Automatic advancing and retreating ash removal device with hanging sweeper for blast furnace thermal imager

Abstract

The utility model provides an automatic advancing and retreating ash cleaning device with a hanging sweeper for a blast furnace thermal imager, which relates to the technical field of blast furnace thermal imager application and comprises a thermal imager detection device, a water control electromagnetic valve and a water-gas medium input pipeline, the front end of the thermal imager detection device is communicated with a tee joint, the tee joint is respectively communicated with a water pipeline and an air pipe, the rear end of the thermal imager detection device is communicated with the cooling cavity, and water and air in the water pipeline and the air pipe are introduced into the cooling cavity through the tee joint; compared with the prior art, the automatic cleaning device has the advantages that automatic cleaning can be achieved by adopting two media of gas and water in the cleaning process, the cleaning frequency of accumulated dust at the front end is reduced, the better cleaning effect is achieved, the equipment investment cost is reduced, and the reliability is higher; the thermal imager has the advantages of being convenient to install, economical, practical and capable of being automatically adjusted and cleaned, and solves the problem that dust on the surface of an existing thermal imager cannot be automatically cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of application of blast furnace thermal imagers, in particular to an automatic advancing and retreating dust cleaning device with hanging sweeper for blast furnace thermal imagers. Background Art

[0002] In the iron-making blast furnace system, iron-making is the process of extracting metallic iron from iron-containing minerals (mainly iron oxides). There are mainly blast furnace method, direct reduction method, molten reduction method, and plasma method. The blast furnace used for iron-making needs to use a thermal imager for online monitoring when in use. Many important equipment in blast furnace production works under high temperature and high pressure conditions. Strict online monitoring of the production process helps to eliminate flammable and explosive hazards in a timely manner, while enhancing the control of various process steps in the production process, such as spreading and stirring, and quickly and accurately obtaining surface temperature distribution maps and data of equipment and materials. At the same time, infrared thermal imagers can also quickly detect various abnormal conditions such as corrosion, cracking, thinning, blockage, leakage, etc. in the reactor, which is very effective in preventing accidents and is an ideal data entry and diagnostic tool.

[0003] During blast furnace production, iron ore, coke and flux for slag making are loaded from the top of the furnace, and preheated air is blown in from the tuyere located around the bottom of the furnace. Under high temperature, some blast furnaces also spray auxiliary fuels such as pulverized coal, heavy oil and natural gas to burn with oxygen in the blown air to generate carbon monoxide and hydrogen. During the rising process in the furnace, oxygen in the iron ore is removed, thereby reducing it to obtain iron. The smelted molten iron is discharged from the iron mouth, and the unreduced impurities in the iron ore combine with flux such as limestone to form slag, which is discharged from the slag mouth. The generated coal gas is discharged from the top of the furnace, causing a lot of dust in the working area of ​​the top thermal imager, resulting in dust accumulation on the surface of the existing thermal imager and the inability to automatically clean it. For this reason, we propose an automatic cleaning method and device for the infrared temperature measurement thermal imager detection system for iron-making blast furnaces. Utility Model Content

[0004] In view of this, the utility model provides a blast furnace thermal imager automatic advance and retreat belt hanging sweeping dust cleaning device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0005] The technical solution of the utility model is achieved as follows: a blast furnace thermal imager automatic advance and retreat belt sweeping dust cleaning device, comprising a thermal imager detection device, a water control solenoid valve and a water and gas medium input pipeline; the front end of the thermal imager detection device is connected to a tee, and the tee is respectively connected to a water pipeline and an air pipe; the rear end of the thermal imager detection device is connected to a cooling cavity, and water and air in the water pipeline and the air pipe are alternately introduced into the cooling cavity through the tee; the blast furnace body is arranged at the bottom of the thermal imager detection device;

[0006] A water control solenoid valve is provided between the water pipeline and the water-gas medium input pipeline, and the water control solenoid valve controls the start and stop of the water body in the water pipeline;

[0007] An air control solenoid valve is provided between the air pipe and the water-gas medium input pipeline, and the air control solenoid valve controls the start and stop of the gas medium in the input pipeline;

[0008] The water control solenoid valve and the air control solenoid valve are used to control the alternation of water and air in the water pipeline and the water-air medium input pipeline to improve the cooling effect.

[0009] Further preferably, the water pressure in the water pipeline is 0.4-0.6 MPa, and the gas pressure in the trachea is 0.7-0.8 MPa.

[0010] Further preferably, the front end of the air pipe is connected to a cooling air tank.

[0011] Further preferably, the front end of the water pipeline is connected to cooling water.

[0012] Further preferably, the front ends of the water control solenoid valve and the air control solenoid valve are both electrically connected to a control box and controlled by PLC software.

[0013] The embodiment of the present invention adopts the above technical solution, which has the following advantages:

[0014] 1. The utility model can realize automatic cleaning through the alternating action of air and water media, reducing the cleaning frequency of dust accumulation at the front end, not only achieving a better cleaning effect, but also reducing the equipment investment cost and having higher reliability.

[0015] Second, the utility model has the advantages of being easy to construct and install, economical and practical, and capable of automatic adjustment and cleaning, thereby solving the problem that dust accumulates on the surface of existing thermal imagers and cannot be automatically cleaned.

[0016] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1This is a schematic diagram of the control system of the utility model;

[0019] Figure 2 It is a schematic diagram of the three-way joint and the air pipe of the utility model.

[0020] Figure numerals: 1. Thermal imager detection device; 2. Water-gas medium input pipeline; 3. Water pipeline; 4. Water control solenoid valve; 5. Tee; 6. Air pipe; 7. Air control solenoid valve; 8. Blast furnace body; 9. Cooling cavity. DETAILED DESCRIPTION

[0021] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0022] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 -2, the embodiment of the present invention provides a blast furnace thermal imager automatic advance and retreat belt sweeping dust cleaning device: including a thermal imager detection device 1, a water control solenoid valve 4 and a water-gas medium input pipeline 2; the front end of the thermal imager detection device 1 is connected with a tee 5, and the tee 5 is respectively connected with a water pipeline 3 and an air pipe 6, and the rear end of the thermal imager detection device 1 is connected with a cooling cavity 9, and the water and air in the water pipeline 3 and the air pipe 6 are introduced into the cooling cavity 9 through the tee 5, and a blast furnace body 8 is arranged at the bottom of the thermal imager detection device 1; a water control solenoid valve 4 is arranged between the water pipeline 3 and the water-gas medium input pipeline 2, and the water control solenoid valve 4 controls the start and stop of the water body in the water pipeline 3; an air control solenoid valve 7 is arranged between the air pipe 6 and the water-gas medium input pipeline 2, and the air control solenoid valve 7 controls the start and stop of the gas in the water-gas medium input pipeline 2; the alternating cooling effect of the water and gas in the water pipeline 3 and the water-gas medium input pipeline 2 is controlled by the water control solenoid valve 4 and the air control solenoid valve 7.

[0024] The water pressure in water pipe 3 is between 0.4 and 0.6 MPa, and the gas pressure in air pipe 6 is between 0.7 and 0.8 MPa. The front end of air pipe 6 is connected to a cooling gas tank. Cooling water is also connected to the front end of water pipe 3. The front ends of the water control solenoid valve 4 and the air control solenoid valve 7 are both electrically connected to a control box and controlled using PLC software.

[0025] When the utility model is working: the front end cools and cleans the water and gas media alternately through the water pipe 3 and the air pipe 6, and is controlled by PLC. When the gas cooling mode is adopted, the water control solenoid valve 4 is closed, the air control solenoid valve 7 is opened, and the gas in the air pipe 6 enters the front end thermal imager detection device 1 and the cooling cavity 9. The thermal imager detection device 1 receives the gas cooling signal, and the temperature is normal, and the gas enters the blast furnace body 8. At the same time, the front end of the thermal imager detection device 1 is gas-cooled and cleaned. Due to the influence of the air flow speed, there will be a small amount of dust accumulation in the local part of the front end, which needs to be cleaned regularly with a liquid medium. Since the kinematic viscosity coefficient of air is more than 10 times that of water, it is adopted. Liquid medium cleaning can more effectively clean the accumulated dust adsorbed by the thermal imager detection device 1 into the blast furnace body 8, thereby cleaning the accumulated dust into the blast furnace body 8 through the adsorption of dust on the surface of the liquid medium; when the medium water is cleaning, the gas system gives a closing signal to the gas control solenoid valve 7, and when the gas control solenoid valve 7 receives the closing signal, the control system gives an automatic opening signal to the water control solenoid valve 4, the water control solenoid valve 4 opens, and the water in the water pipe 3 cleans the front end of the thermal imager detection device 1. The cleaning time system can be set. When the cleaning time is up, the water control solenoid valve 4 automatically closes and the gas control solenoid valve 7 opens; this solves the problem of dust accumulation on the surface of the existing thermal imager and the inability to be automatically cleaned.

[0026] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A blast furnace thermal imager automatic advance and retreat belt hanging sweeping dust cleaning device, characterized by: The invention comprises a thermal imager detection device (1), a water control solenoid valve (4) and a water-gas medium input pipeline (2); the front end of the thermal imager detection device (1) is connected to a tee (5), the tee (5) is respectively connected to a water pipeline (3) and an air pipe (6); the rear end of the thermal imager detection device (1) is connected to a cooling cavity (9), and water and air in the water pipeline (3) and the air pipe (6) are introduced into the cooling cavity (9) through the tee (5); a blast furnace body (8) is provided at the bottom of the thermal imager detection device (1); A water control solenoid valve (4) is provided between the water pipeline (3) and the water-gas medium input pipeline (2), and the water control solenoid valve (4) controls the start and stop of the water body in the water pipeline (3); An air control solenoid valve (7) is provided between the air pipe (6) and the water-gas medium input pipeline (2), and the air control solenoid valve (7) controls the start and stop of the gas in the water-gas medium input pipeline (2); The water control solenoid valve (4) and the air control solenoid valve (7) are used to control the alternation of water and gas in the water pipeline (3) and the water-gas medium input pipeline (2) to improve the cooling and dust removal effect.

2. The automatic advance and retreat dust cleaning device with hanging sweeper for blast furnace thermal imager according to claim 1 is characterized in that: The water pressure in the water pipeline (3) is between 0.4 and 0.6 MPa, and the gas pressure in the gas pipe (6) is between 0.7 and 0.8 MPa.

3. The automatic advance and retreat dust cleaning device with hanging sweeper for blast furnace thermal imager according to claim 1 is characterized in that: The front end of the air pipe (6) is connected to a cooling air tank.

4. The automatic advance and retreat dust cleaning device with hanging sweeper for blast furnace thermal imager according to claim 1 is characterized in that: The front end of the water pipeline (3) is connected to cooling water.

5. The automatic advance and retreat dust cleaning device with hanging sweeper for blast furnace thermal imager according to claim 1 is characterized in that: The front ends of the water control solenoid valve (4) and the air control solenoid valve (7) are both electrically connected to a control box and controlled by PLC software.

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