CN215731114U

CN215731114U - Basin-type insulator for gas-insulated metal-enclosed switchgear

Info

Publication number: CN215731114U
Application number: CN202121181357.6U
Authority: CN
Inventors: 张建成; 赵海波; 刘斯乐
Original assignee: Hunan Changgao Electric Co ltd
Current assignee: Hunan Changgao Electric Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-02-01
Anticipated expiration: 2031-05-28

Abstract

The utility model discloses a basin-type insulator used on gas insulated metal enclosed switchgear, comprising: a disc-shaped body; the three arch, three the arch set up in the same one side of body, three be isosceles triangle distribution between the arch, and isosceles triangle's focus with the middle part coincidence of body, each bellied back all is equipped with the recess, bellied mid-mounting has the inserts. The electric field distribution is uniform, the insulation margin is high, and the insulation reliability is greatly improved. The utility model is applied to the technical field of high-voltage switch equipment.

Description

Basin-type insulator for gas-insulated metal-enclosed switchgear

Technical Field

The utility model relates to the technical field of high-voltage switch equipment, in particular to a basin-type insulator for gas-insulated metal-enclosed switch equipment.

Background

The gas-insulated metal-enclosed switchgear is a metal-enclosed switchgear and a control device, at least a part of which uses a gas above atmospheric pressure as an insulating medium. The high-voltage and ultrahigh-voltage power supply is widely applied to the high-voltage and ultrahigh-voltage fields, is also used in the ultrahigh-voltage field, and has wide application.

In the gas insulated metal enclosed switchgear, the basin-type insulator mainly plays a role in insulation and support, and has high requirements on the insulation performance and the structural strength of the basin-type insulator. In addition, in all the devices of the gas insulated metal-enclosed switch, the fault rate of the basin-type insulator can reach about 26.6%, and the fault rate of the basin-type insulator is higher than that of the basin-type insulator in the second place of all the devices of the gas insulated metal-enclosed switch, so that the basin-type insulator also needs to have better insulating property and structural strength.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the basin-type insulator for the gas insulated metal enclosed switchgear, which has the advantages of uniform electric field distribution, high insulation margin and greatly improved insulation reliability.

The technical scheme adopted by the embodiment of the utility model is as follows: a basin insulator for on gas insulated metal enclosed switchgear, includes: a disc-shaped body; the three arch, three the arch set up in same one side of body, three be isosceles triangle distribution between the arch, and isosceles triangle's focus with the center pin coincidence of body, each bellied back all is equipped with the recess, bellied center is used for installing the inserts.

The basin-type insulator used for the gas insulated metal enclosed switchgear provided by the embodiment of the utility model at least has the following beneficial effects:

1. the three bulges are distributed along the isosceles triangle, so that the bulges at the vertex angles of the isosceles triangle can be better supported, and when the pressure applied to the vertex angles of the isosceles triangle is higher, the pressure can be better uniformly distributed on each bulge, so that the integral structural performance of the basin-type insulator is better;

2. when the high-voltage bus is connected to the insert protruding from the vertex angle of the isosceles triangle, compared with the arrangement of the equilateral triangle, the electric field distribution of the scheme is more uniform, so that the insulation performance of the basin-type insulator is better;

3. the insert is arranged in the center of the bulge, the creepage distance between the inserts along the surface of the bulge is increased through the bulge so as to improve the insulating property, and meanwhile, the electric field on the surface of the body can be balanced, so that the insulating property of the basin-type insulator is better;

4. through setting up the recess at bellied back for the holistic thickness of basin formula insulator is close unanimous, and basin formula insulator is difficult for producing flaws such as gas pocket because of thickness inequality when the shaping in the mould, influences the quality of basin formula insulator.

According to some embodiments of the utility model, the body is provided with connecting holes, the connecting holes are located between the circumferential surface of the body and the protrusions, are uniformly distributed around the central axis of the body, and penetrate through two sides of the body.

According to some embodiments of the present invention, two first sealing ring grooves are respectively disposed on two sides of the body and located between the protrusion and the connecting hole.

According to some embodiments of the present invention, two second sealing ring grooves are respectively disposed on two sides of the body, and the second sealing ring grooves are located between the first sealing ring groove and the protrusion.

According to some embodiments of the utility model, a shielding ring is disposed in the body, a center of the shielding ring is concentric with a center of the body, and a distance from the shielding ring to a central axis of the body is smaller than a distance from the second sealing ring groove to the central axis of the body but larger than a distance from the insert to the central axis of the body.

According to some embodiments of the utility model, the body is provided with annular sunken platforms on two sides, and the sunken platforms are located between the second sealing ring groove and the protrusion.

According to some embodiments of the utility model, the insert is cylindrical and a reinforcing layer is provided on the outer side of the insert.

According to some embodiments of the utility model, the reinforcing layer is a plurality of reinforcing convex rings or a plurality of reinforcing ring grooves, and the axes of the reinforcing convex rings and the reinforcing ring grooves are concentric with the axis of the insert.

According to some embodiments of the utility model, the air hole sets are arranged on two sides of the body, and the air hole sets are arranged through the two sides of the body and located between the protrusions and the connecting holes.

According to some embodiments of the utility model, the set of air holes is a single air hole, the diameter of the air hole being 30 mm.

According to some embodiments of the utility model, the protrusion is in the shape of a half circular truncated cone.

According to some embodiments of the utility model, the body is made of an epoxy material.

Additional aspects and advantages of the utility model 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 utility model.

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 view of a basin insulator used in a gas insulated metal enclosed switchgear according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a basin insulator for use in a gas-insulated metal-enclosed switchgear in accordance with an embodiment of the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 2.

Reference numerals: 100-body; 110-projection; 120-grooves; 130-connecting hole; 140-a first seal ring groove; 150-a second seal ring groove; 160-a shield ring; 170-sinking the platform; 180-gas hole group; 200-an insert; 210-reinforcing layer.

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.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 and 2, in some embodiments of the present invention, a basin insulator for use in a gas insulated metal enclosed switchgear includes:

a disc-shaped body 100;

the three protrusions 110 are arranged on the same side of the body 100, the three protrusions 110 are distributed in an isosceles triangle shape, the gravity centers of the isosceles triangles coincide with the central axis of the body 100, a groove 120 is formed in the back of each protrusion 110, and the centers of the protrusions 110 are used for mounting the insert 200.

Specifically, the three protrusions 110 are distributed along the isosceles triangle, so that the protrusions 110 at the vertex angles of the isosceles triangle can be better supported, and when the pressure applied to the vertex angles of the isosceles triangle is higher, the pressure can be better uniformly distributed on each protrusion 110, so that the overall structure performance of the basin-type insulator is better.

Usually, when three protrusions 110 are disposed, an equilateral triangle is usually adopted for distribution, and after testing, it is found that the electric field distribution around the top corner connected with the high-voltage bus is very dense and is often concentrated between two protrusions 110, especially the electric field between the two bottom corners is very dense and the bending amplitude is large at the other two bottom corners not connected with the high-voltage bus.

And through being connected to the inserts 200 of the isosceles triangle apex angle position arch 110 with the high voltage bus for the distance between two base angles of isosceles triangle increases, in order to weaken intensive electric field between two base angles, makes the electric field more natural when distributing, and is more even, in order to make basin formula insulator's insulating properties better.

The insert 200 is arranged at the center of the protrusion 110, the creepage distance between the inserts 200 along the surface of the protrusion 110 is increased through the protrusion 110 to improve the insulation performance, and meanwhile, the electric field on the surface of the body 100 can be balanced, so that the insulation performance of the basin-type insulator is better; through setting up recess 120 at the back of arch 110 for the holistic thickness of basin formula insulator is close unanimous, and basin formula insulator is difficult for producing flaws such as gas pocket because of thickness inequality when the shaping in the mould, influences the quality of basin formula insulator.

In addition, in the embodiment, the outer diameter of the body 100 of the basin-shaped insulator is 825mm, and the length of the insert 200 is 119 mm.

Referring to fig. 1, in some embodiments of the present invention, the body 100 is provided with connection holes 130, and the connection holes 130 are located between the circumferential surface of the body 100 and the protrusion 110, are uniformly distributed around the central axis of the body 100, and penetrate both sides of the body 100. The provision of the connection hole 130 facilitates the fixation of the insulator.

In addition, in the present embodiment, the number of the connection holes 130 is 30, and the reference circle diameter thereof is 775mm, which is uniformly distributed around the central axis of the body 100.

Referring to fig. 1 and 2, in some embodiments of the present invention, two first sealing ring grooves 140 are respectively disposed on two sides of the body 100 and located between the protrusion 110 and the connection hole 130. By arranging the first sealing ring groove 140 to install the sealing strip, the sealing performance of the basin-type insulator is better.

In addition, in the present embodiment, the center circle diameter of the first seal ring groove 140 is 733 mm.

Referring to fig. 1 and 2, in some embodiments of the present invention, two second sealing ring grooves 150 are respectively disposed on two sides of the body 100, and the second sealing ring grooves 150 are located between the first sealing ring groove 140 and the protrusion 110.

Specifically, the second sealing ring groove 150 is provided, and the depth of the second sealing ring groove 150 is greater than that of the first sealing ring groove 140, so that the sealing effect of the second sealing ring groove 150 is better, and the overall sealing performance of the basin-type insulator is improved.

In addition, in the present embodiment, the diameter of the center circle of the second seal ring groove 150 is 709 mm.

Referring to fig. 1, 2 and 3, in some embodiments of the present invention, a shielding ring 160 is disposed in the body 100, a center of the shielding ring 160 is concentric with a center of the body 100, and a distance from the shielding ring 160 to a central axis of the body 100 is smaller than a distance from the second seal ring groove 150 to the central axis of the body 100, but is larger than a distance from the insert 200 to the central axis of the body 100.

Specifically, the shielding ring 160 isolates the insert 200 in the middle of the body 100 from the connection at the edge of the body 100, so as to isolate the interference between the two, which is safer to use.

Further, in the present embodiment, the diameter of the center circle of the shield ring 160 is 692 mm.

Referring to fig. 1, 2 and 3, in some embodiments of the present invention, the body 100 is provided with annular sunken platforms 170 at both sides, and the sunken platforms 170 are located between the second seal ring groove 150 and the protrusion 110. The sinker 170 is provided to increase the surface area of the body 100 to further improve the reliability of insulation.

In addition, in the embodiment, the ring diameter of the sinking platform 170 is 677mm, the depth of the sinking platform 170 is 4mm, the distance between the two sinking platforms 170 is 72mm, and the sinking platform 170 is in a round transition of R5.

Referring to fig. 1, in some embodiments of the present invention, an insert 200 has a cylindrical shape, and a reinforcing layer 210 is provided on an outer side of the insert 200. By arranging the reinforcing layer 210, the connection between the insert 200 and the protrusion 110 is tighter, and the insert 200 is not easy to fall off from the protrusion 110 due to external force.

Referring to fig. 2, in some embodiments of the present invention, the reinforcing layer 210 is a plurality of reinforcing protrusions or a plurality of reinforcing grooves, and the axes of the reinforcing protrusions and the reinforcing grooves are concentric with the axis of the insert 200. The insert 200 is snapped into the body 100 by providing a reinforcement collar or reinforcement groove 120 to provide a tighter connection between the insert 200 and the protrusion 110.

Referring to fig. 1, in some embodiments of the present invention, a plurality of air hole sets 180 are disposed on both sides of the body 100, and the air hole sets 180 are disposed through both sides of the body 100 and between the protrusion 110 and the connection hole 130.

Specifically, the air hole groups 180 are three in number and uniformly distributed around the central axis of the body 100, and the air hole groups 180 are located between the two protrusions 110. And the set of air holes 180 is provided to balance the pressure on both sides of the body 100, and simultaneously, to facilitate the rapid pressure transfer and the gas communication, thereby reducing the destructive power and releasing a certain pressure when the pressure suddenly rises due to an accident.

In addition, in the present embodiment, the air hole group 180 is a single air hole, the diameter of the air hole is 30mm, the pitch circle diameter of the three air holes is 550mm, and the three air holes are uniformly distributed around the central axis of the body 100.

Referring to fig. 1 and 2, in some embodiments of the utility model, the protrusion 110 has a semicircular table shape. To increase the outer surface area of the protrusion 110 and improve the insulation performance.

In some embodiments of the present invention, the body 100 is made of an epoxy material. The epoxy resin has low cost, good insulating property and wide application.

The present invention is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims

1. A basin insulator for use on a gas insulated metal enclosed switchgear, comprising:

a disc-shaped body (100);

three arch (110), three arch (110) set up in the same one side of body (100), three be isosceles triangle between arch (110) and distribute, and isosceles triangle's focus is located the middle part of body (100), each the back of arch (110) all is equipped with recess (120), the mid-mounting of arch (110) has inserts (200).

2. The basin insulator for use in a gas insulated metal enclosed switchgear as claimed in claim 1, wherein: the connecting structure is characterized in that connecting holes (130) are formed in the body (100), the connecting holes (130) are located between the circumferential surface of the body (100) and the protrusions (110), are uniformly distributed around the central shaft of the body (100), and penetrate through two sides of the body (100).

3. The basin insulator for use in a gas insulated metal enclosed switchgear as claimed in claim 2, wherein: two first sealing ring grooves (140) are respectively arranged on two sides of the body (100) and are positioned between the protrusion (110) and the connecting hole (130).

4. The basin insulator for use in a gas insulated metal enclosed switchgear as claimed in claim 3, wherein: two second sealing ring grooves (150) are respectively formed in two sides of the body (100), and the second sealing ring grooves (150) are located between the first sealing ring grooves (140) and the protrusions (110).

5. The basin insulator for use in gas-insulated metal-enclosed switchgear according to claim 4, wherein: be equipped with shielding ring (160) in body (100), the center of shielding ring (160) with the center of body (100) sets up with one heart, just shielding ring (160) extremely the distance of body (100) center pin is less than second seal ring groove (150) extremely the distance of body (100) center pin, but is greater than inserts (200) extremely the distance of body (100) center pin.

6. The basin insulator for use in gas-insulated metal-enclosed switchgear according to claim 4, wherein: the both sides of body (100) are equipped with annular heavy platform (170), heavy platform (170) are located second seal ring groove (150) with between arch (110).

7. The basin insulator for use in a gas-insulated metal-enclosed switchgear according to any one of claims 1 to 6, wherein: the insert (200) is cylindrical, and a reinforcing layer (210) is arranged on the outer side face of the insert (200).

8. The basin insulator for use in a gas insulated metal enclosed switchgear as claimed in claim 7, wherein: the reinforcing layer (210) is a plurality of reinforcing convex rings or a plurality of reinforcing ring grooves, and the reinforcing convex rings and the axes of the reinforcing ring grooves are concentrically arranged with the axes of the inserts (200).

9. The basin insulator for use in a gas-insulated metal-enclosed switchgear according to any of claims 2 to 6, characterized in that: a plurality of air hole groups (180) are arranged on two sides of the body (100), and the air hole groups (180) penetrate through the two sides of the body (100) and are located between the protrusions (110) and the connecting holes (130).

10. The basin insulator for use in a gas insulated metal enclosed switchgear as claimed in claim 9, wherein: the air hole group (180) is a single air hole, and the diameter of the air hole is 30 mm.