阅读说明：本技术 一种气体绝缘开关设备 (Gas insulation switch equipment ) 是由 钱远驰 周斌 张力文 黄楷涛 王翔 于 2019-11-13 设计创作，主要内容包括：本发明公开了一种气体绝缘开关设备,包括固定座及设置在所述固定座上方的开关室、机构室和二次接线室,所述开关室内设置有开关模块,所述开关模块包括一体式的框架,所述框架从上至下依次安装有断路器开关及隔离接地开关。通过将断路器开关及隔离接地开关集成在一体式框架上,在将开关模块装配到设备箱体内时,无需将各个零件逐个装配,减小体积,有利于厂内备货及简化装配流程。(The invention discloses a gas insulated switchgear which comprises a fixed seat, and a switch chamber, a mechanism chamber and a secondary wiring chamber which are arranged above the fixed seat, wherein a switch module is arranged in the switch chamber, the switch module comprises an integrated frame, and a breaker switch and an isolation grounding switch are sequentially arranged on the frame from top to bottom. Through with circuit breaker switch and isolation earthing switch integration on the integral type frame, when assembling switch module in the equipment box, need not to assemble each part one by one, reduce the volume, be favorable to the factory stock and simplify the assembly flow.)

1. A gas-insulated switchgear device, characterized in that: including fixing base (1) and setting be in switch room (2), mechanism room (3) and secondary wiring room (4) of fixing base (1) top, be provided with switch module (24) in switch room (2), switch module (24) include frame (243) of integral type, frame (243) are from last to installing circuit breaker switch (241) and isolation earthing switch (242) down in proper order.

2. A gas-insulated switchgear device as claimed in claim 1, characterized in that: breaker switch (241) include base (2411) and set up insulating cylinder (2412) on the base, be equipped with the cavity in insulating cylinder (2412), from last to having set gradually vacuum interrupter (24121), insulating pull rod (24122) and permanent magnetism operating device (24123) down in the cavity, permanent magnetism operating device (24123) include quiet iron core (241231) and move iron core (241232), and set up quiet iron core (241231), move operating coil (241233) and the elastic component between iron core (241232), quiet iron core (241231) and move iron core (241232) and all adopt the rectangular magnetic material to make.

3. A gas-insulated switchgear device as claimed in claim 1, characterized in that: one side of frame (243) sets up fixed plate (2431) and sets up insulating supporter (24311) on fixed plate (2431), the opposite side of frame (243) sets up contact mounting panel (2432), be provided with three-phase run-on (244) between circuit breaker switch (241) and isolation earthing switch (242), circuit breaker switch (241) is connected to the upper end of three-phase run-on (244), and isolation earthing switch (242) is connected to the lower extreme, the middle part with insulating supporter (24311) is fixed.

4. A gas-insulated switchgear device as claimed in claim 3, characterized in that: the isolation grounding switch (242) comprises a grounding copper bar (2421), a grounding contact (2422), a first isolation contact (2423), a second isolation contact (2424), an isolation knife component (2425), an insulating cover (2426), an isolation grounding operation shaft (2427) and an insulating support (2428), wherein the grounding copper bar (2421) is arranged on the contact mounting plate (2432), the grounding contact (2422) is arranged on the grounding copper bar (2421), the first isolation contact (2423) is arranged at the lower end of the three-phase connecting row (244), the isolation grounding operation shaft (2427) is arranged on the frame (243), the insulating cover (2426) is arranged on the isolation grounding operation shaft (2427) and can rotate around the isolation grounding operation shaft (2427), the isolation knife component (2425) is fixed in the insulating cover (2426), and the insulating support (2428) is fixed at the bottom of the frame (2428), the second isolation contact (2424) is fixed on an insulating support (2428).

5. A gas-insulated switchgear device as claimed in claim 4, characterized in that: the grounding contact (2422), the first isolation contact (2423) and the second isolation contact (2424) are arranged on an arc with an isolation grounding operation shaft (2427) as a circle center at intervals.

6. A gas-insulated switchgear device as claimed in claim 4 or 5, characterized in that: the insulating support (2428) comprises 2 side plates (24281), a support bottom plate (24282) and 4 middle partition plates (24283), the side plates (24281) are respectively arranged on two sides of the support bottom plate (24282), the side plates (24281) are in joggled joint with the support bottom plate (24282), the middle partition plates (24283) are arranged on the support bottom plate (24282) and located between the two side plates (24281), and the middle partition plates (24283) are in joggled joint with the two side plates (24281).

7. A gas-insulated switchgear device as claimed in claim 1, characterized in that: the mechanism chamber (3) is respectively provided with a manual brake separating mechanism (311) connected with the breaker switch (241) through a first dynamic seal (312) and an isolation operating mechanism (321) connected with the isolation grounding switch through a second dynamic seal (322) from top to bottom.

8. A gas-insulated switchgear device as claimed in claim 1 or 2, characterized in that: the width of the gas insulated switchgear is less than or equal to 325mm, and the length of the gas insulated switchgear is less than or equal to 800 mm.

9. A gas-insulated switchgear device as claimed in claim 1, characterized in that: the frame (243) comprises a front plate (2434), a rear plate (2435), a fixing plate (2431), a contact mounting plate (2432) and a breaker mounting plate (2433), wherein the contact mounting plate (2432) and the breaker mounting plate (2433) are arranged between the front plate (2434) and the rear plate (2435), and the number of the breaker mounting plates (2433) is two and is respectively arranged on the upper portions of the front plate (2434) and the rear plate (2435).

10. A gas-insulated switchgear device as claimed in claim 1, characterized in that: the device also comprises an air box (21), wherein a top expansion sleeve (22), a connecting copper bar (23), a breaker switch (241), an isolation grounding switch (242), an incoming line flow guiding module (25), a grounding flow guiding module (26), an incoming line sleeve (27) and a pressure release valve (28) are sequentially arranged along the vertical direction of the air box (21), the upper end of the switch module (24) is connected with the top expansion sleeve (22) through a connecting copper bar (23), the outer edge of the connecting copper bar (23) is arc-shaped, the air tank (21) is a totally-enclosed tank body, the gas box (21) is filled with sulfur hexafluoride gas with rated pressure, the gas box (21) is provided with a first through hole (211) opposite to the breaker switch (241), a second through hole (212) opposite to the isolation grounding switch (242), a gas pressure meter fixing hole (213) and an observation hole (214), and a grounding flange (261) and a pressure release valve (28) are arranged at the bottom of the air box (21).

Technical Field

The invention relates to the technical field of ring main units, in particular to a gas insulated switchgear.

Background

With the rapid development of national economy, the dependence degree of various industries on electric energy is higher and higher, so that the reliability requirement of users in the power industry on switch equipment is higher and higher. Under the background of the national advocated maintenance-free and miniaturization, the ring main unit with simple structure, miniaturization and reliable operation, especially the gas insulated switchgear, becomes a new research project which is disputed in the industry. The gas insulated switchgear among the prior art is bulky, the structure is heavy, need assemble the cabinet body with breaker switch and isolation earthing switch's part one by one, the assembly is difficult, and the operating device of inside circuit breaker adopts spring operating device or permanent magnetism operating device more, spring operating device part is up to 200 surplus money, all need guarantee relative accurate position between every part, especially for the switch guarantees to close the position, the semi-axis of reposition of redundant personnel, processing or assembly error are slightly big, then can cause the condition that the mechanism can not move, so there is higher instability in this type of mechanism, the fault incidence is high. The conventional permanent magnet mechanism generally uses a permanent magnet as a static iron core, reverse current is required to be applied to a coil in the switching-off process to generate a reverse magnetic field, the switching-off is carried out by relying on an over travel spring and a switching-off spring pushing mechanism after the switching-off, in the process, the reverse magnetic field can demagnetize the static iron core made of the permanent magnet, the Curie temperature of the permanent magnet is lower, when the ambient temperature rises, the demagnetization effect can be generated on the permanent magnet, and therefore the potential safety hazard exists in the permanent magnet mechanism by using the permanent magnet as the static iron core.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a gas insulated switchgear which is small in size and simple to assemble.

The gas insulation switch equipment comprises a fixed seat, and a switch chamber, a mechanism chamber and a secondary wiring chamber which are arranged above the fixed seat, wherein a switch module is arranged in the switch chamber and comprises an integrated frame, and a breaker switch and an isolation grounding switch are sequentially arranged on the frame from top to bottom.

The gas insulated switchgear provided by the embodiment of the invention has at least the following beneficial effects: through with circuit breaker switch and isolation earthing switch integration on the integral type frame, reduce the volume, when assembling switch module in the equipment box, need not to assemble each part one by one, only need assemble circuit breaker switch and isolation earthing switch on the frame, again with the frame installation can, be favorable to the factory stock and simplify the assembly flow.

