Blast furnace charge level measuring device

Abstract

The utility model provides a blast furnace charge level measuring device which comprises a non-contact level meter, a partition component located below the non-contact level meter and a mounting seat located below the partition component, the partition component can divide the internal space of the blast furnace charge level measuring device into an upper space and a lower space, and when the blast furnace charge level measuring device is used, the upper space and the lower space are separated by the partition component. The blast furnace charge level measuring device is fixed on the top of the blast furnace through the mounting seat; the air conditioner further comprises a first air inlet component and a second air inlet component, the first air inlet component can introduce external air into the upper space, and the second air inlet component can introduce the external air into the lower space. The device further comprises a scraping component. When the blast furnace charge level measuring device is used for measuring the height of the blast furnace charge level, complex operation is not needed, the measuring precision is high, the fault probability is small, the use stability is high, the non-contact level meter can be replaced and overhauled on line, and maintenance is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of blast furnace charge level measurement, and in particular to a blast furnace charge level measurement device. Background Art

[0002] A blast furnace is a smelting equipment. When smelting iron in a blast furnace, iron ore, coke, slag-making flux and other materials are loaded from the top of the furnace, and preheated air is blown into the tuyere at the bottom of the blast furnace. In the blast furnace, the oxygen in the preheated air and the carbon in the coke burn to produce carbon monoxide and hydrogen. As the carbon monoxide and hydrogen rise, they remove the oxygen in the iron ore, thereby reducing it to obtain iron.

[0003] During the production process, it is necessary to measure the material surface height in the blast furnace in order to replenish materials in time. The traditional way to measure the material surface height of the blast furnace is to connect a heavy hammer to the lower end of the chain rope, and the chain rope is retracted and released by a winch motor. When measuring, the heavy hammer is lowered to the blast furnace material surface so that the heavy hammer contacts the blast furnace material surface, and the material surface height of the blast furnace is calculated based on the angle of rotation of the winch motor.

[0004] This method of measuring the height of the blast furnace material surface is complicated to operate, has low measurement accuracy, and is prone to failure (for example, failure of the winch motor, the hammer being buried by materials when the furnace is not in good condition or the material collapses, the chain rope being broken, etc.), resulting in failure to operate normally.

[0005] In view of this, how to simplify the blast furnace charge level measurement operation, improve the blast furnace charge level measurement accuracy, and reduce the probability of failure during the blast furnace charge level measurement process are technical problems that need to be solved by technical personnel in this field. Utility Model Content

[0006] In order to solve the above problems, the present application provides a blast furnace material level measuring device, the blast furnace material level measuring device comprises a non-contact level meter, a baffle component located below the non-contact level meter, and a mounting seat located below the baffle component, wherein the baffle component can baffle the internal space of the blast furnace material level measuring device into an upper space and a lower space, and when in use, the blast furnace material level measuring device is fixed to the blast furnace roof through the mounting seat;

[0007] The blast furnace material level measuring device further includes a first air intake component and a second air intake component, wherein the first air intake component is capable of introducing external air into the upper space, and the second air intake component is capable of introducing external air into the lower space.

[0008] In one implementation of the blast furnace material level measuring device, the non-contact level meter is a radar level meter.

[0009] An embodiment of a blast furnace material level measuring device, wherein the first air intake component includes a tubular body and a first air intake pipe, the tubular body is connected between the non-contact level meter and the baffle component, the first air intake pipe is connected to the side wall of the tubular body, and the first air intake pipe is arranged obliquely so that external gas can enter the upper space obliquely downward through the first air intake pipe.

[0010] An implementation manner of a blast furnace material level measuring device, wherein flanges are provided at the upper end of the tubular body, the lower end of the tubular body, the lower end of the non-contact level meter, and the upper end of the baffle component, the upper end flange of the tubular body is butt-jointed with the lower end flange of the non-contact level meter and fixed by threaded fasteners, and the lower end flange of the tubular body is butt-jointed with the upper end flange of the baffle component and fixed by threaded fasteners.

[0011] In one embodiment of the blast furnace material level measuring device, the mounting seat includes a cylindrical body and an end cover, the end cover is connected to the upper end of the cylindrical body, and the end cover is provided with a through hole for the detection wave of the non-contact level meter to pass through.

[0012] An embodiment of a blast furnace material level measuring device, wherein flanges are provided at the lower end of the end cover, the upper end of the cylindrical body, and the lower end of the baffle component, the lower end flange of the end cover and the upper end flange of the cylindrical body are butted against each other and fixed by threaded fasteners, and the lower end flange of the baffle component is butted against the upper end surface of the end cover and fixed by threaded fasteners.

[0013] In one embodiment of the blast furnace material level measuring device, the second air intake component includes a second air intake pipe, the second air intake pipe is connected to the end cover, and the second air intake pipe is arranged obliquely so that external gas can enter the lower space obliquely downward through the second air intake pipe.

[0014] An embodiment of a blast furnace material level measuring device comprises a scraping component, wherein the scraping component comprises a scraping element and a driving element, wherein the scraping element is located in the cylindrical body, and the driving element can drive the scraping element to move up and down and / or rotate.

[0015] An embodiment of a blast furnace material level measuring device, wherein a threaded hole is provided on the end cover, and the driving element includes a fixed part and a movable part, the fixed part is fixed to the end cover through the threaded hole, and the movable part extends into the cylindrical body and is connected to the scraper element.

[0016] An implementation of the blast furnace material level measuring device comprises a plurality of annular scraper elements arranged in sequence from top to bottom, wherein the lowest scraper element is an incomplete annular structure with a notch on one side.

[0017] The various implementations of the above-mentioned blast furnace charge level measuring device can be freely combined without conflict.

[0018] The blast furnace material level measuring device provided in the present application does not require complicated operations when measuring the blast furnace material level height. Compared with the previous measurement by lowering a heavy hammer, the measurement accuracy is higher. In addition, the blocking effect of the blocking component and the purging and cooling effects of the two-stage air intake component (the first air intake component and the second air intake component) reduce the impact of dust and high temperature in the furnace on the non-contact level meter, so the probability of failure is small, the use stability is high, and the non-contact level meter can be replaced and repaired online, which is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 An exploded view of an embodiment of a blast furnace charge level measuring device provided in the present application;

[0020] Figure 2 for Figure 1 Schematic diagram of the scraper component;

[0021] The following are the descriptions of the reference numerals:

[0022] 1 non-contact level meter, 2 blocking component, 3 mounting seat, 31 tubular body, 32 end cover, 4 first air inlet component, 41 tubular body, 42 first air inlet pipe, 5 second air inlet component, 51 second air inlet pipe, 6 scraper component, 61 scraper element, 62 cylinder, 621 cylinder body, 622 piston rod. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] like Figure 1 As shown, the blast furnace material level measuring device provided in the present application at least includes a non-contact level meter 1, a barrier component 2, a mounting seat 3, a first air intake component 4 and a second air intake component 5.

[0025] When measuring the height of the blast furnace charge surface, the non-contact level meter 1 does not contact the blast furnace charge surface, but is at a certain distance from the blast furnace charge surface. The detection principle of the non-contact level meter 1 is: when measuring, a detection wave is emitted to the blast furnace charge surface, and when the detection wave reaches the blast furnace charge surface, it will be transmitted back to the non-contact level meter 1, and the height of the blast furnace charge surface is calculated according to the transmission time. For example, the non-contact level meter 1 can be a radar level meter, an ultrasonic level meter, etc. A radar level meter with a wide range of applicable conditions and high measurement accuracy is preferred.

[0026] The barrier component 2 is located below the non-contact level meter 1. The barrier component 2 can separate the internal space of the blast furnace material level measuring device into an upper space and a lower space, so that the dust and high temperature in the lower space are not easy to spread to the non-contact level meter 1 above, so that the non-contact level meter 1 is not easy to fail, and the non-contact level meter 1 can be replaced and repaired online.

[0027] For example, the barrier component 2 can be a structure with an opening and closing function (such as a valve structure) or a structure without an opening and closing function (such as a partition structure). For the barrier component 2 without an opening and closing function, it always separates the internal space of the blast furnace material level measuring device into an upper space and a lower space. During measurement, the detection wave of the non-contact level meter 1 penetrates the barrier component 2 to reach the blast furnace material level. For the barrier component 2 with an opening and closing function, the barrier component 2 can be opened during measurement, and the upper space and the lower space are in a connected state, and the detection wave of the non-contact level meter 1 directly reaches the blast furnace material level. When not measuring, the barrier component 2 can be closed, and the upper space and the lower space are separated, reducing the influence of dust and high temperature on the non-contact level meter 1.

[0028] The mounting seat 3 is located below the baffle member 2. When in use, the blast furnace charge level measuring device is fixed to the blast furnace roof through the mounting seat 3. For example, the lower end of the mounting seat 3 can be welded and fixed to the blast furnace roof.

[0029] The first air intake component 4 can introduce external air into the upper space, and the second air intake component 5 can introduce external air into the lower space. In this way, on the one hand, it can play a cooling role, thereby further alleviating the impact of high temperature on the non-contact level meter 1, and the higher the temperature, the easier it is for dust to spread upward, so it also further alleviates the impact of dust on the non-contact level meter 1. On the other hand, it also plays a purging role to prevent dust from being deposited on the non-contact level meter 1 and the inner wall surface of the blast furnace material level measuring device.

[0030] When the above-mentioned blast furnace material level measuring device measures the blast furnace material level height, no complicated operation is required. Compared with the previous measurement by lowering a heavy hammer, the measurement accuracy is higher. In addition, the blocking effect of the blocking component 2 and the purging and cooling effects of the first air intake component 4 and the second air intake component 5 of the two-stage air intake component make the dust and high temperature in the furnace have less impact on the non-contact level meter 1, so the probability of failure is small, the use stability is high, and the non-contact level meter 1 can be replaced and repaired online, which is convenient for maintenance.

[0031] In the illustrated embodiment, Figure 1As shown, the first air inlet component 4 includes a tubular body 41 and a first air inlet pipe 42. The tubular body 41 is connected between the non-contact level meter 1 and the baffle component 2. The first air inlet pipe 42 is connected to the side wall of the tubular body 41. The first air inlet pipe 42 is arranged obliquely so that external air can enter the upper space obliquely downward through the first air inlet pipe 42.

[0032] The number of the first air inlet pipes 42 can be flexibly set according to actual needs, and can be one or two or more. When two or more first air inlet pipes 42 are provided, each first air inlet pipe 42 can be arranged at equal angles on the entire circumference of the side wall of the tubular body 41. For example, when three first air inlet pipes 42 are provided, the three first air inlet pipes 42 are arranged at intervals of 120° on the entire circumference of the side wall of the tubular body 41.

[0033] The connection mode of the tubular body 41, the non-contact level meter 1 and the barrier component 2 can be flexibly set according to actual needs. For example, they can be connected by flanges and threaded fasteners as in the illustrated embodiment, or they can be connected by internal and external threads, or they can be clamped, etc. In the illustrated embodiment, flanges are provided at the upper end of the tubular body 41, the lower end of the tubular body 41, the lower end of the non-contact level meter 1, and the upper end of the barrier component 2. The upper end flange of the tubular body 41 is butted against the lower end flange of the non-contact level meter 1 and fixed by threaded fasteners, and the lower end flange of the tubular body 41 is butted against the upper end flange of the barrier component 2 and fixed by threaded fasteners. In this way, the assembly operation is simple and the replacement of the non-contact level meter 1 is convenient.

[0034] In the illustrated embodiment, Figure 1 As shown, the mounting base 3 includes a cylindrical body 31 and an end cover 32. The end cover 32 is connected to the upper end of the cylindrical body 31, and a through hole (indicated by A in the figure) is provided on the end cover 32 for the detection wave of the non-contact level meter 1 to pass through. Of course, the through hole may not be provided, so that the detection wave of the non-contact level meter 1 passes through the end cover 32 for measurement.

