RU2288864C2 - Device for stabilization of depth of deep-sea drifting vehicle - Google Patents

Abstract

FIELD: marine engineering; construction of deep-sea drifting vehicles.

SUBSTANCE: proposed device includes pressure sensor and control system with working member made in form of preliminarily calibrated elastic body and ballast chamber where replaceable weights are arranged.

EFFECT: increased duration of drift at deep depth; simplified construction of control system.

1 dwg

Description

The invention relates to the field of marine engineering and can be used to create deep-sea drifting instruments and samples of marine engineering.

There are known deep-sea objects and instruments for studying the properties of the World Ocean, marine weapons, etc., the stabilization of the drift depth of which is ensured by a change in buoyancy (apparatus of Yu.A. Shimansky, see Epron, collection XXIII-XXIV, 1938) or propeller rotation control (“Underwater vehicles” by M.N. Dionidov et al., Shipbuilding, Leningrad, 1966).

All known devices are equipped with complex measurement and control systems, which requires large energy reserves to ensure their operation, limiting the drift time and the high cost of manufacturing these systems.

A device for stabilizing the depth of a deep-sea drifting device (see application for invention No. 2003115763/11 (016754) dated 05/27/2003).

The device comprises a pressure sensor, a control system, an electric motor switch mechanically connected to the working body, and a battery, the working body being made in the form of a hydraulic pump pumping and pumping outboard water into a ballast chamber connected by a piping and valve system with a high-pressure air cylinder and, through a safety valve, with an overboard medium.

The specified device adopted by the authors for the prototype of the invention.

A device for providing drift at a given depth requires periodic switching on of an electric motor with a hydraulic pump, i.e. the consumption of electricity reserves, as well as the consumption of high pressure air reserves to maintain a predetermined pressure drop in the ballast chamber. These shortcomings are compounded by increasing drift depth, complicate and increase the cost of the used units.

The aim of the invention is to eliminate the disadvantages of the prototype - providing increased duration of drift at great depths while simplifying the stabilization system and the minimum cost of the device.

This goal is ensured by the fact that in the device for stabilizing the depth of a deep-sea drifting device containing a pressure sensor, a control system, an electric motor mechanically connected to a working body - a hydraulic pump and a ballast chamber - the pressure sensor and working body are made in the form of a pre-calibrated volume-elastic device casing, and removable loads are installed in the ballast chamber.

The device is schematically depicted in the drawing, where (1) is the volume-elastic body of the device (in the drawing, the dotted line indicates the compression of the body by external pressure). Interchangeable weights (3) are placed in the ballast chamber (2) to control buoyancy, and the freed up internal volume of the device is used for research or other equipment (4).

The device operates as follows: before setting the device, depending on the given drift depth, an adjusting weight is installed in the ballast chamber, the value of which is chosen to ensure zero buoyancy of the device at a given depth (N). To do this, determine the additional positive buoyancy of the device from the increased density of water at a depth (density increases by 1% when the depth changes by 2000 m) and additional negative buoyancy at a depth due to compression of the volume-elastic body by water pressure, determined by preliminary calibration. The value of the load (ΔU) will be

ΔU = N (K ₁ -K ₂ ),

where K ₁ - coefficient taking into account the effects of increased density of water for the housing of the device, the specified dimensions;

K ₂ - coefficient taking into account the decrease in the displacement of the device from external pressure.

For example, the value of the additional load for a device with a diameter of 0.2 m and a length of 2.0 m when installed at a depth of 1000 m is ~ 0.15 kg.

To ensure the ascent of the device, it is enough to separate one or more loads from the ballast chamber.

According to the proposed invention, the results of field tests of similar devices are analyzed, theoretical calculations and mathematical modeling of product movement are carried out.

Claims (1)

A device for stabilizing the depth of a deep-sea drifting device, comprising a pressure sensor, a control system with a working body and a ballast chamber, characterized in that the pressure sensor and a control system with a working body are made in the form of a pre-calibrated volume-elastic body of the device, and removable loads are installed in the ballast chamber .