SU535591A1 - Pneumatic emitter of acoustic signals - Google Patents

Description

The invention relates to the field of geoacoustics and can be used to emit acoustic signals in water bodies, transmit signals under water and to create noise interference.

The emitters of acoustic signals (1) are known, in which acoustic oscillations are produced by a directed internal explosion in a liquid medium. Such devices include a cylinder in which the piston slides, and valves. When the piston moves in the cylinder, a vacuum is created which is quickly filled with water, as a result of which an internal directional explosion is created in the cylinder and an acoustic shock wave is formed.

In seismic exploration, acoustic signal emitters (2) are also used, in which acoustic oscillations are created due to abrupt changes in the chamber volume.

For the devices described above, the presence of hydraulic or pneumatic actuators is characteristic, which complicates the design of the radiators and limits the scope of their application.

The emitters of the acoustic signal are known, the operation of which is based on the use of a chamber with a gas (3).

Also known pneumatic emitter (4) acoustic signals, containing

a high pressure cylindrical chamber with an exhaust port and a guide cylinder with an electrically controlled valve.

Efficient operation of such emitters requires the use of powerful compressors necessary for filling high-pressure chambers with compressed air.

The aim of the invention is to improve the efficiency of the pneumatic emitters of acoustic signals.

This is achieved in that the proposed sleep device. a pressure chamber made in the form of a cup and mated with an open base with a high pressure chamber installed coaxially with the pressure chamber and made reciprocating, while spring-loaded blades are hinged on the outer side surface of the pressure chamber and element with clapa.

FIG. 1 shows the described device.

The emitter contains a cylindrical chamber / high Dazlen1 with an exhaust hole 2 and a guide cylinder 3, equipped with an electrically controlled valve 4 and hooks 5 on which the ends of the cable 6 are rigidly fixed, by means of which the radiator is connected to the floating means.

A cylindrical / high pressure chamber is installed coaxially with the pressure chamber 7 with the possibility of reciprocating motion relative to it. The injection chamber 7, on the outer side surface of which the blades S are fixed, is provided with springs 9, guide rings 10 into which ipropui1, ends of cable 6, and an air inlet element, for example a rubber hose 11, connecting the cavity of the injection chamber 7 with the atmosphere. In the rubber hose installed valve 12.

The operation of the radiator is carried out as follows. During the lowering of the radiator to the required depth, the blades 8, stretching the spring 9, rotate, take the position b, close to the vertical, and prevent the apparatus from quickly sinking. The valve 12 is open, and the cylindrical / high pressure chamber and the injection chamber 7 are filled with an airfoil under a pressure equal to the atmospheric pressure. After the emitter stops, the blades 8 under the influence of the m springs 9 return to their initial horizontal position. The valve 12 overlaps and the cable rises. Water resists upward movement of the injection chamber 7 with blades 8. Therefore, the cylindrical high pressure chamber begins to slide into the injection chamber 7, while the air pressure in the cylindrical chamber and the pressure chamber 7 increases sharply. When the air pressure reaches a certain value, a signal is given, the electrically-controlled valve 4 rises in the guide cylinder 3, opening the exhaust port 2, and the exhaust occurs (see Fig. 2). The air pressure in the high-pressure cylindrical chamber (i) is depressed, and the electrically-controlled valve 4 closes the exhaust port 2. Then the valve 12 opens and the cable is relaxed. The cylindrical chamber / high pressure under the action of its own weight drops down, filling it with air entering through the rubber case //. After it takes

starting position, the emitter is again ready for operation.

The inventive invention permits to increase the efficiency of the operation of pneumatic emitters of acoustic signals due to

eliminating the need for mop compressors.

Claims (4)

1. The patent of France 8122676, cl. G 10 K 10/00, 1972. 2.Patept of France No. 2191808, cl. G 10K 10/00, 1974. 3. The UK patent number 1316178, cl. G 5 J, 1973. 4. Avt. St. No. 325629, M.C. G 10 K 10/00, 1970 (prototype).