Air supply branch pipe for blast furnace

Abstract

The utility model provides an air supply branch pipe for a blast furnace, and relates to the field of blast furnaces, the air supply branch pipe for the blast furnace comprises a transverse pipeline, a connecting pipeline and an inclined pipeline, and vacuum thermal insulation cavities are formed in the transverse pipeline, the connecting pipeline and the inclined pipeline; during use, the transverse pipeline is installed on the blast furnace, high-pressure gas is blown into the inclined pipeline, the high-pressure gas sequentially passes through the connecting pipeline and the transverse pipeline to be blown into the blast furnace, and the heat insulation layers are arranged on the outer portion of the transverse pipeline, the outer portion of the connecting pipeline and the outer portion of the inclined pipeline. The transverse pipeline, the connecting pipeline and the inclined pipeline are all detachably installed, early-stage installation and later-stage maintenance and replacement are facilitated, heat can be prevented from being transmitted to the surfaces of the transverse pipeline, the connecting pipeline and the inclined pipeline through the vacuum heat insulation cavity and the heat insulation layer, heat loss is reduced, and safety of equipment is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of blast furnaces, and in particular to an air supply branch pipe for a blast furnace. Background Art

[0002] At present, in order to improve the smelting intensity, large domestic blast furnaces generally use high air temperature and high top pressure. The maximum air temperature can reach 1400℃, and the top pressure design is generally 200~550Kpa. These technical indicators put forward higher requirements for the blast furnace air supply system. The existing blast furnace air supply branch pipe is not easy to install, inconvenient for later maintenance, and has poor insulation effect. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide an air supply branch pipe for a blast furnace, which can solve the technical problems of inconvenient installation and poor thermal insulation effect.

[0004] An embodiment of the present application provides an air supply branch pipe for a blast furnace, comprising a transverse pipe, a connecting pipe, and an inclined pipe. First connecting flanges are provided at both ends of the connecting pipe, a second connecting flange is provided at the left end of the transverse pipe, and a third connecting flange is provided at the lower end of the inclined pipe. The first connecting flange and the second connecting flange, as well as the first connecting flange and the third connecting flange are used in conjunction with each other. An extension pipe is provided at the lower end of the left side of the transverse pipe, and a vacuum insulation chamber is provided inside the transverse pipe, inside the connecting pipe, and inside the inclined pipe, and an insulation layer is provided outside the transverse pipe, outside the connecting pipe, and outside the inclined pipe.

[0005] Preferably, fixed connecting parts are provided on the connecting pipe and the inclined pipe.

[0006] Preferably, the fixed connection member comprises an upper tie rod assembly and a lower tie rod assembly, and the upper tie rod assembly is used in conjunction with the lower tie rod assembly.

[0007] Preferably, a sealing gasket is arranged between the first connecting flange and the second connecting flange, and between the first connecting flange and the third connecting flange, and the sealing gasket is made of metal material.

[0008] Preferably, an extension piece is provided on the right side of the transverse pipe, the interior of the extension piece is hollow, and the extension piece is made of high temperature resistant material.

[0009] Preferably, the width of the vacuum temperature-insulating chamber is at least 2 cm, the thickness of the heat-insulating layer is 2-5 cm, and the heat-insulating layer is made of aluminum oxide.

[0010] Preferably, the transverse pipes, connecting pipes and inclined pipes are all made of metal.

[0011] Beneficial effects of the utility model:

[0012] The utility model provides an air supply branch pipe for a blast furnace, comprising a transverse pipe, a connecting pipe and an inclined pipe, wherein first connecting flanges are arranged at both ends of the connecting pipe, a second connecting flange is arranged at the left end of the transverse pipe, and a third connecting flange is arranged at the lower end of the inclined pipe, the first connecting flange and the second connecting flange, the first connecting flange and the third connecting flange are all used in conjunction with each other, an extension pipe is arranged at the lower end of the left side of the transverse pipe, a vacuum temperature insulation chamber is arranged inside the transverse pipe, inside the connecting pipe and inside the inclined pipe, and a heat insulation layer is arranged outside the transverse pipe, outside the connecting pipe and outside the inclined pipe. When the utility model is in use, the transverse pipe is installed on the blast furnace, and high-pressure gas is blown into the interior of the inclined pipe, and the high-pressure gas is blown into the interior of the blast furnace through the connecting pipe and the transverse pipe in turn. The transverse pipe, the connecting pipe and the inclined pipe of the utility model can be detachably installed, which is convenient for early installation, later maintenance and replacement, and the vacuum temperature insulation chamber and the heat insulation layer of the utility model can prevent heat from being transferred to the surfaces of the transverse pipe, the connecting pipe and the inclined pipe, thereby reducing heat loss and ensuring the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] The reference numerals are:

