High-voltage switch cabinet fault detection device and detection method

Abstract

The invention relates to the technical field of switch cabinet detection, in particular to a high-voltage switch cabinet fault detection device and method, a detection track is arranged on the inner wall of a switch cabinet, a plurality of detectors are arranged in a mobile detection box in a penetrating mode, and when detection heads of the detectors completely retract into penetrating openings, the detectors are in a detection stopping state; when the mobile detection box walks to a detection position along the detection track, the timer is triggered to time, so that the walking wheels stop rotating, the detection head of the corresponding detector is triggered to penetrate out along the penetrating opening and start detection work, and the mobile detection box continues to walk along the detection track until timing of the timer is finished, so that comprehensive fault detection is completed. When a fault signal in the switch cabinet is detected by the detector on the detection position, the positioning part is triggered to work, so that the detection head of the detector keeps a state of penetrating out along the penetrating opening, the corresponding detector continuously detects until the fault signal is removed, and further safety protection is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of switchgear detection, and particularly to a high-voltage switchgear fault detection device and a detection method. Background Art

[0002] A high-voltage switchgear is a key power distribution device in the power system, generally including a large box-type cabinet body, and core components such as a high-voltage circuit breaker, a load switch, a contactor, a high-voltage fuse, a disconnector, an earthing switch, and a transformer installed in the cabinet body. It is used to monitor parameters such as current, voltage, and frequency during the process of power access and output. For example, when the current or voltage exceeds the set threshold, the power supply will be immediately cut off to play a protection and control role.

[0003] Among them, existing switchgears usually have multiple fault detection sensors installed at multiple specific positions inside the cabinet. Through real-time monitoring and intelligent analysis, potential problems can be discovered in a timely manner. However, to ensure comprehensive detection coverage, similar detection sensors need to be repeatedly installed at multiple positions and always remain in a working state, which is relatively wasteful of detection resources. In this regard, in the prior art, such as a high-voltage switchgear fault monitoring device disclosed in Chinese patent document CN106291272A, a high-voltage switchgear multi-fault diagnosis method and device disclosed in CN103105557A, and a high-voltage switchgear thermal fault detection device and detection method disclosed in CN103529333A, etc., all adopt the method of pumping air inside the cabinet and detecting the sampled gas to monitor parameters such as temperature, humidity, gas leakage, and dust content inside the cabinet, without the need to repeatedly deploy multiple detection sensors. However, if the sampled gas volume is too small, the monitoring results will be relatively one-sided and there may be certain deviations. And if the sampled gas volume is too large, and when the gas monitoring parameters in different areas inside the cabinet are inconsistent, for example, the monitoring parameters in some areas are positively deviated and the monitoring parameters in other areas are negatively deviated, it may be impossible to detect abnormalities due to gas mixing. Therefore, the fault detection of high-voltage switchgears still needs to be further studied and optimized. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a high-voltage switchgear fault detection device and a detection method to solve the problems of low detection efficiency or insufficient accuracy in the fault detection of existing switchgears.

[0005] Based on the above purpose, the present invention provides a high-voltage switchgear fault detection device installed inside the switchgear, including: A detection track installed on the inner wall of the switchgear, and multiple detection positions are arranged on the detection track; A movable detection box, in which a traveling wheel is rotatably connected. A driving part for driving the traveling wheel to rotate is arranged inside the movable detection box. The traveling wheel abuts against the detection track and is used to drive the movable detection box to travel along the detection track; A plurality of detectors are arranged inside the mobile detection box. A plurality of through holes are formed on the outer side of the mobile detection box. A cleaning part is arranged in the through holes. When the detection heads of the detectors are completely retracted into the through holes, the detectors are in a stopped detection state. A timer electrically connected to the driving part is arranged inside the mobile detection box. When the mobile detection box walks to the detection position, the timer is triggered to start timing, so that the walking wheels stop rotating. At the same time, the detection heads of the corresponding detectors are triggered to penetrate out along the through holes and start the detection work until the timer finishes timing, and then the mobile detection box continues to walk along the detection track; A positioning part is arranged beside the detector inside the mobile detection box. When a fault signal in the switch cabinet is detected by the detector, the positioning part is triggered to work to limit the detector, so that the detection head of the detector keeps the state of penetrating out along the through hole.

[0006] Preferably, the detector includes one or more of a temperature sensor, a humidity sensor, a dust monitor, and an SF6 gas monitor.

[0007] Preferably, a door is rotatably connected to the outside of the through hole. When the detection head of the detector is completely retracted into the through hole, the door rotates to close the outside of the through hole. When the detection head of the detector pushes the door to rotate and open, the corresponding detector is triggered to start the detection work.

[0008] Preferably, the cleaning part is a cleaning brush arranged around the inner circle of the through hole.

[0009] Preferably, a positioning slider is arranged at the detection position. Sliding grooves are respectively formed on the upper and lower sides of the positioning slider, and the sliding grooves on the same side are arranged in a front-back dislocation manner. A positioning block is slidably connected in the sliding groove. The left and right sides of the positioning block are designed with inclined end faces. A plurality of detectors are respectively arranged on the upper side and the lower side inside the mobile detection box. By pushing the positioning block to slide to the front end or the rear end in the sliding groove, when the mobile detection box walks to the detection position, the position of the positioning block is opposite to the bottom 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 penetrates out along the through hole.

[0010] Preferably, the positioning slider is slidably connected to the detection track, and a positioning bolt is connected to the positioning slider for locking the position of the positioning slider.

[0011] Preferably, the positioning part includes a telescopic rod fixedly arranged beside the detector, and a positioning hole for the movable end of the telescopic rod to extend out and penetrate is formed at the side end of the detector.

[0012] Preferably, one side of the movable end of the telescopic rod is designed with an inclined end face. When the movable end of the telescopic rod extends out, it pushes against the positioning hole through its inclined end face, driving the bottom end of the detector to move away from the positioning block. One side of the bottom end of the detector is rotatably connected with a tail plate. The tail plate is in an initial folded state that rotatably abuts against one side of the bottom end of the detector. When the detector detects a fault signal in the switch cabinet, it triggers the tail plate to rotate into an unfolded state perpendicular to one side of the bottom end of the detector. The positioning block abuts against the bottom end of the detector or slides over the bottom end of the unfolded tail plate, triggering the tail plate to rotate into the initial folded state.

[0013] The present invention also provides a method for detecting faults in a high-voltage switch cabinet, including the following steps: There is a detection track provided on the inner wall of the switch cabinet. A plurality of detectors are arranged in the movable detection box. A plurality of through holes for the detectors to pass through are provided on the outer side of the movable detection box. A cleaning part is arranged in the through holes. When the detection heads of the detectors are completely retracted into the through holes, the detectors are in a stop detection state; When the movable detection box travels along the detection track to the detection position, it triggers the timer to start timing, so that the traveling wheels stop rotating. At the same time, it triggers the detection heads of the corresponding detectors to extend out along the through holes and start the detection work. Until the timer timing ends, the movable detection box continues to travel along the detection track. If a fault signal in the switch cabinet is detected by the detector at the detection position, it triggers the positioning part to work, so that the detection heads of the detectors remain in the state of extending out along the through holes, and the corresponding detectors continue to detect until the fault signal is eliminated.

[0014] Preferably, after detecting fault information at a certain detection position and the fault information has not been eliminated during the detection interval time of this detection position, when the movable detection box moves to the next detection position, the corresponding detector will automatically trigger a detection once.

