초록 ▼

A filtering device well adapted for filtering moisture from a natural gas stream is formed by a tubular housing containing a bed of particulate material, such as gravel. In one embodiment, particulate material is positioned in an upper portion of the housing and a liquid reservoir is provided in a l

A filtering device well adapted for filtering moisture from a natural gas stream is formed by a tubular housing containing a bed of particulate material, such as gravel. In one embodiment, particulate material is positioned in an upper portion of the housing and a liquid reservoir is provided in a lower portion of the housing. In another embodiment, the housing is packed full of particulate material and the liquid reservoir is provided by a boot depending from the housing.

대표청구항 ▼

Apparatus comprising a. a tubular vessel formed by an sidewall having a longitudinal axis, an inside surface, an outside surface, a top side, and a bottom side, a first end and a second end with an inlet at the first end and an outlet at the second end; b. a first perforated baffle forming a partiti

Apparatus comprising a. a tubular vessel formed by an sidewall having a longitudinal axis, an inside surface, an outside surface, a top side, and a bottom side, a first end and a second end with an inlet at the first end and an outlet at the second end; b. a first perforated baffle forming a partition across the inside surface of the vessel positioned adjacent to the first end; c. a second perforated baffle forming a partition across the inside surface of the vessel positioned adjacent to the second end, a filter chamber being defined by the first perforated baffle, the second perforated baffle and the inside surface of the sidewall of the tubular vessel; d. a bed of particulate filter material filling the filter chamber; and e. means for defining at least one liquid reservoir connected to the outside surface of the sidewall on the bottom side of the tubular vessel, said vessel having at least one drain extending through the sidewall forming a liquid flow path between the filter chamber and each said at least one liquid reservoir; said apparatus further comprising a means for forming a low path extending from the at least one means for defining the at least one liquid reservoir; a valve operably associated with the means for forming a flow path; a level control switch operably associated with the at least one means for defining the liquid reservoir and the valve so as to open and close the valve responsively to predetermined upper and lower liquid levels in the at least one liquid reservoir; wherein the means for defining the at least one liquid reservoir comprises a first tubular member extending generally radially away from the longitudinal axis of the tubular vessel, said first tubular member having a first end and a second end, the first end being connected to the sidewall of the tubular vessel; a first end closure positioned on the second end of the first tubular member; a second tubular member extending generally radially away from the longitudinal axis of the tubular vessel in a direction generally parallel to the first tubular member, said second tubular member having a first end and a second end, the first end being connected to the sidewall of the tubular vessel, said second tubular member being spaced apart from the first tubular member; and a second end closure positioned on the second end of the second tubular member; wherein the means for forming a flow path comprises a first conduit forming a flow path between the second end of the first tubular member and the second end of the second tubular member; and a second conduit forming a flow path between the first conduit and the valve; wherein the first tubular member and the first end closure form a first boot, the second tubular member and the second end closure form a second boot, and the liquid level control switch is operably associated with the first boot so as to control the liquid level therein.