Pipeline arrangement method and pipeline structure based on bent pipes

Abstract

The invention discloses a pipeline arrangement method and a pipeline structure based on bent pipes, and the method comprises the steps: S1, taking a room as a pipeline arrangement unit, recognizing all process pipelines in the room, and extracting the information of the process pipelines; s2, the inlet position and the outlet position of each process pipeline in the room are determined; s3, the minimum turning number of the process pipelines is determined according to the inlet positions and the outlet positions of the process pipelines; s4, sorting the elbow weights of the process pipelines according to the pipe diameter, wall thickness, grade, minimum bending radius and turning number information of each process pipeline; and S5, according to the bent pipe weight sorting, preferentially arranging the process pipeline with the bent pipe weight sorting in the front. The rooms are used as arrangement design units, the process pipelines in the rooms are comprehensively considered, the process pipelines can be bent as far as possible by using the bent pipes, and the utilization rate and benefits of the bent pipes are improved.

Description

Technical Field

[0001] The present invention particularly relates to a pipeline arrangement method and a pipeline structure based on bent pipes. Background Art

[0002] In nuclear power plants, pipe bends and elbows are two common means of changing the flow direction of process fluids. Compared with elbows, the weld settings of pipe bends are more flexible, which can effectively reduce the number of welds, thereby reducing the total number of welds in the project and reducing the amount of engineering installation. Although the use of pipe bends has the advantage of a larger number of welds, when layout designers are laying out the pipelines, the use of pipe bends is subject to greater space restrictions because pipe bends occupy a larger space while elbows occupy a smaller space. In particular, since a room involves multiple process pipelines and they are laid out by different designers, there is mutual influence between the pipelines.

[0003] At this time, it is difficult to use the bent pipe, resulting in a low utilization rate of the bent pipe.

[0004] In addition, the benefits of pipe bending are difficult to guarantee because different pipe diameters, different wall thicknesses, different grades, different minimum bending radii, whether in-service inspection is required, the number of turns, and other factors will affect the benefits and difficulty of pipe bending. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a pipe layout method and a pipe structure based on elbows in view of the above-mentioned deficiencies in the prior art. The room is used as a layout design unit. By comprehensively considering the process pipes in the room, the process pipes can be made to use elbows as turning points as much as possible, thereby improving the utilization rate and benefits of the elbows.

[0006] The technical solution of the present invention to solve the above technical problems is:

[0007] According to a first aspect of the present invention, there is provided a pipeline arrangement method based on an elbow, comprising:

[0008] S1, taking the room as the pipeline layout unit, identifies all process pipelines in the room and extracts process pipeline information;

[0009] S2, determine the inlet and outlet positions of each process pipeline in the room;

[0010] S3, determining the minimum number of turns of the process pipeline according to the inlet position and outlet position of each process pipeline;

[0011] S4, sorting the bend weights of the process pipelines according to the pipe diameter, wall thickness, grade, minimum bending radius, and number of bends of each process pipeline;

[0012] S5, according to the elbow weight ranking, the process pipelines with the highest elbow weight ranking are arranged first.

[0013] Preferably, the ranking of the elbow weights of the process pipelines is determined by hierarchical screening.

[0014] Preferably, the hierarchical screening includes:

[0015] Calculate the product of the pipe diameter and the minimum number of turns as the primary screening weight, and sort them from large to small according to the product value;

[0016] In the same primary screening weight, the pipeline grade is used as the secondary screening weight, and the pipeline grades are sorted from high to low;

[0017] In the same secondary screening weight, the minimum bending radius is used as the tertiary screening weight, and the minimum bending radius is sorted from small to large;

[0018] In the same three-level screening weight, wall thickness is used as the fourth-level screening weight, and the materials are sorted from large to small according to wall thickness.

[0019] Preferably, when sorting the bend weights of the process pipelines according to the pipe diameter, wall thickness, grade, minimum bending radius, and number of bends of each process pipeline, it also includes:

[0020] The elbow weights of process pipelines are sorted according to whether in-service inspection is required and whether the bends are at standard angles.

[0021] Preferably, the hierarchical screening further comprises:

[0022] In the same four-level screening weight, whether or not in-service inspection is required is used as the fifth-level screening weight, and the order is from no need for in-service inspection to need for in-service inspection;

[0023] In the same five-level screening weight, whether the turn is a standard angle is used as the sixth-level screening weight, and the order is from whether the turn is a standard angle to whether the turn is not a standard angle.

[0024] Preferably, the method further comprises the step of modifying the existing pipeline arrangement, comprising:

[0025] S6, according to the elbow weight ranking, the process pipelines with the highest elbow weight ranking are modified first. If there is a collision of items, the layout of the process pipelines with the highest ranking remains unchanged, and the layout of the process pipelines with the lowest ranking is modified.

[0026] According to a second aspect of the present invention, there is provided a pipeline structure, wherein the pipeline structure is arranged by using the method described above.

[0027] Beneficial effects:

[0028] The pipe arrangement method and pipe structure based on elbows of the present invention take rooms as arrangement design units, comprehensively consider the process pipes in the room according to the design information and inlet and outlet positions of the process pipes, prioritize the overall process pipes by calculating the elbow weights of the process pipes in the room and sorting them, and according to the arrangement principle that the higher the order, the higher the elbow benefit and the lower the elbow difficulty, when arranging the pipes and when modifying the existing pipe arrangement, the process pipes with the highest order are arranged first, and the elbows are arranged first, which can ensure that the process pipes with the highest order can use the elbows as turning points as much as possible, thereby improving the utilization rate and benefit of the elbows. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a pipeline arrangement method based on elbows according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the term "upper" and the like to indicate orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] The present invention discloses a pipeline arrangement method based on elbow pipes, comprising:

[0034] S1, taking the room as the pipeline layout unit, identifies all process pipelines in the room and extracts process pipeline information;

[0035] S2, determine the inlet and outlet positions of each process pipeline in the room;

[0036] S3, determining the minimum number of turns of the process pipeline according to the inlet position and outlet position of each process pipeline;

[0037] S4, sorting the bend weights of the process pipelines according to the pipe diameter, wall thickness, grade, minimum bending radius, and number of bends of each process pipeline;

[0038] S5, according to the elbow weight ranking, the process pipelines with the highest elbow weight ranking are arranged first.

[0039] Correspondingly, the present invention also discloses a pipeline structure, which is arranged by the method described above.

[0040] Example 1

[0041] This embodiment discloses a pipeline arrangement method based on elbows, such as Figure 1 As shown, including:

[0042] Step S1, using the room as a pipeline layout unit, identifying all process pipelines in the room, and extracting information of all process pipelines in the room, specifically including the pipe diameter, wall thickness, grade, minimum bending radius, number of turns, etc. of all process pipelines in the room.

[0043] Step S2, determining the inlet position (i.e., the position entering the room) and the outlet position (i.e., the position leaving the room) of each process pipeline in the room, wherein, for process pipelines arranged only in the room, their inlet position and outlet position are defined according to their actual positions.

[0044] Step S3, determining the minimum number of turns of the process pipeline according to the inlet position and outlet position of each process pipeline.

[0045] Step S4, sorting the elbow weights of the process pipelines according to the pipe diameter, wall thickness, grade, minimum bending radius, and number of bends of each process pipeline, wherein the higher the ranking, the greater the benefit of using the elbow. Designers should prioritize arranging the process pipelines with higher rankings as elbows based on the specific conditions of the room. In other words, the higher the ranking, the higher the priority for using elbows. However, whether the elbows can be used still requires the designer to make a judgment based on the specific conditions of the room, and the weight sorting is only auxiliary.

