A photovoltaic cable fault detection device

Abstract

The application belongs to the field of cable fault monitoring, and particularly relates to a photovoltaic cable fault detection device, which comprises a detection mechanism and a marking mechanism. The marking mechanism is used for marking the fault point of the photovoltaic cable, and is arranged on the detection mechanism. The marking mechanism comprises a fixed block, a sliding block and a driving device. The fixed block is fixed on the detection mechanism, the sliding block is in sliding connection with the fixed block, one end of the sliding block away from the fixed block is provided with a marking block, and the driving device drives the sliding block to slide, so that the marking block abuts against the surface of the photovoltaic cable. The detection mechanism is electrically connected with the driving device, and is used for detecting the temperature of the photovoltaic cable during work. The application has a simple structure, and can mark the fault point of the cable, thereby saving the cost.

Description

Technical Field

[0001] This application belongs to the field of cable fault monitoring, and specifically relates to a photovoltaic cable fault detection device. Background Technology

[0002] Photovoltaic cables are special cables designed for use in solar photovoltaic power generation systems. They are designed for harsh outdoor environments (such as high temperatures, ultraviolet radiation, and acid / alkali corrosion) and are primarily used to connect solar panels, inverters, and other photovoltaic system components to transmit DC power. Due to the harsh environment in which photovoltaic cables operate, it is frequently necessary to perform fault detection on the cables in operation to ensure they are functioning properly and to improve safety.

[0003] In related technologies, cable fault monitoring mainly adopts the following method: when the cable is energized, the cable fault monitoring instrument monitors the cable for faults, and when a fault is detected, a laser marking device is used to mark the fault location on the cable.

[0004] Regarding the aforementioned technologies, although laser encoders can mark faults in cables, the initial investment cost of laser encoders is high, and laser marking can easily damage the cable surface. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a photovoltaic cable fault detection device that can mark the fault points of the cable using a simple structure. Compared with laser marking, it will not damage the cable surface and saves money.

[0006] A photovoltaic cable fault detection device includes: Testing and marking agencies; The marking mechanism is used to mark the fault points of the photovoltaic cable, and the marking mechanism is disposed on the detection mechanism; The marking mechanism includes a fixed block, a sliding block, and a driving device. The fixed block is fixed on the detection mechanism, and the sliding block is slidably connected to the fixed block. A marking block is provided at the end of the sliding block away from the fixed block. The driving device drives the sliding block to slide, so that the marking block abuts against the surface of the photovoltaic cable. The detection mechanism is electrically connected to the driving device, and the detection mechanism is used to detect the temperature of the photovoltaic cable when it is working.

[0007] Optionally, the testing organization includes: An upper detection element and a lower detection element are provided, with one end of the upper detection element and the lower detection element fixedly connected, and the other end of the upper detection element and the lower detection element having a fixing element. A temperature sensor is provided inside the lower detection element.

[0008] Optionally, the drive device is connected to a control switch, and the control switch is connected to a temperature sensor.

[0009] Optionally, the marking block has an injection hole, and the injection hole is provided with a sealing cap, which is used to close the injection hole.

[0010] Optionally, the marker block and the sliding block are detachably connected.

[0011] Optionally, it may also include a first guide and a second guide, which are located on both sides of the detection mechanism.

[0012] Optionally, the first guide includes a fixed rod and a telescopic rod, the telescopic rod being inserted into the fixed rod, and the fixed rod being provided with a height adjustment component.

[0013] Optionally, the height adjustment component includes a fixing bolt and several screw holes. The screw holes are formed on the telescopic rod, and the fixing rod has an insertion hole. The fixing bolt passes through the insertion hole and is inserted into the screw hole.

[0014] The beneficial effects of this invention are: In use, the photovoltaic cable is first passed through the first guide, the detection device, and the second guide in sequence. Workers can then use the handheld photovoltaic cable fault detection device to monitor the cable along its laying direction. When the temperature sensor detects an abnormal temperature, a sliding block is activated, moving downwards to bring a marker block into contact with the cable, thus marking the fault location. The sliding block then resets, and the process continues until the entire cable has been inspected. Finally, the connection between the other end of the cable and the power supply is severed, completing the monitoring of the entire cable. Compared to existing technologies, this application uses a simpler structure to mark cable fault points. Moreover, compared to laser printing, it does not cause any damage to the cable surface and saves money. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a photovoltaic cable fault detection device according to the present invention; Figure 2 This is a partial structural diagram of a photovoltaic cable fault detection device according to the present invention.

[0016] Explanation of reference numerals in the attached drawings: 1. Detection mechanism; 2. Marking mechanism; 3. Fixed block; 4. Sliding block; 5. Drive device; 6. Marking block; 7. Upper detection component; 8. Lower detection component; 9. Fixed component; 10. First guide component; 11. Second guide component; 12. Fixed rod; 13. Telescopic rod; 14. Fixing bolt. Detailed Implementation

[0017] like Figure 1 and Figure 2As shown, a photovoltaic cable fault detection device includes: Testing agency 1 and marking agency 2; The marking mechanism 2 is used to mark the fault points of the photovoltaic cable, and the marking mechanism 2 is set on the detection mechanism 1; The marking mechanism 2 includes a fixed block 3, a sliding block 4, and a driving device 5. The fixed block 3 is fixed on the detection mechanism 1. The sliding block 4 is slidably connected to the fixed block 3. A marking block 6 is provided at the end of the sliding block 4 away from the fixed block 3. The driving device 5 drives the sliding block 4 to slide, so that the marking block 6 abuts against the surface of the photovoltaic cable. The detection mechanism 1 is electrically connected to the driving device 5. The detection mechanism 1 is used to detect the temperature of the photovoltaic cable when it is working.

[0018] Testing agency 1 includes: The upper detection element 7 and the lower detection element 8 are fixedly connected at one end, and the other end of the upper detection element 7 and the lower detection element 8 is provided with a fixing element 9. A temperature sensor is provided inside the lower detection element 8.

[0019] One end of the upper detection component 7 and the lower detection component 8 is hinged. The upper detection component 7 and the lower detection component 8 are fixed by a fixing component 9, which can be a bolt. During operation, the upper detection component 7 and the lower detection component 8 are fixed. If adjustment is required, the fixing component 9 is pulled out and the upper detection component 7 is rotated to change the size of the circular shape between the upper detection component 7 and the lower detection component 8. After the size adjustment is completed, the fixing component 9 is inserted to fix it. When the upper detection component 7 and the lower detection component 8 are in contact, the shape is circular to accommodate cables of different sizes.

[0020] Specifically, in this embodiment, both the upper detection element 7 and the lower detection element 8 are semi-circular. One end of the upper detection element 7 and the lower detection element 8 are rotatably connected. A support column is also fixedly connected to the lower detection element 8, and the bottom of the support column can be connected to the ground. The height of the support column is adjustable. The lower detection element 8 is under vacuum, and the temperature sensor is located inside the lower detection element 8.

[0021] It also includes a first guide member 10 and a second guide member 11, which are located on both sides of the detection mechanism 1.

[0022] The first guide member 10 includes a fixed rod 12 and a telescopic rod 13. The telescopic rod 13 is inserted into the fixed rod 12. The fixed rod 12 is provided with a height adjustment component. The second guide member 11 has the same structure as the first guide member 10.

[0023] The height adjustment component includes a fixing bolt 14 and several screw holes. The screw holes are opened on the telescopic rod 13, and the fixing rod 12 has an insertion hole. The fixing bolt 14 passes through the insertion hole and is inserted into the screw hole.

[0024] Specifically, the detection mechanism 1 has guide members on both sides, namely the first guide member 10 and the second guide member 11. The first guide member 10 is located between the roller and the marking mechanism 2. The guide member includes a guide ring, a fixed rod 12 and a telescopic rod 13. The guide ring is fixedly connected to the telescopic rod 13. The fixed rod 12 has a slot adapted to the telescopic rod 13. The telescopic rod 13 is inserted into the slot. Since the fixed rod 12 has multiple screw holes, the screw holes are evenly distributed along the length of the fixed rod 12. For example, one screw hole is opened every 1 cm along the length. When the height needs to be adjusted, the depth of the telescopic rod 13 inserted into the slot is changed to adjust to a suitable height. Then the insertion hole and the screw hole are aligned, and the fixing bolt 14 is inserted into the screw hole through the insertion hole.

[0025] The first guide member 10 and the second guide member 11 work together to adjust the position of the cable within the monitoring mechanism. The first guide member 10 and the second guide member 11 support the cable, and their heights are adjustable, thus regulating the cable's position within the monitoring mechanism and preventing contact between the cable and the upper or lower detection element 7 or 8. Additionally, the inner walls of the first guide member 10 and the second guide member 11 are lined with pads to prevent scratching the cable sheath.

[0026] The height adjustment component can also have the following structure: the telescopic rod 13 has several insertion holes, the fixed rod 12 has a groove, a spring is installed in the groove, one end of the spring is fixedly connected to the bottom of the groove, and the other end is connected to the fixed rod 12. The fixed rod 12 is inserted into the insertion hole. When the height needs to be adjusted, the fixed rod 12 is pressed, causing it to retract into the groove. Then the telescopic rod 13 is moved up and down. When the telescopic rod 13 is moved, the fixed rod 12 automatically pops out when the insertion hole and the groove are aligned, without the need for manual fixing.

[0027] The drive unit 5 is connected to the control switch, and the control switch is connected to the temperature sensor.

[0028] Specifically, the temperature detected by the temperature sensor is transmitted to the control switch. The control switch has a temperature value set inside. When the detected temperature is greater than the temperature value, the control switch is activated. The control switch controls the sliding block 4 to move downward. At this time, as the sliding block 4 moves downward, the marking block 6 also moves downward. Since the photovoltaic cable passes through the detection mechanism 1, that is, it is located between the upper detection element 7 and the lower detection element 8, the marking block 6 will make contact with the surface of the photovoltaic cable. The marking block 6 will leave a mark on the surface of the photovoltaic cable, marking the fault location.

[0029] The marking block 6 has an injection hole, and a sealing cap is provided on the injection hole to seal the injection hole.

[0030] Specifically, the marking block 6 stores ink for marking. The lower end of the marking block 6 is an arc-shaped block, and an ink pad is located on the side of the arc-shaped block closest to the photovoltaic cable. A small hole is formed between the ink pad and the marking block 6, allowing ink to flow onto the ink pad through the hole. During long-term use, as the ink in the marking block 6 decreases, it can be replenished through the injection hole. It is worth noting that the ink used in this application needs to be a fast-drying ink with a certain viscosity, such as a thixotropic ink.

[0031] Meanwhile, considering that the ink will dry out and the ink pad will harden when it is not used for a long time, the fixing part 9 can be opened and the upper detection part 7 can be rotated. At this time, the marking block 6 can be easily operated by adding warm water or oil to soften the ink pad so that it can work normally before closing the upper detection part 7.

[0032] The marker block and the slider block are detachably connected.

[0033] Specifically, the marker block and the sliding block can be detachably connected. When there is no ink on the marker block, the marker block can be removed directly, replaced with new ink, and then reinstalled. The installation structure of the marker block and the sliding block can be set as a snap-on structure.

[0034] When using this device, the photovoltaic cable is first passed through the second guide, the detection device, and the first guide in sequence. When the temperature sensor detects an abnormal temperature, the sliding block is activated. The sliding block moves downward so that the marking block comes into contact with the cable, thereby marking the fault location. Then the sliding block is reset to complete the monitoring of the entire cable.

[0035] Alternatively, the first guide component, the second guide component, and the detection mechanism can be fixed on a fixed plate. The fixed plate is equipped with pulleys, which are connected to a motor. The motor rotates to drive the entire photovoltaic cable fault detection device, thereby achieving automatic detection.

[0036] 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 protection of this application is limited to these examples; under the concept of this application, 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 different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0037] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A photovoltaic cable fault detection device, characterized in that, include: Testing agency (1) and marking agency (2); The marking mechanism (2) is used to mark the fault points of the photovoltaic cable, and the marking mechanism (2) is disposed on the detection mechanism (1); The marking mechanism (2) includes a fixed block (3), a sliding block (4), and a driving device (5). The fixed block (3) is fixed on the detection mechanism (1). The sliding block (4) is slidably connected to the fixed block (3). A marking block (6) is provided at one end of the sliding block (4) away from the fixed block (3). The driving device (5) drives the sliding block (4) to slide, so that the marking block (6) abuts against the surface of the photovoltaic cable. The detection mechanism (1) is electrically connected to the driving device (5). The detection mechanism (1) is used to detect the temperature of the photovoltaic cable when it is working.

2. The photovoltaic cable fault detection device as described in claim 1, characterized in that, The testing organization (1) includes: The upper detection element (7) and the lower detection element (8) are fixedly connected at one end, and the other end of the upper detection element (7) and the lower detection element (8) is provided with a fixing element (9). The lower detection element (8) is provided with a temperature sensor inside.

3. The photovoltaic cable fault detection device as described in claim 1, characterized in that, The drive device (5) is connected to the control switch, and the control switch is connected to the temperature sensor.

4. The photovoltaic cable fault detection device as described in claim 1, characterized in that, The marking block (6) has an injection hole, and a sealing cap is provided on the injection hole to close the injection hole.

5. The photovoltaic cable fault detection device as described in claim 1, characterized in that, The marker block (6) and the sliding block (4) are detachably connected.

6. The photovoltaic cable fault detection device as described in claim 1, characterized in that, It also includes a first guide (10) and a second guide (11), which are located on both sides of the detection mechanism (1).

7. A photovoltaic cable fault detection device as described in claim 6, characterized in that, The first guide member (10) includes a fixed rod (12) and a telescopic rod (13), the telescopic rod (13) being inserted into the fixed rod (12), and the fixed rod (12) being provided with a height adjustment component.

8. The photovoltaic cable fault detection device as described in claim 7, characterized in that, The height adjustment component includes a fixing bolt (14) and several screw holes. The screw holes are opened on the telescopic rod (13), and the fixing rod (12) has an insertion hole. The fixing bolt (14) passes through the insertion hole and is inserted into the screw hole.

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