[0035] The connection mode of the end cover 32, the cylindrical body 31 and the barrier component 2 can be flexibly set according to actual needs. For example, the connection can be made by flange and threaded fasteners as in the illustrated embodiment, or by internal and external thread connection, or by clamping, etc. In the illustrated embodiment, flanges are provided at the lower end of the end cover 32, the upper end of the cylindrical body 31, and the lower end of the barrier component 2. The lower end flange of the end cover 32 and the upper end flange of the cylindrical body 31 are butted and fixed by threaded fasteners, and the lower end flange of the barrier component 2 is butted and fixed by threaded fasteners. In this way, the assembly operation is simple. In addition, in the illustrated embodiment, the upper end face of the lower end flange of the end cover 32 is lower than the upper end face of the end cover 32, so that the threaded fasteners connected to the lower end flange of the end cover 32 will not interfere with the barrier component 2 connected to the upper end of the end cover 32.

[0036] In the illustrated embodiment, Figure 1 As shown, the second air inlet component 5 includes a second air inlet pipe 51, and the second air inlet pipe 51 is connected to the end cover 32. The second air inlet pipe 51 is arranged obliquely, so that the external air can enter the lower space obliquely downward through the second air inlet pipe 51. The end cover 32 is used as the installation base of the second air inlet pipe 51, so that the integration of the entire measuring device is high. Of course, the second air inlet pipe 51 may not be connected to the end cover 32. For example, like the first air inlet component 4, a tubular body may be connected between the baffle component 2 and the mounting seat 3, and the second air inlet pipe 51 may be connected to the side wall of the tubular body.

[0037] In the illustrated embodiment, Figure 1 As shown, the blast furnace material level measuring device also includes a scraper component 6. The scraper component 6 includes a scraper element 61 and a driving element. The scraper element 61 is located in the cylindrical body 31, and the driving element can drive the scraper element 61 to move up and down and / or rotate. The scraper element 61 can scrape off the dust deposited on the inner wall surface of the cylindrical body 31. In this way, on the one hand, the deposited dust can be reduced from being raised again and spreading to the non-contact level meter 1, and on the other hand, the accumulation of dust can be avoided to cause blockage and corrosion of the cylindrical body 31, which is conducive to extending the service life of the entire measuring device.

[0038] The type of driving element is not limited, as long as it can play a driving role, for example, it can be a cylinder, a hydraulic cylinder, a motor, an electric motor, etc. The driving element includes a fixed part and a movable part. The end cover 32 is provided with a threaded hole (indicated by B in the figure), and the fixed part of the driving element is fixed to the end cover 32 through the threaded hole, and the movable part of the driving element extends into the inside of the cylindrical body 31 and is connected to the scraper element 61. The end cover 32 also serves as the installation base for the second air inlet pipe 51, the driving element and the baffle component 2, so that the integration of the entire measuring device is relatively high. Of course, the driving element may not be connected to the end cover 32. For example, a supporting component may be provided separately, and the driving element may be connected to the supporting component.

[0039] In the illustrated embodiment, the driving element is a cylinder 62. The cylinder body 621 of the cylinder 62 is a fixed part, and the piston rod 622 of the cylinder 62 is a movable part. Figure 2 As shown, the cylinder body 621 of the cylinder 62 has a large diameter section (indicated by C in the figure) and a small diameter section (indicated by D in the figure), the small diameter section is threadedly connected to the threaded hole on the end cover 32, and the step surface between the large diameter section and the small diameter section rests on the upper end surface of the end cover 32, which plays a role in improving the fixing reliability of the cylinder 62.

[0040] The type of the scraping element 61 is not limited as long as it can play a scraping role, for example, it can be a sheet structure, a ring structure or a spiral structure.

[0041] In the illustrated embodiment, the scraper element 61 is an annular structure, and two (or more) annular scraper elements 61 are sequentially arranged from top to bottom, wherein the lowest scraper element 61 is an incomplete annular structure with a notch on one side. For some blast furnaces with inclined furnace roofs, it is necessary to design or cut the lower end surface of the cylindrical body 31 of the mounting seat 3 into an inclined surface to adapt thereto, and design the lowest scraper element 61 into an incomplete annular structure with a notch on one side, so that the notch side of the incomplete annular structure can correspond to the high side of the inclined lower end surface of the cylindrical body 31, thereby meeting the requirements of this situation.

[0042] The above specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A blast furnace charge level measuring device, characterized in that: The blast furnace material level measuring device comprises a non-contact material level meter (1), a baffle component (2) located below the non-contact material level meter (1), and a mounting seat (3) located below the baffle component (2), wherein the baffle component (2) is capable of dividing the internal space of the blast furnace material level measuring device into an upper space and a lower space, and when in use, the blast furnace material level measuring device is fixed to the top of the blast furnace via the mounting seat (3); The blast furnace material level measuring device further comprises a first air intake component (4) and a second air intake component (5), wherein the first air intake component (4) is capable of introducing external air into the upper space, and the second air intake component (5) is capable of introducing external air into the lower space.

2. The blast furnace charge level measuring device according to claim 1, characterized in that: The non-contact level meter (1) is a radar level meter.

3. The blast furnace charge level measuring device according to claim 1, characterized in that: The first air intake component (4) comprises a tubular body (41) and a first air intake pipe (42); the tubular body (41) is connected between the non-contact level meter (1) and the baffle component (2); the first air intake pipe (42) is connected to a side wall of the tubular body (41); the first air intake pipe (42) is arranged obliquely so that external air can enter the upper space obliquely downward through the first air intake pipe (42).

4. The blast furnace charge level measuring device according to claim 3, characterized in that: The upper end of the tubular body (41), the lower end of the tubular body (41), the lower end of the non-contact level meter (1), and the upper end of the baffle component (2) are all provided with flanges; the upper end flange of the tubular body (41) is butted against the lower end flange of the non-contact level meter (1) and fixed via threaded fasteners; the lower end flange of the tubular body (41) is butted against the upper end flange of the baffle component (2) and fixed via threaded fasteners.

5. The blast furnace charge level measuring device according to any one of claims 1 to 4, characterized in that: The mounting seat (3) comprises a cylindrical body (31) and an end cover (32), wherein the end cover (32) is connected to the upper end of the cylindrical body (31), and the end cover (32) is provided with a through hole for the detection wave of the non-contact level meter (1) to pass through.

6. The blast furnace charge level measuring device according to claim 5, characterized in that: The lower end of the end cover (32), the upper end of the cylindrical body (31), and the lower end of the baffle component (2) are all provided with flanges; the lower end flange of the end cover (32) and the upper end flange of the cylindrical body (31) are butted against each other and fixed via threaded fasteners; the lower end flange of the baffle component (2) is butted against the upper end surface of the end cover (32) and fixed via threaded fasteners.

7. The blast furnace charge level measuring device according to claim 5, characterized in that: The second air intake component (5) comprises a second air intake pipe (51), the second air intake pipe (51) being connected to the end cover (32), and the second air intake pipe (51) being arranged obliquely so that external air can enter the lower space obliquely downward through the second air intake pipe (51).

8. The blast furnace charge level measuring device according to claim 5, characterized in that: The blast furnace material level measuring device comprises a scraper component (6), wherein the scraper component (6) comprises a scraper element (61) and a driving element, wherein the scraper element (61) is located in the cylindrical body (31), and the driving element is capable of driving the scraper element (61) to move up and down and / or rotate.

9. The blast furnace charge level measuring device according to claim 8, characterized in that: The end cover (32) is provided with a threaded hole, and the driving element comprises a fixed part and a movable part, the fixed part is fixed to the end cover (32) via the threaded hole, and the movable part extends into the cylindrical body (31) and is connected to the scraper element (61).

10. The blast furnace charge level measuring device according to claim 8, characterized in that: A plurality of annular scraper elements (61) are arranged in sequence from top to bottom, wherein the lowest scraper element (61) is an incomplete annular structure with a notch provided on one side.

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