Main iron runner temperature monitoring device

Abstract

The utility model discloses a main iron runner temperature monitoring device, which comprises a temperature detector and a pre-embedded thermal insulation sleeve, the pre-embedded thermal insulation sleeve is pre-embedded in a main iron runner lining layer, the bottom of the pre-embedded thermal insulation sleeve and a slag-iron boundary line of a main iron runner are positioned on the same horizontal line, the orifice of the pre-embedded thermal insulation sleeve penetrates out of the main iron runner lining layer, and the temperature detector is arranged on the pre-embedded thermal insulation sleeve. A temperature measuring probe of the temperature measuring device is inserted into the pre-buried heat preservation sleeve from a pipe opening of the pre-buried heat preservation sleeve and enters the main iron runner lining layer; the temperature measuring device is connected with a pressing device, and the pressing device tightly presses the temperature measuring device. The temperature monitoring device is inserted into the lining layer of the main iron runner downwards from the upper portion of the main iron runner, on the premise that the capital construction of the main iron runner is not changed, higher safety performance is achieved, the accuracy of temperature measurement is guaranteed, the temperature monitoring device is detached and installed from the upper portion during replacement, an installation space does not need to be reserved outside a steel shell of the main iron runner, replacement is more convenient and faster, and the cost is reduced. The practical value is realized.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace ironmaking technology. Specifically, it is a main trough temperature monitoring device. Background Technology

[0002] The main trough is an essential channel for transporting high-temperature molten iron and slag in the blast furnace ironmaking process. It typically consists of two parts: a steel shell and a refractory lining. During operation, the working layer thickness of the refractory lining in the main trough decreases continuously with increasing iron flow due to the scouring of molten iron and the erosion of slag. Eventually, insufficient residual thickness may occur, compromising safe production. To ensure safe operation, the refractory lining needs to be disassembled and recast. Therefore, accurately determining whether the thickness of the refractory lining in the main trough meets the conditions for safe production is crucial for the normal operation of the blast furnace. Currently, there are two methods for monitoring the thickness of the refractory lining in the main trough: one is manual inspection using a metal pipe, and the other is estimating the lining thickness by monitoring the temperature using thermocouples embedded in the steel shell or lining of the main trough.

[0003] Iron storage troughs are widely used in modern blast furnaces. Therefore, when manually inspecting the residual thickness of the main iron trough, the most common situation is that the trough contains high-temperature molten iron and slag, creating a very harsh environment. Workers cannot visually inspect the residual thickness of the refractory lining and can only inspect it by inserting a metal pipe under the slag. Due to the harsh environment, it is difficult to conduct a detailed and comprehensive inspection. If the thinnest part is not detected, the main iron trough may leak, causing a safety accident.

[0004] The mainstream method used in modern blast furnaces is to monitor the lining temperature of the main blast furnace by embedding thermocouples in the permanent layer of the main blast furnace or on the steel shell, and to estimate the residual thickness of the lining by measuring temperature changes. However, due to the expansion of the main blast furnace lining during operation and the vibration during the dismantling of old refractory materials, thermocouples are easily damaged. Once damaged, the installation method makes replacement difficult, rendering them ineffective for monitoring. Therefore, the method of embedding thermocouples cannot reliably monitor the temperature of the main blast furnace lining continuously. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to provide a main iron trough temperature monitoring device that can accurately monitor the temperature of the main iron trough lining, reduce the thermocouple damage rate, and conveniently replace damaged thermocouples, while minimizing the modification of the infrastructure on the outer side of the main iron trough steel shell.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a main iron trough temperature monitoring device, including a thermometer and a pre-embedded insulation sleeve. The pre-embedded insulation sleeve is embedded in the lining of the main iron trough. The bottom of the pre-embedded insulation sleeve is at the same horizontal level as the slag-iron boundary line of the main iron trough. The opening of the pre-embedded insulation sleeve extends out of the lining of the main iron trough. The temperature probe of the thermometer is inserted into the pre-embedded insulation sleeve from the opening and enters the lining of the main iron trough. A clamping device is connected to the thermometer. The clamping device clamps the thermometer so that the temperature probe at the end of the thermometer passes through the pre-embedded insulation sleeve and comes into close contact with the lining of the main iron trough.

[0007] The above-mentioned main iron trough temperature monitoring device has a pressure plate coaxially fixedly connected to the temperature sensor via a connecting pipe; the pressure device is fixedly installed on the outer wall of the main iron trough lining, and the pressure device presses the pressure plate.

[0008] In the above-mentioned main iron trough temperature monitoring device, an insulating sleeve is coaxially fixedly connected to the clamping plate, the temperature probe of the temperature sensor is fixedly installed on the end of the insulating sleeve away from the clamping plate, and a connecting rod is installed on the temperature sensor. The connecting rod passes through the connecting tube and the insulating sleeve in sequence and is connected to the temperature probe.

[0009] In the above-mentioned main iron trough temperature monitoring device, a second insulation layer is provided on the inner wall of the pre-embedded insulation sleeve. The second insulation layer is a flexible insulation layer, and the insulating sleeve passes through the second insulation layer and is tightly fitted to the second insulation layer.

[0010] The aforementioned main iron trough temperature monitoring device includes a clamping device comprising a support cylinder, a clamping flange, bolts, and a compression spring. A mounting flange is fixedly connected to one end of the support cylinder, and the mounting flange is connected to the outer wall of the main iron trough lining. The outer circumferential surface of the clamping flange is clearance-fitted with the inner wall of the support cylinder. The clamping flange is slidably fitted within the support cylinder. A connecting pipe passes through the clamping flange and is slidably fitted with it. A clamping plate is located within the support cylinder. The compression spring is sleeved on the connecting pipe, with one end abutting against the clamping plate and the other end abutting against the clamping flange. A through hole is provided on the clamping flange, and a threaded hole corresponding to the through hole is provided on the mounting flange. The bolt passes through the through hole on the clamping flange and is threaded into the threaded hole on the mounting flange.

[0011] In the above-mentioned main iron trough temperature monitoring device, a first insulation layer is attached to the inner wall of the support cylinder, and the first insulation layer is a flexible insulation layer.

[0012] The above-mentioned main iron trough temperature monitoring device has a base installed on the outer wall of the main iron trough lining, a mounting flange connected to the base, and a clamping device fixedly installed on the mounting flange.

[0013] In the above-mentioned main iron trough temperature monitoring device, the side wall of the base connected to the mounting flange and the side wall of the base connected to the main iron trough lining are parallel to each other.

[0014] In the above-mentioned main iron trough temperature monitoring device, the included angle between the side wall of the base connected to the mounting flange and the side wall of the base connected to the main iron trough lining is greater than zero degrees.

[0015] In the above-mentioned main iron trough temperature monitoring device, the pre-embedded insulation sleeve is a stainless steel pipe.

[0016] The technical solution of this utility model has achieved the following beneficial technical effects:

[0017] 1. The temperature monitoring device of this utility model is inserted into the lining of the main iron trough from above. Without changing the main iron trough infrastructure, it has higher safety performance and ensures the accuracy of temperature measurement. When replacing, it can be disassembled and installed from above, without reserving installation space outside the steel shell of the main iron trough, making replacement more convenient and quick, and has practical value.

[0018] 2. The thermometer is inserted into the pre-embedded insulation sleeve, making installation and disassembly more convenient and quick. When the thermocouple is damaged, it can be replaced quickly and easily. By setting a clamping device, the temperature probe can be in close contact with the temperature measuring point, ensuring the reliability of the temperature measurement results. Attached Figure Description

[0019] Figure 1 A front view structural schematic diagram of the main iron trough temperature monitoring device of this utility model;

[0020] Figure 2 A cross-sectional structural diagram of the main iron trough temperature monitoring device of this utility model;

[0021] Figure 3 This utility model Figure 2 A magnified structural diagram at point A;

[0022] Figure 4 A schematic diagram of the temperature measuring device in the main iron trough temperature monitoring device of this utility model;

[0023] Figure 5 A cross-sectional structural diagram of the clamping device of this utility model;

[0024] Figure 6 A schematic diagram of the temperature monitoring device for the main iron trough of this utility model being installed at an angle inside the lining of the main iron trough;

[0025] Figure 7 This is a schematic diagram of the temperature monitoring device for the main iron trough of this utility model, which is installed vertically inside the lining of the main iron trough.

[0026] The reference numerals in the figure are as follows: 1-Thermometer; 2-Connecting pipe; 3-Pressure plate; 4-Connecting rod; 5-Temperature probe; 6-Pressure device; 61-Support cylinder; 62-Pressure flange; 63-Bolt; 64-Compression spring; 65-First insulation layer; 7-Mounting flange; 71-Threaded hole; 8-Base; 9-Embedded insulation sleeve; 10-Second insulation layer; 11-Insulating sleeve; 12-Main iron trench lining. Detailed Implementation

[0027] This embodiment includes a main iron trough temperature monitoring device, such as... Figure 1 , Figure 2 and Figure 6 As shown, the device includes a temperature sensor 1 and a pre-embedded insulation sleeve 9. The pre-embedded insulation sleeve 9 is embedded in the main iron trough lining 12. The bottom of the pre-embedded insulation sleeve 9 is at the same horizontal level as the slag-iron boundary line of the main iron trough. The opening of the pre-embedded insulation sleeve 9 extends out of the main iron trough lining 12. The pre-embedded insulation sleeve 9 is a stainless steel pipe. The temperature probe 5 of the temperature sensor 1 is inserted into the pre-embedded insulation sleeve 9 from the opening and enters the main iron trough lining 12. A clamping device 6 is connected to the temperature sensor 1. The clamping device 6 clamps the temperature sensor 1 so that the temperature probe 5 at the end of the temperature sensor 1 passes through the pre-embedded insulation sleeve 9 and comes into close contact with the main iron trough lining 12.

[0028] like Figure 2 , Figure 3 and Figure 5 As shown, a clamping plate 3 is coaxially fixedly connected to the thermometer 1 via a connecting pipe 2; a clamping device 6 is fixedly installed on the outer wall of the main iron trough lining 12, and the clamping device 6 clamps the clamping plate 3. An insulating sleeve 11 is coaxially fixedly connected to the clamping plate 3. The temperature measuring probe 5 of the thermometer 1 is fixedly installed on the end of the insulating sleeve 11 away from the clamping plate 3. A connecting rod 4 is installed on the thermometer 1, and the connecting rod 4 passes through the connecting pipe 2 and the insulating sleeve 11 in sequence and connects to the temperature measuring probe 5; a second insulation layer 10 is provided on the inner wall of the pre-embedded insulation sleeve 9. The second insulation layer 10 is a flexible insulation layer. The insulating sleeve 11 passes through the second insulation layer 10 and fits tightly against the second insulation layer 10, which can effectively prevent external air from entering the temperature measuring point, thereby improving the accuracy of temperature measurement.

[0029] like Figure 5As shown, the clamping device 6 includes a support cylinder 61, a clamping flange 62, bolts 63, and a compression spring 64. A mounting flange 7 is fixedly connected to one end of the support cylinder 61. The mounting flange 7 is connected to the outer wall of the main iron trench lining 12. The outer circumferential surface of the clamping flange 62 is clearance-fitted with the inner wall of the support cylinder 61. The clamping flange 62 is slidably fitted within the support cylinder 61. The connecting pipe 2 passes through the clamping flange 62 and is slidably fitted with it. The clamping plate 3 is located inside the support cylinder 61. The compression spring 64 is sleeved on the connecting pipe 2. One end of the compression spring 64 abuts against the clamping plate 3, and the other end of the compression spring 64 abuts against the clamping flange 62. The clamping flange 62 has a through hole, and the mounting flange 7 has a threaded hole 71 corresponding to the through hole. The bolt 63 passes through the through hole on the clamping flange 62 and is threaded into the threaded hole 71 on the mounting flange 7. A first insulation layer 65 is attached to the inner wall of the support cylinder 61. The first insulation layer 65 is a flexible insulation layer.

[0030] like Figure 1-2 As shown, a base 8 is installed on the outer wall of the main iron trench lining 12, and a mounting flange 7 is connected to the base 8. The clamping device 6 is fixedly installed on the mounting flange 7. In actual installation, the angle of the base 8 can be set as needed, such as... Figure 7 As shown, the side wall of the base 8 connected to the mounting flange 7 and the side wall of the base 8 connected to the main iron trench lining 12 are parallel to each other, allowing the temperature sensor 1 to be directly inserted into the main iron trench lining 12. Figure 6 As shown, in some other embodiments, the angle between the side wall of the base 8 connected to the mounting flange 7 and the side wall of the base 8 connected to the main iron trench lining 12 is greater than zero degrees, so that the temperature sensor 1 can be inserted obliquely into the main iron trench lining 12 to meet different installation requirements.

[0031] When installing thermometer 1, if Figure 5 As shown, the compression spring 64 is fitted onto the connecting pipe 2, and the clamping flange 62 is fitted onto the connecting pipe 2, so that the compression spring 64 is located between the clamping plate 3 and the clamping flange 62. Then, the temperature probe 5 is inserted into the pre-embedded insulation sleeve 9 through the mounting flange 7 and the base 8 until the temperature probe 5 contacts the temperature measuring point of the main iron trench lining 12. At the same time, the clamping flange 62 enters the support cylinder 61. Then, the bolt 63 is passed through the clamping flange 62 and connected to the threaded hole 71. The bolt 63 presses the clamping flange 62, causing the clamping flange 62 to push the compression spring 64 and press the clamping plate 3, ensuring that the temperature probe 5 is in close contact with the temperature measuring point. When disassembling and replacing, only the bolt 63 needs to be removed to remove the temperature sensor 1, and then the replacement and installation can be carried out.

[0032] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A main iron trough temperature monitoring device, characterized in that, The device includes a thermometer (1) and a pre-embedded insulation sleeve (9). The pre-embedded insulation sleeve (9) is embedded in the main iron trough lining (12). The bottom of the pre-embedded insulation sleeve (9) is at the same level as the slag-iron junction line of the main iron trough. The opening of the pre-embedded insulation sleeve (9) extends out of the main iron trough lining (12). The temperature probe (5) of the thermometer (1) is inserted into the pre-embedded insulation sleeve (9) from the opening of the pre-embedded insulation sleeve (9) and enters the main iron trough lining (12). A clamping device (6) is connected to the thermometer (1). The clamping device (6) clamps the thermometer (1) so that the temperature probe (5) at the end of the thermometer (1) passes through the pre-embedded insulation sleeve (9) and comes into close contact with the main iron trough lining (12).

2. The main iron trough temperature monitoring device according to claim 1, characterized in that, A pressure plate (3) is coaxially fixedly connected to the thermometer (1) via a connecting pipe (2); the pressure device (6) is fixedly installed on the outer wall of the main iron trough lining (12), and the pressure device (6) presses the pressure plate (3).

3. The main iron trough temperature monitoring device according to claim 2, characterized in that, An insulating sleeve (11) is coaxially fixedly connected to the clamping plate (3). The temperature probe (5) of the thermometer (1) is fixedly installed on the end of the insulating sleeve (11) away from the clamping plate (3). A connecting rod (4) is installed on the thermometer (1). The connecting rod (4) passes through the connecting tube (2) and the insulating sleeve (11) in sequence and is connected to the temperature probe (5).

4. The main iron trough temperature monitoring device according to claim 3, characterized in that, The inner wall of the pre-embedded insulation sleeve (9) is provided with a second insulation layer (10), which is a flexible insulation layer. The insulating sleeve (11) passes through the second insulation layer (10) and is tightly attached to the second insulation layer (10).

5. The main iron trough temperature monitoring device according to claim 4, characterized in that, The clamping device (6) includes a support cylinder (61), a clamping flange (62), bolts (63), and a compression spring (64). A mounting flange (7) is fixedly connected to one end of the support cylinder (61). The mounting flange (7) is connected to the outer wall of the main iron trench lining (12). The outer circumferential surface of the clamping flange (62) is clearance-fitted with the inner wall of the support cylinder (61). The clamping flange (62) is slidably fitted inside the support cylinder (61). The connecting pipe (2) passes through the clamping flange (62) and is slidably fitted with the clamping flange (62). The clamping plate (3) is located inside the support cylinder (61). The compression spring (64) is sleeved on the connecting pipe (2). One end of the compression spring (64) abuts against the clamping plate (3), and the other end of the compression spring (64) abuts against the clamping flange (62). The clamping flange (62) has a through hole. The mounting flange (7) has a threaded hole (71) corresponding to the through hole. The bolt (63) passes through the through hole on the clamping flange (62) and is threaded into the threaded hole (71) on the mounting flange (7).

6. The main iron trough temperature monitoring device according to claim 5, characterized in that, The inner wall of the support cylinder (61) is fitted with a first insulation layer (65), which is a flexible insulation layer.

7. The main iron trough temperature monitoring device according to claim 1, characterized in that, A base (8) is installed on the outer wall of the main iron trench lining (12), and a mounting flange (7) is connected to the base (8). The clamping device (6) is fixedly installed on the mounting flange (7).

8. The main iron trough temperature monitoring device according to claim 7, characterized in that, The side wall of the base (8) connected to the mounting flange (7) and the side wall of the base (8) connected to the main iron trench lining (12) are parallel to each other.

9. The main iron trough temperature monitoring device according to claim 7, characterized in that, The angle between the side wall of the base (8) connected to the mounting flange (7) and the side wall of the base (8) connected to the main iron trough lining (12) is greater than zero degrees.

10. The main iron trough temperature monitoring device according to claim 1, characterized in that, The pre-embedded insulation sleeve (9) is a stainless steel pipe.

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