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An optimization method for opening holes on the bottom surface of the piston valve core that can overcome the unbalanced moment

A technology of piston valve and optimization method, applied in design optimization/simulation, instrument, calculation, etc., can solve the problems of small universality and lack of force characteristics of the bottom surface of the valve core, so as to overcome the unbalanced moment and avoid theoretical calculation. The effect of checking with experiments, saving time and labor costs

Active Publication Date: 2022-03-22
ZHEJIANG UNIV
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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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  • An optimization method for opening holes on the bottom surface of the piston valve core that can overcome the unbalanced moment
  • An optimization method for opening holes on the bottom surface of the piston valve core that can overcome the unbalanced moment
  • An optimization method for opening holes on the bottom surface of the piston valve core that can overcome the 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 an optimization method for opening holes on the bottom surface of a piston valve core capable of overcoming an unbalanced moment, specifically as follows: a three-dimensional structure original model of a target piston valve is constructed. Using the numerical simulation method, under the maximum opening of the piston valve, the moment M of the inlet side and the outlet side of the bottom surface of the valve core with respect to the Y axis of the longitudinal symmetry axis of the bottom surface of the valve core is calculated i and M o , define the torque unbalance degree of the bottom surface of the valve core as according to the torque unbalance degree δ, respectively design the distribution of openings on the inlet side and the outlet side of the bottom surface of the valve core, so as to change the flow field distribution on the upper and lower surfaces of the bottom surface of the valve core, thereby changing the bottom surface of the valve core The pressure distribution on the upper and lower surfaces achieves the purpose of overcoming the unbalanced moment on the bottom surface of the spool. The present invention utilizes numerical simulation technology, and based on the action mechanism between the unbalanced degree of opening on the bottom surface of the spool and the unbalanced moment of the moment, realizes the purpose of overcoming the unbalanced moment on the bottom surface of the spool, and avoids repeated theoretical calculations and experimental checks. Save time and labor cost.

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 moment. 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 Patents(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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