RU2851265C1 - Diving semi-bell with telescopic body - Google Patents

Abstract

FIELD: diving equipment.

SUBSTANCE: invention relates to diving equipment, specifically to diving bells. Proposed diving semi-bell consists of carcass, platform, folding seat, watertight dome with folding telescoping body. In dome there is an eye for attachment of rope of lifting device and sockets for connection of all components of cable-hose bundle. Upper part of the dome is made water and gas impermeable from plexiglass, and side walls of the body are made from water and gas impermeable fabric allowing to fold the body. Pipeline with a ball valve is brought out into the inner part of the dome, through which air is supplied into the space under the dome. Pipeline is connected to distributing column, which is equipped with connectors for connection of cable-hose bundle of diver, wherein intercom is arranged under dome.

EFFECT: providing the possibility of emergency ascent by decompression mode during diver descents from vessels that are not equipped with a diving complex.

1 cl, 2 dwg

Description

The invention relates to the field of diving equipment, namely to diving bells.

A diving harness is known, used on the Navy’s offshore diving boats for lowering a diver to the site of diving operations and his subsequent ascent under decompression conditions [1].

The disadvantage of a diving harness is the inability to lift a diver in decompression mode in the event of equipment failure (switching to an emergency breathing apparatus or emergency equipment operation mode), since the emergency reserve of equipment only provides the ability to continuously lift a diver.

A diving complex equipped with a semi-bell is known, permanently installed on sea diving vessels of the SDS08 project of the Uglich type [2].

A distinctive feature of the semi-bell is its ability to allow the diver to enter the air cushion and transition to breathing from it. Ventilation of the semi-bell's air cushion is accomplished by supplying air through a hose from the surface and/or from cylinders mounted on the outer surface of the semi-bell's body or its frame.

The disadvantages of using the SDS08 marine diving vessel's diving system or similar ones include its large size and weight, which prevent it from being installed on small-sized offshore diving boats of the Navy, as well as the high cost of the equipment.

The “BVT-S “Kubyshka” collapsible diving transport pressure chamber is well-known and is intended for the evacuation of divers or submariners suffering from decompression sickness to coastal pressure chambers (pressure complexes) and pressure complexes on rescue vessels [3].

A distinctive feature of the BVT-S "Kubyshka" is its telescopic middle section, made of flexible, water- and gas-impermeable fabric, ensuring the chamber's durability under elevated overpressures of up to 0.5 MPa. The telescopic middle section significantly reduces the BVT-S "Kubyshka"'s weight, allowing for compact storage and easy transportation when folded.

The objective of the invention is to ensure the possibility of emergency ascent of a diver in decompression mode during diving descents from vessels not equipped with a diving complex.

The problem is solved by the invention having a water- and gas-tight upper part (dome) made of plexiglass. The upper part of the dome contains an eye for securing the lowering device cable and connectors for connecting the cable-hose bundle from the vessel. The bell-shaped structure is equipped with internal and external lights, and an intercom is located under the dome to ensure communication with the diver. The diver, wearing a hose-type diving suit, breathes by connecting the cable-hose bundle included in the suit to a pipeline connecting it to the cable-hose bundle from the vessel. The lowering and raising of the bell-shaped structure is accomplished using the vessel's standard lifting device, designed for use with a diving harness.

Attached to the upper part (dome) is a telescopic half-bell housing made of water- and gas-impermeable fabric, forming an internal volume that creates an air cushion. Before diving, the telescopic housing is lowered and locked in the lowered position. During storage and maintenance, the telescopic housing is locked in the folded position.

The essence of the invention is that the weight and dimensions of the proposed diving bell allow it to be used in place of a diving harness on small diving vessels whose displacement does not allow for the installation of a full-fledged diving system with a heavy diving bell. The use of this design will improve diving safety when working at depths of up to 60 meters.

The new features of the invention are the provision of the possibility of emergency lifting of a diver in decompression mode during diving operations from small vessels on which the placement of a full-fledged diving complex is impossible, and the provision of access to the elements of the semi-bell located inside the hull for ease of maintenance.

The advantage of the invention lies in solving the problem of ensuring the safety of diving operations when carrying out work at shallow and medium depths from on board small vessels not equipped with a diving complex.

Fig. 1 shows the device of the invention (a collapsible telescopic body made of water- and gas-impermeable fabric in the folded position). The diving bell-house consists of a frame 1, a platform 2, a folding seat 3, a water- and gas-impermeable dome 4 and a collapsible telescopic body made of water- and gas-impermeable fabric 14. An eye 7 for attaching the cable of the lowering device and connectors 6 for connecting all components of the cable-hose bundle coming from the vessel are mounted in the dome. A pipeline with a ball valve 11 is located inside the dome, by means of which the diver can control the air supply to the sub-dome space. A muffler-diffuser 12 is installed to reduce the noise level and the force of the air flow supplied to the sub-dome space. Air supplied from the surface is fed through the pipeline to a distribution column 8 equipped with connectors for connecting the diver's cable-hose bundle. To improve convenience and prevent the cable-hose bundle from falling off the platform, a winding device 9 is mounted on the transverse stiffener. The diver can, if necessary, stop the air supply to the equipment by closing the ball valve 10. Illumination of the interior of the dome and the work area is provided by waterproof hyperbaric lamps 5. Emergency communication between the diver and the descent commander is provided by a two-way loudspeaker unit 13.

Fig. 2 shows a general view of the half-bell with an extended and folded telescopic body made of water- and gas-impermeable fabric.

Literature

1. Slesarev O.M. Diving equipment of the Navy / O.M. Slesarev - M. Military Publishing House, 1990. - 163 p.

2. Delyanov A.V. The first 100 m shipboard diving complex in Russia / A.V. Delyanov // Hydrotechnics. - 2011. - No. 4 (21) / 2010 - No. 1 (22) 2011. - pp. 80-83.

3. Diving transport folding pressure chamber BVT-S "Kubyshka", equipped with a stationary oxygen breathing system: Operating manual YUEYU.KUB.01.00.00.00.00-01RE - M. ZAO "SKB EO at IMBP RAS", 2017.

Claims (1)

A diving semi-bell, consisting of a frame, a platform, a folding seat, a water-tight dome with a folding telescopic body, wherein an eye is mounted in the dome for fastening the cable of the descent device and connectors for connecting all components of the cable-hose bundle, characterized in that the upper part of the dome is made water-tight from plexiglass, and the side walls of the body are made of water-tight fabric, allowing the folding of the body, in the inner part of the dome there is a pipeline with a ball valve, by means of which air is supplied to the sub-dome space, and the pipeline is connected to a distribution column, which is equipped with connectors for connecting the diver's cable-hose bundle, and an intercom is located under the dome.