CN109404049A - A kind of helium turbine connection structure of fast demountable - Google Patents
A kind of helium turbine connection structure of fast demountable Download PDFInfo
- Publication number
- CN109404049A CN109404049A CN201811625049.0A CN201811625049A CN109404049A CN 109404049 A CN109404049 A CN 109404049A CN 201811625049 A CN201811625049 A CN 201811625049A CN 109404049 A CN109404049 A CN 109404049A
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- China
- Prior art keywords
- turbine
- casing
- guide vane
- rotor
- rings
- 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.)
- Granted
Links
- 239000001307 helium Substances 0.000 title claims abstract description 29
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 29
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000007789 sealing Methods 0.000 claims description 38
- 238000001816 cooling Methods 0.000 claims description 27
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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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
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
- F01D1/04—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines traversed by the working-fluid substantially axially
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/243—Flange connections; Bolting arrangements
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/246—Fastening of diaphragms or stator-rings
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/26—Double casings; Measures against temperature strain in casings
-
- 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
- F01D5/025—Fixing blade carrying members on shafts
-
- 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
- F01D5/027—Arrangements for balancing
-
- 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
-
- 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
- F01D5/085—Heating, heat-insulating or cooling means cooling fluid circulating inside the rotor
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
Abstract
A kind of helium turbine connection structure of fast demountable, it is related to helium compressor field.It is to divide integral structure in non-that the present invention, which solves existing helium compressor there are turbine casing, and turbine shroud is not easy to assemble, and turbine rotor rotor disk is an integral structure, the big problem of assembly difficulty.Stators of the invention are set on turbine rotor, the both ends of the stators are connect with external feed stream casing and exit casing respectively, first bolt hole of six rotor disks of long draw screw bolt passes of turbine rotor, one end of long draw bolt and the turbine front axle of coaxial arrangement bolt, and the other end of long draw bolt and the turbine rear axle of coaxial arrangement bolt；Turbine casing is monoblock type cylindrical structure, and six stator guide vane rings of stators are sequentially arranged at from front to back on the inner periphery of turbine casing, and six stator guide vane rings are staggered with six rotor disks.The present invention is used for the fast assembling-disassembling of helium compressor turbine shroud.
Description
Technical field
The present invention relates to helium compressor fields, more particularly to a kind of helium turbine connection structure of fast demountable.
Background technique
Turbine is to push the band dynamic load of blade high speed rotation to carry out work done using high-temperature fuel gas in gas-turbine unit
Component.Helium compressor is mainly using helium as working medium.Turbine is the important component of helium compressor, from assembling structure and
For function, turbine mainly includes turbine rotor, turbine casing, inlet casing, exit casing, stator guider and each stator blade
Ring.Since unit overall dimension is smaller, revolving speed is high, therefore higher to seal request.Turbine casing uses the entirety divided in non-
Structure, thus it is larger to the structure design difficulty of turbine rotor.Since turbine temperature field is more complex, become under high temperature, high revolving speed
Shape is complicated, easily generation inner body failure, and existing turbine casing is an integral structure, not easy to assemble, is internal body
Parts/maintenance and replacement bring larger difficulty.
In conclusion existing helium compressor is to divide integral structure in non-there are turbine casing, turbine shroud is not easy
Dismounting, turbine rotor rotor disk are an integral structure, the big problem of assembly difficulty.
Summary of the invention
The present invention is to divide integral structure, turbine shroud in non-to solve existing helium compressor there are turbine casing
Not easy to assemble, turbine rotor rotor disk is an integral structure, the big problem of assembly difficulty, and then provides a kind of fast demountable
Helium turbine connection structure.
The technical scheme is that
A kind of helium turbine connection structure of fast demountable, it includes turbine rotor and stators, stators set
It being located on turbine rotor, steam turbine casket is connect into steam turbine casket and out with outside respectively at the both ends of the stators,
Turbine rotor includes turbine front axle, turbine rear axle, six rotor disks and 2N long draw bolt, N be greater than etc.
In positive integer,
The outer diameter of six rotor disks is identical, along the circumferential direction uniformly distributed N number of first cooling on the end face of each rotor disk
Air-through holes, uniformly distributed two the first bolts hole between two neighboring first cooling air recirculation hole, one end of turbine front axle is set
There is front axle boss, one end of turbine rear axle is equipped with rear axle boss, and 2N long draw bolt sequentially passes through six respectively
First bolt hole of rotor disk, the front axle boss bolt of the turbine front axle of one end and coaxial arrangement of long draw bolt,
The rear axle boss of the turbine rear axle of the other end and coaxial arrangement of long draw bolt bolts；
Stators include turbine casing and six stator guide vane rings, and turbine casing is monoblock type cylindrical structure, and six
Stator guide vane ring is sequentially arranged at from front to back on the inner periphery of turbine casing, six stator guide vane rings and six rotor wheels
Disk is staggered.
Further, turbine rotor further includes six step tooth sealing rings, two neighboring rotor wheel in six rotor disks
It is equipped with a step tooth sealing ring between disk, a step tooth sealing is equipped between turbine front axle and rotor disk adjacent thereto
Ring, six step tooth sealing rings and six stator guide vane rings correspond, the platform of six stator guide vane rings and step tooth sealing ring
The sealing cooperation of rank tooth,
The outer diameter of six step tooth sealing rings is identical, along the circumferential direction uniformly distributed N number of on the end face of each step tooth sealing ring
Second cooling air recirculation hole, on the N number of second cooling air recirculation hole and each rotor disk on each step tooth sealing ring
N number of first cooling air recirculation hole correspond,
Uniformly distributed two the second bolts hole between two neighboring second cooling air recirculation hole, on each step tooth sealing ring
2N the first bolts hole on 2N the second bolts hole and each rotor disk correspond, and six step tooth sealing rings pass through length
Stay-bolt is connect with rotor disk.
Further, turbine rotor further includes six movable vane blade units, and each movable vane blade unit includes several movable vane pieces, often
The root of a movable vane piece is equipped with tenon tooth, circumferentially uniformly distributed multiple tenons matched with tenon tooth on the excircle of each rotor disk
Slot, movable vane piece are connect by mutually matched tenon tooth and tongue-and-groove with rotor disk.
Further, stators further include six retaining rings, in six stator guide vane rings two neighboring stator guide vane ring it
Between be equipped with a retaining ring, outside go out between steam turbine casket and stator guide vane ring adjacent thereto be equipped with a retaining ring, six retaining rings according to
Secondary to be mounted on the inner cylinder face of turbine casing, six retaining rings and six movable vane blade units correspond, retaining ring and movable vane piece list
The leaf-teeth of the movable vane piece end of member seal cooperation.
Further, six annular guide vane slots, the root of each stator guide vane ring are uniformly provided on the inner periphery of turbine casing
Portion is equipped with the annular guide vane boss matched with annular guide vane slot, and six stator guide vane rings pass through mutually matched annular guide vane slot
It is connect with annular guide vane boss with turbine casing.
Further, it is equipped with an annular retaining ring slot between the two neighboring annular guide vane slot on turbine casing inner periphery,
Outside into being equipped with an annular retaining ring slot between steam turbine casket and annular guide vane slot adjacent thereto, the root of each retaining ring be equipped with
The annular retaining ring boss that annular retaining ring slot matches, six retaining rings pass through mutually matched annular retaining ring slot and annular retaining ring boss
It is connect with turbine casing.
Further, turbine casing includes interior casing and outer casing, and the internal diameter of interior casing and outer casing is equal, interior casing
One end is equipped with interior casing connecting flange, and one end of outer casing is equipped with the first outer casing connecting flange, and one end of interior casing passes through phase
One end of the interior casing connecting flange mutually cooperated and the first outer casing connecting flange and outer casing bolts.
Further, the other end insertion of interior casing is external into the inside of steam turbine casket 3, the external cylindrical surface of interior casing and outside
Into the inner cylinder face clearance fit of steam turbine casket.
Further, the other end of outer casing is equipped with for going out the second outer casing connection method that steam turbine casket is connect with outside
It is blue.
The present invention has the effect that compared with prior art
1, the turbine rotor 1 of present embodiment is axial to dismantle, and the turbine casing 2-1 being matched therewith is adopted
With in non-points of overall structure, there is good intensity relative to the turbine casing of separation structure in use in this way, and guaranteeing
Under conditions of stability, thickness can be relatively thin, and this structure had not only alleviated turbine overall weight, but also increases shell rigidity.Make
For the structure of turbine rotor 1 under conditions of meeting requirement, structure can be simple and compact.When internal body part needs to carry out
When maintenance and replacement, convenient for the dismounting of part, the replacement speed and working efficiency of internal body part are effectively improved.
2, the first cooling air recirculation hole 1-3-1 on six end faces rotor disk 1-3 of present embodiment plays balance
The effect of air pressure, the gas pressure between each rotor disk 1-3 disk of active balance hold rotor disk 1-3 only axially
By the pulling force of long draw bolt 1-4, the Strength Safety nargin of long draw bolt 1-4 is effectively protected, it can be by six rotors
The air discharge of seal chamber after wheel disc 1-3 combination, makes the air pressure and 1 external pressure of turbine rotor in six rotor disk 1-3
It is equal.Since rotor disk 1-3 is that solid circular configuration is formed between wheel disc and wheel disc after six rotor disk 1-3 combinations
Seal chamber, if seal chamber is designed to dead space structure, the gas in helium turbine work in wheel disc seal chamber is heated, temperature
It increases and generates thermal expansion force, destruction can be generated to long draw bolt 1-4, therefore design the first cooling air recirculation hole 1-
3-1 can protect long draw bolt 1-4, prevent the impaired deformation of long draw bolt 1-4.
3, the turbine casing 2-1 of present embodiment is designed using damascene structures, the one end interior casing 2-A and coaxial arrangement
Outer casing 2-B connection, interior casing 2-A other end insertion is external into the inside of steam turbine casket 3, is effectively shortened six grades of helium and calms the anger
The entire length of machine turbine, saves use space.
4, the intensity of present embodiment, vibration characteristics are good, and structure is safe and reliable, and it is firm to connect and position between components.
Detailed description of the invention
Fig. 1 is the present invention and outside into the steam turbine casket and out assembling schematic diagram of steam turbine casket；
Fig. 2 is the structural schematic diagram of six helium compressor turbine shrouds of fast demountable of the invention；
Fig. 3 is turbine rotor structural schematic diagram of the invention；
Fig. 4 is stators structural schematic diagram of the invention；
Fig. 5 is the main view of rotor disk of the invention；
Fig. 6 is the cross-sectional view of step tooth sealing ring of the invention.
Specific embodiment
Specific embodiment 1: illustrating present embodiment, a kind of fast demountable of present embodiment in conjunction with Fig. 1 to Fig. 5
Helium turbine connection structure, it includes turbine rotor 1 and stators 2, and stators 2 are set on turbine rotor 1, described
Steam turbine casket 4 is connect into steam turbine casket 3 and out with outside respectively at the both ends of stators 2,
Turbine rotor 1 includes turbine front axle 1-1, turbine rear axle 1-2, six rotor disk 1-3 and 2N long draw bolt
1-4, N are the positive integer more than or equal to 4,
The outer diameter of six rotor disk 1-3 is identical, along the circumferential direction uniformly distributed N number of the on the end face of each rotor disk 1-3
Uniformly distributed two the first bolt hole 1- between one cooling air recirculation hole 1-3-1, two neighboring first cooling air recirculation hole 1-3-1
One end of 3-2, turbine front axle 1-1 are equipped with front axle boss 1-1-1, and one end of turbine rear axle 1-2 is equipped with rear axle boss
1-2-1,2N long draw bolt 1-4 sequentially pass through the first bolt hole 1-3-2 of six rotor disk 1-3, long draw spiral shell respectively
The front axle boss 1-1-1 of the turbine front axle 1-1 of one end and coaxial arrangement of bolt 1-4 is bolted, and long draw bolt 1-4's is another
End and the rear axle boss 1-2-1 of the turbine rear axle 1-2 of coaxial arrangement are bolted；
Stators 2 include turbine casing 2-1 and six stators guide vane ring 2-2, turbine casing 2-1 are that monoblock type is cylindrical
Structure, six stator guide vane ring 2-2 are sequentially arranged at from front to back on the inner periphery of turbine casing 2-1, and six stators are led
Leaf joint 2-2 is staggered with six rotor disk 1-3.
