CN111721377A - Liquid phase detection method of intelligent sight glass - Google Patents
Liquid phase detection method of intelligent sight glass Download PDFInfo
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- CN111721377A CN111721377A CN202010651808.1A CN202010651808A CN111721377A CN 111721377 A CN111721377 A CN 111721377A CN 202010651808 A CN202010651808 A CN 202010651808A CN 111721377 A CN111721377 A CN 111721377A
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- sight glass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/80—Arrangements for signal processing
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- Engineering & Computer Science (AREA)
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a liquid phase detection method of an intelligent sight glass, which is characterized in that the intelligent sight glass is arranged at a corresponding position between a reaction kettle and an automatic control valve, so that a change area presented by a liquid phase of an industrial material is completely in a field detection range of the intelligent sight glass; the method comprises the steps of adding materials into a reaction kettle for reaction, starting a self-control valve at the bottom of the reaction kettle and a self-control valve of an inorganic phase or an organic phase after the layered operation of the materials in the reaction kettle is started, enabling the materials to flow through a sight glass at the moment, sampling the materials in real time by a liquid level meter in an intelligent sight glass, carrying out special operation and processing on obtained images, outputting a standard industrial signal in real time, and feeding the signal back to an industrial automation DCS (distributed control System) so as to enable the industrial automation DCS to carry out opening or closing adjustment on the self-control valve at the bottom of the reaction kettle and the self-control valve of the inorganic phase or.
Description
Technical Field
The invention relates to the technical field of liquid phase detection of intelligent sight glasses, in particular to a liquid phase detection method of an intelligent sight glass.
Background
Conventional liquid phase detection methods generally include: the visual observation method, the conductivity method, the ultrasonic method and the density method are immature, so in the traditional liquid phase separation production, generally, the materials are separated by controlling the size of a valve through a manual observation sight glass, the materials are different, the liquid phase colors of the materials are similar, the manual observation is easy to make a judgment mistake, the operation methods of each worker are different, certain errors exist in the control layering process, the materials are often carried along with the materials to be separated, if the manual operation is completely relied on, the consistency of the process cannot be guaranteed, the process flow becomes an 'information isolated island', the information construction of the whole production flow is influenced, and the improvement is necessary.
Disclosure of Invention
The invention aims to provide a liquid phase detection method of an intelligent sight glass, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a liquid phase detection method of an intelligent sight glass comprises the following steps:
A. installing the intelligent sight glass at a corresponding position between the reaction kettle and the automatic control valve, so that a change area presented by a liquid phase of the industrial material is completely in a field detection range of the intelligent sight glass;
starting materials in the reaction kettle to carry out layering operation, enabling the materials to flow through the sight glass at the moment, enabling the intelligent sight glass to form a specific light path space through a special optical system to enhance the imaging effect of a liquid phase, and enabling a liquid level meter in the intelligent sight glass to sample the materials in real time, wherein external light pollution is avoided side by side;
B. the liquid level meter detects a liquid phase steady state response value of an acquired image, calculates a steady state response value corresponding to a calibration detection range of the liquid phase through a specially designed image processing operation method, wherein the range of the steady state response value is between 0 and 1000, and then converts the corresponding steady state response value into a corresponding current loop value, and the current loop value is 4-20mA continuous response;
C. the obtained current loop value is subjected to real-time data stream output through network digital, intelligent instrument digital or traditional instrument analog signals, and is accessed to an industrial automation DCS;
D. when the materials detected in the sight glass are mixed phases, the liquid level meter converts the detected steady-state response value of the mixed phases into a corresponding current loop value, and transmits a data stream to the industrial automation DCS through any one output mode in the step C;
E. and when the material detected in the sight glass is an organic phase or an inorganic phase, the liquid level meter converts the detected steady-state response value of the organic phase or the inorganic phase into a corresponding current loop value, and transmits the data stream to the industrial automation DCS through any one output mode in the step C.
E. And D, when the material detected in the sight glass is in a null phase, detecting the material as a fixed value by the liquid level meter, namely finishing layering, and transmitting the data stream to the industrial automation DCS by the liquid level meter through any one output mode in the step C according to the fixed value.
Preferably, the network outputs digital data, the RTSP video stream is output in a TCP/IP mode, and the response data is output in a UDP mode.
Preferably, the digital output of the intelligent instrument is an RS485 standard industrial signal output.
Preferably, the analog signal output of the traditional instrument is a 4-20mA signal output.
Compared with the prior art, the invention has the beneficial effects that: the intelligent sight glass replaces manual operation through the detection method, the liquid phase is detected in real time through standard data operation, an organic phase, an inorganic phase and a mixed phase in the liquid separation process can be sensitively detected, bubbles can be effectively detected, suspended matters and empty phases can be effectively detected, the interference factors are sensitively detected, the liquid separation process is more accurate and reliable, the purpose of 0 error is achieved, unnecessary waste caused when the materials are subjected to layering operation is greatly reduced, the process consistency is guaranteed through intelligent operation, and production flow informatization construction is promoted.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a liquid phase detection method of an intelligent sight glass is characterized in that: the method comprises the following steps:
A. installing the intelligent sight glass at a corresponding position between the reaction kettle and the automatic control valve, so that a change area presented by a liquid phase of the industrial material is completely in a field detection range of the intelligent sight glass;
starting materials in the reaction kettle to carry out layering operation, enabling the materials to flow through the sight glass at the moment, enabling the intelligent sight glass to form a specific light path space through a special optical system of the sight glass to enhance the imaging effect of the liquid phase, and enabling a liquid level meter in the intelligent sight glass to sample the liquid phase of the materials in real time, wherein external light pollution is avoided side by side;
B. the liquid level meter detects a liquid phase steady state response value of an acquired image, calculates a steady state response value corresponding to a calibration detection range of the liquid phase through a specially designed image processing operation method, wherein the range of the steady state response value is between 0 and 1000, and then converts the corresponding steady state response value into a corresponding current loop value, and the current loop value is 4-20mA continuous response;
C. the obtained current loop value is subjected to real-time data stream output through network digital, intelligent instrument digital or traditional instrument analog signals, and is accessed to an industrial automation DCS;
D. when the materials detected in the sight glass are mixed phases, the liquid level meter converts the detected steady-state response value of the mixed phases into a corresponding current loop value, and transmits a data stream to the industrial automation DCS through any one output mode in the step C;
E. and when the material detected in the sight glass is an organic phase or an inorganic phase, the liquid level meter converts the detected steady-state response value of the organic phase or the inorganic phase into a corresponding current loop value, and transmits the data stream to the industrial automation DCS through any one output mode in the step C.
F. And D, when the material detected in the sight glass is in a null phase, detecting the material as a fixed value by the liquid level meter, namely finishing layering, and transmitting the data stream to the industrial automation DCS by the liquid level meter through any one output mode in the step C according to the fixed value.
In the invention, network digital output outputs RTSP video stream in a TCP/IP mode and outputs response data in a UDP mode; the digital output of the intelligent instrument is RS485 standard industrial signal output;
the analog signal output of the traditional instrument is 4-20mA signal output.
In this embodiment:
when oil and water are layered, an organic phase is clean in the stage before material discharging, the response value is high when bubbles are few, the steady-state response value of the material discharging process is gradually reduced from more than 800 to about 200 under the condition that an organic phase valve is fully opened, the image is collected and data is calculated through a liquid level meter, the data flow is transmitted to an industrial automation DCS, the corresponding valve is controlled through the liquid level meter, the steady-state response value is gradually reduced to about 200 when the organic phase is gradually discharged, the response value is obviously reduced when the organic phase is close to a mixed phase, and the mixed phase enters a mixed phase; the steady state response value of the mixed phase is very low, the typical value is between 50 and 60, the duration of the mixed phase is short and is less than 20S approximately, the liquid level meter collects images and calculates data, the data flow is transmitted to an industrial automation DCS system, and a corresponding valve is controlled; and (3) closing the valve in an inorganic phase, and then, calculating the typical value by 300-400, acquiring images and calculating data by the liquid level meter, transmitting the data stream to an industrial automation DCS (distributed control system), and controlling the corresponding valve to keep the process consistent all the time.
According to the invention, the intelligent sight glass is arranged at the corresponding position between the reaction kettle and the automatic control valve, so that the change area presented by the liquid phase of the industrial material is completely in the field detection range of the intelligent sight glass; adding materials into a reaction kettle for reaction, wherein the reaction time length of the materials in the reaction kettle is controlled by an industrial automation DCS system, and when the reaction time length is up, the layering operation is carried out; after the layered operation of materials in the reaction kettle is started, the automatic control valve at the bottom of the reaction kettle and the automatic control valve of the inorganic phase or the organic phase are opened through the industrial automatic DCS system, the materials flow through the sight glass at the moment, the liquid level meter in the intelligent sight glass samples the materials in real time, the obtained images are subjected to special operation and processing, a standard industrial signal is output in real time, and the signal is fed back to the industrial automatic DCS system, so that the automatic control valve at the bottom of the reaction kettle and the automatic control valve of the inorganic phase or the organic phase are adjusted to be opened or closed.
