An underwater installation device for an FPSO external transmission cable connecting female connector and its use method

Abstract

An underwater installation device for connecting a female connector for an FPSO external transmission cable and a method for using the device, the device comprising: a support portion for supporting the female connector; an upper hoisting portion for installing an upper pull-up rigging; an inner limit portion for limiting the internal position of the female connector; a first end of the inner limit portion being connected to the support portion and a second end being connected to the upper hoisting portion; an outer limit portion for limiting the external position of the female connector; the outer limit portion being disposed on the top surface of the support portion; a pull-down portion for installing a pull-down rigging; the pull-down portion being disposed on the bottom surface of the support portion. The present application provides an underwater installation device for connecting a female connector for an FPSO external transmission cable and a method for using the device, which makes the entire underwater installation operation of the female connector at sea simpler, safer, and with controllable risks.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore floating production devices, and in particular to an underwater installation device for an FPSO external transmission cable connecting female connector and a method for using the device. Background Art

[0002] In the past, the transmission cables of offshore floating production units (FPSOs) in the South China Sea (such as the Haiyang Shiyou 118) were directly connected to the single-point bottom flange using bend limiters, rather than the separate male and female connectors installed as with the Haiyang Shiyou 119. However, cable manufacturers recommended using a float bag to transfer the female cable connector from the diving support vessel to the single-point bottom, then using slings such as a chain hoist and slings to pull the female cable connector upwards to achieve flange docking. This simple and straightforward installation method was difficult to perform at sea. First, the female cable connector weighed one ton, making it difficult for divers to move underwater. Second, strong ocean currents created significant resistance to underwater transmission, making the process very risky.

[0003] It can be seen that the prior art has at least the following defects: the method of using a floating bag to install the cable female connector is difficult to operate at sea.

[0004] Therefore, it is necessary to provide a technical means to solve the above defects. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide an underwater installation device for an FPSO external transmission cable female connector and a method for using the device to solve the problem that the method of using a floating bag to install the cable female connector in the prior art is difficult to operate at sea.

[0006] The present invention is implemented as follows: a method for using an underwater installation device for an FPSO external transmission cable connector, the method comprising the steps of:

[0007] Install the female connector on the support;

[0008] Connect the upper rigging to the upper lifting part;

[0009] Connect the pull-down rigging to the pull-down section;

[0010] Adjusting the upper pull rigging and the lower pull rigging to allow the female head to enter the underwater environment;

[0011] Adjusting the upper pull rigging and the lower pull rigging to move the female connector closer to the cable connector;

[0012] The female connector is docked and installed with the cable connector.

[0013] Preferably, the step of installing the female connector on the support portion comprises the following steps:

[0014] Adjust the position of the female connector so that its interior is tightly pressed against the inner limiting portion on the support portion.

[0015] Preferably, the step of installing the female connector on the support portion further comprises the following steps:

[0016] Adjust the position of the female connector so that its outer portion is tightly pressed against the outer limiting portion on the support portion.

[0017] Preferably, the connecting of the upper pulling rigging to the upper hoisting portion comprises the steps of:

[0018] Connect the upper pulling rigging to the upper lifting ring in the upper lifting part.

[0019] Preferably, said connecting the pull-down rigging to the pull-down portion comprises the steps of:

[0020] Connect the pull-down sling to the pull-down ring.

[0021] The present invention also provides an underwater installation device for an FPSO external transmission cable female connector, comprising:

[0022] A supporting portion, used for supporting the female connector;

[0023] Upper hoisting part, used for installing upper pulling rigging;

[0024] An inner limiting portion, used to limit the inner position of the female connector; a first end of the inner limiting portion is connected to the supporting portion and a second end is connected to the upper hanging portion;

[0025] An external limiting portion, used to limit the external position of the female head; the external limiting portion is provided on the top surface of the supporting portion;

[0026] The pull-down portion is used for installing the pull-down rigging; the pull-down portion is arranged on the bottom surface of the support portion.

[0027] Preferably, the supporting portion is a circular ring piece, the first end of the inner limiting portion is connected to the inner circular edge of the circular ring piece, the outer limiting portion is arranged at the outer circular edge of the top surface of the circular ring piece, and the pull-down portion is arranged at the outer circular edge of the bottom surface of the circular ring piece.

[0028] Preferably, the upper hanging portion comprises: a disc and an upper hanging ring, wherein the second end of the inner limiting portion is connected to the bottom surface of the disc, and the upper hanging ring is arranged on the top surface of the disc.

[0029] Preferably, the inner limiting portion is a connecting rod, a first end of the connecting rod is connected to the top surface of the circular ring piece in the supporting portion and a second end of the connecting rod is connected to the bottom surface of the circular piece in the upper hanging portion.

[0030] Preferably, the outer limiting portion is a limiting plate, and the limiting plate is arranged on the top surface of the supporting portion.

[0031] The present application provides an underwater installation device for an FPSO external transmission cable connecting female head and a method for using the device, which makes the entire offshore underwater installation operation of the female head simpler, safer, and risk-controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of an underwater installation device for a female connector of an FPSO external transmission cable according to an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of an underwater installation device for an FPSO external transmission cable connecting female connector according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0036] See also Figure 1-2 In an embodiment of the present application, the present application provides an underwater installation device for an FPSO external transmission cable female connector, comprising:

[0037] Support portion 10, used to support the female connector;

[0038] The upper hoisting portion 20 is used to install the upper rigging;

[0039] The inner limiting portion 30 is used to limit the internal position of the female connector; the first end of the inner limiting portion 30 is connected to the support portion 10 and the second end is connected to the upper hanging portion 20;

[0040] The outer limiting portion 40 is used to limit the outer position of the female head; the outer limiting portion 40 is provided on the top surface of the support portion 10;

[0041] The pull-down portion 50 is used to install the pull-down rigging; the pull-down portion 50 is arranged on the bottom surface of the support portion 10.

[0042] When using this device to install the female connector underwater, first install the female connector on the support part 10, then adjust the position of the female connector so that its interior is pressed against the inner limit part 30 and its exterior is pressed against the outer limit part 40; then connect the upper pull rigging to the upper lifting part 20, and connect the lower pull rigging to the lower pull part 50; then adjust the upper pull rigging and the lower pull rigging to make the female connector enter the underwater environment, and then adjust the upper pull rigging and the lower pull rigging to make the female connector move close to the cable connector, and finally complete the docking installation of the female connector and the cable connector.

[0043] See also Figure 1-2 In the embodiment of the present application, the supporting portion 10 is a circular ring piece, the first end of the inner limiting portion 30 is connected to the inner circular edge of the circular ring piece, the outer limiting portion 40 is arranged at the outer circular edge of the top surface of the circular ring piece, and the pull-down portion 50 is arranged at the outer circular edge of the bottom surface of the circular ring piece.

[0044] In the embodiment of the present application, the support portion 10 is an annular ring with a bottom cross-sectional area greater than or equal to the bottom area of ​​the female connector. The bottom surface of the female connector is supported on the support portion 10. The inner portion of the female connector is tightly against the inner stopper 30, and the outer portion of the female connector is tightly against the outer stopper 40. The inner stopper 30 and the outer stopper 40 jointly restrict the movement of the female connector, maintaining its stability on the support portion 10.

[0045] See also Figure 1-2 In an embodiment of the present application, the upper hanging portion 20 includes: a disc 21 and an upper hanging ring 22, wherein the second end of the inner limiting portion 30 is connected to the bottom surface of the disc 21, and the upper hanging ring 22 is arranged on the top surface of the disc 21.

[0046] In the embodiment of the present application, the diameter of the disc 21 is in close contact with the inner wall of the female head, which can also play a role in limiting the female head and ensuring its stability in the horizontal direction. The upper hoisting ring 22 is used to fix the upper pulling rigging.

[0047] See also Figure 1-2 In the embodiment of the present application, the inner limit portion 30 is a connecting rod, the first end of which is connected to the top surface of the circular ring in the support portion 10 and the second end of which is connected to the bottom surface of the circular piece 21 in the upper hanging portion 20.

[0048] In the embodiment of the present application, there are multiple connecting rods, which are arranged in a ring shape on the annular sheet, and each connecting rod is tightly pressed against the inner wall of the female head.

[0049] See also Figure 1-2 In the embodiment of the present application, a lower reinforcing sheet 31 is provided between the first end of the connecting rod and the top surface of the annular sheet.

[0050] In the embodiment of the present application, the lower reinforcement sheet 31 can strengthen the connection between the connecting rod and the annular sheet.

[0051] See also Figure 1-2 In the embodiment of the present application, an upper reinforcing sheet 32 ​​is provided between the second end of the connecting rod and the bottom surface of the disc 21 .

[0052] In the embodiment of the present application, the upper reinforcement sheet 32 ​​can strengthen the connection between the connecting rod and the round sheet 21 .

[0053] See also Figure 1-2 In the embodiment of the present application, the outer limiting portion 40 is a limiting plate, and the limiting plate is arranged on the top surface of the supporting portion 10.

[0054] In the embodiment of the present application, there are multiple limiting plates, which are arranged in a ring shape on the circular ring plate, and each limiting plate is tightly pressed against the outer wall of the female head.

[0055] See also Figure 1-2 In the embodiment of the present application, the pull-down portion 50 is a pull-down ring, which is arranged on the bottom surface of the support portion 10 .

[0056] In an embodiment of the present application, there are multiple pull-down rings, which are arranged in a ring shape on the circular ring sheet, and each pull-down ring can be connected to the pull-down rigging as needed.

[0057] In an embodiment of the present application, the present application provides a method for using an underwater installation device for an FPSO external transmission cable connecting female head, wherein the underwater installation device for the FPSO external transmission cable connecting female head includes the above-mentioned underwater installation device for the FPSO external transmission cable connecting female head, and the method includes the steps of:

[0058] Install the female connector on the support 10;

[0059] Connect the upper rigging to the upper hoisting portion 20;

[0060] Connect the pull-down rigging to the pull-down portion 50;

[0061] Adjusting the upper pull rigging and the lower pull rigging to allow the female head to enter the underwater environment;

[0062] Adjusting the upper pull rigging and the lower pull rigging to move the female connector closer to the cable connector;

[0063] The female connector is docked and installed with the cable connector.

[0064] In the embodiment of the present application, the step of installing the female connector on the support portion 10 includes the following steps:

[0065] The position of the female connector is adjusted so that its interior is pressed tightly against the inner limiting portion 30 on the support portion 10 .

[0066] In the embodiment of the present application, the step of installing the female connector on the support portion 10 further includes the following steps:

[0067] The position of the female connector is adjusted so that its outer portion is pressed tightly against the outer limiting portion 40 on the support portion 10 .

[0068] In the embodiment of the present application, the connecting of the upper rigging to the upper hoisting portion 20 includes the following steps:

[0069] The upper pulling rigging is connected to the upper lifting ring in the upper lifting part 20.

[0070] In the embodiment of the present application, the step of connecting the pull-down rigging to the pull-down portion 50 includes the following steps:

[0071] Connect the pull-down sling to the pull-down ring.

[0072] The present application provides an underwater installation device for an FPSO external transmission cable connecting female head and a method for using the device, which makes the entire offshore underwater installation operation of the female head simpler, safer, and risk-controlled.

[0073] The above description is only a preferred embodiment of the present invention, and its structure is not limited to the shapes listed above. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for using an underwater installation device for an FPSO external transmission cable female connector, characterized in that: The method comprises the steps of: Install the female connector on the support; Connect the upper rigging to the upper lifting part; Connect the pull-down rigging to the pull-down section; Adjusting the upper pull rigging and the lower pull rigging to allow the female head to enter the underwater environment; Adjusting the upper pull rigging and the lower pull rigging to move the female connector closer to the cable connector; Connecting and installing the female connector to the cable connector; The step of installing the female connector on the support portion includes the following steps: Adjust the position of the female connector so that its interior is tightly against the inner limit portion on the support portion; Adjust the position of the female connector so that its outer portion is tightly pressed against the outer limiting portion on the support portion; The support portion is a circular ring, the cross-sectional area of ​​the bottom surface of the support portion is greater than or equal to the area of ​​the bottom surface of the female head, and the bottom surface of the female head is supported on the support portion; the interior of the female head is tightly pressed against the inner limiting portion, and the exterior of the female head is tightly pressed against the outer limiting portion. The inner limiting portion and the outer limiting portion jointly limit the movement of the female head to keep it stable on the support portion; The upper hanging portion includes a disc and an upper hanging ring, wherein the second end of the inner limit portion is connected to the bottom surface of the disc, and the upper hanging ring is provided on the top surface of the disc; the diameter of the disc is tightly pressed against the inner side wall of the female head to limit the female head and ensure its stability in the horizontal direction; The inner limiting portion is a connecting rod, the first end of the connecting rod is connected to the top surface of the circular ring piece in the support portion and the second end is connected to the bottom surface of the circular piece in the upper hanging portion; there are multiple connecting rods, and the multiple connecting rods are arranged in a ring on the circular piece, and each connecting rod is tightly pressed against the inner side wall of the female head; a lower reinforcing piece for strengthening the connection between the connecting rod and the circular piece is provided between the first end of the connecting rod and the top surface of the circular piece; an upper reinforcing piece for strengthening the connection between the connecting rod and the circular piece is provided between the second end of the connecting rod and the bottom surface of the circular piece.

2. The method for using the FPSO external transmission cable female connector underwater installation device according to claim 1, characterized in that: The connecting of the upper rigging to the upper hoisting portion comprises the following steps: Connect the upper pulling rigging to the upper lifting ring in the upper lifting part.

3. The method for using the FPSO external transmission cable female connector underwater installation device according to claim 1, characterized in that: The step of connecting the pull-down rigging to the pull-down portion comprises the following steps: Connect the pull-down sling to the pull-down ring.

4. An underwater installation device for a female connector of an FPSO external transmission cable, characterized in that: include: A supporting portion, used for supporting the female connector; Upper hoisting part, used for installing upper pulling rigging; An inner limiting portion, used to limit the inner position of the female connector; a first end of the inner limiting portion is connected to the supporting portion and a second end is connected to the upper hanging portion; An external limiting portion, used to limit the external position of the female head; the external limiting portion is provided on the top surface of the supporting portion; A pull-down portion, used for installing a pull-down rigging; the pull-down portion is provided on the bottom surface of the support portion; Wherein, the supporting portion is a circular ring piece, the first end of the inner limiting portion is connected to the inner circular edge of the circular ring piece, the outer limiting portion is arranged at the outer circular edge of the top surface of the circular ring piece, and the pull-down portion is arranged at the outer circular edge of the bottom surface of the circular ring piece; The cross-sectional area of ​​the bottom surface of the support portion is greater than or equal to the area of ​​the bottom surface of the female head, and the bottom surface of the female head is supported on the support portion; the interior of the female head is tightly pressed against the inner limiting portion, and the exterior of the female head is tightly pressed against the outer limiting portion. The inner limiting portion and the outer limiting portion jointly limit the movement of the female head to keep it stable on the support portion; The upper hanging portion includes a disc and an upper hanging ring, wherein the second end of the inner limit portion is connected to the bottom surface of the disc, and the upper hanging ring is provided on the top surface of the disc; the diameter of the disc is tightly pressed against the inner side wall of the female head to limit the female head and ensure its stability in the horizontal direction; The inner limiting portion is a connecting rod, the first end of the connecting rod is connected to the top surface of the circular ring piece in the support portion and the second end is connected to the bottom surface of the circular piece in the upper hanging portion; there are multiple connecting rods, and the multiple connecting rods are arranged in a ring on the circular piece, and each connecting rod is tightly pressed against the inner side wall of the female head; a lower reinforcing piece for strengthening the connection between the connecting rod and the circular piece is provided between the first end of the connecting rod and the top surface of the circular piece; an upper reinforcing piece for strengthening the connection between the connecting rod and the circular piece is provided between the second end of the connecting rod and the bottom surface of the circular piece.

5. The underwater installation device for the female connector of the FPSO external transmission cable according to claim 4 is characterized in that: The outer limiting portion is a limiting piece, and the limiting piece is arranged on the top surface of the supporting portion.

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