CN107391826B - Regulating valve model selection method based on multi-color set product family configuration design - Google Patents
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Abstract
The invention discloses a regulating valve model selection method based on configuration design of a multicolor aggregate product family. According to the invention, a top layer design system model of the regulating valve is established, the top layer rapid design of the regulating valve product based on the MBSE is provided, and the regulating valve product based on the MBSE is rapidly selected according to a design result. The design requirement of products aiming at a specific industry is met, and the repeated design work is less; the method can realize the quick and effective application of the enterprise design resource library. The method has the advantages of convenience, rapidness, short design period, standardized design process, standardized type selection process, high model reuse level and rapidness in type selection.
Description
Technical Field
The invention relates to the field of regulating valve design and model selection, in particular to a regulating valve model selection method for generating a girth Boolean matrix on the basis of an enterprise design resource library established by fast design of a multi-color set product family of regulating valve products.
Background
In the design process of mechanical products, in order to shorten the product development period, reduce the product development cost, improve the product quality and service level, and meet the diversity requirements of users, a top-level rapid design method of the mechanical products needs to be sought. For valve manufacturing enterprises, valve product data which are designed are stored in a corresponding design resource library and are continuously accumulated along with design, so that a designer can well refer to the valve product data in the later design process, the design knowledge reuse level of the enterprise is improved, and the design cost of the enterprise is reduced. According to the existing design resource library of enterprises, the quick selection of the regulating valve aiming at different user demands is realized, and the selection efficiency of enterprise series products is improved.
At present, domestic valve products are produced mainly by small and medium-sized enterprises, the enterprises usually adopt two-dimensional main and three-dimensional CAD software as auxiliary for collaborative design of the valve products, and in the process of model selection of the regulating valve, the existing model selection method is operated according to the thinking of model selection and design, namely, according to different user requirements, a flow characteristic curve of the regulating valve is selected according to use functions, then the diameter of a valve seat is preliminarily selected, and according to related design manuals and calculation, other design parameters such as flow capacity and the like are obtained. The design method has strong universality, can not meet the design requirements of products aiming at specific industries, and has more repeated design work; the method has the problems that the rapid and effective application of the enterprise design resource library is difficult, namely, the level of reusing the enterprise resource library is low in the design process, and the design efficiency and the quality of a valve product are difficult to improve.
The invention provides a regulating valve model selection method based on configuration design of a multi-color set product family, and aims at the important significance of improving enterprise design efficiency by rapid design of mechanical products and rapidly selecting existing series products of enterprises by users. The Polychrome Sets Theory (PST) is a modern manufacturing Theory, is a new mathematical tool for information processing, is generated to meet the intense market competition, and is a modeling tool based on color and coloring principle proposed by professor v. The method can improve the design efficiency of the regulating valve product, and can also provide a good guiding function for enterprises to quickly select products in the existing design resource library.
Disclosure of Invention
The invention aims to solve the technical problem of providing a regulating valve model selection method based on configuration design of a multi-color set product family, which is convenient and quick, short in design period, standardized in design process, standardized in model selection process, high in model reuse level and rapid in model selection.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a regulating valve model selection method based on configuration design of a multicolor set product family comprises the following implementation steps:
1) in the demand management software, combining with the demand analysis of a regulating valve product, carrying out the demand semantic conversion and management expressed by a user to obtain the system demand semantics; then, obtaining a demand model which can meet the demand of a user and can better express the system function according to the system demand semantics;
2) performing product function analysis according to the demand model, and constructing a function model; wherein the functional analysis comprises functional definition and functional model decomposition;
the function definition refers to system function definition meeting user requirements, and comprises the movement of an actuating mechanism of an adjusting valve, the action of the adjusting mechanism, the connection and support of the adjusting mechanism and the actuating mechanism, pressure signal feedback and medium transmission;
the functional model decomposition means that the mechanism movement or action in the functional definition stage is decomposed into more specific sub-functions or sub-systems; the device comprises an actuating mechanism, an adjusting mechanism, a connecting support, a medium transmission environment and a connecting external pipeline, wherein the actuating mechanism moves up and down, the adjusting mechanism is adjusted, the connecting support is used for providing the adjusting mechanism and the actuating mechanism, receiving and displaying feedback pressure signals, and providing the medium transmission environment and connecting the external pipeline.
