CN102679313B - False water level identification protection control system of electric heating steam generator - Google Patents
False water level identification protection control system of electric heating steam generator Download PDFInfo
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- CN102679313B CN102679313B CN2012101553737A CN201210155373A CN102679313B CN 102679313 B CN102679313 B CN 102679313B CN 2012101553737 A CN2012101553737 A CN 2012101553737A CN 201210155373 A CN201210155373 A CN 201210155373A CN 102679313 B CN102679313 B CN 102679313B
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Abstract
The invention discloses a false water level identification protection control system of an electric heating steam generator, which comprises a programmable logic controller (PLC); the PLC is connected with a power supply device; the two output electrodes Q5 and Q6 of the PLC are respectively connected with an electromagnetic valve and a buzzer; and one input electrode I2 of the PLC is respectively connected with a water level probe. According to the false water level identification protection control system of the electric heating steam generator, the structure is reasonable, the working performance is good, and the phenomenon that an electric heating tube is damaged due to 'false water level' can be effectively avoided.
Description
Technical field
The present invention relates to a kind of artifical water height identification protecting control system of electric heating steam generator.
Background technology
Electric heating steam generator is a kind of miniature boiler that produces automatically and continuously elevated pressures steam; can be industrial full steam iron essential steam is provided; comparatively common in clothes factory, electric heating steam generator mainly is comprised of water system, robot control system(RCS), flue and heating system and safety system etc.Its course of work is: after energising, at first water pump will add water to flue, when arriving water level point, stop adding water, heating tube is started working, after a few minutes, when gauge hand pointed to 0.4Mpa, automatic stopped heating, pressure restarted heating during lower than 0.35Mpa, now open the steam output valve, steam is exported by full steam iron.Steam output is arranged, and in stove, water level will reduce, and when lower than water level point, water pump moment is to flue moisturizing heating, keep pressure steadily.This shows: in order to reach energy-conservation purpose, steam generator adopts straightway pump to the quick moisturizing of flue, the electrothermal tube heating, the method of fast vaporizing, the water yield of being supplemented is seldom, requirement to level sensor is very high, namely require sensitivity and accuracy all to want high, and heatproof, though common ball float water level sensor heatproof, but sensitivity is low, can not reflect fast, the electrical type level sensor is heatproof not, through repetition test, only have the probe-type level sensor to meet the requirements, but there is a fatal shortcoming, be exactly that it belongs to direct measurement, on-line operation is under the water vapor of HTHP, the insulated enclosure performance worked long hours between two electrodes of probe is understood variation, can infiltrate trace water, and water conducts electricity, in the situation that there is no water, computer detection has water, i.e. so-called " artifical water height " phenomenon, " artifical water height " often can Lock-out, must take drying and processing apart, the most fearful is the second day start, existence due to " artifical water height ", the control panel erroneous judgement is broken water is arranged, water pump can not add water and directly heating to flue, cause the electric heating tube dry combustion method and the moment damage.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructurely, favorable working performance, can effectively avoid causing due to " artifical water height " reason the artifical water height identification protecting control system of the electric heating steam generator that electric heating tube burns out.
Technical solution of the present invention is:
A kind of artifical water height identification protecting control system of electric heating steam generator, it is characterized in that: comprise the PLC controller, the PLC controller is connected to supply unit, two output stage Q5, Q6 of PLC controller are connected with magnetic valve, buzzer respectively, and an input utmost point I2 of PLC controller is connected with water level probe respectively;
During start, PLC obtains electric work, at first enter the artifical water height recognizer, if anhydrous in flue, the normally opened contact of inputting utmost point I2 disconnects, normally-closed contact is connected, and auxiliary reclay M15 obtains electric and self-insurance, and main program inquiry auxiliary reclay M15 obtains after electric will exit the artifical water height recognizer, transfer the possession of the normal operation program, namely water pump adds water to flue;
When start enters the artifical water height recognizer, if the normally opened contact closure of input utmost point I2, illustrate in flue water is arranged, output stage Q5 obtains electric work, the electromagnet J5 of magnetic valve obtains electric, electromagnetic valve is opened in driving, start to discharge water, by time set T2, record discharge time simultaneously, if discharge time surpasses setting-up time, the normally opened contact closure of time set T2, output stage Q6 obtains electric, buzzer warning, and judgement is false water, the normally-closed contact of now inputting utmost point I2 disconnects, and auxiliary reclay M15 is in power failure state; If discharge water, do not surpass setting-up time, the normally opened contact of input utmost point I2 has disconnected, and explanation is true water, the normally-closed contact closure of input utmost point I2, and auxiliary reclay M15 obtains electric, exits the artifical water height recognizer, enters immediately the normal operation program.
The present invention is rational in infrastructure, and favorable working performance can effectively be avoided because " artifical water height " reason causes electric heating tube to burn out.
The accompanying drawing explanation
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is fundamental diagram of the present invention.
The specific embodiment
A kind of artifical water height identification protecting control system of electric heating steam generator, comprise PLC controller 1, the PLC controller is connected to supply unit, two output stage Q5, Q6 of PLC controller are connected with magnetic valve 2, buzzer 3 respectively, and an input utmost point I2 of PLC controller is connected with water level probe 4 respectively;
During start, PLC obtains electric work, at first enter the artifical water height recognizer, if anhydrous in flue, the normally opened contact of inputting utmost point I2 disconnects, normally-closed contact is connected, and auxiliary reclay M15 obtains electric and self-insurance, and main program inquiry auxiliary reclay M15 obtains after electric will exit the artifical water height recognizer, transfer the possession of the normal operation program, namely water pump adds water to flue;
When start enters the artifical water height recognizer, if the normally opened contact closure of input utmost point I2, illustrate in flue water is arranged, output stage Q5 obtains electric work, the electromagnet J5 of magnetic valve obtains electric, electromagnetic valve is opened in driving, start to discharge water, simultaneously by time set T2, record discharge time, if discharge time surpasses setting-up time, the normally opened contact closure of time set T2, output stage Q6 obtains electric, buzzer warning, judgement is false water, need to repair probe, the normally-closed contact of now inputting utmost point I2 disconnects, auxiliary reclay M15 is in power failure state, so program can not proceed to the normal operation program, just can not start electric heating tube work yet, be that the artifical water height state can be protected heating tube effectively, if discharge water, do not surpass setting-up time, the normally opened contact of input utmost point I2 has disconnected, and explanation is true water, the normally-closed contact closure of input utmost point I2, and auxiliary reclay M15 obtains electric, exits the artifical water height recognizer, enters immediately the normal operation program.
The I/O of PLC of the present invention distributes in Table 1, table 2.
Table 1: input distributes
| Input signal | INADD number |
| Water level probe | I2 |
Table 2: output distributes
| The output executive component | OPADD number |
| Blowoff electromagnetic valve | Q5 |
| Buzzer | Q6 |
Hold facility the input point of PLC, two output points.
Claims (1)
1. the artifical water height identification protecting control system of an electric heating steam generator, it is characterized in that: comprise the PLC controller, the PLC controller is connected to supply unit, two output stage Q5, Q6 of PLC controller are connected with magnetic valve, buzzer respectively, and an input utmost point I2 of PLC controller is connected with water level probe respectively;
During start, PLC obtains electric work, at first enter the artifical water height recognizer, if anhydrous in flue, the normally opened contact of inputting utmost point I2 disconnects, normally-closed contact is connected, and auxiliary reclay M15 obtains electric and self-insurance, and main program inquiry auxiliary reclay M15 obtains after electric will exit the artifical water height recognizer, transfer the possession of the normal operation program, namely water pump adds water to flue;
When start enters the artifical water height recognizer, if the normally opened contact closure of input utmost point I2, illustrate in flue water is arranged, output stage Q5 obtains electric work, the electromagnet J5 of magnetic valve obtains electric, electromagnetic valve is opened in driving, start to discharge water, by time set T2, record discharge time simultaneously, if discharge time surpasses setting-up time, the normally opened contact closure of time set T2, output stage Q6 obtains electric, buzzer warning, and judgement is false water, the normally-closed contact of now inputting utmost point I2 disconnects, and auxiliary reclay M15 is in power failure state; If discharge water, do not surpass setting-up time, the normally opened contact of input utmost point I2 has disconnected, and explanation is true water, the normally-closed contact closure of input utmost point I2, and auxiliary reclay M15 obtains electric, exits the artifical water height recognizer, enters immediately the normal operation program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101553737A CN102679313B (en) | 2012-05-18 | 2012-05-18 | False water level identification protection control system of electric heating steam generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101553737A CN102679313B (en) | 2012-05-18 | 2012-05-18 | False water level identification protection control system of electric heating steam generator |
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| Publication Number | Publication Date |
|---|---|
| CN102679313A CN102679313A (en) | 2012-09-19 |
| CN102679313B true CN102679313B (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101553737A Expired - Fee Related CN102679313B (en) | 2012-05-18 | 2012-05-18 | False water level identification protection control system of electric heating steam generator |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503358B (en) * | 2014-12-30 | 2017-06-30 | 天津森罗科技股份有限公司 | Fruits and vegetables accelerate the ripening the control device preventing dry fry of Ethylene Generator |
| CN108946638B (en) * | 2017-05-25 | 2020-12-01 | 佛山市顺德区美的饮水机制造有限公司 | Control method for detecting water level in soda water tank and soda water machine |
| CN108224401A (en) * | 2018-03-14 | 2018-06-29 | 华北电力大学 | Supercritical water burn-out-proof dry systems device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0167257A1 (en) * | 1984-06-01 | 1986-01-08 | Honeywell Inc. | Boiler water level monitoring |
| CN2502249Y (en) * | 2001-11-13 | 2002-07-24 | 张跃 | Cooling agent liquid level sensor |
| CA2565388A1 (en) * | 2006-03-15 | 2007-09-15 | Potter Electric Signal Company | Fluid detector recognizing foam and surge conditions |
| CN201152770Y (en) * | 2007-10-06 | 2008-11-19 | 陈际军 | Liquid level sensor |
| CN101949725A (en) * | 2010-10-09 | 2011-01-19 | 德州赛佳新能源科技有限公司 | New liquid angular position sensor and water level measuring method |
| CN102312040A (en) * | 2010-07-09 | 2012-01-11 | 宝山钢铁股份有限公司 | Four-impulse control method for steam drum water level of converter |
-
2012
- 2012-05-18 CN CN2012101553737A patent/CN102679313B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0167257A1 (en) * | 1984-06-01 | 1986-01-08 | Honeywell Inc. | Boiler water level monitoring |
| CN2502249Y (en) * | 2001-11-13 | 2002-07-24 | 张跃 | Cooling agent liquid level sensor |
| CA2565388A1 (en) * | 2006-03-15 | 2007-09-15 | Potter Electric Signal Company | Fluid detector recognizing foam and surge conditions |
| CN201152770Y (en) * | 2007-10-06 | 2008-11-19 | 陈际军 | Liquid level sensor |
| CN102312040A (en) * | 2010-07-09 | 2012-01-11 | 宝山钢铁股份有限公司 | Four-impulse control method for steam drum water level of converter |
| CN101949725A (en) * | 2010-10-09 | 2011-01-19 | 德州赛佳新能源科技有限公司 | New liquid angular position sensor and water level measuring method |
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| CN102679313A (en) | 2012-09-19 |
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