A pole-mounted vacuum circuit breaker with built-in isolation visible break

Abstract

The present invention relates to a pole-mounted vacuum circuit breaker with a built-in isolation visual break, comprising an operating box, at least one deep fusion pole, a circuit breaker operating mechanism, a display terminal and at least one visual monitoring module, wherein a vacuum arc extinguishing chamber and a switch chamber are arranged inside the deep fusion pole, an isolation break is arranged in the switch chamber, and an isolation switch is arranged at the isolation break; a monitoring through hole is arranged on the outer wall of the switch chamber, and the visual monitoring module comprises a fixing seat, transparent glass, a flange, an LED light board, a camera and a protective cover, and a receiving groove is arranged on the rear end surface of the fixing seat; the transparent glass is installed in the receiving groove and covers the observation hole; the lens and the LED light board of the camera are both facing the transparent glass; the camera is electrically connected to the corresponding signal input terminal of the display terminal. The present invention can visually monitor the state of its built-in isolation break, so as to accurately observe whether the isolation switch port is closed or opened, and can improve the safety and reliability of operation.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment, and in particular to a pole-mounted vacuum circuit breaker with a built-in isolating visible break. Background Art

[0002] A vacuum circuit breaker is a switch device that can close, carry and disconnect the current under normal circuit conditions and close, carry and disconnect the current under abnormal circuit conditions within a specified time; an isolating switch can disconnect the no-load circuit to protect the corresponding personnel during maintenance; the two are generally used together so that the circuit breaker can be inspected and repaired after the circuit is disconnected by the isolating switch. The vacuum circuit breaker should be inspected at least once a year to check whether the fasteners are loose. When the circuit breaker is placed for a long time or rarely operated, the moving parts may be blocked. For places with frequent operations, especially built-in isolating switches, check whether the contacts are in place, pay special attention to the wear of the contacts, and the temperature during abnormal operation. It cannot be used beyond the allowable operating temperature of the isolating switch contacts.

[0003] The Chinese invention patent with the announcement number CN116469724A discloses a vacuum circuit breaker with a built-in isolating break, including a circuit breaker body capable of controlling a circuit, the circuit breaker body is connected to a switch chamber with a vacuum inside, a static contact for connecting an external circuit is fixedly connected in the switch chamber, a moving contact that can move to contact or move away from the static contact is provided in the switch chamber, the circuit breaker body and the switch chamber are connected to a control box, and a switch transmission device for controlling the movement of the moving contact is provided in the control box. The moving contact and the static contact are both arranged in the vacuum switch chamber, so that even in the case of a poor external environment, the circuit can be effectively connected between the moving contact and the static contact, thereby improving the service life of the overall device. However, the structure of this vacuum circuit breaker with a built-in isolating break is a completely sealed form, and it is impossible to accurately see whether the isolating switch port is closed before power is supplied, and it is impossible to see whether the isolating switch is opened during power outage maintenance, which easily leads to the risk of misoperation. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a pole-mounted vacuum circuit breaker with a built-in isolation visual break, which can visually monitor the state of its built-in isolation break, so as to accurately observe whether the isolation switch port is closed or opened, which is convenient for inspection and maintenance of the vacuum circuit breaker, and can improve the safety and reliability of operation. The adopted technical solution is as follows:

[0005] A pole-mounted vacuum circuit breaker with a built-in isolating visual break, comprising an operating box, at least one deeply fused pole and a circuit breaker operating mechanism for controlling the opening and closing actions of the circuit breaker, the deeply fused pole being installed on the upper side of the operating box, the circuit breaker operating mechanism being installed inside the operating box, each deeply fused pole being provided with a vacuum arc extinguishing chamber and a switch chamber inside, an isolating break being provided in the switch chamber, and an isolating switch being provided at the isolating break, characterized in that: the pole-mounted vacuum circuit breaker also comprises a display terminal and at least one visual monitoring module, the number of the visual monitoring modules is the same as that of the deeply fused poles and they correspond one to one, a monitoring through hole is provided on the outer wall of the switch chamber of the deeply fused pole, the monitoring through hole is directly opposite to the isolating break, the visual monitoring module comprises a fixing seat, transparent glass, a flange, LED light board, camera and protective cover, the fixing seat is installed on the outer wall of the switch room of the corresponding deep fusion pole, the front end face of the fixing seat is provided with an observation hole aligned with the monitoring through hole, and the rear end face of the fixing seat is provided with a receiving groove, the bottom of the receiving groove is communicated with the observation hole; transparent glass is installed in the receiving groove and covers the observation hole; the flange is installed on the fixing seat and is located on the rear side of the fixing seat, and the center of the flange has an opening; the camera is installed on the flange, the LED light board is annular and is mounted on the lens of the camera, the lens of the camera and the LED light board are both in the opening and facing the transparent glass; the protective cover is installed on the flange and is located on the rear side of the flange, and the protective cover covers the camera; the camera of the visual monitoring module is electrically connected to the corresponding signal input terminal of the display terminal.

