CN-121997808-A - Method and device for determining valve core structure of regulating valve

CN121997808ACN 121997808 ACN121997808 ACN 121997808ACN-121997808-A

Abstract

The application belongs to the technical field of uranium enrichment, and particularly relates to a method and a device for determining a valve core structure of an adjusting valve. The method comprises the steps of obtaining a valve core structural design model which is obtained in advance, training the valve core structural design model according to a sample set which is obtained in advance, inputting the corresponding relation between the target opening degree and the target flow coefficient of the regulating valve into the valve core structural design model to obtain the valve core radius of the regulating valve under the target opening degree, wherein the sample set comprises one-to-one corresponding relation among the opening degree, the flow coefficient and the valve core radius, and the sample set is obtained according to the three-dimensional model simulation of the regulating valve. The embodiment of the application obviously improves the design efficiency while ensuring the calculation precision, thereby being capable of effectively supporting the specialized and serial design requirements of the uranium enrichment plant regulating valve under different working conditions.

Inventors

YANG CHANGHUA
LV BOWEN
WAN YU
CHEN YONGHAN
TANG JIAN
WANG PENG
Fan Zengzu
JIN XIAODONG
GUAN CHENGMING
WANG JINXING

Assignees

中核陕西铀浓缩有限公司

Dates

Publication Date: 20260508
Application Date: 20251231

Claims (10)

1. A method for determining a valve core configuration of a regulator valve, the method comprising: acquiring a valve core structural design model which is obtained in advance, wherein the valve core structural design model is obtained by training according to a sample set which is obtained in advance; Inputting the corresponding relation between the target opening degree and the target flow coefficient of the regulating valve into the valve core structural design model to obtain the valve core radius of the regulating valve under the target opening degree; The sample set comprises a one-to-one correspondence relation among opening, flow coefficient and valve core radius, and is obtained through simulation according to a three-dimensional model of the regulating valve.
2. The method for determining the valve core structure of an adjusting valve according to claim 1, wherein the sample set is obtained according to the steps of: The three-dimensional model of the regulating valve is obtained, and the three-dimensional model is determined according to the corresponding relation between the expected opening and the flow coefficient; Acquiring a sample opening and a sample valve core radius; And inputting the sample opening and the sample valve core radius into the three-dimensional model, and deducing a corresponding flow coefficient to obtain the sample set.
3. The method for determining the valve core structure of a regulating valve according to claim 2, wherein the three-dimensional model of the regulating valve is obtained according to the steps of: Dividing the strokes [0, L ] of the valve core of the regulating valve into n discrete opening degrees L i , and obtaining a flow coefficient Kv i corresponding to each opening degree L i , wherein L is the maximum stroke of the valve core, n is a positive integer, i=1, 2, and n; according to the physical relationship between the flow coefficient and the throttle area, reversely pushing the valve core radius r i corresponding to the opening l i ; And building the three-dimensional model according to the valve core radius r i under each opening degree l i .
4. The method for determining a valve spool configuration of a regulating valve of claim 3, wherein the obtaining a sample opening and a sample spool radius specifically comprises: Determining a valve core radius sampling interval of each opening l i according to the valve core radius r i under each opening l i ; and taking each opening l i as the sample opening, sampling from a corresponding valve core radius sampling interval by using Latin hypercube sampling, and taking the sample valve core radius as the corresponding sample valve core radius.
5. The method for determining a valve core structure of an adjusting valve according to any one of claims 1 to 4, wherein the valve core structure design model is obtained by: and training a BP neural network proxy model by using the sample set, and establishing a rapid mapping relation from the valve core radius to the flow coefficient to obtain the valve core structural design model.
6. The method for determining the valve core structure of a regulating valve according to claim 5, wherein in the process of training a BP neural network proxy model, optimal fitness particles of each generation are screened out according to elite retention criteria, and verification is performed by using the three-dimensional model.
7. The method for determining a valve core structure of an adjusting valve of claim 6, wherein said validating with said three-dimensional model is followed by: and updating the sample set and the BP neural network proxy model according to the data obtained through verification.
8. An apparatus for determining a valve core configuration of a regulator valve, the apparatus comprising: the valve core structure design model is obtained by training a sample set obtained in advance; The radius acquisition module is used for inputting the corresponding relation between the target opening degree of the regulating valve and the target flow coefficient into the valve core structural design model to obtain the valve core radius of the regulating valve under the target opening degree; The sample set comprises a one-to-one correspondence relation among opening, flow coefficient and valve core radius, and is obtained through simulation according to a three-dimensional model of the regulating valve.
9. A computer readable storage medium having stored thereon computer code which, when executed, implements a method for determining a regulator valve spool structure as claimed in any of claims 1-7.
10. A controller comprising a memory and a processor, wherein the memory has computer code stored thereon, and wherein the processor, when executing the computer code, implements a method for determining a valve core structure of a regulating valve as claimed in any one of claims 1 to 7.

Description

Method and device for determining valve core structure of regulating valve Technical Field The application belongs to the technical field of uranium enrichment, and particularly relates to a method and a device for determining a valve core structure of an adjusting valve. Background The regulating valve is a key regulating device for precisely controlling pressure and flow in the uranium enrichment system, and the performance of the regulating valve is directly related to the running stability and safety of the whole system. Because of the specificity of uranium enrichment process media and the high sensitivity of the host to pressure fluctuations, the system has extremely higher performance requirements for regulating valves than common industry standards. At present, the valve core of a special regulating valve meeting the extreme performance requirements is not good in matching with the target flow characteristics, so that the key performances such as regulating precision, stability and dynamic response cannot completely meet the regulating requirements, and the requirements of the future cascade system on the control performance are difficult to adapt to the higher requirements of the large-scale expansion. The traditional valve core design method is mainly iterated based on the flow area principle, highly depends on manual experience and trial and error adjustment, has long design period and high cost, is difficult to find a global optimal solution in a complex multi-parameter design space, and becomes a bottleneck for restricting the autonomous development of high-performance valves of uranium enrichment plants. Disclosure of Invention The application aims to provide a method and a device for determining the valve core structure of a regulating valve, which solve the problem that the valve core of a special regulating valve meeting the extreme performance requirement in the prior art is not good in matching with the target flow characteristic. The technical scheme for realizing the purpose of the application comprises the following steps: A first aspect of an embodiment of the present application provides a method for determining a valve core structure of an adjusting valve, the method including: acquiring a valve core structural design model which is obtained in advance, wherein the valve core structural design model is obtained by training according to a sample set which is obtained in advance; Inputting the corresponding relation between the target opening degree and the target flow coefficient of the regulating valve into the valve core structural design model to obtain the valve core radius of the regulating valve under the target opening degree; The sample set comprises a one-to-one correspondence relation among opening, flow coefficient and valve core radius, and is obtained through simulation according to a three-dimensional model of the regulating valve. Optionally, the sample set is obtained according to the following steps: The three-dimensional model of the regulating valve is obtained, and the three-dimensional model is determined according to the corresponding relation between the expected opening and the flow coefficient; Acquiring a sample opening and a sample valve core radius; And inputting the sample opening and the sample valve core radius into the three-dimensional model, and deducing a corresponding flow coefficient to obtain the sample set. Optionally, the three-dimensional model of the regulating valve is obtained according to the following steps: Dividing the strokes [0, L ] of the valve core of the regulating valve into n discrete opening degrees L i, and obtaining a flow coefficient Kv i corresponding to each opening degree L i, wherein L is the maximum stroke of the valve core, n is a positive integer, i=1, 2, and n; according to the physical relationship between the flow coefficient and the throttle area, reversely pushing the valve core radius r i corresponding to the opening l i; And building the three-dimensional model according to the valve core radius r i under each opening degree l i. Optionally, the acquiring the sample opening and the sample valve core radius specifically includes: Determining a valve core radius sampling interval of each opening l i according to the valve core radius r i under each opening l i; and taking each opening l i as the sample opening, sampling from a corresponding valve core radius sampling interval by using Latin hypercube sampling, and taking the sample valve core radius as the corresponding sample valve core radius. Optionally, the valve core structural design model is obtained through the following steps: and training a BP neural network proxy model by using the sample set, and establishing a rapid mapping relation from the valve core radius to the flow coefficient to obtain the valve core structural design model. Optionally, in the process of training the BP neural network proxy model, the optimal fitness particles of each generatio