CN206756533U - A kind of flue gas sampler - Google Patents
A kind of flue gas sampler Download PDFInfo
- Publication number
- CN206756533U CN206756533U CN201720505658.7U CN201720505658U CN206756533U CN 206756533 U CN206756533 U CN 206756533U CN 201720505658 U CN201720505658 U CN 201720505658U CN 206756533 U CN206756533 U CN 206756533U
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- China
- Prior art keywords
- sampling
- flue gas
- inserting tube
- flue
- temperature
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000003546 flue gas Substances 0.000 title claims abstract description 47
- 238000005070 sampling Methods 0.000 claims abstract description 107
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 239000007789 gas Substances 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 239000003500 flue dust Substances 0.000 claims abstract description 5
- 239000000779 smoke Substances 0.000 claims abstract description 5
- 230000003750 conditioning effect Effects 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000012952 Resampling Methods 0.000 claims 1
- 239000000523 sample Substances 0.000 description 17
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Abstract
The utility model discloses a kind of flue gas sampler, including sampling inserting tube, sampling cavity, upsampling filter, heater, backflush unit；Sampling inserting tube is arranged on the front end of flue gas sampler, and one end is inserted in flue, and the other end connects with sampling cavity, for sample gas to be collected into sampling cavity body；Heater includes heating rod and heating jacket；Heating rod is arranged in sampling cavity body, to carrying out heating and thermal insulation in sampling cavity body；Heating jacket is arranged on outside the sampling inserting tube being connected with flue, is carried out heating and thermal insulation to sampling inserting tube, is prevented flue gas from being condensed before sampling cavity is entered；Upsampling filter is arranged in sampling cavity body, is carried out filtrating smoke dust to sample gas, is prevented dust from entering inside analysis system；Backflush unit periodically carries out blowback to sampling inserting tube and upsampling filter, prevents that flue dust from blocking sampling inserting tube, upsampling filter causes flue gas sampling airway blockage.
Description
Technical field
It the utility model is related to a kind of flue gas sampler, and in particular to a kind of superhigh temperature, low-loss flue gas sampling dress
Put, belong to coal-fired, the continuous on-line monitoring system field of combustion turbine group flue gas.
Background technology
Existing sampling apparatus running temperature is low（120℃-150℃）So that flue gas sampling inside cavity and with companion
Heat pipe connecting portion condenses into water to the cold, absorbs substantial amounts of SO2；Sampling apparatus is connected with walling of flue by flange sleeve, connection
The sleeve at position is exposed outside, and traditional method is simply incubated with insulation material, though effective unobvious, absorption tower
A large amount of mud are mixed with the high-humidity gas fume taken out of, are condensed to the cold when sampling inserting tube by this section, equipment is easily caused and blocks, be rotten
Erosion.
Current most of coal unit has completed minimum discharge transformation, and Air Pollutant Emission concentration basically reaches combustion gas wheel
Unit emission limit（I.e. under the conditions of benchmark oxygen content 6%, particulate matter, sulfur dioxide, discharged nitrous oxides concentration be not high respectively
In 10,35,50 milligrams/cubic metre）.Concentration of emission limit value is greatly reduced before relatively transforming.Somewhat SO2 absorption, measures number
According to very large deviation will be produced, each sample unit is necessarily required to be in the condition of high temperature in order to reduce loss；Sample inserting tube simultaneously
Need to be heated, it is ensured that do not condense positioned at flue and the flue gas of flange coupling part in feeler lever, while increase the blowback of system
Time and frequency.
Utility model content
Purpose of utility model：For above-mentioned deficiency of the prior art, the utility model provides a kind of flue gas sampler.
Technical scheme：In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of flue gas sampler, it is characterised in that：Including sampling inserting tube, sampling cavity, upsampling filter, heating dress
Put, backflush unit；
Sampling inserting tube is arranged on the front end of flue gas sampler, and one end is inserted in flue, and the other end connects with sampling cavity,
For sample gas to be collected into sampling cavity body；
Heater includes heating rod and heating jacket；Heating rod is arranged in sampling cavity body, to being carried out in sampling cavity body
Heating and thermal insulation；Heating jacket is arranged on outside the sampling inserting tube being connected with flue, is carried out heating and thermal insulation to sampling inserting tube, is prevented flue gas
Condensed before sampling cavity is entered；
Upsampling filter is arranged in sampling cavity body, is carried out filtrating smoke dust to sample gas, is prevented dust from entering in analysis system
Portion；
Backflush unit periodically carries out blowback to sampling inserting tube and upsampling filter, prevents flue dust from blocking sampling inserting tube, sampling
Filter causes flue gas sampling airway blockage.
Preferably, described flue gas sampler, it is characterised in that：The upsampling filter is ceramic or stainless
Steel upsampling filter.
Preferably, described flue gas sampler, it is characterised in that：Also include flange sleeve, the sampling is visited
Pipe is connected by flange sleeve with sampling cavity body phase.
Preferably, described flue gas sampler, it is characterised in that：Flue gas sampler touches equipped with temperature alarming
Point, when sampler temperature is more or less than setting limit value, triggering alarm, system can stop sampling.
Preferably, described flue gas sampler, it is characterised in that：Also include temperature sensor, the temperature
Sensor is arranged on above sampling inside cavity, using PT100 temperature sensors.
Preferably, described flue gas sampler, it is characterised in that：Also include temperature conditioning unit, heater with
Temperature conditioning unit connects, by the temperature of temperature conditioning unit control heater regulation sampling inside cavity.
Preferably, described flue gas sampler, it is characterised in that：The material of the sampling inserting tube is stainless steel
Pipe.Beneficial effect：
A kind of flue gas sampler provided by the utility model, there is advantages below：
1.200 DEG C of unique design uses of gas sampling probe can apply to various working condition；
2. a variety of sampling pipes and upsampling filter can be supported the use（Ceramics are standard type）, have great filter area and
Capacity, system have good air-tightness, and instrument need not be used when changing filtration core, and need not pull down probe and probe tube
Line, greatly reduce maintenance workload；
3. the subsidiary special heater of gas sampling probe can heat to whole cavity, temperature control is by temperature control
Device and PT-100 RTD combination processed is completed；
4. reliable, the response time is rapid；
It is 5. convenient for installation and maintenance.
Brief description of the drawings
Fig. 1 is the utility model principle schematic diagram；
Fig. 2 and Fig. 3 is structure structure chart of the present utility model.
In figure：It is temperature sensor 1, heating rod 2, temperature conditioning unit 3, solid-state relay 4, sampling inserting tube 5, heating jacket 6, anti-
Blow bellows 7, sampling cavity 8, upsampling filter 9.
Embodiment
The utility model is further described with reference to specific embodiment.
As shown in Figure 1 to Figure 3, be a kind of flue gas sampler of the utility model, including sampling inserting tube 5, sampling cavity 8,
Upsampling filter 9, heater, backflush unit；
Sampling inserting tube is arranged on the front end of flue gas sampler, and one end is inserted in flue, and the other end connects with sampling cavity,
For collecting sample gas in sampling cavity body；
Heater includes heating rod and heating jacket；Heating rod is arranged in sampling cavity body, to being carried out in sampling cavity body
Heating and thermal insulation；Heater in complete equipment and sampling cavity body to carrying out heating and thermal insulation；
Upsampling filter is arranged in sampling cavity body, is carried out filtrating smoke dust to sample gas, is prevented dust from entering in analysis system
Portion；
Backflush unit periodically carries out blowback to sampling inserting tube and upsampling filter, prevents flue dust from blocking sampling inserting tube, sampling
Filter causes flue gas sampling airway blockage.
The upsampling filter is generally 2 μm for ceramics or stainless steel upsampling filter, filtering accuracy.
Flange sleeve is provided with outside flue, a heating jacket is set outside the sampling inserting tube being connected with flue, sampling is visited
Pipe carries out heating and thermal insulation, prevents the flue gas of high temperature from being condensed before sampler is entered.
