A pole-mounted vacuum circuit breaker with visual breaking status

Abstract

The present invention belongs to the technical field of circuit breakers, and specifically relates to a vacuum circuit breaker with visualized breaking status on a pole. It comprises a box body, a plurality of vacuum arc extinguishing chambers are fixedly installed on the top of the box body, an upper conductive rod is fixedly connected to the top of the vacuum arc extinguishing chamber, a lower conductive rod is installed on one side of the vacuum arc extinguishing chamber, and the upper conductive rod and the lower conductive rod are used to connect the line; an operating mechanism and an actuator are installed inside the box body, and the operating mechanism comprises a first driving rod, which is rotatably connected to the side wall of the box body; the present invention realizes the visualization of the transmission inside the box body, improves the maintenance efficiency and reduces the maintenance cost; the present invention can not only clearly judge whether the upper contact and the lower contact are opened and closed, but also assist in the rapid opening and closing operation to prevent the arc from being generated due to the slow opening and closing speed; at the same time, it can also perform emergency opening and closing operations when the circuit breaker fails to cope with emergency situations.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breakers, and in particular relates to a pole-mounted vacuum circuit breaker with visual breaking status. Background Art

[0002] A pole-mounted circuit breaker is a protective device used in high-voltage power distribution systems. Its main function is to quickly cut off power supply in the event of a fault to prevent equipment damage. Its working principle is to detect faults through current or voltage, and activate internal mechanical or electronic devices to quickly disconnect the circuit. Pole-mounted circuit breakers are widely used in distribution networks, substations and other occasions to ensure the safety and stability of the power system. Pole-mounted vacuum circuit breakers are a type of pole-mounted circuit breaker. They adopt a vacuum insulation structure with good insulation performance and compact design. It can quickly cut off fault currents and protect the safety of the power system. It is suitable for use in harsh outdoor environments and is widely used in urban distribution networks, rural power grids and industrial power systems.

[0003] The Chinese patent application number 202410245720.8 discloses a high-voltage vacuum circuit breaker, including a travel seat and an arc-starting block, an annular groove is provided on the top of the arc-starting block at the position outside the arc-starting block, and a lower insulating sheet is fixedly installed inside the annular groove, a limit ring is fixedly installed on the outer surface of the travel seat, and the limit ring is arranged inside the annular limit groove, and the upper insulating sheet and the lower insulating sheet are connected by a spring, and the arc-starting block extends from the inside of the stepped hole in the initial state. When the arc-starting device is pushed to move vertically upward as a whole under the action of the connecting rod transmission, the spacing between the arc-starting block and the arc-starting head is always smaller than the spacing between the upper contact and the lower contact, so that the high-voltage arc will only be formed on the surface of the arc-starting block and the arc-starting head, thereby avoiding the problem that the high-voltage arc is formed on the surface of the upper contact and the lower contact, resulting in the formation of pits on the contact surface of the upper contact and the lower contact due to metal evaporation caused by high temperature and high pressure, and providing stability during the operation of the device.

[0004] Since vacuum circuit breakers are vacuum-sealed, the internal circuit-breaking conditions are usually not directly visible. If they are replaced with transparent insulating materials, the insulation performance cannot be guaranteed. At the same time, in daily maintenance, it is often impossible to promptly determine where the vacuum circuit breaker fails, so it cannot be repaired quickly. Some even require replacement of unnecessary parts, increasing maintenance costs. In addition, when a circuit breaker fails, emergency circuit breaking cannot be performed, resulting in the inability to quickly perform circuit breaking operations when emergency circuit breaking is required. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the present invention provides a pole-mounted vacuum circuit breaker with visualized breaking status. The present invention realizes visualization of the transmission inside the box, and can clearly understand the operation status of the internal structure. The staff can immediately understand the direct reason why the upper conductive rod and the lower conductive rod fail to open and close, which is convenient for the staff to carry out targeted and rapid maintenance, thereby improving maintenance efficiency and reducing maintenance costs. The present invention can clearly judge whether the upper contact and the lower contact are opened and closed, realize visualized operation, and assist in rapid opening and closing operations to prevent the generation of arcs due to slow opening and closing speeds. At the same time, emergency opening and closing operations can also be performed when the circuit breaker fails to cope with emergency situations. The present invention realizes modular processing of various components of the circuit breaker, thereby facilitating rapid replacement and maintenance operations on local components.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A column-mounted breaking state visualization vacuum circuit breaker comprises a box body, a plurality of vacuum interrupters are fixedly mounted on the top of the box body, an upper conductive rod is fixedly connected to the top of the vacuum interrupter, a lower conductive rod is mounted on one side of the vacuum interrupter, and the upper conductive rod and the lower conductive rod are used to connect lines; an operating mechanism and an actuator are mounted inside the box body, the operating mechanism comprises a first driving rod, and the first driving rod is rotatably connected to the side wall of the box body; one end of the first driving rod passes through the box body and is arranged outwardly, and an operating handle is fixedly connected at the end point, and a first operating hole is provided on the operating handle; a plurality of connecting rods are fixedly connected to the first driving rod; the actuator comprises a crank, and one end of the connecting rod away from the first driving rod is rotatably connected to the crank through a rotating shaft; a second driving rod is fixedly connected to the middle of the plurality of cranks, and the second driving rod is rotatably connected to the side wall of the box body; one end of the second driving rod passes through the box body and is arranged outwardly, and an indicating block is fixedly connected at the end point; and one end of the crank away from the connecting rod is fixedly connected to a receiving mechanism, which is used to control the opening and closing of the upper conductive rod and the lower conductive rod.

[0008] Furthermore, an upper insulating ring is fixedly connected to the top of the vacuum arc chamber, the upper conductive rod is fixed to the middle of the upper insulating ring, an upper wiring terminal is fixedly provided at one end of the upper conductive rod located outside the vacuum arc chamber, and an upper contact is provided at one end of the upper conductive rod located inside the vacuum arc chamber; a lower conductive groove is fixedly connected to one side of the vacuum arc chamber, and the lower conductive rod is fixed inside the lower conductive groove; a lower wiring terminal is fixedly provided at one end of the lower conductive rod located outside the vacuum arc chamber, and the lower conductive rod is located inside the vacuum arc chamber. A conductive ring is fixedly provided at one end inside the vacuum arc extinguishing chamber, a lower conductive column is slidably connected to the conductive ring, and a lower contact is fixedly provided at the upper end of the lower conductive column; a lower insulating ring is fixedly connected to the bottom of the vacuum arc extinguishing chamber, a bellows is fixedly connected to the upper middle end of the lower insulating ring, the upper end of the bellows is closed and fixedly connected to the lower end of the lower conductive column, and the lower end of the bellows is communicated with the middle of the lower insulating ring; an insulating rod is slidably connected to the middle of the lower insulating ring, and the upper end of the insulating rod is fixedly connected to the bottom end inside the bellows.

[0009] Furthermore, the receiving mechanism includes a C-shaped groove, one side of the C-shaped groove is fixedly connected to one end of the crank; a receiving tube is provided inside the C-shaped groove, and a rotating rod is symmetrically fixedly connected to the outside of the receiving tube, and the rotating rod is rotatably connected to the C-shaped groove; an internal thread is provided inside the receiving tube, and an external thread is provided at the lower end of the insulating rod, and the lower end of the insulating rod is threadedly connected to the upper end of the receiving tube.

[0010] Furthermore, a plurality of mounting through holes are provided at the bottom of the box body, and a visual mechanism is installed on the mounting through holes; the visual mechanism includes a sleeve and a second insulating rod, the upper end of the second insulating rod is provided with an external thread and is threadedly connected to the lower end of the receiving tube; an upper limit ring and a lower limit ring are fixedly provided on the second insulating rod, the sleeve is sleeved on the second insulating rod and the sleeve is located between the upper limit ring and the lower limit ring, and the distance between the upper limit ring and the lower limit ring is greater than the height of the sleeve; four telescopic rod mechanisms are evenly hinged on the lower outer side of the sleeve.

[0011] Furthermore, the telescopic rod mechanism includes a sliding rod, and the two ends of the sliding rod are respectively fixed with a first limit plate and a second limit plate; a return spring and a sliding ring block are sleeved on the sliding rod, and the two ends of the return spring are respectively fixedly connected to the first limit plate and the sliding ring block; a hinge block is fixedly provided on the first limit plate and on the side away from the sliding rod, and a plurality of hinge grooves are evenly fixedly provided on the lower outer side of the sleeve, and the hinge block is hinged to the corresponding hinge grooves; four rotating notches are evenly provided on the inner side of the mounting through hole, and a rotating rod is symmetrically fixedly provided on the outer side of the sliding ring block, and the rotating rod is rotatably connected to the rotating notch; a plurality of L-shaped operating rods are fixedly provided around the bottom of the sleeve, and the lower limit ring is located between the plurality of L-shaped operating rods; a second operating hole is provided at one end of the L-shaped operating rod.

[0012] Furthermore, when the telescopic rod mechanism is located inside the box, the upper contact and the lower contact are closed; when the telescopic rod mechanism is located outside the box, the upper contact and the lower contact are disconnected.

[0013] Furthermore, a plurality of mounting holes are evenly arranged on the top of the box body, a fixing ring is fixedly arranged on the lower end of the outer side of the lower insulating ring, and the fixing ring is fixedly connected to the periphery of the mounting hole by bolts; the lower end of the insulating rod passes through the corresponding mounting hole and extends into the interior of the box body.

[0014] Furthermore, a first drive rod mounting hole and a second drive rod mounting hole are formed on one side wall of the box body, one end of the first drive rod is rotatably connected to the first drive rod mounting hole through a first bearing, and one end of the second drive rod is rotatably connected to the second drive rod mounting hole through a second bearing.

[0015] Furthermore, a support frame is provided at the bottom of the box, and the support frame includes two triangular frames, and the two triangular frames are respectively fixed on both sides of the bottom of the box; one side of the two triangular frames is commonly fixedly connected to a transverse mounting rod, and the transverse mounting rod is arranged opposite to the operating handle; the transverse mounting rod is fixedly installed on the electric pole.

[0016] The present invention also claims a method for performing visual operation using the above-mentioned pole-mounted breaking state visual vacuum circuit breaker, comprising the following steps:

[0017] S1. When the operating handle is operated by the insulating pull rod for opening and closing, the rotation of the first driving rod will drive the second driving rod and the indicator block to rotate. If the indicator block does not rotate, the operating mechanism fails and needs to be repaired;

[0018] S2. When the indicating block rotates and the second insulating rod does not move, the receiving mechanism fails and needs to be repaired;

[0019] S3. When the indicator block rotates and the second insulating rod is displaced but the reset spring of the telescopic rod mechanism is not reset in the reverse direction, the vacuum interrupter fails and needs to be repaired;

[0020] S4. When a fault problem in steps S1 to S3 occurs, the L-shaped operating rod is temporarily displaced up and down by operating the insulating pull rod, so that the reset spring of the telescopic rod mechanism is reversed to perform an emergency opening and closing operation.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The present invention can display the rotation status of the first drive rod and the second drive rod externally through the design of the operating handle and the indicator block, thereby realizing the visualization of the transmission inside the box; and through the cooperation of the receiving mechanism and the visual mechanism, when the circuit breaker is opened and closed, the operation status of the internal structure can be clearly understood, and the staff can immediately understand the direct reason why the upper conductive rod and the lower conductive rod cannot be opened and closed, which is convenient for the staff to carry out targeted and rapid maintenance, thereby improving the maintenance efficiency and reducing the maintenance cost; specifically, when the operating handle is operated by the insulating pull rod to perform the opening and closing operation, the rotation of the first drive rod will drive the rotation of the second drive rod and the indicator block. If the indicator block does not rotate, the operating mechanism fails; when the indicator block rotates and the second insulating rod does not move, the receiving mechanism fails; when the indicator block rotates and the second insulating rod moves but the reset spring of the telescopic rod mechanism is not reset in the reverse direction, the vacuum arc chamber fails.

[0023] (2) The present invention can clearly judge whether the upper contact and the lower contact are opened and closed through the structural design of the visual mechanism, realize visual operation, and assist in rapid opening and closing operations to prevent the generation of arcs due to slow opening and closing speeds; at the same time, emergency opening and closing operations can be performed when the circuit breaker fails to cope with emergency situations; specifically, when the upper contact and the lower contact are closed, the first driving rod is driven to rotate by the operating handle, and under the connection of the connecting rod and the crank, the receiving tube is moved upward, pushing the insulating rod to move, and finally the upper contact and the lower contact are closed, and the telescopic rod mechanism will extend into the interior of the box, thereby realizing the Visual operation; and, in this displacement process, the reset spring of the telescopic rod mechanism is first compressed and then reset in the reverse direction. During the reset process, the sleeve is prompted to move up quickly and push the upper limit ring, thereby assisting in the rapid closing operation; when the upper contact and the lower contact are disconnected, the principle is the same, and the reverse operation can be performed; at the same time, when the circuit breaker fails and cannot be opened and closed by the operating handle, at this time, it is only necessary to operate the L-shaped operating rod through the insulating pull rod to temporarily move up and down, so that the reset spring of the telescopic rod mechanism is reset in the reverse direction, and the reset force of the reset spring is used to achieve rapid emergency opening and closing operations.

[0024] (3) The present invention realizes modular processing of various components of the circuit breaker through the structural design of the receiving mechanism, thereby facilitating and quickly replacing and repairing local components; specifically, when it is necessary to replace and repair the visible mechanism, the upper end of the second insulating rod is released from the threaded connection with the receiving tube by rotating the lower limit ring, and the visible mechanism can be partially replaced and repaired by subsequent dismantling; when it is necessary to replace and repair the vacuum arc chamber, the vacuum arc chamber can be partially replaced by releasing the fixation of the fixing ring and the box body and then rotating the vacuum arc chamber so that the lower end of the insulating rod is released from the threaded connection with the receiving tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a pole-mounted vacuum circuit breaker with visual breaking status according to the present invention;

[0026] Figure 2 A schematic diagram of the internal structure of a pole-mounted vacuum circuit breaker with visual breaking status according to the present invention;

[0027] Figure 3 A schematic diagram of the cross-sectional structure of a pole-mounted breaking state visualization vacuum circuit breaker according to the present invention;

[0028] Figure 4 A schematic diagram of the local structure of a vacuum circuit breaker with visual breaking status on a pole according to the present invention Figure 1 ;

[0029] Figure 5 It is a schematic diagram of the local dispersed structure of a pole-mounted breaking state visualization vacuum circuit breaker according to the present invention;

[0030] Figure 6 A schematic diagram of the local structure of a vacuum circuit breaker with visual breaking status on a pole according to the present invention Figure 2 ;

[0031] Figure 7 A schematic diagram of the local structure of a vacuum circuit breaker with visual breaking status on a pole according to the present invention Figure 3 ;

[0032] Figure 8 The present invention is a schematic diagram of a visual mechanism dispersed structure of a pole-mounted breaking state visualized vacuum circuit breaker.

[0033] The reference numerals are as follows:

[0034] Box body-100; mounting hole-110; first drive rod mounting hole-120; second drive rod mounting hole-130; mounting through hole-140; rotation slot-141; operating mechanism-200; first drive rod-210; operating handle-220; first operating hole-221; connecting rod-230; support frame-300; triangular bracket-310; transverse mounting rod-320; actuator-400; second drive rod-410; crank-420; second bearing-430; indicator block-440; visual mechanism-500; sleeve-510; hinge slot-511; L-shaped operating rod-512; second operating hole-513; second insulating rod-520; upper limit ring-530; lower limit Ring-540; telescopic rod mechanism-550; sliding rod-551; first limiting plate-552; reset spring-553; sliding ring block-554; second limiting plate-555; rotating rod-556; hinge block-557; vacuum arc chamber-600; upper insulating ring-610; lower insulating ring-620; fixing ring-621; lower conductive groove-630; insulating rod-640; upper conductive rod-700; upper terminal-710; upper contact-720; lower conductive rod-800; lower terminal-810; conductive ring-820; lower contact-830; lower conductive column-840; bellows-850; receiving mechanism-900; C-shaped groove-910; rotating rod-920; receiving tube-930. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the embodiments. Of course, the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0036] Although the steps in the present invention are arranged with numbers, they are not used to limit the order of the steps. Unless the order of the steps is clearly stated or the execution of a certain step requires other steps as a basis, the relative order of the steps can be adjusted. It is understood that the term "and / or" used in this article involves and covers any and all possible combinations of one or more of the associated listed items. Example

[0037] like Figure 1 to Figure 8As shown, a pole-mounted breaking state visualized vacuum circuit breaker comprises a box body 100, a plurality of vacuum interrupter chambers 600 are fixedly mounted on the top of the box body 100, an upper conductive rod 700 is fixedly connected to the top of the vacuum interrupter chamber 600, a lower conductive rod 800 is mounted on one side of the vacuum interrupter chamber 600, and the upper conductive rod 700 and the lower conductive rod 800 are used to connect the lines; an operating mechanism 200 and an actuator 400 are mounted inside the box body 100, the operating mechanism 200 comprises a first driving rod 210, and the first driving rod 210 is rotatably connected to the side wall of the box body 100; one end of the first driving rod 210 passes through the box body 100 and is arranged outwardly, and an operating handle 220 is fixedly connected at the end point, and the operating handle 220 is fixedly connected to the end point. A first operating hole 221 is provided on the movable handle 220; a plurality of connecting rods 230 are fixedly connected to the first driving rod 210; the actuator 400 includes a crank 420, and the connecting rod 230 and one end away from the first driving rod 210 are rotatably connected to the crank 420 through a rotating shaft; a second driving rod 410 is fixedly connected to the middle parts of the plurality of cranks 420, and the second driving rod 410 is rotatably connected to the side wall of the box body 100; one end of the second driving rod 410 passes through the box body 100 and is arranged outwardly, and an indicating block 440 is fixedly connected at the end point; the crank 420 and one end away from the connecting rod 230 are fixedly connected to a receiving mechanism 900 for controlling the opening and closing of the upper conductive rod 700 and the lower conductive rod 800.

[0038] The present invention can display the rotation status of the first drive rod 210 and the second drive rod 410 externally through the design of the operating handle 220 and the indicator block 440, thereby realizing the visualization of the internal transmission of the box body 100; and through the cooperation of the receiving mechanism 900 and the visual mechanism 500, when the circuit breaker is opened and closed, the operation status of the internal structure can be clearly understood, and the staff can immediately understand the direct reason why the upper conductive rod 700 and the lower conductive rod 800 have not been opened and closed, which is convenient for the staff to carry out targeted and rapid maintenance, improves maintenance efficiency and reduces maintenance costs; the receiving mechanism 900 and the visual mechanism 500 will be described in detail later.

[0039] It is worth noting that the first driving rod 210 of the operating mechanism 200 of the present invention can be controlled by the operating handle 220, and can also be connected to an energy storage mechanism to store energy in the energy storage mechanism and trigger the rotation of the first driving rod 210 of the operating mechanism 200. The energy storage mechanism is a prior art and will not be described in detail here.

