CN216819183U - GIS gas insulation combined electrical apparatus self-sealing cable tank - Google Patents
GIS gas insulation combined electrical apparatus self-sealing cable tank Download PDFInfo
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- CN216819183U CN216819183U CN202220457157.7U CN202220457157U CN216819183U CN 216819183 U CN216819183 U CN 216819183U CN 202220457157 U CN202220457157 U CN 202220457157U CN 216819183 U CN216819183 U CN 216819183U
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Abstract
The utility model relates to a self-sealing cable tank of a GIS gas insulated switchgear, which comprises a sealed tank body, wherein an inflating nozzle is arranged on the tank body, three upper connecting holes are formed in the upper end of the tank body, three lower connecting holes are formed in the lower end of the tank body, an upper insulated mounting pipe extending towards the interior of the tank body is connected in the upper connecting holes, an upper connecting conductor is hermetically and fixedly connected to the lower end of the upper insulated mounting pipe, a lower insulated mounting pipe extending towards the interior of the tank body is connected in the lower connecting holes, a lower connecting conductor is hermetically and fixedly connected to the upper end of the lower insulated mounting pipe, the self-sealing cable tank also comprises an upper protection plate for sealing and covering the upper connecting holes and a lower protection shell for sealing and covering the lower connecting holes, the cable tank is processed in a unit factory, a field test is not opened any more, the longer time for processing a field air chamber is saved, a test sleeve and a cable terminal can be directly butted, and the working efficiency is greatly improved; the traditional SF6 greenhouse gas is not charged and discharged for many times, so that the leakage risk is reduced, and the environmental protection is facilitated; the integration and reliability of the switchgear unit are improved.
Description
Technical Field
The utility model relates to the field of switch equipment, in particular to a self-sealing cable tank of a GIS gas insulated switchgear.
Background
A Gas Insulated metal-enclosed Switchgear (GIS) is a Switchgear assembly formed by enclosing a circuit breaker, a disconnector, a grounding switch, a current transformer, a voltage transformer, a cable tank or a bushing, an inlet/outlet line and other elements in a grounded metal casing, and filling SF6 Gas with a certain pressure as an insulating medium and an arc extinguishing medium. The GIS combined electrical apparatus cable tank is a conventional cable inlet and outlet interface form, generally divides the work with the cable terminal manufacturer according to the national standard to carry out cable head installation, the bottom of the cable tank of the prior GIS combined electrical apparatus high-voltage equipment cable tank is an open structure, a cover plate at the bottom of the cable tank body needs to be opened when the cable head is installed on site, the totally-enclosed combined electrical apparatus cable tank needs to be opened in the process, the internal SF6 gas needs to be alternately charged and discharged, the installation acceptance period is prolonged, foreign matter pollution is easily caused when the equipment is internally opened, the insulation failure is seriously easily caused, and the cross-unit butt joint installation needs technology cross-bottom, so the problem of cross-over fault easily occurs.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a self-sealing cable tank of a GIS gas insulated switchgear.
The utility model is realized by the following technical scheme, and provides a GIS gas insulated switchgear self-sealing cable tank which comprises a sealed tank body, wherein an inflating nozzle is arranged on the tank body, the upper end of the tank body is provided with three upper connecting holes (A, B, C three-phase), the lower end of the tank body is provided with three lower connecting holes (A, B, C three-phase), an upper insulated mounting pipe extending towards the interior of the tank body is connected in the upper connecting holes, the lower end of the upper insulated mounting pipe is hermetically and fixedly connected with an upper connecting conductor, a lower insulated mounting pipe extending towards the interior of the tank body is connected in the lower connecting holes, the upper end of the lower insulated mounting pipe is hermetically and fixedly connected with a lower connecting conductor, and the GIS gas insulated switchgear self-sealing cable tank also comprises an upper protection plate for sealing and covering the upper connecting holes and a lower protection shell for sealing and covering the lower connecting holes.
The sealing of the internal portion of jar has been guaranteed through insulating installation pipe and last insulating installation pipe down in this scheme, and lower protective housing and upper shield have realized the secondary seal of lower connecting hole and last connecting hole, and during the on-the-spot installation, only need pull down protective housing and upper shield and just can realize connecting conductor and lower connecting conductor's electric connection to prevent the internal portion gas leakage of jar.
Preferably, the upper connecting conductor is provided with a screw thread counter bore positioned in the upper insulating mounting tube, and the lower connecting conductor is provided with a screw thread counter bore positioned in the lower insulating mounting tube. The threaded counter bore arranged in the scheme is convenient to be connected with a split cable terminal or a test sleeve terminal.
Preferably, each upper connecting hole is provided with an upper protecting plate, and each connecting hole is provided with a lower protecting shell. The closing cap of connecting hole has been realized three through three last protection shield in this scheme.
Preferably, the upper insulating mounting tube and the lower insulating mounting tube are both conical. The upper insulating installation pipe and the lower insulating installation pipe in the scheme are both conical, and sealing and centering of the end part can be conveniently realized through the upper connecting conductor and the lower connecting conductor.
Preferably, a nonmetallic insulating transition plate is arranged between the lower protective shell and the tank body, insulating transition plate fixing bolts penetrate through the insulating transition plate and the tank body and then are fastened on the lower insulating mounting pipe, and lower protective shell fixing bolts penetrate through the lower protective shell and the insulating transition plate and then are fastened on the tank body. According to the utility model, the insulating transition plate and the lower insulating installation pipe are fixed on the tank body through the insulating transition plate fixing bolt, and then the lower protective shell and the insulating transition plate are fixed on the tank body through the lower protective shell fixing bolt, so that the connection among the parts is tight. Meanwhile, the insulating part can improve the safety performance and increase the safety redundancy.
Preferably, a transition pipe is arranged above the upper connecting hole, the lower end of the transition pipe is connected with the tank body through a flange, and the upper end of the transition pipe is connected with the upper protection plate through a flange. In the scheme, the upper end and the lower end of the transition pipe are connected through flanges, so that the connection is firm and the sealing performance is good.
Preferably, the tank body, the upper insulating mounting pipe and the lower insulating mounting pipe are matched to form a closed space.
The utility model has the beneficial effects that: according to the self-closing cable tank of the GIS gas insulated switchgear, the cable tank is processed in a unit factory, a field test is not required to open a cover, long-time consumption of gas chamber processing is avoided, butt joint of a test sleeve and a cable terminal can be directly realized, and the working efficiency is greatly improved; the traditional SF6 greenhouse gas is not charged and discharged for many times, so that the leakage risk is reduced, and the environmental protection is facilitated; the integration and reliability of the switchgear unit are improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the installation process of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 1 in accordance with the present invention;
FIG. 4 is an enlarged view of portion B of FIG. 1 in accordance with the present invention;
FIG. 5 is a schematic view of the bottom of the can body of the present invention;
FIG. 6 is a schematic top view of a can body according to the present invention;
shown in the figure:
1. the device comprises a tank body, 2, a lower insulating installation pipe, 3, a lower connecting conductor, 4, a lower protective shell, 5, an insulating transition plate, 6, an upper insulating installation pipe, 7, an upper connecting conductor, 8, an upper protective plate, 9, a transition pipe, 10, an inflation nozzle, 11, a split cable terminal, 12, a test sleeve, 13 and a test sleeve terminal.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in fig. 1 to 6, the self-sealing cable tank of the GIS gas insulated switchgear of the present invention includes a sealed tank body 1, wherein an inflation nozzle 10 is installed on the tank body 1, and the inflation nozzle 10 is located on a side surface of the tank body 1.
The up end and the lower terminal surface of the jar body 1 are the plane, and open the upper end of the jar body 1 has three upper connecting hole, upper connecting hole internal connection is to the last insulating installation pipe 6 of jar internal portion extension, upper insulating installation pipe 6 is greater than the lower extreme diameter for toper and upper end diameter, and the upper end laminating of upper insulating installation pipe 6 is on the inner wall of the jar body 1 and the connecting hole is plugged up.
The lower end of the upper insulating installation pipe 6 is fixedly connected with an upper connecting conductor 7 in a sealing mode, the upper connecting conductor 7 is poured in an inner hole in the lower end of the upper insulating installation pipe 6, sealing is achieved, and a threaded counter bore located in the upper insulating installation pipe 6 is formed in the upper connecting conductor 7 and used for being connected with a test sleeve terminal 13.
The tank body is characterized by further comprising upper protection plates 8 for covering the upper connecting holes, each upper connecting hole is provided with one upper protection plate 8, a nonmetallic transition pipe 9 is arranged above each upper connecting hole, the lower end of each transition pipe 9 is connected to the outer wall of the tank body 1, and the upper end of each transition pipe 9 is connected to the lower end face of each upper protection plate 8.
The lower end of the transition pipe 9 is connected with the tank body 1 through a flange, and the upper end of the transition pipe 9 is connected with the upper protection plate 8 through a flange.
The lower extreme of jar body 1 is opened there are three lower connecting holes, the downthehole lower insulating installation pipe 2 that extends to jar body 1 inside that is connected with down, lower insulating installation pipe 2 is the toper and the lower extreme diameter is greater than the upper end diameter. The lower end of the lower insulating installation pipe 2 is attached to the inner wall of the tank body 1 and plugs the lower connecting hole.
The upper end of the lower insulating installation pipe 2 is hermetically and fixedly connected with a lower connecting conductor 3, the lower connecting conductor 3 is poured in an inner hole in the upper end of the lower insulating installation pipe 2, so that sealing is achieved, and a threaded counter bore located in the lower insulating installation pipe 2 is formed in the lower connecting conductor 3 and used for being connected with the split cable terminal 11.
The protective device further comprises lower protective shells 4 for covering the lower connecting holes, and each lower connecting hole is provided with one lower protective shell 4. A nonmetal insulating transition plate 5 is arranged between the lower protective shell 4 and the tank body 1, an insulating transition plate fixing bolt penetrates through the insulating transition plate 5 and the tank body 1 and then is fastened on the lower insulating mounting pipe 2, and a lower protective shell fixing bolt penetrates through the lower protective shell 4 and the insulating transition plate 5 and then is fastened on the tank body 1.
The tank body 1, the upper insulating mounting tube 6 and the lower insulating mounting tube 2 are matched to form a closed space, and an external conductor does not need to be butted by opening a closed air chamber.
The use method of the utility model comprises the following steps:
as shown in fig. 1, when leaving the factory, the lower protective shell 4 covers the lower connecting hole, and the upper protective plate 8 covers the upper connecting hole, so that the double-layer sealing of the can body 1 is realized.
As shown in fig. 2, when mounting, the upper protection plate 8 and the lower protection shell 4 are removed, at which time the sealing of the tank body 1 is achieved by the lower insulating mounting tube 2 and the upper insulating mounting tube 6, and then the three test bushing terminals 13 of the test bushing 12 are connected to the upper connecting conductor 7 and the three split cable terminals 11 are connected to the lower connecting conductor 3.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a GIS gas insulation combined electrical apparatus is from sealing cable drum which characterized in that: including inclosed jar body (1), be equipped with charging connector (10) on jar body (1), open the upper end of jar body (1) has three last connecting hole, and open the lower extreme of jar body (1) has three lower connecting hole, go up the connecting hole and be connected to last insulating installation pipe (6) that extend to jar body (1) inside, the airtight rigid coupling of lower extreme of going up insulating installation pipe (6) has last connecting conductor (7), the connecting hole is connected down to lower insulating installation pipe (2) that extend to jar body (1) inside, and the airtight rigid coupling in upper end of lower insulating installation pipe (2) has lower connecting conductor (3), still includes upper protection shield (8) and lower protective housing (4) of connecting hole under the closing cap of connecting hole on the closing cap.
2. The self-closing cable pot of the GIS gas insulated switchgear of claim 1, characterized in that: the upper connecting conductor (7) is provided with a thread counter bore positioned in the upper insulating mounting pipe (6), and the lower connecting conductor (3) is provided with a thread counter bore positioned in the lower insulating mounting pipe (2).
3. The self-closing cable pot of the GIS gas insulated switchgear of claim 1, characterized in that: each upper connecting hole is provided with an upper protective plate (8), and each lower connecting hole is provided with a lower protective shell (4).
4. The self-closing cable pot of the GIS gas insulated switchgear of claim 1, characterized in that: the upper insulating mounting tube (6) and the lower insulating mounting tube (2) are both conical.
5. The self-sealing cable pot of the GIS gas insulated switchgear according to claim 1, characterized in that: a nonmetal insulating transition plate (5) is arranged between the lower protective shell (4) and the tank body (1), an insulating transition plate fixing bolt penetrates through the insulating transition plate (5) and the tank body (1) and then is fastened on the lower insulating mounting pipe (2), and a lower protective shell fixing bolt penetrates through the lower protective shell (4) and the insulating transition plate (5) and then is fastened on the tank body (1).
6. The self-closing cable pot of the GIS gas insulated switchgear of claim 1, characterized in that: the transition pipe (9) is arranged above the upper connecting hole, the lower end of the transition pipe (9) is connected with the tank body (1) through a flange, and the upper end of the transition pipe (9) is connected with the upper protective plate (8) through a flange.
7. The self-closing cable pot of the GIS gas insulated switchgear of claim 1, characterized in that: the tank body (1), the upper insulating mounting pipe (6) and the lower insulating mounting pipe (2) are matched to form a closed space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220457157.7U CN216819183U (en) | 2022-03-04 | 2022-03-04 | GIS gas insulation combined electrical apparatus self-sealing cable tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220457157.7U CN216819183U (en) | 2022-03-04 | 2022-03-04 | GIS gas insulation combined electrical apparatus self-sealing cable tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216819183U true CN216819183U (en) | 2022-06-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220457157.7U Active CN216819183U (en) | 2022-03-04 | 2022-03-04 | GIS gas insulation combined electrical apparatus self-sealing cable tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216819183U (en) |
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2022
- 2022-03-04 CN CN202220457157.7U patent/CN216819183U/en active Active
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