CN216312517U

CN216312517U - Charging and discharging fixing clamp for GIS combined electrical apparatus

Info

Publication number: CN216312517U
Application number: CN202122776492.1U
Authority: CN
Inventors: 李辉; 武帅克; 李朋; 周淑慧; 冯祎; 杨硕; 张迪; 许宜敏; 陈照亮; 孙玮皓
Original assignee: State Grid Henan Electric Power Co Yiyang County Power Supply Co; State Grid Corp of China SGCC
Current assignee: State Grid Henan Electric Power Co Yiyang County Power Supply Co; State Grid Corp of China SGCC
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-04-15
Anticipated expiration: 2031-11-15

Abstract

The utility model provides a charging and discharging fixing clamp for a GIS combined electrical apparatus, which comprises a clamp plate A, a clamp plate B, guide rods and a propeller, wherein the clamp plate A and the clamp plate B are both of flat plate structures with U-shaped open slots, two groups of guide rods vertical to the clamp plate A are fixedly arranged on the left side surface of the clamp plate A, the left end of each group of guide rods is provided with the propeller, the clamp plate B is arranged between the clamp plate A and the propeller, the clamp plate B is parallel to the clamp plate A, the two groups of guide rods penetrate through the clamp plate B, the guide rods are sleeved with springs A, and the springs A are positioned between the clamp plate A and the clamp plate B; the propeller comprises a propelling rod, a handle, a force applying rod, a propelling sheet and a releasing sheet. The utility model can quickly realize the butt joint and fixation of the inflating port and the inflating head of the GIS combined electrical apparatus, safely inflate and deflate the combined electrical apparatus SF6, and has the characteristics of high use efficiency and good safety performance.

Description

Charging and discharging fixing clamp for GIS combined electrical apparatus

Technical Field

The utility model relates to a power maintenance device, in particular to a maintenance device of a GIS combined electrical apparatus, and specifically relates to a charging and discharging gas fixing clamp of the GIS combined electrical apparatus.

Background

The sulfur hexafluoride enclosed type combined electrical apparatus is internationally called Gas Insulated Switchgear (Gas Insulated Switchgear) and is abbreviated as GIS. The primary equipment except the transformer in a transformer substation, including a circuit breaker, an isolating switch, a grounding switch, a voltage transformer, a current transformer, a lightning arrester, a bus, a cable terminal, an inlet and outlet bushing and the like, is organically combined into a whole through optimized design; the GIS combined electrical apparatus adopts sulfur hexafluoride gas with excellent insulating property as an insulating and arc extinguishing medium, so that the volume of a transformer substation can be greatly reduced, miniaturization is realized, and the GIS combined electrical apparatus has the advantages of easy maintenance and high safety performance, and is gradually and widely applied to modern electric power construction.

The daily maintenance of the GIS combined electrical appliance mainly ensures the air pressure and the air tightness of the gas. Taking a ZF12-126(L) type combined electrical apparatus as an example, SF6 in the equipment is easy to leak due to aging of sealing rings of various parts; the circuit breaker is locked due to low SF6 pressure, and the circuit breaker cannot be normally switched on and off when equipment fails; in another case, even if the circuit breaker is not locked, under the condition of low SF6 pressure, arc can not be effectively extinguished when the combined electric circuit breaker and the disconnecting switch are opened and closed, and equipment explosion can be caused in serious cases.

