Anti-torsion vacuum arc-extinguishing chamber

Abstract

The utility model discloses an anti-twist vacuum arc-extinguishing chamber, which comprises a vacuum arc-extinguishing chamber body, a static conducting rod and a wire outlet seat, the static conducting rod is arranged at the upper end of the vacuum arc-extinguishing chamber body, the wire outlet seat is sleeved on the static conducting rod in a sliding manner, a nut is sleeved on the static conducting rod, the nut is in threaded connection with the static conducting rod, and the wire outlet seat is sleeved on the nut. The nut is located at the upper end of the wire outlet seat, the static conducting rod is slidably sleeved with a supporting ring, the supporting ring is located at the lower end of the wire outlet seat, the static conducting rod is fixedly sleeved with a fixing ring, the fixing ring is located at the lower end of the supporting ring, and the lower end of the supporting ring is fixedly connected with a plurality of connecting rods distributed in an annular mode. The lower end of the connecting rod penetrates through the fixing ring in a sliding mode, and the connecting rod is sleeved with a spring. Through the arrangement of the supporting ring, the clamping rod and other mechanisms, the situation that the internal structure is damaged due to the fact that the nut is excessively screwed can be prevented, the phenomenon of loosening is not likely to happen, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of arc extinguishing chambers, in particular to an anti-twist type vacuum arc extinguishing chamber. Background Art

[0002] Vacuum interrupter, also known as vacuum switch tube, is the core component of medium and high voltage power switch. Its main function is to use the excellent insulation of vacuum inside the tube to quickly extinguish arc and suppress current after the medium and high voltage circuit cuts off the power supply, avoiding accidents and unexpected events. Vacuum interrupter is widely used, including power transmission and distribution control system, as well as metallurgy, mining, petroleum, chemical industry, railway, broadcasting, communication, industrial high-frequency heating and other power distribution systems.

[0003] During the installation of the vacuum interrupter, it is necessary to install a lead-out seat on the static conductive rod. Currently, a nut is generally used to fasten the lead-out seat to the static conductive rod. However, if the nut is over-tightened, the internal structure of the vacuum interrupter is easily damaged, and the safety needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology and to propose an anti-twist type vacuum interrupter.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A torsion-proof vacuum arc extinguishing chamber comprises a vacuum arc extinguishing chamber body, a static conductive rod and a lead-out seat, wherein the static conductive rod is arranged at the upper end of the vacuum arc extinguishing chamber body, the lead-out seat is slidingly sleeved on the static conductive rod, a nut is sleeved on the static conductive rod, the nut and the static conductive rod are threadedly connected, the nut is located at the upper end of the lead-out seat, a supporting ring is slidingly sleeved on the static conductive rod, the supporting ring is located at the lower end of the lead-out seat, a fixing ring is fixedly sleeved on the static conductive rod, the fixing ring is located at the lower end of the supporting ring, a plurality of second connecting rods distributed in an annular shape are fixedly connected to the lower end of the supporting ring, the lower end of the second connecting rod slides through the fixing ring, a spring is sleeved on the second connecting rod, and the two ends of the spring are respectively fixedly connected to the lower end of the supporting ring and the upper end of the fixing ring.

[0007] Preferably, a first connecting rod is vertically arranged at the upper end of the static conductive rod and near the edge, an external thread is fixed on the outer wall of the first connecting rod, a screw hole corresponding to the first connecting rod is provided at the upper end of the static conductive rod, an internal thread meshing with the external thread is fixed on the inner wall of the screw hole, a 7-shaped clamping rod is rotatably sleeved on the first connecting rod, and a plurality of clamping grooves corresponding to the clamping rod are distributed in a ring shape on the upper end of the nut.

[0008] Preferably, a knob is fixedly connected to the upper end of the first connecting rod.

[0009] Preferably, a plurality of positioning blocks distributed in an annular shape are fixedly connected to the upper end of the support ring, a positioning groove corresponding to the positioning block is provided at the lower end of the outlet seat, and the upper end of the positioning block slides and extends into the positioning groove.

[0010] Preferably, a first reinforcement ring is provided on the fixed sleeve of the static conductive rod, and the upper side wall of the first reinforcement ring is fixedly connected to the lower end of the fixing ring.

