RU2241630C1 - Deepened buoy hydroacoustic device - Google Patents

Abstract

FIELD: device providing operation of positional hydroacoustic stations installed in shallow sea.

SUBSTANCE: the deepened buoy hydroacoustic device has a buoy installed on an anchor with the aid of a suspension, contained with equipment and an antenna. The buoy is made in the form of catamaran of two parts interconnected by a rigid framework, and is connected to the suspension by means at least of four ties each fastened on the sections of the buoy. A container with equipment is positioned between the sections of the buoy, it is connected to the buoy by means of a joining assembly, and the antenna is fixed on the container.

EFFECT: reduced angle of antenna inclination at an influence of undercurrent on it, provided possibility of multiple lift of the equipment with the antenna for their repair without a lift of the buoy.

4 cl, 3 dwg

Description

The invention relates to devices for the operation of positional sonar stations installed in the shallow sea.

Known single-anchor buoy station containing a buoy, secured with a chain to the anchor, the buoy is a container inside which the equipment is located [1].

Also known single-anchor buoy station [2], which is the technical essence closest to the proposed device.

This single-anchor buoy station contains a buoy mounted with an anchor cable, a beacon mounted on a buoy, an antenna placed on a cable, an acoustic disconnector to separate the station from the anchor.

The disadvantage of this device is the large drift of the buoy underwater currents and, as a result, the vertical displacement of the antenna and the large angle of its inclination due to the fact that the buoy in the single-hull design has a large windage (cross-sectional area, which is affected by the flow of water underwater flow), and the decrease in drift due to an increase in the buoyancy force, it is ineffective, since with an increase in the volume of the buoy its windage also increases. In addition, in such a device, raising equipment with an antenna is possible only in conjunction with a buoy, and for the subsequent installation of equipment with an antenna, a new anchor is needed.

The present invention solves the problem of reducing the angle of heel of the antenna when exposed to underwater water flow on the device, as well as providing multiple lifting of equipment with an antenna for their repair without raising the buoy.

To solve this problem, new design features are introduced in the buried buoy hydroacoustic device containing a buoy mounted using an anchor, an equipment container and an antenna, namely: the buoy is made in the form of a catamaran of two parts connected by a rigid frame, between the parts contain a container with equipment connected to the buoy by means of a docking unit, the antenna is rigidly fixed to the container, and the buoy is connected to the suspension by means of at least four connections, each of which is fixed to astyah buoy.

To reduce windage, the container is made with overall dimensions not exceeding the overall dimensions of the buoy.

In order to simplify the lifting and setting of the container with the equipment and the antenna, the docking station has a connection to the frame, contains a support on which a rectangular hole is made, and a rectangular protrusion, the side walls of which are inclined inward, is placed on the container in the lower part.

To reduce the angle of heel of the antenna, the communication of the buoy with the suspension is made rigid and rigidly fixed to the corner parts of the buoy.

Due to the implementation of the buoy in the form of a catamaran in two parts, interconnected by a rigid frame, the placement of the container with the equipment between the parts and its connection with the buoy via the docking unit, the antenna is rigidly fixed to the container, as well as the connection of the buoy with the suspension through at least four connections, each of which is fixed on the parts of the buoy, a single system "buoy - container with antenna" is formed with increased stability and reduced windage. In addition, the placement of the container between the parts of the buoy and the connection with them through the docking node makes it possible to repeatedly lift the antenna with the equipment for their repair without lifting the buoy.

The implementation of the container with overall dimensions not exceeding the overall dimensions of the buoy makes it possible to reduce the windage of the "buoy - container with antenna" system.

The implementation of the docking site of the container, containing the support located between the parts of the buoy, on which a rectangular hole is made, and on the container, the placement of a protrusion of a rectangular shape, the side walls of which are inclined inward, makes it easy to lift and set the container.

Fulfillment of buoy connections with the suspension is rigid, their rigid fixing on the angular parts of the buoy allows to increase stability and reduce the angle of the antenna.

The invention is illustrated by drawings (Fig.1-3). Figure 1 shows a General view of a recessed buoy sonar device, figure 2 is a top view, figure 3 is a bottom view of figure 2.

The recessed buoyal hydroacoustic device contains a buoy 1 made in the form of a catamaran, consisting of two cylindrical bodies 2, interconnected by a rigid frame 3, connecting the middle of the ends of the bodies 2 with channels 4 and the lower parts of the bodies 2 with channels 5, which form a rectangular hole 6 and perform simultaneously the support function for the container 7. On the buoy 1 in the upper part there are four eyelets 8. The container 7 is sealed and equipment 9 is placed in it. The antenna 10 is rigidly fixed to the upper part of the container 7 and in the lower part there is a protrusion 11 of a rectangular shape, the side walls of which are inclined inward. The support with a rectangular hole 6 and the protrusion 11 are the docking unit of the container 7 with the buoy 1. The lower corner parts of the buoy 1 are connected by four rigid connections 12 made of metal pipes, with a suspension 13 fixed at the other end to the anchor 14. The suspension 13 can be made e.g. from a cable, chain, etc. In the upper part of the container 7, the eyelets 15 are installed, and at its ends there are two cable entries 16 for trunk cables 17, one of which connects the equipment 9 to the shore equipment, and the second to the other in-depth buoy sonar device. The trunk cable 17 has a mount 18 on the channel 4 of the frame 3.

The described device operates as follows. The device assembly is lowered to the bottom behind the eyebrows 8 buoy 1 by a crane from a vessel that provides lifting and setting. When acting on the system "buoy - container with antenna" underwater pressure with a speed V (see Fig. 1), a force is formed, applied at the center of the windage of the system, which creates a heeling moment, and the center of buoyancy of C.P. the system deviates relative to the center of gravity G and takes a new position in which the heeling moment will be equal to the restoring moment from the buoyancy force. In this new position, C.P. the system will be in equilibrium, have a roll and the antenna will deviate by this roll angle. Since the buoy 1 is made in the form of a catamaran having greater stability, the angle of heel of the antenna will be minimal. If it is necessary to repair the equipment 9 with the antenna 10, the diver fixes the cable to the eyebolts 15, releases the fastenings 18 of the main cables 17 and the container 7 together with the main cables 17 is lifted by a crane to the deck of the supply vessel. When setting the container 7 and its connection with the buoy 1, the diver directs the protrusion 11 into the hole 6, the container 7 is installed under its own weight on the support-channels 5 of the frame 3 and the antenna 10 is in the same position. The presence of a tilt inside the side walls of the protrusion 11 facilitates its entry into the hole 6. The trunk cables 17 are installed in the mounts 18 on the channels 4. When the buoy 1 is deflected, due to the mounting 18 of the trunk cable 17 on the channel 4, the minimum bending moments act on the cable entries 16, which increases the reliability of the device.

Sources of information

1. Japanese application No. 3-10557, 63 B 22/00, 1991.

2. Single anchor buoy station. G.O.Berto "Oceanographic buoys." - L .: Shipbuilding, 1975, p. 121, Fig. 4.9.

Claims (4)

1. An in-depth buoy hydroacoustic device containing a buoy mounted using an anchor suspension, a container with equipment and an antenna, characterized in that the buoy is made in the form of a catamaran of two parts connected by a rigid frame, a container with equipment is placed between these parts, connected to the buoy through the docking unit, the antenna is rigidly fixed to the container, and the buoy is connected to the suspension by at least four connections, each of which is fixed to the parts of the buoy. 2. The recessed buoyal hydroacoustic device according to claim 1, characterized in that the container is made with overall dimensions not exceeding the overall dimensions of the buoy. 3. The recessed buoyal hydroacoustic device according to claim 1, characterized in that the docking unit is connected to the frame, contains a support on which a rectangular hole is made, and a rectangular protrusion, the side walls of which are inclined inward, is placed on the container in the lower part. 4. The recessed buoyal hydroacoustic device according to claim 1, characterized in that the buoy connection with the suspension is made rigid and rigidly fixed to the corner parts of the buoy.

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