发明名称 |
AXIAL ROTIERENDES GETRENNTES VENTURI- VENTIL MIT VERBESSERTEM DURCHFLUSS |
摘要 |
<p>The present invention provides an axially-rotated valve which permits increased flow rates and lower pressure drop (characterized by a lower loss coefficient) by using an axial eccentric split venturi with two portions where at least one portion is rotatable with respect to the other portion. The axially-rotated valve typically may be designed to avoid flow separation and/or cavitation at full flow under a variety of conditions. Similarly, the valve is designed, in some embodiments, to produce streamlined flow within the valve. An axially aligned outlet may also increase the flow efficiency. A typical cross section of the eccentric split venturi may be non-axisymmetric such as a semicircular cross section which may assist in both throttling capabilities and in maximum flow capacity using the design of the present invention. Such a design can include applications for freeze resistant axially-rotated valves and may be fully-opened and fully-closed in one-half of a complete rotation. An internal wide radius elbow typically connected to a rotatable portion of the eccentric venturi may assist in directing flow with lower friction losses. A valve actuator may actuate in an axial manner yet be uniquely located outside of the axial flow path to further reduce friction losses. A seal may be used between the two portions that may include a peripheral and diametrical seal in the same plane. A seal separator may increase the useful life of the seal between the fixed and rotatable portions.</p> |
申请公布号 |
DE69840363(D1) |
申请公布日期 |
2009.01.29 |
申请号 |
DE1998640363 |
申请日期 |
1998.09.04 |
申请人 |
BIGHORN VALVE INC. |
发明人 |
WALRATH, DAVID E.;LINDBERG, WILLIAM R.;BURGESS, ROBERT K.;LA BELLE, JAMES |
分类号 |
F16K3/08;E03B9/02;F16K1/22 |
主分类号 |
F16K3/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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