CN211148284U - Submarine cable tensile test device - Google Patents
Submarine cable tensile test device Download PDFInfo
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- CN211148284U CN211148284U CN201921948645.2U CN201921948645U CN211148284U CN 211148284 U CN211148284 U CN 211148284U CN 201921948645 U CN201921948645 U CN 201921948645U CN 211148284 U CN211148284 U CN 211148284U
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Abstract
The utility model relates to an experimental technical field of submarine cable discloses a submarine cable tensile test device, including horizontal tensile test machine, horizontal tensile test machine's application of force end and atress end all are equipped with tensile anchor clamps, and two tensile anchor clamps are used for the fixed both ends of being tested the submarine cable, install two optic fibre fixing device on the horizontal tensile test machine, and two optic fibre fixing device are close to horizontal tensile test machine's application of force end and atress end respectively, and optic fibre fixing device is the unidirectional rotation wheel, is fixed with optic fibre stress-strain tester on the horizontal tensile test machine. The device is used for carrying out tensile test on the submarine cable, so that the tension effect of the submarine cable in the construction process can be simulated in a detection chamber, and the tensile property of the submarine cable can be detected. And the optical fiber fixing device in the device is designed to rotate in one direction, so that the optical fiber can be prevented from longitudinally sliding in the stretching process, the optical fiber is stressed along the stretching direction in the stretching process, the distortion of a test result is avoided, and the accuracy of the stretching result is improved.
Description
Technical Field
The utility model relates to a submarine cable test technical field especially relates to a submarine cable tensile test device.
Background
The submarine cable sequentially comprises an armor layer on the outermost layer, at least one steel wire layer, an insulating layer, a shielding layer and optical fibers on the innermost layer from outside to inside. The submarine cables stretched in the construction process comprise various submarine cables including submarine communication optical cables and submarine photoelectric composite cables, submarine cables with soft and hard joints and joint boxes thereof, submarine cables with repeaters, submarine photoelectric composite cables with soft and hard joints and joint boxes thereof and various related underwater facilities. The barrier action of reefs or ship anchors and the like in the construction process of the submarine cable can be under the action of tension, so that the submarine cable bears certain tensile load and has important influence on the optical fiber of the submarine cable, and therefore, the research on the submarine cable tensile test has important significance on the change of various performance parameters of the submarine cable optical fiber. The verification of the tensile property of the submarine cable or the submarine cable with various underwater facilities is an important link for ensuring the work of the submarine cable and the underwater facilities thereof. The submarine cable is relatively complex in the construction process and is influenced by various reasons, so that how to accurately test the relevant performance parameter indexes of the submarine cable or the submarine cable with various underwater facilities in the tensile test has important research significance, and relevant standards at home and abroad are not mentioned in detail. The tensile property of the submarine cable or the submarine cable with various underwater facilities has important influence on the construction requirement, the service life and the stability of photoelectric performance parameters of the submarine cable, and if all relevant parameters of the submarine cable or the submarine cable with various underwater facilities in a tensile test can be accurately and scientifically obtained, the method has great value for the design, research, development, production, application, maintenance and repair of the submarine cable and various corresponding underwater facilities.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of above-mentioned prior art, the utility model provides a submarine cable tensile test device, it can accurately carry out the tensile test to submarine cable or the submarine cable that has various facilities under water, obtains submarine cable tensile test data.
The utility model provides a technical scheme that its technical problem adopted does:
the utility model provides a submarine cable tensile test device, includes horizontal tensile testing machine, horizontal tensile testing machine's application of force end and atress end all are equipped with tensile anchor clamps, and two tensile anchor clamps are used for the fixed both ends of being tested the submarine cable, install two optic fibre fixing device on the horizontal tensile testing machine, two optic fibre fixing device are close to horizontal tensile testing machine's application of force end and atress end respectively, optic fibre fixing device is the unidirectional rotation wheel, be fixed with optic fibre stress-strain tester on the horizontal tensile testing machine.
