CN212722711U - Gas on-line monitoring device based on electrochemical sensor - Google Patents
Gas on-line monitoring device based on electrochemical sensor Download PDFInfo
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- CN212722711U CN212722711U CN202021148623.0U CN202021148623U CN212722711U CN 212722711 U CN212722711 U CN 212722711U CN 202021148623 U CN202021148623 U CN 202021148623U CN 212722711 U CN212722711 U CN 212722711U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000002699 waste material Substances 0.000 claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 12
- 238000007791 dehumidification Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 abstract description 73
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 20
- 239000003546 flue gas Substances 0.000 abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000005518 electrochemistry Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001745 non-dispersive infrared spectroscopy Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- XVIZMMSINIOIQP-UHFFFAOYSA-N 1,2-dichloro-3-(2-chlorophenyl)benzene Chemical compound ClC1=CC=CC(C=2C(=CC=CC=2)Cl)=C1Cl XVIZMMSINIOIQP-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The utility model discloses a gas online monitoring device based on an electrochemical sensor, which comprises a box body and a box cover, wherein the box body is movably connected with the box cover, a sample gas inlet, a first waste liquid outlet and a first tail gas outlet are arranged on the box body, and a condenser, a peristaltic pump, a flow limiting pipe, a plurality of electrochemical sensors and a controller are arranged in the box body; the sample gas inlet, the condenser, the flow-limiting pipe, the electrochemical sensor and the first tail gas outlet are sequentially connected through a gas pipeline, the front end of the electrochemical sensor is connected with the flow-limiting pipe, and the liquid outlet of the condenser is extracted through a peristaltic pump and connected with the first waste liquid outlet; the controller is electrically connected with the electrochemical sensor. The online monitoring of the flue gas can be realized by adopting the electrochemical sensor, the cost is reduced, the result is simple, and the production is easy.
Description
Technical Field
The utility model belongs to the technical field of gas monitoring equipment, especially, relate to a gaseous on-line monitoring device based on electrochemical sensor.
Background
During the combustion process of the boiler, SO is generated2、O2、NO、CO、NO2And when the gas is needed, the waste gas generated by the combustion of the boiler needs to be analyzed, so that the harmful gas in the waste gas does not pollute the atmosphere. Before the boiler flue gas is discharged, a part of sample gas needs to be extracted, the sample gas is analyzed, and corresponding measures need to be taken if the discharge requirement cannot be met. Meanwhile, the process cannot affect the production.
The existing boiler flue gas on-line monitoring device mostly adopts an NDIR infrared principle or an ultraviolet differential spectrum absorption method. The novel water-based paint has the advantages of long service life, small environmental interference factor and the like. But has the disadvantages of high production difficulty, high cost and the like, which are not acceptable for boiler manufacturers with limited budget and small production scale.
SUMMERY OF THE UTILITY MODEL
The utility model provides a gaseous on-line monitoring device based on electrochemical sensor adopts electrochemical sensor can realize the on-line monitoring of flue gas, the cost is reduced, and the result is simple moreover, very easy production.
In order to solve the above problem, the technical scheme of the utility model is that:
a gas on-line monitoring device based on electrochemical sensors comprises a box body and a box cover, wherein the box body is movably connected with the box cover, a sample gas inlet, a first waste liquid outlet and a first tail gas outlet are formed in the box body, and a condenser, a peristaltic pump, a flow limiting pipe, a plurality of electrochemical sensors and a controller are arranged in the box body; the sample gas inlet, the condenser, the flow limiting pipe, the electrochemical sensor and the first tail gas outlet are sequentially connected through a gas pipeline, the front end of the electrochemical sensor is connected with the flow limiting pipe, and the liquid outlet of the condenser is pumped by the peristaltic pump and is connected with the first waste liquid outlet; the controller is electrically connected to the electrochemical sensor.