[0016] 1. Horizontal pipeline; 2. Connecting pipeline; 3. Inclined pipeline; 4. First connecting flange; 5. Second connecting flange; 6. Third connecting flange; 7. Extension pipe; 8. Vacuum insulation chamber; 9. Insulation layer; 10. Fixed connector; 11. Upper tie rod assembly; 12. Lower tie rod assembly; 13. Sealing gasket; 14. Extension piece. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0020] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0021] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] like Figure 1As shown, a blast furnace air supply branch pipe comprises a transverse pipe 1, a connecting pipe 2, and an inclined pipe 3. The connecting pipe 2 is provided with a first connecting flange 4 at both ends, the left end of the transverse pipe 1 is provided with a second connecting flange 5, and the lower end of the inclined pipe 3 is provided with a third connecting flange 6. The first connecting flange 4 and the second connecting flange 5, the first connecting flange 4 and the third connecting flange 6 are used in conjunction with each other, an extension pipe 7 is provided at the lower end of the left side of the transverse pipe 1, and a vacuum temperature insulation chamber 8 is provided inside the transverse pipe 1, inside the connecting pipe 2, and inside the inclined pipe 3. The outside of the transverse pipe 1 , the outside of the connecting pipe 2 and the outside of the inclined pipe 3 are both provided with an insulation layer 9. When the utility model is in use, the transverse pipe 1 is installed on the blast furnace, and high-pressure gas is blown into the inclined pipe 3. The high-pressure gas is blown into the blast furnace through the connecting pipe 2 and the transverse pipe 1 in turn. The transverse pipe 1, connecting pipe 2 and inclined pipe 3 of the utility model can be detached and installed, which is convenient for early installation and later maintenance and replacement. The vacuum insulation chamber 8 and the insulation layer 9 of the utility model can prevent heat from being transferred to the surfaces of the transverse pipe 1, the connecting pipe 2 and the inclined pipe 3, thereby reducing heat loss and ensuring the safety of the equipment.

[0024] like Figure 1 As shown, in this embodiment, a fixed connector 10 is provided on the connecting pipe 2 and the inclined pipe 3, and the fixed connector 10 includes an upper tie rod assembly 11 and a lower tie rod assembly 12. The upper tie rod assembly 11 is used together with the lower tie rod assembly 12. The fixed connector 10 is used to connect the connecting pipe 2 and the inclined pipe 3 of the utility model to the blast furnace. The length and angle of the pipe can be adjusted by the upper tie rod assembly 11 and the lower tie rod assembly 12, which is convenient for use.

[0025] like Figure 1 As shown, in this embodiment, a sealing gasket 13 is arranged between the first connecting flange 4 and the second connecting flange 5, and between the first connecting flange 4 and the third connecting flange 6. The sealing gasket 13 is made of metal material. The sealing gasket 13 of the utility model can prevent air leakage.

[0026] like Figure 1 As shown, in this embodiment, an extension piece 14 is provided on the right side of the transverse pipe 1. The extension piece 14 is hollow inside and is made of high temperature resistant material. Specifically, when in use, the extension piece 14 is extended to the inside of the blast furnace.

[0027] like Figure 1 As shown, in this embodiment, in order to ensure the thermal insulation performance, the width of the vacuum temperature insulation chamber 8 is at least 2 cm, the thickness of the thermal insulation layer 9 is 2-5 cm, and the thermal insulation layer 9 is made of aluminum oxide.

[0028] like Figure 1 As shown, in this embodiment, in order to extend the service life of the utility model, the transverse pipe 1, the connecting pipe 2, and the inclined pipe 3 are all made of metal.

[0029] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An air supply branch pipe for a blast furnace, characterized in that: It includes a transverse pipe, a connecting pipe and an inclined pipe. First connecting flanges are arranged at both ends of the connecting pipe, a second connecting flange is arranged at the left end of the transverse pipe, and a third connecting flange is arranged at the lower end of the inclined pipe. The first connecting flange and the second connecting flange, as well as the first connecting flange and the third connecting flange are used in conjunction with each other. An extension pipe is arranged at the lower end of the left side of the transverse pipe. Vacuum temperature insulation chambers are arranged inside the transverse pipe, inside the connecting pipe and inside the inclined pipe, and heat insulation layers are arranged outside the transverse pipe, outside the connecting pipe and outside the inclined pipe.

2. The air supply branch pipe for a blast furnace according to claim 1, characterized in that: Fixed connecting parts are arranged on the connecting pipe and the inclined pipe.

3. The air supply branch pipe for a blast furnace according to claim 2, characterized in that: The fixed connection member comprises an upper pull rod assembly and a lower pull rod assembly, and the upper pull rod assembly is used in conjunction with the lower pull rod assembly.

4. The air supply branch pipe for a blast furnace according to claim 1, characterized in that: A sealing gasket is arranged between the first connecting flange and the second connecting flange, and between the first connecting flange and the third connecting flange, and the sealing gasket is made of metal material.

5. The air supply branch pipe for a blast furnace according to claim 1, characterized in that: An extension piece is arranged on the right side of the transverse pipe, the interior of the extension piece is hollow, and the extension piece is made of high temperature resistant material.

6. The air supply branch pipe for a blast furnace according to claim 1, characterized in that: The width of the vacuum temperature-insulating chamber is at least 2 cm, the thickness of the heat-insulating layer is 2-5 cm, and the heat-insulating layer is made of aluminum oxide.

7. The air supply branch pipe for a blast furnace according to claim 1, characterized in that: The transverse pipes, connecting pipes and inclined pipes are all made of metal.

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