CN110346442A - A kind of monitoring device for pulverized-coal fired boiler working environment - Google Patents
A kind of monitoring device for pulverized-coal fired boiler working environment Download PDFInfo
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- CN110346442A CN110346442A CN201910723165.4A CN201910723165A CN110346442A CN 110346442 A CN110346442 A CN 110346442A CN 201910723165 A CN201910723165 A CN 201910723165A CN 110346442 A CN110346442 A CN 110346442A
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- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
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- G01N27/4162—Systems investigating the composition of gases, by the influence exerted on ionic conductivity in a liquid
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Abstract
The present invention relates to boiler monitoring device fields, and disclose a kind of monitoring device for pulverized-coal fired boiler working environment, including the deduster being mounted on the outlet pipe of boiler and monitoring device, the monitoring device is located at the side of deduster and keep away from boiler, the monitoring device includes square tube, insulated liner is provided on the inner wall of the square tube, the inside of the insulated liner is equipped with multipair electrode, spacing between the positive and negative anodes of the electrode is identical, electrode positioned at the insulated liner middle inside is bonded two-by-two, and insulating film is provided between the electrode being bonded to each other, the top and bottom end of the electrode are provided with multiple binding posts through insulated liner and square tube.Potential changes between corresponding two electrodes, the variation being finally embodied on voltage, and voltage measurement table, which measures, to be fed back to monitoring system after the numerical value of voltage change and handled, to realize, detection accuracy is high, the fireballing advantage of detection.
Description
Technical field
The present invention relates to boiler monitoring device field, specially a kind of monitoring device for pulverized-coal fired boiler working environment.
Background technique
Pulverized-coal fired boiler has been widely applied in the industrial production, and pulverized-coal fired boiler in burning, mainly wherein put by carbon burning
Heat, carbon is first converted into carbon monoxide in burning and is then converted to carbon dioxide, and reaction process is heat release, the combustion heat release of carbon
Process is related with the content of oxygen, once the burning of oxygen content deficiency is insufficient, then easily generates carbon monoxide and is discharged, and carbon monoxide
Colourless, tasteless and nonirritant and be slightly soluble in water etc. and cause, carbon monoxide is more intractable and realizes, while carbon monoxide is also
It can make one to be poisoned, tissue is caused to suffocate, it is dead when serious.
The product that patent document CN205352468U is provided is acquired by being monitored to coal-burning boiler work site environments
Operation field quality of air environment parameter, and then collected information is analyzed, make boiler operatiopn Operating condition adjustment and ring
Border regulation, but the relative molecular mass of carbon monoxide is less than the relative molecular mass of air, when there is carbon monoxide leakage, one
Carbonoxide moves up, and monitoring device is difficult to carry out accurate detection to the environment near boiler, and is once able to detect
To carbon monoxide, then CO gas is necessarily full of entire boiler operation field, monitoring device has not had expected
Monitoring effect, and carbon monoxide and air mix object explosion limit between 12%~74.2%, easily explode, therefore the skill
Expected monitoring effect is not achieved in art scheme.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of monitoring device for pulverized-coal fired boiler working environment,
Solve the problems, such as that the carbon monoxide monitoring effect proposed in background technique is undesirable.
The present invention is to realize that technical purpose adopts the following technical scheme that
A kind of monitoring device for pulverized-coal fired boiler working environment, including the deduster being mounted on the outlet pipe of boiler
And monitoring device, the monitoring device are located at the side of deduster and keep away from boiler；
The monitoring device includes square tube, is provided with insulated liner on the inner wall of the square tube, the insulated liner it is interior
Portion is equipped with multipair electrode, and the spacing between the positive and negative anodes of the electrode is identical, positioned at the electricity of the insulated liner middle inside
Pole is bonded two-by-two, and insulating film is provided between the electrode being bonded to each other, and the top and bottom end of the electrode are provided with
Multiple binding posts through insulated liner and square tube, the wiring connecting at the top of the square tube and with the positive and negative anodes of counter electrode
Column is connect with voltage measurement table, positioned at the square tube bottom end and the binding post connecting with the positive and negative anodes of counter electrode and power supply company
It connects.
Preferably, the electrode is metal foil, and the material of the insulating film is polytetrafluoroethylene (PTFE).
Preferably, mixing tank is installed on the outlet pipe between the deduster and monitoring device, the mixing tank
Bottom is connected with oxygen hose, and the mixing tank is internally provided with impeller, and the impeller passes through the inner wall of support frame and mixing tank
It is fixedly connected, the internal diameter of the air inlet for the inlet end that the mixing tank is connect with outlet pipe is less than the internal diameter of outlet pipe.
Preferably, the deduster is desulphurization denitration deduster, and the dehydration device at the house outlet end moves to prison
It surveys on device and the outlet pipe of keep away from boiler side.
Preferably, the voltage measurement table is electrically connected with monitoring system.
Preferably, the side of the monitoring device is provided with alarm.
The present invention have it is following the utility model has the advantages that
1, the monitoring device for being used for pulverized-coal fired boiler working environment is filled by installing mixing tank and monitoring on outlet pipe
It sets, mixing tank is since the oxygen for being sent into oxygen hose is sufficiently mixed with CO gas, when CO gas is by corresponding to
Electrode between when, carbon ion in carbon monoxide loses electronics in cathode becomes+4 valences from unstable+divalent, and anode
Oxygen, which obtains electronics, becomes-divalent, and therefore-divalent oxonium ion forms carbon dioxide in conjunction with the carbon ion for becoming+4 valences, due to this
The electronics movement at place includes two electronics that carbon ion loses, therefore potential changes between corresponding two electrodes, most
The variation being embodied on voltage eventually, voltage measurement table, which measures, to be fed back to monitoring system after the numerical value of voltage change and is handled, from
And realize detection accuracy height, the fireballing advantage of detection.
2, the monitoring device for being used for pulverized-coal fired boiler working environment is occurred by the carbon monoxide between corresponding electrode
Redox reaction not only has detected the amount of carbon monoxide, while also being handled imperfect combustion carbon monoxide, i.e.,
Just the working condition of boiler is not adjusted in time, there will not be carbon monoxide discharge, to protect boiler building ring
The safety in border.
Detailed description of the invention
Fig. 1 is side view of the invention；
Fig. 2 is the cross-sectional view in Fig. 1 at A-A；
Fig. 3 is the cross-sectional view in Fig. 1 at B-B.
In figure: 1, outlet pipe；2, deduster；3, monitoring device；4, square tube；5, insulated liner；6, electrode；7, it insulate
Film；8, binding post；9, voltage measurement table；10, mixing tank；11, oxygen hose；12, impeller；13, support frame；14, air inlet.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3 is please referred to, a kind of monitoring for pulverized-coal fired boiler working environment that embodiment according to the present invention provides fills
It sets, including the deduster 2 being mounted on the outlet pipe 1 of boiler and monitoring device 3, monitoring device 3 is located at deduster 2 and remote
Side from boiler；
Monitoring device 3 includes square tube 4, is provided with insulated liner 5 on the inner wall of square tube 4, the inside of insulated liner 5 is equipped with
Multipair electrode 6, the spacing between the positive and negative anodes of electrode 6 is identical, and the electrode 6 positioned at 5 middle inside of insulated liner is bonded two-by-two, and
Insulating film 7 is provided between the electrode 6 being bonded to each other, the top and bottom end of electrode 6 are provided with multiple through 5 He of insulated liner
The binding post 8 of square tube 4, positioned at the binding post 8 and voltage measurement table 9 square tube 4 top and connect with the positive and negative anodes of counter electrode 6
(model: the bis- aobvious tables of D52-2042,220V, measurement accuracy 1%, sample rate: 2S/ times) connection, be located at 4 bottom end of square tube and with it is right
The binding post 8 for answering the positive and negative anodes of electrode 6 to connect connects to power supply.
Wherein, electrode 6 is metal foil, and the material of insulating film 7 is polytetrafluoroethylene (PTFE), so that electrode 6 has biggish table
Area accelerates catalytic electrochemical reaction, and the electrode 6 positioned at 7 two sides of insulating film will not be interacted.
Wherein, mixing tank 10, the bottom of mixing tank 10 are installed on the outlet pipe 1 between deduster 2 and monitoring device 3
It is connected with oxygen hose 11, mixing tank 10 is internally provided with impeller 12, and impeller 12 passes through the inner wall of support frame 13 and mixing tank 10
It being fixedly connected, the internal diameter of the air inlet 14 for the inlet end that mixing tank 10 is connect with outlet pipe 1 is less than the internal diameter of outlet pipe 1,
Since carbon dioxide can be generated after the reacting with oxygen of carbon monoxide, and water plays the role of conducting medium, therefore will
After water is atomized, the redox reaction of carbon monoxide can be promoted.
Wherein, deduster 2 be desulphurization denitration deduster, and the dehydration device of 2 outlet end of deduster move to monitoring device 3 and
On the outlet pipe 1 of keep away from boiler side, the gas after dust-removal and desulfurizing denitration can have steam, it will usually in deduster 2
Outlet end be provided with dehydration device, but after gas enters monitoring device 3, water is needed to play the role of conducting medium promotion
Therefore going out for monitoring device 3 and keep away from boiler side is arranged in dehydration device herein by the chemical reaction of carbon monoxide and water
It, can will be after reaction and extra water is absorbed and removed in feed channel 1.
Wherein, voltage measurement table 9 is electrically connected with monitoring system, since carbon monoxide molecule and oxygen molecule are in working electrode
It reacts on 6, be transformed into carbon dioxide and generate hydrogen ion and electronics, and the product changed is transferred on another electrode 6,
It reacts with the oxygen on this electrode 6 and generates hydrone with hydrogen ion again, the movement of electronics is so that between the two electrodes 6
Potential change occurs, therefore the variation of voltage between the electrode 6 can be measured by voltage measurement table 9.
Wherein, the side of monitoring device 3 is provided with alarm, after the content of carbon monoxide is to alarming value, can pass through report
Alert device alarm, reminds staff to pay attention to.
Working principle: fume gases are discharged by outlet pipe 1, and successively pass through deduster 2 and monitoring device 3,
Gas can remove sulfide, nitride and the dust granule in gas after deduster 2, due to 2 outlet end of deduster
Dehydration device moves on the outlet pipe 1 of monitoring device 3 and keep away from boiler side, therefore, is contained by the gas that deduster 2 flows out
There is certain moisture, be again introduced into mixing tank 10, since the internal diameter that the internal diameter of air inlet 14 is less than outlet pipe 1 passes through air-flow
Flow velocity increases when air inlet 14,12 faster rotational speed of impeller blown by air-flow, preferably will flow into mixing tank by oxygen hose 11
Liquid in 10 crushes atomization, when gas and water mist are by there is the long and narrow gap of several electrodes 6 composition, carbon monoxide point
Son and hydrone react on working electrode 6 (cathode), are transformed into carbon dioxide and generate hydrogen ion and electronics, and change
Product be transferred on another electrode 6 (anode), react again with the oxygen on this electrode 6 (anode) raw with hydrogen ion
At hydrone, can be measured by voltage measurement table 9 between the electrode 6 between the two electrodes 6 (corresponding positive and negative electrode)
The variation of voltage can calculate the change of electronics in the voltage change Input Monitor Connector system in all voltage measurement tables 9
Change amount, and then the amount that carbon monoxide is transformed into carbon dioxide is exported, the gas for completing reaction is discharged after dehydration device is dehydrated.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of monitoring device for pulverized-coal fired boiler working environment, including the deduster that is mounted on the outlet pipe of boiler with
And monitoring device, it is characterised in that: the monitoring device is located at the side of deduster and keep away from boiler；
The monitoring device includes square tube, and insulated liner, the inside peace of the insulated liner are provided on the inner wall of the square tube
Equipped with multipair electrode, the spacing between the positive and negative anodes of the electrode is identical, positioned at the electrode two of the insulated liner middle inside
Two fittings, and insulating film is provided between the electrode being bonded to each other, the top and bottom end of the electrode are provided with multiple
Through the binding post of insulated liner and square tube, the binding post that connect at the top of the square tube and with the positive and negative anodes of counter electrode and
The connection of voltage measurement table, positioned at the square tube bottom end and the binding post that connect with the positive and negative anodes of counter electrode connects to power supply.
2. a kind of monitoring device for pulverized-coal fired boiler working environment according to claim 1, it is characterised in that: the electricity
Pole is metal foil, and the material of the insulating film is polytetrafluoroethylene (PTFE).
3. a kind of monitoring device for pulverized-coal fired boiler working environment according to claim 1, it is characterised in that: described to remove
Mixing tank is installed, the bottom of the mixing tank is connected with oxygen hose, described on the outlet pipe between dirt device and monitoring device
Mixing tank is internally provided with impeller, and the impeller is fixedly connected by support frame with the inner wall of mixing tank, the mixing tank with
The internal diameter of the air inlet of the inlet end of outlet pipe connection is less than the internal diameter of outlet pipe.
4. a kind of monitoring device for pulverized-coal fired boiler working environment according to claim 1, it is characterised in that: described to remove
Dirt device is desulphurization denitration deduster, and the dehydration device at the house outlet end moves to monitoring device and keep away from boiler side
On outlet pipe.
5. a kind of monitoring device for pulverized-coal fired boiler working environment according to claim 1, it is characterised in that: the electricity
Pressure measurement table is electrically connected with monitoring system.
6. a kind of monitoring device for pulverized-coal fired boiler working environment according to claim 1, it is characterised in that: the prison
The side for surveying device is provided with alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910723165.4A CN110346442B (en) | 2019-08-06 | 2019-08-06 | Monitoring device for working environment of pulverized coal fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910723165.4A CN110346442B (en) | 2019-08-06 | 2019-08-06 | Monitoring device for working environment of pulverized coal fired boiler |
Publications (2)
| Publication Number | Publication Date |
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| CN110346442A true CN110346442A (en) | 2019-10-18 |
| CN110346442B CN110346442B (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910723165.4A Active CN110346442B (en) | 2019-08-06 | 2019-08-06 | Monitoring device for working environment of pulverized coal fired boiler |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01167959A (en) * | 1987-12-23 | 1989-07-03 | Tokyo Gas Co Ltd | Internally reforming type molten carbonate fuel cell |
| US6488836B1 (en) * | 1999-07-29 | 2002-12-03 | Kabushikikaisha Equos Research | CO gas sensor and method of using same |
| CN1547007A (en) * | 2003-12-08 | 2004-11-17 | 乐清市西埃斯电子有限公司 | Three-cell series compound-carbon monoxide transducer and manufacturing method thereof |
| CN102239407A (en) * | 2008-10-10 | 2011-11-09 | 法国原子能与替代能委员会 | Device for determining carbon monoxide concentration and related method |
| CN102879529A (en) * | 2012-10-10 | 2013-01-16 | 温平 | Wet type sample gas analyzing system applicable to monitoring of combustion conditions of coal-fired kilns |
| CN203025149U (en) * | 2012-12-27 | 2013-06-26 | 济源市维创自动化科技有限公司 | Coal mine carbon monoxide sensor |
-
2019
- 2019-08-06 CN CN201910723165.4A patent/CN110346442B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01167959A (en) * | 1987-12-23 | 1989-07-03 | Tokyo Gas Co Ltd | Internally reforming type molten carbonate fuel cell |
| US6488836B1 (en) * | 1999-07-29 | 2002-12-03 | Kabushikikaisha Equos Research | CO gas sensor and method of using same |
| CN1547007A (en) * | 2003-12-08 | 2004-11-17 | 乐清市西埃斯电子有限公司 | Three-cell series compound-carbon monoxide transducer and manufacturing method thereof |
| CN102239407A (en) * | 2008-10-10 | 2011-11-09 | 法国原子能与替代能委员会 | Device for determining carbon monoxide concentration and related method |
| CN102879529A (en) * | 2012-10-10 | 2013-01-16 | 温平 | Wet type sample gas analyzing system applicable to monitoring of combustion conditions of coal-fired kilns |
| CN203025149U (en) * | 2012-12-27 | 2013-06-26 | 济源市维创自动化科技有限公司 | Coal mine carbon monoxide sensor |
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| CN110346442B (en) | 2021-07-20 |
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Effective date of registration: 20210624 Address after: 224599 South Side Complex Building of Beishugang Highway, Binhai County, Yancheng City, Jiangsu Province Applicant after: State Power Investment Group Xiexin Binhai Power Generation Co.,Ltd. Address before: No.16, Foping 4th Road, Guicheng Street, Nanhai District, Foshan City, Guangdong Province Applicant before: Xu Lei |
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