In conclusion, the detection method replaces manual operation, the liquid phase is detected in real time through standard data operation, the purpose of 0 error is achieved, unnecessary waste caused by layering operation of materials is greatly reduced, the process consistency is guaranteed through intelligent operation, and production flow informatization construction is promoted.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A liquid phase detection method of an intelligent sight glass is characterized in that: the method comprises the following steps:
A. installing the intelligent sight glass at a corresponding position between the reaction kettle and the automatic control valve, so that a change area presented by a liquid phase of the industrial material is completely in a field detection range of the intelligent sight glass;
starting materials in the reaction kettle to carry out layering operation, enabling the materials to flow through the sight glass at the moment, enabling the intelligent sight glass to form a specific light path space through a special optical system to enhance the imaging effect of a liquid phase, and enabling a liquid level meter in the intelligent sight glass to sample the materials in real time, wherein external light pollution is avoided side by side;
B. the liquid level meter detects a liquid phase steady state response value of an acquired image, calculates a steady state response value corresponding to a calibration detection range of the liquid phase through a specially designed image processing operation method, wherein the range of the steady state response value is between 0 and 1000, and then converts the corresponding steady state response value into a corresponding current loop value, and the current loop value is 4-20mA continuous response;
C. the obtained current loop value is subjected to real-time data stream output through network digital, intelligent instrument digital or traditional instrument analog signals, and is accessed to an industrial automation DCS;
D. when the materials detected in the sight glass are mixed phases, the liquid level meter converts the detected steady-state response value of the mixed phases into a corresponding current loop value, and transmits a data stream to the industrial automation DCS through any one output mode in the step C;
E. when the material detected in the sight glass is an organic phase or an inorganic phase, the liquid level meter can convert the detected steady-state response value of the organic phase or the inorganic phase into a corresponding current loop value, and then the obtained current loop value transmits a data stream to the industrial automation DCS through any one output mode in the step C;
F. and D, when the material detected in the mirror is in a null phase, detecting the material as a fixed value by the liquid level meter, namely finishing layering, and transmitting the data stream to the industrial automation DCS by the liquid level meter through any one output mode in the step C according to the fixed value.
2. The liquid phase detection method of the intelligent sight glass according to claim 1, wherein the liquid phase detection method comprises the following steps: and (4) network digital output, namely outputting the RTSP video stream in a TCP/IP mode and outputting the response data in a UDP mode.
3. The liquid phase detection method of the intelligent sight glass according to claim 1, wherein the liquid phase detection method comprises the following steps: the digital output of the intelligent instrument is RS485 standard industrial signal output.
4. The liquid phase detection method of the intelligent sight glass according to claim 1, wherein the liquid phase detection method comprises the following steps: the analog signal output of the traditional instrument is 4-20mA signal output.
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| CN202010651808.1A CN111721377A (en) | 2020-07-08 | 2020-07-08 | Liquid phase detection method of intelligent sight glass |
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| CN202010651808.1A CN111721377A (en) | 2020-07-08 | 2020-07-08 | Liquid phase detection method of intelligent sight glass |
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| CN109781207A (en) * | 2019-01-15 | 2019-05-21 | 江苏东方赛光电有限公司 | A kind of level monitoring system based on IPC technology |
| US20190151599A1 (en) * | 2017-11-21 | 2019-05-23 | General Electric Company | System and Method for Monitoring Anesthetic Agent Fill Level |
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2020
- 2020-07-08 CN CN202010651808.1A patent/CN111721377A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20170342812A1 (en) * | 2016-05-26 | 2017-11-30 | Leroy Thomas Kuhn | Method and Apparatus for Separating and Measuring Multiphase Immiscible Fluid Mixtures |
| CN206095961U (en) * | 2016-10-25 | 2017-04-12 | 许静 | Fluid medium automatic identification equipment |
| CN207203507U (en) * | 2017-09-14 | 2018-04-10 | 大名县名鼎化工有限责任公司 | Alkanisation distillation still automatic back flow water replanishing device |
| US20190151599A1 (en) * | 2017-11-21 | 2019-05-23 | General Electric Company | System and Method for Monitoring Anesthetic Agent Fill Level |
| CN109612550A (en) * | 2019-01-15 | 2019-04-12 | 江苏东方赛光电有限公司 | A kind of novel intelligent fluid level measuring instrument based on machine vision |
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