CN106443090A - Segmental conductor resistance test auxiliary tool and test device - Google Patents
Segmental conductor resistance test auxiliary tool and test device Download PDFInfo
- Publication number
- CN106443090A CN106443090A CN201611094349.1A CN201611094349A CN106443090A CN 106443090 A CN106443090 A CN 106443090A CN 201611094349 A CN201611094349 A CN 201611094349A CN 106443090 A CN106443090 A CN 106443090A
- Authority
- CN
- China
- Prior art keywords
- conductor
- collar
- resistance test
- conductor resistance
- milliken
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
Abstract
The invention relates to a segmental conductor resistance test auxiliary tool and a test device. The segmental conductor resistance test auxiliary tool comprises a conductor tightly pressing device, a conductor lantern ring and a lifting device, wherein the conductor tightly pressing device comprises an upper pressing block and a lower pressing block; the conductor lantern ring comprises an upper lantern ring and a lower lantern ring; the lower lantern ring is arranged in the lower pressing block in an encircling mode; the upper lantern ring and the lower lantern ring are in butt joint to form a clamping space for clamping a segmental conductor; the upper pressing block encircles the upper lantern ring and is in butt joint with the lower pressing block; and the lifting device is arranged on the upper pressing block in a pressing mode. The segmental conductor resistance test auxiliary tool is clamped on the segmental conductor on the outer side of a segmental conductor resistance test clamp for testing the resistance of the segmental conductor, and the traditional clamp rhombus tightly pressing mode is replaced by an annular conductor lantern ring tightly pressing mode, so the fact that the section shape of the conductor is not changed during test is guaranteed, the problem that the segmental conductor is dispersed after an insulating layer is removed is effectively avoided, and the reliability and the accuracy of the measuring result are guaranteed.
Description
Technical field
The present invention relates to power supply technique field, more particularly to one kind are led for the test segmentation of auxiliary partition conductor resistance fixture
The milliken conductor resistance test accessory of body D.C. resistance and test device.
Background technology
High pressure, ultra-high-voltage cable conductor section are big, current-carrying capacity height, due to the electromagnetic field effect of alternating current, electricity in conductor
Stream can be intended to the side of conductor outside surfaces and adjacent cable, that is, kelvin effect and approach effect, cause electric current in conductor
Interior skewness, the section for having electric current to pass through is less than the actual cross-section of conductor, that is to say, that conductor actual resistance is higher than conductor
Theoretical resistance.For overcoming this effect, cable conductor employs milliken conductor structure.With 800mm2As a example by conductor, respectively by single
Silk stranded, make 5 sector elements, between with insulating crepe paper isolate, then by 5 personal share block strandings be one five segmentation circle
Conductor, this kind of conductor structure is referred to as milliken conductor.Electric wire product standard is with 800mm2Conductor is boundary line, 800mm2Above to
Conductor structure is milliken conductor.
Traditional specimen holder has V-arrangement and two kinds of annular, and in general, V-arrangement fixture is only applicable to test single line or reality
Heart line.For heavy in section stranded conductor, as V-arrangement fixture is compressed with vertical direction, limit is not compressed, so with folder
The increase of clamp force, core deforms so as to which side root single line unclamps, or even is disengaged from contact so that test result dispersibility
Very big.Meanwhile, when to pretwist conductor tested conductor resistance, due to the fan-shaped corner angle direction difference of conductor, cause V-arrangement to press from both sides
The contact of tool is less good, causes contact resistance bigger than normal.And annulus clamp is along the circumferential direction compressed, although make in core
Each single line contact is tight, but due to eliminating the contact resistance between each single wire surface oxide layer, test result has certain
Dispersibility and yet suffer from error.So every time reply fixture endures strict scrutiny before detection, including fixture tightness with
And the cleaning situation between fixture.In addition, the resistivity size for manufacturing the copper material adopted by fixture itself is also possible to cause to survey
Examination error.
In sum, for heavy in section (>=800mm2) milliken conductor, in order to reduce its conductor of kelvin effect typically by several
Personal share block is constituted.Conventional conductor resistance measurement fixture is rhombus fixture, it cannot be guaranteed that current potential contact jaw isoelectric level during test, and leads
Current terminal electric current is caused to apply uneven, so as to affect milliken conductor D.C. resistance test value.
Content of the invention
Based on this, it is necessary to provide a kind of using cooperatively with milliken conductor resistance test fixture and led with being effectively improved heavy in section
The milliken conductor resistance test accessory of body direct current resistance m easurem ent accuracy.
A kind of milliken conductor resistance testing device of offer is provided.
A kind of milliken conductor resistance test accessory, which includes conductor compacting device, the conductor collar and hoisting apparatus, described
Conductor compacting device includes upper holder block and lower lock block, and the conductor collar includes the collar and lower collar；The lower collar is surrounded
In the lower lock block, the upper collar docks the grasping part to be formed for clamping milliken conductor with the lower collar, described
Upper holder block is surrounded on outside the upper collar and is docked with the lower lock block；The hoisting apparatus pressure is on the upper holder block.
Wherein in one embodiment, two relative surfaces of the upper collar and the lower collar are recessed to form half respectively
Circular arc upper groove and semicircular arc low groove, the upper groove and the low groove enclose to form the grasping part.
Wherein in one embodiment, the upper collar and the lower collar are made by casting in bronze and are formed.
Wherein in one embodiment, two relative surfaces of the upper holder block and the lower lock block are recessed respectively and are formed with
Indent under indent and semicircular arc on semicircular arc, the lower collar is contained in the lower indent, and the lower collar is outer
Ring wall is fitted tightly with the internal groove side wall of the lower indent；The upper collar is contained in the upper indent, and the upper collar
External annulus are fitted tightly with the internal groove side wall of the upper indent.
Wherein in one embodiment, the upper indent and the lower indent enclose to be formed for closely housing the conductor
The collar press space, space and the grasping part of pressing is concentric circular.
Wherein in one embodiment, the hoisting apparatus is hydraulic jack of the pressure above the upper holder block.
Wherein in one embodiment, the conductor compacting device includes bracing frame, and the lower lock block is fixedly installed on institute
State on bracing frame, the upper holder block is separably arranged at the top of the lower lock block.
A kind of milliken conductor resistance testing device, it include milliken conductor resistance test fixture and with the milliken conductor electricity
The milliken conductor resistance test accessory that resistance test fixture is used cooperatively, the milliken conductor resistance test accessory is held on described point
Cut on the milliken conductor resistance on the outside of conductor resistance test fixture, and the milliken conductor resistance test accessory is described above
Milliken conductor resistance test accessory.
Milliken conductor resistance test accessory of the present invention is held on to be surveyed for testing the milliken conductor resistance of milliken conductor resistance
On milliken conductor on the outside of examination fixture, rhombus in conventional brace is replaced to press pattern by the way of the ring shaped conductor collar presses,
During guarantee test, cross-sectional area of conductor shape will not change, and effectively prevent milliken conductor and scatter problem after insulating barrier is removed, ensure
The reliability of measurement result and accuracy.
Description of the drawings
Fig. 1 is the structural representation of milliken conductor resistance test accessory in a preferred embodiment of the present invention；
Fig. 2 is the structural representation of conductor hold down gag in milliken conductor resistance test accessory shown in Fig. 1；
Fig. 3 is the structural representation of the conductor collar in milliken conductor resistance test accessory shown in Fig. 1.
Specific embodiment
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field for belonging to the present invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the restriction present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all of combination of the Listed Items of pass.
Fig. 1 is refer to, in present pre-ferred embodiments, milliken conductor resistance test accessory 100 is held on leads positioned at segmentation
On milliken conductor on the outside of bulk resistor test fixture, with milliken conductor in auxiliary clamp test, it is ensured that during test, milliken conductor cuts
Face shape will not change, and effectively prevent milliken conductor and scatter problem after insulating barrier is removed, ensured the reliability of measurement result
Property and accuracy.Wherein, milliken conductor resistance test accessory 100 includes conductor compacting device 10, the conductor collar 30 and lifting
Device 50.
Refer to Fig. 2, specifically, conductor compacting device 10 substantially be in hollow cylindrical, it include upper holder block 11 and with upper
The lower lock block 13 that briquetting 11 coordinates.Wherein, upper holder block 11 is arranged on lower lock block 13, and encloses jointly to form use with lower lock block 13
Press space 120 (as Fig. 1) in house the conductor collar 30.
In this specific embodiment, upper holder block 11 and lower lock block 13 are in substantially all semi-cylindrical, its two relative surface
Depression forms on semicircular arc indent 130 under indent 110 and semicircular arc respectively.When upper holder block 11 is arranged on lower lock block 13
When, on semicircular arc, under indent 110 and semicircular arc, indent 130 encloses to form circle and press space 120 jointly.
Fig. 3 is refer to, the conductor collar 30 is tightly accommodated in and presses in space 120, and which includes the collar 31 and lower collar 33.
Wherein, lower collar 33 is surrounded in lower lock block 13, and the upper collar 31 docks the folder for being formed for clamping milliken conductor with lower collar 33
Space 320 is held, upper holder block 11 is surrounded on outside the collar 31 and is docked with lower lock block 13.
In this specific embodiment, the upper collar 31 and lower collar 33 are made by casting in bronze and are formed, the upper collar 31 and 33 phase of lower collar
To two surfaces be recessed respectively to form semicircular arc upper groove 310 and semicircular arc low groove 330, upper groove 310 and recessed
Groove 330 encloses to form the circular clamp space 320 that mates with milliken conductor outer contour shape.In this way, when upper holder block 13 is in lifting
When compressing the upper collar 31 under the effect of 50 pressure of device downwards, the upper collar 31 and lower collar 33 along the circumferential direction press compact conductor, make
In milliken conductor, each single line contact is tight, and the compatible degree between each stock conductor is good, and geometry is not changed in, it is ensured that test
Accuracy.
Additionally, upper indent 110 and lower indent 130 enclose to be formed press space 120 and upper groove 310 and low groove 330
It is concentric circular to enclose the grasping part 320 to be formed, and is so ensureing that being held on each stock in the milliken conductor in grasping part 320 leads
Body can be fitted tightly under the upper collar 31, lower collar 33, upper holder block 11 and 13 collective effect of lower lock block.In addition, 31 He of the upper collar
Lower collar 33 includes multiple different sizes, the suitable collar can be selected to be tested according to the diameter of tested milliken conductor before test
, it is not limited thereto.
Hoisting apparatus 50 is pressed on upper holder block 11, for applying the pressure of 13 close proximity of downward briquetting to upper holder block 11
Power.In this specific embodiment, hydraulic jack of the hoisting apparatus 50 for pressure above upper holder block, which is entered using lever principle
Row presses, convenient and strength-saving, and presses dynamics and freely can adjust, and will not damage tested milliken conductor by pressure because dynamics is excessive.Can manage
Xie Di, in some other embodiment, hoisting apparatus 50 can be other force application elements, be not limited thereto.
Further, conductor compacting device 10 includes bracing frame 15, and lower lock block 13 is fixedly installed on bracing frame 15, upper pressure
Block 11 is separably arranged at the top of lower lock block 13.In this specific embodiment, bracing frame 15 is all open state for four sides
Cuboid frame-shaped, lower lock block 13 is fixedly welded on the bottom of bracing frame 15.
When being tested, milliken conductor is held in milliken conductor resistance test fixture, according to tested milliken conductor
Sectional area select the corresponding conductor collar 30, and tested milliken conductor is clipped with measuring bridge；Under in the conductor collar 30
The collar 33 is placed in the lower indent 130 of lower lock block 13, and so that milliken conductor is contained in the low groove 330 of lower collar 33, and point
Cut conductor and stretch out about 5～10mm length；One end core of the ampere wires of applying is equably layered on the outer of tested milliken conductor
Surface, close the collar 31, and upper holder block 11 is sheathed on outside the upper collar 31；Check milliken conductor, the conductor collar 30, conductor compacting
Whether the laminating of 10 each several part of device is good, compresses the conductor collar 30 using hoisting apparatus 50 after confirmation；Connect test lead
And instrument, test item is i.e. measurable after placing 4 hours in stable environment.
Using this kind of milliken conductor resistance testing device, cable conductor resistivity measurement accuracy rate is greatly improved, reduce
Because the milliken conductor resistance test fixture problem data distortion for causing reason institute is tested and searched to repeating of thus bringing
The man-hour of consuming.Counting according to onsite application, 0.5 hour man-hour is expended using this milliken conductor resistance testing device, using biography
System milliken conductor resistance test fixture expends 3 hours man-hours, saves 2.5 hours man-hours.
The present invention is used cooperatively using milliken conductor resistance test accessory 100 and milliken conductor resistance test fixture, with ring
The mode that the shape conductor collar 30 presses replaces traditional rhombus to press pattern, it is ensured that during test, segmentation cross-sectional area of conductor shape will not become
Change, effectively prevent milliken conductor and scatter problem after insulating barrier is removed, ensured reliability and the accuracy of measurement result.Separately
On the one hand, while measurement result reliability is ensured, it is furnished with the various sizes of ring shaped conductor collar 30, disclosure satisfy that different cutting
The measurement demand of area milliken conductor, with stronger versatility.In addition, milliken conductor resistance test accessory 100 is easy to process,
Safe and reliable, with higher versatility and replicability.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
The restriction that therefore can not be interpreted as to the scope of the claims of the present invention.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformation can also be made and improved, these belong to the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (8)
1. a kind of milliken conductor resistance test accessory, it is characterised in that：Including conductor compacting device, the conductor collar and a refitting
Put, the conductor compacting device includes upper holder block and lower lock block, the conductor collar includes the collar and lower collar；Described trap
Ring is surrounded in the lower lock block, and the upper collar docks the clamping sky to be formed for clamping milliken conductor with the lower collar
Between, the upper holder block is surrounded on outside the upper collar and is docked with the lower lock block；The hoisting apparatus pressure is located at the upper pressure
On block.
2. milliken conductor resistance test accessory as claimed in claim 1, it is characterised in that：The upper collar and the lower collar
Two relative surfaces are recessed to form semicircular arc upper groove and semicircular arc low groove respectively, the upper groove and described recessed
Groove encloses to form the grasping part.
3. milliken conductor resistance test accessory as claimed in claim 2, it is characterised in that：The upper collar and the lower collar
Made by casting in bronze and form.
4. milliken conductor resistance test accessory as claimed in claim 2, it is characterised in that：The upper holder block and the lower lock block
Two relative surfaces are recessed respectively and are formed with semicircular arc indent under indent and semicircular arc, and the lower collar is contained in institute
State in lower indent, and the external annulus of the lower collar are fitted tightly with the internal groove side wall of the lower indent；The upper collar is contained in
In the upper indent, and the external annulus of the upper collar are fitted tightly with the internal groove side wall of the upper indent.
5. milliken conductor resistance test accessory as claimed in claim 4, it is characterised in that：The upper indent and the lower indent
Enclose to be formed for closely house the conductor collar and press space, the space and the grasping part of pressing is concentric
Circle.
6. milliken conductor resistance test accessory as claimed in claim 1, it is characterised in that：The hoisting apparatus is located at institute for pressure
State the hydraulic jack above upper holder block.
7. milliken conductor resistance test accessory as claimed in claim 1, it is characterised in that：The conductor compacting device includes to prop up
Support, the lower lock block is fixedly installed on support frame as described above, and the upper holder block is separably arranged at the upper of the lower lock block
Side.
8. a kind of milliken conductor resistance testing device, it is characterised in that：Including milliken conductor resistance test fixture and with described point
Cut the milliken conductor resistance test accessory that conductor resistance test fixture is used cooperatively, the milliken conductor resistance test accessory clamping
On the milliken conductor resistance on the outside of the milliken conductor resistance test fixture, which is described in any one of the claims 1-7
Milliken conductor resistance test accessory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094349.1A CN106443090A (en) | 2016-12-01 | 2016-12-01 | Segmental conductor resistance test auxiliary tool and test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094349.1A CN106443090A (en) | 2016-12-01 | 2016-12-01 | Segmental conductor resistance test auxiliary tool and test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106443090A true CN106443090A (en) | 2017-02-22 |
Family
ID=58222788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611094349.1A Pending CN106443090A (en) | 2016-12-01 | 2016-12-01 | Segmental conductor resistance test auxiliary tool and test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106443090A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627678A (en) * | 2018-06-27 | 2018-10-09 | 深圳供电局有限公司 | A kind of compound earthing material resistivity measurement fixture of graphite |
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| CN103123381A (en) * | 2012-12-31 | 2013-05-29 | 山东电力集团公司青岛供电公司 | Cable wire system for high voltage cable oscillation wave partial discharge detection system |
| CN203443980U (en) * | 2013-08-22 | 2014-02-19 | 杭州电缆股份有限公司 | DC resistance test bridge clamp of large-cross-section cable conductor |
| CN203562516U (en) * | 2013-11-25 | 2014-04-23 | 国家电网公司 | Conductor connecting clamp |
| US20140298916A1 (en) * | 2011-11-30 | 2014-10-09 | Zhejiang University | Stress monitoring device of elasto-magneto-electric (eme) effect type |
| CN104764908A (en) * | 2015-03-24 | 2015-07-08 | 广州南洋电缆有限公司 | Four-terminal measuring clamp |
| CN205015371U (en) * | 2015-09-30 | 2016-02-03 | 永进超高压电缆股份有限公司 | A electric bridge anchor clamps for measuring big cross -section milliken conductor resistance value |
| CN206223823U (en) * | 2016-12-01 | 2017-06-06 | 广州供电局有限公司 | Milliken conductor resistance test accessory and test device |
-
2016
- 2016-12-01 CN CN201611094349.1A patent/CN106443090A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140298916A1 (en) * | 2011-11-30 | 2014-10-09 | Zhejiang University | Stress monitoring device of elasto-magneto-electric (eme) effect type |
| CN103123381A (en) * | 2012-12-31 | 2013-05-29 | 山东电力集团公司青岛供电公司 | Cable wire system for high voltage cable oscillation wave partial discharge detection system |
| CN203443980U (en) * | 2013-08-22 | 2014-02-19 | 杭州电缆股份有限公司 | DC resistance test bridge clamp of large-cross-section cable conductor |
| CN203562516U (en) * | 2013-11-25 | 2014-04-23 | 国家电网公司 | Conductor connecting clamp |
| CN104764908A (en) * | 2015-03-24 | 2015-07-08 | 广州南洋电缆有限公司 | Four-terminal measuring clamp |
| CN205015371U (en) * | 2015-09-30 | 2016-02-03 | 永进超高压电缆股份有限公司 | A electric bridge anchor clamps for measuring big cross -section milliken conductor resistance value |
| CN206223823U (en) * | 2016-12-01 | 2017-06-06 | 广州供电局有限公司 | Milliken conductor resistance test accessory and test device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627678A (en) * | 2018-06-27 | 2018-10-09 | 深圳供电局有限公司 | A kind of compound earthing material resistivity measurement fixture of graphite |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200922 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant before: GUANGZHOU POWER SUPPLY Co.,Ltd. |