Novel arc extinguish chamber

Abstract

The utility model relates to a novel arc extinguish chamber, which comprises a ceramic tube, sealing covers fixedly arranged at the two ends of the ceramic tube and a movable conducting rod arranged on the sealing cover on one side of the ceramic tube, an annular ring is rotatably connected to the outer side of the sealing cover, and a dust removal edge is vertically arranged on the annular ring. The end face, facing the ceramic tube, of the dust removal edge is attached to the outer side wall of the ceramic tube, a push block is fixedly arranged on the movable conducting rod, a rotating groove is further formed in the lower end face of the push block, the upper end face of the rotating groove is spiral, and the number of the spiral turns is one, and a push rod used for abutting against the upper end face of the rotating groove is arranged on the annular ring. The rotating groove penetrates through the lower end face of the push block, the sealing ring is provided with a push rod fixing mechanism, the push rod fixing mechanism is used for helping the push rod to rotate by an angle when the push block moves downwards each time, and when a movable conducting rod and a static conducting rod on the arc extinguish chamber are subjected to separation and reunion contact breaking each time, the dust removal edge can be driven to rotate around the outer side wall of the ceramic tube by a circle. And the dust removing edges on the outer side wall of the ceramic tube are swept.

Description

Technical Field

[0001] The utility model relates to the technical field of arc extinguishing chambers, in particular to a novel arc extinguishing chamber. Background Art

[0002] The vacuum interrupter, also known as the vacuum switch tube, is the core component of medium and high voltage power switches. Its main function is to quickly extinguish the arc and suppress the current after the medium and high voltage circuit is cut off from the power supply through the excellent insulation of the vacuum inside the tube, so as to avoid accidents and unexpected events. It is mainly used in power transmission and distribution control systems, as well as in power distribution systems in metallurgy, mining, petroleum, chemical industry, railways, broadcasting, communications, industrial high-frequency heating, etc.

[0003] As the temperature of the ceramic tube in the arc extinguishing chamber increases when it is working, some dust will be absorbed on the side wall of the ceramic tube due to its electrical characteristics. This phenomenon is not conducive to the heat dissipation of the ceramic tube, which will shorten the service life of the internal components of the arc extinguishing chamber in the long run. Utility Model Content

[0004] The utility model provides a novel arc extinguishing chamber, which solves the above problems existing in the use process of the prior art.

[0005] The technical solution of the utility model is achieved as follows: a new type of arc extinguishing chamber, including a ceramic tube, a sealing cover fixedly arranged at both ends of the ceramic tube and a moving conductive rod installed on the sealing cover on one side of the ceramic tube, characterized in that an annular ring is rotatably connected to the outer side of the sealing cover, a cleaning edge is vertically arranged on the annular ring, the cleaning edge faces the end face of the ceramic tube and fits with the outer wall of the ceramic tube, a push block is fixedly arranged on the moving conductive rod, a rotating groove is also provided on the lower end face of the push block, the upper end face of the rotating groove is spiral and the number of spiral turns is one circle, a push rod for abutting against the upper end face of the rotating groove is arranged on the annular ring, the rotating groove passes through the lower end face of the push block, and a push rod fixing mechanism is arranged on the sealing cover, the push rod fixing mechanism is used to help the push rod rotate 360° each time the push block moves downward.

[0006] By adopting the above technical scheme, each time the moving conductive rod and the static conductive rod on the arc extinguishing chamber are disconnected and disconnected, the cleaning edge can be driven to rotate around the outer wall of the ceramic tube for one circle, thereby sweeping away the cleaning edge on the outer wall of the ceramic tube. At the same time, the structure has another advantage in that only one cleaning edge needs to be set on the annular ring to achieve the cleaning effect, which can effectively reduce the necessary contact area between the cleaning edge and the ceramic tube, which is beneficial to the heat dissipation of the ceramic tube.

[0007] The utility model is further configured as follows: the upper end face of the rotating groove spirally descends in a clockwise direction, the rotating groove includes an upper end face and a side wall located between the highest point and the lowest point of the upper end face, the side wall is located on the right side of the moving conductive rod and faces forward, the push rod mechanism includes a support beam elastically slidably arranged on the sealing cover, the support beam is located on the right side of the side wall of the rotating groove, and a slope is formed on the front end of the support beam close to the outer side of the ceramic tube, a supporting mechanism for making the push rod support against the rear side wall of the support beam is arranged above the support beam, and an attraction mechanism for driving the push rod to rotate to the rear side of the support beam is arranged on the sealing cover.

[0008] By adopting the above technical solution, the structure enables the push rod to rotate around the outer side wall of the ceramic tube once each time the movable conductive rod moves downward.

[0009] The utility model is further configured as follows: the supporting mechanism includes a rotating rod rotatably arranged on the sealing cover, the rotating rod is located on the rear side of the supporting beam, a limiting wall is arranged between the rotating rod and the supporting beam, and a first elastic supporting member for pressing the rotating rod against the limiting wall is arranged on the side of the rotating rod away from the limiting wall.

[0010] By adopting the above technical solution, the structure can be used to fix the push rod between the rotating rod and the supporting beam.

[0011] The utility model is further configured as follows: the attraction mechanism comprises a first magnetic block, the magnetic block is fixedly arranged on the sealing cover and located at the rear side of the supporting beam, and the push rod is provided with a second magnetic block.

[0012] By adopting the above technical solution, the structure can be used to drive the push rod to squeeze between the support beam and the rotating rod.

[0013] The utility model is further configured as follows: a slide groove is arranged on the sealing cover, one end of the support beam is slidably arranged in the slide groove, and the other end extends to the right and passes through the slide groove, and a second elastic support member for pushing the support beam to the right is arranged in the slide groove.

[0014] By adopting the above technical solution, the structure can be used to allow the support beam to slide elastically on the sealing cover, so that each time the push rod is squeezed between the support beam and the rotating rod, the support beam can be reset to the right to prevent the push rod from rotating clockwise.

[0015] The utility model is further configured as follows: the first elastic supporting member is a torsion spring.

[0016] By adopting the above technical solution, the torsion spring can be used to hold the rotating rod against the limiting wall.

[0017] The utility model is further configured that: the second elastic supporting member is a spring.

[0018] By adopting the above technical solution, the spring can be used to push the supporting beam to return to the right. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the utility model at another angle;

[0022] Figure 3 for Figure 1 A local enlarged schematic diagram of the middle A;

[0023] Figure 4 for Figure 2 A local enlarged schematic diagram of point B in the middle.

[0024] Numbers in the figure: 1 ceramic tube, 2 sealing cover, 3 dynamic conductive rod, 41 annular ring, 42 cleaning edge, 43 push rod, 5 push block, 51 rotating groove, 61 support beam, 611 inclined surface, 62 rotating rod, 63 limiting wall, 64 first elastic support member, 65 second elastic support member, 66 slide groove, 67 first magnetic block, 68 second magnetic block, 69 side wall. DETAILED DESCRIPTION

[0025] The following will be combined with the attached embodiment of the utility model Figure 1-4 , the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example:

[0027] like Figures 1 to 4 As shown, the utility model discloses a novel arc extinguishing chamber, including a ceramic tube 1, sealing covers 2 fixedly arranged at both ends of the ceramic tube 1, and a moving conductive rod 3 installed on the sealing cover 2 on one side of the ceramic tube 1. In addition to the above structure, a shielding tube, a static contact, a moving contact and other structures are also arranged in the ceramic tube 1. The arrangements of these structures are the same as those of the arc extinguishing chamber in the prior art, so they are not described in detail.

[0028] The outer sides of the sealing covers 2 at both ends of the ceramic tube 1 are rotatably connected with annular rings 41, and a cleaning edge 42 is commonly connected between the two annular rings 41. At the same time, the cleaning edge 42 is in contact with the outer wall of the ceramic tube 1 facing the end face of the ceramic tube 1. In this way, when the annular ring 41 rotates, the cleaning edge 42 can rotate around the outer wall of the ceramic tube 1 and sweep away the dust on the outside of the ceramic tube 1.

[0029] A push block 5 is fixedly arranged on the moving conductive rod 3, and a rotation groove 51 is also provided on the lower end surface of the push block 5. The rotation groove 51 penetrates the lower end surface of the push block 5, and the upper end surface of the rotation groove 51 is a spiral surface with one spiral turn. Correspondingly, a push rod 43 for abutting against the upper end surface of the rotation groove 51 is provided on the annular ring 41 on the side of the cleaning edge 42 close to the push block 5.

[0030] In this structure, the upper end surface of the rotating groove 51 spirally descends in a clockwise direction. At the same time, the rotating groove 51 includes an upper end surface and a side wall 69 located between the highest point and the lowest point of the upper end surface, and the side wall 69 is located on the right side of the moving conductive rod 3 and facing forward.

[0031] The sealing cover 2 is elastically provided with a support beam 61 that slides on the right side of the push block 5. Correspondingly, a slide groove 66 is provided on the sealing cover 2. In this structure, one end of the support beam 61 is slidably provided in the slide groove 66 and the other end extends to the right and passes through the slide groove 66. At the same time, a second elastic support member 65 for pushing the support beam 61 to the right is provided in the slide groove 66. The second elastic support member 65 can be a spring. A slope 611 is formed at the front end of the support beam 61 near the outer side of the ceramic tube 1. When the push rod 43 rotates counterclockwise until it abuts against the slope 611, the push rod 43 can push the support beam 61 to slide to the left, and thereby the support beam 61 is released to the push rod 43. However, since the slope 61 is not provided on the rear end surface of the support beam 61, the push rod 43 cannot push the support beam 61 at the rear side of the support beam 61 to release the push rod 43. A supporting mechanism for supporting the push rod 43 against the rear side wall of the supporting beam 61 is provided above the supporting beam 61 , and a suction mechanism for driving the push rod 43 to rotate to the rear side of the supporting beam 61 is provided on the sealing cover 2 .

[0032] The sealing cover 2 is provided with a rotating rod 62 on the rear side of the support beam 61, and a limiting wall 63 is provided between the rotating rod 62 and the support beam 61. The limiting wall 63 in this structure is used to limit the forward rotation angle of the rotating rod 62, so that a certain space is maintained between the rotating rod 62 and the support beam 61 for accommodating the push rod 43. At the same time, a first elastic supporting member 64 for pressing the rotating rod 62 against the limiting wall 63 is provided on the side of the rotating rod 62 away from the limiting wall 63, and the first elastic supporting member 64 can be a torsion spring.

[0033] A first magnetic block 67 is fixedly disposed on the sealing cover 2 , and the first magnetic block 67 is located at the rear side of the supporting beam 61 . Meanwhile, a second magnetic block 68 is disposed on the push rod 43 , and the second magnetic block 68 is used for adsorbing with the first magnetic block 67 .

[0034] The working principle of the above structure is as follows: first, the push rod 43 is fixed between the abutment beam 61 and the rotating rod 62. When the moving conductive rod 3 moves downward to the upper end surface of the rotating groove 51 and abuts against the push rod 43, the push rod 43 will be affected by the upper end surface of the rotating groove 51 and rotate counterclockwise during the moving conductive rod 3 moving downward. At this time, the dust cleaning edge 42 can sweep away the dust on the outer wall of the ceramic tube 1. When the moving conductive rod 3 moves to the lowermost end, the push rod 43 abuts against the highest point of the upper end surface of the rotating groove 51. At this time, since the push rod 43 is closer to the first magnetic block 67, an attraction will be generated between the first magnetic block 67 and the second magnetic block 68. However, due to the restriction of the side wall 69 of the rotating groove 51, the push rod 43 cannot continue to approach the first magnetic block 67 temporarily. When the moving conductive rod 3 starts to move upward until the side wall 69 of the rotating groove 51 no longer blocks the push rod 43, the push rod 43 can continue to rotate counterclockwise under the attraction of the first magnetic block 67 until the push rod 43 moves to the original position.

[0035] Finally, when manufacturing the rotating groove 51 on the pushing block, attention should be paid to the fact that the friction coefficient between the rotating groove 51 and the pushing rod needs to match the spiral inclination angle of the upper end face of the rotating groove 51, so that the upper end face of the rotating groove 51 can ensure that it can push the pushing rod 43.

[0036] It should also be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel arc extinguishing chamber, comprising a ceramic tube (1), sealing covers (2) fixedly arranged at both ends of the ceramic tube (1), and a movable conductive rod (3) mounted on the sealing cover (2) at one side of the ceramic tube (1), characterized in that: The outer side of the sealing cover (2) is rotatably connected to an annular ring (41), and a cleaning edge (42) is vertically arranged on the annular ring (41). The end surface of the cleaning edge (42) facing the ceramic tube (1) is in contact with the outer wall of the ceramic tube (1). A push block (5) is fixedly arranged on the movable conductive rod (3), and a rotation groove (51) is also provided on the lower end surface of the push block (5). The upper end surface of the rotation groove (51) is spiral and has one spiral turn. A push rod (43) is arranged on the annular ring (41) for abutting against the upper end surface of the rotation groove (51), and the rotation groove (51) passes through the lower end surface of the push block (5). A push rod (43) fixing mechanism is arranged on the sealing cover (2), and the push rod (43) fixing mechanism is used to help the push rod (43) rotate 360 ​​degrees during each downward movement of the push block (5).

2. A novel arc extinguishing chamber according to claim 1, characterized in that: The upper end surface of the rotating groove (51) spirally descends in a clockwise direction. The rotating groove (51) includes an upper end surface and a side wall (69) located between the highest point and the lowest point of the upper end surface. The side wall (69) is located on the right side of the moving conductive rod (3) and faces forward. The push rod (43) mechanism includes a support beam (61) elastically slidably arranged on the sealing cover (2). The support beam (61) is located on the right side of the side wall (69) of the rotating groove (51). The front end of the support beam (61) close to the outer side of the ceramic tube (1) is formed with an inclined surface (611). A support mechanism for making the push rod (43) support against the rear side wall of the support beam (61) is arranged above the support beam (61). The sealing cover (2) is provided with a suction mechanism for driving the push rod (43) to rotate to the rear side of the support beam (61).

3. A novel arc extinguishing chamber according to claim 2, characterized in that: The abutting mechanism comprises a rotating rod (62) rotatably arranged on the sealing cover (2), the rotating rod (62) being located at the rear side of the abutting beam (61), a limiting wall (63) being arranged between the rotating rod (62) and the abutting beam (61), and a first elastic abutting member (64) for pressing the rotating rod (62) against the limiting wall (63) being arranged on a side of the rotating rod (62) away from the limiting wall (63).

4. A novel arc extinguishing chamber according to claim 3, characterized in that: The attraction mechanism comprises a first magnetic block (67) which is fixedly arranged on the sealing cover (2) and located at the rear side of the support beam (61); and a second magnetic block (68) is arranged on the push rod (43).

5. A novel arc extinguishing chamber according to claim 2, characterized in that: The sealing cover (2) is provided with a slide groove (66), one end of the support beam (61) is slidably arranged in the slide groove (66) and the other end extends rightward and passes through the slide groove (66), and a second elastic support member (65) for pushing the support beam (61) to the right is provided in the slide groove (66).

6. A novel arc extinguishing chamber according to claim 3, characterized in that: The first elastic supporting member (64) is a torsion spring.

7. A novel arc extinguishing chamber according to claim 5, characterized in that: The second elastic supporting member (65) is a spring.

Images