CN109751089A - A kind of centripetal steam turbine adjustable nozzle - Google Patents
A kind of centripetal steam turbine adjustable nozzle Download PDFInfo
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- CN109751089A CN109751089A CN201711067256.4A CN201711067256A CN109751089A CN 109751089 A CN109751089 A CN 109751089A CN 201711067256 A CN201711067256 A CN 201711067256A CN 109751089 A CN109751089 A CN 109751089A
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Abstract
The invention discloses a kind of centripetal steam turbine adjustable nozzles, including steam turbine spiral case, adjustable nozzle leaf grating, regulating mechanism and turbine rotor；Multiple nozzle vanes that adjustable nozzle leaf grating is evenly arranged by nozzle mounting disc and circumferentially are constituted, and nozzle mounting disc is fixed with steam turbine spiral case；Regulating mechanism is installed relative to the other side of nozzle vane in nozzle mounting disc, regulating mechanism is made of adjusting ring, finger, pin and driving mechanism；Wherein finger is fixed on nozzle vane close to the position of trailing edge and is nested in adjusting circular slide way, and pin and nozzle mounting disc are fixed, and passes through nozzle vane close to the location hole of edge；Driving mechanism is fixed with steam turbine spiral case, and is driven by gear and adjusted ring rotation.The present invention can make centripetal steam turbine charge flow rate when deviateing design discharge, still maintain high operational efficiency, to adapt to the variation of flow when Variable Conditions of Steam Turbine, realize preferable controllability by adjusting nozzle established angle.
Description
Technical field
The invention belongs to the technical fields of turbomachine and power-equipment.In particular it relates to a kind of radial inflow vapour
Turbine adjustable nozzle.
Background technique
As country has worked out the policy for the control air pollution being increasingly stringenter, miscellaneous highly energy-consuming coal-fired industry
Boiler is urgently subject to transformation and upgrade.These boilers are widely distributed in the industries such as papermaking, printing and dyeing, weaving, chemical industry, petroleum, are made a living
Production process provides steam, and average evaporation capacity is only about 11 tphs, and actual operating efficiency only has 65% or so.In many situations
Steam caused by lower boiler needs to carry out pressure and temperature reducing to meet downstream production requirement, so that the more high-grade energy of high steam
Amount is not utilized and is directly down to lower pressure, forms serious waste.
It is a kind of to significantly improve energy utilization rate and generate good economical for the transformation and upgrade demand of above-mentioned Industrial Boiler
The cogeneration of heat and power mode of benefit is the steam by Industrial Boiler generation after back pressure turbine generates electricity, then the back needed with user
Pressure is delivered to downstream production process.Current such back pressure turbine is mostly multiatage axial flow structure, structure and high-power machine
Type is similar, and since the evaporation capacity of Industrial Boiler and corresponding generated energy are lower, this kind of type per kilowatt manufacturing cost is higher.This
Outside, usually there is larger fluctuation in all kinds of production process middle and lower reaches steam consumptions, to realize that the corresponding of steam turbine flow is adjusted, axis stream
The formula back pressure turbine first order is often governing stage, and the stage efficiency is lower, to limit the overall operation of back pressure turbine
Efficiency.
Other than axial back pressure turbine, another structure is relatively simple, the lower mode of manufacturing cost be using to
Heart back pressure turbine, machine volume is small, and mounting arrangements are flexible, and construction work amount is small.But since centripetal steam turbine is mostly single
The design of level structure, nozzle and impeller moulding is all based on design point parameter.When gas consumption fluctuates, adaptability is poor.
Such as change flow by the way of the throttling of inlet adjusting valve, but can be caused due to the decompression of valve steam acting ability substantially under
Drop, influences steam turbine whole efficiency.Therefore, cooperate this cogeneration of heat and power side of Industrial Boiler to the centripetal back pressure turbine of realization
The high efficient and reliable of formula, which runs and has, is widely popularized meaning, it is necessary to develop new centripetal back pressure turbine flow adjusting side
Formula, so that when gas consumption fluctuates when downstream, steam turbine can adapt in time in the case where keeping turbine speed constant
Changes in flow rate is simultaneously still able to maintain higher overall operation efficiency.
Summary of the invention
The present invention provides a kind of centripetal steam turbine adjustable nozzle, and the purpose is to be adjusted by changing setting angle of nozzle vane
Whole area of nozzle throat, to realize that the flow of centripetal steam turbine adjusts and keeps the higher operational efficiency of steam turbine.
To achieve the goals above, the technical scheme adopted by the invention is as follows: centripetal steam turbine adjustable nozzle of the invention,
Including steam turbine spiral case, adjustable nozzle leaf grating, regulating mechanism and turbine rotor；Adjustable nozzle leaf grating by nozzle mounting disc and
The multiple nozzle vanes being circumferentially evenly arranged are constituted, and nozzle mounting disc is fixed with steam turbine spiral case；It is opposite in nozzle mounting disc
Regulating mechanism is installed in the other side of nozzle vane, regulating mechanism is made of adjusting ring, finger, pin and driving mechanism；Its
Middle finger is fixed on nozzle vane close to the position of trailing edge and is nested in adjusting sliding slot, and pin and nozzle mounting disc are fixed, and
Across nozzle vane close to the location hole of edge；Driving mechanism is fixed with steam turbine spiral case, and adjusting ring is driven by gear
Rotation；Each nozzle vane is fixed by pin and nozzle mounting disc, and can be rotated around pin；Finger and the adjusting for adjusting ring
Sliding slot constitutes the pair that rubs, and driving mechanism adjusts ring by gear driving and rotates, and after adjusting ring rotates, is dialled by adjusting sliding slot driving
Pin and nozzle vane are rotated together about pin, to realize the mesh for adjusting nozzle vane relative to tangent to periphery direction established angle
's.
There are minimum and maximum apertures for the adjustable nozzle leaf grating；The minimum and maximum aperture of the adjustable nozzle leaf grating
Respectively correspond maximum value and minimum value of the nozzle vane relative to tangent to periphery direction established angle；The adjustable nozzle leaf grating is most
Under big and minimum aperture state, finger should be located at the end positions for adjusting sliding slot.
The adjustable nozzle leaf grating under maximum opening, trailing edge position with respect to centripetal steam turbine axle center diameter not
Less than 1.015 times of turbine rotor inlet diameter, to guarantee to have enough gaps between nozzle and impeller；The adjustable nozzle
Under maximum opening, exhaust of the leading edge locus with respect to the diameter in centripetal steam turbine axle center no more than steam turbine spiral case goes out leaf grating
Diameter at mouthful, not will receive the blocking of steam turbine spiral case to guarantee nozzle vane when rotated.
When the adjusting turns over certain angle around centripetal steam turbine axle center, nozzle leaf is driven by adjusting sliding slot
Piece makes nozzle vane also go to another angle relative to the established angle in tangent to periphery direction；The setting angle of nozzle vane
It is linear relationship between the angle that variable quantity and adjusting ring turn over.
The described adjusting sliding slot for adjusting ring and there is arc, finger be nested in adjust in sliding slot and when being rotated around pin by
Adjust the limitation of sliding slot shape and position；The quantity of the adjusting sliding slot is identical as the quantity of nozzle vane, can drive all
Nozzle vane changes established angle jointly, each adjusting sliding slot relative to steam turbine axle center be formed by angular range less than 360 °/
Z, Z are the quantity of nozzle vane.
Key of the invention is to determine the shape for adjusting sliding slot and its position on adjusting ring.According to adjustment structure
Working principle, the width for adjusting sliding slot is not less than the diameter of finger, between having enough when guaranteeing that finger moves in adjusting sliding slot
Gap will not be stuck.The centrode for adjusting sliding slot then passes through finger and is formed by when rotating around pin relative to adjusting ring
Motion track determines, this track can by the variable quantity of setting angle of nozzle vane, the angle for adjusting ring rotation, pin center
Away from determining, circular is as follows for center between distance and finger and pin away from steam turbine axle center:
Wherein, Rc is the distance between pin center and steam turbine axle center, and center of the L between finger and pin is away from β 0 is can
Adjust nozzle blade cascade in maximum opening, the angle of the line of centres of finger and pin and the formation of tangent to periphery direction.γ is adjustable
Nozzle blade cascade is under a certain aperture state, reduction amount when the established angle of nozzle vane is compared to maximum opening, α thus aperture when
The angle turned over when adjusting ring compared to maximum opening, R are that the distance between finger center and steam turbine axle center, φ are at this time
The angle turned over when finger center is compared to maximum opening.When γ value determines, because α and γ is linear relationship, then α value is also true
Fixed, R and φ value can be calculated by above two formula.From the maximum opening of adjustable nozzle leaf grating to minimum aperture, for each
The γ value of a determination can all calculate corresponding R and φ value, thus obtain using steam turbine axle center as the polar coordinate system of origin
The corresponding relationship of lower R=f (φ), as finger are formed by motion track relative to ring is adjusted, so that it is determined that adjusting sliding slot
Centrode.
The present invention by adopting the above technical scheme, can continuously adjust the installation of nozzle vane between minimum and maximum aperture
Angle, thus change the throat opening area of nozzle, so that in the case where throttle (steam) temperature and constant pressure, the flow of centripetal steam turbine
It can be realized continuously adjusting from maximum stream flow to minimum discharge, to adapt to the fluctuation of downstream throughput；Due to adjusting ring
Rotational angle and the variable quantity of setting angle of nozzle vane be set as linear relationship, external control mechanism can be simply and reliablely
Setting angle of nozzle vane is adjusted according to demand, simplifies control law；In addition, centripetal steam turbine flow is by nozzle established angle
It adjusts, cooperates nozzle blade design appropriate, nozzle and impeller can be made all to keep more efficient in a wider flow range
Rate, it is no longer necessary to change flow in such a way that steam turbine air inlet adjustment valve depressurizes, avoids the loss of steam acting ability,
Therefore higher steam turbine overall operation efficiency can be kept within the scope of minimum discharge to maximum stream flow.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention, can be used as the attached drawing of abstract of description；
Fig. 2 is cross-sectional view of the Fig. 1 along Section A-A；
Fig. 3 is nozzle vane part cross-sectional view of the invention；
Fig. 4 is the schematic diagram of nozzle blade cascade of the invention in maximum opening and minimum aperture；
Fig. 5 is regulating mechanism schematic diagram of the invention；
Fig. 6 is regulating mechanism and nozzle vane movement mechanism schematic diagram of the invention.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of
Illustrate, to help those skilled in the art to have more complete, accurate and deep reason to inventive concept of the invention, technical solution
Solution.
The overall structure diagram of centripetal steam turbine adjustable nozzle of the present invention is as shown in Figure 1, include steam turbine
Spiral case (1), adjustable nozzle leaf grating (2), regulating mechanism (3) and turbine rotor (4), the wherein cross-sectional view in the section 1-1 such as Fig. 2 institute
Show.Multiple nozzle vanes (6) that adjustable nozzle leaf grating (2) is evenly arranged by nozzle mounting disc (5) and circumferentially are constituted, nozzle
Mounting disc (5) and steam turbine spiral case (1) are fixed.Tune is installed relative to the other side of nozzle vane (6) in nozzle mounting disc (5)
It saves mechanism (3), regulating mechanism (3) is made of adjusting ring (7), finger (8), pin (9) and driving mechanism (10).Wherein finger
(8) nozzle vane (6) are fixed on close to the position of trailing edge and are nested in adjusting sliding slot (7a), pin (9) and nozzle mounting disc
(5) fixed, and nozzle vane (6) are passed through close to the location hole (9a) of edge；Driving mechanism (10) and steam turbine spiral case (1) are solid
It is fixed, it is driven by gear and adjusts ring (7) rotation.Each nozzle vane (6) is fixed by pin (9) and nozzle mounting disc (5),
And it can be rotated around pin (9).Finger (8) and the adjusting sliding slot (7a) for adjusting ring (7) constitute friction pair, and driving mechanism (10) is logical
It crosses gear driving and adjusts ring (7) rotation, then by adjusting sliding slot (7a) driving finger (8) and nozzle vane (6) together about pin (9)
Rotation.
As shown in figure 4, there are minimum and maximum apertures for adjustable nozzle leaf grating (2), and it is opposite to respectively correspond nozzle vane (6)
In the maximum value and minimum value of tangent to periphery direction established angle.Adjustable nozzle leaf grating (2) is dialled under minimum and maximum aperture state
Pin (8) should be located at the end positions for adjusting sliding slot (7a).
In Fig. 4, for adjustable nozzle leaf grating (2) in maximum opening, the trailing edge position of nozzle vane (6) is with respect to radial inflow steamer
The diameter of the arbor heart is not less than 1.015 times of turbine rotor (4) inlet diameter, between guaranteeing to have between nozzle and impeller enough
Gap prevents impeller from scratching when rotating with nozzle vane.Meanwhile adjustable nozzle leaf grating (2) is under maximum opening, nozzle vane
(6) leading edge locus is not more than diameter at the air exit of steam turbine spiral case (1) with respect to the diameter in centripetal steam turbine axle center, with
Guarantee that nozzle vane (6) not will receive the blocking of steam turbine spiral case (1) when rotated.
As shown in figure 5, adjusting the adjusting sliding slot (7a) that ring (7) have arc, finger (8), which is nested in, to be adjusted in sliding slot (7a)
And it is limited when being rotated around pin (9) by adjusting sliding slot (7a) shape and position.Ring (7) are adjusted around centripetal steam turbine axle center
When turning over certain angle, is rotated, made around pin (9) together together with nozzle vane (6) by adjusting sliding slot (7a) driving finger (8)
Nozzle vane (6) goes to another angle relative to the established angle in tangent to periphery direction.The variable quantity of nozzle vane (6) established angle with
It adjusts between the angle that ring (7) turn over as linear relationship.Adjust quantity and nozzle vane (6) of the adjusting sliding slot (7a) of ring (7)
Quantity is identical, all nozzle vanes (6) can be driven to change established angle jointly, and each adjusting sliding slot is relative to steam turbine axle center
It is the quantity of nozzle vane (6) that angular range, which is formed by, less than 360 °/Z, Z.
Key of the invention is to determine the shape for adjusting sliding slot (7a) and its position in adjusting ring (7).According to Fig. 5
Shown in adjustment structure (3) working principle, adjust sliding slot (7a) width be not less than finger (8) diameter, to guarantee finger
(8) there are enough gaps when moving in adjusting sliding slot (7a), will not be stuck.The centrode for adjusting sliding slot (7a), which then passes through, to be dialled
Pin (8) is formed by motion track relative to adjusting ring (7) when rotating around pin (9) to determine.As shown in fig. 6, this rail
Mark can by nozzle vane (6) established angle variable quantity, adjust ring (7) rotation angle, pin (9) center away from steam turbine axle center
Distance and finger (8) and pin (9) between center away from determining, circular is as follows:
In Fig. 6, A and C respectively indicate the center of adjustable nozzle leaf grating (2) finger (8) and pin (9) in maximum opening.
Rc is the distance between pin (9) center and steam turbine axle center, and L is the distance between finger (8) center and pin (9) center, β
0 is adjustable nozzle leaf grating (2) in maximum opening, what the line of centres of finger (8) and pin (9) was formed with tangent to periphery direction
Angle.When adjustable nozzle leaf grating (2) by maximum opening go to it is a certain compared with small guide vane when, the center of finger (8) and pin (9)
The A' and C' in Fig. 6 are moved to respectively.γ is under this aperture state, when the established angle of nozzle vane (6) is compared to maximum opening
Reduction amount, due in Fig. 6 A'C' line i.e. illustrate blade installation direction, γ=β 0- β in figure.α thus aperture when
The angle that is turned over when adjusting ring (7) compared to maximum opening, R be at this time between finger (8) center and steam turbine axle center away from
From, φ by finger (8) center compared to maximum opening when the angle that turns over.When γ value determines, because α and γ is linear closes
System, then α value also determines, R and φ value can be calculated by above two formula.From the maximum opening of adjustable nozzle leaf grating (2) to most
Small guide vane can all calculate corresponding R and φ value, thus obtain with steam turbine axle center for the γ value that each is determined
For the corresponding relationship of R=f (φ) under the polar coordinate system of origin, as finger (8) is formed by moving rail relative to ring (7) are adjusted
Mark, so that it is determined that the centrode of adjusting sliding slot (7a).
Case is embodied:
Certain radial inflow back pressure turbine, design steam flow are 23 t/h, 2.35 MPa of admission pressure, 400 DEG C of intake air temperature, are arranged
0.6 MPa of atmospheric pressure, delivery temperature are about 265 DEG C.The nozzle of steam turbine number of blade is 17, and impeller blade number is 13, wheel speed
30000 rpm, the nozzle vane established angle tangential relative to circumference is about 24 ° under design point.
To guarantee that the range of flow of steam turbine meets actual demand, using adjustable nozzle of the present invention.Shape will be designed
Nozzle setting angle under state is set as 0 °, and the direction that nozzle nozzle vane is reduced relative to the tangentially mounted angle of circumference is (i.e.
Aperture reduces) it is defined as the positive direction of angle adjustment.In view of the diameter of steam turbine spiral case and impeller limits, nozzle setting angle
Adjusting section be set as -2 ° (maximum openings) to+6 ° (minimum aperture), totally 8 ° of adjustable ranges, spray under design point in this way
Mouth blade opening, which can reduce, can also continue to increase, and steam turbine flow is enable to be adjusted as needed.Adjust the adjusting of ring
Sliding slot quantity is identical as nozzle vane number, and rotational angle range is set as 16 °, that is, keeps and nozzle setting angle variable quantity 1:
2 linear relationship.Pin center is located at away from about 30% chord length of nozzle vane leading edge, and finger is away from about 30% string of nozzle vane trailing edge
It is long.
According to the calculating to Design of Steam Turbine point, at design discharge (23 t/h), steam turbine output power is about 2027
KW, efficiency reach 90.7%.By adjustable nozzle assembly, when changing nozzle established angle to maximum opening (- 2 °), by again right
The calculating of steam turbine obtains steam turbine flow at this time and reaches 26.4 t/h (the 115% of design discharge), and power is 2207 kW, effect
Rate is 89.4%.When nozzle established angle is adjusted to+6 ° under minimum aperture, steam turbine flow is then down to 11.0 t/h, and power is
906 kW, efficiency 84.1%.By available to calculating separately for each nozzle setting angle, from -2 ° to+6 °, steam turbine from
The variation of maximum stream flow to minimum discharge keeps linear relationship with the variation of nozzle setting angle substantially.When steam turbine flow is down to
11.0 t/h, i.e., design discharge 48% when, be still able to maintain 84.1% overall operation efficiency.In this way, described in through the invention
Adjustable nozzle assembly, in the case where inlet air conditions are constant, which can make to flow by changing nozzle established angle
Amount is higher than design point, can also be down to 50% of design discharge or so, and operational efficiency is minimum only declines 6% or so, still has higher
Efficiency.This range of flow has substantially met the requirement that downstream production process fluctuates steam consumption, and protects in full flow range
Steam turbine efficient operation is held, is avoided because using air inlet adjustment valve to throttle, leading to steam turbine, whole efficiency is sharply under small flow
The case where reduction, makes centripetal steam turbine generate good economic benefit in actual operation.
The present invention is exemplarily described in conjunction with attached drawing above, it is clear that specific implementation of the invention is not by above-mentioned side
The limitation of formula, as long as using the improvement for the various unsubstantialities that conception and technical scheme of the invention carry out, or not improved
It is within the scope of the present invention the conception and technical scheme of the invention are directly applied to other occasions.
Claims (6)
1. a kind of centripetal steam turbine adjustable nozzle, including steam turbine spiral case (1), adjustable nozzle leaf grating (2), regulating mechanism (3)
With turbine rotor (4), it is characterised in that: what adjustable nozzle leaf grating (2) was evenly arranged by nozzle mounting disc (5) and circumferentially
Multiple nozzle vanes (6) are constituted, and nozzle mounting disc (5) and steam turbine spiral case (1) are fixed；In nozzle mounting disc (5) relative to spray
The other side of mouth blade (6) is equipped with regulating mechanism (3), and regulating mechanism (3) is by adjusting ring (7), finger (8), pin (9) and drives
Motivation structure (10) is constituted；Wherein finger (8) is fixed on nozzle vane (6) close to the position of trailing edge and is nested in adjusting sliding slot (7a)
In, pin (9) and nozzle mounting disc (5) are fixed, and pass through nozzle vane (6) close to the location hole (9a) of edge；Driving machine
Structure (10) and steam turbine spiral case (1) are fixed, are driven by gear and adjust ring (7) rotation；Each nozzle vane (6) passes through pin
(9) fixed with nozzle mounting disc (5), and can be rotated around pin (9)；Finger (8) and adjusting sliding slot (7a) structure for adjusting ring (7)
Secondary at friction, driving mechanism (10) is driven by gear adjusts ring (7) rotation, after adjusting ring (7) rotation, by adjusting sliding slot
(7a) drives finger (8) and nozzle vane (6) to rotate together about pin (9), adjusts nozzle vane (6) relative to circle to realize
The purpose of all tangential direction established angles.
