CN219040372U - Circuit breaker spring mechanism for ring main unit - Google Patents
Circuit breaker spring mechanism for ring main unit Download PDFInfo
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- CN219040372U CN219040372U CN202223521616.2U CN202223521616U CN219040372U CN 219040372 U CN219040372 U CN 219040372U CN 202223521616 U CN202223521616 U CN 202223521616U CN 219040372 U CN219040372 U CN 219040372U
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- spring
- circuit breaker
- shell
- main unit
- ring main
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
The circuit breaker spring mechanism for the ring main unit comprises a shell, a spring and an armature, wherein the spring and the armature are arranged in the shell, a spring seat is arranged on the inner wall of the shell, and the spring is assembled on the spring seat; the spring holder includes the installation sleeve pipe, evenly distributed has the arc arch on the installation sleeve pipe outer wall, and the installation sleeve pipe front end slides and is equipped with the guide bar, and armature assembly is terminal in the guide bar, spring front end and installation sleeve pipe fixed connection, spring rear end and guide bar tip fixed connection, and the spring housing is located on the guide bar. The utility model discloses a circuit breaker spring mechanism for a ring main unit, which is characterized in that a spring mounting seat and a guide rod are arranged in a shell, so that on one hand, the movement of an armature is guided, and on the other hand, the mounting sleeve and the guide rod are arranged to break uneven electric fields in the shell, so that the insulation performance of the circuit breaker is improved, the safety of the circuit breaker in the use process is effectively improved, and the circuit breaker spring mechanism is particularly suitable for an environment-friendly gas-type insulation ring main unit with high requirements on the insulation performance of the circuit breaker.
Description
Technical Field
The utility model belongs to the technical field of ring main unit circuit breakers, and particularly relates to a circuit breaker spring mechanism for a ring main unit.
Background
The basic structure of the circuit breaker is basically the same although the variety is many. The structure of the breaker mainly comprises a contact system, an arc extinguishing device, various trippers, an operating mechanism and the like.
The three contacts of the circuit breaker are connected in series in a three-phase main circuit, the coil of the electromagnetic release and the thermal element of the thermal release are also connected in series with the main circuit, and the coil of the undervoltage release is connected in parallel with the main circuit.
When the breaker is closed, the three main contacts hook the hook by the locking key, overcomes the tensile force of the spring and keeps the closed state. When the electromagnetic release is attracted or the bimetallic strip of the thermal release is heated to bend or the undervoltage release is released, any action of the electromagnetic release, the lever can be jacked up, the hook and the locking key are separated, and the main contact breaks the circuit.
When the circuit works normally, the electromagnetic force generated by the coil of the electromagnetic release cannot attract the movable iron core, and when the circuit is short-circuited and a large overcurrent occurs, the electromagnetic force generated by the coil is increased enough to attract the movable iron core, so that the main contact is disconnected and the main circuit is cut off; if overload occurs in the circuit, but the overload current flowing through the heating element of the thermal trip can cause the bimetallic strip to be heated and bent when the current does not reach the current of the action of the electromagnetic trip, the lever is jacked up, and the contact is separated to open the circuit, so that the overload protection effect is achieved; if the power supply voltage drops more or loses voltage, the electromagnetic force of the undervoltage release is reduced, so that the movable iron core is released, and the contacts are disconnected to cut off the circuit, thereby playing the roles of undervoltage or voltage loss protection.
Existing ring main unit circuit breakers, particularly ring main units using gas insulation, are often designed to be placed on other mechanisms of the circuit breaker. In the practical use process of the spring mechanism, one end of the spring is often directly connected with the shell of the circuit breaker, and the other end of the spring is connected with the armature, so that whether the armature is pulled or not is controlled according to whether the electromagnetic coil is electrified or not.
Because the number of spring turns is more, does not set up electric field balance mechanism, often can form inhomogeneous electric field near the spring, influence the insulating properties of circuit breaker, in addition, the spring is round-round structure, and its peripheral surface creepage distance is shorter, also can influence the insulating properties of circuit breaker, finally influences the usability and the security of circuit breaker.
Disclosure of Invention
The utility model aims to provide a circuit breaker spring mechanism for a ring main unit, which has good use effect and can improve the creepage distance.
In order to solve the technical problems, the utility model provides the following technical scheme: the circuit breaker spring mechanism for the ring main unit comprises a shell, a spring and an armature, wherein the spring and the armature are arranged in the shell, a spring seat is arranged on the inner wall of the shell, and the spring is assembled on the spring seat; the spring holder includes the installation sleeve pipe, evenly distributed has the arc arch on the installation sleeve pipe outer wall, and the installation sleeve pipe front end slides and is equipped with the guide bar, and armature assembly is terminal in the guide bar, spring front end and installation sleeve pipe fixed connection, spring rear end and guide bar tip fixed connection, and the spring housing is located on the guide bar.
A spring installation chamber is arranged in the shell, the top and the front end of the spring installation chamber are communicated with the shell, and a spring seat is assembled in the spring installation chamber.
The spring holder still includes the mounting panel, and the fixed setting of installation sleeve pipe is on the mounting panel, and the mounting panel is the rectangle, and the contained angle of mounting panel is the circular arc angle.
An arc transition section is connected between the adjacent arc-shaped bulges.
An arc-shaped transition surface is connected between the rear end surface and the bottom surface of the spring installation chamber.
An adjusting module is connected between the spring mounting chamber and the shell.
The adjusting module comprises an adjusting rod, the adjusting rod is movably arranged on the side wall of the shell, and the front end of the adjusting rod is fixedly connected with the rear end of the spring mounting chamber; the rear end of the adjusting rod extends out of the shell.
The adjusting rod is provided with external threads, the shell is provided with internal threads in cooperation with the external threads, and the adjusting rod is in threaded connection with the shell; the adjusting rod is provided with a nut positioned at the outer side of the shell.
A sealing ring is arranged between the adjusting rod and the nut.
Through the technical scheme, the utility model has the beneficial effects that: 1. the spring mounting seat and the guide rod are arranged in the shell, so that on one hand, the movement of the armature is guided, and on the other hand, the mounting sleeve and the guide rod are used for breaking the uneven electric field in the shell, improving the insulation performance of the circuit breaker, effectively improving the safety of the circuit breaker in the use process, and being particularly suitable for environment-friendly gas type insulation ring network boxes with high requirements on the insulation performance of the circuit breaker. 2. The arc-shaped bulge and the arc-shaped connecting section arranged on the mounting sleeve can effectively increase the creepage distance of the insulated surface and improve the withstand voltage level. 3. The adjusting module improves the flexibility in the using process of the circuit breaker, and can be adjusted outside.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1;
FIG. 2 is a schematic view of the spring seat of FIG. 1;
FIG. 3 is a schematic view in semi-section of FIG. 2;
fig. 4 is a schematic structural diagram of embodiment 2.
Detailed Description
Embodiment 1, circuit breaker spring mechanism for looped netowrk case, as shown in fig. 1~3, including casing 1, install spring 3 and armature 2 in casing 1, wherein, casing 1 is casing 1 of circuit breaker, and other components of circuit breaker all set up in casing 1. The armature 2 is connected to the end of the spring 3, so that the spring 3 can drive the armature 2 to move back and forth in the shell 1, and the breaking function is realized.
In order to facilitate the assembly of the spring 3, a spring 3 seat is arranged on the inner wall of the shell 1, and the spring 3 is assembled on the spring 3 seat. Wherein, spring 3 stationary ladle includes installation sleeve 4, and evenly distributed has arc protruding 8 on the installation sleeve 4 outer wall, is connected with arc changeover portion 9 between the adjacent arc protruding 8. In this embodiment, by providing the arc-shaped protrusion 8 and the arc-shaped transition section 9, an uneven electric field around the installation sleeve 4 can be broken up, and the insulation performance of the circuit breaker can be improved. The front end of the mounting sleeve 4 is slidably provided with a guide rod 6, and substantially, the guide rod 6 is slidably arranged in a pipe cavity 7 of the mounting sleeve 4, and the armature 2 is assembled at the front end of the guide rod 6. The front end of the spring 3 is connected to the mounting sleeve 4, the rear end of the spring 3 is fixedly connected to the guide rod 6, and meanwhile, the spring 3 is sleeved on the guide rod 6. In operation, the armature 2 is pulled over by the solenoid and the guide rod 6 is pulled toward the solenoid by the armature 2, at which time the spring 3 is in a stretched state. When the magnetic force in the electromagnetic coil is insufficient to attract the armature 2, the spring 3 pulls the armature 2 so that the armature 2 is disengaged from the electromagnetic coil.
For the installation of the installation sleeve 4 and the casing 1 of being convenient for, the spring 3 seat still includes mounting panel 5, and the fixed setting of installation sleeve 4 is on mounting panel 5, and mounting panel 5 is the rectangle, and the contained angle of mounting panel 5 is the arc angle, also is in order to break inside inhomogeneous electric field through setting up the arc angle, improves the insulating properties of circuit breaker.
The working process is as follows: the mounting sleeve 4 of this embodiment is utilized to realize the assembly of the spring 3 on the housing 1, so that the assembly difficulty is reduced, meanwhile, the guide rod 6 can play a guiding role in the moving process of the armature 2, in addition, the arc-shaped bulge 8 and the arc-shaped transition section 9 arranged on the mounting sleeve 4 break the uneven electric field in the housing 1, and the insulation performance in the housing 1 is improved.
In order to facilitate the adjustment of the performance of the circuit breaker, such as increasing or decreasing the breaking voltage or current, an adjustment module is connected between the spring mounting chamber 10 and the housing 1.
The adjusting module comprises an adjusting rod 11, the adjusting rod 11 is movably arranged on the side wall of the shell 1, and the front end of the adjusting rod 11 is fixedly connected with the rear end of the spring installation chamber 10; the rear end of the adjustment lever 11 protrudes out of the housing 1. By moving the adjustment lever 11 relative to the housing 1, adjustment of the distance between the spring mounting chamber 10 and the housing 1, and thus the distance between the armature 2 and the electromagnetic coil, is achieved.
The adjusting rod 11 is provided with external threads 14, the shell 1 is provided with internal threads in cooperation with the external threads 14, and the adjusting rod 11 is in threaded connection with the shell 1; the adjusting rod 11 is provided with a nut 12 positioned outside the shell 1, and the stability of the adjusting rod 11 on the shell 1 after the adjusting is improved by arranging the nut 12.
In order to ensure tightness, a sealing ring is arranged between the adjusting rod 11 and the nut 12.
When the circuit breaker is used, the nut 12 is firstly loosened, the adjusting rod 11 is rotated to enable more or less adjusting rod 11 to enter the shell 1, the distance between the armature 2 and the electromagnetic coil is adjusted, and then the voltage or current value of the circuit breaker for breaking is adjusted.
The utility model discloses a spring 3 mechanism of a low-voltage circuit breaker for a ring main unit, which is characterized in that a spring 3 mounting seat and a guide rod 6 are arranged in a shell 1, so that on one hand, the movement of an armature 2 is guided, and on the other hand, the mounting sleeve 4 and the guide rod 6 arranged on the other hand break the uneven electric field in the shell 1, improve the insulation performance of the circuit breaker, effectively improve the safety of the circuit breaker in the use process, and are particularly suitable for environment-friendly gas-type insulation ring main units with high requirements on the insulation performance of the circuit breaker.
Claims (9)
1. Circuit breaker spring mechanism for looped netowrk case, its characterized in that: the device comprises a shell, a spring and an armature, wherein the spring and the armature are arranged in the shell, a spring seat is arranged on the inner wall of the shell, and the spring is assembled on the spring seat; the spring holder includes the installation sleeve pipe, evenly distributed has the arc arch on the installation sleeve pipe outer wall, and the installation sleeve pipe front end slides and is equipped with the guide bar, and armature assembly is terminal in the guide bar, spring front end and installation sleeve pipe fixed connection, spring rear end and guide bar tip fixed connection, and the spring housing is located on the guide bar.
2. The circuit breaker spring mechanism for a ring main unit as claimed in claim 1, wherein: a spring installation chamber is arranged in the shell, the top and the front end of the spring installation chamber are communicated with the shell, and a spring seat is assembled in the spring installation chamber.
3. The circuit breaker spring mechanism for a ring main unit according to claim 2, wherein: the spring holder still includes the mounting panel, and the fixed setting of installation sleeve pipe is on the mounting panel, and the mounting panel is the rectangle, and the contained angle of mounting panel is the circular arc angle.
4. A circuit breaker spring mechanism for a ring main unit as claimed in claim 3 wherein: an arc transition section is connected between the adjacent arc-shaped bulges.
5. The circuit breaker spring mechanism for a ring main unit as recited in claim 4, wherein: an arc-shaped transition surface is connected between the rear end surface and the bottom surface of the spring installation chamber.
6. The circuit breaker spring mechanism for a ring main unit according to any one of claims 1 to 5, wherein: an adjusting module is connected between the spring mounting chamber and the shell.
7. The circuit breaker spring mechanism for a ring main unit as recited in claim 6, wherein: the adjusting module comprises an adjusting rod, the adjusting rod is movably arranged on the side wall of the shell, and the front end of the adjusting rod is fixedly connected with the rear end of the spring mounting chamber; the rear end of the adjusting rod extends out of the shell.
8. The circuit breaker spring mechanism for a ring main unit as recited in claim 7, wherein: the adjusting rod is provided with external threads, the shell is provided with internal threads in cooperation with the external threads, and the adjusting rod is in threaded connection with the shell; the adjusting rod is provided with a nut positioned at the outer side of the shell.
9. The circuit breaker spring mechanism for a ring main unit as recited in claim 8, wherein: a sealing ring is arranged between the adjusting rod and the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223521616.2U CN219040372U (en) | 2022-12-29 | 2022-12-29 | Circuit breaker spring mechanism for ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223521616.2U CN219040372U (en) | 2022-12-29 | 2022-12-29 | Circuit breaker spring mechanism for ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219040372U true CN219040372U (en) | 2023-05-16 |
Family
ID=86313381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223521616.2U Active CN219040372U (en) | 2022-12-29 | 2022-12-29 | Circuit breaker spring mechanism for ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219040372U (en) |
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2022
- 2022-12-29 CN CN202223521616.2U patent/CN219040372U/en active Active
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