A vacuum circuit breaker with a magnetic control unit

Abstract

The application relates to the technical field of pole-mounted vacuum circuit breakers, and discloses a vacuum circuit breaker with a magnetic control unit, which comprises a shell, a circuit breaker body arranged in the shell, a first magnetic control structure arranged in the circuit breaker body, an operating rod arranged in the first magnetic control structure, a rotating piece arranged on the shell, a first connecting piece arranged on the operating rod, and the first connecting piece being located on the moving path of the rotating piece. When the intelligent control structure malfunctions or power failure occurs, an operator can quickly cut off the circuit in a manual mode, the safe operation of a power system is ensured, manual tripping operation is convenient and is not limited by the power state, and the operator is safer when maintaining the vacuum circuit breaker.

Description

Technical Field

[0001] This application relates to the technical field of pole-mounted vacuum circuit breakers, and in particular to a vacuum circuit breaker with a magnetic control unit. Background Technology

[0002] Vacuum circuit breakers, as a common protective device in modern electrical structures, are widely used in power distribution networks, substations, and industrial facilities. They are intelligent switching devices with circuit disconnection functions. When the intelligent control structure in a vacuum circuit breaker detects abnormal conditions such as overload, short circuit, or leakage in the circuit, the vacuum circuit breaker can automatically disconnect the faulty circuit to protect the safety of the circuit and equipment.

[0003] In related technologies, a vacuum circuit breaker includes a housing, within which a circuit breaker body is housed. The circuit breaker body contains a magnetic control structure and an intelligent control structure. The magnetic control structure includes an operating lever, which is used to open and close the circuit breaker. The intelligent control structure is used to control the movement of the operating lever.

[0004] When the intelligent control structure of a vacuum circuit breaker malfunctions or there is a power outage, the intelligent control structure cannot open or close the circuit, causing great inconvenience to operators and posing significant safety hazards. Utility Model Content

[0005] In order to improve the problem that the intelligent control structure in a vacuum circuit breaker cannot trip the circuit when it fails, this application provides a vacuum circuit breaker with a magnetic control unit.

[0006] This application provides a vacuum circuit breaker with a magnetic control unit, which adopts the following technical solution:

[0007] A vacuum circuit breaker with a magnetic control unit includes a housing, a circuit breaker body inside the housing, a first magnetic control structure inside the circuit breaker body, an operating lever in the first magnetic control structure, the operating lever being used to open and close the first magnetic control structure, a rotating component on the housing, and a first connecting component on the operating lever, the first connecting component being located on the movement path of the rotating component; when the rotating component rotates towards the first connecting component, the rotating component drives the operating lever to move through the first connecting component, at which time the operating lever opens the first magnetic control structure.

[0008] By adopting the above technical solution, when the user rotates the rotating part, the rotating part abuts against the first connecting part, and the rotating part drives the operating rod to move through the first connecting part to realize the opening of the first magnetic control structure. When the intelligent control structure malfunctions or there is a power outage, the operator can quickly cut off the circuit manually to ensure the safe operation of the power system. The manual opening operation is convenient and not limited by the power supply status, making it safer for the operator to maintain the vacuum circuit breaker.

[0009] Optionally, a drive rod is fixedly connected to the first connector, and the drive rod is rotatably connected to the housing. The circuit breaker body is provided with a second magnetic control structure, and the second magnetic control structure is provided with a moving rod. The moving rod is provided with a second connector, and the second connector is fixedly connected to the drive rod. The second connector is used to control the second magnetic control structure to open. When the rotating part rotates, the first connector drives the second connector to rotate through the drive rod.

[0010] By adopting the above technical solution, when the operator rotates the rotating component, the first connecting component drives the second connecting component to rotate through the drive rod, so that the first magnetic control structure and the second magnetic control structure can be opened synchronously. The operator only needs to rotate the rotating component to open multiple magnetic control structures, saving the operator's operation steps and saving the operator's time to cut off all circuits.

[0011] Optionally, the rotating component is provided with a reset structure, and a spring is provided inside the housing. The spring is disposed on the fixed bar and is used to drive the rotating component to reset. When the spring is in a state of no force, the rotating component does not abut against the first connecting component. When the rotating component abuts against the first connecting component, the spring is in a stretched state.

[0012] By adopting the above technical solution, when the first magnetic control structure opens the circuit breaker, the spring is in a stretched state. The rotating part is reset by the spring drive, so the operator does not need to rotate the rotating part back to its original position, which provides convenience for the operator. In addition, the spring will experience elastic fatigue due to being in a stretched state for a long time. The automatic reset of the spring can reduce the degree of fatigue damage to the spring.

[0013] Optionally, a fixing rod is provided inside the housing, the fixing rod is located on the moving path of the fixing bar, and the fixing rod is used to restrict the rotation of the rotating part; when the fixing rod abuts against the fixing bar, the rotating part abuts against the first connecting member.

[0014] By adopting the above technical solution, the fixing rod is located on the moving path of the fixing bar, so that the fixing rod can block the fixing bar, that is, limit the rotation angle of the rotating part, thereby preventing the spring from deforming too much, reducing the fatigue damage of the spring, and extending the service life of the spring.

[0015] Optionally, the operating lever is provided with a limiting plate, and the first connecting member abuts against the limiting plate and the first magnetic control structure on its corresponding two sides. The operating lever is provided with fasteners, and the limiting plate is fixedly connected to the first magnetic control structure by the fasteners. The limiting plate is used to restrict the first connecting member from detaching from the first magnetic control structure.

[0016] By adopting the above technical solution, the first connector abuts against the limiting plate and the first magnetic control structure on both sides respectively, and the limiting plate is fixedly connected to the first magnetic control structure by fasteners, so that the first connector remains in abutting against the first magnetic control structure, thereby reducing the possibility of the first connector detaching from the first magnetic control structure and making the overall structure more solid and stable.

[0017] Optionally, the first connector includes a first connecting part, a second connecting part, and a third connecting part. The second connecting part is disposed between the first connecting part and the third connecting part. The distance from the second connecting part to the first magnetic control structure is less than the distance from the third connecting part to the first magnetic control structure. The distance from the third connecting part to the first magnetic control structure is used to enable the first magnetic control structure to open the circuit breaker.

[0018] By adopting the above technical solution, when the first magnetic control structure switches from the closed state to the open state, the distance from the second connecting part to the first magnetic control structure is less than the distance from the third connecting part to the first magnetic control structure. This creates space between the third connecting part and the first magnetic control structure for the first magnetic control structure to make way, thereby reducing wear caused by compression between components and extending the service life of the equipment.

[0019] Optionally, the distance from the first connecting portion to the first magnetic control structure is greater than the distance from the second connecting portion to the first magnetic control structure.

[0020] By adopting the above technical solution, since the distance from the first connecting part to the first magnetic control structure is greater than the distance from the second connecting part to the first magnetic control structure, the first connecting part requires less space to rotate than the second connecting part, which makes the overall space occupied by the first connecting part smaller. This makes it easier for manufacturers to produce smaller vacuum circuit breakers and makes the internal structure of the vacuum circuit breaker more compact.

[0021] Optionally, the second connecting part is provided with a protrusion, which abuts against the limiting plate.

[0022] By adopting the above technical solution, since the distances from the first connecting part to the first magnetic control structure and the third connecting part to the first magnetic control structure are both greater than the distance from the second connecting part to the first magnetic control structure, both the first and third connecting parts abut against the limiting plate, and the second connecting part does not directly abut against the limiting plate. By providing a protrusion on the second connecting part and having the protrusion abut against the limiting plate, the protrusion in the second connecting part can abut against the limiting plate, thereby increasing the contact area between the limiting plate and the first connecting member, reducing the pressure on the first connecting member from the limiting plate, and making the first connecting member less susceptible to damage, thus extending the service life of the equipment.

[0023] Optionally, there are two first connectors, the operating lever is located between the two first connectors, and a fixing component is provided inside the housing to fix the two first connectors to each other.

[0024] By adopting the above technical solution, and by setting two first connecting parts, which are fixed by a fixing component, the operating lever can be stably positioned between the two first connecting parts, preventing the operating lever from detaching from the two first connecting parts, thus making the fixation between the operating lever and the first connecting parts more reliable.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. When the user rotates the rotating part, the rotating part abuts against the first connecting part, and the rotating part drives the operating rod to move through the first connecting part to realize the opening of the first magnetic control structure. When the intelligent control structure malfunctions or there is a power outage, the operator can quickly cut off the circuit manually to ensure the safe operation of the power system. The manual opening operation is convenient and not limited by the power supply status, making it safer for the operator to maintain the vacuum circuit breaker.

[0027] 2. When the operator rotates the rotating component, the first connecting component drives the second connecting component to rotate via the drive rod, so that the first magnetic control structure and the second magnetic control structure can be opened synchronously. The operator only needs to rotate the rotating component to open multiple magnetic control structures, saving the operator's operation steps and saving the time to cut off all circuits. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0029] Figure 2 This is a partial structural diagram of an embodiment of this application;

[0030] Figure 3 This is a partial exploded view highlighting the first connector in an embodiment of this application;

[0031] Figure 4 This is an embodiment of the present application. Figure 2 An enlarged schematic diagram of part A in the middle;

[0032] Figure 5 This is a partial structural diagram highlighting the rotating component in an embodiment of this application.

[0033] Reference numerals: 1. Housing; 11. Perforation; 12. Fixing assembly; 121. Fixing block; 122. Fixing member; 13. Limiting block; 14. Positioning rod; 141. Annular groove; 15. Spring; 16. Fixing rod; 17. Limiting rod; 2. Rotating member; 21. Rotating rod; 211. Handle; 212. Fixing strip; 213. Limiting hole; 22. Rotating strip; 3. Circuit breaker body; 31. First magnetic control structure; 311. Operating rod; 312. Limiting plate; 313. Fastener; 32. Second magnetic control structure; 321. Moving rod; 4. First connecting member; 41. First connecting part; 42. Second connecting part; 421. Protrusion; 43. Third connecting part; 5. Drive rod; 51. First fixing hole; 52. Second fixing hole; 6. Second connecting member; 61. Fourth connecting part; 62. Fifth connecting part. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0035] This embodiment discloses a vacuum circuit breaker with a magnetic control unit. (Refer to...) Figure 1 A vacuum circuit breaker with a magnetic control unit includes a housing 1, and a circuit breaker body 3 is fixedly connected inside the housing 1.

[0036] Reference Figure 2 A first magnetic control structure 31 is fixedly connected inside the circuit breaker body 3. An operating rod 311 is slidably connected to the first magnetic control structure 31 along its axis. The operating rod 311 is used to drive the first magnetic control structure 31 to open and close. A rotating component 2 is rotatably connected to the housing 1. The rotating component 2 includes a rotating rod 21 and a rotating bar 22. The rotating bar 22 is fixedly connected to the end of the rotating rod 21 near the first magnetic control structure 31. A through hole 11 is provided on the housing 1 for the rotating rod 21 to pass through. The rotating rod 21 extends out of the through hole 11, and a handle 211 is fixedly connected to the end of the rotating rod 21 that extends out of the through hole 11 and is away from the rotating bar 22.

[0037] Reference Figure 2 and Figure 3 Two first connecting members 4 are rotatably connected inside the housing 1, and the two first connecting members 4 are located on opposite sides of the operating lever 311. The first connecting member 4 includes a first connecting part 41, a second connecting part 42, and a third connecting part 43, with the second connecting part 42 integrally formed between the first connecting part 41 and the third connecting part 43. A protrusion 421 for abutting against the limiting plate 312 is integrally formed in the middle of the second connecting part 42, and the limiting plate 312 can abut against the protrusion 421, the first connecting part 41, and the third connecting part 43.

[0038] Reference Figure 2 and Figure 3The distances from the first connecting part 41 to the first magnetic control structure 31 and from the third connecting part 43 to the first magnetic control structure 31 are both greater than the distance from the second connecting part 42 to the first magnetic control structure 31. The first connecting part 41 is used to save the space required for the first connecting member 4 to rotate, and the space between the third connecting part 43 and the first magnetic control structure 31 is used for the first magnetic control structure 31 to achieve circuit breaking.

[0039] Reference Figure 2 and Figure 3 The housing 1 contains a fixing assembly 12, which includes a fixing block 121 and a fixing member 122. The fixing block 121 abuts against two first connecting members 4 on its corresponding sides. The fixing member 122 includes fixing bolts and fixing nuts, with two sets of each. The fixing bolts pass through the first connecting members 4, the fixing block 121, and the first connecting members 4 in sequence. The fixing nuts cooperate with the fixing bolts to fix the two first connecting members 4 to each other. A limit block 13 is bolted to one end of the fixing block 121 near the rotating bar 22. The limit block 13 is located on the moving path of the rotating bar 22.

[0040] Reference Figure 2 and Figure 3 A limiting plate 312 is fitted onto the operating lever 311. The first connecting member 4 abuts against the limiting plate 312 and the first magnetic control structure 31 on its corresponding sides. The limiting plate 312 prevents the first connecting member 4 from disengaging from the operating lever 311. The limiting plate 312 can abut against two first connecting members 4. At this time, the operating lever 311 is located between the two first connecting members 4, and the fixing assembly 12 fixes the two first connecting members 4 to achieve relative fixation between the first connecting members 4 and the operating lever 311. A fastener 313 is fitted onto the operating lever 311. The fastener 313 includes a fastening bolt, which fixes the limiting plate 312 to the surface of the first connecting member 4 away from the first magnetic control structure 31.

[0041] Reference Figure 2 and Figure 3 The first connecting member 4 has a first fixing hole 51, and a drive rod 5 is fixedly connected in the first fixing hole 51. The drive rod 5 is rotatably connected to the housing 1.

[0042] Reference Figure 2 and Figure 3 When the operator turns the handle 211, the handle 211 drives the rotating bar 22 to rotate towards the limit block 13 via the rotating rod 21. The rotating bar 22 drives the first connecting piece 4 to rotate away from the first magnetic control structure 31 via the limit block 13. The first connecting piece 4 drives the operating rod 311 to move via the limit plate 312, so as to realize the opening of the first magnetic control structure 31.

[0043] Reference Figure 2 and Figure 3The circuit breaker body 3 contains two second magnetic control structures 32, located on either side of the first magnetic control structure 31. A moving rod 321 is slidably connected within each second magnetic control structure 32. Two second connecting pieces 6 are fixedly connected to the drive rod 5. Each second connecting piece 6 has a second fixing hole 52 for the drive rod 5 to pass through. The two second connecting pieces 6 are fixedly connected to different moving rods 321. The structure of the second connecting piece 6 includes a fourth connecting part 61 and a fifth connecting part 62. The structure of the fourth connecting part 61 is the same as that of the second connecting part 42, and the structure of the fifth connecting part 62 is the same as that of the third connecting part 43. Multiple limiting plates 312 and fastening bolts are provided. The structure and positional relationship of the limiting plates 312, fastening bolts, and second connecting pieces 6 are the same as those of the limiting plates 312, fastening bolts, and first connecting pieces 4, meaning that the second connecting pieces 6 can open the second magnetic control structure 32 via the moving rod 321.

[0044] Reference Figure 2 When the first connecting member 4 rotates, the first connecting member 4 drives the second connecting member 6 to rotate through the drive rod 5. The second connecting member 6 drives the moving rod 321 to move, so as to realize the simultaneous opening of the first magnetic control structure 31 and the second magnetic control structure 32.

[0045] Reference Figure 4 A fixing strip 212 is fixedly connected to the rotating rod 21, and a limit hole 213 is opened at the end of the fixing strip 212 away from the rotating rod 21. A positioning rod 14 is fixedly connected inside the housing 1, and an annular groove 141 is opened on the outer surface of the positioning rod 14.

[0046] Reference Figure 4 and Figure 5 A spring 15 is fixedly connected inside the housing 1. Both ends of the spring 15 are inserted into the limiting hole 213 and the annular groove 141, respectively. The spring 15 is used to drive the rotating bar 22 to reset. A fixing rod 16 and a limiting rod 17 are fixedly connected inside the housing 1. Both the fixing rod 16 and the limiting rod 17 are located on the moving path of the fixing bar 212, with the fixing bar 212 positioned between the fixing rod 16 and the limiting rod 17. Both the fixing rod 16 and the limiting rod 17 are used to restrict the rotating bar 22 from continuing to rotate.

[0047] Reference Figure 2 and Figure 5 When the fixed bar 212 abuts against the limiting rod 17, the rotating bar 22 does not abut against the limiting block 13. At this time, the spring 15 is in a state of no force, and both the first magnetic control structure 31 and the second magnetic control structure 32 are in the closed state. When the fixed bar 212 abuts against the fixed rod 16, the rotating bar 22 abuts against the limiting block 13, and the limiting block 13 drives the first connecting member 4 to rotate. At this time, the spring 15 is in the stretched state, and both the first magnetic control structure 31 and the second magnetic control structure 32 are in the open state.

[0048] The implementation principle of a vacuum circuit breaker with a magnetic control unit in this application embodiment is as follows: When the operator rotates the handle 211, the handle 211 drives the rotating bar 22 to rotate through the rotating rod 21. The rotating bar 22 drives the first connecting member 4 to rotate away from the first magnetic control structure 31 through the limiting block 13. The first connecting member 4 drives the operating rod 311 to move through the limiting plate 312. At the same time, the first connecting member 4 drives the driving rod 5 to rotate. The driving rod 5 drives the moving rod 321 to move through the second connecting member 6, so that the first magnetic control structure 31 and the second magnetic control structure 32 can be opened at the same time.

[0049] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0050] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A vacuum circuit breaker with a magnetic control unit, comprising a housing (1), a circuit breaker body (3) disposed within the housing (1), a first magnetic control structure (31) disposed within the circuit breaker body (3), an operating lever (311) disposed within the first magnetic control structure (31), the operating lever (311) being used to open and close the first magnetic control structure (31), characterized in that: The housing (1) is provided with a rotating part (2), and the operating rod (311) is provided with a first connecting part (4). The first connecting part (4) is located on the moving path of the rotating part (2). When the rotating part (2) rotates towards the first connecting part (4), the rotating part (2) drives the operating rod (311) to move through the first connecting part (4). At this time, the operating rod (311) realizes the opening of the first magnetic control structure (31).

2. A vacuum circuit breaker with a magnetic control unit according to claim 1, characterized in that: A drive rod (5) is fixedly connected to the first connector (4). The drive rod (5) is rotatably connected to the housing (1). A second magnetic control structure (32) is provided inside the circuit breaker body (3). A moving rod (321) is provided in the second magnetic control structure (32). A second connector (6) is provided on the moving rod (321). The second connector (6) is fixedly connected to the drive rod (5). The second connector (6) is used to control the second magnetic control structure (32) to open. When the rotating part (2) rotates, the first connector (4) drives the second connector (6) to rotate through the drive rod (5).

3. A vacuum circuit breaker with a magnetic control unit according to claim 1, characterized in that: The housing (1) is provided with a spring (15), and the rotating part (2) is provided with a fixing bar (212). The spring (15) is set on the fixing bar (212) and the spring (15) is used to drive the rotating part (2) to reset. When the spring (15) is in a state of no force, the rotating part (2) does not abut against the first connecting part (4). When the rotating part (2) abuts against the first connecting part (4), the spring (15) is in a stretched state.

4. A vacuum circuit breaker with a magnetic control unit according to claim 3, characterized in that: The housing (1) is provided with a fixing rod (16), which is located on the moving path of the fixing bar (212). The fixing rod (16) is used to restrict the rotation of the rotating part (2). When the fixing rod (16) abuts against the fixing bar (212), the rotating part (2) abuts against the first connecting part (4).

5. A vacuum circuit breaker with a magnetic control unit according to claim 1, characterized in that: The operating lever (311) is provided with a limiting plate (312). The first connecting member (4) abuts against the limiting plate (312) and the first magnetic control structure (31) on its corresponding sides. The operating lever (311) is provided with a fastener (313). The limiting plate (312) is fixedly connected to the first magnetic control structure (31) by the fastener (313). The limiting plate (312) is used to restrict the first connecting member (4) from disengaging from the first magnetic control structure (31).

6. A vacuum circuit breaker with a magnetic control unit according to claim 1, characterized in that: The first connector (4) includes a first connecting part (41), a second connecting part (42) and a third connecting part (43). The second connecting part (42) is disposed between the first connecting part (41) and the third connecting part (43). The distance from the second connecting part (42) to the first magnetic control structure (31) is less than the distance from the third connecting part (43) to the first magnetic control structure (31). The distance from the third connecting part (43) to the first magnetic control structure (31) is used to enable the first magnetic control structure (31) to open the circuit.

7. A vacuum circuit breaker with a magnetic control unit according to claim 6, characterized in that: The distance from the first connecting part (41) to the first magnetic control structure (31) is greater than the distance from the second connecting part (42) to the first magnetic control structure (31).

8. A vacuum circuit breaker with a magnetic control unit according to claim 7, characterized in that: The second connecting part (42) is provided with a protrusion (421), which abuts against the limiting plate (312).

9. A vacuum circuit breaker with a magnetic control unit according to claim 1, characterized in that: There are two first connectors (4), and the operating lever (311) is located between the two first connectors (4). The housing (1) is provided with a fixing component (12), which is used to fix the two first connectors (4) to each other.

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