CN201897223U - Burner for burning gas with low heat value - Google Patents
Burner for burning gas with low heat value Download PDFInfo
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- CN201897223U CN201897223U CN2010206530206U CN201020653020U CN201897223U CN 201897223 U CN201897223 U CN 201897223U CN 2010206530206 U CN2010206530206 U CN 2010206530206U CN 201020653020 U CN201020653020 U CN 201020653020U CN 201897223 U CN201897223 U CN 201897223U
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- bluff body
- gas
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- convergent
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Abstract
The utility model provides a burner for burning gas with low heat value, comprising an air pipe. A spraying nozzle of the air pipe is connected with a scaling flared port; a gas pipe is arranged in an air inlet pipe; and an ignition gas gun and a high-energy ignition gun are arranged in a central pipe of the gas pipe. The burner is characterized in that the scaling flared port is internally provided with a blunt body obstacle. In the burner, the scaling flared port is internally provided with a blunt body, the center of the scaling flared port is provided with a structure of an ignition device, and the convenient ignition and stable burning are achieved by changing the concentration field of the gas with low heat value. Due to adoption of a double-rotational-flow structure of gas and air, a double-rotational-flow planar flame is generated, and the purposes of intensifying burning and stabilizing the flame are further achieved by rotation of jet flow, so that the safe, economic and high-efficiency burning of the gas with low heat value is realized.
Description
Technical field
The utility model relates to a kind of lower heat of combustion burning of gas device, is used for the boiler of clean burn low-BTU gas, to adapt to the requirement of maximization high parameter lower heat of combustion gas boiler, belongs to the boiler-burner technical field.
Background technology
Burner is the important composition parts of boiler, and fuel and the needed air of burning all pass through burner and enter the burner hearth burning, add hot water and steam, and the conventional power plant boiler adopts coal dust to act as a fuel.Low-BTU gas is owing to its burning is stable poor, do not fit into the requirement of maximization high parameter boiler all the time, in the past with the way of mixing in the coal-powder boiler with the coal multifuel combustion, because the thermodynamic property of low-BTU gas and coal dust differs too big, mix burn a small amount of (with heat Calculation) low-BTU gas still can, surpass the operational factor and the safety economy that can have a strong impact on boiler after a certain amount of.And low-BTU gas is abundant at China's reserves as a kind of hydrogeneous fuel gas; common low-BTU gas has: coke-stove gas, coal gas of converter, blast furnace gas, water-gas, gas, landfill gas, biogas etc.; these low-BTU gas are again a kind of green, clear energy sources; be used, will produce the benefit of " killing three birds with one stone "---increase the regenerative resource supply, improve production safety, protect environment.
The burner structure of existing a kind of pure burning blast-furnace gas or low-heat value gas as shown in Figure 1, this burner comprises gas pipe 1, air hose 2, convergent-divergent enlarging 3, central tube 4, igniting air gun 5, high-energy firing gun 6, coal gas blade 9 and air blades 10, the spout of air hose 2 is connected with convergent-divergent enlarging 3, gas pipe 1 is installed in 2 li of air intlet pipes, with gas pipe 1 concentric shafts, igniting air gun 5 and high-energy firing gun 6 are installed in the central tube 4 of gas pipe 1, spout place at gas pipe 1 and air hose 2, coal gas blade 9 evenly is installed between gas pipe 1 and central tube 4, air blades 10 evenly is installed between gas pipe 1 and air hose 2.
During use, on the front-back wall of boiler furnace, arrange burner one to one, adopt front-back wall opposed firing technology.
Summary of the invention
The purpose of this utility model provides a kind of burner than the pure burning low-BTU gas of intense steady combusting ability of having that is used for station boiler.
In order to achieve the above object, the technical solution of the utility model has provided a kind of lower heat of combustion burning of gas device that is used for, comprise air hose, the spout of air hose is connected with the convergent-divergent enlarging, gas pipe is located in the air intlet pipe, igniting air gun and high-energy firing gun are located in the central tube of gas pipe, it is characterized in that: be provided with the bluff body barrier in the convergent-divergent enlarging.
Further, described bluff body barrier comprises V-arrangement wave bluff body, and V-arrangement wave bluff body is located at the central authorities of described convergent-divergent enlarging, is respectively equipped with the first bluff body location-plate and the second bluff body location-plate in the upper and lower side and the front and back end of V-arrangement wave bluff body.
Described V-arrangement wave bluff body adopts exotic material to make, and V-arrangement wave bluff body adopts free-standing to be connected with the first bluff body location-plate and the second bluff body location-plate, and the first bluff body location-plate and the second bluff body location-plate are fixedlyed connected with the convergent-divergent enlarging.
At least four of the described first bluff body location-plates, front and back are each one up and down, wherein two first bluff body location-plates are clipped in the middle V-arrangement wave bluff body and realize the location of short transverse V-arrangement wave bluff body, the location that the two first bluff body location-plates in front and back are realized horizontal fore-and-aft direction up and down; At least 2 of described second location-plates, front and back each one, be welded on the end at close the burner hearth place of convergent-divergent enlarging, V-arrangement wave bluff body is clamped horizontal fore-and-aft direction locatees.
Be provided with seal box outside described convergent-divergent enlarging, seal box links to each other with the water-cooling wall of outside.
Burner of the present utility model adopts in the convergent-divergent enlarging bluff body is set, the center is provided with the structure of igniter, bluff body is arranged in the convergent-divergent enlarging, form the bluff body barrier, bluff body can entrainment high-temperature flue gas, so that form bigger thermal flue gas back stream district, preheat for low heat value low-volatile gas, thereby help to light a fire and improve the low load stable combustion performance of gases such as low-heat value gas in the bluff body both sides.
The steady combustion effect of bluff body depends on the size of bluff body rear center recirculating zone and the size of capacity of returns to a great extent.Recirculating zone, increase center size can make the temperature of backflow flue gas raise, and increases capacity of returns and has then increased the thermal capacity of recirculating zone, and the two is very favourable with smooth combustion for strengthening catching fire of low-BTU gas.The non-streamline shape of V-arrangement wave bluff body, make exit flow because of stopped up by the bluff body wall air-spray muzzle velocity be increased, vortex intensity strengthens, and makes reflux area length increase, the ability of entrainmenting high-temperature flue gas strengthens, and is more favourable to catching fire of low heat value fuel gas and smooth combustion.
V-arrangement wave bluff body and bluff body location-plate adopt the connected mode of free-standing, have effectively absorbed the hot expansion of bluff body.
Being provided with of bluff body location-plate realized the location of bluff body in level and short transverse, bluff body clamped prevented that air-flow from going out bluff body in the burner hearth, so location-plate has also been realized the location of horizontal fore-and-aft direction.
Igniting air gun and high-energy firing gun effectively prevent long-term damage in hot environment having put the fire back from spout extraction 150-400mm.
Employing produces bispin plane of flow flame by the bispin flow structure of coal gas and air, by the rotation of jet, further reaches the purpose of the overheavy firing and the retention flame, realizes safety, economy and the efficient burning of low-BTU gas.
Burner of the present utility model adopts in the convergent-divergent enlarging bluff body is set, and the center is provided with the structure of igniter, reaches by change low-BTU gas concentration field and is convenient to catch fire and steady combustion.Employing produces bispin plane of flow flame by the bispin flow structure of coal gas and air, by the rotation of jet, further reaches the purpose of the overheavy firing and the retention flame, realizes safety, economy and the efficient burning of low-BTU gas.
Description of drawings
Fig. 1 is existing low-BTU gas burner structure schematic diagram;
Fig. 2 is a kind of low-BTU gas burner structure schematic diagram that bluff body is housed;
Fig. 3 is the facade installation site of bluff body in the convergent-divergent mouth.
The specific embodiment
Specify the utility model below in conjunction with embodiment.
Embodiment
As shown in Figure 2, be a kind of low-BTU gas burner structure schematic diagram that bluff body is housed.The V-arrangement wave bluff body 7, the first bluff body location-plate 8a and the second bluff body location-plate 8b that comprise gas pipe 1, air hose 2, convergent-divergent enlarging 3, central tube 4, igniting air gun 5, high-energy firing gun 6, convergent-divergent enlarging 3 central authorities.
The spout of air hose 2 is connected with convergent-divergent enlarging 3, gas pipe 1 is installed in 2 li of air intlet pipes, with gas pipe 1 concentric shafts, igniting air gun 5 and high-energy firing gun 6 are installed in the central tube 4 of gas pipe 1, spout place at gas pipe 1 and air hose 2, coal gas blade 9 evenly is installed between gas pipe 1 and central tube 4, air blades 10 evenly is installed between gas pipe 1 and air hose 2.Igniting air gun 5 and described high-energy firing gun 6 are being put the fire back from spout extraction 150-400mm.
V-arrangement wave bluff body 7 is installed in the central authorities of convergent-divergent enlarging 3, V-arrangement wave bluff body 7 adopts exotic material to make, at least four of the first bluff body location-plate 8a, front and back are each one up and down, wherein two first bluff body location-plate 8a are clipped in the middle V-arrangement wave bluff body 7 and realize the location of short transverse V-arrangement wave bluff body 7, the location that front and back two first bluff body location-plates 8a realizes horizontal fore-and-aft direction up and down; At least 2 of the second bluff body location-plate 8b, front and back each one, be welded on the end at close the burner hearth place of convergent-divergent enlarging 3, V-arrangement wave bluff body 7 is clamped horizontal fore-and-aft direction locatees.Be provided with seal box 12 outside convergent-divergent enlarging 3, whole burner links to each other with the water-cooling wall 11 of outside by seal box 12.
Entering spout after the adjusting of coal gas through coal gas blade 9 mixes with the air of process air blades 10, behind 6 gas guns 5 of high-energy firing gun, 5 coal gas of air gun, be not easy to light because low-BTU gas volatile contents such as coal gas are low, light the back flame instability, the utility model adds V-arrangement wave bluff body 7 at spout outlet coal gas and air Mixed Zone, its effect is exactly the convergent-divergent mouth 3 formation smoke backflows in the spout outlet, the flue gas that V-arrangement wave bluff body 7 refluxes up and down heats coal gas, thus can help coal gas fight and improved the combustion stability of gas burner.
As shown in Figure 3, V-arrangement wave bluff body 7 and convergent-divergent mouth 3 be for free-standing is connected, and mainly is in order to guarantee that the unimpeded and V-arrangement wave bluff body 7 of V-arrangement wave bluff body 7 hot expansions is convenient to dismounting.V-arrangement wave bluff body 7 is clamped the location of realizing short transverse and horizontal fore-and-aft direction by the first bluff body location-plate 8a at middle part, prevent that air-flow from going out bluff body in the burner hearth by the second bluff body location-plate 8b V-arrangement wave bluff body 7 being clamped, so this firm and hard location that shows the horizontal axis direction near the burner hearth place.
Claims (6)
1. one kind is used for lower heat of combustion burning of gas device, comprise air hose (2), the spout of air hose (2) is connected with convergent-divergent enlarging (3), gas pipe (1) is located in air intlet pipe (2), igniting air gun (5) and high-energy firing gun (6) are located in the central tube (4) of gas pipe (1), it is characterized in that: be provided with the bluff body barrier in convergent-divergent enlarging (3).
2. a kind of lower heat of combustion burning of gas device that is used for as claimed in claim 1, it is characterized in that: described bluff body barrier comprises V-arrangement wave bluff body (7), V-arrangement wave bluff body (7) is located at the central authorities of described convergent-divergent enlarging (3), is respectively equipped with the first bluff body location-plate (8a) and the second bluff body location-plate (8b) in the upper and lower side and the front and back end of V-arrangement wave bluff body (7).
3. a kind of lower heat of combustion burning of gas device that is used for as claimed in claim 2, it is characterized in that: described V-arrangement wave bluff body (7) adopts exotic material to make, V-arrangement wave bluff body (7) adopts free-standing to be connected with the first bluff body location-plate (8a) and the second bluff body location-plate (8b), and the first bluff body location-plate (8a) and the second bluff body location-plate (8b) are fixedlyed connected with convergent-divergent enlarging (3).
4. a kind of lower heat of combustion burning of gas device that is used for as claimed in claim 2, it is characterized in that: at least four of the described first bluff body location-plates (8a), front and back are each one up and down, wherein two first bluff body location-plates (8a) are clipped in the middle V-arrangement wave bluff body (7) and realize the location of short transverse V-arrangement wave bluff body (7) up and down, and the two first bluff body location-plates in front and back (8a) are realized the location of horizontal fore-and-aft direction; At least 2 of described second location-plates (8b), front and back each one, be welded on the end at close the burner hearth place of convergent-divergent enlarging (3), V-arrangement wave bluff body (7) is clamped horizontal fore-and-aft direction locatees.
5. a kind of lower heat of combustion burning of gas device that is used for as claimed in claim 1 is characterized in that: described igniting air gun (5) and described high-energy firing gun (6) are being put the fire back from spout extraction 150-400mm.
6. as each described a kind of lower heat of combustion burning of gas device that is used in the claim 1 to 5, it is characterized in that: be provided with seal box (12) outside described convergent-divergent enlarging (3), seal box (12) links to each other with the water-cooling wall (11) of outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206530206U CN201897223U (en) | 2010-12-10 | 2010-12-10 | Burner for burning gas with low heat value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206530206U CN201897223U (en) | 2010-12-10 | 2010-12-10 | Burner for burning gas with low heat value |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201897223U true CN201897223U (en) | 2011-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206530206U Expired - Lifetime CN201897223U (en) | 2010-12-10 | 2010-12-10 | Burner for burning gas with low heat value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201897223U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317512A (en) * | 2018-04-04 | 2018-07-24 | 哈尔滨工大金涛科技股份有限公司 | A kind of natural gas premix burner with oval shape tube pipe row's smooth combustion apparatus |
| CN108386836A (en) * | 2018-04-04 | 2018-08-10 | 哈尔滨工大金涛科技股份有限公司 | A kind of natural gas premix burner with elliptical tube pipe row's smooth combustion apparatus |
| CN108413394A (en) * | 2018-04-04 | 2018-08-17 | 哈尔滨工业大学 | A kind of natural gas premix burner with segmentation slit spout structure |
| CN108506934A (en) * | 2018-04-04 | 2018-09-07 | 哈尔滨工业大学 | A kind of natural gas premix burner with water cooling triangle tube bluff body pipe row |
| CN114985127A (en) * | 2022-07-15 | 2022-09-02 | 中国空气动力研究与发展中心低速空气动力研究所 | Method for changing jet flow shape |
-
2010
- 2010-12-10 CN CN2010206530206U patent/CN201897223U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317512A (en) * | 2018-04-04 | 2018-07-24 | 哈尔滨工大金涛科技股份有限公司 | A kind of natural gas premix burner with oval shape tube pipe row's smooth combustion apparatus |
| CN108386836A (en) * | 2018-04-04 | 2018-08-10 | 哈尔滨工大金涛科技股份有限公司 | A kind of natural gas premix burner with elliptical tube pipe row's smooth combustion apparatus |
| CN108413394A (en) * | 2018-04-04 | 2018-08-17 | 哈尔滨工业大学 | A kind of natural gas premix burner with segmentation slit spout structure |
| CN108506934A (en) * | 2018-04-04 | 2018-09-07 | 哈尔滨工业大学 | A kind of natural gas premix burner with water cooling triangle tube bluff body pipe row |
| CN114985127A (en) * | 2022-07-15 | 2022-09-02 | 中国空气动力研究与发展中心低速空气动力研究所 | Method for changing jet flow shape |
| CN114985127B (en) * | 2022-07-15 | 2022-11-01 | 中国空气动力研究与发展中心低速空气动力研究所 | Method for changing jet flow shape |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110713 |