A method of adjusting a flexible pipe joint of a marine vessel

Abstract

This invention provides a method for adjusting a ship's flexible nozzle. The method includes: acquiring current ship navigation condition information; installing adjustable multi-section sleeves between the ship's inlet and outlet flexible nozzles, and controlling the adjustable multi-section sleeves to switch lengths between preset length positions; collecting the deformation of the inlet and outlet flexible nozzles; calculating the comprehensive deformation based on the deformation, and selecting the combination of lengths that minimizes the comprehensive deformation as the optimal length under the current operating conditions; and adjusting the adjustable multi-section sleeve to the optimal length. This invention's method for adjusting a ship's flexible nozzle, by introducing adjustable multi-section sleeves and combining the collection and comprehensive evaluation of flexible nozzle deformation, automatically selects appropriate sleeve length combinations, ensuring that the deformation of the inlet and outlet flexible nozzles is in an optimal state, thereby improving their working conditions.

Description

Technical Field

[0001] This invention relates to the technical field of ship flexible overlock adjustment methods, and more particularly to a ship flexible overlock adjustment method. Background Technology

[0002] In related technologies, the flexible nozzles in a ship's navigation system have fixed connection pipe lengths after installation and cannot be adjusted according to the ship's actual navigation conditions. When the ship is at different drafts, the hull structure will deform to varying degrees, causing the flexible nozzles at the inlet and outlet to experience unexpected displacements or stresses. Due to the lack of adjustment mechanisms, the deformation of the flexible nozzles is difficult to control, which may deviate from the design operating range, affecting their buffering performance and increasing the risk of pipeline system failure or structural damage. Summary of the Invention

[0003] This invention provides a method for adjusting a ship's flexible nozzle, which solves the defects in the prior art where the flexible nozzle cannot be adjusted after installation and its deformation is uncontrollable at different drafts, resulting in decreased buffering performance and increased structural safety risks. It achieves dynamic adaptation and optimization of the deformation state of the inlet and outlet flexible nozzles.

[0004] This invention provides a method for adjusting a ship's flexible control system, comprising: Obtain current ship navigation status information; An adjustable multi-section sleeve is installed between the inlet pipe and the inlet flexible connector of the ship, and between the outlet pipe and the outlet flexible connector of the ship, to control the length of the adjustable multi-section sleeve to switch between various preset length positions. The deformation of the inlet flexible connector and the outlet flexible connector is collected; The comprehensive deformation is calculated based on the deformation amount, and the gear combination that minimizes the comprehensive deformation amount is selected as the optimal gear under the current working condition. Adjust the adjustable multi-section sleeve to the optimal setting.

[0005] In some embodiments, the adjustable multi-section sleeve includes an inlet sleeve and an outlet sleeve. The inlet sleeve is located between the inlet pipe and the inlet flexible connector, and has m length positions, numbered L1, L2, ..., L in ascending order. m ; The outlet sleeve is located between the outlet pipe and the outlet flexible connector, and has n length positions, numbered G1, G2, ..., G... from shortest to longest. n , where m and n are both integers greater than or equal to 2.

[0006] In some embodiments, controlling the adjustable multi-section sleeve to switch lengths between preset length positions includes: The inlet sleeve and the outlet sleeve are adjusted one by one in m×n gear combinations, and the corresponding deformation amount E of the inlet flexible pipe and the deformation amount F of the outlet flexible pipe are recorded under each combination.

[0007] In some embodiments, calculating the comprehensive deformation based on the deformation includes: The deformation amount E of the inlet flexible nozzle and the deformation amount F of the outlet flexible nozzle are normalized respectively.

[0008] In some embodiments, calculating the comprehensive deformation based on the deformation includes: Based on the normalization results and the preset weighting relationship, a comprehensive deformation quantity G is constructed to characterize the overall deformation state.

