CN207122328U - A kind of efficient wide load blade profile for turbine blade - Google Patents
A kind of efficient wide load blade profile for turbine blade Download PDFInfo
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- CN207122328U CN207122328U CN201721184912.4U CN201721184912U CN207122328U CN 207122328 U CN207122328 U CN 207122328U CN 201721184912 U CN201721184912 U CN 201721184912U CN 207122328 U CN207122328 U CN 207122328U
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Abstract
A kind of efficient wide load blade profile for turbine blade, it is related to a kind of efficiently wide load blade profile, and in particular to a kind of efficient wide load blade profile for turbine blade.The utility model is in order to solve Steam Turbine when varying load condition is run, the problem of unit efficiency changes greatly.The utility model is sequentially connected and formed by leading edge, back of the body arc, inner arc and lagging edge head and the tail.The utility model belongs to steam turbine field.
Description
Technical field
It the utility model is related to a kind of efficiently wide load blade profile, and in particular to a kind of for the efficient wide negative of turbine blade
Lotus leaf type, belong to steam turbine field.
Background technology
At present, the electricity consumption field in China is presented is used from high energy-consuming industry to new industry, service trade and resident living
The conversion of electricity, higher requirement is proposed to the peak modulation capacity of Power Plant, unit has become in the operation of varying duty state
A kind of new normality.So improving economy of the unit in variable load operation, pollutant emission is reduced, it is significant to power plant.
Critical component of the steam turbine as thermal power plant, directly affects profit from power plant, and blade profile is to determine the crucial portion of turbine efficiency
One of part.Efficient wide load blade profile efficiency under rated loan condition is higher, and when being run under varying load condition, efficiency change
Amplitude is smaller.Therefore, it is badly in need of a kind of efficiently wide load blade profile of exploitation at present.
Utility model content
The problem of the utility model is to solve Steam Turbine when varying load condition is run, and unit efficiency changes greatly, enters
And propose a kind of efficient wide load blade profile for turbine blade.
The utility model adopts the technical scheme that to solve the above problems：The utility model is by leading edge, back of the body arc, inner arc
Composition is sequentially connected with lagging edge head and the tail.
Further, the established angle of blade profile is 65 °~28 °.
Further, the geometry inlet angles of blade profile are 66 °~135 °.
The beneficial effects of the utility model are：First, the efficiently wide load blade profile of the utility model, solves Steam Turbine and is becoming
Load condition run when, efficiency reduce, loss increase the problem of.2nd, the efficiently wide load blade profile of the utility model, with reference to full three-dimensional
Designing technique, based on one-dimensional/accurate three-dimensional/full three-dimensional pneumatic, thermodynamic analysis calculate, blade profile is in angle of attack variation ± 30 ° scope
Interior, loss coefficient change is no more than 0.2%, and the loss coefficient excursion of common blade profile is 1%.3rd, the utility model is efficient
The Mach number adaptability of wide load blade profile is very good, and Mach number is during 0.2 increases to 0.6, the excursion of profile loss
No more than 0.1%, and as Mach number increases, loss slightly reduces.4th, the efficiently wide load blade profile of the utility model is put down
Face Cascade Aerodynamics experiment, it was demonstrated that its validity in terms of varying load condition operation.
Brief description of the drawings
Fig. 1 is the flow passage structure schematic diagram of the utility model blade profile；
Fig. 2 is blade profile established angle, geometry inlet angles schematic diagram；
Fig. 3 is enlarged drawing at I in Fig. 2；
Fig. 4 is change curve of the profile loss coefficient with the angle of attack；
Fig. 5 is change curve of the profile loss coefficient with exit Mach number.
Embodiment
Embodiment one：Illustrate present embodiment with reference to Fig. 1 to Fig. 5, one kind described in present embodiment is used for steamer
The efficient wide load blade profile of machine blade is sequentially connected and formed by leading edge 1, back of the body arc 2, inner arc 3 and the head and the tail of lagging edge 4.Carry on the back arc 2, interior
Arc 3 is more straight in the close side of leading edge 1 and outwardly convex, is slowly shunk to lagging edge 4 in remaining position.By carrying on the back arc 2
With more straight position of the inner arc 3 at leading edge 1, when the angle change scope of steam stream is larger, it is ensured that blade profile have
There is preferable angle of attack adaptability, profile loss is smaller.By carrying on the back the control of arc 2 and each position curvature of inner arc 3, make throat's chi
It is very little to seamlessly transit, the flowing before and after throat is rationally controlled, the change for the boundary-layer that Mach number change is brought is reduced, reduces blade profile
Loss.
Embodiment two：Illustrate present embodiment with reference to Fig. 1 to Fig. 5, one kind described in present embodiment is used for steamer
The established angle β of the blade profile of the efficient wide load blade profile of machine blade is 65 °~28 °.Other compositions and annexation and specific implementation
Mode one is identical.
Embodiment three：Illustrate present embodiment with reference to Fig. 1 to Fig. 5, one kind described in present embodiment is used for steamer
The geometry inlet angles α of the blade profile of the efficient wide load blade profile of machine blade is 66 °~135 °.Blade profile steam admission side Curvature varying is smaller,
Interior back of the body arc is straight, has adapted to blade aerodynamic parameter Three-dimensional Flow, while blade profile efficiency is ensured, has met interstage matched and intensity
It is required that.Other compositions and annexation are identical with embodiment one.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is made any formal
Limitation, although the utility model is disclosed above with preferred embodiment, but be not limited to the utility model, it is any ripe
Professional and technical personnel is known, is not being departed from the range of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model
Hold, according to the technical essence of the utility model, within the spirit and principles of the utility model, what above example was made appoints
What simple modification, equivalent substitution and improvement etc., still falls within the protection domain of technical solutions of the utility model.
Claims (3)
- A kind of 1. efficient wide load blade profile for turbine blade, it is characterised in that：It is described a kind of for turbine blade Efficient wide load blade profile is sequentially connected is formed from beginning to end by leading edge (1), back of the body arc (2), inner arc (3) and lagging edge (4).
- A kind of 2. efficient wide load blade profile for turbine blade according to claim 1, it is characterised in that：The peace of blade profile It is 65 °~28 ° to fill angle (β).
- A kind of 3. efficient wide load blade profile for turbine blade according to claim 1, it is characterised in that：Blade profile it is several What inlet angles (α) is 66 °~135 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721184912.4U CN207122328U (en) | 2017-09-15 | 2017-09-15 | A kind of efficient wide load blade profile for turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721184912.4U CN207122328U (en) | 2017-09-15 | 2017-09-15 | A kind of efficient wide load blade profile for turbine blade |
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| Publication Number | Publication Date |
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| CN207122328U true CN207122328U (en) | 2018-03-20 |
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| CN201721184912.4U Active CN207122328U (en) | 2017-09-15 | 2017-09-15 | A kind of efficient wide load blade profile for turbine blade |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489461A (en) * | 2017-09-15 | 2017-12-19 | 哈尔滨汽轮机厂有限责任公司 | A kind of efficient wide load blade profile for turbine blade |
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2017
- 2017-09-15 CN CN201721184912.4U patent/CN207122328U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489461A (en) * | 2017-09-15 | 2017-12-19 | 哈尔滨汽轮机厂有限责任公司 | A kind of efficient wide load blade profile for turbine blade |
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