CN210577372U

CN210577372U - Gas high-voltage insulation switch equipment

Info

Publication number: CN210577372U
Application number: CN201921634874.7U
Authority: CN
Inventors: 李季
Original assignee: Zhuhai Wharton Electric Co ltd
Current assignee: Zhuhai Wharton Electric Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-05-19
Anticipated expiration: 2029-09-27

Abstract

The utility model discloses a gas high-voltage insulation switch device, which comprises a gas box and a contact box, wherein the contact box is axially and vertically arranged at the inner side of a side plate of the gas box, and the contact box can be arranged in the gas box from the outside of the gas box; a switch device is arranged below the contact box and comprises a load switch and a circuit breaker, and the circuit breaker is longitudinally arranged in the gas box; the utility model discloses a through the mode of placing the gas tank in the contact box in, reduced the degree of difficulty of the installation between the switchgear cabinet body, the contact box has reduced switchgear's cost of maintenance from the external detachably of cabinet to the gas tank in simultaneously to circuit breaker through adopting vertical setting has reduced switchgear's volume.

Description

Gas high-voltage insulation switch equipment

Technical Field

The utility model relates to a high voltage distribution cabinet field especially relates to a gaseous high-voltage insulation switchgear.

Background

In the prior art, a contact box adopted by high-voltage switch equipment is mostly installed from the inside of a gas box, when the contact box is burnt out due to overlarge current, the whole gas box needs to be replaced to ensure the normal operation of the switch equipment, so that the maintenance cost of the switch equipment is improved, the resource waste is caused, and the contact box is mostly exposed outside a cabinet body, which is not beneficial to the combined installation of the switch equipment; meanwhile, three phases of the vacuum circuit breakers adopted by the existing high-voltage switch cabinet are mostly transversely arranged, and in order to ensure the insulation distance, the switch cabinet adopting the vacuum circuit breakers has huge volume, is not beneficial to the development of urban network construction and the miniaturization requirement of equipment transformation,

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the high and bulky problem of switchgear of cost of maintenance mentioned above, provide a gaseous high-voltage insulation switchgear.

The utility model discloses a realize through following technical scheme:

a gas high-voltage insulation switch device comprises a gas box and a contact box, wherein the contact box is axially and vertically arranged on the inner side of a side plate of the gas box, and the contact box can be installed in the gas box from the outside of the gas box; and a switch device is arranged below the contact box and comprises a load switch and a circuit breaker, and the circuit breaker is longitudinally arranged in the gas box.

As a further improvement of the above scheme, the contact box comprises an insulation box body and an electric conductor arranged in the insulation box body; the insulating box body is the umbrella skirt form, the electric conductor comprises cylinder and segment connection, the cylinder extends to outside the insulating box body, connects main generating line row, and fixes on the cross-section of insulating box body, the central axis and the insulating box body the central axis coincidence of electric conductor.

As a further improvement of the above scheme, a flange is arranged on the bottom surface of the insulating box body, and a flange of the flange is buckled on the outer side of the side plate of the air box and is connected with a mounting plate arranged on the outer side of the air box through a bolt.

As a further improvement of the scheme, the insulating box body is made of SMC composite materials.

As a further improvement of the above scheme, the load switch comprises a switch body and a front plate, wherein the front plate is provided with a plurality of through holes with different sizes, and the front plate is made of an SMC composite material.

As a further improvement of the above scheme, the circuit breaker includes a three-position disconnecting switch, a vacuum circuit breaker and an operating mechanism, the three-position disconnecting switch and the matched vacuum circuit breaker are arranged in a three-phase longitudinal direction, each phase of vacuum circuit breaker is electrically connected with an isolation static contact of the corresponding disconnecting switch, and an isolation moving contact of the disconnecting switch rotates under the control of the linkage main shaft and the operating mechanism and is respectively in conductive contact with the isolation static contact and a grounding contact or in a separated brake suspension state.

As a further improvement of the above scheme, the vacuum circuit breaker comprises a vacuum bubble, a soft touch plate and a switch connecting bar which are electrically connected in sequence; the switch connection bank is electrically connected with the electrical conductor.

As a further improvement of the above scheme, the vacuum bulb comprises an insulating shell, a conductive rod, a moving contact, a static contact and a spring pull rod; the insulating shell is cylindrical, the conducting rods are divided into an upper conducting rod and a lower conducting rod which are respectively arranged on the upper bottom surface and the lower bottom surface of the insulating shell, one end of the upper conducting rod is connected with a spring pull rod outside the insulating shell, the other end of the upper conducting rod is connected with a moving contact, one end of the lower conducting rod is connected with an isolation static contact, the other end of the lower conducting rod is connected with a static contact, and the spring pull rod can drive the upper conducting rod to move up and down to enable the moving contact to; a shielding cover is arranged in the insulating shell, and the moving contact and the static contact are both arranged in the shielding cover; the soft touch plate is arranged between the spring pull rod and the insulating shell.

The beneficial effects are that: compared with the prior art, the utility model discloses a gaseous high-voltage insulation switchgear, through the mode of placing the contact box in the gas tank in, reduced the degree of difficulty of the installation between the switchgear cabinet body, the contact box is installed to the gas tank in the detachably from the external cabinet body simultaneously, makes things convenient for the direct change when the contact box damages, has reduced switchgear's cost of maintenance; the utility model discloses still reduce switchgear's volume through the circuit breaker that adopts vertical setting.

Drawings

The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a schematic structural view of a contact box according to a preferred embodiment of the present invention;

FIG. 3 is a schematic front view of FIG. 2;

FIG. 4 is a schematic view of a vacuum bulb according to a preferred embodiment of the present invention;

fig. 5 is a schematic structural diagram of a load switch according to a preferred embodiment of the present invention.

Detailed Description

As shown in fig. 1, a gas high-voltage insulation switch device is characterized by comprising a gas box 1 and a contact box 2, wherein the contact box 2 is axially and vertically arranged on the inner side of a side plate of the gas box 1 and is connected with different cabinet bodies to play the roles of insulation, isolation and connection transition, the contact box 2 can be detachably installed in the gas box from the outside of the gas box, and when the contact box 2 is damaged, the contact box can be directly detached and replaced without replacing the whole gas box 1; a switch mechanism is arranged below the contact box 2 and used for realizing the functions of switching on and off a circuit of the switch equipment, the switch mechanism comprises a load switch 4 and a circuit breaker 5, and the circuit breaker 5 is longitudinally arranged in the gas tank 1, so that the overall volume of the switch equipment is favorably reduced; the gas box 1 is filled with SF6 gas, and the SF6 gas has good insulation and arc extinguishing performance, so that the gas box filled with the SF6 gas can ensure the short-circuit breaking capability and safety of a switch mechanism in the gas box.

Specifically, as shown in fig. 2 and 3, the contact box 2 includes an insulation box body 21 and an electrical conductor 22 disposed in the insulation box body 21; the insulating box body 21 is in an umbrella skirt shape, the umbrella skirt-shaped insulating box body 21 is easier to install into the air box from the outside of the air box, and the creepage distance of the insulating box body is increased so as to enhance the insulating property, the insulating box body 21 is made of SMC composite materials, and the SMC composite materials have excellent insulating property, small density and light weight; the electric conductor 22 is formed by connecting a cylinder 221 and a spherical segment 222, the cylinder 221 extends out of the insulating box body 21 and can be connected with the main bus bar, the cylinder 221 is fixed on the cross section of the insulating box body 21, and the central axis of the electric conductor 22 is coincident with the central axis of the insulating box body 21.

Specifically, the bottom surface of the insulating box body 21 is provided with a flange 6, a flange 61 of the flange 6 is buckled on a side plate of the gas box and is connected with a mounting plate arranged on the outer side of the gas box 1 through a bolt, and when the contact box 2 is damaged, the bolt can be unscrewed from the outside of the gas box 1, so that the damaged contact box 2 can be taken down.

Specifically, as shown in fig. 5, the load switch 4 includes a switch body and a front plate 41, the front plate 41 is provided with a plurality of through holes with different sizes for connecting an operating mechanism of the load switch, the front plate 41 is made of SMC composite material, the SMC composite material has high strength besides the advantages of excellent insulating property and light weight, the front plate can be ensured not to be broken when the through holes are formed, and meanwhile, the pressure strength which can be borne by the SMC load material is high in the material with the same thickness, so that the thickness of the front plate made of SMC composite material is small, and the manufacturing cost of the switch device is saved.

Specifically, as shown in fig. 1, the circuit breaker 5 includes a three-position disconnecting switch, a vacuum circuit breaker and an operating mechanism, the three-position disconnecting switch and the matched vacuum circuit breaker are arranged in a three-phase longitudinal direction, each phase of vacuum circuit breaker is electrically connected with an isolation fixed contact of the corresponding disconnecting switch, and an isolation moving contact of the disconnecting switch rotates under the control of the linkage main shaft and the operating mechanism to be respectively in conductive contact with the isolation fixed contact and a grounding contact or in a separated-brake suspension state.

Specifically, as shown in fig. 1, the vacuum circuit breaker includes a vacuum bubble 51, a soft contact plate 52 and a switch connection bar 53 which are electrically connected in sequence; the switch connecting bar 53 is electrically connected with the electric conductor 22, and the vacuum bubble 51 is small in size while the circuit is disconnected, so that the size of the switch device is reduced.

Specifically, as shown in fig. 4, the vacuum bubble 51 includes an insulating housing 511, a movable contact 513, a fixed contact 514, a spring pull rod 515, and a conductive rod; the insulating shell 511 is cylindrical, the conducting rods are divided into an upper conducting rod 516 and a lower conducting rod 517 which are respectively arranged on the upper bottom surface and the lower bottom surface of the insulating shell 511, one end of the upper conducting rod 516 is connected with a spring pull rod 515 outside the insulating shell 511, the other end of the upper conducting rod 516 is connected with a moving contact 513, one end of the lower conducting rod 517 is connected with an isolation static contact, the other end of the lower conducting rod is connected with a static contact 514, and the spring pull rod 515 can drive the upper conducting rod 516 to move up and down so as to enable the moving contact; a shielding cover 518 is arranged in the insulating shell 511, and the movable contact 513 and the fixed contact 514 are both arranged in the shielding cover 518; the shield 518 provides a vacuum environment for the moving contact 513 and the fixed contact 514, so as to prevent electric arcs from occurring when the moving contact 513 and the fixed contact 514 are switched off; the soft contact plate 52 is disposed between the pogo pin 515 and the insulating case 511.

The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments may be combined with each other into a new embodiment. The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of the technical solutions of the present invention.

Claims

1. The gas high-voltage insulation switch equipment is characterized by comprising a gas box (1) and a contact box (2), wherein the contact box (2) is axially and vertically arranged on the inner side of a side plate of the gas box (1), and the contact box (2) can be installed in the gas box from the outside of the gas box; a switch mechanism is arranged below the contact box (2), the switch mechanism comprises a load switch (4) and a circuit breaker (5), and the circuit breaker (5) is longitudinally arranged in the gas box (1).

2. The switchgear device according to claim 1, characterized in that the contact box (2) comprises an insulation box body (21) and an electrical conductor (22) arranged in the insulation box body (21); insulating box body (21) are the umbrella skirt form, electric conductor (22) are connected by cylinder (221) and ball and are constituted, cylinder (221) extend to outside insulating box body (21) and fix on the cross-section of insulating box body (21), the central axis and the insulating box body (21) the central axis coincidence of electric conductor (22).

3. The switchgear according to claim 2, wherein the bottom of the insulating box (21) is provided with a flange (6), and a flange (61) of the flange (6) is fastened on a side plate of the gas box (1) and connected with a mounting plate arranged outside the gas box (1) through bolts.

4. A switchgear device according to claim 3, characterized in that said insulating box (21) is made of SMC composite material.

5. A switchgear device according to claim 1, characterized in that said load switch (4) comprises a switch body and a front plate (41), said front plate (41) being provided with a plurality of through holes of different sizes, said front plate (41) being made of SMC composite material.

6. The switchgear according to claim 1, wherein the circuit breaker (5) comprises a three-position disconnecting switch (7), a vacuum circuit breaker and an operating mechanism, the three-position disconnecting switch and the matched vacuum circuit breaker are arranged in a three-phase longitudinal direction, each phase of vacuum circuit breaker is electrically connected with the isolated static contact of the corresponding disconnecting switch, and the isolated moving contact of the disconnecting switch rotates under the control of the linkage main shaft and the operating mechanism to be respectively in conductive contact with the isolated static contact and the grounding contact or in a separated-brake suspension state.

7. The switchgear device according to claim 6, characterized in that said vacuum circuit breaker comprises a vacuum bulb (51), a soft contact plate (52) and a switch connection bank (53) electrically connected in sequence; the switch connection bank (53) is electrically connected to the electrical conductor (22).

8. The switchgear device according to claim 7, characterized in that said vacuum bulb (51) comprises an insulating housing (511), a movable contact (513), a stationary contact (514), a spring tie (515) and a conductive rod; the insulating shell (511) is cylindrical, the conducting rods are divided into an upper conducting rod (516) and a lower conducting rod (517) which are respectively arranged on the upper bottom surface and the lower bottom surface of the insulating shell (511), one end of the upper conducting rod (516) is connected with a spring pull rod (515) outside the insulating shell (511), the other end of the upper conducting rod is connected with a moving contact (513), one end of the lower conducting rod (517) is connected with an isolation static contact, the other end of the lower conducting rod is connected with a static contact (514), the spring pull rod (515) can drive the upper conducting rod (516) to move up and down, and the moving contact (513) is separated from or contacted with; a shielding cover (518) is arranged in the insulating shell (511), and the moving contact (513) and the fixed contact (514) are both arranged in the shielding cover (518); the flexible contact plate (52) is arranged between the spring pull rod (515) and the insulating shell (511).