发明名称 |
DROOP COMPENSATED DIRECT ACTING PRESSURE REGULATOR |
摘要 |
A self-operated droop compensated regulator includes a spring casing (12) and a lower casing, sandwiching a diaphragm (20). The lower casing has axially aligned inlet (22) and outlet ports (24). A one piece cam stem and relief seat (30) is mounted for movement with the diaphragm and includes a first cam surface (33) for directly engaging a movable disk holder (58). The disk holder is movable in a straight line within an orifice tube (50) that supports the valve seat (52). The cam surface moves the disk holder at a nonlinear rate with respect to the diaphragm. The orifice tube has an extension (56) for providing a boost action to the diaphragm. A pressure relief mechanism (44) is incorporated within the upper portion of the diaphragm. A bias spring (64) acts, between a second similar cam surface (34) on the opposite side of the stem and the disk holder, to maintain the first cam surface in contact with the disk holder. |
申请公布号 |
ZA8901498(B) |
申请公布日期 |
1989.12.27 |
申请号 |
ZA19890001498 |
申请日期 |
1989.02.27 |
申请人 |
FISHER CONTROLS INTERNATIONAL, INC. |
发明人 |
DONALD DUANE RICE;MARK ERBY HOOD |
分类号 |
F16K31/165;G05D16/06 |
主分类号 |
F16K31/165 |
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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