CN113140423B - Three-phase common-box switch shell and isolated grounding combined switch - Google Patents

Abstract

The invention relates to a three-phase common-box switch shell and an isolated grounding combined switch. The three-phase common-box switch shell comprises: the axes of the three barrel parts are parallel and coplanar, and two adjacent barrel parts are radially communicated; the connecting part is used for connecting the adjacent barrel parts and comprises axial parts opposite to each other in the axial direction of the barrel parts and radial parts opposite to each other in the radial direction of the barrel parts, the radial parts extend along the axial direction of the barrel parts, the section of the radial parts perpendicular to the axial line of the barrel parts is a radial section, and the radial section is in a concave arc shape, so that the radial parts and the barrel parts form a wave structure. The arrangement of the wave structure increases the surface area of the three-phase common-box switch shell, improves the heat dissipation efficiency of the three-phase common-box switch shell, and the section of the radial part perpendicular to the axis of the cylinder body part is in an inward concave arc shape.

Description

A three-phase common box switch housing and isolation grounding combination switch

Technical Field

The invention relates to a three-phase common box switch housing and an isolating grounding combined switch.

Background technique

As an important component of GIS, the isolation and grounding combination switch is becoming increasingly miniaturized and integrated. In order to improve product competitiveness, the number of high-voltage three-phase common box structures has gradually increased in recent years. The three-phase common box switchgear has a three-phase conductor loop inside, which causes the three-phase common box switchgear to generate high heat, have a large shell volume, and is difficult to design in a miniaturized form.

When GIS is operating normally, the isolation and grounding combination switch needs to carry and transmit a certain current. The flow performance is one of the important performances of the isolation and grounding combination switch. The main factors affecting the flow performance are the heat generation power of the internal conductor of the isolation and grounding combination switch and the heat dissipation power of the shell. In order to improve the flow performance, on the one hand, it is necessary to limit the heat generation of the conductor. The main measures are to increase the conductor size or replace the conductor material with low resistivity. On the other hand, it is necessary to improve the heat dissipation efficiency and improve heat conduction, heat convection and heat radiation. Increasing the conductor size or using materials with low resistivity will increase the cost of the isolation and grounding combination switch, resulting in a decrease in the economic applicability of the product. The conventional approach to improving the heat dissipation efficiency is to increase the surface area of the shell. For example, a cylindrical shell can be used. However, a cylindrical shell will result in a larger shell size, which in turn leads to a larger size and volume of the entire product.

Summary of the invention

The object of the present invention is to provide a three-phase common box switch housing to solve the technical problem of the large size and volume of the cylindrical housing in the prior art; correspondingly, the object of the present invention is also to provide an isolating grounding combination switch to solve the technical problem of the large size and volume of the cylindrical housing in the prior art resulting in large product size and volume.

The three-phase common-box switch housing of the present invention adopts the following technical scheme: the three-phase common-box switch housing includes: a cylindrical part, which is provided with three, the axes of the three cylindrical parts are parallel and coplanar, and two adjacent cylindrical parts are radially penetrated; a connecting part, connecting adjacent cylindrical parts, including axial parts opposite to each other in the axial direction of the cylindrical part and radial parts opposite to each other in the radial direction of the cylindrical part, the radial part extends along the axial direction of the cylindrical part, and the cross-section of the radial part perpendicular to the axis of the cylindrical part is a radial cross-section, and the radial cross-section is an inwardly concave arc, so that the radial part and the cylindrical part form a wave structure, so as to reduce the wall thickness of the shell.

The beneficial effects of the present invention are as follows: the connecting part of the three-phase common box shell includes a radial part and an axial part, the radial part and the cylindrical part form a wave structure to increase the surface area of the three-phase common box switch shell and improve the heat dissipation efficiency of the three-phase common box switch shell, the adjacent cylindrical parts are connected by a connecting part, the cross-section of the radial part perpendicular to the axis of the cylindrical part is a concave arc, compared with the cylindrical shell structure in the prior art, the three-phase common box shell structure of the present invention can reduce the size and volume of the three-phase common box switch shell; and under the condition of the same strength, the setting of the wave structure can reduce the wall thickness of the three-phase common box switch shell, reduce consumables, and thus reduce the cost of the shell.

Furthermore, the cross section of the axial part parallel to the axis of the barrel part is in a concave arc shape. The above structural arrangement can increase the surface area of the three-phase common box switch housing and improve the heat dissipation efficiency of the three-phase common box switch housing.

Furthermore, in the two opposite radial parts on the connecting part, the arc radius of the radial cross section of at least one radial part is the same as the radius of the cylindrical part. The above structural arrangement can improve the structural stability of the three-phase common box switch housing.

Furthermore, each cylinder part is provided with a moving contact connection flange and a stationary contact connection flange, the axis of the moving contact connection flange is arranged perpendicularly to the axis of the stationary contact connection flange, and the axis of the stationary contact connection flange is arranged coaxially with the axis of the cylinder part. The above structural arrangement helps to reduce the floor space occupied by the entire three-phase common box switchgear.

Furthermore, the movable contact connection flange is integrally connected to the corresponding cylinder part through a sleeve, and the sleeve is connected to the radial part in an arc transition. The above structural arrangement can increase the size of the movable contact connection flange on the cylinder part, which is convenient for fixing and installing the movable contact assembly.

The isolating and grounding combination switch of the present invention adopts the following technical scheme: the isolating and grounding combination switch comprises a shell, which is a three-phase common box switch shell, and the shell comprises: three cylindrical parts, the axes of the three cylindrical parts are parallel and coplanar, and two adjacent cylindrical parts are radially connected; a connecting part, connecting adjacent cylindrical parts, including axial parts opposite to each other in the axial direction of the cylindrical parts and radial parts opposite to each other in the radial direction of the cylindrical parts, the radial part extends along the axial direction of the cylindrical parts, and the cross section of the radial part perpendicular to the axis of the cylindrical parts is the radial cross section, and the radial cross section is in an inwardly concave arc shape, so that the radial part and the cylindrical part form a wave structure, so as to reduce the wall thickness of the shell.

The beneficial effects of the present invention are as follows: in the shell of the isolating and grounding combination switch, the connecting part includes a radial part and an axial part, the radial part and the cylindrical part form a wave structure to increase the surface area of the shell and improve the heat dissipation efficiency of the shell, the adjacent cylindrical parts are connected by the connecting part, the cross section of the radial part perpendicular to the axis of the cylindrical part is in a concave arc shape, and compared with the cylindrical shell structure in the prior art, the shell structure of the isolating and grounding combination switch of the present invention can reduce the size and volume of the shell, thereby reducing the size and volume of the entire isolating and grounding combination switch; and under the condition of the same strength, the setting of the wave structure can reduce the wall thickness of the shell, reduce consumables, and thus reduce the cost of the shell.

Furthermore, the cross section of the axial portion parallel to the axis of the cylindrical portion is in a concave arc shape. The above structural arrangement can increase the surface area of the housing and improve the heat dissipation efficiency of the three-phase common box switch housing.

Furthermore, in the two opposite radial parts on the connecting part, the arc radius of the radial cross section of at least one radial part is the same as the radius of the cylindrical part. The above structural arrangement can improve the structural stability of the shell.

Furthermore, each cylinder part is provided with a moving contact connection flange, a stationary contact connection flange and a grounding terminal connection flange, the axis of the moving contact connection flange is arranged perpendicularly to the axis of the stationary contact connection flange, and the axis of the stationary contact connection flange is arranged coaxially with the axis of the cylinder part. The above structural arrangement helps to reduce the floor space occupied by the entire isolating and grounding combination switch.

Furthermore, the movable contact connection flange is integrally connected to the corresponding cylinder part through a sleeve, and the sleeve is connected to the radial part in an arc transition. The above structural arrangement can increase the size of the movable contact connection flange on the cylinder part, which is convenient for fixing and installing the movable contact assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a cross-sectional structure of a three-phase switch housing of a rectangular parallelepiped structure in the prior art, perpendicular to its length direction;

FIG2 is a schematic diagram of a cross-sectional structure of a cylindrical three-phase switch housing in the prior art, perpendicular to its axis direction;

3 is a schematic cross-sectional structure diagram of the vertical cylindrical portion of the three-phase common box switch housing of the isolating and grounding combination switch in the embodiment 1 of the present invention;

4 is a schematic diagram of the three-phase common box switch housing of the isolating and grounding combination switch at one angle in Embodiment 1 of the isolating and grounding combination switch of the present invention;

5 is a schematic diagram of the three-phase common box switch housing of the isolating and grounding combination switch in Embodiment 1 of the present invention from another angle;

6 is a front view of a three-phase common box switch housing of an isolating and grounding combination switch in Embodiment 1 of the isolating and grounding combination switch of the present invention;

FIG7 is a top view of the three-phase switch housing in FIG6;

FIG8 is a bottom view of the three-phase switch housing in FIG6;

FIG9 is a rear view of the three-phase common box switch housing in FIG6;

In FIG1 : 101 - three-phase common box switch housing, 102 - moving contact connection flange, 103 - operating mechanism connection flange;

In FIG2 : 201 - three-phase common box switch housing, 202 - moving contact connection flange, 203 - operating mechanism connection flange;

In Figures 3 to 9: 1-cylindrical part, 2-moving contact connecting flange, 3-static contact connecting flange, 4-grounding terminal connecting flange, 5-operating mechanism connecting flange, 6-first radial part, 7-second radial part, 8-sleeve, 9-axial part.

Detailed ways

In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

Specific embodiment 1 of the isolation and grounding combination switch of the present invention:

Before introducing the isolating and grounding combination switch of the present invention, the isolating and grounding combination switch in the prior art is briefly introduced: the isolating and grounding combination switch in the prior art includes a shell, as shown in FIG1 , the shell is a three-phase common box switch shell 101, the three-phase common box switch shell 101 is a rectangular structure as a whole, and is provided with three moving contact connecting flanges 102 arranged with axes in parallel, and is also provided with an operating mechanism connecting flange 103, and the axis of the operating mechanism connecting flange 103 is arranged perpendicular to the axis of the moving contact connecting flange 102.

In the prior art, in order to improve the heat dissipation efficiency of the shell, the three-phase common box switch shell 201 is generally arranged with a cylindrical structure. As shown in Figure 2, the moving contact connecting flange 202 and the operating mechanism connecting flange 203 are both arranged to protrude from the outer circumference of the cylindrical structure to increase the surface area of the three-phase common box switch shell 201. However, the shell size of the cylindrical structure is relatively large, which leads to a larger size and volume of the entire isolation and grounding combination switch and the entire GIS equipment.

In order to reduce the overall size of the three-phase common box switch housing, as shown in Figures 3 and 4, in the isolating and grounding combination switch of the present invention, the three-phase common box switch housing adopts three cylindrical parts 1 arranged side by side, and the adjacent cylindrical parts 1 are connected by an axial part 9 and a radial part. The cross-section of the radial part perpendicular to the axis of the cylindrical part is an inwardly concave arc, so that the radial part and the cylindrical part 1 form a wave structure with an inner concave surface and an outer convex surface. Compared with the shell of the cylindrical structure in the prior art, the setting of the wave structure on the three-phase common box switch shell reduces the size and volume of the shell, which is conducive to the miniaturized design of the three-phase common box switch equipment.

Specifically, in this embodiment, as shown in Figures 3 to 9, the isolating and grounding combination switch includes a shell, and the shell is a three-phase common box switch shell. As shown in Figures 3 to 8, the shell includes three cylindrical parts 1, and the three cylindrical parts 1 are arranged in sequence at intervals in the axial direction perpendicular to the cylindrical part 1. The axes of the three cylindrical parts 1 are parallel and coplanar, and adjacent cylindrical parts 1 are penetrated in the radial direction of the cylindrical part 1 so that the interiors of the three cylindrical parts 1 are connected.

As shown in Fig. 6 to Fig. 9, the shell further includes a connecting portion connected between adjacent cylindrical portions 1, the connecting portion includes an axial portion 9 and a radial portion, and the axial portion 9 and the radial portion are connected by an arc transition to form an annular structure located between adjacent cylindrical portions 1. The radial portions are arranged relative to each other in the radial direction of the cylindrical portion 1, and are extended and arranged in the axial direction of the cylindrical portion 1, and the axial portions 9 are arranged relative to each other in the axial direction of the cylindrical portion 1.

