CN114019304A - Cable terminal defect detection device based on electric field and magnetic field change - Google Patents
Cable terminal defect detection device based on electric field and magnetic field change Download PDFInfo
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- CN114019304A CN114019304A CN202111284322.XA CN202111284322A CN114019304A CN 114019304 A CN114019304 A CN 114019304A CN 202111284322 A CN202111284322 A CN 202111284322A CN 114019304 A CN114019304 A CN 114019304A
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- 125000003003 spiro group Chemical group 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
Abstract
The invention relates to the technical field of power supply, in particular to a cable terminal defect detection device based on electric field and magnetic field changes, which comprises a climbing module, a rotating module, a moving module and a driving module, wherein the climbing module comprises a connecting frame detachably sleeved on a cable and climbing wheels rotatably arranged on the connecting frame, the rotating module comprises an annular frame connected on the connecting frame and detachably sleeved on the cable and a rotating platform arranged on the annular frame and making circumferential motion along the annular frame, and the moving module comprises an installation frame assembled on the rotating platform and making linear motion along a radial extension line of the cable and a detector connected on the installation frame. The problem of need artifical climbing cable termination shaft tower among the prior art to carry out cable termination and detect, waste time and energy and have the risk of electrocuteeing and eminence fall is solved.
Description
Technical Field
The invention relates to the technical field of power supply, in particular to a cable terminal defect detection device based on changes of an electric field and a magnetic field.
Background
With the rapid development of society, the demand of people on electric power is also increasing, and the requirement on the reliability of power supply is higher and higher. In order to ensure the normal operation of the power equipment, the power equipment or the line needs to be electrified or power failure detection so as to timely discover and eliminate the defects or hidden dangers of the equipment or the line and avoid the power failure caused by equipment failure and influence on the normal power consumption requirement of the society. Compared with power failure detection, live detection can be performed under the condition that equipment or lines are not powered off, so that the power failure to the outside is reduced, and the expectation of the society on the power demand is met.
Current detection mode needs artifical climbing cable termination shaft tower to detect, wastes time and energy and has the risk of electrocuteeing and eminence fall, and current detecting instrument can't carry out the technical problem of all-round 360 detection to the cable simultaneously. We propose a cable termination defect detection device based on changes in electric and magnetic fields.
Disclosure of Invention
In order to solve the technical problems that a detection method in the prior art is time-consuming and labor-consuming, has electric shock and high falling risks, and cannot carry out detection in all directions, the invention provides a cable terminal defect detection device based on changes of an electric field and a magnetic field, and the technical problems are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention provides a cable terminal defect detection device based on electric field and magnetic field changes, which is characterized by comprising the following components: the climbing module comprises a connecting frame detachably sleeved on the cable and climbing wheels which are rotatably arranged on the connecting frame and are attached to the outer wall of the cable; the rotating module comprises an annular frame which is connected to the connecting frame and detachably sleeved on the cable, and a rotating platform which is configured on the annular frame and moves circumferentially along the annular frame; the mobile module comprises a mounting frame which is assembled on the rotating platform and does linear motion along a radial extension line of the cable and a detector which is connected to the mounting frame; the driving module comprises a climbing driving assembly arranged on the climbing module and used for driving the climbing wheel to rotate, a circumferential driving assembly arranged on the rotating module and used for driving the rotating platform to do circumferential motion, and a linear driving assembly arranged on the moving module and used for driving the mounting frame to do linear motion.
Furthermore, the connecting frame is surrounded by four right-angle base blocks which are bent once, each right-angle base block is connected with one climbing wheel, and two ends of a climbing wheel shaft of each climbing wheel are rotatably arranged on two right-angle edges of each right-angle base block.
Further, wherein two of them of joint frame are provided with coupling assembling to the edge, coupling assembling includes: the connecting sleeve is fixed at the end part of one right-angle side of the right-angle base block; the fixing sleeve is fixed at the end part of one right-angle side of the adjacent right-angle base block and is opposite to the connecting sleeve; the connecting rod, the connecting rod configuration is in the adapter sleeve with between the fixed cover, the first end of connecting rod is rotationally spacing in the adapter sleeve, the second end spiro union of connecting rod in fixed cover.
