CN205940635U - Multipoint mode ammonia escape on -line monitoring system - Google Patents
Multipoint mode ammonia escape on -line monitoring system Download PDFInfo
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- CN205940635U CN205940635U CN201620893462.5U CN201620893462U CN205940635U CN 205940635 U CN205940635 U CN 205940635U CN 201620893462 U CN201620893462 U CN 201620893462U CN 205940635 U CN205940635 U CN 205940635U
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- ammonia
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Abstract
The utility model discloses a multipoint mode ammonia escape on -line monitoring system, including monitoring host computer, data acquisition device and ammonia escape detector, monitoring host computer passes through the data acquisition device and connects ammonia escape detector, flow sensor, moisture sensor, temperature sensor, NOx sensor and pressure sensor, monitoring host computer connects the display screen, and monitoring host computer passes through wireless communication module and connect mobile terminal, ammonia escape detector, flow sensor, moisture sensor, temperature sensor, NOx sensor and pressure sensor all insert the flue, the utility model discloses the deNOx systems's of real -time supervision thermal power plant ammonia escape concentration detects flue gas NOx, temperature, pressure, flow, moisture and unit load isoparametric simultaneously, according to real time monitoring's data, ensures that thermal power plant's flue gas satisfies emission standard, avoids the air preheater to block up and ammonia agent waste simultaneously.
Description
Technical field
The utility model belongs to monitoring technical field, particularly to a kind of denitrification apparatus the escaping of ammonia on-line monitoring system of thermal power plant
System.
Background technology
China's thermal power output accounts for gross generation 70% about, and coal accounts for the 90% of fired power generating unit fuel, with national warp
The rapid growth of Ji, generating capacity fast development, the atmosphere polluting problem being brought by fire coal is increasingly serious.If thermal power plant arranges
The atmosphere pollution put cannot get effective control, will directly influence the improvement of China's atmosphere quality.
For controlling pollution aggravation, promote the technological progress of Thermal Power Generation Industry and the sustainable development of power industry,《Thermal power plant is big
Gas pollutant emission standard》Start to execute, the control requirement of the concentration to fume emission and total emission volumn is strict all the more and accurate,
Correspondingly flue gas monitoring technology is put forward higher requirement.For realizing qualified discharge, thermal power plant is on the basis of desulfurizer
Install out of stock system additional, conventional denitrating technique adopts selective catalytic reduction, this technique denitration efficiency is high, stable performance, but deposits
In ammonia agent residual and escape, cause the problems such as environmental pollution, fund waste, air preheater blocking corrosion.
At present for selective catalytic reduction denitration, in order to solve, denitration outlet NOx distributing homogeneity is poor, the escaping of ammonia is dense
Degree is higher, impact unit air preheater safe operation the problems such as, the general ammonia spraying amount being determined using manual debugging under conventional load, disappear
Except the excessive the escaping of ammonia region in local, improve entrance ammonia injection uniformity, determine the maximum denitration efficiency under each load.The method
There is measurement condition and actual operating mode has differences, coal adaptability is poor, adjustable strategies are limited to sampled measurements accuracy
Etc. defect, lead to thermal power plant's denitration to run bad, therefore realize the real-time accurate measurements of denitrating system the escaping of ammonia and adjustment very must
Will.The escaping of ammonia detector commonly used at present is single-point correlation and extraction-type, does not possess representativeness for flue cross section it is impossible to anti-
Reflect real the escaping of ammonia distribution situation it is impossible to optimize and revise the effective foundation of offer for denitrating system.
Utility model content
Utility model purpose：In order to solve the problems of the prior art, the utility model provides a kind of multipoint mode the escaping of ammonia
On-line monitoring system, realizes uniform, the accurate real-time monitoring of ammonia slip concentration.
Technical scheme：For achieving the above object, the technical solution adopted in the utility model is：
A kind of multipoint mode the escaping of ammonia on-line monitoring system, including monitoring main frame, data acquisition unit and the escaping of ammonia detector,
Described monitoring main frame connects the escaping of ammonia detector, flow sensor, moisture transducer, TEMP by data acquisition unit
Device, NOx sensor and pressure sensor, described monitoring main frame connects display screen, and monitors main frame by wireless communication module even
Connect mobile terminal, described the escaping of ammonia detector, flow sensor, moisture transducer, temperature sensor, NOx sensor and pressure
Sensor all inserts flue.
Further, described the escaping of ammonia detector is multipoint mode the escaping of ammonia detector, and multipoint mode the escaping of ammonia detector includes
Several detection groups, probe 3 that each detection group includes being sequentially connected, electrical ball valve 4, secondary filter 5, ammonia density detector
6th, jet pump 8 and outlet 9, the probe 3 of each detection group is all connected with flue 1, and is located at setting between probe 3 and flue 1
There is aspiration pump 2, between the secondary filter 5 of each detection group and ammonia density detector 6, connect the escaping of ammonia detection main frame 7 altogether.
Further, it is connected using MODBUS RTU or RS485 communication between described monitoring main frame and data acquisition unit.
Further, described flow sensor, moisture transducer, temperature sensor, NOx sensor and pressure sensor
Output signal adopts 4 ~ 20mA analog quantity or RS485 to communicate with data acquisition unit.
Further, described data acquisition unit pass through signal isolator respectively with flow sensor, moisture transducer, temperature
Degree sensor, NOx sensor and pressure sensor connect.
Further, described signal isolator by flow sensor, moisture transducer, temperature sensor, NOx sensor and
The equal one-to-two of signal of pressure sensor, wherein one tunnel connects data acquisition unit, and another road is connected with DCS.
Further, described monitoring main frame is also associated with alarm module.
Further, described monitoring main frame passes through GPRS, CDMA, 3G, 4G or Wifi and communication of mobile terminal.
Further, described monitoring main frame passes through note and communication of mobile terminal.
Beneficial effect：Compared with prior art, the utility model has advantages below：
The ammonia slip concentration of the utility model real-time monitoring thermal power plant denitrating system, detection flue gas NOx, temperature, pressure simultaneously
The parameters such as power, flow, moisture and unit load, the data according to monitor in real time is it is ensured that coal steam-electric plant smoke meets discharge standard, same
When avoid air preheater blocking and ammonia agent waste.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of multipoint mode the escaping of ammonia detector in the utility model；
Wherein：1- flue, 2- aspiration pump, 3- pops one's head in, 4- electrical ball valve, 5- secondary filter, 6- ammonia density detector, 7-
The escaping of ammonia detects main frame, 8- jet pump, 9- outlet.
Specific embodiment
With reference to embodiment, the utility model is further described.
A kind of multipoint mode the escaping of ammonia on-line monitoring system, including monitoring main frame, data acquisition unit and the escaping of ammonia detector,
Described monitoring main frame connects the escaping of ammonia detector, flow sensor, moisture transducer, TEMP by data acquisition unit
Device, NOx sensor and pressure sensor, described monitoring main frame connects display screen, and monitors main frame by wireless communication module even
Connect mobile terminal, described the escaping of ammonia detector, flow sensor, moisture transducer, temperature sensor, NOx sensor and pressure
Sensor all inserts flue.
The Main Function of described monitoring main frame is in the data display and display screen collecting each sensor, will be various
The data syn-chronization that sensor collects sends to mobile terminal, and when ammonia density is more than certain value, warning message is sent
To related personnel.
Described monitoring main frame possesses warning function, and when the ammonia density detecting reaches certain value, monitoring host computer passes through short
Warning message is sent to related personnel by letter mode, points out it to be processed in time.
The number that data acquisition unit can be gathered by described monitoring main frame by modes such as GPRS/CDMA/3G/4G/Wifi
According to being sent to mobile terminal, realize real-time information sharing.
Further, it is connected using MODBUS RTU or RS485 communication between described monitoring main frame and data acquisition unit.
Further, described signal isolator by flow sensor, moisture transducer, temperature sensor, NOx sensor and
The signal one-to-two of pressure sensor, wherein one tunnel connects data acquisition unit, for on-line monitoring the escaping of ammonia situation, Ling Yilu
It is connected with DCS, for the detection of other states in flue；The effect that signal isolator primarily serves is by each sensor
Signal is divided into two, and a road signal is the system service, and another road signal can be used as other purposes.
