CN204287158U - Exhaust process monitoring SO2 concentration data validity appraises and decides device - Google Patents
Exhaust process monitoring SO2 concentration data validity appraises and decides device Download PDFInfo
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- CN204287158U CN204287158U CN201420842650.6U CN201420842650U CN204287158U CN 204287158 U CN204287158 U CN 204287158U CN 201420842650 U CN201420842650 U CN 201420842650U CN 204287158 U CN204287158 U CN 204287158U
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Abstract
The utility model discloses a kind of exhaust process monitoring SO2 concentration data validity and appraise and decide device, include central processing unit, described central processing unit signal is connected with signal isolation circuit, RS232 interface and Memory Extension circuit, described signal isolation circuit is connected with analog quantity acquisition circuit, and described analog quantity acquisition circuit is connected with PH metering circuit; By identifying the discharge of SO2 to the detection of dynamic of pH value, reach the accuracy of guaranteeing data and moment checkout equipment, reduce the object of maintenance cost.
Description
Technical field
The utility model is specifically related to exhaust process monitoring SO2 concentration data validity and appraises and decides device.
Background technology
Traditional CEMS on-line monitoring system is arranged on Waste gas outlet, carries out Real-Time Monitoring to pollutant levels such as the SO2 in toxic emission, NOX, flue dust.But how to know that whether SO2 concentration data is correct, whether SO2 online analytical instrument is working properly, interference from human factor is had to affect the measurement of SO2? as environmental administration, if determine that these situations need on-site verification, but this also needs the SO2 analyser of different manufacturers very familiar.How therefore a kind of simple device be provided, do not need site inspection just energy problem identificatioin, thus toxic emission enterprise is effectively supervised, just become an important process of environmental protection supervision.
Utility model content
For solving the problems of the technologies described above, the utility model proposes exhaust process monitoring SO2 concentration data validity and appraising and deciding device, to reach the accuracy of guaranteeing data and moment checkout equipment, to reduce the object of maintenance cost.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of exhaust process monitoring SO2 concentration data validity appraises and decides device, include central processing unit, described central processing unit signal is connected with signal isolation circuit, RS232 interface and Memory Extension circuit, described signal isolation circuit is connected with analog quantity acquisition circuit, and described analog quantity acquisition circuit is connected with PH metering circuit.
As preferably, described RS232 interface is connected with exhaust process supervisory system.
As preferably, described central processing unit is also connected with display interface and keystroke interface.
As preferably, described PH metering circuit is connected with operational amplifier and measures power supply.
As preferably, also include system power supply circuit, described system power supply circuit and described central processing unit, signal isolation circuit realize driving.
By technique scheme, the utility model, by identifying the discharge of SO2 to the detection of dynamic of pH value, reaches the accuracy of guaranteeing data and moment checkout equipment, reduces the object of maintenance cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below.
Fig. 1 appraises and decides the schematic flow sheet of device for the exhaust process monitoring SO2 concentration data validity disclosed in the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.
The utility model provides exhaust process monitoring SO2 concentration data validity and appraises and decides device, and its principle of work is the discharge by identifying SO2 to the detection of dynamic of pH value, reaches the accuracy of guaranteeing data and moment checkout equipment, reduces the object of maintenance cost.
Below in conjunction with embodiment and embodiment, the utility model is described in further detail.
As shown in Figure 1, a kind of exhaust process monitoring SO2 concentration data validity appraises and decides device, it is characterized in that, include central processing unit, described central processing unit signal is connected with signal isolation circuit, RS232 interface and Memory Extension circuit, described signal isolation circuit is connected with analog quantity acquisition circuit, and described analog quantity acquisition circuit is connected with PH metering circuit.Described RS232 interface is connected with exhaust process supervisory system, and described central processing unit is also connected with display interface and keystroke interface, and described PH metering circuit is connected with operational amplifier and measures power supply.In addition this device also includes system power supply circuit, and described system power supply circuit and described central processing unit, signal isolation circuit realize driving.
