Grounding switch with guide device for ring main unit

Abstract

The utility model discloses a grounding switch with a guiding device for a ring main unit, which comprises a plurality of medium-voltage switch mechanism transmission devices, an insulator mounting plate and a grounding tool bit mounting plate, the medium-voltage switch mechanism transmission devices comprise operation structures and matching structures, and the operation structures and the matching structures are matched with each other. The newly added operation structure and cooperation structure can improve the position guiding accuracy when the grounding switch is switched on, increase the stability of the grounding switch, increase the switching-on holding force without increasing the contact wear, and improve the trafficability of a 25kA grounding switch-on type test.

Description

Technical Field

[0001] The utility model belongs to the field of grounding switches, in particular to a grounding switch with a guide device used for a ring network cabinet. Background Art

[0002] A grounding switch is a mechanical grounding device that releases the static charge of the equipment and circuit being repaired and ensures the personal safety of maintenance personnel during power outages. It can withstand current for a certain period of time under abnormal conditions (such as short circuits), but does not pass load current under normal conditions. It is usually a part of the disconnector. The structure of conventional grounding switches is not stable enough. After multiple opening and closing, the blade head will deviate from the closing position due to wear, and it cannot pass the 25kA grounding closing type test.

[0003] In summary, there are still many drawbacks in the existing technology:

[0004] 1. The moving cutter head and the stationary cutter head lack guide devices;

[0005] 2. After multiple opening and closing, the cutter head is worn, resulting in deviation in the closing position;

[0006] 3. The possibility of passing the 25kA grounding closing type test is low. Summary of the invention

[0007] In view of the shortcomings of the prior art, the utility model provides a grounding switch with a guide device for a ring main unit to solve the above problems. To achieve the above objectives, the utility model is implemented through the following technical solutions.

[0008] A grounding switch with a guide device for a ring network cabinet comprises a medium-voltage switch mechanism transmission device, an insulator mounting plate, and a grounding blade head mounting plate. The medium-voltage switch mechanism transmission device is provided with a plurality of medium-voltage switch mechanism transmission devices, and the medium-voltage switch mechanism transmission device comprises an operating structure and a matching structure, and the two are adapted to each other. The operating structure comprises an insulator, an outlet conductor, a transmission assembly, an insulating main shaft, a guide sleeve, and a movable blade head. The matching structure comprises a guide, a guide fixing support, and a grounding blade head. The guide sleeve is connected to the movable blade head, and an opening is provided on the guide sleeve. The guide fixing support is fixed to the grounding blade head mounting plate. The position of the guide corresponds to the position of the opening on the guide sleeve, and is connected to the guide fixing support. The newly added operating structure and matching structure can improve the accuracy of position guidance when the grounding switch is closed, increase the stability of the grounding switch, increase the closing holding force without increasing contact wear, and improve the passability of the 25kA grounding closing type test.

[0009] Preferably, there are three medium voltage switch mechanism transmission devices.

[0010] Preferably, the insulator is fixed on an insulator mounting plate.

[0011] Preferably, the transmission assembly is connected to the insulating main shaft and the movable cutter head respectively.

[0012] Preferably, the grounding blade head is fixed on a grounding blade head mounting plate.

[0013] Preferably, the medium voltage switch mechanism transmission devices are connected via an insulating main shaft.

[0014] Preferably, the outgoing conductor is fixed on the top of the insulator.

[0015] Preferably, the guide member fixing support is fixed on the grounding blade head mounting plate.

[0016] Preferably, the outgoing conductor is movably connected to the movable cutter head.

[0017] Preferably, the guide sleeve is connected to the movable cutter head.

[0018] Compared with the prior art, the utility model discloses a grounding switch with a guide device for a ring network cabinet, including a medium-voltage switch mechanism transmission device, an insulator mounting plate, and a grounding blade mounting plate. The medium-voltage switch mechanism transmission device is provided with several, and the medium-voltage switch mechanism transmission device includes an operating structure and a matching structure, and the two are adapted to each other. The newly added operating structure and matching structure can improve the position guiding accuracy when the grounding switch is closed, increase the stability of the grounding switch, increase the closing holding force without increasing contact wear, and improve the passability of the 25kA grounding closing type test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a grounding switch with a guide device for a ring main unit according to the utility model;

[0020] Figure 2 This is a structural schematic diagram of the guide member and the guide sleeve of the utility model;

[0021] Figure 3 It is a schematic side section diagram of the structure of the guide member and the guide sleeve of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the utility model in which the guide member is just closed with the guide sleeve;

[0023] Figure 5 It is a schematic side section diagram of the structure of the guide member of the utility model just closing with the guide sleeve;

[0024] Figure 6 The utility model is a schematic structural diagram of a grounding switch with a guide device for a ring network cabinet. DETAILED DESCRIPTION

[0025] 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.

[0026] A grounding switch with a guide device for a ring network cabinet, comprising a medium-voltage switch mechanism transmission device, an insulator mounting plate 1, and a grounding blade head mounting plate 11. The medium-voltage switch mechanism transmission device is provided with a plurality of medium-voltage switch mechanism transmission devices, and the medium-voltage switch mechanism transmission device comprises an operating structure and a matching structure, and the two are adapted to each other. The operating structure comprises an insulator 2, an outlet conductor 3, a transmission assembly 4, an insulating main shaft 5, a guide sleeve 6, and a movable blade head 7. The matching structure comprises a guide member 8, a guide member fixing support 9, and a grounding blade head 10. The guide sleeve 6 is connected to the movable blade head 7, and an opening is provided on the guide sleeve 6. The guide member fixing support 9 is fixed to the grounding blade head mounting plate 11. The position of the guide member 8 corresponds to the position of the opening on the guide sleeve 6, and is connected to the guide member fixing support 9. The medium voltage switch mechanism transmission devices are provided with three, the insulator 2 is fixed on the insulator mounting plate 1, the transmission assembly 4 is respectively connected to the insulating main shaft 5 and the movable cutter head 7, the grounding cutter head 10 is fixed on the grounding cutter head mounting plate 11, the medium voltage switch mechanism transmission devices are connected through the insulating main shaft 5, the outgoing conductor 3 is fixed on the top of the insulator 2, the guide fixing support 9 is fixed on the grounding cutter head mounting plate 11, the outgoing conductor 3 is movably connected to the movable cutter head 7, and the guide sleeve 6 is sleeved and connected to the movable cutter head 7.

[0027] Working mode: During the closing process of the grounding switch, the operating structure and the matching structure start to work when the switch just breaks through the arc, and the guide member 8 just acts on the guide sleeve 6 (see Figure 2 ), then close the switch to the final state (see Figure 3 ), Figure 4 The medium voltage switch mechanism transmission device is equipped with three parts that can play a better guiding and fixing role. The guide sleeve 6 is installed on the moving cutter head 7. When closing the switch, it acts with the guide member 8 to increase the closing holding force and provide a more stable structure when closing the switch. The moving cutter head 7 can rotate and can be in the closed or open state.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0030] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A grounding switch with a guide device for a ring main unit, characterized in that: The invention comprises a medium voltage switch mechanism transmission device, an insulator mounting plate (1), and a grounding blade head mounting plate (11). The medium voltage switch mechanism transmission device is provided with a plurality of the medium voltage switch mechanism transmission devices. The medium voltage switch mechanism transmission device comprises an operating structure and a matching structure, and the two are adapted to each other. The operating structure comprises an insulator (2), an outlet conductor (3), a transmission assembly (4), an insulating main shaft (5), a guide sleeve (6), and a movable blade head (7). The matching structure comprises a guide member (8), a guide member fixing support member (9), and a grounding blade head (10). The guide sleeve (6) is connected to the movable blade head (7). An opening is provided on the guide sleeve (6). The guide member fixing support member (9) is fixed to the grounding blade head mounting plate (11). The position of the guide member (8) corresponds to the position of the opening on the guide sleeve (6), and the guide member is connected to the guide member fixing support member (9).

2. The grounding switch with a guide device for a ring main unit according to claim 1, characterized in that: The medium voltage switch mechanism transmission devices are provided with three.

3. The grounding switch with a guide device for a ring main unit according to claim 1, characterized in that: The insulator (2) is fixed on the insulator mounting plate (1).

4. The grounding switch with a guide device for a ring main unit according to claim 1, characterized in that: The transmission assembly (4) is respectively connected to the insulating main shaft (5) and the movable cutter head (7).

5. The grounding switch with a guide device for a ring main unit according to claim 1, characterized in that: The grounding blade head (10) is fixed on a grounding blade head mounting plate (11).

6. The grounding switch with a guide device for a ring main unit according to claim 1, characterized in that: The medium voltage switch mechanism transmission devices are connected via an insulating main shaft (5).

7. The grounding switch with a guide device for a ring main unit according to claim 1, characterized in that: The outgoing conductor (3) is fixed on the top of the insulator (2).

8. The grounding switch with a guide device for a ring main unit according to claim 1, characterized in that: The guide member fixing support (9) is fixed on the grounding blade mounting plate (11).

9. The grounding switch with a guide device for a ring main unit according to claim 1, characterized in that: The outgoing conductor (3) is movably connected to the movable cutter head (7).

10. The grounding switch with a guide device for a ring main unit according to claim 1, characterized in that: The guide sleeve (6) is sleeved and connected to the movable cutter head (7).

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