SU1346508A1 - Arrangement for preventing discharge of upper layer of fluid from tank - Google Patents

Abstract

The invention relates to a device for the overflow of liquids and can be used for the overflow of immiscible liquids with different specific weights. The aim of the invention is to increase the reliability of operation. When the level of the liquid in the tank rises, the floats float and block the holes in the bottom of chamber 2. As the level rises further, the liquid begins to flow into the cavity of the shell 5. When the liquid level rises above the upper edge 7, the upper layer begins to pour into the chamber 2 through the gap 12. Since the volume of chamber 2 is greater than the volume of the upper liquid layer, liquid generally flows from chamber cavity 5 into chamber 2. As the liquid continues to rise, the upper layer from chamber passes through Ptutsera 3 to reservoir p, and the main part of the liquid from the tank through the intake cavity of the shell 5 enters the overflow pipe 1. 2 Cp. f-ly, 3 ill. (L co 4; C5 SP o OO V // (Rig.1

Description

The invention relates to a device for the overflow of liquids and can be used for the overflow of immiscible liquids with different specific gravity.

The aim of the invention is to increase the reliability of operation by preventing the discharge of the upper liquid layer.

FIG. 1 shows the device, a general view; in fig. 2 — node I in FIG. one; in fig. 3 shows an embodiment of the device.

The device consists of a curved overflow pipe 1 mounted on its inlet end of chamber 2, in the upper wall of which at least one fitting 3 is located to drain the floating liquid layer from chamber 2 when the level in the reservoir rises, and in the lower hole 4 located under the inlet end of the overflow pipe 1, mated with the shell 5, installed in the chamber 2, having at least one float valve 6 in the bottom, while the diameter of the upper edge 7 of the shell 5 is larger than the diameter of the inlet end of the overflow pipe 1 and x edges lie in the same horizontal plane.

The diameter of the upper cording 7 of the shell 5 and the outer diameter of the overflow pipe I can be in the ratio

D dVr

g de D - diameter of the upper edge of the shell; d - outside diameter overflow

pipes.

and the shell 5 can be made in the form of a truncated cone, with a large base facing upwards, and the diameter of the smaller base is equal to the internal diameter of the overflow pipe 1.

The device works as follows.

When the liquid level in the tank rises to the floats 8, the latter float up and, adjacent to the saddle 9, close the openings 10 in the bottom 11 of the chamber 2. With a further increase in the liquid level to the shell 5, the upper floating liquid layer h and then the main liquid begins to flow into it. fluid if. When the liquid level in the tank rises to the upper edge 7 of the shell 5 and will rise, the upper layer of fluid from the cavity of the shell 5 through the gap 12 will begin to overflow into the chamber 2. Since the volume of chamber 2 (at height H) () is greater than the volume of the upper floating layer of fluid, The shell fluid 5 enters the cavity 2, and the main fluid flows from the shell cavity 5. As the level inside the chamber 2 rises to edges 7 and 13, the upper liquid layer is distributed over the entire surface of the liquid in chamber 2 from the walls to the overflow pipe 1 loss, but can not get into the pipe 1,

since its lower edge 13 is flush with edge 7. As the level of liquid further increases, the upper layer of liquid from chamber 2 flows through nozzle 3 into the reservoir, and the main fluid from the reservoir enters overflow pipe 1 through the intake cavity 1. When The level of liquid in the tank below chamber 2 liquid column in the chamber, squeezes the floats 8 from the seat 9, and the liquid from chamber 2 through the holes 10 flows out of chamber 2 into the tank.

To prevent the upper liquid layer from entering the overflow pipe 1 when the liquid level in the tank rises rapidly, the cross-sectional area of the annular gap 12 must be greater than or equal to the cross-sectional area of the overflow

pipes 1, i.e. dependence that connects the diameter of the intake cavity D and the diameter of the overflow pipe d. is defined as follows:

.25

5GO 5fcf. H 4 4

or

Where D d d / 2.

In order to contain in the chamber 2 the entire volume of the upper layer of fluid entering the intake cavity, and thereby prevent its penetration into the transducer, the primary pipe 1, the volume of chamber 2 from the bottom 11 to the upper 5 edge 7 (size H) must exceed the volume of the floating layer with a height h entering the intake cavity, i.e. neglecting the TOL1TSIN wall of the intake cavity, we obtain the expression:

SD

D

I .J / .b N Tt

())

D | H - D- H D h;

B

45

After the transformations we get: D D2 (+ 1).

50

From DA d v.

The intake cavity of the shell 5 can be made in the form of a reverse truncated cone, the smaller base of which has a diameter equal to the internal diameter of the overflow pipe 1 so as not to increase the resistance of the liquid ng to the entrance to the intake cavity. Such a discharge, an indentation of the bore cavity, will reduce the volume of the floating layer entering it, as well as in chamber 2, and will make it possible to somewhat reduce the size of the chamber.

Claims (2)

1. An apparatus for preventing discharge of an upper layer of liquid from a reservoir, comprising a curved overflow pipe and a chamber mounted at its inlet end with a nozzle on its upper wall and an opening at the bottom for communicating with D d v2 capacity, characterized in that, for the purpose increase the reliability of work in the bottom.,. where D is the diameter of the upper edge of the shell; chambers under the outlet end of the overflow - the outer diameter of the overflow the pipe has a shell, the pipe is adjacent. with the edge of the hole in the bottom of the chamber for 3. The device according to claim 1, characterized in that the shell is made in the form of a truncated cone, a large base facing the formation of the intake cavity, with the diameter of the upper edge of the shell more the diameter of the inlet end of the overflow pipe, 15 up, and the diameter of the smaller base equal to their edges lie in the same horizontal inner diameter of the overflow pipe. plane, and the camera is equipped with at least one float valve installed in its bottom. 2. The device according to claim 1, characterized in that the diameter of the upper edge of the shell and the outer diameter of the overflow pipe are in the ratio D d v2 Figg Editor N. Egorova Order 4648/18 Compiled by E. Fishman Tehred I. Veres Corrector A. Ilyin Circulation 640 Subscription VNIIPI USSR State Committee on the case of inventions and discoveries 1 13035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Design. four pi / .J