An outdoor pole-mounted intelligent protection switch

Abstract

The present invention relates to an outdoor pole-mounted intelligent protection switch, wherein an upper wiring terminal and a current transformer are provided at the upper end of an insulating sleeve, a switch-on and switch-off mechanism comprises a switch-on and switch-off drive shaft and a permanent magnet mechanism, a moving contact end rod is provided at the upper end of a vacuum interrupter, and a static contact end rod is provided at the lower end, the upper wiring terminal, the current transformer, and the moving contact end rod are connected in sequence, the switch-on and switch-off drive shaft is driven to rise and fall by a permanent magnet mechanism, and the lower end is fixedly connected to the upper end of the moving contact end rod, the lower end of the insulating sleeve is provided with a lower wiring terminal and an articulated seat, and the lower end of the isolating knife switch is articulated on the articulated seat, the upper end of the isolating knife switch is cooperatively connected with the lower end of the static contact end rod, a control module is provided on the outer side of the upper end of the insulating sleeve, and the current transformer and the permanent magnet mechanism are respectively connected to the control module through lines. The present invention has a compact structure and is flexible to use, and can also be manually operated when the permanent magnet mechanism controlling the vacuum interrupter fails.

Description

Technical Field

[0001] The invention relates to the field of electric power equipment, in particular to an outdoor pole-mounted intelligent protection switch. Background Art

[0002] At present, common power line protection switches include drop-out fuses, circuit breakers, outdoor pole switches and other devices. For example, the CN201007970Y patent discloses an outdoor pole-mounted vacuum load drop-out fuse, which uses the fuse in the fuse to melt to achieve the protection function, but the device needs to replace the fuse, and the arc-extinguishing tube assembly needs to be removed and hung with an insulating rod during replacement, which is not very convenient to operate. The CN2632834Y patent discloses an outdoor pole-mounted vacuum circuit breaker, which uses the operating mechanism in the base frame to control the opening and closing of the vacuum arc chamber to achieve the protection function. However, with the development of technology, the operating mechanism of the vacuum arc chamber in the prior art is mostly automatically controlled. Once the vacuum arc chamber is operated, If the mechanism fails, the entire device cannot be used. Patent CN216250531U discloses an outdoor pole switch with an anti-twist electromagnetic repulsion mechanism. The vacuum arc chamber opening and closing drive mechanism of the device is also an automatic control device, wherein when the opening coil generates magnetic flux, an electromagnetic force is generated on the drive disk to move toward the switch body, thereby separating the conductor on the switch body from the outlet plate to complete the vacuum arc chamber disconnection action. When the closing coil generates magnetic flux, an electromagnetic force is generated on the drive disk to move away from the switch body, thereby contacting the conductor on the switch body with the outlet plate to complete the vacuum arc chamber closing action. However, the device also has the problem that the entire device cannot be used when the vacuum arc chamber operating mechanism fails.

[0003] In addition, the drop-out fuses, circuit breakers, outdoor pole switches and other devices in the prior art generally have the disadvantages of complex structure, easy mechanical failure, large size, high cost, etc., and are not flexible enough in operation and are not conducive to remote monitoring and control. Summary of the invention

[0004] The object of the present invention is to provide an outdoor pole-mounted intelligent protection switch, which can realize automatic control of power on and off by using a vacuum interrupter, and can also realize manual control of power on and off by using an isolating knife switch. It is flexible to use, and when the permanent magnet mechanism controlling the vacuum interrupter fails, the opening and closing handle can be used to drive the opening and closing drive shaft to move for manual control, thereby avoiding the problem that the switch device cannot be used when the vacuum interrupter operating mechanism fails.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] An outdoor pole-mounted intelligent protection switch comprises an insulating sleeve and a switch-on / off mechanism, a vacuum interrupter and an isolating knife switch arranged in the insulating sleeve, wherein an upper terminal and a current transformer are arranged at the upper end of the insulating sleeve, and the switch-on / off mechanism comprises a switch-on / off drive shaft and a permanent magnet mechanism, a moving contact end rod is arranged at the upper end of the vacuum interrupter, and a static contact end rod is arranged at the lower end, wherein the upper terminal, the current transformer and the moving contact end rod are connected in sequence, the switch-on / off drive shaft is driven to rise and fall by the permanent magnet mechanism and the lower end is fixedly connected to the upper end of the moving contact end rod, the lower end of the insulating sleeve is provided with a lower terminal and an articulated seat connected by a line, and the lower end of the isolating knife switch is hinged on the articulated seat, the upper end of the isolating knife switch is cooperatively connected to the lower end of the static contact end rod, a control module is arranged on the outer side of the upper end of the insulating sleeve, and the current transformer and the permanent magnet mechanism are respectively connected to the control module by lines.

[0007] The opening and closing drive shaft includes a main shaft body and an upper limit retaining ring, an upper energy storage spring, a limit platform, a lower energy storage spring and a lower limit retaining ring arranged on the main shaft body, and a limit long hole is also provided at the position where the limit platform is provided on the main shaft body. The opening and closing mechanism includes an opening and closing handle, and an opening and closing pin shaft is provided on one side of the opening and closing handle. The limit platform is driven to rise and fall by the opening and closing pin shaft, and the opening and closing pin shaft passes through the limit long hole.

[0008] The permanent magnet mechanism includes a lifting shaft, and an armature is fixedly arranged on the lifting shaft. An opening yoke, an opening coil, a permanent magnet, a closing coil and a closing yoke are arranged on the outer side of the armature in sequence from top to bottom. The lower end of the lifting shaft is fixedly connected to the upper end of the opening and closing drive shaft.

[0009] A handle connecting rod is provided on one side of the opening and closing handle, and a shift fork is provided on the handle connecting rod, and an opening and closing pin shaft is provided on the shift fork.

[0010] An overtravel adjustment rod and an overtravel spring are provided at the lower end of the main shaft body, and the overtravel spring is arranged between the lower limit retaining ring and the upper end of the overtravel adjustment rod, and the lower end of the overtravel adjustment rod is threadedly fixedly connected to the moving contact end rod in the vacuum interrupter.

[0011] The insulating sleeve includes a closing and opening mechanism cavity, a vacuum arc extinguishing chamber cavity and an isolating knife switch cavity which are arranged in sequence from top to bottom, wherein a detachable outer shell is provided on one side of the closing and opening mechanism cavity, and a current transformer cavity is provided on the other side, and an opening is formed on one side of the isolating knife switch cavity for the isolating knife switch to swing in and out.

[0012] An isolation knife switch insulation shield is arranged on the outer side of the isolation knife switch, and a pull ring is arranged on the outer side of the isolation knife switch insulation shield.

[0013] A fixing frame is fixedly provided on the outside of the outer shell, and the fixing frame is concave and has slide grooves on both sides inside, and a card hole is provided at the lower end of the slide groove side of the slide groove, and plug-in parts are provided on both sides of the control module, and an elastic arm is provided on the lower side of the plug-in part, and a card block is provided at the lower end of the elastic arm. The control module is inserted from the open side of the fixing frame, and after insertion, the plug-in part slides along the corresponding side slide groove until the card block is stuck in the card hole on the corresponding side.

[0014] The slide groove includes a slide groove bottom surface and a slide groove side surface which are perpendicular to each other, and when the control module is inserted into the fixing frame, the bottom surface of the plug-in portion moves along the slide groove bottom surface, and the plug-in portion side wall outside the plug-in portion moves along the slide groove side surface, and the front end of the control module is provided with an elastic contact element which realizes electrical connection with the electrical circuit in the outer shell.

[0015] The control module is provided with a solar panel, a battery, a central processing unit and a wireless communication circuit, wherein the solar panel is connected to the battery through a line, the battery is connected to the central processing unit and the wireless communication circuit through a line, and the permanent magnet mechanism and the current transformer are respectively connected to the central processing unit through the line.

[0016] The advantages and positive effects of the present invention are:

[0017] 1. The present invention can realize automatic control of power on and off by using the vacuum interrupter, and can also realize manual control of power on and off by using the isolating knife switch, which is more flexible to use. In addition, when the permanent magnet mechanism controlling the vacuum interrupter fails, the opening and closing handle can be used to drive the opening and closing drive shaft to move to realize manual control, thereby avoiding the problem that the switch device cannot be used when the vacuum interrupter operating mechanism fails. In addition, the opening and closing mechanism of the present invention has a simple and compact structure, reliable functions and low manufacturing cost.

[0018] 2. The present invention integrates the opening and closing mechanism, vacuum arc extinguishing chamber, isolation knife switch and other mechanisms into the insulating bushing. The overall structure of the product is compact, the appearance is beautiful, and it is easy to use.

[0019] 3. The outer shell of the present invention is detachably arranged on the upper end of the insulating sleeve, and the control module is detachably connected to the outer shell through a fixing frame, and the control module is connected by plugging and matching the plug-in parts on both sides with the sliding grooves inside the concave fixing frame on both sides. This structure does not require too much installation space, which can make the overall structure of the product compact, and also facilitates the combined installation and daily maintenance needs of the switch.

[0020] 4. The current transformer of the present invention is cast in an insulating sleeve, which can monitor the switch load status in real time, and the control module can be equipped with solar panels, batteries, central processing unit, wireless communication circuit and other modules, which can communicate with the FTU or transformer master station system, thereby realizing the intelligent power grid requirements of real-time monitoring and remote operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention,

[0022] Figure 2 for Figure 1 Another perspective structural diagram of the present invention,

[0023] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the figure is as follows:

[0024] Figure 4 for Figure 2 An enlarged schematic diagram of the center opening and closing drive shaft, opening and closing handle and permanent magnet mechanism.

[0025] Figure 5 for Figure 4 Enlarged schematic diagram of the center opening and closing drive shaft,

[0026] Figure 6 for Figure 5 Schematic diagram of the exploded view of the center opening and closing drive shaft.

[0027] Figure 7 for Figure 5 The structural diagram of the permanent magnet mechanism.

[0028] Figure 8 for Figure 1 Schematic diagram of the structure of the insulating sleeve.

[0029] Fig. 9 for Figure 8 Another structural diagram of the insulating sleeve.

[0030] Fig.10 for Figure 1 Installation diagram of the control module.

[0031] Fig.11 for Fig.10 Schematic diagram of the structure of the fixed frame.

[0032] Fig.12 for Fig.10 Main view of the control module.

[0033] Fig.13 This is a schematic diagram of the electrical connection structure between a control module and an outer shell used in the present invention.

[0034] Fig.14 This is a schematic diagram of the electrical connection structure between another control module and the outer shell used in the present invention.

[0035] Fig.15 It is a schematic diagram of the circuit principle of the present invention.

[0036] Among them, 1 is an insulating sleeve, 101 is a vacuum interrupter cavity, 1011 is a first shed, 102 is an isolating knife switch cavity, 1021 is a second shed, 103 is a lower terminal insulation sleeve, 104 is an outer shell, 105 is a cover, 106 is a separation and closing mechanism cavity, 1061 is an upper terminal insulation sleeve, 1062 is a current transformer cavity, 1063 is a protrusion, 1064 is a connecting plate, 2 is a separation and closing handle, 201 is a handle The connecting rod is 202, the fork is 203, the closing and opening pin is 204, the indicator needle is 3, the isolating knife is 4, the control module is 401, the elastic contact rod is 4011, the baffle is 4012, the spring is 4013, the connecting line is 402, the plug-in part is 4021, the elastic arm is 4022, the block is 4023, the side wall of the plug-in part is 40231, the inner inclined surface is 403, the gap is 404, the spring module is 4041, the spring, and the isolating knife is 5. The gate insulation shield, 501 is the pull ring, 6 is the opening and closing drive shaft, 601 is the upper limit retaining ring, 6011 is the upper pin shaft, 602 is the upper energy storage spring, 603 is the spring retaining ring, 604 is the lower energy storage spring, 605 is the lower limit retaining ring, 6051 is the lower pin shaft, 606 is the overtravel spring, 607 is the overtravel adjustment rod, 6071 is the adjustment rod pin shaft, 608 is the main shaft body, 6081 is the limit long hole, 609 is the limit table, 7 is the current transformer , 8 is a vacuum interrupter, 9 is a permanent magnet mechanism, 901 is a lifting shaft, 902 is an armature, 903 is a permanent magnet, 904 is a closing coil, 905 is an opening coil, 906 is an opening yoke, 907 is a closing yoke, 10 is an elastic clamp, 11 is a fixing frame, 1101 is the bottom surface of the slide groove, 1102 is the side surface of the slide groove, 1103 is a clamping hole, 1104 is a mounting hole, 1105 is an arc, 12 is a contact bolt, and 1201 is a contact groove. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] like Figures 1 to 15As shown, the present invention includes an insulating sleeve 1 and a switch-on / off mechanism, a vacuum interrupter 8 and an isolating knife switch 3 which are sequentially arranged in the insulating sleeve 1 from top to bottom, wherein an upper terminal and a current transformer 7 are provided at the upper end of the insulating sleeve 1, and the switch-on / off mechanism includes a switch-on / off drive shaft 6 and a permanent magnet mechanism 9, a moving contact end rod is provided at the upper end of the vacuum interrupter 8, and a static contact end rod is provided at the lower end, the upper terminal, the current transformer 7 and the moving contact end rod are sequentially connected through a line, and the lower end of the permanent magnet mechanism 9 is fixedly connected to the upper end of the moving contact end rod through the switch-on / off drive shaft 6, the permanent magnet mechanism 9 drives the switch-on / off drive shaft 6 to rise and fall, and further drives the moving contact end rod to rise and fall, the lower end of the insulating sleeve 1 is provided with a lower terminal and an articulated seat connected through a line, and the lower end of the isolating knife switch 3 is hinged on the articulated seat, the upper end of the isolating knife switch 3 is cooperatively connected with the lower end of the static contact end rod, a control module 4 is provided on the outer side of the upper end of the insulating sleeve 1, and as shown Fig.14 As shown, the current transformer 7 and the permanent magnet mechanism 9 are connected to the control module 4 through lines respectively. The electrical connection sequence of the present invention is: upper terminal-current transformer 7-vacuum interrupter 8-isolating knife switch 3-hinged seat-lower terminal, wherein when the moving contact and the static contact in the vacuum interrupter 8 are in contact, the operator can pull the isolating knife switch 3 downward through the insulating rod to realize manual disconnection of the electrical circuit, and when the isolating knife switch 3 is connected to the static contact end rod of the vacuum interrupter 8, the permanent magnet mechanism 9 controls the driving of the opening and closing drive shaft 6 to rise through the control module 4, and then drives the moving contact end rod to rise to separate the moving contact and the static contact in the vacuum interrupter 8, thereby realizing automatic disconnection of the electrical circuit, and the current transformer 7 monitors the switch current load state in real time.

[0039] like Figures 3 to 7 As shown, the opening and closing mechanism includes an opening and closing handle 2 in addition to the opening and closing drive shaft 6 and the permanent magnet mechanism 9. Figures 5-6As shown, the switch-on / off drive shaft 6 includes a main shaft body 608 and an upper limit retaining ring 601, an upper energy storage spring 602, a limit platform 609, a lower energy storage spring 604 and a lower limit retaining ring 605 which are sequentially sleeved on the main shaft body 608 from top to bottom. A limit long hole 6081 is provided at the position where the limit platform 609 is provided on the main shaft body 608. A handle connecting rod 201 is provided on one side of the switch-on / off handle 2, and a shift fork 202 is provided on the handle connecting rod 201. A switch-on / off pin shaft 202 is provided on the shift fork 202. 03, the limit platform 609 is driven to rise and fall by the opening and closing pin shaft 203, and the opening and closing pin shaft 203 passes through the limit long hole 6081, the permanent magnet mechanism 9 includes a lifting shaft 901, and an armature 902 is fixedly arranged on the lifting shaft 901, and an opening yoke 906, an opening coil 905, a permanent magnet 903, a closing coil 904 and a closing yoke 907 are arranged on the outer side of the armature 902 from top to bottom in sequence, the lower end of the lifting shaft 901 is fixedly connected to the upper end of the main shaft body 608, and as Figure 1 As shown, the lower end of the main shaft body 608 is connected to the moving contact end rod of the vacuum arc chamber 8. When the moving contact end rod descends and drives the moving contact at the lower end to contact the static contact at the upper end of the static contact end rod, electrical connection is achieved. When the moving contact rises and separates from the static contact, electrical disconnection is achieved. This is a well-known technology in the art. For example, refer to the working principle of the vacuum arc chamber in the CN219553512U patent.

[0040] like Figures 5-6 As shown, two spring retaining rings 603 are sleeved in the middle of the main shaft body 608, and the two spring retaining rings 603 are respectively arranged on the upper and lower sides of the limiting platform 609. The upper end of the upper energy storage spring 602 abuts against the upper limit retaining ring 601, and the lower end abuts against the spring retaining ring 603 on the corresponding side. The upper end of the lower energy storage spring 604 abuts against the spring retaining ring 603 on the corresponding side, and the lower end abuts against the lower limit retaining ring 605. The upper limit retaining ring 601 is fixedly mounted on the main shaft body 608 through an upper pin shaft 6011, and the lower limit retaining ring 605 is fixedly mounted on the main shaft body 608 through a lower pin shaft 6051. The upper end of the main shaft body 608 is provided with a threaded section which is threadedly fixedly connected to the lower end of the lifting shaft 901, and the lower end of the main shaft body 608 is provided with an overtravel adjustment rod 607 and an overtravel spring 606, wherein the overtravel spring 606 is arranged between the lower limit ring 605 and the upper end of the overtravel adjustment rod 607, and the lower end of the overtravel adjustment rod 607 is provided with a threaded section which is threadedly fixedly connected to the moving contact end rod in the vacuum arc extinguishing chamber 8.

[0041] like Figures 5-6 As shown, in this embodiment, a mounting long hole is provided at the lower end of the main shaft body 608, and the overtravel adjustment rod 607 is installed on the main shaft body 608 through an adjustment rod pin shaft 6071, and the adjustment rod pin shaft 6071 passes through the mounting long hole.

[0042] like Figure 5 As shown, the opening and closing handle 2 is arranged on the outer side of the upper end of the insulating sleeve 1, and the other end of the handle connecting rod 201 passes through the upper end of the insulating sleeve 1 and is connected to an indicator needle 204 to match the state of the opening and closing marking indicating device on the insulating sleeve 1.

[0043] like Figures 8-9 As shown, the insulating bushing 1 of the present invention comprises a switch-opening mechanism cavity 106, a vacuum interrupter cavity 101 and an isolating knife switch cavity 102 which are sequentially arranged from top to bottom, wherein a detachable outer shell 104 is provided on one side of the switch-opening mechanism cavity 106, and a current transformer cavity 1062 is provided on the other side, and an upper wiring terminal insulating sleeve 1061 is provided on the outer side of the current transformer cavity 1062, a detachable cover 105 is provided on the upper end of the switch-opening mechanism cavity 106, and the upper wiring terminal is arranged in the upper wiring terminal insulating sleeve 1061, and the current transformer cavity 1062 is provided with a detachable cover 105. The sensor 7 is arranged in the current transformer cavity 1062, the opening and closing mechanism is arranged in the opening and closing mechanism cavity 106, the outer shell 104 and the cover 105 can be disassembled to install and maintain the opening and closing mechanism, the vacuum interrupter 8 is arranged in the vacuum interrupter cavity 101, and the isolation knife gate cavity 102 is semi-arc-shaped, and one side thereof forms an opening for the isolation knife gate 3 to swing in and out, and the lower end of the isolation knife gate cavity 102 is provided with a lower terminal insulation sleeve 103, and the lower terminal is arranged in the lower terminal insulation sleeve 103. Except for the outer shell 104 and the cover 105, the rest of the insulating sleeve 1 is integrally cast.

[0044] like Figures 8-9 As shown, the outer side of the vacuum interrupter cavity 101 is provided with a first shed 1011 to increase the creepage distance, and the inner and outer sides of the isolation knife switch cavity 102 are provided with a second shed 1021 to increase the creepage distance. Fig. 9 As shown, a raised portion 1063 with a screw hole is provided at the upper end of the opening side of the opening and closing mechanism cavity 106, and a connecting plate 1064 with a screw hole is provided at the lower end. The upper end of the outer shell 104 is fixedly connected to the side of the raised portion 1063 by bolts, and the lower end is fixedly connected to the connecting plate 1064 by bolts.

[0045] And as Fig.10 As shown, a fixing frame 11 is fixedly provided on the outer side of the outer shell 104, and the control module 4 is detachably mounted on the fixing frame 11. The current transformer 7, the opening and closing mechanism and other structures of the present invention are mainly concentrated on the upper end of the insulating sleeve 1. In order to facilitate control and beautiful product appearance, the control module 4 is also arranged on the upper end of the insulating sleeve 1.

[0046] like Figures 10 to 14As shown, the fixing frame 11 is installed on the outer shell 104, and the fixing frame 11 is concave and has slide grooves on both sides inside, and the lower end of the slide groove side 1102 of the slide groove is provided with a card hole 1103, and the control module 4 is provided with a plug-in part 402 on both sides, and an elastic arm 4021 is provided on the lower side of the plug-in part 402, and a card block 4022 is provided at the lower end of the elastic arm 4021. The control module 4 is inserted from the open side of the fixing frame 11, and after insertion, the plug-in part 402 slides along the corresponding side slide groove until the card block 4022 is inserted into the card hole 1103 on the corresponding side to realize the fixed connection between the control module 4 and the fixing frame 11.

[0047] like Figures 11-12 As shown, the slide groove includes a slide groove bottom surface 1101 and a slide groove side surface 1102 which are perpendicular to each other, and when the control module 4 is inserted into the fixing frame 11, the bottom surface of the plug-in portion 402 moves along the slide groove bottom surface 1101, and the plug-in portion side wall 4023 outside the plug-in portion 402 moves along the slide groove side surface 1102. After the control module 4 is moved into place, in addition to using the lower end block 4022 to cooperate with the card hole 1103 to achieve height limitation, the bottom surface of the plug-in portion 402 is against the slide groove bottom surface 1101. At the same time, mounting holes 1104 are provided on both sides of the fixing frame 11 and are fixed to the outer shell 104 by bolts. In this way, the outer surface of the outer shell 104 and the slide groove bottom surface 1101 cooperate to achieve the limitation of the plug-in portion 402 along the central axis direction of the control module 4.

[0048] like Figures 11-12 As shown, the upper end of the plug-in side wall 4023 is provided with an inner inclined surface 40231, and the lower end of the slide groove bottom surface 1101 is an arc 1105, which can facilitate the upward insertion of the control module 4. Fig.12 As shown, a gap 403 is formed between the elastic arm 4021 and the main body of the control module 4 , so that when the control module 4 is inserted into the fixing frame 11 , the elastic arm 4021 will perform adaptive inward swing deformation until the clamping block 4022 is embedded in the clamping hole 1103 .

[0049] The front end of the control module 4 of the present invention is provided with an elastic contact element to realize electrical connection with the electrical circuit in the outer shell 104, and the present invention can select different elastic contact element structures according to actual needs.

[0050] In one embodiment of the present invention, Figure 8 As shown, the outer side of the outer shell 104 is provided with an electrical jack, such as Figures 10 to 13 As shown, the elastic contact element at the front end of the control module 4 is an elastic contact rod 401, which cooperates with the electrical socket to facilitate installation. Fig.13As shown, in this embodiment, the part of the elastic touch rod 401 located in the shell of the control module 4 is provided with a baffle 4011 and a spring 4012, and the spring 4012 is arranged between the baffle 4011 and the adjacent module group, the module group is provided with a slot for the rear end of the elastic touch rod 401 to be inserted, and the rear end of the elastic touch rod 401 is provided with a connecting line 4013 to be electrically connected to the corresponding contact on the module group, and the connecting line 4013 needs to have a sufficient length to ensure the telescopic movement of the elastic touch rod 401. In the present invention, the fixing frame 11 can be fixed on the outer shell 104 first, and then the control module 4 is inserted into the fixing frame 11 to achieve fixation, and in the process of the control module 4 being inserted upward into the fixing frame 11, the elastic touch rod 401 first shrinks and retreats, and when the control module 4 is inserted into place, the elastic touch rod 401 can automatically spring into the electrical jack 301 on the outer shell 104 under the action of the spring 4012.

[0051] In another embodiment of the present invention, Fig.14 As shown, the outer shell 104 is provided with a contact bolt 12 connected to the electrical circuit thereon, and the nut of the contact bolt 12 is provided with a contact groove 1201. The elastic contact element at the front end of the control module 4 is a spring 4041, which is provided on a spring module 404 and installed on the control module 4 through the spring module 404. The spring 4041 is made of metal. When the control module 4 is inserted upward into the fixing frame 11, the spring 4041 is first compressed by the outer surface of the outer shell 104, and when the spring 4041 enters the contact groove 1201, it will automatically pop up and contact the bottom of the contact groove 1201 to achieve electrical connection. At the same time, the spring 4041 has a certain elasticity and it is also easier to move it into or out of the contact groove 1201. In addition, when this embodiment is used, the spring piece 4041 can also directly contact the nut of the contact bolt 12 to achieve electrical connection, or the cooperation between the spring piece 4041 and the contact bolt 12 can also select other appropriate structural methods according to specific circumstances.

[0052] like Figure 3 As shown, an elastic clamp 10 is provided at the lower end of the static contact end rod of the vacuum arc extinguishing chamber 8, and the distance between the two elastic clamps 10 is smaller than the thickness of the blade of the isolation knife switch 3, so that when the isolation knife switch 3 is lifted, its upper end can be inserted between the two elastic clamps 10 and clamped and fixed by the elastic clamps 10. In addition, a corresponding self-locking structure can be provided on the isolation knife switch 3 as needed. This is a well-known technology in the art. For example, the detachable line isolation knife switch in the authorized patent CN205028833U can be adopted.

[0053] like Figure 2 and Figure 5As shown, the indicator needle 204 at the other end of the handle connecting rod 201 cooperates with the opening and closing mark on the outer shell 104 to indicate the status of the device.

[0054] like Figure 1 As shown, an isolation knife gate insulating shield 5 is provided on the outside of the isolation knife gate 3, and a pull ring 501 is provided on the outside of the isolation knife gate insulating shield 5. When the isolation knife gate 3 is lifted, the isolation knife gate cavity 102 of the insulating sleeve 1 and the isolation knife gate insulating shield 5 form a relatively complete insulating protection cavity to achieve insulation protection for the isolation knife gate 3. In addition, the operator can pull the pull ring 501 through the insulating rod to drive the isolation knife gate 3 to lift or fall.

[0055] like Fig.15 As shown, in this embodiment, the control module 4 is provided with a solar panel, a battery, a central processing unit and a wireless communication circuit, wherein the solar panel converts solar energy into electrical energy and transmits it to the battery for storage, the battery supplies power to the central processing unit, the wireless communication circuit and other components, the opening coil 905 and the closing coil 904 in the permanent magnetic mechanism 9 are controlled by the central processing unit to switch on and off, the monitoring signal of the current transformer 7 is also uploaded to the central processing unit, if equipped with a remote control, the remote control also controls the action of the relevant mechanism through the central processing unit, in addition, the data of the central processing unit is transmitted to the wireless communication circuit, the wireless communication circuit realizes data transmission with the remote collection terminal, the computer terminal, etc., and then realizes remote control. If the solar panel is not used for power supply, the present invention can also use the current transformer 7 to connect with the control module 4 to realize power supply.

[0056] The working principle of the present invention is:

[0057] The electrical connection sequence of the present invention is: upper wiring terminal - current transformer 7 - vacuum interrupter 8 - isolating switch 3 - hinged seat - lower wiring terminal.

[0058] The present invention can realize automatic operation only by permanent magnet mechanism 9, wherein Figure 7As shown, the armature 902 is held at a height by the magnetic attraction of the permanent magnet 903, and at this time, the isolating knife switch 3 needs to be lifted and in a closed state. When the vacuum interrupter 8 is closed, the closing coil 904 is energized, and the direction of the electromagnetic field generated by the current is opposite to that of the closing magnetic yoke 907. At this time, the armature 902 is driven to drive the lifting shaft 901 to move downward. The closing coil 904 is only energized for a short set time, as long as the lifting shaft 901 can be ensured to be in place, and then the power is cut off. After the power is cut off, the armature 902 is still held in position by the magnetic force of the permanent magnet 903, and the lifting shaft 901 moves downward by driving the vacuum through the main shaft body 608. The moving contact on the upper side of the arc extinguishing chamber 8 moves down and contacts with the static contact to achieve electrical connection. When the vacuum arc extinguishing chamber 8 is opened, the opening coil 905 is energized to generate magnetic force, and the direction of the electromagnetic field generated by the current is opposite to the opening yoke 906. At this time, the armature 902 is driven to drive the lifting shaft 901 to move up. Similarly, the opening coil 905 is only energized for a short time and then cut off. In this way, after the lifting shaft 901 rises to its position, the armature 902 is still held in position by the magnetic force of the permanent magnet 903, and the lifting shaft 901 moves up and drives the moving contact on the upper side of the vacuum arc extinguishing chamber 8 to separate from the static contact on the lower side through the main shaft body 608 to disconnect the electrical connection. The permanent magnet mechanism 9 is a well-known technology in the art, for example, the bistable permanent magnet mechanism in the CN 117650026 B patent can be used.