[0006] The front and rear are: along the direction in which the visual monitoring module is installed on the outer wall of the switch room, the side close to the switch room is the front, and the side away from the switch room is the rear.

[0007] In the structure of the above-mentioned visual monitoring module, transparent glass is used to cover the observation hole and the monitoring through-hole of the switch room, which can ensure that the internal sealing of the switch room of the deep fusion pole is not affected and provide an observation angle for the camera lens; the light emitted by each LED lamp on the LED light board can pass through the transparent glass, the observation hole on the fixed seat, and the monitoring through-hole on the switch room in turn to enter the switch room of the deep fusion pole, providing lighting conditions for the camera's shooting; the camera lens faces the transparent glass, and the status of the built-in isolating switch of the deep fusion pole can be captured in real time through the observation hole and the monitoring through-hole, and the image can be transmitted to the lower or remote display terminal; the protective cover is used to protect the camera and facilitate wiring.

[0008] In the structure of the above-mentioned deep fusion pole, the switch room is arranged inside the deep fusion pole, and the isolating switch is arranged at the isolating fracture in the switch room, so that even when the external environment is poor, the circuit can be effectively connected between the isolating switches, which can improve the stability and reliability of the pole-mounted vacuum circuit breaker during operation and increase the service life of the pole-mounted vacuum circuit breaker; when inspecting and maintaining the pole-mounted vacuum circuit breaker, each visual monitoring module can respectively perform real-time visual monitoring of the built-in isolating fracture in the switch room through the corresponding monitoring through hole, and transmit the image to the display terminal, so that the staff can accurately observe whether the isolating switch port is closed or opened through the display terminal, to ensure reliable contact of the contacts when power is supplied, and there is a visible isolating fracture during power outage operations, which can effectively prevent the risk of misoperation, thereby improving the safety and reliability of the staff's operation.

[0009] The fixing base can be made of insulating material, such as outdoor epoxy resin or nylon PA66. The protective cover can be made of metal material, such as stainless steel or iron, thereby improving the safety of use.

[0010] As a preferred solution of the present invention, the transparent glass is tempered glass.

[0011] As a preferred solution of the present invention, the lens of the camera is a fixed-focus lens, thereby ensuring the clarity of the image captured by the camera.

[0012] As a preferred solution of the present invention, a plurality of LED lamp beads evenly distributed in a ring shape are arranged on the front side of the LED lamp board, and each LED lamp bead emits light toward the transparent glass, thereby making the light emission of the LED lamp board more uniform.

[0013] As another preferred solution of the present invention, a ring-shaped LED light tube is provided on the front side of the LED light board, and the ring-shaped LED light tube emits light toward the transparent glass, thereby making the light emission of the LED light board more uniform.

[0014] As a preferred solution of the present invention, an annular sealing groove is provided on the front side of the fixing seat, the annular sealing groove is located at the outer periphery of the receiving groove, and a first sealing ring is provided in the annular sealing groove. The first sealing ring is used to completely seal the gap between the front side of the fixing seat and the outer side wall of the switch chamber, thereby ensuring the airtightness of the switch chamber during operation.

[0015] As a further preferred solution of the present invention, a mounting groove is provided on the outer wall of the switch chamber, the bottom of the mounting groove is provided with the monitoring through hole, and the fixing seat is installed in the mounting groove, thereby making the matching between the fixing seat and the outer wall of the switch chamber more compact.

[0016] As a preferred solution of the present invention, a second sealing ring is provided between the front side of the transparent glass and the bottom of the receiving groove of the fixing seat; and a third sealing ring is provided between the rear side of the transparent glass and the front end surface of the flange. The second sealing ring and the third sealing ring are used to completely seal the gap between the outer periphery of the transparent glass and the groove wall of the receiving groove, thereby providing two sealing rings between the transparent glass and the groove wall of the receiving groove, thereby further ensuring the airtightness of the switch room during operation.

[0017] As a preferred solution of the present invention, the camera is mounted on the flange through a fixing bracket, the fixing bracket is U-shaped, the two ends of the fixing bracket are detachably connected to the flange, and the camera is clamped and fixed by the fixing bracket and the fixing seat. This makes it easy to disassemble and assemble the camera, and to maintain and replace it, so as to prevent the entire vacuum circuit breaker from being replaced if the camera is damaged.

[0018] As a preferred solution of the present invention, the flange can be detachably mounted on the fixing seat, and the protective cover can be detachably mounted on the flange.

[0019] As a further preferred embodiment of the present invention, the protective cover is provided with a plurality of first through holes, the flange is provided with a plurality of second through holes, the number of the second through holes is the same as the first through holes and the positions are aligned one by one, the fixing seat is provided with a plurality of locking screw holes, the number of the locking screw holes is the same as the second through holes and the positions are aligned one by one; the visual monitoring module also includes a plurality of fixing bolts, the screw rods of each fixing bolt sequentially pass through the corresponding first through hole and the second through hole and are threadedly connected with the corresponding locking screw holes. With this structure, the screw rods of each fixing bolt sequentially pass through the corresponding first through hole and the second through hole and are threadedly connected with the corresponding locking screw holes, thereby realizing a quick connection between the fixing seat, the flange and the protective cover, and the operation is easier.

