Thermal insulation structure, system and method based on torpedo ladle

Abstract

The invention provides a heat preservation structure, system and method based on a torpedo ladle, the heat preservation structure based on the torpedo ladle comprises a supporting frame and a heat preservation layer, the supporting frame is horizontally arranged, the shape of the supporting frame is consistent with that of a ladle opening of the torpedo ladle, the heat preservation layer is horizontally arranged, and the shape of the heat preservation layer is consistent with that of the supporting frame; the heat preservation layer is installed on the supporting frame in a shape-matched mode. The invention further discloses a thermal insulation system based on the torpedo ladle. The thermal insulation system comprises the torpedo ladle and the thermal insulation structure based on the torpedo ladle. Finally, the invention discloses a thermal insulation method based on the torpedo ladle, and the thermal insulation structure based on the torpedo ladle is applied to the thermal insulation method. According to the device, the heat preservation effect can be achieved in the torpedo ladle, the temperature in the torpedo ladle cannot be greatly reduced, and therefore the temperature of molten iron can meet the steelmaking requirement; in addition, in rainy and snowy weather, the temperature drop in the torpedo ladle cannot be increased by times, and masonry in the torpedo ladle is prevented from bursting, so that the personal safety of workers near the torpedo ladle is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of torpedo ladle heat preservation, and particularly to a heat preservation structure, system and method based on a torpedo ladle. Background Art

[0002] At present, most of the hot metal transportation in blast furnaces is carried out by torpedo ladles (a torpedo ladle can store about 300t of hot metal when fully loaded). After the torpedo ladle full of hot metal is transported to the steel mill, it generally takes about 60 minutes to return from the steel mill to under the blast furnace to receive hot metal. Sometimes, due to waiting under the blast furnace and slag removal for the torpedo ladle, this transportation time will be extended. During the transportation and waiting process of the torpedo ladle, the temperature drop per hour is about 15°C in summer and about 30°C in winter. The temperature drop of the torpedo ladle will cause a significant temperature drop of the hot metal therein, making the temperature of the hot metal unable to meet the requirements of steelmaking. In addition, the significant temperature drop of the torpedo ladle will affect the service life of the torpedo ladle (refractory). In case of rain or snow weather, not only will the temperature drop of the torpedo ladle during transportation increase exponentially, but the rain or snow entering the torpedo ladle may also cause the explosion of the masonry inside the torpedo ladle, resulting in explosion shock and threatening the personal safety of the workers near the torpedo ladle. Summary of the Invention

[0003] In view of the above-mentioned technical problems, a heat preservation structure, system and method based on a torpedo ladle are provided.

[0004] The technical means adopted by the present invention are as follows:

[0005] In a first aspect, a heat preservation structure based on a torpedo ladle includes a support frame and a heat preservation layer; the support frame is horizontally arranged and has a shape consistent with that of the ladle opening of the torpedo ladle; the heat preservation layer is horizontally arranged and has a shape consistent with that of the support frame, and the heat preservation layer is adaptively installed on the support frame.

[0006] Further, the support frame includes an outer frame and an inner support; the outer frame is horizontally arranged and has a shape consistent with that of the ladle opening of the torpedo ladle; the inner support includes a plurality of support ends, the inner support is located inside the outer frame, and the plurality of support ends are all installed on the inner side wall of the outer frame; the heat preservation layer is adaptively installed on the outer frame.

[0007] Further, the inner support includes a plurality of inner support rods; the inner support rods are horizontally arranged and have a length equal to the inner diameter of the outer frame; one end of each inner support rod is a support rod connection end, and the support rod connection ends of the plurality of inner support rods are connected together; the number of support ends is the same as and corresponds to that of the inner support rods one by one, and the support end is the end of the inner support rod far from the support rod connection end.

[0008] Further, the material of the heat preservation layer is a heat insulation material.

[0009] In a second aspect, a torpedo ladle-based heat preservation system includes a torpedo ladle. The torpedo ladle includes a ladle body, and a ladle opening communicating with the inside of the ladle is formed on the top surface of the ladle body. The ladle opening is horizontally arranged and has a circular shape. The system further includes a torpedo ladle-based heat preservation structure according to any one of the first aspect; the outer frame in the torpedo ladle-based heat preservation structure is adaptively installed on the ladle opening.

[0010] In a third aspect, a torpedo ladle-based heat preservation method applies a torpedo ladle-based heat preservation structure according to any one of the first aspect, and includes the following steps:

[0011] After the torpedo ladle is emptied of hot metal, the outer frame is adaptively installed on the ladle opening of the torpedo ladle; when the torpedo ladle receives hot metal, the outer frame is adaptively installed on the ladle opening of the torpedo ladle.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. In the present invention, the outer frame is adaptively installed on the ladle opening of the torpedo ladle. At this time, the heat preservation layer covers the ladle opening of the torpedo ladle, playing a role in heat preservation for the inside of the torpedo ladle, so that there will be no significant temperature drop inside the torpedo ladle, and thus the temperature of the hot metal can meet the requirements of steelmaking; in addition, in case of rain or snow weather, the temperature drop inside the torpedo ladle will not increase exponentially, avoiding the bursting of the masonry inside the torpedo ladle, and thus ensuring the personal safety of the workers near the torpedo ladle.

[0014] 2. In the present invention, the outer frame is used to support the heat preservation layer, so that the heat preservation layer can be adapted to the ladle opening of the torpedo ladle. At the same time, the internal support can support the outer frame to prevent the outer frame from deforming due to external pressure.

[0015] 3. In the present invention, after the torpedo ladle is emptied of hot metal, the outer frame is adaptively installed on the ladle opening of the torpedo ladle. At this time, the heat preservation layer covers the ladle opening of the torpedo ladle, playing a role in heat preservation for the inside of the torpedo ladle; when the torpedo ladle receives hot metal, the outer frame is adaptively installed on the ladle opening of the torpedo ladle, and the heat preservation layer can immediately melt when encountering high-temperature hot metal, without affecting the hot metal receiving operation. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is the top view of a heat preservation structure based on a torpedo ladle in Embodiment 1 of the present invention;

[0018] Figure 2 It is the top view of the heat preservation layer in Embodiment 1 of the present invention;

[0019] Figure 3 It is the top view of the support frame in Embodiment 1 of the present invention;

[0020] Figure 4 It is the front view of a heat preservation structure based on a torpedo ladle in Embodiment 1 of the present invention;

[0021] Figure 5 It is the top view of the torpedo ladle in Embodiment 2 of the present invention;

[0022] Figure 6 It is the front view of a heat preservation system based on a torpedo ladle in Embodiment 2 of the present invention;

[0023] Figure 7 It is the top view of a heat preservation system based on a torpedo ladle in Embodiment 2 of the present invention;

[0024] In the figure: 1 - support frame; 2 - heat preservation layer; 3 - torpedo ladle; 101 - external frame; 102 - internal support; 301 - tank body; 302 - tank opening. Detailed implementation manners

[0025] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restricts the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0028] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for the sake of convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it will not be necessary to discuss it further in subsequent drawings.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present invention: the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0030] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientation of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0031] In addition, it should be noted that the use of words such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without otherwise stating, the above words have no special meaning, and thus cannot be construed as limiting the protection scope of the present invention.

[0032] Example 1:

[0033] As Figures 1 to 4 shown, a heat preservation structure based on a torpedo ladle includes a support frame 1 and a heat preservation layer 2; the support frame 1 is horizontally arranged and has the same shape as the shape of the ladle opening 302 of the torpedo ladle 3; the heat preservation layer 2 is horizontally arranged and has the same shape as the shape of the support frame 1, and the heat preservation layer 2 is adaptively installed on the support frame 1.

[0034] In this embodiment, the support frame 1 includes an outer frame 101 and an inner support 102; the outer frame 101 is horizontally arranged and has the same shape as the shape of the ladle opening 302 of the torpedo ladle 3; the inner support 102 includes a plurality of support ends, the inner support 102 is located inside the outer frame 101, and the plurality of support ends are all installed on the inner side wall of the outer frame 101; the heat preservation layer 2 is adaptively installed on the outer frame 101.

[0035] Specifically, both the outer frame 101 and the inner support 102 are welded by waste iron pipes; the outer frame 101 is a circular ring structure, the outer diameter of the outer frame 101 is 1600 mm, and the ring width of the outer frame 101 is 10 mm.

[0036] In addition, the heat preservation layer 2 is tied to the outer frame 101 by iron wires.

[0037] In this embodiment, the inner support 102 includes a plurality of inner support rods; the inner support rods are horizontally arranged and have the same length as the inner diameter of the outer frame 101; one end of the inner support rod is a support rod connection end, and the support rod connection ends of the plurality of inner support rods are connected together; the number of support ends is the same as that of the inner support rods and they correspond one by one, and the support end is the end of the inner support rod far from the support rod connection end.

[0038] Specifically, four inner support rods are provided, and the included angle between any two inner support rods is 90°.

[0039] In this embodiment, the material of the heat preservation layer 2 is a heat insulation and preservation material.

[0040] Specifically, the radius of the heat preservation layer 2 is 1600 mm and it is cut from waste cloth bags.

[0041] Example 2:

[0042] As Figures 5 to 7As shown in the figure, a torpedo ladle-based thermal insulation system includes a torpedo ladle 3. The torpedo ladle 3 includes a ladle body 301. An opening 302 communicating with the inside of the ladle body 301 is formed on the top surface of the ladle body 301. The opening 302 is horizontally arranged and has a circular shape. It also includes a torpedo ladle-based thermal insulation structure according to any one of Embodiment 1. The outer frame 101 in the torpedo ladle-based thermal insulation structure is adaptively installed on the opening 302 in a shape-matching manner.

[0043] Embodiment 3

[0044] As Figures 1 to 7 shown in the figure, a torpedo ladle-based thermal insulation method applies a torpedo ladle-based thermal insulation structure according to any one of Embodiment 1 and includes the following steps:

[0045] After the torpedo ladle 3 is emptied of hot metal, the outer frame 101 is adaptively installed on the opening 302 of the torpedo ladle 3 in a shape-matching manner. At this time, the thermal insulation layer 2 covers the opening 302 of the torpedo ladle 3, playing a role in insulating the inside of the torpedo ladle 3, so that there will be no significant temperature drop inside the torpedo ladle 3, thereby enabling the temperature of the hot metal to meet the requirements of steelmaking. In addition, in rainy or snowy weather, the temperature drop inside the torpedo ladle 3 will not increase exponentially, avoiding the bursting of the masonry inside the torpedo ladle 3, and thus ensuring the personal safety of the workers near the torpedo ladle 3. When the torpedo ladle 3 receives hot metal, the outer frame 101 is adaptively installed on the opening 302 of the torpedo ladle 3 in a shape-matching manner. The thermal insulation layer 2 can immediately melt when encountering high-temperature hot metal, without affecting the hot metal receiving operation.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thermal insulation structure based on a torpedo tank, characterized in that: It comprises a support frame (1) and a thermal insulation layer (2); The support frame (1) is arranged horizontally and its shape is consistent with the shape of the tank mouth (302) of the torpedo tank (3); The thermal insulation layer (2) is arranged horizontally and its shape is consistent with the shape of the support frame (1); the thermal insulation layer (2) is mounted on the support frame (1) in a shape-fitting manner.

2. A thermal insulation structure based on a torpedo tank according to claim 1, characterized in that: The support frame (1) comprises an external frame (101) and an internal support (102); The outer frame (101) is arranged horizontally and its shape is consistent with the shape of the tank mouth (302) of the torpedo tank (3); The internal support (102) comprises a plurality of support ends, the internal support (102) is located inside the external frame (101), and the plurality of support ends are all mounted on the inner side wall of the external frame (101); The thermal insulation layer (2) is mounted on the external frame (101) in a shape-fitting manner.

3. A thermal insulation structure based on a torpedo tank according to claim 2, characterized in that: The internal support (102) includes a plurality of internal support rods; The inner support rod is arranged horizontally and its length is equal to the inner diameter of the outer frame (101); One end of the internal support rod is a support rod connecting end, and the support rod connecting ends of the plurality of internal support rods are connected together; The number of the support ends is consistent with that of the internal support rods and they correspond one to one. The support end is an end of the internal support rod away from the connection end of the support rod.

4. The thermal insulation structure based on a torpedo tank according to claim 1, characterized in that: The material of the thermal insulation layer (2) is a heat insulating material.

5. A heat preservation system based on a torpedo tank, comprising a torpedo tank (3), wherein the torpedo tank (3) comprises a tank body (301), a tank opening (302) communicating with the tank body (301) is provided on the top surface of the tank body (301), the tank opening (302) is horizontally arranged and has a circular shape, and is characterized in that: It also includes a torpedo-based insulation structure as described in any one of claims 1 to 4; The outer frame (101) in the torpedo-based thermal insulation structure is mounted on the tank mouth (302) in a shape-fitting manner.

6. A method for heat preservation based on a torpedo tank, using a heat preservation structure based on a torpedo tank as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: After the torpedo tank (3) is cleaned of molten iron, the outer frame (101) is mounted on the tank mouth (302) of the torpedo tank (3) in a shape-fitting manner; When the torpedo tank (3) is connected to the iron, the outer frame (101) is mounted on the tank mouth (302) of the torpedo tank (3) in a shape-fitting manner.

Images