Monitoring device for working state of swinging flow nozzle of blast furnace

Abstract

The utility model discloses a blast furnace swinging flow nozzle working state monitoring device, which comprises a swinging flow nozzle, a plurality of temperature measuring units are distributed on the outer walls of the two sides of the swinging flow nozzle, each temperature measuring unit comprises a temperature sensor, a heat conductor and a magnet, the temperature sensors are fixedly connected with the heat conductors, and the magnets are fixedly connected with the heat conductors. And the heat conductor is adsorbed and fixed on the outer wall of the swinging flow nozzle through the magnet. According to the blast furnace swinging flow nozzle working state monitoring device disclosed by the utility model, the plurality of temperature measuring units are arranged on the outer wall of the swinging flow nozzle, so that the temperature of local positions of the outer wall of the swinging flow nozzle can be detected, and the working state of the swinging flow nozzle can be monitored according to the temperature detected by the temperature sensor of each temperature measuring unit. The thickness of the side wall of the swinging flow nozzle, whether the side wall of the swinging flow nozzle has the burn-through risk or not and whether the refractory castable in the swinging flow nozzle needs to be replaced or not can be judged, and the position and range with the burn-through risk can also be judged.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace swing spouts, in particular to a blast furnace swing spout working state monitoring device. Background Art

[0002] As a special equipment for tapping iron in iron-making blast furnace, the swing spout is installed under the tapping site to inject the molten iron flowing out of the iron ditch into any molten iron tank under the tapping site platform. Due to the nature of the work, the swing spout has a steel shell on the outside and refractory castables on the inside. During the pouring of refractory castables, affected by gravity, the density of the refractory castables at the bottom of the swing spout is larger and the thickness is thicker; the density of the refractory castables on both sides of the swing spout is relatively small and the thickness is thinner.

[0003] Under long-term use, affected by the high temperature, scouring and erosion of molten iron, after the amount of iron passing through reaches a certain level, the refractory castable in the swinging spout will become thinner and there is a risk of burn-through, especially the thinner refractory castables on both sides of the swinging spout, which are most prone to burn-through. To avoid this problem, regular inspections are required, and the refractory castables must be replaced after confirming that they are about to burn through. The existing inspection of refractory castables in the swinging spout mainly relies on manual observation with the naked eye. However, the swinging spout is covered with a dust removal cover plate. Not only is it blocked by the dust removal cover plate, but also slag iron bonding will form in the swinging spout during the iron-discharging process. After the slag iron bonding, it is difficult to see the degree of internal erosion with the naked eye. It is difficult to rely on manual observation with the naked eye, and the accuracy of the inspection cannot be guaranteed. The stability is poor and the accuracy is low. Utility Model Content

[0004] The utility model aims to provide a device for monitoring the working state of a blast furnace swing nozzle.

[0005] The technical solution for achieving the purpose of the utility model is: a blast furnace swing flow nozzle working status monitoring device, including a swing flow nozzle, a plurality of temperature measuring units are distributed on the outer walls on both sides of the swing flow nozzle, the temperature measuring unit includes a temperature sensor, a heat conductor and a magnet, the temperature sensor is fixedly connected to the heat conductor, the heat conductor is fixed to the outer wall of the swing flow nozzle by adsorption of the magnet, the heat conductor is located between the temperature sensor and the outer wall of the swing flow nozzle, the surface of the heat conductor on one side close to the temperature sensor is in contact with the temperature sensor, the heat conductor extends to a side away from the temperature sensor with an extension portion, and the extension portion is in contact with the outer wall of the swing flow nozzle.

[0006] Furthermore, all the temperature sensors are each connected to a control unit for communication. The temperature sensor detects the temperature data of the outer wall of the swing nozzle in real time, and sends the detected temperature data to the control unit, which processes and analyzes the detected temperature data to determine whether the detected temperature data is higher than a set value. If the detected temperature data is higher than the set value, it is determined that the outer wall of the swing nozzle is about to burn through, and there is a risk of burning through, and the refractory castable needs to be replaced. Compared with manual analysis and judgment, the control unit has higher processing efficiency and better effect.

[0007] Furthermore, the temperature sensor is connected to the control unit through a wireless transmitter. The temperature sensor can be connected to the control unit through a wired transmitter or through a wireless transmitter. Due to the high temperature working environment, the wireless transmitter is safer and more stable than the wired transmitter.

[0008] Furthermore, the control unit is an MCU controller or a PLC controller.

[0009] Furthermore, the control unit is also connected to an alarm device. When the control unit determines that the detected temperature data is higher than a set value and the outer wall of the swing nozzle has a risk of burning through, the control unit controls the alarm device to send an alarm signal so that the operator can know the situation in time and replace the refractory castable in the swing nozzle in time.

[0010] Furthermore, the alarm device is an alarm bell or an alarm light.

[0011] Furthermore, the heat conductor is made of steel, which absorbs heat and magnetism, meeting the use requirements and being more convenient.

[0012] Furthermore, the cross-section of the heat conductor is T-shaped, and the magnet is located in the notch on the side of the heat conductor. After the magnet is located in the notch on the side of the heat conductor, the heat conductor can be fixed to the outer wall of the swing flow nozzle by the magnet, and can also be in contact with the outer wall of the swing flow nozzle. In order to install the magnet, the T-shaped magnet with a notch on the side is easier to process and form than the slotted setting, and when the magnet is located in the notch on the side of the heat conductor, the size of the magnet is not limited by the inner diameter of the notch, and the notch that is completely open on one side is more conducive to the installation of the magnet, avoiding the situation where the magnet is too large to be installed in the slot.

[0013] Furthermore, the number of the magnets is two. The number of the magnets can be one, two or more. Two magnets can be used in a relatively small number while enabling the heat conductor to be firmly installed.

[0014] Furthermore, a reinforcing rib plate is provided on the outer wall of the swinging nozzle, and the reinforcing rib plate is distributed vertically and horizontally to form a grid structure, and the temperature measuring unit is located in the network of the reinforcing rib plate. The reinforcing rib plate of the grid structure can, on the one hand, strengthen the structural strength of the swinging nozzle; on the other hand, after the temperature measuring unit is located in the network of the reinforcing rib plate, the reinforcing rib plate can also enclose the temperature measuring unit to protect the temperature measuring unit from being hit or damaged by foreign objects.

[0015] Furthermore, the plurality of temperature measuring units on the outer walls on both sides of the swing nozzle are evenly distributed.

[0016] The utility model of the blast furnace swing spout working state monitoring device, by installing the temperature measuring unit including the temperature sensor on the outer walls on both sides of the swing spout, enables the temperature sensor to sense the temperature of the outer wall of the swing spout in real time, and then, based on the temperature sensed in real time by the temperature sensor, can judge the thickness of the side wall of the swing spout, whether the side wall of the swing spout has the risk of burning through, and whether the refractory castable in the swing spout needs to be replaced. The utility model of the blast furnace swing spout working state monitoring device, converts the thickness difference of the side wall of the swing spout into the temperature signal of the outer wall of the swing spout. On the one hand, the temperature signal detection method is mature and convenient, and compared with manual observation, the timeliness, accuracy and stability of the detection are greatly improved; on the other hand, when detecting the temperature signal of the outer wall of the swing spout, the detection point is located outside the swing spout, whether it is the setting of the temperature measuring unit or the transmission of the temperature signal after the temperature sensor detects, it is more convenient.

[0017] The utility model discloses a device for monitoring the working status of a blast furnace swing spout. A plurality of temperature measuring units are arranged on the outer wall of the swing spout, which can detect the temperature of a local position of the outer wall of the swing spout. According to the temperature detected by the temperature sensor of each temperature measuring unit, not only the thickness of the side wall of the swing spout, whether the side wall of the swing spout has the risk of burning through, and whether the refractory castable in the swing spout needs to be replaced can be judged, but also the position and range of the risk of burning through can be judged, so as to have a more detailed understanding and judgment of the condition of the refractory castable in the swing spout, thereby facilitating subsequent maintenance work.

[0018] The utility model discloses a device for monitoring the working state of a blast furnace swing nozzle. Under the heat conduction effect of the heat conductor, the temperature sensor can accurately detect the temperature of the outer wall of the swing nozzle. At the same time, combined with the magnet, the temperature sensor can be conveniently installed on the outer wall of the swing nozzle, so that the installation and fixation of the temperature measuring unit is flexible and convenient, and it can not only be disassembled and assembled at any time, but also be flexibly adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model of a blast furnace swing nozzle working state monitoring device;

[0020] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure along line AA;

[0021] Figure 3 It is a structural schematic diagram of a temperature measuring unit in a blast furnace swing nozzle working state monitoring device of the utility model;

[0022] Figure 4 The utility model is a control structure diagram of a blast furnace swing nozzle working state monitoring device. DETAILED DESCRIPTION

[0023] The preferred embodiment of the blast furnace swing nozzle working state monitoring device of the utility model is described in detail below in conjunction with the accompanying drawings:

[0024] like Figures 1 to 3 As shown, a device for monitoring the working status of a blast furnace swing flow nozzle comprises a swing flow nozzle 10, and a plurality of temperature measuring units 1 are distributed on the outer walls on both sides of the swing flow nozzle 10, and the temperature measuring unit 1 comprises a temperature sensor 11, a heat conductor 12 and a magnet 13, the temperature sensor 11 is fixedly connected to the heat conductor 12, and the heat conductor 12 is adsorbed and fixed on the outer wall of the swing flow nozzle 10 by the magnet 13, the heat conductor 12 is located between the temperature sensor 11 and the outer wall of the swing flow nozzle 10, a side surface of the heat conductor 12 close to the temperature sensor 11 is in contact with the temperature sensor 11, and the heat conductor 12 extends to a side away from the temperature sensor 11 with an extension portion 121, and the extension portion 121 is in contact with the outer wall of the swing flow nozzle 10.

[0025] In the utility model, the temperature measuring unit 1 is installed on the outer wall of the swing nozzle 10, and is used to measure the temperature of the side wall of the swing nozzle 10. The magnet 13 is used to adsorb and install the heat conductor 12 on the outer wall of the swing nozzle 10 through suction; the heat conductor 12 is a ferromagnetic material, which provides an adsorbent for the adsorption and installation of the magnet 13. At the same time, the heat conductor 12 is an intermediate heat-conducting structure, which is installed between the temperature sensor 11 and the outer wall of the swing nozzle 10, and is used to conduct the heat of the outer wall of the swing nozzle 10 to the temperature sensor 11; the temperature sensor 11 is fixedly connected to the heat conductor 12, and under the heat conduction effect of the heat conductor 12, the temperature sensor 11 is used to sense and detect the temperature of the outer wall of the swing nozzle 10.

[0026] The utility model of the blast furnace swing nozzle working state monitoring device, when working, the temperature sensor 11 in the temperature measuring unit 1 senses the temperature of the outer wall of the swing nozzle 10 in real time, and judges the thickness of the side wall of the swing nozzle 10 according to the temperature sensed in real time by the temperature sensor 11, and then judges whether the side wall of the swing nozzle 10 has the risk of burning through, and whether the refractory castable in the swing nozzle 10 needs to be replaced. If the temperature sensor 11 senses that the temperature of the outer wall of the swing nozzle 10 is low, lower than the set value, it is judged that the thickness of the side wall of the swing nozzle 10 is thicker, the side wall of the swing nozzle 10 does not have the risk of burning through temporarily, and the refractory castable in the swing nozzle 10 does not need to be replaced temporarily; if the temperature sensor 11 senses that the temperature of the outer wall of the swing nozzle 10 is high, higher than the set value, it is judged that the thickness of the side wall of the swing nozzle 10 is thinner, the side wall of the swing nozzle 10 has the risk of burning through temporarily, and the refractory castable in the swing nozzle 10 needs to be replaced.

[0027] The utility model blast furnace swing spout working state monitoring device, by installing the temperature measuring unit 1 including the temperature sensor 11 on the outer walls of both sides of the swing spout 10, enables the temperature sensor 11 to sense the temperature of the outer wall of the swing spout 10 in real time, and then according to the temperature sensed in real time by the temperature sensor 11, it can judge the thickness of the side wall of the swing spout 10, whether the side wall of the swing spout 10 has the risk of burning through, and whether the refractory castable in the swing spout 10 needs to be replaced. The utility model blast furnace swing spout working state monitoring device, converts the thickness difference of the side wall of the swing spout 10 into the temperature signal of the outer wall of the swing spout 10. On the one hand, the detection method of the temperature signal is mature and convenient, and compared with manual observation, the timeliness, accuracy and stability of the detection are greatly improved; on the other hand, when detecting the temperature signal of the outer wall of the swing spout 10, the detection point is located outside the swing spout 10, whether it is the setting of the temperature measuring unit 1 or the transmission of the temperature signal after the temperature sensor 11 detects, it is more convenient.

[0028] The utility model discloses a device for monitoring the working status of a blast furnace swing spout. A plurality of temperature measuring units 1 are arranged on the outer wall of the swing spout 10, so as to detect the temperature of a local position of the outer wall of the swing spout 10. According to the temperature detected by the temperature sensor 11 of each temperature measuring unit 1, not only the thickness of the side wall of the swing spout 10, whether the side wall of the swing spout 10 has the risk of burning through, and whether the refractory castable in the swing spout 10 needs to be replaced can be determined, but also the position and range of the risk of burning through can be determined, so as to have a more detailed understanding and judgment of the condition of the refractory castable in the swing spout 10, thereby facilitating subsequent maintenance work.

[0029] In the utility model, the device for monitoring the working status of the swinging nozzle of a blast furnace can, under the heat conduction effect of the heat conductor 12, the temperature sensor 11 can accurately detect the temperature of the outer wall of the swinging nozzle 10. At the same time, combined with the magnet 13, the temperature sensor 11 can be conveniently installed on the outer wall of the swinging nozzle 10, so that the installation and fixation of the temperature measuring unit 1 is flexible and convenient, and it can not only be disassembled and assembled at any time, but also be flexibly adjusted.

[0030] The utility model blast furnace swing nozzle working state monitoring device is preferably, as Figure 4 As shown, all the temperature sensors 11 are connected to a control unit 2. The temperature sensor 11 detects the temperature data of the outer wall of the swing nozzle 10 in real time, and sends the detected temperature data to the control unit 2, which processes and analyzes to determine whether the detected temperature data is higher than the set value. If the detected temperature data is higher than the set value, it is determined that the outer wall of the swing nozzle 10 is about to burn through, and there is a risk of burning through, and the refractory castable needs to be replaced. Compared with manual analysis and judgment, the control unit 2 has higher processing efficiency and better effect.

[0031] In the utility model, the blast furnace swing nozzle working state monitoring device is preferably connected to the control unit 2 through a wireless transmitter 3. The temperature sensor 11 can be connected to the control unit 2 through a wired transmitter, or can be connected to the control unit 2 through the wireless transmitter 3. Due to the high temperature working environment, the wireless transmitter 3 is safer and more stable than the wired transmitter.

[0032] The utility model discloses a device for monitoring the working state of a blast furnace swing nozzle, wherein the control unit 2 is an MCU controller or a PLC controller.

[0033] In the blast furnace swing nozzle working state monitoring device of the utility model, preferably, the control unit 2 is also connected to an alarm device 4. When the control unit 2 determines that the detected temperature data is higher than the set value and the outer wall of the swing nozzle 10 has the risk of burning through, the control unit 2 controls the alarm device 4 to send an alarm signal so that the operator can know the situation in time and replace the refractory castable in the swing nozzle 10 in time.

[0034] The utility model discloses a device for monitoring the working state of a swing spout of a blast furnace, wherein the alarm device 4 is an alarm bell or an alarm lamp.

[0035] In the utility model of the blast furnace swing nozzle working state monitoring device, preferably, the heat conductor 12 is a heat conductor made of steel. The heat conductor made of steel absorbs heat and magnetism, meets the use requirements, and the material is more convenient.

