CN215863508U - Visual air heater - Google Patents
Visual air heater Download PDFInfo
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- CN215863508U CN215863508U CN202122342136.9U CN202122342136U CN215863508U CN 215863508 U CN215863508 U CN 215863508U CN 202122342136 U CN202122342136 U CN 202122342136U CN 215863508 U CN215863508 U CN 215863508U
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- China
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- air preheater
- video acquisition
- acquisition device
- preheater
- air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model discloses a visual air preheater which comprises a preheater body, and further comprises a controller, a video acquisition device and a purging device, wherein the video acquisition device and the purging device are both arranged at a primary air side inlet and/or a secondary air side inlet of a cold end of the preheater body, the purging device is provided with a spray head, the spray head is arranged in front of the video acquisition device, and the controller is respectively and electrically connected with the video acquisition device and the purging device. Compared with the prior art, the method can visually observe the blockage of the air preheater or the fire during the starting period in time, can eliminate the risk potential hazard as early as possible, reduces the occurrence of fire accidents of the air preheater, can improve the heat exchange efficiency after the blocked air preheater is cleaned in time, and reduces the secondary combustion probability of the air preheater.
Description
Technical Field
The utility model relates to a visual air preheater, and belongs to the technical field of thermal power generation.
Background
Most of air preheaters of boilers in thermal power plants adopt rotary air preheaters. When the air preheater operates, the rotor is sealed in the shell of the air preheater to rotate, the operating data of the air preheater can be measured only by an indirect sensor, and the internal operating condition cannot be visually seen. The blockage of the air preheater can not only reduce the heat exchange efficiency, but also increase the secondary combustion probability of the air preheater, so that operators can timely and visually master the internal operation condition of the air preheater, the risk potential is eliminated as early as possible, and the visualization of the air preheater is very necessary.
In addition, since air preheater fires often occur during cold start-up and after hot standby of the unit, these fires result from the inefficient burning of fuel oil, with the result that the insufficiently burned fuel oil condenses and collects on the components of the air preheater, and as the temperature of the flue gas entering the air preheater increases, the deposited fuel oil deposits become hardened by baking and, upon reaching certain temperature conditions, can ignite these fuel oil deposits, which, if not discovered in time, can cause an air preheater fire to occur. Thus, visualization of the air preheater appears to be more necessary.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a visual air preheater, which can be visually observed in time when the air preheater is blocked or a fire breaks out during the starting period, so that the risk potential can be eliminated as early as possible, and the occurrence of fire accidents of the air preheater is reduced.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a visual air heater, includes the pre-heater body, still includes controller, video acquisition device and sweeps the device, video acquisition device all sets up with the device that sweeps the cold junction primary air side import and/or the secondary air side import department of pre-heater body, it is equipped with the shower nozzle to sweep the device, the shower nozzle sets up video acquisition device's the place ahead, the controller respectively with video acquisition device with sweep the device electricity and be connected.
Preferably, the video acquisition device is a high-temperature resistant camera or a high-definition industrial camera.
Furthermore, the video acquisition device also comprises a high-temperature-resistant light supplement lamp.
Furthermore, the blowing device is connected to a compressed air pipeline through a cooling air pipe, and compressed air is introduced into the compressed air pipeline.
Preferably, the pressure and flow rate of the compressed air are 0.5MPa and 1.0m, respectively3/h。
Further, the normal working temperature of the video acquisition device is not lower than 500 ℃.
Furthermore, the field angle of the video acquisition device is 10-60 degrees.
Preferably, the model specification of the video acquisition device is ZHT-SXT.
Furthermore, a control box is arranged on a platform of a running layer of the air preheater, the controller is arranged inside the control box, a touch screen is arranged on a panel of the control box, and the touch screen is electrically connected with the controller.
Further, the controller is connected to the DCS through a signal line or a network line.
Compared with the prior art, the video acquisition device and the corresponding matched equipment are arranged, so that the video acquisition device can visually observe the situation in time when the air preheater is blocked or the fire is on during the starting period, the risk potential can be eliminated as early as possible, and the occurrence of fire accidents of the air preheater is reduced. The blocked air preheater can be cleaned in time, the heat exchange efficiency can be improved, and the secondary combustion probability of the air preheater is reduced.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present invention.
Fig. 2 is a block diagram of a control system according to embodiment 1 of the present invention.
Shown in the figure: 1 is the pre-heater body, 2 is the video acquisition device, 3 is the device that sweeps, 4 is the cooling air pipe, 5 is the compressed air pipeline, 6 is the control box, 7 is the touch-sensitive screen, 8 is DCS, 9 is the import of primary air side, 10 is the import of overgrate air side, 11 is the export of primary air side, 12 is the export of overgrate air side, 13 is the import of flue gas side, 14 is the export of flue gas side.
Detailed Description
Preferred embodiments of the present invention are described in detail below.
Example 1: referring to fig. 1-2, a visual air heater, includes pre-heater body 1, still includes controller, video collection device 2 and sweeps device 3, video collection device 2 and sweep device 3 all set up the cold junction primary air side import 9 and/or the secondary air side import 10 department of pre-heater body 1, sweep device 3 is equipped with the shower nozzle, the shower nozzle sets up video collection device 2 the place ahead, the controller respectively with video collection device 2 and sweep device 3 electricity and be connected. Preferably, the video acquisition device 2 is a high-temperature resistant camera or a high-definition industrial camera. The video acquisition device 2 further comprises a high-temperature-resistant light supplement lamp. In order to prevent the air preheater from generating fire accidents, except that operators strengthen operation, the combustion working conditions such as air ratio and coal ratio are adjusted, an observation port is additionally arranged at the hot end of the air preheater, and field inspection is strengthened, high-definition cameras are additionally arranged at the primary air side and the secondary air side at the cold end of the air preheater, which are inconvenient for field inspection, and the image signals are input into a large screen of a centralized control room for display, so that the operators can monitor the operation conditions of the primary air side and the secondary air side at the cold end of the air preheater in real time and carry out timely operation working condition adjustment.
Wherein the blowing device 3 is connected to a compressed air pipeline 5 through a cooling air pipe 4, and the compressed air pipeline 5 is internally provided withCompressed air is introduced into the chamber. Preferably, the pressure and flow rate of the compressed air are 0.5MPa and 1.0m, respectively3H is used as the reference value. Compressed air can follow compressed air pipeline 5 and get into cooling air pipe 4, and the rethread blows the shower nozzle of sweeping device 3 and sweeps video acquisition device 2 and high temperature resistant light filling lamp in real time to reduce the temperature of video acquisition device 2 and high temperature resistant light filling lamp and blow off the dust, guarantee the normal operating of equipment.
The normal working temperature of the video acquisition device 2 is not lower than 500 ℃, the high-temperature environment in the air preheater can be resisted, and the normal operation of equipment in the high-temperature environment is ensured. The field angle of the video acquisition device 2 is 10-60 degrees, and the internal structure of the air preheater can be well observed under the field angle.
The air preheater control system is characterized in that a control box 6 is arranged on a platform of a running layer of the air preheater, the controller is arranged inside the control box 6, a touch screen 7 is arranged on a panel of the control box 6, and the touch screen 7 is electrically connected with the controller. Wherein the controller is connected to the DCS8 through a signal line or a network cable. The start and stop of the equipment can be controlled locally through a touch screen 7 on the controller, and can also be controlled remotely through the DCS 8. DCS is a short for distributed control system, is a control device commonly used in industrial field, and is more convenient to control or monitor after video signals are connected to DCS.
The system mainly comprises equipment such as industrial display, memory, high temperature resistant camera, high definition industrial camera, high temperature resistant light filling lamp. The type specification of the high-definition video probe is preferably ZHT-SXT, the high-definition video probe comprises a video probe, a high-definition camera, a blowing device 3 and a probe sleeve assembly, and a cold end of each air preheater is provided with one set. The model specification of the light supplementing assembly is preferably ZHT-BGD, and the light supplementing assembly comprises a light source, a light source transmission medium and a light supplementing sleeve assembly, wherein each preheater is provided with 2 sets. The model specification of the gas source purging device 3 is preferably ZHT-QY, and comprises fittings such as valves, filters, joints and the like. The model specification of the control box 6 is preferably ZHT-C, and the interior of the control box is provided with necessary accessories such as an exchanger, a power supply and the like besides the controller, and the model of the power supply is preferably 220VAC 1 KVA. The control box 6 needs to be installed on the air preheater operation level platform to facilitate the inspection of the equipment by operators.
When the utility model is installed, the control box 6 is installed firstly, and the control box 6 is installed on the platform of the operation layer, thus being convenient for use. And then installing a cold end visualization device, such as a sensor and a light supplement component. And then laying a cooling air pipeline and a visualization device cable, wherein the cable comprises a video cable and an infrared sensor cable. And after the work is finished, the system is electrified and debugged.
When the air preheater works, air enters from a primary air side inlet 9 and a secondary air side inlet 10 at the cold end of the preheater body 1, and is discharged from a primary air side outlet 11 and a secondary air side outlet 12 after being preheated. Flue gas generated by insufficient combustion of fuel oil enters the preheater body 1 from the flue gas side inlet 13 and is discharged out of the preheater body 1 from the flue gas side outlet 14. The rotor is sealed and is rotary motion in preheater body 1 during air heater operation, owing to set up video acquisition device 2, air heater operational aspect can carry out visual observation through video acquisition device 2. The operating personnel can timely and intuitively master the internal operation condition of the air preheater, and if the air preheater is blocked, the air preheater can find and eliminate the risk hidden trouble as early as possible. The blocked air preheater can be cleaned in time, the heat exchange efficiency can be improved, and the secondary combustion probability of the air preheater is reduced. In addition, the insufficient combustion of the fuel oil of the air preheater can cause the fuel oil which is not fully combusted to be condensed and gathered on the components of the air preheater, if fire occurs during the cold-state starting of the unit and the starting period after hot standby, the visual observation can be carried out through the video acquisition device 2, and the occurrence of fire accidents of the air preheater is reduced.
According to the utility model, by arranging the video acquisition device 2 and corresponding supporting equipment, when the air preheater is blocked or a fire breaks out during the starting period, the visual observation can be carried out in time, the risk potential can be eliminated as early as possible, and the occurrence of fire accidents of the air preheater is reduced. The blocked air preheater can be cleaned in time, the heat exchange efficiency can be improved, and the secondary combustion probability of the air preheater is reduced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (10)
1. A visual air preheater, includes preheater body (1), its characterized in that: still include controller, video acquisition device (2) and sweep device (3) and all set up cold junction primary air side import (9) and/or secondary air side import (10) department of preheater body (1), sweep device (3) and be equipped with the shower nozzle, the shower nozzle sets up the place ahead of video acquisition device (2), the controller respectively with video acquisition device (2) and sweep device (3) electricity and be connected.
2. A visual air preheater as set forth in claim 1, wherein: the video acquisition device (2) is a high-temperature-resistant camera or a high-definition industrial camera.
3. A visual air preheater as set forth in claim 2, wherein: the video acquisition device (2) further comprises a high-temperature-resistant light supplement lamp.
4. A visual air preheater as set forth in claim 1, wherein: the blowing device (3) is connected to a compressed air pipeline (5) through a cooling air pipe (4), and compressed air is introduced into the compressed air pipeline (5).
5. A visual air preheater according to claim 4, wherein: the pressure and flow rate of the compressed air are 0.5MPa and 1.0m respectively3/h。
6. A visual air preheater as set forth in claim 1, wherein: the normal working temperature of the video acquisition device (2) is not lower than 500 ℃.
7. A visual air preheater as set forth in claim 1, wherein: the field angle of the video acquisition device (2) is 10-60 degrees.
8. A visual air preheater as set forth in claim 1, wherein: the model specification of the video acquisition device (2) is ZHT-SXT.
9. A visual air preheater according to any one of claims 1-8, wherein: the air preheater is characterized in that a control box (6) is arranged on a platform on a running layer of the air preheater, the controller is arranged inside the control box (6), a touch screen (7) is arranged on a panel of the control box (6), and the touch screen (7) is electrically connected with the controller.
10. A visual air preheater as set forth in claim 9, wherein: the controller is connected to the DCS (8) through a signal line or a network cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122342136.9U CN215863508U (en) | 2021-09-26 | 2021-09-26 | Visual air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122342136.9U CN215863508U (en) | 2021-09-26 | 2021-09-26 | Visual air heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215863508U true CN215863508U (en) | 2022-02-18 |
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ID=80261179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122342136.9U Active CN215863508U (en) | 2021-09-26 | 2021-09-26 | Visual air heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215863508U (en) |
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2021
- 2021-09-26 CN CN202122342136.9U patent/CN215863508U/en active Active
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