At present, when SF6 gas is supplied to the GIS combined electrical apparatus, due to the design of the gas charging opening, the gas charging head needs to be aligned with the gas charging opening, and then the gas charging head is firmly fixed on the gas charging opening by three screws; in the process of fastening the screws, each screw of the three screws needs to be twisted for one circle, and force is circularly applied to the three screws in a balanced manner (otherwise, the inclination angle of the inflation head is too large, and the seal of the inflation port can be damaged after the inflation head enters the inflation port), so that the inner part of the inflation head is pushed in place, and the air can be supplied only when the air path is smooth; in the process of installing and removing the inflation head, because the inflation head and the inflation port are sealing devices, the tolerance is small, and the situation that the screws cannot be detached, even the screws are broken and slide due to slight unbalance of the three screws is easily caused, so that the working time is prolonged or the next air supply is influenced.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model aims to provide a fixing clamp for charging and discharging of a GIS combined apparatus, which realizes the quick butt joint and fixation of an inflation head and an inflation inlet by using the principle similar to a glue gun under the condition of not changing the structure of the inflation inlet and the inflation head of the GIS combined apparatus, has safe and reliable butt joint process, labor-saving and quick charging and discharging, is simple to operate and convenient to carry, and can greatly improve the work efficiency of SF6 charging and discharging.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a charging and discharging fixing clamp of a GIS combined electrical apparatus comprises a clamping plate A, a clamping plate B, a guide rod and a propeller,

the clamping plate A and the clamping plate B are both of a flat plate structure with U-shaped open slots, two groups of guide rods perpendicular to the clamping plate A are fixedly arranged on the left side face of the clamping plate A, a propeller is arranged at the left end of each group of guide rods, the clamping plate B is arranged between the clamping plate A and the propeller, the clamping plate B is parallel to the clamping plate A, the two groups of guide rods penetrate through the clamping plate B, springs A are sleeved on the guide rods, and the springs A are located between the clamping plate A and the clamping plate B;

the propeller comprises a propelling rod, a handle, a force applying rod, a propelling sheet and a releasing sheet;

the handle comprises a support and a handheld part, the support is composed of an upper arm, a lower arm, a left arm and a right arm, the right arm is connected with the guide rod, a guide hole A is formed in the middle of the right arm, a guide hole B is formed in the middle of the left arm, the push rod penetrates through the guide hole A and the guide hole B, and the right end of the push rod is used for abutting against the clamping plate B; the handheld part is fixedly connected to the left end of the lower part of the lower arm.

The propelling piece is positioned between the left arm and the right arm of the bracket, sleeved on the propelling rod and used for driving the propelling rod to move towards the right side; a spring B is arranged between the propelling piece and the right arm, and the spring B is sleeved on the propelling rod and used for resetting the propelling piece;

the middle part of the stress application rod is hinged on the lower arm, and the upper end of the stress application rod is abutted against the left side of the propelling piece and used for driving the propelling piece to move towards the right side.

The left end of the upper arm of the support is fixedly connected with a hinge seat, the middle part of the release sheet is sleeved on the push rod, and the upper end of the release sheet is hinged on the hinge seat; the hinge seat is provided with a hinge hole with the axis vertical to the push rod, and one side of the hinge hole is provided with a limiting surface with the lower end inclined to the left for limiting the rotation angle of the release sheet; and a spring C is arranged between the release sheet and the right arm of the support, and the spring C is sleeved on the push rod and used for resetting the release sheet.

The opening directions of the U-shaped open slot of the splint A and the U-shaped open slot of the splint B are consistent, the two groups of guide rods are respectively positioned at two sides of the U-shaped open slot, and the number of each group of guide rods is two; the upper end and the lower end of the right arm of the bracket are respectively connected with the same group of guide rods.

The right end of the guide rod is provided with an external thread and is fixed on the clamping plate A through a nut, and the left end of the guide rod is welded or in threaded connection with the right arm of the support.

The right end of the propelling rod is fixedly connected with a propelling disc, and the propelling disc is circular.

The utility model has the beneficial effects that: the utility model uses the driving principle of a glass glue gun for reference, uses two clamping plates to butt joint and fix the inflation inlet and the inflation head of the GIS combined electrical apparatus, has stable and safe connection process due to the use of two-side propulsion driving, does not easily incline the inflation head, does not damage the inflation inlet and the inflation head, and can quickly separate the inflation head from the inflation inlet after inflation is finished, so that the combined electrical apparatus SF6 can be quickly and safely inflated and deflated, and the utility model has the characteristics of high use efficiency and good safety performance.

Drawings

Fig. 1 is a top view of the overall structure of the present invention.

Fig. 2 is a front view of the overall structure of the present invention.

Fig. 3 is a front view of the handle and the hinge base.

Fig. 4 is a schematic perspective view of the clamp a, the clamp B and the guide rod.

Fig. 5 is a schematic diagram of the connection of the present invention to a device.

In the figure: 1. the device comprises splints A, 2, splints B, 3, a guide rod, 4, a pushing rod, 5, a handle, 6, a stressing rod, 7, a pushing sheet, 8, a releasing sheet, 9, springs A, 10, springs B, 11, springs C,12, a pushing disc, 13, an inflation inlet, 14 and an inflation head;

51. support, 52, handheld portion, 53, articulated seat, 511, upper arm, 512, lower arm, 513, left arm, 514, right arm, 531, articulated hole, 532, spacing face, 533, guiding hole B, 541, guiding hole A.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, a fixing clamp for charging and discharging air of a GIS combiner includes a clamp plate a1, a clamp plate B2, guide rods 3 and a propeller, wherein the clamp plate a1 and the clamp plate B2 are both flat plate structures with U-shaped open slots, two groups of guide rods 3 perpendicular to the clamp plate a1 are fixedly arranged on the left side surface of the clamp plate a1, the left end of each group of guide rods 3 is provided with one propeller for pushing the clamp plate B2 to move towards the clamp plate a1, the clamp plate B2 is arranged between the clamp plate a1 and the propeller, the clamp plate B2 is parallel to the clamp plate a1, the two groups of guide rods 3 both penetrate through the clamp plate B2, the guide rods 3 are sleeved with springs a9, and the springs a9 are both located between the clamp plate a1 and the clamp plate B2;

the propeller comprises a propelling rod 4, a handle 5, a force applying rod 6, a propelling piece 7 and a releasing piece 8,

the handle 5 comprises a bracket 51 and a handheld part 52, the bracket 51 is composed of an upper arm 511, a lower arm 512, a left arm 513 and a right arm 514, wherein the right arm 514 is connected with the guide rod 3, a guide hole A541 is arranged in the middle of the right arm 514, a guide hole B533 is arranged in the middle of the left arm 513, the push rod 4 is arranged in the guide hole A541 and the guide hole B533 in a penetrating manner, and the right end of the push rod is used for abutting against a clamping plate B2; the hand-held portion 52 is fixedly connected to the lower left end of the lower arm 512.

The propelling piece 7 is positioned between the left arm 513 and the right arm 514 of the bracket 51, sleeved on the propelling rod 4 and used for driving the propelling rod 4 to move towards the right side; a spring B10 is arranged between the propelling piece 7 and the right arm 514, and the spring B10 is sleeved on the propelling rod 4 and used for resetting the propelling piece 7;

the middle part of the stress application rod 6 is hinged on the lower arm 512 of the bracket 51, and the upper end of the stress application rod 6 is abutted against the left side of the propelling piece 7 and is used for driving the propelling piece 7 to move towards the right side.

The left end of the upper arm 511 of the bracket 51 is fixedly connected with a hinged seat 53, the middle part of the release sheet 8 is sleeved on the push rod 4, and the upper end of the release sheet is hinged on the hinged seat 53; the hinge seat 53 is provided with a hinge hole 531 the axis of which is vertical to the push rod 4, and one side of the hinge hole 531 is provided with a limiting surface 532 the lower end of which inclines leftwards, so as to limit the rotating angle of the release sheet 8; a spring C11 is arranged between the release sheet 8 and the right arm 514, and the spring C11 is sleeved on the push rod 4 and used for resetting the release sheet 8.

The structure uses for reference the driving principle of the glass glue gun, but is slightly different, and the specific introduction is as follows:

when the lower end of the boosting rod 6 is pulled leftwards, the upper end of the boosting rod 6 rotates, the propelling piece 7 is driven to move rightwards on the propelling rod 4, the upper end of the propelling piece 7 is inclined leftwards due to the stress of the lower end of the propelling piece 7, the friction force F1 exists between the propelling piece 7 and the propelling rod 4, the upper end of the releasing piece 8 is inclined rightwards under the action of the spring C11, the friction force F2 exists between the releasing piece 8 and the propelling rod 4, the F2 is greater than the elastic force of the spring A9, the F1 is greater than the sum of the elastic forces of the F2 and the spring A9, the propelling rod 4 moves rightwards and the clamp plate B2 is driven to approach to the clamp plate A1; when the force applying rod 6 is loosened, the push rod 4 is not moved under the action of F2, the push sheet 7 is changed into a vertical state under the action of the spring B10, F1 is reduced or even disappears, the push sheet 7 is reset on the push rod 4 to the left, and the force applying rod 6 is driven to reset; pulling the force application rod 6 for a plurality of times to enable the push rod 4 to drive the clamping plate B2 to gradually approach the clamping plate A1; if the push rod is required to move leftwards, at the moment, the release sheet 8 is pressed to enable the lower end of the release sheet to move rightwards, when the release sheet 8 is erected, F2 is reduced or even disappears, because the push sheet 7 is also in an erected state at the moment, F1 is reduced or even disappears, even if the spring A9 does not exist, the push rod 4 is not stressed, and can be pulled away easily; whereas in the present invention spring a9 is present, the push rod 4 will automatically spring back.

As shown in fig. 5, the application method of the present invention is as follows: when in inflation, after a dustproof cap of an inflation inlet 13 of the GIS combined electrical equipment is removed, an inflation head 14 of the inflation equipment is placed into a U-shaped groove of a clamping plate B2, then the U-shaped groove of a clamping plate A1 is clamped on the inflation inlet 13 of the GIS combined electrical equipment, a handle 5 is respectively held by two hands, a force applying rod 6 is pressed, after the inflation head 14 is aligned with the inflation inlet 13, the direction can be corrected, the force applying rod 6 is continuously pressed, when the clamping plate A and the clamping plate B are gradually close, the front end of the inflation head 14 enters the inflation inlet 13, an air valve in the inflation inlet 13 is pushed open, at the moment, one hand can be loosened, and an inflation switch is opened for inflation; after inflation is finished, the inflation switch is closed, the handles 5 are respectively held by the two hands, the release sheet 8 is pressed by the thumb, due to the change of the angle of the release sheet 8, the friction force between the push rod 4 and the release sheet 8 is reduced or even disappears, the clamp plate B2 can be far away from the clamp plate A1 by pulling the release sheet backwards a little, and the front end of the inflation head 14 is separated from the inflation inlet 13.

The opening directions of the U-shaped open slot of the splint A1 and the U-shaped open slot of the splint B2 are consistent, the two groups of guide rods 3 are respectively positioned at two sides of the U-shaped open slot, and the number of each group of guide rods 3 is two; the upper and lower ends of the right arm 514 of the bracket 51 are respectively connected with the same group of guide rods 3. Specifically, in order to stabilize the propelling process, the two sets of guide bars 3 are symmetrical about the center of the U-shaped open slot.

The right end of the guide rod 3 is provided with external threads and is fixed on a clamping plate A1 through a nut, and the left end of the guide rod 3 is welded or in threaded connection with the right arm 514 of the bracket 51.

The right end of the propelling rod 4 is fixedly connected with a propelling disc 12, and the propelling disc 12 is circular. Specifically, the material of the propulsion disc can be selected from aluminum alloy or polyethylene, and the purpose of the propulsion disc is mainly to increase the stress area and stabilize the propulsion process.

In conclusion, the fixing clamp for charging and discharging air of the GIS combined electrical apparatus provided by the utility model can effectively improve the SF6 charging and discharging efficiency of the GIS combined electrical apparatus, saves the maintenance time of electric power facilities and has certain economic benefit.

