Arrangement process of deep pit type galvanizing equipment

Abstract

The invention relates to a deep pit type galvanizing equipment arrangement process. An overground area and an underground area located below the overground area are included. The overground area is used for cooling and drying galvanized strip steel; in the underground area, the strip steel transferred from the overground area is galvanized, and the depth of the underground area is larger than or equal to 10 meters. The underground area for mounting the galvanizing equipment has the beneficial effects that the underground area for mounting the galvanizing equipment is arranged underground, so that the problems caused by the construction of a galvanizing process in a factory due to the height limitation problem after site selection of the factory are effectively solved, the technological process of a galvanizing unit is broken through, and the production procedures of the whole cold rolling factory are further perfected.

Description

Technical Field

[0001] The invention relates to the technical field of galvanizing processing, in particular to a deep pit type galvanizing equipment layout process. Background Art

[0002] Galvanized steel plates have always been the main product of post-cold rolling treatment of steel plates. They are widely used in construction, home appliances, vehicles and ships, container manufacturing, electromechanical industry and other fields. Because of its good corrosion resistance and low cost, it has become the preferred material in many industrial applications. In recent years, with the reduction of national infrastructure and investment, the investment of domestic private steel mills has been gradually reduced, and investment and site selection have become more rational. Large private enterprises are arranged according to the national regional layout, relying on raw material suppliers to establish a complete set of cold rolling production processes. In this process, in order to meet the process requirements, the unit will set up a cooling tower to cool the strip steel according to the product of the product, and the cooling tower is generally 30~45m high, which requires the height of the factory to reach 35~50m; However, after selecting a factory site, some manufacturers have to bear in mind that the factory building must not be higher than a certain height due to height restrictions in the selected area, such as height restrictions in the flight area, the influence of natural factors such as wind pressure, and height restrictions in regional planning. If the factory site is changed at this time, it will affect the supply of raw materials, increase freight costs, and other problems. Summary of the invention

[0003] The present invention aims at the technical problems existing in the prior art and provides a deep pit type galvanizing equipment layout process, so that the process is not restricted by site selection and space is saved at the same time.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: A deep pit type galvanizing equipment layout process includes an above-ground area and an underground area below the above-ground area; The above-ground area is used to cool and dry the galvanized steel strip; the underground area galvanizes the steel strip transferred from the above-ground area, and the depth of the underground area is greater than or equal to 10 meters.

[0005] As a further technical solution, the underground area includes an upper equipment area and a lower equipment area connected to the upper equipment area, and the upper equipment area is provided with a tension roller, a process control room, and a zinc pot inductor electrical room; The lower equipment area is provided with a zinc pot.

[0006] As a further technical solution, the process control room and the zinc pot inductor electrical room are arranged side by side in the upper equipment area.

[0007] As a further technical solution, the above-ground area includes an annealing furnace installation area, a strip cooling area, an equipment maintenance area, and a water quenching area. The annealing furnace installation area and the equipment maintenance area are respectively connected to one side of the strip cooling area. The water quenching area is arranged on one side below the strip cooling area, and there is a gap between the other side below the strip cooling area and the top of the underground area.

[0008] As a further technical solution, a cooling tower crane is provided in the above-ground area, and the cooling tower crane horizontally passes through the equipment maintenance area and the strip cooling area, and the equipment in the underground area is hoisted to the equipment maintenance area by the cooling tower crane; The cooling tower crane is located below the strip cooling zone.

[0009] As a further technical solution, the annealing furnace in the annealing furnace installation area is of L-turn type, so that the strip steel is rotated 90° under the action of the annealing furnace to enter the underground area.

[0010] As a further technical solution, the tension roller is arranged vertically so that the strip enters the zinc pot in a vertical direction.

[0011] As a further technical solution, the above-ground area is provided with an electric hoist beam.

[0012] As a further technical solution, the upper equipment area is provided with a sunken roller oven, and the sunken roller oven is located below the cooling tower crane in the equipment maintenance area.

[0013] The beneficial effects of the present invention are as follows: after the site selection of the factory, due to the height limitation of the factory construction, the cooling speed of the unit in the galvanizing section is limited, the production speed of the unit is reduced, and the production capacity cannot be fully utilized. The method of foundation pit operation of the present invention solves the height limitation problem, facilitates operation, saves space and reduces costs; in addition, the entire strip steel route of the unit is adjusted, and the working capacity of the unit is improved in coordination with the adjustment of the layout of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view structural schematic diagram of a deep pit type galvanizing equipment arrangement process of the present invention; Figure 2 It is a side structural schematic diagram of the layout process of a deep pit galvanizing equipment of the present invention.

[0015] In the accompanying drawings, the components represented by the reference numerals are listed as follows: Upper equipment area 1, tension roller 11, process control room 12, zinc pot induction body electrical room 13, sinking roller oven 14; Lower equipment area 2, zinc pot 21; Annealing furnace installation area 3, annealing furnace 31; Strip cooling zone 4, beam plate 41, cooling wind box 42, high tower pinch roller 43; Equipment maintenance area 5, water quenching area 6, cooling tower crane 7. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0017] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0018] In the description of the present application, the term "for example" is used to mean "used as an example, illustration or description". Any embodiment described as "for example" in the present application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is given to enable any technician in the field to implement and use the present invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details to obscure the description of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0019] Example 1 In the galvanizing process of steel strip, since the temperature of the steel strip from the zinc pot to the first turning roller is not less than 280°, and the temperature of the steel strip out of the zinc pot after galvanizing is 460°, the steel strip needs to be cooled 180° from the zinc pot to the highest turning roller of the equipment. At the same time, the sprayed surface of the steel strip cannot be cooled by air before the surface of the steel strip solidifies, and can only be cooled naturally. Therefore, the height from the zinc pot to the first high tower is the basic height of the plant design. Therefore, after the site is selected, the galvanizing process of the steel strip cannot be effectively processed due to the height limit problem. This embodiment provides a deep pit galvanizing equipment layout process to solve the above technical problems after site selection. See Figure 1 , Figure 2, the process specifically includes an above-ground area and an underground area located below the above-ground area; The above-ground area is used to cool and dry the galvanized steel strip; the underground area galvanizes the steel strip transferred from the above-ground area, and the depth of the underground area is greater than or equal to 10 meters.

[0020] For example, when designing the galvanizing unit, the height of the factory building is limited to 27 meters, and according to the process requirements of the galvanizing unit, the height of the factory building needs to reach 37 meters. Therefore, the underground area designed in this embodiment is set to a depth of 10 meters, a length of 22 meters, and a width of 15 meters. At this time, the basic height of the galvanizing unit designed in the factory building can be 27 meters.

[0021] In the specific implementation process, the underground area includes an upper equipment area 1 and a lower equipment area 2 connected to the upper equipment area 1. The upper equipment area 1 is provided with a tension roller 11, a process control room 12, and a zinc pot inductor electrical room 13; the lower equipment area 2 is provided with a zinc pot 21. That is, the depth of the upper equipment area 1 plus the depth of the lower equipment area 2 is equal to 10 meters.

[0022] For example, the tension roller 11 is used to apply tension to the galvanized steel strip so that the steel strip remains in a good state during subsequent processing; The process control room 12 is used by the staff to control the opening and working speed of each device in the galvanizing unit; The zinc pot induction body electrical room 13 is a room for placing and managing the electrical equipment related to the induction heating system of the zinc pot 21. It is the core area of ​​the entire zinc pot 21 heating control, providing power and control signals for the zinc pot 21 induction body and monitoring and adjusting the relevant electrical parameters.

[0023] The tension roller 11 is arranged vertically so that the steel strip enters the zinc pot 21 in a vertical direction, and the equalization section of the annealing furnace 31 is located in the upper equipment area 1.

