Blast furnace cooling stave replacement device

Abstract

The utility model belongs to the technical field of blast furnace, concretely relates to a blast furnace cooling wall replacement device. The blast furnace cooling wall replacement device includes: drive assembly is located in the furnace cap, hoisting platform is located in the furnace body in the liftable mode, first connecting piece is connected with drive assembly in one end, is connected with hoisting platform in the other end, and the masonry platform is located in the furnace body and is located below hoisting platform.

Description

Technical Field

[0001] This application belongs to the field of blast furnace technology, specifically relating to a blast furnace cooling wall replacement device. Background Technology

[0002] In blast furnace structural design, cooling walls serve as crucial cooling equipment, responsible for cooling the furnace shell and supporting the refractory materials inside the furnace. Installed on the inner wall of the blast furnace shell, cooling walls completely cover the hearth, belly, waist, body, and throat from bottom to top. A well-functioning cooling wall can prevent heat from the furnace interior from being directly conducted to the furnace shell, thereby extending the service life of the furnace shell.

[0003] Typically, the design life of a first-generation cooling wall is 5-10 years. When the cooling wall reaches its design life, the furnace needs to be shut down and the cooling wall replaced. However, in related technologies, it is difficult to replace the cooling wall. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a blast furnace cooling wall replacement device, which aims to at least partially solve the technical problem of the difficulty in replacing blast furnace cooling walls.

[0005] The technical solution of this utility model is as follows:

[0006] A blast furnace cooling wall replacement device is disclosed. The blast furnace includes a furnace body and a furnace cap, with the furnace cap located on top of the furnace body. The blast furnace cooling wall replacement device includes: a drive assembly located on the furnace cap; a lifting platform located in the furnace body in a liftable manner; a first connecting member, one end of which is connected to the drive assembly and the other end of which is connected to the lifting platform; and a construction platform located in the furnace body and below the lifting platform.

[0007] In some implementations, the blast furnace cooling wall replacement device further includes a second connector, one end of which is connected to the furnace cap and the other end of which is connected to the hoisting platform.

[0008] In some implementations, the furnace cap has multiple observation holes, and the first connector passes through the observation holes and connects to the hoisting platform.

[0009] In some embodiments, the furnace cap has a manhole communicating with the furnace body, the manhole being used for the entry and exit of the cooling wall within the furnace body.

[0010] In some implementations, the furnace body is provided with an air vent located below the masonry platform, and the air vent is used for the entry and exit of construction materials within the furnace body.

[0011] In some implementations, the blast furnace cooling wall replacement device further includes a third connector, one end of which is connected to the furnace cap and the other end of which is connected to the masonry platform.

[0012] In some embodiments, the blast furnace cooling wall replacement device further includes: a plurality of maintenance hoists connected to the masonry platform and located below the masonry platform.

[0013] In some embodiments, the drive assembly includes: a winch disposed on the furnace cap; and a pulley rotatably disposed on the furnace cap; wherein one end of the first connector is connected to the winch, and the other end is wound around the pulley and connected to the hoisting platform.

[0014] In some embodiments, the blast furnace cooling wall replacement device further includes: a throat protection shed platform, disposed inside the furnace body and located above the hoisting platform; wherein the throat protection shed platform is located below the furnace cap.

[0015] In some embodiments, the blast furnace cooling wall replacement device further includes a fourth connector, one end of which is connected to the furnace throat protection shed platform and the other end of which is connected to the furnace cap.

[0016] The beneficial effects of this utility model include at least the following:

[0017] Since the drive assembly is located in the furnace cap, the furnace cap can support the drive assembly. The lifting platform is vertically mounted inside the furnace body. One end of the first connector is connected to the drive assembly, and the other end is connected to the lifting platform. The construction platform is located inside the furnace body and below the lifting platform. Therefore, when replacing the cooling wall inside the furnace body, the drive assembly is activated. The drive assembly, through the first connector, moves the lifting platform up and down inside the furnace body to remove the old cooling wall and place it on the lifting platform. The old cooling wall is then lifted out of the furnace body by the lifting platform, and the new cooling wall is placed on the lifting platform. The drive assembly is then activated again, and through the first connector, it moves the lifting platform up and down inside the furnace body to install the new cooling wall. Operators can perform the cooling wall replacement work on the lifting platform without having to climb inside the furnace, making it easier for operators to replace the blast furnace cooling walls, improving disassembly and assembly efficiency, and reducing labor intensity.

[0018] In related technologies, the replacement and maintenance of cooling walls is a systematic maintenance. Generally, after the blast furnace is shut down, in addition to replacing the cooling walls, the hearth carbon bricks must also be replaced and the tuyere belt must be poured. The density of work and construction in various parts of the blast furnace is very high. If conventional flow-line operation is used, it will require a long shutdown time, resulting in significant losses for the enterprise. If parallel construction is carried out, problems such as cross-operation and limited material transportation channels will be encountered.

[0019] Because the bricklaying platform is located inside the furnace and below the hoisting platform, while operators are replacing the cooling walls via the hoisting platform, other operators can be working on the bricklaying platform to replace the hearth carbon bricks and pour the hearth tuyere strip. In other words, the processes of replacing the hearth carbon bricks, pouring the hearth tuyere strip, and replacing the cooling walls can be carried out simultaneously, minimizing safety issues caused by overlapping operations, improving work efficiency, and reducing blast furnace downtime. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 Schematic diagrams of the blast furnace cooling wall replacement device in some embodiments;

[0022] Figure 2 for Figure 1 A top view of the cooling wall replacement device for a medium blast furnace.

[0023] In the attached image:

[0024] 10 hoisting platforms;

[0025] Masonry platform 20;

[0026] Furnace body 30, air inlet 31, furnace throat 32;

[0027] Furnace cap 40, observation hole 41, water injection hole 42, manhole 43;

[0028] Second connector 50;

[0029] 60 hoists need to be inspected;

[0030] Furnace throat protection shed platform 70. Detailed Implementation

[0031] 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.

[0032] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] This application is described below with reference to the accompanying drawings and specific embodiments:

[0036] The blast furnace cooling wall replacement device provided in this embodiment aims to at least partially solve the technical problem of the difficulty in replacing blast furnace cooling walls.

[0037] Figure 1 Schematic diagrams of the blast furnace cooling wall replacement device in some embodiments; Figure 2 for Figure 1 A top view of the cooling wall replacement device for a medium blast furnace, combined with... Figure 1 and Figure 2 The blast furnace of this embodiment includes a furnace body 30 and a furnace cap 40. The furnace cap 40 is located on top of the furnace body 30. The blast furnace cooling wall replacement device includes a drive assembly, a hoisting platform 10, a first connecting member, and a construction platform 20. The drive assembly is located on the furnace cap 40. The hoisting platform 10 is vertically mounted inside the furnace body 30. One end of the first connecting member is connected to the drive assembly, and the other end is connected to the hoisting platform 10. The construction platform 20 is located inside the furnace body 30 and below the hoisting platform 10.

[0038] The drive assembly is located outside the furnace body 30.

[0039] The first connector can be a steel wire rope.

[0040] Since the drive assembly is located in the furnace cap 40, the furnace cap 40 can support the drive assembly. Since the hoisting platform 10 is vertically mounted inside the furnace body 30, one end of the first connector is connected to the drive assembly, and the other end is connected to the hoisting platform 10. The construction platform 20 is located inside the furnace body 30 and below the hoisting platform 10. Therefore, when the cooling wall inside the furnace body 30 needs to be replaced, the drive assembly is activated. The drive assembly drives the hoisting platform 10 to move up and down inside the furnace body 30 through the first connector to remove the old cooling wall and place it on the hoisting platform 10. The furnace body 30 is then lifted out by the hoisting platform 10, and the new cooling wall is placed on the hoisting platform 10. The drive assembly is then activated again, and the drive assembly drives the hoisting platform 10 to move up and down inside the furnace body 30 through the first connector to install the new cooling wall. Operators can perform the cooling wall replacement work on the hoisting platform 10 without having to climb inside the furnace wall. This makes it easier for operators to replace the blast furnace cooling wall, improves disassembly and assembly efficiency, and reduces labor intensity.

[0041] In related technologies, the replacement and maintenance of cooling walls is a systematic overhaul. Generally, after a blast furnace is shut down, in addition to replacing the cooling walls, the hearth carbon bricks must also be replaced and the tuyeres must be cast. The density of work and construction in various parts of the blast furnace is very high. Using conventional continuous operation requires a long shutdown time, resulting in significant losses for the enterprise. Using parallel construction with overlapping operations at different levels faces problems such as overlapping operations and limited material transportation channels.

[0042] Since the masonry platform 20 is located inside the furnace body 30 and below the hoisting platform 10, while the operators are replacing the cooling walls via the hoisting platform 10, the other operators can perform the replacement of the hearth carbon bricks and the casting of the hearth tuyere strip on the masonry platform 20. In other words, the replacement of the hearth carbon bricks, the casting of the hearth tuyere strip, and the replacement of the cooling walls can be carried out simultaneously, which eliminates the safety problems caused by cross-operations to the greatest extent, improves work efficiency, and reduces the blast furnace shutdown time.

[0043] Combination Figure 2 In some embodiments, in order to connect the first connector to the hoisting platform 10, the furnace cap 40 is provided with an observation hole 41, and the first connector passes through the observation hole 41 and connects to the hoisting platform 10. There can be multiple observation holes 41 and multiple first connectors, and multiple first connectors can pass through some of the multiple observation holes 41 and connect to the hoisting platform 10.

[0044] Combination Figure 1 and Figure 2In some embodiments, to ensure the safety of operators working on the hoisting platform 10, the blast furnace cooling wall replacement device further includes a second connecting member 50. One end of the second connecting member 50 is connected to the furnace cap 40, and the other end is connected to the hoisting platform 10. The second connecting member 50 connects the hoisting platform 10 to the furnace cap 40, allowing the furnace cap 40 to support the hoisting platform 10. In the event of breakage or damage to the first connecting member, the second connecting member 50 can maintain the hoisting platform 10 on the furnace cap 40, preventing the hoisting platform 10 from falling directly and ensuring the safety of the operators. The second connecting member 50 can be a steel wire rope.

[0045] Combination Figure 2 In some embodiments, to connect the second connector 50 to the hoisting platform 10, the furnace cap 40 has water injection holes 42, and the second connector 50 passes through the water injection holes 42 to connect with the hoisting platform 10. There can be multiple water injection holes 42 and multiple second connectors 50, and the multiple second connectors 50 can pass through some of the multiple water injection holes 42 to connect with the hoisting platform 10.

[0046] Combination Figure 2 In some embodiments, in order to facilitate the replacement of the cooling wall, the furnace cap 40 is provided with a manhole 43 that communicates with the furnace body 30. The manhole 43 is used for the entry and exit of the cooling wall in the furnace body 30. The old and new cooling walls can enter the furnace body 30 through the manhole 43 and be placed on the hoisting platform 10.

[0047] Combination Figure 1 In some embodiments, to facilitate the entry and exit of construction materials, the furnace body 30 is provided with tuyeres 31, which are located below the masonry platform 20. The tuyeres 31 are used for the entry and exit of construction materials within the furnace body 30, and the construction materials can enter the furnace body 30 through the tuyeres 31. The construction materials include materials used for pouring construction with a layer of tuyeres and / or materials used for the construction of the furnace hearth refractory.

[0048] In some embodiments, to ensure the stability of the blast furnace cooling wall replacement device within the furnace body 30, the blast furnace cooling wall replacement device further includes a third connector. One end of the third connector is connected to the furnace cap 40, and the other end is connected to the blast furnace cooling wall 20. The third connector connects the blast furnace cooling wall 20 to the furnace cap 40, and the furnace cap 40 supports the blast furnace cooling wall 20, ensuring the stability of the blast furnace cooling wall 20 installation. The third connector can be a steel wire rope.

[0049] Combination Figure 2In some embodiments, in order to connect the third connector to the masonry platform 20, the furnace cap 40 is provided with water injection holes 42, and the third connector passes through the water injection holes 42 to connect with the masonry platform 20. There can be multiple water injection holes 42 and multiple third connectors, and multiple third connectors can pass through some of the multiple water injection holes 42 to connect with the masonry platform 20.

[0050] Combination Figure 1 In some embodiments, to facilitate the installation of construction materials by operators, the blast furnace cooling wall replacement device further includes: maintenance hoists 60. Multiple maintenance hoists 60 are connected to the masonry platform 20 and located below the masonry platform 20. The maintenance hoists 60 are used to hoist materials for the first layer of tuyeres pouring and / or materials for the hearth refractory construction to the area below the masonry platform 20, allowing operators to work from below the masonry platform 20, facilitating material transportation during construction.

[0051] In some embodiments, to achieve the lifting and lowering of the hoisting platform 10, the drive assembly includes a winch and a pulley. The winch is mounted on the furnace cap 40 and supported by the furnace cap. The pulley is rotatably mounted on the furnace cap 40 and supported by the furnace cap. A first connecting member is connected at one end to the winch and at the other end, which is wound around the pulley and connected to the hoisting platform 10.

[0052] When the hoisting platform 10 needs to be raised or lowered, the winch is started. The winch drives the first connecting member to move on the pulley, so that the first connecting member can drive the hoisting platform 10 to be raised or lowered.

[0053] Combination Figure 1 In some embodiments, for spraying the furnace throat 32 of the furnace cap 40 and furnace body 30, the blast furnace cooling wall replacement device further includes a throat protection platform 70. The throat protection platform 70 is located inside the furnace body 30 and above the hoisting platform 10. The throat protection platform 70 is located below the furnace cap 40.

[0054] When spraying operations are to be performed on the throat furnace 32 and the furnace cap 40, the spraying material can enter the furnace body 30 through the manhole 43 and be placed on the throat protection platform 70. When the operator is performing the spraying operation, the operator can take the spraying material from the throat protection platform 70 to spray the throat furnace 32 and the furnace cap 40, which facilitates the operation of the operator, reduces labor intensity, and improves work efficiency.

[0055] Operators can simultaneously perform spraying operations on the furnace cap 40 and the furnace throat 32 of the furnace body 30, replace the carbon bricks in the hearth, pour the tuyeres in the hearth, and work on the cooling wall. This minimizes the safety issues caused by overlapping operations, improves work efficiency, and reduces blast furnace downtime.

[0056] In some embodiments, to ensure the stability of the throat protection platform 70 within the furnace body 30, the blast furnace cooling wall replacement device further includes a fourth connector. One end of the fourth connector is connected to the throat protection platform 70, and the other end is connected to the furnace cap 40. The fourth connector connects the throat protection platform 70 to the furnace cap 40, allowing the furnace cap 40 to support the throat protection platform 70 and ensuring the stability of the throat protection platform 70's installation. The fourth connector can be a steel wire rope.

[0057] Combination Figure 2 In some embodiments, in order to connect the fourth connector to the furnace throat protection platform 70, the furnace cap 40 is provided with water injection holes 42, and the fourth connector passes through the water injection holes 42 to connect with the furnace throat protection platform 70. There can be multiple water injection holes 42 and multiple fourth connectors, and the multiple fourth connectors can pass through some of the multiple water injection holes 42 to connect with the furnace throat protection platform 70.

[0058] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0059] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0061] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0062] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A blast furnace stave replacement device characterized by comprising: The blast furnace includes a furnace body and a furnace cap, the furnace cap being disposed on top of the furnace body, and the blast furnace cooling wall replacement device includes: The drive assembly is located on the furnace cap; The hoisting platform is installed inside the furnace body in a liftable manner; The first connector has one end connected to the drive assembly and the other end connected to the hoisting platform; A construction platform is located inside the furnace body and below the hoisting platform.

2. The blast furnace stave replacement device of claim 1, wherein, The blast furnace cooling wall replacement device also includes: The second connector is connected at one end to the furnace cap and at the other end to the hoisting platform.

3. The blast furnace stave replacement apparatus of claim 1, wherein, The furnace cap has multiple observation holes, and the first connector passes through the observation holes and connects to the hoisting platform.

4. A blast furnace stave replacement device according to any one of claims 1-3, characterized in that, The furnace cap has a manhole that communicates with the furnace body, and the manhole is used for the cooling wall to enter and exit the furnace body.

5. A blast furnace stave replacement device according to any one of claims 1-3, characterized in that, The furnace body has an air vent located below the masonry platform, and the air vent is used for the entry and exit of construction materials within the furnace body.

6. The blast furnace cooling wall replacement device according to any one of claims 1-3, characterized in that, The blast furnace cooling wall replacement device also includes: The third connector is connected at one end to the furnace cap and at the other end to the masonry platform.

7. A blast furnace stave replacement device according to any one of claims 1-3, characterized in that, The blast furnace cooling wall replacement device also includes: Multiple maintenance hoists are connected to the masonry platform and located below the masonry platform.

8. A blast furnace stave replacement device according to any one of claims 1-3, characterized in that, The driving component includes: A winch is installed at the furnace cap; A pulley is rotatably mounted on the furnace cap; The first connector is connected to the winch at one end and to the hoisting platform at the other end, which is wound around the pulley.

9. A blast furnace stave replacement device according to any one of claims 1-3, characterized in that, The blast furnace cooling wall replacement device also includes: A furnace throat protection shed platform is located inside the furnace body and above the hoisting platform; The furnace throat protection platform is located below the furnace cap.

10. The blast furnace stave replacement apparatus of claim 9, wherein, The blast furnace cooling wall replacement device also includes: The fourth connector is connected at one end to the furnace throat protection shed platform and at the other end to the furnace cap.

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