CN220287404U - Automatic continuous exhaust adjustment control structure device for online detection of tail gas waste heat boiler - Google Patents
Automatic continuous exhaust adjustment control structure device for online detection of tail gas waste heat boiler Download PDFInfo
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- CN220287404U CN220287404U CN202321681185.8U CN202321681185U CN220287404U CN 220287404 U CN220287404 U CN 220287404U CN 202321681185 U CN202321681185 U CN 202321681185U CN 220287404 U CN220287404 U CN 220287404U
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- boiler
- water
- medicament
- continuous
- waste heat
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 116
- 239000003814 drug Substances 0.000 description 49
- 229910019142 PO4 Inorganic materials 0.000 description 47
- 239000010452 phosphate Substances 0.000 description 47
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 35
- 230000001105 regulatory effect Effects 0.000 description 35
- 238000005070 sampling Methods 0.000 description 28
- 239000007789 gas Substances 0.000 description 18
- 239000003795 chemical substances by application Substances 0.000 description 17
- 238000001514 detection method Methods 0.000 description 13
- 239000002918 waste heat Substances 0.000 description 12
- 239000003153 chemical reaction reagent Substances 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000006229 carbon black Substances 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to the technical field of carbon black power generation tail gas waste heat boilers, in particular to an automatic continuous discharge regulation control structure device for tail gas waste heat boilers, which comprises an upper boiler barrel, wherein the upper boiler barrel is connected with a boiler water automatic sampling device through a collecting pipeline, an electric sampling valve is arranged on the outer side of the collecting pipeline, a continuous discharge boiler water component measurement and analysis unit is arranged on the outer side of the boiler water automatic sampling device, a PLC continuous discharge control unit is arranged on the outer side of the boiler water automatic sampling device and is connected with the continuous discharge boiler water component measurement and analysis unit, and the PLC continuous discharge control unit is connected with a continuous discharge expansion container through a control pipeline. And reduces labor intensity, and effectively reduces boiler discharge, namely sewage discharge.
Description
Technical Field
The utility model relates to the technical field of carbon black power generation tail gas waste heat boilers, in particular to an automatic continuous discharge adjusting and controlling structure device for on-line detection of a tail gas waste heat boiler.
Background
At present, the automatic continuous discharge application of the carbon black tail gas waste heat boiler is relatively small in China, mainly because the tail gas heat value change and the gas flow are interfered by the tail gas consumption of a carbon black line, the combustion is unstable and the steam load of the boiler is changed, and the method mainly comprises a mode and a mode of manually operating, sampling, analyzing and timing continuous discharge, which are time-consuming and labor-consuming, has potential safety hazards in operation, but along with the national encouragement of enterprises to intelligently manufacture, transform and upgrade and group promotion production operation automation rate requirements, a plurality of carbon black industry enterprises also start to develop a boiler continuous discharge automatic control system aiming at the tail gas combustion type waste heat boiler.
At present, the carbon black power generation tail gas waste heat boiler continuously arranges current characteristics: the boiler water in the boiler drum is concentrated due to continuous evaporation, so that the salt concentration on the surface of the boiler water is the highest. With the continuous increase of the concentration of the boiler water, chemical reaction can be generated, foam is generated in the boiler water, steam is carried with water when serious, the steam quality is affected, and the consumption of tail gas of a waste heat boiler is unstable due to the influence of an upstream carbon black line. The water level change causes a slightly larger boiler load change; for sampling of furnace water, manual sampling analysis is adopted once every 4 hours, so that the phosphate percent of the boiler water is loitered at about 95%. The main reasons are as follows: firstly, the boiler load change is large, the boiler water is not detected on line, the dosage can not be accurately regulated on line, and the hysteresis of adding the medicament can not be realized; and secondly, the continuous discharge control cannot be accurately controlled, and continuous discharge is performed at fixed time completely according to the running experience of operators, but the continuous discharge effect of the boiler can be influenced by the boiler discharge rate and the pollution discharge operation method, so that an online detection automatic continuous discharge adjustment control structure device of the tail gas waste heat boiler is needed to be provided for solving the problem.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, and provides an automatic continuous discharge adjusting control structure device for on-line detection of a tail gas waste heat boiler to solve the problems.
