CN104614646B - Insulating barrier coaxial rotating slicer device for extrusion insulating power cable - Google Patents
Insulating barrier coaxial rotating slicer device for extrusion insulating power cable Download PDFInfo
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- CN104614646B CN104614646B CN201510026291.6A CN201510026291A CN104614646B CN 104614646 B CN104614646 B CN 104614646B CN 201510026291 A CN201510026291 A CN 201510026291A CN 104614646 B CN104614646 B CN 104614646B
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Abstract
A kind of insulating barrier coaxial rotating slicer device for extrusion insulating power cable of power cable detection field, including：The cable main card disk and cable vice card disk for being oppositely arranged and being connected by chuck lazy-tongs, power cable sample is fixedly installed between cable main card disk and cable vice card disk and positioned at the top of cutting mechanism, and drive mechanism is connected with cable main card disk and cutting mechanism respectively.The present invention can realize the continuous uniform cutting on the inside of from insulating barrier outer surface to insulating barrier, and slice width is determined that slice thickness is by programme-control, and thickness range is in 0.1mm-1mm by slice thickness and thickness of insulating layer.
Description
Technical field
It is specifically a kind of electric for extruded insulation electric power the present invention relates to a kind of technology of power cable detection field
The insulating barrier coaxial rotating slicer device of cable.
Background technology
Extrusion insulating power cable is one of visual plant in high voltage power transmission, stability of its safe operation to power transmission network
It is most important.Security and stability in workmanship and running to ensure cable, often needs the insulation feelings to power cable
Condition carries out the state estimation of system, and the reason of cable insulation section, change detection are exactly than one of more conventional condition detection method.
In current packaged cable insulating barrier section detection, the acquisition of cable insulation section is mainly used and cable core
Parallel cutting way, is characterized in that installation operation is easy, but there is also obvious limitation：First, this cutting way is obtained
The insulating barrier slice width taken is limited, and Breadth Maximum is mainly determined by core sectional area and thickness of insulating layer, to the low electricity such as 10kV
That presses grade extrudes power cable, and insulating barrier slice width is very small, to carry out the conductance under High-Field, space charge measurement,
Because measuring electrode is relatively large, insulating barrier section will occur creeping discharge and cause the measurement can not during high voltage measuring
Carry out；Secondly, the thickness of cutting of current this kind of topping machanism can not precise control, mainly according to the visual determination of operating personnel,
Therefore the slice thickness uniformity obtained is not high, it is impossible to ensure that thickness of sample parameter is consistent, and error is introduced into analysis；Most
Afterwards, it is also the defect of core the most, this kind of section reaction is insulation progressive formation of the insulating barrier by surface → inside → surface,
Can not the state of insulation at parameter reflection cable insulation which position that obtains of discriminatory analysis, and actual cable is in manufacture, operation
During, the performance parameter of insulating barrier diverse location is simultaneously different, therefore the reason based on such section acquisition, change parameter can not be accurate
Really analyze the state of insulation of cable.
By the retrieval discovery to prior art, Chinese patent literature CN102931566A discloses (bulletin) day
2013.02.13, a kind of cable slicer, including base are disclosed, middle plate and top board, the middle plate are fixed on by telescopic
On base, top board is fixed on the end of telescopic, and top board is provided with the lowering or hoisting gear for being used for driving telescopic to act, the middle plate
Electric rotating machine is provided between base, motor is fixed on the bottom of middle plate, and the end of the electric machine rotational axis is provided with tension disk,
Top board is provided with first through hole with tension disk correspondence position, and the first through hole is provided with section film.But before the technical work first
Need to strip down insulating barrier is intact from conductor, this is relatively time consuming for actual power cable；In addition, obtaining
Insulation section be the slices across of cable insulation, i.e., with the cutting of cable core vertical direction, cut into slices as coaxial circular ring structure,
Comprising cable insulation outer layer to inner insulating layer structure, its slice width that insulate has very, is unfavorable for the electrical property measurement under high pressure, and
The performance parameter of acquisition can not judge which position of cable insulation characterized.From the above mentioned, for overcome conventional section mode lack
Point, is badly in need of being improved conventional extrusion insulating power cable insulating barrier dicing method at present.
The content of the invention
The present invention is directed to deficiencies of the prior art, proposes a kind of insulating barrier for extrusion insulating power cable
Coaxial rotating slicer device, it is possible to achieve the continuous uniform cutting on the inside of from insulating barrier outer surface to insulating barrier, slice width
Determine that slice thickness is by programme-control by slice thickness and thickness of insulating layer.
The present invention is achieved by the following technical solutions, and the present invention includes：It is oppositely arranged and by chuck lazy-tongs
Connected cable main card disk and cable vice card disk, power cable sample is fixedly installed between cable main card disk and cable vice card disk
And positioned at the top of cutting mechanism, drive mechanism is connected with cable main card disk and cutting mechanism respectively.
Described drive mechanism includes：For driving the main motor of cable main card disk, the auxiliary for driving and cutting mechanism
Motor and the PLC being connected respectively with main motor and stand-by motor.
Described cutting mechanism includes：Stepping fixed station and the rotation of the stepping with stepping line bar being arranged on
Disk, stepping line bar is provided with the cutter for cutting.
Described power cable sample includes successively from inside to outside：Metal core, interior semi-conductive layer, major insulation, partly lead outside
Electric layer, metal armor layers, sheath.
Technique effect
Compared with prior art, the insulating barrier coaxial rotating of the achievable heavy insulation extrusion insulating power cable of the present invention is cut
Cut, cable simple installation, and after cutting parameter is set through program, cutting operation can be automatically performed.
The present invention can effectively improve the width of insulation section, so as to be under the physical dimension of identical voltage class cable
High-Field conductance, space charge etc. need to apply the sliced piece specimen that the higher electrical property measurement of voltage provides enough width, that is, increase
The creepage distance of sample, suppresses that creeping discharge phenomenon occurs under high electric field.
The present invention controls cable main card disk, the rotation of cable vice card disk and cutting tool step distance using PLC,
So as to realize the uniform cutting of insulating barrier, the insulation slice thickness of acquisition is controllable and integral thickness is uniform, and thickness range exists
0.1mm‐1mm。
The present invention during power cable rotary sample using coaxially being cut insulating barrier, and the insulation of acquisition is cut
Piece is to divide equally section from cable insulation outer surface to the radial direction of insulating barrier inner surface, therefore the sliced piece specimen obtained can study electricity
The reason of cable layer diverse location, change characteristic.
Brief description of the drawings
Fig. 1 is the overall structure diagram of device；
Fig. 2 is cable main card dish structure schematic diagram, and wherein a is profile, and b is right side view；
Fig. 3 is cable vice card dish structure schematic diagram, and wherein a is profile, and b is left side view；
Fig. 4 is cable general structure and pretreatment schematic diagram；
Fig. 5 is cable coaxial rotating radial cutting path schematic diagram.
In figure：Cable main card disk 1, cable vice card disk 2, chuck lazy-tongs 3, cable installation fittings 4, stepping rotating disk 5, step
Enter line bar 6, stepping fixed station 7, cutting tool 8, main motor 9, stand-by motor 10, PLC 11 and power cable sample 12.
Embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementations
Example.
Embodiment 1
As shown in figure 1, the present embodiment includes：The He of cable main card disk 1 for being oppositely arranged and being connected by chuck lazy-tongs 3
Cable vice card disk 2, power cable sample 12 is fixedly installed between cable main card disk 1 and cable vice card disk 2 and positioned at cutter
The top of structure, drive mechanism is connected with cable main card disk 1 and cutting mechanism respectively.
Described drive mechanism includes：For driving the main motor 9 of cable main card disk 1, for the auxiliary of driving and cutting mechanism
Help motor 10 and the PLC 11 being connected respectively with main motor 9 and stand-by motor 10.
Described cutting mechanism includes：Stepping fixed station 7 and the rotation of the stepping with stepping line bar 6 being arranged on
Disk 5, stepping line bar 6 is provided with the cutter 8 for cutting.
As shown in Fig. 2 four are equipped with described cable main card disk 1 and cable vice card disk 2 is used to fix power cable
The cable installation fittings 4 of sample 12.
To ensure being in cable main card disk between coaxial position, four cable installation fittingses 4 by interior for power cable sample
The lazy-tongs put are connected to realize synchronization action, that is, rotate one of cable installation fittings 4, other three cable installation fittingses are same
Step rotation.
For convenience of the installation of power cable sample, described cable vice card disk 2 uses hollow structure, such as Fig. 3 (a) profiles
It is shown, power cable sample can be inserted cable main card disk 1 by the center of cable vice card disk 2 during installation.
As shown in figure 4, described power cable sample 12 includes successively from inside to outside：Metal core 13, interior semi-conductive layer
14th, major insulation 15, outer semiconducting layer 16, metal armor layers 17, sheath 18.
Cutting is accomplished by the following way in the present embodiment：
Step 1, when carrying out before formal cable insulation cutting, it is necessary to pre-processed to power cable sample, cut for guarantee
Cutting knife tool 8 is not damaged, it is necessary to first unload the metal armour layer 17 and sheath 18 near the cutting zone of power cable, makes outer half
Conductive layer 16 is exposed.If power cable then only needs to unload lower jacket 18 without metal armour layer, such as low pressure 10kV Electricals.
After the completion of power cable sample 12 is pre-processed, cable sample is passed through and enters cable after the centre bore of cable vice card disk 2
Main card disk 1, and by respective four cable installation fittingses 4 on cable main card disk 1 and cable vice card disk 2 by power cable sample 12
It is fixed.
After the completion of step 2, fixation, the thickness of major insulation 15, the section of power cable sample 12 are set in PLC 11
Thickness, chip rate, PLC 11 will calculate the rotary speed of main motor 9 and stand-by motor 10, subsequent main motor 9 automatically
Start rotation with stand-by motor 10, driving cable main card disk 1 and stepping rotating disk 5 rotate.
Step 3, consistent to ensure the two ends moment of torsion of power cable sample 12, cable vice card disk 2 passes through the He of chuck lazy-tongs 3
The synchronous same-speed of cable main card disk 1 rotates.The driving stepping of stand-by motor 10 rotating disk 5 is rotated, and stepping screw mandrel 6 is rotated with, and is promoted
Cutting tool 8 on stepping screw mandrel 6 is moved forward, so as to carry out coaxial rotating radial cutting to cable insulation 15.
Step 4, the coaxial rotating radial cutting path schematic diagram of power cable sample 12 are as shown in figure 5, first from outer half
Conductive layer 17 starts cutting, and then main insulating layer 13 is cut, and after cutting is close to interior semi-conductive layer 16, PLC is sent
Instruction allows stand-by motor 10 to turn to rotation, so as to complete the withdrawing of cutting tool 8；
Step 5, last PLC send the disconnection power command of main motor 9, make and cable main card disk 1, cable vice card disk
2 and power cable sample 12 stop the rotation.
In the present embodiment：Power cable sample 12 is power cable, conductor cross sectional area 1000mm2, major insulation thickness 9mm,
Length 300mm, armour layer containing metal 17, the metal armour layer 17 and the width of sheath 18 shed during pretreatment is 100mm.Cutting
The width of cutter 8 can select the cutting tool 8 of different in width as needed in 50-80mm, and slice thickness is 0.3mm, chip rate
For 1mm/s.
Claims (3)
1. a kind of insulating barrier coaxial rotating slicer device for extrusion insulating power cable, it is characterised in that including：Relatively
The cable main card disk and the cable vice card disk of hollow structure for setting and being connected by chuck lazy-tongs, power cable sample are fixed
Be arranged between cable main card disk and cable vice card disk and positioned at the top of cutting mechanism, drive mechanism respectively with cable main card disk
It is connected with cutting mechanism；
Described drive mechanism includes：For driving the main motor of cable main card disk, the stand-by motor for driving and cutting mechanism
And the PLC being connected respectively with main motor and stand-by motor；
Described cutting mechanism includes：Stepping fixed station and the stepping rotating disk with stepping line bar being arranged on, step
Enter line bar and be provided with the cutter for being used for cutting；
Enter cable main card disk after cable vice card center hole by the way that cable sample is passed through, and by cable main card disk and cable pair
Respective four cable installation fittingses on chuck fix power cable sample, and power cable sample is set in PLC
Major insulation thickness, slice thickness, chip rate, PLC will the automatic rotary speed for calculating main motor and stand-by motor,
Subsequent main motor and stand-by motor start rotation, driving cable main card disk and stepping rotation disc spins, and cable vice card disk passes through card
Disk lazy-tongs and the rotation of cable main card disk synchronous same-speed, stand-by motor driving stepping rotation disc spins, stepping screw mandrel revolve therewith
Turn, promote the cutting tool being arranged on stepping screw mandrel to move forward, so as to carry out coaxial rotating radial cut to cable insulation
Cut, cut first since outer semiconducting layer, then main insulating layer is cut, after cutting is close to interior semi-conductive layer, PLC controls
Device, which sends instruction, allows stand-by motor to turn to rotation, so as to complete cutting tool withdrawing, last PLC sends disconnection main motor
Power command, makes and cable main card disk, cable vice card disk and power cable sample stop the rotation.