Further, a convex ring used for axial limiting is arranged at the first end of the connecting rod, and correspondingly, a groove used for axial limiting is arranged at the matching position of the convex ring in the connecting sleeve.
Further, two other opposite sides of the connecting frame are provided with adjusting components, and the adjusting components comprise: the fixed block is fixed at the end part of one right-angle side of the right-angle base block; the thread block is fixed at the end part of one right-angle side of the adjacent right-angle base block and is opposite to the fixed block; the adjusting rod is arranged between the fixed block and the threaded block, the first end of the adjusting rod is rotatably limited in the fixed block, and the second end of the adjusting rod is in threaded connection with the threaded block; the pressure spring is sleeved on the adjusting rod and is limited between the fixed block and the thread block.
Further, the climbing driving assembly comprises a first motor arranged on the right-angle base block, a first gear is arranged on a driving shaft of the first motor, and the first gear drives the climbing wheel to rotate through climbing wheel teeth arranged at the end part of the climbing wheel shaft.
Furthermore, a circumferential sliding groove is formed in the annular frame, and a circumferential sliding block matched in the circumferential sliding groove is arranged on the end face, facing the circumferential sliding groove, of one end of the rotating platform.
Further, the circumferential driving assembly comprises a second motor arranged on the rotating platform, and a second gear is arranged on a driving shaft of the second motor and is matched with a toothed ring formed on the outer circumferential wall of the annular frame to drive the rotating platform to move.
Further, the mounting frame is assembled on the rotating platform through a linear sliding pair, and a linear sliding groove of the linear sliding pair extends along the radial direction of the cable.
Further, the linear driving assembly comprises a third motor arranged on the mounting frame, a third gear is arranged on a driving shaft of the third motor, and the third gear and a rack arranged on the rotating platform are matched to drive the mounting frame to do linear motion.
Furthermore, the power supply module comprises a power supply device arranged on the connecting frame and an induction power taking ring connected to the bottom of the connecting frame and sleeved on the cable, and the induction power taking ring is electrically connected with the power supply device.
The device further comprises a position detection module and a data recording module, wherein the position detection module is used for detecting the spatial position of the detector at each detection point, and the data recording module is used for recording and storing the spatial position data of the detector at each detection point and the electric field and magnetic field intensity values corresponding to the spatial position data of each detection point.
Based on the technical scheme, the invention can realize the following technical effects:
according to the cable terminal defect detection device based on the electric field and magnetic field changes, the connecting frame of the climbing module is sleeved on the periphery of the cable at the lower part of the cable terminal, when the connecting frame is connected, the climbing wheel on the connecting frame is attached to the outer wall of the cable, and the climbing wheel rotates to drive the whole device to move up and down on the cable so that the detector can measure the electric field strength and the magnetic field strength at different heights; the rotating platform of the rotating module can do circumferential motion around the cable, so that the detector can obtain the electric field intensity and the magnetic field strength value on the circumferential motion track; the mounting bracket of the mobile module can be linearly moved on the rotating platform, the track of the linear movement is on the radial extension line of the cable, namely, the distance between the mounting bracket and the cable is changed, meanwhile, the detector can obtain the electric field and the magnetic field strength value of a circular ring plane on the periphery of a vertical cable at the same height by matching with the rotating module, and the electric field strength and the magnetic field strength value in the peripheral three-dimensional space range of the cable can be measured by matching with the climbing module, so that the technical problems that the detection method in the prior art is time-consuming and labor-consuming, has electric shock and high falling risk, and cannot carry out all-around detection are solved. In practical application, the device can measure for many times at different time intervals, and can find and eliminate defects in advance by comparing the change of data, thereby avoiding cable line faults and ensuring the technical effect of line safety.
Drawings
FIG. 1 is a schematic view of the overall structure of the electric field and magnetic field variation-based cable termination defect detection apparatus of the present invention;
FIG. 2 is a schematic view of a climbing module of the present invention;
fig. 3 is a partially enlarged view of a portion a in fig. 2;
FIG. 4 is a schematic view of a right angle base block of the present invention;
FIG. 5 is a top view of the rotating module of the present invention;
FIG. 6 is a bottom view of the rotating module of the present invention;
FIG. 7 is a schematic view of a mobile module of the present invention;
figure 8 is a schematic diagram of a power supply ring of the present invention.
Wherein: 1-climbing module, 11-connecting frame, 12-climbing wheel, 121-climbing wheel shaft, 122-climbing wheel teeth, 13-right-angle base block, 131-first motor, 132-first gear, 14-connecting assembly, 141-connecting sleeve, 142-fixing sleeve, 143-connecting rod, 1431-convex ring, 15-adjusting assembly, 151-fixing block, 152-threaded block, 153-adjusting rod and 154-pressure spring; 2-rotating module, 21-annular frame, 211-circumferential sliding groove, 212-arc half body, 2121-connecting lug, 213-hinge rod, 214-toothed ring, 22-rotating platform, 221-second motor, 222-second gear, 23-balancing weight and 24-connecting ring; 3-moving module, 31-mounting rack, 311-third motor, 312-third gear, 32-detector, 33-linear sliding pair, 331-linear sliding chute, 34-rack and 35-stop block; 4-induction power-taking ring, 41-half iron core and 42-copper wire.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
As shown in fig. 1 to 8, the cable termination defect detecting apparatus based on electric field and magnetic field variation of the present application includes a climbing module 1, a rotating module 2, a moving module 3 and a driving module, wherein the climbing module 1 includes a connection frame 11 detachably sleeved on a cable and a climbing wheel 12 rotatably disposed on the connection frame 11, a contact portion between the climbing wheel 12 and an outer wall of the cable is preferably made of rubber material, the rotating module 2 includes an annular frame 21 connected to the connection frame 11 and detachably sleeved on the cable and a rotating platform 22 disposed on the annular frame 21 and circumferentially moving along the annular frame 21, the moving module 3 includes a mounting frame 31 assembled on the rotating platform 22 and linearly moving along a radial extension line of the cable and a detector 32 connected to the mounting frame 31, and the driving module includes a climbing driving component disposed on the climbing module 1 and used for driving the climbing wheel 12 to rotate, A circumferential driving component arranged on the rotating module 2 and used for driving the rotating platform 22 to do circumferential motion, and a linear driving component arranged on the moving module 3 and used for driving the mounting frame 31 to do linear motion.
According to the cable terminal defect detection device based on the electric field and magnetic field changes, the connecting frame 11 of the climbing module 1 is sleeved on the periphery of a cable at the lower part of the cable terminal, when the connecting frame 11 is connected, the climbing wheels 12 on the connecting frame 11 are attached to the outer wall of the cable, and the climbing wheels 12 rotate to drive the whole device to move up and down on the cable so that the detector 32 can measure electric field and magnetic field strength values at different heights; the rotating platform 22 of the rotating module 2 can move circumferentially around the cable, so that the detector 32 can obtain the electric field and magnetic field strength values on the circumferential movement track; the mounting bracket 31 of the mobile module 3 can do linear motion on the rotating platform 22, and the track of the linear motion is on the radial extension line of the cable, that is to say, the distance between the mounting bracket 31 and the cable is changed, and meanwhile, the detector 32 can obtain the electric field and the magnetic field strength value of a circular ring plane at the periphery of the vertical cable at the same height by matching with the rotating module 2, and then the electric field and the magnetic field strength value in the peripheral three-dimensional space range of the cable can be measured by matching with the climbing module 1, so that the technical problems that the detection method in the prior art is time-consuming and labor-consuming, has electric shock and high falling risks, and cannot carry out all-around detection are solved. In practical application, the device can measure for many times at different time intervals, and can find and eliminate defects in advance by comparing the change of data, thereby avoiding cable line faults and ensuring the technical effect of line safety.
In the climbing module 1 of the present application, the connecting frame 11 is surrounded by four right-angle base blocks 13 which are bent once, each right-angle base block 13 is connected with one climbing wheel 12, and both ends of the climbing wheel shaft 121 of each climbing wheel 12 are rotatably disposed on two right-angle edges of each right-angle base block 13. Specifically, a mounting groove is formed in the right-angle base block 13, a first motor 131 of the climbing driving assembly is disposed in the mounting groove, the first motor 131 is preferably a servo motor, a first gear 132 is fixedly connected to a driving shaft of the first motor 131, meanwhile, climbing gear teeth 122 are fixedly connected to an end portion of the climbing wheel shaft 121, and the climbing gear teeth 122 are meshed with the first gear 132.
In the climbing module 1 of the present application, the connecting assemblies 14 are disposed on two opposite sides of the connecting frame 11, for example, the upper and lower opposite sides of the connecting frame 11 in fig. 1-2, the connecting assembly 14 includes a connecting sleeve 141, a fixing sleeve 142 and a connecting rod 143, the connecting sleeve 141 is fixed on the end of one right-angle side of the right-angle base block 13, the fixing sleeve 142 is fixed on the end of one right-angle side of the adjacent right-angle base block 13, and the position of the fixing sleeve 141 is opposite to that of the connecting sleeve 141, the connecting rod 143 is disposed between the connecting sleeve 141 and the fixing sleeve 142, the first end of the connecting rod 143 is rotatably limited in the connecting sleeve 141, and the second end of the connecting rod 143 is screwed to the fixing sleeve 142. Specifically, a through hole is formed in the connecting sleeve 141, the first end of the connecting rod 143 is rotatably disposed in the through hole, and meanwhile, a protruding ring 1431 for axial limiting is disposed on the first end of the connecting rod 143, correspondingly, one section of the through hole is expanded outward to form a groove for axial limiting, and the protruding ring 1431 is fitted in the groove to form axial limiting for the first end of the connecting rod 143.
In the climbing module 1 of the present application, the adjusting assemblies 15 are disposed on the other two opposite sides of the connecting frame 11, for example, the left and right opposite sides of the connecting frame 11 in fig. 1-2, each adjusting assembly 15 includes a fixing block 151, a thread block 152, an adjusting rod 153 and a pressure spring 154, the fixing block 151 is fixed at the end of one right-angle side of the right-angle base block 13, the thread block 152 is fixed at the end of one right-angle side of the adjacent right-angle base block 13, and the position of the thread block is opposite to that of the fixing block 151, the adjusting rod 153 is disposed between the fixing block 151 and the thread block 152, the first end of the adjusting rod 153 is rotatably limited in the fixing block 151, the second end of the adjusting rod 153 is screwed to the thread block 152, the pressure spring 154 is sleeved on the adjusting rod 153, and the pressure spring 154 is limited between the fixing block 151 and the thread block 152. Specifically, the first end of the adjusting rod 153 is engaged with the fixed block 151 in a manner that the first end of the connecting rod 143 is engaged with the connecting sleeve 141, and the adjustment is facilitated by the compression spring 154 disposed between the fixed block 151 and the screw block 152.
When establishing the cable with the module 1 cover that climbs of this embodiment, rotate earlier two upper and lower opposite side's of connecting frame 11 connecting rod 143, make the second end of connecting rod 143 deviate from in the fixed cover 142, make connecting frame 11 divide into two frameworks about, then amalgamate the framework from the cable side once more, hold the fixed cover 142 of twist with the second of connecting rod 143, adjust the elasticity simultaneously, make the climbing wheel 12 hug closely on the outer wall of cable, then adjust pole 153 through adjusting part 15 and further adjust the elasticity between climbing wheel 12 and the cable. Then the first gear 132 of the first motor 131 is controlled to rotate, the first gear 132 rotates to drive the climbing wheel teeth 122 to rotate, the climbing wheel teeth 122 rotates to drive the climbing wheel shaft 121 to rotate, the climbing wheel shaft 121 rotates to drive the climbing wheel 12 to rotate, thereby controlling the connection frame 11 to ascend and descend on the cable so that the detector 32 can measure the electric field and magnetic field strength values at different heights. It should be noted that the friction force between the climbing wheel 12 and the cable needs to be greater than the gravity of the cable terminal defect detecting device based on the electric field and the magnetic field change so as to ensure that the cable terminal defect detecting device based on the electric field and the magnetic field change can stay at any height of the cable during climbing, and meanwhile, in order to realize climbing, the force exerted on the climbing wheel 12 by the first motor 131 of the climbing driving assembly needs to be greater than the friction force between the climbing wheel 12 and the cable.
In the rotating module 2 of the present application, the ring frame 21 is formed by detachably connecting a left arc half body 212 and a right arc half body 212, the two arc half bodies 212 are connected by connecting lugs 2121 provided at both ends of the arc half bodies 212, as shown in fig. 6 to 7, a single arc half body 212 is connected to the connecting frame 11 by two hinge rods 213, and the two hinge rods 213 are respectively hinged to two corresponding right-angle base blocks 13 connected together by the adjusting assembly 15. Further, a circumferential sliding groove 211 is formed in the top end face of the annular frame 21, a circumferential sliding block is slidably fitted in the circumferential sliding groove 211, the circumferential sliding block is fixedly connected to the rotating platform 22 of the rotating module 2, a second motor 221 of the circumferential driving assembly is fixedly connected to the rotating platform 22, the second motor 221 is preferably a servo motor, a second gear 222 is fixedly connected to a driving shaft of the second motor 221, and the second gear 222 is engaged with a toothed ring 214 formed on the outer circumferential wall of the annular frame 21.
In the rotation module 2 of this application, in order to guarantee the balance of annular frame 21, still be provided with balancing weight 23 in annular frame 21's circumference spout 211, balancing weight 23 passes through go-between 24 and rotation platform 22 fixed connection, balancing weight 23 and rotation platform 22 distribute in the position of two remote notional points apart of the ring that circumference spout 211 constitutes simultaneously, correspondingly, go-between 24 clearance fit is in the spout, optionally for half circular arc or full circular arc.
In this embodiment, the rotating module 2 needs to be installed to the cable together with the climbing module 1, after the connection frame 11 is connected, the two arc-shaped half bodies 212 of the annular frame 21 are spliced on the periphery of the cable through the connecting lug 2121, and then the second gear 222 on the second motor 221 is controlled to rotate the rotating platform 22 along the circumferential sliding groove 211 on the annular frame 21, so that the detector 32 can obtain the electric field and the magnetic field strength values on the circumferential movement track.
In the moving module 3 of the present application, the mounting frame 31 is mounted on the rotating platform 22 by a linear sliding pair 33, the linear sliding pair 33 includes a linear sliding chute 331 and a linear sliding block, and the linear sliding chute 331 extends along the radial direction of the cable. Specifically, a linear slide groove 331 is formed in the rotary platform 22, a rack 34 parallel to the linear slide groove 331 is disposed, a linear slider engaged with the linear slide groove 331 is disposed on the mounting frame 31, a third motor 311 is disposed on the mounting frame 31, the third motor 311 is preferably a servo motor, a third gear 312 is disposed on a drive shaft of the third motor 311, and the third gear 312 is engaged with the rack 34. In order to prevent the mounting frame 31 from sliding down from the rotary platform 22, stoppers 35 for stopping the mounting frame 31 are disposed at both ends of the linear slide groove 331.
The moving module 3 of this implementation is the cooperation and rotates module 2, through the distance of adjustment mounting bracket 31 and cable to make the diameter of the circumferential motion of detector 32 lengthen or shorten, thereby can survey electric field and magnetic field intensity value on the different distances apart from the axle center of cable on the coplanar.
The cable terminal defect detection device based on the electric field and magnetic field changes further comprises a power supply module, wherein the power supply module comprises a power supply device arranged on the connecting frame 11 and an induction power taking ring 4 connected to the bottom of the connecting frame 11, and the induction power taking ring 4 is sleeved on a cable and is electrically connected with the power supply device. The induction power-taking ring 4 comprises two annular half iron cores 41, copper wires 42 are wound on the half iron cores 41, the copper wires 42 convey generated induction current to a power supply device, and the power supply device converts the induction current into required rated current and supplies the rated current to each electric device on the detection device. Specifically, half iron core 41 is connected in the connecting frame 11 bottom in order to avoid two half iron cores 41 to receive the interference of connecting frame 11 when the butt joint through the connecting piece of semirigidity, and the tip of the butt joint department of two half iron cores 41 disposes the concave-convex structure of convenient butt joint, and simultaneously, arranges the recess on half iron core 41's the outer lane terminal surface, and the recess fit in has annular staple bolt, and the staff tightens two half iron cores through annular staple bolt.
The cable termination defect detecting apparatus based on the electric field and magnetic field variation of the present invention further includes a position detecting module including a plurality of position sensors for feeding back the spatial position of the detector 32, and a data recording module, specifically, a height sensor provided on the rotating platform 22, the device comprises a radial displacement sensor and an angle sensor which are arranged on the detector 32, wherein the height sensor is used for detecting the ground clearance of the detector 32, the radial displacement sensor is used for detecting the radial distance between the detector 32 and the cable, the angle sensor is used for detecting the circumferential angle of the detector 32 relative to the cable, and the data recording module is used for recording and storing the spatial position data of the detector 32 at each detection point and the electric field and magnetic field strength values corresponding to the spatial position data of each detection point. That is to say, the detector 32, the position detection module and the data recording module cooperate to make the electric field and the magnetic field strength value of the detection point at a specific spatial position around the cable correspond to the spatial position of the detection point and record corresponding data, and cooperate with external software to generate a three-dimensional display image in which the electric field and the magnetic field strength value of the cable terminal are matched with the spatial position in the subsequent data processing.
In order to facilitate the null adjustment of the angle sensor, a compass for facilitating positioning is provided on the detector 32. Note: to facilitate recording of the angle value traversed by the detector 32 relative to the cable, the zero-bit line of the angle sensor is a true south reference line in this embodiment. Of course, the true south reference line is only one preferred embodiment of the present application, and may be true north, true east, or any other reference line, as long as the reference line can be made to coincide with the zero line of the angle sensor.
The cable termination defect detecting device based on the electric field and the magnetic field changes in the embodiment is used as follows:
1. assembling before detection, namely assembling a cable terminal defect detection device based on electric field and magnetic field changes on a cable to be detected, and in the assembling process, paying attention to place a detector 32 in the south-pointing direction so that a zero-bit line of an angle sensor is superposed with a south-pointing reference line to facilitate recording of angle data;
2. detecting and recording single detection point data, wherein a position detection module detects a ground clearance height value Z of a detector 32, a radial distance value L of the detector 32 from a cable and a rotation angle value omega of the detector 32 relative to the south direction of the cable, the position is a detection point, the spatial position of the detection point is recorded as (Z, L, omega), meanwhile, the detector 32 detects an electric field strength value A and a magnetic field strength value B of the position and records as (A, B), and then a data recording module corresponds the electric field strength value and the magnetic field strength value of the detection point to the spatial position of the detection point and records as [ (A, B) and (Z, L, omega) ];
3. the process of collecting big data collects the data of detection points at different positions (height, radial distance and angle) on the periphery of the cable to be detected, the process can adopt a mode of automatically collecting data or manually collecting data, and the spatial position of the initial detection point of the automatically collected data is (Z)0，L0，ω0) Wherein the height value Z from the ground0Taking the minimum value ZminI.e. the lowest position in which the detector 32 can be mounted, the radial distance value L0Minimum value LminI.e. the extreme position of the detector 32 closest to the cable on the linear slideway 331, the rotation angle value omega0Take the minimum value omegaminI.e. the south direction of the cable, and then can be subdivided into three periods, namely a large period, a medium period and a small period according to the motion trail of the detector 32, wherein the complete automatic data acquisition process is a large period, one large period comprises a plurality of medium periods, one medium period comprises a plurality of small periods, the small period is limited by one rotation of the detector 32, if the detector 32 is set to take one value every 45 degrees, the value is represented as that the height value Z and the radial distance value L from the ground are unchanged, the rotation angle value omega is changed from 0 to 360 times, and 8 values are taken, i.e. 8 [ (A, B) and (Z, L, omega) are acquired in one small period]Data, the middle period is limited by the detector 32 moving from one extreme position to another extreme position on the linear chute 331, if the detector 32 is set to move 5 small pauses 6 times to complete the total length of the linear chute 331, then it shows that the height value Z from the ground is unchanged, L changes 6 times, the rotation angle value omega cycles 6 times from 0 to 360, and 48 values are taken, i.e. 48 [ (A, B) and (Z, L, omega) are collected in the middle period]Data, week of the yearIf the detector 32 is set to move 9 small segments and stop 10 times to complete the total height of the cable to be tested, the height value Z from the ground changes 10 times, L circulates 10 times, the rotation angle value omega circulates 60 times, 2880 values are taken, that is, 2880 [ (A, B) and (Z, L, omega) are collected in a large period]The data is a complete automatic data acquisition process, and the manual data acquisition process is flexible, so that the detection point position of the detector 32 can be adjusted at will, and the [ (A, B) and (Z, L, omega) of the detection point is recorded]The data is mainly used for supplementing after automatically acquiring the data;
4. and (3) data arrangement, namely inputting the obtained [ (A, B) and (Z, L, omega) ] data into software of a third party, and marking a plurality of [ (A, B) and (Z, L, omega) ] data on the software of the third party in space to form a corresponding three-dimensional display image.
The cable termination defect detection device based on the electric field and the magnetic field changes is suitable for periodic detection of the cable. For example, when a target line is just put into operation, the cable terminal is detected for the first time and corresponding data are recorded, after the target cable runs for a period of time, the corresponding data are detected for the second time and recorded, then periodic detection is carried out, and whether the cable has defects or not is judged by comparing the change conditions of an electric field and a magnetic field in the detected data, so that the defects are eliminated in advance, the fault of the cable line is avoided, and the safe operation of the line is guaranteed.
It should be understood that the above-described specific embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Obvious variations or modifications which are within the spirit of the invention are possible within the scope of the invention.
Claims (12)
1. A cable termination defect detection device based on electric field and magnetic field changes, characterized by comprising:
the climbing module (1) comprises a connecting frame (11) detachably sleeved on the cable and a climbing wheel (12) which is rotatably arranged on the connecting frame (11) and is attached to the outer wall of the cable;
the rotating module (2) comprises an annular frame (21) which is connected to the connecting frame (11) and detachably sleeved on the cable, and a rotating platform (22) which is configured on the annular frame (21) and moves circumferentially along the annular frame (21);
a movement module (3), said movement module (3) comprising a mounting frame (31) mounted on said rotary platform (22) and moving linearly along a radial extension of the cable and a detector (32) connected to said mounting frame (31);
the driving module comprises a climbing driving assembly arranged on the climbing module (1) and used for driving the climbing wheel (12) to rotate, a circumferential driving assembly arranged on the rotating module (2) and used for driving the rotating platform (22) to do circumferential motion, and a linear driving assembly arranged on the moving module (3) and used for driving the mounting frame (31) to do linear motion.
2. The electric field and magnetic field change-based cable termination defect detection device according to claim 1, wherein the connection frame (11) is surrounded by four right-angle base blocks (13) which are bent once, each right-angle base block (13) is connected with one of the climbing wheels (12), and both ends of a climbing wheel shaft (121) of each climbing wheel (12) are rotatably arranged on two right-angle edges of each right-angle base block (13).
3. The electric field and magnetic field variation-based cable termination defect detecting device according to claim 2, wherein two opposite sides of the connecting frame (11) are provided with connecting components (14), and the connecting components (14) comprise:
the connecting sleeve (141), the said connecting sleeve (141) is fixed on the end of a right angle side of the said right angle base block (13);
the fixing sleeve (142), the said fixing sleeve (142) is fixed on the end of a right-angle side of the said adjacent said right-angle base block (13), and the position is opposite to said adapter sleeve (141);
the connecting rod (143), the connecting rod (143) configuration is in the adapter sleeve (141) with between fixed cover (142), the first end of connecting rod (143) is spacing in rotationally in adapter sleeve (141), the second end spiro union of connecting rod (143) in fixed cover (142).
4. The electric field and magnetic field variation based cable termination defect detection device as claimed in claim 3, wherein a protruding ring (1431) for axial position limitation is provided on the first end of the connection rod (143), and correspondingly, a groove for axial position limitation is provided at the matching position of the protruding ring (1431) in the connection sleeve (141).
5. The electric field and magnetic field variation-based cable termination defect detecting device according to claim 3, wherein adjusting assemblies (15) are disposed on two other opposite sides of the connecting frame (11), and the adjusting assemblies (15) comprise:
the fixing block (151), the said fixing block (151) is fixed on the end of a right angle side of the said right angle base block (13);
the thread block (152) is fixed at the end of one right-angle side of the adjacent right-angle base block (13), and the position of the thread block (152) is opposite to that of the fixing block (151);
the adjusting rod (153) is arranged between the fixed block (151) and the thread block (152), a first end of the adjusting rod (153) is rotatably limited in the fixed block (151), and a second end of the adjusting rod (153) is in threaded connection with the thread block (152);
the pressure spring (154) is sleeved on the adjusting rod (153), and meanwhile, the pressure spring (154) is limited between the fixed block (151) and the thread block (152).
6. The electric field and magnetic field variation-based cable termination defect detection apparatus according to claim 2, wherein the climbing driving assembly comprises a first motor (131) arranged on the right-angle base block (13), a first gear (132) is arranged on a driving shaft of the first motor (131), and the first gear (132) drives the climbing wheel (12) to rotate through climbing wheel teeth (122) arranged at the end of the climbing wheel shaft (121).
7. The electric field and magnetic field change-based cable termination defect detection device according to claim 1, wherein a circumferential sliding groove (211) is formed in the annular frame (21), and a circumferential sliding block which is matched in the circumferential sliding groove (211) is arranged on one end face, facing the circumferential sliding groove (211), of the rotating platform (22).
8. The electric and magnetic field variation-based cable termination defect detection apparatus according to claim 7, wherein the circumferential driving assembly comprises a second motor (221) disposed on the rotary platform (22), a second gear (222) is disposed on a driving shaft of the second motor (221), and the second gear (222) is matched with a toothed ring (214) formed on an outer circumferential wall of the annular frame (21) to drive the rotary platform (22) to move.
9. The electric and magnetic field variation-based cable termination defect detection apparatus according to claim 1, wherein the mounting frame (31) is mounted on the rotating platform (22) through a linear sliding pair (33), and a linear sliding groove (331) of the linear sliding pair (33) extends along a radial direction of the cable.
10. The electric field and magnetic field variation-based cable termination defect detection apparatus according to claim 9, wherein the linear driving assembly comprises a third motor (311) disposed on the mounting frame (31), a third gear (312) is disposed on a driving shaft of the third motor (311), and the third gear (312) cooperates with a rack (34) disposed on the rotating platform (22) to drive the mounting frame (31) to move linearly.
11. The electric field and magnetic field change-based cable termination defect detection device according to claim 1, further comprising a power supply module, wherein the power supply module comprises a power supply device configured on the connection frame (11) and an induction power taking ring (4) connected to the bottom of the connection frame (11) and sleeved on the cable, and the induction power taking ring (4) is electrically connected with the power supply device.
12. The electric field and magnetic field variation-based cable termination defect detecting apparatus according to claim 1, further comprising a position detecting module for detecting a spatial position of the detector (32) at each detecting point, and a data recording module for recording and storing spatial position data of the detector (32) at each detecting point, and electric field and magnetic field intensity values corresponding to the spatial position data of each detecting point.
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