CN103670883A - Water turbine draft tube - Google Patents
Water turbine draft tube Download PDFInfo
- Publication number
- CN103670883A CN103670883A CN201310587312.2A CN201310587312A CN103670883A CN 103670883 A CN103670883 A CN 103670883A CN 201310587312 A CN201310587312 A CN 201310587312A CN 103670883 A CN103670883 A CN 103670883A
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- conical head
- piston rod
- tube
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
The invention discloses a water turbine draft tube which comprises a rotary wheel, a taper tube and an elbow tube, wherein a conical head capable of stretching into the taper tube is arranged below the rotary wheel, an oil cylinder is arranged below the conical head, a piston and a piston rod are arranged in the oil cylinder, one end of the piston rod is connected with the piston, the other end of the piston rod stretches out of the oil cylinder to be fixedly connected with the conical head, a flow sensor is arranged on the inner wall of the elbow tube, and both the flow sensor and the oil cylinder are controlled through a PLC. According to the water turbine draft tube, the flowing speed of water flowing into the elbow tube from the taper tube can be measured through the flow sensor, the oil cylinder is started when the flowing speed is lower than a set value, the piston rod drives the conical head to move upwards, the conical head then enters the taper tube to break a vortex strip center in the taper tube, and then flow separation is prevented, the water flowing speed is reduced, and the water flow form is adjusted.
Description
Technical field
The present invention relates to a kind of Component of Hydraulic Turbines, particularly a kind of turbine draft tube.
Background technique
Existing turbine draft tube shape, size and highly all fixing, can not adjust after installation.Water turbine, after operation a period of time, because of water flow size variation, especially during small flow, can make the phenomenon that the draft tube generation separation of flow or serious air corrode occur, thus the working life of having reduced draft tube.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, and the turbine draft tube of a kind of capable of regulating Taper Pipe internal diameter and flow shape is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of turbine draft tube, comprise runner, Taper Pipe and ell, described runner below is provided with the conical head that can stretch in Taper Pipe, this conical head below is provided with oil cylinder, in this oil cylinder, be provided with piston and piston rod, one end of this piston rod connects piston, and the other end stretches out oil cylinder and is fixedly connected with conical head, described ell inwall is provided with flow transducer, and this flow transducer and oil cylinder are all controlled by PLC.
Described flow transducer is gravity type flow transducer.
The described piston rod outside of stretching into conical head is set with guide sleeve.
The present invention adopts after said structure, above-mentioned flow transducer can be measured from Taper Pipe and flow into the water velocity in ell, when flow velocity is during lower than setting value, oil cylinder starts, and piston rod drives conical head to move up, and conical head carries out in Taper Pipe, destroy Taper Pipe Nei Wodai center, prevent the formation of the separation of flow, reduce water velocity simultaneously, adjust flow shape.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of turbine draft tube of the present invention.
Wherein have: 1. ell; 2. runner; 3. Taper Pipe; 4. flow transducer; 5. conical head; 6. oil cylinder; 7. piston; 8. piston rod; 9. guide sleeve.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further detailed explanation with concrete better embodiment.
As shown in Figure 1, a kind of turbine draft tube, comprise runner 2, Taper Pipe 3 and ell 1, described runner 2 belows are provided with the conical head 5 that can stretch in Taper Pipe 3, and these conical head 5 belows are provided with oil cylinder 6, are provided with piston 7 and piston rod 8 in this oil cylinder 6, one end of this piston rod 8 connects piston 7, the other end stretches out oil cylinder 6 and is fixedly connected with conical head 5, and described ell 1 inwall is provided with flow transducer 4, and this flow transducer 4 is all controlled by PLC with oil cylinder 6.
Described flow transducer 4 is gravity type flow transducer.
Described piston rod 8 outsides of stretching into conical head 5 are set with guide sleeve 9.This guide sleeve 9 can prevent the double swerve of piston rod 8, also protects piston rod 8 not to be scratched.
During use, above-mentioned flow transducer 4 can be measured the water velocity flowing in ell 1 from Taper Pipe 3, when flow velocity is during lower than setting value, flow transducer 4 by signal feed back to PLC, PLC starts instruction oil cylinder 6, by oil filler pipe (prior art, in figure, do not mark) in the chamber of the interior piston-rodless 8 of oil cylinder 6, inject the oil of regulation and pressurize, piston 7 and piston rod 8 are moved up, piston rod 8 drives conical head 5 to move up, conical head 5 carries out in Taper Pipe 3, destroy Taper Pipe 3 Nei Wodai centers, prevent the formation of the separation of flow, reduce water velocity simultaneously, adjust flow shape.When flow transducer 4 records water velocity higher than capping, then by signal feed back to PLC, PLC is by instruction oil cylinder 6 release of draining the oil, piston 7, piston rod 8 and conical head 5 will automatically decline under the effect of gravity.
Claims (3)
1. a turbine draft tube, comprise runner (2), Taper Pipe (3) and ell (1), it is characterized in that: described runner (2) below is provided with the conical head (5) that can stretch in Taper Pipe (3), this conical head (5) below is provided with oil cylinder (6), in this oil cylinder (6), be provided with piston (7) and piston rod (8), one end of this piston rod (8) connects piston (7), the other end stretches out oil cylinder (6) and is fixedly connected with conical head (5), described ell (1) inwall is provided with flow transducer (4), this flow transducer (4) is all controlled by PLC with oil cylinder (6).
2. turbine draft tube according to claim 1, is characterized in that: described flow transducer (4) is gravity type flow transducer.
3. turbine draft tube according to claim 1, is characterized in that: described in stretch into conical head (5) piston rod (8) outside be set with guide sleeve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310587312.2A CN103670883A (en) | 2013-11-21 | 2013-11-21 | Water turbine draft tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310587312.2A CN103670883A (en) | 2013-11-21 | 2013-11-21 | Water turbine draft tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103670883A true CN103670883A (en) | 2014-03-26 |
Family
ID=50309448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310587312.2A Pending CN103670883A (en) | 2013-11-21 | 2013-11-21 | Water turbine draft tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103670883A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119289A (en) * | 2017-11-29 | 2018-06-05 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of draft tube convenient for assembly and connection |
| CN109139347A (en) * | 2018-08-31 | 2019-01-04 | 北京维蓝清能科技有限公司 | A kind of increasing drive formula tidal generating set |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1428349A (en) * | 1974-04-04 | 1976-03-17 | Solem Machine Co | Down-flow mixing apparatus |
| CN2081436U (en) * | 1990-12-01 | 1991-07-24 | 黄国宏 | Mixed flow hydraulic turbine drainage awl stretching taper sleeve (conical pipe) |
| CN2104317U (en) * | 1991-04-28 | 1992-05-13 | 东方电机厂 | Rotating wheel outfall-adjusting hydraulic turbine |
| CN1904222A (en) * | 2006-08-08 | 2007-01-31 | 四川东风电机厂有限公司 | Installation method of axle extend through flow type hydraulic turbine set |
| CN101501329A (en) * | 2006-06-09 | 2009-08-05 | 安德里兹技术资产管理有限公司 | Liquid control jet during part load operation in a hydraulic turbine |
| CN201943879U (en) * | 2010-12-28 | 2011-08-24 | 中国长江三峡集团公司 | Reducing draft tube of hydro-turbine |
| CN202108637U (en) * | 2011-06-22 | 2012-01-11 | 山东森玛格德节能设备有限公司 | Tail water device of water turbine |
-
2013
- 2013-11-21 CN CN201310587312.2A patent/CN103670883A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1428349A (en) * | 1974-04-04 | 1976-03-17 | Solem Machine Co | Down-flow mixing apparatus |
| CN2081436U (en) * | 1990-12-01 | 1991-07-24 | 黄国宏 | Mixed flow hydraulic turbine drainage awl stretching taper sleeve (conical pipe) |
| CN2104317U (en) * | 1991-04-28 | 1992-05-13 | 东方电机厂 | Rotating wheel outfall-adjusting hydraulic turbine |
| CN101501329A (en) * | 2006-06-09 | 2009-08-05 | 安德里兹技术资产管理有限公司 | Liquid control jet during part load operation in a hydraulic turbine |
| CN1904222A (en) * | 2006-08-08 | 2007-01-31 | 四川东风电机厂有限公司 | Installation method of axle extend through flow type hydraulic turbine set |
| CN201943879U (en) * | 2010-12-28 | 2011-08-24 | 中国长江三峡集团公司 | Reducing draft tube of hydro-turbine |
| CN202108637U (en) * | 2011-06-22 | 2012-01-11 | 山东森玛格德节能设备有限公司 | Tail water device of water turbine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119289A (en) * | 2017-11-29 | 2018-06-05 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of draft tube convenient for assembly and connection |
| CN108119289B (en) * | 2017-11-29 | 2019-07-09 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of draft tube convenient for assembly and connection |
| CN109139347A (en) * | 2018-08-31 | 2019-01-04 | 北京维蓝清能科技有限公司 | A kind of increasing drive formula tidal generating set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140326 |