RU2699914C1 - Steam generator - Google Patents

Abstract

FIELD: steam generators.

SUBSTANCE: use: for steam production. Summary of invention consists in the fact that nauger generator comprises a housing with a combustion chamber, a mixing head with fuel fuel supply cavities, fuel components supply belts connected to corresponding fuel components by means of channels, wherein fuel supply zones are made in the form of several coaxially installed shells located each relative to each other with annular gaps, and forming closed annular cavities opening into combustion chamber, wherein annular cavities of fuel components are uniformly alternating between each other, wherein in the central part of the head, between the components supply belts, there is a belt for supply of the steam generating liquid, the cavity of which opens into the cavity of the combustion chamber, at that on the shells ends on the side of the inlet there are end profiled bottoms fixed to each other and to the housing, and forming successively located end annular cavities, wherein in bottoms and bottoms there are insulated channels connecting said end cavities of supply of fuel components through one to each other, wherein angular and radial position of channels in previous cavity is different from angular and radial position of similar channels in subsequent cavity, and diameter of said channels decreases from periphery to center of mixing head, wherein said annular cavities of fuel components are connected to corresponding cavities of supply of components through said end cavities formed with profiled bottoms.

EFFECT: technical result is possibility of steam generating liquid flow rate in wide range.

1 cl, 2 dwg

Description

The invention relates to power plants producing high-quality steam, obtained due to the energy released during the combustion of hydrogen or natural gas (GHG) in oxygen.

A steam generator is known that contains an ignition device with an electric candle, a mixing head with oxidizer and fuel supply lines, a mixing chamber with holes, while the combustion chamber with cooling duct channels is convex in shape with a rotation center forming around the axis of the combustion chamber and consists of two parts, rigidly and hermetically connected to each other, with a ledge made on the inner wall of the first part, in which there are holes at an angle to the longitudinal axis of the combustion chamber, connected to the cooling path , (RF patent for the invention No. 2263017, Application: 2016119848 dated 05/23/2016, IPC: F22B 1/00, F22B 37/00 - prototype).

The steam generator operates as follows. The main consumption of the fuel components enters the mixing head along the lines of the oxidizer and fuel, and then from the nozzles into the combustion chamber, where they ignite from the pilot flame. Simultaneously with the supply of the main flow rate of the fuel components, water begins to flow through the highway into the channels of the cooling path of the first part of the combustion chamber. In this case, the fuel components, emerging from the nozzles, form the streamlines of the combustion products, which smoothly touch the inner wall of the first part of the combustion chamber in the region of the mixing head. In the most heat-stressed zone, water enters from the openings of the curtain rings connected to the cooling path of the first part of the combustion chamber, and is reliably pressed by the combustion products to the inner wall of the second part of the combustion chamber, protecting it.

The main disadvantages are the design complexity due to the need to make water supply openings in the weld area, difficulties with cooling the second part of the chamber, due to the fact that water will already enter the cooling path, which has already been heated to extreme temperatures in the first part, which can lead to its boiling in the cooling path with the subsequent formation of water flow discontinuities in the channels of the cooling path due to the presence of steam and a significant deterioration in the conditions of the second part of the chamber, the inability to control steam flow due to a strictly defined water flow rate for cooling the chamber, changing it in any direction can lead to deterioration of the cooling conditions of the chamber with subsequent burnout of its walls.

The objective of the invention is to remedy these disadvantages and create a steam generator with the ability to change the flow rate of the resulting steam.

The solution of this problem is achieved by the fact that the proposed steam generator, according to the invention, comprises a housing with a combustion chamber, a mixing head with cavities for supplying fuel components, a belt for supplying fuel components connected to the corresponding cavities of the fuel components using channels, while the belt for feeding fuel components is made in the form of several coaxially mounted shells located relative to each other with annular gaps and forming closed annular cavities that open in combustion amer, moreover, the annular cavities of the fuel components are evenly alternated with each other, while in the central part of the head, between the supply belts of the components, a steam supply belt is installed, the cavity of which opens into the cavity of the combustion chamber, while the end profiles are installed on the ends of the shells from the input side bottoms bonded to each other and to the body, and forming successively located end annular cavities, and isolated channels are made in said bottoms and cavities, connecting said end cavities of the supply of fuel components through one with each other, moreover, the angular and radial position of the channels in the previous cavity is different from the angular and radial position of the similar channels in the subsequent cavity, while these annular cavities of the fuel components are connected to the corresponding cavities of the components through the said end cavities formed by profiled bottoms.

The invention is illustrated by drawings, where in FIG. 1 shows a longitudinal section through a steam generator; FIG. 2 - shows a longitudinal section of the mixing head of the proposed steam generator.

The steam generator comprises a housing 1 with a combustion chamber 2, a mixing head 3 with cavities for supplying components. The belt for supplying the fuel components 4 and 5 is made in the form of several coaxially mounted shells 6 located relative to each other with annular gaps 7. The annular cavities of the fuel components 4 and 5 are evenly alternated. In the central part of the mixing head 3, between the supply belts of the fuel components 4 and 5, a vapor supply fluid supply belt 8 is installed, the cavity of which opens into the cavity of the combustion chamber 2. At the ends of the shells 6, end profiled bottoms 9 are fixed to each other on the input side and fastened to each other and with a housing, and forming successively located end annular cavities. In the indicated bottoms and cavities, isolated channels 10 and 11 are made, connecting the said end cavities of the supply of fuel components through one to another. Said annular cavities of the fuel components are connected to the respective cavities for supplying the components through said end cavities formed by profiled bottoms.

The proposed steam generator operates as follows.

The fuel components are fed into the corresponding cavities of the mixing head 3, and then, through the annular gaps 7 formed by the belts 4 and 5, into the combustion chamber 2. In the combustion chamber, the fuel components ignite and form a high-temperature gas mixture. Through the feed belt of the vaporizing liquid 8, a vaporizing liquid is supplied to the high-temperature gas mixture. Under the influence of high temperatures of the gas mixture, the vaporizing liquid evaporates to form steam. The resulting vapor-gas mixture enters the outlet of the housing 1 and goes on for further use. Due to the fact that the vaporizing liquid is supplied to the mixing head 3, its flow rate does not affect the cooling of the combustion chamber, which allows changing the flow rate of the vaporizing liquid over a wide range.

Using the proposed technical solution will allow you to create a steam generator with reliable cooling and the ability to change the flow rate of steam.

Claims (1)

A steam generator, characterized in that it comprises a housing with a combustion chamber, a mixing head with cavities for supplying fuel components, a belt for supplying fuel components connected to the corresponding cavities of the fuel components via channels, while the belt for supplying fuel components is made in the form of several coaxially mounted shells located with respect to each other with annular gaps and forming closed annular cavities opening into the combustion chamber, and the annular cavities of the components the fuel flows evenly alternate with each other, while in the central part of the head, between the supply belts of the components, a vapor supply fluid supply belt is installed, the cavity of which opens into the cavity of the combustion chamber, while at the ends of the shells from the input side there are installed shaped end bottoms, bonded to each other and with the housing, and forming successively located end annular cavities, moreover, in said bottoms and cavities there are insulated channels connecting the said end cavities of the component supply fuel through one between each other, and the angular and radial position of the channels in the previous cavity is different from the angular and radial position of similar channels in the subsequent cavity, and the diameter of the said channels decreases from the periphery to the center of the mixing head, while these annular cavities of the fuel components are connected to the corresponding cavities for supplying components through said end cavities formed by profiled bottoms.

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