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An optimization method for the throttling window of the sleeve of the main feedwater regulating valve

A throttling window and optimization method technology, applied in multi-objective optimization, design optimization/simulation, valve device, etc., can solve the problem of affecting the control accuracy of the main feedwater regulating valve, increasing the friction between the valve core and the sleeve, and hindering the valve core. Movement and other issues, to achieve the effect of saving manpower and material resources, reducing unbalanced torque, and improving control accuracy

Active Publication Date: 2022-03-18
ZHEJIANG UNIV +1
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AI Technical Summary

Problems solved by technology

This unbalanced moment will cause the valve core to overturn and increase the friction between the valve core and the sleeve. On the one hand, it will damage the sealing surface between the valve core and the sleeve, and on the other hand, it will hinder the movement of the valve core. Affect the control accuracy of the main feedwater regulating valve

Method used

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  • An optimization method for the throttling window of the sleeve of the main feedwater regulating valve
  • An optimization method for the throttling window of the sleeve of the main feedwater regulating valve
  • An optimization method for the throttling window of the sleeve of the main feedwater regulating valve

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Embodiment 1

[0064] This embodiment provides a method for optimizing the throttling window of the main feedwater regulating valve sleeve that can overcome the unbalanced moment of the spool. The implementation steps are as follows:

[0065] S1: According to the original main feedwater regulating valve design documents, construct the original three-dimensional structural model of the main feedwater regulating valve in the 3D modeling software. Such as figure 1 As shown, the original three-dimensional structure original model of the original main feedwater regulating valve includes valve stem 1, valve cover 2, gasket 3, valve core 4, sleeve 5 and valve body 6, which can clearly reflect the original main feedwater regulation The structure of each part of the valve.

[0066] The design documents include the composition information and operating condition information of the main feedwater regulating valve. The composition information includes the structure and size of the main feedwater regula...

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Abstract

The invention discloses an optimization method for the throttling window of the sleeve of the main water supply regulating valve, which is specifically as follows: constructing the original three-dimensional structure model of the target main water supply regulating valve; Each throttling window is assigned serial numbers; according to the parity of n, for tw i Optimize; through the 3D modeling software gradually increase |δ|, w c =w cmin When |δ| is recorded as |δ| max ; Establish the three-dimensional structure model of the main feedwater regulating valve corresponding to different δ and the spool is adjusted to the maximum opening; through the computational fluid dynamics software, the unbalanced moment produced by the spool under different δ by fluid impact M; the minimum unbalanced moment M min The corresponding δ is used as the optimized throttling window unbalanced arrangement degree δ o ,δ o The corresponding sleeve structure is an optimized sleeve structure. The present invention is based on numerical simulation technology, avoids repeated calculation of theoretical formulas and experimental checking process, and saves manpower and material resources consumption.

Description

technical field [0001] The invention relates to a method for optimizing the throttling window of a valve sleeve, in particular to an optimization method for the throttling window of the sleeve of a main feedwater regulating valve, and the method is used to overcome the unbalanced moment of the valve core. Background technique [0002] The main feedwater regulating valve is an important part of the water level control system of the pressurized water reactor nuclear power plant. It is used to adjust the feedwater flow into the steam generator, so as to maintain the water level in the steam generator at an appropriate height. The water level in the steam generator largely determines the safety and economics of a nuclear power plant. The heat-carrying medium from the reactor in the primary circuit continuously inputs heat into the steam generator, and the medium water in the secondary circuit whose flow rate is controlled by the main feed water regulating valve absorbs heat and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/28G06F30/17G06T17/20F16K3/24G06F111/06G06F111/10G06F113/08G06F119/14
CPCG06F30/23G06F30/28G06F30/17G06T17/20F16K3/246G06F2113/08G06F2119/14G06F2111/10G06F2111/06
Inventor 钱锦远岳阳吴嘉懿刘平李军业吴辉金志江
Owner ZHEJIANG UNIV
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