CN1004511B - Internal combustion steam generator - Google Patents

Abstract

The invention is a new type of electric power device which utilizes the high-temperature and high-pressure gas produced by burning liquid or gaseous fuel in a limited space to vaporize and enter the combustion chamber at the same time to form high-pressure steam, which is ejected from the nozzle and directly input into the turbine generator for work. . The salient features of the present invention are: 1. No air pollution; 2. No heat transfer through medium; 3. Simple and compact structure, quick start; 4. Good security. The invention can not only be used to generate electricity, but also can be used for other relatively fixed occasions to provide power with steam.

Description

Internal combustion steam generator

The present invention relates to a new-type electric power equipment which utilizes the high-temp. high-pressure gas produced by combustion of liquid or gaseous fuel in limited space to vaporize and simultaneously feed the water into combustion chamber to form high-pressure steam and jet pipe to jet out, and directly feed the high-pressure steam into turbine generator to do work.

Some existing thermal power devices utilize internal combustion expansion of fuel to do work, such as gasoline engines, diesel engines, gas turbine engines, etc., and some devices can generate steam through a boiler and input the steam into a steam engine and a steam wheel. The boiler equipment for providing steam for steam engine and steam turbine only utilizes the heat energy produced by fuel combustion, but does not utilize the strong pressure potential energy produced by its combustion process, and its equipment is bulky and needs strict water treatment.

The task of the invention is that: breaks through the old concept of 'water-fire incompatibility', changes the traditional mode of heat transfer through a medium, and concentrates the advantages of an internal combustion engine and a steam boiler, so that internal combustion and vaporization are carried out simultaneously.

The invention relates to an internal combustion steam generator as shown in the figure, which mainly comprises a spray pipe (1), a barrel body (2) and a top cover (3), wherein an atomizer (4) is arranged in an atomization chamber at the upper part of the top cover (3), an ignition plug (5), a fire nozzle (6) and a water nozzle (7) communicated with a water distribution chamber are arranged in the middle, and a gas vortex flow guide cover (8) is arranged at the lower part.

The technical solution of the invention is as follows: the method comprises the steps of uniformly atomizing or mixing fuel and combustion air in an atomizing chamber by utilizing different rotation directions of the fuel and the combustion air, forming a vortex combustion center in a gas vortex flow guide cover by utilizing a proper oblique angle of a fuel nozzle in a combustion chamber to ensure that the fuel is completely combusted under the conditions of high temperature, high pressure and sufficient oxygen supply, forming irregular movement of the fuel and steam in a vaporization region by utilizing different rotation directions of the fuel and the water vortex to accelerate vaporization of water, and completely surrounding the high-temperature fuel gas by utilizing a water film formed by high-speed spiral movement of high-pressure water on the inner wall of the whole steam generator to ensure that all heat emitted by the combustion center part is pressed into the moving water. Because the water is mainly contacted with the inner wall of the steam generator and the temperature is not high, the heat loss can be reduced to the minimum by externally assisting with the heat-insulating material, and the heat efficiency is greatly improved.

The invention has the remarkable characteristics that:

firstly, no air pollution is caused. Because the fuel is burnt in the steam generator, the fuel gas is directly mixed with water to generate steam, the steam is reduced into water after being input into the steam turbine to do work, other combustion products are dissolved in the water, and the water can be reused after being correspondingly treated.

Secondly, heat is not transferred through a medium, water treatment is not strict, and the influence of the heat conductivity coefficient of a heat transfer material is avoided, so that the heat efficiency can be greatly improved.

Thirdly, the structure is simple and compact, the starting is rapid, and the maintenance is convenient.

And fourthly, the safety performance is good, and no scale is formed because the water vapor is in a high-speed motion state, so that accidents are not easy to happen.

The attached figure is a schematic diagram of an internal combustion steam generator, wherein the section A-A is an atomizer, the section B-B is a fire nozzle, and the section C-C is a water nozzle.

The steam generation process of the device is as follows:

the water of six water nozzles in the steam generator is supplied by the high-pressure water pump, because the nozzles are all tightly attached to the inner wall of the generator in the same direction and have an oblique angle, the water sprayed out at high pressure is tightly attached to the inner wall to spirally advance, and because of the action of centrifugal force, the water is dispersed to form a water film, thus the heating area can be increased, the heat loss can be reduced, the heating time can be prolonged, and because of the high-speed circular motion of the water, the water generates violent friction, rolling and collision, and certain heat can be generated and the absorption of the heat emitted by the central part of combustion can be accelerated. The fuel of the fuel nozzle in the combustion chamber is supplied by a fuel pump, combustion air is supplied by an air compressor or a high-pressure blower, the fuel and the combustion air are uniformly atomized or mixed in a top cavity by adopting vortex generators in different directions and then are pressed into the combustion chamber for combustion, the fuel gas of the surrounding six nozzles is sprayed out along the tangential direction of an imaginary circle with the diameter being two times of the diameter of a steam outlet, after being ignited by a spark plug, the fuel gas forms a combustion center in a fuel gas vortex flow guide cover, the fuel gas vortex flow is opposite to the water flow direction, the combustion time of the fuel gas in the guide cover can be prolonged, a certain centrifugal force can be generated, the fuel gas is pressed to the water moving around after being separated from the guide cover, so that all heat can ensure that the water vapor formed after the mixing of the positive vortex flow and the negative flow under the action of the centrifugal force of the vortex flow and the, the vaporized water can be taken away from the water surface, and the water which is not vaporized can fully receive heat energy. Because of different temperatures and different steam densities, the vaporized steam is necessarily rotated to the center, and at the moment, the gas from the nozzle at the top of the combustion chamber heats the steam again, and because the heat absorption capacity of the steam is extremely strong, the high temperature of the gas is completely absorbed to form superheated steam which is sprayed out from the steam outlet.

The invention can be produced in factories with certain boiler production experience and test instruments, has the same technical requirements as the production boilers, only needs the gas vortex guide sleeve which is preferably made of heat-resistant non-scaling steel, and needs enough strength and good sealing property at other parts.

The invention is preferably used in conjunction with a steam turbine generator, but may also be used in other relatively stationary applications where larger equipment is powered by steam.

Claims (2)

1. An internal combustion steam generator mainly consists of a nozzle (1), a barrel (2), and a top cover (3), wherein the top cover (3) has an atomizer (4) in the atomizing chamber at the top, a fire plug (5), a fire nozzle (6), and a water nozzle (7) leading out of the water separation chamber at the middle, and a gas vortex guide cover (8) at the bottom. 2. The internal combustion steam generator according to claim (1) is characterized in that it is a fully enclosed type except for the inlet pipes for fuel, combustion air and water and the steam outlet.

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