CN219979485U - Double-contact high-speed circuit breaker - Google Patents

Abstract

The utility model discloses a double-contact high-speed circuit breaker, which relates to the technical field of circuit breakers and comprises a circuit breaker support and a support plate fixedly arranged at the lower end of the circuit breaker support, wherein the upper end of the side wall of the support plate is fixedly provided with a wire inlet end and a wire outlet end, the ends of the wire inlet end and the wire outlet end are fixedly provided with fixed contacts, the upper end of the circuit breaker support is provided with a guide rod through a buffer assembly, the end of the guide rod is rotatably sleeved with a balance rod, the two ends of the balance rod are fixedly provided with moving contacts, the fixed contacts are in contact fit with the moving contacts, the rod wall of the guide rod is fixedly provided with a fixed iron core, the side wall of the fixed iron core is fixedly provided with a moving iron core, and the outer side of the moving iron core is sleeved with a switching-on coil. According to the switching-on/off coil, the guide rod, the balance rod, the fixed contact and the moving contact, the guide rod can be driven to transversely move through the full magnetic force of the switching-on/off coil, and the balance rod is pushed to be close to the fixed contact, so that the switching-on/off operation of the moving contact is completed rapidly, and the arc extinguishing effect is improved.

Description

Double-contact high-speed circuit breaker

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a double-contact high-speed circuit breaker.

Background

The double-contact high-speed circuit breaker is a protection device applied to a high-voltage power system, and has the main function of rapidly and reliably cutting off a circuit when a power grid fault occurs so as to ensure safe and stable operation of the power system.

The existing circuit breaker is only connected with a single fixed contact and a moving contact when in use, the operation response time is long when the switching-on and switching-off operation is carried out, and meanwhile, quick arc extinction cannot be carried out in the switching-on and switching-off process, so that the service safety of the circuit breaker is reduced, and the service life is short.

Therefore, we propose a dual contact high speed circuit breaker to solve the above problems.

Disclosure of Invention

The present utility model has been made in view of the above-mentioned problems with the conventional dual contact high speed circuit breaker.

Therefore, the utility model aims to provide a double-contact high-speed circuit breaker, which solves the problems that the switching-on and switching-off operation time of a common circuit breaker is long and quick arc extinction cannot be carried out.

In order to achieve the above object, the present utility model provides the following technical solutions:

the double-contact high-speed circuit breaker comprises a circuit breaker support and a support plate fixedly arranged at the lower end of the circuit breaker support, wherein a wire inlet end and a wire outlet end are fixedly arranged at the upper end of the side wall of the support plate, fixed contacts are fixedly arranged at the ends of the wire inlet end and the wire outlet end, a guide rod is arranged at the upper end of the circuit breaker support through a buffer assembly, a balance rod is sleeved at the end part of the guide rod in a rotating manner, moving contacts are fixedly arranged at the two ends of the balance rod, and the fixed contacts are in contact fit with the moving contacts;

the fixed static iron core that is equipped with of pole wall of guide bar, the fixed iron core that moves that is equipped with of lateral wall of static iron core, the outside cover of moving the iron core is equipped with the divide-shut brake coil, and the divide-shut brake coil can have full magnetic force, through the force balance bar principle of balancing pole, drive guide bar lateral shifting under the magnetic force effect of divide-shut brake coil for the balancing pole promotes two moving contact and static contact and divides to close and accomplish the divide-shut brake operation.

Preferably, the buffer assembly comprises a spring, the spring is sleeved on the outer side of one end, far away from the balance bar, of the guide bar, two ends of the spring are fixedly connected with the guide bar and the breaker support respectively, and the spring can store energy and rebound under specified operation, so that the guide bar is driven to move.

Preferably, the spring is an energy storage spring.

Preferably, the one end that the spring was kept away from to the guide bar has been seted up and has been rotated the groove, it locates to rotate the groove cover the outside of balance bar, the inside of balance bar is fixed wears to be equipped with the bracing piece, the guide bar rotates the cover and locates the outside of bracing piece, the setting of bracing piece and guide bar can drive the balance bar and carry out lateral stabilization and remove.

Further, the rotation through holes matched with the rotation of the support rods are formed in two sides of the inside of the rotation groove, so that the support rods can stably rotate in the through holes.

Preferably, the balance bar is arranged in a U shape.

In the technical scheme, the utility model has the technical effects and advantages that:

1. according to the utility model, the full magnetic force of the opening and closing coil can drive the guide rod to transversely move and push the balance rod to approach the fixed contact, so that the moving and static contacts can rapidly complete opening and closing operation, and the arc extinguishing effect is improved.

2. According to the utility model, through the balance rod and the guide rod, the two moving contacts and the fixed contact can be synchronously separated and combined through the force balance principle of the balance rod, so that the operation precision of the circuit breaker is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic perspective view of the balance bar in fig. 1 according to the present utility model.

Reference numerals illustrate:

1. a circuit breaker cradle; 2. a support plate; 3. a wire inlet end; 4. a wire outlet end; 5. a stationary contact; 6. a guide rod; 7. a balance bar; 8. a moving contact; 9. a stationary core; 10. a movable iron core; 11. an opening and closing coil; 12. a spring; 13. a support rod; 14. and rotating the through hole.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The embodiment of the utility model discloses a double-contact high-speed circuit breaker.

Example 1

The utility model provides a double-contact high-speed circuit breaker as shown in figures 1-2, which comprises a circuit breaker bracket 1 and a supporting plate 2 fixedly arranged at the lower end of the circuit breaker bracket 1, wherein an incoming line end 3 and an outgoing line end 4 are fixedly arranged at the upper end of the side wall of the supporting plate 2, fixed contacts 5 are fixedly arranged at the ends of the incoming line end 3 and the outgoing line end 4, a guide rod 6 is arranged at the upper end of the circuit breaker bracket 1 through a buffer component, a balance rod 7 is rotatably sleeved at the end of the guide rod 6, the balance rod 7 is arranged in a U shape, moving contacts 8 are fixedly arranged at the two ends of the balance rod 7, and the fixed contacts 5 are in contact fit with the moving contacts 8;

the fixed iron core 9 that is equipped with of pole wall of guide bar 6, the fixed iron core 10 that is equipped with of lateral wall of iron core 9, the outside cover of iron core 10 is equipped with divide-shut brake coil 11.

When the breaker carries out switching-on and switching-off operation, through the full magnetism of switching-on and switching-off coil 11, can promote guide bar 6 and carry out the removal of horizontal direction, can promote two moving contact 8 simultaneously through the connection of balancing pole 7 to make moving contact 8 and stationary contact 5 contact, accomplish switching-on and switching-off, be used for the switching-on and switching-off operation of breaker, and constitute whole switch circuit under the effect of double contact, have good arc extinguishing ability, the balanced synchronization of double contact is also extremely critical simultaneously, through the force balance principle of balancing pole 7, can carry out synchronous switching-on and switching-off operation with the double contact in the motion process.

Example 2

Embodiment 2 in order to drive the guide rod 6 to move transversely on the basis of embodiment 1, as shown in fig. 1, the buffer assembly comprises a spring 12, the spring 12 is sleeved on the outer side of one end, far away from the balance rod 7, of the guide rod 6, two ends of the spring 12 are fixedly connected with the guide rod 6 and the breaker support 1 respectively, and the spring 12 is an energy storage spring.

Through the setting of spring 12, can make spring 12 compression and have stronger resilience ability under the condition that divide-shut brake coil 11 is full magnetic, through the elasticity reply of spring 12 at this moment, can promote guide bar 6 to drive balancing pole 7 and moving contact 8 remove and accomplish the divide-shut brake.

Example 3

Embodiment 3 in order to make the balance bar 7 drive the two moving contacts 8 to perform synchronous movement based on embodiment 1-2, as shown in fig. 1-2, one end of the guide bar 6 away from the spring 12 is provided with a rotating groove, the rotating groove is sleeved on the outer side of the balance bar 7, the support bar 13 is fixedly penetrated in the balance bar 7, the guide bar 6 is rotatably sleeved on the outer side of the support bar 13, and both sides of the inner part of the rotating groove are provided with rotating through holes 14 matched with the support bar 13 to rotate.

Through the relative rotation connection of the support rod 13 and the rotation through hole 14, the guide rod 6 can drive the two movable contacts 8 to synchronously move and approach the fixed contact 5 through the force balance principle of the balance rod 7 in the transverse movement process, so that the quick opening and closing operation of the circuit breaker is performed.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims (6)

1. The utility model provides a double-contact high-speed circuit breaker, includes circuit breaker support (1) and fixed locating backup pad (2) of circuit breaker support (1) lower extreme, its characterized in that, the lateral wall upper end of backup pad (2) is fixed and is equipped with inlet wire end (3) and outlet wire end (4), the tip of inlet wire end (3) and outlet wire end (4) is all fixed and is equipped with stationary contact (5), the upper end of circuit breaker support (1) is equipped with guide bar (6) through buffer assembly, the tip rotation cover of guide bar (6) is equipped with balancing pole (7), both ends of balancing pole (7) are all fixed and are equipped with moving contact (8), stationary contact (5) and moving contact (8) contact cooperation;

the fixed iron core (9) that is equipped with of pole wall of guide bar (6), the fixed iron core (10) that is equipped with of lateral wall of quiet iron core (9), the outside cover of moving iron core (10) is equipped with divide-shut brake coil (11).

2. The double-contact high-speed circuit breaker according to claim 1, wherein the buffer assembly comprises a spring (12), the spring (12) is sleeved on the outer side of one end, far away from the balance rod (7), of the guide rod (6), and two ends of the spring (12) are fixedly connected with the guide rod (6) and the circuit breaker support (1) respectively.

3. The double contact high speed circuit breaker according to claim 2, characterized in that the spring (12) is a storage spring.

4. The double-contact high-speed circuit breaker according to claim 1, wherein a rotating groove is formed in one end, far away from the spring (12), of the guide rod (6), the rotating groove is sleeved on the outer side of the balance rod (7), a supporting rod (13) is fixedly arranged in the balance rod (7) in a penetrating mode, and the guide rod (6) is rotatably sleeved on the outer side of the supporting rod (13).

5. The double-contact high-speed circuit breaker according to claim 4, wherein the rotation grooves are provided at both inner sides thereof with rotation through holes (14) rotated in cooperation with the support rods (13).

6. Double-contact high-speed circuit breaker according to claim 1, characterized in that the balancing lever (7) is arranged in a U-shape.