System for dismantling marine hose by using buoyancy bladder and dismantling method thereof

Abstract

The invention relates to the technical field of ocean engineering, in particular to a system for dismantling an ocean hose by using a buoyancy bag and a dismantling method thereof.The system comprises a buoyancy bag assembly module, and the ocean hose is fixed to the seabed through additional gravity provided by a balancing weight. A solenoid valve is automatically controlled to be opened and closed to accurately adjust buoyancy, a buoyancy bag is sequentially inflated in sequence, the buoyancy and the weight of a balancing weight are slowly counteracted, the buoyancy bag is slowly expanded and stably inflated, the ocean hose is evenly and slowly stressed in the floating process, impact force borne by the hose is small, and balanced floating is guaranteed. The binding band temporarily binds and fixes the buoyancy bag, the balancing weight and the compressed air tank in the circumferential direction, relative displacement of the installation position of the buoyancy bag is prevented, when the inflation volume of the buoyancy bag reaches a set value, the binding band breaks open in time and fails, and the ocean hose is automatically floated through inflation of the buoyancy bag. And the buoyancy bag is continuously inflated to drive the hose to be quickly released in a fixed state at the seabed, so that the intervention of manual operation and mechanical equipment is reduced, and the marine hose is quickly and safely dismounted.

Description

Technical Field

[0001] The present invention relates to the technical field of marine engineering equipment, and in particular to a system for removing a marine hose using a buoyancy bladder and a removal method thereof. Background Art

[0002] Traditional marine hose removal technology usually relies on large-scale mechanical equipment for destructive recycling and treatment, which is complicated to operate and easily causes damage to the marine environment, especially in deep-sea environments. Traditional marine hose removal methods have problems such as high operational difficulty, high safety risks, and significant environmental impact. Although buoyancy-assisted devices are also used in existing technologies, there is a lack of systematic solutions. The development of mining technology and the need for cost control are increasingly not met, and the low-cost recovery or reuse of marine hoses cannot meet new regulations and requirements.

[0003] In order to solve such problems, buoyancy bladder technology has been introduced into pipeline removal. Through systematic buoyancy bladder removal of marine hose technology, the buoyancy device pre-installed during pipeline installation is used to provide buoyancy bladders with controllable buoyancy to assist in the floating and transportation of the pipeline, thereby simplifying the operation process and reducing the impact on the environment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a system and method for removing marine hoses using buoyancy bladders, which introduces buoyancy bladders into pipeline removal and uses a systematic buoyancy bladder to remove marine hoses. The buoyancy device pre-installed during pipeline installation is used to provide controllable buoyancy of the buoyancy bladder to assist in floating and transporting the pipeline, thereby simplifying the operating process and reducing the impact on the environment.

[0005] The technical problem to be solved by the present invention is achieved through the following technical solutions: a system for removing a marine hose using a buoyancy bladder, comprising a plurality of buoyancy bladder assembly modules uniformly arranged in sequence along the length direction of the marine hose, the buoyancy bladder assembly modules being installed in an uninflated initial state, the buoyancy bladder assembly modules comprising a buoyancy bladder fixedly wrapped around the marine hose, the buoyancy bladder body forming a closed inflation space, the buoyancy bladder being connected to a compressed air tank, and an electromagnetic valve being arranged between the buoyancy bladder and the compressed air tank;

[0006] The marine hose is provided with cables along the length direction, which pass through each buoyancy bag assembly module in turn and are connected to the corresponding solenoid valve. Several counterweights are provided on the outside of the buoyancy bag along the circumference. Each buoyancy bag assembly module is provided with a binding tie, which binds the buoyancy bag, the counterweight and the compressed air tank to the marine hose. The binding tie collapses and fails as the buoyancy bag expands and is stressed. The counterweight provides additional gravity to fix the marine hose to the seabed. The automatic control solenoid valve opens and closes to accurately adjust the buoyancy. The buoyancy bags are inflated in sequence. During the inflation process, the weight of the buoyancy bag is slowly offset by the weight of the counterweight, so the buoyancy bag expands slowly and is stably inflated. The marine hose is evenly and slowly stressed during the floating process, and the hose is subjected to small impact force, ensuring balanced floating. The buoyancy bag, counterweight and compressed air tank are temporarily tied and fixed circumferentially by binding ties to prevent relative displacement of the buoyancy bag installation position. At the same time, it is ensured that when the buoyancy bag is inflated to the set value, the binding tie will collapse in time and become invalid. The tube body is simply acted upon by the buoyancy bag to ensure that it rises completely to the water surface for easy removal.

[0007] As a further solution of the present invention, buckles and locks are respectively provided at both ends of the tying strap, and the buckles and locks are locked in a butt-jointed manner. The buoyancy bag expands to generate outward pressure, and the pressure exceeds the locking force of the buckles and locks, and the buckles and locks fail and separate. The tying strap plays a temporary binding role through the cooperation of the buckles and locks, temporarily tying the counterweight block to the marine hose body, and the tying strap remains stable until the pressure of the buoyancy bag reaches a certain level, and the buckles will separate, without manual intervention, and the locking automatically fails, thereby realizing automated dismantling and efficient operation.

[0008] As a further solution of the present invention, the binding tie is made of ultra-high molecular polyethylene material, and the binding tie is fixedly matched with the outer wall of the bound counterweight. The binding tie is integrated with the counterweight, and after the locking of the binding tie fails, it sinks to the bottom of the sea together with the counterweight, and will not float in the water, causing harm and impact on the animals and plants in the water, which is ecological and environmentally friendly.

[0009] As a further solution of the present invention, the compressed air tank is fixed to the bottom of the outer wall of the marine hose, the counterweights on both sides of the tube body are symmetrically arranged along the compressed air tank, a gas inlet and outlet are arranged on the compressed air tank, the gas inlet and outlet are provided with air inlet and outlet pipes, the other end of the air inlet and outlet pipes are connected to the buoyancy bag, and the solenoid valve is arranged on the air inlet and outlet pipes. The symmetrical arrangement of the counterweights can balance the center of gravity of the system and avoid the deviation or instability of the marine hose caused by uneven weight distribution. Reduce the interference of ocean currents or other external forces on the marine hose. The precise control of the gas inflow and outflow in the buoyancy bag by the solenoid valve can achieve precise control of the gas pressure in the buoyancy bag.

[0010] As a further solution of the present invention, the cable includes a power cable and a communication cable, the communication cable terminal is respectively connected to each solenoid valve signal, the communication cable is connected to an external signal source, the power cable terminal is respectively electrically connected to each solenoid valve, and the power cable is connected to an external power source. The power cable and the communication cable respectively assume the functions of power and signal transmission, and do not interfere with each other. The power cable specifically provides power, and the solenoid valve is continuously powered; the communication cable maintains stable signal transmission, and acts together on the solenoid valve, and the solenoid valve is precisely controlled.

[0011] As a further solution of the present invention, the buoyancy bladder is a bladder body wrapped in an annular shape, a spherical shape or a cylindrical shape. Buoyancy bladders of different shapes can be selected according to needs, and can flexibly work in a wider buoyancy range to meet the needs of different working environments.

[0012] As a further solution of the present invention, the counterweight block is a prefabricated block made of cement, and the size, weight and number of the prefabricated block are independently calculated according to each corresponding pipeline. By independently designing the layout of the counterweight block, it is ensured that each pipeline can obtain the best buoyancy balance, ensure that the pipeline is in a preset ideal state in the water, and avoid the risk of equipment damage or failure due to uneven buoyancy.

[0013] As a further solution of the present invention, a method for removing a marine hose using a buoyancy bladder is provided, and a system for removing a marine hose using a buoyancy bladder is provided. The system first performs a pretreatment procedure to remove the marine hose, and then installs the buoyancy bladder assembly module according to the number and size of the buoyancy bladders determined according to the specific parameters of the marine hose. The buoyancy bladder assembly module is inflated and released, and the buoyancy bladder continues to be inflated to drive the marine hose to float. Then, the marine hose is removed and hoisted. The inflation of the buoyancy bladder automatically floats the marine hose, and the continuous inflation of the buoyancy bladder drives the hose to be quickly released from its fixed state on the seabed, thereby reducing the intervention of manual operation and mechanical equipment, and realizing the rapid and safe removal of the marine hose. Specifically, the following steps are included:

[0014] Step 1: first collect the installation parameters of the marine hose to be installed, determine the size, weight and position of the marine hose, evaluate the installation environment, calculate the required buoyancy, and determine the number and size of the buoyancy capsules;

[0015] The collected marine hose installation parameters specifically include pipeline weight, pipeline inner diameter, total pipeline length, residual medium weight per unit length of pipeline (referring to un-emptied medium), buoyancy bag volume, buoyancy bag installation spacing, number of buoyancy bags, weight of buoyancy bag accessories such as gas cylinders, seawater density, and gravity acceleration;

[0016] Step 2: Installation of the buoyancy bladder assembly module. During the installation of the marine hose, the buoyancy of a single inflatable bladder is determined by finite element analysis of the bending strain during the pipeline lifting process, and then the spacing of the buoyancy bladder assembly modules on the marine hose is calculated. The buoyancy bladder assembly modules are tied at predetermined spacings, and the cables are sequentially passed through the marine hose along the length direction of the marine hose.

[0017] The calculation formula for buoyancy bladder arrangement is as follows:

[0018]

[0019] L p >ΔL b ×N b (2)

[0020] Where: Mp is the pipe weight, in kg / m; D p is the inner diameter of the pipe, in m; L p is the total length of the pipeline, in meters; M v为 The weight of the residual medium per unit length of the pipeline (referring to the medium that has not been emptied), in kg / m, V b为 Buoyancy bladder volume, in m 3 , △L b Buoyancy bag installation spacing, unit: m, N b为 Number of buoyancy bags; M b为 The weight of the buoyancy bag accessories such as the gas cylinder, in kg; ρ is the density of seawater, in kg / m 3 ; g is the acceleration due to gravity, the unit is N / kg;

[0021] Step 3: The buoyancy bladder assembly module is inflated and released. The signal source transmits a signal through a cable to control the solenoid valve that opens the compressed air tank. During the inflation and expansion process of the buoyancy bladder, the tension of the binding tie increases continuously, and the lock is released, and the counterweight is separated from the buoyancy bladder.

[0022] Step 4: the buoyancy bag continues to be inflated, the cable transmits a signal, and the number of compressed air tanks that need to be opened is calculated, and the solenoid valves of the corresponding number of compressed air tanks are opened in sequence. The buoyancy of the buoyancy bag is greater than the gravity of the ocean hose, and the ocean hose floats;

[0023] Step 5: Dismantling and lifting the marine hose. After the marine hose floats to the surface, it is lifted onto the ship by a ship-borne crane for dismantling and recycling, or towed to the shore for dismantling.

[0024] The beneficial effects of the present invention are as follows: the present invention provides a system for removing a marine hose using a buoyancy bladder, comprising a plurality of buoyancy bladder assembly modules evenly distributed in sequence along the length direction of the marine hose, and the marine hose is fixed to the seabed by providing additional gravity through a counterweight. The electromagnetic valve is automatically controlled to open and close to accurately adjust the buoyancy, and the buoyancy bladders are inflated in sequence. During the inflation process, the buoyancy bladders slowly expand and inflate stably by slowly offsetting the weight of the counterweight. The marine hose is evenly and slowly stressed during the floating process, and the hose is subjected to little impact force, ensuring balanced floating; the inflation of the buoyancy bladder automatically floats the marine hose, and the continuous inflation of the buoyancy bladder drives the hose to be quickly released from its fixed state on the seabed, reducing the intervention of manual operation and mechanical equipment, and realizing the rapid and safe removal of the marine hose.

[0025] The buoyancy bag, counterweight and compressed air tank are temporarily tied and fixed along the circumference by bundling cable ties to prevent relative displacement of the installation position of the buoyancy bag. At the same time, when the inflation volume of the buoyancy bag reaches the set value, the binding cable ties will be broken and invalidated in time. The pipe body is simply acted by the buoyancy bag to ensure that it rises completely to the water surface for easy removal. The entire floating process does not require manual intervention, and the locking automatically fails, thus realizing automated removal and efficient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the system structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the floating state of the marine hose of the present invention;

[0028] Figure 3 It is a schematic diagram of assembling the buoyancy bag of the present invention;

[0029] Figure 4 It is a schematic diagram of a state where the binding tie of the present invention is released and separated from the tube body;

[0030] Figure 5 It is a schematic diagram of the buoyancy bag of the present invention in a fully inflated state;

[0031] Figure 6 It is a schematic diagram of the matching structure of the counterweight block and the binding tie of the present invention.

[0032] Among them: 1-buoyancy bag assembly module, 2-cable, 3-marine hose, 4-clip, 401-lock, 5-counterweight, 6-buoyancy bag, 7-binding tie, 8-compressed air tank, 801-inlet and outlet pipes, 802-solenoid valve. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The serial numbers of the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] Example 1

[0037] like Figure 1 As shown, a system for removing a marine hose using a buoyancy bladder comprises a plurality of buoyancy bladder assembly modules 1 uniformly arranged in sequence along the length direction of the marine hose 3, the buoyancy bladder assembly module is installed in an uninflated initial state, the buoyancy bladder assembly module comprises a buoyancy bladder 6 fixedly wrapped around the marine hose, the buoyancy bladders are respectively tied to the hose body by ropes, the buoyancy bladder body forms a closed inflatable space, and the buoyancy bladder is a bladder body wrapped in an annular shape, a spherical shape or a cylindrical shape. Buoyancy bladders of different shapes are selected according to different on-site requirements.

[0038] The annular buoyancy bag makes the gas distribution in the bag more uniform. The annular structure can provide stable buoyancy under different working conditions and is used in scenes where it is necessary to surround an object or maintain a stable buoyancy state.

[0039] The spherical buoyancy bag has a high degree of symmetry and can evenly distribute the external pressure, ensuring that the buoyancy bag can respond evenly under multi-directional forces. The spherical structure can provide stable buoyancy in the underwater environment and reduce the impact of water flow or environmental changes on the buoyancy bag.

[0040] The cylindrical buoyancy bag has a larger storage space and provides greater buoyancy. The cylindrical buoyancy bag has better buoyancy adjustment ability in scenes where continuous buoyancy adjustment or the support of objects is relatively stable.

[0041] like Figure 3 As shown, the buoyancy bag is connected to a compressed air tank 8, which is disposed between the buoyancy bag 6 and the marine hose 3, and the compressed air tank is fixed to the bottom of the outer wall of the marine hose.

[0042] like Figure 2 As shown, before use, the compressed air tank 8 is filled with compressed air in advance, and the compressed air reserve is sufficient. A solenoid valve 802 is provided between the buoyancy bag 6 and the compressed air tank. A gas inlet and outlet are provided on the compressed air tank 8. An air inlet and outlet pipe 801 is provided at the gas inlet and outlet. The other end of the air inlet and outlet pipe is connected to the buoyancy bag 6, and the solenoid valve is set on the air inlet and outlet pipe.

[0043] When in use, the electromagnetic valve 802 corresponding to the buoyancy bag is opened, and the compressed air in the compressed air tank is continuously delivered to the buoyancy bag 6, the volume of the buoyancy bag is continuously increased, the buoyancy generated is continuously increased, and the tube body rises with the buoyancy.

[0044] The marine hose is provided with a cable 2 along its length, which passes through each buoyancy bag assembly module in turn and is connected to the corresponding solenoid valve 802. The cable includes a power cable and a communication cable. The communication cable terminal is respectively connected to each solenoid valve signal, and the communication cable is connected to an external signal source. The power cable terminal is respectively electrically connected to each solenoid valve, and the power cable is connected to an external power source.

[0045] The power cable 2 always ensures that the solenoid valve 802 is in a power supply state, and the communication cable provides a control signal to each solenoid valve 802. One end of the marine hose is connected to the external system. During the buoyancy process, it first floats from the connection side. The buoyancy bag set on the marine hose close to the connection side is inflated first, and the first solenoid valve is started and opened, so that the corresponding first buoyancy bag is pre-inflated, and the buoyancy continues to increase. After a preset interval, the next solenoid valve is started and opened in sequence, and the corresponding next buoyancy bag is inflated, and the buoyancy continues to increase. According to the above procedure, after the same preset interval, the subsequent solenoid valves are opened in sequence. In this way, the marine hose slowly rises from one end to the other end until the hose is fully risen and floats on the water surface.

[0046] An even number of counterweights 5 are provided on the outside of the buoyancy bag along the circumferential direction. The counterweights on both sides of the tube body are symmetrically arranged along the compressed air tank 8. The total mass of the counterweights on both sides of the tube body is consistent. The tube body always remains balanced during the process of being stationary underwater and floating, and will not tip over due to the weight factors on both sides, and will float steadily.

[0047] like Figure 4-Figure 5 As shown, when the buoyancy bag is continuously inflated, the buoyancy and the gravity of the counterweight are offset, the buoyancy gradually becomes greater than the gravity and floats up, the buoyancy bag continues to be inflated, and the volume of the buoyancy bag continues to increase.

[0048] Each buoyancy bag assembly module is provided with a binding tie 7, which is made of ultra-high molecular polyethylene material. The binding tie binds the buoyancy bag, the counterweight and the compressed air tank to the marine hose. The two ends of the binding tie 7 are respectively provided with a buckle 4 and a lock 401. The buckle and the lock are docked and locked. The expansion of the buoyancy bag generates outward pressure. The pressure exceeds the locking force of the buckle and the lock, and the buckle and the lock fail and separate. The binding tie collapses and fails as the buoyancy bag expands. The tube body at the failure point of the binding tie 7 is only affected by the buoyancy of the buoyancy bag and continues to float until it completely floats to the water surface.

[0049] Because the buoyancy bags 6 float up in sequence according to the preset time, the corresponding binding straps also fail at the corresponding intervals, and the tube body rises slowly in a streamlined shape.

[0050] like Figure 6 As shown, the binding tie 7 is fixedly matched with the outer wall of the bound counterweight block 5. The counterweight block is a prefabricated block made of cement. The size, weight and quantity of the prefabricated block are calculated independently according to each corresponding pipeline.

[0051] When the binding tie 7 fails, the binding tie sinks to the seabed together with the gravity brought by the counterweight, and will not cause pollution and impact on the marine environment.

[0052] Example 2

[0053] A method for removing a marine hose using a buoyancy bladder, using a system for removing a marine hose using a buoyancy bladder, wherein the system first performs a pre-treatment procedure to remove the marine hose, and then installs a buoyancy bladder assembly module according to the number and size of the buoyancy bladders 6 determined according to the specific parameters of the marine hose, and then the buoyancy bladder assembly module 1 is inflated and released, and the buoyancy bladder continues to be inflated to drive the marine hose to float, and then the marine hose is removed and hoisted, which specifically includes the following steps:

[0054] Step 1: first collect the installation parameters of the marine hose 3 to be installed, determine the size, weight and position of the marine hose, evaluate the installation environment, calculate the required buoyancy, and determine the number and size of the buoyancy capsules;

[0055] Before installing the marine hose 3, you first need to collect basic parameters related to the installation. The collected marine hose installation parameters specifically include the pipe weight M p , pipe inner diameter D p , total length of pipeline m, residual medium weight per unit length of pipeline (referring to undischarged medium) M v , buoyancy bladder volume V b , buoyancy bag installation distance △L b , number of buoyancy bags N b , gas cylinder and other buoyancy bag accessories weight M b , seawater density ρ, gravitational acceleration g; evaluate the physical properties of the hose and provide basic data for subsequent installation and operation. Determine the installation location of the hose, referring to the seabed topography, surrounding water flow conditions and environmental conditions of the installation area. Accurately calculate the buoyancy of the hose, and determine the required number, size and installation spacing of the buoyancy capsules based on factors such as the weight, size and water depth of the hose. The buoyancy capsules should be evenly distributed to avoid deformation or damage caused by uneven force on the hose.

[0056] During the installation process, the buoyancy capsule has adaptability and adjustment space to take into account changes in the marine environment, such as tides, wind and waves.

[0057] Step 2: Install the buoyancy bladder assembly module 1. During the installation of the marine hose, the buoyancy of a single inflatable bladder is determined by analyzing the bending strain during the pipeline lifting process through finite element analysis, and then the setting spacing of the buoyancy bladder assembly module on the marine hose is calculated. The buoyancy bladder assembly module is tied at a predetermined spacing, and the cable is sequentially passed through the marine hose along the length direction of the marine hose;

[0058] The calculation formula for buoyancy bladder arrangement is as follows:

[0059]

[0060] L p >ΔL b ×N b (2)

[0061] Among them: pipeline weight Mp (kg / m), pipeline inner diameter D p (m), total length of pipeline m (m), residual medium weight per unit length of pipeline (referring to un-emptied medium) M v (kg / m), buoyancy bladder volume V b (m 3 ) Buoyancy bag installation distance △L b (m), number of buoyancy bags N b , gas cylinders and other buoyancy bag accessories weight M b (kg), seawater density ρ (kg / m 3 ), gravitational acceleration g (N / kg);

[0062] Step 3: The buoyancy bladder assembly module is inflated and released. The signal source transmits a signal through a cable to control the solenoid valve that opens the compressed air tank. During the inflation and expansion process of the buoyancy bladder, the tension of the binding tie increases continuously, and the lock is released, and the counterweight is separated from the buoyancy bladder.

[0063] When the buoyancy bag 6 needs to be deployed, the signal source transmits a signal to the electromagnetic valve 802 of the compressed air tank through a cable. The electromagnetic valve is opened, and the compressed air is quickly released into the buoyancy bag, and the buoyancy bag 6 is inflated and gradually deployed.

[0064] During the inflation process, the expansion force of the buoyancy bag increases the tension of the tie-down tie, which is tightened and eventually breaks or loosens. The lock of the tie-down tie is pulled harder and becomes unfastened. The tie-down tie and the counterweight sink together under the force of gravity.

[0065] In step 4, the buoyancy bag 6 continues to be inflated, and the cable 2 transmits a signal. After calculation, the number of compressed air tanks that need to be opened is obtained, and the solenoid valves of the corresponding number of compressed air tanks are opened in sequence. The buoyancy of the buoyancy bag is greater than the gravity of the ocean hose, and the ocean hose floats; the ocean hose is driven by the buoyancy of the buoyancy bag to slowly float up.

[0066] Step 5, the marine hose 3 is removed and hoisted. After the marine hose floats to the surface, it is hoisted onto the ship by a ship-borne crane for removal and recycling, or floated and towed to the shore for removal.

[0067] When a marine hose has completed its mission or needs to be replaced, it must be retrieved from the seafloor through a series of steps and transferred to a suitable removal site.

[0068] Once the marine hose floats to the surface, the shipboard crane or other lifting equipment comes into play, using steel cables or slings to safely lift the hose from the water. The crane operator needs to accurately control the lifting process to prevent the hose from being damaged during the lifting process. During the lifting process, the marine hose must remain stable to avoid shaking or entanglement during the lifting process. After the marine hose is lifted onto the ship, it will be dismantled according to the specific situation, or it will be transported to the shore for further dismantling, recycling and processing. Precise operation, effective coordination and full safety monitoring are relied upon to ensure that the hose is not damaged and can be efficiently and safely processed and recycled.

[0069] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A system for removing a marine hose using a buoyancy bladder, characterized in that: The invention comprises a plurality of buoyancy bladder assembly modules (1) uniformly arranged in sequence along the length direction of the tube body of an ocean hose (3); the buoyancy bladder assembly module is installed in an initial non-inflated state; the buoyancy bladder assembly module comprises a buoyancy bladder (6) fixedly wrapped around the ocean hose; the buoyancy bladder body forms a closed inflation space; the buoyancy bladder is connected to a compressed air tank (8); and a solenoid valve (802) is provided between the buoyancy bladder and the compressed air tank; The marine hose is provided with a cable (2) along its length, the cable passes through each buoyancy bag assembly module in sequence and is connected to a corresponding electromagnetic valve, a plurality of counterweight blocks (5) are provided outside the buoyancy bag along its circumference, each buoyancy bag assembly module is provided with a binding tie (7), the binding tie (7) binds the buoyancy bag (6), the counterweight block (5) and the compressed air tank (8) to the marine hose, and the binding tie collapses and becomes ineffective when the buoyancy bag is expanded and stressed.

2. The system for removing a marine hose using a buoyancy bladder according to claim 1, characterized in that: A buckle (4) and a lock (401) are respectively provided at both ends of the binding strap. The buckle and the lock are butt-jointed and locked. The buoyancy bag expands to generate outward pressure. When the pressure exceeds the locking force of the buckle and the lock, the buckle and the lock fail and separate.

3. The system for removing a marine hose using a buoyancy bladder according to claim 2, characterized in that: The binding tie (7) is made of ultra-high molecular weight polyethylene material, and the binding tie is fixedly matched with the outer wall of the bound counterweight.

4. The system for removing a marine hose using a buoyancy bladder according to claim 3, characterized in that: The compressed air tank (8) is fixed to the bottom of the outer wall of the marine hose, and the counterweights on both sides of the tube body are symmetrically arranged along the compressed air tank. The compressed air tank is provided with a gas inlet and outlet, and an air inlet and outlet pipe (801) is provided at the gas inlet and outlet. The other end of the air inlet and outlet pipe is connected to the buoyancy bag, and the electromagnetic valve (802) is arranged on the air inlet and outlet pipe.

5. The system for removing a marine hose using a buoyancy bladder according to claim 4, characterized in that: The cable (2) comprises a power cable and a communication cable, wherein the communication cable terminal is respectively connected to each solenoid valve signal, the communication cable is connected to an external signal source, the power cable terminal is respectively electrically connected to each solenoid valve, and the power cable is connected to an external power source.

6. The system for removing a marine hose using a buoyancy bladder according to claim 5, characterized in that: The buoyancy bag (6) is a bag body with an annular package, a spherical package or a cylindrical package.

7. The system for removing a marine hose using a buoyancy bladder according to claim 6, characterized in that: The counterweight block (5) is a prefabricated block made of cement, and the size, weight and quantity of the prefabricated block are calculated independently according to each corresponding pipeline.

8. A method for removing a marine hose using a buoyancy bladder, using the system for removing a marine hose using a buoyancy bladder according to claim 7, characterized in that: The system removes the marine hose by first performing a pre-processing procedure, and then installing the buoyancy bag assembly module according to the number and size of the buoyancy bags determined by the specific parameters of the marine hose. The buoyancy bag assembly module is inflated and released, and the buoyancy bag continues to be inflated to drive the marine hose to float, and then the marine hose is removed and hoisted, which specifically includes the following steps: Step 1: first collect the installation parameters of the marine hose (3) to be installed, determine the size, weight and position of the marine hose, evaluate the installation environment, calculate the required buoyancy, and determine the number and size of the buoyancy capsules; The collected marine hose installation parameters specifically include pipeline weight, pipeline inner diameter, total pipeline length, residual medium weight per unit length of pipeline (referring to un-emptied medium), buoyancy bag volume, buoyancy bag installation spacing, number of buoyancy bags, weight of buoyancy bag accessories such as gas cylinders, seawater density, and gravity acceleration; Step 2: installing the buoyancy bladder assembly module (1). During the installation of the marine hose, the buoyancy of a single inflatable bladder (1) is determined by analyzing the bending strain during the pipeline lifting process using finite element analysis, and then the spacing of the buoyancy bladder assembly modules on the marine hose is calculated. The buoyancy bladder assembly modules are tied at predetermined spacings, and the cables are sequentially passed through the marine hose along the length direction of the marine hose. The calculation formula for buoyancy bladder arrangement is as follows: L p >ΔL b ×N b (2) Where: Mp is the pipe weight, in kg / m; D p is the inner diameter of the pipe, in m; L p is the total length of the pipeline, in meters; M v为 The weight of the residual medium per unit length of the pipeline (referring to the medium that has not been emptied), in kg / m, V b为 Buoyancy bladder volume, in m 3 , △L b Buoyancy bag installation spacing, unit: m, N b为 Number of buoyancy bags; M b为 The weight of the buoyancy bag accessories such as the gas cylinder, in kg; ρ is the density of seawater, in kg / m 3 ; g is the acceleration due to gravity, the unit is N / kg; Step 3: The buoyancy bladder assembly module is inflated and released, and the signal source transmits a signal through a cable to control the opening of the electromagnetic valve (802) of the compressed air tank. During the inflation and expansion process of the buoyancy bladder, the tension of the binding tie is continuously increased, and the lock is released, and the counterweight is separated from the buoyancy bladder; Step 4: the buoyancy bag continues to be inflated, the cable transmits a signal, and the number of compressed air tanks (8) that need to be opened is calculated, and the solenoid valves (802) of the corresponding number of compressed air tanks are opened in sequence, the buoyancy of the buoyancy bag is greater than the gravity of the ocean hose, and the ocean hose floats; Step 5, dismantling and lifting the marine hose (3). After the marine hose floats to the surface, it is lifted onto the ship by a ship-borne crane for dismantling and recycling, or floated to the shore for dismantling.

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