Novel cooling device for preventing blast furnace air supply system from burning through

Abstract

The utility model provides a novel cooling device for preventing a blast furnace air supply system from being burnt through. The novel cooling device comprises an atomization water fetching device, a compressed air conveying pipe, a water pipe and a connecting pipeline, the atomization water fetching device comprises an arc-shaped circular pipe structure; the arc-shaped circular tube structure is a hollow tubular structure with two closed ends; a plurality of atomization holes communicated with the interior of the arc-shaped circular tube structure are formed in the surface of the arc-shaped circular tube structure at intervals, and a connecting hole is formed in the bottom of the arc-shaped circular tube structure; one end of the connecting pipeline is detachably connected to the connecting hole, and the other end of the connecting pipeline is connected with the compressed air conveying pipe and the water pipe. And the compressed air conveying pipe and the water pipe are used for introducing compressed air and high-pressure water into the arc-shaped circular pipe structure through the connecting pipeline, so that the high-pressure water passes through the atomization holes to form atomized high-pressure water. According to the technical scheme, the problems that a large amount of high-pressure water flows into a hearth, slag and iron wires and water resources are wasted due to the fact that an existing water fetching device can cause the high-pressure water to flow into the hearth, the slag and the iron wires are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace smelting, and particularly relates to a novel cooling device for preventing the blast furnace air supply system from burning through. Background Art

[0002] The air supply system 1 in the blast furnace equipment for producing molten iron consists of a conical pipe, a corrugated compensator, a connecting pipe, an elbow, a spherical connector, and a tuyere pipe that are in communication with the hot air manifold (as Figure 1 shown). After a period of production, due to the shedding of refractory materials and deformation of metal components in the above components, the local temperature of the above components rises and turns red. If not controlled and continuously rises, there will be a risk of burning through. In the prior art, as Figure 2 shown, the water injection device commonly used to control the continuous temperature rise is to use a water injection pipe 2 to inject water for cooling the components that need to be cooled. Using this device, since it is impossible to weld a drainage structure such as a water tank below the high temperature, a large amount of high-pressure water will flow into the hearth and the slag and iron lines, resulting in major safety hazards and wasting a large amount of water resources at the same time. Summary of the Utility Model

[0003] In view of the technical problems existing in the cooling method of the existing blast furnace air supply branch system mentioned above, a novel cooling device for preventing the blast furnace air supply system from burning through is provided.

[0004] The technical means adopted by the utility model are as follows:

[0005] A novel cooling device for preventing the blast furnace air supply system from burning through, comprising an atomizing water injection device, a compressed air delivery pipe, a water pipe, and a connecting pipeline;

[0006] The atomizing water injection device comprises an arc-shaped circular pipe structure; the arc-shaped circular pipe structure is a hollow tubular structure with both ends closed; a plurality of atomizing holes communicating with the inside of the arc-shaped circular pipe structure are spaced on the surface of the arc-shaped circular pipe structure, and a connecting hole is opened at the bottom;

[0007] One end of the connecting pipeline is detachably connected to the connecting hole, and the other end is respectively connected to the compressed air delivery pipe and the water pipe; the compressed air delivery pipe and the water pipe are respectively connected to an air compressor air bag and a high-pressure water bag, and the air compressor air bag and the high-pressure water bag are respectively used to supply compressed air and high-pressure water to the compressed air delivery pipe and the water pipe; the compressed air delivery pipe and the water pipe are used to introduce compressed air and high-pressure water into the arc-shaped circular pipe structure through the connecting pipeline, so that the high-pressure water forms atomized high-pressure water through the atomizing holes to cool the components to be cooled.

[0008] Furthermore, the radian of the arc-shaped circular pipe structure matches the external shape of the component to be cooled in the air supply system.

[0009] Further, the components to be cooled in the air supply system include a conical pipe, a corrugated compensator, a connecting pipe, an elbow pipe, a spherical connector, and a direct blowing pipe, and each of the components to be cooled is provided with a corresponding arc-shaped circular pipe structure.

[0010] Further, the aperture of the atomizing holes is 2 mm, and the interval between two adjacent atomizing holes is 1 cm.

[0011] Further, one end of the connecting pipeline is connected to the connecting hole through a hose joint, and the other end is respectively connected to the compressed air delivery pipe and the water pipe through a three-way steel pipe.

[0012] Further, an air pressure valve for controlling the flow rate of the compressed air introduced into the connecting pipeline and a high-pressure water valve for controlling the flow rate of the high-pressure water are respectively installed on the compressed air delivery pipe and the water pipe.

[0013] Further, the pressures of the compressed air and the high-pressure water provided by the compressed air air bag and the high-pressure water water bag are greater than 0.45 MPa.

[0014] Compared with the prior art, the present utility model has the following advantages:

[0015] The novel cooling device for preventing the blast furnace air supply system from burning through provided by the present utility model atomizes the cooling water through the atomizing water injection device, which can effectively prevent high-pressure water from entering the hearth and the slag and iron wires, ensuring safe production, while reducing water resource waste and lowering the ironmaking cost.

[0016] Based on the above reasons, the present utility model can be widely promoted in the field of blast furnace smelting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of the air supply system of the existing blast furnace equipment.

[0019] Figure 2 It is a schematic working diagram of the water injection device of the existing air supply system.

[0020] Figure 3 It is a schematic structural diagram of the novel cooling device described in the present utility model.

[0021] Figure 4This is a schematic diagram of the use state of the novel cooling device described in the present utility model.

[0022] In the figure: 1. Air supply system; 2. Water injection pipe; 3. Compressed air delivery pipe; 4. Water pipe; 5. Pneumatic valve; 6. High-pressure water valve; 7. Hose joint; 8. Connecting pipeline; 9. Three-way steel pipe; 10. Arc-shaped circular pipe structure; 11. Atomization holes. Specific embodiments

[0023] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present utility model and its application or use. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present utility model. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the described features, steps, operations, devices, components and / or their combinations.

[0026] Unless otherwise specifically stated, the relative arrangements, numerical expressions and values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be clear that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. 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 value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. 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, it does not need to be further discussed in subsequent drawings.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary explanations, 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. Therefore, it should not be construed as a limitation on the protection scope of the present utility model: the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0028] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", 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 include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used here.

[0029] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above words have no special meanings. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

[0030] Embodiment 1

[0031] As Figure 3-4 shown, the present utility model provides a new type of cooling device for preventing the blast furnace blowing system from burning through, including an atomizing water injection device, a compressed air delivery pipe 3, a water pipe 4 and a connecting pipeline 8;

[0032] The atomizing water injection device includes an arc-shaped circular tube structure 10; the arc-shaped circular tube structure 10 is a hollow tubular structure with both ends closed; a number of atomizing holes 11 communicating with the inside of the arc-shaped circular tube structure 10 are spaced on the surface of the arc-shaped circular tube structure 10, and a connection hole is opened at the bottom;

[0033] One end of the connecting pipeline 8 is detachably connected to the connecting hole, and the other end is respectively connected to the compressed air delivery pipe 3 and the water pipe 4; the compressed air delivery pipe 3 and the water pipe 4 are respectively connected to an air compressor air bag and a high-pressure water bag, and the air compressor air bag and the high-pressure water bag are respectively used to supply compressed air and high-pressure water to the compressed air delivery pipe 3 and the water pipe 4; the compressed air delivery pipe 3 and the water pipe 4 are used to introduce compressed air and high-pressure water into the arc-shaped circular tube structure 10 through the connecting pipeline 8, so that the high-pressure water forms atomized high-pressure water through the atomization holes 11 to cool the component to be cooled.

[0034] Further, the radian of the arc-shaped circular tube structure 10 matches the external shape of the component to be cooled of the air supply system 1.

[0035] Further, the components to be cooled of the air supply system 1 include a conical tube, a corrugated compensator, a connecting pipe, an elbow, a spherical connecting piece and a direct blowing pipe, and each of the components to be cooled is provided with a corresponding arc-shaped circular tube structure 10.

[0036] Further, the aperture of the atomization hole 11 is 2 mm, and the interval between two adjacent atomization holes 11 is 1 cm.

[0037] Further, one end of the connecting pipeline 8 is connected to the connecting hole through a hose joint 7, and the other end is respectively connected to the compressed air delivery pipe 3 and the water pipe 4 through a three-way steel pipe 9.

[0038] Further, an air compressor air valve 5 and a high-pressure water valve 6 for controlling the flow of compressed air and high-pressure water introduced into the connecting pipeline 8 are respectively installed on the compressed air delivery pipe 3 and the water pipe 4.

[0039] Further, the pressure of the compressed air and high-pressure water provided by the air compressor air bag and the high-pressure water bag is greater than 0.45 MPa.

[0040] Working process: When the temperature of any component in the conical pipe, corrugated compensator, connecting pipe, elbow, spherical connector, and tuyere pipe in the blast air supply system 1 of the blast furnace equipment exceeds the specified value (generally greater than 400 °C), the corresponding arc-shaped circular pipe structure 10 of the component to be cooled can be selected. An appropriate position outside the blast air supply system can be selected to fix the atomizing water injection device, and then the connecting pipeline 8 is connected to the arc-shaped circular pipe structure 10. The compressed air air bag and the high-pressure water water bag are respectively connected to the compressed air delivery pipe 3 and the water pipe 4 through rubber hoses or quarter-round iron pipes. The compressed air delivery pipe 3 and the water pipe 4 are connected to the connecting pipeline 8, and the complete new cooling device is assembled. During use, compressed air and high-pressure water are provided to the compressed air delivery pipe 3 and the water pipe 4 through the compressed air air bag and the high-pressure water water bag, and then compressed air and high-pressure water are introduced into the arc-shaped circular pipe structure 10 through the connecting pipeline 8. During this process, the flow rates of the compressed air and high-pressure water introduced into the arc-shaped circular pipe structure 10 are controlled by adjusting the compressed air valve 5 and the high-pressure water valve 6, so that the high-pressure water sprayed out from the atomizing holes 11 of the arc-shaped circular pipe structure 10 is atomized high-pressure water (no water flow appears), thereby cooling the component to be cooled through the atomized high-pressure water, ensuring that while achieving the cooling effect, too much high-pressure water will not enter the hearth.

[0041] During use, the compressed air valve 5 can be slowly opened to the maximum flow rate first, and then the high-pressure water valve 6 is slowly opened. During the process of opening the high-pressure water valve 6, observe the atomization situation of the high-pressure water, and take the non-appearance of water flow as the standard until it is opened to the maximum flow rate. This can better control the formation of atomized high-pressure water.

[0042] The existing water injection devices used (such as Figure 2 shown), due to uneven water injection and non-atomization, usually require multiple water injection pipes 2 to be installed for water injection cooling when the temperature is relatively high, which will cause a large amount of water leakage and result in a large amount of water resource waste; while using the new cooling device for preventing the blast furnace air supply system from burning through described in the present invention, the high-pressure water for cooling can be atomized. While achieving the cooling effect, it can ensure that the high-pressure water will not enter the hearth and reduce the water consumption.

[0043] The new cooling device for preventing the blast furnace air supply system from burning through described in the present invention is used for the cooling operation of the blast furnace air supply systems of two 3200 m 3 in the Beiying Ironmaking General Factory of Benxi Steel. It is found that the water consumption can be greatly reduced, which plays an important role in the energy conservation and consumption reduction of the factory. At the same time, since the water for cooling is atomized, the unsafe factor of the water injection flowing into the hearth is avoided.

[0044] 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 it; 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 recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A new type of cooling device for preventing the blast furnace air supply system from burning through, characterized in that: It includes an atomizing water pumping device, a compressed air delivery pipe, a water pipe and connecting pipes; The atomizing water pumping device comprises an arc-shaped circular tube structure; the arc-shaped circular tube structure is a hollow tubular structure with closed ends; a plurality of atomizing holes connected to the interior of the arc-shaped circular tube structure are arranged at intervals on the surface of the arc-shaped circular tube structure, and a connecting hole is arranged at the bottom; One end of the connecting pipeline is detachably connected to the connecting hole, and the other end is respectively connected to the compressed air delivery pipe and the water pipe; the compressed air delivery pipe and the water pipe are respectively connected to the compressed air bag and the high-pressure water bag, and the compressed air bag and the high-pressure water bag are respectively used to provide compressed air and high-pressure water to the compressed air delivery pipe and the water pipe; the compressed air delivery pipe and the water pipe are used to pass compressed air and high-pressure water into the arc-shaped circular tube structure through the connecting pipeline, so that the high-pressure water passes through the atomization hole to form atomized high-pressure water, so as to cool the components to be cooled.

2. The novel cooling device for preventing the blast furnace air supply system from burning through according to claim 1 is characterized in that: The curvature of the arc-shaped circular tube structure matches the external shape of the component to be cooled in the air supply system.

3. The novel cooling device for preventing the blast furnace air supply system from burning through according to claim 2 is characterized in that: The components to be cooled in the air supply system include a tapered pipe, a corrugated compensator, a connecting pipe, a curved pipe, a spherical connector and a straight blowing pipe, and each of the components to be cooled is provided with a corresponding arc-shaped circular pipe structure.

4. The novel cooling device for preventing burn-through of blast furnace air supply system according to claim 1 is characterized in that: The diameter of the atomization hole is 2 mm, and the interval between two adjacent atomization holes is 1 cm.

5. The novel cooling device for preventing the blast furnace air supply system from burning through according to claim 1 is characterized in that: One end of the connecting pipeline is connected to the connecting hole through a hose joint, and the other end is connected to the compressed air delivery pipe and the water pipe respectively through a three-way steel pipe.

6. The novel cooling device for preventing the blast furnace air supply system from burning through according to claim 1 is characterized in that: The compressed air delivery pipe and the water pipe are respectively provided with an air pressure valve and a high-pressure water valve for controlling the flow of compressed air and high-pressure water entering the connecting pipeline.

7. The novel cooling device for preventing burn-through of blast furnace air supply system according to claim 1 is characterized in that: The pressure of the compressed air and high-pressure water provided by the air-compressed air bag and the high-pressure water bag is greater than 0.45 MPa.

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