SU1615034A1 - Drainage system for shipъs fairing of hoisting gear - Google Patents

Abstract

The invention relates to shipbuilding, in particular, to methods for draining the fairings of a lifting and lowering device. The aim of the invention is to improve the reliability of the drainage and security of access to the fairing. The system contains a drain pipe 1, provided in the lower part with a receiving grid 2, and in the upper part with a removable plug 3, which is led out into a sealed interlux space 4, passing through the fairing 5 and the dry chamber 6, an ejector 7 located in the lock chamber 8, connected to the pipeline 9 of the ship’s fire-fighting system through a shut-off valve 10, comprising a drain 11 and a suction 12 nozzles with non-return-shut valves 13 and 14, as well as an automatically closing and regulating shut-off member 15 connected to the drain pipe water 1 by means of a removable flexible hose 16, a removable flexible hose 17, connecting the air pipe 18, located in the lock chamber 8, with the air pipe 19 located in the dry chamber 6 and containing a removable cap 20 in its upper part, check valve 21, an airtight interlux space 4 with the atmosphere, a non-return-shut-off valve 22, a shut-off valve 23, a pressure gauge 24 located in the air duct 17, a shut-off valve 25 for filling the nosepiece 5 with water, an inlet hatch 26. 1 Il.

Description

The invention relates to shipbuilding, in particular, to methods for draining the fairings of a lifting and lowering device.

The aim of the invention is to increase the capability of dehumidification and the security of access to the oOi filter.

The drawing schematically shows a system for draining a ship's fairing of a lifting and lowering device.

The system contains a drain pipe 1, provided in the lower part with a receiving grid 2, and in the upper part - a removable cap 3, placed in a sealed interlux space 4, passing through the fairing 5 and the dry chamber 6 ejector 7 located in the lock chamber 8, connected to the pipeline 9 of the ship’s fire-fighting system through a shut-off valve 10 containing a drain 11 and suction 12 nozzles with non-return-shut valves 13 and 14, as well as an automatically closing and regulating shut-off member 15 connected to the drain pipe pipe 1 by means of a removable flexible hose 16, a removable flexible hose 17, connecting the air duct 18, located in the lock chamber 8, with an air tube 19 located in the dry chamber 6 and containing a removable cap 20 in its upper part, a stop valve 21, connecting an airtight interlux space 4 with the atmosphere, a non-return-shut valve 22, a shut-off valve 23, a pressure gauge 24, located 1; 1) H, on an air duct 17, a shut-off valve 25 for filling the fairing 5 with water, an inlet hatch 26.

The device works as follows.

If it is necessary to dry the cowl B, the valves 10, 21 and 13 are opened successively, a tight interlux space 4 is ejected through the ejector 7, the inlet hatch 26 is opened, plugs 3 are removed and 20. Removable flexible hoses 16 and 17 are connected and the drain pipe I is connected with the suction inlet 12 of the ejector 7 and the air pipe 19 with the air duct 18. Zatom.m opens the valve 22 and compressed air is supplied to the fairing 5 with a pressure equal to half the pressure of the water column outside the fairing. After that, the water supply valve 10 in succession to the ejector 7 from the pipeline 9 of the ship’s fire-fighting system, the valve 14 on the suction inlet 12, which automatically closes and adjusts the shut-off member 15 on the suction inlet 12 and opens the drainage of the fairing 5 with the ejector 7, is simultaneously opened. forcing compressed air into the cowl 5 and maintaining a constant pressure inside the cowl 5, equal to half the pressure of the water column outside the cowl 5 with pressure control by the pressure gauge 24 and the sensor yes phenomena installed inside the fairing (not G hasan). At this, the automatically adjustable locking member 15 increases or decreases the section, which allows

5 to maintain a predetermined pressure inside the pincher. The end of the drainage is monitored by a level indicator (not shown) installed in the cowl 5. At the end of dehumidification, the flap 5 closes the valve 10 and 14 and automatically (at a signal from level sensors) closes automatically the flap and regulating valve 15. When the flap 5 is filled, the flap 25 opens. Air pressure in the flap 5 is controlled by a pressure gauge 24, and by means of valve 23, a smooth discharge of air from the flap 5 is made as it is filled with water.

Due to the introduction of two additional operations (automatic termination

dehumidification and automatic regulation of the dehumidification rate with the help of, automatically closing, it and the regulating valve, installed on the suction inlet of the ejector), air is prevented from escaping from the fairing to the atmosphere, and the balance of pumped water from the fairing is maintained and compressed air supplied to it is prevented It is not necessary to comply with the predetermined ratio of the pressure of the water column outside the obturator and the air pressure inside it.

Claims (1)

Invention Formula A drainage system for the ship’s fairing of a lifting and lowering device containing drain and air piping. located in a dry chamber and closed obturator volume, the upper parts of the drain and air pipelines containing removable plugs are brought into a sealed inter-ram space, and the upper part of the drain pipe is communicated with a flexible hose with an ejector located in the airlock and containing a non-return-closing valve in its suction nozzle, characterized in that, in order to increase the reliability of dehumidification and access to the flow duct, the suction nozzle of the ejector is made with automatically adjustable shutoff valve, and the fairing with a pressure sensor connected to the shutoff valve.