3) And mapping the functional model to the structure of the product, mapping the sub-functions/subsystems to a unit component structure model for realizing the sub-functions/subsystems of the system, and obtaining a unit component modular structure model through decomposition and reasoning of the unit component structure model. The unit component structure model and the unit component modularized structure model form a design parameter set of a regulating valve physical model, the parameter set is subjected to parametric design according to user requirements to form a unit component geometric parameter model, and the model is the basis for constructing an enterprise design resource library. The mapping mechanism described above is a regulating valve system function-variable structure mapping mechanism.
4) According to the design parameter set, carrying out configuration design on the regulating valve to generate a peripheral passage Boolean matrix;
5) and combining the model of the regulating valve product component in the enterprise design resource library constructed by the unit component set parameter model, and performing product Boolean operation according to the surrounding passage Boolean matrix to obtain a regulating valve model selection product.
As a further improvement of the technical scheme of the invention:
after the requirement model is established in the step 1), one-to-many mapping relations may exist between system requirements and system functions, so that system use cases need to be selected and organized to obtain use cases of the regulating valve products. External interactive objects of the system are defined, which have certain connection and support with the system function realization, and some objects are components of the regulating valve system product family, which have important influence on the realization of the system function.
The functional model described in said step 2) is based on the system modeling language SysML. The functional model includes an activity diagram reflecting the operating state of the regulator valve system, a sequence diagram reflecting the timing of the operation of the system, and a state machine diagram describing how the state of the operation of the components of the system changes according to events that occur over time.
The regulating valve system function-variable structure mapping mechanism in the step 3) is a mechanism obtained based on a modular design technology and a parameterized design technology, and a design parameter set of a regulating valve product can be formed through the mechanism.
When the step 4) generates the circular road Boolean matrix, the product is taken to perform Boolean operation as the formula (1)
Wherein A represents a set; f (a)j) Representing element ajPersonal coloration of (a); column boolean vector f1,f2,…,fqAll elements which represent the personal color in the personal coloring can be nominal Diameter (DN), nominal Pressure (PN), stroke (S), valve seat diameter (Sd) and the like, which are design parameter sets obtained by a unit component geometric parameter model of the regulating valve and are also important basis for the model selection work of the regulating valve; row Boolean vector a1,a2,…,anThe individual coloring of the elements in the representation system, representing the power assembly, the execution assembly, the movement assembly, the support assembly and the rest of the unit assemblies in the regulating valve system, is a step (3) modular structure assembly.
The invention has the following advantages: the invention provides the top layer rapid design of the regulating valve product of MBSE (model-based system engineering) by establishing a regulating valve top layer design system model, and rapidly selects products based on the regulating valve according to the design result. The design requirement of products aiming at a specific industry is met, and the repeated design work is less; the method can realize the quick and effective application of the enterprise design resource library. The method has the advantages of convenience, rapidness, short design period, standardized design process, standardized type selection process, high model reuse level and rapidness in type selection.
Drawings
FIG. 1 is a schematic flow chart of an embodiment of the present invention.
FIG. 2 is an illustration of SysML usage in accordance with an embodiment of the present invention.
Fig. 3 is an activity diagram reflecting the operation status of the regulator valve system according to the embodiment of the present invention.
Fig. 4 is a sequence diagram reflecting the system operation timing sequence according to the embodiment of the present invention.
FIG. 5 is a state machine diagram that describes how the state of operation of system components changes based on events that occur over time, according to an embodiment of the present invention.
FIG. 6 is a multi-color aggregate functional-variable structure map of an adjustment valve system of an embodiment of the present invention.
FIG. 7 is a circular Boolean matrix generated by the design of the valve configuration according to an embodiment of the present invention.
FIG. 8 is a diagram illustrating a model selection product obtained by integrating Boolean operations according to an embodiment of the present invention.
Description of reference numerals:
1 valve body, 2 valve seat, 3 valve core and 4 valve cover
5 valve rod 6 packing bottom pad 7 packing spring 8 lower seal ring
9 middle seal ring 10 upper seal ring 11 support 12 spring seat
13 lower membrane cover 14 upper limiting piece of rubber membrane 15 upper membrane cover 16
17 tray 18 extension rod 19 screw 20 spring
21 push rod 22 guide seat 23 pair clamp block 24 packing press plate
25 stuffing pressing nail 26 guide sleeve
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a flow chart of a pneumatic membrane single seat regulating valve model selection method according to the present invention. The pneumatic film single-seat regulating valve model selection method comprises the following steps:
1) the power source expressed according to the user demand semantics is pneumatic, the sealing mode is a film mode, the actuating mechanism is a valve rod assembly, the adjusting mechanism is a valve core component and other requirements, system-level requirements such as a system power source, the actuating mechanism, the adjusting mechanism and the like are converted, and the demand analysis of the adjusting valve product is carried out to obtain a demand model use case;
2) performing product function analysis according to the demand model, and performing function definition and function model decomposition;
3) mapping the functional model to the structure of a product, and obtaining a regulating valve physical model, namely a design parameter set, according to a regulating valve system multicolor set function-variable structure mapping mechanism;
4) according to the design parameter set, carrying out configuration design on the regulating valve to generate a peripheral passage Boolean matrix;
5) and performing product Boolean operation according to the circular path Boolean matrix to obtain the model selection product.
SysML is a tool for supporting Model Driven Architecture (MDA) proposed by OMG (object Management group), and is used as an extension of Unified Modeling Language (UML), and the definition and association relationship of its built-in type must conform to UML specification. FIG. 2 is an illustration of SysML usage in accordance with an embodiment of the present invention. The use case diagram defines external interactive objects of the system, the objects have necessary connection and support with the system function implementation, and some objects are components among the regulating valve system product family, and the objects have important influence on the implementation of the system function. Fig. 3 is an activity diagram reflecting the operation status of the regulator valve system according to the embodiment of the present invention. The activity graph can be used to convey system dynamic behavior information, can express a wide variety of activities, and can even describe the most complex behaviors. Fig. 4 is a sequence diagram reflecting the system operation timing sequence according to the embodiment of the present invention. The sequence diagram can specify the system behavior completely and clearly, and it conveys all three important information: the order in which the actions occur, which structure performed which action, which structure triggered which action. FIG. 5 is a state machine diagram that describes how the state of operation of system components changes based on events that occur over time, according to an embodiment of the present invention. The state machine diagram defines the meaning and responsibility of each module and determines the attributes and operations, and the connecting lines represent the semantic association relationship between the modules, including combination, aggregation, dependency and generalization.
In this embodiment, after the requirement model is established in step 1), classification of system-level requirements of the regulating valves is realized, and then the system-level requirements meeting the requirements are mapped. According to the functional requirements of the system, generating a system requirement specification, then defining a system Use Case (Use Case), namely a proper modeling scene, and developing the system modeling work.
Decomposing the system function of the regulating valve into the following steps in the step 2): the power source provides power to enable the actuating mechanism to act; driving the adjusting mechanism to perform medium flow adjusting action, and feeding an adjusting signal back to the system; the power source properly adjusts the input pressure according to the feedback signal of the system, so that the medium flow of the system is automatically adjusted.
And 3) mapping the functional model to the structure of the product. In the present embodiment, a Function-Variable Structure Mapping Mechanism (PFVSmm) based on the multicolor set theory is proposed. FIG. 6 shows the functional definition, functional decomposition, modular design of the unit components, and the functional-to-variable structure mapping mechanism of the regulating valve system according to the embodiment of the present invention. The mapped structure is a parameter set of the regulating valve, and some structures can be changed according to user requirements to a certain extent, namely, the structure body can be changed.
And 4) carrying out configuration design on the regulating valve according to the design parameter set to generate a surrounding Boolean matrix. Based on the multicolor set theory, the configuration design of each unit component of the regulating valve system is carried out according to a multicolor set product family configuration model, and an element set of the multicolor set model is composed of a series of unit components such as a power component, an execution component, a motion component, a supporting component and the like.
Step 5) when configuring a structural model of the regulating valve system, selecting row Boolean vectors in a power component, an execution component, a movement component and a supporting component representing matrix according to the model number of regulating valve product components in an enterprise design resource library and the peripheral road matrix when performing Boolean product operation, wherein the row Boolean vectors represent the individual coloring of elements of the system; the nominal Diameter (DN), nominal Pressure (PN), regulating valve travel (S) and valve seat diameter (Sd) are chosen to represent the column boolean vector in the circular boolean matrix, which represents all the elements of the individual coloration that contain the individual color. In actual operation, a circular road Boolean matrix is listed according to all product family specifications in an enterprise resource library, and then the product Boolean operation is carried out according to different user requirements, so that the regulating valve product required by a user can be rapidly configured. The following is a specific operation description of the present embodiment.
According to the parameters or specifications in the user requirement list and the circular channel Boolean matrix (figure 7) designed by the regulating valve configuration, the regulating valves required by the users have the uniform colors as follows:
{Fi(A)}＝{F12,F20,…,F69,…,F91,…}
the column vector corresponding to the circular channel Boolean matrix is as follows:
F12＝{0,0,1,…,1,0,…,1,0,…,0,1,…}
F20＝{1,1,1,…,1,0,…,1,1,…,1,1,…}
F69＝{0,1,1,…,1,1,…,1,1,…,0,1,…}
F91＝{1,0,1,…,1,1,…,1,0,…,0,1,…}
…
by adopting the product Boolean operation, the Boolean expression of the structure of each unit component of the regulating valve configured according to the requirements of a user is obtained as follows:
F12∧F20∧F69∧F91＝{0,0,1,…,1,0,…,1,0,…,0,1,…}∧{1,1,1,…,1,0,…,1,1,…,1,1,…}∧{0,1,1,…,1,1,…,1,1,…,0,1,…}∧{1,0,1,…,1,1,…,1,0,…,0,1,…}＝{0,0,1,…,1,0,…,1,0,…,0,1,…}
obtaining the corresponding element in the circular road Boolean matrix as { a3,…,a19,…,a41…,a85…, power module model DLZJ3, executive module model ZXZJ19, locomotion module model YDZJ41, and support module model ZCZJ 85. The assembly of the unit modules in the three-dimensional modeling software is shown in fig. 8. The final assembled regulating valve comprises a valve body 1, a valve seat 2, a valve core 3, a valve cover 4, a valve rod 5, a packing bottom pad 6, a packing spring 7, a lower sealing ring 8, a middle sealing ring 9, an upper sealing ring 10, a support 11, a spring seat 12, a lower membrane cover 13, a rubber membrane 14, an upper membrane cover 15, a limiting piece 16, a tray 17, a tray 18The device comprises a connecting rod, 19 screws, 20 springs, 21 push rods, 22 guide seats, 23 pairs of clamping blocks, 24 packing press plates, 25 packing press nails and 26 guide sleeves. The regulating valve well meets the requirements that the power source provided by customers is pneumatic, the sealing mode is a film type, the actuating mechanism is a valve rod assembly, and the regulating mechanism is a valve core component. The regulating valve configured by the method is based on a parameterized enterprise design resource library construction technology and a modeling tool of a multicolor set theory based on a color and coloring theory, and has the advantages of convenience, rapidness, short design period, standardized design process, standardized type selection process, high model reuse level and rapidness in type selection.
The working principle of the embodiment is as follows: firstly, a top-layer rapid design of a regulating valve system based on MBSE is carried out to obtain a system-level demand model and a functional model. Then, product function definition and function model decomposition are carried out, the function model is mapped to the structure of the product, and a regulating valve physical model, namely a design parameter set, is obtained according to a regulating valve system function-variable structure mapping mechanism; then according to the design parameter set, carrying out configuration design on the regulating valve to generate a peripheral passage Boolean matrix; and finally, performing product Boolean operation according to the circular road Boolean matrix to obtain a model selection product.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, and all technical solutions belonging to the principle of the present invention belong to the protection scope of the present invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and such changes and modifications are to be considered within the scope of the invention.
Claims (1)
1. The model selection method of the pneumatic film single-seat regulating valve is characterized by comprising the following steps of:
1) the power source expressed according to the user demand semantics is pneumatic, the sealing mode is a film mode, the actuating mechanism is a valve rod assembly, the adjusting mechanism is a valve core component, the system level requirements of the system power source, the actuating mechanism and the adjusting mechanism are converted, and the requirement analysis of the adjusting valve product is carried out to obtain a requirement model use diagram;
2) performing product function analysis according to the demand model, and performing function definition and function model decomposition;
the product function analysis is specifically that the function of the regulating valve system is decomposed into power supply for providing power, so that the actuating mechanism acts; driving the adjusting mechanism to perform medium flow adjusting action, and feeding an adjusting signal back to the system; the power source properly adjusts the input pressure according to the signal fed back by the system, so that the medium flow of the system is automatically adjusted;
the functions are defined as FA1 actuator movement, FA2 adjustment mechanism action, FA3 adjustment mechanism, actuator connection support, FA4 signal feedback and FA5 medium transmission;
the functional model is decomposed into: the FA1 actuator movement is decomposed into FA11 downward movement and FA12 upward movement, the FA11 downward movement is decomposed into FA111 power generation and FA112 gas chamber sealing, and the FA12 upward movement is decomposed into FA121 thrust generation, FA122 limit, FA123 support and FA124 guide; the FA2 regulating mechanism action is decomposed into FA21 movement and FA22 regulation, the FA21 movement is decomposed into FA211 power transmission and FA212 movement limit, the FA22 regulation is decomposed into FA221 regulation flow and FA222 prevention leakage; the FA3 adjustment mechanism is disassembled to provide connection support for FA 31; the FA4 signal feedback is decomposed into an FA41 receiving feedback signal and an FA42 displaying feedback signal; FA5 medium transmission is decomposed into FA51 connected with an external pipeline and FA52 provides a medium transmission environment;
3) mapping the functional model to the structure of the product, mapping the sub-functions/subsystems to a unit component structure model for realizing the sub-functions/subsystems of the system, and obtaining a unit component modular structure model through decomposition and reasoning of the unit component structure model;
the unit component structure model and the unit component modularized structure model form a design parameter set of a physical model of the regulating valve; the parameter set is parameterized and designed according to the requirements of users to form a unit component geometric parameter model which is the basis for constructing an enterprise design resource library;
the mapping mechanism described above is a regulating valve system function-variable structure mapping PFVSmm;
the unit component structure model comprises a DP1 actuator, a DP2 adjusting mechanism, a DP3 supporting device, a DP4 signal feedback detection device and a DP5 medium transmission device;
the modular structure model of the unit components comprises a DP11 power device, a DP12 executing device, a DP21 moving device, a DP22 adjusting device, a DP31 bracket, a DP41 positioner, a DP42 dial, a DP51 flange and a DP52 valve body; the DP11 power device and the DP12 actuating device are obtained by decomposing a DP1 actuating mechanism, the DP21 moving device and the DP22 adjusting device are obtained by decomposing a DP2 adjusting mechanism, the DP31 support is obtained by decomposing a DP3 supporting device, the DP41 positioner and the DP42 dial are obtained by decomposing a DP4 signal feedback detecting device, and the DP51 flange and the DP52 valve body are obtained by decomposing a DP5 medium transmission device;
the unit component geometric parameter model comprises a DP111 gas source, a DP112 gas chamber, a DP121 gas chamber spring parameter set, a DP122 push rod parameter set, a DP123 connecting rod parameter set, a DP124 valve rod parameter set, a DP125 upper limiting piece parameter set, a DP126 spring seat parameter set, a DP127 tray parameter set, a DP128 guide seat parameter set, a DP211 pair clamp block parameter set, a DP212 valve seat parameter set, a DP213 valve cover parameter set, a DP221 valve core parameter set, a DP222 packing bottom pad parameter set, a DP223 packing spring parameter set, a DP224 upper sealing ring parameter set, a DP225 middle sealing ring parameter set, a DP226 lower sealing ring parameter set, a DP227 packing press pin parameter set, a DP228 packing press plate parameter set, a DP1121 upper film cover parameter set, a DP1122 lower film cover parameter set and a DP1123 rubber diaphragm;
4) according to the design parameter set, carrying out configuration design on the regulating valve to generate a peripheral passage Boolean matrix;
5) combining the model of the regulating valve product components in the enterprise design resource library, and performing an integrating Boolean operation according to the busway Boolean matrix to obtain a regulating valve model selection product;
product-taking Boolean operation as formula (1)
Wherein A represents a set; f (a)j) Representing element ajPersonal coloration of (a); column boolean vector f1,f2,…,fqAll elements which represent the personal color in the personal coloring are design parameters obtained by a unit component geometric parameter model of the regulating valve; row Boolean vector a1,a2,…,anRepresenting the personal coloring of elements in the system, and obtaining a modular structure component by the modular structure model of the unit component in the step 3).
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