Split type permanent magnet circuit breaker structure

Abstract

A split type permanent magnet circuit breaker structure comprises a circuit breaker body and a permanent magnet driving mechanism, the circuit breaker body comprises an insulating shell, a first connecting part and a second connecting part, and the first connecting part and the second connecting part are arranged in the insulating shell and penetrate out of the top and the side face of the insulating shell respectively. The first connecting part comprises a first contact and a second contact, and the first contact penetrates through the top of the insulating shell and is connected with the second contact; and the permanent magnet driving mechanism is arranged at the bottom of the insulating shell and is detachably connected with the second plug through the second connecting part. Detachable connection is achieved through the first connecting part and the second connecting part. When the permanent magnet driving mechanism goes wrong, large-scale disassembly of the whole circuit breaker is not needed, and local operation can be directly carried out. In addition, the detachable plugging design of the plug and the jack in the second connecting part satisfies the insulation requirement, realizes the function of convenient dismounting, and is easy to implement and maintain.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical control equipment, and in particular to a split type permanent magnetic circuit breaker structure. Background Art

[0002] In a circuit breaker for high-voltage opening and closing control, in order to achieve low-energy rapid triggering of the opening action, a permanent magnet drive mechanism with a permanent magnet and a control coil drive is usually used to drive and control the circuit breaker. This type of circuit breaker is called a permanent magnet circuit breaker. At present, in a permanent magnet circuit breaker, the driving rod of the permanent magnet drive mechanism needs to be fixedly connected to the moving contact arranged in the insulating housing of the circuit breaker, so as to realize the driving of the moving contact by the permanent magnet drive mechanism and realize the opening and closing action. Since the connection between the driving rod of the permanent magnet drive mechanism and the moving contact is located in the insulating housing, when the permanent magnet drive mechanism fails and needs to be repaired or replaced, the circuit breaker needs to be removed from the circuit and the entire circuit breaker needs to be disassembled to realize the disassembly and replacement of the permanent magnet drive mechanism, which affects the maintenance efficiency of the permanent magnet circuit breaker. However, the requirements for insulation performance in the circuit breaker are relatively strict, so it is difficult to make a structure that is easy to disassemble. Summary of the invention

[0003] The object of the present invention is to provide a split type permanent magnetic circuit breaker structure which can quickly disassemble a permanent magnetic drive mechanism from the permanent magnetic circuit breaker.

[0004] To achieve the above object, the present invention provides a split permanent magnetic circuit breaker structure, including a circuit breaker body and a permanent magnetic drive mechanism, wherein the circuit breaker body includes an insulating shell, a first connecting component and a second connecting component, wherein the first connecting component and the second connecting component are arranged in the insulating shell and pass through the top and side of the insulating shell respectively. The first connecting component includes a first contact and a second contact, the first contact passes through the top of the insulating housing and is fixed, and the first contact is connected to the second contact; The permanent magnetic drive mechanism is arranged at the bottom of the insulating shell, and the permanent magnetic drive mechanism includes a drive rod; The second connecting component includes a plug-in pull rod, a soft connecting wire and a female plug connecting block, one end of the plug-in pull rod is connected to the driving rod, one end of the female plug connecting block is provided with a connecting end, the connecting end is connected to the second contact and slides up and down, the other end of the female plug connecting block is provided with a socket, the other end of the plug-in pull rod is provided with a plug corresponding to the socket, the plug and the socket are detachable and plugged, one end of the soft connecting wire is connected to the second contact, and the other end passes through the side of the insulating shell.

[0005] Preferably, the socket comprises a vertical sliding groove and a horizontal rotation groove, the vertical sliding groove is located below the female plug connection block, the horizontal rotation groove is arranged at a diagonal position below the female plug connection block, and the horizontal rotation groove is connected to the vertical sliding groove; The plug includes a plug-in connection block, and the plug-in connection block corresponds to the shape of the vertical sliding groove.

[0006] Preferably, the socket further comprises a positioning groove, and the positioning groove is arranged at the bottom center of the vertical sliding groove; The plug further comprises a positioning protrusion, which is arranged above the plug-in connection block and connected to the positioning groove.

[0007] Preferably, the inner groove surface of the vertical sliding groove is provided with a plurality of air grooves.

[0008] Preferably, a threaded hole is provided on a side of the second contact away from the first contact, the connecting end is provided with an external thread, and the connecting end is threadedly engaged with the second contact. The flexible connection outlet wire passes through the connection terminal, and the flexible connection outlet wire is located between the second contact and the female plug connection block.

[0009] Preferably, the plug-in pull rod includes an insulating rod, a female plug rod, an adjusting connection cover and an adjusting spring. The insulating rod is provided with an adjusting cavity. The adjusting spring is arranged in the adjusting cavity. The adjusting connection cover is threadedly connected to the adjusting cavity. The female plug rod is provided with the plug at one end and an adjusting convex ring at the other end. The end of the female plug rod provided with the adjusting convex ring extends into the adjusting cavity, and the adjusting convex ring is located between the adjusting spring and the adjusting connection cover.

[0010] Preferably, a plurality of anti-rotation arc strips are provided on the wall surface where the adjusting convex ring contacts the adjusting cavity, and the side where the anti-rotation arc strip contacts the wall surface is an arc surface.

[0011] Preferably, the permanent magnet drive mechanism also includes a permanent magnet structure body, a locking piece and a limit plate. The permanent magnet structure body is fixed under the circuit breaker body, the drive rod passes through the permanent magnet structure body, one end of the drive rod is threadedly connected to the plug-in pull rod, the locking piece is meshedly connected to the drive rod and abuts against the plug-in pull rod, and a notch is provided at one end of the drive rod away from the plug-in pull rod, and the limit plate passes through the notch and is connected to the permanent magnet structure body. Beneficial effects of the present invention: The present invention realizes detachable connection through the first connecting part and the second connecting part. When a problem occurs in the permanent magnetic drive mechanism, there is no need to disassemble the entire circuit breaker on a large scale, and the operation can be directly performed locally, which greatly reduces the time required for maintenance and improves the maintenance efficiency. In addition, the detachable plug-in design of the plug and the socket in the second connecting part realizes the function of convenient disassembly while meeting the insulation requirements, which is convenient for daily maintenance inspection and easy to implement and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0013] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention.

[0014] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0015] Figure 3 It is a structural schematic diagram of a female plug connection block.

[0016] Figure 4 yes Figure 1 Enlarged view of point B in the middle.

[0017] Figure 5 It is a structural schematic diagram of a female plug rod.

[0018] Figure 6 It is a connection diagram of the limit plate and the driving rod.

[0019] In the figure: permanent magnet drive mechanism 1; drive rod 11; notch 111; permanent magnet structure body 12; locking piece 13; limit plate 14; circuit breaker body 2; insulating shell 20; first connecting part 21; first contact 211; second contact 212; second connecting part 22; plug-in pull rod 221; insulating rod 2211; female plug rod 2212; plug 2212a; plug connection block 2212b; positioning protrusion 2212c; adjusting protruding ring 2212d; anti-rotation arc strip 2212e; adjusting connection cover 2213; adjusting spring 2214; soft connection outlet 222; female plug connection block 223; connection end 2231; socket 2232; vertical sliding groove 2232a; horizontal rotation groove 2232b; positioning groove 2232c. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0021] like Figure 1 As shown, a split permanent magnetic circuit breaker structure includes a circuit breaker body 2 and a permanent magnetic drive mechanism 1, the circuit breaker body 2 includes an insulating shell 20, a first connecting component 21 and a second connecting component 22, the first connecting component 21 and the second connecting component 22 are arranged in the insulating shell 20 and pass through the top and side of the insulating shell 20 respectively, the first connecting component 21 includes a first contact 211 and a second contact 212, the first contact 211 passes through the top of the insulating shell and is fixed, and the first contact is connected to the second contact; the permanent magnetic drive mechanism 1 is arranged at the bottom of the insulating shell 20, and the permanent magnetic drive mechanism 1 includes a drive rod 11; the first connecting component 211 and the second connecting component 22 are arranged in the insulating shell 20 and pass through the top and side of the insulating shell 20 respectively, and the first connecting component 21 includes a first contact 211 and a second contact 212. The first contact 211 passes through the top of the insulating shell and is fixed, and the first contact is connected to the second contact; the permanent magnetic drive mechanism 1 is arranged at the bottom of the insulating shell 20, and the permanent magnetic drive mechanism 1 includes a drive rod 11; The second connection component 22 includes a plug-in pull rod 221, a soft connection outlet 222 and a female plug connection block 223. One end of the plug-in pull rod 221 is connected to the drive rod 11. One end of the female plug connection block 223 is provided with a connection terminal 2231, which is connected to the second contact 212 and slides up and down. The other end of the female plug connection block 223 is provided with a socket 2232. The other end of the plug-in pull rod 221 is provided with a plug 2212a corresponding to the socket 2232. The plug 2212a and the socket 2232 are detachably plugged. One end of the soft connection outlet 222 is connected to the second contact 212, and the other end passes through the side of the insulating housing 20. In a traditional permanent magnetic circuit breaker, when the permanent magnetic drive mechanism 1 fails, the circuit breaker needs to be removed from the circuit and the entire circuit breaker needs to be disassembled to repair or replace the permanent magnetic drive mechanism 1. The present invention realizes a detachable connection through the first connection component 21 and the second connection component 22. When a problem occurs in the permanent magnetic drive mechanism 1, there is no need to disassemble the entire circuit breaker on a large scale, and the operation can be performed directly on a local part, which greatly reduces the time required for maintenance and improves the maintenance efficiency. In addition, the detachable plug-in design of the plug 2212a and the socket 2232 in the second connecting component 22 not only meets the insulation requirements, but also realizes the function of convenient disassembly, facilitates daily maintenance inspection, and is easy to implement and maintain.

[0022] In this embodiment, the insulating housing 20 is used to fix the first connecting member 21 and the second connecting member 22. The first connecting member 21 is provided with a first contact 211 and a second contact 212, and the opening and closing of the circuit breaker is controlled by the abutment or separation of the first contact 211 and the second contact 212. Among them, the end of the first contact 211 exposed from the top of the insulating housing 20 is a terminal and is connected to the external high-voltage circuit, and the insulating housing 20 and the insulating rod 2211 play a good isolation role to prevent the second connecting member 22 and the permanent magnetic drive mechanism 1 from being broken down or damaged by the high-voltage current. In this structure, the first contact 211 is a fixed contact, which is fixedly connected to the upper end of the insulating housing 20; and the second contact 212 is a movable contact, which moves up and down at the lower end of the insulating housing 20. The permanent magnetic drive mechanism 1 is connected to the second contact 212 through the second connecting member 22 and drives it to slide up and down to realize opening and closing. Specifically, the driving rod 11 of the permanent magnet driving structure is connected to the plug-in rod 221, the plug-in rod 221 and the female connecting block are detachably connected, and the female connecting block 223 is connected to the second contact 212. Through a multi-stage connection method, the plug-in rod 221 and the female connecting block 223 can be separated without dismantling the entire circuit breaker, thereby achieving the effect of convenient disassembly.

[0023] Further, such as Figure 2 , Figure 3 As shown, the socket 2232 includes a vertical sliding groove 2232a and a horizontal rotation groove 2232b, the vertical sliding groove 2232a is located below the female plug connection block 223, the horizontal rotation groove 2232b is arranged at a diagonal position below the female plug connection block 223, and the horizontal rotation groove 2232b is connected to the vertical sliding groove 2232a; the plug 2212a includes a plug connection block 2212b, and the plug connection block 2212b corresponds to the shape of the vertical sliding groove 2232a. The plug 2212a of the present invention moves upward through the vertical sliding groove 2232a until the top of the plug 2212a abuts against the bottom of the vertical sliding groove 2232a. At this time, the plug connection block 2212b is in the rotation space range of the horizontal rotation groove 2232b, and the diagonal distribution can limit the rotation angle of the plug connection block 2212b, even if its rotation angle is fixed to 90°. Therefore, when the plug-in pull rod 221 is driven to rotate, the two ends of the plug-in connection block 2212b will rotate into the horizontal rotation groove 2232b, and the two ends of the plug-in connection block 2212b will be restricted by the groove wall and play a role of abutment, thereby achieving a tight clamping connection between the plug-in connection block 2212b and the female plug-in connection block 223.

[0024] In one embodiment, the socket 2232 further includes a positioning groove 2232c, which is disposed at the bottom center of the vertical sliding groove 2232a; the plug 2212a further includes a positioning protrusion 2212c, which is connected to the positioning groove 2232c. When the plug-in pull rod 221 drives the plug-in connection block 2212b to move upward in the vertical sliding groove 2232a, the positioning protrusion 2212c can play a role in positioning and guiding, reducing the contact surface between the plug-in connection block 2212b and the vertical sliding groove 2232a, reducing friction, and reducing the difficulty of rotation.

[0025] In one embodiment, the inner groove surface of the vertical sliding groove 2232a is provided with a plurality of air grooves. When the plug-in connection block 2212b slides in the vertical sliding groove 2232a, the friction force on both end surfaces is relatively large, and by providing the air grooves, the contact area of ​​the two end surfaces can be effectively optimized, air flow can be achieved, and sliding can be smoother.

[0026] Furthermore, a threaded hole is provided on one side of the second contact 212 away from the first contact 211, and an external thread is provided on the connecting terminal 2231. The connecting terminal 2231 is threadedly engaged with the second contact 212, and the flexible connecting wire 222 passes through the connecting terminal 2231, and the flexible connecting wire 222 is located between the second contact 212 and the female plug connecting block 223. The flexible connecting wire 222 is an integrated structure, one end of which is a soft pressing piece formed by pressing a plurality of copper sheets, and is located between the second contact 212 and the female plug connecting block 223. It is fixed by the meshing pressure between the second contact 212 and the female plug connecting block 223, which is stable, convenient, and detachable. The other end passes through the side of the insulating housing 20 and is connected to the outlet terminal for power output.

[0027] Furthermore, Figure 1 , Figure 4As shown, the plug-in pull rod 221 includes an insulating rod 2211, a female plug rod 2212, an adjustment connection cover 2213 and an adjustment spring 2214. The insulating rod 2211 is provided with an adjustment cavity, the adjustment spring 2214 is arranged in the adjustment cavity, the adjustment connection cover 2213 is threadedly connected with the adjustment cavity, one end of the female plug rod 2212 is provided with a plug 2212a, and the other end is provided with an adjustment convex ring 2212d. One end of the female plug rod 2212 provided with the adjustment convex ring 2212d extends into the adjustment cavity, and the adjustment convex ring 2212d is located between the adjustment spring 2214 and the adjustment connection cover 2213. Through the insulating rod 2211, the permanent magnet drive mechanism 1 can be insulated and protected to prevent the high voltage current from damaging the permanent magnet structure. The adjusting connection cover 2213 is provided with an external thread, which is meshed with the internal thread in the adjusting cavity. Since the adjusting connection cover 2213 is abutted against the adjusting convex ring 2212d, the length of the female plug rod 2212 can be adjusted by changing the position of the adjusting connection cover 2213 according to actual needs, and the female plug rod 2212 is supported by the adjusting spring 2214 to ensure that the arc extinguishing chamber contacts have sufficient contact pressure when opening and closing the circuit breaker.

[0028] In one embodiment, Figure 5 As shown, a plurality of anti-rotation arc strips 2212e are provided on the wall surface where the adjusting protruding ring 2212d contacts the adjusting cavity, and the side where the anti-rotation arc strip 2212e contacts the wall surface is an arc surface. Since the circuit breaker is subjected to increased impact vibration when opening and closing, by providing a plurality of anti-rotation arc strips 2212e, the friction between the adjusting protruding ring 2212d and the adjusting cavity can be increased to prevent displacement and rotation in actual operation, thereby causing the plug-in pull rod 221 and the female plug connection block 223 to be accidentally separated.

[0029] In one embodiment, the anti-rotation arc strip 2212e can be made of silicone material and can be fixed by adhering to the adjusting protruding ring 2212d. The silicone material can effectively increase the friction force and avoid affecting the position adjustment of the adjusting protruding ring 2212d.

[0030] Further, such as Figure 1 , Figure 6As shown, the permanent magnetic drive mechanism 1 also includes a permanent magnetic structure body 12, a locking member 13 and a limiting plate 14. The permanent magnetic structure body 12 is fixed below the circuit breaker body 2. The drive rod 11 passes through the permanent magnetic structure body 12. One end of the drive rod 11 is threadedly connected to the plug-in pull rod 221. The locking member 13 is meshed and connected to the drive rod 11 and abuts against the plug-in pull rod 221. The end of the drive rod 11 away from the plug-in pull rod 221 is provided with a notch 111. The limiting plate 14 passes through the notch 111 and is connected to the permanent magnetic structure body 12. The limiting plate 14 can fix the drive rod 11 to prevent the drive rod 11 from rotating during the opening and closing process, further enhancing the stability and reliability of the device. The locking member 13 is a nut, which can effectively firmly connect the drive rod 11 to the insulating rod 2211 and realize the detachable function.

[0031] When the permanent magnetic drive mechanism 1 of the circuit breaker needs to be disassembled, it is only necessary to separate the limit plate 14 from the drive rod 11, and rotate the drive rod 11 to drive the plug-in pull rod 221 to rotate, and then rotate the plug-in connection block 2212b back into the vertical sliding groove 2232a, and then pull the drive rod 11 downward to separate it from the female plug-in connection block 223, so that the permanent magnetic drive structure can be replaced or maintained without disassembling the entire circuit breaker, which is convenient and quick. The opposite operation can achieve installation and fixation. What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A split permanent magnetic circuit breaker structure, characterized in that: The invention comprises a circuit breaker body and a permanent magnet drive mechanism, wherein the circuit breaker body comprises an insulating shell, a first connecting component and a second connecting component, wherein the first connecting component and the second connecting component are arranged in the insulating shell and pass through the top and the side of the insulating shell respectively. The first connecting component includes a first contact and a second contact, the first contact passes through the top of the insulating housing and is fixed, and the first contact is connected to the second contact; The permanent magnetic drive mechanism is arranged at the bottom of the insulating shell, and the permanent magnetic drive mechanism includes a drive rod; The second connecting component includes a plug-in pull rod, a soft connecting wire and a female plug connecting block, one end of the plug-in pull rod is connected to the driving rod, one end of the female plug connecting block is provided with a connecting end, the connecting end is connected to the second contact and slides up and down, the other end of the female plug connecting block is provided with a socket, the other end of the plug-in pull rod is provided with a plug corresponding to the socket, the plug and the socket are detachable and plugged, one end of the soft connecting wire is connected to the second contact, and the other end passes through the side of the insulating shell.

2. A split type permanent magnetic circuit breaker structure as claimed in claim 1, characterized in that: The socket includes a vertical sliding groove and a horizontal rotation groove, the vertical sliding groove is located below the female plug connection block, the horizontal rotation groove is arranged at a diagonal position below the female plug connection block, and the horizontal rotation groove is connected to the vertical sliding groove; The plug includes a plug-in connection block, and the plug-in connection block corresponds to the shape of the vertical sliding groove.

3. A split type permanent magnetic circuit breaker structure as claimed in claim 2, characterized in that: The socket further comprises a positioning groove, and the positioning groove is arranged at the bottom center of the vertical sliding groove; The plug further comprises a positioning protrusion, which is arranged above the plug-in connection block and connected to the positioning groove.

4. A split type permanent magnetic circuit breaker structure as claimed in claim 3, characterized in that: The inner groove surface of the vertical sliding groove is provided with a plurality of air grooves.

5. A split type permanent magnetic circuit breaker structure as claimed in claim 1, characterized in that: A threaded hole is provided on a side of the second contact away from the first contact, and the connecting end is provided with an external thread, and the connecting end is threadedly engaged with the second contact. The flexible connection outlet wire passes through the connection terminal, and the flexible connection outlet wire is located between the second contact and the female plug connection block.

6. A split type permanent magnetic circuit breaker structure as claimed in claim 1, characterized in that: The plug-in pull rod includes an insulating rod, a female plug rod, an adjusting connection cover and an adjusting spring. The insulating rod is provided with an adjusting cavity. The adjusting spring is arranged in the adjusting cavity. The adjusting connection cover is threadedly connected to the adjusting cavity. The female plug rod is provided with the plug at one end and an adjusting convex ring at the other end. The end of the female plug rod provided with the adjusting convex ring extends into the adjusting cavity, and the adjusting convex ring is located between the adjusting spring and the adjusting connection cover.

7. A split type permanent magnetic circuit breaker structure as claimed in claim 6, characterized in that: A plurality of anti-rotation arc strips are arranged on the wall surface where the adjusting convex ring contacts the adjusting cavity, and a side where the anti-rotation arc strip contacts the wall surface is an arc surface.

8. A split type permanent magnetic circuit breaker structure as claimed in claim 1, characterized in that: The permanent magnet drive mechanism also includes a permanent magnet structure body, a locking piece and a limit plate. The permanent magnet structure body is fixed under the circuit breaker body, the drive rod passes through the permanent magnet structure body, one end of the drive rod is threadedly connected to the plug-in pull rod, the locking piece is meshedly connected to the drive rod and abuts against the plug-in pull rod, a notch is provided at one end of the drive rod away from the plug-in pull rod, and the limit plate passes through the notch and is connected to the permanent magnet structure body.

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