In order to achieve the above purpose, the utility model designs an automatic continuous-discharge regulation control structure device for tail gas exhaust-heat boiler on-line detection, which comprises an upper boiler barrel, wherein the upper boiler barrel is connected with a boiler water automatic sampling device through a collecting pipeline, an electric sampling valve is arranged at the outer side of the collecting pipeline, a continuous-discharge boiler water component measurement and analysis unit is arranged at the outer side of the boiler water automatic sampling device, a PLC continuous-discharge control unit is arranged at the outer side of the boiler water automatic sampling device, the PLC continuous-discharge control unit is connected with the continuous-discharge boiler water component measurement and analysis unit, the PLC continuous-discharge control unit is connected with a continuous-discharge expansion container through a control pipeline, an electric regulating valve is arranged at the outer side of the control pipeline, a boiler water feeding pump is connected with a water feeding collecting control device through a collecting pipeline, a medicament regulation control unit is arranged at the outer side of the water feeding control device, and the upper boiler barrel is connected with the water feeding collecting control device through a water pipe.
Further, the continuous-flow furnace water component measurement and analysis unit consists of a first PH meter, a phosphate radical analyzer, a conductivity meter, a turbidity detector and a temperature sensor.
Further, the water supply collection control device consists of a second PH meter and a phosphate radical analyzer.
Further, the medicament adjusting and controlling unit comprises a first medicament delivery pump and a medicament tank A, wherein the first medicament delivery pump is connected with the water supply acquisition and control device through a water pipe, and the first medicament delivery pump is connected with the medicament tank A through the water pipe.
Further, the medicament adjusting and controlling unit further comprises a second medicament delivery pump and a medicament tank B, wherein the second medicament delivery pump is connected with the water supply acquisition and control device through a water pipe, and the second medicament delivery pump is connected with the medicament tank B through the water pipe.
Further, the inside of the chemical tank a and the chemical tank B are respectively loaded with a PH adjuster and a phosphate furnace treatment agent.
The utility model provides an automatic continuous exhaust regulation control structure device for online detection of a tail gas waste heat boiler, which has the beneficial effects that:
by continuously detecting key parameters in the boiler water system, corrective measures are immediately taken before problems occur, so that the fluctuation of the boiler operating water quality is prevented, and the boiler performance is improved to the maximum extent. The boiler water monitoring and the on-line water supply monitoring are realized, the stable control of accurate dosing and pollution discharge is realized, the stable concentration multiple of the boiler can be maintained, the pollution discharge amount of the boiler is reduced, the heat loss of the boiler is reduced, the operation efficiency of the boiler is improved, the sewage drainage amount of water treatment is reduced, the energy consumption is saved, the environmental protection risk of exceeding the standard of the 'phosphorus' index of the sewage treatment is reduced, and the potential risk hazard of scaling of the system due to higher concentration multiple is reduced.
Compared with the prior art, the steam boiler has the advantages of reasonable structural design, strong practicability, convenience and effectiveness in reducing the running risk of the boiler, prolonging the service life of the boiler and improving the steam quality. And reduces labor intensity, and effectively reduces boiler discharge, namely sewage discharge.
Drawings
FIG. 1 is a schematic diagram of the overall process flow of an on-line detection automatic continuous adjustment control structure device of a tail gas exhaust-heat boiler;
FIG. 2 is a schematic diagram of the technical flow structure of a boiler phosphate steam drum water quality regulating loop of an on-line detection automatic continuous discharge regulation control structure device of a tail gas waste heat boiler;
fig. 3 is a schematic diagram of a process flow of a boiler drum continuous exhaust loop of an on-line detection automatic continuous exhaust regulation control structure device of a tail gas waste heat boiler.
In the figure: the automatic boiler water sampling device 1, the continuous boiler water component measuring and analyzing unit 2, the PLC continuous control unit 3, the electric sampling valve 4, the electric regulating valve 5, the first medicament delivery pump 6, the medicament tank A7, the continuous blowdown flash vessel 8, the boiler feed pump 9, the feed water collecting and controlling device 10, the medicament regulating and controlling unit 11, the second medicament delivery pump 12, the medicament tank B13 and the upper boiler barrel 14.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-2, an on-line detection automatic continuous discharge regulation control structure device for a tail gas exhaust-heat boiler comprises an upper boiler barrel 14, wherein the upper boiler barrel 14 is connected with a boiler water automatic sampling device 1 through a collecting pipeline, an electric sampling valve 4 is arranged at the outer side of the collecting pipeline, a continuous discharge boiler water component measurement analysis unit 2 is arranged at the outer side of the boiler water automatic sampling device 1, the continuous discharge boiler water component measurement analysis unit 2 consists of a PH meter, a phosphate radical analyzer, a conductivity meter, a turbidity detector and a temperature sensor, a PLC continuous discharge control unit 3 is arranged at the outer side of the boiler water automatic sampling device 1, the PLC continuous discharge control unit 3 is connected with the continuous discharge boiler water component measurement analysis unit 2 through a control pipeline, an electric regulating valve 5 is arranged at the outer side of the control pipeline, after the electric regulating valve 4 is opened, the automatic online sampling of the furnace water in the upper boiler barrel 14 is realized through the automatic furnace water sampling device 1, and the period is longer because the concentration multiple of the furnace water is between 150 and 200, so the sampling period is 180 minutes in time, the PH value, the phosphate concentration, the conductivity, the turbidity and the temperature of the sampled furnace water are detected through the PH meter, the phosphate analyzer, the conductivity meter, the turbidity detector and the temperature sensor of the continuous furnace water component measuring and analyzing unit 2, when the phosphate concentration is more than 13mg/L or the conductivity is more than 300us/cm, the information is transmitted to the PLC continuous control and regulating unit 3, the PLC continuous control and regulating unit 3 automatically opens the electric regulating valve 5 to realize the online continuous discharge, the sampled furnace water is discharged into the continuous expansion vessel 8, when the phosphate concentration of the sampled furnace water is less than 12mg/L or the conductivity is less than 200us/cm, the electric regulating valve 5 is closed and the electric regulating valve 4 is automatically closed, the online boiler drum surface discharge is completed, the agent concentration of the furnace water is accurately controlled, the concentration multiple of the furnace water is accurately controlled, the furnace water automatically samples the phosphate radical concentration on line within 2 hours to be more than 15mg/L or exceeds 2 hours for a set time, the electric regulating valve 5 is closed and the electric regulating valve 4 is automatically closed, and the continuous discharge is finished after protective measures are carried out.
Referring to fig. 1-3, the boiler feed pump 9 is connected with a feed water collection control device 10 through a collection pipeline, the outside of the feed water collection control device 10 is provided with a medicament adjustment control unit 11, an upper drum 14 is connected with the feed water collection control device 10 through a water pipe, the feed water collection control device consists of a PH meter and a phosphate analyzer, the medicament adjustment control unit 11 comprises a first medicament delivery pump 6 and a medicament tank A7, the first medicament delivery pump 6 is connected with the feed water collection control device 10 through the water pipe, the first medicament delivery pump 6 is connected with the medicament tank A7 through the water pipe, the medicament adjustment control unit 11 also comprises a second medicament delivery pump 12 and a medicament tank B13, the second medicament delivery pump 12 is connected with the feed water collection control device 10 through the water pipe, the second medicament delivery pump 12 is connected with the medicament tank B13 through the water pipe, the PH regulator and the phosphate in-furnace treatment agent are respectively loaded in the medicament tank A7 and the medicament tank B13, in the process of feeding external water into the upper drum 14 through the boiler feed pump 9, PH value technology and phosphate concentration on-line detection are carried out after water is collected through a PH meter and a phosphate analyzer in the feed water collection control device 10, the PH regulator in the medicament tank A7 is conveyed into the feed water collection control device 10 through the first medicament conveying pump 6 of the medicament control and regulation unit 11, and the in-furnace treatment agent (phosphate) in the medicament tank B13 is conveyed into the feed water collection control device 10 through the second medicament conveying pump 12, so that control regulation of the PH medicament unit in the feed water collection control device 10 and control regulation of the phosphate concentration calculation control unit are realized.
