RU2083428C1 - Device for prevention of abnormal rise of pressure in auxiliary ballast tank of submarine in filling it with water - Google Patents

Abstract

FIELD: shipbuilding. SUBSTANCE: device contains normally-closed shut-off valve 1 with hydraulic drive fitted in tank filling pipe line. Cut-out pulse valve 2 and hydraulic distributor 3 are mounted in pipe line feeding the working fluid to hydraulic drive of valve 1. Diaphragm chamber of cut-out valve 2 is brought in communication with tank through non-return shut-off valve 4 and safety bypass valve 5. Diaphragm chamber of cut-out valve 2 is brought in communication with atmosphere through cut-out valve 6 and second shut-off valve 7. EFFECT: enhanced reliability. 1 dwg

Description

 The invention relates to shipbuilding and can be used to create a ballast system of submarines.

 A device is known to prevent an increase in pressure in the tank of the auxiliary ballast of the submarine above the permissible value when filling it with water, containing a shut-off valve for receiving water into the tank (Rules for the design and safe operation of pressure vessels. Gosgortekhnadzor, M. "Nedra", 1990, p . 5.5.2). It is taken as the closest analogue of the invention.

 A disadvantage of the known device is that in case of unauthorized overfilling of the tank and the operation of the safety device, a large amount of water will flow from the side into the compartment of the submarine, which will lead to a decrease in its survivability.

 The technical result of the invention is to increase the survivability of a submarine by preventing the possibility of water flowing from the side into the compartment of the submarine.

 It is achieved by the fact that the device for preventing the pressure increase in the tank of the auxiliary ballast of the submarine above the permissible value when filling it with water, containing a shut-off valve for receiving water into the tank, is equipped with a hydraulic actuator with a hydraulic distributor connected to the shut-off valve for receiving water, a shut-off pulse, irrevocably shut-off, shut-off, second shut-off and safety-bypass valves, while a shut-off pulse valve is installed in the pipeline of the hydraulic system between the guide oraspredelitelem and hydraulically, and its membrane cavity through the safety-relief valve and non-return shut-off valve is connected with the cavity of the tank and through the shut-off valve and the second check valve membrane cavity is connected with the atmosphere, wherein the hydraulic drive is used as a hydraulic actuator normally closed type.

 The drawing shows the proposed device.

 The device contains a shut-off valve 1 with a normally closed type hydraulic actuator installed in the tank filling line, a shut-off pulse valve 2 and a control valve 3 installed in the hydraulic system fluid supply pipe to the valve 1 hydraulic actuator, a non-return valve 4 and a safety bypass valve 5, through which the membrane cavity of the shut-off valve 2 communicates with the tank, the shut-off valve 6 and the second shut-off element 7, through which the membrane cavity of the shut-off valve 2 communicates with the atm area.

 The device operates as follows.

 In the initial state, valves 1, 5, 7 are closed, valves 4, 6 are open, shut-off valve 2 and valve 3 are in the position in which the hydraulic actuator of valve 1 is in communication with the drain pipe of the hydraulic system. The hydraulic actuator of valve 1 is additionally supplied with compressed air, which helps the hydraulic springs to hold valve 1 in the closed position.

 To fill the tank with water, the valve 3 is switched to a position in which the hydraulic actuator of valve 1 communicates with the pressure pipe of the hydraulic system, and valve 1 opens under the action of hydraulic fluid pressure on its hydraulic actuator.

 To stop filling the tank with water, the valve 3 is switched to the position in which the hydraulic actuator of valve 1 communicates with the drain pipe of the hydraulic system, and the valve closes under the action of springs and compressed air pressure, hydraulics from the hydraulic actuator of valve 1 will flow into the drain pipe of the hydraulic system.

 If during the filling of the tank the pressure rises to the permissible value, then under the influence of this pressure the safety bypass valve 5 automatically adjusted for this pressure will automatically open, the shut-off valve 6 will automatically close, the membrane cavity of the shut-off valve 2 will communicate with the tank and, under the action of pressure, the valve 2 will automatically switches to the position where the hydraulic actuator of valve 1 communicates with the drain pipe of the hydraulic system bypassing the control valve 3, after which valve 1 closes under ystviem springs and air pressure. The non-return valve 4 does not allow pressure to escape from the membrane cavity of valve 1 and the possible pressure drop in the tank after this.

 The device is returned to its original position by opening valve 7, after which the pressure from the membrane cavity of valve 2 is relieved and valve 2 switches to the position in which the hydraulic actuator of valve 1 will be in communication with the pipelines of the hydraulic system through the valve 3.

 The shut-off valve 6 is installed in the device to ensure that possible leakage of water through the safety valve 5 from the pipeline communicating the membrane cavity of the shut-off valve 2 with the tank, including pressure pulses leading to short-term explosions thereof.

Claims (1)

 A device for preventing the pressure increase in the tank of the auxiliary ballast of the submarine above the permissible value when filling it with water, containing a shut-off valve for receiving water into the tank, characterized in that it is equipped with a hydraulic actuator with a hydraulic distributor connected to the shut-off valve for receiving water, shut-off pulse, irrevocably shut-off, shut-off, second shut-off and safety-bypass valves, while a shut-off pulse valve is installed in the pipeline of the hydraulic system between droraspredelitelem and hydraulically, and its membrane cavity through the safety-relief valve and non-return shut-off valve is connected with the cavity of the tank and through the shut-off valve and the second check valve membrane cavity is connected with the atmosphere, wherein the hydraulic drive is used as a hydraulic actuator normally-closed type.