CN109236378A - A kind of single stream high-temperature rotor for the high-parameter steam turbine that steam inside is cooling - Google Patents
A kind of single stream high-temperature rotor for the high-parameter steam turbine that steam inside is cooling Download PDFInfo
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- CN109236378A CN109236378A CN201811054760.5A CN201811054760A CN109236378A CN 109236378 A CN109236378 A CN 109236378A CN 201811054760 A CN201811054760 A CN 201811054760A CN 109236378 A CN109236378 A CN 109236378A
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- vane piece
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- temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/08—Heating, heat-insulating or cooling means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The present invention provides a kind of single stream high-temperature rotors of the cooling high-parameter steam turbine of steam inside, the high-parameter steam turbine refers to the steam turbine that main steam temperature is 660 DEG C~740 DEG C, power is 600MW~1400MW, single stream high-temperature rotor uses welded disc turbine rotor structure, and base material is austenitic steel；Rotor weld seam is located at the 1st grade between movable vane piece steam admission side and rotor balancing piston, and close to the side of the 1st grade of movable vane piece steam admission side；Draw the cooling steam for taking steam as single stream high-temperature rotor from the header of boiler intermediate superheater.The present invention realizes the engineer application for the high-parameter steam turbine list stream high-temperature rotor that main steam temperature is 660 DEG C~740 DEG C using forging and the good austenitic steel welded disc turbine rotor of welding performance and steam inside cooling structure.Nickel-base alloy large forgings is substituted using austenitic steel and steam cooling structure, reduces the technical difficulty and cost of high-parameter steam turbine list stream high-temperature rotor forging and welding.
Description
Technical field
The present invention relates to a kind of single stream high-temperature rotors of the cooling high-parameter steam turbine of steam inside, belong to steam turbine technology
Field.
Background technique
For the high-parameter steam turbine that main steam temperature is 660 DEG C~740 DEG C, power is 600MW~1400MW, once again
The high pressure rotor of Hot gas turbine and the super-pressure rotor of double reheat are single stream high-temperature rotor.It is 660 for main steam temperature
DEG C~740 DEG C of high-parameter steam turbine, on its singly stream high-temperature rotor the 1st grade of movable vane piece of installation to the region of the 5th grade of movable vane piece,
Operating temperature is more than 650 DEG C.The upper limit of forging and the operating temperature of the austenitic steel of good welding performance is 650 DEG C, can not be in master
It is used on the single stream high-temperature rotor for the high-parameter steam turbine that vapor (steam) temperature is 660 DEG C~740 DEG C.
The prior art of high-parameter steam turbine is single stream high-temperature rotor using Nickel-based Alloy Welding rotor structure.It adopts
The welding list stream high-temperature rotor that high-parameter steam turbine is manufactured with nickel-base alloy, faces two big technical problems: first is that nickel-base alloy is big
The forging of swaged forging part and welding technique difficulty are big, involve great expense；Second is that global nickel resources are few, it is difficult to high-volume manufacture high parameter vapour
Single stream high-temperature rotor of turbine.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Ovshinskies of high-parameter steam turbine cooling using steam inside
Body steel list stream high-temperature rotor.
In order to solve the above-mentioned technical problem, the high parameter vapour cooling the technical solution of the present invention is to provide a kind of steam inside
Single stream high-temperature rotor of turbine, the high-parameter steam turbine refer to main steam temperature be 660 DEG C~740 DEG C, power be 600MW~
The steam turbine of 1400MW, it is characterised in that: single stream high-temperature rotor uses welded disc turbine rotor structure, and base material is austenitic steel, weldering
Material chemical component is close with base material chemical component；Rotor weld seam is located at the 1st grade between movable vane piece steam admission side and rotor balancing piston,
And close to the side of the 1st grade of movable vane piece steam admission side；Draw from the header of boiler intermediate superheater and takes steam as single stream high-temperature rotor
Cooling steam.
Preferably, the pressure of the cooling steam is higher than steam turbine main steam pressure, and the temperature of the cooling steam is 500
DEG C~600 DEG C.
Preferably, the cooling steam into vapour position, be set to the 1st grade of movable vane piece steam admission side and rotor balancing piston it
Between, and close to the side of rotor balancing piston；
The cooling steam passes through the high temperature section internal chamber that the axial circular hole being evenly arranged enters welded disc turbine rotor；
It into the cooling steam of the high temperature section internal chamber, is flowed out by the radial circular hole being evenly arranged, cooling blade root
The rotor of slot and movable vane piece steam output side, to reduce the operating temperature of single stream high-temperature rotor high temperature section.
It is highly preferred that axial Circularhole diameter is 10mm~50mm, along two axial circulars of high temperature section internal chamber circumferencial direction
The distance between the center of circle in hole is greater than 2 times of axial Circularhole diameters.
It is highly preferred that the radial direction Circularhole diameter is 5mm~30mm, it is circumferentially square in the high temperature section internal chamber surface
It is greater than 2 times of radial Circularhole diameters to distance between the center of circle of two radial circular holes.
Preferably, the steam turbine main steam temperature is more every than austenitic steel operating temperature increases 10 DEG C~20 DEG C, in single stream
1 grade of movable vane piece is newly increased on high-temperature rotor and carries out steam cooling, while being set in the blade root slot of the movable vane piece and movable vane piece steam output side
It is cooling that the two rows of radial circular holes of meter carry out steam.
It is highly preferred that when the steam turbine main steam temperature is 660 DEG C, in singly the 1st grade of movable vane piece of stream high-temperature rotor
It is cooling that blade root slot and the two rows of radial circular holes of movable vane piece steam output side design carry out steam；Radial Circularhole diameter is 5mm~10mm；It is welding
Switching through sub- high temperature section internal chamber surface, along the circumferential direction to be greater than 2 times of radial circular holes straight for distance between the center of circle of two radial circular holes
Diameter.
It is highly preferred that the steam turbine main steam temperature be 680 DEG C when, singly stream high-temperature rotor the 1st grade of movable vane piece with
The blade root slot and movable vane piece steam output side of 2nd grade of movable vane piece design four row's radial direction circular holes altogether, and to carry out steam cooling, wherein the 1st grade dynamic
The blade root slot and movable vane piece steam output side of blade design the radial circular hole that two rows of diameters are 10mm~15mm, the leaf of the 2nd grade of movable vane piece
Root slot and movable vane piece steam output side design the radial circular hole that two rows of diameters are 5mm~10mm；In welded disc turbine rotor high temperature section internal chamber
Along the circumferential direction the distance between center of circle of two radial circular holes is greater than 2 times of radial Circularhole diameters on surface.
It is highly preferred that when the steam turbine main steam temperature is 700 DEG C, in singly the 1st grade of movable vane piece of stream high-temperature rotor, the
The blade root slot and movable vane piece steam output side of 2 grades of movable vane pieces and 3rd level movable vane piece design six row's radial direction circular holes altogether and carry out steam cooling,
In, the blade root slot and movable vane piece steam output side of the 1st grade of movable vane piece design the radial circular hole that two rows of diameters are 15mm~20mm, and the 2nd grade
The blade root slot and movable vane piece steam output side of movable vane piece design the radial circular hole that two rows of diameters are 10mm~15mm, 3rd level movable vane piece
Blade root slot and movable vane piece steam output side design the radial circular hole that two rows of diameters are 5mm~10mm；In welded disc turbine rotor high temperature section inner chamber
Along the circumferential direction the distance between center of circle of two radial circular holes is greater than 2 times of radial Circularhole diameters to chamber surface.
It is highly preferred that when the steam turbine main steam temperature is 720 DEG C, in singly the 1st grade of movable vane piece of stream high-temperature rotor, the
The blade root slot and movable vane piece steam output side of 2 grades of movable vane pieces, 3rd level movable vane piece and the 4th grade of movable vane piece design altogether eight row's radial direction circular holes into
Row steam is cooling, wherein the blade root slot and movable vane piece steam output side of the 1st grade of movable vane piece design the diameter that two rows of diameters are 20mm~25mm
To circular hole, the blade root slot and movable vane piece steam output side of the 2nd grade of movable vane piece design the radial circular hole that two rows of diameters are 15mm~20mm, the
Radial circular hole of the blade root slot and the two rows of diameters of movable vane piece steam output side design of 3 grades of movable vane pieces for 10mm~15mm, the 4th grade of movable vane piece
Blade root slot and movable vane piece steam output side design the radial circular hole that two rows of diameters are 5mm~10mm；Inside welded disc turbine rotor high temperature section
Along the circumferential direction the distance between center of circle of two radial circular holes is greater than 2 times of radial Circularhole diameters to chamber surfaces.
It is highly preferred that when the steam turbine main steam temperature is 740 DEG C, in singly the 1st grade of movable vane piece of stream high-temperature rotor, the
2 grades of movable vane pieces, 3rd level movable vane piece, the 4th grade of movable vane piece and the 5th grade of movable vane piece blade root slot and movable vane piece steam output side design ten altogether
Arranging radial circular hole, to carry out steam cooling, wherein the blade root slot and movable vane piece steam output side of the 1st grade of movable vane piece design two rows of diameters and be
The radial circular hole of 25mm~30mm, the blade root slot and movable vane piece steam output side of the 2nd grade of movable vane piece design two rows of diameters be 20mm~
The radial circular hole of 25mm, the blade root slot and movable vane piece steam output side of 3rd level movable vane piece design the diameter that two rows of diameters are 15mm~20mm
To circular hole, the blade root slot and movable vane piece steam output side of the 4th grade of movable vane piece design the radial circular hole that two rows of diameters are 10mm~15mm, the
The blade root slot and movable vane piece steam output side of 5 grades of movable vane pieces design the radial circular hole that two rows of diameters are 5mm~10mm；In welded disc turbine rotor height
Along the circumferential direction the distance between center of circle of two radial circular holes is greater than 2 times of radial Circularhole diameters to temperature section internal chamber surface.
Preferably, cooling steam is derived from boiler intermediate superheater, and the flow of cooling steam does not have the heat consumption rate of steam turbine
It influences.
Preferably, single stream high-temperature rotor is the high pressure list stream high-temperature rotor or double reheat of single reheat steam turbine
The super high-pressure single stream high-temperature rotor of steam turbine.
Device provided by the invention overcomes the deficiencies in the prior art, using forging and the good 650 DEG C of Austria of welding performance
Family name's body steel welded disc turbine rotor and steam inside cooling structure realize the high parameter steamer that main steam temperature is 660 DEG C~740 DEG C
The engineer application of machine list stream high-temperature rotor.Nickel-base alloy large forgings is substituted using austenitic steel and steam cooling structure, is reduced
The technical difficulty of the high-parameter steam turbine list stream high-temperature rotor forging that main steam temperature is 660 DEG C~740 DEG C and welding and
Cost.
Detailed description of the invention
Fig. 1 is the high-parameter steam turbine high pressure list stream high-temperature soldering rotor signal that main steam temperature is 680 DEG C in embodiment 1
Figure；
Fig. 2 is that the high-parameter steam turbine super high-pressure single stream high-temperature soldering rotor that main steam temperature is 700 DEG C in embodiment 2 shows
It is intended to.
Specific embodiment
Present invention will be further explained below with reference to specific examples.
Embodiment 1
Certain model 660MW single reheat steam turbine, steam turbine main steam temperature are 680 DEG C, the height of single reheat steam turbine
Pressing rotor is single stream high-temperature rotor, as shown in Figure 1.
The high pressure list stream high-temperature rotor uses welded disc turbine rotor structure, and base material is austenitic steel A286 (UNSS66286), wlding
A402.Rotor weld seam 1 is located between the steam admission side 2 and rotor balancing piston 3 of the 1st grade of movable vane piece, and close 1st grade of movable vane piece
Steam admission side 2.
The cooling steam of high pressure list stream high-temperature rotor, is derived from the header of boiler intermediate superheater, and the pressure of cooling steam is high
In main steam pressure, 580 DEG C of cooling steam temperature.
The cooling steam of high pressure list stream high-temperature rotor into vapour position, design is flat in the 1st grade of movable vane piece steam admission side 2 and rotor
Between weighing apparatus piston 3, and close to the side of dummy piston 3, cooling steam enters the height of welded disc turbine rotor by uniformly distributed axial circular hole 4
The diameter of temperature section internal chamber, axial circular hole 4 is taken as 20mm, and along the circumferential direction distance is big between the center of circle of two axial circular holes 4
In 2 times of 4 diameters of axial circular hole.
Into the cooling steam of the high temperature section internal chamber of high pressure list stream high-temperature soldering rotor, pass through uniformly distributed radial circular hole
Outflow, the rotor of cooling blade root slot and movable vane piece steam output side, to reduce the operating temperature of high pressure list stream high-temperature rotor high temperature section, diameter
It is taken as 5mm~15mm to Circularhole diameter, in welded disc turbine rotor high temperature section internal chamber surface along the circumferential direction two radial circular holes
Distance is greater than 2 times of radial Circularhole diameters between the center of circle.
The model steam turbine main steam temperature is 680 DEG C, in the 1st grade and the 2nd grade of movable vane piece of high pressure list stream high-temperature rotor
Blade root slot and the steam output side of movable vane piece design four row's radial direction circular holes to carry out steam cooling, the blade root slot of the 1st grade of movable vane piece and dynamic
Blade steam output side designs the first radial circular hole 5 that two rows of diameters are taken as 10mm~15mm, the blade root slot and movable vane of the 2nd grade of movable vane piece
Piece steam output side designs the second radial circular hole 6 that two rows of diameters are taken as 5mm~10mm, in welded disc turbine rotor high temperature section internal chamber surface
Along the circumferential direction distance is greater than 2 times of radial Circularhole diameters between the center of circle of two radial circular holes.
Model 660MW turbine high-pressure list stream high-temperature technology advantage is: using forging and good 650 DEG C of welding performance
Austenitic steel A286 welded disc turbine rotor and steam inside cooling structure realize the high parameter steamer that main steam temperature is 680 DEG C
The engineer application of machine high pressure list stream high-temperature rotor substitutes nickel-base alloy rotor forging using austenitic steel and steam cooling structure,
Reduce main steam temperature be 680 DEG C single reheat turbine high-pressure list stream high-temperature rotor forging with welding technical difficulty and
Cost.
Embodiment 2
Certain model double reheat 1000MW steam turbine main steam temperature is 700 DEG C, and the super-pressure rotor of steam turbine is single stream
High-temperature rotor, as shown in Figure 2.
The model steam turbine super high-pressure single stream high-temperature rotor uses welded disc turbine rotor structure, base material austenitic steel A286 (UNS
S66286), wlding A402.Rotor weld seam 1 is located between the steam admission side 2 and rotor balancing piston 3 of the 1st grade of movable vane piece, and close
The steam admission side 2 of 1st grade of movable vane piece.
The cooling steam of super high-pressure single stream high-temperature rotor is derived from the header of boiler intermediate superheater, the pressure of cooling steam
Higher than main steam pressure, 560 DEG C of cooling steam temperature.The cooling steam of super high-pressure single stream high-temperature rotor into vapour position, design
Between the steam admission side 2 and rotor balancing piston 3 of the 1st grade of movable vane piece, and close to the side of dummy piston 3, cooling steam passes through
Uniformly distributed axial circular hole 4 enters the high temperature section internal chamber of welded disc turbine rotor, and the diameter of axial circular hole 4 is taken as 30mm, circumferentially side
It is greater than 2 times of axial Circularhole diameters to distance between two axial circular hole centers of circle.
Into the cooling steam of the internal chamber of super high-pressure single stream high-temperature soldering rotor, pass through uniformly distributed radial circular hole stream
Out, the rotor of cooling blade root slot and movable vane piece steam output side, to reduce the operating temperature of super high-pressure single stream high-temperature rotor high temperature section, diameter
It is taken as 5mm~20mm to Circularhole diameter, in welded disc turbine rotor high temperature section internal chamber surface along the circumferential direction two radial circular holes
Distance is greater than 2 times of radial Circularhole diameters between the center of circle.
The model steam turbine main steam temperature be 700 DEG C, super high-pressure single stream high-temperature soldering rotor the 1st grade of movable vane piece,
The blade root slot and movable vane piece steam output side of 2nd grade of movable vane piece and 3rd level movable vane piece design six row's radial direction circular holes and carry out steam cooling, the
The blade root slot and movable vane piece steam output side of 1 grade of movable vane piece design the first radial circular hole the 5, the 2nd that two rows of diameters are taken as 15mm~20mm
The blade root slot and movable vane piece steam output side of grade movable vane piece design the second radial circular hole 6 that two rows of diameters are taken as 10mm~15mm, 3rd level
Two rows of diameters of blade root slot and movable vane piece the steam output side design of movable vane piece are taken as the third radial direction circular hole 7 of 5mm~10mm, are welding
Along the circumferential direction to be greater than 2 times of radial circular holes straight for distance between the center of circle of two radial circular holes for rotor high temperature section internal chamber surface
Diameter.
Model 1000MW steam turbine super high-pressure single stream high-temperature rotor technological merit is: good with welding performance using forging
650 DEG C of austenitic steel A286 welded disc turbine rotors and steam inside cooling structure, realizing main steam temperature is 700 DEG C of senior staff officer
The engineer application of number steam turbine super high-pressure single stream high-temperature rotor is big using austenitic steel and steam cooling structure substitution nickel-base alloy
Swaged forging part reduces the forging of Double reheat steam turbine super high-pressure single stream high-temperature rotor and welding that main steam temperature is 700 DEG C
Technical difficulty and its cost.
The above, only presently preferred embodiments of the present invention, not to the present invention in any form with substantial limitation,
It should be pointed out that under the premise of not departing from the method for the present invention, can also be made for those skilled in the art
Several improvement and supplement, these are improved and supplement also should be regarded as protection scope of the present invention.All those skilled in the art,
Without departing from the spirit and scope of the present invention, when made using disclosed above technology contents it is a little more
Dynamic, modification and the equivalent variations developed, are equivalent embodiment of the invention；Meanwhile all substantial technologicals pair according to the present invention
The variation, modification and evolution of any equivalent variations made by above-described embodiment, still fall within the range of technical solution of the present invention
It is interior.
Claims (10)
1. a kind of single stream high-temperature rotor of the cooling high-parameter steam turbine of steam inside, the high-parameter steam turbine refer to main steam
The steam turbine that temperature is 660 DEG C~740 DEG C, power is 600MW~1400MW, it is characterised in that: single stream high-temperature rotor is adopted
With welded disc turbine rotor structure, base material is austenitic steel；Rotor weld seam be located at the 1st grade of movable vane piece steam admission side and rotor balancing piston it
Between, and close to the side of the 1st grade of movable vane piece steam admission side；Draw from the header of boiler intermediate superheater and steam is taken to turn as single stream high temperature
The cooling steam of son.
2. a kind of single stream high-temperature rotor of the cooling high-parameter steam turbine of steam inside as described in claim 1, feature exist
In: the pressure of the cooling steam is higher than steam turbine main steam pressure, and the temperature of the cooling steam is 500 DEG C~600 DEG C.
3. a kind of single stream high-temperature rotor of the cooling high-parameter steam turbine of steam inside as described in claim 1, feature exist
In: the cooling steam into vapour position, the 1st grade is set between movable vane piece steam admission side and rotor balancing piston, and close to rotor
The side of dummy piston；
The cooling steam passes through the high temperature section internal chamber that the axial circular hole being evenly arranged enters welded disc turbine rotor；
Into the cooling steam of the high temperature section internal chamber, flowed out by the radial circular hole being evenly arranged, cooling blade root slot and
The rotor of movable vane piece steam output side, to reduce the operating temperature of single stream high-temperature rotor high temperature section.
4. a kind of single stream high-temperature rotor of the cooling high-parameter steam turbine of steam inside as claimed in claim 3, feature exist
In: the axial direction Circularhole diameter is 10mm~50mm, along the center of circle of the axial circular hole of high temperature section internal chamber circumferencial direction two it
Between distance be greater than 2 times of axial Circularhole diameters；The radial direction Circularhole diameter is 5mm~30mm, in the high temperature section internal chamber
Along the circumferential direction distance is greater than 2 times of radial Circularhole diameters between the center of circle of two radial circular holes on surface.
5. a kind of single stream high-temperature rotor of the cooling high-parameter steam turbine of steam inside as claimed in claim 3, feature exist
In: the steam turbine main steam temperature is more every than austenitic steel operating temperature to increase 10 DEG C~20 DEG C, new on singly stream high-temperature rotor
Increase by 1 grade of movable vane piece and carry out steam cooling, while in the blade root slot of the movable vane piece and the two rows of radial circles of movable vane piece steam output side design
It is cooling that hole carries out steam.
6. a kind of single stream high-temperature rotor of the cooling high-parameter steam turbine of steam inside as claimed in claim 4, feature exist
In: when the steam turbine main steam temperature is 660 DEG C, in the blade root slot and movable vane piece of singly the 1st grade of movable vane piece of stream high-temperature rotor
It is cooling that the two rows of radial circular holes of steam output side design carry out steam；Radial Circularhole diameter is 5mm~10mm；In welded disc turbine rotor high temperature section
Along the circumferential direction distance is greater than 2 times of radial Circularhole diameters to portion's chamber surfaces between the center of circle of two radial circular holes.
7. a kind of single stream high-temperature rotor of the cooling high-parameter steam turbine of steam inside as claimed in claim 4, feature exist
In: when the steam turbine main steam temperature is 680 DEG C, in the leaf of singly the 1st grade of movable vane piece and the 2nd grade of movable vane piece of stream high-temperature rotor
Root slot and movable vane piece steam output side design four row's radial direction circular holes altogether, and to carry out steam cooling, wherein the blade root slot of the 1st grade of movable vane piece and dynamic
Blade steam output side designs the radial circular hole that two rows of diameters are 10mm~15mm, and the blade root slot and movable vane piece of the 2nd grade of movable vane piece go out vapour
Design the radial circular hole that two rows of diameters are 5mm~10mm in side；In welded disc turbine rotor high temperature section internal chamber surface along the circumferential direction two
The distance between the center of circle of a radial direction circular hole is greater than 2 times of radial Circularhole diameters.
8. a kind of single stream high-temperature rotor of the cooling high-parameter steam turbine of steam inside as claimed in claim 4, feature exist
In: when the steam turbine main steam temperature is 700 DEG C, in the 1st grade of movable vane piece, the 2nd grade of movable vane piece and the 3rd of singly stream high-temperature rotor
The blade root slot and movable vane piece steam output side of grade movable vane piece design six row's radial direction circular holes altogether and carry out steam cooling, wherein the 1st grade of movable vane piece
Blade root slot and movable vane piece steam output side design the radial circular hole that two rows of diameters are 15mm~20mm, the blade root slot of the 2nd grade of movable vane piece
The radial circular hole that two rows of diameters are 10mm~15mm, the blade root slot and movable vane piece of 3rd level movable vane piece are designed with movable vane piece steam output side
Steam output side designs the radial circular hole that two rows of diameters are 5mm~10mm；It is circumferentially square in welded disc turbine rotor high temperature section internal chamber surface
It is greater than 2 times of radial Circularhole diameters to the distance between the center of circle of two radial circular holes.
9. a kind of single stream high-temperature rotor of the cooling high-parameter steam turbine of steam inside as claimed in claim 4, feature exist
In: when the steam turbine main steam temperature is 720 DEG C, in the 1st grade of movable vane piece, the 2nd grade of movable vane piece, the 3rd of singly stream high-temperature rotor
The blade root slot and movable vane piece steam output side of grade movable vane piece and the 4th grade of movable vane piece design eight row's radial direction circular holes altogether, and to carry out steam cooling,
In, the blade root slot and movable vane piece steam output side of the 1st grade of movable vane piece design the radial circular hole that two rows of diameters are 20mm~25mm, and the 2nd grade
The blade root slot and movable vane piece steam output side of movable vane piece design the radial circular hole that two rows of diameters are 15mm~20mm, 3rd level movable vane piece
Blade root slot and movable vane piece steam output side design the radial circular hole that two rows of diameters are 10mm~15mm, the blade root slot of the 4th grade of movable vane piece and
Movable vane piece steam output side designs the radial circular hole that two rows of diameters are 5mm~10mm；On welded disc turbine rotor high temperature section internal chamber surface edge
The distance between the center of circle of circumferencial direction two radial circular holes is greater than 2 times of radial Circularhole diameters.
10. a kind of single stream high-temperature rotor of the cooling high-parameter steam turbine of steam inside as claimed in claim 4, feature exist
In: when the steam turbine main steam temperature is 740 DEG C, in the 1st grade of movable vane piece, the 2nd grade of movable vane piece, the 3rd of singly stream high-temperature rotor
Grade movable vane piece, the 4th grade of movable vane piece and the 5th grade of movable vane piece blade root slot and movable vane piece steam output side design the progress of ten row's radial direction circular holes altogether
Steam is cooling, wherein the blade root slot and movable vane piece steam output side of the 1st grade of movable vane piece design the radial direction that two rows of diameters are 25mm~30mm
Circular hole, the blade root slot and movable vane piece steam output side of the 2nd grade of movable vane piece design the radial circular hole that two rows of diameters are 20mm~25mm, and the 3rd
The blade root slot and movable vane piece steam output side of grade movable vane piece design the radial circular hole that two rows of diameters are 15mm~20mm, the 4th grade of movable vane piece
Blade root slot and movable vane piece steam output side design the radial circular hole that two rows of diameters are 10mm~15mm, the blade root slot of the 5th grade of movable vane piece
The radial circular hole that two rows of diameters are 5mm~10mm is designed with movable vane piece steam output side；In welded disc turbine rotor high temperature section internal chamber surface
Along the circumferential direction the distance between the center of circle of two radial circular holes is greater than 2 times of radial Circularhole diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811054760.5A CN109236378A (en) | 2018-09-11 | 2018-09-11 | A kind of single stream high-temperature rotor for the high-parameter steam turbine that steam inside is cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811054760.5A CN109236378A (en) | 2018-09-11 | 2018-09-11 | A kind of single stream high-temperature rotor for the high-parameter steam turbine that steam inside is cooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109236378A true CN109236378A (en) | 2019-01-18 |
Family
ID=65067784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811054760.5A Pending CN109236378A (en) | 2018-09-11 | 2018-09-11 | A kind of single stream high-temperature rotor for the high-parameter steam turbine that steam inside is cooling |
Country Status (1)
| Country | Link |
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| CN (1) | CN109236378A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19705442A1 (en) * | 1997-02-13 | 1998-08-20 | Bmw Rolls Royce Gmbh | Turbine impeller disk with cooling air channels |
| CN1227619A (en) * | 1996-06-21 | 1999-09-01 | 西门子公司 | Turbomachine and process for cooling a turbomachine |
| CN1261420A (en) * | 1997-06-27 | 2000-07-26 | 西门子公司 | Internally cooled steam turbine shaft and method for cooling the same |
| EP1911933A1 (en) * | 2006-10-09 | 2008-04-16 | Siemens Aktiengesellschaft | Rotor for a turbomachine |
| CN101315034A (en) * | 2008-07-07 | 2008-12-03 | 上海发电设备成套设计研究院 | Wet cooling gas turbine with ultra-high parameter |
-
2018
- 2018-09-11 CN CN201811054760.5A patent/CN109236378A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227619A (en) * | 1996-06-21 | 1999-09-01 | 西门子公司 | Turbomachine and process for cooling a turbomachine |
| DE19705442A1 (en) * | 1997-02-13 | 1998-08-20 | Bmw Rolls Royce Gmbh | Turbine impeller disk with cooling air channels |
| CN1261420A (en) * | 1997-06-27 | 2000-07-26 | 西门子公司 | Internally cooled steam turbine shaft and method for cooling the same |
| EP1911933A1 (en) * | 2006-10-09 | 2008-04-16 | Siemens Aktiengesellschaft | Rotor for a turbomachine |
| CN101315034A (en) * | 2008-07-07 | 2008-12-03 | 上海发电设备成套设计研究院 | Wet cooling gas turbine with ultra-high parameter |
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Application publication date: 20190118 |
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