Working principle: after the electric regulating valve 4 is opened, the automatic online sampling of the furnace water in the upper boiler barrel 14 is realized through the furnace water automatic sampling device 1, and the concentration multiple of the furnace water is between 150 and 200, the period is longer, so the sampling period is 180 minutes in time, the PH value, the phosphate concentration, the conductivity, the turbidity and the temperature of the sampled furnace water are detected through the PH meter, the phosphate analyzer, the conductivity meter, the turbidity detector and the temperature sensor of the continuous discharge furnace water component measuring and analyzing unit 2, when the phosphate concentration is more than 13mg/L or the conductivity is more than 300us/cm, the information is transmitted to the PLC continuous discharge control regulating unit 3, the PLC continuous discharge control regulating unit 3 automatically opens the electric regulating valve 5 to realize online continuous discharge, the sampled furnace water is discharged into the continuous discharge expander 8, when the phosphate concentration of the sampled furnace water is less than 12mg/L or the conductivity is less than 200us/cm, the electric regulating valve 5 is closed and the electric regulating valve 4 is automatically closed to finish the online boiler drum meter discharge, the reagent concentration of the boiler water is precisely controlled, the concentration multiple of the boiler water is precisely controlled, the automatic online sampling of the phosphate radical concentration of the boiler water is more than 15mg/L or exceeds 2 hours for a set time within 2 hours, the electric regulating valve 5 is closed and the electric regulating valve 4 is automatically closed, protective measures are carried out to finish the continuous discharge, further sampling collection is finished, in the process of feeding the external water to the upper boiler drum 14 through the boiler feed pump 9, the PH value technology and the phosphate radical concentration which are carried out after the water collection are detected online through a PH meter and a phosphate radical analyzer in the feed water collection control device 10, the PH regulator in the reagent tank A7 is conveyed to the feed water collection control device 10 through the first reagent conveying pump 6 of the reagent control regulating unit 11, and the second medicament delivery pump 12 delivers the treatment agent (phosphate) in the furnace in the medicament tank B13 to the water supply acquisition control device 10, so as to realize the control adjustment of the PH medicament unit in the water supply acquisition control device 10 and the control adjustment of the concentration calculation phosphate radical control unit, and the control adjustment of the PH medicament unit: the PH value of boiler feed water realizes on-line detection and pump flow regulation through a first medicament delivery pump 6, a medicament tank A7 and a medicament regulating pipeline loop of a PH control unit, stable control is realized, PH in the boiler feed water loop is set continuously and stably according to requirements, dosing rate of a feed water pH regulator self-completes flow addition of medicament, concentration of the boiler feed water medicament is accurately controlled, the pH value of the feed water is ensured to be qualified to the greatest extent, automatic on-line sampling of the boiler feed water is realized through a boiler feed water automatic sampling device 1 and an electric regulating valve 4, the PH value is detected on line, a target PH value is set with boiler drum water, a PID regulating control loop is completed, a pump flow regulating loop for controlling the pH value of the feed water is output, the pH regulator is fed on line for detecting and feeding on line, the pH value of the boiler feed water is regulated, adjustment of the feed water and the pH value of the boiler is achieved, standard of the pH value of the boiler feed water is ensured, and control regulation of a phosphate control unit is calculated in a concentration mode: the method comprises the steps that the concentration of phosphate in boiler feed water is regulated through a second agent delivery pump 12, an agent tank B13 and an agent regulating pipeline loop of a concentration calculation phosphate radical control unit, on-line detection and 4-20mA control pump flow regulation are realized, the dosing rate is regulated according to the operation conditions (the boiler concentration multiple and the boiler feed water flow variable calculation control dosage), stable control is achieved, the phosphate radical concentration in the boiler feed water loop is set and regulated according to the requirements, the flow addition of the agent is self-completed, the target phosphate radical concentration is set according to the automatic on-line sampling phosphate radical concentration of the boiler, the agent is added in a timing manner through an in-furnace treatment agent (phosphate), the agent adding concentration is automatically controlled through an advanced organic polymer dispersing agent, the stability of the concentration of the phosphate reagent is guaranteed, the stability of the phosphate reagent in the feed water is realized under the condition that the boiler concentration multiple is kept stable, the boiler phosphate concentration is regulated after the manual sampling analysis, the boiler phosphate fluctuation problem caused by a certain lag time is avoided, the concentration of the boiler phosphate reagent is accurately controlled, when the automatic on-line sampling of the boiler feed water is realized through an automatic on-line sampling device 1 and an electric regulating valve 4, the automatic on-line phosphate radical phosphate concentration is set, the target phosphate radical phosphate concentration is automatically detected, and the phosphate radical phosphate concentration is automatically adjusted when the on-line is adjusted by the on-line (PID is adjusted when the phosphate concentration is adjusted by the on-line when the online phosphate concentration is adjusted by the online regulating valve (L/is adjusted); the economic scheme is that when the automatic setting period sampling mode of furnace water is realized, the adjusting calculation base number of the treatment agent (phosphate) in the furnace in the water supply loop can be manually adjusted, the adding quantity base number of the agent is adjusted upwards, the continuous adjustment of the treatment agent in the furnace with the concentration of the phosphoric acid in the water supply is controlled according to the calculation of the water supply flow and the concentration multiple, the pump flow adjusting loop is output and controlled, the treatment agent (mg/L) in the furnace is controlled to be the water supply flow (FI-102. PV, according to the initial calculation of 100T/h), the treatment agent (concentration)/the concentration multiple (setting 200) in the furnace is controlled to be 0.01 to be the B (correction coefficient) to be 0.5mg/L; calculating a reagent control variable A=water supply flow (FI-102. PV), treating reagent (concentration)/concentration multiple (set 200) in the boiler is 0.01, and finally, water is conveyed into the upper boiler barrel 14 through the water supply acquisition control device 10, so that the device can immediately take corrective measures before problems occur through continuously detecting key parameters in a boiler water system, prevent boiler operation water quality fluctuation, furthest improve boiler performance, realize boiler water monitoring and water supply on-line monitoring, accurately perform stable control of dosing and pollution discharge, maintain stable boiler concentration multiple, reduce boiler heat loss due to boiler pollution discharge, improve boiler operation efficiency, reduce water treatment wastewater discharge to save energy consumption, reduce environmental protection risk of exceeding a water treatment drainage 'phosphorus' index, and have potential risk hazard to scaling of the system due to higher concentration multiple.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The utility model provides an automatic continuous row of exhaust-gas waste heat boiler detects and adjusts control structure device, includes a boiler section of thick bamboo (14) and boiler feed water pump (9), its characterized in that, a boiler section of thick bamboo (14) are connected with boiler water automatic sampling device (1) through the collection pipeline, electric sampling valve (4) are installed in the collection pipeline outside, the outside of boiler water automatic sampling device (1) is provided with continuous row of boiler water composition measurement analysis unit (2), the outside of boiler water automatic sampling device (1) is provided with PLC continuous row control unit (3), PLC continuous row control unit (3) are connected with continuous row of boiler water composition measurement analysis unit (2), PLC continuous row control unit (3) are connected with continuous blowdown expander (8) through control pipeline, electric control valve (5) are installed in the outside of control pipeline, boiler feed water pump (9) are connected with feed water collection control device (10) through the collection pipeline, the outside of feed water collection control device (10) is provided with medicament regulation control unit (11), a boiler section of thick bamboo (14) are connected with feed water control device (10) through the water pipe.
2. The on-line detection automatic continuous-discharge regulation control structure device for the tail gas waste heat boiler according to claim 1, wherein the continuous-discharge boiler water component measurement analysis unit (2) comprises a PH meter, a phosphate radical analyzer, a conductivity meter, a turbidity detector and a temperature sensor.
3. The on-line detection automatic continuous-discharge regulation control structure device for the tail gas waste heat boiler according to claim 1, wherein the water supply collection control device comprises a PH meter and a phosphate analyzer.
4. The on-line detection automatic continuous-discharge regulation control structure device of the tail gas waste heat boiler according to claim 1, wherein the medicament regulation control unit (11) comprises a first medicament delivery pump (6) and a medicament tank A (7), the first medicament delivery pump (6) is connected with a water supply collection control device (10) through a water pipe, and the first medicament delivery pump (6) is connected with the medicament tank A (7) through a water pipe.
5. The on-line detection automatic continuous-discharge regulation control structure device for the tail gas waste heat boiler according to claim 4, wherein the medicament regulation control unit (11) further comprises a second medicament delivery pump (12) and a medicament tank B (13), the second medicament delivery pump (12) is connected with the water supply collection control device (10) through a water pipe, and the second medicament delivery pump (12) is connected with the medicament tank B (13) through the water pipe.
6. The on-line detection automatic continuous adjustment control structure device for the tail gas waste heat boiler according to claim 5, wherein the interiors of the medicament tank A (7) and the medicament tank B (13) are respectively loaded with a PH regulator and a phosphate furnace treatment agent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321681185.8U CN220287404U (en) | 2023-06-29 | 2023-06-29 | Automatic continuous exhaust adjustment control structure device for online detection of tail gas waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321681185.8U CN220287404U (en) | 2023-06-29 | 2023-06-29 | Automatic continuous exhaust adjustment control structure device for online detection of tail gas waste heat boiler |
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| Publication Number | Publication Date |
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| CN220287404U true CN220287404U (en) | 2024-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321681185.8U Active CN220287404U (en) | 2023-06-29 | 2023-06-29 | Automatic continuous exhaust adjustment control structure device for online detection of tail gas waste heat boiler |
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| Country | Link |
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| CN (1) | CN220287404U (en) |
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2023
- 2023-06-29 CN CN202321681185.8U patent/CN220287404U/en active Active
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