CN217033250U - Flue gas oxygen contains gas detection and analysis device - Google Patents
Flue gas oxygen contains gas detection and analysis device Download PDFInfo
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- CN217033250U CN217033250U CN202220623999.5U CN202220623999U CN217033250U CN 217033250 U CN217033250 U CN 217033250U CN 202220623999 U CN202220623999 U CN 202220623999U CN 217033250 U CN217033250 U CN 217033250U
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- Prior art keywords
- boiler
- air
- flue gas
- cooling
- pipe
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000001301 oxygen Substances 0.000 title claims abstract description 57
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 57
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000003546 flue gas Substances 0.000 title claims abstract description 45
- 239000007789 gas Substances 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 50
- 239000002893 slag Substances 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 description 22
- 238000002485 combustion reaction Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000002918 waste heat Substances 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
A flue gas oxygen content gas detection and analysis device comprises a boiler, wherein a blast box is arranged at the lower end of the boiler, one end of the blast box is connected with an air inlet pipe, an air blower is connected onto the air inlet pipe, an air diffusing cover is arranged on the inner wall of the upper end of the boiler, the lower end of the air diffusing cover is connected with a cooling filter cylinder, the lower end of the cooling filter cylinder is fixedly connected with a gas collecting hood corresponding to the air diffusing cover, a cooling pipe is arranged in the cooling filter cylinder, the lower end of the cooling pipe is provided with a filter plate connected with the cooling filter cylinder, the upper end of the boiler is provided with a plurality of gas outlet branch pipes communicated with the air diffusing cover, the upper ends of the gas outlet branch pipes are both communicated with a combined pipe, the middle part of the combined pipe is fixedly connected with a gas outlet cylinder, the two sides of the gas outlet cylinder are respectively and symmetrically connected with a first oxygen content analyzer and a second oxygen content analyzer, and the problem that the flue gas oxygen content gas detection and analysis device in the prior art lacks flue gas detection and analysis device in flue gas dust removal and cooling operation is effectively solved, easily causes the problems of inaccurate measurement of the oxygen analyzer and reduced service life.
Description
Technical Field
The utility model relates to the field of smoke detection, in particular to a smoke oxygen-containing gas detection and analysis device.
Background
In the process of burning fuel in a boiler, the oxygen content in the flue gas is generally required to be monitored to know the excess air coefficient a so as to judge whether the burning is in the optimal state, and an oxygen content signal can be introduced into an automatic burning control system to be used as a correction signal to control the air supply quantity so as to ensure the economic burning of the boiler.
Excess air coefficient a is expressed with the size of oxygen content in the flue gas, oxygen content measurement has the significance in thermal power plant boiler economic operation and environmental protection discharge to reach standard, contain a lot of smoke and dust in the flue gas of boiler emission usually, the smoke and dust accumulation not only causes oxygen analyzer to damage, and can direct influence boiler afterbody flue gas oxygen content measuring accuracy, current check out test set lacks flue gas cooling structure usually in addition, directly utilize oxygen analyzer to detect, can reduce oxygen analyzer's the life-span of using, increase the cost of using.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the flue gas oxygen content gas detection and analysis device, which effectively solves the problems that the flue gas oxygen content gas detection and analysis device in the prior art is lack of flue gas dedusting and cooling operation, so that the oxygen content analyzer is easy to measure inaccurately and the service life is shortened.
In order to solve the problems, the technical scheme adopted by the utility model is as follows: the utility model provides a flue gas oxygen contains gaseous detection and analysis device, includes the boiler, and the boiler lower extreme is equipped with the bellows, bellows one end is connected with the intake pipe, is connected with the air-blower in the intake pipe, boiler upper end inner wall is equipped with the gas cover that looses, and the gas cover lower extreme that looses is connected with the cooling cartridge filter, cooling cartridge filter lower extreme fixedly connected with and the corresponding gas collecting channel of gas cover that looses, be equipped with the cooling tube in the cooling cartridge filter, the cooling tube lower extreme is equipped with the filter that is connected with the cooling cartridge filter, the boiler upper end is equipped with a plurality of branch pipes of giving vent to anger that the gas cover is linked together, and the branch pipe upper end of giving vent to anger all communicates and closes the pipe, closes a pipe middle part fixedly connected with and goes out the gas cylinder, go out a gas cylinder both sides respectively symmetric connection have first oxygen analysis appearance and second oxygen analysis appearance.
Furthermore, a liquid inlet and a liquid outlet which are communicated with the cooling pipe are respectively arranged on two sides of the upper end of the boiler.
Furthermore, the air inlet pipe is provided with a control valve matched with the air blower.
Furthermore, the lower end of the blast box is fixedly connected with a slag discharging barrel, and the bottom of the slag discharging barrel is provided with a slag outlet.
Furthermore, the gas-collecting channel is made of high-temperature-resistant materials, and the diameter of the thick end of the gas-collecting channel is the same as that of the boiler at the joint.
The utility model has novel structure, ingenious conception and simple and convenient operation, and compared with the prior art, the utility model has the following advantages:
1. the utility model discloses set up the communicating branch pipe of giving vent to anger of flue gas in a plurality of and the boiler, the branch pipe of giving vent to anger is located the different position in boiler upper end moreover, and the flue gas that will give vent to anger in the branch pipe is concentrated and is collected to closing intraductally, sets up first oxygen analyzer and second oxygen analyzer simultaneously and closes intraductal flue gas to the convection current and detect, has improved the accuracy that oxygen content detected in the flue gas greatly.
2. Through set up the filter in the cooling cartridge filter, utilize the filter to detach the smoke and dust in with the flue gas, avoid the smoke and dust accumulation in the flue gas, influence the reliability and the accuracy of the detection structure of first oxygen analyzer and second oxygen analyzer.
3. Through set up the cooling tube in the cartridge filter of cooling down, utilize the water that passes through in the cooling tube to carry out the heat transfer cooling to the waste heat in the flue gas, the effectual flue gas waste heat that avoids is too high on the one hand causes the damage to first oxygen volume analysis appearance and second oxygen volume analysis appearance, and the waste heat in the on the other hand flue gas heats up the water in the cooling tube, is used as domestic water, realizes the recycle to the flue gas waste heat.
Drawings
FIG. 1 is a front view of a flue gas oxygen content gas detection and analysis apparatus of the present invention;
FIG. 2 is a sectional view of a flue gas oxygen content gas detection and analysis device of the present invention;
fig. 3 is a schematic structural diagram of a cooling filter cartridge of an apparatus for detecting and analyzing oxygen-containing gas in flue gas according to the present invention.
The reference numbers in the figures: 1. a boiler; 2. an air outlet branch pipe; 3. combining the pipes; 4. a first oxygen analyzer; 5. an air outlet cylinder; 6. a second oxygen analyzer; 7. an air inlet pipe; 8. a control valve; 9. a blower; 10. a blast box; 11. a slag discharge barrel; 12. a gas diffusion cover; 13. cooling the filter cartridge; 14. a gas-collecting channel; 15. a filter plate; 16. a liquid outlet; 17. a liquid inlet; 18. and (7) cooling the tube.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the drawings, but the present invention is not limited to these embodiments.
A flue gas oxygen content gas detection and analysis device is shown in figures 1-3 and comprises a boiler 1, a blast box 10 is arranged at the lower end of the boiler 1, one end of the blast box 10 is connected with an air inlet pipe 7, the air inlet pipe 7 is connected with a blower 9, the inner wall of the upper end of the boiler 1 is provided with an air dispersing cover 12, the lower end of the air dispersing cover 12 is connected with a cooling filter cylinder 13, the lower end of the cooling filter cylinder 13 is fixedly connected with a gas collecting hood 14 corresponding to the air dispersing cover 12, a cooling pipe 18 is arranged in the cooling filter cylinder 13, a filter plate 15 connected with the cooling filter cylinder 13 is arranged at the lower end of the cooling pipe 18, a plurality of air outlet branch pipes 2 communicated with the air dispersing cover 12 are arranged at the upper end of the boiler 1, the upper ends of the air outlet branch pipes 2 are communicated with a combined pipe 3, an air outlet cylinder 5 is fixedly connected at the middle part of the combined pipe 3, and the two sides of the air outlet cylinder 5 are respectively and symmetrically connected with a first oxygen analyzer 4 and a second oxygen analyzer 6.
When the utility model is used, the blower 9 works, the blower 9 blows air into the boiler 1 through the air inlet pipe 7 to provide oxygen for combustion in the boiler 1, smoke generated in the combustion process is collected through the air collecting hood 14, smoke dust in the smoke is filtered through the filter plate 15 in the cooling filter cylinder 13 in the process of passing through the cooling filter cylinder 13, the filtered smoke enters the air dispersing hood 12 after being subjected to heat exchange and cooling through the condensing pipe, as the upper end of the air dispersing hood 12 is communicated with the plurality of air outlet branch pipes 2, the smoke simultaneously enters the air outlet branch pipes 2 through the air dispersing hood 12, the smoke in the air outlet branch pipes 2 all enters the closed pipes 3 and is discharged upwards through the air outlet cylinder 5, and in the process of passing through the air outlet cylinder 5, the first oxygen content analyzer 4 and the second oxygen content analyzer 6 on two sides of the air outlet cylinder 5 simultaneously detect the smoke passing through the air outlet cylinder 5, and judge whether the boiler 1 is fully combusted through the oxygen content in the smoke, when the oxygen content in the flue gas is too high, the air supply amount is reduced through the air blower 9, and when the oxygen content in the flue gas is too low, the air supply amount is increased through the air blower 9.
As shown in fig. 1 and 2, a liquid inlet 17 and a liquid outlet 16 are respectively arranged at two sides of the upper end of the boiler 1 and communicated with a cooling pipe 18.
Preferably, water is injected from the liquid inlet pipe, flows out from the liquid outlet 16 after passing through the cooling pipe 18, flows through the cooling pipe 18, the flue gas is discharged upwards from the outside of the cooling pipe 18, the water in the cooling pipe 18 exchanges heat and cools the flue gas, and the waste heat in the flue gas heats the water in the cooling pipe 18 and is used as domestic water, so that the waste heat of the flue gas is recycled.
As shown in fig. 1, the intake pipe 7 is provided with a control valve 8 that cooperates with a blower 9.
Preferably, the control valve 8 is used for adjusting the air inflow in the boiler 1, so that the oxygen content in the flue gas is changed, the economic combustion of the boiler 1 is ensured, and meanwhile, harmful oxidizing gas generated due to incomplete combustion can be reduced.
As shown in fig. 1, the lower end of the blast box 10 is fixedly connected with a slag discharging barrel 11, and the bottom of the slag discharging barrel 11 is provided with a slag discharging hole.
Preferably, the waste slag from the combustion in the boiler 1 falls into the slag tapping shaft 11 due to gravity and is discharged through the slag tapping hole.
As shown in fig. 2, the gas collecting channel 14 is made of high temperature resistant material, and the diameter of the thick end of the gas collecting channel 14 is the same as the diameter of the boiler 1 at the connection position.
Preferably, the gas-collecting hood 14 is used for collecting flue gas generated by combustion in the boiler 1, so that the gas-collecting hood 14 is made of a high-temperature-resistant material, and the gas-collecting hood 14 is prevented from being damaged by high temperature generated by combustion; the diameter of the thick end of the gas collecting hood 14 is the same as that of the boiler 1, so that the flue gas generated in the boiler 1 is completely upwards diffused through the gas collecting hood 14.
The working process of the utility model is as follows: when the utility model is used, the blower 9 works, the blower 9 blows air into the boiler 1 through the air inlet pipe 7 to provide oxygen for combustion in the boiler 1, smoke generated in the combustion process is collected through the air collecting hood 14, smoke dust in the smoke is filtered through the filter plate 15 in the cooling filter cylinder 13 in the process of passing through the cooling filter cylinder 13, the filtered smoke enters the air dispersing hood 12 after being subjected to heat exchange and cooling through the condensing pipe, as the upper end of the air dispersing hood 12 is communicated with the plurality of air outlet branch pipes 2, the smoke simultaneously enters the air outlet branch pipes 2 through the air dispersing hood 12, the smoke in the air outlet branch pipes 2 all enters the closed pipes 3 and is discharged upwards through the air outlet cylinder 5, and in the process of passing through the air outlet cylinder 5, the first oxygen content analyzer 4 and the second oxygen content analyzer 6 on two sides of the air outlet cylinder 5 simultaneously detect the smoke passing through the air outlet cylinder 5, and judge whether the boiler 1 is fully combusted through the oxygen content in the smoke, when the oxygen content in the flue gas is too high, the control valve 8 is utilized to reduce the air input in the boiler 1, and when the oxygen content in the flue gas is too low, the control valve 8 is utilized to increase the air input in the boiler 1, thereby ensuring the economic combustion in the boiler 1.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Claims (5)
1. The utility model provides a flue gas oxygen contains gas detection and analysis device which characterized in that: the device comprises a boiler (1), wherein a blast box (10) is arranged at the lower end of the boiler (1), one end of the blast box (10) is connected with an air inlet pipe (7), an air blower (9) is connected to the air inlet pipe (7), an air dispersing hood (12) is arranged on the inner wall of the upper end of the boiler (1), a cooling filter cylinder (13) is connected to the lower end of the air dispersing hood (12), a gas collecting hood (14) corresponding to the air dispersing hood (12) is fixedly connected to the lower end of the cooling filter cylinder (13), a cooling pipe (18) is arranged in the cooling filter cylinder (13), a filter plate (15) connected with the cooling filter cylinder (13) is arranged at the lower end of the cooling pipe (18), a plurality of air outlet branch pipes (2) communicated with the air dispersing hood (12) are arranged at the upper end of the boiler (1), a closed pipe (3) is communicated to the upper end of each air outlet branch pipe (2), an air outlet cylinder (5) is fixedly connected to the middle of each air outlet cylinder (5), and a first oxygen analyzer (4) and a second oxygen analyzer are symmetrically connected to two sides of each air outlet cylinder (5) And (6) a meter.
2. The device for detecting and analyzing oxygen content in flue gas according to claim 1, wherein: and a liquid inlet (17) and a liquid outlet (16) which are communicated with the cooling pipe (18) are respectively arranged at two sides of the upper end of the boiler (1).
3. The apparatus for detecting and analyzing oxygen content in flue gas according to claim 1, wherein: and a control valve (8) matched with the air blower (9) is arranged on the air inlet pipe (7).
4. The apparatus for detecting and analyzing oxygen content in flue gas according to claim 1, wherein: the lower end of the blast box (10) is fixedly connected with a slag discharging barrel (11), and the bottom of the slag discharging barrel (11) is provided with a slag outlet.
5. The device for detecting and analyzing oxygen content in flue gas according to claim 1, wherein: the gas-collecting hood (14) is made of high-temperature-resistant materials, and the diameter of the thick end of the gas-collecting hood (14) is the same as that of the boiler (1) at the connecting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220623999.5U CN217033250U (en) | 2022-03-22 | 2022-03-22 | Flue gas oxygen contains gas detection and analysis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220623999.5U CN217033250U (en) | 2022-03-22 | 2022-03-22 | Flue gas oxygen contains gas detection and analysis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217033250U true CN217033250U (en) | 2022-07-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220623999.5U Expired - Fee Related CN217033250U (en) | 2022-03-22 | 2022-03-22 | Flue gas oxygen contains gas detection and analysis device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217033250U (en) |
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2022
- 2022-03-22 CN CN202220623999.5U patent/CN217033250U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220722 |
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| CF01 | Termination of patent right due to non-payment of annual fee |