CN114421350B - Grounding device for medium-voltage C-GIS switch cabinet and use method thereof - Google Patents
Grounding device for medium-voltage C-GIS switch cabinet and use method thereof Download PDFInfo
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- CN114421350B CN114421350B CN202210232817.6A CN202210232817A CN114421350B CN 114421350 B CN114421350 B CN 114421350B CN 202210232817 A CN202210232817 A CN 202210232817A CN 114421350 B CN114421350 B CN 114421350B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/075—Earthing arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
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- Switch Cases, Indication, And Locking (AREA)
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Abstract
The invention provides a grounding device for a medium-voltage C-GIS switch cabinet and a use method thereof, wherein the grounding device comprises a connecting wire, a grounding wire, a protective shell, a clamping component and grounding contacts, wherein the clamping component is used for clamping and installing on a grounding bar of the medium-voltage C-GIS switch cabinet, and the grounding contacts are respectively A phase, B phase and C phase; the grounding contact comprises a conductive rod and a connecting structure for connecting the grounding contact with the medium-voltage C-GIS switch cabinet, and the connecting structure is arranged at one end of the conductive rod; the number of the connecting wires is equal to that of the grounding contacts, one ends of the three connecting wires are respectively connected with one ends of the conducting rods far away from the connecting structure, and the other ends of the connecting wires are converged through the protective shell and connected with the grounding wire; the ground wire is connected to the clamping member. The grounding device can ensure that the medium-voltage C-GIS switch cabinet and/or a power cable connected with the medium-voltage C-GIS switch cabinet are reliably grounded, avoid serious consequences caused by misoperation, prevent induced static electricity from being generated on a cable line and protect the personal safety of workers.
Description
Technical Field
The invention relates to power cable accessories, in particular to a grounding device for a medium-voltage C-GIS switch cabinet and a using method thereof.
Background
The medium-voltage C-GIS switch cabinet is key equipment in an electric power transmission and distribution system, is widely applied to various power transmission and distribution system projects of airports, railways, subways, light rails, wharfs, large industrial and mining enterprises and the like, is provided with inner cone sockets (also called inner cone sleeves comprising three types of 1#, 2#, and 3 #) meeting European standards EN50180 and EN50181, and is connected with the inner cone sockets on the C-GIS switch cabinet in an installing way through inner cone plug-in separable connectors (also called inner cone plugs), so that the electric connection of a power cable and the C-GIS switch cabinet is realized.
After the medium-voltage C-GIS switch cabinet and the power cable are put into operation for a period of time, conventional power failure maintenance needs to be carried out, or when the switch cabinet and the power line have faults and need to be maintained, the switch cabinet or the power cable must be grounded reliably, so that the condition that the switch cabinet is switched on by mistake or induction static electricity is generated during construction maintenance is prevented, and the personal safety of maintenance personnel is ensured.
At present, when a medium-voltage C-GIS switch cabinet and/or a power cable connected with the medium-voltage C-GIS switch cabinet is maintained and repaired, a common operation method comprises the following steps: (1) confirming unit intervals needing maintenance and overhaul; (2) disconnecting the circuit breaker; (3) disconnecting the isolation switch; (4) closing the grounding switch; (5) closing the breaker; (6) and hanging a safety mark for 'forbidding closing' at intervals on the unit needing maintenance and overhaul. The maintenance has certain potential safety hazard, if the warning board for forbidding closing is manually not hung or taken away, misoperation can be caused, the switch cabinet which is in maintenance and repair is closed, and serious accidents of electric shock casualties and equipment damage of maintenance and repair personnel can be caused.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings in the prior art and provide the grounding device for the medium-voltage C-GIS switch cabinet, which can reliably ground the medium-voltage C-GIS switch cabinet and/or a power cable connected with the medium-voltage C-GIS switch cabinet, avoid serious consequences caused by misoperation, prevent induced static electricity from being generated on a cable line and protect the personal safety of workers. In addition, the grounding device has reasonable structure, simple and convenient installation and repeated use. The invention also provides a use method of the grounding device convenient for quick operation.
