High-pressure water injection system for self-lifting barge
The high-pressure water spray system for self-elevating barges addresses the issue of hose tangling by using a winding and control mechanism to automatically adjust hose length, preventing damage and tension during lifting leg operations.
Patent Information
- Application Number
- JP2024123034
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2026-02-12
AI Technical Summary
High-pressure water hoses in self-elevating barges become tangled or caught on surrounding equipment during the lifting and lowering of the lifting legs, leading to unnecessary tension and potential damage.
A high-pressure water spray system with a winding means and control means that automatically reels in and retracts the high-pressure water hose based on lifting data, using a rotary drive mechanism to maintain an appropriate hose length regardless of the lifting leg position.
Prevents unnecessary tension and damage to the high-pressure water hose by ensuring it follows the movement of the lifting legs, maintaining an optimal length through real-time control and adjustment.
Smart Images
Figure 2026021848000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a high-pressure water jetting system for a self-lifting barge equipped with lifting legs, which is capable of jetting high-pressure water at a position below the lifting legs. [Background technology]
[0002] Self-elevating barges have been used for marine operations for some time. A self-elevating barge is mainly composed of a barge and a number of lifting legs for supporting the barge, and the bottom parts at the lower ends of the lifting legs are supported by touching the seabed.
[0003] The bottom landing portion of the lifting legs of such a self-elevating barge can become covered with sediment or can penetrate into the seabed due to the weight of the barge, which can result in a large load being placed on the lifting legs when they are raised.
[0004] In this situation, for example, Non-Patent Document 1 discloses a technology for a high-pressure water injection system in which a nozzle is installed at the bottom and high-pressure water is injected from the nozzle to remove sediment around the bottom, thereby reducing resistance when the lifting legs are raised.
[0005] 1, the high-pressure water jetting system described above is provided with a high-pressure water pipe 14 that extends from the upper end side to the lower end side of the lifting leg 11, and further from the inside of the bottom landing part 12 to a jet nozzle 121 on the outer surface. A high-pressure water hose 15 that supplies high-pressure water from a high-pressure water generator 16 is connected to a connection port 141 of the high-pressure water pipe 14 provided on the outer surface of the upper end of the lifting leg 11.
[0006] This allows high-pressure water to be sprayed from the spray nozzle 121 opening on the outer surface of the bottom landing portion 12 of the lifting leg 11, thereby removing soil and sand around the bottom landing portion 12 with the sprayed high-pressure water, thereby reducing the load on the lifting leg 11 when it is raised and making it possible to raise the lifting leg 11 efficiently. [Prior art documents] [Non-patent literature]
[0007] [Non-Patent Document 1] Kohan Omid et al., CENTRIFUGE EXPERIMENTS TO STUDY EXTRACTION OF A DEEPLY EMBEDDED SPUDCAN USING TOP JETTING,ASME 2013 32nd International Conference on Ocean,Vol.6,9 Jun 2013 Summary of the Invention [Problem to be solved by the invention]
[0008] However, when the lifting legs 11 are raised, the high-pressure water pipes 14, their connection ports 141, and the high-pressure water hoses 15 connected to the connection ports 141 are also pulled upward in response to the lifting of the lifting legs 11. This means that the high-pressure water hoses 15 do not move appropriately with the lifting or lowering of the lifting legs 11, and for example, the high-pressure water hoses 15 may get caught on surrounding equipment or tangled with each other, causing unnecessary tension to act on the high-pressure water hoses 15 and possibly causing damage.
[0009] In view of the above-mentioned problems, the present invention aims to provide a high-pressure water spray system for a self-lifting barge that allows the high-pressure water hose to appropriately follow the rise and fall of the lifting legs. [Means for solving the problem]
[0010] The invention related to (1) is a high-pressure water spray system for a self-lifting barge having a lifting leg with a bottom-attaching section that can be raised and lowered by a lifting device provided on the barge, a high-pressure water pipe provided inside the bottom-attaching section and the lifting leg and connected to a spray nozzle on the bottom-attaching section, a high-pressure water hose connected to the high-pressure water pipe at the top of the lifting leg, and a high-pressure water generating device that supplies high-pressure water to the high-pressure water hose, the high-pressure water spray system for a self-lifting barge also comprising: a winding means that can reel in and retract the high-pressure water hose using a rotary drive means; and a control means that controls the drive of the rotary drive means, wherein the control means controls the drive of the rotary drive means based on lifting data for the lifting leg.
[0011] The invention according to (2) is the elevation data but The high-pressure water jetting system for a self-elevating barge described in (1) above is characterized in that the lifting time, lifting speed, and lifting distance of the lifting legs are at least one of the factors.
[0012] The invention according to (3) is the elevation data but The high-pressure water jetting system for a self-lifting barge described in (1) above is characterized in that the distance (L) from the connection port between the high-pressure water pipe and the high-pressure water hose to the specific point below the connection port is calculated based on the distance (y) from the connection port to the specific point below the connection port and the distance (x) from the specific point to the winding means.
[0013] The invention according to (4) is the elevation data but The high-pressure water jetting system for a self-lifting barge described in (1) above is characterized in that the distance (L) from the connection port between the high-pressure water pipe and the high-pressure water hose to a specific point below the connection port is calculated based on the distance (y) from the specific point to the winding means, the distance (x) from the specific point to the winding means, and the angle (θ) between the line segment of the distance (y) and the line segment of the distance (x).
[0014] The invention related to (5) is a high-pressure water injection system for a self-lifting barge described in (4) above, characterized in that it is equipped with an inclination measurement means that is installed on the barge and is capable of measuring the inclination angle of the barge, and the control means is capable of correcting the angle (θ) based on the measurement results of the inclination measurement means. [Effects of the Invention]
[0015] According to the present invention, when the lifting legs are raised or lowered, the high-pressure water hose is automatically reeled out or retracted by the winding means in response to the raising or lowering of the lifting legs. This effectively prevents unnecessary tension from being applied to the high-pressure water hose, as occurs in the conventional case, when the high-pressure water hose gets caught on surrounding equipment or becomes tangled with other equipment. [Brief explanation of the drawings]
[0016] [Figure 1] FIG. 1 is a diagram illustrating a high-pressure water jetting system for a conventional self-lifting barge. [Figure 2] FIG. 2 is a side view illustrating a high-pressure water jetting system of a self-elevating barge in one embodiment of the present invention. [Figure 3] FIG. 2 is a side view illustrating a control configuration in one embodiment of the present invention. [Figure 4] 10A and 10B are side views illustrating a control mode when the lifting legs are raised in one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION
[0017] Hereinafter, one embodiment of a high-pressure water jetting system for a self-elevating barge of the present invention will be described with reference to the drawings.
[0018] 2 shows a side view illustrating the high-pressure water jetting system 1 for a self-elevating barge of this embodiment. That is, the prerequisite configuration is a self-elevating barge high-pressure water jetting system 1 having lifting legs 11 with bottom-mounted parts 12 that can be raised and lowered by lifting devices 13 provided on the barge 10, high-pressure water pipes 14 that are provided inside the bottom-mounted parts 12 and the lifting legs 11 and connected to jet nozzles 121 of the bottom-mounted parts 12, high-pressure water hoses 15 that are connected to the high-pressure water pipes 14 at the top of the lifting legs 11, and a high-pressure water generator 16 that supplies high-pressure water to the high-pressure water hoses 15.
[0019] Furthermore, as shown in the figure, it is equipped with a winding means 17 that can reel in and out the high-pressure water hose 15 using a rotary drive means 171, and a control means 30 that controls the drive of the rotary drive means 171, and the control means 30 is able to control the drive of the rotary drive means 171 based on the lifting and lowering data of the lifting legs 11.
[0020] The control means 30 of this embodiment is connected to the rotation drive means 171 of the winding means 17 and the lifting device 13 of the lifting leg 11 via wire or wirelessly, and is able to control the drive of the rotation drive means 171 based on the lifting data transmitted from the lifting device 13.
[0021] It should be noted that the above-mentioned lifting / lowering data is not necessarily limited to that transmitted from the lifting device 13, and for example, it is also possible to provide a separate device for acquiring the lifting / lowering data of the lifting leg 11 on or near the lifting leg 11 itself.
[0022] Furthermore, the lifting / lowering data is not limited to a specific type of data. For example, it can be at least one of the lifting / lowering time, lifting / lowering speed, and lifting / lowering distance of the lifting leg 11. In other words, if it is possible to directly or indirectly determine the height position of the connection part of the high-pressure water hose 15 above the lifting leg 11, it is possible to execute drive control of the rotation drive means 171 based on the result of such determination. As a result, when the lifting leg 11 is raised or lowered, the high-pressure water hose 15 is driven by the rise or fall of the lifting leg 11. teeth The winding means 17 automatically performs the feeding and rewinding.
[0023] By controlling the drive of the rotation drive means 171 of the winding means 17 in this way, the length of the high-pressure water hose 15 between the connection part of the high-pressure water hose 15 and the winding means 17 is maintained at an appropriate length regardless of the elevation position of the lifting leg 11, as shown in Figure 4. This effectively prevents unnecessary tension from being applied to the high-pressure water hose, as in the past, when the high-pressure water hose gets caught on surrounding equipment or tangled with other equipment.
