CN202091297U - Hydraulic constant pressure control system of calender - Google Patents
Hydraulic constant pressure control system of calender Download PDFInfo
- Publication number
- CN202091297U CN202091297U CN2011201607174U CN201120160717U CN202091297U CN 202091297 U CN202091297 U CN 202091297U CN 2011201607174 U CN2011201607174 U CN 2011201607174U CN 201120160717 U CN201120160717 U CN 201120160717U CN 202091297 U CN202091297 U CN 202091297U
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- pressure
- proportional valve
- hydraulic
- hydraulic proportional
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Abstract
The utility model relates to a hydraulic constant pressure control system of a calendar. The system is characterized by comprising a constant pressure variable pump, an electro-hydraulic proportional valve, a pressure sensor, a PID (proportion integration differentiation) controller and an electromagnetic valve, wherein the constant pressure variable pump is connected with the electro-hydraulic proportional valve, and the pressure sensor is connected with the electromagnetic valve sequentially; and the PID controller is connected with the electro-hydraulic proportional valve and the pressure sensor, the pressure sensor is used for sending a pressure signal to the PID controller, and the PID controller is used for sending a control signal to the electro-hydraulic proportional valve and controlling the turning-on and off degree of the electro-hydraulic proportional valve. The hydraulic constant pressure control system has the advantages that the pressure control precision of a calendar system can be improved and the pressure fluctuation of the system can be reduced.
Description
Technical field
The utility model relates to a kind of hydraulic control system, relates in particular to a kind of calendering machine hydraulic constant pressure control system.
Background technique
The mode that existing calendering machine hydraulic control system is adopted is the control mode that pressure gauge with electric contact adds the accumulator pressurize.Adopt the hydraulic system of this controlling method, pressure surge scope big (it is that upper and lower scope by the adjustment pressure gauge with electric contact is at 0.5-1MPa that pressure is set), cause pressure transient, thereby influence the press polish effect, the press polish luminance deviation of high pressure and low-pressure when pressure surge, the product defect rate of production increases.
Summary of the invention
At above-mentioned shortcoming, the utility model purpose is to provide a kind of calendering machine hydraulic constant pressure control system that can improve calendering machine system pressure control accuracy and reduce pressure surge.
Technology contents of the present utility model is that a kind of calendering machine hydraulic constant pressure control system is characterized in that it comprises constant pressure variable displacement pump, electro-hydraulic proportional valve, pressure transducer, PID controller and solenoid valve; Constant pressure variable displacement pump is connected identical with electro-hydraulic proportional valve, pressure transducer and solenoid valve successively; The PID controller links to each other with electro-hydraulic proportional valve, pressure transducer, and pressure transducer sends pressure signal to the PID controller, and the PID controller sends control signal and controls the big or small degree that electro-hydraulic proportional valve opens and closes to electro-hydraulic proportional valve.
The advantage that the utility model is compared with prior art had is: can improve calendering machine system pressure control accuracy, the system pressure control accuracy is reached ± 0.05MPa, reduce pressure surge thus and improved the press polish effect.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Specific embodiment
As shown in Figure 1, a kind of calendering machine hydraulic constant pressure control system is characterized in that it comprises constant pressure variable displacement pump 1, electro-hydraulic proportional valve 2, pressure transducer 3, PID controller 4 and solenoid valve 5; Constant pressure variable displacement pump 1 is connected identical with electro-hydraulic proportional valve 2, pressure transducer 3 and solenoid valve 5 successively; PID controller 4 links to each other with electro-hydraulic proportional valve 2, pressure transducer 3, and pressure transducer 3 sends pressure signal to PID controller 4, and PID controller 4 sends control signal and controls the big or small degree that electro-hydraulic proportional valve 2 opens and closes to electro-hydraulic proportional valve 2; The oil cylinder 6 of solenoid valve 5 and calendering machine links to each other.
Claims (1)
1. a calendering machine hydraulic constant pressure control system is characterized in that it comprises constant pressure variable displacement pump (1), electro-hydraulic proportional valve (2), pressure transducer (3), PID controller (4) and solenoid valve (5); Constant pressure variable displacement pump (1) is connected identical with electro-hydraulic proportional valve (2), pressure transducer (3) and solenoid valve (5) successively; PID controller (4) links to each other with electro-hydraulic proportional valve (2), pressure transducer (3), pressure transducer (3) sends pressure signal to PID controller (4), and PID controller (4) sends control signal and controls the big or small degree that electro-hydraulic proportional valve (2) opens and closes to electro-hydraulic proportional valve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201607174U CN202091297U (en) | 2011-05-19 | 2011-05-19 | Hydraulic constant pressure control system of calender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201607174U CN202091297U (en) | 2011-05-19 | 2011-05-19 | Hydraulic constant pressure control system of calender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091297U true CN202091297U (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201607174U Expired - Fee Related CN202091297U (en) | 2011-05-19 | 2011-05-19 | Hydraulic constant pressure control system of calender |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091297U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291689A (en) * | 2013-06-13 | 2013-09-11 | 杭州励贝电液科技有限公司 | Method for controlling loading pressure of tested valve based on hydraulic test bench |
| CN104481977A (en) * | 2014-12-12 | 2015-04-01 | 广西科技大学 | Multi-channel electro-hydraulic servo control system for vehicle part fatigue test |
| CN107475960A (en) * | 2017-08-08 | 2017-12-15 | 东华大学 | A kind of evenness calender control pressurer system |
-
2011
- 2011-05-19 CN CN2011201607174U patent/CN202091297U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291689A (en) * | 2013-06-13 | 2013-09-11 | 杭州励贝电液科技有限公司 | Method for controlling loading pressure of tested valve based on hydraulic test bench |
| CN103291689B (en) * | 2013-06-13 | 2015-09-16 | 杭州励贝电液科技有限公司 | Based on the controlling method of the induced pressure of the tested valve of hydraulic test bench |
| CN104481977A (en) * | 2014-12-12 | 2015-04-01 | 广西科技大学 | Multi-channel electro-hydraulic servo control system for vehicle part fatigue test |
| CN107475960A (en) * | 2017-08-08 | 2017-12-15 | 东华大学 | A kind of evenness calender control pressurer system |
| CN107475960B (en) * | 2017-08-08 | 2020-03-24 | 东华大学 | Uniform padder pressure control system |
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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: 20111228 Termination date: 20140519 |