SU1250763A1 - Hydraulic lock - Google Patents

Abstract

The invention makes it possible to increase the reliability of the shutter operation by eliminating droplet entrainment of liquid and preventing the contact of gas and liquid. When the supercharger is switched on, the gas flow from the line enters the pipe 5, displaces the liquid in it partially into the liquid chamber 3 through the pipe 9, and partially through the Venturi 6 and the centrifugal flow separator 8 into the gas chamber 4. When the liquid is expelled from the pipe 5 and pipe 9, the float valve 10 closes pipe 9, preventing the contact of liquid and gas and preventing gas from bubbling through the liquid chamber 3. Gas passing through the Venturi tube creates a vacuum in the upper part of chamber 3, which increases the level of liquid in it. In this case, part of the liquid through the overflow pipe 14 is removed from the device, reducing the back pressure to the inlet to the first gas stream. The liquid captured by the gas and separated from it, through the drain pipe 11 enters the liquid chamber 3, the float valve 12 is closed, preventing the gas from breaking into the liquid chamber 3 and the contact of the gas with the liquid. When the pressure switch is disconnected in chambers 3 and 4, the float valves open and open the pipe 9 and the drain pipe 11. 2 Il. sl to eat about vl about so

Description

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The invention relates to stop valves and can be used in systems where reliable locking of pipelines of any diameters is required with relatively small differences in the medium on the sides of the valve, preferably in ship inert gas systems on tankers.

The aim of the invention is to increase the reliability of the shutter operation by eliminating liquid drip entrainment and preventing gas and liquid contact.

FIG. Figure 1 shows the hydraulic shutter in an inoperative general view; in fig. 2 - the same, with the blower running.

The device comprises a housing 1, a partition wall 2 into a liquid chamber 3 and a gas 4, U-shaped pipe 5, one knee of which is located outside the housing and the second inside the housing coaxially with it. The inner bend of the u-tube in the upper is made in the form of a Venturi tube 6, moreover, its pliptical portion located in the fluid chamber has openings 7, and the upper portion located in the gas chamber is provided with a centrifugal liquid separator 8. The C-tube in the lower part of the liquid chamber has a pipe 9 with a float valve 10 The partition between the chambers has a drain pipe 11 with a float valve 12 The gas chamber has a pipe 13 for the gas outlet and the liquid chamber has a pipe 14 for sec. excess liquid. The lower parts of the pipe 9 and the drain pipe 11 are made conical, and the locking bodies are elastic balls made of a material lighter than water. The position of the float valve 10 in the pipe 9 when filled with water is fixed by the crosspiece 15.

The hydraulic shutter works as follows.

When the blower is turned on, the gas flow from the line enters the pipe 5, squeezing out the liquid in it partially into the liquid chamber 3 through the pipe 9, and partly through the Venturi pipe 6 and the centrifugal separator 8 of the flow into the gas chamber 4. and pipe 9, pop50763I

The valve valve 10 intersects the lower section of the pipe 9, preventing contact between the liquid and the gas and preventing the gas from bubbling through the liquid

5 chamber 3. The gas passing through the venturi tube creates a vacuum in the upper part of the liquid chamber 3, which increases the level of the liquid in the chamber.

10 At the same time, a portion of the liquid through the overflow pipe 14 is led out of the device, thereby reducing the back pressure to the incoming gas stream. The liquid trapped by the gas and separating from it through the drain pipe 11 flows back into the liquid chamber 3 and, since the pressure in the gas chamber is higher than in the liquid one, it is squeezed out completely from the drain pipe

20, the float valve 12 closes the lower section of the pipe and prevents both the gas from entering the liquid chamber and the contact of the gas with the liquid. This position float valves

25 (Fig. 2) is maintained in almost all modes of operation of the supercharger, except in the case of a decrease in its capacity by more than 50%. But in this case, the automatic shut off, em supercharger.

When the pressure switch is disconnected in chambers 3 and 4, the valves float and take the position indicated in FIG. one.

In this case, when the pressure on

 the side of the pipe 13 is larger than that on the side of the pipe 5, the liquid in the pipe 5 starts to rise in the knee located outside the device body. The decrease in the level of the liquid in the chamber 3 by squeezing it out — into the pipe through the pipe 9 is compensated from the supply network (not shown), and thus the level of the liquid in the liquid chamber 3 and the internal bend of the pipe 5

40

45

always remains simple.

Claims (1)

Invention Formula A hydraulic shutter comprising a housing divided by a partition into liquid and gas chambers connected by an overflow pipe, a U-shaped supply pipe, a gas outlet nozzle and a venturi tube in the form of a venturi, characterized in that, in order to increase the reliability of the shutter operation by eliminating the droplet entrainment liquid and prevent contact of gas and liquid, confuser and cylindrical part of the ejector in the form of a Veituri pipe are installed on the bend of the U-shaped pipe and are located in the liquid chamber, and the upper the cut-off of the ejector diffuser is provided with cent1250763. robust two-phase separators flow and submitted to the gas chamber, and in the overflow pipe and pipe, connected to the dem U-shaped pipe 5 with a liquid chamber, float valves are placed. // Editor Y. Sereda Compiled by T.Romanekko Teh red M. Khodanich Proofreader E. Sirohman Order 4391/30 hours and 880 subscriptions VNIIPI USSR State Committee on affairs of inventions and openings 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., A