CN201269860Y - Humidity measurement device in emitted flue gas - Google Patents
Humidity measurement device in emitted flue gas Download PDFInfo
- Publication number
- CN201269860Y CN201269860Y CNU2008201658117U CN200820165811U CN201269860Y CN 201269860 Y CN201269860 Y CN 201269860Y CN U2008201658117 U CNU2008201658117 U CN U2008201658117U CN 200820165811 U CN200820165811 U CN 200820165811U CN 201269860 Y CN201269860 Y CN 201269860Y
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- China
- Prior art keywords
- gas
- flue gas
- humidity
- pretreatment unit
- measurement mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 41
- 239000003546 flue gas Substances 0.000 title claims description 41
- 238000005259 measurement Methods 0.000 title claims description 29
- 238000012360 testing method Methods 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 35
- 229920002521 macromolecule Polymers 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 17
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000003517 fume Substances 0.000 abstract 2
- 238000007781 pre-processing Methods 0.000 abstract 2
- 239000000523 sample Substances 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000012544 monitoring process Methods 0.000 description 7
- 239000000428 dust Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Abstract
The utility model discloses a device for measuring the humility of discharged fume, which comprises a sampling device, a preprocessing device, a heating device and a humility measuring device arranged behind the preprocessing device; the humility device comprises a testing cavity, an analyzing module and a humility sensor arranged in the testing cavity; the output end of the humility sensor is connected with the analyzing module; and the heating device matches with the testing cavity. The device for measuring the humility of the discharged fume can effectively prolong the service life of the humility sensor and has the advantages of wide application range, easy installation and maintenance and the like.
Description
Technical field
The utility model relates to gas-monitoring, particularly a kind of measurement mechanism that discharges humidity in the flue gas.
Background technology
In order to monitor the pollutant emission situation of pollution source effectively, many at present employing flue gas discharge continuous monitoring systems go to measure the concentration of harmful gas in the flue, the flow velocity of flue gas, the parameters such as humidity of flue gas, and the described parameter that records delivered to monitoring of environment department, so that take Corresponding Countermeasures according to recording parameter.
In the existing flue gas discharge continuous monitoring system, adopt method on the throne to detect the humidity of flue gas in the flue: humidity sensor is inserted in the tested flue, directly records smoke moisture.Mainly there is following deficiency in this detection method:
1, humidity sensor is fragile, serviceable life is short, cost is high
Environment is abominable in the flue, high dust, severe corrosive, and humidity sensor is fragile;
Be prone to aqueous water in the flue and measure impurity,, when boiler blow-on or blowing out, cause the damage of humidity sensor this moment especially easily as in cogeneration plant;
In order to improve sensor life-time, need to increase the complicacy of probe designs, significantly increased the cost of probe.
2, be of limited application
When dewfall appearred in flue gas in the flue, moisture measurement distortion and humidity sensor were fragile, and therefore the point of application after wet desulphurization or water curtain dedusting can not use;
Be higher than under the situation that the environment for use of humidity sensor requires and use in flue-gas temperature.
3, installation, difficult in maintenance
Need on tested flue, increase thief hole and mounting flange separately, increase the workload of client's input cost and enforcement;
The sampling spot of flue gas discharge continuous monitoring system is usually at the middle part of tested flue such as chimney or higher, and as 40m, the position is higher to patrol and examine and the fault handling difficulty that becomes the daily servicing of humidity sensor.
The utility model content
In order to overcome deficiency of the prior art, the measurement mechanism that the utility model provides a kind of can effectively prolong humidity sensor serviceable life, applied range, installation and maintenance are easy to humidity in the discharging flue gas.
For achieving the above object, the utility model is by the following technical solutions:
A kind of measurement mechanism that discharges humidity in the flue gas, comprise sampler, pretreatment unit, heating arrangement and be arranged on pretreatment unit humidity measuring instrument afterwards, described humidity measuring instrument comprises test chamber, analysis module, pressure transducer, is arranged on the capacitance type humidity sensor in the test chamber, and the output terminal of described capacitance type humidity sensor, pressure transducer connects analysis module; Described heating arrangement cooperates with described test chamber, is used to heat the gas in the test chamber, thereby makes the temperature of described gas be higher than the dew point of moisture.
As preferably, described measurement mechanism also comprises pressure transducer, and the output terminal of pressure transducer connects described analysis module.
As preferably, also comprise gas compartment and gas measurement device, gas compartment is arranged on after the pretreatment unit, and gas measurement device comprises light source, detector and analytical equipment.
As preferably, described humidity sensor is the macromolecule membrane condenser type.
Compared with prior art, the utlity model has following beneficial effect:
1, humidity sensor long service life
Take sampling method: the flue gas of high dust, deep-etching in the sampling flue, to measure through filtering, be incubated the back, the flue gas measurement environment after the processing is good, has prolonged the serviceable life of humidity sensor;
Owing to be the described flue gas of insulation in whole humidity measuring instrument, make the temperature of flue gas be higher than the dew point of water all the time, therefore, there is not aqueous water in the flue gas to be measured, prolonged the serviceable life of humidity sensor.
2, applied range
All the time be higher than the dew point of water owing to guarantee the temperature of flue gas in whole measuring process, so flue gas dewfall can not occur, moisture measurement is accurate, is applicable to various complexity, bad working environments.
3, install, safeguard easily
Need not increases thief hole and mounting flange separately on tested flue, only need to improve on existing flue gas discharge continuous monitoring system to get final product;
Humidity measuring instrument can be arranged on ground, installation, easy to maintenance.
Description of drawings
Fig. 1 is the structural representation that discharges the measurement mechanism of humidity in the flue gas among the embodiment 1;
Fig. 2 is the structural representation that discharges the measurement mechanism of humidity in the flue gas among the embodiment 2.
Embodiment
Following examples have been done further instruction to situations such as structure of the present utility model, function and applications, are several reasonable application forms of the utility model, but scope of the present utility model is not confined to following embodiment.
As shown in Figure 1, a kind of measurement mechanism that discharges humidity in the flue gas, be applied in the flue gas discharge continuous monitoring system of cogeneration plant, be installed on the chimney 1 of cogeneration plant, comprise sampler, pretreatment unit, humidity measuring instrument, heating arrangement, gas compartment 61 and gas measurement device 62.
Sampler comprises sampling probe 2, ejector 8, and described sampling probe 2 is installed on the chimney 1.
Pretreatment unit comprises one-level pretreatment unit 31 and secondary pretreatment unit 32, is used to filter out materials such as dust in flue gas, tar, makes the flue gas cleaning that becomes, and satisfies the needs of measuring.Connect by heat tracing pipe 4 between one-level pretreatment unit 31 and the secondary pretreatment unit 32.
Described humidity measuring instrument comprises test chamber 71, analysis module 73, is arranged on the macromolecule membrane capacitance type humidity sensor 72 in the test chamber, described test chamber is installed in the endpiece of gas compartment 61, and the output terminal of described humidity sensor 72 connects described analysis module 73.
Described ejector 8 is installed in the endpiece of test chamber 71, is used for cooperating the flue gas that takes out in the chimney 1 with described sampling probe 2.
Described heating arrangement is divided into two parts, wherein a part of 5-1 is used to heat described sampling probe 2 and one-level pretreatment unit 31, another part 5-2 is used to heat secondary pretreatment unit 32, gas compartment 61 and test chamber 71, makes the temperature of flue gas and sample gas be higher than the dew point of water all the time.
The course of work of above-mentioned measurement mechanism may further comprise the steps:
A, sampling procedure
B, pre-treatment step
The sampling flue gas through one-level pretreatment unit 31 after, be transported to secondary pretreatment unit 32 by heat tracing pipe 4, heat tracing pipe 3 adopts type of heating to make and inner treats that test sample temperature degree is 140 ℃, is higher than the dew point of water;
Pretreatment unit filters out particles such as dust in flue gas, tar, thereby obtains treating test sample gas; Simultaneously, heating arrangement 5-2 heats described secondary pretreatment unit 32, and making the flue-gas temperature in this device 32 is 180 ℃, is higher than the dew point of water;
C, flue gas to be measured lead in the gas compartment 61
The light that light source sends passes the sample gas in the gas compartment 61, after be detected device and receive, install the parameter that obtains each composition gas in the sample gas after the analysis of 62 inner analysis unit by analysis, as the concentration of oxides of nitrogen, sulphuric dioxide;
The sample gas that flows out from described gas compartment 61 is led in the test chamber 71, and described humidity sensor 72 will record signal and send described analysis module 73, obtains the relative humidity that sample gas is flue gas in the chimney 1 after by analysis;
Described heating arrangement 5-2 heats described gas compartment 61 and test chamber 71, and what make inside treats that test sample temperature degree is 145 ℃, is higher than the dew point of water.
Embodiment 2:
As shown in Figure 2, a kind of measurement mechanism that discharges humidity in the flue gas, as different from Example 1:
1, removes the secondary pretreatment unit.
2, described test chamber 71 is arranged between one-level pretreatment unit 31 and the gas compartment 61, and entrance point is connected with one-level pretreatment unit 31.
3, heat tracing pipe no longer is set, but sampling probe 2, one-level pretreatment unit 31, gas compartment 61, test chamber 71 are arranged in the heating arrangement 5.
4, analysis module 73 is set no longer separately, but with humidity sensor 72 record supply gas analytic unit in the fluid measurement device 62 of signal, and obtain the humidity of flue gas after handling by this analytic unit.
5, pressure transducer 74 is arranged on the gas piping between test chamber 71 and the gas compartment 61.
The course of work of above-mentioned measurement mechanism, as different from Example 1:
1, the flue gas in the sampling probe 2 sampling chimneys 1 is transported in the one-level pretreatment unit 31 afterwards.
2, humidity sensor 72, pressure transducer 74 will record supply gas analytic unit in the fluid measurement device 62 of signal, obtain the absolute humidity of flue gas after this analytic unit analysis.
Above-mentioned embodiment should not be construed as the restriction to the utility model protection domain.Under the situation that does not break away from the utility model spirit, any type of change that the utility model is made all should fall within the protection domain of the present utility model.
Claims (4)
1, a kind of measurement mechanism that discharges humidity in the flue gas, comprise sampler, pretreatment unit, heating arrangement and be arranged on pretreatment unit humidity measuring instrument afterwards, described humidity measuring instrument comprises test chamber, analysis module, is arranged on the humidity sensor in the test chamber, and the output terminal of described humidity sensor connects analysis module; Described heating arrangement cooperates with described test chamber.
2, measurement mechanism according to claim 1 is characterized in that: described measurement mechanism also comprises pressure transducer, and the output terminal of pressure transducer connects described analysis module.
3, measurement mechanism according to claim 1 and 2 is characterized in that: also include gas compartment and gas measurement device, gas compartment is arranged on after the pretreatment unit, and gas measurement device comprises light source, detector and analytical equipment.
4, measurement mechanism according to claim 1 and 2 is characterized in that: described humidity sensor is the macromolecule membrane condenser type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201658117U CN201269860Y (en) | 2008-10-09 | 2008-10-09 | Humidity measurement device in emitted flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201658117U CN201269860Y (en) | 2008-10-09 | 2008-10-09 | Humidity measurement device in emitted flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201269860Y true CN201269860Y (en) | 2009-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201658117U Expired - Fee Related CN201269860Y (en) | 2008-10-09 | 2008-10-09 | Humidity measurement device in emitted flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201269860Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106461591A (en) * | 2014-06-25 | 2017-02-22 | 罗伯特·博世有限公司 | Measuring device, especially moisture measuring device |
| CN112403044A (en) * | 2020-11-27 | 2021-02-26 | 鄂尔多斯市中钰泰德煤炭有限公司 | Efficient and continuous intelligent coal slurry on-line monitoring control method |
-
2008
- 2008-10-09 CN CNU2008201658117U patent/CN201269860Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106461591A (en) * | 2014-06-25 | 2017-02-22 | 罗伯特·博世有限公司 | Measuring device, especially moisture measuring device |
| US10261040B2 (en) | 2014-06-25 | 2019-04-16 | Robert Bosch Gmbh | Measuring device, especially moisture measuring device |
| CN106461591B (en) * | 2014-06-25 | 2020-07-03 | 罗伯特·博世有限公司 | Measuring device, especially humidity measuring device |
| CN112403044A (en) * | 2020-11-27 | 2021-02-26 | 鄂尔多斯市中钰泰德煤炭有限公司 | Efficient and continuous intelligent coal slurry on-line monitoring control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FOCUSED PHOTONICS (HANGZHOU), LTD. Free format text: FORMER NAME: JUGUANG SCIENCE AND TECHNOLOGY (HANGZHOU) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Hangzhou City, Zhejiang province Binjiang District 310052 shore road 760 Patentee after: Focused Photonics (Hangzhou) Inc. Patentee after: Hangzhou Juguang Environmental Protection Technology Co.,Ltd. Address before: Hangzhou City, Zhejiang province Binjiang District 310052 shore road 760 Patentee before: Juguang Sci. & Tech. (Hangzhou) Co., Ltd. Patentee before: Hangzhou Juguang Environmental Protection Technology Co.,Ltd. |
|
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Han Shuanglai Inventor after: Ma Jianzhou Inventor after: Li Yuhui Inventor before: Han Shuanglai Inventor before: Ma Jianzhou Inventor before: Li Yuhui |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20121009 |