Flue gas sampler is furnished with a secondary low-temperature warning contact, when sampler temperature is high/low in setting limit value（5℃）When,
Triggering alarm, system can stop sampling.
As shown in Figures 2 and 3, the flue gas sampler of the present embodiment, including temperature sensor 1, heating rod 2, temperature control list
Member 3, solid-state relay 4, sampling inserting tube 5, heating jacket 6, blowback bellows 7, sampling cavity 8, upsampling filter 9.
The front end of flue gas sampler is a SS316 stainless steels sampling inserting tube 5, and sampling inserting tube is by thread forms with adopting
Sampling device body flange sleeve connection, general length are 1.5 meters or so（Specific length is determined according to the size of flue）, it is ensured that system
The sample collected is flue gas in the middle part of flue；Heating jacket 6 is set in outside sampling inserting tube, passes through flange method and sampling apparatus
Body connects, and the main function of heating jacket 6 is to prevent the flue gas condensing condensation in the exposed sampling inserting tube outside flue, and it is powered
Equally to be controlled to the heating power supply for sampling cavity, heating-up temperature at 150 DEG C.Sampling inserting tube 5 be made up of stainless steel tube, one end with
Sampling cavity 8 connects, and in other end insertion flue, the flue-gas temperature that general wet desulphurization comes out is at 50 DEG C or so, and humidity is 13%
Left and right, for prevent the flue gas of high temperature enter sampler before condense, only to flue outside flange sleeve carry out insulation be it is inadequate,
Still need to increase a heating jacket 6, this section of sampling inserting tube is heated, heating jacket 6 and the heating rod 2 in sampling cavity body
Public power supply all the way.
Sample gas is pooled in sampling cavity 8 by sampling inserting tube 5, by heating and thermal insulation and the filtering dust of upsampling filter 9
Heated sampling line enters analysis system rack again afterwards.
Upsampling filter 9 carries out filtrating smoke dust to sample gas, prevents dust from entering inside analysis system.
Backflush unit periodically carries out blowback to sampling inserting tube and upsampling filter 9, prevents flue dust from blocking sample gas sampling and visiting
Pipe, filter cause flue gas sampling airway blockage.Blowback source of the gas typically supplies compressed air for instrument using factory, passes through solenoid valve control
The break-make of purge gas, blowback are realized by impulse form, that is, are blown and stopped within 1 second 1 second, and another blow-through is swept 30 seconds after continuing 30 seconds, is
Ensure that blowback air is dried, gas is preheated by one section of blowback bellows 7 before cavity 8 entering to sample, it is ensured that is blown into
Gas in be not in aqueous water.During sampling apparatus blowback, in order to prevent from producing dust, spot in purge with heat tracing
Pipe brings pretreatment system into, the electromagnetism valve events in blowback, drives pneumatic operated valve work, and cut-out sample gas enters analysis system.
Sampling apparatus is integrally heated by temperature conditioning unit 3 to control, and temperature sensor 1 is arranged on above sampling cavity, is adopted
With PT100, signal is linked into inside temperature conditioning unit, is monitored in real time, and temperature conditioning unit is according to inner setting parameter and sampling cavity
The real time temperature of body exports the break-make of 24V power supplies solid-state relay 4, so as to controlling the power supply of heating rod 2.In sampling cavity
The both sides of body are heated to complete equipment simultaneously equipped with two heating rods 2, and the PID modules carried by temperature conditioning unit 3 are carried out
Regulation, controls error ± 3 DEG C, and the temperature of heating rod is set in 180 DEG C（Reach as high as 220 DEG C）, and set low-temperature warning limit value
（Less than 5 DEG C of design temperature）.The actual temperature and design temperature of sampler are simultaneously displayed on temperature conditioning unit.Sampling apparatus
Wrapped up inside cover with insulation material, it is ensured that internal insulation.
