CN204116128U - A kind of tension-torsion coupling stiffness proving installation - Google Patents
A kind of tension-torsion coupling stiffness proving installation Download PDFInfo
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- CN204116128U CN204116128U CN201420517416.6U CN201420517416U CN204116128U CN 204116128 U CN204116128 U CN 204116128U CN 201420517416 U CN201420517416 U CN 201420517416U CN 204116128 U CN204116128 U CN 204116128U
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- 238000005859 coupling reaction Methods 0.000 title claims abstract description 24
- 238000009434 installation Methods 0.000 title claims abstract description 15
- 238000005096 rolling process Methods 0.000 claims abstract description 25
- 238000012360 testing method Methods 0.000 abstract description 13
- 238000003556 assay Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000001052 transient effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
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- 238000005457 optimization Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
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- 238000013461 design Methods 0.000 description 1
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Abstract
The utility model discloses a kind of tension-torsion coupling stiffness proving installation, comprise horizontal stand, described horizontal stand is placed with sample, described sample is provided with extensometer, one end of described sample is connected with stretching clamp, and described stretching clamp is connected with puller system by torque sensor, and the other end of described sample is connected with rolling clamp, described rolling clamp is provided with angular instrument, and described rolling clamp freely rotates or is driven by the electric rotating machine installed and rotates.The pulling force that this proving installation is subject to by test sample, moment of torsion, deflection and the anglec of rotation, by computer recording transient assays curve, the tension-torsion coupling stiffness value of sample can be obtained very easily, simple equipments, easy to operate, and measure accurately, effectively can carry out the test of tension-torsion coupling stiffness, and extend to the stiffness measurement of similar structures.
Description
Technical field
The utility model belongs to off-shore pipeline systems axiol-ogy technology, especially relates to a kind of extra large cable, umbilical cables, tension-torsion coupling stiffness proving installation and the methods such as marine flexible pipeline.
Background technology
Along with the input energetically to oceanographic engineering, the off-shore pipeline systems such as extra large cable, umbilical cables and seabed flexible duct obtain development energetically.Sea cable, umbilical cables and seabed flexible duct, as subsea production system or the important equipment that is connected between subsea production system with attached body waterborne, play a significant role in energy, information, material Transfer.And ocean rugged environment also proposes higher requirement to the performance of off-shore pipeline system.
In installation and operation process, extra large cable, umbilical cables and seabed flexible duct etc. can be stretched and the effect of torsional load under the effect of the environmental loads such as wave ocean current.Sea is most between cable, umbilical cables and each component of seabed flexible duct adopts non-adherent spiral winding result, and therefore stretch and there is coupled relation between twisting action, namely stretching action usually occurs along with torsion, and twisting motion stretching along with extra large cable.Extreme stretching and twisting action produce impact greatly to the performance of off-shore pipeline system, even cause performance failure.In order to ensure the normal work of off-shore pipeline system, to ensure that in its design process its rigidity meets certain requirement.
Due to the complicacy of structure and non-linear, as the important indicator evaluating extra large cable, umbilical cables and marine flexible pipeline system, very large deficiency is still had to the understanding of tension-torsion coupling stiffness, also lacks unified tension-torsion coupling stiffness testing standard, test unit and method at present.
Utility model content
Utility model object: the utility model is for testing extra large cable at present, the deficiency of the off-shore pipeline system tension-torsion coupling stiffness test aspects such as umbilical cables and seabed flexible duct, design one intuitively, the extra large cable that test data is accurate and easy to use, the tension-torsion coupling stiffness proving installation of the off-shore pipeline systems such as umbilical cables and seabed flexible duct and corresponding method of testing.
Technical scheme: a kind of tension-torsion coupling stiffness proving installation described in the utility model, comprise horizontal stand, described horizontal stand is placed with sample, described sample is provided with extensometer, one end of described sample is connected with stretching clamp, described stretching clamp is connected with puller system by torque sensor, and the other end of described sample is connected with rolling clamp, and described rolling clamp is provided with angular instrument.
As optimization, described rolling clamp is connected with electric rotating machine, and described rolling clamp is connected with bearing with electric rotating machine.
As preferably, described sample is the off-shore pipelines such as extra large cable, umbilical cables or marine flexible pipeline.
As optimization, described rolling clamp freely rotates or is driven by electric rotating machine and rotates.
As optimization, the puller system in this device, torque sensor, extensometer, angular instrument are all connected with computing machine with electric rotating machine.
Beneficial effect: the pulling force that this proving installation is subject to by test sample, moment of torsion, deflection and the anglec of rotation, by computer recording transient assays curve, the tension-torsion coupling stiffness value of sample can be obtained easily, simple equipments, easy to operate, and measure accurately, effectively can carry out the test of tension-torsion coupling stiffness, and extend to the stiffness measurement of similar structures.
Accompanying drawing explanation
Fig. 1 is mounting structure schematic diagram of the present utility model.
Embodiment
A kind of tension-torsion coupling stiffness proving installation as shown in Figure 1, comprises puller system 1, torque sensor 2, stretching clamp 3, extensometer 4, angular instrument 5, rolling clamp 6, electric rotating machine 7, bearing 8 and horizontal stand 10 and forms.Puller system 1 is connected with stretching clamp 3 by torque sensor 2.The stretching clamp 3 non-rotatable motion of stretching motion only.Sample 9(sea cable, umbilical cables or marine flexible pipeline etc.) be placed on horizontal stand 10, the extensometer 4 of test sample 9 deflection is installed above.Sample 9 two ends are connected with rolling clamp 6 with stretching clamp 3 respectively.Rolling clamp 6 rotatable movement but non-telescoping motion, rolling clamp 6 is provided with angular instrument 5, can measures the anglec of rotation of rolling clamp.Control the motion of rolling clamp 6 by electric rotating machine 7, rolling clamp 6 also can be made to be separated with electric rotating machine 7, rotating clamp is rotated freely.Electric rotating machine 7 is connected with bearing 8 with rolling clamp.In test process, regulate the height of horizontal stand 10, ensure that sample is in horizontality all the time.Puller system 1, torque sensor 2, extensometer 4, angular instrument 5 are all connected with computing machine with electric rotating machine 7.
Concrete test philosophy and method of testing as follows:
For elongated flexible body such as extra large cable, umbilical cables and marine flexible pipelines, be coupled when stretching and reverse, its kinetics equation is
Wherein F is pulling force, and M is for applying moment of torsion, K
11for tensible rigidity, K
22for torsional rigidity, K
12, K
21for tension-torsion coupling stiffness, Δ L is the deflection of cable, and Δ is the anglec of rotation, and L is the total length of sample.In order to obtain coupling stiffness K
12and K
21, first need measurement to obtain tensible rigidity K
11with torsional rigidity K
22.From above-mentioned equation, when sample two ends are fixed, namely during Δ=0, tensible rigidity K can be obtained by tensile force f and deflection Δ L
11; When sample keeps drift, torsional rigidity K can be obtained by moment of torsion M and anglec of rotation Δ
22.Concrete method of testing is as follows:
1, rolling clamp 6 is affixed with sample 9, and ensures that rolling clamp 6 keeps motionless, and by puller system 1 drawn samples 9, pulling force is linearly increased to a fixed value F, the sample deformations amount x that the value of thrust F exported by computer acquisition puller system 1 and extensometer 4 are measured.The tensible rigidity then calculating sample is K
11=FL/x, or by numerical fitting F ~ x/L curve, obtain its slope and be K
11;
2, sample 9 kept natural length L and do not apply pulling force, applying moment of torsion M, obtained the anglec of rotation of sample by angular instrument 5, then can obtain the change curve of moment of torsion M with the anglec of rotation by electric rotating machine 7 pairs of samples 9, then the torsional rigidity calculating sample is K
22=ML/, or by numerical fitting M ~/L curve, obtain its slope and be K
22;
3, rolling clamp 6 is kept to be separated with electric rotating machine 7, in can free rotation state, the puller system 1 pair of sample 9 applies fixing tensile force f, obtains the deflection y of sample and be θ by the anglec of rotation that angular instrument 5 obtains sample 9 by extensometer 4, then sample tension-torsion coupling stiffness is K
12=FL/ θ-yK
11/ θ, or obtain K by numerical fitting
12;
4, keep rolling clamp 6 and sample 9 affixed, puller system 1 pair of sample applies fixing force value F and keeps, by electric rotating machine 7 torsion sample 9, be deformed into z and be ψ by angular instrument 5 working sample rotational angle by extensometer 4 working sample 9, then the tension-torsion coupling stiffness of sample is K
21=ML/z-ψ K
22/ z, or obtain K by numerical fitting
21.
By the pulling force that above-mentioned test sample is subject to, moment of torsion, deflection and the anglec of rotation, finally by computer recording transient assays curve, can obtain the tension-torsion coupling stiffness value of sample very easily.
Above-described specific embodiment; the technical scheme of the utility model patent and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model patent; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a tension-torsion coupling stiffness proving installation, it is characterized in that: comprise horizontal stand (10), described horizontal stand (10) is placed with sample (9), described sample (9) is provided with extensometer (4), one end of described sample (9) is connected with stretching clamp (3), described stretching clamp (3) is connected with puller system (1) by torque sensor (2), the other end of described sample (9) is connected with rolling clamp (6), described rolling clamp (6) is provided with angular instrument (5).
2. a kind of tension-torsion coupling stiffness proving installation according to claim 1, it is characterized in that: described rolling clamp (6) is connected with electric rotating machine (7), described rolling clamp (6) is connected with bearing (8) with electric rotating machine (7).
3. a kind of tension-torsion coupling stiffness proving installation according to claim 1, is characterized in that: described sample (9) is extra large cable, umbilical cables or marine flexible pipeline.
4. a kind of tension-torsion coupling stiffness proving installation according to claim 1, is characterized in that: described rolling clamp (6) freely rotates or driven by electric rotating machine (7) and rotates.
5. a kind of tension-torsion coupling stiffness proving installation according to claim 1, is characterized in that: the puller system (1) in this device, torque sensor (2), extensometer (4), angular instrument (5) are all connected with computing machine with electric rotating machine (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420517416.6U CN204116128U (en) | 2014-09-10 | 2014-09-10 | A kind of tension-torsion coupling stiffness proving installation |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181032A (en) * | 2014-09-10 | 2014-12-03 | 中天科技海缆有限公司 | Tension-torsion coupling rigidity testing device |
| CN105259050A (en) * | 2015-11-13 | 2016-01-20 | 宁波星箭航天机械有限公司 | Twist testing device for pump connection rubber pipe |
| CN105259052A (en) * | 2015-11-13 | 2016-01-20 | 宁波星箭航天机械有限公司 | Warp testing device used for pump connecting rubber hose |
| CN105300815A (en) * | 2015-11-13 | 2016-02-03 | 宁波星箭航天机械有限公司 | Twist testing device of high-pressure rubber hose |
| CN105486594A (en) * | 2015-12-08 | 2016-04-13 | 王友善 | Rubber material tension-torsional fatigue combined testing machine |
| CN109443924A (en) * | 2018-12-13 | 2019-03-08 | 宁波赛宝信息产业技术研究院有限公司 | A kind of power supply line push-and-pull torque test device and method |
-
2014
- 2014-09-10 CN CN201420517416.6U patent/CN204116128U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181032A (en) * | 2014-09-10 | 2014-12-03 | 中天科技海缆有限公司 | Tension-torsion coupling rigidity testing device |
| CN105259050A (en) * | 2015-11-13 | 2016-01-20 | 宁波星箭航天机械有限公司 | Twist testing device for pump connection rubber pipe |
| CN105259052A (en) * | 2015-11-13 | 2016-01-20 | 宁波星箭航天机械有限公司 | Warp testing device used for pump connecting rubber hose |
| CN105300815A (en) * | 2015-11-13 | 2016-02-03 | 宁波星箭航天机械有限公司 | Twist testing device of high-pressure rubber hose |
| CN105259050B (en) * | 2015-11-13 | 2017-11-24 | 宁波星箭航天机械有限公司 | Pump connects the distortion testing device of sebific duct |
| CN105300815B (en) * | 2015-11-13 | 2018-01-16 | 宁波星箭航天机械有限公司 | The distortion testing device of high-pressure rubber pipe |
| CN105259052B (en) * | 2015-11-13 | 2018-01-16 | 宁波星箭航天机械有限公司 | Connect the distortion testing device of sebific duct for pump |
| CN105486594A (en) * | 2015-12-08 | 2016-04-13 | 王友善 | Rubber material tension-torsional fatigue combined testing machine |
| CN109443924A (en) * | 2018-12-13 | 2019-03-08 | 宁波赛宝信息产业技术研究院有限公司 | A kind of power supply line push-and-pull torque test device and method |
| CN109443924B (en) * | 2018-12-13 | 2024-04-16 | 宁波赛宝信息产业技术研究院有限公司 | Power line push-pull torsion testing device and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 226010 No. 1 South Road, Nantong economic and Technological Development Zone, Jiangsu, China Patentee after: Zhongtian Technology submarine cable Co.,Ltd. Address before: 226000 No. 1 Xin Kai Nan Road, Nantong economic and Technological Development Zone, Jiangsu Patentee before: ZHONGTIAN TECHNOLOGIES SUBMARINE CABLE Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |