CN117250440A - Power grid cable fault detection device - Google Patents
Power grid cable fault detection device Download PDFInfo
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- CN117250440A CN117250440A CN202311522953.XA CN202311522953A CN117250440A CN 117250440 A CN117250440 A CN 117250440A CN 202311522953 A CN202311522953 A CN 202311522953A CN 117250440 A CN117250440 A CN 117250440A
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- 238000001514 detection method Methods 0.000 title claims abstract description 58
- 239000002184 metal Substances 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 19
- 238000013016 damping Methods 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims 2
- 239000000428 dust Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003827 upregulation Effects 0.000 description 1
Classifications
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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
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/14—Braking arrangements; Damping arrangements
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Locating Faults (AREA)
Abstract
The invention discloses a power grid cable fault detection device, which relates to the technical field of cable fault detection and comprises an upper mounting seat, wherein two sides of the bottom of the upper mounting seat are connected with a lower mounting seat through a plurality of fixing bolts, an ultrasonic detector is arranged at the position, close to one end, of the inner side of the upper mounting seat, an infrared temperature detector is arranged at the position, close to the other end, of the inner side of the upper mounting seat, a driving structure is arranged at the position, close to the top, of the inner side of the upper mounting seat and the position, close to the two ends, of the inner side of the lower mounting seat, and through holes for mounting the driving structure are formed through the inner walls of the upper mounting seat and the lower mounting seat. According to the power grid cable fault detection device, the device is placed at one end of the high-altitude cable, the device can start from the starting point of the high-altitude cable, automatically and spirally advance along the cable and detect faults, the whole length of the whole cable is covered, the detection time is shortened, the efficiency is improved, and long-time high-altitude operation of personnel is avoided.
Description
Technical Field
The invention relates to the technical field of cable fault detection, in particular to a power grid cable fault detection device.
Background
High-altitude cables refer to power transmission cables which are overhead-mounted on poles, towers or other overhead structures, and are usually fixed at high positions through brackets or insulators so as to span terrain obstacles such as highways, railways, rivers, oceans and the like, transmit electric energy from power plants or substations to users or other electric facilities at different places, and faults such as short circuits, open circuits, ageing of insulating layers and the like can occur in the long-time use process of the high-altitude cables, so that power transmission interruption, voltage fluctuation, current leakage and power loss are caused;
chinese patent publication No. CN112014682B discloses a cable fault detection device comprising: the two ends of the pipe body are of an opening structure; the air suction assembly is connected with the pipe body; the detection component is connected with one end, far away from the pipe body, of the air suction component and is used for detecting gas components sucked by the air suction component. Although the device can detect the specific fault position of the cable through the matching of the air suction assembly and the detection assembly, for the cable erected at high altitude, operators can hardly detect the cable through the handheld detection device, and because the cable is in fault, discharge phenomena can be generated, surrounding air is ionized or oxidized, so that light and small objects such as dust, particles and the like are attracted, the adsorbed light and small objects can be accumulated around a discharge area to influence the detection effect of the cable detection device, and the problems of low practicability and low functionality exist.
Disclosure of Invention
The invention mainly aims to provide a power grid cable fault detection device which can effectively solve the technical problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a power grid cable fault detection device, includes the mount pad, the bottom both sides of going up the mount pad are connected with down the mount pad through a plurality of fixing bolts, the inboard of going up the mount pad is close to one end position and is installed ultrasonic detector, the inside of going up the mount pad is close to the other end position and is installed infrared temperature detector, the inboard of going up the mount pad is close to top position and the inboard of lower mount pad is close to both ends position and all is provided with driving structure, and runs through the inner wall of going up mount pad and lower mount pad all to offer the through-hole that is used for driving structure installation;
the driving structure comprises a round rod, the round rod is slidably mounted in the through hole, a disc is fixedly mounted at the bottom of the round rod, two vertical plates are symmetrically and fixedly mounted at the bottom of the disc, a pulley is rotatably mounted between the vertical plates, a rubber ring is fixedly mounted outside the pulley, a damping spring is arranged between the disc and the through hole, a limit ring is fixedly mounted outside the round rod near the top position, a blind hole is formed in the center of the top of the round rod, flat grooves are formed in the middle position inside the round rod and near the bottom, four sliding grooves are symmetrically formed in the outer portion of the round rod, and a positioning hole is formed in the top of the round rod near the front position.
As a further scheme of the invention, one end of the damping spring is fixedly arranged at the top of the disc, and an anti-slip strip-shaped groove is formed in the outer surface of the rubber ring.
As a further scheme of the invention, a motor is fixedly arranged at the position, close to the bottom, of the outer part of one of the vertical plates, and an output shaft of the motor penetrates through the vertical plate and is fixedly connected with the pulley.
As a further scheme of the invention, an adjusting structure is arranged in the blind hole, the adjusting structure comprises a vertical rod and connecting discs, the vertical rod is rotatably arranged in the blind hole, three connecting discs are sequentially and fixedly arranged outside the vertical rod, the bottom of the connecting disc positioned at the uppermost part is contacted with the top of a round rod, the other two connecting discs are respectively and adaptively matched with a flat groove, four arc grooves are symmetrically formed in the top of the connecting disc, a top block is slidably arranged in the sliding groove, connecting grooves are formed in the middle position and the position close to the bottom of the inner side of the top block, the connecting grooves are respectively and adaptively matched with the connecting discs, short rods are fixedly arranged at the position close to one end of the top block and the position close to one end of the inner side of the connecting grooves, and the short rods are respectively and adaptively matched with the arc grooves;
the outer wall symmetry of through-hole has seted up a plurality of square grooves, and square groove and kicking block adaptability match, is located the top of connection pad is close to outside position fixed mounting and has the positioning seat, the location chamber has been seted up to the inside of positioning seat, the inside joint in location chamber has the locating bar, the top central point of locating bar puts fixed mounting has the round bar, the outside winding of round bar has positioning spring, the connection pad is run through to the bottom of locating bar, and locating bar and locating hole adaptability match.
As a further scheme of the invention, one end of the positioning spring is fixedly arranged at the top of the positioning rod, and the other end of the positioning spring is fixedly arranged at the top of the positioning cavity.
As a further scheme of the invention, a limiting block is arranged at the position, close to the top, of the outer part of the positioning rod, the limiting block is adaptively matched with the positioning cavity, and the depth of the square groove is larger than the length of a top block entering the inner part of the square groove.
As a further scheme of the invention, two cleaning structures are symmetrically arranged at the rear part of the upper mounting seat, each cleaning structure comprises a mounting block and a connecting rod, the mounting block is fixedly arranged at the front part of the upper mounting seat and is close to one end, two connecting rods are slidably arranged at the inner part of the mounting block and are close to the front part, one ends of the two connecting rods are fixedly connected with a connecting block together, a handle is fixedly arranged at the central position of the front part of the connecting block, the other ends of the two connecting rods are fixedly connected with a pressing plate together, and a plurality of brushes are arranged outside the pressing plate;
the inside of installation piece is close to anterior intermediate position and has seted up the installation cavity, the cavity has been seted up to the anterior central point in installation cavity, the inside joint in installation cavity has the briquetting, the inside joint in cavity has the metal bar, and the one end of metal bar and the rear portion intermediate position fixed connection of briquetting, the outside winding of metal bar has ejection spring, two a plurality of draw-in grooves have all been seted up to the outside of connecting rod, two fixture blocks of inner wall central point symmetry fixed mounting of briquetting, and briquetting and connecting rod, draw-in groove and the equal adaptability matching of fixture block.
As a further scheme of the invention, the outside of the metal rod is provided with a limiting piece, and the limiting piece is adaptively matched with the cavity.
As a further scheme of the invention, one end of the ejection spring is fixedly arranged at the front part of the limiting piece, and the other end of the ejection spring is fixedly arranged on the inner wall of the cavity.
As a further scheme of the invention, the pressing plate is arc-shaped, and one end of the brush, which is close to the pressing plate, is arc-shaped.
