CN205858418U - A kind of slant shaft type variable-geometry power turbine stator - Google Patents
A kind of slant shaft type variable-geometry power turbine stator Download PDFInfo
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- CN205858418U CN205858418U CN201620846758.1U CN201620846758U CN205858418U CN 205858418 U CN205858418 U CN 205858418U CN 201620846758 U CN201620846758 U CN 201620846758U CN 205858418 U CN205858418 U CN 205858418U
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Abstract
This utility model belongs to gas-turbine plant technical field, it is specifically related to a kind of slant shaft type variable-geometry power turbine stator, this variable-geometry power turbine stator includes upper surface and lower surface, upper surface and lower surface are sphere, and the focus of the axis that the center of circle of upper surface and lower surface is variable-geometry power turbine stator and turbine central axis；The rotary shaft of variable-geometry power turbine stator is sloping shaft；Identical with the center of circle of upper surface and lower surface with the center of circle of upper surface and the upper end wall of lower surface employing sphere-contact and lower end wall.Variable-geometry power turbine stator and upper and lower end wall contact surface make sphere-contact, this ensure that when variable geometry turbine stator rotates, definite value and minimum is ensured with upper and lower end wall gap, which reduce the gas leakage of variable geometry turbine stator two ends radial clearance, decrease loss, on the other hand ensure that variable geometry turbine stator rotates reliable, flexibly.
Description
Technical field:
This utility model belongs to gas-turbine plant technical field, is specifically related to a kind of slant shaft type variable-geometry power turbine
Stator.
Background technology:
The variable-geometry power turbine using adjustable vane technology can effectively regulate and optimize between gas turbine components
Coupling, improve the acceleration and deceleration characteristic of gas turbine and low-load performance.As driven big adjustable vane in starting process, not only may be used
So that the equilibrium running line on compressor characteristics figure is away from stall margin, and can be relatively more assigning enthalpy drop to combustion gas
Generator turbine, allows it have bigger moment of torsion to make rotor accelerate as early as possible, it is achieved the fast starting of unit.When low operating mode, turn down
Adjustable vane reduces effective flow area of turbine thus reduces flow and power, and maintain higher turbine inlet stagnation temperature thus
Likely obtain higher cycle efficieny；When power turbine removal of load, driving suddenly big adjustable vane can make power saturating immediately
Flat enthalpy drop is greatly lowered, and makes the efficiency of power turbine drastically decline, the most even combustion gas can be made to act on dynamic
The moment of torsion of power turbine becomes negative value (moment of torsion contrary with direction of rotation) and becomes braking torque, thus effectively realizes power turbine
Overspeed protection.Thus, low-load performance, in gas turbine field, is particularly required higher by variable-geometry power turbine technology
Marine gas turbine has preferable application prospect.
Owing to there is changeover portion between power turbine and gas generator turbine, cause power turbine upper end wall of head stage guide vane
Meridian expansion is relatively big, and lower end wall is the straight surface of revolution, and variable-geometry power turbine peculiar to vessel uses chopped-off head to become geometry.Additionally, lead
Turbine efficiency can be made to decrease to the change of device venturi circulation area and the gas leakage of adjustable vane blade two ends radial clearance.Existing
For variable-geometry power turbine for improve turbine efficiency as far as possible, improve variable-geometry power turbine performance, the general ball-type end wall that uses, and
Upper end wall and lower end wall are the same revolution centre of sphere.Only in this way guarantee variable geometry turbine stator end wall gap is in each operating mode
Time do not increase, and rotate freely.
Utility model content:
This utility model is to solve marine gas turbine employing variable-geometry power turbine behind efficiency reduction, slewing area
The problem such as limited, and then devise a kind of slant shaft type variable-geometry power turbine stator peculiar to vessel.
The technical solution adopted in the utility model is: a kind of slant shaft type variable-geometry power turbine stator, and this change geometry moves
Power turbine guide vane includes that upper surface and lower surface, upper surface and lower surface are sphere, and the center of circle of upper surface and lower surface is for becoming
The axis of geometry power turbine stator and the focus of turbine central axis.
The rotary shaft of described variable-geometry power turbine stator is sloping shaft.
The upper end wall of sphere-contact and the center of circle of lower end wall and upper surface is used with described upper surface and lower surface
Identical with the center of circle of lower surface.
The beneficial effects of the utility model: compare with art methods, the invention have the advantages that
1, variable-geometry power turbine stator and upper and lower end wall contact surface make sphere-contact, this ensure that change geometry whirlpool
When wheel stator rotates, ensure definite value and minimum with upper and lower end wall gap, which reduce variable geometry turbine stator two ends radially
The gas leakage in gap, decreases loss, on the other hand ensures that variable geometry turbine stator rotates reliable, flexibly.
2, variable-geometry power turbine stator rotary shaft is tilting, and rotary shaft and gas turbine crossing point of axes move for becoming geometry
Power turbine guide vane and the upper and lower end wall contact surface sphere centre of gyration, the most both ensured the unification of center of rotation, and in turn ensure that and lead
Leaf meridional flow road is expansion.
Accompanying drawing illustrates:
Fig. 1 is that structure of the present utility model is through-flow and variable-geometry power turbine stator schematic diagram.
