Blast furnace body maintaining and reinforcing structure

Abstract

The utility model provides a maintenance and reinforcement structure for a blast furnace body. The maintenance and reinforcement structure comprises a bearing platform, a blast furnace foundation fixed at the top of the bearing platform and the furnace body arranged at the top of the blast furnace foundation, a plurality of blast furnace steel columns are arranged around the furnace body; a supporting beam is connected between the blast furnace steel column and the furnace body; and the supporting beams and the blast furnace steel columns are used for suspending and fixing the furnace body during maintenance. According to the utility model, the blast furnace steel columns and the supporting beams are adopted to suspend and fix the furnace body, so that the damaged part of the furnace body can be conveniently cut and replaced, the furnace body is prevented from toppling due to deformation, and the service life of the furnace body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of iron-making blast furnaces, in particular to a blast furnace body maintenance and reinforcement structure. Background Art

[0002] The blast furnace is made of steel plates as the shell, and the shell is lined with refractory bricks. The blast furnace body is divided into five parts from top to bottom: throat, body, waist, belly, and hearth. Due to the advantages of good technical and economic indicators of blast furnace ironmaking, simple process, large production volume, high labor production efficiency, and low energy consumption, the iron produced by this method accounts for the vast majority of the world's total iron production. During blast furnace production, iron ore, coke, and slag-making flux (limestone) are loaded from the top of the furnace, and preheated air is blown in from the tuyere located along the furnace periphery at the bottom of the furnace. At high temperature, the carbon in the coke (some blast furnaces also spray auxiliary fuels such as coal powder, heavy oil, and natural gas) burns with the oxygen in the blown air to generate carbon monoxide and hydrogen, which removes oxygen in the iron ore during the rising process in the furnace, thereby reducing iron. The molten iron is released from the iron mouth. The unreduced impurities in the iron ore combine with fluxes such as limestone to form slag, which is discharged from the slag mouth. The generated gas is discharged from the top of the furnace and, after dust removal, is used as fuel for hot blast stoves, heating furnaces, coke ovens, boilers, etc.

[0003] The existing blast furnace body will deform and bend during use, and in severe cases it will cause the entire furnace body to tilt, so it is urgently needed to be improved. Utility Model Content

[0004] The utility model aims to provide a blast furnace body maintenance and reinforcement structure to solve at least one of the above-mentioned technical problems existing in the prior art.

[0005] In order to solve the above technical problems, the utility model provides a blast furnace body maintenance and reinforcement structure, comprising: a cap, a blast furnace foundation fixed on the top of the cap, and a furnace body arranged on the top of the blast furnace foundation;

[0006] A plurality of blast furnace steel columns are arranged around the furnace body;

[0007] A support beam is connected between the blast furnace steel column and the furnace body; the support beam and the blast furnace steel column are used to suspend and fix the furnace body during maintenance.

[0008] During use, the blast furnace body may be deformed and bent, and in severe cases, the entire body may be tilted. The main reason is that the bottom of the furnace body is deformed or corroded due to the higher temperature. When the maintenance structure of the present application is used for maintenance, the furnace body can be suspended and fixed by using the support beam and the blast furnace steel column, so that the bottom of the furnace body can be cut off and replaced. After the maintenance is completed, the connection between the support beam and the furnace body is contacted, and the blast furnace steel column is removed, and the furnace body can continue to be used normally.

[0009] Furthermore, the number of the blast furnace steel columns is 3-8, preferably 4-6.

[0010] Furthermore, a plurality of the blast furnace steel columns are evenly arranged in the circumferential direction of the furnace body.

[0011] Furthermore, in the height direction, multiple layers of the support beams are arranged at intervals.

[0012] Preferably, in the height direction, there are 3 to 6 layers of the support beams.

[0013] Furthermore, in the circumferential direction of the furnace body, a reinforcing cross beam is fixedly connected between two adjacent blast furnace steel columns.

[0014] Multiple reinforcement beams are connected end to end (through blast furnace steel columns) to form a closed-loop structure, making the entire reinforcement structure more stable.

[0015] Furthermore, it also includes an oblique brace, and both ends of the oblique brace are respectively connected to the blast furnace steel column and the support beam.

[0016] Preferably, an annular support plate is fixedly connected to the furnace body, a jack is provided on the top of the support platform, and a telescopic end of the jack rests on the annular support plate for straightening and supporting the furnace body.

[0017] Furthermore, the annular support plate is arranged close to the lower edge of the furnace body.

[0018] Preferably, there are multiple jacks distributed circumferentially on the support.

[0019] Preferably, the support beam is made of H500*300 steel.

[0020] Furthermore, a connecting structure is provided in the middle and upper part of the furnace body for detachably connecting with the supporting beam.

[0021] Furthermore, the connection structure includes a short beam and a connection flange; one end of the short beam is fixedly connected to the furnace body, and the other end of the short beam is provided with the connection flange;

[0022] An end plate detachably connected to the connecting flange is provided at one end of the supporting beam away from the blast furnace steel column. The connecting flange and the end plate can be detachably connected by bolts.

[0023] Preferably, the connecting structure is an ear plate, two ear plates are arranged in parallel and spaced apart, and a plug-in portion is provided at one end of the support beam away from the blast furnace steel column; through holes are provided on the plug-in portion and the ear plate; the plug-in portion is inserted between the two ear plates and fixed by a pin or bolt.

[0024] Furthermore, it also includes a telescopic mechanism; the two ends of the support beam are respectively hinged to the furnace body and the blast furnace steel column, and the two ends of the telescopic mechanism are respectively hinged to the support beam and the blast furnace steel column, and the telescopic mechanism is used to drive the support beam to swing, thereby straightening the furnace body.

[0025] Preferably, the telescopic mechanism is a manual, electric, pneumatic or hydraulic telescopic device, such as a cylinder, a hydraulic cylinder or an electric telescopic rod.

[0026] Furthermore, the telescopic mechanism comprises a screw and a sleeve;

[0027] One end of the two screws is hinged to the support beam and the blast furnace steel column respectively, and the other ends of the two screws are screwed into the two ends of the sleeve respectively; the two ends of the sleeve are respectively provided with internal thread segments adapted to the external threads of the two screws, and the rotation directions of the two internal thread segments are opposite, and by rotating the sleeve, the two screws are synchronously screwed into or out of the sleeve;

[0028] Alternatively, one end of the two sleeves are hingedly connected to the support beam and the blast furnace steel column respectively, and the two ends of the screw are screwed into the other ends of the two sleeves respectively; the two ends of the screw are respectively provided with external thread sections; the two sleeves are respectively provided with internal threads adapted to the external thread sections of the screw; the rotation directions of the two external thread sections are opposite, and by rotating the screw, the two ends of the screw are synchronously screwed into or out of the sleeves on both sides.

[0029] By adopting the above technical solution, the utility model has the following beneficial effects:

[0030] 1. In the utility model, the furnace body is suspended and fixed by using blast furnace steel columns and support beams, so that the damaged parts of the furnace body can be cut and replaced easily, thereby preventing the furnace body from tipping over due to deformation and increasing the service life of the furnace body.

[0031] 2. In the utility model, an annular support plate is arranged around the blast furnace steel column and supported by a jack, which can improve the stability of the furnace body; this design can provide a more uniform force distribution, reduce the single-point load on the blast furnace steel column, and thus reduce the risk of deformation and tipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1A front view of a blast furnace body maintenance and reinforcement structure provided in Example 1 of the utility model;

[0034] Figure 2 for Figure 1 The connection structure diagram of the support beam and the blast furnace steel column in the reinforcement structure shown;

[0035] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0036] Figure 4 This is a structural schematic diagram of another implementation of the connection structure in Example 1;

[0037] Figure 5 This is a schematic diagram of the connection structure between the support beam and the blast furnace steel column in Example 2.

[0038] Reference numerals:

[0039] 1. Blast furnace steel column; 2. Support beam; 3. Furnace body; 4. Annular support plate; 5. Jack; 6. Cap; 7. Blast furnace foundation; 8. Diagonal brace; 9. Reinforced beam; 10. Short beam; 11. Connecting flange; 12. End plate; 13. Ear plate; 14. Connecting part; 20. Telescopic mechanism; 21. Screw; 22. Casing. DETAILED DESCRIPTION

[0040] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The present invention will be further explained below in conjunction with specific implementation methods.

[0044] Example 1

[0045] like Figure 1-2 As shown, a blast furnace body maintenance and reinforcement structure provided in this embodiment includes: a base 6, a blast furnace foundation 7 fixed on the top of the base 6, and a furnace body 3 arranged on the top of the blast furnace foundation 7; a plurality of blast furnace steel columns 1 are arranged around the furnace body 3; a support beam 2 is connected between the blast furnace steel column 1 and the furnace body 3; the support beam 2 and the blast furnace steel column 1 are used to suspend and fix the furnace body 3 during maintenance.

[0046] During use, the blast furnace body 3 may be deformed and bent, and in severe cases, the entire body 3 may be tilted. The main reason is that the bottom of the body 3 is deformed or corroded due to the higher furnace temperature. When the maintenance structure of the present application is used for maintenance, the body 3 can be suspended and fixed by the support beam 2 and the blast furnace steel column 1, so that the bottom of the body 3 can be cut off and replaced. After the maintenance is completed, the connection between the support beam 2 and the body 3 is contacted, and the blast furnace steel column 1 is removed, and the body 3 can continue to be used normally.

[0047] Furthermore, the number of the blast furnace steel columns 1 is 3-8, preferably 4-6. The plurality of blast furnace steel columns 1 are evenly arranged in the circumferential direction of the furnace body 3. Figure 2 As shown, in this embodiment, four blast furnace steel columns 1 are arranged in a rectangular shape.

[0048] In this embodiment, in the height direction, multiple layers of the support beams 2 are arranged at intervals. In the height direction, 3 to 6 layers of the support beams 2 are included.

[0049] Furthermore, in the circumferential direction of the furnace body 3, a reinforcement beam 9 is fixedly connected between two adjacent blast furnace steel columns 1. A plurality of reinforcement beams 9 are connected end to end (through the blast furnace steel columns 1) to form a closed loop structure, making the entire reinforcement structure more stable.

[0050] Further preferably, it further comprises a diagonal brace 8, both ends of which are connected to the blast furnace steel column 1 and the support beam 2 respectively.

[0051] An annular support plate 4 is fixedly connected to the furnace body 3, and a jack 5 is arranged on the top of the support platform 6. The telescopic end of the jack 5 abuts against the annular support plate 4 to straighten and support the furnace body 3. The annular support plate 4 is arranged near the lower edge of the furnace body 3. A reinforcing rib plate is preferably arranged between the annular support plate 4 and the furnace body 3. Preferably, the number of the jacks 5 is multiple and distributed circumferentially on the support platform 6.

[0052] Preferably, the support beam 2 is made of H500*300 steel.

[0053] Preferably, a connecting structure is provided at the middle and upper part of the furnace body 3 for detachably connecting with the supporting beam 2 .

[0054] See also Figure 3 As shown, the connection structure may include a short beam 10 and a connection flange 11; one end of the short beam 10 is fixedly connected to the furnace body 3, and the other end of the short beam 10 is provided with the connection flange 11; the end of the support beam 2 away from the blast furnace steel column 1 is provided with an end plate 12 detachably connected to the connection flange 11. The connection flange 11 and the end plate 12 can be detachably connected by bolts.

[0055] See also Figure 4 As shown, the connection structure can also be an ear plate 13, two ear plates 13 are arranged in parallel and spaced apart, and a plug-in portion 14 is provided at the end of the support beam 2 away from the blast furnace steel column 1; through holes are provided on the plug-in portion 14 and the ear plate 13; the plug-in portion 14 is inserted between the two ear plates 13 and fixed by a pin or bolt.

[0056] The connection structure provided in the middle and upper part of the furnace body 3 is helpful for quickly connecting the above reinforcement structure during later maintenance, and can be quickly dismantled after maintenance and can be repeatedly used, thereby improving maintenance efficiency.

[0057] In the utility model, the furnace body 3 is suspended and fixed by using the blast furnace steel column 1 and the support beam 2, so that the damaged part of the furnace body 3 can be cut and replaced, thereby preventing the furnace body 3 from tipping over due to deformation and increasing the service life of the furnace body 3. In addition, an annular support plate 4 is arranged around the blast furnace steel column 1 and supported by a jack 5, so that the stability of the furnace body 3 can be improved; this design can provide a more uniform force distribution, reduce the single point load on the blast furnace steel column 1, and thus reduce the risk of deformation and tipping over.

[0058] Example 2

[0059] like Figure 5 As shown, this embodiment is basically the same as Embodiment 1, except that:

[0060] This embodiment also includes a telescopic mechanism 20; the two ends of the support beam 2 are respectively hinged to the furnace body 3 and the blast furnace steel column 1, and the two ends of the telescopic mechanism 20 are respectively hinged to the support beam 2 and the blast furnace steel column 1, and the telescopic mechanism 20 is used to drive the support beam 2 to swing, thereby straightening the furnace body 3.

[0061] Preferably, the telescopic mechanism 20 is a manual, electric, pneumatic or hydraulic telescopic device, such as a cylinder, a hydraulic cylinder or an electric telescopic rod.

[0062] In this embodiment, the telescopic mechanism 20 includes a screw 21 and a sleeve 22; one end of the two screws 21 is hinged to the support beam 2 and the blast furnace steel column 1 respectively, and the other ends of the two screws 21 are screwed into the two ends of the sleeve 22 respectively; the two ends of the sleeve 22 are respectively provided with internal thread segments adapted to the external threads of the two screws 21, and the rotation directions of the two internal thread segments are opposite. By rotating the sleeve 22, the two screws 21 are synchronously screwed into or out of the sleeve 22;

[0063] A through hole is preferably provided in the middle of the sleeve 22 for inserting a tool such as a lever to facilitate the rotation of the sleeve 22 .

[0064] Another implementation is that one end of the two sleeves 22 is hinged to the support beam 2 and the blast furnace steel column 1 respectively, and the two ends of the screw 21 are respectively screwed into the other ends of the two sleeves 22; the two ends of the screw 21 are respectively provided with external thread sections; the two sleeves 22 are respectively provided with internal threads adapted to the external thread sections of the screw 21; the rotation directions of the two external thread sections are opposite, and by rotating the screw 21, the two ends of the screw 21 are synchronously screwed into or out of the sleeves 22 on both sides.

[0065] Compared with the first embodiment, the structure of the present embodiment is more flexible. After the furnace body 3 is straightened by the telescopic mechanism 20, the furnace body 3 can be repaired.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A blast furnace body maintenance and reinforcement structure, characterized in that: include: A cap, a blast furnace foundation fixed on the top of the cap, and a furnace body arranged on the top of the blast furnace foundation; A plurality of blast furnace steel columns are arranged around the furnace body; A support beam is connected between the blast furnace steel column and the furnace body; the support beam and the blast furnace steel column are used to suspend and fix the furnace body during maintenance.

2. The blast furnace body maintenance and reinforcement structure according to claim 1, characterized in that: The number of the blast furnace steel columns is 3-8.

3. The blast furnace body maintenance and reinforcement structure according to claim 1, characterized in that: The plurality of blast furnace steel columns are evenly arranged in the circumferential direction of the furnace body.

4. The blast furnace body maintenance and reinforcement structure according to claim 1, characterized in that: In the height direction, multiple layers of the support beams are arranged at intervals.

5. The blast furnace body maintenance and reinforcement structure according to claim 4, characterized in that: In the height direction, it includes 3-6 layers of the supporting beams.

6. The blast furnace body maintenance and reinforcement structure according to claim 1, characterized in that: In the circumferential direction of the furnace body, a reinforcing cross beam is fixedly connected between two adjacent blast furnace steel columns.

7. The blast furnace body maintenance and reinforcement structure according to claim 1, characterized in that: It also includes an oblique brace, both ends of which are respectively connected to the blast furnace steel column and the support beam.

8. The blast furnace body maintenance and reinforcement structure according to claim 1, characterized in that: An annular support plate is fixedly connected to the furnace body, a jack is arranged on the top of the support platform, and the telescopic end of the jack rests on the annular support plate for straightening and supporting the furnace body.

9. The blast furnace body maintenance and reinforcement structure according to claim 8, characterized in that: The annular support plate is arranged close to the lower edge of the furnace body.

10. The blast furnace body maintenance and reinforcement structure according to claim 1, characterized in that: A connecting structure is provided at the middle and upper part of the furnace body for detachably connecting with the supporting beam.

11. The blast furnace body maintenance and reinforcement structure according to claim 10, characterized in that: The connecting structure comprises a short beam and a connecting flange; one end of the short beam is fixedly connected to the furnace body, and the other end of the short beam is provided with the connecting flange; An end plate detachably connected to the connecting flange is provided at one end of the supporting beam away from the blast furnace steel column.

12. The blast furnace body maintenance and reinforcement structure according to claim 10, characterized in that: The connection structure is an ear plate, two ear plates are arranged in parallel and spaced apart, and a plug-in portion is arranged at one end of the support beam away from the blast furnace steel column; through holes are arranged on the plug-in portion and the ear plate; the plug-in portion is inserted between the two ear plates and fixed by a pin or a bolt.

13. The blast furnace body maintenance and reinforcement structure according to claim 1, characterized in that: It also includes a telescopic mechanism; the two ends of the support beam are respectively hinged to the furnace body and the blast furnace steel column, and the two ends of the telescopic mechanism are respectively hinged to the support beam and the blast furnace steel column, and the telescopic mechanism is used to drive the support beam to swing, thereby straightening the furnace body.

14. The blast furnace body maintenance and reinforcement structure according to claim 13, characterized in that: The telescopic mechanism is a manual, electric, pneumatic or hydraulic telescopic device.

15. The blast furnace body maintenance and reinforcement structure according to claim 13, characterized in that: The telescopic mechanism comprises a screw rod and a sleeve; One end of the two screws is hinged to the support beam and the blast furnace steel column respectively, and the other ends of the two screws are screwed into the two ends of the sleeve respectively; the two ends of the sleeve are respectively provided with internal thread segments adapted to the external threads of the two screws, and the rotation directions of the two internal thread segments are opposite, and by rotating the sleeve, the two screws are synchronously screwed into or out of the sleeve; Alternatively, one end of the two sleeves are hingedly connected to the support beam and the blast furnace steel column respectively, and the two ends of the screw are screwed into the other ends of the two sleeves respectively; the two ends of the screw are respectively provided with external thread sections; the two sleeves are respectively provided with internal threads adapted to the external thread sections of the screw; the rotation directions of the two external thread sections are opposite, and by rotating the screw, the two ends of the screw are synchronously screwed into or out of the sleeves on both sides.

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