In this embodiment, as shown in FIG. 4 to FIG. 7 , each cylindrical portion 1 is provided with a moving contact connection flange 2, a stationary contact connection flange 3 and a grounding terminal connection flange 4. The moving contact connection flange 2 is used for fixedly connecting the moving contact. The axis of the moving contact connection flange 2 is arranged perpendicularly to the axis of the cylindrical portion 1, and the moving contact connection flanges 2 on the three cylindrical portions 1 are oriented in the same direction. The stationary contact connection flange 3 is used for fixedly connecting the stationary contact. The stationary contact connection flange 3 is arranged at one end of the cylindrical portion 1. The grounding terminal connection flange 4 is used for fixedly connecting the grounding terminal. The grounding terminal connection flange 4 is arranged at the other end of the corresponding cylindrical portion 1. The cylindrical portion 1 at the end of the three cylindrical portions 1 is provided with an operating mechanism connection flange 5 facing the outside of the shell. The operating mechanism connection flange 5 is used to support and connect the operating mechanism.

In this embodiment, as shown in FIG3 , the cross section of the radial part perpendicular to the axis of the cylindrical part 1 is a radial cross section, and the shape of the radial cross section is an inwardly concave arc that is concave toward the inside of the cylindrical part 1, and the radial part is smoothly connected with the cylindrical part 1. The radial part includes a first radial part 6 that is on the same radial side of the cylindrical part 1 as the moving contact connection flange 2, and also includes a second radial part 7 that is arranged opposite to the moving contact connection flange 2 in the radial direction of the cylindrical part 1. The radius of the inwardly concave arc of the second radial part 7 is equal to the radius of the cylindrical part 1, so that the radial part and the cylindrical part 1 form a wave structure on the opposite side of the moving contact connection flange 2. Under the same structural strength as the cylindrical shell of the prior art, the setting of the wave structure can reduce the wall thickness of the shell, reduce the shell consumables, and thus reduce the cost of the shell. Moreover, since the radius of the inwardly concave arc of the second radial part 7 is equal to the radius of the cylindrical part 1, the stability of the wave structure strength can be improved, thereby improving the stability of the entire shell structure.

In this embodiment, the setting of the wave structure can increase the surface area of the shell and improve the heat dissipation efficiency of the shell. Compared with the structure of the cylindrical shell in the prior art, the shell in this embodiment reduces the size and volume of the shell, thereby reducing the size and volume of the entire isolating and grounding combination switch, which helps to achieve a miniaturized design of the isolating and grounding combination switch.

In this embodiment, as shown in Figures 4 to 6 and Figure 9, the moving contact connecting flange 2 is integrally connected to the corresponding cylindrical portion 1 through the sleeve 8, and the sleeve 8 is connected to the first radial portion 6 in an arc transition to increase the size of the moving contact connecting flange 2 to facilitate the fixation and installation of the moving contact assembly.

In this embodiment, as shown in FIG. 8 , the cross section of the axial portion 9 parallel to the axis of the cylindrical portion 1 is recessed toward the inside of the cylindrical body to form an inwardly concave arc, thereby increasing the outer surface of the shell and further improving the heat dissipation efficiency of the shell.

Specific embodiment 2 of the isolation and grounding combination switch of the present invention:

The difference between it and Example 1 is that in the connecting part, the cross section of the axial part parallel to the axis of the cylindrical part is a straight structure, and it is connected to the outer peripheral surface of the cylindrical part and the radial part through an arc transition.

Specific embodiment 3 of the isolation and grounding combination switch of the present invention:

The difference between it and Example 1 is that the radius of the concave arc of the first radial portion is equal to the radius of the cylindrical portion, so that the radial portion and the cylindrical portion also form a wavy structure on the same side of the flange connected to the moving contact, which can further reduce the shell cost, improve the stability of the entire shell structure, and help to improve the heat dissipation efficiency of the shell, thereby helping to achieve a miniaturized design of the isolating and grounding combination switch.

Specific embodiment 4 of the isolation and grounding combination switch of the present invention:

The difference between it and embodiment 1 is that on the cylinder part, the axial direction of the moving contact connecting flange is arranged perpendicularly to the axial direction of the stationary contact connecting flange, and the axial direction of the moving contact connecting flange is arranged coaxially with the axial direction of the cylinder part.

Specific embodiment of the three-phase switch housing of the present invention:

The three-phase common box switch housing is used in an isolating and grounding combination switch, and the specific structure of the three-phase common box switch housing is the same as the structure of the housing in specific embodiments 1 to 4 of the above-mentioned isolating and grounding combination switch, which will not be repeated here.

In other embodiments, the three-phase common box switch housing may also be the housing of an isolating switch, which differs from the three-phase common box switch housing in that a grounding terminal connection flange is not provided in the housing used for the isolating switch; or in other embodiments, the three-phase common box switch housing may be used in a circuit breaker, and a grounding terminal connection flange is not provided in the housing of the three-phase common box switch used in a circuit breaker; or in other embodiments, the three-phase common box switch housing may also be the housing of an isolating grounding and quick grounding switch, and according to actual application requirements, the housing of the isolating grounding and quick grounding switch needs to be adaptively modified on the basis of the housing of the above-mentioned isolating grounding switch.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims (10)

1. A three-phase switch housing, characterized by comprising: There are three cylinder parts, the axes of the three cylinder parts are parallel and coplanar, and two adjacent cylinder parts are radially connected; The connecting part connects adjacent cylindrical parts, including axial parts opposite to each other in the axial direction of the cylindrical part and radial parts opposite to each other in the radial direction of the cylindrical part. The radial part extends along the axial direction of the cylindrical part. The cross section of the radial part perpendicular to the axis of the cylindrical part is the radial cross section. The radial cross section is in an inwardly concave arc shape, so that the radial part and the cylindrical part form a wave structure to reduce the wall thickness of the shell. 2. The three-phase switch housing according to claim 1 is characterized in that the cross-section of the axial portion parallel to the axis of the cylindrical portion is in an inwardly concave arc shape. 3. The three-phase switch housing according to claim 1 is characterized in that, in the two opposite radial parts on the connecting part, the arc radius of the radial cross section of at least one radial part is the same as the radius of the cylindrical part. 4. The three-phase common box switch housing according to any one of claims 1 to 3 is characterized in that a moving contact connecting flange and a stationary contact connecting flange are provided on each cylindrical part, the axis of the moving contact connecting flange is arranged perpendicular to the axis of the stationary contact connecting flange, and the axis of the stationary contact connecting flange is arranged coaxially with the axis of the cylindrical part. 5. The three-phase switch housing according to claim 4 is characterized in that the moving contact connecting flange is integrally connected with the corresponding cylindrical part through a sleeve, and the sleeve is connected with the radial part in a circular arc transition. 6. An isolating and grounding combination switch, comprising a housing, the housing being a three-phase common box switch housing, characterized in that the housing comprises: There are three cylinder parts, the axes of the three cylinder parts are parallel and coplanar, and two adjacent cylinder parts are radially connected; The connecting part connects adjacent cylindrical parts, including axial parts opposite to each other in the axial direction of the cylindrical part and radial parts opposite to each other in the radial direction of the cylindrical part. The radial part extends along the axial direction of the cylindrical part. The cross section of the radial part perpendicular to the axis of the cylindrical part is the radial cross section. The radial cross section is in an inwardly concave arc shape, so that the radial part and the cylindrical part form a wave structure to reduce the wall thickness of the shell. 7. The isolating and grounding combination switch according to claim 6, characterized in that the cross section of the axial portion parallel to the axis of the cylindrical portion is in a concave arc shape. 8. The isolating and grounding combination switch according to claim 6, characterized in that, in the two opposite radial parts on the connecting part, the arc radius of the radial cross section of at least one radial part is the same as the radius of the cylindrical part. 9. The isolating and grounding combination switch according to any one of claims 6 to 8 is characterized in that a moving contact connecting flange, a stationary contact connecting flange and a grounding terminal connecting flange are provided on each cylindrical part, the axis of the moving contact connecting flange is arranged perpendicularly to the axis of the stationary contact connecting flange, and the axis of the stationary contact connecting flange is arranged coaxially with the axis of the cylindrical part. 10. The isolating and grounding combination switch according to claim 9, characterized in that the moving contact connection flange is integrally connected to the corresponding cylinder part through a sleeve, and the sleeve is connected to the radial part in an arc transition.