2. centripetal steam turbine adjustable nozzle according to claim 1, it is characterised in that: the adjustable nozzle leaf grating
(2) there are minimum and maximum apertures；The minimum and maximum aperture of the adjustable nozzle leaf grating (2) respectively corresponds nozzle vane (6)
Maximum value and minimum value relative to tangent to periphery direction established angle；The minimum and maximum aperture of the adjustable nozzle leaf grating (2)
Under state, finger (8) should be located at the end positions for adjusting sliding slot (7a).
3. centripetal steam turbine adjustable nozzle according to claim 2, it is characterised in that: the adjustable nozzle leaf grating
(2) under maximum opening, trailing edge position is straight not less than turbine rotor (4) import with respect to the diameter in centripetal steam turbine axle center
1.015 times of diameter, to guarantee to have enough gaps between nozzle and impeller；The adjustable nozzle leaf grating (2) under maximum opening,
Its leading edge locus is not more than diameter at the air exit of steam turbine spiral case with respect to the diameter in centripetal steam turbine axle center, to guarantee to spray
Mouth blade not will receive the blocking of steam turbine spiral case when rotated.
4. centripetal steam turbine adjustable nozzle according to claim 1, it is characterised in that: the adjusting ring (7) around to
When core type steam turbine axle center turns over certain angle, by adjusting sliding slot (7a) driving nozzle vane (6), make nozzle vane (6) phase
Another angle is also gone to for the established angle in tangent to periphery direction；The variable quantity of described nozzle vane (6) established angle and adjusting
It is linear relationship between the angle that ring (7) turns over.
5. centripetal steam turbine adjustable nozzle according to claim 1, it is characterised in that: the adjusting ring (7) has
The adjusting sliding slot (7a) of arc, finger (8), which is nested in, to be adjusted in sliding slot (7a) and when rotating around pin (9) by adjusting sliding slot
The limitation of (7a) shape and position；The quantity of the adjusting sliding slot (7a) is identical as the quantity of nozzle vane (6), can drive institute
There is nozzle vane (6) to change established angle jointly, each adjusting sliding slot is formed by angular range relative to steam turbine axle center and is less than
360 °/Z, Z is the quantity of nozzle vane (6).