The present invention is not described in detail in the prior art.

Claims

1. The utility model provides a GIS combined electrical apparatus fills fixed fixture of gassing, includes splint A (1), splint B (2), guide bar (3) and propeller, characterized by: the clamping plate A (1) and the clamping plate B (2) are of a flat plate structure with U-shaped open slots, two groups of guide rods (3) perpendicular to the clamping plate A (1) are fixedly arranged on the left side face of the clamping plate A (1), a propeller is arranged at the left end of each group of guide rods (3), the clamping plate B (2) is arranged between the clamping plate A (1) and the propeller, the clamping plate B (2) is parallel to the clamping plate A (1), the two groups of guide rods (3) penetrate through the clamping plate B (2), springs A (9) are sleeved on the guide rods (3), and the springs A (9) are located between the clamping plate A (1) and the clamping plate B (2);

the propeller comprises a propelling rod (4), a handle (5), a force applying rod (6), a propelling sheet (7) and a releasing sheet (8);

the handle (5) comprises a support (51) and a handheld part (52), the support (51) is composed of an upper arm (511), a lower arm (512), a left arm (513) and a right arm (514), the right arm (514) is connected with the guide rod (3), a guide hole A (541) is formed in the middle of the right arm (514), a guide hole B (533) is formed in the middle of the left arm (513), the push rod (4) penetrates through the guide hole A (541) and the guide hole B (533), and the right end of the push rod is used for abutting against the clamping plate B (2); the hand-held part (52) is fixedly connected with the left end of the lower part of the lower arm (512).

2. The GIS combined electrical apparatus inflation/deflation fixing clamp as claimed in claim 1, wherein: the propelling piece (7) is positioned between the left arm (513) and the right arm (514) of the bracket (51), sleeved on the propelling rod (4) and used for driving the propelling rod (4) to move towards the right side; a spring B (10) is arranged between the propelling piece (7) and the right arm (514), and the spring B (10) is sleeved on the propelling rod (4) and used for resetting the propelling piece (7);

the middle part of the stress application rod (6) is hinged on the lower arm (512) of the bracket (51), and the upper end of the stress application rod (6) is abutted against the left side of the propelling piece (7) and is used for driving the propelling piece (7) to move towards the right side.

3. The GIS combined electrical apparatus inflation/deflation fixing clamp as claimed in claim 1, wherein: the left end of the upper arm (511) of the bracket (51) is fixedly connected with a hinged seat (53), the middle part of the release sheet (8) is sleeved on the push rod (4), and the upper end of the release sheet is hinged on the hinged seat (53); the hinge seat (53) is provided with a hinge hole (531) with the axis vertical to the push rod (4), and one side of the hinge hole (531) is provided with a limiting surface (532) with the lower end inclined to the left for limiting the rotating angle of the release sheet (8); be equipped with spring C (11) between release piece (8) and right arm (514), spring C (11) cover is established on push rod (4) for the restoration of release piece (8).

4. The GIS combined electrical apparatus inflation/deflation fixing clamp as claimed in claim 1, wherein: the opening directions of the U-shaped open slot of the splint A (1) and the U-shaped open slot of the splint B (2) are consistent, the two groups of guide rods (3) are respectively positioned at two sides of the U-shaped open slot, and the number of each group of guide rods (3) is two; the upper end and the lower end of a right arm (514) of the bracket (51) are respectively connected with the same group of guide rods (3).

5. The GIS combined electrical apparatus inflation/deflation fixing clamp as claimed in claim 1, wherein: the right end of the guide rod (3) is provided with an external thread and is fixed on the clamping plate A (1) through a nut, and the left end of the guide rod (3) is welded or in threaded connection with the right arm (514) of the bracket (51).

6. The GIS combined electrical apparatus inflation/deflation fixing clamp as claimed in claim 1, wherein: the right end of the propelling rod (4) is fixedly connected with a propelling disc (12), and the propelling disc (12) is circular.