CN201351572Y - Automatic protection and shutdown device for grid-dropout of small hydraulic generator - Google Patents
Automatic protection and shutdown device for grid-dropout of small hydraulic generator Download PDFInfo
- Publication number
- CN201351572Y CN201351572Y CNU2008201898356U CN200820189835U CN201351572Y CN 201351572 Y CN201351572 Y CN 201351572Y CN U2008201898356 U CNU2008201898356 U CN U2008201898356U CN 200820189835 U CN200820189835 U CN 200820189835U CN 201351572 Y CN201351572 Y CN 201351572Y
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- CN
- China
- Prior art keywords
- clutch
- switch
- manual
- auto
- net
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- 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 - Lifetime
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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
Abstract
The utility model relates to an automatic protection and shutdown device for the grid-dropout of a small hydraulic generator, which consists of a direct current power supply, a manual-automatic integrated changeover switch, a protection switch, a grid-dropout alarm de-excitation relay, a generator excitation circuit, an operation relay, a direct current motor, a speed-reduction transmission mechanism, a hand wheel, a clutch, a hydroturbine speed governor and a termination switch. The utility model has the advantages that the volume of the device is small, the cost is low, the operation is safe, the performance is reliable and the installation is convenient. The device can be used to automatically protect the hydraulic generator unit and shut down the hydraulic generator unit when the generator is dropped out with the grid during the operation of the hydraulic generator unit of the small hydropower station.
Description
Technical field
The utility model relates to a kind of small hydro turbine, is specifically related to a kind of small hydro turbine and falls the network automatic protection arresting gear, belongs to the hydraulic power generation technology field.
Background technique
What the hydraulic generator unit of small hydropower station was afraid of at work most is to fall net (generator and electrical network open circuit suddenly during generating), in case fall net, the hydraulic generator unit will lose load and mains frequency, thereby lose control to generating unit speed, at this moment the staff must close guide vanes of water turbine in 2 minutes, caused otherwise generating unit speed will improve very fast to fly the untoward incidents event.Flying the contrary too high centrifugal force that produces can cause unit to disintegrate, factory building destroys, devastating disasters such as casualties, meanwhile, the voltage that generator sends also improves very fast, too high voltage can puncture the isolation layer of generator windings, electrical distribution system and transmission system etc., causes the blast of whole system, burns.Consequence is beyond imagination.Especially at thunderstorm season, the dry season is the height invention of falling net, makes the generating staff have to be in state work at full stretch for a long time.
The model utility content
Small hydro turbine falls the network automatic protection arresting gear, just the model utility device of inventing in order to solve existing problem in the background technique.
In order to achieve the above object; we have adopted following technological scheme: a kind of small hydro turbine falls the network automatic protection arresting gear, by DC electrical source, auto-manual throw over switch, protective switch, fall to net warning demagnetization relay, fall the net alarm, excitation circuit, operation relay, direct current generator, reduction gearing mechanism, handwheel, clutch, hydrogovernor and termination switch form.Wherein, DC electrical source links to each other with the operation relay with the auto-manual throw over switch respectively by lead, the auto-manual throw over switch by lead with start protective switch and link to each other, protective switch by lead respectively with fall to net warning demagnetization relay and link to each other with the switch that terminates.Fall to net warning demagnetization relay and connect to fall net alarm, excitation circuit and termination switch respectively by lead again.Falling to net warning demagnetization relay is used for cutting off field circuit after control is fallen the net alarm work and fallen net.The operation relay links to each other with the termination switch by lead.Be connected by hand wheel shaft between handwheel and the hydrogovernor, have clutch slot on the hand wheel shaft, clutch is installed on the hand wheel shaft, one end of clutch is fixed on the driven sprocket, the other end upside is equipped with the auto-manual clutch pin, being threaded on screw thread in the auto-manual clutch pin and the clutch, and lock with nut, make through hole in its guide of auto-manual clutch pin, movable lug pin and spring are arranged in the cover, have chute on the guide and move up and down for the movable lug pin, trough rim is opened selective pin location when manual, a hole.Reduction gearing mechanism is made up of speed reducer, drive sprocket, driven sprocket, chain and screw rod.Driven sprocket is installed on the clutch, adopts screw rod to be connected between speed reducer and the hydrogovernor.Protective switch is installed on the universal circuit breaker of distribution board, or utilizes the vacant contact on the omnipotent electrical circuit breakers, detects the net signal.The termination switch is installed in hydrogovernor inside, is used to detect the signal that water turbine cuts out.
Description of drawings
Fig. 1 the utility model structural representation
Among the figure: 1. DC electrical source; 2. auto-manual throw over switch; 3. protective switch; 4. fall to net warning demagnetization relay; 5. fall the net alarm; 6. excitation circuit; 7. operation relay; 8. direct current generator; 9. reduction gearing mechanism; 10. handwheel; 11. clutch; 12. hydrogovernor; 13. termination switch; 14. speed reducer; 15. drive sprocket; 16. driven sprocket; 17. chain; 18. screw rod; 19. spiral case; 20. auto-manual clutch pin.
Embodiment
Below we are further described below the utility model in conjunction with the accompanying drawings.
During the work of hydraulic generator unit, we throw in auto-manual throw over switch 2 at automated location, also the pin of auto-manual clutch pin 20 are thrown at automated location simultaneously.
During protective gear work, DC electrical source 1 electric current flows through auto-manual throw over switch 2 through lead and flow to protective switch 3 through lead again.Protective switch 3 is contained on the universal circuit breaker of distribution board; when net occurring falling; universal circuit breaker will disconnect; connect protective switch 3 when disconnecting; electric current again through lead flow to net warning demagnetization relay 4, through 4 adhesives of warning demagnetization relay, at this moment fall net alarm 5 power contact heads and connect and to begin to report to the police.Simultaneously, field circuit 6 contacts disconnect and carry out demagnetization, thereby make loss of exicitation and no-voltage output.Electric current by warning demagnetization relay flows through termination switch 13 through lead again, flow through the electric current of termination behind the switch 13 again after lead flows through 7 adhesives of operation relay, flow to direct current generator 8 through lead again, make direct current generator 8 entrys into service, thereby drive reduction gearing mechanism 9, drive driven sprocket 16 by chain 17 again, make clutch 11 entrys into service that are connected on the driven sprocket 16, in the operation process auto-manual clutch pin 20 under the pressure of spring with hand wheel shaft on the interlock of clutch cotter way, make hydrogovernor 12 entrys into service.When turning round when hydrogovernor 12 cuts out fully, termination switch 13 disconnects, and at this moment control system, hydraulic turbine generator system will all quit work.Fall net alarm 5 and will continue to report to the police, find net, just stop to report to the police and auto-manual throw over switch 2 is transferred to manual position until the staff.This moment, the whole protecting process was finished.The whole automations of whole protecting stopping process, the influence of adopting DC electrical source not had a power failure by electrical network and generator.
Claims (5)
1. a small hydro turbine falls the network automatic protection arresting gear; by DC electrical source (1); auto-manual throw over switch (2); protective switch (3); fall to net warning demagnetization relay (4); fall net alarm (5); excitation circuit (6); operation relay (7); direct current generator (8); reduction gearing mechanism (9); handwheel (10); clutch (11); hydrogovernor (12) and termination switch (13) are formed; it is characterized in that: DC electrical source (1) links to each other with operation relay (7) with auto-manual throw over switch (2) respectively by lead; auto-manual throw over switch (2) links to each other with protective switch (3) by lead, protective switch (3) by lead respectively with fall to net warning demagnetization relay (4) with the termination switch (13) link to each other.Fall to net warning demagnetization relay (4) and connect to fall net alarm (5), excitation circuit (6) and termination switch (13) respectively by lead again, operation relay (7) links to each other with termination switch (13) by lead, be connected by hand wheel shaft between handwheel (10) and the hydrogovernor (12), clutch (11) is installed on the hand wheel shaft.
2. small hydro turbine according to claim 1 falls the network automatic protection arresting gear; it is characterized in that described reduction gearing mechanism (9) is made up of speed reducer (14), drive sprocket (15), driven sprocket (16), chain (17) and screw rod (18); driven sprocket (16) is installed on the clutch (11), adopts screw rod (7) to be connected between speed reducer (6) and the hydrogovernor (12).
3. small hydro turbine according to claim 1 falls the network automatic protection arresting gear, it is characterized in that described protective switch (3) is installed on the universal circuit breaker of distribution board, or utilizes the vacant contact on the omnipotent electrical circuit breakers, detects the net signal.
4. small hydro turbine according to claim 1 falls the network automatic protection arresting gear, it is characterized in that described termination switch (10) is installed in hydrogovernor (12) inside.
5. small hydro turbine according to claim 1 falls the network automatic protection arresting gear; it is characterized in that described clutch (11) is installed on the hand wheel shaft; have clutch slot on the hand wheel shaft; one end of clutch (11) is fixed on the driven sprocket (16); the other end upside is equipped with auto-manual clutch pin (20); being threaded on screw thread in the auto-manual clutch pin (20) and the clutch (11); and lock with nut; make through hole in auto-manual clutch pin (20) guide; in movable lug pin and spring are arranged; have chute on the guide and move up and down for the movable lug pin, trough rim is opened selective pin location when manual, a hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201898356U CN201351572Y (en) | 2008-02-29 | 2008-12-16 | Automatic protection and shutdown device for grid-dropout of small hydraulic generator |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820007757 | 2008-02-29 | ||
| CN200820007757.3 | 2008-02-29 | ||
| CNU2008201898356U CN201351572Y (en) | 2008-02-29 | 2008-12-16 | Automatic protection and shutdown device for grid-dropout of small hydraulic generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201351572Y true CN201351572Y (en) | 2009-11-25 |
Family
ID=41374960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201898356U Expired - Lifetime CN201351572Y (en) | 2008-02-29 | 2008-12-16 | Automatic protection and shutdown device for grid-dropout of small hydraulic generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201351572Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242243A (en) * | 2013-06-09 | 2014-12-24 | 成都昊地科技有限责任公司 | Novel protection device for non-normal shutdown of hydraulic generator |
| CN104265557A (en) * | 2014-09-12 | 2015-01-07 | 福建亿华源能源管理有限公司 | PWM (Pulse Width Modulation) control based water turbine direct current electric control speed regulating device |
| CN104538929A (en) * | 2015-01-16 | 2015-04-22 | 中国电建集团成都勘测设计研究院有限公司 | Intertrip circuit avoiding self-excitation overvoltage of small hydro-generator |
| CN104976044A (en) * | 2015-07-03 | 2015-10-14 | 李俊杰 | Air pressure full-automatic control small hydro-electric generating set system |
-
2008
- 2008-12-16 CN CNU2008201898356U patent/CN201351572Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242243A (en) * | 2013-06-09 | 2014-12-24 | 成都昊地科技有限责任公司 | Novel protection device for non-normal shutdown of hydraulic generator |
| CN104265557A (en) * | 2014-09-12 | 2015-01-07 | 福建亿华源能源管理有限公司 | PWM (Pulse Width Modulation) control based water turbine direct current electric control speed regulating device |
| CN104538929A (en) * | 2015-01-16 | 2015-04-22 | 中国电建集团成都勘测设计研究院有限公司 | Intertrip circuit avoiding self-excitation overvoltage of small hydro-generator |
| CN104538929B (en) * | 2015-01-16 | 2018-01-26 | 中国电建集团成都勘测设计研究院有限公司 | Prevent shunt tripping circuit of the small hydro turbine from excitatory overvoltage |
| CN104976044A (en) * | 2015-07-03 | 2015-10-14 | 李俊杰 | Air pressure full-automatic control small hydro-electric generating set system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091125 Effective date of abandoning: 20130703 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned | ||
| DD01 | Delivery of document by public notice |
Addressee: Feng Xiaozhi Document name: Notification of Passing Examination on Formalities |