Heat compensation device of heat preservation box

Abstract

The utility model discloses a heat compensation device of a heat preservation box, which relates to the technical field of heat compensation devices and comprises an upper heat preservation cover and a lower heat preservation cover, a heat preservation layer is filled in the lower heat preservation cover, a heating groove and a roller groove are arranged in the heat preservation layer, a conveying wheel is rotatably connected in the roller groove, a lower heating ring is connected in the heating groove, and the lower heating ring is connected with the roller groove. The upper heat preservation cover is internally connected with an arc-shaped heat preservation plate, the outer wall of the upper heat preservation cover is connected with a fuel gas supply device, the arc-shaped heat preservation plate is internally connected with an upper heating ring corresponding to the lower heating ring, and the upper heating ring is connected with the fuel gas supply device. According to the heat compensation device of the heat preservation box, the peripheral area of a continuous casting billet can be heated through the lower heating ring and the upper heating ring, the conditions that heat at the bottom of the continuous casting billet is lost fast and temperature difference occurs are avoided, and the effect of improving the temperature compensation effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat supplement device technical field more specifically relates to a heat supplement device of heat preservation box. BACKGROUND

[0002] Continuous casting billet heat preservation box is a kind of equipment for keeping the temperature of continuous casting billet in the process of steel production.In the process of steel manufacturing, continuous casting is a kind of continuous casting method that liquid metal is directly poured into a certain shape. After the continuous casting billet comes out from the casting machine, there can be a large temperature difference between its surface and interior, and the temperature is relatively high. In order to ensure the quality and efficiency of subsequent processing, the continuous casting billet needs to be properly heat treated to reduce the temperature difference, prevent cracks and prepare conditions for the next rolling or other hot processing.

[0003] The Chinese patent with application number 201721698823.1 discloses a continuous casting billet online heat storage type heat supplement device. The structure includes a roller way, 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 the heat storage type heating units are installed in the upper heat preservation cover. The upper heat preservation cover is placed on the upper part of the roller way, and the lower heat preservation cover is fixed on the lower part of the roller way. The upper heat preservation cover, the lower heat preservation cover and the roller way 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 a heat preservation layer. This continuous casting billet online heat storage type heat supplement device is provided with a heating device at the top of the upper heat preservation cover to heat the continuous casting billet, so that it can be kept at a certain temperature for subsequent processing. However, the following problems still exist during use:

[0004] 1. After the continuous casting billet comes out from the casting machine, it needs to be transported through the roller at the bottom. Since the roller is usually made of high-temperature resistant metal, the temperature of the continuous casting billet will be transferred to the roller through heat transfer, causing heat loss. Although a gas heating device is provided in the upper protective cover, the heating device is usually arranged at the top and cannot heat the bottom well, resulting in temperature difference.

[0005] 2. Although some heat preservation devices are provided with heating devices at the bottom, the upper cover at the top needs to be opened for maintenance, so it is not convenient to arrange the upper and lower heating devices together. The heating device at the bottom needs to be controlled separately, which is very cumbersome.

[0006] Therefore, it is necessary to propose a heat supplement device of heat preservation box to solve the above problems. UTILITY MODEL CONTENTS

[0007] To address the above problems, this utility model provides a heat replenishment device for an insulated box; it has the function of achieving ring heating to improve the heating capacity of the continuously cast billet, and at the same time improves the sealing capacity during connection to avoid leakage.

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] A heat replenishment device for an insulated box includes an upper insulated cover and a lower insulated cover. The lower insulated cover is filled with an insulation layer. A heating groove and a roller groove are formed in the insulation layer. A conveying wheel is rotatably connected in the roller groove. A lower heating ring is connected in the heating groove. An arc-shaped insulation plate is connected in the upper insulated cover. A gas supply device is connected to the outer wall of the upper insulated cover. An upper heating ring corresponding to the lower heating ring is connected in the arc-shaped insulation plate. The upper heating ring and the gas supply device are connected.

[0010] The bottom of the gas supply device is connected to an upper connecting pipe, and the outer wall of the lower insulation cover is connected to a lower connecting pipe that cooperates with the lower heating ring. The upper connecting pipe can be inserted into the lower connecting pipe.

[0011] The inner ring surfaces of the upper and lower heating rings are provided with jet nozzles. The gas supply device is connected to an external heating gas device. A combustible gas leak detection device is connected to the gas supply device.

[0012] Preferably, an upper limit plate is connected to the outer wall of the upper connecting pipe, and an upper sliding pipe is slidably connected to the bottom of the outer wall of the upper connecting pipe. The upper sliding pipe and the upper limit plate are connected by a spring. A first vent hole is opened at the bottom of the outer wall of the upper connecting pipe, and the upper sliding pipe is covered on the first vent hole.

[0013] Preferably, the lower connecting tube is internally connected to a central tube, the bottom of the outer wall of the central tube is provided with a third vent hole, the outer wall of the central tube is slidably connected to a lower sliding tube, the lower sliding tube and the central tube are connected by a spring, the outer wall of the lower sliding tube is connected to a sealing plate covering the top opening of the lower connecting tube, and the bottom of the lower sliding tube is provided with a fourth vent hole that cooperates with the third vent hole.

[0014] Preferably, a fixing plate is connected to the inner wall of the upper connecting pipe, and an inner sliding pipe is slidably connected to the inner ring surface of the fixing plate. Second vent holes are opened at the upper and lower ends of the inner sliding pipe, and a base plate is connected to the bottom of the inner sliding pipe. The base plate and the fixing plate are connected by a spring.

[0015] Preferably, the top of the inner sliding tube is connected to a top plate, and the bottom of the upper connecting tube is connected to a lower limiting plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This device is equipped with a lower heating ring and an upper heating ring inside the upper and lower insulation covers. The lower heating ring and the upper heating ring can form a circle, thereby heating the surrounding area of ​​the continuously cast billet and preventing the rapid loss of heat at the bottom of the continuously cast billet, which would cause a temperature difference. This has the effect of improving the heat compensation effect.

[0018] 2. This device is equipped with upper and lower connecting pipes on both sides of the upper and lower insulation covers. Through the connection of the upper and lower connecting pipes, when the upper heating ring delivers combustible gas, the gas can be delivered to the lower heating ring at the bottom, thereby realizing the synchronous heating of the lower and upper heating rings and improving the heat replenishment capacity of the continuous casting billet. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 This is a cross-sectional view of the present invention;

[0021] Figure 3 This is a schematic diagram of the upper connecting pipe in this utility model;

[0022] Figure 4 This is a schematic diagram of the lower connecting pipe in this utility model;

[0023] Figure 5 This is a schematic diagram of the flow of combustible gas in this utility model.

[0024] Figure label:

[0025] 101. Upper insulation cover; 102. Lower insulation cover; 103. Insulation layer; 104. Heating groove; 105. Roller groove; 106. Conveyor wheel; 107. Lower heating ring; 108. Arc-shaped insulation board; 109. Gas supply device; 110. Upper heating ring; 111. Upper connecting pipe; 112. Lower connecting pipe; 113. Upper limit plate; 114. Upper sliding pipe; 115. Spring; 116. First vent; 117. Central pipe; 118. Third vent; 119. Lower sliding pipe; 120. Sealing plate; 121. Fourth vent; 122. Fixing plate; 123. Inner sliding pipe; 124. Second vent; 125. Base plate; 126. Top plate; 127. Lower limit plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 A heat replenishment device for an insulated box includes an upper insulated cover 101 and a lower insulated cover 102. In use, the upper insulated cover 101 covers the lower insulated cover 102. A continuously cast billet moves along a conveyor wheel 106 at the top of the insulated layer 103. The lower insulated cover 102 is filled with the insulated layer 103. The insulated layer 103 and the arc-shaped insulated plate 108 are made of a material with heat-insulating capabilities. A heating groove 104 and a roller groove 105 are formed within the insulated layer 103. The roller groove 105 is larger than the conveyor wheel 106 to facilitate the rotation of the conveyor wheel 106. The conveyor wheel 106 is rotatably connected within the roller groove 105. A lower heating ring 107 is connected within the heating groove 104. The upper insulated cover 101 is connected to... An arc-shaped insulation plate 108 is attached. Compared with the traditional square insulation plate, the arc-shaped insulation plate 108 can avoid heat accumulation at the corners and improve the heat reflection capability. A gas supply device 109 is connected to the outer wall of the upper insulation cover 101. An upper heating ring 110 corresponding to the lower heating ring 107 is connected inside the arc-shaped insulation plate 108. The lower heating ring 107 and the upper heating ring 110 correspond to each other. When the continuous casting billet is square, the shape of the lower heating ring 107 and the upper heating ring 110 is preferably circular. When the continuous casting billet is rectangular, the shape of the lower heating ring 107 and the upper heating ring 110 is preferably elliptical. The upper heating ring 110 is connected to the gas supply device 109.

