CN104101545B - The bending stiffness of a kind of flexible pipe and torsion rigidity measurer - Google Patents

The bending stiffness of a kind of flexible pipe and torsion rigidity measurer Download PDF

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Publication number
CN104101545B
CN104101545B CN201410291312.2A CN201410291312A CN104101545B CN 104101545 B CN104101545 B CN 104101545B CN 201410291312 A CN201410291312 A CN 201410291312A CN 104101545 B CN104101545 B CN 104101545B
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oil cylinder
flexible pipe
crank
main support
otic placode
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CN201410291312.2A
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CN104101545A (en
Inventor
曹静
周巍伟
陈星�
沙勇
李丽玮
刘国璋
宋平娜
刘栋杰
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China National Offshore Oil Corp CNOOC
CNOOC Research Institute Co Ltd
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NEPTUNE OFFSHORE ENGINEERING DEVELOPMENT Co Ltd
China National Offshore Oil Corp CNOOC
CNOOC Research Institute Co Ltd
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Abstract

The present invention relates to bending stiffness and the torsion rigidity measurer of a kind of flexible pipe, including a: main support, one fix shaft stool, one fix axle, two rotation axis supports, a rotary shaft, one first otic placode, one second otic placode, one first oil cylinder, a mobile support saddle, one second oil cylinder, a third ear plate, one the 4th otic placode, one the 3rd oil cylinder, a rotary crank, two the 4th oil cylinders, one first handle, one first ratchet, a crank and one second handle.The present invention is disposed with for mobile fixing shaft stool so that installing the oil cylinder of flexible pipe, forcing flexible pipe that the oil cylinder of vertical bending occurs and driving rotary crank to rotate so that the oil cylinder that twists of flexible pipe, it is achieved that measure hose bending rigidity and the function of torsional rigidity simultaneously;And the principle of the invention is simple, simple operation, has stronger engineering practicability.

