CN212059566U - Flue gas multipoint sampling device - Google Patents
Flue gas multipoint sampling device Download PDFInfo
- Publication number
- CN212059566U CN212059566U CN201921570800.1U CN201921570800U CN212059566U CN 212059566 U CN212059566 U CN 212059566U CN 201921570800 U CN201921570800 U CN 201921570800U CN 212059566 U CN212059566 U CN 212059566U
- Authority
- CN
- China
- Prior art keywords
- sampling
- pipe
- branch
- flue gas
- branch pipe
- 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.)
- Active
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a flue gas multiple spot sampling device. The device is used for being arranged on a flue at the outlet of a denitration reactor of a power plant and comprises a plurality of sampling guns, a heat-preservation sampling pipeline made of 316L materials, a 316L material mixing tank and a large-caliber pneumatic element for providing sampling power; the plurality of sampling guns are sequentially arranged on a plurality of different positions of the flue, and each position corresponds to one sampling gun; flue gas that a plurality of sampling guns gathered passes through the heat preservation sampling pipeline of 316L material, gets into 316L material blending tank after converging through the female pipe of mixing of 316L material again. The utility model has the advantages of uniform sampling; the large flow sampling is carried out, and the measured substances are not easy to adsorb and react; the flow change of each point sampling is automatically identified, and the back-blowing cleaning is automatically realized.
Description
Technical Field
The utility model relates to a flue gas multiple spot sampling device. More specifically, the utility model relates to a be used for flue gas denitration reactor export multipoint sampling device.
Background
Currently, the power plant denitration reactor outlets NOx and NH3The monitoring adopts single-point sampling, but is limited by the design of an outlet field and an integral process of the denitration reactor, and the stability of a flow field of a monitoring point and the uniformity of smoke components are difficult to ensure, so that the monitoring cannot be realizedThe concentration of the measured component is actually monitored.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flue gas multiple spot sampling device, the device are used for flue gas denitration reactor export multiple spot sampling, solve at least above-mentioned problem and/or defect.
A multipoint sampling device is arranged on a flue at an outlet of a denitration reactor of a power plant and comprises a plurality of sampling guns, a 316L heat-preservation sampling pipeline, a 316L mixing tank and a large-caliber pneumatic element for providing sampling power; the plurality of sampling guns are sequentially arranged on a plurality of different positions of the flue, and each position corresponds to one sampling gun; flue gas that a plurality of sampling guns gathered passes through the heat preservation sampling pipeline of 316L material, gets into 316L material blending tank after converging through the female pipe of mixing of 316L material again.
Preferably, the system also comprises a monitoring system, wherein the monitoring system comprises a temperature sensor arranged on the sampling gun, a regulating valve for regulating the flow, an electric actuator for realizing purging, a CEMS (continuous emission monitoring System) equipment probe arranged on the mixing tank and NH (hydrogen) measurement3Equipment; the monitoring system is used for monitoring and judging the flow change of each path, automatically identifying the sampling condition of each path, automatically cleaning and maintaining according to the airflow change of each path, transmitting a maintenance signal to the CEMS and measuring NH3An apparatus.
Preferably, the working power supply of the sampling device is: 220ACV, 800W; a working air source: more than or equal to 0.5Mpa and 500L/min of compressed air for instruments.
Preferably, the sampling gun comprises a manual ball valve, a PT100 temperature measuring resistor, an electric ball valve, a sampling tube and a heat-preservation cover; the manual ball valve and the electric ball valve are respectively arranged on two branch pipelines communicated with the sampling pipe; a plurality of sampling ports are arranged on the sampling tube. The sampling gun is provided with a temperature sensor for monitoring temperature difference, a regulating valve for regulating flow and an electric actuator for realizing purging, and the purging does not need air supply.
Preferably, the heat preservation cover is a detachable heat preservation cover.
Preferably, the inner part of the flue of the sampling gun is processed by corundum which is wear-resistant, corrosion-resistant and high-temperature-resistant. The temperature sensor for monitoring the temperature difference, the regulating valve for regulating the flow and the electric actuator for realizing purging are all high-temperature-resistant and wear-resistant devices made of materials.
