Blast furnace cast iron cooling wall for strengthening end cooling

Abstract

The utility model discloses a blast furnace cast iron cooling wall for strengthening end cooling, which belongs to the technical field of blast furnace cooling devices and comprises a cooling water pipe I for cooling a cast iron cooling wall main body, and the cooling water pipe I is arranged in the cast iron cooling wall and is positioned at a position close to the middle of the cast iron cooling wall; first bent pipes are arranged at the two ends of the first cooling water pipe and extend out of the cast iron cooling wall, and a cooling mechanism is arranged on the cast iron cooling wall and comprises a second cooling water pipe arranged on the upper portion of the cast iron cooling wall and a third cooling water pipe arranged on the lower portion of the cast iron cooling wall; the two ends of the second cooling water pipe and the two ends of the third cooling water pipe are each provided with a second bent pipe, the second cooling water pipe is located in the cast iron cooling wall, the third cooling water pipe is located in the cast iron cooling wall, and the second bent pipes extend out of the cast iron cooling wall. The cooling effect of the end part of the cast iron cooling wall is improved, so that the service life of the cast iron cooling wall is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace cooling devices, in particular to a blast furnace cast iron cooling stave for strengthening end cooling. Background Technique

[0002] Production practice has proved that the safety and stability of cast iron cooling staves in blast furnace production are not only the prerequisite for high output and low consumption of blast furnaces, but also the necessary condition for extending the furnace body life. At the present stage, the structural improvement of cast iron cooling staves mainly relies on increasing the number of hot surface water pipes or increasing the pipe diameter to improve the cooling efficiency. The main cooling part is at the middle position of the main body of the cast iron cooling stave. In actual production, because the cast iron cooling stave is in the soft melting zone of the blast furnace, the solid-liquid change is frequent, the temperature fluctuates greatly, the slag skin is not easy to adhere, and along with the erosion of the high-temperature coal gas flow, it is extremely easy to be damaged. Especially at the end position of the cast iron cooling stave, it is damaged first due to insufficient cooling efficiency, which affects the service life of the cast iron cooling stave and then affects the production efficiency of the blast furnace.

[0003] In view of the above related technologies, it is urgent to design and develop a blast furnace cast iron cooling stave for strengthening end cooling to improve the cooling effect of the end of the cast iron cooling stave, thereby improving the service life of the cast iron cooling stave. Summary of the Utility Model

[0004] In order to improve the cooling effect of the end of the cast iron cooling stave, the present application provides a blast furnace cast iron cooling stave for strengthening end cooling.

[0005] The blast furnace cast iron cooling stave for strengthening end cooling provided by the present application adopts the following technical solutions:

[0006] A blast furnace cast iron cooling stave for strengthening end cooling includes a first cooling water pipe for cooling the main body of the cast iron cooling stave. The first cooling water pipe is arranged inside the cast iron cooling stave and is located at a position close to the middle of the cast iron cooling stave. Both ends of the first cooling water pipe are provided with first elbows, and both of the first elbows extend out of the cast iron cooling stave. A cooling mechanism is arranged on the cast iron cooling stave. The cooling mechanism includes a second cooling water pipe arranged at the upper part of the cast iron cooling stave and a third cooling water pipe arranged at the lower part of the cast iron cooling stave. Both ends of the second cooling water pipe and the third cooling water pipe are provided with second elbows. The second cooling water pipe is located inside the cast iron cooling stave, the third cooling water pipe is located inside the cast iron cooling stave, and the second elbows extend out of the cast iron cooling stave.

[0007] By adopting the above technical solution, the first cooling water pipe is arranged inside the cast iron cooling stave. The first cooling water pipe is located at a position close to the middle of the cast iron cooling stave. Elbows are arranged at both ends of the first cooling water pipe, and both elbows extend out of the cast iron cooling stave. The second cooling water pipe is arranged at the upper part of the cast iron cooling stave and is located inside the cast iron cooling stave. The third cooling water pipe is arranged at the lower part of the cast iron cooling stave and is located inside the cast iron cooling stave. Elbows are arranged at both ends of the second cooling water pipe and the third cooling water pipe, and the elbows extend out of the cast iron cooling stave. The first cooling water pipe facilitates cooling the middle position of the cast iron cooling stave. The second cooling water pipe and the third cooling water pipe facilitate cooling the upper and lower positions of the cast iron cooling stave, improving the cooling effect at the ends of the cast iron cooling stave, and thus extending the service life of the cast iron cooling stave.

[0008] Preferably, the cooling mechanism includes a fourth cooling water pipe arranged at the left part of the cast iron cooling stave and a fifth cooling water pipe arranged at the right part of the cast iron cooling stave. Elbows are arranged at both ends of the fourth cooling water pipe and the fifth cooling water pipe. The fourth cooling water pipe is located inside the cast iron cooling stave, and the fifth cooling water pipe is located inside the cast iron cooling stave. The elbows extend out of the cast iron cooling stave.

[0009] By adopting the above technical solution, the fourth cooling water pipe is arranged at the left part of the cast iron cooling stave and is located inside the cast iron cooling stave. The fifth cooling water pipe is arranged at the right part of the cast iron cooling stave and is located inside the cast iron cooling stave. Elbows are arranged at both ends of the fourth cooling water pipe and the fifth cooling water pipe, and the elbows extend out of the cast iron cooling stave. The fourth cooling water pipe and the fifth cooling water pipe facilitate cooling the left and right positions of the cast iron cooling stave, further improving the cooling effect at the ends of the cast iron cooling stave, and thus extending the service life of the cast iron cooling stave.

[0010] Preferably, a protection mechanism is arranged on the cast iron cooling stave. The protection mechanism includes a first horseshoe-shaped sleeve arranged inside the cast iron cooling stave, a second horseshoe-shaped sleeve arranged inside the cast iron cooling stave, and a third horseshoe-shaped sleeve arranged inside the cast iron cooling stave. The first elbow is arranged inside the cast iron cooling stave and is sleeved inside the first horseshoe-shaped sleeve. The second elbow is arranged inside the cast iron cooling stave and is sleeved inside the second horseshoe-shaped sleeve. The third elbow is arranged inside the cast iron cooling stave and is sleeved inside the third horseshoe-shaped sleeve.

[0011] By adopting the above technical solution, the U-shaped casing one is arranged inside the cast iron cooling stave, the elbow one is arranged inside the cast iron cooling stave, the elbow one is sleeved inside the U-shaped casing one, the U-shaped casing two is arranged inside the cast iron cooling stave, the elbow two is arranged inside the cast iron cooling stave, the elbow two is sleeved inside the U-shaped casing two, the U-shaped casing three is arranged inside the cast iron cooling stave, the elbow three is arranged inside the cast iron cooling stave, and the elbow three is sleeved inside the U-shaped casing three. During the working process of the cast iron cooling stave, since the cast iron cooling stave is installed on the furnace shell, the cast iron cooling stave is prone to thermal deformation. By arranging the U-shaped casing one inside the cast iron cooling stave, arranging the U-shaped casing two inside the cast iron cooling stave, and arranging the U-shaped casing three inside the cast iron cooling stave, the U-shaped casing one, the U-shaped casing two and the U-shaped casing three can prevent the shear stress of the furnace shell from causing fracture damage to the cooling water pipes one, two, three, four and five during the deformation process of the cast iron cooling.

[0012] Preferably, the protection mechanism includes an installation ring one sleeved on the elbow one, an installation ring two sleeved on the elbow two, and an installation ring three sleeved on the elbow three. The inner wall of the installation ring one is in close contact with the side surface of the elbow one, the outer wall of the installation ring one is in close contact with the inner wall of the U-shaped casing one, the inner wall of the installation ring two is in close contact with the side surface of the elbow two, the outer wall of the installation ring two is in close contact with the inner wall of the U-shaped casing two, the inner wall of the installation ring three is in close contact with the side surface of the elbow three, and the outer wall of the installation ring three is in close contact with the inner wall of the U-shaped casing three.

[0013] By adopting the above technical solution, the installation ring one is sleeved on the elbow one, the inner wall of the installation ring one is in close contact with the side surface of the elbow one, the outer wall of the installation ring one is in close contact with the inner wall of the U-shaped casing one, the installation ring two is sleeved on the elbow two, the inner wall of the installation ring two is in close contact with the side surface of the elbow two, the outer wall of the installation ring two is in close contact with the inner wall of the U-shaped casing two, the installation ring three is sleeved on the elbow three, the inner wall of the installation ring three is in close contact with the side surface of the elbow three, and the outer wall of the installation ring three is in close contact with the inner wall of the U-shaped casing three. This improves the clamping stability between the elbow one and the U-shaped casing one, the elbow two and the U-shaped casing two, and the elbow three and the U-shaped casing three, and maintains the stability of the distance between the elbow one and the U-shaped casing one, the stability of the distance between the elbow two and the U-shaped casing two, and the stability of the distance between the elbow three and the U-shaped casing three.

[0014] Preferably, the protection mechanism includes an asbestos rope I sleeved on the first elbow pipe, an asbestos rope II sleeved on the second elbow pipe, and an asbestos rope III sleeved on the third elbow pipe. The asbestos rope I is in close contact with the first elbow pipe and the first U-shaped sleeve. The asbestos rope II is in close contact with the second elbow pipe and the second U-shaped sleeve. The asbestos rope III is in close contact with the third elbow pipe and the third U-shaped sleeve.

[0015] By adopting the above technical solution, the asbestos rope I is sleeved on the first elbow pipe and in close contact with the first elbow pipe and the first U-shaped sleeve. The asbestos rope II is sleeved on the second elbow pipe and in close contact with the second elbow pipe and the second U-shaped sleeve. The asbestos rope III is sleeved on the third elbow pipe and in close contact with the third elbow pipe and the third U-shaped sleeve, protecting the positions of the first, second, and third U-shaped sleeves close to the first, second, and third elbow pipes respectively from excessive iron drilling.

[0016] Preferably, anti-carburizing coatings are applied to the outer sides of the first cooling water pipe, the second cooling water pipe, the third cooling water pipe, the fourth cooling water pipe, the fifth cooling water pipe, the first elbow pipe, the second elbow pipe, and the third elbow pipe.

[0017] By adopting the above technical solution, anti-carburizing coatings are applied to the outer sides of the first cooling water pipe, the second cooling water pipe, the third cooling water pipe, the fourth cooling water pipe, the fifth cooling water pipe, the first elbow pipe, the second elbow pipe, and the third elbow pipe, preventing oxidation and decarburization caused by direct contact between high-temperature molten iron and the water pipes during the production of cast iron cooling walls.

[0018] Preferably, the materials of the first cooling water pipe, the second cooling water pipe, the third cooling water pipe, the fourth cooling water pipe, the fifth cooling water pipe, the first elbow pipe, the second elbow pipe, and the third elbow pipe are all 10 or 20 seamless steel pipes.

[0019] By adopting the above technical solution, the materials of the first cooling water pipe, the second cooling water pipe, the third cooling water pipe, the fourth cooling water pipe, the fifth cooling water pipe, the first elbow pipe, the second elbow pipe, and the third elbow pipe are all 10 or 20 seamless steel pipes. The 10 or 20 seamless steel pipes have high formability, facilitating the better production of cast iron cooling walls.

[0020] Preferably, the material of the cast iron cooling wall is ductile iron.

[0021] By adopting the above technical solution, the material of the cast iron cooling wall is ductile iron, improving the wear resistance and toughness of the cast iron cooling wall.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The first cooling water pipe is arranged inside the cast iron cooling stave. The first cooling water pipe is located at a position close to the middle of the cast iron cooling stave. Elbow pipes are arranged at both ends of the first cooling water pipe, and both elbow pipes extend out of the cast iron cooling stave. The second cooling water pipe is arranged in the upper part of the cast iron cooling stave, and the second cooling water pipe is located inside the cast iron cooling stave. The third cooling water pipe is arranged in the lower part of the cast iron cooling stave, and the third cooling water pipe is located inside the cast iron cooling stave. Elbow pipes are arranged at both ends of the second cooling water pipe and the third cooling water pipe, and the elbow pipes extend out of the cast iron cooling stave. The first cooling water pipe facilitates cooling the middle position of the cast iron cooling stave, and the second cooling water pipe and the third cooling water pipe facilitate cooling the upper and lower positions of the cast iron cooling stave, improving the cooling effect at the end of the cast iron cooling stave, thereby increasing the service life of the cast iron cooling stave;

[0024] 2. The fourth cooling water pipe is arranged in the left part of the cast iron cooling stave, and the fourth cooling water pipe is located inside the cast iron cooling stave. The fifth cooling water pipe is arranged in the right part of the cast iron cooling stave, and the fifth cooling water pipe is located inside the cast iron cooling stave. Elbow pipes are arranged at both ends of the fourth cooling water pipe and the fifth cooling water pipe, and the elbow pipes extend out of the cast iron cooling stave. The fourth cooling water pipe and the fifth cooling water pipe facilitate cooling the left and right positions of the cast iron cooling stave, further improving the cooling effect at the end of the cast iron cooling stave, thereby increasing the service life of the cast iron cooling stave;

[0025] 3. The first U-shaped sleeve is arranged inside the cast iron cooling stave. The elbow pipe is arranged inside the cast iron cooling stave, and the elbow pipe is sleeved inside the first U-shaped sleeve. The second U-shaped sleeve is arranged inside the cast iron cooling stave. The elbow pipe is arranged inside the cast iron cooling stave, and the elbow pipe is sleeved inside the second U-shaped sleeve. The third U-shaped sleeve is arranged inside the cast iron cooling stave. The elbow pipe is arranged inside the cast iron cooling stave, and the elbow pipe is sleeved inside the third U-shaped sleeve. During the working process of the cast iron cooling stave, since the cast iron cooling stave is installed on the furnace shell, the cast iron cooling stave is prone to thermal deformation. By arranging the first U-shaped sleeve inside the cast iron cooling stave, arranging the second U-shaped sleeve inside the cast iron cooling stave, and arranging the third U-shaped sleeve inside the cast iron cooling stave, the first U-shaped sleeve, the second U-shaped sleeve, and the third U-shaped sleeve can prevent the shear stress of the furnace shell from causing fracture damage to the first cooling water pipe, the second cooling water pipe, the third cooling water pipe, the fourth cooling water pipe, and the fifth cooling water pipe during the deformation process of the cast iron cooling stave. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the blast furnace cast iron cooling stave in the embodiment of the present application.

[0027] Figure 2 is a schematic diagram of the connection structure of the cooling mechanism in the embodiment of the present application.

[0028] Figure 3It is a cross-sectional view of the first horseshoe-shaped casing in the embodiment of the present application.

[0029] Figure 4 It is a cross-sectional view of the cast iron cooling stave in the embodiment of the present application.

[0030] Figure 5 It is a schematic structural view of the cast iron cooling stave in the embodiment of the present application.

[0031] Explanation of reference numerals:

[0032] 1, cast iron cooling stave; 14, dovetail groove; 15, mounting hole; 16, bolt boss; 161, through hole; 2, first cooling water pipe; 21, first elbow pipe; 3, cooling mechanism; 31, second cooling water pipe; 32, third cooling water pipe; 33, fourth cooling water pipe; 34, fifth cooling water pipe; 35, second elbow pipe; 36, third elbow pipe; 4, protection mechanism; 41, first horseshoe-shaped casing; 42, second horseshoe-shaped casing; 43, third horseshoe-shaped casing; 44, first mounting ring; 45, second mounting ring; 46, third mounting ring; 47, first asbestos rope; 48, second asbestos rope; 49, third asbestos rope. Detailed implementation manners

[0033] The following further elaborates on the present application in conjunction with the attached Figures 1-5 for a more detailed description.

[0034] The embodiment of the present application discloses a blast furnace cast iron cooling stave for enhancing end cooling. Referring to Figure 1 and Figure 2 as shown, the blast furnace cast iron cooling stave 1 includes a cast iron cooling stave 1, a first cooling water pipe 2, a cooling mechanism 3, and a protection mechanism 4. The cast iron cooling stave 1 is horizontally arranged, and the length direction of the cast iron cooling stave 1 is perpendicular to the ground.

[0035] Referring to Figure 1 and Figure 2 as shown, there are two first cooling water pipes 2, and both of the two first cooling water pipes 2 are arranged inside the cast iron cooling stave 1. The two first cooling water pipes 2 are symmetrical with respect to the center line in the width direction of the side surface of the cast iron cooling stave 1, and the length direction of the first cooling water pipe 2 is the same as the length direction of the cast iron cooling stave 1.

[0036] Referring to Figure 1 and Figure 2 as shown, both ends of the two first cooling water pipes 2 are provided with first elbow pipes 21, and all four first elbow pipes 21 are arranged inside the cast iron cooling stave 1, and the first elbow pipes 21 extend out of the cast iron cooling stave 1.

[0037] Referring to Figure 1 and Figure 2As shown, the cooling mechanism 3 includes a second cooling water pipe 31, a third cooling water pipe 32, a fourth cooling water pipe 33, a fifth cooling water pipe 34, a second elbow pipe 35 and a third elbow pipe 36. The second cooling water pipe 31 is arranged at the upper part of the cast iron cooling stave 1, the second cooling water pipe 31 is located inside the cast iron cooling stave 1, and the length direction of the second cooling water pipe 31 is the same as the width direction of the cast iron cooling stave 1.

[0038] Refer to Figure 1 and Figure 2 As shown, the third cooling water pipe 32 is arranged at the lower part of the cast iron cooling stave 1, the third cooling water pipe 32 is located inside the cast iron cooling stave 1, the length direction of the third cooling water pipe 32 is the same as the length direction of the second cooling water pipe 31, and the second cooling water pipe 31 and the third cooling water pipe 32 are symmetric with respect to the center line in the length direction of the side surface of the cast iron cooling stave 1.

[0039] Refer to Figure 1 and Figure 2 As shown, the second elbow pipe 35 is arranged at both ends of the second cooling water pipe 31 and the third cooling water pipe 32. All four second elbow pipes 35 are arranged inside the cast iron cooling stave 1, and the second elbow pipe 35 extends out of the cast iron cooling stave 1. The second cooling water pipe 31 and the third cooling water pipe 32 are convenient for cooling the upper and lower positions of the cast iron cooling stave 1, improving the cooling effect at the end of the cast iron cooling stave 1, and thus improving the service life of the cast iron cooling stave 1.

[0040] Refer to Figure 1 and Figure 2 As shown, the fourth cooling water pipe 33 is arranged at the left part of the cast iron cooling stave 1, the fourth cooling water pipe 33 is located inside the cast iron cooling stave 1, the fifth cooling water pipe 34 is arranged at the right part of the cast iron cooling stave 1, the fifth cooling water pipe 34 is located inside the cast iron cooling stave 1, the fourth cooling water pipe 33 and the fifth cooling water pipe 34 are symmetric with respect to the center line in the width direction of the side surface of the cast iron cooling stave 1, the length direction of the fourth cooling water pipe 33 is the same as the length direction of the cast iron cooling stave 1, and the length direction of the fifth cooling water pipe 34 is the same as the length direction of the fourth cooling water pipe 33.

[0041] Refer to Figure 1 and Figure 2 As shown, the third elbow pipe 36 is arranged at both ends of the fourth cooling water pipe 33 and the fifth cooling water pipe 34. All four third elbow pipes 36 are arranged inside the cast iron cooling stave 1, and the third elbow pipe 36 extends out of the cast iron cooling stave 1. The fourth cooling water pipe 33 and the fifth cooling water pipe 34 are convenient for cooling the left and right positions of the cast iron cooling stave 1, further improving the cooling effect at the end of the cast iron cooling stave 1, and thus improving the service life of the cast iron cooling stave 1.

[0042] Refer to Figure 1 and Figure 2As shown, anti-carburizing coatings are applied to the outer sides of the first cooling water pipe 2, the second cooling water pipe 31, the third cooling water pipe 32, the fourth cooling water pipe 33, the fifth cooling water pipe 34, the first elbow pipe 21, the second elbow pipe 35, and the third elbow pipe 36 to prevent oxidation and decarburization caused by direct contact between high-temperature molten iron and the water pipes during the production of the cast iron cooling stave 1.

[0043] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, there are four groups of protection mechanisms 4. The protection mechanism 4 includes the first U-shaped sleeve 41, the second U-shaped sleeve 42, the third U-shaped sleeve 43, the first mounting ring 44, the second mounting ring 45, the third mounting ring 46, the first asbestos rope 47, the second asbestos rope 48, and the third asbestos rope 49. The four first U-shaped sleeves 41 are all arranged inside the cast iron cooling stave 1.

[0044] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, the four first U-shaped sleeves 41 correspond to the four first elbow pipes 21 one by one. The first elbow pipe 21 is sleeved inside the first U-shaped sleeve 41. The four first mounting rings 44 correspond to the four first elbow pipes 21 one by one. The first mounting ring 44 is sleeved on the first elbow pipe 21. The inner wall of the first mounting ring 44 is in close contact with the side surface of the first elbow pipe 21, and the outer wall of the first mounting ring 44 is in close contact with the inner wall of the first U-shaped sleeve 41, improving the clamping stability between the first elbow pipe 21 and the first U-shaped sleeve 41 and maintaining the stability of the distance between the first elbow pipe 21 and the first U-shaped sleeve 41.

[0045] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, the four first asbestos ropes 47 correspond to the four first elbow pipes 21 one by one. The first asbestos rope 47 is sleeved on the first elbow pipe 21. The first asbestos rope 47 is in close contact with the first elbow pipe 21 and the first U-shaped sleeve 41, protecting the position of the first U-shaped sleeve 41 close to the first elbow pipe 21 from excessive iron drilling.

[0046] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, the four second U-shaped sleeves 42 are all arranged inside the cast iron cooling stave 1. The four second U-shaped sleeves 42 correspond to the four second elbow pipes 35 one by one. The second elbow pipe 35 is sleeved inside the second U-shaped sleeve 42.

[0047] Refer to Figure 2 、 Figure 3 and Figure 4As shown, the four mounting rings II 45 correspond one-to-one with the four elbow pipes II 35. The mounting rings II 45 are sleeved on the elbow pipes II 35. The inner wall of the mounting rings II 45 is in close contact with the side surface of the elbow pipes II 35, and the outer wall of the mounting rings II 45 is in close contact with the inner wall of the U-shaped sleeves II 42, improving the clamping stability between the elbow pipes II 35 and the U-shaped sleeves II 42 and maintaining the stability of the distance between the elbow pipes II 35 and the U-shaped sleeves II 42.

[0048] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, the four asbestos ropes II 48 correspond one-to-one with the four elbow pipes II 35. The asbestos ropes II 48 are sleeved on the elbow pipes II 35. The asbestos ropes II 48 are in close contact with the elbow pipes II 35 and the asbestos ropes II 48 are in close contact with the U-shaped sleeves II 42, protecting the position of the U-shaped sleeves II 42 close to the elbow pipes II 35 from excessive iron drilling.

[0049] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, the four U-shaped sleeves III 43 are all arranged in the cast iron cooling stave 1. The four U-shaped sleeves III 43 correspond one-to-one with the four elbow pipes III 36. The elbow pipes III 36 are sleeved in the U-shaped sleeves III 43. The four U-shaped sleeves III 43 correspond one-to-one with the four U-shaped sleeves II 42, and the U-shaped sleeves III 43 are welded to the U-shaped sleeves II 42.

[0050] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, the four mounting rings III 46 correspond one-to-one with the four elbow pipes III 36. The mounting rings III 46 are sleeved on the elbow pipes III 36. The inner wall of the mounting rings III 46 is in close contact with the side surface of the elbow pipes III 36, and the outer wall of the mounting rings III 46 is in close contact with the inner wall of the U-shaped sleeves III 43, improving the clamping stability between the elbow pipes III 36 and the U-shaped sleeves III 43 and maintaining the stability of the distance between the elbow pipes III 36 and the U-shaped sleeves III 43.

[0051] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, the four asbestos ropes III 49 correspond one-to-one with the four elbow pipes III 36. The asbestos ropes III 49 are sleeved on the elbow pipes III 36. The asbestos ropes III 49 are in close contact with the elbow pipes III 36 and the asbestos ropes III 49 are in close contact with the U-shaped sleeves III 43, protecting the position of the U-shaped sleeves III 43 close to the elbow pipes III 36 from excessive iron drilling.

[0052] Refer to Figure 1 and Figure 2As shown, the materials used for the first cooling water pipe 2, the second cooling water pipe 31, the third cooling water pipe 32, the fourth cooling water pipe 33, the fifth cooling water pipe 34, the first elbow 21, the second elbow 35, and the third elbow 36 are all seamless steel pipes of 10 or 20. The seamless steel pipes of 10 or 20 have high formability and plasticity, which is convenient for better production of cast iron cooling stave.

[0053] Refer to Figure 1 As shown, the material used for the cast iron cooling stave 1 is ductile iron, which improves the wear resistance and toughness of the cast iron cooling stave.

[0054] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, during the pouring process of the cast iron cooling stave 1, the first cooling water pipe 2, the second cooling water pipe 31, the third cooling water pipe 32, the fourth cooling water pipe 33, the fifth cooling water pipe 34, the first elbow 21, the second elbow 35, the third elbow 36, the first horseshoe-shaped sleeve 41, the second horseshoe-shaped sleeve 42, the third horseshoe-shaped sleeve 43, the first mounting ring 44, the second mounting ring 45, the third mounting ring 46, the first asbestos rope 47, the second asbestos rope 48, and the third asbestos rope 49 are placed in the mold at appropriate positions and fixed with tools, and then ductile iron is poured into the mold to form the cast iron cooling stave 1.

[0055] Refer to Figure 5 As shown, there are slots in the mold, so that dovetail grooves 14 are formed on the side surface of the cast iron cooling stave 1 after pouring. The length direction of the dovetail grooves 14 is the same as the width direction of the cast iron cooling stave 1. The dovetail grooves 14 are connected to the side surface of the cast iron cooling stave 1. There are 10 dovetail grooves 14, and the 10 dovetail grooves 14 are evenly distributed at equal intervals along the length direction of the side surface of the cast iron cooling stave 1. During the brick lining and use of the cast iron cooling stave 1, it is convenient to adhere to slag to form a slag skin.

[0056] Refer to Figure 1 and Figure 5 As shown, there are struts in the mold, so that mounting holes 15 are formed on the side surface of the cast iron cooling stave 1 after pouring. There are four mounting holes 15, and the four mounting holes 15 are located at the middle position of the cast iron cooling stave 1. The four mounting holes 15 are arranged in a matrix on the side surface of the cast iron cooling stave 1. There are four bolt bosses 16 integrally cast on the cast iron cooling stave 1. The four bolt bosses 16 correspond to the four struts one by one. Through holes 161 are formed on the top surface of the bolt bosses 16. The through holes 161 are connected to the mounting holes 15. The axial direction of the through holes 161 coincides with the axial direction of the mounting holes 15, which is convenient for the later installation of the cast iron cooling stave 1.

[0057] The implementation principle of a blast furnace cast iron cooling stave 1 with enhanced end cooling in the embodiment of the present application is:

[0058] During the casting process of the cast iron cooling stave 1, the cooling water pipe 1-2, the cooling water pipe 2-31, the cooling water pipe 3-32, the cooling water pipe 4-33, the cooling water pipe 5-34, the elbow pipe 1-21, the elbow pipe 2-35, the elbow pipe 3-36, the U-shaped casing 1-41, the U-shaped casing 2-42, the U-shaped casing 3-43, the mounting ring 1-44, the mounting ring 2-45, the mounting ring 3-46, the asbestos rope 1-47, the asbestos rope 2-48, and the asbestos rope 3-49 are placed in the mold at appropriate positions and fixed with tools. Then, ductile iron is poured into the mold to form the cast iron cooling stave 1, such that the cooling water pipe 2-31 is arranged at the upper part of the cast iron cooling stave 1 and is located inside the cast iron cooling stave 1, the cooling water pipe 3-32 is arranged at the lower part of the cast iron cooling stave 1 and is located inside the cast iron cooling stave 1. The cooling water pipe 2-31 and the cooling water pipe 3-32 facilitate the cooling of the upper and lower positions of the cast iron cooling stave 1. The cooling water pipe 4-33 is arranged at the left part of the cast iron cooling stave 1 and is located inside the cast iron cooling stave 1, the cooling water pipe 5-34 is arranged at the right part of the cast iron cooling stave 1 and is located inside the cast iron cooling stave 1. The cooling water pipe 4-33 and the cooling water pipe 5-34 facilitate the cooling of the left and right positions of the cast iron cooling stave 1, improving the cooling effect at the end of the cast iron cooling stave 1, and thus increasing the service life of the cast iron cooling stave 1.

[0059] The above are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A blast furnace cast iron cooling stave with enhanced end cooling, comprising a cooling water pipe (2) for cooling the main body of the cast iron cooling stave (1), characterized in that: The cooling water pipe 1 (2) is arranged in the cast iron cooling stave (1), the cooling water pipe 1 (2) is located near the middle of the cast iron cooling stave (1), the two ends of the cooling water pipe 1 (2) are provided with bent pipes 1 (21), both of the two bent pipes 1 (21) extend out of the cast iron cooling stave (1), the cast iron cooling stave (1) is provided with a cooling mechanism (3), the cooling mechanism (3) comprises a cooling water pipe 2 (31) arranged at the upper part of the cast iron cooling stave (1) and a cooling water pipe 3 (32) arranged at the lower part of the cast iron cooling stave (1), both ends of the cooling water pipe 2 (31) and the cooling water pipe 3 (32) are provided with bent pipes 2 (35), the cooling water pipe 2 (31) is located inside the cast iron cooling stave (1), the cooling water pipe 3 (32) is located inside the cast iron cooling stave (1), and the bent pipe 2 (35) extends out of the cast iron cooling stave (1).

2. A blast furnace cast iron cooling stave with enhanced end cooling according to claim 1, characterized in that: The cooling mechanism (3) comprises a cooling water pipe four (33) arranged on the left part of the cast iron cooling wall (1) and a cooling water pipe five (34) arranged on the right part of the cast iron cooling wall (1), and both ends of the cooling water pipe four (33) and the cooling water pipe five (34) are provided with a bent pipe three (36), the cooling water pipe four (33) is located inside the cast iron cooling wall (1), the cooling water pipe five (34) is located inside the cast iron cooling wall (1), and the bent pipe three (36) extends out of the cast iron cooling wall (1).

3. A blast furnace cast iron cooling stave with enhanced end cooling according to claim 2, characterized in that: The cast iron cooling stave (1) is provided with a protection mechanism (4), the protection mechanism (4) comprising a horseshoe-shaped sleeve one (41) provided in the cast iron cooling stave (1), a horseshoe-shaped sleeve two (42) provided in the cast iron cooling stave (1) and a horseshoe-shaped sleeve three (43) provided in the cast iron cooling stave (1), the bend pipe one (21) is provided in the cast iron cooling stave (1), the bend pipe one (21) is sleeved in the horseshoe-shaped sleeve one (41), the bend pipe two (35) is provided in the cast iron cooling stave (1), the bend pipe two (35) is sleeved in the horseshoe-shaped sleeve two (42), the bend pipe three (36) is provided in the cast iron cooling stave (1), and the bend pipe three (36) is sleeved in the horseshoe-shaped sleeve three (43).

4. A blast furnace cast iron cooling stave with enhanced end cooling according to claim 3, characterized in that: The protection mechanism (4) comprises a mounting ring (44) sleeved on the curved pipe (21), a mounting ring (45) sleeved on the curved pipe (35), and a mounting ring (46) sleeved on the curved pipe (36); the inner wall of the mounting ring (44) is in close contact with the side surface of the curved pipe (21); the outer wall of the mounting ring (44) is in close contact with the inner wall of the horseshoe-shaped sleeve (41); the inner wall of the mounting ring (45) is in close contact with the side surface of the curved pipe (35); the outer wall of the mounting ring (45) is in close contact with the inner wall of the horseshoe-shaped sleeve (42); the inner wall of the mounting ring (46) is in close contact with the side surface of the curved pipe (36); and the outer wall of the mounting ring (46) is in close contact with the inner wall of the horseshoe-shaped sleeve (43).

5. The blast furnace cast iron cooling stave with enhanced end cooling according to claim 3, characterized in that: The protection mechanism (4) comprises an asbestos rope 1 (47) sleeved on the bent pipe 1 (21), an asbestos rope 2 (48) sleeved on the bent pipe 2 (35), and an asbestos rope 3 (49) sleeved on the bent pipe 3 (36); the asbestos rope 1 (47) is in close contact with the bent pipe 1 (21); the asbestos rope 1 (47) is in close contact with the horseshoe-shaped sleeve 1 (41); the asbestos rope 2 (48) is in close contact with the bent pipe 2 (35); the asbestos rope 2 (48) is in close contact with the horseshoe-shaped sleeve 2 (42); the asbestos rope 3 (49) is in close contact with the bent pipe 3 (36); and the asbestos rope 3 (49) is in close contact with the horseshoe-shaped sleeve 3 (43).

6. A blast furnace cast iron cooling stave with enhanced end cooling according to claim 2, characterized in that: The outer sides of the cooling water pipe 1 (2), the cooling water pipe 2 (31), the cooling water pipe 3 (32), the cooling water pipe 4 (33), the cooling water pipe 5 (34), the elbow 1 (21), the elbow 2 (35) and the elbow 3 (36) are all coated with an anti-carburization coating.

7. A blast furnace cast iron cooling stave with enhanced end cooling according to claim 2, characterized in that: The materials used for the cooling water pipe 1 (2), the cooling water pipe 2 (31), the cooling water pipe 3 (32), the cooling water pipe 4 (33), the cooling water pipe 5 (34), the elbow 1 (21), the elbow 2 (35) and the elbow 3 (36) are all 10 or 20 seamless steel pipes.

8. The blast furnace cast iron cooling stave with enhanced end cooling according to claim 1, characterized in that: The material used for the cast iron cooling wall (1) is ductile iron.

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