Continuous casting secondary cooling water nozzle system

Abstract

The utility model relates to the technical field of steel production, and discloses a continuous casting secondary cooling water nozzle system which comprises a continuous casting machine and a supporting frame fixedly connected to the outer wall of the continuous casting machine, a nozzle mechanism is arranged on the supporting frame, a filtering mechanism is arranged above the nozzle mechanism, the nozzle mechanism comprises a booster pump, and the booster pump is connected with the supporting frame. A first connecting pipe is arranged at the output end of the bottom of the booster pump in a communicating mode, a water collecting frame is arranged at the end, away from the booster pump, of the first connecting pipe in a communicating mode, and when one communicating nozzle is blocked, a communicating column and a sliding ring cannot be extruded by pressurized water flow, so that a spring cannot be compressed; therefore, the blocking between the stop block and the communicating nozzle is not released, water cannot flow out, the single communicating nozzle can be observed in the first time, the communicating nozzle can be quickly repaired, and the situation that the continuous casting work efficiency is influenced due to the blocking problem can be reduced to the maximum extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of iron and steel production, and specifically relates to a secondary cooling water nozzle system for continuous casting. Background Art

[0002] The continuous casting process is actually a solidification heat transfer process from high-temperature molten steel to solid state. Therefore, the solidification heat transfer process of the continuous casting billet plays a crucial role in the quality of the billet, such as surface cracks, internal cracks, bulging, etc. In the solidification heat transfer process of the continuous casting billet, water is mostly used as the cooling medium. That is to say, in a sense, continuous casting technology is water cooling technology, that is, a solidification heat transfer process in which high-temperature molten steel is solidified into a continuous casting billet through cooling water.

[0003] The water cooling system is composed of many nozzles arranged regularly around the continuous casting billet. When some nozzles are blocked, the temperature of the continuous casting billet at the corresponding position rises extremely rapidly due to lack of cooling, and the temperature rise can be as high as several hundred degrees Celsius, resulting in uneven cooling and forming thermal stress, and finally causing cracks in the continuous casting billet. Therefore, when the nozzle is blocked, it is necessary to observe the blockage of a single nozzle in the first time, and then quickly repair this nozzle, so as to minimize the repair time and improve the efficiency of the continuous casting work.

[0004] In view of this, the present utility model is specifically proposed. Content of the Utility Model

[0005] To solve the above technical problems that the water cooling system is composed of many nozzles arranged regularly around the continuous casting billet. When some nozzles are blocked, the temperature of the continuous casting billet at the corresponding position rises extremely rapidly due to lack of cooling, and the temperature rise can be as high as several hundred degrees Celsius, resulting in uneven cooling and forming thermal stress, and finally causing cracks in the continuous casting billet. Therefore, when the nozzle is blocked, it is necessary to observe the blockage of a single nozzle in the first time, and then quickly repair this nozzle, so as to minimize the repair time and improve the efficiency of the continuous casting work. The basic concept of the technical solution adopted by the present utility model is:

[0006] A secondary cooling water nozzle system for continuous casting, including a continuous casting machine;

[0007] A support frame fixedly connected to the outer wall of the continuous casting machine, a nozzle mechanism is arranged on the support frame, a filtering mechanism is arranged above the nozzle mechanism, and the nozzle mechanism includes a booster pump:

[0008] A first connecting pipe is connected to the bottom output end of the booster pump. One end of the first connecting pipe away from the booster pump is connected to a water collecting frame. A second connecting pipe is connected to the outer wall of the water collecting frame. One end of the second connecting pipe away from the water collecting frame is connected to another water collecting frame. A connecting nozzle is connected to the bottom end of the water collecting frame. A fixing ring is fixedly connected to the inner wall of the connecting nozzle. A spring is fixedly connected to the top end of the fixing ring. One end of the spring away from the fixing ring is fixedly connected to a sliding ring. A connecting column is fixedly connected to the inner wall of the sliding ring. One end of the connecting column away from the sliding ring is fixedly connected to a connecting block. A conical block is fixedly connected to the top end of the connecting block.

[0009] As a preferred embodiment of the present invention, the filtering mechanism includes a filtering box fixedly connected to the top end of the support frame. A motor is fixedly connected to the top end of the filtering box. The output end of the motor is fixedly connected to a turntable. A dispersing plate is fixedly connected to the top end of the turntable. A clamping groove is formed in the inner wall of the filtering box. A filter plate is clamped in the inner wall of the clamping groove. A guiding plate is fixedly connected to the bottom end of the inner wall of the filtering box.

[0010] As a preferred embodiment of the present invention, the number of the water collecting frames is three, and the water collecting frames are evenly and equidistantly distributed at the bottom end of the support frame. The number of the connecting nozzles is several, and the connecting nozzles are evenly and equidistantly distributed at the bottom ends of the respective water collecting frames.

[0011] As a preferred embodiment of the present invention, the number of the connecting columns is four, and the connecting columns are evenly and equidistantly distributed at the top end of the connecting block.

[0012] As a preferred embodiment of the present invention, the outer wall of the sliding ring is slidably connected to the inner wall of the connecting nozzle, and a communication hole is formed at the top end of the connecting column.

[0013] As a preferred embodiment of the present invention, the number of the dispersing plates is several, and the dispersing plates are evenly and equidistantly distributed at the top end of the turntable.

[0014] As a preferred embodiment of the present invention, the inner wall of the clamping groove is fitted and matched with the outer wall of the filter plate, and a water outlet is formed at the bottom end of the filtering box, and the water outlet is connected to the top output end of the booster pump.

[0015] The present invention has the following beneficial effects compared with the prior art:

[0016] In this utility model, water is transmitted to the water collecting frame through a booster pump and a first connecting pipe. At this time, the water flow obtains kinetic energy through pressurization, and then the water flow will rush into the connecting nozzle. The connecting column inside the connecting nozzle that is impacted will be squeezed to drive the slip ring to move downward. When the slip ring moves downward, it will squeeze and compress the spring. At the same time, during the downward movement of the connecting column, it will push the connecting column and the stopper downward. By moving the stopper downward, the sealing effect between the stopper and the bottom end of the connecting nozzle can be released. Subsequently, the pressurized water flow will be dispersed around through the conical block, and then sprayed downward through the outlet at the bottom end of the connecting nozzle. The sprayed water flow will form a scattered water curtain to cool the solidified casting blank. When a connecting nozzle is blocked, the connecting column and the slip ring will not be squeezed by the pressurized water flow. Therefore, the spring will not be compressed, resulting in the stopper not releasing the blockage of the connecting nozzle, so no water will come out. Thus, this single connecting nozzle can be observed immediately, and the connecting nozzle can be repaired quickly, which will minimize the impact of the blockage problem on the efficiency of the continuous casting work to the greatest extent.

[0017] In this utility model, when the motor is started, its output end will drive the turntable to rotate. When the turntable rotates, it can drive the dispersion plate to rotate, so as to slow down the external cooling water. Then, through the rotation of the dispersion plate, the cooling water is beaten and dispersed, which can slow down a large amount of cooling water directly impacting and contacting the filter plate, resulting in a significant reduction in the service life of the filter plate. The cooled water after dispersion will pass through the filter plate for filtration, and impurities in the cooling water can be filtered, thereby slowing down the blockage of the connecting nozzle caused by impurities.

[0018] The following further describes in detail the specific implementation manners of this utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In the drawings:

[0020] Figure 1 is the schematic diagram of the overall structure of this utility model;

[0021] Figure 2 is the schematic diagram of the internal structure of this utility model;

[0022] Figure 3 is the schematic diagram of the nozzle mechanism structure of this utility model;

[0023] Figure 4 is the partial sectional view structure schematic diagram of the nozzle mechanism of this utility model;

[0024] Figure 5 is the schematic diagram of the internal structure of the filter mechanism of this utility model.

[0025] In the figure: 1. Continuous casting machine; 2. Support frame; 31. Nozzle mechanism; 311. Booster pump; 312. First connecting pipe; 313. Water collecting frame; 314. Second connecting pipe; 315. Connecting nozzle; 316. Fixed ring; 317. Spring; 318. Slip ring; 319. Connecting column; 3110. Connecting column; 3111. Block; 3112. Tapered block; 32. Filter mechanism; 321. Filter box; 322. Motor; 323. Turntable; 324. Dispersion plate; 325. Card slot; 326. Filter plate; 327. Flow guide plate. Detailed implementation manner

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model.

