Unmanned ship high-precision sounding method for multi-beam data intelligent correction

Abstract

The invention relates to the technical field of marine sounding pipes, and discloses an unmanned ship high-precision sounding method for multi-beam data intelligent correction, and the method comprises the following steps: S1, material preparation: selecting a proper pipe according to the specification and requirements of a marine sounding self-closing valve; s2, pipe cutting is conducted, specifically, pipes of different models are cut through cutting equipment, and the cutting lengths are uniform; S3, a groove is prepared, specifically, a groove is prepared in one end of each cut pipe through a beveling machine; according to the invention, through improvement, the sounding pipe designed in a drawing and provided with threads at the pipe end is changed into a direct butt joint mode of the screwed joint and the pipe, the manufacturing process is simplified, and the screwed joint is made into a standard part and is not influenced by the shape of the pipe designed in the drawing. On one hand, production preparation can be performed in advance, meanwhile, the working procedure operation difficulty is reduced, and the pipe manufacturing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of marine sounding tube technology, specifically to a high-precision depth sounding method for unmanned vessels with intelligent multi-beam data correction. Background Technology

[0002] The sounding tube of a self-closing depth sounder is a device installed on ships to measure liquid levels. It is typically used in conjunction with an automatic shut-off valve to prevent liquid spillage and fire hazards. Among the various measuring devices on a ship, the sounding tube of a self-closing depth sounder is a critical component. It not only simplifies liquid level measurement but also enhances safety through its automatic shut-off mechanism. The configuration, operating principle, and maintenance of the sounding tube are all crucial to the safe operation of the ship.

[0003] During the fabrication of sounding pipes, for those requiring the installation of sounding self-closing valves, the piping parts drawing indicates that the pipe ends should be threaded, such as G1 1 / 2” or G2 1 / 2”. If following the standard practice specified in the drawings, the corresponding pipes would need to be machined during the pipe calibration stage. However, the inconsistent pipe lengths and shapes (including straight and bent pipes) cause inconvenience for both workshop construction and thread machining. Therefore, this paper proposes a high-precision sounding method for unmanned surface vessels using multi-beam data intelligent correction. Summary of the Invention

[0004] The purpose of this invention is to provide a high-precision depth sounding method for unmanned vessels using intelligent correction of multi-beam data, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-precision depth sounding method for unmanned surface vessels using multi-beam data intelligent correction, comprising the following steps: S1: Material preparation: Select appropriate pipe materials according to the specifications and requirements of the marine depth sounding self-closing valve; S2: Pipe cutting, using cutting equipment to cut pipes of different models, with uniform cutting length; S3: Beveling preparation, using a beveling machine to prepare a bevel at one end of the cut pipe; S4: Machining threaded joints. Based on the specifications of the depth-measuring self-closing valve, a suitable thread is machined on the outer wall of the other end of the cut pipe to produce various threaded joints with different diameters and uniform lengths. S5: Modify the cutting list. During the drawing breakdown stage, for straight pipes that require threads, adjust the cutting length in the cutting list, subtract the length of the threaded joint to compensate for the length of the threaded joint, and indicate the added bevel information. S6: Adjust the size of the bend. For bends that require threads, in addition to modifying the blanking length, the feed size of the bend also needs to be adjusted on the drawing to ensure that the overall size of the bend remains accurate after the threaded joint is installed. S7: Threaded joint welding, welding a straight or bent pipe to a pre-made threaded joint; S8: Weld inspection. After the marine sounding pipe is butt-welded to the pre-fabricated threaded joint, inspection is required to ensure the reliability of the weld. S9: Sounder inspection. This involves inspecting the sounder to ensure that its quality and function meet the requirements of the ship's systems.

[0006] As a further explanation of the present invention, in S1, after selecting the pipe, the pipe is subjected to preliminary grinding to remove impurities such as burrs, rust, and oil stains from the surface of the pipe, so as to ensure the smoothness and flatness of the pipe surface for subsequent processing and connection.

[0007] As a further explanation of the present invention, in S2, the uniform cutting length of the pipe is 50mm.

[0008] As a further explanation of the present invention, when preparing the S3 bevel, a bevel is made at one end of the threaded joint and at the connection end between the sounding pipe and the threaded joint.

[0009] As a further explanation of the present invention, the bevel is a V-shaped bevel with a bevel angle of 45 degrees to 60 degrees.

[0010] As a further explanation of the present invention, in the S4 machining threaded joint, after the thread machining is completed, the thread is deburred and polished.

[0011] As a further explanation of the present invention, in S5 and S6, the straight and bent pipes of the depth sounding tube are cut according to the modified cutting list.

[0012] As a further explanation of the present invention, after the straight and bent pipes of the sounding tube are cut into shape, a pre-welding treatment is performed to clean the welding surface.

[0013] As a further explanation of the present invention, in S7, the welding surfaces of the threaded joint and the straight and bent pipes of the sounding pipe are preheated before welding the threaded joint.

[0014] As a further explanation of the present invention, in S8, when inspecting the weld, the first step is a visual inspection. Construction personnel or quality inspectors will carefully examine the weld for obvious defects, such as cracks, porosity, dents, or overflows. Simultaneously, the weld shape and dimensions are checked to ensure they meet standard requirements before non-destructive testing is performed.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention, through improvements, transforms the threaded depth sounding pipe designed in the drawings into a direct connection between the threaded joint and the pipe, simplifying the manufacturing process. The threaded joint is made as a standard part, thus unaffected by the shape of the pipe in the design drawings. This allows for earlier production preparation, reduces the difficulty of process operations, and improves pipe manufacturing efficiency. Attached Figure Description

[0016] Figure 1 This is a process flow diagram of a high-precision depth sounding method for unmanned vessels using multi-beam data intelligent correction according to the present invention. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] Please see Figure 1 This invention provides a technical solution: a high-precision depth sounding method for unmanned surface vessels using intelligent multi-beam data correction, comprising the following steps: S1: Material preparation. Select appropriate pipe materials according to the specifications and requirements of the marine sounding self-closing valve. Selecting appropriate materials is the foundation for ensuring the quality and function of the sounding pipe. Ensure that the sounding pipe has sufficient strength, corrosion resistance, and durability.

[0019] S2: Pipe cutting. Different pipe models are cut using a cutting device to ensure uniform cutting lengths. The cutting device precisely cuts different pipe models; in this embodiment, the cutting length is ensured to be uniformly 50mm. This prepares for subsequent processing of threaded joints and connections with other components, obtaining pipe segments of uniform length for easier subsequent processing and assembly. S3: Beveling preparation, using a beveling machine to prepare a bevel at one end of the cut pipe; beveling helps the molten metal flow better during welding, improves welding quality, and ensures the strength and sealing of the weld joint; S4: Machining threaded joints. Based on the specifications of the sounding self-closing valve, a suitable thread is machined on the outer wall of the other end of the cut pipe to produce various threaded joints with different diameters and uniform lengths; this facilitates the connection and fixation of the sounding pipe with other components, and enables a reliable connection between the sounding pipe and components such as the self-closing valve.

[0020] S5: Modify the cutting list. During the drawing breakdown stage, for straight pipes that require threading, adjust the cutting length in the cutting list, subtract the length of the threaded joint to compensate for the length of the threaded joint, and indicate the added bevel information; ensure that the length and dimensions of the final assembled depth sounding pipe meet the design requirements, improve production efficiency and product quality. The pipe length can be adjusted directly during the production process according to the actual situation, but attention should be paid to accuracy and consistency. S6: Adjust the size of the bend. For bends that require threads, in addition to modifying the blanking length, the feed size of the bend also needs to be adjusted on the drawing to ensure that the overall size of the bend remains accurate after the threaded connector is installed; ensure that the bend still meets the design requirements after the threaded connector is connected, and improve the accuracy and reliability of the product. S7: Threaded joint welding, which involves butt-welding a straight or bent pipe to a pre-fabricated threaded joint; achieving a reliable connection between the sounding pipe and the threaded joint, improving the overall strength and sealing performance of the product. A special sealant or adhesive, such as thread sealant, is applied to the threaded connection to fill the tiny gaps between the threads, forming a soft sealing layer that effectively prevents the penetration of liquids, gases, or impurities. S8: Weld inspection. After the marine sounding pipe is butt-welded to the pre-fabricated threaded joint, inspection is required to ensure the reliability of the weld; ensure that the strength and sealing of the weld joint meet the standard requirements. Visual inspection or other non-destructive testing methods can be used. S9: Sounder Inspection. This involves inspecting the sounder to ensure that its quality and functionality meet the requirements of the ship's systems, thereby improving the product's reliability and service life.

[0021] In step S1, after selecting the pipe material, it undergoes preliminary grinding to remove burrs, rust, oil, and other impurities from the pipe surface, ensuring a smooth and flat surface for subsequent processing and connection. Grinding can be done using tools such as sandpaper, grinding wheels, and wire brushes, or automated processing can be performed using a professional pipe grinding machine. Alternatively, cleaning media such as detergents, alcohol, and water can be used to clean the pipe through soaking, rinsing, and wiping. For pipes with special requirements, advanced cleaning technologies such as ultrasonic cleaning can also be used.

[0022] In S2, the standard cutting length for pipes is 50mm. This standardized length makes the pipes easier to identify, classify, and store. In automated or semi-automated production lines, using standard-length pipes can significantly improve production efficiency because machines can more easily adapt to this size. For projects requiring the installation of multiple pipe sections, using standard-length pipes can reduce installation time and complexity.

[0023] When preparing the S3 bevel, a bevel is made at one end of the threaded joint, and a bevel is also made at the connection end between the sounding pipe and the threaded joint.

[0024] The bevel is a V-groove with an angle of 45-60 degrees. The bevel angle also affects the shape and stability of the welding arc. Changes in the bevel angle cause the arc shape to shift vertically, thus affecting the distance between the arc and the base material, and the penetration depth of the arc into the bevel root. Based on practical welding experience and experimental results, the ideal bevel angle for achieving optimal weld quality is 45-60 degrees. Bevel angles within this range ensure sufficient strength and good weld formation in the welded joint.

[0025] In S4 threaded joint machining, after the threads are machined, they are deburred and polished. This step helps ensure the smoothness of the threaded joint and reduces potential damage during connection.

[0026] In S5 and S6, the straight and bent pipes of the depth sounding tube are cut according to the revised cutting list.

[0027] After the straight and bent sounding tubes are cut to size, pre-welding treatment is performed, including cleaning the welding surfaces. Use sandpaper, wire brushes, and other tools to remove oil, rust, and other impurities from the cut surfaces and welding areas of the sounding tube, ensuring the welding surfaces are clean and dry. Position the sounding tube to the threaded joint and clamp it securely using jigs or other tools. Ensure that no movement or deformation occurs during the welding process.

[0028] Before welding threaded joints in S7, the welding surfaces of the threaded joints, as well as the straight and bent pipes of the sounding pipe, are preheated. Preheating helps reduce welding stress and the formation of cracks.

[0029] In S8, the first step in inspecting welds is a visual inspection. Construction workers or quality inspectors carefully examine the welds for obvious defects such as cracks, porosity, dents, or overflows. They also check whether the weld shape and dimensions meet standard requirements before proceeding with non-destructive testing (NDT). Common NDT methods include: Ultrasonic Testing (UT): Uses ultrasonic beams to penetrate the weld. If defects such as cracks or pores are present, the signal is reflected back and captured by a detector. X-ray Inspection: Utilizes X-rays to penetrate the weld. Different densities of materials absorb X-rays differently, creating an image that reveals the internal structure of the weld. Magnetic Particle Inspection (MT): Used to detect surface and shallow defects, especially cracks. It relies on the accumulation of magnetic particles at the defect location to indicate the problem. Penetrant Testing: Suitable for detecting surface-opening defects such as cracks and fissures. A penetrant is applied to a cleaned surface, seeping into the defect. A developer is then used to reveal the location and shape of the defect.

[0030] For sounding pipes requiring a certain pressure resistance, pressure testing can be performed to verify the sealing and strength of the welds. This involves pressurizing the system to the design pressure or higher and maintaining it for a period of time, observing for any pressure drop or signs of leakage. For applications where leakage is a concern, leak testing can be used. This may involve using foaming agents, sniffing agents, or submerging the entire system in water to observe for bubble formation, thus detecting leak points. Dimensional measurements and angular checks: Use measuring tools and instruments to check the dimensions and shape of the welded components to ensure they meet the requirements of technical drawings and standards. Hardness testing of the weld area is performed to assess the impact of heat treatment and welding processes on the material hardness. In some sounding pipe applications, it may be necessary to evaluate the corrosion resistance of the weld area, especially on vessels used in harsh environments. If problems are found during non-destructive testing, it may be necessary to open the weld for fracture analysis, a destructive testing method used to analyze the nature and cause of welding defects in detail.

[0031] In summary, after completing the above testing steps, the construction team can have a comprehensive understanding of the reliability of the welding and sealing, and ensure that the marine sounding pipe meets safety and functional requirements.

[0032] This invention, through improvements, transforms the threaded depth sounding pipe designed in the drawings into a direct connection between the threaded joint and the pipe, simplifying the manufacturing process. The threaded joint is made as a standard part, thus unaffected by the shape of the pipe in the design drawings. This allows for earlier production preparation, reduces the difficulty of process operations, and improves pipe manufacturing efficiency.

[0033] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A high-precision depth sounding method for unmanned surface vessels using intelligent multi-beam data correction, characterized in that: Includes the following steps: S1: Material preparation: Select appropriate pipe materials according to the specifications and requirements of the marine depth sounding self-closing valve; S2: Pipe cutting, using cutting equipment to cut pipes of different models, with uniform cutting length; S3: Beveling preparation, using a beveling machine to prepare a bevel at one end of the cut pipe; S4: Machining threaded joints. Based on the specifications of the depth-measuring self-closing valve, a suitable thread is machined on the outer wall of the other end of the cut pipe to produce various threaded joints with different diameters and uniform lengths. S5: Modify the cutting list. During the drawing breakdown stage, for straight pipes that require threads, adjust the cutting length in the cutting list, subtract the length of the threaded joint to compensate for the length of the threaded joint, and indicate the added bevel information. S6: Adjust the size of the bend. For bends that require threads, in addition to modifying the blanking length, the feed size of the bend also needs to be adjusted on the drawing to ensure that the overall size of the bend remains accurate after the threaded joint is installed. S7: Threaded joint welding, welding a straight or bent pipe to a pre-made threaded joint; S8: Weld inspection. After the marine sounding pipe is butt-welded to the pre-fabricated threaded joint, inspection is required to ensure the reliability of the weld. S9: Sounder inspection. This involves inspecting the sounder to ensure that its quality and function meet the requirements of the ship's systems.

2. The high-precision depth sounding method for unmanned surface vessels with intelligent multi-beam data correction according to claim 1, characterized in that: In S1, after selecting the pipe, the pipe undergoes preliminary grinding to remove burrs, rust, oil, and other impurities from the pipe surface, ensuring the smoothness and flatness of the pipe surface for subsequent processing and connection.

3. The high-precision depth sounding method for unmanned surface vessels with intelligent multi-beam data correction according to claim 1, characterized in that: In S2, the standard cutting length for pipes is 50mm.

4. The high-precision depth sounding method for unmanned surface vessels with intelligent multi-beam data correction according to claim 1, characterized in that: When preparing the S3 bevel, a bevel is made at one end of the threaded joint, and a bevel is also made at the connection end between the sounding pipe and the threaded joint.

5. The high-precision depth sounding method for unmanned surface vessels with intelligent multi-beam data correction according to claim 4, characterized in that: The bevel is a V-shaped bevel with a bevel angle of 45 degrees to 60 degrees.

6. The high-precision depth sounding method for unmanned surface vessels with intelligent multi-beam data correction according to claim 1, characterized in that: In S4 threaded joint machining, after the thread machining is completed, the thread is deburred and polished.

7. The high-precision depth sounding method for unmanned surface vessels with intelligent multi-beam data correction according to claim 1, characterized in that: In S5 and S6, the straight and bent pipes of the depth sounding tube are cut according to the revised cutting list.

8. The high-precision depth sounding method for unmanned surface vessels with intelligent multi-beam data correction according to claim 7, characterized in that: After the straight and bent pipes of the sounding tube are cut into shape, pre-welding treatment is carried out, and the welding surface is cleaned.

9. The high-precision depth sounding method for unmanned surface vessels with intelligent multi-beam data correction according to claim 1, characterized in that: Before welding the threaded joint in S7, the welding surfaces of the threaded joint and the straight and bent pipes of the sounding pipe are preheated.

10. The high-precision depth sounding method for unmanned surface vessels with intelligent multi-beam data correction according to claim 1, characterized in that: In S8, the first step in inspecting welds is a visual inspection. Construction workers or quality inspectors carefully examine the welds for obvious defects such as cracks, porosity, dents, or overflows. They also check whether the weld shape and dimensions meet standard requirements before proceeding with non-destructive testing.

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