A floating oil hose assembly and transfer platform and an overall installation method on water

Abstract

The present invention provides a floating oil hose assembly and transfer platform and an overall installation method on water, which relate to the field of ship engineering technology. The floating oil hose assembly and transfer platform includes a hose assembly conveyor roller, an air tightness testing device, and a mobile launching and transferring platform. First, the splicing of multiple sections of oil hoses is completed on the hose assembly conveyor roller located on land; after the air tightness test is performed using the air tightness testing device; the spliced ​​oil hoses are transferred to the water via the mobile launching and transferring platform, and towed to the oil tanker by a tugboat, and the end of the hose is lifted by a crane to the crude oil unloading winch of the oil tanker for port installation. The present invention pre-assembles the floating oil hose, facilitates the construction process, improves the pass rate of the air tightness test, has high construction safety and reliability, and greatly saves construction costs.

Description

Technical Field

[0001] The present invention relates to the technical field of ship engineering, in particular to a floating oil hose assembly and transfer platform and an overall water installation method. Background Art

[0002] A floating production storage and offloading vessel (FPSO) is a large-scale, integrated offshore oil production facility integrating crude oil extraction, storage, processing, and transportation. The crude oil unloading winch and accompanying floating oil hose are core equipment on these vessels. During crude oil unloading operations on an FPSO, the floating oil hose is connected to the FPSO's offloading unit and the crude oil carrier vessel, respectively. Its primary function is to transfer crude oil from the FPSO to the carrier vessel and then to the crude oil receiving site. The floating oil hose has a diameter of approximately 1500 mm and consists of approximately 20 short pipes per set, each weighing approximately 5 tons. The floating oil hose arrives in disassembled units. Installation typically requires the completion of commissioning of the crude oil unloading winch. The 20 or so short pipes are then assembled onto the equipment in sections. The hose is then re-submerged in water for airtightness testing and final inspection to ensure that there are no leaks or marine contamination during crude oil transfer.

[0003] In this solution, the installation and construction of the floating oil hose takes a long time, occupies a lot of equipment resources, and the safety risk of air tightness testing on water is high. A new, efficient and safe installation technology solution is urgently needed. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention aims to provide a floating oil hose assembly and transfer platform and an overall installation method on water. After multiple oil hoses are assembled and air-tightness tested on the ground, the assembled floating oil hoses are installed on the crude oil unloading winch at one time. This method has the advantages of simple process flow, high on-site construction efficiency, guaranteed safety, and short equipment resource occupancy period.

[0005] The present invention achieves the above technical objectives through the following technical means.

[0006] A floating oil hose assembly and transfer platform, characterized by comprising a hose assembly conveyor roller conveyor composed of multiple hose assembly conveyor roller conveyor units connected end to end and arranged in sequence along the hose assembly direction, an air tightness testing device for testing the air tightness of the assembled hoses, and a mobile launching transfer platform that can be moved to the tail of the hose assembly conveyor roller conveyor and placed at the end of the dock;

[0007] The hose assembly conveying roller table unit includes a roller table chassis, rollers mounted on the roller table chassis, a motor, a sprocket mounted on the roller shaft and the motor output shaft, and a chain matched with the sprocket;

[0008] The air tightness test device includes a blind flange with a fresh water injection port and a pressure injection port that can be matched with the oil hose port, as well as a fresh water injection pipeline, a booster pump, a pump pressure tooling and a vacuum pressure gauge;

[0009] The movable launching transfer platform comprises a horizontal extension portion, a stepped support frame, and a pulley block arranged on the upper surface of the horizontal extension portion and at the protruding corners of the step.

[0010] Furthermore, the number of the hose assembly conveying roller units is 12, each of which is 18 meters long, and a single set of rollers can bear a load of 80 tons.

[0011] Furthermore, the rollers are divided into active rollers 1 and driven rollers, and the number of driven rollers is not greater than the number of active rollers, and the active rollers and driven rollers are arranged at intervals; the active rollers are fixedly connected to the roller shaft, and the driven rollers are rotatably connected to the roller shaft; the sprocket is fixed on the roller shaft of the active roller.

[0012] Furthermore, the number of sprockets on the roller shaft of the active roller is 2, and the sprockets of the active roller are connected in a relay-type transmission manner through multiple chains.

[0013] Furthermore, the step height of the stepped support frame of the mobile launching transfer platform ensures that the turning radius of the hose is not less than 3.5 meters.

[0014] Furthermore, the motor output shaft is connected to the reducer, the output shaft of the reducer is connected to the long shaft through a coupling, and the sprocket driven by the motor is fixed on the long shaft; the stepped support frame of the mobile launching transfer platform is welded by square steel, and the recessed corners of the steps are reinforced by corner connectors.

[0015] The method for integrally installing a floating oil hose on water based on the floating oil hose assembly and transfer platform is characterized by comprising the following steps:

[0016] (1) Complete the splicing of multiple sections of oil hose on the hose assembly conveyor roller on land;

[0017] (2) Use the air tightness test device to seal the ends of the spliced ​​oil hose, add water and pressurize the inside of the spliced ​​oil hose to perform an air tightness test;

[0018] (3) The spliced ​​oil hose that has passed the air tightness test is transferred to the water via a mobile launching transfer platform, and both ends of the hose are fixed to the side of a tugboat. The two tugboats then tow the assembled oil hose to the side of the tanker;

[0019] (4) Use a crane to lift the end of the hose to the crude oil unloading winch of the tanker for port installation. After installation, the crane is withdrawn and the crude oil unloading winch is started to recover the remaining hose in the water onto the winch.

[0020] Furthermore, in step (1), the oil hose units to be assembled are placed on two of the hose assembly conveying roller units respectively, and the motor-driven rollers of the two hose assembly conveying roller units are used to rotate to move the two sections of the oil hose units to be spliced ​​so that the two sections are close to each other and docked.

[0021] Furthermore, during the air tightness test in step (2), the other end of the oil hose is sealed by a blind flange equipped with a fresh water injection port and a pressure injection port. After the fresh water injection port is filled with water, the valve of the fresh water injection port is closed, and a pump pressure fixture and a vacuum pressure gauge are installed on the pressure injection port. The inside of the floating oil hose is pressurized with fresh water using a booster pump. When the pressure reaches 21 kg, the valve on the pump pressure fixture is closed, and a pressure inspector is arranged to check the hose flange for leakage. If the internal pressure of the floating oil hose remains unchanged for 30 minutes, the pump pressure test is qualified.

[0022] Furthermore, after the air tightness test in step (2) is completed, the water in the hose is drained, and both ends are sealed before proceeding to step (3); in step (3), the process of transferring the spliced ​​oil hose into the water via the mobile launching transfer platform is as follows: starting the motor of the hose assembly conveyor roller, moving the assembled hose toward the water surface, and the front end of the assembled hose is lowered through the mobile launching transfer platform and slowly slides into the water in an arc shape.

[0023] Furthermore, before step (3), the spliced ​​oil hose is wrapped with a protective film and then transferred into water; in step (4), after the oil hose is connected to the crude oil unloading winch port, the protective film is removed.

[0024] Compared with the existing technical solutions, the present invention has the following beneficial effects:

[0025] 1. Pre-emptive construction. The original plan required hose installation to begin only after the crude oil unloading winch was commissioned and operational. This limited the construction window and made it difficult to adjust the production cycle. The floating oil hose integrated installation method described in this invention avoids the commissioning schedule of the crude oil unloading winch. Bulk floating oil hose spools can be assembled in advance, allowing installation time to be selected based on the equipment commissioning progress, allowing for flexible construction phases.

[0026] 2. Convenient Construction Process: The floating oil hose assembly method described in this invention allows the floating oil hose to be assembled on the ground, improving the construction environment and difficulty of the process of lifting and connecting hose units one by one. After assembly, the entire unit can be launched into the water for installation, eliminating the previous method of on-site high-altitude assembly on a vessel.

[0027] 3. Improve the airtightness test pass rate. This invention performs airtightness testing on the hose on the ground. The test is not affected by thermal expansion and contraction caused by changes in seawater temperature, improving the test environment, stabilizing pressure, and improving test efficiency.

[0028] 4. Highly safe and reliable construction. Through innovative technical solutions, the floating oil hose installation method described in this invention reduces both waterborne and aerial construction time by 60% compared to previous methods, reducing engineering risks and improving safety.

[0029] 5. Save construction costs, greatly reduce construction hours and the use of various auxiliary equipment and facilities. It is estimated that the cost savings can be approximately 480,000 yuan. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the partial structure of the hose assembly conveying roller.

[0031] Figure 2 for Figure 1 Middle AA section view.

[0032] Figure 3 for Figure 1 Mid-CC section view.

[0033] Figure 4 Schematic diagram of the chain transmission mechanism of the hose assembly conveying roller unit.

[0034] Figure 5 This is a structural diagram of a mobile launching transfer platform.

[0035] Figure 6 This is a schematic diagram of the hose launching status at a tide level of 4.5 meters.

[0036] Figure 7 Schematic diagram of the hose launching status at 0-meter tide level.

[0037] 1-driving roller, 2-roller chassis, 3-motor cover, 4-motor, 5-sprocket, 6-key, 7-long shaft, 8-reducer base, 9-protective cover, 10-ball bearing with seat, 11-first retaining ring, 12-driven roller, 13-yielding driven roller, 14, reducer, 15-coupling, 16-second retaining ring, 17-first chain, 18-second chain, 19-horizontal extension, 20-angle connector, 21-square steel. DETAILED DESCRIPTION

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0039] The floating oil hose assembly and transfer platform described in this invention comprises a hose assembly conveyor consisting of multiple hose assembly conveyor units arranged end-to-end along the hose assembly direction, an air tightness testing device for testing the hose air tightness after assembly, and a mobile launching and transfer platform that can be moved to the rear of the hose assembly conveyor and positioned at the end of the dock. The floating oil hose assembly and transfer platform is capable of assembling several hose sections into a single unit. After assembly, water is added to the hose interior for pressure testing, and the assembled hose is transferred into the water. This makes ground operations quick and convenient, ensuring safe construction.

[0040] like Figure 1 As shown, the hose assembly conveying roller unit includes a roller chassis 2, rollers mounted on the roller chassis 2, a motor 4, a sprocket 5 mounted on the roller shaft and the output shaft of the motor 4, and a chain that cooperates with the sprocket 5. Each set of hose assembly conveying roller units is driven by a motor 4, which transmits power to the roller shaft through the chain to drive the roller. A motor 4 cover 3 is provided on the outside of the motor 4 for protection. The output shaft of the motor 4 is connected to the reducer 14, and the reducer 14 is mounted on the reducer base 8. The output shaft of the reducer 14 is connected to one end of the long shaft 7 through a coupling 15. The other end of the long shaft 7 is mounted on a ball bearing with a seat. The sprocket 5 driven by the motor 4 is fixed to the long shaft 7 by a key 6, as shown Figure 2 As shown. The sprocket 5 and reducer 14 are restrained by a first retaining ring 11 and a second retaining ring 16, respectively. The rollers are divided into active rollers 1 and passive rollers. The active rollers 1 are fixedly connected to the roller shaft, while the passive rollers are rotatably connected to the roller shaft. The number of passive rollers is not greater than the number of active rollers 1. The active and passive rollers 1 are spaced apart, and the sprocket 5 is fixed to the roller shaft of the active roller 1. With this arrangement, only the active roller 1 is driven by the motor 4, while the passive rollers rotate freely on the roller shaft based on the friction of the conveyed hose.

[0041] like Figure 1 As shown, in order to avoid interference with the sprocket 5 of the motor 4, the length of the yield driven roller 13 close to the sprocket 5 of the motor 4 is slightly shorter than that of the other driven rollers 12, and an adaptive roller shaft fixing bracket is provided here.

[0042] In this embodiment, in order to improve the transmission efficiency and transmission effect of the chain, the number of sprockets 5 on the roller shaft of the active roller 1 is two, and the sprockets 5 of the active roller 1 are connected in a relay-type transmission manner through multiple first chains 17 and second two chains 18. Figure 3 、 Figure 4 As shown. A protective cover 9 is provided on the outer side of the sprocket 5 and chain on the roller shaft of the active roller 1. The number of hose assembly conveyor roller units is 12, each 18 meters long. A single roller set has a load capacity of 80 tons, and the total length of the hose assembly conveyor roller is 150 meters.

[0043] The air tightness testing device includes a blind flange with a freshwater inlet and a pressure inlet port that fits the port of the oil hose, as well as a freshwater inlet pipeline, a booster pump, a pump pressure fixture, and a vacuum pressure gauge. During the air tightness test, one end of the assembled oil hose is sealed with the blind flange, and the other end is sealed with a blind flange with freshwater inlet and pressure inlet ports. After filling the freshwater inlet with water, the valve of the freshwater inlet is closed. The pump pressure fixture and vacuum pressure gauge are installed on the pressure inlet. The booster pump is used to pressurize the interior of the floating oil hose with fresh water. When the pressure reaches 21 kg, the valve on the pump pressure fixture is closed. A pressure inspector then performs a leak check on the hose flange. If the internal pressure of the floating oil hose remains unchanged for 30 minutes, the pump pressure test has passed.

[0044] The diameter of the floating oil hose is φ1500mm, and the hardness is relatively high. The mobile launching transfer platform at the end of the hose assembly conveyor roller increases the turning radius of the hose and avoids damage due to the large drop during the launching process. Figure 4 As shown, the mobile launching transfer platform includes a horizontal extension part 19, a stepped support frame, and a pulley set arranged on the upper surface of the horizontal extension part 19 and at the protruding corners of the steps. The mobile launching transfer platform is mobile and is only used when the hose is launched to ensure the normal use of the shipyard dock; when the assembled hose needs to be launched, it is moved and fixed to the edge of the dock. The horizontal extension part 19 is docked with the hose assembly conveyor roller, and the stepped support frame extends from the end of the dock to the river surface, and the step drop ensures that the turning radius of the hose is not less than 3.5 meters. The stepped support frame of the mobile launching transfer platform is welded by square steel 21, and the recessed corners of the steps are reinforced by corner connectors 20. As shown Figure 6 、 Figure 7 As shown, the hose is put into water at 4.5-meter tide level and 0-meter tide level respectively.

[0045] The method for installing a floating oil hose on water based on the floating oil hose assembly and transfer platform includes the following steps:

[0046] (1) The splicing of multiple sections of oil hose is completed on a hose assembly conveyor roller on land; the oil hose units to be assembled are placed on two of the hose assembly conveyor roller units respectively, and the motors 4 of the two hose assembly conveyor roller units are used to drive the rollers to rotate to move the two sections of oil hose units to be spliced ​​so that the two sections are close to each other and docked.

[0047] (2) Use an air tightness test device to seal the ends of the spliced ​​oil hose, add water and pressurize the inside of the spliced ​​oil hose, and perform an air tightness test. During the air tightness test, seal the other end of the oil hose with a blind flange equipped with a fresh water injection port and a pressure injection port. After filling the fresh water injection port with water, close the valve of the fresh water injection port, install a pump pressure tool and a vacuum pressure gauge on the pressure injection port, and use a booster pump to pressurize the inside of the floating oil hose with fresh water. When the pressure reaches 21 kg, close the valve on the pump pressure tool, and arrange a pressure inspector to check the hose flange for leakage. If the internal pressure of the floating oil hose remains unchanged for 30 minutes, the pump pressure test is qualified. After the air tightness test is completed, drain the water in the hose, seal both ends, and then proceed to step (3).

[0048] (3) The spliced ​​oil hose that has passed the air tightness test is transferred to the water via a mobile launching transfer platform, and both ends of the hose are fixed to the side of a tugboat. The two tugboats then drag the assembled oil hose to the side of the tanker.

[0049] The process for transferring the assembled oil hose into the water via the mobile launching platform is as follows: Motor 4 of the hose assembly conveyor is activated at a conveying speed of 8 m / min. The assembled hose is moved toward the water surface. The front end of the assembled hose passes through the mobile launching platform, lowers, and slowly slides into the water in an arc.

[0050] (4) The end of the hose is hoisted to the crude oil unloading winch of the tanker by a crane for port installation. After installation, the crane is withdrawn, and the crude oil unloading winch is started to recover the remaining hose in the water onto the winch. The tugboat is withdrawn and the construction is completed.

[0051] The embodiments described are preferred implementations of the present invention, but the present invention is not limited to the above implementations. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essence of the present invention are within the scope of protection of the present invention.

Claims

1. A floating oil hose assembly and transfer platform, characterized in that: The system comprises a hose assembly conveyor roller conveyor composed of a plurality of hose assembly conveyor roller conveyor units connected end to end and arranged in sequence along the hose assembly direction, an air tightness testing device for testing the air tightness of the assembled hose, and a mobile launching transfer platform that can be moved to the tail of the hose assembly conveyor roller conveyor and placed at the end of the dock; The hose assembly conveying roller table unit includes a roller table chassis, rollers mounted on the roller table chassis, a motor, a sprocket mounted on the roller shaft and the motor output shaft, and a chain matched with the sprocket; The air tightness test device includes a blind flange with a fresh water injection port and a pressure injection port that can be matched with the oil hose port, as well as a fresh water injection pipeline, a booster pump, a pump pressure tooling and a vacuum pressure gauge; The movable launching transfer platform comprises a horizontal extension portion, a stepped support frame, and a pulley block arranged on the upper surface of the horizontal extension portion and at the protruding corners of the step.

2. The floating oil hose assembly and transfer platform according to claim 1, characterized in that: The number of the hose assembly conveying roller units is 12, each of which is 18 meters long, and a single set of rollers can bear a load of 80 tons.

3. The floating oil hose assembly and transfer platform according to claim 1, characterized in that: The rollers are divided into active rollers and passive rollers, and the number of passive rollers is not greater than that of active rollers, and the active rollers and passive rollers are arranged at intervals; the active rollers are fixedly connected to the roller shaft, and the passive rollers are rotatably connected to the roller shaft; the sprocket is fixed on the roller shaft of the active roller.

4. The floating oil hose assembly and transfer platform according to claim 3, characterized in that: The number of sprockets on the roller shaft of the active roller is 2, and the sprockets of the active roller are connected in a relay transmission manner in pairs through multiple chains.

5. The floating oil hose assembly and transfer platform according to claim 1, characterized in that: The step height of the stepped support frame of the mobile launching transfer platform ensures that the turning radius of the hose is not less than 3.5 meters.

6. The floating oil hose assembly and transfer platform according to claim 1, characterized in that: The motor output shaft is connected to the reducer, the reducer output shaft is connected to the long shaft through a coupling, and the sprocket driven by the motor is fixed on the long shaft; the stepped support frame of the mobile launching transfer platform is welded by square steel, and the recessed corners of the steps are reinforced by corner connectors.

7. A method for integrally installing a floating oil hose on water based on the floating oil hose assembly and transfer platform according to any one of claims 1 to 6, characterized in that: The following steps are involved: (1) Complete the splicing of multiple sections of oil hose on the hose assembly conveyor roller on land; (2) Use the air tightness test device to seal the ends of the spliced ​​oil hose, add water and pressurize the inside of the spliced ​​oil hose to perform an air tightness test; (3) The spliced ​​oil hose that has passed the air tightness test is transferred to the water via a mobile launching transfer platform, and both ends of the hose are fixed to the side of a tugboat. The two tugboats then tow the assembled oil hose to the side of the tanker; (4) Use a crane to lift the end of the hose to the crude oil unloading winch of the tanker for port installation. After installation, the crane is withdrawn and the crude oil unloading winch is started to recover the remaining hose in the water onto the winch.

8. The method for integrally installing a floating oil hose on water according to claim 7, characterized in that: In the step (1), the oil hose units to be assembled are placed on the two hose assembly conveying roller units respectively, and the motors of the two hose assembly conveying roller units are used to drive the rollers to rotate to move the two sections of the oil hose units to be spliced ​​so that the two sections are close to each other and docked.

9. The method for integrally installing a floating oil hose on water according to claim 7, characterized in that: During the air tightness test in step (2), the other end of the oil hose is sealed by a blind flange equipped with a fresh water injection port and a pressure injection port. After the fresh water injection port is filled with water, the valve of the fresh water injection port is closed, and a pump pressure fixture and a vacuum pressure gauge are installed on the pressure injection port. The inside of the floating oil hose is pressurized with fresh water using a booster pump. When the pressure reaches 21 kg, the valve on the pump pressure fixture is closed, and a pressure inspector is arranged to check the hose flange for leakage. If the internal pressure of the floating oil hose remains unchanged for 30 minutes, the pump pressure test is qualified.

10. The method for integrally installing a floating oil hose on water according to claim 7, characterized in that: After the air tightness test in step (2) is completed, the water in the hose is drained and both ends are sealed before proceeding to step (3); in step (3), the process of transferring the spliced ​​oil hose into the water via the mobile launching transfer platform is as follows: starting the motor of the hose assembly conveyor roller, moving the assembled hose toward the water surface, and the front end of the assembled hose is lowered through the mobile launching transfer platform and slowly slides into the water in an arc shape.

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