SU1008084A1 - Caisson for conducting work on underwater part of vessel hulls - Google Patents

Abstract

1. KESSON FOR PERFORMANCE OF WORKS ON THE UNDERWATER PART OF MILITARY HOUSES, containing a chamber open at the top, the upper edges of which around the perimeter are equipped with a sealing tube element, ballast compartments located on the side walls of the chamber, a device for regulating buoyancy, a ventilation system, a pipeline for supplying a compressed air chamber and a power supply cable, characterized in that, in order to increase work efficiency by eliminating the operation of flooding the caisson when it is rearranged, it is made with a series of inflatable x pnevmokoles, adjustable internal pressure, fitted with their rotational drive for the translational movement of kessone dnnschu served craft and placed on top of vyscheukazannoy chamber. 2. Caisson according to claim 1, characterized in that the sealing tubular element is provided with a series of air relief safety valves, which are located on the working surface of the sealing tubular element facing the cropoiry bottom of the floating caisson. 00 о 00 41

Description

The invention relates to water rescue operations, in particular to caissons for performing work on the underwater part of the hulls of the boats. A known caisson for performing work on the underwater part of the hulls of floating devices contains a chamber open at the top, the upper edges of which are provided around the perimeter with a sealing tubular element, ballast compartments located on the side walls of the chamber, a device for controlling buoyancy, a ventilation system, a pipeline for supplying the chamber compressed air and power cable 1. The disadvantage of the known caisson is the low efficiency of its operation. The purpose of the invention is to increase the efficiency of the operation of the caisson by eliminating the operation of flooding the caisson when it is rearranged. The goal is achieved by the fact that a caisson containing a chamber open at the top, the upper edges of which around the perimeter are provided with a sealing tubular element, ballast compartments placed on the side walls of the chamber, a device for controlling buoyancy, a ventilation system, a pipeline to supply to the chamber air and the power supply cable is made with a series of inflatable pneumatic wheels, regulated by internal pressure, equipped with a drive for their rotation for the forward movement of the box on the bottom of the floating vessel COROLLARY and placed on top of the vyscheukazannoy chamber. In addition, the sealing tubular element is provided with a series of air outlet safety 1 apans, which are placed on the working surface of the sealing tubular element facing the bottom of the floating craft serviced by the caisson. FIG. 1 shows a caisson under the bottom of the craft; in fig. 2 - the same, a plan view of Caisson 1, supplied by the pSGd bottom of the craft 2 (dock), contains an open chamber 3 d from the top with side 4 and front 5 walls. On the upper edge of the chamber 3 - its perimeter - mounted seal 6 in the form of a tubular element, connected to the pipeline 7 of compressed air. The sealing tubular element 6 is equipped with pressure relief air valves 8 oriented towards the bottom of the craft 2. On the side walls 4 of chamber 3 there are ballast compartments 9 with devices 10 for regulating buoyancy, and in the bottom of chamber 3 there is an inlet hatch 11. A caisson 1 is also equipped with a ventilation system having two flexible pipes, an injection 12 and an exhaust 13, a pipeline 7 for supplying compressed air and an electric cable 14. To move the caisson 1 under the bottom of the vessel 2 it is equipped with a system of inflatable wheels 15 connected to the compressed air pipeline 7 and equipped with a rotation drive 16, for example, manual or electric. The wheels 15 are mounted on supports 17. For servicing the caisson 1, lowering it under the bottom of the watercraft and lifting to the surface after work is completed, a barge or scow is used (not until Caisson I works as follows on the underwater part of the body of the watercraft. The chamber 3 of the caisson 1 is placed at the side of the barge, it is filled with water, and it is submerged, having a submerged reserve of buoyancy, which is provided by the ballast compartments 9 and is adjusted by the device 10. Divers bring the caisson 1 to its original position 2. The ballast compartments 9 are drained, and the caisson 1 is pressed by hydraulic pressure to the bottom of the dock 2. Repairmen in the light diving equipment enter the chamber 3 of the caisson 1 through the hatch 11 and pump out the water from chamber 3 using the device 10 to regulate the buoyancy, compressed air is simultaneously supplied to the sealing tubular element 6. As the water from the chamber 3 of the caisson 1 is pumped out, the latter is pressed against the bottom of the watercraft 2 through the sealing element 6, the air pressure in which is regulated imosti force from hydrostatic pressure in view of providing a sealing chamber 3 and in order to prevent water penetration. When all the water from chamber 3 has been removed, turn on the ventilation unit located on the serving barge. Repairmen remove light water equipment and begin to work. The movement of the caisson 1 to another part of the bottom of the craft 2 is made as follows. Compressed air with a pressure exceeding the limit for valves 8 is supplied to the sealing tubular element 6. The air coming out of these valves creates an air gap in the zone of contact of the chamber 3 with the bottom of the watercraft. By means of the buoyancy control devices 10 and the ballast compartments 9, the caisson 1 is balanced, minimizing the adhesion of the sealing element 6 to the bottom of the floating device 2. Compressed air is supplied to the inflatable wheels 15, filling them to ensure stable contact of the wheels 15 with the bottom of the floating equipment. The rotation of the wheels 15 by means of the actuator 16 provides movement of the caisson 1 under the bottom of the craft 2. Depending on the direction of movement of the caisson 1, matching wheels 15 are used for movement.

Performing the caisson 1 with the ability to move it under water without flooding and without leaving it working helps to improve work efficiency, allowing for example cleaning, inspection and painting of the bottoms of the floating equipment without decommissioning them. In addition, there is no need to build self-docking docks, which simplifies their design and significantly reduces the amount of capital investments.

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Claims (2)

1. CASSON FOR PERFORMANCE OF WORKS ON THE UNDERWATER OF THE CASES OF AREA OF THE AREA, comprising a chamber that is not open at the top, the upper edges of which are provided with a sealing tubular element, ballast compartments located on the side walls of the chamber, a device for regulating buoyancy, a ventilation system, and a pipeline for supplying a compressed chamber air and electric power cable, characterized in that, in order to increase work efficiency by eliminating the operation of flooding the caisson when it is rearranged, it is made with a number of inflatable stumps mokoles, adjustable internal pressure, fitted with a drive of rotation for forward movement of the box bottom served boat and arranged above the top of the chamber. 2. Caisson by π. 1, characterized in that the sealing tubular element is provided with a number of air exhaust safety valves, which are located on the working surface of the sealing tubular element facing the sides of the bottom of the vessel serviced by the caisson.