Static conducting rod for vacuum arc-extinguishing chamber

Abstract

The utility model relates to the technical field of vacuum switch tube accessories, in particular to a static conducting rod for a vacuum arc extinguish chamber, which comprises a conducting rod main body, a connecting insertion column is coaxially and fixedly connected to the conducting rod main body, and a first threaded mounting hole is formed in the connecting insertion column. The end, away from the connecting insertion column, of the conducting rod body is coaxially and fixedly connected with a limiting chuck, a mounting disc is coaxially arranged below the limiting chuck, and a mounting mechanism used for facilitating mounting and dismounting of the conducting rod body is arranged between the limiting chuck and the mounting disc. The limiting chuck and the mounting disc are assembled through the connecting screw rod, and the static conducting rod and the limiting chuck are taken out from the movable conducting rod end of the vacuum switch tube, so that the good stability of the static conducting rod end is ensured, the vacuum switch tube does not need to be integrally replaced when a certain part in the vacuum switch tube is seriously lost, and the working efficiency is improved. The material utilization rate is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vacuum switch tube accessories, in particular to a static conducting rod for a vacuum arc-extinguishing chamber. BACKGROUND

[0002] The vacuum arc-extinguishing chamber, also known as a vacuum switch tube, is a core component of a medium and high voltage power switch. Its main function is to make the medium and high voltage circuit cut off the power supply quickly and suppress the current after arc extinction, thereby avoiding accidents and incidents. The static conducting rod is fixedly installed in the insulating sleeve of the vacuum switch tube and cooperates with the dynamic conducting rod to guide the current.

[0003] Referring to the Chinese patent application with publication number CN205264598U, a conducting rod with a dynamic / static contact seat and a vacuum arc-extinguishing chamber with the same are disclosed. The conducting rod is integrally formed by cold extrusion, and the conducting rod and the dynamic / static contact seat are integrally formed without the need for additional silver, thereby reducing the cost and saving resources. The verticality of the integrally formed product is more accurate, the resistance is smaller, and the quality is higher.

[0004] However, in the prior art, metal vapor is generated between the dynamic conducting rod and the static conducting rod during the arc burning process. The contacts and the static conducting rod are gradually consumed during long-term operation of the vacuum switch tube. When the static conducting rod is repaired and replaced, the entire static conducting rod needs to be replaced, which reduces the material utilization rate and affects the economic benefits of electronic enterprises. Therefore, a static conducting rod for a vacuum arc-extinguishing chamber is designed. Content of the utility model

[0005] The static conducting rod for a vacuum arc-extinguishing chamber provided by the present application can be assembled with the conducting contact and the mounting disc through the connecting piece, without the need for a complex welding process. When a certain part of the static conducting rod is repaired and replaced, the entire static conducting rod does not need to be replaced, thereby reducing the material utilization rate.

[0006] The static conducting rod for a vacuum arc-extinguishing chamber provided by the present application comprises a conducting rod main body, a connecting plug column is fixedly connected coaxially on the conducting rod main body, a first threaded mounting hole is formed in the connecting plug column, a limiting chuck is fixedly connected coaxially on one end of the conducting rod main body away from the connecting plug column, a mounting disc is coaxially arranged below the limiting chuck, and a mounting mechanism for facilitating the mounting and dismounting of the conducting rod main body is arranged between the limiting chuck and the mounting disc.

[0007] When the vacuum switch tube is working, the contact seat outside the contact structure absorbs part of the arc energy, condenses arc products, and is beneficial to improve the medium recovery strength between the contacts; when the contacts are gradually consumed during long-term work of the vacuum switch tube, and the degree of contact loss is larger than that of other parts, the vacuum switch tube needs to be opened for maintenance and replacement of the contact structure, the sealing cover is unscrewed, the moving conducting rod end of the vacuum switch tube is opened, the connecting screw rod is unscrewed, the mounting disc and the limiting chuck are separated, and the static conducting rod and the limiting chuck are taken out from the moving conducting rod end of the vacuum switch tube.

[0008] The technical solutions described above in the embodiments of the application have at least the following technical effects:

[0009] 1. In the application, the installation screw is used to realize the assembly of the connecting plug post and the conductive contact, when the contacts are gradually consumed during long-term work of the vacuum switch tube, and the degree of contact loss is larger than that of other parts, the installation screw is screwed with the first threaded mounting hole on the connecting plug post to realize the installation and dismounting of the static conducting rod and the conductive contact, which is simple and convenient, and does not need to go through a complex welding process, thereby avoiding reducing the conductivity of the static conducting rod end.

[0010] 2. In the application, the limiting chuck and the mounting disc are assembled through the connecting screw rod, when the vacuum switch tube is maintained, the sealing cover is unscrewed, the moving conducting rod end of the vacuum switch tube is opened, the connecting screw rod is unscrewed, the mounting disc and the limiting chuck are separated, and the static conducting rod and the limiting chuck are taken out from the moving conducting rod end of the vacuum switch tube, which ensures the good stability of the static conducting rod end and facilitates that when a certain part in the vacuum switch tube is severely worn, the vacuum switch tube does not need to be replaced as a whole, thereby improving the material utilization rate.

[0011] In some embodiments, a mounting groove is coaxially arranged at one end of the connecting plug post away from the conducting rod body, the first threaded mounting hole penetrates the mounting groove, and a clamping groove is coaxially arranged at one end of the conducting rod body close to the connecting plug post.

[0012] The installation screw is screwed with the first threaded mounting hole on the connecting plug post to realize the installation and dismounting of the static conducting rod and the conductive contact, which is simple and convenient, and does not need to go through a complex welding process, thereby avoiding reducing the conductivity of the static conducting rod end.

[0013] In some embodiments, a threaded groove is coaxially arranged at one end of the limiting chuck away from the conducting rod body.

[0014] In some embodiments, the mounting mechanism comprises:

[0015] The connecting screw is coaxially fixed with a threaded plug, a screw thread matched with the threaded plug is arranged in the threaded groove, and a second threaded mounting hole is arranged at the end of the connecting screw away from the threaded plug;

[0016] The mounting disc is coaxially fixed with the connecting screw, a plurality of mounting holes are arranged on the mounting disc, and the assembly of the connecting plug and the conductive contact is realized by rotating the mounting bolt.

[0017] In some embodiments, a group of grooves is arranged at the end of the connecting screw away from the threaded plug, and the second threaded mounting hole is arranged on the group of grooves.

[0018] In some embodiments, the mounting disc and the limiting chuck are both provided with an insulating sealing pad at the end close to each other, so as to ensure the sealing property of the vacuum switch tube.

[0019] In some embodiments, the conductive rod body is coaxially sleeved with a limiting sleeve at the end close to the limiting chuck, so as to ensure the stability of the conductive rod body and prevent the conductive rod body from being easily deviated when being installed and disassembled. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 A structure schematic diagram of a static conductive rod for a vacuum arc-extinguishing chamber provided by the embodiments of the present application;

[0022] Figure 2 A top-down isometric schematic diagram of a static conductive rod for a vacuum arc-extinguishing chamber provided by the embodiments of the present application;

[0023] Figure 3 A conductive rod body structure schematic diagram of a static conductive rod for a vacuum arc-extinguishing chamber provided by the embodiments of the present application;

[0024] Figure 4 A connecting screw structure schematic diagram of a static conductive rod for a vacuum arc-extinguishing chamber provided by the embodiments of the present application;

[0025] Figure 5 A side view of a static conductive rod for a vacuum arc-extinguishing chamber provided by the embodiments of the present application;

[0026] Figure 6 For Figure 5 Sectional view along A-A direction.

[0027] In the drawings, reference numerals:

[0028] 1, the conductive rod body; 2, connecting column; 3, mounting groove; 4, first threaded mounting hole; 5, clamping groove; 6, limit chuck; 7, connecting screw; 8, mounting disc; 9, mounting hole; 10, threaded slot; 11, threaded plug; 12, second threaded mounting hole. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the following will be further described in detail in conjunction with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The description and the drawings of the specification and the above-described drawings are intended to cover all modifications and alternatives of the present application comprising the same scope as the principles of the application. The terms "comprising" and "having," and any variations thereof used herein are intended to cover a non-exclusive inclusion.

[0031] It should be noted that when an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0034] In the present application, "and / or" only describes the relationship of the associated objects, which means that there can be three relationships; for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the associated objects before and after are an "or" relationship.

[0035] It should be noted that the words "in the present embodiment", "exemplarily", "for example" and the like in the present application are used to represent as an example, illustration or description. Any embodiment or design scheme described as "in the present embodiment", "exemplarily", "for example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the use of "in the present embodiment", "exemplarily", "for example" and the like is intended to present the relevant concept in a specific manner, meaning that the specific features, structures or properties described in conjunction with the embodiments can be included in at least one embodiment of the present application. The appearance of the above words at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment that is not mutually exclusive or alternative to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0036] The vacuum arc-extinguishing chamber is a core component of a medium and high voltage power switch, and its main function is to make the medium and high voltage circuit cut off the power supply and quickly extinguish the arc and suppress the current through the excellent insulation of the vacuum in the tube, so as to avoid accidents and accidents. The static conducting rod is fixedly installed in the insulating sleeve of the vacuum switch tube, and cooperates with the moving conducting rod to play a role of conducting current.

[0037] A conducting rod with a moving / static contact seat and a vacuum arc-extinguishing chamber with the conducting rod in the related art are integrally formed by cold extrusion, and do not need additional silver, which is low in cost and saves resources. Moreover, the verticality of the integrally formed product is more accurate, the resistance is smaller, and the quality is higher.

[0038] Based on this, in order to improve the problem that in the related art, the contacts and the static conducting rod of the vacuum switch tube will be gradually consumed during long-term work, when they are repaired and replaced, the whole needs to be replaced together, which reduces the material utilization rate and affects the economic benefit of the electronic enterprise, the present application provides the following scheme.

[0039] Please refer to Figures 1 to 6The utility model provides a static conductive pole for vacuum interrupter, including: conductive pole main part 1, coaxially fixed connection has connecting column 2 on conductive pole main part 1, and the first threaded mounting hole 4 is seted up on connecting column 2, and the end of conductive pole main part 1 away from connecting column 2 is coaxially fixed connection has limit chuck 6, and the installation disc 8 is seted up coaxially in the lower limit chuck 6, and the installation mechanism is arranged between limit chuck 6 and installation disc 8, and the installation mechanism is used for facilitating the installation and disassembly of conductive pole main part 1, when the wear of the certain component in vacuum switch tube is serious, the whole vacuum switch tube does not need to be replaced, and the material utilization rate is improved;

[0040] The installation mechanism includes a connecting screw 7 and the installation disc 8, the connecting screw 7 is coaxially fixedly connected with a threaded plug rod 11, the threaded groove 10 is provided with a screw thread matched with the threaded plug rod 11, the second threaded mounting hole 12 is formed in the end of the connecting screw 7 away from the threaded plug rod 11, and the installation disc 8 is coaxially fixedly connected with the connecting screw 7, and a plurality of mounting holes 9 are formed in the installation disc 8.

[0041] The effect of the above arrangement is that the limit chuck 6 and the installation disc 8 are assembled through the connecting screw 7, when a certain accessory in the vacuum switch tube is maintained, the sealing cover is unscrewed, the movable conductive end plate of the vacuum switch tube is opened, the mounting bolts on the installation disc 8 are disassembled, the installation disc 8 is separated from the insulating shell, the connecting screw 7 is unscrewed, the installation disc 8 and the limit chuck 6 are separated, and the static conductive pole and the limit chuck 6 are taken out from the movable conductive rod end of the vacuum switch tube, so that the maintenance and replacement of each accessory in the vacuum switch tube are facilitated.

[0042] Please refer to Figure 2 and Figure 6 , the end of the connecting column 2 away from the conductive pole main part 1 is coaxially provided with an installation groove 3, the first threaded mounting hole 4 penetrates the installation groove 3, and the end of the conductive pole main part 1 close to the connecting column 2 is coaxially provided with a clamping groove 5.

[0043] The effect of the above arrangement is that the installation groove 3 formed in the connecting column 2 and the clamping groove 5 coaxially formed in the end of the conductive pole main part 1 close to the connecting column 2 facilitate the increase of the contact area of the conductive pole main part 1 of the static conductive pole and the contact structure, improve the connection stability of the static conductive pole and the contact structure, and the mounting and disassembly of the static conductive pole and the contact structure are realized through the threaded connection of the mounting bolts and the first threaded mounting hole 3 on the connecting column 2, which is simple and convenient to operate.

[0044] Please refer to Figure 3 , the end of the limit chuck 6 away from the conductive pole main part 1 is coaxially provided with a threaded groove 10.

[0045] The effect of the arrangement is that the assembly between the limiting chuck 6, the conductive rod body 1 and the mounting disc 8 is realized through the threaded installation of the threaded rod 11 at the top of the connecting screw rod 7 and the threaded groove 10, and the good stability of the static conductive rod end is ensured, so that the vacuum switch tube does not need to be replaced as a whole when some components in the vacuum switch tube are severely worn.

[0046] Please refer to Figure 1 and Figure 4 , a group of grooves are arranged at the end of the connecting screw rod 7 away from the threaded rod 11, and the second threaded mounting hole 12 is arranged on the group of grooves;

[0047] The effect of the arrangement is that the threaded connection between the vacuum switch tube and the conductive mechanism is realized through the arrangement of the connecting screw rod 7, and the good stability of the static conductive rod end is ensured.

[0048] Please refer to Figure 1 and Figure 4 , the mounting disc 8 and the limiting chuck 6 are both provided with an insulating sealing pad at the end close to each other;

[0049] The effect of the arrangement is that the sealing property of the vacuum switch tube is ensured through the arrangement of the insulating sealing pad at the end of the mounting disc 8 and the limiting chuck 6 close to each other.

[0050] Please refer to Figure 1 , the conductive rod body 1 is coaxially sleeved with a limiting sleeve at the end close to the limiting chuck 6;

[0051] The effect of the arrangement is that the stability of the conductive rod body 1 is ensured through the coaxial sleeving of the limiting sleeve at the end of the conductive rod body 1 close to the limiting chuck 6, and the conductive rod body 1 is prevented from being easily deviated when being installed and disassembled.

[0052] From the above, the working principle of the present application is as follows:

[0053] When the vacuum switch tube is maintained, the sealing cover is unscrewed, the dynamic conductive end plate of the vacuum switch tube is opened, the connecting screw rod 7 is unscrewed, the mounting disc 8 and the limiting chuck 6 are separated, and the static conductive rod and the limiting chuck 6 are taken out from the dynamic conductive rod end of the vacuum switch tube;

[0054] When the contact is gradually consumed during the long-term work of the vacuum switch tube, the static conductive rod and the contact structure are disassembled through the unscrewing of the mounting bolt, so that the mounting bolt is separated from the first threaded mounting hole 3 on the connecting column 2, and the disassembly and replacement of the static conductive rod and the conductive contact are facilitated.

[0055] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A static conducting rod for a vacuum interrupter, comprising a conducting rod body (1), characterized in that: The electrically conductive rod body (1) is coaxially connected with a connecting column (2), the connecting column (2) is provided with a first threaded mounting hole (4), the electrically conductive rod body (1) is coaxially connected with a limiting chuck (6) at one end away from the connecting column (2), the limiting chuck (6) is coaxially provided with a mounting disc (8) below, and the limiting chuck (6) and the mounting disc (8) are provided with a mounting mechanism for facilitating mounting and dismounting of the electrically conductive rod body (1).

2. A static conducting rod for a vacuum interrupter according to claim 1, characterized in that: The connecting column (2) is coaxially provided with a mounting groove (3) at one end away from the electrically conductive rod body (1), the first threaded mounting hole (4) penetrates the mounting groove (3), and the electrically conductive rod body (1) is coaxially provided with a clamping groove (5) at one end close to the connecting column (2).

3. The static conducting rod for a vacuum interrupter according to claim 1, characterized in that: The limiting chuck (6) is coaxially provided with a threaded groove (10) at one end away from the electrically conductive rod body (1).

4. A static conductor for a vacuum interrupter according to claim 3, characterized in that: The mounting mechanism comprises: A connecting screw rod (7) is coaxially connected with a threaded plug rod (11), the threaded groove (10) is provided with a screw thread matched with the threaded plug rod (11), and the connecting screw rod (7) is provided with a second threaded mounting hole (12) at one end away from the threaded plug rod (11); A mounting disc (8) is coaxially connected with the connecting screw rod (7), and the mounting disc (8) is provided with a plurality of mounting holes (9).

5. A static conductor for a vacuum interrupter according to claim 4, characterized in that: The connecting screw rod (7) is provided with a group of grooves at one end away from the threaded plug rod (11), and the second threaded mounting hole (12) is provided on the group of grooves.

6. A static conductor for a vacuum interrupter according to claim 4, characterized in that: The mounting disc (8) and the limiting chuck (6) are provided with insulating sealing pads at one end close to each other.

7. The static conductor for a vacuum interrupter according to claim 1, wherein: The electrically conductive rod body (1) is coaxially sleeved with a limiting sleeve at one end close to the limiting chuck (6). The electrically conductive rod body (1) is coaxially sleeved with a limiting sleeve at one end close to the limiting chuck (6).

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