[0028] Since the upper insulation cover 101 needs to move up and down, if the lower heating ring 107 and the upper heating ring 110 are connected by a flexible hose, the hose will be too long, which will not only increase production costs, but also cause the loose hose to affect other equipment. The following provides a structure that allows the gas supply pipes of the lower heating ring 107 and the upper heating ring 110 to be connected together when the upper insulation cover 101 is placed on top of the lower insulation cover 102: (Reference) Figure 1 and Figure 2 The bottom of the gas supply device 109 is connected to an upper connecting pipe 111, and the outer wall of the lower insulation cover 102 is connected to a lower connecting pipe 112 that cooperates with the lower heating ring 107. The two pipes are connected by inserting the upper connecting pipe 111 into the lower connecting pipe 112 so that combustible gas can be delivered into the lower heating ring 107 and the upper connecting pipe 111 can be inserted into the lower connecting pipe 112.

[0029] Because heating is performed using combustible gas, gas leaks can occur over prolonged use. The following is a structure that can promptly detect combustible gas leaks: [Reference] Figure 1 and Figure 2 The upper heating ring 110 and the lower heating ring 107 have air jets on their inner ring surfaces. The gas supply device 109 is connected to an external heating gas device. A combustible gas leak detection device is connected to the gas supply device 109. The combustible gas leak detection device can detect leaked combustible gas in a timely manner, thereby reminding the user to take appropriate action.

[0030] The following provides the specific structure of the upper connecting pipe 111 for connection with the lower connecting pipe 112: (Refer to...) Figure 3 Specifically, an upper limit plate 113 is connected to the outer wall of the upper connecting pipe 111, and an upper sliding pipe 114 is slidably connected to the bottom of the outer wall of the upper connecting pipe 111. The upper sliding pipe 114 can move up and down on the outer wall of the upper connecting pipe 111, thereby covering the first vent hole 116 on the outer wall to prevent the leakage of internal combustible gas. The upper sliding pipe 114 and the upper limit plate 113 are connected by a spring 115. The bottom of the outer wall of the upper connecting pipe 111 has a first vent hole 116. When the first vent hole 116 is exposed, the internal combustible gas will flow outward and enter the lower connecting pipe 112. The upper sliding pipe 114 covers the first vent hole 116. A bottom plate 125 is provided inside the upper connecting pipe 111, and the bottom plate 125 is used to seal the bottom of the upper connecting pipe 111.

[0031] The following provides a specific structure for the lower connecting pipe 112: (Refer to...) Figure 4Specifically, the lower connecting pipe 112 is internally connected to a central pipe 117. The central pipe 117 is hollow, sealed at the top, and has a third vent hole 118 on its bottom outer wall. A lower sliding pipe 119 is slidably connected to the outer wall of the central pipe 117. The lower sliding pipe 119 moves up and down along the central pipe 117. When it reaches the top, it seals the opening at the top of the lower connecting pipe 112 through a sealing plate 120. The lower sliding pipe 119 and the central pipe 117 are connected by a spring 115. The outer wall of the lower sliding pipe 119 is connected to... A sealing plate 120 covers the top opening of the lower connecting pipe 112. The bottom of the lower sliding pipe 119 has a fourth vent 121 that cooperates with the third vent 118. When the lower sliding pipe 119 moves to the bottom of the central pipe 117, the third vent 118 and the fourth vent 121 overlap to facilitate the passage of combustible gas. When the upper connecting pipe 111 and the lower connecting pipe 112 are connected, the central pipe 117 pushes the inner sliding pipe 123 to move upward. The top of the lower connecting pipe 112 is used to push the upper sliding pipe 114 to move upward. At this time, the lower sliding pipe 119 receives a reaction force and moves downward.

[0032] The following provides a structure to increase the protection capability of the upper connecting pipe 111 against flammable gases, preventing the upper sliding pipe 114 from getting stuck on the outer wall of the upper connecting pipe 111 and causing flammable gas leakage: Reference Figure 3 Specifically, a fixing plate 122 is connected to the inner wall of the upper connecting pipe 111. An inner sliding pipe 123 is slidably connected to the inner annular surface of the fixing plate 122. The inner sliding pipe 123 moves up and down along the fixing plate 122. A top plate 126 is connected to the top, and a bottom plate 125 is connected to the bottom. The bottom plate 125 is slidably connected to the inner wall of the upper connecting pipe 111. Second vent holes 124 are provided at both the upper and lower ends of the inner sliding pipe 123. When the inner sliding pipe 123 is at the bottom, the second vent holes 124 at both ends are open. Both are located at the bottom of the fixed plate 122, thus blocking the airflow channel. When moved to the top, the second vents 124 at both ends will be located at the upper and lower ends of the fixed plate 122, allowing combustible gas to pass through. The bottom of the inner sliding tube 123 is connected to the base plate 125. The base plate 125 and the fixed plate 122 are connected by a spring 115 and reset by the spring 115. Combustible gas can only flow when both the upper sliding tube 114 and the inner sliding tube 123 are moved to the top.

[0033] Specifically, the top of the inner sliding tube 123 is connected to a top plate 126, and the bottom of the upper connecting tube 111 is connected to a lower limiting plate 127. The lower limiting plate 127 is used to prevent the upper sliding tube 114 from sliding off the outer wall of the upper connecting tube 111.

[0034] In this embodiment, during use, the upper insulation cover 101 covers the top of the lower insulation cover 102. The internal conveying wheel 106 is used to convey the continuous casting billet. When the temperature of the continuous casting billet is too low, it can be heated by the lower heating ring 107 and the upper heating ring 110. The annular heating area formed by the lower heating ring 107 and the upper heating ring 110 can uniformly heat the surrounding area of ​​the continuous casting billet, preventing the bottom temperature of the continuous casting billet from easily escaping. When the upper insulation cover 101 is opened upwards, it is convenient for maintenance. When the upper insulation cover 101 is moved downwards, the upper connecting pipe 111 is inserted into the lower connecting pipe 112, which makes the upper connecting pipe 111 and the lower connecting pipe 112 connected, so that the combustible gas in the gas supply device 109 can supply the lower heating ring 107. The flow state of the combustible gas is referenced. Figure 5 .

[0035] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A heat replenishment device for an insulated box, comprising an upper insulated cover (101) and a lower insulated cover (102), characterized in that: The lower insulation cover (102) is filled with an insulation layer (103). The insulation layer (103) has a heating groove (104) and a roller groove (105). A conveyor wheel (106) is rotatably connected in the roller groove (105). A lower heating ring (107) is connected in the heating groove (104). An arc-shaped insulation plate (108) is connected in the upper insulation cover (101). A gas supply device (109) is connected on the outer wall of the upper insulation cover (101). An upper heating ring (110) corresponding to the lower heating ring (107) is connected in the arc-shaped insulation plate (108). The upper heating ring (110) and the gas supply device (109) are connected. The bottom of the gas supply device (109) is connected to an upper connecting pipe (111), and the outer wall of the lower insulation cover (102) is connected to a lower connecting pipe (112) that cooperates with the lower heating ring (107). The upper connecting pipe (111) can be inserted into the lower connecting pipe (112).

2. The insulated box reheating device according to claim 1, characterized in that: The inner ring surfaces of the upper heating ring (110) and the lower heating ring (107) are provided with jet nozzles. The gas supply device (109) is connected to an external hot gas device. A combustible gas leakage detection device is connected to the gas supply device (109).

3. The heat replenishment device for an insulated box according to claim 1, characterized in that: An upper limit plate (113) is connected to the outer wall of the upper connecting pipe (111), and an upper sliding pipe (114) is slidably connected to the bottom of the outer wall of the upper connecting pipe (111).

4. The heat replenishment device for an insulated box according to claim 3, characterized in that: The upper sliding tube (114) and the upper limit plate (113) are connected by a spring (115). The bottom of the outer wall of the upper connecting tube (111) is provided with a first vent hole (116), and the upper sliding tube (114) covers the first vent hole (116).

5. The heat replenishment device for an insulated box according to claim 1, characterized in that: The lower connecting pipe (112) is internally connected to a central pipe (117), and a third vent hole (118) is provided at the bottom of the outer wall of the central pipe (117).

6. The insulated box reheating device according to claim 5, characterized in that: The outer wall of the central tube (117) is slidably connected to a lower sliding tube (119), and the lower sliding tube (119) and the central tube (117) are connected by a spring (115).

7. A heat replenishment device for an insulated box according to claim 6, characterized in that: A sealing plate (120) covering the top opening of the lower connecting pipe (112) is connected to the outer wall of the lower sliding tube (119), and a fourth vent (121) that cooperates with the third vent (118) is opened at the bottom of the lower sliding tube (119).

8. A heat replenishment device for an insulated box according to claim 2, characterized in that: A fixing plate (122) is connected to the inner wall of the upper connecting pipe (111), and an inner sliding pipe (123) is slidably connected to the inner ring surface of the fixing plate (122). The upper and lower ends of the inner sliding pipe (123) are provided with second vent holes (124).

9. A heat replenishment device for an insulated box according to claim 8, characterized in that: The bottom of the inner sliding tube (123) is connected to a base plate (125), and the base plate (125) and the fixed plate (122) are connected by a spring (115).

10. A heat replenishment device for an insulated box according to claim 9, characterized in that: The top of the inner sliding tube (123) is connected to a top plate (126), and the bottom of the upper connecting tube (111) is connected to a lower limiting plate (127).

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