RU201875U1 - GAS GENERATOR - Google Patents

Abstract

The utility model relates to energy, namely, hydrogen energy. The technical effect achieved by the proposed gas generator is to improve the mixing quality of the ballasting medium with combustion products and reduce the weight and size characteristics due to the effective ejection of combustion products by the ballasting medium to the mixing chamber wall, high turbulence of the flow and shortening the longitudinal length of the gas generator. An increase in the flow rate of the ballasting medium leads to an increase in the ejection and temperature uniformity of the flow at the outlet of the gas generator. This technical effect is achieved in a gas generator containing a housing, an ignition device, a mixing chamber and sensors located in it for determining the parameters of the resulting mixture, a combustion chamber at the initial section of which the input is located ballasting medium, made in the form of an insert with spiral nozzle channels, and the oxidizer supply line, the fuel supply line, the ballasting medium supply line, in which a flow regulator is installed at the entrance to the combustion chamber, according to the utility model, the mixing chamber has a cross-sectional diameter larger than the combustion chamber, and it is made in the form of a diffuser with a short cylindrical part after expansion. low-temperature ballasting medium with high-temperature combustion products of hydrogen in oxygen due to the use of a mixing chamber with a diffuser with a short cylindrical part after expansion. Thus, the implementation of this utility model will lead to an increase in the durability and reliability of power plants.

Description

The utility model relates to energy, namely, hydrogen energy. One of the problems currently existing in this field of technology is the problem of operational reliability and a decrease in the metal consumption of the structure of gas generators.

Known vortex hydrogen-oxygen combustion chamber containing an ignition device, supply lines and nozzles of hydrogen and oxygen, combustion and mixing chambers, swirling devices, a conical flame stabilizer, a flame tube, a compensator for thermal expansion, a flame tube with perforations and mixing holes, a cooling channel, tangential inlet in one section for supplying water vapor. (see patent RU No. 2539243 dated February 25, 2013, class IPC F02K 9/64).

The disadvantage of the specified vortex hydrogen-oxygen combustion chamber is the possibility of unstable combustion due to insufficient quality mixing of water vapor with combustion products and the formation of local temperature irregularities over the cross section of the mixing chamber.

Known hydrogen-oxygen gas generator containing a combustion chamber, housing, supply lines for hydrogen and oxygen, an electric candle, a mixing element and nozzles, a narrowing nozzle, an internal cooled insert, a mixing chamber, an air supply line consisting of four holes located at an angle of 40 ... 60 ° to the axis of the combustion chamber (see patent RU No. 165761 dated 05/04/2016, class IPC F23R 3/44).

The disadvantage of this utility model is that in this design of the hydrogen-oxygen gas generator, with insufficient mixing of the ballasting gas with the combustion products, temperature irregularities can be observed. Temperature unevenness can lead to the formation of thermal bundles, which negatively affects the performance of the turbine and can lead to its destruction.

The closest of the known technical solutions is a method of gas formation in a gas generator and a gas generator (options) containing combustion and mixing chambers, supply lines for the oxidizer, fuel and ballasting medium, an ignition device and spiral channels (see patent RU No. 2630625 dated 03.06.2016 ., CL IPK F02C 6/00), and in the combustion chamber a vortex shell is formed from the ballasting medium around the flow of combustion products, moving directionally along the axis of the combustion chamber.

The disadvantage is the considerable length of the combustion chamber and the mixing chamber, which is due to the radial unevenness of the temperature distribution caused by the poor mixing quality of the low-temperature ballasting medium and high-temperature combustion products.

The technical effect achieved by the proposed gas generator consists in improving the mixing quality of the ballasting medium with the combustion products and reducing the mass and size characteristics due to the effective ejection of combustion products by the ballasting medium to the mixing chamber wall, high flow turbulence and shortening the longitudinal length of the gas generator. An increase in the flow rate of the ballasting medium leads to an increase in ejection and temperature uniformity of the flow at the outlet of the gas generator.

This technical effect is achieved in a gas generator containing a housing, an ignition device, a mixing chamber and sensors located in it for determining the parameters of the resulting mixture, a combustion chamber, at the initial section of which the ballasting medium inlet is located, made in the form of an insert with spiral nozzle channels, and the gas generator is supplied with oxidizer supply line, fuel supply line, ballasting medium supply line, in which a flow regulator is installed at the inlet to the combustion chamber, characterized in that the mixing chamber has a cross-sectional diameter larger than the combustion chamber, and it is made in the form of a diffuser with a short cylindrical part after expansion.

The essence of the utility model is illustrated in Fig. 1, where it is shown that the gas generator includes:

1 - case;

2 - ignition device;

3 - oxidizer supply line;

4 - fuel supply line;

5 - line for supplying ballasting medium;

6 - mixing chamber;

7 - combustion chamber;

8 - spiral channels;

9 - sensors for determining the parameters of the resulting mixture;

10 - automatic process control system (APCS);

11 - ballasting medium flow regulator.

Structurally, the gas generator comprises a housing 1, an ignition device 2, an oxidizer supply line 3, a fuel supply line 4 and a ballasting medium supply line 5, a mixing chamber 6, a combustion chamber 7, between the outer and inner walls of which spiral channels 8 are installed. a system for measuring parameters of combustion products 9, which is connected to the APCS 10, which is further connected to the flow controller 11.

The gas generator operates as follows. The fuel components are supplied to the combustion chamber 7 through the supply lines of the oxidizer 3 and the fuel 4, where they are ignited with the help of the ignition device 2. Combustion products move along the axis of the combustion chamber 7. Simultaneously with the ignition of the components, the ballasting medium is fed into the spiral channels 8 through the line 5, which passes along the wall of the combustion chamber 7 through the channels 8. The ballasting medium enters the mixing chamber 6 from the spiral channels 8, where they occur mixing with combustion products due to the turbulization process, after which the parameters of the resulting mixture are measured using sensors for determining the parameters of the obtained mixture 9. Next, the automated process control system 10 analyzes the results of measuring the parameters of the resulting mixture, on the basis of which the flow rate of the ballasting medium is adjusted by means of the flow controller 11.

The advantage of the given gas generator is the reduced mass and size characteristics of the gas generator and the improved mixing quality of the low-temperature ballasting medium with high-temperature products of hydrogen combustion in oxygen due to the use of a mixing chamber having a diffuser with a short cylindrical part after expansion.

Thus, the implementation of this utility model will lead to an increase in the durability and reliability of power plants.

Claims (1)

A gas generator containing a housing, an ignition device, a mixing chamber and sensors located in it for determining the parameters of the resulting mixture, a combustion chamber, at the initial section of which the ballasting medium inlet is located, made in the form of an insert with spiral nozzle channels, and the oxidizer supply line, the main fuel supply, ballasting medium supply line, in which a flow regulator is installed at the inlet to the combustion chamber, characterized in that the mixing chamber has a cross-sectional diameter larger than the combustion chamber, and it is made in the form of a diffuser with a short cylindrical part after expansion.

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