CN216592687U - Demisting device for flame detector for boiler burner - Google Patents
Demisting device for flame detector for boiler burner Download PDFInfo
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- CN216592687U CN216592687U CN202123195386.0U CN202123195386U CN216592687U CN 216592687 U CN216592687 U CN 216592687U CN 202123195386 U CN202123195386 U CN 202123195386U CN 216592687 U CN216592687 U CN 216592687U
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- flame detector
- boiler burner
- inlet pipe
- spray head
- air inlet
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Abstract
The utility model provides a demisting device for a flame detector for a boiler burner, which comprises an air inlet pipe, a heating device and a spray head, wherein the spray head is arranged in a fixed hole of a flame detector mounting base; the spray hole of the spray head faces to the probe of the flame detector, and the flame detector mounting base is arranged on the combustion chamber of the boiler burner; one end of the air inlet pipe is connected with the spray head, the other end of the air inlet pipe is connected with an air supply pipe of the compressed air supply device through the heating device, and a valve is arranged on the air supply pipe. The utility model utilizes the heating device to heat the compressed air, the heated compressed air is blown to the probe of the flame detector through the spray holes of the spray head, the hot compressed air is utilized to ensure that the water mist on the probe can be quickly evaporated and the dry state is kept, thereby ensuring that the probe can detect the flame intensity change in the combustion chamber.
Description
Technical Field
The utility model belongs to the technical field of boiler burners, and particularly relates to a demisting device for a flame detector for a boiler burner.
Background
At present, according to the environmental protection requirement, in order to reduce the exhaust emission of the boiler in the combustion process, the low-nitrogen modification of the boiler burner is carried out, and all environmental protection indexes reach certain requirements after the modification. The utilization technology of the flue gas recirculation of the boiler burner is that partial low-temperature flue gas is directly sent into a hearth, namely a combustion chamber, or is mixed with air again to enter the hearth, when the flue gas meets the flame after combustion, the temperature inside the hearth can rise, certain steam can be formed in the hearth at the moment, and the steam can be dissociated on the surface of a probe of a flame detector. Because the working principle of the flame detector is to sense the intensity signal of infrared rays when flame burns, if water mist formed by water vapor is arranged on a probe of the flame detector, the detection of the flame intensity in a hearth can be influenced, and the phenomenon of automatic shutdown or point misfire can be caused. Therefore, how to eliminate the water mist on the probe of the flame detector is a technical problem which needs to be solved urgently by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a demisting device for a flame detector for a boiler, which aims to solve the technical problems in the prior art.
In order to realize the purpose, the utility model provides the following technical scheme:
a demisting device for a flame detector for a boiler burner comprises an air inlet pipe, a heating device and a spray head, wherein the spray head is arranged in a fixing hole of a flame detector mounting base; the spray hole of the spray head faces to the probe of the flame detector, and the flame detector mounting base is arranged on a combustion chamber of the boiler burner; one end of the air inlet pipe is connected with the spray head, the other end of the air inlet pipe is connected with an air supply pipe of the compressed air supply device through the heating device, and a valve is arranged on the air supply pipe.
Preferably, the heating device comprises a shell, an electric stove wire arranged in the shell and a power supply used for supplying power to the electric stove wire, a control switch is arranged between the power supply and the electric stove wire, one end of the shell is connected with the air inlet pipe, and the other end of the shell is connected with the air supply pipe.
Preferably, the outer shell is a cylindrical insulating high-temperature-resistant shell.
Preferably, a potentiometer is arranged between the control switch and the electric stove wire.
Preferably, the compressed air supply device is a blower.
Preferably, the nozzle hole is a trumpet hole.
Preferably, a rubber sealing ring is arranged at the joint of the air inlet pipe and the spray head.
Preferably, the flame detector mounting base is provided on a left side or a right side of the combustion chamber.
The utility model has the beneficial effects that:
when the demisting device for the flame detector for the boiler burner is used, compressed air in an air supply pipe flows to the air inlet pipe through the heating device, the compressed air is heated by the heating device, the heated compressed air is blown to the probe of the flame detector through the air inlet pipe and the spray holes of the spray head, and water mist on the probe can be quickly evaporated by the hot compressed air and is always kept in a dry state, so that the probe can well detect the change of the flame intensity in a combustion chamber, and the phenomenon that the boiler burner cannot be ignited when being automatically stopped or ignited is prevented.
Drawings
In order to more clearly describe the embodiments of the present application or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, and the embodiments of the present invention will be further described in detail with reference to the drawings, wherein
FIG. 1 is a schematic view of a defogging device for a flame detector of a boiler burner according to an embodiment of the utility model in use.
In the drawings, the reference numbers:
11. a burner head end cover 12, a combustion chamber 21 and a flame detector mounting base,
31. a probe 41, a spray head 51, an air inlet pipe 61 and a heating device,
71. valve 81, blower 82, air supply pipe.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description will be provided with reference to specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a demisting device for a flame detector for a boiler burner, which includes an air inlet pipe 51, a heating device 61, and a nozzle 41, where the nozzle 41 is disposed in a fixing hole of a flame detector mounting base 21, the flame detector mounting base is provided with a flame detector, a probe of the flame detector is located in a mounting hole of the flame detector mounting base, and the fixing hole is communicated with the mounting hole; the spray hole of the spray head 41 faces to the probe 31 of the flame detector, and the flame detector mounting base is arranged on the combustion chamber 12 of the boiler burner; one end of the air inlet pipe 51 is connected with the spray head 41, the other end of the air inlet pipe 51 is connected with an air supply pipe 82 of a compressed air supply device through the heating device 61, and a valve 71 is arranged on the air supply pipe 82.
When the demisting device for the flame detector for the boiler burner is used, compressed air in the air supply pipe 82 is heated by the heating device when flowing to the air inlet pipe 51 through the heating device, the heated compressed air is blown to the probe of the flame detector through the air inlet pipe and the spray holes of the spray head 41 through the air inlet pipe, and water mist on the probe can be quickly evaporated by the hot compressed air and is always kept in a dry state, so that the probe can well detect the change of the flame intensity in the combustion chamber, and the phenomenon that the boiler burner cannot be fired when being automatically stopped or ignited is prevented.
Further, the heating device 61 comprises a housing, an electric stove wire arranged in the housing, and a power supply for supplying power to the electric stove wire, wherein a control switch is arranged between the power supply and the electric stove wire, one end of the housing is connected with the air inlet pipe, and the other end of the housing is connected with the air supply pipe. By adopting the scheme, only the control switch is needed to be turned on, so that the power supply supplies power to the electric stove wire, the electric stove wire can generate heat, and the compressed air flowing in the shell is heated. It can be understood that the electric stove wire, the power supply and the control switch are connected through a lead; the control switch and the power supply are arranged outside the shell; the shell is used for protecting the electric furnace wire and also has the functions of insulation and heat insulation.
Specifically, the shell is a cylindrical insulating high-temperature-resistant shell. It is understood that the heating device 61 may have other structures as long as the heating device 61 can heat the compressed air.
Further, a potentiometer can be arranged between the control switch and the electric stove wire, and the adjustment of the size of the electrifying current of the electric stove wire can be realized by adjusting the resistance value of the potentiometer, so that the waste of electric energy can be reduced, and the heating intensity of the electric stove wire to the compressed air can be adjusted. It can be understood that two ends of the potentiometer are respectively connected with the control switch and the electric stove wire through wires; the potentiometer is arranged outside the shell. In an embodiment, the valve 71 may be an adjustable valve, and the air intake of the compressed air is adjusted by adjusting the opening of the valve, so as to ensure that the air intake reaches a proper state, thereby better achieving rapid evaporation of water mist on and near the probe; the valve can be a manual valve; the valve can also adopt an electric control valve, the electric control valve is electrically connected with the controller, the air inlet pipe can be provided with an air quantity sensor for detecting the air quantity in the air inlet pipe, the air quantity sensor is electrically connected with the controller, the detected air quantity information in the air inlet pipe is sent to the controller in real time by using the air quantity sensor at the moment, and the controller controls the electric control valve according to the air quantity information, so that the opening degree of the electric control valve is increased or decreased, and the air quantity in the air inlet pipe is kept at a set value.
Preferably, the compressed air supply device is a blower 81. In an embodiment provided by the utility model, the heating device can also be directly connected with a compressed air supply pipeline in a factory building through the air supply pipe, so that an air blower is omitted, parts are reduced, and the cost can be effectively reduced.
Specifically, the nozzle hole is a horn hole. Therefore, the blowing range of the spray holes can be effectively enlarged, hot compressed air blown out from the spray holes can cover the periphery of the probe of the flame detector, moisture in wet air around the probe can be quickly evaporated, the probe of the flame detector can be better ensured to be always in a dry state, and the probe of the flame detector can be enabled to always detect the intensity of flame in the combustion chamber.
Further, a rubber sealing ring is arranged at the joint of the air inlet pipe 51 and the spray head 41, so that the sealant between the air inlet pipe and the spray head is good, and air leakage is effectively avoided.
Specifically, the flame detector mounting base 21 may be provided at the rear end of the combustion chamber; the probe is positioned at the lower end of the flame detector.
In one embodiment, the flame detector mounting base 21 may be disposed on the left side surface or the right side surface of the combustion chamber, so that the distance from the probe of the flame detector to the flame is closer, the signal intensity of the flame detected by the flame detector is greater, the signal is stronger, and the occurrence of shutdown failure can be better avoided; meanwhile, the flame signal can be better prevented from being shielded by a pipeline in the combustor; and at this moment, hot compressed air blown out from the spray holes not only can quickly evaporate water mist on the probe, but also can cool the probe, so that the probe can be better prevented from being overheated, and the service life of the flame detector is effectively ensured.
After the boiler combustion machine is transformed through low nitrogen, because the humidity ratio in the furnace chamber is higher, if only with original flame detector, and do not set up defogging device, cause the phenomenon of shutting down easily or not catching fire a little and take place, though can use the ion stick to detect the intensity of flame, but have the installation of ion stick and dismantle the drawback that the operation is comparatively loaded down with trivial details, work load is big, the adjustment is troublesome, fault rate is high, economic cost height this moment. The utility model can better avoid the disadvantages.
When the utility model is used, before the boiler burner runs, the valve is firstly opened, the blower is started, the heating device is started to heat the compressed air, then the hot compressed air is blown to the probe of the flame detector through the spray holes of the spray head 41 after passing through the air inlet pipe, so that the water mist on the probe of the flame detector is quickly evaporated and is always kept in a dry state, the flame detector can detect the change of the flame intensity in the combustion chamber, and the phenomenon that the flame cannot be fired when the boiler burner is stopped or ignited is avoided. The utility model has simple structure, obvious demisting effect and effectively saved cost.
The above are only preferred embodiments of the present invention, it should be noted that these examples are only for illustrating the present invention and not for limiting the scope of the present invention, and after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalents also fall within the scope of the claims appended to the present application.
Claims (8)
1. A demisting device for a flame detector for a boiler burner is characterized by comprising an air inlet pipe, a heating device and a spray head, wherein the spray head is arranged in a fixing hole of a flame detector mounting base; the spray hole of the spray head faces to the probe of the flame detector, and the flame detector mounting base is arranged on a combustion chamber of the boiler burner; one end of the air inlet pipe is connected with the spray head, the other end of the air inlet pipe is connected with an air supply pipe of the compressed air supply device through the heating device, and a valve is arranged on the air supply pipe.
2. The defogging device for the flame detector of the boiler burner as recited in claim 1, wherein said heating device comprises a housing, a heating wire disposed in said housing, a power source for supplying power to said heating wire, and a control switch disposed between said power source and said heating wire; one end of the shell is connected with the air inlet pipe, and the other end of the shell is connected with the air supply pipe.
3. The defogging device for a flame detector of a boiler burner as recited in claim 2, wherein said housing is a cylindrical, insulating and high temperature resistant housing.
4. The defogging device for a flame detector of a boiler burner as recited in claim 2, wherein a potentiometer is disposed between said control switch and said electric heater wire.
5. The defogging device for a flame detector of a boiler burner as recited in claim 1, wherein said compressed air supply device is a blower.
6. The defogging device for a flame detector of a boiler burner as recited in claim 1, wherein said nozzle holes are trumpet holes.
7. The defogging device for the flame detector of the boiler burner as recited in claim 1, wherein a rubber sealing ring is disposed at a connection position of the air inlet pipe and the nozzle.
8. The flame detector defogging device for a boiler burner as recited in any one of claims 1 to 7, wherein said flame detector mounting base is disposed on a left side surface or a right side surface of said combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123195386.0U CN216592687U (en) | 2021-12-20 | 2021-12-20 | Demisting device for flame detector for boiler burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123195386.0U CN216592687U (en) | 2021-12-20 | 2021-12-20 | Demisting device for flame detector for boiler burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216592687U true CN216592687U (en) | 2022-05-24 |
Family
ID=81614688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123195386.0U Active CN216592687U (en) | 2021-12-20 | 2021-12-20 | Demisting device for flame detector for boiler burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216592687U (en) |
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2021
- 2021-12-20 CN CN202123195386.0U patent/CN216592687U/en active Active
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