CN104678253A - Detection method for cable cracking point - Google Patents
Detection method for cable cracking point Download PDFInfo
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- CN104678253A CN104678253A CN201310628087.2A CN201310628087A CN104678253A CN 104678253 A CN104678253 A CN 104678253A CN 201310628087 A CN201310628087 A CN 201310628087A CN 104678253 A CN104678253 A CN 104678253A
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- cable
- sheath
- detection method
- moist object
- cracking point
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Abstract
The invention discloses a detection method for a cable cracking point. The detection method comprises the following steps: providing a cable and removing a sheath at one end of the cable; detecting whether the cable is conducted or not; providing a wet object immersed in water and arranging the wet object on the cable in a sleeving manner and enabling the wet object to be close to the end without the sheath; providing a voltage withstanding instrument, and clamping two electrodes of the voltage withstanding instrument on the wet object and the end, without the sheath, of the cable; starting the voltage withstanding instrument and adjusting the voltage withstanding instrument to output pre-set voltage; sliding the wet object to the other end from the end, without the sheath, of the cable; and checking the sheath of the cable. The two electrodes of the voltage withstanding instrument are clamped on the wet object and the end, without the sheath, of the cable, and the wet object slides to the other end from the end, without the sheath, of the cable. The position of the cable cracking point of the cable can be rapidly detected so that the reliability of a product is improved and the guarantees are provided for the practicability of the cable.
Description
Technical field
The present invention relates to cable detection field, particularly relate to the detection method of a kind of cable cracking point.
Background technology
Cable, as a kind of electric power, signal transmission medium, is widely used in life.Cable jacket is positioned at cable outermost layer, adopts Polyvinylchloride (PVC) or tygon (PE) bi-material more.Its Main Function has: protection and insulating effect; Prevent cable from weathering there being the environment that lays of moisture content, corrosive substance.For the cable having protective metal shell, being positioned at the outermost oversheath of cable is for protection protective metal shell (as corrugated aluminium sheath) designs from the corrosion of cable ambient substance; For the cable not having protective metal shell, oversheath just directly plays protection to major insulation and sealing function, prevents the electromagnetic induction of conductor current in high-pressure delivery process from producing.For avoiding induced voltage to form circulation on metal sheath, reduce the current-carrying capacity of cable, the oversheath of cable must have good insulating property, makes metal sheath insulation against ground.The oversheath of cable is impaired, gently then causes cable metal shield circulating current to increase, and reduces the transmission capacity of cable line; Heavy then cable metal sheath is corroded, and then jeopardize the major insulation of cable, until insulation breakdown, have an accident.
Cable in light fixture mainly as the wire providing the energy; often can be subject to the winding of external force during use, bend; and along with the increase of service time; cable oversheath there will be crackle by other factorses such as aging, wearing and tearing; whole piece cable appearance is caused to ftracture; lose the protection to internal insulating layer and conductor, finally cause lamp failure, lose it as the effect protecting insulation course and conductor.
Therefore, need to detect fast cable oversheath, and now a kind of method that can detect cable sheath cracking point.
Summary of the invention
The object of the present invention is to provide a kind of detection method of the cable cracking point facilitating detection streamer line sheath whether impaired.
In order to solve the problems of the technologies described above, the invention provides the detection method of a kind of cable cracking point, tool
Body comprises the steps:
One cable is provided, removes the sheath of described cable one end, detect the whether conducting of described cable;
The moist object of one immersion is provided, described moist object is placed on described cable, and near described removal sheath one end;
One voltage resistant instrument is provided, the two poles of the earth of described voltage resistant instrument is sandwiched in respectively described moist object and described cable removal sheath one end;
Open described voltage resistant instrument, regulate described voltage resistant instrument to export predeterminated voltage;
Described moist object is removed sheath one end along cable slide to the other end;
Check described cable sheath.
Wherein, described in the moist object of an immersion is provided, described moist object is placed on described cable, and also comprises the steps: in the step of described removal sheath one end
There is provided a cylinder, the other end described cable being removed sheath is fixed on described cylinder week side, and makes described cable be wound in described cylinder week side;
There is provided a support, by described cylinder level frame on described support.
Wherein, described in a cylinder is provided, the other end described cable being removed sheath is fixed on described cylinder week side, and described cable is wound in the step of described cylinder week side, and described body diameter is 3 times of described cable diameter.
Wherein, in the described step that described moist object is slided along cable removal sheath one end to the other end, secure the above moist object, rotate described cylinder by preset rotation speed.
Wherein, in the described step by described moist object along cable removal sheath one end to the other end by pre-set velocity slip, described preset rotation speed is 30r/min.
Wherein, in the described step that described moist object is slided along cable removal sheath one end to the other end, described cable is removed sheath one end and fastens counterweight.
Wherein, described in a cable is provided, remove the sheath of described cable one end, detect in the step of described cable whether conducting, utilize external application table to detect the whether conducting of described cable.
Wherein, the described voltage resistant instrument of described unlatching, regulate described voltage resistant instrument to export in the step of predeterminated voltage, described predeterminated voltage is 1500V.
Wherein, described in the moist object of an immersion is provided, described moist object is placed on described cable, and in the step of described removal sheath one end, described moist object is the tabular wet foam that 1cm is thick.
Wherein, described in a cable is provided, remove the sheath of described cable one end, detect in the step of described cable whether conducting, described cable line length 1.5m, described cable is lamp cable line.
The detection method of described cable cracking point of the present invention, by the two poles of the earth of described voltage resistant instrument being sandwiched in respectively described moist object and described cable removal sheath one end, then slides described moist object to the other end along cable removal sheath one end.Realize detecting which the cracking point of cable has fast, improve product reliability, for the practicality of cable improves guarantee.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the process flow diagram of the detection method of cable provided by the invention cracking point.
Embodiment
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is clearly and completely described.
Refer to Fig. 1, the detection method of a kind of cable cracking point that embodiment of the present invention provides, the detection method of described cable cracking point comprises the steps:
Step 101: provide a cable, removes the sheath of described cable one end, detects the whether conducting of described cable.In present embodiment, described cable adopts and the matching used cable of light fixture, described cable line length 1.5m, certainly, in other embodiments, described cable can also be adopt the matching used cable of other household electrical appliance, and described cable length can also be longer than 1.5m.In order to accurately detect described cable cracking point, first need to guarantee that the core of described cable can conducting, so provide a cable in described step, remove the sheath of described cable one end, detect described cable whether in conducting, utilize external application table to detect the whether conducting of described cable.Concrete, external application table is adjusted to ohms range, makes two test pens of external application table connect the two ends of described cable respectively.If ohm index is comparatively large, shows the non-conducting of cable, if ohm index is less, show cable conducting.Certainly, be in mode at other, the whether conducting of described cable can also be tested with digital universal meter.Removed by the sheath of described cable one end, be conveniently the core of cable is connected voltage, whether the sheath everywhere of test cable line is impaired.
Step 102: the moist object providing an immersion, is placed on described moist object on described cable, and near described removal sheath one end.In present embodiment, described moist object is the tabular wet foam that 1cm is thick.Certainly, in other embodiments, described moist object can also be the wet sponge of square.Concrete, described moist object geometric center is provided with a through hole, and described cable is through described through hole.Described through-hole wall and described cable outer wall interference fit.Moist object is utilized to also have moisture content, the impaired place of cable can be infiltrated through, its cable sheath outside is connected with cable core, conveniently detect when can connect in the core of cable when described moist object is in which position of cable sheath, just can measure the impaired or cracking in which position of sheath of cable.
In order to can cable be secured the above, and described moist object is moved relative to described cable, conveniently detect that on cable, whether position, everywhere is impaired.In present embodiment, described in the moist object of an immersion is provided, described moist object is placed on described cable, and in the step of described removal sheath one end, also comprises:
Step 103: provide a cylinder, the other end described cable being removed sheath is fixed on described cylinder week side, and makes described cable be wound in described cylinder week side.
In order to draw described cable in, investigating for position, cable everywhere simultaneously, and don't taking up room.In present embodiment, being wound on cylinder by described cable, certainly, giving in other embodiments, can also be wound on bobbin winoler by described cable.In order to not make winding work too complicated, in present embodiment, described body diameter is 3 times of described cable diameter, certainly, in other embodiments, if use bobbin winoler to be wound around described cable, then described body diameter can also be 2 times of cable diameter.The other end of described removal cable is fixed on all sides of cylinder, it is the cracking point in order to first detect described cable sheath from cable removes sheath one end, and prevent after detection terminates, the two ends of described cable are intertwined, so that cable is in disorder.Certainly, in other embodiments, can also be by stretching for described cable two ends and be fixed on a test board.
Step 104: provide a support, by described cylinder level frame on described support.
In order to make when detecting described cable, more accurately, described cable is more stable relative to moving of described moist object.So, in present embodiment, by described cylinder level frame on support.Concrete, the corresponding described cylinder two ends of described support arrange circular hole, and described cylinder inserts in described circular hole.And guarantee that described cylinder can uniform rotation.Certainly, in other embodiments, if described cable is fixed on test board, then corresponding described cable system two ends on described test board are needed to provide two holders respectively.
The two poles of the earth of described voltage resistant instrument are sandwiched in described moist object by step 105: provide a voltage resistant instrument respectively and described cable removes sheath one end.
The two poles of the earth of described voltage resistant instrument are sandwiched in respectively moist object and described cable removal sheath one end, when described voltage resistant instrument provides voltage, if there is cracking point in described cable sheath, then the core of cable and moist object are connected, voltage instantaneous between the two poles of the earth of described voltage resistant instrument is increased, just can detect whether cable ftractures.
Step 106: open described voltage resistant instrument, regulates described voltage resistant instrument to export predeterminated voltage.In present embodiment, described predeterminated voltage is 1500V, and certainly, in other embodiments, described predeterminated voltage can also be 1000V or 1200V, or other any voltage values of 1800V.High pressure is increased owing to removing sheath one end to described moist object and described cable, once there is cracking point in described cable sheath, can be there is gap discharge and described cable sheath is punctured formation blackspot in the high pressure then produced instantaneously, be convenient to the position observing cable cracking point.
Step 107: described moist object is removed sheath one end along cable and slides to the other end.In present embodiment, because described cable is wound on described cylinder, slide to realize the relatively described cable of described moist object.Need to remove sheath one end at described cable and fasten counterweight, concrete, the heavy 1Kg of described counterweight certainly, in other embodiments, can also be remove at described cable the counterweight that heavy 2Kg is fastened in sheath one end.Secure the above moist object simultaneously, rotate described cylinder by preset rotation speed degree, make described cable at the uniform velocity through the through hole of described moist object.Concrete, described preset rotation speed is 30r/min, and certainly, in other embodiments, described preset rotation speed can also be 20r/min.Certainly, in other embodiments, if described cable is fixed on test board, then can also be fixed on a slide block by described moist object, described slide block and described test board slide and arrange, and the described slide block that at the uniform velocity slides can realize the detection of described cable.When described moist object relatively along described cable remove sheath one end at the uniform velocity slide to the other end time, if Discharge Phenomena or occur pyrophoric behavio(u)r, show that cable exists cracking.
Step 108: check described cable sheath.After detection terminates, close described voltage resistant instrument, and described cable is disassembled from cylinder, observe all sides of cable, whether there is blackspot, burn or porose place, if exist, show that cable exists cracking point herein, need again to consider for cable production technology to there is cracking point reason, carry out change in design, and need replacing cable not re-use.If there is not this type of phenomenon, show that described cable meets production specification, can continue to use.
