A high-voltage cable operation and maintenance device

Abstract

The present invention discloses a high-voltage cable operation and maintenance device, which relates to the field of electrical fault testing and solves the problem that the existing high-voltage cable operation and maintenance device is difficult to perform segmented detection on cables in the air and the fault point judgment is not accurate and efficient enough when in use. The device comprises a machine body, a driving mechanism, an operation and maintenance mechanism and a filling mechanism. The machine body is provided with multiple groups of propellers, the driving mechanism comprises a hook rod and a driving wheel, the operation and maintenance mechanism comprises a detection needle, and the filling mechanism comprises a filling tube and a storage box. The present invention hangs the machine body on the cable through the hook rod, and the driving mechanism enables the driving wheel to drive the machine body to move along the cable. The operation and maintenance mechanism controls the detection needle to pass through the outer layer of the cable, and detects the voltage and current values ​​between the two groups of detection needles, so as to assist in judging the fault location and improve the detection accuracy and operation and maintenance efficiency. When the detection needle is pulled out, the filling colloid is injected into the perforated position through the filling tube by the filling mechanism to protect the rubber-coated cable.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical fault testing, in particular to a high-voltage cable operation and maintenance device. Background Art

[0002] High-voltage cables are a type of power cable used to transmit power between 1 kV and 1000 kV. They are primarily used for power transmission and distribution and are the vital arteries that keep a city running. Generally, short-distance high-voltage lines are buried underground, while long-distance ultra-high-voltage transmission lines are often installed on towers. 10 kV urban high-voltage distribution lines mostly use insulated conductors, but even with insulation, one or more porcelain jars are required to insulate the poles or towers. High-voltage transmission lines of 35 kV and above use bare conductors, which require more porcelain jars for insulation depending on the voltage level. To ensure the proper operation of transmission lines, regular maintenance of high-voltage cables is required.

[0003] Existing high-voltage cable operation and maintenance devices mostly use direct detection of cable voltage and current values ​​at the tower location to determine the operating status of the cable section. However, due to the long cable length between the two sets of towers, although this detection method can make an overall judgment, the error in judging the specific location of the faulty circuit is large, making it difficult to accurately locate the damaged circuit, and the efficiency of subsequent detection and maintenance is low. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-voltage cable operation and maintenance device that is convenient for segmented detection of cables in the air, improves the accuracy of fault point judgment and operation and maintenance efficiency, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A high-voltage cable operation and maintenance device, comprising a body, a driving mechanism, an operation and maintenance mechanism, and a filling mechanism, the body being provided with multiple sets of propellers, the driving mechanism comprising a hook rod fixedly mounted on the bottom of the body, the hook rod being rotatably connected to two sets of driving wheels for hanging the body on the cable through the hook rod, the driving wheels driving the body to move along the cable, the operation and maintenance mechanism comprising two sets of detection needles mounted in the body, for passing through the outer layer of the cable through the detection needles, detecting the voltage and current values ​​between the two sets of detection needles, and assisting in determining the fault location, the filling mechanism comprising a filling tube fixedly mounted on the outer wall of the detection needle, a storage box for storing filling colloid fixedly connected to the body, for injecting the filling colloid into the perforated position through the filling tube when the detection needle is pulled out for protection, thereby facilitating segmented detection of cables in the air and improving the accuracy of fault point determination and operation and maintenance efficiency.

[0006] Preferably, the operation and maintenance mechanism also includes a current transformer and a voltage transformer fixedly installed in the machine body, the wiring terminals of the current transformer and the voltage transformer are respectively located on both sides, the top of the detection needle is fixedly connected to a conductive wire, and the machine body is provided with a switching component for switching the connection status of the conductive wire and the wiring terminals of the current transformer and the voltage transformer. The machine body is provided with a driving component for synchronously controlling the detection needles on both sides to be inserted into the cable for detection, so that the voltage and current values ​​between the two groups of detection needles can be detected by passing the detection needle through the outer layer of the cable to assist in determining the fault location.

