发明名称 |
PERFECCIONAMIENTOS EN SERVOMOTORES NEUMATICOS. |
摘要 |
<p>The servomotor is constructed in one embodiment with a partition which forms a constriction through which air is throttled during an emergency closing of the valve. The constriction is formed with a flow resistance equivalent to a free cross-sectional area of not more than 0.02D2; D being the inside diameter of the cylinder. In addition, the chamber defined between the piston and the partition is not more than 10% of the combined volume of this chamber and a pressurized chamber below the partition. In another embodiment, the pressurized chamber may be formed by a pressure tank which is connected via a line which forms a constriction to the chamber below the piston. In still another embodiment, a spherical pressure tank may be secured about a cup-shaped cylinder to form the pressurized chamber while radial grooves in a flange of the cylinder form a constriction with a cover secured to the cylinder and spherical tank.</p> |
申请公布号 |
ES519592(D0) |
申请公布日期 |
1984.03.16 |
申请号 |
ES19920005195 |
申请日期 |
1983.02.07 |
申请人 |
SULZER FRERES, SOCIETE ANONYME |
发明人 |
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分类号 |
F16K31/12;F01D17/14;F16K31/122;F16K31/42;F16K47/00;(IPC1-7):16K31/124 |
主分类号 |
F16K31/12 |
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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