[0046] In some embodiments, the ranking of the elbow weights of the process pipeline is determined by hierarchical screening. Specifically, the hierarchical screening includes:

[0047] The first step is to calculate the product of the pipe diameter (inch diameter) and the minimum number of bends in the room as the first-level screening weight, and sort them from large to small according to the product value. Among them, since the biggest advantage of elbows compared to elbows is the reduction in the number of welds, the larger the product of pipe diameter and the minimum number of bends, the greater the reduction in welding workload caused by the reduction in the number of welds, and the priority is given to layout. For example, the minimum number of bends for a 10-inch process pipeline in a room is 2, and the minimum number of bends for a 6-inch pipeline is 4, then 6×4>10X2, that is, the weight of the bends of the 6-inch pipeline is greater, so the 6-inch pipeline is given priority.

[0048] The second step is to use the pipeline grade as the secondary screening weight in the same primary screening weight, and sort the pipelines from high to low by grade. The higher the pipeline grade, the higher the proportion of post-weld non-destructive testing and the more likely it is to need in-service inspection. In other words, the higher the pipeline grade, the more important the pipeline is, the more it needs to be inspected, and the priority is given to layout. For example, there are multiple pipelines with the same diameter in a room, and the minimum number of elbows is the same. These pipelines have the same primary screening weight, so they are sorted by pipeline grade, with grade 1 pipelines ranked first and non-nuclear grade pipelines ranked last, so grade 1 pipelines are arranged first;

[0049] The third step is to use the minimum bending radius as the third-level screening weight in the same secondary screening weight, and sort the pipes from small to large according to the minimum bending radius. The smaller the minimum bending radius, the easier it is to arrange the pipe bends, and they are arranged first. For example, if there are multiple pipes of the same grade and diameter in a room, and the number of minimum bending pipes is the same, and the secondary screening weights of these pipes are the same, they are sorted according to the minimum bending of the pipes. The smaller the minimum bending radius, the higher the ranking and the higher the priority.

[0050] The fourth step is to use wall thickness as the fourth-level screening weight in the same three-level screening weight, and sort them from large to small by wall thickness. The thicker the wall thickness, the easier it is to bend the pipe, and the easier it is to manufacture the pipe. The pipes should be arranged first. For example, there are multiple pipes of the same grade and diameter in a room, and the minimum number of bends and the minimum bending radius are the same. If the three-level screening weights of these pipes are the same, they should be sorted by pipe wall thickness. The thicker the pipe wall, the higher the ranking and the higher the priority.

[0051] In some embodiments, step S4, when sorting the bend weights of the process pipelines according to the pipe diameter, wall thickness, grade, minimum bending radius, and number of bends of each process pipeline, further includes:

[0052] The elbow weights of process pipelines are sorted according to whether in-service inspection is required and whether the bends are at standard angles.

[0053] Accordingly, the hierarchical screening further includes:

[0054] Step 5: In the same four-level screening weight, whether or not an in-service inspection is needed is used as the fifth-level screening weight, and the pipelines are sorted from those that need in-service inspection to those that do not. The higher the ranking of pipelines that need in-service inspection, the higher the priority of their layout;

[0055] The sixth step is to use whether the bend is a standard angle as the sixth-level screening weight in the same five-level screening weight. The pipes are sorted from non-standard angles to standard angles. The higher the non-standard angle pipes are ranked, the higher their priority will be.

[0056] Step S5, according to the weight sorting of the elbows, the process pipes with the highest elbow weight sorting are arranged first. Moreover, the higher the sorting, the greater the benefit of the elbow and the lower the difficulty, and the elbow is preferred for arrangement. However, whether the elbow can be used specifically still needs to be judged by the designer according to the situation of the room, and the weight sorting is only used as an auxiliary. For the remaining process pipes with the lowest sorting (i.e., the elbow weight is lower), they are arranged in the conventional way.

[0057] The pipe layout method based on elbows in this embodiment takes the room as the layout design unit, comprehensively considers the process pipes in the room according to the design information and the inlet and outlet positions of the process pipes, and prioritizes the overall process pipes by calculating the elbow weights of the process pipes in the room and ranking them. According to the layout principle that the higher the ranking, the higher the elbow benefit and the lower the elbow difficulty, when arranging the pipes, the process pipes with a higher ranking are given priority, and the elbows are given priority to be arranged, so as to ensure that the process pipes with a higher ranking can use elbows as turning points as much as possible, thereby improving the utilization rate and benefit of the elbows.

[0058] Example 2

[0059] This embodiment discloses a pipeline arrangement method based on elbows. Compared with the method described in Example 1, the difference is that the method of this embodiment also includes a step of modifying the existing pipeline arrangement, specifically including:

[0060] Step S6, when modifying the existing pipeline layout, the process pipelines with higher elbow weight rankings are modified first according to the elbow weight rankings, and the elbows are modified first. If a collision of items occurs after the elbow is replaced by an elbow, the layout of the process pipelines with higher rankings remains unchanged, and the layout of the process pipelines with lower rankings is modified, usually by modifying the direction of the pipelines to avoid collisions.

[0061] Compared with the method described in Example 1, the pipeline layout method based on elbows in this embodiment can also modify the existing pipeline layout. When modifying the existing pipeline layout, the layout of the process pipelines with a higher ranking is modified first, and the elbows are arranged first, which can ensure that the process pipelines with a higher ranking can use elbows as turning points as much as possible, thereby improving the utilization rate and benefits of the elbows.

[0062] Example 3

[0063] This embodiment discloses a pipe structure based on a bent pipe, and the pipe structure is arranged using the method described in Embodiment 1 or Embodiment 2.

[0064] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A pipeline layout method based on elbows, characterized in that: include: S1, taking the room as the pipeline layout unit, identifies all process pipelines in the room and extracts process pipeline information; S2, determine the inlet and outlet positions of each process pipeline in the room; S3, determining the minimum number of turns of the process pipeline according to the inlet position and outlet position of each process pipeline; S4, sorting the bend weights of the process pipelines according to the pipe diameter, wall thickness, grade, minimum bending radius, and number of bends of each process pipeline; S5, according to the elbow weight ranking, the process pipelines with the highest elbow weight ranking are arranged first.

2. The pipe arrangement method based on elbows according to claim 1, characterized in that: The ordering of the elbow weights of the process pipelines is determined by graded screening.

3. The pipe arrangement method based on elbows according to claim 2, characterized in that: The hierarchical screening includes: Calculate the product of the pipe diameter and the minimum number of turns as the primary screening weight, and sort them from large to small according to the product value; In the same primary screening weight, the pipeline grade is used as the secondary screening weight, and the pipeline grades are sorted from high to low; In the same secondary screening weight, the minimum bending radius is used as the tertiary screening weight, and the minimum bending radius is sorted from small to large; In the same three-level screening weight, wall thickness is used as the fourth-level screening weight, and the materials are sorted from large to small according to wall thickness.

4. The pipe arrangement method based on elbows according to claim 3, characterized in that: When sorting the bend weights of process pipelines according to the pipe diameter, wall thickness, grade, minimum bending radius, and number of bends of each process pipeline, it also includes: The elbow weights of process pipelines are sorted according to whether in-service inspection is required and whether the bends are at standard angles.

5. The pipe arrangement method based on elbows according to claim 4, characterized in that: The hierarchical screening also includes: In the same four-level screening weight, whether or not in-service inspection is required is used as the fifth-level screening weight, and the order is from no need for in-service inspection to need for in-service inspection; In the same five-level screening weight, whether the turn is a standard angle is used as the sixth-level screening weight, and the order is from whether the turn is a standard angle to whether the turn is not a standard angle.

6. The pipeline arrangement method based on elbows according to any one of claims 1 to 5, characterized in that: The method also includes a step of modifying the existing piping arrangement, including: S6, according to the elbow weight ranking, the process pipelines with the highest elbow weight ranking are modified first. If there is a collision of items, the layout of the process pipelines with the highest ranking remains unchanged, and the layout of the process pipelines with the lowest ranking is modified.

7. A pipeline structure, characterized in that: The pipeline structure is arranged by the method described in any one of claims 1-6.

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