Inner cover of cover type annealing furnace

Abstract

The inner cover of the cover type annealing furnace comprises a cylinder body, an end socket is fixedly connected to the upper end face of the cylinder body, connecting columns are evenly and fixedly installed on the surface of the end socket, the connecting columns are fixedly connected to the bottom face of a hanging ring through pins, a water tank is fixedly connected to the bottom face of the cylinder body, and a plurality of positioning rings are evenly and fixedly installed on the outer wall face of the cylinder body. A plurality of mounting holes are uniformly formed in the surface of the positioning ring, and reinforcing ribs are fixedly mounted in a manner of penetrating through the mounting holes. The positioning ring comprises a first semi-ring and a second semi-ring, and the first semi-ring and the second semi-ring are fixedly connected to form the circular positioning ring. The positioning rings are distributed layer by layer from the center to the two ends of the barrel, and the diameters of the positioning rings are sequentially decreased from the center to the two ends of the barrel. The utility model has the beneficial effects of more reasonable structural design, low processing and manufacturing cost, easiness in processing and manufacturing, convenience in operation, safer and more reliable use, excellent structural stability under the conditions of normal temperature and heating, excellent anti-cracking performance, long service life, environmental protection and energy conservation.

Description

TECHNICAL FIELD

[0001] The utility model relates to annealing furnace equipment for cold-rolled strip steel heat treatment, concretely relates to a cover type annealing furnace inner cover. BACKGROUND

[0002] The heat treatment of cold-rolled strip steel in the cover type annealing furnace is an indispensable process, and the production cycle of the cover type annealing furnace includes the stages of heating, heat preservation and cooling, etc., the steel strip is wound in the inner cover cylinder, and the inner cover cylinder is heated by gas between the inner cover cylinder and the outer cover, so that the sealing property of the inner cover cylinder is extremely strict. In addition, the heat resistance and strength of the inner cover cylinder are also required to be very high, the heat resistance ensures that the treated steel coil is not corroded or blackened on the surface, and the strength relates to the service life of the cover type annealing furnace. The inner cover plays a role in isolating the steel coil from the heating cover in the annealing process of the cover type furnace, avoiding direct corrosion of the heat source on the steel coil, and transferring the heat of the heating cover, and the inner cover also needs to seal the inner and outer cavities in the whole annealing process to ensure that the gas between the heating cover and the inner cover does not leak, so the cylinder of the inner cover needs to have excellent heat resistance.

[0003] In the prior art, the above two problems have not been completely solved, in practice, the longitudinal weld cracking on the inner cover cylinder and the deformation of the bottom cylinder are the main factors affecting the service life of the inner cover, and the reason for this problem is that the longitudinal weld is compressed or stretched when the inner cover cylinder is formed by corrugation, so that the internal organization of the weld is changed defectively, and the defects are easily expanded or enlarged when heated, so that the weld organization is unstable and the weld cracks. The bottom cylinder is affected by the gravity of the upper cylinder, and the strength of the cylinder decreases in the hot state, causing local deformation of the bottom cylinder of the inner cover. SUMMARY

[0004] The utility model discloses a cover type annealing furnace inner cover which is more reasonable in structural design, low in processing and manufacturing cost, easy to process and manufacture, convenient to operate, safe and reliable to use, excellent in structural stability and anti-cracking performance under normal temperature and heated conditions, long in service life and environment-friendly and energy-saving.

[0005] The utility model discloses a cover type annealing furnace inner cover, including the cylinder, the surface fixed connection of cylinder has the head, the upper end surface of head even fixed mounting has the connecting column, the connecting column is fixedly connected in the bottom surface of the ring through the hinge pin, the bottom of cylinder is fixedly connected with the water tank, the outer wall of cylinder even fixed mounting has a plurality of positioning rings, the surface of positioning ring even is provided with a plurality of mounting holes, and the reinforcing rib is fixedly installed through the mounting hole.

[0006] A plurality of positioning rings are uniformly fixed and installed on the outer wall surface of the cylinder body, the positioning rings are uniformly arranged on the outer wall surface of the cylinder body, the overall cylinder body can be improved in compression resistance and heat resistance, a plurality of mounting holes are uniformly arranged on the surface of the positioning ring, the reinforcing ribs can be conveniently installed, the reinforcing ribs are uniformly arranged on the outer wall surface of the cylinder body through the mounting holes and form a mesh arrangement with the positioning rings, the heat resistance and compression resistance of the cylinder body can be comprehensively improved, the radial and longitudinal stability of the cylinder body is enhanced, the mesh arrangement effectively avoids the extension of the weld structure during the manufacturing process and causes the final crack defects, the weld is uniformly stressed during use, the heat stability of the cylinder body is excellent, and the weld is not prone to cracking, the cylinder body is divided into a plurality of small areas by the reinforcing ribs and the positioning rings, thereby reducing the possibility of local deformation of the cylinder body under heat, the service life of the inner cover of the bell-type annealing furnace can be sufficiently improved, and energy saving and environmental protection are achieved.

[0007] The positioning ring comprises a first half ring and a second half ring, and the first half ring and the second half ring are fixedly connected to form a circular positioning ring.

[0008] The positioning ring is arranged in the structure of the first half ring and the second half ring, the installation of the positioning ring is facilitated, after the first half ring or the second half ring is fixedly installed on the outer wall surface of the cylinder body, the remaining second half ring can be welded and fixed with the first half ring, or the second half ring can be welded and fixed with the first half ring, the fixed installation is more secure and reliable, the installation steps are simplified, and the installation efficiency is improved.

[0009] The positioning rings are distributed layer by layer from the center of the cylinder body to both ends, and the diameters of the positioning rings decrease in turn from the center of the cylinder body to both ends.

[0010] The mounting holes are vertically correspondingly arranged.

[0011] The reinforcing rib is arranged in an arc shape.

[0012] The diameters of the positioning rings decrease in turn from the center of the cylinder body to both ends, the diameter is maximum at the center of the cylinder body, the diameter is minimum at both ends of the cylinder body, and the mounting holes are uniformly arranged on the surface of the positioning ring, the mounting holes on the surface of each layer of the positioning ring are vertically correspondingly arranged, a safe and reliable installation channel is provided for the arc-shaped reinforcing rib, an elliptical mesh arrangement is formed between the entire reinforcing rib and the positioning ring, sufficient deformation space is provided for the deformation allowance of the cylinder body when the cylinder body is heated, the arc-shaped structure of the reinforcing rib further enhances the radial and lateral stability of the cylinder body, the extension of the weld structure during the manufacturing process is effectively avoided, the weld is uniformly stressed during use, the heat stability of the cylinder body is excellent, and the weld is not prone to cracking, and the cylinder body is divided into a plurality of small areas by the reinforcing ribs and the positioning rings, thereby reducing the possibility of local deformation under heat.

[0013] The utility model has the advantages of:

[0014] 1) A plurality of positioning rings are uniformly fixed and installed on the outer wall surface of the cylinder, the positioning rings are uniformly arranged on the outer wall surface of the cylinder, which can improve the compression resistance and heat resistance of the whole cylinder, a plurality of mounting holes are uniformly arranged on the surface of the positioning ring, which can facilitate the installation of the reinforcing rib, the reinforcing rib is uniformly arranged on the outer wall surface of the cylinder through the mounting hole, and a mesh arrangement is formed with the positioning ring, which can comprehensively improve the heat resistance and compression resistance of the cylinder, enhance the radial and longitudinal stability of the cylinder, and effectively avoid the extension of the weld structure during the manufacturing process, so as to cause the final crack defect, the weld is uniformly stressed during use, the thermal stability of the cylinder is excellent, and the weld is not easy to crack; the cylinder is divided into a plurality of small areas by the reinforcing rib and the positioning ring, thereby reducing the possibility of local deformation of the cylinder under heat, fully improving the service life of the cover of the cover type annealing furnace, and saving energy and protecting the environment.

[0015] 2) The positioning ring is arranged in the structure of the first half ring and the second half ring, which can facilitate the installation of the positioning ring, and only the first half ring or the second half ring needs to be fixed and installed on the outer wall surface of the cylinder, then the remaining second half ring and the first half ring can be welded and fixed, or the second half ring and the first half ring can be welded and fixed, the fixed installation is more safe and reliable, the installation steps are simplified, and the installation efficiency is improved.

[0016] 3) The positioning ring is distributed layer by layer along the center of the cylinder to both ends, the diameter of the positioning ring decreases in turn from the center of the cylinder to both ends, the diameter is maximum at the center of the cylinder, and the diameter is minimum at both ends of the cylinder, and mounting holes are uniformly arranged on the surface of the positioning ring, the mounting holes on the surface of each layer of positioning ring are vertically correspondingly arranged, an installation reliable installation channel is provided for the safety of the arc-shaped reinforcing rib, and an elliptical mesh arrangement is formed between the whole reinforcing rib and the positioning ring, which provides sufficient deformation space for the deformation allowance of the cylinder when the cylinder is heated, and the arc-shaped structure of the reinforcing rib further enhances the radial and lateral stability of the cylinder. This structure effectively avoids defects caused by the extension of the weld structure during the manufacturing process, the weld is uniformly stressed during use, the thermal stability of the cylinder is excellent, and the weld is not easy to crack; the cylinder is divided into a plurality of small areas by the reinforcing rib and the positioning ring, thereby reducing the possibility of local deformation under heat.

[0017] 4) The device has more reasonable structure design, low processing and manufacturing cost, easy processing and manufacturing, convenient operation, safe and reliable use, excellent structural stability under normal temperature and under heat, excellent anti-cracking performance, long service life, environmental protection and energy saving, simple manufacturing process and convenient operation. The reinforced cylinder of the cover type furnace cover has excellent structural stability under normal temperature and under heat, the weld is not compressed or extended during the rolling of the cylinder, the internal stress of the weld is uniform, the organization is stable, the anti-cracking performance is excellent, and it is worth popularizing and applying. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the utility model;

[0019] Figure 2 It is a structural schematic view of the positioning ring in the utility model;

[0020] Figure 3 It is a side view of the reinforcing rib in the utility model.

[0021] In the drawing: the lifting ring 1, the connecting column 2, the head 3, the positioning ring 4, the first half ring 401, the second half ring 402, the mounting hole 403, the cylinder 5, the reinforcing rib 6, the water tank 7. Specific implementation mode

[0022] Example 1.

[0023] The utility model includes lifting ring 1, connecting column 2, head 3, positioning ring 4, first half ring 401, second half ring 402, mounting hole 403, cylinder 5, reinforcing rib 6, water tank 7, and the specific structure includes cylinder 5, the upper end surface fixed connection of cylinder 5 has head 3, the surface of head 3 is uniformly fixed and installed with connecting column 2, and connecting column 2 is fixedly connected to the bottom surface of lifting ring 1 through a cotter pin, and the bottom surface of cylinder 5 is fixedly connected with water tank 7, and the outer wall surface of cylinder 5 is uniformly fixed and installed with multiple positioning rings 4, multiple mounting holes 403 are uniformly arranged on the surface of positioning ring 4, and reinforcing rib 6 is fixedly installed through mounting hole 403.

[0024] The positioning ring 4 includes first half ring 401 and second half ring 402, and is fixedly connected between first half ring 401 and second half ring 402, forming circular positioning ring 4.

[0025] The positioning ring 4 and reinforcing rib 6 are made of steel material, the inner diameter size of positioning ring 4 is same with the outer diameter size of plane cylinder 5, and the outer diameter size of positioning ring 4 is 120mm larger than the inner diameter size, and the graduation circle diameter of mounting hole 403 is disposed at half of the width of positioning ring.

[0026] The use method is as follows: the positioning ring 4 is arranged on the outer surface of the cylinder 5, the positioning ring 2 is fixedly welded with the flat cylinder 1 at intervals of one layer except the lowermost layer and the uppermost layer of the positioning ring 4; after the first half ring 401 or the second half ring 402 is fixedly installed on the outer wall of the cylinder 5, the remaining second half ring 402 and the first half ring 401 can be welded and fixed, or the second half ring 402 and the first half ring 401 can be welded and fixed, and the fixed installation is safer and more reliable; the reinforcing rib 6 is arranged in the mounting hole 403 of the positioning ring 4, and the reinforcing rib 6 and the positioning ring 4 are welded and fixed at intervals of one layer except the lowermost layer and the uppermost layer, so that the cylinder 5, the positioning ring 4 and the reinforcing rib 6 form a complete whole, the heat resistance and pressure resistance of the cylinder 5 can be improved, the radial and longitudinal stability of the cylinder 5 is enhanced, the mesh structure is arranged, the extension of the weld joint organization in the manufacturing process is avoided, the weld joint is uniformly stressed in use, the heat stability of the cylinder 5 is excellent, and the weld joint is not easy to crack; the cylinder 5 is divided into a plurality of small areas by the reinforcing rib 6 and the positioning ring 4, so that the possibility of local deformation of the cylinder 5 due to heating is reduced, the service life of the cover of the cover annealing furnace can be improved, and energy saving and environmental protection are achieved.

[0027] Example 2.

[0028] The utility model discloses a hanging ring 1, connecting column 2, head 3, positioning ring 4, first half ring 401, second half ring 402, mounting hole 403, cylinder 5, reinforcing rib 6, water tank 7, specific structure includes cylinder 5, the surface fixed connection of cylinder 5 has head 3, the upper end surface of head 3 evenly fixed mounting has connecting column 2, and connecting column 2 is fixedly connected in the bottom surface of hanging ring 1 through the pin, and the bottom surface fixed connection of cylinder 5 has water tank 7, and the outer wall of cylinder 5 evenly fixed mounting has a plurality of positioning ring 4, and the surface of positioning ring 4 evenly is provided with a plurality of mounting holes 403, and reinforcing rib 6 is fixedly installed through penetrating mounting hole 403.

[0029] The positioning ring 4 includes a first half ring 401 and a second half ring 402, and the first half ring 401 and the second half ring 402 are fixedly connected to form a circular positioning ring 4.

[0030] The positioning ring 4 is distributed layer by layer from the center of the cylinder 5 to both ends, and the diameter of the positioning ring 4 decreases from the center of the cylinder 5 to both ends.

[0031] The mounting hole 403 is vertically arranged.

[0032] The reinforcing rib 6 is arranged in an arc shape.

[0033] The positioning ring 4 and the reinforcing rib 6 are made of steel material, the inner diameter of the positioning ring 4 is the same as the outer diameter of the cylinder 5, the outer diameter of the positioning ring 4 is 120mm to 200mm larger than the inner diameter, and the outer diameter of the positioning ring 4 decreases by 5mm from the middle to both ends of the cylinder 5; the diameter of the mounting hole 403 is 2mm larger than the diameter of the reinforcing rib 6, and the diameter of the index circle of the mounting hole 403 is located at half of the width of the positioning ring.

[0034] The material performance of the positioning ring 4 and the reinforcing rib 6 is higher than that of the cylinder 5;

[0035] The length direction of the reinforcing rib 6 cannot be spliced, the diameter of the reinforcing rib 6 is 1.5 times of the thickness of the cylinder 5, and the lower end and the upper end of the reinforcing rib 6 need to exceed the surface of the positioning ring 4 by 30 to 50mm.

[0036] The use method is as follows: the positioning ring 4 is arranged on the outer surface of the cylinder 5, the positioning ring 2 is fixed by full welding every other layer except the lowest layer and the top layer; after the first half ring 401 or the second half ring 402 is fixedly installed on the outer wall of the cylinder 5, the remaining second half ring 402 and the first half ring 401 can be welded and fixed, or the second half ring 402 and the first half ring 401 can be welded and fixed, and the fixed installation is safer and more reliable; the reinforcing rib 6 is arranged in the mounting hole 403 of the positioning ring 4, and the reinforcing rib 6 and the positioning ring 4 are welded and fixed every other layer except the lowest layer and the top layer; the positioning ring 4 is welded on the outer surface of the cylinder 5, the positioning ring 4 is arranged along the height direction of the plane cylinder 1 at an interval of about 500 to 600mm, the mounting holes 403 of each layer of the positioning ring 4 correspond to each other, the mounting holes 403 of each layer of the positioning ring 4 form an arc along the height direction of the cylinder 5, which facilitates the installation of the reinforcing rib 6, the positioning ring 4 needs to be fixed on the cylinder 5 by full welding every other layer except the lowest layer and the top layer, the joints of each layer of the positioning ring 4 need to be welded with full penetration, the reinforcing rib 6 is arranged in the mounting hole 403 of the positioning ring 4, the reinforcing rib 6 is fixed by full welding at both ends and welded and fixed once every other layer in the middle; meanwhile, the arc structure of the reinforcing rib 6 further enhances the radial and lateral stability of the cylinder, such structure effectively avoids the defects caused by the extension of the weld structure in the manufacturing process, the weld is uniformly stressed in use, the thermal stability of the cylinder is excellent, and the weld is not easy to crack; because the reinforcing rib 6 and the positioning ring 4 divide the cylinder 5 into several small areas, the possibility of local deformation caused by heating is reduced.

Claims

1. A hood-type annealing furnace inner hood, comprising a cylindrical body (5), a head (3) fixedly connected to the upper end face of the cylindrical body (5), connecting columns (2) uniformly fixedly installed on the surface of the head (3), the connecting columns (2) being fixedly connected to the bottom surface of the lifting ring (1) by pins, and a water tank (7) fixedly connected to the bottom surface of the cylindrical body (5), characterized in that: The outer wall surface of the barrel (5) is uniformly fixed with a plurality of positioning rings (4), the surface of the positioning ring (4) is uniformly provided with a plurality of mounting holes (403), and the reinforcing ribs (6) are fixedly installed through the mounting holes (403).

2. A cover for a bell-type annealing furnace as claimed in claim 1, characterized in that: The positioning ring (4) comprises a first half ring (401) and a second half ring (402), and the first half ring (401) and the second half ring (402) are fixedly connected to form a circular positioning ring (4).

3. A bell for a bell-type annealing furnace according to claim 2, characterized in that: The positioning ring (4) is distributed layer by layer from the center of the barrel (5) to both ends, and the diameter of the positioning ring (4) decreases in turn from the center of the barrel (5) to both ends.

4. A bell for a bell-type annealing furnace according to claim 3, characterized in that: The mounting hole (403) is vertically arranged.

5. A bell for a bell-type annealing furnace according to claim 4, characterized in that: The reinforcing rib (6) is arranged in an arc shape.

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