The beneficial effects of the invention are as follows:
through setting up the drive structure, can drive three pulleys through the motor and rotate for the device can carry out the spiral along the high altitude cable that needs to detect and advance, and carry out 360 detection to the high altitude cable through the ultrasonic detector and the infrared temperature detector of upper mount pad inboard, in time discover the fault conditions of cable, such as insulation breakdown, local damage etc.;
the damping spring is arranged between the disc and the through hole, so that the pulley can be tightly contacted with the outside of the cable under the action of the elasticity of the damping spring, the pulley with an elastic space can better adapt to the unevenness or bending of the surface of the high-altitude cable and can be kept in closer contact with the high-altitude cable, the pulley can have self-adaptive capacity when being interfered by the outside under the action of the elasticity of the damping spring, the unstable condition of the device in the movement process is prevented, and the accuracy and the stability of detection are improved;
through setting up regulation structure cooperation drive structure for the kicking block can break away from the inside of square groove through clockwise rotation pole setting, and then adjust the angle of pulley, and make the kicking block get into square groove again through anticlockwise rotation pole setting, with the angle of fixed pulley, through increasing the angle between pulley and the cable, make the device advance speed diminish and the number of rotations increase, slight breakdown and local damage that can exist to the overhead cable in normal use carry out meticulous detection, because the speed slows down, can detect the subtle change on cable surface more meticulously, improved cable fault detection's sensitivity and accuracy;
the angle between the pulley and the cable is reduced, so that the advancing speed of the device is increased, the rotation number is reduced, the high-altitude cable with faults is rapidly detected, the fault position is rapidly judged, the cable can be comprehensively and rapidly inspected in a short time, the fault point can be rapidly positioned, the fault inspection efficiency is improved, the device can be used for carrying out fine detection or rapid detection according to specific working conditions, the use flexibility is enhanced, and the device is suitable for actual requirements under different conditions;
through setting up and cleaning structure cooperation drive structure and adjusting structure, can be through the position of adjusting the clamp plate for the outside brush of clamp plate can closely laminate with the cable that needs to detect, in the rotatory in-process of whole device, the dust that attracts gathering of fault location discharge carries out the first step and sweeps, prevents that accumulative dust from influencing ultrasonic detector and infrared temperature detector's detection, and improves accuracy and the reliability of detection;
by removing dust, the influence of the dust on the detection equipment can be eliminated, the equipment can accurately detect discharge signals and temperature changes of fault positions, fault points in the cable can be more effectively found, the fault detection probability is increased, and the detection precision and effect are improved;
through placing the device in the one end of high altitude cable, the device can be from the starting point of high altitude cable, detects along the cable voluntarily, covers the complete length of whole cable, realizes whole fault detection and the diagnosis of whole cable, has shortened detection time by a wide margin, has improved efficiency to use manpower sparingly, and can avoid personnel to operate at the high altitude for a long time, reduce accident risk and personnel's injury's possibility.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a power grid cable fault detection device according to the present invention;
FIG. 2 is a partial cutaway view of a drive structure of a power grid cable fault detection device of the present invention;
FIG. 3 is a schematic view of a broken round rod of a power grid cable fault detection device;
FIG. 4 is a schematic view of a round bar of a power grid cable fault detection device according to the present invention;
FIG. 5 is a partial cutaway view of an adjustment structure of a power grid cable fault detection device of the present invention;
FIG. 6 is an enlarged view of portion A of FIG. 2 of a power grid cable fault detection device according to the present invention;
FIG. 7 is an enlarged view of section B of FIG. 5 of a grid cable fault detection device according to the present invention;
FIG. 8 is a schematic diagram of a shrinkage state of an adjusting structure of a power grid cable fault detection device according to the present invention;
FIG. 9 is an enlarged view of section C of FIG. 8 of a grid cable fault detection device according to the present invention;
FIG. 10 is a partial cutaway view of a cleaning structure of a power grid cable fault detection device of the present invention;
FIG. 11 is an enlarged view of section D of FIG. 10 of a grid cable fault detection device according to the present invention;
FIG. 12 is an exploded view of a briquette and connecting rod of a power grid cable fault detection device of the present invention;
fig. 13 is a front view of a power grid cable fault detection device according to the present invention.
In the figure: 1. an upper mounting seat; 2. a fixing bolt; 3. a lower mounting seat; 4. an ultrasonic detector; 5. an infrared temperature detector; 6. a driving structure; 7. a through hole; 8. a round bar; 9. a disc; 10. a vertical plate; 11. a pulley; 12. a rubber ring; 13. a damping spring; 14. a limit ring; 15. a blind hole; 16. a flat groove; 17. a chute; 18. positioning holes; 19. an adjustment structure; 20. a vertical rod; 21. a connecting disc; 22. an arc-shaped groove; 23. a top block; 24. a connecting groove; 25. a short bar; 26. a square groove; 27. a positioning seat; 28. a positioning rod; 29. a round bar; 30. a positioning spring; 31. a cleaning structure; 32. a mounting block; 33. a connecting rod; 34. a connecting block; 35. a handle; 36. a pressing plate; 37. a brush; 38. a mounting cavity; 39. a cavity; 40. briquetting; 41. a metal rod; 42. an ejector spring; 43. a clamping groove; 44. and (5) clamping blocks.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1-13, the power grid cable fault detection device comprises an upper mounting seat 1, wherein two sides of the bottom of the upper mounting seat 1 are connected with a lower mounting seat 3 through a plurality of fixing bolts 2, an ultrasonic detector 4 is arranged at the position, close to one end, of the inner side of the upper mounting seat 1, an infrared temperature detector 5 is arranged at the position, close to the other end, of the inner side of the upper mounting seat 1, driving structures 6 are arranged at the positions, close to the top, of the inner side of the upper mounting seat 1 and the positions, close to the two ends, of the inner side of the lower mounting seat 3, and through holes 7 for mounting the driving structures 6 are formed in the inner walls penetrating through the upper mounting seat 1 and the lower mounting seat 3;
the driving structure 6 comprises a round rod 8, the round rod 8 is slidably mounted in the through holes 7, the three through holes 7 are in circle center symmetry, a disc 9 is fixedly mounted at the bottom of the round rod 8, two vertical plates 10 are symmetrically and fixedly mounted at the bottom of the disc 9, a pulley 11 is rotatably mounted between the vertical plates 10, a rubber ring 12 is fixedly mounted at the outer part of the pulley 11, a damping spring 13 is arranged between the disc 9 and the through holes 7, a limit ring 14 is fixedly mounted at the outer part of the round rod 8, a blind hole 15 is formed in the central position of the top of the round rod 8, flat grooves 16 are formed in the middle position of the inner part of the round rod 8 and the position close to the bottom, four sliding grooves 17 are symmetrically formed in the outer part of the round rod 8, and a positioning hole 18 is formed in the top of the round rod 8 and close to the front position.
In this embodiment, one end of the damping spring 13 is fixedly mounted on the top of the disc 9, and an anti-slip strip-shaped groove is formed in the outer surface of the rubber ring 12.
Through connecting last mount pad 1 with lower mount pad 3 with fixing bolt 2 outside the cable for the outside rubber circle 12 of pulley 11 contacts with the cable surface, opens the motor and under the drive of motor, makes pulley 11 begin to rotate, and then can drive the device through three oblique pulley 11 and advance along the outside spiral of cable, makes the outside of cable of ultrasonic detector 4 and infrared temperature detector 5 of the inboard installation of last mount pad 1 carry out the omnidirectional detection, thereby discovers the position that the cable breaks down.
In this embodiment, a motor is fixedly installed at a position near the bottom outside one of the vertical plates 10, and an output shaft of the motor penetrates through the vertical plate 10 and is fixedly connected with the pulley 11.
The anti-slip strip-shaped groove is formed in the outer surface of the rubber ring 12, friction between the pulley 11 and the outer portion of the cable can be increased, the device can be conveniently driven to spirally advance along the outer portion of the cable, the pulley 11 can be further attached to the outer portion of the cable under the action of elasticity of the damping spring 13, when a cable bending portion or a protruding position is encountered on the surface of the cable, the round rod 8 can slide in the through hole 7, and the elasticity of the damping spring 13 is utilized to adapt to cables under different conditions.
In this embodiment, an adjusting structure 19 is disposed in the blind hole 15, the adjusting structure 19 includes a vertical rod 20 and a connecting disc 21, the vertical rod 20 is rotatably mounted in the blind hole 15, three connecting discs 21 are sequentially and fixedly mounted outside the vertical rod 20, the bottom of the uppermost connecting disc 21 contacts with the top of the round rod 8, the other two connecting discs 21 are adaptively matched with the flat groove 16, four arc grooves 22 are symmetrically formed in the top of the connecting disc 21, a top block 23 is slidably mounted in the chute 17, a connecting groove 24 is formed in the middle position and the position close to the bottom of the inner side of the top block 23, the connecting groove 24 is adaptively matched with the connecting disc 21, a short rod 25 is fixedly mounted in the position close to one end of the top block 23 and the position close to one end of the connecting groove 24, and the short rod 25 is adaptively matched with the arc grooves 22;
the outer wall symmetry of through-hole 7 has seted up a plurality of square grooves 26, and square groove 26 and kicking block 23 adaptability match, the top that is located the connection pad 21 of top is close to outside position fixed mounting has positioning seat 27, positioning cavity has been seted up to the inside of positioning seat 27, positioning rod 28 has been cup jointed to the inside in positioning cavity, the top central point of positioning rod 28 puts fixed mounting and has round bar 29, the outside winding of round bar 29 has positioning spring 30, the bottom of positioning rod 28 runs through connection pad 21, and positioning rod 28 and locating hole 18 adaptability match.
The round bar 29 is pulled to enable the positioning bar 28 to compress the positioning spring 30 to retract into the positioning cavity, the positioning bar 28 can be separated from the inside of the positioning hole 18, the vertical bar 20 is rotated clockwise, the vertical bar 20 drives the connecting disc 21 to rotate clockwise, the short bar 25 is driven to slide along the arc groove 22 through the arc groove 22 symmetrically formed in the top of the connecting disc 21, the top block 23 can be driven to slide and shrink along the inside of the sliding groove 17, the top block 23 can finally completely enter the inside of the sliding groove 17, and the angle of the pulley 11 can be adjusted through the position of the rotary round bar 8 in the through hole 7, so that the rotating speed and the advancing speed of the device are controlled.
In this embodiment, one end of the positioning spring 30 is fixedly mounted on the top of the positioning rod 28, and the other end of the positioning spring 30 is fixedly mounted on the top of the positioning cavity.
When the pole setting 20 is rotated anticlockwise, the connecting disc 21 is driven to rotate anticlockwise, the short rod 25 can be driven to slide along the arc groove 22, the ejector block 23 is ejected along the chute 17, the ejector block 23 is clamped into the square groove 26, after the short rod 25 moves to the maximum position of the arc groove 22, the positioning rod 28 is ejected under the action of the elastic force of the positioning spring 30, the positioning rod 28 is further inserted into the positioning hole 18, the position of the pole setting 20 is limited, the ejector block 23 is prevented from retracting into the chute 17 in the moving process of the device, and the use of the device is affected.
In this embodiment, a stopper is disposed at a position of the outer portion of the positioning rod 28 near the top, and the stopper is adaptively matched with the positioning cavity, and the depth of the square groove 26 is greater than the length of the top block 23 entering the inner portion of the square groove 26.
The depth of the square groove 26 is larger than the length of the top block 23 entering the inside of the square groove 26, so that the round rod 8 can not be influenced to drive the top block 23 to slide in the inside of the square groove 26.
In the embodiment, two cleaning structures 31 are symmetrically arranged at the rear part of the upper mounting seat 1, each cleaning structure 31 comprises a mounting block 32 and a connecting rod 33, the mounting block 32 is fixedly arranged at the front part of the upper mounting seat 1 and is close to one end, two connecting rods 33 are slidably arranged at the inner part of the mounting block 32 and are close to the front part, one ends of the two connecting rods 33 are fixedly connected with a connecting block 34 together, a handle 35 is fixedly arranged at the front central position of the connecting block 34, the other ends of the two connecting rods 33 are fixedly connected with a pressing plate 36 together, and a plurality of hairbrushes 37 are arranged outside the pressing plate 36;
the installation cavity 38 has been seted up to the inside of installation piece 32 near anterior intermediate position, the cavity 39 has been seted up to the anterior central point of installation cavity 38, the inside joint of installation cavity 38 has briquetting 40, the inside joint of cavity 39 has metal bar 41, and the one end of metal bar 41 and the rear intermediate position fixed connection of briquetting 40, the outside winding of metal bar 41 has ejection spring 42, a plurality of draw-in grooves 43 have all been seted up to the outside of two connecting rods 33, two fixture blocks 44 have been installed to the inner wall central point symmetry of briquetting 40, and briquetting 40 and connecting rod 33, draw-in groove 43 and fixture block 44 all adapt to the matching.
Through pulling metal bar 41, can make the spacing piece extrusion ejection spring 42 of metal bar 41 externally mounted to can drive briquetting 40 and slide in the inside of installation cavity 38, make briquetting 40 and connecting rod 33 break away from the contact, make the fixture block 44 of briquetting 40 inner wall central point symmetry fixed mounting break away from the contact with draw-in groove 43 of seting up on the connecting rod 33, through pulling handle 35, can control the position of clamp plate 36, the outside brush 37 of adjustment clamp plate 36 contacts with the outside of cable, can be in the rotatory in-process of the device, can sweep the dust that discharges the attraction to the trouble.
In this embodiment, the metal bar 41 is provided with a limiting piece on the outside, and the limiting piece is adapted to the cavity 39.
The stopper pieces prevent the metal rod 41 from coming out of the inside of the cavity 39, and the ejector spring 42 can be pressed by the stopper pieces.
In this embodiment, one end of the ejector spring 42 is fixedly mounted at the front part of the limiting plate, and the other end of the ejector spring 42 is fixedly mounted on the inner wall of the cavity 39.
In this embodiment, the pressing plate 36 is arc-shaped, and the brushes 37 are distributed in an arc shape near one end of the pressing plate 36.
After the positions of the pressing plate 36 and the hairbrush 37 are adjusted through the handle 35, the metal rod 41 is loosened, so that the metal rod 41 is reset under the action of the elastic force of the ejection spring 42, the metal rod 41 can drive the pressing block 40 to slide in the installation cavity 38, the pressing block 40 is in contact with and tightly pressed against the connecting rod 33, and the clamping block 44 on the pressing block 40 is clamped with the clamping groove 43 on the connecting rod 33, so that the connecting rod 33 is fixed.
It should be noted that, when the power grid cable fault detection device is used, an operator firstly carries the device to the side of a high-altitude cable needing fault detection, unscrews the fixing bolt 2 to separate the upper mounting seat 1 from the lower mounting seat 3, places the lower mounting seat 3 at the bottom of the cable, and then fixes the upper mounting seat 1 on the lower mounting seat 3 through the fixing bolt 2, and at the moment, under the action of the elasticity of the damping spring 13, the pulley 11 is tightly attached to the outside of the cable through the rubber ring 12;
then, an operator pulls the metal rod 41 to enable a limiting piece arranged outside the metal rod 41 to extrude the ejection spring 42 and drive the pressing block 40 to slide in the installation cavity 38, so that the pressing block 40 is separated from the connecting rod 33, the position of the pressing plate 36 is controlled through the handle 35, after the hairbrush 37 outside the pressing plate 36 is adjusted to be in contact with the outside of the cable, the metal rod 41 is loosened, the metal rod 41 is reset under the elastic force of the ejection spring 42, the pressing block 40 is driven to slide in the installation cavity 38, so that the pressing block 40 is contacted with the connecting rod 33 and is pressed, and a clamping block 44 on the pressing block 40 is clamped with a clamping groove 43 on the connecting rod 33, so that the position of the connecting rod 33 is fixed;
the motor is started to enable the pulley 11 to start rotating, and the device can be driven to spirally advance along the outer portion of the cable through the three inclined pulleys 11, so that the ultrasonic detector 4 and the infrared temperature detector 5 which are arranged on the inner side of the upper mounting seat 1 can detect the outer portion of the cable, the position where the cable breaks down is found, dust attracted by discharge at the fault position is swept through the hairbrush 37 in the spiral advancing process of the device, and the accumulated dust is prevented from affecting the operation of the ultrasonic detector 4 and the infrared temperature detector 5;
an operator can pull the round bar 29 to enable the positioning bar 28 to compress the positioning spring 30 to retract into the positioning cavity, enable the positioning bar 28 to be separated from the positioning hole 18, rotate the upright rod 20 clockwise, enable the upright rod 20 to drive the connecting disc 21 to rotate clockwise, drive the short bar 25 to slide along the arc-shaped groove 22 through the arc-shaped groove 22 symmetrically formed in the top of the connecting disc 21, further drive the top block 23 to slide and shrink along the inside of the sliding groove 17, finally enable the top block 23 to completely enter the inside of the sliding groove 17, and further enable the position of the round bar 8 in the through hole 7 to be changed by rotating the round bar 8, so that the angle of the pulley 11 is adjusted;
when the cable which can still be used normally is subjected to fault detection, the advancing speed of the device is reduced by increasing the angle between the pulley 11 and the cable through adjustment, the number of turns of rotation is increased, and the cable is subjected to finer detection;
when detecting the cable with faults, the angle between the pulley 11 and the cable is reduced by adjusting, so that the advancing speed of the device is increased, the number of turns is reduced, and the cable with faults is rapidly detected;
after the adjustment of the position of the pulley 11 is completed, an operator can rotate the upright rod 20 anticlockwise, drive the connecting disc 21 to rotate anticlockwise, and then drive the short rod 25 to slide along the arc-shaped groove 22, so that the ejector block 23 is ejected out along the chute 17, and then the ejector block 23 is clamped into the square-shaped groove 26, when the short rod 25 moves to the maximum position of the arc-shaped groove 22, the positioning rod 28 is ejected out under the action of the elastic force of the positioning spring 30, and then the positioning rod 28 is inserted into the positioning hole 18, so that the position of the upright rod 20 is limited, the ejector block 23 is prevented from retracting into the chute 17 in the movement process of the device, and the use of the device is affected.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a power grid cable fault detection device, includes mount pad (1), the bottom both sides of going up mount pad (1) are connected with down mount pad (3) through a plurality of fixing bolt (2), the inboard of going up mount pad (1) is close to one end position and installs ultrasonic detector (4), the inside of going up mount pad (1) is close to the other end position and installs infrared temperature detector (5), a serial communication port, the inboard of going up mount pad (1) is close to top position and the inboard of lower mount pad (3) is close to both ends position and all is provided with driving structure (6), and runs through inner wall of going up mount pad (1) and lower mount pad (3) and all offer through-hole (7) that are used for driving structure (6) installation; the driving structure (6) comprises a round rod (8), the round rod (8) is slidably mounted in a through hole (7), a disc (9) is fixedly mounted at the bottom of the round rod (8), two vertical plates (10) are symmetrically and fixedly mounted at the bottom of the disc (9), a pulley (11) is rotatably mounted between the vertical plates (10), a rubber ring (12) is fixedly mounted at the outer part of the pulley (11), a damping spring (13) is arranged between the disc (9) and the through hole (7), a limit ring (14) is fixedly mounted at the outer part of the round rod (8) close to the top, a blind hole (15) is formed in the center of the top of the round rod (8), flat grooves (16) are formed in the middle position and the position close to the bottom of the inside of the round rod (8), four sliding grooves (17) are symmetrically formed in the outer part of the round rod (8), and a positioning hole (18) is formed in the top of the round rod (8) close to the front.
2. A power grid cable fault detection device according to claim 1, wherein: one end of the damping spring (13) is fixedly arranged at the top of the disc (9), and an anti-slip strip-shaped groove is formed in the outer surface of the rubber ring (12).
3. A power grid cable fault detection device according to claim 1, wherein: the motor is fixedly arranged at the position, close to the bottom, of the outside of the vertical plate (10), and an output shaft of the motor penetrates through the vertical plate (10) and is fixedly connected with the pulley (11).
4. A power grid cable fault detection device according to claim 1, wherein: the inside of blind hole (15) is provided with regulation structure (19), regulation structure (19) include pole setting (20) and connection pad (21), pole setting (20) rotate and install in the inside of blind hole (15), connection pad (21) are equipped with three, three connection pad (21) are fixed mounting in proper order in the outside of pole setting (20), and are located the bottom of top connection pad (21) and the top of round bar (8) contact, other two connection pad (21) all with flat groove (16) adaptability match, four arc grooves (22) have been seted up to the top symmetry of connection pad (21), inside slidable mounting of spout (17) has kicking block (23), connecting groove (24) have all been seted up in the intermediate position of kicking block (23) inboard and being close to the bottom position, and connecting groove (24) and connection pad (21) looks adaptation, the top of kicking block (23) and the inside of connecting groove (24) all have fixed mounting stub (25), and stub (25) looks adaptation with arc groove (22);
the outer wall symmetry of through-hole (7) has seted up a plurality of square grooves (26), and square groove (26) and kicking block (23) adaptability match, is located the top connection pad (21) the top is close to outside position fixed mounting and has locating seat (27), the location chamber has been seted up to the inside of locating seat (27), the inside joint in location chamber has locating bar (28), the top central point of locating bar (28) puts fixed mounting and has round bar (29), the outside winding of round bar (29) has positioning spring (30), connection pad (21) are run through to the bottom of locating bar (28), and locating bar (28) and locating hole (18) adaptability match.
5. The power grid cable fault detection device according to claim 4, wherein: one end of the positioning spring (30) is fixedly arranged at the top of the positioning rod (28), and the other end of the positioning spring (30) is fixedly arranged at the top of the positioning cavity.
6. The power grid cable fault detection device according to claim 4, wherein: the outside of locating stick (28) is close to top position and is provided with the stopper, and stopper and location chamber adaptability match, the degree of depth of square groove (26) is greater than the length that gets into inside kicking block (23) of square groove (26).
7. A power grid cable fault detection device according to claim 1, wherein: the cleaning device is characterized in that two cleaning structures (31) are symmetrically arranged at the rear part of the upper mounting seat (1), each cleaning structure (31) comprises a mounting block (32) and a connecting rod (33), each mounting block (32) is fixedly arranged at the front part of the upper mounting seat (1) and close to one end, two connecting rods (33) are slidably arranged at the front part of the inside of each mounting block (32), one ends of the two connecting rods (33) are fixedly connected with a connecting block (34) together, a handle (35) is fixedly arranged at the central position of the front part of each connecting block (34), a pressing plate (36) is fixedly connected with the other ends of the two connecting rods (33) together, and a plurality of brushes (37) are arranged outside the pressing plates (36);
the inside of installation piece (32) is close to anterior intermediate position and has seted up installation cavity (38), cavity (39) have been seted up to the anterior central point of installation cavity (38), the inside joint of installation cavity (38) has briquetting (40), the inside joint of cavity (39) has metal bar (41), and the one end of metal bar (41) and the rear portion intermediate position fixed connection of briquetting (40), the outside winding of metal bar (41) has ejection spring (42), two a plurality of draw-in grooves (43) have all been seted up to the outside of connecting rod (33), two fixture blocks (44) have been installed to the inner wall central point symmetry of briquetting (40), and briquetting (40) and connecting rod (33), draw-in groove (43) and fixture block (44) all adaptability match.
8. The power grid cable fault detection device of claim 7, wherein: and a limiting piece is arranged outside the metal rod (41), and the limiting piece is adaptively matched with the cavity (39).
9. The power grid cable fault detection device of claim 8, wherein: one end of the ejection spring (42) is fixedly arranged at the front part of the limiting piece, and the other end of the ejection spring (42) is fixedly arranged on the inner wall of the cavity (39).
10. The power grid cable fault detection device of claim 7, wherein: the pressing plate (36) is arc-shaped, and one end of the brush (37) close to the pressing plate (36) is arc-shaped.
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| CN202311522953.XA CN117250440B (en) | 2023-11-16 | 2023-11-16 | Power grid cable fault detection device |
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| CN202311522953.XA CN117250440B (en) | 2023-11-16 | 2023-11-16 | Power grid cable fault detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117805455A (en) * | 2024-03-01 | 2024-04-02 | 国网山东省电力公司巨野县供电公司 | Comprehensive tester for operation detection of transformer substation |
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