CN118275839B - Ring main unit partial discharge detection device - Google Patents
Ring main unit partial discharge detection device Download PDFInfo
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- CN118275839B CN118275839B CN202410713306.5A CN202410713306A CN118275839B CN 118275839 B CN118275839 B CN 118275839B CN 202410713306 A CN202410713306 A CN 202410713306A CN 118275839 B CN118275839 B CN 118275839B
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- 238000001514 detection method Methods 0.000 title claims abstract description 119
- 239000000523 sample Substances 0.000 claims abstract description 36
- 244000309464 bull Species 0.000 claims description 8
- 210000000078 claw Anatomy 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 206010063659 Aversion Diseases 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001052 transient effect 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
- G01R31/12—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
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- 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
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- 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
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to the field of partial discharge detection, in particular to a ring main unit partial discharge detection device, which comprises a detection probe and an extension unit; the detection probe is arranged on the extension unit; the extension unit can push the detection probe between the adjacent ring main units and comprises a fixed assembly and a movable assembly; the fixed component comprises a rectangular pipe, through holes are symmetrically formed in two sides of one end of the rectangular pipe, a driving structure is arranged in the through holes, and the driving structure controls the movement of the movable component; detection probe shifts in the looped netowrk cabinet group for the maintainer carries out partial discharge detection operation in the position of keeping away from the looped netowrk cabinet, improves the security, also can have higher flexibility through comparatively narrow space simultaneously, and this looped netowrk cabinet partial discharge detection device is when not using moreover, and accessible motor control rectangular bar removes to reset, removes to in the rectangular tube, conveniently accomodates this looped netowrk cabinet partial discharge detection device.
Description
Technical Field
The invention relates to the field of partial discharge detection, in particular to a ring main unit partial discharge detection device.
Background
Ring main unit partial discharge detection is an important link for ensuring safe operation of a power system. Partial discharge refers to a localized discharge phenomenon occurring in an insulating medium of an electrical apparatus, which, if not found and handled in time, may lead to damage to the apparatus and even to safety accidents;
at present, four detection methods of Ultra High Frequency (UHF), transient ground voltage (TEV), ultrasonic wave (ULT) and current pulse method are mainly adopted for partial discharge detection, so that the method has higher sensitivity and accuracy and has been widely used;
The looped netowrk cabinet sets up in the specific electric power room, neatly put, when the maintainer carries out partial discharge and detects, personal safety that needs to consider can make the safety preparation in advance, looped netowrk cabinet partial discharge's influence can not neglect, partial discharge can constitute the potential safety hazard to electrical equipment and personnel around, when carrying out partial discharge to the looped netowrk cabinet of electric power room, because operating space is limited, the maintainer is difficult to extend, the peripheral looped netowrk cabinet can be touched to the health, to a plurality of looped netowrk cabinets as shown in fig. 1 and fig. 2 lay the condition, the maintainer needs to shift looped netowrk cabinet group depths, the side can realize accurate detection, but this condition exists great potential safety hazard to the maintainer.
Therefore, a ring main unit partial discharge detection device is provided for the problems.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a ring main unit partial discharge detection device, which comprises a detection probe and an extension unit; the detection probe is arranged on the extension unit; the extension unit can push the detection probe between the adjacent ring main units and comprises a fixed assembly and a movable assembly;
The fixed component comprises a rectangular pipe, through holes are symmetrically formed in two sides of one end of the rectangular pipe, a driving structure is arranged in the through holes, and the driving structure controls the movement of the movable component; the driving structure comprises a gear, the gear is rotationally connected in the through hole, a rack is meshed with the inner side of the gear, and the rack is arranged on the movable assembly;
The movable assembly comprises a rectangular rod which is connected in the rectangular pipe in a sliding mode, racks are fixedly connected to two sides of the rectangular rod, and a detection probe is fixedly connected to the upper surface of one end of the rectangular rod.
Preferably, the rectangular pipe is symmetrically provided with erection components, the erection components can erect the extension unit on the ground, the erection components are arranged at positions close to one end of the rectangular pipe, the erection components comprise rotating rods, one ends of the rotating rods are rotationally connected to the rectangular pipe, and the other ends of the rotating rods are rotationally connected with wheel bodies;
A limiting block is arranged at one end of the rotating rod; the rectangular pipe rotates tie point one side with the bull stick and is equipped with the gag lever post, and the stopper can support at the gag lever post, and the bull stick is the obtuse angle setting with the rectangular pipe.
Preferably, limit grooves in a strip shape are formed in two side walls in the rectangular tube, and the limit grooves are formed along the length direction of the rectangular tube; concave parts are symmetrically formed in two sides of the other end of the rectangular rod, and a stabilizing assembly is arranged in each concave part;
The stabilizing assembly comprises a connecting plate which is arranged up and down, one end of the connecting plate is connected in the concave part, the other end of the connecting plate is rotationally connected with a roller body, and the roller body can roll along the limit groove.
Preferably, the first groove is arranged on the lower surface of the rectangular rod and is arranged at a position close to one end of the rectangular rod;
A supporting rod is arranged in the first groove, one end of the supporting rod is rotatably connected to the first groove through a torsion spring, the position close to one end of the rectangular rod is rotatably arranged, a rotating groove is formed in one half of the other end of the supporting rod, and a bayonet is formed in the other half of the other end of the supporting rod; the rotating groove is rotationally connected with a wheel;
A second groove is formed in one side of the first groove, the second groove is arranged in the rectangular rod, one side of the second groove is communicated with one end of the first groove, a communication position point is opposite to a bayonet on the support rod, and the other end of the second groove extends horizontally to the other end of the rectangular rod and vertically penetrates through the lower surface of the rectangular rod;
A release rod is arranged in the second groove and used for controlling the rotation of the support rod, the release rod is arranged along the second groove, one end of the release rod extends to the communication position of the first groove and the second groove and is embedded in the bayonet, and the other end of the release rod vertically extends to the lower surface of the rectangular rod;
the back surface of one end of the release rod is connected to the inner side wall of the second groove through a spring;
the inner bottom surface of the rectangular tube is provided with a groove, the groove is arranged at a position close to one end of the rectangular tube, a shifting block is arranged in the groove, and the shifting block is rotationally connected in the groove through a torsion spring.
Preferably, the other end of the rectangular rod is also provided with an auxiliary assembly, the auxiliary assembly is used for extending the rectangular rod, the auxiliary assembly comprises an extending rod, racks are arranged on two side walls of the extending rod, an inserting rod is arranged at one end of the extending rod, and the inserting rod can be inserted into an inserting hole formed in the other end of the rectangular rod.
Preferably, a relief groove is formed between the concave part and the jack, and the relief groove is communicated with the concave part and is communicated with the through part; a rotating shaft is fixedly connected to one end of the connecting plate, the rotating shaft is rotatably connected to the inner top surface and the inner bottom surface of the concave part, and a locking block is arranged in the middle of the rotating shaft;
the inserted link is provided with a notch, the inserted link is inserted into the jack, the notch is opposite to the abdication groove, and the locking block is rotationally embedded in the notch.
Preferably, the both sides of rectangular pipe are seted up the spout, and the spout is seted up along rectangular pipe length direction, and the spout runs through to the other end of rectangular pipe, and the spout sliding connection has the pole of holding, holds the tip outside of pole and is equipped with the handle.
Preferably, the magnetic blocks for adsorbing the wheel bodies are symmetrically arranged on the side walls of the two sides of the rectangular pipe, the rotating rod rotates to be in a state of overlapping with the rectangular pipe, and the magnetic blocks can adsorb and fix the wheel bodies.
Preferably, a claw is arranged in each concave part, and the claws can clamp the roller body.
Preferably, the upper surface of the rectangular pipe is provided with a handle.
The invention has the advantages that:
1. Detection probe shifts in the looped netowrk cabinet group for the maintainer carries out partial discharge detection operation in the position of keeping away from the looped netowrk cabinet, improves the security, also can have higher flexibility through comparatively narrow space simultaneously, and this looped netowrk cabinet partial discharge detection device is when not using moreover, and accessible motor control rectangular bar removes to reset, removes to in the rectangular tube, conveniently accomodates this looped netowrk cabinet partial discharge detection device.
2. Through the erection component, the ring main unit partial discharge detection device can be erected on the ground, so that the ring main unit partial discharge detection device is convenient to shift; the bull stick extends directional ground, and under the cooperation of gag lever post and stopper, the bull stick is the obtuse angle setting with the rectangular pipe, promotes or pulls the rectangular pipe this moment, alright realize this looped netowrk cabinet partial discharge detection device's aversion, the nimble position that controls this looped netowrk cabinet partial discharge detection device improves detection efficiency.
Drawings
FIG. 1 is a perspective view of a partial discharge detection device for a ring main unit in the present invention;
FIG. 2 is a top view of a partial discharge detection device for a ring main unit according to the present invention;
FIG. 3 is a perspective view of a ring main unit partial discharge detection device according to the present invention;
FIG. 4 is a side view of a ring main unit partial discharge detection device according to the present invention;
FIG. 5 is a front view of a ring main unit partial discharge detection device according to the present invention;
FIG. 6 is a perspective view of a rectangular tube according to the present invention;
FIG. 7 is a perspective view of a rectangular bar of the present invention;
FIG. 8 is a cross-sectional view of a rectangular tube in accordance with the present invention;
FIG. 9 is a perspective view of the rectangular bar and extension bar of the present invention;
FIG. 10 is a front view of the rectangular bar and extension bar of the present invention in combination;
FIG. 11 is a view showing an unused state of the support bar according to the present invention;
FIG. 12 is a view showing the use of the support bar according to the present invention;
FIG. 13 is a schematic view of the rectangular bar and the extension bar of the present invention without being engaged;
fig. 14 is a schematic view of the rectangular bar and the extension bar of the present invention.
In the figure: 1. a detection probe; 2. a rectangular tube; 3. a through hole; 4. a gear; 5. a rack; 6. a rectangular bar; 7. a rotating rod; 8. a wheel body; 9. a limiting block; 10. a limit rod; 11. a limit groove; 12. a concave portion; 13. a splice plate; 14. a first groove; 15. a support rod; 16. a bayonet; 17. a wheel; 18. a second groove; 19. a release lever; 20. a spring; 21. a groove; 22. a shifting block; 23. an extension rod; 24. a rod; 25. a jack; 26. a relief groove; 27. a rotating shaft; 28. a locking piece; 29. a notch; 30. a chute; 31. a holding rod; 32. a handle; 33. a magnetic block; 34. a claw; 35. a handle; 36. a roller body.
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.
Referring to fig. 1 to 8, a ring main unit partial discharge detection device comprises a detection probe 1 and an extension unit; the detection probe 1 is arranged on an extension unit; the extension unit can push the detection probe 1 between adjacent ring main units and comprises a fixed assembly and a movable assembly;
The fixed component comprises a rectangular pipe 2, through holes 3 are symmetrically formed in two sides of one end of the rectangular pipe 2, a driving structure is arranged at the position of each through hole 3, and the driving structure controls the movement of the movable component; the driving structure comprises a gear 4, the gear 4 is rotatably connected in the through hole 3, a rack 5 is meshed with the inner side of the gear 4, and the rack 5 is arranged on the movable assembly;
The movable assembly comprises a rectangular rod 6 which is connected in the rectangular pipe 2 in a sliding manner, racks 5 are fixedly connected to two sides of the rectangular rod 6, and a detection probe 1 is fixedly connected to the upper surface of one end of the rectangular rod 6;
According to the ring main unit partial discharge detection device, the detection probe 1 can be extended to the deep part of the ring main unit group, and personnel are not required to be shifted to a potential electric shock dangerous area; during specific operation, an operator places the extension unit on one side outside the ring main unit group, at the moment, the driving structure is operated, the driving structure further comprises a motor for driving the gear 4 to rotate, the motor drives the gear 4 to rub the rack 5, the rack 5 drives the rectangular rod 6 to slowly extend out of the rectangular tube 2, and the detection probe 1 at one end position of the rectangular rod 6 is pushed into the ring main unit group, in order to facilitate the operator to clearly see the displacement position of the detection probe 1, a camera can be arranged on an end shell of the detection probe 1, the camera transmits pictures to the detection controller in a wireless or wired manner, and the position of the detection probe 1 can be clearly seen through a display screen on the detection controller, so that partial discharge detection can be performed more accurately; the detection probe 1 shifts in the looped netowrk cabinet group for the maintainer carries out partial discharge detection operation in the position of keeping away from the looped netowrk cabinet, improves the security, also can have higher flexibility through comparatively narrow space simultaneously, and this looped netowrk cabinet partial discharge detection device is when not using moreover, and accessible motor control rectangular rod 6 removes to reset, removes to in the rectangular tube 2, conveniently accomodates this looped netowrk cabinet partial discharge detection device.
Referring to fig. 1-8, the rectangular tube 2 is symmetrically provided with erection components, the erection components can erect the extension unit on the ground, the erection components are arranged at a position close to one end of the rectangular tube 2, the erection components comprise a rotating rod 7, one end of the rotating rod 7 is rotationally connected with the rectangular tube 2, and the other end of the rotating rod 7 is rotationally connected with a wheel body 8;
A limiting block 9 is arranged at one end of the rotating rod 7; a limiting rod 10 is arranged at one side of a rotating connection point of the rectangular tube 2 and the rotating rod 7, a limiting block 9 can be abutted against the limiting rod 10, and the rotating rod 7 and the rectangular tube 2 are arranged at an obtuse angle; through the erection component, the ring main unit partial discharge detection device can be erected on the ground, so that the ring main unit partial discharge detection device is convenient to shift; the bull stick 7 extends directional ground, and under the cooperation of gag lever post 10 and stopper 9, bull stick 7 is the obtuse angle setting with rectangular pipe 2, promotes or pulls rectangular pipe 2 this moment, alright realize this looped netowrk cabinet partial discharge detection device's aversion, the nimble position that controls this looped netowrk cabinet partial discharge detection device improves detection efficiency.
Referring to fig. 1-8, two side walls in the rectangular tube 2 are provided with limit grooves 11 in a strip shape, and the limit grooves 11 are arranged along the length direction of the rectangular tube 2; concave parts 12 are symmetrically formed on two sides of the other end of the rectangular rod 6, and a stabilizing component is arranged in each concave part 12;
The stabilizing assembly comprises a connecting plate 13 which is arranged up and down, one end of the connecting plate 13 is connected in the concave part 12, the other end of the connecting plate 13 is rotatably connected with a roller body 36, and the roller body 36 can roll along the limit groove 11; in the process of moving the rectangular rod 6 out of the rectangular tube 2, the roller body 36 is attached to the limiting groove 11 to roll, so that stability of the rectangular rod 6 in the moving process is improved, a camera shooting picture is clearer, meanwhile, the roller body 36 can limit the moving stroke of the rectangular rod 6, the roller body 36 moves to the tail end position of the sliding groove 30, namely, when the roller body 36 moves to the position close to one end of the rectangular tube 2, the roller body 36 is propped against the inner side wall of the sliding groove 30, and the rectangular rod 6 is restrained, so that the rectangular rod 6 is prevented from being completely separated from the rectangular tube 2.
Referring to fig. 1 to 12, a first groove 14 is formed in the lower surface of the rectangular bar 6, and the first groove 14 is disposed near one end of the rectangular bar 6;
A supporting rod 15 is arranged in the first groove 14, one end of the supporting rod 15 is rotatably connected to the first groove 14 through a torsion spring, the position close to one end of the rectangular rod 6 is rotatably arranged, a rotating groove is formed in one half of the other end of the supporting rod 15, and a bayonet 16 is formed in the other half of the other end of the supporting rod; wheels 17 are rotatably connected to the rotating grooves;
A second groove 18 is formed in one side of the first groove 14, the second groove 18 is arranged in the rectangular rod 6, one side of the second groove 18 is communicated with one end of the first groove 14, a communication position point is opposite to the bayonet 16 on the support rod 15, and the other end of the second groove 18 extends horizontally to the other end of the rectangular rod 6 and vertically penetrates through the lower surface of the rectangular rod 6;
a release rod 19 is arranged in the second groove 18, the release rod 19 is used for controlling the rotation of the support rod 15, the release rod 19 is arranged along the shape of the second groove 18, one end of the release rod 19 extends to the position where the first groove 14 is communicated with the second groove 18 and is embedded in the bayonet 16, and the other end of the release rod 19 vertically extends to the lower surface of the rectangular rod 6;
The back surface of one end of the release rod 19 is connected to the inner side wall of the second groove 18 through a spring 20;
The inner bottom surface of the rectangular tube 2 is provided with a groove 21, the groove 21 is arranged at a position close to one end of the rectangular tube 2, a shifting block 22 is arranged in the groove 21, and the shifting block 22 is rotationally connected in the groove 21 through a torsion spring; when the rectangular rod 6 extends for a long distance, the gravity center of the whole ring main unit partial discharge detection device is deviated to one end position of the rectangular rod 6, and at the moment, for an maintainer, the operation is laborious and the position of the detection probe 1 is not easy to control, and for this reason, a supporting rod 15 is arranged at one end position of the rectangular rod 6, and the supporting rod 15 can support the rectangular rod 6 on the ground; as for the use of the support rod 15, the use of the support rod 15 is triggered when the rectangular rod 6 extends for a certain length, that is, when the rectangular rod 6 extends for a length longer than half of its own length, the support rod 15 is triggered; if the supporting rod 15 is used at first, the flexibility of the ring main unit partial discharge detection device is affected;
When the extension length of the rectangular rod 6 exceeds half of the extension length of the rectangular rod, namely the other end of the release rod 19 is in contact with the shifting block 22, the shifting block 22 shifts the release rod 19 to move towards the other end of the rectangular rod 6, meanwhile, one end of the release rod 19 is separated from the bayonet 16, at the moment, the other end of the support rod 15 is free from the constraint fixation of the release rod 19, the support rod 15 rotates and points to the ground under the torsion of a torsion spring connected with the support rod 15, the wheels 17 are supported on the ground, and at the moment, the ring main unit partial discharge detection device is erected on the ground by the support rod 15 and the rotating rod 7, so that the ring main unit partial discharge detection device can be stabilized on the ground, the operation is convenient, and the position of the detection probe 1 is conveniently controlled;
after the ring main unit partial discharge detection device is used, the supporting rod 15 is rotated and extruded into the first groove 14, the inclined surface at the position of the bayonet 16 extrudes one end of the release rod 19 to force the release rod 19 to retract, when the bayonet 16 is opposite to one end of the release rod 19, the release rod 19 is embedded into the bayonet 16 again under the elasticity of the spring 20 connected with the release rod 19, the supporting rod 15 is fixedly accommodated, the rear driving motor is accommodated, and the rectangular rod 6 is accommodated in the rectangular tube 2.
Referring to fig. 9, 10, 13 and 14, the other end of the rectangular rod 6 is also provided with an auxiliary component, the auxiliary component is used for extending the rectangular rod 6, the auxiliary component comprises an extending rod 23, racks 5 are arranged on two side walls of the extending rod 23, an inserting rod 24 is arranged at one end of the extending rod 23, and the inserting rod 24 can be inserted into an inserting hole 25 formed at the other end of the rectangular rod 6; the other end of the extension rod 23 is provided with a concave part 12 on both sides, and the concave part 12 is also provided with a roller body 36; the extension rod 23 can lengthen the length of the rectangular rod 6, when the extension rod 23 is used, the rectangular rod 6 is pushed towards the other end direction of the rectangular tube 2, the concave part 12 of the rectangular tube 2 is exposed, then the roller body 36 is rotated into the concave part 12, then the inserted rod 24 is inserted into the jack 25, then the motor is driven, the motor driving gear 4 is rotated, the rectangular rod 6 and the extension rod 23 synchronously move towards the one end direction of the rectangular tube 2, after the rectangular rod 6 completely extends out of the rectangular tube 2, then the extension rod 23 extends out of the rectangular tube 2, and the displacement stroke amount of the detection probe 1 is prolonged.
Referring to fig. 9, 10, 13 and 14, a relief groove 26 is formed between the recess 12 and the insertion hole 25, and the relief groove 26 communicates with the recess 12 and is provided therethrough; a rotating shaft 27 is fixedly connected to one end of the connecting plate 13, the rotating shaft 27 is rotatably connected to the inner top surface and the inner bottom surface of the concave part 12, and a locking block 28 is arranged in the middle of the rotating shaft 27;
A notch 29 is formed in the inserted link 24, the inserted link 24 is inserted into the insertion hole 25, the notch 29 is opposite to the abdication groove 26, and the locking piece 28 is rotationally embedded in the notch 29; in consideration of the connection stability between the extension rod 23 and the rectangular rod 6, the locking piece 28 is arranged, after the roller body 36 on the rectangular rod 6 is pushed into the concave part 12, the locking piece 28 is deflected into the yielding groove 26, at the moment, the end part of the locking piece 28 is embedded into the notch 29, and the inserted rod 24 is locked in the jack 25, so that the rectangular rod 6 and the extension rod 23 are locked together, and the connection stability is improved.
Referring to fig. 1-6, the two sides of the rectangular tube 2 are provided with a sliding groove 30, the sliding groove 30 is arranged along the length direction of the rectangular tube 2, the sliding groove 30 penetrates to the other end of the rectangular tube 2, a holding rod 31 is connected in a sliding manner in the sliding groove 30, and a handle 32 is arranged at the outer side of the end part of the holding rod 31; the chute 30 is provided with the holding rod 31, the surface of the holding rod 31 and the inner surface of the chute 30 have larger resistance, the position of the rectangular tube 2 can be controlled by holding the handle 32, and the displacement stroke of the ring main unit partial discharge detection device can be further prolonged by arranging the holding rod 31.
Referring to fig. 1-6, the two side walls of the rectangular tube 2 are symmetrically provided with magnetic blocks 33 for adsorbing the wheel body 8, the rotating rod 7 rotates to be in a state of overlapping with the rectangular tube 2, and the magnetic blocks 33 can adsorb and fix the wheel body 8; after the ring main unit partial discharge detection device is used, the holding rod 31 is pushed into the sliding groove 30 forcefully, the supporting rod 15 rotates into the first groove 14, and meanwhile, the rotating rod 7 rotates, so that the rotating rod 7 and the rectangular pipe 2 are in a superposition state, at the moment, the wheel body 8 is adsorbed on the rectangular pipe 2 by the adsorption force of the magnetic block 33, the rotating rod 7 is stabilized, and the ring main unit partial discharge detection device is convenient to store.
Referring to fig. 13 and 14, a claw 34 is provided in each of the concave portions 12, and the claw 34 can clamp the roller body 36; the provided clamping jaw 34, the clamping jaw 34 can stabilize the roller body 36 in the concave part 12, and at the moment, the locking piece 28 can be stabilized in the yielding groove 26, so that the locking piece 28 is stably embedded in the notch 29, and the connection stability between the extension rod 23 and the rectangular rod 6 is further improved.
Referring to fig. 1-6, a handle 35 is arranged on the upper surface of the rectangular tube 2; set up handle 35, after this looped netowrk cabinet partial discharge detection device uses, rectangular bar 6 accomodates to rectangular pipe 2 in, and accessible handle 35 carries this looped netowrk cabinet partial discharge detection device, makes things convenient for this looped netowrk cabinet partial discharge detection device's transport.
Working principle: according to the ring main unit partial discharge detection device, the detection probe 1 can be extended to the deep part of the ring main unit group, and personnel are not required to be shifted to a potential electric shock dangerous area; during specific operation, an operator places the extension unit on one side outside the ring main unit group, at the moment, the driving structure is operated, the driving structure further comprises a motor for driving the gear 4 to rotate, the motor drives the gear 4 to rub the rack 5, the rack 5 drives the rectangular rod 6 to slowly extend out of the rectangular tube 2, and the detection probe 1 at one end position of the rectangular rod 6 is pushed into the ring main unit group, in order to facilitate the operator to clearly see the displacement position of the detection probe 1, a camera can be arranged on an end shell of the detection probe 1, the camera transmits pictures to the detection controller in a wireless or wired manner, and the position of the detection probe 1 can be clearly seen through a display screen on the detection controller, so that partial discharge detection can be performed more accurately; the detection probe 1 is shifted into the ring main unit group, so that maintenance personnel can perform partial discharge detection operation at a position far away from the ring main unit, the safety is improved, meanwhile, the ring main unit partial discharge detection device can also have higher flexibility through a narrower space, and when the ring main unit partial discharge detection device is not used, the rectangular rod 6 can be controlled by a motor to move for resetting and move into the rectangular pipe 2, so that the ring main unit partial discharge detection device can be conveniently stored;
Through the erection component, the ring main unit partial discharge detection device can be erected on the ground, so that the ring main unit partial discharge detection device is convenient to shift; the rotating rod 7 extends to point to the ground, and under the cooperation of the limiting rod 10 and the limiting block 9, the rotating rod 7 and the rectangular pipe 2 are arranged at an obtuse angle, and the rectangular pipe 2 is pushed or pulled at the moment, so that the displacement of the ring main unit partial discharge detection device can be realized, the position of the ring main unit partial discharge detection device is flexibly controlled, and the detection efficiency is improved;
In the process of moving the rectangular rod 6 out of the rectangular tube2, the roller body 36 is attached to the limiting groove 11 to roll, so that stability in the moving process of the rectangular rod 6 is improved, a picture shot by a camera is clearer, meanwhile, the roller body 36 can limit the moving stroke of the rectangular rod 6, the roller body 36 moves to the tail end position of the chute 30, namely, when the roller body 36 moves to a position close to one end of the rectangular tube2, the roller body 36 is propped against the inner side wall of the chute 30, and the rectangular rod 6 is restrained, so that the rectangular rod 6 is prevented from being completely separated from the rectangular tube 2;
When the rectangular rod 6 extends for a long distance, the gravity center of the whole ring main unit partial discharge detection device is deviated to one end position of the rectangular rod 6, and at the moment, for an maintainer, the operation is laborious and the position of the detection probe 1 is not easy to control, and for this reason, a supporting rod 15 is arranged at one end position of the rectangular rod 6, and the supporting rod 15 can support the rectangular rod 6 on the ground; as for the use of the support rod 15, the use of the support rod 15 is triggered when the rectangular rod 6 extends for a certain length, that is, when the rectangular rod 6 extends for a length longer than half of its own length, the support rod 15 is triggered; if the supporting rod 15 is used at first, the flexibility of the ring main unit partial discharge detection device is affected;
When the extension length of the rectangular rod 6 exceeds half of the extension length of the rectangular rod, namely the other end of the release rod 19 is in contact with the shifting block 22, the shifting block 22 shifts the release rod 19 to move towards the other end of the rectangular rod 6, meanwhile, one end of the release rod 19 is separated from the bayonet 16, at the moment, the other end of the support rod 15 is free from the constraint fixation of the release rod 19, the support rod 15 rotates and points to the ground under the torsion of a torsion spring connected with the support rod 15, the wheels 17 are supported on the ground, and at the moment, the ring main unit partial discharge detection device is erected on the ground by the support rod 15 and the rotating rod 7, so that the ring main unit partial discharge detection device can be stabilized on the ground, the operation is convenient, and the position of the detection probe 1 is conveniently controlled;
After the ring main unit partial discharge detection device is used, the supporting rod 15 is rotated and extruded into the first groove 14, the inclined surface at the position of the bayonet 16 extrudes one end of the release rod 19 to force the release rod 19 to retract, when the bayonet 16 is opposite to one end of the release rod 19, the release rod 19 is embedded into the bayonet 16 again under the elasticity of the spring 20 connected with the release rod 19, so that the supporting rod 15 is fixedly accommodated, a rear driving motor is accommodated, and the rectangular rod 6 is accommodated in the rectangular tube 2;
The other end of the extension rod 23 is provided with a concave part 12 on both sides, and the concave part 12 is also provided with a roller body 36; the extension rod 23 can extend the length of the rectangular rod 6, when the extension rod 23 is used, the rectangular rod 6 is pushed towards the other end direction of the rectangular tube 2, the concave part 12 of the rectangular tube 2 is exposed, then the roller body 36 is rotated into the concave part 12, then the inserted rod 24 is inserted into the jack 25, then the motor is driven, the motor driving gear 4 is rotated, the rectangular rod 6 and the extension rod 23 synchronously move towards the one end direction of the rectangular tube 2, and when the rectangular rod 6 completely extends out of the rectangular tube 2, the extension rod 23 extends out of the rectangular tube 2, and the displacement stroke amount of the detection probe 1 is prolonged;
In consideration of the connection stability between the extension rod 23 and the rectangular rod 6, the locking piece 28 is arranged, after the roller body 36 on the rectangular rod 6 is pushed into the concave part 12, the locking piece 28 is deflected into the yielding groove 26, at the moment, the end part of the locking piece 28 is embedded into the notch 29, and the inserted rod 24 is locked in the jack 25, so that the rectangular rod 6 and the extension rod 23 are locked together, and the connection stability is improved;
The sliding groove 30 is provided with the holding rod 31, the surface of the holding rod 31 and the inner surface of the sliding groove 30 have larger resistance, the position of the rectangular tube 2 can be controlled by holding the handle 32, and the displacement stroke of the ring main unit partial discharge detection device can be further prolonged by arranging the holding rod 31; after the ring main unit partial discharge detection device is used, the holding rod 31 is forcefully pushed into the sliding groove 30, the supporting rod 15 rotates into the first groove 14, and meanwhile, the rotating rod 7 rotates, so that the rotating rod 7 and the rectangular pipe 2 are in a superposition state, at the moment, the wheel body 8 is adsorbed on the rectangular pipe 2 by the adsorption force of the magnetic block 33, and the rotating rod 7 is stabilized, so that the ring main unit partial discharge detection device is convenient to store;
The clamping jaw 34 is arranged, the clamping jaw 34 can stabilize the roller body 36 in the concave part 12, and the locking piece 28 can be stabilized in the abdication groove 26 at the moment, so that the locking piece 28 is stably embedded in the notch 29, and the connection stability between the extension rod 23 and the rectangular rod 6 is further improved; after the ring main unit partial discharge detection device is used, the rectangular rod 6 is stored in the rectangular pipe 2, and the ring main unit partial discharge detection device can be lifted by the lifting handle 35, so that the ring main unit partial discharge detection device can be conveniently carried.
The foregoing has shown and described the basic principles, principal features and advantages of the 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 (7)
1. Ring main unit partial discharge detection device, its characterized in that: comprises a detection probe (1) and an extension unit; the detection probe (1) is arranged on the extension unit; the extension unit can push the detection probe (1) between adjacent ring main units and comprises a fixed component and a movable component;
The fixed component comprises a rectangular pipe (2), through holes (3) are symmetrically formed in two sides of one end of the rectangular pipe (2), a driving structure is arranged at the position of each through hole (3), and the driving structure controls the movement of the movable component; the driving structure comprises a gear (4), the gear (4) is rotationally connected in the through hole (3), a rack (5) is meshed with the inner side of the gear (4), and the rack (5) is arranged on the movable assembly;
the movable assembly comprises a rectangular rod (6) which is connected in the rectangular pipe (2) in a sliding manner, racks (5) are fixedly connected to two sides of the rectangular rod (6), and a detection probe (1) is fixedly connected to the upper surface of one end of the rectangular rod (6);
Limiting grooves (11) in a strip shape are formed in two side walls in the rectangular tube (2), and the limiting grooves (11) are formed along the length direction of the rectangular tube (2); concave parts (12) are symmetrically formed in two sides of the other end of the rectangular rod (6), and a stabilizing assembly is arranged in each concave part (12);
The stabilizing assembly comprises a connecting plate (13) which is arranged up and down, one end of the connecting plate (13) is connected in the concave part (12), the other end of the connecting plate (13) is rotationally connected with a roller body (36), and the roller body (36) can roll along the limit groove (11);
a first groove (14) is formed in the lower surface of the rectangular rod (6), and the first groove (14) is arranged at a position close to one end of the rectangular rod (6);
A supporting rod (15) is arranged in the first groove (14), one end of the supporting rod (15) is rotationally connected to the first groove (14) through a torsion spring, the position close to one end of the rectangular rod (6) is rotationally arranged, a rotating groove is formed in one half of the other end of the supporting rod (15), and a bayonet (16) is formed in the other half of the other end of the supporting rod; the rotating groove is rotationally connected with a wheel (17);
a second groove (18) is formed in one side of the first groove (14), the second groove (18) is arranged inside the rectangular rod (6), one side of the second groove (18) is communicated with one end of the first groove (14), a communication position point is opposite to a bayonet (16) on the supporting rod (15), and the other end of the second groove (18) horizontally extends to the other end of the rectangular rod (6) and vertically penetrates through the lower surface of the rectangular rod (6);
A release rod (19) is arranged in the second groove (18), the release rod (19) is used for controlling the rotation of the support rod (15), the release rod (19) is arranged along the shape of the second groove (18), one end of the release rod (19) extends to the communication position of the first groove (14) and the second groove (18) and is embedded in the bayonet (16), and the other end of the release rod (19) vertically extends to the lower surface of the rectangular rod (6);
The back surface of one end of the release rod (19) is connected to the inner side wall of the second groove (18) through a spring (20);
The inner bottom surface of the rectangular tube (2) is provided with a groove (21), the groove (21) is arranged at a position close to one end of the rectangular tube (2), a shifting block (22) is arranged in the groove (21), and the shifting block (22) is rotationally connected in the groove (21) through a torsion spring;
the other end of rectangle pole (6) still is equipped with auxiliary assembly, and auxiliary assembly is used for extension rectangle pole (6), and auxiliary assembly includes extension pole (23), and the both sides wall of extension pole (23) all sets up rack (5), and the one end of extension pole (23) is equipped with inserted bar (24), and inserted bar (24) can insert and establish in jack (25) that the rectangle pole (6) other end was seted up.
2. The ring main unit partial discharge detection device according to claim 1, wherein: the rectangular pipe (2) is symmetrically provided with erection components, the erection components can erect the extension unit on the ground, the erection components are arranged at positions close to one end of the rectangular pipe (2), the erection components comprise rotating rods (7), one ends of the rotating rods (7) are rotationally connected with the rectangular pipe (2), and the other ends of the rotating rods (7) are rotationally connected with wheel bodies (8);
a limiting block (9) is arranged at one end of the rotating rod (7); the rectangular pipe (2) is equipped with gag lever post (10) with bull stick (7) rotation tie point one side, and stopper (9) can support in gag lever post (10), and bull stick (7) are the obtuse angle setting with rectangular pipe (2).
3. The ring main unit partial discharge detection device according to claim 1, wherein: a relief groove (26) is formed between the concave part (12) and the jack (25), and the relief groove (26) is communicated with the concave part (12) and is communicated with the jack; one end of the connecting plate (13) is fixedly connected with a rotating shaft (27), the rotating shaft (27) is rotatably connected to the inner top surface and the inner bottom surface of the concave part (12), and a locking block (28) is arranged in the middle of the rotating shaft (27);
the inserting rod (24) is provided with a notch (29), the inserting rod (24) is inserted into the inserting hole (25), the notch (29) is opposite to the yielding groove (26), and the locking block (28) is rotationally embedded into the notch (29).
4. The ring main unit partial discharge detection device according to claim 1, wherein: the two sides of the rectangular pipe (2) are provided with sliding grooves (30), the sliding grooves (30) are formed in the length direction of the rectangular pipe (2), the sliding grooves (30) penetrate through the other end of the rectangular pipe (2), the sliding grooves (30) are connected with holding rods (31) in a sliding mode, and handles (32) are arranged on the outer sides of the end portions of the holding rods (31).
5. The ring main unit partial discharge detection device according to claim 4, wherein: magnetic blocks (33) for adsorbing the wheel bodies (8) are symmetrically arranged on the side walls of the two sides of the rectangular tube (2), the rotating rod (7) rotates to be in a superposition state with the rectangular tube (2), and the magnetic blocks (33) can adsorb and fix the wheel bodies (8).
6. A ring main unit partial discharge detection apparatus according to claim 3, wherein: a claw (34) is arranged in each concave part (12), and the claws (34) can clamp the roller body (36).
7. The ring main unit partial discharge detection device according to claim 5, wherein: the upper surface of the rectangular pipe (2) is provided with a handle (35).
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| CN202410713306.5A CN118275839B (en) | 2024-06-04 | 2024-06-04 | Ring main unit partial discharge detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101710167A (en) * | 2009-12-09 | 2010-05-19 | 山西省电力公司电力科学研究院 | On-site automatic detection device of gas insulated switchgear |
| CN113687196A (en) * | 2021-08-18 | 2021-11-23 | 国网湖南省电力有限公司 | An intelligent switch cabinet state detection device |
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|---|---|---|---|---|
| EP0482229B1 (en) * | 1990-10-22 | 1994-08-10 | Asea Brown Boveri Ag | Device for monitoring partial discharges in winding elements of an electric machine |
| AUPQ975100A0 (en) * | 2000-08-29 | 2000-09-21 | Siemensindustrial Services Ltd | Re-locatable partial discharge transducer head |
| CA2508428A1 (en) * | 2005-05-20 | 2006-11-20 | Hydro-Quebec | Detection, locating and interpretation of partial discharge |
| KR102530465B1 (en) * | 2020-10-21 | 2023-05-10 | 한국전력공사 | Apparatus for sensing partial discharge of power cable and method for diagnosing partial discharge of power cable unsing the same |
| CN113791375B (en) * | 2021-10-22 | 2022-07-15 | 浙江万胜智能科技股份有限公司 | Module power-on detection device based on Internet of things electric energy meter |
| CN114629021A (en) * | 2022-02-18 | 2022-06-14 | 江西俊朗电力装备有限公司 | Ring main unit partial discharge online detection device |
| CN114660425A (en) * | 2022-03-29 | 2022-06-24 | 常州新电自动化设备有限公司 | Fault indication system with temperature measurement and partial discharge detection functions |
| CN116643131B (en) * | 2023-07-14 | 2023-12-29 | 北京瑞天恒业科技发展有限公司 | Ring main unit body insulation detection device and use method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710167A (en) * | 2009-12-09 | 2010-05-19 | 山西省电力公司电力科学研究院 | On-site automatic detection device of gas insulated switchgear |
| CN113687196A (en) * | 2021-08-18 | 2021-11-23 | 国网湖南省电力有限公司 | An intelligent switch cabinet state detection device |
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