Abstract
To explore the influence of lift limiter shape of reciprocating compressor on reed-type valve dynamic stress, a one-degree-of-freedom model of valve plate is incorporated with the compressor thermodynamic model, where the former includes the differential equations of the valve plate motion and the latter includes the mass and energy conservation equations for the working medium of air. The fourth-order Runge-Kutta algorithm is used to solve the coupled equations and a corresponding Fortran code is developed. With which, the dynamic pressure difference over the discharge valve plate is predicted. With the obtained dynamic pressure difference over the valve plate acting as input data, the valve plate deformation is predicted with ANSYS/LS-DYNA package. At collision instant of the valve plate and lift limiter, the arc-linear limiter is designed through the curve-fitting of an arc and straight line by allowing for the valve plate deformation. Dynamic stresses of the valve plate are predicted respectively for the newly designed arc-linear limiter and the conventional linear and arc limiters. The numerical results show that the newly designed arc-linear lift limiter significantly reduces the dynamic stress concentration and it is favorable for enhancing the valve plate life span.
| Translated title of the contribution | Numerical Investigation of Reed-type Valve Dynamic Stress With Different Lift Limiter Shapes |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 1528-1534 |
| Number of pages | 7 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 43 |
| Issue number | 6 |
| State | Published - Jun 2022 |