Preferably, the mixing main pipe comprises a Y-shaped pipe and a Y-shaped pipe, and the Y-shaped pipe comprises a first branch pipe, a second branch pipe and a branch collecting pipe; the pipe comprises a branch collecting pipe socket part, a third branch pipe, a fourth branch pipe and a total collecting pipe; the first branch pipe and the second branch pipe are connected and extend forwards to form the branch collecting pipe after being connected; the third branch pipe and the fourth branch pipe are connected and extend forwards to form the main collecting pipe after being connected; the branch collecting pipe socket part is arranged at the junction of the third branch pipe and the fourth branch pipe and used for installing the branch collecting pipe.
Preferably, the pipe wall of the branch collecting pipe is further provided with a limiting part.
Preferably, the connecting ends of the main collecting pipe, the third branch pipe and the fourth branch pipe are also provided with an expansion part.
Preferably, the cavity corresponding to the enlarged part is spherical, and two ends of the cavity are respectively communicated with the main manifold and the junction of the third branch pipe and the fourth branch pipe.
According to the technical scheme, the utility model has the advantages of uniform sampling; the large flow sampling is carried out, and the measured substances are not easy to adsorb and react; the flow change of each point sampling is automatically identified, and the back-blowing cleaning is automatically realized.
Drawings
In order to more clearly illustrate the solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.
Fig. 1 is an overall configuration diagram of a multipoint sampling system.
Fig. 2 is a structural view of a mixing tank.
Fig. 3 is a partially enlarged view of fig. 2.
Wherein A is a sampling gun, B is a heat preservation sampling pipeline made of 316L material, C is a 316L material mixing tank (CEMS sampling place), D is a power source, E is a control system, F is an upstream pipeline, and G is a downstream pipeline.
1-Y type pipe, 2-type pipe, 11-first branch pipe, 12-second branch pipe, 13-branch collecting pipe, 20-branch collecting pipe socket part, 21-third branch pipe, 24-total collecting pipe and 131-limiting part.
Detailed Description
The utility model discloses a flue gas multiple spot sampling device.
The technical solution in the examples of the present invention is clearly and completely described below with reference to the drawings in the examples of the present invention.
As shown in figure 1, according to the width of the actual flue cross-section of the outlet of the denitration reactor of the power plant, a set of multi-point sampling device is provided with N sampling guns A, the flue gas collected by the N sampling guns A passes through a heat preservation sampling pipeline B made of 316L material, enters a 316L material mixing tank C through a mixing main pipe made of 316L material, and is sent back to a downstream pipeline G by detected gas after being detected. The whole set of device provides sampling power by a specially processed large-caliber pneumatic element D made of high-temperature-resistant and wear-resistant materials. And monitoring and judging the change of each sampling flow path through a control system E, and controlling automatic cleaning and maintenance.
1. A sampling gun A, wherein N sampling guns are configured according to the width of the actual flue section of the power plant and are arranged in an upstream pipeline F; the inner part of the flue of the sampling gun is processed by special corundum which is wear-resistant, corrosion-resistant and high-temperature-resistant, and each sampling gun is provided with three sampling holes; the sampling gun is provided with a temperature sensor for monitoring temperature difference, a regulating valve for regulating flow and an electric actuator for realizing purging, the temperature sensor, the regulating valve and the electric actuator are all high-temperature-resistant and wear-resistant material equipment, and gas source supply is not required for purging.
2. A heat preservation sampling pipeline B, wherein the sampling pipeline is made of 316L materials;
3. a mixing tank C, wherein the mixing tank device is made of 316L materials, collects and mixes the samples collected by the N-way sampling gun together for the analysis of the CEMS equipment, and is provided with a plurality of connecting ports for installing a probe of the CEMS equipment and measuring NH3Equipment;
4. the power source D is a vacuum power source which is a large-caliber pneumatic element which is specially processed and is high-temperature-resistant and wear-resistant, can generate vacuum above-20 KPa, provides sampling power for the whole multipoint sampling system, can reliably run under high temperature and high dust, and has a working air source of 500L/min
5. A control system E: the function of the device is mainly to monitor and judge the flow change of each path, automatically identify the sampling condition of each path, automatically clean and maintain according to the airflow change of each path, and transmit the maintenance signal to devices such as CEMS. The control system can also perform manual purging and standard inspection.
6. The operation conditions are as follows: 1. a working power supply: 220ACV, 800W; 2. a working air source: more than or equal to 0.5Mpa and 500L/min of compressed air for instruments; 3. pre-embedding a flange in a flue: sampling guns (N) and power source discharge into 1 of flue flanges, total quantity N +1, all flange sizes are DN 100.
