CN102303420A - Method for monitoring liquid level of hydraulic press by using plug-in analog quantity liquid level sensor - Google Patents
Method for monitoring liquid level of hydraulic press by using plug-in analog quantity liquid level sensor Download PDFInfo
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- CN102303420A CN102303420A CN201110279997A CN201110279997A CN102303420A CN 102303420 A CN102303420 A CN 102303420A CN 201110279997 A CN201110279997 A CN 201110279997A CN 201110279997 A CN201110279997 A CN 201110279997A CN 102303420 A CN102303420 A CN 102303420A
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Abstract
The invention relates to a method for monitoring the liquid level of a hydraulic press by using a plug-in analog quantity liquid level sensor. In the method, the analog liquid level sensor is arranged in an oil supply tank of the hydraulic press and is connected with an analog quantity input module of a PLC (programmable logical controller). In the operating process of the hydraulic press, the method comprises the following steps: judging whether the analog quantity liquid level sensor detects the liquid level of a main oil tank; if so, executing the next step; otherwise, continuously carrying out the judgment; comparing the detected liquid level with the set low liquid level value and high liquid level value so as to judge whether the liquid level is in the set liquid level range; if so, returning to the step 1 and continuing to judge whether the analog liquid level sensor detects the liquid level of the main oil tank; and otherwise, stopping the hydraulic press to check. The method provided by the invention is simple and easy to implement; through the method, the oil level of hydraulic oil can be monitored in real time, the control effect is good, and the operation is stable and reliable; and moreover, not only can the problem of full leakage of the hydraulic oil be solved, but also convenience is brought to the user of the hydraulic press and energy can be saved. The method has remarkably high values in popularization and application.
Description
Technical field
The present invention relates to hydraulic press, particularly relate to a kind of method of utilizing plug-in type analog quantity level sensor monitors hydraulic press liquid level that can monitor hydraulic press hydraulic oil oil level in real time.
Background technology
Along with the develop rapidly of forging industry, require the technical performance of forcing press also more and more higher, become inevitablely for the security control of hydraulic press, the hydraulic press leakage of oil all is the hydraulic press unavoidable problem all the time.
Usually we adopt common liquid level gauge that oil tank liquid level is detected; Common liquid level gauge has only two position probing of a low liquid level of a high liquid level; The operator is a negligence slightly, and the hydraulic oil of whole fuel tank just all leaks and do not had, and causes very big man power and material's waste.
Summary of the invention
The present invention provides a kind of can in real time liquid level be monitored for solving the technical problem that exists in the known technology, effectively prevents the method for utilizing plug-in type analog quantity level sensor monitors hydraulic press liquid level of light leak hydraulic oil problem.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: a kind of method of utilizing plug-in type analog quantity level sensor monitors hydraulic press liquid level; Be the level monitoring method that is used in the supply reservoir of hydraulic press, being provided with the analog quantity liquid level sensor that links to each other with the analog quantity input module of PLC, in the hydraulic press running, comprise the steps:
1) judges whether the analog quantity liquid level sensor detects the liquid level of main fuel tank, be to get into next step, otherwise continue to judge;
2) judging whether in the liquid level of setting, is to return the 1st step to continue to judge whether the analog quantity liquid level sensor detects the liquid level of main fuel tank, otherwise shutdown inspection.
Described the judging whether of step 2 comprises following process in the liquid level of setting:
1) compares with the low level value of setting, if, carry out next process, if less than the low level value of setting then shutdown inspection greater than the low level value of setting;
2) compare with the high level value of setting,, return the 1st step and continue judge whether the analog quantity liquid level sensor detects the liquid level of main fuel tank, if greater than the high level value of setting then shutdown inspection if less than the high level value of setting.
Advantage and good effect that the present invention has are: the method for utilizing plug-in type analog quantity level sensor monitors hydraulic press liquid level of the present invention; Simple; Can monitor the hydraulic oil oil level in real time; Control effective; Stable and reliable operation; Not only avoid occurring the problem of hydraulic oil light leak, also made things convenient for the hydraulic press user, more can energy savings.Have highly application value.
Description of drawings
Fig. 1 is the structural representation of hydraulic press involved in the present invention;
Fig. 2 is the structural representation of control section;
Fig. 3 is the flow chart of control method of the present invention.
Wherein:
1-1: hydraulic press 1-2: operation panel (above control terminal-touch-screen able to programme is arranged)
1-3:PLC (Programmable Logic Controller) 1-4: fuel tank
1-5: analog quantity liquid level sensor.
The specific embodiment
For further understanding summary of the invention, characteristics and the effect that the present invention utilizes the method for plug-in type analog quantity level sensor monitors hydraulic press liquid level, exemplify following examples now, and conjunction with figs. describes as follows in detail:
Like Fig. 1, shown in Figure 2; The method of utilizing plug-in type analog quantity level sensor monitors hydraulic press liquid level of the present invention is the level monitoring method that is used in the supply reservoir 1-4 of hydraulic press 1-1, being provided with the analog quantity liquid level sensor 1-5 that links to each other with the analog quantity input module of PLC (Programmable Logic Controller) 1-3.
The method of utilizing plug-in type analog quantity level sensor monitors hydraulic press liquid level of the present invention specifically is in the hydraulic press running, to comprise the steps:
1) judges whether the analog quantity liquid level sensor detects the liquid level of main fuel tank, be to get into next step, otherwise continue to judge;
2) judging whether in the liquid level of setting, is to return the 1st step to continue to judge whether the analog quantity liquid level sensor detects the liquid level of main fuel tank, otherwise shutdown inspection.
Described judging whether comprises following process in the liquid level of setting:
1) compares with the low level value of setting, if, carry out next process, if less than the low level value of setting then shutdown inspection greater than the low level value of setting;
2) compare with the high level value of setting,, return the 1st step and continue judge whether the analog quantity liquid level sensor detects the liquid level of main fuel tank, if greater than the high level value of setting then shutdown inspection if less than the high level value of setting.
Adopt the method for utilizing plug-in type analog quantity level sensor monitors hydraulic press liquid level of the present invention; Can utilize the analog quantity liquid level gauge that the liquid level in the fuel tank is monitored; Can monitor the hydraulic oil oil level in real time; And testing result delivered to the analog quantity input module; PLC is through judging the hydraulic oil oil level value that is input to the analog quantity input module; Control the duty of hydraulic press; Within the scope of hydraulic oil oil level value in setting value; Hydraulic press operate as normal, otherwise hydraulic press shutdown inspection.
Claims (2)
1. method of utilizing plug-in type analog quantity level sensor monitors hydraulic press liquid level; It is characterized in that; Be the level monitoring method that is used in the supply reservoir (1-4) of hydraulic press (1-1), being provided with the analog quantity liquid level sensor (1-5) that links to each other with the analog quantity input module of PLC (1-3), in the hydraulic press running, comprise the steps:
1) judges whether the analog quantity liquid level sensor detects the liquid level of main fuel tank, be to get into next step, otherwise continue to judge;
2) judging whether in the liquid level of setting, is to return the 1st step to continue to judge whether the analog quantity liquid level sensor detects the liquid level of main fuel tank, otherwise shutdown inspection.
2. the method for utilizing plug-in type analog quantity level sensor monitors hydraulic press liquid level according to claim 1 is characterized in that, described the judging whether of step 2 comprises following process in the liquid level of setting:
1) compares with the low level value of setting, if, carry out next process, if less than the low level value of setting then shutdown inspection greater than the low level value of setting;
2) compare with the high level value of setting,, return the 1st step and continue judge whether the analog quantity liquid level sensor detects the liquid level of main fuel tank, if greater than the high level value of setting then shutdown inspection if less than the high level value of setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110279997A CN102303420A (en) | 2011-09-20 | 2011-09-20 | Method for monitoring liquid level of hydraulic press by using plug-in analog quantity liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110279997A CN102303420A (en) | 2011-09-20 | 2011-09-20 | Method for monitoring liquid level of hydraulic press by using plug-in analog quantity liquid level sensor |
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| CN102303420A true CN102303420A (en) | 2012-01-04 |
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| CN201110279997A Pending CN102303420A (en) | 2011-09-20 | 2011-09-20 | Method for monitoring liquid level of hydraulic press by using plug-in analog quantity liquid level sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103309274A (en) * | 2013-05-17 | 2013-09-18 | 天津市天锻压力机有限公司 | Forging hydraulic press control method based on dual monitoring systems |
| CN104047926A (en) * | 2014-06-20 | 2014-09-17 | 济钢集团有限公司 | Pump station oil leakage prevention and control method and system of hydraulic system and lubrication system |
| CN104061207A (en) * | 2014-06-23 | 2014-09-24 | 首钢京唐钢铁联合有限责任公司 | Method and system for judging oil leakage of rolling mill |
| CN103707549B (en) * | 2013-12-17 | 2016-03-23 | 马钢(集团)控股有限公司 | Hydraulic press oil tank level supervising device |
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| JPH0783735A (en) * | 1993-09-13 | 1995-03-31 | Kansai Coke & Chem Co Ltd | Device for detecting oil leakage from hydraulic device |
| KR20000018425A (en) * | 1998-09-02 | 2000-04-06 | 이광진 | Oil level regulation device and method |
| CN200999855Y (en) * | 2007-01-22 | 2008-01-02 | 宝山钢铁股份有限公司 | Double tubes type gear box oil level detection device for cooling column blower fan |
| CN101524887A (en) * | 2009-03-26 | 2009-09-09 | 上海大学 | Energy-saving type cooling water circulating system and running mode of injection workshop |
| CN201714747U (en) * | 2010-06-13 | 2011-01-19 | 宝山钢铁股份有限公司 | Alarm device for hydraulic flow |
-
2011
- 2011-09-20 CN CN201110279997A patent/CN102303420A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0783735A (en) * | 1993-09-13 | 1995-03-31 | Kansai Coke & Chem Co Ltd | Device for detecting oil leakage from hydraulic device |
| KR20000018425A (en) * | 1998-09-02 | 2000-04-06 | 이광진 | Oil level regulation device and method |
| CN200999855Y (en) * | 2007-01-22 | 2008-01-02 | 宝山钢铁股份有限公司 | Double tubes type gear box oil level detection device for cooling column blower fan |
| CN101524887A (en) * | 2009-03-26 | 2009-09-09 | 上海大学 | Energy-saving type cooling water circulating system and running mode of injection workshop |
| CN201714747U (en) * | 2010-06-13 | 2011-01-19 | 宝山钢铁股份有限公司 | Alarm device for hydraulic flow |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103309274A (en) * | 2013-05-17 | 2013-09-18 | 天津市天锻压力机有限公司 | Forging hydraulic press control method based on dual monitoring systems |
| CN103309274B (en) * | 2013-05-17 | 2017-02-08 | 天津市天锻压力机有限公司 | Forging hydraulic press control method based on dual monitoring systems |
| CN103707549B (en) * | 2013-12-17 | 2016-03-23 | 马钢(集团)控股有限公司 | Hydraulic press oil tank level supervising device |
| CN104047926A (en) * | 2014-06-20 | 2014-09-17 | 济钢集团有限公司 | Pump station oil leakage prevention and control method and system of hydraulic system and lubrication system |
| CN104061207A (en) * | 2014-06-23 | 2014-09-24 | 首钢京唐钢铁联合有限责任公司 | Method and system for judging oil leakage of rolling mill |
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Application publication date: 20120104 |