CN212725137U

CN212725137U - Novel pole-mounted circuit breaker

Info

Publication number: CN212725137U
Application number: CN202021866127.9U
Authority: CN
Inventors: 陈旭华; 任义
Original assignee: Zhejiang Lingke Electric Co ltd
Current assignee: Zhejiang Lingke Electric Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-03-16
Anticipated expiration: 2030-09-01

Abstract

The utility model discloses a novel circuit breaker on post, including the vase body, the inside of vase body is mirror symmetry and sets up fixed mounting has first insulation sleeve and second insulation sleeve, first insulation sleeve's inner wall is provided with first solenoid, first insulation sleeve's inner wall is provided with second solenoid, and the equal fixed mounting in one side that first insulation sleeve and second insulation sleeve are close to each other has the power connecting plate, the equal fixed mounting in inner wall one side of two power connecting plates has the static contact, first insulation sleeve and second insulation sleeve's inside all is provided with the permanent magnetism piece, the equal fixed mounting in central point of permanent magnetism piece puts has the connecting rod, two connecting rods run through first insulation sleeve and second insulation sleeve's outer wall one side respectively, and the equal fixed mounting in end of connecting rod has the insulation connecting plate. The utility model discloses in the use, the effect of protection circuit that can be better, the reaction is very fast, and is simple to use.

Description

Novel pole-mounted circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field especially relates to a novel circuit breaker on post.

Background

The circuit breaker is a switching device capable of closing, bearing and opening current under normal loop conditions and closing, bearing and opening current under abnormal loop conditions within a specified time, the circuit breaker is divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the using range, the dividing of the high-voltage and low-voltage boundary lines is fuzzy, the circuit breaker is generally called as a high-voltage electrical appliance with the voltage of more than 3kV, the circuit breaker can automatically cut off the circuit when the circuit breaker has serious overload or short-circuit or undervoltage faults, and the like, the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-underheating relay and the like, particularly for a pole circuit breaker, the pole circuit breaker is a circuit breaker which is installed and operated on an electric pole, when undervoltage occurs in the using process, the circuit is still in a connected state, but the current under the undervoltage state can cause damage to the used electrical appliance, therefore, in order to, we propose a new pole top circuit breaker.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the novel circuit breaker on post that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a novel pole-mounted circuit breaker comprises a porcelain insulator body, wherein a first insulating sleeve and a second insulating sleeve are fixedly arranged inside the porcelain insulator body in a mirror symmetry mode, a first electromagnetic coil is arranged on the inner wall of the first insulating sleeve, a second electromagnetic coil is arranged on the inner wall of the first insulating sleeve, power supply connecting plates are fixedly arranged on the sides, close to each other, of the first insulating sleeve and the second insulating sleeve, fixed contacts are fixedly arranged on one sides of the inner walls of the two power supply connecting plates, permanent magnets are arranged inside the first insulating sleeve and the second insulating sleeve, connecting rods are fixedly arranged at the central positions of the permanent magnets, penetrate through the outer wall sides of the first insulating sleeve and the second insulating sleeve respectively, insulating connecting plates are fixedly arranged at the tail ends of the connecting rods, moving contacts matched with the fixed contacts are fixedly arranged at the two ends, close to the fixed contacts, of the two insulating connecting plates, and buffer springs are arranged on the two permanent magnets.

Preferably, the upper side and the lower side of the porcelain insulator body are fixedly provided with an output line and an input line, and the output line and the input line are fixedly provided with installation clamping seats.

Preferably, the two power connection boards are connected in series through a connecting wire.

Preferably, a vertically-distributed limiting ejector rod is fixedly installed in the middle of one of the insulating connecting plates located on the second insulating sleeve, the limiting ejector rod is connected with one of the insulating connecting plates in a sliding mode, and a baffle is fixedly installed on the circumferential outer wall of the limiting ejector rod located on the lower side of the power supply connecting plate.

Preferably, one of the buffer springs located inside the first insulating sleeve is fixedly connected between the end of the buffer spring and the bottom end of the inner wall of the first insulating sleeve, and the other buffer spring is fixedly connected between the top end of the buffer spring and the top end of the inner wall of the second insulating sleeve.

The utility model provides a pair of novel circuit breaker on post, beneficial effect lies in: the scheme is provided with a first electromagnetic coil and a second electromagnetic coil, when the circuit breaker is in a power-on state, current firstly passes through the second electromagnetic coil, voltage flows in the electromagnetic coil, so that a magnetic field is generated in the electromagnetic coil to drive a permanent magnet to move, when an undervoltage state occurs, the magnetic field generated by the second electromagnetic coil cannot drive the permanent magnet at the corresponding position to move to a specified position, so that the whole circuit breaker is disconnected, and conversely, when the circuit breaker is in a normal or overvoltage state, the magnetic field generated by the first electromagnetic coil drives the permanent magnet at the corresponding position to move, so that the whole short-circuit device is in a connected state, but when the circuit breaker is in an overvoltage state, the magnetic field generated by the first electromagnetic coil drives the permanent magnet at the corresponding position to move, so that a moving contact and a static contact on a first insulating sleeve are separated, and therefore, the circuit breaker is disconnected and fast in, and the limiting ejector rod is arranged, so that a magnetic force field generated by the second electromagnetic coil is large when the second electromagnetic coil is placed in an overvoltage state, and the moving contact on the second insulating sleeve is prevented from being damaged due to large contact force between the moving contact and the fixed contact through the limiting ejector rod.

Drawings

Fig. 1 is a schematic structural diagram of a novel pole-mounted circuit breaker according to the present invention;

fig. 2 is a vertical cut-away view of a novel pole-mounted circuit breaker according to the present invention;

fig. 3 is an exploded view of a first insulating sleeve member of a novel pole-mounted circuit breaker according to the present invention.

In the figure: 1. a porcelain insulator body; 2. an output line; 3. installing a card seat; 4. an input line; 5. a first electromagnetic coil; 6. a second electromagnetic coil; 7. a power supply connection board; 8. connecting a lead; 9. a first insulating sleeve; 10. static contact; 11. a second insulating sleeve; 12. permanent magnet blocks; 13. a buffer spring; 14. a connecting rod; 15. an insulating connecting plate; 16. a moving contact; 17. and a limit ejector rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a novel pole-mounted circuit breaker comprises a porcelain insulator body 1, a first insulating sleeve 9 and a second insulating sleeve 11 are fixedly installed inside the porcelain insulator body 1 in a mirror symmetry manner, a first electromagnetic coil 5 is installed on the inner wall of the first insulating sleeve 9, a second electromagnetic coil 6 is installed on the inner wall of the first insulating sleeve 9, power connection plates 7 are fixedly installed on the sides, close to each other, of the first insulating sleeve 9 and the second insulating sleeve 11, fixed contacts 10 are fixedly installed on one sides of the inner walls of the two power connection plates 7, permanent magnets 12 are respectively installed inside the first insulating sleeve 9 and the second insulating sleeve 11, connecting rods 14 are fixedly installed at the central positions of the permanent magnets 12, the two connecting rods 14 respectively penetrate through one sides of the outer walls of the first insulating sleeve 9 and the second insulating sleeve 11, and insulating connection plates 15 are fixedly installed at the tail ends of the connecting rods 14, two insulating connecting plates 15 are fixedly provided with moving contacts 16 matched with the static contact 10 at two ends of the outer wall close to the static contact 10, two permanent magnets 12 are provided with buffer springs 13, an output line 2 and an input line 4 are fixedly provided at the upper side and the lower side of the porcelain insulator body 1, a mounting clamping seat 3 is fixedly provided on the output line 2 and the input line 4, two power supply connecting plates 7 are connected in series through a connecting wire 8, a vertically distributed limit ejector rod 17 is fixedly mounted at the middle position of one insulating connecting plate 15 positioned on the second insulating sleeve 11, the limit ejector rod 17 is connected with one insulating connecting plate 15 in a sliding manner, a baffle is fixedly mounted on the circumferential outer wall of the lower side of the power supply connecting plate 7 of the limit ejector rod 17, the tail end of one buffer spring 13 positioned inside the first insulating sleeve 9 is fixedly connected with the bottom end of the inner wall of the first insulating sleeve, the top end of the other buffer spring 13 is fixedly connected with the top end of the inner wall of the second insulating sleeve 11.

In the utility model, in the using process, the input line 4 and the output line 2 are connected with the subsequent line and are fixed by the mounting clamp seat 3;

then, the current firstly passes through the second electromagnetic coil 6 through the input line 4, the second electromagnetic coil 6 generates a magnetic force field, the permanent magnet blocks 12 in the second insulating sleeve 11 move up and down under the action of the magnetic force field, and when an under-voltage state occurs, the force generated by the magnetic force field is smaller than the resilience force of the buffer spring 13 in the second insulating sleeve 11, so that the permanent magnet blocks 12 move down, and the movable contact 16 and the fixed contact 10 on the second insulating sleeve 11 are separated, thereby disconnecting the line;

on the contrary, in a normal state of current, the force generated by the magnetic field inside the second insulating sleeve 11 is greater than the resilience of the buffer spring 13 inside the second insulating sleeve 11, so that the movable contact 16 on the second insulating sleeve 11 contacts with the fixed contact 10, and the circuit is communicated, and the movable contact 16 and the fixed contact 10 inside the first insulating sleeve 9 are always in contact under the action of the buffer spring 13 at the corresponding position of the permanent magnet 12 inside the first insulating sleeve 9, but in an overvoltage state, the force generated by the magnetic field inside the second insulating sleeve 11 is much greater than the resilience of the buffer spring 13 inside the second insulating sleeve 11, and the upward moving distance is large, so that the limit ejector rod 17 is driven to move upward, and the damage to the movable contact 16 and the fixed contact 10 due to a large upward moving amount can be avoided through the action of the limit ejector rod 17;

finally, when the circuit is in an overvoltage state, the magnetic force field inside the first insulating sleeve 9 is larger than the resilience force of the buffer spring 13 at the corresponding position, so that the permanent magnet blocks 12 at the corresponding positions are driven to move upwards, the movable contact 16 and the fixed contact 10 inside the first insulating sleeve 9 are separated, and the circuit is disconnected.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The novel pole-mounted circuit breaker comprises a porcelain insulator body (1) and is characterized in that a first insulating sleeve (9) and a second insulating sleeve (11) are fixedly arranged inside the porcelain insulator body (1) in a mirror symmetry mode, a first electromagnetic coil (5) is arranged on the inner wall of the first insulating sleeve (9), a second electromagnetic coil (6) is arranged on the inner wall of the first insulating sleeve (9), power supply connecting plates (7) are fixedly arranged on the sides, close to each other, of the first insulating sleeve (9) and the second insulating sleeve (11), static contacts (10) are fixedly arranged on one sides of the inner walls of the two power supply connecting plates (7), permanent magnets (12) are arranged inside the first insulating sleeve (9) and the second insulating sleeve (11), and connecting rods (14) are fixedly arranged at the central positions of the permanent magnets (12), the two connecting rods (14) penetrate through one side of the outer wall of the first insulating sleeve (9) and one side of the outer wall of the second insulating sleeve (11) respectively, insulating connecting plates (15) are fixedly mounted at the tail ends of the connecting rods (14), moving contacts (16) matched with the static contacts (10) are fixedly mounted at two ends, close to the static contacts (10), of the outer walls of the two insulating connecting plates (15), and buffer springs (13) are arranged on the two permanent magnets (12).

2. The novel pole-mounted circuit breaker as claimed in claim 1, wherein the upper and lower sides of the porcelain insulator body (1) are fixedly provided with an output line (2) and an input line (4), and the output line (2) and the input line (4) are fixedly provided with a mounting clamping seat (3).

3. A new pole circuit breaker, according to claim 1, characterized in that said two power connection plates (7) are connected in series by means of a connection wire (8).

4. The novel pole-mounted circuit breaker according to claim 1, wherein a vertically distributed limiting ejector rod (17) is fixedly installed in the middle of one of the insulating connecting plates (15) on the second insulating sleeve (11), the limiting ejector rod (17) is slidably connected with one of the insulating connecting plates (15), and a baffle is fixedly installed on the circumferential outer wall of the limiting ejector rod (17) on the lower side of the power supply connecting plate (7).

5. A new pole circuit breaker, according to claim 1, characterized in that one of the ends of the buffer spring (13) located inside the first insulating sleeve (9) is fixedly connected to the bottom end of the inner wall of the first insulating sleeve (9), and the other one of the top ends of said buffer spring (13) is fixedly connected to the top end of the inner wall of the second insulating sleeve (11).