Description

The bending stiffness of a kind of flexible pipe and torsion rigidity measurer
Technical field
The present invention relates to a kind of measurement apparatus, especially with regard to bending stiffness and the torsion rigidity measurer of a kind of flexible pipe.
Background technology
Along with the development of hose technology, increasing oilfield development project uses flexible pipe.Flexible pipe before application, needs elder generation Knowing that its performance is thought that it uses and provided foundation more reliably, the cross section property of flexible pipe is a basic parameter of flexible pipe, And rigidity is the basis of cross section physical property, it it is a key parameter of pipeline applied analysis.But, for baroque For flexible pipe, theory cannot obtain the accurate data of rigidity.
Flexible pipe is combined by metal and nonmetallic materials, and typical hose construction includes casing play, inner pressuring sealing Layer, resistance to compression armor, tension armor and external coating, be to transmit load, wherein bone by extruding force between every layer Rack-layer, resistance to compression armor and tension armor are what metal was entwined, and inner pressuring sealing layer and external coating are non-gold Belong to layer, polymer extrusion form.Owing to software configuration is more complicated, simple force equation cannot consider each layer it Between interaction, so the rigidity of flexible pipe need to be recorded by test.
The method of test hose bending stiffness is to utilize simply supported beam principle at present, and flexible pipe one end utilizes steel frame agretope Moving, the other end utilizes loop wheel machine traction steel chain to apply power to flexible pipe, connects interpolation sensor at steel, measures pulling force and deformation. Using the method to measure and have the disadvantage in that one is that certainty of measurement is low, loop wheel machine is unstable after passing through steel chain reinforcing, The data causing sensor change always, and excursion is relatively big, thus cause measurement structure to be forbidden to determine;Two are Being fitted without joint during measurement, flexible pipe, by joint power transmission, cannot consider between each layer discounting for joint Interact, so stiffness measurement value is also forbidden.
The method of test hose torsional rigidity is to be fixed the flexible pipe one end being provided with joint at present, and other end joint welds Connecing girder steel, afterburning at the other end of girder steel by crane, this power passes to be on flexible pipe moment of torsion, on the draught line of crane Placement sensor dynamometry, girder steel is arranged sense sensor measures the position of girder steel, thus releases the windup-degree of flexible pipe, logical Exertin and windup-degree calculate the torsional rigidity of flexible pipe.The shortcoming of this test method is that certainty of measurement is low, and one is Owing to the power of crane is unstable;Two is owing to the rigidity of joint and the rigidity of flexible pipe are inconsistent, so the torsion angle of girder steel Degree cannot accurately reflect the windup-degree of flexible pipe.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide a kind of bending stiffness measuring flexible pipe accurately and torsional rigidity Measurement apparatus.
For achieving the above object, the present invention is by the following technical solutions: the bending stiffness of a kind of flexible pipe and torsional rigidity are surveyed Amount device, it is characterised in that it includes: a main support;One is slidably connected at the fixing of top, described main support one end Shaft stool;One is fastenedly connected the fixing axle on described fixing shaft stool;Two intervals are fastenedly connected at described main support another The rotation axis support at top, one end;One is rotatably connected on the rotary shaft on rotation axis support described in two;One be arranged on described Main support side and the first otic placode extended downwardly from;One is arranged on the second otic placode bottom described fixing shaft stool;One even Connect the first oil cylinder of described first otic placode and described second otic placode;One is slidably connected at the top in the middle part of described main support Mobile support saddle;One is fastenedly connected the second oil cylinder on described mobile support saddle and vertically upward;One is arranged on described movement Rest base and the third ear plate extended downwardly from;One is arranged on the 4th otic placode bottom described main support;One connection is described Third ear plate and the 3rd oil cylinder of described 4th otic placode;One at rotary crank between rotation axis support described in two;Two Connect the 4th oil cylinder bottom one end of described rotary crank and described main support respectively;One is arranged on described rotary crank Top and the first handle moving up and down;One adapter sleeve be connected on described first handle just to rotary shaft on first Ratchet;One is fastenedly connected at the crank of rotation axis support side described in;One is arranged on the of described crank top Two handles;And one adapter sleeve be connected on described second handle just to rotary shaft on the second ratchet;Wherein, described Fixing axle and described rotary shaft have coaxial relation, and described first oil cylinder is parallel to the axis of described fixing axle, and described the The outfan extended line of two oil cylinders intersects vertically with the axis of described fixing axle, and described 3rd oil cylinder is parallel to described fixing The axis of axle.
One or more compensation hole it is respectively arranged with on described fixing axle and rotary shaft.
Connection between described 4th oil cylinder and the bottom of described main support is hinged.
Described first handle is screw rod, and the nut coordinated with described screw rod is fastenedly connected at the top of described rotary crank, When rotating described screw rod, described screw rod moves or moves down to prop up or unclamp described first ratchet.
Described second handle is screw rod, and the nut coordinated with described screw rod is fastenedly connected at the top of described crank, works as rotation When turning described screw rod, described screw rod moves or moves down to prop up or unclamp described second ratchet.
Due to the fact that and take above technical scheme, it has the advantage that 1, the present invention is disposed with for moving Fixing shaft stool is so that installing the oil cylinder of flexible pipe, forcing flexible pipe the oil cylinder of vertical bending occurs and drives rotary crank to turn Dynamic so that the oil cylinder that twists of flexible pipe, it is achieved that to measure hose bending rigidity and the function of torsional rigidity simultaneously.2、 The present invention utilize oil cylinder implement ballast, make loaded load more stable, after load adds simultaneously can fixed load, Being easy to the record during measuring, measured rigidity is more accurate.3, the principle of the invention is simple, simple operation, tool There is stronger engineering practicability.
Accompanying drawing explanation
Fig. 1 is schematic front view of the present invention;
Fig. 2 is schematic side view of the present invention;
Fig. 3 is schematic top plan view of the present invention.
Detailed description of the invention
With embodiment, the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in Figures 1 to 3, the present invention includes a main support 1, and the top slide in main support 1 one end connects one and fixes Shaft stool 2, is fastenedly connected one on fixing shaft stool 2 and fixes axle 3, is fastenedly connected at the top of main support 1 other end Two spaced apart rotation axis supports 4, two rotation axis supports 4 are rotationally connected a rotary shaft 5, fixing axle 3 and rotary shaft 5 have coaxial relation.The bottom of fixing shaft stool 2 is provided with an otic placode 2-1 extended downwardly from, the side of main support 1 Being provided with an otic placode 1-1 extended downwardly from, connected by an oil cylinder 6 between two otic placode 1-1,2-1, oil cylinder 6 is parallel Axis in fixing axle 3.Top slide in the middle part of main support 1 connects a mobile support saddle 7, and mobile support saddle 7 tightens Being solidly connected an oil cylinder 8 vertically upward, the outfan extended line of oil cylinder 8 intersects vertically with the axis of fixing axle 3.Move The bottom of dynamic bearing 7 is provided with an otic placode 7-1 extended downwardly from, and otic placode 7-1 is arranged on master by an oil cylinder 9 and Otic placode 1-2 bottom support 1 connects, and oil cylinder 9 is parallel to the axis of fixing axle 3.Present invention additionally comprises one and be positioned at two Rotary crank 10 between rotation axis support 4, the two ends of rotary crank 10 connect main support by an oil cylinder 11 respectively The bottom of 1, arranges a handle 12 moving up and down at the top of rotary crank 10.Handle 12 just to rotation In rotating shaft 5, fastening socket one ratchet 13, can closely prop up ratchet 13 when handle 12 moves down.At a rotation axis support The side of 4 is fastenedly connected a crank 14, and the top of crank 14 is provided with a handle 15 moving up and down, at handle 15 just to rotary shaft 5 on fastening be socketed another ratchet 16.
In above-described embodiment, fixing axle 3 and rotary shaft 5 are respectively arranged with one or more compensation hole 17, compensate hole 17 for fixing the connection between axle 3, rotary shaft 5 and flexible pipe 18.
In above-described embodiment, being connected by between the bottom of oil cylinder 11 and main support 1 is hinged.
In above-described embodiment, handle 12,15 can specifically use screw rod, and the nut coordinated with screw rod is fastenedly connected in rotation Turn crank 10 or the top of crank 14, when rotary screw, screw rod can be made to move down or upper shifting, in order to prop up or Person unclamps ratchet 13,16.
The present invention is used to measure the method for the bending stiffness of flexible pipe and torsional rigidity as follows:
(1), when using the present invention to measure the bending stiffness of flexible pipe, oil cylinder 6 is first passed through by outside for fixing shaft stool 2 Removal, is then arranged on flexible pipe 18 one end of a length of L in rotary shaft 5 and (utilizes latch to be inserted into the compensation of rotary shaft On hole 17), then make fixing shaft stool 2 move inward by oil cylinder 6, when fixing axle 3 and flexible pipe 18 junction contacts After, make both connect (utilizing bearing pin to be inserted on the compensation hole 17 of fixing axle 3);Recycling oil cylinder 9 promotes mobile Seat 7, makes oil cylinder 8 move to the position of L/2 of flexible pipe 18, by oil cylinder 8 jacking flexible pipe 18, remembers during jacking The pressure P and the displacement y of flexible pipe 18 of record oil cylinder 8, after off-test, by internal diameter R and the oil cylinder 8 of oil cylinder 8 Pressure P and the displacement y of flexible pipe 18, calculate hose bending rigidity EI=π R2PL3/(48y)。
(2), when using the present invention to measure the torsional rigidity of flexible pipe, on flexible pipe 18, an axial call wire is first drawn, Then utilize method with (one) as flexible pipe 18 installation to be put in place, then make handle 12 move down closely to prop up spine Wheel 13.When measuring torsional rigidity clockwise, oil cylinder 11 is utilized to promote rotary crank 10, rotary crank 10 to drive ratchet 13 rotate thus flexible pipe 18 is loaded moment of torsion, when being loaded into specified torque T stop load, now make handle 15 times Move and closely prop up ratchet 16 with permanent twist power, measure the rotational angle theta of now call wire, after being measured, mention handle Moment of torsion is let out load by 15, then calculates torsional rigidity GIP=TL/ θ.Then same method is used can to measure torsion counterclockwise Turn rigidity.
The present invention only illustrates with above-described embodiment, the structure of each parts, arranges position and to connect be all to have Changed.On the basis of technical solution of the present invention, all improvement individual part carried out according to the principle of the invention or Equivalents, the most should not get rid of outside protection scope of the present invention.

Claims (6)

1. the bending stiffness of flexible pipe and a torsion rigidity measurer, it includes:
One main support;
The one fixing shaft stool being slidably connected at top, described main support one end;
One is fastenedly connected the fixing axle on described fixing shaft stool;
Two intervals are fastenedly connected the rotation axis support at described main support other end top;
One is rotatably connected on the rotary shaft on rotation axis support described in two;
One is arranged on described main support side and the first otic placode extended downwardly from;
One is arranged on the second otic placode bottom described fixing shaft stool;
One the first oil cylinder connecting described first otic placode and described second otic placode;
One at rotary crank between rotation axis support described in two;
The 4th oil cylinder bottom two one end connecting described rotary crank respectively and described main support;
One is arranged on described rotary crank top and the first handle moving up and down;
One adapter sleeve be connected on described first handle just to rotary shaft on the first ratchet;
One is fastenedly connected at the crank of rotation axis support side described in;
One the second handle being arranged on described crank top;And
One adapter sleeve be connected on described second handle just to rotary shaft on the second ratchet;
Wherein, described fixing axle and described rotary shaft have coaxial relation, and described first oil cylinder is parallel to described fixing axle Axis;
It is characterized in that, also include:
One mobile support saddle being slidably connected at the top in the middle part of described main support;
One is fastenedly connected the second oil cylinder on described mobile support saddle and vertically upward;
The one third ear plate being arranged on bottom described mobile support saddle and extending downwardly from;
One is arranged on the 4th otic placode bottom described main support;
One the 3rd oil cylinder connecting described third ear plate and described 4th otic placode;
Wherein, the outfan extended line of described second oil cylinder intersects vertically with the axis of described fixing axle, described 3rd oil Cylinder is parallel to the axis of described fixing axle.
The bending stiffness of a kind of flexible pipe the most as claimed in claim 1 and torsion rigidity measurer, it is characterised in that One or more compensation hole it is respectively arranged with on described fixing axle and rotary shaft.
The bending stiffness of a kind of flexible pipe the most as claimed in claim 1 and torsion rigidity measurer, it is characterised in that Connection between described 4th oil cylinder and the bottom of described main support is hinged.
The bending stiffness of a kind of flexible pipe the most as claimed in claim 2 and torsion rigidity measurer, it is characterised in that Connection between described 4th oil cylinder and the bottom of described main support is hinged.
The bending stiffness of a kind of flexible pipe the most as claimed in claim 1 or 2 or 3 or 4 and torsion rigidity measurer, It is characterized in that, described first handle is screw rod, and the nut coordinated with described screw rod is fastenedly connected at described rotary crank Top, when rotate described screw rod time, described screw rod moves or moves down to prop up or unclamp described first ratchet.
The bending stiffness of a kind of flexible pipe the most as claimed in claim 1 or 2 or 3 or 4 and torsion rigidity measurer, It is characterized in that, described second handle is screw rod, and the nut coordinated with described screw rod is fastenedly connected on the top of described crank Portion, when rotating described screw rod, described screw rod moves or moves down to prop up or unclamp described second ratchet.
CN201410291312.2A 2014-06-25 2014-06-25 The bending stiffness of a kind of flexible pipe and torsion rigidity measurer Active CN104101545B (en)

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CN104677732B (en) * 2015-03-04 2017-09-05 中国石油化工股份有限公司 Thermoplastic pipeline bending property test fixture
CN105277449A (en) * 2015-11-09 2016-01-27 上海核工程研究设计院 Metal hose torsional rigidity measuring device
CN105300814B (en) * 2015-11-11 2019-02-19 武汉网锐检测科技有限公司 It is a kind of for cable splice closure carry out bending and torsion test device and method
CN105953712A (en) * 2016-05-04 2016-09-21 上海工程技术大学 Shaft-like member loading deformation testing device and testing method
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CN106092767B (en) * 2016-06-17 2018-08-07 西北工业大学 A kind of measuring device and measuring method of defeated stream hose bending rigidity
CN106092751A (en) * 2016-06-24 2016-11-09 江苏蓝潮海洋风电工程建设有限公司 A kind of high-pressure hose fatigue machine
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CN106950167B (en) * 2017-04-18 2019-07-09 天津大学 Full-scale Ocean Oil And Gas Pipeline stress etching experiment method
CN108225953A (en) * 2018-03-08 2018-06-29 陕西科技大学 A kind of cold flex test platform based on oil pipeline
CN108519299A (en) * 2018-03-08 2018-09-11 陕西科技大学 A kind of removable cold flex test platform based on oil pipeline
CN108844701A (en) * 2018-06-05 2018-11-20 陕西科技大学 Space bending test platform based on oil pipeline
CN109238874A (en) * 2018-09-24 2019-01-18 天津市百瑞泰管业股份有限公司 A kind of multi-functional metal hose measurer for curve rigid
CN110579408A (en) * 2019-09-16 2019-12-17 哈尔滨工程大学 arbitrary curvature bending and sliding experimental device and testing method for spirally winding armored steel wires of marine flexible pipe cable

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