CN113483313A - Energy-efficient combustion chamber system - Google Patents

Abstract

The invention discloses a high-efficiency and energy-saving combustion chamber system, comprising a pre-combustion module for fully mixing air and gas and generating and stabilizing ignition flames, and a main combustion chamber for main flame combustion and steam generation. The combustion module is arranged on the top of the main combustion chamber and is connected to the main combustion chamber. By setting the venturi nozzle, the air flow is used to generate negative pressure in the gap area of the annular opening, and the gas in the gas pipeline is entrained and mixed. Ensure that the gas and air are mixed in a proportion that meets the requirements of chemical combustion to achieve the effect of full combustion, and solve the problem of insufficient fuel combustion in the prior art, resulting in energy waste; by setting an ignition module, the gas-air mixture is ignited in the main combustion chamber , to generate a stable main flame, the main flame quickly heats the moisture on the inner side wall of the main combustion chamber, making it evaporate to produce a large amount of steam in a short time, and can continue to produce, the steam production process is efficient and safe.

Description

Energy-efficient combustion chamber system

Technical Field

The invention relates to a steam combustion chamber, in particular to a high-efficiency energy-saving combustion chamber system.

Background

The conventional steam generating equipment is a conventional boiler, the operation of the conventional steam boiler needs to be continuous, the temperature needs to be kept even if steam is not needed, the energy consumption is large, the occupied area is very large, and the safety performance is low. In order to achieve the purposes of convenient use and no need of reporting inspection, some small steam generators are gradually appeared on the market, but the temperature is not high, the steam quantity is not large, and the steam generators are difficult to be used in occasions requiring a large quantity of steam, such as the maintenance of concrete products and the like.

Because traditional boiler need heat a large amount of water earlier, and need carry out the temperature and keep, even need keep warm under the condition that does not need steam, can cause a large amount of energy extravagant, and its combustion chamber structure is in different cavities with the output structure of steam, can discount greatly on the transmission efficiency of energy, cause the waste of resource, and it can't be in the high-efficient output steam of short time, the preparation time is long, for this reason, we propose a high-efficient energy-saving combustion chamber system.

Disclosure of Invention

The invention aims to provide an efficient and energy-saving combustion chamber system.

The technical problem solved by the invention is as follows:

(1) by arranging the venturi nozzle, the negative pressure is generated in the gap area of the annular opening by utilizing the air flow to entrain and mix the fuel gas in the fuel gas pipeline, so that the fuel gas and the air are mixed according with the requirement proportion of chemical combustion, the effect of full combustion is achieved, and the problem of energy waste caused by insufficient fuel combustion in the prior art is solved;

(2) how through setting up the ignition module, light gas-air mixture at the main combustion chamber, produce stable main flame, main flame carries out rapid heating to the moisture on the inside wall of main combustion chamber, makes its evaporation vaporization output a large amount of steam in the short time, and can continuously carry out the output, has solved the problem that output time is slow among the prior art, and the thermal efficiency is not high.

The invention can be realized by the following technical scheme: the utility model provides an energy-efficient combustion chamber system, is including being used for to the intensive mixing of air and gas and the production and the stable precombustion module of lighting flame and the main combustion chamber that is used for main flame burning and steam production, and the precombustion module sets up at the top of main combustion chamber, and with main combustion chamber through connection.

The invention has further technical improvements that: the pre-combustion module comprises a water-cooling ignition chamber, the side wall of the water-cooling ignition chamber is arranged to be of a double-layer cavity structure, circulating cooling water is arranged in the double-layer cavity structure, and heat inside the water-cooling ignition chamber is isolated.

The invention has further technical improvements that: an air pipeline is arranged right above the water-cooled ignition chamber, an air rectifier is arranged at the connecting part of the air pipeline and the water-cooled ignition chamber, the air rectifier is specifically a circular plate with the inner diameter equivalent to that of the air pipeline, a plurality of grids with the same size are arranged on the circular plate, and air flow conveyed by the air compressor and with the flow speed inconsistent with the direction is rectified through the air rectifier.

The invention has further technical improvements that: a venturi nozzle is arranged below the air rectifier, an annular opening is formed in the venturi nozzle, and air flow enters the venturi nozzle after being processed by the air rectifier.

The invention has further technical improvements that: one side through connection of water-cooling ignition chamber has the gas pipeline, and the annular opening position of the position venturi nozzle of the tip of gas pipeline is corresponding, and after the valve of gas pipeline was opened, the air current through the venturi nozzle can produce the negative pressure in the tip position of gas pipeline, carries out the entrainment to the gas in it, and the gas that is absorbed by the entrainment mixes in entering into the venturi nozzle with the air.

The invention has further technical improvements that: an impact disc is arranged right below the Venturi nozzle, the height of the impact disc relative to the Venturi nozzle is adjustable, and the gas-air mixed gas collides with the impact disc to rebound, so that disturbance is caused to the gas-air mixed gas flow, and the air and the gas can be completely mixed.

The invention has further technical improvements that: the ignition module is obliquely arranged at the top of the pre-combustion module, an ignition generator and a spark plug are arranged in the ignition module and communicated with an ignition air pipe, a gas pipeline is closed in the process of generating ignition flame, fuel in the ignition air pipe is mixed with air and is ignited by the spark plug to generate ignition flame, and then the gas-air mixed gas is ignited by the ignition flame to generate main flame in the main combustion chamber.

The invention has further technical improvements that: the gas velocity at the annular opening of the venturi nozzle is higher than the propagation velocity of the main flame, which cannot retract into the uncooled area above the pre-cooled ignition chamber.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall external structure of the present invention;

FIG. 2 is a schematic view of the internal structural connection of the pre-combustion module of the present invention;

FIG. 3 is a schematic perspective view of a venturi nozzle of the present invention.

In the figure: 1. a main combustion chamber; 2. a pre-combustion module; 3. a water-cooled ignition chamber; 4. an air line; 5. a gas pipeline; 6. an ignition module; 7. an air rectifier; 8. a venturi nozzle; 9. an impact disk; 61. igniting the air pipe; 81. and an annular opening.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be given with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1-3, an energy-efficient combustion chamber system includes a pre-combustion module 2 and a main combustion chamber 1, wherein the pre-combustion module 2 is disposed at the top of the main combustion chamber 1 and is connected to the main combustion chamber 1;

the pre-combustion module 2 is arranged for fully mixing air and fuel gas and generating and stabilizing ignition flame, the pre-combustion module 2 comprises a water-cooled ignition chamber 3, the side wall of the water-cooled ignition chamber 3 is arranged into a double-layer cavity structure, circulating cooling water is arranged in the double-layer cavity structure, an air pipeline 4 is arranged right above the water-cooled ignition chamber 3, an air rectifier 7 is arranged at the connecting part of the air pipeline 4 and the water-cooled ignition chamber 3, the air rectifier 7 is specifically a circular plate with the inner diameter equivalent to that of the air pipeline 4, a plurality of grids with the same size are arranged on the circular plate, air flow in the air pipeline 4 is conveyed by an air compressor and reaches the position of the air rectifier 7, the flow rate and the direction of each part in the air flow are different at the moment, and the air rectifier 7 is required to rectify the air flow to enable the air flow to be uniform, a Venturi nozzle 8 is arranged below the air rectifier 7, and uniform air flow enters the Venturi nozzle 8; the provision of the air rectifier 7 is necessary because if the gas flow rates in the venturi nozzle 8 are different, the ratio of the gas-air mixture for combustion fluctuates widely and drastically.

One side through connection of water-cooling ignition chamber 3 has gas pipeline 5, be provided with annular opening 81 on the venturi nozzle 8, the position of the tip of gas pipeline 5 annular opening 81 of venturi nozzle 8 is corresponding, after the valve of gas pipeline 5 was opened, the air current through venturi nozzle 8 can produce the negative pressure at the tip position of gas pipeline 5, carry out the entrainment to the gas in it, and enter into venturi nozzle 8 inside together and carry out preliminary mixing, annular opening 81 clearance size of venturi nozzle 8 is according to the wind pressure, wind speed and natural gas pressure and velocity of flow calculation decision, the fuel can be with accurate metering ratio best and air mixing.

An impact disc 9 with adjustable height is arranged right below the Venturi nozzle 8, the gas-air mixed gas which is primarily mixed through the Venturi nozzle 8 collides and rebounds with the impact disc 9, so that the gas-air mixed gas flow is disturbed, the air and the gas can be completely mixed, the height between the air outlet positions of the impact disc 9 and the Venturi nozzle 8 is adjusted according to the mixing ratio of the gas and the air, the air flow rate in front of the Venturi nozzle 8 is enabled to best accord with the Venturi effect, and the gas can be uniformly sucked through an annular opening 81 of the Venturi nozzle 8;

the fuel and the air are mixed in an accurate metering ratio, the fuel and the air are determined based on the combustion reaction ratio of oxygen in the air and alkane gas in the fuel gas, the fuel gas-air mixed gas is ignited by ignition flame generated by an ignition module 6 arranged after entering a water-cooling ignition chamber 3, and main flame is generated in a main combustion chamber 1, at the moment, the flow speed of the ignited fuel gas-air mixed gas is slower than the propagation speed of the main flame through the disturbance of an impact disc 9, so the generated main flame can be stably combusted in the main combustion chamber 1; meanwhile, even if the main flame is unstably retracted, the main flame cannot enter a region above the precooling ignition chamber which is not cooled by cooling water, and the gas flow speed at the position of the annular opening 81 of the venturi nozzle 8 is always higher than the propagation speed of the main flame, so that the hidden danger that the flame ignites the gas in the gas pipeline 5 does not exist, and the use safety is high;

the ignition module 6 is obliquely arranged at the top of the pre-combustion module 2, an ignition generator and a spark plug are arranged in the ignition module 6 and communicated with an ignition air pipe 61, the gas pipeline 5 is closed in the process of generating ignition flame, fuel and air in the ignition air pipe 61 are mixed and ignited by the spark plug to generate ignition flame, a valve of the gas pipeline 5 is opened after the ignition flame is stabilized, and the gas enters and is converged with the ignition flame, so that main flame is safely generated;

the side wall of the main combustion chamber 1 is provided with a water supply unit in a run-through manner, after the main flame is stably combusted in the main combustion chamber 1, the water supply unit is connected to enable water flow to overflow to the side wall of the inner cavity from the top of the main combustion chamber 1, the water flow is close to the main flame, a large amount of heat is absorbed in a short time and is quickly evaporated and vaporized to generate a large amount of high-temperature steam, and the mixture ratio of gas and air is accurately metered and controlled, so that mixed gas can be fully combusted, the heat efficiency is high, the generated heat loss is less, the energy consumption is greatly saved, and as the water supply in the main combustion chamber 1 is not limited by capacity, as long as the conditions permit, namely, the main flame keeps combusting and the water supply, the steam can be stably generated in the main combustion chamber 1 all the time, the economy and the steam output time is greatly shortened, and the overheating phenomenon can not occur in the combustion chamber system due to the continuous supply of cold water flow, the safety performance is high.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. A high-efficiency and energy-saving combustion chamber system is characterized in that: comprising a pre-combustion module (2) that is used for fully mixing air and gas and the generation of ignition flame and stability and a pre-combustion module (2) for main flame combustion and steam output. In the main combustion chamber (1), the pre-combustion module (2) is arranged on the top of the main combustion chamber (1), and is connected through the main combustion chamber (1). 2. A high-efficiency and energy-saving combustion chamber system according to claim 1, characterized in that, the pre-combustion module (2) comprises a water-cooled ignition chamber (3), and the sidewall of the water-cooled ignition chamber (3) is provided with a double-layer air chamber. In the cavity structure, circulating cooling water is arranged in the double-layer cavity structure to isolate the heat inside the water-cooled ignition chamber (3). 3. A high-efficiency and energy-saving combustion chamber system according to claim 2, characterized in that, an air pipeline (4) is arranged directly above the water-cooled ignition chamber (3), and the air pipeline (4) is connected with the water-cooled ignition chamber. The connecting part of the chamber (3) is provided with an air rectifier (7), the air rectifier (7) is specifically a circular plate with the inner diameter of the air pipeline (4), and a plurality of grids of the same size are opened on the circular plate The air rectifier (7) is used to rectify the air flow whose flow rate and direction are inconsistent with the air compressor. 4. A kind of high-efficiency and energy-saving combustion chamber system according to claim 3, characterized in that, a venturi nozzle (8) is provided below the air rectifier (7), and an annular opening (81) is provided on the venturi nozzle (8). ), the air flow enters the venturi nozzle (8) after being processed by the air rectifier (7). 5. A high-efficiency and energy-saving combustion chamber system according to claim 4, characterized in that a gas pipeline (5) is connected through one side of the water-cooled ignition chamber (3), and the end of the gas pipeline (5) The position of the annular opening (81) of the venturi nozzle (8) corresponds to the position of the annular opening (81) of the venturi nozzle (8). When the valve of the gas pipeline (5) is opened, the air flow through the venturi nozzle (8) will be at the end of the gas pipeline (5). Negative pressure is generated at the upper position, and the gas in it is entrained, and the entrained gas and air enter the venturi nozzle (8) for mixing. 6. A high-efficiency and energy-saving combustion chamber system according to claim 3, characterized in that, an impact disk (9) is provided directly below the venturi nozzle (8), and the impact disk (9) is opposite to the venturi nozzle (8). 8) The height is adjustable, and the gas-air mixed gas collides and rebounds with the impact disc (9), thereby disturbing the gas-air mixed gas flow to ensure that the air and the gas can be completely mixed. The high-efficiency and energy-saving combustion chamber system according to claim 1, characterized in that, an ignition module (6) is provided on the top of the pre-combustion module (2) slantingly, and an ignition module (6) is provided with an ignition module (6). The generator and the spark plug are connected to the ignition gas pipe (61). During the process of generating the ignition flame, the gas pipeline (5) is closed, the fuel in the ignition gas pipe (61) is mixed with air, and ignited by the spark plug to generate the ignition flame, which is then passed through The ignition flame ignites the gas-air mixture and generates the main flame in the main combustion chamber (1). 8. A kind of high-efficiency and energy-saving combustion chamber system according to claim 7, is characterized in that, the gas flow velocity at the annular opening (81) position of venturi nozzle (8) is higher than the propagation speed of main flame, and the main flame cannot. Recess into the uncooled area above the water-cooled ignition chamber (3).

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