Blast furnace tuyere support device and blast furnace air supply system

Abstract

The application discloses a blast furnace tuyere supporting device and a blast furnace air supply system, which comprise a base, a magnetic body, a supporting plate and a telescopic mechanism, the inner side of the base is provided with a first annular part, the outer side of the base is provided with a first matching surface, and the first matching surface is used for abutting and matching with the inner wall surface of a tuyere sleeve; the magnetic body is arranged on the base, and the magnetic body is used for magnetically fixing the base and the tuyere sleeve; the outer side of the supporting plate is provided with a second annular part, the inner side of the supporting plate is provided with a second matching surface, and the second matching surface is used for abutting and matching with the outer wall surface of a straight blow pipe; the telescopic mechanism is telescopic, the outer end of the telescopic mechanism is fixed in the first annular part, and the inner end of the telescopic mechanism is fixed in the second annular part. The technical problem that the straight blow pipe is prone to poor centering of the tuyere sleeve and air leakage after long-term use in the prior art is solved.

Description

Technical Field

[0001] This application belongs to the field of blast furnace technology, specifically relating to a blast furnace direct blowing pipe support device and a blast furnace air supply system. Background Technology

[0002] Direct-blown blast pipes are a key component of the blast furnace air supply system. They serve as a vital channel for delivering high-temperature hot air generated by the hot blast stove into the blast furnace, playing a decisive role in the stable operation and efficient production of the blast furnace. However, in existing technologies, after long-term use, direct-blown blast pipes are prone to misalignment with the tuyeres, which is detrimental to the long-term stable operation of the air supply system. Utility Model Content

[0003] To solve the above-mentioned technical problems, this application provides a blast furnace direct-blowing pipe support device. This support device can realize the alignment adjustment and correction between the direct-blowing pipe and the tuyere sleeve, ensuring the coaxiality of the direct-blowing pipe and the tuyere sleeve, thereby avoiding the situation where air leakage is easy due to poor coaxiality.

[0004] This application also provides a blast furnace air supply system including the above-mentioned support device.

[0005] The technical solution adopted to achieve the purpose of this application is as follows:

[0006] The blast furnace direct-blowing tube support device of this application includes:

[0007] The base has a first annular portion on its inner side and a first mating surface on its outer side, the first mating surface being used to fit and mate with the inner wall surface of the air vent sleeve.

[0008] A magnetic body is disposed on the base, and the magnetic body is used to magnetically fix the base to the air vent sleeve;

[0009] The tray has a second annular portion on its outer side and a second mating surface on its inner side, the second mating surface being used to fit and mate with the outer wall surface of the straight blowing pipe;

[0010] A telescopic mechanism is provided, wherein the telescopic mechanism is telescopic, the outer end of the telescopic mechanism is fixed inside the first annular portion, and the inner end of the telescopic mechanism is fixed inside the second annular portion.

[0011] In some technical solutions, a first fastener is included, which extends radially along the first annular portion and passes through the annular wall of the first annular portion, and the first fastener is used to detachably connect to or abut against the end of the telescopic mechanism toward the telescopic mechanism.

[0012] In some technical solutions, there are multiple first fasteners, which are arranged at circumferential intervals along the first annular portion, and each first fastener is detachably connected to or abuts the telescopic mechanism.

[0013] In some technical solutions, a second fastener is included, which extends radially along the second annular portion and passes through the annular wall of the second annular portion, and the second fastener is used to detachably connect to or abut against the end of the telescopic mechanism toward the telescopic mechanism.

[0014] In some technical solutions, there are multiple second fasteners, which are arranged at circumferential intervals along the second annular portion, and each second fastener is detachably connected to or abuts the telescopic mechanism.

[0015] In some technical solutions, the first mating surface is an arc-shaped surface, and the curvature of the first mating surface is consistent with the curvature of the inner peripheral wall of the air vent sleeve;

[0016] And / or, the second mating surface is an arc-shaped surface, and the curvature of the second mating surface is consistent with the curvature of the outer peripheral wall of the straight blowing pipe.

[0017] In some technical solutions, the telescopic mechanism includes:

[0018] The cylinder body, the outer end of which is fixed inside the first annular portion;

[0019] A piston, which is slidably assembled into the cylinder body, with its inner end fixed within the second annular portion;

[0020] A hydraulic pump and a hydraulic pipe are provided, one end of which is connected to the cylinder body and the other end of which is connected to the hydraulic pump. The hydraulic pump is used to deliver hydraulic fluid into the cylinder body through the hydraulic pipe to achieve sliding drive of the piston.

[0021] In some technical solutions, the magnetic body is a permanent magnet or an electromagnet;

[0022] And / or, there are multiple magnetic bodies, and the base includes an annular edge protruding from the outer periphery of the first annular portion, and the multiple magnetic bodies are disposed on the annular edge and located outside the annular edge;

[0023] And / or, the base is provided with a mounting groove, the magnet is fixed in the mounting groove, and the surface of the magnet is flush with the first mating surface.

[0024] In some technical solutions, the second mating surface of the tray is provided with an anti-slip pad;

[0025] And / or, along the extension direction of the straight blow tube, the width dimension of the tray is smaller than the width dimension of the base.

[0026] The blast furnace air supply system of this application includes a direct blowing pipe, a tuyere sleeve, and a blast furnace direct blowing pipe support device as described in any of the above technical solutions. The tuyere sleeve is fitted on the outer periphery of the direct blowing pipe. There are multiple blast furnace direct blowing pipe support devices, all of which are supported between the direct blowing pipe and the tuyere sleeve and are arranged at intervals along the circumference of the direct blowing pipe.

[0027] As can be seen from the above technical solutions, the blast furnace direct-blowing pipe support device and blast furnace air supply system of this application can realize the alignment adjustment and correction between the direct-blowing pipe and the tuyere sleeve, ensuring the coaxiality of the direct-blowing pipe and the tuyere sleeve, thereby avoiding the situation of easy air leakage due to poor coaxiality. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the support device in the embodiments of this application.

[0029] Figure 2 This is an axial cross-sectional view of the blast furnace air supply system in an embodiment of this application.

[0030] Figure 3 This is a cross-sectional schematic diagram of the blast furnace air supply system in an embodiment of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1-Base; 11-First annular portion; 12-First mating surface; 13-Annular edge; 14-Mounting groove; 2-Magnetic body; 3-Panel; 31-Second annular portion; 32-Second mating surface; 4-Telescopic mechanism; 41-Cylinder; 42-Piston; 43-Hydraulic pipe; 44-Hydraulic pump; 5-First fastener; 6-Second fastener;

[0033] 100-Support device; 200-Air outlet sleeve; 201-Large air outlet sleeve; 202-Middle air outlet sleeve; 203-Small air outlet sleeve; 300-Straight blowing pipe. Detailed Implementation

[0034] To enable those skilled in the art to better understand this application, the technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] The technical solution of this application was developed by the inventor based on the following problems and facts:

[0036] In actual production, the stable operation of the direct-blowing pipe faces many severe challenges. Due to the effect of thermal expansion and contraction, after a long period of use, the direct-blowing pipe may deform or shift, causing a large deviation in the coaxiality between the direct-blowing pipe and the air outlet sleeve. At this time, the direct-blowing pipe is prone to poor contact with the air outlet sleeve, which can lead to air leakage.

[0037] The phenomenon of blast furnace runoff not only leads to a significant loss of hot blast energy and reduces the thermal efficiency of the blast furnace, but it can also cause uneven airflow distribution inside the furnace, affecting chemical reactions and material movement, and thus seriously interfering with the normal smelting process. If the blast furnace runoff problem is not resolved in a timely and effective manner, the continuous high temperature and airflow impact may also cause local overheating of the direct-blown pipes, leading to more serious accidents such as red-hot spots and burn-through. This would not only force the blast furnace to shut down for emergency repairs, resulting in economic losses, but also pose a threat to the personal safety of on-site personnel.

[0038] Currently, most adjustments to direct-fired pipes need to be made while the blast furnace is shut down, which presents significant limitations. Production stoppages not only disrupt production plans and increase costs, but can also affect subsequent production processes and product delivery, leading to economic losses and reputational damage for the company.

[0039] Based on the above problems and facts, this application provides a blast furnace direct blowing tube support device.

[0040] like Figure 1 As shown, the blast furnace direct blowing pipe support device (hereinafter referred to as the support device) of this application includes a base 1, a magnetic body 2, a support plate 3 and a telescopic mechanism 4.

[0041] The base 1 has a first annular portion 11 on its inner side and a first mating surface 12 on its outer side. The first mating surface 12 is used to fit against the inner wall surface of the air vent sleeve 200. For example, as Figure 1 As shown, the base 1 can be made of metal and can include a plate-like structure. The first annular portion 11 can be integrally formed on the inner side of the plate-like structure by casting, specifically located below the plate-like structure. The first annular portion 11 can be a circular annular column, and in some other embodiments, the first annular portion 11 can also be a square annular column or other structures.

[0042] The first mating surface 12 can be the outer surface of the base 1, specifically the upper surface of the base 1. In actual use, the first mating surface 12 can fit and contact the inner peripheral wall of the air vent sleeve 200, thereby meeting the usage requirements for assembling and fixing the base 1 and the air vent sleeve 200, and ensuring good fit at the interface, thus improving the stability of the assembly.

[0043] It should be noted that each orientation in this application can be the orientation corresponding to the support device 100 in actual use. For example, the inner side of the support device 100 can be the bottom, the outer side of the support device 100 can be the top, the left side from bottom to top is left, the right side from bottom to top is right, the front side from bottom to top is front, and the rear side from bottom to top is rear.

[0044] A magnetic body 2 is disposed on the base 1, and the magnetic body 2 is used to magnetically fix the base 1 and the air vent sleeve 200. For example, as Figure 1 As shown, the magnetic body 2 can be a permanent magnet, specifically, a magnet or the like. In some other embodiments, the magnetic body 2 can also be an electromagnet, meaning that the magnetic body 2 only exhibits magnetism after being energized; specifically, the electromagnet can be an electromagnet. During assembly, the magnetic body 2 can generate a magnetic interaction with the air vent sleeve 200, thereby facilitating the magnetic fixation of the base 1 to the air vent sleeve 200 and improving the convenience of installation and disassembly.

[0045] The outer side of the support plate 3 is provided with a second annular portion 31, and the inner side of the support plate 3 is provided with a second mating surface 32, which is used to fit against the outer wall surface of the direct-blowing pipe 300. For example, as Figure 1 As shown, the pallet 3 can also be a plate-like structure, and the material of the pallet 3 can also be metal or the like. The second annular part 31 can be integrally formed on the outer side of the pallet 3. Specifically, the outer side of the pallet 3 can be the upper side. The second annular part 31 can be a circular columnar shape. In some other embodiments, the second annular part 31 can also be a square columnar shape or the like.

[0046] The second mating surface 32 can be the inner surface of the tray 3, specifically the lower surface of the tray 3. During assembly, the second mating surface 32 of the tray 3 can be in close contact with the outer peripheral wall of the direct blowing pipe 300, thereby improving the stability of the fit between the tray 3 and the direct blowing pipe 300.

[0047] The telescopic mechanism 4 is telescopic, with its outer end fixed inside the first annular portion 11 and its inner end fixed inside the second annular portion 31. For example, as... Figure 1 As shown, the telescopic mechanism 4 can be a hydraulic telescopic device. In some other embodiments, the telescopic mechanism 4 can also be an electric one.

[0048] The telescopic mechanism 4 can extend along the inward and outward directions, and can be adjusted in the inward and outward directions. The outer end of the telescopic mechanism 4 can be embedded in the first annular portion 11, and can be connected and fixed to the first annular portion 11. The inner end of the telescopic mechanism 4 can be embedded in the second annular portion 31, and can be connected and fixed to the second annular portion 31.

[0049] In use, the support device 100 can be installed between the direct blowing pipe 300 and the air outlet sleeve 200. The direct blowing pipe 300 can be moved inside the air outlet pipe by adjusting the extension and retraction of the telescopic mechanism 4, thereby achieving the adjustment of the coaxiality between the direct blowing pipe 300 and the air outlet pipe.

[0050] In some embodiments, the support device 100 includes a first fastener 5, which extends radially along the first annular portion 11 and passes through the annular wall of the first annular portion 11, and the first fastener 5 is used to detachably connect to or abut against the telescopic mechanism 4 at its end toward the telescopic mechanism 4.

[0051] For example, such as Figure 1 As shown, the first fastener 5 can be a bolt or the like, and the first annular portion 11 can be provided with a through hole that can penetrate the annular wall of the first annular portion 11 radially. During installation, the first fastener 5 can be passed through the through hole of the first annular portion 11, and the end of the first fastener 5 located on the inner side of the first annular portion 11 can make a stop contact with the outer wall surface of the telescopic mechanism 4, thereby fixing the outer end of the telescopic mechanism 4 inside the first annular portion 11 through the stopping action of the first fastener 5.

[0052] It should be noted that the first fastener 5 can be threadedly assembled with the first annular portion 11, and the first fastener 5 can also be threadedly fixed with the telescopic mechanism 4 at the same time. For example, the outer wall of the telescopic mechanism 4 can be provided with threaded holes for threaded assembly with the first fastener 5. This ensures the stability of the telescopic mechanism 4 assembly and fixation.

[0053] In some embodiments, there are multiple first fasteners 5, which are arranged at circumferential intervals along the first annular portion 11, and each first fastener 5 is detachably connected to or abuts against the telescopic mechanism 4.

[0054] For example, such as Figure 1 As shown, a plurality of first fasteners 5 can be arranged at equal intervals along the circumference of the first annular portion 11. Each first fastener 5 located at the end of the first annular portion 11 can make contact with the outer wall surface of the telescopic mechanism 4. In some other embodiments, each first fastener 5 can also be threadedly assembled and fixed to the telescopic mechanism 4.

[0055] In some embodiments, the support device 100 includes a second fastener 6, which extends radially along the second annular portion 31 and passes through the annular wall of the second annular portion 31, and the second fastener 6 is used to detachably connect to or abut against the end of the telescopic mechanism 4 toward the telescopic mechanism 4.

[0056] For example, such as Figure 1As shown, the second fastener 6 can be a bolt or the like, and the second annular portion 31 can be provided with a through hole that can penetrate the annular wall of the second annular portion 31 radially. During installation, the second fastener 6 can be passed through the through hole of the second annular portion 31, and the end of the second fastener 6 located on the inner side of the second annular portion 31 can make a stop contact with the outer wall surface of the telescopic mechanism 4, thereby fixing the inner end of the telescopic mechanism 4 inside the second annular portion 31 through the stopping action of the second fastener 6.

[0057] It should be noted that the second fastener 6 can be threadedly assembled with the second annular portion 31, and the second fastener 6 can also be threadedly fixed with the telescopic mechanism 4 at the same time. For example, the outer wall of the telescopic mechanism 4 can be provided with threaded holes for threaded assembly with the second fastener 6. This ensures the stability of the telescopic mechanism 4 assembly and fixation.

[0058] In some embodiments, there are multiple second fasteners 6, which are arranged at circumferential intervals along the second annular portion 31, and each second fastener 6 is detachably connected to or abuts the telescopic mechanism 4.

[0059] For example, such as Figure 1 As shown, a plurality of second fasteners 6 can be arranged at equal intervals along the circumference of the second annular portion 31. Each second fastener 6 located at the end of the second annular portion 31 can make contact with the outer wall surface of the telescopic mechanism 4. In some other embodiments, each second fastener 6 can also be threadedly assembled and fixed to the telescopic mechanism 4.

[0060] In some embodiments, the first mating surface 12 is an arc-shaped surface, and the curvature of the first mating surface 12 is consistent with the curvature of the inner peripheral wall of the air vent sleeve 200. For example, as Figure 1 As shown, the first mating surface 12 can be an arc surface, and the first mating surface 12 can protrude outward as a whole. Since the actual air vent sleeve 200 can be cylindrical, the first mating surface 12 can be adapted to the shape of the inner peripheral wall of the air vent sleeve 200, thereby increasing the contact area between the first mating surface 12 and the inner peripheral wall of the air vent sleeve 200, thus ensuring the overall fixing effect.

[0061] In some embodiments, the second mating surface 32 is an arc-shaped surface, and the curvature of the second mating surface 32 matches the curvature of the outer peripheral wall of the straight-blowing pipe 300. For example, as Figure 1 As shown, the second mating surface 32 can also be an arc surface, and the second mating surface 32 can protrude outward as a whole. Since the actual straight blowing pipe 300 can be cylindrical, the second mating surface 32 can be adapted to the shape of the outer peripheral wall of the straight blowing pipe 300, thereby increasing the contact area between the second mating surface 32 and the outer peripheral wall of the straight blowing pipe 300, thus ensuring the overall fixing effect.

[0062] In some embodiments, such as Figure 1 As shown, the telescopic mechanism 4 includes a cylinder 41, a piston 42, a hydraulic pump 44, and a hydraulic pipe 43. The outer end of the cylinder 41 is fixed inside the first annular portion 11, the piston 42 is slidably assembled inside the cylinder 41, and the inner end of the piston 42 is fixed inside the second annular portion 31. One end of the hydraulic pipe 43 is connected to the cylinder 41, and the other end of the hydraulic pipe 43 is connected to the hydraulic pump 44. The hydraulic pump 44 is used to deliver hydraulic fluid into the cylinder 41 through the hydraulic pipe 43 to achieve the sliding drive of the piston 42.

[0063] For example, such as Figure 1 As shown, the cylinder body 41 can be a hydraulic cylinder, and the piston 42 can be a piston rod. The overall radial dimension of the cylinder body 41 is larger than that of the piston 42. The cylinder body 41 has an inner bore that can extend in both the inward and outward directions. The piston 42 can be slidably fitted into the inner bore of the cylinder body 41. A fluid injection port can be provided on the cylinder wall of the cylinder body 41, which can communicate with the inner bore of the cylinder body 41. Specifically, the fluid injection port can be located on the right side wall of the cylinder body 41.

[0064] The hydraulic pipe 43 can be a flexible hose. One end of the hydraulic pipe 43 can be sealed and connected to the injection port on the cylinder 41, and the other end of the hydraulic pipe 43 can be sealed and connected to the hydraulic pump 44. In use, the hydraulic pump 44 can drive hydraulic oil or other hydraulic fluid to be delivered to the cylinder 41 through the hydraulic pipe 43. Under the action of the hydraulic fluid, the piston 42 can extend from the cylinder 41, thereby facilitating the extension and retraction of the telescopic mechanism 4. When the hydraulic fluid in the cylinder 41 flows back to the hydraulic pump 44, the piston 42 can retract into the cylinder 41.

[0065] In some embodiments, there are multiple magnetic bodies 2, and the base 1 includes an annular edge 13 protruding from the outer periphery of the first annular portion 11. The multiple magnetic bodies 2 are all disposed on the annular edge 13 and located outside the annular edge 13.

[0066] For example, such as Figure 1 As shown, the annular edge 13 is a circumferential protrusion extending beyond the first annular portion 11, and the annular edge 13 is integrally formed on the outer periphery of the base 1. The aforementioned plurality of magnetic bodies 2 can all be disposed on the annular edge 13. Specifically, the plurality of magnetic bodies 2 can all be fixed to the outer surface of the annular edge 13, and the plurality of magnetic bodies 2 can all be arranged at intervals along the circumference of the annular edge 13.

[0067] This ensures the magnetic attraction and fixing effect of the base 1 at various positions and in different directions, thereby ensuring the stability and structural strength of the connection and fixing between the base 1 and the air vent sleeve 200.

[0068] In some embodiments, the base 1 is provided with a mounting groove 14, the magnetic body 2 is fixed in the mounting groove 14, and the surface of the magnetic body 2 is flush with the first mating surface 12. For example, as Figure 1 As shown, the mounting groove 14 can be provided on the outer wall surface of the base 1. The mounting groove 14 can be a rectangular groove, and the number of mounting grooves 14 can be the same as the number of magnetic bodies 2.

[0069] During installation, multiple magnetic bodies 2 can be assembled one-to-one into multiple mounting slots 14. This ensures the installation and fixation of the magnetic bodies 2, improves the convenience and fixation of the assembly, and also makes use of the internal space of the base 1, avoiding the situation where the magnetic bodies 2 protrude from the surface of the base 1. Due to the compactness of the overall structure of the lifting support device 100.

[0070] In addition, the outer surface of each magnetic body 2 is on the same plane as the outer surface of the base 1, which makes the outer surface of the whole formed by the base 1 and the magnetic body 2 smooth, thereby ensuring the fit and fixation effect with the inner wall of the air vent sleeve 200.

[0071] In some embodiments, the second mating surface 32 of the tray 3 is provided with an anti-slip pad. For example, the anti-slip pad can be made of a high-temperature resistant material, specifically silicone or the like. The anti-slip pad can be fixed to the second mating surface 32 of the tray 3. In use, the anti-slip pad can directly contact the outer wall of the direct blowing pipe 300, thereby enhancing friction and ensuring the connection stability between the tray 3 and the direct blowing pipe 300.

[0072] In some embodiments, the width of the support plate 3 is smaller than the width of the base 1 along the extending direction of the straight-blowing pipe 300. For example, as Figure 1 As shown, the extension direction of the direct-blowing pipe 300 can be left or right. The width dimensions of the support plate 3 and the base 1 can both be corresponding dimensions in the left and right directions, with the width dimension of the support plate 3 being smaller than the width dimension of the base 1. This allows the overall design of the support device 100 to gradually increase in size from the inside out, thereby improving the overall structural stability during use.

[0073] The air supply system according to an embodiment of this application is described below.

[0074] like Figure 2 As shown, the blast furnace air supply system of this application includes a direct blowing pipe 300, a tuyere sleeve 200, and a support device 100. The support device 100 can be a blast furnace direct blowing pipe support device as described in any of the above embodiments.

[0075] The air vent sleeve 200 is fitted onto the outer periphery of the direct-blowing pipe 300, for example, as... Figure 2As shown, three air vent sleeves 200 can be provided. These three air vent sleeves 200, according to their different radial dimensions, can be designated as a large air vent sleeve 201, a medium air vent sleeve 202, and a small air vent sleeve 203. The large air vent sleeve 201, medium air vent sleeve 202, and small air vent sleeve 203 are arranged sequentially from left to right and layered together. The large air vent sleeve 201 is fitted onto the outer periphery of the medium air vent sleeve 202, and the medium air vent sleeve 202 is fitted onto the outer periphery of the small air vent sleeve 203. Both the large air vent sleeve 201 and the medium air vent sleeve 202 can surround the outer periphery of the direct-blowing pipe 300, and the right end of the direct-blowing pipe 300 can fit inside the small air vent sleeve 203.

[0076] There are multiple blast furnace direct-fired pipe support devices, all of which are supported between the direct-fired pipe 300 and the tuyeres sleeve 200 and are arranged at circumferential intervals along the direct-fired pipe 300. For example, as... Figure 3 As shown, there can be four support devices 100. The four support devices 100 can be evenly arranged in the annular space between the direct blowing pipe 300 and the air outlet sleeve 201. The four support devices 100 can be arranged at equal intervals along the circumference of the direct blowing pipe 300, that is, the central angle between any two adjacent support devices 100 is 90 degrees.

[0077] In some other embodiments, the support device 100 may also be positioned between the direct-blowing pipe 300 and the air outlet sleeve 202. In other embodiments, the support device 100 may be provided in three, five, six, or other quantities.

[0078] When the blast furnace air supply system of this application is in use, if air leakage occurs between the direct blowing pipe 300 and the tuyer sleeve 203, it indicates that there is a problem with the coaxiality of the direct blowing pipe 300 and the tuyer sleeve 203. The air leakage can be improved by adjusting the position of the direct blowing pipe 300 by driving multiple support devices 100 to extend or retract.

[0079] The following describes a specific example of the blast furnace air supply system of this application.

[0080] The blast furnace air supply system of this application includes a direct blowing pipe 300, a tuyere sleeve 201 and multiple support devices 100. The multiple support devices 100 are installed between the direct blowing pipe 300 and the tuyere sleeve 201. Each support device 100 includes a base 1, a telescopic mechanism 4 and a support plate 3.

[0081] The bottom end of the base 1 is an arc-shaped plate structure with a cylindrical inner wall surface adapted to the tuyer sleeve 201 of the blast furnace air supply system. A strong magnet is embedded within the plate for adsorption and fixation to the inner wall of the tuyer sleeve 201. The top is equipped with a columnar sleeve (first annular portion 11) and bolts. The columnar sleeve is used to connect the telescopic mechanism 4. The arc-shaped plate structure of the base 1 matches the curvature of the cylindrical inner wall surface of the sleeve to achieve a tight fit.

[0082] The telescopic mechanism 4 is a separate hydraulic lifting device. The height of the support plate 3 is adjusted by the stroke of the piston 42 to adjust the position of the end of the blast furnace direct blowing pipe 300 and to meet the lifting adjustment in various directions. The separate hydraulic lifting device includes a hydraulic pump 44, a hydraulic cylinder, and a piston 42. The hydraulic pump 44 is connected to the hydraulic cylinder through a hydraulic oil pipe, and the stroke of the piston 42 is adjusted by controlling the output pressure of the hydraulic pump 44.

[0083] The top of the support plate 3 is an arc-shaped plate structure adapted to the outer cylindrical surface of the blast furnace direct-fired pipe 300, and the bottom is provided with a columnar sleeve (second annular part 31). The columnar sleeve is adapted to the piston 42 of the hydraulic lifting device, and bolts for fixing the piston 42 are provided on the columnar sleeve. The arc-shaped plate structure of the support plate 3 is consistent with the curvature of the outer cylindrical surface of the blast furnace direct-fired pipe 300, and anti-slip pads are provided to achieve stable support and precise pushing of the direct-fired pipe 300.

[0084] The strong magnetic attractor is a permanent magnet or an electromagnet, which enables the rapid installation and removal of the base 1 through magnetic attraction.

[0085] The blast furnace air supply system includes the following steps during use: When air leakage occurs at the end of the blast furnace direct-blowing pipe 300 due to improper installation, four sets of the aforementioned devices are symmetrically placed inside the tuyeres sleeve 201 and fixed by the strong magnet of the base 1. By operating the separate hydraulic lifting device, the stroke of the piston 42 of each telescopic mechanism 4 is adjusted so that the support plate 3 of each support device 100 pushes the end of the blast furnace direct-blowing pipe 300, and the adjustment is continued until the end of the blast furnace direct-blowing pipe 300 is in close contact with the tuyeres sleeve 203, eliminating the air leakage gap.

[0086] During assembly, the four sets of support devices 100 can be symmetrically distributed around the circumference of the tuyeres sleeve 201 to ensure symmetrical support and balanced pushing of the blast furnace direct-fired pipe 300. In use, the tightness of contact between the blast furnace direct-fired pipe 300 and the tuyeres sleeve 203 can be determined by observing the leakage at the air outlet or by monitoring with a pressure detection device, thereby determining whether the adjustment is in place.

[0087] Through the above embodiments, this application has the following beneficial effects or advantages:

[0088] The blast furnace blast system of this application eliminates the need for shutdown and can be adjusted online, shortening maintenance time and improving production efficiency. Furthermore, the hydraulic telescopic mechanism enables precise adjustment, with the arc shapes of the base and support plate respectively conforming to the tuyeres sleeve and the direct-blowing pipe, resulting in high adjustment accuracy. The magnetic base is safe and convenient, and allows for the detachable and reusable support device.

[0089] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0090] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A blast furnace direct-blowing pipe support device, characterized in that, include: The base has a first annular portion on its inner side and a first mating surface on its outer side, the first mating surface being used to fit and mate with the inner wall surface of the air vent sleeve. A magnetic body is disposed on the base, and the magnetic body is used to magnetically fix the base to the air vent sleeve; The tray has a second annular portion on its outer side and a second mating surface on its inner side, the second mating surface being used to fit and mate with the outer wall surface of the straight blowing pipe; A telescopic mechanism is provided, wherein the telescopic mechanism is telescopic, the outer end of the telescopic mechanism is fixed inside the first annular portion, and the inner end of the telescopic mechanism is fixed inside the second annular portion.

2. The blast furnace direct-blowing pipe support device according to claim 1, characterized in that, Includes a first fastener, which extends radially along the first annular portion and passes through the annular wall of the first annular portion, and the first fastener is used to detachably connect to or abut against the end of the telescopic mechanism toward the telescopic mechanism.

3. The blast furnace direct-blowing pipe support device according to claim 2, characterized in that, There are multiple first fasteners, which are arranged at circumferential intervals along the first annular portion, and each first fastener is detachably connected to or abuts the telescopic mechanism.

4. The blast furnace direct-blowing pipe support device according to claim 1, characterized in that, Includes a second fastener, which extends radially along the second annular portion and passes through the annular wall of the second annular portion, and the second fastener is used to detachably connect to or abut against the end of the telescopic mechanism toward the telescopic mechanism.

5. The blast furnace direct-blowing pipe support device according to claim 4, characterized in that, There are multiple second fasteners, which are arranged at circumferential intervals along the second annular portion, and each second fastener is detachably connected to or abuts the telescopic mechanism.

6. The blast furnace direct-blowing pipe support device according to claim 1, characterized in that, The first mating surface is an arc-shaped surface, and the curvature of the first mating surface is consistent with the curvature of the inner peripheral wall of the air vent sleeve; And / or, the second mating surface is an arc-shaped surface, and the curvature of the second mating surface is consistent with the curvature of the outer peripheral wall of the straight blowing pipe.

7. The blast furnace direct-blowing pipe support device according to claim 1, characterized in that, The telescopic mechanism includes: The cylinder body, the outer end of which is fixed inside the first annular portion; A piston, which is slidably assembled into the cylinder body, with its inner end fixed within the second annular portion; A hydraulic pump and a hydraulic pipe are provided, one end of which is connected to the cylinder body and the other end of which is connected to the hydraulic pump. The hydraulic pump is used to deliver hydraulic fluid into the cylinder body through the hydraulic pipe to achieve sliding drive of the piston.

8. The blast furnace direct-blowing pipe support device according to claim 1, characterized in that, The magnetic body is a permanent magnet or an electromagnet; And / or, there are multiple magnetic bodies, and the base includes an annular edge protruding from the outer periphery of the first annular portion, and the multiple magnetic bodies are disposed on the annular edge and located outside the annular edge; And / or, the base is provided with a mounting groove, the magnet is fixed in the mounting groove, and the surface of the magnet is flush with the first mating surface.

9. The blast furnace direct-blowing tube support device according to any one of claims 1-8, characterized in that, The second mating surface of the tray is provided with an anti-slip pad; And / or, along the extension direction of the straight blow tube, the width dimension of the tray is smaller than the width dimension of the base.

10. A blast furnace air supply system, characterized in that, The blast furnace includes a direct-blowing pipe, a tuyere sleeve, and a blast furnace direct-blowing pipe support device as described in any one of claims 1-9. The tuyere sleeve is fitted onto the outer periphery of the direct-blowing pipe. There are multiple blast furnace direct-blowing pipe support devices, each of which is supported between the direct-blowing pipe and the tuyere sleeve and arranged at intervals along the circumference of the direct-blowing pipe.

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