During sampling apparatus long-play, it is understood that there may be the problem of blocking.Ordinary circumstance uses compressed air for instrument
（0.5MPa）As source of the gas, impulse blowing mode carries out regular purge to sampling probe upsampling filter.
Described above is only preferred embodiment of the present utility model, it should be pointed out that：For the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (7)
- A kind of 1. flue gas sampler, it is characterised in that：Including sampling inserting tube, sampling cavity, upsampling filter, heater, Backflush unit；Sampling inserting tube is arranged on the front end of flue gas sampler, and one end is inserted in flue, and the other end connects with sampling cavity, is used for Sample gas is collected into sampling cavity body；Heater includes heating rod and heating jacket；Heating rod is arranged in sampling cavity body, to being heated in sampling cavity body Insulation；Heating jacket is arranged on outside the sampling inserting tube being connected with flue, is carried out heating and thermal insulation to sampling inserting tube, is prevented flue gas from entering Condensed before entering to sample cavity；Upsampling filter is arranged in sampling cavity body, is carried out filtrating smoke dust to sample gas, is prevented dust from entering inside analysis system；Backflush unit periodically carries out blowback to sampling inserting tube and upsampling filter, prevents flue dust from blocking sampling inserting tube, resampling filter Device causes flue gas sampling airway blockage.
- 2. flue gas sampler according to claim 1, it is characterised in that：The upsampling filter is ceramics or stainless steel Upsampling filter.
- 3. flue gas sampler according to claim 1, it is characterised in that：Also include flange sleeve, the sampling inserting tube Connected by flange sleeve with sampling cavity body phase.
- 4. flue gas sampler according to claim 1, it is characterised in that：Flue gas sampler touches equipped with temperature alarming Point, when sampler temperature is more or less than setting limit value, triggering alarm, system can stop sampling.
- 5. flue gas sampler according to claim 1, it is characterised in that：Also include temperature sensor, the temperature passes Sensor is arranged on above sampling inside cavity, using PT100 temperature sensors.
- 6. flue gas sampler according to claim 1, it is characterised in that：Also include temperature conditioning unit, heater and temperature Unit connection is controlled, by the temperature of temperature conditioning unit control heater regulation sampling inside cavity.
- 7. flue gas sampler according to claim 1, it is characterised in that：The material of the sampling inserting tube is stainless steel Pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720505658.7U CN206756533U (en) | 2017-05-08 | 2017-05-08 | A kind of flue gas sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720505658.7U CN206756533U (en) | 2017-05-08 | 2017-05-08 | A kind of flue gas sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206756533U true CN206756533U (en) | 2017-12-15 |
Family
ID=60617649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720505658.7U Active CN206756533U (en) | 2017-05-08 | 2017-05-08 | A kind of flue gas sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206756533U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374360A (en) * | 2018-12-11 | 2019-02-22 | 苏州曼德克光电有限公司 | A kind of smoke sampling heating feeler lever |
| CN112378712A (en) * | 2020-10-26 | 2021-02-19 | 江苏方天电力技术有限公司 | Flue gas mixing and sampling device |
| CN113358423A (en) * | 2021-05-20 | 2021-09-07 | 合肥学院 | Quasi-continuous environment atmospheric gas sampling device |
| CN114894558A (en) * | 2022-07-11 | 2022-08-12 | 南京霍普斯科技有限公司 | High-temperature explosion-proof sampling probe |
-
2017
- 2017-05-08 CN CN201720505658.7U patent/CN206756533U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374360A (en) * | 2018-12-11 | 2019-02-22 | 苏州曼德克光电有限公司 | A kind of smoke sampling heating feeler lever |
| CN112378712A (en) * | 2020-10-26 | 2021-02-19 | 江苏方天电力技术有限公司 | Flue gas mixing and sampling device |
| CN113358423A (en) * | 2021-05-20 | 2021-09-07 | 合肥学院 | Quasi-continuous environment atmospheric gas sampling device |
| CN114894558A (en) * | 2022-07-11 | 2022-08-12 | 南京霍普斯科技有限公司 | High-temperature explosion-proof sampling probe |
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