[0007] Preferably, the driving member includes a threaded sleeve fixedly installed in the body, the outer wall of the filling tube is provided with a threaded groove threadedly connected to the inner wall of the threaded sleeve, the top of the filling tube is coaxially fixedly connected to a first gear, a gear column meshing with the first gear is rotatably connected to the body, and a rotating member for synchronously driving the gear columns on both sides to rotate is provided in the body, so as to facilitate synchronous control of the detection needles on both sides to be inserted into the cable for detection.

[0008] Preferably, the filling mechanism also includes an output tube fixedly mounted on the storage box, a communicating groove connected to the output tube is provided in the first gear, the top of the communicating groove is rotatably connected to a rotating ring fixedly connected to the output tube, a plurality of groups of glue outlet tubes connected to the bottom end of the communicating groove are evenly provided in the filling tube, and a conveying member for conveying the colloid into the output tube is provided in the storage box, so that when the detection needle is pulled out, the filling colloid can be injected into the perforated position through the filling tube for protection.

[0009] Preferably, the rotating member includes a rotating column rotatably connected to the top of the body, a camera is fixedly connected to the side of the rotating column, an outer toothed ring is fixedly connected to the outer wall of the rotating column, a first motor is fixedly connected to the body, an output end of the first motor is coaxially fixedly connected to a second gear meshing with the outer toothed ring, the top of the gear column is coaxially fixedly connected to a third gear, a fourth gear rotatably connected to the body and meshing with the third gear, the fourth gear is coaxially fixedly connected to a fifth gear meshing with the outer toothed ring, the pitch circle radius of the fourth gear is smaller than the pitch circle radius of the fifth gear and the third gear, so as to synchronously drive the gear columns on both sides to rotate.

[0010] Preferably, the switching component includes a second motor fixedly installed in the machine body, the output end of the second motor is coaxially fixedly connected to a worm, two groups of switching disks are rotatably connected in the machine body, the two groups of switching disks are symmetrically distributed on both sides of the current transformer, a connecting shaft is coaxially fixedly connected between the two groups of switching disks, the outer wall of a group of switching disks close to the second motor is fixedly connected to a worm gear ring engaged with the worm, one end of the conductive wire is fixedly connected to a connecting block coaxially connected to the switching disk, the side of the switching disk is fixedly connected to a conductive block capable of being in contact with the terminal blocks of the current transformer and the voltage transformer, the conductive block is electrically connected to the connecting block, so as to facilitate switching the connection state of the conductive wire with the terminal blocks of the current transformer and the voltage transformer.

[0011] Preferably, the conveying member includes a conveying pump fixedly installed in the storage box, the input end of the conveying pump is connected to the input pipe connected to the storage box, and the output end of the conveying pump is connected to the middle of the output pipe, so as to facilitate the delivery of the colloid into the output pipe.

[0012] Preferably, the driving mechanism also includes a driving motor fixedly mounted on the hook rod, the output end of the driving motor is coaxially fixedly connected to the driving shaft, the two sets of driving wheels are coaxially fixedly connected to the outer wall of the driving shaft, the hook rod, the driving shaft, the filling tube and the driving wheel are all made of insulating ceramic material, which makes it convenient to hang the machine body on the cable through the hook rod, and the driving wheel drives the machine body to move along the cable.

[0013] Preferably, driving blades capable of assisting the body in flipping are provided on both sides of the body, so as to assist the body in flipping.

[0014] Preferably, the detection needle is made of high-resistance graphite material, which is convenient for reducing the current and voltage values ​​input into the body and detecting and judging the value of the electrical signal after the proportional voltage reduction.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention provides a high-voltage cable operation and maintenance device, which solves the problems that the existing high-voltage cable operation and maintenance devices are difficult to perform segmented detection on cables in the air, and the fault point judgment is not accurate and efficient enough when used. The machine body is hung on the cable by a bent hook rod, and the driving wheel drives the machine body to move along the cable through the driving mechanism. The detection needle is controlled by the operation and maintenance mechanism to pass through the outer layer of the cable, and the voltage and current values ​​between the two groups of detection needles are detected to assist in judging the fault location, thereby improving the detection accuracy and operation and maintenance efficiency. When the detection needle is pulled out, the filling colloid is injected into the perforated position through the filling tube by the filling mechanism to protect the entire rubber-coated cable. The device is easy to operate and stable in operation. It can continuously perform segmented detection along the surface of the cable, thereby accurately judging the fault point and improving the efficiency of cable operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the local structure of the driving mechanism of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the machine body of the present invention;

[0020] Figure 4 for Figure 3 Enlarged view of area A in the middle;

[0021] Figure 5 This is a schematic diagram of the partial structure of the filling mechanism of the present invention;

[0022] Figure 6 This is a schematic diagram of the partial structure of the operation and maintenance mechanism of the present invention;

[0023] Figure 7 for Figure 6 Enlarged view of area B in the middle;

[0024] Figure 8 This is a partial structural cross-sectional view of the filling mechanism of the present invention;

[0025] Figure 9 for Figure 8 Enlarged view of area C in the middle.

[0026] In the figure: 1-body; 2-propeller; 3-hook rod; 4-driving wheel; 5-detection needle; 6-filling tube; 7-storage box; 8-current transformer; 9-voltage transformer; 10-conductive wire; 11-switching element; 12-driving element; 13-threaded sleeve; 14-thread groove; 15-first gear; 16-gear column; 17-rotating element; 18-output pipe; 19-connecting groove; 20-rotating ring; 21-discharge hose; 22-output Delivery; 23-rotating column; 24-camera; 25-external gear ring; 26-first motor; 27-second gear; 28-third gear; 29-fourth gear; 30-fifth gear; 31-second motor; 32-worm; 33-switching disk; 34-worm gear ring; 35-connecting block; 36-conductive block; 37-delivery pump; 38-input pipe; 39-drive motor; 40-drive shaft; 41-drive blade; 42-connecting shaft. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1: Please refer to Figures 1-9 The figure shows a high-voltage cable operation and maintenance device, including a body 1, a driving mechanism, an operation and maintenance mechanism and a filling mechanism. The body 1 is provided with multiple sets of propellers 2. The driving mechanism includes a hook rod 3 fixedly mounted on the bottom of the body 1. The hook rod 3 is rotatably connected to two sets of driving wheels 4 for hanging the body 1 on the cable through the hook rod 3. The driving wheels 4 drive the body 1 to move along the cable. The operation and maintenance mechanism includes two sets of detection needles 5 installed in the body 1. The detection needles 5 are made of high-resistance graphite material and are used to pass through the outer layer of the cable through the detection needles 5 to detect the voltage and current values ​​between the two sets of detection needles 5 to assist in determining the fault location. The filling mechanism includes a filling tube 6 fixedly mounted on the outer wall of the detection needle 5. A storage box 7 for storing filling colloid is fixedly connected to the body 1 for storing filling colloid. When the detection needle 5 is pulled out, the filling colloid is injected into the perforated position through the filling tube 6 for protection.

[0029] The operation and maintenance mechanism also includes a current transformer 8 and a voltage transformer 9 fixedly installed in the body 1. The terminal blocks of the current transformer 8 and the voltage transformer 9 are located on both sides respectively. The top of the detection needle 5 is fixedly connected to a conductive wire 10. A switching component 11 is provided in the body 1 for switching the connection status of the conductive wire 10 with the terminal blocks of the current transformer 8 and the voltage transformer 9. A driving component 12 is provided in the body 1 for synchronously controlling the detection needles 5 on both sides to be inserted into the cable for detection.

[0030] The driving member 12 includes a threaded sleeve 13 fixedly installed in the body 1, and a threaded groove 14 is provided on the outer wall of the filling tube 6 and is threadedly connected to the inner wall of the threaded sleeve 13. The top of the filling tube 6 is coaxially fixedly connected to the first gear 15, and a gear column 16 meshing with the first gear 15 is rotatably connected in the body 1. A rotating member 17 is provided in the body 1 for synchronously driving the gear columns 16 on both sides to rotate.

[0031] The rotating member 17 includes a rotating column 23 rotatably connected to the top of the body 1, a camera 24 is fixedly connected to the side of the rotating column 23, an outer gear ring 25 is fixedly connected to the outer wall of the rotating column 23, a first motor 26 is fixedly connected inside the body 1, and the model of the first motor 26 is preferably YYHS-40. The output end of the first motor 26 is coaxially fixedly connected to a second gear 27 meshing with the outer gear ring 25, and the top of the gear column 16 is coaxially fixedly connected to a third gear 28. A fourth gear 29 meshing with the third gear 28 is rotatably connected to the body 1, and the fourth gear 29 is coaxially fixedly connected to a fifth gear 30 meshing with the outer gear ring 25. The pitch circle radius of the fourth gear 29 is smaller than the pitch circle radius of the fifth gear 30 and the third gear 28.

[0032] The switching member 11 includes a second motor 31 fixedly installed in the body 1. The model of the second motor 31 is preferably LD60 micro motor. The output end of the second motor 31 is coaxially fixedly connected to a worm 32. Two groups of switching disks 33 are rotatably connected in the body 1. The two groups of switching disks 33 are symmetrically distributed on both sides of the current transformer 8. A connecting shaft 42 is coaxially fixedly connected between the two groups of switching disks 33. The outer wall of a group of switching disks 33 close to the second motor 31 is fixedly connected to a worm gear ring 34 that meshes with the worm 32. One end of the conductive wire 10 is fixedly connected to a connecting block 35 that is coaxially rotatably connected to the switching disk 33. The side of the switching disk 33 is fixedly connected to a conductive block 36 that can be in contact with the terminal of the current transformer 8 and the voltage transformer 9. The conductive block 36 is electrically connected to the connecting block 35.

[0033] The driving mechanism also includes a driving motor 39 fixedly mounted on the hook rod 3. The model of the driving motor 39 is preferably an LD60 micro motor. The output end of the driving motor 39 is coaxially fixedly connected to the driving shaft 40. The two sets of driving wheels 4 are coaxially fixedly connected to the outer wall of the driving shaft 40. The hook rod 3, the driving shaft 40, the filling tube 6 and the driving wheel 4 are all made of insulating ceramic material. Both sides of the body 1 are provided with driving blades 41 that can assist the body 1 in flipping.

[0034] In this embodiment, the propeller 2 controls the body 1 to fly to the desired height. Figure 1 and attached Figure 2As shown in the figure, the cable is at the bending part of the hook rod 3, and the side flipping of the body 1 is controlled by driving the blade 41, and the cable fits against the inner wall of the hook rod 3 until the body 1 is completely flipped 180°. The driving wheel 4 rotates to the upper side of the cable, and the entire body 1 is suspended in the air by the cable, and the propeller 2 and the driving blade 41 stop running. Only the driving motor 39 drives the driving shaft 40 to make the driving wheel 4 roll on the cable, so that the purpose of the body 1 moving along with the cable guide can be achieved. At this time, the driving blades 41 on both sides are controlled to operate to reduce the swinging of the body 1, and the tip of the detection needle 5 always points to the axial position of the driving shaft 40, so that the detection needle 5 can be inserted into the middle of the cable for detection during the insertion process.

[0035] The first motor 26 controls the second gear 27 to drive the outer gear ring 25 to rotate, and the outer gear ring 25 drives the rotating column 23 and the fifth gear 30 to rotate. The fifth gear 30 drives the fourth gear 29 to make the third gear 28 drive the gear column 16 to rotate, so that the gear column 16 drives the first gear 15 to rotate continuously. In the process of the first gear 15 driving the filling tube 6 to rotate, it will rotate inside the threaded sleeve 13 through the thread groove 14, so that the filling tube 6 moves up and down during the rotation. The filling tube 6 drives the detection needle 5 to extend, and the tip of the detection needle 5 can be gradually inserted into the cable to detect the electrical signal. Since the detection needle 5 is made of high-resistance graphite material, it can effectively reduce the current and voltage values ​​to avoid damage to the equipment. At the same time, the electrical signal is transmitted to the current transformer 8 through the conductive wire 10, the connecting block 35 and the conductive block 36 for current detection. At this time, since the filling tube 6 is made of insulating ceramic material, conduction can be avoided.

[0036] By controlling the second motor 31 to drive the worm 32 to rotate, the worm 32 drives the worm gear ring 34 to rotate the switching disk 33 on one side, and the switching disks 33 on both sides are driven to rotate synchronously through the connecting shaft 42, so that the conductive block 36 can rotate and switch the connection state with the terminal of the current transformer 8 and the voltage transformer 9, so that the current value and voltage value of the cable section at the detection position can be detected respectively to determine the fault condition.

[0037] It is worth noting that: when inspecting a cable wrapped with insulating rubber on the outside, the detection needle 5 drives the bottom end of the filling tube 6 to be inserted into the inside of the insulating rubber. In the process of the first motor 26 driving the gear column 16 to rotate in the opposite direction, the detection needle 5 is pulled out, and the molten colloid can be output from the filling tube 6 to the pulled-out hole through the filling mechanism for filling and solidification. Moreover, since the insertion position of the detection needle 5 is at the bottom of the cable and inserted upward, the impact of external pollution entering the cable through the pores is relatively small at this time, and the colloid filling of the filling mechanism can more effectively protect the detection position. After the suspected fault point of the entire cable is inspected, the driving blade 41 on one side is started to drive the body 1 to deflect laterally, and in conjunction with the rotation of the propeller 2, the body 1 is rotated above the cable and drives the bending rod to release the contact with the cable, and the detection operation can be completed. The device is easy to operate and stable in operation. It can continuously perform segmented detection along the surface of the cable, thereby accurately determining the fault point and improving the efficiency of cable operation and maintenance.

[0038] It should be noted that the rotation of the rotating column 23 will drive the camera 24 to rotate. At this time, the direction of the camera 24 can be changed to monitor the surrounding conditions during the flight. During this process, the camera 24 will not continue to rotate in one direction, but will only rotate back and forth within a circle to avoid driving the filling tube 6 to rotate continuously and causing the detection needle 5 to continue to extend outward.

[0039] Example 2: Please refer to Figure 5-Figure 9 , this embodiment further illustrates the first embodiment. The filling mechanism shown in the figure also includes an output pipe 18 fixedly mounted on the storage box 7. A communicating groove 19 communicating with the output pipe 18 is provided in the first gear 15. The top of the communicating groove 19 is rotatably connected to a rotating ring 20 fixedly connected to the output pipe 18. A plurality of groups of glue outlet pipes 21 communicating with the bottom ends of the communicating grooves 19 are evenly provided in the filling pipe 6. A conveying member 22 for conveying the colloid into the output pipe 18 is provided in the storage box 7. The conveying member 22 includes a conveying pump 37 fixedly mounted in the storage box 7. The input end of the conveying pump 37 is communicated with an input pipe 38 communicating with the storage box 7, and the output end of the conveying pump 37 is communicated with the middle part of the output pipe 18.

[0040] In this embodiment, insulating colloid is stored in the storage box 7. The colloid can be a molten colloid that is pre-cooled and solidified, or a liquid colloid at room temperature. It reacts and solidifies when it encounters air. The colloid in the storage box 7 is transported to the connecting groove 19 through the output pipe 18 by the delivery pump 37. During the rotation of the first gear 15, one end of the output pipe 18 and the rotating ring 20 will not rotate therewith, so as to avoid the output pipe 18 from being entangled. At the same time, the output pipe 18 will rise and fall synchronously with the rise and fall of the first gear 15. The colloid is transported to the glue outlet pipe 21 through the connecting groove 19 and can be discharged into the through hole for filling and solidification. When testing the uncoated cable, there is no need to perform the colloid filling operation. When transporting the molten colloid, the storage box 7 needs to have a heating and melting function. At the same time, the delivery pump 37 needs to reversely draw the colloid in the pipeline into the storage box 7 for storage after the filling is completed to avoid solidification and clogging the pipeline.

[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0042] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-voltage cable operation and maintenance device, characterized in that: include: A fuselage, wherein a plurality of propellers are provided on the fuselage; Also includes: The driving mechanism includes a hook rod fixedly mounted on the bottom of the machine body, and two sets of driving wheels are rotatably connected to the hook rod, which are used to hang the machine body on the cable through the hook rod, and the driving wheels drive the machine body to move along the cable; The operation and maintenance mechanism includes two sets of detection needles installed in the body, which are used to pass through the outer layer of the cable through the detection needles to detect the voltage and current values ​​between the two sets of detection needles; The filling mechanism includes a filling tube fixedly mounted on the outer wall of the detection needle, a storage box for storing filling colloid fixedly connected to the machine body, and is used to inject the filling colloid into the perforated position through the filling tube for protection when the detection needle is pulled out. The operation and maintenance mechanism also includes a current transformer and a voltage transformer fixedly mounted in the machine body, and the terminal blocks of the current transformer and the voltage transformer are respectively located on both sides. The top end of the detection needle is fixedly connected with a conductive wire, and a switching member for switching the connection state between the conductive wire and the terminal blocks of the current transformer and the voltage transformer is provided in the machine body. A driving member is provided in the machine body, and the driving member includes a threaded sleeve fixedly mounted in the machine body, and a threaded groove threadedly connected to the inner wall of the threaded sleeve is provided on the outer wall of the filling tube. The top end of the filling tube is coaxially fixedly connected to a first gear, and a gear column meshing with the first gear is rotatably connected to the machine body, and a rotating shaft is provided in the machine body for synchronously driving the gear columns on both sides to rotate. The cam is fixedly provided with a toothed plate and a toothed plate, and the toothed plate is fixedly provided with a toothed plate, and the toothed plate is fixedly provided with a toothed plate. The toothed plate is fixedly provided with a toothed plate, and the toothed plate is fixedly provided with a toothed plate. The toothed plate is fixedly provided with a toothed plate, and the toothed plate is fixedly provided with a toothed plate.

2. A high-voltage cable operation and maintenance device according to claim 1, characterized in that: The switching component includes a second motor fixedly installed in the machine body, the output end of the second motor is coaxially fixedly connected to a worm, two sets of switching disks are rotatably connected in the machine body, the two sets of switching disks are symmetrically distributed on both sides of the current transformer, a connecting shaft is coaxially fixedly connected between the two sets of switching disks, the outer wall of a set of switching disks close to the second motor is fixedly connected to a worm gear ring engaged with the worm, one end of the conductive wire is fixedly connected to a connecting block coaxially rotatably connected to the switching disk, the side of the switching disk is fixedly connected to a conductive block that can be in contact with the terminal of the current transformer and the voltage transformer, and the conductive block is electrically connected to the connecting block.

3. A high-voltage cable operation and maintenance device according to claim 1, characterized in that: The conveying member comprises a conveying pump fixedly installed in the storage box, the input end of the conveying pump is connected to an input pipe connected to the storage box, and the output end of the conveying pump is connected to the middle of the output pipe.

4. A high-voltage cable operation and maintenance device according to claim 1, characterized in that: The driving mechanism also includes a driving motor fixedly mounted on the hook rod, the output end of the driving motor is coaxially fixedly connected to the driving shaft, and the two sets of driving wheels are coaxially fixedly connected to the outer wall of the driving shaft. The hook rod, driving shaft, filling tube and driving wheel are all made of insulating ceramic material.

5. A high-voltage cable operation and maintenance device according to claim 1, characterized in that: Both sides of the machine body are provided with driving blades that can assist the machine body in turning over.

6. A high-voltage cable operation and maintenance device according to claim 1, characterized in that: The probe needle is made of high-resistance graphite.

Images