CN102493147B - Concentrated alkaline concentration online measurement and control system - Google Patents
Concentrated alkaline concentration online measurement and control system Download PDFInfo
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- CN102493147B CN102493147B CN201110388405.3A CN201110388405A CN102493147B CN 102493147 B CN102493147 B CN 102493147B CN 201110388405 A CN201110388405 A CN 201110388405A CN 102493147 B CN102493147 B CN 102493147B
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Abstract
The invention discloses a concentrated alkaline concentration online measurement and control system, which comprises at least two dipping tanks, a filter box, an alkaline preparation tank, a measurement tank and a programmable logic controller, wherein a temperature measurement device and a first liquid level measurement device are installed in one dipping tank; a second liquid level measurement device is installed on the filter box, and the inlet of the filter box is communicated with the outlet of the dipping tank No.2; a third liquid level measurement device is installed in the alkaline preparation tank, the inlet of the alkaline preparation tank is communicated with the outlet of the filter box, the inlet of the alkaline preparation tank is respectively communicated with a basic material pipeline on which a concentrated alkaline control and regulating valve is assembled, a water pipeline on which a water control and regulating valve is assembled, and a first branch of a self-circulation pipeline, and a third branch is communicated with the inlet of the dipping tank No.1; and a pressure measurement device, a density measurement device and a fully-immersed sensor are installed in the measurement tank, and the measurement tank is installed in the alkaline preparation tank. The system is adopted to ensure the alkaline concentration of printing and dyeing equipment to be consistent all the time.
Description
Technical field
The present invention relates to the detection control system in a kind of dyeing apparatus, the invention particularly relates to a kind ofly can real-time online detect, the concentrated base concentration online detection and control system of concentration of lye in allotment dipping tank.
Background technology
In dyeing and printing process process, the immersion dipping tank that needs to weave cotton cloth carries out mercerization finish, thereby in dipping tank, alkali concn is key technological parameter, and its maintenance is constant particularly important, and alkali concn directly affects appearance of fabrics quality, dyeing and postfinishing process.Existing dyeing apparatus carries out manual titration to the normal alkali lye of getting in dipping tank that adopts of the detection method of alkali concn when fabric mercerising, then according to technological requirement, adjusts its concentration.Adopt manual titration's method not measure in real time continuously concentrated base concentration, in interval time of measurement, for alkali concn, change and can not adjust in time parameter, life period hysteresis quality and alignment error, certainty of measurement is low, can not meet the requirement of consecutive production; Adopt the artificial concentration of adjusting simultaneously, can not realize the automation of control, increase recruitment quantity and human cost, cause the wastings of resources such as the many and water of product substandard products, vapour, medicament, increasing cost of sewage disposal, affects environment.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, provide a kind of and can detect, allocate concentrated base concentration in dipping tank by real-time online, guarantee that in printing and dyeing equipment, concentration of lye remains unanimously, meet the concentrated base concentration online detection and control system of fabric mercerising requirement.
A concentrated base concentration online detection and control system, it comprises:
(a) at least two dipping tanks, are connected by connecting line between these at least two dipping tanks, in a dipping tank, temperature-detecting device and the first liquid level detection device are installed therein;
(b) Rose Box that the second liquid level detection device is installed on it, the import of this Rose Box is reclaimed inlet ductwork and is connected with the outlet of 2# dipping tank by the light alkali of the first hand-operated valve is housed on it;
(c) one the 3rd liquid level detection device is installed in it join alkali groove, this import of joining alkali groove by the light alkali of the second hand-operated valve and frequency conversion self-absorbing filtering pump be housed on it reclaim that export pipeline is connected with the outlet of described Rose Box and import that this joins alkali groove respectively with its on the raw material alkali pipeline that concentrated base controls to adjust valve is housed, the water lines of water management control valve is housed on it and the first branch road of self-loopa pipeline is connected, the 3rd hand-operated valve is installed on the first described branch road, the 4th hand-operated valve and self-circulating pump is housed on described self-loopa pipeline, described self-loopa delivery side of pump and first, the second and the 3rd branch road is connected, the 3rd branch road that the 6th hand-operated valve is housed on it is connected with the import of 1# dipping tank,
(d) a detection groove that pressure-detecting device, device for detecting density and full immersed type sensor are installed in it, this detection groove is arranged on described joining in alkali groove, and the second branch road that the 5th hand-operated valve is housed on it is connected with described detection groove;
(e) Programmable Logic Controller, the signal input part of this Programmable Logic Controller is connected the measuring-signal reading to be carried out to computational analysis and compares with setting value with the signal output part of described pressure, density, first, second and third liquid level detection device and temperature-detecting device, then export control signal and control to adjust valve, water management control valve, self-circulating pump and frequency conversion self-absorbing filtering pump and complete data communication with touch-screen to concentrated base, show test data and curve.
Adopt the beneficial effect of native system to be:
Described raw material alkali lye is entered and is joined alkali groove by electric control valve, Programmable Logic Controller carries out intellectuality adjusting according to concentration set point and detected value to the aperture of control valve, described self-loopa alkali lye carrys out the 1st branch road of self frequency-changing's self-suction circulation pump output, the solution concentration that makes to join alkali groove is even, shortens the adjustment time.
Described detection groove is placed in joins in alkali groove, and the 2nd branch road of frequency conversion self-suction circulation pump output enters detection groove.In system running, detect groove all the time in overflow situation, guaranteed that the liquid level of detection groove is constant, on-the-spot service data shows, under the condition that adjustment self-loopa flow stirs, in detection groove, the concentration of solution and the concentration of solution in adjustment tank are consistent.
Described concentrated base concentration online detection and control system is carried out data fusion by the measurement result of checkout gear, improved and detected the accuracy of data, the dynamic property of system and control accuracy, reach ± 2g/L of the control accuracy of alkali concn, control system overshoot≤4.3%; Realized the following of each tank liquor position, evenly, realized again the decoupling zero of liquid level and flow, in dynamic process, 1# alkali groove and the level fluctuation of joining alkali groove are within the scope of ± 5mm.Adopt native system to detect, to allocate concentrated base concentration in dipping tank by real-time online, guarantee that in printing and dyeing equipment, concentration of lye remains unanimously, meet the requirement of fabric mercerising.
Accompanying drawing explanation
Accompanying drawing is the structural representation of concentrated base concentration online detection and control system of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of concentrated base concentration online detection and control system of the present invention as shown in drawings, it comprises (a) at least two dipping tanks 1,4, between these at least two dipping tanks, by connecting line, be connected, temperature-detecting device 2 and the first liquid level detection device 3 are installed in a dipping tank therein, (b) Rose Box 10 that the second liquid level detection device is installed on it, the import of this Rose Box is reclaimed inlet ductwork 9 and is connected with the outlet of 2# dipping tank 1 by the light alkali of the first hand-operated valve is housed on it, (c) one the 3rd liquid level detection device 20 is installed in it join alkali groove 17, this import of joining alkali groove by the light alkali of the second hand-operated valve 11 and frequency conversion self-absorbing filtering pump 12 be housed on it reclaim that export pipeline is connected with the outlet of described Rose Box and import that this joins alkali groove respectively with its on the raw material alkali pipeline 5 that concentrated base controls to adjust valve 7 is housed, the water lines 6 of water management control valve 8 is housed on it and the first branch road of self-loopa pipeline 18 is connected, the 3rd hand-operated valve is installed on the first described branch road, the 4th hand-operated valve and self-circulating pump is housed on described self-loopa pipeline, described self-loopa delivery side of pump and first, the second and the 3rd branch road is connected, the 3rd branch road 19 that the 6th hand-operated valve is housed on it is connected with the import of 1# dipping tank 4, (d) a detection groove 15 that pressure-detecting device 13, device for detecting density 14 and full immersed type sensor 16 are installed in it, this detection groove is arranged on described joining in alkali groove, and the second branch road that the 5th hand-operated valve is housed on it is connected with described detection groove, (e) Programmable Logic Controller, the signal input part of this Programmable Logic Controller is connected the measuring-signal reading to be carried out to computational analysis and compares with setting value with the signal output part of described pressure, density, first, second and third liquid level detection device and temperature-detecting device, then export control signal and control to adjust valve, water management control valve, self-circulating pump and frequency conversion self-absorbing filtering pump and complete data communication with touch-screen to concentrated base, show test data and curve.
Described Rose Box is for removing the impurity of the weak lye of recovery, and this equipment comprises filter and rotary drum motor, can buy in market.
Described detection groove can be divided into four lattice by netted dividing plate, and the 1st lattice are buffering lattice, and other 3 lattice are inserted respectively pressure, density and full immersed type sensor.
This device running is as follows:
After allotment, alkali lye enters 1# alkali groove 4, then by connecting line, enter 2# alkali groove 1, the mercerizing diluting alkali solution that described 2# alkali groove 4 produces reclaims export pipeline and enters Rose Box 10 through light alkali recovery inlet ductwork 9, light alkali, and enter and join alkali groove 17 by frequency conversion self-absorbing filtering pump, the circulation buck that the concentrated base in raw material alkali pipeline 5, the water in water lines 6, self-loopa pipeline 18 flow out enters simultaneously joins alkali groove 17.Described raw material alkali lye and water enter adjustment tank by electric control valve, Programmable Logic Controller carries out intellectuality adjusting according to concentration set point and detected value to the aperture of control valve, described self-loopa pipeline alkali lye is from the 1st branch road of self-circulating pump output, the solution concentration that makes to join alkali groove is even, shortens the adjustment time.Described detection groove is placed in joins in alkali groove, and the 2nd branch road of self-circulating pump output enters detection groove.The 3rd branch road of self-circulating pump output enters 1# alkali groove.
The signal input part of Programmable Logic Controller is connected that with the signal output part of described pressure, density, first, second and third liquid level detection device and temperature-detecting device the measuring-signal reading is weighted to coefficient method computational analysis, then exports control signal and controls to adjust valve, water management control valve, self-circulating pump and frequency conversion self-absorbing filtering pump to concentrated base.Thereby Programmable Logic Controller guarantees to join the constant concentration of alkali lye in alkali groove by controlling concentrated base control and regulation valve control valve, the aperture of water management control valve and the flow of self-circulating pump and frequency conversion self-absorbing filtering pump, also can guarantee the constant concentration of alkali lye in alkali groove.
Claims (2)
1. a concentrated base concentration online detection and control system, is characterized in that it comprises:
(a) at least two dipping tanks, are connected by connecting line between these at least two dipping tanks, in a dipping tank, temperature-detecting device and the first liquid level detection device are installed therein;
(b) Rose Box that the second liquid level detection device is installed on it, the import of this Rose Box is reclaimed inlet ductwork and is connected with the outlet of 2# dipping tank by the light alkali of the first hand-operated valve is housed on it;
(c) one the 3rd liquid level detection device is installed in it join alkali groove, this import of joining alkali groove by the light alkali of the second hand-operated valve and frequency conversion self-absorbing filtering pump be housed on it reclaim that export pipeline is connected with the outlet of described Rose Box and import that this joins alkali groove respectively with its on the raw material alkali pipeline that concentrated base controls to adjust valve is housed, the water lines of water management control valve is housed on it and the first branch road of self-loopa pipeline is connected, the 3rd hand-operated valve is installed on the first described branch road, the 4th hand-operated valve and self-circulating pump is housed on described self-loopa pipeline, described self-loopa delivery side of pump and first, the second and the 3rd branch road is connected, the 3rd branch road that the 6th hand-operated valve is housed on it is connected with the import of 1# dipping tank,
(d) a detection groove that pressure-detecting device, device for detecting density and full immersed type sensor are installed in it, this detection groove is arranged on described joining in alkali groove, and the second branch road that the 5th hand-operated valve is housed on it is connected with described detection groove;
(e) Programmable Logic Controller, the signal input part of this Programmable Logic Controller is connected the measuring-signal reading to be carried out to computational analysis and compares with setting value with the signal output part of described pressure, density, first, second and third liquid level detection device and temperature-detecting device, then export control signal and control to adjust valve, water management control valve, self-circulating pump and frequency conversion self-absorbing filtering pump and complete data communication with touch-screen to concentrated base, show test data and curve.
2. concentrated base concentration online detection and control system according to claim 1, is characterized in that: described detection groove is divided into four lattice by netted dividing plate, and the 1st lattice are buffering lattice, and other 3 lattice are placed with respectively pressure, density and full immersed type sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110388405.3A CN102493147B (en) | 2011-11-29 | 2011-11-29 | Concentrated alkaline concentration online measurement and control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110388405.3A CN102493147B (en) | 2011-11-29 | 2011-11-29 | Concentrated alkaline concentration online measurement and control system |
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| CN102493147A CN102493147A (en) | 2012-06-13 |
| CN102493147B true CN102493147B (en) | 2014-04-02 |
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| CN201110388405.3A Expired - Fee Related CN102493147B (en) | 2011-11-29 | 2011-11-29 | Concentrated alkaline concentration online measurement and control system |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850074A (en) * | 2014-03-17 | 2014-06-11 | 佛山市金铭机械制造有限公司 | On-line measuring and controlling system for alkali concentration in printing and dyeing pretreatment process |
| CN103983747B (en) * | 2014-05-30 | 2016-03-02 | 常州市宏大电气有限公司 | Dyeing and printing process liquid on-line continuous concentration detection apparatus |
| CN107034613B (en) * | 2017-05-09 | 2019-02-12 | 徐远理 | For the dyeing and finishing liquid control system and its control method of concentration can not to be monitored on-line |
| US11833480B2 (en) * | 2018-03-15 | 2023-12-05 | Proterial, Ltd. | Slurry storage and stirring device and slurry stirring method |
| CN108823865A (en) * | 2018-09-03 | 2018-11-16 | 安庆华茂佰斯特纺织科技有限公司 | It prints and dyes straight roller mercerizing machine lye multiplexer and its application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5846265A (en) * | 1996-07-26 | 1998-12-08 | North Carolina State University | Closed-loop textile dyeing process utilizing real-time metered dosing of dyes and chemicals |
| CN200943150Y (en) * | 2006-06-06 | 2007-09-05 | 浙江印染机械有限公司 | Strong alkali concentration on-line detecting control system |
| CN201317869Y (en) * | 2008-11-20 | 2009-09-30 | 绍兴则圆自动控制设备有限公司 | Alkalinity automatic controlling device |
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2011
- 2011-11-29 CN CN201110388405.3A patent/CN102493147B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5846265A (en) * | 1996-07-26 | 1998-12-08 | North Carolina State University | Closed-loop textile dyeing process utilizing real-time metered dosing of dyes and chemicals |
| CN200943150Y (en) * | 2006-06-06 | 2007-09-05 | 浙江印染机械有限公司 | Strong alkali concentration on-line detecting control system |
| CN201317869Y (en) * | 2008-11-20 | 2009-09-30 | 绍兴则圆自动控制设备有限公司 | Alkalinity automatic controlling device |
Non-Patent Citations (3)
| Title |
|---|
| 染整工艺碱液的自动配制系统设计;顾盛娜等;《仪器仪表用户》;20081231;第15卷(第5期);第45-46页 * |
| 顾仁等.MAX-300型浓碱浓度在线检测及自动加碱系统(二).《染整技术》.2011,第33卷(第4期),第53-55页. * |
| 顾盛娜等.染整工艺碱液的自动配制系统设计.《仪器仪表用户》.2008,第15卷(第5期),第45-46页. |
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