阅读说明：本技术 异型材和骨架层以及含该骨架层的海洋复合软管 (Special-shaped section bar, framework layer and marine composite hose containing framework layer ) 是由 陈严飞 何明畅 董绍华 刘昊 张晔 侯富恒 于 2021-01-14 设计创作，主要内容包括：本发明公开了一种异型材和骨架层以及含该骨架层的海洋复合软管,包括钢带；该钢带包括竖钢带体以及相对平行布置的两弯折钢带体,弯折钢带体包括顺次连接为一体的第一横臂、第一竖臂、第二横臂、第二竖臂、第三横臂和第三竖臂；第三横臂、第一横臂、第二横臂在水平方向由长到短分布且相互平行,第一至第三竖臂在竖直方向相互平行,第一竖臂、第二横臂和第二竖臂之间形成开口朝外的第一U型槽,第二竖臂、第三横臂和第三竖臂之间形成开口朝内的第二U型槽；竖钢带体连接在两第一横臂的端部之间,竖钢带体长度小于两第三横臂之间的竖向间距,两第三竖臂端部之间的间距大于两第二横臂的外壁面之间的竖向间距,第二横臂的长度大于第三竖臂的宽度。(The invention discloses a profiled bar, a framework layer and a marine composite hose containing the framework layer, which comprise a steel belt; the steel belt comprises a vertical steel belt body and two bent steel belt bodies which are arranged in parallel relatively, wherein each bent steel belt body comprises a first cross arm, a first vertical arm, a second cross arm, a second vertical arm, a third cross arm and a third vertical arm which are sequentially connected into a whole; the third cross arm, the first cross arm and the second cross arm are distributed from long to short in the horizontal direction and are parallel to each other, the first vertical arm to the third vertical arm are parallel to each other in the vertical direction, a first U-shaped groove with an outward opening is formed among the first vertical arm, the second cross arm and the second vertical arm, and a second U-shaped groove with an inward opening is formed among the second vertical arm, the third cross arm and the third vertical arm; the vertical steel strip body is connected between the end parts of the two first cross arms, the length of the vertical steel strip body is smaller than the vertical distance between the two third cross arms, the distance between the end parts of the two third vertical arms is larger than the vertical distance between the outer wall surfaces of the two second cross arms, and the length of the second cross arms is larger than the width of the third vertical arms.)

1. A profiled bar, characterized by: comprises a steel belt with a similar Lu-shaped section; the steel belt comprises a vertical steel belt body and two bending steel belt bodies which are arranged in parallel relatively,

the bent steel strip body comprises a first cross arm, a first vertical arm, a second cross arm, a second vertical arm, a third cross arm and a third vertical arm which are sequentially connected into a whole; the third cross arm, the first cross arm and the second cross arm are distributed from long to short in the horizontal direction and are parallel to each other, the first vertical arm, the second vertical arm and the third vertical arm are parallel to each other in the vertical direction, the second vertical arm is longer than the third vertical arm, a first U-shaped groove with an outward opening is formed among the first vertical arm, the second cross arm and the second vertical arm, and a second U-shaped groove with an inward opening is formed among the second vertical arm, the third cross arm and the third vertical arm;

the vertical steel strip body is connected between the end portions of the two first cross arms, the length of the vertical steel strip body is smaller than the vertical distance between the two third cross arms, the distance between the end portions of the two third vertical arms is larger than the vertical distance between the outer wall surfaces of the two second cross arms, and the length of the second cross arm is larger than the width of the third vertical arm.

2. A profile according to claim 1, wherein: the two bent steel strip bodies are symmetrical about the horizontal center line of the vertical steel strip body, a first gap is reserved between the inner wall surfaces of the two second cross arms, and the first gap is one twelfth of the thickness of the steel strip.

3. A profile according to claim 1, wherein: the joint of the inner wall surface of the vertical steel belt body and the inner wall surface of the first cross arm is arc-shaped, and the joint of the outer wall surface of the vertical steel belt body and the outer wall surface of the first cross arm is arc-shaped.

4. A profile according to claim 1, wherein: the joint of the inner wall surface of the first cross arm and the inner wall surface of the first vertical arm is arc-shaped, and the joint of the outer wall surface of the first cross arm and the outer wall surface of the first vertical arm is arc-shaped;

the joint of the inner wall surface of the first vertical arm and the inner wall surface of the second cross arm is arc-shaped, and the joint of the outer wall surface of the first vertical arm and the outer wall surface of the second cross arm is arc-shaped;

the joint of the inner wall surface of the second cross arm and the inner wall surface of the second vertical arm is arc-shaped, and the joint of the outer wall surface of the second cross arm and the outer wall surface of the second vertical arm is arc-shaped;

the joint of the inner wall surface of the second vertical arm and the inner wall surface of the third cross arm is arc-shaped, and the joint of the outer wall surface of the second vertical arm and the outer wall surface of the third cross arm is arc-shaped;

the joint of the inner wall surface of the third cross arm and the inner wall surface of the third vertical arm is arc-shaped, and the joint of the outer wall surface of the third cross arm and the outer wall surface of the third vertical arm is arc-shaped;

the end face of the third vertical arm is arc-shaped.

5. A scaffold layer, comprising: a plurality of profiled bars as claimed in any one of claims 1 to 4 are wound and interlocked, namely, a rectangular frame body formed by two first cross arms, two first vertical arms and a vertical steel strip body of the second profiled bar is embedded in a C-shaped groove body formed by two second U-shaped grooves of the first profiled bar, and the like so as to form a winding and interlocking structure.

6. The carcass layer according to claim 5, wherein: when a rectangular frame body formed by enclosing the two first cross arms, the two first vertical arms and the vertical steel strip body is embedded in a C-shaped groove body formed by enclosing the two second U-shaped grooves of the first profiled bar, a second gap is reserved between the inner wall surfaces of the two second vertical arms of the first profiled bar and the outer wall surface of the vertical steel strip body of the second profiled bar; the inner wall surfaces of the two third cross arms of the first profiled bar correspond to the outer wall surfaces of the two first cross arms of the second profiled bar, and a second gap is reserved; the inner wall surfaces of the two third vertical arms of the first profiled bar and the outer wall surfaces of the two first vertical arms of the second profiled bar are correspondingly reserved with second gaps, and the outer wall surfaces of the two third vertical arms of the first profiled bar and the outer wall surfaces of the two second vertical arms of the second profiled bar are correspondingly reserved with second gaps; and a second gap is reserved between the end surfaces of the two third vertical arms of the first profiled bar and the outer wall surfaces of the two second cross arms of the second profiled bar, wherein the second gap is one fourth of the thickness of the steel strip, and the other profiled bars are wound and interlocked.

7. The carcass layer according to claim 5, wherein: the special-shaped material is a stainless steel strip and is of a hollow structure, and a rectangular cavity generated by bending the stainless steel strip is filled with a heat-resistant material, a high-strength material or an insulating material.

8. A marine composite hose comprises a framework layer, an inner liner layer, an interlocking compression-resistant armor layer, a non-interlocking compression-resistant armor layer, a first wear-resistant layer, a first tensile armor layer, a second wear-resistant layer, a second tensile armor layer and an outer coating layer in sequence from inside to outside; the carcass layer according to any one of claims 5 to 7.

Technical Field

The invention relates to a profiled bar and a framework layer, in particular to a profiled bar and a framework layer for a marine composite hose.

Background

With the rapid development of economic society, the demand of human beings on petroleum energy is increasing day by day, so onshore and shallow sea oil and gas reservoir resources cannot meet the demand of human beings, the development of ocean oil and gas is also shifted from shallow sea to deep sea area, and the deep sea oil and gas engineering is continuously developed. The south China sea is one of four ocean oil and gas resource areas in the world, and the oil and gas reserves of the south China sea approximately account for 1/3 of the total oil and gas resources of China. Therefore, it is necessary to develop advanced and reliable deepwater development equipment for oil and gas exploitation.

In recent years, non-bonded flexible hoses are used as marine oil and gas development and transportation carriers in various countries, and the pipeline has the main advantages of excellent mechanical property, capability of coping with marine complex loads, good corrosion resistance, strong adaptability to submarine topography and topography, high laying speed, low construction cost, difficulty in wax deposition and capability of recycling pipes. Due to the excellent characteristics, the non-bonding flexible pipeline gradually becomes an important conveying carrier for deepwater oil and gas development. The non-bonding composite hose is a composite pipe body structure generally composed of a framework layer, an inner liner layer, a compression-resistant armor layer, a wear-resistant layer, a tensile armor layer, an insulating layer, an outer jacket layer and the like, wherein the framework layer mainly resists external pressure load and provides enough radial rigidity to support the inner liner pipe, so that structural crushing damage caused by excessive hydrostatic pressure and external pressure is prevented.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a profiled bar and a skeleton layer, and a marine composite hose including the skeleton layer, wherein the profiled bar and the skeleton layer are connected in an interlocking winding manner, and a certain gap is left between the interlocking units to allow the interlocking units to move relatively, so that the composite hose has good flexibility, and can resist external loads through certain deformation, so that the composite hose can be applied to a complex deepwater environment.

In order to achieve the purpose, the invention adopts the following technical scheme: a profiled bar comprises a steel belt with a similar-Lu-shaped section; the steel belt comprises a vertical steel belt body and two bending steel belt bodies which are arranged in parallel relatively,

the bent steel strip body comprises a first cross arm, a first vertical arm, a second cross arm, a second vertical arm, a third cross arm and a third vertical arm which are sequentially connected into a whole; the third cross arm, the first cross arm and the second cross arm are distributed from long to short in the horizontal direction and are parallel to each other, the first vertical arm, the second vertical arm and the third vertical arm are parallel to each other in the vertical direction, the second vertical arm is longer than the third vertical arm, a first U-shaped groove with an outward opening is formed among the first vertical arm, the second cross arm and the second vertical arm, and a second U-shaped groove with an inward opening is formed among the second vertical arm, the third cross arm and the third vertical arm;

the vertical steel strip body is connected between the end portions of the two first cross arms, the length of the vertical steel strip body is smaller than the vertical distance between the two third cross arms, the distance between the end portions of the two third vertical arms is larger than the vertical distance between the outer wall surfaces of the two second cross arms, and the length of the second cross arm is larger than the width of the third vertical arm.

In some embodiments, the two bent steel strip bodies are symmetrical about a horizontal center line of the vertical steel strip body, and a first gap is reserved between the inner wall surfaces of the two second cross arms, and the first gap is one twelfth of the thickness of the steel strip.

In some embodiments, the junction of the inner wall surface of the vertical steel band body and the inner wall surface of the first cross arm is arcuate, and the junction of the outer wall surface of the vertical steel band body and the outer wall surface of the first cross arm is arcuate.

In some embodiments, the junction of the inner wall surface of the first cross arm and the inner wall surface of the first vertical arm is arc-shaped, and the junction of the outer wall surface of the first cross arm and the outer wall surface of the first vertical arm is arc-shaped;

the joint of the inner wall surface of the first vertical arm and the inner wall surface of the second cross arm is arc-shaped, and the joint of the outer wall surface of the first vertical arm and the outer wall surface of the second cross arm is arc-shaped;

the joint of the inner wall surface of the second cross arm and the inner wall surface of the second vertical arm is arc-shaped, and the joint of the outer wall surface of the second cross arm and the outer wall surface of the second vertical arm is arc-shaped;

the joint of the inner wall surface of the second vertical arm and the inner wall surface of the third cross arm is arc-shaped, and the joint of the outer wall surface of the second vertical arm and the outer wall surface of the third cross arm is arc-shaped.

The joint of the inner wall surface of the third cross arm and the inner wall surface of the third vertical arm is arc-shaped, and the joint of the outer wall surface of the third cross arm and the outer wall surface of the third vertical arm is arc-shaped;

the end face of the third vertical arm is arc-shaped.

The invention also provides a framework layer which is formed by winding and interlocking a plurality of profiles in any embodiment, namely a rectangular frame body formed by enclosing two first cross arms, two first vertical arms and a vertical steel belt body of a second profile is embedded in a C-shaped groove body formed by enclosing two second U-shaped grooves of the first profile, and the like so as to form a winding and interlocking structure.

In some embodiments, when the rectangular frame body surrounded by the two first cross arms, the two first vertical arms and the vertical steel strip body is embedded in the C-shaped groove body surrounded by the two second U-shaped grooves of the first profiled bar, a second gap is reserved between the inner wall surfaces of the two second vertical arms of the first profiled bar and the outer wall surface of the vertical steel strip body of the second profiled bar; the inner wall surfaces of the two third cross arms of the first profiled bar correspond to the outer wall surfaces of the two first cross arms of the second profiled bar, and a second gap is reserved; the inner wall surfaces of the two third vertical arms of the first profiled bar and the outer wall surfaces of the two first vertical arms of the second profiled bar are correspondingly reserved with second gaps, and the outer wall surfaces of the two third vertical arms of the first profiled bar and the outer wall surfaces of the two second vertical arms of the second profiled bar are correspondingly reserved with second gaps; and a second gap is reserved between the end surfaces of the two third vertical arms of the first profiled bar and the outer wall surfaces of the two second cross arms of the second profiled bar, wherein the second gap is one fourth of the thickness of the steel strip, and the other profiled bars are wound and interlocked.

In some embodiments, the profiled bar is made of a stainless steel strip and has a hollow structure, and a rectangular cavity formed by bending the stainless steel strip is filled with a heat-resistant material, a high-strength material or an insulating material.

In addition, the invention also provides a marine composite hose which sequentially comprises a framework layer, a lining layer, an interlocking compression-resistant armor layer, a non-interlocking compression-resistant armor layer, a first wear-resistant layer, a first tensile armor layer, a second wear-resistant layer, a second tensile armor layer and an outer coating layer from inside to outside; the skeleton layer is the skeleton layer in any of the above embodiments.

By adopting the technical scheme, the invention has the following advantages: 1. the section of the special-shaped section provided by the invention is of a similar 'Lu' shape, and comprises two bending steel belt bodies which are arranged in parallel relatively, a vertical steel belt body connected between first cross arms of the two bending steel belt bodies, and a rectangular frame body formed by enclosing the two first cross arms, the two first vertical arms and the vertical steel belt body, wherein two second U-shaped grooves on the two bending steel belt bodies form a C-shaped groove body, and the rectangular frame body can be movably embedded in the C-shaped groove body, so that the special-shaped sections are wound and interlocked to form a skeleton layer, and the skeleton layer is of a double-layer structure, so that the mechanical property of the skeleton layer is greatly improved, and the skeleton layer can effectively resist the external pressure of still water. 2. According to the invention, the gap between the outer wall surfaces of the two third vertical arms on the first profiled bar and the outer wall surfaces of the two second vertical arms on the second profiled bar is only one fourth of the thickness of the steel strip, namely, the groove formed on the inner surface of the framework layer is smaller, so that the generation of eddy in the framework layer can be effectively reduced, the internal oil-gas medium is conveyed more smoothly, and the oil-gas medium conveying efficiency is improved. 3. Because a certain gap exists between the interlocking units (the rectangular frame bodies and the C-shaped groove bodies which are mutually embedded), relative motion can be generated between the profiled bars, so that when the framework layer formed by winding and interlocking the profiled bars is applied to the marine composite hose, the composite hose has good flexibility, can resist external load through certain deformation, and can be applied to a complex deepwater environment. 4. The profiled bar is hollow inside, can be filled with heat-resistant materials to weaken heat exchange between the pipeline and the surrounding environment, and can also be filled with other materials to provide extra strength or insulation performance according to needs. 5. The connecting part of the end surfaces of the arms on the special-shaped section bars is round and arc-shaped, so that when two adjacent special-shaped section bars are wound and interlocked through the rectangular frame body and the C-shaped groove body, the end surfaces of the arms of the two special-shaped section bars are in smooth transition, the flexibility of the marine composite hose is improved, scratches generated when the marine composite hose is bent are avoided, the safety of a pipeline is ensured, and the service life of the pipeline is prolonged.

Drawings

Fig. 1 is a schematic structural view of a profiled bar according to the present invention;

FIG. 2 is a schematic view of the construction of a carcass layer according to the invention;

fig. 3 is a schematic structural view of the marine composite hose of the present invention.

Detailed Description

The invention is described in detail below with reference to the figures and examples. It is to be understood, however, that the drawings are provided solely for the purposes of promoting an understanding of the invention and that they are not to be construed as limiting the invention.

As shown in fig. 1, the profiled bar of the present invention comprises a steel strip 10 having a cross-section similar to a "lu"; the steel strip 10 comprises a vertical steel strip body 110 and two bent steel strip bodies 120 arranged in parallel,

the bending steel belt body 120 comprises a first cross arm 121, a first vertical arm 122, a second cross arm 123, a second vertical arm 124, a third cross arm 125 and a third vertical arm 126 which are sequentially connected into a whole; the third cross arm 125, the first cross arm 121 and the second cross arm 123 are distributed from long to short in the horizontal direction and are parallel to each other, the first vertical arm 122, the second vertical arm 124 and the third vertical arm 126 are parallel to each other in the vertical direction, the second vertical arm 124 is longer than the third vertical arm 126, a first U-shaped groove with an outward opening is formed among the first vertical arm 122, the second cross arm 123 and the second vertical arm 124, and a second U-shaped groove with an inward opening is formed among the second vertical arm 124, the third cross arm 125 and the third vertical arm 126;

the vertical steel band body 110 is connected between the ends of the two first cross arms 121, the length of the vertical steel band body 110 is smaller than the vertical distance between the two third cross arms 125, the distance between the ends of the two third vertical arms 126 is larger than the vertical distance between the outer wall surfaces 123b of the two second cross arms 123, and the length of the second cross arms 123 is larger than the width of the third vertical arms 126.

In the above embodiment, preferably, the two bent steel strip bodies 120 are symmetrical about the horizontal center line of the vertical steel strip body 110, and a first gap is left between the inner wall surfaces 123a of the two second crossbars 123, specifically, the first gap is one twelfth of the thickness of the steel strip 10.

In the above embodiment, the vertical steel strip body 110 and the two bent steel strip bodies 120 are preferably equal in thickness.

In the above embodiment, it is preferable that the junction between the inner wall surface 110a of the vertical steel band body 110 and the inner wall surface 121a of the first horizontal arm 121 is curved, and the junction between the outer wall surface 110b of the vertical steel band body 110 and the outer wall surface 121b of the first horizontal arm 121 is curved.

In the above embodiment, it is preferable that the junction between the inner wall surface 121a of the first horizontal arm 121 and the inner wall surface 122a of the first vertical arm 122 is curved, and the junction between the outer wall surface 121b of the first horizontal arm 121 and the outer wall surface 122b of the first vertical arm 122 is curved.

In the above embodiment, it is preferable that the junction between the inner wall surface 122a of the first vertical arm 122 and the inner wall surface 123a of the second horizontal arm 123 is curved, and the junction between the outer wall surface 122b of the first vertical arm 122 and the outer wall surface 123b of the second horizontal arm 123 is curved.

In the above embodiment, it is preferable that the junction between the inner wall surface 123a of the second horizontal arm 123 and the inner wall surface 124a of the second vertical arm 124 is curved, and the junction between the outer wall surface 123b of the second horizontal arm 123 and the outer wall surface 124b of the second vertical arm 124 is curved.

In the above embodiment, it is preferable that the junction between the inner wall surface 124a of the second vertical arm 124 and the inner wall surface 125a of the third horizontal arm 125 is curved, and the junction between the outer wall surface 124b of the second vertical arm 124 and the outer wall surface 125b of the third horizontal arm 125 is curved.

In the above embodiment, it is preferable that the junction between the inner wall surface 125a of the third horizontal arm 125 and the inner wall surface 126a of the third vertical arm 126 is curved, and the junction between the outer wall surface 125b of the third horizontal arm 125 and the outer wall surface 126b of the third vertical arm 126 is curved.

In the above embodiment, preferably, the end surface of the third vertical arm 126 is circular arc-shaped.

As shown in fig. 2, the present invention further provides a framework layer, which is formed by winding and interlocking a plurality of profiles in any of the above embodiments, that is, a rectangular frame body defined by two first horizontal arms 121, two first vertical arms 122 and a vertical steel strip body 110 of a second profile ii is embedded in a C-shaped groove body defined by two second U-shaped grooves of a first profile i, and so on, so as to form a winding and interlocking structure.

In the above embodiment, preferably, when the rectangular frame surrounded by the two first cross arms 121, the two first vertical arms 122 and the vertical steel strip body 110 is embedded in the C-shaped groove surrounded by the two second U-shaped grooves of the first profiled bar i, a second gap is reserved between the inner wall surfaces 124a of the two second vertical arms 124 of the first profiled bar i and the outer wall surface 110b of the vertical steel strip body 110 of the second profiled bar ii; a second gap is reserved between the inner wall surfaces 125a of the two third cross arms 125 of the first profiled bar I and the outer wall surfaces 121b of the two first cross arms 121 of the second profiled bar II; a second gap is reserved between the inner wall surfaces 126a of the two third vertical arms 126 of the first profile I and the outer wall surfaces 122b of the two first vertical arms 122 of the second profile II, and a second gap is reserved between the outer wall surfaces 126b of the two third vertical arms 126 of the first profile I and the outer wall surfaces 124b of the two second vertical arms 124 of the second profile II; the end surfaces of the two third vertical arms 126 of the first profile I and the outer wall surfaces 123b of the two second cross arms 123 of the second profile II are correspondingly provided with a second gap, the second gap is one fourth of the thickness of the steel strip 10, and the rest of the profiles which are wound and interlocked are also reserved.

In the above embodiment, preferably, the material of the profiled bar is a stainless steel strip and has a hollow structure, and a rectangular cavity generated by bending the stainless steel strip is filled with a thermal resistance material, a high-strength material or an insulating material, so that the thermal resistance material can provide good thermal insulation performance, the high-strength material can provide extra strength, and the insulating material can provide good insulating performance, so that the formed framework layer has good adaptability.

Additionally, as shown in fig. 3, based on the framework layer in any of the above embodiments, the present invention further provides a marine composite hose, which comprises, from inside to outside, a framework layer 1, an inner liner layer 2, an interlocking compressive armor layer 3, a non-interlocking compressive armor layer 4, a first wear layer 5, a first tensile armor layer 6, a second wear layer 7, a second tensile armor layer 8, and an outer cladding layer 9; the framework layer 1 is formed by winding and interlocking the plurality of profiled bars.

The present invention has been described with reference to the above embodiments, and the structure, arrangement, and connection of the respective members may be changed. On the basis of the technical scheme of the invention, the improvement or equivalent transformation of the individual components according to the principle of the invention is not excluded from the protection scope of the invention.