Billet continuous casting mold simulation device

Abstract

The present invention provides a simulation device for a square billet continuous casting crystallizer, which belongs to the technical field of steel continuous casting. The simulation device includes a support frame, a crystallizer, a film mechanism and a water circulation component; the crystallizer is arranged on the support frame; a containing cavity is arranged inside the crystallizer; a plurality of groups of adding holes are spaced apart on the top of the crystallizer, and the adding holes are connected with the containing cavity; a test side wall is arranged inside the crystallizer, and a second clearance is left between the test side wall and the top of the crystallizer; the film mechanism includes a moving film that is closely attached to the inner side of the test side wall, one end of the moving film passes through the second clearance and is closely attached to the outer side of the test side wall; the moving film has the freedom to move up and down on both sides of the inner and outer sides of the test side wall; the water circulation component is used to introduce circulating water into the crystallizer. The simulation device for a square billet continuous casting crystallizer provided by the present invention can comprehensively and accurately observe the flow field conditions in the crystallizer, and obtain the movement process and movement mode of the molten steel and the protective slag.

Description

Technical Field

[0001] The invention belongs to the technical field of steel continuous casting, and more specifically, relates to a square billet continuous casting crystallizer simulation device. Background Art

[0002] The continuous casting process is an important part of steel production and directly affects the quality of steel. At present, large square billets are often cast in high-speed continuous casting. This method also has many problems. First, the liquid level in the crystallizer fluctuates violently and the surface flow rate increases, which increases the risk of slag rolling; second, the consumption of protective slag is reduced and the lubrication ability is weakened; third, the stability and uniformity of the slag film between the crystallizer and the billet shell decrease, resulting in uneven heat transfer in the crystallizer. In order to facilitate the simulation of the billet shell movement during the continuous casting crystallization process of large square billets, so as to accurately determine the flow field in the crystallizer, the movement process and movement mode of the molten steel and protective slag, a corresponding continuous casting crystallizer model needs to be established.

[0003] In the prior art, a drawing plate is often set in the crystallization shell and driven to move by a drawing motor to simulate the movement of the billet shell. However, the drawing plate can only move in the simulated molten steel, so the influence of the billet shell movement on the stress of the protective slag cannot be observed. Therefore, the observation results are not comprehensive and accurate enough. Summary of the invention

[0004] The purpose of the present invention is to provide a billet continuous casting crystallizer simulation device, aiming to solve the technical problems that the existing simulation device cannot observe the influence of billet shell movement on the force of protective slag and the observation results are not comprehensive and accurate enough.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A billet continuous casting crystallizer simulation device is provided, comprising:

[0007] Support frame;

[0008] A crystallizer is arranged on the support frame; a receiving cavity is arranged inside the crystallizer; a plurality of groups of adding holes for adding non-Newtonian fluid are arranged at intervals on the top of the crystallizer, and the adding holes are connected with the receiving cavity; one side wall of the crystallizer is a first side wall, and a first clearance is left between the bottom of the first side wall and the bottom wall of the crystallizer; a test side wall parallel to and close to the first side wall is arranged inside the crystallizer, and a second clearance is left between the test side wall and the top of the crystallizer;

[0009] The film mechanism comprises a movable film closely attached to the inner side of the test side wall, one end of the movable film passes through the second clearance gap, closely attached to the outer side of the test side wall, and passes through the first clearance gap; the movable film has the freedom to move up and down on both the inner and outer sides of the test side wall; and

[0010] A water circulation component is arranged on the support frame; an inlet end of the water circulation component is connected to the top of the accommodating cavity, and an outlet end of the water circulation component is connected to the bottom of the accommodating cavity, so as to introduce circulating water into the crystallizer.

