A method for checking the installation accuracy of a hull section pipe

Abstract

The present application relates to the ship technology field, disclose a kind of hull section pipe installation precision inspection method, including according to hull section design parameter production hull section pipe installation precision inspection table, hull section pipe installation precision inspection table includes the positioning parameter of hull section pipe.Comparison is measured to the hull section of processing completion, determines the actual position parameter of hull section pipe.Comparison is compared with the actual position parameter of hull section pipe to the positioning parameter of hull section pipe, whether the installation precision of each pipe of hull section reaches design requirement is judged.The hull section pipe installation precision inspection method provided by the present application can effectively improve the efficiency of hull section pipe installation precision inspection.

Description

TECHNICAL FIELD

[0001] The present application relates to the shipbuilding technical field, in particular to a method for checking installation accuracy of a hull section pipe. BACKGROUND

[0002] In the process of shipbuilding, a large number of pipes need to be pre-installed on the section, and after the pre-installation of the pipes on the section is completed, the pipes are hoisted and carried to the corresponding section for jointing, and the installation accuracy of the pipes at the jointing opening directly affects whether the subsequent pipe system can be smoothly jointed and whether interference between the pipes occurs during hoisting, thereby affecting hoisting. Therefore, it is necessary to measure the installation accuracy of the pipes at the jointing opening to ensure that the installation accuracy meets the requirements.

[0003] Currently, the installation accuracy of the pipe system is checked according to the installation drawing and the ticket drawing. The three-dimensional coordinates are given on the pipe system installation drawing for pipe installation with the ribs, centerline and deck as reference objects. Due to the limitations of the site construction conditions, the reference objects corresponding to the three-dimensional coordinates cannot be directly used during the pipe installation process. Therefore, the three-dimensional coordinates are usually converted into positioning distances that can be directly used in construction, and the three-dimensional coordinate distances are converted into the distances of the nearest ship structure of the pipe. Then, the installation accuracy of the pipe is determined by the distance from the pipe to the ship structure (including the wall plate, bulb flat steel, inner plate, main deck, etc.). However, the three-dimensional coordinate conversion process is complex. If the three-dimensional coordinates are used as the content of the pipe system installation accuracy check, each pipe corresponds to a ticket drawing (including the installation coordinates and size information of the pipe, etc.). The process is too complex, the efficiency is too low, and it cannot meet the current production rhythm. Therefore, after the pipe system is pre-installed, a large number of pipes with poor installation accuracy flow into the next process without being checked, and the problems are exposed during the subsequent carrying or general assembly stage construction process, resulting in rework. The rectification work is complex, difficult and difficult to construct. If the installation accuracy deviation is too large, the pipe code or pipe support needs to be removed, and the pipe needs to be replaced. At the same time, re-welding and polishing are required, which consumes a large amount of labor cost.

[0004] Therefore, a section pipe installation accuracy check table is needed to improve the measurement efficiency and ensure that the installation accuracy of the pipe meets the installation requirements.

[0005] Currently, the pipe installation positioning check method is as follows: the three-dimensional coordinates (X, Y, Z are converted into FR, CL and H respectively) of the section structure are determined according to the installation drawing of the pipe. Figure 1As shown, the three-dimensional coordinates of the pipe AP 254-9 pipe orifice are shown, if the installation accuracy is to be checked, the corresponding hull structure wall plates of FR85, CL, 8H are found, and then taking these wall plates as the reference, the perpendicular distance between X, Y, Z is measured, and then compared with -387, -15490, 460 respectively, so as to judge the installation accuracy of the piping system), find the reference structure, and then calculate the distance of the pipe corresponding to the installation structure according to the three-dimensional coordinates of the pipe ticket picture, the distance of the pipe corresponding to the installation structure in the three directions of length, width and height needs to be calculated, and then the distances in the three directions are measured one by one.

[0006] Problems existing in the prior installation method:

[0007] 1. Several installation drawings are needed for one hull structure section, and the number of ticket pictures is dozens to hundreds (one pipe corresponds to one ticket picture), and it takes a lot of time to pick out the pipe ticket to be checked.

