Cooling wall and blast furnace

Abstract

The utility model relates to the technical field of blast furnace body cooling, and discloses a cooling wall and a blast furnace. The cooling wall comprises a cooling wall body which comprises a plurality of convex ribs, the convex ribs are arranged on the first face of the cooling wall body, and the convex ribs are sequentially distributed in the height direction of the cooling wall body; and the reinforcing pieces are arranged in the convex ribs, and the reinforcing pieces are distributed in the extending direction of the convex ribs. The reinforcing pieces are arranged in the convex ribs of the cooling wall body, and the overall structural strength of the cooling wall can be improved by virtue of the excellent strength of the reinforcing pieces, so that the deformation resistance of the cooling wall is improved, the long-time impact of thermal stress accumulated on the cooling wall is resisted, and the overall service life of the cooling wall is prolonged. And moreover, when the cooling wall begins to be worn due to the failure of refractory protection on the inner side of the heating surface of the cooling wall, the reinforcers are arranged in the convex ribs, so that the wear is effectively resisted and the wear resistance of the heating surface of the cooling wall is improved by virtue of the excellent wear resistance, and the overall service life of the cooling wall is further prolonged.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace body cooling technology, specifically to a cooling wall and a blast furnace. Background Technology

[0002] Cooling walls are cooling devices inside blast furnaces, placed between the furnace shell and lining, and installed in parts such as the furnace body, waist, belly, and hearth.

[0003] Due to the extremely harsh environment of blast furnace smelting, the cooling walls must withstand external forces such as high temperatures, thermal shock, and compression during use. Especially after the refractory bricks are worn away, the cooling walls, relying on the slag layer formed on the hot surface for protection, are directly impacted by the furnace gas. The significant temperature difference between the cooling wall and the furnace gas creates enormous thermal stress. Prolonged impact and accumulation of this thermal stress on the cooling walls can lead to deformation, and in severe cases, even affect their service life. Utility Model Content

[0004] In view of this, the present invention provides a cooling wall to solve the problem that current cooling walls are prone to deformation under long-term impact of thermal stress. Simultaneously, the present invention provides a blast furnace.

[0005] In a first aspect, this utility model provides a cooling wall, comprising:

[0006] The cooling wall body includes multiple ribs, which are disposed on the first surface of the cooling wall body and are distributed sequentially along the height direction of the cooling wall body.

[0007] A reinforcing member is disposed inside the rib, and the reinforcing member is distributed along the extending direction of the rib.

[0008] Beneficial effects: This utility model provides a cooling wall with reinforcing members set in the ribs of the cooling wall body. With the excellent strength of the reinforcing members, the overall structural strength of the cooling wall can be improved, thereby improving the deformation resistance of the cooling wall, resisting the long-term impact of thermal stress accumulated on the cooling wall, and improving the overall service life of the cooling wall.

[0009] Furthermore, while enhancing the deformation resistance of the cooling wall, the reinforcing members can also effectively resist wear when the refractory material protection on the inner side of the heating surface of the cooling wall fails and the cooling wall begins to wear during the later stages of the blast furnace's service life, thanks to their excellent wear resistance. This significantly improves the wear resistance of the heating surface of the cooling wall, thereby further extending the overall service life of the cooling wall and providing a solid guarantee for the long-term stable operation of the blast furnace.

[0010] In one alternative embodiment, the reinforcing member is arranged in a rod shape and is continuously arranged along the extension direction of the rib.

[0011] Beneficial effects: Setting the reinforcing member as a rod-shaped structural member to conform to the shape of the rib ensures the compatibility of the reinforcing member inside the rib; setting the reinforcing member as a structural member that is continuously set along the extension direction of the rib makes it easier to set the entire reinforcing member in one rib.

[0012] In one optional embodiment, the cooling wall body further includes a mounting groove disposed inside the protruding rib. The mounting groove is continuously disposed along the extension direction of the protruding rib and has an opening communicating with the outside. The reinforcing member is installed into the mounting groove through the opening.

[0013] Beneficial effects: The mounting groove of the rib provides an installation position for the reinforcement, and the groove that connects to the outside facilitates the installation of the reinforcement into the mounting groove, thus improving the ease of installation of the reinforcement.

[0014] In one optional embodiment, the mounting groove is a through groove, and the groove opening has two openings, which are respectively located at both ends of the protruding rib.

[0015] Alternatively, the mounting groove may be configured as a blind groove, with one groove opening located at one end of the two ends of the protruding rib.

[0016] In one alternative embodiment, the end of the reinforcing member near the slot is connected to the end of the protruding rib.

[0017] Beneficial effect: Connecting the end of the reinforcing member near the slot to the end of the rib improves the stability of the reinforcing member installation, thereby improving the overall structural stability of the reinforcing member in the cooling wall body.

[0018] In one optional embodiment, the reinforcing member is one of carbon steel strip, wear-resistant alloy steel strip, carbon steel pipe, or wear-resistant alloy steel pipe.

[0019] Beneficial effects: The reinforcing member is made of one of the following: carbon steel bar, wear-resistant alloy steel bar, carbon steel pipe, or wear-resistant alloy steel pipe, to ensure the structural strength and wear resistance of the reinforcing member.

[0020] In one optional embodiment, the cooling wall body further includes a plurality of dovetail grooves, which are distributed sequentially along the height direction of the cooling wall body, with any one of the dovetail grooves located between two adjacent convex ribs.

[0021] Beneficial effects: Multiple dovetail grooves distributed sequentially along the height of the cooling wall body can be inlaid with steel bricks, refractory bricks, or sprayed with refractory materials, forming a slag skin after short-term furnace start-up, forming a self-protection system in the blast furnace; at the same time, it can also improve the cooling wall's ability to resist thermal stress deformation and extend its service life.

[0022] In one optional embodiment, the cooling wall further includes a plurality of cooling water pipe assemblies communicating with the cooling wall body, each of the cooling water pipe assemblies comprising:

[0023] Water channels are located inside the cooling wall body;

[0024] The inlet pipe and outlet pipe are respectively connected to the water channel and respectively fixedly connected to the second surface of the cooling wall body. The first surface and the second surface of the cooling wall body are arranged opposite to each other.

[0025] Beneficial effects: The cooling water pipe assembly is arranged along a certain path within the cooling wall body, allowing the cooling water to flow evenly across the cooling wall and carry away heat.

[0026] In one alternative embodiment, the cooling wall body is a pure copper structural component or a copper alloy structural component.

[0027] Beneficial effects: Copper cooling walls composed of pure copper or copper alloy structural components have excellent thermal conductivity and can withstand high heat flow impact, which plays an important role in extending the service life of the cooling wall.

[0028] Furthermore, when the cooling wall body is made of pure copper structural components or copper alloy structural components, the installation groove inside the rib and the installation of reinforcing components that enhance the structural strength can reduce the amount of copper used in the copper cooling wall and lower its cost.

[0029] Secondly, this utility model also provides a blast furnace, including the cooling wall described in any of the above embodiments.

[0030] Since the blast furnace includes cooling walls and has the same effect as cooling walls, it will not be elaborated on here. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 A schematic diagram of the structure of a cooling wall provided by this utility model;

[0033] Figure 2 A side view of a cooling wall provided by this utility model;

[0034] Figure 3 This is a partial cross-sectional view of a cooling wall provided by the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Cooling wall body; 101. Protruding rib; 1011. Mounting groove; 1012. Groove opening; 102. Dovetail groove;

[0037] 2. Reinforcing components;

[0038] 3. Cooling water pipe assembly; 301. Water channel; 302. Inlet pipe; 303. Outlet pipe. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0040] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0043] The following is combined Figures 1-3 The following describes embodiments of the present invention.

[0044] According to an embodiment of the present invention, in one aspect, a cooling wall is provided, such as... Figure 1 As shown, it includes: a cooling wall body 1 and a reinforcing member 2.

[0045] The cooling wall body 1 includes multiple ribs 101, which are disposed on the first surface of the cooling wall body 1 and are distributed sequentially along the height direction of the cooling wall body 1; the reinforcing member 2 is disposed inside the ribs 101 and is distributed along the extension direction of the ribs 101.

[0046] In the above embodiment, a reinforcing member 2 is provided in the protruding rib 101 of the cooling wall body 1. With the excellent strength of the reinforcing member 2, the overall structural strength of the cooling wall can be improved, thereby improving the deformation resistance of the cooling wall, resisting the long-term impact of thermal stress accumulated on the cooling wall, and improving the overall service life of the cooling wall.

[0047] Furthermore, while enhancing the deformation resistance of the cooling wall, the reinforcing member 2, in the later stages of the blast furnace's service life, when the refractory material protection on the inner side of the heating surface of the cooling wall fails and the cooling wall begins to wear, can effectively resist wear due to its excellent wear resistance. This significantly improves the wear resistance of the heating surface of the cooling wall, thereby further extending the overall service life of the cooling wall and providing a solid guarantee for the long-term stable operation of the blast furnace.

[0048] Specifically, the cooling wall body 1 has a first surface and a second surface. The first surface of the cooling wall body 1, also known as the hot surface, refers to the side of the cooling wall facing the center of the blast furnace; the second surface of the cooling wall body 1, also known as the cold surface, refers to the side of the cooling wall facing away from the center of the blast furnace.

[0049] Furthermore, multiple ribs 101 are distributed on the first surface near the furnace. The ribs 101 are arranged parallel to each other along the width direction of the cooling wall body 1 and are distributed sequentially along the height direction of the cooling wall body 1. The cooling wall with multiple ribs 101 has a strong ability to resist thermal stress deformation and can improve the structural stability of the cooling wall.

[0050] Furthermore, the reinforcing member 2 is disposed inside the protruding rib 101 and distributed along the extending direction of the protruding rib 101. This embodiment does not limit the specific distribution form of the reinforcing member 2. In one embodiment, the length of the reinforcing member 2 is set as an integral structural member equivalent to the length of the protruding rib 101, and it is integrally distributed along the entire length of a single protruding rib 101; in another embodiment, the reinforcing member 2 is set as a multi-segment dispersed structural member, the total length of which is equivalent to the length of the protruding rib 101, and they are sequentially distributed along the entire length of a single protruding rib 101.

[0051] Furthermore, the cooling wall body 1 can be manufactured using materials such as cast copper, cast iron, or cast steel. This embodiment does not limit the specific method by which the reinforcing member 2 is positioned inside the protruding rib 101. As one implementation, a slot is pre-drilled in the cooling wall body 1, through which the reinforcing member 2 is installed into the protruding rib 101; as another implementation, the reinforcing member 2 is placed in the corresponding mold position during the casting of the cooling wall body 1, and then directly placed inside the protruding rib 101 during the casting process.

[0052] In some embodiments, such as Figure 1 As shown, the reinforcing member 2 is arranged in the shape of a rod and is continuously arranged along the extension direction of the rib 101.

[0053] In the above embodiments, the reinforcing member 2 is set as a rod-shaped structural member to conform to the shape of the rib 101, so as to ensure the adaptability of the reinforcing member 2 inside the rib 101; the reinforcing member 2 is set as a structural member that is continuously arranged along the extension direction of the rib 101, so as to arrange the entire reinforcing member 2 in one rib 101.

[0054] Specifically, the length of the reinforcing member 2 is set to be a rod-shaped structural member with a length equivalent to that of the rib 101, and is integrally distributed along the entire length of the rib 101; the cross-sectional dimension of the reinforcing member 2 is smaller than that of the rib 101, so as to ensure that the reinforcing member 2 inside the rib 101 has sufficient accommodating space to avoid being exposed outside the rib 101.

[0055] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 As shown, the cooling wall body 1 also includes a mounting groove 1011 disposed inside the protruding rib 101. The mounting groove 1011 is continuously disposed along the extension direction of the protruding rib 101 and is provided with a slot 1012 communicating with the outside. The reinforcing member 2 is installed into the mounting groove 1011 through the slot 1012.

[0056] In the above embodiment, the mounting groove 1011 of the protruding rib 101 provides an installation position for the reinforcing member 2. The groove 1012, which communicates with the outside, facilitates the installation of the reinforcing member 2 into the mounting groove 1011, thereby improving the ease of installation of the reinforcing member 2.

[0057] Specifically, the inner contour of the mounting groove 1011 is designed to mimic the outer contour of the reinforcing member 2, and the cross-sectional dimension of the mounting groove 1011 is slightly larger than the cross-sectional dimension of the reinforcing member 2. This ensures that the reinforcing member 2 can be installed smoothly while also ensuring the tightness between the reinforcing member 2 and the protruding rib 101.

[0058] In some embodiments, such as Figure 1 , Figure 2 As shown, the mounting groove 1011 is a through groove with two openings 1012, which are respectively located at both ends of the rib 101; or, the mounting groove 1011 is a blind groove with one opening 1012, which is located at one end of the rib 101.

[0059] Specifically, when the mounting groove 1011 is a through groove, the groove opening 1012 is located at both ends of the rib 101, and the reinforcing member 2 can extend into the mounting groove 1011 from either end of the rib 101 for installation; when the mounting groove 1011 is a blind groove, the groove opening 1012 is located at one end of the rib 101, and the reinforcing member 2 can extend into the mounting groove 1011 from that end of the rib 101 for installation.

[0060] In some embodiments, such as Figure 1 , Figure 2 As shown, the end of the reinforcing member 2 near the groove 1012 is connected to the end of the protruding rib 101.

[0061] In the above embodiment, the end of the reinforcing member 2 near the slot 1012 is connected to the end of the rib 101 to improve the stability of the installation of the reinforcing member 2, thereby improving the overall structural stability of the reinforcing member 2 in the cooling wall body 1.

[0062] Specifically, the end of the reinforcing member 2 is fixedly connected to the end of the protruding rib 101 on the cooling wall body 1 by welding or threaded structure.

[0063] In some embodiments, such as Figure 1 , Figure 2 As shown, the reinforcing member 2 is one of the following: carbon steel strip, wear-resistant alloy steel strip, carbon steel pipe, or wear-resistant alloy steel pipe.

[0064] In the above embodiments, the reinforcing member 2 is made of one of the following: carbon steel strip, wear-resistant alloy steel strip, carbon steel pipe, or wear-resistant alloy steel pipe, to ensure the structural strength and wear resistance of the reinforcing member 2.

[0065] Specifically, in the actual manufacturing process of the cooling wall, different ribs 101 on the same cooling wall body 1 can be made of different reinforcing materials 2, that is, two, three, or four of the following materials can be used in an alternating or sequential arrangement: carbon steel strips, wear-resistant alloy steel strips, carbon steel pipes, and wear-resistant alloy steel pipes. This reduces manufacturing costs while ensuring the overall structural strength of the cooling wall.

[0066] In some embodiments, such as Figure 1 , Figure 2 As shown, the cooling wall body 1 also includes a plurality of dovetail grooves 102, which are distributed sequentially along the height direction of the cooling wall body 1, and any dovetail groove 102 is located between two adjacent convex ribs 101.

[0067] In the above embodiments, multiple dovetail grooves 102 distributed sequentially along the height direction of the cooling wall body 1 can be inlaid with steel bricks, refractory bricks or sprayed with refractory materials, forming a slag skin after short-term furnace start-up, forming a self-protection system in the blast furnace; at the same time, it can also improve the cooling wall's ability to resist thermal stress deformation and extend its service life.

[0068] Specifically, one of the main functions of the dovetail groove 102 is to provide support and positioning for the inlaid refractory material. For example, the dovetail groove 102 fits into the dovetail tenon on the inlay brick, allowing the inlay brick to be securely installed on the cooling wall, helping to resist wear from the furnace charge, erosion from molten slag, and scouring from the gas flow. When the refractory material is worn away, the structure of the dovetail groove 102 facilitates the formation of a slag-coated protective layer on the surface of the cooling wall. This slag layer can, to some extent, protect the cooling wall from the direct effects of high temperatures and corrosive media, reducing the heat load and erosion degree of the cooling wall, and extending its service life. The dovetail groove 102 is designed with a specific inclination angle, with its extension direction forming an angle with the longitudinal centerline of the cooling wall. This improves the stress distribution of the cooling wall in the transverse direction, enhancing its resistance to thermal stress deformation, thereby extending its service life.

[0069] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 As shown, the cooling wall also includes several cooling water pipe groups 3 connected to the cooling wall body 1. Each cooling water pipe group 3 includes: a water channel 301, an inlet pipe 302, and an outlet pipe 303.

[0070] Water channel 301 is located inside the cooling wall body 1; water inlet pipe 302 and water outlet pipe 303 are respectively connected to water channel 301 and respectively fixedly connected to the second surface of cooling wall body 1, and the first surface and the second surface of cooling wall body 1 are arranged opposite to each other.

[0071] In the above embodiment, the cooling water pipe assembly 3 is arranged in a certain path inside the cooling wall body 1 so that the cooling water can flow evenly through the cooling wall and carry away the heat.

[0072] Specifically, as mentioned above, the second side of the cooling wall body 1, also known as the cold side, refers to the side of the cooling wall facing away from the center of the blast furnace. Multiple sets of cooling water pipe assemblies 3 are provided on the cooling wall body 1 to improve heat exchange efficiency. In this embodiment, four sets of cooling water pipe assemblies 3 are arranged side-by-side in the cooling wall body 1.

[0073] In some embodiments, such as Figure 1 , Figure 2 As shown, the cooling wall body 1 is a pure copper structural component or a copper alloy structural component.

[0074] In the above embodiments, the copper cooling wall body 1 composed of pure copper structural components or copper alloy structural components has excellent thermal conductivity and can withstand high heat flow impact, which plays an important role in extending the service life of the cooling wall.

[0075] Furthermore, when the cooling wall body 1 is made of pure copper structural components or copper alloy structural components to form a copper cooling wall, the installation groove 1011 inside the protruding rib 101 and the reinforcement 2 which has the function of improving the structural strength can reduce the amount of copper material used in the copper cooling wall and reduce the cost of the copper cooling wall.

[0076] Specifically, the cooling wall body 1 is a copper cooling wall made of pure copper structural parts or copper alloy structural parts. The thermal conductivity of pure copper structural parts or copper alloy structural parts reaches 380W / (m·K), while the thermal conductivity of ordinary traditional cast iron is 38W / (m·K)~40W / (m·K). Therefore, the cooling wall body 1 cast by pure copper structural parts or copper alloy structural parts has a 4-5 times performance advantage compared with traditional cast iron cooling walls.

[0077] Furthermore, it should be noted that the hardness HB of the pure copper material of the cooling wall body 1 is 35-45, while the hardness HB of the common wear-resistant alloy steel material of the reinforcing part 2 is 110-229. The wear-resistant alloy steel material has a higher hardness, so the reinforcing part 2 has higher structural strength and wear resistance than the cooling wall body 1.

[0078] According to an embodiment of the present invention, another aspect provides a blast furnace including the cooling wall of any of the above embodiments.

[0079] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A stave cooled wall characterized by, include: The cooling wall body (1) includes multiple ribs (101), the multiple ribs (101) are disposed on the first surface of the cooling wall body (1), and the multiple ribs (101) are distributed sequentially along the height direction of the cooling wall body (1). A reinforcing member (2) is disposed inside the convex rib (101), and the reinforcing member (2) is distributed along the extending direction of the convex rib (101).

2. The stave coolin g wall of claim 1, wherein The reinforcing member (2) is rod-shaped and is continuously arranged along the extension direction of the convex rib (101).

3. The stave cool ing wall according to claim 1 or 2, characterized in that The cooling wall body (1) also includes a mounting groove (1011) provided inside the protruding rib (101). The mounting groove (1011) is continuously provided along the extension direction of the protruding rib (101) and is provided with a slot (1012) communicating with the outside. The reinforcing member (2) is installed into the mounting groove (1011) through the slot (1012).

4. The stave coolin g wall of claim 3, wherein The mounting groove (1011) is a through groove, and there are two groove openings (1012), which are respectively located at both ends of the protruding rib (101); Alternatively, the mounting groove (1011) may be configured as a blind groove, and the groove opening (1012) may be provided at one end of the two ends of the protruding rib (101).

5. The stave coolin g wall of claim 4, wherein, The end of the reinforcing member (2) near the slot (1012) is connected to the end of the rib (101).

6. The stave coolin g wall of claim 1, wherein The reinforcing member (2) is one of carbon steel strip, wear-resistant alloy steel strip, carbon steel pipe, or wear-resistant alloy steel pipe.

7. The stave coolin g wall of any one of claims 1, 2, 4-6, wherein, The cooling wall body (1) also includes a plurality of dovetail grooves (102), which are distributed sequentially along the height direction of the cooling wall body (1), and any one of the dovetail grooves (102) is located between two adjacent convex ribs (101).

8. The stave coolin g wall of any one of claims 1, 2, 4-6, characterized in that, The cooling wall also includes a plurality of cooling water pipe assemblies (3) communicating with the cooling wall body (1), each of the cooling water pipe assemblies (3) comprising: Water channel (301) is provided inside the cooling wall body (1); The inlet pipe (302) and outlet pipe (303) are respectively connected to the water channel (301) and respectively fixedly connected to the second side of the cooling wall body (1). The first side and the second side of the cooling wall body (1) are arranged opposite to each other.

9. The stave coolin g wall of any one of claims 1, 2, 4-6, wherein, The cooling wall body (1) is a pure copper structural component or a copper alloy structural component.

10. A blast furnace characterized by Includes the cooling wall as described in any one of claims 1-9.

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