CN211988017U

CN211988017U - High-temperature flue gas abrasion blocking condition online monitoring system

Info

Publication number: CN211988017U
Application number: CN202020257882.0U
Authority: CN
Inventors: 彭峻; 范慧; 彭伟; 易作宏
Original assignee: Hunan Anpunuo Environmental Protection Technology Co ltd
Current assignee: Hunan Anpunuo Environmental Protection Technology Co ltd
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2020-11-24
Anticipated expiration: 2030-03-05

Abstract

The utility model relates to the technical field of flue gas treatment, in particular to an online monitoring system for the abrasion and blockage condition of high-temperature flue gas, which comprises an imaging device, a telescopic fixing mechanism and a data processing and displaying device; the telescopic fixing mechanism comprises a mounting sleeve, a bracket, a cylinder, a telescopic pipe and a pull rod; the installation sleeve is installed on the flue wall, one end of the installation sleeve penetrates through the flue wall and extends into the flue, the other end of the installation sleeve is connected with the support, the support is provided with an air cylinder, the telescopic pipe is connected with the air cylinder and is controlled to move in the installation sleeve through the air cylinder, one end of the pull rod is fixed on the flue wall, and the other end of the pull rod is connected with the support and used for fixing the support; the imager is arranged at one end of the telescopic pipe entering the installation sleeve and is connected with the data processing and displaying device through a data line. The utility model provides a but the wearing and tearing condition on real-time supervision abrasionproof water conservancy diversion layer of device can long-time continuous monitoring, avoids unnecessary blowing out the inspection, and components and parts in the device are movable installation, can withdraw from state quick replacement at the imager.

Description

High-temperature flue gas abrasion blocking condition online monitoring system

Technical Field

The utility model relates to a flue gas processing technology field, concretely relates to online monitored control system of high temperature flue gas wearing and tearing jam condition.

Background

Modern industrial production generates a plurality of high-temperature dust-containing flue gases which need to be subjected to necessary technical treatment to realize economic, environmental and social benefits. For example, Selective Catalytic Reduction (SCR) is the most widely used flue gas denitration technology in the world, and is basically used in most power plants in japan, europe, usa and other countries, and has the advantages of no by-product, no secondary pollution, simple device structure, high removal efficiency, reliable operation, convenient maintenance and the like. However, the core part of the technology is the denitration catalyst, the catalyst is generally sold at a higher price in the market, particularly, the middle-low temperature catalyst is more expensive, and a mode of arrangement in a high ash section is mostly adopted in actual production, so that the problems of catalyst abrasion and blockage are often difficult to avoid in the long-term operation process of the SCR denitration device, especially when the problems exist in the aspects of improper design, insufficient operation and maintenance experience and the like, the catalyst abrasion and blockage are further aggravated, the adverse effect is generated on the safe and stable operation of the denitration device and other production equipment (such as a generator set, a boiler and the like), and the production cost is increased. In order to solve the problem of abrasion of the catalyst, an abrasion-proof flow guide layer is additionally arranged on the upper part of the catalyst. Because the flue gas at the inlet of the reactor is difficult to be uniformly distributed, the abrasion-proof flow guide layer can also generate local abrasion, and then the abrasion-proof flow guide layer is abraded to the catalyst. In order to avoid such events, the owners can only stop the boiler periodically for inspection, which causes obstruction to the continuous operation of the boiler at the present stage and reduces the economic benefit. In order to detect and find the blockage and abrasion of the catalyst without stopping the furnace, it is necessary to invent a high-temperature flue gas abrasion blockage online monitoring system, which can monitor the blockage and abrasion of the catalyst in real time.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the background art and provide an online monitoring system for the high-temperature flue gas abrasion and blockage condition.

The technical scheme of the utility model is that: an online monitoring system for the abrasion and blockage condition of high-temperature flue gas comprises an imaging device, a telescopic fixing mechanism and data processing and displaying equipment; the imaging device comprises an imager and an illuminating lamp; the telescopic fixing mechanism comprises a mounting sleeve, a bracket, a cylinder, a telescopic pipe and a pull rod; the installation sleeve is installed on the flue wall, one end of the installation sleeve penetrates through the flue wall and extends into the flue, the other end of the installation sleeve is connected with the support, the support is provided with an air cylinder, the telescopic pipe is connected with the air cylinder and is controlled to move in the installation sleeve through the air cylinder, one end of the pull rod is fixed on the flue wall, and the other end of the pull rod is connected with the support and used for fixing the support; the imager is arranged at one end of the telescopic pipe entering the installation sleeve and is connected with the data processing and displaying device through a data line.

Furthermore, the imager adopts one or more of a thermal infrared imager, an infrared imager, a ray imaging camera and a visible light camera, and is selected according to the actual situation; the illuminating lamp and the imager are fixed at the foremost end of the telescopic pipe, and can be pushed into the furnace for illumination and shooting during working through the cylinder, and can be controlled to exit from the furnace wall through the cylinder when not in use.

Furthermore, the installation sleeve is a high-temperature-resistant steel pipe with the diameter of 50-100 mm, penetrates through the flue wall obliquely during installation and extends into the flue, and the included angle between the installation sleeve and the flue wall is 30-60 degrees and can be determined according to the size design of the flue.

Furthermore, the telescopic pipe is of a hollow structure, and the data line penetrates through the inside of the telescopic pipe to be connected with the imaging device and the data processing and displaying mechanism.

Furthermore, one end of the installation sleeve, which does not extend into the flue, is provided with a sleeve cooling air inlet, one end of the telescopic pipe, which is connected with the air cylinder, is also provided with a telescopic pipe cooling air inlet, and cooling air is blown into the telescopic pipe cooling air inlet to prevent high-temperature flue gas from baking equipment and data lines

Furthermore, the system also comprises a cooling system for generating cooling air, wherein the cooling air can adopt various compressed air or be connected from a primary air main pipe of the boiler, and a cooling fan can be arranged independently.

Furthermore, the bracket is made of carbon steel or stainless steel plates, the cylinder is also provided with a cylinder travel switch and a data line slip ring device, and the cylinder can adopt a single-rod double-head cylinder or a single-rod single-head cylinder; if a single-rod double-head cylinder is adopted, two ends of a cylinder rod are fixed on the bracket, the cylinder slides on the rod, and the end part of the cylinder fixes the telescopic pipe through a connecting piece to drive the telescopic pipe to move forwards and backwards; if a single-rod single-head cylinder is adopted, the cylinder is fixed on the support, and the front end of the cylinder rod is fixedly provided with a telescopic pipe to drive the telescopic pipe to move forwards and backwards.

Furthermore, the data lines are all high-temperature-resistant shielding data lines.

Further, the mounting sleeve is arranged in the flue at a height position of about 0.5-1.5m above the monitoring target.

Furthermore, at least two sets of imaging devices and telescopic fixing mechanisms are provided, and the monitoring task is completed by dividing regions and angles.

Further, the data processing and displaying equipment comprises a computer, a video recorder and a mobile terminal; the video recorder is a machine connected with a plurality of sets of imaging equipment, signals of the video recorder are sent to a computer through signal lines, the blocking and abrasion conditions of the flow equalizing anti-abrasion layer and the catalyst can be observed in real time on the computer, so that effective soot blowing and ash cleaning measures can be taken timely, or whether the furnace is shut down and the anti-abrasion layer is replaced can be determined, the measures can be transmitted to a mobile phone terminal through a wireless network, managers can check the abrasion conditions in real time in offices or in different places, and decision making and management are facilitated.

The utility model has the advantages that: the invention provides an online monitoring system for the abrasion and blockage condition of high-temperature flue gas, which can monitor the abrasion condition of an abrasion-proof flow guide layer in real time and avoid unnecessary furnace shutdown inspection. Since the device takes into account a cooling device, it can be monitored continuously for a long time. The components and parts in the device are movably installed and can be quickly replaced in the exit state of the imager. The whole system is arranged on the outer wall of the reactor, so that the installation and debugging can be carried out when the boiler operates, and the normal operation of the boiler is not influenced. Through the arrangement of the positions and the number of the imaging devices, the observation without dead angles can be realized. Further, through the real-time observation to catalyst abrasionproof water conservancy diversion layer wearing and tearing in the reactor, the observation data can be used to the guide plate design and provide the technical basis, thereby let the interior air distribution of flue more even, further carry out the optimal design of guide plate, so that the local wear problem on abrasionproof layer is solved to the later stage, the live time on abrasionproof layer is prolonged, simultaneously can obtain the deposition condition on abrasionproof water conservancy diversion layer through surveing, combine the soot blower system, can keep the best soot blowing time for a long time, effectively prevent the too much or blow the too frequent condition of soot.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic view of the embodiment 1 of the present invention during installation.

In the figure: 1-flue wall, 2-installation sleeve, 3-sleeve cooling air inlet, 4-imaging device, 5-telescopic pipe, 6-telescopic pipe cooling air inlet, 7-support, 8-cylinder, 9-data line, 10-travel switch, 11-diagonal draw bar, 12-video recorder, 13-computer, 14-mobile terminal.

Detailed Description

The present invention will be described in further detail with reference to the drawings and specific embodiments, wherein components or systems not specifically described in the present embodiment are known in the art.

Example 1

As shown in the figures, the utility model discloses a specific embodiment when being used for the online monitoring of SCR denitration catalyst abrasionproof water conservancy diversion layer, imaging device 4 in the embodiment includes thermal infrared imager and light, and flexible fixed establishment includes mounting sleeve 2, support 7, cylinder 8, flexible pipe 5 and pull rod 11; the installation sleeve 2 is installed on the flue wall 1, one end of the installation sleeve penetrates through the flue wall 1 and extends into a flue, the other end of the installation sleeve is connected with a support 7, the support 7 is provided with a cylinder 8, the telescopic pipe 5 is connected with the cylinder 8, the telescopic pipe 5 is controlled by the cylinder 8 to move in the installation sleeve 2, one end of a pull rod 11 is fixed on the flue wall 1, and the other end of the pull rod is connected with the support 7 and used for fixing the support 7; the thermal infrared imager and the illuminating lamp are arranged at one end of the telescopic pipe 5, which enters the installation sleeve 2, and are connected with the data processing and displaying device through a data line 9.

The installation sleeve 2 of this embodiment is a high temperature resistant steel pipe of phi 50, passes flue wall 1 during installation to stretch into the flue to one side, and installation sleeve 2 is 40 degrees with flue wall 1 contained angle. The mounting sleeve 2 is arranged on the wall at a height of about 1 m above the wear-resistant flow guiding layer in the flue. The infrared thermal imager probe is kept within 10mm-20mm in the end part of the outer sleeve when in normal operation, the infrared thermal imager probe can pass through the telescopic pipe 5 to exit the flue wall 1 when not used, a sleeve cooling air inlet 3 is arranged at one end of the installation sleeve 2 which does not extend into the flue, a telescopic pipe cooling air inlet 6 is also arranged at one end of the telescopic pipe 5 which is connected with the air cylinder 8, cooling air is blown into the telescopic pipe cooling air inlet, so that high-temperature flue gas can be prevented from baking equipment and a data line 9, and the data line 9 is completely shielded by adopting a high.

The support 7 of this embodiment is the corrosion resistant plate preparation, still is equipped with

cylinder travel switch

10 and 9 sliding ring devices of data line on the cylinder 8, and cylinder 8 adopts single pole double-end cylinder 8, and 8 pole both ends of cylinder are fixed on support 7, and cylinder 8 slides on the pole, and 8 tip of cylinder pass through the fixed flexible pipe 5 of connecting piece, drive flexible pipe 5 and advance and retreat.

The imaging device 4 and the telescopic fixing mechanism of the embodiment are provided with two sets, the imaging device and the telescopic fixing mechanism are symmetrically arranged on the flue wall 1 in the left-right direction, the included angle between the installation sleeve 2 and the flue wall 1 is 40 degrees, and the observation angle is ensured to be within the range of the dotted line in the attached drawing 2, so that the abrasion condition of the whole abrasion-proof flow guide layer can be observed, and the images are uniformly transmitted to the video recorder 12 through the data line and then are sent to the computer 13 or the mobile terminal 14 (such as a mobile phone) after the synthetic processing.

The system can also be used for observing and monitoring the abrasion and blockage conditions of heat exchange equipment in any flue on line, such as the windward side abrasion observation and dust deposition observation of all heat exchange equipment and tube bundles of a boiler economizer, an air preheater, energy savers of various kilns, a coal economizer and the like. The abrasion and dust deposition conditions of the wear-resistant sheet of the coal economizer can be mastered in real time, and the optimal dust blowing time can be obtained by combining a dust blowing system. The effects of saving gas and electricity are achieved. The system can also be used in any other occasions where dust is much and conventional observation is difficult to reach, such as internal observation of equipment, kilns, pipelines and the like.

It is obvious that the above are only some embodiments of the present invention, and are not used for limiting the present invention, and for those skilled in the art, the present invention can have the combination and modification of the above various technical features, and those skilled in the art can replace the modifications, equivalents, or use the structure or method of the present invention in other fields to achieve the same effect without departing from the spirit and scope of the present invention, and all belong to the protection scope of the present invention.

Claims

1. The utility model provides a high temperature flue gas wearing and tearing jam condition on-line monitoring system which characterized in that: the device comprises an imaging device, a telescopic fixing mechanism and data processing and displaying equipment; the imaging device comprises an imager and an illuminating lamp; the telescopic fixing mechanism comprises an installation sleeve, a bracket, a cylinder, a telescopic pipe and a pull rod; the installation sleeve is installed on the flue wall, one end of the installation sleeve penetrates through the flue wall and extends into the flue, the other end of the installation sleeve is connected with the support, the support is provided with an air cylinder, the telescopic pipe is connected with the air cylinder and is controlled to move in the installation sleeve through the air cylinder, one end of the pull rod is fixed on the flue wall, and the other end of the pull rod is connected with the support and used for fixing the support; the imaging device is arranged at one end of the telescopic pipe entering the installation sleeve and is connected with the data processing and displaying equipment through a data line.

2. The on-line monitoring system for the high-temperature flue gas abrasion blocking condition as claimed in claim 1, wherein: the imager adopts one or more of a thermal infrared imager, an infrared imager, ray imaging and a visible light camera.

3. The on-line monitoring system for the high-temperature flue gas abrasion blocking condition as claimed in claim 1, wherein: the mounting sleeve is a high-temperature-resistant steel pipe with the diameter of 50-100 mm, penetrates through the flue wall obliquely during mounting and extends into the flue, and the included angle between the mounting sleeve and the flue wall is 30-60 degrees.

4. The on-line monitoring system for the high-temperature flue gas abrasion blocking condition as claimed in claim 1, wherein: the system also comprises a cooling system which is used for providing cooling wind.

5. The on-line monitoring system for the high-temperature flue gas abrasion blocking condition as claimed in claim 1, wherein: the telescopic pipe is of a hollow structure, and the data line penetrates through the telescopic pipe to connect the imaging device and the data processing and displaying mechanism.

6. The on-line monitoring system for the high-temperature flue gas abrasion blocking condition as claimed in claim 5, wherein: and all the data wires adopt high-temperature-resistant shielding data wires.

7. The on-line monitoring system for the high-temperature flue gas abrasion blocking condition as claimed in claim 4, wherein: one end of the telescopic pipe connected with the cylinder is provided with a telescopic pipe cooling air inlet, and one end of the mounting sleeve not extending into the flue is provided with a sleeve cooling air inlet.

8. The on-line monitoring system for the high-temperature flue gas abrasion blocking condition as claimed in claim 1, wherein: the mounting sleeve is arranged on the flue at a height position which is 0.5-1.5m above the monitoring target.

9. The on-line monitoring system for the high-temperature flue gas abrasion blocking condition as claimed in claim 1, wherein: at least two sets of imaging devices and telescopic fixing mechanisms are provided, and the monitoring task is completed by regions and angles.

10. The on-line monitoring system for the high-temperature flue gas abrasion blocking condition as claimed in claim 1, wherein: the data processing and displaying equipment comprises a computer, a video recorder and a mobile terminal.