CN105823398B - A kind of novel ocean engineering compliance umbilical minimum bending radius test device and method - Google Patents

A kind of novel ocean engineering compliance umbilical minimum bending radius test device and method Download PDF

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Publication number
CN105823398B
CN105823398B CN201610308839.0A CN201610308839A CN105823398B CN 105823398 B CN105823398 B CN 105823398B CN 201610308839 A CN201610308839 A CN 201610308839A CN 105823398 B CN105823398 B CN 105823398B
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umbilical
arc plate
horizontal
gear
hole
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CN105823398A (en
Inventor
杨钰城
杨志勋
阎军
卢青针
尹原超
岳前进
陈金龙
吴尚华
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Dalian University of Technology
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Dalian University of Technology
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical means
    • G01B5/20Measuring arrangements characterised by the use of mechanical means for measuring contours or curvatures
    • G01B5/213Measuring arrangements characterised by the use of mechanical means for measuring contours or curvatures for measuring radius of curvature

Abstract

The invention discloses a kind of novel ocean engineering compliance umbilical minimum bending radius test devices, including anvil block, horizontal slide rail, rack on the horizontal slide rail, the actuator for pushing the rack to be moved along the horizontal slide rail, the pinion gear with rack cooperation, the gear wheel with the pinion fits, the gear fixed frame and rope of the fixed gear wheel and the pinion gear, the anvil block include the umbilical curved support plates and supporting girder structure of arc plate, the fixed arc plate.The invention also discloses a kind of novel ocean engineering compliance umbilical minimum bending radius test methods.Umbilical is by the larger gradual continuous transition of radius of curvature to smaller radius during present invention realization loads, until umbilical armouring wire reaches yield situation.To, it is ensured that experiment can be accurately obtained the minimum bending radius of umbilical.

Description

A kind of novel ocean engineering compliance umbilical minimum bending radius test device and Method
Technical field
The present invention relates to a kind of test device and method, specifically a kind of novel ocean engineering compliance umbilical is most Small-bend radius test device and method.
Background technology
China's Marine oil and gas resource rich reserves, and most of it is distributed in the deep water sea areas such as the South Sea.And extra large cable, umbilical cables with And flexible duct etc. is one of equipment indispensable in deep-sea oil gas exploitation.This kind of equipment can be collectively referred to as ocean compliance pipe Cable, structure are usually made of corresponding building blocks of function and stiffener such as armouring wire etc..For different engineering demands, answer Select the umbilical of corresponding function;Extra large cable is mainly responsible for provides electric energy for seabed production equipment, and umbilical cables mainly provide water floating body The correlation functions such as electric power, signal transmission between subsea equipment, flexible duct are mainly responsible for the oil-gas transportation between equipment.Ocean Compliance umbilical is laid in storage transport, installation and when the operating mode such as operation in place, due to by work load, floating motion and multiple The factors such as miscellaneous marine environment influence, and be easy to cause a variety of mechanical behavior failures.Wherein, when the bending of the umbilical under load action half When diameter is less than its minimum bending radius, the built-in function and load-carrying member of umbilical will be destroyed, and the normal of umbilical function is influenced Operation.Therefore, ocean engineering umbilical minimum bending radius is important one of design parameter.It is curved in order to verify umbilical product minimum Whether bilge radius reaches design requirement, and to reduce the probability for the destruction that bends during use, umbilical is being tested before being on active service Interior needs to carry out test certification to its minimum bending radius.Measurement result will be as important mechanical performance index.
Since umbilical is complicated and type is various, its minimum bending radius of different types of umbilical differs greatly, and becomes Change is generally in the range of 1m~4m.(umbilical is minimum mainly for certain radius variation range for the existing experimental provision in laboratory at present Near bending radius) replication experiment is carried out, not it is suitable for each umbilical, and can not achieve and continuously accurately measure.Root Find do not there is manufacturer to produce such testing machine yet so far according to market survey.Therefore, most umbilical manufacturers or research institution's root Minimum bending radius test is carried out using homemade experimental provision according to test object.
According to Practical Project demand, minimum bending radius is usually used in simulation ocean engineering flexible pipe cable and is stored in reel or volume The state of cylinder.Therefore minimum bending radius test equipment device needs to include the equipment of simulation reel, and can apply moment of flexure The equipment for bringing it about flexural deformation.In addition to this, experimentation needs to configure measuring apparatus, such as foil gauge or sensor with Just extraction umbilical bending process relevant parameter index (intermediate or direct physical quantity).Umbilical minimum bending radius test experiments flow Usually as follows:Sampling, fixation, pieces of cloth, load, measurement and post-processing mode expansion.Experiment will formulate corresponding before starting Testing scheme simultaneously chooses umbilical sample, and then umbilical to be tested is fixed on test stand, is existed according to requirement of experiment Test position carries out foil gauge arrangement, and is coupled with data acquisition equipment.Ensure that the errorless rear start-up loading of aforesaid operations is set It is standby, while related data is acquired in real time.Finally, analyzing processing is carried out to the data obtained and forms perfect laboratory report.
Defects in the prior art or problem
Umbilical minimum bending radius test (Fig. 1) is carried out using semicircle anvil block in laboratory at present, mainly by following Step is realized:
1, the minimum bending radius of theoretical calculation umbilical 1` to be tested, or designed with reference to shaped article minimum bending radius Value;
2, theoretical assessment (or design value) is compared with existing bending radius on anvil block 2` (Fig. 2-Fig. 4), is selected It selects the relatively large bending radius that can be provided with its immediate anvil block 2` to be tested, then interts iron staff simultaneously in corresponding hole It is bolted;
3, umbilical 1` is positioned on the anvil block 2` of selected radius, foil gauge etc. is arranged in its corresponding position and is adjusted Examination;
4, anvil block 2` is lifted by chain block 3` and transmission device, while the both ends umbilical 1` to be tested is passed through into chain Traction is fixed.With gradually rising for anvil block 2`, umbilical 1` is gradually bonded with anvil block 2`, until fitting completely, record are answered at this time Variate;
5, by the strain value compared with the permissible of component, the value is less than permissible under normal conditions, then, by anvil The bending radius of seat 2` is adjusted to close on smaller value, continues experiment until strain value is more than permissible.To which finally estimation is managed The minimum bending radius value range of cable 1`.
There are shortcomings for this kind of experimental provision:
1, the umbilical minimum bending radius that anvil block can measure has the shortcomings that small range jumping characteristic, is only applicable to certain pipes The measurement of cable minimum bending radius, and measurement result is inaccurate;
2, by the load mode of chain block, force that manually can only be intermittent;Thus load cannot be controlled well Speed.Simultaneously as the design feature of chain block, will will produce certain rebound, at later data after force every time Reason brings larger inconvenience;
3, it is fixed using chain traction formula due to two end connector of umbilical, the swing of certain amplitude can occur in loading procedure, Stability is poor, increases the error of experiment;
4, entire test operation needs multiple person cooperational that could complete, and takes, is laborious;
5, since umbilical test specimen is needed across entire anvil block, therefore, it is necessary to longer test specimens could facilitate load and operation, Cause the waste of laboratory sample.
Invention content
In view of the above problems, proposing a kind of novel ocean engineering compliance umbilical minimum bending radius test device and side Method.The test device devises the arc plate with radius of curvature linear change, while replacing chain block using actuator Mode is loaded.The design of the test device disclosure satisfy that the measurement of most umbilical minimum bending radius.The present invention adopts Technological means is as follows:
A kind of novel ocean engineering compliance umbilical minimum bending radius test device, including anvil block, horizontal slide rail, position Rack on the horizontal slide rail, the actuator for pushing the rack to be moved along the horizontal slide rail coordinate with the rack Pinion gear, the gear wheel with the pinion fits, the gear fixed frame of the fixed gear wheel and the pinion gear and Rope,
The anvil block includes the umbilical curved support plates and supporting girder structure of arc plate, the fixed arc plate,
The gear face of the gear wheel side has the cylindrical wound portion coaxial with the gear wheel, the rope One end is fixed on the side wall of the cylindrical wound portion,
The radius of curvature of the outer of the horizontal cross-section of the arc plate changes linearly, the radius of curvature of the arc plate it is big one End is fixedly connected with the umbilical curved support plates, and it is logical that the arc plate is equipped with the level extended along arc plate benging direction Hole, the horizontal through hole extend to the umbilical curved support plates, and the umbilical curved support plates are close to arc plate outer Side is equipped with joint fixing apparatus,
Under working condition, when non-load power, one end of the umbilical is hung down by umbilical connector and the joint fixing apparatus Direct-connected to connect, the other end of the rope is connect across the horizontal through hole with the free end of the umbilical, the center of the rope Line and the center line of the umbilical are located in the same horizontal plane and (ensure that loading surface remains at same plane), the umbilical When not being bent, the fixing end of the umbilical and the opening of the horizontal through hole are tangent,
When loading force, the actuator pushes the rack, and pinion gear described in the rack drives, the pinion gear drives The gear wheel, the gear wheel rotate on the side wall for making the rope be wrapped in the cylindrical wound portion, the rope The umbilical is pulled to be bent to the horizontal through hole.
Radius of curvature on the outer of the horizontal cross-section of the arc plate at certain point meets following formula:
ρ=- 1.5x+4,
Rectangular coordinate system xOy is being established in horizontal plane, wherein the level of the arc plate where the horizontal cross-section of the arc plate The outer in section is coordinate origin O with umbilical curved support plates intersection, perpendicular to the umbilical curved support plates and is referred to To the positive direction that the arc plate extending direction is x-axis, it is parallel to the umbilical curved support plates and is directed toward the arc plate benging side To for positive direction of the y-axis, ρ is the radius of curvature at certain point on the outer of the horizontal cross-section of the arc plate, and x is the level of the arc plate Certain point value corresponding in x-axis, the use scope ranging from as suggested in the present invention of 0≤x≤2, x on the outer in section.
Wherein,ThenIt is assumed that primary condition y (0)=0, (0)=0 y ' solves the differential equation using MAPLE, and obtaining analytic solutions is:
Wherein, i is imaginary number, and t is integration variable, and above-mentioned equation y (x) is the curve of the outer of the horizontal cross-section of the arc plate The outer of equation, the horizontal cross-section of the arc plate is processed according to the curve that above-mentioned equation y (x) obtains.
The gear fixed frame be equipped with two straight slots being vertically arranged, two straight slots respectively by bolt and nut with Fixed plate I and fixed plate II connect, and the fixed plate I is connect by gear shaft I with the gear wheel, and the fixed plate II passes through Gear shaft II is connect with the pinion gear.
The arc plate, which is located at the plate face below the horizontal through hole and is equipped with, multiple to be arranged along arc plate benging direction Umbilical supports lever attachment hole, the umbilical support lever attachment hole to be equipped with the umbilical supporting rod for supporting the umbilical to keep horizontal, The umbilical supporting rod supports lever attachment hole to connect by bolt and nut with the umbilical.
For convenience of the test of the umbilical to a variety of calibers, the umbilical support lever attachment hole is the hole extended vertically, convenient The link position of the umbilical supporting rod adjustment and umbilical support lever attachment hole, and then adjust the umbilical supporting rod upper edge Position, realize the support to the umbilicals of different tube diameters.
The gear wheel be equipped with it is multiple using the axis of the gear wheel as the equally distributed hole I of axis, the hole I run through described in The end face of the gear face of gear wheel and the cylindrical wound portion,
The pinion gear is equipped with multiple using the axis of the pinion gear as the equally distributed hole II of axis, and the hole II is through institute State the gear face of pinion gear.
The detection device further includes supporting table, and the supporting table is equipped with the umbilical curved support plates and the arc Plate.
The upper edge of the arc plate is equipped with radius of curvature value.
The invention also discloses a kind of novel ocean engineering compliance umbilical minimum bending radius test method, features It is with following steps:
S1, design a kind of novel ocean engineering compliance umbilical minimum bending radius test device as described above;
S2, by one end of the umbilical by umbilical connector and the joint fixing apparatus vertical connection, the umbilical Free end is connect with the rope, and the rope passes through the horizontal through hole, and is wrapped in the side wall of the cylindrical wound portion On;
S3, opened on the busbar of the umbilical farthest apart from the arc plate take multiple dense arrangements, can be by the pipe Armouring wire inside cable leaks out and can accommodate the opening of foil gauge, and the foil gauge is bonded in the armouring by glue On steel wire, while the winding displacement one end for being connected to the foil gauge being fixed in the umbilical with adhesive tape, is prevented in test process Since winding displacement shaking causes the fluctuation of test data, the winding displacement other end to be connect with acquisition system, ess-strain is realized Real-time data transmission;
S4, made by being adjusted to a kind of novel ocean engineering compliance umbilical minimum bending radius test device The center line and the center line of the umbilical for obtaining the rope are located in the same horizontal plane, and prevent from surveying during the tubing sections The non-maximum strain value of strain value obtained generates measurement error, meanwhile, so that the rope is in tensioning state always, it is ensured that described Test device during the experiment can even running;
S5, the umbilical is loaded by a small margin by actuator driving, the strain for analyzing acquisition becomes at any time The curve of change is completed to carry out the entirely system of testing preliminary debugging, and after test request to be achieved, experiment is carried out in grouping;
The fltting speed of S6, the setting actuator drive realization to add the quasi-static of the umbilical by gear drive It carries, with the continuous increase of load, the umbilical is gradually bent to the horizontal through hole, and is gradually close to the arc plate benging and is become Shape, when the strain of a certain foil gauge on the armouring wire reaches yield strain, record at this time the umbilical with it is described The corresponding bending radius of corresponding point of arc plate;
S7, step S6 is repeated, statistics and error analysis is carried out to the bending radius repeatedly tested, obtain the umbilical Minimum bending radius.
In the step S1, the height of the arc plate is 0.8m, and the thickness of the arc plate is 0.1m, the horizontal through hole For neutrality line along 0.4m under the arc plate, the width of the horizontal through hole is 0.08m, on the one hand ensures to restrict described in experimentation It passes through and does not rub with the arc plate in horizontal through hole described in Suo Nengcong, on the other hand make the horizontal through hole width as possible It is sufficiently small, reduce influence of the trepanning to experimental measurements, while can reduce and be contacted with the horizontal through hole in experimentation The stress concentration of the umbilical.The side opening close to the umbilical of the horizontal through hole has rounded corner, with further Avoid stress concentration phenomenon.
In the step S1, the pinion gear and the gear wheel carry out conversion by common umbilical bending stiffness and select, And reduce the size of single tooth to meet the requirement of consecutive variations when pulling force applies.
The present invention has the following advantages:
1, compared to the anvil block of former bending radius gap jump, the present invention has radius of curvature linear change by design one Arc plate replace existing anvil block, realize during load umbilical by the larger gradual continuous transition of radius of curvature to it is smaller partly Diameter, until umbilical armouring wire reaches yield situation.To, it is ensured that experiment can be accurately obtained the minimum bending radius of umbilical.
2, arc plate self structure intensity and rigidity requirement be ensure that along setting truss in arc plate, realizes heavy caliber umbilical Load test demand.
3, arc plate is equipped with the horizontal through hole extended along arc plate benging direction, and rope is extended there through and loaded to umbilical, made It loads more flexible, conveniently, and ensures that loading surface remains same plane.
4, it is loaded compared to chain block, the present invention completes being rotated into for large and small gear by actuator drive rack And affecting the free end of umbilical to realize the load of moment of flexure by rope, this load mode is more convenient, laborsaving and convenient for control.
5, semicircle anvil block test method is compared, present invention only requires the half of original umbilical piece lengths can meet survey Amount requires, and saves sample consumption.
6, actuator stroke is amplified by large and small gear (two-stage gear), to realize that it is larger that umbilical free end generates Displacement realizes large range of bending curvature radius change to accurately determine minimum bending radius value.
When 7, to the processing of gear, selection design can be carried out to series of parameters such as the facewidth, transverse tooth thickness, to make umbilical most Semi-static load is realized in small-bend radius test, ensures the precision that experiment measures.
8, the setting of through hole I and hole II saves material and also ensures large and small gear structure intensity simultaneously.
9, former experimental provision is compared, greatly reduces personnel placement, experimental cost is cheaper.
The present invention can be widely popularized in fields such as performance tests based on the above reasons.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of existing experimental rig.
Fig. 2 is the front view of the anvil block of existing experimental rig.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the vertical view of Fig. 2.
Fig. 5 be the present invention specific implementation mode in a kind of novel ocean engineering compliance umbilical minimum bending radius survey The space structure schematic diagram that trial assembly is set.
Fig. 6 be the present invention specific implementation mode in a kind of novel ocean engineering compliance umbilical minimum bending radius survey The front view that trial assembly is set.
Fig. 7 is the left view of Fig. 6.
Fig. 8 is the vertical view of Fig. 6.
Fig. 9 be the present invention specific implementation mode in gear wheel front view.
Figure 10 is the left view of Fig. 9.
Figure 11 is the vertical view of Figure 10.
Figure 12 be the present invention specific implementation mode in anvil block schematic diagram.
Figure 13 is the left view of Figure 12.
Figure 14 is the vertical view of Figure 12.
Specific implementation mode
Embodiment 1
As shown in Fig. 5-Figure 14, a kind of novel ocean engineering compliance umbilical minimum bending radius test device,
Including anvil block, horizontal slide rail 2, the rack 3 being located on the horizontal slide rail 2 pushes the rack 3 along the level The actuator 4 that sliding rail 2 moves, the pinion gear 5 coordinated with the rack 3, the gear wheel 6 coordinated with the pinion gear 5, fixed institute Gear wheel 6 and the gear fixed frame 7 and rope 9 of the pinion gear 5 are stated,
The anvil block includes arc plate 1, fixes the umbilical curved support plates 8 and supporting girder structure 20 of the arc plate 1,
The gear face of 6 side of the gear wheel has the cylindrical wound portion 10 coaxial with the gear wheel 6, the rope One end of rope 9 is fixed on the side wall of the cylindrical wound portion 10,
The radius of curvature of the outer of the horizontal cross-section of the arc plate 1 changes linearly, and the radius of curvature of the arc plate 1 is big One end is fixedly connected with the umbilical curved support plates 8, and the arc plate 1 is equipped with the water extended along 1 bending direction of arc plate Flat through-hole 11, the horizontal through hole 11 extend to the umbilical curved support plates 8, and the umbilical curved support plates 8 are close to described The side of 1 outer of arc plate is equipped with joint fixing apparatus 12,
Under working condition, when non-load power, one end of the umbilical 13 passes through umbilical connector and the joint fixing apparatus The other end of 12 vertical connections, the rope 9 is connect across the horizontal through hole 11 with the free end of the umbilical 13, the rope The center line of rope 9 and the center line of the umbilical 13 are located in the same horizontal plane, and the umbilical 13 is not when being bent, the umbilical 13 fixing end and the opening of the horizontal through hole 11 are tangent,
When loading force, the actuator 4 pushes the rack 3, the rack 3 to drive the pinion gear 5, the pinion gear 5 drive the gear wheel 6, and the gear wheel 6 rotates so that the rope 9 is wrapped in the side wall of the cylindrical wound portion 10 On, the rope 9 pulls the umbilical 13 to be bent to the horizontal through hole 11.
Radius of curvature on the outer of the horizontal cross-section of the arc plate 1 at certain point meets following formula:
ρ=- 1.5x+4,
Rectangular coordinate system xOy is being established in horizontal plane, wherein the water of the arc plate 1 where the horizontal cross-section of the arc plate 1 The outer of plane section is coordinate origin O with 8 intersection of umbilical curved support plates, perpendicular to the umbilical curved support plates 8 And it is directed toward the positive direction that 1 extending direction of arc plate is x-axis, be parallel to the umbilical curved support plates 8 and is directed toward the arc plate 1 Bending direction is positive direction of the y-axis, and ρ is the radius of curvature at certain point on the outer of the horizontal cross-section of the arc plate 1, and x is the arc Certain point value corresponding in x-axis, 0≤x≤2 on the outer of the horizontal cross-section of plate 1.
The gear fixed frame 7 is equipped with two straight slots 15 being vertically arranged, and two straight slots 15 pass through bolt respectively Nut is connect with fixed plate I 16 and fixed plate II 17, and the fixed plate I 16 is connect by gear shaft I 18 with the gear wheel 6, The fixed plate II 17 is connect by gear shaft II 19 with the pinion gear 5.
The plate face that the arc plate 1 is located at 11 lower section of the horizontal through hole is arranged equipped with multiple along 1 bending direction of arc plate The umbilical of row supports lever attachment hole 21, and the umbilical support lever attachment hole 21, which is equipped with, supports the umbilical 13 to keep horizontal pipe Cable supporting rod 22, the umbilical supporting rod 22 support lever attachment hole 21 to connect by bolt and nut with the umbilical.
The gear wheel 6 be equipped with it is multiple using the axis of the gear wheel 6 as the equally distributed hole I 23 of axis, the hole I 23 is passed through The end face of the gear face and the cylindrical wound portion 10 of the gear wheel 6 is worn,
The pinion gear 5 is equipped with multiple using the axis of the pinion gear 5 as the equally distributed hole II 24 of axis, the hole II 24 Through the gear face of the pinion gear 5.
The detection device further includes supporting table 14, and the supporting table 14 is equipped with the umbilical curved support plates 8 and institute State arc plate 1.
The upper edge of the arc plate 1 is equipped with radius of curvature value.
Embodiment 2
A kind of novel ocean engineering compliance umbilical minimum bending radius test method has following steps:
A kind of novel ocean engineering compliance umbilical minimum bending radius test fills as described in Example 1 for S1, design It sets;
S2, one end of the umbilical 13 is passed through into umbilical connector and 12 vertical connection of the joint fixing apparatus, the pipe The free end of cable 13 is connect with the rope 9, and the rope 9 passes through the horizontal through hole 11, and is wrapped in the cylinder and twines On the side wall in portion 10;
S3, opened on the busbar of the umbilical 13 farthest apart from the arc plate 1 take multiple dense arrangements, can will be described Armouring wire inside umbilical 13 leaks out and can accommodate the opening of foil gauge, is bonded in the foil gauge by glue described On armouring wire, while the winding displacement one end for being connected to the foil gauge being fixed in the umbilical 13 with adhesive tape, the winding displacement The other end is connect with acquisition system, realizes stress-strain data real-time Transmission;
S4, made by being adjusted to a kind of novel ocean engineering compliance umbilical minimum bending radius test device The center line and the center line of the umbilical 13 for obtaining the rope 9 are located in the same horizontal plane, meanwhile, make the rope 9 always In tensioning state;
S5, the umbilical 13 is loaded by a small margin by the driving of the actuator 4, analyzes the strain of acquisition at any time The curve of variation is completed to carry out the entirely system of testing preliminary debugging, and after test request to be achieved, experiment is carried out in grouping;
S6, the fltting speed for setting the actuator 4 are realized by gear drive driving to the quasi-static of the umbilical 13 Load, with the continuous increase of load, the umbilical 13 is gradually bent to the horizontal through hole 11, and is gradually close to the arc plate 1 flexural deformation records the umbilical at this time when the strain of a certain foil gauge on the armouring wire reaches yield strain 13 bending radius corresponding with the corresponding point of the arc plate 1;
S7, step S6 is repeated, statistics and error analysis is carried out to the bending radius repeatedly tested, obtain the umbilical 13 minimum bending radius.
In the step S1, the height of the arc plate 1 is 0.8m, and the thickness of the arc plate 1 is 0.1m, the horizontal through hole For 11 neutrality line along 0.4m under the arc plate 1, the width of the horizontal through hole 11 is 0.08m.
In the step S1, the pinion gear 5 and the gear wheel 6 carry out conversion choosing by common umbilical bending stiffness It is fixed, and reduce the size of single tooth to meet the requirement of consecutive variations when pulling force applies.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (8)

1. a kind of novel ocean engineering compliance umbilical minimum bending radius test device, it is characterised in that:Including anvil block, water Smooth rail, the rack being located on the horizontal slide rail, the actuator for pushing the rack to be moved along the horizontal slide rail are and described The gear of the pinion gear of rack cooperation, the gear wheel with the pinion fits, the fixed gear wheel and the pinion gear is solid Determine frame and rope,
The anvil block includes the umbilical curved support plates and supporting girder structure of arc plate, the fixed arc plate,
The gear face of the gear wheel side has the cylindrical wound portion coaxial with the gear wheel, one end of the rope It is fixed on the side wall of the cylindrical wound portion,
The radius of curvature of the outer of the horizontal cross-section of the arc plate changes linearly, the big one end of the radius of curvature of the arc plate with The umbilical curved support plates are fixedly connected, and the arc plate is equipped with the horizontal through hole extended along arc plate benging direction, institute It states horizontal through hole and extends to the umbilical curved support plates, the umbilical curved support plates are set close to the side of arc plate outer There is joint fixing apparatus,
Further include supporting table, the supporting table is equipped with the umbilical curved support plates and the arc plate,
The upper edge of the arc plate is equipped with radius of curvature value,
Under working condition, when non-load power, one end of the umbilical connects by the way that umbilical connector is vertical with the joint fixing apparatus Connect, the other end of the rope is connect across the horizontal through hole with the free end of the umbilical, the center line of the rope with The center line of the umbilical is located in the same horizontal plane, and the umbilical is not when being bent, the fixing end of the umbilical and the water The opening of flat through-hole is tangent,
When loading force, the actuator pushes the rack, pinion gear described in the rack drives, described in the pinion gear drives Gear wheel, the gear wheel rotates so that the rope is wrapped on the side wall of the cylindrical wound portion, and the rope pulls The umbilical is bent to the horizontal through hole.