[0020] The above-mentioned pole-mounted vacuum circuit breaker generally adopts a three-phase pillar structure. As a preferred solution of the present invention, the number of the deep fusion poles is three, and the three deep fusion poles are sequentially arranged on the upper side of the operation box from left to right.

[0021] As a preferred embodiment of the present invention, the deep fusion pole includes a shell, the vacuum arc chamber, the switch chamber, the disconnector, a first insulating pull rod assembly and a second insulating pull rod assembly, the vacuum arc chamber is arranged in the upper part of the shell, the static end of the vacuum arc chamber is arranged upward and extends from the top of the shell, the static end of the vacuum arc chamber is provided with an incoming line terminal, and the moving end of the vacuum arc chamber is arranged downward; the disconnector includes an isolating static contact and an isolating moving contact, the isolating static contact includes a conductive rod and a static contact, the conductive rod is installed in the shell, the first end of the conductive rod extends to the outside of the shell, and the conductive rod An outlet terminal is installed on the first end of the switch, and the static contact is installed on the second end of the conductive rod and is located at the isolating fracture; the isolating moving contact includes a moving contact and a conductive contact rod, the moving contact is installed at the lower end of the switch chamber, the middle section of the conductive contact rod can be lifted and installed on the moving contact, and the upper end of the conductive contact rod is directly below the static contact and cooperates with the static contact; the upper end of the first insulating pull rod assembly and the upper end of the second insulating pull rod assembly are respectively connected to the moving end of the vacuum arc extinguishing chamber and the lower end of the conductive contact rod, and the lower end of the first insulating pull rod assembly and the lower end of the second insulating pull rod assembly are respectively connected to the corresponding adjustment ends of the circuit breaker operating mechanism. During operation, the circuit breaker operating mechanism can drive the first insulating pull rod assembly to rise or fall, thereby driving the moving end of the vacuum interrupter to move upward or downward until the moving end of the vacuum interrupter contacts with its static end (open distance) or the moving and static contacts are pulled apart by a certain distance (open distance), thereby controlling the column-mounted vacuum circuit breaker to complete the closing or opening action; the circuit breaker operating mechanism can also drive the conductive contact rod to rise or fall through the second insulating pull rod assembly, thereby controlling whether the upper end of the conductive contact rod contacts the static contact, thereby effectively connecting the circuit between the isolating static contact and the isolating moving contact in the case of poor external environment, thereby improving the service life of the column-mounted vacuum circuit breaker.

[0022] As a further preferred embodiment of the present invention, the deep fusion pole also includes a connecting busbar and a soft connection. The connecting busbar is installed in the outer shell, and the first end of the connecting busbar is electrically connected to the moving contact; the two ends of the soft connection are respectively electrically connected to the moving end of the vacuum arc chamber and the second end of the connecting busbar, and the incoming terminal, vacuum arc chamber, soft connection, connecting busbar, isolating moving contact, isolating static contact, and outgoing terminal are electrically connected in sequence to form a conductive circuit.

[0023] The above-mentioned circuit breaker operating mechanism can be composed of electric energy storage, electric closing, and electric opening, and has the functions of electric opening and closing and emergency manual opening. The above-mentioned circuit breaker operating mechanism can adopt the existing technology, and its structure and principle can refer to the Chinese invention patent specification with the authorization announcement number "CN213424883U" and the patent name "A circuit breaker operating mechanism". The adjustment output end of the above-mentioned circuit breaker operating mechanism can also refer to the structure and principle of the "switch transmission device" in the Chinese invention patent specification with the application publication number CN116469724A and the patent name "A vacuum circuit breaker with built-in isolation break".

[0024] The structure and working principle of the first insulating pull rod assembly and the second insulating pull rod assembly can refer to the Chinese invention patent specification with publication number CN117690752A. Specifically, the first insulating pull rod assembly and the second insulating pull rod assembly both include an insulating rod, an upper pull rod, a lower pull rod, and a pull rod spring. The upper pull rod is fixedly connected to the moving contact and moves synchronously. The upper end of the lower pull rod is fixedly connected to the lower end of the insulating rod; a concave hole is provided on the upper part of the insulating rod, and the pull rod spring is located inside the concave hole. A circular cover is provided on the upper part of the concave hole, and the upper pull rod passes through the circular cover; a circular convex rib is formed on the lower section of the upper pull rod, and the circular convex rib is located between the circular cover and the pull rod spring. The upper end of the pull rod spring touches the lower end surface of the circular convex rib, and the lower end of the pull rod spring touches the bottom of the concave hole; the insulating rod and the upper pull rod are located inside the pole, and the lower pull rod is connected to the corresponding adjustment output end of the circuit breaker operating mechanism.

[0025] As a further preferred embodiment of the present invention, each of the deep fusion poles also includes a current transformer and a secondary lead wire, the current transformer is installed in the housing and is located outside the conductive rod, and the upper end of the secondary lead wire is electrically connected to the current transformer; the pole-mounted vacuum circuit breaker also includes a collector, an aviation socket and a feeder terminal FTU, the collector and the aviation socket are both arranged in the operating box, the lower end of the secondary lead wire of the deep fusion pole and the outlet interface of the voltage sensor are electrically connected to the collector, the collector is connected to the input end of the feeder terminal FTU through the aviation socket, and the regulating output end of the circuit breaker operating mechanism is connected to the output end of the feeder terminal FTU. When working, the collector is used to collect the current and voltage signals of each deep fusion pole, and output them to the feeder terminal FTU through the aviation socket, and then the feeder terminal FTU remotely controls the opening and closing of the pole-mounted vacuum circuit breaker through the circuit breaker operating mechanism, so that any three deep fusion poles can be interchanged, thereby realizing automatic control of the opening and closing action of the circuit breaker, and improving the stability and reliability of the outdoor high-voltage AC vacuum circuit breaker when working.

[0026] The above-mentioned feeder terminal FTU shall have network communication function and serial communication function. The Ethernet port and serial port shall meet the design requirements of this document to ensure fast, accurate and reliable communication of the terminal; the above-mentioned feeder terminal FTU can be equipped with a control terminal interface, which is used in automated power distribution networks and unmanned substations. Remote data interaction can be carried out through a wireless communication module, and the wireless communication module shall meet the design requirements of this document; the remote signaling, telemetry, remote control, and electric energy data transmission protocol of the feeder terminal FTU and the master station shall adopt the 104 / 101 communication protocol that complies with the DL / T 634 standard; the feeder terminal FTU adopts a platform-based hardware design and adapts to the edge computing architecture; the feeder terminal FTU shall support a security chip with an embedded national secret algorithm to achieve integrity, confidentiality, and availability protection of data interaction between the terminal and the master station, and to achieve confidentiality and integrity protection of locally stored data. The security chip shall meet the design requirements of this document; when working normally, the power consumption of the feeder terminal FTU shall not exceed 30VA (including line loss module, wireless communication module in non-communication state, excluding backup power supply and other communication equipment).

[0027] As a further preferred solution of the present invention, the display terminal uses a display screen, which is installed on the bottom surface of the feeder terminal FTU. The display screen is arranged on the bottom surface of the feeder terminal FTU, so that it can be clearly observed by the naked eye, and it can also improve the real-time observation of the isolation fracture by a mobile phone or a notebook terminal.

[0028] As a further preferred embodiment of the present invention, the shell is an epoxy resin shell; the visual monitoring module is covered by the corresponding epoxy resin shell. The epoxy resin shell of the deep fusion pole can be made by APG epoxy resin automatic pressure gel technology, and the mold is cast with epoxy resin as the insulating medium to encapsulate the vacuum arc chamber, switch chamber, and disconnector into one body, which not only ensures the insulation performance requirements, but also ensures that the thermal expansion and contraction of the pole epoxy resin will not damage the epoxy resin shell. In this way, the overall structure of the deep fusion pole can be compact, the total product mass is small, and the cost is saved while meeting the necessary mechanical and electrical properties of the product, thereby improving the electrical and mechanical safety and reliability of the deep fusion pole.

[0029] As a further preferred embodiment of the present invention, the outer side of the epoxy resin shell is coated with a silicone layer, which can make the epoxy resin shell resistant to aging and soft, thereby preventing the deep fusion pole from being damaged by bumps.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] This pole-mounted vacuum circuit breaker enables workers to accurately observe the status of its built-in isolating fracture, facilitates inspection and maintenance operations, and effectively prevents the risk of misoperation, thereby improving the safety and reliability of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a pole-mounted vacuum circuit breaker according to a first embodiment of a preferred implementation scheme of the present invention.

[0033] Figure 2 yes Figure 1 The schematic diagram of the structure of the deep integration of pole and visual monitoring module in the pole-mounted vacuum circuit breaker is shown.

[0034] Figure 3 yes Figure 2 Stereoscopic diagram.

[0035] Figure 4 yes Figure 2 Enlarged view of point A.

[0036] Figure 5 yes Figure 2 An exploded view of the visual monitoring module is shown.

[0037] Figure 6 It is a schematic diagram of the structure of the deep fusion pole and visual monitoring module in Example 2 of the preferred implementation mode of the present invention.

[0038] Figure 7 yes Figure 6 Stereoscopic diagram. DETAILED DESCRIPTION

[0039] Embodiment 1

[0040] like Figure 1-Figure 5As shown, this pole-mounted vacuum circuit breaker with built-in isolating visual break includes an operating box 1, multiple deep fusion poles 2, multiple visual monitoring modules 3, a display terminal 4 and a circuit breaker operating mechanism 5; each deep fusion pole 2 is installed on the upper side of the operating box 1, and the circuit breaker operating mechanism 5 is installed inside the operating box 1. Each deep fusion pole 2 is provided with a vacuum arc chamber 21 and a switch chamber 22, and the switch chamber 22 is provided with an isolating break 220, and an isolating switch 23 is provided at the isolating break 220; the number of visual monitoring modules 3 is the same as that of the deep fusion poles 2 and they correspond one to one. A monitoring through hole 2201 is provided on the outer wall of the switch chamber 22 of the deep fusion pole 2, and the monitoring through hole 2201 is directly opposite to the isolating break 220. The visual monitoring module 3 includes a fixing seat 31, a transparent glass 32, a flange 33, an LED light board 34, a camera 35 and a protective cover 36, and the fixing seat 31 is installed in the switch chamber of the corresponding deep fusion pole 2. On the outer wall of 22, an observation hole 3101 aligned with the monitoring through hole 2201 is provided on the front end face of the fixing seat 31, and a receiving groove 3102 is provided on the rear end face of the fixing seat 31, and the bottom of the receiving groove 3102 is communicated with the observation hole 3101; the transparent glass 32 is installed in the receiving groove 3102 and covers the observation hole 3101; the flange 33 is installed on the fixing seat 31 and is located on the rear side of the fixing seat 31, and the center of the flange 33 has an opening 3301; the camera 35 is installed on the flange 33, the LED light board 34 is annular and is sleeved on the lens 351 of the camera 35, and the lens 351 and the LED light board 34 of the camera 35 are both in the opening 3301 and facing the transparent glass 32; the protective cover 36 is installed on the flange 33 and is located on the rear side of the flange 33, and the protective cover 36 covers the camera 35; the camera 35 of each visual monitoring module 3 is electrically connected to the corresponding signal input end of the display terminal 4.

[0041] In this embodiment, the transparent glass 32 is tempered glass, the protective cover 36 is made of metal, and the fixing base 31 is made of insulating material (such as outdoor epoxy resin or nylon PA66), thereby improving the safety of use.

[0042] In this embodiment, the lens 351 of the camera 35 is a fixed-focus lens, thereby ensuring the clarity of the image captured by the camera 35.

[0043] In this embodiment, a plurality of LED lamp beads (not shown) evenly distributed in a ring shape are arranged on the front side of the LED lamp board 34, and each LED lamp bead emits light toward the transparent glass 32. Thus, the light emission of the LED lamp board 34 can be more uniform.

[0044] In this embodiment, a mounting groove 222 is provided on the outer wall of the switch chamber 22, and a monitoring through hole 2201 is provided at the bottom of the mounting groove 222; the fixing seat 31 is installed in the mounting groove 222, and an annular sealing groove 3103 is provided on the front side of the fixing seat 31, and the annular sealing groove 3103 is located at the outer periphery of the receiving groove 3102, and a first sealing ring 37 is provided in the annular sealing groove 3103. The first sealing ring 37 is used to completely seal the gap between the front side of the fixing seat 31 and the outer side wall of the switch chamber 22, so as to enhance the airtightness of the switch chamber 22 when working. A second sealing ring 38 is provided between the front side of the transparent glass 32 and the bottom of the receiving groove 3102 of the fixing seat 31; and a third sealing ring 39 is provided between the rear side of the transparent glass 32 and the front end face of the flange 33. The second sealing ring 38 and the third sealing ring 39 are used to completely seal the gap between the outer periphery of the transparent glass 32 and the groove wall of the receiving groove 3102, thereby providing two sealing rings between the transparent glass 32 and the groove wall of the receiving groove 3102, thereby ensuring the airtightness inside the switch chamber 22 during operation.

[0045] In this embodiment, the camera 35 is mounted on the flange 33 through a fixing bracket 310. The fixing bracket 310 is U-shaped, and the two ends of the fixing bracket 310 are detachably connected to the flange 33. The camera 35 is clamped and fixed by the fixing bracket 310 and the fixing seat 31. In this way, the camera 35 can be easily disassembled and assembled, and it is convenient to maintain and replace it, so as to prevent the entire column-mounted vacuum circuit breaker from being replaced when the camera 35 is damaged.

[0046] In this embodiment, the protective cover 36 is provided with a plurality of first through holes 3601, the flange 33 is provided with a plurality of second through holes 3302, the number of the second through holes 3302 is the same as the first through holes 3601 and the positions are aligned one by one, the fixing seat 31 is provided with a plurality of locking screw holes 3104, the number of the locking screw holes 3104 is the same as the second through holes 3302 and the positions are aligned one by one; the visual monitoring module 3 also includes a plurality of fixing bolts 311, the screw rods of each fixing bolt 311 sequentially pass through the corresponding first through hole 3601 and the second through hole 3302 and then are threadedly connected with the corresponding locking screw hole 3104. With this structure, the screw rods of each fixing bolt 311 sequentially pass through the corresponding first through hole 3601 and the second through hole 3302 and then are threadedly connected with the corresponding locking screw hole 3104, so as to realize the quick connection between the fixing seat 31, the flange 33 and the protective cover 36, and the operation is more convenient.

[0047] The pole-mounted vacuum circuit breaker of this embodiment adopts a three-phase pillar structure; the number of deep-fused poles 2 is three, and the three deep-fused poles 2 are arranged on the upper side of the operation box 1 from left to right.

[0048] refer to Figure 1The deep fusion pole 2 includes a shell 20, a vacuum interrupter 21, a switch chamber 22, an isolating switch 23, a first insulating pull rod assembly 24 and a second insulating pull rod assembly 25. The vacuum interrupter 21 is arranged in the upper part of the shell 20, and the static end 211 of the vacuum interrupter 21 is arranged upward and extends from the top of the shell 20. The static end 211 of the vacuum interrupter 21 is provided with an incoming line terminal, and the moving end 212 of the vacuum interrupter 21 is arranged downward; the isolating switch 23 includes an isolating static contact 231 and an isolating moving contact 232. The isolating static contact 231 includes a conductive rod 2311 and a static contact 2312. The conductive rod 2311 is installed in the shell 20, and the right end of the conductive rod 2311 extends to the outside of the shell 20. The right end of the conductive rod 2311 is provided with an outgoing line terminal. Terminal (not shown in the figure), the static contact 2312 is installed at the left end of the conductive rod 2311 and is located at the isolating fracture 220; the isolating movable contact 232 includes a movable contact 2321 and a conductive contact rod 2322, the movable contact 2321 is installed at the lower end of the switch chamber 22, the middle section of the conductive contact rod 2322 can be lifted and installed on the movable contact 2321, the upper end of the conductive contact rod 2322 is located directly below the static contact 2312 and cooperates with the static contact 2312; the upper end of the first insulating pull rod assembly 24 and the upper end of the second insulating pull rod assembly 25 are respectively connected to the movable end 212 of the vacuum interrupter 21 and the lower end of the conductive contact rod 2322, and the lower end of the first insulating pull rod assembly 24 and the lower end of the second insulating pull rod assembly 25 are respectively connected to the corresponding adjustment ends of the circuit breaker operating mechanism 5.

[0049] In this embodiment, the deep fusion pole 2 also includes a connecting busbar 26 and a soft connection 27. The connecting busbar 26 is installed in the housing 20, and the first end of the connecting busbar 26 is electrically connected to the moving contact 2321; the two ends of the soft connection 27 are respectively electrically connected to the moving end 212 of the vacuum arc chamber 21 and the second end of the connecting busbar 26. The incoming terminal, the vacuum arc chamber 21, the soft connection 27, the connecting busbar 26, the isolating moving contact 232, the isolating static contact 231, and the outgoing terminal are electrically connected in sequence to form a conductive circuit.

[0050] In this embodiment, each deep fusion pole 2 also includes a current transformer 28 and a secondary lead 29. The current transformer 28 is installed in the housing 20 and is located on the outside of the conductive rod 2311. The upper end of the secondary lead 29 is electrically connected to the current transformer 28; the pole-mounted vacuum circuit breaker also includes a collector (not shown in the figure), an aviation socket 7 and a feeder terminal FTU8. The lower end of the secondary lead 29 of each deep fusion pole 2 is electrically connected to the collector. The collector is communicatively connected to the input end of the feeder terminal FTU8 through the aviation socket 7, and the control end of the circuit breaker operating mechanism 5 is communicatively connected to the output end of the feeder terminal FTU8; the display terminal 4 uses a display screen, and the display screen is installed on the bottom surface of the feeder terminal FTU8. The camera 35 of each visualization monitoring module 3 is electrically connected to the corresponding input end of the display terminal 4 through a camera 35 line. During operation, the collector is used to collect the current and voltage signals of each deep fusion pole 2, and output them to the feeder terminal FTU8 through the aviation socket 7, and then the feeder terminal FTU8 remotely controls the opening and closing of the vacuum circuit breaker on the pole through the circuit breaker operating mechanism 5, so that any three deep fusion poles 2 can be interchanged, thereby realizing automatic control of the circuit breaker opening and closing actions, and improving the stability and reliability of the outdoor high-voltage AC vacuum circuit breaker during operation. The display terminal 4 is set on the bottom surface of the feeder terminal FTU8, so that it can be at a height position that can be clearly observed by the naked eye, and it can also improve the real-time observation of the isolation break 220 by a mobile phone or notebook terminal.

[0051] The feeder terminal FTU8 should have network communication function and serial communication function. The Ethernet port and serial port should meet the design requirements of this document to ensure fast, accurate and reliable communication of the terminal. The above-mentioned feeder terminal FTU8 can be equipped with a control terminal interface, which is used in automated power distribution networks and unmanned substations. Remote data interaction can be carried out through a wireless communication module, and the wireless communication module should meet the design requirements of this document. The remote signaling, telemetry, remote control, and electric energy data transmission protocol of the feeder terminal FTU8 and the master station should adopt the 104 / 101 communication protocol that complies with the DL / T 634 standard. The feeder terminal FTU8 adopts a platform-based hardware design and adapts to the edge computing architecture. The feeder terminal FTU8 should support a security chip with an embedded national secret algorithm to achieve integrity, confidentiality, and availability protection of data interaction between the terminal and the master station, and to achieve confidentiality and integrity protection of locally stored data. The security chip should meet the design requirements of this document. When working normally, the power consumption of the feeder terminal FTU8 is no more than 30VA (including line loss module, wireless communication module in non-communication state, excluding backup power supply and other communication equipment).

[0052] The following is a brief description of the working principle of this column vacuum circuit breaker:

[0053] During operation, the circuit breaker operating mechanism 5 can drive the first insulating pull rod assembly 24 to rise or fall, thereby driving the moving end 212 of the vacuum interrupter 21 to move upward or downward until the moving end 212 of the vacuum interrupter 21 contacts (opens) its static end 211 or the moving and static contacts 2312 are pulled apart by a certain distance (opens), thereby controlling the pole-mounted vacuum circuit breaker to complete the closing action or the opening action; the circuit breaker operating mechanism 5 can also drive the conductive contact rod 2322 to rise or fall through the second insulating pull rod assembly 25, thereby controlling whether the upper end of the conductive contact rod 2322 contacts the static contact 2312, thereby effectively connecting the circuit between the isolating static contact 231 and the isolating moving contact 232 in the case of poor external environment, thereby improving the stability and reliability of the pole-mounted vacuum circuit breaker during operation, and increasing the service life of the pole-mounted vacuum circuit breaker.

[0054] When inspecting and maintaining the pole-mounted vacuum circuit breaker, each visualization monitoring module 3 can respectively perform visual monitoring of the status of the built-in isolating break 220 in the switch room 22 through the corresponding monitoring through hole 2201 in real time: the light emitted by each LED lamp on the LED light board 34 can pass through the transparent glass 32, the observation hole 3101 on the fixing seat 31, and the monitoring through hole 2201 on the switch room in turn to enter the switch room of the deep fusion pole 2, providing lighting conditions for the shooting of the camera 35; at the same time, the lens 351 of the camera 35 successively passes through the transparent glass 32, the observation hole 3101 and the monitoring through hole 2201 to shoot the status of the built-in isolating switch 23 in the deep fusion pole 2 in real time, and transmit the image to the lower or remote display terminal 4; so that the staff can accurately observe whether the port of the isolating switch 23 is closed or opened in place through the display terminal 4, to ensure reliable contact of the contacts when power is supplied, and there is a visible isolating break 220 during power outage operations, which can effectively prevent the risk of misoperation, thereby improving the safety and reliability of the staff's operation.

[0055] Embodiment 2

[0056] refer to Figure 6-Figure 7 , while other parts are the same as those in the first embodiment, the difference is that: in this embodiment, the upper end of the conductive rod 2311 extends out of the housing 20, an outlet terminal (not shown) is installed on the upper end of the conductive rod 2311, and the static contact 2312 is installed at the lower end of the conductive rod 2311 and is located at the isolation fracture 220.

[0057] In this embodiment, the shell 20 is an epoxy resin shell 20, and the outer side of the epoxy resin shell 20 is coated with a silicone layer; the visual monitoring module 3 is covered by the corresponding epoxy resin shell 20. The epoxy resin shell 20 of the deep fusion pole 2 can be made by APG epoxy resin automatic pressure gel technology, and the epoxy resin is used as the insulating medium for casting with a mold, and the vacuum arc chamber 21, the switch chamber 22, and the disconnector 23 are encapsulated into one body, which not only ensures the insulation performance requirements, but also ensures that the thermal expansion and contraction of the pole epoxy resin will not damage the epoxy resin shell 20. In this way, the overall structure of the deep fusion pole 2 can be compact, the total product mass is small, and the cost is saved while meeting the necessary mechanical and electrical properties of the product, thereby improving the electrical and mechanical safety and reliability of the deep fusion pole 2. The silicone layer can make the epoxy resin shell 20 have the advantages of aging resistance and softness, thereby preventing the deep fusion pole 2 from being damaged by bumps.

[0058] In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different, and any equivalent or simple changes made based on the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. The technicians in the technical field of the present invention can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A pole-mounted vacuum circuit breaker with a built-in isolating visible break, comprising an operating box, at least one deep fusion pole and a circuit breaker operating mechanism for controlling the opening and closing actions of the circuit breaker, wherein the deep fusion pole is installed on the upper side of the operating box, and the circuit breaker operating mechanism is installed inside the operating box, characterized in that: Each of the deep fusion poles comprises an outer shell, a vacuum arc extinguishing chamber, a switch chamber, an isolating switch, a first insulating pull rod assembly, a second insulating pull rod assembly, a current transformer and a secondary lead-out line. The outer shell is an epoxy resin shell. The vacuum arc extinguishing chamber and the switch chamber are both arranged in the outer shell. The static end of the vacuum arc extinguishing chamber is arranged upward and extends from the top of the outer shell. The static end of the vacuum arc extinguishing chamber is provided with an incoming line terminal, and the moving end of the vacuum arc extinguishing chamber is arranged downward. An isolating fracture is arranged in the switch chamber. The isolating switch comprises an isolating static contact and an isolating moving contact. The isolating static contact comprises a conductive rod and a static contact. The conductive rod is installed in the outer shell. The upper end of the conductive rod extends to the outside of the outer shell. The upper end of the conductive rod is provided with an outgoing line terminal. The static contact is installed at the lower end of the conductive rod and is located at the isolating fracture. The current transformer is installed in the outer shell and is located on the outside of the conductive rod. The upper end of the secondary lead-out line is electrically connected to the current transformer. The isolating moving contact comprises a moving contact and a conductive contact rod. The moving contact is installed at the lower end of the switch chamber. The middle section of the conductive contact rod can be lifted and installed on the moving contact. On the head, the upper end of the conductive contact rod is directly below the static contact and cooperates with the static contact; the upper end of the first insulating pull rod assembly and the upper end of the second insulating pull rod assembly are respectively connected to the moving end of the vacuum arc extinguishing chamber and the lower end of the conductive contact rod, and the lower end of the first insulating pull rod assembly and the lower end of the second insulating pull rod assembly are respectively connected to the corresponding adjustment ends of the circuit breaker operating mechanism; the column-mounted vacuum circuit breaker also includes a display terminal and at least one visual monitoring module, the number of visual monitoring modules is the same as that of the deep fusion poles and corresponds one to one, a monitoring through hole is provided on the outer wall of the switch room of the deep fusion pole, and the monitoring through hole is opposite to the isolating fracture, the visual monitoring module includes a fixing seat, transparent glass, a flange, an LED light board, a camera and a protective cover, the fixing seat is installed on the outer wall of the switch room of the corresponding deep fusion pole, an observation hole aligned with the monitoring through hole is provided on the front end face of the fixing seat, and a receiving groove is provided on the rear end face of the fixing seat, and the bottom of the receiving groove is communicated with the observation hole; the transparent glass is installed in the receiving groove and covers the observation hole; The flange is installed on the fixing seat and is located at the rear side of the fixing seat, and the center of the flange is provided with an opening; The camera is mounted on the flange, the LED light board is annular and is sleeved on the lens of the camera, the lens of the camera and the LED light board are both located in the opening and facing the transparent glass; the protective cover is mounted on the flange and is located at the rear side of the flange, and the protective cover covers the camera; The visual monitoring module is covered by a corresponding epoxy resin shell; The display terminal adopts a display screen, which is installed on the bottom surface of the feeder terminal FTU. The camera of each visual monitoring module is electrically connected to the corresponding input terminal of the display terminal through a camera line.

2. A pole-mounted vacuum circuit breaker with a built-in isolation visible break according to claim 1, characterized in that: The transparent glass is tempered glass; the lens of the camera is a fixed-focus lens.

3. A pole-mounted vacuum circuit breaker with a built-in isolation visible break according to claim 1, characterized in that: An annular sealing groove is provided on the front side surface of the fixing seat, the annular sealing groove is located on the outer periphery of the accommodating groove, and a first sealing ring is provided in the annular sealing groove; a second sealing ring is provided between the front side surface of the transparent glass and the bottom of the accommodating groove of the fixing seat; a third sealing ring is provided between the rear side surface of the transparent glass and the front end surface of the flange.

4. A pole-mounted vacuum circuit breaker with a built-in isolation visible break according to claim 1, characterized in that: The camera is installed on the flange through a fixing bracket, the fixing bracket is U-shaped, and both ends of the fixing bracket are detachably connected to the flange. The camera is clamped and fixed by the fixing bracket and the fixing seat.

5. A pole-mounted vacuum circuit breaker with a built-in isolation visible break according to claim 1, characterized in that: The protective cover is provided with a plurality of first through holes, the flange is provided with a plurality of second through holes, the number of the second through holes is the same as that of the first through holes and the positions are aligned one by one, the fixing seat is provided with a plurality of locking screw holes, the number of the locking screw holes is the same as that of the second through holes and the positions are aligned one by one; the visual monitoring module also includes a plurality of fixing bolts, the screw rods of each fixing bolt pass through the corresponding first through hole and the second through hole in turn and are threadedly connected with the corresponding locking screw holes.

6. A pole-mounted vacuum circuit breaker with a built-in isolation visible break according to claim 1, characterized in that: The deep fusion pole also includes a connecting busbar and a soft connection. The connecting busbar is installed in the shell, and the first end of the connecting busbar is electrically connected to the moving contact; the two ends of the soft connection are respectively electrically connected to the moving end of the vacuum interrupter and the second end of the connecting busbar. The incoming terminal, the vacuum interrupter, the soft connection, the connecting busbar, the isolating moving contact, the isolating static contact, and the outgoing terminal are electrically connected in sequence to form a conductive circuit.

7. A pole-mounted vacuum circuit breaker with a built-in isolation visible break according to claim 1, characterized in that: The pole-mounted vacuum circuit breaker also includes a collector, an aviation socket and a feeder terminal FTU. The collector and the aviation socket are both arranged in the operation box. The lower end of the secondary lead-out line of the deep fusion pole and the outlet interface of the voltage sensor are electrically connected to the collector. The collector is communicatively connected to the input end of the feeder terminal FTU through the aviation socket, and the adjustment output end of the circuit breaker operating mechanism is communicatively connected to the output end of the feeder terminal FTU.

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