[0040] Furthermore, an upper insulating ring 610 is fixedly connected to the top of the vacuum arc chamber 600, the upper conductive rod 700 is fixed to the middle of the upper insulating ring 610, and an upper terminal 710 is fixedly provided at one end of the upper conductive rod 700 located outside the vacuum arc chamber 600, and an upper contact 720 is provided at one end of the upper conductive rod 700 located inside the vacuum arc chamber 600; a lower conductive slot 630 is fixedly connected to one side of the vacuum arc chamber 600, and the lower conductive rod 800 is fixed inside the lower conductive slot 630; a lower terminal 810 is fixedly provided at one end of the lower conductive rod 800 located outside the vacuum arc chamber 600, and the lower conductive rod 800 is located inside the lower conductive slot 630. A conductive ring 820 is fixedly provided at one end inside the vacuum arc extinguishing chamber 600, and a lower conductive column 840 is slidably connected to the conductive ring 820, and a lower contact 830 is fixedly provided at the upper end of the lower conductive column 840; a lower insulating ring 620 is fixedly connected to the bottom of the vacuum arc extinguishing chamber 600, and a bellows 850 is fixedly connected to the upper middle end of the lower insulating ring 620, the upper end of the bellows 850 is closed and fixedly connected to the lower end of the lower conductive column 840, and the lower end of the bellows 850 is connected to the middle of the lower insulating ring 620; an insulating rod 640 is slidably connected to the middle of the lower insulating ring 620, and the upper end of the insulating rod 640 is fixedly connected to the bottom end inside the bellows 850.

[0041] It is worth noting that the present invention connects the corresponding circuits through the upper terminal 710 and the lower terminal 810, and then drives the lower conductive column 840 to move by controlling the up and down displacement of the insulating rod 640, thereby realizing the opening and closing operation of the upper contact 720 and the lower contact 830, which will not be described in detail here.

[0042] Furthermore, the receiving mechanism 900 includes a C-shaped groove 910, one side of which is fixedly connected to one end of the crank 420; a receiving tube 930 is provided inside the C-shaped groove 910, and a rotating rod 920 is symmetrically fixedly connected to the outer side of the receiving tube 930, and the rotating rod 920 is rotatably connected to the C-shaped groove 910; an internal thread is provided inside the receiving tube 930, and an external thread is provided at the lower end of the insulating rod 640, and the lower end of the insulating rod 640 is threadedly connected to the upper end of the receiving tube 930.

[0043] Furthermore, a plurality of mounting through holes 140 are provided at the bottom of the box body 100, and a visual mechanism 500 is installed on the mounting through holes 140; the visual mechanism 500 includes a sleeve 510 and a second insulating rod 520, and the upper end of the second insulating rod 520 is provided with an external thread and is threadedly connected to the lower end of the receiving tube 930; an upper limit ring 530 and a lower limit ring 540 are fixedly provided on the second insulating rod 520, and the sleeve 510 is sleeved on the second insulating rod 520 and the sleeve 510 is located between the upper limit ring 530 and the lower limit ring 540, and the distance between the upper limit ring 530 and the lower limit ring 540 is greater than the height of the sleeve 510; four telescopic rod mechanisms 550 are evenly hinged on the lower outer side of the sleeve 510.

[0044] The present invention realizes modular processing of various components of the circuit breaker through the structural design of the receiving mechanism 900, thereby facilitating and quickly replacing and repairing local components; specifically, when the visible mechanism 500 needs to be replaced and repaired, the upper end of the second insulating rod 520 is released from the threaded connection with the receiving tube 930 by rotating the lower limit ring 540, and the visible mechanism 500 can be partially replaced and repaired by subsequent dismantling; when the vacuum arc chamber 600 needs to be replaced and repaired, the vacuum arc chamber 600 can be partially replaced by releasing the fixation of the fixing ring 621 and the box body 100 and then rotating the vacuum arc chamber 600 so that the lower end of the insulating rod 640 is released from the threaded connection with the receiving tube 930.

[0045] Furthermore, the telescopic rod mechanism 550 includes a slide bar 551, and the two ends of the slide bar 551 are respectively fixed with a first limit plate 552 and a second limit plate 555; a return spring 553 and a sliding ring block 554 are sleeved on the slide bar 551, and the two ends of the return spring 553 are respectively fixedly connected to the first limit plate 552 and the sliding ring block 554; the first limit plate 552 is fixedly provided with a hinge block 557 on the side away from the slide bar 551, and a plurality of hinge blocks 557 are evenly fixed on the outer side of the sleeve 510. The hinge block 557 is hinged to the corresponding hinge groove 511; four rotating grooves 141 are evenly opened on the inner side of the mounting through hole 140, and a rotating rod 556 is symmetrically fixed on the outer side of the sliding ring block 554, and the rotating rod 556 is rotatably connected to the rotating groove 141; a plurality of L-shaped operating rods 512 are fixed around the bottom of the sleeve 510, and the lower limit ring 540 is located between the plurality of L-shaped operating rods 512; a second operating hole 513 is opened at one end of the L-shaped operating rod 512.

[0046] Furthermore, when the telescopic rod mechanism 550 is located inside the box 100 , the upper contact 720 and the lower contact 830 are closed; when the telescopic rod mechanism 550 is located outside the box 100 , the upper contact 720 and the lower contact 830 are disconnected.

[0047] When the operating handle 220 of the present invention is operated by the insulating pull rod to perform opening and closing operations, the rotation of the first drive rod 210 will drive the second drive rod 410 and the indicator block 440 to rotate. If the indicator block 440 does not rotate, it means that the operating mechanism 200 has a fault; when the indicator block 440 rotates and the second insulating rod 520 does not move, it means that the receiving mechanism 900 has a fault; when the indicator block 440 rotates and the second insulating rod 520 moves but the reset spring 553 of the telescopic rod mechanism 550 is not reset in the opposite direction, a fault occurs inside the vacuum arc chamber 600.

[0048] It is worth noting that the principle of reverse reset of the reset spring 553 of the telescopic rod mechanism 550 is that the reset spring 553 is first compressed and then rebounded to reset through the up and down displacement of the sleeve 510 .

[0049] The present invention uses the structural design of the visual mechanism 500 to clearly determine whether the upper contact 720 and the lower contact 830 are opened and closed, realizing visual operation, and can also assist in rapid opening and closing operations to prevent the generation of arcs due to slow opening and closing speeds; at the same time, emergency opening and closing operations can also be performed when the circuit breaker fails to cope with emergency situations; specifically, when the upper contact 720 and the lower contact 830 are closed, the first driving rod 210 is driven to rotate by the operating handle 220, and under the connection of the connecting rod 230 and the crank 420, the receiving tube 930 is moved upward, pushing the insulating rod 640 to move, and finally the upper contact 720 and the lower contact 830 are closed. At this time, the telescopic rod mechanism 550 will extend into the interior of the box body 100, thereby realizing visualization. operation; and, in this displacement process, the reset spring 553 of the telescopic rod mechanism 550 is first compressed and then reset in the reverse direction. During the reset process, the sleeve 510 is prompted to move up quickly and push the upper limit ring 530, thereby assisting in the rapid closing operation to prevent the generation of arcs due to slow opening and closing speeds; when the upper contact 720 and the lower contact 830 are disconnected, the principle is the same, and the reverse operation can be performed; at the same time, when the circuit breaker fails and the operating handle 220 cannot be used for opening and closing, at this time, it is only necessary to operate the L-shaped operating rod 512 through the insulating pull rod to perform a temporary up and down displacement, so that the reset spring 553 of the telescopic rod mechanism 550 performs a reverse reset operation, and the reset force of the reset spring 553 is used to achieve a rapid emergency opening and closing operation.

[0050] It is worth noting that the distance between the upper limit ring 530 and the lower limit ring 540 of the present invention is greater than the height of the sleeve 510, so that when the circuit breaker fails and cannot be opened and closed by operating the handle 220, the reset spring 553 of the telescopic rod mechanism 550 can be reversely reset to perform a rapid emergency opening and closing operation. Otherwise, it is impossible to ensure rapid opening and closing by manually adjusting the up and down displacement of the second insulating rod 520 through the insulating pull rod, which will lead to the generation of an arc. In addition, if the circuit cannot be opened and closed by the reverse reset of the reset spring 553 of the telescopic rod mechanism 550, it is a serious fault and a stuck situation occurs, which requires shutdown for maintenance, and no emergency circuit opening and closing treatment is required, thereby protecting the equipment.

[0051] Furthermore, a plurality of mounting holes 110 are evenly formed on the top of the box body 100, a fixing ring 621 is fixedly formed on the lower end of the outer side of the lower insulating ring 620, and the fixing ring 621 is fixedly connected to the periphery of the mounting hole 110 by bolts; the lower end of the insulating rod 640 passes through the corresponding mounting hole 110 and extends into the interior of the box body 100. The fixing ring 621 facilitates the loading and unloading of the vacuum interrupter 600.

[0052] Furthermore, a first drive rod mounting hole 120 and a second drive rod mounting hole 130 are formed on one side wall of the box body 100, one end of the first drive rod 210 is rotatably connected to the first drive rod mounting hole 120 via a first bearing, and one end of the second drive rod 410 is rotatably connected to the second drive rod mounting hole 130 via a second bearing 430.

[0053] Furthermore, a support frame 300 is provided at the bottom of the box 100, and the support frame includes two triangular brackets 310, and the two triangular brackets 310 are respectively fixed on both sides of the bottom of the box 100; one side of the two triangular brackets 310 is commonly fixedly connected to a transverse mounting rod 320, and the transverse mounting rod 320 is arranged opposite to the operating handle 220; the transverse mounting rod 320 is fixedly installed on the electric pole. The support frame 300 facilitates the fixing of the box 100 and will not block and affect the operation of the visual mechanism 500 and the operating mechanism 200 by the staff through the insulating pull rod.

[0054] A method for visual operation using the above-mentioned pole-mounted breaking state visualization vacuum circuit breaker comprises the following steps:

[0055] S1. When the operating handle 220 is operated by the insulating pull rod to open and close, the rotation of the first driving rod 210 will drive the second driving rod 410 and the indicator block 440 to rotate. If the indicator block 440 does not rotate, the operating mechanism 200 fails and needs to be repaired.

[0056] S2. When the indicating block 440 rotates and the second insulating rod 520 does not move, the receiving mechanism 900 fails and needs to be repaired;

[0057] S3, when the indicating block 440 rotates and the second insulating rod 520 is displaced but the reset spring 553 of the telescopic rod mechanism 550 is not reset in the reverse direction, the vacuum interrupter 600 fails and needs to be repaired;

[0058] S4. When a fault problem in steps S1 to S3 occurs, the L-shaped operating rod 512 is temporarily displaced up and down by operating the insulating pull rod, so that the reset spring 553 of the telescopic rod mechanism 550 is reversely reset to perform an emergency opening and closing operation.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and changes without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A pole-mounted breaking state visualization vacuum circuit breaker, characterized in that: The invention comprises a box (100), wherein a plurality of vacuum interrupter chambers (600) are fixedly mounted on the top of the box (100), an upper conductive rod (700) is fixedly connected to the top of the vacuum interrupter chamber (600), a lower conductive rod (800) is mounted on one side of the vacuum interrupter chamber (600), and the upper conductive rod (700) and the lower conductive rod (800) are used to connect lines; an operating mechanism (200) and an actuator (400) are mounted inside the box (100), and the operating mechanism (200) comprises a first driving rod (210), and the first driving rod (210) is rotatably connected to a side wall of the box (100); one end of the first driving rod (210) passes through the box (100) and is arranged outward, and an operating handle (220) is fixedly connected at the end point, and the operating handle (220) is provided with a a first operating hole (221); a plurality of connecting rods (230) are fixedly connected to the first driving rod (210); the actuator (400) comprises a crank (420), and one end of the connecting rod (230) away from the first driving rod (210) is rotatably connected to the crank (420) via a rotating shaft; a second driving rod (410) is fixedly connected to the middle of the plurality of cranks (420), and the second driving rod (410) is rotatably connected to the side wall of the box body (100); one end of the second driving rod (410) passes through the box body (100) and is arranged outwardly, and an indicating block (440) is fixedly connected to the end point; one end of the crank (420) away from the connecting rod (230) is fixedly connected to a receiving mechanism (900) for controlling the opening and closing of the upper conductive rod (700) and the lower conductive rod (800); The top of the vacuum arc extinguishing chamber (600) is fixedly connected to an upper insulating ring (610), the upper conductive rod (700) is fixed to the middle of the upper insulating ring (610), an upper wiring terminal (710) is fixedly provided at one end of the upper conductive rod (700) located outside the vacuum arc extinguishing chamber (600), and an upper contact (720) is provided at one end of the upper conductive rod (700) located inside the vacuum arc extinguishing chamber (600); a lower conductive slot (630) is fixedly connected to one side of the vacuum arc extinguishing chamber (600), and the lower conductive rod (800) is fixed inside the lower conductive slot (630); a lower wiring terminal (810) is fixedly provided at one end of the lower conductive rod (800) located outside the vacuum arc extinguishing chamber (600), and the lower conductive rod (800) is located inside the vacuum arc extinguishing chamber (600). A conductive ring (820) is fixedly provided at one end inside the arc extinguishing chamber (600), a lower conductive column (840) is slidably connected to the conductive ring (820), and a lower contact (830) is fixedly provided at the upper end of the lower conductive column (840); a lower insulating ring (620) is fixedly connected to the bottom of the vacuum arc extinguishing chamber (600), a bellows (850) is fixedly connected to the upper middle end of the lower insulating ring (620), the upper end of the bellows (850) is closed and fixedly connected to the lower end of the lower conductive column (840), and the lower end of the bellows (850) is connected to the middle of the lower insulating ring (620); an insulating rod (640) is slidably connected to the middle of the lower insulating ring (620), and the upper end of the insulating rod (640) is fixedly connected to the bottom end inside the bellows (850); The receiving mechanism (900) comprises a C-shaped groove (910), one side of the C-shaped groove (910) being fixedly connected to one end of the crank (420); a receiving tube (930) is provided inside the C-shaped groove (910), a rotating rod (920) is symmetrically fixedly connected to the outside of the receiving tube (930), and the rotating rod (920) is rotatably connected to the C-shaped groove (910); an internal thread is provided inside the receiving tube (930), an external thread is provided at the lower end of the insulating rod (640), and the lower end of the insulating rod (640) is threadedly connected to the upper end of the receiving tube (930); The bottom of the box body (100) is provided with a plurality of mounting through holes (140), and a visual mechanism (500) is mounted on the mounting through holes (140); the visual mechanism (500) comprises a sleeve (510) and a second insulating rod (520), the upper end of the second insulating rod (520) being provided with an external thread and being threadedly connected to the lower end of the receiving tube (930); an upper limit ring (530) and a lower limit ring (540) are fixedly provided on the second insulating rod (520), the sleeve (510) is sleeved on the second insulating rod (520) and the sleeve (510) is located between the upper limit ring (530) and the lower limit ring (540), and the distance between the upper limit ring (530) and the lower limit ring (540) is greater than the height of the sleeve (510); four telescopic rod mechanisms (550) are evenly hinged on the lower outer side of the sleeve (510); The telescopic rod mechanism (550) comprises a sliding rod (551), and a first limiting plate (552) and a second limiting plate (555) are fixedly provided at both ends of the sliding rod (551); a return spring (553) and a sliding ring block (554) are sleeved on the sliding rod (551), and the two ends of the return spring (553) are fixedly connected to the first limiting plate (552) and the sliding ring block (554); a hinge block (557) is fixedly provided on the side of the first limiting plate (552) away from the sliding rod (551), and a plurality of hinge grooves (557) are evenly fixedly provided on the lower outer side of the sleeve (510). 511), the hinge block (557) is hinged to the corresponding hinge groove (511); four rotating notches (141) are evenly arranged on the inner side of the mounting through hole (140); a rotating rod (556) is symmetrically fixedly arranged on the outer side of the sliding ring block (554), and the rotating rod (556) is rotatably connected to the rotating notch (141); a plurality of L-shaped operating rods (512) are fixedly arranged around the bottom of the sleeve (510), and the lower limit ring (540) is located between the plurality of L-shaped operating rods (512); a second operating hole (513) is arranged at one end of the L-shaped operating rod (512); When the telescopic rod mechanism (550) is located inside the box (100), the upper contact (720) and the lower contact (830) are closed; when the telescopic rod mechanism (550) is located outside the box (100), the upper contact (720) and the lower contact (830) are disconnected.

2. According to claim 1, a pole-mounted breaking state visualization vacuum circuit breaker is characterized in that: A plurality of mounting holes (110) are evenly arranged on the top of the box body (100); a fixing ring (621) is fixedly arranged on the lower end of the outer side of the lower insulating ring (620); the fixing ring (621) is fixedly connected to the periphery of the mounting hole (110) by bolts; and the lower end of the insulating rod (640) passes through the corresponding mounting hole (110) and extends into the interior of the box body (100).

3. According to claim 1, a pole-mounted breaking state visualization vacuum circuit breaker is characterized in that: A first drive rod mounting hole (120) and a second drive rod mounting hole (130) are formed on one side wall of the box body (100); one end of the first drive rod (210) is rotatably connected to the first drive rod mounting hole (120) via a first bearing, and one end of the second drive rod (410) is rotatably connected to the second drive rod mounting hole (130) via a second bearing (430).

4. According to claim 1, a pole-mounted breaking state visualization vacuum circuit breaker is characterized in that: A support frame (300) is provided at the bottom of the box body (100), and the support frame comprises two triangular frames (310), and the two triangular frames (310) are respectively fixed to two sides of the bottom of the box body (100); one side of the two triangular frames (310) is commonly fixedly connected to a transverse mounting rod (320), and the transverse mounting rod (320) is arranged opposite to the operating handle (220); the transverse mounting rod (320) is fixedly mounted on a power pole.

5. A method for visual operation using the pole-mounted breaking state visualization vacuum circuit breaker according to any one of claims 1 to 4, characterized in that: The steps include: S1. When the operating handle (220) is operated by the insulating pull rod to perform an opening and closing operation, the rotation of the first driving rod (210) drives the second driving rod (410) and the indicating block (440) to rotate. If the indicating block (440) does not rotate, the operating mechanism (200) fails and needs to be repaired. S2: when the indicating block (440) rotates and the second insulating rod (520) does not move, the receiving mechanism (900) fails and needs to be repaired; S3. When the indicating block (440) rotates and the second insulating rod (520) is displaced but the reset spring (553) of the telescopic rod mechanism (550) is not reset in the reverse direction, the vacuum interrupter (600) fails and needs to be repaired; S4. When a fault problem in steps S1 to S3 occurs, the L-shaped operating rod (512) is temporarily displaced up and down by operating the insulating pull rod, so that the reset spring (553) of the telescopic rod mechanism (550) is reset in the reverse direction, thereby performing an emergency opening and closing operation.

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