2. the insulating barrier coaxial rotating slicer device according to claim 1 for extrusion insulating power cable, it is special
Levying is, four cables for being used to fix power cable sample are equipped with described cable main card disk and cable vice card disk and are fastened
It is connected between part, four cable installation fittingses by built-in lazy-tongs to realize synchronization action, that is, rotates one of cable
Fastener, other three cable installation fittings synchronous rotaries, so that it is same to realize that the power cable sample and cable main card disk are in
Shaft position.
3. the insulating barrier coaxial rotating slicer device according to claim 1 for extrusion insulating power cable, it is special
Levying is, the width of described cutter can select different in width as needed, slice thickness is 0.3mm in 50-80mm, section speed
Spend for 1mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510026291.6A CN104614646B (en) | 2015-01-19 | 2015-01-19 | Insulating barrier coaxial rotating slicer device for extrusion insulating power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510026291.6A CN104614646B (en) | 2015-01-19 | 2015-01-19 | Insulating barrier coaxial rotating slicer device for extrusion insulating power cable |
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| CN104614646A CN104614646A (en) | 2015-05-13 |
| CN104614646B true CN104614646B (en) | 2017-07-18 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760378A (en) * | 2018-06-19 | 2018-11-06 | 南方电网科学研究院有限责任公司 | A kind of cable insulation sample cutter device and method |
| CN109849065B (en) * | 2019-01-21 | 2020-09-22 | 安徽誉林汽车部件有限公司 | New energy automobile battery insulating layer cutting device |
| CN110160822B (en) * | 2019-04-25 | 2021-08-20 | 国网山东省电力公司东营供电公司 | Cable insulation layer sample cutting device and method |
| CN110196364B (en) * | 2019-05-29 | 2021-05-04 | 广东粤缆电线电缆有限公司 | Electric cross-linked cable slicing machine |
| CN110571718B (en) * | 2019-08-27 | 2021-09-17 | 河北西绝慧控电气科技有限公司 | Intelligent automatic cutting process for high-voltage cable |
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| JPH11211783A (en) * | 1998-01-27 | 1999-08-06 | Fujikura Ltd | Method for diagnosing deterioration of power cable joint |
| CN101598636A (en) * | 2009-07-13 | 2009-12-09 | 中利科技集团股份有限公司 | Cable foaming insulation layer sampling device |
| CN101750232A (en) * | 2008-12-18 | 2010-06-23 | 北京市电力公司 | Method for slicing cable joint |
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| JPH11211783A (en) * | 1998-01-27 | 1999-08-06 | Fujikura Ltd | Method for diagnosing deterioration of power cable joint |
| CN101750232A (en) * | 2008-12-18 | 2010-06-23 | 北京市电力公司 | Method for slicing cable joint |
| CN101598636A (en) * | 2009-07-13 | 2009-12-09 | 中利科技集团股份有限公司 | Cable foaming insulation layer sampling device |
| CN102931566A (en) * | 2012-11-13 | 2013-02-13 | 江苏亨通线缆科技有限公司 | Cable slicing machine |
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Effective date of registration: 20210826 Address after: 200030 No. 1954, Huashan Road, Shanghai, Xuhui District Patentee after: SHANGHAI JIAO TONG University Patentee after: China Southern Power Grid Research Institute Co.,Ltd. Address before: 200240 No. 800, Dongchuan Road, Shanghai, Minhang District Patentee before: SHANGHAI JIAO TONG University Patentee before: CSG POWER GRID TECHNOLOGY RESEARCH CENTER |
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