CN110501370A - A kind of temperature-resistant detection method of cable jacket - Google Patents
A kind of temperature-resistant detection method of cable jacket Download PDFInfo
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- CN110501370A CN110501370A CN201910923295.2A CN201910923295A CN110501370A CN 110501370 A CN110501370 A CN 110501370A CN 201910923295 A CN201910923295 A CN 201910923295A CN 110501370 A CN110501370 A CN 110501370A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0268—Dumb-bell specimens
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Molecular Biology (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Insulated Conductors (AREA)
Abstract
The present invention relates to cables to examine detection technique, the temperature-resistant detection method of especially a kind of cable jacket.The present invention prepares inspection detection circulation card, individual event detection record sheet in advance, cable sample needed for prepared by directiveness and dumbbell test specimen, and distribute according to need at response test equipment, without any confusion, final inspection examining report can be obtained after summarizing in the individual event detection record sheet after testing to test process.The present invention can carry out cable jacket examining detection more integratedly, examine during detecting can standard operation and criterion, so as to effectively improve the detection efficiency of cable jacket temperature-resistant.
Description
Technical field
The present invention relates to cables to examine detection technique, the temperature-resistant detection method of especially a kind of cable jacket.
Background technique
Cable is the general name of the objects such as optical cable, cable, can be used in the transmission of electric power, information, in control installation, connection equipment
When play a key effect.One layer of sheath for insulating wrapped can be arranged in the outermost layer of cable, and sheath is in addition to that can play absolutely
The effect of edge is usually also needed with certain temperature resistance, such as ability of fire prevention, anti-low-temperature impact.It was manufactured in cable
It just needs to carry out the temperature-resistant of cable jacket relevant inspection detection in journey.Currently, the inspection detection of cable jacket is also not
Enough specifications, examining detection project, there is also many not smooth enough places.
Summary of the invention
The object of the present invention is to provide a kind of temperature-resistant detection method of cable jacket, can to cable jacket into
Row examines detection more integratedly, examine during detecting can standard operation and criterion, so as to effectively mention
The detection efficiency of high cable jacket temperature-resistant.
In order to solve the above technical problems, the present invention adopts the following technical scheme that:
A kind of temperature-resistant detection method of cable jacket, comprising the following steps:
S1 obtains several cable samples by fixed length cutting cable, obtains several dumbbells by cutting test piece machine punching cable
Test specimen；
S2 carries out low temperature flexing test, and line taking cable sample and coupon first is placed in constant temperature humidity chamber, constant temperature and humidity
After placing a period of time, cable sample is helically wound around waiting on coupon and returns back to room temperature, visual detection specimen surface should nothing
Obvious crackle side is qualification；
S3 carries out degradation, and dumbbell test specimen is placed in ventilation weatherometer, fresh air in case is kept, through advising
Fixed temperature and time is heated；
S31 carries out hot elongation test to the dumbbell test specimen to bear a heavy burden in weatherometer is placed in, measures dumbbell test specimen through bearing a heavy burden
Elongation after 15 minutes, measurement release the elongation that weight bearing returns back to the dumbbell test specimen of room temperature；It bears a heavy burden at the specified temperature
After 15min, elongation should be not more than 175%, and dumbbell test specimen releases the elongation percentage that weight bearing returns back to the dumbbell test specimen of room temperature
Than 15% should be not more than；
S32 goes to tensile testing machine to the dumbbell test specimen after aging and carries out pull test, obtains extension at break after aging
Variation in tensile strength before and after tensile strength, aging, compares respective material after rate, aging front and back elongation change rate, aging
Whether the extensibility and tensile strength after change rate qualification list deciding aging are qualified；
S4 carries out combustion experiment, in combustion experiment room, cable sample is fixedly installed, cable sample one end is close to fire source, separately
End thereof contacts have burning flag, carry out repeatedly waiting times and equally spaced fire to cable sample by the fire source of combustion experiment room
Flame burning, the degree that observation burning flag is burnt by the intensity of a fire of cable sample vertical spread；
The temperature-resistant detection method of cable jacket above-mentioned, the S2 specifically includes the following steps:
S21, the sample and coupon take two respectively, are tested as two groups；
S22, the style and coupon need to place 16 hours in climatic chamber, wherein the temperature setting of sheath material
For -20 DEG C (± 2 DEG C)
The temperature-resistant detection method of cable jacket above-mentioned, the S32 specifically includes the following steps:
S321, at least four groups of the dumbbell test specimen for pull test, test data is averaged；
S322, the dumbbell test specimen need (23 ± 5) DEG C in the case where answering experimental enviroment to be tested after parking at least 3h, aging
Sample afterwards carries out pull test after parking 16h at ambient temperature；
The temperature-resistant detection method of cable jacket above-mentioned, the S4 specifically includes the following steps:
S41, cable sample are set as 455mm, are vertically fixed on the center of specimen holder in combustion experiment room；
S42 spreads the area that a layer thickness is flat no more than 6mm, horizontal in combustion lamp ambient level and is not less than 305mm wide
The absorbent cotton layer of x355mm long；
The spout of combustion lamp is directed at cable sample by S43, guarantees cable sample by flame active combustion；
The brown paper of one 60 pounds (94g/m2), width 10mm, thickness approximation is arranged in S44, production burning flag
0.1mm, single spreading, burning flag are pasted on cable sample by the way that gluing is wrapped；
S45, to apply, 5 tests are repeated in 15S between 15S, interval inch between flame inch；
S47, should turn off electric switch and gas cylinder main valve after the test, and confirmation is burned with anger without comburant；
S48, criterion: if any primary Shi Huohou in 5 times, the flag on any cable sample burns or burns
25% or more (ignoring cigarette ash or brown the baking part that can be erased with cloth or finger), then cable should be assessed as growing along it
Degree direction propagating flame or any primary Shi Huohou cable sample burn away 60 seconds or more, then cable should be assessed as to attached
Close inflammable substance propagating flame.
The temperature-resistant detection method of cable jacket above-mentioned, further comprising the steps of:
S51 before all on-tests, should first prepare an inspection detection circulation card and several individual events detect record sheet,
It examines on detection circulation card, record needs the project information detected；
S52, according to the project for examining the needs for detecting and showing on circulation card to detect, by cable sample, dumbbell test specimen and list
Item detection record sheet is sent to respectively at constant temperature humidity chamber, weatherometer and combustion experiment room；
S53 detects circulation card all detection record sheets of collection according to examining, and analyzes and obtain final inspection detection report
It accuses.
The temperature-resistant detection method of cable jacket above-mentioned, further comprising the steps of:
S61, any of the above on-test to after half an hour in, be required to open air purifier carry out it is indoor
Air cleaning purifies the toxic and harmful gas of evolution.
Compared with prior art, the invention has the beneficial effects that:
1) present invention can carry out more cable jacket by providing a kind of temperature-resistant detection method of cable jacket
Examine detection integratedly, examine during detection can standard operation and criterion, so as to effectively improve cable
The detection efficiency of sheath temperature resistance；
2) real by carrying out low temperature flexing test, degradation, hot elongation test, pull test and burning to cable jacket
It tests, the performance influenced so as to multiple temperature such as low-temperature resistance, anti-aging, flame resistant on cable jacket is tested detection,
Hence for cable jacket the manufacturing play the role of it is guiding, also can be reduced because sheath it is unqualified caused by do over again, scrap
Situations such as occur；
3) more so as to pass through by the way that in low temperature flexing test and multiple groups subjects are respectively set in degradation
Secondary detection is averaged to obtain more accurately test data；
4) before by carrying out every inspection detection to sheath, an inspection detection circulation card and several individual events detection are prepared
Record sheet, consequently facilitating the cable sample and dumbbell test specimen of preparation respective numbers, and shown on circulation card according to examining to detect
Cable sample, dumbbell test specimen and individual event detection record sheet are sent to constant temperature humidity chamber, aging by the project for needing to detect respectively
At testing machine and combustion experiment room；Circulation card all detection record sheets of collection are detected according to examining, and analyzes and obtains final inspection
Test examining report；
5) by any on-test to after half an hour in, open air purifier carry out indoor air cleaning
Change, purify the toxic and harmful gas of evolution, to purify air, protects staff's health.
Detailed description of the invention
Fig. 1 is flow diagram of the invention.