[0009] In some embodiments, the gear combination that minimizes the overall deformation is selected as the optimal gear for the current working condition: Compare the m×n comprehensive deformation quantities G, and select the gear combination corresponding to the smallest G value as the optimal gear under the current navigation conditions.

[0010] In some embodiments, a displacement sensor is provided on the adjustable multi-section bushing to measure the deformation E of the inlet flexible connector and the deformation F of the outlet flexible connector.

[0011] In some embodiments, a servo controller and a stepper motor are provided on both the inlet sleeve and the outlet sleeve. The servo controller controls the stepper motor to drive the adjustable multi-section sleeve to achieve length adjustment.

[0012] In some embodiments, the ship flexible control adjustment method further includes: storing the optimal gear corresponding to different navigation conditions, and directly calling the corresponding optimal gear when the same condition occurs again.

[0013] In some embodiments, obtaining the current ship navigation status information includes: Receive operating parameters from the ship's draft measurement device or attitude measurement device to determine the current required adjustment strategy.

[0014] The ship flexible nozzle adjustment method of this invention achieves dynamic adaptation of pipe connection length by introducing adjustable multi-section sleeves between the inlet and outlet flexible nozzles, and by combining the collection and comprehensive evaluation of the flexible nozzle deformation. This method can automatically select appropriate sleeve length combinations based on the ship's current navigation conditions, ensuring that the deformation of the inlet and outlet flexible nozzles is in an optimal state, thereby improving their working conditions. Compared to existing fixed installation methods, this solution enhances the adaptability of the inlet and outlet flexible nozzles at different drafts, helps maintain their buffering function, and reduces structural risks caused by uncontrolled deformation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the ship flexible nozzle adjustment method provided by the present invention.

[0017] Figure 2 This is a schematic diagram of the ship flexible nozzle adjustment system provided by the present invention.

[0018] Figure 3 This is a schematic diagram of the adjustable multi-section sleeve provided by the present invention.

[0019] Figure 4 This is a schematic diagram of the threaded sleeve provided by the present invention.

[0020] Figure label: 1. Inlet pipe; 11. Inlet flexible connector; 2. Outlet pipe; 21. Outlet flexible connector; 3. Adjustable multi-section sleeve; 31. Threaded sleeve; 311. Connecting rod; 32. Rope; 33. Pulley; 4. Displacement sensor; 5. Servo controller; 6. Stepper motor. Detailed Implementation

[0021] 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.

[0022] The following is combined Figures 1 to 4 The present invention describes a method for adjusting a ship's flexible nozzle.

[0023] like Figure 1 As shown, the ship flexible nozzle adjustment method of this embodiment includes: acquiring current ship navigation condition information; installing adjustable multi-section sleeves 3 between the ship's inlet pipe 1 and the inlet flexible nozzle 11, and between the ship's outlet pipe 2 and the outlet flexible nozzle 21; controlling the adjustable multi-section sleeves 3 to switch lengths between preset length positions; collecting the deformation of the inlet flexible nozzle 11 and the outlet flexible nozzle 21; calculating the comprehensive deformation based on the deformation, and selecting the position combination that minimizes the comprehensive deformation as the optimal position under the current operating condition; and adjusting the adjustable multi-section sleeves 3 to the optimal position.

[0024] like Figure 2 As shown, the ship's flexible nozzle adjustment system includes an inlet, an inlet flexible nozzle 11, an inlet pipe 1, an outlet pipe 2, an outlet flexible nozzle 21, and an outlet. Seawater enters through the inlet, passes through the inlet flexible nozzle 11 and the inlet pipe 1 in sequence to reach the heat exchange equipment. After heat exchange with the heat exchange equipment, the seawater flows through the outlet pipe 2 and the outlet flexible nozzle 21 before flowing out of the outlet.

[0025] Operating condition information refers to operational status parameters related to hull deformation, such as draft, trim angle, heel angle, speed, or load status, which are used to determine the appropriate casing adjustment strategy for the current navigation conditions.

[0026] In related technologies, the flexible nozzles in a ship's navigation system have fixed connection pipe lengths after installation and cannot be adjusted according to the ship's actual navigation conditions. When the ship is at different drafts, the hull structure will deform to varying degrees, causing the flexible nozzles at the inlet and outlet to experience unexpected displacements or stresses. Due to the lack of adjustment mechanisms, the deformation of the flexible nozzles is difficult to control, which may deviate from the design operating range, affecting their buffering performance and increasing the risk of pipeline system failure or structural damage.

[0027] The ship flexible nozzle adjustment method of this invention introduces an adjustable multi-section sleeve 3 between the inlet pipe 1 and the inlet flexible nozzle 11, and between the outlet pipe 2 and the outlet flexible nozzle 21, and combines this with the collection and comprehensive evaluation of the deformation of the flexible nozzles to achieve dynamic adaptation of the pipe connection length. This method can automatically select a suitable sleeve length combination according to the ship's current navigation conditions, ensuring that the deformation of the inlet flexible nozzle 11 and the outlet flexible nozzle 21 is in an optimal state, thereby improving their working conditions. Compared with existing fixed installation methods, this solution enhances the adaptability of the inlet flexible nozzle 11 and the outlet flexible nozzle 21 at different drafts, helps maintain their buffering function, and reduces structural risks caused by uncontrolled deformation.

[0028] In some embodiments, the adjustable multi-section sleeve 3 includes an inlet sleeve and an outlet sleeve. The inlet sleeve is located between the inlet pipe 1 and the inlet flexible connector 11, and has m length positions, numbered L1, L2, ..., L... from shortest to longest. m The outlet sleeve is located between outlet pipe 2 and outlet flexible connector 21, and has n length positions, from shortest to longest: G1, G2, ..., G... n , where m and n are both integers greater than or equal to 2.

[0029] In this embodiment, there are two adjustable multi-section sleeves 3, namely an inlet sleeve and an outlet sleeve. The inlet sleeve and the outlet sleeve have the same structure and are arranged on the inlet side and the outlet side of the ship's flexible nozzle adjustment system, respectively. Each adjustable multi-section sleeve 3 has multiple positions. The inlet sleeve provides m selectable lengths, and the outlet sleeve provides n selectable lengths. The positions are arranged in ascending order of length, which facilitates selection and combination as needed.

[0030] The ship flexible nozzle adjustment method of this invention, by setting adjustable multi-section sleeves 3 with multiple length positions on both the inlet and outlet sides, enables the ship flexible nozzle adjustment system to more flexibly match the asymmetrical deformation of the hull under different navigation conditions, avoiding the problem of insufficient compensation or over-adjustment caused by adjusting only one side.

[0031] In some embodiments, controlling the adjustable multi-section bushing 3 to switch lengths between preset length positions includes: adjusting the inlet bushing and outlet bushing one by one in m×n combinations, and recording the corresponding deformation amount E of the inlet flexible connector 11 and the deformation amount F of the outlet flexible connector 21 under each combination.

[0032] In this embodiment, the system sequentially traverses all m×n combinations formed by the m positions of the inlet sleeve and the n positions of the outlet sleeve. Each time a combination is switched to, i.e. after stabilization, the deformation amount E of the inlet flexible connector 11 and the deformation amount F of the outlet flexible connector 21 are collected and the data are stored accordingly for subsequent evaluation.

[0033] The ship flexible nozzle adjustment method of this invention provides a complete data basis for the calculation of comprehensive deformation by systematically testing all feasible length combinations and obtaining the corresponding deformation response, so that the selection of the optimal gear is based on actual measurement feedback, rather than relying on theoretical estimation or empirical assumptions.

[0034] In some embodiments, calculating the comprehensive deformation based on the deformation includes normalizing the deformation E of the inlet flexible nozzle 11 and the deformation F of the outlet flexible nozzle 21.

[0035] The normalization calculation formula is: ; ; Where k = 1, 2, ..., m×n, These are the minimum and maximum values ​​of E, respectively. Let F be the minimum and maximum values ​​among all F values, respectively.

[0036] In some embodiments, calculating the comprehensive deformation based on the deformation includes: Based on the normalization results and the preset weighting relationship, a comprehensive deformation quantity G is constructed to characterize the overall deformation state.

[0037] The formula for calculating the total deformation G is: .

[0038] Wherein, α and β are weighting coefficients, satisfying α+β=1 and α and β≥0. α and β can be set according to the requirements for the deformation of the inlet flexible nozzle and the deformation of the outlet flexible nozzle 21.

[0039] In this embodiment, the system sets the relative importance of the deformation on the inlet side and the outlet side according to engineering requirements, assigns corresponding weight coefficients, and linearly combines the normalized results according to the weight relationship to form a single comprehensive deformation amount G, which is used to quantify the working state of the overall flexible pipe under the current gear combination.

[0040] The ship flexible nozzle adjustment method of this invention introduces a configurable weight relationship, so that the construction of the comprehensive deformation can adapt to the different requirements of different ships or different pipelines for the buffer performance of the inlet / outlet side, thereby improving the applicability and pertinence of the adjustment strategy.

[0041] In some embodiments, the gear combination that minimizes the overall deformation is selected as the optimal gear under the current operating condition: compare m×n overall deformation values ​​G, and select the gear combination corresponding to the smallest G value as the optimal gear under the current navigation operating condition.

[0042] In this embodiment, after completing the testing and comprehensive deformation calculation of all m×n combinations, the system compares all G values ​​and selects the combination of inlet and outlet sleeve positions corresponding to the smallest value as the adjustment scheme to be adopted under the current working condition.

[0043] The ship flexible nozzle adjustment method of this invention aims to minimize the overall deformation, ensuring that the selected gear combination keeps the overall deformation of the inlet and outlet flexible nozzles 21 at a relatively low level, which helps maintain their design buffering capacity and reduces the risk of performance degradation caused by excessive stretching or compression.

[0044] In some embodiments, a displacement sensor 4 is provided on the adjustable multi-section sleeve 3 to measure the deformation E of the inlet flexible connector 11 and the deformation F of the outlet flexible connector 21.

[0045] In this embodiment, displacement sensor 4 is installed on the inlet flexible pipe 11 and the outlet flexible pipe 21 to sense the displacement changes of the flexible pipe in the axial or other key directions in real time and output the corresponding deformation signal.

[0046] The ship flexible nozzle adjustment method of this invention improves the accuracy of adjustment decisions by directly measuring the actual deformation of the flexible nozzle, enabling the system to make feedback adjustments based on the actual working state, rather than relying on indirect calculations.

[0047] In some embodiments, a servo controller 5 and a stepper motor 6 are provided on both the inlet sleeve and the outlet sleeve. The servo controller 5 controls the stepper motor 6 to drive the adjustable multi-section sleeve 3 to achieve length adjustment.

[0048] In this embodiment, the inlet sleeve and the outlet sleeve are each equipped with a driving device, including a stepper motor 6 and a servo controller 5. After receiving the adjustment command, the servo controller 5 controls the stepper motor 6 to rotate, thereby driving the adjustable multi-section sleeve 3 to rotate, so as to achieve precise switching and positioning of the length between preset levels.

[0049] The ship flexible nozzle adjustment method of this invention adopts a combination of servo control and stepper motor 6, which enables the length adjustment of multi-section sleeves to be automated, repeatable and position controllable, and supports the system to automatically perform optimized adjustment according to changes in operating conditions during navigation without manual intervention.

[0050] In some embodiments, the ship flexible take-off adjustment method further includes storing the optimal gear corresponding to different navigation conditions, and directly calling the corresponding optimal gear when the same condition occurs again.

[0051] In this embodiment, after the system completes the search for the optimal gear under a certain navigation condition, it associates the characteristics of the condition (such as draft and attitude parameters) with the corresponding optimal gear combination and saves them to the storage module. When the ship identifies the same or similar conditions in subsequent operations, it directly reads and applies the stored gear combination, skipping the re-traversal test process.

[0052] The ship flexible control adjustment method of this invention reduces the time and energy consumption required for repeated adjustments by establishing a mapping relationship between operating conditions and optimal adjustment parameters, thereby improving the system's response efficiency and practicality in ship operation scenarios that frequently travel to and from similar navigation areas.

[0053] In some embodiments, obtaining current ship navigation condition information includes receiving condition parameters from a ship draft measurement device or attitude measurement device to determine the current required adjustment strategy.

[0054] In this embodiment, the system obtains real-time operating parameters from the ship's existing draft sensors, trim / roll attitude instruments, and other equipment. These parameters are used as the basis for judging the current deformation state of the hull, and accordingly trigger the corresponding sleeve adjustment process or call the pre-stored optimal gear.

[0055] The ship flexible control adjustment method of this invention utilizes the operating parameters provided by the ship's existing sensing system to achieve linkage between the adjustment strategy and the actual hull state.

[0056] In other embodiments, such as Figure 3 and Figure 4 As shown, the adjustable multi-section sleeve 3 includes a threaded sleeve 31, ropes 32, and pulleys 33. Each threaded sleeve 31 is equipped with two stepper motors 6 and two ropes 32. A connecting rod 311 is provided on the outer periphery of the threaded sleeve 31. In the initial state, the connecting rod 311 is located on one side of the threaded sleeve 31 in the radial direction, and the two stepper motors 6 are located on the other side of the threaded sleeve 31 in the radial direction. For example, taking the radial direction of the threaded sleeve 31 as the left-right direction, such as... Figure 3 As shown, the connecting rod 311 is located on the left side of the threaded sleeve 31, and the two stepper motors 6 are located on the right side of the threaded sleeve 31.

[0057] One rope 32 connects the connecting rod 311 to the output shaft of a stepper motor 6, and the other rope 32 connects the connecting rod 311 to the output shaft of another stepper motor 6. The two ropes 32 are respectively located on both radial sides of the threaded sleeve 31. When the threaded sleeve 31 needs to be rotated, one stepper motor 6 pulls the rope 32, and the other stepper motor 6 releases the rope 32, causing the connecting rod 311 to rotate clockwise or counterclockwise, thereby driving the threaded sleeve 31 to rotate.

[0058] Two pulleys 33 are located near the stepper motor 6 and are respectively set with two ropes 32 to assist the movement of the ropes 32.

[0059] The working requirements can be met if the rotation angle of the threaded sleeve 31 is less than 180 degrees, that is, the rotation angle of the connecting rod 311 is less than 180 degrees.

[0060] like Figure 4 As shown, the outer circumferential surface of the threaded sleeve 31 is provided with a first threaded section and a second threaded section, and the threads of the first threaded section and the second threaded section have opposite directions.

[0061] On the inlet side, the inner circumferential surfaces of the inlet pipe 1 and the inlet flexible connector 11 are threaded. The first threaded section is threadedly connected to the inlet pipe 1, and the second threaded section is threadedly connected to the inlet flexible connector 11. When the threaded sleeve 31 rotates, the inlet pipe 1 and the inlet flexible connector 11 do not rotate. However, since the first and second threaded sections rotate in opposite directions, the inlet pipe 1 and the inlet flexible connector 11 move closer or further away synchronously.

[0062] On the outlet side, the inner circumferential surfaces of the outlet pipe 2 and the outlet flexible connector 21 are threaded. The first threaded section is threadedly connected to the outlet pipe 2, and the second threaded section is threadedly connected to the outlet flexible connector 21. When the threaded sleeve 31 rotates, the outlet pipe 2 and the outlet flexible connector 21 do not rotate. However, since the first and second threaded sections rotate in opposite directions, the outlet pipe 2 and the outlet flexible connector 21 move closer or further away synchronously.

[0063] Since the inlet pipe 1 and outlet pipe 2 are fixed to the hull, the rotation of the threaded sleeve 31 will cause the inlet flexible connector 11 or the outlet flexible connector 21 to move.

[0064] Rope 32 is a steel wire rope 32.

[0065] 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 method for adjusting a ship's flexible control pipe, characterized in that, include: Obtain current ship navigation status information; An adjustable multi-section sleeve is installed between the inlet pipe and the inlet flexible connector of the ship, and between the outlet pipe and the outlet flexible connector of the ship, to control the length of the adjustable multi-section sleeve to switch between various preset length positions. The deformation of the inlet flexible connector and the outlet flexible connector is collected; The comprehensive deformation is calculated based on the deformation amount, and the gear combination that minimizes the comprehensive deformation amount is selected as the optimal gear under the current working condition. Adjust the adjustable multi-section sleeve to the optimal setting.

2. The method for adjusting a ship's flexible control pipe according to claim 1, characterized in that, The adjustable multi-section sleeve includes an inlet sleeve and an outlet sleeve. The inlet sleeve is located between the inlet pipe and the inlet flexible connector, and has m length positions, numbered L1, L2, ..., L... from shortest to longest. m ; The outlet sleeve is located between the outlet pipe and the outlet flexible connector, and has n length positions, numbered G1, G2, ..., G... from shortest to longest. n , where m and n are both integers greater than or equal to 2.

3. The method for adjusting a ship's flexible control pipe according to claim 2, characterized in that, The control of switching the length of the adjustable multi-section sleeve between preset length positions includes: The inlet sleeve and the outlet sleeve are adjusted one by one in m×n gear combinations, and the corresponding deformation amount E of the inlet flexible pipe and the deformation amount F of the outlet flexible pipe are recorded under each combination.

4. The method for adjusting a ship's flexible control pipe according to claim 3, characterized in that, The calculation of the comprehensive deformation based on the deformation includes: The deformation amount E of the inlet flexible nozzle and the deformation amount F of the outlet flexible nozzle are normalized respectively.

5. The method for adjusting a ship's flexible control pipe according to claim 4, characterized in that, The calculation of the comprehensive deformation based on the deformation includes: Based on the normalization results and the preset weighting relationship, a comprehensive deformation quantity G is constructed to characterize the overall deformation state.

6. The method for adjusting a ship's flexible control pipe according to claim 5, characterized in that, The gear combination that minimizes the overall deformation is selected as the optimal gear under the current working condition. Compare the m×n comprehensive deformation quantities G, and select the gear combination corresponding to the smallest G value as the optimal gear under the current navigation conditions.

7. The method for adjusting a ship's flexible control system according to claim 1, characterized in that, A displacement sensor is installed on the adjustable multi-section bushing to measure the deformation E of the inlet flexible connector and the deformation F of the outlet flexible connector.

8. The method for adjusting a ship's flexible control pipe according to claim 2, characterized in that, A servo controller and a stepper motor are installed on both the inlet and outlet sleeves. The servo controller controls the stepper motor to drive the adjustable multi-section sleeve to achieve length adjustment.

9. The method for adjusting a ship's flexible control pipe according to claim 1, characterized in that, Also includes: The optimal gear corresponding to different navigation conditions is stored, and the corresponding optimal gear is directly called when the same condition occurs again.

10. The method for adjusting a ship's flexible control pipe according to claim 1, characterized in that, The acquisition of current ship navigation status information includes: Receive operating parameters from the ship's draft measurement device or attitude measurement device to determine the current required adjustment strategy.

Images