According to the gas insulation switch equipment provided by the embodiment of the invention, the circuit breaker switch comprises a base and an insulation cylinder arranged on the base, a cavity is arranged in the insulation cylinder, a vacuum arc extinguish chamber, an insulation pull rod and a permanent magnet operating mechanism are sequentially arranged in the cavity from top to bottom, the permanent magnet operating mechanism comprises a static iron core, a movable iron core, an operating coil and an elastic assembly, the operating coil and the elastic assembly are arranged between the static iron core and the movable iron core, and the static iron core and the movable iron core are both made of a rectangular magnetic material.

According to the gas insulation switch equipment provided by the embodiment of the invention, one side of the frame is provided with the fixed plate and the insulation support arranged on the fixed plate, the other side of the frame is provided with the contact mounting plate, a three-phase connecting row is arranged between the circuit breaker switch and the isolation grounding switch, the upper end of the three-phase connecting row is connected with the circuit breaker switch, the lower end of the three-phase connecting row is connected with the isolation grounding switch, and the middle part of the three-phase connecting row is fixed with the insulation support.

According to the gas insulated switchgear of the embodiment of the invention, the isolated grounding switch comprises a grounding copper bar, a grounding contact, a first isolated contact, a second isolated contact, an isolated knife assembly, an insulating cover, an isolated grounding operating shaft and an insulating support, wherein the grounding copper bar is arranged on the contact mounting plate, the grounding contact is arranged on the grounding copper bar, the first isolated contact is arranged at the lower end of the three-phase connecting bar, the isolated grounding operating shaft is arranged on the frame, the insulating cover is arranged on the isolated grounding operating shaft and can rotate around the isolated grounding operating shaft, the isolated knife assembly is fixed in the insulating cover, the insulating support is fixed at the bottom of the frame, and the second isolated contact is fixed on the insulating support.

According to the gas insulated switchgear of the embodiment of the present invention, the ground contact, the first isolation contact and the second isolation contact are arranged at intervals on an arc centered on the isolation ground operation axis.

According to the gas insulated switchgear of the embodiment of the invention, the insulated support comprises 2 side plates, a support bottom plate and 4 middle partition plates, wherein the side plates are respectively arranged on two sides of the support bottom plate, the side plates are in joggle joint with the support bottom plate, the middle partition plate is arranged on the support bottom plate and is positioned between the two side plates, and the middle partition plate is in joggle joint with the two side plates.

According to the gas insulated switchgear of the embodiment of the invention, the mechanism chamber is respectively provided with a manual brake separating mechanism connected with the breaker switch through a first movable seal and an isolation operating mechanism connected with an isolation grounding switch through a second movable seal from top to bottom.

According to the gas insulated switchgear provided by the embodiment of the invention, the width of the gas insulated switchgear is less than or equal to 325mm, and the length of the gas insulated switchgear is less than or equal to 800 mm.

According to the gas insulated switchgear of an embodiment of the present invention, the frame includes a front plate, a rear plate, a fixing plate, two contact mounting plates and two circuit breaker mounting plates, which are disposed between the front plate and the rear plate, respectively.

The gas insulation switch equipment further comprises a gas box, wherein a top extension sleeve, a connecting copper bar, a circuit breaker switch, an isolation grounding switch, a wire inlet guide module, a grounding guide module, a wire inlet sleeve and a pressure release valve are sequentially arranged in the vertical direction of the gas box, the upper end of the switch module is connected with the top extension sleeve through the connecting copper bar, the outer edge of the connecting copper bar is in an arc shape, the gas box is a fully-closed box body, sulfur hexafluoride gas with rated pressure is filled in the gas box, the gas box is provided with a first through hole opposite to the circuit breaker switch, a second through hole opposite to the isolation grounding switch, a gas pressure gauge fixing hole and an observation hole, and a grounding flange and a pressure release valve are arranged at the bottom of the gas box.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a gas insulated switchgear according to an embodiment of the present invention;

fig. 2 is a schematic side view of a gas insulated switchgear according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a switch module according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a permanent magnet actuator according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an insulating support according to an embodiment of the present invention;

FIG. 6 is a diagram illustrating the operation of the isolation knife assembly according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of an air box in an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a frame in an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.