Remote seal pressure measurement system for subsea use
First Claim
1. A remote seal assembly for subsea applications, the assembly comprising:
- an upper housing having a fluid coupling for coupling the remote seal assembly to a process fluid pressure measurement device;
a lower housing coupled to the upper housing and having an interface that is configured to mount to a pressure vessel, the lower housing also having a process fluid inlet, the lower housing includes a shoulder around the process fluid inlet configured to fit against the pressure vessel and seal the inlet to a pressure tap in the pressure vessel;
an isolation diaphragm disposed between the upper and lower housings; and
wherein at least one of the upper housing, lower housing and isolation diaphragm are constructed from a material suitable for immersion in saltwater; and
the housing includes a hydrate draining feature.
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Accused Products
Abstract
A remote seal assembly for subsea applications is provided. The assembly includes an upper housing having a fluid coupling for coupling the remote seal to a process fluid pressure measurement device. A lower housing is coupled to the upper housing and has an interface that is configured to mount to a pressure vessel. The lower housing also has a process fluid inlet. An isolation diaphragm is disposed between the upper and lower housings. At least one of the upper housing, lower housing and isolation diaphragm are constructed from a material suitable for immersion in saltwater. In some embodiments, the lower housing has a shoulder disposed about the process fluid inlet and a plurality of self-energizing seals configured to couple the assembly to a venturi flow meter body. A subsea process fluid flow measurement system is also provided that includes a pressure transmitter and at least one subsea remote seal assembly.
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Citations
20 Claims
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1. A remote seal assembly for subsea applications, the assembly comprising:
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an upper housing having a fluid coupling for coupling the remote seal assembly to a process fluid pressure measurement device; a lower housing coupled to the upper housing and having an interface that is configured to mount to a pressure vessel, the lower housing also having a process fluid inlet, the lower housing includes a shoulder around the process fluid inlet configured to fit against the pressure vessel and seal the inlet to a pressure tap in the pressure vessel; an isolation diaphragm disposed between the upper and lower housings; and wherein at least one of the upper housing, lower housing and isolation diaphragm are constructed from a material suitable for immersion in saltwater; and the housing includes a hydrate draining feature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A subsea process fluid flow measurement system comprising:
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a venturi flow meter body configured to receive a fluid flow therethrough, the venturi flow meter body having a constricted throat region and a plurality of pressure taps disposed therein; at least one remote seal assembly mounted to a respective pressure tap on the venturi flow meter body, the remote seal assembly comprising; an upper housing having a fluid coupling for coupling the remote seal assembly to a process fluid pressure measurement device; a lower housing coupled to the upper housing and having an interface that is configured to mount to a pressure vessel, the lower housing also having a process fluid inlet; an isolation diaphragm disposed between the upper and lower housings; wherein at least one of the upper housing, lower housing and isolation diaphragm are constructed from a material suitable for immersion in saltwater; a pressure transmitter fluidically coupled to each at least one remote seal assembly; and wherein each remote seal assembly is mounted to the venturi flow meter body by no more than four bolts. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification