CN2782973Y - Spring safety connecting lever mechanism for through flow water turbine - Google Patents
Spring safety connecting lever mechanism for through flow water turbine Download PDFInfo
- Publication number
- CN2782973Y CN2782973Y CNU2004201058317U CN200420105831U CN2782973Y CN 2782973 Y CN2782973 Y CN 2782973Y CN U2004201058317 U CNU2004201058317 U CN U2004201058317U CN 200420105831 U CN200420105831 U CN 200420105831U CN 2782973 Y CN2782973 Y CN 2782973Y
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- China
- Prior art keywords
- connecting lever
- offset
- pin
- spring
- shape connecting
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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 discloses a spring safety connecting lever mechanism for a through flow water turbine, which comprises two curve arms and a spring. The two curve arms are in an L shape and are symmetrically distributed at the both sides of a cylindrical pin, and the lower ends of the two curve arms are movably connected via the cylindrical pin. An eccentricity adjusting mechanism is arranged at the connection point of the two L-shaped curve arms, and both ends of the spring are fixedly connected to the top of each of the two L-shaped curve arms via a connection shaft. The utility model has the advantages of convenience, practicality, high automaticity and convenient installation and maintenance, and the utility model is a spring safety connecting lever mechanism for a through flow water turbine, which can effectively solve a series of problems brought by traditional shear pin structures.
Description
Technical field
The utility model relates to a kind of protective gear of tubular turbine movable guide vane, relates generally to a kind of tubular turbine spring safety link mechanism.
Background technique
In the water distributor of the disclosed tubular turbine of prior art; the most frequently used protective gear of movable guide vane is the break pin structure; when stator is closing in the closed procedure; if the foreign material in the current are stuck between two stators; adjacent two stators can not normally be closed; will cause on the shear plane of break pin moment increasing, be cut off up to it, other does not have the stator of foreign matter jam all normally to close.Because tubular turbine generally all is not provided with inlet valve at water intake; after so break pin is cut off; stator can not normally be closed; the swing that stator will not stop under the impact of current together with guide vane lever; bump also destroys adjacent stator and driving mechanism; for alleviating the damage that stator causes after out of hand; often on stator outer shroud and guide vane lever, limiting stopper is set; but limiting stopper can not limit the rotation of stator in minimum and maximum aperture scope; therefore stator and guide vane lever are cut off and the harm that random swing caused after out of hand can not be avoided fully at break pin; after being cut off, break pin must shut down; pull out the break pin of damage, allow out of control guide vane lever reset, the break pin that more renews; but also must prepare enough break pin spare unit, this has also increased the cost of product to a certain extent.
Technological scheme
The purpose of this utility model is to solve the problems of the technologies described above, provide a kind of more convenient, practical, automaticity is high, convenient for installation and maintenance, the tubular turbine spring safety link mechanism that can effectively solve a series of problems that traditional break pin structure brought.
The utility model is achieved through the following technical solutions:
A kind of tubular turbine spring safety link mechanism comprises two connecting levers and spring, and described two connecting levers are L-shaped, are symmetrically distributed in the straight pin both sides, and its lower end flexibly connects by straight pin; The joint of described two " L " shape connecting levers is provided with the offset regulating mechanism; Fixedly connected with the top of two " L " shape connecting levers by coupling shaft in the two ends of described spring.
Described offset regulating mechanism is that offset is adjusted screw, it is corresponding with the screw hole on " L " shape connecting lever that is positioned at front end that offset is adjusted screw, and offset adjust screw and pass offset adjustment screw hole after its front-end face contact with " L " shape connecting lever that is positioned at the rear end.
The connecting lever place of described two " L " shape connecting levers is arranged with pin-and-hole, and the line of centres of two pin-and-holes and the center of straight pin have certain offset.
Described one of them " L " shape connecting lever is connected with guide vane lever with cam pin by joint shaft bearing at the connecting lever place; Another " L " shape connecting lever is connected with control ring microtia handle with link pin by joint shaft bearing at the connecting lever place.
Between spring and coupling shaft, be provided with rotation and adjust nut.
The joint of described two " L " shape connecting levers also is provided with limit switch.
The working principle of tubular turbine spring safety link mechanism: open under nominal situation or when closing movable guide vane in the power station, guide vane servomotor promotes control ring and rotates, control ring passes to guide vane lever by little ear handle and safe connecting rod with operational torque, guide vane lever passes to movable guide vane by straight pin again, thereby drive the stator normal switch, in this course, steering force is all the time in the scope of design of safe connecting rod, this moment, the effect of safe connecting rod was the same with common hard connecting rod, the steering force of normal delivery stator.Shown in figure three, in the process of closing movable guide vane, if foreign matter is stuck between stator and causes adjacent two stators normally not close in the current, be that guide vane lever can not continue action, the steering force that act on the safe connecting rod this moment can increase gradually, when steering force exceeds the scope of design of safe connecting rod, " L " type connecting lever that links to each other with the little ear handle of control ring will rotate around straight pin, safe connecting rod begins action, distortion, this moment, limit switch can send alarm signal immediately, drive water distributor and open movable guide vane, allow current wash away to be stuck in foreign matter between stator, safe connecting rod also under the restoring force effect of spring from horizontal reset, and then normal guide vane closing, if once do not get rid of foreign matter, but perseveration.
Advantage of the present utility model is: spring safety link mechanism is applied to tubular turbine movable guide vane protective system; it is a kind of brand-new structure; can effectively solve a series of problems that traditional break pin structure is brought; can overcome break pin and destroy back movable guide vane destruction to adjacent guide vane linkage mechanism when out of hand; dismounting and replacing process are loaded down with trivial details; expend defectives such as a large amount of time and manpower; and every; unit only needs the safe connecting rod of 1/2nd movable guide vane numbers; and cancellation limit stoper; reduce cost of production significantly, shortened the repair and maintenance cycle in power station.
Description of drawings;
Fig. 1 is a structural representation of the present utility model,
Fig. 2 be the A-A of Fig. 1 to sectional view,
Fig. 3 is the worm's eye view of Fig. 1,
Fig. 4 is Fig. 1 user mode deformation pattern.
Mark among the figure:
1 is offset adjustment screw, and 2a is " L " type connecting lever, and 2b is " L " type connecting lever, 3 is cam pin, and 4 is supporting screw, and 5 is coupling shaft, 6 is attachment screw, and 7 are rotation adjustment nut, and 8 is spring, 10 is joint shaft bearing, and 11 is link pin, and 13 is the little ear handle of control ring, 14 is straight pin, 15 is guide vane lever, and 16 is limit switch, and 17 is pin-and-hole.
Embodiment
A kind of tubular turbine spring safety link mechanism comprises two connecting lever 2a, 2b and spring 8, and described two connecting lever 2a, 2b are L-shaped, are symmetrically distributed in straight pin 14 both sides, and its lower end flexibly connects by straight pin 14; The joint of described two " L " shape connecting lever 2a, 2b is provided with the offset regulating mechanism; Fixedly connected with the top of two " L " shape connecting lever 2a, 2b by coupling shaft 5 in the two ends of described spring 8.The effect of spring is to guarantee that the normal running power of safe connecting rod and stator are blocked causes automatically reseting behind the rod deformation.Described offset regulating mechanism is that offset is adjusted screw 1, it is corresponding with the screw hole on " L " shape connecting lever 2b that is positioned at front end that offset is adjusted screw 1, and offset adjust screw 1 and pass offset adjustment screw hole after its front-end face contact with " L " shape connecting lever 2a that is positioned at the rear end.The connecting lever place of described two " L " shape connecting lever 2a, 2b is arranged with pin-and-hole 17, the center of the line of centres of two pin-and-holes 17 and straight pin 14 has certain offset, this directly determines the size of spring safety link mechanism action power, and the big I of its offset is adjusted screw 1 by offset and adjusted.Described one of them " L " shape connecting lever 2a is connected with guide vane lever with cam pin 3 by joint shaft bearing 10 at the connecting lever place; Another " L " shape connecting lever 2b is connected with control ring microtia handle 13 with link pin 11 by joint shaft bearing 10 at the connecting lever place.The initial length of spring also can directly influence the steering force of safe connecting rod, therefore is provided with rotation and adjusts the length of installation that nut 7 is adjusted spring between spring 8 and coupling shaft 5.The joint of described two " L " shape connecting lever 2a, 2b also is provided with limit switch 16.
In with the operating device of spring safety link mechanism as tubular turbine movable guide vane protective gear; safe connecting rod and plain connecting rod gap are arranged; the safe connecting rod mechanism of half quantity only need be provided the whole show stator of a tubular turbine like this; second half adopts plain connecting rod mechanism; every suit spring safety link all needs to test in factory; adjust its steering force in scope of design and connecting rod does not deform; tighten offset then and adjust the locking nut of screw; and point welds, and integral body mails to the building site and installs then.
Claims (6)
1, a kind of tubular turbine spring safety link mechanism, comprise two connecting levers (2a, 2b) and spring (8), it is characterized in that: described two connecting levers (2a, 2b) are L-shaped, are symmetrically distributed in straight pin (14) both sides, and its lower end flexibly connects by straight pin (14); The joint of described two " L " shape connecting levers (2a, 2b) is provided with the offset regulating mechanism; Fixedly connected with the top of two " L " shape connecting levers (2a, 2b) by coupling shaft (5) in the two ends of described spring (8).
2, a kind of tubular turbine spring safety link according to claim 1 mechanism, it is characterized in that: described offset regulating mechanism is that offset is adjusted screw (1), it is corresponding with the screw hole on " L " shape connecting lever (2b) that is positioned at front end that offset is adjusted screw (1), and offset adjust screw (1) and pass offset adjustment screw hole after its front-end face contact with " L " shape connecting lever (2a) that is positioned at the rear end.
3, a kind of tubular turbine spring safety link according to claim 1 and 2 mechanism, it is characterized in that: the connecting lever place of described two " L " shape connecting levers (2a, 2b) is arranged with pin-and-hole (17), and the center of the line of centres of two pin-and-holes (17) and straight pin (14) has certain offset.
4, a kind of tubular turbine spring safety link according to claim 3 mechanism, it is characterized in that: described one of them " L " shape connecting lever (2a) is connected with guide vane lever with cam pin (3) by joint shaft bearing (10) at the connecting lever place; Another " L " shape connecting lever (2b) is connected with the little ear handle of control ring (13) with link pin (11) by joint shaft bearing (10) at the connecting lever place.
5, a kind of tubular turbine spring safety link according to claim 1 mechanism is characterized in that: be provided with rotation and adjust nut (7) between spring (8) and coupling shaft (5).
6, a kind of tubular turbine spring safety link according to claim 1 mechanism, it is characterized in that: the joint of described two " L " shape connecting levers (2a, 2b) also is provided with limit switch (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004201058317U CN2782973Y (en) | 2004-12-31 | 2004-12-31 | Spring safety connecting lever mechanism for through flow water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004201058317U CN2782973Y (en) | 2004-12-31 | 2004-12-31 | Spring safety connecting lever mechanism for through flow water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2782973Y true CN2782973Y (en) | 2006-05-24 |
Family
ID=36767959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004201058317U Expired - Lifetime CN2782973Y (en) | 2004-12-31 | 2004-12-31 | Spring safety connecting lever mechanism for through flow water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2782973Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100516372C (en) * | 2006-08-08 | 2009-07-22 | 四川东风电机厂有限公司 | Installation method of axle extend through flow type hydraulic turbine set |
-
2004
- 2004-12-31 CN CNU2004201058317U patent/CN2782973Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100516372C (en) * | 2006-08-08 | 2009-07-22 | 四川东风电机厂有限公司 | Installation method of axle extend through flow type hydraulic turbine set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGFANG ELECTRIC GROUP DONGFANG ELECTRIC MACHINE Free format text: FORMER OWNER: DONGFANG ELECTRICAL MACHINE CO., LTD. Effective date: 20100115 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100115 Address after: No 188, the Yellow River West Road, Deyang, Sichuan Province, 618000 Patentee after: Dongfang Electric Group Dongfang Motor Co., Ltd. Address before: No 188, the Yellow River West Road, Deyang, Sichuan Province, 618000 Patentee before: Dongfang Electric Machine Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141231 Granted publication date: 20060524 |