprocating motion relative to the two static contacts, and the contacts are connected with the static contacts in a sliding manner through a watchband contact finger B;
the grounding flange is fixedly arranged on the grounding copper bar or the grounding electrode through bolts, and the inner side wall of the grounding flange is fixedly provided with a watchband contact finger C;
the outer side wall of the lower portion of the grounding conductive rod is fixedly provided with a watchband contact finger A, the grounding conductive rod penetrates through a through hole in the contact and then linearly reciprocates coaxially relative to the static contact, the grounding conductive rod is connected with the static contact in a sliding mode through the watchband contact finger A, the outer side of the upper portion of the grounding conductive rod is connected with the grounding flange in a sliding mode through the watchband contact finger C, the grounding conductive rod linearly reciprocates coaxially relative to the grounding flange, and the end head of the upper portion of the grounding conductive rod is provided with a threaded hole connected with a power mechanism.
And the lower part of one static contact is connected with the outgoing line power supply side through a bolt, and the lower part of the other static contact is connected with the power bus side through a bolt.
The insulating pull rod of moving contact has the insulating material stick of metal mounting for inside having inlayed, the moving contact is the bridge structure, and the both ends round hole centre-to-centre spacing of moving contact equals with the centre-to-centre spacing of two static contacts.
The moving contact, the fixed contact, the grounding conducting rod, the grounding flange, the watchband contact finger A, the watchband contact finger B and the watchband contact finger C are all conductive parts.
The cross section of the contact of the moving contact is circular.
The cross section of the static contact is circular.
Through the above design scheme, the utility model discloses following beneficial effect can be brought:
the utility model discloses apply to the electrically conductive connection of the inside insulating utmost point post of three-phase solid encapsulation of looped netowrk cubical switchboard that the distribution network used. One end of a moving contact insulating pull rod is arranged on the upper part of the moving contact by a bolt, and the other end of the moving contact insulating pull rod is connected to a power mechanism by the bolt, so that the moving contact is driven by the moving contact insulating pull rod to perform two-dimensional reciprocating motion parallel to the axis of the moving contact, and the moving contact insulating pull rod is matched with a static contact of a watchband contact finger arranged on an outer ring to realize the functions of sliding conduction and; one end of the grounding conducting rod provided with the watchband contact finger penetrates through the moving contact and then is matched with the fixed contact on the outgoing line side, and the other end of the grounding conducting rod is connected to the power mechanism through the bolt, so that the grounding conducting rod can do two-dimensional reciprocating motion parallel to the axis of the grounding flange in the grounding flange and is matched with the grounding flange provided with the watchband contact finger on the inner ring to realize the sliding conducting function, and reliable grounding or grounding separation is realized.
Parallel contact points are established between two surfaces which are contacted through sliding contact between a moving contact and a fixed contact, between a grounding conductive rod and the fixed contact and between the grounding conductive rod and a grounding flange, and each contact blade forms an independent elastic load current-carrying bridge, so that the whole contact resistance can be greatly reduced, the electric field distribution is more uniform due to the circular contact design, and the effect of partial discharge is reduced.
The utility model discloses can have three station isolator closed, three station isolator disconnection and three kinds of operating condition of three station isolator grounds under the power unit drive that its cooperation was used.
Drawings
The invention is further described with reference to the following drawings and detailed description:
fig. 1 is a schematic structural view of a closed state of a three-position disconnecting switch in a bridge type three-position disconnecting switch and grounding switch combined structure of the present invention;
fig. 2 is a schematic structural diagram of a three-position disconnecting switch in a bridge type three-position disconnecting switch and grounding switch combined structure of the present invention in an off state;
fig. 3 is the utility model relates to a three station isolator earthing state's among three station isolator of bridge type and earthing switch integrated configuration structural schematic.
In the figure, 1-moving contact insulating pull rod, 2-moving contact, 3-static contact, 4-grounding conducting rod, 5-grounding flange, 6-watchband contact finger A, 7-watchband contact finger B, 8-watchband contact finger C, 9-conducting piece.