A kind of multipoint mode the escaping of ammonia on-line monitoring system, including the escaping of ammonia detector, flow sensor, moisture transducer,
Temperature sensor, NOx sensor, pressure sensor, also include monitoring main frame data harvester；Described data acquisition unit
With monitoring main frame connect, data acquisition unit respectively with the escaping of ammonia detector, flow sensor, moisture transducer, TEMP
Device, NOx sensor and pressure sensor connect.
As shown in figure 1, a kind of actual motion schematic diagram of the utility model multipoint mode the escaping of ammonia on-line monitoring system, ammonia is escaped
Ease detector, flow sensor, moisture transducer, temperature sensor, NOx sensor and pressure sensor are all installed at flue
On, sensor one end is stretched in flue, carries out real-time online detection to flue gas；Described the escaping of ammonia detector is escaped using multipoint mode ammonia
Ease detector, each sensor output signal can be communicated with data acquisition unit using 4 ~ 20mA analog quantity or RS485.
Described the escaping of ammonia detector, flow sensor, moisture transducer, temperature sensor, NOx sensor, pressure sensing
Device is respectively used to detect flue gas ammonia slip concentration, flow, humidity, temperature, NOx concentration, pressure and other parameters in flue.
Described data acquisition unit can gather the signal of each sensor, the cigarette that data acquisition unit can be obtained
Gas ammonia slip concentration, flow, humidity, temperature, NOx concentration, pressure and other parameters are sent to monitoring main frame, and monitoring main frame can be to cigarette
The various parameters of gas are shown, are achieved in the on-line real time monitoring to ammonia slip concentration.Data acquisition unit can be one
Platform or multiple stage.Data acquisition unit can be connected by wired or wireless way with monitoring main frame.
As shown in Fig. 2 detection group elects 4 groups as, described the escaping of ammonia detector is multipoint mode the escaping of ammonia detector, multipoint mode ammonia
Escape detector includes several detection groups, probe 3 that each detection group includes being sequentially connected, electrical ball valve 4, secondary filter
5th, ammonia density detector 6, jet pump 8 and outlet 9, the probe 3 of each detection group is all directly connected to flue 1, and is located at spy
Between 3 and flue 1, it is provided with aspiration pump 2, connect altogether between the secondary filter 5 of each detection group and ammonia density detector 6
The escaping of ammonia detects main frame 7, and jet pump 8 produces negative pressure and passes through 3 suction flue gases to be measured of popping one's head in, and flue gas to be measured passes through electrical ball valve 4 He
Secondary filter 5 enters ammonia density detector 6, and ammonia density detector 6 measurement ammonia slip concentration result sends into the escaping of ammonia detection master
Machine 7, realizes multimetering.
Described multipoint mode the escaping of ammonia detector achieves multiple spot and monitors simultaneously, solves the escaping of ammonia monitoring in the flue of heavy in section
Uneven problem.
Can be connected by fieldbus between described monitoring main frame data harvester.Because the utility model does not limit
The quantity of the data acquisition unit that system monitoring main frame connects, the data acquisition dress that user can connect to monitoring main frame according to reality
The quantity put is accepted or rejected and is extended, and therefore can greatly reduce the time of installation, maintenance using field bus technique, save
Cost, makes the applicable ability of product improve.
The above be only preferred embodiment of the present utility model it should be pointed out that：Common skill for the art
For art personnel, on the premise of without departing from the utility model principle, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (9)
1. a kind of multipoint mode the escaping of ammonia on-line monitoring system, including monitoring main frame, data acquisition unit and the escaping of ammonia detector, its
It is characterised by：Described monitoring main frame pass through data acquisition unit connection the escaping of ammonia detector, flow sensor, moisture transducer,
Temperature sensor, NOx sensor and pressure sensor, described monitoring main frame connects display screen, and monitors main frame by channel radio
Letter module connects mobile terminal, described the escaping of ammonia detector, flow sensor, moisture transducer, temperature sensor, NOx sensing
Device and pressure sensor all insert flue.
2. multipoint mode the escaping of ammonia on-line monitoring system according to claim 1 it is characterised in that：Described the escaping of ammonia detector
For multipoint mode the escaping of ammonia detector, multipoint mode the escaping of ammonia detector includes several detection groups, and each detection group includes connecting successively
Probe, electrical ball valve, secondary filter, ammonia density detector, jet pump and the outlet connecing, the probe of each detection group all with
Flue connects, and is provided with aspiration pump positioned between probe and flue, and the secondary filter of each detection group and ammonia density detect
The escaping of ammonia detection main frame is connected altogether between device.
3. multipoint mode the escaping of ammonia on-line monitoring system according to claim 1 it is characterised in that：Described monitoring main frame and number
Connect according to adopting MODBUS RTU or RS485 communication between harvester.
4. multipoint mode the escaping of ammonia on-line monitoring system according to claim 1 it is characterised in that：Described flow sensor,
The output signal of moisture transducer, temperature sensor, NOx sensor and pressure sensor adopts 4 ~ 20mA analog quantity or RS485
With data acquisition unit communication.
5. multipoint mode the escaping of ammonia on-line monitoring system according to claim 1 it is characterised in that：Described data acquisition unit
By signal isolator respectively with flow sensor, moisture transducer, temperature sensor, NOx sensor and pressure sensor even
Connect.
6. multipoint mode the escaping of ammonia on-line monitoring system according to claim 5 it is characterised in that：Described signal isolator will
The signal of flow sensor, moisture transducer, temperature sensor, NOx sensor and pressure sensor is all divided into two, and wherein one
Road connects data acquisition unit, the connection of another road and DCS.
7. multipoint mode the escaping of ammonia on-line monitoring system according to claim 1 it is characterised in that：Described monitoring main frame also connects
It is connected to alarm module.
8. multipoint mode the escaping of ammonia on-line monitoring system according to claim 1 it is characterised in that：Described monitoring main frame passes through
GPRS, CDMA, 3G, 4G or Wifi and communication of mobile terminal.
9. multipoint mode the escaping of ammonia on-line monitoring system according to claim 1 it is characterised in that：Described monitoring main frame passes through
Note and communication of mobile terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620893462.5U CN205940635U (en) | 2016-08-16 | 2016-08-16 | Multipoint mode ammonia escape on -line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620893462.5U CN205940635U (en) | 2016-08-16 | 2016-08-16 | Multipoint mode ammonia escape on -line monitoring system |
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| Publication Number | Publication Date |
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| CN205940635U true CN205940635U (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620893462.5U Expired - Fee Related CN205940635U (en) | 2016-08-16 | 2016-08-16 | Multipoint mode ammonia escape on -line monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108434968A (en) * | 2018-04-25 | 2018-08-24 | 西安西热锅炉环保工程有限公司 | A kind of ammonia concentration subregion dynamic decision system and method in thermal power plant's denitration ammonia area |
| CN111359411A (en) * | 2020-03-26 | 2020-07-03 | 华润电力技术研究院有限公司 | Thermal power generating unit and NH-based thermal power generating unit3Measured denitration control method and system |
| CN113758920A (en) * | 2021-07-20 | 2021-12-07 | 北京新叶科技有限公司 | Ammonia escape monitoring device |
-
2016
- 2016-08-16 CN CN201620893462.5U patent/CN205940635U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108434968A (en) * | 2018-04-25 | 2018-08-24 | 西安西热锅炉环保工程有限公司 | A kind of ammonia concentration subregion dynamic decision system and method in thermal power plant's denitration ammonia area |
| CN108434968B (en) * | 2018-04-25 | 2023-09-12 | 西安西热锅炉环保工程有限公司 | Ammonia concentration partition dynamic decision-making system and method for thermal power plant denitration ammonia zone |
| CN111359411A (en) * | 2020-03-26 | 2020-07-03 | 华润电力技术研究院有限公司 | Thermal power generating unit and NH-based thermal power generating unit3Measured denitration control method and system |
| CN111359411B (en) * | 2020-03-26 | 2022-05-06 | 华润电力技术研究院有限公司 | Thermal power generating unit and NH-based thermal power generating unit3Measured denitration control method and system |
| CN113758920A (en) * | 2021-07-20 | 2021-12-07 | 北京新叶科技有限公司 | Ammonia escape monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20190816 |