[0024] As a control configuration by the control means 30, as shown in FIG. 3, the above-mentioned lifting data can be a distance (L) from the connection port 141 between the high-pressure water pipe 14 and the high-pressure water hose 15 to a specific point below the connection port 141, which is calculated based on a distance (y) from the connection port to the winding means 17, and a distance (x) from the specific point to the winding means 17. 。
[0025] Specifically, if the angle between the line segment of the distance (y) and the line segment of the distance (x) is 90°, the distance (L) can be easily determined, and by controlling the rotation drive means 171 of the winding means 17 so that the length of the high-pressure water hose 15 is a predetermined amount longer than the distance (L), it is possible to maintain the length of the high-pressure water hose 15 appropriately regardless of the raised or lowered position of the lifting leg 11.
[0026] In addition, the above-mentioned lifting data can be the distance (L) from the connection port 141 between the high-pressure water pipe 14 and the high-pressure water hose 15 to a specific point below the connection port 141, the distance (x) from the specific point to the winding means 17, and the angle (θ) between the line segment of the distance (y) and the line segment of the distance (x).
[0027] Specifically, the distance (L) can be easily calculated using equation (1) shown in Figure 3, and by controlling the rotation drive means 171 of the winding means 17 so that the length of the high-pressure water hose 15 is a predetermined amount longer than the distance (L), it is possible to maintain the length of the high-pressure water hose 15 appropriately regardless of the raised or lowered position of the lifting leg 11.
[0028] Furthermore, as shown in Figure 2, the barge 10 can be equipped with an inclination measurement means 18 that can measure the inclination angle of the barge 10, and the control means 30 can correct the above-mentioned angle (θ) based on the inclination angle of the barge 10 transmitted in real time from the inclination measurement means 18.
[0029] Specifically, when the barge 10 tilts and the lifting legs 11 are tilted relative to the barge 10, this tilt can be reflected in the angle (θ) and corrected, thereby making it possible to more accurately determine the distance (L).
[0030] In other words, based on a more accurate angle (θ), it is possible to accurately determine the distance (L) from the connection port 141 to the winding means 17, and it is possible to accurately and appropriately maintain the length of the high-pressure water hose 15 regardless of the raised or lowered position of the lifting leg 11.
[0031] Although the embodiment and other embodiments of the present invention have been described above, the present invention is not necessarily limited to the above-described embodiments.
[0032] The scope of the present invention is defined by the claims rather than the description of the above embodiments, and includes all modifications within the meaning and scope of the claims. Furthermore, the specific materials, dimensions, shapes, etc. described in the above embodiments can be modified within the scope of solving the problems of the present invention. [Explanation of symbols]
[0033] 1. High-pressure water injection system 10 barges 11 Lifting legs 12 Bottom landing part 121 Injection nozzle 13 Lifting device 14 High-pressure water pipe 141 Connection port 15 High-pressure water hose 16 High-pressure water generator 17 Winding means 171 Rotational drive means 18 Tilt measurement means 30 Control Means
Claims
1. A high-pressure water jetting system for a self-elevating barge, comprising: a lifting leg with a bottom-attached portion that can be raised and lowered by a lifting device provided on the barge; a high-pressure water pipe provided inside the bottom-attached portion and the lifting leg and connected to a jet nozzle of the bottom-attached portion; a high-pressure water hose connected to the high-pressure water pipe at an upper portion of the lifting leg; and a high-pressure water generating device that supplies high-pressure water to the high-pressure water hose, a winding means capable of reeling out and reeling out the high-pressure water hose by a rotary drive means; a control means for controlling the rotation of the rotary drive means, The control means Drive control of the rotation drive means is performed based on the lifting data of the lifting legs. A high-pressure water jetting system for a self-lifting barge.
2. The elevation data is At least one of the lifting time, lifting speed, and lifting distance of the lifting legs.
2. The high-pressure water jetting system for a self-lifting barge according to claim 1.
3. The elevation data is The distance (L) from the connection port between the high-pressure water pipe and the high-pressure water hose to a specific point below the connection port is calculated based on the distance (y) from the connection port to the specific point below the connection port and the distance (x) from the specific point to the winding means.
2. The high-pressure water jetting system for a self-lifting barge according to claim 1.
4. The elevation data is The distance (L) from the connection port between the high-pressure water pipe and the high-pressure water hose to a specific point below the connection port is calculated based on the distance (y) from the specific point to the winding means, and the angle (θ) between the line segment of the distance (y) and the line segment of the distance (x).
2. The high-pressure water jetting system for a self-lifting barge according to claim 1.
5. a tilt measuring means provided on the barge and capable of measuring the tilt angle of the barge; The control means The angle (θ) can be corrected based on the measurement result of the tilt measurement means.
5. The self-lifting barge high-pressure water jetting system according to claim 4.