Detailed Description
As shown in the figure, the bridge type three-station isolating switch and grounding switch combined structure comprises a moving contact insulating pull rod 1, a moving contact 2, a static contact 3, a grounding conductive rod 4, a grounding flange 5, a watchband contact finger A6, a watchband contact finger B7 and a watchband contact finger C8,
the number of the static contacts 3 is two, the watchband contact finger B7 is installed on the outer ring of the static contact 3, the watchband contact finger A6 is installed on the outer ring of one side of the grounding conducting rod 4 matched with the static contact 3, the watchband contact finger C8 is installed on the inner ring of the grounding flange 5, the lower parts of the two static contacts 3 are respectively and fixedly connected with a conductive piece 9, the conductive pieces 9 are respectively an outgoing power supply and a power supply bus, one static contact 3 is connected with the outgoing power supply side by a bolt, and the other static contact 3 is connected with the power supply bus side by a bolt according to the distance between two;
the moving contact 2 is of a bridge structure, the moving contact 2 stretches across the upper parts of the two static contacts 3, the center distance between the circular holes at the two ends of the moving contact 2 is equal to that of the two static contacts 3, the circular holes at the two ends of the moving contact 2 do coaxial linear reciprocating motion relative to the two static contacts 3 respectively, and the sliding contact between the moving contact 2 and the contacts of the two static contacts 3 is realized through a watchband contact finger B7 arranged on the outer ring of the static contact 3. The middle part or other parts of the upper surface of the moving contact 2 are fixedly connected with the lower part of the moving contact insulating pull rod 1 through bolts, and through holes for the grounding conducting rod 4 to pass through are arranged at the two ends of the moving contact 2; the grounding conducting rod 4 passes through the through hole on the moving contact 2 and then linearly reciprocates coaxially with the static contact 3, and the sliding contact with the static contact 3 is realized through a watchband contact finger A6 arranged on the outer ring at the lower part of the grounding conducting rod 4. The outer side of the upper part of the grounding conducting rod 4 is sleeved with a grounding flange 5, the grounding flange 5 is installed on a grounding copper bar or a grounding electrode through a bolt, the end head of the upper part of the grounding conducting rod 4 is provided with a threaded hole connected with a power mechanism, the grounding conducting rod 4 and the grounding flange 5 do coaxial linear reciprocating motion, and the sliding contact between the grounding conducting rod 4 and the grounding flange 5 is realized through a watchband contact finger C8 installed on the inner ring of the grounding flange 5; the upper end of the moving contact insulating pull rod 1 is provided with a threaded hole connected with a power mechanism; the grounding flange 4 is arranged on the grounding copper bar or the grounding electrode through bolts; the watchband contact finger 6 is a conductive part which is formed by stamping a beryllium bronze plate into a watchband shape, provides contact pressure through elastic deformation of a contact sheet and has high conductivity, and is widely applied to sliding contact in the middle of a main conductive circuit in switch equipment; the band finger a6 and the band finger B7 are mounted by the groove design on the contact surface, and the band finger C8 is mounted by the groove design on the inner ring of the grounding flange. Parallel contact points are established between two contact surfaces through sliding contact between the moving contact 2 and the fixed contact 3, between the grounding conductive rod 4 and the fixed contact 3 and between the grounding conductive rod 4 and the grounding flange 5, and each contact blade forms an independent elastic load current-carrying bridge, so that the whole contact resistance can be greatly reduced, the electric field distribution is more uniform due to the design form of the circular contact, and the effect of partial discharge is reduced.
Of the two static contacts 3, the lower part of one static contact 3 is connected with the outgoing line power supply side through a bolt, the lower part of the other static contact 3 is connected with the power supply bus side through a bolt, and the outer ring of the static contact 3 is provided with a watchband contact finger B7.
The moving contact insulating pull rod 1 is an insulating material rod embedded with a metal fixing piece.
The moving contact 2 is made of conductive metal.
The static contact 3 is made of conductive metal.
The grounding conducting rod 4 is made of conducting metal, and a watchband contact finger A6 is installed on the outer ring.
The grounding flange 5 is made of conductive metal, and a watchband contact finger C8 is installed inside the grounding flange.
The band finger a6, band finger B7, and band finger C8 are conductive parts having high conductivity, which are formed in the shape of a band punched out of a beryllium bronze plate, and which provide contact pressure by elastic deformation of contact leaves.
One end of a moving contact insulating pull rod 1 is connected with a moving contact 2 by a bolt and is arranged on the upper part of the moving contact 2, and the other end of the moving contact insulating pull rod is connected with a power mechanism by a bolt so as to enable the moving contact insulating pull rod to do two-dimensional reciprocating motion parallel to the axis of the moving contact 2;
the outer ring of one side of the grounding conducting rod 4, which is sleeved on the moving contact 2, is provided with a watchband contact finger A6 matched with the static contact 3 at the wire inlet side, and the other end of the grounding conducting rod is connected to a power mechanism by using a bolt, so that the grounding conducting rod can do two-dimensional reciprocating motion parallel to the axis of the grounding flange 5 in the grounding flange 5;
a watchband contact finger C8 is installed on the inner ring of the grounding flange 5 and is installed on a grounding copper bar or a grounding electrode by using a bolt, so that the outgoing line power supply side can be safely grounded in a non-power state.
The utility model relates to a three station isolator of bridge type and earthing switch integrated configuration are at the state of during operation:
when the isolating switch is closed, a connecting point on the side of the power mechanism pushes a movable outlet insulating pull rod of the isolating switch to connect a movable contact 2 with a fixed contact 3, so that the current conducting effect is achieved; at the moment, the grounding conducting rod 4 is pulled by the power mechanism to separate the contact of the grounding conducting rod 4 from the static contact 3, and the grounding switch is disconnected;
when the isolating switch is disconnected, a connecting point on the power mechanism side pulls a moving contact insulating pull rod 1 on the isolating switch to separate a moving contact 2 from a static contact 3, so that the current is disconnected; at the moment, the grounding conducting rod 4 is pulled by the power mechanism to separate the contact of the grounding conducting rod 4 from the static contact 3, and the grounding switch is disconnected;
when the isolating switch is disconnected, a connecting point on the power mechanism side pulls a moving contact insulating pull rod 1 on the isolating switch to separate a moving contact 2 from a static contact 3, so that the current is disconnected; at the moment, the grounding conducting rod 4 is pushed by the power mechanism to close the contact of the grounding conducting rod 4 and the static contact 3, and the grounding switch is closed, so that the inspection can be safely carried out.
Claims (6)
1. The utility model provides a bridge type three-station isolating switch and earthing switch integrated configuration which characterized by: comprises a moving contact insulating pull rod (1), a moving contact (2), a fixed contact (3), a grounding conducting rod (4), a grounding flange (5), a watchband contact finger A (6), a watchband contact finger B (7) and a watchband contact finger C (8),
the number of the static contacts (3) is two, the lower parts of the two static contacts (3) are respectively and fixedly connected with a conductive piece (9), and watchband contact fingers B (7) are fixedly arranged on the outer rings of the static contacts (3);
the moving contact (2) is of a bridge structure, the moving contact (2) stretches over the two fixed contacts (3), the upper part of the moving contact (2) is fixedly connected with the lower end of the moving contact insulating pull rod (1) through a bolt, and two ends of the moving contact (2) are provided with downward protruding contacts; the contacts are respectively provided with through holes for the grounding conducting rod (4) to pass through, the through holes are coaxial with the contacts, the center distance of the two through holes is equal to the center distance of the two static contacts (3), the two through holes respectively do coaxial linear reciprocating motion relative to the two static contacts (3), and the contacts are in sliding connection with the static contacts (3) through watchband contact fingers B (7);
the grounding flange (5) is fixedly arranged on the grounding copper bar or the grounding electrode through bolts, and the inner side wall of the grounding flange (5) is fixedly provided with a watchband contact finger C (8);
the outer side wall of the lower portion of the grounding conductive rod (4) is fixedly provided with a watchband contact finger A (6), the grounding conductive rod (4) penetrates through a through hole in the contact and then makes coaxial linear reciprocating motion relative to the static contact (3), the grounding conductive rod (4) makes coaxial linear reciprocating motion with the static contact (3) through the watchband contact finger A (6), the outer side of the upper portion of the grounding conductive rod (4) makes coaxial linear reciprocating motion relative to the grounding flange (5) through a watchband contact finger C (8), and the end of the upper portion of the grounding conductive rod (4) is provided with a threaded hole connected with a power mechanism.
2. The combined structure of the bridge type three-position isolating switch and the grounding switch as claimed in claim 1, wherein: of the two static contacts (3), the lower part of one static contact (3) is connected with the outgoing line power supply side through a bolt, and the lower part of the other static contact (3) is connected with the power supply bus side through a bolt.
3. The combined structure of the bridge type three-position isolating switch and the grounding switch as claimed in claim 1, wherein: the moving contact insulating pull rod (1) is an insulating material rod embedded with a metal fixing part, and the center distance of round holes at two ends of the moving contact (2) is equal to that of the two static contacts (3).
4. The combined structure of the bridge type three-position isolating switch and the grounding switch as claimed in claim 1, wherein: the moving contact (2), the static contact (3), the grounding conducting rod (4), the grounding flange (5), the watchband contact finger A (6), the watchband contact finger B (7) and the watchband contact finger C (8) are all conductive parts.
5. The combined structure of the bridge type three-position isolating switch and the grounding switch as claimed in claim 1, wherein: the cross section of the contact of the moving contact (2) is circular.
6. The combined structure of the bridge type three-position isolating switch and the grounding switch as claimed in claim 1, wherein: the cross section of the static contact (3) is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020460650.5U CN211957529U (en) | 2020-04-02 | 2020-04-02 | Bridge type three-station isolating switch and grounding switch combined structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020460650.5U CN211957529U (en) | 2020-04-02 | 2020-04-02 | Bridge type three-station isolating switch and grounding switch combined structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211957529U true CN211957529U (en) | 2020-11-17 |
Family
ID=73168344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020460650.5U Active CN211957529U (en) | 2020-04-02 | 2020-04-02 | Bridge type three-station isolating switch and grounding switch combined structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211957529U (en) |
-
2020
- 2020-04-02 CN CN202020460650.5U patent/CN211957529U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205230913U (en) | Three -position isolation grounding switch | |
| CN111312553A (en) | Bridge type three-station isolating switch and grounding switch combined structure | |
| CN113258494A (en) | Sliding plug-in type solid insulation switch module | |
| CN211957529U (en) | Bridge type three-station isolating switch and grounding switch combined structure | |
| CN107703339B (en) | Electricity taking device | |
| CN202502937U (en) | Vacuum switch module for ring network unit | |
| CN203491172U (en) | Conductive arm structure of high voltage disconnector | |
| CN209217565U (en) | A kind of insulated switching installation | |
| CN201274252Y (en) | DC ultra-high-voltage isolation switch | |
| CN213042831U (en) | Bipolar heavy current isolator | |
| CN109461553B (en) | GIS equipment and lightning arrester thereof | |
| CN109687336B (en) | Inflatable high-voltage switch gas tank | |
| CN203312136U (en) | Heavy-current three-position double-fracture disconnecting switch | |
| CN214956591U (en) | Bipolar electric isolating switch | |
| CN105869942A (en) | Three-position isolation switch for switch cabinet | |
| CN218102172U (en) | Disconnect-type overvoltage protector structure | |
| CN201210461Y (en) | 35kV outdoor AC high isolating switch | |
| CN213905223U (en) | Special isolating switch for voltage transformer | |
| CN211508395U (en) | Gas insulation switch cabinet | |
| CN215377304U (en) | Three-station isolation grounding switch with optimized field intensity | |
| CN216564255U (en) | Environment-friendly gas-insulated metal-enclosed high-voltage switch equipment | |
| CN211238076U (en) | High-voltage isolating switch assembly | |
| CN108766831B (en) | High-voltage isolation vacuum circuit breaker solid-sealed pole | |
| CN202471765U (en) | Connecting structure of GIS (gas insulated switchgear) test device | |
| CN220306152U (en) | Three-station load switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |