Heat preservation and compensation structure for continuous casting billet

Abstract

The utility model discloses a heat preservation and heat compensation structure for a continuous casting billet, which relates to the technical field of heat compensation devices and comprises an upper heat preservation cover and a heating structure fixed on the upper heat preservation cover. The heating structure comprises arc-shaped heating frames symmetrically arranged on the inner side of the arc-shaped heat preservation plate and a controller located on the side wall of the upper heat preservation cover, and nozzles of the symmetrical arc-shaped heating frames are oppositely arranged. According to the heat preservation and heat compensation structure for the continuous casting billet, generated heat can be gathered in a designated area through convection jet of the two arc-shaped heating frames, the situation that the heat is dissipated all around is reduced by guiding the heat, the heat compensation capacity of the continuous casting billet is improved, and the heating efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat supplement devices, and more specifically to a continuous casting billet heat preservation and supplement structure. 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 combustible gas outlet in the upper insulation cover is set toward the continuous casting billet. When the temperature of the continuous casting billet is too low and needs to be reheated, the heat generated by the combustible gas will move to both sides of the continuous casting billet and will not converge toward the position that needs to be heated, which will reduce the heating efficiency. At this time, the heating efficiency of the continuous casting billet can only be improved by increasing the delivery of combustible gas, which will result in excessive consumption of combustible gas.

[0005] 2. The current heating device is fixed, which makes it difficult to adjust the heating area. The heating area can only be controlled by controlling the delivery rate of the combustible gas, which is very inconvenient.

[0006] Therefore, it is necessary to propose a continuous casting billet heat preservation and heating structure to solve the above problems. Utility Model Content

[0007] In response to the above problems, the utility model provides a continuous casting billet heat preservation and heating structure; it has the function of converging heat to improve the heating efficiency, and at the same time can adjust the heating area, which is convenient for adjustment according to usage conditions.

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

[0009] The continuous casting billet heat preservation and supplementary heating structure includes an upper heat preservation cover and a heating structure fixed on the upper heat preservation cover, wherein the upper heat preservation cover is connected to an arc-shaped heat preservation plate, and the heating structure includes an arc-shaped heating frame symmetrically arranged on the inner side of the arc-shaped heat preservation plate and a controller located on the side wall of the upper heat preservation cover. The nozzles of the symmetrical arc-shaped heating frames are arranged facing each other, which has the beneficial effect of confining the heat ejected by the symmetrical arc-shaped heating frames to a specified area to enhance the heat-removing effect;

[0010] Adjustment racks extending from upper heat-insulating covers are connected to both sides of the arc-shaped heating rack. A hollow fixed pipe is connected to one side of the adjustment rack. A hose is connected between the top of the fixed pipe and the controller. The controller is connected to the arc-shaped heating rack via the hose and the fixed pipe in sequence. The controller is connected to an external gas delivery device. The arc-shaped heating racks on both sides are controlled by the controller to improve synchronization.

[0011] The bottom of both sides of the upper insulation cover are connected to support frames, and the support frames are connected to the bottom of both ends of the arc-shaped insulation board. The arc-shaped insulation board, the upper insulation cover and the two ends of the support frames are provided with lower sliding grooves for adjusting the movement of the frame. The lower sliding grooves improve the stability of the arc-shaped heating frame during movement and avoid interference with the arc-shaped insulation board.

[0012] Preferably, a fixing groove is provided on the top of the adjustment frame, and a connecting piece installed on the outer wall of the upper protective cover is connected to the fixing groove. The connecting piece fixes the adjustment frame to the outer wall of the upper insulation cover. The beneficial effect is that the fixing ability of the arc heating frame is improved after it is adjusted.

[0013] Preferably, the tops of the arc-shaped insulation board and the upper insulation cover are provided with upper sliding grooves, and the top of the arc-shaped heating rack is connected with a connecting rod located in the upper sliding grooves, so as to avoid jamming of the top when the arc-shaped heating rack is moved.

[0014] Preferably, the top of the upper heat-insulating cover is connected to a guide frame, the top of the connecting rod is connected to a slider, and the slider is slidably connected to the guide frame. The slider slides on the guide frame, thereby improving the stability of the arc heating frame during movement.

[0015] Preferably, cover plates are connected to both sides of the arc-shaped heating rack, and the outer annular surface of the cover plates fits with the inner annular surface of the arc-shaped insulation plate, which has the beneficial effect of preventing heat from leaking out from the gap.

[0016] Preferably, a lower insulation cover is provided below the upper insulation cover, the lower insulation cover is filled with an insulation layer, and a roller is rotatably connected to the insulation layer. The beneficial effect is that the cooperation between the upper insulation cover and the lower insulation cover can increase the insulation capacity of the continuous casting billet and facilitate the transportation of the continuous casting billet.

[0017] Preferably, a rotation groove and a reflection groove are provided in the insulation layer, and the roller is rotatably connected to the rotation groove. The beneficial effect is that the rotation groove can prevent the roller from contacting the insulation layer when rotating.

[0018] Preferably, the reflecting groove is located below the symmetrically arranged arc-shaped heating frame. The beneficial effect is that the reflecting groove located at the bottom of the arc-shaped heating frame can reflect heat toward the continuous casting billet, thereby avoiding heat dispersion.

[0019] Preferably, both ends of the upper heat-insulating cover are connected with end covers, and the bottom of the end covers is provided with holes for the continuous casting billet to pass through. The beneficial effect is that it is used to seal both ends of the upper heat-insulating cover to avoid heat leakage from both ends.

[0020] Preferably, both sides of the bottom of the support frame are provided with matching grooves that match the rotating shafts on both sides of the roller, which has the beneficial effect of improving the fitting ability when the upper insulation cover and the lower insulation cover are connected.

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

[0022] 1. This device is equipped with symmetrical arc-shaped heating rack components in the upper insulation cover. Through the convection injection of the two arc-shaped heating racks, the generated heat can be concentrated in the designated area, which has the function of guiding the heat to reduce the heat dispersion, thereby improving the heat supply capacity of the continuous casting billet and increasing the heating efficiency.

[0023] 2. This device can adjust the heating area by setting position adjustment structures at both ends of the arc-shaped heating frame to expand or reduce the heating area. When reducing, the heating efficiency can be improved, and when expanding, the heating area can be increased, which is convenient for corresponding adjustments according to usage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the arc-shaped heating rack and the arc-shaped insulation board in the utility model;

[0026] Figure 3 It is a schematic diagram of the structure of the upper insulation cover and the lower insulation cover in the utility model;

[0027] Figure 4 It is a schematic diagram of the heating structure in the present invention.

[0028] Reference numerals:

[0029] 101. Upper insulation cover; 102. Heating structure; 103. Arc-shaped insulation board; 104. Arc-shaped heating frame; 105. Controller; 106. Adjustment frame; 107. Fixed pipe; 108. Hose; 109. Support frame; 110. Lower sliding groove; 111. Fixed groove; 112. Connecting piece; 113. Upper sliding groove; 114. Connecting rod; 115. Guide frame; 116. Slider; 117. Covering plate; 118. Lower insulation cover; 119. Insulation layer; 120. Roller; 121. Rotating groove; 122. Reflection groove; 123. End cover; 124. Matching groove. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figure 1-4 The continuous casting billet heat preservation and heating structure includes an upper heat preservation cover 101 and a heating structure 102 fixed on the upper heat preservation cover 101. The heating structure 102 is located on the upper heat preservation cover 101 and is used to heat the continuous casting billet in the upper heat preservation cover 101. The upper heat preservation cover 101 is connected with an arc-shaped heat preservation plate 103. Compared with the square heat preservation plate, the arc-shaped heat preservation plate 103 can avoid the situation of heat accumulation at an angle, thereby reflecting the heat toward the continuous casting billet. The heating structure 102 includes symmetrically arranged inner sides of the arc-shaped heat preservation plate 103. The arc-shaped heating rack 104 and the controller 105 located on the side wall of the upper heat-insulating cover 101 are used to connect to the external gas supply device. At the same time, a gas leak detection device is provided on it to detect when a leak occurs. The nozzles of the symmetrical arc-shaped heating racks 104 are arranged facing each other. The two arc-shaped heating racks 104 are arranged facing each other. The heat ejected will converge on the surface of the continuous casting billet, thereby supplementing the heat of the continuous casting billet, which has the effect of guiding the heat to one side and preventing the heat from moving to the two sides.

[0032] When in use, the position between the two arc-shaped heating racks 104 is fixed, so that the heating area is also fixed and cannot be expanded or reduced according to the use situation. The following provides a structure that can increase or reduce the heating area: Figure 2 and Figure 4, both sides of the arc-shaped heating frame 104 are connected with adjustment frames 106 extending from the upper insulation cover 101, and the adjustment frames 106 are located on both sides of the arc-shaped heating frame 104. The position of the arc-shaped heating frame 104 can be changed by adjusting the position of the adjustment frames 106. A hollow fixed pipe 107 is connected to one side of the adjustment frame 106. A hose 108 is connected between the top of the fixed pipe 107 and the controller 105. The fixed pipe 107 and the hose 108 are used to transport combustible gas to the arc-shaped heating frame 104. The controller 105 is connected to the arc-shaped heating frame 104 through the hose 108 and the fixed pipe 107 in turn. The controller 105 is connected to the external gas delivery device, and the arc-shaped heating frame 104 is controlled by the controller 105 to perform a supplementary heating action;

[0033] When adjusting the positions of the two arc-shaped heating racks 104, the arc-shaped insulation board 103 will affect them. The following provides a structure that can avoid interference: Figure 2 The bottom of both sides of the upper insulation cover 101 are connected with support frames 109, and the support frames 109 are connected to the bottom of both ends of the arc-shaped insulation board 103. The support frames 109 play a supporting role and are used to fix the arc-shaped insulation board 103 in the upper insulation cover 101. The arc-shaped insulation board 103, the upper insulation cover 101 and the support frames 109 are provided with lower sliding grooves 110 for adjusting the movement of the frame 106. The width of the lower sliding groove 110 is greater than the width of the adjustment frame 106 to facilitate the adjustment of the position of the arc-shaped heating frame 104.

[0034] After adjusting the distance between the two arc-shaped heating racks 104, if they are not fixed, their stability will be affected. The following provides a structure that can fix the arc-shaped heating racks 104 after they are moved: Figure 2 Specifically, a fixing groove 111 is provided at the top of the adjustment frame 106. Preferably, more than one fixing groove 111 is provided and they are arranged in parallel to improve the stability of the arc-shaped heating frame 104 during movement. A connecting piece 112 installed on the outer wall of the upper protective cover is connected to the fixing groove 111. The connecting piece 112 fixes the adjustment frame 106 to the outer wall of the upper thermal insulation cover 101.

[0035] Since the arc heating rack 104 is arc-shaped, when the arc heating rack 104 is driven to move by the adjustment racks 106 on both sides, the top may get stuck. The following structure is provided to increase the stability during movement: Figure 2 and Figure 4 Specifically, an upper sliding groove 113 is opened on the top of the arc-shaped insulation board 103 and the upper insulation cover 101. The width of the upper sliding groove 113 is the same as that of the lower sliding groove 110. The connecting rod 114 moves in the upper sliding groove 113 to ensure the stability of the top of the arc-shaped heating rack 104. The top of the arc-shaped heating rack 104 is connected with the connecting rod 114 located in the upper sliding groove 113.

[0036] refer to Figure 2 Specifically, the top of the upper insulation cover 101 is connected to a guide frame 115, which is composed of a guide rod and a support seat. The connecting rod 114 moves on the guide rod through a slider 116 to improve the stability of the top of the arc heating rack 104 when it moves. The top of the connecting rod 114 is connected to a slider 116, which is slidably connected to the guide frame 115. When the adjustment frames 106 at both ends are moved, the top of the arc heating rack 104 will move on the guide frame 115 through the slider 116 to improve stability during movement.

[0037] When the arc-shaped heating rack 104 moves, the lower sliding grooves 110 on both sides and the upper sliding groove 113 on the top will be exposed, which will cause heat leakage. The following provides a structure to prevent heat leakage: Figure 3 and Figure 4 Specifically, covering plates 117 are connected to both sides of the arc-shaped heating rack 104. When the arc-shaped heating rack 104 moves to the end, the covering plates 117 can cover the upper sliding groove 113 and the lower sliding groove 110 to prevent heat loss. The outer ring surface of the covering plate 117 fits with the inner ring surface of the arc-shaped insulation plate 103.

[0038] The following provides a structure for supporting and keeping the continuous casting billet warm; Figure 1 and Figure 3 Specifically, a lower insulation cover 118 is provided below the upper insulation cover 101, and the lower insulation cover 118 is filled with an insulation layer 119. Through the upper and lower settings of the arc-shaped heating frame 104 and the insulation layer 119, the middle continuous casting billet can be clamped, thereby improving its insulation capacity. A roller 120 is rotatably connected in the insulation layer 119, and the roller 120 is used to transport the continuous casting billet.

[0039] refer to Figure 1 and Figure 3 Specifically, a rotating groove 121 and a reflecting groove 122 are provided in the insulation layer 119. The reflecting groove 122 is preferably arc-shaped and is used to reflect the heat generated by the combustible gas toward the continuous casting billet to prevent the heat from dissipating. The roller 120 is rotatably connected to the rotating groove 121.

[0040] refer to Figure 1 and Figure 3 Specifically, the reflection groove 122 is located below the symmetrically arranged arc heating rack 104, and the length of the reflection groove 122 is greater than the length of the two arc heating racks 104 when they are located at the farthest end, so as to prevent the reflection groove 122 from being too short and the heat from not being reflected to the continuous casting billet.

[0041] refer to Figure 1Specifically, the two ends of the upper insulation cover 101 are connected to the end covers 123. The end covers 123 cover the two ends of the upper insulation cover 101 to prevent heat from leaking out from both sides. The bottom hole should be larger than the continuous casting billet passing through. The bottom of the end cover 123 is provided with a hole for the continuous casting billet to pass through.

[0042] refer to Figure 2 Specifically, matching grooves 124 are provided on both sides of the bottom of the support frame 109 to match the rotating shafts on both sides of the roller 120. Since the roller 120 needs the support of the bearing seat when rotating, corresponding matching grooves 124 are provided on both sides of the support frame 109 so that the upper insulation cover 101 can be well covered on the lower sliding groove 110.

[0043] In this embodiment, when in use, the upper insulation cover 101 will cover the top of the lower insulation cover 118, and the continuous casting billet will pass between the lower insulation cover 118 and the upper insulation cover 101. The roller 120 is used to transport the continuous casting billet. When the continuous casting billet needs to be reheated, the controller 105 supplies combustible gas to the symmetrical arc-shaped heating racks 104. The symmetrical arc-shaped heating racks 104 are arranged opposite to each other to gather heat in a designated area to improve the heating efficiency. When the heating area needs to be adjusted, the connector 112 is loosened to adjust the distance between the two arc-shaped heating racks 104, thereby adjusting the heating area.

[0044] 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. The continuous casting billet heat preservation and heat supplement structure is characterized by: The invention comprises an upper heat-insulating cover (101) and a heating structure (102) fixed on the upper heat-insulating cover (101), wherein the upper heat-insulating cover (101) is connected with an arc-shaped heat-insulating plate (103), and the heating structure (102) comprises an arc-shaped heating frame (104) symmetrically arranged on the inner side of the arc-shaped heat-insulating plate (103) and a controller (105) located on the side wall of the upper heat-insulating cover (101), and the nozzles of the symmetrical arc-shaped heating frame (104) are arranged facing each other; Adjustment racks (106) extending from the upper heat-insulating cover (101) are connected to both sides of the arc-shaped heating rack (104); a hollow fixed pipe (107) is connected to one side of the adjustment rack (106); a hose (108) is connected between the top of the fixed pipe (107) and the controller (105); the controller (105) is connected to the arc-shaped heating rack (104) via the hose (108) and the fixed pipe (107) in sequence; and the controller (105) is connected to an external gas delivery device; The bottoms of both sides of the upper heat-insulating cover (101) are connected to support frames (109), and the support frames (109) are connected to the bottoms of both ends of the arc-shaped heat-insulating plate (103). The arc-shaped heat-insulating plate (103), the upper heat-insulating cover (101) and the support frames (109) are provided with lower sliding grooves (110) for adjusting the frame (106) to move.

2. The continuous casting billet heat preservation and heat supplement structure according to claim 1, characterized in that: A fixing groove (111) is provided on the top of the adjustment frame (106), and a connecting piece (112) installed on the outer wall of the upper protective cover is connected to the fixing groove (111). The connecting piece (112) fixes the adjustment frame (106) to the outer wall of the upper thermal insulation cover (101).

3. The continuous casting billet heat preservation and heat supplement structure according to claim 1, characterized in that: An upper sliding groove (113) is provided on the top of the arc-shaped heat-insulating plate (103) and the upper heat-insulating cover (101), and a connecting rod (114) located in the upper sliding groove (113) is connected to the top of the arc-shaped heating frame (104).

4. The continuous casting billet heat preservation and heat supplement structure according to claim 3, characterized in that: The top of the upper heat-insulating cover (101) is connected to a guide frame (115), the top of the connecting rod (114) is connected to a slider (116), and the slider (116) is slidably connected to the guide frame (115).

5. The continuous casting billet heat preservation and heat supplement structure according to claim 1, characterized in that: Covering plates (117) are connected to both sides of the arc-shaped heating frame (104), and the outer annular surface of the covering plate (117) is in contact with the inner annular surface of the arc-shaped heat-insulating plate (103).

6. The continuous casting billet heat preservation and heat supplement structure according to claim 1, characterized in that: A lower heat-insulating cover (118) is provided below the upper heat-insulating cover (101), a heat-insulating layer (119) is filled in the lower heat-insulating cover (118), and a roller (120) is rotatably connected in the heat-insulating layer (119).

7. The continuous casting billet heat preservation and heat supplement structure according to claim 6, characterized in that: A rotating groove (121) and a reflecting groove (122) are provided in the heat-insulating layer (119), and the roller (120) is rotatably connected to the rotating groove (121).

8. The continuous casting billet heat preservation and heat supplement structure according to claim 7, characterized in that: The reflecting groove (122) is located below the symmetrically arranged arc-shaped heating frame (104).

9. The continuous casting billet heat preservation and heat supplement structure according to claim 1, characterized in that: Both ends of the upper heat-insulating cover (101) are connected to end covers (123), and a hole for the continuous casting billet to pass through is opened at the bottom of the end cover (123).

10. The continuous casting billet heat preservation and heat supplement structure according to claim 1, characterized in that: Matching grooves (124) matching with the rotating shafts on both sides of the roller (120) are provided on both sides of the bottom of the support frame (109).

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