CN212750783U

CN212750783U - Device with reliable opening structure for circuit breaker

Info

Publication number: CN212750783U
Application number: CN202021806355.7U
Authority: CN
Inventors: 杨龙海; 周磊; 赵文进
Original assignee: Aeg Enterpeise Development Shanghai Co ltd; Gaiqi Switch Shanghai Co ltd
Current assignee: Jiyi Power Technology (Shanghai) Co.,Ltd.
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-03-19
Anticipated expiration: 2030-08-25

Abstract

The utility model relates to a device with reliable opening structure for breaker; the device comprises a closing electromagnet, a microswitch, a closing push rod, a closing locking electromagnet, an opening electromagnet and an opening push plate; the closing push rod is aligned with the closing electromagnet and pushes the closing electromagnet; the opening push plate is aligned with the opening electromagnet and pushes the opening electromagnet; the microswitch is positioned above the closing locking electromagnet; a normally open contact of the microswitch is connected with a closing loop of the circuit breaker in series; the closing push rod is provided with a baffle plate which is associated with a locking electromagnet iron core of the closing locking electromagnet; the closing push rod is provided with a push plate which is associated with a closing electromagnet iron core of the closing electromagnet. The utility model discloses a circuit breaker is at any moment, when receiving the separating brake instruction, even if there is closing instructions this moment simultaneously, and closing instructions does not remove, and the circuit breaker also can separate the floodgate reliably and effectively interrupt the combined floodgate operation.

Description

Device with reliable opening structure for circuit breaker

Technical Field

The utility model relates to a device of reliable separating brake structure, concretely relates to just can effectively interrupt the device that is used for circuit breaker of combined floodgate operation to have reliable separating brake structure when receiving the separating brake instruction.

Background

At present, the requirement on the reliability of power supply is higher and higher, and if a breaker tripping rejection accident occurs, serious accidents such as damage to the stability of a power grid and burning of running equipment occur.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a device for a circuit breaker with a reliable opening structure, which can effectively interrupt the closing operation when receiving an opening command.

The utility model discloses a solve above-mentioned technical problem through following technical scheme: a device with reliable opening structure for breaker; the device with the reliable opening structure for the circuit breaker comprises: the device comprises a closing electromagnet, a microswitch, a closing push rod, a closing locking electromagnet, a separating electromagnet and a separating push plate.

The closing push rod is aligned with the closing electromagnet and pushes the closing electromagnet; the opening push plate is aligned with the opening electromagnet, and the opening push plate pushes the opening electromagnet.

The microswitch is positioned above the closing locking electromagnet; the normally open contact of the microswitch is connected in series with a closing loop of the circuit breaker.

The closing push rod is provided with a baffle plate which is associated with a locking electromagnet iron core of the closing locking electromagnet; the closing push rod is provided with a push plate which is associated with a closing electromagnet iron core of the closing electromagnet.

In the embodiment of the present invention: the downward movement of the locking electromagnet core of the closing locking electromagnet can block the baffle; the extension of the closing electromagnet core of the closing electromagnet can prop against the push plate.

In the embodiment of the present invention: the closing locking electromagnet is arranged on the mounting plate; the micro switch is arranged on the mounting plate; the mounting plate is fixedly mounted on a side plate of the circuit breaker.

In the embodiment of the present invention: the mounting plate is fixedly mounted on a side plate of the circuit breaker by bolts.

In the embodiment of the present invention: the separating brake push plate is arranged on a tripping shaft of the circuit breaker by a bolt.

The utility model discloses an actively advance the effect and lie in: the utility model provides a device that is used for having reliable separating brake structure on circuit breaker has following advantage: the utility model discloses a circuit breaker is at any moment, when receiving the separating brake instruction, even if there is closing instructions this moment simultaneously, and closing instructions does not remove, and the circuit breaker also can separate the floodgate reliably and effectively interrupt the combined floodgate operation.

Drawings

Fig. 1 is a schematic structural diagram of the installation position of the present invention on the circuit breaker.

Fig. 2 is a schematic front view of fig. 1.

Fig. 3 is a schematic diagram of the back structure of fig. 1.

Fig. 4 is a schematic structural diagram of a portion of the closing electromagnet, the micro switch, the closing push rod, and the closing latching electromagnet in fig. 1.

Fig. 5 is one of the structural diagrams of the side plate of the circuit breaker.

Fig. 6 is a second schematic structural view of the side plate of the circuit breaker (the closing spring is removed).

Fig. 7 is a third schematic structural view of a side plate of the circuit breaker (the insulation paper is removed on the basis of fig. 6).

The utility model discloses the name that well reference numeral corresponds:

the device comprises a closing electromagnet 1, a microswitch 2, a closing push rod 3, a closing locking electromagnet 4, an opening electromagnet 5, an opening push plate 6, a mounting plate 7, a side plate 8, a trip shaft 9, a second microswitch 10, insulating paper 11 and a positioning plate 12; a switching-on electromagnet core 101; a baffle plate 301 and a push plate 302; latching electromagnet core 401.

Detailed Description

The following provides a preferred embodiment of the present invention with reference to the accompanying drawings to explain the technical solutions of the present invention in detail.

Fig. 1 is a schematic structural diagram of the installation position of the present invention on the circuit breaker. Fig. 2 is a schematic front view of fig. 1. Fig. 3 is a schematic diagram of the back structure of fig. 1. Fig. 4 is a schematic structural diagram of a portion of the closing electromagnet, the micro switch, the closing push rod, and the closing latching electromagnet in fig. 1. As shown in fig. 1-4, the utility model provides a device that is used for circuit breaker to go up to have reliable separating brake structure includes: the device comprises a closing electromagnet 1, a microswitch 2, a closing push rod 3, a closing locking electromagnet 4, an opening electromagnet 5 and an opening push plate 6; the closing push rod 3 is aligned with the closing electromagnet 1, and the closing push rod 3 pushes the closing electromagnet; the opening push plate 6 is aligned with the opening electromagnet 5, and the opening push plate 6 pushes the opening electromagnet 5; the microswitch 2 is positioned above the closing latching electromagnet 4; a normally open contact of the microswitch 2 is connected with a closing loop of the circuit breaker in series; the closing push rod 3 is provided with a baffle 301 which is associated with a locking electromagnet iron core 401 of the closing locking electromagnet 4; the closing push rod 3 is provided with a push plate 302 which is associated with the closing electromagnet core 101 of the closing electromagnet 1; the downward movement of the latching electromagnet core 401 of the closing latching electromagnet 4 blocks the baffle 301; the extension of the closing electromagnet core 101 of the closing electromagnet 1 will abut against the push plate 302.

The closing and locking electromagnet 4 is arranged on the mounting plate 7 (see fig. 7); the microswitch 2 is arranged on the mounting plate 7; the mounting plate 7 is fixedly mounted on a side plate 8 of the circuit breaker. The mounting plate 7 is fixedly mounted on a side plate 8 of the circuit breaker by bolts. The opening push plate 6 is mounted on a trip shaft 9 (see fig. 3) of the circuit breaker by bolts.

Fig. 5 is a first schematic structural view of a side plate of the circuit breaker, fig. 6 is a second schematic structural view of the side plate of the circuit breaker (the closing spring is removed), and fig. 7 is a third schematic structural view of the side plate of the circuit breaker (the insulating paper is removed on the basis of fig. 6).

The brake separating push plate 6 is mounted on the trip shaft 9 through bolts, and two threaded holes are formed in the corresponding positions of the trip shaft 9. When the tripping shaft rotates clockwise due to the stress of the brake separating push plate during brake separating, the brake separating push plate 6 is driven to rotate clockwise.

A cushion block can be arranged between the brake separating push plate 6 and the trip shaft 9 for adjusting the position to ensure that the push plate can accurately press the poking sheet of the second microswitch 10 (see figure 7) by clockwise rotation during brake separating without staggering.

The second microswitch 10 is wrapped with a layer of insulating paper 11 (see fig. 6) and then mounted on the positioning plate with a countersunk bolt.

The positioning plate 12 is installed on a side plate of the mechanism, four installation holes are formed in the positioning plate 12, two outer sides of the positioning plate are installed on the side plate of the mechanism through bolts, two inner sides of the positioning plate are countersunk holes, and the positioning plate is used for installing the second micro switch 10 on the positioning plate through the countersunk bolts.

And a normally closed contact of the second microswitch 2 is connected with a closing latching electromagnet loop in series.

An embodiment example is given below with reference to the attached drawing, when the closing latching electromagnet is powered, the iron core of the closing latching electromagnet is attracted and moves upwards. At this time, if the closing push rod is pushed to push backwards, the baffle 301 cannot touch the iron core of the locking electromagnet, and the closing push rod can push backwards completely.

When the closing locking electromagnet is not electrified, the iron core of the closing locking electromagnet cannot be sucked to move upwards. At this time, if the closing push rod is pushed to push backwards, the baffle 301 will touch the iron core of the locking electromagnet, and the closing push rod cannot push backwards.

When the closing locking electromagnet is electrified, the iron core of the closing locking electromagnet can be sucked up and move upwards, and the iron core can touch and push the shifting piece of the microswitch 2 to close the normally open contact of the microswitch 2. At this time, because the normally open contact (closed) of the microswitch 2 is connected in series with the closing loop of the circuit breaker, the whole closing loop can be conducted, the closing electromagnet can be started to perform electric closing, and the iron core inside the closing electromagnet can extend backwards.

When the closing locking electromagnet is not electrified, the iron core of the closing locking electromagnet cannot be sucked up to move upwards, the iron core cannot touch the shifting piece of the microswitch 2, and the normally open contact of the microswitch 2 is kept open. At this time, because the normally open contact of the microswitch 2 is connected in series with the closing circuit of the circuit breaker, the whole closing circuit cannot be conducted, the closing electromagnet cannot be started to perform electric closing, and the iron core inside the closing electromagnet cannot extend backwards.

When the brake is not started, the trip shaft cannot rotate, the push plate keeps in the original position and cannot contact with the shifting sheet of the micro switch 2, and the normally closed contact of the micro switch 2 keeps closed. At this time, because the normally closed contact (kept closed) of the microswitch 2 is connected in series with the closing latching electromagnet loop, the whole closing latching electromagnet loop can be switched on, the closing latching electromagnet can be electrified, so that the closing push rod can be completely pushed backwards, the closing electromagnet can be started to perform electric closing, and an iron core in the closing electromagnet can extend backwards.

When the opening is started, the trip shaft rotates clockwise to drive the push plate to rotate clockwise, and the push plate touches and pushes the poking sheet of the second microswitch 10 to open the normally closed contact of the second microswitch 10. At this time, since the normally closed contact (opened) of the second microswitch 10 is connected in series with the closing latching electromagnet loop, the entire closing latching electromagnet loop cannot be switched on, so that the closing latching electromagnet cannot be powered, the closing push rod cannot be pushed backwards, the closing electromagnet cannot be started to perform electric closing, and the iron core inside the closing electromagnet cannot stretch out backwards.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a device that is used for having reliable separating brake structure on circuit breaker which characterized in that: the device with the reliable opening structure for the circuit breaker comprises: the device comprises a closing electromagnet, a microswitch, a closing push rod, a closing locking electromagnet, an opening electromagnet and an opening push plate;

the closing push rod is aligned with the closing electromagnet and pushes the closing electromagnet; the opening push plate is aligned with the opening electromagnet and pushes the opening electromagnet;

the microswitch is positioned above the closing locking electromagnet; a normally open contact of the microswitch is connected with a closing loop of the circuit breaker in series;

2. The apparatus with reliable opening structure for circuit breaker according to claim 1, wherein the blocking plate is blocked by the downward movement of the latching electromagnet core of the closing latching electromagnet; the extension of the closing electromagnet core of the closing electromagnet can prop against the push plate.

3. The apparatus with reliable opening structure for circuit breaker according to claim 1, wherein the closing and locking electromagnet is installed on the installation plate; the micro switch is arranged on the mounting plate; the mounting plate is fixedly mounted on a side plate of the circuit breaker.

4. The apparatus with the reliable opening structure for the circuit breaker as claimed in claim 3, wherein the mounting plate is fixedly mounted on the side plate of the circuit breaker using bolts.

5. The apparatus with reliable opening structure for circuit breaker as claimed in claim 1, wherein the opening push plate is mounted on the trip shaft of the circuit breaker by a bolt.