阅读说明：本技术 一种用于海上风力发电的海底电缆护管组件 (Submarine cable protective pipe assembly for offshore wind power generation ) 是由 管国兵 于 2021-09-26 设计创作，主要内容包括：本发明公开了一种用于海上风力发电的海底电缆护管组件,属于电缆护管领域,通过根据实际需要在电缆安装多个双层护管,实现部分电缆在双层护管内部的松弛放置,形成预留电缆区域,当电缆在海底发生过度迁移时,双层护管可自动拉伸,释放出预留电缆,适应外界环境拉力,从而有效降低电缆受到的拉力损坏,当外界作用力消失时,双层护管自动回缩,重新形成预留电缆,为下次电缆受拉过程提供防护,并且,当电缆受外物拦截造成双层护管无法回缩时,通过气泵可同时向多个双层护管内部充气,使其膨胀带动电缆共同上浮,快速有效实现脱离外物,既降低了外物对电缆的破坏,同时也促进了预留电缆的重新形成,实现了对电缆的有效保护。(The invention discloses a submarine cable protective pipe assembly for offshore wind power generation, which belongs to the field of cable protective pipes, and is characterized in that a plurality of double-layer protective pipes are arranged on a cable according to actual requirements, part of the cable is loosely arranged in the double-layer protective pipes to form a reserved cable area, when the cable excessively migrates in the sea bottom, the double-layer protective pipes can be automatically stretched to release the reserved cable to adapt to the external environment tension, so that the tension damage of the cable is effectively reduced, when the external acting force disappears, the double-layer protective pipes automatically retract to form the reserved cable again to provide protection for the next cable tension process, and when the cable is intercepted by foreign objects and the double-layer protective pipes cannot retract, the air pump can be used for simultaneously inflating the inner parts of the double-layer protective pipes to drive the cable to float upwards together by expanding the double-layer protective pipes, so that the cable can be quickly and effectively separated from the foreign objects, thereby reducing the damage of the foreign objects to the cable, meanwhile, the re-formation of the reserved cable is promoted, and the effective protection of the cable is realized.)

1. A submarine cable sheath assembly for offshore wind power generation, comprising: the wind power generation device comprises an air pump (1), an air storage tank (2) and a plurality of double-layer protective pipes arranged on the outer side of a cable, wherein the air pump (1) and the air storage tank (2) are installed inside a wind driven generator, each double-layer protective pipe comprises an outer opening and closing pipe and an inner opening and closing pipe, each outer opening and closing pipe comprises a pair of outer half cylinders (31) which are connected in a rotating mode, an air bag (33) is fixedly connected to the outer surfaces of the outer half cylinders (31), a pair of inflation pipes (34) are fixedly connected to the outer ends of the air bag (33), a main limiting plate (35) is fixedly connected to one ends of the outer half cylinders (31), each inner opening and closing pipe comprises a pair of inner half cylinders (41) which are connected in a rotating mode, the diameter of the outer rings of the inner half cylinders (41) is smaller than that of the outer half cylinders (31), and an auxiliary limiting plate (43) is fixedly connected to one end, far away from the main limiting plate (35), of each inner half cylinder (41);

fixed point sleeves (5) are arranged on two sides of the double-layer protective pipe, the fixed point sleeves (5) are fixedly connected to the outer end of the cable, an annular groove (501) is formed in one end, close to the double-layer protective pipe, of each fixed point sleeve (5), a main limiting plate (35) and an auxiliary limiting plate (43) are respectively inserted into the inner sides of the annular grooves (501), and bolts are connected between the main limiting plate (35) and the auxiliary limiting plate (43) and the fixed point sleeves (5);

a tension sensor (6) is fixedly connected to the inner wall, close to the main limiting plate (35), of one of the outer half cylinders (31), the tension sensor (6) and the air pump (1) are both electrically connected with a wind power generation system, an elastic belt (7) is fixedly connected to the sensing end of the tension sensor (6), one end, far away from the tension sensor (6), of the elastic belt (7) is fixedly connected with a hanging buckle (8), one end, close to the main limiting plate (35), of one of the inner half cylinders (41) is fixedly connected with a hanging ring (9), and the hanging buckle (8) is matched with the hanging ring (9); the length of the cable between the adjacent pair of the fixed point sleeves (5) is greater than that of the double-layer protective pipe on the outer side of the cable.

2. A submarine cable sheath assembly according to claim 1, wherein: the outer end fixedly connected with diaphragm (32) of half outer section of thick bamboo (31), it is a pair of be connected with a plurality of main fasteners between diaphragm (32), set up a plurality of evenly distributed's main screw on diaphragm (32), it is a plurality of main fastener difference threaded connection is between a pair of main screw.

3. A submarine cable sheath assembly according to claim 2, wherein: the outer end of the inner half cylinder (41) is fixedly connected with a short plate (42), an auxiliary fastening piece is connected between the short plates (42), an auxiliary screw hole is formed in the short plate (42), and the auxiliary fastening piece is connected between the auxiliary screw holes in a threaded mode.

4. A submarine cable sheath assembly according to claim 3, wherein: a pair of round holes (502) is formed in the inner wall of the ring groove (501), lock holes corresponding to the round holes (502) are formed in the main limiting plate (35) and the auxiliary limiting plate (43), and the round holes (502) and the lock holes are in threaded connection with bolts.

5. A submarine cable sheath assembly according to claim 4, wherein: the inner wall of the outer half cylinder (31) is fixedly connected with a vertical plate (10), the inner half cylinder (41) is provided with a bar hole (4101), and the vertical plate (10) is connected with the inside of the bar hole (4101) in a sliding manner.

6. A submarine cable sheath assembly according to claim 5, wherein: and a main flexible pipe (11) is arranged between the adjacent double-layer protection pipes, and two ends of the main flexible pipe (11) are respectively in threaded connection with the pair of inflation pipes (34).

7. A submarine cable sheath assembly according to claim 6, wherein: one of them be connected with vice flexible tube (12) between double-deck pillar and air pump (1), the one end and gas tube (34) threaded connection of vice flexible tube (12), the other end of vice flexible tube (12) and the fixed connection of giving vent to anger of air pump (1), fixedly connected with conveying pipe between the inlet end of air pump (1) and gas storage tank (2).

8. A method of using a submarine cable sheath assembly according to claim 7, wherein: the using method comprises the following steps:

s1, installation: preparing a plurality of double-layer protective pipes, respectively installing the double-layer protective pipes between a pair of adjacent fixed point sleeves (5) of the cable, loosely storing the cable between the pair of fixed point sleeves (5) in the double-layer protective pipes to form a reserved cable, and communicating the double-layer protective pipes with the air pump (1) through a main flexible pipe (11) and an auxiliary flexible pipe (12);

s2, when the cable excessively moves under the influence of sea water or shaking of the wind driven generator, the double-layer protective pipe is stretched under the traction action of the cable to release the reserved cable inside, the tension force of the cable is reduced, and when the tension force is reduced, the double-layer protective pipe automatically retracts to form the reserved cable;

s3, when the cable is blocked by the interceptor and the double-layer protective pipe is not retracted for a long time, the wind power generation system controls the air pump (1) to inflate the air bag (33) to realize the floating of the cable, the cable is separated from the interceptor, the retraction of the double-layer protective pipe is promoted, and the reserved cable is formed again;

s4, after the double-layer protection tube retracts, the air pump (1) pumps air in the air bag (33) to enable the double-layer protection tube to form an initial shape.

9. Method of use of a submarine cable sheath assembly for offshore wind power generation according to claim 8, wherein: the specific installation method of the double-layer protective pipe in the step S1 is as follows:

s1-1, firstly, a pair of inner half cylinders (41) are placed between a pair of fixed point sleeves (5) and sleeved outside a cable, an auxiliary limit plate (43) is inserted into a ring groove (501) close to the auxiliary limit plate, the auxiliary limit plate is fixed by bolts, and a pair of short plates (42) is fixed by an auxiliary fastener;

s1-2, sleeving the pair of outer half cylinders (31) on the outer sides of the inner half cylinders (41), firstly connecting the hanging buckles (8) with the hanging rings (9), then inserting the main limiting plate (35) into the other ring groove (501), fixing by bolts in the same way, and then fixing the pair of transverse plates (32) through the main fasteners.

Technical Field

The invention relates to the field of cable protective pipes, in particular to a submarine cable protective pipe assembly for offshore wind power generation.

Background

Wind power generation is the fastest-developing green energy technology in the world, and people have noticed some limitations on land wind energy utilization, such as large occupied area, noise pollution and the like, while land wind power plant construction is rapidly developed. Due to the abundant wind energy resources at sea and the feasibility of the current technology, the sea becomes a rapidly-developing wind power market.

Submarine cables are wires wrapped with insulating materials and laid on the sea floor and under river water for telecommunication transmission. Modern submarine cables use optical fiber as the material to transmit telephone and internet signals. The optical fiber has the characteristics of safety, stability, strong anti-interference capability and good confidentiality,

however, due to the complex sea conditions of the sea bottom, the phenomena that the submarine cable is suspended in the air and the wind driven generator is suspended and displaced along with the sea water and the wind driven generator easily occur along with the long-term scouring of the sea bottom sludge by the sea bottom flow and the shaking of the wind driven generator on the sea, which causes the situation that the cable is damaged by tension.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to provide a submarine cable protective pipe assembly for offshore wind power generation, which can realize loose placement of part of cables in a double-layer protective pipe to form a reserved cable area, when the cables excessively migrate in the sea bottom, the double-layer protective pipe can automatically release the reserved cables to adapt to external environment tension, so that tension damage to the cables is effectively reduced, when external acting force disappears, the reserved cables are formed in the double-layer protective pipe again, and when the double-layer protective pipe cannot retract due to interception of the cables by foreign objects, the cables are driven to float upwards together through expansion of the double-layer protective pipe, so that the separation of the foreign objects is quickly and effectively realized, the damage of the foreign objects to the cables is reduced, and the reformation of the reserved cables is promoted.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A submarine cable protective pipe assembly for offshore wind power generation comprises an air pump, an air storage tank and a plurality of double-layer protective pipes arranged on the outer side of a cable, wherein the air pump and the air storage tank are both installed inside a wind power generator;

fixed point sleeves are arranged on two sides of the double-layer protective pipe and fixedly connected to the outer end of the cable, annular grooves are formed in one ends, close to the double-layer protective pipe, of the fixed point sleeves, the main limiting plate and the auxiliary limiting plate are respectively inserted into the inner sides of the annular grooves, and bolts are connected between the main limiting plate and the fixed point sleeves and between the auxiliary limiting plate and the fixed point sleeves;

one of them fixedly connected with force sensor on the outer half section of thick bamboo is close to the inner wall of main limiting plate, force sensor and air pump all with wind power generation system electric connection, force sensor's response end fixedly connected with elastic webbing, force sensor's one end fixedly connected with string knot is kept away from to the elastic webbing, one of them one end fixedly connected with link that interior half section of thick bamboo is close to main limiting plate, hang knot and link phase-match.

Furthermore, the outer end of the outer half cylinder is fixedly connected with a transverse plate, a pair of transverse plates are connected with a plurality of main fastening pieces, a plurality of uniformly distributed main screw holes are formed in the transverse plate, and the main fastening pieces are respectively in threaded connection between the pair of main screw holes.

Furthermore, the outer end of the inner half cylinder is fixedly connected with a short plate, an auxiliary fastening piece is connected between the short plates, an auxiliary screw hole is formed in the short plate, and the auxiliary fastening piece is in threaded connection between the auxiliary screw holes.

Furthermore, a pair of round holes is formed in the inner wall of the ring groove, lock holes corresponding to the round holes are formed in the main limiting plate and the auxiliary limiting plate, and the round holes and the lock holes are in threaded connection with bolts.

Furthermore, the inner wall of the outer half cylinder which does not contain the tension sensor is fixedly connected with a vertical plate, the inner half cylinder which does not contain the hanging ring is provided with a strip hole, and the vertical plate is connected with the inside of the strip hole in a sliding manner.

Furthermore, a main flexible pipe is arranged between the adjacent double-layer protection pipes, and two ends of the main flexible pipe are respectively in threaded connection with the pair of inflation pipes.

Furthermore, an auxiliary flexible pipe is connected between one of the double-layer protection pipes and the air pump, one end of the auxiliary flexible pipe is in threaded connection with the inflation pipe, the other end of the auxiliary flexible pipe is fixedly connected with the air outlet end of the air pump, and a conveying pipe is fixedly connected between the air inlet end of the air pump and the air storage tank.

Further, the length of the cable between the adjacent pair of the fixed point sleeves is larger than that of the double-layer protection pipe on the outer side of the cable.

A submarine cable protective pipe assembly for offshore wind power generation is used in a method that:

s1, installation: preparing a plurality of double-layer protective pipes, respectively installing the double-layer protective pipes between a pair of adjacent fixed point sleeves of the cable, loosely storing the cable between the fixed point sleeves in the double-layer protective pipes to form a reserved cable, and communicating the double-layer protective pipes with the air pump through a main flexible pipe and an auxiliary flexible pipe;

s2, when the cable excessively moves under the influence of sea water or shaking of the wind driven generator, the double-layer protective pipe is stretched under the traction action of the cable to release the reserved cable inside, the tension force of the cable is reduced, and when the tension force is reduced, the double-layer protective pipe automatically retracts to form the reserved cable;

s3, when the cable is blocked by the interceptor and the double-layer protection tube is not retracted for a long time, the wind power generation system controls the air pump to inflate the air bag, so that the cable floats upwards, the interceptor is separated, the retraction of the double-layer protection tube is promoted, and the reserved cable is formed again;

s4, after the double-layer protection tube retracts, the air pump pumps air in the air bag to enable the double-layer protection tube to form an initial shape.

Further, the specific installation method of the double-layer protection pipe in the step S1 is as follows:

s1-1, placing a pair of inner half cylinders between a pair of fixed point sleeves, sleeving the inner half cylinders outside the cable, inserting an auxiliary limiting plate into a ring groove close to the auxiliary limiting plate, fixing the auxiliary limiting plate by adopting a bolt, and fixing a pair of short plates by an auxiliary fastener;

s1-2, sleeving the outer half cylinders on the outer sides of the inner half cylinders, connecting the hanging buckles with the hanging rings, inserting the main limiting plate into the other ring groove, fixing the main limiting plate by bolts, and fixing the transverse plates by the main fasteners.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) according to the scheme, a plurality of double-layer protection pipes are arranged on a cable according to actual needs, part of the cable is loosely placed in the double-layer protection pipes to form a reserved cable area, when the cable is excessively migrated under the influence of sea water or shaking of a wind driven generator, the double-layer protection pipes can be automatically stretched to release the reserved cable to adapt to external environment tension, so that the tension damage on the cable is effectively reduced, when external acting force disappears, the double-layer protection pipes automatically retract to form the reserved cable again, the protection is provided for the next cable tension process, and when the cable cannot retract due to interception of foreign objects, the air pump can simultaneously inflate the interiors of the double-layer protection pipes to enable the cables to be driven to float upwards together by expansion of the double-layer protection pipes, so that the separation from the foreign objects is quickly and effectively realized, the damage of the foreign objects to the cable is reduced, and the reformation of the reserved cable is promoted, effective protection of the cable is achieved.

(2) The opening and closing of the outer opening and closing pipe are controlled through the matching of the transverse plate and the main fastening piece, the outer opening and closing pipe is convenient to install on a cable according to actual needs and is convenient to replace when damaged, the opening and closing of the inner opening and closing pipe is controlled through the matching of the short plate and the auxiliary fastening piece, the outer opening and closing pipe is convenient to install on the cable according to actual needs, and replacement is convenient when damaged.

(3) The cable between the pair of fixed point sleeves is placed in the double-layer protective pipe in a loose and bending shape and can be used as a reserved cable, the cable can move along with the shaking of seawater or a wind driven generator in seawater due to the frequent fluctuation and oscillation of seawater and is acted by a pulling force, when the cable is excessively pulled, the outer half cylinder and the inner half cylinder can be mutually far away from each other under the action of the cable pulling force, the double-layer protective pipe is stretched to release the reserved cable in the double-layer protective pipe to adapt to the shaking of the seawater or the wind driven generator, and therefore the tensile force damage to the cable is reduced; meanwhile, the elastic belt stretches under tension, and the tension sensor is applied with tension through the elasticity of the elastic belt, so that the signal of the tension sensor changes.

(4) When the shaking amplitude of the seawater or the wind driven generator is reduced until the seawater or the wind driven generator stops, the double-layer protective pipe can automatically retract under the action of the elastic force of the elastic belt, the cable is stored in the double-layer protective pipe again to serve as a reserved cable in the next tensioning process, and the signal sensed by the tension sensor changes again to recover to a normal range value; when the tension sensor detects that the cable is in a high-strength tension state for a long time, the tension sensor indicates that the cable is possibly blocked by an external interceptor, and the double-layer protection tube cannot retract normally. Therefore, through the process, the over-pulling protection of the cable can be effectively realized, and the cable is not easy to be damaged due to over-pulling caused by seawater or shaking of the wind driven generator.

Drawings

FIG. 1 is a schematic view of the mounting structure of the present invention;

FIG. 2 is a first perspective view of a double-layered sheath according to the present invention;

FIG. 3 is a second perspective view of the double-layered sheath of the present invention;

FIG. 4 is a first perspective view of the inner open/close tube of the present invention;

FIG. 5 is a schematic front view of a double-layered protection tube according to the present invention;

FIG. 6 is a schematic view of the structure at A in FIG. 5;

FIG. 7 is a second perspective view of the inner opening/closing tube of the present invention;

FIG. 8 is a schematic front view of a double-layered protection tube according to the present invention;

FIG. 9 is a schematic front view of a double-layered protection tube according to the present invention;

fig. 10 is a front view of the double-layered sheath and the fixed point sheath of the present invention.

The reference numbers in the figures illustrate:

1 air pump, 2 air storage tanks, 31 outer half cylinders, 32 transverse plates, 33 air bags, 34 inflation pipes, 35 main limiting plates, 41 inner half cylinders, 4101 holes, 42 short plates, 43 auxiliary limiting plates, 5 fixed point sleeves, 501 ring grooves, 502 round holes, 6 tension sensors, 7 elastic belts, 8 hanging buckles, 9 hanging rings, 10 vertical plates, 11 main flexible pipes and 12 auxiliary flexible pipes.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; 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.

Example (b):

referring to fig. 1, a submarine cable protective pipe assembly for offshore wind power generation comprises an air pump 1, an air storage tank 2 and a plurality of double-layer protective pipes arranged outside the cable, wherein the air pump 1 and the air storage tank 2 are both arranged inside a wind power generator, referring to fig. 2 and fig. 3, the double-layer protective pipes comprise an outer opening pipe and an inner opening pipe, the outer opening pipe comprises a pair of outer half cylinders 31 which are rotatably connected with each other, an air bag 33 is fixedly connected to the outer surfaces of the outer half cylinders 31, a pair of inflation pipes 34 are fixedly connected to the outer ends of the air bag 33, a main limiting plate 35 is fixedly connected to one end of each outer half cylinder 31, a transverse plate 32 is fixedly connected to the outer end of each outer half cylinder 31, a plurality of main fasteners are connected between the transverse plates 32, a plurality of main screw holes which are uniformly distributed are formed in the transverse plate 32, the plurality of main fasteners are respectively connected between the pair of main screw holes through the transverse plate 32 and the main fasteners, the opening and closing of the outer opening and closing pipe are controlled, the outer opening and closing pipe is convenient to install on a cable according to actual needs, and replacement is convenient when the outer opening and closing pipe is damaged.

Please refer to fig. 4, the inner opening and closing pipe includes a pair of inner half tubes 41 rotatably connected to each other, the outer ring diameter of the inner half tube 41 is smaller than the inner ring diameter of the outer half tube 31, one end of the inner half tube 41 away from the main limiting plate 35 is fixedly connected with an auxiliary limiting plate 43, the outer end of the inner half tube 41 is fixedly connected with a short plate 42, an auxiliary fastening member is connected between the pair of short plates 42, an auxiliary screw hole is formed in the short plate 42, the auxiliary fastening member is in threaded connection between the pair of auxiliary screw holes, the main fastening member and the auxiliary fastening member are both composed of a screw and a nut, and the opening and closing of the inner opening and closing pipe is realized by matching the short plate 42 and the auxiliary fastening member, and the inner opening and closing pipe is conveniently installed on a cable according to actual needs and is conveniently replaced when damaged.

Please refer to fig. 4 and 5, both sides of the double-layer protection tube are provided with the fixed point sleeves 5, the fixed point sleeves 5 are fixedly connected to the outer end of the cable, one end of the fixed point sleeve 5 close to the double-layer protection tube is provided with a ring groove 501, the main limiting plate 35 and the auxiliary limiting plate 43 are respectively inserted into the inner sides of the pair of ring grooves 501, bolts are respectively connected between the main limiting plate 35 and the auxiliary limiting plate 43 and the fixed point sleeves 5, the inner wall of the ring groove 501 is provided with a pair of round holes 502, the main limiting plate 35 and the auxiliary limiting plate 43 are provided with lock holes corresponding to the round holes 502, the round holes 502 and the lock holes are both connected with the bolts in a threaded manner, through the cooperation of the main limiting plate 35 and the auxiliary limiting plate 43 with the ring groove 501, the connection between the outer half cylinder 31 and the inner half cylinder 41 and the fixed point sleeves 5 is realized, the limitation is limited, and the double-layer protection tube is fastened through the bolts, thereby realizing the installation of the double-layer protection tube between the pair of the fixed point sleeves 5.

Referring to fig. 5 and 6, a tension sensor 6 is fixedly connected to an inner wall of one of the outer half cylinders 31 close to the main limiting plate 35, the tension sensor 6 and the air pump 1 are both electrically connected to the wind power generation system, an induction end of the tension sensor 6 is fixedly connected to an elastic belt 7, one end of the elastic belt 7 far away from the tension sensor 6 is fixedly connected to a hanging buckle 8, one end of one of the inner half cylinders 41 close to the main limiting plate 35 is fixedly connected to a hanging ring 9, and the hanging buckle 8 is matched with the hanging ring 9. Supplementary explanation: the short plate 42 is located at one side close to the auxiliary limit plate 43, when the outer half cylinder 31 and the inner half cylinder 41 are installed, the outer half cylinder 31 is located at one side of the short plate 42 far away from the auxiliary limit plate 43, the outer half cylinder 31 can be blocked by the short plate 42, and the inner half cylinder 41 is not prone to excessively moving towards the inner side of the outer half cylinder 31, so that the tension sensor 6 is not prone to being impacted, and the situation that the hanging buckle 8 and the hanging ring 9 are loosened is not prone to occurring.

The length of the cable between the adjacent pair of fixed point sleeves 5 is greater than that of the double-layer protective pipe on the outer side of the cable, after installation is completed, the cable between the pair of fixed point sleeves 5 is placed in the double-layer protective pipe in a loose and bent shape and can be used as a reserved cable, and the cable can move along with the shaking of seawater or a wind driven generator in seawater due to frequent fluctuation and oscillation of seawater and is subjected to pulling force; at the same time, the elastic band 7 is stretched under tension, and the tension sensor 6 is pulled by the elastic force of the elastic band 7, so that the signal of the tension sensor 6 changes.

Under normal conditions, when the shaking amplitude of the seawater or the wind driven generator is reduced until the seawater or the wind driven generator stops, the double-layer protective pipe can automatically retract under the action of the elastic force of the elastic belt 7, the cable is stored in the double-layer protective pipe again to be used as a reserved cable in the next pulling process, the signal sensed by the tension sensor 6 changes again, and the normal range value is recovered; under the abnormal condition, namely when the tension sensor 6 detects that the cable is in a high-strength tension state for a long time, the cable is possibly blocked by an external interceptor, so that the double-layer protective pipe cannot retract normally, at the moment, the tension sensor 6 transmits a signal to the wind power generation system, the wind power generation system controls the air pump 1 to pump air in the air storage tank 2 and convey the air to the air bags 33, the air bags 33 are inflated and expanded, the buoyancy of seawater borne by the air bags is increased, the air bags gradually float upwards, the cable floats upwards, the purpose of effectively keeping away from the interceptor is achieved, and when the influence of the interceptor is not received, the double-layer protective pipe automatically retracts under the action of the elastic belt 7. Therefore, through the process, the over-pulling protection of the cable can be effectively realized, and the cable is not easy to be damaged due to over-pulling caused by seawater or shaking of the wind driven generator.

According to the invention, the environment where the cable is located can be accurately detected by combining the detection results of the plurality of tension sensors 6, and when the tension detected by the tension sensors 6 is still not obviously changed after the air bag 33 is expanded, the result can be transmitted to the land control base station by the wind power generation system, so that the detection and maintenance of the environment of the cable are facilitated.

Referring to fig. 5 and 7, the vertical plate 10 is fixedly connected to the inner wall of the outer half tube 31 without the tension sensor 6, the inner half tube 41 without the suspension ring 9 is provided with a bar hole 4101, the vertical plate 10 is slidably connected with the inside of the bar hole 4101, and the vertical plate 10 is matched with the bar hole 4101, so that the outer half tube 31 and the inner half tube 41 are conveniently limited when the double-layer protection tube is installed, relative rotation is not easy to occur when the double-layer protection tube is used, the elastic band 7 is not easy to bend, and the detection result of the tension sensor 6 is disturbed.

Referring to fig. 1, a main flexible pipe 11 is arranged between two adjacent double-layer protective pipes, two ends of the main flexible pipe 11 are respectively in threaded connection with a pair of inflation pipes 34, an auxiliary flexible pipe 12 is connected between one double-layer protective pipe and an air pump 1, one end of the auxiliary flexible pipe 12 is in threaded connection with the inflation pipes 34, the other end of the auxiliary flexible pipe 12 is fixedly connected with an air outlet end of the air pump 1, a conveying pipe is fixedly connected between an air inlet end of the air pump 1 and an air storage tank 2, the main flexible pipe 11 is used for communicating a plurality of air bags 33, namely, the double-layer protective pipes are communicated, the auxiliary flexible pipe 12 is used for communicating the air pump 1 with the double-layer protective pipes, so that the double-layer protective pipes can float upwards by inflation at the same time, and an auxiliary cable is separated from a blocking object.

A submarine cable protective pipe assembly for offshore wind power generation is used in a method that:

s1, installation: preparing a plurality of double-layer protective tubes, respectively installing the double-layer protective tubes between a pair of adjacent fixed point sleeves 5 of the cable, loosely storing the cable between the pair of fixed point sleeves 5 in the double-layer protective tubes to form a reserved cable, and communicating the double-layer protective tubes with the air pump 1 through a main flexible tube 11 and an auxiliary flexible tube 12;

s2, when the cable excessively moves under the influence of sea water or shaking of the wind driven generator, the double-layer protective pipe is stretched under the traction action of the cable to release the reserved cable inside, the tension force of the cable is reduced, and when the tension force is reduced, the double-layer protective pipe automatically retracts to form the reserved cable;

s3, when the cable is blocked by the interceptor and the double-layer protective pipe is not retracted for a long time, the wind power generation system controls the air pump 1 to inflate the air bag 33, so that the cable floats upwards, the interceptor is separated, the retraction of the double-layer protective pipe is promoted, and the reserved cable is formed again;

s4, after the double-layer protection tube retracts, the air pump 1 pumps the air in the air bag 33 to enable the double-layer protection tube to form an initial shape.

The specific installation method of the double-layer protective pipe in the step S1 comprises the following steps:

s1-1, firstly, placing the pair of inner half cylinders 41 between the pair of fixed point sleeves 5 and sleeving the outer sides of the cables, inserting the auxiliary limiting plate 43 into the annular groove 501 close to the auxiliary limiting plate, fixing the auxiliary limiting plate by adopting a bolt, and fixing the pair of short plates 42 by using an auxiliary fastener;

s1-2, sleeving the pair of outer half cylinders 31 on the outer sides of the inner half cylinders 41, connecting the hanging buckles 8 with the hanging rings 9, inserting the main limiting plate 35 into the other ring groove 501, fixing the main limiting plate with bolts in the same way, and fixing the pair of transverse plates 32 through the main fasteners.

The invention installs a plurality of double-layer protective pipes on the cable according to the actual requirement, realizes the loose placement of partial cable inside the double-layer protective pipes, forms the reserved cable area, when the cable is over-migrated under the influence of sea water or the shaking of the wind driven generator, the double-layer protection pipe can be automatically stretched to release the reserved cable to adapt to the external environment tension, thereby effectively reducing the tensile force damage to the cable, when the external acting force disappears, the double-layer protective pipe automatically retracts to form a reserved cable again, providing protection for the next cable tension process, and, when the cable receives the foreign object interception and causes the unable time that contracts of double-deck pillar, can inflate to a plurality of double-deck pillar insides simultaneously through air pump 1, make its inflation drive cable come-up jointly, effectively realize breaking away from the foreign object fast, both reduced the destruction of foreign object to the cable, also promoted the reformation of reservation cable simultaneously, realized the effective protection to the cable.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.