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Piston type valve core bottom surface trepanning optimization method capable of overcoming unbalanced moment

A piston valve and optimization method technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve the problems of small universality, lack of force characteristics on the bottom surface of the valve core, etc., to overcome unbalanced torque, The effect of avoiding theoretical calculation and experimental verification, saving time and labor costs

Active Publication Date: 2021-06-25
ZHEJIANG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

This design method is mainly aimed at optimizing the outer contour of the spool, and lacks attention to the force characteristics of the bottom surface of the spool, so it is less universal

Method used

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  • Piston type valve core bottom surface trepanning optimization method capable of overcoming unbalanced moment
  • Piston type valve core bottom surface trepanning optimization method capable of overcoming unbalanced moment
  • Piston type valve core bottom surface trepanning optimization method capable of overcoming unbalanced moment

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Embodiment Construction

[0028] The present invention will be further elaborated and illustrated below in conjunction with the accompanying drawings and specific embodiments. The technical features of the various implementations in the present invention can be combined accordingly on the premise that there is no conflict with each other.

[0029] The invention provides a method for optimizing the opening of the bottom surface of the piston valve core that can overcome the unbalanced moment, mainly for the optimization method of the opening of the bottom surface of the valve core of the pilot piston valve, as follows:

[0030] S1: According to the design file of the target pilot piston valve to be optimized, the original three-dimensional structural model of the target pilot piston valve is constructed through three-dimensional modeling software.

[0031] In actual application, the design document needs to include the composition information and operating condition information of the target piston valv...

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Abstract

The invention discloses a piston type valve core bottom surface trepanning optimization method capable of overcoming unbalanced moment. The piston type valve core bottom surface trepanning optimization method specifically comprises the following steps: constructing a three-dimensional structure original model of a target piston type valve; and by means of a numerical simulation method, under the maximum opening degree of the piston type valve, calculating to obtain the moment Mi and the moment Mo of the inlet side and the outlet side of the bottom face of the valve element relative to the longitudinal symmetry axis Y of the bottom face of the valve element, defining the moment unbalance degree of the bottom face of the valve element as the moment unbalance degree delta, and designing hole distribution of the inlet side and the outlet side of the bottom face of the valve element, so that the pressure distribution of the upper surface and the lower surface of the bottom surface of the valve core is changed, and the purpose of overcoming the unbalanced torque of the bottom surface of the valve core is achieved. The numerical simulation technology is utilized, the purpose of overcoming the unbalanced torque of the bottom face of the valve element is achieved on the basis of the action mechanism between the valve element bottom face hole opening unbalance degree and the torque unbalance degree, repeated theoretical calculation and experimental verification are avoided, and time and labor cost are saved.

Description

technical field [0001] The invention relates to a design method for opening holes on the bottom surface of a valve core, in particular to an optimization method for opening holes on the bottom surface of a piston type valve core capable of overcoming unbalanced moments. Background technique [0002] In a horizontally arranged valve with a piston-type spool structure, the force on the bottom surface of the spool shows an obvious unbalanced phenomenon, and the pressure on the lower surface of the spool bottom near the fluid outlet side is greater than that near the fluid inlet side. , the unbalanced pressure distribution causes an unbalanced moment at the bottom surface of the spool, and the unbalanced moment is mainly manifested as a moment imbalance about the longitudinal axis of symmetry on the bottom surface of the spool. The existence of unbalanced torque makes the piston valve core have a tendency to turn sideways, which eventually causes the wall of the valve core to be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F30/23G06F113/08G06F119/14
CPCG06F30/28G06F30/23G06F2113/08G06F2119/14
Inventor 钱锦远母娟赵磊金志江
Owner ZHEJIANG UNIV
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