CN116542179B - Analysis system for ultra-large caliber axial flow check butterfly valve based on vibration control - Google Patents
Analysis system for ultra-large caliber axial flow check butterfly valve based on vibration control Download PDFInfo
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Abstract
The invention relates to the technical field of check butterfly valves and discloses an analysis system for an ultra-large-caliber axial flow check butterfly valve based on vibration control, which comprises a data calculation module, a stress analysis module, a model building module and a vibration analysis module, wherein the data calculation module is used for obtaining temperature parameters of the ultra-large-caliber axial flow check butterfly valve, calculating structural thermal deformation values of the ultra-large-caliber axial flow check butterfly valve according to the temperature parameters, the stress analysis module is used for carrying out structural stress analysis according to the structural thermal deformation values, the model building module is used for collecting internal parameters of the ultra-large-caliber axial flow check butterfly valve, and establishing a fluid-solid coupling dynamics model according to the internal parameters, and the vibration analysis module is used for carrying out structural vibration characteristic analysis based on the fluid-solid coupling dynamics model.
Description
Technical Field
The invention relates to the technical field of check butterfly valves, in particular to an analysis system for an ultra-large caliber axial flow check butterfly valve based on vibration control.
Background
Under the action of self weight and variable pressure field in the ultra-large caliber axial flow check butterfly valve, different deformation rules exist under different running states of each part valve, so that the matching relation among the parts is changed, structural strength is influenced, meanwhile, the check butterfly valve is subjected to continuous flow field pulsating pressure action at an upstream supercharging equipment outlet, and is subjected to severe impact action of backflow medium in the process of closing the check butterfly valve, so that the valve is subjected to flow-induced vibration, running stability and reliability of the valve are greatly reduced, and structural damage of related parts is caused. Therefore, the ultra-large caliber axial flow check butterfly valve with high reliability and stability needs to be designed, and the research of fluid-solid coupling flow induced vibration is very necessary to be developed, so that the structural design technology of the ultra-large caliber check butterfly valve with high strength and high reliability based on vibration control is mastered.
The check butterfly valve is directly arranged at an outlet of supercharging equipment such as a pump, a compressor and the like, because pressure pulsation exists in the output process, unstable fluid acting load is formed on the surface of an internal overflowing structure of the valve, meanwhile, flow separation is very easy to occur behind the butterfly plate, strong flow induced vibration is jointly acted and induced, and further the stability of the whole structure of the valve is greatly influenced.
Therefore, how to provide an analysis system for an ultra-large caliber axial flow check butterfly valve based on vibration control is a technical problem to be solved at present.
Disclosure of Invention
The embodiment of the invention provides an analysis system for an ultra-large-caliber axial flow check butterfly valve based on vibration control, which is used for solving the technical problems that in the prior art, the influence of flow-induced vibration cannot be fully considered in the development process of the ultra-large-caliber axial flow check butterfly valve, the ultra-large-caliber axial flow check butterfly valve cannot be prevented from serious vibration, and faults such as loose structure and clamping and the like are frequently caused.
In order to achieve the above object, the present invention provides an analysis system for an ultra-large caliber axial flow check butterfly valve based on vibration control, comprising:
the data calculation module is used for obtaining the temperature parameter of the ultra-large-caliber axial flow check butterfly valve and calculating the structural thermal deformation value of the ultra-large-caliber axial flow check butterfly valve according to the temperature parameter;
the stress analysis module is used for carrying out structural stress analysis on the ultra-large-caliber axial flow check butterfly valve according to the structural thermal deformation value;
the model building module is used for collecting the internal parameters of the ultra-large caliber axial flow check butterfly valve and building a fluid-solid coupling dynamics model according to the internal parameters;
and the vibration analysis module is used for analyzing the structural vibration characteristics of the ultra-large-caliber axial flow check butterfly valve based on the fluid-solid coupling dynamics model.
In one embodiment, the data calculation module is specifically configured to:
the data calculation module is used for obtaining a first temperature of fluid in the ultra-large caliber axial flow check butterfly valve;
the data calculation module is used for obtaining a second temperature of the solid in the ultra-large caliber axial flow check butterfly valve;
the data calculation module is used for calculating a temperature difference value between the first temperature and the second temperature;
and the data calculation module is used for calculating the structural thermal deformation value of the ultra-large caliber axial flow check butterfly valve according to the temperature difference value.
In one embodiment, the data calculation module is specifically configured to:
the data calculation module is used for calculating the structural thermal deformation value of the ultra-large-caliber axial flow check butterfly valve according to the following steps:
wherein f T Is the structural thermal deformation value alpha of the ultra-large caliber axial flow check butterfly valve T T is the temperature difference, which is the thermal expansion coefficient associated with temperature.
In one embodiment, the stress analysis module is specifically configured to:
the stress analysis module is used for acquiring the cauchy stress tensor of the ultra-large-caliber axial flow check butterfly valve and the volumetric force vector of the ultra-large-caliber axial flow check butterfly valve;
the stress analysis module is used for calculating a structural mechanical characteristic analysis value of the ultra-large caliber axial flow check butterfly valve according to the cauchy stress tensor and the volumetric force vector;
and the stress analysis module is used for carrying out structural stress analysis on the ultra-large caliber axial flow check butterfly valve according to the structural mechanical property analysis value and the structural thermal deformation value.
In one embodiment, the stress analysis module is specifically configured to:
the stress analysis module is used for calculating the structural mechanical property analysis value according to the following formula:
wherein ρ is s Is a solid-state density of the material,is an acceleration vector; sigma (sigma) s Is the cauchy stress tensor; f (f) s For the volumetric force vector, the structural mechanical property analysis values include solid density and acceleration vectors.
In one embodiment, the model building module is specifically configured to:
the model building module is used for collecting fluid pulsation pressure of fluid in the ultra-large caliber axial flow check butterfly valve acting on the surface of the structure and acting force applied to the structure except the fluid pulsation pressure;
the model building module is used for building a dynamic calculation model between the valve structure of the ultra-large-caliber axial flow check butterfly valve and the structural displacement of the ultra-large-caliber axial flow check butterfly valve according to the fluid pulsation pressure and acting force born by the structure except the fluid pulsation pressure;
the model building module is used for building the fluid-solid coupling dynamics model according to the dynamics calculation model.
In one embodiment, the model building module is specifically configured to:
the model building module is used for building the dynamics calculation model according to the following formula:
wherein M is a mass matrix, C is a damping matrix, K is a stiffness matrix, x is a structural generalized displacement vector, f (t) is fluid pulsation pressure, f 0 (t) is the force to which the structure is subjected in addition to the pulsating pressure of the fluid.
In one embodiment, the model building module is specifically configured to:
the model building module is used for respectively setting a mass matrix of the structure, a rigidity matrix of the structure and a damping matrix of the structure according to the dynamics calculation model, and taking the mass matrix of the structure, the rigidity matrix of the structure and the damping matrix of the structure as a first model building set;
the model building module is used for respectively setting a mass matrix of the fluid, a rigidity matrix of the fluid and a damping matrix of the fluid according to the dynamics calculation model, and taking the mass matrix of the structure, the rigidity matrix of the structure and the damping matrix of the structure as a second model building set;
the model building module is used for building the fluid-solid coupling dynamics model according to the first model building set and the second model building set.
In one embodiment, the model building module is specifically configured to:
the model building module is used for building the fluid-solid coupling dynamics model according to the following formula:
wherein M is s 、K s 、C s Damping matrix of the structure, mass matrix of the structure, stiffness matrix of the structure, M f 、K f 、C f Respectively a mass matrix of the fluid, a stiffness matrix of the fluid and a damping matrix of the fluid, wherein P represents a fluid-solid coupling matrix, U represents a structural node displacement vector, F s Representing the out-of-structure load vector.
The invention provides an analysis system for an ultra-large caliber axial flow check butterfly valve based on vibration control, which has the following beneficial effects compared with the prior art:
the invention discloses an analysis system for an ultra-large caliber axial flow check butterfly valve based on vibration control, which comprises a data calculation module, a stress analysis module, a model building module and a vibration analysis module, wherein the data calculation module is used for acquiring temperature parameters of the ultra-large caliber axial flow check butterfly valve, calculating structural thermal deformation values of the ultra-large caliber axial flow check butterfly valve according to the temperature parameters, the stress analysis module is used for carrying out structural stress analysis according to the structural thermal deformation values, the model building module is used for acquiring internal parameters of the ultra-large caliber axial flow check butterfly valve, a fluid-solid coupling dynamics model is built according to the internal parameters, and the vibration analysis module is used for carrying out structural vibration characteristic analysis based on the fluid-solid coupling dynamics model.
Drawings
Fig. 1 shows a schematic structural diagram of an analysis system for an ultra-large caliber axial flow check butterfly valve based on vibration control in an embodiment of the invention.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying 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 application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The following is a description of preferred embodiments of the invention, taken in conjunction with the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention discloses an analysis system for an ultra-large caliber axial flow check butterfly valve based on vibration control, comprising: the system comprises a data calculation module, a stress analysis module, a model establishment module and a vibration analysis module.
It should be understood that the data calculation module is used for obtaining the temperature parameter of the ultra-large caliber axial flow check butterfly valve, calculating the structural thermal deformation value of the ultra-large caliber axial flow check butterfly valve according to the temperature parameter, the stress analysis module is used for carrying out structural stress analysis on the ultra-large caliber axial flow check butterfly valve according to the structural thermal deformation value, the model establishment module is used for collecting the internal parameter of the ultra-large caliber axial flow check butterfly valve, establishing a fluid-solid coupling dynamics model according to the internal parameter, and the vibration analysis module is used for carrying out structural vibration characteristic analysis on the ultra-large caliber axial flow check butterfly valve based on the fluid-solid coupling dynamics model.
During the use process, the ultra-large caliber axial flow check butterfly valve is directly arranged at the outlet positions of the pump and the compressor and used for emergency cutting off after equipment is stopped, so that the safety of pipelines and upstream low-pressure equipment is protected. In the design process of the common valve, the influence of flow on the valve structure is small because the working condition of the application occasion is simpler. However, in the running process of the ultra-large caliber axial flow check butterfly valve, two flow processes of forward and reverse exist, and meanwhile, the reverse backflow fluid can form extremely large flow impact to damage the structural strength and structural stability of the valve. At the same time, the check valve is more greatly influenced by the pulsating pressure output by the upstream pump, the compressor and the like, so that structural analysis and reliability design must be performed in consideration of actual operation characteristics. The invention can avoid the phenomena of frequent faults such as loose structure, jamming and the like caused by serious vibration of the ultra-large caliber axial flow check butterfly valve in the operation process, and realize the safe and stable operation of the ultra-large caliber axial flow check butterfly valve.
In some embodiments of the present application, the data calculation module is specifically configured to:
the data calculation module is used for obtaining a first temperature of fluid in the ultra-large caliber axial flow check butterfly valve;
the data calculation module is used for obtaining a second temperature of the solid in the ultra-large caliber axial flow check butterfly valve;
the data calculation module is used for calculating a temperature difference value between the first temperature and the second temperature;
and the data calculation module is used for calculating the structural thermal deformation value of the ultra-large caliber axial flow check butterfly valve according to the temperature difference value.
In some embodiments of the present application, the data calculation module is specifically configured to:
the data calculation module is used for calculating the structural thermal deformation value of the ultra-large-caliber axial flow check butterfly valve according to the following steps:
wherein f T Is the structural thermal deformation value alpha of the ultra-large caliber axial flow check butterfly valve T T is the temperature difference, which is the thermal expansion coefficient associated with temperature.
In the embodiment, thermodynamic influence caused by medium heat transfer is considered, heat transfer is carried out aiming at the problem that uneven temperature distribution in the ultra-large-caliber axial flow check butterfly valve structure is caused in an unstable heat exchange process due to temperature difference between fluid and solid, so that the problems of thermal stress, thermal expansion, thermal deformation and the like in the metal are caused. The friction moment calculation of the deformed butterfly plate and the valve body, the valve rod and the valve seat, the valve rod and the packing and the like is carried out on the basis, the effects of fluid action moment, mechanical friction moment, rotating piece mass moment of inertia and gravity action moment are considered, the change rules of the fluid action moment under different butterfly plate operation speeds and different opening degrees of the butterfly plate in the closing process are analyzed, the hydraulic moment matching design of the slow-closing cylinder is carried out, the resistance moment is provided through the hydraulic cylinder, the movement speed of the butterfly plate before complete closing is reduced, and severe collision between the butterfly plate and the valve seat and the valve body due to the synergistic effect of the self weight and the fluid action force is avoided.
In some embodiments of the present application, the stress analysis module is specifically configured to:
the stress analysis module is used for acquiring the cauchy stress tensor of the ultra-large-caliber axial flow check butterfly valve and the volumetric force vector of the ultra-large-caliber axial flow check butterfly valve;
the stress analysis module is used for calculating a structural mechanical characteristic analysis value of the ultra-large caliber axial flow check butterfly valve according to the cauchy stress tensor and the volumetric force vector;
and the stress analysis module is used for carrying out structural stress analysis on the ultra-large caliber axial flow check butterfly valve according to the structural mechanical property analysis value and the structural thermal deformation value.
In some embodiments of the present application, the stress analysis module is specifically configured to:
the stress analysis module is used for calculating the structural mechanical property analysis value according to the following formula:
wherein ρ is s Is a solid-state density of the material,is an acceleration vector; sigma (sigma) s Is the cauchy stress tensor; f (f) s For the volumetric force vector, the structural mechanical property analysis values include solid density and acceleration vectors.
In the embodiment, according to the structural mechanical property analysis value of the ultra-large-caliber axial flow check butterfly valve, structural stress analysis can be carried out on the ultra-large-caliber axial flow check butterfly valve, so that the structural mechanical property analysis value of the ultra-large-caliber axial flow check butterfly valve is calculated, and then the structural stress analysis is carried out on the ultra-large-caliber axial flow check butterfly valve according to the structural mechanical property analysis value and the structural thermal deformation value, so that reliable data support can be provided for structural strength and structural stability analysis of the ultra-large-caliber axial flow check butterfly valve.
In some embodiments of the present application, the model building module is specifically configured to:
the model building module is used for collecting fluid pulsation pressure of fluid in the ultra-large caliber axial flow check butterfly valve acting on the surface of the structure and acting force applied to the structure except the fluid pulsation pressure;
the model building module is used for building a dynamic calculation model between the valve structure of the ultra-large-caliber axial flow check butterfly valve and the structural displacement of the ultra-large-caliber axial flow check butterfly valve according to the fluid pulsation pressure and acting force born by the structure except the fluid pulsation pressure;
the model building module is used for building the fluid-solid coupling dynamics model according to the dynamics calculation model.
In some embodiments of the present application, the model building module is specifically configured to:
the model building module is used for building the dynamics calculation model according to the following formula:
wherein M is a mass matrix, C is a damping matrix, K is a stiffness matrix, x is a structural generalized displacement vector, f (t) is fluid pulsation pressure, f 0 (t) is the force to which the structure is subjected in addition to the pulsating pressure of the fluid.
In the embodiment, when the pipeline of the ultra-large-caliber axial flow check butterfly valve normally operates, the valve structure bears the pressure of fluid acting on the solid surface of the valve structure and generates different types of responses to the acting force of the fluid, including static deformation, unstable structure, resonance, random response and flutter.
In some embodiments of the present application, the model building module is specifically configured to:
the model building module is used for respectively setting a mass matrix of the structure, a rigidity matrix of the structure and a damping matrix of the structure according to the dynamics calculation model, and taking the mass matrix of the structure, the rigidity matrix of the structure and the damping matrix of the structure as a first model building set;
the model building module is used for respectively setting a mass matrix of the fluid, a rigidity matrix of the fluid and a damping matrix of the fluid according to the dynamics calculation model, and taking the mass matrix of the structure, the rigidity matrix of the structure and the damping matrix of the structure as a second model building set;
the model building module is used for building the fluid-solid coupling dynamics model according to the first model building set and the second model building set.
In some embodiments of the present application, the model building module is specifically configured to:
the model building module is used for building the fluid-solid coupling dynamics model according to the following formula:
wherein M is s 、K s 、C s Damping matrix of the structure, mass matrix of the structure, stiffness matrix of the structure, M f 、K f 、C f Respectively a mass matrix of the fluid, a stiffness matrix of the fluid and a damping matrix of the fluid, wherein P represents a fluid-solid coupling matrix, U represents a structural node displacement vector, F s Representing the out-of-structure load vector.
In the embodiment, a structural finite element model and an external coupling flow field are established, a pulsating pressure load is loaded on the surface of the finite element model, a complete fluid-solid coupling dynamics model is obtained, and a displacement response of a wet surface of the structure can be obtained by solving a matrix equation through the fluid-solid coupling dynamics model. The invention adopts an arbitrary Lagrangian Euler method (ALE) to solve the problem of coordination of coupling interfaces in fluid-solid coupling, which is caused by non-uniform coordinates. By using Lagrangian units in the solid domain, euler units in the fluid domain, then solving under a unified ALE coordinate system. Load applied to the inner surface of the check butterfly valve.
In the embodiment, based on the algorithm, the vibration analysis of the ultra-large caliber axial flow check butterfly valve under the action of fluid load is carried out, the valve structure vibration rule under the action of complex flow is obtained, the valve flow-induced vibration generation mechanism and the main control influence factors are clarified, the vibration reduction design is carried out on the premise that the structural strength meets the design requirement, the multi-factor optimization design is carried out on the structures of the valve body, the butterfly plate and the valve rod, the eccentric amount, the mass distribution and the like, the influence effect of the structural parameters of each part on the optimization target is evaluated, the optimal design combination is obtained, the valve structure and the reliability design based on the fluid power and the structural mechanics are realized, and the safe and stable operation of the check butterfly valve is realized.
In summary, the embodiment of the invention comprises a data calculation module, a stress analysis module, a model building module and a vibration analysis module, wherein the data calculation module is used for obtaining the temperature parameter of the ultra-large-caliber axial flow check butterfly valve, calculating the structural thermal deformation value of the ultra-large-caliber axial flow check butterfly valve according to the temperature parameter, the stress analysis module is used for carrying out structural stress analysis according to the structural thermal deformation value, the model building module is used for collecting the internal parameter of the ultra-large-caliber axial flow check butterfly valve, and building a fluid-solid coupling dynamics model according to the internal parameter, the vibration analysis module is used for carrying out structural vibration characteristic analysis based on the fluid-solid coupling dynamics model.
In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
Although the invention has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the entire description of these combinations is not made in the present specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Those of ordinary skill in the art will appreciate that: the above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that the present invention is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An analysis system for an ultra-large caliber axial flow check butterfly valve based on vibration control, comprising:
the data calculation module is used for obtaining the temperature parameter of the ultra-large-caliber axial flow check butterfly valve and calculating the structural thermal deformation value of the ultra-large-caliber axial flow check butterfly valve according to the temperature parameter;
the stress analysis module is used for carrying out structural stress analysis on the ultra-large-caliber axial flow check butterfly valve according to the structural thermal deformation value;
the model building module is used for collecting the internal parameters of the ultra-large caliber axial flow check butterfly valve and building a fluid-solid coupling dynamics model according to the internal parameters;
the vibration analysis module is used for analyzing structural vibration characteristics of the ultra-large-caliber axial flow check butterfly valve based on the fluid-solid coupling dynamics model;
the model building module is specifically used for:
the model building module is used for collecting fluid pulsation pressure of fluid in the ultra-large caliber axial flow check butterfly valve acting on the surface of the structure and acting force applied to the structure except the fluid pulsation pressure;
the model building module is used for building a dynamic calculation model between the valve structure of the ultra-large-caliber axial flow check butterfly valve and the structural displacement of the ultra-large-caliber axial flow check butterfly valve according to the fluid pulsation pressure and acting force born by the structure except the fluid pulsation pressure;
the model building module is used for building the fluid-solid coupling dynamics model according to the dynamics calculation model;
the model building module is specifically used for:
the model building module is used for building the dynamics calculation model according to the following formula:
wherein M is a mass matrix, C is a damping matrix, K is a stiffness matrix, x is a structural generalized displacement vector, f (t) is fluid pulsation pressure, f 0 (t) is the force to which the structure is subjected in addition to the pulsating pressure of the fluid;
the model building module is specifically used for:
the model building module is used for respectively setting a mass matrix of the structure, a rigidity matrix of the structure and a damping matrix of the structure according to the dynamics calculation model, and taking the mass matrix of the structure, the rigidity matrix of the structure and the damping matrix of the structure as a first model building set;
the model building module is used for respectively setting a mass matrix of the fluid, a rigidity matrix of the fluid and a damping matrix of the fluid according to the dynamics calculation model, and taking the mass matrix of the structure, the rigidity matrix of the structure and the damping matrix of the structure as a second model building set;
the model building module is used for building the fluid-solid coupling dynamics model according to the first model building set and the second model building set;
the model building module is specifically used for:
the model building module is used for building the fluid-solid coupling dynamics model according to the following formula:
wherein M is s 、K s 、C s A mass matrix of the structure, a stiffness matrix of the structure, a damping matrix of the structure, M f 、K f 、C f Respectively a mass matrix of the fluid, a stiffness matrix of the fluid and a damping matrix of the fluid, wherein P represents a fluid-solid coupling matrix, U represents a structural node displacement vector, F s Representing the out-of-structure load vector.
2. The analysis system for an ultra-large caliber axial flow check butterfly valve based on vibration control of claim 1, wherein the data calculation module is specifically configured to:
the data calculation module is used for obtaining a first temperature of fluid in the ultra-large caliber axial flow check butterfly valve;
the data calculation module is used for obtaining a second temperature of the solid in the ultra-large caliber axial flow check butterfly valve;
the data calculation module is used for calculating a temperature difference value between the first temperature and the second temperature;
and the data calculation module is used for calculating the structural thermal deformation value of the ultra-large caliber axial flow check butterfly valve according to the temperature difference value.
3. The analysis system for an ultra-large caliber axial flow check butterfly valve based on vibration control of claim 2, wherein the data calculation module is specifically configured to:
the data calculation module is used for calculating the structural thermal deformation value of the ultra-large-caliber axial flow check butterfly valve according to the following steps:
wherein f T Is the structural thermal deformation value alpha of the ultra-large caliber axial flow check butterfly valve T For a temperature dependent coefficient of thermal expansion,is the temperature difference.
4. The analysis system for an ultra-large caliber axial flow check butterfly valve based on vibration control of claim 1, wherein the stress analysis module is specifically configured to:
the stress analysis module is used for acquiring the cauchy stress tensor of the ultra-large-caliber axial flow check butterfly valve and the volumetric force vector of the ultra-large-caliber axial flow check butterfly valve;
the stress analysis module is used for calculating a structural mechanical characteristic analysis value of the ultra-large caliber axial flow check butterfly valve according to the cauchy stress tensor and the volumetric force vector;
and the stress analysis module is used for carrying out structural stress analysis on the ultra-large caliber axial flow check butterfly valve according to the structural mechanical property analysis value and the structural thermal deformation value.
5. The analysis system for an ultra-large caliber axial flow check butterfly valve based on vibration control of claim 4, wherein the stress analysis module is specifically configured to:
the stress analysis module is used for calculating the structural mechanical property analysis value according to the following formula:
wherein ρ is s Is a solid-state density of the material,is an acceleration vector; sigma (sigma) s Is the cauchy stress tensor; f (f) s For the volumetric force vector, the structural mechanical property analysis values include solid density and acceleration vectors.
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