SUBSEA VALVE POSITION INDICATOR
A valve position indicator is for reading the position of a valve shutter of a valve associated to the valve position indicator. In an embodiment, the valve position indicator includes a body; at least two linear sensors; and a coupling device for coupling the valve position indicator to the valve in such a way that the at least two linear sensors are adjacent to a travelling path of a magnet attached to the valve shutter.
1 . A valve position indicator for reading a position of a valve shutter of a valve associated to the valve position indicator, the valve position indicator comprising:
a body;
at least two linear sensors; and
a coupling device to couple the valve position indicator to the valve such that the at least two linear sensors are adjacent to a linear travelling path of a magnet of the valve connected to the valve shutter.
2 . The valve position indicator of claim 1 , wherein the at least two linear sensors are a series of resistors connected to parallel coupled reed switches.
3 . The valve position indicator of claim 1 , wherein the body includes a cavity, the travelling path being defined inside the cavity.
4 . The valve position indicator of claim 1 , wherein the body includes an external surface, the travelling path being defined adjacent to the external surface.
5 . The valve position indicator of claim 3 , wherein the travelling path is equidistant from the at least two linear sensors.
6 . The valve position indicator of claim 4 , wherein, in operation, the external surface is interposed between the travelling path and the at least two linear sensors.
7 . The valve position indicator of claim 1 , wherein the at least two linear sensors are arranged in parallel.
8 . The valve position indicator of claim 7 , wherein the travelling path is parallel to the at least two linear sensors.
9 . A valve for subsea application, comprising:
the valve position indicator of claim 1 .
10 . The valve of claim 9 , further comprising a linear shutter.
11 . The valve position indicator of claim 2 , wherein the body includes a cavity, the travelling path being defined inside the cavity.
12 . The valve position indicator of claim 2 , wherein the body includes an external surface, the travelling path being defined adjacent to the external surface.
13 . The valve position indicator of claim 4 , wherein the travelling path is equidistant from the at least two linear sensors.
14 . The valve position indicator of claim 11 , wherein the travelling path is equidistant from the at least two linear sensors.
15 . The valve position indicator of claim 12 , wherein the travelling path is equidistant from the at least two linear sensors.
16 . The valve position indicator of claim 12 , wherein, in operation, the external surface is interposed between the travelling path and the at least two linear sensors.
17 . A valve for subsea application, comprising:
the valve position indicator of claim 2 .
18 . The valve of claim 17 , further comprising a linear shutter.
19 . A valve for subsea application, comprising:
the valve position indicator of claim 3 .
20 . The valve of claim 19 , further comprising a linear shutter.