The first cooling air circulation when the quantity of long draw bolt 1-4 is 8, on the end face each rotor disk 1-3
The quantity of hole 1-3-1 is 4, and the quantity of the first bolt hole 1-3-2 on the end face each rotor disk 1-3 is 8；
The first cooling air circulation when the quantity of long draw bolt 1-4 is 10, on the end face each rotor disk 1-3
The quantity of hole 1-3-1 is 5, and the quantity of the first bolt hole 1-3-2 on the end face each rotor disk 1-3 is 8；
The first cooling air circulation when the quantity of long draw bolt 1-4 is 12, on the end face each rotor disk 1-3
The quantity of hole 1-3-1 is 6, and the quantity of the first bolt hole 1-3-2 on the end face each rotor disk 1-3 is 8；
The first cooling air circulation when the quantity of long draw bolt 1-4 is 14, on the end face each rotor disk 1-3
The quantity of hole 1-3-1 is 7, and the quantity of the first bolt hole 1-3-2 on the end face each rotor disk 1-3 is 8.
Specific embodiment 2: illustrating present embodiment in conjunction with Fig. 3 and Fig. 6, the turbine rotor 1 of present embodiment further includes
It is close that a step tooth is equipped in six step tooth sealing rings 1-5, six rotor disk 1-3 between two neighboring rotor disk 1-3
A step tooth sealing ring 1-5, six platforms are equipped between seal ring 1-5, turbine front axle 1-1 and rotor disk 1-3 adjacent thereto
Rank tooth sealing ring 1-5 and six stator guide vane ring 2-2 are corresponded, six stator guide vane ring 2-2 and step tooth sealing ring 1-5's
Step tooth 1-5-3 sealing cooperation,
The outer diameter of six step tooth sealing ring 1-5 is identical, on the end face of each step tooth sealing ring 1-5 along the circumferential direction
N number of second cooling air recirculation hole 1-5- on cloth N number of second cooling air recirculation hole 1-5-1, each step tooth sealing ring 1-5
1 corresponds with N number of first cooling air recirculation hole 1-3-1 on each rotor disk 1-3,
Uniformly distributed two the second bolt hole 1-5-2, each step tooth between two neighboring second cooling air recirculation hole 1-5-1
2N the first bolt hole 1-3-2 on 2N the second bolt hole 1-5-2 and each rotor disk 1-3 on sealing ring 1-5 are one by one
Corresponding, six step tooth sealing ring 1-5 are connect by long draw bolt 1-4 with rotor disk 1-3.So set, six steps
Cooperation is sealed between tooth sealing ring 1-5 and six stator guide vane ring 2-2, step tooth sealing ring 1-5 includes honeycomb seal ring, is had
Preferable sealing effect.The first cooling air recirculation hole on the second cooling air recirculation hole 1-5-1 and rotor disk 1-3
1-3-1 is corresponded, and the second cooling air recirculation hole 1-5-1 on the end face of six step tooth sealing ring 1-5 plays Balance Air
The effect of pressure, the gas pressure between active balance each step tooth sealing ring 1-5 and rotor disk 1-3, effectively protects
Air in 1 seal chamber of turbine rotor after combination can be discharged, make turbine by the Strength Safety nargin of long draw bolt 1-4
Air pressure in rotor 1 is equal with 1 external pressure of turbine rotor.Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 3: illustrating present embodiment in conjunction with Fig. 3 and Fig. 5, the turbine rotor 1 of present embodiment further includes
Six movable vane blade units, each movable vane blade unit include several movable vane piece 1-6, and the root of each movable vane piece is equipped with tenon tooth, often
Circumferentially uniformly distributed multiple tongue-and-groove 1-3-3 matched with tenon tooth, movable vane piece pass through mutual cooperation on the excircle of a rotor disk 1-3
Tenon tooth and tongue-and-groove 1-3-3 connect with rotor disk 1-3.Other compositions and connection relationship and specific embodiment one or two-phase
Together.
Specific embodiment 4: illustrating present embodiment in conjunction with Fig. 3 and Fig. 4, the stators 2 of present embodiment further include
A retaining ring 2-3 is equipped in six retaining rings 2-3, six stator guide vane ring 2-2 between two neighboring stator guide vane ring 2-2, it is external
It is equipped with retaining ring a 2-3, six retaining ring 2-3 between steam turbine casket 4 and stator guide vane ring 2-2 adjacent thereto out and is sequentially arranged at whirlpool
On the inner cylinder face for taking turns casing 2-1, six retaining ring 2-3 and six movable vane blade units are corresponded, retaining ring 2-3 and movable vane blade unit
The end movable vane piece 1-6 leaf-teeth 1-6-1 seal cooperation.So set, the movable vane of six retaining ring 2-3 and six movable vane blade units
The leaf-teeth 1-6-1 of piece 1-6 seals cooperation, has preferable sealing effect.Other compositions and connection relationship and specific embodiment
One, two or three is identical.
Specific embodiment 5: embodiment is described with reference to Fig. 4, the inner periphery of the turbine casing 2-1 of present embodiment
On be uniformly provided with the root of six annular guide vane slot 2-1-1, each stator guide vane ring 2-2 and be equipped with and annular guide vane slot 2-1-1 phase
The annular guide vane boss 2-2-1 of cooperation, six stator guide vane ring 2-2 pass through mutually matched annular guide vane slot 2-1-1 and annular
Guide vane boss 2-2-1 is connect with turbine casing 2-1.So set, being effectively guaranteed stator guide vane ring 2-2 and turbine casing 2-
Bonding strength between 1.Other compositions and connection relationship and specific embodiment one, two, three or four are identical.
Specific embodiment 6: embodiment is described with reference to Fig. 4, on the turbine casing 2-1 inner periphery of present embodiment
Two neighboring annular guide vane slot 2-1-1 between be equipped with an annular retaining ring slot 2-1-2, it is external into steam turbine casket 3 and adjacent thereto
Annular guide vane slot 2-1-1 between be equipped with the root of annular retaining ring slot a 2-1-2, each retaining ring 2-3 and be equipped with and annular retaining ring
The annular retaining ring boss 2-3-1 that slot 2-1-2 is matched, six retaining ring 2-3 pass through mutually matched annular retaining ring slot 2-1-2 and ring
Shape retaining ring boss 2-3-1 is connect with turbine casing 2-1.So set, be effectively guaranteed retaining ring 2-3 and turbine casing 2-1 it
Between bonding strength.Other compositions and connection relationship and specific embodiment one, two, three, four or five are identical.
Specific embodiment 7: illustrating present embodiment in conjunction with Fig. 2 and Fig. 4, the turbine casing 2-1 of present embodiment includes
The internal diameter of interior casing 2-A and outer casing 2-B, interior casing 2-A and outer casing 2-B are equal, and one end of interior casing 2-A is equipped with interior casing
One end of connecting flange 2-A-1, outer casing 2-B are equipped with the first outer casing connecting flange 2-B-1, and one end of interior casing 2-A passes through
One end of the mutually matched outer casing connecting flange 2-B-1 of interior casing connecting flange 2-A-1 and first and outer casing 2-B bolts.
So set, by the way of flanged joint, convenient for the dismounting between interior casing 2-A and outer casing 2-B.Other compositions and connection
Relationship and specific embodiment one, two, three, four, five or six are identical.
Specific embodiment 8: being illustrated in combination with fig. 1 and fig. 4 present embodiment, the interior casing 2-A's of present embodiment is another
End insertion is external into the inside of steam turbine casket 3, and the external cylindrical surface of interior casing 2-A is matched with outside into the inner cylinder face gap of steam turbine casket 3
It closes.So set, turbine casing 2-1 is designed using damascene structures, the outer casing 2-B of the one end interior casing 2-A and coaxial arrangement
Connection, interior casing 2-A other end insertion is external into the inside of steam turbine casket 3, is effectively shortened six grades of helium compressor turbines
Entire length saves use space.Other compositions and connection relationship and specific embodiment one, two, three, four, five, six or seven
It is identical.
Specific embodiment 9: illustrating present embodiment in conjunction with Fig. 2 and Fig. 4, the outer casing 2-B's of present embodiment is another
End is equipped with for going out the second outer casing connecting flange 2-B-2 that steam turbine casket 4 is connect with outside.So set, using flanged joint
Mode, convenient for outer casing 2-B and it is external go out steam turbine casket 4 between dismounting.Other compositions and connection relationship and specific embodiment party
Formula one, two, three, four, five, six, seven or eight are identical.
Claims (9)
1. a kind of helium turbine connection structure of fast demountable, it includes turbine rotor (1) and stators (2), and turbine is quiet
Sub (2) are set on turbine rotor (1), the both ends of the stators (2) into steam turbine casket (3) and the out steam turbine casket with outside respectively
(4) it connects,
It is characterized by: turbine rotor (1) include turbine front axle (1-1), turbine rear axle (1-2), six rotor disks (1-3) and
2N long draw bolt (1-4), N are the positive integer more than or equal to (4),
The outer diameter of six rotor disks (1-3) is identical, along the circumferential direction uniformly distributed N number of the on the end face of each rotor disk (1-3)
One cooling air recirculation hole (1-3-1), uniformly distributed two the first bolts between two neighboring first cooling air recirculation hole (1-3-1)
The one end in hole (1-3-2), turbine front axle (1-1) is equipped with front axle boss (1-1-1), and one end of turbine rear axle (1-2) is equipped with
Rear axle boss (1-2-1), 2N long draw bolt (1-4) sequentially pass through the first spiral shell of six rotor disks (1-3) respectively
Keyhole (1-3-2), the front axle boss (1-1- of the turbine front axle (1-1) of one end and coaxial arrangement of long draw bolt (1-4)
1) it bolts, the rear axle boss (1-2-1) of the turbine rear axle (1-2) of the other end and coaxial arrangement of long draw bolt (1-4)
Bolt；
Stators (2) include turbine casing (2-1) and six stator guide vane rings (2-2), and turbine casing (2-1) is monoblock type circle
Column construction, six stator guide vane rings (2-2) are sequentially arranged at from front to back on the inner periphery of turbine casing (2-1), and described six
A stator guide vane ring (2-2) is staggered with six rotor disks (1-3).
2. a kind of helium turbine connection structure of fast demountable according to claim 1, it is characterised in that: turbine rotor
(1) further include six step tooth sealing rings (1-5), set between two neighboring rotor disk (1-3) in six rotor disks (1-3)
There is a step tooth sealing ring (1-5), a platform is equipped between turbine front axle (1-1) and rotor disk adjacent thereto (1-3)
Rank tooth sealing ring (1-5), six step tooth sealing rings (1-5) correspond with six stator guide vane rings (2-2), and six stators are led
The step tooth (1-5-3) of leaf joint (2-2) and step tooth sealing ring (1-5), which seal, to be cooperated,
The outer diameter of six step tooth sealing rings (1-5) is identical, on the end face of each step tooth sealing ring (1-5) along the circumferential direction
The N number of second cooling air recirculation hole (1-5-1) of cloth, N number of second cooling air recirculation hole on each step tooth sealing ring (1-5)
N number of first cooling air recirculation hole (1-3-1) on (1-5-1) and each rotor disk (1-3) corresponds,
Uniformly distributed two the second bolts hole (1-5-2), each step tooth between two neighboring second cooling air recirculation hole (1-5-1)
2N the second bolts hole (1-5-2) on sealing ring (1-5) and 2N the first bolt hole (1- on each rotor disk (1-3)
It 3-2) corresponds, six step tooth sealing rings (1-5) are connect by long draw bolt (1-4) with rotor disk (1-3).
3. a kind of helium turbine connection structure of fast demountable according to claim 1 or 2, it is characterised in that: turbine
Rotor (1) further includes six movable vane blade units, and each movable vane blade unit includes several movable vane pieces (1-6), the root of each movable vane piece
Portion is equipped with tenon tooth, circumferentially uniformly distributed multiple tongue-and-groove (1-3- matched with tenon tooth on the excircle of each rotor disk (1-3)
3), movable vane piece is connect by mutually matched tenon tooth and tongue-and-groove (1-3-3) with rotor disk (1-3).
4. a kind of helium turbine connection structure of fast demountable according to claim 3, it is characterised in that: stators
(2) further include six retaining rings (2-3), be equipped with one in six stator guide vane rings (2-2) between two neighboring stator guide vane ring (2-2)
A retaining ring (2-3), outside, which goes out, is equipped with a retaining ring (2-3) between steam turbine casket (4) and stator guide vane ring (2-2) adjacent thereto,
Six retaining rings (2-3) are sequentially arranged on the inner cylinder face of turbine casing (2-1), six retaining rings (2-3) and six movable vane piece lists
Member corresponds, and the leaf-teeth (1-6-1) of end movable vane piece (1-6) of retaining ring (2-3) and movable vane blade unit, which seal, to be cooperated.
5. a kind of helium turbine connection structure of fast demountable according to claim 4, it is characterised in that: turbine casing
Be uniformly provided with six annular guide vane slots (2-1-1) on the inner periphery of (2-1), the root of each stator guide vane ring (2-2) be equipped with
The annular guide vane boss (2-2-1) that annular guide vane slot (2-1-1) matches, six stator guide vane rings (2-2) pass through mutual cooperation
Annular guide vane slot (2-1-1) and annular guide vane boss (2-2-1) connect with turbine casing (2-1).
6. a kind of helium turbine connection structure of fast demountable according to claim 3, it is characterised in that: turbine casing
Be equipped with an annular retaining ring slot (2-1-2) between two neighboring annular guide vane slot (2-1-1) on (2-1) inner periphery, it is external into
An annular retaining ring slot (2-1-2), each retaining ring are equipped between steam turbine casket (3) and annular guide vane slot (2-1-1) adjacent thereto
The root of (2-3) is equipped with the annular retaining ring boss (2-3-1) matched with annular retaining ring slot (2-1-2), and six retaining rings (2-3) are logical
It crosses mutually matched annular retaining ring slot (2-1-2) and annular retaining ring boss (2-3-1) connect with turbine casing (2-1).
7. a kind of helium turbine connection structure of fast demountable according to claim 6, it is characterised in that: turbine casing
(2-1) includes interior casing (2-A) and outer casing (2-B), and the internal diameter of interior casing (2-A) and outer casing (2-B) is equal, interior casing
The one end of (2-A) is equipped with interior casing connecting flange (2-A-1), and one end of outer casing (2-B) is equipped with the first outer casing connecting flange
One end of (2-B-1), interior casing (2-A) are connected by mutually matched interior casing connecting flange (2-A-1) with the first outer casing
One end of flange (2-B-1) and outer casing (2-B) bolt.
8. a kind of helium turbine connection structure of fast demountable according to claim 7, it is characterised in that: interior casing
The external inside into steam turbine casket (3) of other end insertion of (2-A), the external cylindrical surface of interior casing (2-A) is with external into steam turbine casket (3)
Inner cylinder face clearance fit.
9. a kind of helium turbine connection structure of fast demountable according to claim 8, it is characterised in that: outer casing
The other end of (2-B) is equipped with for going out the second outer casing connecting flange (2-B-2) that steam turbine casket (4) are connect with outside.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811625049.0A CN109404049B (en) | 2018-12-28 | 2018-12-28 | Helium turbine connecting structure capable of being quickly disassembled and assembled |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811625049.0A CN109404049B (en) | 2018-12-28 | 2018-12-28 | Helium turbine connecting structure capable of being quickly disassembled and assembled |
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| CN109404049B CN109404049B (en) | 2024-04-09 |
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Cited By (2)
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| CN109798153A (en) * | 2019-03-28 | 2019-05-24 | 中国船舶重工集团公司第七0三研究所 | A kind of cooling structure applied to marine gas turbine wheel disk of turbine |
| CN114882784A (en) * | 2022-04-14 | 2022-08-09 | 西北工业大学 | Assembly high-pressure turbine teaching model and method for bearing force by using turbine guider |
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| CN109404049B (en) | 2024-04-09 |
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