CN201080890Y - Hydroturbine DC jet tube feedback device - Google Patents
Hydroturbine DC jet tube feedback device Download PDFInfo
- Publication number
- CN201080890Y CN201080890Y CNU2007201048249U CN200720104824U CN201080890Y CN 201080890 Y CN201080890 Y CN 201080890Y CN U2007201048249 U CNU2007201048249 U CN U2007201048249U CN 200720104824 U CN200720104824 U CN 200720104824U CN 201080890 Y CN201080890 Y CN 201080890Y
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- CN
- China
- Prior art keywords
- sensor
- needle
- piston
- feedback
- utility
- 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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- 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 utility model provides a turbine straight flow nozzle feedback device, comprising a needle tip, a needle stem arranged on the needle tip and a piston arranged on the stem. The utility model is characterized in that: the end of the needle stem is provided with a trepanning into which a sensor lever is inserted. The other end of the sensor lever is connected with a sensor. A magnetic ring sleeved on the sensor lever is fixed on the piston. A needle-displacement signal can be converted into an electric feedback signal conveniently and transmitted to a speed governor, thereby realizing the coordination control of the needle stroke and the opening of the speed governor. As a result, the utility model is simplified in structure, improved in reliability, high in feedback accuracy, thereby radically overcoming the drawbacks of complicated structure, low feedback accuracy, poor reliability, difficult maintenance, etc. of the prior feedback device.
Description
Technical field
The utility model relates to a kind of water turbine direct current jet pipe feedback means, belongs to water turbine design and manufacturing technology field.
Background technique
At present, Pelton wheel direct current jet pipe feedback means is continued to use traditional machine feedback structure always, promptly adopt feedback cone, moving leader, spring, steel cable, pulley etc. as feedback elements, the displacement signal transmission of nozzle needle is fed back to speed regulator, be used for water turbine when regulating, the direct current jet pipe can change its flow reposefully.Because feedback means is in the jet pipe that high-pressure water flow encircles, operating conditions is very abominable, and working space also is restricted, thus the nozzle needle mechanical feedback device, complex structure, feedback accuracy is low, poor reliability, maintenance difficulty.Therefore, be necessary fully prior art is improved.
Summary of the invention
For overcoming the complex structure that existing water turbine direct current jet pipe feedback means exists, feedback accuracy is low, poor reliability, and deficiencies such as maintenance difficulty, the utility model provides a kind of highly reliable, high-precision water turbine direct current jet pipe feedback means.
The utility model is realized by following technical proposal: a kind of water turbine direct current jet pipe feedback means, comprise the nozzle needle head and on needle stem and the piston on the bar, it is characterized in that the needle stem afterbody is provided with trepanning, suit sensor bar in the trepanning, the other end of sensor bar links to each other with sensor, and the magnet ring that is sleeved on the sensor bar is fixed on the piston.When the direct current jet pipe is worked, high pressure oil enters that oil cylinder promotes piston and needle stem, the nozzle needle head moves back and forth, thereby make the magnet ring and the sensor bar generation relative displacement that are fixed on the piston, convert this displacement signal to electrical feedback signal output by sensor, realize the control of speed regulator the water turbine open degree.
Described sensor bar one end activity is plugged in the axial trepanning of needle stem afterbody so that needle stem and the piston that is attached thereto and on magnet ring on sensor bar, move and produce displacement.
The described sensor bar the other end passes back cylinder cover and links to each other with sensor, and the through hole of the lead on the sensor on cylinder body drawn, and the displacement signal transmission of nozzle needle head is fed back to speed regulator.
The utility model compared with prior art has following advantage and effect: adopt such scheme, can be easily the displacement signal of nozzle needle be converted to electrical feedback signal and passes to speed regulator through lead, realize the joint control of nozzle needle stroke and speed regulator open degree, make its designs simplification, reliability improves, the feedback accuracy height, fundamentally overcome the complex structure that existing feedback means brings, feedback accuracy is low, poor reliability, deficiencies such as maintenance difficulty.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As Fig. 1, nozzle needle head 1 is linked as an integral body by needle stem 2 and piston 4, and place in the nozzle needle servomotor cylinder body 3, the afterbody of needle stem 2 is provided with trepanning 14, and the head end of sensor bar 6 is plugged in the trepanning 14, magnet ring 5 is sleeved on the sensor bar 6, and fix with piston 4, so that together move with piston, the tail end of sensor bar 6 passes back cylinder cover 8 and links to each other with sensor 11, lead 10 on the sensor 11 links to each other with speed regulator after the through hole on the cylinder body is drawn.After high pressure oil per os 7 enters oil cylinder, promptly promote piston 4 and on magnet ring 5, needle stem 2, nozzle needle head 1 move to right, magnet ring 5 is moved on sensor bar 6, thereby nozzle needle head 1 displacement signal is passed to speed regulator through the lead 10 of sensor 11, in opening process, control with the joint of speed regulator open degree thereby finish nozzle needle 1.Otherwise after high pressure oil per os 9 entered oil cylinder, the then corresponding nozzle needle 1 of finishing was controlled with the joint of speed regulator turndown ratio in closing closed procedure, and 12 are the maintenance oil drain out, and 13 is sewage draining exit.
Claims (3)
1. water turbine direct current jet pipe feedback means, comprise the nozzle needle head and on needle stem and the piston on the bar, it is characterized in that the needle stem afterbody is provided with trepanning, suit sensor bar in the trepanning, the other end of sensor bar links to each other with sensor, and the magnet ring that is sleeved on the sensor bar is fixed on the piston.
2. water turbine direct current jet pipe feedback means according to claim 1 is characterized in that described sensor bar one end activity is plugged in the axial trepanning of needle stem afterbody.
3. water turbine direct current jet pipe feedback means according to claim 1 is characterized in that the described sensor bar the other end passes back cylinder cover and links to each other with sensor, and the through hole of the lead on the sensor on cylinder body drawn with speed regulator and linked to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201048249U CN201080890Y (en) | 2007-07-24 | 2007-07-24 | Hydroturbine DC jet tube feedback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201048249U CN201080890Y (en) | 2007-07-24 | 2007-07-24 | Hydroturbine DC jet tube feedback device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201080890Y true CN201080890Y (en) | 2008-07-02 |
Family
ID=39614563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201048249U Expired - Fee Related CN201080890Y (en) | 2007-07-24 | 2007-07-24 | Hydroturbine DC jet tube feedback device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201080890Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590960A (en) * | 2013-11-30 | 2014-02-19 | 国家电网公司 | Oil head feedback device applied to axial flow movable propeller turbine and mounting technology of oil head feedback device |
| CN103711634A (en) * | 2013-12-29 | 2014-04-09 | 国家电网公司 | Magnetic ring stroke sensing type water turbine blade stroke feedback device |
| CN105697214A (en) * | 2016-01-27 | 2016-06-22 | 哈尔滨电机厂（昆明）有限责任公司 | Water turbine spray pipe capable of achieving buffered closing of needle tip |
-
2007
- 2007-07-24 CN CNU2007201048249U patent/CN201080890Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590960A (en) * | 2013-11-30 | 2014-02-19 | 国家电网公司 | Oil head feedback device applied to axial flow movable propeller turbine and mounting technology of oil head feedback device |
| CN103711634A (en) * | 2013-12-29 | 2014-04-09 | 国家电网公司 | Magnetic ring stroke sensing type water turbine blade stroke feedback device |
| CN105697214A (en) * | 2016-01-27 | 2016-06-22 | 哈尔滨电机厂（昆明）有限责任公司 | Water turbine spray pipe capable of achieving buffered closing of needle tip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HARBIN ELECTRIC MACHINERY (KUNMING) CO., LTD. Free format text: FORMER NAME: KUNMING ELECTRIC MOTORS CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 650100 Kunming, Xishan District, Ma Street, spring road, No. 349 Patentee after: Harbin electric motor factory (Kunming) Co., Ltd. Address before: 650000, Ma 19 street, Xishan District, Yunnan, Kunming Patentee before: Kunming Electric Motor Co., Ltd. |
|
| 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: 20080702 Termination date: 20160724 |