A detection device and method for detecting the charged state of a high-voltage shielded cable

Abstract

The invention discloses a device and method for detecting the live state of a high-voltage shielded cable, and relates to the technical field of cable detection. The device and method comprise a detection body, wherein a center block is fixedly connected to the top of the detection body, a measuring belt and a transmission component are connected to the center block, the measuring belt is rotatably wrapped around the cable through the transmission component, an elastic rope is connected to the measuring belt, and telescopic components are connected to both sides of the center block, and the telescopic components are telescopic to perform multi-range detection on the cable. The device and method for detecting the live state of a high-voltage shielded cable, by connecting the measuring belt and the telescopic component to the detection body, can wrap around the outer wall of the cable, detect and mark the specific location where the cable is damaged, and at the same time, the telescopic component drives a second detector to extend, and further detects the periphery of the cable, thereby improving the work efficiency of the staff, reducing the potential safety hazards of the cable, avoiding the need for the staff to move slowly for detection, and greatly increasing the practicality of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of cable detection, and in particular to a device and method for detecting the charged state of a high-voltage shielded cable. Background Art

[0002] There are six main causes of cable failure: insulation aging and deterioration, cable overheating, machine damage, sheath corrosion, breakdown caused by overvoltage, and problems with the design and manufacturing process of intermediate joints and terminal heads. The high-voltage shielded cable live state detection device is unable to detect cable damage, and defects such as sand holes and cracks left during lead sheathing cannot be prevented and judged. The cable cannot be inspected and maintained in a timely manner, which reduces the life of the cable and accelerates damage, leading to leakage and safety hazards in the cable. Summary of the invention

[0003] The purpose of the present invention is to provide a high-voltage shielded cable live state detection device and detection method to solve the six main causes of cable failure, namely insulation aging and deterioration, cable overheating, machine damage, sheath corrosion, breakdown caused by overvoltage, and design and manufacturing process problems of intermediate joints and terminal heads. The high-voltage shielded cable live state detection device cannot detect the damage to the cable, and defects such as sand holes and cracks left during lead sheathing cannot be prevented and judged, and the cable cannot be detected and maintained in time, which reduces the life of the cable, accelerates damage, and leads to leakage and safety hazards in the cable.

[0004] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a device for detecting the live state of a high-voltage shielded cable, comprising a detection body, a center block is fixedly connected to the top of the detection body, a measuring belt and a transmission assembly are connected to the center block, the measuring belt is rotatably wrapped around the cable through the transmission assembly, an elastic rope is connected to the measuring belt, and telescopic assemblies are connected to both sides of the center block, and the telescopic assemblies are telescopic for multi-range detection of the cable;

[0005] The telescopic assembly includes a first extension block, a second extension block, a third extension block and a fourth extension block, which are mutually sleeved and slide to extend and shorten.

[0006] Furthermore, conical teeth are provided on the top of the measuring belt, the elastic rope passes through the conical teeth on the measuring belt and is fixed at both ends of the measuring belt, and tooth grooves are provided on the opposite sides of the measuring belt, wherein the tooth grooves are provided on the measuring belt at the lower part of the conical teeth, one end of the measuring belt is fixedly connected to a first detector, an alarm is fixedly connected to the outer side of the first detector, and there are two measuring belts, which are relatively connected to the center block.

[0007] Furthermore, a hydraulic rod is fixedly connected to the top of the first detector, a long slot is provided on the first detector on one side of the hydraulic rod, a marking pen is abutted against the output shaft of the hydraulic rod, a telescopic card block is sleeved on the outer wall of the marking pen, and the telescopic card block is connected to the long slot provided in the first detector and moves in the long slot.

[0008] Furthermore, the transmission assembly is connected to the middle of the central block, and the central blocks on both sides of the transmission assembly are connected with measuring belts, and the measuring belts rotate in the central block.

[0009] Furthermore, the transmission assembly includes a motor, a transmission gear and a bevel gear. The motor is fixed on the center block. The bottom of the motor is fixedly connected to the transmission gear. The bottom of the transmission gear is fixedly connected to the bevel gear.

[0010] Furthermore, the outer wall of the transmission gear is meshed with the tooth groove opened on the measuring belt, and the bottom of the bevel gear is meshed and connected with a connecting rod, a bevel gear is fixed to one end of the connecting rod close to the transmission gear, and a threaded column is fixed to one end of the connecting rod away from the bevel gear, and the threaded column passes through the center block and is connected to the telescopic assembly.

[0011] Furthermore, the first extension block is fixed on the central block, the second extension block is sleeved in the first extension block, the third extension block is sleeved in the second extension block, the fourth extension block is sleeved in the third extension block, the threaded column on the connecting rod passes through the second extension block and is connected to the fourth extension block, and the threaded column is threadedly connected to the second extension block.

[0012] Furthermore, the inner walls of the first extension block and the second extension block are connected with racks, the racks are fixed on both sides of the first extension block and the second extension block, and the fourth extension block and both sides of the outer wall of the fourth extension block are fixedly connected with racks.

[0013] Furthermore, both sides of the second extension block and the third extension block are provided with sliding grooves, the middle part of the sliding groove is rotatably connected with a fixed gear, the fixed gear on the third extension block is meshed with the racks on the second extension block and the fourth extension block, the fixed gear on the second extension block is meshed with the racks on the first extension block and the third extension block, and the end of the fourth extension block away from the center block is fixedly connected with the second detector.

[0014] A method for detecting the charged state of a high-voltage shielded cable comprises the following steps:

[0015] S1. Move the detection body close to the cable so that the second detector on the central block and the telescopic assembly abuts against the cable and the measuring tape is wrapped around the cable. At this time, the second detector can perform local detection on the cable;

[0016] S2, start the transmission assembly, the transmission assembly drives the measuring belt and the connecting rod to rotate at the same time, at this time, the measuring belt drives the first detector to move in an arc according to the outer wall of the cable, and the elastic rope is stretched and retracted through the outer wall diameter of the cable wrapped by the measuring belt, and the outer wall damage of the cable is fully detected, and the alarm and marker on the first detector warn and mark the detected damaged points;

[0017] S3, the bevel gear drives the second extension block to move through the connecting rod, the second extension block drives the first extension block and the third extension block to move through the fixed gear, the fixed gear on the third extension block drives the second extension block and the fourth extension block to move and retract to one side, and the fourth extension block extends the second detector to a far distance to increase the detection distance of the cable.

[0018] Compared with the prior art, the device and method for detecting the charged state of a high-voltage shielded cable provided by the present invention have the following beneficial effects:

[0019] The high-voltage shielded cable live state detection device and detection method, by connecting a measuring belt and a telescopic component to a detection body, can wrap around the outer wall of the cable to detect and mark the specific location where the cable is damaged. At the same time, the telescopic component drives the second detector to extend to further detect the periphery of the cable, thereby improving the work efficiency of the staff, reducing the safety hazards of the cable, avoiding the need for the staff to move slowly for detection, and greatly increasing the practicality of the device.

[0020] The elastic rope connected to the measuring belt can exert a pulling force on the measuring belt. When the measuring belt changes its moving arc according to the diameter of the cable, the pulling force of the elastic rope can make the measuring belt close to the cable, greatly increasing the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle;

[0023] Figure 2 It is a schematic diagram of the overall structure of the present invention from a second viewing angle;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the central block of the present invention;

[0025] Figure 4 It is a schematic diagram of the disassembly of the marking pen and the first detector of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the transmission assembly of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the connecting rod of the present invention;

[0028] Figure 7 This is a schematic diagram of the exploded structure of the telescopic assembly of the present invention from a first perspective;

[0029] Figure 8 It is a schematic diagram of the exploded structure of the telescopic assembly of the present invention from a second perspective.

[0030] Description of reference numerals:

[0031] 1. Detection body; 2. Center block; 3. Measuring belt; 4. Elastic rope; 5. First detector; 6. Alarm; 7. Second detector; 8. Telescopic assembly; 801. First extension block; 802. Second extension block; 803. Third extension block; 804. Fourth extension block; 805. Slide; 806. Rack; 807. Fixed gear; 9. Transmission assembly; 901. Motor; 902. Transmission gear; 903. Bevel gear; 10. Connecting rod; 11. Hydraulic rod; 12. Marker pen; 13. Telescopic block. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] See also Figure 1-8 A device for detecting the live state of a high-voltage shielded cable comprises a detection body 1, a center block 2 is fixedly connected to the top of the detection body 1, a measuring belt 3 and a transmission component 9 are connected to the center block 2, the measuring belt 3 is rotatably wrapped around the cable through the transmission component 9, an elastic rope 4 is connected to the measuring belt 3, and telescopic components 8 are connected to both sides of the center block 2, and the telescopic components 8 are telescopic for multi-range detection of the cable;

[0034] The telescopic assembly 8 includes a first extension block 801, a second extension block 802, a third extension block 803 and a fourth extension block 804, which are mutually socketed and slide with each other to extend and shorten.

[0035] See also Figure 3 , 4The top of the measuring belt 3 is provided with conical teeth, the elastic rope 4 passes through the conical teeth on the measuring belt 3 and is fixed at the two ends of the measuring belt 3. The opposite sides of the measuring belt 3 are provided with tooth grooves, wherein the tooth grooves are provided on the measuring belt 3 at the lower part of the conical teeth. One end of the measuring belt 3 is fixedly connected with a first detector 5, and the outer side of the first detector 5 is fixedly connected with an alarm 6. There are two measuring belts 3, which are relatively connected to the center block 2. By providing the conical teeth on the upper part of the measuring belt 3, the measuring belt 3 can be folded into different arcs, and the angle can be adjusted according to the diameter of the cable, so that the device is more flexible when used.

[0036] A hydraulic rod 11 is fixedly connected to the top of the first detector 5, and a long groove is opened on the first detector 5 on one side of the hydraulic rod 11. The output shaft of the hydraulic rod 11 is abutted with a marker pen 12, and the outer wall of the marker pen 12 is sleeved with a telescopic card block 13. The telescopic card block 13 is connected to the long groove opened in the first detector 5 and moves in the long groove. The first detector 5, the alarm 6 and the hydraulic rod 11 are all electrically connected. When the first detector 5 detects that the cable is damaged, the alarm 6 lights up and the hydraulic rod 11 is started at the same time. The output shaft of the hydraulic rod 11 pushes the marker pen 12 to move to abut against the cable to mark the damaged part of the cable. At the same time, the telescopic card block 13 slides in the long groove opened in the first detector 5 according to the movement of the marker pen 12.

[0037] See also Figure 5 The transmission component 9 is connected to the middle of the center block 2. The center blocks 2 on both sides of the transmission component 9 are connected with measuring belts 3. The measuring belts 3 rotate in the center block 2. By connecting the measuring belts 3 to the center block 2, the measuring belts 3 can be limited. The transmission component 9 connected between the measuring belts 3 can transmit the measuring belts 3 on both sides.

[0038] The transmission assembly 9 includes a motor 901, a transmission gear 902 and a bevel gear 903. The motor 901 is fixed on the center block 2. The bottom of the motor 901 is fixedly connected to the transmission gear 902. The bottom of the transmission gear 902 is fixedly connected to the bevel gear 903. The model of the motor 901 is a common model on the market and will not be described in detail here. When the motor 901 is started, the motor 901 drives the transmission gear 902 and the bevel gear 903 to rotate.

[0039] The outer wall of the transmission gear 902 is meshed with the tooth groove provided on the measuring tape 3, and the bottom of the bevel gear 903 is meshed and connected with a connecting rod 10. A bevel gear is fixed to the end of the connecting rod 10 close to the transmission gear 902, and a threaded column is fixed to the end of the connecting rod 10 away from the bevel gear 903, and the threaded column passes through the center block 2 and is connected to the telescopic assembly 8. The connecting rod 10 is inserted into the center block 2 to support the connecting rod 10. When the bevel gear 903 rotates, it can drive the bevel gear on the connecting rod 10 to rotate, and drive the threaded column at the other end to rotate through the connecting rod 10.

[0040] See also Figure 6-8 The first extension block 801 is fixed on the central block 2, the second extension block 802 is sleeved in the first extension block 801, the third extension block 803 is sleeved in the second extension block 802, the fourth extension block 804 is sleeved in the third extension block 803, the threaded column on the connecting rod 10 passes through the second extension block 802 and is connected to the fourth extension block 804, and the threaded column is threadedly connected to the second extension block 802. When the threaded column at one end of the connecting rod 10 rotates, it can drive the second extension block 802 to rotate and move to one side.

[0041] The inner walls of the first extension block 801 and the second extension block 802 are connected with racks 806, which are fixed on both sides of the first extension block 801 and the second extension block 802. The fourth extension block 804 and the outer walls of the fourth extension block 804 are fixedly connected with racks 806 on both sides. The racks 806 are respectively connected to different positions of the first extension block 801, the second extension block 802, the third extension block 803 and the fourth extension block 804, and the inner walls of the first extension block 801, the second extension block 802 and the third extension block 803 are extended with long strips for limiting the internal structure, and the outer walls of the second extension block 802, the third extension block 803 and the fourth extension block 804 are fixed with clamping blocks for connecting with the long strips, which can prevent the first extension block 801, the second extension block 802, the third extension block 803 and the fourth extension block 804 from slipping off each other, making the device more stable when in use.

[0042] Slide grooves 805 are provided on both sides of the second extension block 802 and the third extension block 803, and a fixed gear 807 is rotatably connected in the middle of the slide groove 805. The fixed gear 807 on the third extension block 803 is meshed with the racks 806 on the second extension block 802 and the fourth extension block 804. The fixed gear 807 on the second extension block 802 is meshed with the racks 806 on the first extension block 801 and the third extension block 803. The fourth extension block 804 is fixedly connected to the second detector 7 at one end away from the center block 2. A long rod is clamped in the middle of the fixed gear 807, and both ends of the long rod are fixedly connected to the second extension block 802 and the third extension block 804 with the slide groove 805. The extension block 803 is used to limit the fixed gear 807. The fixed gear 807 connected to the second extension block 802 and the third extension block 803 can drive the first extension block 801 and the fourth extension block 804 to move, so that the telescopic assembly 8 can perform synchronous telescoping of multiple extension blocks. When the fourth extension block 804 drives the second detector 7 to extend to both sides, the cable is inspected at the same time, and the inspection data is displayed on the inspection body 1. When the cable is damaged, the staff can move the measuring belt 3 to the damaged part, perform circumferential inspection, and further mark the damaged part, avoiding the trouble of the staff to search and the situation where the damaged part is forgotten.

[0043] A method for detecting the charged state of a high-voltage shielded cable comprises the following steps:

[0044] S1. Move the detection body 1 close to the cable, so that the center block 2 and the second detector 7 on the telescopic assembly 8 are in contact with the cable, and the measuring tape 3 is wrapped around the cable. At this time, the second detector 7 can perform local detection on the cable;

[0045] S2, start the transmission assembly 9, which drives the measuring belt 3 and the connecting rod 10 to rotate at the same time. At this time, the measuring belt 3 drives the first detector 5 to move in an arc according to the outer wall of the cable, and the elastic rope 4 expands and contracts through the outer wall diameter of the cable wrapped by the measuring belt 3, so as to comprehensively detect the damage of the outer wall of the cable. The alarm 6 and the marking pen 12 on the first detector 5 warn and mark the detected damaged points;

[0046] S3, the bevel gear 903 drives the second extension block 802 to move through the connecting rod 10, the second extension block 802 drives the first extension block 801 and the third extension block 803 to move through the fixed gear 807, the fixed gear 807 on the third extension block 803 drives the second extension block 802 and the fourth extension block 804 to move and retract to one side, and the fourth extension block 804 extends the second detector 7 to a distant place to increase the detection distance of the cable.

[0047] Working principle: When in use, the staff moves the detection body 1 to the detection location, so that the center block 2 and the second detector 7 on the telescopic component 8 abut against the cable, and the measuring belt 3 abuts against the cable, and the motor 901 is started. The motor 901 drives the transmission gear 902 and the bevel gear 903 to rotate, and the transmission gear 902 drives the measuring belts 3 on both sides to make circular motions relative to each other to wrap the cable. The elastic rope 4 stretches the measuring belt 3 according to the diameter of the cable. At the same time, the first detector 5 on the measuring belt 3 detects the cable, and the damaged part is marked by the alarm 6 and the marker 12. At the same time, the bevel gear 903 drives the second extension block 802 to rotate through the connecting rod 10 and move to one side. The second extension block 802 drives the first extension block 801, the third extension block 803 and the fourth extension block 804 to move and extend to the original position through the fixed gear 807, and the fourth extension block 804 drives the second detector 7 to detect the cable.

[0048] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for detecting the charged state of a high-voltage shielded cable, comprising a detection body (1), characterized in that: The top of the detection body (1) is fixedly connected to a central block (2), the central block (2) is connected to a measuring belt (3) and a transmission assembly (9), the measuring belt (3) is rotatably wrapped around the cable through the transmission assembly (9), the measuring belt (3) is connected to an elastic rope (4), and both sides of the central block (2) are connected to telescopic assemblies (8), the telescopic assemblies (8) are telescopic to perform multi-range detection on the cable; The telescopic assembly (8) comprises a first extension block (801), a second extension block (802), a third extension block (803) and a fourth extension block (804); the first extension block (801), the second extension block (802), the third extension block (803) and the fourth extension block (804) are sleeved with each other, and the first extension block (801), the second extension block (802), the third extension block (803) and the fourth extension block (804) slide with each other to extend and shorten; The measuring belt (3) is provided with conical teeth at the top, the elastic rope (4) passes through the conical teeth on the measuring belt (3) and is fixed to the two ends of the measuring belt (3), and the measuring belt (3) is provided with tooth grooves on the opposite sides, wherein the tooth grooves are provided on the measuring belt (3) below the conical teeth, one end of the measuring belt (3) is fixedly connected to a first detector (5), and the outer side of the first detector (5) is fixedly connected to an alarm (6), and the measuring belt (3) has two pieces, which are connected to the central block (2) in a relative manner; A hydraulic rod (11) is fixedly connected to the top of the first detector (5); a long slot is provided on the first detector (5) on one side of the hydraulic rod (11); a marking pen (12) is abutted against the output shaft of the hydraulic rod (11); a telescopic card block (13) is sleeved on the outer wall of the marking pen (12); the telescopic card block (13) is connected to the long slot provided in the first detector (5) and moves in the long slot; The transmission assembly (9) is connected to the middle of the central block (2); the central blocks (2) on both sides of the transmission assembly (9) are connected to measuring belts (3); and the measuring belts (3) rotate in the central block (2); The transmission assembly (9) comprises a motor (901), a transmission gear (902) and a bevel gear (903); the motor (901) is fixed on the central block (2); the bottom of the motor (901) is fixedly connected to the transmission gear (902); and the bottom of the transmission gear (902) is fixedly connected to the bevel gear (903); The outer wall of the transmission gear (902) meshes with a tooth groove provided on the measuring belt (3); the bottom of the bevel gear (903) is meshedly connected with a connecting rod (10); a bevel gear is fixed to one end of the connecting rod (10) close to the transmission gear (902); a threaded column is fixed to one end of the connecting rod (10) away from the bevel gear (903); and the threaded column passes through the central block (2) and is connected to the telescopic assembly (8).

2. A high-voltage shielded cable live state detection device according to claim 1, characterized in that: The first extension block (801) is fixed on the central block (2); the second extension block (802) is sleeved in the first extension block (801); the third extension block (803) is sleeved in the second extension block (802); the fourth extension block (804) is sleeved in the third extension block (803); the threaded column on the connecting rod (10) passes through the second extension block (802) and is connected to the fourth extension block (804), and the threaded column is threadedly connected to the second extension block (802).

3. A high-voltage shielded cable live state detection device according to claim 2, characterized in that: The inner walls of the first extension block (801) and the second extension block (802) are both connected with racks (806), and the racks (806) are fixed on both sides of the first extension block (801) and the second extension block (802), and the fourth extension block (804) and the outer walls of the fourth extension block (804) are fixedly connected with racks (806) on both sides.

4. A device for detecting the charged state of a high-voltage shielded cable according to claim 3, characterized in that: Both sides of the second extension block (802) and the third extension block (803) are provided with a slide groove (805); the middle part of the slide groove (805) is rotatably connected to a fixed gear (807); the fixed gear (807) on the third extension block (803) is meshed with the racks (806) on the second extension block (802) and the fourth extension block (804); the fixed gear (807) on the second extension block (802) is meshed with the racks (806) on the first extension block (801) and the third extension block (803); and the end of the fourth extension block (804) away from the central block (2) is fixedly connected to a second detector (7).

5. A method for detecting the charged state of a high-voltage shielded cable, using the device for detecting the charged state of a high-voltage shielded cable according to claim 4, characterized in that: The following steps are involved: S1. Bring the detection body (1) close to the cable so that the center block (2) and the second detector (7) on the telescopic assembly (8) are in contact with the cable and the measuring tape (3) is wrapped around the cable. At this time, the second detector (7) can perform local detection on the cable; S2, starting the transmission assembly (9), the transmission assembly (9) drives the measuring belt (3) and the connecting rod (10) to rotate at the same time, at this time, the measuring belt (3) drives the first detector (5) to move in an arc according to the outer wall of the cable, and the elastic rope (4) is extended and retracted through the outer wall diameter of the cable wrapped by the measuring belt (3), so as to perform a comprehensive detection of the damage of the outer wall of the cable, and the alarm (6) and the marking pen (12) on the first detector (5) warn and mark the detected damaged point; S3, the bevel gear (903) drives the second extension block (802) to move via the connecting rod (10), the second extension block (802) drives the first extension block (801) and the third extension block (803) to move via the fixed gear (807), the fixed gear (807) on the third extension block (803) drives the second extension block (802) and the fourth extension block (804) to move and retract to one side, and the fourth extension block (804) extends the second detector (7) to a far distance to increase the detection distance of the cable.

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