Shallow water ocean platform current measuring device and method of installation, maintenance and recovery thereof

Abstract

The application discloses a shallow water ocean platform sea current measuring device and a method for installing, maintaining and recovering the same. The shallow water ocean platform sea current measuring device comprises a bottom plate, a supporting plate, a sea current measuring sensor and an upper support. A guide column is arranged on the bottom plate, a mooring cable is connected to the guide column, the supporting plate is movably sleeved on the guide column and is adapted to move up and down along the guide column, a lifting cable is further connected to the supporting plate, the sea current measuring sensor is installed on the supporting plate, and the upper support is fixedly arranged on the shallow water platform and is adapted to be fixedly connected with the end of the mooring cable away from the bottom plate and the end of the lifting cable away from the supporting plate. Compared with the prior art, the application can realize economic and accurate measurement of the sea current of the shallow water ocean platform and meanwhile avoid sensor collection failure caused by sinking.

Description

Technical Field

[0001] This invention relates to the field of marine engineering technology, and in particular to a shallow-water marine platform current measurement device and its installation, maintenance and recovery methods. Background Technology

[0002] With the deepening development of shallow-sea resources in my country, a large number of offshore platforms need to operate in areas with muddy or sandy seabeds. Ocean currents are the primary environmental load faced by shallow-water offshore platforms, and accurate monitoring of ocean current information is crucial for ensuring their safe operation. Current monitoring methods generally involve either directly installing current measurement sensors on the platform or constructing large underwater fixed structures to install them. However, directly installing sensors on the platform is problematic due to the frequent transportation and installation required for shallow-water platforms, making direct fixation difficult. Conversely, constructing large underwater fixed structures for sensors is costly due to the short service life of the platform in the fixed area. Furthermore, as the platform's time in place increases, both the platform and the current sensors are prone to settling; if the sensors are covered by mud or sand, accurate current measurements will be impossible. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the prior art by providing a shallow-water marine platform current measurement device and its installation, maintenance, and recovery method, which enables economical and accurate measurement of currents on shallow-water marine platforms while avoiding sensor malfunctions caused by settling.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a shallow-water marine platform current measurement device, comprising: A base plate, on which guide posts are provided, and mooring cables are connected to the guide posts; A pallet is movably mounted on the guide post and is adapted to move up and down along the guide post. A lifting cable is also connected to the pallet. Ocean current measurement sensor, wherein the ocean current measurement sensor is mounted on the tray; The upper support is fixedly mounted on a shallow water platform and is adapted to be fixedly connected to the end of the mooring cable away from the bottom plate and the end of the lifting cable away from the support plate.

[0005] Preferably, there are two guide posts, which are arranged opposite to each other on the left and right sides of the base plate.

[0006] Preferably, there are two lifting cables, which are arranged opposite to each other on the left and right sides of the support plate.

[0007] Preferably, the lifting cable is provided with a scale.

[0008] Preferably, the tray is also provided with a data cable guide hole.

[0009] Preferably, the upper support is L-shaped, and has several fixing holes corresponding to the mooring cable and the lifting cable. The upper support also has a data cable lead hole.

[0010] Preferably, the upper support is further provided with supporting ribs on both sides.

[0011] In a second aspect, the present invention provides a method for installing a shallow-water marine platform current measuring device as described in the first aspect above, comprising the following steps: The upper support is installed on the deck of the shallow water platform; The pallet is slidably mounted on the guide post on the base plate, and the mooring cable and the lifting cable are respectively connected to the guide post and the pallet; The ocean current measurement sensor is mounted on the tray; The mooring cable is connected to the platform crane at the end away from the bottom plate, and the platform crane is used to lower the assembled bottom plate, the support plate and the ocean current measurement sensor to the seabed. After being lowered into place, the mooring cable is detached from the platform crane. The end of the mooring cable away from the bottom plate and the end of the lifting cable away from the support plate are respectively fixed and tied to the upper support to keep the mooring cable and the lifting cable in a taut state. The data line of the ocean current measurement sensor is led up to the platform and connected to the monitoring device.

[0012] Thirdly, the present invention provides a method for maintaining a current measuring device for a shallow-water marine platform as described in the first aspect above, comprising the following steps: Check that the mooring cable and the lifting cable are in a taut state; If the condition is normal, disconnect the lifting cable from the upper support. The lifting cable is connected to a platform crane or other lifting device, and the platform crane or other lifting device is used to lift the pallet and the data cable of the ocean current measurement sensor to the platform for maintenance; After maintenance, the pallet is lowered using a platform crane or other lifting device. If there is no data before maintenance and the ocean current measurement sensor and circuit are normal after retrieval, it indicates that the ocean current measurement sensor is covered by mud or sand. In this case, the lowering depth of the pallet is reduced. If the data is normal before maintenance, the pallet is lowered to the initial position according to the initial lowering depth. The lifting cable is fixedly tied to the upper support to complete the device maintenance.

[0013] Fourthly, the present invention provides a method for recovering a shallow-water marine platform current measuring device as described in the first aspect above, comprising the following steps: Check that the mooring cable and the lifting cable are in a taut state; If the condition is normal, disconnect the lifting cable from the upper support. The lifting cable is connected to a platform crane or other lifting device, and the platform crane or other lifting device is used to lift the pallet and the data cable of the ocean current measurement sensor to the platform for retrieval. Determine whether the bottom plate has sunk to a deeper position in the seabed mud or sand layer. If the bottom plate has sunk to a deeper position in the seabed mud or sand layer, disconnect the mooring cable and abandon the bottom plate directly. If the bottom plate has not sunk or has only sunk to a shallower position in the seabed mud or sand layer, detach the mooring cable from the upper support and connect it to the platform crane. Use the platform crane to lift the bottom plate to the platform for recovery.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The structure adopted in this invention can achieve rapid installation and recovery, saving development costs. At the same time, the sensor recovery method is simple, which can ensure the regular maintenance requirements of the sensor, reduce the workload of underwater personnel, thereby further reducing monitoring costs and improving the economic efficiency of ocean current measurement on shallow water platforms. (2) The present invention uses a bottom plate to slow down the settling speed. At the same time, the guide column and the support plate work together to enable the ocean current measurement sensor to have attitude adjustment capability. When the sensor is covered by mud or sand due to the settling of the marine platform or measurement device, the sensor can be lifted above the mud or sand surface by lifting the support plate to ensure that the sensor can operate normally and avoid the sensor from malfunctioning due to the settling of the marine platform or measurement device. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. It should be noted that in all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0016] Figure 1 This is a schematic diagram of the overall underwater structure of the shallow water marine platform current measurement device described in this embodiment of the invention; Figure 2 This is a schematic diagram of the overall structure of the upper support of the shallow water marine platform current measurement device described in this embodiment of the invention; Figure 3This is a schematic diagram of an improved ocean current measurement sensor according to an embodiment of the present invention.

[0017] In the diagram: 1-Bottom plate; 11-Guide post; 12-Mooring cable; 2-Support plate; 21-Lifting cable; 22-Data cable guide hole; 3-Ocean current measurement sensor; 4-Upper bracket; 41-Fixing hole; 42-Data cable lead hole; 43-Support rib; 5-Shallow water platform. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0019] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the system or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the use of terms such as "first" and "second" to define components is merely for the convenience of distinguishing the aforementioned components. Unless otherwise stated, these terms have no special meaning and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In existing technologies, ocean current monitoring in the vicinity of offshore platforms is generally conducted by directly installing ocean current measurement sensors on the platform or by constructing large underwater fixed structures to install ocean current monitoring sensors. However, the method of directly installing ocean current measurement sensors on the platform is problematic because shallow-water offshore platforms involve frequent transportation and installation, making it difficult to directly fix the sensors to the platform. The method of constructing large underwater fixed structures to install ocean current monitoring sensors suffers from high economic costs due to the short service life of the platform in the fixed area. Furthermore, as the platform's time in place increases, both the offshore platform and the ocean current sensors are prone to settling. If the sensors are covered by mud or sand, accurate ocean current measurements will be impossible. Therefore, this invention provides an ocean current measurement device for shallow-water offshore platforms and its installation, maintenance, and retrieval methods, which enables economical and accurate measurement of ocean currents in shallow-water offshore platforms while avoiding sensor failure caused by settling.

[0022] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0023] Example 1 like Figures 1-3 As shown, Embodiment 1 of the present invention provides a shallow-water marine platform current measurement device, comprising: A base plate 1 is provided with a guide post 11, and a mooring cable 12 is connected to the guide post 11. The pallet 2 is movably mounted on the guide column 11. The pallet 2 is suitable for moving up and down along the guide column 11. The pallet 2 is also connected to a lifting cable 21, which can be used to lift or lower the pallet 2. Ocean current measurement sensor 3 is mounted on tray 2; The upper support 4 is fixedly installed on the shallow water platform 5. The upper support 4 is adapted to be fixedly connected to the end of the mooring cable 12 away from the bottom plate 1 and the end of the lifting cable 21 away from the support plate 2.

[0024] In this embodiment, installation and deployment can be carried out via a crane connected to the offshore platform, without causing structural impact on other facilities. After the platform completes its operations, the entire device and / or the current measurement sensor 3 can be recovered via lifting mooring cable 12 and / or lifting cable 21. Therefore, the structural form adopted in this embodiment enables rapid installation and recovery, saving development costs. At the same time, the sensor recovery method is simple, ensuring the regular maintenance requirements of the sensor, reducing the workload of underwater personnel, thereby further reducing monitoring costs and improving the economics of current measurement on shallow-water offshore platforms.

[0025] In addition, this embodiment uses a base plate 1 to slow down the settling speed. At the same time, the guide column 11 and the support plate 2 work together to enable the current measurement sensor 3 to have attitude adjustment capability. When the sensor is covered by mud or sand due to the settling of the marine platform or measurement device, the sensor can be lifted above the mud or sand surface by lifting the support plate 2 to ensure that the sensor can operate normally and avoid sensor failure due to the settling of the marine platform or measurement device.

[0026] Preferably, the base plate 1 in this embodiment can be a rectangular or other shaped steel plate. The base plate 1 can support the ocean current monitoring sensor and other components while slowing down the sinking speed of the ocean current measuring device.

[0027] Specifically, in this embodiment, there are two guide posts 11, which are arranged opposite to each other on the left and right sides of the base plate 1. The guide posts 11 can be cylindrical or other shaped components, and can limit and guide the pallet 2 when it is lifted or lowered.

[0028] It is understood that the number of guide posts 11 in this invention is not limited to two. In some other specific embodiments, the number of guide posts 11 can be adjusted according to actual needs, for example, it can be one, three, four or five.

[0029] Preferably, in this embodiment, there are two lifting cables 21, which are arranged opposite to each other on the left and right sides of the support plate 2.

[0030] Of course, in other embodiments of the present invention, the number of lifting cables 21 is not limited to two, and can be set according to the size and shape of the tray 2, for example, one, three, four or five.

[0031] Furthermore, the lifting cable 21 is provided with graduations. In this embodiment, when lowering the pallet 2, the distance between the pallet 2 and the platform deck can be determined according to the graduations on the lifting cable 21, thereby controlling the lowering depth of the pallet 2.

[0032] Furthermore, the support plate 2 is also provided with a data cable guide hole 22. The data cable guide hole 22 can fix the data cable leading out of the sensor and prevent the data cable from breaking off from the sensor due to factors such as water flow during measurement or lifting.

[0033] like Figure 2 As shown, in some optional embodiments, the upper support 4 is generally L-shaped, and the upper support 4 has a plurality of fixing holes 41 corresponding to the mooring cable 12 and the lifting cable 21. The upper support 4 also has a data cable lead hole 42.

[0034] Among them, several fixing holes 41 are used to tie and fix the mooring cable 12 away from the bottom plate 1 and the lifting cable 21 away from the support plate 2, respectively, and the data line lead hole 42 is used to lead the data line of the ocean current measurement sensor 3 to the platform.

[0035] Furthermore, support ribs 43 are provided on both sides of the upper support 4, which can provide the overall strength of the upper support 4.

[0036] Of course, the upper support 4 of the present invention is not limited to any particular structural form. In other embodiments, the upper support 4 may also adopt other structural forms. For example, in other specific embodiments of the present invention, the upper support 4 may also adopt a frame structure and fix the mooring cable 12 and the lifting cable 21 by setting corresponding fixing rods on the frame structure.

