CN203548041U - Anti-play shear pin for water turbine - Google Patents
Anti-play shear pin for water turbine Download PDFInfo
- Publication number
- CN203548041U CN203548041U CN201320676679.7U CN201320676679U CN203548041U CN 203548041 U CN203548041 U CN 203548041U CN 201320676679 U CN201320676679 U CN 201320676679U CN 203548041 U CN203548041 U CN 203548041U
- Authority
- CN
- China
- Prior art keywords
- break pin
- pin body
- shear pin
- water turbine
- arm
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 239000002344 surface layer Substances 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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
An anti-play shear pin for a water turbine comprises a shear pin body which is connected with a duplex arm and a rotating arm of a transmission device of a water guiding mechanism of the water turbine, the upper end of the shear pin body is provided with an upper end cover with a locating effect, the diameter of the upper end cover is larger than the diameter of the shear pin body, a pin hole is formed in the lower end of the shear pin body, the shear pin body is inserted between the duplex arm and the rotating arm, one end of the shear pin body after being inserted is limited by the upper end cover, the other end of the shear pin body extends out of the rotating arm, and the lower end of the shear pin body is fixed through a locating pin inserted to the pin hole. The anti-play shear pin has the advantages that the structure is simple, upward play of the shear pin body is avoided, cost is low, and a unit is prevented from losing control, and the anti-play shear pin is suitable for improvement of an existing anti-play shear pin for a water turbine.
Description
Technical field
The utility model relates to a kind of water turbine Anti-moving break pin.
Background technique
The water distributor transmission device of at present conventional water turbine generally comprises control ring, duplex arm, pivoted arm, break pin etc., wherein one end of pivoted arm is fixed on the guide vane teunnion of water distributor, one end of duplex arm is connected with the other end of pivoted arm by break pin, the other end of duplex arm is connected with control ring by link pin, described water distributor: the current that make to enter before runner form rotation, and can change the incident angle of current, when generator load changes, with it carry out adjust flux, during normal and accidental shutdown, with it block current, described duplex arm also also claims connecting rod, it is the transmission part for connecting control ring and pivoted arm, can change by the length of adjusting it rotation angle of stator, break pin is one of water turbine four large protection mechanisms, signal generator is equipped with in break pin inside, when stator blocks when motionless for some reason, first break pin is cut off and is protected other transmission part, guarantee unit safety stable operation, what described duplex arm generally adopted is ear handle drive mechanism, when but the connecting plate of pivoted arm is connected with the duplex arm of ear handle drive mechanism, because making break pin, the existence of ear handle structure is subject to the effect of additional bending moment, and because break pin in the vertical direction is not subject to any constraint, in gate linkage course of action, the impact of the factors such as the moving and connecting rod own level deviation of controlled Huantiao, often there is violent swashing in break pin, its amount of swashing generally can reach 10mm～20mm, break pin acutely swashes and has directly caused following three aspects: adverse effect: 1, axle sleeve lifting surface area is reduced and unbalance stress, cause axle sleeve heavy wear, even there is local extrusion-deformation (the axle sleeve replacement cycle shortens), 2, make break pin be subject to the effect of huge additional bending moment, cause maximum stress on its disrumpent feelings cross section to reach the ultimate strength of material itself, the moment that finally causes break pin acutely to swash at duplex arm ruptures (at power station operation initial stage, the quantity of the improper fracture of every machine break pin is 10 left and right), if 3 break pins are scurried out completely, will inevitably cause stator out of control, serious words also can cause adjacent two stator break pins to cut off, or cause that unit is out of control.
Model utility content
The purpose of this utility model be for the deficiencies in the prior art provide a kind of simple in structure, prevent from altering on break pin, with low cost, prevent unit water turbine out of control Anti-moving break pin.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of water turbine Anti-moving break pin, comprise break pin body, described break pin body connects duplex arm and the pivoted arm of turbine gate mechanism transmission device, the upper end of described break pin body is provided with diameter and is greater than the upper end cap that break pin diameter plays the role of positioning, the lower end of described break pin is provided with pin rod hole, described break pin is inserted between duplex arm and pivoted arm, break pin one end after plug-in mounting is spacing by upper end cap, and the other end stretches out pivoted arm and by the locating stud being inserted in described pin rod hole, the lower end of described break pin located.
Described break pin is arranged on described duplex arm by nylon sleeve.
The surface layer of described break pin is provided with stainless steel lining.
