Crystallizer for continuous casting machine

Abstract

The utility model discloses a crystallizer for a continuous casting machine. The crystallizer comprises a crystallization cavity and a cover body. The cover body comprises a key board; the key board is sleeved on the cooling interlayer at the top of the copper pipe; a plurality of through holes are circumferentially formed in the key board at intervals; a gap defined by the cooling interlayer, the upper sealing flange and the key plate is communicated with a pipeline structure in the cooling interlayer through the through holes. When the crystallizer with the structure is used on a continuous casting machine, even if the casting speed of molten steel is changed, the situation that the flange seal of the crystallizer is burnt out and leaks water can be effectively avoided when the casting speed of the molten steel is changed, and the use safety and reliability of the crystallizer are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of continuous casting machine, in particular to a crystallizer for continuous casting machine. BACKGROUND

[0002] The crystallizer of the continuous casting machine is the most critical component in the continuous casting equipment, and is usually referred to as the "heart" of the continuous casting machine. After the high-temperature molten steel is injected into the crystallizer, the molten steel gradually solidifies to obtain a shell with the required specifications and shape, and ensures that the structure and thickness of the shell are uniform and stable.

[0003] During the use of the continuous casting machine, once the pouring and drawing speed fluctuates, the molten steel level in the crystallizer fluctuates greatly, which easily causes the sealing components at the flange of the copper pipe of the crystallizer to be burnt and leak, resulting in the inability to normally pour and affecting production. After the flange sealing of the crystallizer is burnt and leaks, the crystallizer cannot be normally started, which seriously affects the production yield. The downtime caused by one-time leakage can be 8-32 hours, which seriously affects the normal production.

[0004] The information disclosed in the background section is only intended to increase the understanding of the general background of the present application and should not be considered as admitting or implying that the information constitutes prior art in any form. SUMMARY

[0005] The present application provides a crystallizer for a continuous casting machine, which has no risk of burning the sealing components during use, thereby improving the sealing reliability of the crystallizer.

[0006] The present application provides a crystallizer for a continuous casting machine, which has no risk of burning the sealing components during use, thereby improving the sealing reliability of the crystallizer.

[0007] The cover body comprises a key plate, the key plate is sleeved on the cooling layer on the top of the copper pipe, a plurality of through holes are arranged on the key plate in a circumferential direction, and the gap surrounded by the cooling layer, the upper sealing flange and the key plate is communicated with the pipeline structure in the cooling layer through the through holes.

[0008] Preferably, the diameter of the through hole 11 is 5-6 mm.

[0009] Preferably, the key plate comprises a plate body, a stepped area, a mounting area and a clamping hole, the clamping hole is arranged in the center of the plate body, the clamping hole is clamped on the outer wall of the top of the copper pipe, the stepped area is arranged on the periphery of the clamping hole, and the mounting area is arranged on the periphery of the stepped area.

[0010] The through hole is arranged on the stepped area.

[0011] Preferably, comprising: a plurality of mounting holes; the mounting holes are arranged on the mounting area.

[0012] Preferably, a recess is arranged on the top surface of the cooling interlayer; the key plate is clamped on the recess; the upper sealing flange is arranged on the key plate and clamped with the key plate.

[0013] Preferably, the cover body comprises: a top plate, a first flange body; the top plate is mounted on the first flange body; a second flange body is arranged on the top periphery of the crystallization cavity; the first flange body and the second flange body are detachably connected.

[0014] Preferably, comprising: a flange sealing ring; the flange sealing ring is clamped in the groove on the bottom surface of the upper sealing flange, and abuts against the cooling interlayer.

[0015] Preferably, comprising: a pressing plate; the pressing plate is arranged on the outer sidewall of the upper part of the crystallization cavity.

[0016] The beneficial effects that can be produced by the present application include:

[0017] 1) The crystallizer for continuous casting machine provided by the present application can effectively avoid the situation that the flange sealing of the crystallizer is burnt and leaks when the pouring and drawing speed of the molten steel changes, thereby ensuring the safety and reliability of the use of the crystallizer. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The key plate in at least one embodiment provided by the present application is shown in the schematic diagram; wherein a) is a top view; b) is a schematic diagram of A-A section view of the a) diagram;

[0019] Figure 2 The three-dimensional schematic diagram of the crystallizer for continuous casting machine in at least one embodiment provided by the present application is shown; a) is a whole three-dimensional schematic diagram; b) is a three-dimensional sectional schematic diagram;

[0020] Figure 3 The three-dimensional schematic diagram of the crystallizer for continuous casting machine in at least one embodiment provided by the present application is shown; a) is a whole three-dimensional schematic diagram; b) is a three-dimensional sectional schematic diagram; Figure 2 The enlarged structure schematic diagram of point A in b of the three-dimensional schematic diagram of the crystallizer for continuous casting machine in at least one embodiment provided by the present application is shown;

[0021] Figure 4 The three-dimensional bottom view structure schematic diagram of the crystallizer for continuous casting machine in at least one embodiment provided by the present application is shown;

[0022] LEGEND:

[0023] Step region 1, through hole 11, gap 111, clamping hole 21, mounting hole 12, key plate 13, top plate 131, upper sealing flange 132, flange sealing ring 121, crystallization cavity 14, pouring gate 141, pressing plate 142, cooling interlayer 143, partition layer 144, copper pipe 15, first flange body 133, second flange body 134. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] Therefore, the detailed description of the embodiments of the present application provided in the drawings below is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0026] The technical means not described in detail in the present application and not used to solve the technical problems of the present application are set according to common knowledge in the art, and various common knowledge setting methods can be implemented.

[0027] Referring to Figures 1 to 4 The continuous casting machine crystallizer provided by the present application comprises a crystallization cavity 14 and a cover. The cover is arranged on an opening at the top of the crystallization cavity 14. The crystallization cavity 14 comprises a copper pipe 15 and a partition layer 144. The copper pipe 15 is arranged in the crystallization cavity 14 along the central axis of the crystallization cavity 14. The partition layer 144 is arranged between the outer wall of the copper pipe 15 and the crystallization cavity 14. A cooling layer 143 is arranged in the outer wall of the copper pipe 15. The cooling layer 143 is used for circulating cooling water to cool the high-temperature molten iron poured in the copper pipe 15. The cooling layer 143 is in communication with a circulating cooling water storage tank pipeline. The circulating water can be introduced and discharged on one side. The specific structure is arranged according to the existing crystallizer structure, which will not be described here. An opening is arranged at the top of the crystallization cavity 14. After a sealing flange 132 is arranged on the opening, the cover is arranged to seal the crystallization cavity 14.

[0028] The cover body comprises a top plate 131, a key plate 13, and a flange body. The flange body is arranged on the periphery of the cover body and detachably connected with the flange body on the periphery of the top of the crystallization cavity. The top plate is arranged on the top surface of the upper sealing flange 132. The upper sealing flange 132 is arranged on the key plate 13. The key plate 13 is sleeved on the outer wall of the copper pipe 15 and abuts against the top opening of the cooling layer 143. The heat exchange pipe structure is arranged in the cooling layer 143. A plurality of through holes 111 are arranged on the key plate 13 in a circumferential direction. The through holes 111 are connected with the heat exchange pipe structure and the upper sealing flange 132, so that part of the cooling water enters the gap 111 between the key plate 13, the cooling layer 143 and the upper sealing flange 132 through the through holes 111, and the upper sealing flange 132 near the pouring port 141 of the top of the copper pipe 15 is cooled, so as to avoid the damage of the upper sealing flange 132 caused by the unstable pouring flow and the leakage caused by the damage of the upper sealing flange 132. The pouring port 141 is arranged on the cover body and opposite to the opening of the copper pipe 15, so as to pour the hot molten steel.

[0029] The device is arranged on the key plate step area 1 of the crystallizer in a circumferential direction, so as to strengthen the sealing cooling water of the flange, prevent the damage of the sealing structure of the crystallizer caused by the fluctuation of the pulling speed, and prevent the leakage caused by the damage of the sealing structure.

[0030] In an embodiment, a recess is arranged on the outer side wall of the top of the cooling layer 143. The key plate 13 is clamped on the recess. The cooling liquid pipe structure in the cooling layer 143 is arranged with an opening on the recess, so that the cooling liquid can partially enter the gap 111. The bottom surface of the central area of the upper sealing flange 132 abuts against the top surface and the outer side wall of the key plate 13, so as to fix the installation position of the key plate 13.

[0031] In an embodiment, the key plate 13 comprises a plate body, a step area 1, a clamping hole 21, and an installation area. The clamping hole 21 is arranged in the center of the plate body and clamped on the top periphery of the copper pipe 15. The step area 1 is arranged on the periphery of the clamping hole 21. The installation area is arranged on the periphery of the step area 1.

[0032] In an embodiment, a plurality of installation holes 12 are arranged on the installation area in a circumferential direction, so as to realize the detachable connection of the key plate 13.

[0033] In an embodiment, a flange sealing ring 121 is arranged in the groove on the bottom surface of the upper sealing flange 132 and abuts against the cooling layer 143. The flange sealing ring 121 can prevent the cooling liquid in the cooling layer 143 from entering the copper pipe 15.

[0034] In an embodiment, the gap 111 is surrounded by the flange sealing ring 121, the upper sealing flange 132, the key plate 13 and the cooling layer 143.

[0035] In a specific embodiment, the pressing plate 142 is arranged on the outer side wall of the upper part of the crystallization cavity 14 and extends outwardly beyond the crystallization cavity 14. The pressing plate 142 can be used to fix the position of the crystallizer according to the use requirement.

[0036] In a specific embodiment, the stepped area 1 is equally divided into four units, and two through holes are arranged in each unit. Diagonal lines are arranged near the two through holes 11, and the two through holes 11 are symmetrically arranged along the diagonal lines. The uniform distribution of the through holes can achieve a better leakage prevention effect.

[0037] In a specific embodiment, the angle between the extension line of the through hole 11 and the diagonal line is 15-30°.

[0038] In a specific embodiment, the aperture of the through hole 11 is 5-6 mm. According to this arrangement, the amount of cooling liquid passing through the through hole 11 can meet the cooling requirement, and the opening can also avoid affecting the stress reliability of the key plate 13.

[0039] The device can effectively reduce the flow blocking accidents caused by sealing leakage in the production of Xianfu Steel, and ensure the production yield. It is beneficial to reduce the cost of steelmaking production and improve the economic benefit.

[0040] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A crystallizer for a continuous casting machine, comprising: The crystallization cavity (14) and the cover body; The crystallization cavity (14) is provided with an opening on the top surface, and the cover body is arranged on the opening. The crystallization cavity (14) comprises a copper pipe (15) and a partition layer (144), the copper pipe (15) is provided with the partition layer (144) outside, and a cooling sandwich layer (143) is arranged on the side wall of the copper pipe (15); the cooling sandwich layer (143) is in communication with a circulating cooling water storage tank pipeline; a pouring port (141) is arranged in the middle of the cover body; the pouring port (141) is arranged opposite to the copper pipe (15) and is in communication with the copper pipe (15); The cover body comprises a key plate (13); the key plate (13) is sleeved on the cooling sandwich layer (143) on the top of the copper pipe (15); a plurality of through holes (11) are arranged on the key plate (13) in a circumferential direction; the gap (111) surrounded by the cooling sandwich layer (143), the upper sealing flange (132) and the key plate (13) is in communication with the pipeline structure in the cooling sandwich layer (143) through the through holes (11).

2. The crystallizer for a continuous casting machine according to claim 1, characterized by The diameter of the through hole (11) is 5-6mm.

3. The crystallizer for a continuous casting machine according to claim 1, characterized by The key plate (13) comprises a plate body, a stepped area (1), a mounting area and a clamping hole (21); the clamping hole (21) is arranged in the center of the plate body; the clamping hole (21) is clamped on the outer wall of the top of the copper pipe (15); the stepped area (1) is arranged on the periphery of the clamping hole (21); the mounting area is arranged on the periphery of the stepped area (1). The through hole (11) is arranged on the stepped area (1).

4. The crystallizer for a continuous casting machine according to claim 3, characterized by It comprises: A plurality of mounting holes (12) are arranged on the mounting area in a spaced manner. The mounting hole (12) is arranged on the mounting area in a spaced manner.

5. The crystallizer for a continuous casting machine according to claim 1, characterized by A recess is arranged on the top surface of the cooling sandwich layer (143); the key plate (13) is clamped on the recess; and the upper sealing flange (132) is arranged on the key plate (13) and is clamped with the key plate (13).

6. The crystallizer for a continuous casting machine according to claim 5, characterized by The cover body comprises: A top plate (131) and a first flange body (133); the top plate (131) is mounted on the periphery of the first flange body; A second flange body (134) is arranged on the periphery of the top of the crystallization cavity (14); the first flange body (133) and the second flange body (134) are detachably connected.

7. The crystallizer for a continuous casting machine according to claim 1, characterized by It comprises: A flange sealing ring (121) is clamped in the groove on the bottom surface of the upper sealing flange (132) and abuts against the cooling sandwich layer (143).

8. The crystallizer for a continuous casting machine according to claim 1, characterized by It comprises: A pressing plate (142) is arranged on the outer side wall of the upper part of the crystallization cavity (14).

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