An Analysis of the Neotype Double Corbula-type Throttle Valve

To improve the throttling effect of throttle valve,a new type of double corbula-type throttle valve was introduced.The valve has two holed corbulas which are nested along the same axial line.There are two throttling elements in one throttle valve.A secondary throttling of fluid can be conducted and thus a second-time throttling effect can be achieved.In addition the throttling condition of the throttle valve with two different structures was introduced with the keyholes in the corbula in axial coincidence and forming an angle of 45°with the hole axis.A flow field simulation analysis of the valves with two different structures was conducted.The analysis shows that there is a better throttling effect for the structure with axial misalignment than that with axial coincidence but there is a relatively serious erosion for the former.