[0059] The present invention can also be operated manually. At this time, the vacuum interrupter 8 needs to maintain a closed state in which the moving contact and the static contact are in contact. Then the operator pulls the isolating switch 3 downward through the insulating pull rod to achieve electrical disconnection, and pushes the isolating switch 3 upward to re-achieve electrical connection.

[0060] The present invention can also realize manual operation when the permanent magnet mechanism 9 fails. At this time, the isolation knife switch 3 needs to be lifted and is in a closed state. When the closing coil 904 and the opening coil 905 in the permanent magnet mechanism 9 cannot drive the main shaft body 608 of the opening and closing drive shaft 6 to move up and down due to power failure or other reasons, or in other cases where manual operation is required:

[0061] 1. When the lifting shaft 901 in the permanent magnet mechanism 9 is in the opening position, the operator uses the insulating rod to pull down the opening and closing handle 2, and the opening and closing handle 2 drives the opening and closing pin shaft 203 to move downward through the handle connecting rod 201 and the shift fork 202. The downward movement of the opening and closing pin shaft 203 drives the limit platform 609 to move downward to compress the lower energy storage spring 604 to store energy. When the opening and closing pin shaft 203 abuts against the lower end of the limit long hole 6081, the energy storage of the lower energy storage spring 604 ends, and then the opening and closing handle 2 is continuously pulled down to drive the main shaft body 608 to move downward to realize the closing of the vacuum interrupter 8, wherein The lower end of the main shaft body 608 drives the moving contact in the vacuum arc extinguishing chamber 8 to move downward and contact with the static contact, while the upper end of the main shaft body 608 drives the lifting shaft 901 and the armature 902 in the permanent magnet mechanism 9 to move downward to the closing position. In this way, when the operator releases the opening and closing handle 2, the lifting shaft 901 together with the main shaft body 608 on the lower side can still be maintained in the closing position under the magnetic force of the permanent magnet 903 (adsorbing the armature 902). At the same time, the limit platform 609 drives the opening and closing pin shaft 203 to rise and return to its original position under the drive of the lower energy storage spring 604, thereby driving the opening and closing handle 2 to return to its original position.

[0062] 2. When the lifting shaft 901 in the permanent magnet mechanism 9 is in the closing position, the operator uses the insulating rod to push up the opening and closing handle 2, thereby moving the opening and closing pin shaft 203 upward to drive the limit platform 609 to compress the upper energy storage spring 602. When the opening and closing pin shaft 203 abuts against the uppermost end of the limit long hole 6081, continuing to push up the opening and closing handle 2 will drive the main shaft body 608 to move upward. At this time, the main shaft body 608 drives the moving contact in the vacuum arc chamber 8 at the lower end to move up and separate from the static contact to achieve opening. At the same time, the main shaft body 608 drives the upper lifting shaft 901 to drive the armature 902 to rise to the opening position. In this way, after releasing the opening and closing handle 2, the lifting shaft 901 together with the main shaft body 608 on the lower side can be kept in the opening position by the magnetic force of the permanent magnet 903, and the opening and closing handle 2 is driven to return to its original position by the upper energy storage spring 602.

[0063] In addition, a floating overtravel adjustment rod 607 and an overtravel spring 606 are provided at the lower end of the main shaft body 608. The overtravel adjustment rod 607 and the overtravel spring 606 are used to ensure the lifting range of the main shaft body 608, so that it can not only ensure that the moving contact at the lower end is in contact or separation with the static contact, but also ensure that the lifting shaft 901 at the upper end together with the armature 902 can move to the opening or closing position, thereby not affecting the subsequent automatic control of the permanent magnet mechanism 9. The adjustment rod pin 6071 at the upper end of the overtravel adjustment rod 607 can float within a certain range along the mounting long hole at the lower end of the main shaft body 608. At the same time, the lower limit ring 605 cooperates with the compression overtravel spring 606 to ensure that the main shaft body 608 can be reset to the set position.

Claims

1. An outdoor pole mounted intelligent protection switch, characterized in that: The invention comprises an insulating sleeve (1) and a switch-on / off mechanism, a vacuum interrupter (8) and an isolating knife switch (3) arranged in the insulating sleeve (1); an upper wiring terminal and a current transformer (7) are arranged at the upper end of the insulating sleeve (1); the switch-on / off mechanism comprises a switch-on / off drive shaft (6) and a permanent magnet mechanism (9); a moving contact end rod is arranged at the upper end of the vacuum interrupter (8) and a stationary contact end rod is arranged at the lower end; the upper wiring terminal, the current transformer (7) and the moving contact end rod are connected in sequence; and the switch-on / off drive shaft (6) is connected to the upper end of the vacuum interrupter (8). ) is driven to rise and fall by a permanent magnet mechanism (9) and the lower end is fixedly connected to the upper end of the moving contact end rod, the lower end of the insulating sleeve (1) is provided with a lower wiring terminal and an articulated seat connected by a line, and the lower end of the isolating knife switch (3) is hinged on the articulated seat, the upper end of the isolating knife switch (3) is cooperatively connected to the lower end of the static contact end rod, a control module (4) is provided on the outer side of the upper end of the insulating sleeve (1), and the current transformer (7) and the permanent magnet mechanism (9) are respectively connected to the control module (4) by lines; The switch-on / off drive shaft (6) comprises a main shaft body (608), and an upper limit retaining ring (601), an upper energy storage spring (602), a limit platform (609), a lower energy storage spring (604) and a lower limit retaining ring (605) arranged on the main shaft body (608), and a limit long hole (6081) is also arranged at the position where the limit platform (609) is arranged on the main shaft body (608), the switch-on / off mechanism comprises a switch-on / off handle (2), and a switch-on / off pin shaft (203) is arranged on one side of the switch-on / off handle (2), the limit platform (609) is driven to rise and fall by the switch-on / off pin shaft (203), and the switch-on / off pin shaft (203) passes through the limit long hole (6081); The permanent magnet mechanism (9) comprises a lifting shaft (901), and an armature (902) is fixedly arranged on the lifting shaft (901), and an opening yoke (906), an opening coil (905), a permanent magnet (903), a closing coil (904) and a closing yoke (907) are arranged on the outer side of the armature (902) in order from top to bottom, and the lower end of the lifting shaft (901) is fixedly connected to the upper end of the opening and closing drive shaft (6); A handle connecting rod (201) is provided on one side of the opening and closing handle (2), and a shift fork (202) is provided on the handle connecting rod (201), and an opening and closing pin shaft (203) is provided on the shift fork (202).

2. The outdoor pole-mounted intelligent protection switch according to claim 1 is characterized in that: An overtravel adjustment rod (607) and an overtravel spring (606) are provided at the lower end of the main shaft body (608), and the overtravel spring (606) is provided between the lower limit retaining ring (605) and the upper end of the overtravel adjustment rod (607), and the lower end of the overtravel adjustment rod (607) is threadedly fixedly connected to the moving contact end rod in the vacuum interrupter (8).

3. The outdoor pole-mounted intelligent protection switch according to claim 1 is characterized in that: The insulating bushing (1) comprises a switch-on / off mechanism cavity (106), a vacuum arc extinguishing chamber cavity (101) and an isolating knife switch cavity (102) which are arranged in sequence from top to bottom, wherein a detachable outer shell (104) is provided on one side of the switch-on / off mechanism cavity (106), and a current transformer cavity (1062) is provided on the other side, and an opening is formed on one side of the isolating knife switch cavity (102) for the isolating knife switch (3) to swing in and out.

4. The outdoor pole mounted intelligent protection switch according to claim 1 or 3, characterized in that: An isolating knife switch insulating shield (5) is provided on the outside of the isolating knife switch (3), and a pull ring (501) is provided on the outside of the isolating knife switch insulating shield (5).

5. The outdoor pole mounted intelligent protection switch according to claim 3 is characterized in that: A fixing frame (11) is fixedly arranged on the outer side of the outer shell (104), and the fixing frame (11) is concave and has slide grooves on both sides thereof, and a clamping hole (1103) is arranged at the lower end of the slide groove side surface (1102) of the slide groove, and a plug-in portion (402) is arranged on both sides of the control module (4), and an elastic arm (4021) is arranged on the lower side of the plug-in portion (402), and a clamping block (4022) is arranged at the lower end of the elastic arm (4021), and the control module (4) is inserted from the opening side of the fixing frame (11), and after the insertion, the plug-in portion (402) slides along the corresponding side slide groove until the clamping block (4022) is clamped into the clamping hole (1103) on the corresponding side.

6. The outdoor pole-mounted intelligent protection switch according to claim 5 is characterized in that: The slide groove comprises a slide groove bottom surface (1101) and a slide groove side surface (1102) which are perpendicular to each other, and when the control module (4) is inserted into the fixing frame (11), the bottom surface of the plug-in portion (402) moves along the slide groove bottom surface (1101), and the plug-in portion side wall (4023) outside the plug-in portion (402) moves along the slide groove side surface (1102), and the front end of the control module (4) is provided with an elastic contact element which realizes electrical connection with the electrical circuit in the outer shell (104).

7. The outdoor pole-mounted intelligent protection switch according to claim 1 is characterized in that: The control module (4) is provided with a solar panel, a battery, a central processing unit and a wireless communication circuit, wherein the solar panel is connected to the battery via a line, the battery is connected to the central processing unit and the wireless communication circuit via a line, and the permanent magnet mechanism (9) and the current transformer (7) are respectively connected to the central processing unit via a line.

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