Circuit breaker isolating switch of primary and secondary fusion ring main unit

Abstract

The invention relates to the technical field of circuit breaker isolation switch equipment, and discloses a circuit breaker isolation switch of a primary and secondary fusion ring main unit, which comprises a mechanism box body, an installation space is arranged in the mechanism box body, and the top of the mechanism box body is fixedly connected with a plurality of airtight insulators. According to the invention, when the contact piece is arranged and the disconnecting switch part needs to be switched on, the operation switch is firstly rotated reversely, the rotating shaft rotates to drive the connecting contact at one end of the isolating rod at one end of the operation insulator to approach, and the connecting inclined block is arranged to be inclined, so that the collision phenomenon caused by inaccurate alignment of the isolating rod and the connecting contact can be avoided; the isolating rod is aligned and connected with the connecting contact, so that the connecting contact is protected from being damaged due to collision between the connecting contact and one end of the isolating rod on one hand, and the butt joint accuracy of the connecting contact at one end of the isolating rod on the other hand is improved on the other hand.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breaker disconnector equipment, and specifically to a circuit breaker disconnector for a primary-secondary integrated ring main unit box. Background Art

[0002] The circuit breaker disconnector of the primary-secondary integrated ring main unit box has the functions of short-circuit fault and overvoltage protection. Its overcurrent protection function is completed by a magnetic induction coil. Because of its complete maintenance functions, easy maintenance and convenient use, it is widely used in the power supply system.

[0003] The circuit breaker disconnector of the primary-secondary integrated ring main unit box can effectively protect the circuit during use. However, when a fault occurs in the circuit, it is necessary to cut off the power supply of the disconnector. When cutting off the power supply, it is necessary to separately disconnect the primary and secondary switches. Among them, the secondary switch is the disconnector. When the disconnector is opened and closed, it usually needs to complete steps such as alignment and pressing. In the prior art, during the closing process of the disconnector, due to long-term use, the disconnector shakes during rotation, resulting in a phenomenon that the disconnector often collides with the connection contact and causes damage to the contact. Summary of the Invention

[0004] The purpose of the present invention is to provide a circuit breaker disconnector for a primary-secondary integrated ring main unit box to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention is a circuit breaker disconnector for a primary-secondary integrated ring main unit box, including a mechanism box body. The inside of the mechanism box body has an installation space. A plurality of airtight insulators are fixedly connected to the top of the mechanism box body. It also includes: A disconnector part, which is installed on the side wall of the mechanism box body and is used to control and operate the secondary switch of the circuit breaker; and A vacuum switch part, which is installed inside the installation hole part inside the mechanism box body and is used to control the primary switch of the circuit breaker; Among them, the disconnector part is connected to the circuit input end, and the top of the vacuum switch part is connected to the circuit output end. By setting the disconnector part, the connection is made tighter. The disconnector part and the vacuum switch part cooperate to realize the primary switch of the circuit breaker.

[0006] Further, the disconnector part includes: A connector part, which is installed on the side wall of the mechanism box body and is used to connect to an external power supply. The connector part is also used to support the installation of the disconnector part; A switching part, which is installed inside the connector part. The switching part is rotatably installed inside the connector part and is used to adjust the switching state of the connector part; The contact part is installed inside the switching member, and the contact part is used to connect the switching member and the joint part more tightly.

[0007] Furthermore, the joint part includes a support frame fixedly connected to the side wall of the mechanism box body. One end of the support frame far away from the side wall of the mechanism box body is fixedly connected with a connecting rod. Several post insulators are fixedly connected to the top of the connecting rod. One end of the post insulator far away from the connecting rod is fixedly connected with a first connecting head, and a connecting contact is fixedly connected to the top of the first connecting head.

[0008] Furthermore, the switching member includes a current transformer fixedly connected to the side wall of the airtight insulator. A isolating rod is rotatably connected to the side of the current transformer far away from the airtight insulator. A rotating shaft penetrates through the middle of the support frame. One end of the rotating shaft is fixedly connected with an operating brake. Several first crank blocks are fixedly connected to the middle of the rotating shaft. One end of the first crank block far away from the rotating shaft is rotatably connected with an operating insulator. One end of the operating insulator far away from the first crank block is rotatably connected to the middle of the isolating rod.

