CN206258432U - A kind of nitrogen oxides hard measurement device of compressed sensing - Google Patents
A kind of nitrogen oxides hard measurement device of compressed sensing Download PDFInfo
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- CN206258432U CN206258432U CN201621355422.1U CN201621355422U CN206258432U CN 206258432 U CN206258432 U CN 206258432U CN 201621355422 U CN201621355422 U CN 201621355422U CN 206258432 U CN206258432 U CN 206258432U
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Abstract
A kind of nitrogen oxides hard measurement device of compressed sensing, including data acquisition instrument, measurement host and computer system, the data acquisition instrument is connected to the measurement host, the measurement host is connected to the computer system, and the data acquisition instrument includes flue gas flow measuring instrumentss, unit load measuring instrumentss, coal-supplying amount measuring instrumentss, burnout degree throttle opening than measuring instrumentss and total blast volume measuring instrumentss.Nitrogen oxides hard measurement device described in the utility model, it is equipped with by by data acquisition instrument, measurement host and computer system, the live flue gas flow of Real-time Collection, unit load, coal-supplying amount, burnout degree throttle opening ratio, the road signal of total blast volume 5, using the principle compressing data of compressed sensing, calculated by the least square method supporting vector machine algorithm routine of computer, and now exhanst gas outlet amount of nitrogen oxides is restored using the retrieving algorithm in compressed sensing, improve the accuracy and real-time of nitrogen oxides measurement.
Description
Technical field
The utility model belongs to gas detection technology field, and in particular to a kind of nitrogen oxides hard measurement dress of compressed sensing
Put.
Background technology
Nitrogen oxides refers to the compound being only made up of nitrogen, two kinds of elements of oxygen, and common nitrogen oxides has nitric oxide
(NO, colourless), nitrogen dioxide (NO2, rufous), nitrous oxide (N2O), dinitrogen pentoxide (N2O5) etc., wherein except five oxidations
In outside solid under phenodiazine normality, all in gaseous state under other nitrogen oxides normalities.As the nitrogen oxides (NO of air pollutantsx) often
Refer to NO and NO2。
Nitrogen oxides can stimulate lung, make one the respiratory disease of more difficult resistance flu etc, and respiratory system is problematic
Personage such as asthmatics, can be easier to be influenceed by nitrogen dioxide, for children, nitrogen oxides be likely to result in lung development
Impaired, research points out that sucking nitrogen oxides for a long time may result in lung's structural change, but still not can determine that causes this consequence
Amount of nitrogen oxides and suction gas time.
Nitrogen oxides based on nitric oxide and nitrogen dioxide is the important original to form photochemical fog and acid rain
Cause, the nitrogen oxides in vehicle exhaust irradiates the react toxic smog to be formed, referred to as light with hydrocarbon through ultraviolet
Chemical fumes, photochemical fog has a special odor, stimulates eyes, injures plant, and can reduce atmospheric visibility, in addition,
The nitric acid and nitrous acid of the water reaction generation in nitrogen oxides and air are the compositions of acid rain.
Thermal power plant is one of main source of discharged nitrous oxides, and at present, denitrating flue gas are that most important nitrogen oxides is controlled
Reason method, general denitration control system measures the amount of nitrogen oxides of actual exhaust gas volumn, smoke inlet and outlet first
Deng then calculating the ammonia spraying amount of needs in conjunction with denitration efficiency set in advance, the ammonia spraying amount for calculating and actual ammonia flow
As the control instruction of spray ammonia regulating valve after being compared, suitable ammonia flow is maintained with rational valve opening.
For example, the utility model patent of China Patent No. CN201320481978.5 discloses a kind of novel high-efficiency and energy-saving cigarette
Gas denitrification apparatus, it specifically discloses the novel high-efficiency and energy-saving equipment for denitrifying flue gas includes：Cement decomposition kiln, preboiler, spray
Ammonia pipe, conditioning Tower, water Xian's atomizing spray pipe, screen pack, deduster, SCR reactors, exhaust chimney, pipeline.Cement decomposition kiln sets
The left end in novel high-efficiency and energy-saving equipment for denitrifying flue gas is put, the top of cement decomposition kiln sets spray ammonia pipe, and the top for spraying ammonia pipe sets
Preboiler is equipped with, preboiler connection conditioning Tower is provided with water Xian's atomizing spray pipe, the bottom connection of conditioning Tower in conditioning Tower
Screen pack, the end that goes out of screen pack connects deduster, and the outlet side of deduster is provided with SCR reactors, the outlet side of SCR reactors
Connection exhaust chimney.
For another example, the utility model patent of China Patent No. CN201320203383.3 discloses a kind of coke oven stove group nitrogen oxidation
Quality testing examining system, it is specifically disclosed：A kind of coke oven stove group nitrogen oxides detecting system, by stainless steel sampling apparatus, intermittently adopts
Sample control valve group, sampling controller, nitrogen-oxide analyzer, model calculation system composition；Described stainless steel sampling apparatus is
Two, it is respectively arranged at the chimney partition wall both sides between coke oven A, coke oven B；Described intermittent sampling control valve group is fast by two
Fast magnetic valve FV1, FV2 composition, two fast electromagnetic valves FV1, FV2 are sampled to two respectively under the control of sampling controller
Point carries out intermittent sampling；Described sampling controller is used to carry out batch (-type) controlling of sampling to intermittent sampling control valve group；Nitrogen oxygen
Compound analyzer is used to carry out accurate measurement to the nitrogen oxides being tested in gas, by sampled measurement input model computing system
System；The system uses a set of nitrogen oxides testing equipment, is capable of achieving two nitrogen oxides detections of coke oven, reduces equipment throwing
Money, certainty of measurement is high.
Obviously, prior art is that ammonia spraying amount is controlled by the detection to exhaust gas volumn, and is gone out by flue gas
Mouth is sampled and measure again, and data are analyzed from the analyzer that is drawn into of flue gas sample gas, and spray ammonia is calculated further according to data
, there is time delay in valve control instruction, the data that outlet nitrogen oxides draws are unable to actual verification according to entrance nitrogen oxygen among these
The automatic spray ammonia demand that compound data are calculated, the especially load or combustion conditions of unit change at any time, nitrogen oxides number
More it is difficult to control in the case of according to fluctuation, the exhanst gas outlet nitrogen oxides for directly being obtained with analyzer is controlled and is difficult to
The stable state control of system.
Based on as above problem, the utility model provides a kind of nitrogen oxides hard measurement device of compressed sensing, for existing
A kind of drawback of technology, there is provided measurement apparatus that amount of nitrogen oxides is exported for denitration control system, it is ensured that to exhanst gas outlet
The accurate measurement of the real-time content of nitrogen oxides, is easy to more accurately carry out on-line correction to ammonia spraying amount.
Utility model content
The utility model is achieved by the following technical solution：A kind of nitrogen oxides hard measurement device of compressed sensing,
Including data acquisition instrument, measurement host and computer system, the data acquisition instrument is connected to the measurement host, described
Measurement host is connected to the computer system, and the data acquisition instrument includes that flue gas flow measuring instrumentss, unit load are surveyed
Amount instrument, coal-supplying amount measuring instrumentss, burnout degree throttle opening are than measuring instrumentss and total blast volume measuring instrumentss, the measurement host bag
Include S7-200PLC-CPU modules, power module, PLC-AI modules, PLC- communication modules and PLC- storage cards, the power module
It is connected to S7-200PLC-CPU modules, PLC-AI modules, PLC- communication modules and PLC- storage cards, the PLC-AI moulds
Block, PLC- communication modules and PLC- storage cards are connected to S7-200PLC-CPU modules, the flue gas flow measuring instrumentss,
Unit load measuring instrumentss, coal-supplying amount measuring instrumentss, burnout degree throttle opening are distinguished than measuring instrumentss and total blast volume measuring instrumentss
PLC-AI modules are connected to, the PLC- communication modules are connected to computer system.
Further, the data acquisition instrument also includes that signal amplifies and isolation module, the flue gas flow measuring instrument
Table, unit load measuring instrumentss, coal-supplying amount measuring instrumentss, burnout degree throttle opening are more logical than measuring instrumentss and total blast volume measuring instrumentss
Cross signal amplification and be connected to the PLC-AI modules with isolation module.
Further, the computer system also includes compression module, LSSVM hard measurements module and recovery module, described
Compression module is used to be compressed the data transmitted dimensionality reduction, and the LSSVM hard measurements module is used for the number after compression dimensionality reduction
According to being trained, prediction outlet nitrogen oxides compressed value, the recovery module is used to restore exhanst gas outlet amount of nitrogen oxides
Value.
Further, the measurement host also includes instrument signal input terminal, and the instrument signal input terminal includes
Total blast volume measuring instrumentss signal input terminal, burnout degree throttle opening are than measuring instrumentss signal input terminal, coal-supplying amount measuring instrument
Table signal input terminal, unit load measuring instrumentss signal input terminal and flue gas flow measuring instrumentss signal input terminal.
Further, the computer system also includes printing device, and the printing device is connected to the department of computer science
System.
Further, the measurement host also includes system switching.
Compared with prior art, superior effect of the present utility model is：A kind of compressed sensing described in the utility model
Nitrogen oxides hard measurement device, be equipped with by by data acquisition instrument, measurement host and computer system, improve nitrogen
The accuracy and real-time of oxide measurement.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the nitrogen oxides hard measurement device of compressed sensing described in the utility model.
Reference is as follows：
1- flue gas flows measuring instrumentss, 2- unit loads measuring instrumentss, 3- coal-supplying amounts measuring instrumentss, 4- burnout degree air doors are opened
Degree is believed than measuring instrumentss, 5- total blast volumes measuring instrumentss, 6- total blast volume measuring instrumentss signal input terminal, 7- coal-supplying amounts measuring instrumentss
Number input terminal, 8- flue gas flow measuring instrumentss signal input terminal, 9- system switchings, 10- host housings, 11- communication jacks,
12- computers, 13- printers, 14- keyboards, 15- displays, 17- unit load measuring instrumentss signal input terminal, 18- after-flames
Wind throttle opening is than measuring instrumentss signal input terminal.
Specific embodiment
The utility model specific embodiment is described in further detail with reference to Figure of description.
As shown in figure 1, a kind of nitrogen oxides hard measurement device of compressed sensing, including data acquisition instrument, measurement host
And computer system, the data acquisition instrument is connected to the measurement host, and the measurement host is connected to the computer
System, the data acquisition instrument include flue gas flow measuring instrumentss 1, unit load measuring instrumentss 2, coal-supplying amount measuring instrumentss 3,
Burnout degree throttle opening than measuring instrumentss 4 and total blast volume measuring instrumentss 5, the measurement host include S7-200PLC-CPU modules,
Power module, PLC-AI modules, PLC- communication modules and PLC- storage cards, the power module are connected to S7-200PLC-
CPU module, PLC-AI modules, PLC- communication modules and PLC- storage cards, the PLC-AI modules, PLC- communication modules and PLC-
Storage card is connected to S7-200PLC-CPU modules, the flue gas flow measuring instrumentss 1, unit load measuring instrumentss 2, gives
Online coal quantity measurement instrument 3, burnout degree throttle opening are connected to PLC-AI modules than measuring instrumentss 4 and total blast volume measuring instrumentss 5,
The PLC- communication modules are connected to computer system.
The PLC- communication modules are connected to computer system by communication jacks 11.
Further, the data acquisition instrument also includes that signal amplifies and isolation module, the flue gas flow measuring instrument
Table 1, unit load measuring instrumentss 2, coal-supplying amount measuring instrumentss 3, burnout degree throttle opening are than measuring instrumentss 4 and total blast volume measuring instrument
Table 5 is amplified by signal and isolation module is connected to the PLC-AI modules.
Amplify through signal and send the PLC-AI modules to carry out A/D conversions with 5 tunnel analog signals after isolation processing, it is resulting after conversion
Flue gas flow, unit load, coal-supplying amount, burnout degree throttle opening ratio, the railway digital signal of total blast volume 5 through bus send into S7-
200PLC-CPU modules.
Further, the computer system also includes compression module, LSSVM hard measurements module and recovery module, described
Compression module is used to be compressed the data transmitted dimensionality reduction, and the LSSVM hard measurements module is used for the number after compression dimensionality reduction
According to being trained, prediction outlet nitrogen oxides compressed value, the recovery module is used to restore exhanst gas outlet amount of nitrogen oxides
Value.
Data after compressed module compression can also be stored in computer as the training data for updating off-line model,
Data dimension reduction after compression, it is smaller to account for calculator memory, is easy to storage, the exhanst gas outlet amount of nitrogen oxides for being calculated
In addition to display in real time is carried out through display, also stored by computer, be used to make form, and periodically carried out by printer
Report printing.
Further, the measurement host also includes instrument signal input terminal, and the instrument signal input terminal includes
Total blast volume measuring instrumentss signal input terminal 6, burnout degree throttle opening is measured than measuring instrumentss signal input terminal 18, coal-supplying amount
Instrument signal input terminal 7, unit load measuring instrumentss signal input terminal 17 and flue gas flow measuring instrumentss signal input part
Son 8.
The flue gas flow measuring instrumentss 1, unit load measuring instrumentss 2, coal-supplying amount measuring instrumentss 3, burnout degree air door are opened
Degree passes through flue gas flow measuring instrumentss signal input terminal 8, unit load respectively than measuring instrumentss 4 and total blast volume measuring instrumentss 5
Measuring instrumentss signal input part 17, coal-supplying amount measuring instrumentss signal input terminal 7, burnout degree throttle opening are than measuring instrumentss signal
Input terminal 18 and total blast volume measuring instrumentss signal input terminal 6 are connected to measurement host, the flue gas flow measuring instrumentss letter
Number input terminal 8, unit load measuring instrumentss signal input part 17, coal-supplying amount measuring instrumentss signal input terminal 7, burnout degree wind
Door opening ratio measuring instrumentss signal input terminal 18 and total blast volume measuring instrumentss signal input terminal 6 are located at the main frame of measurement host
On shell 10.
Further, the computer system also includes printing device, and the printing device is connected to the department of computer science
System.
The printing device is printer 13.
The computer system also includes computer 12, keyboard 14 and display 15.
Further, the measurement host also includes system switching 9.
The utility model is not limited to above-mentioned implementation method, in the case of without departing substantially from substance of the present utility model,
It may occur to persons skilled in the art that any deformation, improvement, replacement each fall within protection domain of the present utility model.
Claims (6)
1. the nitrogen oxides hard measurement device of a kind of compressed sensing, it is characterised in that including data acquisition instrument, measurement host and
Computer system, the data acquisition instrument is connected to the measurement host, and the measurement host is connected to the department of computer science
System, the data acquisition instrument includes flue gas flow measuring instrumentss, unit load measuring instrumentss, coal-supplying amount measuring instrumentss, after-flame
Wind throttle opening includes S7-200PLC-CPU modules, power supply mould than measuring instrumentss and total blast volume measuring instrumentss, the measurement host
Block, PLC-AI modules, PLC- communication modules and PLC- storage cards, the power module are connected to S7-200PLC-CPU moulds
Block, PLC-AI modules, PLC- communication modules and PLC- storage cards, PLC-AI modules, PLC- communication modules and PLC- storage cards point
S7-200PLC-CPU modules, flue gas flow measuring instrumentss, unit load measuring instrumentss, coal-supplying amount measuring instrumentss, combustion are not connected to
Wind throttle opening is connected to PLC-AI modules than measuring instrumentss and total blast volume measuring instrumentss to the greatest extent, and the PLC- communication modules connect
It is connected to the computer system.
2. the nitrogen oxides hard measurement device of compressed sensing according to claim 1, it is characterised in that the data acquisition
Instrument also includes that signal amplifies and isolation module, the flue gas flow measuring instrumentss, unit load measuring instrumentss, coal-supplying amount measurement
Instrument, burnout degree throttle opening are connected to by signal amplification than measuring instrumentss and total blast volume measuring instrumentss with isolation module
The PLC-AI modules.
3. the nitrogen oxides hard measurement device of compressed sensing according to claim 1, it is characterised in that the department of computer science
System also includes compression module, LSSVM hard measurements module and recovery module.
4. the nitrogen oxides hard measurement device of compressed sensing according to claim 1, it is characterised in that the measurement host
Also include instrument signal input terminal, the instrument signal input terminal includes total blast volume measuring instrumentss signal input terminal, combustion
Wind throttle opening to the greatest extent is than measuring instrumentss signal input terminal, coal-supplying amount measuring instrumentss signal input terminal, unit load measuring instrument
Table signal input terminal and flue gas flow measuring instrumentss signal input terminal.
5. the nitrogen oxides hard measurement device of compressed sensing according to claim 1, it is characterised in that the department of computer science
System also includes printing device, and the printing device is connected to the computer system.
6. the nitrogen oxides hard measurement device of compressed sensing according to claim 1, it is characterised in that the measurement host
Also include system switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621355422.1U CN206258432U (en) | 2016-12-09 | 2016-12-09 | A kind of nitrogen oxides hard measurement device of compressed sensing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621355422.1U CN206258432U (en) | 2016-12-09 | 2016-12-09 | A kind of nitrogen oxides hard measurement device of compressed sensing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206258432U true CN206258432U (en) | 2017-06-16 |
Family
ID=59029773
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621355422.1U Expired - Fee Related CN206258432U (en) | 2016-12-09 | 2016-12-09 | A kind of nitrogen oxides hard measurement device of compressed sensing |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546704A (en) * | 2016-12-09 | 2017-03-29 | 华北电力大学（保定） | A kind of nitrogen oxides hard measurement device of compressed sensing and its measuring method |
-
2016
- 2016-12-09 CN CN201621355422.1U patent/CN206258432U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546704A (en) * | 2016-12-09 | 2017-03-29 | 华北电力大学（保定） | A kind of nitrogen oxides hard measurement device of compressed sensing and its measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20170616 Termination date: 20171209 |