As an improvement of the technical scheme, the optical fiber fixing device comprises a support, a wheel shaft and a guide wheel, wherein the support, the wheel shaft and the guide wheel are arranged on the horizontal tensile testing machine, the wheel shaft is fixedly arranged on the support in a penetrating mode, and the guide wheel is movably sleeved on the wheel shaft.
As an improvement of the technical scheme, a one-way bearing is arranged between the wheel shaft and the guide wheel, and the wheel shaft and the guide wheel are fixedly connected with the one-way bearing.
As an improvement of the technical scheme, the guide wheel comprises a ring body arranged on the wheel shaft and blocking pieces arranged at two ends of the ring body.
As an improvement of the technical scheme, the outer diameter of the ring body is 60mm-200 mm.
As an improvement of the technical scheme, the stretching clamp sequentially comprises an outer taper sleeve, at least one positioning groove taper and a core rod from outside to inside, the positioning groove taper is provided with a plurality of positioning grooves along the outer circumference, and the center of the core rod is provided with a core hole along the axial direction.
As an improvement of the technical scheme, the outer taper sleeve is in a circular truncated cone shape, a first through hole is axially formed in the outer taper sleeve, and the first through hole is in a circular truncated cone shape.
As an improvement of the technical scheme, the positioning groove cone is in a circular truncated cone shape, a second through hole is axially formed in the positioning groove cone, and the second through hole is in a circular truncated cone shape.
The beneficial effects of the utility model are that:
the optical fiber fixing device in the submarine cable tensile test device is designed to rotate in one direction, so that the longitudinal sliding of the optical fiber in the tensile process can be prevented, the optical fiber is stressed along the tensile direction in the tensile process, the final test result is influenced by the stress state of the optical fiber, the distortion of the test result caused by the existence of the optical fiber fixing device can be avoided, and the accuracy of the tensile result can be improved. The device is used for carrying out tensile test on the submarine cable, so that the tension effect on the submarine cable and underwater facilities connected with the submarine cable in the construction process can be simulated in a detection chamber, the change of the tensile property of the submarine cable is detected, and relatively accurate test data and scientific basis for later improvement and optimization are provided for design, research, production, application, maintenance and repair of the submarine cable and various underwater facilities.
Drawings
The present invention will be further described with reference to the accompanying drawings and specific embodiments, wherein:
fig. 1 is a schematic structural view of an optical fiber fixing device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a guide wheel according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a structure in which submarine cables are tested separately according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a submarine cable with underwater equipment according to an embodiment of the present invention under test;
fig. 5 is a schematic end face structure diagram of the stretching jig in the embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view taken along line A-A of FIG. 5;
fig. 7 is a schematic structural diagram of a connection part of the tensile clamp and the horizontal tensile testing machine in the embodiment of the present invention.
Detailed Description
Referring to fig. 1-4, the utility model discloses a submarine cable tensile test device, including horizontal tensile testing machine 1, horizontal tensile testing machine 1's application of force end and atress end all are equipped with tensile anchor clamps 5, and two tensile anchor clamps 5 are used for the fixed both ends of being tested submarine cable 4, install two optic fibre fixing device 2 on horizontal tensile testing machine 1, two optic fibre fixing device 2 are close to horizontal tensile testing machine 1's application of force end and atress end respectively, optic fibre fixing device is the unidirectional rotation wheel, be fixed with optic fibre stress-strain tester 3 on the horizontal tensile testing machine 1.
Wherein, the parts of the two ends of the tested submarine cable stripped of the armor layer are arranged on the stretching clamp 5, one part of the optical fiber stripped from the two ends of the tested submarine cable is wound on the optical fiber fixing device 2, and the rest optical fiber is in a free state. The optical fiber fixing device 2 is designed for increasing the accuracy of a stretching result, is designed to rotate in a single direction, and is designed for preventing the optical fiber from sliding longitudinally in the stretching process, so that the optical fiber is stressed along the stretching direction in the stretching process, and the existence of the optical fiber fixing device 2 can avoid the distortion of a test result due to the stress state of the optical fiber which influences the final test result. If designed bi-directionally, the fiber cannot be effectively fixed, causing data distortion.
Specifically, the optical fiber fixing device 2 comprises a support 21 arranged on the horizontal tensile testing machine 1, an axle 22 and a guide wheel 23, the axle 22 is fixedly arranged on the support 21 in a penetrating manner, and the guide wheel 23 is movably sleeved on the axle 22. A one-way bearing 24 is arranged between the wheel shaft 22 and the guide wheel 23, and both the wheel shaft 22 and the guide wheel 23 are fixedly connected with the one-way bearing 24. The outer ring of the one-way bearing 24 is in interference fit with the guide wheel 23, the inner ring of the one-way bearing 24 and the wheel shaft 22 are both provided with key slots 25 along the axial direction, and the inner ring of the one-way bearing 24 is connected with the wheel shaft 22 through a flat key 26. The guide wheel 23 includes a ring 231 disposed on the axle 22 and blocking pieces 232 disposed at two ends of the ring 231. The outer surface of the ring body 231 is used for winding the optical fiber.
Further, the outer diameter of the ring body 231 is 60mm to 200 mm. The ring 231 has an excessively large outer diameter, which causes inconvenience in use and waste of samples, because the larger the diameter, the more optical fibers need to be wound; the outer diameter of the ring 231 is too small, resulting in a small bending radius of the optical fiber, and the optical fiber wound around the fixture is liable to adversely affect the final test results.
Referring to fig. 5 to 6, the tensile clamp 5 sequentially includes an outer taper sleeve 51, at least one positioning groove taper 52 and a core rod 53 from outside to inside, the positioning groove taper 52 is provided with a plurality of positioning grooves 521 along an outer circumference, steel wires in the submarine cable can be clamped in the positioning grooves 521, a core hole 531 is axially provided in the center of the core rod 53, an optical fiber of the submarine cable can pass through the core hole 531, and the core hole 531 can protect the optical fiber.
Further, the outer taper sleeve 51 is in a circular truncated cone shape, the outer taper sleeve 51 is provided with a first through hole along the axial direction, the first through hole is in a circular truncated cone shape, and the inclination directions of the outer side surface and the inner side surface of the outer taper sleeve 51 are the same. The positioning groove cone 52 is in a circular truncated cone shape, a second through hole is axially formed in the positioning groove cone 52, the second through hole is in a circular truncated cone shape, and the inclination directions of the outer side face and the inner side face of the positioning groove cone 52 are the same. The cross section of the positioning groove 521 is a part of a circle, and the positioning groove 521 axially penetrates through the positioning groove cone 52. The conical angle of the detent cone 52 is equal to the conical angle of the first through-hole, and the minimum diameter of the first through-hole is smaller than the maximum outer diameter of the detent cone 52. The mandrel 53 has a truncated cone shape.
If there is only one positioning groove cone 52, the taper angle of the second through hole is equal to the taper angle of the mandrel 53, and the minimum diameter of the second through hole is smaller than the maximum outer diameter of the mandrel 53. If the number of the detent cones 52 is two or more, the minimum diameter of the second through hole on the outer detent cone 52 is smaller than the maximum outer diameter of the inner detent cone 52, the taper angle of the second through hole on the innermost detent cone 52 is equal to the taper angle of the mandrel 53, and the minimum diameter of the second through hole on the innermost detent cone 52 is smaller than the maximum outer diameter of the mandrel 53.
Specifically, the optical fiber of the submarine cable is passed through the core hole 531 from the small end of the core rod 53 and passed out from the large end of the core rod 53, and the large end of the second through hole of the positioning funnel 52 is moved from the small end of the core rod 53 to the large end of the core rod 53 and is tightly sleeved. Similarly, the steel wire of the submarine cable passes through the positioning slot 521 from the small end of the positioning slot cone 52 and passes out from the large end of the positioning slot cone 52, the large end of the first through hole on the outer cone sleeve 51 moves from the small end of the positioning slot cone 52 to the large end of the positioning slot cone 52 and is tightly sleeved, or the large end of the second through hole on the outer positioning slot cone 52 moves from the small end of the inner positioning slot cone 52 to the large end of the positioning slot cone 52 and is tightly sleeved.
And referring to fig. 7, the force application end and the force bearing end of the horizontal tensile testing machine 1 are both provided with a pin plate 11, the pin plate 11 is connected with the horizontal tensile testing machine 1 through a bolt 12, the pin plate 11 is provided with a third through hole, the third through hole is in a circular truncated cone shape, the conical angle of the outer taper sleeve 51 of the tensile fixture 5 is equal to that of the third through hole, and the minimum diameter of the third through hole is smaller than the maximum outer diameter of the outer taper sleeve 51. During the use, the cotter 11 cover is on tensile anchor clamps 5, specifically say, the main aspects of the third through-hole removes and the cover is tight from the tip of outer taper sleeve 51 to the main aspects of outer taper sleeve 51, and horizontal tensile testing machine 1 is to the direction of the application of force of cotter 11 for the tip to the main aspects along the third through-hole, and when horizontal tensile testing machine 1 applied the pulling force to tensile anchor clamps 5 through cotter 11 like this, outer taper sleeve 51 and constant head tank awl 52 were to the pressure of the steel wire of submarine cable more and more big, and it is more tight that to pull the submarine cable after tensile anchor clamps 5 atress promptly.
Specifically, the method for performing the submarine cable tensile test by using the device comprises the following steps:
s01, stripping the optical fibers 41 at two ends of the tested submarine cable 4, and stripping a length of armor layer; the stripped optical fiber 41 has a length of 0.9m to 1.1m, and the stripped armor has a length of 70cm to 90 cm.
S02, fixing the parts of the two ends of the tested submarine cable 4, which are stripped of the armor layers, on the tensile clamps 5 of the force application end and the force bearing end of the horizontal tensile testing machine 1 respectively; both ends of the submarine cable are fitted with the stretching jigs 5 according to the structure of the stretching jigs 5.
S03, winding the optical fiber 41 at one end of the tested submarine cable 4 on the guide wheel 23 of one optical fiber fixing device 2, and connecting the optical fiber 41 at one end of the tested submarine cable 4 in series;
s04, winding the optical fiber 41 at the other end of the tested submarine cable 4 on the guide wheel 23 of the other optical fiber fixing device 2, and connecting the optical fiber 41 at the other end of the tested submarine cable 4 in series with the optical fiber at the input end of the optical fiber stress-strain tester 3;
s05, starting the horizontal tensile testing machine 1 and the optical fiber stress-strain tester 3;
and S06, monitoring and testing various tensile performance parameter indexes of the tested submarine cable through the optical fiber stress-strain tester 3 in the process of applying tensile loading load, the process of unloading load and the process of unloading load on the submarine cable by the horizontal tensile testing machine 1. The optical fiber stress-strain tester 3 is a prior art and is mainly used for monitoring the change of optical fiber performance indexes of the tested submarine cable 4 in the stretching process, and the data can be displayed through a display screen graph of the device. The optical fiber is connected into a loop through the optical fiber stress-strain tester, and various parameters can be monitored after the setting by using software in the instrument.
The tested submarine cables comprise various submarine cables including submarine communication optical cables and submarine photoelectric composite cables, and further comprise submarine cables with soft and hard joints and joint boxes, submarine cables with repeaters, submarine photoelectric composite cables with soft and hard joints, joint boxes and other related various facilities. The length of the submarine cable to be tested is 45m-55m, and in the embodiment, the length of the submarine cable to be tested is 50 m.
Further, in steps S03 and S04, the number of turns of the optical fiber wound around the guide pulley 23 is 1 to 100. Specifically, when the outer diameter of the ring 231 is 60mm-100mm, the optical fiber is wound on the guide wheel 23 in 1-25 turns to perform a submarine cable tensile test; when the outer diameter of the ring body 231 is 100mm-150mm, the optical fiber is wound on the guide wheel 23 in 25-50 circles to perform a submarine cable tensile test; when the outer diameter of the ring body 231 is 150mm-200mm, the optical fiber is wound on the guide wheel 23 in 50-100 turns to perform a submarine cable tensile test. The number of winding turns covers the number of turns normally used, the main purpose of winding the optical fiber on the guide wheel 23 is to fix the optical fiber and prevent the optical fiber from slipping during stretching, the number of winding turns exceeds 100 turns, which is theoretically feasible, but causes the optical fiber waste.
Moreover, according to the corresponding standards, it can be observed on the optical fiber stress-strain tester 3 whether the optical fiber meets the following tensile indexes at different tensile stages in the test process: 1 the additional attenuation of the optical fiber at different stretching stages is within a specified range; 2 the optical fiber should be within the specified range. Whether the optical fiber is qualified or not can be judged according to the two indexes.
The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should be all included in the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.
Claims (8)
1. The utility model provides a submarine cable tensile test device which characterized in that: including horizontal tensile testing machine (1), the application of force end and the atress end of horizontal tensile testing machine (1) all are equipped with tensile anchor clamps (5), and two tensile anchor clamps (5) are used for the fixed both ends of being tested submarine cable (4), install two optic fibre fixing device (2) on horizontal tensile testing machine (1), two optic fibre fixing device (2) are close to the application of force end and the atress end of horizontal tensile testing machine (1) respectively, optic fibre fixing device is the unidirectional rotation wheel, be fixed with optic fibre stress-strain tester (3) on horizontal tensile testing machine (1).
2. A submarine cable tensile test apparatus according to claim 1, wherein: the optical fiber fixing device (2) comprises a support (21) arranged on the horizontal tensile testing machine (1), an axle (22) and a guide wheel (23), the axle (22) fixedly penetrates through the support (21), and the guide wheel (23) is movably sleeved on the axle (22).
3. A submarine cable tensile test apparatus according to claim 2, wherein: a one-way bearing (24) is arranged between the wheel shaft (22) and the guide wheel (23), and the wheel shaft (22) and the guide wheel (23) are fixedly connected with the one-way bearing (24).
4. A submarine cable tensile test apparatus according to claim 2, wherein: the guide wheel (23) comprises a ring body (231) arranged on the wheel shaft (22) and blocking pieces (232) arranged at two ends of the ring body (231).
5. A submarine cable tensile test device according to claim 4, characterized in that: the outer diameter of the ring body (231) is 60mm-200 mm.
6. A submarine cable tensile test apparatus according to claim 1, wherein: the drawing fixture (5) sequentially comprises an outer taper sleeve (51), at least one positioning groove cone (52) and a core rod (53) from outside to inside, the positioning groove cone (52) is provided with a plurality of positioning grooves (521) along the outer circumference, and the center of the core rod (53) is provided with a core hole (531) along the axial direction.
7. A submarine cable tensile test device according to claim 6, characterized in that: the outer taper sleeve (51) is in a circular truncated cone shape, a first through hole is axially formed in the outer taper sleeve (51), and the first through hole is in a circular truncated cone shape.
8. A submarine cable tensile test apparatus according to claim 6 or 7, wherein: the positioning groove cone (52) is in a circular truncated cone shape, a second through hole is formed in the positioning groove cone (52) in the axial direction, and the second through hole is in a circular truncated cone shape.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921948645.2U CN211148284U (en) | 2019-11-12 | 2019-11-12 | Submarine cable tensile test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921948645.2U CN211148284U (en) | 2019-11-12 | 2019-11-12 | Submarine cable tensile test device |
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| CN211148284U true CN211148284U (en) | 2020-07-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763564A (en) * | 2019-11-12 | 2020-02-07 | 烽火海洋网络设备有限公司 | Submarine cable tensile test device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763564A (en) * | 2019-11-12 | 2020-02-07 | 烽火海洋网络设备有限公司 | Submarine cable tensile test device and method |
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