Isolating switch with interlocking function

Abstract

The utility model discloses an isolating switch with an interlocking function, which comprises a base, a porcelain insulator is arranged on the base, a moving contact and a static contact are respectively arranged at the top of the porcelain insulator, a movable rod is hinged on the static contact, a contact piece is arranged below the movable rod, and the movable rod is hinged on the contact piece. Limiting pieces are arranged on the inner walls of the moving contact and the static contact, a lug seat is arranged on the porcelain insulator, a screw rod is connected to the lug seat, and a limiting plate is arranged at the top of the screw rod. According to the utility model, the structural design is scientific and reasonable, the connection stability of the movable rod, the moving contact and the static contact is ensured by arranging the connection hole, the movable rod, the contact piece, the limiting piece and other structures, and the movable rod can be conveniently rotated and adjusted, so that the purpose of conveniently adjusting equipment is achieved; and through cooperative use of structures such as lug seats, screw rods and limiting plates, the movable rod can be further limited and fixed, so that the mounting and positioning strength of the movable rod is fully guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating switch equipment, in particular to an isolating switch with an interlocking function. Background Art

[0002] The isolating switch is one of the important electrical equipment in the power system, and its operating status plays a very important role in the stable operation of the power system. Since the isolating switch is exposed to the atmospheric environment for a long time, the working environment is relatively harsh, and it is easy to be broken down by lightning overvoltage, causing power outages in the line, which seriously affects the reliability of power supply. When the isolating switch is in the open position, there is an insulation distance that meets the specified requirements and an obvious disconnection mark between the contacts; when it is in the closed position, it is a switch device that can carry the current under normal circuit conditions and the current under abnormal conditions within a specified time. It is generally used as a high-voltage isolating switch. Its working principle and structure are relatively simple, but due to its large usage and high working reliability requirements, it has a great impact on the design, establishment and safe operation of substations and power plants. After the isolating switch is opened, a reliable insulation gap is established to separate the facilities or lines that need to be repaired from the power supply with an obvious disconnection point, thereby ensuring the safety of maintenance personnel and equipment. Since the working environment of the isolating switch is mostly outdoors at high altitude, it needs to withstand wind, sun and rain. Therefore, after long-term use, corrosion will occur, making it difficult to separate in place, or looseness will occur, resulting in sensitive movement of the split contact, which is prone to shaking and mis-triggering. At the same time, after the disconnector is closed, the static contact and the moving contact need to be in reliable contact so that the current can be smoothly conducted to avoid poor contact. Otherwise, electric sparks are likely to occur, resulting in increased power loss and accidents. To this end, we propose a disconnector with an interlocking function. Utility Model Content

[0003] The purpose of the utility model is to provide a disconnector with an interlocking function to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a disconnector with an interlocking function, comprising a base, an insulating porcelain bottle is arranged on the base, a moving contact and a static contact are arranged on the top of the insulating porcelain bottle, a movable rod is hinged on the static contact, a contact piece is arranged under the movable rod, a limiting piece is arranged on the inner wall of the moving contact and the static contact, an ear seat is arranged on the insulating porcelain bottle, a screw is connected to the ear seat, and a limiting plate is arranged on the top of the screw.

[0005] In the above solution, a support block is arranged below the base, and a through hole is opened in the middle of the base.

[0006] In the above solution, the sides of the moving contact and the static contact are both provided with connection holes for use with bolts.

[0007] In the above solution, the thickness of the contact piece is smaller than the thickness of the movable rod itself.

[0008] In the above solution, the moving contact and the static contact are provided with drainage grooves extending outwards.

[0009] In the above solution, a buffer sheet is provided on the inner side of the limiting plate.

[0010] In the above solution, the insulating porcelain bottle has a built-in zinc oxide resistor.

[0011] Compared with the prior art, the beneficial effects of the utility model are: this type of isolating switch with interlocking function has a simple and reasonable structural design and strong practicality. By setting structures such as connecting holes, movable rods, contact plates and limit plates, the connection stability between the movable rod and the moving contact and the static contact is guaranteed. At the same time, the movable rod can be conveniently rotated and adjusted, thereby achieving the purpose of facilitating the adjustment of the equipment. By setting structures such as ear seats, screws, and limit plates for use, the movable rod can be further limited and fixed, thereby fully ensuring the installation and positioning strength of the movable rod, ensuring the connection stability between the moving contact and the static contact, improving the safety of the equipment, and effectively avoiding accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] Figure 2 This is a schematic diagram of the structure of the movable rod of the utility model.

[0014] Figure 3 This is a schematic diagram of the structure of the moving contact of the utility model.

[0015] In the figure: 1 base, 11 support block, 12 insulating porcelain bottle, 13 moving contact, 14 static contact, 15 connecting hole, 16 movable rod, 17 contact piece, 18 limiting piece, 19 drainage groove, 2 through hole, 21 ear seat, 22 screw rod, 23 limiting plate. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0017] See also Figure 1-3The utility model provides a technical solution: a disconnector with an interlocking function, comprising a base 1, an insulating porcelain bottle 12 is arranged on the base 1, a moving contact 13 and a static contact 14 are respectively arranged on the top of the insulating porcelain bottle 12, a movable rod 16 is hinged on the static contact 14, a contact piece 17 is arranged below the movable rod 16, and a limiting piece 18 is arranged on the inner wall of the movable contact 13 and the static contact 14. By arranging structures such as a connecting hole 15, a movable rod 16, a contact piece 17 and a limiting piece 18, the connection stability of the movable rod 16 with the movable contact 13 and the static contact 14 is guaranteed, and at the same time, the movable rod 16 can be conveniently rotated and adjusted, thereby achieving the purpose of facilitating the adjustment of the equipment.

[0018] In the power system, the isolating switch is a switch device that is mainly used for isolating power supply, switching operation, connecting and disconnecting small current circuits, and has no arc extinguishing function. In the distribution network, the isolating switch is generally used in transformer tapping points, pole switches, and the junction of cables and overhead lines. The insulating porcelain bottle 12 is provided with an ear seat 21, and the ear seat 21 is connected with a screw 22, and a limit plate 23 is provided on the top of the screw 22. By setting the ear seat 21, the screw 22, the limit plate 23 and other structures for use, the movable rod 16 can be further limited and fixed, so as to fully ensure the installation and positioning strength of the movable rod 16, ensure the connection stability between the moving contact 13 and the static contact 14, improve the safety of the equipment, and effectively avoid accidents. It solves the problem that the common isolating switch often becomes a weak structural point in the distribution network line due to the low insulation degree during use, and is easily broken down by lightning overvoltage, causing line power outages, seriously affecting the reliability of power supply.

[0019] In the above solution, a support block 11 is provided below the base 1, and a through hole 2 is provided in the middle of the base 1. A positioning hole is provided on the support block 11, and the design of the through hole 2 has the effect of ventilation and drainage, thereby improving the use effect of the switch device.

[0020] In the above solution, the sides of the moving contact 13 and the stationary contact 14 are provided with connection holes 15 for use with bolts. The connection mode of using bolts to cooperate with the connection holes 15 further improves the connection stability of the moving contact 13, the stationary contact 14 and the movable rod 16.

[0021] In the above solution, the thickness of the contact piece 17 is smaller than the thickness of the movable rod 16. When the contact piece 17 is connected to the limiting piece 18, the limiting piece 18 has good elasticity to clamp the contact piece 17, so that the two can be assembled and separated more conveniently.

[0022] In the above solution, the moving contact 13 and the stationary contact 14 are provided with a drainage groove 19 extending outward. The design of the drainage groove 19 can improve the drainage effect of the equipment and prevent water from accumulating on the switch mechanism.

[0023] In the above solution, a buffer sheet is provided on the inner side of the limit plate 23. The buffer sheet can abut and fix the inner movable rod 16.

[0024] In the above scheme, the insulating porcelain bottle 12 has a built-in zinc oxide resistor. By adopting the form of the insulating porcelain bottle 12 having a built-in zinc oxide valve, the lightning protection device can be integrated into the disconnector, so that the disconnector itself also has a lightning protection function, thereby further improving the lightning protection capability of the disconnector.

[0025] Working principle:

[0026] This type of disconnector with interlocking function ensures the connection stability between the movable rod 16 and the moving contact 13 and the static contact 14 by setting structures such as the connecting hole 15, the movable rod 16, the contact piece 17 and the limiting piece 18. The movable rod 16 can be locked and fixed with the moving contact 13 and the static contact 14 by corresponding bolts, and the movable rod 16 can be further limited and fixed by setting structures such as the ear seat 21, the screw rod 22 and the limiting plate 23, so as to fully ensure the installation and positioning strength of the movable rod 16, ensure the connection stability between the moving contact 13 and the static contact 14, realize the interlocking function, ensure the use effect of the disconnector, and effectively improve the safety of the equipment.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An isolating switch with interlocking function, comprising a base (1), characterized in that: An insulating porcelain bottle (12) is arranged on the base (1), a moving contact (13) and a stationary contact (14) are arranged on the top of the insulating porcelain bottle (12), a movable rod (16) is hinged on the stationary contact (14), a contact piece (17) is arranged below the movable rod (16), and a limiting piece (18) is arranged on the inner wall of the moving contact (13) and the stationary contact (14), an ear seat (21) is arranged on the insulating porcelain bottle (12), a screw rod (22) is connected to the ear seat (21), and a limiting plate (23) is arranged on the top of the screw rod (22).

2. The disconnector with interlocking function according to claim 1, characterized in that: A support block (11) is provided below the base (1), and a through hole (2) is provided in the middle of the base (1).

3. The disconnector with interlocking function according to claim 1, characterized in that: The sides of the moving contact (13) and the stationary contact (14) are both provided with connection holes (15) for use with bolts.

4. The disconnector with interlocking function according to claim 1, characterized in that: The thickness of the contact piece (17) is smaller than the thickness of the movable rod (16) itself.

5. The disconnector with interlocking function according to claim 1, characterized in that: The moving contact (13) and the stationary contact (14) are provided with drainage grooves (19) extending outwards.

6. The disconnector with interlocking function according to claim 1, characterized in that: A buffer sheet is arranged on the inner side of the limiting plate (23).

7. The disconnector with interlocking function according to claim 1, characterized in that: The insulating porcelain bottle (12) has a built-in zinc oxide resistor.

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