CN107192514A - Sheath defect inspection method - Google Patents
Sheath defect inspection method Download PDFInfo
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- CN107192514A CN107192514A CN201710371417.2A CN201710371417A CN107192514A CN 107192514 A CN107192514 A CN 107192514A CN 201710371417 A CN201710371417 A CN 201710371417A CN 107192514 A CN107192514 A CN 107192514A
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- sheath
- cable
- pressure
- inspection method
- monitoring device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2846—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for tubes
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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Whether the present invention provides sheath defect inspection method, be related to the technical field of cable jacket detection, changed by the gas pressure intensity in sensing equipment main body, judges that being located at equipment body inner sheath surface whether there is defect.The sheath defect inspection method that the present invention is provided monitors the pressure change of intracavitary using detection, so as to detect cable sheath whether hole, when cavity pressure change is monitored greatly, the gas for monitoring intracavitary enters in cable from the hole of cable, so as to which the pressure for monitoring intracavitary drastically diminishes, so supervising device sends alarm and records the position of cable hole, can so realize the detection to the hole of cable jacket.
Description
Technical field
The present invention relates to the detection technique field of cable jacket, more particularly, to a kind of sheath defect inspection method.
Background technology
Very high to the integrity demands of jacket surface as cable product, sheath material is except meeting product standard
Specified in outside indices, the integrality of jacket surface will directly affect product service life, if hole occurs in jacket surface
Hidden danger, lays environment difference according to product, will produce different degrees of hidden danger of quality.The open defect inspection of current cable products
Survey method mainly has two class modes：
Conventional wire cable product is typically monitored on-line using power frequency spark instrument, when running into sheath hole hidden danger, internal layer
Metal level will be by spark instrument high-voltage breakdown, and warning reminding will be carried out by producing to puncture after defect, notifies producers to carry out dock
Reason.
Power frequency spark instrument monitoring technology can not play monitoring effect for non-metallic optical fiber cables, and spark instrument equipment is unable to reach pair
Non-metallic products punctures purpose.Therefore it is only capable of relying on take-up employee touch discovery, but by hand especially high for the requirement of personnel,
And then can not manually be found for very tiny aperture, product quality there will be hidden danger.
For a kind of nonmetallic or air-blowing micro-cable product on-line monitoring method, mainly by camera technique, using shooting
The tested cable outer surface camera of one week of visual angle covering.When cable, which is passed through, is taken region, tested cable is segmented
It is continuously shot, the photo of shooting is analyzed with image analysis program, judges cable surface defect type.There is one kind in addition
The reflective detection method of aberration, mainly judges that cable surface whether there is defect, with taking the photograph by the color difference analysis to cable surface
As contrast belongs to the optical monitoring class method of a major class.
Shoot analytic approach and there are problems that serious false alarm in the simple sheath of one class of production, because simple cable is cable core
The product of direct sheath, its cable surface produces change with the stranded print of cable core, and cable table has obvious rough characteristic, recessed
Salient point is easily monitored to be mistaken for hole, and sags and crests there will necessarily be aberration, therefore is either clapped when producing such optical cable
False alarm problem can be produced by taking the photograph analytic approach, color difference analysis method.
The content of the invention
It is an object of the invention to provide sheath defect inspection method, there is no one kind can with the cable for solving to produce now
Well detection cable whether the technical problem of hole.
Whether a kind of sheath defect inspection method that the present invention is provided, become by the gas pressure intensity in sensing equipment main body
Change, judge that being located at equipment body inner sheath surface whether there is defect.
Further, comprise the following steps：
(a) cable is arranged on sheath monitoring device, be passed through into sheath monitoring device or gas bleeding, determine sheath
Initial gas pressure intensity P in monitoring device0；
(b) cable is moved in sheath monitoring device, and continue to determine real-time gas pressure P in sheath monitoring devicet,
Work as Pt≠P0When, then judge the sheath existing defects of cable in now equipment body.
Further, in step (a), initial gas pressure intensity P in sheath monitoring device is determined0, comprise the following steps：
(s) taken away using vavuum pump by the inflation connector in sheath monitoring device by intracavity gas are monitored；
(m) power of vavuum pump is reduced, makes pressure stability in sheath monitoring device；
(n) the initial gas pressure intensity P by supervising device reading now0。
Further, in step (a), initial gas pressure intensity P in sheath monitoring device is determined0, comprise the following steps：
(x) using air compressor by the inflation connector in sheath monitoring device to monitoring interacvity air-filling；
(y) power of air compressor is reduced, makes pressure stability in sheath monitoring device；
(z) the initial gas pressure intensity P by supervising device reading now0。
Further, in step (b), as/Pt-P0During/﹥ δ, existing defects on cable jacket are judged, wherein δ is measurement
Error.
Further, in addition to step (c)；
In step (c), set and set alarm pressure to be P on supervising device0± 0.5mPa, when supervising device is monitored
Survey intracavitary pressure Pt≤P0- 0.5mPa or Pt≥P0+ 0.5mPa, supervising device sends alarm, and records now sheath defect
Position on cable.
Further, in step (a), initial gas pressure intensity P in sheath monitoring device is determined0For 3mPa.
Further, in addition to step (c)；
In step (c), set and set alarm pressure to be 2.5mPa on supervising device, when supervising device monitors to monitor chamber
Interior pressure Pt≤ 2.5mPa, supervising device sends alarm, and records now position of the sheath defect on cable.
Further, in step (a), initial gas pressure intensity P in sheath monitoring device is determined0For -2mPa.
Further, in addition to step (c)；
In step (c), set and set alarm pressure to be -1.5mPa on supervising device, when supervising device monitors monitoring
Intracavitary pressure Pt>=-1.5mPa, supervising device sends alarm, and records now position of the sheath defect on cable.
The sheath defect inspection method that the present invention is provided monitors the pressure change of intracavitary using detection, so as to detect cable
Sheath whether hole, when monitor cavity pressure change greatly when, monitoring intracavitary gas enter line from the hole of cable
In cable, so that the pressure for monitoring intracavitary drastically diminishes, such supervising device sends alarm and records the position of cable hole, so
The detection to the hole of cable jacket can be realized.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the stereogram of sheath monitoring device provided in an embodiment of the present invention；
Fig. 2 for Fig. 1 sheath monitoring devices provided rearview；
Fig. 3 for Fig. 1 sheath monitoring devices provided left view；
Fig. 4 for Fig. 1 sheath monitoring devices provided installed part and the mounting structure schematic diagram of seal.
Icon：100- supervising devices；200- upper shells；201- arc ports；300- lower houses；400- upper connectors；500-
Lower connector；600- pressure sensors；700- inflates connector；800- hinges；900- seals；110- installed parts；120- rings
Shape groove；130- annular boss；140- through holes；150- side openings；The connecting holes of 160- first；The connecting holes of 170- second.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
As Figure 1-Figure 4, a kind of sheath monitoring device, including equipment body and the monitoring dress being arranged on equipment body
Put 100,
Monitoring chamber is provided with the equipment body, and first connected with monitoring chamber is provided with the equipment body
The connecting hole 170 of connecting hole 160 and second；
The pressure sensor 600 of monitoring monitoring cavity pressure change is provided on the equipment body.
The equipment body includes upper shell 200 and lower house 300, in 300 liang of the upper shell 200 and the lower house
End is provided with arc port 201, and the arc port 201 of the upper shell 200 is connected with the formation of arc port 201 first of lower house 300
The connecting hole 170 of hole 160 and second.
The inflation connector 700 for inflation is provided with the upper shell 200 and/or lower house 300.
The upper shell 200 is connected with the side of lower house 300 by hinge 800；In the opposite side of upper shell 200
Upper connector 400 is provided with, the lower connector used cooperatively with upper connector 400 is provided with the opposite side of lower house 300
500。
Installed part 110 is provided with first connecting hole 160 and second connecting hole 170, and in the peace
Seal 900 is provided with piece installing 110.
The seal 900 is provided with the through hole 140 passed through for cable.
The seal 900 is made of rubber, and the side being arranged on cable is provided in the side of seal 900
Opening 150.
The installed part 110 includes mounting means 110 and lower installed part 110, and the mounting means 110 and the lower peace
The side of piece installing 110 is using being articulated and connected, and opposite side is connected using fixture.
Annular groove 120 is provided with the madial wall of the installed part 110, and is provided with and ring on the seal 900
The annular boss 130 that shape groove 120 matches.
In certain embodiments, two seals 900 are arranged on cable, then installed part 110 is arranged on seal
On 900, seal 900 is arranged on the first connecting hole 160 and the second connecting hole 170 on equipment body again, and wrap-up turns
Moving-wire cable is moved from the first connecting hole 160 to the second connecting hole 170, is finally wound on wrap-up.
After cable is installed in sheath monitoring device, it is connected to by pipeline at inflation connector 700, to the inside
Inflation is evacuated, and makes the pressure change of monitoring intracavitary, and pressure sensor 600 is monitored to monitor the pressure change of intracavitary, will believed
Supervising device 100 number is passed to, supervising device 100 is contrasted according to pressure now and the alarm pressure value of setting, probably reached
When alarm pressure value, supervising device 100 sends alarm, and record that now cable moves in sheath monitoring device away from
From, when cable winding after, can according to record the online cable of hole on position, the later stage facilitate operating personnel handled or
Hard stop processing.
Whether the present invention provides a kind of sheath defect inspection method, changed by the gas pressure intensity in sensing equipment main body,
Judge that being located at equipment body inner sheath surface whether there is defect.
The pressure outside pressure and equipment body in equipment body is different；Cable set main body in move when
Wait, when hole occurs in cable, hole will make the pressure in pressure and equipment body in cable tend to be equal, in equipment body
Pressure will reduce or raise, so prove that cable jacket surface is defective.
In a preferred embodiment of the invention, comprise the following steps：
(a) cable is arranged on sheath monitoring device, be passed through into sheath monitoring device or gas bleeding, determine sheath
Initial gas pressure intensity P in monitoring device0；
(b) cable is moved in sheath monitoring device, and continue to determine real-time gas pressure P in sheath monitoring devicet,
Work as Pt≠P0When, then judge the sheath existing defects of cable in now equipment body.
In a preferred embodiment of the invention, cable is arranged in sheath monitoring device, and gas is passed through into equipment body
Body or gas bleeding, make the pressure in sheath monitoring device there is pressure difference with the pressure outside sheath monitoring device, so protect
Cover the pressure P of monitoring device starting0；With the motion of cable, when the pressure that cable occurs in hole, sheath monitoring device becomes
Change, gas pressure intensity now is Pt；Pt≠P0；So gas is entered in sheath monitoring device or discharged gas, and gas
Can only enter or go out from the hole of cable, thus monitor the sheath of cable.
In a preferred embodiment of the invention, in step (a), initial gas pressure intensity in sheath monitoring device is determined
P0, comprise the following steps：
(s) taken away using vavuum pump by the inflation connector in sheath monitoring device by intracavity gas are monitored；
(m) power of vavuum pump is reduced, makes pressure stability in sheath monitoring device；
(n) the initial gas pressure intensity P by supervising device reading now0。
In order that the pressure of the monitoring chamber in sheath monitoring device is differed with extraneous pressure, pass through vavuum pump and inflation
Connector is connected, and the gas in sheath monitoring device is taken away, and maintains gas pressure intensity P stable in sheath monitoring device0, pressure
The data detected are passed to supervising device by force snesor, so that supervising device shows now pressure P0。
In a preferred embodiment of the invention, in step (a), initial gas pressure intensity in sheath monitoring device is determined
P0, comprise the following steps：
(x) using air compressor by the inflation connector in sheath monitoring device to monitoring interacvity air-filling；
(y) power of air compressor is reduced, makes pressure stability in sheath monitoring device；
(z) the initial gas pressure intensity P by supervising device reading now0。
In order that the pressure of the monitoring chamber in sheath monitoring device and the external world pressure differ, by air compressor to
Air is passed through in sheath monitoring device, the pressure in sheath monitoring device is more than the pressure outside sheath monitoring device；In monitoring
When cable hole, it may appear that slow gas leakage, by lasting a small amount of to monitoring interacvity air-filling of air compressor, make it
Keep stable pressure P0。
In a preferred embodiment of the invention, in step (b), as/Pt-P0During/﹥ δ, judge exist on cable jacket
Defect, wherein δ are measurement error.
Because any instrument has error, therefore, in order to improve the accuracy of sheath monitoring device detection, in the present invention
Preferred embodiment in, as/Pt-P0During/﹥ δ, cable existing defects are judged, to avoid being reported by mistake.
