CN108692913B - A kind of circulating Stator tail generating device - Google Patents
A kind of circulating Stator tail generating device Download PDFInfo
- Publication number
- CN108692913B CN108692913B CN201810360587.5A CN201810360587A CN108692913B CN 108692913 B CN108692913 B CN 108692913B CN 201810360587 A CN201810360587 A CN 201810360587A CN 108692913 B CN108692913 B CN 108692913B
- Authority
- CN
- China
- Prior art keywords
- blade
- driving belt
- vertical driving
- sink
- flume
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of circulating Stator tail generating devices.Including movable vane mechanism and sink component；Sink component includes upper flume, lower flume and two middle sinks；Upper flume and lower flume connect up and down to be communicated, and the two sides between upper flume and lower flume are equipped with the middle sink being arranged symmetrically, as being equipped with stator blade blade in the middle sink of outlet；Movable vane mechanism includes horizontal conveyor belt, upper transmission shaft, vertical driving belt, movable vane blade, lower drive shaft and speed regulating motor；Speed regulating motor is connected through horizontal conveyor belt with upper transmission shaft, and upper transmission shaft is connected through vertical driving belt with lower drive shaft, and each movable vane vane hinge is in vertical driving belt.The present invention realizes tail by the movement of true aerofoil profile, and circulating rotor and stator blade interference phenomenon is more in line in practice with engineering.It is good with versatility, it is easily installed, observes the features such as facilitating.
Description
Technical field
The present invention relates to a kind of liquid stream generating devices of field of energy source power, more particularly, to a kind of circulating sound
Leaf interferes tail generating device.
Background technique
In many turbomachine devices, since there are the relative motion of circulating rotor and stator blade, movable vane blade wake passing meetings
The development of stator blade blade boundary layer flow separation and whirlpool is had an impact, while cutting meeting of the stator blade blade to movable vane blade wake passing
React on movable vane blade flow field nearby.This stator-rotor interaction is studied to the safe and efficient stable operation of turbomachine with important
Meaning.Experimental study is still the essential means studied stator-rotor interaction, it has not available for numerical simulation
Intuitive and accuracy.The experimental provision mainly used at this stage is broadly divided into two classes, and one kind is rotary disc-type, Yi Leishi
Direct acting is reciprocating.These two types of experimental provisions are tested in wind-tunnel environment, for such device of water environment turbomachine
It cannot conduct a research well.In addition the movable vane blade of these two types of experimental provisions is typically all to use pole to simulate around blade
Flowing, this is very big with practical blade shape difference, not can truly reflect the flow condition around blade, due to blade construction mistake
In simple, these two types of experimental provisions can not be conveniently adjusted inlet blade angle.The blade of rotary disc-type tail generator exists
Its inlet blade angle is changing always in rotation process, and the tail generated can cause stator blade Flow Field Distribution asymmetric.Direct acting is past
The blade of compound tail generator is driven by cam link, and the movement velocity of blade is difficult to keep stablizing, and leads to stator-rotor interaction
Frequency fluctuation.Therefore, how accurate simulation stator-rotor interaction has important reason to the efficient stable operation of research turbomachine
By and practical value.
Summary of the invention
In view of the deficiencies of the prior art, it the present invention provides a kind of circulating Stator tail generator, solves
Inlet blade angle is unstable and the unstable problem of blade movement velocity.
To achieve the above object, the technical solution of the present invention is as follows:
Device includes movable vane mechanism and sink component；Sink component includes upper flume, lower flume and two middle sinks；Upper water
Slot and lower flume connect up and down to be communicated, and the two sides between upper flume and lower flume are equipped with the middle sink being arranged symmetrically, under
The symmetrical two sidewalls in sink upper end are provided with notch, and one end of middle sink extend into notch and be equipped with collar frame, middle sink it is another
One end opens up horizontal mouth as water inlet/water outlet；Middle sink of two middle sinks respectively as inflow and outflow, as outlet
In stator blade blade is installed.
