Floating oil delivery hose assembling and switching platform and overwater integral mounting method

Abstract

The invention provides a floating oil delivery hose assembling and switching platform and an overwater integral mounting method, and relates to the technical field of ship engineering. The floating type oil conveying hose assembling and switching platform comprises a hose assembling and conveying roller way, an air tightness testing device and a movable type launching switching platform. The method comprises the steps that firstly, splicing of multiple sections of oil conveying hoses is completed on a hose assembling and conveying roller way located on the land; performing an air tightness test by using the air tightness test device; and then the spliced oil delivery hose is transferred into water through the movable launching transfer platform and dragged to an oil tanker through a dragging wheel, and the end of the hose is hoisted to a crude oil unloading winch of the oil tanker through a crane for port installation. Assembling of the floating oil delivery hose is preposed, the construction process is convenient and fast, the airtight test passing rate is increased, the construction safety and reliability are high, and the construction cost is greatly saved.

Description

Technical Field

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

[0002] Floating production storage and offloading vessels (FPSO) are large-scale offshore oil production bases that integrate offshore crude oil extraction, storage, processing and transportation. The crude oil unloading winch and the supporting floating oil hose equipped on such ships are their core equipment. During the crude oil unloading engineering operation of the FPSO project, the two ends of the floating oil hose are connected to the FPSO oil unloading unit equipment and the crude oil transport cargo ship respectively. The main function is to transfer the crude oil on the FPSO project to the transport ship through this hose and then transport it to the crude oil receiving site. The diameter of the floating oil hose is about φ1500mm, and each set consists of about 20 short pipes, and a single short pipe weighs about 5 tons. The floating oil hose arrives in loose parts. Its installation usually requires that after the commissioning of the crude oil unloading winch is completed, the 20 short pipes are assembled on the equipment one by one, and then the hose is placed in the water again for air tightness test and completion inspection to ensure that there will be no leakage accidents during the transportation of crude oil and thus pollute the ocean.

[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 airtightness testing on water is high. A new, efficient and safe installation technology solution is urgently needed. Summary of the invention

[0004] In view of the shortcomings in the prior art, 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 tested for air tightness 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 in that it comprises a hose assembly transfer roller table composed of a plurality of hose assembly transfer roller table units connected end to end and arranged in sequence along the hose assembly direction, an air tightness test 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 transfer roller table and placed at the end of the dock; The hose assembly conveying roller table unit comprises 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 delivery hose port, as well as a fresh water injection pipeline, a booster pump, a pump pressure tooling and a vacuum pressure gauge; The mobile launching transfer platform comprises a horizontal extension part, a stepped support frame, and a pulley block arranged on the upper surface of the horizontal extension part and at the protruding corners of the step.

[0007] 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 has a load-bearing capacity of 80 tons.

[0008] 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.

[0009] 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 pairs in a relay transmission through multiple chains.

[0010] 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.

[0011] 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.

[0012] 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: (1) Splicing multiple sections of oil hoses on a hose assembly conveyor roller on land; (2) Use an air tightness test device to seal the ends of the spliced ​​oil delivery hose, add water and pressurize the inside of the spliced ​​oil delivery hose to perform an air tightness test; (3) The spliced ​​oil hose that has passed the air tightness test is transferred into 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) 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 removed and the crude oil unloading winch is started to recover the remaining hose in the water onto the winch.

[0013] Furthermore, in the 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 rotated 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.

[0014] 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.

[0015] 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 conveying 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.

[0016] Furthermore, before step (3), the spliced ​​oil hose is wrapped with a protective film and then transferred into the water; in step (4), after the oil hose is connected to the crude oil unloading winch port, the protective film is removed.

[0017] Compared with the prior art solutions, the present invention has the following beneficial effects: 1. Pre-positioning of the construction phase. The original plan required that the hose be installed only after the crude oil unloading winch was debugged and had production functions. The construction window was limited and the production cycle was difficult to adjust. The floating oil hose water integrated installation method described in the present invention can avoid the debugging progress of the crude oil unloading winch, assemble the floating oil hose short pipes that arrive in bulk in advance, select the installation time according to the equipment debugging progress, and the construction phase can be flexibly selected.

[0018] 2. Convenient construction process: The floating oil hose water integrated installation method of the present invention can ensure that the floating oil hose is assembled on the ground, improving the construction environment and construction difficulty of the process of lifting and connecting the hose units one by one. After the assembly is completed, the whole can be launched into the water for installation, reducing the steps of high-altitude assembly on the ship site in the original plan.

[0019] 3. Improve the passing rate of airtight test. The present invention performs airtight test on the hose on the ground. The test is not affected by thermal expansion and contraction caused by changes in seawater temperature, improves the test environment, stabilizes the pressure, and increases the test efficiency.

[0020] 4. High safety and reliability in construction. Through technical innovation, the floating oil hose overall installation method of the present invention reduces the water and high-altitude construction time by 60% compared with the original solution, reduces engineering risks and hidden dangers, and improves safety.

[0021] 5. Save construction costs, greatly reduce construction hours and the occupancy of various auxiliary equipment and facilities. It is estimated that the cost can be saved by about 480,000 yuan. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the partial structure of the hose assembly conveying roller.

[0023] Figure 2 for Figure 1 AA section view.

[0024] Figure 3 for Figure 1 Mid-CC section view.

[0025] Figure 4 A schematic diagram of the chain transmission mechanism of the hose assembly conveying roller unit.

[0026] Figure 5 This is a structural schematic diagram of a mobile launching transfer platform.

[0027] Figure 6 This is a schematic diagram of the hose launching status at a tide level of 4.5 meters.

[0028] Figure 7 This is a schematic diagram of the hose launching status at 0-meter tide level.

[0029] 1-driving roller, 2-roller frame, 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

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0031] The floating oil hose assembly and transfer platform of the present invention comprises a hose assembly conveyor roller table composed of a plurality of hose assembly conveyor roller table units connected end to end and arranged in sequence along the hose assembly direction, an air tightness test device for testing the air tightness of the hose after assembly, and a mobile launching and transfer platform that can be moved to the tail of the hose assembly conveyor roller table and placed at the end of the dock. The floating oil hose assembly and transfer platform can meet the needs of assembling several sections of hose into a whole, adding water and pressurizing the inside of the hose after assembly, completing the air tightness test, and transferring the assembled hose into the water. Ground operations are convenient and fast, and construction safety is guaranteed.

[0032] 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, and the power is transmitted 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, and 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 through a key 6, as shown in FIG. Figure 2 As shown. The sprocket 5 and the reducer 14 are limited by the first retaining ring 11 and the second retaining ring 16 respectively. The rollers are divided into an active roller 1 and a driven roller. The active roller 1 is fixedly connected to the roller shaft, and the driven roller is rotatably connected to the roller shaft. The number of driven rollers is not greater than the number of active rollers 1. The active roller 1 and the driven roller are arranged at intervals, and the sprocket 5 is fixed on the roller shaft of the active roller 1. In this arrangement, only the active roller 1 is driven by the motor 4, and the driven roller rotates freely on the roller shaft according to the friction force of the transmitted hose.

[0033] like Figure 1 As shown, in order to avoid interference with the sprocket 5 of the motor 4, the length of the yielding driven roller 13 close to the sprocket 5 of the motor 4 is slightly shorter than that of other driven rollers 12, and an adaptive roller shaft fixing bracket is provided here.

[0034] 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 by a plurality of first chains 17 and second two chains 18. Figure 3 , Figure 4 As shown. A protective cover 9 is provided on the sprocket 5 and the outer side of the chain on the roller shaft of the active roller 1. The number of the hose assembly conveying roller units is 12, each of which is 18 meters long, a single roller bearing is 80 tons, and the total length of the hose assembly conveying roller is 150 meters.

[0035] 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 port of the oil hose, as well as a fresh water injection pipeline, a booster pump, a pump pressure tool and a vacuum pressure gauge. When performing the air tightness test, one end of the assembled oil hose is sealed with a blind flange, and the other end is sealed with a blind flange 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 the pump pressure tool and the vacuum pressure gauge on the pressure injection port, use the booster pump to pressurize the inside of the floating oil hose with fresh water, and when the pressure reaches 21 kilograms, close the valve on the pump pressure tool, and the pressure inspector will 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.

[0036] 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 table increases the turning radius of the hose and avoids damage to the hose due to the large drop during the launching process. Figure 4 As shown, the mobile launching transfer platform includes a horizontal extension portion 19, a stepped support frame, and a pulley block arranged on the upper surface of the horizontal extension portion 19 and at the protruding corners of the step. 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 portion 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 height difference 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 step 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.

[0037] The method for installing a floating oil hose on water based on the floating oil hose assembly and transfer platform comprises the following steps: (1) The plurality of sections of oil hose are spliced ​​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, so as to move the two sections of the oil hose units to be spliced ​​so as to bring the two sections close to each other and dock with each other.

[0038] (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 through 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).

[0039] (3) The spliced ​​oil hose that has passed the air tightness test is transferred into 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.

[0040] The process of transferring the spliced ​​oil delivery hose to the water via the mobile launching transfer platform is as follows: start the motor 4 of the hose assembly conveying roller, and the conveying speed of the motor 4 is 8m / min. Move 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.

[0041] (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, the crude oil unloading winch is started to recover the remaining hose in the water to the winch, and the tugboat is withdrawn, and the construction is completed.

[0042] The embodiments are preferred implementations of the present invention, but the present invention is not limited to the above-mentioned implementations. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention belong to the protection scope of the present invention.

Claims

1. A floating oil hose assembly and transfer platform, characterized in that: It includes a hose assembly conveyor roller table composed of a plurality of hose assembly conveyor roller table 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 table and placed at the end of the dock; The hose assembly conveying roller table unit comprises 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 delivery hose port, as well as a fresh water injection pipeline, a booster pump, a pump pressure tooling and a vacuum pressure gauge; The mobile launching transfer platform comprises a horizontal extension part, a stepped support frame, and a pulley block arranged on the upper surface of the horizontal extension part and at the protruding corners of the step.

2. The floating oil hose assembly and transfer platform according to claim 1 is 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 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 shafts, and the driven rollers are rotatably connected to the roller shafts; the sprockets are fixed on the roller shafts of the active rollers.

4. The floating oil hose assembly and transfer platform according to claim 1, 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 installing a floating oil hose on water based on a 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) Splicing multiple sections of oil hoses on a hose assembly conveyor roller on land; (2) Use an air tightness test device to seal the ends of the spliced ​​oil delivery hose, add water and pressurize the inside of the spliced ​​oil delivery hose to perform an air tightness test; (3) The spliced ​​oil hose that has passed the air tightness test is transferred into 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) 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 removed 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 two of the hose assembly conveying roller units respectively, and the motor-driven rollers of the two hose assembly conveying roller units are rotated 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 conveying 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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