A 40.5kV three-phase split-phase selector switch device

Abstract

The present invention relates to a 40.5kV three-phase split-phase selection switch device, comprising a three-phase busbar, a split-phase operation three-position isolating and grounding switch and a three-in-one busbar; the characteristics are: the three positions on the split-phase operation three-position isolating and grounding switch are independently provided with operating mechanisms, so that the operating mechanisms can independently operate the three positions of the split-phase operation three-position isolating and grounding switch for split-phase selection; a split-phase operation isolating switch that meets the 40.5kV voltage level is used as the split-phase selection device, which solves the problem of replacing the small with the large in the switch option equipment for 40.5kV test, which is high in cost and has no three-phase split-phase selection sulfur hexafluoride insulated switch equipment that can be operated both manually and electrically; in addition, the staggered distribution of the operating mechanisms can effectively reduce the volume of the entire structure, and at the same time, the grounding contact is arranged close to the three-in-one busbar, which can effectively protect the product.

Description

Technical Field

[0001] The present invention relates to a field, and in particular to a 40.5kV three-phase split-phase selection switch device. Background Art

[0002] At present, the switch option equipment for 40.5kV test in the market all adopts three-phase common box type manual operation switch equipment or open type manual operation switch equipment; there is no three-phase split phase selection sulfur hexafluoride insulated switch equipment product suitable for 40.5kV that can be operated manually or electrically. In addition, in order to meet the needs of users in low temperature and ultra-low temperature areas, manufacturers often need to use large-sized ones instead of small ones, or reduce the performance of existing products. This product structure not only increases the customer's procurement cost but also reduces the product performance. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a 40.5kV three-phase split-phase selection switch device, which can solve the problems of replacing small with large in experimental switch option equipment, high cost and lack of three-phase split-phase selection sulfur hexafluoride insulated switch equipment that can be operated both manually and electrically at a voltage level of 40.5kV.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a 40.5kV three-phase split phase selection switch device, including a three-phase busbar, a split phase operation three-position isolation grounding switch and a three-in-one busbar; its innovative points are: The two ends of the phase-operated three-position isolating and grounding switch are respectively connected to a three-phase busbar and a three-in-one busbar, so that the three-phase busbar, the phase-operated three-position isolating and grounding switch and the three-in-one busbar are mutually conductive, and the conductive space is filled with isobaric sulfur hexafluoride gas; The three positions of the phase-splitting operation three-position isolating and grounding switch are independently provided with operating mechanisms, so that the operating mechanisms can perform separate phase selection on the three positions of the phase-splitting operation three-position isolating and grounding switch.

[0005] Furthermore, the one-phase three-phase bus is converted from a single-phase circuit on the high-voltage side into a three-phase common-box bus circuit, and is connected to a phase-splitting three-position isolating and earthing switch through a three-phase split-phase interface; the three-in-one bus is a three-phase split-phase circuit led out from a phase-splitting three-position isolating and earthing switch and converted into a three-phase industrial-phase bus circuit through a three-phase split-phase interface.

[0006] Furthermore, the operating mechanism is manually operated or electrically operated.

[0007] Furthermore, the three-position isolating and grounding switch for phase-splitting operation is distributed in a three-shaped shape, and the operating mechanisms on any two adjacent positions of the operating mechanisms on the three positions on the three-position isolating and grounding switch for phase-splitting operation are distributed on both sides of the three-position isolating and grounding switch for phase-splitting operation to achieve staggered distribution.

[0008] Furthermore, the operating mechanism includes an operating box, a connection crank arm and a grounding contact; the operating box is installed on the three stations of the phase-operated three-station isolating and grounding switch; a static contact into which a three-phase bus extends is provided in the operating box; the connection crank arm is a moving contact and is hinged at the end of the three-in-one bus extending into the operating box; the connection crank arm is fixedly connected to the driving source; the grounding contact is installed on the inner wall of the operating box and close to the side where the three-in-one bus is located.

[0009] The advantages of the present invention are: 1) The present invention adopts a phase-operated isolator that meets the 40.5kV voltage level as the phase selection device, which solves the problem of replacing small with large, high cost and lack of three-phase phase-selective sulfur hexafluoride insulated switchgear that can be operated both manually and electrically in the 40.5kV test switch option equipment; in addition, the staggered distribution of the operating mechanism can effectively reduce the volume of the entire structure. At the same time, the grounding contact is set close to the three-in-one mother, which can effectively protect the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0011] Figure 1 This is a schematic diagram of the main structure of a 40.5kV three-phase split-phase selection switch device of the present invention.

[0012] Figure 2 The figure is a schematic side view of the structure of a 40.5kV three-phase split-phase selection switch device according to the present invention.

[0013] Figure 3 This is a cross-sectional view of a 40.5kV three-phase split-phase selection switch device of the present invention. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] like Figures 1 to 3 A 40.5kV three-phase split-phase selection switch device is shown, comprising a split-phase three-phase busbar 1, a split-phase operation three-position isolating grounding switch 2 and a three-in-one busbar 3; The two ends of the phase-operated three-position isolating and grounding switch 2 are respectively connected to the one-way three-phase bus 1 and the three-in-one bus 3, so that the one-way three-phase bus 1, the phase-operated three-position isolating and grounding switch 2 and the three-in-one bus 3 are connected to each other, and the conductive space is filled with isobaric sulfur hexafluoride gas.

[0017] The three positions of the phase-splitting operation three-position isolating and grounding switch 2 are independently provided with operating mechanisms 4 , so that the operating mechanisms 4 can independently operate the three positions of the phase-splitting operation three-position isolating and grounding switch 2 for phase-splitting operation.

[0018] The one-phase three-phase bus 1 is converted from the single-phase circuit on the high-voltage side into a three-phase common-box bus circuit, and is connected to the phase-splitting three-position isolating and earthing switch through a three-phase split-phase interface; the three-in-one bus 3 is a three-phase split-phase circuit led out from the phase-splitting three-position isolating and earthing switch 2, which is converted into a three-phase industrial-phase bus circuit through a three-phase split-phase interface.

[0019] The operating mechanism 4 is manually operated or electrically operated.

[0020] The phase-operated three-position isolating and grounding switch 2 is distributed in a three-shaped shape, and the operating mechanisms 4 on any two adjacent positions of the operating mechanisms on the three positions of the phase-operated three-position isolating and grounding switch 2 are distributed on both sides of the phase-operated three-position isolating and grounding switch 2 to achieve staggered distribution.

[0021] The operating mechanism 4 includes an operating box 41, a connection crank arm 42 and a grounding contact 43; the operating box 41 is installed on the three positions of the phase-splitting operating three-position isolating and grounding switch 2; a static contact extending into a three-phase busbar is provided in the operating box 41; the connection crank arm 42 is a moving contact and is hinged at the end of the three-in-one busbar 3 extending into the operating box 41; the connection crank arm 42 is fixedly connected to the driving source; the grounding contact 43 is installed on the inner wall of the operating box 41 and close to the side where the three-in-one busbar 3 is located.

[0022] The working principle of the present invention is: using a phase-splitting operating isolator that meets the 40.5kV voltage level as a phase-splitting selection device, which solves the problems of replacing small with large, high cost and lack of three-phase phase-splitting sulfur hexafluoride insulated switchgear that can be operated both manually and electrically in the 40.5kV test switch option equipment; in addition, the staggered distribution of the operating mechanism can effectively reduce the volume of the entire structure. At the same time, the grounding contact is set close to the three-in-one mother, which can effectively protect the product.

[0023] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, and these changes and improvements shall all fall within the scope of the present invention claimed for protection.

Claims

1. A 40.5kV three-phase split-phase selective switch device, comprising a split-phase three-phase busbar, a split-phase operation three-position isolating grounding switch and a three-in-one busbar; characterized in that: The two ends of the phase-operated three-position isolating and grounding switch are respectively connected to a three-phase busbar and a three-in-one busbar, so that the three-phase busbar, the phase-operated three-position isolating and grounding switch and the three-in-one busbar are mutually conductive, and the conductive space is filled with isobaric sulfur hexafluoride gas; The three positions of the phase-splitting operation three-position isolating and grounding switch are independently provided with operating mechanisms, so that the operating mechanisms can perform separate phase selection on the three positions of the phase-splitting operation three-position isolating and grounding switch.

2. A 40.5kV three-phase split phase selection switch device according to claim 1, characterized in that: The one-phase three-phase bus is converted from a single-phase circuit on the high-voltage side into a three-phase common-box bus circuit, and is connected to a phase-splitting three-position isolating and earthing switch through a three-phase split-phase interface; the three-in-one bus is a three-phase split-phase circuit led out from a phase-splitting three-position isolating and earthing switch, which is converted into a three-phase industrial-phase bus circuit through a three-phase split-phase interface.

3. A 40.5kV three-phase split phase selection switch device according to claim 1, characterized in that: The operating mechanism is manually operated or electrically operated.

4. A 40.5kV three-phase split phase selection switch device according to claim 1, characterized in that: The phase-operated three-position isolating and grounding switch is distributed in a three-shaped shape, and the operating mechanisms on any two adjacent positions of the operating mechanisms on the three positions of the phase-operated three-position isolating and grounding switch are distributed on both sides of the phase-operated three-position isolating and grounding switch to achieve staggered distribution.

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