CN205823450U - The gas deflation assembly of small size gas turbine - Google Patents
The gas deflation assembly of small size gas turbine Download PDFInfo
- Publication number
- CN205823450U CN205823450U CN201620586652.2U CN201620586652U CN205823450U CN 205823450 U CN205823450 U CN 205823450U CN 201620586652 U CN201620586652 U CN 201620586652U CN 205823450 U CN205823450 U CN 205823450U
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- CN
- China
- Prior art keywords
- aerofluxus
- expansion pipe
- gas
- axial diversion
- diversion post
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses the gas deflation assembly of a kind of small size gas turbine, including aerofluxus expansion pipe and axial diversion post, axial diversion post is positioned at the inner chamber of aerofluxus expansion pipe, and axial diversion post is axially extending along aerofluxus expansion pipe.The body of aerofluxus of the present utility model expansion pipe is seamlessly transitted into round table surface by the face of cylinder, it is possible to produce one section of runner almost identical with turbine outlet together with axial diversion post, so that the flowing in exhaustor is more smooth and stable；Further, it is the most excessive from turbine outlet to the runner of air exit gas, it is possible to avoid producing gas swirl.
Description
Technical field
This utility model relates to the parts of a kind of small size gas turbine, is specifically related to the aerofluxus of a kind of small size gas turbine
Assembly.
Background technology
Small size gas turbine refers to the gas turbine that power is below 10MW.The gas deflation assembly of gas turbine is gas turbine
One of important composition, its major function is to maintain pressure at expulsion so that it is guaranteed that combustion engine efficiency, seal combustion gas and guide aerofluxus
Trend.Its operation principle is: high-temperature fuel gas flows into exhaustor from turbine outlet, and slowing down in exhaustor expands, thus improves
Combustion gas exhaust outlet static pressure with maintain gas turbine internal pressure.The pressure of exhaust outlet can be directly used for calculating
The work efficiency of gas turbine.The performance of exhaustor directly affects the overall efficiency of gas turbine and output.
Existing gas deflation assembly is the aerofluxus expansion pipe of truncated cone-shaped, it has not been convenient to the turbine that runner band afterbody is cylinder
It is connected.It addition, the conducting element in aerofluxus expansion pipe is generally the shortest circular platform type deflection cone, or length is managed with aerofluxus expansion
The axial cylindrical water conservancy diversion axle that length is identical.Due to from turbine outlet effluent air speed the most quickly, if deflection cone is too short, then
Flowing whirlpool can be produced at gas suddenly expansion, thus cause flow losses, and then affect the efficiency of combustion engine；And if water conservancy diversion
Axle extends to the outlet section of aerofluxus expansion pipe always, then the flow area of gas is the least, is unfavorable for gas deceleration diffusion.
Utility model content
Technical problem to be solved in the utility model is to provide the gas deflation assembly of a kind of small size gas turbine, and it can be square
Just it is connected with runner band, and improves the whole efficiency of combustion engine.
For solving above-mentioned technical problem, the technical solution of the gas deflation assembly of this utility model small size gas turbine is:
Including aerofluxus expansion pipe 1 and axial diversion post 2, axial diversion post 2 is positioned at the inner chamber of aerofluxus expansion pipe 1, axially leads
Fluidization tower 2 is axially extending along aerofluxus expansion pipe 1；Aerofluxus expansion pipe 1 includes runner band linkage section 1-1 and expansion segment 1-2, turbine
Wheel rim linkage section 1-1 is isodiametric cylinder, and expansion segment 1-2 is truncated cone-shaped, runner band linkage section 1-1 and expansion segment 1-2
Between be connected smoothly；The diameter of runner band linkage section 1-1 matches with the tail diameter of runner band 3；Axial diversion
Post 2 is isodiametric cylinder, and the diameter of axial diversion post 2 matches with the tail diameter of turbine hub 4.
Between 1/2～1 of the length of a length of aerofluxus expansion pipe 1 of described axial diversion post 2.
Described aerofluxus expansion pipe 1 is connected with the afterbody of runner band 3 by runner band linkage section 1-1.
Described axial diversion post 2 is connected with the afterbody of turbine hub 4.
The 3/4 of the length of a length of aerofluxus expansion pipe 1 of described axial diversion post 2.
What this utility model can reach has the technical effect that
This utility model be positioned at aerofluxus expansion pipe initiating terminal runner band linkage section can easy to exhaust expansion pipe with
Runner band afterbody overlaps.
The body of aerofluxus of the present utility model expansion pipe is seamlessly transitted into round table surface by the face of cylinder, it is possible to axial diversion post
Produce one section of runner almost identical with turbine outlet together, so that the flowing in exhaustor is more smooth and stable；Further,
Runner from turbine outlet to air exit gas is the most excessive, it is possible to avoid producing gas swirl.
Diversion column of the present utility model can make the flowing of gas in exhaustor more smooth and rationally so that in exhaustor
Gas can slow down more completely diffusion, therefore can improve combustion engine efficiency.
Diversion column is not had, it is possible to increase the flow area of gas, make gas at rear the 1/4 of this utility model aerofluxus expansion pipe
Slow down and boost, improve the efficiency that turbine is overall.
Pressure field distribution of the present utility model is more uniform, goes out with not having water conservancy diversion axle and water conservancy diversion axle to extend to exhaustor completely
The structure of mouth is compared, and the exhaustor CFD computational efficiency of this structure is also the highest, higher by about 0.1% than other two kinds of structures.
Accompanying drawing explanation
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings:
Fig. 1 is the schematic diagram of the gas deflation assembly of this utility model small size gas turbine.
Description of reference numerals in figure:
1 is aerofluxus expansion pipe, and 2 is axial diversion post,
3 is runner band, and 4 is turbine hub,
1-1 is runner band linkage section, and 1-2 is expansion segment.
Detailed description of the invention
As it is shown in figure 1, the gas deflation assembly of this utility model small size gas turbine, including aerofluxus expansion pipe 1 and axial diversion
Post 2, axial diversion post 2 is positioned at the inner chamber of aerofluxus expansion pipe 1, and axial diversion post 2 is axially extending along aerofluxus expansion pipe 1；Aerofluxus
Expansion pipe 1 is used for connecting runner band 3, and axial diversion post 2 is used for connecting turbine hub 4；
Aerofluxus expansion pipe 1 includes that runner band linkage section 1-1 and expansion segment 1-2, runner band linkage section 1-1 are equal diameter
Cylinder, expansion segment 1-2 is truncated cone-shaped, flat between the face of cylinder and the round table surface of expansion segment 1-2 of runner band linkage section 1-1
Slip over and cross connection；
The diameter of runner band linkage section 1-1 matches with the tail diameter of runner band 3；Aerofluxus expansion pipe 1 passes through whirlpool
Wheel rim linkage section 1-1 is connected with the afterbody of runner band 3；
Axial diversion post 2 is isodiametric cylinder, the tail diameter phase of the diameter of axial diversion post 2 and turbine hub 4
It coincide；Length (i.e. runner band linkage section 1-1 and the length of expansion segment 1-2 of a length of aerofluxus expansion pipe 1 of axial diversion post 2
Degree sum) 1/2～1 between, preferably 3/4.
Claims (5)
1. the gas deflation assembly of a small size gas turbine, it is characterised in that: include aerofluxus expansion pipe (1) and axial diversion post (2),
Axial diversion post (2) is positioned at the inner chamber of aerofluxus expansion pipe (1), and axial diversion post (2) is axially extending along aerofluxus expansion pipe (1)；
Aerofluxus expansion pipe (1) includes runner band linkage section (1-1) and expansion segment (1-2), and runner band linkage section (1-1) is
The cylinder of diameter, expansion segment (1-2) is truncated cone-shaped, seamlessly transits between runner band linkage section (1-1) and expansion segment (1-2)
Connect；The diameter of runner band linkage section (1-1) matches with the tail diameter of runner band (3)；
Axial diversion post (2) is isodiametric cylinder, the diameter of axial diversion post (2) and the tail diameter of turbine hub (4)
Match.
The gas deflation assembly of small size gas turbine the most according to claim 1, it is characterised in that: described axial diversion post (2)
A length of aerofluxus expansion pipe (1) length 1/2～1 between.
The gas deflation assembly of small size gas turbine the most according to claim 1, it is characterised in that: described aerofluxus expansion pipe (1)
It is connected by the afterbody of runner band linkage section (1-1) with runner band (3).
The gas deflation assembly of small size gas turbine the most according to claim 1, it is characterised in that: described axial diversion post (2)
It is connected with the afterbody of turbine hub (4).
The gas deflation assembly of small size gas turbine the most according to claim 1, it is characterised in that: described axial diversion post (2)
A length of aerofluxus expansion pipe (1) length 3/4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620586652.2U CN205823450U (en) | 2016-06-16 | 2016-06-16 | The gas deflation assembly of small size gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620586652.2U CN205823450U (en) | 2016-06-16 | 2016-06-16 | The gas deflation assembly of small size gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205823450U true CN205823450U (en) | 2016-12-21 |
Family
ID=57568308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620586652.2U Active CN205823450U (en) | 2016-06-16 | 2016-06-16 | The gas deflation assembly of small size gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205823450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578562A (en) * | 2019-08-30 | 2019-12-17 | 上海齐耀动力技术有限公司 | cooling structure and connection structure thereof |
-
2016
- 2016-06-16 CN CN201620586652.2U patent/CN205823450U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578562A (en) * | 2019-08-30 | 2019-12-17 | 上海齐耀动力技术有限公司 | cooling structure and connection structure thereof |
| CN110578562B (en) * | 2019-08-30 | 2023-08-29 | 上海齐耀动力技术有限公司 | Cooling structure and connection structure thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |