Sampling device for a top-blown furnace and method of use for a sampling device

Abstract

The application discloses a sampling device for a top-blown furnace and a sampling method for the sampling device. The sampling device comprises a pipe body, the pipe body is selectively connected with a crane, and a gas flow channel is formed in the pipe body; a gas guide member is arranged on the pipe body and is selectively connected with an external pipeline to convey nitrogen into the gas flow channel or guide the nitrogen in the gas flow channel out; a plurality of first sampling units are arranged on the outer periphery of the upper part of the pipe body in the extending direction of the pipe body, and the plurality of first sampling units are respectively adapted to sample falling materials at different heights in the top-blown furnace; and a plurality of second sampling units are arranged on the outer periphery of the lower part of the pipe body in the extending direction of the pipe body, and the plurality of second sampling units are respectively adapted to sample different height points in the top-blown furnace. The sampling device can sample materials at different height points in the top-blown furnace, and the materials can be cooled to avoid sample distortion.

Description

Technical Field

[0001] This invention relates to the field of non-ferrous metal metallurgical equipment technology, and in particular to a sampling device for a top-blown furnace and a sampling method for the sampling device. Background Technology

[0002] In related technologies, sampling devices used in top-blown furnaces cannot sample materials falling into the furnace or materials at the bottom of the furnace from multiple locations, and the samples cannot be cooled during sampling, causing the samples to react and become distorted. Therefore, how to optimize the sampling device, accurately obtain materials at different heights in the furnace, and achieve cooling of the materials to avoid material distortion has become an urgent problem to be solved in this field. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a sampling device for a top-blown furnace. The sampling device of the present invention can sample materials at different height points within the top-blown furnace and can cool the materials to prevent sample distortion.

[0004] The present invention also proposes a sampling method for the above-mentioned sampling device.

[0005] The sampling device for a top-blown furnace according to the present invention includes: a tube body, which can be selectively connected to a crane, and forms a gas flow channel inside the tube body; a gas guide, which is disposed in the tube body and can be selectively connected to an external pipeline to deliver nitrogen into the gas flow channel or to discharge nitrogen from the gas flow channel; a first sampling unit, wherein multiple first sampling units are configured and spaced apart on the upper outer periphery of the tube body in the extending direction of the tube body, and the multiple first sampling units are respectively adapted to sample materials falling at different heights inside the top-blown furnace; and a second sampling unit, wherein multiple second sampling units are configured and spaced apart on the lower outer periphery of the tube body in the extending direction of the tube body, and the multiple second sampling units are respectively adapted to sample at different height points inside the top-blown furnace.

[0006] The sampling device for a top-blown furnace according to the present invention improves sampling accuracy and sample richness by setting multiple first sampling units and second sampling units on the tube body to sample falling materials at different heights in the top-blown furnace and samples inside the top-blown furnace. When sampling through the first sampling unit and the second sampling unit, nitrogen gas is introduced into the tube body through the gas guide to cool the sampling device and the obtained sample, which can ensure the stable operation of the sampling device in the top-blown furnace and avoid the sample from reacting and becoming distorted in the top-blown furnace, thus ensuring the accuracy and authenticity of sample information.

[0007] According to some embodiments of the present invention, the first sampling unit has a sampling groove that opens toward the top of the tube.

[0008] According to some embodiments of the present invention, the first sampling unit is constructed as an inverted hollow frustum surrounding the outer periphery of the tube body.

[0009] According to some embodiments of the present invention, the distance between the plurality of first sampling units is d, and satisfies 2m≤d≤4m.

[0010] According to some embodiments of the present invention, the second sampling unit includes: a container body disposed on the outer periphery of the tube body and extending circumferentially along the tube body, forming a storage cavity for storing samples inside, and a sampling port formed on the outer side wall of the container body to communicate the storage cavity with the outside; and a cover plate selectively connected to the container body to open or close the storage cavity.

[0011] According to some embodiments of the present invention, the top of the tank is formed with an overlapping plate extending in the height direction, the overlapping plate is formed with a snap-fit ​​groove extending radially in the tank, and the cover plate is formed with a snap-fit ​​protrusion that mates with the snap-fit ​​groove.

[0012] According to some embodiments of the present invention, the second sampling unit further includes a seal, the seal being disposed at the sampling port and adapted to open the sampling port when the second sampling unit reaches a target height.

[0013] According to some embodiments of the present invention, the sampling device further includes: a baffle, the baffle being disposed inside the tube and extending along the length of the tube, the baffle dividing the gas flow channel into a first flow channel and a second flow channel, the first flow channel and the second flow channel being connected at the bottom of the tube, the first flow channel and the second flow channel being isolated from each other at the top of the tube, an air inlet communicating with the first flow channel and an air outlet communicating with the second flow channel being respectively formed at the top of the tube, and the air inlet and the air outlet being respectively provided with the gas guide.

[0014] According to some embodiments of the present invention, the gas guide includes: an inlet flange disposed at the inlet and connected to the first flow channel, the inlet flange being optionally connected to an external gas source and injecting nitrogen into the first flow channel; and an outlet flange disposed at the outlet and connected to the second flow channel, the outlet flange being connected to an external pipeline and discharging nitrogen from the second flow channel.

[0015] The sampling method for a sampling device according to the present invention is briefly described below.

[0016] The sampling method for the sampling device according to the present invention includes: connecting the sampling device to a crane and parking it at the top of the top-blown furnace under the drive of the crane; opening the gas guide and introducing nitrogen into the gas flow channel; controlling the crane to lower the sampling device to the bottom of the top-blown furnace within a specified time; after staying for the target sampling time, lifting the sampling device; controlling the gas guide to stop supplying gas and collecting samples in the first sampling unit and the second sampling unit.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the structure of a sampling device according to some embodiments of the present invention;

[0020] Figure 2 This is a schematic diagram of the top structure of a sampling device according to some embodiments of the present invention;

[0021] Figure 3 This is a schematic diagram showing the connection between the first sampling unit and the tube body of a sampling device according to some embodiments of the present invention;

[0022] Figure 4 This is a schematic diagram showing the connection between the second sampling unit and the tube body of a sampling device according to some embodiments of the present invention;

[0023] Figure 5 This is a top cross-sectional view of a sampling device according to some embodiments of the present invention;

[0024] Figure 6 This is a bottom cross-sectional view of a sampling device according to some embodiments of the present invention.

[0025] Figure label:

[0026] Sampling device 1;

[0027] Pipe body 11, first flow channel 111, second flow channel 112, baffle 113, lifting ring 114;

[0028] Air guide 12, air inlet flange 121, air outlet flange 122;

[0029] First sampling unit 13, sampling groove 131; second sampling unit 14, tank body 141, sealing element 142, sampling port 143, cover plate 144. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In related technologies, sampling devices used in top-blown furnaces cannot sample materials falling into the furnace or materials at the bottom of the furnace from multiple locations, and the samples cannot be cooled during sampling, causing the samples to react and become distorted. Therefore, how to optimize the sampling device, accurately obtain materials at different heights in the furnace, and achieve cooling of the materials to avoid material distortion has become an urgent problem to be solved in this field.

[0032] The following is for reference. Figures 1-6 A sampling device for a top-blown furnace according to an embodiment of the present invention is described.

[0033] The sampling device 1 for a top-blown furnace according to the present invention includes: a tube body 11, which can be selectively connected to a crane and forms a gas flow channel inside the tube body 11; a gas guide 12, which is disposed on the tube body 11 and can be selectively connected to an external pipeline to deliver nitrogen into the gas flow channel or to discharge nitrogen from the gas flow channel; a first sampling unit 13, which is configured as a plurality of units and is spaced apart on the upper outer periphery of the tube body 11 in the extending direction of the tube body 11, and the plurality of first sampling units 13 are respectively adapted to sample materials falling at different heights inside the top-blown furnace; and a second sampling unit 14, which is configured as a plurality of units and is spaced apart on the lower outer periphery of the tube body 11 in the extending direction of the tube body 11, and the plurality of second sampling units 14 are respectively adapted to sample points at different heights inside the top-blown furnace.

[0034] Specifically, a gas flow channel is formed inside the tube body 11. Nitrogen gas can be delivered into the gas flow channel inside the tube body 11 through the gas guide 12. During sampling, the sample is cooled by nitrogen gas to prevent the sample from reacting in the top-blown furnace, which would cause the sample information to be distorted. A lifting ring 114 can be set on the tube body 11 to facilitate connection with a crane, so that the sampling device 1 can be extended into the top-blown furnace for position adjustment or movement. The gas guide 12 can be installed at the top of the tube 11 to control the inflow and outflow of nitrogen. By connecting to an external pipeline, it can deliver nitrogen into the gas flow channel or vent nitrogen out of the gas flow channel, facilitating the cooling of the sampling device 1 and the sample obtained by the sampling device 1. Multiple first sampling units 13 and multiple second sampling units 14 are provided on the tube 11. The multiple first sampling units 13 are spaced apart along the extension direction (i.e., the length direction) of the tube 11 on the upper outer periphery of the tube 11. The multiple first sampling units 13 are used to sample materials falling at different heights in the top-blown furnace. Since the material will pass through a high temperature period when falling in the top-blown furnace, Since the flue gas is not directly fed into the molten pool, sampling the falling material is crucial. Multiple samplers are installed on the upper outer periphery of the tube 11 to accurately capture material falling at different heights, providing sample parameters for research on the top-blown furnace molten pool smelting process. Multiple second sampling units 14 are spaced apart along the lower outer periphery of the tube 11. These units are used to sample points at different heights inside the top-blown furnace, obtaining slag, sulfur, and mixed samples from different areas within the molten pool. The acquired samples directly reflect the reaction degree at different locations within the top-blown furnace and the material reaction process. The combined use of the first sampling unit 13 and the second sampling unit 14 allows the device to capture the dynamic changes of the material within the furnace, providing valuable data for subsequent laboratory analysis.

[0035] The sampling device 1 for a top-blown furnace according to the present invention improves sampling accuracy and sample richness by setting multiple first sampling units 13 and second sampling units 14 on the tube body 11. Nitrogen gas is introduced into the tube body 11 through the gas guide 12 to cool the sampling device 1 and the sample obtained, which can ensure that the sampling device 1 works stably in the top-blown furnace and avoid the sample from reacting and becoming distorted in the top-blown furnace, thus ensuring the accuracy and authenticity of the sample information.

[0036] According to some embodiments of the present invention, a sampling groove 131 open toward the top of the tube 11 is formed on the first sampling unit 13.

[0037] Specifically, each first sampling unit 13 has a sampling slot 131 formed thereon, with multiple sampling slots 131 opening towards the top of the tube body 11 to capture materials falling from different heights inside the top-blown furnace. Since the materials have a certain speed and impact force when falling inside the furnace, the open design of the sampling slots 131 allows the materials to enter smoothly while avoiding inaccurate sampling or material damage due to excessive resistance. The sampling slots 131 are located on the upper outer periphery of the tube body 11. By adjusting the position and number of sampling slots 131, accurate sampling of materials at different heights can be achieved. By forming sampling slots 131 that open towards the top of the tube body 11 on the first sampling unit 13, the sampling device 1 can more effectively capture materials falling from different heights inside the top-blown furnace, improving sampling accuracy.

[0038] According to some embodiments of the present invention, the first sampling unit 13 is constructed as an inverted hollow frustum surrounding the outer periphery of the tube body 11.

[0039] Specifically, the first sampling unit 13 is constructed as follows: Figure 2 The hollow frustum surrounding the tube 11 shown is illustrated. The first sampling unit 13 is shaped as an inverted frustum with a gap in the middle, its opening facing the top of the tube 11. Sampling slots 131, opening towards the top of the tube 11, are formed on the sidewall of the hollow frustum. These sampling slots 131 are evenly distributed along the sidewall of the frustum, ensuring the uniformity and accuracy of the sampling process. The hollow frustum design not only provides sufficient sampling area but also allows the sampling unit to better adapt to the shape and size of the tube 11, improving sampling efficiency and facilitating sample retrieval from inside the first sampling unit 13 after sampling. Due to the harsh environment inside the top-blown furnace, the first sampling unit 13 can be made of high-temperature and corrosion-resistant materials, such as cast iron, to ensure its long-term stability and durability. Multiple first sampling units 13 can be connected to the tube 11 by welding, ensuring the connection strength between the first sampling unit 13 and the tube 11. When the first sampling unit 13 takes samples in the top-blown furnace, nitrogen gas is introduced into the gas flow channel inside the tube 11 to rapidly cool the first sampling unit 13 and the tube 11, thereby avoiding sample distortion in the first sampling unit 13.

[0040] According to some embodiments of the present invention, the distance between the plurality of first sampling units 13 is d, and satisfies 2m≤d≤4m.

[0041] Specifically, the interval d between multiple first sampling units 13 satisfies 2m≤d≤4m. Sufficient interval distance can ensure that each first sampling unit 13 can independently capture materials in different areas, thereby improving the representativeness of the sampling. By reasonably setting the interval distance d, the uniformity of the sampling process at different heights and positions in the furnace can be ensured, which helps to reduce sampling errors and improve the accuracy and reliability of sampling.

[0042] According to some embodiments of the present invention, the second sampling unit 14 includes: a container 141 and a cover plate 144. The container 141 is disposed on the outer periphery of the tube 11 and extends circumferentially along the tube 11, forming a storage cavity for storing samples inside. The outer side wall of the container 141 forms a sampling port 143 that communicates the storage cavity with the outside. The cover plate 144 is selectively connected to the container 141 to open or close the storage cavity.

[0043] Specifically, the tank 141 is located on the outer periphery of the tube 11 and extends circumferentially (i.e., around the tube 11). This ensures that the tank 141 can cover a relatively wide area of ​​the lower part of the tube 11, thereby capturing samples at different heights and positions inside the furnace. A storage cavity for storing samples is formed inside the tank 141. A sampling port 143 is designed on the outer wall of the tank 141, which connects the storage cavity to the outside. The tank 141 samples the inside of the furnace through the sampling port 143. The cover 144 is selectively connected to the tank 141 to open or close the storage cavity. When sampling is required, the cover 144 can be opened to remove the sample from the storage cavity; after sampling is completed, the cover 144 can be closed to prevent external contaminants from entering the storage cavity and protect the integrity of the sample. The connection between the cover 144 and the tank 141 can be achieved by bolts, snaps, or other methods to ensure the stability and sealing of the cover 144. During sampling, a crane moves the tube 11 and the second sampling unit 14 mounted on it to a predetermined position inside the furnace. Because the tank 141 extends circumferentially along the tube 11, it can cover a relatively wide area inside the furnace, thus capturing samples at different heights and positions. When sampling is required, the operator can open the cover 144 to remove the sample from the storage chamber. After sampling is complete, the cover 144 is closed again to ensure the integrity and safety of the sample.

[0044] The tank body 141 can be constructed of stainless steel to adapt to the sampling environment inside the top-blown furnace. The tank body 141 is connected to the pipe body 11 by welding to ensure the connection strength of the pipe body 11. The interval between multiple second sampling units 14 is within the range of 0.2m to 0.3m to ensure that the second sampling unit 14 can obtain samples from multiple points inside the top-blown furnace.

[0045] According to some embodiments of the present invention, an overlapping plate extending in the height direction is formed on the top of the tank body 141, a snap-fit ​​groove extending radially in the tank body 141 is formed on the overlapping plate, and a snap-fit ​​protrusion that mates with the snap-fit ​​groove is formed on the cover plate 144.

[0046] Specifically, the top of the tank 141 has an overlapping plate extending along the height direction. The overlapping plate not only enhances the structural strength of the tank 141, but also provides reliable support for its connection with the cover plate 144. On the overlapping plate, a snap-fit ​​groove extends radially along the tank 141. The cover plate 144 has a snap-fit ​​protrusion that matches the snap-fit ​​groove on the tank 141. The snap-fit ​​protrusion and the snap-fit ​​groove cooperate to make the cover plate 144 firmly connected to the tank 141, preventing loosening or falling off during the sampling process. It is not only easy to install, but also has high reliability and durability, and can meet the working requirements of the sampling device 1 in harsh environments.

[0047] According to some embodiments of the present invention, the second sampling unit 14 further includes a seal 142, which is disposed at the sampling port 143 and adapted to open the sampling port 143 when the second sampling unit 14 reaches the target height.

[0048] Specifically, the sealing element 142 is set at the sampling port 143 to control the opening and closing of the sampling port 143. When the second sampling unit 14 reaches the target height (i.e., the predetermined sampling position), the sealing element 142 will open the sampling port 143 in a timely manner to allow the sample to enter the storage cavity. The sealing element 142 can be constructed as a wooden plug or a high-temperature resistant ceramic material. The wooden plug can block the molten material from entering the storage cavity for a period of time until the second sampling unit 14 reaches the target height. When the second sampling unit 14 enters the top-blown furnace, nitrogen gas can be introduced into the storage cavity and the sealing element 142 can be used to seal the sampling port 143. This can prevent the sealing element 142 from being squeezed into the storage cavity by the molten material during the process of extending into the top-blown furnace, and prevent the molten material from entering the storage cavity in advance and affecting the sampling results. When the second sampling unit 14 descends to the predetermined height with the tube 11, the sealing element 142 will automatically open the sampling port 143 due to changes in temperature or pressure.

[0049] According to some embodiments of the present invention, the sampling device 1 further includes: a baffle 113, which is disposed inside the tube body 11 and extends along the length of the tube body 11. The baffle 113 divides the gas flow channel into a first flow channel 111 and a second flow channel 112. The first flow channel 111 and the second flow channel 112 are connected at the bottom of the tube body 11 and isolated from each other at the top of the tube body 11. An air inlet communicating with the first flow channel 111 and an air outlet communicating with the second flow channel 112 are respectively formed at the top of the tube body 11. A gas guide 12 is provided at the air inlet and the air outlet respectively.

[0050] Specifically, baffle 113 is disposed inside the tube 11 and extends along the length of the tube 11 (i.e., the axial direction of the tube 11). Baffle 113 divides the gas flow channel into a first flow channel 111 and a second flow channel 112. Under the action of baffle 113, the first flow channel 111 and the second flow channel 112 are connected at the bottom of the tube 11, and nitrogen can flow from the first flow channel 111 into the second flow channel 112 to achieve gas circulation. At the top of the tube 11, the first flow channel 111 and the second flow channel 112 are isolated from each other, so that independent air inlets and outlets are formed on the tube 11 respectively. The first flow channel 111 is connected to the air inlet, and the second flow channel 112 is connected to the air outlet. Air guides 12 are provided at the inlet and outlet to control and regulate the inflow and outflow of gas. By dividing the gas flow channel into a first flow channel 111 and a second flow channel 112, and forming independent inlets and outlets at the top of the tube 11, the flow of gas can be controlled and regulated more precisely. This helps to reduce turbulence and eddies in the flow channel, improve the flow efficiency and stability of the gas, thereby improving the cooling efficiency of nitrogen on the tube 11 and the first sampling unit 13 and the second sampling unit 14, and ensuring sampling accuracy.

[0051] According to some embodiments of the present invention, the gas guide 12 includes: an inlet flange 121, which is disposed at the inlet and connected to the first flow channel 111, and the inlet flange 121 can be selectively connected to an external gas source and inject nitrogen into the first flow channel 111; and an outlet flange 122, which is disposed at the outlet and connected to the second flow channel 112, and the outlet flange 122 is connected to an external pipeline and exhausts the nitrogen in the second flow channel 112.

[0052] Specifically, an inlet flange 121 is located at the inlet and connected to the first flow channel 111. The inlet flange 121 is adapted to connect to an external gas source and inject nitrogen into the first flow channel 111. The inlet flange 121 is usually connected to the external gas source by bolts or other fastening devices. This connection method ensures a stable supply of nitrogen and precise control of the flow rate. Through the inlet flange 121, nitrogen can be injected into the first flow channel 111 and the second flow channel 112 to cool the sampling device 1 and the sample, avoiding sample reaction distortion. An outlet flange 122 is located at the outlet and connected to the second flow channel 112. The outlet flange 122 is adapted to connect to an external pipeline and exhaust the nitrogen in the second flow channel 112, thereby realizing the circulation of nitrogen in the gas flow channel and improving the nitrogen cooling efficiency.

[0053] The sampling method for the sampling device 1 according to the present invention is briefly described below.

[0054] The sampling method for the sampling device 1 according to the present invention includes: connecting the sampling device 1 to a crane and parking it at the top of the top-blown furnace under the drive of the crane; opening the gas guide 12 and introducing nitrogen into the gas flow channel; controlling the crane to lower the sampling device 1 to the bottom of the top-blown furnace within a specified time; after staying for the target sampling time, lifting the sampling device 1; controlling the gas guide 12 to stop supplying gas and collecting samples in the first sampling unit 13 and the second sampling unit 14.

[0055] Specifically, firstly, the sampling device 1 is connected to a crane. The crane, as the main moving tool, is used to precisely position the sampling device 1 at the top of the top-blown furnace. Driven by the crane, the sampling device 1 is smoothly placed on top of the furnace, ensuring it is aligned with the furnace opening and in a stable state. The gas guide 12 on the sampling device 1 is opened, and nitrogen gas is introduced into the gas flow channel to cool the sampling device 1. After assembling the second sampling unit 14, nitrogen gas is introduced into the tank 141, and the sampling port 143 is sealed with the sealing element 142. The crane is then controlled to slowly lower the sampling device 1 to the bottom of the top-blown furnace within a specified time. When the sampling device 1 reaches the target sampling position, it is held for a period of time to allow the sample to fully enter the sampling unit for target sampling. The sampling time should be determined based on the properties of the materials in the furnace, the reaction conditions, and the required sample quantity. During the sampling dwell period, nitrogen gas is continuously introduced to cool the sample and sampling device 1. After the dwell time ends, the crane is controlled to smoothly lift the sampling device 1 and return it to a safe position. The gas guide 12 is closed, and the nitrogen gas supply is stopped. Samples in the first sampling unit 13 and the second sampling unit 14 are collected. By precisely controlling the position and descent speed of the sampling device 1 and the precise adjustment of the nitrogen gas supply through the crane, sample distortion is avoided. This method combines multiple steps such as crane operation and nitrogen gas supply, which can accurately obtain samples from different sites in a short time, improve sampling efficiency and sampling accuracy, and provide reliable data support for subsequent laboratory analysis and testing.

[0056] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0057] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0058] In the description of this invention, "a plurality of" means two or more.

[0059] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0060] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sampling device for a top-blown furnace, characterized in that, include: Pipe body (11), which can be optionally connected to a crane, and a gas flow channel is formed inside the pipe body (11); A gas guide (12) is disposed on the pipe body (11) and can be selectively connected to an external pipeline to deliver nitrogen into the gas flow channel or to vent nitrogen from the gas flow channel. The first sampling unit (13) is constructed in multiple ways and is spaced apart on the upper outer periphery of the tube body (11) in the extension direction of the tube body (11). The multiple first sampling units (13) are respectively adapted to sample the falling material at different heights in the top blown furnace. The second sampling unit (14) is constructed in multiple ways and is spaced apart on the lower outer periphery of the tube body (11) in the extension direction of the tube body (11). The multiple second sampling units (14) are respectively adapted to sample different height points inside the top blown furnace.

2. The sampling device for a top-blown furnace according to claim 1, characterized in that, The first sampling unit (13) has a sampling groove (131) that opens toward the top of the tube (11).

3. The sampling device for a top-blown furnace according to claim 2, characterized in that, The first sampling unit (13) is constructed as an inverted hollow frustum surrounding the outer periphery of the tube body (11).

4. The sampling device for a top-blown furnace according to claim 3, characterized in that, The distance between multiple first sampling units (13) is d, and satisfies 2m≤d≤4m.

5. The sampling device for a top-blown furnace according to claim 1, characterized in that, The second sampling unit (14) includes: The tank (141) is disposed on the outer periphery of the tube (11) and extends circumferentially along the tube (11), forming a storage cavity for storing samples inside. The outer wall of the tank (141) has a sampling port (143) that connects the storage cavity to the outside. A cover plate (144) is optionally connected to the tank body (141) to open or close the storage cavity.

6. The sampling device for a top-blown furnace according to claim 5, characterized in that, The top of the tank (141) forms an overlapping plate extending in the height direction, and a snap-fit ​​groove extending radially along the tank (141) is formed on the overlapping plate. The cover plate (144) has a snap-fit ​​protrusion that mates with the snap-fit ​​groove.

7. The sampling device for a top-blown furnace according to claim 6, characterized in that, The second sampling unit (14) further includes: A seal (142) is disposed at the sampling port (143) and adapted to open the sampling port (143) when the second sampling unit (14) reaches the target height.

8. The sampling device for a top-blown furnace according to claim 3, characterized in that, Also includes: A baffle is disposed inside the tube body (11) and extends along the length of the tube body (11). The baffle divides the gas flow channel into a first flow channel (111) and a second flow channel (112). The first flow channel (111) and the second flow channel (112) are connected at the bottom of the tube body (11) and isolated from each other at the top of the tube body (11). An air inlet communicating with the first flow channel (111) and an air outlet communicating with the second flow channel (112) are respectively formed at the top of the tube body (11). The air inlet and the air outlet are respectively provided with the air guide (12).

9. The sampling device for a top-blown furnace according to claim 8, characterized in that, The air guide (12) includes: An air inlet flange (121) is provided at the air inlet and connected to the first flow channel (111). The air inlet flange (121) can be selectively connected to an external air source and inject nitrogen into the first flow channel (111). An outlet flange (122) is provided at the outlet and communicates with the second flow channel (112). The outlet flange (122) is connected to an external pipeline and discharges nitrogen gas from the second flow channel (112).

10. A sampling method for use with the sampling device according to any one of claims 1-9, characterized in that, include: The sampling device is connected to a crane and placed on top of the top-blown furnace under the crane's drive. The gas guide (12) is opened and nitrogen gas is introduced into the gas flow channel. The crane is controlled to lower the sampling device to the bottom of the top-blown furnace within a specified time. After the target sampling time is reached, the sampling device is lifted up. The gas guide (12) is controlled to stop supplying gas and the samples in the first sampling unit (13) and the second sampling unit (14) are collected.

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