CN207568659U - A kind of steam turbine adjustable vane formula nozzle sets structure - Google Patents
A kind of steam turbine adjustable vane formula nozzle sets structure Download PDFInfo
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- CN207568659U CN207568659U CN201721111611.9U CN201721111611U CN207568659U CN 207568659 U CN207568659 U CN 207568659U CN 201721111611 U CN201721111611 U CN 201721111611U CN 207568659 U CN207568659 U CN 207568659U
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- nozzle sets
- adjustable vane
- spherical surface
- steam turbine
- surface body
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Abstract
A kind of steam turbine adjustable vane formula nozzle sets structure, including nozzle sets outer shroud, nozzle sets inner ring, adjustable vane, rocker structure, linkage, axle sleeve, nut, positioning pin, spherical surface body.The variation of adjustable vane setting angle is driven by rocker structure, and then realizes the change of nozzle sets flow area, the change of nozzle sets flow area causes the quantity of steam into unit to change, and then realize the effect of power regulation.
Description
Technical field
The utility model is applied in the new machine operation of steam turbine or reducing energy consumption project of different capabilities.
Background technology
Since electric power cannot store, power grid need to be according to the variation constantly regulate of external load, and then power generation turbine group
Power must at any time be adjusted with the variation of network load.Steam Turbine power regulation enters steamer generally by adjusting
The quantity of steam of machine is realized, and enters the adjusting of the quantity of steam of steam turbine mainly by changing nozzle sets flow area and nozzle
The size of pressure is realized before group.Traditional Steam Turhine Adjustment mechanism is generally respectively arranged a stop valve in high pressure cylinder both sides
With 2 regulating valves, each regulating valve controls an independent nozzle sets segmental arc, nozzle is controlled by controlling to adjust the aperture of valve
Pressure before group flow area and nozzle sets, to reach control into the quantity of steam of nozzle sets, so as to fulfill the power of Steam Turbine
It adjusts.But this method has the shortcoming as follows：1）Even if unit regulating valve standard-sized sheet, unit remain as partial admission, partial admission
The presence of loss causes unit governing stage efficiency low, and unit economy declines；2）If in order to increase nozzle sets flow area
It needs to increase control valve opening, but the cycle efficieny of unit reduces in this way, unit economy is poor.
Invention content
A kind of steam turbine adjustable vane formula nozzle sets structure is invented, changing nozzle sets by regulation blade setting angle leads to
Flow area, the change of nozzle sets flow area cause the quantity of steam into unit to change, and then realize the work of power regulation
With.
A kind of steam turbine adjustable vane formula nozzle sets structure, including nozzle sets outer shroud, nozzle sets inner ring, adjustable leaf
Piece, rocker structure, linkage and appurtenances.Nozzle sets outer shroud and nozzle sets inner ring week are evenly arranged N number of journal hole, phase
N adjustable vane of the processing answered.Adjustable vane quantity N is determined by composite factors such as power, the rate of load condensates of different units.Often
Journal structure is processed into a adjustable vane lower part, and top is machined with threaded elongation rod structure, and lower part axle journal is assemblied in spray
In the corresponding journal hole of mouth group inner ring, after upper extended bar is stretched out from the corresponding journal hole of nozzle sets outer shroud, axle sleeve is mounted in
After in elongation bar, one end of rocker structure is sleeved in the elongation bar of axle sleeve upper end exposing, is tightened on the wand, engageable with nut
To fix this sleeve assembly.This kind of structure can effectively prevent steam from axis while ensureing that adjustable vane is freely rotated
The leakage of neck bore.There are one spherical surface body, spherical surface body is embedded in by positioning pin in linkage for the other end welding of rocker structure,
Spherical surface body can be freely rotated in linkage, and the rotation of spherical surface body drives adjustable vane to rotate by rocking lever, adjustable
The rotation of section blade changes the setting angle of blade, and so as to change nozzle sets flow area, nozzle sets flow area changes
Becoming causes the quantity of steam into unit to change, and then realizes the effect of power regulation.
The beneficial effects of the utility model are to change the setting angle of adjustable vane by rocker structure, and then change
Nozzle sets flow area, the change of nozzle sets flow area leads to the change into steam-turbine amount, and then realizes steam turbine
Group power regulation.The mechanism can ensure the nozzle sets full admission under any operating mode, without displacement loss, due to unit
It realizes full admission, makes that governing stage movable vane is uniform into vapour, and working environment substantially improves, thermal stress is reduced, and is decreased simultaneously
The probability that steam flow excitation occurs；Simultaneously as nozzle sets flow area can be adjusted at any time, it is ensured that higher nozzle sets are into vapour
Pressure improves unit cycle efficieny, and unit economy improves.In short, the program improves while power regulation is realized
The economy of unit operation also improves the security reliability of unit operation.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the utility model structure diagram.
1. nozzle sets outer shroud in figure, 2. nozzle sets inner ring, 3. adjustable vanes, 4. axle sleeves, 5. nuts, 6. rocker structures,
7. linkage, 8. positioning pins, 9. spherical surface bodies.
Specific embodiment
In the embodiment shown in fig. 1, according to layout design size, the common N of each component that above-mentioned number is 1-14 is machined
Set, every two adjustable vanes（3）Between and its with nozzle sets outer shroud（1）With nozzle sets inner ring（2）End wall between form one
A steam channel, as all steam channel areas and nozzle sets flow area.
It is assembled after the component processing is complete, specific assembling mode is as follows：By each adjustable vane（3）Lower part axis
Neck is sequentially loaded into nozzle sets inner ring（2）Corresponding journal hole in, by adjustable vane（3）Upper extended bar from nozzle sets outer shroud
（1）Journal hole in stretch out, by axle sleeve（4）Mounted in adjustable vane（3）Elongation bar top, by rocker structure（6）One end
It is sleeved on axle sleeve（4）The adjustable vane on top（3）Elongation bar on, then by nut（5）It is tightened in adjustable vane（3）Stretch
To fix this sleeve assembly on the screw thread of stock.Rocker structure（6）Other end welding there are one spherical surface body（9）, spherical surface body（9）
Pass through positioning pin（8）It is embedded in linkage（7）It is interior, spherical surface body（9）It can be in linkage（7）It is inside freely rotated, spherical surface body
（9）Rotation pass through rocker structure（6）Drive adjustable vane（3）Rotation, and then change adjustable vane（3）Established angle
Degree so as to change nozzle sets flow area, realizes the adjusting of throttle flow and then realizes power regulation effect.
Specifically, the adjustable vane formula nozzle sets structure can realize nozzle sets full admission under any operating mode,
The displacement loss of governing stage is avoided, while improves nozzle sets initial steam pressure, is reached and is improved governing stage efficiency and then carry
The purpose of high complete machine economy.Since it realizes governing stage full admission, the working environment of governing stage movable vane can be significantly improved,
Improve the security reliability of unit operation.
Claims (2)
1. a kind of steam turbine adjustable vane formula nozzle sets structure, including nozzle sets outer shroud, nozzle sets inner ring, adjustable vane,
Journal structure is processed into rocker structure, linkage, axle sleeve, nut, positioning pin, spherical surface body, each adjustable vane lower part, on
Portion is machined with threaded elongation rod structure, and lower part axle journal is assemblied in the corresponding journal hole of nozzle sets inner ring, upper extended bar
After being stretched out from the corresponding journal hole of nozzle sets outer shroud, after axle sleeve is filled on the wand, engageable, one end of rocker structure is sleeved on
In the elongation bar that axle sleeve upper end is exposed, tightened on the wand, engageable to fix this sleeve assembly, the other end of rocker structure with nut
Spherical surface body that there are one welding, spherical surface body are embedded in by positioning pin in linkage.
2. steam turbine adjustable vane formula nozzle sets structure according to claim 1, it is characterized in that：The spherical surface body can be with
It is freely rotated in linkage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721111611.9U CN207568659U (en) | 2017-09-01 | 2017-09-01 | A kind of steam turbine adjustable vane formula nozzle sets structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721111611.9U CN207568659U (en) | 2017-09-01 | 2017-09-01 | A kind of steam turbine adjustable vane formula nozzle sets structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207568659U true CN207568659U (en) | 2018-07-03 |
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ID=62698257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721111611.9U Active CN207568659U (en) | 2017-09-01 | 2017-09-01 | A kind of steam turbine adjustable vane formula nozzle sets structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207568659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030111A (en) * | 2019-04-04 | 2019-07-19 | 中国航发沈阳发动机研究所 | A kind of variable cycle engine core engine driving fan level structure |
-
2017
- 2017-09-01 CN CN201721111611.9U patent/CN207568659U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030111A (en) * | 2019-04-04 | 2019-07-19 | 中国航发沈阳发动机研究所 | A kind of variable cycle engine core engine driving fan level structure |
| CN110030111B (en) * | 2019-04-04 | 2022-02-18 | 中国航发沈阳发动机研究所 | Variable cycle engine core machine driving fan level structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100044 18th floor, Fangyuan building, No.56, Zhongguancun South Street, Haidian District, Beijing Patentee after: Beijing Guoneng Longwei Power Generation Technology Co.,Ltd. Address before: 100044 18th floor, Fangyuan building, No.56, Zhongguancun South Street, Haidian District, Beijing Patentee before: BEIJING LONGWEI POWER GENERATION TECHNOLOGY Co.,Ltd. |