Sectional heat preservation box for continuous casting billets

Abstract

The utility model discloses a continuous casting billet segmented heat preservation box, which relates to the technical field of heat preservation devices and comprises an upper heat preservation cover and a lower heat preservation cover positioned at the bottom of the upper heat preservation cover, a lower heat preservation layer is filled in the lower heat preservation cover, a groove is arranged at the top of the lower heat preservation layer, and rollers are arranged in the groove. The two ends of the rolling wheels are rotationally connected to the lower heat preservation cover, the upper heat preservation cover comprises outer shells arrayed in the axial direction of the lower heat preservation cover, every two adjacent outer shells are connected through a connecting piece, and arc-shaped heat preservation plates are connected to the interiors of the outer shells. According to the segmented heat preservation box for the continuous casting billet, the arc-shaped heat preservation plate component is arranged in the upper heat preservation cover, and the arc-shaped heat preservation plate can reflect heat emitted by the continuous casting billet back through the arc, so that the heat preservation capacity of the continuous casting billet is improved, and meanwhile the situation of heat accumulation caused by an included angle is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heat preservation devices, and more specifically to a segmented heat preservation box for continuous casting billets. Background Art

[0002] A continuous casting insulator is a device used to maintain the temperature of continuous casting insulators during steel production. In the steelmaking process, continuous casting is a continuous casting method in which liquid metal is directly poured into a specific shape. After the insulator emerges from the casting machine, there may be a significant temperature difference between its surface and interior, and the temperature is high. To ensure the quality and efficiency of subsequent processing, the insulator requires appropriate insulation treatment to reduce this temperature difference, prevent cracks, and prepare conditions for subsequent rolling or other hot processing.

[0003] The Chinese patent application number 201721698823.1 discloses an online heat storage type heating device for continuous casting, which includes a roller, a heat preservation cover, and multiple groups of heat storage type heating units; the heat preservation cover includes an upper heat preservation cover and a lower heat preservation cover, and a heat storage type heating unit is installed in the upper heat preservation cover; the upper heat preservation cover is placed on the upper part of the roller, and the lower heat preservation cover is fixed to the lower part of the roller; the upper heat preservation cover, the lower heat preservation cover and the roller form a closed channel; the heat storage type heating units are distributed along the length direction of the heat preservation cover; the space between the upper heat preservation cover and the lower heat preservation cover constitutes a combustion chamber; the upper heat preservation cover and the lower heat preservation cover are both composed of an outer shell and an insulation layer. This online heat storage type heating device for continuous casting has a heating device on the top of the upper heat preservation cover for heating the continuous casting, so that it is kept at a certain temperature for subsequent processing. However, the following problems still exist during use:

[0004] 1. The continuous casting billet is usually square after coming out of the casting machine, and the bottom of the insulation material in the insulation cover is also set in a square shape to facilitate the passage of the continuous casting billet. However, due to the angles in the square space, when the continuous casting billet is heated, heat is easily accumulated at the angles, making it difficult to reflect the heat to the continuous casting billet, resulting in heat loss.

[0005] 2. The thermal insulation cover on the top is usually an integrated setting, which makes it inconvenient to configure the number of heating devices and thermal insulation boxes according to usage. At the same time, the integrated setting is not convenient for adjustment according to the length of the continuous casting billet, resulting in the thermal insulation cover not being able to fit closely with the continuous casting billet, which will cause heat loss.

[0006] Therefore, it is necessary to propose a segmented insulation box for continuous casting billets to solve the above problems. Utility Model Content

[0007] In view of the above problems, the present invention provides a segmented insulation box for continuous casting billets, which has the function of improving the insulation capacity. At the same time, the overall length of the insulation cover can be adjusted to improve the insulation capacity of the continuous casting billets.

[0008] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0009] The continuous casting slab segmented insulation box includes an upper insulation cover and a lower insulation cover located below the upper insulation cover. The upper insulation cover includes a shell arrayed along the axial direction of the lower insulation cover. Two adjacent shells are connected by a connector. The interior of the shell is connected to an arc-shaped insulation board. The arc-shaped arrangement of the arc-shaped insulation board can reflect heat and increase the heat insulation capacity.

[0010] A cavity is provided between the arc-shaped heat-insulating plate and the shell, a support frame is provided in the cavity, the support frame is connected to the arc-shaped heat-insulating plate and the cavity, a connecting pipe that passes through the cavity is connected to the support frame, and a branch pipe that extends to the inner annular surface of the arc-shaped heat-insulating plate is connected to the outer wall of the connecting pipe. Through the arrangement of the connecting pipe, the heat of the heating area can be guided to other areas to expand the heating area;

[0011] Heating devices are connected to both sides of the shell, and nozzles of the heating devices extend into the inner annular surface of the arc-shaped insulation board.

[0012] Preferably, the interior of the lower thermal insulation cover is filled with a lower thermal insulation layer, and a roller is rotatably connected inside the lower thermal insulation layer to improve the thermal insulation capacity and transportation capacity of the lower thermal insulation cover.

[0013] Preferably, the two ends of the connecting pipe are respectively connected with a first connector and a second connector, the first connector and the second connector are arranged in cooperation with each other, and the two adjacent connecting pipes are connected through the first connector and the second connector, which facilitates the connection between the two connecting pipes.

[0014] Preferably, an inner annular boss is provided on the side of the first connector away from the connecting pipe, and an outer annular boss matching the inner annular boss is connected to the side of the second connector away from the connecting pipe. By setting the inner annular boss and the outer annular boss, the sealing ability of the connection can be increased.

[0015] Preferably, a protrusion is provided at one end of the arc-shaped insulation board, and a groove corresponding to the protrusion is provided at the other end of the arc-shaped insulation board. By coordinating the protrusion and the groove, the connection capacity between two adjacent arc-shaped insulation boards can be increased, thereby improving the insulation capacity.

[0016] Preferably, the shells at both ends are connected with cover plates, and the bottom of the cover plates is provided with square holes for the continuous casting billets to pass through. By providing the cover plates, the heat preservation capacity of the two ends of the upper heat preservation cover is increased.

[0017] Preferably, a sealing ring is provided on one side of the cover plate close to the shell and inserted into the connecting pipe. The cover plate is sealed at both ends of the connecting pipe through the sealing ring. The sealing ring is inserted at both ends of the connecting pipe to seal the two ends and prevent heat from leaking out from both ends.

[0018] Preferably, arc-shaped grooves are provided on the cover plates at both ends, and the cover plates are connected to adjacent arc-shaped insulation plates through the arc-shaped grooves, which can seal the two ends of the arc-shaped insulation plates and prevent heat from leaking out from both ends.

[0019] Preferably, a groove is provided on the top of the lower insulation layer, the roller is located in the groove, and both ends of the roller are rotatably connected to the lower insulation cover, thereby improving the transportation capacity of the continuous casting billet.

[0020] Preferably, mounting plates are connected to the bottom of both sides of the shell, and the mounting plates are supported on the bottom of both ends of the arc-shaped insulation plate. The mounting plates are provided with mounting grooves that match the lower insulation layer. By setting the mounting grooves, the connection capacity between the upper insulation cover and the lower insulation cover can be increased, thereby preventing heat from being lost through the gaps.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This device is equipped with an arc-shaped insulation plate component in the upper insulation cover. The arc-shaped insulation plate can reflect the heat emitted by the continuous casting billet back through the arc, thereby improving the insulation capacity of the continuous casting billet and avoiding the situation where heat accumulation is caused by the angle.

[0023] 2. This device not only increases the insulation capacity by setting a cavity between the arc-shaped insulation plate and the shell, but also can set a connecting pipe in the cavity, which can transport heat to other insulation areas and improve the heating area. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the upper heat preservation cover and the lower heat preservation cover structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the upper and middle heat preservation cover structure of the utility model;

[0026] Figure 3 It is a schematic diagram of the structure of the outer shell and the curved insulation board in the utility model;

[0027] Figure 4This is a schematic diagram of the arc-shaped insulation board and the connecting pipe structure in the present invention;

[0028] Figure 5 It is a schematic diagram of the cover plate structure in the present invention.

[0029] Reference numerals:

[0030] 101. Upper insulation cover; 102. Lower insulation cover; 103. Lower insulation layer; 104. Roller; 105. Shell; 106. Arc-shaped insulation board; 107. Cavity; 108. Support frame; 109. Connecting pipe; 110. Branch pipe; 111. Heating device; 112. First connector; 113. Second connector; 114. Inner annular boss; 115. Outer annular boss; 116. Raised portion; 117. Grooved portion; 118. Cover plate; 119. Sealing ring; 120. Mounting plate; 121. Mounting groove; 122. Arc-shaped groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-5 The continuous casting billet segmented insulation box includes an upper insulation cover 101 and a lower insulation cover 102 located at the bottom of the upper insulation cover 101. When in use, the upper insulation cover 101 covers the lower insulation cover 102. The formed continuous casting billet moves on the roller 104. The upper insulation cover 101 and the lower insulation cover 102 both have the ability to keep warm. The interior of the lower insulation cover 102 is filled with a lower insulation layer 103. The lower insulation layer 103 and the arc insulation plate 106 are made of high-temperature resistant insulation materials. A groove is opened on the top of the lower insulation layer 103. A roller 104 is provided inside, and both ends of the roller 104 are rotatably connected to the lower insulation cover 102. The upper insulation cover 101 includes a shell 105 arranged along the axial direction of the lower insulation cover 102. Multiple shells 105 can be spliced ​​according to the use length, thereby extending the length of the upper insulation cover 101 to achieve the effect of adapting to different conveying lengths. Two adjacent shells 105 are connected by a connecting piece. The interior of the shell 105 is connected with an arc-shaped insulation board 106. The arc-shaped insulation board 106 is larger in diameter than the conveyed continuous casting billet.

[0033] When the temperature of the continuous casting billet is too low, combustible gas will be delivered to it through the heating device 111. When the combustible gas encounters the high-temperature continuous casting billet, combustion will occur. However, the heat can only heat the specified area. The following provides a structure that can deliver heat to the entire insulation area to increase the heating area: Reference Figures 2 to 4 , a cavity 107 is provided between the arc-shaped insulation board 106 and the shell 105, and support frames 108 are provided at both ends of the cavity 107. The support frames 108 are blocked at both ends of the cavity 107 to play the role of heat preservation and heat insulation, and are also used to place a connecting pipe 109. The support frame 108 is connected to the arc-shaped insulation board 106 and the cavity 107. A connecting pipe 109 that runs through the cavity 107 is connected to the support frame 108. When the combustible gas burns in the upper insulation cover 101, it will move to other upper insulation covers 101 through the connecting pipe 109, thereby heating other insulation areas. It should be noted that when the temperature of the continuous casting billet is too low, it will affect the subsequent production, but if the temperature is too high, it will not affect it. The outer wall of the connecting pipe 109 is connected to a branch pipe 110 that extends to the inner ring surface of the arc-shaped insulation board 106;

[0034] refer to Figure 2 , heating devices 111 are connected to both sides of the outer shell 105, and the heating device 111 is connected to the external combustible gas conveying device for conveying combustible gas upward into the insulation cover 101. The nozzle of the heating device 111 extends into the inner ring surface of the arc-shaped insulation plate 106.

[0035] When the two shells 105 are spliced ​​together, the connection between the two sections of the connecting pipe 109 will be misaligned, resulting in heat leakage. The following provides a structure to improve the sealing performance of the connection between the two sections of the connecting pipe 109: Specifically, refer to Figure 2 and Figure 4 The two ends of the connecting pipe 109 are connected with a first connecting head 112 and a second connecting head 113. The inner ring surface diameter of the first connecting head 112 and the second connecting head 113 are the same as the outer ring surface diameter, which can play a role of matching connection. The first connecting head 112 is provided with an inner annular boss 114 on the side away from the connecting pipe 109, and the second connecting head 113 is connected with an outer annular boss 115 matching with the inner annular boss 114 on the side away from the connecting pipe 109. The inner annular boss 114 and the outer annular boss 115 can match, thereby improving the sealing of the connection. The two adjacent connecting pipes 109 are connected through the first connecting head 112 and the second connecting head 113.

[0036] When the two shells 105 are spliced ​​together, the connection between the two arc-shaped insulation boards 106 may be misaligned, resulting in a decrease in the insulation capacity. The following provides a structure for improving the sealing performance of the connection between the two arc-shaped insulation boards 106: Specifically, refer to Figure 2 and Figure 4 A protrusion 116 is provided at one end of the arc-shaped insulation plate 106, and a groove 117 corresponding to the protrusion 116 is provided at the other end of the arc-shaped insulation plate 106. The protrusion 116 and the groove 117 are arranged in cooperation with each other to increase the connectivity between the two arc-shaped insulation plates 106 and improve the insulation ability.

[0037] The two ends of the upper heat preservation cover 101 lack a structure for sealing. The following provides a structure that can seal the two ends of the arc-shaped heat preservation plate 106 and the connecting pipe 109: Specifically, refer to Figure 5 , a cover plate 118 is connected to the outer shell 105 at both ends, and a square hole is provided at the bottom of the cover plate 118 for the continuous casting billet to pass through. The size of the square hole is larger than the continuous casting billet. A sealing ring platform 119 is provided on the side of the cover plate 118 close to the outer shell 105 and inserted into the connecting pipe 109. The sealing ring platform 119 is used to seal the two ends of the connecting pipe 109 to prevent heat from leaking to the outside. An arc groove 122 is provided on the side of the cover plate 118 close to the outer shell 105 to cooperate with the arc insulation plate 106.

[0038] Specifically, refer to Figure 3 The bottom of both sides of the shell 105 are connected with mounting plates 120, and the mounting plates 120 are supported on the bottom of both ends of the arc-shaped insulation plate 106. The mounting plates 120 are provided with mounting grooves 121 that cooperate with the lower insulation layer 103. The mounting plates 120 can not only support the arc-shaped insulation plate 106, but the mounting grooves 121 also cooperate with the support seats at both ends of the roller 104 to press the upper insulation cover 101 onto the top of the lower insulation cover 102.

[0039] In this embodiment, the upper insulation cover 101 covers the top of the lower insulation cover 102, and the continuous casting workpiece flows over the roller 104 on the top of the lower insulation cover 102. The arc-shaped insulation plate 106 inside the upper insulation cover 101 adopts an arc-shaped setting, which can reflect the heat emitted by the continuous casting billet back, thereby improving the insulation ability. When the temperature of the continuous casting billet decreases, combustible gas is sprayed to the continuous casting billet through the heating device 111 to increase the temperature of the continuous casting billet through combustion. When in use, the number of outer shells 105 can be increased through connecting parts, thereby increasing the length of the upper insulation cover 101 to adapt to the length of the continuous casting billet to improve the insulation ability.

[0040] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A continuous casting slab segmented insulation box, comprising an upper insulation cover (101) and a lower insulation cover (102) located below the upper insulation cover (101), characterized in that: The upper heat-insulating cover (101) includes outer shells (105) arranged in an axial array along the lower heat-insulating cover (102), two adjacent outer shells (105) are connected via a connecting piece, and an arc-shaped heat-insulating plate (106) is connected inside the outer shell (105); A cavity (107) is provided between the arc-shaped heat-insulating plate (106) and the shell (105); a support frame (108) is provided in the cavity (107); the support frame (108) is connected to the arc-shaped heat-insulating plate (106) and the cavity (107); a connecting pipe (109) penetrating the cavity (107) is connected to the support frame (108); and a branch pipe (110) extending to the inner annular surface of the arc-shaped heat-insulating plate (106) is connected to the outer wall of the connecting pipe (109); Heating devices (111) are connected to both sides of the shell (105), and the nozzle of the heating device (111) extends into the inner annular surface of the arc-shaped insulation plate (106).

2. The continuous casting slab segmented insulation box according to claim 1, characterized in that: The interior of the lower heat-insulating cover (102) is filled with a lower heat-insulating layer (103), and a roller (104) is rotatably connected inside the lower heat-insulating layer (103).

3. The continuous casting slab segmented insulation box according to claim 1, characterized in that: The two ends of the connecting pipe (109) are respectively connected to a first connecting head (112) and a second connecting head (113); the first connecting head (112) and the second connecting head (113) are arranged in cooperation with each other; two adjacent connecting pipes (109) are connected via the first connecting head (112) and the second connecting head (113).

4. The continuous casting slab segmented insulation box according to claim 3, characterized in that: An inner annular boss (114) is provided on the side of the first connector (112) away from the connecting pipe (109), and an outer annular boss (115) matching the inner annular boss (114) is connected to the side of the second connector (113) away from the connecting pipe (109).

5. The continuous casting slab segmented insulation box according to claim 1, characterized in that: One end of the arc-shaped heat-insulating plate (106) is provided with a raised portion (116), and the other end of the arc-shaped heat-insulating plate (106) is provided with a groove portion (117) corresponding to the raised portion (116).

6. The continuous casting slab segmented insulation box according to claim 5, characterized in that: The housings (105) at both ends are connected with cover plates (118), and the bottom of the cover plates (118) is provided with square holes for the continuous casting billets to pass through.

7. The continuous casting slab segmented insulation box according to claim 6, characterized in that: A sealing ring (119) inserted into the connecting pipe (109) is provided on one side of the cover plate (118) close to the housing (105). The cover plate (118) is sealed at both ends of the connecting pipe (109) through the sealing ring (119).

8. The continuous casting slab segmented insulation box according to claim 6, characterized in that: The cover plates (118) at both ends are provided with arc-shaped grooves (122), and the cover plates (118) are connected to adjacent arc-shaped heat-insulating plates (106) through the arc-shaped grooves (122).

9. The continuous casting slab segmented insulation box according to claim 2, characterized in that: A groove is provided on the top of the lower heat-insulating layer (103), the roller (104) is located in the groove, and both ends of the roller (104) are rotatably connected to the lower heat-insulating cover (102).

10. The continuous casting slab segmented insulation box according to claim 9, characterized in that: The bottoms of both sides of the shell (105) are connected with mounting plates (120), and the mounting plates (120) are supported on the bottoms of both ends of the arc-shaped insulation plate (106). The mounting plates (120) are provided with mounting grooves (121) that match the lower insulation layer (103).

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