RU2497094C2 - Sectional sampler for reservoirs - Google Patents

Abstract

FIELD: testing equipment.

SUBSTANCE: sampler relates to a sampling device in liquid and fluid condition, namely, to samplers for semi-automatic sampling along the entire height of the reservoir with oil products. The sectional sampler comprises a sampling column, a system of three-way valve control in the form of connecting traction rods and yokes connected into a parallelogram. Sections of sampling pipes are assembled by means of their installation into bores of three-way valves and are fixed by captive nuts with a seal. Besides, a worm gear is installed on the axis connected to a master yoke.

EFFECT: higher operational characteristics and service life of a sampler due to reduction of labour intensiveness of its assembly during installation and repair.

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Description

This technical solution relates to the field of obtaining and preparing samples for research, in particular to devices for sampling in liquid and fluid state, namely, to samplers for semi-automatic sampling along the entire height of the tank with oil products.

A known sampler of the PSR type (Developer VNIIKANEFTEGAZ. Prospect "Devices and means of automation" ONTIPRIBOR, Moscow, 1967).

The disadvantage of these samplers is the inability to obtain the actual composition of the product from the underlying sections due to the overlapping of the upper sections with air.

The closest both in principle of operation and in technical design to the claimed solution is “Sampler for sampling from reservoirs with oil products” (patent No. 2132994, IPC 6 F16N 1/10, 1999), containing a sampling column, three-way control system cranes in the form of connecting rods and rockers connected in parallelogram.

The sampling column consists of sections with three-way valves, the number of which depends on the height of the tank. The sections are interconnected by flanges with gaskets for sealing.

Sampler according to US Pat. No. 2132994 has the following disadvantages:

- installation and repair of the sampler with a flange connection of sections is associated with great complexity and lack of reliability;

- with a large height of the tank, a large number of sections and three-way valves, high viscosity of the product on the lever of the control system there is a significant effort. These shortcomings reduce the performance of the sampler.

The objective of the proposed technical solution is to increase the operational characteristics of the sampler by reducing the complexity of the Assembly (disassembly) of the sampler, as well as reduce the effort of rotation of the taps with a significant height of the tanks.

The problem is achieved in that in the sampler containing the sampling column, the three-way valve control system in the form of connecting rods and yokes connected in a parallelogram, the sections of the sampling pipes are installed in the grooves of the three-way valves and fixed with union nuts with a seal, and on the shaft connected to the lead rocker mounted worm gear. This technical solution is illustrated by drawings, where:

figure 1 presents a General view of the sampler;

figure 2 is a view along arrow A;

figure 3 - installation of sections of the sampling pipe, view B;

figure 4 - connecting rods and rocker, view B

The sectional sampler contains a sampling column 1 consisting of sections 2 of sampling pipes installed in the grooves of three-way valves 3 and secured with union nuts 4 through a seal 5. The control device 6 is made in the form of connecting rods 7 and a rocker arm 8 connected in parallelogram, with the leading beam 8 connected through a shaft 9 with a worm gear 10. The sampler is located inside the tank 11 and is attached to its body by the sampling column 1 in several places. Mandatory attachment points are the hatch 12, located in the upper part of the tank 11 and the drain device 13, located in the lower part of the tank 11. Through the hatch 12, the sampling column 1 communicates with the gas space of the tank 11. If the height of the sampling column 1 is significant, then to protect it from displacement and to increase the rigidity of the structure, it is attached to the body of the tank 11 in several places.

The sampler works as follows.

In the initial state, the position of the helm of the worm gear 10 corresponds to the position: three-position valves 3 are closed from the component located in the tank.

For sampling, it is necessary to turn the helm of the worm gear 10 to the "Sampling" position. All three-way valves 3 are rotated so that the fuel component located at the level of this valve 3 enters the internal cavity of the sampling column section 1. The sampling column 1 filled with the component is prepared for draining the sample.

To drain the sample, the helm of the gearbox 10 of the control device 6 must be moved to the "Drain" position of the sample. At the same time, all taps 3 are rotated in such a way as to organize a single line for draining the sample of the component located in all sections of the sampling column 1. At the same time, the sample in the section is cut off from the main component in the tank. Using a common tap of the drain device 13, the sample is drained into sampling utensils.

The advantage of the proposed sectional sampler for tanks is a quick and reliable assembly during installation and repair, which increases the life of the sampler in working condition, increasing its operational characteristics.

Claims (1)

Sectional sampler for tanks containing a sampling column, a three-way valve control system in the form of connecting rods and rockers connected in a parallelogram, characterized in that the sections of the sampling pipes are installed in the grooves of the three-way valves and secured with union nuts with a seal, and on the axis connected to the lead rocker mounted worm gear.

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