Primary and secondary fusion high-voltage pole-mounted circuit breaker

Abstract

The utility model discloses a primary and secondary fusion high-voltage pole-mounted circuit breaker, which belongs to the technical field of circuit breakers, and is characterized in that a primary and secondary fusion assembly is mounted at the top of a fixing frame, a plurality of vacuum circuit breakers are mounted at the top of the primary and secondary fusion assembly, and a connecting rod assembly is mounted at the top of the fixing frame; a pull rod assembly is installed at the top of the installation plate and used for driving a connecting rod assembly, the pull rod assembly is installed at the operation end of the connecting rod assembly, two sliding blocks are fixed to the outer end of a movable pull rod, and a limiting groove is formed in a limiting block on the installation frame and used for limiting the sliding block on the movable pull rod. When the switch is switched on, the movable pull rod needs to be pulled upwards to enable the sliding block to be separated from the limiting groove, and then the movable pull rod can be rotated to drive the connecting rod assembly to switch on, so that switch-on caused by mistaken touch of workers can be prevented, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, and more specifically to a primary-secondary fusion high-voltage column-mounted circuit breaker. Background Art

[0002] The primary and secondary integrated pole-mounted circuit breaker is an intelligent device that integrates traditional primary equipment (such as circuit breakers) and secondary equipment (such as smart terminals). It is mainly used in high-voltage lines to cut off or connect circuits. It has overload, short circuit and other protection functions, data acquisition, communication and control functions, supports remote operation and automated management, and realizes data interaction with the master station or other equipment, thereby improving the intelligence level and operation efficiency of the distribution network.

[0003] The Chinese patent authorization announcement number: CN118571696A provides a primary and secondary fusion column mounted circuit breaker. This solution uses an adjustment mechanism that needs to be pressed to complete the rotation, so that when people are testing the primary and secondary fusion column mounted circuit breaker, they can effectively avoid the accidental touching of the adjustment mechanism to cause closing and opening of the circuit, resulting in accidental circuit breaking, and complete the primary power outage of the circuit. When the control lever is rotated, the upper end of the adjustment shaft is driven to move upward through the connecting shaft and the rotating ear, and then the rear end of the connecting rod is driven to move upward to complete the secondary power outage.

[0004] The isolating knife switch on the vacuum circuit breaker is mainly used for secondary power outage, thus forming a safety redundant design. However, the above-mentioned scheme and the isolating knife switches currently on the market only directly open and close the isolating knife switch by rotating the control lever clockwise or counterclockwise. When the staff is performing maintenance, it is easy to touch the operating lever and cause the isolating knife switch to close accidentally, thereby invalidating the safety redundant design of the isolating knife switch, which is not conducive to improving safety.

[0005] Therefore, in order to solve the above problems, a primary and secondary fusion high-voltage pole-mounted circuit breaker is proposed. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] The utility model provides a primary and secondary integrated high-voltage pole-mounted circuit breaker, which can improve the problems existing in the relevant technology: when the staff is performing maintenance, it is easy to touch the operating lever, causing the isolation knife switch to close accidentally, thereby making the safety redundancy design of the isolation knife switch invalid, which is not conducive to improving safety.

[0008] 2. Technical solution

[0009] To solve the above problems, the utility model adopts the following technical solutions.

[0010] An embodiment of the present application provides a primary-secondary fusion high-voltage pole-mounted circuit breaker, comprising a mounting plate and a fixing frame, wherein the bottom end of the mounting plate is fixedly connected to the fixing frame, a plurality of insulators one and a plurality of insulators two are respectively mounted on the top of the fixing frame, a primary-secondary fusion assembly is mounted on the top of the fixing frame, a plurality of vacuum circuit breakers are mounted on the top of the primary-secondary fusion assembly, a connecting rod assembly is mounted on the top of the fixing frame, a pull rod assembly is mounted on the top of the mounting plate, the pull rod assembly is used to drive the connecting rod assembly, the pull rod assembly comprises a movable pull rod and a rotating pull rod, a sliding rod is fixedly mounted on the top of the rotating pull rod, a sliding groove is provided inside the movable pull rod, and the sliding rod is slidably connected to the sliding groove.

