CN108361075A - Positive-pressure type steam turbine - Google Patents
Positive-pressure type steam turbine Download PDFInfo
- Publication number
- CN108361075A CN108361075A CN201710230566.7A CN201710230566A CN108361075A CN 108361075 A CN108361075 A CN 108361075A CN 201710230566 A CN201710230566 A CN 201710230566A CN 108361075 A CN108361075 A CN 108361075A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- steam turbine
- rotor
- positive
- cylinder
- 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.)
- Pending
Links
- 238000010025 steaming Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000012856 packing Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- F01D1/06—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 radially
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a kind of positive-pressure type steam turbines, by steam turbine cylinder 1, turbine rotor 2, axle envelope 3, form into venthole 5, bearing 4, homophony air valve, draining system etc., multistage nozzles wherein in cylinder body are corresponding with 15 axial position of multi-stage impeller of rotor, and 11 guide vane 18 and 27 of nozzle is all parallel with 2 axis of rotor with impeller movable vane piece 14, to make the thrust of steam form positive-pressure type steam turbine of the positive pure couple without generating axial force to rotor, keep steam turbine mechanical efficiency higher, equipment simpler.The steam turbine structure of the present invention can be used to independent steam turbine, it can also be used for the use that is together in series as the high pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder of steam turbine, multistage nozzles 11 wherein in cylinder body are corresponding with 15 axial position of multi-stage impeller of rotor, and nozzle guide vane piece and impeller movable vane piece are all parallel with rotor axis, so that the thrust of steam is formd positive-pressure type steam turbine of the positive pure couple (approximate) without generating axial force to rotor to produce.
Description
One, technical field
The present invention relates to a kind of steam turbines, and axial force is not generated to turbine rotor in the process more particularly to a kind of acting
Only generate positive pure couple away from steam turbine.
Two, background technology
Steam turbine used in present power plant (such as thermal power plant, nuclear power plant) and other occasions is essentially all to utilize
The thermal energy pushing turbine rotor of steam is converted into mechanical energy and drives electrical power generators, and steam axially passes through during acting
Nozzle ring adjustment air-flow angle pushes step by step and turbine rotor axis is at certain angle of inclination and the movable vane piece of radially installed, from
And rotor is driven to rotate, finally steam exhaust is discharged from the other end of cylinder after acting.Since there is movable vane piece angle of inclination always to exempt from not
Generation axial force, this portion of energy are wasted without generating torque, and steam turbine structure is made to become complicated.
Three, invention content
The purpose of the present invention is to provide one kind not generating turbine rotor during acting axial force and making to set
The higher steam turbine of the standby simpler mechanical efficiency of structure.
In order to achieve the above objectives, the present invention provides a kind of thrust for making steam generation along turbine rotor outer rim and vertical
Rotor is acted in rotor axis, to generate the steam turbine of the positive annular moment of couple to rotor.
The steam turbine by steam turbine cylinder, turbine rotor, axle envelope, into venthole, bearing, stop valve, adjust valve, hydrophobic system
The compositions such as system.The steam turbine cylinder is made of cylinder barrel, fixed nozzle, intermediate bulkhead etc., and wherein cylinder barrel can make interior outer cylinder sheath
Fill (such as the scheming) of monoblock type and upper and lower two halves and (such as figure) form of cylinder and end cap split, between upper and lower two halves cylinder barrel and
It is fixed and (is not drawn into figure) with bolt and nut between cylinder barrel and end cap, both ends are provided with into vapor opening and disengaging vapor pipeline and connect on cylinder barrel
It is logical, wherein in addition to governing stage fixed nozzle and intermediate bulkhead can be made of one formula (as shown in Figure 1) all rings (can loaded on inner wall of cylinder
Be welded and be fixedly mounted) and fixed nozzle be parallel to bore axis, steaming hole endoporus is provided in outer rim and studs with vapour blade (with main shaft
Form packing) intermediate bulkhead and many guide vanes for being circular layout and nozzle closure plate fix to form multistage nozzles room；The vapour
Turbine wheel is by main shaft, movable vane piece, impeller side board group at being provided with the impeller side plate in steaming hole by many movable vane piece compartment of terrain rings
Shape be fixed on the outside of wheel rim and connected firmly with main shaft and (be illustrated as weldering knot) and it is corresponding with nozzle form all Multi-impeller grades, can will also move
Make being coupled of blade and main shaft dismountable, impeller outer edge size make different-diameter formed it is stepped；Turbine rotor
By bearing support rotary, and keeps impeller concentric with steam turbine cylinder and make the corresponding nozzle of impellers at different levels and nozzle stage axial position
Angle direction is adapted with impeller movable vane piece angle direction, and nozzle and impeller passable sizes at different levels are determined by Mechanics Calculation；By into
Venthole, cylinder body both ends axle envelope and intermediate bulkhead packing form vaporium step by step；Homophony steam valve control steam flow to
Control turbine rotor revolution；Cooling water in cylinder body is discharged draining system in time.
When work, steam enters in cylinder body first order nozzle box (governing stage) by spaced apart many annulars by steam inlet pipe
Guide vane adjusts the angle after direction after-blow is done work to the movable vane piece of first order impeller is entered in cylinder by movable vane piece gap, then is passed through
Spacing board outer rim steaming hole enters second level nozzle box and blows second level impeller, and third level nozzle box is entered back into after acting and blows
Three-level impeller ... after the acting of most final stage nozzle box through steam drain until be discharged.
Four, it illustrates
Fig. 1 is the steam turbine axial sectional view of the present invention.
Fig. 2 is the turbine shaft of the present invention to sectional view at air intake.
Fig. 3 is the steam turbine cylinder sectional view of the present invention.
Fig. 4 is the turbine rotor figure of the present invention.
Fig. 5 is the nozzle of steam turbine and intermediate bulkhead figure of the present invention.
Fig. 6 is the steam turbine another kind nozzle figure of the present invention.
Fig. 7 is the Control Stage of Steam Turbine nozzle figure of the present invention.
Five, embodiment
The steam turbine embodiment of the present invention is illustrated below in conjunction with the accompanying drawings.
Steam turbine shown in FIG. 1 by steam turbine cylinder 1, turbine rotor 2, axle envelope 3, bearing 4, form into venthole 5 etc..
Steam turbine cylinder 1 is fixed on base plate 6, and rotor 2 is rotatably supported on base plate 6 by bearing 4 and keeps concentric with cylinder body 1
And keep impeller axial positions at different levels corresponding with the nozzle in cylinder body 1 and nozzle angle direction and impeller movable vane piece angle direction phase
Adapt to, axle envelope 3 be fixed on 1 end cap of cylinder body the main shaft with rotor 2 formed dynamic sealing, and on cylinder body 1 into venthole and in
Spacing board forms multistage steam room.
Fig. 3 is that steam turbine cylinder 1 is made of cylinder cap 8, upper cylinder half 9, lower cylinder 10.Upper cylinder half 9 and the 10 concentric fixation of lower cylinder and and cylinder
Lid 8 with one heart conjunction, be fixedly mounted in cylinder body 1 and (be illustrated as being welded) have it is parallel at certain interval in bore axis (optimum state) and
The multistage nozzles 11 concentric with cylinder barrel, cylinder body 1 can also be that solid-end cylinder fastens built-in nozzle with end cap 8.Cylinder body 1 can also be
Cylinder barrel two closes cylinder barrel up and down with what cylinder cap was integrated.
Turbine rotor 2 shown in Fig. 4 is made of main shaft 12, impeller side plate 13, movable vane piece 14, shaft coupling.Certain amount
Movable vane piece 14 interval be fixed on round 13 outer rim of impeller side plate for being provided with steaming hole and keep through-flow gap and through-flow direction,
The slit aperture of movable vane piece 14 and 13 centerline parallel of main shaft (optimum state), be provided with round 13 endoporus of impeller side plate of venthole with
Main shaft 12 connects firmly.Thus there are many 14 spacer rings of movable vane piece to form multi-stage impeller 15 mounted in 13 outer rim of impeller side plate.(this
Figure is welding structure)
The nozzle and intermediate bulkhead of steam turbine shown in Fig. 5 are to fix guide vane 18 and intermediate bulkhead 16 and nozzle closure plate 17
Semi-circular band partition board nozzle 11 is formed together.Steaming hole is provided in outer rim and endoporus vehicle has annular groove (for filling labyrinth strip)
Intermediate bulkhead 16 is fixed with a certain number of guide vanes 18 and nozzle closure plate 17 and keeps through-flow gap and through-flow direction, guide vane
The gap of piece 18 is preferably parallel with the interior axially bored line of intermediate bulkhead 16.
The nozzle 11 of steam turbine shown in Fig. 6 is another kind without partition board nozzle.It is provided with nozzle orifice plate 22, the nozzle of venthole
Closure plate 20 and interior lining panel 21 are fixed together to form semi-circular nozzle with a certain number of guide vanes 18.It may be alternatively configured a whole set of annular
Nozzle is to correspond to solid-end cylinder.
Governing stage (the 1st grade of nozzle 11) nozzle 25 of steam turbine shown in Fig. 7 is made of guide vane 27, nozzle closure plate 26,
27 annular of a certain number of guide vanes is fixed on two pieces of 26 inner port edges of nozzle closure plate.
The steam turbine structure of the present invention can be used to independent steam turbine, it can also be used to high pressure cylinder, middle pressure as steam turbine
Cylinder, low pressure (LP) cylinder are together in series use, and the wherein multistage nozzles 11 in cylinder body 1 are opposite with 15 axial position of multi-stage impeller of rotor 2
11 angle direction of nozzle is answered to be adapted with 14 angle direction of impeller movable vane piece, and 11 guide vane 18 and 27 of nozzle and impeller 15 are dynamic
Blade 14 is all parallel with 2 axis of rotor, so that the thrust of steam is formd positive pure couple (approximate) to rotor to produce
Positive-pressure type steam turbine without generating axial force.
Claims (5)
1. a kind of positive-pressure type steam turbine by steam turbine cylinder (1), turbine rotor (2), axle envelope (3), into venthole (5), bearing
(4), the compositions such as homophony air valve, draining system, on cylinder body (2) inner wall between the fixed multistage nozzles (11) of annular and nozzle
It is separated with intermediate bulkhead (16)；The fixed a certain number of movable vane pieces (14) of turbine rotor (2) peripheral annual form more
Grade impeller (15) and in the cylinder body (1) and keep rotor (2) axis and cylinder body (1) axis concentric by bearing (4) rotational installation
And nozzle (11) angle direction is adapted with impeller movable vane piece (14) angle direction；Axle envelope (3) on cylinder body (1) and disengaging are installed
Cylinder body (1) and rotor (2) are partitioned into multistage steam room by fixed intermediate bulkhead (16) in steam ports (5) and nozzle at different levels (11)；
It is characterized in that the movable vane piece (14) of the nozzle (11) and rotor (2) in cylinder body (1) is parallel to rotor (2) axis and in axial direction
Upper position is corresponding.
2. positive-pressure type steam turbine according to claim 1, wherein the turbine rotor (2) is by main shaft (12), impeller side
Plate (13), movable vane piece (14), shaft coupling composition, it is characterised in that the movable vane piece (14) parallel with main shaft (12) axis is by being provided with
Steaming hole and impeller side plate (13) annular being fixed together with main shaft (12) is fixed at rotor (2) outer rim.
3. positive-pressure type steam turbine according to claim 1, wherein the nozzle of steam turbine (11) is by guide vane (18), nozzle
Closure plate (17), intermediate bulkhead (16) composition, a certain number of guide vane (18) annulars are fixed at nozzle closure plate (17) inner rim
And it is fixed together with the intermediate bulkhead (16) for being provided with venthole.
4. positive-pressure type steam turbine according to claim 1, wherein the nozzle of steam turbine (11) is by guide vane (18), nozzle
Closure plate (20), nozzle orifice plate (22) composition, a certain number of guide vane (18) annulars are fixed at nozzle closure plate (20) inner rim
And it is fixed together with the nozzle orifice plate (22) for being provided with venthole.
5. positive-pressure type steam turbine according to claim 1, wherein the Control Stage of Steam Turbine nozzle (25) is by guide vane
(27), nozzle closure plate (26) forms, and a certain number of guide vane (27) annulars are fixed at two panels nozzle closure plate (26) inner rim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710230566.7A CN108361075A (en) | 2017-01-27 | 2017-01-27 | Positive-pressure type steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710230566.7A CN108361075A (en) | 2017-01-27 | 2017-01-27 | Positive-pressure type steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108361075A true CN108361075A (en) | 2018-08-03 |
Family
ID=63009841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710230566.7A Pending CN108361075A (en) | 2017-01-27 | 2017-01-27 | Positive-pressure type steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108361075A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578081A (en) * | 2018-11-26 | 2019-04-05 | 天津德恒源科技有限公司 | Novel steam turbine structure |
| CN117569875A (en) * | 2024-01-16 | 2024-02-20 | 济南中科先行燃气轮机科技有限公司 | Structure of gas turbine rotation speed matching VSV rotatable guide vane and adjusting method |
-
2017
- 2017-01-27 CN CN201710230566.7A patent/CN108361075A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578081A (en) * | 2018-11-26 | 2019-04-05 | 天津德恒源科技有限公司 | Novel steam turbine structure |
| CN117569875A (en) * | 2024-01-16 | 2024-02-20 | 济南中科先行燃气轮机科技有限公司 | Structure of gas turbine rotation speed matching VSV rotatable guide vane and adjusting method |
| CN117569875B (en) * | 2024-01-16 | 2024-05-14 | 济南中科先行燃气轮机科技有限公司 | Structure of gas turbine rotation speed matching VSV rotatable guide vane and adjusting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180803 |
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| WD01 | Invention patent application deemed withdrawn after publication |