Vacuum arc-extinguishing chamber with good heat dissipation performance

Abstract

The utility model relates to the technical field of vacuum arc extinguish chambers, in particular to a vacuum arc extinguish chamber with good heat dissipation performance, which comprises a shell and a conducting rod combination, the shell is provided with a vacuum cavity, the conducting rod combination comprises a static conducting rod assembly and a movable conducting rod assembly, the static conducting rod assembly is fixedly arranged on the shell, and the movable conducting rod assembly is fixedly arranged on the shell. The movable conducting rod assembly is arranged on the shell in a sliding mode, the opposite ends of the static conducting rod assembly and the movable conducting rod assembly extend into the vacuum cavity, and at least one static conducting rod assembly or one movable conducting rod assembly is provided with a heat dissipation channel which is communicated with the outside and not communicated with the vacuum cavity. By arranging the heat dissipation channel communicated with the outside, a refrigerant can continuously enter the heat dissipation channel to absorb heat and is discharged from the heat dissipation channel, so that interaction between the refrigerant and the outside is realized, and the heat dissipation performance is better.

Description

Technical Field

[0001] The present application relates to the technical field of vacuum interrupter chambers, and more specifically to a vacuum interrupter chamber with good heat dissipation performance. Background Art

[0002] The vacuum interrupter is the core component of the medium and high voltage power switch. Through the insulation of the vacuum in the ceramic shell, the medium and high voltage circuit can quickly extinguish the arc and suppress the current after the power is cut off, avoiding accidents and unexpected events. It should be noted that when the moving and static contacts of the vacuum interrupter are energized and separated, a vacuum arc and high-temperature metal vapor will be generated between the moving and static contacts. The high temperature will be transmitted along the conductive rod to each component on the conductive rod and the external connector, and affect its mechanical properties and service life.

[0003] Our company currently has a vacuum interrupter that helps to reduce the impact of high temperature on components on a conductive rod, as disclosed in the patent document (CN219066692U), comprising a heat insulation component, a moving contact, a protective cover and a moving conductive rod, the moving contact is arranged at one end of the moving conductive rod, the protective cover is sleeved on the moving conductive rod, a bellows is arranged at one end of the protective cover away from the moving contact, the heat insulation component is located between the moving contact and the protective cover, the heat insulation component comprises an accommodating cavity, a plurality of heat absorbing members are arranged in the accommodating cavity, when the moving conductive rod moves and causes the moving contact to be electrically separated from the static contact in the vacuum interrupter and generates high temperature, a portion of the heat is absorbed by the heat absorbing member in the accommodating cavity, so that the amount and temperature of the metal vapor transferred to the protective cover and the bellows in the protective cover are significantly attenuated, thereby achieving heat insulation protection for the bellows. However: in this embodiment, the number of the heat absorbing components is constant and does not interact with the outside world. The heat absorbing components can only absorb a certain amount of heat within a predetermined time. As vacuum interrupters have been used in high-voltage circuits with higher voltage levels in recent years, there is room for further improvement and optimization of their thermal insulation performance.

[0004] Therefore, there is a need to provide a vacuum arc extinguishing chamber that has better heat dissipation performance and can interact with the outside world through a refrigerant. Summary of the invention

[0005] The main purpose of the present application is to provide a vacuum arc extinguishing chamber with good heat dissipation performance, wherein the vacuum arc extinguishing chamber with good heat dissipation performance comprises a shell and a conductive rod combination, the shell has a vacuum cavity, the conductive rod combination comprises a static conductive rod assembly and a dynamic conductive rod assembly, the static conductive rod assembly is fixedly mounted on the shell, the dynamic conductive rod assembly is slidably arranged on the shell, one end of the static conductive rod assembly and the dynamic conductive rod assembly that are relatively arranged both extend into the vacuum cavity, and at least one of the static conductive rod assembly or one of the dynamic conductive rod assembly has a heat dissipation channel that is connected to the outside and not connected to the vacuum cavity. By setting the heat dissipation channel that is connected to the outside, the refrigerant can continuously enter the heat dissipation channel to absorb heat and discharge it from the heat dissipation channel. Compared with a constant number of heat absorbing parts in the prior art, it has the advantages of interaction between the refrigerant and the outside world and better heat dissipation performance.

[0006] Another object of the present application is to provide a vacuum arc extinguishing chamber with good heat dissipation performance, wherein the static conductive rod assembly includes a first connecting member and a first middle member, the first connecting member has a first connecting hole and two first through holes, the first middle member is located at one end of the first connecting member close to the dynamic conductive rod assembly, the first middle member has a first groove at one end close to the first connecting member, the first middle member is fixedly connected to the first connecting member, and the two ends of the first groove are respectively connected to the two first through holes to form the heat dissipation channel to realize the heat dissipation channel on the static conductive rod assembly.

[0007] Another object of the present application is to provide a vacuum arc extinguishing chamber with good heat dissipation performance, wherein the dynamic conductive rod assembly includes a second connecting member and a second middle member, the second connecting member has a third connecting hole, two second through holes, a second groove and two side grooves, the second middle member is located at one end of the second connecting member close to the static conductive rod assembly and is fixedly connected to the second connecting member, the second groove extends a predetermined distance from an end surface of the second connecting member close to the second middle member in a direction away from the second middle member, the two second through holes extend from the bottom wall of the third connecting hole toward the second middle member and are connected to the second groove, the two side grooves are located on both sides of the third connecting hole and are connected to the third connecting hole, the two side grooves, the two second through holes and the second groove together form the heat dissipation channel to realize the heat dissipation channel on the dynamic conductive rod assembly.

[0008] In order to achieve at least one of the above-mentioned invention purposes, the present application provides a vacuum interrupter with good heat dissipation performance, wherein the vacuum interrupter with good heat dissipation performance comprises:

[0009] a housing having a vacuum chamber; and

[0010] A conductive rod assembly, the conductive rod assembly comprising a static conductive rod assembly and a dynamic conductive rod assembly, the static conductive rod assembly is fixedly mounted on the housing, the dynamic conductive rod assembly is slidably disposed on the housing, one end of the static conductive rod assembly and the dynamic conductive rod assembly disposed oppositely both extend into the vacuum chamber, and at least one of the static conductive rod assembly or the dynamic conductive rod assembly has a heat dissipation channel connected to the outside and not connected to the vacuum chamber.

[0011] In one or more embodiments of the present application, the static conductive rod assembly includes a first connecting member and a first middle member, the first connecting member has a first connecting hole and two first through holes, the first middle member is located at one end of the first connecting member close to the dynamic conductive rod assembly, the first middle member has a first groove at one end close to the first connecting member, the first middle member is fixedly connected to the first connecting member, and the two ends of the first groove are respectively connected to the two first through holes to form the heat dissipation channel.

[0012] In one or more embodiments of the present application, the first connecting member and the first intermediate member each have a connecting portion at one opposite end, and each of the connecting portions has a plurality of second connecting holes.

[0013] In one or more embodiments of the present application, the dynamic conductive rod assembly includes a second connecting member and a second middle member, the second connecting member having a third connecting hole, two second through holes, a second groove and two side grooves, the second middle member is located at one end of the second connecting member close to the static conductive rod assembly and is fixedly connected to the second connecting member, the second groove extends a predetermined distance from an end surface of the second connecting member close to the second middle member in a direction away from the second middle member, the two second through holes extend from the bottom wall of the third connecting hole toward the second middle member and are connected to the second groove, the two side grooves are located on both sides of the third connecting hole and are connected to the third connecting hole, and the two side grooves, the two second through holes and the second groove together form the heat dissipation channel.

[0014] In one or more embodiments of the present application, the vacuum arc extinguishing chamber with good heat dissipation performance further includes a plurality of cooling tubes, and each of the heat dissipation channels is provided with a cooling tube.

[0015] In one or more embodiments of the present application, the vacuum arc extinguishing chamber with good heat dissipation performance also includes an end cover combination, the end cover combination includes a dynamic end cover and a static end cover, the dynamic end cover and the static end cover are respectively located at the two ends of the outer shell and close the two end cavity openings of the vacuum chamber.

[0016] In one or more embodiments of the present application, the vacuum arc extinguishing chamber with good heat dissipation performance also includes a protective cover, one end of the protective cover has a protective cavity, the bottom of the protective cavity has a third through hole, the end of the protective cover facing away from the protective cavity is fixedly connected to an end of the second middle piece close to the second connecting piece, and the end of the second connecting piece having the second groove extends into the protective cavity and passes through the third through hole and is fixedly connected to the second middle piece.

[0017] In one or more embodiments of the present application, the vacuum arc extinguishing chamber with good heat dissipation performance also includes a bellows, which is sleeved on the outside of the second connecting piece, and one end of the bellows extends into the protective cavity, and the two ends of the bellows are respectively fixedly connected to the moving end cover and the protective cover.

[0018] In one or more embodiments of the present application, the vacuum arc extinguishing chamber with good heat dissipation performance also includes a contact combination, the contact combination includes a moving contact and a static contact, the moving contact is fixedly connected to one end of the second middle piece away from the second connecting piece, and the static contact is fixedly connected to one end of the first middle piece away from the first connecting piece.

[0019] In one or more embodiments of the present application, the vacuum arc extinguishing chamber with good heat dissipation performance further includes a shielding tube, which is located outside the moving contact and the static contact and fixedly mounted on the outer shell.

[0020] In an embodiment of the present application, a vacuum arc extinguishing chamber with good heat dissipation performance includes a shell and a conductive rod combination, the shell has a vacuum cavity, the conductive rod combination includes a static conductive rod assembly and a dynamic conductive rod assembly, the static conductive rod assembly is fixedly mounted on the shell, and the dynamic conductive rod assembly is slidably arranged on the shell, and one end of the static conductive rod assembly and the dynamic conductive rod assembly that are relatively arranged both extend into the vacuum cavity, and at least one static conductive rod assembly or one dynamic conductive rod assembly has a heat dissipation channel that is connected to the outside and not connected to the vacuum cavity. By setting a heat dissipation channel that is connected to the outside, refrigerant can continuously enter the heat dissipation channel to absorb heat and discharge it from the heat dissipation channel. Compared with a constant number of heat absorption parts in the prior art, it has the advantages of interaction between the refrigerant and the outside world and better heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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:

[0022] Figure 1 The figure shows a schematic structural diagram of a vacuum interrupter with good heat dissipation performance according to the utility model;

[0023] Figure 2 Picture shows Figure 1Cross-sectional view at AA. DETAILED DESCRIPTION

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Application Overview

[0029] There is a vacuum interrupter in which the number of heat absorbing parts is constant and does not interact with the outside world. The heat absorbing parts can only absorb a certain amount of heat within a predetermined time. As vacuum interrupters have been used in high-voltage circuits with higher voltage levels in recent years, there is room for further improvement and optimization of their thermal insulation performance.

[0030] Based on the above technical problems, the present application proposes a vacuum arc chamber with good heat dissipation performance, wherein the vacuum arc chamber with good heat dissipation performance has a simple structure, does not involve complicated manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the vacuum arc chamber with good heat dissipation performance provided by the present application is easy to produce and low in cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0031] Schematic diagram of a vacuum interrupter with good heat dissipation performance.

[0032] refer to Figure 1 to Figure 2 According to a preferred embodiment of the utility model, a vacuum interrupter with good heat dissipation performance includes a shell 10 and a conductive rod assembly 20.

