发明名称 |
Testing a solenoid of a directional control valve |
摘要 |
There is disclosed a method of testing a solenoid (1) of a directional control valve in a subsea hydrocarbon production system, the solenoid having a coil and an armature for 5 operating the valve. The coil is energised by a drive voltage across it, the method comprising removing or reducing the drive voltage and sensing current through the coil to produce an indication (10) of movement of the armature. (Fig. 1) PROCESSOR DRIVER CU= = H SO=DC |
申请公布号 |
AU2012200868(A1) |
申请公布日期 |
2012.09.06 |
申请号 |
AU20120200868 |
申请日期 |
2012.02.15 |
申请人 |
VETCO GRAY CONTROLS LIMITED |
发明人 |
DAVIS, JULIAN;STOKES, MARTIN |
分类号 |
E21B31/06;F16K31/10 |
主分类号 |
E21B31/06 |
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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