The detection method of described cable cracking point of the present invention, by the two poles of the earth of described voltage resistant instrument being sandwiched in respectively described moist object and described cable removal sheath one end, then slides described moist object to the other end along cable removal sheath one end.Realize detecting which the cracking point of cable has fast, improve product reliability, for the practicality of cable improves guarantee.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a detection method for cable cracking point, is characterized in that, specifically comprise the steps:
One cable is provided, removes the sheath of described cable one end, detect the whether conducting of described cable;
The moist object of one immersion is provided, described moist object is placed on described cable, and near described removal sheath one end;
One voltage resistant instrument is provided, the two poles of the earth of described voltage resistant instrument is sandwiched in respectively described moist object and described cable removal sheath one end;
Open described voltage resistant instrument, regulate described voltage resistant instrument to export predeterminated voltage;
Described moist object is removed sheath one end along cable slide to the other end;
Check described cable sheath.
2. the detection method of cable according to claim 1 cracking point, is characterized in that, described in the moist object of an immersion is provided, described moist object is placed on described cable, and also comprises the steps: in the step of described removal sheath one end
There is provided a cylinder, the other end described cable being removed sheath is fixed on described cylinder week side, and makes described cable be wound in described cylinder week side;
There is provided a support, by described cylinder level frame on described support.
3. the detection method of cable cracking point according to claim 2, it is characterized in that, describedly provide a cylinder, the other end described cable being removed sheath is fixed on described cylinder week side, and described cable is wound in the step of described cylinder week side, described body diameter is 3 times of described cable diameter.
4. the detection method of cable cracking point according to claim 2, is characterized in that, in described step of being slided along cable removal sheath one end to the other end by described moist object, secures the above moist object, rotates described cylinder by preset rotation speed.
5. the detection method of cable cracking point according to claim 4, is characterized in that, in the described step by described moist object along cable removal sheath one end to the other end by pre-set velocity slip, described preset rotation speed is 30r/min.
6. the detection method of cable cracking point according to claim 4, is characterized in that, in described step of being slided along cable removal sheath one end to the other end by described moist object, described cable is removed sheath one end and fastens counterweight.
7. the detection method of cable cracking point according to claim 1, it is characterized in that, described in a cable is provided, remove the sheath of described cable one end, detect in the step of described cable whether conducting, utilize external application table to detect the whether conducting of described cable.
8. the detection method of cable cracking point according to claim 1, it is characterized in that, the described voltage resistant instrument of described unlatching, regulate described voltage resistant instrument to export in the step of predeterminated voltage, described predeterminated voltage is 1500V.
9. the detection method of cable cracking point according to claim 1, it is characterized in that, described in the moist object of an immersion is provided, described moist object is placed on described cable, and in the step of described removal sheath one end, described moist object is the tabular wet foam that 1cm is thick.
10. the detection method of cable according to claim 1 cracking point, is characterized in that, described in a cable is provided, remove the sheath of described cable one end, detect in the step of described cable whether conducting, described cable line length 1.5m, described cable is lamp cable line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310628087.2A CN104678253A (en) | 2013-11-28 | 2013-11-28 | Detection method for cable cracking point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310628087.2A CN104678253A (en) | 2013-11-28 | 2013-11-28 | Detection method for cable cracking point |
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| Publication Number | Publication Date |
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| CN104678253A true CN104678253A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310628087.2A Pending CN104678253A (en) | 2013-11-28 | 2013-11-28 | Detection method for cable cracking point |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644710A (en) * | 2017-09-20 | 2018-01-30 | 武汉卡米珈科技有限公司 | It is a kind of to monitor the power transmission cable and replacing options for fractureing and seeping water |
| CN108287291A (en) * | 2017-12-28 | 2018-07-17 | 重庆市南方阻燃电线电缆有限公司 | A kind of cable detecting device |
-
2013
- 2013-11-28 CN CN201310628087.2A patent/CN104678253A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644710A (en) * | 2017-09-20 | 2018-01-30 | 武汉卡米珈科技有限公司 | It is a kind of to monitor the power transmission cable and replacing options for fractureing and seeping water |
| CN107644710B (en) * | 2017-09-20 | 2019-04-30 | 武汉卡米珈科技有限公司 | It is a kind of to monitor the power transmission cable and replacing options for fractureing and seeping water |
| CN108287291A (en) * | 2017-12-28 | 2018-07-17 | 重庆市南方阻燃电线电缆有限公司 | A kind of cable detecting device |
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Application publication date: 20150603 |