CN101799312A - Dynamic weighing system of high-viscosity fluid and method thereof - Google Patents
Dynamic weighing system of high-viscosity fluid and method thereof Download PDFInfo
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- CN101799312A CN101799312A CN 201010120967 CN201010120967A CN101799312A CN 101799312 A CN101799312 A CN 101799312A CN 201010120967 CN201010120967 CN 201010120967 CN 201010120967 A CN201010120967 A CN 201010120967A CN 101799312 A CN101799312 A CN 101799312A
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Abstract
The invention relates to a dynamic weighing system of a high-viscosity fluid and a method thereof. The scale body output end of the system is simultaneously connected with a weight display instrument and a weighing controller. An output control end of the weighing controller is connected with a high-viscosity fluid barrel pump through a frequency converter; and the high-viscosity fluid is pumped into a scale body by the high-viscosity fluid barrel pump through a pump rod inserted into a high-viscosity fluid barrel. By using the method, the high-viscosity fluid is pumped into the scale body by the high-viscosity fluid barrel pump, the scale body feeds a weighing signal back to the weighing controller, and the weighing controller controls the pump speed of the high-viscosity fluid barrel pump through the frequency converter by adopting a dynamic difference compensation method and a method for measuring minimum flow according to control parameters. The invention has reasonable design, achieves the dynamic accurate weighing function on the high-viscosity fluid, ensures the weighing precision and the weighing speed, meets the requirement on the dynamic accurate weighing of the high-viscosity fluid, and also has the characteristics of convenient use and wide application range.
Description
Technical field
The invention belongs to the fluid metering field, especially a kind of dynamic weighing system of high-viscosity fluid and method thereof.
Background technology
In industrial processes, often need the convection cell raw material to carry out dynamic weighing.Low viscous flow body use traffic meter or gear-type pump just can be realized accurate dynamic measurement, and still, use traffic meter or gear-type pump can not carry out accurate dynamic measurement up to the fluid of 10000cps to viscosity.Though adopt the double speed valve to carry out dynamic measurement to high-viscosity fluid,, adopt the double speed valve to carry out high-viscosity fluid and weigh and have the low and problem such as serious that lags behind of weighing precision.Therefore, prior art can not be carried out accurate dynamic weighing to high-viscosity fluid.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of reasonable in design, the dynamic weighing system and method thereof that can guarantee the high-viscosity fluid of the weighing precision and the speed of weighing is provided.
The present invention solves its technical matters and takes following technical scheme to realize:
A kind of dynamic weighing system of high-viscosity fluid, comprise high-viscosity fluid charging basket, scale body, weight display instrument, the output terminal of scale body is connected with the weight display instrument, the output terminal of this scale body also connects a weighing controller, the output control terminal of this weighing controller is connected with the input end of frequency converter, the output terminal of this frequency converter is connected with the high-viscosity fluid barrel pump, and this high-viscosity fluid barrel pump pumps into the scale body by the pump rod that is inserted in the high-viscosity fluid charging basket with high-viscosity fluid.
And the output terminal of described scale body is connected by the PROFIBUS-DP bus mode with weight display instrument and weighing controller.
And described weighing controller also is provided with communication port and is connected with upper control machine.
And described weighing controller is made of Programmable Logic Controller.
A kind of dynamic weighing method of high-viscosity fluid may further comprise the steps:
⑴ weighing controller is according to the raw material weight of high-viscosity fluid, and the original frequency of determining frequency converter pumps into high-viscosity fluid from the high-viscosity fluid charging basket also by the pump speed of Frequency Converter Control high-viscosity fluid barrel pump in the scale body;
⑵ scale body feeds back to weighing controller with weighing-up wave, and weighing controller adopts dynamic difference penalty method according to controlled variable and passes through the pump speed of Frequency Converter Control high-viscosity fluid barrel pump;
⑶ when detect weight signal near desired value when weighing controller, adopt the pump speed of measuring the minimum flow method and reducing the high-viscosity fluid barrel pump by frequency converter.
And described controlled variable comprises the interior liquid level of raw material weight, the high-viscosity fluid charging basket of high-viscosity fluid, the pump speed of high-viscosity fluid barrel pump.
And described controlled variable is by the weighing controller setting or by the upper control machine setting.
Advantage of the present invention and good effect are:
1, this dynamic weighing system constitutes a closed-loop system by weighing controller, frequency converter, high-viscosity fluid barrel pump and scale body, the scale body can feed back to weighing controller in time with weighing-up wave, weighing controller adopts dynamic difference compensation and measures the pump speed that the minimum flow dynamic algorithm also passes through Frequency Converter Control high viscosity barrel pump, realized dynamically accurate function of weighing to high-viscosity fluid, guaranteed weighing precision and the speed of weighing, satisfied the requirement of dynamically accurately weighing high-viscosity fluid.
2, this dynamic weighing system can be provided with the raw material weight and the various controlled variable thereof of high-viscosity fluid by weighing controller or upper control machine, is adapted to the dynamic weighing of various different high-viscosity fluids, has characteristics easy to use, that the scope of application is extensive.
3, this dynamic weighing method adopts dynamic interpolation compensation method to come leftover materials weight is revised in real time, when weighing controller detects weight signal near desired value, adopt the pump speed of measuring the minimum flow method and reducing the high-viscosity fluid barrel pump by frequency converter, it is slowed down up to being interrupted titration state, overcome impulsive force and reserved the influence of quality of material, guaranteed the precision of weighing precision.
4, the present invention is reasonable in design, has realized the dynamically accurate function of weighing to high-viscosity fluid, has guaranteed weighing precision and the speed of weighing, and has satisfied the requirement of dynamically accurately weighing to high-viscosity fluid, has characteristics easy to use, that the scope of application is extensive simultaneously.
Description of drawings
Fig. 1 is a weighing system connection diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is further described.
A kind of dynamic weighing system of high-viscosity fluid as shown in Figure 1, is connected and composed by upper control machine, weighing controller, frequency converter, high-viscosity fluid barrel pump, high-viscosity fluid charging basket, scale body, weight display instrument.Upper control machine is connected with the communication interface of weighing controller, realizes the control function of upper control machine to weighing controller.Weighing controller is made of Programmable Logic Controller, be built-in with the dynamic weighing control program in the weighing controller, upper control machine and weighing controller are provided with man-machine interface, and the raw material weight and the various controlled variable thereof of high-viscosity fluid can be set by upper control machine and weighing controller.The output control terminal of this weighing controller is connected with the input end of frequency converter, and the output terminal of this frequency converter is connected with the high-viscosity fluid barrel pump, by the pump speed of this Frequency Converter Control high-viscosity fluid barrel pump; This high-viscosity fluid barrel pump inserts in the high-viscosity fluid charging basket by pump rod, by the high-viscosity fluid barrel pump high-viscosity fluid is pumped into the scale body from the high-viscosity fluid charging basket.Realization is got high-viscosity fluid process and is controlled the flow velocity of high-viscosity fluid to the pump of scale body from the high-viscosity fluid charging basket; The scale body adopts high precision scale body that higher weighing precision can be provided, the output terminal of this scale body is by PROFIBUS-DP bus mode while and weight display instrument and weighing controller, the weight signal of scale body output sends the weight display instrument to by the PROFIBUS-DP bus and shows in real time and feed back to weighing controller, by weighing controller dynamic calculation weigh difference and rate of flow of fluid, by the pump speed of control of conversion device, realized dynamically accurate function of weighing then to high-viscosity fluid with adjusting high-viscosity fluid barrel pump.
Can realize that according to the dynamic weighing system of above-mentioned high-viscosity fluid the dynamic weighing method of high-viscosity fluid, the dynamic weighing method of this high-viscosity fluid are to be realized by the control program that is installed in the weighing controller, may further comprise the steps:
⑴ weighing controller is according to the raw material weight of high-viscosity fluid, and the original frequency of determining frequency converter pumps into high-viscosity fluid from the high-viscosity fluid charging basket also by the pump speed of Frequency Converter Control high-viscosity fluid barrel pump in the scale body.
⑵ scale body feeds back to weighing controller with weighing-up wave, and weighing controller adopts dynamic difference penalty method according to controlled variable and passes through the pump speed of Frequency Converter Control high-viscosity fluid barrel pump;
In this step, controlled variable comprises the interior liquid level of raw material weight, the high-viscosity fluid charging basket of high-viscosity fluid, the pump speed of high-viscosity fluid barrel pump, and above-mentioned controlled variable is by the weighing controller setting or by the upper control machine setting.
⑶ when detect weight signal near desired value when weighing controller, adopt the pump speed of measuring the minimum flow method and reducing the high-viscosity fluid barrel pump by frequency converter, make the high-viscosity fluid pump speed of getting slow down up to being interrupted titration state, adopt this method to overcome impulsive force and of the influence of reservation quality of material, guaranteed the precision of weighing precision.
By above-mentioned three steps, realized dynamically accurate function of weighing to high-viscosity fluid.Simultaneously, in order to show the weight of weighing intuitively, the scale body also sends weighing-up wave to the weight display instrument when weighing-up wave is fed back to weighing controller, weighed by the real-time Display Scale body of weight display instrument.
Embodiment of the present invention is illustrative; rather than it is determinate; therefore invention is not limited to the embodiment described in the embodiment, and every other embodiments that drawn by those skilled in the art's technical scheme according to the present invention belong to the scope of protection of the invention equally.
Claims (7)
1. the dynamic weighing system of a high-viscosity fluid, comprise high-viscosity fluid charging basket, scale body, weight display instrument, the output terminal of scale body is connected with the weight display instrument, it is characterized in that: the output terminal of this scale body also connects a weighing controller, the output control terminal of this weighing controller is connected with the input end of frequency converter, the output terminal of this frequency converter is connected with the high-viscosity fluid barrel pump, and this high-viscosity fluid barrel pump pumps into the scale body by the pump rod that is inserted in the high-viscosity fluid charging basket with high-viscosity fluid.
2. the dynamic weighing system of high-viscosity fluid according to claim 1, it is characterized in that: the output terminal of described scale body is connected by the PROFIBUS-DP bus mode with weight display instrument and weighing controller.
3. the dynamic weighing system of high-viscosity fluid according to claim 1, it is characterized in that: described weighing controller also is provided with communication port and is connected with upper control machine.
4. according to the dynamic weighing system of each described high-viscosity fluid of claim 1～3, it is characterized in that: described weighing controller is made of Programmable Logic Controller.
5. the dynamic weighing method of a high-viscosity fluid is characterized in that: may further comprise the steps:
⑴ weighing controller is according to the raw material weight of high-viscosity fluid, and the original frequency of determining frequency converter pumps into high-viscosity fluid from the high-viscosity fluid charging basket also by the pump speed of Frequency Converter Control high-viscosity fluid barrel pump in the scale body;
⑵ scale body feeds back to weighing controller with weighing-up wave, and weighing controller adopts dynamic difference penalty method according to controlled variable and passes through the pump speed of Frequency Converter Control high-viscosity fluid barrel pump;
⑶ when detect weight signal near desired value when weighing controller, adopt the pump speed of measuring the minimum flow method and reducing the high-viscosity fluid barrel pump by frequency converter.
6. the dynamic weighing method of high-viscosity fluid according to claim 5 is characterized in that: described controlled variable comprises the raw material weight, the liquid level in the high-viscosity fluid charging basket, the pump speed of high-viscosity fluid barrel pump of high-viscosity fluid.
7. according to the dynamic weighing method of claim 5 or 6 described high-viscosity fluids, it is characterized in that: described controlled variable is by the weighing controller setting or by the upper control machine setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010120967 CN101799312A (en) | 2010-03-10 | 2010-03-10 | Dynamic weighing system of high-viscosity fluid and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010120967 CN101799312A (en) | 2010-03-10 | 2010-03-10 | Dynamic weighing system of high-viscosity fluid and method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115659A (en) * | 2013-01-30 | 2013-05-22 | 昆明理工大学 | Dynamic weighing method and dynamic weighing system for aqueous fluid material |
| CN106363758A (en) * | 2016-11-14 | 2017-02-01 | 漳州捷龙自动化技术有限公司 | Double-measurement glue applying system |
| CN108254052A (en) * | 2018-02-01 | 2018-07-06 | 黑龙江大学 | Improve the weighing system and weighing method of fluid weighing accuracy and speed |
| CN113310558A (en) * | 2021-05-24 | 2021-08-27 | 东莞市琅菱机械有限公司 | High-precision powder metering system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4221732A1 (en) * | 1992-07-02 | 1994-01-05 | Fluid Verfahrenstechnik Gmbh | Dispensing system for pastes or poorly flowing material e.g. colour paste - has control valve in pipe leading from pressurised reservoir container to dispensing tube, located over gravimetric quantity meter, and uses pressure to provide controlled outflow when control valve closes. |
| JPH0989639A (en) * | 1995-09-26 | 1997-04-04 | Fuji Photo Film Co Ltd | Metering apparatus for liquid |
| WO1998030872A1 (en) * | 1997-01-10 | 1998-07-16 | Genera S.R.L. | Method for metering liquids |
| CN101135586A (en) * | 2006-08-31 | 2008-03-05 | 上海梅山钢铁股份有限公司 | Measurement control method of hopper scale used for feeding revolving furnace |
-
2010
- 2010-03-10 CN CN 201010120967 patent/CN101799312A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4221732A1 (en) * | 1992-07-02 | 1994-01-05 | Fluid Verfahrenstechnik Gmbh | Dispensing system for pastes or poorly flowing material e.g. colour paste - has control valve in pipe leading from pressurised reservoir container to dispensing tube, located over gravimetric quantity meter, and uses pressure to provide controlled outflow when control valve closes. |
| JPH0989639A (en) * | 1995-09-26 | 1997-04-04 | Fuji Photo Film Co Ltd | Metering apparatus for liquid |
| WO1998030872A1 (en) * | 1997-01-10 | 1998-07-16 | Genera S.R.L. | Method for metering liquids |
| CN101135586A (en) * | 2006-08-31 | 2008-03-05 | 上海梅山钢铁股份有限公司 | Measurement control method of hopper scale used for feeding revolving furnace |
Non-Patent Citations (3)
| Title |
|---|
| 《中国科技信息》 20071231 张力 基于应变测量的液体动态称重技术研究 268-269,274 1-7 , 第21期 2 * |
| 《中国计量学院学报》 20080930 刘立业等 提高粘性食品称重精度方法的研究 225-228 1-7 第19卷, 第3期 2 * |
| 《仪器仪表学报》 20091031 李智辉 高粘度流体动态自适应称重系统的研究 338-341 1-7 第30卷, 第10期 2 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115659A (en) * | 2013-01-30 | 2013-05-22 | 昆明理工大学 | Dynamic weighing method and dynamic weighing system for aqueous fluid material |
| CN106363758A (en) * | 2016-11-14 | 2017-02-01 | 漳州捷龙自动化技术有限公司 | Double-measurement glue applying system |
| CN108254052A (en) * | 2018-02-01 | 2018-07-06 | 黑龙江大学 | Improve the weighing system and weighing method of fluid weighing accuracy and speed |
| CN113310558A (en) * | 2021-05-24 | 2021-08-27 | 东莞市琅菱机械有限公司 | High-precision powder metering system |
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Open date: 20100811 |