The surface layer of described break pin is provided with oxidation film layer.
Adopt said structure, the utlity model has following advantage:
1, the break pin that the utility model is connected with pivoted arm by improving duplex arm, by the upper end cap and the pin rod hole that increase on break pin, thereby thereby insert locating stud by upper end cap with in pin rod hole, prevent from altering on break pin, thereby prevent from altering on break pin caused cutting off;
2, by the surface layer at break pin, stainless steel lining is set in addition, so both increased the strength character of break pin, can prevent from causing because of humid environment again the generation of body corrosion, reduce the frictional force that axle sleeve and break pin relative motion produce, reduce the frequency that break pin is cut off;
3, break pin is arranged on described duplex arm by nylon sleeve, because nylon sleeve has that mechanical strength is high, bearing capacity is large, wear resistance is good, anti-aging, long service life, do not hinder the advantages such as antithesis, therefore can improve the mechanical property of this device.
Accompanying drawing explanation
Fig. 1 is that the utility model is arranged on the structural representation on turbine gate mechanism transmission device;
Fig. 2 (a) is structural representation of the present utility model;
Fig. 2 (b) is the sectional view of Fig. 2 (a);
Fig. 3 is the structural representation that the utility model is connected with duplex arm and pivoted arm.
Embodiment
Below in conjunction with accompanying drawing, further describe the embodiment of this patent.
As shown in Figure 2 to Figure 3, a kind of water turbine Anti-moving break pin, comprise break pin body 3, described break pin body 3 connects the duplex arm 4 and pivoted arm 2 of turbine gate mechanism transmission device, the upper end of described break pin body 3 is provided with diameter and is greater than the upper end cap 31 that break pin body 3 diameters play the role of positioning, the lower end of described break pin body 3 is provided with pin rod hole 32, described break pin body 3 is inserted between duplex arm 4 and pivoted arm 2, break pin body 3 one end after plug-in mounting are spacing by upper end cap 31, the other end stretches out pivoted arm 2 and by the locating stud 33 being inserted in described pin rod hole 32, the lower end of described break pin body 3 is located, as shown in Figure 1, described turbine gate mechanism transmission device comprises control ring 6, duplex arm 4, pivoted arm 2, link pin 5 and break pin body 3, one end of pivoted arm 2 is fixed on the guide vane teunnion of water distributor, one end of described duplex arm 4 is connected with pivoted arm 2 by break pin body 3, the other end is connected with control ring 6 by link pin 5.The surface layer of described break pin body 3 is provided with stainless steel lining 34.
Claims (4)
1. a water turbine Anti-moving break pin, comprise break pin body, described break pin body connects duplex arm and the pivoted arm of turbine gate mechanism transmission device, it is characterized in that: the upper end of described break pin body is provided with diameter and is greater than the upper end cap that break pin body diameter plays the role of positioning, the lower end of described break pin body is provided with pin rod hole, described break pin body is inserted between duplex arm and pivoted arm, break pin body one end after plug-in mounting is spacing by upper end cap, the other end stretches out pivoted arm and by the locating stud being inserted in described pin rod hole, the lower end of described break pin body is located.
2. water turbine according to claim 1 Anti-moving break pin, is characterized in that: described break pin body is arranged on described duplex arm by nylon sleeve.
3. water turbine according to claim 1 and 2 Anti-moving break pin, is characterized in that: the surface layer of described break pin body is provided with stainless steel lining.
4. water turbine according to claim 1 and 2 Anti-moving break pin, is characterized in that: the surface layer of described break pin body is provided with oxidation film layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320676679.7U CN203548041U (en) | 2013-10-30 | 2013-10-30 | Anti-play shear pin for water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320676679.7U CN203548041U (en) | 2013-10-30 | 2013-10-30 | Anti-play shear pin for water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548041U true CN203548041U (en) | 2014-04-16 |
Family
ID=50466168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320676679.7U Expired - Fee Related CN203548041U (en) | 2013-10-30 | 2013-10-30 | Anti-play shear pin for water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548041U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033316A (en) * | 2014-06-12 | 2014-09-10 | 国家电网公司 | Shear pin component for preventing double-connected arm from raising |
-
2013
- 2013-10-30 CN CN201320676679.7U patent/CN203548041U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033316A (en) * | 2014-06-12 | 2014-09-10 | 国家电网公司 | Shear pin component for preventing double-connected arm from raising |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20181030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |