Water supply and drainage device for water-cooling furnace mouth of converter

Abstract

The utility model belongs to the technical field of converter water-cooling furnace mouths, and particularly relates to a water supply and drainage device for a converter water-cooling furnace mouth. A water supply and drainage device for a water-cooling furnace mouth of a converter comprises the furnace mouth, an annular cavity is formed in the furnace mouth, a plurality of heat conduction plates are welded in the annular cavity of the furnace mouth in an array mode, two heat exchange pipes are welded to the outer wall of the furnace mouth in a penetrating mode, the water inlet ends of the two heat exchange pipes are jointly communicated with a water injection frame, and a water injection pipe is communicated with the water injection frame. The water outlet ends of the two heat exchange pipes sequentially penetrate through the heat conduction plates and the outer wall of the furnace mouth in the opposite directions, then extend to the outer side of the furnace mouth and jointly communicate with a drainage frame, the drainage frame communicates with a drainage pipe, the annular cavity of the furnace mouth communicates with an annular frame located on the outer side of the furnace mouth through a plurality of branch pipes, and a guide-out pipe is welded to the bottom end of the furnace mouth. The eduction tube is communicated with the annular cavity of the furnace mouth. Through the arrangement of the two heat exchange pipes opposite in direction and the annular frame, the heat exchange cooling efficiency and the cooling uniformity can be improved, and pressure relief can be conducted through the pressure relief assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of converter water-cooling furnace mouth, in particular to a converter water-cooling furnace mouth water supply and drainage device. Background Art

[0002] The Chinese utility model patent with the publication number CN212610755U discloses a water supply and drainage device for a water-cooled furnace mouth of a converter, including a furnace mouth, the inner cavity of the furnace mouth is provided with a coil from the outside to the inside, the outer wall of the furnace mouth is fixed with a water inlet pipe and a water outlet pipe, the inlet end of the coil is fixed inside the water inlet pipe, the outlet end of the coil is provided with a water outlet, and the water outlet is located between the water inlet pipe and the water outlet pipe, a sealing partition fixed to the inside of the furnace mouth is provided between the water outlet and the water outlet pipe, and a plurality of inner and outer partitions staggered with each other are arranged in an annular manner inside the furnace mouth, and the inner and outer partitions are respectively provided with pipe holes matching the coil, and the coil seal fits in the pipe holes. The utility model places the coil inside the cavity of the furnace mouth, which can effectively improve the refrigeration efficiency of the cooling water, and a section of folding pipe is connected to the inlet and outlet pipes respectively, which can buffer the expansion and contraction of the inlet and outlet pipes, and avoid the sealing being loose due to the expansion and contraction of the pipe fittings.

[0003] In the related art, in the cooling process of the existing converter water-cooled furnace mouth, heat exchange cooling treatment is generally carried out by means of heat exchange tubes, and the heat exchange area is increased by setting a spiral S-shaped tube or a serpentine coil. However, in the actual operation process, whether it is through the S-shaped tube or the serpentine tube when exchanging heat, when the cooling water flows from the initial end to the end end, it will exchange heat with the furnace mouth during the flow, so that the temperature difference of the cooling water at the water inlet end and the discharge end is large, thereby reducing the uniformity of the furnace mouth cooling. Summary of the invention

[0004] The utility model aims to provide a water-cooling furnace mouth water supply and drainage device for a converter to solve the problems existing in the prior art.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a water supply and drainage device for a water-cooled furnace mouth of a converter, comprising a furnace mouth, an annular cavity is opened inside the furnace mouth, a plurality of heat conduction plates are welded in an array in the annular cavity of the furnace mouth, two heat exchange tubes are penetrated and welded on the outer wall of the furnace mouth, the water inlet ends of the two heat exchange tubes are commonly connected with a water injection frame, the water injection frame is connected with a water injection pipe, the water outlet ends of the two heat exchange tubes are in opposite directions and successively penetrate a plurality of heat conduction plates and the outer wall of the furnace mouth, and then extend to the outside of the furnace mouth and are commonly connected with a drainage frame, the drainage frame is connected with a drainage pipe, the annular cavity of the furnace mouth is connected with an annular frame located outside the furnace mouth through a plurality of branch pipes, and a dewatering pipe is welded on the bottom end of the furnace mouth, and the dewatering pipe is connected with the annular cavity of the furnace mouth.

[0006] Furthermore, the annular frame is annular and hollow inside, and both sides of the annular frame are connected with water inlet pipes.

[0007] Furthermore, a drainage recess is provided on the heat conducting plate, the drainage recess faces the inner circle of the furnace opening, and there is a branch pipe between any two adjacent heat conducting plates to connect the annular cavity of the furnace opening and the inner cavity of the annular frame.

[0008] Furthermore, the water injection frame and the drainage frame are both hollow structures.

[0009] Furthermore, the drainage frame is connected to a pressure relief assembly through a pressure relief pipe. The pressure relief assembly includes a movable frame. The movable frame is a hollow structure. The inner cavity of the drainage frame is connected to the inner cavity of the movable frame through the pressure relief pipe.

[0010] Furthermore, an annular block is fixedly connected to one side of the inner wall of the movable frame, the annular block is connected to the pressure relief pipe, a movable plate is hinged on the top of the inner wall of the movable frame, a piston block is fixedly connected to one side of the movable plate, the other side of the inside of the movable frame is slidably connected to a driving plate through a column and is fixedly connected to a supporting plate, two connecting frames are hinged between the bottom of the driving plate and the other side of the movable plate, and an extrusion spring is fixedly connected between the top of the movable plate and the top of the inner wall of the movable frame.

[0011] Furthermore, the column is fixed between the top of the inner wall of the movable frame and the support plate, and the column is sequentially connected to the extrusion spring and penetrates the driving block and then passes through the gap between the two connecting frames.

[0012] Furthermore, the lower part of the piston block is cylindrical and the upper part is hemispherical. The diameter of the hemispherical upper part of the piston block is the inner diameter of the annular block. The outer diameter of the cylindrical lower part of the piston block is larger than the inner diameter of the annular block. The hemispherical upper part of the piston block is movably inserted into the annular block to enable the piston block to block the annular block.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model can increase the area of ​​heat exchange between the cooling water and the furnace mouth by setting two heat exchange tubes, thereby improving the efficiency of heat exchange and cooling, and the cooling water flow directions in the two heat exchange tubes are set in opposite directions, so as to improve the uniformity of furnace mouth cooling, and solve the problem in the prior art that when heat exchange and cooling are performed through S-shaped heat exchange tubes or serpentine coils, the initial and terminal temperatures of the cooling water differ greatly, thereby reducing the uniformity of furnace mouth cooling.

[0015] 2. The utility model can discharge the air pressure inside the drainage frame through the setting of the pressure relief component, so as to avoid the high temperature hot water inside the heat exchange tube generating water vapor after heat exchange, and the high intensity pressure causing the sealing of the heat exchange tube to decrease or damage the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of embodiment 1 of the utility model.

[0017] Figure 2 It is a rear view structural schematic diagram of the utility model.

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0019] Figure 4 It is a schematic diagram of the internal cross-sectional structure of the furnace mouth of the utility model.

[0020] Figure 5 It is a structural schematic diagram of embodiment 2 of the present utility model.

[0021] Figure 6 It is a schematic diagram of the cross-sectional structure of the pressure relief component of the utility model.

[0022] Figure 7 It is a schematic diagram of the disassembled structure of the annular block and the movable plate of the utility model.

[0023] Figure 8 It is a schematic cross-sectional structure diagram of the annular block and the movable plate of the utility model.

[0024] Among them: 1. furnace mouth; 2. heat conduction plate; 3. heat exchange tube; 4. water injection frame; 5. water injection pipe; 6. drainage frame; 7. drainage pipe; 8. ring frame; 9. water inlet pipe; 10. branch pipe; 11. outlet pipe; 12. drainage recess; 13. pressure relief assembly; 14. movable frame; 15. through pipe; 16. ring block; 17. movable plate; 18. piston block; 19. drive plate; 20. connecting frame; 21. extrusion spring; 22. pressure relief pipe; 23. column; 24. support plate. DETAILED DESCRIPTION

[0025] The utility model will now be described in further detail with reference to the accompanying drawings.

[0026] Embodiment 1:

[0027] like Figure 1-4 As shown, a water supply and drainage device for a water-cooled furnace mouth 1 of a converter comprises a furnace mouth 1, an annular cavity is opened inside the furnace mouth 1, a plurality of heat conducting plates 2 are welded in an array in the annular cavity of the furnace mouth 1, two heat exchange tubes 3 are penetrated and welded on the outer wall of the furnace mouth 1, the water inlet ends of the two heat exchange tubes 3 are commonly connected with a water injection frame 4, the water injection frame 4 is connected with a water injection pipe 5, the water outlet ends of the two heat exchange tubes 3 penetrate in opposite directions a plurality of heat conducting plates 2 and the outer wall of the furnace mouth 1 in turn, and then extend to the outside of the furnace mouth 1 and are commonly connected with a drainage frame 6, the drainage frame 6 is connected with a drainage pipe 7, the annular cavity of the furnace mouth 1 is connected with an annular frame 8 located outside the furnace mouth 1 through a plurality of branch pipes 10, and a derivation pipe 11 is welded at the bottom end of the furnace mouth 1, and the derivation pipe 11 is connected with the annular cavity of the furnace mouth 1.

[0028] By setting up two heat exchange tubes 3, the area of ​​heat exchange between the cooling water and the furnace mouth 1 can be increased, thereby improving the efficiency of heat exchange and cooling. Moreover, by setting the cooling water flow directions inside the two heat exchange tubes 3 in opposite directions, the uniformity of cooling of the furnace mouth 1 can be improved, thereby solving the problem in the prior art that when heat exchange and cooling are performed through S-shaped heat exchange tubes 3 or serpentine coils, the initial and terminal temperatures of the cooling water differ greatly, thereby reducing the uniformity of cooling of the furnace mouth 1.

[0029] The water injection frame 4 and the drainage frame 6 are both hollow structures. Through the setting of the water injection frame 4, cooling water can be injected into the two heat exchange tubes 3 at the same time, and through the setting of the drainage frame 6, the cooling water after heat exchange in the two heat exchange tubes 3 can be discharged at the same time, thereby forming a circulating cooling operation.

[0030] The annular frame 8 is annular and hollow inside, and both sides of the annular frame 8 are connected with water inlet pipes 9. The water inlet pipe 9 is used to inject water into the annular frame 8, and the cooling water inside the annular frame 8 is discharged between the two heat conducting plates 2 through a plurality of branch pipes 10, which has the function of synchronous cooling, and further improves the uniformity of the temperature reduction of the furnace mouth 1. The outlet pipe 11 is used to discharge the cooling water inside the annular cavity.

[0031] The heat conducting plate 2 is provided with a drainage recess 12, which faces the inner circle of the furnace port 1. There is a branch pipe 10 between any two adjacent heat conducting plates 2 to connect the annular cavity of the furnace port 1 and the inner cavity of the annular frame 8. The setting of the drainage recess 12 facilitates the water source entering the annular cavity to flow in an annular manner, filling the entire annular cavity, improving the heat exchange and cooling effect thereof, and the water is discharged through the outlet pipe 11 after the annular flow, forming a water circulation cooling process.

[0032] Embodiment 2:

[0033] like Figure 5-8 As shown, this embodiment provides a water supply and drainage device for a water-cooled furnace port 1 of a converter, and the structure is basically the same as that of the embodiment 1, except that the drainage frame 6 is connected to the pressure relief assembly 13 through the pressure relief pipe 22, and the pressure relief assembly 13 includes a movable frame 14, and the movable frame 14 is a hollow structure, and the inner cavity of the drainage frame 6 is connected to the inner cavity of the movable frame 14 through the pressure relief pipe 22. Through the arrangement of the pressure relief pipe 22, the air pressure inside the drainage frame 6 can be discharged, so as to avoid the high temperature of the hot water inside the heat exchange tube 3 generating water vapor after heat exchange, and the high-intensity pressure causing the heat exchange tube 3 to reduce the sealing performance or damage the heat exchange tube 3.

[0034] A ring block 16 is fixedly connected to one side of the inner wall of the movable frame 14, and the ring block 16 is connected to the pressure relief pipe 22. A movable plate 17 is hinged at the top of the inner wall of the movable frame 14, and a piston block 18 is fixedly connected to one side of the movable plate 17. The other side of the inside of the movable frame 14 is slidably connected to a driving plate 19 through a column 23 and is fixedly connected to a support plate 24. Two connecting frames 20 are hinged between the bottom of the driving plate 19 and the other side of the movable plate 17, and an extrusion spring 21 is fixedly connected between the top of the movable plate 17 and the top of the inner wall of the movable frame 14.

[0035] The column 23 is fixed between the top of the inner wall of the movable frame 14 and the support plate 24. The column 23 is connected to the compression spring 21 and passes through the drive block and then passes through the gap between the two connecting frames 20. The column 23 is used to make the drive block slide up and down.

[0036] The piston block 18 has a cylindrical lower portion and a hemispherical upper portion. The diameter of the hemispherical upper portion of the piston block 18 is the inner diameter of the annular block 16 , and the outer diameter of the cylindrical lower portion of the piston block 18 is greater than the inner diameter of the annular block 16 . The hemispherical upper portion of the piston block 18 is movably inserted into the annular block 16 so that the piston block 18 blocks the annular block 16 .

[0037] The working principle of this utility model is:

[0038] By setting the water injection frame 4, cooling water can be injected into the two heat exchange tubes 3 synchronously. The flow directions of the cooling water in the two heat exchange tubes 3 are set in opposite directions, which can improve the uniformity of the cooling of the furnace mouth 1. After the flow and heat exchange, the cooling water after the heat exchange in the two heat exchange tubes 3 can be synchronously discharged through the setting of the drainage frame 6. The water inlet pipe 9 is used to inject water into the annular frame 8. The cooling water in the annular frame 8 is discharged between the two heat conducting plates 2 through a plurality of branch pipes 10, which has the function of synchronous cooling. The setting of the drainage recess 12 facilitates the water source entering the annular cavity to flow in an annular manner and fill the entire annular cavity. In this way, through the dual cooling of the heat exchange tube 3 and the annular frame 8, the cooling effect and the uniformity of the cooling of the furnace mouth 1 are improved.

[0039] After heat exchange through the water source, the high-pressure water vapor can squeeze the piston block 18 inside the movable frame 14 through the pressure relief pipe 22. When the steam pressure is greater than the squeezing force applied to the movable plate 17 by the squeezing spring 21, the piston block 18 moves out from the inside of the annular block 16, thereby forming a pressure relief operation. After the pressure relief is completed, the elastic force of the squeezing spring 21 itself can squeeze the driving plate 19 downward, causing the driving plate 19 to move downward, thereby driving the connecting frame 20 to move in a fan shape, squeezing the movable plate 17 in the opposite direction, thereby resetting the piston block 18 and blocking the annular block 16 again.

[0040] It should be noted that Example 2 is implemented based on Example 1. Example 2 is only a preferred method of Example 1. The implementation of Example 2 will not affect the independent implementation of Example 1.

[0041] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention shall fall within the scope of protection of the present invention.

[0042] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

Claims

1. A water-cooling furnace mouth water supply and drainage device for a converter, comprising a furnace mouth, wherein an annular cavity is provided inside the furnace mouth, characterized in that: A plurality of heat conduction plates are welded in an array in the annular cavity of the furnace mouth, two heat exchange tubes are penetrated and welded on the outer wall of the furnace mouth, the water inlet ends of the two heat exchange tubes are commonly connected with a water injection frame, the water injection frame is connected with a water injection pipe, the water outlet ends of the two heat exchange tubes penetrate a plurality of heat conduction plates and the outer wall of the furnace mouth in opposite directions in turn, extend to the outside of the furnace mouth and are commonly connected with a drainage frame, the drainage frame is connected with a drainage pipe, the annular cavity of the furnace mouth is connected with an annular frame located outside the furnace mouth through a plurality of branch pipes, an outlet pipe is welded at the bottom end of the furnace mouth, and the outlet pipe is connected with the annular cavity of the furnace mouth.

2. The converter water cooling furnace mouth water supply and drainage device according to claim 1, characterized in that: The annular frame is annular and hollow inside, and both sides of the annular frame are connected with water inlet pipes.

3. The converter water cooling furnace mouth water supply and drainage device according to claim 2, characterized in that: The heat conducting plate is provided with a drainage recess, which faces the inner circle of the furnace opening. There is a branch pipe between any two adjacent heat conducting plates to connect the annular cavity of the furnace opening and the inner cavity of the annular frame.

4. The converter water cooling furnace mouth water supply and drainage device according to claim 1, characterized in that: The water injection frame and the drainage frame are both hollow structures.

5. The converter water cooling furnace mouth water supply and drainage device according to claim 4, characterized in that: The drainage frame is connected to a pressure relief assembly through a pressure relief pipe. The pressure relief assembly includes a movable frame. The movable frame is a hollow structure. The inner cavity of the drainage frame is connected to the inner cavity of the movable frame through the pressure relief pipe.

6. The converter water cooling furnace mouth water supply and drainage device according to claim 5, characterized in that: An annular block is fixedly connected to one side of the inner wall of the movable frame, the annular block is communicated with the pressure relief pipe, a movable plate is hingedly connected to the top of the inner wall of the movable frame, a piston block is fixedly connected to one side of the movable plate, the other side of the inside of the movable frame is slidably connected to a driving plate through a column and is fixedly connected to a supporting plate, two connecting frames are hingedly connected between the bottom of the driving plate and the other side of the movable plate, and an extrusion spring is fixedly connected between the top of the movable plate and the top of the inner wall of the movable frame.

7. The converter water cooling furnace mouth water supply and drainage device according to claim 6, characterized in that: The upright post is fixed between the top of the inner wall of the movable frame and the support plate. The upright post is sequentially connected with the extrusion spring and penetrates the driving block and then passes through the gap between the two connecting frames.

8. The converter water cooling furnace mouth water supply and drainage device according to claim 6, characterized in that: The piston block is cylindrical at the bottom and hemispherical at the top. The diameter of the hemispherical top is the inner diameter of the annular block. The outer diameter of the cylindrical bottom is larger than the inner diameter of the annular block. The hemispherical top is movably inserted into the annular block so that the piston block blocks the annular block.

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