The present invention is further illustrated with reference to the accompanying drawings and detailed description.
Specific embodiment
The embodiment of the present invention: a kind of temperature-resistant detection method of cable jacket, as shown in Figure 1, comprising the following steps:
S1 obtains several cable samples by fixed length cutting cable, obtains several dumbbells by cutting test piece machine punching cable
Test specimen；
S2 carries out low temperature flexing test, and line taking cable sample and coupon first is placed in constant temperature humidity chamber, constant temperature and humidity
After placing a period of time, cable sample is helically wound around waiting on coupon and returns back to room temperature, visual detection specimen surface should nothing
Obvious crackle side is qualification；
S3 carries out degradation, and dumbbell test specimen is placed in ventilation weatherometer, fresh air in case is kept, through advising
Fixed temperature and time is heated；
S31 carries out hot elongation test to the dumbbell test specimen to bear a heavy burden in weatherometer is placed in, measures dumbbell test specimen through bearing a heavy burden
Elongation after 15 minutes, measurement release the elongation that weight bearing returns back to the dumbbell test specimen of room temperature；It bears a heavy burden at the specified temperature
After 15min, elongation should be not more than 175%, and dumbbell test specimen releases the elongation percentage that weight bearing returns back to the dumbbell test specimen of room temperature
Than 15% should be not more than；
S32 goes to tensile testing machine to the dumbbell test specimen after aging and carries out pull test, obtains extension at break after aging
Variation in tensile strength, the lower list deciding of control are old before and after tensile strength, aging after elongation change rate, aging before and after rate, aging
Whether the extensibility and tensile strength after change are qualified；
S4 carries out combustion experiment, in combustion experiment room, cable sample is fixedly installed, cable sample one end is close to fire source, separately
End thereof contacts have burning flag, carry out repeatedly waiting times and equally spaced fire to cable sample by the fire source of combustion experiment room
Flame burning, the degree that observation burning flag is burnt by the intensity of a fire of cable sample vertical spread；
The temperature-resistant detection method of the cable jacket, the S2 specifically includes the following steps:
S21, the sample and coupon take two respectively, are tested as two groups；
S22, the style and coupon need to place 16 hours in climatic chamber, wherein the temperature setting of sheath material
For -20 DEG C (± 2 DEG C)
The temperature-resistant detection method of the cable jacket, the S32 specifically includes the following steps:
S321, at least four groups of the dumbbell test specimen for pull test, test data is averaged；
S322, the dumbbell test specimen need (23 ± 5) DEG C in the case where answering experimental enviroment to be tested after parking at least 3h, aging
Sample afterwards carries out pull test after parking 16h at ambient temperature；
The temperature-resistant detection method of the cable jacket, the S4 specifically includes the following steps:
S41, cable sample are set as 455mm, are vertically fixed on the center of specimen holder in combustion experiment room；
S42 spreads the area that a layer thickness is flat no more than 6mm, horizontal in combustion lamp ambient level and is not less than 305mm wide
The absorbent cotton layer of x355mm long；
The spout of combustion lamp is directed at cable sample by S43, guarantees cable sample by flame active combustion；
The brown paper of one 60 pounds (94g/m2), width 10mm, thickness approximation is arranged in S44, production burning flag
0.1mm, single spreading, burning flag are pasted on cable sample by the way that gluing is wrapped；
S45, to apply, 5 tests are repeated in 15S between 15S, interval inch between flame inch；
S47, should turn off electric switch and gas cylinder main valve after the test, and confirmation is burned with anger without comburant；
S48, criterion: if any primary Shi Huohou in 5 times, the flag on any cable sample burns or burns
25% or more (ignoring cigarette ash or brown the baking part that can be erased with cloth or finger), then cable should be assessed as growing along it
Degree direction propagating flame or any primary Shi Huohou cable sample burn away 60 seconds or more, then cable should be assessed as to attached
Close inflammable substance propagating flame.
The temperature-resistant detection method of the cable jacket, further comprising the steps of:
S51 before all on-tests, should first prepare an inspection detection circulation card and several individual events detect record sheet,
It examines on detection circulation card, record needs the project information detected；
S52, according to the project for examining the needs for detecting and showing on circulation card to detect, by cable sample, dumbbell test specimen and list
Item detection record sheet is sent to respectively at constant temperature humidity chamber, weatherometer and combustion experiment room；
S53 detects circulation card all detection record sheets of collection according to examining, and analyzes and obtain final inspection detection report
It accuses.
The temperature-resistant detection method of the cable jacket, further comprising the steps of:
S61, any of the above on-test to after half an hour in, be required to open air purifier carry out it is indoor
Air cleaning purifies the toxic and harmful gas of evolution.
The present invention can carry out cable jacket to examine detection more integratedly, can standardize during examining detection
Operation and criterion, so as to effectively improve the detection efficiency of cable jacket temperature-resistant.The present invention is by protecting cable
Set carries out low temperature flexing test, degradation, hot elongation test, pull test and combustion experiment, so as to cable jacket
The performance that influences of multiple temperature such as low-temperature resistance, anti-aging, flame resistant test detection, hence for the production of cable jacket
Manufacture play the role of it is guiding, also can be reduced because sheath it is unqualified caused by do over again, scrap situations such as appearance；
By the way that in low temperature flexing test and multiple groups subjects are respectively set in degradation, so as to by multiple
Detect or be averaged to obtain more accurately test data；
Before carrying out every inspection detection to sheath, an inspection detection circulation card and several individual events detection note are prepared
Table is recorded, consequently facilitating the cable sample and dumbbell test specimen of preparation respective numbers, and the need shown on circulation card are detected according to inspection
The project to be detected, by cable sample, dumbbell test specimen and individual event detection record sheet are sent to constant temperature humidity chamber respectively, aging tries
It tests at machine and combustion experiment room；Circulation card all detection record sheets of collection are detected according to examining, and analyzes and obtains final inspection
Examining report；
By any on-test to after half an hour in, open air purifier carry out indoor air purification,
The toxic and harmful gas of evolution is purified, to purify air, protects staff's health.
Claims (6)
1. a kind of temperature-resistant detection method of cable jacket, which comprises the following steps:
S1 obtains several cable samples by fixed length cutting cable, obtains several dumbbells examinations by cutting test piece machine punching cable
Part；
S2 carries out low temperature flexing test, and line taking cable sample and coupon first is placed in constant temperature humidity chamber, and constant temperature and humidity is placed
After a period of time, cable sample is helically wound around waiting on coupon and returns back to room temperature, visual detection specimen surface should be without obvious
Crackle side is qualification；
S3 carries out degradation, and dumbbell test specimen is placed in ventilation weatherometer, fresh air in case is kept, through providing it
Temperature and time is heated；
S31 carries out hot elongation test to the dumbbell test specimen to bear a heavy burden in weatherometer is placed in, and measurement dumbbell test specimen is through 15 points of weight bearing
Elongation after clock, measurement release the elongation that weight bearing returns back to the dumbbell test specimen of room temperature；Bear a heavy burden 15min at the specified temperature
Afterwards, elongation should be not more than 175%, and the elongation percentage that dumbbell test specimen releases the dumbbell test specimen that weight bearing returns back to room temperature should not
Greater than 15%；
S32 goes to tensile testing machine to the dumbbell test specimen after aging and carries out pull test, obtains elongation at break after aging, old
Variation in tensile strength before and after tensile strength, aging, compares the change rate of respective material after change front and back elongation change rate, aging
Whether the extensibility and tensile strength after qualified list deciding aging are qualified；
S4 carries out combustion experiment, in combustion experiment room, cable sample is fixedly installed, cable sample one end is close to fire source, the other end
Contact has burning flag, carries out repeatedly times and equally spaced flame being waited to fire to cable sample by the fire source of combustion experiment room
It burns, the degree that observation burning flag is burnt by the intensity of a fire of cable sample vertical spread.
2. the temperature-resistant detection method of cable jacket according to claim 1, which is characterized in that the S2 is specifically included
Following steps:
S21, the sample and coupon take two respectively, are tested as two groups；
S22, the style and coupon need to be placed 16 hours in climatic chamber, and wherein the temperature setting of sheath material is -20
℃(±2℃)。
3. the temperature-resistant detection method of cable jacket according to claim 1, which is characterized in that the S32 is specifically wrapped
Include following steps:
S321, at least four groups of the dumbbell test specimen for pull test, test data is averaged；
S322, the dumbbell test specimen needs (23 ± 5) DEG C in the case where answering experimental enviroment to be tested after parking at least 3h, after aging
Sample carries out pull test after parking 16h at ambient temperature.
4. the temperature-resistant detection method of cable jacket according to claim 1, which is characterized in that the S4 is specifically included
Following steps:
S41, cable sample are set as 455mm, are vertically fixed on the center of specimen holder in combustion experiment room；
S42 spreads the area that a layer thickness is flat no more than 6mm, horizontal in combustion lamp ambient level and is not less than 305mm wide x355mm
Long absorbent cotton layer；
The spout of combustion lamp is directed at cable sample by S43, guarantees cable sample by flame active combustion；
S44, production burning flag, is arranged 60 pounds of (94g/m2) brown paper, width 10mm, thickness approximation 0.1mm,
Single spreading, burning flag are pasted on cable sample by the way that gluing is wrapped；
S45, to apply, 5 tests are repeated in 15S between 15S, interval inch between flame inch；
S46, should turn off electric switch and gas cylinder main valve after the test, and confirmation is burned with anger without comburant；
S47, criterion: if any primary Shi Huohou in 5 times, the flag on any cable sample burns or burns 25%
It (ignores the cigarette ash or brown that can be erased with cloth or finger baking part) above, then should be assessed as can side along its length for cable
It burns away 60 seconds or more to propagating flame or any primary Shi Huohou cable sample, then cable should be assessed as to neighbouring
Inflammable substance propagating flame.
5. the temperature-resistant detection method of cable jacket according to claim 1, which is characterized in that further include following step
It is rapid:
S51 before all on-tests, should first prepare an inspection detection circulation card and several individual events detect record sheet, examine
On detection circulation card, record needs the project information detected；
S52 examines cable sample, dumbbell test specimen and individual event according to the project for examining the needs for detecting and showing on circulation card to detect
Record sheet is surveyed to be sent to respectively at constant temperature humidity chamber, weatherometer and combustion experiment room；
S53 detects circulation card all detection record sheets of collection according to examining, and analyzes and obtain final inspection examining report.
6. the temperature-resistant detection method of cable jacket according to claim 1, which is characterized in that further include following step
It is rapid: S61, any of the above on-test to after half an hour in, be required to open air purifier carry out room air
Purification, purifies the toxic and harmful gas of evolution.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910923295.2A CN110501370A (en) | 2019-09-27 | 2019-09-27 | A kind of temperature-resistant detection method of cable jacket |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910923295.2A CN110501370A (en) | 2019-09-27 | 2019-09-27 | A kind of temperature-resistant detection method of cable jacket |
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| CN110501370A true CN110501370A (en) | 2019-11-26 |
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| CN201910923295.2A Pending CN110501370A (en) | 2019-09-27 | 2019-09-27 | A kind of temperature-resistant detection method of cable jacket |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907291A (en) * | 2019-12-05 | 2020-03-24 | 芜湖航天特种电缆厂股份有限公司 | Insulation and sheath low-temperature winding test method |
| CN114184488A (en) * | 2021-12-01 | 2022-03-15 | 中海石油(中国)有限公司 | Method for rapidly testing service life of optical cable of oil well |
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| CN104995693A (en) * | 2013-10-09 | 2015-10-21 | 住友电气工业株式会社 | Halogen-free flame-retardant insulated wire and halogen-free flame-retardant insulated tube |
| CN104183305A (en) * | 2014-08-26 | 2014-12-03 | 山东华凌电缆有限公司 | Electric wire and cable for high-speed train and production method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907291A (en) * | 2019-12-05 | 2020-03-24 | 芜湖航天特种电缆厂股份有限公司 | Insulation and sheath low-temperature winding test method |
| CN114184488A (en) * | 2021-12-01 | 2022-03-15 | 中海石油(中国)有限公司 | Method for rapidly testing service life of optical cable of oil well |
| CN114184488B (en) * | 2021-12-01 | 2024-01-30 | 中海石油(中国)有限公司 | Quick testing method for service life of optical cable of oil well |
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