JPS5627076A - Controller for hydraulic machinery - Google Patents
Controller for hydraulic machineryInfo
- Publication number
- JPS5627076A JPS5627076A JP10078379A JP10078379A JPS5627076A JP S5627076 A JPS5627076 A JP S5627076A JP 10078379 A JP10078379 A JP 10078379A JP 10078379 A JP10078379 A JP 10078379A JP S5627076 A JPS5627076 A JP S5627076A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- oil
- valve
- servomotor
- boosted
- 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
Links
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
Landscapes
- Hydraulic Turbines (AREA)
Abstract
PURPOSE: To reduce the area needed for installing a servomotor and the apparatus cost by switching to the boosted pressure-oil system when the differential pressure (or differential pressure ratio) between the opening and closing sides of the servomotor is above a set point.
CONSTITUTION: To close the inlet valve, a distributing valve 9 is switched to change over a port 9a to the drain oil side and a port 9b to the pressure-oil side. Since the differential pressure berween the opening and closing sides is low at a normal operation, a switching valve 10 blocks the boosted pressure oil. Consequently, pressure oil passes through a by-pass line, opens a check valve 16, flows in the closing side of a servomotor piston 5, and closes the inlet valve. Next, to close the valve along the line F2; when the pressure oil having been supplied through the by-pass line reaches a point P1, the increase in the differential pressure is detected by cylinders 10a and 10b, and the switching valve 10 is switched to change over a port 10c to a boosted pressure-oil line in order to supply the high-pressure oil boosted by a pump 15 for the distributing valve 9. Thus, the volume of the servomotor is greatly reduced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10078379A JPS5627076A (en) | 1979-08-09 | 1979-08-09 | Controller for hydraulic machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10078379A JPS5627076A (en) | 1979-08-09 | 1979-08-09 | Controller for hydraulic machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5627076A true JPS5627076A (en) | 1981-03-16 |
Family
ID=14283053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10078379A Pending JPS5627076A (en) | 1979-08-09 | 1979-08-09 | Controller for hydraulic machinery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5627076A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201737A (en) * | 2015-10-19 | 2015-12-30 | 天津电气科学研究院有限公司 | Hydraulic auxiliary adjusting system of small-size hydropower station |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5045142A (en) * | 1973-08-27 | 1975-04-23 |
-
1979
- 1979-08-09 JP JP10078379A patent/JPS5627076A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5045142A (en) * | 1973-08-27 | 1975-04-23 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201737A (en) * | 2015-10-19 | 2015-12-30 | 天津电气科学研究院有限公司 | Hydraulic auxiliary adjusting system of small-size hydropower station |
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