CN2460741Y - Hydraulic section shutting off device - Google Patents
Hydraulic section shutting off device Download PDFInfo
- Publication number
- CN2460741Y CN2460741Y CN00232365U CN00232365U CN2460741Y CN 2460741 Y CN2460741 Y CN 2460741Y CN 00232365 U CN00232365 U CN 00232365U CN 00232365 U CN00232365 U CN 00232365U CN 2460741 Y CN2460741 Y CN 2460741Y
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- valve
- throttle valve
- way throttle
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- mouth
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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 hydraulic section shutting off device, mainly comprising a leading travel valve, a throttle valve and a breaking cam, wherein, the throttle valve is replaced by a hydraulic controlled one-way throttle valve (3) which is arranged separately from the leading travel valve (2), the hydraulic controlled port A of the hydraulic controlled one-way throttle valve is communicated with the port A of the leading travel valve, the port D of the hydraulic controlled one-way throttle valve is communicated with the port C through a pipeline (4) and an adjustable throttling device (5), the port D of the hydraulic controlled one-way throttle valve is used as the valve port connected with the starting up port of a main pressure distributing valve, and the port C of the hydraulic controlled one-way throttle valve is used as the valve port connected with the starting up port of a servomotor (7).
Description
The utility model relates to a kind of hydraulic segmented shutoff device, belongs to the device that the control guide vanes of water turbine is closed.
The subsection and closed device of existing water wheels unit is made up of pilot valve, throttle valve, one-way valve and section cam, pilot valve and throttle valve fuse, promptly in same valve body, constitute sectioning valve, cam is fixed on the answer axle of servomotor driving mechanism, its flex point is clear and definite, use reliably, but also need one-way valve to be used, therefore bulky, pipeline is complicated, cost is high, installation is inconvenient.Because pilot valve and throttle valve fuse, promptly be contained in and constitute sectioning valve in the same valve body, can not selection standard spare, so pilot valve has oil leakage phenomenon, and also pilot valve and throttle valve can not split.
The purpose of this utility model is to design a kind of more reasonable structure, and volume is little, and cost is low, and performance well also can solve pilot valve and throttle valve splits and the hydraulic segmented shutoff device of the problem of leakage of oil.
The technical solution of the utility model is: this hydraulic segmented shutoff device, comprise guide's stroke valve, throttle valve and disjunction cam, its guide's stroke valve and throttle valve split, throttle valve replaces with liquid control one-way throttle valve 3, cancelled one-way valve, the hydraulic control mouth A of liquid control one-way throttle valve connects guide's stroke valve A ' mouth, the D mouth of liquid control one-way throttle valve is connected with its C mouth by pipeline 4 and adjustable device 5, form parallel pipeline, the D mouth of liquid control one-way throttle valve is as the valve port that is connected with the start mouth of main control valve, and the C mouth of liquid control one-way throttle valve is as the valve port that is connected with the start mouth of servomotor 7.
Above-mentioned hydraulic segmented shutoff device, its liquid control one-way throttle valve 3 is that liquid collecting control, unidirectional, throttling are the valve of one, it comprises valve body 3-5, loam cake 3-2, pedestal 3-8, adjustment mandrel 3-3, upper valve core 3-4, lower valve core 3-6, valve port C, valve port D, goes up the lower valve core coaxial line, have between upper valve core and the loam cake cavity of resorption 3-10 is arranged between epicoele 3-9, lower valve core and the pedestal, the valve body upper end has a control mouthful A to communicate with epicoele, from valve port C the restriction B that leads to cavity of resorption 3-10 is arranged, Returnning spring 3-7 is arranged between pedestal and the lower valve core.
The utility model has the advantages that:
(1) guide's stroke valve and throttle valve divide postpone, replace the pilot valve of design voluntarily with titer casting die guide stroke valve, do not have and leak.
(2) in system, be provided with the parallel pipeline 4 of D to C, a part of oil return freely passed through, thereby made liquid control one-way throttle valve can do lessly, and cancelled one-way valve, simplified system architecture greatly, reduced volume, reduced cost.
(3) adopt guide's stroke valve and liquid control one-way throttle valve arranged apart, guarantee power plant's arrangement convenience.
(4) section cam can be fixed in the servomotor driving mechanism answer rotating shaft, also can directly be fixed on the servomotor extension bar, can arrange according to each power plant's concrete condition.
(5) this subsection and closed device is pure machinery hydraulic system, all adopts mechanical rigid to connect, and can accurately adjust, and is safe and reliable.
Below accompanying drawing is described:
Fig. 1 is that the subsection and closed device structure reaches and main control valve, servomotor connection diagram, 1 is main control valve among the figure, the 2nd, guide's stroke valve, the 3rd, liquid control one-way throttle valve, the 4th, the parallel pipeline of liquid control one-way throttle valve valve port D to C, the 5th, adjustable device, the 6th, section cam, the 7th, servomotor, the 8th, roller, Ps are that pressure oil import, A are that control mouth, the A ＇ of liquid control one-way throttle valve is the hydraulic control hydraulic fluid port of guide's stroke valve.
Fig. 2 is the liquid control one-way throttle valve structural representation.3-1 is that adjustment screw, 3-2 are that loam cake, 3-3 are that adjustment mandrel, 3-4 are that upper valve core, 3-5 are that valve body, 3-6 are that lower valve core, 3-7 are that Returnning spring, 3-8 are that pedestal, 3-9 are epicoele, 3-10 cavity of resorption among the figure, and C is that valve port, D are that valve port, A are that control mouth, B are restrictions.
Further specify embodiment of the present utility model below in conjunction with accompanying drawing: the utility model has replaced former hydraulic control one-way valve and one-way throttle valve with the hydraulic pressure one-way throttle valve, liquid control one-way throttle valve comprises valve body 3-5, loam cake 3-2, pedestal 3-8, adjust mandrel 3-3, upper valve core 3-4, lower valve core 3-6, valve port C, valve port D, last lower valve core coaxial line, epicoele 3-9 is arranged between upper valve core and the loam cake, cavity of resorption 3-10 is arranged between lower valve core and the pedestal, its valve body upper end has a control mouthful A to communicate with epicoele 3-9, from valve port C the restriction B that leads to cavity of resorption is arranged, Returnning spring 3-7 is arranged between lower valve core and pedestal.This valve can be realized three kinds of stations:
1, forward: D is to C, normal open, and standard-sized sheet is for stator is opened fast.
2, reverse: C is to D, and when a control mouthful A came pressure oil, spool 3-4,3-6 were downward, and standard-sized sheet is the stator quick closedown.
3, reverse: C is to D, and when the A off-load, spool 3-4,3-6 make progress, and throttling is for stator is closed at a slow speed.
According to this valve principle, as long as spool and spring size coupling rationally, valve core diameter can select identical or differently up and down, all can realize above-mentioned three kinds of operating modes.
Liquid control one-way throttle valve is a key problem in technology of the present utility model, pilot valve selection standard hydraulic parts guide stroke valve at first, throttle valve adopts and designs liquid control one-way throttle valve voluntarily, both are arranged apart, remove one-way valve, the hydraulic control mouth A of liquid control one-way throttle valve connects guide's stroke valve A ' mouth, the D mouth of liquid control one-way throttle valve is connected with its C mouth by pipeline 4 and adjustable device 5, form parallel pipeline, the D mouth of liquid control one-way throttle valve is connected with the start mouth of main control valve, and the C mouth of liquid control one-way throttle valve is connected with the start mouth of servomotor 7.
Fig. 1 has provided system architecture, guide's stroke valve adopts titer casting die 3WMR6A50 type roller selector valve, D to the C mouth parallel pipeline (containing adjustable orifice plate) 4 of liquid control one-way throttle valve, section cam 6 can be fixed on the servomotor driving mechanism and reply in the rotating shaft, also can be fixed on the servomotor extension bar.During beginning, the A ' of pilot valve communicates with Ps, when servomotor is closed to the section cam of replying in the rotating shaft and pushes roller 8, guide's stroke valve core is risen, this moment, A ' communicated with T (being zero-pressure), the piston (lower valve core) of Pilot operated check valve throttling moves up and carries out throttling simultaneously, adjusts the position that screw is adjusted until the top.Begin in the closed procedure to realize shutdown slowly so servomotor closes, thereby reach the purpose of sequence closing.
The applying working condition explanation:
(1) servomotor is opened: main control valve start side pressure oil Ps to D, through the Pilot operated check valve throttle valve to C, straight-through servomotor open side because D → C is unimpeded, simultaneously also by parallel pipeline 4 by a part of flow, therefore starting shooting not influenced by segmentation.
(2) servomotor cuts out: main control valve shutdown pressure oil to servomotor closes pusher side, and the oil return of servomotor has two kinds of operating modes this moment by C → D:
(a) quick closedown: be shown position, this moment, section cam did not press guide's stroke valve core, and pressure oil is worked through the I position that A ' is pressed onto liquid control one-way throttle valve 3 by Ps, and fluid is straight-through by C → D, the oil circuit of parallel pipeline is unimpeded simultaneously, so be " quick closedown ".
(b) close at a slow speed, when servomotor closed a certain position (being corner position), section cam pressed guide's stroke valve core, made A ' lead to T (being zero-pressure), and this moment works in the II position of liquid control one-way throttle valve 3, and C, D are communicated with throttle valve.The oil return of just shutting down partly is subjected to throttling by the throttling of C in liquid control one-way throttle valve, so be " shutdown at a slow speed ".Realize sequence closing.
Adjust the adjustment screw of liquid control one-way throttle valve top, can change the orifice size between flow check piston and the valve body, thereby can change the motor speed of pass slowly after the segmentation.
The rotation section cam changes it and the relative position of replying rotating shaft, or the relative position of segmentation skewback and piston rod, just can change the position of segmentation flex point.
This subsection and closed device is pure mechanical structure, all adopts rigid connection, can accurately adjust, and after accent was appropriate, speed can not change again after segmentation flex point and the segmentation, and was safe and reliable.
Claims (2)
1, a kind of hydraulic segmented shutoff device, comprise guide's stroke valve, throttle valve and disjunction cam, it is characterized in that throttle valve liquid control one-way throttle valve (3), guide's stroke valve (2) splits with liquid control one-way throttle valve (3), the hydraulic control mouth (A) of liquid control one-way throttle valve is connected guide's stroke valve (A ') mouth, (D) of liquid control one-way throttle valve mouthful by pipeline (4) and adjustable device (5) and its C mouth connection, the D mouth of liquid control one-way throttle valve is as the valve port that is connected with the start mouth of main control valve, and (C) of liquid control one-way throttle valve mouthful as the valve port that is connected with the start mouth of servomotor (7).
2, hydraulic segmented shutoff device according to claim 1, it is characterized in that liquid control one-way throttle valve upper valve core (3-4) and lower valve core (3-6) coaxial line, epicoele (3-9) is arranged between upper valve core and the loam cake (3-2), cavity of resorption (3-10) is arranged between lower valve core and the pedestal (3-8), valve body (3-5) upper end has control mouthful (A) to communicate with epicoele (3-9), from valve port (C) restriction (B) that leads to cavity of resorption (3-10) is arranged, Returnning spring (3-7) is arranged between pedestal and the lower valve core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00232365U CN2460741Y (en) | 2000-11-09 | 2000-11-09 | Hydraulic section shutting off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00232365U CN2460741Y (en) | 2000-11-09 | 2000-11-09 | Hydraulic section shutting off device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2460741Y true CN2460741Y (en) | 2001-11-21 |
Family
ID=33595018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00232365U Expired - Fee Related CN2460741Y (en) | 2000-11-09 | 2000-11-09 | Hydraulic section shutting off device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2460741Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954066A (en) * | 2012-11-19 | 2013-03-06 | 无锡九条龙汽车设备有限公司 | Connecting method for speed changing loop adopting motion valve of hydraulic system |
| CN103306888A (en) * | 2013-06-21 | 2013-09-18 | 国家电网公司 | Hydraulic control type main pressure distributing valve with sequence closing function |
-
2000
- 2000-11-09 CN CN00232365U patent/CN2460741Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954066A (en) * | 2012-11-19 | 2013-03-06 | 无锡九条龙汽车设备有限公司 | Connecting method for speed changing loop adopting motion valve of hydraulic system |
| CN103306888A (en) * | 2013-06-21 | 2013-09-18 | 国家电网公司 | Hydraulic control type main pressure distributing valve with sequence closing function |
| CN103306888B (en) * | 2013-06-21 | 2015-10-07 | 国家电网公司 | A kind of hydraulic control main distributing valve with sequence closing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |