초록 ▼

A piston-type portable sample cylinder is provided suitable for obtaining and transporting a liquified petroleum gas sample taken from a flow line. A piston slidable in a cylinder creates an increasing volume for the sample, and displaces an opposing inert gas maintained in the sample cylinder at a

A piston-type portable sample cylinder is provided suitable for obtaining and transporting a liquified petroleum gas sample taken from a flow line. A piston slidable in a cylinder creates an increasing volume for the sample, and displaces an opposing inert gas maintained in the sample cylinder at a present pressure. A toroidal mixing element has an outer diameter approximating the inner diameter of the cylinder, and slides over a cylinder projection on the piston to minimize voids when the sample cylinder is empty. The piston may be provided with a selectively adjustable seal for maintaining sealing integrity over a long life, with or without the use of lubricants. Magnets on the piston for activating external magnetic trip flags may be contained in a nylon protector ring. Precision fill measurements may be obtained from a sight gauge including a biased coiled tape mounted within the pressurized inert gas cavity of the sample cylinder and secured to one end of the piston.

대표청구항 ▼

A portable sampler for collecting and transporting a fluid sample, including a cylindrical tube having a uniform inner diameter and defining a sampler axis, a sample end cap at one end of the tube and a charge end cap at the other end of the tube, a piston having a sample facing surface and a charge

A portable sampler for collecting and transporting a fluid sample, including a cylindrical tube having a uniform inner diameter and defining a sampler axis, a sample end cap at one end of the tube and a charge end cap at the other end of the tube, a piston having a sample facing surface and a charge facing surface and slidable within the tube for defining a sample chamber between the sample end cap and the piston, and a charge chamber between the charge end cap and the piston, a sample input port in the sample end cap for introducing the fluid sample to the sample chamber, and a charge port in the charge end cap for inputting and releasing gas from the charge chamber, the sampler further comprising: a housing secured to the charge end cap and having a passageway in fluid communication with the charge chamber via the charge port; a coiled tape mounted to the housing and having one end extending through the charge end cap and secured to the piston; and detection means for determining the position of the tape relative to the housing and thus the axial position of the piston within the tube.