System and method for generating a change in pressure proportional to fluid viscosity

摘要

A system and method for generating a change in pressure proportional to fluid viscosity is disclosed herein. The system can comprise a first pilot stream, a second pilot stream, and a pressure sensing device that reads a differential pressure across a first junction on the first pilot stream and a second junction on the second pilot stream. The first junction is between a first section having a first predominant pressure loss characteristic, and a second section having a second predominant pressure loss characteristic. Similarly, the second junction can be between a third section having a third predominant pressure loss characteristic and a fourth section having a fourth pressure loss characteristic.

主权项

1. A viscosity dependent pressure differential system comprising
a first pilot stream connectable to a main stream, said first pilot stream comprising
a first inlet connected to said main stream;a first section comprising a first predominate pressure loss characteristic, connected to said first inlet;a first junction connected to said first section;a second section comprising a first predominate pressure loss characteristic, connected to said first junction; anda first outlet that connects said second section and to said main stream; a second pilot stream connectable to a main stream, said second pilot stream comprising
a second inlet connected to said main stream;a third section comprising a third predominate pressure loss characteristic, connected to said tinlet;a second junction connected to said third section;a fourth section comprising a fourth predominate pressure loss characteristic, connected to said third junction; anda second outlet that connects said second section and to said main stream; and a pressure sensing device connecting that reads a differential pressure across said first junction and said second junction.