CN116047034B - Water-blocking yarn on-line detection method and system - Google Patents
Water-blocking yarn on-line detection method and system Download PDFInfo
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- CN116047034B CN116047034B CN202211630561.0A CN202211630561A CN116047034B CN 116047034 B CN116047034 B CN 116047034B CN 202211630561 A CN202211630561 A CN 202211630561A CN 116047034 B CN116047034 B CN 116047034B
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- 238000001514 detection method Methods 0.000 title claims abstract description 88
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 124
- 239000000843 powder Substances 0.000 claims abstract description 112
- 239000002245 particle Substances 0.000 claims abstract description 46
- 238000004804 winding Methods 0.000 claims abstract description 35
- 238000010521 absorption reaction Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 25
- 230000000903 blocking effect Effects 0.000 claims description 87
- 238000009826 distribution Methods 0.000 claims description 10
- 239000005871 repellent Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 15
- 239000000523 sample Substances 0.000 abstract description 14
- 238000000576 coating method Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 16
- 230000006872 improvement Effects 0.000 description 10
- 230000003014 reinforcing effect Effects 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/36—Textiles
- G01N33/365—Filiform textiles, e.g. yarns
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
- G01N15/0227—Investigating particle size or size distribution by optical means using imaging; using holography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/10—Investigating individual particles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
- G01N5/025—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content for determining moisture content
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- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Engineering & Computer Science (AREA)
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- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The application discloses a water-blocking yarn on-line detection method and a system, which belong to the technical field of optical cable detection, and comprise a detection probe arranged on a yarn outlet device, wherein a detection port of the detection probe is arranged towards a yarn winding shuttle of the yarn outlet device, and the detection probe is used for detecting the rotation condition of the wound yarn shuttle; and the camera component is arranged over against the surface of the water-blocking yarn and is used for shooting the particle size and the quantity of the water-blocking powder on the surface of the water-blocking yarn. The method comprises the steps of firstly judging whether the water-blocking yarn has a yarn breakage problem through a detection probe, detecting the quantity and granularity of water-blocking powder on the surface of the water-blocking yarn in the continuous coating process of the water-blocking yarn, calculating the total quality of the water-blocking powder according to the quantity and granularity of the water-blocking powder to obtain the actual water absorption capacity of the water-blocking yarn, and comparing the water absorption capacity of the water-blocking yarn obtained in real time with the water absorption standard of the water-blocking yarn to judge whether the actual water absorption capacity of the water-blocking yarn meets the water absorption standard in the winding process so as to ensure the water-blocking performance of the optical cable.
Description
Technical Field
The invention belongs to the technical field of optical cable detection, and particularly relates to a water blocking yarn on-line detection method and system.
Background
The dry structure cable has the advantage of cleanness and easy construction compared with the cable with the oil filling structure. In the production process of the dry optical cable, the periphery of the reinforcing core is usually drawn to the periphery of the reinforcing core by using a passive paying-off type, and the water blocking yarn is wound on the sleeve and the reinforcing core through sleeve rotation and drawing, so that water blocking between the reinforcing core and the sleeve is realized.
With the continuous competition of the optical cable market, the light weight is one of the development directions of optical cable raw materials. On the premise of meeting the water seepage performance, the linear density of the water blocking yarn is gradually reduced from 0.5kg/km to 0.33kg/km and 0.2kg/km. This results in a decrease in breaking strength, elongation at break, etc. of the water blocking yarn, and a significant increase in the frequency of failure of the water blocking yarn during the production process. In general, the water blocking capability, elongation at break and the like of the water blocking yarn are tested in the production stage, and in the actual yarn binding process, the breakage of the water blocking yarn or the loss of the water blocking powder content on the surface of the water blocking yarn belong to uncontrollable conditions, so that the water blocking yarn is directly broken or the water blocking performance is poor when an optical cable is prepared.
Disclosure of Invention
In response to one or more of the above-mentioned drawbacks or improvements of the prior art, the present invention provides an on-line detection method for water blocking yarn, which is used for detecting the water blocking capability of the water blocking yarn in real time in the existing optical cable production process.