[0033] Specifically, Figure 1 As shown, the housing 10 has a vacuum chamber 101, and the vacuum chamber 101 is evacuated; in addition, the conductive rod assembly 20 includes a static conductive rod assembly 201 and a dynamic conductive rod assembly 202, the static conductive rod assembly 201 is fixedly mounted on the housing 10, and the dynamic conductive rod assembly 202 is slidably disposed on the housing 10, and the opposite ends of the static conductive rod assembly 201 and the dynamic conductive rod assembly 202 are both extended into the vacuum chamber 101, and the opposite ends of the static conductive rod assembly 201 and the dynamic conductive rod assembly 202 are both connected to an external operating assembly. When the moving conductive rod assembly 202 moves, the moving conductive rod assembly 202 abuts against or separates from the static conductive rod assembly 201; more specifically, when the moving conductive rod assembly 202 abuts against the static conductive rod assembly 201, the moving conductive rod assembly 202 and the static conductive rod assembly 201 are connected, and the external operating assembly respectively connected to the moving conductive rod assembly 202 and the static conductive rod assembly 201 is connected; conversely, when the moving conductive rod assembly 202 separates from the static conductive rod assembly 201, the moving conductive rod assembly 202 is isolated from the static conductive rod assembly 201.

[0034] Specifically, Figure 1 As shown, the static conductive rod assembly 201 includes a first connecting member 2011 and a first middle member 2012, and the first connecting member 2011 is connected to the first middle member 2012. In order to realize the connection between the static conductive rod assembly 201 and the external operating assembly, the first connecting member 2011 has a first connecting hole 20111 for threaded connection with the external operating assembly, and the first connecting hole 20111 extends from an end face of the first connecting member 2011 away from the first middle member 2012 toward the direction of the first middle member 2012 for a predetermined distance.

[0035] In addition, if Figure 1As shown, the dynamic conductive rod assembly 202 includes a second connecting member 2021 and a second middle member 2022, the second connecting member 2021 is connected to the second middle member 2022, the second connecting member 2021 has a third connecting hole 20211 threadedly connected to another external operating assembly, the third connecting hole 20211 is obtained by extending a predetermined distance from one end of the second connecting member 2021 away from the second middle member 2022 in the direction of the second middle member 2022, the first connecting hole 20111 and the third connecting hole 20211 are both threaded holes, when the external operating assembly is actuated, the dynamic conductive rod assembly 202 is connected to or separated from the static conductive rod assembly 201.

[0036] It should be noted that, assuming that the moving conductive rod assembly 202 is connected to the static conductive rod assembly 201 at this time, when the moving conductive rod assembly 202 moves a predetermined distance away from the static conductive rod assembly 201 under the action of the external operating assembly, a vacuum arc will be generated between the moving conductive rod assembly 202 and the static conductive rod assembly 201 and high-temperature steam will be generated, and this heat will be transferred from the end of the moving conductive rod assembly 202 and the static conductive rod assembly 201 facing each other toward the end of the moving conductive rod assembly 202 and the static conductive rod assembly 201 facing each other.

[0037] In order to reduce the impact of high temperature on the components of the moving conductive rod assembly 202 and the static conductive rod assembly 201, in the present invention, at least one of the static conductive rod assembly 201 or one of the moving conductive rod assembly 202 has a heat dissipation channel (not shown in the figure) that is connected to the outside and not connected to the vacuum chamber 101.

[0038] It should be noted that, by connecting the heat dissipation channel with the outside, the external refrigerant can continuously flow into the heat dissipation channel to absorb heat and be discharged after absorbing the heat. Compared with the prior art, it has the advantages that the amount of refrigerant is not a constant value, the refrigerant interacts with the outside and continuously cools down, and is suitable for high-voltage circuits with high voltage levels, and can effectively reduce the impact of high temperature on the performance of various components on the conductive rod; in addition, by making the heat dissipation channel not connected to the vacuum chamber 101, the sealing of the vacuum chamber 101 is ensured; in addition, in the embodiment of the present application, the static conductive rod assembly 201 and the dynamic conductive rod assembly 202 both have a heat dissipation channel.

[0039] Specifically, in order to arrange the heat dissipation channel on the static conductive rod assembly 201, as shown in FIG. Figure 2As shown, the first connecting member 2011 also has two first through holes 20112, and the two first through holes 20112 are located on the outside of the first connecting hole 20111. The first middle member 2012 is located at one end of the first connecting member 2011 close to the dynamic conductive rod assembly 202. The first middle member 2012 has a first groove 20121 at one end close to the first connecting member 2011. The first middle member 2012 is fixedly connected to the first connecting member 2011, and the two ends of the first groove 20121 are respectively connected to the two first through holes 20112 to form the heat dissipation channel.

[0040] It should be noted that if the first middle piece 2012 and the first connecting piece 2011 are integrally formed, the processing and forming of the heat dissipation channel is difficult. Therefore, in the embodiment of the present application, the first middle piece 2012 and the first connecting piece 2011 are designed as separate bodies. Since there is a large amount of margin space on the outside of the static conductive rod assembly 201, in order to achieve the fixed connection between the first middle piece 2012 and the first connecting piece 2011, Figure 1 As shown, the first connecting member 2011 and the first middle member 2012 have a connecting portion 20113 at one end opposite to each other, the connecting portion 20113 is in the shape of a round pancake, the radial dimension of the connecting portion 20113 is larger than the radial dimension of the other end of the first middle member 2012 and the first connecting member 2011, and each connecting portion 20113 has a plurality of second connecting holes 20114, the second connecting holes 20114 are threaded holes, and one end of the bolt is successively screwed into the second connecting holes 20114 on the first connecting member 2011 and the first middle member 2012. In addition, to ensure sealing, when the bolt is screwed in, the surface of the bolt is coated with thread glue, and the thread gap between the second connecting hole 20114 and the bolt is filled with the thread glue.

[0041] Furthermore, in order to arrange the heat dissipation channel on the dynamic conductive rod assembly 202, as shown in FIG. Figure 1 and Figure 2As shown, the second connecting member 2021 also has two second through holes 20212, a second groove 20213 and two side grooves 20214, the second middle member 2022 is located at one end of the second connecting member 2021 close to the static conductive rod assembly 201 and is fixedly connected to the second connecting member 2021, the second groove 20213 extends a predetermined distance from one end of the second connecting member 2021 close to the second middle member 2022 in a direction away from the second middle member 2022, the two second through holes 20212 extend from the bottom wall of the third connecting hole 20211 toward the second middle member 2022 and are connected to the second groove 20213, the two side grooves 20214 are located on both sides of the third connecting hole 20211 and are connected to the third connecting hole 20211, and the two side grooves 20214, the two second through holes 20212 and the second groove 20213 together form the heat dissipation channel.

[0042] It should be noted that, due to the limited radial dimension of the second connecting member 2021, in the embodiment of the present application, the two second through holes 20212 no longer follow the arrangement method on the static conductive rod assembly 201, but utilize the space at the bottom wall of the third connecting hole 20211, extending from the bottom wall of the third connecting hole 20211 toward the second middle member 2022, and the second groove 20213 is located on the end face of the second connecting member 2021, which provides convenience for processing; in addition, because there is less residual space on the outside of the dynamic conductive rod assembly 202, in the embodiment of the present application, the end of the second connecting member 2021 having the second groove 20213 is fixedly connected to the second middle member 2022 by welding.

[0043] Furthermore, in order to facilitate the external refrigerant to flow into and out of the heat dissipation channel without interfering with the external operating components, Figure 1 As shown, the vacuum interrupter with good heat dissipation performance further includes a plurality of cooling tubes 30, and each of the heat dissipation channels is provided with a cooling tube 30.

[0044] It should be noted that, refer to Figure 1 One end of one cooling tube 30 extends from one of the first through holes 20112, and after passing through the first groove 20121, extends out from another of the first through holes 20112; one end of another cooling tube 30 extends from one of the side grooves 20214, and after passing through one of the second through holes 20212 and the second groove 20213 successively, extends out from another of the second through holes 20212 and another of the side grooves 20214; in addition, in the embodiment of the present application, the refrigerant flowing in the cooling tube 30 is preferably electronic fluorinated liquid or insulating oil.

[0045] It should also be pointed out that, since the movable conductive rod assembly 202 needs to perform axial movement during actual use, the cooling tube 30 may be caused to move during this axial movement. In the embodiment of the present application, by arranging the second through hole 20212 at the bottom of the third connecting hole 20211, when the second connecting member 2021 is threadedly connected to the external operating assembly, the part of the external operating assembly extending into the third connecting hole 20211 can just provide a pressure to the cooling tube 30 to reduce the risk of its movement. In addition, in order to more accurately To adjust the pressure on the cooling tube 30, the dynamic conductive rod assembly 202 also includes an elastic member (not shown in the figure), which is preferably a spring. The elastic member is arranged between the cooling tube 30 and an end face of an external operating assembly extending into the third connecting hole 20211. During the process of screwing in the external operating assembly, the elastic member is pressurized and provides a pressure on the cooling tube 30, and the greater the distance the external operating assembly is screwed into the third connecting hole 20211, the greater the pressure applied by the elastic member to the cooling tube 30.

[0046] Furthermore, the two ends of the vacuum chamber 101 of the housing 10 are connected. To achieve the sealing of the two ends of the vacuum chamber 101, Figure 1 As shown, the vacuum arc extinguishing chamber with good heat dissipation performance also includes an end cover assembly 40, and the end cover assembly 40 includes a dynamic end cover 401 and a static end cover 402. The dynamic end cover 401 and the static end cover 402 are respectively located at the two ends of the outer shell 10 and close the two end openings of the vacuum chamber 101. The dynamic end cover 401 and the static end cover 402 are fixedly connected to the outer shell 10 by welding.

[0047] Furthermore, if Figure 1 As shown, the vacuum interrupter with good heat dissipation performance also includes a protective cover 50 and a bellows 60, and the protective cover 50 is used to prevent metal vapor from directly acting on the bellows 60. Specifically, one end of the protective cover 50 has a protective cavity 501, and the bottom of the protective cavity 501 has a third through hole 502. The end of the protective cover 50 away from the protective cavity 501 is fixedly connected to the end of the second middle piece 2022 close to the second connecting piece 2021, and the fixed connection method is preferably welding. The end of the second connecting piece 2021 having the second groove 20213 extends into the protective cavity 501 and passes through the third through hole 502 and is fixedly connected to the second middle piece 2022. In addition, the bellows 60 is sleeved on the outside of the second connecting piece 2021, and one end of the bellows 60 extends into the protective cavity 501. The two ends of the bellows 60 are respectively fixedly connected to the movable end cover 401 and the protective cover 50, and the fixed connection method includes but is not limited to welding.

[0048] Furthermore, in order to extend the service life of the first middleware 2012 and the second middleware 2022, as Figure 1 As shown, the vacuum arc extinguishing chamber with good heat dissipation performance also includes a contact combination 70, and the contact combination 70 includes a moving contact 701 and a static contact 702. The moving contact 701 is fixedly connected to the end of the second middle piece 2022 away from the second connecting piece 2021, and the static contact 702 is fixedly connected to the end of the first middle piece 2012 away from the first connecting piece 2011, and the fixed connection method includes but is not limited to threaded connection. By arranging the moving contact 701 and the static contact 702, direct contact between the first middle piece 2012 and the second middle piece 2022 is avoided. It should be noted that the moving contact 701 and the static contact 702 are both made of conductive metal, such as oxygen-free copper.

[0049] Furthermore, in order to prevent the housing 10 from being contaminated by metal vapor, Figure 1 As shown, the vacuum interrupter with good heat dissipation performance further includes a shielding tube 80, which is located outside the moving contact 701 and the static contact 702 and is fixedly mounted on the housing 10 by welding or clamping.

[0050] In summary, the vacuum interrupter with good heat dissipation performance based on the embodiment of the present application is explained, which provides the vacuum interrupter with good heat dissipation performance with advantages such as interaction between refrigerant and the outside world and better heat dissipation performance.

[0051] It is worth mentioning that in the embodiment of the present application, the vacuum interrupter with good heat dissipation performance 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 vacuum interrupter with good heat dissipation performance 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.

[0052] 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 vacuum interrupter with good heat dissipation performance, characterized in that: The vacuum interrupter with good heat dissipation performance comprises a shell having a vacuum cavity; and A conductive rod assembly, the conductive rod assembly comprising a static conductive rod assembly and a dynamic conductive rod assembly, the static conductive rod assembly is fixedly mounted on the housing, the dynamic conductive rod assembly is slidably disposed on the housing, one end of the static conductive rod assembly and the dynamic conductive rod assembly disposed oppositely both extend into the vacuum chamber, and at least one of the static conductive rod assembly or the dynamic conductive rod assembly has a heat dissipation channel connected to the outside and not connected to the vacuum chamber.

2. The vacuum interrupter with good heat dissipation performance according to claim 1, characterized in that: The static conductive rod assembly includes a first connecting member and a first middle member, the first connecting member has a first connecting hole and two first through holes, the first middle member is located at one end of the first connecting member close to the dynamic conductive rod assembly, the first middle member has a first groove at one end close to the first connecting member, the first middle member is fixedly connected to the first connecting member, and the two ends of the first groove are respectively connected to the two first through holes to form the heat dissipation channel.

3. The vacuum interrupter with good heat dissipation performance according to claim 2, characterized in that: The first connecting member and the first intermediate member have a connecting portion at one end opposite to the first connecting member, and each connecting portion has a plurality of second connecting holes.

4. The vacuum interrupter with good heat dissipation performance according to claim 2, characterized in that: The dynamic conductive rod assembly includes a second connecting member and a second middle member, the second connecting member has a third connecting hole, two second through holes, a second groove and two side grooves, the second middle member is located at one end of the second connecting member close to the static conductive rod assembly and is fixedly connected to the second connecting member, the second groove extends a predetermined distance from an end surface of the second connecting member close to the second middle member in a direction away from the second middle member, the two second through holes extend from the bottom wall of the third connecting hole toward the second middle member and are connected to the second groove, the two side grooves are located on both sides of the third connecting hole and are connected to the third connecting hole, and the two side grooves, the two second through holes and the second groove together form the heat dissipation channel.

5. The vacuum interrupter with good heat dissipation performance according to any one of claims 1 to 4, characterized in that: The vacuum interrupter with good heat dissipation performance also includes a plurality of cooling tubes, and each of the heat dissipation channels is provided with a cooling tube.

6. The vacuum interrupter with good heat dissipation performance according to claim 4, characterized in that: The vacuum arc extinguishing chamber with good heat dissipation performance also includes an end cover assembly, which includes a dynamic end cover and a static end cover. The dynamic end cover and the static end cover are respectively located at two ends of the shell and close the two end openings of the vacuum chamber.

7. The vacuum interrupter with good heat dissipation performance according to claim 6, characterized in that: The vacuum arc extinguishing chamber with good heat dissipation performance also includes a protective cover, one end of the protective cover has a protective cavity, the bottom of the protective cavity has a third through hole, the end of the protective cover away from the protective cavity is fixedly connected to an end of the second middle piece close to the second connecting piece, and the end of the second connecting piece with the second groove extends into the protective cavity and passes through the third through hole and is fixedly connected to the second middle piece.

8. The vacuum interrupter with good heat dissipation performance according to claim 7, characterized in that: The vacuum arc extinguishing chamber with good heat dissipation performance also includes a bellows, which is sleeved on the outside of the second connecting piece, and one end of the bellows extends into the protection cavity, and the two ends of the bellows are fixedly connected to the moving end cover and the protection cover respectively.

9. The vacuum interrupter with good heat dissipation performance according to claim 4, characterized in that: The vacuum arc extinguishing chamber with good heat dissipation performance also includes a contact combination, which includes a moving contact and a static contact. The moving contact is fixedly connected to an end of the second middle piece away from the second connecting piece, and the static contact is fixedly connected to an end of the first middle piece away from the first connecting piece.

10. The vacuum interrupter with good heat dissipation performance according to claim 9, characterized in that: The vacuum interrupter with good heat dissipation performance further comprises a shielding cylinder, which is located outside the moving contact and the static contact and is fixedly mounted on the housing.

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