Samplers AKP (PSRA) and PSRP (PSRA-P)

Samplers - one of the bright representatives of components, installed inside the tanks. The main purpose of this equipment is to control the quality of the product (oil, gasoline, kerosene, oils, etc.) in each of its specific layers. Depending on the technological characteristics of the tanks and the parameters of the stored product, it is customary to distinguish - sectional samplers PSD, PSRL, PSRa2SS, stationary PSP, PSPP, lowered three-level PRS and PRSP, and various types of manual samplers such as PO-1 or PO-2.

We will consider the types of samplers most frequently used in the oil and gas industry - these are the AKP (PSA-analog) and the PSRS (PSRA-P - analog).

Sectional samplers AKP (AKPa) serve as the main sampling device of the product located in the tanks of normal and high pressure with a fixed roof throughout its height.

Sectional samplers PSRP (PSAR-P) serve as the main sampling device of the product in tanks of normal and elevated pressure with a pontoon over its entire height.

Despite the fact that the AKP and the PSRS are installed in various reservoir systems (with or without a pontoon), both have the same technical characteristics, including a conditional pass diameter of 15 mm ; The sample volume per 1 meter of the sampling column is 0.15 L; The sampling time is 5 minutes and so on. Differences are seen only in the overall dimensions of the installations and their mass.

The main point to pay special attention to is the number of sections of sampling elements that differ depending on the volume of the tank and its height.

The main constructive elements of the above types of samplers are: bracket, receiving unit, lower, middle and upper sections, drain cock with a branch pipe, fence, control unit.

The principle of operation of the samplers AKP (PSB) and PSDP (PSRA-P) is very simple and consists in the following. At the time of sampling, the handle of the control unit is turned to the right until it stops. The resulting turning force is transmitted through the shaft to the drive arm of the lower sections, which ultimately leads to the opening (closing) of the ball valves of all sections. This process, in turn, is accompanied by the alignment of the through holes of the ball valves with the side openings of the shells. This simultaneously overlaps the top and opens the lower holes. The product sample, entering through the ball valves, fills each section of the sampler independently of each other.

At the moment of turning the handle of the control unit to the left until it stops, the through holes of the ball valves are aligned with the lower and upper openings of the bodies. This closes the side openings, and the sample is cut off from the main product, after which it is mixed and enters a special flask. The composition of the sample selected in this way corresponds to the composition of the product in the tank system.

Of particular interest is the maintenance of samplers. So, before the operation, the receiving unit, the drain cock with the branch pipe and the control unit for visual inspection of the product leak through the stuffing seals and gaskets are subject to visual inspection. Non-sealed connections are brought to a proper state by tightening the nuts. In addition, the preventive examination is performed no less than twice a calendar month - in the spring-summer period, and every ten days - in the autumn-winter period. During preventive inspections, the contaminants that are formed on the sampler parts due to natural factors, by washing them with gasoline, kerosene and blowing with compressed air, are to be removed. All operations for mounting (dismantling), replacement of certain structural elements are carried out only with the use of intrinsically safe (anti-spark) tools with copper coating.

The common lifetime of the samplers of the AKP (PSA) and PSDP (PSAR-P) is 9 years.