CN103670879A - Servomotor - Google Patents
Servomotor Download PDFInfo
- Publication number
- CN103670879A CN103670879A CN201310618051.6A CN201310618051A CN103670879A CN 103670879 A CN103670879 A CN 103670879A CN 201310618051 A CN201310618051 A CN 201310618051A CN 103670879 A CN103670879 A CN 103670879A
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- CN
- China
- Prior art keywords
- piston rod
- piston
- servomotor
- locking device
- cylinder body
- 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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- 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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Abstract
The invention discloses a servomotor comprising a cylinder block with an internal piston and an internal piston rod. One end of the piston rod penetrates a front cylinder cover of the cylinder block, and the penetrating end of the piston rod is connected with a pin. A locking device used for locking the piston rod and a limit switch used for detecting travel of the piston rod are disposed above the penetrating end of the piston rod. The limit switch comprises a scale plate fixed on one side of the locking device and a sliding rod connected with the piston rod. Space between the piston and the cylinder block is filled with two seal washers, the seal washers stack from left to right, and openings of the seal washers stagger. The servomotor with the structure has the advantages that the piston rod can be locked through the locking device, and each servomotor can be adjusted and maintained independently with no need for halting a water turbine; the limit switch with the scale plate can detect the travel of the piston rod, mounting and monitoring are facilitated, and the seal washers which are stacked with the openings staggering have the effect of preventing internal leakage.
Description
Technical field
The present invention relates to a kind of parts of hydraulic turbine generator water distributor, particularly a kind of servomotor.
Background technique
Existing servomotor is not because being with piston rod locking device; during maintenance; whole water turbine must be shut down and overhauled; during maintenance; the water in outside easily enters in cylinder body; make profit mixed mutually; emulsification occurs, and in addition, the stroke of piston rod generally adopts displacement transducer to monitor; when just installation is not switched on; can not debug stroke, also exist piston and cylinder body seal not tight simultaneously, because generally adopting at present the sealing gasket of opening to seal; cause the generation of internal leakage, make piston rod stroke inaccurate.
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 provides a kind of maintenance convenient, energy lock piston bar, the servomotor that detects piston rod stroke and prevent internal leakage.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of servomotor, the cylinder body that comprises built-in piston and piston rod, wherein one end of piston rod passes from the front end housing of cylinder body, the traversing through end of this piston rod is connected with bearing pin, the top of the traversing through end of described piston rod is provided with for the locking device of lock piston bar with for detection of the position limit switch of piston rod stroke, and the trip switch comprises the scale plate and the slide bar being connected with piston rod that is fixed on locking device one side; Between described piston and cylinder body, be filled with at least one seal washer.
Described seal washer is the O type circle with opening, is filled with the seal washer that two left and right stack and opening staggers places between described piston and cylinder body.
Described locking device is a telescopic oil cylinder.
The present invention adopts after said structure, and above-mentioned locking device can lock piston rod, can each servomotor be adjusted separately, be overhauled, and does not need whole water turbine to shut down; In addition, with the position limit switch of scale plate, can detect the stroke of piston rod, convenient installation and monitoring, the seal washer that opening staggers and stacks, has effectively prevented the generation of internal leakage.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of servomotor of the present invention.
Wherein have: 1. cylinder body; 2. piston; 3. piston rod; 4. front end housing; 5. bearing pin; 6. locking device; 7. scale plate; 8. slide bar; 9. seal washer.
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 servomotor, the cylinder body 1 that comprises built-in piston 2 and piston rod 3, wherein one end of piston rod 3 passes from the front end housing 4 of cylinder body 1, the traversing through end of this piston rod 3 is connected with bearing pin 5, the top of the traversing through end of described piston rod 3 is provided with for the locking device 6 of lock piston bar 3 with for detection of the position limit switch of piston rod 3 strokes, and the trip switch comprises the scale plate 7 and the slide bar 8 being connected with piston rod 3 that is fixed on locking device 6 one sides; Between described piston 2 and cylinder body 1, be filled with at least one seal washer 9.
Above-mentioned seal washer 9 is the O type circle with opening, between piston 2 and cylinder body 1, be preferably and be filled with the seal washer 9 that two left and right (for the left and right order in Fig. 1) stack and opening staggers and places, also can be 3 or a plurality of stacking, according to the width of piston 2, determine, effectively prevent the generation of cylinder body 1 interior internal leakage.
Described locking device 6 is a telescopic oil cylinder, by what control in this telescopic oil cylinder flexible piston rod, flexiblely carrys out lock piston bar 3.During maintenance, can each servomotor be adjusted separately, be overhauled, not need whole water turbine to shut down maintenance.
In addition, the above-mentioned position limit switch with scale plate 7 can detect the stroke of piston rod 3, when piston rod 3 is flexible, to be with moving slide-bar 8 to move on scale plate 7, by the scale of observing on scale plate 7, change, can read easily the stroke of piston rod 3, convenient installation and monitoring.
Claims (3)
1. a servomotor, the cylinder body (1) that comprises built-in piston (2) and piston rod (3), wherein one end of piston rod (3) passes from the front end housing (4) of cylinder body (1), the traversing through end of this piston rod (3) is connected with bearing pin (5), it is characterized in that: the top of the traversing through end of described piston rod (3) is provided with for the locking device (6) of lock piston bar (3) with for detection of the position limit switch of piston rod (3) stroke, and the trip switch comprises the scale plate (7) and the slide bar (8) being connected with piston rod (3) that is fixed on locking device (6) one sides; Between described piston (2) and cylinder body (1), be filled with at least one seal washer (9).
2. servomotor according to claim 1, is characterized in that: described seal washer (9) is the O type circle with opening, is filled with the seal washer (9) that two left and right stack and opening staggers places between described piston (2) and cylinder body (1).
3. servomotor according to claim 1, is characterized in that: described locking device (6) is a telescopic oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310618051.6A CN103670879A (en) | 2013-11-29 | 2013-11-29 | Servomotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310618051.6A CN103670879A (en) | 2013-11-29 | 2013-11-29 | Servomotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103670879A true CN103670879A (en) | 2014-03-26 |
Family
ID=50309444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310618051.6A Pending CN103670879A (en) | 2013-11-29 | 2013-11-29 | Servomotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103670879A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112325768A (en) * | 2020-10-16 | 2021-02-05 | 葛洲坝测绘地理信息技术有限公司 | Precise measurement method for mounting servomotor of hydroelectric generating set based on laser tracking measurement |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS551437A (en) * | 1978-06-21 | 1980-01-08 | Hitachi Ltd | Servo-motor automatic centering device |
| CN201258814Y (en) * | 2008-09-18 | 2009-06-17 | 天津市天发重型水电设备制造有限公司 | Assembling structure of water guide mechanism servo for hydroturbine |
| CN201588731U (en) * | 2009-04-28 | 2010-09-22 | 湖南雪峰机电设备制造有限公司 | Water turbine speed regulating control mechanism |
| CN102865244A (en) * | 2012-06-19 | 2013-01-09 | 江苏航天水力设备有限公司 | Oil-supply head of horizontal water pump or water turbine |
| CN203190935U (en) * | 2013-03-26 | 2013-09-11 | 国电大渡河瀑布沟发电有限公司 | Stroke measuring device for water-turbine guide vane |
-
2013
- 2013-11-29 CN CN201310618051.6A patent/CN103670879A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS551437A (en) * | 1978-06-21 | 1980-01-08 | Hitachi Ltd | Servo-motor automatic centering device |
| CN201258814Y (en) * | 2008-09-18 | 2009-06-17 | 天津市天发重型水电设备制造有限公司 | Assembling structure of water guide mechanism servo for hydroturbine |
| CN201588731U (en) * | 2009-04-28 | 2010-09-22 | 湖南雪峰机电设备制造有限公司 | Water turbine speed regulating control mechanism |
| CN102865244A (en) * | 2012-06-19 | 2013-01-09 | 江苏航天水力设备有限公司 | Oil-supply head of horizontal water pump or water turbine |
| CN203190935U (en) * | 2013-03-26 | 2013-09-11 | 国电大渡河瀑布沟发电有限公司 | Stroke measuring device for water-turbine guide vane |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112325768A (en) * | 2020-10-16 | 2021-02-05 | 葛洲坝测绘地理信息技术有限公司 | Precise measurement method for mounting servomotor of hydroelectric generating set based on laser tracking measurement |
| CN112325768B (en) * | 2020-10-16 | 2021-08-24 | 葛洲坝测绘地理信息技术有限公司 | Precise measurement method for mounting servomotor of hydroelectric generating set based on laser tracking measurement |
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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 |
Application publication date: 20140326 |
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| RJ01 | Rejection of invention patent application after publication |