Disconnecting switch capable of being opened and closed on load

Abstract

The utility model discloses an on-load opening and closing disconnecting switch, which comprises a mounting seat and a contact assembly mounted on the mounting seat, and is characterized in that the contact assembly comprises one or more contact groups, at least one flash barrier is arranged on each of the two sides of each contact group, and the flash barriers are arranged on the mounting seat. And each flash barrier is fixedly mounted on the mounting seat. According to the utility model, at least one flash barrier is arranged on each of the two sides of each contact group, and the flash barriers are used for inter-electrode isolation and isolation from peripheral circuits, so that an effective protection effect is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of disconnect switches, and in particular to a disconnect switch that can be opened and closed under load. Background Technology

[0002] Disconnecting switches are suitable for DC circuits of 3600V and below, with a rated current of 6000A and below. They are used to disconnect and switch circuits when the DC circuit is unloaded. They are mainly used in low and medium voltage high current DC power transmission and distribution systems. As a key electrical component for connecting or disconnecting the power supply and the power network, DC power transmission and distribution systems have long been widely used in domestic and foreign subways, light rail, trolleybuses, metallurgy, atomic energy research and testing institutes and other industries. They can also be directly used with various large DC switch cabinets and traction box-type substations.

[0003] Disconnect switches are used in energy storage devices for no-load connection and disconnection. In practical applications, when a disconnect switch disconnects a circuit, a voltage difference exists across the two ends of the disconnect switch, resulting in low voltage and small current. An electric arc is generated when the disconnect switch is disconnected, which may have a safety impact on the inter-pole or surrounding circuits. Utility Model Content

[0004] In view of the above-mentioned problems of existing disconnect switches, the present invention aims to provide a disconnect switch for load opening and closing, wherein each contact group is provided with at least one arc-blocking plate on both sides, providing inter-pole isolation and isolation from surrounding lines, thereby playing an effective protection role.

[0005] The specific technical solution is as follows:

[0006] A disconnecting switch for load opening and closing includes: a mounting base and a contact assembly, the contact assembly being mounted on the mounting base, the contact assembly including: one or more contact groups, each contact group having at least one arc-blocking plate on both sides, and each arc-blocking plate being fixedly mounted on the mounting base.

[0007] In the aforementioned disconnecting switch that operates under load, the arc-blocking plate is made of insulating material.

[0008] In the aforementioned load-bearing disconnector switch, the arc-blocking plate is detachably connected to the mounting base;

[0009] The bottom of the arc-blocking plate is provided with a connecting plate, which is detachably connected to the mounting base.

[0010] In the aforementioned load-bearing disconnect switch, the connecting plate is fixedly connected to the mounting base by fasteners.

[0011] In the aforementioned load-bearing disconnecting switch, the connecting plate and the arc-blocking plate are integrally formed, or the connecting plate and the arc-blocking plate are connected by fasteners.

[0012] In the aforementioned load-bearing disconnecting switch, when the contact assembly includes a contact group, at least one arc-damping plate is provided on both sides of the contact group on the mounting base.

[0013] When the contact assembly includes multiple contact groups, at least one arc-blocking plate is provided on the mounting base between two adjacent contact groups, and at least one arc-blocking plate is provided on both sides of the contact assembly.

[0014] In the aforementioned load-bearing disconnector switch, the plurality of the arc-blocking plates are arranged at equal intervals.

[0015] The aforementioned disconnecting switch with load opening and closing, wherein each of the contact groups includes: a moving contact and a stationary contact, the moving contact being rotatably mounted on the mounting base, the stationary contact being mounted on the mounting base, and the moving contact being operably positioned in a first position and a second position;

[0016] When the moving contact is in the first position, the moving contact engages with the stationary contact;

[0017] When the moving contact is in the second position, the moving contact is disengaged from the stationary contact;

[0018] The highest point of the arc-blocking plate is higher than the highest point of the moving contact when it is in the first position.

[0019] In the aforementioned disconnecting switch that operates under load, the distance between the stationary contact and the side opposite to the moving contact is less than the width of the arc-blocking plate.

[0020] The aforementioned disconnecting switch with load opening and closing, wherein each of the contact groups further includes: two insulators and two busbars, the two insulators are both mounted on a mounting base, the two busbars are respectively mounted on the two insulators, the stationary contact is mounted on one of the busbars, and the moving contact is rotatably mounted on the other busbar.

[0021] The positive effects of the above technical solution compared with the existing technology are:

[0022] Each contact group of this utility model is provided with at least one arc-blocking plate on both sides, which isolates the electrodes and the surrounding circuits, thus playing an effective protective role. Attached Figure Description

[0023] Figure 1 This is a top view of a disconnecting switch that can be opened and closed under load according to this utility model;

[0024] Figure 2This is a left view of a disconnector switch with load opening and closing according to this utility model;

[0025] In the attached diagram: 1. Mounting base; 2. Contact assembly; 3. Contact group; 4. Arc blocking plate; 5. Connecting plate; 6. Fastener; 7. Drive assembly; 8. Terminal block; 31. Moving contact; 32. Stationary contact; 33. Insulator; 34. Busbar; 71. Motor. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0027] like Figure 1 and Figure 2 As shown, a preferred embodiment of a load-bearing disconnector switch is illustrated, comprising: a mounting base 1 and a contact assembly 2. The contact assembly 2 is mounted on the mounting base 1 and includes: one or more contact groups 3. Each contact group 3 has at least one arc-blocking plate 4 on both sides, and each arc-blocking plate 4 is fixedly mounted on the mounting base 1.

[0028] Furthermore, as a preferred embodiment, the arc-blocking plate 4 is made of insulating material.

[0029] Preferably, the material of the arc-blocking plate 4 is GPO-3.

[0030] Furthermore, as a preferred embodiment, the arc-blocking plate 4 is detachably connected to the mounting base 1.

[0031] Furthermore, as a preferred embodiment, the bottom of the arc-blocking plate 4 is provided with a connecting plate 5, which is detachably connected to the mounting base 1.

[0032] Furthermore, in a preferred embodiment, the connecting plate 5 is fixedly connected to the mounting base 1 by fasteners 6. Alternatively, the connecting plate 5 can be inserted into the mounting base 1, or the connecting plate 5 can be snapped into the mounting base 1.

[0033] Furthermore, as a preferred embodiment, the connecting plate 5 and the arc-blocking plate 4 are an integral structure, or the connecting plate 5 and the arc-blocking plate 4 are fixedly connected by fasteners 6.

[0034] Preferably, fastener 6 is a screw or bolt.

[0035] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention.

[0036] Based on the above, this utility model also has the following embodiments:

[0037] For further embodiments of this utility model, please refer to... Figure 1 and Figure 2As shown, when the contact assembly 2 includes a contact group 3, at least one arc-blocking plate 4 is provided on both sides of the contact group 3 on the mounting base 1.

[0038] In a further embodiment of the present invention, when the contact assembly 2 includes multiple contact groups 3, at least one arc-blocking plate 4 is provided on the mounting base 1 between two adjacent contact groups 3, and at least one arc-blocking plate 4 is provided on both sides of the mounting base 1 located on the contact assembly 2.

[0039] In a further embodiment of this utility model, multiple arc-blocking plates 4 are arranged at equal intervals.

[0040] In a further embodiment of the present invention, each contact group 3 includes: a moving contact 31 and a stationary contact 32. The moving contact 31 is rotatably mounted on the mounting base 1, and the stationary contact 32 is mounted on the mounting base 1. The moving contact 31 is operably positioned in a first position and a second position.

[0041] When the moving contact 31 is in the first position, the moving contact 31 engages with the stationary contact 32;

[0042] When the moving contact 31 is in the second position, the moving contact 31 is disengaged from the stationary contact 32;

[0043] The highest point of the arc-blocking plate 4 is higher than the highest point of the moving contact 31 in the first position.

[0044] In a further embodiment of this utility model, the distance between the stationary contact 32 and the side opposite to the moving contact 31 is less than the width of the arc-blocking plate 4.

[0045] In a further embodiment of the present invention, each contact group 3 further includes: two insulators 33 and two busbars 34. The two insulators 33 are both mounted on the mounting base 1, and the two busbars 34 are respectively mounted on the two insulators 33. The stationary contact 32 is mounted on one busbar 34, and the moving contact 31 is rotatably mounted on the other busbar 34.

[0046] Each contact group 3 of this utility model is provided with at least one arc-blocking plate 4 on both sides, which isolates the electrodes and the surrounding circuits, thus playing an effective protective role.

[0047] In a further embodiment of the present invention, the disconnecting switch that opens and closes under load further includes a drive assembly 7, which is connected to the moving contact 31 in a transmission manner and drives the moving contact 31 to rotate.

[0048] In a further embodiment of this utility model, the drive assembly 7 includes a motor 71 and a linkage assembly. The linkage assembly includes at least one linkage. One end of the linkage is rotatably connected to the moving contact 31, and the other end of the linkage is drively connected to the motor 71. Alternatively, the other end of the linkage is rotatably connected to the motor 71 via a rocker arm, so as to realize the rotation of the moving contact.

[0049] In another embodiment, the linkage assembly includes two linkages. The motor 71 drives the first linkage to rotate, the first linkage drives the second linkage to move, and the second linkage drives the moving contact to rotate.

[0050] In a further embodiment of this utility model, a wiring terminal 8 is installed on the side base plate of the mounting base 1.

[0051] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A disconnecting switch that can be opened and closed under load, comprising: A mounting base and a contact assembly, wherein the contact assembly is mounted on the mounting base, characterized in that the contact assembly comprises: one or more contact groups, each contact group having at least one arc-blocking plate on both sides, and each arc-blocking plate being fixedly mounted on the mounting base.

2. The disconnector switch for load opening and closing according to claim 1, characterized in that, The arc-blocking plate is made of insulating material.

3. The disconnector switch for load opening and closing according to claim 1, characterized in that, The arc-blocking plate is detachably connected to the mounting base; The bottom of the arc-blocking plate is provided with a connecting plate, which is detachably connected to the mounting base.

4. The disconnector switch for load opening and closing according to claim 3, characterized in that, The connecting plate is fixedly connected to the mounting base by fasteners.

5. The disconnector switch for load opening and closing according to claim 3, characterized in that, The connecting plate and the arc-blocking plate are an integral structure, or the connecting plate and the arc-blocking plate are fixedly connected by fasteners.

6. The disconnector switch for load opening and closing according to claim 1, characterized in that, When the contact assembly includes a contact group, at least one arc-blocking plate is provided on both sides of the contact group on the mounting base; When the contact assembly includes multiple contact groups, at least one arc-blocking plate is provided on the mounting base between two adjacent contact groups, and at least one arc-blocking plate is provided on both sides of the contact assembly.

7. The disconnector switch for load opening and closing according to claim 6, characterized in that, The multiple arc-blocking plates are arranged at equal intervals.

8. The disconnector switch for load opening and closing according to claim 1, characterized in that, Each of the contact groups includes a moving contact and a stationary contact, wherein the moving contact is rotatably mounted on the mounting base, the stationary contact is mounted on the mounting base, and the moving contact is operably positioned in a first position and a second position; When the moving contact is in the first position, the moving contact engages with the stationary contact; When the moving contact is in the second position, the moving contact is disengaged from the stationary contact; The highest point of the arc-blocking plate is higher than the highest point of the moving contact when it is in the first position.

9. The disconnecting switch for load opening and closing according to claim 8, characterized in that, The distance between the stationary contact and the side opposite to the moving contact is less than the width of the arc-blocking plate.

10. The disconnecting switch for load opening and closing according to claim 8, characterized in that, Each of the contact groups further includes: two insulators and two busbars, the two insulators being mounted on a mounting base, the two busbars being mounted on the two insulators respectively, the stationary contact being mounted on one of the busbars, and the moving contact being rotatably mounted on the other busbar.

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