Rapidly-mounted heat-preserving furnace cover of converter

Abstract

The utility model relates to the technical field of metallurgy, in particular to a quick-assembly type heat-preserving furnace cover for a converter, which can reduce the temperature loss of a furnace lining during the waiting period of the converter. The fast-assembly type converter heat preservation furnace cover comprises a furnace cover body, a heat preservation layer is arranged on the inner side of the furnace cover body, an anti-falling hook used for being hung on a converter opening is arranged on the edge of the furnace cover body, and an installation hanging tool used in cooperation with a converter disassembling machine is arranged on the outer side face of the furnace cover body. According to the converter cover, the mounting hanging tool used in cooperation with the converter disassembling machine is arranged on the outer side face of the converter cover body, when the converter is subjected to heat preservation, the converter is inclined by a certain angle through the operation trolley, the converter cover body can be conveniently hung on the edge of a converter opening through the converter disassembling machine, operation is easy and convenient, the converter cover can be suitable for converters of different tonnages, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgy, in particular to a quick-installed converter heat-insulating furnace cover which can reduce the temperature loss of the furnace lining during the converter waiting for production. Background Art

[0002] During the intervals between converter smelting production in steel mills, cold air enters the open furnace mouth, causing the temperature of the furnace lining to drop rapidly. In addition to increasing energy consumption, the temperature loss can easily cause the lining to peel off, reducing the service life of the lining and increasing the maintenance cost of the lining. It is known that the same industry has the practice of installing insulation covers during the converter waiting period, but the installation process of the insulation cover is complicated, and the installation and removal require the cooperation of multiple cranes, involving many personnel and professions, and the installation and removal take a long time, so the use and promotion are limited.

[0003] The utility model patent with the authorization announcement number CN216712157U provides a heat preservation device for a converter, including a cover plate, a tin foil plate, a lifting lug assembly, a rib plate and a fixing assembly; the cover plate corresponds to the converter furnace mouth, and the cover plate covers the converter furnace mouth; the tin foil plate is made of tin foil material, fixed to the bottom surface of the cover plate, and is located in the converter furnace mouth; the lifting lug assembly, the rib plate and the fixing assembly are fixed to the top surface of the cover plate, and the lifting lug assembly corresponds to the furnace dismantling machine drill rod, and the furnace dismantling machine drill rod passes through the bottom of the lifting lug assembly and is fixed by the fixing assembly. Although the application can realize the rapid installation of the heat preservation furnace cover, the cover plate can only be placed flat on the converter furnace mouth. This installation method requires a larger force arm, and the larger the tonnage of the converter, the more difficult it is to install. This type of heat preservation device is only suitable for shielding the furnace mouth of a small tonnage converter, and the conventional furnace dismantling machine cannot satisfy the requirement of placing it flat on the furnace mouth of a large tonnage converter, and the practical scenario is limited. Based on this, the prior art still needs to be improved. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model proposes a quick-installation converter insulation cover to solve the problem that the existing insulation device is not suitable for large-tonnage converters.

[0005] The utility model discloses a quick-installed converter heat preservation furnace cover, which comprises: a furnace cover body, a heat preservation layer, an anti-fall hook and a mounting hanger. The heat preservation layer is arranged on the inner side of the furnace cover body; the anti-fall hook is arranged on the edge of the furnace cover body and is used to be hung on the converter furnace mouth. The mounting hanger is arranged on the outer side of the furnace cover body and is used to cooperate with the furnace dismantling machine.

[0006] In some embodiments, the installation position of the installation hanger is offset from the center of gravity of the furnace cover body, so as to facilitate the furnace cover body to remain stable during the transfer process.

[0007] In some embodiments, the mounting bracket includes a hinge seat and a sleeve mounted on the hinge seat; the hinge seat is fixedly mounted on the outer surface of the furnace cover body at a position deviated from the center of gravity; the axis of the projection of the sleeve on the furnace cover body is on the diameter of the furnace cover body. When the furnace cover body is lifted and moved in the up and down directions, the center of gravity of the furnace cover body will be directly below the mounting bracket.

[0008] In some embodiments, the hinge seat includes two hinged ear plates, each of which is provided with a mounting hole, and a plurality of key slots are distributed on the hole wall of the mounting hole. A limit shaft is vertically mounted on the sleeve, and splines cooperating with the plurality of key slots are circumferentially arranged at both ends of the limit shaft, and two compression springs are sleeved on the limit shaft, and the two ends of each compression spring are respectively abutted against the hinged ear plate and the sleeve, so that the inclination angle of the sleeve can be adjusted according to the inclination angle and height of the converter, so as to facilitate the taking and placement of the furnace cover body.

[0009] In some embodiments, the two ends of the sleeve along the axial direction are respectively a first end and a second end, the first end is closer to the center of the furnace cover body than the second end, and the distance from the first end to the limit axis is greater than the distance from the second end to the limit axis, the sleeve is tilted, and the distance from the first end to the furnace cover body is greater than the distance from the second end to the furnace cover body. In other words, the first end of the sleeve is tilted upward relative to the furnace cover body to facilitate the operation of the furnace dismantling machine.

[0010] In some embodiments, the quick-install converter insulation cover also includes a drill rod for inserting the sleeve, and the drill rod is installed at the operating end of the furnace dismantling machine. The insertion is simple and convenient, and no additional tool parts are required.

[0011] In some embodiments, the cross-section of the anti-fall hook is L-shaped and includes an extension plate and a hanging plate connected to the extension plate. The extension plate is at the edge of the furnace cover body and is on the side close to the second end of the sleeve. The extension plate extends to the side away from the center of the furnace cover body; the hanging plate is installed on the inner side of the extension plate to facilitate stably maintaining the insulation furnace cover at the furnace mouth of the converter.

[0012] In some embodiments, the insulation layer is made of refractory material, including any one of refractory bricks, refractory castables or refractory fibers.

[0013] In some embodiments, the hinge seat also includes a backing plate, which is installed on the furnace cover body by bolts, and the two hinged ear plates are welded to the backing plate, which is convenient for the quick installation and replacement of the hinged ear plates as a whole.

[0014] In some embodiments, the outer surface of the furnace cover body has grid-shaped reinforcement ribs. Specifically, the outer surface of the furnace cover body is provided with transverse ribs and longitudinal ribs forming a plurality of grids.

[0015] The beneficial effects of the utility model are as follows: by arranging a mounting hanger for use with a furnace dismantling machine on the outer side of the furnace cover body, when the converter is insulated, the converter is tilted at a certain angle by means of an operating vehicle, so that the furnace dismantling machine can hang the furnace cover body on the edge of the converter furnace mouth, and the operation is simple and convenient, and the utility model can be applied to converters of different sizes and tonnages, and has a wide range of applications. When the converter is tilted at a certain angle, the furnace dismantling machine also tilts the furnace cover body accordingly, and at this time the anti-fall hook is located on the upper side of the tilted furnace cover body, so that it is convenient to hang on the converter furnace mouth. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A front view of a quick-install converter heat-insulating furnace cover provided by the utility model is shown;

[0017] Figure 2 A side view of a quick-install converter heat-insulating furnace cover provided by the utility model is shown.

[0018] Description of reference numerals:

[0019] 1. Furnace cover body; 2. Sleeve; 3. Hinge seat; 4. Insulation layer; 5. Anti-fall hook. DETAILED DESCRIPTION

[0020] It should be understood that the embodiments of the present invention shown in the exemplary embodiments are illustrative only. Although only a few embodiments are described in detail in the present invention, it is easy for those skilled in the art to understand that multiple modifications are feasible without actually departing from the teachings of the subject matter of the present invention. Accordingly, all such modifications should be included within the scope of the present invention. Without departing from the gist of the present invention, other replacements, modifications, changes and deletions may be made to the design, operating conditions and parameters of the following exemplary embodiments.

[0021] like Figure 1 As shown, a quick-installed converter insulation furnace cover of the utility model includes a furnace cover body 1, an insulation layer 4, an anti-fall hook 5 and a mounting hanger. The size of the furnace cover body 1 is consistent with the size of the converter furnace mouth. The insulation layer 4 is arranged on the inner side of the furnace cover body 1 to prevent the heat loss inside the converter; the anti-fall hook 5 is arranged on the edge of the furnace cover body 1 and is used to hang on the converter furnace mouth, so as to quickly determine the position of the insulation furnace cover and keep it stably on the converter. The mounting hanger is arranged on the outer side of the furnace cover body 1 and is used to cooperate with the furnace dismantling machine to facilitate the operation of the furnace cover body 1. When the furnace cover body 1 is transferred to the converter furnace mouth, the converter is tilted at a certain angle with the help of the operating vehicle so that it cooperates with the furnace dismantling machine, so as to facilitate the furnace cover body 1 to be hung on the edge of the converter furnace mouth.

[0022] Compared with the prior art, the utility model is provided with a mounting hanger for use with a furnace dismantling machine on the outer side of the furnace cover body 1. When the converter is insulated, the converter is tilted at a certain angle by means of an operating vehicle, so that the furnace dismantling machine can hang the furnace cover body 1 on the edge of the converter furnace mouth. The operation is simple and convenient, and the utility model can be applied to converters of different sizes and tonnages, and has a wide range of applications. When the converter is tilted at a certain angle, the furnace dismantling machine also tilts the furnace cover body 1 accordingly. At this time, the anti-fall hook 5 is located on the upper side of the tilted furnace cover body 1, so that it is convenient to hang on the converter furnace mouth.

[0023] In some embodiments, the installation position of the installation hanger is offset from the center of gravity of the furnace cover body 1. Specifically, the installation position of the installation hanger can be offset toward the location of the anti-fall hook 5, so that the installation position of the installation hanger is located between the center of gravity of the furnace cover body 1 and the location of the anti-fall hook 5. The insulation cover can be at a certain angle during installation to match the inclined furnace opening and to facilitate the furnace cover body 1 to remain stable during transfer.

[0024] In some embodiments, the mounting hanger includes a hinge seat 3 and a sleeve 2 hinged to the hinge seat 3; the hinge seat 3 is fixedly mounted on the outer surface of the furnace cover body 1 at a position deviating from the center of gravity, the sleeve 2 is mounted on the hinge seat 3, the axis of the projection of the sleeve 2 on the furnace cover body 1 is on the diameter of the furnace cover body 1, and the anti-fall hook 5 is located at one end of the diameter. The utility model controls the movement of the furnace cover body 1 through the sleeve 2. Since the axis of the sleeve 2 is in the radial direction of the furnace cover body 1 when it is projected on the furnace cover body 1, when the furnace cover body 1 is lifted and moved in the up and down directions, the center of gravity of the furnace cover body 1 will be directly below the mounting hanger, which can make the insulation cover present a certain angle during the installation process, so as to match the inclined furnace mouth, and enable the furnace cover body 1 to remain stable during the up and down lifting process.

[0025] In some embodiments, the hinge seat 3 includes two hinged ear plates, each of which is provided with a mounting hole, and a plurality of key slots are evenly distributed on the hole wall of the mounting hole. A limit shaft is vertically installed on the sleeve 2, and splines cooperating with a plurality of key slots are circumferentially provided at both ends of the limit shaft. Two compression springs are sleeved on the limit shaft, and the two ends of each compression spring are respectively abutted against the hinged ear plate and the sleeve 2. In a natural state, the spline is in a corresponding key slot, and the misalignment of the spline and the key slot can be achieved by applying an external force to overcome the action of the two compression springs, and the inclination angle of the sleeve 2 can be adjusted by controlling the rotation of the sleeve 2, and then the spline is reinserted into the corresponding key slot. Among them, the inclination angle of the sleeve 2 can be adapted according to the inclination angle and height of the converter, so as to facilitate the taking and placement of the furnace cover body 1.

[0026] In some embodiments, the two ends of the sleeve 2 along the axial direction are respectively a first end and a second end, the first end is closer to the center of the furnace cover body 1 than the second end, and the distance from the first end to the limit axis is greater than the distance from the second end to the limit axis, so as to control the free adjustment of the inclination angle of the sleeve 2 by controlling the first end of the sleeve 2. The distance from the first end to the furnace cover body 1 is greater than the distance from the second end to the furnace cover body 1, that is, the first end of the sleeve 2 is inclined upward relative to the furnace cover body 1, which is convenient for the operation of the furnace dismantling machine.

[0027] In some embodiments, the quick-install converter insulation cover also includes a drill rod for inserting the sleeve 2. The drill rod is installed at the operating end of the furnace dismantling machine, which is simple and convenient to insert and install without the need for additional tool parts.

[0028] In some embodiments, the anti-fall hook 5 has an L-shaped cross section and includes an extension plate and a hanging plate connected to the extension plate. The extension plate is located at the edge of the furnace cover body 1 and is located on a side close to the second end of the sleeve 2, so that when the converter is in a tilted state, the anti-fall hook 5 can be located on the upper part of the furnace cover body 1 to prevent the furnace cover body 1 from falling. The extension plate extends to a side away from the center of the furnace cover body 1; the hanging plate is installed on the inner side of the extension plate. Specifically, a slot matching the hanging plate is provided on the converter furnace mouth, and the hanging plate can be inserted into the slot. When the hanging plate is inserted into the slot, the slot is located on the upper top of the converter in a tilted state, so as to stably keep the heat preservation furnace cover at the furnace mouth of the converter.

[0029] In some embodiments, the insulation layer 4 is made of refractory materials, including any one of refractory bricks, refractory castables or refractory fibers. These refractory materials have good load-bearing properties, can support the insulation furnace cover structure, and ensure the stability and safety of the insulation furnace cover. By using lightweight refractory materials, the temperature of the insulation furnace cover can be effectively reduced, the overall weight of the insulation furnace cover can be reduced, and the movement and maintenance of the insulation furnace cover can be facilitated. And it has a good thermal insulation effect, which can reduce the heat storage loss of the converter and improve thermal efficiency.

[0030] In some embodiments, the hinge seat 3 also includes a backing plate, which is installed on the furnace cover body 1 by bolts, and the two hinged ear plates are welded to the backing plate, which is convenient for the quick installation and replacement of the hinged ear plates as a whole.

[0031] In some embodiments, the outer surface of the furnace cover body 1 has grid-shaped reinforcing ribs. Specifically, the outer surface of the furnace cover body 1 is provided with transverse ribs and longitudinal ribs forming a plurality of grids, which can enhance the structural stability and help to dissipate heat from the surface of the furnace cover body 1, thereby avoiding overheating of the thermal insulation furnace cover and increasing the service life of the thermal insulation furnace cover.

[0032] A quick-installed converter insulation cover according to an embodiment of the utility model is used during the intervals between converter smelting production. After the converter production is completed, the furnace mouth slag is cleaned by a furnace dismantling machine. The converter is tilted at a certain angle by an operating vehicle, and a slot thereon is adjusted to the top directly above. Afterwards, the furnace dismantling machine controls the drill rod thereon to be inserted into the first end of the sleeve 2, and lifts the furnace cover body 1 to the front of the converter furnace mouth, hangs the hanging plate on the slot, and makes the furnace cover body 1 cover the furnace mouth on the converter. The converter is reset. The disassembly process of the insulation furnace cover is opposite to the installation sequence, and will not be repeated.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. If the present invention is modified or replaced by equivalents without departing from the spirit and scope of the present invention, it should be included in the scope of protection of the claims of the present invention.

Claims

1. A quick-install converter insulation cover, characterized in that: include: Furnace cover body (1); A thermal insulation layer (4), the thermal insulation layer (4) being arranged on the inner side of the furnace cover body (1); An anti-fall hook (5), the anti-fall hook (5) being arranged on the edge of the furnace cover body (1) and being used for hanging on the converter furnace mouth; A mounting hanger is arranged on the outer side of the furnace cover body (1) and is used in conjunction with a furnace dismantling machine.

2. The quick-install converter heat-insulating cover according to claim 1, characterized in that: The installation position of the installation hanger deviates from the center of gravity of the furnace cover body (1).

3. The quick-install converter insulation cover according to claim 2 is characterized in that: The mounting hanger comprises a hinge seat (3) and a sleeve (2) hinged to the hinge seat (3); the hinge seat (3) is fixedly mounted on the outer surface of the furnace cover body (1) at a position deviating from the center of gravity; the axis of the projection of the sleeve (2) on the furnace cover body (1) is located on the diameter of the furnace cover body (1).

4. The quick-install converter insulation cover according to claim 3 is characterized in that: The hinge seat (3) comprises two hinged ear plates, each hinged ear plate is provided with a mounting hole, a plurality of key slots are distributed on the hole wall of the mounting hole, a limit shaft is vertically mounted on the sleeve (2), splines matching the plurality of key slots are circumferentially arranged at both ends of the limit shaft, and two compression springs are sleeved on the limit shaft, and the two ends of each compression spring are respectively abutted against the hinged ear plate and the sleeve (2).

5. The quick-install converter heat-insulating cover according to claim 4 is characterized in that: The two ends of the sleeve (2) along the axial direction are respectively a first end and a second end, the first end is closer to the center of the furnace cover body (1) than the second end, and the distance from the first end to the limit axis is greater than the distance from the second end to the limit axis, and the sleeve (2) is arranged tilted, and the distance from the first end to the furnace cover body (1) is greater than the distance from the second end to the furnace cover body (1).

6. The quick-install converter heat-insulating cover according to claim 3, characterized in that: It also comprises a drill rod for inserting the sleeve (2), and the drill rod is installed at the operating end of the furnace dismantling machine.

7. The quick-install converter heat-insulating cover according to claim 5, characterized in that: The anti-fall hook (5) has an L-shaped cross-section and comprises an extension plate and a hanging plate connected to the extension plate, wherein the extension plate is located at the edge of the furnace cover body (1) and is located on a side close to the second end of the sleeve (2), and the extension plate extends to a side away from the center of the furnace cover body (1); the hanging plate is installed on the inner side of the extension plate.

8. The quick-install converter heat-insulating cover according to claim 1, characterized in that: The thermal insulation layer (4) is made of refractory material, including any one of refractory bricks, refractory castables or refractory fibers.

9. The quick-install converter heat-insulating cover according to claim 4, characterized in that: The hinge seat (3) also includes a backing plate, which is mounted on the furnace cover body (1) by means of bolts, and the two hinged ear plates are welded to the backing plate.

10. The quick-install converter heat-insulating cover according to claim 1, characterized in that: The outer surface of the furnace cover body (1) has grid-shaped reinforcement ribs.

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