CN201526971U - Natural gas tip - Google Patents
Natural gas tip Download PDFInfo
- Publication number
- CN201526971U CN201526971U CN2009202170923U CN200920217092U CN201526971U CN 201526971 U CN201526971 U CN 201526971U CN 2009202170923 U CN2009202170923 U CN 2009202170923U CN 200920217092 U CN200920217092 U CN 200920217092U CN 201526971 U CN201526971 U CN 201526971U
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- CN
- China
- Prior art keywords
- combustion chamber
- spray
- group
- natural gas
- hole
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- Expired - Lifetime
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Abstract
The utility model provides a natural gas tip, which comprises housing, an igniting electrode, a first group of injection pores, a flue gas pipe, an air passage, a sub combustion chamber, a second group of injection pores and a main combustion chamber, wherein the igniting electrode and the flue gas pipe are respectively fixed onto the housing, the natural gas is supplied to the combustion chamber through the flue gas pipe, the air passage supplies the air in need, the natural gas and the air are mixed into a mixed gas in the combustion chamber, and the igniting electrode is extended to the sub combustion chamber. The utility model is characterized in that the combustion chamber is divided into the main combustion chamber and a sub combustion chamber, and a first group of injection pores and a second group of injection pores are provided on the wall of the sub combustion chamber. According to the utility model, the burning of the natural gas can effectively lowers the temperature of the burning, so that the generation of nitrogen oxide is greatly reduced, the emission is further lowered.
Description
Technical field
The utility model relates to a kind of natural gas burner, particularly a kind of burner that is widely used in continuous zinc coating line, silicon steel line annealing furnace and other heat-treatment furnace.
Background technology
Along with primary energy day is becoming tight, and the enhancing day by day of popular environmental consciousness, energy utilization rate maximization and effective reduction pollutant emission are the important topics that we face, in the combustion system of heat-treatment furnace, burner is being updated.Under the needed thermic load situation of heat-treatment furnace, should guarantee the completing combustion of fuel, thing reduces pollution emissions as far as possible, reduce the generation of nitrogen oxide, take certain control measure again, guarantee smooth combustion in the heat capacity excursion of regulation, make flame have certain profile and rigidity.
Usually used various radiation pipe burner tips in the past, in recent years, from this point of environmental protection, the method that the amount of the NOx that contains in the burnt gas of research after utilizing radiation pipe burner tip to make burning reduces.
In order to reduce the amount of the NOx that contains in the burnt gas, open the Japan Patent spy and to disclose a kind of in radiant tube, be provided with the combustion air supply pipe of supplying with combustion air and the radiation pipe burner tip that is provided with the fuel gas supply pipe of supplying with fuel gas in the inside of this combustion air supply pipe in the clear 63-116011 communique.
At this, in this radiation pipe burner tip, the primary combustion that in making, supplies with via the combustion air supply pipe supply with air with via described fuel gas supply pipe that the fuel gas that comes mixes in combustion barrel with the state of fuel gas surplus and imperfect combustion after, make and supply with the second-time burning that comes via the outside of described combustion air supply pipe and mix also completing combustion with air.In addition, if burn with two stages like this, then can suppress flame temperature and become too high, can reduce the amount of the NOx in the burnt gas, but can not guarantee to produce stable burning, in the occasion that the combustion air supply pipe of supplying with combustion air is set in radiant tube like this separately, there are the following problems: the manufacturing cost height of radiant tube, and be difficult to make the amount of the NOx in the burnt gas further to reduce.
Summary of the invention
The purpose of this utility model is to provide a kind of natural gas burner, its when guaranteeing smooth combustion, can further reduce cost and burnt gas in the NOx amount.