Fig. 2 is the structural representation of variable-geometry power turbine stator in this utility model.
Detailed description of the invention:
With reference to Fig. 2, a kind of slant shaft type variable-geometry power turbine stator, this variable-geometry power turbine stator includes upper surface
1 and lower surface 2, upper surface 1 and lower surface 2 be sphere, and the center of circle of upper surface 1 and lower surface 2 is that variable-geometry power turbine is led
The axis of leaf and the focus of turbine central axis；The rotary shaft of variable-geometry power turbine stator is sloping shaft；With upper surface 1 and under
End face 2 uses the upper end wall of sphere-contact identical with the center of circle of upper surface 1 and lower surface 2 with the center of circle of lower end wall.
Fig. 1 is chopped-off head variable-geometry power turbine stator operating position and structural representation, represent gas generator turbine with
There is changeover portion between power turbine, cause the expansion of power turbine upper end wall of head stage guide vane meridian relatively big, variable-geometry power turbine
Stator contacts according to flat segments with upper and lower end wall, then variable geometry turbine stator needs to leave enough with upper and lower side wall
Gap ensures that stator rotates reliably, will increase so adding end wall loss, so the upper end of variable-geometry power turbine stator
Face 1 and lower surface 2 must use sphere-contact with upper and lower side wall, so rotate along rotary shaft at variable-geometry power turbine stator
Time, it is ensured that itself and upper and lower side wall clearance constant, therefore can reduce end wall gap, reduce loss.
Claims (3)
1. a slant shaft type variable-geometry power turbine stator, it is characterised in that: this variable-geometry power turbine stator includes upper end
Face (1) and lower surface (2), upper surface (1) and lower surface (2) is sphere, and the center of circle of upper surface (1) and lower surface (2) is for becoming
The axis of geometry power turbine stator and the focus of turbine central axis.
A kind of slant shaft type variable-geometry power turbine stator the most according to claim 1, it is characterised in that: described change is several
The rotary shaft of what power turbine stator is sloping shaft.
A kind of slant shaft type variable-geometry power turbine stator the most according to claim 1, it is characterised in that: upper with described
End face (1) and lower surface (2) use the upper end wall of sphere-contact and the center of circle of lower end wall and upper surface (1) and lower surface
(2) the center of circle is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620846758.1U CN205858418U (en) | 2016-08-08 | 2016-08-08 | A kind of slant shaft type variable-geometry power turbine stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620846758.1U CN205858418U (en) | 2016-08-08 | 2016-08-08 | A kind of slant shaft type variable-geometry power turbine stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205858418U true CN205858418U (en) | 2017-01-04 |
Family
ID=57657538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620846758.1U Active CN205858418U (en) | 2016-08-08 | 2016-08-08 | A kind of slant shaft type variable-geometry power turbine stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205858418U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050322A (en) * | 2016-08-08 | 2016-10-26 | 中国船舶重工集团公司第七�三研究所 | Tilting axis type variable-geometry power turbine guide vane |
| CN110617117A (en) * | 2019-08-02 | 2019-12-27 | 中国航发贵阳发动机设计研究所 | Method for adjusting throat area of turbine guider |
| CN115163559A (en) * | 2022-06-24 | 2022-10-11 | 中国船舶重工集团公司第七0三研究所 | Low-loss gas compressor transition section structure |
| CN115749968A (en) * | 2022-10-31 | 2023-03-07 | 东方电气集团东方汽轮机有限公司 | Hybrid turbine structure and operation method of hybrid turbine |
-
2016
- 2016-08-08 CN CN201620846758.1U patent/CN205858418U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050322A (en) * | 2016-08-08 | 2016-10-26 | 中国船舶重工集团公司第七�三研究所 | Tilting axis type variable-geometry power turbine guide vane |
| CN110617117A (en) * | 2019-08-02 | 2019-12-27 | 中国航发贵阳发动机设计研究所 | Method for adjusting throat area of turbine guider |
| CN115163559A (en) * | 2022-06-24 | 2022-10-11 | 中国船舶重工集团公司第七0三研究所 | Low-loss gas compressor transition section structure |
| CN115163559B (en) * | 2022-06-24 | 2024-05-17 | 中国船舶重工集团公司第七0三研究所 | Low-loss transition section structure of gas compressor |
| CN115749968A (en) * | 2022-10-31 | 2023-03-07 | 东方电气集团东方汽轮机有限公司 | Hybrid turbine structure and operation method of hybrid turbine |
| CN115749968B (en) * | 2022-10-31 | 2024-05-07 | 东方电气集团东方汽轮机有限公司 | Mixed turbine structure and operation method of mixed turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190801 Address after: 150078 No. 31 Honghu Road, Yingbin Road, Harbin hi tech Industrial Development Zone, Heilongjiang, Harbin, China Patentee after: Longjiang broad sail gas turbine Co., Ltd. Address before: 150000 Heilongjiang city of Harbin province Honghu Qunli Road Development Zone No. 35 Patentee before: No.703 Inst. China Ship Heavy Industry Group Co. |
|
| TR01 | Transfer of patent right |