Totally-enclosed insulated isolation switch

Abstract

The utility model provides a totally-enclosed insulation disconnecting switch, which relates to the technical field of high-voltage power transmission and comprises a bottom frame, a knob is arranged above the bottom frame, the bottom end of the knob penetrates through the bottom frame and then is provided with a rotating shaft, and a gear is arranged in the bottom frame; according to the utility model, the rotary knob is rotated to drive the gear to rotate, and under the guiding action of the limiting block and the limiting groove, the transmission characteristics of the gear and the rack are utilized to realize the relative or opposite movement of the two groups of totally-enclosed insulating disconnecting switches, so that the two groups of totally-enclosed insulating disconnecting switches can be separated from each other to widen the cable arrangement space or approach each other to adapt to a compact installation environment; the device can quickly adjust the spacing of the disconnecting switches according to the differences of wire specifications and current loads, ensures that different types of wires can be reasonably arranged, and can resist fault magnetic interference and prevent the switches from being accidentally switched off through the fixing effect of the second spring on the knife switch and the clamping seat. And the reliability and the stability of the operation of the power system are obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage power transmission technology, specifically a fully enclosed insulated disconnect switch. Background Technology

[0002] As a key piece of equipment in the power transmission and distribution equipment manufacturing field, the enclosed insulated disconnect switch achieves excellent protection and insulation performance through its fully enclosed structure and sealed insulating medium, effectively coping with various harsh environments. With the advancement of smart grid construction and the development of the new energy industry, its intelligent, environmentally friendly, and integrated trends are becoming increasingly prominent. At the application level, this equipment is widely used in substation operation and maintenance, grid connection of new energy power plants, and industrial and municipal engineering scenarios. It also plays an irreplaceable role in special environments such as high altitudes and coastal areas. In the market structure, leading domestic enterprises occupy a large share, while international manufacturers dominate the high-end market. Policy support, technological innovation, and equipment upgrade demands continue to drive the industry's development.

[0003] However, existing fully enclosed insulated disconnect switches are generally installed in a fixed manner, which makes it inconvenient to adjust the spacing between disconnect switches. This makes it difficult to ensure a reasonable safe distance between wires of different specifications and current loads, increasing the safety hazards of wires and potentially causing faults such as short circuits and overheating, thus reducing the reliability and stability of the power system. Utility Model Content

[0004] The purpose of this utility model is to provide a fully enclosed insulated disconnect switch that facilitates adjustment of the spacing between disconnect switches, can adapt to wires of different specifications and current loads, and maintains a suitable distance between them, thereby effectively improving the reliability and stability of power system operation.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a fully enclosed insulated disconnect switch, including a base frame, a knob is provided on the top of the base frame, a rotating shaft is installed after the bottom end of the knob passes through the base frame, a gear is provided inside the base frame, the bottom end of the rotating shaft passes through the gear and is rotatably connected inside the base frame, two racks mesh with the outer surface of the gear, a limit block is installed on the upper surface of each of the two racks, two limit grooves are opened on the upper surface of the base frame, the outer surface of each limit block is slidably connected to the inside of the limit groove, and a mounting plate is installed on the upper surface of each limit block.

[0006] As a further improvement of this utility model: a housing is installed on the upper surface of each mounting plate, two insulators and an insulating pad are installed inside each housing, and a fixing plate is installed on the top of each insulator.

[0007] As a further improvement of this utility model: two handles are provided on the top of each of the outer shells, a pull rod is installed on the bottom surface of each handle, a pressure plate is installed at the bottom end of each pull rod after penetrating the outer shell, and a first spring is sleeved on the outer surface of each pull rod.

[0008] As a further embodiment of this utility model: a mounting base is installed on the upper surface of one of the fixing plates, and a guillotine is movably connected inside each mounting base; a retaining seat is installed on the upper surface of the other fixing plate, and the other end of the guillotine is engaged inside the retaining seat.

[0009] As a further improvement of this utility model: a connecting rod is installed on the upper surface of each of the blades, an arc-shaped groove is opened on the outer surface of each of the housings, and a stop block is installed at the end of each connecting rod away from the blade after passing through the arc-shaped groove.

[0010] As a further improvement of this utility model: a second spring is installed on the upper surface of each insulating pad, the top of each second spring is installed on the bottom surface of the switch, and two wire holes are opened on the outer surface of each housing.

[0011] As a further improvement of this utility model: a fixing plate is fixedly installed on the outer surface of each of the outer shells, and a lever is movably connected to the upper surface of each fixing plate.

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

[0013] This invention drives the gears to rotate by turning a knob. Guided by the limiting block and the limiting groove, and utilizing the transmission characteristics of gears and racks, it enables the relative or opposite movement of two sets of fully enclosed insulated disconnect switches. Whether to widen the space for cable arrangement by moving them apart or to bring them closer together to adapt to a compact installation environment, it can be operated flexibly. The device can quickly adjust the spacing between the disconnect switches according to the differences in wire specifications and current load, ensuring that different types of wires can be arranged reasonably while maintaining a safe heat dissipation distance, effectively reducing the risk of electromagnetic interference. At the same time, the second spring's fixing effect on the knife switch and the card holder can resist fault magnetic interference and prevent the switch from accidentally disconnecting, significantly improving the reliability and stability of the power system operation. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0015] Figure 1The schematic diagram shows the internal structure of a fully enclosed insulated disconnector according to one embodiment of the present invention;

[0016] Figure 2 The schematic diagram shows a three-dimensional structural diagram of a fully enclosed insulated disconnect switch according to one embodiment of the present invention;

[0017] Figure 3 This schematically illustrates a fully enclosed insulated disconnector according to one embodiment of the present invention. Figure 1 Enlarged schematic diagram of the structure at point A;

[0018] Figure 4 This schematically illustrates a fully enclosed insulated disconnector according to one embodiment of the present invention. Figure 1 Enlarged schematic diagram of the structure at point B;

[0019] The following are the labels in the diagram: 1. Base frame; 2. Knob; 3. Shaft; 4. Gear; 5. Rack; 6. Limit block; 7. Limit groove; 8. Mounting plate; 9. Housing; 10. Insulator; 11. Fixing plate; 12. Handle; 13. Pull rod; 14. Pressure plate; 15. First spring; 16. Mounting base; 17. Knife switch; 18. Card holder; 19. Connecting rod; 20. Arc groove; 21. Stop block; 22. Insulating pad; 23. Second spring; 24. Wire hole; 25. Fixing plate; 26. Pulley. Detailed Implementation

[0020] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0021] An embodiment of the present invention is shown in conjunction with the accompanying drawings.

[0022] A fully enclosed insulated disconnect switch includes a base frame 1. A knob 2 is mounted on the top of the base frame 1. The bottom end of the knob 2 passes through the base frame 1 and is mounted on a rotating shaft 3. A gear 4 is installed inside the base frame 1. The bottom end of the rotating shaft 3 passes through the gear 4 and is rotatably connected inside the base frame 1. Two racks 5 mesh with the outer surface of the gear 4. Limit blocks 6 are mounted on the upper surface of each rack 5. Two limit grooves 7 are formed on the upper surface of the base frame 1. The outer surface of each limit block 6 is slidably connected to the inside of the limit groove 7. A mounting plate 8 is mounted on the upper surface of each limit block 6. The rotation of the knob 2 is converted into relative or opposite movement of the two mounting plates 8 through the transmission chain of "gear 4-rack 5-limit block 6", realizing flexible adjustment of the spacing of the fully enclosed insulated disconnect switch mounted on the mounting plate 8.

[0023] In this embodiment, a housing 9 is installed on the upper surface of each mounting plate 8, and two insulators 10 and an insulating pad 22 are installed inside each housing 9. A fixing piece 11 is installed on the top of each insulator 10. The housing 9 is made of transparent insulating material.

[0024] In this embodiment, each outer shell 9 is provided with two handles 12 on its top, and each handle 12 is provided with a pull rod 13 on its bottom surface. Each pull rod 13 is provided with a pressure plate 14 after penetrating the outer shell 9 at its bottom end. Each pull rod 13 is provided with a first spring 15 on its outer surface, so that the pressure plate 14 can form a stable pressing state on the wire placed inside the outer shell 9 under the elastic force of the first spring 15.

[0025] In this embodiment, a mounting base 16 is installed on the upper surface of one of the fixing plates 11, and a knife gate 17 is movably connected inside each mounting base 16. A retaining seat 18 is installed on the upper surface of the other fixing plate 11, and the other end of the knife gate 17 is engaged inside the retaining seat 18.

[0026] In this embodiment, a connecting rod 19 is installed on the upper surface of each switch 17, and an arc groove 20 is opened on the outer surface of each housing 9. The end of each connecting rod 19 away from the switch 17 passes through the arc groove 20 and is equipped with a stop block 21. When the connecting rod 19 is pushed, it can slide along the arc groove 20, thereby driving the switch 17 to complete the opening and closing action.

[0027] In this embodiment, a second spring 23 is installed on the upper surface of each insulating pad 22, the top of each second spring 23 is installed on the bottom surface of the switch 17, and two wire holes 24 are opened on the outer surface of each housing 9.

[0028] In this embodiment, a fixing plate 25 is fixedly installed on the outer surface of each housing 9, and a lever 26 is movably connected to the upper surface of each fixing plate 25. The lever 26 can be manually moved to engage between the connecting rod 19 and the stop block 21 to form a mechanical lock.

[0029] Working principle: In actual use, the base frame 1 is first fixed firmly in the target installation position with bolts. Then, the knob 2 is turned to drive the gear 4 to rotate. With the precise transmission of the gear 4 and the rack 5, the two sets of fully enclosed insulated disconnect switches can move relative to each other or in opposite directions, flexibly adjusting the distance between them to adapt to different specifications of wires and diverse installation needs. After the distance is adjusted to the correct position, the wire is passed through the wire hole 24, and the handle 12 is pulled to drive the pressure plate 14. Under the elastic action of the first spring 15, the wire is firmly fixed, ensuring a stable and reliable wire connection. When closing the switch 17, simply move the connecting rod 19. The elastic force generated by the internal second spring 23 will tightly fix the switch 17 to the card seat 18, effectively resisting abnormal magnetic interference caused by faults, avoiding power outage accidents caused by accidental switch disconnection, and improving the stability of the power system operation. When the equipment needs to be disconnected for maintenance, the switch 17 is also disconnected by moving the connecting rod 19, and the connecting rod 19 is locked by using the lever 26 to prevent the switch 17 from being closed accidentally, creating a safe working environment for maintenance personnel.

[0030] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A fully enclosed insulated disconnect switch, characterized in that, The device includes a base frame (1), a knob (2) is provided on the top of the base frame (1), a rotating shaft (3) is installed after the bottom end of the knob (2) passes through the base frame (1), a gear (4) is provided inside the base frame (1), the bottom end of the rotating shaft (3) passes through the gear (4) and is rotatably connected to the inside of the base frame (1), two racks (5) mesh with the outer surface of the gear (4), a limit block (6) is installed on the upper surface of the two racks (5), two limit grooves (7) are opened on the upper surface of the base frame (1), the outer surface of each limit block (6) is slidably connected to the inside of the limit groove (7), and an installation plate (8) is installed on the upper surface of each limit block (6).

2. The fully enclosed insulated disconnect switch according to claim 1, characterized in that, Each mounting plate (8) has a housing (9) mounted on its upper surface. Each housing (9) has two insulators (10) and an insulating pad (22) mounted inside. Each insulator (10) has a fixing plate (11) mounted on its top.

3. A fully enclosed insulated disconnect switch according to claim 2, characterized in that, Two handles (12) are provided on the top of each of the outer shells (9). A pull rod (13) is installed on the bottom surface of each handle (12). A pressure plate (14) is installed at the bottom end of each pull rod (13) after penetrating the outer shell (9). A first spring (15) is sleeved on the outer surface of each pull rod (13).

4. A fully enclosed insulated disconnect switch according to claim 2, characterized in that, One of the fixing plates (11) has a mounting base (16) installed on its upper surface, and a guillotine (17) is movably connected inside each mounting base (16). The other fixing plate (11) has a retainer (18) installed on its upper surface, and the other end of the guillotine (17) is engaged inside the retainer (18).

5. A fully enclosed insulated disconnect switch according to claim 4, characterized in that, A connecting rod (19) is installed on the upper surface of each of the guillotine (17), and an arc groove (20) is opened on the outer surface of each of the outer shells (9). A stop block (21) is installed at the end of each connecting rod (19) that is away from the guillotine (17) after passing through the arc groove (20).

6. A fully enclosed insulated disconnect switch according to claim 2, characterized in that, Each of the insulating pads (22) has a second spring (23) installed on its upper surface, and the top of each second spring (23) is installed on the bottom surface of the guillotine (17). Each of the outer surfaces of the housing (9) has two through holes (24).

7. A fully enclosed insulated disconnect switch according to claim 2, characterized in that, Each of the outer surfaces of the outer shell (9) is fixedly mounted with a fixing plate (25), and each fixing plate (25) is movably connected with a lever (26) on its upper surface.

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