CN109298242A - A kind of direct current resistance m easurem ent device of cable - Google Patents
A kind of direct current resistance m easurem ent device of cable Download PDFInfo
- Publication number
- CN109298242A CN109298242A CN201811414521.6A CN201811414521A CN109298242A CN 109298242 A CN109298242 A CN 109298242A CN 201811414521 A CN201811414521 A CN 201811414521A CN 109298242 A CN109298242 A CN 109298242A
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- 238000005259 measurement Methods 0.000 claims abstract description 189
- 238000012360 testing method Methods 0.000 claims abstract description 29
- 239000012212 insulator Substances 0.000 claims description 33
- 230000008859 change Effects 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 239000004020 conductor Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- G01R27/08—Measuring resistance by measuring both voltage and current
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of direct current resistance m easurem ent devices of cable, belong to electric resistance measuring apparatus field, including DC test instrument, test desk, two current measurement fixtures and two voltage measurement fixtures, the both ends on test desk are arranged in described two current measurement fixtures, and be arranged about the center line mirror symmetry of test desk, described two voltage measurement fixtures are arranged between two current measurement fixtures.It can movement at any time by two voltage measurement fixtures of setting, the resistance of any end on cable is measured so as to move at any time, the resistance of measurement is directly displayed at DC test instrument simultaneously, so that the precision of measurement is more accurate, the resistance of cable can preferably be found out to be averaged by the measurement of the same section of multiple multistage of cable simultaneously, so that it is precisely higher, better meet the demand of measurement resistance.
Description
Technical field
The present invention relates to electric resistance measuring apparatus field more particularly to a kind of direct current resistance m easurem ent devices of cable.
Background technique
The test of wire and cable conductor wire core D.C. resistance accounts in wire and cable manufacture and its consequence, the survey
Examination is one of essential routine test of various types cable.And for reasonable utilization raw material, in wire and cable
Whether the cable core D.C. resistance that be also detected unit length in manufacturing process at any time meets standard requirements.Existing measurement
Method is broadly divided into bridge method and digital method two major classes, but no matter which kind of measurement method will be used by voltage fixture, electric current folder
Have four probe measurement technologies of composition.
Many studies have shown that lead resistance and various contact resistances are the main reason for causing measurement error, it is most typical just
Being different fixture leads to different measurement results.In solid conductor measurement, contact resistance mainly by fixture and tested cable it
Between contact generate；In stranded conductor measurement, contact resistance mainly includes the contact resistance of fixture and cable, is twisted in core respectively
Contact resistance between single line, and the latter account for it is leading.The twisted total contact resistance of core is larger, mainly due to each single wire surface oxygen
Change, and the resistivity of oxide layer is much larger than the resistivity of metallic conductor itself (aluminium oxide is especially serious).The size of contact resistance
Become with the property and thickness of oxide layer, it is also related with contact area and exposure level.The numerical value of contact resistance is between each single line
Unstable, change with clamped position and intensifying force.The resistance of big section twisted wire is most difficult to survey quasi-, the resistance of one side aluminium oxide
Rate is higher, and section is bigger, and single line radical is more, and total contact resistance between each single line is also bigger；Another aspect and small bore sample
It compares, the resistance of big cross-section samples itself is much smaller, in some instances it may even be possible to be in the same order of magnitude with contact resistance, at this time opposite
It influences obviously very big.
Summary of the invention
The purpose of the present invention is to provide a kind of direct current resistance m easurem ent devices of cable, solve the D.C. resistance of existing cable
The not accurate enough technical problem of the precision of measurement.
A kind of direct current resistance m easurem ent device of cable, including DC test instrument, test desk, two current measurement fixtures and two
The both ends on test desk, and the center line about test desk is arranged in a voltage measurement fixture, described two current measurement fixtures
Mirror symmetry setting, described two voltage measurement fixtures are arranged between two current measurement fixtures, described two current measurements
Fixture and two voltage measurement fixtures are connect with DC test instrument；Measurement table top, the measurement are provided on the test desk
Scale is provided on table top, the measurement table top both ends are provided with shifting chute, described two current measurement fixtures and two voltages
Measured material is stuck in shifting chute and is movably arranged.
Further, described two current measurement fixtures include current measurement fixture insulator foot, current measurement folder electricity
Cable hole, current measurement clamp block, clamp block clamp hand handle and mobile device, and the current measurement fixture insulator foot setting is being surveyed
It measures on table top, the current measurement clamp block is arranged on current measurement fixture insulator foot, and cable aperture is pressed from both sides in the current measurement
It is arranged on current measurement clamp block, the clamp block clamps the side that current measurement clamp block is arranged in hand handle, the movement
Device is arranged in current measurement fixture insulator foot bottom, and is fastened in shifting chute.
Further, the current measurement clamp block includes two pieces of fixture blocks, and two pieces of fixture block opposite sides are set as comb teeth
Structure, the comb structure of two pieces of fixture blocks engage setting, and the clamp block clamps hand handle and runs through two pieces by the tommy of setting
Fixture block.
Further, one piece in two pieces of fixture blocks is fixed on current measurement fixture insulator foot, and another piece can live
On dynamic setting current measurement fixture insulator foot, and hand handle moving in rotation is clamped with clamp block.
Further, the mobile device includes mobile front-wheel, chain, rotate gear and mobile rear-wheel, before the movement
Wheel and mobile rear-wheel are separately positioned on the front-end and back-end of current measurement fixture insulator foot bottom, and the rotate gear can be rotated
Setting in current measurement fixture insulator foot bottom, the mobile front-wheel, rotate gear and mobile rear-wheel are connected by chain.
Further, described two voltage measurement fixtures include voltage measurement fixture insulator foot, voltage measurement fixture
Plate, voltage measurement fixture are mobile to change hands handle and voltage measurement fixture mobile device, the voltage measurement fixture mobile device setting
In voltage measurement fixture insulator foot bottom, the voltage measurement fixture plate is arranged on voltage measurement fixture insulator foot, institute
It states and is provided with cable aperture on voltage measurement fixture plate, the voltage measurement fixture is mobile to be changed hands setting in voltage measurement fixture plate
Side and connect with voltage measurement fixture mobile device by gear.
Further, the invention also includes cable support seat, the cable support seat setting engages on measurement table top
It is movably arranged in shifting chute.
Further, the cable support seat is arranged between two voltage measurement fixtures, described two voltage measurement clamps
Tool includes support base bottom plate, support base vertical plate and support base insulating contacting plate, and the support base vertical plate is arranged in support base
On bottom plate, the support base insulating contacting plate is arranged on support base vertical plate, and the support base bottom plate, which is slidably arranged in, to be surveyed
It measures on table top.
Further, the bottom of the vertical height of the support base insulating contacting plate and current measurement folder cable aperture is to flat,
Cable aperture and current measurement folder cable aperture on described two voltage measurement fixtures is on the same horizontal line.
Present invention employs above-mentioned technical proposal, the present invention is had following technical effect that
The present invention by two voltage measurement fixtures of setting can movement at any time, so as to move at any time to cable
On the resistance of any end measure, while the resistance measured is directly displayed at DC test instrument, so that measurement
Precision is more accurate, while by the measurement of the same section of multiple multistage of cable, to be averaged, can preferably find out electricity
The resistance of cable, so that it is precisely higher, better meet the demand of measurement resistance.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is current fixture moving structure schematic diagram of the invention.
It is numbered in figure: 1- DC test instrument, 2- measurement table top, 3- scale, 4- current measurement fixture insulator foot, 5- electric current
Measurement folder cable aperture, 6- current measurement clamp block, 7- sandwich panel, 8- clamp block clamp hand handle, 9- voltage measurement fixture insulation bottom
Seat, 10- voltage measurement fixture plate, 11- voltage measurement fixture be mobile change hands handle, 12- support base bottom plate, 13- support base vertical plate,
The mobile front-wheel of 14- support base insulating contacting plate, 15- test desk, 16-, 17- chain, 18- rotate gear, the mobile rear-wheel of 19-.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, referring to the drawings and preferred reality is enumerated
Example is applied, the present invention is described in more detail.However, it is necessary to illustrate, many details listed in specification are only to be
Reader is set to have a thorough explanation to one or more aspects of the present invention, it can also be with even without these specific details
Realize the aspects of the invention.
As shown in Figure 1, a kind of direct current resistance m easurem ent apparatus structure schematic diagram of cable according to the present invention, including direct current are surveyed
Instrument 1,15, two current measurement fixtures of test desk and two voltage measurement fixtures are tried, described two current measurement fixture settings exist
Both ends on test desk 15, and be arranged about the center line mirror symmetry of test desk 15, described two voltage measurement fixture settings
Between two current measurement fixtures, described two current measurement fixtures and two voltage measurement fixtures with DC test instrument 1
Connection；It is provided with measurement table top 2 on the test desk 15, is provided with scale 3 on the measurement table top 2, described 2 liang of measurement table top
End is provided with shifting chute, and described two current measurement fixtures and two voltage measurement fixtures are stuck in move in shifting chute and set
It sets.
Energization processing is carried out by using two current measurement fixtures, then by two voltage measurement fixtures to energization
Cable carries out multistage traverse measurement, while the data of measurement are transmitted directly on DC test instrument 1, to show electricity automatically
Then the value of resistance finds out average resistance value by multistage measurement and repeatedly measurement.DC test instrument 1 uses model PC36's
DC test instrument.
In the embodiment of the present invention, described two current measurement fixtures include current measurement fixture insulator foot 4, electric current survey
Amount folder cable aperture 5, current measurement clamp block 6, clamp block clamp hand handle 8 and mobile device, current measurement fixture insulation bottom
4 setting of seat is on measurement table top 2, and the current measurement clamp block 6 is arranged on current measurement fixture insulator foot 4, the electricity
Flow measurement presss from both sides cable aperture 5 and is arranged on current measurement clamp block 6, and the clamp block clamps hand handle 8 and is arranged in current measurement fixture
The side of block 6, the mobile device is arranged in 4 bottom of current measurement fixture insulator foot, and is fastened in shifting chute.The electricity
Flow measurement clamp block 6 includes two pieces of fixture blocks, and two pieces of fixture block opposite sides are set as comb structure, the comb structure of two pieces of fixture blocks
Engaging setting, the clamp block clamp hand handle 8 and run through two pieces of fixture blocks by the tommy of setting.One in two pieces of fixture blocks
Block is fixed on current measurement fixture insulator foot 4, on another piece of movable setting current measurement fixture insulator foot 4, and with
Clamp block clamps 8 moving in rotation of hand handle.
Two current measurement fixtures are mainly used for clamping cables, while cable is straightened, and pass through current measurement fixture
Block 6 clamps cable, then passes to electric current and realizes that the electric current of measurement is passed through.
In the embodiment of the present invention, the mobile device includes mobile front-wheel 16, chain 17, rotate gear 18 and mobile rear-wheel
19, the mobile front-wheel 16 is separately positioned on the front-end and back-end of 4 bottom of current measurement fixture insulator foot with mobile rear-wheel 19,
The rotate gear 18 is spindle rotationally arranged in 4 bottom of current measurement fixture insulator foot, the mobile front-wheel 16, rotate gear
18 are connected with mobile rear-wheel 19 by chain 17.Mobile device is mainly used for that two current measurement fixtures is driven to be moved,
It is convenient that different cable lengths is measured.One mobile hand handle, mobile hand handle and voltage measurement are set outside mobile device
Fixture is mobile change hands 11 structure it is identical.Rotate hand handle, drives mobile device to be further driven to electric current by rotate gear 18
Measured material is mobile.
Described two voltage measurement fixtures include voltage measurement fixture insulator foot 9, voltage measurement fixture plate 10, voltage
Measured material is mobile to change hands 11 and voltage measurement fixture mobile device, and the voltage measurement fixture mobile device is arranged in voltage
9 bottom of measured material insulator foot, the voltage measurement fixture plate 10 is arranged on voltage measurement fixture insulator foot 9, described
Cable aperture is provided on voltage measurement fixture plate 10, mobile change hands of the voltage measurement fixture is arranged 11 in voltage measurement fixture
The side of plate 10 is simultaneously connect with voltage measurement fixture mobile device by gear.The mutual movement of two voltage measurement fixtures, from
And it completes then to be averaged the measurement of the multiple different sections of same cable.
It further include cable support seat in the embodiment of the present invention, the cable support seat setting blocks on measurement table top 2
Conjunction is movably arranged in shifting chute.The cable support seat is arranged between two voltage measurement fixtures, and described two voltages are surveyed
Measuring fixture includes support base bottom plate 12, support base vertical plate 13 and support base insulating contacting plate 14, the support base vertical plate 13
It is arranged on support base bottom plate 12, the support base insulating contacting plate 14 is arranged on support base vertical plate 13, the support base
Bottom plate 12 is slidably arranged on measurement table top 2.Electricity is pressed from both sides in vertical height and the current measurement of the support base insulating contacting plate 14
The bottom in cable hole 5 is to putting down, and the cable aperture and current measurement folder cable aperture 5 on described two voltage measurement fixtures are in the same level
On line.
Cable support seat mainly plays the role of support, prevents cable due to gravity so that intermediate toward sagging,
So that the precision inaccuracy of measurement.
After measuring resistance, the specific length of cable is then registered out by scale 3, then calculates the electricity of cable
Resistance rate.
Working principle:
Cable is pressed from both sides cable aperture 5 and electricity by the current measurement on two current measurement fixtures and two voltage measurement fixtures
Cable hole, then by the way that DC test instrument 1 is connected two current measurement fixtures and two voltage measurement fixtures, then toward two electricity
It is powered on flow measurement fixture, reads the resistance value of DC test instrument 1, while registering out two direct cables of voltage measurement fixture
Length, similarly move two voltage measurement fixtures make measurement cable length change, position change, repeatedly measure, so
After converse resistivity, plot mean after rent, the data measured.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of direct current resistance m easurem ent device of cable, including DC test instrument (1), test desk (15), two current measurement folders
Tool and two voltage measurement fixtures, the both ends that described two current measurement fixtures are arranged on test desk (15), and about measurement
The center line mirror symmetry of platform (15) is arranged, and described two voltage measurement fixtures are arranged between two current measurement fixtures,
Be characterized in that: described two current measurement fixtures and two voltage measurement fixtures are connect with DC test instrument (1)；The measurement
It is provided with measurement table top (2) on platform (15), is provided with scale (3) on the measurement table top (2), measurement table top (2) both ends
It is provided with shifting chute, described two current measurement fixtures and two voltage measurement fixtures are stuck in shifting chute and are movably arranged.
2. a kind of direct current resistance m easurem ent device of cable according to claim 1, it is characterised in that: described two electric currents are surveyed
Amount fixture includes current measurement fixture insulator foot (4), current measurement folder cable aperture (5), current measurement clamp block (6), folder
Have block and clamp hand handle (8) and mobile device, current measurement fixture insulator foot (4) setting is described in measurement table top (2)
Current measurement clamp block (6) is arranged on current measurement fixture insulator foot (4), current measurement folder cable aperture (5) setting
On current measurement clamp block (6), the clamp block clamps hand handle (8) setting in the side of current measurement clamp block (6), described
Mobile device is arranged in current measurement fixture insulator foot (4) bottom, and is fastened in shifting chute.
3. a kind of direct current resistance m easurem ent device of cable according to claim 2, it is characterised in that: the current measurement folder
Having block (6) includes two pieces of fixture blocks, and two pieces of fixture block opposite sides are set as comb structure, and the comb structure engaging of two pieces of fixture blocks is set
It sets, the clamp block clamps hand handle (8) and runs through two pieces of fixture blocks by the tommy of setting.
4. a kind of direct current resistance m easurem ent device of cable according to claim 3, it is characterised in that: in two pieces of fixture blocks
One piece be fixed on current measurement fixture insulator foot (4), another piece of movable setting current measurement fixture insulator foot (4)
On, and hand handle (8) moving in rotation is clamped with clamp block.
5. a kind of direct current resistance m easurem ent device of cable according to claim 2, it is characterised in that: the mobile device packet
Include mobile front-wheel (16), chain (17), rotate gear (18) and mobile rear-wheel (19), the mobile front-wheel (16) and mobile rear-wheel
(19) front-end and back-end of current measurement fixture insulator foot (4) bottom are separately positioned on, the rotate gear (18) can be rotated
Setting in current measurement fixture insulator foot (4) bottom, the mobile front-wheel (16), rotate gear (18) and mobile rear-wheel
(19) it is connected by chain (17).
6. a kind of direct current resistance m easurem ent device of cable according to claim 1, it is characterised in that: described two voltages are surveyed
Amount fixture include voltage measurement fixture insulator foot (9), voltage measurement fixture plate (10), voltage measurement fixture movement change hands handle
(11) it is arranged with voltage measurement fixture mobile device, the voltage measurement fixture mobile device in voltage measurement fixture insulator foot
(9) bottom, the voltage measurement fixture plate (10) are arranged on voltage measurement fixture insulator foot (9), the voltage measurement clamp
Cable aperture is provided on tool plate (10), mobile change hands of the voltage measurement fixture is arranged (11) in voltage measurement fixture plate (10)
Side and connect with voltage measurement fixture mobile device by gear.
7. a kind of direct current resistance m easurem ent device of cable according to claim 1, it is characterised in that: further include cable support
Seat, the cable support seat setting are fastened on shifting chute and are movably arranged in measurement table top (2).
8. a kind of direct current resistance m easurem ent device of cable according to claim 7, it is characterised in that: the cable support seat
It is arranged between two voltage measurement fixtures, described two voltage measurement fixtures include that support base bottom plate (12), support base are vertical
Plate (13) and support base insulating contacting plate (14), the support base vertical plate (13) is arranged on support base bottom plate (12), described
Support base insulating contacting plate (14) is arranged on support base vertical plate (13), and the support base bottom plate (12), which is slidably arranged in, surveys
It measures on table top (2).
9. a kind of direct current resistance m easurem ent device of cable according to claim 8, it is characterised in that: the support base insulation
The bottom of the vertical height of contact plate (14) and current measurement folder cable aperture (5) is to flat, on described two voltage measurement fixtures
Cable aperture and current measurement folder cable aperture (5) are on the same horizontal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811414521.6A CN109298242A (en) | 2018-11-26 | 2018-11-26 | A kind of direct current resistance m easurem ent device of cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811414521.6A CN109298242A (en) | 2018-11-26 | 2018-11-26 | A kind of direct current resistance m easurem ent device of cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109298242A true CN109298242A (en) | 2019-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811414521.6A Pending CN109298242A (en) | 2018-11-26 | 2018-11-26 | A kind of direct current resistance m easurem ent device of cable |
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| CN (1) | CN109298242A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146767A (en) * | 2019-04-23 | 2019-08-20 | 江苏维尔兰电缆有限公司 | It is a kind of for detecting the device of charge bearing detecting cable electric conductivity |
| CN110187243A (en) * | 2019-04-23 | 2019-08-30 | 江苏维尔兰电缆有限公司 | A kind of detection device for insulation performance in charge bearing detecting cable production process |
| CN110244126A (en) * | 2019-06-14 | 2019-09-17 | 牡丹江市质量技术监督检验检测中心 | Grating scale numerical control accurately measures conductor resistance value device |
| CN111239443A (en) * | 2020-02-24 | 2020-06-05 | 国网天津市电力公司电力科学研究院 | Clamp for detecting direct current resistance of distribution network cable |
| CN114740053A (en) * | 2022-03-31 | 2022-07-12 | 河南四方达超硬材料股份有限公司 | Heating tube sorting method for diamond synthesis and heating tube resistance measuring method |
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| CN209215486U (en) * | 2018-11-26 | 2019-08-06 | 广西广缆科技集团有限公司 | A kind of direct current resistance m easurem ent device of cable |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146767A (en) * | 2019-04-23 | 2019-08-20 | 江苏维尔兰电缆有限公司 | It is a kind of for detecting the device of charge bearing detecting cable electric conductivity |
| CN110187243A (en) * | 2019-04-23 | 2019-08-30 | 江苏维尔兰电缆有限公司 | A kind of detection device for insulation performance in charge bearing detecting cable production process |
| CN110187243B (en) * | 2019-04-23 | 2021-05-28 | 江苏新华能电缆有限公司 | Detection device for insulation performance in load-bearing detection cable production process |
| CN110244126A (en) * | 2019-06-14 | 2019-09-17 | 牡丹江市质量技术监督检验检测中心 | Grating scale numerical control accurately measures conductor resistance value device |
| CN111239443A (en) * | 2020-02-24 | 2020-06-05 | 国网天津市电力公司电力科学研究院 | Clamp for detecting direct current resistance of distribution network cable |
| CN114740053A (en) * | 2022-03-31 | 2022-07-12 | 河南四方达超硬材料股份有限公司 | Heating tube sorting method for diamond synthesis and heating tube resistance measuring method |
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