The utility model relates to a preferred embodiment, set up electrochemistry sensor mount pad and diaphragm pump in the box, electrochemistry sensor mount pad is used for fixing electrochemistry sensor, set up the cavity in the electrochemistry sensor mount pad, it is a plurality of electrochemistry sensor is fixed in the cavity, can design a plurality of electrochemistry sensor installation positions according to the demand on the electrochemistry sensor mount pad, fix electrochemistry sensor in the cavity to satisfy the multiple gas of simultaneous monitoring, set up gas inlet and gas outlet on the electrochemistry sensor, the diaphragm pump passes through the current-limiting tube is connected gas inlet, the gas of diaphragm pump extraction is deposited in the cavity.
The utility model relates to a preferred embodiment, be provided with temperature sensor on the electrochemical sensor mount pad, temperature sensor is used for the monitoring temperature in the box.
The utility model relates to a preferred embodiment, the condenser with still be provided with the dehumidification filter between the diaphragm pump, still set up second waste liquid outlet on the box, the waste liquid of dehumidification filter is connected second waste liquid outlet.
The utility model relates to a preferred embodiment, still set up second exhaust outlet on the box, the diaphragm pump with set up the cross valve between the current-limiting pipe, second exhaust outlet and manometer are connected respectively to the other both ends of cross valve, set up the needle valve on the second exhaust outlet front end.
The utility model relates to a preferred embodiment still sets up the mark gas import on the box, mark gas import department sets up first stop valve, first stop valve passes through three-way valve connection dehumidification filter, the second stop valve is connected to the other end of three-way valve, the second stop valve with the condenser is connected, first stop valve with the second stop valve all with controller signal connection.
The utility model relates to a preferred embodiment, be equipped with a display screen on the case lid, the display screen with the controller electricity is connected for show gaseous on-line monitoring information and trigger valve control signal send command.
The utility model relates to a preferred embodiment, still set up the radiator in the box for air convection and normal atmospheric temperature environment in the assurance box.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art and have following advantage and positive effect:
the utility model adopts the electrochemical sensor to monitor the concentration of the flue gas, and adopts the condenser to realize the cooling treatment of the flue gas before the analysis of the electrochemical sensor, adopts the peristaltic pump to extract the water condensed by the condenser, realizes the effluent treatment, and sets the flow limiting pipe at the front end of the flue gas entering the electrochemical sensor to limit the flow, thereby realizing the pressure stabilizing treatment; meanwhile, a plurality of electrochemical sensors can be arranged in the box body, and various gases can be monitored simultaneously. Therefore, compared with the existing analytical instrument based on the NDIR infrared principle or the ultraviolet differential spectrum absorption method, the online monitoring of the flue gas is also realized, the cost is greatly reduced, and the device is better produced compared with the existing analytical instrument, thereby bringing good news to boiler manufacturers with smaller production scale.
The utility model provides an on-line monitoring device can not only monitor the boiler flue gas, is applicable to the on-line monitoring of other costing gas equally.
Drawings
Fig. 1 is a schematic structural diagram of an electrochemical sensor-based gas online monitoring device of the present invention;
FIG. 2 is an exploded view of the structure of the electrochemical sensor mount;
fig. 3 is a gas flow diagram based on an electrochemical sensor according to the present invention.
Description of reference numerals: 1-a box body; 2-box cover; 3-sample gas inlet; 4-a first tail gas outlet; 5-a second tail gas outlet; 6-a first waste liquid outlet; 7-a second waste liquid outlet; 8-a condenser; 9-a peristaltic pump; 10-a current limiting pipe; 11-an electrochemical sensor; 12-a controller; 13-an electrochemical sensor mount; 1301-a gas inlet; 1302-a gas outlet; 1303-mounting holes; 14-a sealing ring; 15-a fixing member; 16-a PCB board; 17-PCB board protective housing; 18-a temperature sensor; 19-a diaphragm pump; 20-needle valve; 21-pressure gauge; 22-standard gas inlet; 23-a first shut-off valve; 24-a second stop valve; 25-a display screen; 26-dehumidification filter.
Detailed Description
The present invention provides an on-line gas monitoring device based on an electrochemical sensor, which is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims.
Referring to fig. 1 and 3, in the present embodiment, an electrochemical sensor-based gas on-line monitoring device is used for monitoring boiler flue gas, but the device is also suitable for monitoring other gases. The device comprises a box body 1 and a box cover 2, wherein the box body 1 and the box cover 2 are hinged, a support is arranged on the side surface of the box body 1 and used for hanging the device on a boiler accessory, a sample gas inlet 3, a first waste liquid outlet 6 and a first tail gas outlet 4 are arranged on the box body 1, and a condenser 8, a peristaltic pump 9, a flow limiting pipe 10, a plurality of electrochemical sensors 11 and a controller 12 are arranged in the box body 1; the sample gas inlet 3, the condenser 8, the flow-limiting pipe 10, the electrochemical sensor 11 and the first tail gas outlet 4 are sequentially connected through a gas pipeline, the front end of the electrochemical sensor 11 is connected with the flow-limiting pipe 10, and the liquid outlet of the condenser 8 is pumped and connected with the first waste liquid outlet 6 through the peristaltic pump 9; the controller 12 is electrically connected to the electrochemical sensor 11.
In the embodiment, an electrochemical sensor 11 is adopted to monitor the concentration of the flue gas, a condenser 8 is adopted to realize flue gas cooling treatment before the electrochemical sensor 11 is analyzed, a peristaltic pump 9 is adopted to pump water condensed by the condenser 8 to realize water removal treatment, and a flow limiting pipe 10 is arranged at the front end of the electrochemical sensor 11, where the flue gas enters, to limit the flow, so as to realize pressure stabilization treatment; meanwhile, a plurality of electrochemical sensors 11 can be arranged in the box body 1, and various gases can be monitored simultaneously. Therefore, compared with the existing analytical instrument based on the NDIR infrared principle or the ultraviolet differential spectrum absorption method, the online monitoring of the flue gas is also realized, the cost is greatly reduced, and the device is better produced compared with the existing analytical instrument, thereby bringing good news to boiler manufacturers with smaller production scale.
In a preferred embodiment, an electrochemical sensor mounting seat 13 and a diaphragm pump 19 are arranged in a box body 1, the electrochemical sensor mounting seat 13 is used for fixing an electrochemical sensor 11, a specific structure of the electrochemical sensor mounting seat 13 is shown in fig. 2, a cavity is arranged in the electrochemical sensor mounting seat 13, a plurality of electrochemical sensors 11 are fixed in the cavity, in specific implementation, a plurality of mounting holes 1303 of the electrochemical sensors 11 can be designed on the electrochemical sensor mounting seat 13 according to requirements, firstly, the rest mounting holes 1303 of a sealing ring 14 are arranged, then, the electrochemical sensors 11 are fixed in the mounting holes 1303, then, a fixing part for fixing the electrochemical sensors 11 is fixed on the electrochemical sensors 11, simultaneously, the sealing of the cavity is met, finally, a PCB board 16 is arranged above the fixing part 15, a PCB board protective shell 17 is further arranged on the PCB board 16, the PCB board 16 is respectively in signal connection with the electrochemical sensors 11, the PCB 16 is used for transmitting the data signal of the electrochemical sensor 11 to the controller 12; the electrochemical sensor 11 is provided with a gas inlet 1301 and a gas outlet 1302, the gas inlet 1301 and the gas outlet 1302 are communicated with the cavity, the diaphragm pump 19 is connected with the gas inlet 1301 through the flow limiting pipe 10, gas pumped by the diaphragm pump 19 is stored in the cavity, and the electrochemical sensor 11 is arranged in the cavity to detect the content of certain gas.
In the preferred embodiment, the electrochemical sensor mount 13 is provided with a temperature sensor 18, and the temperature sensor 18 is used for monitoring the temperature in the case 1.
In the preferred embodiment, a dehumidifying filter 26 is further disposed between the condenser 8 and the diaphragm pump 19 for further dewatering the flue gas, a second waste liquid outlet 7 is further disposed on the box body 1, and the waste liquid of the dehumidifying filter 26 is connected to the second waste liquid outlet 7.
In a preferred embodiment, the box body 1 is further provided with a second exhaust gas outlet 5, a four-way valve is arranged between the diaphragm pump 19 and the flow-limiting pipe 10, the other two ends of the four-way valve are respectively connected with the second exhaust gas outlet 5 and a pressure gauge 21, the front end of the second exhaust gas outlet 5 is provided with a needle valve 20, and the pressure in the gas pipeline is regulated by regulating the opening degree of the needle valve 20 to observe the pressure gauge 21 so as to perform pressure stabilizing treatment.
In a preferred embodiment, the box 1 is further provided with a standard gas inlet 22, a first stop valve 23 is arranged at the standard gas inlet 22, the first stop valve 23 is connected with the dehumidification filter 26 through a three-way valve, the other end of the three-way valve is connected with a second stop valve 24, the second stop valve 24 is connected with the condenser 8, and the first stop valve 23 and the second stop valve 24 are in signal connection with the controller 12. The standard gas is used for standard gas sample introduction and boiler flue gas monitoring, and the standard gas inlet 22 can also be communicated with clean air for cleaning a pipeline, so that the service life of the electrochemical sensor 11 is prolonged; when the device is internally inflated with the standard gas, the first stop valve 23 is opened, and the second stop valve 24 is closed; when the gas is supplied, the second cut valve 24 is opened and the first cut valve 23 is closed.
In the preferred embodiment, a display screen 25 is disposed on the box cover 2, and the display screen 25 is electrically connected to the controller 12 and is used for displaying the gas online monitoring information and triggering the first stop valve 23 and the second stop valve 24 to send a control signal.
The utility model relates to a preferred embodiment, still set up the radiator in the box 1 for guarantee air convection and normal atmospheric temperature environment in the box 1.
Referring to fig. 1 and 3, the working principle is as follows: the controller 12 controls the first stop valve 23 to be closed, the second stop valve 24 to be opened, the sample gas enters the device through the sample gas inlet 3, the temperature is firstly reduced through the condenser 8, the peristaltic pump 9 extracts the waste liquid condensed by the condenser 8, and the waste liquid is removed through the first waste liquid outlet 6; the sample gas after temperature reduction treatment is continuously subjected to secondary water removal treatment in a dehumidifying filter 26, and the waste liquid is removed through a second waste liquid outlet 7; flue gas through second grade dewatering processing is extracted by diaphragm pump 19, the exit linkage cross valve of diaphragm pump 19, manometer 21 is connected to a port of cross valve, needle valve 20 is connected to another port, go out through second tail gas outlet 5, aperture through adjusting needle valve 20, observe manometer 21, the steady voltage that is used for admitting air is handled, current-limiting pipe 10 is connected to last port, the flue gas is to in the cavity of electrochemical sensor mount pad 13, detect through electrochemical sensor 11, detect information and transmit for the receiver through the PCB board, the receiver is connected with the display electricity, detect information and finally show on the display, final appearance gas is gone out through first tail gas outlet 4.
Before the flue gas enters the device, firstly the standard gas enters the device to calibrate the flue gas monitoring system, namely the controller controls the first stop valve to be opened, the second law enforcement to be closed, and the standard gas enters the gas pipeline in the device through the standard gas inlet, and is dewatered through the dehumidifying filter and the like.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, the changes still fall within the scope of the present invention if they fall within the scope of the claims and their equivalents.
Claims (8)
1. The gas online monitoring device based on the electrochemical sensor is characterized by comprising a box body and a box cover, wherein the box body is movably connected with the box cover, a sample gas inlet, a first waste liquid outlet and a first tail gas outlet are formed in the box body, a condenser, a peristaltic pump, a flow limiting pipe, a plurality of electrochemical sensors and a controller are arranged in the box body, the sample gas inlet, the condenser, the flow limiting pipe, the electrochemical sensors and the first tail gas outlet are sequentially connected through a gas pipeline, the front end of each electrochemical sensor is connected with the flow limiting pipe, and a liquid outlet of the condenser is extracted and connected with the first waste liquid outlet through the peristaltic pump; the electrochemical sensor is electrically connected with the controller.
2. The on-line gas monitoring device based on the electrochemical sensor as recited in claim 1, wherein an electrochemical sensor mounting seat and a diaphragm pump are disposed in the box, a cavity is disposed in the electrochemical sensor mounting seat, a plurality of electrochemical sensors are fixed in the cavity, a gas inlet and a gas outlet are disposed on each electrochemical sensor, and the diaphragm pump is connected to the gas inlet through the flow-limiting pipe.
3. The on-line gas monitoring device based on the electrochemical sensor as recited in claim 2, wherein a temperature sensor is disposed on the electrochemical sensor mounting seat, and the temperature sensor is used for monitoring the temperature in the box body.
4. The on-line gas monitoring device based on the electrochemical sensor as recited in claim 2, wherein a dehumidifying filter is further disposed between the condenser and the diaphragm pump, a second waste liquid outlet is further disposed on the box, and waste liquid of the dehumidifying filter is connected to the second waste liquid outlet.
5. The electrochemical sensor-based gas online monitoring device according to claim 2, wherein a second exhaust gas outlet is further arranged on the box body, a four-way valve is arranged between the diaphragm pump and the flow-limiting pipe, the other two ends of the four-way valve are respectively connected with the second exhaust gas outlet and the pressure gauge, and a needle valve is arranged at the front end of the second exhaust gas outlet.
6. The on-line gas monitoring device based on the electrochemical sensor as recited in claim 4, wherein a standard gas inlet is further disposed on the box, a first stop valve is disposed at the standard gas inlet, the first stop valve is connected to the dehumidification filter through a three-way valve, the other end of the three-way valve is connected to a second stop valve, the second stop valve is connected to the condenser, and the first stop valve and the second stop valve are both in signal connection with the controller.
7. The electrochemical sensor-based gas online monitoring device according to any one of claims 1 to 6, wherein a display screen is arranged on the box cover, and the display screen is electrically connected with the controller and is used for displaying gas online monitoring information and triggering a valve control signal to send a command.
8. The on-line gas monitoring device based on the electrochemical sensor as recited in claim 7, wherein a heat sink is further disposed in the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021148623.0U CN212722711U (en) | 2020-06-19 | 2020-06-19 | Gas on-line monitoring device based on electrochemical sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021148623.0U CN212722711U (en) | 2020-06-19 | 2020-06-19 | Gas on-line monitoring device based on electrochemical sensor |
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| Publication Number | Publication Date |
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| CN212722711U true CN212722711U (en) | 2021-03-16 |
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| CN202021148623.0U Active CN212722711U (en) | 2020-06-19 | 2020-06-19 | Gas on-line monitoring device based on electrochemical sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358689A (en) * | 2021-05-28 | 2021-09-07 | 中国核电工程有限公司 | Hydrogen concentration monitoring device, system and method |
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2020
- 2020-06-19 CN CN202021148623.0U patent/CN212722711U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358689A (en) * | 2021-05-28 | 2021-09-07 | 中国核电工程有限公司 | Hydrogen concentration monitoring device, system and method |
| CN113358689B (en) * | 2021-05-28 | 2023-10-24 | 中国核电工程有限公司 | Hydrogen concentration monitoring device, system and method |
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Address after: 310053 Room 301, floor 3, building 3, No. 611, Dongguan Road, Binjiang District, Hangzhou, Zhejiang Province Patentee after: Zhongkong Quanshi Technology (Hangzhou) Co.,Ltd. Address before: 310053 Room B3155, 3rd floor, 368 Liuhe Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG TRACETECH TECHNOLOGY CO.,LTD. |