초록 ▼

A fugitive emission collection device for acquiring an atmosphere sample around a seal is provided. The emission collection device has a rigid member that forms a low impedance cavity shaped to overlay a seal. The emission collection device has a conduit with an inlet in fluid communications with th

A fugitive emission collection device for acquiring an atmosphere sample around a seal is provided. The emission collection device has a rigid member that forms a low impedance cavity shaped to overlay a seal. The emission collection device has a conduit with an inlet in fluid communications with the low impedance cavity and an outlet that can be connected to a chemical sensing system to analyze the atmosphere sample for emissions leaking from the seal.

대표청구항 ▼

1. A fugitive emission collection device comprising:a rigid member shaped to form a low impedance cavity that overlays a seal, the rigid member having a plurality of substantially equally spaced internal conduits defining discrete locations around an inside perimeter of the rigid member that are in

1. A fugitive emission collection device comprising:a rigid member shaped to form a low impedance cavity that overlays a seal, the rigid member having a plurality of substantially equally spaced internal conduits defining discrete locations around an inside perimeter of the rigid member that are in fluid communication with the low impedance cavity for uniformly sampling atmosphere at the discrete locations proximate to the seal and an outlet in fluid communication with the plurality of internal conduits adapted for fluid communication with an emission detection system that can analyze the atmosphere to detect emissions leaking from the seal. 2. The emission collection device as in claim 1, wherein the rigid member secures a valve stem sealing assembly to a valve body. 3. The emission collection device as in claim 1, wherein the rigid member is further comprised of:a base having recesses formed along a mating surface; anda cover for attachment to the mating surface to create the conduit. 4. The emission collection device as in claim 3 further comprising a gasket for sealing the mating surface. 5. The emission collection device as in claim 3, wherein said conduit has a substantially circular portion and has radial feeds coupling the inlets to the substantially circular portion. 6. The emission collection device as in claim 1 further comprising a gasket for optimizing the impedance of the low impedance cavity by restricting air flow to and from the cavity. 7. The emission collection device as in claim 1 further comprising a gasket that optimizes the wind break capabilities and fugitive emission accumulation by creating impedance to air flow and emission flow. 8. The emission collection device as in claim 1, wherein said inlets each have equal cross sectional areas. 9. The emission collection device as in claim 1, further comprising a cover that optimizes the windbreak capabilities and fugitive emission accumulation by creating impedance to air flow and emission flow. 10. A fugitive emission collection device comprising:a rigid member shaped to form a low impedance cavity that overlays a seal, the rigid member comprising a base having recesses formed along a mating surface and a cover for attachment to the mating surface to create a conduit, the conduit having a plurality of substantially equally spaced inlets defining discrete locations around an inside perimeter of the rigid member in fluid communication with the low impedance cavity for uniformly sampling atmosphere at the discrete locations proximate the seal, and an outlet for fluid communication with an emission detection system that can analyze the atmosphere to detect emissions leaking from the seal. 11. The emission collection device as in claim 10 further comprising a gasket for sealing the mating surface. 12. The emission collection device as in claim 10, wherein said conduit has a substantially circular portion and has radial feeds coupling the inlets to the substantially circular portion. 13. The emission collection device as in claim 12, wherein said inlets each have equal cross sectional areas. 14. The emission collection device as in claim 10 further comprising a gasket that optimizes the wind break capabilities and fugitive emission accumulation by creating impedance to air flow and emission flow. 15. A fugitive emission collection device comprising:a rigid member shaped to form a low impedance cavity that overlays a seal, the rigid member having a substantially circular portion to form a conduit with a plurality of substantially equally spaced radial inlets defining discrete locations around an inside perimeter of the rigid member that are in fluid communication with the low impedance cavity for uniformly sampling atmosphere at the discrete locations proximate the seal, and an outlet for fluid communication with an emission detection system that can analyze the atmosphere to detect emissions leaking from the seal. 16. The emission collection device as in claim 1 5, wherein said inlets each have equal cross sectional areas. 17. The emission collection device as in claim 15, wherein the inlets and the conduit are sized such that a uniform sample of the atmosphere around the seal can be drawn by a chemical detection system.