CN207611032U - The detection alarm system of the escaping of ammonia in exhaust gas is discharged in a organized way in a kind of coal-burning power plant - Google Patents
The detection alarm system of the escaping of ammonia in exhaust gas is discharged in a organized way in a kind of coal-burning power plant Download PDFInfo
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- CN207611032U CN207611032U CN201721901402.4U CN201721901402U CN207611032U CN 207611032 U CN207611032 U CN 207611032U CN 201721901402 U CN201721901402 U CN 201721901402U CN 207611032 U CN207611032 U CN 207611032U
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Abstract
The detection alarm system of the escaping of ammonia in exhaust gas, including smoke collecting device and ammonia detection device are discharged in a organized way in a kind of coal-burning power plant of the utility model；Smoke collecting device includes sampling pipe, dedusting mechanism and vacuum pump；Ammonia detection device includes ammonia gas sensor, voltage conversion circuit, amplifying circuit, A/D converter circuit, main control unit and display unit；Ammonia concentration is converted into current signal input voltage switching circuit by ammonia gas sensor, being connected with voltage conversion circuit for amplifying circuit receives the voltage signal that conversion obtains, A/D converter circuit is connected with amplifying circuit receives amplified voltage signal, main control unit is connected with A/D converter circuit receives the digital signal that conversion obtains, and main control unit handles digital signal and is transferred to display unit.The detection alarm system acquires the gas in flue by smoke collecting device, and the amount of ammonia slip in flue gas is quickly detected by ammonia detection device, it can be ensured that power-plant flue gas discharge meets standard.
Description
Technical field
The utility model is related to environmental monitoring technology fields more particularly to a kind of coal-burning power plant to discharge ammonia in exhaust gas in a organized way
The detection alarm system of escape.
Background technology
China's thermal power output accounts for gross generation 70% or so, and coal accounts for the 90% of fired power generating unit fuel, with its people
Economic rapid growth, power generation capacity are grown rapidly, the atmosphere polluting problem getting worse caused by fire coal, the especially northern winter
The period atmosphere polluting problem that heats in season is even more serious.It, will be straight if the atmosphere pollution of power plant emission cannot be controlled effectively
Connect the improvement for influencing China's atmosphere quality.
Pollution aggravation in order to control, promotes the technological progress of Thermal Power Generation Industry and the sustainable development of power industry,《Thermal power plant is big
Gas emission standard》Start to execute, the control of concentration and total emission volumn to flue gas emission requires more stringent and accurate, phase
Answer to flue gas monitoring technology, more stringent requirements are proposed.To realize qualified discharge, denitrating system is installed additional in thermal power plant, common de-
Nitre technique uses selective catalytic reduction, and the technique denitration efficiency is high, performance is stablized, but there are ammonia agent residual and escape, makes
The problem of at environmental pollution.In order to ensure ammonia escape amount needs a kind of detection alarm system in safe range, in flue
Ammonia escape amount be used for quickly detecting and carry out exceeded alarm.
Utility model content
In order to solve the above technical problems, the escaping of ammonia in exhaust gas discharges in a organized way in a kind of coal-burning power plant of the offer of the utility model
Detection alarm system, the ammonia escape amount in flue can be used for quickly detecting and carry out exceeded alarm.
The detection alarm system of the escaping of ammonia in exhaust gas is discharged in a organized way by a kind of coal-burning power plant of the utility model, including：Cigarette
Gas harvester and ammonia detection device；
The smoke collecting device includes：Sequentially connected sampling pipe, dedusting mechanism and vacuum pump；
The ammonia detection device includes：Ammonia gas sensor, voltage conversion circuit, amplifying circuit, A/D converter circuit, master control
Unit and display unit；
The vacuum pump is connected with ammonia gas sensor, and the ammonia concentration that the ammonia gas sensor acquires vacuum pump is converted
At current signal transfer to voltage conversion circuit, the amplifying circuit is connected with the voltage conversion circuit to receive conversion
The voltage signal of acquisition, the A/D converter circuit is connected with the amplifying circuit to receive amplified voltage signal, described
Main control unit is connected with A/D converter circuit to receive the digital signal that conversion obtains, and the main control unit carries out digital signal
It handles and display unit is transferred to by serial ports and shown.
In the detection alarm system that the escaping of ammonia in exhaust gas discharges in a organized way in the coal-burning power plant of the utility model, the ammonia
Detection device further includes the input unit being connected with the main control unit.
In the detection alarm system that the escaping of ammonia in exhaust gas discharges in a organized way in the coal-burning power plant of the utility model, the ammonia
Detection device further includes the alarm unit being connected with the main control unit.
In the detection alarm system that the escaping of ammonia in exhaust gas discharges in a organized way in the coal-burning power plant of the utility model, the alarm
Unit is LED light or buzzer.
In the detection alarm system that the escaping of ammonia in exhaust gas discharges in a organized way in the coal-burning power plant of the utility model, the ammonia
Detection device further includes the vacuum pump control circuit that the flow to vacuum pump being connected with main control unit is controlled.
The detection alarm system of the escaping of ammonia in exhaust gas is discharged in a organized way by a kind of coal-burning power plant of the utility model, passes through flue gas
Harvester acquires the gas in flue, and fast and accurately detected by ammonia detection device the amount of ammonia slip in flue gas and and
Shi Jinhang alarms, to ensure that power-plant flue gas discharge meets standard.
Description of the drawings
Fig. 1 is a kind of structure diagram for the detection alarm system that the escaping of ammonia in exhaust gas discharges in a organized way in coal-burning power plant.
Specific implementation mode
Discharge the detection alarm system of the escaping of ammonia in exhaust gas in a organized way for a kind of coal-burning power plant of the utility model as shown in Figure 1
System, including：Smoke collecting device and ammonia detection device.The smoke collecting device includes：Sequentially connected sampling pipe 11 removes
Dirt mechanism 12 and vacuum pump 13.When it is implemented, dedusting mechanism 12 may also set up in sampling pipe 11, flue gas is in sampling pipe 11
Water-dust removing is directly carried out in flow process.
Ammonia detection device includes：Ammonia gas sensor 1, voltage conversion circuit 2, amplifying circuit 3, A/D converter circuit 4, master control
Unit 5 and display unit 6.
The vacuum pump 13 is connected with ammonia gas sensor 1, and ammonia gas sensor 1 is connected with voltage conversion circuit 2, ammonia
Sensor 1 is used to the ammonia concentration that vacuum pump 13 acquires being converted into current signal transfer to voltage conversion circuit 2.Voltage is converted
Circuit 2 is connected with amplifying circuit 3, and voltage conversion circuit 2 is output to amplification again for current signal to be converted into voltage signal
Circuit 3.Amplifying circuit 3 is connected with A/D converter circuit 4, and amplifying circuit 3 is used for output after voltage signal enhanced processing to AD
Conversion circuit 4.A/D converter circuit 4 is connected with main control unit 5, and voltage signal is converted into digital signal and passed by A/D converter circuit 4
It is defeated by main control unit 5.Main control unit 5 is connected with display unit 6, and main control unit 5 handles digital signal and passes through string
Port transmission is shown to display unit 6.
Further, the ammonia detection device further includes the input unit 7 being connected with main control unit 5.Input unit 7
For inputting calibration information, equipment needs to carry out calibration calibration before dispatching from the factory, when being demarcated using normal concentration gas, Ke Yitong
Input standard gas concentration value is crossed to be corrected to the numerical value shown by display unit 6.
Further, the ammonia detection device further includes the alarm unit 8 being connected with the main control unit 5.It is described
Alarm unit 8 is LED light or buzzer.Light warning or audible alarm prompt are carried out when detecting that ammonia is exceeded.
Further, the ammonia detection device further include the flow to vacuum pump 13 that is connected with main control unit 5 into
The vacuum pump control circuit 9 of row control.
When it is implemented, main control unit 5 uses STM32F103c microcontrollers.Display unit 6 is LED charactrons display screen.
The above is only the preferred embodiment of the present invention, the thought being not intended to limit the utility model, it is all
Within the spirit and principles of the utility model, it is new to should be included in this practicality for any modification, equivalent replacement, improvement and so on
Within the protection domain of type.
Claims (5)
1. the detection alarm system of the escaping of ammonia in exhaust gas is discharged in a organized way by a kind of coal-burning power plant, which is characterized in that including：Flue gas is adopted
Acquisition means and ammonia detection device；
The smoke collecting device includes：Sequentially connected sampling pipe, dedusting mechanism and vacuum pump；
The ammonia detection device includes：Ammonia gas sensor, voltage conversion circuit, amplifying circuit, A/D converter circuit, main control unit
And display unit；
The vacuum pump is connected with ammonia gas sensor, and the ammonia concentration that vacuum pump acquires is converted into electricity by the ammonia gas sensor
Signal transmission is flowed to voltage conversion circuit, and being connected with the voltage conversion circuit for the amplifying circuit is obtained to receive conversion
Voltage signal, the A/D converter circuit is connected with the amplifying circuit to receive amplified voltage signal, the master control
Unit is connected with A/D converter circuit to receive the digital signal that conversion obtains, and the main control unit handles digital signal
And display unit is transferred to by serial ports and is shown.
2. the detection alarm system of the escaping of ammonia in exhaust gas is discharged in a organized way by coal-burning power plant as described in claim 1, feature exists
In the ammonia detection device further includes the input unit being connected with the main control unit.
3. the detection alarm system of the escaping of ammonia in exhaust gas is discharged in a organized way by coal-burning power plant as described in claim 1, feature exists
In the ammonia detection device further includes the alarm unit being connected with the main control unit.
4. the detection alarm system of the escaping of ammonia in exhaust gas is discharged in a organized way by coal-burning power plant as claimed in claim 3, feature exists
In the alarm unit is LED light or buzzer.
5. the detection alarm system of the escaping of ammonia in exhaust gas is discharged in a organized way by coal-burning power plant as described in claim 1, feature exists
In the ammonia detection device further includes the vacuum pump control that the flow to vacuum pump being connected with main control unit is controlled
Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721901402.4U CN207611032U (en) | 2017-12-29 | 2017-12-29 | The detection alarm system of the escaping of ammonia in exhaust gas is discharged in a organized way in a kind of coal-burning power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721901402.4U CN207611032U (en) | 2017-12-29 | 2017-12-29 | The detection alarm system of the escaping of ammonia in exhaust gas is discharged in a organized way in a kind of coal-burning power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207611032U true CN207611032U (en) | 2018-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721901402.4U Active CN207611032U (en) | 2017-12-29 | 2017-12-29 | The detection alarm system of the escaping of ammonia in exhaust gas is discharged in a organized way in a kind of coal-burning power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046939A (en) * | 2021-10-28 | 2022-02-15 | 中国地质大学（武汉） | Liquid ammonia leakage detection system and method for low-temperature refrigeration house |
-
2017
- 2017-12-29 CN CN201721901402.4U patent/CN207611032U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046939A (en) * | 2021-10-28 | 2022-02-15 | 中国地质大学（武汉） | Liquid ammonia leakage detection system and method for low-temperature refrigeration house |
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