CN206113001U - Combustion chamber low -nitrogen combustion device - Google Patents
Combustion chamber low -nitrogen combustion device Download PDFInfo
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- CN206113001U CN206113001U CN201621084199.1U CN201621084199U CN206113001U CN 206113001 U CN206113001 U CN 206113001U CN 201621084199 U CN201621084199 U CN 201621084199U CN 206113001 U CN206113001 U CN 206113001U
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- branch road
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Abstract
The utility model discloses a combustion chamber low -nitrogen combustion device, first branch road, second swirler and the combustion chamber of letting in including the first mixer of tube coupling in proper order, first swirler, second blender, first mixer's entry end has two and lets in the branch road, and first lets in the branch road and lets in the air, and the second lets in the branch road and lets in the natural gas, the second of second blender lets in the branch road and lets in vapor. Among the exhaust -heat boiler method of high parameter steam through decompression, dominant discharge with its get into mix fuel injector in advance before with the natural gas and air homogeneous mixing, it at combustion space, prevents the too high condition of local flue -gas temperature to guarantee to mix in advance the enough evenly distributed of gas combustion processes normal water power steam in the combustion chamber, can also adjust the mass flow who sneaks into the steam in advance according to combined cycle unit actual operation working condition's the condition, reach the best low -nitrogen combustion effect.
Description
Technical field
This utility model is related to gas turbine, more particularly to a kind of gas-turbine combustion chamber low nitrogen combustion apparatus.
Background technology
With the development of modern science and technology, gas turbine-steam turbine combined cycle generating unit is towards high parameter, height
Generated output direction is developed, this cause as the indoor combustion reaction of the burning of gas turbine core component become more acutely,
It is more complicated.The dry type combustion with reduced pollutants technology that domestic in-service more advanced heavy duty gas turbine unit is adopted is facing unit
When aging, variable parameter operation, flue gas oxynitride discharge often beyond design standard, while with national environmental protection political affairs
The lasting increasing of plan dynamics, to the discharge standard of the oxynitride of gas turbine-steam turbine circulating power station also year by year
Improve so that gas-turbine combustion chamber low-NO_x combustion technology seems more important.
Existing gas turbine steam-recycling technology is applied substantially on synthesis gas, Natural Gas turbine unit, mainly
To combustor injection water or water vapour under underload diffusion combustion mode, combustion chamber space water is result in from principle
Distribution of steam uniformity is not high, easily causes temperature distributing disproportionation, and flame tube wall fever sensation of the face stress is excessive, so as to affect its work longevity
Life, while can also have a certain impact to the off design performance of Combined Cycle Unit.
The content of the invention
In order to solve the problems, such as that directly combustor injection water or water vapour are brought, for premix burner, this practicality
It is new there is provided a kind of gas-turbine combustion chamber low nitrogen combustion apparatus, burning indoor temperature distribution can be made more uniform and can
Oxynitride generation is greatly lowered.
This utility model is achieved through the following technical solutions：
A kind of gas-turbine combustion chamber low nitrogen combustion apparatus, the first blender 6, the first eddy flow including the connection of pipeline successively
Device 7, the first of the second blender 8 are passed through branch road, the second cyclone 9 and combustor 10；
The arrival end of first blender 6 is passed through branch road with two, and first is passed through branch road and is passed through air, second
It is passed through branch road and is passed through natural gas；The second of second blender 8 is passed through branch road and is passed through water vapour.
First of first blender 6 is passed through branch road includes compressor 4, and air is sent into first by compressor 4
In blender 6；Second of first blender 6 is passed through branch road includes choke valve 1, and natural gas is sent into after choke valve 1
In first blender 6.
The second of second blender 8 is passed through branch road includes the waste heat boiler 2 of pipeline connection, air relief valve 3 and stream successively
Amount valve 5；The water vapour that waste heat boiler 2 is produced sequentially passes through air relief valve 3 and flow valve 5 is sent in the second blender 8；
Air and natural gas after mixing in the first blender 6 by the first cyclone 7 after, into the second blender 8,
Mix with water vapour in second blender 8 again, form the premixed gas of the fuel, air and water vapour of mix homogeneously, then
Fuel nozzle is premixed in being passed into combustor 10 and participates in combustion reaction, final combustion product participates in expansion in being discharged to turbine and does
Work(.
A kind of gas-turbine combustion chamber low nitrogen burning method, which comprises the steps：
Pressure is reduced after choke valve 1 from (high pressure) natural gas of gas distributing system, and (pressure is down to suitable pressure
Power), ambient air pressure rise after the insulated compression of compressor 4, then pressure-air and natural gas are mixed first
Mix (according to certain mass flow proportional) in clutch 6, then mixed uniformly mixed gas are formed by the first cyclone 7；Water
From waste heat boiler 2, water vapour is reduced the second blender 8 is passed into after pressure by air relief valve 3 and is mixed steam, then by
Two cyclone 9 forms the premixed gas of the natural gas, air and water vapour of mix homogeneously, premixes in being then passed into combustor 10
Fuel nozzle participates in combustion reaction, and final combustion product participates in expansion work in being discharged to turbine.
The mixed proportion of the pressure-air and natural gas in the first blender 6, by the aperture for adjusting choke valve 1
Realize.
This utility model is had the following advantages and effect relative to prior art：
Water vapour of the present utility model comes from the high temperature and high pressure steam of waste heat boiler in combined cycle system, with senior staff officer
The characteristics of number, high-energy, the characteristics of with energy recycling.
The mixing of this utility model compressed air and natural gas and finally pass through cyclone reality with the mixing of water vapour
It is existing, and all uniform mixing is completed before entering into the combustion chamber, be so conducive to saving combustion chamber space.
The mixed gas of this utility model combustor are passed through premixed combustion nozzle, and water vapour is uniform-distribution with combustion reaction
Links, finally realize low nitrogen burning.
This utility model carries out water vapour premix, Ke Yishi by the fuel to premix burner in gas-turbine combustion chamber
Water vapour and uniformity of temperature profile in existing combustion barrel, can be greatly reduced the generation of oxynitride.
Description of the drawings
Structural representations of the Fig. 1 for this utility model gas-turbine combustion chamber low nitrogen combustion apparatus.
Specific embodiment
This utility model is more specifically described in detail with reference to specific embodiment.
Embodiment
As shown in Figure 1.The utility model discloses a kind of gas-turbine combustion chamber low nitrogen combustion apparatus, including pipeline successively
First blender 6 of connection, the first cyclone 7, the first of the second blender 8 it is passed through branch road, the second cyclone 9 and combustor
10；
The arrival end of first blender 6 is passed through branch road with two, and first is passed through branch road and is passed through air, second
It is passed through branch road and is passed through natural gas；The second of second blender 8 is passed through branch road and is passed through water vapour.
First of first blender 6 is passed through branch road includes compressor 4, and air is sent into first by compressor 4
In blender 6；Second of first blender 6 is passed through branch road includes choke valve 1, and natural gas is sent into after choke valve 1
In first blender 6.
The second of second blender 8 is passed through branch road includes the waste heat boiler 2 of pipeline connection, air relief valve 3 and stream successively
Amount valve 5；The water vapour that waste heat boiler 2 is produced sequentially passes through air relief valve 3 and flow valve 5 is sent in the second blender 8；
Air and natural gas after mixing in the first blender 6 by the first cyclone 7 after, into the second blender 8,
Mix with water vapour in second blender 8 again, form the premixed gas of the natural gas, air and water vapour of mix homogeneously, so
After be passed in combustor 10 and premix fuel nozzle and participate in combustion reaction, final combustion product participates in expansion in being discharged to turbine and does
Work(.
Water vapour in waste heat boiler 2 is after the decompression of air relief valve 3 and flow valve 5 control flow so as to entering premix
Uniformly mix in the second blender 8 with natural gas and air before fuel nozzle, make premixed gas burned in combustor 10
In journey, water vapour can be uniformly distributed in combustion space.Prevent the too high situation of local flue-gas temperature；Can be with according to connection
The situation of Cycle Unit actual operating mode is closed, regulation is premixed into the mass flow of water vapour, reach optimal low nitrogen burning effect
Really.
This utility model gas-turbine combustion chamber low nitrogen burning method, can be achieved by the steps of：
Pressure is reduced after choke valve 1 from (high pressure) natural gas of gas distributing system, ambient air is through pressure
Pressure rise after the insulated compression of mechanism of qi 4, then pressure-air and natural gas (are pressed according to practical situation in the first blender 6
According to certain mass flow proportional) mixing, then mixed uniformly mixed gas are formed by the first cyclone 7；Water vapour is from remaining
Heat boiler 2, water vapour are reduced the second blender 8 is passed into after pressure by air relief valve 3 and are mixed, then by the second cyclone 9
The premixed gas of the natural gas, air and water vapour of mix homogeneously is formed, in being then passed into combustor 10, fuel nozzle is premixed
Combustion reaction is participated in, final combustion product participates in expansion work in being discharged to turbine.
The mixed proportion of the pressure-air and natural gas in the first blender 6, by the aperture reality for adjusting choke valve 1
It is existing, until making best results.
After the premixed gas of natural gas, air and water vapour after mixing uniformly enters premixing nozzle, water vapour can
The whole process of gas combustion is evenly distributed in, is not in that local temperature is too high and cause thermal NOXIt is a large amount of to generate, together
When water vapour presence to Quick-type NOXGeneration also have certain inhibitory action.In actual motion, can be transported according to unit
Row operating mode situation, adjusts steam flow by flow valve 5 so that reach, simple to operation.
As described above, just can preferably realize this utility model.
Embodiment of the present utility model is simultaneously not restricted to the described embodiments, and other are any without departing from of the present utility model
Spirit and the change, modification, replacement made under principle, combine, simplify, should be equivalent substitute mode, be included in
Within protection domain of the present utility model.
Claims (4)
1. a kind of gas-turbine combustion chamber low nitrogen combustion apparatus, it is characterised in that：Including the first blender of the connection of pipeline successively
(6), the first cyclone (7), the first of the second blender (8) are passed through branch road, the second cyclone (9) and combustor (10)；
The arrival end of first blender (6) is passed through branch road with two, and first is passed through branch road and is passed through air, and second leads to
Enter branch road and be passed through natural gas；The second of second blender (8) is passed through branch road and is passed through water vapour.
2. gas-turbine combustion chamber low nitrogen combustion apparatus according to claim 1, it is characterised in that：First blender
(6) first is passed through branch road includes compressor (4), air is sent in the first blender (6) by compressor (4)；It is described
Second of first blender (6) is passed through branch road includes choke valve (1), and natural gas sends into the first mixing after choke valve (1)
In device (6).
3. gas-turbine combustion chamber low nitrogen combustion apparatus according to claim 2, it is characterised in that：Second blender
(8) second is passed through branch road includes the waste heat boiler (2) of pipeline connection, air relief valve (3) and flow valve (5) successively；Waste heat boiler
(2) water vapour for producing sequentially passes through air relief valve (3) and flow valve (5) is sent in the second blender (8)；
After air and natural gas pass through the first cyclone (7) after mixing in the first blender (6), into the second blender (8),
Mix with water vapour in the second blender (8) again, form the premix gas of the natural gas, air and water vapour of mix homogeneously
Body, in being then passed into combustor (10), premix fuel nozzle participates in combustion reaction, and final combustion product is joined in being discharged to turbine
With expansion work.
4. gas-turbine combustion chamber low nitrogen combustion apparatus according to claim 2, it is characterised in that：In waste heat boiler (2)
Water vapour by air relief valve (3) decompression and flow valve (5) control flow after so as to enter premix fuel nozzle before with it is natural
Gas and air uniformly mix in the second blender (8), enable premixed gas water vapour in combustor (10) combustion process
It is evenly distributed on combustion space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621084199.1U CN206113001U (en) | 2016-09-27 | 2016-09-27 | Combustion chamber low -nitrogen combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621084199.1U CN206113001U (en) | 2016-09-27 | 2016-09-27 | Combustion chamber low -nitrogen combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206113001U true CN206113001U (en) | 2017-04-19 |
Family
ID=58521845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621084199.1U Active CN206113001U (en) | 2016-09-27 | 2016-09-27 | Combustion chamber low -nitrogen combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206113001U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439915A (en) * | 2016-09-27 | 2017-02-22 | 华南理工大学 | Gas turbine combustion chamber low-nitrogen combustion device and combustion method thereof |
| CN110925793A (en) * | 2019-12-27 | 2020-03-27 | 广州智光节能有限公司 | Fuel calorific value control device and control method of multi-gas-source gas turbine |
-
2016
- 2016-09-27 CN CN201621084199.1U patent/CN206113001U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439915A (en) * | 2016-09-27 | 2017-02-22 | 华南理工大学 | Gas turbine combustion chamber low-nitrogen combustion device and combustion method thereof |
| CN106439915B (en) * | 2016-09-27 | 2019-04-09 | 华南理工大学 | A kind of gas-turbine combustion chamber low nitrogen combustion apparatus and its combustion method |
| CN110925793A (en) * | 2019-12-27 | 2020-03-27 | 广州智光节能有限公司 | Fuel calorific value control device and control method of multi-gas-source gas turbine |
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