[0011] Compared with the prior art, the scheme shown in the embodiment of the present application is characterized in that the circulating water introduced into the crystallizer is used to simulate molten steel, and the non-Newtonian fluid is used to simulate protective slag solutions of different viscosities; the movement of the billet shell is simulated by moving the moving membrane up and down on the inner and outer sides of the test side wall. Specifically, when the moving membrane moves outward from the inner side wall, it is used to simulate the movement process of the protective slag in the meniscus and the area below the crystallizer under the movement of the billet shell, so as to observe the influence of the billet shell movement on the force acting on the protective slag; when the moving membrane moves inward from the outer side wall, it is used to simulate the flow process of molten steel under the movement of the billet shell, so as to observe the influence of the billet shell movement on the movement trajectory of the molten steel in the crystallizer; therefore, the flow field conditions in the crystallizer can be comprehensively and accurately observed, and the movement process and movement mode of the molten steel and the protective slag can be obtained.

[0012] In a possible implementation, the film mechanism further includes:

[0013] An inner rotating shaft is disposed in the accommodating cavity and is arranged parallel to the test side wall; both ends of the inner rotating shaft are rotatably connected to the two side walls of the crystallizer;

[0014] An outer rotating shaft is rotatably connected to the support frame and is arranged parallel to the inner rotating shaft; and the outer rotating shaft is placed below the first clearance gap;

[0015] Wherein, two ends of the movable film are correspondingly wound and tensioned on the inner rotating shaft and the outer rotating shaft.

[0016] In some embodiments, the film mechanism further comprises:

[0017] A plurality of inner control rods are arranged at intervals along the vertical direction on the inner side of the test side wall; both ends of the inner control rods are fixed to the test side wall, and a first limiting gap suitable for the movable membrane to slide through is left between the middle of the inner control rods and the test side wall;

[0018] An outer control rod is arranged on the outer side of the test side wall and close to the bottom of the crystallizer; both ends of the outer control rod are fixed to the test side wall, and a second limiting gap suitable for the movable film to slide through is left between the middle of the outer control rod and the test side wall.

[0019] Exemplarily, waterproof bearings and seals are provided between both ends of the inner rotating shaft and the two side walls of the crystallizer.

[0020] In a possible implementation manner, the first side wall is a detachable wall, and an upper end of the first side wall extends upward through the second clearance gap.

[0021] In some embodiments, the first side wall is in a U-shaped structure, and two sides of the U-shaped structure are respectively clamped on two side walls connected to the test side wall.

[0022] In a possible implementation, the water circulation component includes:

[0023] A water storage tank is arranged on the top of the support frame, and the bottom of the water storage tank extends downward into the accommodating cavity through a first pipe to form the inlet end;

[0024] A return water tank is placed at the bottom of the crystallizer; the top of the return water tank extends upward into the accommodating cavity through a second pipe to form the outflow end;

[0025] The water pump is connected to the return water tank and the water storage tank respectively through a third pipe.

[0026] In some embodiments, the first pipeline and the second pipeline are respectively provided with flow regulating valves; and the third pipeline is provided with a flow meter.

[0027] Exemplarily, the water circulation component further includes a flow meter, and a sensing end of the flow meter extends from the addition hole into the accommodating cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic structural diagram of a billet continuous casting crystallizer simulation device provided in an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of the installation structure of the crystallizer and the thin film mechanism provided in an embodiment of the present invention;

[0031] Figure 3 A cross-sectional schematic diagram of the installation structure of the crystallizer and the thin film mechanism provided in an embodiment of the present invention;

[0032] Figure 4 A partial structural schematic diagram of a film mechanism provided in an embodiment of the present invention.

[0033] In the figure: 1. support frame; 2. crystallizer; 21. accommodating chamber; 22. first side wall; 23. first make way gap; 24. test side wall; 25. second make way gap; 26. addition hole; 27. partition; 271. make way hole; 3. film mechanism; 31. moving film; 32. inner rotating shaft; 33. outer rotating shaft; 34. inner control rod; 35. outer control rod; 4. water circulation assembly; 41. water storage tank; 42. return water tank; 43. water pump; 44. first pipeline; 45. second pipeline; 46. third pipeline; 47. flow meter. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0037] Please also read Figures 1 to 4The billet continuous casting crystallizer simulation device provided by the present invention is now described. The billet continuous casting crystallizer simulation device comprises a support frame 1, a crystallizer 2, a film mechanism 3 and a water circulation component 4; the crystallizer 2 is arranged on the support frame 1; a receiving chamber 21 is arranged inside the crystallizer 2; a plurality of groups of adding holes 26 for adding non-Newtonian fluid are distributed at intervals on the top of the crystallizer 2, and the adding holes 26 are connected to the receiving chamber 21; one side wall of the crystallizer 2 is a first side wall 22, and a first clearance gap 23 is left between the bottom of the first side wall 22 and the bottom wall of the crystallizer 2; a test side wall 24 parallel to and close to the first side wall 22 is arranged inside the crystallizer 2, and the test side wall 2 A second clearance gap 25 is left between 4 and the top of the crystallizer 2; the film mechanism 3 includes a movable film 31 that is closely attached to the inner side of the test side wall 24, one end of the movable film 31 passes through the second clearance gap 25, and is closely attached to the outer side of the test side wall 24, and passes through the first clearance gap 23; the movable film 31 has the freedom to move up and down on both sides of the inner and outer sides of the test side wall 24; the water circulation component 4 is arranged on the support frame 1; the inlet end of the water circulation component 4 is connected to the top of the accommodating chamber 21, and the outlet end is connected to the bottom of the accommodating chamber 21, which is used to introduce circulating water into the crystallizer 2.

[0038] It should be noted that, during the continuous casting crystallization process, the molten steel needs to be continuously injected into the crystallizer 2 from the top of the crystallizer 2 and undergo a crystallization process to form a square billet in the crystallizer 2, and the formed square billet needs to be output from the bottom of the crystallizer 2; the surrounding surfaces of the square billet are the billet shell formed when the molten steel crystallizes. Since the formed square billet needs to be output from the bottom of the crystallizer 2, the billet shell of the square billet is continuously moving downward.

[0039] In the present application, circulating water is used to simulate the continuous injection of molten steel; and the test side wall 24 of the crystallizer 2 is used to simulate the solid structure of the billet shell formed by continuous crystallization. Since the actual crystallization site of the molten steel in the crystallizer 2 does not spread to the top of the crystallizer 2, a second clearance gap 25 is left between the test side wall 24 and the top of the crystallizer 2 in the present application; secondly, since the billet shell is constantly moving, the present application uses a moving membrane 31 to move up and down along the test side wall 24 to simulate the movement of the billet shell, and the moving membrane 31 in the present application is closely attached to the test side wall 24, so the solid form and movement state of the billet shell can be simulated by the moving membrane 31 and the test side wall 24.

[0040] It should be understood that the shell formed by crystallization is very close to the side wall of the crystallizer 2. Therefore, the test side wall 24 is parallel to and close to the side wall of the crystallizer 2, but not completely fitted; therefore, the test side wall 24 divides the accommodating chamber 21 into a first chamber and a second chamber, and the first chamber is used to simulate the crystallization of molten steel; since the test side wall 24 is close to the side wall of the crystallizer 2 parallel to it, the space gap of the second chamber is smaller, and when the movable membrane 31 moves from the inside to the outside of the test side wall 24, the protective slag solution enters the second chamber between the test side wall 24 and the removable wall under the action of shear force.

[0041] Optionally, the non-Newtonian fluid used is vegetable oil or animal oil, which can be used to simulate explosion protection slag solutions with different viscosities.

[0042] Preferably, a room temperature non-Newtonian fluid is used as an alternative medium for the protective slag solution, and the viscosity of the non-Newtonian fluid medium will decrease with increasing temperature. Due to the unique rheological properties of non-Newtonian fluids, they can show significant viscosity changes under shear motion conditions, which is closer to actual process conditions. The non-Newtonian fluid is injected into the accommodating chamber 21 through the above-mentioned addition hole 26, and the injection thickness is controlled between 30-40mm to ensure that the injection layer of the non-Newtonian fluid is flush with the height of the experimental side wall of the crystallizer 2, so that it can flow smoothly into the above-mentioned second cavity under the drive of the moving membrane 31, thereby measuring the displacement of the non-Newtonian fluid medium inflow, and then verifying the anti-slag rolling and high lubrication performance of the actual protective slag.

[0043] Optionally, the side wall of the crystallizer 2 is made of acrylic glass; the top cover of the crystallizer 2 is detachably connected.

[0044] Exemplarily, a second clearance gap 25 is left between the test side wall 24 and the top of the crystallizer 2 so that the test side wall 24 is lower than the side wall of the crystallizer 2; preferably, the test side wall 24 is 40 mm lower than the side wall of the crystallizer 2.

[0045] Compared with the prior art, the square billet continuous casting crystallizer simulation device provided by the present invention uses circulating water introduced into the crystallizer 2 to simulate molten steel, and non-Newtonian fluids to simulate protective slag solutions of different viscosities; the movement of the billet shell is simulated by moving the movable membrane 31 up and down on the inner and outer sides of the test side wall 24. Specifically, when the movable membrane 31 moves from the inner side to the outer side of the test side wall 24, it is used to simulate the movement process of the protective slag in the meniscus and the area below the crystallizer 2 under the movement of the billet shell, so as to observe the influence of the billet shell movement on the force acting on the protective slag; when the movable membrane 31 moves from the outer side to the inner side of the test side wall 24, it is used to simulate the flow process of molten steel under the movement of the billet shell, so as to observe the influence of the billet shell movement on the movement trajectory of the molten steel in the crystallizer 2; therefore, the flow field conditions in the crystallizer 2 can be comprehensively and accurately observed, and the movement process and movement mode of the molten steel and the protective slag can be obtained.

[0046] See also Figure 1 and Figure 4 In some possible embodiments, the film mechanism 3 also includes an inner rotating shaft 32 and an outer rotating shaft 33; the inner rotating shaft 32 is arranged in the accommodating chamber 21 and is arranged parallel to the test side wall 24; the two ends of the inner rotating shaft 32 are rotatably connected to the two side walls of the crystallizer 2; the outer rotating shaft 33 is rotatably connected to the support frame 1 and is arranged parallel to the inner rotating shaft 32; and the outer rotating shaft 33 is placed below the first clearance gap 23; wherein, the two ends of the movable film 31 are correspondingly wrapped and tensioned on the inner rotating shaft 32 and the outer rotating shaft 33.

[0047] The movable film 31 is moved up and down on the test side wall 24 by rotating the inner rotating shaft 32 and the outer rotating shaft 33; specifically, when the inner rotating shaft 32 is rotated, the movable film 31 moves from the outer side to the inner side of the test side wall 24, and drives the outer rotating shaft 33 to rotate, so that the winding layer of the movable film 31 on the inner rotating shaft 32 increases; conversely, when the outer rotating shaft 33 is rotated, the movable film 31 moves from the inner side to the outer side of the test side wall 24, and drives the inner rotating shaft 32 to rotate, so that the winding layer of the movable film 31 on the outer rotating shaft 33 increases.

[0048] Optionally, the outer rotating shaft 33 is mounted on the support frame 1 via a bearing support.

[0049] Exemplarily, the inner rotating shaft 32 and the outer rotating shaft 33 are both made of a stainless steel round tube, and the inner diameter of the stainless steel round tube is 20 mm, and the outer diameter is 40 mm, and the two are concentrically arranged.

[0050] Optionally, the inner rotating shaft 32 and the outer rotating shaft 33 are both located at a height of 200 mm above the bottom wall of the crystallizer 2. The movable film is a PVC film with a thickness of 0.1-0.3 mm, a width of 510-520 mm, and a length of 3-5 m, and both ends are fixed on the inner and outer rotating shafts.

[0051] See also Figure 3 In some embodiments, the film mechanism 3 further includes a plurality of inner control rods 34 and an outer control rod 35; the plurality of inner control rods 34 are arranged at intervals on the inner side of the test side wall 24 along the vertical direction; the two ends of the inner control rods 34 are fixed to the test side wall 24, and a first limiting gap suitable for the movable film 31 to slide through is reserved between the middle of the inner control rods 34 and the test side wall 24; the outer control rods 35 are arranged on the outer side of the test side wall 24 and close to the bottom of the crystallizer 2; the two ends of the outer control rods 35 are fixed to the test side wall 24, and a second limiting gap suitable for the movable film 31 to slide through is reserved between the middle of the outer control rods 35 and the test side wall 24.

[0052] By providing the inner control rod 34 and the outer control rod 35 , the movable membrane 31 is closely attached to the inner side or the outer side of the test side wall 24 , so that the test side wall 24 and the movable membrane 31 can jointly simulate the fixed state and the movement state of the blank shell.

[0053] Optionally, two inner control rods 34 are provided, respectively located at the top and bottom of the test side wall 24; at least one outer control rod 35 is provided, and one outer control rod 35 is provided at the outer bottom of the test side wall 24; or two are provided, which are used to be respectively provided at the top and bottom of the outer side of the test side wall 24.

[0054] By providing the first limiting gap and the second limiting gap, the movable membrane 31 is closely attached to the test side wall 24 without hindering the movable membrane 31 from moving up and down.

[0055] Optionally, the inner control rod 34 and the outer control rod 35 are both made of stainless steel tubes with a diameter of 10 mm, and are securely fixed at the upper and lower ends of the test side wall 24 of the crystallizer 2.

[0056] Exemplarily, waterproof bearings and seals are provided between both ends of the inner rotating shaft 32 and the two side walls of the crystallizer 2 .

[0057] The waterproof bearing and the seal are provided to prevent the circulating water from flowing out from the installation gap of the inner rotating shaft 32 and affecting the accuracy of the test.

[0058] See also Figure 1 and Figure 2 In some possible embodiments, the first side wall 22 is a detachable wall, and the upper end of the first side wall 22 extends upward through the second clearance gap 25 .

[0059] By setting the removable wall, a gap suitable for accommodating non-Newtonian fluid can be formed between the removable wall and the test side wall 24, forming a flow area for the protective slag solution; and it is convenient to disassemble this layer of side wall to clean up residual impurities inside after the test.

[0060] See also Figure 3 In some embodiments, the first side wall 22 is in a U-shaped structure, and two sides of the U-shaped structure are respectively clamped on the two side walls connected to the test side wall 24.

[0061] By configuring the detachable wall as a U-shaped structure, it is convenient to clip the detachable wall onto the crystallizer 2 , and it is also convenient to adjust or control the gap between the detachable wall and the test side wall 24 .

[0062] Optionally, the width of the detachable wall is 530-540 mm, the length is 150-155 mm, and the height is 800-1000 mm. The position of the detachable wall buckle on the crystallizer 2 is adjustable, and the gap between the detachable wall and the test side wall 24 can be controlled. Preferably, the gap value is within 0.4-0.7 mm.

[0063] By setting the gap between the test side wall 24 and the detachable wall, the accurate measurement of the inflow depth of the non-Newtonian fluid medium under different shear conditions is achieved, which provides an important experimental basis for the optimization of the protective slag in actual production operations.

[0064] See also Figure 1 In some possible embodiments, the water circulation component 4 includes a water storage tank 41, a recovery tank and a water pump 43; the water storage tank 41 is arranged on the top of the support frame 1, and the bottom of the water storage tank 41 extends downward into the accommodating cavity 21 through a first pipe 44 to form an inlet end; the return water tank 42 is placed at the bottom of the crystallizer 2; the top of the return water tank 42 extends upward into the accommodating cavity 21 through a second pipe 45 to form an outlet end; the water pump 43 is connected to the return water tank 42 and the water storage tank 41 respectively through a third pipe 46.

[0065] The water pump 43 is used to circulate the water flow in the return tank 42 to the water storage tank 41. The water storage tank 41 is used to provide circulating water to the accommodating chamber 21 of the crystallizer 2 to simulate the continuous injection of molten steel.

[0066] See also Figure 1 In some embodiments, flow regulating valves are respectively provided on the first pipeline 44 and the second pipeline 45 ; and a flow meter is provided on the third pipeline 46 .