2. test device according to claim 1, it is characterised in that:On the outer of the horizontal cross-section of the arc plate at certain point Radius of curvature meet following formula:
ρ=- 1.5x+4,
Rectangular coordinate system xOy is being established in horizontal plane, wherein the horizontal cross-section of the arc plate where the horizontal cross-section of the arc plate Outer and umbilical curved support plates intersection be coordinate origin O, perpendicular to the umbilical curved support plates and be directed toward institute The positive direction that arc plate extending direction is x-axis is stated, it is y to be parallel to the umbilical curved support plates and be directed toward arc plate benging direction Axis positive direction, ρ are the radius of curvature at certain point on the outer of the horizontal cross-section of the arc plate, and x is the horizontal cross-section of the arc plate Outer on certain point value corresponding in x-axis, 0≤x≤2.
3. test device according to claim 1, it is characterised in that:The gear fixed frame is vertically arranged equipped with two Straight slot, two straight slots are connect by bolt and nut with fixed plate I and fixed plate II respectively, and the fixed plate I passes through tooth Wheel shaft I is connect with the gear wheel, and the fixed plate II is connect by gear shaft II with the pinion gear.
4. test device according to claim 1, it is characterised in that:The arc plate is located at the plate below the horizontal through hole Face is equipped with multiple umbilicals along the arrangement of arc plate benging direction and supports lever attachment hole, is set on the umbilical support lever attachment hole There are the umbilical supporting rod for supporting the umbilical holding level, the umbilical supporting rod to pass through bolt and nut and the umbilical supporting rod Connecting hole connects.
5. test device according to claim 1, it is characterised in that:The gear wheel is equipped with multiple with the gear wheel Axis is the equally distributed hole I of axis, and the hole I is through the end of the gear face and the cylindrical wound portion of the gear wheel Face,
The pinion gear be equipped with it is multiple using the axis of the pinion gear as the equally distributed hole II of axis, the hole II run through it is described small The gear face of gear.
6. a kind of novel ocean engineering compliance umbilical minimum bending radius test method, it is characterised in that have following step Suddenly:
A kind of novel ocean engineering compliance umbilical minimum of S1, design as described in claim 1-5 any claims is curved Bilge radius test device;
S2, one end of the umbilical is passed through into umbilical connector and the joint fixing apparatus vertical connection, the freedom of the umbilical End is connect with the rope, and the rope passes through the horizontal through hole, and is wrapped on the side wall of the cylindrical wound portion;
S3, opened on the busbar of the umbilical farthest apart from the arc plate take multiple dense arrangements, can will be in the umbilical The armouring wire in portion leaks out and can accommodate the opening of foil gauge, and the foil gauge is bonded in the armouring wire by glue On, while the winding displacement one end for being connected to the foil gauge being fixed in the umbilical with adhesive tape, the winding displacement other end with adopt Collecting system connects, and realizes stress-strain data real-time Transmission;
S4, make institute by being adjusted to a kind of novel ocean engineering compliance umbilical minimum bending radius test device The center line and the center line of the umbilical for stating rope are located in the same horizontal plane, meanwhile, so that the rope is in tensioning always State;
S5, the umbilical is loaded by a small margin by actuator driving, analyzes what the strain of acquisition changed over time Curve is completed to carry out the entirely system of testing preliminary debugging, and after test request to be achieved, experiment is carried out in grouping;
The fltting speed of S6, the setting actuator drive the semi-static load realized to the umbilical by gear drive, with The continuous increase of load, the umbilical is gradually bent to the horizontal through hole, and is gradually close to the arc plate benging deformation, when When the strain of a certain foil gauge reaches yield strain on the armouring wire, the umbilical at this time and the arc plate are recorded The corresponding bending radius of corresponding point;
S7, step S6 is repeated, statistics and error analysis is carried out to the bending radius repeatedly tested, obtain the umbilical most Small-bend radius.
7. according to the method described in claim 6, it is characterized in that:In the step S1, the height of the arc plate is 0.8m, institute The thickness for stating arc plate is 0.1m, and the neutrality line of the horizontal through hole is under the arc plate along 0.4m, the width of the horizontal through hole For 0.08m.
8. according to the method described in claim 6, it is characterized in that:In the step S1, the pinion gear and the gear wheel It carries out that conversion is selected by umbilical bending stiffness, and reduces the size of single tooth to meet wanting for consecutive variations when pulling force applies It asks.
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