阅读说明：本技术 一种用于海洋复合软管的x型异型材和抗压铠装层 (X-shaped profile and compression-resistant armor layer for marine composite hose ) 是由 陈严飞 何明畅 董绍华 阎宇峰 宗优 张晔 刘昊 于 2021-07-15 设计创作，主要内容包括：本发明涉及一种用于海洋复合软管的X型异型材、抗压铠装层及软管,该异型材包括横截面呈X型的钢带,钢带包括第一U型长臂、第一U型短臂、第二U型短臂、第二U型长臂和连接臂；该抗压铠装层由若干上述异型材缠绕互锁而成；海洋复合软管包括由内至外依次设置的骨架层、内衬层、抗压铠装层、第一耐磨层、第一抗拉铠装层、第二耐磨层、第二抗拉铠装层、防径向屈曲层和外包覆层。本发明的异型材通过缠绕互锁连接,可有效防止抗压铠装层相邻钢带间发生滑脱,互锁结构之间有间隙允许相对滑动,保证海洋复合软管具有良好的柔性,通过发生动态移动变形来抵御内压载荷,适用于深海恶劣的海洋环境。(The invention relates to an X-shaped profiled bar, a compression-resistant armor layer and a hose for an ocean composite hose, wherein the profiled bar comprises a steel belt with an X-shaped cross section, and the steel belt comprises a first U-shaped long arm, a first U-shaped short arm, a second U-shaped long arm and a connecting arm; the pressure-resistant armor layer is formed by winding and interlocking a plurality of the profiled bars; the marine composite hose comprises a framework layer, a lining layer, a pressure-resistant armor layer, a first wear layer, a first tensile armor layer, a second wear layer, a second tensile armor layer, a radial buckling prevention layer and an outer coating layer which are sequentially arranged from inside to outside. The profiled bars are connected in a winding and interlocking manner, so that the slippage between adjacent steel belts of the compression-resistant armor layer can be effectively prevented, a gap is reserved between the interlocking structures to allow relative sliding, the marine composite hose is ensured to have good flexibility, the internal pressure load is resisted by dynamic movement deformation, and the marine composite hose is suitable for the severe marine environment in deep sea.)

1. The X-shaped profiled bar for the marine composite hose is characterized by comprising a steel belt (10) with an X-shaped cross section, wherein the steel belt (10) comprises a first U-shaped long arm (110), a first U-shaped short arm (120), a second U-shaped short arm (140), a second U-shaped long arm (150) and a connecting arm (130) which are integrally arranged;

the opening of the first U-shaped long arm (110) faces downwards, and the first U-shaped long arm comprises a first cross arm (112) and a first vertical arm (111) and a second vertical arm (113) which are parallel to each other and connected to two ends of the first cross arm (112);

the opening of the first U-shaped short arm (120) faces upwards and is arranged opposite to the first U-shaped long arm (110), and the first U-shaped short arm comprises a second cross arm (122), and a third vertical arm (121) and a fourth vertical arm (123) which are parallel to each other and connected to two ends of the second cross arm (122);

the opening of the second U-shaped short arm (140) faces downwards and is arranged adjacent to the first U-shaped long arm (110), and the second U-shaped short arm comprises a fourth cross arm (142) and a fifth vertical arm (141) and a sixth vertical arm (143) which are parallel to each other and connected to two ends of the fourth cross arm (142);

the opening of the second U-shaped long arm (150) faces upwards and is arranged opposite to the second U-shaped short arm (140), and the second U-shaped long arm comprises a fifth cross arm (152) and a seventh vertical arm (151) and an eighth vertical arm (153) which are parallel to each other and connected to two ends of the fifth cross arm (152);

the connecting arm (130) is arranged among the first U-shaped long arm (110), the first U-shaped short arm (120), the second U-shaped short arm (140) and the second U-shaped long arm (150), the left end of the connecting arm (130) is vertically connected with the second vertical arm (113) and the fourth vertical arm (123), and the right end of the connecting arm (130) is vertically connected with the fifth vertical arm (141) and the seventh vertical arm (151);

the first U-shaped long arm (110), the first U-shaped short arm (120), the second U-shaped short arm (140) and the second U-shaped long arm (150) are arranged in a central symmetry mode around the connecting arm (130);

the width of the first vertical arm (111) is smaller than the transverse distance between the second vertical arm (113) and the fifth vertical arm (141), and the width of the eighth vertical arm (153) is smaller than the transverse distance between the fourth vertical arm (123) and the seventh vertical arm (151); the width of the third vertical arm (121) is smaller than the transverse distance between the fifth vertical arm (141) and the sixth vertical arm (143), and the width of the sixth vertical arm (143) is smaller than the transverse distance between the third vertical arm (121) and the fourth vertical arm (123); the width of the second cross arm (122) is smaller than the vertical distance between the lower end surface of the sixth vertical arm (143) and the upper end surface of the fifth cross arm (152), and the width of the fourth cross arm (142) is smaller than the vertical distance between the upper end surface of the third vertical arm (121) and the lower end surface of the first cross arm (112);

