CN105021383A - A steel catenary standpipe integral analyzing and testing apparatus - Google Patents

A steel catenary standpipe integral analyzing and testing apparatus Download PDF

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Publication number
CN105021383A
CN105021383A CN201510310238.9A CN201510310238A CN105021383A CN 105021383 A CN105021383 A CN 105021383A CN 201510310238 A CN201510310238 A CN 201510310238A CN 105021383 A CN105021383 A CN 105021383A
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CN
China
Prior art keywords
standpipe
main equipment
equipment case
steel catenary
riser
Prior art date
Application number
CN201510310238.9A
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Chinese (zh)
Inventor
白兴兰
姚锐
谢永和
郑阳飞
朱海芬
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浙江海洋学院
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Application filed by 浙江海洋学院 filed Critical 浙江海洋学院
Priority to CN201510310238.9A priority Critical patent/CN105021383A/en
Publication of CN105021383A publication Critical patent/CN105021383A/en

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Abstract

The invention discloses a steel catenary standpipe integral analyzing and testing apparatus comprising a test case and a model catenary. The test case comprises a main body equipment box and an extension box body. The top portion of the main body equipment box is fixed with a driving module. A model seabed is installed on the bottom portion of the test case. The top end of the model standpipe is also provided with a force sensor. A plurality of displacement sensors or force sensors is uniformly distributed on the bottom portion of the bottom end of the model standpipe. The displacement sensors or force sensors are connected to a dynamic strain gauge arranged on the main body equipment box. According to the steel catenary standpipe integral analyzing and testing apparatus of the invention, different forms of motion excitation are given to the top end of the model standpipe through the driving module; the sensors and the dynamic strain gauge acquire vertical displacement changes of regions which the standpipe makes contact with, so that researches of motion and force bearing conditions of different positions of regions which the standpipe makes contact with under different forms of excitation can be conducted, and references can be provided for the overall design and analysis of the standpipe.

Description

A kind of steel catenary riser holistic approach test unit

Technical field

The present invention relates to the steel catenary riser investigative technique of deep-sea especially platform, particularly relate to a kind of steel catenary riser holistic approach test unit.

Background technology

As the main artery that offshore oil and gas is produced, riser systems occupies very important status in Marine oil and gas resource exploitation.Along with the depth of water increases, Deep Water Steel catenary riser (Steel Catenary Riser, SCR) unique advantage is shown gradually in cost control, the applicable invention such as the depth of water and compliability, and replace traditional standpipe, become the standpipe solution of deep-sea especially development of resources low-cost high-efficiency benefit, be widely used in various depth of water development project as the system connecting offshore floating device and submarine pipeline.

For the touchdown point region of Deep Water Steel catenary riser, the prototype test based on the standpipe holistic approach of pipe-soil interaction is costly, and is difficult to the problems such as observation.Now Domestic has carried out a large amount of small size simulated experiment outward, but these experimental studies mainly adopt clean cut system standpipe and native two-dimensional interaction to verify Numerical results, the motor imagination of truncation points is obtained as initial conditions again by inverse, doing one is like this be difficult to reaction engineering reality, and two is that the inverse of numerical evaluation has certain error.

China Patent Publication No. CN201965061U, publication date is on September 7th, 2011, name is called in a kind of scheme of device for fatigue test of deepwater riser and discloses a kind of device for fatigue test of deepwater riser, and it comprises master cylinder cylinder, axially loads cylinder, standpipe test specimen assembly, horizontal servo loading cylinder, soil body effect servo loading cylinder; Master cylinder cylinder top arranges external pressure interface and air release; Master cylinder cylinder two ends connect an axis with axial force interface respectively and load cylinder; The axis that standpipe sample assembly two ends are hinged on corresponding side respectively loads on cylinder piston, and standpipe sample assembly comprises a sample main body and a connecting rod; The simulation soil body is provided with below sample main body; Sample main body two ends arrange crimping mouth in respectively; Sample main body is provided with some sensors, and the test lead of each sensor passes master cylinder cylinder connecting test instrument; Each horizontal servo loading cylinder and soil body effect servo loading cylinder are all arranged on master cylinder cylinder, and wherein the piston top of two horizontal servo loading cylinders is at sample body top, and the piston top of another horizontal servo loading cylinder is bottom sample main body and connecting rod junction; The piston top of each soil body effect servo loading cylinder is bottom the simulation soil body.Weak point is, this standpipe fatigue test device is only tested standpipe in one direction, and what adopt is clean cut system standpipe, can not reflect that the engineering of standpipe is actual, tested by the test findings that draws can not be used to guide global design and the analysis of standpipe.

Summary of the invention

Technical matters to be solved by this invention is, a kind of steel catenary riser holistic approach test unit is provided, multi-form excitation can be provided to riser top ends, the motion of district's diverse location and stressing conditions thus research different excitation lower standing tube contacts to earth, and then provide reference for the global design of standpipe and analysis.

In order to solve the problems of the technologies described above, the invention provides a kind of steel catenary riser holistic approach test unit, comprise test box and model standpipe, described test box comprises main equipment case, and be fixed on the extension casing of described main equipment case side, and described main equipment case is connected with described extension casing, wherein, described main equipment box top is fixed with driver module, and is provided with model sea bed removably with described extension bottom half bottom described main equipment case; The top of described model standpipe is connected with described driver module, bottom is placed on described model sea bed, described model riser top is also provided with force snesor, described model bottom of vertical is evenly distributed with multiple displacement transducer or force snesor, and the displacement transducer of described model bottom of vertical or force snesor are connected with the dynamic strain indicator be arranged on described main equipment case;

Described model riser top ends is at the zigzag tread patterns of described driver module, or laterally drive, or do lengthwise movement under circumference driving, or transverse movement, or circular motion, and received by described dynamic strain indicator and process the signal that described force snesor and/or displacement transducer gather, obtain described model bottom of vertical and to contact to earth the change in displacement information in district.

Further, the multiple support bars that can be used for regulating height are respectively arranged with bottom described extension bottom half and described main equipment case.

Further, described driver module comprises:

Be fixed on the motor on described main equipment case, for providing driving power;

Removably be arranged on the slide rail on described main equipment case, and the installation direction of described slide rail is for longitudinally to arrange, or transversely arranges;

The slide block be connected with described model riser top ends, described slide block does longitudinal direction along described slide rail under described motor drives, or laterally, or circular motion.

Closer, the end of described model standpipe is fixed on described extension casing by fixed equipment.

Implement the embodiment of the present invention, there is following beneficial effect:

Steel catenary riser holistic approach test unit of the present invention, by installing driver module on main equipment case, to and model riser upper is connected with this driver module, namely give model riser top ends multi-form motion-activated by this driver module, touching territory, base area at this model standpipe is evenly arranged some displacement acquisitions point simultaneously, with collection model standpipe contact to earth district vertical deviation change, the motion of district's diverse location and stressing conditions thus research different excitation lower standing tube contacts to earth, and then provide reference for the global design of standpipe and analysis; On the other hand, by placing sea bed cast material bottom main equipment case, make the sea bed model of replaceable different materials, to study different seabed, pipeclay effect standpipe is contacted to earth the impact that position moves, further for the global design of standpipe and analysis provide more fully reference.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the structural representation of an embodiment of steel catenary riser holistic approach test unit of the present invention;

Fig. 2 is the side view of the steel catenary riser holistic approach test unit in Fig. 1;

Fig. 3 a, Fig. 3 b and Fig. 3 c be respectively in reflection Fig. 1 in steel catenary riser holistic approach test unit driver module give model riser top ends longitudinally, the schematic diagram of horizontal line and circumference excitation.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

See Fig. 1, for the structural representation of an embodiment of a kind of steel catenary riser holistic approach test unit of the present invention, particularly, in the present embodiment, this steel catenary riser holistic approach test unit comprises test box and model standpipe, wherein, this test box specifically comprises main equipment case 1, and is fixed on the extension casing 2 of main equipment case 1 side.

In the present embodiment, this main equipment case 1 top is fixed with driver module, extends bottom casing 2 and is provided with model sea bed 4 removably; The top of this model standpipe 9 is then connected with driver module, and bottom is placed on above-mentioned model sea bed 4, and end is fixed on extension casing 2 by fixed equipment 3.Also also force snesor is installed at this model standpipe 9 top in the present embodiment, its bottom is evenly distributed with multiple displacement transducer or force snesor, namely multiple collection point is set, contact to earth with collection model standpipe 9 the length travel change in district, and the displacement transducer of this model standpipe 9 bottom or force snesor are connected with the dynamic strain indicator be arranged on main equipment case 1.

Particularly, in the present embodiment, this driver module comprises: for providing the motor 8 driving power; For under the driving of above-mentioned motor 8, above-mentioned model standpipe 9 is driven to do longitudinal direction, or laterally, or the gear train of circular motion, respectively as Fig. 3 a, Fig. 3 b and Fig. 3 c, particularly, in the present embodiment, this gear train specifically comprises:

Removably be arranged on the slide rail 13 on main equipment case 1, and the installation direction of this slide rail 13 is for longitudinally to distribute, or cross direction profiles;

Longitudinal direction can be done on above-mentioned slide rail 13 under motor 8 drives, or the slide block 7 of transverse direction, and this slide block is connected with model standpipe 9 top.Particularly, be also provided with a draw-in groove 10 in main equipment case 1 top center in the present embodiment, and be provided with a connector 12 in this draw-in groove 10, then model riser top is then connected with motor 8 by this connector 12.When needs give model standpipe with longitudinal pumping, then slide rail 13 is longitudinally arranged, as Fig. 3 a, when then motor 8 drives slide block 7 to do lengthwise movement on the slide rail 13 longitudinally arranged by this connector 12, namely give model riser top longitudinal pumping, thus make this model riser top do lengthwise movement; When needs give model standpipe with transversely excited, then slide rail 13 is transversely arranged, as Fig. 3 b, when then motor 8 drives slide block 7 to do transverse movement on the slide rail 13 of horizontally set by this connector 12, namely give model riser top transversely excited, thus make this model riser top do transverse movement; Encourage with circumference when needs give model standpipe, then slide block 7 is removed, as Fig. 3 c, then motor 8 is directly with movable model standpipe to move in a circle in draw-in groove 10 by this connector 12, (or be interpreted as give model riser top with vertical excitation and transversely excited) simultaneously, thus this model riser top is moved in a circle; And then under being convenient to observe different excitation, standpipe contacts to earth the motion of district's diverse location and stressing conditions, and then provide reference for the global design of standpipe and analysis.

In the present embodiment, by test box being divided into two parts, i.e. main equipment case 1 and extension casing 2, thus saved space, also convenient mobile, and analogy model standpipe can be distinguished in atmosphere in this test box, or the dynamic response situation in water, makes its scope of application wider; And in the present embodiment, model sea bed 4 is installed removably, thus the model sea bed of different materials can be changed as required, to study different seabed, pipeclay effect standpipe be contacted to earth the impact that position moves.

Further, see Fig. 1, in the present embodiment, also extension casing 2 bottom even is provided with the multiple support bars 6 that can be used for regulating this extension casing 2 height.The present embodiment, by arranging support bar, namely regulates 6 to regulate the height extending casing 2 by support bar, thus the situation of the simulation different operating depth of water.

Above disclosedly be only present pre-ferred embodiments, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are done, still belong to the scope that invention is contained.

Claims (4)

1. a steel catenary riser holistic approach test unit, comprise test box and model standpipe, it is characterized in that, described test box comprises main equipment case (1), and be fixed on the extension casing (2) of described main equipment case (1) side, and described main equipment case (1) is connected with described extension casing (2), wherein, described main equipment case (1) top is fixed with driver module, and described main equipment case (1) bottom and described extension casing (2) bottom are provided with model sea bed (4) removably; The top of described model standpipe (9) is connected with described driver module, bottom is placed on described model sea bed (4), described model standpipe (9) top is also provided with force snesor, described model standpipe (9) bottom is evenly distributed with multiple displacement transducer or force snesor, and displacement transducer or the force snesor of described model standpipe (9) bottom are connected with the dynamic strain indicator be arranged on described main equipment case (1);
Described model riser top ends is at the zigzag tread patterns of described driver module, or laterally drive, or do lengthwise movement under circumference driving, or transverse movement, or circular motion, and received by described dynamic strain indicator and process the signal that described force snesor and/or displacement transducer gather, obtain described model bottom of vertical and to contact to earth the change in displacement information in district.
2. steel catenary riser holistic approach test unit as claimed in claim 1, it is characterized in that, described extension casing (2) bottom and described main equipment case (1) bottom are respectively arranged with the multiple support bars (6) that can be used for regulating height.
3. steel catenary riser holistic approach test unit as claimed in claim 1 or 2, it is characterized in that, described driver module comprises:
Be fixed on the motor on described main equipment case (1), for providing driving power;
Removably be arranged on the slide rail on described main equipment case (1), and the installation direction of described slide rail is for longitudinally to arrange, or transversely arranges;
The slide block be connected with described model standpipe (9) top, described slide block does longitudinal direction along described slide rail under described motor drives, or transverse movement.
4. steel catenary riser holistic approach test unit as claimed in claim 3, is characterized in that, the end of described model standpipe (9) is fixed on described extension casing (2) by fixed equipment (3).
CN201510310238.9A 2015-06-08 2015-06-08 A steel catenary standpipe integral analyzing and testing apparatus CN105021383A (en)

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CN102313636A (en) * 2011-08-02 2012-01-11 上海交通大学 Vortex-induced vibration simulation test device for deep sea riser model with movable top end under action of step flow
CN102645346A (en) * 2012-04-09 2012-08-22 浙江大学 Novel submarine pipe soil interaction model test platform
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Inventor after: Bai Xinglan

Inventor after: Yao Rui

Inventor after: Xie Yonghe

Inventor before: Bai Xinglan

Inventor before: Yao Rui

Inventor before: Xie Yonghe

Inventor before: Zheng Yangfei

Inventor before: Zhu Haifen

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Application publication date: 20151104

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