δ is measurement error, is air pressure P in sheath monitoring device0The half of fluctuation range size.
In a preferred embodiment of the invention, in addition to step (c),
In step (c), set and set alarm pressure to be P on supervising device0± 0.5mPa, when supervising device monitors monitoring
Intracavitary pressure Pt≤P0- 0.5mPa or Pt≥P0+ 0.5mPa, supervising device sends alarm, and now sheath defect exists record
Position on cable.
In order to the defect on more accurate measurement cable, alarm pressure is set on supervising device, when monitoring intracavitary
Pressure reduction or when be increased to alarm pressure, supervising device sends alarm, and operating personnel are handled.
In a preferred embodiment of the invention, in step (a), initial gas pressure intensity P in sheath monitoring device is determined0
For 3mPa；
In order to preferably monitor the initial gas pressure intensity P in the sheath of cable, sheath monitoring device on-line0For 3mPa；This
The pressure of numerical value can preferably be stablized, and sheath monitoring device disclosure satisfy that the requirement of sealing, and if hole occurs in cable,
Gas can be from the hole of cable quickly enters cable, and the pressure in sheath monitoring device can quickly change, and then
Touch alarm.
In a preferred embodiment of the invention, in addition to step (c),
In step (c), set and set alarm pressure to be 2.5mPa on supervising device, when supervising device monitors to monitor intracavitary
Pressure Pt≤ 2.5mPa, supervising device sends alarm, and records now position of the sheath defect on cable.
Monitor the pressure P of intracavitary0, because the pressure of sheath monitoring device needs progress air compressor persistently to provide gas
To stablize, such P0There will be certain fluctuation, in order to preferably more accurately monitor the hole on cable, by supervising device
Alarm pressure be set to 2.5mPa, can so avoid due to the fluctuation of sheath monitoring device, and cause supervising device by mistake hair
Go out alarm.
The sealing of sheath monitoring device, P0Fluctuation it is smaller, such alarm pressure can be to P0It is arranged close to.
In a preferred embodiment of the invention, in step (a), initial gas pressure intensity P in sheath monitoring device is determined0
For -2mPa；
In order to preferably monitor the initial gas pressure intensity P in the sheath of cable, sheath monitoring device on-line0For -2mPa；This
The pressure of numerical value can preferably be stablized, and sheath monitoring device disclosure satisfy that the requirement of sealing, and if hole occurs in cable,
The pressure that gas can quickly enter in sheath monitoring device, sheath monitoring device from the hole of cable can quickly become
Change, and then touch alarm.
In a preferred embodiment of the invention, in addition to step (c),
In step (c), set and set alarm pressure to be -1.5mPa on supervising device, when supervising device monitors to monitor chamber
Interior pressure Pt>=-1.5mPa, supervising device sends alarm, and records now position of the sheath defect on cable.
Monitor the pressure P of intracavitary0, come steady because the pressure of sheath monitoring device needs progress vavuum pump to continue gas bleeding
It is fixed, such P0There will be certain fluctuation, in order to preferably more accurately monitor the hole on cable, by the police of supervising device
Report pressure is set to -1.5mPa, can so avoid due to the fluctuation of sheath monitoring device, and causes supervising device to send police by mistake
Report.
With reference to specific embodiment, the present invention is described further.
Embodiment 1
(a) cable is arranged on sheath monitoring device, gas is passed through to sheath monitoring device by air compressor, makes shield
Pressure in set monitoring device reaches 3mPa, adjusts air compressor, makes sheath monitoring device pressure stable in 3mPa；
(b) cable is moved in sheath monitoring device, and continue to determine real-time gas pressure P in sheath monitoring devicet,
Work as PtDuring ＜ 3mPa- δ, then the sheath existing defects of cable in now equipment body are judged.
(c) set sets alarm pressure to be 2.5mPa on supervising device, when supervising device monitors monitoring intracavitary pressure Pt
≤ 2.5mPa, supervising device sends alarm, and records now position of the sheath defect on cable.
The sheath defect inspection method that the present invention is provided monitors the pressure change of intracavitary using detection, so as to detect cable
Sheath whether hole, when monitor cavity pressure change greatly when, monitoring intracavitary gas enter line from the hole of cable
In cable, so that the pressure for monitoring intracavitary drastically diminishes, such supervising device sends alarm and records the position of cable hole, so
The detection to the hole of cable jacket can be realized.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of sheath defect inspection method, it is characterised in that whether changed by the gas pressure intensity in sensing equipment main body, sentenced
The disconnected equipment body inner sheath surface that is located at whether there is defect.
2. sheath defect inspection method according to claim 1, it is characterised in that comprise the following steps：
(a) cable is arranged on sheath monitoring device, be passed through into sheath monitoring device or gas bleeding, determine sheath monitoring
Initial gas pressure intensity P in equipment0；
(b) cable is moved in sheath monitoring device, and continue to determine real-time gas pressure P in sheath monitoring devicet, work as Pt
≠P0When, then judge the sheath existing defects of cable in now equipment body.
3. sheath defect inspection method according to claim 2, it is characterised in that in step (a), determines sheath monitoring
Initial gas pressure intensity P in equipment0, comprise the following steps：
(s) taken away using vavuum pump by the inflation connector in sheath monitoring device by intracavity gas are monitored；
(m) power of vavuum pump is reduced, makes pressure stability in sheath monitoring device；
(n) the initial gas pressure intensity P by supervising device reading now0。
4. sheath defect inspection method according to claim 2, it is characterised in that in step (a), determines sheath monitoring
Initial gas pressure intensity P in equipment0, comprise the following steps：
(x) using air compressor by the inflation connector in sheath monitoring device to monitoring interacvity air-filling；
(y) power of air compressor is reduced, makes pressure stability in sheath monitoring device；
(z) the initial gas pressure intensity P by supervising device reading now0。
5. sheath defect inspection method according to claim 2, it is characterised in that in step (b), as/Pt-P0/ ﹥ δ
When, judge existing defects on cable jacket, wherein δ is measurement error.
6. sheath defect inspection method according to claim 2, it is characterised in that also including step (c)；
In step (c), set and set alarm pressure to be P on supervising device0± 0.5mPa, when supervising device monitors to monitor intracavitary
Pressure Pt≤P0- 0.5mPa or Pt≥P0+ 0.5mPa, supervising device sends alarm, and record now sheath defect in cable
On position.
7. sheath defect inspection method according to claim 6, it is characterised in that in step (a), determines sheath monitoring
Initial gas pressure intensity P in equipment0For 3mPa.
8. sheath defect inspection method according to claim 7, it is characterised in that also including step (c)；
In step (c), set and set alarm pressure to be 2.5mPa on supervising device, when supervising device monitors to monitor intracavitary pressure
Pt≤ 2.5mPa, supervising device sends alarm, and records now position of the sheath defect on cable.
9. sheath defect inspection method according to claim 6, it is characterised in that in step (a), determines sheath monitoring
Initial gas pressure intensity P in equipment0For -2mPa.
10. sheath defect inspection method according to claim 9, it is characterised in that also including step (c)；
In step (c), set and set alarm pressure to be -1.5mPa on supervising device, when supervising device monitors to monitor intracavitary
Pressure Pt>=-1.5mPa, supervising device sends alarm, and records now position of the sheath defect on cable.
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|---|---|---|---|
| CN201710371417.2A CN107192514B (en) | 2017-05-23 | 2017-05-23 | Sheath defect detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710371417.2A CN107192514B (en) | 2017-05-23 | 2017-05-23 | Sheath defect detection method |
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| CN107192514A true CN107192514A (en) | 2017-09-22 |
| CN107192514B CN107192514B (en) | 2020-04-07 |
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| CN201710371417.2A Active CN107192514B (en) | 2017-05-23 | 2017-05-23 | Sheath defect detection method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113695448A (en) * | 2021-10-28 | 2021-11-26 | 南通炎辰金属制品有限公司 | Stamping equipment for processing automobile parts |
| CN114047197A (en) * | 2021-10-25 | 2022-02-15 | 上海仪电智能科技有限公司 | Cable surface defect detection device based on machine vision and operation method |
| CN114441114A (en) * | 2022-04-07 | 2022-05-06 | 山东昆嵛电缆有限公司 | Cable sheath sealing performance detection device and method |
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