CN203454139U

CN203454139U - Burner with automatic air volume control function

Info

Publication number: CN203454139U
Application number: CN201320530617.5U
Authority: CN
Inventors: 张兵; 孟祥东
Original assignee: QINGDAO JOWON MECHANICAL AND ELECTRICAL CO Ltd
Current assignee: QINGDAO JOWON MECHANICAL AND ELECTRICAL CO Ltd
Priority date: 2013-08-27
Filing date: 2013-08-27
Publication date: 2014-02-26
Anticipated expiration: 2023-08-27

Abstract

The utility model discloses a burner with an automatic air volume control function. The burner comprises an ignition system, a fuel system, an electric control system and an air volume control system, wherein the air volume control system comprises a shell, a fan, an air door controller, a diffusion disc and a monitoring device; the monitoring device comprises an X-ray on-line detector, a smoke sensor and a temperature sensor; a plurality of oblique through holes are formed in the diffusion disc; the fan conveys external air to enter a combustor through the air door controller and the diffusion disc in sequence; the diffusion disc rotates to adjust and control the air inlet angle of the external air; the external air forms a swirling eddy to enter the combustor; the air volume control system timely adjusts the proportion of air and gas in the burner and the size of gas flow according to the detected smoke exhaust rate, the smoke carbon content and the smoke temperature parameter. The burner with the automatic air volume control function has the characteristics that the burning is sufficient and stable, the heat utilization rate is high, the heat loss is small, and the like.

Description

Automatically the burner of controlling with air quantity

Technical field

The utility model relates to a kind of burner, particularly a kind of burner of automatically controlling with air quantity.

Background technology

Burner, as a kind of widely used combustion apparatus, can be divided into following system from the function of its realization: air inlet system, ignition system, monitoring system, fuel system and electric-control system.

In prior art, ordinary burner air inlet system structural design is generally linear pattern air intake duct, and straight air-flow and the fuel mix of formation are insufficient, and it only carries out air quantity control by a simple mechanical device, cannot be in time, automatically control accurately.When air inflow hour, cause burning insufficient; When air inflow is excessive, while causing discharging fume, heat loss is also larger.

The input heat of burner equates with quantity of heat given up, and its heat balance equation can be expressed as:

Q _r=Q _e+Q ₁+Q ₂+Q ₃+Q ₄

In formula:

Q _r-input heat

Q _e-effectively utilize heat

Q ₁-heat loss due to exhaust gas

Q ₂-radiation loss

Q ₃-heat loss due to unburned gas

Q ₄the loss of-fume high-temperature decomposition heat

Based on above-mentioned heat balance equation, correspondingly, the thermal efficiency η of this burner:

η = \frac{Q_{e}}{Q_{r}} \times 100 % = \frac{Q_{r} - Σ Q_{1 - 4}}{Q_{r}} \times 100 %

From above formula, can find out: improve the efficiency of utilization of burner, just need to increase as far as possible and effectively utilize heat Q _eaccounting.That is, reduce as far as possible the various heat losses such as heat loss due to exhaust gas, radiation loss, heat loss due to unburned gas and the loss of fume high-temperature decomposition heat.

By automation air quantity control device, various process parameters in burner combustion process is approached as far as possible or reach ideal burning condition required every technic index and parameter, the ideal burning state that keeps burner fuel, reduce heat and run off, for improving the thermal efficiency, have great importance.

Utility model content

The purpose of this utility model is that rationally intake in control combustion device, ensures adequacy and the stability of burning, and reduces smog discharge temperature, improves burner internal combustion quality, improves combustion thermal efficiency.

For achieving the above object, the technical problem that solve is that how rationally intake in control combustion device, ensures adequacy and the stability of burning, and reasonably reduces the technical problem of smoke discharge amount and smog discharge temperature to the utility model.

The utility model is to solve the problems of the technologies described above adopted technical scheme to be, a kind of burner of automatically controlling with air quantity, comprises ignition system, fuel system, electric-control system; It also includes air quantity control system, and this air quantity control system comprises housing, blower fan, air damper controller, diffusion disc and monitoring device;

Described monitoring device includes X-ray on-line detector, flue gas sensor and temperature sensor;

On described diffusion disc, offer some inclined via-holes;

Described blower fan carries extraneous air through air damper controller, diffusion disc, to enter in combustion chamber successively;

Described diffusion disc is the air inlet angle with adjustment and control extraneous air by rotation, and extraneous air formation swirling eddy is entered in described combustion chamber;

Phosphorus content and flue-gas temperature parameter in the exhaust smoke level of the burner that described air quantity control system detects respectively by its x-ray on-line detector, flue gas sensor and temperature sensor, flue gas, air and the ratio of combustion gas and the size of gas flow in timely adjustment burner.

The beneficial effect that technique scheme directly produces is, the air quantity control system of burner controls and regulates intake and the wind speed of combustion chamber automatically according to load, timely adjustment burning room air and the ratio of combustion gas and the size of gas flow, this is conducive to control and regulate in real time the geometry of combustion flame, assurance combustion chamber combustion process can be carried out all the time under the state of oxygen abundance, thereby guaranteed to possess all the time good burning condition and the stability of burning in combustion chamber, improved the burning quality in combustion chamber;

Secondly, extraneous air enters in combustion chamber with the form of swirling eddy, in burner, form swirling eddy, this has strengthened and fully the mixing of fuel, eliminated " dead band " in burner, further improve the burning quality in combustion chamber, and accelerated the flame mechanism in combustion chamber, improved efficiency of combustion;

Again, there is certain corresponding relation between final smoke discharge amount afterwards in the intake of burner and its burning.That is to say, the reasonable control of burner intake is also conducive to reduce its unnecessary reduction smoke discharge amount, is also conducive to rationally control the temperature of fume emission;

As preferably, the weight ratio ratio of above-mentioned air and fuel is 1.2-1.4: 1.

The technique effect that this optimal technical scheme produces is, combustion chamber combustion process, all the time in oxygen enrichment state, makes the combustion reaction of fuel fully, thoroughly, reduced because of the heat waste of fuel combustion due to insufficient, improved the heat utilization efficiency of burner.

As preferably, the admission pressure of said burner equals the flow resistance of the exhaust of described burner.

This is conducive to keep the balance of air-flow in burner and stablize, and reduces as far as possible smoke discharge amount, thereby reduce meaningless heat waste on the basis that guarantees fuel combustion adequacy.

As preferably, above-mentioned flue gas recirculation is for the auxiliary air of preheat burner.

The technique effect that this optimal technical scheme produces is, can recycle the waste heat in the flue gas that burner discharges, and reduces to greatest extent heat waste, improves the heat utilization efficiency of burner.And the preheating of burner auxiliary air, can play the effect of steady flame that refluxes, thereby guaranteed the stability of burning.

Accompanying drawing explanation

Fig. 1 is the burner structure schematic diagram of automatically controlling with air quantity of the present utility model;

Fig. 2 is the burner operation principle schematic of automatically controlling with air quantity of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing, the burner of automatically controlling with air quantity of the present utility model is described in detail:

Fig. 1, Fig. 2 are respectively structural representation and the operation principle schematic diagram thereof of a preferred embodiment of burner of automatically controlling with air quantity.

As depicted in figs. 1 and 2, the burner of automatically controlling with air quantity of the present utility model, comprises ignition system 3, fuel system 2, electric-control system 4; It also includes air quantity control system 1, and this air quantity control system 1 includes housing 5, blower fan 6, air damper controller 7, diffusion disc 8, monitoring device 9.

Wherein, the inside of monitoring device 9 is provided with X-ray on-line detector, flue gas sensor and temperature sensor;

On the diffusion disc 8 of this air quantity control system 1, offer some inclined via-holes 12;

Blower fan (omit in figure, do not draw) carries extraneous air through air damper controller 7, diffusion disc 8, to enter in combustion chamber 14 successively;

Diffusion disc 8 is the air inlet angle with adjustment and control extraneous air by rotation, and extraneous air formation swirling eddy is entered in combustion chamber 14;

Phosphorus content and flue-gas temperature parameter in the exhaust smoke level of the burner that air quantity control system 1 detects respectively by monitoring device 9, flue gas, air and the ratio of combustion gas and the size of gas flow in timely adjustment burner.

Experiment showed, in the above-mentioned burner combustion process with air quantity control system, the weight ratio proportion control of the air in combustion chamber 14 and fuel is at 1.2-1.4: during 1 scope, its combustion efficiency is best;

When the admission pressure of burner equals the flow resistance of exhaust of described burner, be conducive to keep the balance of air-flow in burner and stable.

Claims

1. a burner of automatically controlling with air quantity, comprises ignition system, fuel system, electric-control system; It is characterized in that, also include air quantity control system, described air quantity control system includes housing, blower fan, air damper controller, diffusion disc and monitoring device;

On described diffusion disc, offer some inclined via-holes;

Described diffusion disc is the air inlet angle with adjustment and control extraneous air by rotation, and extraneous air formation swirling eddy is entered in described combustion chamber

Described air quantity control system by described monitoring device respectively by the exhaust smoke level of the burner detecting, flue gas phosphorus content and flue-gas temperature parameter, air and the ratio of combustion gas and the size of gas flow in timely adjustment burner.

2. the burner of automatically controlling with air quantity according to claim 1, is characterized in that, the weight ratio ratio of described air and fuel is 1.2-1.4: 1.

3. the burner of automatically controlling with air quantity according to claim 1, is characterized in that, the admission pressure of described burner equals the flow resistance of the exhaust of described burner.