As shown in fig. 2 and 3, the mixing main pipe comprises a Y-pipe 1 and a Y-pipe 2, the Y-pipe 1 comprising a first branch pipe 11, a second branch pipe 12 and a branch collecting pipe 13; the tube 2 comprises a branch collecting pipe socket part 20, a third branch pipe 21, a fourth branch pipe 22 and a main collecting pipe 24; the first branch pipe 11 and the second branch pipe 12 are connected and extend forwards to form the branch collecting pipe 13 after being connected; the third branch pipe 21 and the fourth branch pipe 22 are connected and extend forwards to form the main junction pipe 24; the branch collecting pipe socket part 20 is arranged at the junction of the third branch pipe 21 and the fourth branch pipe 22 and is used for installing the branch collecting pipe 13. The pipe wall of the branch collecting pipe 13 is also provided with a limiting part 131. The connecting ends of the main collecting pipe 24, the third branch pipe 21 and the fourth branch pipe 22 are also provided with an expansion part 23. The cavity corresponding to the expansion part 23 is spherical, and two ends of the cavity are respectively communicated with the main junction pipe 24 and the junction of the third branch pipe 21 and the fourth branch pipe 22. As can be seen in fig. 2, after the end of the branch manifold 13 is inserted into the branch manifold socket 20, it extends a distance, the distance is present, the outlet of the first branch pipe 11 and the outlet of the second branch pipe 12 are limited, and since the end of the branch manifold 13 is not flat, it is a bevel, the bevel makes the outlet of the first branch pipe 11 and the outlet of the second branch pipe 12 have different sizes, so that the gas flow rate discharged into the tube 2 from the first branch pipe 11 and the second branch pipe 12 has obvious difference, and in addition, the tube 2 is further provided with a bulge 23, so that the gas obtained from the four branch pipes has a diversion and local backflow function after entering the bulge, and finally, the effect of fully mixing is achieved.
Claims (10)
1. The utility model provides a flue gas multiple spot sampling device for the setting is on the flue of denitration reactor export of power plant, its characterized in that: the system comprises a plurality of sampling guns, a heat-preservation sampling pipeline made of 316L materials, a 316L material mixing tank and a large-caliber pneumatic element for providing sampling power; the plurality of sampling guns are sequentially arranged on a plurality of different positions of the flue, and each position corresponds to one sampling gun; flue gas that a plurality of sampling guns gathered passes through the heat preservation sampling pipeline of 316L material, gets into 316L material blending tank after converging through the female pipe of mixing of 316L material again.
2. The multipoint flue gas sampling device of claim 1, wherein: the system also comprises a monitoring system, wherein the monitoring system comprises a temperature sensor arranged on the sampling gun, a regulating valve for regulating flow, an electric actuator for realizing purging, a CEMS equipment probe arranged on the mixing tank and an NH detector3Equipment; the monitoring system is used for monitoring and judging the flow change of each path, automatically identifying the sampling condition of each path, automatically cleaning and maintaining according to the airflow change of each path, transmitting a maintenance signal to the CEMS and measuring NH3An apparatus.
3. The multipoint flue gas sampling device of claim 1, wherein: the working power supply of the sampling device is as follows: 220ACV, 800W; a working air source: more than or equal to 0.5Mpa and 500L/min of compressed air for instruments.
4. The multipoint flue gas sampling device of claim 1, wherein: the sampling gun comprises a manual ball valve, a PT100 temperature measuring resistor, an electric ball valve, a sampling tube and a heat-insulating cover; the manual ball valve and the electric ball valve are respectively arranged on two branch pipelines communicated with the sampling pipe; a plurality of sampling ports are arranged on the sampling tube.
5. The multipoint flue gas sampling device of claim 4, wherein: the heat preservation cover is a detachable heat preservation cover.
6. The multipoint flue gas sampling device of claim 1, wherein: the inner part of the flue of the sampling gun is processed by adopting wear-resistant, corrosion-resistant and high-temperature-resistant corundum.
7. The multipoint flue gas sampling device of claim 1, wherein: the mixed main pipe comprises a Y-shaped pipe (1) and a Y-shaped pipe (2), wherein the Y-shaped pipe (1) comprises a first branch pipe (11), a second branch pipe (12) and a branch collecting pipe (13); the tube (2) comprises a branch collecting pipe socket part (20), a third branch pipe (21), a fourth branch pipe (22) and a main collecting pipe (24); the first branch pipe (11) and the second branch pipe (12) are connected and extend forwards to form the branch collecting pipe (13) after being connected; the third branch pipe (21) and the fourth branch pipe (22) are connected and extend forwards to form the main junction pipe (24); the branch collecting pipe socket part (20) is arranged at the junction of the third branch pipe (21) and the fourth branch pipe (22) and used for installing the branch collecting pipe (13).
8. The flue gas multipoint sampling device of claim 7, wherein: and the pipe wall of the branch collecting pipe (13) is also provided with a limiting part (131).
9. The flue gas multipoint sampling device of claim 7, wherein: the connecting ends of the main collecting pipe (24), the third branch pipe (21) and the fourth branch pipe (22) are also provided with an expansion part (23).
10. The flue gas multipoint sampling device of claim 9, wherein: the cavity corresponding to the expansion part (23) is spherical, and two ends of the cavity are respectively communicated with the main junction pipe (24) and the junction of the third branch pipe (21) and the fourth branch pipe (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921570800.1U CN212059566U (en) | 2019-09-20 | 2019-09-20 | Flue gas multipoint sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921570800.1U CN212059566U (en) | 2019-09-20 | 2019-09-20 | Flue gas multipoint sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212059566U true CN212059566U (en) | 2020-12-01 |
Family
ID=73507844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921570800.1U Active CN212059566U (en) | 2019-09-20 | 2019-09-20 | Flue gas multipoint sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212059566U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109490A (en) * | 2021-04-13 | 2021-07-13 | 中国原子能科学研究院 | Gas sampling device and system |
-
2019
- 2019-09-20 CN CN201921570800.1U patent/CN212059566U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109490A (en) * | 2021-04-13 | 2021-07-13 | 中国原子能科学研究院 | Gas sampling device and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105854597B (en) | SCR denitration device ammonia-spraying grid intelligent optimization adjusts system and method | |
| CN107421790B (en) | Gaseous pollutant multi-point matrix mixed sampling device, sampling method thereof and blowback maintenance method | |
| CN105300459B (en) | Automatically cleaning flow detector | |
| CN215066412U (en) | Ammonia decomposition catalyst performance evaluation device of real flue gas | |
| CN212059566U (en) | Flue gas multipoint sampling device | |
| CN105067493A (en) | Online measurement system, online measurement equipment and online measurement method for concentration of flue dust | |
| CN103940641B (en) | Denitrification apparatus matrix form multidraw system | |
| CN201075065Y (en) | Dilution sampling system for engine exhaust particulate portion | |
| CN106018002A (en) | Matrix type mixed constant-speed sampling device | |
| JP5385979B2 (en) | System and method for detecting clogging in a conduit supplying solids and carrier gas to a flowing gas stream | |
| CN103471876A (en) | Dilution sampling probe | |
| CN109224854B (en) | Flue gas denitration grid method rotation sampling ammonia and nitrogen oxide combined monitoring device | |
| CN209166926U (en) | Environment-friendlydenitration denitration exports CEMS grid sampling and automatic blowout device | |
| CN204924867U (en) | Flue dust concentration on line measurement system and measuring equipment | |
| CN218782247U (en) | Flue gas measurement system based on full section multiple spot sampling model | |
| CN207991892U (en) | Coal-burning power plant's denitration exports NOx gridding method samplers | |
| CN116381135A (en) | Pollution emission monitoring system | |
| CN211205941U (en) | Differential pressure type flue gas gridding multi-point sampling device | |
| CN205643155U (en) | Detection apparatus for ammonia escape volume among out of stock exhaust pass | |
| CN112378714A (en) | Coal-fired boiler flue gas multi-point sampling device and method with automatic ash removal function | |
| CN109459097B (en) | Matrix distributed flow measuring device for online descaling and cold-hot state comparison | |
| CN113503558A (en) | CEMS (continuous emission monitoring system) multipoint sampling system for denitration inlet flue and denitration outlet flue of coal-fired unit | |
| CN217466371U (en) | Probe rod type instrument with multipoint mixing and sampling device | |
| CN210198816U (en) | System for measuring oxygen content in flue gas in flue and coal-fired boiler with system | |
| CN105784557A (en) | Matrix type automatic cycle sampling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |