CN112798758A - Intelligent checking and maintaining system and method for online chemical instrument - Google Patents
Intelligent checking and maintaining system and method for online chemical instrument Download PDFInfo
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- CN112798758A CN112798758A CN202110280750.9A CN202110280750A CN112798758A CN 112798758 A CN112798758 A CN 112798758A CN 202110280750 A CN202110280750 A CN 202110280750A CN 112798758 A CN112798758 A CN 112798758A
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Abstract
The invention discloses an on-line chemical instrument intelligent checking and maintaining system and a method, which comprises a standard instrument, a chemical instrument to be checked and maintained, a data acquisition system, a control system, a standard solution source system and a plurality of water sample pipelines, wherein each water sample pipeline is communicated with the standard instrument and the chemical instrument to be checked and maintained, the standard solution source system is communicated with the standard instrument and the chemical instrument to be checked and maintained, the output end of the standard instrument and the output end of the chemical instrument to be checked and maintained are connected with the input end of the data acquisition system, the output end of the data acquisition system is connected with the input end of the control system, the output end of the control system is connected with the control end of the chemical instrument to be checked and maintained, and the system and the method automatically complete the checking and maintaining of the on.
Description
Technical Field
The invention belongs to the field of daily maintenance of on-line chemical instruments of power plants, and relates to an intelligent checking and maintaining system and method for on-line chemical instruments.
Background
The water vapor is an important working medium for the operation of various thermal equipment in a power plant, and is continuously and accurately monitored by an on-line chemical instrument and controlled within the range of standard requirements so as to achieve the purpose of preventing the corrosion, scaling and salt accumulation of the thermal equipment, otherwise, safety accidents such as boiler pipe explosion, turbine salt accumulation and corrosion occur, and therefore, the routine checking and maintenance of the on-line chemical instrument is an important work for operators. At present, daily calibration of an online chemical instrument mainly depends on manual work, time and labor are wasted, a calibration procedure is complex, the automation degree is low, the accuracy is difficult to guarantee, and the main problems of the prior online chemical instrument are as follows:
1) the on-line chemical instrument measuring sensor is taken out of the measuring loop, the measuring accuracy of the on-line chemical instrument is tested by adopting a standard solution off-line, time and labor are wasted, and the influence of a pure water factor and an on-line factor is eliminated, so that the accuracy of the on-line chemical instrument which is verified by using the standard solution manually off-line cannot be ensured during on-line measurement. In addition, during calibration, the on-line chemical instrument needs to be stopped, water quality cannot be monitored during the calibration, a water quality supervision blind area exists, and once the water quality exceeds the standard, the operation safety of equipment is seriously influenced.
2) The measurement error of the on-line chemical instrument needs to be calculated manually, the error source needs to be judged manually when the calculated error exceeds the standard, the standard solution can be prepared after the defect elimination treatment, the on-line chemical instrument is calibrated in a manual mode, the automation degree is low, and the work efficiency of the instrument maintainers is seriously influenced.
At present, no intelligent verification and maintenance system and method for the online chemical instrument, which can realize automatic inspection, error calculation and analysis, error source check and automatic calibration without manual intervention, are available at home and abroad, and the problem needs to be solved urgently.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an intelligent verification and maintenance system and method for an online chemical instrument.
In order to achieve the purpose, the on-line intelligent calibration and maintenance system for the chemical instrument comprises a standard instrument, a chemical instrument to be calibrated and maintained, a data acquisition system, a control system, a standard solution source system and a plurality of water sample pipelines, wherein each water sample pipeline is communicated with the standard instrument and the chemical instrument to be calibrated and maintained, the standard solution source system is communicated with the standard instrument and the chemical instrument to be calibrated and maintained, the output end of the standard instrument and the output end of the chemical instrument to be calibrated and maintained are connected with the input end of the data acquisition system, the output end of the data acquisition system is connected with the input end of the control system, and the output end of the control system is connected with the control end of the chemical instrument to be calibrated and maintained.
The multi-channel switching sampling system is characterized by further comprising a multi-channel switching sampling system, wherein each water sample pipeline is communicated with an inlet of the multi-channel switching sampling system, an outlet of the multi-channel switching sampling system is communicated with an inlet of the standard instrument, and a control end of the multi-channel switching sampling system is connected with an output end of the control system.
The outlet of the multi-channel switching sample introduction system is communicated with the inlet of the standard instrument through a communicating pipeline.
The standard solution source system comprises a standard solution source and a standard solution adding pump, wherein the standard solution source is communicated with an inlet of the standard instrument through the standard solution adding pump.
The standard instrument is a standard online conductivity meter, a standard online hydrogen conductivity meter, a standard online degassing hydrogen conductivity meter, a standard online pH meter, a standard online dissolved oxygen meter, a standard online sodium meter, a standard online silicon meter, a standard online phosphate meter, a standard online chlorine meter or a standard online sulfate meter.
The chemical meter to be verified and maintained is an online conductivity meter, an online hydrogen conductivity meter, an online degassing hydrogen conductivity meter, an online pH meter, an online dissolved oxygen meter, an online sodium meter, an online silicon meter, an online phosphate meter, an online chlorine meter or an online sulfate meter.
The type of the maintenance chemical meter to be verified is the same as that of the standard meter.
An intelligent checking and maintaining method for an online chemical instrument comprises the following steps:
the method comprises the following steps that water samples in the same water sample pipeline are respectively sent into a standard instrument and a chemical instrument to be verified and maintained for detection, data detected by the standard instrument and data detected by the chemical instrument to be verified and maintained are sent into a control system through a data acquisition system, and when the difference between the data detected by the standard instrument and the data detected by the chemical instrument to be verified and maintained is larger than or equal to a preset value, the chemical instrument to be verified and maintained is diagnosed and deleted; when the difference between the data detected by the standard instrument and the data detected by the chemical instrument to be verified and maintained is smaller than the preset value, the standard solution source system is controlled to output the standard solution and send the standard solution into the standard instrument and the chemical instrument to be verified and maintained, the data detected by the standard instrument and the data detected by the chemical instrument to be verified and maintained are sent into the control system through the data acquisition system, and the control system automatically calibrates the chemical instrument to be verified and maintained according to the data detected by the standard instrument.
The invention has the following beneficial effects:
the invention relates to an intelligent checking and maintaining system and a method for an on-line chemical instrument, which are characterized in that when in specific operation, the same water sample is respectively sent into a standard instrument and a to-be-checked and maintained chemical instrument, when the difference between the data detected by the standard instrument and the data detected by the to-be-checked and maintained chemical instrument is more than or equal to a preset value, the to-be-checked and maintained chemical instrument is diagnosed and deleted, when in checking, the same standard solution is respectively sent into the standard instrument and the to-be-checked and maintained chemical instrument, the to-be-checked and maintained chemical instrument is automatically calibrated according to the data detected by the standard instrument, so as to solve the existing problems of the on-line chemical instrument checking and maintaining, avoid the possibility of artificially tampering instrument measuring errors, realize the operation and maintenance of the on-line chemical instrument, improve the measuring accuracy of the on-line, can be widely applied to the chemical industry, the pharmaceutical industry, the food industry and the municipal industry.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a multi-channel switching sample introduction system, 2 is a standard instrument, 3 is an online chemical instrument to be verified and maintained, 4 is a data acquisition system, 5 is a control system, 6 is a standard solution adding pump, and 7 is a standard solution source.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the online intelligent calibration and maintenance system for chemical instruments comprises a standard instrument 2, a chemical instrument 3 to be calibrated and maintained, a data acquisition system 4, a control system 5, a standard solution source system and a plurality of water sample pipelines, wherein each water sample pipeline is communicated with the standard instrument 2 and the chemical instrument 3 to be calibrated and maintained, the standard solution source system is communicated with the standard instrument 2 and the chemical instrument 3 to be calibrated and maintained, the output end of the standard instrument 2 and the output end of the chemical instrument 3 to be calibrated and maintained are connected with the input end of the data acquisition system 4, the output end of the data acquisition system 4 is connected with the input end of the control system 5, and the output end of the control system 5 is connected with the control end of the chemical instrument 3 to be calibrated and maintained.
The multi-channel switching sampling system also comprises a multi-channel switching sampling system 1, wherein each water sample pipeline is respectively communicated with an inlet of the multi-channel switching sampling system 1, an outlet of the multi-channel switching sampling system 1 is communicated with an inlet of a standard instrument 2, a control end of the multi-channel switching sampling system 1 is connected with an output end of a control system 5, and particularly, an outlet of the multi-channel switching sampling system 1 is communicated with an inlet of the standard instrument 2 through a communication pipeline.
The standard solution source system comprises a standard solution source 7 and a standard solution adding pump 6, wherein the standard solution source 7 is communicated with the inlet of the standard instrument 2 through the standard solution adding pump 6.
The standard instrument 2 is a standard online conductivity meter, a standard online hydrogen conductivity meter, a standard online degassing hydrogen conductivity meter, a standard online pH meter, a standard online dissolved oxygen meter, a standard online sodium meter, a standard online silicon meter, a standard online phosphate meter, a standard online chlorine meter or a standard online sulfate meter; the chemical meter 3 to be verified and maintained is an online conductivity meter, an online hydrogen conductivity meter, an online degassing hydrogen conductivity meter, an online pH meter, an online dissolved oxygen meter, an online sodium meter, an online silicon meter, an online phosphate meter, an online chlorine meter or an online sulfate meter.
The service chemical meter 3 to be verified is of the same type as the standard meter 2.
The intelligent checking and maintaining method for the online chemical instrument comprises the following steps of:
the water samples in the same water sample pipeline are respectively sent into a standard instrument 2 and a to-be-verified maintenance chemical instrument 3 for detection, data detected by the standard instrument 2 and data detected by the to-be-verified maintenance chemical instrument 3 are sent into a control system 5 through a data acquisition system 4, and when the difference between the data detected by the standard instrument 2 and the data detected by the to-be-verified maintenance chemical instrument 3 is greater than or equal to a preset value, the to-be-verified maintenance chemical instrument 3 is diagnosed and eliminated; when the difference between the data detected by the standard instrument 2 and the data detected by the chemical instrument 3 to be verified and maintained is smaller than the preset value, the standard solution source system is controlled to output the standard solution and send the standard solution into the standard instrument 2 and the chemical instrument 3 to be verified and maintained, the data detected by the standard instrument 2 and the data detected by the chemical instrument 3 to be verified and maintained are sent into the control system 5 through the data acquisition system 4, and the control system 5 automatically calibrates the chemical instrument 3 to be verified and maintained according to the data detected by the standard instrument 2.
The invention realizes the on-line chemical instrument without manual intervention, can realize intelligent check maintenance of automatic on-line inspection, error calculation and analysis, error diagnosis and defect elimination and automatic calibration, achieves the intelligent operation of the chemical instrument, can be widely applied to the water quality monitoring and supervision fields of various industries such as electric power, chemical industry, medicine and the like, and greatly improves the measurement accuracy of the on-line chemical instrument and the working efficiency of workers.
Claims (8)
1. The utility model provides an online chemical instrumentation wisdom check-up maintenance system, a serial communication port, including standard instrument (2), chemical instrument (3) are maintained to waiting to check-up, data acquisition system (4), control system (5), standard solution source system and a plurality of water sample pipeline, wherein, each water sample pipeline all is linked together with standard instrument (2) and chemical instrument (3) are maintained to waiting to check-up, standard solution source system is linked together with standard instrument (2) and chemical instrument (3) are maintained to waiting to check-up, the output of standard instrument (2) and the output of waiting to check-up maintenance chemical instrument (3) are connected with the input of data acquisition system (4), the output of data acquisition system (4) is connected with the input of control system (5), the output of control system (5) is connected with the control end of waiting to check-up maintenance chemical instrument (3).
2. The on-line intelligent calibration and maintenance system for the chemical instruments according to claim 1, further comprising a multi-channel switching sample injection system (1), wherein each water sample pipeline is respectively communicated with an inlet of the multi-channel switching sample injection system (1), an outlet of the multi-channel switching sample injection system (1) is communicated with an inlet of the standard instrument (2), and a control end of the multi-channel switching sample injection system (1) is connected with an output end of the control system (5).
3. The system for intelligently verifying and maintaining the on-line chemical instrument as claimed in claim 2, wherein the outlet of the multi-channel switching sample injection system (1) is communicated with the inlet of the standard instrument (2) through a communication pipeline.
4. The on-line chemical instrument intelligent calibration maintenance system according to claim 1, wherein the standard solution source system comprises a standard solution source (7) and a standard solution adding pump (6), wherein the standard solution source (7) is communicated with the inlet of the standard instrument (2) through the standard solution adding pump (6).
5. The online chemical meter intelligent calibration maintenance system according to claim 1, wherein the standard meter (2) is a standard online conductivity meter, a standard online hydrogen conductivity meter, a standard online degassed hydrogen conductivity meter, a standard online pH meter, a standard online dissolved oxygen meter, a standard online sodium meter, a standard online silicon meter, a standard online phosphate meter, a standard online chlorine meter or a standard online sulfate meter.
6. The online chemical meter intelligent calibration maintenance system according to claim 1, wherein the chemical meter (3) to be calibrated is an online conductivity meter, an online hydrogen conductivity meter, an online degassing hydrogen conductivity meter, an online pH meter, an online dissolved oxygen meter, an online sodium meter, an online silicon meter, an online phosphate meter, an online chlorine meter or an online sulfate meter.
7. The on-line chemical meter intelligent calibration maintenance system according to claim 1, wherein the chemical meter (3) to be calibrated and maintained is of the same type as the standard meter (2).
8. An online chemical instrument intelligent calibration maintenance method, based on the online chemical instrument intelligent calibration maintenance system of claim 1, comprising the following steps:
water samples in the same water sample pipeline are respectively sent into a standard instrument (2) and a chemical instrument (3) to be verified and maintained for detection, data detected by the standard instrument (2) and data detected by the chemical instrument (3) to be verified and maintained are sent into a control system (5) through a data acquisition system (4), and when the difference between the data detected by the standard instrument (2) and the data detected by the chemical instrument (3) to be verified and maintained is larger than or equal to a preset value, the chemical instrument (3) to be verified and maintained is diagnosed and deleted; when the difference between the data detected by the standard instrument (2) and the data detected by the chemical instrument (3) to be verified and maintained is smaller than a preset value, the standard solution source system is controlled to output a standard solution and send the standard solution into the standard instrument (2) and the chemical instrument (3) to be verified and maintained, the data detected by the standard instrument (2) and the data detected by the chemical instrument (3) to be verified and maintained are sent into the control system (5) through the data acquisition system (4), and the control system (5) automatically calibrates the chemical instrument (3) to be verified and maintained according to the data detected by the standard instrument (2).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110280750.9A CN112798758A (en) | 2021-03-16 | 2021-03-16 | Intelligent checking and maintaining system and method for online chemical instrument |
| PCT/CN2021/115554 WO2022193562A1 (en) | 2021-03-16 | 2021-08-31 | Intelligent verification and maintenance system and method for online chemical instruments |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110280750.9A CN112798758A (en) | 2021-03-16 | 2021-03-16 | Intelligent checking and maintaining system and method for online chemical instrument |
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| CN112798758A true CN112798758A (en) | 2021-05-14 |
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| CN202110280750.9A Pending CN112798758A (en) | 2021-03-16 | 2021-03-16 | Intelligent checking and maintaining system and method for online chemical instrument |
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| WO (1) | WO2022193562A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776571A (en) * | 2021-07-30 | 2021-12-10 | 华电电力科学研究院有限公司 | Online calibration method for thermal monitoring instrument of power plant |
| WO2022193562A1 (en) * | 2021-03-16 | 2022-09-22 | 西安热工研究院有限公司 | Intelligent verification and maintenance system and method for online chemical instruments |
| CN115420789A (en) * | 2022-08-29 | 2022-12-02 | 大唐秦岭发电有限公司 | Power plant low-conductivity water pH electrode failure detection system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807000A (en) * | 2016-03-17 | 2016-07-27 | 山东电力研究院 | Online chemical instrument standard calibration device and method |
| CN107064223A (en) * | 2017-06-27 | 2017-08-18 | 中国大唐集团科学技术研究院有限公司华东分公司 | One kind uses the on-line measurement of Intelligent micro dissolved oxygen analytic instrument and calibration system and method |
| CN108593864A (en) * | 2018-03-30 | 2018-09-28 | 山西省计量科学研究院 | Remote calibration device for water quality on-line detector |
| CN110208328A (en) * | 2019-06-10 | 2019-09-06 | 西安热工研究院有限公司 | A kind of Test of accuracy system and method for the online pH table of power plant water-steam system |
| CN214473276U (en) * | 2021-03-16 | 2021-10-22 | 西安热工研究院有限公司 | Intelligent checking and maintaining system for online chemical instrument |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201035099Y (en) * | 2007-04-13 | 2008-03-12 | 西安热工研究院有限公司 | Mobile on-line electric conductivity measuring instrument testing device |
| CN201034966Y (en) * | 2007-04-13 | 2008-03-12 | 西安热工研究院有限公司 | Testing device of mobile on-line pH measuring instrument |
| US20150226597A1 (en) * | 2014-02-12 | 2015-08-13 | Ms. Jennifer Claire Rundle | Method, System and Apparatus for Convenience and Compliance with Environmental Protection Regulations and Occupational Safety Standards during On-Site Fluid Flow Meter Calibration and Verification Procedures |
| CN108919165A (en) * | 2018-06-29 | 2018-11-30 | 中国大唐集团科学技术研究院有限公司华中分公司 | The portable online conductivity table electrode constant verifying attachment of one kind and the method for inspection |
| CN211014189U (en) * | 2019-10-10 | 2020-07-14 | 中国大唐集团科学技术研究院有限公司华东电力试验研究院 | Online calibrating device of thermal power plant's sodium meter |
| CN112798758A (en) * | 2021-03-16 | 2021-05-14 | 西安热工研究院有限公司 | Intelligent checking and maintaining system and method for online chemical instrument |
| CN112881639A (en) * | 2021-03-16 | 2021-06-01 | 西安热工研究院有限公司 | On-site on-line intelligent testing and calibrating system for chemical instrument |
-
2021
- 2021-03-16 CN CN202110280750.9A patent/CN112798758A/en active Pending
- 2021-08-31 WO PCT/CN2021/115554 patent/WO2022193562A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807000A (en) * | 2016-03-17 | 2016-07-27 | 山东电力研究院 | Online chemical instrument standard calibration device and method |
| CN107064223A (en) * | 2017-06-27 | 2017-08-18 | 中国大唐集团科学技术研究院有限公司华东分公司 | One kind uses the on-line measurement of Intelligent micro dissolved oxygen analytic instrument and calibration system and method |
| CN108593864A (en) * | 2018-03-30 | 2018-09-28 | 山西省计量科学研究院 | Remote calibration device for water quality on-line detector |
| CN110208328A (en) * | 2019-06-10 | 2019-09-06 | 西安热工研究院有限公司 | A kind of Test of accuracy system and method for the online pH table of power plant water-steam system |
| CN214473276U (en) * | 2021-03-16 | 2021-10-22 | 西安热工研究院有限公司 | Intelligent checking and maintaining system for online chemical instrument |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022193562A1 (en) * | 2021-03-16 | 2022-09-22 | 西安热工研究院有限公司 | Intelligent verification and maintenance system and method for online chemical instruments |
| CN113776571A (en) * | 2021-07-30 | 2021-12-10 | 华电电力科学研究院有限公司 | Online calibration method for thermal monitoring instrument of power plant |
| CN113776571B (en) * | 2021-07-30 | 2023-06-27 | 华电电力科学研究院有限公司 | Online calibration method for thermal monitoring instrument of power plant |
| CN115420789A (en) * | 2022-08-29 | 2022-12-02 | 大唐秦岭发电有限公司 | Power plant low-conductivity water pH electrode failure detection system and method |
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| WO2022193562A1 (en) | 2022-09-22 |
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