[0037] Example 2 This second embodiment provides an installation method for a shallow-water marine platform current measurement device as described in embodiment one, including the following steps: S1. Install the upper support 4 onto the deck of the shallow water platform 5; S2. Slide the pallet 2 onto the guide post 11 on the base plate 1, and connect the mooring cable 12 and the lifting cable 21 to the guide post 11 and the pallet 2 respectively; S3. Install the ocean current measurement sensor 3 on the tray 2, and pass the data cable of the ocean current sensor through the data cable guide hole 22; S4. Connect the end of the mooring cable 12 away from the bottom plate 1 to the platform crane, and use the platform crane to lower the assembled bottom plate 1, support plate 2 and ocean current measurement sensor 3 to the seabed. S5. After lowering the cable into place, detach the mooring cable 12 from the platform crane, and fix the end of the mooring cable 12 away from the bottom plate 1 and the end of the lifting cable 21 away from the support plate 2 to the upper support 4 respectively so that the mooring cable 12 and the lifting cable 21 are in a taut state. Lead the data line of the ocean current measurement sensor 3 to the platform and connect it to the monitoring device, and record the scale at the connection between the lifting cable 21 and the upper support 4.

[0038] Example 3 This embodiment three provides a maintenance method for the ocean current measurement device of a shallow water marine platform as described in embodiment one, including the following steps: S1. Check whether the mooring cable 12 and the hoisting cable 21 are in a taut state; S2. If the condition is normal, record the scale at the connection between the lifting cable 21 and the upper support 4, and then disconnect the lifting cable 21 from the upper support 4. S3. Connect the lifting cable 21 to the platform crane or other lifting device, and lift the pallet 2 and the data cable of the ocean current measurement sensor 3 to the platform for maintenance using the platform crane or other lifting device; S4. After maintenance, lower the pallet 2 using a platform crane or other lifting device. If there is no data before maintenance and the ocean current measurement sensor 3 and the circuit are normal after retrieval, it indicates that the ocean current measurement sensor 3 is covered by mud or sand. In this case, reduce the lowering depth of the pallet 2. If the data is normal before maintenance, lower the pallet 2 to the initial position according to the initial lowering depth. S5. Secure the lifting cable 21 to the upper support 4 to complete the device maintenance.

[0039] It should be noted that in this embodiment, when the mooring cable 12 and / or the lifting cable 21 are not in a tensioned state, it indicates that there is a connection failure between the bottom plate 1 and / or the support plate 2 and the upper support 4. At this time, the bottom plate 1 and / or the support plate 2 can be reconnected to the upper support 4 by diving operations to ensure that the current measurement device can be maintained normally.

[0040] Example 4 This fourth embodiment provides a method for recovering a shallow-water marine platform current measurement device as described in embodiment one, including the following steps: S1. Check whether the mooring cable 12 and the hoisting cable 21 are in a taut state; S2. If the condition is normal, disconnect the lifting cable 21 from the upper support 4; S3. Connect the lifting cable 21 to the platform crane or other lifting device, and lift the pallet 2 and the data cable of the ocean current measurement sensor 3 to the platform for recovery using the platform crane or other lifting device; S4. Determine whether the bottom plate 1 has sunk to a deeper position in the seabed mud or sand layer. If the bottom plate 1 has sunk to a deeper position in the seabed mud or sand layer, disconnect the mooring cable 12 and abandon the bottom plate 1 directly. If the bottom plate 1 has not sunk or has only sunk to a shallower position in the seabed mud or sand layer, then detach the mooring cable 12 from the upper support 4 and connect it to the platform crane. Use the platform crane to lift the bottom plate 1 to the platform for recovery.

[0041] It should be noted that in this embodiment, when the mooring cable 12 and / or the lifting cable 21 are not in a tensioned state, it indicates that there is a connection failure between the bottom plate 1 and / or the support plate 2 and the upper support 4. At this time, the bottom plate 1 and / or the support plate 2 can be reconnected to the upper support 4 by diving operations to ensure that the current measuring device can be recovered normally.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shallow water offshore platform current measuring device, characterised in that, include: A base plate (1) is provided with a guide post (11), and a mooring cable (12) is connected to the guide post (11); The pallet (2) is movably mounted on the guide post (11). The pallet (2) is adapted to move up and down along the guide post (11). A lifting cable (21) is also connected to the pallet (2). Ocean current measurement sensor (3), which is mounted on the tray (2); Upper support (4) is fixedly mounted on shallow water platform (5). The upper support (4) is adapted to be fixedly connected to the end of the mooring cable (12) away from the bottom plate (1) and the end of the lifting cable (21) away from the support plate (2).

2. The shallow water ocean platform current measuring device of claim 1 wherein, The number of guide posts (11) is two, and the two guide posts (11) are arranged opposite to each other on the left and right sides of the base plate (1).

3. The shallow water ocean platform current measuring device of claim 1 wherein, The number of lifting cables (21) is two, and the two lifting cables (21) are arranged opposite to each other on the left and right sides of the support plate (2).

4. The shallow water ocean platform current measuring device of claim 1 wherein, The lifting cable (21) is equipped with a scale.

5. The shallow water offshore platform current measuring device of claim 1 wherein, The tray (2) is also provided with a data cable guide hole (22).

6. The shallow water ocean platform current measuring device of claim 1 wherein, The upper bracket (4) is generally L-shaped. The upper bracket (4) has several fixing holes (41) corresponding to the mooring cable (12) and the lifting cable (21). The upper bracket (4) also has a data cable lead hole (42).

7. The shallow water ocean platform current measuring device of claim 6 wherein, The upper support (4) is also provided with supporting ribs (43) on both sides.

8. A method of installing a shallow water ocean platform current measuring device as claimed in any one of claims 1 to 7, characterised in that, Includes the following steps: The upper support (4) is installed on the deck of the shallow water platform (5); The pallet (2) is slidably mounted on the guide post (11) on the base plate (1), and the mooring cable (12) and the lifting cable (21) are respectively connected to the guide post (11) and the pallet (2); The ocean current measurement sensor (3) is mounted on the tray (2); The mooring cable (12) is connected to the platform crane at the end away from the bottom plate (1), and the assembled bottom plate (1), the support plate (2) and the ocean current measurement sensor (3) are lowered to the seabed using the platform crane; After being lowered into place, the mooring cable (12) is detached from the platform crane. The end of the mooring cable (12) away from the bottom plate (1) and the end of the lifting cable (21) away from the support plate (2) are respectively fixed and tied to the upper support (4) so ​​that the mooring cable (12) and the lifting cable (21) are in a taut state. The data line of the ocean current measurement sensor (3) is led up to the platform and connected to the monitoring device.

9. A method of maintaining a current measuring device for a shallow water offshore platform as claimed in any one of claims 1 to 7, characterised in that, Includes the following steps: Check whether the mooring cable (12) and the lifting cable (21) are in a taut state; If the condition is normal, disconnect the lifting cable (21) from the upper support (4); Connect the lifting cable (21) to the platform crane or other lifting device, and lift the pallet (2) and the data line of the ocean current measurement sensor (3) to the platform for maintenance by the platform crane or other lifting device; After maintenance, the pallet (2) is lowered using a platform crane or other lifting device. If there is no data before maintenance, and the ocean current measurement sensor (3) and its circuit are normal after recovery, it indicates that the ocean current measurement sensor (3) is covered by mud or sand. In this case, the lowering depth of the pallet (2) is reduced. If the data is normal before maintenance, the pallet (2) is lowered to the initial position according to the initial lowering depth. The lifting cable (21) is fixedly tied to the upper support (4) to complete the device maintenance.

10. A method of recovering a shallow water ocean platform current measuring device as claimed in any one of claims 1 to 7, characterised in that, Includes the following steps: Check whether the mooring cable (12) and the lifting cable (21) are in a taut state; If the condition is normal, disconnect the lifting cable (21) from the upper support (4); Connect the lifting cable (21) to the platform crane or other lifting device, and lift the pallet (2) and the data line of the ocean current measurement sensor (3) to the platform for recovery by the platform crane or other lifting device; Determine whether the bottom plate (1) has sunk to a deeper position in the seabed mud or sand layer. If the bottom plate (1) has sunk to a deeper position in the seabed mud or sand layer, disconnect the mooring cable (12) and abandon the bottom plate (1). If the bottom plate (1) has not sunk or has only sunk to a shallower position in the seabed mud or sand layer, detach the mooring cable (12) from the upper support (4) and connect it to the platform crane. Use the platform crane to lift the bottom plate (1) to the platform for recovery.

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