CN202140223U - Movable guide vane servomotor - Google Patents
Movable guide vane servomotor Download PDFInfo
- Publication number
- CN202140223U CN202140223U CN201120235327U CN201120235327U CN202140223U CN 202140223 U CN202140223 U CN 202140223U CN 201120235327 U CN201120235327 U CN 201120235327U CN 201120235327 U CN201120235327 U CN 201120235327U CN 202140223 U CN202140223 U CN 202140223U
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- CN
- China
- Prior art keywords
- piston rod
- piston
- head
- guide vane
- movable guide
- 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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Abstract
The utility model provides a movable guide vane servomotor, comprising a cylinder body, a front cylinder cover and a rear cylinder cover arranged at two end parts of the cylinder body, a piston arranged in the cylinder body, a piston rod connected with the piston, a locking block for locking the piston rod, and a push-pull rod head connected with the head part of the piston rod; the piston rod penetrates through two ends of the piston, the head part and the tail part of the piston rod extend out of the front cylinder cover and the rear cylinder cover respectively, and the locking block pushes against at the tail part of the piston rod in a locking state. The locking block is arranged at the tail part of the piston rod when in locking, and is hard to cause damage to the piston rod, a front guide sleeve and a rear guide sleeve can ensure the piston rod to move stably and smoothly, lateral force is not applied to the piston body, and the performance and the service life are greatly improved.
Description
Technical field
The utility model relates to the movable guide vane servomotor of water distributor in a kind of water turbine, is applied to the huge water wheel unit water distributor control that single-machine capacity surpasses 500MW.
Background technique
Water distributor is to let current evenly flow into the crucial portion cover of runner from all directions in the water turbine; The unlatching of movable guide vane simultaneously, to close also be the most essential steps during whole unit is opened, shut down, and the opening and closing of whole water distributor are promoted by the movable guide vane servomotor.Movable guide vane servomotor form is a lot; Large-scale unit is because civil engineering more than the 300MW, the needs that set structure is arranged, and to adopt the straight-cylinder servomotor that places in the foundation ditch be the stator main servomotor more; Its typical structure is seen shown in Figure 1; Piston 5 is positioned at piston rod 4 afterbodys, and cylinder body 1 two ends have oil inlet and outlet to connect oil pipe 31,32 to promote piston 5 open and close, and cylinder body 1 head is provided with guide shaft cover 2 and guarantees that piston rod 4 action are stable; Piston rod 4 stage casings are provided with clamping block 6, with guarantee unit shutdown lay down oil pressure after movable guide vane can not washed open by current.Cylinder body 1 head is connected with pull bar head 7, and pull bar head 7 is connected through connecting rod 8 with speed ring 9 or directly connects.Along with technical development; Domestic water power station single-machine capacity constantly increases; The thrust output of corresponding servomotor and size also constantly increase, and use traditional form straight-cylinder servomotor to have following problem: 1) servomotor has only anterior guide shaft cover, for stable guiding; Must on piston, increase guidance tape, this just causes piston stress.Along with the increase of unit output and size, the servomotor size increases, because the connection of the cause servomotor-connecting rod-speed ring of gravity can't be guaranteed complete level, the suffered lateral force of piston increases greatly, has a strong impact on servomotor life-span and working stability; 2) clamping block through two oil cylinders promotions of piston rod both sides, is stuck in the both sides in piston rod stage casing when locking, and piston rod receives lateral force, all is prone under normal use and the misoperation situation piston rod is caused damage.
The model utility content
The technical problem that the utility model will solve is to provide a kind of and locks conveniently, is difficult for causing the turbine gate mechanism of damage to use the moving vane servomotor to piston rod.
In order to solve the problems of the technologies described above; A kind of movable guide vane servomotor that the utility model provides; The front end housing of comprise cylinder body, being located at the cylinder body two end part with back cylinder cover, the piston that is positioned at cylinder body, the piston rod that links to each other with piston, be used for the clamping block of lock piston bar, the pull bar head that links to each other with piston rod head; Said piston rod passes piston two; The head of said piston rod and afterbody stretch out said front end housing and back cylinder cover respectively, and said clamping block withstands on said piston rod afterbody when lock state.
Preferably, also comprise front shaft sleeve and rear axle housing, said front shaft sleeve is fixed on the said front end housing and is enclosed within on the piston rod, and said rear axle housing is fixed on the said back cylinder cover and is enclosed within on the piston rod.
Preferably, said clamping block links to each other with a hydraulic jack.
Preferably, said pull bar head is threaded with said piston rod head, and said piston rod head has outside thread, and said pull bar head place has internal thread, and said pull bar head is through being screwed in the pre-load nut pretension of piston rod head.
Preferably, said front end housing and piston rod joint are provided with Front oil seal, and said back cylinder cover and piston rod joint are provided with Rear oil seal.
Preferably, said clamping block is a wedge-shaped blocks, and the rear of said back cylinder cover is provided with when lock state carries out spacing clamping block bearing to clamping block.
Preferably, comprise that also filler opening connects oil pipe and oil outlet connects oil pipe, said filler opening connects oil pipe and oil outlet and connects oil pipe and all be located on the cylinder body.
The movable guide vane servomotor of the utility model; Be positioned at the piston rod afterbody during clamping block locking, be difficult for piston rod is caused damage, preceding guide pin bushing can be guaranteed more steady and smooth of piston rod movement with the back guide pin bushing; Piston only does not receive lateral force, and performance and working life are greatly improved.
Description of drawings
Fig. 1 is that guide vane servomotor is arrived in the work of existing technology.
Fig. 2 is the movable guide vane servomotor of the utility model.
Embodiment
Further specify below in conjunction with the scheme of accompanying drawing the utility model.
Movable guide vane servomotor as shown in Figure 2; The front end housing 2 of comprise cylinder body 1, being located at cylinder body 1 two end part and back cylinder cover 3, the piston 5 that is positioned at cylinder body 1, the piston rod 4 that links to each other with piston 5, the clamping block 6 that is used for lock piston bar 4, the pull bar head 11 that links to each other with piston rod 4 heads; Piston rod 4 passes piston 5 two; The head of piston rod 4 and afterbody stretch out front end housing 2 and back cylinder cover 3 respectively, and clamping block 6 withstands on piston rod 4 afterbodys when lock state.
On front end housing 2, drive a circular groove, front shaft sleeve 8 is fixed in the circular groove of front end housing 2 and is enclosed within on the piston rod 4, on back cylinder cover 3, drives a circular groove equally, and rear axle housing 7 is fixed on the back cylinder cover 3 and is enclosed within on the piston rod 4.
Clamping block 6 links to each other with a hydraulic jack 13, drives the locking or unclamp piston rod 4 of rising or lower through hydraulic jack 13.
Wherein, pull bar head 11 is connected with piston rod 4 head threads, and piston rod 4 heads have outside thread, and pull bar head 11 places have internal thread, pre-load nut 12 pretensions of pull bar head 11 through being screwed in piston rod head.During installation, earlier pre-load nut 12 is through piston rod head, rotates pull bar head 11 then and adjust to required piston rod 4 length, again pre-load nut 12 is screwed, pre-load nut 12 is positioned at pull bar head 11 places with screw, pad.
Clamping block 6 is a wedge-shaped blocks; The rear of back cylinder cover 3 is provided with when lock state carries out spacing clamping block bearing 16 to clamping block 6, and the face that clamping block bearing 16 contacts with wedge-shaped blocks also can be a wedge surface, and the wedge surface of clamping block 6 cooperates with the wedge surface primary and secondary of clamping block bearing 16; Be convenient to when lock state; Further support limit clamping block 6 makes to reach better locking effect by not play up and down of clamping block 6.
Comprise that also the filler opening that is located on the cylinder body 1 connects oil pipe 14 and connects oil pipe 15 with oil outlet, promote piston 5 motions through the hydraulic oil circulation.
The preceding guide pin bushing of the utility model can be guaranteed more steady and smooth of piston rod movement with the back guide pin bushing, and piston only does not receive lateral force, and performance and working life are greatly improved, and is positioned at the piston rod afterbody during clamping block locking, is difficult for piston rod is caused damage.
More than just the utility model has been carried out exemplary explanation, the concrete implementation of the utility model is not limited thereto.The insubstantial modifications that design of any employing the utility model and technological scheme are carried out is all within the protection domain of the utility model.
Claims (7)
1. movable guide vane servomotor; The front end housing (2) of comprise cylinder body (1), being located at cylinder body (1) two end part and back cylinder cover (3), the piston (5) that is positioned at cylinder body (1), the piston rod (4) that links to each other with piston (5), the clamping block (6) that is used for lock piston bar (4), the pull bar head (11) that links to each other with piston rod (4) head; It is characterized in that: said piston rod (4) passes piston (5) two; The head of said piston rod (4) and afterbody stretch out said front end housing (2) and back cylinder cover (3) respectively, and said clamping block (6) withstands on said piston rod (4) afterbody when lock state.
2. movable guide vane servomotor according to claim 1; It is characterized in that: also comprise front shaft sleeve (8) and rear axle housing (7); Said front shaft sleeve (8) is fixed on said front end housing (2) and goes up and be enclosed within on the piston rod (4), and said rear axle housing (7) is fixed on said back cylinder cover (3) and goes up and be enclosed within on the piston rod (4).
3. movable guide vane servomotor according to claim 1 is characterized in that: said clamping block (6) links to each other with a hydraulic jack (13).
4. movable guide vane servomotor according to claim 1; It is characterized in that: said pull bar head (11) is connected with said piston rod (4) head threads; Said piston rod (4) head has outside thread; Said pull bar head (11) locates to have internal thread, pre-load nut (12) pretension of said pull bar head (11) through being screwed in piston rod head.
5. movable guide vane servomotor according to claim 1 is characterized in that: said front end housing (2) and piston rod (4) joint are provided with Front oil seal (10), and said back cylinder cover (3) and piston rod (4) joint are provided with Rear oil seal (9).
6. movable guide vane servomotor according to claim 1 is characterized in that: said clamping block (6) is a wedge-shaped blocks, and the rear of said back cylinder cover (3) is provided with when lock state carries out spacing clamping block bearing (16) to clamping block (6).
7. movable guide vane servomotor according to claim 1 is characterized in that: comprise that also filler opening connects oil pipe (14) and oil outlet connects oil pipe (15), said filler opening connects oil pipe (14) and oil outlet and connects oil pipe (15) and all be located on the cylinder body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120235327U CN202140223U (en) | 2011-07-05 | 2011-07-05 | Movable guide vane servomotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120235327U CN202140223U (en) | 2011-07-05 | 2011-07-05 | Movable guide vane servomotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202140223U true CN202140223U (en) | 2012-02-08 |
Family
ID=45551283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120235327U Expired - Fee Related CN202140223U (en) | 2011-07-05 | 2011-07-05 | Movable guide vane servomotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202140223U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852695A (en) * | 2012-09-18 | 2013-01-02 | 哈尔滨电机厂有限责任公司 | Manual and hydraulic integrated locking device |
| CN109500090A (en) * | 2018-12-18 | 2019-03-22 | 天津市中重科技工程有限公司 | A kind of removable memorial archway mill roll rack auxiliary push-off device |
-
2011
- 2011-07-05 CN CN201120235327U patent/CN202140223U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852695A (en) * | 2012-09-18 | 2013-01-02 | 哈尔滨电机厂有限责任公司 | Manual and hydraulic integrated locking device |
| CN109500090A (en) * | 2018-12-18 | 2019-03-22 | 天津市中重科技工程有限公司 | A kind of removable memorial archway mill roll rack auxiliary push-off device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20130705 |