Vacuum arc-extinguishing chamber with getter
By installing the annular getter on the protective cover in the vacuum arc extinguishing chamber and fixing it with mounting parts and springs or fasteners, the problem of getter disengagement is solved, and the rapid absorption of metal steam is achieved and the improvement of Arc extinguishing performance and production economy.
Patent Information
- Application Number
- CN202420007858.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-02
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-02
AI Technical Summary
The existing vacuum arc extinguishing chamber is likely to cause the getter to detach during the handling and other processes, resulting in the extended absorption time of metal steam, affecting the arc extinguishing performance of the vacuum arc extinguishing chamber.
A vacuum arc extinguishing chamber with getter is designed, in which an annular getter is mounted on the protective cover, ensuring contacts of the getter and the moving conductive rod through the design of the mounting member and spring or fastener. With closer spacing, metal steam can contact and be absorbed more quickly.
It realizes rapid contact and absorption of metal steam and getter, improves the arc extinguishing performance of the vacuum arc extinguishing chamber, and is simple in structure, low in cost, and is easy to produce and promote.
Smart Images
Figure CN222146085U_ABST
Abstract
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 a getter. 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 electrically separated under the action of the external operating mechanism, a vacuum arc will be generated between the moving and static contacts, and the moving contact will generate metal vapor at high temperature. This part of the metal vapor will affect the vacuum in the vacuum interrupter cavity, thereby reducing the arc extinguishing performance of the vacuum interrupter. In view of this, the current practice in the industry is to put a getter in the vacuum interrupter to absorb the metal vapor to ensure the vacuum in the vacuum interrupter cavity.
[0003] Patent document (CN108352271B) discloses a vacuum interrupter with a getter, comprising an electrical insulating tube, both ends of which are closed by two metal covers, at least one of which is made of a deep-drawn component, the deep-drawn component partially surrounds the inner volume of the at least one metal cover, and at least one getter element is arranged inside the inner volume of the metal cover. However, since the vacuum interrupter may be inverted during transportation, in order to prevent the getter element from escaping from the inner volume of the metal cover, in this embodiment, the distance from the side of the deep-drawn component of the metal cover to the inner wall of the electrical insulating tube must be smaller than the minimum outer dimension of the getter element, otherwise the getter element is easy to escape from the gap between the side of the deep-drawn component of the metal cover and the inner wall of the electrical insulating tube, and this smaller gap causes the metal vapor to take a longer time to flow into the inner volume of the metal cover and be adsorbed by the getter element.
[0004] Therefore, there is a need to provide a vacuum interrupter with a getter that is closer to the contact and allows metal vapor to contact the getter more quickly and be absorbed. Utility Model Content
[0005] The main purpose of the present application is to provide a vacuum interrupter with a getter, wherein the vacuum interrupter with a getter comprises a shell, a conductive rod assembly, a protective cover and a vacuum assembly, the shell has a vacuum chamber, the conductive rod assembly comprises a moving conductive rod and a static conductive rod, the static conductive rod is fixedly mounted on the shell, the moving conductive rod is slidably mounted on the shell, the moving conductive rod and the static conductive rod are each provided with a contact at one end opposite to the other, the moving conductive rod and the static conductive rod are provided with one end of the contact extending into the vacuum chamber, and when the moving conductive rod moves, the contact on the moving conductive rod contacts the contact on the static conductive rod The contacts are abutted against or separated, the protective cover is arranged on the moving conductive rod and fixedly connected to the moving conductive rod, the end of the protective cover facing away from the static conductive rod has a protective cavity, the vacuum component includes an annular getter and a mounting piece, the mounting piece is fixedly connected to the protective cover, the end of the mounting piece facing away from the static conductive rod has a mounting cavity, the annular getter is arranged in the mounting cavity, and the annular getter is installed on the protective cover by setting the mounting piece. Compared with the prior art of placing the getter at the end cover, the embodiment of the present application has the advantages of being closer to the contact, and the metal vapor can contact and be absorbed by the getter more quickly.
[0006] Another object of the present application is to provide a vacuum arc extinguishing chamber with a getter, wherein the side wall of the installation cavity close to the moving conductive rod has a first annular groove, and the vacuum component also includes a retaining spring, which is inserted into the first annular groove and is located above the annular getter, so that the annular getter is prevented from falling off by the retaining spring.
[0007] Another object of the present application is to provide a vacuum arc extinguishing chamber with a getter, wherein the side wall of the mounting cavity has a plurality of first threaded holes, and the vacuum component also includes a plurality of fasteners, the fasteners are threadedly connected to the first threaded holes and extend into the mounting cavity, and the fasteners are located above the annular getter, and the annular getter is prevented from falling off by the fasteners.
[0008] In order to achieve at least one of the above-mentioned invention objectives, the present application provides a vacuum interrupter with a getter, wherein the vacuum interrupter with a getter comprises:
[0009] a housing having a vacuum chamber; and
[0010] a conductive rod assembly, the conductive rod assembly comprising a moving conductive rod and a static conductive rod, the static conductive rod being fixedly mounted on the housing, the moving conductive rod being slidably mounted on the housing, the moving conductive rod and the static conductive rod being provided with a contact at opposite ends, the ends of the moving conductive rod and the static conductive rod provided with the contact extending into the vacuum chamber, and when the moving conductive rod moves, the contact on the moving conductive rod abuts against or separates from the contact on the static conductive rod; and
[0011] a protective cover, the protective cover being arranged on the moving conductive rod and fixedly connected to the moving conductive rod, the protective cover having a protective cavity at one end away from the static conductive rod; and
[0012] A vacuum component, the vacuum component includes an annular getter and a mounting piece, the mounting piece is fixedly connected to the protective cover, the mounting piece has an installation cavity at one end away from the static conductive rod, and the annular getter is arranged in the installation cavity.
[0013] In one or more embodiments of the present application, the side wall of the mounting cavity close to the moving conductive rod has a first annular groove, and the vacuum assembly also includes a retaining spring, which is inserted into the first annular groove and located above the annular getter.
[0014] In one or more embodiments of the present application, the side wall of the installation cavity has a plurality of first threaded holes, and the vacuum assembly further includes a plurality of fasteners, which are threadedly connected to the first threaded holes and extend into the installation cavity, and the fasteners are located above the annular getter.
[0015] In one or more embodiments of the present application, the first threaded hole passes through the side walls of both sides of the installation cavity, the protective cover has a side wall at one end of the protective cavity with a plurality of second threaded holes, the first threaded holes correspond to the second threaded holes one by one and are coaxially arranged, the fastener passes through the first threaded hole and the second threaded hole successively, and the fastener is threadedly connected to the protective cover and the mounting piece at the same time.
[0016] In one or more embodiments of the present application, the mounting member has a first annular groove, which extends a predetermined distance from one end of the mounting member away from the mounting cavity toward the other end, and the first annular groove is located on the inner side of the mounting cavity. The protective cover has an edge at one end of the protective cavity extending into the first annular groove and allows the mounting member to be mounted on the protective cover.
[0017] In one or more embodiments of the present application, the mounting member has a first through hole at the center, the first annular groove is located between the first through hole and the mounting cavity, the protective cover has a second through hole at the center, and the dynamic conductive rod passes through the first through hole and the second through hole successively.
[0018] In one or more embodiments of the present application, a wall surface of the installation cavity is provided with a plurality of air holes.
[0019] In one or more embodiments of the present application, the vacuum arc extinguishing chamber with a getter also includes a bellows and an end cover combination, the two ends of the vacuum chamber are connected, the end cover combination includes a moving end cover and a static end cover, the moving end cover and the static end cover are respectively located at the two ends of the outer shell, and the moving end cover and the static end cover are fixedly connected to the outer shell and close the two end ports of the vacuum chamber, the moving conductive rod is provided with one end of the contact passing through the moving end cover and is slidably arranged in the vacuum chamber, the static conductive rod is provided with one end of the contact passing through the static end cover and extending into the vacuum chamber, and the bellows is located between the protective cover and the moving end cover.
[0020] In one or more embodiments of the present application, the vacuum arc extinguishing chamber with a getter includes a shielding tube, the shielding tube has an anti-splashing cavity with two ends passing through, the shielding tube is connected to the outer shell, and the moving conductive rod and the static conductive rod are provided with one end of the contact extending into the anti-splashing cavity.
[0021] In an embodiment of the present application, a vacuum arc extinguishing chamber with a getter includes a shell with a vacuum cavity, a conductive rod combination, a protective cover with a protective cavity and a vacuum component. The conductive rod combination includes a moving conductive rod and a static conductive rod. The static conductive rod is fixed on the shell, and the moving conductive rod is slidably arranged on the shell. The moving conductive rod and the static conductive rod are both provided with a contact. One end of the moving conductive rod and the static conductive rod provided with the contact extends into the vacuum cavity. When the moving conductive rod moves, the contact on the moving conductive rod abuts against or separates from the contact on the static conductive rod. The protective cover is arranged on the moving conductive rod. The vacuum component includes an annular getter and a mounting piece. The mounting piece is fixedly connected to the protective cover. The mounting piece has an mounting cavity. The annular getter is arranged in the mounting cavity. The annular getter is installed on the protective cover by arranging the mounting piece. Compared with the prior art in which the getter is placed at the end cover, the embodiment of the present application has the advantages of being closer to the contact, and metal vapor can contact and be absorbed by the getter more quickly. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] 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:
[0023] Figure 1The figure shows a schematic structural diagram of a vacuum interrupter with a getter in the first embodiment of the utility model;
[0024] Figure 2 Pictured Figure 1 A local enlarged view of point C;
[0025] Figure 3 The figure shows a schematic structural diagram of a vacuum assembly according to a second embodiment of the present utility model. DETAILED DESCRIPTION
[0026] 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.
[0027] 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.
[0028] 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.
[0029] 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.
[0030] Application Overview
[0031] There is a vacuum interrupter with a getter, in which the distance from the side of the deep-drawn part of the metal cover to the inner wall of the electrical insulating tube must be smaller than the minimum outer dimension of the getter element, otherwise the getter element is easy to escape from the gap between the side of the deep-drawn part of the metal cover and the inner wall of the electrical insulating tube, and this smaller gap causes the metal vapor to take a longer time to flow into the inner volume of the metal cover and be adsorbed by the getter element.
[0032] Based on the above technical problems, the present application proposes a vacuum arc chamber with a getter, wherein the vacuum arc chamber with a getter 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 a getter 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.
[0033] Schematic diagram of a vacuum interrupter with getter,
[0034] refer to Figures 1 to 3 According to any preferred embodiment of the present invention, a vacuum interrupter with a getter comprises a housing 10. Specifically, Figure 1 As shown, the housing 10 has a vacuum chamber 101 , both ends of the vacuum chamber 101 are connected, and the vacuum chamber 101 is evacuated. The material of the housing 10 is preferably ceramic.
[0035] Furthermore, in order to achieve the sealing of the vacuum chamber 101, in any embodiment of the present utility model, as Figure 1 As shown, the vacuum arc extinguishing chamber with a getter also includes an end cover assembly 20, and the end cover assembly 20 includes a movable end cover 201 and a static end cover 202, and the movable end cover 201 and the static end cover 202 are respectively located at the two ends of the outer shell 10, and the movable end cover 201 and the static end cover 202 are fixedly connected to the outer shell 10 and close the two end ports of the vacuum chamber 101, and the fixed connection method includes but is not limited to welding.
[0036] Furthermore, in order to realize the selective conduction or isolation of two external components, in any embodiment of the present utility model, Figure 1As shown, the vacuum interrupter with getter further includes a conductive rod assembly 30. Specifically, the conductive rod assembly 30 includes a moving conductive rod 301 and a static conductive rod 302, the static conductive rod 302 is fixedly mounted on the housing 10 by welding, the moving conductive rod 301 is slidably mounted on the housing 10, and the opposite ends of the moving conductive rod 301 and the static conductive rod 302 are both fixedly mounted with a contact 3011 in a threaded connection manner, the moving conductive rod 301 is provided with an end of the contact 3011 that passes through the moving end cover 201 and is slidably arranged in the vacuum chamber 101, and the static conductive rod 302 is provided with an end of the contact 3011 that passes through the static end cover 202 and extends into the vacuum chamber 101, and when the moving conductive rod 301 is in motion, the contact 3011 on the moving conductive rod 301 abuts against or separates from the contact 3011 on the static conductive rod 302.
[0037] It should be noted that, in order to facilitate the connection between the dynamic conductive rod 301 and the static conductive rod 302 and external components, in any embodiment of the present utility model, Figure 1 As shown, the opposite ends of the moving conductive rod 301 and the static conductive rod 302 each have a connecting hole 3012 .
[0038] In addition, in order to realize that the movable conductive rod 301 only moves axially when being slidably disposed on the housing 10, in any embodiment of the present utility model, Figure 1 As shown, the vacuum arc extinguishing chamber with a getter also includes a guide sleeve 40, which is located at one end of the moving end cover 201 away from the static conductive rod 302, and the guide sleeve 40 is fixedly connected to the moving end cover 201, and its fixed connection method includes but is not limited to welding. The guide sleeve 40 has a guide protrusion 401, and the center of the guide protrusion 401 has a penetrating guide hole 4011, and the moving end cover 201 has a through hole 2011. When the guide sleeve 40 is fixedly connected to the moving end cover 201, the guide protrusion 401 extends into the through hole 2011, and the end of the guide sleeve 40 is in contact with the end surface of the moving end cover 201, and the moving conductive rod 301 is provided with one end of the contact 3011 slidably set in the guide hole 4011.
[0039] Furthermore, in order to prevent the gap between the side of the movable conductive rod 301 and the wall of the guide hole 4011 from causing the vacuum degree in the vacuum chamber 101 to decrease when the movable conductive rod 301 slides in the guide hole 4011, in any embodiment of the present utility model, Figure 1As shown, the vacuum arc extinguishing chamber with a getter also includes a bellows 50, which is sleeved on the moving conductive rod 301, and one end of the bellows 50 close to the contact 3011 is fixedly connected to the moving conductive rod 301, and the other end of the bellows 50 is fixedly connected to an end of the guide protrusion 401 extending into the through hole 2011, and its fixed connection method includes but is not limited to welding.
[0040] It should be noted that when the movable conductive rod 301 reciprocates, the bellows 50 extends or shortens a predetermined distance; since the contacts 3011 of the movable conductive rod 301 and the static conductive rod 302 will generate a vacuum arc and high-temperature metal vapor when they are separated, in order to prevent the high-temperature metal vapor from directly contacting the bellows 50 and affecting its mechanical properties, in any embodiment of the present invention, Figure 1 As shown, the vacuum arc extinguishing chamber with a getter also includes a protective cover 60, which is arranged on the moving conductive rod 301 and is fixedly connected to the moving conductive rod 301 by welding, and the bellows 50 is located between the protective cover 60 and the moving end cover 201, and the end of the protective cover 60 away from the static conductive rod 302 has a protective cavity 601, and the end of the bellows 50 connected to the moving conductive rod 301 extends into the protective cavity 601; in addition, in order to improve the sealing performance, the end of the bellows 50 close to the contact 3011 is in contact with the end face and side face of the protective cavity 601.
[0041] Furthermore, in order to prevent the high-temperature metal vapor generated when the contact 3011 is separated from destroying the vacuum degree in the vacuum chamber 101, in any embodiment of the present utility model, Figure 1 and Figure 2 As shown, the vacuum arc extinguishing chamber with a getter also includes a vacuum component 70, and the vacuum component 70 includes an annular getter 701 and a mounting member 702. The mounting member 702 is fixedly connected to the protective cover 60 and moves synchronously with the protective cover 60. The mounting member 702 has an installation cavity 7021 at one end away from the static conductive rod 302, and the annular getter 701 is arranged in the installation cavity 7021.
[0042] In addition, in any embodiment of the present invention, Figure 2 As shown, the wall surface of the installation cavity 7021 has a plurality of air holes 7022 , that is, the bottom wall and the side surface of the installation cavity 7021 both have a plurality of air holes 7022 , and the air holes 7022 are connected to the vacuum cavity 101 .
[0043] It should be noted that, in the prior art, the getter is placed at the moving end cover 201 or the static end cover 202, and the distance between the getter and the contact 3011 is far; secondly, in order to place the getter at the moving end cover 201 or the static end cover 202, the prior art needs to pull out a circular blocking member at one end of the moving end cover 201 or the static end cover 202 close to the contact 3011, so that the circular blocking member partially closes the inner cavity of the moving end cover 201 or the static end cover 202; in addition, in order to avoid the getter To detach from the inner cavity of the movable end cover 201 or the static end cover 202, it is also necessary to make the distance from the side wall of the annular blocking member to the cavity wall of the vacuum chamber 101 smaller than the minimum outer dimension of the getter. Since the outer dimension of the getter is small, this also leads to a larger radial dimension of the annular blocking member, and a smaller distance from the side wall of the annular blocking member to the cavity wall of the vacuum chamber 101, resulting in a slow flow of high-temperature metal vapor into the inner cavity of the movable end cover 201 or the static end cover 202, and a low efficiency of the getter in absorbing metal vapor. In the utility model, by providing the mounting member 702, the annular getter 701 is arranged on the protective cover 60. Compared with the prior art in which the annular getter 701 is placed on the end cover, the distance between the annular getter 701 and the contact 3011 is closer, and the metal vapor can contact the annular getter 701 faster. In addition, by providing the air holes 7022 on the wall surface of the mounting cavity 7021, when the metal vapor flows toward the protective cover 60 and flows onto the mounting member 702, the metal vapor can contact and be adsorbed by the annular getter 701 through the air holes 7022, and the cavity mouth of the mounting cavity 7021 is connected to the vacuum cavity 101, thereby achieving the advantages of less obstruction between the annular getter 701 and the metal vapor, and the metal vapor is easier to contact with the getter.
[0044] Furthermore, in the first embodiment of the present utility model, in order to prevent the annular getter 701 from being separated from the mounting cavity 7021, as Figure 2 As shown, the side wall of the installation cavity 7021 close to the moving conductive rod 301 has a first annular groove 7023, and the vacuum component 70 also includes a retaining spring 703, which is inserted into the first annular groove 7023 and is located above the annular getter 701 and abuts against the annular getter 701. The retaining spring 703 is provided to prevent the annular getter 701 from detaching from the installation cavity 7021.
[0045] In addition, in the first embodiment of the utility model, in order to achieve a fixed connection between the mounting member 702 and the protective cover 60, the mounting member 702 is welded to the protective cover 60. More specifically, the end of the mounting member 702 facing away from the protective cover 60 is connected to the side surface of the protective cover 60 by welding.
[0046] Figure 3 The diagram shows a second embodiment of the utility model. In the second embodiment, in order to prevent the annular getter 701 from being separated from the installation cavity 7021, the side wall of the installation cavity 7021 has a plurality of first threaded holes 7024, and the vacuum component 70 also includes a plurality of fasteners 704. The fasteners 704 are implemented as bolts. The fasteners 704 are threadedly connected to the first threaded holes 7024 and extend into the installation cavity 7021, and the fasteners 704 are located above the annular getter 701. By arranging the fasteners 704, the annular getter 701 is prevented from being separated from the installation cavity 7021.
[0047] In addition, in the second embodiment of the present utility model, in order to achieve the fixed connection between the mounting member 702 and the protective cover 60, as shown in FIG. Figure 3 As shown, the first threaded hole 7024 passes through the side walls of the installation cavity 7021, and the protective cover 60 has a plurality of second threaded holes 602 on one end side wall of the protective cavity 601. The first threaded hole 7024 corresponds to the second threaded hole 602 one by one and is coaxially arranged. The fastener 704 passes through the first threaded hole 7024 and the second threaded hole 602 successively, and the fastener 704 is threadedly connected to the protective cover 60 and the installation member 702 at the same time.
[0048] Further, in any embodiment of the present invention, in order to initially fix the position of the mounting member 702 on the protective cover 60, so as to facilitate welding or bolting the mounting member 702 to the protective cover 60, as shown in FIG. Figure 2 or Figure 3 As shown, the mounting member 702 has a first annular groove 7025, and the first annular groove 7025 extends a predetermined distance from one end of the mounting member 702 away from the mounting cavity 7021 toward the other end, and the first annular groove 7025 is located on the inner side of the mounting cavity 7021, and the notch of the first annular groove 7025 is opposite to the cavity opening of the mounting cavity 7021, and the protective cover 60 has an edge of one end of the protective cavity 601 extending into the first annular groove 7025 and allowing the mounting member 702 to be sleeved on the protective cover 60.
[0049] Furthermore, in order to facilitate the moving conductive rod 301 to pass through the mounting member 702, as shown in FIG. Figure 2 or Figure 3 As shown, the center of the mounting member 702 has a first through hole 7026, and the first annular groove 7025 is located between the first through hole 7026 and the mounting cavity 7021. Figure 1As shown, the center of the protective cover 60 has a second through hole 603 , and the movable conductive rod 301 passes through the first through hole 7026 and the second through hole 603 successively.
[0050] Furthermore, in order to prevent the housing 10 from being contaminated by metal vapor, in any embodiment of the present invention, Figure 1 As shown, the vacuum arc extinguishing chamber with a getter includes a shielding tube 80, and the shielding tube 80 has an anti-splashing cavity 801 with two ends passing through. The shielding tube 80 is connected to the shell 10 in a snap-fit manner, and one end of the moving conductive rod 301 and the static conductive rod 302 provided with the contact 3011 both extend into the anti-splashing cavity 801. When the contact 3011 is separated, the vacuum arc and the metal vapor are blocked by the wall of the anti-splashing cavity 801 and do not directly act on the shell 10.
[0051] In summary, the vacuum interrupter with getter according to the embodiment of the present application is explained, which provides the vacuum interrupter with getter with advantages such as being closer to the contact and the metal vapor being able to contact with the getter and be absorbed more quickly.
[0052] It is worth mentioning that in the embodiment of the present application, the vacuum interrupter with a getter 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 a getter provided in 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.
[0053] 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 a getter, characterized in that: The vacuum interrupter with getter comprises a housing having a vacuum cavity; and A conductive rod assembly, the conductive rod assembly comprising a moving conductive rod and a static conductive rod, the static conductive rod being fixedly mounted on the housing, the moving conductive rod being slidably mounted on the housing, the moving conductive rod and the static conductive rod being provided with a contact at opposite ends, the ends of the moving conductive rod and the static conductive rod provided with the contact extending into the vacuum chamber, and when the moving conductive rod moves, the contact on the moving conductive rod abuts against or separates from the contact on the static conductive rod; as well as a protective cover, the protective cover being arranged on the moving conductive rod and fixedly connected to the moving conductive rod, the protective cover having a protective cavity at one end away from the static conductive rod; and A vacuum component, the vacuum component includes an annular getter and a mounting piece, the mounting piece is fixedly connected to the protective cover, the mounting piece has an installation cavity at one end away from the static conductive rod, and the annular getter is arranged in the installation cavity.
2. The vacuum interrupter with getter according to claim 1, characterized in that: The side wall of the installation cavity close to the moving conductive rod has a first annular groove, and the vacuum component also includes a clamping spring, which is clamped into the first annular groove and located above the annular getter.
3. The vacuum interrupter with getter according to claim 1, characterized in that: The side wall of the installation cavity has a plurality of first threaded holes, and the vacuum assembly further comprises a plurality of fasteners, which are threadedly connected to the first threaded holes and extend into the installation cavity, and the fasteners are located above the annular getter.
4. The vacuum interrupter with getter according to claim 3, characterized in that: The first threaded hole passes through the side walls of both sides of the installation cavity, and the protective cover has a plurality of second threaded holes on the side wall at one end of the protective cavity. The first threaded holes correspond to the second threaded holes one by one and are coaxially arranged. The fastener passes through the first threaded hole and the second threaded hole successively, and the fastener is threadedly connected to the protective cover and the mounting piece at the same time.
5. The vacuum interrupter with getter according to any one of claims 2 to 4, characterized in that: The mounting piece has a first annular groove, which extends a predetermined distance from one end of the mounting piece away from the mounting cavity toward the other end, and the first annular groove is located on the inner side of the mounting cavity. The protective cover has an edge at one end of the protective cavity extending into the first annular groove and allows the mounting piece to be mounted on the protective cover.
6. The vacuum interrupter with getter according to claim 5, characterized in that: The center of the mounting piece has a first through hole, the first annular groove is located between the first through hole and the mounting cavity, the center of the protective cover has a second through hole, and the dynamic conductive rod passes through the first through hole and the second through hole successively.
7. The vacuum interrupter with getter according to any one of claims 2 to 4, characterized in that: The wall surface of the installation cavity is provided with a plurality of air holes.
8. The vacuum interrupter with getter according to claim 6, characterized in that: The vacuum arc extinguishing chamber with a getter also includes a bellows and an end cover combination, the two ends of the vacuum chamber are connected, the end cover combination includes a moving end cover and a static end cover, the moving end cover and the static end cover are respectively located at the two ends of the outer shell, and the moving end cover and the static end cover are fixedly connected to the outer shell and close the two end ports of the vacuum chamber, the moving conductive rod is provided with one end of the contact passing through the moving end cover and is slidably arranged in the vacuum chamber, the static conductive rod is provided with one end of the contact passing through the static end cover and extending into the vacuum chamber, and the bellows is located between the protective cover and the moving end cover.
9. The vacuum interrupter with getter according to claim 8, characterized in that: The vacuum arc extinguishing chamber with getter comprises a shielding tube having an anti-splashing cavity with two ends passing therethrough, the shielding tube is connected to the shell, and one end of the moving conductive rod and the static conductive rod provided with the contact both extend into the anti-splashing cavity.