[0008] 2. The distance of the pipe relative to the hull structure cannot be directly observed, and the installation drawing and the ticket picture need to be used for conversion, and the hull structure corresponding to different pipes is also different, and the detection process is too complex and the practicability is too poor.

[0009] Therefore, a hull section pipe installation accuracy checking method is needed to solve the above problems. SUMMARY

[0010] The purpose of the present application is to provide a hull section pipe installation accuracy checking method to improve the hull section pipe accuracy checking efficiency.

[0011] To achieve this purpose, the present application adopts the following technical scheme:

[0012] A hull section pipe installation accuracy checking method, comprising:

[0013] A hull section pipe installation accuracy checking table is made according to the hull section design parameters, and the hull section pipe installation accuracy checking table includes the positioning parameters of the hull section pipe;

[0014] The positioning parameters of the hull section pipe include: the first positioning distance of each pipe at the front end of the hull section along the first direction relative to the first positioning reference surface, the second positioning distance along the second direction relative to the second positioning reference surface, and the third positioning distance along the third direction relative to the third positioning reference surface, and also include the fourth positioning distance of each pipe at the rear end of the hull section along the first direction relative to the fourth positioning reference surface, the fifth positioning distance along the second direction relative to the fifth positioning reference surface, and the sixth positioning distance along the third direction relative to the sixth positioning reference surface;

[0015] The first direction is a fore-aft direction of the hull section, the second direction is a left-right direction of the hull section, and the third direction is a height direction of the hull section.

[0016] The actual position parameters of the hull section pipes are determined by measuring the completed hull section, and the actual position parameters of the hull section pipes include: first measurement distances of the pipes at the front end of the hull section along the first direction from the first positioning reference surface, second measurement distances along the second direction from the second positioning reference surface, and third measurement distances along the third direction from the third positioning reference surface, and also include fourth measurement distances of the pipes at the rear end of the hull section along the first direction from the fourth positioning reference surface, fifth measurement distances along the second direction from the fifth positioning reference surface, and sixth measurement distances along the third direction from the sixth positioning reference surface.

[0017] The installation precision of the hull section pipes is determined by comparing the positioning parameters of the hull section pipes with the actual position parameters of the hull section pipes.

[0018] As an improvement of the above technical solution, the hull section pipe installation precision check table further includes numbers of the pipes at the front end of the hull section and numbers of the pipes at the rear end of the hull section.

[0019] As an improvement of the above technical solution, the hull section pipe installation precision check table further includes hull section front view Figure 2 drawings and hull section rear view Figure 2 drawings, hull section front view Figure 2 drawings, hull section rear view Figure 2 drawings, hull section rear view

[0020] As an improvement of the above technical solution, the hull section front view Figure 2 drawings further mark pipe diameters of the pipes at the front end of the hull section, and the hull section rear view Figure 2 drawings further mark pipe diameters of the pipes at the rear end of the hull section.

[0021] As an improvement of the above technical solution, the hull section pipe installation precision check table is made according to design parameters of the hull section, including:

[0022] A three-dimensional model of the hull section is established in three-dimensional software according to the design parameters of the hull section;

[0023] The hull section front view Figure 2 drawings and the hull section rear view Figure 2 drawings are established through the three-dimensional model of the hull section, and the hull section front view Figure 2 drawings and the hull section rear view Figure 2 drawings are marked on.

[0024] As the improvement of the above technical scheme, the first positioning reference surface is the end face of the front end of the hull section, the fourth positioning reference surface is the end face of the rear end of the hull section, the second positioning reference surface is the side face of the vertical structure wall plate of the front end of the hull section, the fifth positioning reference surface is the side face of the vertical structure wall plate of the rear end of the hull section, the third positioning reference surface is the side face of the horizontal structure wall plate of the front end of the hull section, and the sixth positioning reference surface is the horizontal structure wall plate of the rear end of the hull section.

[0025] As the improvement of the above technical scheme, the hull section pipe installation precision checking table comprises a first checking table and a second checking table, the first positioning distance of each pipe of the front end of the hull section along the first direction and the fourth positioning distance of each pipe of the rear end of the hull section along the first direction are marked on the first checking table, and the second positioning distance of each pipe of the front end of the hull section along the second direction, the third positioning distance of each pipe of the front end of the hull section along the third direction, the fifth positioning distance of each pipe of the rear end of the hull section along the second direction, and the sixth positioning distance of each pipe of the rear end of the hull section along the third direction are marked on the second checking table.

[0026] As the improvement of the above technical scheme, the positioning parameters of the hull section pipes are compared with the actual position parameters of the hull section pipes to determine whether the installation precision of each pipe of the hull section meets the design requirements, comprising:

[0027] The first deviation value between the first positioning distance of each pipe of the front end of the hull section and the first measured distance, the second deviation value between the second positioning distance and the second measured distance, and the third deviation value between the third positioning distance and the third measured distance are calculated to determine whether the first deviation value, the second deviation value and the third deviation value of each pipe of the front end of the hull section exceed the design deviation range.

[0028] The fourth deviation value between the fourth positioning distance of each pipe of the rear end of the hull section and the fourth measured distance, the fifth deviation value between the fifth positioning distance and the fifth measured distance, and the sixth deviation value between the sixth positioning distance and the sixth measured distance are calculated to determine whether the fourth deviation value, the fifth deviation value and the sixth deviation value of each pipe of the rear end of the hull section exceed the design deviation range.

[0029] Compared with the prior art, the present application has the following advantages:

[0030] The ship body section pipe installation precision inspection method of the present application converts the three-dimensional coordinates of the ship body section pipe system precision positioning into positioning distances to the first positioning reference surface, the second positioning reference surface, the third positioning reference surface, the fourth positioning reference surface, the fifth positioning reference surface and the sixth positioning reference surface. By measuring the processed ship body section, the measurement distances corresponding to the positioning distances can be obtained, so that by comparing the positioning distances and the measurement distances, it can be judged whether the installation precision of each terminal meets the requirements. The first positioning reference surface, the second positioning reference surface and the third positioning reference surface are used as the three-dimensional positioning reference surfaces of the pipes at the front end of the ship body section, and the fourth positioning reference surface, the fifth positioning reference surface and the sixth positioning reference surface are used as the three-dimensional positioning reference surfaces of the pipes at the rear end of the ship body section, which greatly reduces the number of positioning reference surfaces, is beneficial to improving the ship body section pipe precision inspection efficiency, and makes the positioning parameters of each pipe can be uniformly marked on the ship body section pipe installation precision inspection table, so that the positioning parameters are more intuitive, facilitating the inspection operation, and further improving the ship body section pipe precision inspection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic diagram of the first inspection table provided by the embodiment of the present application;

[0032] Figure 2 is a schematic diagram of the second inspection table provided by the embodiment of the present application.

[0033] In the drawings:

[0034] 10, overall front view of the ship body section; 101, local enlarged view of the pipe system area at the front end of the ship body section;

[0035] 20, overall rear view of the ship body section; 201, local enlarged view of the pipe system area at the rear end of the ship body section. DETAILED DESCRIPTION

[0036] The specific embodiments of the present application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0037] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature is "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0039] In the description of the present embodiment, the terms "upper", "lower", "right", and the like orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0040] As shown in Figure 1 The present embodiment provides a ship body section pipe installation precision checking method for checking the installation precision of each pipe on the ship body section, comprising:

[0041] A ship body section pipe installation precision checking table is made according to the design parameters of the ship body section, and the ship body section pipe installation precision checking table includes the positioning parameters of the ship body section pipe;

[0042] The positioning parameters of the ship body section pipe include the first positioning distance of each pipe at the front end of the ship body section along the first direction from the first positioning reference surface, the second positioning distance along the second direction from the second positioning reference surface, and the third positioning distance along the third direction from the third positioning reference surface, and also include the fourth positioning distance of each pipe at the rear end of the ship body section along the first direction from the fourth positioning reference surface, the fifth positioning distance along the second direction from the fifth positioning reference surface, and the sixth positioning distance along the third direction from the sixth positioning reference surface;

[0043] The first direction is the front-rear direction of the ship body section, the second direction is the left-right direction of the ship body section, and the third direction is the height direction (i.e. the up-down direction) of the ship body section;

[0044] The actual position parameters of the hull section pipes are determined by measuring the hull section, and the actual position parameters of the hull section pipes include: first measurement distances of each pipe at the front end of the hull section from the first positioning reference surface along a first direction, second measurement distances from the second positioning reference surface along a second direction, and third measurement distances from the third positioning reference surface along a third direction; and fourth measurement distances of each pipe at the rear end of the hull section from the fourth positioning reference surface along the first direction, fifth measurement distances from the fifth positioning reference surface along the second direction, and sixth measurement distances from the sixth positioning reference surface along the third direction.

[0045] The installation precision of the hull section pipes is determined by comparing the positioning parameters of the hull section pipes with the actual position parameters of the hull section pipes.

[0046] The installation precision of the hull section pipes is determined by comparing the positioning parameters of the hull section pipes with the actual position parameters of the hull section pipes. The three-dimensional coordinates of the hull section pipe precision positioning are converted into positioning distances from the first positioning reference surface, the second positioning reference surface, the third positioning reference surface, the fourth positioning reference surface, the fifth positioning reference surface, and the sixth positioning reference surface. By measuring the processed hull section, the measurement distances corresponding to the positioning distances can be obtained, so that the installation precision of each terminal can be determined by comparing the positioning distances and the measurement distances. In the embodiment, the first positioning reference surface, the second positioning reference surface, and the third positioning reference surface are used as the three-dimensional positioning reference surfaces of the pipes at the front end of the hull section, and the fourth positioning reference surface, the fifth positioning reference surface, and the sixth positioning reference surface are used as the three-dimensional positioning reference surfaces of the pipes at the rear end of the hull section, which greatly reduces the number of positioning reference surfaces, improves the efficiency of the hull section pipe precision inspection, and enables the positioning parameters of the pipes to be uniformly marked on the hull section pipe installation precision inspection table, making the positioning parameters more intuitive and facilitating the inspection operation, thereby further improving the efficiency of the hull section pipe precision inspection.

[0047] Further, the hull section pipe installation precision inspection table further includes the numbers of the pipes at the front end of the hull section and the numbers of the pipes at the rear end of the hull section, which facilitates the identification of the pipes and further facilitates the inspection operation.

[0048] Further, the hull section pipe installation precision inspection table further includes hull section front view drawings and hull section rear view drawings. Figure 2 Further, the hull section pipe installation precision inspection table further includes hull section front view drawings and hull section rear view drawings. Figure 2 Further, the hull section pipe installation precision inspection table further includes hull section front view drawings and hull section rear view drawings. Figure 2 Further, the hull section pipe installation precision inspection table further includes hull section front view drawings and hull section rear view drawings. Figure 2 Further, the hull section pipe installation precision inspection table further includes hull section front view drawings and hull section rear view drawings. Figure 2 Further, the hull section pipe installation precision inspection table further includes hull section front view drawings and hull section rear view drawings. Figure 2The two-dimensional drawing makes the positions of the pipes and the positioning parameters more intuitive, and facilitates the operator to quickly obtain and compare the positioning information, and also facilitates the operator to find the corresponding pipes and positioning reference surfaces on the processed hull section by referring to the two-dimensional drawing.

[0049] Further, the hull section front view Figure 2 The two-dimensional drawing also marks the pipe diameters of the pipes at the front end of the hull section, and the hull section rear view Figure 2 The two-dimensional drawing also marks the pipe diameters of the pipes at the rear end of the hull section. In the embodiment, the second positioning distance, the third positioning distance, the fifth positioning distance and the sixth positioning distance are all distances from the center of the pipe end face to the positioning reference surface.

[0050] In the embodiment, the hull section front view Figure 2 The two-dimensional drawing includes a hull section overall front view 10 and a hull section front end piping area local enlarged view 101. The hull section overall front view 10 of a certain hull section is also the front view of the hull section. The hull section front end piping area local enlarged view 101 is a local enlarged view of the area provided with pipes on the hull section overall front view 10. The hull section rear view Figure 2 The two-dimensional drawing includes a hull section overall rear view 20 and a hull section rear end piping area local enlarged view 201. The hull section overall rear view 20 of a certain hull section is also the rear view of the hull section. The hull section rear end piping area local enlarged view 201 is a local enlarged view of the area provided with pipes on the hull section overall rear view 20.

[0051] Optionally, the first positioning reference surface is the end face of the hull section front end closing opening, the fourth positioning reference surface is the end face of the hull section rear end closing opening, the second positioning reference surface is the side face of the hull section front end vertical structural wall plate (i.e. the structural wall plate extending in the vertical direction), the fifth positioning reference surface is the side face of the hull section rear end vertical structural wall plate, the third positioning reference surface is the side face of the hull section front end horizontal structural wall plate (i.e. the structural wall plate extending in the horizontal direction), and the sixth positioning reference surface is the hull section rear end horizontal structural wall plate. The vertical structural wall plate and the horizontal structural wall plate in the embodiment are both strong structural wall plates. The selection of the second positioning reference surface, the third positioning reference surface, the fifth positioning reference surface and the sixth positioning reference surface follows the principle of “proximity and strong structural wall plate as reference”. “Proximity” means relatively close to the piping, which is beneficial to the actual measurement on site and can reduce the measurement error to a certain extent. The strong structural wall plate is not easy to deform, and the relative measurement accuracy is more accurate. The accuracy of the piping in the ship length direction uses the closing opening of the section as the reference. The distances referred to in the embodiment are all clearances, and do not include the plate thickness. The plate thickness is not included, i.e. the side face of the structural wall plate close to the piping is used as the positioning reference surface, which is convenient for on-site measurement.

[0052] Optionally, the hull section pipe installation accuracy check table comprises a first check table and a second check table, the first positioning distance of each pipe at the front end of the hull section from the first positioning reference surface in the first direction and the fourth positioning distance of each pipe at the rear end of the hull section from the fourth positioning reference surface in the first direction are marked on the first check table, and the second positioning distance of each pipe at the front end of the hull section from the second positioning reference surface in the second direction, the third positioning distance of each pipe at the front end of the hull section from the third positioning reference surface in the third direction, the fifth positioning distance of each pipe at the rear end of the hull section from the fifth positioning reference surface in the second direction, and the sixth positioning distance of each pipe at the rear end of the hull section from the sixth positioning reference surface in the third direction are marked on the second check table.

[0053] Optionally, the positioning parameters of the hull section pipes are compared with the actual position parameters of the hull section pipes to determine whether the installation accuracy of each pipe of the hull section meets the design requirements, comprising:

[0054] The first deviation value between the first positioning distance of each pipe at the front end of the hull section and the first measured distance, the second deviation value between the second positioning distance and the second measured distance, and the third deviation value between the third positioning distance and the third measured distance are calculated to determine whether the first deviation value, the second deviation value, and the third deviation value of each pipe at the front end of the hull section exceed the design deviation range.

[0055] The fourth deviation value between the fourth positioning distance of each pipe at the rear end of the hull section and the fourth measured distance, the fifth deviation value between the fifth positioning distance and the fifth measured distance, and the sixth deviation value between the sixth positioning distance and the sixth measured distance are calculated to determine whether the fourth deviation value, the fifth deviation value, and the sixth deviation value of each pipe at the rear end of the hull section exceed the design deviation range. If there is a deviation value that exceeds the design deviation range, it is determined that the installation accuracy of the pipe does not meet the standard.

[0056] Optionally, the hull section pipe installation accuracy check table is made according to the design parameters of the hull section, comprising:

[0057] A three-dimensional model of the hull section is established in three-dimensional software according to the design parameters of the hull section. It should be noted that a three-dimensional model is generally made during the hull design stage, so the step of establishing a three-dimensional model is one of the steps in the hull design and construction, and therefore the establishment of a three-dimensional model does not increase the workload of the staff.

[0058] The front view drawing of the hull section and the rear view drawing of the hull section are established through the three-dimensional model of the hull section. Figure 2 Figure 2 The front view drawing of the hull section and the rear view drawing of the hull section are established through the three-dimensional model of the hull section. Figure 2 Figure 2 The front view drawing of the hull section and the rear view drawing of the hull section are established through the three-dimensional model of the hull section.

[0059] ​​The 3D software used in this embodiment is DACS (Dimensional & Accuracy Control System). In other embodiments, other types of 3D software may also be used.

[0060] In this embodiment, a front view of the hull section is established using a three-dimensional model of the hull section. Figure 2 3D drawings and rear views of hull sections Figure 2 3D drawings, front view of hull sections Figure 2 3D drawings and rear views of hull sections Figure 1 Markings on the dimensional drawings include:

[0061] S1. Import the hull section model into the DACS software.

[0062] S2. Clicking on the 2D view will bring up the 2D report options. Select the desired report based on your needs. After selecting the report template, click OK to complete the creation of the 2D view interface. Then click "Capture 2D Data" to extract a section of the 3D model into the 2D report in the 2D view for manipulation. For example, you can capture the overall rear view of the segment and pipe model (overall rear view of the hull segment 20). By using the drawing function area, you can edit various information on the 2D report. First, mark the direction of the 3D model capture and the coordinates of the length direction of the closure (the length direction of the hull segment) (e.g., rear view FR155-150). Then, enclose the pipe on the segment opening with a box and use detail... Figure 1 This refers to the area. Then details will follow. ​ The area is extracted separately from the 3D model and enlarged to a suitable size to form a partial enlarged view 201 of the piping system area at the rear of the hull section. Then, according to the drawings, the pipe number and diameter of each pipe in this area are marked, and the pipe is identified by the code A1, A2 (A represents the rear opening, 1 represents the pipe number, F represents the front opening, P represents the left opening, and S represents the right opening). Then, a table is drawn to mark the theoretical distance (various positioning distances) from the pipe opening to the section closure. Below the theoretical distance, there is a corresponding area for filling in the actual measurement data and deviation value. The actual measurement data (i.e., each measurement distance) and deviation value are the actual data filled in after actual measurement (deviation value = actual measurement data - theoretical data). The front and rear openings of the hull section are drawn in the same way.

[0063] S5. Add another two-dimensional report to mark the installation distance of the pipe in the width and height directions of the hull structure. In the 3D view, use the annotation function to mark the center of the pipe and the reference point of the structure in the width and height directions of the pipe (the selected hull structure wall panel must correspond to the vertical strong structural wall panel and the horizontal strong structural wall panel).

[0064] Then, the pipe center points and the structure reference points are marked on the two-dimensional report, and the distances between the pipe center points and the structure reference points are pulled by straight lines. The width and height directions are represented by two graphs respectively, and the data of the reference points are marked.

[0065] Through the above steps, the first check list and the second check list of the ship body section can be completed.

[0066] In summary, the embodiment of the present application provides a ship body section pipe installation precision checking method. The pipes to be checked and the structure wall plates serving as positioning reference surfaces can be found out directly through the comparison between the two-dimensional drawing on the ship body section pipe installation precision checking list and the actual object. The data can be directly measured and recorded. The installation precision of the pipes can be quickly judged by comparing the measured data (measured distance) with the theoretical data (positioning distance). The method is efficient and practical, and can accurately and effectively control the precision of the pipe system in the joint opening area. In addition, the ship body section pipe installation precision checking method provided by the embodiment can not only be used to check and control the installation precision of the pipes, but also can be used to assist in installing the pipes and improve the construction efficiency.

[0067] The above only describes the preferred embodiments of the present application. It should be noted that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application. These improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A method of inspecting the installation accuracy of a pipe in a ship body section, characterized by, The method comprises the following steps: According to the hull block design parameters, a hull block pipe installation precision check table is prepared, which includes the positioning parameters of the hull block pipes; The positioning parameters of the hull block pipes include the first positioning distance of each pipe at the front end of the hull block along the first direction from the first positioning reference surface, the second positioning distance along the second direction from the second positioning reference surface, and the third positioning distance along the third direction from the third positioning reference surface, and also include the fourth positioning distance of each pipe at the rear end of the hull block along the first direction from the fourth positioning reference surface, the fifth positioning distance along the second direction from the fifth positioning reference surface, and the sixth positioning distance along the third direction from the sixth positioning reference surface; The first direction is the front-rear direction of the hull block, the second direction is the left-right direction of the hull block, and the third direction is the height direction of the hull block; The actual position parameters of the hull block pipes are determined by measuring the processed hull block, which include the first measurement distance of each pipe at the front end of the hull block along the first direction from the first positioning reference surface, the second measurement distance along the second direction from the second positioning reference surface, and the third measurement distance along the third direction from the third positioning reference surface, and also include the fourth measurement distance of each pipe at the rear end of the hull block along the first direction from the fourth positioning reference surface, the fifth measurement distance along the second direction from the fifth positioning reference surface, and the sixth measurement distance along the third direction from the sixth positioning reference surface; The positioning parameters of the hull block pipes are compared with the actual position parameters of the hull block pipes to determine whether the installation precision of each pipe of the hull block meets the design requirements; The positioning parameters of the hull block pipes are compared with the actual position parameters of the hull block pipes to determine whether the installation precision of each pipe of the hull block meets the design requirements, which comprises: The first deviation value between the first positioning distance and the first measurement distance of each pipe at the front end of the hull block, the second deviation value between the second positioning distance and the second measurement distance, and the third deviation value between the third positioning distance and the third measurement distance are calculated to determine whether the first deviation value, the second deviation value, and the third deviation value of each pipe at the front end of the hull block exceed the design deviation range; The fourth deviation value between the fourth positioning distance and the fourth measurement distance of each pipe at the rear end of the hull block, the fifth deviation value between the fifth positioning distance and the fifth measurement distance, and the sixth deviation value between the sixth positioning distance and the sixth measurement distance are calculated to determine whether the fourth deviation value, the fifth deviation value, and the sixth deviation value of each pipe at the rear end of the hull block exceed the design deviation range.

2. The method of claim 1, wherein, The hull block pipe installation precision check table also includes the numbers of each pipe at the front end of the hull block and the numbers of each pipe at the rear end of the hull block.

3. The method of claim 2, wherein, The hull block pipe installation precision check table also includes a two-dimensional drawing of the front view of the hull block and a two-dimensional drawing of the rear view of the hull block, the numbers of each pipe at the front end of the hull block are marked on the two-dimensional drawing of the front view of the hull block, and the numbers of each pipe at the rear end of the hull block are marked on the two-dimensional drawing of the rear view of the hull block.

4. The method of claim 3, wherein The pipe diameters of each pipe at the front end of the hull block are also marked on the two-dimensional drawing of the front view of the hull block, and the pipe diameters of each pipe at the rear end of the hull block are also marked on the two-dimensional drawing of the rear view of the hull block.

5. The method of claim 4, wherein, The method comprises the following steps: According to the design parameters of the hull section, a three-dimensional model of the hull section is established in three-dimensional software; The front view and the rear view of the hull section are established by the three-dimensional model of the hull section, and the front view and the rear view are marked.

6. The method of claim 5, wherein, The first positioning reference surface is the front end of the hull section, the fourth positioning reference surface is the rear end of the hull section, the second positioning reference surface is the side of the vertical structure wall plate at the front end of the hull section, the fifth positioning reference surface is the side of the vertical structure wall plate at the rear end of the hull section, the third positioning reference surface is the side of the horizontal structure wall plate at the front end of the hull section, and the sixth positioning reference surface is the side of the horizontal structure wall plate at the rear end of the hull section.

7. The method of claim 1, wherein, The hull section pipe installation precision check table comprises a first check table and a second check table, the first positioning distance of each pipe at the front end of the hull section along the first direction and the fourth positioning distance of each pipe at the rear end of the hull section along the first direction are marked on the first check table, and the second positioning distance of each pipe at the front end of the hull section along the second direction, the third positioning distance of each pipe at the front end of the hull section along the third direction, the fifth positioning distance of each pipe at the rear end of the hull section along the second direction, and the sixth positioning distance of each pipe at the rear end of the hull section along the third direction are marked on the second check table.

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