Shell assembly based on vacuum arc-extinguishing chamber

Abstract

The utility model relates to the field of vacuum extinguish chambers, in particular to a shell assembly based on a vacuum arc extinguish chamber, which comprises a shell, a vacuum arc extinguish chamber, a vacuum arc extinguish chamber and a vacuum arc extinguish chamber, the shielding piece comprises a shell and a shielding cylinder, the shielding piece is arranged in the shell in a sleeved mode, the shell is provided with a first opening, a first cavity and a second opening, the first opening and the second opening are both communicated with the first cavity, the side wall forming the first cavity is further provided with an annular abutting part, and the annular abutting part is arranged on the side wall of the first cavity. The outer wall of the shielding cylinder is provided with an annular abutting portion which is close to the second opening, the outer wall of the shielding cylinder is further provided with an annular protruding block, and the annular protruding block is arranged to be capable of making contact with the side, close to the first opening, of the annular abutting portion so as to limit the position of the shielding cylinder. According to the utility model, the advantages of no need of welding, convenient installation and high practicability of the shielding cylinder can be realized by effectively utilizing the structural configuration of the shielding cylinder.

Description

Technical Field

[0001] The present application relates to the field of vacuum fire extinguishing chambers, and more specifically to a housing assembly based on a vacuum arc extinguishing chamber. Background Art

[0002] In the prior art, the shielding tube is usually welded to the fixed ribs of the porcelain shell. Therefore, in order to weld the porcelain shell and the shielding tube, a layer of metal coating needs to be applied to the fixed ribs of the porcelain shell to facilitate the user to weld the shielding tube to the fixed ribs of the porcelain shell. However, the vacuum interrupter will increase its own temperature during operation, that is, a large amount of high-temperature metal vapor will be generated when the moving contact and the static contact are disconnected. Due to the different expansion coefficients of various materials, it is easy to cause the welding between the fixed ribs of the porcelain shell and the shielding tube to break, which makes it impossible to define the position of the shielding tube, and then causes damage. Therefore, it is necessary to improve our vacuum interrupter in view of the above technical problems.

[0003] Therefore, there is a need to provide a housing assembly based on a vacuum arc extinguishing chamber, which has the advantages of no welding required for a shielding tube, convenient installation, and high practicality. Summary of the invention

[0004] The main purpose of the present application is to provide a shell assembly based on a vacuum arc chamber, wherein the shell assembly based on the vacuum arc chamber can effectively utilize its own structural configuration to achieve the advantages of a shielding tube that does not require welding and is easy to install.

[0005] Another object of the present application is to provide a shell assembly based on a vacuum arc extinguishing chamber, wherein the shell assembly based on the vacuum arc extinguishing chamber includes a shell and a shielding cylinder, the shielding member is sleeved in the shell, and the shell has a first opening, a first cavity and a second opening, the first opening and the second opening are both connected to the first cavity, the side wall forming the first cavity also has an annular abutment portion, the annular abutment portion is close to the second opening, the outer wall of the shielding cylinder also has an annular protrusion, the annular protrusion is configured to be able to contact with a side of the annular abutment portion close to the first opening, thereby limiting the position of the shielding cylinder, wherein the annular abutment portion has two oppositely arranged mounting grooves, the annular protrusion has two insertion blocks, the two insertion blocks are respectively placed in the two mounting grooves, specifically, the insertion blocks are configured to be squeezed into the mounting groove, thereby limiting the position of the insertion blocks, or a connecting hole corresponding to the mounting groove is opened on the outer wall of the shell, and a connecting rod is arranged in the two connecting holes, and the ends of the two connecting rods close to each other are respectively threadedly connected with the two insertion blocks, thereby limiting the position of the insertion blocks.

[0006] Another object of the present application is to provide a shell assembly based on a vacuum arc chamber, wherein the shell assembly based on the vacuum arc chamber has a simple structure and is easy to operate, does not involve complex manufacturing processes and expensive materials, has high economy, and is easy to promote and use.

[0007] In order to achieve at least one of the above-mentioned invention objectives, the present application provides a housing assembly based on a vacuum interrupter, wherein the housing assembly based on the vacuum interrupter comprises:

[0008] a housing; and

[0009] A shielding cylinder, the shielding member is sleeved in the shell, and the shell has a first opening, a first cavity and a second opening, the first opening and the second opening are both connected to the first cavity, the side wall forming the first cavity also has an annular abutment, the annular abutment is close to the second opening, the outer wall of the shielding cylinder also has an annular protrusion, the annular protrusion is configured to be able to contact with a side of the annular abutment close to the first opening, so as to limit the position of the shielding cylinder.

[0010] In one or more embodiments of the present application, the shielding tube has a third opening, a second cavity and a fourth opening, the third opening and the fourth opening are both connected to the second cavity, and the third opening and the fourth opening are also connected to the first cavity.

[0011] In one or more embodiments of the present application, a side of the annular protrusion close to the annular abutting portion is flat.

[0012] In one or more embodiments of the present application, the wall surface of the annular protrusion close to the shielding cylinder is spaced a predetermined distance from the outer wall of the shielding cylinder.

[0013] In one or more embodiments of the present application, the side of the annular protrusion close to the annular abutment portion also has two insertion blocks, the two insertion blocks are arranged opposite to each other and are spaced a predetermined distance apart, and the side of the annular abutment portion close to the annular protrusion also has two oppositely arranged mounting grooves, and the two insertion blocks are respectively arranged in the two mounting grooves.

[0014] In one or more embodiments of the present application, the outer wall of the shell also has two relatively arranged connecting holes, the two connecting holes are respectively connected to the two mounting grooves, and the two connecting holes are also connected to the outside, and each of the insertion blocks has an assembly hole, and the two assembly holes correspond one-to-one to the two connecting holes.

[0015] In one or more embodiments of the present application, the shell assembly based on the vacuum arc chamber also includes two connecting rods, which are movably arranged in the two connecting holes, and the ends of the two connecting rods close to each other are threadedly connected to the two assembly holes.

[0016] In one or more embodiments of the present application, the length of the connecting rod is smaller than the depth of the connecting hole.

[0017] In one or more embodiments of the present application, each of the insertion blocks has a support portion on both sides, and the two support portions are in contact with two side walls forming the mounting groove, thereby effectively limiting the position of the insertion block, and at the same time, the cross-sectional width of the insertion block is smaller than the width of the mounting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] These and / or other aspects and advantages of the present application will become clearer and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0019] Figure 1 The figure shows a structural schematic diagram of a housing assembly based on a vacuum interrupter.

[0020] Figure 2 Pictured Figure 1 A is an enlarged view of the middle image. DETAILED DESCRIPTION

[0021] The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustrative purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0022] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0023] Although ordinals such as "first," "second," and the like will be used to describe various components, those components are not limited herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more associated listed items.

[0024] The terms used herein are only used for the purpose of describing various embodiments and are not intended to be limiting. As used herein, singular forms are intended to also include plural forms, unless the context clearly indicates an exception. In addition, it will be understood that the terms "including" and / or "having" when used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0025] Schematic diagram of a housing assembly based on a vacuum interrupter

[0026] refer to Figure 1 to Figure 2 According to a preferred embodiment of the utility model, a shell assembly based on a vacuum arc chamber is provided. It should be noted that in the prior art, the shielding tube is usually welded to the fixed ribs of the porcelain shell. Therefore, in order to weld the porcelain shell and the shielding tube together, a layer of metal coating needs to be applied to the fixed ribs of the porcelain shell to facilitate the user to weld the shielding tube to the fixed ribs of the porcelain shell. However, the temperature of the vacuum arc chamber will increase during operation, that is, a large amount of high-temperature metal vapor will be generated when the moving contact and the static contact are disconnected. Due to the different expansion coefficients of various materials, it is easier to cause the welding point between the fixed ribs of the porcelain shell and the shielding tube to break, which makes it impossible to limit the position of the shielding tube, and then causes damage. Therefore, it is necessary to improve our vacuum arc chamber based on the above technology. The utility model is explained in detail below to facilitate the understanding of the utility model.

[0027] Specifically, the shell 10 assembly based on the vacuum arc chamber includes a shell 10 and a shielding tube 20, the shielding member is sleeved in the shell 10, and the shell 10 has a first opening 101, a first cavity 102 and a second opening 103, the first opening 101 and the second opening 103 are both connected to the first cavity 102, and the first opening 101 and the second opening 103 are also connected to the outside.

[0028] Furthermore, the side wall forming the first cavity 102 also has an annular abutment portion 11, which is close to the second opening 103, and those skilled in the art should understand that the annular abutment portion 11 is configured to cooperate with the shielding tube 20, that is, to support the shielding tube 20.

[0029] Specifically, the shielding cylinder 20 is placed in the first cavity 102, and the shielding cylinder 20 has a third opening, a second cavity and a fourth opening, the third opening and the fourth opening are both connected to the second cavity, and the third opening and the fourth opening are also connected to the first cavity 102. It is worth mentioning that the outer wall of the shielding cylinder 20 also has an annular protrusion 21, and the annular protrusion 21 is configured to be able to contact with the side of the annular abutment portion 11 close to the first opening 101, thereby limiting the position of the shielding cylinder 20. It should also be noted that the side of the annular protrusion 21 close to the annular abutment portion 11 is a plane, so that the annular protrusion 21 can better fit the side of the annular abutment portion 11 close to the first opening 101. In addition, the annular protrusion 21 is close to the wall surface of the shielding tube 20 and is spaced a predetermined distance from the outer wall of the shielding tube 20. Those skilled in the art should understand that when the temperature in the first cavity 102 rises, since the expansion coefficient of metal is greater than that of ceramic material, if the annular protrusion 21 is close to the wall surface of the shielding tube 20 and fits the outer wall of the shielding tube 20, it will cause the shielding tube 20 to damage the shell 10. Reserving a gap between the annular protrusion 21 and the shielding tube 20 can effectively solve such problems.

[0030] It should be noted that the annular protrusion 21 has two insertion blocks 211 on one side close to the annular abutment portion 11, and the two insertion blocks 211 are arranged opposite to each other and spaced apart by a predetermined distance. The annular abutment portion 11 has two installation grooves 1101 on one side close to the annular protrusion 21, and the two insertion blocks 211 are respectively arranged in the two installation grooves 1101.

[0031] It is worth mentioning that the outer wall of the housing 10 also has two oppositely arranged communication holes 104, the two communication holes 104 are respectively connected to the two mounting grooves 1101, and the two communication holes 104 are also connected to the outside. The connection between the insert block 211 and the annular protrusion 21 can be implemented as a welding connection, and each insert block 211 has an assembly hole 21101, and the two assembly holes 21101 correspond to the two communication holes 104 one by one.

[0032] In addition, the shell 10 assembly based on the vacuum arc chamber also includes two connecting rods 30, which are movably arranged in the two connecting holes 104, and the ends of the two connecting rods 30 close to each other are respectively threadedly connected with the two assembly holes 21101, so that the position of the insertion block 211 is limited by the connecting rods 30. It should be noted that the length of the connecting rod 30 is less than the depth of the connecting hole 104, so that the end of the connecting rod 30 away from the insertion block 211 can be placed in the connecting hole 104, and the user can rotate the connecting rod 30 through an external tool, so that the end of the connecting rod 30 can be matched with or separated from the corresponding assembly hole 21101. The utility model adopts the above-mentioned connection structure to avoid the problem that the existing welding method is more likely to cause cracks in the welding due to the different expansion coefficients of various materials under the influence of high temperature, thereby making it impossible for the shielding tube 20 to be effectively fixed on the ceramic shell. In addition, each of the two sides of the insert block 211 has a support portion 2111, and the two support portions 2111 are in contact with two side walls forming the installation groove 1101, thereby effectively limiting the position of the insert block 211, and the cross-sectional width of the insert block 211 is smaller than the width of the installation groove 1101. In addition, a rubber sleeve 40 is also sleeved on the outer wall of the housing 10.

[0033] In summary, the shell assembly based on the vacuum arc chamber according to the embodiment of the present application is explained, which provides the shell assembly based on the vacuum arc chamber with advantages such as no need for welding of the shielding tube, convenient installation, and high practicality.

[0034] It is worth mentioning that in the embodiment of the present application, the housing assembly based on the vacuum interrupter has a simple structure, does not involve complex manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the housing assembly based on the vacuum interrupter provided by the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0035] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A housing assembly based on a vacuum interrupter, characterized in that: The housing assembly based on the vacuum interrupter comprises: a housing; and A shielding cylinder is sleeved in the shell, and the shell has a first opening, a first cavity and a second opening, the first opening and the second opening are both connected to the first cavity, the side wall forming the first cavity also has an annular abutment, the annular abutment is close to the second opening, the outer wall of the shielding cylinder also has an annular protrusion, the annular protrusion is configured to contact with a side of the annular abutment close to the first opening, so as to limit the position of the shielding cylinder.

2. A shell assembly based on a vacuum arc chamber according to claim 1, wherein the shielding tube has a third opening, a second cavity and a fourth opening, the third opening and the fourth opening are both connected to the second cavity, and the third opening and the fourth opening are also connected to the first cavity. 3 . The vacuum interrupter-based housing assembly according to claim 1 , wherein a side of the annular protrusion close to the annular abutment portion is a plane. 4 . The housing assembly based on the vacuum interrupter according to claim 1 , wherein the wall surface of the annular protrusion close to the shielding cylinder is spaced apart from the outer wall of the shielding cylinder by a predetermined distance.

5. According to claim 1, a shell assembly based on a vacuum arc extinguishing chamber, wherein the side of the annular protrusion close to the annular abutment portion also has two insertion blocks, the two insertion blocks are arranged opposite to each other and are spaced a predetermined distance apart, and the side of the annular abutment portion close to the annular protrusion also has two oppositely arranged mounting grooves, and the two insertion blocks are respectively arranged in the two mounting grooves.

6. According to the shell assembly based on the vacuum arc extinguishing chamber according to claim 5, the outer wall of the shell also has two communicating holes arranged opposite to each other, the two communicating holes are respectively connected with the two mounting grooves, and the two communicating holes are also connected with the outside, and each of the insertion blocks has an assembly hole, and the two assembly holes correspond to the two communicating holes one by one.

7. A shell assembly based on a vacuum arc chamber according to claim 6, wherein the shell assembly based on a vacuum arc chamber further comprises two connecting rods, the two connecting rods are movably arranged in the two connecting holes respectively, and the ends of the two connecting rods close to each other are threadedly connected to the two assembly holes respectively. 8 . The vacuum interrupter-based housing assembly according to claim 7 , wherein the length of the connecting rod is smaller than the depth of the communicating hole.

9. According to the shell assembly based on the vacuum arc chamber according to claim 8, each of the two sides of the insertion block has a supporting portion, and the two supporting portions are in contact with two side walls forming the mounting groove, thereby effectively limiting the position of the insertion block, and at the same time, the cross-sectional width of the insertion block is smaller than the width of the mounting groove.

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