[0027] As Figures 1 to 5 shown, a secondary cooling water nozzle system for continuous casting includes a continuous casting machine 1, a support frame 2 fixedly connected to the outer wall of the continuous casting machine 1, a nozzle mechanism 31 provided on the support frame 2, a filter mechanism 32 provided above the nozzle mechanism 31. The nozzle mechanism 31 includes a booster pump 311, the bottom output end of the booster pump 311 is connected and communicated with a first connecting pipe 312, one end of the first connecting pipe 312 away from the booster pump 311 is connected and communicated with a water collecting frame 313, the outer wall of the water collecting frame 313 is connected and communicated with a second connecting pipe 314, one end of the second connecting pipe 314 away from the water collecting frame 313 is connected and communicated with another water collecting frame 313, the bottom end of the water collecting frame 313 is connected and communicated with a connecting nozzle 315, a fixed ring 316 is fixedly connected to the inner wall of the connecting nozzle 315, a spring 317 is fixedly connected to the top end of the fixed ring 316, one end of the spring 317 away from the fixed ring 316 is fixedly connected to a slip ring 318, a connecting column 319 is fixedly connected to the inner wall of the slip ring 318, one end of the connecting column 319 away from the slip ring 318 is fixedly connected to a connecting column 3110, one end of the connecting column 3110 away from the connecting column 319 is fixedly connected to a block 3111, and a tapered block 3112 is fixedly connected to the top end of the block 3111.

[0028] Furthermore, the number of the water collecting frames 313 is three, the water collecting frames 313 are evenly and equidistantly distributed at the bottom end of the support frame 2, the number of the connecting nozzles 315 is several, and the connecting nozzles 315 are evenly and equidistantly distributed at the bottom ends of the respective water collecting frames 313. In this way, a large-area cooling water curtain can be formed by multiple connecting nozzles 315, improving the cooling effect on the casting blank.

[0029] Furthermore, the number of the connecting columns 3110 is four, the connecting columns 3110 are evenly and equidistantly distributed at the top end of the block 3111. The connecting columns 3110 can support the block 3111, and at the same time, a through hole can be provided between the connecting column 319 and the block 3111 to ensure the flow of cooling water.

[0030] Furthermore, the outer wall of the slip ring 318 is slidably connected to the inner wall of the connecting nozzle 315. A connecting hole is provided at the top end of the connecting column 319. Through the connecting hole provided at the top end of the connecting column 319, it can be ensured that the cooling water can pass through the connecting column 319 and then be sprayed downward through the connecting nozzle 315.

[0031] The filtering mechanism 32 includes a filtering box 321 fixedly connected to the top end of the support frame 2. A motor 322 is fixedly connected to the top end of the filtering box 321. The output end of the motor 322 is fixedly connected to a turntable 323. A dispersion plate 324 is fixedly connected to the top end of the turntable 323. A clamping groove 325 is provided on the inner wall of the filtering box 321. A filter plate 326 is clamped to the inner wall of the clamping groove 325. A diversion plate 327 is fixedly connected to the bottom end of the inner wall of the filtering box 321.

[0032] Further, the number of the dispersion plates 324 is several, and the dispersion plates 324 are evenly and equidistantly distributed on the top end of the turntable 323. Through the several dispersion plates 324, the injected cooling water can be dispersed, preventing the cooling water from directly impacting the filter plate 326 and prolonging the service life of the filter plate 326.

[0033] Furthermore, the inner wall of the clamping groove 325 is fitted and matched with the outer wall of the filter plate 326. A water outlet is provided at the bottom end of the filtering box 321, and the water outlet is communicated with the top output end of the booster pump 311. In this way, the tight fit after the filter plate 326 is clamped to the inner wall of the clamping groove 325 can be improved, thereby improving the stability after installation.

[0034] The implementation principle of a continuous casting secondary cooling nozzle system in this embodiment is as follows: The filtered water is transmitted to the water collecting frame 313 through the booster pump 311 and the first connecting pipe 312. At this time, the water flow obtains kinetic energy through pressurization, and then the water flow will rush into the communicating nozzle 315. The communicating column 319 inside the impacted communicating nozzle 315 will be squeezed to drive the slip ring 318 to move downward. When the slip ring 318 moves downward, it will squeeze and compress the spring 317. At the same time, during the downward movement of the communicating column 319, it will push the connecting column 3110 and the stopper 3111 downward. By the downward movement of the stopper 3111, the sealing effect with the bottom end of the communicating nozzle 315 can be released. Subsequently, the pressurized water flow will be dispersed around through the conical block 3112, and then sprayed downward through the outlet at the bottom end of the communicating nozzle 315. The sprayed water flow will form a scattered water curtain to cool the solidified casting blank. When a communicating nozzle 315 is blocked, the communicating column 319 and the slip ring 318 will not be squeezed by the pressurized water flow. Therefore, the spring 317 will not be compressed, resulting in the stopper 3111 not releasing the blockage of the communicating nozzle 315, so no water will come out. Thus, this single communicating nozzle 315 can be observed immediately, and thus the repair work of this communicating nozzle 315 can be carried out quickly, which will minimize the impact of the blockage problem on the efficiency of the continuous casting work to the greatest extent.

[0035] External cooling water is connected and transported to the filtration box 321. At this time, the motor 322 is started, and its output end will drive the turntable 323 to rotate. When the turntable 323 rotates, it can drive the dispersion plate 324 to rotate. In this way, the external cooling water can be retarded, and then through the rotation of the dispersion plate 324, the cooling water is beaten and dispersed, so as to slow down the direct impact contact of a large amount of cooling water with the filter plate 326, resulting in a significant reduction in the service life of the filter plate 326. The cooled water after dispersion will pass through the filter plate 326 for filtration, and impurities in the cooling water can be filtered, so as to slow down the blockage phenomenon of the communicating nozzle 315 caused by impurities.

Claims

1. A continuous casting secondary cooling water nozzle system, comprising a continuous casting machine (1); A support frame (2) fixedly connected to the outer wall of the continuous casting machine (1), characterized in that: The support frame (2) is provided with a nozzle mechanism (31), a filtering mechanism (32) is provided above the nozzle mechanism (31), and the nozzle mechanism (31) comprises a booster pump (311): The bottom output end of the booster pump (311) is connected to a first connecting pipe (312); the end of the first connecting pipe (312) away from the booster pump (311) is connected to a water collecting frame (313); the outer wall of the water collecting frame (313) is connected to a second connecting pipe (314); the end of the second connecting pipe (314) away from the water collecting frame (313) is connected to another water collecting frame (313); the bottom end of the water collecting frame (313) is connected to a connecting nozzle (315); the inner wall of the connecting nozzle (315) is fixedly connected to a fixing ring (314). 6), a spring (317) is fixedly connected to the top of the fixing ring (316), a slip ring (318) is fixedly connected to the end of the spring (317) away from the fixing ring (316), a connecting column (319) is fixedly connected to the inner wall of the slip ring (318), a connecting column (3110) is fixedly connected to the end of the connecting column (319) away from the slip ring (318), a stopper (3111) is fixedly connected to the end of the connecting column (3110) away from the connecting column (319), and a conical block (3112) is fixedly connected to the top of the stopper (3111).

2. A continuous casting secondary cooling water nozzle system according to claim 1, characterized in that: The filtering mechanism (32) comprises a filtering box (321) fixedly connected to the top of the supporting frame (2); a motor (322) is fixedly connected to the top of the filtering box (321); a rotating disk (323) is fixedly connected to the output end of the motor (322); a dispersion plate (324) is fixedly connected to the top of the rotating disk (323); a slot (325) is provided on the inner wall of the filtering box (321); a filtering plate (326) is clamped on the inner wall of the slot (325); and a guide plate (327) is fixedly connected to the bottom end of the inner wall of the filtering box (321).

3. A continuous casting secondary cooling water nozzle system according to claim 1, characterized in that: The number of the water collecting frames (313) is three, and the water collecting frames (313) are evenly and equidistantly distributed at the bottom end of the support frame (2); the number of the connecting nozzles (315) is a plurality, and the connecting nozzles (315) are evenly and equidistantly distributed at the bottom end of each water collecting frame (313).

4. A continuous casting secondary cooling water nozzle system according to claim 1, characterized in that: The number of the connecting posts (3110) is four, and the connecting posts (3110) are evenly and equidistantly distributed on the top of the stopper (3111).

5. A continuous casting secondary cooling water nozzle system according to claim 1, characterized in that: The outer wall of the sliding ring (318) is slidably connected to the inner wall of the connecting nozzle (315), and a connecting hole is provided at the top of the connecting column (319).

6. A continuous casting secondary cooling water nozzle system according to claim 2, characterized in that: There are a plurality of dispersion plates (324), and the dispersion plates (324) are evenly and equidistantly distributed on the top of the rotating disk (323).

7. A continuous casting secondary cooling water nozzle system according to claim 2, characterized in that: The inner wall of the slot (325) fits snugly with the outer wall of the filter plate (326), and a water outlet is provided at the bottom end of the filter box (321), which is connected to the top output end of the booster pump (311).

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