The utility model provides a kind of natural gas burner, it comprises housing, ignitor, first group of spray-hole, Gas Pipe, air duct, subsidiary combustion chamber, second group of spray-hole and main chamber, wherein ignitor and Gas Pipe are separately fixed on the housing, natural gas is supplied with natural gas by Gas Pipe to the combustion chamber, air duct provides the burning required air, natural gas and air mix the generation mist in the combustion chamber, ignitor stretches in the subsidiary combustion chamber, it is characterized in that, the combustion chamber is divided into subsidiary combustion chamber and main chamber, comprises first group of spray-hole and second group of spray-hole on the wall of subsidiary combustion chamber.
Between first group of spray-hole and second group of spray-hole step part is set, the shell of subsidiary combustion chamber and described main chamber all is a ceramic material.The inner surface of subsidiary combustion chamber is set to smooth surface.
First group of spray-hole comprises 2 spray-holes with the predetermined space equal spacings that align with longitudinal center's axis of subsidiary combustion chamber along the center, and second group of spray-hole comprises 6 spray-holes with the predetermined space equal spacings that align with longitudinal center's axis of subsidiary combustion chamber along the center.
The number of first group of spray-hole also can be 4, and the number of second group of spray-hole can be 8.
Advantage of the present utility model is that the combustion chamber is divided into main chamber and subsidiary combustion chamber, on the wall of subsidiary combustion chamber spray-hole is set, and has reduced ignition temperature effectively, greatly reduces the generation of nitrogen oxide, and has saved radiant tube, has further reduced cost.
Description of drawings
Fig. 1 is the schematic diagram with natural gas burner of subsidiary combustion chamber of the present utility model.
Fig. 2 is that the A of subsidiary combustion chamber of the present utility model is to view.
The specific embodiment
As shown in Figure 1, ignitor 2 and Gas Pipe 4 are separately fixed on the housing 1, and natural gas is supplied with natural gas by Gas Pipe 4 to the combustion chamber, and the combustion chamber is divided into subsidiary combustion chamber 6 and main chamber 8, and the shell of subsidiary combustion chamber 6 and main chamber 8 all is a ceramic material.
As shown in Figure 2, subsidiary combustion chamber 6 walls comprise first group of spray-hole and second group of spray-hole.First group of spray-hole comprises two spray-holes 3 with predetermined space (180 degree) equal spacings that align with longitudinal center's axis of subsidiary combustion chamber 6 along the center, second group comprises six spray-holes 7 with predetermined space (60 degree) equal spacings that align with longitudinal center's axis of subsidiary combustion chamber along the center, certainly, the number of spray-hole also can be 4 or 8 or the like.In the 3rd embodiment, between first group of spray-hole and second group of spray-hole 1, step part is set.So the longitudinal length of spray-hole 3 is different with the longitudinal length of spray-hole 7, because form the wall thickness that the wall thickness of the part of spray-hole 3 is different from the part that forms spray-hole 7.Spray-hole 3 and 7 is arranged such that adjacent spray-hole 3 and 7 offsets and opens with predetermined space (30 degree) at circumferencial direction.Like this, can prevent that respectively the injection direction of the fuel flame C that penetrates from spray-hole 10C and 10D and D is stacked on top of each other.Each spray-hole 3 and 7 has identical diameter.Make the spray-hole 3 that forms from contiguous subsidiary combustion chamber top eject fuel flame C and have weak relatively transmission power, on the other hand, must eject fuel flame D from the spray-hole 7 that adjacent base forms and have strong relatively transmission power, and therefore, fuel flame D can reach the adjacent domain of the sidewall of main chamber 8.By forming step part 9 in the face of the wall surface of the subsidiary combustion chamber 6 of main chamber 8, inner surface that can subsidiary combustion chamber 6 walls is set to smooth surface.So fuel flame can spray from subsidiary combustion chamber effectively.
Because it is bigger than the concentration of natural gas of main chamber both sides in the concentration of natural gas at main chamber 8 tops, and because the combustion flame that subsidiary combustion chamber 6 top jet go out has weak relatively transmission power, and the combustion flame that the spray-hole 7 that forms in adjacent base ejects has strong relatively transmission power, therefore, can in main chamber, form burning uniformly, and the ignition temperature in the main chamber can be not too high yet.
In sum, providing under the prerequisite of smooth combustion, the technical solution of the utility model has further reduced the discharging of burning, has just further reduced the generation of nitrogen oxide, and has reduced cost effectively, helps being extensive use of.
Claims (6)
1. natural gas burner, it comprises housing (1), ignitor (2), first group of spray-hole (3), Gas Pipe (4), air duct (5), subsidiary combustion chamber (6), second group of spray-hole (7) and main chamber (8), wherein said ignitor and described Gas Pipe are separately fixed on the housing (1), natural gas is supplied with natural gas by Gas Pipe (4) to the combustion chamber, air duct provides the burning required air, natural gas and air mix the generation mist in the combustion chamber, described ignitor stretches in the described subsidiary combustion chamber, it is characterized in that, the combustion chamber is divided into subsidiary combustion chamber (6) and main chamber (8), comprises first group of spray-hole (3) and second group of spray-hole (4) on the wall of subsidiary combustion chamber (6).
2. natural gas nozzle as claimed in claim 1 is characterized in that, between described first group of spray-hole and described second group of spray-hole step part is set.
3. natural gas burner as claimed in claim 1 is characterized in that, the shell of described subsidiary combustion chamber and described main chamber all is a ceramic material.
4. natural gas nozzle as claimed in claim 1 is characterized in that the inner surface of described subsidiary combustion chamber is set to smooth surface.
5. natural gas burner as claimed in claim 1, it is characterized in that, described first group of spray-hole (3) comprises 2 spray-holes with the predetermined space equal spacings that align with longitudinal center's axis of subsidiary combustion chamber (6) along the center, and second group of spray-hole (7) comprises 6 spray-holes with the predetermined space equal spacings that align with longitudinal center's axis of subsidiary combustion chamber along the center.
6. natural gas nozzle as claimed in claim 5 is characterized in that, the number of first group of spray-hole also can be 4, and the number of second group of spray-hole can be 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202170923U CN201526971U (en) | 2009-09-28 | 2009-09-28 | Natural gas tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202170923U CN201526971U (en) | 2009-09-28 | 2009-09-28 | Natural gas tip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201526971U true CN201526971U (en) | 2010-07-14 |
Family
ID=42518257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202170923U Expired - Lifetime CN201526971U (en) | 2009-09-28 | 2009-09-28 | Natural gas tip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201526971U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537956A (en) * | 2010-12-20 | 2012-07-04 | 西安航天远征流体控制股份有限公司 | Double-gas burner |
| WO2013003995A1 (en) * | 2011-07-04 | 2013-01-10 | Air Liquide Advanced Technologies Usa, Llc | Self-igniting burner and method of use, and method of manufacture |
-
2009
- 2009-09-28 CN CN2009202170923U patent/CN201526971U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537956A (en) * | 2010-12-20 | 2012-07-04 | 西安航天远征流体控制股份有限公司 | Double-gas burner |
| WO2013003995A1 (en) * | 2011-07-04 | 2013-01-10 | Air Liquide Advanced Technologies Usa, Llc | Self-igniting burner and method of use, and method of manufacture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YEJIAN NEW MATERIAL CO., LTD. Free format text: FORMER OWNER: JIANGSU YEJIAN CORROSION PROTECTION MATERIAL CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110901 Address after: 213331, Gaoqiao Road, Town Industrial Zone, 9, Dai Town, Jiangsu, Liyang Co-patentee after: YEJIAN NEW MATERIAL CO., LTD. Patentee after: Jiangsu Yejian Zincum Industry Co., Ltd. Address before: 213331, Gaoqiao Road, Town Industrial Zone, 9, Dai Town, Jiangsu, Liyang Co-patentee before: Jiangsu Yejian Anti-corrosion Material Co., Ltd. Patentee before: Jiangsu Yejian Zincum Industry Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100714 |