CN102606462A - Monitoring protection method for hydraulic station of blast shaft - Google Patents
Monitoring protection method for hydraulic station of blast shaftDownload PDFInfo
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- CN102606462A CN102606462ACN2012100945079ACN201210094507ACN102606462ACN 102606462 ACN102606462 ACN 102606462ACN 2012100945079 ACN2012100945079 ACN 2012100945079ACN 201210094507 ACN201210094507 ACN 201210094507ACN 102606462 ACN102606462 ACN 102606462A
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- 239000010720hydraulic oilSubstances0.000description6
- 230000009471actionEffects0.000description4
- 239000002828fuel tankSubstances0.000description3
- 238000004519manufacturing processMethods0.000description3
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Abstract
Description
Technical field
The invention belongs to hydraulic station control and protection field, particularly hydraulic station monitoring and protection method.
Background technique
Hydraulic transmission extensive use in many subtense angles of blast furnace process.Hydraulic station is to be used to control and drive power source and the control maincenter that blast furnace is produced necessary hydraulic equipment, and the quality of its running state directly has influence on the production of blast furnace.In a single day hydraulic station goes wrong, and will cause the hydraulic equipment remarkable action, and then causes the paralysis of whole production system, causes enormous economic loss to enterprise.Therefore, the hydraulic station in the blast furnace production link is carried out necessary monitoring and protects extremely important.
At present, in monitoring, all be that key parameters such as liquid level, oil temperature, oil pressure, pump operation fault are carried out upper-position unit supervision or instrument demonstration on the spot to the hydraulic station Operational Limits.Because the variation to the hydraulic station Operational Limits lacks the real-time and effective analysis, the hydraulic station control system can't in time be foreseen the degradation trend and the fault message of Hydraulic Power Transmission System, thereby can't satisfy the requirement of the desired preventive maintenance of blast furnace continuous flow procedure.Therefore, a kind ofly can carry out effective monitoring, hydraulic station monitor protective system and controlling method thereof that the protection of the ANOMALOUS VARIATIONS of monitoring parameter and hydraulic station combines are arisen at the historic moment the Operational Limits of hydraulic station.
Summary of the invention
Technical problem to be solved by this invention is: a kind of blast furnace hydraulic station monitoring and protection method is provided, realizes that the hydraulic station system operational parameters detects automatically, data are handled automatically, the equipment automatic protection functions, keep the stability and security of hydraulic station.
The technological scheme that the present invention adopted is: a kind of blast furnace hydraulic station monitoring and protection method, and it is characterized in that: it may further comprise the steps:
1) detects real time temperature value, real-time oil level value, real-time oil pressure value, plugged filter signal, oil hydraulic pump power failure signal, motor protecter trouble signal in real time;
2) preset temperature index, oil level index and oil pressure index;
Temperature index has: the high value of temperature, the high value of temperature, temperature low value, temperature low low value, heater shutdown temperature value and cooler shutdown temperature value;
The oil level index has: high value of oil level and oil level low value;
The oil pressure index has: high value of oil pressure and oil pressure low value;
3) be higher than the high value of temperature when the real time temperature value, or the real time temperature value is lower than oily temperature low value, or oil pressure value is higher than oil pressure high value in real time, or when the oil purifier jam signal occurring, system will send warning;
4) be higher than the high high value of temperature or be lower than temperature when hanging down low value, the stop solution press pump when the real time temperature value; When real-time oil level value is lower than the oil level low value, the stop solution press pump; When real-time oil pressure value N continuous is lower than the oil pressure low value second, the stop solution press pump; When oil hydraulic pump power failure signal or motor protecter trouble signal occurring, the reserve liquid press pump is hauled oneself willingly into; When the real time temperature value is lower than the temperature low value, start heater; When the real time temperature value is higher than heater shutdown temperature value, close heater; , the real time temperature value drives cooler when being higher than temperature high value; When the real time temperature value is lower than cooler shutdown temperature value, close cooler;
Described N is a predefined value.
Press such scheme, described plugged filter signal adopts the mode of pressure differential detection to obtain, and filter element pressure reduction is greater than 0.30Mpa output filter jam signal then.
Press such scheme, described real-time fuel injection pressure signal adopts liquid-level switch as the chain signal of control, adopts the monitoring data of magnetostrictive liquid level sensor as liquid level.
Press such scheme, described oily Wen Gaogao value is decided to be 55 ℃, and the high value of oil temperature is decided to be 50 ℃, and oily temperature low value is decided to be 20 ℃, and the low low value of oil temperature is decided to be 5 ℃, and heater shutdown temperature value is decided to be 35 ℃, and cooler shutdown temperature value is decided to be 35 ℃.
Press such scheme, the high value of described oil pressure is decided to be 18MPa, and low fuel pressure is decided to be 14.8MPa.
Press such scheme, when the stop solution press pump, reason shut down in record.
Beneficial effect of the present invention is: the own characteristic of the hydraulic station system that combines closely; Choosing key parameter monitors in real time; Monitoring parameter is handled automatically; Realized that the equipment of hydraulic station protects automatically, had very strong early warning and troubleshooting capability, guaranteed the stable and safety of hydraulic system.
Description of drawings
Fig. 1 is a hardware block diagram of the present invention.
Fig. 2 is the control flow chart of one embodiment of the invention.
Embodiment
Fig. 1 is a hardware block diagram of the present invention, comprises oil hydraulic pump, heater, cooler and the signal pickup assembly of programmable logic controller (PLC) PLC, supervisory control comuter, carry potential overflow valve; The oil hydraulic pump of carry potential overflow valve, heater, cooler and signal pickup assembly are connected with PLC respectively, and PLC is connected with supervisory control comuter; Wherein the signal of signal pickup assembly collection passes to supervisory control comuter by PLC, and supervisory control comuter sends control command through PLC control heater, cooler and oil hydraulic pump according to the signal of signal pickup assembly.
Signal pickup assembly comprises that oil level detecting device, oily temperature detection device, oil pressure detection device and oil purifier stop up detection device.In the present embodiment, oily temperature detection device is selected thermal resistor for use; The oil pressure detection device is selected the electron pressure relay for use; Oil level detecting device comprises liquid-level switch and magnetostrictive liquid level sensor, and wherein liquid-level switch produces the chain signal of control, and magnetostrictive liquid level sensor is gathered the monitoring data of liquid level.
A kind of blast furnace hydraulic station monitoring and protection method is as shown in Figure 2, and it may further comprise the steps:
1) detects real time temperature value, real-time oil level value, real-time oil pressure value, plugged filter signal, oil hydraulic pump power failure signal, motor protecter trouble signal in real time;
2) preset temperature index, oil level index and oil pressure index;
Temperature index has: the high value of temperature, the high value of temperature, temperature low value, temperature low low value, heater shutdown temperature value and cooler shutdown temperature value;
The oil level index has: high value of oil level and oil level low value;
The oil pressure index has: high value of oil pressure and oil pressure low value;
3) be higher than the high value of temperature when the real time temperature value, or the real time temperature value is lower than oily temperature low value, or oil pressure value is higher than oil pressure high value in real time, or when the oil purifier jam signal occurring, system will send warning;
4) be higher than the high high value of temperature or be lower than temperature when hanging down low value, the stop solution press pump when the real time temperature value; When real-time oil level value is lower than the oil level low value, the stop solution press pump; When real-time oil pressure value N continuous is lower than the oil pressure low value second, the stop solution press pump; When oil hydraulic pump power failure signal or motor protecter trouble signal occurring, the reserve liquid press pump is hauled oneself willingly into; When the real time temperature value is lower than the temperature low value, start heater; When the real time temperature value is higher than heater shutdown temperature value, close heater; , the real time temperature value drives cooler when being higher than temperature high value; When the real time temperature value is lower than cooler shutdown temperature value, close cooler; Described N is a predefined value, can be rule of thumb or actual conditions choose, get N=20 second in the present embodiment;
5) when the stop solution press pump, reason shut down in record.
Below in conjunction with Fig. 1 and Fig. 2, introduce the design and the controlling method of hydraulic station monitor protective system in detail.
(1) choosing and the detection system cell design of key parameter:
High oily temperature in the hydraulic station can have a strong impact on the life-span of hydraulic oil; Low oily temperature can cause oil pump to inhale sky, resistance is decreased and strengthened; The variation of oil temperature not only reacted whole system operation efficient and ride quality variation; Also there is confidential relation in the life-span with hydraulic oil, so temperature transducer adopts thermal resistor, not only guarantees measuring accuracy but also guarantee dynamic response property.
The hydraulic station oil level should remain on a normal oil level, and long-term low oil level operation will produce baneful influence to fuel tank, oil pump, hydraulic buttery valve, hydraulic oil.So this signal adopts liquid-level switch as the chain signal of control, adopts the monitoring data of magnetostrictive liquid level sensor as liquid level.
The hydraulic station oil pressure should remain on a normal oil pressure, if oil pressure is low excessively, explains that possibly there is oil leakage phenomenon in hydraulic system; Oil pressure is too high, all certain damage can be arranged to hydraulic pipe line and hydraulic jack.So hydraulic pressure signal adopts the electron pressure relay, sees two-way digital quantity signal and one road analog signals off.
It is clean relatively that the oil circuit of hydraulic station should keep, and stops up detection device so need to introduce oil purifier, and whether the filter core that the mode of employing pressure differential detection detects oil strain stops up.
The oil pump of hydraulic station, heater, cooler are the visual plants of hydraulic station; Wherein, Oil hydraulic pump is the source of power, costs an arm and a leg, and should be the most important thing to its protection; Therefore, the diagnostic signal of hydraulic pump motor power supply signal, run signal, current signal, motor protecter all should be chosen to be important monitoring parameter.
(2) analysis of monitor control index is with definite:
In this instance, monitor control index need be confirmed following 5 indexs: with the warning and the device motion linkage value of associated temperature; Warning relevant with oil level and action linkage value, warning relevant with oil pressure and action linkage value stop up device-dependent malfunction alarm values such as relevant alarming value and hydraulic pump motor with oil purifier.
The optimum working temperature of the hydraulic oil of hydraulic station is 20-50 ℃.So: the oily Wen Gaogao value in the present embodiment is decided to be 55 ℃, and the high value of oil temperature is decided to be 50 ℃, and oily temperature low value is decided to be 20 ℃, and the low low value of oil temperature is decided to be 15 ℃, and heater shutdown temperature value is decided to be 35 ℃, and the cooler shutdown temperature is decided to be 35 ℃.
The oil pressure of the proper functioning of furnace roof hydraulic station individual equipment is 15MPa.The high value of oil pressure is decided to be 18MPa, and the oil pressure low value is decided to be 14.8MPa, continues 20 seconds, if that is: in 20 seconds, the real-time oil pressure value of system is still less than the oil pressure low value, can assert that then system causes the hydraulic system low fuel pressure because of oil circuit leakage or oil pump mechanical failure.
The fuel tank height of furnace roof hydraulic station is 80cm, and in conjunction with fuel tank volume and hydraulic pipe line actual conditions, the high oil level switch of hydraulic pressure is installed in the height of 60cm, and the switch of repairing position is installed in the height of 35cm, and the switch of low oil level is installed in the height of 30cm.The low oil level signal is an important chain signal, and the mounting point of low oil level must be higher than the height of oil hydraulic pump filler opening.
In order to guarantee the normal filtration of hydraulic oil, oil purifier should be operated under the working environment that filter core pressure reduction is not more than 0.30MPa, so: the obstruction of recursive filter is decided to be pressure reduction greater than 0.30Mpa.
The power of motor of oil hydraulic pump is 22KW, and the electric current of its proper functioning is 41A, through motor protecter this motor is carried out necessary integrated protection.
It is emphasized that only to provide an instantiation in the present embodiment, parameter wherein like temperature, pressure, level height etc., all can suitably be finely tuned according to the characteristic of environment, weather and hydraulic system hydraulic oil itself.
(3) the safety protection strategy of hydraulic station:
The first, temperature, pressure, oil level, oil purifier stop up the strategy of reporting to the police.When occurring that the oil temperature is high, the oil temperature is low, oil pressure is high or during the oil purifier jam signal, system will report to the police, and remind the system of staff's hydraulic station to be in abnormal condition, need carry out necessary dimension inspection; Oily Wen Gaogao, oil temperature are low when occurring, low fuel pressure, oil level is low or the motor protecter trouble signal, the also chain shutdown of reporting to the police.
The second, use the self-regulating protection of temperature of heater, cooler tactful.When oily temperature low signal occurring, then start heater; After the oil temperature is shut down chain temperature greater than heater, then stop heater; When the warm high signal of oil occurring, then start cooler; After the oil temperature is shut down chain temperature less than cooler, then stop cooler.Through the automatic control of heater and cooler, can regulate the oil temperature in the oily temperature scope of proper functioning.
The 3rd; The oil hydraulic pump safety control strategy; As the core component of hydraulic station, signals such as oil temperature, the oil pressure of oil hydraulic pump startup and operation and hydraulic station, oil level are chain, that is: when warm low, the low fuel pressure of oily Wen Gaogao, oil appears, oil level is low or during the motor protecter trouble signal; Oil hydraulic pump must be out of service and can't be started, and reason shut down in record.When electrical failure or motor protecter fault appear in working pump, subsequent usely put into operation immediately, to guarantee the normal free of discontinuities work of hydraulic station system.
To sum up; Hydraulic station monitor protective system and method that the present invention proposes; Under the prerequisite of deeply analyzing the important Operational Limits characteristic of hydraulic station; Accomplished the confirming of design and monitor control index of important checkout value detection system, the action logic and the real-time parameter of handling automatically of each equipment of hydraulic station combined closely, the reliable operation that has guaranteed hydraulic station with give warning in advance.
Claims (6)
1. blast furnace hydraulic station monitoring and protection method, it is characterized in that: it may further comprise the steps:
1) detects real time temperature value, real-time oil level value, real-time oil pressure value, plugged filter signal, oil hydraulic pump power failure signal, motor protecter trouble signal in real time;
2) preset temperature index, oil level index and oil pressure index;
Temperature index has: the high value of temperature, the high value of temperature, temperature low value, temperature low low value, heater shutdown temperature value and cooler shutdown temperature value;
The oil level index has: high value of oil level and oil level low value;
The oil pressure index has: high value of oil pressure and oil pressure low value;
3) be higher than the high value of temperature when the real time temperature value, or the real time temperature value is lower than oily temperature low value, or oil pressure value is higher than oil pressure high value in real time, or when the oil purifier jam signal occurring, system will send warning;
4) be higher than the high high value of temperature or be lower than temperature when hanging down low value, the stop solution press pump when the real time temperature value; When real-time oil level value is lower than the oil level low value, the stop solution press pump; When real-time oil pressure value N continuous is lower than the oil pressure low value second, the stop solution press pump; When oil hydraulic pump power failure signal or motor protecter trouble signal occurring, the reserve liquid press pump is hauled oneself willingly into; When the real time temperature value is lower than the temperature low value, start heater; When the real time temperature value is higher than heater shutdown temperature value, close heater; , the real time temperature value drives cooler when being higher than temperature high value; When the real time temperature value is lower than cooler shutdown temperature value, close cooler;
Described N is a predefined value.
2. blast furnace hydraulic station monitoring and protection method according to claim 1 is characterized in that: described plugged filter signal adopts the mode of pressure differential detection to obtain, and filter element pressure reduction is greater than 0.30Mpa output filter jam signal then.
3. blast furnace hydraulic station monitoring and protection method according to claim 1 is characterized in that: described real-time fuel injection pressure signal adopts liquid-level switch as the chain signal of control, adopts the monitoring data of magnetostrictive liquid level sensor as liquid level.
4. blast furnace hydraulic station monitoring and protection method according to claim 1; It is characterized in that: described oily Wen Gaogao value is decided to be 55 ℃; The high value of oil temperature is decided to be 50 ℃, and oily temperature low value is decided to be 20 ℃, and the low low value of oil temperature is decided to be 5 ℃; Heater shutdown temperature value is decided to be 35 ℃, and cooler shutdown temperature value is decided to be 35 ℃.
5. blast furnace hydraulic station monitoring and protection method according to claim 1 is characterized in that: the high value of described oil pressure is decided to be 18MPa, and low fuel pressure is decided to be 14.8MPa.
