Isolation switch and multi-phase isolation switch assembly

Abstract

The invention provides an isolating switch, which comprises a base, a first rotary table, a second rotary table, a first insulator, a second insulator, a first tool arm, a second tool arm and a transmission mechanism, and is characterized in that the transmission mechanism comprises a first transmission crank fixed to a rotary table rotor of the first rotary table and a second transmission crank fixed to a rotary table rotor of the second rotary table; the two ends of the transmission connecting rod are connected to the first transmission crank and the second transmission crank respectively, and the rotary table rotor of the first rotary table can drive the rotary table rotor of the second rotary table to rotate through the transmission mechanism when rotating, so that the disconnecting switch can be switched between a closing position and an opening position; in the opening position, the first knife arm and the second knife arm are connected with each other, and in the opening position, the first knife arm and the second knife arm are disconnected. In addition, the invention also provides a multi-phase isolating switch assembly. Therefore, the manufacturing and mounting cost of parts can be effectively reduced, meanwhile, the production cycle of finished products is shortened, and market requirements are met more quickly.

Description

Technical Field

[0001] This invention relates generally to the field of power transmission, and more specifically to a disconnecting switch and a multiphase disconnecting switch assembly, particularly for use in high-voltage substations. Background Technology

[0002] In some high-voltage substations, due to space constraints, users require a more compact and simplified horizontal rotary disconnector in terms of transmission and mounting brackets, specifically a disconnector with insulators arranged in a V-shape. However, in conventional disconnectors, the opening and closing transmission mechanism typically employs complex bevel gear drives, resulting in higher equipment production costs and longer production cycles. Summary of the Invention

[0003] To overcome the aforementioned deficiencies in the prior art, the present invention proposes a disconnecting switch, comprising: a base; a first turntable and a second turntable, each of the first turntable and the second turntable including a turntable body and a turntable rotor rotatable relative to the turntable body, and the turntable bodies of the first turntable and the second turntable being fixed to the base; a first insulator and a second insulator, one end of the first insulator being fixed to the turntable rotor of the first turntable, and one end of the second insulator being fixed to the turntable rotor of the second turntable; a first cutter arm and a second cutter arm, the first cutter arm being fixed to the other end of the first insulator, and the second cutter arm being fixed to the second insulator. The other end; and a transmission mechanism, the transmission mechanism comprising: a first transmission crank and a second transmission crank, the first transmission crank being fixed to the turntable rotor of the first turntable, and the second transmission crank being fixed to the turntable rotor of the second turntable; and a transmission connecting rod, the two ends of the transmission connecting rod being respectively connected to the first transmission crank and the second transmission crank, wherein, when the turntable rotor of the first turntable rotates, it can drive the turntable rotor of the second turntable to rotate through the transmission mechanism, so that the disconnecting switch can switch between a closed position and an open position. In the closed position, the first cutter arm and the second cutter arm are connected to each other, while in the open position, the first cutter arm and the second cutter arm are disconnected. Accordingly, by using the transmission mechanism of the present invention to replace the conventional bevel gear transmission mechanism, the manufacturing and installation costs of components can be effectively reduced, while the production cycle of the finished product can be shortened, and market demands can be met more quickly. Moreover, the bevel gear transmission mechanism usually requires a clearance to achieve normal operation, which will result in poor synchronization of multi-phase disconnecting switches. The disconnecting switch proposed in the present invention can provide better synchronization in multi-phase applications.

[0004] Furthermore, the base has a first outer surface and a second outer surface, which are inclined at an angle relative to each other. The main body of the first turntable is fixed to the first outer surface, and the main body of the second turntable is fixed to the second outer surface, such that the first insulator and the second insulator are arranged in a V-shape. Accordingly, the V-shaped arrangement of the two insulators on the base allows for a more compact structure of the disconnecting switch, facilitates its installation and commissioning, and reduces costs.

[0005] Furthermore, the angle is greater than 90 degrees and less than 180 degrees. This allows for a more compact structure to be made of the disconnecting switch.

[0006] Furthermore, the first outer surface and the second outer surface intersect each other. This allows for a more compact structure of the disconnecting switch.

[0007] Furthermore, the transmission mechanism also includes a third transmission crank, which is fixed to the turntable rotor of the first turntable and used to connect to the drive linkage of the drive mechanism. This reduces structural complexity and cost.

[0008] Furthermore, the transmission mechanism also includes a fourth transmission crank, which is fixed to the turntable rotor of the first turntable and used to connect to an inter-phase transmission link for synchronizing the opening and closing operations of multiple disconnecting switches. Accordingly, compared to conventional bevel gear transmission mechanisms, the present invention can achieve synchronized opening and closing of multi-phase disconnecting switches in a more accurate manner.

[0009] Furthermore, this invention also proposes a multiphase disconnector assembly, comprising: a plurality of disconnectors as mentioned above; a drive mechanism for driving the rotation of a first turntable of one of the disconnectors; and an interphase transmission link connected to a fourth transmission crank of each of the disconnectors. Accordingly, compared to conventional bevel gear transmission mechanisms, this invention can achieve synchronous opening and closing of multiphase disconnectors in a more accurate manner.

[0010] Furthermore, the multiphase disconnector assembly includes three disconnectors arranged at intervals along a straight line. Accordingly, the technical solution of the present invention can be adapted to three-phase disconnectors commonly used in the art. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the invention and constitute a part of this invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic side view of the disconnecting switch of the present invention; Figure 2 It is shown schematically. Figure 1 The diagram shows a top view of the disconnecting switch, with the disconnecting switch in the open position. Figure 3 It is shown schematically. Figure 1 The diagram shows a top view of the disconnecting switch in the closed position; and Figure 4 This is a schematic top view of the multiphase disconnector assembly of the present invention.

[0012] List of reference numerals

[0013] 1000 multiphase disconnector assembly

[0014] 100 disconnecting switch

[0015] 1. Base

[0016] 11 First outer surface

[0017] 12 Second outer surface

[0018] 2A First Turntable

[0019] 2B Second Turntable

[0020] 21 Turntable Main Body

[0021] 22 Turntable Rotor

[0022] 3A First Insulator

[0023] 3B Second Insulator

[0024] 4A First Cutting Arm

[0025] 4B Second Cutting Arm

[0026] 5. Transmission Mechanism

[0027] 50. Transmission connecting rod

[0028] 51 First transmission crank

[0029] 52 Second transmission crank

[0030] 53 Third transmission crank

[0031] 54 Fourth transmission crank

[0032] 200 drive mechanism

[0033] 201 Drive Link

[0034] 300 phase-to-phase transmission link Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other.

[0036] In the following detailed description, reference is made to the accompanying drawings, which form a part of this specification, in which specific embodiments of the invention can be practiced are illustrated by way of example. Regarding the drawings, directional terms such as “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” and “rear” are used with reference to the orientation of the drawings described. Since components of the embodiments of the invention can be positioned in many different orientations, the directional terms are for illustrative purposes only and are not intended to be limiting. It should be understood that other embodiments can be used, and structural or logical changes can be made without departing from the scope of the invention. Therefore, the following detailed description should not be construed as limiting, and the invention is defined by the appended claims.

[0037] refer to Figure 1 and Figure 2 As shown, the present invention proposes a disconnecting switch 100. The disconnecting switch 100 generally includes a base 1, a first turntable 2A and a second turntable 2B, a first insulator 3A and a second insulator 3B, a first blade arm 4A and a second blade arm 4B, and a transmission mechanism 5.

[0038] Each of the first turntable 2A and the second turntable 2B includes a turntable body 21 and a turntable rotor 22 rotatable relative to the turntable body 21, wherein the turntable body 21 of the first turntable 2A and the turntable body 21 of the second turntable 2B are fixed to the base 1. Of course, as Figure 1 As shown, the turntable body 21 of the first turntable 2A and the turntable body 21 of the second turntable 2B are fixed to a single base. Of course, the present invention is not limited to this; for example, they can also be fixed to separate bases.

[0039] One end of the first insulator 3A is fixed to the turntable rotor 22 of the first turntable 2A, and one end of the second insulator 3B is fixed to the turntable rotor 22 of the second turntable 2B. Accordingly, each insulator can rotate together with the turntable rotor to which it is connected.

[0040] The first cutter arm 4A is fixed to the other end of the first insulator 3A, and the second cutter arm 4B is fixed to the other end of the second insulator 3B. Accordingly, each cutter arm can also rotate together with the turntable rotor along with the insulator to which it is connected. Specifically, each cutter arm can have a bent shape; in other words, the section of the first cutter arm with contacts or fingers and the section of the second cutter arm with contacts or fingers are parallel to each other.

[0041] like Figure 2 and Figure 3 As shown, the transmission mechanism 5 generally includes a first transmission crank 51, a second transmission crank 52, and a transmission connecting rod 50. The first transmission crank 51 is fixed to the turntable rotor 22 of the first turntable 2A, and the second transmission crank 52 is fixed to the turntable rotor 22 of the second turntable 2B. The two ends of the transmission connecting rod 50 are respectively connected to the first transmission crank 51 and the second transmission crank 52. When the turntable rotor 22 of the first turntable 2A rotates, it can drive the turntable rotor 22 of the second turntable 2B to rotate through the transmission mechanism 5, so that the disconnecting switch 100 can switch between the closed position and the open position. In the closed position, the first blade arm 4A and the second blade arm 4B are connected to each other, while in the open position, the first blade arm 4A and the second blade arm 4B are disconnected. In particular, in Figure 2 and Figure 3 The diagram shows the open and closed positions of the disconnector switch 100. More specifically, from... Figure 2 The indicated trip position is switched to Figure 3 When the brake is engaged, the turntable rotor 22 of the first turntable 2A can rotate clockwise, for example, by the drive linkage 201 of the drive mechanism 200 mentioned later, wherein the first transmission crank 51 is driven ... Figure 2 Rotate clockwise from the approximate six o'clock position as shown. Figure 3 The approximate nine o'clock position is shown. Accordingly, with the aid of the transmission link 50, the rotation of the turntable rotor 22 of the first turntable 2A is transmitted to the turntable rotor 22 of the second turntable 2B; in other words, it drives the turntable rotor 22 of the second turntable 2B to rotate counterclockwise. In the aforementioned case, the second transmission crank 52, from... Figure 2 Rotate counterclockwise from approximately the three o'clock position as shown. Figure 3 As shown at approximately the twelve o'clock position, since the first cutter arm 4A is fixed to the turntable rotor 22 of the first turntable 2A via the first insulator 3A, and the second cutter arm 4B is fixed to the turntable rotor 22 of the second turntable 2B via the second insulator 3B, the first cutter arm 4A and the second cutter arm 4B can rotate synchronously clockwise and counterclockwise respectively during the aforementioned rotation process, thereby achieving the closing of the circuit. The opening process is the reverse of the aforementioned closing process, and will not be described in detail here.

[0042] In one embodiment, such as Figure 1As shown, the base 1 may have a first outer surface 11 and a second outer surface 12, which are inclined relative to each other at an angle, for example, an obtuse angle, i.e., greater than 90 degrees and less than 180 degrees. Of course, the invention is not limited to this; the angle can also be an acute angle or a right angle. The turntable body 21 of the first turntable 2A is fixed to the first outer surface 11, and the turntable body 21 of the second turntable 2B is fixed to the second outer surface 12, such that the first insulator 3A and the second insulator 3B are arranged in a V-shape. Specifically, the first outer surface 11 and the second outer surface 12 may intersect each other. Of course, the invention is not limited to this; for example, the first outer surface 11 and the second outer surface 12 may also be connected by other surfaces instead of being directly connected.

[0043] Furthermore, the transmission mechanism 5 may also include a third transmission crank 53, which is fixed to the turntable rotor 22 of the first turntable 2A and used to connect the drive link 201 of the drive mechanism 200. Accordingly, the drive mechanism 200 can directly drive the turntable rotor 22 of the first turntable 2A to rotate, thereby driving the turntable rotor 22 of the second turntable 2B to rotate. In this case, the rotation of the turntable rotor 22 of the first turntable 2A is driven by the drive link 201 connected to the drive mechanism 200 via the third transmission crank 53. In other words, the drive link 201 pushes the turntable rotor 22 of the first turntable 2A to rotate, thereby driving the turntable rotor 22 of the second turntable 2B to rotate, and ultimately realizing the opening and closing of the first cutter arm 4A and the second cutter arm 4B.

[0044] Furthermore, the transmission mechanism 5 may also include a fourth transmission crank 54, which is fixed to the turntable rotor 22 of the first turntable 2A and used to connect to the interphase transmission link 300 for synchronizing the opening and closing operations of multiple disconnecting switches 100. Accordingly, since the interphase transmission link 300 connects the fourth transmission crank 54 of the transmission mechanism 5 of each disconnecting switch 100, the turntable rotors 22 of the first turntable 2A of these disconnecting switches 100 can rotate synchronously.

[0045] In addition, refer to Figure 3 The present invention also proposes a multiphase disconnector assembly 1000. The multiphase disconnector assembly 1000 includes a plurality of disconnectors 100, a drive mechanism 200, and interphase transmission links 300. The drive mechanism 200 drives the first turntable 2A of one of the disconnectors 100 to rotate, and the interphase transmission links 300 are connected to a fourth transmission crank 54 of each of the disconnectors 100. Accordingly, the plurality of disconnectors 100 of the multiphase disconnector assembly 1000 can achieve synchronous opening and closing. In particular, the multiphase disconnector assembly 1000 may include three disconnectors 100 arranged at intervals along a straight line.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A disconnecting switch (100), characterized in that, The disconnector switch (100) includes: Base (1); A first turntable (2A) and a second turntable (2B), each of the first turntable (2A) and the second turntable (2B) comprising a turntable body (21) and a turntable rotor (22) rotatable relative to the turntable body (21), and the turntable body (21) of the first turntable (2A) and the turntable body (21) of the second turntable (2B) are fixed to the base (1). A first insulator (3A) and a second insulator (3B), one end of the first insulator (3A) being fixed to the turntable rotor (22) of the first turntable (2A), and one end of the second insulator (3B) being fixed to the turntable rotor (22) of the second turntable (2B). A first cutter arm (4A) and a second cutter arm (4B), wherein the first cutter arm (4A) is fixed to the other end of the first insulator (3A), and the second cutter arm (4B) is fixed to the other end of the second insulator (3B); and Transmission mechanism (5), the transmission mechanism (5) includes: A first drive crank (51) and a second drive crank (52), the first drive crank (51) being fixed to the turntable rotor (22) of the first turntable (2A), and the second drive crank (52) being fixed to the turntable rotor (22) of the second turntable (2B); and A transmission connecting rod (50) is provided, with its two ends connected to the first transmission crank (51) and the second transmission crank (52), respectively. When the first turntable (2A) rotates, the turntable rotor (22) of the turntable (2B) can drive the turntable rotor (22) of the second turntable (2B) to rotate through the transmission mechanism (5), so that the disconnecting switch (100) can switch between the closed position and the open position. In the closed position, the first knife arm (4A) and the second knife arm (4B) are connected to each other, while in the open position, the first knife arm (4A) and the second knife arm (4B) are disconnected.

2. The disconnector (100) according to claim 1, characterized in that, The base (1) has a first outer surface (11) and a second outer surface (12), the first outer surface (11) and the second outer surface (12) being inclined at an angle relative to each other, wherein the turntable body (21) of the first turntable (2A) is fixed on the first outer surface (11) and the turntable body (21) of the second turntable (2B) is fixed on the second outer surface (12), such that the first insulator (3A) and the second insulator (3B) are arranged in a V-shape.

3. The disconnector switch (100) according to claim 2, characterized in that, The angle is greater than 90 degrees and less than 180 degrees.

4. The disconnector (100) according to claim 2, characterized in that, The first outer surface (11) and the second outer surface (12) intersect each other.

5. The disconnector (100) according to claim 1, characterized in that, The transmission mechanism (5) further includes a third transmission crank (53), which is fixed to the turntable rotor (22) of the first turntable (2A) and is used to connect the drive link (201) of the drive mechanism (200).

6. The disconnector (100) according to any one of claims 1 to 5, characterized in that, The transmission mechanism (5) further includes a fourth transmission crank (54), which is fixed to the turntable rotor (22) of the first turntable (2A) and is used to connect an interphase transmission link (300) for synchronizing the opening and closing operations of the multiple disconnecting switches (100).

7. A multiphase disconnector assembly (1000), characterized in that, The multiphase disconnector assembly (1000) includes: Multiple disconnect switches (100) according to claim 6; Drive mechanism (200) for driving the first turntable (2A) of one of the plurality of disconnecting switches (100) to rotate; and The interphase drive link (300) is connected to the fourth drive crank (54) of each of the plurality of disconnect switches (100).

8. The multiphase disconnector assembly (1000) according to claim 7, characterized in that, The multiphase disconnector assembly (1000) includes three disconnectors (100) arranged at intervals from each other in a straight line.

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