CN201937532U - Hydraulic generator control system - Google Patents
Hydraulic generator control system Download PDFInfo
- Publication number
- CN201937532U CN201937532U CN2011200062993U CN201120006299U CN201937532U CN 201937532 U CN201937532 U CN 201937532U CN 2011200062993 U CN2011200062993 U CN 2011200062993U CN 201120006299 U CN201120006299 U CN 201120006299U CN 201937532 U CN201937532 U CN 201937532U
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- generator
- hydraulic
- control system
- frequency
- control chip
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Abstract
The utility model relates to a hydraulic generator control system, which comprises an engine, a hydraulic oil pump, a hydraulic motor, a generator, a control chip, a signal collection module and an electromagnetic valve, wherein the signal collection module is connected with the control chip, the electromagnetic valve is connected with a programmable logic controller (PLC) control chip, the action end of the electromagnetic valve is connected with the hydraulic oil pump, and the signal collection module collects frequency signals of voltage signals of the generator. Because the voltage and frequency signals of the generator are used as feedback signals, the work state of the hydraulic oil pump is controlled through the output of the electromagnetic valve, the output precision and the stability of the generator can be controlled, in addition, the hydraulic generator control system is provided with a frequency conversion switch, and the output frequency of the generator can be switched between two frequencies.
Description
Technical field
The utility model relates to a kind of control system, specifically is meant a kind of control system of utilizing feedback signal control output.
Background technology
Traditional hydraulic generator control method as shown in Figure 1, be the swash plate that drives hydraulic oil pump by the feedback of hydraulic oil, when initial debugging, regulate mechanical mechanism, set up the flow of hydraulic oil pump, with this rotating speed of controlling generator, reach the purpose of stable electric generation unit frequency.If during situations such as the rotation speed change of engine or generator loading change, because the feedback speed of hydraulic oil is slow, so have influence on the output of generator.According to surveying and determination, engine is in the time of 1200 rev/mins, and generator frequency is 50HZ; Engine is in the time of 1000 rev/mins, and generator frequency is 48.5HZ; Engine is in the time of 1600 rev/mins, and generator frequency is 55HZ; Seriously influence the normal operation of instrument.The wearing and tearing of the temperature of hydraulic oil, the variation of load, Hydraulic Elements, the various situations such as leakage of hydraulic oil also can have very big influence to the output of generator.
A lot of customer requirements supply frequency 60HZ and 50HZ can change, and traditional hydraulic generator is regulated needs the professional person to adjust, very trouble.
Traditional hydraulic generator is when engine running, and hydraulic system is in operating condition all the time, causes the unnecessary wearing and tearing of mechanical part and the waste of power.Influence the useful life of generator.
The utility model content
The utility model aim to provide a kind of generator output accuracy and stability height, be easy to the hydraulic generator control system of the conversion of generator output frequency, in order to realize above-mentioned technique effect, the technical scheme that adopts is: the hydraulic generator control system, comprise engine, hydraulic oil pump, hydraulic motor, generator, it is characterized in that, also comprise a PLC control chip, signal acquisition module that links to each other with the PLC control chip and the electromagnetically operated valve that is connected with the PLC control chip, the motion end of electromagnetically operated valve is connected with hydraulic oil pump.
Described signal acquisition module comprises voltage signal acquisition module and frequency signal acquisition module.
Further improvement as technical scheme also comprises the frequency-changeover switch that links to each other with the PLC control chip.Give high potential signal of controller or low-potential signal by switch, controller is changed corresponding program, provides different electric currents to electromagnetically operated valve, and generator can be worked under 50HZ or two kinds of output modes of 60HZ, no longer does the adjustment of other complexity.Frequency inverted is very convenient.
Further, also comprise the switch that is connected with the PLC control chip.When engine running but when not needing generator powered, starting switch is placed the OFF position, the controller non-output signal.Generator is in halted state.Avoided the zero load wearing and tearing of hydraulic system and generator, thus the useful life of improving generator.
The beneficial effects of the utility model: the utility model adopts and utilizes generator voltage signal and frequency signal to feed back the operating state of controlling hydraulic oil pump; improve the output accuracy and the stability of generator; the utility model also is provided with the switch of frequency-changeover switch and feedback signal; be easy to the conversion of generator output frequency; improve the useful life of generator, increased the error protection of generator.
Description of drawings
Fig. 1 is the control system structural representation of hydraulic generator prior art;
Fig. 2 is the control system structural representation of the utility model hydraulic generator;
Fig. 3 is the control flow block diagram of the utility model hydraulic generator control system;
Fig. 4 is the winding diagram of the utility model hydraulic generator control system.
Specific embodiment
Fig. 2 is the control system structural representation of the utility model hydraulic generator,
The utility model comprises engine, hydraulic oil pump, hydraulic motor, generator, engine drives hydraulic oil pump, also comprise a PLC control chip, signal acquisition module that links to each other with the PLC control chip and the electromagnetically operated valve that is connected with the PLC control chip, the motion end of electromagnetically operated valve is connected with hydraulic oil pump.Described signal acquisition module comprises voltage signal acquisition module and current signal acquisition module.In addition, also comprise the frequency-changeover switch that links to each other with the PLC control chip.
With the output of generator through transformation, shaping, amplification after as feedback signal.The output accuracy and the stability of generator have been improved greatly.According to on-site measurement, when engine speed changed between 900-1800 rev/min, the output frequency excursion of generator was ± 2HZ can return to set point fast in 500ms.Reached the electricity consumption requirement.The process that realizes is as follows:
Behind the engine running, the controller power supply pulls starting switch to the ON position, and controller provides a current drives hydraulic oil pump that slowly increases to electromagnetically operated valve, and hydraulic system brings into operation with the startup slope of 30S, the impact when having avoided unexpected the start.Hydraulic oil pump drives hydraulic motor and drives generator, the rotating speed of generator is raise gradually, this moment alternator output signal, input controller after this signal process transformation, shaping, the amplification, the automatic acquired signal of director demon, control program transfers the electric current of PID automatic control program control electromagnetically operated valve to when reaching the setpoint frequency value.Reach the stable purpose of generator frequency.When pulling starting switch to the OFF position, controller provides an electric current that slowly reduces to electromagnetically operated valve, hydraulic system with 30S to stop the slope out of service, the impact when avoiding shutting down suddenly.
(2), be easy to the conversion of generator output frequency.
Controller inside is provided with frequency-changeover switch.Give high potential signal of controller or low-potential signal by switch, controller is changed corresponding program, provides different electric currents to electromagnetically operated valve, and generator can be worked under 50HZ or two kinds of output modes of 60HZ, no longer does the adjustment of other complexity.Frequency inverted is very convenient.
(3), improve the useful life of generator.
When engine running but when not needing generator powered, starting switch is placed the OFF position, the controller non-output signal.Generator is in halted state.Avoided the zero load wearing and tearing of hydraulic system and generator, thus the useful life of improving generator.
When generator starts or stops, start and stop the slope because added, the operation of generator and hydraulic system and stop to realize gradually, the impact when having avoided unexpected transition status, thereby the useful life of improving generator.
(4), increased the error protection of generator.
After starting 30S at generator, if generator hinders not output for some reason, controller stops the output of electromagnetically operated valve automatically, the halt system operation.
When controller detects generator output voltage and surpasses the high pressure set point or be lower than the low pressure set point, stop the output of electromagnetically operated valve, halt system operation automatically in the 5S internal controller.Avoid the generation of accident of power supply.
It should be noted that at last: the above only is embodiments of the invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, technical staff for this neighborhood, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. hydraulic generator control system, comprise engine, hydraulic oil pump, hydraulic motor, generator, it is characterized in that, also comprise a PLC control chip, signal acquisition module that links to each other with the PLC control chip and the electromagnetically operated valve that is connected with the PLC control chip, the motion end of electromagnetically operated valve is connected with hydraulic oil pump.
2. hydraulic generator control system according to claim 1 is characterized in that, described signal acquisition module comprises voltage signal acquisition module and frequency signal acquisition module.
3. hydraulic generator control system according to claim 1 and 2 is characterized in that, also comprises the frequency-changeover switch that links to each other with the PLC control chip.
4. hydraulic generator control system according to claim 3 is characterized in that, also comprises the switch that is connected with the PLC control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200062993U CN201937532U (en) | 2011-01-11 | 2011-01-11 | Hydraulic generator control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200062993U CN201937532U (en) | 2011-01-11 | 2011-01-11 | Hydraulic generator control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201937532U true CN201937532U (en) | 2011-08-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200062993U Expired - Fee Related CN201937532U (en) | 2011-01-11 | 2011-01-11 | Hydraulic generator control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201937532U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271176A (en) * | 2020-01-16 | 2020-06-12 | 天津捷强动力装备股份有限公司 | Hydraulic power generation control method with stable power generation performance index |
| CN112031982A (en) * | 2020-08-20 | 2020-12-04 | 广东电网有限责任公司 | Hydraulic generator with stable output voltage and frequency |
-
2011
- 2011-01-11 CN CN2011200062993U patent/CN201937532U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271176A (en) * | 2020-01-16 | 2020-06-12 | 天津捷强动力装备股份有限公司 | Hydraulic power generation control method with stable power generation performance index |
| CN112031982A (en) * | 2020-08-20 | 2020-12-04 | 广东电网有限责任公司 | Hydraulic generator with stable output voltage and frequency |
| CN112031982B (en) * | 2020-08-20 | 2022-03-29 | 广东电网有限责任公司 | Hydraulic generator with stable output voltage and frequency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 065001 Yaohua Road, Langfang economic and Technological Development Zone, Langfang, Hebei Patentee after: Langfang Xin Pu Pu special equipment Co., Ltd. Address before: 065001 Garden Road, Langfang Development Zone, Langfang, Hebei Province, No. 32 Patentee before: Langfang Exploitation District Sincep Oilog Equipment Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20200111 |