[0015] The beneficial effects of the present invention: There is a detection track provided on the inner wall of the switch cabinet. A plurality of detectors are arranged in the movable detection box. A plurality of through holes for the detectors to pass through are provided on the outer side of the movable detection box. A cleaning part is arranged in the through holes. When the detection heads of the detectors are completely retracted into the through holes, the detectors are in a stop detection state. When the movable detection box travels along the detection track to the detection position, it triggers the timer to start timing, so that the traveling wheels stop rotating. At the same time, it triggers the detection heads of the corresponding detectors to extend out along the through holes and start the detection work. Until the timer timing ends, the movable detection box continues to travel along the detection track, thus completing a comprehensive fault detection. There is no need to repeatedly arrange multiple detection sensors, nor to always maintain the detection working state. And compared with the method of pumping air in the cabinet and detecting the sampled gas, the detection is more comprehensive and effective. When a fault signal in the switch cabinet is detected by the detector at the detection position, it triggers the positioning part to work, so that the detection heads of the detectors remain in the state of extending out along the through holes, and the corresponding detectors continue to detect until the fault signal is eliminated, which is beneficial for further safety protection. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a top view structural schematic diagram of the detection track and the positioning slider of the present invention; Figure 3 It is a front view structural schematic diagram of the interior when the mobile detection box of the present invention is moved to the detection position; Figure 4 It is a top view structural schematic diagram when the mobile detection box of the present invention is moved to the detection position; Figure 5 It is a structural schematic diagram of the present invention when the tail plate is in the initial closed state; Figure 6 It is a structural schematic diagram 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; Figure 7 It is a structural schematic diagram of the present invention when the tail plate is in the unfolded state perpendicular to one side of the bottom end of the detector; Figure 8 It is a structural schematic diagram of the present invention when the mobile detection box is moved to the next detection position and the movable end of the telescopic rod is inserted into the positioning hole; Figure 9 It is a structural schematic diagram of the present invention when the mobile detection box is moved to the next detection position and the telescopic rod is reset.

[0018] The labels in the figure are: 100, switch cabinet; 1, detection track; 2, mobile detection box; 21, through hole; 22, opening door; 3, walking wheel; 4, driving part; 5, detector; 51, positioning hole; 6, positioning part; 7, positioning slider; 71, chute; 711, flange; 72, positioning block; 721, notch; 8, positioning sensor; 9, bump; 10, stop block; 11, tail plate. Detailed implementation manners

[0019] In order to make the purpose, technical solutions and advantages of the present invention clearer and more understandable, the following further details the present invention in combination with specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0021] As Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, a high-voltage switchgear fault detection device is provided inside the switchgear 100, which includes a detection track 1 provided on the inner wall of the switchgear 100. A plurality of detection positions are arranged on the detection track 1. A traveling wheel 3 is rotatably connected inside the moving detection box 2. A driving part 4 for driving the rotation of the traveling wheel 3 is provided inside the moving detection box 2. The traveling wheel 3 abuts against the detection track 1 to drive the moving detection box 2 to travel along the detection track 1. A plurality of detectors 5 are arranged through the moving detection box 2. A plurality of through holes 21 are formed on the outer side of the moving detection box 2. A cleaning part is provided in the through holes 21. When the detection heads of the detectors 5 are completely retracted into the through holes 21, the detectors 5 are in a stopped detection state. A timer electrically connected to the driving part 4 is provided inside the moving detection box 2. When the moving detection box 2 travels to a detection position, the timer is triggered to start timing, so that the traveling wheel 3 stops rotating, and at the same time, the detection heads of the corresponding detectors 5 are triggered to protrude along the through holes 21 and start the detection work until the timer finishes timing. The moving detection box 2 continues to travel along the detection track 1. A positioning part 6 is provided beside the detector 5 inside the moving detection box 2. When a fault signal inside the switchgear 100 is detected by the detector 5, the positioning part 6 is triggered to work to limit the detector 5 so that the detection heads of the detector 5 remain in the state of protruding along the through holes 21.

[0022] Based on the existing structure of the high-voltage switchgear 100, the present invention is provided with a detection track 1 on the inner wall of the switchgear 100, and a plurality of detection positions are arranged on the detection track 1. Preferably, as Figure 1As shown in the figure, the detection track 1 is arranged on the inner side wall of the side of the switch cabinet 100, that is, on the inner panel, without affecting the front door opening and operation. The detection track 1 can be designed in a serpentine shape from top to bottom. The detection position is located on the horizontal part of the detection track 1. A walking wheel 3 is rotatably connected inside the moving detection box 2. A driving part 4 for driving the walking wheel 3 to rotate is arranged inside the moving detection box 2. Specifically, the driving part 4 can adopt existing conventional components such as a reduction motor and a rotary motor, and then through existing conventional transmission mechanisms such as a belt pulley structure, a sprocket structure, and a gear structure, the transmission of the walking wheel 3 is realized. The walking wheel 3 abuts against the detection track 1 to drive the moving detection box 2 to move along the detection track 1. A plurality of detectors 5 are arranged inside the moving detection box 2. Specifically, the detector 5 includes one or more of a temperature sensor, a humidity sensor, a dust monitor, and an SF6 (sulfur hexafluoride) gas monitor, which are used to monitor the temperature and humidity inside the cabinet to avoid faults such as flashover caused by abnormal temperature and condensation inside the cabinet. The dust monitor can adopt existing conventional dust monitors, laser particle counters, etc., which are used to monitor the dust concentration inside the cabinet to avoid the decline of insulation performance. SF6 (sulfur hexafluoride) is a common insulating gas in circuit breakers. The SF6 gas monitor can adopt existing conventional sulfur hexafluoride detectors to avoid risks such as gas leakage. For example, a temperature sensor, a humidity sensor, a dust monitor, and an SF6 gas monitor can be vertically arranged inside the moving detection box 2, with a total of four detectors 5, which are respectively arranged on the upper and lower sides inside the moving detection box 2. The detectors 5 on the same side are arranged in a front-back offset manner, and the detectors 5 on the upper and lower sides are arranged in a symmetric position; A plurality of through holes 21 for the detectors 5 to pass through are opened on the outer side of the moving detection box 2, and the detectors 5 and the moving detection box 2 can be connected through existing conventional elastic components such as springs in the middle, so as to drive the detection heads of the detectors 5 to completely retract into the through holes 21. A cleaning part is arranged inside the through holes 21. The cleaning part 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, as Figure 9As shown, the detector 5 is in a stopped detection state, and a timer electrically connected to the driving part 4 is provided in 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, and at the same time, the detection head of the corresponding detector 5 is triggered to pass through the through-hole 21, and the detection work is started. Until the timer ends, the mobile detection box 2 continues to move along the detection track 1, and a positioning part 6 is provided on the side of the detector 5 in the mobile detection box 2. Therefore, the mobile detection box 2 periodically moves along the detection track 1 and stops intermittently at each detection position. According to the common fault experience of each detection position in the cabinet, the required fault detection is turned on. After the timed detection, the mobile detection box 2 continues to move along the detection track 1, so as to complete the comprehensive fault detection, without repeatedly arranging multiple detection sensors, and without always keeping the detection working state, and the detector 5 is provided with a positioning part 6 on the side of the detection box 5. In the process of switching working states from top to bottom of 21, the cleaning unit cleans the detection head of the detector 5 at the same time to prevent the accumulation of dust, dirt and other impurities, which will affect the detection sensitivity and measurement accuracy. Moreover, compared with the method of extracting air in the cabinet and detecting the sampled gas, the detection is more comprehensive and effective. If a fault signal in the switch cabinet 100 is detected by the detector 5 at the detection position, the fault signal here means that the parameter detected by the detector 5 exceeds the preset safety range. For example, the temperature sensor and the humidity sensor detect that the temperature and humidity values ​​in the cabinet exceed the preset safety temperature range and safety humidity range, and the dust monitor detects that the dust concentration in the cabinet exceeds the preset safety dust concentration range, etc. At this time, the positioning unit 6 is triggered to work, which is used 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, that is, when the mobile detection box 2 continues to move along the detection track 1, as Figure 6 As shown, the working state of the corresponding detector 5 that detects the fault signal is always maintained, and continuous monitoring is performed until the fault signal is released, which is beneficial to further safety protection.

[0023] In an embodiment of the present invention, optionally, Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the outer side of the through-opening 21 is rotatably connected with a door opening 22, and the rotating connection may be connected with an elastic component such as a torsion spring, so that when the detection head of the detector 5 is fully retracted into the through-opening 21, the door opening 22 rotates to close the outer side of the through-opening 21, and when the detection head of the detector 5 pushes the door opening 22 to rotate and open, it triggers the corresponding detector 5 to start the detection work.

[0024] Among them, optionally, existing conventional components such as physical push switches, photoelectric trigger switches, etc. can be provided at the door opening 22, and 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 disconnected, and the detector 5 is in a stop detection state; when the door opening 22 is opened, the switch at the door opening 22 is connected, and the detector 5 starts detection.

[0025] In an embodiment of the present invention, optionally, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 shown, a positioning slider 7 is provided on the detection position. Preferably, the positioning slider 7 is slidably connected to the detection track 1. As Figure 2 shown, the positioning slider 7 is slidably connected to the front end of the detection track 1, and the rear end of the detection track 1 is for the walking wheel 3 to abut and walk. A positioning bolt can be connected to the positioning slider 7, so that the positioning slider 7 can be freely pushed to slide to different positions along the detection track 1. After positioning, by tightening the positioning bolt, one end of the positioning bolt abuts against the detection track 1 to lock the position of the positioning slider 7. Symmetrically arranged chutes 71 are respectively opened on the upper and lower sides of the positioning slider 7, and the chutes 71 on the same side are arranged in a front-back dislocation manner. Positioning blocks 72 are slidably connected in the chutes 71. The left and right sides of the positioning blocks 72 are designed with inclined end faces. A plurality of detectors 5 respectively pass through the upper side and the lower side of the moving detection box 2. By pushing the positioning blocks 72 to slide to the front end or the rear end in the chutes 71, for example, when manually pushing the positioning blocks 72 to the front end in the chutes 71, the positions of the positioning blocks 72 correspond to the positions of the detectors 5 one by one, and when manually pushing the positioning blocks 72 to the rear end in the chutes 71, the positions of the positioning blocks 72 are front-back dislocated from the positions of the detectors 5. Thus, the front-back positions of the positioning blocks 72 can be freely adjusted on the positioning slider 7 as needed, so that when the moving 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 penetrate out along the through holes 21 and start the detection work.

[0026] Among them, optionally, as Figure 2 shown, flanges 711 can be elastically connected to both sides in the chutes 71, and notches 721 can be relatively opened on both sides of the positioning blocks 72. During the front-back movement of the positioning blocks 72, the flanges 711 are pushed to retract inward until the positions of the notches 721 correspond to the positions of the flanges 711 when the positioning blocks 72 move in place front and back, so that the flanges 711 are inserted into the notches 721 to play a better limiting role.

[0027] Among them, optionally, the timer can adopt existing conventional components such as a timing switch, which can open the circuit, interrupt the current, or cause the current to flow to other circuits within a certain period. From the triggering function, it is mainly divided into mechanical timing switches, electronic timing switches, etc. Optionally, a positioning sensor 8 can be provided in the mobile detection box 2. More preferably, the positioning sensor 8 is provided on both sides of the front end inside the mobile detection box 2, and bumps 9 are provided on both sides of the front end of the positioning block 72. The positioning sensor 8 can adopt existing conventional components such as a distance sensor and is electrically connected to the timer, while the timer is electrically connected to the power supply wiring circuit of the driving part 4. Thus, when the mobile detection box 2 walks to the detection position, that is, when it moves to a position directly opposite the bumps 9 through the two-sided positioning sensors 8, the positioning block 72 pushes the bottom end of the corresponding detector 5. At the same time, when the distance sensed by the positioning sensor 8 is less than the preset value, the timer is triggered to start working, that is, the power supply wiring circuit of the driving part 4 is disconnected, and the traveling wheels 3 stop rotating until the timer finishes timing, and then the mobile detection box 2 continues to walk along the detection track 1.

[0028] Among them, the actual moving speed of the mobile detection box 2 is relatively slow, which is conducive to stable positioning detection.

[0029] Among them, optionally, stoppers 10 can also be connected to both ends of the detection track 1 to prevent the mobile detection box 2 from sliding out of the track. More preferably, existing conventional components such as a travel switch can be provided on the side end of the stopper 10 and are electrically connected to the driving part 4. Thus, when the mobile detection box 2 walks to the stoppers 10 at both ends, the travel switch is triggered, causing the traveling wheels 3 to switch the forward and reverse rotations, so that the mobile detection box 2 immediately or after an intermittent time continues to walk towards the other end of the detection track 1, realizing periodic cyclic fault detection.

[0030] More preferably, a fixed positioning slider 7 can also be provided beside the stopper 10, and no bumps 9 are provided on the positioning slider 7. Then, only during the intermittent time when the mobile detection box 2 moves to the stopper 10, the positioning block 72 is used to push the bottom end of the corresponding detector 5 and start the corresponding conventional fault detection.

[0031] In specific applications, usually, humidity detection is only enabled at the bottom position of the detection track 1, SF6 detection is only enabled at a position near the circuit breaker on the detection track 1, and temperature and dust detection are enabled at other conventional positions on the detection track 1.

[0032] In the embodiments of the present invention, optionally, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9As shown, the positioning portion 6 includes a telescopic rod fixedly arranged beside the detector 5, and a positioning hole 51 is opened at the side end of the detector 5 for the movable end of the telescopic rod to extend and pass through. 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 pass through the positioning hole 51, so that the detection head of the detector 5 keeps passing through the through-hole 21, that is, the working state of the corresponding detector 5 that detects the fault signal is always maintained, and the monitoring is continued until the fault signal is released, the detector 5 is reset, and the detection is stopped.

[0033] In an embodiment of the present invention, optionally, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, one side of the movable end of the telescopic rod is designed with an inclined end surface. When the movable end of the telescopic rod is extended, the inclined end surface thereof pushes against the positioning hole 51, driving the bottom end of the detector 5 to move away from the positioning block 72. One side of the bottom end of the detector 5 is rotatably connected to the tail plate 11, as shown in FIG. Figure 3 , Figure 5 As shown, the tail plate 11 is in an initial retracted state in which it is rotated against one side of the bottom end of the detector 5. Specifically, one side of the bottom end of the detector 5 may be connected to a rotating cylinder, a rotating motor and other components to drive the tail plate 11 to rotate. The bottom end of the detector 5 and the tail plate 11 may also be provided with existing conventional components such as a travel switch. For example, the travel switch is located at the two side edges of the bottom end of the detector 5, and when the mobile detection box 2 moves to the detection position, 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 will not interfere with triggering the travel switch. If the detector 5 does not detect a fault signal in the cabinet, the mobile detection box 2 continues to move after the interval time. At this time, even if the travel switch is triggered, the tail plate 11 is in the initial retracted state, so that the tail plate 11 remains motionless. If the detector 5 detects a fault signal in the cabinet, as shown in FIG. Figure 6 , Figure 7As shown, the corresponding tail plate 11 is triggered to rotate to an expanded state perpendicular to the bottom side of the detector 5. At this time, the travel switch at the bottom end of the tail plate 11 and the travel switch at the bottom end of the detector 5 are at the same horizontal position, and the movable end of the telescopic rod is inserted into the positioning hole 51. If the fault signal is eliminated during the intermittent time, it means that it may be a false detection. At this time, the mobile detection box 2 continues to move, and the positioning block 72 will resist and trigger the travel switch at the bottom end of the detector 5, triggering the tail plate 11 to rotate and reset to the initial folded state. If the fault signal is not eliminated during 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 move. Figure 8 As shown, on the one hand, the corresponding detector 5 continues to detect, and on the other hand, since the bottom end of the detector 5 moves away from the positioning block 72, the travel switch at the bottom end of the detector 5 will not be triggered, and the tail plate 11 maintains the unfolded state. In this way, when the mobile detection box 2 moves to the next detection position, even if the fault signal is eliminated, as shown in FIG. Figure 9 As shown, the telescopic rod is reset and moved away from the positioning hole 51, but the tail plate 11 still maintains the expanded state, so that the positioning block 72 pushes the tail plate 11 or the bottom of the detector 5, pushing the detection head of the detector 5 to pass through the through-hole 21, and starting the detection work until the positioning block 72 abuts against the corresponding middle position of the bottom end of the detector 5 or the middle position of the bottom end of the tail plate 11, and then abuts against the travel switch triggered to one side, so that the tail plate 11 rotates to the initial folded state. Therefore, after the fault information is detected at a certain detection position, and the fault information is not eliminated within the detection interval time of the detection position, the detector 5 corresponding to the next detection position will automatically trigger a detection, which is beneficial to further safety protection.

[0034] The present invention also provides a high-voltage switch cabinet fault detection method, comprising the following steps: A detection track 1 is provided on the inner wall of the switch cabinet 100, a plurality of detectors 5 are inserted into the mobile detection box 2, a plurality of through-holes 21 for the detectors 5 to be inserted are provided on the outer side of the mobile detection box 2, a cleaning portion is provided in the through-holes 21, and when the detection head of the detector 5 is completely retracted into the through-holes 21, the detector 5 is in a stop detection state; When the mobile detection box 2 moves along the detection track 1 to the detection position, the timer is triggered to stop the running wheel 3 from rotating, and at the same time, the detection head of the corresponding detector 5 is triggered to pass through the through-opening 21 and start the detection work until the timer ends. The mobile detection box 2 continues to move 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 through the through-opening 21, and the corresponding detector 5 continues to detect until the fault signal is relieved.

[0035] Preferably, after a fault message is detected at a certain detection position and the fault message is not eliminated during the detection interval of this detection position, when the mobile detection box 2 moves to the next detection position, the corresponding detector 5 will automatically trigger a detection once.

[0036] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is exemplary only and is not intended to imply that the scope of the invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

Claims

1. A high-voltage switch cabinet fault detection device, arranged in a switch cabinet (100), characterized in that: include: A detection track (1) is arranged on the inner wall of the switch cabinet (100), and a plurality of detection positions are arranged on the detection track (1); A mobile detection box (2), wherein a running wheel (3) is rotatably connected inside the mobile detection box (2), a driving unit (4) for driving the running wheel (3) to rotate is provided inside the mobile detection box (2), and the running wheel (3) is in contact with the detection track (1) and is used to drive the mobile detection box (2) to move along the detection track (1); A plurality of detectors (5) are arranged in the mobile detection box (2), a plurality of through openings (21) are provided on the outer side of the mobile detection box (2), a cleaning part is arranged in the through opening (21), when the detection head of the detector (5) is completely retracted into the through opening (21), the detector (5) is in a stop detection state, a timer electrically connected to the driving part (4) is arranged in the mobile detection box (2), when the mobile detection box (2) moves to the detection position, the timer is triggered to stop the running wheel (3), and at the same time, the detection head of the corresponding detector (5) is triggered to pass through the through opening (21), and the detection work is started, until the timer ends, and the mobile detection box (2) continues to move along the detection track (1); A positioning portion (6) is provided in the mobile detection box (2) beside the detector (5). When the detector (5) detects a fault signal in the switch cabinet (100), the positioning portion (6) is triggered to operate, and is used to limit the detector (5) so that the detection head of the detector (5) remains in a state of passing through the through opening (21).

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

3. A high-voltage switch cabinet fault detection device according to claim 1, characterized in that: The outer side of the through-opening (21) is rotatably connected with an opening door (22). When the detection head of the detector (5) is completely retracted into the through-opening (21), the opening door (22) rotates to close the outer side of the through-opening (21). When the detection head of the detector (5) pushes the opening door (22) to rotate and open, it triggers the corresponding detector (5) to start detection work.

4. A high-voltage switch cabinet fault detection device according to claim 1, characterized in that: The cleaning portion is a cleaning bristle arranged around the inner circle of the through opening (21).

5. A high-voltage switch cabinet fault detection device according to claim 1, characterized in that: The detection position is provided with a positioning slide block (7), and the upper and lower sides of the positioning slide block (7) are respectively provided with slide grooves (71), and the slide grooves (71) on the same side are arranged in a front-to-back staggered manner. A positioning block (72) is slidably connected in the slide groove (71), and the left and right sides of the positioning block (72) are designed with inclined end surfaces. A plurality of detectors (5) are respectively arranged on the upper side and the lower side of the mobile detection box (2). By pushing the positioning block (72) to slide to the front end or the rear end in the slide 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 end position of the corresponding detector (5), and the bottom end of the corresponding detector (5) is pushed by the positioning block (72) so that the detection head of the corresponding detector (5) passes through the through opening (21).

6. A high-voltage switch cabinet fault detection device according to claim 5, characterized in that: The positioning slide block (7) is slidably connected to the detection track (1), and a positioning bolt is connected to the positioning slide block (7) for locking the position of the positioning slide block (7).

7. A high-voltage switch cabinet fault detection device according to claim 5, characterized in that: The positioning portion (6) comprises a telescopic rod fixedly arranged beside the detector (5), and a positioning hole (51) is provided at the side end of the detector (5) for the movable end of the telescopic rod to extend and pass through.

8. A high-voltage switch cabinet fault detection device according to claim 7, characterized in that: One side of the movable end of the telescopic rod is designed with an inclined end face. When the movable end of the telescopic rod is extended, 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). 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 in which it is rotated against the bottom end of the detector (5). When a fault signal in the switch cabinet (100) is detected by the detector (5), the tail plate (11) is triggered to rotate into an expanded 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 bottom end of the expanded tail plate (11) slides over, triggering the tail plate (11) to rotate into the initial retracted state.

9. A method for detecting faults in a high-voltage switch cabinet, the method using the high-voltage switch cabinet fault detection device according to any one of claims 1 to 8 for detection, characterized in that: The following steps are involved: A detection track (1) is provided on the inner wall of the switch cabinet (100), a plurality of detectors (5) are inserted into the mobile detection box (2), a plurality of through-holes (21) for the detectors (5) to be inserted are opened on the outer side of the mobile detection box (2), a cleaning portion is provided in the through-holes (21), and when the detection head of the detector (5) is completely retracted into the through-holes (21), the detector (5) is in a stop detection state; When the mobile detection box (2) moves along the detection track (1) to the detection position, the timer is triggered to stop the running wheel (3) from rotating, and the detection head of the corresponding detector (5) is triggered to pass through the through opening (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, the positioning part (6) is triggered to work so that the detection head of the detector (5) remains in the state of passing through the through opening (21), and the corresponding detector (5) continues to detect until the fault signal is cleared.

10. A high-voltage switch cabinet fault detection method according to claim 9, characterized in that: After fault information is detected at a certain detection position, and the fault information is not eliminated within the detection interval of the detection position, when the mobile detection box (2) moves to the next detection position, the corresponding detector (5) will automatically trigger a detection.

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