Vacuum arc-extinguishing chamber with flexible electrode supporting structure

Abstract

The utility model discloses a vacuum arc-extinguishing chamber with a flexible electrode supporting structure, which comprises a magnetic shell, a static conducting rod is fixedly connected to the inner bottom of the magnetic shell, a static contact is fixedly connected to the top end of the static conducting rod, a moving contact is arranged above the static contact, a guide rod is fixedly connected to the upper part of the moving contact, and a flexible electrode supporting structure is arranged on the guide rod. The top end of the guide rod is fixedly sleeved with a movable conducting rod, the movable conducting rod is connected with the movable contact, the guide rod is sleeved with a sealing cylinder, the sealing cylinder is fixedly inserted into the top of the magnetic shell, sliding grooves are formed in the outer walls of the two sides of the sealing cylinder, and sliding blocks are slidably connected into the sliding grooves; the outer side wall of the sliding block is fixedly connected with a connecting plate, the connecting plate is fixedly connected with the moving contact, and the impact kinetic energy generated by closing can be effectively absorbed through the energy dissipation arrangement of the elastic mechanism.

Description

Technical Field

[0001] The utility model relates to the field of vacuum switch related products, in particular to a vacuum arc extinguishing chamber with a flexible electrode supporting structure. 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;

[0003] However, the existing vacuum interrupter cannot absorb the kinetic energy of the closing impact, and is prone to bounce, which directly affects the stability and reliability of the vacuum interrupter. Utility Model Content

[0004] The purpose of the utility model is to provide a vacuum interrupter with a flexible electrode support structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum interrupter with a flexible electrode support structure, comprising a magnetic shell, wherein the inner bottom of the magnetic shell is fixedly connected to a static conductive rod, the top of the static conductive rod is fixedly connected to a static contact, a moving contact is arranged above the static contact, a guide rod is fixedly connected above the moving contact, the top of the guide rod is fixedly sleeved with a dynamic conductive rod, the dynamic conductive rod is connected to the moving contact, a sealing cylinder is sleeved on the guide rod, the sealing cylinder is fixedly inserted on the top of the magnetic shell, and the two ends of the sealing cylinder are fixedly inserted on the top of the magnetic shell. The side outer walls are provided with sliding grooves, a slider is slidably connected in the sliding groove, a connecting plate is fixedly connected to the outer wall of the slider, the connecting plate is fixedly connected to the moving contact, grooves are provided on the inner walls on both sides of the sliding groove, a sliding rod is fixedly connected in the groove, a traction block is slidably sleeved on the sliding rod, one end of the traction block is rotatably connected to the connecting block, a spring sheet is fixedly connected to the connecting block, one end of the spring sheet is fixedly connected to the inner wall of the sliding groove, a supporting block is fixedly connected to the bottom of the sliding block, and a pressing block is fixedly connected to the bottom end of the supporting block.

[0006] Preferably, both ends of the pressing block are arranged in an arc-shaped structure.

[0007] Preferably, the connecting block and the traction block are rotatably connected via a rotating shaft.

[0008] Preferably, a stop groove is provided on the inner side wall of the slide groove, and both ends of the slide block are slidably inserted in the stop groove.

[0009] Preferably, the static conductive rod is welded to the static contact, and the dynamic conductive rod is welded to the dynamic contact.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The vacuum arc extinguishing chamber with a flexible electrode supporting structure drives the moving contact to move through the moving conductive rod, which causes the guide rod to move in the sealing cylinder. At this time, the moving contact will drive the connecting plate to move, and the connecting plate will drive the slider to move in the slide groove on the sealing cylinder. The pressing block installed on the bottom of the supporting block will press the spring piece, which is in a bent state in the initial state. When the pressing block presses, it will drive the traction block to slide on the slide rod, and the resilience of the spring piece is used to provide elastic contact. The utility model can effectively absorb the impact kinetic energy generated by closing the switch through the energy dissipation setting of the elastic mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a vacuum interrupter with a flexible electrode support structure of the utility model;

[0013] Figure 2 This is an enlarged view of point A of a vacuum arc extinguishing chamber with a flexible electrode support structure of the utility model.

[0014] In the figure: 1, magnetic shell; 2, static conductive rod; 3, static contact; 4, moving contact; 5, guide rod; 6, moving conductive rod; 7, sealing cylinder; 8, slider; 9, connecting plate; 10, slide rod; 11, traction block; 12, connecting block; 13, spring piece; 14, support block; 15, pressure block. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0016] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] See also Figure 1-2 The utility model provides an embodiment: a vacuum interrupter with a flexible electrode support structure, including a magnetic shell 1, a static conductive rod 2 is fixedly connected to the inner bottom of the magnetic shell, a static contact 3 is fixedly connected to the top of the static conductive rod 2, a moving contact 4 is arranged above the static contact 3, a guide rod 5 is fixedly connected to the top of the moving contact 4, a moving conductive rod 6 is fixedly sleeved on the top of the guide rod 5, the moving conductive rod 6 is connected to the moving contact 4, a sealing cylinder 7 is sleeved on the guide rod 5, the sealing cylinder 7 is fixedly inserted on the top of the magnetic shell 1, a slide groove is arranged on the outer wall of the sealing cylinder 7 on both sides, a slider 8 is slidably connected in the slide groove, a connecting plate 9 is fixedly connected to the outer wall of the slider 8, the connecting plate 9 is fixedly connected to the moving contact 4, a groove is arranged on the inner wall of the slide groove on both sides, a slide rod 10 is fixedly connected in the groove, and a slide rod 10 slides on the slide rod 10 The movable sleeve is connected with a traction block 11, one end of the traction block 11 is rotatably connected to a connecting block 12, a spring piece 13 is fixedly connected to the connecting block 12, one end of the spring piece 13 is fixedly connected to the inner wall of the slide groove, the bottom of the slider 8 is fixedly connected with a support block 14, and the bottom end of the support block 14 is fixedly connected with a pressing block 15. Specifically, the movable conductive rod 6 drives the movable contact 4 to move, so that the guide rod 5 moves in the sealing tube 7. At this time, the movable contact 4 will drive the connecting plate 9 to move, and the connecting plate 9 will drive the slider 8 to move in the slide groove on the sealing tube 7. The pressing block 15 installed on the bottom of the support block 14 will press the spring piece 13. The spring piece 13 is in a bent state in the initial state. When the pressing block 15 presses, it will drive the traction block 11 to slide on the slide rod 10, and the resilience of the spring piece 13 is used to provide elastic contact.

[0019] In this embodiment, both ends of the pressing block 15 are arranged in an arc-shaped structure to reduce friction resistance; the connecting block 12 and the traction block 11 are rotatably connected by a rotating shaft; a stop groove is provided on the inner side wall of the slide groove, and the two ends of the slider 8 are slidably inserted in the stop groove; the static conductive rod 2 is welded to the static contact 3, and the moving conductive rod 6 is welded to the moving contact 4.

[0020] Working principle: First, the moving conductive rod 6 drives the moving contact 4 to move, prompting the guide rod 5 to move in the sealing tube 7. At this time, the moving contact 4 will drive the connecting plate 9 to move. The connecting plate 9 will drive the slider 8 to move in the slide groove on the sealing tube 7. The pressing block 15 installed on the bottom of the support block 14 will press the spring piece 13. The spring piece 13 is in a bent state in the initial state. When the pressing block 15 presses, it will drive the traction block 11 to slide on the slide rod 10, and the resilience of the spring piece 13 is used to provide elastic contact.

[0021] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A vacuum interrupter with a flexible electrode support structure, comprising a magnetic shell (1), characterized in that: The inner bottom of the magnetic shell is fixedly connected with a static conductive rod (2), the top of the static conductive rod (2) is fixedly connected with a static contact (3), a moving contact (4) is arranged above the static contact (3), a guide rod (5) is fixedly connected above the moving contact (4), a dynamic conductive rod (6) is fixedly sleeved on the top of the guide rod (5), the dynamic conductive rod (6) is connected to the moving contact (4), a sealing cylinder (7) is sleeved on the guide rod (5), the sealing cylinder (7) is fixedly inserted on the top of the magnetic shell (1), and sliding grooves are arranged on the outer walls of both sides of the sealing cylinder (7), a slider (8) is slidably connected in the sliding groove, and the slider A connecting plate (9) is fixedly connected to the outer wall of the sliding groove (8), and the connecting plate (9) is fixedly connected to the moving contact (4). Grooves are provided on the inner walls on both sides of the sliding groove. A sliding rod (10) is fixedly connected in the groove. A traction block (11) is slidably sleeved on the sliding rod (10). One end of the traction block (11) is rotatably connected to the connecting block (12). A spring piece (13) is fixedly connected to the connecting block (12). One end of the spring piece (13) is fixedly connected to the inner wall of the sliding groove. A supporting block (14) is fixedly connected to the bottom of the sliding block (8), and a pressing block (15) is fixedly connected to the bottom end of the supporting block (14).

2. The vacuum interrupter with a flexible electrode support structure according to claim 1, characterized in that: Both ends of the pressing block (15) are arranged in an arc-shaped structure.

3. The vacuum interrupter with a flexible electrode support structure according to claim 1, characterized in that: The connecting block (12) and the traction block (11) are rotatably connected via a rotating shaft.

4. The vacuum interrupter with a flexible electrode support structure according to claim 1, characterized in that: A stop groove is provided on the inner side wall of the slide groove, and the two ends of the slide block (8) are slidably inserted in the stop groove.

5. The vacuum interrupter with a flexible electrode support structure according to claim 1, characterized in that: The static conductive rod (2) is welded to the static contact (3), and the dynamic conductive rod (6) is welded to the dynamic contact (4).

Images