CN104047759B - The swirl combustion device of a kind of metal and water reaction - Google Patents

Abstract

The present invention is to provide the swirl combustion device of a kind of metal and water reaction, comprise firing chamber, the upper part of firing chamber is ring container, lower part is taper shape container, described ring container comprises the bottom that the upper cover of outer wall, inwall, connection inwall and outer wall and inwall surround, ring container outer wall arranges metallic nozzle, ring container inner wall arranges water spray, the position of water spray is corresponding with the position of metallic nozzle, the top of taper shape container is docked with the outer wall lower end of ring container, and the bottom of taper shape container is connected with jet pipe.Structure of the present invention is simple, reliable, metal surface can be overcome form dense oxidation film and affect the shortcoming of burning, the molten drop diameter reducing thawing can be continued by the shearing force of eddy current, come out in unreacted metal surface and react with water, continue to carry out to make metal and water reaction stablize, improve the combustion efficiency of metal.

Description

A vortex combustion device for metal and water reaction

technical field

The invention relates to a vortex combustion device, in particular to a vortex combustion device for reacting metal and water.

Background technique

Currently, the reaction of active metal particles and water is introduced into the propulsion system of underwater vehicles. However, the combustion efficiency of the combustion device of the traditional domestic underwater ramjet engine is not ideal. It can be found from the test that many solids remain inside the engine. The main reason for this result is the production of metal oxides, which wrap on the surface of metal particles and prevent the combustion from continuing. The traditional engine structure cannot complete the contact combustion of water vapor and metal particles well, which greatly reduces the reaction rate and affects the engine performance.

Contents of the invention

The purpose of the present invention is to provide a vortex combustion device for the metal and water reaction in order to make up for the low efficiency of the existing underwater engine metal and water reaction and mixing, and the shortcoming that its chemical properties cannot be fully utilized.

The object of the present invention is achieved like this: comprise combustion chamber, the upper part of combustion chamber is a circular container, the lower part is a conical container, and said circular container comprises an outer wall, an inner wall, a loam cake connecting the inner wall and the outer wall and The bottom cover surrounded by the inner wall, the outer wall of the circular container is provided with a metal nozzle, the inner wall of the circular container is provided with a water nozzle, the position of the water nozzle corresponds to the position of the metal nozzle, and the upper part of the conical container is docked with the lower end of the outer wall of the circular container , the bottom of the conical container is connected with the nozzle.

The present invention also includes such structural features:

1. A secondary combustion chamber is provided at the bottom of the conical container, and a secondary water injection nozzle is provided on the outer wall of the secondary combustion chamber, and the nozzle is connected to the outlet of the secondary combustion chamber.

2. The metal nozzle and the water nozzle are mass flow control nozzles or mass flow controllers are arranged at the front ends of the metal nozzle and the water nozzle.

3. There are at least two metal nozzles and water nozzles.

4. The nozzle is in a gradually diverging shape.

Compared with the prior art, the beneficial effect of the present invention is: the metal powder of the present invention is carried by the neutral gas, and the inflow quality of the metal powder can be controlled by adjusting the flow rate of the nozzle; the metal nozzle and the water nozzle are arranged at corresponding positions in the same tangential direction , the metal powder and water can reach the intense mixed reaction zone through the hedging contact effect, and the present invention can not only prolong the residence time of the fuel in the burner, that is, prolong the reaction time between the metal and water, but also enable the metal powder fuel to interact with the metal powder through the hedging collision effect. The water is mixed well for a full reaction. The impact makes the substances collide and rub against each other, destroying the oxide film formed on the metal surface during the reaction process, exposing the metal area to further burn violently with water, and enhancing its combustion characteristics. The lower part of the combustion chamber is a cone, which is convenient for the unreacted metal powder to enter the secondary combustion chamber for further combustion. There is a secondary water injection hole in the upper part of the secondary combustion chamber to increase the outlet mass flow rate. In addition, the incompletely combusted metal powder is fully reacted with the secondary injected water to increase the energy utilization rate, thereby improving the working ability of the fuel.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a cross-sectional view of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Embodiment one: in conjunction with Fig. 1, vortex combustion device of the present invention comprises combustion chamber 3, and the upper part of combustion chamber 3 is a circular container, and the lower part is a conical container, and described circular container comprises outer wall, inner wall, connection The upper cover 7 of the inner wall and the outer wall and the bottom cover 8 surrounded by the inner wall, the metal nozzle 1 is arranged on the outer wall of the annular container, and the water nozzle 2 is arranged on the inner wall of the annular container. The position of the water nozzle 2 corresponds to the position of the metal nozzle 1, and the cone The upper part of the container is docked with the lower end of the outer wall of the annular container, and the bottom of the conical container is connected with the nozzle 5, which is in a gradually expanding shape. The upper end of the upper part of the annular container runs through, that is, a loam cake 7 is arranged between the inner wall and the outer wall, and water can be injected into the water nozzle 2 in the middle space surrounded by the annular inner wall. The metal powder is carried by the neutral gas from the metal nozzle 1 into the annular container 3, and the water droplets enter the annular container 3 through the water nozzle 2, and the metal flow and the water flow wash each other, and are vigorously mixed in the annular container 3, Ignite and ignite through the igniter (the igniter is not shown here). After being ignited, the mixed metal powder and water react violently, producing a large amount of high-temperature gas and metal oxides, because the metal powder is injected together with the neutral gas, so that the metal powder nozzle injects more substances than the water nozzle, and the speed is greater. After hedging After the action, the airflow inside the vortex burner forms a vortex along the inflow direction of the metal nozzle 1, which makes the metal and water more fully mixed and prolongs the reaction time. The nozzle 5 can keep the pressure in the combustion chamber stable, and the gas outlet speed can be improved.

During the implementation of the present invention, a plurality of metal nozzles 1 and water nozzles 2 can be arranged correspondingly on the outer wall and the inner wall of the annular container, so that the metal powder and water can be mixed better. The metal nozzle 1 and the water nozzle 2 are mass flow control nozzles or a mass flow controller is arranged on the metal nozzle 1 and the water nozzle 2 .

Implementation case 2: according to the vortex combustion device described in the implementation case 1, a secondary combustion chamber 4 is set at the bottom of the conical container, a secondary water injection nozzle 6 is arranged on the outer wall of the secondary combustion chamber 4, and the connection between the nozzle pipe 5 and the secondary combustion chamber 6 The outlet location is connected.

Then the neutral gas and water vapor after the reaction in the combustion chamber drive the incompletely reacted metal particles to move towards the outlet of the nozzle, first enter the secondary combustion chamber 4, and set a The secondary water injection nozzle 6, the unreacted incompletely reacted metal particles and the water injected by the secondary water injection nozzle 6 carry out secondary combustion, the energy utilization rate increases, and the working ability of the fuel is also improved, so that the metal and water react To achieve the best ratio, increase the energy utilization rate, thereby improving the working ability of the fuel, not only can obtain the maximum combustion efficiency, but also can generate the maximum thrust. The outlet 4 of the secondary combustion chamber is connected with a nozzle 5, which can keep the internal pressure of the burner stable, and the gas outlet speed can be improved.

Claims (9)

1. A metal and water reaction vortex combustion device is characterized in that: comprise a combustion chamber, the upper part of the combustion chamber is a circular container, the lower part is a conical container, and the circular container includes an outer wall, an inner wall, The upper cover connecting the inner wall and the outer wall and the bottom cover surrounded by the inner wall, the outer wall of the circular container is provided with metal nozzles, the inner wall of the circular container is provided with water nozzles, the position of the water nozzles corresponds to the position of the metal nozzles, and the upper part of the conical container is The lower end of the outer wall of the annular container is butted, and the bottom of the conical container is connected with the spray pipe. 2. The vortex combustion device of a kind of metal and water reaction according to claim 1 is characterized in that: a secondary combustion chamber is set at the bottom of the conical container, a secondary water injection nozzle is arranged on the outer wall of the secondary combustion chamber, and the nozzle is connected to the secondary combustion chamber. The outlet position of the secondary combustion chamber is connected. 3. A metal and water reaction vortex combustion device according to claim 1 or 2, characterized in that: said metal nozzle and water nozzle are mass flow control nozzles or mass flow control nozzles are set at the front ends of metal nozzle and water nozzle device. 4. A vortex combustion device for metal and water reaction according to claim 1 or 2, characterized in that there are at least two metal nozzles and water nozzles. 5. A metal-water reaction vortex combustion device according to claim 3, characterized in that there are at least two metal nozzles and water nozzles. 6. A metal-water reaction vortex combustion device according to claim 1 or 2, characterized in that: the nozzle is in a gradually expanding shape. 7. A metal-water reaction vortex combustion device according to claim 3, characterized in that: the nozzle is in a gradually expanding shape. 8. A metal-water reaction vortex combustion device according to claim 4, characterized in that: the nozzle is in a gradually expanding shape. 9. A metal-water reaction vortex combustion device according to claim 5, characterized in that: the nozzle is in a gradually expanding shape.