In order to achieve the purpose, the invention is realized by the following technical scheme: a grounding device for a medium-voltage C-GIS switch cabinet is characterized in that: the grounding device comprises a connecting wire, a grounding wire, a protective shell, a clamping component and grounding contacts, wherein the clamping component is used for clamping and installing a grounding row of a medium-voltage C-GIS switch cabinet; the grounding contact comprises a conductive rod and a connecting structure for connecting the grounding contact with a medium-voltage C-GIS switch cabinet, and the connecting structure is arranged at one end of the conductive rod; the number of the connecting wires is equal to that of the grounding contacts, one ends of the three connecting wires are respectively connected with one ends of the conducting rods far away from the connecting structure, and the other ends of the three connecting wires are converged through the protective shell and connected with the grounding wire; the grounding wire is connected with the clamping component, so that grounding of the medium-voltage C-GIS switch cabinet and/or a power cable connected with the medium-voltage C-GIS switch cabinet is realized.
In the scheme, the grounding device adopts three-phase grounding contacts A, B and C to be respectively connected with the medium-voltage C-GIS switch cabinet, so that the medium-voltage C-GIS switch cabinet and/or a power cable connected with the medium-voltage C-GIS switch cabinet can be firmly and reliably grounded, the misoperation hidden danger caused by human factors is eliminated, the induction static electricity is prevented from being generated, the safety of equipment and the personal safety of maintenance and repair personnel are protected, and the occurrence of accidents is avoided. Meanwhile, the grounding device is simple and convenient to install, and can be repeatedly, stably and reliably installed and used.
The connecting structure comprises a cone and a contact; the contact is provided with an inner conical hole, and the contact is matched and sleeved with the cone through the inner conical hole.
The outer part of the contact is also provided with a watchband contact finger for realizing sliding connection with an inner cone socket of the medium-voltage C-GIS switch cabinet; the watchband contact finger sleeve is arranged on the contact.
And the conducting rod is provided with a fixing part for connecting with an inner cone socket of the medium-voltage C-GIS switch cabinet.
The fixing part comprises a positioning piece, a mounting plate and a clamping ring; the conductive rod is provided with a clamping groove, the positioning piece is arranged on the conductive rod, and the mounting plate is sleeved on the conductive rod and is positioned between the clamping groove and the positioning piece; the clamping ring is clamped on the clamping groove and fixes the mounting plate; the mounting plate is provided with a plurality of screws I used for being connected with an inner cone socket of the medium-voltage C-GIS switch cabinet. The invention adopts the mode that the mounting plate is fixed on the conducting rod by the clamping ring, so that the mounting plate is convenient and simple to mount, dismount and replace.
The connecting structure also comprises a spring and a protective cover for protecting the contact from being damaged by external force; the protective cover is provided with an inner circular hole; the protective cover is sleeved on the conductive rod, one end of the spring is connected with the protective cover, the other end of the spring abuts against the mounting plate, and the protective cover is positioned on the surface of the contact so that the contact is located in the inner circular hole of the protective cover; the protective cover is movably sleeved on the conducting rod through a spring. The protective cover can effectively protect the contact and protect the contact from being damaged by external force, and can be movably sleeved on the conducting rod through the spring, so that when the grounding device is connected with the medium-voltage C-GIS switch cabinet, the connection of the contact and an inner cone socket for the medium-voltage C-GIS switch cabinet can be prevented, and the conductivity of the grounding device is not influenced.
The one end of three connecting wires is connected with the conducting rod respectively and is kept away from the one end of connection structure and is referred to: the grounding device further comprises a grounding screw rod, the grounding screw rod is in threaded connection with one end, far away from the connecting structure, of the conducting rod, and the connecting wire is fixed.
A cavity is formed in the protective shell, and a through hole communicated with the cavity is formed in the protective shell along the circumference; the three connecting wires respectively penetrate through the through holes to be collected in the cavity, and the grounding wire penetrates through the through holes to be connected with the three connecting wires in the cavity through the screws II. The protective shell can play an effective protection role.
The clamping component comprises a clamping seat, a compression screw and a pressing block; the clamping seat is connected with the grounding wire and is provided with a threaded hole; the pressing screw is adjustably connected with the threaded hole, the end part of the pressing screw is connected with the pressing block, and the pressing block and the clamping seat are used as a space which is fixedly connected with the grounding bar of the medium-voltage C-GIS switch cabinet.
A use method of a grounding device for a medium-voltage C-GIS switch cabinet is characterized by comprising the following steps: the grounding device comprises a connecting wire, a grounding wire, a protective shell, a clamping component and grounding contacts which are respectively A, B and C phases; the grounding contact comprises a conductive rod and a connecting structure, and the connecting structure is arranged at one end of the conductive rod; the number of the connecting wires is equal to that of the grounding contacts and is connected with one end of the conducting rod far away from the connecting structure; the connecting structure comprises a cone and a contact, the contact is provided with an inner conical hole and a watchband contact finger, and the contact is matched and sleeved with the cone through the inner conical hole; the conductive rod is provided with an installation plate, and the installation plate is provided with a plurality of screws I; the connecting structure further comprises a spring and a protective cover for protecting the contact from being damaged by external force, one end of the spring is connected with the protective cover, the other end of the spring abuts against the mounting plate, the protective cover is positioned on the surface of the contact, and the protective cover is movably sleeved on the conductive rod through the spring; the clamping component comprises a clamping seat, a compression screw and a pressing block, the compression screw is adjustably connected with the clamping seat, and the end part of the compression screw is connected with the pressing block;
the using method comprises the following steps:
firstly, inserting the end parts of the conductive rods of the grounding contacts of the A, B and C phases, which are provided with the connecting structures, into the inner cone socket of a medium-voltage C-GIS switch cabinet respectively, so that the contacts on the conductive rods are tightly connected with conductors in the inner cone socket through the contact fingers of the watchband; at the moment, the step end of the inner conductor of the inner cone socket blocks the protective cover to prevent the protective cover from moving forwards, so that the protective cover moves along the opposite direction of the insertion of the conducting rod and compresses the spring;
secondly, attaching the mounting plate of each grounding contact to the end part of an inner cone socket of the medium-voltage C-GIS switch cabinet, and screwing a screw I on the mounting plate to fix the conducting rod on the inner cone socket;
thirdly, clamping the clamping seat onto a grounding bar of the medium-voltage C-GIS switch cabinet, screwing down the compression screw to enable the pressing block to compress the grounding bar of the medium-voltage C-GIS switch cabinet, and enabling the grounding wire to be fixedly connected with the grounding bar of the medium-voltage C-GIS switch cabinet, so that grounding of the medium-voltage C-GIS switch cabinet and/or a power cable connected with the medium-voltage C-GIS switch cabinet is realized;
when the A, B and C three-phase grounding contacts are detached from the inner cone socket of the medium-voltage C-GIS switch cabinet, the protective cover is reset and moved to the surface of the contact under the action of spring force, so that the contact is positioned in the inner circular hole of the protective cover.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the grounding device for the medium-voltage C-GIS switch cabinet can reliably ground the medium-voltage C-GIS switch cabinet and/or a power cable connected with the medium-voltage C-GIS switch cabinet, thereby completely eradicating serious consequences caused by misoperation, simultaneously preventing induced static electricity generated on a cable line and protecting the personal safety of workers.
2. The grounding device for the medium-voltage C-GIS switch cabinet has the advantages of reasonable structure, simplicity and convenience in installation and repeated use.
Drawings
FIG. 1 is a schematic structural view of the grounding device of the present invention;
fig. 2 is a schematic view of a grounding contact structure of the grounding device of the present invention;
FIG. 3 is a schematic view of the conductive rod structure of the grounding device of the present invention;
FIG. 4 is a schematic view of a clamping device of the grounding device of the present invention;
fig. 5 is a partial schematic view of the protective shell structure of the grounding device of the present invention;
FIG. 6 is a schematic view of the grounding device of the present invention in use;
FIG. 7 is an enlarged view at A in FIG. 6;
the device comprises a grounding contact 1, a connecting soft copper wire 2, a grounding soft copper wire 3, a protective shell 4, a clamping component 5, a medium-voltage C-GIS switch cabinet 6, an inner cone socket 7, screws I and 9, screws II, a power cable 10, a conductive rod 11, a contact 12, a protective cover 13, a spring 14, a mounting plate 15, a grounding screw rod 16, a positioning piece 17, a cone 18, an inner cone hole 19, a watchband contact finger 20, an inner hexagon screw I and screw III 23, a pressure plate 24, an inner circular hole 25, a clamping groove 26, a clamping ring 27, a cavity 41, a through hole 42, an upper shell 43, a lower shell 44, an inner hexagon screw II 45, a clamping seat 51, a compression screw 52, a threaded hole 54, a pressure block 55 and a handle 56.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Examples
In this embodiment, the connecting soft copper wire is used as the connecting wire, and the grounding soft copper wire is used as the grounding wire.
As shown in fig. 1 to 7, the grounding device for the medium-voltage C-GIS switch cabinet of the present invention includes a connecting annealed copper wire 2, a grounding annealed copper wire 3, a protective shell 4, a clamping component 5 for clamping and installing on a grounding row of the medium-voltage C-GIS switch cabinet 6, and grounding contacts 1 of three phases a, B, and C, wherein the grounding contact 1 includes a conductive rod 11 and a connecting structure for connecting with the medium-voltage C-GIS switch cabinet 6, the connecting structure is disposed at one end of the conductive rod 11, the number of the connecting annealed copper wires 2 is equal to the number of the grounding contacts 1, one ends of the three connecting annealed copper wires 2 are respectively connected with one end of the conductive rod 11 away from the connecting structure, the other ends of the three connecting annealed copper wires 2 are collected by the protective shell 4 and connected with the grounding annealed copper wire, and a transparent plastic tube is further sleeved on the surface of the connecting annealed copper wires 2 and the grounding annealed copper wire 3 to protect the annealed copper wires from being damaged by external force. The grounding annealed copper wire 3 is connected with the clamping component 5, and the grounding of the medium-voltage C-GIS switch cabinet 6 and/or the grounding of the power cable 10 connected with the medium-voltage C-GIS switch cabinet 6 is realized.
Specifically, the conducting rod 11 of the invention is provided with a fixing part for connecting with the inner cone socket 7 of the medium-voltage C-GIS switch cabinet 6. The fixing part comprises a positioning piece 17, a mounting plate 15 and a clamping ring 27, wherein a clamping groove 26 is formed in the conducting rod 11, the positioning piece 17 is arranged on the conducting rod 11, the mounting plate 15 is sleeved on the conducting rod 11 and is positioned between the clamping groove 26 and the positioning piece 17, and the clamping ring 27 is clamped on the clamping groove 26 and fixes the mounting plate 15. The mounting plate 15 is provided with a plurality of socket head cap screws I21 which are used for being connected with the inner cone socket 7 of the medium-voltage C-GIS switch cabinet 6. The invention adopts the mode that the mounting plate 15 is fixed on the conducting rod 11 by the clamping ring 27, so that the mounting plate 11 is convenient and simple to mount, dismount and replace.
The connecting structure comprises a cone 18 and a contact 12, wherein the contact 12 is provided with an inner conical hole 19, the contact 12 is in matched sleeve connection with the cone 18 through the inner conical hole 19, and the contact 12 is pressed tightly through a screw III 23 and a pressing plate 24. The exterior of the contact 12 is also provided with a watchband contact finger 20 for realizing sliding connection with the inner cone socket 7 of the medium-voltage C-GIS switch cabinet 6, and the watchband contact finger 20 is sleeved on the contact 12.
The connecting structure further comprises a spring 14 and a protective cover 13 for protecting the contact 12 from being damaged by external force, wherein the protective cover 13 is provided with an inner circular hole 25, the protective cover 13 is sleeved on the conducting rod 11, one end of the spring 14 is connected with the protective cover 13, the other end of the spring is abutted against the mounting plate 15, and the protective cover 13 is positioned on the surface of the contact 12, so that the contact 12 is positioned in the inner circular hole 25 of the protective cover 13; the protective cover 13 is movably sleeved on the conducting rod 11 through a spring 14. The protective cover 13 can effectively protect the contact 12 and protect the contact 12 from being damaged by external force, the protective cover 13 can be movably sleeved on the conducting rod 11 through the spring 14, when the grounding device is connected with the medium-voltage C-GIS switch cabinet 6, the connection between the contact 12 and the inner cone socket 7 of the medium-voltage C-GIS switch cabinet 6 can be prevented, and the conducting performance of the grounding device is not influenced.
The grounding device further comprises a grounding screw 16, and the grounding screw 16 is in threaded connection with one end of the conducting rod 11 far away from the connecting structure and fixes the soft copper wire 2.
The protective casing 4 of the present invention includes an upper casing 43 and a lower casing 44, and the upper casing 43 and the lower casing 44 are connected together by a hexagon socket screw ii 45. The protective shell 4 is provided with a cavity 41 inside, and the protective shell 4 is further provided with a through hole 42 communicated with the cavity 41 along the circumference. The three connecting annealed copper wires 2 respectively penetrate through the through holes 42 to be collected in the cavity 41, and the grounding annealed copper wire 3 penetrates through the through holes 42 to be connected with the three connecting annealed copper wires 2 in the cavity 41 through the screws I8. The protective shell 4 of the present invention can play an effective protective role.
The clamping component 5 comprises a clamping seat 51, a compression screw 52 and a pressing block 55, wherein the clamping seat 51 is connected with the grounding annealed copper wire 3 through a screw II 9 and is provided with a threaded hole 54, the compression screw 52 is adjustably connected with the threaded hole 54, the end part of the compression screw is connected with the pressing block 55, and a space for connecting and fixing the pressing block 55 and the clamping seat 51 is formed between the pressing block 55 and the clamping seat 51. The end of the compression screw 52 remote from the mass 55 is provided with a handle 56 to facilitate operation of the compression screw 52.
The use method of the grounding device for the medium-voltage C-GIS switch cabinet comprises the following steps:
firstly, respectively inserting the end parts of the conductive rods 11 of the A, B and C three-phase grounding contacts 1, which are provided with the connecting structures, into the inner cone sockets 7 of the medium-voltage C-GIS switch cabinet 6, so that the contacts 12 on the conductive rods 11 are tightly connected with the conductors in the inner cone sockets 7 through the watchband contact fingers 20; at this time, the stepped end of the inner conductor of the female cone socket 7 blocks the shield 13 to prevent the shield 13 from moving forward, so that the shield 13 moves in the opposite direction to the insertion of the conductive rod 11 and compresses the spring 14;
secondly, attaching the mounting plate 15 of each grounding contact 1 to the end part of the inner cone socket 7 of the medium-voltage C-GIS switch cabinet 6, and screwing the screws I8 on the mounting plate 15 to fix the conducting rods 11 on the inner cone socket 7;
thirdly, clamping the clamping seat 51 to a grounding bar of the medium-voltage C-GIS switch cabinet 6, screwing down the compression screw 52 to enable the pressing block 55 to compress the grounding bar of the medium-voltage C-GIS switch cabinet 6, and enabling the grounding annealed copper wire 3 to be fixedly connected with the grounding bar of the medium-voltage C-GIS switch cabinet 6, so as to realize grounding of the medium-voltage C-GIS switch cabinet 6 and/or the power cable 10 connected with the medium-voltage C-GIS switch cabinet 6;
when the A, B and C three-phase grounding contact 1 is detached from the inner cone socket 7 of the medium-voltage C-GIS switch cabinet 6, the protective cover 13 moves to the surface of the contact 12 in a reset mode under the action of spring force, and the contact 12 is located in the inner circular hole 25 of the protective cover 13.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (6)
1. A grounding device for a medium-voltage C-GIS switch cabinet is characterized in that: the grounding device comprises a connecting wire, a grounding wire, a protective shell, a clamping component and grounding contacts, wherein the clamping component is used for clamping and installing a grounding row of a medium-voltage C-GIS switch cabinet; the grounding contact comprises a conductive rod and a connecting structure for connecting the grounding contact with a medium-voltage C-GIS switch cabinet, and the connecting structure is arranged at one end of the conductive rod; the number of the connecting wires is equal to that of the grounding contacts, one ends of the three connecting wires are respectively connected with one ends of the conducting rods far away from the connecting structure, and the other ends of the three connecting wires are converged through the protective shell and connected with a grounding wire; the grounding wire is connected with the clamping component to realize the grounding of the medium-voltage C-GIS switch cabinet and/or a power cable connected with the medium-voltage C-GIS switch cabinet;
the connecting structure comprises a cone and a contact; the contact is provided with an inner conical hole, and the contact is matched and sleeved with the cone through the inner conical hole;
the conducting rod is provided with a fixing part which is used for being connected with an inner cone socket of the medium-voltage C-GIS switch cabinet;
the fixing component comprises a positioning piece, a mounting plate and a clamping ring; the conducting rod is provided with a clamping groove, the positioning piece is arranged on the conducting rod, and the mounting plate is sleeved on the conducting rod and is positioned between the clamping groove and the positioning piece; the clamping ring is clamped on the clamping groove and fixes the mounting plate; the mounting plate is provided with a plurality of screws I for connecting with an inner cone socket of the medium-voltage C-GIS switch cabinet;
the connecting structure also comprises a spring and a protective cover for protecting the contact from being damaged by external force; the protective cover is provided with an inner circular hole; the protective cover is sleeved on the conductive rod, one end of the spring is connected with the protective cover, the other end of the spring abuts against the mounting plate, and the protective cover is positioned on the surface of the contact so that the contact is located in the inner circular hole of the protective cover; the protective cover is movably sleeved on the conducting rod through a spring.
2. The earthing device for medium voltage C-GIS switchgear according to claim 1, characterized in that: the outer part of the contact is also provided with a watchband contact finger for realizing sliding connection with an inner cone socket of the medium-voltage C-GIS switch cabinet; the watchband contact finger sleeve is arranged on the contact.
3. The grounding device for medium voltage C-GIS switchgear according to claim 1, characterized in that: the one end of three connecting wires is connected with the conducting rod respectively and is kept away from the one end of connection structure and is referred to: the grounding device further comprises a grounding screw, the grounding screw is in threaded connection with one end, far away from the connecting structure, of the conducting rod, and the connecting line is fixed.
4. The earthing device for medium voltage C-GIS switchgear according to claim 1, characterized in that: a cavity is formed in the protective shell, and a through hole communicated with the cavity is formed in the protective shell along the circumference; the three connecting wires respectively penetrate through the through holes to be collected in the cavity, and the grounding wire penetrates through the through holes to be connected with the three connecting wires in the cavity through the screws II.
5. The earthing device for medium voltage C-GIS switchgear according to claim 1, characterized in that: the clamping component comprises a clamping seat, a compression screw and a pressing block; the clamping seat is connected with the grounding wire and is provided with a threaded hole; the pressing screw is adjustably connected with the threaded hole, the end part of the pressing screw is connected with the pressing block, and the pressing block and the clamping seat are used as a space which is fixedly connected with the medium-voltage C-GIS switch cabinet grounding bar.
6. A use method of a grounding device for a medium-voltage C-GIS switch cabinet is characterized by comprising the following steps: the grounding device comprises a connecting wire, a grounding wire, a protective shell, a clamping component and grounding contacts which are respectively A, B and C phases; the grounding contact comprises a conductive rod and a connecting structure, and the connecting structure is arranged at one end of the conductive rod; the number of the connecting wires is equal to that of the grounding contacts and is connected with one end of the conducting rod, which is far away from the connecting structure; the connecting structure comprises a cone and a contact, the contact is provided with an inner conical hole and a watchband contact finger, and the contact is matched and sleeved with the cone through the inner conical hole; the conductive rod is provided with an installation plate, and the installation plate is provided with a plurality of screws I; the connecting structure further comprises a spring and a protective cover for protecting the contact from being damaged by external force, one end of the spring is connected with the protective cover, the other end of the spring is abutted against the mounting plate, the protective cover is positioned on the surface of the contact, and the protective cover is movably sleeved on the conducting rod through the spring; the clamping component comprises a clamping seat, a compression screw and a pressing block, the compression screw is adjustably connected with the clamping seat, and the end part of the compression screw is connected with the pressing block;
the using method comprises the following steps:
firstly, inserting the end parts of the conductive rods of the grounding contacts of the A, B and C phases, which are provided with the connecting structures, into the inner cone socket of a medium-voltage C-GIS switch cabinet respectively, so that the contacts on the conductive rods are tightly connected with conductors in the inner cone socket through the contact fingers of the watchband; at this time, the step end of the inner conductor of the inner cone socket blocks the protective cover to prevent the protective cover from moving forward, so that the protective cover moves along the opposite direction of the insertion of the conducting rod and compresses the spring;
secondly, attaching the mounting plate of each grounding contact to the end part of an inner cone socket of the medium-voltage C-GIS switch cabinet, and screwing a screw I on the mounting plate to fix the conducting rod on the inner cone socket;
thirdly, clamping the clamping seat onto a grounding bar of the medium-voltage C-GIS switch cabinet, screwing down the compression screw to enable the pressing block to compress the grounding bar of the medium-voltage C-GIS switch cabinet, and enabling the grounding wire to be fixedly connected with the grounding bar of the medium-voltage C-GIS switch cabinet, so that grounding of the medium-voltage C-GIS switch cabinet and/or a power cable connected with the medium-voltage C-GIS switch cabinet is realized;
after the grounding contacts of the A, B and C phases are disassembled from the inner cone socket of the medium-voltage C-GIS switch cabinet, the protective cover resets and moves to the surface of the contact under the action of spring force, so that the contact is positioned in the inner circular hole of the protective cover.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210232817.6A CN114421350B (en) | 2022-03-09 | 2022-03-09 | Grounding device for medium-voltage C-GIS switch cabinet and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210232817.6A CN114421350B (en) | 2022-03-09 | 2022-03-09 | Grounding device for medium-voltage C-GIS switch cabinet and use method thereof |
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| CN114421350A CN114421350A (en) | 2022-04-29 |
| CN114421350B true CN114421350B (en) | 2022-12-23 |
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