6. centripetal steam turbine adjustable nozzle according to claim 1, it is characterised in that: the adjusting sliding slot (7a)
Width is not less than the diameter of finger (8), to have enough gaps when guaranteeing that finger (8) moves in adjusting sliding slot (7a)；It adjusts and slides
The centrode of slot (7a) and its adjust ring (7) on position then pass through finger (8) around pin (9) rotate when relative to tune
Section ring (7) is formed by motion track to determine；This track is turned by the variable quantity of nozzle vane (6) established angle, adjusting ring (7)
Center between distance and finger (8) and pin (9) of the center of dynamic angle, pin (9) away from steam turbine axle center is true away from coming
Fixed, circular is as follows:
Wherein, Rc is the distance between pin (9) center and steam turbine axle center, center of the L between finger (8) and pin (9)
Away from β 0 is adjustable nozzle leaf grating (2) in maximum opening, the line of centres and tangent to periphery direction shape of finger (8) and pin (9)
At angle；γ is adjustable nozzle leaf grating (2) under a certain aperture state, and the established angle of nozzle vane (6) is opened compared to maximum
Reduction amount when spending, α thus aperture when the angle that is turned over when adjusting ring (7) compared to maximum opening, R is finger (8) at this time
The distance between center and steam turbine axle center, φ by finger (8) center compared to maximum opening when the angle that turns over；When γ value
When determining, because α and γ is linear relationship, then α value is also determined, R and φ value can be calculated by above two formula；From adjustable nozzle
The maximum opening of leaf grating (2) can all calculate corresponding R and φ value, in this way for the γ value that each is determined to minimum aperture
The corresponding relationship of R=f (φ) under just having obtained using steam turbine axle center as the polar coordinate system of origin, as finger (8) is relative to adjusting
Ring (7) is formed by motion track, so that it is determined that the centrode of adjusting sliding slot (7a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711067256.4A CN109751089B (en) | 2017-11-03 | 2017-11-03 | Adjustable nozzle of centripetal steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711067256.4A CN109751089B (en) | 2017-11-03 | 2017-11-03 | Adjustable nozzle of centripetal steam turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109751089A true CN109751089A (en) | 2019-05-14 |
| CN109751089B CN109751089B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711067256.4A Active CN109751089B (en) | 2017-11-03 | 2017-11-03 | Adjustable nozzle of centripetal steam turbine |
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| Country | Link |
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| CN (1) | CN109751089B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794809A (en) * | 2020-08-10 | 2020-10-20 | 长兴永能动力科技有限公司 | Adjustable turbine blade for centripetal turbine |
| CN113405800A (en) * | 2021-06-24 | 2021-09-17 | 中国第一汽车股份有限公司 | Exhaust pressure adjusting device of engine |
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| EP1338773A2 (en) * | 1996-04-04 | 2003-08-27 | Nadine Jung | Gas turbine assembly for air conditioning |
| CN101029592A (en) * | 2007-03-14 | 2007-09-05 | 中国兵器工业集团第七0研究所 | Adjusting nozzle louver and adjusting mechanism for turbine pressure booster |
| CN102322298A (en) * | 2011-08-25 | 2012-01-18 | 中国南方航空工业(集团)有限公司 | Turbine guider and turbine |
| CN102900479A (en) * | 2012-10-30 | 2013-01-30 | 北京理工大学 | Variable nozzle turbocharger regulating mechanism integrated on turbine shell |
| US20160032760A1 (en) * | 2014-07-30 | 2016-02-04 | MTU Aero Engines AG | Housing for a gas turbine, aircraft engine, and a process for operating a gas turbine |
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2017
- 2017-11-03 CN CN201711067256.4A patent/CN109751089B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1338773A2 (en) * | 1996-04-04 | 2003-08-27 | Nadine Jung | Gas turbine assembly for air conditioning |
| CN101029592A (en) * | 2007-03-14 | 2007-09-05 | 中国兵器工业集团第七0研究所 | Adjusting nozzle louver and adjusting mechanism for turbine pressure booster |
| CN102322298A (en) * | 2011-08-25 | 2012-01-18 | 中国南方航空工业(集团)有限公司 | Turbine guider and turbine |
| CN102900479A (en) * | 2012-10-30 | 2013-01-30 | 北京理工大学 | Variable nozzle turbocharger regulating mechanism integrated on turbine shell |
| US20160032760A1 (en) * | 2014-07-30 | 2016-02-04 | MTU Aero Engines AG | Housing for a gas turbine, aircraft engine, and a process for operating a gas turbine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794809A (en) * | 2020-08-10 | 2020-10-20 | 长兴永能动力科技有限公司 | Adjustable turbine blade for centripetal turbine |
| CN113405800A (en) * | 2021-06-24 | 2021-09-17 | 中国第一汽车股份有限公司 | Exhaust pressure adjusting device of engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109751089B (en) | 2023-09-19 |
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Address after: 313000 Building 2, South Taihu Youth Science and Technology Entrepreneurship Park, No.1, Chuangye Innovation Avenue, Meishan Town, Changxing County, Huzhou City, Zhejiang Province Patentee after: Changxing Yongneng Power Technology Co.,Ltd. Address before: 313000 Zhejiang Chengneng Intelligent Energy Science and Technology Industrial Park, Meishan Town, Changxing County, Huzhou City Patentee before: CHANGXING YONGNENG POWER TECHNOLOGY Co.,Ltd. |