CN207526626U - A kind of flow regulating barrels have the draft tube that can be adjusted axially - Google Patents
A kind of flow regulating barrels have the draft tube that can be adjusted axially Download PDFInfo
- Publication number
- CN207526626U CN207526626U CN201721632757.8U CN201721632757U CN207526626U CN 207526626 U CN207526626 U CN 207526626U CN 201721632757 U CN201721632757 U CN 201721632757U CN 207526626 U CN207526626 U CN 207526626U
- Authority
- CN
- China
- Prior art keywords
- flow regulating
- regulating barrels
- pipe section
- taper pipe
- draft tube
- 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.)
- Expired - Fee Related
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Hydraulic Turbines (AREA)
Abstract
There is the draft tube that can be adjusted axially the utility model discloses a kind of flow regulating barrels, including Taper Pipe section and flow regulating barrels, the Taper Pipe section front end oral area is used to connect with the hydraulic turbine, the flow regulating barrels are coaxially set in Taper Pipe section, and it is equipped with to adjust the adjusting part that the opposite Taper Pipe section of flow regulating barrels is axially moveable between the flow regulating barrels and Taper Pipe section madial wall, it is movable along the axial direction with respect to Taper Pipe section that flow regulating barrels are adjusted by adjusting part, so that flow regulating barrels are adjusted with respect to the hydraulic turbine to optimum position, effectively it is adaptively adjusted according to different flows, ensure that the hydraulic turbine is remained with higher efficiency.
Description
【Technical field】
The utility model is related to be related to Fluid Machinery and Engineering equipment technical field, especially a kind of flow regulating barrels have can axis
To the draft tube of adjusting.
【Background technology】
The hydraulic turbine is the dynamic power machine for the kinetic energy of flow being converted to mechanical energy, belongs to the turbomachinery in fluid machinery.
Most of modern hydraulic turbine is mounted in power station, and for driving generating equipment, the hydraulic turbine is generally provided with draft tube, draft tube
A kind of caliber cross-sectional area is usually designed to by small increased bend pipe, when the flow at outlet of rotary wheel passes through draft tube, flow velocity
Decline, pressure rise, form inverse pressure field, therefore draft tube is called and makees diffuser pipe.Its effect is：The flow at outlet of rotary wheel
Row downstream, and recycles the energy of a part of flow at outlet of rotary wheel, maximumlly utilizes the potential energy of flow to the greatest extent.In practice
In it is desirable that the flowing of flow is as steady as possible in draft tube, diffusion effect is as well as possible, and recovery coefficient is as high as possible.
However in real work, often there is following several situations for draft tube.
First, since draft tube is a kind of pipeline of diffusion formula, when flow flows through draft tube, the separation of flow, two are easily caused
The phenomenon that secondary reflux and flowing instability, especially for the draft tube of curved elbow formula, this phenomenon becomes apparent.
Second, when the hydraulic turbine is when deviateing optimum operating condition operation, the flowing into draft tube will become more complicated,
Flow generates bias under the influence of periodical non-stationary factor and centrifugal force, and forms eccentric vortex band, and eccentric vortex band is with low frequency
Period rotated in draft tube, hit the wall surface of draft tube, form back wave and upstream propagate and precession, and then return
Flow area, draft tube caused to generate pressure fluctuation, when the fluctuating frequency of pressure that eccentric vortex band induces close to unit some is intrinsic
During frequency, and strong resonance will be caused.
These above-mentioned problems can not only make the operation of unit, and there is unstable situations, also make the recovery coefficient of draft tube
It reduces, causes the work efficiency drop of the hydraulic turbine.
Utility model patent number：201420291918.1 it discloses a kind of draft tube for the hydraulic turbine, including front end
The Taper Pipe section for being open small and big open rearward end, the Taper Pipe section front end are docked with rotary wheel of water turbine water outlet, the Taper Pipe section
It is equipped in channel and is coaxial therewith and the flow regulating barrels of front and rear opening.In the utility model, flow regulating barrels are fixed in Taper Pipe section, one
Determine to increase its stability run in degree, reduce fluctuation pressure, but flow regulating barrels cannot be adjusted with respect to Taper Pipe section,
It cannot accordingly be adjusted according to flow size, so that the hydraulic turbine keeps higher efficiency.
The utility model is researched and proposed in view of the deficiencies of the prior art.
【Utility model content】
There is the draft tube that can be adjusted axially, rectification the technical problem to be solved by the present invention is to provide a kind of flow regulating barrels
Cylinder is adjustably set in Taper Pipe section, can correspondingly be adjusted according to the size of water flow flow regulating barrels and Taper Pipe section front port away from
From so that the current conditions in Taper Pipe section are stablized relatively, and then ensure that the hydraulic turbine has higher efficiency.
In order to solve the above technical problems, a kind of flow regulating barrels of the utility model have the draft tube that can be adjusted axially, including cone
Pipeline section and flow regulating barrels, for being connect with the hydraulic turbine, the flow regulating barrels are coaxially set in Taper Pipe section the Taper Pipe section front end oral area,
And it is equipped with to adjust the adjusting group that the opposite Taper Pipe section of flow regulating barrels is axially moveable between the flow regulating barrels and Taper Pipe section madial wall
Part.
The adjusting part includes elastic telescopicing rod group, guide chute and adjusts sliding shoe, and the guide chute is set to
On Taper Pipe section madial wall, the adjusting sliding shoe is placed in guide chute, and described elastic telescopicing rod group one end is fixedly connected on whole
On the outside of flow cartridge, the elastic telescopicing rod group other end is fixedly connected with adjusting sliding shoe, and the adjusting sliding shoe, which is equipped with to work as, to be adjusted
Section sliding shoe is when sliding into precalculated position for will adjust the fastening assembly that sliding shoe and guide chute are locked.
The elastic telescopicing rod group includes loop bar and slide bar, and described loop bar one end is fixedly connected on the outside of flow regulating barrels, described
The loop bar other end is connect with sliding bar, and is equipped in the loop bar for the elastic component of elastic top pressure slide bar inner end, the cunning
Bar outer end is fixedly connected with adjusting sliding shoe.
The fastening assembly is bolt and nut.
The guide chute is T-slot.
Compared with prior art, a kind of flow regulating barrels of the utility model have the draft tube that can be adjusted axially, flow regulating barrels with
It is connected between Taper Pipe section by adjusting part, and flow regulating barrels being moved in an axial direction with respect to Taper Pipe section is adjusted by adjusting part
It is dynamic so that flow regulating barrels are adjusted with respect to the hydraulic turbine to optimum position, are effectively adaptively adjusted according to different flows,
Ensure that the hydraulic turbine is remained with higher efficiency.
【Description of the drawings】
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 is the cross-sectional view of the utility model.
【Specific embodiment】
It elaborates below in conjunction with the accompanying drawings to the embodiment of the utility model.
As shown in Figure 1, a kind of flow regulating barrels of the utility model have the draft tube that can be adjusted axially, including Taper Pipe section 1 and whole
Flow cartridge 2, the 1 front end oral area of Taper Pipe section with the hydraulic turbine for connecting, and the flow regulating barrels 2 are coaxially set in Taper Pipe section 1, and institute
It states and is equipped between 1 madial wall of flow regulating barrels 2 and Taper Pipe section to adjust flow regulating barrels 2 with respect to the adjusting group that Taper Pipe section 1 is axially moveable
Part 3.It is movable along the axial direction with respect to Taper Pipe section 1 that flow regulating barrels 2 are adjusted by adjusting part 3 so that flow regulating barrels 2 are with respect to water wheels
Machine and adjust to optimum position, be effectively adaptively adjusted according to different flows, ensure that the hydraulic turbine remains tool
There is higher efficiency.
The adjusting part 3 includes elastic telescopicing rod group 31, guide chute 32 and adjusts sliding shoe 33, the guide chute
32 are set on 1 madial wall of Taper Pipe section, and the adjusting sliding shoe 33 is placed in guide chute 32, and the guide chute 32 is T-shaped
Slot, described 31 one end of elastic telescopicing rod group are fixedly connected on 2 outside of flow regulating barrels, and 31 other end of elastic telescopicing rod group is with adjusting
Sliding shoe 33 is fixedly connected, and the adjusting sliding shoe 33 is equipped with to be used to adjust when adjusting sliding shoe 33 slides into precalculated position
The fastening assembly 34 that section sliding shoe 33 is locked with guide chute 32, the fastening assembly 34 are bolt and nut.
The elastic telescopicing rod group 31 includes loop bar 311 and slide bar 312, and described 311 one end of loop bar is fixedly connected on rectification
2 outside of cylinder, 311 other end of loop bar are slidably connected with slide bar 312, and are equipped in the loop bar 311 for elastic jacking sliding
The elastic component 313 of 312 inner end of bar, 312 outer end of slide bar are fixedly connected with adjusting sliding shoe 33.
When being adjusted, loosening fasteners 34, each sliding shoe 33 can then be moved along corresponding guide chute 32, and be worked as
When flow regulating barrels 2 are moved to precalculated position, fastener 34 is locked so that sliding shoe 33 is locked in guide chute 32.
Claims (5)
1. a kind of flow regulating barrels have the draft tube that can be adjusted axially, it is characterised in that including Taper Pipe section (1) and flow regulating barrels (2), institute
Taper Pipe section (1) front end oral area is stated for being connect with the hydraulic turbine, the flow regulating barrels (2) are coaxially set in Taper Pipe section (1), and described
It is equipped with what is be axially moveable for adjusting flow regulating barrels (2) with respect to Taper Pipe section (1) between flow regulating barrels (2) and Taper Pipe section (1) madial wall
Adjusting part (3).
2. a kind of flow regulating barrels have the draft tube that can be adjusted axially according to claim 1, it is characterised in that the adjusting group
Part (3) is including elastic telescopicing rod group (31), guide chute (32) and adjusts sliding shoe (33), and the guide chute (32) is set to
On Taper Pipe section (1) madial wall, the adjusting sliding shoe (33) is placed in guide chute (32), the elastic telescopicing rod group (31) one
End is fixedly connected on the outside of flow regulating barrels (2), and elastic telescopicing rod group (31) other end is fixedly connected with adjusting sliding shoe (33),
The adjusting sliding shoe (33), which is equipped with when adjusting sliding shoe (33) slides into precalculated position, is used to that sliding shoe (33) will to be adjusted
The fastening assembly (34) being locked with guide chute (32).
3. a kind of flow regulating barrels have the draft tube that can be adjusted axially according to claim 2, it is characterised in that the elasticity is stretched
Contracting bar group (31) includes loop bar (311) and slide bar (312), and described loop bar (311) one end is fixedly connected on the outside of flow regulating barrels (2),
Loop bar (311) other end is slidably connected with slide bar (312), and is equipped in the loop bar (311) for elastic top pressure slide bar
(312) elastic component (313) of inner end, slide bar (312) outer end are fixedly connected with adjusting sliding shoe (33).
4. a kind of flow regulating barrels have the draft tube that can be adjusted axially according to claim 2, it is characterised in that the fastening group
Part (34) is bolt and nut.
5. a kind of flow regulating barrels have the draft tube that can be adjusted axially according to claim 2, it is characterised in that described be oriented to is slided
Slot (32) is T-slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721632757.8U CN207526626U (en) | 2017-11-29 | 2017-11-29 | A kind of flow regulating barrels have the draft tube that can be adjusted axially |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721632757.8U CN207526626U (en) | 2017-11-29 | 2017-11-29 | A kind of flow regulating barrels have the draft tube that can be adjusted axially |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207526626U true CN207526626U (en) | 2018-06-22 |
Family
ID=62581327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721632757.8U Expired - Fee Related CN207526626U (en) | 2017-11-29 | 2017-11-29 | A kind of flow regulating barrels have the draft tube that can be adjusted axially |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207526626U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285005A (en) * | 2019-05-15 | 2019-09-27 | 江苏大学 | A kind of turbine draft tube with round and oval grid |
-
2017
- 2017-11-29 CN CN201721632757.8U patent/CN207526626U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285005A (en) * | 2019-05-15 | 2019-09-27 | 江苏大学 | A kind of turbine draft tube with round and oval grid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180622 Termination date: 20191129 |