CN204084459U - A kind of water conservancy diversion lining of gas-turbine combustion chamber - Google Patents
A kind of water conservancy diversion lining of gas-turbine combustion chamber Download PDFInfo
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- CN204084459U CN204084459U CN201420542911.2U CN201420542911U CN204084459U CN 204084459 U CN204084459 U CN 204084459U CN 201420542911 U CN201420542911 U CN 201420542911U CN 204084459 U CN204084459 U CN 204084459U
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- water conservancy
- conservancy diversion
- diversion lining
- flow deflector
- gas
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Abstract
A water conservancy diversion lining for gas-turbine combustion chamber, relates to the structural design of gas-turbine combustion chamber.Technical characterstic of the present utility model arranges flow deflector vertically in water conservancy diversion lining cylinder inboard wall face; According to air-flow direction in water conservancy diversion lining, described flow deflector is positioned at the upstream extremity of burner inner liner blending hole in the original position of water conservancy diversion lining internal face, and the final position of flow deflector is between locating piece upstream and cooling effectiveness downstream of primary jet; The radial spacing h of flow deflector and burner inner liner outer surface is 1 ~ 10mm.The water conservancy diversion lining of described gas-turbine combustion chamber not only can limit the circumferential flow of air-flow in water conservancy diversion lining, realizes the Uniform Flow of water conservancy diversion bush inside air-flow, and then makes burner inner liner internal-combustion more stable; On the other hand, because the utility model is provided with multiple flow deflector at the internal face of water conservancy diversion lining, greatly strengthen the mechanical strength of water conservancy diversion lining, thus make water conservancy diversion lining in the gas turbine course of work, further increase security and the service life of operation.
Description
Technical field
The utility model relates to a kind of air fairing, particularly relates to the water conservancy diversion lining having flow deflector in a kind of gas-turbine combustion chamber.
Background technology
Gas turbine is the visual plant of world today's clean utilization fossil energy.Two important indicators affecting gas turbine performance are combustor exit temperature distribution and row's emissions respectively, and these two indexs all with the fuel of combustion chamber and the distribution of air and combustion case closely related.If the fuel of combustion chamber and air-distribution uneven time, will certainly cause local fuel-rich regions and local poor fuel district; The ignition temperature of fuel-rich regions is often very high, can bring focus to Exit temperature distribution, and the generation of thermal NO x can be caused to increase; The ignition temperature in poor fuel district is often not high, can bring cold spot to Exit temperature distribution, and it is complete that the CO in fuel can be caused to be difficult to fuel.Therefore the uniformity of combustion chamber fuel and air-distribution is most important.
Gas turbine many employings countercurrent ring tubular type chamber structure of main flow in the market, compressor air, after diffuser, enters combustion cylinder pressure, and after through water conservancy diversion lining import reverse flow to head of combustion chamber.Fig. 1 is a typical counter flow combustion cell structure, combustion cylinder pressure air is from the reverse flow of water conservancy diversion bushing inlet to head of combustion chamber, then enter burner inner liner inside from structures such as blending hole, primary holes, head airports, and carry out blending, burning with the fuel that nozzle sprays, finally discharge from burner inner liner outlet.The normally simple cylindrical structure of this water conservancy diversion lining, only serve the effect of gas flow channel, to the circumferential flow not structural constraint of gas in passage, gas likely situation pockety in the circumferential will be brought like this, thus cause the inhomogeneities of the air mass flow entering burner inner liner inside from Different Pore Structures, and then cause burner inner liner internally fired uneven, finally can have influence on combustor exit temperature distribution and pollutant emission.
In addition on the one hand, the structure of current water conservancy diversion lining is one section or several sections of thin-wall tubular structures substantially, in real work, also very easily occurs the situation of structural strength deficiency.
Utility model content
In order to overcome above-mentioned shortcomings and deficiencies of the prior art, the utility model proposes the water conservancy diversion lining of gas-turbine combustion chamber, this device not only can limit the circumferential flow of air-flow in water conservancy diversion lining, realizes the Uniform Flow of water conservancy diversion bush inside air-flow, and structure is simple, structural strength is good.
The technical scheme that the utility model adopts is:
A water conservancy diversion lining for gas-turbine combustion chamber, this water conservancy diversion lining is arranged on the outside of burner inner liner, and is connected with burner inner liner by being arranged on burner inner liner head location block; Burner inner liner outside wall surface is circumferentially provided with many row's blending hole and primary holes, it is characterized in that: arrange flow deflector vertically in water conservancy diversion lining cylinder inboard wall face, described flow deflector number is N times that often arranges primary holes number, and N is positive number, and 1≤N≤5; According to air-flow direction in water conservancy diversion lining, described flow deflector is positioned at the upstream extremity of burner inner liner blending hole in the original position of water conservancy diversion lining internal face, and the final position of flow deflector is between locating piece upstream and cooling effectiveness downstream of primary jet; The radial spacing h of described flow deflector and burner inner liner outer surface is 1 ~ 10mm.
Flow deflector described in the utility model is straight thin-slab structure, and thickness is 0.1mm ~ 4mm.Preferred thickness 1mm ~ 3mm.
Technical characteristic of the present utility model is also: described flow deflector is uniformly distributed at water conservancy diversion lining internal face; The number of flow deflector is preferably 1,2 or 3 times that often arranges primary holes number.
The utility model has the following advantages relative to prior art and the technique effect of high-lighting: the water conservancy diversion lining of the gas-turbine combustion chamber that the utility model provides not only can limit the circumferential flow of air-flow in water conservancy diversion lining, realize the Uniform Flow of water conservancy diversion bush inside air-flow, and then make burner inner liner internal-combustion more stable; In addition, because the utility model is provided with multiple flow deflector at the internal face of water conservancy diversion lining, greatly strengthen the mechanical strength of water conservancy diversion lining, thus make water conservancy diversion lining in the gas turbine course of work, further increase security and the service life of operation.
Accompanying drawing explanation
Fig. 1 is the combustion chamber schematic diagram comprising water conservancy diversion bush structure of the prior art.
Fig. 2 is that the D of Fig. 1 is to sectional view.
Fig. 3 is the structural representation of the gas-turbine combustion chamber adopting water conservancy diversion lining of the present utility model.
Fig. 4 is that the D of Fig. 3 is to sectional view.
Fig. 5 is the three-dimensional cutaway view of Fig. 3.
Description of reference numerals is as follows: 1-water conservancy diversion lining; 2-burner inner liner; 3-end cap; 4-locating piece; 5-nozzle; 6-incoming air; 7-sector channel; 8-fuel gas; 11-flow deflector; 21-primary holes; 22-blending hole; 23-head airport.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, structure of the present utility model, principle and detailed description of the invention are described further.
As shown in Fig. 3, Figure 4 and 5, described water conservancy diversion lining 1 is arranged on the outside of burner inner liner 2, and is connected with burner inner liner by the locating piece 4 being arranged on burner inner liner head, and water conservancy diversion lining is connected with end cap 3 in front end, burner inner liner outside wall surface is circumferentially provided with many row's blending hole 22 and primary holes 21, described water conservancy diversion lining cylindrical shell is formed by connecting by one or more snippets cylinder, arrange flow deflector 11 vertically in water conservancy diversion lining cylinder inboard wall face, this flow deflector 11 is fixedly connected with water conservancy diversion lining internal face, adopts welding or integration casting, the number of flow deflector is N times that often arranges primary holes number, and N is positive number, and 1≤N≤5, the number of flow deflector is preferably and often arranges primary holes number is 1,2 or 3 times, according to air-flow direction in water conservancy diversion lining 1, described flow deflector 11 is no more than burner inner liner blending hole 22 axial location corresponding with water conservancy diversion lining 1 in water conservancy diversion lining 1 internal face original position, the final position of flow deflector 11 is no more than locating piece 4 axial location corresponding with water conservancy diversion lining 1, namely described flow deflector is positioned at the upstream extremity of burner inner liner blending hole 22 in the original position of water conservancy diversion lining internal face, the final position of flow deflector 11 is between locating piece 4 upstream and primary holes 21 downstream, flow deflector 11 is not interfered with locating piece 4, and flow deflector can not drop on primary holes 21 or blending hole 22 region in the projection of radial direction.
The radial spacing h of described flow deflector and burner inner liner outer surface is 1 ~ 10mm; Described flow deflector 11 is preferably uniformly distributed at water conservancy diversion lining internal face.
In the utility model, described flow deflector 11 adopts straight thin-slab structure, and its thickness is 0.1 ~ 4mm, and preferred lamella thickness is 1mm ~ 3mm.
Working mechanism of the present utility model and the course of work as follows:
See Fig. 3, Fig. 4 and Fig. 5, the circular passage between water conservancy diversion lining 1 and burner inner liner 2 is divided into flow deflector 11 the same number of sector channel 7 by flow deflector 11.Incoming air 6 flows in the circular passage in water conservancy diversion lining cylinder and between burner inner liner 2, and reverse flow is to head of combustion chamber, and then incoming air 6 is subject to the restriction of flow deflector 11 in circumference, is split in the reverse inflow sector channel 7 of multiply air-flow.In flow process, gas in sector channel 7 by when blending hole 22 and primary holes 21 shunt portion gas enter in burner inner liner 2, last air-flow enters burner inner liner by the head airport 23 of burner inner liner head, carries out mixing mixing combustion with the fuel gas 8 being entered burner inner liner head by nozzle 5.Due to the flow deflector 11 pairs of restrictions of air-flow in circumferential flow, air-flow in different sector channel 7 is difficult to flow between different sector channel 7, thus ensure that the uniformity entering burner inner liner inner air from different primary holes 21 and blending hole 22, and then ensure that the internally fired uniformity of burner inner liner.
In addition, because the utility model is provided with multiple flow deflector at the internal face of water conservancy diversion lining, greatly strengthen the mechanical strength of water conservancy diversion lining, thus make water conservancy diversion lining in the gas turbine course of work, further increase security and the service life of operation.
Claims (5)
1. a water conservancy diversion lining for gas-turbine combustion chamber, this water conservancy diversion lining is arranged on the outside of burner inner liner (2), and is connected with burner inner liner by being arranged on burner inner liner head location block (4); Burner inner liner outside wall surface is circumferentially provided with and arranges blending hole (22) and primary holes (21) more, it is characterized in that: in water conservancy diversion lining cylinder inboard wall face, flow deflector (11) is set vertically, described flow deflector number is N times that often arranges primary holes number, N is positive number, and 1≤N≤5; According to air-flow direction in water conservancy diversion lining, described flow deflector is positioned at the upstream extremity of burner inner liner blending hole (22) in the original position of water conservancy diversion lining internal face, and the final position of flow deflector (11) is positioned between locating piece (4) upstream and primary holes (21) downstream; The radial spacing h of described flow deflector and burner inner liner outer surface is 1 ~ 10mm.
2. the water conservancy diversion lining of gas-turbine combustion chamber according to claim 1, is characterized in that: described flow deflector is straight thin-slab structure, and thickness is 0.1 ~ 4mm.
3. the water conservancy diversion lining of gas-turbine combustion chamber according to claim 2, is characterized in that: the thickness 1 ~ 3mm of described flow deflector.
4. according to the water conservancy diversion lining of a kind of gas-turbine combustion chamber described in claim 1,2 or 3, it is characterized in that: the number of described flow deflector is 1,2 or 3 times that often arranges primary holes number.
5. according to the water conservancy diversion lining of a kind of gas-turbine combustion chamber according to claim 4, it is characterized in that: described flow deflector is uniformly distributed at water conservancy diversion lining internal face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420542911.2U CN204084459U (en) | 2014-09-19 | 2014-09-19 | A kind of water conservancy diversion lining of gas-turbine combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420542911.2U CN204084459U (en) | 2014-09-19 | 2014-09-19 | A kind of water conservancy diversion lining of gas-turbine combustion chamber |
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| Publication Number | Publication Date |
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| CN204084459U true CN204084459U (en) | 2015-01-07 |
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| CN201420542911.2U Active CN204084459U (en) | 2014-09-19 | 2014-09-19 | A kind of water conservancy diversion lining of gas-turbine combustion chamber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359124A (en) * | 2014-09-19 | 2015-02-18 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Flow guide bush of combustion chamber of gas turbine |
-
2014
- 2014-09-19 CN CN201420542911.2U patent/CN204084459U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359124A (en) * | 2014-09-19 | 2015-02-18 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Flow guide bush of combustion chamber of gas turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Flow guide bush of combustion chamber of gas turbine Effective date of registration: 20161104 Granted publication date: 20150107 Pledgee: Tsinghua Holdings Co., Ltd. Pledgor: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. Registration number: 2016990000853 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20191211 Granted publication date: 20150107 Pledgee: Tsinghua Holdings Co., Ltd. Pledgor: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. Registration number: 2016990000853 |