[0009] Furthermore, the contact part includes a sliding groove opened on the isolating rod. Several connecting inclined blocks are slidably connected inside the sliding groove. The connecting inclined blocks are in close contact with the connecting contact. A first slider is slidably connected to one end of the sliding groove close to the connecting inclined block. One end of the first slider is rotatably connected with a first connecting rod. The other end of the first connecting rod far away from the first slider is rotatably connected to the connecting inclined block.

[0010] Furthermore, the contact part further includes a compression spring fixedly connected to the end of the first slider far away from the first connecting rod. One end of the compression spring far away from the first slider is fixedly connected with a second slider. The second slider is slidably connected inside the sliding groove. One end of the side wall of the operating insulator far away from the first crank block is rotatably connected with a second connecting rod. The other end of the second connecting rod far away from the operating insulator is rotatably connected to the side wall of the second slider.

[0011] Furthermore, the vacuum switch part includes: A switching component, which is installed inside the airtight insulator. The switching component is used to connect the external power supply and is also used for power-off arc extinguishing; A linkage component, which is installed inside the installation space of the mechanism box body. The linkage component moves in cooperation with the switching component; A safety component, which is installed on the side wall of the mechanism box body. The safety component is fixedly connected to one end of the switching member. The safety component is used to support and limit the rotation of the rotating shaft. The safety component cooperates with the linkage component to realize the locking of the vacuum switch part to the disconnector part.

[0012] Furthermore, the switching component includes an opening and closing switch rotatably penetrating through the front side wall of the mechanism box body. A energy storage brake rotatably penetrates through the front side wall of the mechanism box body. An energy storage switch mechanism is fixedly connected inside the mechanism box body. The opening and closing switch and the energy storage brake control the internal mechanism operation of the energy storage switch mechanism; Among them, an arc extinguishing chamber is provided inside the airtight insulator. A second connector is fixedly connected to the top of the airtight insulator. A fixed contact rod is fixedly connected to the top of the arc extinguishing chamber. A sliding contact rod is slidably connected to the bottom of the arc extinguishing chamber. A corrugated pipe is fixedly connected inside the arc extinguishing chamber. Opening and closing the switch is achieved by controlling the energy storage switch mechanism to make the sliding contact rod slide up and down along the arc extinguishing chamber. The energy storage brake is responsible for storing energy inside the energy storage switch mechanism.

[0013] Further, the linkage member includes a fixing plate fixedly connected to the bottom of the sliding contact rod. A plurality of linkage insulators are fixedly connected to the side wall of the fixing plate. A third linkage rod is rotatably connected to the middle of the linkage insulator near one end of the operating brake. One end of the third linkage rod away from the linkage insulator is rotatably connected to a moving plate. A limiting rod is fixedly connected to one end of the moving plate close to the inner wall of the mechanism box. The limiting rod slidably penetrates the side wall of the mechanism box.

[0014] Further, for the safety component, a second crank block is fixedly connected to one end of the rotating shaft close to the operating brake. A limiting rod is rotatably connected to one end of the second crank block away from the rotating shaft. A compression spring is sleeved on one end of the limiting rod away from the second crank block. A limiting column is fixedly connected to the side wall of the mechanism box. One end of the limiting rod away from the second crank block is slidably connected to the limiting column. One end of the limiting rod away from the second crank block is slidably connected to a pressing slider, and the pressing slider and the limiting column...

[0015] The present invention has the following beneficial effects: (1) In the present invention, when setting the contact member, when it is necessary to close the disconnecting switch part, first rotate the operating brake in the reverse direction. The rotation of the rotating shaft drives one end of the isolating rod connected to one end of the operating insulator to approach the connecting contact. At this time, the connecting inclined block is set to be inclined, which is beneficial to avoiding the phenomenon of collision caused by the misalignment between the isolating rod and the connecting contact. By setting the isolating rod to be aligned with the connecting contact, on the one hand, it is beneficial to protect the connecting contact from being damaged by the collision with one end of the isolating rod, and on the other hand, it is beneficial to improve the accuracy of the connection between one end of the isolating rod and the connecting contact.

[0016] (2) When the isolating rod approaches the connecting contact, the included angle between the isolating rod and the operating insulator decreases. At this time, the second linkage rod on the operating insulator drives the slider two to squeeze the compression spring along the sliding groove. The compression spring is squeezed, and the elastic force increases. At this time, the elastic force of the compression spring increases the squeezing force on one end of the slider one by the first linkage rod. The squeezing force of the first linkage rod on the connecting inclined block increases. Such a setting is beneficial to increasing the squeezing force of the two connecting inclined blocks on the connecting contact, thereby improving the connection stability between the connecting contact and the isolating rod.

[0017] (3) In the present invention, when using this circuit breaker disconnector, first install the device inside the ring main unit. When the device is operating normally, the contact end of the sliding contact rod inside the switch element is in conduction with the fixed contact rod. At this time, the connecting rod three inside the linkage member drives the limiting rod at one end of the moving plate to extend outwards from the mechanism box body. At this time, the limiting rod abuts against one end of the limiting rod. Such a setting is beneficial for the limiting rod in the linkage member to lock the switching member, avoiding the disconnection of the device caused by accidental operation through rotating the operating brake, and ensuring the stable and normal operation of this circuit breaker disconnector.

[0018] (4) In the present invention, when the device needs to be repaired, toggle the opening and closing switch. The opening and closing switch drives the mechanism inside the energy storage switch mechanism to operate, driving the sliding contact rod to move downward along the arc extinguishing chamber. At this time, the sliding contact rod disconnects from one end of the fixed contact rod, thus realizing a primary opening; at the same time, the sliding contact rod drives the fixing plate to move downward, driving the connecting rod three to rotate. The rotation of the connecting rod three drives the limiting rod at one end of the moving plate to slide towards the inside of the mechanism box body. At this time, the limiting rod disengages from contact with one end of the limiting rod.

[0019] (5) In the present invention, by setting the switching member, when the vacuum switch part disconnects, manually rotate the operating brake. The rotation of the operating brake drives the operating insulator at one end of the crank block on the rotating shaft to drive the isolating rod to disengage from the joint part. At this time, the secondary opening of this circuit breaker switch is realized, thus ensuring the safety of the maintenance personnel of the device; in addition, when the operating brake rotates, it drives one end of the crank block two at one end of the crank block two to slide along the limiting column. At this time, the pressing slider is squeezed with the pressure spring, and the included angle between the crank block two and the limiting rod gradually increases to 180°. When the operating brake continues to rotate downward, the included angle between the crank block two and the limiting rod is greater than 180°. At this time, under the elastic force of the pressure spring, the torsional force of the reverse rotation of the rotating shaft increases, thus ensuring that when the operating brake is in the open state, it will not easily rebound and close, bringing danger to the maintenance.

[0020] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic top view of the overall front of the present invention; Figure 2 It is a schematic top view of the overall back of the present invention; Figure 3Schematic diagram of the partial cross-section structure of the mechanism box of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of A in Figure 5 Schematic diagram of the partial structure of the disconnector part of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of B in Figure 7 Schematic diagram of the partial structure of the contact member of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of C in Figure 9 Schematic diagram of the partial structure of the fuse member of the present invention.

[0023] In the attached drawings, the list of components represented by each reference numeral is as follows: In the figure: 1, mechanism box; 2, airtight insulator; 3, disconnector part; 31, joint member; 311, support frame; 312, connecting rod; 313, post insulator; 314, connecting head one; 315, connecting contact; 32, switching member; 321, current transformer; 322, isolating rod; 323, rotating shaft; 324, operating switch; 325, crank block one; 326, operating insulator; 33, contact member; 331, sliding groove; 332, connecting inclined block; 333, slider one; 334, connecting rod one; 335, compression spring; 336, slider two; 337, connecting rod two; 4, vacuum switch part; 41, switch member; 411, opening and closing switch; 412, energy storage switch; 413, energy storage switch mechanism; 414, arc extinguishing chamber; 415, connecting head two; 416, fixed contact rod; 417, sliding contact rod; 418, bellows; 42, linkage member; 421, fixing plate; 422, linkage insulator; 423, connecting rod three; 424, moving plate; 425, limiting rod; 43, fuse member; 431, crank block two; 432, limiting rod; 433, pressure spring; 434, limiting post; 435, pressing slider. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Example 1, please refer to Figures 1-8As shown in the figure, the circuit breaker disconnector of the present invention for a primary-secondary integrated ring main unit includes a mechanism box body 1. The interior of the mechanism box body 1 has an installation space. A plurality of airtight insulators 2 are fixedly connected to the top of the mechanism box body 1. It further includes: A disconnector part 3, which is installed on the side wall of the mechanism box body 1 and is used to control and operate the secondary switch of the circuit breaker; and A vacuum switch part 4, which is installed inside the installation hole part inside the mechanism box body 1 and is used to control the primary switch of the circuit breaker; Among them, the disconnector part 3 is connected to the circuit input end, and the top of the vacuum switch part 4 is connected to the circuit output end. By setting the disconnector part 3, the connection is made more compact, and the disconnector part 3 and the vacuum switch part 4 cooperate to realize the primary switch of the circuit breaker.

[0026] The disconnector part 3 includes: A connector part 31, which is installed on the side wall of the mechanism box body 1 and is used to connect to an external power supply. The connector part 31 is also used to support the installation of the disconnector part 3; A switching part 32, which is installed inside the connector part 31 and is rotatably installed inside the connector part 31. The switching part 32 is used to adjust the switching state of the connector part 31; A contact part 33, which is installed inside the switching part 32 and is used to make the connection between the switching part 32 and the connector part 31 more compact.

[0027] The connector part 31 includes a support frame 311 fixedly connected to the side wall of the mechanism box body 1. One end of the support frame 311 away from the side wall of the mechanism box body 1 is fixedly connected to a connecting rod 312. A plurality of post insulators 313 are fixedly connected to the top of the connecting rod 312. One end of the post insulator 313 away from the connecting rod 312 is fixedly connected to a first connection head 314. A connection contact 315 is fixedly connected to the top of the first connection head 314. The function of this component is that by setting the switching part 32, when the vacuum switch part 4 is disconnected, manually rotate the operating switch 324. The rotation of the operating switch 324 drives the operating insulator 326 at one end of the crank block 325 on the rotating shaft 323 to drive the isolation rod 322 to disengage from the connector part 31. At this time, the secondary disconnection of the circuit breaker switch is realized, thus ensuring the safety of the maintenance personnel of the device.

[0028] The switching piece 32 includes a current transformer 321 fixedly connected to the side wall of the airtight insulator 2. A disconnecting link 322 is rotatably connected to the side of the current transformer 321 away from the airtight insulator 2. A rotating shaft 323 rotatably penetrates through the middle of the support frame 311. One end of the rotating shaft 323 is fixedly connected to an operating switch 324. A number of first crank blocks 325 are fixedly connected to the middle of the rotating shaft 323. One end of the first crank block 325 away from the rotating shaft 323 is rotatably connected to an operating insulator 326. One end of the operating insulator 326 away from the first crank block 325 is rotatably connected to the middle of the disconnecting link 322.

[0029] The contact piece 33 includes a sliding groove 331 formed in the disconnecting link 322. A number of connecting inclined blocks 332 are slidably connected inside the sliding groove 331. The connecting inclined blocks 332 are in close contact with the connecting contact 315. A first slider 333 is slidably connected to one end of the sliding groove 331 close to the connecting inclined blocks 332. One end of the first slider 333 is rotatably connected to a first connecting rod 334. One end of the first connecting rod 334 away from the first slider 333 is rotatably connected to the connecting inclined block 332.

[0030] The contact member 33 further includes a compression spring 335 fixedly connected to one end of the first slider 333 away from the first link 334. One end of the compression spring 335 away from the first slider 333 is fixedly connected to a second slider 336. The second slider 336 is slidably connected inside the sliding groove 331. One end side wall of the operating insulator 326 away from the first crank block 325 is rotatably connected to a second link 337. One end of the second link 337 away from the operating insulator 326 is rotatably connected to the side wall of the second slider 336. The function of this component is that when setting the contact member 33, when the disconnecting switch part 3 needs to be closed, first rotate the operating switch 324 in the reverse direction. The rotation of the rotating shaft 323 drives one end of the isolating rod 322 at one end of the operating insulator 326 to approach the connecting contact 315. At this time, the connecting inclined block 332 is set to be inclined, which is beneficial to avoiding the phenomenon of collision caused by the misalignment between the isolating rod 322 and the connecting contact 315. By setting the alignment connection between the isolating rod 322 and the connecting contact 315, on the one hand, it is beneficial to protect the connecting contact 315 from being damaged by the collision with one end of the isolating rod 322, and on the other hand, it is beneficial to improve the alignment accuracy of the connection between one end of the isolating rod 322 and the connecting contact 315; when the isolating rod 322 approaches the connecting contact 315, the included angle between the isolating rod 322 and the operating insulator 326 decreases. At this time, the second link 337 on the operating insulator 326 drives the second slider 336 to squeeze the compression spring 335 along the sliding groove 331. The compression spring 335 is squeezed and the elastic force increases. At this time, the elastic force of the compression spring 335 increases the squeezing force on the first link 334 at one end of the first slider 333, and the squeezing force of the first link 334 on the connecting inclined block 332 increases. Such a setting is beneficial to increasing the squeezing force of the two connecting inclined blocks 332 on the connecting contact 315, thereby improving the connection stability between the connecting contact 315 and the isolating rod 322.

[0031] Embodiment 2, the difference feature from Embodiment 1 is that; as Figures 1-9 shown, the vacuum switch part 4 includes: A switch member 41, the switch member 41 is installed inside the airtight insulator 2. The switch member 41 is used to connect an external power supply and is also used for power-off and arc extinguishing; A linkage member 42, the linkage member 42 is installed inside the installation space of the mechanism box 1. The linkage member 42 moves in cooperation with the switch member 41; A safety member 43, the safety member 43 is installed on the side wall of the mechanism box 1. The safety member 43 is fixedly connected to one end of the switch regulating member 32. The safety member 43 is used to support and limit the rotation of the rotating shaft 323. The safety member 43 cooperates with the linkage member 42 to lock the vacuum switch part 4 to the disconnecting switch part 3.

[0032] The switch member 41 includes a switching-on and -off member 411 that rotates through the front side wall of the mechanism housing 1. A energy storage switch 412 rotates through the front side wall of the mechanism housing 1. An energy storage switch mechanism 413 is fixedly connected inside the mechanism housing 1. The switching-on and -off member 411 and the energy storage switch 412 control the operation of the internal mechanism of the energy storage switch mechanism 413. Among them, an arc extinguishing chamber 414 is provided inside the airtight insulator 2. A second connecting head 415 is fixedly connected to the top of the airtight insulator 2. A fixed contact rod 416 is fixedly connected to the top of the arc extinguishing chamber 414. A sliding contact rod 417 is slidably connected to the bottom of the arc extinguishing chamber 414. A corrugated pipe 418 is fixedly connected inside the arc extinguishing chamber 414. The switching-on and -off member 411 controls the energy storage switch mechanism 413 to enable the sliding contact rod 417 to slide up and down along the arc extinguishing chamber 414. The energy storage switch 412 is responsible for storing energy inside the energy storage switch mechanism 413.

[0033] The linkage member 42 includes a fixing plate 421 fixedly connected to the bottom of the sliding contact rod 417. A number of linkage insulators 422 are fixedly connected to the side wall of the fixing plate 421. A third link 423 is rotatably connected to the middle of the linkage insulator 422 near one end of the operating switch 324. One end of the third link 423 away from the linkage insulator 422 is rotatably connected to a moving plate 424. A limiting rod 425 is fixedly connected to one end of the moving plate 424 close to the inner wall of the mechanism housing 1. The limiting rod 425 slidably penetrates the side wall of the mechanism housing 1. The function of this component is that when the device needs to be repaired, the switching-on and -off member 411 is toggled. The switching-on and -off member 411 drives the operation of the internal mechanism of the energy storage switch mechanism 413 to drive the sliding contact rod 417 to move downward along the arc extinguishing chamber 414. At this time, one end of the sliding contact rod 417 is disconnected from the fixed contact rod 416, thus realizing a single disconnection; at the same time, the sliding contact rod 417 drives the fixing plate 421 to move downward to drive the third link 423 to rotate. The rotation of the third link 423 drives the limiting rod 425 at one end of the moving plate 424 to slide into the interior of the mechanism housing 1. At this time, the limiting rod 425 is disengaged from contact with one end of the limiting rod 432.

[0034] The insurance part 43, at one end of the rotating shaft 323 close to the operating brake 324, is fixedly connected with a second crank block 431. At one end of the second crank block 431 away from the rotating shaft 323, a limiting rod 432 is rotatably connected. At one end of the limiting rod 432 away from the second crank block 431, a compression spring 433 is sleeved. A limiting post 434 is fixedly connected to the side wall of the mechanism box body 1. At one end of the limiting rod 432 away from the second crank block 431, it is slidably connected with the limiting post 434. At one end of the limiting rod 432 away from the second crank block 431, a pressing slider 435 is slidably connected. The pressing slider 435 and the limiting post 434. The function of this component is that when the operating brake 324 rotates, it drives one end of the second crank block 431 at one end of the second crank block 431 to slide along the limiting post 434. At this time, the pressing slider 435 and the compression spring 433 are squeezed. The included angle between the second crank block 431 and the limiting rod 432 gradually increases to 180°. When the operating brake 324 continues to rotate downward, the included angle between the second crank block 431 and the limiting rod 432 is greater than 180°. At this time, under the elastic force of the compression spring 433, the torsional force for the reverse rotation of the rotating shaft 323 increases, so as to ensure that when the operating brake 324 is in the open state, it will not easily close due to rebound, bringing danger to maintenance; when using this circuit breaker disconnector, first install this device inside the ring main unit. When this device works normally, the contact end of the sliding contact rod 417 inside the switch part 41 is conducted with the fixed contact rod 416. At this time, the connecting rod three 423 inside the linkage part 42 drives the limiting rod 425 at one end of the moving plate 424 to extend out of the mechanism box body 1. At this time, the limiting rod 425 abuts against one end of the limiting rod 432. Such a setting is beneficial for the limiting rod 425 in the linkage part 42 to lock the switching piece 32, avoiding the disconnection of this device caused by accidentally rotating the operating brake 324, and ensuring the stable and normal operation of this circuit breaker disconnector.

[0035] A specific application of this embodiment is: When using this circuit breaker disconnector, first install the device inside the ring main unit. When the device is working properly, the sliding contact rod 417 inside the switch member 41 is in conduction with the contact end of the fixed contact rod 416. At this time, the connecting rod three 423 inside the linkage member 42 drives the limiting rod 425 at one end of the moving plate 424 to extend out of the mechanism box body 1. At this time, the limiting rod 425 abuts against one end of the limiting rod 432. This setting is beneficial for the limiting rod 425 in the linkage member 42 to lock the switching member 32, avoiding the disconnection of the device caused by accidentally rotating the operating brake 324, and ensuring the stable and normal operation of this circuit breaker disconnector; when the device needs to be repaired, toggle the opening and closing switch 411. The opening and closing switch 411 drives the mechanism inside the energy storage switch mechanism 413 to operate, driving the sliding contact rod 417 to move downward along the arc extinguishing chamber 414. At this time, the sliding contact rod 417 is disconnected from one end of the fixed contact rod 416, thus realizing a single opening; at the same time, the sliding contact rod 417 drives the fixed plate 421 to move downward, driving the connecting rod three 423 to rotate. The connecting rod three 423 rotates to drive the limiting rod 425 at one end of the moving plate 424 to slide inside the mechanism box body 1. At this time, the limiting rod 425 is disengaged from contact with one end of the limiting rod 432; By setting the switching-off member 32, when the vacuum switch unit 4 is disconnected, manually rotate the operating brake 324. The rotation of the operating brake 324 drives the operating insulator 326 at one end of the crank block 325 on the rotating shaft 323 to drive the isolating rod 322 to disengage from the joint member 31. At this time, the secondary switching-off of the circuit breaker switch is achieved, thus ensuring the safety of the maintenance personnel of the device. In addition, when the operating brake 324 rotates, it drives one end of the crank block 431 to slide along the limit post 434. At this time, the pressing slider 435 and the pressure spring 433 are squeezed, and the included angle between the crank block 431 and the limiting rod 432 gradually increases to 180°. When the operating brake 324 continues to rotate downward, the included angle between the crank block 431 and the limiting rod 432 is greater than 180°. At this time, under the elastic force of the pressure spring 433, the torsional force of the reverse rotation of the rotating shaft 323 increases, so as to ensure that when the operating brake 324 is in the open state, it will not easily rebound and close, bringing danger to the maintenance. By setting the contact member 33, when the disconnecting switch unit 3 needs to be closed, first rotate the operating brake 324 in the reverse direction. The rotation of the rotating shaft 323 drives one end of the isolating rod 322 at one end of the operating insulator 326 to approach the connecting contact 315. At this time, the connecting inclined block 332 is set to be inclined, which is beneficial to avoiding the collision phenomenon caused by the misalignment of the isolating rod 322 and the connecting contact 315. By setting the isolating rod 322 and the connecting contact 315 to be aligned and connected, on the one hand, it is beneficial to protect the connecting contact 315 from being damaged by the collision with one end of the isolating rod 322, and on the other hand, it is beneficial to improve the alignment accuracy of the connection between one end of the isolating rod 322 and the connecting contact 315. When the isolating rod 322 approaches the connecting contact 315, the included angle between the isolating rod 322 and the operating insulator 326 decreases. At this time, the connecting rod 337 on the operating insulator 326 drives the slider 336 along the sliding groove 331 to squeeze the compression spring 335. The compression spring 335 is squeezed and the elastic force increases. At this time, the elastic force of the compression spring 335 increases the squeezing force on the connecting rod 334 at one end of the slider 333, and the squeezing force of the connecting rod 334 on the connecting inclined block 332 increases. Such a setting is beneficial to increasing the squeezing force of the two connecting inclined blocks 332 on the connecting contact 315, thereby improving the connection stability between the connecting contact 315 and the isolating rod 322.

[0036] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. The circuit breaker disconnector of the primary-secondary integrated ring main unit box includes a mechanism box body. The inside of the mechanism box body has an installation space. A plurality of airtight insulators are fixedly connected to the top of the mechanism box body. It is characterized in that, It further includes: An isolating switch part, which is installed on the side wall of the mechanism box body and is used to control and operate the secondary switch of the circuit breaker; And A vacuum switch part, which is installed inside the mounting hole part inside the mechanism box body and is used to control the primary switch of the circuit breaker; Wherein, the isolating switch part is connected to the circuit input end, and the top of the vacuum switch part is connected to the circuit output end. By setting the isolating switch part, the connection is made tighter, and the isolating switch part and the vacuum switch part cooperate to realize the primary switch of the circuit breaker.

2. The circuit breaker disconnector of the primary-secondary integrated ring main unit according to claim 1, characterized in that: The isolating switch part includes: A connector part, which is installed on the side wall of the mechanism box body, is used to connect an external power supply, and is also used to support the installation of the isolating switch part; A switching part, which is installed inside the connector part, is rotatably installed inside the connector part, and is used to adjust the switching state of the connector part; A contact part, which is installed inside the switching part and is used to make the connection between the switching part and the connector part tighter.

3. The circuit breaker disconnector of the primary-secondary integrated ring main unit according to claim 2, characterized in that: The connector part includes a support frame fixedly connected to the side wall of the mechanism box body. One end of the support frame away from the side wall of the mechanism box body is fixedly connected with a connecting rod. The top of the connecting rod is fixedly connected with a plurality of post insulators. One end of the post insulator away from the connecting rod is fixedly connected with a first connection head, and the top of the first connection head is fixedly connected with a connection contact.

4. The circuit breaker disconnector of the primary-secondary integrated ring main unit according to claim 3, characterized in that: The switching part includes a current transformer fixedly connected to the side wall of the airtight insulator. One side of the current transformer away from the airtight insulator is rotatably connected with an isolating rod. A rotating shaft penetrates through the middle of the support frame. One end of the rotating shaft is fixedly connected with an operating switch. A plurality of first crank blocks are fixedly connected to the middle of the rotating shaft. One end of the first crank block away from the rotating shaft is rotatably connected with an operating insulator. One end of the operating insulator away from the first crank block is rotatably connected with the middle of the isolating rod.

5. The circuit breaker disconnector of the primary-secondary integrated ring main unit according to claim 4, characterized in that: The contact part includes a sliding groove opened on the isolating rod. A plurality of connecting inclined blocks are slidably connected inside the sliding groove. The connecting inclined blocks are in close contact with the connection contact. One end of the sliding groove close to the connecting inclined block is slidably connected with a first slider. One end of the first slider is rotatably connected with a first connecting rod. The other end of the first connecting rod away from the first slider is rotatably connected with the connecting inclined block.

6. The circuit breaker disconnector of the primary-secondary integrated ring main unit according to claim 5, characterized in that: The contact part further includes a compression spring fixedly connected to the end of the first slider away from the first connecting rod. One end of the compression spring away from the first slider is fixedly connected with a second slider. The second slider is slidably connected inside the sliding groove. One side wall of the end of the operating insulator away from the first crank block is rotatably connected with a second connecting rod. The other end of the second connecting rod away from the operating insulator is rotatably connected with the side wall of the second slider.

7. The circuit breaker disconnector of the primary-secondary integrated ring main unit according to claim 6, characterized in that: The vacuum switch part includes: A switch part, which is installed inside the airtight insulator, is used to connect an external power supply, and is also used for power-off arc extinguishing; A linkage part, which is installed inside the installation space of the mechanism box body and cooperates with the switch part to move; The safety component is installed on the side wall of the mechanism box body. One end of the safety component is fixedly connected to the brake adjusting component. The safety component is used to support and restrict the rotation of the rotating shaft, and cooperates with the linkage component to lock the disconnector part by the vacuum switch part.

8. The circuit breaker disconnector of the primary-secondary integrated ring main unit according to claim 7, characterized in that: The switch component includes the opening and closing switch that rotates through the front side wall of the mechanism box body. The energy storage brake rotates through the front side wall of the mechanism box body. The energy storage switch mechanism is fixedly connected inside the mechanism box body. The opening and closing switch and the energy storage brake control the internal mechanism operation of the energy storage switch mechanism. Among them, an arc extinguishing chamber is provided inside the airtight insulator. A second connecting head is fixedly connected to the top of the airtight insulator. A fixed contact rod is fixedly connected to the top of the arc extinguishing chamber. A sliding contact rod is slidably connected to the bottom of the arc extinguishing chamber. A corrugated pipe is fixedly connected inside the arc extinguishing chamber. The opening and closing switch controls the sliding contact rod to slide up and down along the arc extinguishing chamber by controlling the energy storage switch mechanism, and the energy storage brake is responsible for energy storage inside the energy storage switch mechanism.

9. The circuit breaker-disconnector of the primary-secondary integrated ring main unit according to claim 8, characterized in that: The linkage component includes a fixing plate fixedly connected to the bottom of the sliding contact rod. A plurality of linkage insulators are fixedly connected to the side wall of the fixing plate. A third linkage rod is rotatably connected to the middle of the linkage insulator near one end of the operating brake. The end of the third linkage rod away from the linkage insulator is rotatably connected to a moving plate. A limiting rod is fixedly connected to one end of the moving plate close to the inner wall of the mechanism box body. The limiting rod slidably penetrates the side wall of the mechanism box body.

10. The circuit breaker disconnector of the primary-secondary integrated ring main unit according to claim 9, characterized in that: For the safety component, a second crank block is fixedly connected to one end of the rotating shaft close to the operating brake. A limiting rod is rotatably connected to the end of the second crank block away from the rotating shaft. A pressure spring is sleeved on the end of the limiting rod away from the second crank block. A limiting column is fixedly connected to the side wall of the mechanism box body. The end of the limiting rod away from the second crank block is slidably connected to the limiting column. A pressing slider is slidably connected to the end of the limiting rod away from the second crank block. The pressing slider and the limiting column.

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