SU1281967A1 - Device for sampling liquid - Google Patents

Abstract

The invention relates to devices for sampling liquids from predetermined levels, mainly highly viscous petroleum products from a vertical, 13 MP / rock reservoirs, and allows the functionality of the device to be expanded by enabling the sampling of highly viscous liquids. The device contains a double-walled chamber 1, between the walls of which there is a cavity 2, communicated with the coolant supply system. The inlet valve 3 is installed in the upper part of chamber 1, and a branch pipe 9 communicating with cavity 2 and valve 3 is installed in the center. The valve control system 3 is made in the form of two elastic coaxial pipes 10 and 11, the outer one communicating with cavity 2, and the inner with pipe 9. 1 Il. L., 5 (Q О-, С

Description

The invention relates to sampling devices, in particular for sampling liquids from predetermined levels, mainly highly viscous petroleum products from vertical tanks, and can be used in monitoring the quality of these liquids in accordance with the requirements of standards.

The aim of the invention is to expand the functionality of the device and increase reliability.

The drawing shows the proposed device, a General view.

The liquid sampling device contains a submerged double-walled chamber 1 with the formation of a cavity 2 between the walls, with the bottom of the chamber

1 made conical. In the upper part, chamber 1 has an inlet valve.

3, and in the lower part there is a drain plug 4. Inside the chamber 1 there is a control element of the inlet valve 3, made in the form of a hollow cylinder 5, along the axis of which a movable

A rod 6 with a piston 7 rigidly fixed on it and a valve 3, moreover, 7 is spring-loaded from above by a spring 8. A branch pipe 9 is installed along its axis in the chamber 1 and communicating with the cavity

2 in its lower part and with a hollow cylinder 5. of the inlet valve 3. The control system of the inlet valve 3 is made in the form of two coaxial elastic tubes 10 and 11, with the outer tube 10 connected to the cavity 2,

and internal - with the upper end of the nozzle 9. The pipes 10 and 11 through the sealing sleeve 12 are connected to the rotating drum 13 with the possibility of their winding and winding during the immersion and elevation of the camera 1, respectively. On the surface of the drum 13 there is a screw chute 14 for regular stacking of turns, and on the edges of the chute 14 a scale 15 is imposed to count the depth of the chamber 1. The upper ends of the pipes 10 and 11 are equipped with rigid tips 16 and 17, and the pipe 10 through valve 18 may communicate with the heat transfer system (steam, hot water, hot air), and pipe 11 through valve 19 with the exhaust heat carrier system. Manometer 20 is connected to the cavity of the pipe 10. The device operates as follows.

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In the initial position, the elastic pipes 10 and 11 are wound on the drum 13 and the chamber 1 is above the surface of the liquid filling the reservoir. The piston 7 spring 8 is pressed down, the intake valve 3 is closed. Cranes 18 and 19 are closed. Before sampling, liquids open them. The coolant through the valve 18 enters the pipe 10 and into the interstitial cavity 2 of the chamber 1, then from the lower part of the chamber 1 through the pipe 9, the pipe 11 and the valve 19 is discharged into the exhaust heat transfer system. Under the action of a hot coolant, chamber 1 is heated. When chamber 1 reaches the required temperature, rotating the drum 13 slowly immerses it in a tank with liquid. Under the action of heat transferred by the surrounding liquid body chamber 1, in adjacent layers, its viscosity decreases, which ensures the passage of chamber 1 into the liquid and further sampling. When the chamber 1 reaches a predetermined depth, the valve 19 is closed. In Pipes-10 and 11 and cavities 2 The pressure of the heat-carrying fluid increases to its value in the hearth system. The pressure is monitored by the pressure gauge 20. The piston 7 is pushed up, the valve 3 opens and a fluid sample starts to flow into chamber 1. The air from chamber 1 is forced out through the open valve 3 into the tank.

After filling with liquid, the chamber 1 opens the valve 19. The pressure of the heat transfer fluid in the cavity 2 and in the cylinder 5 decreases. The piston 7 with the spring 8 is pressed down, the valve 3 is closed. The rotation of the drum 13, the camera 1 is raised up, then close the valve, 19. The pressure of the coolant in the cylinder 5 increases, the piston 7 is pushed up and the valve 3 opens. Through the drain plug 4, the fluid sample is drained into the prepared container, and air enters chamber 1 through valve 3. After the sample is drained, valve 19 is opened, the pressure of the coolant in cylinder 5 decreases, and valve 3 is closed. Then the valve 18, the drain plug 4 and the valve 19 are closed. During use, the chamber 1 is periodically washed.

The economic effect of introducing the invention is to increase

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reliability of operation and expansion of the device’s rational capabilities due to the possibility of sampling highly viscous liquids, which is achieved by performing a double-walled chamber with the formation of a cavity between the walls, which is connected to the coolant supply and discharge system and to the inlet valve.

Claims (1)

Invention Formula A device for sampling fluid from tanks containing a sampling chamber with an inlet valve located at its upper part -5 0 -five 9674 TI, and an inlet valve control system, characterized in that, in order to expand the functionality of the device and increase reliability, the chamber is double-walled to form a cavity between them and provided with a nozzle installed along the chamber axis, communicating with the cavity in its lower part and controlling the valve is at the top, and the control system of the inlet valve is made in the form of two coaxial flexible pipes, with the outer pipe connected to the cavity, and the inner pipe to the upper end of the nozzle.