High-strength maritime pipe for deep sea

Abstract

The utility model discloses a high-strength maritime pipe for deep sea, which comprises a composite pipeline and a connecting component for connecting the composite pipeline, the composite pipeline is sequentially provided with an inner pipe layer, a V-shaped corrugated pipe layer and an outer pipe layer from inside to outside, and gaps between the V-shaped corrugated pipe layer and the inner pipe layer and between the V-shaped corrugated pipe layer and the outer pipe layer are filled with first filler. The connecting assembly comprises a connecting sleeve and a closed pipe, a plurality of through grooves are sequentially formed in the annular face of the connecting sleeve in the circumferential direction of the connecting sleeve, the through grooves cover the abutting position of the pair of connected composite pipelines, the outer side of the connecting sleeve is sleeved with the closed pipe, and the space between the connecting sleeve and the closed pipe is filled with second filler. According to the composite pipeline, the V-shaped corrugated pipe layer with good bending resistance is arranged, the first filler is filled in the composite pipeline, and the composite pipeline can be supported between the outer pipe layer and the inner pipe layer through the V-shaped corrugated pipe layer, so that the deformation resistance of the outer pipe layer and the inner pipe layer is enhanced, and the composite pipeline can stably work in a high-pressure environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to maritime pipeline technical field, concretely is a high strength maritime pipe for deep sea. BACKGROUND

[0002] With the development of marine resources and marine engineering, the requirement for maritime pipe used in deep sea environment is increasingly strict. Deep sea has the characteristics of high water pressure, strong corrosion and low temperature, and the traditional maritime pipe is prone to deformation and rupture due to insufficient compression resistance, or is damaged by seawater due to poor corrosion resistance, thereby affecting the smooth progress of marine operations, and even may cause serious safety accidents. Therefore, there is an urgent need for a maritime pipe that can operate stably in deep sea environment for a long time.

[0003] In the prior art, the patent with the application number CN201410682473.4 discloses a deep sea oil conveying composite pipeline, which comprises a rigid inner pipe, a rigid outer pipe, a filler between the rigid inner pipe and the rigid outer pipe, a thermal insulation layer and a corrosion-resistant layer coated on the rigid outer pipe, characterized in that the inner pipe pegs are fixed on the outer wall of the rigid inner pipe, the outer pipe pegs are fixed on the inner wall of the rigid outer pipe, the rigid inner pipe and the rigid outer pipe are concentric, the inner pipe pegs and the outer pipe pegs are uniformly arranged along the circumference of the steel pipe, and are uniformly arranged at intervals along the axis of the steel pipe, and the thermal insulation layer is a foam concrete layer. The present application has the advantages of excellent thermal insulation performance, good overall working performance and high stable bearing capacity.

[0004] The above-mentioned patent provides a pipeline for deep sea, which has good thermal insulation performance and good compression resistance by arranging the filler between the rigid inner pipe and the rigid outer pipe. However, the structure of each layer of the pipeline is a circular pipe structure, and lacks internal deformation prevention support structure, which is prone to deformation when the external pressure of the pipeline is high, and needs to be further improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a high strength maritime pipe for deep sea, which aims at improving the problem that the structure of each layer of the existing maritime pipeline is a circular pipe structure, and lacks internal deformation prevention support structure, which is prone to deformation when the external pressure of the pipeline is high.

[0006] The utility model discloses a high -strength maritime pipe for deep sea, including composite pipeline, still including the connecting assembly for connecting the composite pipeline, the composite pipeline is sequentially provided with the inner tube layer, V-shaped pleated pipe layer and the outer tube layer from inside to outside, the V-shaped pleated pipe layer is filled with first filler in the interval between V-shaped pleated pipe layer and inner tube layer and outer tube layer, the connecting assembly includes the connecting sleeve and the closed pipe, the ring surface of connecting sleeve is sequentially provided with a plurality of through -groove along its circumferential direction, and the through -groove covers a pair of the abutting place of composite pipeline, and the outside of connecting sleeve is sleeved with the closed pipe, and the second filler is filled between connecting sleeve and closed pipe.

[0007] Preferably, the connecting sleeve includes an abutment plate, and the two ends of the connecting sleeve are fixedly provided with the abutment plate; the outer ring surface of the outer tube layer is provided with a mounting boss, and the mounting boss is provided with a second mounting bolt; the end of the connecting sleeve is sleeved on the outer ring surface of the corresponding outer tube layer, and is abutted on the mounting boss; the abutment plate is provided with a threaded connection seat at a position corresponding to the second mounting bolt, and the second mounting bolt is threadedly mounted on the threaded connection seat.

[0008] Preferably, the utility model also includes an anti-falling steel hook, and the outer tube layer is provided with a second threaded hole at a position corresponding to the through-groove; one end of the anti-falling steel hook is threadedly mounted in the second threaded hole through the through-groove, and the other end is cast in the second filler.

[0009] Preferably, the closed pipe includes a first mounting bolt and a casting hole; the outer ring surface of the abutment plate is sequentially provided with a plurality of first threaded holes along its circumferential direction, and the end of the closed pipe is provided with a first mounting bolt at a position corresponding to the first threaded hole; the first mounting bolt is threadedly mounted in the first threaded hole; the pipe body of the closed pipe is provided with a casting hole therethrough, and the casting hole is threadedly provided with a plugging bolt.

[0010] Preferably, the first filler is polystyrene foam concrete.

[0011] Preferably, the second filler is fiber-reinforced waterproof concrete.

[0012] Preferably, the inner tube surface and the outer appearance surface of the composite pipeline are provided with an anti-corrosion coating.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1、The utility model discloses a high -strength maritime pipe for deep sea, including composite pipeline, still including the connecting assembly for connecting the composite pipeline, the composite pipeline is sequentially provided with the inner tube layer, V-shaped pleated pipe layer and the outer tube layer from inside to outside, the V-shaped pleated pipe layer is filled with first filler in the interval between V-shaped pleated pipe layer and inner tube layer and outer tube layer, the connecting assembly includes the connecting sleeve and the closed pipe, the ring surface of connecting sleeve is sequentially provided with a plurality of through -groove along its circumferential direction, and the through -groove covers a pair of the abutting place of composite pipeline, and the outside of connecting sleeve is sleeved with the closed pipe, and the second filler is filled between connecting sleeve and closed pipe.

[0015] 2、The utility model discloses a connecting assembly can conveniently connect and lengthen multiple composite pipes, and the second filler in the connecting assembly can effectively enhance the sealing between the connecting assembly and the composite pipe, and the connecting assembly itself is also higher in strength.

[0016] 3、The utility model discloses a first filler can make the composite pipe have good heat preservation and insulation capacity. DRAWINGS

[0017] Figure 1 It is the three-dimensional structure schematic diagram of the utility model, and

[0018] Figure 2 It is the sectional structure schematic diagram of the utility model,

[0019] Figure 3 It is the structure schematic diagram of the connecting sleeve of the utility model,

[0020] Figure 4 It is the structure schematic diagram of the closed pipe of the utility model,

[0021] Figure 5 It is the structure schematic diagram of the composite pipe of the utility model,

[0022] Figure 6 It is the structure schematic diagram of the connecting sleeve assembly of the utility model.

[0023] In the drawing: 1, composite pipe, 2, connecting assembly, 201, connecting sleeve, 202, closed pipe, 203, abutment plate, 204, threaded connecting seat, 205, through slot, 206, first threaded hole, 207, first mounting bolt, 208, pouring hole, 209, plugging bolt, 3, inner pipe layer, 4, V-shaped pleated pipe layer, 5, outer pipe layer, 501, mounting boss, 502, second mounting bolt, 503, second threaded hole, 6, first filler, 7, second filler, 8, anti-falling steel hook. DETAILED DESCRIPTION

[0024] In the utility model, unless another explicit provision and limitation, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, also can be detachable connection, or integral; can be mechanical connection, also can be electrical connection; can be directly connected, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements or the interaction of two elements. For ordinary skilled in the art, the above-mentioned terms can be understood according to the specific meaning in the utility model.

[0025] The following is further explained in conjunction with the drawings and specific embodiments: Example 1

[0026] As Figure 1 and Figure 2 shown, a high-strength marine pipe for deep sea use includes a composite pipe 1, and the inner pipe surface and the outer surface of the composite pipe 1 are provided with an anti-corrosion coating. By providing the anti-corrosion coating, the surface of the pipe can be prevented from being corroded by seawater. In addition, it also includes a connecting assembly 2 for connecting the composite pipe 1; by providing the connecting assembly 2, it is convenient to connect and lengthen multiple composite pipes 1, and it is convenient for long-distance construction and laying. The composite pipe 1 is sequentially provided with an inner pipe layer 3, a V-shaped corrugated pipe layer 4 and an outer pipe layer 5 from inside to outside, and the gap between the V-shaped corrugated pipe layer 4 and the inner pipe layer 3 and the outer pipe layer 5 is filled with a first filler 6; by providing the V-shaped corrugated pipe layer 4 between the inner pipe layer 3 and the outer pipe layer 5, the bending resistance of the V-shaped corrugated pipe layer 4 can be enhanced through the V-shaped corrugation of the V-shaped corrugated pipe layer 4, so that the inner pipe layer 3 and the outer pipe layer 5 are not easy to deform through the strong bending resistance of the V-shaped corrugated pipe layer 4, the first filler 6 adopts polystyrene foam concrete, which can further enhance the compression resistance of the inner pipe layer 3 and the outer pipe layer 5, make the composite pipe 1 inside full, prevent it from deforming, and at the same time, the polystyrene foam concrete also has the function of heat preservation and heat insulation, which can make the composite pipe 1 have the function of heat preservation and heat insulation.

[0027] As Figures 2-4 shown, the connecting assembly 2 includes a connecting sleeve 201 and a closed pipe 202, the annular surface of the connecting sleeve 201 is sequentially provided with a plurality of through grooves 205 along the circumferential direction thereof, the through grooves 205 cover the abutting positions of a pair of connected composite pipes 1, the outer side of the connecting sleeve 201 is sleeved with the closed pipe 202, the closed pipe 202 includes first mounting bolts 207 and pouring holes 208; the outer annular surface of the abutting plate 203 is sequentially provided with a plurality of first threaded holes 206 along the circumferential direction thereof, the end of the closed pipe 202 is provided with a first mounting bolt 207 corresponding to the position of the first threaded hole 206; the first mounting bolt 207 is threadedly installed in the first threaded hole 206; the pipe body of the closed pipe 202 is provided with a pouring hole 208 therethrough, and the pouring hole 208 is threadedly provided with a plugging bolt 209. The connecting sleeve 201 and the closed pipe 202 are filled with a second filler 7, and the second filler 7 adopts fiber-reinforced waterproof concrete; by pouring the fiber-reinforced waterproof concrete in the connecting assembly 2, the fiber-reinforced waterproof concrete can penetrate into the installation positions of the connecting assembly 2 and the composite pipe 1, so that the connecting assembly 2 and the pair of composite pipes 1 form a whole. The effect of sealing and waterproofing is achieved, and by filling the inside of the connecting assembly 2 to be solid, the strength of the connecting assembly 2 can be enhanced to prevent the connecting assembly 2 from breaking.

[0028] As Figures 3-6As shown, the connecting sleeve 201 includes an abutment plate 203, and the two ends of the connecting sleeve 201 are fixedly provided with the abutment plate 203; the outer ring surface of the outer pipe layer 5 is provided with a mounting boss 501, and the mounting boss 501 is provided with a second mounting bolt 502; the end of the connecting sleeve 201 is sleeved on the outer ring surface of the corresponding outer pipe layer 5, and is abutted on the mounting boss 501; the abutment plate 203 is provided with a threaded connection seat 204 at a position corresponding to the second mounting bolt 502, and the second mounting bolt 502 is threadedly mounted on the threaded connection seat 204. In addition, it also includes an anti-falling steel hook 8, and the outer pipe layer 5 is provided with a second threaded hole 503 at a position corresponding to the through slot 205; one end of the anti-falling steel hook 8 passes through the through slot 205 and is threadedly mounted in the second threaded hole 503, and the other end is cast in the second filler 7. Through the anti-falling steel hook 8, the outer pipe layer 5 and the second filler 7 can be more firmly connected, preventing them from falling off. Example 2

[0029] As shown in Figure 1 and Figure 2 A high-strength marine pipe for deep sea use includes a composite pipe 1, and the inner pipe surface and the outer surface of the composite pipe 1 are provided with an anti-corrosion coating. In addition, it also includes a connecting assembly 2 for connecting the composite pipe 1; the composite pipe 1 is sequentially provided with an inner pipe layer 3, a V-shaped corrugated pipe layer 4 and an outer pipe layer 5 from inside to outside, and the V-shaped corrugated pipe layer 4 is filled with a first filler 6 in the gap between the inner pipe layer 3 and the outer pipe layer 5; the first filler 6 is polystyrene foam concrete.

[0030] As shown in Figures 2-4 The connecting assembly 2 includes a connecting sleeve 201 and a closed pipe 202, the ring surface of the connecting sleeve 201 is sequentially provided with a plurality of through slots 205 in the circumferential direction, the through slots 205 cover the abutment positions of a pair of connected composite pipes 1, the outer side of the connecting sleeve 201 is sleeved with the closed pipe 202, the closed pipe 202 includes a first mounting bolt 207 and a pouring hole 208; the outer ring surface of the abutment plate 203 is sequentially provided with a plurality of first threaded holes 206 in the circumferential direction, and the end of the closed pipe 202 is provided with a first mounting bolt 207 at a position corresponding to the first threaded hole 206; the first mounting bolt 207 is threadedly mounted in the first threaded hole 206; the pipe body of the closed pipe 202 is provided with a pouring hole 208 therethrough, and the pouring hole 208 is threadedly provided with a plugging bolt 209. The connecting sleeve 201 and the closed pipe 202 are filled with a second filler 7, and the second filler 7 is fiber-reinforced waterproof concrete.

[0031] As shown in Figures 3-6As shown, the connecting sleeve 201 comprises abutting plates 203, and the two ends of the connecting sleeve 201 are fixedly provided with the abutting plates 203; the outer ring surface of the outer pipe layer 5 is provided with a mounting boss 501, and the mounting boss 501 is provided with a second mounting bolt 502; the end of the connecting sleeve 201 is sleeved on the outer ring surface of the corresponding outer pipe layer 5, and is abuttingly arranged on the mounting boss 501; the abutting plate 203 is provided with a threaded connecting seat 204 at a position corresponding to the second mounting bolt 502, and the second mounting bolt 502 is threadedly mounted on the threaded connecting seat 204. In addition, the anti-falling steel hook 8 is further included, and the outer pipe layer 5 is provided with a second threaded hole 503 at a position corresponding to the through groove 205; one end of the anti-falling steel hook 8 is threadedly mounted in the second threaded hole 503 through the through groove 205, and the other end is cast in the second filler 7.

[0032] The working principle of the utility model is: the anti-pressure capacity of the inner pipe layer 3 and the outer pipe layer 5 is strengthened by the V-shaped pleated pipe layer 4 and the first filler 6 arranged between the inner pipe layer 3 and the outer pipe layer 5 in the composite pipe 1, so that the composite pipe 1 can resist the pressure of deep sea when working in deep sea; when the composite pipe 1 needs to be lengthened, the composite pipe 1 is inserted in the connecting sleeve 201 in alignment, then is fixed through the second mounting bolt 502 on the outer pipe layer 5, the anti-falling steel hook 8 is mounted in the second threaded hole 503 through the through groove 205, then the closing pipe 202 is sleeved on the outside of the connecting sleeve 201, the second filler 7 can be cast into the inside through the pouring hole 208, the second filler 7 is solidified and wraps the anti-falling steel hook 8, the connecting strength between the second filler 7 and the outer pipe layer 5 can be strengthened, meanwhile, the second filler 7 penetrates between the outer pipe layer 5 and the connecting assembly 2 through the through groove and is solidified, so that the outer pipe layer 5 and the connecting assembly 2 form a whole, the strength of the connecting assembly 2 can be strengthened, and the connection part of the composite pipe 1 can be sealed.

[0033] In conclusion, the utility model can strengthen the anti-deformation capacity of the outer pipe layer 5 and the inner pipe layer 3 through the V-shaped pleated pipe layer 4 supported between the outer pipe layer 5 and the inner pipe layer 3, so that the composite pipe 1 can work stably in high-pressure environment; the utility model can conveniently lengthen the composite pipe 1 through the connecting assembly 2, the sealing between the connecting assembly 2 and the composite pipe 1 can be effectively strengthened through the second filler 7 in the connecting assembly 2, and the strength of the connecting assembly 2 is higher; the utility model can make the composite pipe 1 have good heat preservation and insulation capacity through the first filler 6.

[0034] The composite pipe (1) is sequentially provided with an inner pipe layer (3), a V-shaped pleated pipe layer (4) and an outer pipe layer (5) from inside to outside.

[0035] The structure of the high-strength maritime pipe for deep sea comprises, from inside to outside, an inner pipe layer, a steel wire winding reinforcing layer, a middle rubber layer, a steel wire mesh weaving tensile layer and an outer rubber layer. The inner lining layer and the middle rubber layer are made of excellent oil-resistant butyronitrile NBR synthetic rubber; the outer covering layer is made of excellent oil-resistant, sea water-resistant, wear-resistant and weather-resistant chloroprene CR synthetic rubber; the reinforcing layer is formed by winding high-strength copper-plated steel wires, and bears internal oil pressure and external sea water pressure.

[0036] The tensile layer is made of steel wire mesh weaving (the steel wire mesh angle adopts a small-angle weaving structure, and the weaving angle is set to 27.4°).

[0037] The middle rubber layer is arranged between each layer, and the hose is effectively bonded between each layer after vulcanization.

[0038] III. Main performance

[0039] 1. The allowable tensile force of the pipe body is not less than 10,000 N.

[0040] 2. The working temperature range is -50℃ to +100℃.

[0041] 3. The minimum bending radius is 150 mm.

[0042] 4. The sea water depth is 500-1,000 m (external pressure is 5-10 MPa).

[0043] 5. The hose has light and thin pipe wall, small bending radius, excellent flexibility, axial tensile resistance, internal oil pressure bearing and external sea water pressure resistance.

[0044] The above is only the preferred embodiment of the utility model, and is not used for limiting the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-strength marine pipe for deep sea use comprising a composite pipe (1), characterized by, The application further comprises a connecting assembly (2) for connecting the composite pipe (1); the composite pipe (1) is sequentially provided with an inner pipe layer (3), a V-shaped corrugated pipe layer (4) and an outer pipe layer (5) from inside to outside, the V-shaped corrugated pipe layer (4) is filled with a first filler (6) in the gap between the inner pipe layer (3) and the outer pipe layer (5); the connecting assembly (2) comprises a connecting sleeve (201) and a closing pipe (202), the annular surface of the connecting sleeve (201) is sequentially provided with a plurality of through grooves (205) along the circumferential direction, the through grooves (205) cover the abutting position of a pair of connected composite pipes (1), the outer side of the connecting sleeve (201) is sleeved with the closing pipe (202), and the connecting sleeve (201) and the closing pipe (202) are filled with a second filler (7).

2. The high-strength marine pipe for deep sea use according to claim 1, characterized by The connecting sleeve (201) comprises an abutting plate (203), and the two ends of the connecting sleeve (201) are fixedly provided with the abutting plate (203); the outer annular surface of the outer pipe layer (5) is provided with a mounting boss (501), and the mounting boss (501) is provided with a second mounting bolt (502); the end of the connecting sleeve (201) is sleeved on the outer annular surface of the corresponding outer pipe layer (5) and is abutted on the mounting boss (501); the abutting plate (203) is provided with a threaded connecting seat (204) at a position corresponding to the second mounting bolt (502), and the second mounting bolt (502) is threadedly mounted on the threaded connecting seat (204).

3. The high-strength marine pipe for deep sea use according to claim 2, characterized by In addition, an anti-falling steel hook (8) is further included, the outer pipe layer (5) is provided with a second threaded hole (503) at a position corresponding to the through groove (205); one end of the anti-falling steel hook (8) is threadedly mounted in the second threaded hole (503) through the through groove (205), and the other end is cast in the second filler (7).

4. The high-strength marine pipe for deep sea use according to claim 2, characterized by The closing pipe (202) comprises a first mounting bolt (207) and a casting hole (208); the outer annular surface of the abutting plate (203) is sequentially provided with a plurality of first threaded holes (206) along the circumferential direction, and the end of the closing pipe (202) is provided with the first mounting bolt (207) at a position corresponding to the first threaded hole (206); the first mounting bolt (207) is threadedly mounted in the first threaded hole (206); the pipe body of the closing pipe (202) is provided with the casting hole (208) penetrating therethrough, and the casting hole (208) is threadedly provided with a plugging bolt (209).

5. The high-strength marine pipe for deep sea use according to claim 1, wherein The first filler (6) is polystyrene foam concrete.

6. The high-strength marine pipe for deep sea use according to claim 1, wherein The second filler (7) is fiber-reinforced waterproof concrete.

7. The high-strength marine pipe for deep sea use according to claim 1, wherein The inner pipe surface and the outer appearance surface of the composite pipe (1) are provided with an anti-corrosion coating.

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