[0011] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0012] A pull rod assembly is installed at the operating end of the connecting rod assembly, two sliders are fixed at the outer end of the movable pull rod, and a limit groove is provided in the limit block on the mounting frame to limit the slider on the movable pull rod. When the isolating knife switch needs to be closed, the movable pull rod needs to be pulled upward first so that the slider is out of the limit groove before the movable pull rod can be rotated to drive the connecting rod assembly to close the switch, thereby preventing the operator from accidentally touching the switch and improving its safety.

[0013] In some embodiments, a plurality of the insulators 1 are each installed with a connection terminal 1 on the top, a plurality of the insulators 2 are each installed with a connection terminal 2 on the top, a plurality of the connection terminals 2 are respectively connected to a plurality of the vacuum circuit breakers, a limiting device is fixedly installed at the outer end of the mounting plate, and the limiting device is used to limit the pull rod assembly.

[0014] In some embodiments, the connecting rod assembly includes a connecting rod 2, one end of the connecting rod 2 is rotatably connected to the connecting rod 1, and the end of the connecting rod 2 away from the connecting rod 1 is rotatably connected to the connecting rod 3.

[0015] In some embodiments, the connecting rod assembly also includes a rotating rod and a plurality of driving rods. The rotating rod is rotatably mounted on the inner side of the fixed frame. One end of the rotating rod is fixedly connected to the connecting rod three. The outer end of the rotating rod is fixedly connected to a plurality of rotating blocks. The plurality of rotating blocks are respectively rotatably connected to the outer ends of the plurality of driving rods. The outer ends of the plurality of connecting ends are rotatably connected to isolation knife gates. One end of the driving rod is rotatably connected to the inner side of the isolation knife gate. The isolation knife gate is driven to rotate downward by the driving rod and is connected to the connecting end one.

[0016] In some embodiments, the pull rod assembly further includes a mounting frame, the mounting frame is fixedly mounted on the top of the mounting plate, and the rotating pull rod is rotatably connected to the inner side of the mounting frame.

[0017] In some embodiments, a connecting rod is fixedly connected to the bottom end of the rotating pull rod, the connecting rod is fixedly connected to the connecting rod 1, and the connecting rod 2 drives the rotating rod to rotate through the connecting rod.

[0018] In some embodiments, limiting blocks are fixedly connected on both sides of the mounting frame, limiting grooves are provided on the inner sides of the two limiting blocks, two sliding blocks are fixedly installed on the outer end of the movable pull rod, the sliding blocks are slidably connected to the limiting grooves, a telescopic spring is provided inside the sliding groove, and the two ends of the telescopic spring are respectively against the top of the sliding rod and the inner wall of the sliding groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a partial enlarged structural schematic diagram of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the pull rod assembly of the utility model;

[0022] Figure 4 It is a schematic diagram of the exploded structure of the pull rod assembly of the utility model.

[0023] Description of the numbers in the figure:

[0024] 1. Mounting plate;

[0025] 2. Pull rod assembly; 21. Connecting rod; 22. Mounting frame; 23. Limit block; 24. Limit slot; 25. Rotating pull rod; 26. Sliding rod; 27. Movable pull rod; 28. Sliding block; 29. ​​Sliding slot; 210. Telescopic spring;

[0026] 3. Limiting device;

[0027] 4. Connecting rod assembly; 41. Connection 1; 42. Connecting rod 2; 43. Connecting rod 3; 44. Rotating rod; 45. Driving rod; 46. Isolating knife switch; 47. Rotating block;

[0028] 5. Vacuum circuit breaker;

[0029] 6. Primary and secondary fusion components;

[0030] 7. Fixed frame;

[0031] 8. Insulator 1;

[0032] 9. Insulator 2;

[0033] 10. Connection terminal 1;

[0034] 11. Connect terminal 2. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0036] See also Figure 1-Figure 4 A primary-secondary fusion high-voltage column-mounted circuit breaker comprises a mounting plate 1 and a fixing frame 7, wherein the bottom end of the mounting plate 1 is fixedly connected to the fixing frame 7, a plurality of insulators 1 8 and a plurality of insulators 2 9 are respectively mounted on the top of the fixing frame 7, a primary-secondary fusion assembly 6 is mounted on the top of the fixing frame 7, a plurality of vacuum circuit breakers 5 are mounted on the top of the primary-secondary fusion assembly 6, a connecting rod assembly 4 is mounted on the top of the fixing frame 7, a pull rod assembly 2 is mounted on the top of the mounting plate 1, the pull rod assembly 2 is used to drive the connecting rod assembly 4, the pull rod assembly 2 comprises a movable pull rod 27 and a rotating pull rod 25, a sliding rod 26 is fixedly mounted on the top of the rotating pull rod 25, a sliding groove 29 is provided inside the movable pull rod 27, and the sliding rod 26 is slidably connected to the sliding groove 29.

[0037] A connection terminal 10 is installed on the top of multiple insulators 8, and a connection terminal 2 11 is installed on the top of multiple insulators 9. The multiple connection terminals 2 11 are respectively connected to multiple vacuum circuit breakers 5. A limiting device 3 is fixedly installed on the outer end of the mounting plate 1, and the limiting device 3 is used to limit the pull rod assembly 2.

[0038] The device in this scheme is mainly used in high-voltage lines. A fixing frame 7 is fixed to the bottom of the mounting plate 1. A plurality of insulators 1 8 and a plurality of insulators 2 9 are fixed to the top of the fixing frame 7 by bolts. A connection terminal 10 and a connection terminal 2 11 are fixedly installed on the insulators 1 8 and 2 9 respectively. A primary and secondary fusion component 6 is also installed on the fixing frame 7. A plurality of vacuum circuit breakers 5 are installed on the top of the primary and secondary fusion component 6. The primary and secondary fusion component 6 mainly includes an intelligent terminal and a communication module. The intelligent terminal has data acquisition, communication and control functions, and supports remote operation and automatic management. The communication module supports multiple communication protocols to realize data interaction with a master station or other equipment. Its main functions are to monitor and collect current, voltage and other data in real time, quickly detect and identify faults and isolate faults, support remote operation, and improve response speed.

[0039] The vacuum circuit breaker 5 is mainly composed of a vacuum arc extinguishing chamber, which includes an insulating shell, a shielding cover, a moving contact and a static contact. The moving contact and the static contact are usually made of materials such as copper-chromium alloy. The shielding cover is used to prevent metal vapor from being deposited on the inner wall of the shell to maintain the insulation performance of the arc extinguishing chamber. Through a high vacuum environment and a specially designed contact system, the arc is quickly extinguished when the circuit breaker is opened to ensure reliable circuit disconnection.

[0040] Among them, the connection terminal 2 11 is connected to the static contact on the vacuum circuit breaker 5, and the connection terminal 1 10 is connected to the external line. The connecting rod assembly 4 arranged on the fixed frame 7 is mainly used to control the connection between the connection terminal 2 11 and the connection terminal 1 10. The vacuum circuit breaker 5 is powered off once, and the connecting rod assembly 4 can achieve secondary power off, which plays a role of safety redundancy. The pull rod assembly 2 is installed at the operating end of the connecting rod assembly 4. Two sliders 28 are fixed to the outer end of the movable pull rod 27. A limiting groove 24 is provided in the limiting block 23 on the mounting frame 22 to limit the slider 28 on the movable pull rod 27. When the isolating knife switch 46 is to be closed, the movable pull rod 27 needs to be pulled upward first so that the slider 28 is separated from the limiting groove 24 before the movable pull rod 27 can be rotated to drive the connecting rod assembly 4 to close the switch, thereby preventing the closing caused by accidental touch by the staff and improving its safety.

[0041] See also Figure 1 and Figure 2 The connecting rod assembly 4 includes a second connecting rod 42 , one end of the second connecting rod 42 is rotatably connected to the first connecting rod 41 , and the end of the second connecting rod 42 away from the first connecting rod 41 is rotatably connected to the third connecting rod 43 .

[0042] The connecting rod assembly 4 also includes a rotating rod 44 and multiple driving rods 45. The rotating rod 44 is rotatably installed on the inner side of the fixed frame 7. One end of the rotating rod 44 is fixedly connected to the connecting rod three 43. The outer end of the rotating rod 44 is fixedly connected to multiple rotating blocks 47. The multiple rotating blocks 47 are respectively rotatably connected to the outer ends of multiple driving rods 45. The outer ends of multiple connecting ends 11 are all rotatably connected to isolating knife gates 46. One end of the driving rod 45 is rotatably connected to the inner side of the isolating knife gate 46. The isolating knife gate 46 is driven by the driving rod 45 to rotate downward and connect to the connecting end 10.

[0043] The connecting rod assembly 4 in the present scheme is mainly used for secondary power-off, wherein the two ends of the connecting rod 2 42 are rotatably connected to the connecting rod 1 41 and the connecting rod 2 42 respectively, wherein the connecting rod 1 41 is located above the connecting rod 3 43, and the rotating rod 44 passes through the side wall of the fixing frame 7 and is rotatably installed on the inner side of the fixing frame 7, and the end of the rotating rod 44 extending outward is fixed to the connecting rod 3 43, and a plurality of rotating blocks 47 are fixedly installed on the outer end of the rotating rod 44, and a driving rod 45 is rotatably installed on each rotating block 47, and each connecting end 2 11 is rotatably connected to an isolating knife switch 46, and the connection between the connecting end 2 11 and the connecting end 10 is electrically conductive through the isolating knife switch 46, and one end of the driving rod 45 is rotatably connected to the middle inner side of the isolating knife switch 46, wherein the driving rod 45 is made of insulating ceramic, and mainly serves to prevent current from being conducted to the pull rod assembly 2.

[0044] When the connection 1 41 pulls the connecting rod 2 42 to rotate upward, the connecting rod 2 42 will pull the connecting rod 3 43 to rotate upward, and the rotating rod 44 will drive the rotating block 47 to rotate, and the rotating block 47 will pull the isolating knife gate 46 downward, so that the inner side of the isolating knife gate 46 clamps the front end of the connection end 10, and the closing is completed. When opening the switch, it is only necessary to rotate the rotating rod 44 in the opposite direction.

[0045] See also Figure 3 and Figure 4 The pull rod assembly 2 also includes a mounting frame 22 , which is fixedly mounted on the top of the mounting plate 1 , and the rotating pull rod 25 is rotatably connected to the inner side of the mounting frame 22 .

[0046] The bottom end of the rotating pull rod 25 is fixedly connected with a connecting rod 21 , and the connecting rod 21 is fixedly connected to the first connecting rod 41 . The second connecting rod 42 drives the driving rotating rod 44 to rotate through the connecting rod 21 .

[0047] Limiting blocks 23 are fixedly connected on both sides of the mounting frame 22, and limiting grooves 24 are provided on the inner sides of the two limiting blocks 23. Two sliding blocks 28 are fixedly installed on the outer end of the movable pull rod 27, and the sliding blocks 28 are slidably connected with the limiting grooves 24. A telescopic spring 210 is arranged inside the slide groove 29, and the two ends of the telescopic spring 210 are respectively against the top of the slide rod 26 and the inner wall of the slide groove 29.

[0048] The pull rod assembly 2 in this scheme is mainly used to drive the connecting rod assembly 4, wherein the mounting frame 22 is fixed on the top of the mounting plate 1, a through slot is provided at the outer end of the mounting plate 1, and the mounting frame 22 is mounted on the through slot, the rotating pull rod 25 is rotatably connected to the inner side of the mounting frame 22, the bottom end of the rotating pull rod 25 is fixedly connected to the connecting rod 21, and the connecting rod 21 is fixedly connected to the connecting rod 41, and the limit blocks 23 are fixed on both sides of the mounting frame 22, and the two limit blocks 23 are provided on the sides close to each other. A limit groove 24 is provided, a slide bar 26 is fixed on the top of the rotating pull rod 25, a slide groove 29 is provided inside the movable pull rod 27, the slide bar 26 and the slide groove 29 are slidably connected, so that the movable pull rod 27 can move up and down, two sliders 28 matching the limit groove 24 are fixed on the outer end of the movable pull rod 27, the sliders 28 and the limit groove 24 are slidably connected, a telescopic spring 210 is installed inside the slide groove 29, and the two ends of the telescopic spring 210 are respectively fixed on the inner wall of the slide groove 29 and the slide bar 26.

[0049] Through the pulling force of the telescopic spring 210, the movable pull rod 27 can be pulled downward so that the slider 28 on the movable pull rod 27 is located in the limit groove 24. At this time, the slider 28 is stuck in the limit groove 24, so that the movable pull rod 27 cannot rotate. Through the limitation of the limit block 23, when the staff accidentally touches the movable pull rod 27 when repairing the device, it will not cause the movable pull rod 27 to rotate and close the switch, thereby improving safety.

[0050] When the switch needs to be closed, the movable pull rod 27 can be pulled upward, thereby stretching the telescopic spring 210 to disengage the slider 28 from the limiting groove 24. Then the movable pull rod 27 can be rotated downward so that the connecting rod 21 can drive the connecting rod 41 to drive the connecting rod assembly 4.

[0051] It is worth mentioning that a limit device 3 is fixed at the outer end of the mounting plate 1. The limit device 3 is mainly used to limit the movable pull rod 27 so that it can always be in a closed state. The limit device 3 is mainly composed of a movable clamping plate and a static clamping plate. Semicircular grooves are provided on the movable clamping plate and the static clamping plate. The static clamping plate is fixed on the mounting plate 1, and the movable clamping plate is slidably connected to the outer surface of the mounting plate 1. When the movable pull rod 27 is rotated into the circular groove between the movable clamping plate and the static clamping plate, the movable clamping plate can be moved to cooperate with the static clamping plate to clamp the movable pull rod 27. The movable clamping plate and the static clamping plate are connected by a snap buckle. The restriction of the movable pull rod 27 by the limit device 3 can prevent the connecting rod assembly 4 from accidentally opening the gate, thereby improving the safety of use.

[0052] Working principle: When the device is used for closing, firstly, the movable pull rod 27 needs to be pulled upward to make the slider 28 disengage from the limit groove 24, and then the movable pull rod 27 can be rotated downward so that the connecting rod 21 can drive the connecting end 1 41. When the connecting end 1 41 pulls the connecting rod 2 42 to rotate upward, the connecting rod 2 42 will pull the connecting rod 3 43 to rotate upward, and the rotating rod 44 will drive the rotating block 47 to rotate, and the rotating block 47 will pull the isolating knife gate 46 downward, so that the inner side of the isolating knife gate 46 clamps the front end of the connecting end 10, and the closing is completed at this time;

[0053] When in the open state, the movable rod 27 can be pulled downward by the pulling force of the telescopic spring 210, so that the slider 28 on the movable rod 27 is located in the limiting groove 24. At this time, the slider 28 is stuck in the limiting groove 24, so that the movable rod 27 cannot rotate, and accidentally touching the movable rod 27 will not cause the switch to close.

Claims

1. A primary-secondary fusion high-voltage column mounted circuit breaker, comprising a mounting plate (1) and a fixing frame (7), wherein the bottom end of the mounting plate (1) is fixedly connected to the fixing frame (7), a plurality of first insulators (8) and a plurality of second insulators (9) are respectively mounted on the top of the fixing frame (7), a primary-secondary fusion assembly (6) is mounted on the top of the fixing frame (7), and a plurality of vacuum circuit breakers (5) are mounted on the top of the primary-secondary fusion assembly (6), Features: A connecting rod assembly (4) is installed on the top of the fixing frame (7), and a pull rod assembly (2) is installed on the top of the mounting plate (1), and the pull rod assembly (2) is used to drive the connecting rod assembly (4); The pull rod assembly (2) comprises a movable pull rod (27) and a rotating pull rod (25), a sliding rod (26) is fixedly installed on the top of the rotating pull rod (25), a sliding groove (29) is provided inside the movable pull rod (27), and the sliding rod (26) is slidably connected to the sliding groove (29).

2. The primary and secondary fusion high-voltage pole mounted circuit breaker according to claim 1, characterized in that: A connection terminal one (10) is installed on the top of each of the plurality of insulators one (8), and a connection terminal two (11) is installed on the top of each of the plurality of insulators two (9). The plurality of connection terminals two (11) are respectively connected to the plurality of vacuum circuit breakers (5). A limiting device (3) is fixedly installed on the outer end of the mounting plate (1), and the limiting device (3) is used to limit the pull rod assembly (2).

3. The primary and secondary fusion high-voltage pole mounted circuit breaker according to claim 2, characterized in that: The connecting rod assembly (4) comprises a second connecting rod (42), one end of the second connecting rod (42) is rotatably connected to the first connecting rod (41), and the end of the second connecting rod (42) away from the first connecting rod (41) is rotatably connected to the third connecting rod (43).

4. The primary and secondary fusion high-voltage pole mounted circuit breaker according to claim 3 is characterized in that: The connecting rod assembly (4) also includes a rotating rod (44) and a plurality of driving rods (45), wherein the rotating rod (44) is rotatably mounted on the inner side of the fixed frame (7), one end of the rotating rod (44) is fixedly connected to the connecting rod three (43), the outer end of the rotating rod (44) is fixedly connected to a plurality of rotating blocks (47), the plurality of rotating blocks (47) are respectively rotatably connected to the outer ends of the plurality of driving rods (45), the outer ends of the plurality of connecting ends two (11) are all rotatably connected to an isolation knife gate (46), one end of the driving rod (45) is rotatably connected to the inner side of the isolation knife gate (46), and the isolation knife gate (46) is driven by the driving rod (45) to rotate downward and is connected to the connecting end one (10).

5. The primary and secondary fusion high-voltage pole mounted circuit breaker according to claim 4, characterized in that: The pull rod assembly (2) also includes a mounting frame (22), wherein the mounting frame (22) is fixedly mounted on the top of the mounting plate (1), and the rotating pull rod (25) is rotatably connected to the inner side of the mounting frame (22).

6. The primary and secondary fusion high-voltage pole mounted circuit breaker according to claim 5, characterized in that: The bottom end of the rotating pull rod (25) is fixedly connected to a connecting rod (21), the connecting rod (21) is fixedly connected to the first connecting rod (41), and the second connecting rod (42) drives the rotating rod (44) to rotate through the connecting rod (21).

7. The primary and secondary fusion high-voltage pole mounted circuit breaker according to claim 6, characterized in that: The mounting frame (22) is fixedly connected to limiting blocks (23) on both sides, and limiting grooves (24) are provided on the inner sides of the two limiting blocks (23). Two sliding blocks (28) are fixedly installed on the outer ends of the movable pull rod (27), and the sliding blocks (28) are slidably connected to the limiting grooves (24). A telescopic spring (210) is arranged inside the sliding groove (29), and the two ends of the telescopic spring (210) are respectively against the top of the sliding rod (26) and the inner wall of the sliding groove (29).

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