CN209948133U - Special grounding wire for centrally installed switchgear - Google Patents
Special grounding wire for centrally installed switchgear Download PDFInfo
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- CN209948133U CN209948133U CN201921204531.7U CN201921204531U CN209948133U CN 209948133 U CN209948133 U CN 209948133U CN 201921204531 U CN201921204531 U CN 201921204531U CN 209948133 U CN209948133 U CN 209948133U
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Abstract
The application provides a special grounding wire for a centrally installed switchgear, which comprises a grounding end, an equipment connecting end and a connecting wire for connecting the grounding end and the equipment connecting end; the equipment connecting end comprises a supporting frame, a conductive contact finger group and a fastening spring; the support frame comprises a first fixing plate, a second fixing plate and a fixing bolt; through holes with the same diameter are arranged at the corresponding positions of the first fixing plate and the second fixing plate; a plurality of finger touch clamping grooves are formed in the periphery of the first fixing plate and the periphery of the second fixing plate; the conductive contact finger group is detachably clamped in the contact finger clamping groove; the number of the conductive contact finger groups is 5; one side of 5 electrically conductive finger groups, which is far away from the through hole, is sleeved with at least one circle of fastening spring. The beneficial effect of this application: when the middle-placed cabinet is overhauled, the grounding end is fixed with the grounding strip or the grounding body, and the equipment connecting end is directly sleeved outside the fixed contact of the middle-placed cabinet, so that the personal safety of an overhaul worker can be effectively guaranteed.
Description
Technical Field
The application relates to the technical field of electric power tools, in particular to a special grounding wire for a centrally installed switchgear.
Background
The centrally installed switchgear equipment is widely applied to 10kV and 35kV voltage level transformers and power distribution networks, and has the main functions of switching on and off, controlling and protecting the equipment such as lines, capacitors and station transformers. With the development of social economy, the load of a power grid is continuously increased, the number of the middle-placed cabinets is increased year by year, and accordingly heavy middle-placed cabinet overhauling and maintaining work is generated. When the centrally installed switchgear is overhauled, in order to ensure personal safety, a ground wire needs to be hung or a grounding knife switch needs to be closed at a working place. When the defects of a 10kV bus and the defects of a static contact in the middle-placed cabinet are processed, the middle-placed cabinet has no bus grounding disconnecting link and can work only by hanging a temporary ground wire. However, when the conventional grounding wire is used, the grounding wire clamp is clamped on the busbar connected with the static contact, and the 10kv busbar has more layers and thicker thickness, so that the clamping is difficult or even impossible; the 10kv busbar is provided with a plurality of insulating sheaths, the insulating sheaths need to be opened or even cut before the ground wire is hooked, and the insulating sheaths need to be recovered after the ground wire is removed, so that time and labor are wasted. Therefore, it is urgently needed to design a grounding wire special for the centrally installed switchgear, which is not required to be in contact with the busbar but is directly in contact with the fixed contact of the centrally installed switchgear.
Disclosure of Invention
The purpose of this application is to above problem, provides the special earth connection of centrally installed switchgear.
The application provides a special grounding wire for a centrally installed switchgear, which comprises a grounding end, an equipment connecting end and a connecting wire for connecting the grounding end and the equipment connecting end; the equipment connecting end comprises a supporting frame, a conductive contact finger group and a fastening spring; the supporting frame comprises a first fixing plate and a second fixing plate which are arranged in parallel; a fixing bolt is arranged between the first fixing plate and the second fixing plate; through holes with the same diameter are arranged at the corresponding positions of the first fixing plate and the second fixing plate; a plurality of finger touch clamping grooves are formed in the periphery of the first fixing plate and the periphery of the second fixing plate; the conductive contact finger group is detachably clamped in the contact finger clamping groove; the number of the conductive contact finger groups is 5; at least one circle of fastening spring is sleeved on one side of each of the 5 conductive contact finger groups, which is far away from the through hole; the conductive contact finger group comprises 2 two conductive contact fingers which are arranged in parallel; the conductive contact finger is provided with an arc-shaped first bulge part at one side close to the through hole. By adopting the technical scheme, when the middle-placed cabinet is overhauled, the grounding end is fixed with the grounding sheet bar or the grounding body, and the equipment connecting end is directly sleeved outside the fixed contact of the middle-placed cabinet, so that the personal safety of an overhaul worker can be effectively ensured; the conductive contact fingers of the equipment connecting end are directly contacted with the fixed contact of the centrally-mounted cabinet by arranging the equipment connecting end, so that the influence of the number and thickness of the bus bars is avoided, and the insulating sheath of the bus bars does not need to be removed; through setting up fastening spring and first bellying, can prevent to lead electrically conductive touching to indicate and drop, provide the clamp force simultaneously and make equipment link and put cabinet static contact effective connection in.
According to the technical scheme provided by some embodiments of the application, at least one groove is arranged on one side of the conductive contact finger away from the through hole; the fastening spring is clamped in the groove.
According to the technical scheme provided by some embodiments of the application, the special grounding wire for the centrally installed switchgear further comprises an insulating operating rod; an equipment connecting end base is arranged on the insulating operating rod; the equipment connecting end is arranged on the equipment connecting end base; a first wiring bolt is arranged on the outer side wall of the equipment connecting end base; one end of the connecting wire, which is far away from the grounding end, is connected with the first connecting bolt.
According to the technical scheme provided by some embodiments of the application, the equipment connecting end base is in a hollow cylindrical shape; an annular groove is formed in one side, close to the equipment connecting end, of the equipment connecting end base; the conductive contact finger is also provided with a second bulge part at one side close to the through hole; the second bulge is clamped in the annular groove.
According to the technical scheme provided by some embodiments of the application, an electricity testing device is arranged between the equipment connecting end base and the insulating operating rod; the electroscope comprises an electroscope and a metal probe; the electroscope is fixed on the top of the insulating operating rod; the metal probe is arranged at the top of the electroscope; the metal probe is electrically connected with an electroscope; an electricity testing spring is sleeved on the metal probe; the electroscopic spring extends to the outside of the equipment connecting end.
According to some embodiments of the present disclosure, a ground terminal includes a U-shaped clamp; the U-shaped clamp comprises a first fixing arm, a second fixing arm and a connecting arm for connecting the first fixing arm and the second fixing arm; a second wiring bolt is arranged on the connecting arm; one end of the connecting wire, which is far away from the equipment connecting end, is connected with the second connecting bolt; a clamping piece is arranged in the opening of the U-shaped clamping head; the clamping piece is arranged in parallel with the first fixing arm; a pushing screw is arranged on one side of the clamping sheet away from the first fixing arm; the pushing screw rod penetrates through the second fixing arm and is in threaded connection with the second fixing arm so as to adjust the distance between the first fixing arm and the clamping piece; a screwing rod is arranged on one side of the propelling screw rod, which is far away from the clamping piece; the pushing screw rod is perpendicular to the tightening rod.
According to the technical scheme provided by some embodiments of the application, the first fixing arm is provided with a fixing groove at one side close to the clamping piece.
According to the technical scheme provided by some embodiments of the application, the connecting wire is formed by twisting a plurality of strands of copper wires; the outside of connecting wire is wrapped with transparent insulating tube.
According to the technical scheme provided by some embodiments of the application, an anti-slip sleeve is arranged on one side, away from the equipment connecting end, of the insulating operating rod; the outer surface of the anti-skid sleeve is closely provided with a plurality of hemispherical bulges.
The beneficial effect of this application: when the middle-placed cabinet is overhauled, the grounding end is fixed with the grounding sheet bar or the grounding body, and the equipment connecting end is directly sleeved outside the fixed contact of the middle-placed cabinet, so that the personal safety of an overhaul worker can be effectively ensured; the conductive contact fingers of the equipment connecting end are directly contacted with the fixed contact of the centrally-mounted cabinet by arranging the equipment connecting end, so that the influence of the number and thickness of the bus bars is avoided, and the insulating sheath of the bus bars does not need to be removed; through setting up fastening spring and first bellying, can prevent to lead electrically conductive touching to indicate and drop, provide the clamp force simultaneously and make equipment link and put cabinet static contact effective connection in.
Drawings
Fig. 1 is a schematic structural diagram of a dedicated ground wire for a centrally installed switchgear according to an embodiment of the present application;
fig. 2 is a schematic structural view of a first fixing plate of a special ground wire for a centrally installed switchgear according to an embodiment of the present disclosure;
fig. 3 is a schematic structural view of a conductive contact finger of a ground wire dedicated to a centrally installed switchgear according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an equipment connection terminal base of a dedicated ground wire for a centrally installed switchgear according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electrical testing device of a dedicated ground line of a centrally installed switchgear according to an embodiment of the present application.
The text labels in the figures are represented as:
1. a connecting wire; 2. a first fixing plate; 3. a second fixing plate; 4. fixing the bolt; 5. a contact finger slot; 6. a conductive contact finger; 7. a first boss portion; 8. a second boss portion; 9. a groove; 10. a fastening spring; 11. an insulating operating rod; 12. the equipment is connected with the end base; 13. a first wiring bolt; 14. an annular groove; 15. an anti-slip sleeve; 16. hemispherical bulges; 17. an electroscopic device; 18. an electroscope; 19. a metal probe; 20. an electricity testing spring; 21. a first fixed arm; 22. a second fixed arm; 23. a connecting arm; 24. a second wiring bolt; 25. a clamping piece; 26. fixing the groove; 27. a screw is advanced; 28. the rod is tightened.
Detailed Description
The following detailed description of the present application is given for the purpose of enabling those skilled in the art to better understand the technical solutions of the present application, and the description in this section is only exemplary and explanatory, and should not be taken as limiting the scope of the present application in any way.
As shown in fig. 1 to fig. 3, the present embodiment provides a grounding wire dedicated for a centrally installed switchgear, including a grounding terminal, an equipment connecting terminal, and a connecting wire 1 connecting the grounding terminal and the equipment connecting terminal; the equipment connecting end is used for being in contact with a fixed contact of the centrally installed switchgear and comprises a supporting frame, a conductive contact finger group and a fastening spring 10; the support frame comprises a first fixing plate 2 and a second fixing plate 3 which are arranged in parallel; a fixing bolt 4 is arranged between the first fixing plate 2 and the second fixing plate 3, and the first fixing plate 2 and the second fixing plate 3 are fixed by penetrating the fixing bolt 4 through the first fixing plate 2 and the second fixing plate 3; through holes with the same diameter are arranged at the corresponding positions of the first fixing plate 2 and the second fixing plate 3; a plurality of finger touch clamping grooves 5 are formed in the periphery of the first fixing plate 2 and the periphery of the second fixing plate 3; the conductive contact finger group is detachably clamped in the contact finger clamping groove 5; the number of the conductive contact finger groups is 5, and each conductive contact finger group comprises 2 conductive contact fingers 6 which are arranged in parallel; the conductive contact finger 6 is provided with an arc-shaped first bulge part 7 at one side close to the through hole of the first fixing plate 2, and a second bulge part 8 at one side close to the through hole of the second fixing plate 3; one side of the conductive contact finger 6, which is far away from the through hole, is provided with at least one groove 9, in this embodiment, 4 grooves 9 are provided, wherein 2 grooves 9 are located at one end close to the first protruding portion 7, and the other 2 grooves 9 are located at one end close to the second protruding portion 8; one side cover that 5 electrically conduct touch and indicate group and keep away from the through-hole is equipped with at least round fastening spring 10, in this embodiment, is equipped with 2 rings of fastening spring 10 altogether, and wherein 1 ring of fastening spring 10 cover is established in the recess 9 that is close to first bellying 7 one end, and 1 ring of fastening spring 10 cover is established in the recess 9 that is close to second bellying 8 one end in addition. By arranging the equipment connecting end, the conductive contact finger 6 of the equipment connecting end is directly contacted with the fixed contact of the centrally-mounted cabinet, so that the influence of the number and thickness of the bus bars is avoided, and the insulating sheath of the bus bars does not need to be removed; through setting up fastening spring 10 and first bellying 7, can prevent to lead that electrically conductive contact finger 6 from droing, provide the clamp force simultaneously and make equipment link and put cabinet static contact effective connection in with.
Referring to fig. 4, in a preferred embodiment, the grounding wire dedicated for the centrally installed switchgear further includes an insulating operating rod 11; an equipment connecting end base 12 is arranged on the insulating operating rod 11; the equipment connecting end is arranged on the equipment connecting end base 12; the outer side wall of the equipment connecting end base 12 is provided with 2 first wiring bolts 13; the equipment connecting end base 12 is in a hollow cylindrical shape; an annular groove 14 is formed in one side, close to the equipment connecting end, of the equipment connecting end base 12; the second bulge 8 is clamped in the annular groove 14; an anti-slip sleeve 15 is arranged on one side of the insulating operating rod 11, which is far away from the equipment connecting end; the outer surface of the anti-slip sleeve 15 is closely provided with a plurality of hemispherical bulges 16. The insulating operating rod 11 is convenient for an operator to hang the equipment connecting end and the fixed contact of the centrally installed switchgear.
Referring further to fig. 5, in a preferred embodiment, an electroscope 17 is disposed between the device connecting end base 12 and the insulating operating rod 11; the electroscope 17 comprises an electroscope 18 and a metal probe 19; the electroscope 18 is fixed on the top of the insulating operating rod 11; a metal probe 19 is arranged on the top of the electroscope 18; the metal probe 19 is electrically connected with the electroscope 18; an electricity testing spring 20 is sleeved on the metal probe 19; the electroscopic spring 20 extends outside the connection end of the device. The electricity testing device 17 is used for testing electricity of equipment in the middle-placed cabinet before the ground wire is hung, so that the ground wire is prevented from being hung in an electrified mode, and the personal safety of operators is guaranteed.
In a preferred embodiment, the ground terminal comprises a U-shaped clip; the U-shaped clip includes a first fixing arm 21, a second fixing arm 22, and a connecting arm 23 connecting the first fixing arm 21 and the second fixing arm 22; the connecting arm 23 is provided with 2 second wiring bolts 24; a clamping piece 25 is arranged in the U-shaped clamp head opening; the clamping piece 25 is arranged in parallel with the first fixing arm 21; a fixing groove 26 is formed in one side, close to the clamping piece 25, of the first fixing arm 21, the section of the fixing groove 26 is arc-shaped, and the arrangement of the fixing groove 26 is favorable for better fixing a grounding bar or a grounding body; a pushing screw 27 is arranged on one side of the clamping piece 25 away from the first fixing arm 21; the pushing screw 27 penetrates through the second fixing arm 22 and is in threaded connection with the second fixing arm 22, and a tightening rod 28 is arranged on one side, away from the clamping piece 25, of the pushing screw 27; the pushing screw 27 is arranged perpendicular to the tightening rod 28; the tightening rod 28 is rotated to drive the pushing screw 27 to rotate so as to adjust the distance between the first fixing arm 21 and the clamping piece 25, thereby adapting to grounding bars or grounding bodies with different thicknesses, preventing the grounding end from falling off and ensuring the effective connection of the grounding end and the grounding bar or the grounding body.
In a preferred embodiment, one end of the connecting wire 1 is connected with the first connecting bolt 13, and the other end is connected with the second connecting bolt 24; the connecting wire 1 is formed by twisting a plurality of strands of annealed copper wires; the outside cladding of connecting wire 1 has transparent insulating tube, prevents copper line wearing and tearing, disconnected strand.
When the special grounding wire for the centrally installed switchgear provided by the embodiment is used, firstly, the tightening rod 28 is rotated to adjust the distance between the clamping piece 25 and the first fixing arm 21, and the grounding bar or the grounding body is fixed to the grounding end; secondly, the handheld insulating operation rod 11 has the one end of antiskid cover 15, stretches into the other end and puts the cabinet inside in, tests the electricity through testing electric installation 17 to putting the cabinet in, and when confirming electroless, cup joints the equipment link in the outside of putting the cabinet static contact in, and electrically conducts and touches finger 6 and put the cabinet contact effective connection in.
When the grounding end is fixed with the grounding sheet row or the grounding body, the equipment connecting end is directly sleeved outside the fixed contact of the middle-placed cabinet, so that the personal safety of maintainers can be effectively ensured; by arranging the equipment connecting end, the conductive contact finger 6 of the equipment connecting end is directly contacted with the fixed contact of the centrally-mounted cabinet, so that the influence of the number and thickness of the bus bars is avoided, and the insulating sheath of the bus bars does not need to be removed; the fastening spring 10 and the first boss 7 are arranged, so that the conductive contact finger 6 can be prevented from falling off, and meanwhile, clamping force is provided to enable the equipment connecting end to be effectively connected with the fixed contact of the centrally-mounted switchgear; by arranging the insulating operating rod 11, an operator can conveniently hang the equipment connecting end and the fixed contact of the centrally installed switchgear; the electricity testing device 17 is used for testing electricity of equipment in the middle-placed cabinet before the ground wire is connected, so that the ground wire is prevented from being connected in an electrified manner, and the personal safety of operators is guaranteed; the transparent insulating tube is coated outside the connecting wire 1, so that the copper wire can be prevented from being abraded and stranded. The special grounding wire for the middle-placed cabinet is simple to install, is suitable for middle-placed cabinets of various models, and can effectively guarantee the personal safety of operators in overhauling and maintaining work.
It should be noted that the electroscope 18 is conventional in the art, and the detailed description thereof is omitted here.
The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention in other instances, which may or may not be practiced, are intended to be within the scope of the present application.
Claims (9)
1. The special grounding wire for the centrally installed switchgear is characterized by comprising a grounding end, an equipment connecting end and a connecting wire (1) for connecting the grounding end and the equipment connecting end; the equipment connecting end comprises a supporting frame, a conductive contact finger group and a fastening spring (10); the supporting frame comprises a first fixing plate (2) and a second fixing plate (3) which are arranged in parallel; a fixing bolt (4) is arranged between the first fixing plate (2) and the second fixing plate (3); through holes with the same diameter are arranged at the corresponding positions of the first fixing plate (2) and the second fixing plate (3); a plurality of contact finger clamping grooves (5) are formed in the peripheries of the first fixing plate (2) and the second fixing plate (3); the conductive contact finger group is detachably clamped in the contact finger clamping groove (5); the number of the conductive contact finger groups is 5; one side, far away from the through holes, of each of the 5 conductive contact finger groups is sleeved with at least one circle of fastening spring (10); the conductive contact finger group comprises 2 conductive contact fingers (6) which are arranged in parallel; and an arc-shaped first bulge part (7) is arranged on one side, close to the through hole, of the conductive contact finger (6).
2. The grounding wire special for the centrally installed switchgear according to claim 1, wherein at least one groove (9) is formed on one side of the conductive contact finger (6) away from the through hole; the fastening spring (10) is clamped in the groove (9).
3. The centrally installed switchgear dedicated ground wire according to claim 1, further comprising an insulating operating rod (11); an equipment connecting end base (12) is arranged on the insulating operating rod (11); the equipment connecting end is arranged on the equipment connecting end base (12); a first wiring bolt (13) is arranged on the outer side wall of the equipment connecting end base (12); and one end of the connecting wire (1) far away from the grounding end is connected with the first connecting bolt (13).
4. The grounding wire special for the centrally installed switchgear according to claim 3, wherein the equipment connecting end base (12) is hollow and cylindrical; an annular groove (14) is formed in one side, close to the equipment connecting end, of the equipment connecting end base (12); a second bulge part (8) is further arranged on one side, close to the through hole, of the conductive contact finger (6); the second bulge (8) is clamped in the annular groove (14).
5. The grounding wire special for the centrally installed switchgear, as claimed in claim 3, wherein an electroscope (17) is provided between the equipment connecting end base (12) and the insulating operating rod (11); the electroscope (17) comprises an electroscope (18) and a metal probe (19); the electroscope (18) is fixed at the top of the insulating operating rod (11); the metal probe (19) is mounted on the top of the electroscope (18); the metal probe (19) is electrically connected with the electroscope (18); an electricity testing spring (20) is sleeved on the metal probe (19); the electroscopic spring (20) extends outside the device connection end.
6. The grounding wire special for the centrally installed switchgear according to claim 1, wherein the grounding end comprises a U-shaped clamp; the U-shaped clamp comprises a first fixing arm (21), a second fixing arm (22) and a connecting arm (23) connecting the first fixing arm (21) and the second fixing arm (22); a second wiring bolt (24) is arranged on the connecting arm (23); one end of the connecting wire (1) far away from the equipment connecting end is connected with the second connecting bolt (24); a clamping piece (25) is arranged in the U-shaped clamp head opening; the clamping piece (25) is arranged in parallel with the first fixing arm (21); a pushing screw rod (27) is arranged on one side, away from the first fixing arm (21), of the clamping piece (25); the pushing screw rod (27) penetrates through the second fixing arm (22) and is in threaded connection with the second fixing arm (22) so as to adjust the distance between the first fixing arm (21) and the clamping piece (25); a tightening rod (28) is arranged on one side, away from the clamping piece (25), of the propelling screw rod (27); the pushing screw (27) is arranged perpendicular to the tightening rod (28).
7. The grounding wire special for the centrally installed switchgear, as claimed in claim 6, wherein the first fixing arm (21) is provided with a fixing groove (26) at a side close to the clamping piece (25).
8. The grounding wire special for the centrally installed switchgear according to claim 1, wherein the connecting wire (1) is formed by twisting a plurality of strands of copper wires; the outside of the connecting wire (1) is coated with a transparent insulating tube.
9. The grounding wire special for the centrally installed switchgear, as claimed in claim 3, wherein an anti-slip sleeve (15) is provided on the side of the insulating operating rod (11) away from the equipment connecting end; the outer surface of the anti-skid sleeve (15) is closely provided with a plurality of hemispherical bulges (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921204531.7U CN209948133U (en) | 2019-07-29 | 2019-07-29 | Special grounding wire for centrally installed switchgear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921204531.7U CN209948133U (en) | 2019-07-29 | 2019-07-29 | Special grounding wire for centrally installed switchgear |
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| CN209948133U true CN209948133U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921204531.7U Active CN209948133U (en) | 2019-07-29 | 2019-07-29 | Special grounding wire for centrally installed switchgear |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364852A (en) * | 2019-07-29 | 2019-10-22 | 国网冀北电力有限公司廊坊供电公司 | A kind of middle-placed switch cabinet Special grounding wire |
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2019
- 2019-07-29 CN CN201921204531.7U patent/CN209948133U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364852A (en) * | 2019-07-29 | 2019-10-22 | 国网冀北电力有限公司廊坊供电公司 | A kind of middle-placed switch cabinet Special grounding wire |
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