CN213924891U - Visual monitoring device and visual monitoring system suitable for smelting reduction furnace - Google Patents
Visual monitoring device and visual monitoring system suitable for smelting reduction furnace Download PDFInfo
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- CN213924891U CN213924891U CN202022809331.3U CN202022809331U CN213924891U CN 213924891 U CN213924891 U CN 213924891U CN 202022809331 U CN202022809331 U CN 202022809331U CN 213924891 U CN213924891 U CN 213924891U
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Abstract
The application provides a visual monitoring device and a visual monitoring system suitable for a smelting reduction furnace. The monitoring device comprises a device body, a sealing assembly, a monitoring assembly, a loading and unloading valve, a blowing assembly, a cooling assembly and the like, wherein the device body is provided with an accommodating cavity; the sealing assembly is arranged at the top of the accommodating cavity and comprises a high-temperature-resistant sealing ring for sealing the accommodating cavity; the monitoring assembly is arranged at the bottom of the inner side of the accommodating cavity and comprises a thermal imager for monitoring the condition in the melting reduction furnace; the loading and unloading valve sleeve is arranged at the upper part of the accommodating cavity to install or disassemble the monitoring assembly; the blowing assembly is arranged below the loading and unloading valve and comprises a blowing pipeline communicated with the containing cavity so as to blow gas into the containing cavity; the cooling assembly is sleeved outside the accommodating cavity and comprises a cooling liquid circulating pipeline for cooling the monitoring assembly; the fixing member is fitted over the outside of the cooling block to fix the monitoring device to the smelting reduction furnace. The monitoring device can adapt to the severe environment in the SRV furnace, acquire images in the SRV furnace in the production process and monitor the conditions in the furnace.
Description
Technical Field
The utility model relates to a visual control technical field especially relates to a visual monitoring devices and visual monitoring system suitable for smelting reduction furnace.
Background
The HIsmelt reduction process is one of the metallurgical technologies which realize industrial production, is the only new metallurgical technology which does not use coke and sinter at present, and belongs to the leading-edge technology of the current metallurgical field. The HIsmelt reduction process utilizes non-coking coal powder and iron ore powder to produce liquid pig iron in a jet metallurgy mode, has short process, little pollution and good molten iron quality, and is an advanced iron making technology for solving the problems of limited coking coal resources and environmental protection in China.
The core reactor of the HIsmelt process is a smelting reduction furnace (SRV furnace). Currently, there is a lack of effective monitoring devices for conditions within the smelting reduction furnace. In the production process of the smelting reduction furnace, the production state in the furnace cannot be observed and obtained, and the state of the Yongquan in the furnace cannot be known. Even when the smelting reduction furnace is stopped, it is difficult to obtain the conditions in the furnace because the temperature in the furnace is too high.
The core of the existing furnace top visual monitoring technology used on a blast furnace is to use an infrared camera to detect. However, the conventional infrared camera is difficult to adapt to the severe environment in the melting reduction furnace. The smelting reduction furnace is designed according to a pressure container, the environment in the smelting reduction furnace is worse than that in the smelting reduction furnace, a high-temperature gas environment is arranged above a molten pool in the smelting reduction furnace, the highest temperature of coal gas can reach 1800 ℃, and the coal gas contains dust with the dust content of 30g/Nm3The dust particle is less than 3 mm. In addition, due to the technological characteristics of forming the mixed Yongquan in the smelting reduction furnace, molten slag, iron liquid drops and the like are splashed in the furnace. The existing visual monitoring technology used on the blast furnace can not overcome the severe environment in the smelting reduction furnace, and the existing visual monitoring device can not be normally used.
Therefore, there is a need to develop a new visual monitoring device and a new visual monitoring system for a smelting reduction furnace, which overcome and/or ameliorate one or more of the above disadvantages of the prior art, or at least provide an effective alternative to solve the above problems.
SUMMERY OF THE UTILITY MODEL
To foretell not enough, the utility model provides a visual monitoring devices and visual monitoring system suitable for smelting reduction furnace. The application provides a visual monitoring devices suitable for smelting reduction furnace can acquire the furnace image in the smelting reduction furnace production process, monitors the erosion condition of parts such as spray gun, cooling plate, copper cooling wall and lining structure in the smelting reduction furnace in real time. The application provides a visual monitoring system can ensure monitoring devices's continuous normal use, realizes the condition in real time on-line monitoring stove, and record and storage detection image supplies historical inquiry, analysis and data to file to guide the normal operating of technology production better.
The utility model discloses a realize through following technical scheme:
an aspect of the embodiment of the present invention provides a visual monitoring device suitable for smelting reduction furnace, wherein, include:
the device comprises a device body, wherein an accommodating cavity is formed in the device body;
the sealing assembly is arranged at the top of the accommodating cavity and comprises a high-temperature-resistant sealing ring for sealing the accommodating cavity;
the monitoring assembly is arranged at the bottom of the inner side of the accommodating cavity and comprises a thermal imager used for monitoring the condition in the melting reduction furnace;
the loading and unloading valve is sleeved on the upper part of the accommodating cavity and used for installing or disassembling the monitoring assembly;
the blowing assembly is arranged below the loading and unloading valve and comprises a blowing pipeline communicated with the accommodating cavity and used for blowing gas into the accommodating cavity;
the cooling assembly is sleeved outside the accommodating cavity and comprises a cooling liquid circulating pipeline for cooling the monitoring assembly;
the fixing piece is sleeved on the outer side of the cooling assembly and used for fixing the visual monitoring device to the smelting reduction furnace.
In a preferred implementation of the visual monitoring device, the thermal imager is a thermal infrared imager, and the thermal infrared imager includes an uncooled focal plane detector and a dedicated lens.
In a preferred implementation manner of the visual monitoring device, the cooling assembly further comprises a liquid inlet and a liquid outlet, and the liquid inlet and/or the liquid outlet can be connected with a cooling liquid circulation system of the smelting reduction furnace.
In a preferred implementation of the visual monitoring device, the blowing assembly further comprises:
the gas pressure stabilizing tank is connected with the blowing pipeline and is used for enabling the gas pressure in the accommodating cavity to be higher than the smoke pressure in the melting reduction furnace;
the electric valve is arranged on the blowing pipeline and can receive control signals to blow the monitoring assembly.
In a preferred implementation of the visual monitoring device, the gas injected by the injection assembly is nitrogen.
In a preferred implementation, the visual monitoring apparatus further includes:
the signal transmission device is arranged on the upper part of the device body and is used for signal connection with external equipment;
and the signal processing device is arranged below the signal transmission device and is used for processing the signal detected by the monitoring component.
The embodiment of the utility model provides a visual monitoring system of smelting reduction furnace on the other hand, wherein, the visual monitoring system of smelting reduction furnace includes the smelting reduction furnace body and as above-mentioned arbitrary be applicable to the visual monitoring device of smelting reduction furnace, visual monitoring device bayonet set up in smelting reduction furnace body upper portion.
In a preferred implementation manner of the visual monitoring system, a plurality of visual monitoring devices are arranged on the upper portion of the smelting reduction furnace body, and the visual monitoring devices are uniformly distributed and installed with a vertical shaft of the smelting reduction furnace as a center.
In a preferred implementation manner, the visual monitoring system further comprises a gas circulation system and a cooling liquid circulation system, wherein the gas circulation system is connected with the blowing assembly; the cooling liquid circulation system is connected with the cooling assembly.
In a preferred implementation manner, the visual monitoring system further includes a data transmission device, a data processing device, a data storage device and an alarm device, wherein the data transmission device is connected with the signal transmission device; the data processing device is connected with the data transmission device; the data storage device is connected with the data processing device; the alarm device is respectively connected with the data processing device and the data storage device and used for sending out overtemperature alarms.
Through the embodiment of the utility model provides a technical scheme can reach following beneficial effect:
(1) the visual monitoring device applicable to the smelting reduction furnace provided by the embodiment of the utility model can effectively observe and acquire the production state in the smelting reduction furnace in the production process by arranging the monitoring assembly in the accommodating cavity; the monitoring assembly is cooled by the cooling assembly, so that the monitoring assembly can be ensured to stably run for a long time; further carry out the jetting cooling protection to the monitoring subassembly through setting up jetting subassembly on the one hand, on the other hand jets the deashing to the monitoring subassembly, prevents that the camera lens of monitoring subassembly from becoming grey and influencing the monitoring picture. In addition, the monitoring assembly can be conveniently maintained and replaced by arranging the loading and unloading valve; correspondingly, the sealing assembly can prevent the reaction gas in the smelting reduction furnace from leaking out through the containing cavity to cause dangerous conditions. The visual monitoring device suitable for the smelting reduction furnace is suitable for high-temperature, high-dust and pressure environments in the smelting reduction furnace through the integral design, can effectively cool and protect the monitoring assembly, ensures that the monitoring assembly is continuously and normally used, monitors the conditions in the furnace in real time, and guides the long-term stable operation of the process production of the smelting reduction furnace.
(2) The embodiment of the utility model provides a visual monitoring devices suitable for smelting reduction furnace adopts thermal infrared imager, can adapt to the 1800 ℃ adverse circumstances in the smelting reduction furnace, has anti dust interference ability, can obtain in the production process more clear image in the smelting reduction furnace.
(3) The embodiment of the utility model provides a visual monitoring devices suitable for smelting reduction furnace of example, inlet and/or liquid outlet can be connected with the coolant liquid circulation system of smelting reduction furnace, can simplify the structure of device like this effectively, makes the device be applicable to smelting reduction furnace better.
(4) The embodiment of the utility model provides a visual monitoring system of smelting reduction furnace installs visual monitoring devices at the furnace body upper portion conic section of smelting reduction furnace, can make visual monitoring devices keep away from the molten bath of smelting reduction furnace bottom, has alleviateed the heat radiation like this effectively, has avoided liquid slag or iron to drip to visual monitoring devices on, is convenient for protect visual monitoring devices and the monitoring subassembly on it.
(5) The embodiment of the utility model provides a visual monitoring system of smelting reduction furnace through the visual monitoring devices who sets up a plurality of evenly distributed, can avoid device installation angle and visual angle's restriction effectively, makes and all can be monitored near cooling plate, copper cooling wall and the inside lining etc. of this side of every device.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is a schematic structural diagram illustrating a visual monitoring apparatus for a smelting reduction furnace according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram illustrating a visual monitoring system for a smelting reduction furnace according to an embodiment of the present invention.
Reference numerals:
10-a visual monitoring device; 11-a containment chamber; 12-a sealing assembly; 13-a monitoring component; 14-loading and unloading valves; 15-a blowing assembly; 16-a cooling assembly; 17-a fixing member; 18-signal transmission means; 19-signal processing means;
151-gas surge tank; 152-an electrically operated valve; 153-manual shut-off valve;
20-a smelting reduction furnace body;
30-a gas circulation system;
40-a cooling liquid circulation system;
50-a data transmission device;
60-a data processing device;
70-a data storage device;
80-alarm device.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
First, the technical concept of the present invention will be explained. At present, an effective monitoring device is lacked for the condition in the melting reduction furnace, the production state in the furnace cannot be observed and obtained in the production process, and the state of the Yongquan in the furnace and the like cannot be known. Even when the smelting reduction furnace is stopped, it is difficult to obtain the conditions in the furnace because the temperature in the furnace is too high. The existing visual monitoring technology suitable for the blast furnace is difficult to adapt to the severe environment in the smelting reduction furnace. The smelting reduction furnace is designed according to a pressure container, a high-temperature and high-dust gas environment is arranged above a molten pool in the furnace, and the gas is generatedThe highest temperature can reach 1800 ℃, and the coal gas contains dust with the dust content of 30g/Nm3The dust particle is less than 3 mm. In addition, molten slag, iron droplets, and the like may be splashed in the furnace. The existing visual monitoring technology used on the blast furnace can not overcome the severe environment in the smelting reduction furnace and can not be normally used.
Therefore, there is a need to develop a new visual monitoring device and a new visual monitoring system for a smelting reduction furnace.
The specific scheme is as follows:
in one aspect, the present embodiment provides a visual monitoring device 10 suitable for a smelting reduction furnace, as shown in fig. 1, including a device body, a sealing assembly 12, a monitoring assembly 13, a loading and unloading valve 14, an injection assembly 15, a cooling assembly 16, and a fixing member 17, wherein the device body is provided with an accommodating cavity 11; the sealing component 12 is arranged at the top of the accommodating cavity 11, and the sealing component 12 comprises a high-temperature-resistant sealing ring for sealing the accommodating cavity 11; the monitoring assembly 13 is arranged at the bottom of the inner side of the accommodating cavity 11, and the monitoring assembly 13 comprises a thermal imager for monitoring the condition in the melting reduction furnace; the loading and unloading valve 14 is sleeved on the upper part of the accommodating cavity 11 and used for installing or disassembling the monitoring assembly 13; the blowing assembly 15 is arranged below the loading and unloading valve 14, and the blowing assembly 15 comprises a blowing pipeline communicated with the accommodating cavity 11 and used for blowing gas into the accommodating cavity 11; the cooling assembly 16 is sleeved outside the accommodating cavity 11, and the cooling assembly 16 comprises a cooling liquid circulating pipeline for cooling the monitoring assembly 13; the fixing member 17 is disposed to be fitted over the outside of the cooling block 16 to fix the visual monitoring apparatus 10 to the smelting reduction furnace.
The visual monitoring device 10 suitable for the smelting reduction furnace of the embodiment can effectively observe and acquire the production state in the smelting reduction furnace in the production process by arranging the monitoring assembly 13 in the accommodating cavity 11; the monitoring assembly 13 is cooled by the cooling assembly 16, so that the monitoring assembly 13 can be ensured to stably run for a long time; further carry out jetting cooling protection to monitoring subassembly 13 on the one hand through setting up jetting subassembly 15, on the other hand carries out the jetting deashing to monitoring subassembly 13, prevents that the camera lens of monitoring subassembly 13 from becoming grey to influence the monitoring picture. In addition, the monitoring assembly 13 can be conveniently maintained and replaced by arranging the loading and unloading valve 14; accordingly, by providing the sealing assembly 12, the reaction gas in the smelting reduction furnace can be prevented from leaking out through the accommodating chamber 11, which causes a dangerous situation. The visual monitoring device 10 suitable for the smelting reduction furnace is suitable for high-temperature, high-dust and pressurized environments in the smelting reduction furnace through the integral design, and can effectively cool and protect the monitoring assembly 13, so that the monitoring assembly 13 is continuously and normally used, the condition in the furnace is monitored in real time, and the long-term stable operation of the process production of the smelting reduction furnace is guided.
In a preferred implementation, the thermal imager is a thermal infrared imager (FPA thermal imager). The thermal infrared imager is a core component of a visual monitoring device 10 suitable for a smelting reduction furnace, comprises an uncooled focal plane detector and a special lens, and converts object temperature distribution data of a monitored target into a color video image by detecting infrared radiation energy of the monitored target in the smelting reduction furnace and then through means of photoelectric conversion, electric signal processing and the like. The infrared thermal imager has wide use temperature range, the temperature resolution can reach 2 ℃, and the bearable maximum temperature can reach 2000 ℃. Therefore, the thermal infrared imager can adapt to the severe environment of 1800 ℃ in the melting reduction furnace. In addition, the thermal infrared imager also has the advantages of strong dust interference resistance and the like, and can obtain clearer images in the melting reduction furnace in the production process.
In a preferred implementation, cooling assembly 16 further includes a liquid inlet and a liquid outlet, the liquid inlet and/or the liquid outlet being connectable to a cooling liquid circulation system 40 of the smelting reduction furnace. Further, cooling water is adopted for cooling. The visual monitoring device 10 can be connected with a cooling liquid circulating system 40 arranged on the smelting reduction furnace through a liquid inlet and a liquid outlet, so that the cooling liquid in the cooling assembly 16 comes from the cooling water circulating system of the smelting reduction furnace, the supply of the cooling liquid is controlled through an electric valve 152, and the cooled cooling liquid is discharged into a drainage tank through an output pipeline of the cooling liquid circulating system 40. This simplifies the structure of the visual monitoring device 10, making it more suitable for use in smelting reduction furnaces.
In a preferred implementation, the blowing assembly 15 further comprises a gas surge tank 151, an electric valve 152 and a manual shut-off valve 153.
Wherein, the gas surge tank 151 can be connected with the injection pipeline to make the gas pressure in the injection pipeline higher than the flue gas pressure in the smelting reduction furnace. The blowing pipeline is directly communicated with the containing cavity 11, and a pressurizing or decompressing component is not arranged in the middle of the blowing pipeline, so that the gas pressure in the blowing pipeline is equal to the gas pressure in the containing cavity 11. The main components of the flue gas in the melting reduction furnace are coal gas, nitrogen, hydrogen, oxygen, smoke dust and the like. The gas pressure in the accommodating cavity 11 is higher than the gas pressure in the smelting reduction furnace, so that the gas in the smelting reduction furnace can be ensured not to leak; in addition, the monitoring assembly 13 can be protected by the gas in the accommodating cavity 11.
The electric valve 152 is disposed on the blowing pipeline, and the electric valve 152 can receive a control signal to blow the monitoring assembly 13. Preferably, the electric valve 152 is a ball valve, and the on/off of the electromagnetic valve causes the cylinder to drive the actuator to operate, thereby opening and closing the electric valve 152. The electric valve 152 can receive a control signal of an external device or be controlled by a PLC program control system, so that gas injection is performed on the monitoring component 13 periodically or aperiodically, and automatic ash removal of the monitoring component 13 is realized.
Preferably, the blowing pipeline is further provided with a manual cut-off valve 153, the manual cut-off valve 153 is generally a common manual ball valve, the manual cut-off valve 153 is kept in an open state during normal operation, and the manual cut-off valve 153 can be manually closed in emergency to ensure the set safe operation.
The injection module 15 may be connected to a gas circulation system 30 of the smelting reduction furnace, and gas is supplied to the injection line through the gas circulation system 30 of the smelting reduction furnace, and on/off of the gas is controlled by an electric valve 152 and/or a manual shut-off valve 153. Preferably, the injection assembly 15 is connected to an in-situ instrumentation gas distributor of the smelting reduction furnace, through which gas is supplied to the injection line, and the gas is controlled to be turned on and off by an electric valve 152 and/or a manual shut-off valve 153.
Because the environment that high dust, slag iron liquid drop splash in the smelting reduction furnace, monitoring subassembly 13 must produce the phenomenon of becoming grey after long-term operation, for preventing monitoring subassembly 13's camera lens from becoming grey, influence the monitoring picture, set up jetting subassembly 15 and carry out automatic deashing regularly, also play the cooling effect to monitoring subassembly 13 simultaneously.
In a preferred implementation, the gas blown by the blowing assembly 15 is nitrogen.
In a preferred implementation manner, the visual monitoring device 10 further includes a signal transmission device 18 and a signal processing device 19, the signal transmission device 18 is disposed on the upper portion of the device body for signal connection with an external device; the signal processing device 19 is disposed below the signal transmission device 18 for processing the signal detected by the monitoring component 13.
The visual monitoring device 10 further comprises a power supply, a signal transmission device 18 and a signal processing device 19. The 14-bit temperature data output by the thermal imager core in the monitoring assembly 13 can be transmitted to a main control room of the external device through the signal transmission device 18. The distance of the field control room greatly exceeds the transmission distance of the network cable, and therefore, optical fiber transmission is required. In addition, the power supply used by the monitoring unit 13, the blowing unit 15, and the like needs to be transmitted from the installation site to the visual monitoring apparatus 10.
The embodiment of the utility model provides a visual monitoring system of smelting reduction furnace on the other hand, as shown in fig. 2, the visual monitoring system of smelting reduction furnace includes smelting reduction furnace body 20 and as above-mentioned any one the visual monitoring device 10 that is applicable to smelting reduction furnace, visual monitoring device 10 is bayonet to be set up on smelting reduction furnace body 20 upper portion.
The visual monitoring device 10 is installed on the upper conical section of the smelting reduction furnace body 20, so that the visual monitoring device 10 can be far away from the molten pool at the bottom of the smelting reduction furnace. Therefore, the heat radiation can be effectively reduced, the liquid slag or iron drops are prevented from splashing to the visual monitoring device 10, and the visual monitoring device 10 and the monitoring component 13 thereon are protected conveniently.
In a preferred embodiment, a plurality of visual monitoring devices 10 are disposed on the upper portion of the smelting reduction furnace body 20, and the visual monitoring devices 10 are uniformly distributed around the vertical axis of the smelting reduction furnace.
Preferably, two visual monitoring devices 10 are arranged on the upper part of the smelting reduction furnace body 20, and the two visual monitoring devices 10 are symmetrically arranged. The two visual monitoring devices 10 are symmetrically arranged on the upper part of the smelting reduction furnace body 20, so that the limitation of the installation angle of the device and the visual angle (0-90 degrees) of a thermal imager can be effectively avoided, and the problem that the part of a cooling plate, a copper cooling wall and a lining of each device close to the side of the device cannot be monitored is solved.
In a preferred implementation, the visual monitoring system further comprises a gas circulation system 30 and a cooling liquid circulation system 40, wherein the gas circulation system 30 is connected with the blowing assembly 15; a cooling fluid circulation system 40 is connected to the cooling module 16.
In a preferred implementation manner, the visual monitoring system for the smelting reduction furnace further comprises a data transmission device 50, a data processing device 60, a data storage device 70 and an alarm device 80; the data transmission device 50 is connected with the signal transmission device 18; the data processing device 60 is connected with the data transmission device 50; the data storage device 70 is connected with the data processing device 60;
the alarm device 80 is connected to the data processing device 60 and the data storage device 70, respectively, for generating an over-temperature alarm. Temperature data processing, image display and storage software and a computer system. The terminal is a terminal of a monitoring system and is also an information source for data analysis, data archiving and big data analysis.
For the sake of understanding, the visual monitoring device 10 and the visual monitoring system suitable for the smelting reduction furnace are further described below:
in one aspect, the present embodiment provides a visual monitoring device 10 suitable for a smelting reduction furnace, in which a sealing assembly 12, a loading and unloading valve 14, a blowing assembly 15, a cooling assembly 16, a fixing member 17, and a monitoring assembly 13 disposed in an accommodating cavity 11 inside a device body are sequentially disposed from top to bottom on the device body.
Wherein the monitoring assembly 13 comprises a thermal infrared imager (FPA thermal imager). The thermal infrared imager is a core component of the visual monitoring device 10, comprises an uncooled focal plane detector and a special lens, and converts the temperature distribution data of an object to be monitored into a color video image by detecting the infrared radiation energy of the monitored object in the smelting reduction furnace and through means of photoelectric conversion, electric signal processing and the like. The infrared thermal imager has wide use temperature range, the temperature resolution can reach 2 ℃, the highest temperature can be calibrated to 2000 ℃, and the infrared thermal imager can adapt to the high-temperature environment of 1800 ℃ in the melting reduction furnace. In addition, the thermal infrared imager has strong dust interference resistance and can obtain clearer images.
The visual monitoring device 10 is provided with a blowing assembly 15 and a cooling assembly 16 for protecting the monitoring assembly 13. The blowing assembly 15 includes a blowing duct communicating with the accommodating chamber 11, and is capable of blowing gas into the accommodating chamber 11. In this embodiment, nitrogen is used as the gas to be blown. The pressure of nitrogen in the blowing component 15 is 0.25MPa higher than the pressure of flue gas in the smelting reduction furnace, and the nitrogen consumption is 40Nm3H is used as the reference value. The nitrogen gas is connected to a gas source distribution box of the monitoring system. The gas source distribution box distributes the nitrogen main pipeline into a plurality of nitrogen branches required on site.
The cooling assembly 16 is sleeved outside the accommodating cavity 11, and the cooling assembly 16 comprises a cooling liquid circulating pipeline for cooling the monitoring assembly 13.
In this embodiment, nitrogen in the blowing component 15 may be provided by a nitrogen surge tank, a nitrogen main pipe using DN25 is connected to a power distribution box, each delivery branch pipe for distributing nitrogen at an outlet of the power distribution box is connected to the interfaces of the blowing components 15 of the two sets of visual monitoring devices 10, an electric valve 152 is installed on each nitrogen delivery branch pipe, the electric valve 152 may receive a control signal of an external device, control the on/off of gas blowing in the blowing pipe, and realize automatic blowing and dust removal of the thermal imager lens at regular or irregular intervals. A manual cut-off valve 153 is also installed at the interface close to the blowing assembly 15 and is connected with the nitrogen gas delivery branch pipe through an armored metal hose.
The cooling water adopts industrial clean ring water, the water supply temperature is less than or equal to 35 ℃, the water supply pressure is 0.4MPa, and the water supply flow is 1.5m 3/h. The cooling water supply and return pipe is connected with the armored rubber pipe at the cooling water inlet and the cooling water outlet of the thermal imager. The power supply requirement is 220V +/-10 percent and 50 Hz. The cooling water is from a water supply ring pipe of a furnace top core high-pressure system, a circulating water supply pipeline is connected with a thermal imager equipment protective water jacket for cooling the equipment, the supply of the cooling water is controlled by an electric valve 152, and the circulating water after the cold area is discharged into a water discharge tank through a circulating water output pipeline.
The 14-bit temperature data output by the thermal imager core needs to be transmitted to a main control room and is connected into a distribution box through a special video cable and a temperature measuring cable, and because the distance between a site and the control room greatly exceeds the transmission distance of a common network cable, the thermal imager core needs to be transmitted by using optical fibers, is connected to an image consultation processing industrial computer and a monitor in the main control room, displays a video picture, records and stores a detection image, displays the temperature of thermal imager equipment on a temperature display and alarm control box, and automatically alarms when the temperature exceeds the set temperature of 1800 ℃. In addition, the power supply used by the thermal imager and the ash removal system needs to be sent to the thermal imager installation site from a main control room through a site power distribution box.
On the other hand, the embodiment provides a visual monitoring system for the smelting reduction furnace, which adopts a plug-in monitoring device structure, wherein a monitoring component 13 of the visual monitoring system detects infrared radiation energy of a target in the smelting reduction furnace by using an FPA thermal imager, converts a temperature distribution image of the target object into a color video image on a monitor by means of photoelectric conversion, electric signal processing and the like, and is connected with an image consultation processing industrial control computer (data processing device 60) in a main control room (data storage device 70) through a special network cable to record and store the detected image for historical inquiry, analysis and data archiving, and the monitoring result provides information for future big data analysis.
The 2 sets of the same visual monitoring devices 10 are arranged on the site at the cone section positions of the smelting reduction furnace body 20 and are symmetrically distributed, nitrogen is shared to automatically clean ash on the monitoring components 13 regularly, and high-pressure circulating water in the furnace top cooling liquid circulating system 40 is used for continuously and circularly cooling the 2 sets of the visual monitoring devices 10, so that the normal use of the monitoring system is ensured.
The main equipment of the visual monitoring system comprises a nitrogen pressure stabilizing tank, a power distribution and distribution box, thermal imaging monitoring equipment, an image consultation processing industrial control computer, a monitor, a temperature display and alarm control box, a nitrogen and circulating cooling water connecting pipeline and a power supply and control signal cable required by the system.
The utility model can be realized by adopting or using the prior art for reference in places which are not mentioned in the utility model.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various changes or substitutions within the technical scope of the present invention, which should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "square," and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The above disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described above. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Claims (10)
1. A visual monitoring device suitable for a smelting reduction furnace is characterized by comprising:
the device comprises a device body, wherein an accommodating cavity is formed in the device body;
the sealing assembly is arranged at the top of the accommodating cavity and comprises a high-temperature-resistant sealing ring for sealing the accommodating cavity;
the monitoring assembly is arranged at the bottom of the inner side of the accommodating cavity and comprises a thermal imager used for monitoring the condition in the melting reduction furnace;
the loading and unloading valve is sleeved on the upper part of the accommodating cavity and used for installing or disassembling the monitoring assembly;
the blowing assembly is arranged below the loading and unloading valve and comprises a blowing pipeline communicated with the accommodating cavity and used for blowing gas into the accommodating cavity;
the cooling assembly is sleeved outside the accommodating cavity and comprises a cooling liquid circulating pipeline for cooling the monitoring assembly;
the fixing piece is sleeved on the outer side of the cooling assembly and used for fixing the visual monitoring device to the smelting reduction furnace.
2. The visual monitoring device suitable for the smelting reduction furnace according to claim 1, characterized in that:
the thermal imager is an infrared thermal imager which comprises an uncooled focal plane detector and a special lens.
3. The visual monitoring device suitable for the smelting reduction furnace according to claim 1, characterized in that:
the cooling assembly further comprises a liquid inlet and a liquid outlet, and the liquid inlet and/or the liquid outlet can be connected with a cooling liquid circulating system of the smelting reduction furnace.
4. The visual monitoring device for a smelting reduction furnace as set forth in claim 1, wherein the injection assembly further comprises:
the gas pressure stabilizing tank is connected with the blowing pipeline and is used for enabling the gas pressure in the accommodating cavity to be higher than the smoke pressure in the melting reduction furnace;
the electric valve is arranged on the blowing pipeline and can receive control signals to blow the monitoring assembly.
5. The visual monitoring device suitable for the smelting reduction furnace according to claim 1, characterized in that:
the gas injected by the injection component is nitrogen.
6. The visual monitoring device for the smelting reduction furnace according to claim 1, further comprising:
the signal transmission device is arranged on the upper part of the device body and is used for signal connection with external equipment;
and the signal processing device is arranged below the signal transmission device and is used for processing the signal detected by the monitoring component.
7. A visual monitoring system for a smelting reduction furnace, which is characterized by comprising a smelting reduction furnace body and the visual monitoring device suitable for the smelting reduction furnace as claimed in any one of claims 1 to 6, wherein the visual monitoring device is arranged on the upper part of the smelting reduction furnace body in an inserting manner.
8. The visual monitoring system for the smelting reduction furnace according to claim 7, characterized in that:
the upper part of the smelting reduction furnace body is provided with a plurality of visual monitoring devices which are uniformly distributed and installed by taking a vertical shaft of the smelting reduction furnace as a center.
9. The visual monitoring system of a smelting reduction furnace according to claim 7, further comprising:
the gas circulation system is connected with the blowing assembly;
a coolant circulation system connected with the cooling assembly.
10. The visual monitoring system of a smelting reduction furnace according to claim 7, further comprising:
the data transmission device is connected with the signal transmission device;
the data processing device is connected with the data transmission device;
the data storage device is connected with the data processing device;
and the alarm device is respectively connected with the data processing device and the data storage device and is used for sending out an overtemperature alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022809331.3U CN213924891U (en) | 2020-11-27 | 2020-11-27 | Visual monitoring device and visual monitoring system suitable for smelting reduction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022809331.3U CN213924891U (en) | 2020-11-27 | 2020-11-27 | Visual monitoring device and visual monitoring system suitable for smelting reduction furnace |
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| Publication Number | Publication Date |
|---|---|
| CN213924891U true CN213924891U (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022809331.3U Active CN213924891U (en) | 2020-11-27 | 2020-11-27 | Visual monitoring device and visual monitoring system suitable for smelting reduction furnace |
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| Country | Link |
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| CN (1) | CN213924891U (en) |
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