The movable vane mechanism includes horizontal conveyor belt, upper transmission shaft, vertical driving belt, movable vane blade, underdrive
Axis and speed regulating motor；The horizontal both ends of horizontal conveyor belt are all connected with top sheave, speed regulating motor output shaft and horizontal conveyor belt its
The top sheave of middle one end is coaxially connected, and the top sheave and upper transmission shaft of the horizontal conveyor belt other end are coaxially connected；Upper transmission shaft
Both ends are respectively connected with one group of vertical driving belt component, and each vertical driving belt component includes vertical driving belt and is connected to
The lower sheave of vertical driving belt upper and lower ends, the lower sheave point of the vertical driving belt upper end of two vertical driving belt components
It is not coaxially connected with the both ends of upper transmission shaft, the lower sheave difference of the vertical driving belt lower end of two vertical driving belt components
It is coaxially connected with the both ends of lower drive shaft；Row's movable vane is connected between the vertical driving belt of two vertical driving belt components
Blade, row's movable vane blade is along vertical driving belt arranged for interval, and each movable vane vane hinge is in vertical driving belt.
Wherein side passes through sink in side to the vertical driving belt of the vertical driving belt component of described two
Collar frame, the vertical driving belt other side of two vertical driving belt components pass through the collar frame of sink in the other side.
The both ends of the lower drive shaft are installed on the inner wall of lower flume by rolling bearing units support.
The speed regulating motor is fixed on fixed top plate, and fixed top plate is fixed on the top of upper flume.
The movable vane both ends of the blade has cylinder protruding shaft, and there are equidistant hole, hole in the vertical driving belt surface
The cylinder protruding shaft being had for hingedly installing movable vane both ends of the blade.
The aerofoil profile of the movable vane blade is determined by test content.
One row's stator blade blade is installed, row's stator blade blade is upper and lower along the vertical direction in the middle sink as outlet
Arranged for interval.
The screwed cylinder protruding shaft in stator blade blade one end, cylinder protruding shaft are fixed on the side wall of middle sink, so that
Stator blade blade is horizontally-supported to be connected between middle sink two sidewalls.
The movable vane blade and its material of stator blade blade is austenitic stainless steel.
The material of the upper flume, lower flume and two middle sinks is that transparent panel is made every effort to overcome in Asia.
There is axis hole in the upper flume side, and transmission shaft stretches out in convenience, installs transmission shaft.
The lower sheave prevents driving belt along pulley Axial offsetting movements.
The experiment motion process of apparatus of the present invention are as follows: speed regulating motor with dynamic water tank outside pulley at the uniform velocity rotate, outside sink
Pulley is at the uniform velocity rotated with the pulley in dynamic water tank by axis, and the belt in sink remains a constant speed movement.Being fixed on belt has one
Determine rising or descending motion that the movable vane blade of the angle of attack remains a constant speed.When movable vane blade cyclic passes through stator blade blade to leaf
Generation effect in piece flow field carrys out movable vane tail when simulated impeller machinery stator-rotor interaction to the interference effect and stator blade in stator blade flow field to dynamic
The reaction of leaf tail mark cutting.When experiment, needed to select specific blade shape, blade angle, fluid velocity according to experiment
With blade movement velocity.Data are acquired when blade is moved towards a direction, stop adopting when blade moves in the opposite direction
Collect data.
Beneficial effects of the present invention:
1, compared to rotary disc-type tail generator, well solved that inlet angle in pole motion process changes is asked
Topic has well solved pole speed unevenness, stator-rotor interaction when pole moves back and forth compared to the reciprocating tail generator of direct acting
The problem of frequency changes.
2, due to using the sealing structure of lateral sink and vertical sink, avoid that flow in experimentation reveals is asked
Topic.Blade initial position can not reduce influence of the blade initial position to experiment flow field in lateral sink simultaneously.Blade
Shuttling movement, time interval is big up and down for blade, has the sufficient time to reform flow field after return, the influence to data acquisition journey
It is small.
3, generating device of the present invention replacement blade is convenient, can easy adjustment blade clipping room away from and blade angle.It can be into
The different blade profile of row, the test of different stator-rotor interaction frequency and intensity.Using true blade profile rather than pole, can more realistically reflect
Blade Flow Field Distribution when stator-rotor interaction.The present invention has versatility good, it is easy to accomplish, feature easy to use.
Detailed description of the invention
Fig. 1 is the general structure schematic diagram of circulating Stator tail generating device；
Fig. 2 is pulley blocks, driving belt group, rolling bearing units, the movable vane mechanism of axis group and movable vane blade composition；
Fig. 3 is a typical movable vane blade construction schematic diagram；
Fig. 4 is a typical stator blade blade construction schematic diagram；
Fig. 5 is lateral sink structure schematic diagram；
Fig. 6 is the vertical sink structure schematic diagram of top half；
Fig. 7 is the vertical sink structure schematic diagram in lower half portion；
Fig. 8 is that circulating stator-rotor interaction tail generating device moves schematic diagram；
Fig. 9 is the selected vane airfoil profile inflow angle of attack schematic diagram of embodiment.
In figure: fixed top plate 1, horizontal conveyor belt 2, upper transmission shaft 3, vertical driving belt 4, middle sink 5, movable vane blade
6, rolling bearing units 7, speed regulating motor 8, upper flume 9, stator blade blade 10, lower flume 11, lower sheave 12, lower drive shaft 13, top sheave
14, head pulley 15.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawing:
The present apparatus is mounted on aerofoil profile water tunnel test platform, as shown in Figure 1, present invention specific implementation includes movable vane mechanism and water
Bowl assembly；Sink component includes upper flume 9, lower flume 11 and two middle sinks 5；Upper flume 9 and about 11 lower flume connect phase
Logical, the two sides between upper flume 9 and lower flume 11 are equipped with the middle sink 5 being arranged symmetrically, as shown in fig. 6,9 bottom end of upper flume
Opening, the closing of 11 bottom of lower flume, upper end opening is connected with the bottom end opening of upper flume 9 and is communicated, as shown in fig. 7, in lower flume
The symmetrical two sidewalls in 11 upper ends are provided with notch, and one end of middle sink 5 extend into notch and is equipped with for cooperating limit isolation dynamic
The collar frame of leaf mechanism, the other end of middle sink 5 open up horizontal mouth as water inlet/water outlet；Two middle sinks 5 respectively as
Inflow and outflow, i.e. two middle sinks 5 are one of as water inlet, another is as water outlet, as pacifying in the middle sink 5 of outlet
Equipped with stator blade blade 10.
Upper flume 9 is supreme bottom surface through tubular construction, and lower flume 11 is the cup configuration with bottom panel.Middle sink
5 extend into be provided with the structure (collar frame) for running through rectangular through-hole up and down inside 11 notch of lower flume, and the space of collar frame is used for
Driving belt 4 drives movable vane blade 6 to move up and down.Upper flume 9, lower flume 11 are formed after being fixedly connected with two middle sinks 5
Entire sink is sealed using sealant, and movable vane mechanism is contained in internal formation confined space by entire sink.
The material of upper flume 9, lower flume 11 and two middle sinks 5 is that transparent panel is made every effort to overcome in Asia.As in the middle sink 5 of outlet
One row's stator blade blade 10 is installed, row's stator blade blade 10 arranged for interval up and down along the vertical direction.10 one end of stator blade blade has
The cylinder protruding shaft of screw thread, cylinder protruding shaft are fixed on the side wall of middle sink 5, so that stator blade blade 10 is horizontally-supported to be connected to middle sink
Between 5 two sidewalls.
As shown in Fig. 2, movable vane mechanism includes horizontal conveyor belt 2, upper transmission shaft 3, vertical driving belt 4, movable vane blade
6, lower drive shaft 13 and speed regulating motor 8；Speed regulating motor 8 is fixed on fixed top plate 1, and fixed top plate 1 is fixed on the top of upper flume 9
Portion, the horizontal both ends of horizontal conveyor belt 2 are all connected with top sheave 14,8 output shaft of speed regulating motor and horizontal conveyor belt 2 wherein one end
Top sheave 14 it is coaxially connected, the top sheave 14 and upper transmission shaft 3 of 2 other end of horizontal conveyor belt are coaxially connected；Upper transmission shaft 3
Both ends are respectively connected with one group of vertical driving belt component, and each vertical driving belt component includes vertical driving belt 4 and connection
Under the lower sheave 12 of vertical 4 upper and lower ends of driving belt, 4 upper end of vertical driving belt of two vertical driving belt components
Pulley 12 is coaxially connected with the both ends of upper transmission shaft 3 respectively, 4 lower end of vertical driving belt of two vertical driving belt components
Lower sheave 12 is coaxially connected with the both ends of lower drive shaft 13 respectively；The vertical driving belt 4 of two vertical driving belt components it
Between be connected with row's movable vane blade 6, for row's movable vane blade 6 along vertical 4 arranged for interval of driving belt, each movable vane blade 6 is hinged
In vertical driving belt 4.Upper transmission shaft 3 and lower drive shaft 13 are arranged in parallel up and down respectively.
As shown in figure 5, wherein side passes through side Zhong Shui to the vertical driving belt 4 of two vertical driving belt components
The collar frame of slot 5,4 other side of vertical driving belt of two vertical driving belt components pass through the collar of sink 5 in the other side
Frame, collar frame are used for the up and down motion of movable vane blade 6, can reduce the influence in flow field in 4 pairs of driving belt lateral sinks 5.
As shown in Figure 1, the both ends of lower drive shaft 13 support the inner wall for being installed on lower flume 11 by rolling bearing units 7.Band
Seat bearing 7 is mounted on by bolt, and 7 internal diameter of rolling bearing units is equal with 3 outer diameter of axis.
As shown in Figure 3 and Figure 4, the both ends of movable vane blade 6 and stator blade blade 10 have cylinder protruding shaft, vertical driving belt 4
There are equidistant hole, the cylinder protruding shaft that hole has for hingedly installing 6 both ends of movable vane blade in surface.Movable vane blade 6 and stator blade leaf
Its material of piece 10 is austenitic stainless steel.
Two driving belts are the belts that section is rectangle, vertical driving belt 4 with a thickness of 10-12mm, width is under
The groove of pulley 12 cooperates, and cross section is rectangle.
The course of work of the invention is as follows:
Speed regulating motor 8 with dynamic water tank outside top sheave 14 at the uniform velocity rotate, the top sheave 14 outside sink pass through axis band dynamic water tank
Interior pulley at the uniform velocity rotates, and the belt in sink remains a constant speed movement.Being fixed on belt has the movable vane blade 6 of certain angle of attack to protect
Hold rising or descending motion at the uniform velocity.
The generation of blade flow field is acted on when movable vane blade 6 periodically passes through stator blade blade 10, it is dynamic to carry out simulated impeller machinery
The reaction that movable vane tail cuts the interference effect and stator blade in stator blade flow field to movable vane tail when quiet interference.When experiment, according to
Experiment needs to select specific blade shape, blade angle, fluid velocity and blade movement velocity.In blade towards one party
To data are acquired when movement, stop data collection when blade moves in the opposite direction.Fig. 8 is circulating stator-rotor interaction tail hair
Generating apparatus moves schematic diagram, and thin straight arrow represents flow field flow direction in figure, and thick black arrow represents the movement side of driving belt 4
To.
Specific embodiment 1, by controlling the revolving speed of speed regulating motor, control movable vane blade passes through the speed of stator blade blade,
Reach control stator-rotor interaction frequency.For example, control speed regulating motor revolving speed makes the speed V of vertical feed belt be 2m/s, it is adjacent
Movable vane spacing is D=100mm, then Stator frequency is V/D=20Hz.
Specific embodiment 2, by changing established angle of the movable vane blade on vertical driving belt, become a mandarin flow velocity and blade
Shape changes the inflow angle of attack of blade, can control the intensity of movable vane blade wake passing and the shedding frequence in whirlpool.Such as it may be selected
NACA0012 aerofoil profile or NACA0024 aerofoil profile, blade are 60 degree in the established angle α of vertical feed belt, and adjustment level becomes a mandarin stream
Fast U is 1m/s, and adjusting vertical blade movement velocity V is 1m/s, then the inflow angle of attack θ of movable vane blade is 15 degree, such as Fig. 9 institute
Show.
Specific embodiment 3, by the gap for changing driving belt fixation hole, thus it is possible to vary the spacing of movable vane blade, it can
To control the number of the tail in single stator blade runner.Such as two adjacent movable vane blade pitghs are 50mm, two adjacent vanes
Blade pitgh is 120mm, then when the inswept stator blade blade of movable vane blade, there are 2 movable vane blade wake passings in single stator blade runner.
In conclusion the present invention can relatively accurately simulated impeller machinery in stator-rotor interaction physical phenomenon, can this
The enterprising action stator wake of invention device-boundary layer disturbances test, the present invention can need to adjust according to experiment Stator frequency
Rate, the tail quantity in tail intensity and the single stator blade runner of fixed time.Can very well simulation stator-rotor interaction when movable vane tail
The reaction that mark cuts the interference effect and stator blade in stator blade flow field to movable vane tail.Inlet angle changes when solving simulation test
With stator-rotor interaction frequency unstable equal the problem of not being inconsistent with actual condition.The present invention has versatility good, it is easy to accomplish, user
Just the characteristics of.
Claims (9)
1. a kind of circulating Stator tail generating device, it is characterised in that: including movable vane mechanism and sink component；Sink
Component includes upper flume (9), lower flume (11) and two middle sinks (5)；Connect phase above and below upper flume (9) and lower flume (11)
Logical, the two sides between upper flume (9) and lower flume (11) are equipped with the middle sink (5) of two be arranged symmetrically, in lower flume
(11) the symmetrical two sidewalls in upper end are provided with notch, and one end of middle sink (5) extend into notch and is equipped with collar frame, middle sink
(5) the other end opens up horizontal mouth as water inlet or water outlet；Two middle sinks (5) are respectively used to inflow and outflow, as
Stator blade blade (10) are installed in the middle sink (5) of outlet；
The movable vane mechanism includes horizontal conveyor belt (2), upper transmission shaft (3), vertical driving belt (4), movable vane blade
(6), lower drive shaft (13) and speed regulating motor (8)；Horizontal conveyor belt (2) horizontal both ends are all connected with top sheave (14), speed regulation electricity
The top sheave (14) of machine (8) output shaft and horizontal conveyor belt (2) wherein one end is coaxially connected, and horizontal conveyor belt (2) is another
The top sheave (14) and upper transmission shaft (3) at end are coaxially connected；Upper transmission shaft (3) both ends are respectively connected with one group of vertical driving belt group
Part, each vertical driving belt component include vertical driving belt (4) and are connected under vertical driving belt (4) upper and lower ends
Pulley (12), the lower sheave (12) of vertical driving belt (4) upper end of two vertical driving belt components respectively with upper transmission shaft
(3) both ends are coaxially connected, the lower sheave (12) of vertical driving belt (4) lower end of two vertical driving belt components respectively with
The both ends of lower drive shaft (13) are coaxially connected；One is connected between the vertical driving belt (4) of two vertical driving belt components
It arranges movable vane blade (6), row's movable vane blade (6) is articulated with along vertical driving belt (4) arranged for interval, each movable vane blade (6)
Vertical driving belt (4).
2. a kind of circulating Stator tail generating device according to claim 1, it is characterised in that: described two
Wherein side passes through the collar frame of sink in side (5) to the vertical driving belt (4) of a vertical driving belt component, and two
Vertical driving belt (4) other side of vertical driving belt component passes through the collar frame of sink (5) in the other side.
3. a kind of circulating Stator tail generating device according to claim 1, it is characterised in that: under described
The both ends of transmission shaft (13) are installed on the inner wall of lower flume (11) by rolling bearing units (7) support.
4. a kind of circulating Stator tail generating device according to claim 1, it is characterised in that: the tune
Speed motor (8) is fixed on fixed top plate (1), and fixed top plate (1) is fixed on the top of upper flume (9).
5. a kind of circulating Stator tail generating device according to claim 1, it is characterised in that: described is dynamic
Leaf blade (6) both ends have cylinder protruding shaft, and there is equidistant hole on described vertical driving belt (4) surface, and hole is for hingedly pacifying
The cylinder protruding shaft that dress movable vane blade (6) both ends have.
6. a kind of circulating Stator tail generating device according to claim 1, it is characterised in that: the work
To be equipped with row's stator blade blade (10) in the middle sink (5) of outlet, row's stator blade blade (10) along the vertical direction between the upper and lower every
Arrangement.
7. a kind of circulating Stator tail generating device according to claim 1, it is characterised in that: described is quiet
The screwed cylinder protruding shaft in leaf blade (10) one end, cylinder protruding shaft is fixed on the side wall of middle sink (5), so that stator blade blade
(10) horizontally-supported to be connected between middle sink (5) two sidewalls.
8. a kind of circulating Stator tail generating device according to claim 1, it is characterised in that: described is dynamic
Leaf blade (6) and stator blade blade (10) its material are austenitic stainless steel.
9. a kind of circulating Stator tail generating device according to claim 1, it is characterised in that: described is upper
The material of sink (9), lower flume (11) and two middle sinks (5) is that transparent panel is made every effort to overcome in Asia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810360587.5A CN108692913B (en) | 2018-04-20 | 2018-04-20 | A kind of circulating Stator tail generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810360587.5A CN108692913B (en) | 2018-04-20 | 2018-04-20 | A kind of circulating Stator tail generating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108692913A CN108692913A (en) | 2018-10-23 |
| CN108692913B true CN108692913B (en) | 2019-07-02 |
Family
ID=63845103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810360587.5A Active CN108692913B (en) | 2018-04-20 | 2018-04-20 | A kind of circulating Stator tail generating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108692913B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252279A (en) * | 2021-06-28 | 2021-08-13 | 哈尔滨工业大学 | Pneumatic test simulation device for impeller machinery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2921349Y (en) * | 2006-07-03 | 2007-07-11 | 付德红 | One-direction rotary turbine set capable of utilizing non-directional wind power sea wave tide power |
| CN201635910U (en) * | 2009-10-12 | 2010-11-17 | 韦兆军 | Novel hydroturbine of guiding and pounding type |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030227175A1 (en) * | 2002-06-07 | 2003-12-11 | John Manolis | Renewable energy system |
| CN202057323U (en) * | 2011-04-25 | 2011-11-30 | 常州市三维技术成套设备有限公司 | Steam turbine blade measuring equipment |
| CN102680222B (en) * | 2012-05-14 | 2014-06-25 | 大连理工大学 | Blade experiment device for tidal current energy water turbine |
| CN206161272U (en) * | 2016-10-21 | 2017-05-10 | 大连理工大学 | Reciprocating type blade tail generator |
| CN107764198B (en) * | 2017-11-02 | 2024-02-02 | 天津大学 | Engine stator blade axial gap light projection measuring device and method |
-
2018
- 2018-04-20 CN CN201810360587.5A patent/CN108692913B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2921349Y (en) * | 2006-07-03 | 2007-07-11 | 付德红 | One-direction rotary turbine set capable of utilizing non-directional wind power sea wave tide power |
| CN201635910U (en) * | 2009-10-12 | 2010-11-17 | 韦兆军 | Novel hydroturbine of guiding and pounding type |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108692913A (en) | 2018-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203869979U (en) | Rotary erosive wear testing device | |
| CN108692913B (en) | A kind of circulating Stator tail generating device | |
| RU2537115C2 (en) | Hydraulic energy conversion plant and its control method | |
| Puddu et al. | Aerodynamic characterization of a Wells turbine under bi-directional airflow | |
| CN203560478U (en) | Rotary air valve of jigger | |
| CN111729352A (en) | Fire fighting equipment is used in chemical industry coating production | |
| CN108115462A (en) | A kind of programmable microscale lubrication jet angle phase adjusting device and its application method | |
| CN107894323A (en) | A kind of water tunnel experiment vibration hydrofoil unit | |
| CN107817087A (en) | A kind of water tank device and operating method for being used to simulate open channel HYDRODYNAMIC CHARACTERISTICS | |
| CN109505643A (en) | A kind of intelligence wind tube wind quantity regulating device | |
| CN111751270A (en) | Rain erosion test device and system | |
| Mao et al. | A new method of dynamic mesh used in continuous guide vane closure of a reversible pump-turbine in generating mode | |
| CN209214869U (en) | A kind of air pulse equipment | |
| CN107654687B (en) | Pulse valve for radioactive conditions | |
| GB745084A (en) | Improvements in or relating to apparatus for utilizing wave energy | |
| CN103629122A (en) | Detection platform realizing active control on vibration frequency of internal cavitation of centrifugal pump | |
| CN206161272U (en) | Reciprocating type blade tail generator | |
| CN209212456U (en) | A kind of adjustable hydraulic turbine of nozzle angle | |
| CN106441782B (en) | A kind of reciprocating blade wake passing generator | |
| CN103344410B (en) | A kind of analogue means of continous-stable current water | |
| CN208885549U (en) | A kind of compressor host | |
| CN106837435A (en) | Jet sectional center frame vibration damping adjusts the method and device of steam turbine sealing gland | |
| Zhou et al. | Analysis of pressure fluctuation and stress deformation in reverse generation of large vertical axial flow pump | |
| CN105937415A (en) | Supercritical carbon dioxide turbine device capable of adapting to large-range back pressure and flow | |
| CN106020251A (en) | Solar tracking driving device based on planetary speed reducer and worm and gear speed reducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |