CN205560746U - Low NOx of low noise discharges energy -conserving high -efficient gas nozzle of environmental protection - Google Patents
Low NOx of low noise discharges energy -conserving high -efficient gas nozzle of environmental protection Download PDFInfo
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- CN205560746U CN205560746U CN201620333824.5U CN201620333824U CN205560746U CN 205560746 U CN205560746 U CN 205560746U CN 201620333824 U CN201620333824 U CN 201620333824U CN 205560746 U CN205560746 U CN 205560746U
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- low noise
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Abstract
The utility model discloses a low NOx of low noise discharges energy -conserving high -efficient gas nozzle of environmental protection, including a burning section of thick bamboo, set up nozzle chamber, its characterized in that in the burning section of thick bamboo: air volume regulator is passed through in the nozzle chamber and venturi is connected to cloth wind ware, the other one end of venturi generates the piece with the spiral air current and is connected, the spiral air current generates the piece to be connected with the mixed muffler of temperature reinforcing, and the temperature reinforcing mixes the muffler setting in the amortization cover. The utility model has the advantages that: rational in infrastructure, the cooperation is accurate, accords with the combustion principle, has realized that low noise, low NOx discharge.
Description
Technical field
This utility model relates to the combustor section of large space infrared radiation heating system, is more specifically a kind of burner.
Background technology
1) along with the attention of Environmental protection and the Compulsory Feature to industry energy conservation reduction of discharging, more strict requirements are proposed the index of the gas-fired equipment exhaust emissions on market；
2) current, large space gas-fired infrared radiant heating system field at home, having widely applied gas-fired radiation burner, the fuel assembly major part design comparison of such burner is simple, and burning electric hybrid module substantially uses cup type nozzle structure, single form venturi tube structure several.The most all there is exhaust emissions defective, NOx (nitrogen oxides) discharges severe overweight, and although fraction gas burner designs according to low NOx, but the conventional fuel design principle used, or there is no corresponding theoretical research and method for designing research, properties of product are unstable, so that emission effect is not very good.
3) so far, in infrared radiation heating field, the gas burner used is demarcated and run noise major part is not higher than 60db, and in actual applications, because combustion gas classification and the difference of combustion gas makings parameter, major part burner runs noise and is more than demarcated 60db.Because heating in large space Factory Building, often installing large number of radiation device, the tail gas amount of outer row is the biggest per hour, and the equipment noise pollution that multiple devices run simultaneously also can not be ignored.
Summary of the invention
For solving above-mentioned technical problem, the purpose of this utility model is to provide a kind of rational in infrastructure, coordinates precision, meets the Novel burner nozzle of the theory of combustion, and this concrete technical scheme is as follows:
A kind of low noise low NOx drainage environment protection energy-saving efficient fuel burner nozzle, including combustion barrel, arranges nozzle chambers in combustion barrel, it is characterised in that: nozzle chambers connects Venturi tube by blast regulator and ventilation terminal；Venturi tube other end generates sheet with spiral air flow and is connected；Spiral air flow generates sheet and is connected with temperature enhancing mixing deafener, and temperature strengthens mixing deafener and is arranged in silencer cover.
It is steering wheel type that described spiral air flow generates plate shape.
The utility model has the advantages that: rational in infrastructure, coordinate precision, meet the theory of combustion, it is achieved that low noise, low NOx drainage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is three-dimensional connection diagram；
Fig. 3 is the schematic perspective view after the parts assembling of Fig. 2.
Detailed description of the invention
Illustrating this utility model below in conjunction with the accompanying drawings, as shown in Figure 1-Figure 3, this utility model includes combustion barrel 1, arranges nozzle chambers 2 in combustion barrel 1, and nozzle chambers connects Venturi tube 6 by blast regulator 3 and ventilation terminal 4；Venturi tube 6 other end generates sheet 5 with spiral air flow and is connected；Spiral air flow generates sheet 5 and is connected with temperature enhancing mixing deafener 8, and temperature strengthens mixing deafener 8 and is arranged in silencer cover 7.
Described spiral air flow generates sheet 5 and is shaped as steering wheel type.
Operation principle of the present utility model and theory analysis:
Low-noise structure is analyzed: Fig. 1 is burner assembly profile
Test condition:
Force combustion air pressure: 3mbar；
Natural gas nozzle exit pressure: 1.6mbar；
Gas flow: 5.35Nm3/h；
Test desired detecting instrument:
Digital pressure gauge, immersion couple temperature measuring device, thermal imaging system, surface temperature tester, noise tester, meter ruler；
According to above-mentioned test condition and detecting instrument, test the interpretation of result such as table 1 arranging at assembly 3,4,5,8 and cancelling under two states.
Table 1
Test result explanation according to list above, iff the venturi burner of use monomer structure, the indices of burner is not the most the most preferable.
The workflow arranging assembly 3,4,5,8 illustrates:
Forcing combustion air on the premise of pressure is certain, first pass around air quantity adjustment sheet 3 and ventilation terminal 4, the size of adjustment sheet sets according to corresponding burner rating.Because the reason of the turning effort of aerator forced air supply and draught fan impeller, air kinetic energy when leaving fan outlet is very big, and air stream becomes dynamic rotary pattern to advance, when through ventilation terminal 4, this inappropriate kinetic energy is cut in, and disorderly air stream is rearranged.Meanwhile, air from blower fan mouth out time noise be lowered by 70%；Combustion air enters the cavity between assembly 5 and assembly 4 afterwards, cavity section configuration is front wide and rear narrow, air is through the space of assembly 5 with tube wall, because runner narrows, according to venturi principle, decrease in air pressure now, speed is accelerated, when air crosses assembly 5 (spiral air flow generation sheet), because the special construction of assembly 5, make the spiral advance at the uniform velocity of air uniformly rule, enter in combustion tube (combustor), meet with the flame after lighting, because the effect of spiral, air stream sweeps along flame to advance, make to form space between flame and burning tube wall, decrease flame and the friction of closedown and shock, thus decrease flame at the noise leaving the generation of bocca moment.
Key point of the present utility model is the increase in assembly 3,4,5,8, combustion air state is further accelerated to current stabilization from turbulent flow and eventually forms eddy flow.
Low NOx drainage structural analysis: with Fig. 1 for reference to explanation；
With table 1 operational factor as test condition；
The instrument and meter that test needs:
Digital pressure gauge, immersion couple temperature measuring device, thermal imaging system, surface temperature tester, fume component analysis instrument (can measure CO, NOx, O2, CO2 (value of calculation)
Test the interpretation of result such as table 2 arranging at assembly 7,8 and cancelling under two states；
Table 2
The theory analysis of increase assembly 7 and 8:
During fuel gas buring, mainly there are three kinds of modes in the source producing NOx:
Fuel type: because containing nitrogen compound in fuel, generate through oxidation after burning；
Temperature mode: because the nitrogen content accounting about 78% in air, nitrogen is oxidized to nitride under high temperature action；
Imperfect combustion type: air-fuel ratio is improper, oxygen-supplying amount deficiency easily forms nitride；
Present invention is generally directed to latter two factor and propose solution.
Imperfect combustion solution:
Combustion gas with certain kinetic energy ejection, under the effect of injection and forced air supply, introduces a part of combustion air and the most tentatively mixes in nozzle chambers 2, now air under-supply combustion gas overrich, and mixture concentration is uneven.Through trunnion, mixed gas flow velocity strengthens, and in making nozzle chambers, negative pressure raises, introduce more air, enter venturi anemostat afterwards and again mix, through silencer cover position, again sucking air to carry out mixing for the third time, at this moment the concentration of mixed gas has reached optimal air-fuel ratio.Mixed gas, when excess temperature strengthens mixing deafener 8, because the porous character of these parts, makes mixed gas be divided into some drafts and sprays with mist and be ignited.This kind of structure, can make combustion air and combustion gas carry out stepped mixing, atomized spray, the problem solving to burn completely；
Temperature mode solution:
Mainly it is shortened by high-temperature flue gas in thermal-flame district residence time, is allowed to speed away；The spiral air stream that the combustion gas being ignited produces because of the effect of assembly 5 drags rapidly combustion chamber high temperature district away from, suppresses the generation of temperature mode nitride with this；Because Gas-fired Radiant Heating is middle low form burner, flame kernel temperature ratio is relatively low, so the nitrogen in air is difficult to be oxidized to nitride.
Claims (1)
1. a low noise low NOx drainage environment protection energy-saving efficient fuel burner nozzle, including combustion barrel, arranges nozzle chambers in combustion barrel, it is characterised in that: nozzle chambers connects Venturi tube by blast regulator and ventilation terminal；Venturi tube other end generates sheet with spiral air flow and is connected；Spiral air flow generates sheet and is connected with temperature enhancing mixing deafener, and temperature strengthens mixing deafener and is arranged in silencer cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620333824.5U CN205560746U (en) | 2016-04-19 | 2016-04-19 | Low NOx of low noise discharges energy -conserving high -efficient gas nozzle of environmental protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620333824.5U CN205560746U (en) | 2016-04-19 | 2016-04-19 | Low NOx of low noise discharges energy -conserving high -efficient gas nozzle of environmental protection |
Publications (1)
| Publication Number | Publication Date |
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| CN205560746U true CN205560746U (en) | 2016-09-07 |
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| CN201620333824.5U Active CN205560746U (en) | 2016-04-19 | 2016-04-19 | Low NOx of low noise discharges energy -conserving high -efficient gas nozzle of environmental protection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI661158B (en) * | 2018-05-09 | 2019-06-01 | 關隆股份有限公司 | Gas burner |
| CN114985138A (en) * | 2022-04-21 | 2022-09-02 | 浙江工业大学 | Make things convenient for nozzle core to adjust nozzle of making an uproar that falls |
-
2016
- 2016-04-19 CN CN201620333824.5U patent/CN205560746U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI661158B (en) * | 2018-05-09 | 2019-06-01 | 關隆股份有限公司 | Gas burner |
| CN114985138A (en) * | 2022-04-21 | 2022-09-02 | 浙江工业大学 | Make things convenient for nozzle core to adjust nozzle of making an uproar that falls |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |