Flow based pressure isolation and fluid delivery system including flow based pressure isolation and flow initiating mechanism
First Claim
1. A method of protecting a pressure transducer from fluid pressure damage using a pressure isolation mechanism comprising an inlet port, an isolation port, an internal cavity wherein a free floating, fluid flow responsive valve member is disposed and adapted to engage a seal seat in the internal cavity, a flow initiating mechanism associated with the isolation port, and a retainer retaining the flow initiating mechanism in fluid communication with the isolation port, the method comprising:
- associating the pressure transducer with the isolation port;
placing a pressurizing device for delivering a fluid under pressure in fluid connection with the inlet port;
actuating the pressurizing device to cause fluid flow in the inlet port such that the free floating, fluid flow responsive valve member engages the seal seat to attain a substantially closed position and prevent fluid flow between the inlet port and the isolation port;
wherein upon actuation of the pressure device, the flow initiating mechanism initiates flow around the valve member such that the valve member operates to the substantially closed position upon fluid flow initiation; and
wherein the retainer prevents pressure relief venting of the fluid to atmosphere.
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Accused Products
Abstract
The fluid delivery system includes a pressurizing device for delivering a pressurized injection fluid, a low pressure fluid delivery system, and a pressure isolation mechanism adapted for fluid communication with the pressurizing device and low pressure fluid delivery system. The pressure isolation mechanism includes a housing defining an inlet port, an isolation port, and an internal cavity. The housing defines a seal seat in the internal cavity between the inlet port and isolation port. A valve member is disposed in the internal cavity. The valve member is free floating in the internal cavity and is adapted to engage the seal seat. The valve member has an open position permitting fluid communication between the inlet port and isolation port, and is fluid flow responsive to fluid flow in the inlet port to engage the seal seat and attain a closed position preventing fluid flow between the inlet port and isolation port.
151 Citations
20 Claims
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1. A method of protecting a pressure transducer from fluid pressure damage using a pressure isolation mechanism comprising an inlet port, an isolation port, an internal cavity wherein a free floating, fluid flow responsive valve member is disposed and adapted to engage a seal seat in the internal cavity, a flow initiating mechanism associated with the isolation port, and a retainer retaining the flow initiating mechanism in fluid communication with the isolation port, the method comprising:
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associating the pressure transducer with the isolation port; placing a pressurizing device for delivering a fluid under pressure in fluid connection with the inlet port; actuating the pressurizing device to cause fluid flow in the inlet port such that the free floating, fluid flow responsive valve member engages the seal seat to attain a substantially closed position and prevent fluid flow between the inlet port and the isolation port; wherein upon actuation of the pressure device, the flow initiating mechanism initiates flow around the valve member such that the valve member operates to the substantially closed position upon fluid flow initiation; and wherein the retainer prevents pressure relief venting of the fluid to atmosphere. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of protecting a pressure transducer from fluid pressure damage using a pressure isolation mechanism comprising an inlet port, an isolation port, an internal cavity wherein a free floating, fluid flow responsive valve member is disposed and adapted to engage a seal seat in the internal cavity, a flow initiating mechanism comprising a flow initiating member associated with the isolation port, and a retainer retaining the flow initiating mechanism in fluid communication with the isolation port, the method comprising:
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associating the pressure transducer with the isolation port; placing a pressurizing device for delivering a fluid under pressure in fluid connection with the inlet port; actuating the pressure device to cause fluid flow in the inlet port such that the free floating, fluid flow responsive valve member engages the seal seat to attain a substantially closed position and prevent fluid flow between the inlet port and the isolation port; wherein the flow initiating member provides upstream capacitance to initiate fluid flow around the valve member such that the valve member operates to the substantially closed position upon fluid flow initiation and operates to an open position upon fluid flow cessation; and wherein the retainer prevents pressure relief venting of the fluid to atmosphere. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification