CN109579665A - Metal tape armour gap measuring method - Google Patents
Metal tape armour gap measuring method Download PDFInfo
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- CN109579665A CN109579665A CN201811579024.1A CN201811579024A CN109579665A CN 109579665 A CN109579665 A CN 109579665A CN 201811579024 A CN201811579024 A CN 201811579024A CN 109579665 A CN109579665 A CN 109579665A
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- Prior art keywords
- gap
- tape
- armouring
- value
- cable
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
Abstract
The embodiment of the invention provides a kind of metal tape armour gap measuring methods to choose one section to be detected for the armouring tape gap of detection cable on cable under test first, obtains n in one section to be detected1A armouring tape gap width X, and the maximum value X in the value of interrecord gap (IGP)maxWith minimum value Xmin, according to formula (Xmax‑Xmin)/XmaxGap fluctuations value M is obtained, judges whether M is greater than fluctuation acceptance value, if M is greater than fluctuation acceptance value, provides the wrapped underproof conclusion of armouring tape.If M is less than or equal to fluctuation acceptance value, n is obtained in detection section2A armouring tape width value Y, and calculate n1The average value X of a gap widthaveAnd n2The average value Y of a armouring tape width valueave, by comparing clearance rate Xave/YaveWhether the testing result in armature of cable gap, if less than 0.5 if armouring tape wrapped qualification are obtained less than 0.5.The present invention provides a kind of detection methods in the metal tape armour gap of cable.
Description
Technical field
The present invention relates to armature of cable clearance test fields, and in particular to a kind of metal tape armour gap measuring method.
Background technique
Detection method ununified about metal tape armour gap in industry at present, and the GB/ in national standard
But there is the specific requirement in metal tape armour gap in T12706-2008, armouring gap and the ratio of metal bandwidth are not more than
50%, but without armouring gap whether He Ge detection and judgment method.
The equal disunity of its detection method of testing agency authoritative in industry at present, it is a kind of to use vernier caliper random measurement,
Institute's measuring point is all qualified then to determine qualification；Another kind is 3 points of vernier caliper random inspection, is averaged, determines whether qualification,
Gimmick is measured and judged without specific.It is point contact with steel band, and measurement position and during vernier caliper measurement
Whether it is vertical with surveyed steel band be range estimation, there are larger measurement errors, be easy to cause erroneous judgement to actual measured results.And mesh
The disunity of preceding measurement method is easy to cause the situation that test result is inconsistent outside In-Plant Test and factory.
Summary of the invention
It is an object of that present invention to provide the methods in detection cable armouring tape gap, provide a kind of metal tape armour gap
Measurement method.
The embodiment of the invention provides a kind of metal tape armour gap measuring methods, between the armouring tape of detection cable
Gap, the cable include: cable core, armouring tape and oversheath；The armouring tape is around being wrapped in the outer layer of cable core, and around being wrapped in
The armouring tape of the outer layer of cable core exists around Inter-packet gap；The oversheath is coated on the outer layer of the armouring tape, feature
It is, comprising the following steps:
S1, detection section is chosen on cable under test；
S2, n is obtained in detection section1A armouring tape gap width, respectively X1, X2, X3…Xn1, wherein n1To be greater than or
Integer equal to 12；
S3, according to formula (Xmax-Xmin)/XmaxObtain the gap fluctuations value M of armouring tape, wherein XmaxFor n1A armouring
Maximum value in steel band gap width, XminFor n1Minimum value in a armouring tape gap width；
S4, judge whether the gap fluctuations value M of armouring tape is greater than fluctuation acceptance value；
S5, if it is not, then detection section in obtain n2A armouring tape width value, respectively Y1, Y2, Y3…Yn2, wherein n2For
Integer more than or equal to 6；
S6, according to formula Xave/YaveObtain the testing result in armature of cable gap, wherein XaveFor armouring tape gap
Average value, Xave=(X1+X2+X3+…Xn1)/n1, YaveFor armouring tape width average value, Yave=(Y1+Y2+Y3+…Yn2)/n2。
In a kind of feasible scheme, the fluctuation acceptance value is equal to 0.05.
In a kind of feasible scheme, in step s 2, specifically include:
S21, m is continuously acquired in detection section1Gap width between the armouring tape of a cable front is as armouring tape gap
Value；
S22, m is continuously acquired in detection section2Gap width between the armouring tape of a cable back side is as armouring tape gap
Value, and m1+m2=n1。
In a kind of feasible scheme, before step S1, further includes:
S01, a detection platform is provided；
S02, the both ends of the cable are fixed in detection platform, judge whether cable is straight；
S03, if so, strip the oversheath of the interlude of the cable, be exposed to armouring tape outer, and stripped outer
The length of the interlude of sheath is greater than or equal to the length of the detection section.
In a kind of feasible scheme, the detection platform includes: platform body, controller and N group laser transmitting-receiving device；
The controller and the N group laser transmitting-receiving device are electrically connected；
The both ends of the platform body are respectively set there are two placing groove, and described two placing grooves are located at same straight line
On, described two placing grooves are used to accommodate the both ends of cable under test；
The N group laser transmitting-receiving device is arranged on the platform body；
Laser transmitting-receiving device described in each group includes: laser generator and laser pickoff；
Each laser generator and each laser pickoff surround two placing groove arrangements respectively；
Laser pickoff in each group is used for when receiving the laser issued by corresponding laser generator, to the control
Device, which issues, receives signal；
The controller is used for when receiving N number of reception signal, obtains the straight result of cable.
In a kind of feasible scheme, the armouring tape is copper strips, aluminium strip or aluminum alloy strip.
In a kind of feasible scheme, in step s 2, n is obtained especially by straight angle measuring scale1A armouring tape gap
Value, and the width of two straight angles of the straight angle measuring scale is 2mm~3mm.
In a kind of feasible scheme, in step s 6, n is obtained especially by straight angle measuring scale2A armouring tape width
Value, and the width of two straight angles of the straight angle measuring scale is 2mm~3mm.
In a kind of feasible scheme, the length of the detection section is 30cm~110cm.
Based on above scheme it is found that the present invention provides a kind of metal tape armour gap measuring method, it to be used for detection cable
Armouring tape gap, one section to be detected is chosen on cable under test first, obtains n in one section to be detected1A armouring
Steel band gap width X, and the maximum value X in the value of interrecord gap (IGP)maxWith minimum value Xmin, according to formula (Xmax-Xmin)/XmaxBetween obtaining
Gap undulating value M, judges whether M is greater than fluctuation acceptance value, if M greater than fluctuation acceptance value, is provided, armouring tape is wrapped not to be conformed to
The conclusion of lattice.If M is less than or equal to fluctuation acceptance value, n is obtained in detection section2A armouring tape width value Y, and calculate n1It is a
The average value X of gap widthaveAnd n2The average value Y of a armouring tape width valueave, by comparing clearance rate Xave/YaveIt is whether small
The testing result that armature of cable armouring gap is obtained in 0.5, the wrapped qualification of armouring tape if less than 0.5.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow chart of the metal tape armour gap measuring method in the embodiment of the present invention one；
Fig. 2 is the schematic diagram of one section of cable to be detected in the embodiment of the present invention one；
Fig. 3 is the schematic diagram of the straight angle measuring scale in the embodiment of the present invention one.
Figure label:
1, cable core；2, armouring tape；3, oversheath；4, straight angle measuring scale；41, two straight angles；X1, armouring tape gap
Value；X2, armouring tape gap width；Y1, armouring tape width value；Y2, armouring tape width value.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
"front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " axial direction ", " radial direction ", " circumferential direction " etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, and be also possible to integral；It can be
Mechanical connection, is also possible to be electrically connected, is also possible to communication connection；It can be and be directly connected to, intermediary can also be passed through
It is indirectly connected with, can be the connection inside two elements or the interaction relationship of two elements, unless otherwise restricted clearly.
For the ordinary skill in the art, can understand as the case may be above-mentioned term in the present invention specifically contain
Justice.
Technical solution of the present invention is described in detail with specifically embodiment below.These specific implementations below
Example can be combined with each other, and the same or similar concept or process may be repeated no more in some embodiments.
Fig. 1 is the flow chart of the metal tape armour gap measuring method in the embodiment of the present invention one, and Fig. 2 is that the present invention is implemented
The schematic diagram of one section of cable to be detected in example one, as depicted in figs. 1 and 2, a kind of metal tape armour gap measuring method is used for
The armouring tape gap of detection cable, cable include: cable core 1, armouring tape 2 and oversheath 3, and armouring tape 2 is around being wrapped in cable core 1
Outer layer, and exist around the armouring tape 2 for being wrapped in 1 outer layer of cable core around Inter-packet gap, oversheath 3 is coated on the outer layer of armouring tape 2,
It is characterized in that, comprising the following steps:
S1, detection section is chosen on cable under test；
S2, n is obtained in detection section1A armouring tape gap width, respectively X1, X2, X3…Xn1, wherein n1To be greater than or
Integer equal to 12；
S3, according to formula (Xmax-Xmin)/XmaxObtain the gap fluctuations value M of armouring tape, wherein XmaxFor n1A armouring
Maximum value in steel band gap width, XminFor n1Minimum value in a armouring tape gap width；
S4, judge whether the gap fluctuations value M of armouring tape is greater than fluctuation acceptance value；
S5, if it is not, then detection section in obtain n2A armouring tape width value, respectively Y1, Y2, Y3…Yn2, wherein n2For
Integer more than or equal to 6；
S6, according to formula Xave/YaveObtain the testing result in armature of cable armouring gap, wherein XaveFor armouring tape
Gap average value, Xave=(X1+X2+X3+…Xn1)/n1, YaveFor armouring tape width average value, Yave=(Y1+Y2+Y3+…
Yn2)/n2。
Specifically, cable under test of the invention refers to the cable for being surrounded with metal steel strap, in the present embodiment, exist first
Detection section is chosen on cable under test, obtains 12 armoring tape gap widths, respectively X in detection section1, X2, X3, X4, X5, X6, X7,
X8, X9, X10, X11, X12.Take maximum value X thereinmaxAnd minimum value Xmin, according to formula (Xmax-Xmin)/XmaxCalculated gap wave
Dynamic value M, judges whether M is greater than fluctuation acceptance value, if more than the underproof conclusion of the wrapped metal steel strap of cable is then provided, if M is small
In or equal to fluctuation acceptance value, then 6 armoring tape width values, respectively Y are obtained in detection section1, Y2, Y3, Y4, Y5, Y6.It calculates
Armouring tape gap average value Xave, armouring tape width average value Yave, calculate armouring tape gap rate Xave/YaveIf armouring steel
Band gap ratio is greater than 0.5, then provides the underproof conclusion of the wrapped metal steel strap of cable, if armouring tape gap rate is less than or equal to 0.5,
Then provide the conclusion of the wrapped metal steel strap qualification of cable.
Through the above it is not difficult to find that the present invention provides a kind of metal tape armour gap measuring methods, for detecting
Armature of cable steel band gap chooses one section to be detected on cable under test first, obtains n in one section to be detected1It is a
Armouring tape gap width X, and the maximum value X in the value of interrecord gap (IGP)maxWith minimum value Xmin, according to formula (Xmax-Xmin)/Xmax?
To gap fluctuations value M, judge whether M is greater than fluctuation acceptance value, if M is greater than fluctuation acceptance value, it is wrapped to provide armouring tape
Underproof conclusion.If M is less than or equal to fluctuation acceptance value, n is obtained in detection section2A armouring tape width value Y, and calculate
n1The average value X of a gap widthaveAnd n2The average value Y of a armouring tape width valueave, by comparing clearance rate Xave/YaveIt is
The no testing result that armature of cable armouring gap is obtained less than 0.5, the wrapped qualification of armouring tape if less than 0.5.
Optionally, in the present embodiment, fluctuation acceptance value is equal to 0.05.0.05, Ke Yiman is set by fluctuation acceptance value
Cable after sufficient armouring tape has good tensile strength, good compression strength, also has good anti-interference ability.
Optionally, in the present embodiment, in step s 2, specifically include:
S21, m is continuously acquired in detection section1Gap width between the armouring tape of a cable front is as armouring tape gap
Value；
S22, m is continuously acquired in detection section2Gap width between the armouring tape of a cable back side is as armouring tape gap
Value, and m1+m2=n1。
In the present embodiment, m1It is 6, m2It is 6, a position is chosen in the detection section of cable, then from this position
Front continuously acquires 6 armouring tape gap widths, then continuously acquires 6 armouring tape gap widths from the back side of this position.
Using the method that this chooses measurement point, to avoid the randomness for choosing measurement point can avoid that actual testing result is caused to miss
Sentence.
Optionally, in the present embodiment, before step S1, further includes:
S01, a detection platform is provided；
S02, the both ends of cable are fixed in detection platform, judge whether cable is straight；
S03, if so, strip the oversheath of the interlude of cable, be exposed to armouring tape outer, and stripped oversheath
Interlude length be greater than or equal to detection section length.
In the present embodiment, it is provided with fixing groove in detection platform, a segment length is taken to be not less than the cable under test of 1.5m, it will
The both ends of cable under test are fixed in detection platform, check the appearance of cable, judge whether cable is straight, it is ensured that cable under test is flat
Directly without bending.If no bending that cable under test is straight, interlude is peeled off in place of the cable under test both ends apart from end 20cm
Oversheath is exposed to armouring tape outer, and ensures that cable under test armouring tape part is intact smooth without loose.
Optionally, in the present embodiment, detection platform includes: platform body, controller and N group laser transmitting-receiving device.Control
Device processed and N group laser transmitting-receiving device are electrically connected；The both ends of platform body are respectively set there are two placing groove, and two placing grooves
It is located along the same line, two placing grooves are used to accommodate the both ends of cable under test, and N group laser transmitting-receiving device is arranged in platform body
On.Each group laser transmitting-receiving device includes: laser generator and laser pickoff, and each laser generator and each laser pickoff are distinguished
It is arranged around two placing grooves, the laser pickoff in each group is for receiving the laser issued by corresponding laser generator
When, it is issued to controller and receives signal.Controller is used for when receiving N number of reception signal, obtains the straight result of cable.Pass through
The mode of laser transmitting-receiving detects the grazing of cable under test, avoids estimating, and causes to judge by accident to actually detected result.
Optionally, in the present embodiment, armouring tape 2 is copper strips, aluminium strip or aluminum alloy strip.
Optionally, in the present embodiment, in step s 2, such as Fig. 3, n is obtained especially by straight angle measuring scale 41A armouring
Steel band gap width, and the width of two straight angles 41 of straight angle measuring scale 4 is 2mm~3mm.In step s 6, especially by the straight angle
Measuring scale obtains n2A armouring tape width value, and the width of two straight angles of straight angle measuring scale is 2mm~3mm.
Currently, the testing agency in industry, using vernier caliper, vernier caliper is during measurement, with steel band
Point contact, and it is range estimation that whether measurement position is vertical with surveyed steel band, there are biggish measurement errors, tie to actual detection
Structure be easy to cause erroneous judgement.And in the present embodiment, using straight angle measuring scale 4 as shown in Figure 3, along wrapped direction, vertically
It is measured in steel band edge, two straight angles of straight angle measuring scale 4 are rectangular.In measurement process, two straight angles and steel band are real
Existing line face contact, and may insure that two straight angles are vertical with surveyed steel band.Guarantee the accuracy of measurement result.
Optionally, in the present embodiment, the length for detecting section is 30cm~110cm.Guarantee the length of certain detection section,
Ensure to obtain the representativeness of armouring tape gap width and armouring tape width value.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that fisrt feature and second feature directly contact or fisrt feature and second feature pass through intermediary mediate contact.
Moreover, fisrt feature can be fisrt feature in second feature above the second feature " above ", " above " and " above "
Directly above or obliquely above, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature is in second feature " it
Under ", " lower section " and " following " can be fisrt feature and be directly under or diagonally below the second feature, or be merely representative of fisrt feature water
Flat height is lower than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc., it is intended that specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or example of anticipating.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. a kind of metal tape armour gap measuring method, for the armouring tape gap of detection cable, the cable includes: cable
Core, armouring tape and oversheath；The armouring tape is around being wrapped in the outer layer of cable core, and around the armouring for being wrapped in the outer layer of cable core
Steel band exists around Inter-packet gap；The oversheath is coated on the outer layer of the armouring tape, which comprises the following steps:
S1, detection section is chosen on cable under test；
S2, n is obtained in detection section1A armouring tape gap width, respectively X1, X2, X3…Xn1, wherein n1For more than or equal to 12
Integer；
S3, according to formula (Xmax-Xmin)/XmaxObtain the gap fluctuations value M of armouring tape, wherein XmaxFor n1Between a armouring tape
Maximum value in gap value, XminFor n1Minimum value in a armouring tape gap width；
S4, judge whether the gap fluctuations value M of armouring tape is greater than fluctuation acceptance value；
S5, if it is not, then detection section in obtain n2A armouring tape width value, respectively Y1, Y2, Y3…Yn2, wherein n2For greater than
Or the integer equal to 6；
S6, according to formula Xave/YaveObtain the testing result in armature of cable gap, wherein XaveIt is average for armouring tape gap
Value, Xave=(X1+X2+X3+…Xn1)/n1, YaveFor armouring tape width average value, Yave=(Y1+Y2+Y3+…Yn2)/n2。
2. metal tape armour gap measuring method according to claim 1, which is characterized in that the fluctuation acceptance value is equal to
0.05。
3. metal tape armour gap measuring method according to claim 1, which is characterized in that in step s 2, specific to wrap
It includes:
S21, m is continuously acquired in detection section1Gap width between the armouring tape of a cable front is as armouring tape gap width；
S22, m is continuously acquired in detection section2Gap width between the armouring tape of a cable back side as armouring tape gap width, and
m1+m2=n1。
4. metal tape armour gap measuring method according to claim 1, which is characterized in that before step S1, also wrap
It includes:
S01, a detection platform is provided；
S02, the both ends of the cable are fixed in detection platform, judge whether cable is straight；
S03, if so, strip the oversheath of the interlude of the cable, be exposed to armouring tape outer, and stripped oversheath
Interlude length be greater than or equal to it is described detection section length.
5. metal tape armour gap measuring method according to claim 4, which is characterized in that the detection platform includes:
Platform body, controller and N group laser transmitting-receiving device；
The controller and the N group laser transmitting-receiving device are electrically connected；
The both ends of the platform body are respectively set there are two placing groove, and described two placing grooves are located along the same line, institute
Two placing grooves are stated for accommodating the both ends of cable under test；
The N group laser transmitting-receiving device is arranged on the platform body；
Laser transmitting-receiving device described in each group includes: laser generator and laser pickoff；
Each laser generator and each laser pickoff surround two placing groove arrangements respectively；
Laser pickoff in each group is used for when receiving the laser issued by corresponding laser generator, Xiang Suoshu controller hair
Signal is received out；
The controller is used for when receiving N number of reception signal, obtains the straight result of cable.
6. metal tape armour gap measuring method according to claim 1, which is characterized in that the armouring tape is copper
Band, aluminium strip or aluminum alloy strip.
7. metal tape armour gap measuring method according to claim 1, which is characterized in that in step s 2, specific logical
It crosses straight angle measuring scale and obtains n1A armouring tape gap width, and the width of two straight angles of the straight angle measuring scale be 2mm~
3mm。
8. metal tape armour gap measuring method according to claim 1, which is characterized in that in step s 6, specific logical
It crosses straight angle measuring scale and obtains n2A armouring tape width value, and the width of two straight angles of the straight angle measuring scale be 2mm~
3mm。
9. metal tape armour gap measuring method as claimed in any of claims 1 to 8, which is characterized in that described
The length for detecting section is 30cm~110cm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110986722A (en) * | 2019-12-25 | 2020-04-10 | 资阳中车电力机车有限公司 | Adjustment-free method for secondary transverse stopping gap |
| CN111189389A (en) * | 2020-01-08 | 2020-05-22 | 逸美德科技股份有限公司 | Method and device for detecting damage degree of ridge |
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