Low-impedance high-voltage isolating switch

Abstract

The utility model discloses a low-impedance high-voltage isolating switch which comprises a base, a first insulating column and a second insulating column are fixedly arranged on the base, a knife switch seat is fixedly arranged at the top end of the first insulating column, a knife switch is rotatably arranged on the inner side of the knife switch seat, and a driving assembly for driving the knife switch to rotate is arranged at the top end of the first insulating column. A conductive plate is arranged at the top end of the second insulating column, a conductive seat matched with the knife switch is fixedly arranged at one end, away from the second insulating column, of the conductive plate, a first conductive sheet is fixedly arranged on the inner side wall of the conductive seat, and a second conductive sheet is fixedly arranged at the bottom of the inner side of the conductive seat. According to the high-voltage isolation switch structure, a worker does not need to manually switch on and off the knife switch, the safety coefficient of the high-voltage isolation switch is improved, the contact area of the high-voltage isolation switch and the knife switch is increased by arranging the first conducting strip and the second conducting strip, the resistance of the contact part is effectively reduced, and the service life of the high-voltage isolation switch is prolonged. And the stability of the high-voltage isolation switch is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-voltage isolating switches, and in particular relates to a low-impedance high-voltage isolating switch. Background Art

[0002] High-voltage disconnectors are electrical appliances mainly used to open and close conductive circuits. They are the general term for high-voltage switches and their corresponding control, measurement, protection, and regulation devices, as well as accessories, casings, support components, and their electrical and mechanical connections. They are important control equipment for connecting and disconnecting circuits, removing and isolating faults.

[0003] However, most of the existing high-voltage isolating switches are opened and closed manually, which poses a safety hazard of leakage during operation. Secondly, the blade head and its connecting parts of the existing high-voltage isolating switches have high resistance and poor conductivity, which may cause the isolating switches to overheat and be damaged during operation. Therefore, technical personnel in this field provide a low-impedance high-voltage isolating switch. Utility Model Content

[0004] Most of the existing high-voltage isolating switches are opened and closed manually, which causes a safety hazard of leakage during operation. Secondly, the knife head and its connecting parts of the existing high-voltage isolating switch have high resistance and poor conductivity, which may cause the isolating switch to overheat and be damaged during operation. The utility model provides a low-impedance high-voltage isolating switch.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a low-impedance high-voltage isolating switch, comprising a base, on which a first insulating column and a second insulating column are fixedly arranged, a knife seat is fixedly arranged on the top of the first insulating column, a knife is rotatably arranged on the inner side of the knife seat, a driving component for driving the knife to rotate is arranged on the top of the first insulating column, a conductive plate is arranged on the top of the second insulating column, a conductive seat adapted to the knife is fixedly arranged at one end of the conductive plate away from the second insulating column, the conductive seat is in a U-shaped structure, a first conductive sheet is fixedly arranged on the inner side wall of the conductive seat, and a second conductive sheet is fixedly arranged on the inner bottom of the conductive seat.

[0006] Preferably, the driving assembly includes a motor and an insulating shaft, the motor is fixedly arranged at the top end of the first insulating column, the insulating shaft is rotatably arranged at the side end of the knife seat and fixed to the rotating shaft of the knife, and the output end of the motor is fixed to the insulating shaft.

[0007] Preferably, a conductive column is fixedly arranged at the bottom of the conductive plate, and a conductive groove which is slidably fitted with the conductive column is formed at the top of the second insulating column.

[0008] Preferably, a spring is sleeved on the outer side of the conductive column, and the spring is fixedly connected to the conductive plate and the upper end of the conductive slot respectively.

[0009] Preferably, two first conductive sheets are provided, both of which are copper sheets, and the copper sheets are provided with protrusions, and both of the first conductive sheets are used for contacting the switch blades.

[0010] Preferably, the second conductive sheet is used for contacting the switch, and the second conductive sheet is a copper sheet.

[0011] Preferably, two connecting rods respectively connecting the first insulating column and the second insulating column are provided at the bottom of the base.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The insulating shaft is driven by the motor to rotate, and the insulating shaft drives the knife to rotate to turn the power on or off. The high-voltage isolating switch structure allows the staff to switch the knife without manual operation, thereby improving the safety factor of the high-voltage isolating switch.

[0014] 2. By providing two first conductive sheets and a second conductive sheet, the contact area with the switch blade is increased, the resistance of the contact part is effectively reduced, the heat generation is reduced, and the stability of the high-voltage disconnector is improved.

[0015] 3. When the knife contacts the conductive seat, the conductive seat drives the conductive plate to squeeze the spring and cooperates with the conductive column to slide in the conductive groove to buffer the contact force when the knife is closed and reduce component damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the knife part of the utility model;

[0018] Figure 3 This is a schematic structural diagram of a cross-section of the second insulating column of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the conductive plate part of the utility model.

[0020] In the figure: 1. base; 2. first insulating column; 3. second insulating column; 4. knife seat; 5. knife; 6. conductive plate; 7. conductive seat; 8. first conductive sheet; 9. second conductive sheet; 10. motor; 11. insulating shaft; 12. conductive column; 13. conductive slot; 14. spring; 15. connecting rod. DETAILED DESCRIPTION

[0021] 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.

[0022] Reference Figure 1-4 A low-impedance high-voltage disconnect switch comprises a base 1, on which a first insulating column 2 and a second insulating column 3 are fixedly arranged, a knife seat 4 is fixedly arranged on the top of the first insulating column 2, a knife 5 is rotatably arranged inside the knife seat 4, a driving component for driving the knife 5 to rotate is arranged on the top of the first insulating column 2, the driving component comprises a motor 10 and an insulating shaft 11, the motor 10 is fixedly arranged on the top of the first insulating column 2, the insulating shaft 11 is rotatably arranged on the side end of the knife seat 4 and is fixed to the rotating shaft of the knife 5, and the output end of the motor 10 is fixed to the insulating shaft 11.

[0023] Specifically, the insulating shaft 11 is driven to rotate by the motor 10, and the insulating shaft 11 drives the knife switch 5 to rotate to turn on or off the power. The high-voltage isolating switch structure allows the staff to switch the knife switch 5 manually without manual operation, thereby improving the safety factor of the high-voltage isolating switch.

[0024] Furthermore, a conductive plate 6 is provided at the top of the second insulating column 3, and a conductive seat 7 compatible with the switch 5 is fixedly provided at one end of the conductive plate 6 away from the second insulating column 3. The conductive seat 7 is a U-shaped structure, and a first conductive sheet 8 is fixedly provided on the inner wall of the conductive seat 7. There are two first conductive sheets 8, and both of the two first conductive sheets 8 are copper sheets, and the copper sheets are provided with protrusions. The two first conductive sheets 8 are used to contact the switch 5. A second conductive sheet 9 is fixedly provided on the bottom inner side of the conductive seat 7. The second conductive sheet 9 is used to contact the switch 5, and the second conductive sheet 9 is a copper sheet.

[0025] Specifically, by rotating the knife 5 so that it rotates to the inner side of the conductive seat 7, the knife 5 first contacts with the two first conductive sheets 8 and squeezes the two first conductive sheets 8, causing the two first conductive sheets 8 to produce elastic deformation, thereby making the two first conductive sheets 8 in close contact with the knife 5, and then the knife 5 contacts with the second conductive sheet 9. By providing the two first conductive sheets 8 and the second conductive sheet 9, the contact area with the knife 5 is increased, the resistance of the contact part is effectively reduced, the heat generation is reduced, and the stability of the high-voltage disconnector is improved.

[0026] Furthermore, a conductive column 12 is fixedly arranged at the bottom of the conductive plate 6, and a conductive slot 13 is provided at the top of the second insulating column 3 to slide with the conductive column 12. A spring 14 is sleeved outside the conductive column 12, and the spring 14 is fixedly connected to the conductive plate 6 and the upper end of the conductive slot 13 respectively.

[0027] Specifically, when the knife switch 5 contacts the conductive seat 7, the conductive seat 7 drives the conductive plate 6 to squeeze the spring 14 and cooperates with the conductive column 12 to slide in the conductive slot 13, so as to buffer the contact force when the knife switch 5 is closed and reduce component damage.

[0028] Finally, two connecting rods 15 are provided at the bottom of the base 1 to respectively connect the first insulating column 2 and the second insulating column 3 .

[0029] The operating principle of the utility model is now described as follows: the insulating shaft 11 is driven to rotate by the motor 10, and the insulating shaft 11 drives the knife 5 to rotate, so that the knife 5 rotates to the inside of the conductive seat 7, and the knife 5 first contacts with the two first conductive sheets 8 and squeezes the two first conductive sheets 8, so that the two first conductive sheets 8 produce elastic deformation, and then the two first conductive sheets 8 are closely contacted with the knife 5, and the knife 5 is then in contact with the second conductive sheet 9. By providing the two first conductive sheets 8 and the second conductive sheet 9, the contact area with the knife 5 is increased, the resistance of the contact part is effectively reduced, the heat generation is reduced, and the stability of the high-voltage disconnector is improved. In addition, the high-voltage disconnector structure allows the staff to switch the knife 5 without manual operation, thereby improving the safety factor of the high-voltage disconnector.

[0030] 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 low impedance high voltage isolating switch, comprising a base (1), characterized in that: A first insulating column (2) and a second insulating column (3) are fixedly arranged on the base (1); a knife holder (4) is fixedly arranged on the top of the first insulating column (2); a knife (5) is rotatably arranged inside the knife holder (4); a driving component for driving the knife (5) to rotate is arranged on the top of the first insulating column (2); a conductive plate (6) is arranged on the top of the second insulating column (3); a conductive seat (7) adapted to the knife (5) is fixedly arranged at one end of the conductive plate (6) away from the second insulating column (3); the conductive seat (7) is in a U-shaped structure; a first conductive sheet (8) is fixedly arranged on the inner side wall of the conductive seat (7); and a second conductive sheet (9) is fixedly arranged on the inner bottom of the conductive seat (7).

2. A low impedance high voltage isolating switch according to claim 1, characterized in that: The drive assembly comprises a motor (10) and an insulating shaft (11); the motor (10) is fixedly arranged at the top end of the first insulating column (2); the insulating shaft (11) is rotatably arranged at the side end of the knife seat (4) and is fixed to the rotating shaft of the knife (5); and the output end of the motor (10) is fixed to the insulating shaft (11).

3. A low impedance high voltage isolating switch according to claim 1, characterized in that: A conductive column (12) is fixedly arranged at the bottom of the conductive plate (6), and a conductive groove (13) is provided at the top of the second insulating column (3) for slidingly fitting with the conductive column (12).

4. A low impedance high voltage isolating switch according to claim 3, characterized in that: A spring (14) is sleeved on the outer side of the conductive column (12), and the spring (14) is fixedly connected to the conductive plate (6) and the upper end of the conductive slot (13) respectively.

5. A low impedance high voltage isolating switch according to claim 1, characterized in that: Two first conductive sheets (8) are provided, both of which are copper sheets, and the copper sheets are provided with protrusions, and both of which are used to contact the blade switch (5).

6. A low impedance high voltage isolating switch according to claim 1, characterized in that: The second conductive sheet (9) is used for contacting the blade (5), and the second conductive sheet (9) is a copper sheet.

7. A low impedance high voltage isolating switch according to claim 1, characterized in that: Two connecting rods (15) are provided at the bottom of the base (1) and are respectively connected to the first insulating column (2) and the second insulating column (3).

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