[0036] In the utility model, the working state monitoring device of the swing flow nozzle of a blast furnace is preferably, the cross section of the heat conductor 12 is T-shaped, and the magnet 13 is located in the notch on the side of the heat conductor 12. After the magnet 13 is located in the notch on the side of the heat conductor 12, the heat conductor 12 can be fixed to the outer wall of the swing flow nozzle 10 by adsorption of the magnet 13, and can also be in contact with the outer wall of the swing flow nozzle 10. In order to install the magnet 13, the T-shaped magnet 13 with a notch on the side is easier to process and form than the slotted setting, and when the magnet 13 is located in the notch on the side of the heat conductor 12, the size of the magnet 13 is not limited by the inner diameter of the notch, and the notch that is completely open on one side is more conducive to the installation of the magnet 13, avoiding the situation that the magnet 13 is too large to be installed in the slot.

[0037] In the utility model of the blast furnace swing nozzle working state monitoring device, preferably, the number of the magnets 13 is two. The number of the magnets 13 can be one, two or more. Two magnets 13 can be used in a relatively small number while the heat conductor 12 can be firmly installed.

[0038] In the utility model, the working state monitoring device of the swinging flow nozzle of a blast furnace is preferably provided with a reinforcing rib plate 101 on the outer wall of the swinging flow nozzle 10, and the reinforcing rib plates 101 are distributed vertically and horizontally to form a grid structure, and the temperature measuring unit 1 is located in the network of the reinforcing rib plates 101. The reinforcing rib plates 101 of the grid structure can, on the one hand, strengthen the structural strength of the swinging flow nozzle 10; on the other hand, after the temperature measuring unit 1 is located in the network of the reinforcing rib plates 101, the reinforcing rib plates 101 can also enclose the temperature measuring unit 1 to protect the temperature measuring unit 1 from being easily hit or damaged by foreign objects.

[0039] In the blast furnace swing nozzle working status monitoring device of the utility model, preferably, the plurality of temperature measuring units 1 on the outer walls on both sides of the swing nozzle 10 are evenly distributed.

[0040] For ordinary technicians in the technical field to which the utility model belongs, the utility model can make several simple deductions or substitutions without departing from the concept of the utility model, which should be regarded as falling within the protection scope of the utility model.

Claims

1. A blast furnace swing nozzle working state monitoring device, comprising a swing nozzle, characterized in that: A plurality of temperature measuring units are distributed on the outer walls on both sides of the swing flow nozzle, and the temperature measuring units include a temperature sensor, a heat conductor and a magnet. The temperature sensor is fixedly connected to the heat conductor, and the heat conductor is fixed to the outer wall of the swing flow nozzle by adsorption of the magnet. The heat conductor is located between the temperature sensor and the outer wall of the swing flow nozzle, and a surface of the heat conductor on one side close to the temperature sensor is in contact with the temperature sensor. The heat conductor has an extension portion extending to a side away from the temperature sensor, and the extension portion is in contact with the outer wall of the swing flow nozzle.

2. The blast furnace swing nozzle working state monitoring device according to claim 1 is characterized in that: All of the temperature sensors are respectively connected to a control unit for communication.

3. The blast furnace swing nozzle working state monitoring device according to claim 2 is characterized in that: The temperature sensor is communicatively connected to the control unit via a wireless transmitter.

4. The blast furnace swing nozzle working state monitoring device according to claim 2 is characterized in that: The control unit is an MCU controller or a PLC controller.

5. The blast furnace swing nozzle working state monitoring device according to claim 2 is characterized in that: The control unit is also communicatively connected to an alarm device.

6. The blast furnace swing nozzle working state monitoring device according to claim 5 is characterized in that: The alarm device is an alarm bell or an alarm light.

7. The blast furnace swing nozzle working state monitoring device according to claim 1 is characterized in that: The heat conductor is a heat conductor made of steel.

8. The blast furnace swing nozzle working state monitoring device according to claim 1 is characterized in that: The cross section of the heat conductor is T-shaped, and the magnet is located in a notch on the side of the heat conductor.

9. The blast furnace swing nozzle working state monitoring device according to claim 1, characterized in that: The number of the magnets is two.

10. The blast furnace swing nozzle working state monitoring device according to claim 1, characterized in that: A reinforcing rib plate is arranged on the outer wall of the swing flow nozzle, and the reinforcing rib plates are distributed vertically and horizontally to form a grid structure, and the temperature measuring unit is located in the network of the reinforcing rib plates.

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