the first vertical arm (111) and the eighth vertical arm (153) are equal in length, and the third vertical arm (121) and the sixth vertical arm (143) are equal in length; the first cross arm (112) and the fifth cross arm (152) are equal in length, and the second cross arm (122) and the fourth cross arm (142) are equal in length; the second vertical arm (113) and the seventh vertical arm (151) are equal in length, and the fourth vertical arm (123) and the fifth vertical arm (141) are equal in length;

the first vertical arm (111), the second vertical arm (113), the third vertical arm (121), the fourth vertical arm (123), the fifth vertical arm (141), the sixth vertical arm (143), the seventh vertical arm (151), the eighth vertical arm (153), the first cross arm (112), the second cross arm (122), the fourth cross arm (142) and the fifth cross arm (152) are equal in width and are all five-ninth of the width of the connecting arm (130).

2. An X-shaped profile according to claim 1, wherein the corner edges (1111, 1112) of the first vertical arm (111) are rounded off and the connection (1121, 1122) between the first vertical arm (111) and the first transverse arm (112) is rounded off; the corner edges (1531, 1532) of the eighth vertical arm (153) are in fillet transition, and the joints (1521, 1522) between the eighth vertical arm (153) and the fifth cross arm (152) are in fillet transition.

3. An X-profile according to claim 1, wherein the corner edges (1211, 1212) of the third vertical arm (121) are rounded off, and the junctions (1221, 1222) between the third vertical arm (121) and the second transverse arm (122) are rounded off; the corner edges (1431, 1432) of the sixth vertical arm (143) are in fillet transition, and the joints (1421, 1422) between the sixth vertical arm (143) and the fourth cross arm (142) are in fillet transition.

4. An X-shaped profile according to claim 1, wherein the joints (1131, 1132) between the first transverse arm (112) and the second vertical arm (113) are rounded transitions; the joints (1511, 1512) between the fifth cross arm (152) and the seventh vertical arm (151) are in fillet transition; the joints (1231, 1232) between the second cross arm (122) and the fourth vertical arm (123) are in fillet transition; and the joints (1411, 1412) between the fourth cross arm (142) and the fifth vertical arm (141) are in fillet transition.

5. An X-shaped profile according to claim 1, wherein the joints (1311, 1312, 1313, 1314) between the second vertical arm (113), the fourth vertical arm (123), the fifth vertical arm (141), the seventh vertical arm (151) and the connecting arm (130) are rounded.

6. A pressure-resistant armor layer for a marine composite hose, characterized in that the pressure-resistant armor layer is formed by winding and interlocking a plurality of X-shaped profiles according to any one of claims 1 to 5, namely, a first vertical arm (111) of a second X-shaped profile (II) is embedded in a groove formed by a second vertical arm (113), a connecting arm (130) and a fifth vertical arm (141) of a first X-shaped profile (I), a third vertical arm (121) of the second X-shaped profile (II) is mutually buckled with a sixth vertical arm (143) of the first X-shaped profile (I), an eighth vertical arm (153) of the first X-shaped profile (I) is embedded in a groove formed by a fourth vertical arm (123), a connecting arm (130) and a seventh vertical arm (151) of the second X-shaped profile (II), and the like, so as to form a winding and interlocking structure.

7. The pressure resistant armor according to claim 6, wherein when the first X-shaped profile (I) and the second X-shaped profile (II) are wound and interlocked, a transverse gap is reserved between a right end face of the second vertical arm (113) of the first X-shaped profile (I) and a left end face of the first vertical arm (111) of the second X-shaped profile (II), a vertical gap is reserved between an upper end face of the connecting arm (130) of the first X-shaped profile (I) and a lower end face of the first vertical arm (111) of the second X-shaped profile (II), a transverse gap is reserved between a left end face of the fifth vertical arm (141) of the first X-shaped profile (I) and a first vertical arm (111) of the second X-shaped profile (II), a vertical gap is reserved between an upper end face of the fourth transverse arm (142) of the first X-shaped profile (I) and a lower end face of the first transverse arm (112) of the second X-shaped profile (II), a transverse gap is reserved between the right end face of a sixth vertical arm (143) of the first X-shaped profile (I) and the left end faces of a second vertical arm (113) and a fourth vertical arm (123) of the second X-shaped profile (II), a vertical gap is reserved between the lower end face of the sixth vertical arm (143) of the first X-shaped profile (I) and the upper end face of a second transverse arm (122) of the second X-shaped profile (II), a transverse gap is reserved between the left end face of the sixth vertical arm (143) of the first X-shaped profile (I) and the right end face of a third vertical arm (121) of the second X-shaped profile (II), a vertical gap is reserved between the lower end face of a fourth transverse arm (142) of the first X-shaped profile (I) and the upper end face of a third vertical arm (121) of the second X-shaped profile (II), a vertical gap is reserved between the right end face of a fifth vertical arm (141) and a seventh vertical arm (151) of the first X-shaped profile (I) and the left end face of the second vertical arm (121) of the second X-shaped profile (II), and a transverse arm (121) of the first X-shaped profile (I) of the second X-shaped profile (II) are arranged in a vertical profile (I), and a transverse arm (151) of the transverse arm of the second vertical profile (I) and a transverse arm (151) of the second vertical profile (I) of the second vertical arm (I) of the transverse arm (151) of the transverse arm (I) of the transverse arm (121) of the transverse arm (I) of the transverse arm (151) of the transverse arm (I) of the transverse arm (II) of the transverse arm (I) of the transverse arm of the transverse gap of the transverse arm (I) of the transverse arm of the transverse gap of the transverse arm (I) of the transverse arm (I) of the transverse arm (143) of the transverse arm (I) of the transverse arm A transverse gap is reserved, a vertical gap is reserved between the upper end face of a fifth cross arm (152) of the first X-shaped profile (I) and the lower end face of a second cross arm (122) of the second X-shaped profile (II), a transverse gap is reserved between the left end face of an eighth vertical arm (153) of the first X-shaped profile (I) and the right end face of a fourth vertical arm (123) of the second X-shaped profile (II), a vertical gap is reserved between the upper end face of an eighth vertical arm (153) of the first X-shaped profile (I) and the lower end face of a connecting arm (130) of the second X-shaped profile (II), and a transverse gap is reserved between the right end face of the eighth vertical arm (153) of the first X-shaped profile (I) and the left end face of a seventh vertical arm (151) of the second X-shaped profile (II);

and the width of the transverse gap is equal to that of the vertical gap, and is one fifth of that of the first vertical arm (111), and the rest of the X-shaped profiles wound and interlocked with each other are also wound.

8. The pressure-resistant armor according to claim 6, wherein an elastic composite layer (11) is bonded to the contact interface of two adjacent X-shaped profiles, the elastic composite layer (11) is sequentially bonded with the steel strip (10) through the left end surface of a first vertical arm (111), the lower end surface of the first vertical arm (111), the right end surface of the first vertical arm (111), the lower end surface of a first cross arm (112), the left end surface of a second vertical arm (113), the left end surface of a fourth vertical arm (123), the upper end surface of a second cross arm (122), the right end surface of a third vertical arm (121), the upper end surface of the third vertical arm (121), the left end surface of the third vertical arm (121), the lower end surface of the second cross arm (122), the right end surface of the fourth vertical arm (123), the lower end surface of a connecting arm (130) and the left end surface of a seventh vertical arm (151), and the thickness of the elastic composite layer (11) is one fifth of the width of the first vertical arm (111).

9. The marine composite hose comprises a framework layer (1), an inner liner layer (2), a pressure-resistant armor layer (3), a first wear-resistant layer (4), a first tensile armor layer (5), a second wear-resistant layer (6), a second tensile armor layer (7), a radial buckling prevention layer (8) and an outer cladding layer (9) which are sequentially arranged from inside to outside, and is characterized in that the pressure-resistant armor layer (3) is the pressure-resistant armor layer according to any one of claims 6 to 8.

Technical Field

The invention relates to an ocean composite hose, in particular to an X-shaped profile and a compression-resistant armor layer for an ocean composite hose, and belongs to the technical field of ocean oil and gas resource transportation.

Background

With the increasing development of ocean oil and gas resources in recent years, the development center of gravity gradually turns to deep sea areas. The oil and gas transmission pipeline needs to cope with a more complex and severe deep sea environment, and the traditional rigid pipeline used on land in a large scale is difficult to be competent for the oil and gas transmission task in the deep sea. The marine composite hose has the advantages of good flexibility, strong corrosion resistance, strong adaptability and the like, and gradually replaces a rigid pipe in recent years to become key conveying equipment in the field of marine oil and gas field development.

The marine composite hose is formed by compounding metal and non-metal polymers, and layers can move relatively, so that the marine composite hose has good flexibility. When the marine engine is subjected to environmental load, large bending, compression and tensile deformation can be generated, and the marine engine can better adapt to the complex marine environment. The typical marine composite hose structure sequentially comprises a framework layer, a lining layer, a 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 covering layer from inside to outside. The pressure-resistant armor layer is used as an important metal layer for bearing the internal pressure of the pipeline and providing enough radial rigidity for the pipeline. The compression-resistant armor layer is formed by interlocking a series of steel belts in sequence along the tubular shaft, and gaps exist between the adjacent steel belts and can move relatively. In the operation process, the steel belts can continuously collide with each other, fretting fatigue is generated, and the service life of the steel belts is seriously influenced. In addition, the inner liner may be inserted into the gap between the steel bands of the pressure-resistant armor, resulting in breakage and fluid leakage in the pipe.

Disclosure of Invention

In view of the above problems, it is an object of the present invention to provide an X-shaped profiled bar for a marine composite hose, the profiled bar being interlocked and wound, and a certain gap being left between the interlocking units to allow the interlocking units to move relatively, so that the marine composite hose has good flexibility and is not easy to be unlocked, and can resist external pressure load through a certain deformation, and can be applied to a complicated deepwater environment; the second purpose of the invention is to provide a pressure-resistant armor layer formed by winding and interlocking a plurality of the profiled bars; a third object of the invention is to provide a marine composite hose comprising the above pressure resistant armour layer.

In order to achieve the purpose, the invention adopts the following technical scheme: an X-shaped profiled bar for an ocean composite hose comprises a steel belt with an X-shaped cross section, wherein the steel belt comprises a first U-shaped long arm, a first U-shaped short arm, a second U-shaped long arm and a connecting arm which are integrally arranged;

the opening of the first U-shaped long arm faces downwards, and the first U-shaped long arm comprises a first cross arm, a first vertical arm and a second vertical arm, wherein the first vertical arm and the second vertical arm are parallel to each other and connected to two ends of the first cross arm;

the opening of the first U-shaped short arm faces upwards, the first U-shaped short arm is arranged opposite to the first U-shaped long arm, and the first U-shaped short arm comprises a second cross arm, a third vertical arm and a fourth vertical arm which are parallel to each other and connected to two ends of the second cross arm;

the opening of the second U-shaped short arm faces downwards and is arranged adjacent to the first U-shaped long arm, and the second U-shaped short arm comprises a fourth cross arm, a fifth vertical arm and a sixth vertical arm which are parallel to each other and connected to two ends of the fourth cross arm;

the opening of the second U-shaped long arm faces upwards, the second U-shaped long arm is arranged opposite to the second U-shaped short arm, and the second U-shaped long arm comprises a fifth cross arm, a seventh vertical arm and an eighth vertical arm which are parallel to each other and connected to two ends of the fifth cross arm;

the connecting arm is arranged among the first U-shaped long arm, the first U-shaped short arm, the second U-shaped short arm and the second U-shaped long arm, the left end of the connecting arm is vertically connected with the second vertical arm and the fourth vertical arm, and the right end of the connecting arm is vertically connected with the fifth vertical arm and the seventh vertical arm;

the first U-shaped long arm, the first U-shaped short arm, the second U-shaped short arm and the second U-shaped long arm are arranged in a centrosymmetric manner relative to the connecting arm;

the width of the first vertical arm is smaller than the transverse distance between the second vertical arm and the fifth vertical arm, and the width of the eighth vertical arm is smaller than the transverse distance between the fourth vertical arm and the seventh vertical arm; the width of the third vertical arm is smaller than the transverse distance between the fifth vertical arm and the sixth vertical arm, and the width of the sixth vertical arm is smaller than the transverse distance between the third vertical arm and the fourth vertical arm; the width of the second cross arm is smaller than the vertical distance between the lower end surface of the sixth vertical arm and the upper end surface of the fifth cross arm, and the width of the fourth cross arm is smaller than the vertical distance between the upper end surface of the third vertical arm and the lower end surface of the first cross arm;

the first vertical arm and the eighth vertical arm are equal in length, and the third vertical arm and the sixth vertical arm are equal in length; the first cross arm and the fifth cross arm are equal in length, and the second cross arm and the fourth cross arm are equal in length; the second vertical arm and the seventh vertical arm are equal in length, and the fourth vertical arm and the fifth vertical arm are equal in length;

the widths of the first vertical arm, the second vertical arm, the third vertical arm, the fourth vertical arm, the fifth vertical arm, the sixth vertical arm, the seventh vertical arm, the eighth vertical arm, the first cross arm, the second cross arm, the fourth cross arm and the fifth cross arm are equal to five-ninth of the width of the connecting arm.

Preferably, the corner edges of the first vertical arm are in fillet transition, and the joint between the first vertical arm and the first cross arm is in fillet transition; the angle edges of the eighth vertical arm are in fillet transition, and the joint between the eighth vertical arm and the fifth cross arm is in fillet transition.

In the X-shaped profiled bar, preferably, the corner edges of the third vertical arm are all in fillet transition, and the joint between the third vertical arm and the second cross arm is in fillet transition; and corner edges of the sixth vertical arm are in fillet transition, and a joint between the sixth vertical arm and the fourth cross arm is in fillet transition.

Preferably, the joint between the first cross arm and the second vertical arm of the X-shaped profiled bar is in fillet transition; the joint between the fifth cross arm and the seventh vertical arm adopts fillet transition; the joint between the second cross arm and the fourth vertical arm adopts fillet transition; and the joint between the fourth cross arm and the fifth vertical arm adopts fillet transition.

Preferably, the joints between the second vertical arm, the fourth vertical arm, the fifth vertical arm, the seventh vertical arm and the connecting arm are all in fillet transition.

The pressure-resistant armor layer for the marine composite hose is formed by winding and interlocking a plurality of X-shaped profiles, namely a first vertical arm of a second X-shaped profile is embedded in a groove formed by a second vertical arm, a connecting arm and a fifth vertical arm of the first X-shaped profile, a third vertical arm of the second X-shaped profile is mutually buckled with a sixth vertical arm of the first X-shaped profile, an eighth vertical arm of the first X-shaped profile is embedded in a groove formed by a fourth vertical arm, a connecting arm and a seventh vertical arm of the second X-shaped profile, and so on, a winding and interlocking structure is formed.

Preferably, when the first X-shaped profile and the second X-shaped profile are wound and interlocked, a transverse gap is reserved between a right end surface of a second vertical arm of the first X-shaped profile and a left end surface of a first vertical arm of the second X-shaped profile, a vertical gap is reserved between an upper end surface of a connecting arm of the first X-shaped profile and a lower end surface of the first vertical arm of the second X-shaped profile, a transverse gap is reserved between a left end surface of a fifth vertical arm of the first X-shaped profile and a right end surface of the first vertical arm of the second X-shaped profile, a vertical gap is reserved between an upper end surface of a fourth cross arm of the first X-shaped profile and a lower end surface of the first cross arm of the second X-shaped profile, and a transverse gap is reserved between a right end surface of the sixth vertical arm of the first X-shaped profile and left end surfaces of the second vertical arm and the fourth vertical arm of the second X-shaped profile, a vertical gap is reserved between the lower end face of a sixth vertical arm of the first X-shaped profiled bar and the upper end face of a second cross arm of the second X-shaped profiled bar, a transverse gap is reserved between the left end face of the sixth vertical arm of the first X-shaped profiled bar and the right end face of a third vertical arm of the second X-shaped profiled bar, a vertical gap is reserved between the lower end face of a fourth cross arm of the first X-shaped profiled bar and the upper end face of the third vertical arm of the second X-shaped profiled bar, a transverse gap is reserved between the right end face of a fifth vertical arm and a seventh vertical arm of the first X-shaped profiled bar and the left end face of a third vertical arm of the second X-shaped profiled bar, a vertical gap is reserved between the upper end face of a fifth cross arm of the first X-shaped profiled bar and the lower end face of the second cross arm of the second X-shaped profiled bar, and a transverse gap is reserved between the left end face of an eighth vertical arm of the first X-shaped profiled bar and the right end face of the fourth vertical arm of the second X-shaped profiled bar, a vertical gap is reserved between the upper end surface of an eighth vertical arm of the first X-shaped profiled bar and the lower end surface of a connecting arm of the second X-shaped profiled bar, and a transverse gap is reserved between the right end surface of the eighth vertical arm of the first X-shaped profiled bar and the left end surface of a seventh vertical arm of the second X-shaped profiled bar;

and the width of the transverse gap is equal to that of the vertical gap and is one fifth of that of the first vertical arm, and the other X-shaped profiles wound and interlocked with each other are also used.

The compression-resistant armor layer is characterized in that an elastic composite layer is preferably bonded on a contact interface of two adjacent X-shaped profiles, the elastic composite layer sequentially passes through a first vertical arm left end face, a first vertical arm lower end face, a first vertical arm right end face, a first transverse arm lower end face, a second vertical arm left end face, a fourth vertical arm left end face, a second transverse arm upper end face, a third vertical arm right end face, a third vertical arm upper end face, a third vertical arm left end face, a second transverse arm lower end face, a fourth vertical arm right end face, a connecting arm lower end face and a seventh vertical arm left end face of the steel strip to be bonded, and the thickness of the elastic composite layer is one fifth of the width of the first vertical arm.

The utility model provides a compound hose in ocean, includes framework layer, inner liner, resistance to compression armor, first wearing layer, first tensile armor, second wearing layer, second tensile armor, radial buckling restrained layer and the outer cladding that from interior to exterior set gradually, the resistance to compression armor is foretell resistance to compression armor.

Due to the adoption of the technical scheme, the invention has the following advantages:

1. the cross section of the profiled bar provided by the invention is X-shaped, the first vertical arm of the second profiled bar is embedded in the groove formed by the second vertical arm, the connecting arm and the fifth vertical arm of the first profiled bar, the third vertical arm of the second profiled bar is mutually buckled with the sixth vertical arm of the first profiled bar, the eighth vertical arm of the first profiled bar is embedded in the groove formed by the fourth vertical arm, the connecting arm and the seventh vertical arm of the second profiled bar, and the winding interlocking structure is formed by analogy. And a certain gap is formed between two adjacent steel belts, so that the two adjacent steel belts can move relatively, and the steel belts can bear external pressure load and have good flexibility. In addition, only one interlocking embedding structure is arranged between two adjacent steel belts of the traditional C-shaped and Z-shaped profiled bars, and three interlocking embedding structures are arranged between two adjacent steel belts of the profiled bars provided by the invention, so that the movement of the steel belts in the axial direction and the radial direction of a pipeline can be limited, the axial rigidity of the compression-resistant armor layer is increased, and the compression-resistant armor layer is prevented from being unlocked due to overlarge axial load.

2. According to the invention, the elastic composite layer can be bonded on the contact interface of two adjacent profiled bars to fill the gap between the two adjacent profiled bars, so that the inner liner layer on the inner side and the wear-resistant layer on the outer side of the compression-resistant armor layer can be effectively prevented from being clamped into the gap in the pipeline operation process, and the inner liner layer and the wear-resistant layer are prevented from being damaged; and because the elastic composite layer has elasticity, still can keep good relative motion between the steel band for guarantee that resistance to compression armor, even ocean composite hose have good flexibility promptly.

3. The elastic composite layer bonded by the profiled bars is positioned between two adjacent profiled bars, so that the impact of collision between the two adjacent profiled bars can be buffered in the running process of the pipeline, the influence of fretting fatigue on the steel of the pressure-resistant armor layer is reduced, and the service life of the composite hose is prolonged.

4. The end surfaces of the profiled bar are in fillet transition, so that scraping and scratches caused by relative movement between steel belts can be relieved, and the reduction of compression resistance caused by stress concentration in the operation process is reduced.

Drawings

Fig. 1 is a schematic cross-sectional view of a profiled bar according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a compressive armor provided in accordance with an embodiment of the invention;

fig. 3 is a schematic structural diagram of a profiled bar for bonding composite materials according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a construction of a pressure resistant armor of bonded composite according to an embodiment of the invention;

fig. 5 is a schematic structural diagram of a marine composite hose according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "lateral," "vertical," "transverse," "longitudinal," and the like refer to an orientation or a positional relationship based on that shown in the drawings, which is merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used to define elements only for convenience in distinguishing between the elements, and unless otherwise stated have no special meaning and are not to be construed as indicating or implying any relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the X-shaped profile for the marine composite hose according to the present embodiment includes a steel strip 10 having an X-shaped cross section, wherein the steel strip 10 includes a first U-shaped long arm 110, a first U-shaped short arm 120, a second U-shaped short arm 140, a second U-shaped long arm 150, and a connecting arm 130, which are integrally disposed.

The first U-shaped long arm 110 is provided with a downward opening and comprises a first cross arm 112, and a first vertical arm 111 and a second vertical arm 113 which are parallel to each other and connected to two ends of the first cross arm 112;

the opening of the first U-shaped short arm 120 faces upwards and is arranged opposite to the first U-shaped long arm 110, and the first U-shaped short arm comprises a second cross arm 122, and a third vertical arm 121 and a fourth vertical arm 123 which are parallel to each other and connected to two ends of the second cross arm 122;

the second U-shaped short arm 140 is provided with an opening facing downwards and is adjacent to the first U-shaped long arm 110, and comprises a fourth cross arm 142, and a fifth vertical arm 141 and a sixth vertical arm 143 which are parallel to each other and connected to two ends of the fourth cross arm 142;

the second U-shaped long arm 150 is provided with an upward opening and is opposite to the second U-shaped short arm 140, and comprises a fifth cross arm 152, and a seventh vertical arm 151 and an eighth vertical arm 153 which are parallel to each other and connected to two ends of the fifth cross arm 152;

the connecting arm 130 is arranged among the first U-shaped long arm 110, the first U-shaped short arm 120, the second U-shaped short arm 140 and the second U-shaped long arm 150, the left end of the connecting arm 130 is vertically connected with the second vertical arm 113 and the fourth vertical arm 123, and the right end of the connecting arm 130 is vertically connected with the fifth vertical arm 141 and the seventh vertical arm 151;

the first U-shaped long arm 110, the first U-shaped short arm 120, the second U-shaped short arm 140, and the second U-shaped long arm 150 are arranged in a central symmetry manner with respect to the connecting arm 130.

The width of the first vertical arm 111 is smaller than the transverse distance between the second vertical arm 113 and the fifth vertical arm 141, and the width of the eighth vertical arm 153 is smaller than the transverse distance between the fourth vertical arm 123 and the seventh vertical arm 151; the width of the third vertical arm 121 is smaller than the transverse distance between the fifth vertical arm 141 and the sixth vertical arm 143, and the width of the sixth vertical arm 143 is smaller than the transverse distance between the third vertical arm 121 and the fourth vertical arm 123; the width of the second cross arm 122 is smaller than the vertical distance between the lower end surface of the sixth vertical arm 143 and the upper end surface of the fifth cross arm 152, and the width of the fourth cross arm 142 is smaller than the vertical distance between the upper end surface of the third vertical arm 121 and the lower end surface of the first cross arm 112;

the first vertical arm 111 and the eighth vertical arm 153 are equal in length, and the third vertical arm 121 and the sixth vertical arm 143 are equal in length; the first crossbar 112 and the fifth crossbar 152 are equal in length, and the second crossbar 122 and the fourth crossbar 142 are equal in length; the second vertical arm 113 and the seventh vertical arm 151 are equal in length, and the fourth vertical arm 123 and the fifth vertical arm 141 are equal in length;

the first vertical arm 111, the second vertical arm 113, the third vertical arm 121, the fourth vertical arm 123, the fifth vertical arm 141, the sixth vertical arm 143, the seventh vertical arm 151, the eighth vertical arm 153, the first cross arm 112, the second cross arm 122, the fourth cross arm 142, and the fifth cross arm 152 have the same width, and are all five ninth-tenth of the width of the connecting arm 130.

In the above embodiment, preferably, the corner edges 1111 and 1112 of the first vertical arm 111 are both in rounded transition, and the joints 1121 and 1122 between the first vertical arm 111 and the first horizontal arm 112 are both in rounded transition; the corner edges 1531, 1532 of the eighth vertical arm 153 are rounded, and the joints 1521, 1522 between the eighth vertical arm 153 and the fifth cross arm 152 are rounded.

In the above embodiment, preferably, the corner edges 1211 and 1212 of the third vertical arm 121 are in rounded transition, and the joints 1221 and 1222 between the third vertical arm 121 and the second horizontal arm 122 are in rounded transition; the corner edges 1431 and 1432 of the sixth vertical arm 143 are rounded, and the joints 1421 and 1422 between the sixth vertical arm 143 and the fourth horizontal arm 142 are rounded.

In the above embodiment, the joints 1131, 1132 between the first cross arm 112 and the second vertical arm 113 are preferably rounded transitions; the joints 1511 and 1512 between the fifth cross arm 152 and the seventh vertical arm 151 are in fillet transition; the joints 1231 and 1232 between the second cross arm 122 and the fourth vertical arm 123 are in fillet transition; the joints 1411, 1412 between the fourth cross arm 142 and the fifth vertical arm 141 are rounded.

In the above embodiment, the joints 1311, 1312, 1313, 1314 between the second vertical arm 113, the fourth vertical arm 123, the fifth vertical arm 141, the seventh vertical arm 151 and the connecting arm 130 are preferably rounded.

Based on the profile provided in the above embodiment, as shown in fig. 2, the invention further provides a pressure-resistant armor layer for a marine composite hose, which is formed by winding and interlocking a plurality of X-shaped profiles as in any of the above embodiments, that is, the first vertical arm 111 of the second X-shaped profile ii is embedded in the groove formed by the second vertical arm 113, the connecting arm 130 and the fifth vertical arm 141 of the first X-shaped profile i, the third vertical arm 121 of the second X-shaped profile ii is engaged with the sixth vertical arm 143 of the first X-shaped profile i, the eighth vertical arm 153 of the first X-shaped profile i is embedded in the groove formed by the fourth vertical arm 123, the connecting arm 130 and the seventh vertical arm 151 of the second X-shaped profile ii, and so on, a winding and interlocking structure is formed.

In the above embodiment, preferably, when the first X-shaped profile i and the second X-shaped profile ii are wound and interlocked in the above-described manner, the right end surface of the second vertical arm 113 of the first X-shaped profile i and the left end surface of the first vertical arm 111 of the second X-shaped profile ii retain a transverse gap, the upper end surface of the connecting arm 130 of the first X-shaped profile i and the lower end surface of the first vertical arm 111 of the second X-shaped profile ii retain a vertical gap, the left end surface of the fifth vertical arm 141 of the first X-shaped profile i and the right end surface of the first vertical arm 111 of the second X-shaped profile ii retain a transverse gap, the upper end surface of the fourth horizontal arm 142 of the first X-shaped profile i and the lower end surface of the first horizontal arm 112 of the second X-shaped profile ii retain a vertical gap, the right end surface of the sixth vertical arm 143 of the first X-shaped profile i and the left end surfaces of the second vertical arm 113 and the fourth vertical arm 123 of the second X-shaped profile ii retain a transverse gap, a vertical gap is reserved between the lower end surface of a sixth vertical arm 143 of a first X-shaped profile I and the upper end surface of a second cross arm 122 of a second X-shaped profile II, a transverse gap is reserved between the left end surface of the sixth vertical arm 143 of the first X-shaped profile I and the right end surface of a third vertical arm 121 of the second X-shaped profile II, a transverse gap is reserved between the lower end surface of a fourth cross arm 142 of the first X-shaped profile I and the upper end surface of the third vertical arm 121 of the second X-shaped profile II, a transverse gap is reserved between the right end surface of a fifth vertical arm 141 and a seventh vertical arm 151 of the first X-shaped profile I and the left end surface of the third vertical arm 121 of the second X-shaped profile II, a vertical gap is reserved between the upper end surface of a fifth cross arm 152 of the first X-shaped profile I and the lower end surface of the second cross arm 122 of the second X-shaped profile II, a transverse gap is reserved between the left end surface of an eighth vertical arm 153 of the first X-shaped profile I and the right end surface of the fourth vertical arm 123 of the second X-shaped profile II, a vertical gap is reserved between the upper end surface of the eighth vertical arm 153 of the first X-shaped profiled bar I and the lower end surface of the connecting arm 130 of the second X-shaped profiled bar II, and a transverse gap is reserved between the right end surface of the eighth vertical arm 153 of the first X-shaped profiled bar I and the left end surface of the seventh vertical arm 151 of the second X-shaped profiled bar II. And the transverse gap is equal to the vertical gap in width, which is one fifth of the width of the first vertical arm 111, and the rest of the wound and interlocked X-shaped profiles are also.

In the above embodiment, as shown in fig. 3 and 4, preferably, an elastic composite layer 11 is bonded to the contact interface between two adjacent X-shaped profiles, the elastic composite layer 11 is bonded to the steel strip 10 sequentially through the left end surface of the first vertical arm 111, the lower end surface of the first vertical arm 111, the right end surface of the first vertical arm 111, the lower end surface of the first horizontal arm 112, the left end surface of the second vertical arm 113, the left end surface of the fourth vertical arm 123, the upper end surface of the second horizontal arm 122, the right end surface of the third vertical arm 121, the upper end surface of the third vertical arm 121, the left end surface of the third vertical arm 121, the lower end surface of the second horizontal arm 122, the right end surface of the fourth vertical arm 123, the lower end surface of the connecting arm 130, and the left end surface of the seventh vertical arm 151 of the steel strip 10, and the thickness of the elastic composite layer 11 is one fifth of the width of the first vertical arm 111.

Additionally, as shown in fig. 5, the invention also provides a marine composite hose, which sequentially comprises a framework layer 1, an inner liner layer 2, a pressure-resistant armor layer 3, a first wear-resistant layer 4, a first tensile armor layer 5, a second wear-resistant layer 6, a second tensile armor layer 7, a radial buckling prevention layer 8 and an outer cladding layer 9 from inside to outside, wherein the pressure-resistant armor layer 3 is the pressure-resistant armor layer in any of the above embodiments.

The framework layer 1 is used for resisting external pressure load, providing enough radial rigidity for supporting the lining pipe and preventing external pressure from crushing; the inner liner 2 forms a sealing layer for transporting fluid, preventing leakage of the internal fluid; the interlocked and wound compression-resistant armor layer 3 bears the internal pressure and partial external pressure of the pipe body; the first wear-resistant layer 4 and the second wear-resistant layer 6 can prevent contact abrasion between the metal layers; the first tensile armor layer 5 and the second tensile armor layer 7 are used for bearing axial tension; the radial buckling prevention layer 8 is used for preventing the tensile armor layer from being birdcaged; the outer cladding 9 is resistant to mechanical damage and prevents sea water corrosion and damage by marine organisms and ships.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.