RU1798295C - Fluid drain device - Google Patents

Description

the restrictive ring 8 is located below the lower boundary of the groove 3.

Installed in the capacity of the oil and gas buffer device operates as follows. Dehydrated oil with gas dissolved in it enters the degassing tank (supply tank) 1. With an increase in oil supply to tank 1, the liquid level in it rises and perforation 5, performed on the lower part of the side surface of cylinder 4, is flooded. Oil rushes under the cylinder 4 and fills the entire volume of the device. Moreover, the separation valve 6 occupies the upper position in the nozzle 2 and abuts against the cross-shaped restriction plates 7. In this case, the groove 3 is activated, providing an intensive outlet of the oil from the reservoir 1 (Fig. 3), the gas phase is completely separated from the output oil. The oil, having passed under the lower edge of the cylinder 4 and through the perforation 5, enters the gap formed by the nozzle 2 and the cylinder 4, and through the groove 3 and then through the drain pipe 2 is discharged from the reservoir. If the fluid level in tank 1 is set. is lower than the middle and part of the perforation holes 5 is in the gas phase, the oil levels in the tank 1, pipe 2 and the gap between the pipe 2 and cylinder 4 are leveled (Fig. 4). If the oil level in the tank 1 decreases to the lower boundary of the groove 3, the isolation valve 6 will end-end the outlet opening in the restriction ring 8 and prevent the gas from flowing into the oil line (Fig. 5). When i resumes the intensive flow of oil into reservoir 1. the level in it begins to rise. As flooding | with an increasing number of perforation holes 5, a correspondingly decreasing amount of gas will flow into the oil discharged from the reservoir (Fig. 6). After flooding of all the perforation holes 5, the insignificant volume of the gas phase accumulated under the cylinder cover 4 will gradually disappear with the flow of oil being drained (Fig. 7). The device will enter the stage of intensive oil withdrawal (Fig. 3).

Similarly, repeating the steps described above in FIGS. 3-7, the device operates on liquid-liquid systems, for example, in the separation of oil and water in gravity settlers. In this case, the device provides a discharge of wastewater regardless of changes in the positions of the interphase level due to the separation

a valve made of a material with an intermediate density between the densities of oil and water.

The device is easy to operate and due to the separation valve made of a material that provides buoyancy in one of the liquid phases of the system and flooding in the other, it is applicable in cases of not only separation of liquid-gas systems, but also liquid-liquid. Besides,

increases the reliability of the device by minimizing the amount of light phase falling into the drain line of the heavy phase: by ensuring the autonomous functioning of the device without

the use of any additional electrical or hydraulic command transmission links,

thirty

Claims (2)

1. A device for draining a liquid, comprising a supply tank with a drain pipe, characterized in that, in order to increase reliability in operation and providing separation during the discharge of a two-phase liquid-liquid system, it is equipped with a separation valve placed inside the drain pipe made of a material that provides buoyancy in one of the liquid phases of the system and flooding in the other, and the limiters of the stroke of the separation valve installed in the upper and lower parts of the drain pipe, 2. The device according to p. 1, characterized in that. that the upper limiter is made in the form of installed crosswise plates, and the lower one is in the form of a ring.