A Numerical Simulation Method for Spool Opening of Three-way Spring Valve
A numerical simulation and spring valve technology, applied in CAD numerical modeling, electrical digital data processing, special data processing applications, etc., can solve problems such as large manpower and material resources, cumbersome drilling process, and inability to punch holes for testing, etc., to achieve saving The effects of manpower and material resources, reducing the development cycle and cost
Active Publication Date: 2022-05-20
HARBIN ENG UNIV
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Problems solved by technology
Although the corresponding experimental data can be obtained by using the experimental method to measure the position of the valve core, the drilling process is too cumbersome, and the cycle of repeated processing experiments and reprocessing consumes a lot of manpower and material resources. Therefore, it is necessary to use numerical simulation methods to study spring valves. Balance the opening position, and some special cases cannot be punched for testing
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[0032] The present invention is described in more detail below in conjunction with accompanying drawing example:
[0033] combine Figure 1-4 , the concrete steps of the present invention are as follows:
[0034] Step 1, pre-processing of numerical simulation (three-dimensional modeling of spring check valve, extraction of flow field domain, grid division of flow field, turbulent flow model, selection of near-wall function and verification of grid independence).
[0035] The division of the flow field grid in the pre-processing process has a great influence on the convergence and accuracy of the subsequent numerical simulation. The simulation of the flow also has a big impact. The invention considers that different turbulent flow models and functions near the wall have different requirements on the height of the first layer grid, and performs encryption processing on the grid in the boundary layer area near the wall according to the parameters selected by numerical simulatio...
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The purpose of the present invention is to provide a numerical simulation research method for the spool opening of a three-way spring valve. Turbulent flow model, selection of near-wall functions and grid-independent verification; numerical iterative calculation, including preset flow field numerical simulation boundary conditions, unsteady flow field numerical simulation based on dynamic grid technology, spool force balance and simulation Iterative correction of the comparison between the inlet and outlet pressure difference and the experimental data; obtain the opening and position of the valve core under this working condition; repeat the above three steps to obtain the stable opening position of the valve core under different working conditions and flow / pressure , and the corresponding relationship between flow / pressure difference and spool opening is obtained through data fitting. The present invention can study the flow characteristics inside the flow-passing part through CFD simulation, and then can accurately and efficiently solve the balance position of the spring valve spool, which is used to guide the actual design and production of the valve.
Description
technical field [0001] The invention relates to a pipeline simulation method, in particular to a three-way spring valve simulation method. Background technique [0002] The pipeline system includes pumps, valves, pipelines and other components, all of which work together to ensure the safe, stable and economical operation of the whole set of equipment. As an important control component in the pipeline system, the valve can be used to adjust the flow and pressure of the medium in the pipeline, or to cut off and open the flow medium passage. Among them, the main function of the check valve is to cut off the backflow of the medium. The spring check valve plays an important role in the pipeline system. Its function of cutting off the return flow and adjusting the flow distribution is very important for the smooth operation of the pipeline system. Spring check valve is a valve that automatically opens and closes according to the working pressure of the pipeline system. It is ge...
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IPC IPC(8): G06F30/18G06F30/23G06F30/28G06F111/10G06F113/08G06F113/14G06F119/14
CPCG06F30/18G06F30/23G06F30/28G06F2111/10G06F2113/08G06F2113/14G06F2119/14Y02E60/00
Inventor 李玩幽简洁张相元董烈祎孟长霖王曦率志君
Owner HARBIN ENG UNIV