Concrete use step of the present utility model is as follows: more as shown in Figure 1, the electrode signal of PH sensor is connected to the PH metering circuit appraising and deciding device, PH metering circuit forms primarily of charge amplifier, signal is amplified to the simulating signal that energy is measured, analog quantity acquisition circuit adopts 12 of SPI interface to be AD conversion integrated circuit, the SPI interface of integrated circuit, by photosignal buffer circuit, directly carries out data transmission with central processing unit.So not only completed data acquisition but also achieved Phototube Coupling, ensure that the stability of whole system work.The AD signal gathered is converted to pH value by calculating.PH value fluctuates between 5.0-5.9 under normal circumstances, if pH value is for a long time lower than 5.0 or near 5.0, so illustrate that the SO2 value in desulfurization island is higher, then the SO2 value of Waste gas outlet also should be higher; If contrary pH value is higher, near 5.9 or higher than 5.9, then the SO2 value in desulfurization island is lower, and the SO2 of Waste gas outlet also should be lower, and at this moment enterprise suitably can reduce the input of lime stone.
Central processing unit gathers 1 pH value p.s., within 5 minutes, gathers 300, is averaged by these 300 pH values as the average of 5 minutes.PH mean value and the Waste gas outlet SO2 value of 5 minutes of 5 minutes compare, and see whether data meet, if met, can judge that outlet on-line monitoring equipment is working properly, if do not met, can judge that the work of on-line monitoring equipment is abnormal.Monitoring result sends exhaust process supervisory system to by RS232 interface.
By above mode, exhaust process monitoring SO2 concentration data validity provided by the utility model appraises and decides device, by identifying the discharge of SO2 to the detection of dynamic of pH value, reach the accuracy of guaranteeing data and moment checkout equipment, reduce the object of maintenance cost.
The above-described preferred implementation being only exhaust process disclosed in the utility model monitoring SO2 concentration data validity and appraising and deciding device; should be understood that; for the person of ordinary skill of the art; under the prerequisite not departing from the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (5)
1. an exhaust process monitoring SO2 concentration data validity appraises and decides device, it is characterized in that, include central processing unit, described central processing unit signal is connected with signal isolation circuit, RS232 interface and Memory Extension circuit, described signal isolation circuit is connected with analog quantity acquisition circuit, and described analog quantity acquisition circuit is connected with PH metering circuit.
2. exhaust process monitoring SO2 concentration data validity according to claim 1 appraises and decides device, and it is characterized in that, described RS232 interface is connected with exhaust process supervisory system.
3. exhaust process monitoring SO2 concentration data validity according to claim 1 appraises and decides device, and it is characterized in that, described central processing unit is also connected with display interface and keystroke interface.
4. exhaust process monitoring SO2 concentration data validity according to claim 1 appraises and decides device, and it is characterized in that, described PH metering circuit is connected with operational amplifier and measures power supply.
5. exhaust process monitoring SO2 concentration data validity according to claim 1 appraises and decides device, and it is characterized in that, also include system power supply circuit, described system power supply circuit and described central processing unit, signal isolation circuit realize driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420842650.6U CN204287158U (en) | 2014-12-26 | 2014-12-26 | Exhaust process monitoring SO2 concentration data validity appraises and decides device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420842650.6U CN204287158U (en) | 2014-12-26 | 2014-12-26 | Exhaust process monitoring SO2 concentration data validity appraises and decides device |
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| CN204287158U true CN204287158U (en) | 2015-04-22 |
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| CN201420842650.6U Active CN204287158U (en) | 2014-12-26 | 2014-12-26 | Exhaust process monitoring SO2 concentration data validity appraises and decides device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510538A (en) * | 2015-12-31 | 2016-04-20 | 聚光科技(杭州)股份有限公司 | Remote quality control device and method of gas monitoring system |
| CN110849412A (en) * | 2019-10-15 | 2020-02-28 | 卡川尔流体科技(上海)有限公司 | Equipment capable of independently and accurately measuring temperature, PH and EC |
-
2014
- 2014-12-26 CN CN201420842650.6U patent/CN204287158U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510538A (en) * | 2015-12-31 | 2016-04-20 | 聚光科技(杭州)股份有限公司 | Remote quality control device and method of gas monitoring system |
| CN110849412A (en) * | 2019-10-15 | 2020-02-28 | 卡川尔流体科技(上海)有限公司 | Equipment capable of independently and accurately measuring temperature, PH and EC |
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