RU207682U1 - WATER JET TURBO ENGINE - Google Patents

Abstract

The utility model relates to shipbuilding, namely to water-jet propulsion for ships and other floating craft. The technical result of the claimed utility model is to reduce the noise level during operation, which is achieved due to the fact that the jet turbo engine containing the first segment of the pipe, on the inner side of which there are nozzles made with the possibility of supplying compressed air, inside the pipe behind the nozzles are coaxially placed turbines, which differs in that the first pipe segment is inseparably connected to the second pipe segment, which is made with an expanding upper wall, which passes into a horizontal part with an air intake that passes into a nozzle. 5 ill.

Description

The utility model relates to shipbuilding, namely to water-jet propulsion for ships and other floating craft.

The JET ENGINE is known from the prior art [RU (11) 94026015 (13) publ. 08/27/1996], containing a water supply pipe, on which a jet nozzle is fixed, and an air supply pipe connected to a water supply pipe and a compressor, characterized in that, in order to use the energy of compressed air and exhaust gases of the motor compressor, the propeller is double-circuit.

The disadvantages of this analog are:

high structural complexity, due to the presence of a two-circuit engine, which complicates and increases the cost of manufacturing a product and its maintenance during operation;

high noise level during the operation of the device due to the formation of air bubbles at the outlet, which enter the atmosphere and cause noise.

The closest in technical essence is a WATER-JETTING TURBO ENGINE ON THE ENERGY OF HIGH PRESSURE AIR USING A MICRO-DISPERSED AIR-WATER MIXTURE [RU204438, publ. 05/25/2021], containing a pipe, on the inner side of which there are nozzles made with the possibility of supplying compressed air, turbines are coaxially located inside the pipe behind the nozzles, characterized in that the pipe consists of two coaxially connected segments, each of the pipe segments is made expanding at the inlet part, and tapering at the outlet part, while the tapering end of the first pipe segment is placed in the expanding segment of the second pipe with the formation of a gap between the pipe sections.

The main technical problem of the prototype is the high noise level during the operation of the device due to acoustic phenomena caused by the violent collapse of air bubbles entering the atmosphere.

The task of the utility model is to eliminate the shortcomings of the prototype.

The technical result of the claimed utility model is to reduce the noise level during operation.

The specified technical result is achieved due to the fact that the jet turbo engine containing the first pipe segment, on the inner side of which there are nozzles made with the possibility of supplying compressed air, turbines are coaxially located inside the pipe behind the nozzles, characterized in that the first pipe segment is inseparably connected with the second segment of the pipe, which is made with an expanding top wall, turning into a horizontal part with an air intake turning into a nozzle.

Brief description of the drawings.

Figure 1 shows a sectional view of a jet turbo engine.

Figure 2 shows a section A-A of a segment of a jet turbine engine.

Figure 3 shows a section B-B segment of a jet turbo engine.

Figure 4 shows a section of a C-C segment of a jet turbine engine.

Figure 5 shows a cross-section of a D-D segment of a jet turbo engine.

The figures indicate:

1 - the first segment of the pipe; 2 - the second segment of the pipe; 3 - outlet pipe segment; 4 - nozzles; 5 - turbines; 6 - axis; 7 - air intake; 8 - the first pump; 9 - the first container; 10 - the second pump; 11 - the second container.

Implementation of the utility model.

A turbo jet engine (with a low noise level and a closed air cycle powered by the compression of an air-water mixture) consists of a pipe consisting of a series-connected first pipe segment 1, a second pipe segment 2 and an outlet pipe segment 3. The first pipe segment 1 has a cylindrical shape, and its section is a circle. Inside the first segment of the pipe 1, on the inner side of the walls, there are nozzles 4, which are connected to a source of compressed air, for example, a high-pressure pump 10 with a container for storing compressed air 11, which is located outside the inner volume of the pipe. Inside the first pipe segment 1, freely rotating turbines 5 are located, rigidly connected to each other by an axis 6. The first pipe segment 1 is inseparably connected to the second pipe segment 2. The second pipe segment 2 has a rectangular geometric profile, consisting of two parts: the first part is made expanding behind due to the upwardly inclined upper wall, the second part is made horizontal and has longitudinal slots, which represent an air intake 7, made with the possibility of collecting exhaust air. The third segment serves as the engine nozzle. Above the air intake 7, there is a pump 8 configured to supply exhaust air to a container 9, which is in communication with a container for storing compressed air 11.

A turbo jet engine (with a low noise level and a closed air cycle powered by the compression of an air-water mixture) operates as follows.

Initially, the pipe consisting of the first 1, second 2 and outlet 3 segments is immersed in water (taking into account the upward direction). Further, the source of compressed air supplies high-pressure air to the nozzles 4, due to which the high-pressure air intensively mixes with water and creates an air-water mixture, which is a foam formation. Further, the foam formation fills the first segment of the pipe 1 and displaces water towards the second segment of the pipe 2, in turn, the movement of water causes the rotation of the turbine system 5. At the same time, the nozzles continue to pump air and increase the volume of the air-water mixture, which accelerates its movement along the first segment and increases the speed of rotation of the turbines 5. Then the air-water mixture enters the second segment of the pipe 2, where, under the action of the Archimedes force, the air flows begin to move upward, along the first part of the second segment of the pipe 2, to the second part of the second segment of the pipe 2 and enter the air intake 7. At the same time, the flows of water by inertia continue to move in the direction of the nozzle and enter the outlet segment of the pipe 3. As a result, an accelerated flow of water exits through the segment 3 and atmospheric air does not come out, which enters the air intake 7.

Thus, the function of the first segment of the pipe 1 is to generate the movement of the flow of water, causing the jet movement.

The functions of the second segment of pipe 2 are: creating additional reactive force by using the pressure of the rising air on the shallow upper wall and separating the air for its accumulation and reuse.

In segment 3, the final formation of the jet stream of the engine takes place.

The re-use of the separated air is realized due to the fact that it is separated in segment 2 from the main body of water and, by means of pump 8, moves into the tank 9, then passes into the tank for storing compressed air 11 and, through the operation of the high-pressure pump 10, is supplied to the nozzles 4, forming thus a closed compression cycle.

The technical result of the utility model - lowering the noise level during operation - is achieved due to the fact that the pipe consists of a series-connected first pipe segment 1, a second pipe segment 2 and an outlet pipe segment 3. In this case, the second pipe segment 2 has a rectangular geometric profile consisting of two parts: the first part is made expanding due to the upper wall inclined upward, the second part is made horizontal and has longitudinal slots, representing the air intake 7, made with the possibility of collecting exhaust air. The third segment serves as the engine nozzle. Thus, due to the declared design, during the operation of the jet turbo engine, the air flow enters the air intake 7, and only water flows enter the outlet of the outlet segment 3. The outgoing streams of water set in motion the floating facility and do not create additional noise during the operation of the turbo jet engine, since the main noise during its operation is created by the air-water mixture due to the formation of air bubbles entering the atmosphere.

Also, the declared design provides:

elimination of the dependence of the operation of the turbo engine on access to an unlimited source of air due to the fact that there is no large irreversible emission of the main working fluid of the engine (air) and there is no need to have either a large storage facility or constantly replenish the air mass from the atmosphere, which makes it possible to use the engine for a noticeable depth without special equipment (as opposed to the prototype);

increasing the efficiency of using the energy of a finely dispersed mixture of water and compressed air to obtain the jet thrust of a jet turbine engine by collecting air through the air intake 7 with the possibility of its subsequent use;

change in the frequency spectrum of the turbine jet engine noise;

the possibility of a completely closed and reusable air mass;

more efficient transfer of energy source (compressed air) for jet propulsion of water.

In 2021, the applicant manufactured a prototype of the claimed device, the trial operation of which confirmed the claimed technical result. The decrease in the noise level during the operation of the turbo jet engine was about 50-70%.

Claims (1)

A jet turbo engine containing a first pipe segment, on the inner side of which nozzles are located, made with the possibility of supplying compressed air, turbines are coaxially located inside the pipe behind the nozzles, characterized in that the first pipe segment is inseparably connected with the second pipe segment, which is made with an expanding upper wall , passing into the horizontal part with the air intake passing into the nozzle.

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