[0067] The flow regulating valve is used to adjust the water flow rate on the first pipe 44 and the second pipe 45, thereby changing the water flow rate; the flow meter is used to record the amount of water introduced into the water storage tank 41 by the water pump 43 in real time.

[0068] Optionally, the water inlet of the first pipe 44 is set as a straight-cylindrical immersion water inlet, and the second pipe 45 is located directly above the return water tank 42 .

[0069] See also Figure 1 Exemplarily, the water circulation component 4 also includes a flow meter 47 , and the sensing end of the flow meter 47 extends from the adding hole 26 into the accommodating cavity 21 .

[0070] By setting up a flow meter 47, the flow rate of the circulating water introduced can be monitored in real time; and the sensing end of the flow meter 47 can extend into the accommodating cavity 21 from the addition hole 26, without the need for separate drilling, thus saving operating procedures, and the position of the sensing end of the flow meter 47 can be switched as needed to accumulate multiple groups of control group arrays and improve the accuracy of the test.

[0071] See also Figure 3 In some possible embodiments, a partition plate 27 is horizontally extended in the accommodating cavity 21 , and the partition plate 27 is placed below the inner rotating shaft 32 ; a plurality of clearance holes 271 are evenly distributed on the partition plate 27 .

[0072] By setting the partition 27, the circulating water can flow to the bottom of the crystallizer 2 through the evenly distributed relief holes 271 on the partition 27, so as to avoid the circulating water directly gathering at the drain outlet at the bottom to affect the test data of the billet model.

[0073] When conducting the test, the water pump 43 can be started to transport the water in the return tank 42 to the water storage tank 41 through the third pipe 46, and the flow regulating valve on the first pipe 44 can be opened to allow the water to flow through the water storage tank 41 into the accommodating chamber 21 of the crystallizer 2. The water in the crystallizer 2 flows into the second pipe 45 through the yield hole 271 on the partition 27. The flow regulating valve on the second pipe 45 is opened, and the water is again transported by the water pump 43 through the third pipe 46 to the water outlet tank to achieve dynamic balance.

[0074] A non-Newtonian fluid is injected into the accommodating chamber 21 through the addition hole 26 at the top of the crystallizer 2. Optionally, a mixed oil substance is selected. Initially, the mixed oil floats on the upper surface of the water column in the crystallizer 2 and slowly diffuses to the surroundings. Due to the influence of the water flow velocity, the mixed oil moves to the upper end surface of the test side wall 24. At this time, the film mechanism 3 is started to move the moving film 31 from the inside to the outside of the test side wall 24. The mixed oil is acted upon by a force and flows into the gap of the second accommodating chamber between the detachable wall and the test side wall 24, simulating the movement process between the moving blank shell and the crystallizer 2, and observing the influence of the moving blank shell on the flow of the protective slag.

[0075] When the inner rotating shaft 32 is rotated to make the movable film 31 move inward from the outside of the test side wall 24, the movement process of the moving shell and the molten steel is simulated, the movement trajectory of the water flow is observed, and then the influence of the moving shell on the movement trajectory of the molten steel in the crystallizer 2 is obtained. Control the outer movement of the rotating shaft and the movable film.

[0076] Finally, the flow regulating valve on the second pipeline 45 is controlled to adjust different water flow rates, and the different rotation speeds of the inner rotating shaft 32 and the outer rotating shaft 33 are controlled to obtain various parameters under different vibration modes. Through the square billet continuous casting crystallizer simulation device provided by the present application, the liquid flow state, the involvement of protective slag, and the influence of shear motion of the crystallizer 2 in the crystallizer 2 model under different operating parameters can be clearly observed in the laboratory, so that the operator can have a deeper understanding of the flow laws of the multiphase flow composed of protective slag, molten steel, and moving billet shell in the crystallizer 2.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Billet continuous casting crystallizer simulation device, characterized in that: include: Support frame (1); A crystallizer (2) is arranged on the support frame (1); a receiving chamber (21) is arranged inside the crystallizer (2); a plurality of groups of adding holes (26) for adding non-Newtonian fluid are arranged at intervals on the top of the crystallizer (2), and the adding holes (26) are connected to the receiving chamber (21); one side wall of the crystallizer (2) is a first side wall (22), and a first clearance gap (23) is left between the bottom of the first side wall (22) and the bottom wall of the crystallizer (2); a test side wall (24) is arranged inside the crystallizer (2) and is parallel to and close to the first side wall (22), and a second clearance gap (25) is left between the test side wall (24) and the top of the crystallizer (2); The film mechanism (3) comprises a movable film (31) closely attached to the inner side of the test side wall (24), one end of the movable film (31) passes through the second clearance gap (25), closely attached to the outer side of the test side wall (24), and passes through the first clearance gap (23); the movable film (31) has the freedom to move up and down on both the inner and outer sides of the test side wall (24); and A water circulation component (4) is arranged on the support frame (1); the inlet end of the water circulation component (4) is connected to the top of the accommodating chamber (21), and the outlet end is connected to the bottom of the accommodating chamber (21), and is used to introduce circulating water into the crystallizer (2).

2. The billet continuous casting crystallizer simulation device according to claim 1, characterized in that: The film mechanism (3) further comprises: An inner rotating shaft (32) is disposed in the accommodating chamber (21) and is arranged parallel to the test side wall (24); two ends of the inner rotating shaft (32) are rotatably connected to two side walls of the crystallizer (2); An outer rotating shaft (33) is rotatably connected to the support frame (1) and is arranged parallel to the inner rotating shaft (32); and the outer rotating shaft (33) is placed below the first clearance gap (23); Wherein, two ends of the movable membrane (31) are correspondingly wound and tensioned on the inner rotating shaft (32) and the outer rotating shaft (33).

3. The billet continuous casting crystallizer simulation device according to claim 2, characterized in that: The film mechanism (3) further comprises: A plurality of inner control rods (34) are arranged at intervals along the vertical direction on the inner side of the test side wall (24); both ends of the inner control rods (34) are fixed to the test side wall (24), and a first limiting gap suitable for the movable membrane (31) to slide through is reserved between the middle of the inner control rods (34) and the test side wall (24); An outer control rod (35) is arranged on the outer side of the test side wall (24) and close to the bottom of the crystallizer (2); both ends of the outer control rod (35) are fixed to the test side wall (24), and a second limiting gap suitable for the movable membrane (31) to slide through is left between the middle of the outer control rod (35) and the test side wall (24).

4. The billet continuous casting crystallizer simulation device according to claim 2 or 3, characterized in that: Waterproof bearings and seals are provided between the two ends of the inner rotating shaft (32) and the two side walls of the crystallizer (2).

5. The billet continuous casting crystallizer simulation device according to claim 1, characterized in that: The first side wall (22) is a detachable wall, and the upper end of the first side wall (22) extends upwards through the second clearance gap (25).

6. The billet continuous casting crystallizer simulation device according to claim 5, characterized in that: The first side wall (22) is in a U-shaped structure, and two sides of the U-shaped structure are respectively clamped on two side walls connected to the test side wall (24).

7. The billet continuous casting crystallizer simulation device according to claim 1, characterized in that: The water circulation component (4) comprises: A water storage tank (41) is arranged on the top of the support frame (1), and the bottom of the water storage tank (41) extends downward into the accommodating cavity (21) through a first pipe (44) to form the inlet end; A return water tank (42) is placed at the bottom of the crystallizer (2); the top of the return water tank (42) extends upward into the accommodating cavity (21) through a second pipe (45) to form the outflow end; The water pump (43) is respectively connected to the return water tank (42) and the water storage tank (41) through a third pipe (46).

8. The billet continuous casting crystallizer simulation device according to claim 7, characterized in that: The first pipeline (44) and the second pipeline (45) are respectively provided with flow regulating valves; and the third pipeline (46) is provided with a flow meter.

9. The billet continuous casting crystallizer simulation device according to claim 8, characterized in that: The water circulation component (4) further comprises a flow meter (47), wherein the sensing end of the flow meter (47) extends from the addition hole (26) into the accommodating cavity (21).

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