초록 ▼

Liquid is removed from a liquid transfer line 1, for example a crude oil pipeline, through a sampling probe 2 and returned to the transfer line 1 via a return loop 3 and pump 5. At the outlet 4 of the return loop to the transfer line the returning liquid enters the liquid in the transfer line as a j

Liquid is removed from a liquid transfer line 1, for example a crude oil pipeline, through a sampling probe 2 and returned to the transfer line 1 via a return loop 3 and pump 5. At the outlet 4 of the return loop to the transfer line the returning liquid enters the liquid in the transfer line as a jet or jets which agitates the liquid to a substantially homogeneous mixture. The outlet 4 is upstream of probe 2 so that in operation the liquid entering the return loop 3 is uniformly mixed and a representative sample may be withdrawn from the return loop 3 into sample outlet through valves 9 and 10. To ensure mixing of sedimentary layers in the transfer line 1 the jet from outlet 4 is directed upwardly into the transfer line.

대표청구항 ▼

A method of obtaining a homogeneous sample from a liquid transfer line in the form of a closed pipe comprising removing liquid from the transfer line and returning it to the transfer line through a return loop including a pump so that it enters the transfer line under the action of the pump as at le

A method of obtaining a homogeneous sample from a liquid transfer line in the form of a closed pipe comprising removing liquid from the transfer line and returning it to the transfer line through a return loop including a pump so that it enters the transfer line under the action of the pump as at least one jet of liquid transverse to the direction of flow through the transfer line to agitate the liquid in the transfer line to a substantially uniform mixture, and removing a sample from the uniform mixture.