SU911085A1 - Apparatus for feeding of liquid displacement-type - Google Patents

Description

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The invention relates to the field of fittings.

Shut-off devices are known in which, in order to reduce vortex formation at the saddle outlet, it is made with radial holes, and the valve closing plane is made with a streamlined protrusion that enters 8 the flow part of the saddle tlj.

The disadvantage of this device is the elimination of the possibility of complete blocking of the supply line.

A device for displacing fluid supply by means of high-pressure gases is known, which contains a container with a lid and a dispensing orifice located in its lower part, in which a float valve is installed with a shut-off member and a float fixed to a movable stem in the valve body 12.

A disadvantage of the known device is that in the case of using high pressures of gas vpop dk a few hundred atmospheres to displace a liquid), the creation of float mechanisms with a closed float volume is practically difficult, since in this case the walls of the float must be large.

The purpose of the invention is to increase the reliability of the device.

This goal is achieved by the fact that the rod is made with an internal hole, the cavity of which is connected to the internal cavity of the float, and a pipe is fixed on the tank roof that connects the upper gas cavity of the vessel to the internal cavity of the float, which allows the float to be thin-walled, having sufficient buoyancy.

The drawing shows the device, General view, section.

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Claims (2)

In the tank 1 of the device. With a filling opening 2, a float valve is installed, in the case of which 3 on the movable rod are fixed 3. 9 shut-off organ and a thin-walled hollow float 5- connected to it. The internal cavity of the float is connected to an upper gas cavity by means of a hole in the rod, capacitance 1 through flexible elements 6 and fixedly mounted on the upper bottom of the container. 7 The device works as follows. When the container 1 is filled through the opening 2 with liquid, the float valve, which was previously in the closed position, under the action of the buoyancy of the float 5 Opens. As the valve is filled with liquid, it opens completely when it is opened. Float 5 comes to the stop in the valve body 3. Before the device starts working, i.e. before the liquid is displaced, a gas of the required pressure is supplied to it, which may be several hundred atmospheres. At the same time, the gas pressure through the pipeline 7 and the tubular flexible elements 6 flows into the internal cavity of the float 5, thereby unloading it from the external pressure forces transmitted through the liquid. Unloading from pressure forces allows the float to be thin-walled, which ensures its buoyancy. With the opening of the locking device (not shown in Fig. 1), the gas is expelled from the tank 1. At a certain moment (at the end of the emptying cycle), the float 5 follows the descending liquid level and closes the discharge opening 2 with the locking organ C, eliminating breakthrough him gas. The valve body 3 and the shut-off organ k can be made in the form of a funnel extinguisher, which ensures the stability of the valve when it is closed, eliminating its fit. bathe, i.e. increased reliability of the device. The amount of liquid remaining in the tank 1 is minimal. The device works especially effectively in the case of using several tanks connected in parallel to one receiver. In this case, the emptying of containers due to the difference in the hydraulic resistance of the supply pipelines takes place at different times, and the automatic shutdown of each container as it empties, which is ensured by the proposed device, makes full use of their total volume possible. Apparatus of the Invention A device for displacing a liquid with a high-pressure gas, comprising a container with a lid and a dispensing port located in its lower part, in which a float valve with a shut-off member and a float mounted on a movable stem in the valve body is installed, in order to increase the reliability of operation., the rod is made with an internal bore hole, the cavity of which is connected to the internal cavity, and a pipe connecting the upper gas field is fixed on the tank lid awn capacity with the internal cavity of the float. Sources of information taken into account in the examination of T. Author's certificate of the USSR 6i (0080, class F 16 K 47/02, 1977. 2. USSR author's certificate, cl. F 16 K 31/20, 1979.