CN217545391U - Solid insulation grounding device for locomotive - Google Patents
Solid insulation grounding device for locomotive Download PDFInfo
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- CN217545391U CN217545391U CN202221403017.8U CN202221403017U CN217545391U CN 217545391 U CN217545391 U CN 217545391U CN 202221403017 U CN202221403017 U CN 202221403017U CN 217545391 U CN217545391 U CN 217545391U
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- circuit breaker
- grounding
- insulating shell
- grounding device
- power supply
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Abstract
The utility model belongs to the technical field of rail transit power supply, and discloses a solid insulation grounding device for a locomotive, which aims to solve the technical problems existing in the prior art that power supply equipment adopts air insulation, and comprises a grounding device, wherein both sides of the grounding device are connected with a circuit breaker device, and the grounding device and the circuit breaker device are connected through a first spring contact finger; the utility model discloses an install mainly in 27.5kV switching station, can satisfy two way vacuum circuit breaker power supply schemes, ensure track traffic's power supply reliability, undertake power supply load, break fault current effect simultaneously. The utility model discloses a design that is main insulating medium with solid insulating material has realized main characteristics such as power supply unit's full insulation, totally enclosed, modularization, miniaturization, can realize non-maintaining simultaneously. The device has the characteristic of full sealing, so that the device has strong capability of resisting severe environment, can be used in severe environments such as severe cold, plateau, moist, strong sand wind and the like, and can be more suitable for the characteristic of complex rail transit in China.
Description
Technical Field
The utility model relates to a rail transit power supply technical field, concretely relates to solid insulation earthing device for locomotive.
Background
At present, 27.5kV rail transit power supply equipment mainly adopts air insulation, and an air insulation switch has the advantages of large equipment floor space, heavy weight, great environmental influence and influence on the safety performance of a rail transit power supply system. Meanwhile, air insulation also requires that power supply equipment needs to be cleaned and maintained regularly, a large amount of resources are wasted, and the technical problems cannot be solved in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problem that prior art power supply unit exists in adopting the air insulation, a solid insulation earthing device for locomotive that suitability is strong is provided.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a solid insulation earthing device for locomotive, characterized by: the grounding device and the circuit breaker device are connected through a first spring contact finger;
the circuit breaker device comprises a circuit breaker insulating shell, wherein a wire inlet sleeve is arranged on the inner side of one end of the circuit breaker insulating shell, a vacuum circuit breaker and an insulating pull rod are arranged in the circuit breaker insulating shell, the vacuum circuit breaker is connected with the insulating pull rod, and the end part of the insulating pull rod extends out of the circuit breaker insulating shell and then is connected with a crank arm;
the grounding device comprises a grounding insulating shell, one end of the grounding insulating shell is connected with an outgoing line sleeve, a conducting rod is arranged in the grounding insulating shell, one end of the conducting rod is provided with a second spring contact finger, the other end of the conducting rod is provided with a third spring contact finger, the conducting rod is connected with a lead screw close to the second spring contact finger, one side, away from the conducting rod, of the lead screw is provided with a fourth spring contact finger, and the end portion of the lead screw is provided with a power mechanism capable of rotating the lead screw.
Further, the insulating shell of the circuit breaker is connected with the insulating shell of the grounding in a conical insertion mode.
Furthermore, a first silica gel sleeve is arranged at the joint of the circuit breaker insulating shell and the grounding insulating shell.
Furthermore, the outgoing line sleeve is connected with the grounding insulating shell in a conical insertion mode, and a second silica gel sleeve is installed at the connection position.
Furthermore, a temperature sensor is arranged on the first spring contact finger.
Further, the power mechanism is a gear box.
Further, the conducting rod is in threaded connection with the lead screw.
Compared with the prior art, the utility model, following beneficial effect has:
the utility model discloses an install mainly in 27.5kV switching station, can satisfy two way vacuum circuit breaker power supply schemes, ensure track traffic's power supply reliability, undertake power supply load, break fault current effect simultaneously.
The utility model discloses a with the design of solid insulating material as main insulating medium, realized main characteristics such as power supply unit's full insulation, full-sealed, modularization, miniaturization, can realize non-maintaining simultaneously. The device is fully sealed, so that the device has strong capability of resisting severe environment, can be used in severe environments such as severe cold, plateau, moist, strong sand wind and the like, and can be more suitable for the characteristic of complex rail transit in China.
The utility model discloses an inlet wire sleeve pipe adopts the conventional cover boots assembly of being convenient for of C type sleeve pipe of european standard, and mainly used introduces the switching station with overhead line power. The vacuum circuit breaker is used for carrying on and off of load and on and off of short-circuit fault. The insulating pull rod is used for connecting the vacuum arc-extinguishing chamber and the circuit breaker, and meanwhile, a contact spring is arranged in the insulating pull rod, so that the contact pressure when the vacuum arc-extinguishing chamber is disconnected is ensured. The crank arm is used for driving the insulating pull rod to move up and down to realize the opening and closing of the vacuum circuit breaker. The first spring contact finger is used for conducting current between the circuit breaker device and the grounding device, and the temperature sensor is arranged in the first spring contact finger and used for monitoring the change condition of contact temperature and uploading data to the platform in real time.
The utility model discloses a circuit breaker device and earthing device are to inserting the conical head, and the cavity adopts the toper design, and the equipment of being convenient for strengthens insulating nature simultaneously, guarantees the insulating sealed when circuit breaker device and earthing device install.
The utility model discloses a rotation of lead screw realizes the up-and-down motion of conducting rod, realizes earthing device's isolation combined floodgate, earthing state.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view of fig. 1.
The reference numerals have the following meanings: 1. a wire inlet sleeve; 2. a vacuum circuit breaker; 3. an insulating pull rod; 4. a crank arm; 5. a first spring contact finger; 6. a first silica gel sleeve; 7. a gear case; 8. a fourth spring contact finger; 9. a lead screw; 10. a second spring finger; 11. a conductive rod; 12. a grounded insulating housing; 13. a second silica gel sleeve; 14. a third spring contact finger; 15. and (4) an outgoing line sleeve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in fig. 1-2, a solid insulation grounding device for a locomotive includes a grounding device, wherein circuit breaker devices are connected to two sides of the grounding device, the grounding device and the circuit breaker devices are connected through a conductive isolation contact base and a first spring contact finger 5, and a temperature sensor is installed on the first spring contact finger 5.
The circuit breaker device comprises a circuit breaker insulating shell, wherein a wire inlet sleeve 1 is arranged on the inner side of one end of the circuit breaker insulating shell, the wire inlet sleeve 1 adopts an European-standard C-shaped sleeve, a vacuum circuit breaker 2 and an insulating pull rod 3 are arranged in the circuit breaker insulating shell, the vacuum circuit breaker 2 is connected with the insulating pull rod 3, and a crank arm 4 is connected to the end part of the insulating pull rod 3 after extending out of the circuit breaker insulating shell.
Earthing device includes ground connection insulating housing 12, ground connection insulating housing 12 middle part is equipped with electrically conductive isolation and touches the seat, the one end of ground connection insulating housing 12 is connected with wire sleeve 15, conducting rod 11 is equipped with in the ground connection insulating housing 12, the one end of conducting rod is equipped with the second spring and touches and indicate 10, the other end of conducting rod 11 is equipped with the third spring and touches and indicate 14, conducting rod 11 is close to second spring and touches and indicate 10 threaded connection of department have lead screw 9, lead screw 9 keeps away from one side of conducting rod 11 and is equipped with the fourth spring and touches and indicates 8, the tip of lead screw 9 is equipped with and supplies lead screw 9 pivoted power unit, power unit is gear box 7.
The circuit breaker insulating shell and the grounding insulating shell 12 both adopt a column mechanism, the circuit breaker insulating shell and the grounding insulating shell 12 are connected in a conical insertion mode and are fastened by adopting internal threads, a first silica gel sleeve 6 is arranged at the joint of the circuit breaker insulating shell and the grounding insulating shell 12, a wire outlet sleeve 15 and the grounding insulating shell 12 are connected in a conical insertion mode, and a second silica gel sleeve 13 is arranged at the joint.
The utility model discloses when conducting rod 11 realized that the fourth spring touches the intercommunication that indicates 8 and spring touch, for ground connection combined floodgate state, the solid insulated cabinet realized the ground connection this moment, can overhaul and maintain the solid insulated cabinet. When the 14 spring contact fingers and the second spring contact finger 10 are communicated through the conductive rod 11, the isolation switching-on state is realized, at the moment, the switch enters a live-line operation state, and the interlocking of the solid insulation cabinet is in a protection state. The outgoing line sleeve 15 is mainly used for connecting an outgoing line cable, and the outgoing line sleeve 15 adopts a C-shaped sleeve of European standard so as to facilitate the assembly of a conventional boot and can be connected with a PT and a lightning arrester in a T-shaped manner.
The utility model discloses design interlocking piece (prior art) between two circuit breakers can realize that two circuit breakers can not close a floodgate simultaneously. And in the process of closing and power transmission, the two circuit breakers are determined to be in an opening state, the gear box 7 drives the lead screw 9 to rotate, the conductive rod 11 is driven to move upwards, and closing of the isolating switch is realized. The turning arm 4 is rotatory, realizes the upward movement of insulating pull rod 3, realizes vacuum circuit breaker 2's combined floodgate, accomplishes the power supply of one side circuit breaker this moment, and the opposite side circuit breaker can't operate under the effect of interlock spare this moment, when one side circuit breaker power supply broke down, with one side circuit breaker separating brake, the opposite side circuit breaker is combined floodgate, continues to supply power to equipment through the opposite side circuit breaker.
In the maintenance process, the two circuit breakers are switched off, the gear box 7 and the driving lead screw 9 rotate reversely to drive the conducting rod 11 to move downwards, the outgoing line loops on the left side and the right side are grounded, the two circuit breakers are switched on simultaneously at the moment, the whole cabinet is grounded, and the switch cabinet can be maintained at the moment.
Claims (8)
1. The utility model provides a solid insulation earthing device for locomotive, characterized by: the grounding device is connected with the circuit breaker device on two sides, and the grounding device and the circuit breaker device are connected through a first spring contact finger (5);
the circuit breaker device comprises a circuit breaker insulating shell, wherein a wire inlet sleeve (1) is arranged on the inner side of one end of the circuit breaker insulating shell, a vacuum circuit breaker (2) and an insulating pull rod (3) are arranged in the circuit breaker insulating shell, the vacuum circuit breaker (2) is connected with the insulating pull rod (3), and the end part of the insulating pull rod (3) extends out of the circuit breaker insulating shell and is connected with a crank arm (4);
the grounding device comprises a grounding insulating shell (12), one end of the grounding insulating shell (12) is connected with a wire outlet sleeve (15), a conducting rod (11) is arranged in the grounding insulating shell (12), one end of the conducting rod is provided with a second spring contact finger (10), the other end of the conducting rod (11) is provided with a third spring contact finger (14), the conducting rod (11) is close to the second spring contact finger (10) and is connected with a lead screw (9), one side, away from the conducting rod (11), of the lead screw (9) is provided with a fourth spring contact finger (8), and the end of the lead screw (9) is provided with a power mechanism capable of rotating the lead screw (9).
2. The solid insulation grounding device for the locomotive according to claim 1, wherein: the breaker insulating shell and the grounding insulating shell (12) are connected in a conical plug-in mode.
3. The solid insulation grounding device for the locomotive according to claim 2, wherein: and a first silica gel sleeve (6) is arranged at the joint of the circuit breaker insulating shell and the grounding insulating shell (12).
4. The solid insulation grounding device for the locomotive according to claim 3, wherein: the outgoing line sleeve (15) is connected with the grounding insulating shell (12) in a conical insertion mode, and a second silica gel sleeve (13) is installed at the connection position.
5. The solid insulation grounding device for the locomotive according to claim 1 or 3, wherein: and a temperature sensor is arranged on the first spring contact finger (5).
6. The solid insulation grounding device for the locomotive according to claim 5, wherein: the power mechanism is a gear box (7).
7. The solid insulation grounding device for the locomotive according to claim 1, wherein: the conducting rod (11) is in threaded connection with the lead screw (9).
8. The solid insulation grounding device for the locomotive according to claim 1, wherein: the circuit breaker insulating shell and the grounding insulating shell (12) both adopt column-shaped mechanisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221403017.8U CN217545391U (en) | 2022-06-07 | 2022-06-07 | Solid insulation grounding device for locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221403017.8U CN217545391U (en) | 2022-06-07 | 2022-06-07 | Solid insulation grounding device for locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217545391U true CN217545391U (en) | 2022-10-04 |
Family
ID=83443178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221403017.8U Active CN217545391U (en) | 2022-06-07 | 2022-06-07 | Solid insulation grounding device for locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217545391U (en) |
-
2022
- 2022-06-07 CN CN202221403017.8U patent/CN217545391U/en active Active
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