6. according to any described blast furnace hydraulic station monitoring and protection method in the claim 1 to 5, it is characterized in that: when the stop solution press pump, reason shut down in record.
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| CN2012100945079ACN102606462A (en) | 2012-04-01 | 2012-04-01 | Monitoring protection method for hydraulic station of blast shaft |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966642A (en)* | 2012-11-20 | 2013-03-13 | 权衡 | Automatic temperature control system for mine operating car |
| CN105370610A (en)* | 2015-11-30 | 2016-03-02 | 中冶南方工程技术有限公司 | Gas pressuring machine monitoring and protection system |
| CN107247441A (en)* | 2017-07-12 | 2017-10-13 | 泰州市宏泰电力设备有限公司 | Vacuum oil-filter remote monitoring system and method |
| CN107376635A (en)* | 2016-08-18 | 2017-11-24 | 天津大唐国际盘山发电有限责任公司 | A kind of anti-cold operation automatic protecting method of catalyst for denitrating flue gas and control system |
| CN109630503A (en)* | 2019-01-09 | 2019-04-16 | 无锡诚勇自动化技术有限公司 | A kind of hydraulic pump health diagnosis system and its diagnostic method |
| CN110889205A (en)* | 2019-11-06 | 2020-03-17 | 精英数智科技股份有限公司 | Method, device, equipment and storage medium for monitoring hydraulic station |
| CN112503061A (en)* | 2020-11-27 | 2021-03-16 | 浙江盈亿机械股份有限公司 | Oil temperature constant temperature intelligent control system |
| CN114115044A (en)* | 2021-11-26 | 2022-03-01 | 武汉锐科光纤激光技术股份有限公司 | Monitoring method, system, device, storage medium and electronic device for welding equipment |
| CN116255377A (en)* | 2023-05-11 | 2023-06-13 | 南京蒙福液压机械有限公司 | A fault analysis system for servo intelligent machine tool hydraulic station |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966642A (en)* | 2012-11-20 | 2013-03-13 | 权衡 | Automatic temperature control system for mine operating car |
| CN105370610A (en)* | 2015-11-30 | 2016-03-02 | 中冶南方工程技术有限公司 | Gas pressuring machine monitoring and protection system |
| CN107376635A (en)* | 2016-08-18 | 2017-11-24 | 天津大唐国际盘山发电有限责任公司 | A kind of anti-cold operation automatic protecting method of catalyst for denitrating flue gas and control system |
| CN107376635B (en)* | 2016-08-18 | 2020-02-11 | 天津大唐国际盘山发电有限责任公司 | Automatic protection method and control system for preventing low-temperature operation of flue gas denitration catalyst |
| CN107247441A (en)* | 2017-07-12 | 2017-10-13 | 泰州市宏泰电力设备有限公司 | Vacuum oil-filter remote monitoring system and method |
| CN109630503A (en)* | 2019-01-09 | 2019-04-16 | 无锡诚勇自动化技术有限公司 | A kind of hydraulic pump health diagnosis system and its diagnostic method |
| CN109630503B (en)* | 2019-01-09 | 2024-02-06 | 无锡诚勇自动化技术有限公司 | Hydraulic pump health diagnosis system and diagnosis method thereof |
| CN110889205A (en)* | 2019-11-06 | 2020-03-17 | 精英数智科技股份有限公司 | Method, device, equipment and storage medium for monitoring hydraulic station |
| CN112503061A (en)* | 2020-11-27 | 2021-03-16 | 浙江盈亿机械股份有限公司 | Oil temperature constant temperature intelligent control system |
| CN114115044A (en)* | 2021-11-26 | 2022-03-01 | 武汉锐科光纤激光技术股份有限公司 | Monitoring method, system, device, storage medium and electronic device for welding equipment |
| CN114115044B (en)* | 2021-11-26 | 2023-09-01 | 武汉锐科光纤激光技术股份有限公司 | Monitoring method, system and device of welding equipment, storage medium and electronic device |
| CN116255377A (en)* | 2023-05-11 | 2023-06-13 | 南京蒙福液压机械有限公司 | A fault analysis system for servo intelligent machine tool hydraulic station |
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