Visual monitoring device for built-in isolation fracture vacuum circuit breaker

Abstract

The utility model relates to a visual monitoring device for a built-in isolation fracture vacuum circuit breaker. The visual monitoring device comprises a fixed seat, transparent glass, a flange plate, an LED lamp panel, a camera and a protective cover. A mounting groove is formed in the rear end face of the fixed seat, and an observation hole communicated with the bottom of the mounting groove is formed in the front end face of the fixed seat; the transparent glass is mounted in the mounting groove and covers the observation hole; the flange plate is installed on the fixing base and located on the rear side of the fixing base, and an opening is formed in the center of the flange plate. The camera is installed on the flange plate, the LED lamp panel is annular and is arranged on a lens of the camera in a sleeving mode, and the lens of the camera and the LED lamp panel are both located in the opening and face the transparent glass; the protective cover is installed on the flange plate and covers the camera. The visual monitoring device can monitor the state of the built-in disconnecting switch of the vacuum circuit breaker in real time so as to accurately observe whether the port of the disconnecting switch is closed and opened in place or not, thereby facilitating the inspection, maintenance and other operations of the vacuum circuit breaker.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, and particularly relates to a visual monitoring device for an internal isolation-break vacuum circuit breaker. Background Art

[0002] A vacuum circuit breaker is a switching device that can close, carry, and interrupt the current under normal circuit conditions and can also close, carry, and interrupt the current under abnormal circuit conditions within a specified time; an isolating switch can disconnect a no-load circuit to protect corresponding personnel during maintenance; the two are generally used in combination so that the circuit breaker can be overhauled 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 become blocked. For places with frequent operations, especially for internal isolating switches, special attention should be paid to whether the contacts are in place during opening and closing, the wear condition of the contacts, and the temperature condition during abnormal operation. It cannot be used continuously when the temperature exceeds the allowable operating temperature of the isolating switch contacts.

[0003] Chinese Patent No. CN116469724A discloses an internal isolation-break vacuum circuit breaker, which includes 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 to an external circuit is fixedly connected inside the switch chamber. A moving contact capable of moving to contact or separate from the static contact is arranged inside the switch chamber. The circuit breaker body and the switch chamber are connected to a control box, and a switch driving device for controlling the movement of the moving contact is arranged inside the control box. The moving contact and the static contact are both arranged inside the vacuum switch chamber, so that the circuit can be effectively connected between the moving contact and the static contact even in a poor external environment, improving the service life of the overall device. However, the structure of this internal isolation-break vacuum circuit breaker is in a completely sealed form, and it is impossible to accurately see whether the isolating switch port is closed in place before power transmission, and it is impossible to see whether the isolating switch is opened in place during power-off maintenance, which easily leads to the risk of misoperation. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a visual monitoring device for an internal isolation-break vacuum circuit breaker, which can monitor the state of the isolating switch inside the vacuum circuit breaker in real time to accurately observe whether the isolating switch port is closed or opened in place, facilitating operations such as inspection and maintenance of the vacuum circuit breaker. The adopted technical solution is as follows:

[0005] A visual monitoring device for an in-built isolating-break vacuum circuit breaker, characterized in that it includes a fixed seat, a transparent glass, a flange, an LED light board, a camera and a protective cover; an installation groove is provided on the rear end face of the fixed seat, and an observation hole communicating with the bottom of the installation groove is provided on the front end face of the fixed seat; the transparent glass is installed in the installation groove and covers the observation hole; the flange is installed on the fixed seat and is located at the rear side of the fixed seat, and an opening is provided at the center of the flange; the camera is installed on the flange, the LED light board is annular and sleeved on the lens of the camera, and the lens of the camera and the LED light board are both in the opening and face the transparent glass; the protective cover is installed on the flange and is located at the rear side of the flange, and the protective cover covers the camera.

[0006] Generally, the fixed seat of the above visual monitoring device is installed on the outer side wall of the switch chamber of the in-built isolating-break vacuum circuit breaker. A monitoring through hole is provided on the outer side wall of the switch chamber, and the observation hole on the fixed seat is aligned with the monitoring through hole; the data output end of the camera of the above visual monitoring device can be electrically connected to a display through a video signal line, and the camera can transmit the video and image pictures obtained by shooting to the display screen of the display.

[0007] In the structure of the above visual monitoring device, the transparent glass is used to cover the observation hole and the monitoring through hole of the switch chamber, which can ensure that the internal sealing of the switch chamber of the vacuum circuit breaker is not affected and provide an observation angle for the lens of the camera; the light emitted by each LED on the LED light board can sequentially pass through the transparent glass, the observation hole on the fixed seat, and the monitoring through hole on the switch chamber and enter the inside of the switch chamber of the vacuum circuit breaker to provide lighting conditions for the shooting of the camera; the lens of the camera faces the transparent glass, and the state of the in-built isolating switch of the vacuum circuit breaker can be shot in real time through the observation hole and the monitoring through hole, and the image is transmitted to the lower or remote display terminal; the protective cover is used to protect the camera and is convenient for wiring.

[0008] As a preferred solution of the present utility model, the material of the fixed seat is an insulating material, such as outdoor epoxy resin or nylon PA66. This can improve the safety of use.

[0009] As a preferred solution of the present utility model, the transparent glass is tempered glass.

[0010] As a preferred solution of the present utility model, the material of the protective cover is metal.

[0011] As a preferred solution of the present utility model, the lens of the camera is a fixed-focus lens. This can ensure the clarity of the images captured by the camera.

[0012] As a preferred embodiment of the present utility model, a plurality of LED lamp beads are evenly distributed in a ring on the front side of the LED lamp board, and each LED lamp bead emits light towards the transparent glass. This can make the light emission of the LED lamp board more uniform.

[0013] As another preferred embodiment of the present utility model, a ring-shaped LED lamp tube is provided on the front side of the LED lamp board, and the ring-shaped LED lamp tube emits light towards the transparent glass. This can make the light emission of the LED lamp board more uniform.

[0014] As a preferred embodiment of the present utility model, a ring-shaped sealing groove is provided on the front side of the fixed seat, the ring-shaped sealing groove is located on the outer periphery of the installation groove, and a first sealing ring is provided in the ring-shaped sealing groove. The first sealing ring is used to completely seal the gap between the front side of the fixed seat and the outer side wall of the switch chamber of the vacuum circuit breaker, enhance the airtightness during the internal operation of the switch chamber of the vacuum circuit breaker, and make the insulation states of the vacuum interrupter and the current transformer in the vacuum circuit breaker completely unaffected by the external environment.

[0015] As a preferred embodiment of the present utility model, a second sealing ring is provided between the front side of the transparent glass and the bottom of the installation groove of the fixed seat. The second sealing ring is used to seal the gap between the outer periphery of the transparent glass and the groove wall of the installation groove, which can ensure the airtightness during the internal operation of the switch chamber of the vacuum circuit breaker.

[0016] As a further preferred embodiment of the present utility model, a third sealing ring is provided between the rear side of the transparent glass and the front end face of the flange. The third sealing ring is used to completely seal the gap between the outer periphery of the transparent glass and the groove wall of the installation groove. Thus, there are two sealing rings between the transparent glass and the groove wall of the installation groove, which can ensure the airtightness during the internal operation of the switch chamber of the vacuum circuit breaker.

[0017] As a preferred embodiment of the present utility model, the camera is installed on the flange through a fixed bracket. The fixed bracket is U-shaped, and the two ends of the fixed bracket are detachably connected to the flange. The camera is clamped and fixed by the fixed bracket and the fixed seat together. This can facilitate the disassembly and assembly of the camera, facilitate its maintenance and replacement, and prevent the replacement of the entire vacuum circuit breaker due to the damage of the camera.

[0018] As a preferred embodiment of the present utility model, the flange is detachably installed on the fixed seat, and the protective cover is detachably installed on the flange.

[0019] As a further preferred embodiment of the present utility model, a plurality of first through holes are provided on the protective cover, and a plurality of second through holes are provided on the flange. The number of the second through holes is the same as that of the first through holes and their positions are aligned one by one. A plurality of locking screw holes are provided on the fixing seat, and the number of the locking screw holes is the same as that of the second through holes and their positions are aligned one by one. The visual monitoring device further includes a plurality of fixing bolts. The screw rods of the fixing bolts sequentially pass through the corresponding first through holes and second through holes and are threadedly connected to the corresponding locking screw holes. With this structure, the quick connection between the fixing seat, the flange and the protective cover can be realized by threading the screw rods of the fixing bolts through the corresponding first through holes and second through holes and then threadedly connecting them to the corresponding locking screw holes, and the operation is more convenient.

[0020] In the present utility model, the terms "front" and "rear" respectively refer to: in the direction in which the visual monitoring device is installed on the vacuum circuit breaker, the side close to the vacuum circuit breaker is the front, and the side far from the vacuum circuit breaker is the rear.

[0021] Compared with the prior art, the present utility model has the following advantages:

[0022] This kind of visual monitoring device can monitor the state of the disconnector inside the vacuum circuit breaker in real time and transmit the image to the lower or remote display terminal. Thus, it can accurately observe whether the disconnector port is closed or opened in place, which is convenient for the staff to check and maintain the vacuum circuit breaker, effectively preventing the risk of misoperation and achieving the goals of safer, faster and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural view of the visual monitoring device according to the preferred embodiment of the present utility model.

[0024] Figure 2 is Figure 1 an exploded view of the visual monitoring device shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] As Figure 1 - Figure 2As shown in the figure, this visualization monitoring device for an in-built isolating-break vacuum circuit breaker includes a fixed seat 1, a transparent glass 2, a flange 3, an LED light board 4, a camera 5, and a protective cover 6. An installation groove 101 is provided on the rear end face of the fixed seat 1, and an observation hole 102 communicating with the bottom of the installation groove 101 is provided on the front end face of the fixed seat 1. The transparent glass 2 is installed in the installation groove 101 and covers the observation hole 102. The flange 3 is detachably installed on the fixed seat 1 and is located at the rear side of the fixed seat 1. An opening 301 is provided at the center of the flange 3. The camera 5 is installed on the flange 3. The LED light board 4 is in a ring shape and sleeved on the lens 51 of the camera 5. The lens 51 of the camera 5 and the LED light board 4 are both in the opening 301 and face the transparent glass 2. The protective cover 6 is detachably installed on the rear side of the flange 3 and cooperates with the flange 3 to completely cover the camera 5.

[0026] In this embodiment, the material of the fixed seat 1 is an insulating material, such as outdoor epoxy resin or nylon PA66; the transparent glass 2 is tempered glass; the material of the protective cover 6 is metal.

[0027] In this embodiment, an annular sealing groove 103 is provided on the front side face of the fixed seat 1. The annular sealing groove 103 is located on the outer periphery of the installation groove 101, and a first sealing ring 7 is provided in the annular sealing groove 103. A second sealing ring 8 is provided between the front side face of the transparent glass 2 and the bottom of the installation groove 101 of the fixed seat 1. A third sealing ring 9 is provided between the rear side face of the transparent glass 2 and the front end face of the flange 3. The first sealing ring 7, the second sealing ring 8, and the third sealing ring 9 are all O-rings. The first sealing ring 7 is used to completely seal the gap between the front side face of the fixed seat 1 and the outer side wall of the switch chamber 501 of the vacuum circuit breaker 50, thereby ensuring the airtightness during the internal operation of the switch chamber 501 of the vacuum circuit breaker 50. The second sealing ring 8 and the third sealing ring 9 are used to completely seal the gap between the outer periphery of the transparent glass 2 and the groove wall of the installation groove 101, and there are two sealing rings between the transparent glass 2 and the groove wall of the installation groove 101, thereby ensuring the airtightness during the internal operation of the switch chamber 501 of the vacuum circuit breaker 50.

[0028] In this embodiment, a plurality of LED lamp beads (not shown in the figure) are evenly distributed in a ring shape on the front side face of the LED light board 4, and each LED lamp bead emits light toward the transparent glass 2.

[0029] In this embodiment, the lens of the camera 5 is a fixed-focus lens; the camera 5 is installed on the flange 3 through a fixed bracket 10. The fixed bracket 10 is in a U shape, and both ends of the fixed bracket 10 are detachably connected to the flange 3. The camera 5 is clamped and fixed by the fixed bracket 10 and the fixed seat 1. Thus, the camera 5 can be conveniently disassembled and assembled, facilitating its maintenance and replacement, and preventing the replacement of the entire vacuum circuit breaker 50 when the camera 5 is damaged.

[0030] In this embodiment, a plurality of first through holes 601 are provided on the protective cover 6, and a plurality of second through holes 301 are provided on the flange 3. The number of the second through holes 301 is the same as that of the first through holes 601 and their positions are aligned one by one. A plurality of locking screw holes 104 are provided on the fixing base 1. The number of the locking screw holes 104 is the same as that of the second through holes 301 and their positions are aligned one by one. The visual monitoring device further includes a plurality of fixing bolts 11. The screw rods of the fixing bolts 11 pass through the corresponding first through holes 601 and second through holes 301 in sequence and are threadedly connected to the corresponding locking screw holes 104. With this structure, the fixing base 1, the flange 3 and the protective cover 6 can be quickly connected by threading the screw rods of the fixing bolts 104 through the corresponding first through holes 601 and second through holes 301 in sequence and then threadedly connecting them to the corresponding locking screw holes 104, making the operation more convenient.

[0031] The installation method and working process of this visual monitoring device are briefly described below:

[0032] The fixing base 1 of this visual monitoring device is installed on the outer side wall of the switch chamber 501 of the built-in isolating-break vacuum circuit breaker 50 through a plurality of second fixing bolts 12. A monitoring through hole 502 is provided on the outer side wall of the switch chamber 501, and the position of the monitoring through hole 502 corresponds to that of the isolating switch 503. The observation hole 102 on the fixing base 1 is aligned with the monitoring through hole 502. The transparent glass 2 is used to cover the observation hole 102 and the monitoring through hole 502 of the switch chamber 501, which can ensure that the internal sealing of the switch chamber 501 of the vacuum circuit breaker 50 is not affected and provides an observation angle for the lens 51 of the camera 5. The protective cover 6 is used to protect the camera 5 and facilitate wire routing.

[0033] During operation, the light emitted by each LED lamp bead of the LED lamp board 4 passes through the transparent glass 2, the observation hole 102 on the fixing base 1, and the monitoring through hole 502 on the switch chamber 501 in sequence and enters the interior of the switch chamber 501 of the vacuum circuit breaker 50 to provide lighting conditions for the shooting of the camera 5. At the same time, the lens 51 of the camera 5 passes through the transparent glass 2, the observation hole 102 and the monitoring through hole 502 in sequence to take real-time pictures of the state of the isolating switch 503 built in the switch chamber 501, and transmits the images to the lower or remote display terminal.

[0034] In addition, it should be noted that for the specific embodiments described in this specification, the names of their respective parts and the like can be different. Any equivalent or simple changes made according to the structure, features, and principles described in the inventive concept of this utility model patent are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains can make various modifications, supplements, or use similar ways of substitution to the specific embodiments described, as long as they do not deviate from the structure of this utility model or exceed the scope defined by this claims, they should all fall within the protection scope of this utility model.

Claims

1. A visual monitoring device for a vacuum circuit breaker with a built-in isolating break, characterized in that: It includes a fixing seat, transparent glass, a flange, an LED light board, a camera and a protective cover; the fixing seat is made of insulating material, a mounting groove is arranged on the rear end surface of the fixing seat, and an observation hole communicating with the bottom of the mounting groove is arranged on the front end surface of the fixing seat; an annular sealing groove is arranged on the front side surface of the fixing seat, the annular sealing groove is located on the outer periphery of the mounting groove, and a first sealing ring is arranged in the annular sealing groove; the transparent glass is installed in the mounting 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 an opening is provided at the center of the flange; a second sealing ring is provided between the front side of the transparent glass and the bottom of the mounting 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 camera is installed on the flange, the lens of the camera is a fixed-focus lens, the LED light board is annular and is mounted on the lens of the camera, and 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.

2. A visual monitoring device for a vacuum circuit breaker with a built-in isolating break according to claim 1, characterized in that: The transparent glass is tempered glass.

3. A visual monitoring device for a vacuum circuit breaker with a built-in isolating break according to claim 1, characterized in that: A plurality of LED lamp beads evenly distributed in a ring shape are arranged on the front side of the LED light board, and each LED lamp bead emits light toward the transparent glass; or, a ring-shaped LED lamp tube is arranged on the front side of the LED light board, and the ring-shaped LED lamp tube emits light toward the transparent glass.

4. The visual monitoring device for a vacuum circuit breaker with a built-in isolating 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. The visual monitoring device for a vacuum circuit breaker with a built-in isolating break according to claim 1, characterized in that: The flange is detachably mounted on the fixing seat, and the protective cover is detachably mounted on the flange.

6. A visual monitoring device for a vacuum circuit breaker with a built-in isolating break according to claim 5, 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 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 device also includes a plurality of fixing bolts, the screw rod of each fixing bolt passes through the corresponding first through hole and the second through hole in turn and is threadedly connected with the corresponding locking screw hole.

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