CN110222476B - Intelligent optimization design method for pipeline laying and clamp arrangement overall optimization - Google Patents
Intelligent optimization design method for pipeline laying and clamp arrangement overall optimization Download PDFInfo
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Abstract
The invention discloses an intelligent optimization design method for integrally optimizing pipeline laying and clamp arrangement, which aims at the assembly constraint and design coupling relation of the pipeline laying and the clamp arrangement, and provides the following scheme, and the method comprises the following steps: s1, establishing a path mode based on a clamp based on the assembly constraint relation of a pipeline and the clamp; s2, carrying out integral coding on the number, the positions and the spatial pose expression parameters of the clamps, the pipe joint stretching out points, the clamp stretching out points and the path nodes, and establishing an integral coding expression mode of the pipeline and the clamps; s3, establishing a comprehensive evaluation function considering pipeline laying and clamp arrangement optimization design; s4, performing iterative computation by adopting intelligent optimization such as particle swarm optimization. The invention breaks through the serial design mode of the traditional pipeline laying and clamp arrangement, realizes the integral optimization of the pipeline laying and the clamp arrangement, can effectively improve the design quality of the complex equipment pipeline system and improves the design efficiency.
Description
Technical Field
The invention relates to the technical field of pipeline systems, in particular to an intelligent optimization design method for pipeline laying and clamp arrangement integral optimization.
Background
The design of the pipeline system of complex equipment is very critical to the whole system, and the pipeline system is required to be carefully planned and designed in engineering application whether aeroengines, ship design and manufacture or arrangement of oil and gas pipelines. The pipeline system not only refers to pipelines required to be laid by complex equipment, but also comprises pipeline components, connecting pieces of the pipeline components, a bracket, a clamp and the like. The piping system design includes a clip arrangement design in addition to piping laying. The good design of the pipeline system has very important significance for the stability and the safety of the whole system.
In order to improve the automation and the intelligent degree of the design of the complex equipment pipeline system, the scholars at home and abroad perform extensive theoretical exploration on the problem of automatic pipeline laying, and the proposed pipeline laying algorithm mainly comprises a maze method, a heuristic search algorithm, a graph theory method, intelligent optimization and other methods. On the other hand, in the aspect of clamp arrangement, the currently developed method generally adopts an intelligent optimization method such as a genetic algorithm and the like to optimally adjust the position of the clamp from the aspect of optimizing the vibration performance of the pipeline. Although the existing method respectively explores the problems of pipeline laying and clamp arrangement, for complex equipment such as an aeroengine, the existing method is still difficult to directly apply to engineering practice, and the main reason is that the pipeline laying and the clamp arrangement are respectively and independently carried out, and the assembly constraint relationship and the design coupling relationship of the pipeline and the clamp are not fully considered, so that repeated modification is often caused, and the overall optimization of the pipeline system design is difficult to ensure.
The invention has the innovation points that the common pipeline laying target and constraint are considered, and the clamp arrangement target and constraint are also considered at the same time, so that the integral optimization design of pipeline laying and clamp arrangement is realized, and the coupling influence of the pipeline laying and the clamp arrangement is further solved.
In the aspect of pipeline laying, the space for pipeline laying is quite complex due to the bulkiness of the system of the complex equipment. Is subject to constraints on the space available for equipment, such that the pipelaying design requires consideration of a number of factors. In the invention, the main laying target involved in the design problem of the complex equipment pipeline laying is that the pipeline laying length is as short as possible, so that the space is saved, the cost is reduced and the weight is reduced; the bending angle of the pipeline is maximum as much as possible, and the trend of the pipeline is smooth as much as possible so as to reduce the flow resistance. Meanwhile, the pipeline laying design also needs to meet engineering constraint, and in the invention, the related pipeline laying target constraint comprises: constraint 1: the pipeline laying must avoid the obstacles such as equipment accessories; constraint 2: the pipeline is laid to avoid the limiting areas such as an electric area, a designated maintenance area and the like as much as possible so as to improve the safety reliability of complex equipment and the maintainability of products;
in the aspect of clamp arrangement, reasonable clamp arrangement can well reduce pipeline system faults and improve the stability and vibration performance of a pipeline system, so the clamp arrangement is extremely important in the optimal design of the pipeline system. According to the engineering requirements of the clamp arrangement, the pipeline laying must be matched with the clamp arrangement, and the clamp arrangement must be in a designated area. Meanwhile, the number, the positions and the types of the clamps (such as duplex clamps, installation side clamps and the like) have great influence on the performance and the dynamics of a pipeline system. Therefore, in the design problem of the clamp arrangement of the complex equipment, various influencing factors are comprehensively considered, so that the clamp arrangement position is optimized. In the present invention, the optimization objective of the clip arrangement is that the clips and their supports are as few as possible to save material, reduce weight and simplify the assembly process. In the present invention, the clip arrangement constraints involved include: constraint 1: the clips cannot be arranged at will, and must be arranged in the allowed area, constraint 2: at least one clip is arranged within the prescribed length LS for improved pipeline performance. Constraint 3: the pipeline laying should be matched with the clamp arrangement so as to meet the engineering assembly requirement.
Taking a typical complex-equipped aircraft engine pipeline system as an example, pipeline laying and clamp arrangement need to meet respective design rules, and mutual influence and coupling relation exist. Coupling (Coupling) is understood in a broad sense to mean that there is a relationship between two elements or between multiple elements, and the interaction or interaction between the two elements. In the present invention, the existence of a coupling relationship between the pipeline laying and the clamp arrangement is fully considered: pipeline laying must be matched with clamp arrangement, pipeline laying is needed on the basis of clamp arrangement, so that the engineering assembly problem of pipeline and clamp is solved (because if pipeline is arranged first and then clamp is arranged, the clamp belongs to series parts in a standard part library, has fixed size and shape, and can be arranged only in an allowed area, so that the problem that the clamp cannot be assembled and fixed can exist), and therefore, the arrangement position of the clamp has an important influence on the pipeline path trend; on the other hand, when arranging the clamp, the pipeline path trend needs to be roughly considered in advance, so that the clamp is arranged at the most appropriate position to enable the pipeline trend to be reasonable, namely the pipeline path has influence on the arrangement of the clamp. Thus, both the pipe laying and the clamp arrangement interact with each other, there being a coupling relationship. The invention fully considers the assembly constraint and the coupling relation between the two and completes the decoupling treatment.
In the actual operation of the pipeline system engineering of the aeroengine, the design operation aiming at pipeline laying and clamp arrangement is largely dependent on manual experience for the optimal design problem of the pipeline system, and the pipeline laying and the clamp arrangement are respectively operated by using a traditional serial design mode. Under the premise of not considering clamp arrangement, after pipeline laying design is completed, the clamp is likely to be in an undeployed area, so that a method taking and assembling problem possibly exists between the pipeline and the clamp, and the pipeline path is required to be readjusted at the moment, and is repeatedly debugged and modified, so that the problem that pipeline laying and clamp arrangement cannot be simultaneously optimal exists, a plurality of problems that the pipeline and clamp engineering assembly is difficult, the clamp cannot be reasonably arranged and the like occur in engineering actual operation, the design of an external system of an aeroengine is affected, and the research and development period of a pipeline system is greatly prolonged.
The pipe system of complex equipment such as aircraft engines is very complex and comprises, in addition to the pipes, supporting parts such as clips. The pipeline laying and the clamp arrangement need to meet respective design rules while also having assembly constraints. In particular, pipeline laying of an aeroengine is generally based on the arrangement of clamps, the arrangement position of the clamps needs to be considered when designing pipeline paths, the arrangement of the clamps also needs to consider the approximate trend of pipelines, and the two components are mutually influenced and have coupling relation. The traditional design method is to carry out pipeline laying and clamp arrangement respectively, and repeated modification is often caused, so that the design period is prolonged, and the optimization of the pipeline system design is difficult to realize.
Disclosure of Invention
The intelligent optimization design method which gives consideration to the integral optimization of the pipeline laying and the clamp arrangement solves the design assembly constraint and the coupling relation of the pipeline laying and the clamp arrangement, realizes the integral optimization design of the pipeline laying and the clamp arrangement, and solves the problems that the traditional design period is prolonged and the design optimization of a pipeline system is difficult to realize.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
1. an intelligent optimization design method for integrating pipeline laying and clamp arrangement optimization comprises the following steps:
s1, establishing a path mode based on a clamp based on the assembly constraint relation of a pipeline and the clamp: the pipeline path nodes consist of pipe joint pulling out points, clamp pulling out points and conventional path nodes together, wherein the clamp pulling out points are nodes which are generated by pulling out a certain length along the inner diameter axis of the clamp after the clamp is arranged, the conventional path nodes are optional parts, and when the number of the conventional path nodes is set to zero, all the path nodes of the pipeline are determined by the pipe joint pulling out points and the clamp pulling out points.
S2, carrying out integral coding on the number, the position, the space pose rotation angle, the pipe joint stretching out point and the pipe joint stretching out point of the clamp, establishing a pipeline path information integral coding mode considering the clamp, carrying out integral coding by taking the number, the position and the space pose rotation angle of the clamp, the pipe joint stretching out point and the conventional path node coordinates of the clamp as decision variables, and firstly marking the setting of the starting point and the ending point of a pipeline as (S) 1 ，t 1 )、(s 2 ，t 2 ) The method comprises the steps of carrying out a first treatment on the surface of the The number of the hoops to be placed is recorded as N k The method comprises the steps of carrying out a first treatment on the surface of the The position coordinate of the clamp is (X k ，Y k ，Z k ) The method comprises the steps of carrying out a first treatment on the surface of the The clamp space pose angle is theta k The method comprises the steps of carrying out a first treatment on the surface of the The pipeline path stretches out along the joint mouth from the starting point and the ending point (x s ，y s ，z s )、(x t ，y t ，z t ) And joints stretched out by the clamp and conventional pipeline joints.
S3, with the pipeline length f 1 Minimization, pipeline smoothness (bending angle) f 2 Optimum number of clips f 3 The minimization (and weight positive correlation) is an optimization goal, and the calculation method is as follows:
f 3 ＝N k (3)
where m is the number of pipeline path nodes, (x) i ,y i ,z i ) I is more than or equal to 1 and less than or equal to m as node coordinates of the path; beta obtained by the formula (2) i Is the included angle theta between the pipeline paths i The smaller the complement angle, the smoother the pipeline is at the bending position;
the pipeline obstacle avoidance and clamp avoiding non-distributable areas and the pipeline clamping hoop is arranged in a specified length to improve the vibration performance of the pipeline are taken as main constraint conditions, and the constraint conditions are processed by a penalty function method.
The comprehensive evaluation function for integrally optimizing the individual adaptation values of the pipeline laying and the clamp arrangement is established as follows:
F＝α 1 ·f 1 +a 2 ·f 2 +a 3 ·f 2 +β 1 ·h 1 +β 2 ·h 2
(4)
and S4, carrying out population updating and iterative calculation by applying an intelligent optimization algorithm such as a particle swarm optimization algorithm to the overall flow, and finally calculating to obtain pipeline path information, the number of clamps, the positions and the rotation angles of the spatial pose.
The beneficial effects of the invention are as follows:
1. the invention optimizes the pipeline laying and the clamp arrangement integrally, breaks through the traditional serial design mode for the pipeline system, solves the problem of design coupling influence of the pipeline laying and the clamp arrangement, and solves the practical technical problem of repeated modification caused by the operation of the pipeline laying and the clamp arrangement respectively.
2. The invention provides an intelligent optimization method for integrally optimizing pipeline laying and clamp arrangement, which takes the length, bending angle and the number of clamps of a pipeline as optimization targets, takes the pipeline obstacle avoidance, the clamp avoidance of an inextensible area and the clamp arrangement in the specified length of the pipeline as constraint conditions, and establishes a comprehensive optimization target and constraint condition function considering the pipeline laying and the clamp arrangement. And carrying out integral coding design on the number, the positions, the space pose angles and the pipeline path coordinate information of the clamps, and integrally optimizing pipeline laying and clamp arrangement through population iterative calculation.
3. The invention considers the assembly constraint relation of the pipeline and the clamp, namely, the pipeline laying must be established on the basis of the clamp arrangement, and the engineering requirement of the pipeline laying matched with the clamp arrangement is met; at the same time, the clamp must be arranged in the allowed appointed area, and the clamp cannot be placed randomly. And finally, the pipeline and the clamp can complete the integral optimization design meeting the engineering assembly constraint.
The invention breaks through the traditional design modes of pipeline laying and clamp arrangement, and provides an overall optimization design method taking both pipeline laying and clamp arrangement into consideration. The technology can effectively improve the design quality of the complex equipment pipeline system and improve the design efficiency.
Drawings
Fig. 1 shows a conventional path node path mode with a band based on the band according to the present invention.
Fig. 2 illustrates a clip-based path mode without conventional path nodes according to the present invention.
FIG. 3 is a schematic diagram of an individual code according to the present invention
FIG. 4 is a general flow chart of the present invention
FIG. 5 shows the result of a certain implementation in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below by taking an aeroengine pipeline design system as an example in conjunction with the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-4, the intelligent optimization design method for the integral optimization of pipeline laying and clamp arrangement comprises the following method steps:
s1, establishing a path mode based on a clamp based on the assembly constraint relation of a pipeline and the clamp: the pipeline path node consists of a pipe joint pulling-out point, a clamp pulling-out point and a conventional path node, wherein the clamp pulling-out point is a node which is generated by pulling out a certain length along the inner diameter axis of the clamp after the clamp is arranged.
S2, carrying out integral coding on the number, the positions and the spatial pose rotation angles of the clamps, the pipe joint drawing points and the clamp drawing points, and establishing a pipeline path information integral coding mode considering the clamps. First, the seat mark of the starting point and the ending point of the pipeline is(s) 1 ，t 1 )、(s 2 ，t 2 ) The method comprises the steps of carrying out a first treatment on the surface of the The number of the hoops to be placed is recorded as N k The method comprises the steps of carrying out a first treatment on the surface of the The position coordinate of the clamp is (X k ，Y k ，Z k ) The method comprises the steps of carrying out a first treatment on the surface of the The clamp space pose angle is theta k The method comprises the steps of carrying out a first treatment on the surface of the The pipeline path node is stretched out along the pipe joint from the starting point and the ending point (x) s ，y s ，z s )、(x t ，y t ，z t ) The joint is calculated according to the clamp position, the space pose rotation angle and the stretched length.
S3, in the aspect of optimizing an objective function, the optimization objective of pipeline laying and clamp arrangement is comprehensively considered. With a pipe length f 1 Minimization, pipeline smoothness (bending angle) f 2 Optimum number of clips f 3 The minimization (and weight positive correlation) is an optimization goal, and the calculation method is as follows:
f 3 ＝N k (3)
where m is a pipeline path nodeNumber of (x) i ,y i ,z i ) I is more than or equal to 1 and less than or equal to m as node coordinates of the path; beta obtained by the formula (2) i Is the included angle theta between the pipeline paths i The smaller the complement angle, the smoother the pipeline is at the bending position;
in terms of constraint conditions, the invention comprehensively considers the constraint of pipeline laying and clamp arrangement. The pipeline is used for avoiding barriers, the clamp is used for avoiding non-distributable areas, the clamp is arranged in a specified length of the pipeline to improve the vibration performance of the pipeline, and the constraint condition is processed by adopting a penalty function method, namely: (1) When the pipeline is intersected with the obstacle, punishing the fitness function of the pipeline, and eliminating the pipeline in the evolution process; (2) When the clamp arrangement does not meet the clamp arrangement constraint, punishment is carried out on the adaptive value function of the clamp arrangement, and then the clamp arrangement is eliminated in the evolution process.
The optimization targets and the constraint conditions are comprehensively considered, and an individual adaptation value comprehensive evaluation function for the integral optimization of the pipeline laying and the clamp arrangement is established as follows:
F＝α 1 ·f 1 +a 2 ·f 2 +a 3 ·f 2 +β 1 ·h 1 +β 2 ·h 2
(4)
wherein alpha is 1 、a 2 、a 3 Is a weighting coefficient; beta 1 、β 2 Is a penalty coefficient; h is a 1 The interference times of the pipeline and the obstacle are shown; h is a 2 Indicating whether the clamp meets the arrangement constraint, satisfying a value of 0, otherwise 1.
And S4, carrying out population updating and iterative calculation by taking particle swarm optimization as an example on the basis of the overall flow and 2 and 3, and finally calculating to obtain pipeline path information, the number of clamps, the positions and the rotation angles of the spatial pose. Fig. 5 shows the results of the implementation in the examples.
In the embodiment, the integral optimization of the pipeline layout and the clamp arrangement of the aeroengine breaks through the traditional separate optimization mode, the integral coding of the pipeline path and the clamp position is carried out by adopting an intelligent optimization method, the integral optimization solution of the pipeline path and the clamp position is carried out by adopting the intelligent optimization method, the particle swarm optimization is one of the intelligent optimization algorithms, the integral optimization technology of the pipeline layout and the clamp arrangement provided by the invention is still applicable to solving by adopting other intelligent optimization algorithms such as genetic algorithm, ant colony algorithm, multi-objective evolutionary algorithm and the like by applying the technical framework of the invention, and the method is still within the claims of the invention.
In the embodiment, the pipeline laying and the clamp arrangement are integrally optimized, so that the optimization efficiency is improved, an optimized pipeline path is finally obtained, and the clamp arrangement is optimized. The invention solves the actual technical problems caused by the separate implementation of the traditional pipeline laying and the clamp arrangement, realizes the integral optimization of the pipeline laying and the clamp arrangement, can simultaneously solve the pipeline laying path, the number of the clamps, the position and the space rotation angle, realizes the integral optimization of a pipeline system, improves the design quality of the pipeline system, simultaneously avoids the repeated modification between the pipeline laying and the clamp arrangement, and improves the design efficiency.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (1)
1. The intelligent optimization design method for the integral optimization of pipeline laying and clamp arrangement is characterized by comprising the following steps of:
s1, establishing a path mode based on a clamp based on the assembly constraint relation of a pipeline and the clamp: the pipeline path nodes consist of pipe joint pulling-out points, clamp pulling-out points and conventional path nodes, wherein the clamp pulling-out points are nodes generated by pulling out a certain length along the inner diameter axis of the clamp after the clamp is arranged, the conventional path nodes are optional parts, and when the number of the conventional path nodes is set to zero, all the path nodes of the pipeline are determined by the pipe joint pulling-out points and the clamp pulling-out points;
s2, carrying out integral coding on the number, the position, the space pose rotation angle, the pipe joint stretching out point and the pipe joint stretching out point of the clamp, establishing a pipeline path information integral coding mode considering the clamp, carrying out integral coding by taking the number, the position and the space pose rotation angle of the clamp, the pipe joint stretching out point and the conventional path node coordinates of the clamp as decision variables, and firstly marking the setting of the starting point and the ending point of a pipeline as (S) 1 ，t 1 )、(s 2 ，t 2 ) The method comprises the steps of carrying out a first treatment on the surface of the The number of the hoops to be placed is recorded as N k The method comprises the steps of carrying out a first treatment on the surface of the The position coordinate of the clamp is (X k ，Y k ，Z k ) The method comprises the steps of carrying out a first treatment on the surface of the The clamp space pose angle is theta k The method comprises the steps of carrying out a first treatment on the surface of the The pipeline path stretches out along the joint mouth from the starting point and the ending point (x s ，y s ，z s )、(x t ，y t ，z t ) The joint stretched by the clamp and the joint of the conventional pipeline consist of;
s3, with the pipeline length f 1 Minimizing the pipeline smoothness f 2 Optimum number of clips f 3 The minimization is an optimization target, and the calculation method is as follows:
f 3 ＝N k (3)
where m is the number of pipeline path nodes, (x) i ,y i ,z i ) I is more than or equal to 1 and less than or equal to m as node coordinates of the path; beta obtained by the formula (2) i Is the included angle theta between the pipeline paths i The smaller the complement angle, the smoother the pipeline is at the bending position;
taking a main constraint condition that a pipeline is prevented from being blocked, a clamp is prevented from passing through an area which cannot be distributed, and the clamp is arranged in a specified length of the pipeline to improve the vibration performance of the pipeline, wherein the constraint condition is processed by a penalty function method;
the comprehensive evaluation function for integrally optimizing the individual adaptation values of the pipeline laying and the clamp arrangement is established as follows:
F＝α 1 ·f 1 +a 2 ·f 2 +a 3 ·f 2 +β 1 ·h 1 +β 2 ·h 2 (4)
and S4, carrying out population updating and iterative calculation by applying an intelligent optimization algorithm such as a particle swarm optimization algorithm to the overall flow, and finally calculating to obtain pipeline path information, the number, the position and the spatial pose rotation angle of the clamp.
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