[0011] Preferably, a second reinforcement ring is fixedly sleeved on the upper end of the second connecting rod, and an upper side wall of the second reinforcement ring is fixedly connected to the lower end of the supporting ring.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model can not only connect and fix the outlet seat with the static conductive rod by setting the nut, support ring, spring, connecting rod and fixing ring, but also prevent the structure in the vacuum interrupter from being damaged when over-tightened, thereby improving safety;

[0014] 2. The utility model can loosen the nut by setting the knob, connecting rod, screw hole, clamping rod and clamping groove, thereby improving the safety of the nut when in use; the utility model can prevent the internal structure from being damaged due to over-tightening of the nut by setting mechanisms such as the support ring and the clamping rod, and is not prone to loosening, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an anti-twist vacuum interrupter proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of an anti-twist vacuum interrupter proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of position A of an anti-twist vacuum interrupter proposed in the utility model.

[0018] In the figure: 1-vacuum interrupter body, 2-static conductive rod, 3-outlet seat, 4-nut, 5-support ring, 6-fixing ring, 7-clamp rod, 8-spring, 9-knob, 10-first connecting rod, 11-positioning block, 12-second reinforcement ring, 13-second connecting rod, 14-first reinforcement ring. DETAILED DESCRIPTION

[0019] 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.

[0020] Reference Figure 1-3 , a twist-proof vacuum interrupter, comprising a vacuum interrupter body 1, a static conductive rod 2 and a lead-out seat 3, wherein the static conductive rod 2 is arranged at the upper end of the vacuum interrupter body 1, the lead-out seat 3 is slidably sleeved on the static conductive rod 2, a nut 4 is sleeved on the static conductive rod 2, and is used to fix the lead-out seat 3 on the static conductive rod 2, the nut 4 is threadedly connected to the static conductive rod 2, and the nut 4 is located at the upper end of the lead-out seat 3;

[0021] In this embodiment, a vertically arranged first connecting rod 10 is provided at the upper end of the static conductive rod 2 and near the edge, which is used to drive the clamping rod 7 to move downward. A knob 9 is fixedly connected to the upper end of the first connecting rod 10, which is used to facilitate the user to rotate the first connecting rod 10. An external thread is fixed on the outer wall of the first connecting rod 10. A screw hole corresponding to the first connecting rod 10 is provided at the upper end of the static conductive rod 2, and an internal thread meshing with the external thread is fixed on the inner wall of the screw hole. A clamping rod 7 arranged in a 7-shaped manner is rotatably sleeved on the first connecting rod 10, which is used to cooperate with the clamping groove to prevent the nut 4 from loosening. A plurality of clamping grooves corresponding to the clamping rod 7 are distributed in an annular manner on the upper end of the nut 4;

[0022] In this embodiment, a sliding sleeve on the static conductive rod 2 is provided with a support ring 5 for supporting the outlet seat 3, the support ring 5 is located at the lower end of the outlet seat 3, and a plurality of positioning blocks 11 distributed in an annular shape are fixedly connected to the upper end of the support ring 5, which are used to cooperate with the positioning groove to position the nut 4 and prevent it from rotating. A positioning groove corresponding to the positioning block 11 is provided at the lower end of the outlet seat 3, and the upper end of the positioning block 11 slides and extends into the positioning groove. A fixing sleeve on the static conductive rod 2 is provided with a fixing ring 6 for supporting the spring 8, and the fixing ring 6 is located at the lower end of the support ring 5. A first reinforcement ring 14 is provided on the fixed sleeve of the static conductive rod 2 for improving the firmness between the fixing ring 6 and the static conductive rod 2, and the upper side wall of the first reinforcement ring 14 is fixedly connected to the lower end of the fixing ring 6;

[0023] In this embodiment, the lower end of the support ring 5 is fixedly connected with a plurality of second connecting rods 13 distributed in a ring shape, which are used to prevent the spring 8 from tilting. The upper end of the second connecting rod 13 is fixedly sleeved with a second reinforcement ring 12, which is used to improve the firmness between the second connecting rod 13 and the support ring 5. The upper side wall of the second reinforcement ring 12 is fixedly connected to the lower end of the support ring 5, and the lower end of the second connecting rod 13 slides through the fixing ring 6. The second connecting rod 13 is sleeved with a spring 8, which is used to elastically support the support ring 5. The two ends of the spring 8 are respectively fixedly connected to the lower end of the support ring 5 and the upper end of the fixing ring 6.

[0024] In this embodiment, a wrench is first used to tighten the nut 4, and the nut 4 moves downward on the static conductive rod 2 through the action of thread engagement, and during the downward movement, it abuts against the upper end of the outlet seat 3, thereby locking the outlet seat 3. When the user over-tightens the nut 4, the nut 4 continues to move downward to apply downward pressure to the outlet seat 3 (the nut 4 cannot continue to rotate and move downward, and the pressure generated by the continuous twisting is transmitted to the static conductive rod 2 through the outlet seat 3, which can easily cause the static conductive rod 2 to be twisted off, and in severe cases, the internal structure is damaged). At this time, through the support ring 5 plays an elastic supporting role for the outlet seat 3, so the outlet seat 3 will move down when affected by the downward pressure of the nut, thereby avoiding damage to the static conductive rod 2 and the structure in the vacuum arc extinguishing chamber 1. At the same time, the spring 8 plays an elastic supporting role for the support ring 5 and the outlet seat 3, which can avoid the outlet seat 3 from loosening; at the same time, the first connecting rod 10 is manually screwed into the screw hole, and the first connecting rod 10 moves down under the action of thread engagement, and the first connecting rod 10 drives the clamping rod 7 to move down into the clamping groove, thereby preventing the nut 4 from loosening and improving reliability.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A twist-proof vacuum interrupter, comprising a vacuum interrupter body (1), a static conducting rod (2) and a lead-out socket (3), characterized in that: The static conductive rod (2) is arranged at the upper end of the vacuum arc extinguishing chamber body (1); the outlet seat (3) is slidably sleeved on the static conductive rod (2); a nut (4) is sleeved on the static conductive rod (2); the nut (4) and the static conductive rod (2) are threadedly connected; the nut (4) is located at the upper end of the outlet seat (3); a support ring (5) is slidably sleeved on the static conductive rod (2); the support ring (5) is located at the lower end of the outlet seat (3); a fixed ring (6) is fixedly sleeved on the static conductive rod (2); the fixed ring (6) is located at the lower end of the support ring (5); a plurality of second connecting rods (13) distributed in an annular shape are fixedly connected to the lower end of the support ring (5); the lower end of the second connecting rod (13) slides The fixing ring (6) is penetrated, and a spring (8) is sleeved on the second connecting rod (13), and the two ends of the spring (8) are respectively fixedly connected to the lower end of the support ring (5) and the upper end of the fixing ring (6); a vertically arranged first connecting rod (10) is arranged at the upper end of the static conductive rod (2) and near the edge, and an external thread is fixed on the outer wall of the first connecting rod (10), and a screw hole corresponding to the first connecting rod (10) is arranged on the upper end of the static conductive rod (2), and an internal thread meshing with the external thread is fixed on the inner wall of the screw hole, and a 7-shaped clamping rod (7) is rotatably sleeved on the first connecting rod (10), and a plurality of clamping grooves corresponding to the clamping rod (7) are distributed in an annular manner on the upper end of the nut (4).

2. The anti-twist vacuum interrupter according to claim 1, characterized in that: The upper end of the first connecting rod (10) is fixedly connected to a knob (9).

3. The anti-twist vacuum interrupter according to claim 1, characterized in that: A plurality of positioning blocks (11) distributed in an annular shape are fixedly connected to the upper end of the support ring (5); a positioning groove corresponding to the positioning block (11) is provided at the lower end of the outlet seat (3); and the upper end of the positioning block (11) slides and extends into the positioning groove.

4. The anti-twist vacuum interrupter according to claim 1, characterized in that: A first reinforcement ring (14) is fixedly sleeved on the static conductive rod (2), and an upper side wall of the first reinforcement ring (14) is fixedly connected to the lower end of the fixing ring (6).

5. The anti-twist vacuum interrupter according to claim 1, characterized in that: A second reinforcement ring (12) is fixedly sleeved on the upper end of the second connecting rod (13), and the upper side wall of the second reinforcement ring (12) is fixedly connected to the lower end of the support ring (5).

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