In order to achieve the above purpose, the invention provides an on-line detection method of water blocking yarn, which comprises the following steps:
s1, taking an image of the surface of a water-blocking yarn to obtain a detection unit;
S2, acquiring the quantity and the particle size of the water-repellent powder particles in the detection unit;
S3, acquiring the total mass of the water-blocking powder according to the particle size and the particle number of the water-blocking powder, and calculating to obtain the theoretical water absorption weight of the water-blocking powder;
s4, obtaining the yarn weight of the water-blocking yarn, and calculating to obtain the total weight of the water-blocking yarn;
S5, acquiring the water-absorbing expansion rate of the water-blocking yarn according to the theoretical water-absorbing weight of the water-blocking powder and the total weight of the water-blocking yarn;
S6, comparing the water-absorbing expansion rate of the water-blocking yarn with the standard water-absorbing expansion rate of the water-blocking yarn, and judging whether the water-blocking capacity of the water-blocking yarn is qualified;
the yarn detecting device comprises a yarn detecting unit, a yarn detecting unit and a yarn detecting unit, wherein the detecting unit is positioned between a yarn outlet of the yarn detecting device and the surface of the light unit.
As a further improvement of the present invention, step S2 specifically includes:
Dividing the water-blocking powder particle size distribution into five sections of 0.24+/-0.02 mm, 0.2+/-0.02 mm, 0.16+/-0.02 mm, 0.12+/-0.02 mm and 0.08-0.10;
respectively acquiring the water blocking powder quantity of the detection unit in five granularity distribution intervals;
obtaining the ratio of the water-blocking powder quantity with the particle size of 0.1-0.18 mm to the total water-blocking powder quantity;
s3, when the water-blocking powder with the particle size of 0.1-0.18 mm accounts for not less than 0.4;
when the water blocking powder with the particle size of 0.1-0.18 mm accounts for less than 0.4, the water blocking capability of the water blocking yarn is unqualified.
As a further improvement of the invention, the theoretical water absorption weight of the water-blocking powder in the step S3 is calculated according to the total weight of the water-blocking powder and the water absorption rate of the water-blocking powder.
As a further improvement of the invention, in the step S1, a plurality of detection units are arranged at different positions of the water-blocking yarns, and when the water-blocking yarn water-absorbing expansion rate of the detection units is larger than the standard water-absorbing expansion rate of the water-blocking yarns, the water-blocking capacity of the water-blocking yarns is qualified.
As a further improvement of the present invention, the water-absorbing power of the water-blocking powder in step S3 is 150.
As a further improvement of the present invention, the standard water-absorbing expansion ratio of the water-blocking yarn in step S6 is determined according to the specification of the water-blocking yarn, wherein the standard water-absorbing expansion ratio of the water-blocking yarn ZS-2.0 is 65, the standard water-absorbing expansion ratio of the water-blocking yarn ZS-3.0 is 70, and the standard water-absorbing expansion ratio of the water-blocking yarn ZS-5.0 is 80.
As a further improvement of the present invention, step S1 is preceded by:
Detecting the yarn breakage condition of the water-blocking yarn: detecting the rotation frequency of a yarn winding shuttle of the yarn winding device, and turning the step S1, wherein when the yarn winding shuttle rotates, the water-blocking yarn is not broken; when the yarn winding shuttle stops rotating, the water blocking yarn breaks, and the water blocking capability of the water blocking yarn is disqualified.
The application also comprises an on-line detection system for water blocking yarn, which is used for detecting the water blocking capability of the water blocking yarn led out from the yarn outlet device, and comprises the following steps:
The detection probe is arranged on the yarn outlet device, a detection opening of the detection probe is arranged towards the yarn winding shuttle of the yarn outlet device, and the detection probe is used for detecting the rotation condition of the yarn winding shuttle;
And the camera component is arranged opposite to the surface of the water-blocking yarn and is used for shooting the particle size and the quantity of the water-blocking powder on the surface of the water-blocking yarn.
As a further improvement of the present invention, the camera assembly is plural, and the plural camera assemblies are arranged circumferentially along the water blocking yarn.
As a further improvement of the invention, the detection probe is also connected with an alarm device.
The above-mentioned improved technical features can be combined with each other as long as they do not collide with each other.
In general, the above technical solutions conceived by the present invention have the beneficial effects compared with the prior art including:
(1) According to the online detection method for the water-blocking yarn, the actual water-blocking capacity of the water-blocking yarn is calculated by shooting the distribution condition of water-blocking powder particles on the surface of the water-blocking yarn in the winding process of the water-blocking yarn, the water-blocking yarn is detected by the water-blocking yarn led out from the yarn outlet of the yarn outlet device, a part of water-blocking powder is scraped off by the yarn outlet on the surface of the water-blocking yarn, the water-blocking yarn actually wound on the surface of an optical unit of an optical cable is attributed to the water-blocking yarn, the water-absorbing capacity of the detected water-blocking yarn can represent the actual water-blocking capacity of the optical cable, the problem that the produced water-blocking capacity of the water-blocking yarn is qualified, and the water-blocking capacity of the optical cable actually prepared is unqualified is avoided, and the water-blocking quality of the optical cable is ensured.
(2) According to the online detection method for the water-blocking yarn, the actual water-blocking powder condition on the surface of the water-blocking yarn is obtained, the actual water-absorbing capacity of the water-blocking yarn in a unit area is obtained through calculation, the water-absorbing capacity of the water-blocking yarn in the actual water-absorbing process is obtained, the water-absorbing capacity of the water-blocking yarn in the production stage is not obtained, the water-blocking capacity of the water-blocking yarn after the optical cable is cabled is not obtained, the limitation of the winding process or the production process of the water-blocking yarn is avoided, the actual water-absorbing condition of the optical cable can be represented to the greatest extent, and the method can be used as an optimal judgment mode for judging whether the water-blocking standard is met after the optical cable is cabled.
(3) According to the online detection system for the water-blocking yarn, provided by the invention, the detection probe is arranged, the rotation condition of the yarn winding shuttle is perceived by the detection probe, so that the yarn outlet condition of the water-blocking yarn can be intuitively and clearly obtained, a producer is not required to watch a cable production line at any time, and the labor cost is reduced; and can inform production personnel through alarm device etc. fast, avoid the continuous cladding failure's of yarn that blocks water under the broken yarn condition problem, guarantee production efficiency.
Drawings
Fig. 1 is a schematic flow chart of an on-line detection method of water blocking yarn in an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Referring to fig. 1, the present application includes an on-line detection method for water blocking yarn, which includes the following steps:
s1, taking an image of the surface of a water-blocking yarn to obtain a detection unit;
S2, acquiring the quantity and the particle size of the water-repellent powder particles in the detection unit;
S3, acquiring the total mass of the water-blocking powder according to the particle size and the particle number of the water-blocking powder, and calculating to obtain the theoretical water absorption weight of the water-blocking powder;
s4, obtaining the yarn weight of the water-blocking yarn, and calculating to obtain the total weight of the water-blocking yarn;
S5, acquiring the water-absorbing expansion rate of the water-blocking yarn according to the theoretical water-absorbing weight of the water-blocking powder and the total weight of the water-blocking yarn;
S6, comparing the water-absorbing expansion rate of the water-blocking yarn with the standard water-absorbing expansion rate of the water-blocking yarn, and judging whether the water-blocking capacity of the water-blocking yarn is qualified;
the yarn detecting device comprises a yarn detecting unit, a yarn detecting unit and a yarn detecting unit, wherein the detecting unit is positioned between a yarn outlet of the yarn detecting device and the surface of the light unit.
The on-line detection method of the water blocking yarn is mainly used for detecting the water blocking condition of the water blocking yarn between the yarn outlet of the yarn device and the surface of the light unit. When the yarn outlet device is used for yarn outlet, the surface of the water-blocking yarn can be contacted with the surface of the yarn outlet, so that the water-blocking yarn is rubbed with the yarn outlet, water-blocking powder attached to the surface of the water-blocking yarn is lost, and the water-blocking performance of the water-blocking yarn is further affected. After the water-blocking yarn passes through the yarn outlet, the water-blocking yarn is directly wound on the surface of the twisted structure of the light unit and the reinforcing core, and finally the outer jacket is extruded on the periphery of the water-blocking yarn, so that the water-blocking powder loss on the surface of the water-blocking yarn is relatively less in the process after the water-blocking yarn is wound on the surface of the light unit. Therefore, the water blocking capability of the water blocking yarn between the yarn outlet of the yarn outlet device and the surface of the light unit can represent the actual water blocking capability of the cable.
Based on the method, the on-line detection method of the water-blocking yarn is provided, the water-blocking yarn surface is imaged, the particle size and the number of the water-blocking powder in the detection unit area are taken, the water absorption content of the water-blocking powder is obtained, the water-blocking yarn water absorption expansion rate is further obtained, and then the water-blocking capacity of the water-blocking yarn can be judged whether to be qualified or not by comparing the water-blocking yarn water absorption expansion rate with the standard water-blocking yarn water absorption expansion rate.
Further, as a preferred embodiment of the present application, step S2 of the present application specifically includes:
Dividing the water-blocking powder particle size distribution into five sections of 0.24+/-0.02 mm, 0.2+/-0.02 mm, 0.16+/-0.02 mm, 0.12+/-0.02 mm and 0.08-0.10;
respectively acquiring the water blocking powder quantity of the detection unit in five granularity distribution intervals;
obtaining the ratio of the water-blocking powder quantity with the particle size of 0.1-0.18 mm to the total water-blocking powder quantity;
s3, when the water-blocking powder with the particle size of 0.1-0.18 mm accounts for not less than 0.4;
when the water blocking powder with the particle size of 0.1-0.18 mm accounts for less than 0.4, the water blocking capability of the water blocking yarn is unqualified.
In general, the water-blocking yarn is composed of yarn, water-blocking powder and adhesive, the water-blocking powder is the water-blocking base of the water-blocking yarn, the yarn is a carrier, and the adhesive is used for bonding the yarn and the water-blocking powder. The water-blocking powder is usually uniform in material selection, and the water-absorbing capacity of the water-blocking yarn in unit length depends on the quantity and the size of the water-blocking powder in the area. In order to facilitate effective adhesion of the water-blocking powder, the water-blocking powder is usually screened, and in the preparation standard, the number of the water-blocking powder with the diameter of more than 0.24 is not higher than 5% or more of the total water-blocking powder, and the number of the water-blocking powder with the diameter of less than 0.08 is not higher than 30% or more of the total water-blocking powder, so that the overall water-blocking capability of the water-blocking yarn is ensured. The water-blocking powder is screened by a sieve, so that the particle size of the water-blocking powder is in a proper range. The water-blocking powder particle size distribution represents the water-absorbing capacity of the water-blocking yarn due to the limited surface area of the water-blocking yarn.
The water-blocking powder with the particle size of 0.1-0.18 mm generally has better adhesive capability, when the particle size is larger than 0.18mm, the water-blocking yarn is easy to lose in the process of carrying or rubbing with the yarn outlet, and when the particle size is smaller than 0.1mm, the water-blocking powder is easy to separate in the process of traction and winding of the water-blocking yarn. Therefore, the water-blocking powder content with the particle size of 0.1-0.18 needs to be strictly controlled, and when the water-blocking powder content with the particle size is more than 0.4, the water-blocking capability of the water-blocking yarn is excellent; when the water-blocking powder content is less than 0.4, the water-blocking powder can be lost in the subsequent process, so that the water-blocking capability is unqualified.
Further, as a preferred embodiment of the present application, the theoretical water absorption weight of the water-blocking powder in step S3 of the present application is calculated according to the total weight of the water-blocking powder and the water absorption rate of the water-blocking powder. Specifically, the theoretical water absorption weight of the water-blocking powder is the product of the actual weight of the water-blocking powder and the water absorption multiplying power of the water-blocking powder. Preferably, the water absorption ratio of the water-blocking powder is 150, namely, 1g of the water-blocking powder can reach 150g at maximum after absorbing water, which is the limit water absorption capacity of the water-blocking powder.
Further, as a preferred embodiment of the present application, the standard water-swelling capacity of the water-blocking yarn in step S6 of the present application is determined according to the specification of the water-blocking yarn. The water-blocking yarns of several common specifications have the following water-absorbing expansion rates: the standard water absorption expansion ratio of the water blocking yarn ZS-2.0 is 65, the standard water absorption expansion ratio of the water blocking yarn ZS-3.0 is 70, and the standard water absorption expansion ratio of the water blocking yarn ZS-5.0 is 80. And when judging the actual water blocking capacity of the water blocking yarns, judging according to the standard water absorption expansion rate of different water blocking yarns.
Further, as a preferred embodiment of the present application, the step S1 of the present application further includes detecting a yarn breakage condition of the water blocking yarn: detecting the rotation frequency of a yarn winding shuttle of the yarn winding device, and turning the step S1, wherein when the yarn winding shuttle rotates, the water-blocking yarn is not broken; when the yarn winding shuttle stops rotating, the water blocking yarn breaks, and the water blocking capability of the water blocking yarn is disqualified. When the water blocking capability of the water blocking yarn is detected, the primary guarantee condition is that the water blocking yarn is not broken, and when the water blocking yarn is broken, no water blocking yarn passes between the yarn outlet of the yarn outlet device and the surface of the optical unit, so that continuous output of the yarn is guaranteed preferentially. And the yarn outlet device can continuously drive the yarn winding shuttle to rotate in the yarn outlet process. The rotation of the yarn winding shuttle represents continuous winding and leading-out of the water blocking yarn, and the non-rotation of the yarn winding shuttle represents disconnection of the water blocking yarn.
Further, as an optional embodiment of the present application, the step S1 of the present application further includes detecting a yarn breakage condition of the water blocking yarn: detecting the rotation frequency of a yarn winding shuttle of the yarn device, and when the detected rotation frequency of the yarn winding shuttle is equal to the set frequency of the yarn winding shuttle, normally discharging the water-blocking yarn, and turning to the step S1; when the rotation frequency of the yarn winding shuttle is detected to be larger than or smaller than the set frequency of the yarn winding shuttle, the yarn winding fault of the water-blocking yarn is caused, and the water-blocking capability of the water-blocking yarn is not qualified. In the actual yarn-out process of the water-blocking yarn, yarn breakage belongs to the extreme condition in the production process, and when the water-blocking yarn is wound into a lump, the yarn-out frequency of the water-blocking yarn is not uniform, so that the yarn breakage problem is very easy to cause. Therefore, when the rotation frequency of the yarn winding shuttle changes, the water blocking yarn winding faults are proved, the probability of yarn breakage in the follow-up process is high, the production line is stopped, and production personnel are arranged to overhaul and check as soon as possible.
Further, as a preferred embodiment of the present application, in step S1, the number of the detection units is plural, and the plurality of detection units are located at different positions of the water blocking yarn, and when the water blocking yarn water absorption expansion ratio of the plurality of detection units is larger than the standard water absorption expansion ratio of the water blocking yarn, the water blocking capability of the water blocking yarn is qualified. When the quantity and the particle size of the water-blocking powder at the detection unit are detected, the particle size of the water-blocking powder is in the micron level to the millimeter level, and the actual production distance of the optical cable is usually tens of kilometers, so that the water-blocking yarn cannot be detected in the whole process. The online detection method of the water-blocking yarn is a sampling detection mode, namely intermittent sampling is carried out on the surface of the water-blocking yarn, analysis is carried out on a plurality of collected detection units, and the integral water-blocking capability of the water-blocking yarn can be ensured to be qualified only when the water-blocking capability of each detection unit reaches the standard. Preferably, the detection unit in the present application ranges from a circular area with a diameter of 1 mm. Optionally, the range of the detection unit can be adjusted according to the actual size of the water-blocking yarn, and the yarn diameters of the currently used water-blocking yarns ZS-2.0, ZS-3.0 and ZS-5.0 are all larger than 1.0mm, so that the range of the detection unit is a circular area with the diameter of 1mm, and when the new yarn diameter of the water-blocking yarn is smaller than 1.0mm, the range of the detection unit can be adjusted adaptively. Optionally, the selection of detecting element scope is adjusted according to the yarn diameter that blocks water, and when detecting element diameter is too big, can improve the detection data volume by a wide margin, reduce detection efficiency, and when detecting element diameter is too little, can lead to the detection data incomplete, detection accuracy reduces.
Meanwhile, as the water-blocking yarns are helically stranded on the periphery of the stranded structure formed by the optical units and the reinforcing cores in the winding process, when the camera component is not aligned with the plane of the water-blocking yarns, the water-blocking yarns can be bent due to the soft characteristic, so that the quantity of water-blocking powder particles obtained by photographing is not the actual quantity of the surfaces of the water-blocking yarns. Therefore, when the detection unit is obtained, the shooting angle of the camera assembly is usually required to be adjusted, so that the obtained detection unit is unfolded in a straight shape, and the accuracy of the quantity and the particle size of the water blocking powder obtained by shooting is ensured.
The overall process of the water-blocking yarn on-line detection method in the application is briefly described below: firstly, acquiring a water blocking yarn surface image through photographing, and selecting a detection range to obtain a detection unit, wherein the diameter of the detection unit is 1mm. The method comprises the steps of amplifying images at a detection unit, acquiring the quantity and the particle size of water blocking powder in the detection unit in a manual or machine reading mode, dividing each water blocking powder into five diameter distribution areas, calculating the quantity of the water blocking powder with the diameter of 0.1-0.18, and judging whether the water blocking capability of the water blocking yarn is qualified. Calculating the total weight of the water-blocking powder according to the quantity of the water-blocking powder, the particle size distribution interval and the like, wherein the total weight of the water-blocking powder is the water-blocking powder volume multiplied by the water-blocking powder density; the water-absorbing multiplying power of the water-blocking powder is multiplied according to the total weight of the water-blocking powder to obtain the weight of the water-blocking powder after water absorption, the weight of the yarn is obtained according to the yarn area, thickness and density of the water-blocking yarn, the sum of the weight of the yarn and the weight of the water-blocking powder is the weight of the water-blocking yarn, the water-absorbing expansion multiplying power of the water-blocking yarn can be obtained by the weight of the water-blocking powder after water absorption and the weight of the yarn in a ratio of the weight of the water-blocking powder to the weight of the yarn, and finally the water-absorbing expansion multiplying power of the water-blocking yarn is compared with the standard water-absorbing expansion multiplying power of the water-blocking yarn to obtain the conclusion that whether the water-blocking capacity of the water-blocking yarn is qualified or not.
The application correspondingly comprises a water-blocking yarn online detection system which comprises a detection probe arranged on the yarn outlet device, wherein a detection port of the detection probe faces to a yarn winding shuttle of the yarn outlet device, and whether the water-blocking yarn breaks or not is judged by detecting the rotation condition of the yarn winding shuttle. While at the same time. The camera component is arranged opposite to the surface of the water-blocking yarn and is used for shooting the quantity and the grain size of the water-blocking powder on the surface of the water-blocking yarn.
Further, the number of the camera assemblies is multiple, the camera assemblies are arranged along the circumferential direction of the water-blocking yarns to obtain detection units with multiple positions and visual angles, when wrinkles or curls exist in the photographed detection units, the photographing of the detection units is not qualified, and the detection units with flat water-blocking yarn surfaces are selected.
Preferably, the detection probe is also connected with an alarm device, and when the detection probe senses the breakage of the water-blocking yarns, the alarm device can remind production personnel of the breakage of the water-blocking yarns through whistling, so that the production personnel can stop the production line in time, and the loss is reduced.
In the following, specific analysis is performed on the surface condition of the detection unit obtained by photographing:
It is noted that, when the total area and the weight of the water-blocking powder are calculated, the volume calculation of the water-blocking powder is performed according to the median value of the particle sizes of the water-blocking powder in each interval, for example, the water-blocking powder with the particle size of 0.24mm is calculated according to the particle size of 0.24mm, and the volume calculation of the water-blocking powder is performed in the form of spherical particles. The density of the water-blocking powder in the above embodiment is 0.7g/cm 3, and the water absorption rate of the water-blocking powder in the above embodiment is 150 times, namely, 1g of the water-blocking powder can absorb 150g of water and does not drip in one minute, and the water-blocking powder is specifically referred to as standard YD/T1115.3.
In the above examples 1 to 6, the water blocking yarn ZS-2.0 was selected, the standard water swelling ratio was 65, and by contrast, examples 1 to 3 were in accordance with the water blocking standard, and examples 4 to 6 were not in accordance with the water blocking standard. According to the online detection method for the water-blocking yarn, after the quantity and the particle size of the water-blocking powder particles in the detection unit are obtained through shooting, the expansion rate of the detection unit area can be directly obtained through a specific formula, so that whether the water-blocking capacity of the water-blocking yarn is qualified during detection is obtained. Whether the water blocking effect is qualified or not is calculated according to the expansion ratio (water absorbing capacity) in the current embodiment, namely, the calculated expansion ratio can represent the actual water blocking capacity of the water blocking yarn.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. The on-line detection method for the water blocking yarn is characterized by comprising the following steps of:
s1, taking an image of the surface of a water-blocking yarn to obtain a detection unit;
S2, acquiring the quantity and the particle size of the water-repellent powder particles in the detection unit;
S3, acquiring the total mass of the water-blocking powder according to the particle size and the particle number of the water-blocking powder, and calculating to obtain the theoretical water absorption weight of the water-blocking powder;
s4, obtaining the yarn weight of the water-blocking yarn, and calculating to obtain the total weight of the water-blocking yarn;
S5, acquiring the water-absorbing expansion rate of the water-blocking yarn according to the theoretical water-absorbing weight of the water-blocking powder and the total weight of the water-blocking yarn;
S6, comparing the water-absorbing expansion rate of the water-blocking yarn with the standard water-absorbing expansion rate of the water-blocking yarn, and judging whether the water-blocking capacity of the water-blocking yarn is qualified;
the yarn detecting device comprises a yarn detecting unit, a yarn detecting unit and a yarn detecting unit, wherein the detecting unit is positioned between a yarn outlet of the yarn detecting device and the surface of the light unit.
2. The method for on-line detection of water blocking yarn according to claim 1, wherein step S2 specifically comprises:
Dividing the water-blocking powder particle size distribution into five sections of 0.24+/-0.02 mm, 0.2+/-0.02 mm, 0.16+/-0.02 mm, 0.12+/-0.02 mm and 0.08-0.10 mm;
respectively acquiring the water blocking powder quantity of the detection unit in five granularity distribution intervals;
obtaining the ratio of the water-blocking powder quantity with the particle size of 0.1-0.18 mm to the total water-blocking powder quantity;
s3, when the water-blocking powder with the particle size of 0.1-0.18 mm accounts for not less than 0.4;
when the water blocking powder with the particle size of 0.1-0.18 mm accounts for less than 0.4, the water blocking capability of the water blocking yarn is unqualified.
3. The method for on-line detection of water-blocking yarn according to claim 1, wherein the theoretical water-absorbing weight of the water-blocking powder in step S3 is calculated according to the total weight of the water-blocking powder and the water-absorbing rate of the water-blocking powder.
4. The method for on-line detection of water-blocking yarns according to claim 2, wherein in the step S1, the number of detection units is plural, the detection units are located at different positions of the water-blocking yarns, and when the water-blocking yarns of the detection units have water-absorbing expansion rates larger than the standard water-absorbing expansion rate of the water-blocking yarns, the water-blocking capability of the water-blocking yarns is qualified.
5. The method for on-line detection of water-blocking yarn according to claim 3, wherein the water-blocking powder water absorption rate in step S3 is 150.
6. The method according to claim 1, wherein the standard water-absorbing expansion ratio of the water-blocking yarn in the step S6 is determined according to the specification of the water-blocking yarn, wherein the standard water-absorbing expansion ratio of the water-blocking yarn ZS-2.0 is 65, the standard water-absorbing expansion ratio of the water-blocking yarn ZS-3.0 is 70, and the standard water-absorbing expansion ratio of the water-blocking yarn ZS-5.0 is 80.
7. The method for on-line detection of water blocking yarn according to claim 1, further comprising, before step S1:
Detecting the yarn breakage condition of the water-blocking yarn: detecting the rotation frequency of a yarn winding shuttle of the yarn winding device, and turning the step S1, wherein when the yarn winding shuttle rotates, the water-blocking yarn is not broken; when the yarn winding shuttle stops rotating, the water blocking yarn breaks, and the water blocking capability of the water blocking yarn is disqualified.
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