A device for detecting the position of gas channeling in a hearth ramming

Abstract

The utility model relates to the field of furnace body side leakage, especially a furnace hearth ramming material coal gas channeling position detection device, including the cooling wall, the inner wall of cooling wall piles up carbon brick that distributes again equidistance, and the gap between carbon brick is filled with ramming material between cooling wall and carbon brick, the one side outer wall of cooling wall is equipped with the sensor export, and the ramming material is equipped with the optical fiber temperature measurement structure near carbon brick, and the centre of cooling wall and carbon brick is equipped with heating structure, the optical fiber temperature measurement structure includes the high temperature distribution type optical fiber sensor, optical fiber coupler and optical fiber temperature measurement host computer that are equipped in the ramming material, and the heating structure includes the heat preservation box, the connecting pipe that is connected in the centre of heat preservation box one end, the utility model discloses the electric heater to the heat preservation box inside carries out heating, and the hot air is sprayed from the air outlet hole to carbon brick, and the high temperature distribution type optical fiber is connected with optical fiber temperature measurement host computer, utilizes the optical fiber temperature measurement, and the position of the ramming material that is not tight joint at the mark, is convenient for finding leakage.

Description

Technical Field

[0001] This utility model relates to the field of furnace side leakage technology, and in particular to a device for detecting the location of gas leakage during furnace hearth tamping. Background Technology

[0002] During blast furnace construction, the gaps between the hearth carbon bricks and the cooling walls are filled with rammed earth and compacted with a pneumatic hammer. However, since the rammed earth is a loose material, it cannot achieve the same density as the carbon bricks no matter how much it is pounded.

[0003] After the blast furnace is put into operation, the rammed charge gradually solidifies, forming tiny cracks and gaps. When high-temperature gas leaks into the furnace, it creates thermal resistance, disrupting the hearth heat transfer system. This leads to an increase in the temperature of the carbon bricks on the hearth sidewalls, accelerating the erosion of the carbon bricks by molten iron and shortening the lifespan of the blast furnace hearth. Therefore, it is necessary to detect gas leakage within the hearth rammed charge, pinpoint its exact location, and implement appropriate mitigation measures. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems and shortcomings by proposing a device for detecting the location of gas leakage in the furnace hearth during tamping: a blower draws in external gas through a filter and delivers it into the insulation box; an electric heater heats the inside of the insulation box; hot gas is sprayed onto the carbon bricks through the air outlet; a high-temperature distributed optical fiber is connected to an optical fiber temperature measuring host; and the optical fiber temperature is used to mark the locations where the tamping material is not completely sealed, making it easy to find leaks.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for detecting the location of gas leakage in a furnace hearth tamping material includes a cooling wall. The inner wall of the cooling wall is lined with carbon bricks distributed at equal intervals, and the gaps between the carbon bricks and the outer wall between the cooling wall and the carbon bricks are filled with tamping material. A sensor outlet is provided on one side of the outer wall of the cooling wall, and an optical fiber temperature measurement structure is provided near the carbon bricks in the tamping material. A heating structure is provided at the center of the cooling wall and the carbon bricks. The optical fiber temperature measurement structure includes a high-temperature distributed optical fiber sensor, an optical fiber coupler, and an optical fiber temperature measurement host installed in the tamping material. The heating structure includes an insulation box, a connecting pipe connected to the center of one end of the insulation box, and a central plate connected to the other end of the connecting pipe.

[0007] The fan draws in outside air through a filter and delivers it into the insulation box. The electric heater heats the inside of the insulation box, and the hot air is sprayed out onto the carbon bricks through the air outlet. The high-temperature distributed optical fiber is connected to the optical fiber temperature measuring host. The optical fiber temperature measurement marks the locations where the material is not tightly sealed, making it easy to find leaks.

[0008] Preferably, the central tray is hollow inside, and the outer side wall of the central tray is provided with air outlet holes that are evenly distributed.

[0009] The fan and heater are started, and the heater inside the insulation box heats the inside of the insulation box. The hot air is sprayed onto the carbon bricks through the air outlet on the central plate, which facilitates the testing of leaks.

[0010] Preferably, an electric heater is installed on the inner wall of the insulation box, and the two ends of the connecting pipe are respectively connected to the insulation box and the central tray.

[0011] Preferably, the outer walls of both sides of the heat preservation box and the outer wall of one side of the central tray are equipped with support legs, and one end of the outer wall of the support leg is in contact with the outer wall of the carbon brick.

[0012] Preferably, a fan is installed on the top outer wall of the insulation box, and the output end of the fan is connected to a conveying pipe, the other end of which is connected to the insulation box.

[0013] Preferably, a filter is connected to the input end of the fan.

[0014] Preferably, the electric heater, fan, and fiber optic temperature measuring host are connected to a switch via wires, and the switch is connected to a power source via wires.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. When the fan and heater are started, the heater inside the insulation box heats the inside of the insulation box, and the hot air is sprayed onto the carbon bricks through the air outlet on the central plate, which facilitates the testing of leaks.

[0017] 2. The fan draws in outside air through the filter and delivers it into the insulation box. The electric heater heats the inside of the insulation box, and the hot air is sprayed out onto the carbon bricks through the air outlet. The high-temperature distributed optical fiber is connected to the optical fiber temperature measuring host. The optical fiber temperature measurement marks the locations where the material is not tightly sealed, making it easy to find leaks. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of a gas leakage detection device in a furnace hearth tamping process proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the overall structure of the heating structure of the gas leakage detection device in the furnace hearth tamping process proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the insulation box of the gas leakage detection device in the furnace hearth tamping process proposed in this utility model.

[0021] Figure 4 This is a cross-sectional structural schematic diagram of a gas leakage detection device in the furnace hearth tamping process proposed in this utility model.

[0022] In the diagram: 1 Cooling wall, 2 Carbon brick, 3 Ramming material, 4 Heating structure, 5 Fiber optic temperature measurement structure, 6 Insulation box, 7 Centralized tray, 8 Support leg, 9 Connecting pipe, 10 Air outlet, 11 Fan, 12 Filter, 13 Conveying pipe, 14 Electric heater. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1:

[0025] Reference Figure 1-4 A device for detecting the location of gas leakage in the rammed material of a furnace hearth includes a cooling wall 1. The inner wall of the cooling wall 1 is stacked with carbon bricks 2 distributed at equal intervals. The gaps between the carbon bricks 2 and the outer wall between the cooling wall 1 and the carbon bricks 2 are filled with rammed material 3. A sensor outlet is provided on one side of the outer wall of the cooling wall 1. An optical fiber temperature measurement structure 5 is provided near the carbon bricks 2 in the rammed material 3. A heating structure 4 is provided at the center of the cooling wall 1 and the carbon bricks 2. A high-temperature distributed optical fiber is connected to the optical fiber temperature measurement host through an optical fiber coupler. The heat flow is detected by the optical fiber temperature measurement. The heat flow is detected by contacting the distributed optical fiber through the gaps in the rammed material 3. The location where the rammed material 3 is not completely sealed is marked.

[0026] The heating structure 4 includes a heat preservation box 6, a connecting pipe 9 connected to the center of one end of the heat preservation box 6, and a central plate 7 connected to the other end of the connecting pipe 9.

[0027] The interior of the central plate 7 is hollow, and the outer side wall of the central plate 7 is provided with air outlet holes 10 distributed at equal intervals. After the carbon brick 2 and the ramming material 3 are assembled, the test is carried out. The fan 11 and the electric heater 14 are started. The fan 11 draws the outside air through the filter 12 and delivers it into the heat preservation box 6. The electric heater 14 inside the heat preservation box 6 heats the inside of the heat preservation box 6. Then the hot air enters the central plate 7. The hot air is sprayed out onto the carbon brick 2 through the air outlet holes 10 on the central plate 7 to facilitate heat leakage.

[0028] An electric heater 14 is installed on the inner wall of the heat preservation box 6, and the two ends of the connecting pipe 9 are connected to the heat preservation box 6 and the central plate 7 respectively.

[0029] Support legs 8 are installed on both outer walls of the heat preservation box 6 and one outer wall of the central tray 7, and one end of the outer wall of the support leg 8 is in contact with the outer wall of the carbon brick 2.

[0030] A fan 11 is installed on the top outer wall of the heat preservation box 6, and the output end of the fan 11 is connected to a conveying pipe 13, the other end of the conveying pipe 13 being connected to the heat preservation box 6.

[0031] The input end of the blower 11 is connected to a filter 12, which facilitates the filtration and adsorption of the incoming gas.

[0032] The electric heater 14, the fan 11, and the fiber optic temperature measuring host are connected to a switch via wires, and the switch is connected to a power source via wires.

[0033] Example 2:

[0034] Reference Figure 1 The fiber optic temperature measurement structure includes a high-temperature distributed fiber optic sensor, a fiber optic coupler, and a fiber optic temperature measurement host installed in the tamping material 3. The core is to safely and with low loss transmit the high-temperature radiation signal inside the blast furnace to the external detection system through fiber optics, and then calculate the temperature by combining the blackbody radiation law. Compared with traditional fiber optic temperature measurement, the introduction of fiber optics solves the problems of sensor temperature resistance and signal transmission anti-interference in high-temperature environments.

[0035] Working principle: During use, the high-temperature distributed optical fiber is placed in the tamping material 3 during the blast furnace construction process. After the carbon brick 2 and the tamping material 3 are assembled, a test is conducted. The blower 11 and the electric heater 14 are started. The blower 11 draws in the outside gas through the filter 12 and delivers it to the inside of the insulation box 6. The electric heater 14 inside the insulation box 6 heats the inside of the insulation box 6. Then the hot gas enters the concentrator 7. The hot gas is sprayed onto the carbon brick 2 through the air outlet 10 on the concentrator 7. The high-temperature distributed optical fiber is connected to the optical fiber temperature measurement host through the optical fiber coupler. Using optical fiber temperature measurement, the heat flow comes into contact with the distributed optical fiber through the gaps in the tamping material 3. The location where the tamping material 3 is not completely sealed is marked, which is convenient for finding the leak point. Fiber optic temperature measurement principle: A non-contact (or indirect contact) temperature measurement technology that combines the transmission characteristics of optical fiber and the principle of radiation temperature measurement. It is particularly suitable for the extreme environment of blast furnace with high temperature, dust, strong electromagnetic interference and narrow space.

[0036] Its core is to safely and with low loss transmit the high-temperature radiation signal inside the blast furnace to the external detection system through optical fiber, and then calculate the temperature by combining the blackbody radiation law. Compared with traditional optical fiber temperature measurement, the introduction of optical fiber solves the problems of sensor temperature resistance and signal transmission anti-interference in high-temperature environments.

[0037] The exemplary embodiments of the present invention have been described in detail herein with reference to examples. However, those skilled in the art will understand that various modifications and alterations can be made to the specific embodiments described above without departing from the spirit of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention, which is determined by the appended claims. The foregoing description of specific exemplary embodiments of the present invention is not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical applications, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A device for detecting the location of gas leakage in a furnace hearth during tamping, comprising a cooling wall (1), characterized in that, The inner wall of the cooling wall (1) is stacked with carbon bricks (2) distributed at equal intervals, and the gaps between the carbon bricks (2) and the outer wall between the cooling wall (1) and the carbon bricks (2) are filled with ramming material (3). A sensor outlet is provided on one side of the outer wall of the cooling wall (1), and an optical fiber temperature measurement structure (5) is provided near the carbon bricks (2) of the ramming material (3). A heating structure (4) is provided at the center of the cooling wall (1) and the carbon bricks (2). The fiber optic temperature measurement structure includes a high-temperature distributed fiber optic sensor, a fiber optic coupler, and a fiber optic temperature measurement host installed in the tamping material (3); The heating structure (4) includes a heat preservation box (6), a connecting pipe (9) connected to the center of one end of the heat preservation box (6), and a central plate (7) connected to the other end of the connecting pipe (9).

2. The device for detecting the location of gas leakage in the hearth during tamping according to claim 1, characterized in that, The central plate (7) is hollow inside, and the outer side wall of the central plate (7) is provided with air outlet holes (10) distributed at equal intervals.

3. The device for detecting the location of gas leakage in the hearth during tamping according to claim 1, characterized in that, The inner wall of the heat preservation box (6) is equipped with an electric heater (14), and the two ends of the connecting pipe (9) are connected to the heat preservation box (6) and the central plate (7) respectively.

4. The device for detecting the location of gas leakage in the hearth during tamping according to claim 1, characterized in that, Support legs (8) are installed on both sides of the outer wall of the heat preservation box (6) and one side of the outer wall of the central plate (7), and one end of the outer wall of the support leg (8) is in contact with the outer wall of the carbon brick (2).

5. The device for detecting the location of gas leakage in the hearth during tamping according to claim 1, characterized in that, A fan (11) is installed on the top outer wall of the insulation box (6), and the fan (11) has a delivery pipe (13) connected to its output end, and the other end of the delivery pipe (13) is connected to the insulation box (6).

6. The device for detecting the location of gas leakage in the hearth during tamping according to claim 5, characterized in that, The input end of the fan (11) is connected to a filter (12).

7. The device for detecting the location of gas leakage in the hearth during tamping according to claim 3, characterized in that, The electric heater (14), fan (11) and fiber optic temperature measuring host are connected to a switch via wires, and the switch is connected to a power source via wires.

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