A high-voltage switch cabinet fault detection device and detection method

Abstract

The present application relates to switch cabinet detection technical field, specifically to a kind of high-voltage switch cabinet fault detection device and detection method, detection track is equipped on the inner wall of switch cabinet, multiple detectors are worn in mobile detection box, when the detection head of detector is completely retracted into the aperture, detector is in stop detection state, mobile detection box is walked to detection position along detection track, timer is triggered to time, to make walking wheel stop rotating, while the detection head of corresponding detector is triggered to wear out along the aperture, and start detection work, until the timer ends, mobile detection box continues to walk along detection track, to complete comprehensive fault detection, when the fault signal in switch cabinet is detected by detector on detection position, positioning part is triggered to work, to make the detection head of detector keep wearing out along the aperture, corresponding detector continues to detect until the fault signal is removed, conducive to further safety protection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of switch cabinet detection, and particularly relates to a high-voltage switch cabinet fault detection device and a detection method. BACKGROUND

[0002] The high-voltage switch cabinet is a key power distribution equipment in a power system, generally comprising a large box cabinet and core components such as high-voltage circuit breakers, load switches, contactors, high-voltage fuses, disconnectors, grounding switches and transformers arranged in the cabinet, which are used to monitor parameters such as current, voltage and frequency during power input and output, and immediately cut off the power supply when the current or voltage exceeds the set threshold, thereby playing a protection control role.

[0003] Among them, the existing switch cabinet is usually provided with a plurality of fault detection sensors at a plurality of specific positions in the cabinet, which can discover potential problems in time through real-time monitoring and intelligent analysis. However, in order to ensure comprehensive detection coverage, the same type of detection sensors need to be repeatedly arranged at multiple positions and always remain in working state, which is a waste of detection resources. For this problem, the prior art such as the high-voltage switch cabinet fault monitoring device disclosed in Chinese patent document CN106291272A, the high-voltage switch cabinet multi-fault diagnosis method and device disclosed in CN103105557A, and the high-voltage switch cabinet thermal fault detection device and detection method disclosed in CN103529333A all use gas sampling in the cabinet and detection of the sampled gas to realize monitoring of parameters such as temperature, humidity, gas leakage and dust content in the cabinet, without the need for repeated arrangement of multiple detection sensors. However, if the sampling gas volume is too small, the monitoring result is relatively one-sided and may have certain deviation, and if the sampling gas volume is too large, and the gas monitoring parameters in different regions of the cabinet are inconsistent, for example, the monitoring parameters in some regions are positively deviated and the monitoring parameters in other regions are negatively deviated, the mixing of the gases may result in failure to monitor the abnormalities. Therefore, the fault detection of the high-voltage switch cabinet still needs to be further researched and optimized. SUMMARY

[0004] Therefore, the present application aims to provide a high-voltage switch cabinet fault detection device and a detection method to solve the problem of low detection efficiency or insufficient accuracy in the fault detection of the existing switch cabinet.

[0005] To achieve the above purpose, the present application provides a high-voltage switch cabinet fault detection device arranged in a switch cabinet, comprising:

[0006] a detection track arranged on the inner wall of the switch cabinet, wherein a plurality of detection positions are arranged on the detection track.

[0007] The mobile detection box is rotationally connected with a walking wheel, and a driving part for driving the walking wheel to rotate is arranged in the mobile detection box. The walking wheel is abutted to the detection track, and is used to drive the mobile detection box to walk along the detection track.

[0008] A plurality of detectors are arranged in the mobile detection box, and a plurality of through holes are arranged on the outer side of the mobile detection box. A cleaning part is arranged in the through hole. When the detection head of the detector is completely retracted into the through hole, the detector is in a stop detection state. A timer electrically connected with the driving part is arranged in the mobile detection box. When the mobile detection box walks to a detection position, the timer is triggered to start timing, so that the walking wheel stops rotating, and the detection head of the corresponding detector is triggered to protrude out of the through hole and start detection work until the timer timing ends, and the mobile detection box continues to walk along the detection track.

[0009] A positioning part is arranged beside the detector in the mobile detection box. When the detector detects a fault signal in the switch cabinet, the positioning part is triggered to work to limit the detector, so that the detection head of the detector remains in the state of protruding out of the through hole.

[0010] Preferably, the detector comprises one or more of a temperature sensor, a humidity sensor, a dust monitor, and an SF6 gas monitor.

[0011] Preferably, a door is rotationally connected to the outside of the through hole. When the detection head of the detector is completely retracted into the through hole, the door is rotated to close the outside of the through hole. When the detection head of the detector pushes the door to rotate to open, the corresponding detector is triggered to start detection work.

[0012] Preferably, the cleaning part is a cleaning brush arranged around the inner circle of the through hole.

[0013] Preferably, a positioning sliding block is arranged on the detection position. Sliding grooves are respectively arranged on the upper side and the lower side of the positioning sliding block, and the sliding grooves on the same side are arranged in front of and behind each other. A positioning block is slidably connected in the sliding groove. The left and right sides of the positioning block are designed as inclined end faces. A plurality of detectors are respectively arranged on the upper side and the lower side in the mobile detection box. The positioning block is pushed to slide to the front end or the rear end in the sliding groove, so that when the mobile detection box walks to the detection position, the position of the positioning block is opposite to the bottom end position of the corresponding detector. The bottom end of the corresponding detector is pushed by the positioning block, so that the detection head of the corresponding detector protrudes out of the through hole.

[0014] Preferably, the positioning sliding block is slidably connected to the detection track, and a positioning bolt is connected to the positioning sliding block to lock the position of the positioning sliding block.

[0015] Preferably, the positioning part comprises an extension rod fixed beside the detector. A positioning hole is arranged on the side end of the detector for the movable end of the extension rod to protrude and pass through.

[0016] Preferably, one side of the movable end of the telescopic rod is designed as an inclined end face, when the movable end of the telescopic rod is extended, the inclined end face pushes the positioning hole to drive the bottom end of the detector to move away from the positioning block, one side of the bottom end of the detector is rotationally connected with a tail plate, the tail plate is in an initial folding state of rotationally abutting one side of the bottom end of the detector, when the detector detects a fault signal in the switch cabinet, the tail plate is triggered to rotate to an unfolded state perpendicular to one side of the bottom end of the detector, the positioning block slides over the bottom end of the detector or the unfolded tail plate to trigger the tail plate to rotate to the initial folding state.

[0017] The application also provides a high-voltage switch cabinet fault detection method, comprising the following steps:

[0018] A detection track is arranged on the inner wall of the switch cabinet, a plurality of detectors are arranged in the mobile detection box, a plurality of through holes for the detectors to pass through are arranged on the outer side of the mobile detection box, a cleaning part is arranged in the through hole, and when the detection head of the detector is completely retracted into the through hole, the detector is in a stop detection state;

[0019] When the mobile detection box walks along the detection track to a detection position, a timer is triggered to time, so that the walking wheel stops rotating, the detection head of the corresponding detector is triggered to pass out of the through hole, and detection work starts, until the timer timing ends, the mobile detection box continues to walk along the detection track, if a fault signal in the switch cabinet is detected by the detector at the detection position, the positioning part is triggered to work, so that the detection head of the detector remains in the state of passing out of the through hole, and the corresponding detector continues to detect until the fault signal is removed.

[0020] Preferably, after a fault signal is detected at a certain detection position, and the fault signal is not removed within the detection interval of the detection position, when the mobile detection box moves to the next detection position, the corresponding detector will automatically trigger a detection.

[0021] The application has the following beneficial effects: a detection track is arranged on the inner wall of the switch cabinet, a plurality of detectors are arranged in the mobile detection box, a plurality of through holes for the detectors to pass through are arranged on the outer side of the mobile detection box, a cleaning part is arranged in the through hole, and when the detection head of the detector is completely retracted into the through hole, the detector is in a stop detection state, when the mobile detection box walks along the detection track to a detection position, a timer is triggered to time, so that the walking wheel stops rotating, the detection head of the corresponding detector is triggered to pass out of the through hole, and detection work starts, until the timer timing ends, the mobile detection box continues to walk along the detection track, so as to complete comprehensive fault detection, without repeatedly arranging a plurality of detection sensors, and without always keeping the detection working state, and compared with the way of sampling gas detection, the detection is more comprehensive and effective, if a fault signal in the switch cabinet is detected by the detector at the detection position, the positioning part is triggered to work, so that the detection head of the detector remains in the state of passing out of the through hole, and the corresponding detector continues to detect until the fault signal is removed, which is beneficial to further safety protection. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a top view of the detection track and positioning slider of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal front view of the movable detection box of the present invention when it is moved to the detection position;

[0026] Figure 4 This is a top view of the structure of the mobile detection box of the present invention when it is moved to the detection position;

[0027] Figure 5 This is a schematic diagram of the tail plate of the present invention in its initial retracted state;

[0028] Figure 6 This is a schematic diagram of the structure of the present invention when the mobile detection box is moved to the detection position and the movable end of the telescopic rod is inserted into the positioning hole;

[0029] Figure 7 This is a schematic diagram of the structure of the present invention with the tail plate in an unfolded state, perpendicular to one side of the bottom end of the detector.

[0030] Figure 8 This is a schematic diagram of the structure of the present invention when the movable detection box moves to the next detection position and the movable end of the telescopic rod is inserted into the positioning hole;

[0031] Figure 9 This is a schematic diagram of the structure of the present invention when the movable detection box moves to the next detection position and the telescopic rod is reset.

[0032] The diagram is marked as follows:

[0033] 100. Switch cabinet; 1. Detection track; 2. Moving detection box; 21. Through hole; 22. Door opening; 3. Traveling wheel; 4. Drive unit; 5. Detector; 51. Positioning hole; 6. Positioning part; 7. Positioning slider; 71. Slide groove; 711. Flange; 72. Positioning block; 721. Groove; 8. Positioning sensor; 9. Protrusion; 10. Stop; 11. Tail plate. Detailed Implementation

[0034] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with specific embodiments.

[0035] It should be noted that, unless otherwise defined, technical terms or scientific terms used in the present application shall have the commonly understood meanings thereof by those having ordinary skills in the art to which the present application pertains. The terms "first", "second" and similar terms used in the present application do not indicate any order, number or importance, but are only used to distinguish different components. The terms "comprise", "include" and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, without excluding other elements or objects. The terms "connect" or "connected" and similar terms do not mean physical or mechanical connection, but can include electrical connection, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like only represent relative positional relationships, which can change accordingly when the absolute positions of the described objects change.

[0036] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 A high-voltage switch cabinet fault detection device is arranged in the switch cabinet 100, comprising a detection track 1 arranged on the inner wall of the switch cabinet 100, a plurality of detection positions are arranged on the detection track 1, a walking wheel 3 is rotatably connected in a mobile detection box 2, a driving part 4 for driving the walking wheel 3 to rotate is arranged in the mobile detection box 2, the walking wheel 3 abuts against the detection track 1, for driving the mobile detection box 2 to walk along the detection track 1, a plurality of detectors 5 are arranged in the mobile detection box 2, a plurality of through holes 21 are arranged on the outer side of the mobile detection box 2, a cleaning part is arranged in the through hole 21, when the detection head of the detector 5 is completely retracted into the through hole 21, the detector 5 is in a stopped detection state, a timer electrically connected with the driving part 4 is arranged in the mobile detection box 2, when the mobile detection box 2 walks to the detection position, the timer is triggered to start timing, so that the walking wheel 3 stops rotating, and the detection head of the corresponding detector 5 is triggered to pass through the through hole 21 and start detection work, until the timer timing ends, the mobile detection box 2 continues to walk along the detection track 1, a positioning part 6 is arranged beside the detector 5 in the mobile detection box 2, when the detector 5 detects a fault signal in the switch cabinet 100, the positioning part 6 is triggered to work, for limiting the detector 5, so that the detection head of the detector 5 remains in the state of passing through the through hole 21.

[0037] The present application is based on the existing structure of the high-voltage switch cabinet 100, by arranging the detection track 1 on the inner wall of the switch cabinet 100, a plurality of detection positions are arranged on the detection track 1, preferably, as shown in Figure 1As shown, the detection track 1 is arranged on the inner side wall of the side surface of the switch cabinet 100, that is, on the inner side plate, without affecting the front door opening and operation use. The detection track 1 can be designed in a serpentine shape from top to bottom. The detection position is located on the transverse part of the detection track 1. The moving detection box 2 is rotatably connected with a walking wheel 3. The moving detection box 2 is provided with a driving part 4 for driving the walking wheel 3 to rotate. Specifically, the driving part 4 can adopt existing conventional components such as a speed reducer, a rotary motor, etc. Then, through existing conventional transmission mechanisms such as a pulley structure, a chain wheel structure, a gear structure, etc., the transmission of the walking wheel 3 rotation is realized. The walking wheel 3 is in close contact with the detection track 1, and is used to drive the moving detection box 2 to walk along the detection track 1. A plurality of detectors 5 are arranged in the moving detection box 2. Specifically, the detectors 5 include one or more of a temperature sensor, a humidity sensor, a dust monitor, and an SF6 gas monitor, which are used to monitor the temperature and humidity in the cabinet, avoid temperature anomalies, condensation in the cabinet, and other faults such as flashover. The dust monitor can adopt existing conventional dust monitors and laser particle counters, which are used to monitor the dust concentration in the cabinet to avoid a decrease in insulation performance. SF6 is a common insulating gas in circuit breakers. The SF6 gas monitor can adopt an existing conventional sulfur hexafluoride detector to avoid gas leakage and other risks. For example, the temperature sensor, humidity sensor, dust monitor, and SF6 gas monitor can be vertically arranged in the moving detection box 2, and there are four detectors 5 arranged on the upper side and the lower side of the moving detection box 2. The detectors 5 on the same side are arranged in front of and behind each other. The detectors 5 on the upper and lower sides are arranged in symmetrical positions.

[0038] The outer side of the moving detection box 2 is provided with a plurality of through holes 21 for the detectors 5 to pass through. The detectors 5 and the moving detection box 2 can be connected by existing conventional elastic components such as springs, which are used to drive the detection heads of the detectors 5 to completely retract into the through holes 21. The through holes 21 are provided with a cleaning part, which is a cleaning brush arranged around the inner circle of the through holes 21. When the detection heads of the detectors 5 completely retract into the through holes 21, the cleaning part can clean the detection heads. Figure 9As shown, detector 5 is in a stopped detection state. The mobile detection box 2 contains a timer electrically connected to the drive unit 4. When the mobile detection box 2 moves to a detection position, the timer is triggered, causing the traveling wheel 3 to stop rotating. Simultaneously, the detection head of the corresponding detector 5 is triggered to pass through the through-hole 21 and begin detection. Detection continues until the timer expires. The mobile detection box 2 then continues moving along the detection track 1. A positioning part 6 is located beside detector 5 within the mobile detection box 2. Thus, the mobile detection box 2 periodically moves along the detection track 1, intermittently stopping at each detection position. Based on common fault experiences at each detection position within the cabinet, the required fault detection is initiated. After a timed detection, the mobile detection box 2 continues moving along the detection track 1, thereby completing comprehensive fault detection. This eliminates the need to repeatedly deploy multiple detection sensors or maintain a constant detection state. Furthermore, detector 5 is located through the through-hole... During the switching operation of the 21 through-hole, the detection head of the detector 5 is cleaned by the cleaning department to prevent the accumulation of dust, dirt, and other impurities, which could affect the detection sensitivity and measurement accuracy. Furthermore, compared to the method of evacuating the cabinet and detecting the sampled gas, this method is more comprehensive and effective. If the detector 5 detects a fault signal inside the switch cabinet 100, this fault signal refers to a parameter detected by the detector 5 exceeding the preset safety range. For example, the temperature sensor or humidity sensor may detect that the temperature or humidity inside the cabinet exceeds the preset safe temperature range or safe humidity range, or the dust monitor may detect that the dust concentration inside the cabinet exceeds the preset safe dust concentration range. In this case, the positioning unit 6 is triggered to limit the detector 5, ensuring that the detection head of the detector 5 remains protruding along the through-hole 21. That is, when the moving detection box 2 continues to move along the detection track 1, if... Figure 6 As shown, the corresponding detector 5 that detects the fault signal is always in working condition and is continuously monitored until the fault signal is cleared, which is beneficial for further safety protection.

[0039] In embodiments of the present invention, optionally, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an opening 22 is rotatably connected to the outside of the opening 21, and an elastic component such as a torsion spring can be connected to the rotatable connection. When the detection head of the detector 5 is fully retracted into the opening 21, the opening 22 rotates to close the outside of the opening 21. When the detection head of the detector 5 pushes the opening 22 to rotate and open, it triggers the corresponding detector 5 to start detection.

[0040] Optionally, conventional components such as physical push switches or photoelectric trigger switches can be installed at the door opening 22. The switch at the door opening 22 is connected in series with the power supply wiring circuit of the detector 5, so that when the door opening 22 is closed, the switch at the door opening 22 is open and the detector 5 is in a stopped detection state; when the door opening 22 is opened, the switch at the door opening 22 is closed and the detector 5 starts detection.

[0041] In the embodiments of the present application, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 The detection position is provided with a positioning sliding block 7, which is preferably slidably connected to the detection track 1, as shown in Figure 2 The positioning sliding block 7 is slidably connected to the front end of the detection track 1, and the rear end of the detection track 1 is used for abutting the walking wheel 3, and the positioning sliding block 7 is provided with a positioning bolt, so that the positioning sliding block 7 can be freely pushed to slide to different positions along the detection track 1, and after the position is fixed, the positioning bolt is tightened to make one end of the positioning bolt abut the detection track 1, so as to lock the position of the positioning sliding block 7. The upper and lower sides of the positioning sliding block 7 are symmetrically provided with sliding grooves 71, and the sliding grooves 71 on the same side are arranged in front and back staggered positions. The sliding grooves 71 are slidably connected with positioning blocks 72, and the left and right sides of the positioning blocks 72 are designed as inclined end faces. A plurality of detectors 5 are arranged on the upper side and the lower side in the mobile detection box 2. By pushing the positioning blocks 72 to slide to the front end or the rear end in the sliding grooves 71, for example, when the positioning blocks 72 are manually pushed to the front end in the sliding grooves 71, the positions of the positioning blocks 72 are one-to-one corresponding to the positions of the detectors 5, and when the positioning blocks 72 are manually pushed to the rear end in the sliding grooves 71, the positions of the positioning blocks 72 are staggered with the positions of the detectors 5. Therefore, the front and rear positions of the positioning blocks 72 on the positioning sliding block 7 can be freely adjusted according to the needs, so that when the mobile detection box 2 walks to the detection position, the corresponding detectors 5 are pushed by the positioning blocks 72 at the front end, so that the detection heads of the corresponding detectors 5 are inserted through the through hole 21 and start the detection work.

[0042] Optionally, as shown in Figure 2 The flanges 711 are elastically connected in the sliding grooves 71, and the grooves 721 are oppositely arranged on the two sides of the positioning blocks 72. During the forward and backward movement of the positioning blocks 72, the flanges 711 are pushed inwardly until the positioning blocks 72 are moved to the positions, and the positions of the grooves 721 are opposite to the positions of the flanges 711, so that the flanges 711 are inserted into the grooves 721, thereby achieving better limiting effect.

[0043] Wherein, the optional timer can adopt existing conventional timing switch and other components, can make the circuit open circuit, current interruption or make it flow to other electronic elements of the circuit, from the trigger function is mainly divided into mechanical timing switch, electronic timing switch, etc., optionally, the positioning sensor 8 can be arranged in the mobile detection box 2, more preferably, the positioning sensor 8 is arranged at the two sides of the front end of the mobile detection box 2, and the convex point 9 is arranged at the two sides of the front end of the positioning block 72, the positioning sensor 8 can adopt existing conventional distance sensor and other components, and is electrically connected with the timer, and the timer is electrically connected with the power supply circuit of the driving part 4, so that when the mobile detection box 2 walks to the detection position, that is, when the two sides of the positioning sensor 8 move to the position opposite to the convex point 9, the positioning block 72 pushes the bottom end of the corresponding detector 5, and at the same time, the positioning sensor 8 senses that the distance is less than the preset value, triggers the timer to start working, that is, disconnects the power supply circuit of the driving part 4, and the walking wheel 3 stops rotating, until the timer timing ends, and the mobile detection box 2 continues to walk along the detection track 1.

[0044] Wherein, the actual moving speed of the mobile detection box 2 is slow, which is beneficial to stable positioning detection.

[0045] Wherein, optionally, the stop block 10 can be connected at the two ends of the detection track 1, to avoid the mobile detection box 2 from sliding out of the track, and more preferably, the existing conventional components such as travel switch can be arranged at the side end of the stop block 10, and is electrically connected with the driving part 4, so that when the mobile detection box 2 walks to the stop block 10 at the two ends, the travel switch is triggered, the walking wheel 3 is switched to forward and reverse rotation, so that the mobile detection box 2 continues to walk towards the other end of the detection track 1 immediately or after an intermittent time, to realize periodic and cyclic fault detection.

[0046] More preferably, the fixed positioning sliding block 7 can also be arranged beside the stop block 10, and the positioning sliding block 7 is not provided with the convex point 9, and then only during the intermittent time when the mobile detection box 2 moves to the stop block 10, the corresponding detector 5 bottom end is pushed by the positioning block 72, and the corresponding conventional fault detection is started.

[0047] In specific application, usually, only the humidity detection is started at the bottom position of the detection track 1, only the SF6 detection is started at the position near the circuit breaker on the detection track 1, and the temperature and dust detection are started at other conventional positions on the detection track 1.

[0048] In the embodiments of the application, optionally, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9As shown, the positioning part 6 comprises a telescopic rod fixed beside the detector 5, and the side end of the detector 5 is provided with a positioning hole 51 through which the movable end of the telescopic rod extends, when the detector 5 detects a fault signal in the switch cabinet 100, the movable end of the telescopic rod is triggered to extend and penetrate into the positioning hole 51, so that the detection head of the detector 5 keeps extending through the through hole 21, that is, the working state of the corresponding detector 5 that detects the fault signal is always kept, and the detection is continuously monitored until the fault signal is removed, the detector 5 is reset, and the detection is stopped.

[0049] In the embodiments of the present application, optionally, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 As shown, the movable end of the telescopic rod is designed as an inclined end face, when the movable end of the telescopic rod extends, the inclined end face thereof pushes against the positioning hole 51, driving the bottom end of the detector 5 to move away from the positioning block 72, and the bottom end of the detector 5 is rotatably connected with the tail plate 11, as shown in Figure 3 、 Figure 5 As shown, the tail plate 11 is in an initial folded state of rotating against the bottom end of the detector 5, and specifically, the bottom end of the detector 5 can be connected with a rotary cylinder, a rotary motor or the like component for driving the tail plate 11 to rotate, and the bottom end of the detector 5 and the tail plate 11 can be further provided with existing conventional components such as a travel switch;

[0050] For example, the travel switch is located at the edge position of the bottom end of the detector 5, when the mobile detection box 2 moves to the detection position, as shown in Figure 3 、 Figure 4 As shown, the positioning block 72 abuts against the middle position of the bottom end of the corresponding detector 5, and does not trigger the travel switch, if the detector 5 does not detect a fault signal in the cabinet, after the intermittent time, the mobile detection box 2 continues to move, at this time, even if the travel switch is triggered, since the tail plate 11 is in the initial folded state, the tail plate 11 remains stationary, if the detector 5 detects a fault signal in the cabinet, as shown in Figure 6 、 Figure 7As shown, the corresponding tail plate 11 is triggered to rotate to the unfolded state perpendicular to the bottom end side of the detector 5, at this time, the travel switch at the bottom end of the tail plate 11 is at the same horizontal position as the travel switch at the bottom end of the detector 5, and the movable end of the telescopic rod is inserted into the positioning hole 51, if the fault signal is eliminated within the intermittent time, it may be a false detection, at this time, the mobile detection box 2 continues to walk, and the positioning block 72 will touch the travel switch at the bottom end of the detector 5 to trigger the tail plate 11 to rotate and reset to the initial folded state, if the fault signal is not eliminated within the intermittent time, the movable end of the telescopic rod continues to be inserted into the positioning hole 51, at this time, the mobile detection box 2 continues to walk, as shown, Figure 8 As shown, on the one hand, the corresponding detector 5 continues to detect, and on the other hand, the bottom end of the detector 5 moves away from the positioning block 72, so that the travel switch at the bottom end of the detector 5 is not triggered, and the tail plate 11 maintains the unfolded state, so that the mobile detection box 2 moves to the next detection position, even if the fault signal is eliminated, as shown, Figure 9 As shown, the telescopic rod resets and moves away from the positioning hole 51, but the tail plate 11 still maintains the unfolded state, so that the positioning block 72 pushes the tail plate 11 or the bottom of the detector 5, the detection head of the detector 5 is pushed out along the through hole 21, and the detection work begins, until the positioning block 72 abuts against the middle position of the bottom end of the corresponding detector 5 or the middle position of the bottom end of the tail plate 11, and then touches the travel switch on one side to trigger the tail plate 11 to rotate to the initial folded state, so that after a fault signal is detected at a certain detection position, and the fault signal is not eliminated within the detection intermittent time of the detection position, the corresponding detector 5 of the next detection position will automatically trigger a detection, which is beneficial to further safety protection.

[0051] The application also provides a high-voltage switch cabinet fault detection method, comprising the following steps:

[0052] A detection track 1 is arranged on the inner wall of the switch cabinet 100, a plurality of detectors 5 are arranged in the mobile detection box 2, a plurality of through holes 21 for the detectors 5 to pass through are arranged on the outer side of the mobile detection box 2, a cleaning part is arranged in the through hole 21, and when the detection head of the detector 5 is completely retracted into the through hole 21, the detector 5 is in a stop detection state;

[0053] When the mobile detection box 2 walks along the detection track 1 to a detection position, a timer is triggered to time, so that the walking wheel 3 stops rotating, and the detection head of the corresponding detector 5 is triggered to pass out along the through hole 21 and start detection work, until the timer timing ends, the mobile detection box 2 continues to walk along the detection track 1, if a fault signal in the switch cabinet 100 is detected by the detector 5 at the detection position, the positioning part 6 is triggered to work, so that the detection head of the detector 5 remains in the state of passing out along the through hole 21, and the corresponding detector 5 continues to detect until the fault signal is eliminated.

[0054] Even better, if a fault is detected at a certain detection position and the fault is not eliminated during the detection interval of that detection position, the corresponding detector 5 will automatically trigger a detection when the moving detection box 2 moves to the next detection position.

[0055] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

Claims

1. A fault detection device for a high-voltage switchgear, installed inside the switchgear (100), characterized in that, include: The detection track (1) is located on the inner wall of the switch cabinet (100), and multiple detection positions are arranged on the detection track (1); A mobile detection box (2) is rotatably connected to a walking wheel (3). The mobile detection box (2) is provided with a driving part (4) for driving the walking wheel (3) to rotate. The walking wheel (3) abuts against the detection track (1) and is used to drive the mobile detection box (2) to move along the detection track (1). Multiple detectors (5) are installed inside the mobile detection box (2). Multiple openings (21) are provided on the outside of the mobile detection box (2). A cleaning part is provided inside the opening (21). When the detection head of the detector (5) is completely retracted into the opening (21), the detector (5) is in a stopped detection state. A timer electrically connected to the drive unit (4) is provided inside the mobile detection box (2). When the mobile detection box (2) moves to the detection position, the timer is triggered to stop the rotation of the walking wheel (3). At the same time, the detection head of the corresponding detector (5) is triggered to pass through the opening (21) and start the detection work until the timer ends. The mobile detection box (2) continues to move along the detection track (1). The mobile detection box (2) is provided with a positioning part (6) located next to the detector (5). When the detector (5) detects a fault signal in the switch cabinet (100), the positioning part (6) is triggered to work to limit the detector (5) so that the detection head of the detector (5) remains in the state of passing through the through hole (21). The detection position is provided with a positioning slider (7), and the upper and lower sides of the positioning slider (7) are respectively provided with grooves (71), and the grooves (71) on the same side are staggered. A positioning block (72) is slidably connected in the groove (71). The left and right sides of the positioning block (72) are designed with inclined end faces. Multiple detectors (5) are respectively installed on the upper and lower sides of the mobile detection box (2). By pushing the positioning block (72) to slide to the front or rear end of the groove (71), when the mobile detection box (2) moves to the detection position, the position of the positioning block (72) is opposite to the bottom position of the corresponding detector (5). By pushing the bottom of the corresponding detector (5) through the positioning block (72), the detection head of the corresponding detector (5) is pushed out along the through hole (21). The positioning part (6) includes a telescopic rod fixedly disposed on the side of the detector (5). The side end of the detector (5) is provided with a positioning hole (51) for the movable end of the telescopic rod to extend and pass through. The movable end of the telescopic rod is designed with an inclined end face. When the movable end of the telescopic rod extends, it pushes against the positioning hole (51) through its inclined end face, causing the bottom end of the detector (5) to move away from the positioning block (72). The bottom end of the detector (5) is rotatably connected to a tail plate (11). The tail plate (11) is in an initial retracted state that rotates against the bottom end of the detector (5). When the detector (5) detects a fault signal in the switch cabinet (100), it triggers the tail plate (11) to rotate into an unfolded state perpendicular to the bottom end of the detector (5). The positioning block (72) abuts against the bottom end of the detector (5) or the unfolded tail plate (11) slides past, triggering the tail plate (11) to rotate into the initial retracted state.

2. The high-voltage switchgear fault detection device according to claim 1, characterized in that, The detector (5) includes one or more of the following: temperature sensor, humidity sensor, dust monitor, and SF6 gas monitor.

3. The high-voltage switchgear fault detection device according to claim 1, characterized in that, The outside of the opening (21) is rotatably connected to the door (22). When the detection head of the detector (5) is fully retracted into the opening (21), the door (22) rotates to close the outside of the opening (21). When the detection head of the detector (5) pushes the door (22) to rotate and open, it triggers the corresponding detector (5) to start detection.

4. The high-voltage switchgear fault detection device according to claim 1, characterized in that, The cleaning section consists of cleaning bristles arranged around the inner circle of the opening (21).

5. A high-voltage switchgear fault detection device according to claim 1, characterized in that, The positioning slider (7) is slidably connected to the detection track (1), and a positioning bolt is connected to the positioning slider (7) to lock the position of the positioning slider (7).

6. A method for detecting faults in high-voltage switchgear, wherein the method employs the high-voltage switchgear fault detection device as described in any one of claims 1-5, characterized in that, Includes the following steps: The switch cabinet (100) has a detection track (1) on its inner wall. Multiple detectors (5) are installed inside the movable detection box (2). Multiple openings (21) for the detectors (5) to pass through are opened on the outside of the movable detection box (2). A cleaning part is provided inside the opening (21). When the detection head of the detector (5) is completely retracted into the opening (21), the detector (5) is in a stopped detection state. When the mobile detection box (2) moves along the detection track (1) to the detection position, it triggers the timer to stop the walking wheel (3) from rotating. At the same time, it triggers the detection head of the corresponding detector (5) to pass through the through hole (21) and start the detection work. Until the timer ends, the mobile detection box (2) continues to move along the detection track (1). If the detector (5) detects a fault signal in the switch cabinet (100) at the detection position, it triggers the positioning part (6) to work so that the detection head of the detector (5) remains in the state of passing through the through hole (21). The corresponding detector (5) continues to detect until the fault signal is cleared.

7. The fault detection method for high-voltage switchgear according to claim 6, characterized in that, If a fault is detected at a certain detection position and the fault is not eliminated during the detection interval of that detection position, the corresponding detector (5) will automatically trigger a detection when the moving detection box (2) moves to the next detection position.

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