CN205104826U - Solid insulated cabinets double knives formula switch structure - Google Patents

Abstract

The utility model discloses a double-knife switch structure of a solid insulation cabinet, which comprises a bus cone conductor, a vacuum interrupter, an outlet seat and an outlet terminal contact, a bus cone conductor, a vacuum interrupter, an outlet seat and an outlet terminal contact The epoxy resin is poured into the pole; the busbar cone conductor, the outlet seat and the outlet end contacts are all conductors, and the vacuum interrupter chamber is equipped with a moving conductive contact and a static conductive contact, and one end of the soft connection is connected to the vacuum interrupter. The other end of the flexible connection is fixed on the busbar cone conductor; the soft connection is connected with a circuit breaker pull rod, and the circuit breaker pull rod is fixed on the movable conductive contact of the vacuum interrupter. The utility model can realize the fast opening and closing of the grounding switch, so that the grounding switch has reliable short-circuit closing and closing ability; the reliability and service life of the equipment are greatly improved.

Description

A double-pole switch structure in a solid insulation cabinet

technical field

The utility model relates to a switch structure, in particular to a double-knife switch structure of a solid insulation cabinet.

Background technique

Domestic solid insulated ring network cabinets have been in a period of rapid development, but at present the grounding switches of some solid insulated cabinets on the market do not have short-circuit closing capabilities, and some of them do not have short circuit because the grounding switches of solid insulated cabinets cannot be quickly grounded. Closing ability; and the earthing switch that can be grounded quickly on the market now basically uses a knife switch with the isolating switch. This structure will either cause excessive impact on the isolating switch or the short-circuit making ability of the earthing switch cannot meet the requirements of the national standard. , is a test for the cost and life of the entire solid insulated ring network cabinet; at present, some grounding switches of solid insulated cabinets on the market do not have the ability to make short With short-circuit making ability.

Utility model content

Aiming at the deficiencies existing in the prior art, the utility model provides a solid insulation cabinet that can realize rapid opening and closing of the grounding switch, so that the grounding switch has reliable short-circuit closing and closing capabilities; greatly improving the reliability and service life of the equipment. Knife switch structure.

In order to achieve the above object, the utility model is realized through the following technical solutions:

A double-pole switch structure of a solid insulation cabinet, including a busbar cone conductor, a vacuum interrupter, an outlet seat and an outlet terminal contact, and the busbar cone conductor, vacuum interrupter, outlet seat and outlet terminal contacts are cast by epoxy resin In the pole; the busbar cone conductor, the outlet seat and the outlet terminal contacts are all conductors, and the vacuum interrupter is equipped with a dynamic conductive contact and a static conductive contact, and one end of the soft connection is connected to the dynamic conductive contact of the vacuum interrupter. The other end of the soft connection is fixed on the busbar cone conductor; the soft connection is connected with a circuit breaker pull rod, which is fixed on the moving conductive contact of the vacuum interrupter, and the circuit breaker pull rod is equipped with a circuit breaker guide sleeve, and the outgoing line One end of the seat is connected to the static conductive contact of the vacuum interrupter, and the other end of the outlet seat is connected to the isolation switch; the two sides of the isolation switch and the outlet seat are equipped with compression springs, and one end of the isolation switch is connected to the steering bearing. One end of the isolating switch is connected to the pull rod of the isolating switch. The other end of the isolating switch is equipped with a disc spring assembly. One end of the pull rod of the isolating switch is connected to the steering bearing and the isolating switch. The switch pull rod set is equipped with a disconnector guide sleeve, the disconnector rod is connected with a grounding switch, the grounding switch is provided with a second disc spring assembly, the grounding switch is provided with a grounding switch spring assembly, and the other end of the grounding switch spring assembly is connected to the crank arm ; One end of the crank arm is fixed on the rotating shaft, one end of the crank arm is linked with the rotating shaft, and the other end of the crank arm is connected with the grounding switch spring assembly.

Further, the isolation switch is double blades.

Further, the end of the isolating knife switch is provided with convex points.

Further, the first disc spring assembly is composed of a disc spring, a pin, a limiting sleeve and a ferrule.

Further, the second disc spring assembly is composed of a disc spring, a pin, a limiting sleeve and a ferrule.

Further, the grounding switch spring assembly is composed of a compression spring and a compression plate.

The double-pole switch structure of the solid insulation cabinet adopts the above technical scheme, which can realize the rapid opening and closing of the grounding switch, so that the grounding switch has a reliable short-circuit closing ability; at the same time, because the isolation switch and the grounding switch do not pass through the same power source , Under the premise of satisfying the short-circuit making ability of the grounding switch, it will not cause excessive impact of the isolating switch, which greatly improves the reliability and service life of the equipment.

Description of drawings

The utility model is described in detail below in conjunction with accompanying drawing and specific embodiment;

Fig. 1 is a structural diagram of the power-on state of the double-pole switch structure of the solid insulation cabinet of the present invention.

Fig. 2 is a structural diagram of the grounding state of the double-pole switch structure of the solid insulation cabinet of the present invention.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

As shown in Figure 1 and Figure 2, a double-pole switch structure of a solid insulation cabinet includes a bus cone conductor 1, a vacuum interrupter 3, an outlet seat 5 and an outlet terminal contact 10, a bus cone conductor 1, a vacuum interrupter The chamber 3, the outlet seat 5 and the outlet contact 10 are poured in the pole 4 by epoxy resin; the pole 4 is made of recyclable insulating material, and the pole 4 is provided with a skirt, which not only ensures the high voltage on the conductive circuit It is insulated from the external operating mechanism and the cabinet, and is conducive to heat dissipation, because the material can be recycled and is conducive to environmental protection; the busbar cone conductor 1, the outlet seat 5 and the outlet terminal contact 10 are all conductors, and the vacuum interrupter 3 There are moving conductive contacts and static conductive contacts inside, and the opening and closing of the moving conductive contacts and static conductive contacts can realize the opening and closing of the circuit breaker. The material of the soft connection 2 is copper foil, and one end of the soft connection 2 is connected to the vacuum The movable conductive contact of the arc extinguishing chamber 3 is connected, and the other end of the soft connection 2 is fixed on the bus cone conductor 1, and the movement of the movable conductive contact of the vacuum interrupter 3 does not affect the connection at both ends of the soft connection 2; the soft connection 2 is connected There is a circuit breaker pull rod 11, which is fixed on the movable conductive contact of the vacuum interrupter 3, and the circuit breaker pull rod 11 is set with a circuit breaker guide sleeve 12, and the circuit breaker pull rod 11 realizes linear motion through the circuit breaker guide sleeve 12, Ensure the opening and closing of the dynamic and static conductive contacts of the vacuum interrupter 3 to realize the opening and closing of the circuit breaker; the pull rod 11 of the circuit breaker is made of insulating material and has a skirt to ensure that the high voltage on the conductive circuit and the external Insulation between the operating mechanism and the cabinet body; the guide sleeve 12 of the circuit breaker ensures the linear movement of the pull rod 11 of the circuit breaker, thereby ensuring the mechanical performance of the vacuum interrupter 3; the static electrical contact between one end of the outlet seat 5 and the vacuum interrupter 3 The other end of the outlet seat 5 is connected to the isolation knife switch 7; the material of the isolation knife switch 7 is T2 copper, and the two sides of the isolation knife switch 7 and the outlet seat 5 are equipped with compression springs 6, and one end of the isolation knife switch 7 is connected to the steering The bearing 8 is connected, one end of the isolating knife switch 7 is connected with the pull rod 14 of the isolating switch, the other end of the isolating knife switch 7 is equipped with a disc spring assembly 9, and the installation of the compression spring 6 must have a certain amount of deformation. The good contact of the outlet seat 5 also ensures that the isolation switch 7 rotates normally under a certain external force; the steering bearing 8 can ensure that the isolation switch pull rod 14 pulls the isolation switch 7 more smoothly; the isolation switch pull rod 14 is made of insulating material, and isolating The switch pull rod 14 is provided with a skirt to ensure the insulation between the high voltage on the conductive circuit and the external operating mechanism and the cabinet. One end of the isolating switch pull rod 14 is connected with the steering bearing 8 and the isolating knife switch 7. The isolating switch pull rod 14 The other end is connected with the external operating mechanism. The isolating switch pull rod 14 is set with a isolating switch guide sleeve 13. The isolating switch pull rod 14 is connected with a grounding switch 15. The grounding switch 15 is provided with a second disc spring assembly 16. The grounding switch 15 is provided with a Grounding switch spring assembly 17, the other end of grounding switch spring assembly 17 links to each other with crank arm 18; The grounding switch spring assembly 17 is connected; the grounding switch spring assembly 17 can realize the connection The ground switch opens and closes quickly. When the rotating shaft 19 turns to a certain angle, the ground switch spring assembly 17 and the crank arm 18 are in a straight line. At this time, the compression spring in the ground switch spring assembly 17 is the largest. Before, the external force provided by the external operating mechanism of the earthing switch needs to overcome the resistance of the compression spring. After this critical point, the external operating mechanism of the earthing switch no longer needs to provide power, and the spring assembly 17 of the earthing switch can drive the crank arm 18, the rotating shaft 19 and the grounding knife The gate 15 rotates, because the spring releases energy by itself, so the grounding switch can be quickly opened and closed, so that the grounding switch has a reliable short-circuit closing ability; under the action of the isolation switch guide sleeve 13 and the external operating mechanism, the isolation switch pull rod 14 drives the isolation switch Knife switch 7 rotates, thereby realizes opening and closing of isolating switch, as shown in Figure 1, isolating switch is closed, and as shown in Figure 2, isolating switch is opened; The head is provided with a convex point, and the isolating knife switch 7 is rotated to make the convex point at one end contact with the contact 10 of the outlet end, and the isolating switch is closed. As shown in Figure 2, the isolating switch is opened; the first disc spring assembly 9 is formed by the disc spring assembly Spring, pin, limit sleeve and ferrule. When the isolation knife switch 7 rotates to make the convex point at one end contact with the outlet terminal contact 10, the disc springs on both sides of the isolation knife switch 7 have a certain amount of deformation. Ensure that the isolation knife switch 7 is in good contact with the outlet terminal contact 10, and there must be a certain contact pressure to offset the electric repulsion generated when the high voltage is applied; the second disc spring assembly 16 is composed of a disc spring, a pin, a limit When the grounding knife switch 15 is rotated so that the bump at one end contacts the contact 10 at the outlet end, the disc springs on both sides of the grounding knife switch 15 have a certain amount of deformation. It is necessary to ensure that the grounding knife switch 15 and The contact 10 at the outlet end should have good contact and a certain contact pressure, which is used to offset the electric repulsion force generated when the high voltage is applied, so as to realize reliable grounding.

As shown in Figure 1, the conductive circuit is composed as follows: connect the main busbar to the busbar cone conductor 1, connect the busbar cone conductor 1 to the soft connection 2, connect the soft connection 2 to the dynamic conductive contact of the vacuum interrupter 3, and operate the circuit breaker The pull rod 11 makes the dynamic and static conductive contacts of the vacuum interrupter 3 (opening and closing of the dynamic and static conductive contacts realize the opening and closing of the circuit breaker), the static conductive contacts of the vacuum interrupter 3 and the outlet seat 5 Connected, the outlet seat 5 is connected with the isolating knife switch 7, the isolating switch pull rod 14 is operated, the bump of one end of the isolating knife switch 7 is rotated to make contact with the contact 10 of the outlet end, the isolating switch is closed, and the contact 10 of the outlet end is connected to the outlet terminal Cable connection, so as to realize the conduction of the whole circuit from the main busbar to the outgoing cable; the grounding knife switch 15, the disc spring assembly 16, the grounding switch spring assembly 17, the crank arm 18, and the rotating shaft 19 are installed on the external operating mechanism of the grounding switch; the grounding switch The spring assembly 17 is composed of a compression spring and a pressing plate. One end of the spring assembly 17 of the grounding switch is fixed on the upper plate of the external operating mechanism of the grounding switch. , so that the rotating shaft 19 drives the grounding knife switch 15 to rotate, and under the action of the grounding switch spring assembly 17, it is ensured that the grounding knife switch 15 is connected to the outlet contact 10, the grounding switch is closed, and the electricity of the outgoing cable is connected through the grounding knife switch 15 Connect to the grounding copper bar for grounding.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (5)

1. a solid insulation cabinet double knife type construction of switch, comprise bus cone conductor, vacuum interrupter, wire outlet seat and leading-out terminal contact, it is characterized in that: bus cone conductor, vacuum interrupter, wire outlet seat and leading-out terminal contact by poured with epoxy resin in pole, bus cone conductor, wire outlet seat and leading-out terminal contact are electric conductor, and vacuum extinction indoor are provided with moving conductive contact and quiet conductive contact, and the one end be flexible coupling is connected with the moving conductive contact of vacuum interrupter, and the other end be flexible coupling is fixed on bus cone conductor, be flexible coupling and be connected with circuit breaker tie rod, circuit breaker tie rod is fixed on the moving conductive contact of vacuum interrupter, circuit breaker tie rod is set with circuit breaker fairlead, and one end of wire outlet seat is connected with the quiet conductive contact of vacuum interrupter, and the other end of wire outlet seat is connected with isolation switch, stage clip is equipped with in the both sides of isolation switch and wire outlet seat, one end of isolation switch is connected with steering bearing, one end of isolation switch is connected with isolating switch pull bar, the other end of isolation switch is equipped with dished spring assembly, one end of isolating switch pull bar is connected with steering bearing and isolation switch, the other end of isolating switch pull bar is connected with external manipulation mechanism, isolating switch drag link sleeve is equipped with isolating switch fairlead, isolating switch pull bar is connected with grounding switch, grounding switch is provided with the second dished spring assembly, grounding switch is provided with earthed switch spring assembly, the other end of earthed switch spring assembly is connected with connecting lever, one end of connecting lever is fixing on the rotating shaft, and one end of connecting lever and rotation axis link, and the other end of connecting lever is connected with earthed switch spring assembly.

2. solid insulation cabinet double knife type construction of switch according to claim 1, is characterized in that: described isolation switch is double blade.

3. solid insulation cabinet double knife type construction of switch according to claim 1, is characterized in that: the termination of described isolation switch is provided with salient point.

4. solid insulation cabinet double knife type construction of switch according to claim 1, is characterized in that: described second dished spring assembly is made up of disc spring, pin, stop collar and cutting ferrule.

5. solid insulation cabinet double knife type construction of switch according to claim 1, is characterized in that: described earthed switch spring assembly is made up of stage clip and pressing plate.