A device for fixing and adjusting the small bushing of a blast furnace tuyere

Abstract

The utility model provides a device for fixing and adjusting blast furnace tuyere small sleeve, include: fixed base, welds in tuyere big sleeve and the furnace skin flange below connection flange, the tail part fixed in fixed base, adjusting the jack, one end with the head part of jack is detachably connected, the other end abuts on the outer surface of tuyere small sleeve, the length of the jack is 1200mm, and it is equipped with high temperature wear -resisting gasket with tuyere small sleeve contact end. The utility model can effectively avoid the deformation of tuyere small sleeve by other factors and can realize the on -line adjustment of tuyere small sleeve position, avoids the occurrence of such as the accident of running wind and burning through.

Description

Technical Field

[0001] This utility model relates to the field of ironmaking technology, and in particular to a device for fixing and adjusting the small sleeve of the blast furnace tuyeres. Background Technology

[0002] In modern blast furnace smelting processes, the tuyere sleeve, as a key component of the blast furnace air supply system, is installed inside the tuyere inner sleeve, and its position is fixed externally by the air supply system and direct-blowing pipes. The tuyere sleeve is subjected to a harsh environment of high temperature and high pressure for a long time, and high-pressure cooling water is circulated inside to ensure its stable operation.

[0003] However, in actual production, the accumulation of zinc metal inside the furnace or abnormal shedding of slag can easily lead to uneven heating of the tuyeres sleeve, resulting in localized deformation. Once the tuyeres sleeve deforms, it not only disrupts the sealing fit between itself and the tuyeres sleeve and the air supply system, causing air leakage and affecting blast furnace smelting efficiency, but in severe cases, it can even lead to burn-through accidents, endangering production safety. Currently, conventional tuyeres sleeve structures are insufficient to effectively address this type of thermal stress deformation problem, and design improvements are urgently needed to enhance their deformation resistance and service life.

[0004] Therefore, developing a new type of tuyeres sleeve with a reinforced cooling structure, resistance to high-temperature deformation, and ease of maintenance is of great significance for improving the stability of blast furnace smelting and reducing the failure rate. Utility Model Content

[0005] This invention provides a device for fixing and adjusting the tuyere sleeve of a blast furnace, which solves the problem of deformation of the existing tuyere sleeve caused by other factors.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A device for fixing and adjusting a small tuyere sleeve of a blast furnace includes: a fixed base welded to the lower part of the flange connecting the large tuyere sleeve and the furnace shell; a jack with its tail fixed to the fixed base; and an adjusting rod, one end of which is detachably connected to the head of the jack, and the other end of which abuts against the outer surface of the small tuyere sleeve.

[0008] Furthermore, the length of the adjusting rod is 1200mm, and its contact end with the air vent sleeve is provided with a high-temperature wear resistant pad.

[0009] Furthermore, the adjusting rod has a segmented structure, including: a first segment rod, which is threadedly connected to the jack; and a second segment rod, which is adjustablely connected to the first segment rod via a flange or pin to accommodate air vent sleeves with different deformation amounts.

[0010] Furthermore, the contact surface of the high-temperature wear-resistant pad has an arc-shaped structure, which fits against the outer surface of the air vent sleeve.

[0011] Furthermore, the fixed base is provided with reinforcing ribs, the welding direction of which is consistent with the stress direction of the furnace skin, so as to enhance the overall support stability.

[0012] Furthermore, the jack is either hydraulic or screw-type, and is equipped with a locking nut to fix the adjusted position of the jack rod and prevent loosening.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention can effectively prevent the deformation of the air vent sleeve caused by other factors and can realize online adjustment of the position of the air vent sleeve, thus avoiding accidents such as air leakage and burn-through. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A diagram of the device for fixing and adjusting the small sleeve of the blast furnace tuyeres.

[0017] Explanation of icon numbers:

[0018] 1. Furnace shell; 2. Large tuyere sleeve; 3. Small tuyere sleeve; 4. Jack; 5. Adjusting top rod; 51. First section top rod; 52. Second section top rod; 6. Fixed base. Detailed Implementation

[0019] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0023] This utility model provides a technical solution: a device for fixing and adjusting the small sleeve 3 of the blast furnace tuyeres, such as... Figure 1 As shown, it includes: a fixed base 6, welded to 200mm below the flange connecting the tuyeres sleeve 2 and the furnace shell 1; a jack 4, the tail of which is fixed to the fixed base 6; an adjusting rod 5, one end of which is detachably connected to the head of the jack 4, and the other end abutting against the outer surface of the tuyeres sleeve 3, providing a fixed support function and preventing deformation of the tuyeres sleeve 3; the rod is 1200mm long, and its contact end with the tuyeres sleeve 3 is provided with a high-temperature wear-resistant gasket; the contact surface of the high-temperature wear-resistant gasket has an arc-shaped structure and fits against the outer surface of the tuyeres sleeve 3.

[0024] The adjusting rod 5 has a segmented structure, including: a first section rod 51, which is threadedly connected to the jack 4; and a second section rod 52, which is adjustablely connected to the first section rod 51 via a flange or pin to accommodate the air vent sleeve 3 with different deformation amounts.

[0025] The fixed base 6 is provided with reinforcing ribs, and its welding direction is consistent with the force direction of the furnace skin 1 to enhance the overall support stability.

[0026] The jack 4 is either hydraulic or screw-mechanical, and is equipped with a locking nut to fix the adjusted position of the jack rod and prevent loosening.

[0027] This device can also be equipped with a manual or electric pump on the jack 4 to adjust the extension and retraction of the jack 4 to adjust the effective distance of the entire device, thereby adjusting the deformation of the tuyeres sleeve 3. During maintenance, the device can be removed and restored after maintenance is completed without affecting the normal operation of blast furnace maintenance.

[0028] When used on the air vent sleeve in our factory, this invention can effectively prevent the air vent sleeve from deforming due to other factors and can realize online adjustment of the position of the air vent sleeve, thus avoiding accidents such as air leakage and burn-through.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for fixing and adjusting a small sleeve at a blast furnace tuyere, characterized in that, include: The fixed base (6) is welded to the lower part of the flange connecting the tuyeres sleeve (2) and the furnace skin (1); The jack (4) is fixed at its tail to the fixed base (6); The adjusting rod (5) is detachably connected at one end to the head of the jack (4), and at the other end abuts against the outer surface of the air vent sleeve (3). The adjusting rod (5) has a segmented structure, including: The first section of the top rod (51) is threadedly connected to the jack (4); The second-section top rod (52) is adjustablely connected to the first-section top rod (51) via a flange or pin to accommodate the air vent sleeve (3) with different deformation amounts.

2. The device for fixing and adjusting the blast furnace tuyeres sleeve according to claim 1, characterized in that, The length of the adjusting rod is 1200mm, and its contact end with the air vent sleeve (3) is provided with a high-temperature wear resistant pad.

3. The device for fixing and adjusting the blast furnace tuyeres sleeve according to claim 2, characterized in that, The contact surface of the high-temperature wear-resistant pad is an arc-shaped structure, which fits against the outer surface of the air vent sleeve (3).

4. The device for fixing and adjusting the blast furnace tuyere sleeve according to claim 1, characterized in that, The fixed base (6) is provided with reinforcing ribs, and its welding direction is consistent with the force direction of the furnace skin (1) to enhance the overall support stability.

5. The device for fixing and adjusting the blast furnace tuyeres sleeve according to claim 1, characterized in that, The jack (4) is either hydraulic or screw-mechanical and is equipped with a locking nut to fix the position of the adjusted jack rod and prevent it from loosening.

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