CN219415258U - Flame detection device of horizontal hot-blast stove - Google Patents
Flame detection device of horizontal hot-blast stove Download PDFInfo
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- CN219415258U CN219415258U CN202320398560.1U CN202320398560U CN219415258U CN 219415258 U CN219415258 U CN 219415258U CN 202320398560 U CN202320398560 U CN 202320398560U CN 219415258 U CN219415258 U CN 219415258U
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- blast stove
- cooling air
- detection probe
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Abstract
The utility model relates to the technical field of hot-blast stove flame signal detection devices, in particular to a horizontal hot-blast stove flame detection device, wherein an ignition gun fire detection probe is connected to an ignition gun, and the ignition gun fire detection probe is connected with a second flame detector through a signal wire; the device has the advantages of lower cost, reliable use, simple installation and operation and convenient maintenance, and has the advantages of continuously supplying and protecting the two fire detection probes by cooling air, so that the device stably operates for a long time, and the problem of abnormal furnace shutdown of the hot blast stove caused by inaccurate flame signal measurement or undetected flame signals in the measurement process of the flame signals of the hot blast stove is well solved.
Description
Technical Field
The utility model relates to the technical field of flame signal detection devices of hot blast stoves, in particular to a horizontal type hot blast stove flame detection device.
Background
The most commonly used flame signal detection devices of the hot blast stove in the prior art are all through ultraviolet light fire detection probes, the fire detection probes output signals to the flame detector after detecting ultraviolet light signals, and the flame detector outputs switching value signals to the PLC control system to participate in logic judgment, so that the device has the characteristics of simple measurement method, convenience in daily maintenance and low investment cost. However, in the actual production process, especially when the flame detection probe is installed in an unsatisfactory position, the normally-operated hot blast stove is stopped due to the fact that a flame signal is not detected, abnormal flameout of the hot blast stove is caused, the destructive distillation production line is indirectly caused, the flame detector is abnormal, maintenance personnel is required to check a hot blast stove flame detection loop, on one hand, the requirement of maintenance personnel on energy and skills is higher when the maintenance personnel carry out the work, on the other hand, from the viewpoint of operators, the maintenance personnel need to check an instrument and control loop to carry out maintenance tasks when receiving the abnormal flameout of the hot blast stove, and the hot blast stove blowing, the leak detection and other procedures are required to be carried out again when the ignition procedure of the hot blast stove is carried out, if the temperature of the hot blast stove is fast in the period, the hot blast stove is large in the temperature difference, the other hot blast stove needs to be extinguished, and the feeding of the destructive distillation furnace and the drying furnace is stopped at the same time, and the whole production line cannot be forced to produce qualified products, so that the production is stopped.
Disclosure of Invention
The utility model aims to provide a flame detection device of a horizontal hot blast stove, which solves the problem that the stove is abnormally shut down due to inaccurate flame signal measurement or undetected flame signal generated in the measurement process of a flame signal of a hot blast stove hearth.
The utility model relates to a flame detection device of a horizontal hot blast stove, which comprises a burning torch, a gas pipeline cut-off valve and a fire observation hole, wherein the burning torch is connected with a burning torch fire detection probe which is connected with a second flame detector through a signal wire; the fire observation hole fire detection probe is connected with a fire observation hole fire detection probe, the fire observation hole fire detection probe is connected with a first flame detector through a signal wire, the first flame detector comprises a first signal wire, the second flame detector comprises a second signal wire, and the first signal wire and the second signal wire are connected to the PLC.
The ignition gun fire detection probe is used for detecting the flame combustion condition of the ignition gun, the fire observation hole fire detection probe is used for detecting the flame combustion condition inside the horizontal hot blast stove, and the working state of the horizontal hot blast stove is judged through flame signals detected by the ignition gun fire detection probe and the fire observation hole fire detection probe, so that proper operation is carried out, and the first signal wire and the second signal wire are connected to the PLC, so that automatic control is realized through the PLC.
Further, the fire observation hole is connected with a first cooling air pipeline, and the first cooling air pipeline is arranged in front of the fire observation hole fire detection probe. The first cooling air pipeline is used for conveying cooling air into the fire observation holes, so that the cooling protection of the fire inspection probes of the fire observation holes is realized.
Further, a first control ball valve is connected to the first cooling air pipeline. The first control ball valve is used for controlling the on-off of the first cooling air pipeline.
Further, the ignition gun is connected with a second cooling air pipeline, and the second cooling air pipeline is arranged in front of the ignition gun fire detection probe. The second cooling air pipeline is used for conveying cooling air into the ignition gun, so that cooling protection of the ignition detection probe of the ignition gun is realized.
Further, a second control ball valve is connected to the second cooling air pipeline. The second control ball valve is used for controlling the on-off of the second cooling air pipeline.
Further, the flame detector comprises a 24V power supply, and the first flame detector power supply line and the second flame detector power supply line are connected to the 24V power supply.
The beneficial effects of the utility model are as follows: the ignition gun is connected with an ignition gun fire detection probe which is connected with a second flame detector through a signal wire; the fire observation hole fire detection probe is connected with the fire observation hole fire detection probe, the fire observation hole fire detection probe is connected with the first flame detector through the signal wire, the first flame detector comprises a first signal wire, the second flame detector comprises a second signal wire, and the first signal wire and the second signal wire are both connected to the PLC.
Drawings
FIG. 1 is a schematic view of the structure of the present utility model
In the figure: 1. horizontal hot-blast stove; 2. igniting the gun; 3. a gas pipeline shut-off valve; 4. ignition gun fire detection probe; 5. fire inspection probes for fire observation holes; 6. a cooling air control ball valve; 7. a cooling air control ball valve; 8. a cooling air duct; 9. a cooling air duct; 10. a flame detector; 11. a flame detector; 12. a flame signal; 13. a flame signal; 14.24V power supply; 15. and a fire observation hole.
Detailed Description
As shown in fig. 1, the horizontal hot blast stove 1 comprises a burning torch 2, a gas pipeline cut-off valve 3 and a fire observation hole 15, wherein the burning torch 2 is connected with a burning torch fire detection probe 4, and the burning torch fire detection probe 4 is connected with a second flame detector 11 through a signal wire; the fire observation hole 15 on be connected with the fire observation hole fire and examine probe 5, the fire observation hole fire examine probe 5 is connected with first flame detector 10 through the signal line, first flame detector 10 is including first signal line 12, including second signal line 13 on the second flame detector 11, first signal line 12 and second signal line 13 all connect on PLC, including 24V power 14, first flame detector 10 power cord and second flame detector 11 power cord all connect on 24V power 14.
The fire observation hole 15 is connected with a first cooling air pipeline 8, the first cooling air pipeline 8 is arranged in front of the fire observation hole fire detection probe 5, and the first cooling air pipeline 8 is connected with a first control ball valve 6.
The ignition gun 2 is connected with a second cooling air pipeline 9, the second cooling air pipeline 9 is arranged in front of the ignition gun fire detection probe 4, and the second cooling air pipeline 9 is connected with a second control ball valve 7.
In the utility model, an ignition gun fire detection probe 4 is used for detecting the flame burning condition of a fire gun, and a fire observation hole fire detection probe 5 is used for detecting the flame burning condition in the horizontal hot blast stove 1.
When the flame detection loop is normal, the gas pipeline cut-off valve 3 is in an open state, and gas enters the hot blast stove for continuous combustion; when the gas in the hearth of the hot blast stove burns normally, the ignition gun fire detection probe 4 does not detect a flame signal, the fire observation hole fire detection probe 5 detects a flame signal, the PLC control program judges that the flame signal is normal, and the gas pipeline cut-off valve 3 is continuously in an open state.
When the gas in the hearth of the hot blast stove burns normally, the ignition gun fire detection probe 4 detects a flame signal, the fire observation hole fire detection probe 5 does not detect the flame signal, the PLC control program judges that the flame signal is normal, and the gas pipeline cut-off valve 3 is continuously in an open state.
When the ignition gun fire detection probe 4 does not detect a flame signal and the fire observation hole fire detection probe 5 does not detect a flame signal, the PLC control program judges that the flame signal is abnormal, the gas pipeline cut-off valve 3 is in a closed state, and at the moment, the hot air furnace fire stops burning, so that the function of interlocking and stopping the furnace is achieved.
When the hot blast stove operates, the first control ball valve 6 and the second control ball valve 7 of the cooling air control ball valve are opened, cooling air is continuously blown into the hearth, the purpose of cooling the fire detection probe is achieved, the damage caused by the overhigh surface temperature of the fire detection probe is prevented, and the purpose of detecting flame signals cannot be achieved.
Claims (6)
1. Horizontal hot-blast furnace flame detection device, horizontal hot-blast furnace (1) are including ignition rifle (2), gas pipeline trip valve (3) and fire observation hole (15), its characterized in that: the ignition gun (2) is connected with an ignition gun fire detection probe (4), and the ignition gun fire detection probe (4) is connected with a second flame detector (11) through a signal wire; the fire observation hole (15) on be connected with fire observation hole fire and examine probe (5), fire observation hole fire examine probe (5) are connected with first flame detector (10) through the signal line, first flame detector (10) are including first signal line (12), including second signal line (13) on second flame detector (11), first signal line (12) and second signal line (13) are all connected on PLC.
2. A horizontal stove flame detection device according to claim 1, wherein: the fire observation hole (15) is connected with a first cooling air pipeline (8), and the first cooling air pipeline (8) is arranged in front of the fire observation hole fire detection probe (5).
3. A horizontal stove flame detection device according to claim 2, wherein: the first cooling air pipeline (8) is connected with a first control ball valve (6).
4. A horizontal stove flame detection device according to claim 3, wherein: the ignition gun (2) is connected with a second cooling air pipeline (9), and the second cooling air pipeline (9) is arranged in front of the ignition gun fire detection probe (4).
5. The horizontal hot blast stove flame detection device as claimed in claim 4, wherein: and a second control ball valve (7) is connected to the second cooling air pipeline (9).
6. A horizontal stove flame detection device according to any one of claims 1 to 5, wherein: the flame detector comprises a 24V power supply (14), wherein the power lines of the first flame detector (10) and the second flame detector (11) are connected to the 24V power supply (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320398560.1U CN219415258U (en) | 2023-03-06 | 2023-03-06 | Flame detection device of horizontal hot-blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320398560.1U CN219415258U (en) | 2023-03-06 | 2023-03-06 | Flame detection device of horizontal hot-blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219415258U true CN219415258U (en) | 2023-07-25 |
Family
ID=87241244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320398560.1U Active CN219415258U (en) | 2023-03-06 | 2023-03-06 | Flame detection device of horizontal hot-blast stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219415258U (en) |
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2023
- 2023-03-06 CN CN202320398560.1U patent/CN219415258U/en active Active
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