CN210926854U - Connection device and GIS equipment for dry casing - Google Patents

Abstract

The utility model discloses a dry-type bushing connection device and GIS equipment, which are used for connecting the dry-type bushing and an insulator. The utility model comprises: a six-way casing; The three upper end interfaces of the body are coplanarly arranged; each upper end interface is provided with a conversion conductor, and the conversion conductor is connected with the inserts of the insulator in one-to-one correspondence; the connection conductor arranged in the upper end interface connects the upper end of the conductor with the dry bushing The conductors are detachably connected one-to-one, and the connecting conductors and the conversion conductors are detachably connected one-to-one; the busbar, the busbar is connected to the upper end interface of the six-way housing and the dry bushing, and the conductor of the dry bushing passes through The busbar is connected to the connecting conductor. The three dry-type bushings are installed on the same six-way shell, which is a common box design, which can simplify the structure of the connecting device, make the structure simpler and more compact, and reduce the occupied space of the GIS equipment.

Description

Connection device and GIS equipment for dry casing

technical field

The utility model relates to the technical field of electrical components, in particular to a connection device for dry-type bushings and GIS equipment.

Background technique

Gas-insulated metal-enclosed switchgear, referred to as GIS, is a complete set of combined electrical appliances that use SF6 gas as insulation and arc extinguishing medium. It mainly includes high-voltage electrical components such as circuit breakers, isolation grounding combination switches, fast grounding switches, current transformers, voltage transformers, lightning arresters, inlet and outlet bushings or cable terminals. It can be used in various power plants and substations in AC power systems of different voltage levels. Because the equipment has the characteristics of small footprint, less space, not affected by external environmental conditions, no noise and radio interference, safe and reliable operation and less maintenance workload, it is especially suitable for urban substations and enterprises with tight land use. It is used in substations, mountain hydropower stations and areas with serious pollution.

Among them, the bushing is one of the important components in the gas-insulated metal-enclosed combined electrical equipment (referred to as GIS), which reliably connects the overhead busbar with the GIS equipment.

At present, the solution for applying dry casing to GIS is a sub-box structure design, that is, three dry casings are installed in different casings, which makes the overall GIS equipment occupy a large space.

Therefore, how to provide a connection device for a dry casing so as to reduce the overall space occupied by the GIS equipment is a technical problem to be solved urgently in the art.

Utility model content

In view of this, the purpose of the present invention is to provide a connection device for a dry casing, so as to reduce the overall occupied space of the GIS equipment. Another object of the present invention is to provide a GIS device having the above-mentioned dry-type casing connection device.

To achieve the above object, the utility model provides the following technical solutions:

A dry-type bushing connection device for connecting the dry-type bushing and an insulator, comprising:

A six-way housing, the lower end interface of the six-way housing is connected to the insulator, and the three upper end interfaces of the six-way housing are coplanarly arranged; a conversion conductor is arranged in each of the upper end interfaces, and the The conversion conductor is connected with the insert of the insulator in one-to-one correspondence;

a connection conductor arranged in the upper end interface, the upper end of the connection conductor is detachably connected to the conductor of the dry-type bushing in a one-to-one correspondence, and the connection conductor is detachably connected to the conversion conductor in a detachable one-to-one correspondence;

A busbar, the busbar is connected to the upper end interface of the six-way housing and the dry-type bushing, and the conductor of the dry-type bushing passes through the busbar and is connected to the connection conductor.

Preferably, in the above connection device, the conversion conductor includes:

a first conversion conductor, one end of the first conversion conductor is connected with the insert of the insulator, and the other end extends into the upper end interface, and the first conversion conductor is a curved structure;

A second conversion conductor, one end of the second conversion conductor is fixedly connected with the first conversion conductor, and the other end is detachably plugged with the connecting conductor.

Preferably, in the above connection device, the second conversion conductor located in the middle of the second conversion conductors is arranged perpendicular to the insulator, and the second conversion conductors located on both sides of the second conversion conductors are arranged with the middle second conversion conductor. The included angle between the conversion conductors is all 45°.

Preferably, in the above connection device, the second conversion conductor has a plug port capable of being plugged into the connection conductor.

Preferably, in the above-mentioned connection device, the connection conductor is of a T-shaped structure, and the diameter of the end of the connection conductor close to the dry bushing is larger than the diameter of the end of the connection conductor close to the conversion conductor.

Preferably, in the above connecting device, the side ports on both sides of the six-way housing are respectively encapsulated with an adsorbent and a sensor.

A GIS equipment includes a connection device for dry casing, wherein the connection device for dry casing is the connection device for dry casing described in any one of the above.

It can be seen from the above technical solutions that the connection device for dry-type bushings disclosed by the present utility model is used for connecting dry-type bushings and insulators, including: a six-way casing and a busbar, connecting three dry-type bushings together. The pipes are installed on the same six-way shell, which is a common box design, which can simplify the structure of the connecting device, make the structure simpler and more compact, and reduce the occupied space of the GIS equipment.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description It is only an embodiment of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative efforts.

1 is a schematic structural diagram of a GIS device disclosed in an embodiment of the present utility model;

FIG. 2 is a schematic structural diagram of a six-way housing disclosed in an embodiment of the present invention.

Detailed ways

In view of this, the core of the present invention is to disclose a connection device of a dry casing, so as to reduce the overall occupied space of GIS equipment. Another core of the present invention is to disclose a GIS device having the above-mentioned dry casing connection device.

In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1 and FIG. 2 , the present invention discloses a dry-type bushing connection device for connecting the dry-type bushing 10 and the insulator 1 , including: a six-way housing 4 and a busbar 9 . Wherein, the six-way housing 4 is a structure with six interfaces, the lower end interface of the six-way housing 4 is connected to the insulator 1, and the three upper end interfaces of the six-way housing 4 are coplanarly arranged. The interfaces are arranged along the circumference of the six-way housing 4 in a fan-shaped arrangement. Each upper end interface is provided with a conversion conductor, and the conversion conductor is connected with the inserts of the insulator 1 one-to-one. Specifically, the insulator 1 has three inserts arranged in an equilateral triangle, and the conversion conductors are connected to the inserts one by one. After the corresponding connection, the three conversion conductors are respectively inserted into the corresponding upper-end ports. Since the above-mentioned three upper-end ports are coplanarly arranged, the three conversion conductors are in a curved structure. In addition, there is a connecting conductor 8 disposed in the upper end interface. The upper end of the connecting conductor 8 is detachably connected to the conductor of the dry bushing 10 in a one-to-one correspondence, and the connecting conductor 8 is detachably connected to the conversion conductor in a one-to-one correspondence. The connection between the dry-type bushing 10 and the insert of the insulator 1 is realized by connecting the conductor 8, and it is easy to disassemble by means of plugging. The above-mentioned busbar 9 is connected to the upper end interface of the six-way housing 4 and the dry bushing 10 , and the conductor of the dry bushing 10 is connected to the connecting conductor 8 through the busbar 9 . In the present application, three dry-type bushings 10 are installed on the same six-way housing 4, which is a common box design, which can simplify the structure of the connecting device, make the structure simpler and more compact, and reduce the occupied space of GIS equipment. .

In a preferred embodiment, the above-mentioned conversion conductors include: a first conversion conductor 2 and a second conversion conductor 3 . One end of the first conversion conductor 2 is connected to the insert of the insulator 1, and the other end extends into the upper end interface. The first conversion conductor 2 is a curved structure; one end of the second conversion conductor 3 is fixedly connected to the first conversion conductor 2, and the other end is fixedly connected to the first conversion conductor 2. Removable plug-in with connecting conductor 8. The specific bending shape of the first conversion conductors 2 can be set according to different needs, as long as the coplanarity of the first conversion conductors 2 is ensured. The centerlines of the installed dry-type bushings 10 are in the same plane after the above-mentioned transformation of the internal conversion conductors of the connecting device, so as to further reduce the occupied space. The second conversion conductor 3 is plugged with the connecting conductor 8 for easy installation.

The middle second conversion conductors of the second conversion conductors 3 are arranged perpendicular to the insulator 1 , and the included angles between the second conversion conductors on both sides of the second conversion conductors 3 and the middle second conversion conductors are both 45°. A specific positional relationship of the second conversion conductors 3 is disclosed here. In practice, the arrangement of the second conversion conductors 3 can be set according to different needs, and all are within the protection scope.

In a specific embodiment, the second conversion conductor 3 has a plug port that can be plugged with the connection conductor 8 . The shape and size of the plug port need to be matched and designed according to the shape and size of the connection conductor 8 , which is not specifically limited here. .

The connecting conductor 8 in the present application has a T-shaped structure, and the diameter of the end of the connecting conductor 8 close to the dry bushing 10 is larger than the diameter of the end of the connecting conductor 8 close to the conversion conductor. The "T" type structure ensures the uniformity and stability of the internal electric field. The connecting conductor 8 is connected with the conductor of the dry-type bushing 10 through a screw. In practice, when the dry-type bushing 10 needs to be replaced, it is only necessary to pull out the connecting conductor 8 from the second conversion conductor 3, and replace it with the dry-type bushing 10. The thread of the type sleeve 10 is matched to the connecting conductor 8. Due to the different conductor lengths and interface sizes of the dry bushings 10 of different specifications, by adjusting the length of the busbar 9 and the size of the threaded holes on the upper end of the connecting conductors 8, the application of the dry bushings to the three-phase common box GIS equipment 11 is not only solved, but also the Moreover, the connection between the dry bushing 10 of any specification and the three-phase common box GIS equipment 11 is realized.

The interior of the six-way housing 4 and the bus bar 9 is filled with high-pressure gas, and the side ports on both sides of the six-way housing 4 are respectively encapsulated with an adsorbent 7 and a sensor. Specifically, the cover plate 6 is fixed on the first side port of the six-way housing 4 through a standard connector, and an adsorbent 7 is installed inside it. The adsorbent 7 ensures that the micro-water content of the high-pressure gas in the six-way housing 4 is qualified. The monitoring cover plate 5 is fixed on the second side port of the six-way housing 4. The monitoring cover plate 5 can be installed with partial discharge sensors or density and micro-water pressure sensors. Gas pressure and micro water content.

The connection device disclosed above has various installation forms. The three dry bushings 10 can be installed on the three-phase common box GIS equipment 11 in a vertical state, or can be installed on the three-phase common box GIS equipment 11 in a horizontal state. Those skilled in the art It can be installed according to different needs, and all are within the scope of protection.

In addition, the present application also discloses a GIS equipment, including a connection device for a dry casing, wherein the connection device for the dry casing is the connection device for the dry casing disclosed in the above embodiments, therefore, it has the The GIS equipment of the connection device of the dry casing also has all the above technical effects, which will not be repeated here.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A dry bushing connection device for connecting a dry bushing (10) to an insulator (1), comprising:

the lower end interface of the six-way shell (4) is connected with the insulator (1), and three upper end interfaces of the six-way shell (4) are arranged in a coplanar manner; each upper end port is internally provided with a conversion conductor, and the conversion conductors are correspondingly connected with the inserts of the insulators (1) one by one;

the connecting conductors (8) are arranged in the upper end interface, the upper ends of the connecting conductors (8) are detachably connected with the conductors of the dry type sleeve (10) in a one-to-one correspondence mode, and the connecting conductors (8) are detachably connected with the conversion conductors in a one-to-one correspondence mode;

the bus tube (9), the bus tube (9) is connected with the upper end interface of the six-way shell (4) and the dry-type sleeve (10), and the conductor of the dry-type sleeve (10) passes through the bus tube (9) and is connected with the connecting conductor (8).

2. The connection device of claim 1, wherein the transition conductor comprises:

one end of the first conversion conductor (2) is connected with the insert of the insulator (1), the other end of the first conversion conductor (2) extends into the upper end interface, and the first conversion conductor (2) is of a bent structure;

and one end of the second conversion conductor (3) is fixedly connected with the first conversion conductor (2), and the other end of the second conversion conductor (3) is detachably connected with the connecting conductor (8) in an inserting manner.

3. Connecting device according to claim 2, characterized in that the second transition conductor in the middle of the second transition conductors (3) is arranged perpendicular to the insulator (1), and the angle between the second transition conductors on both sides and the second transition conductor in the middle of the second transition conductors (3) is 45 °.

4. Connection device according to claim 2, characterized in that the second switching conductor (3) is provided with a plug-in opening which can be plugged in with the connection conductor (8).

5. The connection arrangement according to claim 1, characterized in that the connection conductor (8) is of a T-shaped construction and that the diameter of the end of the connection conductor (8) near the dry bushing (10) is larger than the diameter of the end of the connection conductor (8) near the transition conductor.

6. The connection device according to claim 1, characterized in that the side ports of the six-way housing (4) on both sides are respectively encapsulated with an adsorbent (7) and a sensor.

7. GIS device comprising a connection device for dry bushings, characterized in that the connection device for dry bushings is a connection device for dry bushings according to any of claims 1-6.

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