[0024] In the specific implementation process, the process control room 12 and the zinc pot inductor electrical room 13 are arranged side by side in the upper equipment area 1, and the height of the process control room 12 can be greater than the height of the zinc pot inductor electrical room 13.

[0025] In the specific implementation process, the above-ground area includes an annealing furnace installation area 3, a strip cooling area 4, an equipment maintenance area 5, and a water quenching area 6. The annealing furnace installation area 3 and the equipment maintenance area 5 are respectively connected to one side of the strip cooling area 4. The water quenching area 6 is arranged on one side below the strip cooling area 4, and there is a gap between the other side below the strip cooling area 4 and the top of the underground area.

[0026] For example, the annealing furnace 31 in the annealing furnace installation area 3 is of L-turning type, so that the strip steel rotates 90° under the action of the annealing furnace 31 to enter the underground area. It can be seen that turning rollers are arranged in the balancing section of the annealing furnace 31, so that the strip steel can be transferred to the lower equipment area 2 of the underground area.

[0027] The strip cooling zone 4 is provided with four layers of beams and plates 41 in the longitudinal direction, wherein each layer of the first three layers of beams and plates 41 is provided with a cooling air box 42 for cooling the strip after galvanizing. Figure 1 , which can be divided into an upward cooling zone and a downward cooling zone from left to right, that is, after the strip steel comes out of the zinc pot 21, it first goes up to the third layer of beam plate 41 on the left (at this time, the temperature of the galvanized strip steel reaches the required requirement), then moves from top to bottom through the downward cooling zone on the right to the cooling wind box 42 on the bottom layer, and then enters the water quenching zone 6 for water quenching cooling. For example, a deviation correction device, a drying device, etc. can be installed in the downward cooling zone on the right. It can be explained that a high tower pinch roller 43 can be set on the beam plate 41 on the top layer.

[0028] The equipment maintenance area 5 can be used to repair or replace the equipment that needs repair or replacement of parts in the galvanizing unit, and the equipment maintenance area 5 can be another adjacent factory building, that is, the equipment maintenance is carried out in one factory building, and the galvanizing is carried out in another adjacent factory building, which is convenient for equipment maintenance and parts replacement across factories.

[0029] Furthermore, the above-ground area is provided with an electric hoist to lift the zinc ingots to the lower equipment area 2 for zinc addition.

[0030] In the specific implementation process, the ground area is provided with a cooling tower crane 7, and the cooling tower crane 7 horizontally passes through the equipment maintenance area 5 and the strip cooling area 4, and the equipment in the underground area is hoisted to the equipment maintenance area 5 by the cooling tower crane 7; the cooling tower crane 7 is located below the strip cooling area 4, which is convenient for hoisting, maintenance, and space saving; for example, the air knife and three-roller six-arm can be replaced or repaired.

[0031] It can be explained that the upper equipment area 1 is provided with a sinking roller drying oven 14, and the sinking roller drying oven 14 is located below the cooling tower crane 7 in the equipment maintenance area 5. That is, the sinking roller drying oven 14 and the zinc pot 21 are installed in different workshops.

[0032] To enhance stability and improve strength, support piles may be designed around the inner wall of the underground area. At the same time, to improve ventilation resistance, ventilation ducts may be provided on the inner wall of the underground area to cool the area and ventilate it at the same time.

[0033] The present invention is achieved in that: The annealing furnace 31 transfers the steel strip from the above-ground area to the underground area, and the tension roller 11 applies tension to the steel strip coming out of the annealing furnace 31, so that the steel strip is transported to the zinc pot 21 for galvanizing under the coordinated action of the guide rollers; The galvanized strip steel passes through the upward cooling zone and the downward cooling zone in sequence under the action of the high tower pinch roller 43, and then enters the water quenching zone 6 for water quenching cooling.

[0034] The design of the lower equipment area in the underground area of ​​the present invention solves the problem of the upper limit of the galvanizing unit in the factory building, improves the production speed of the galvanizing unit, gives full play to the production capacity of the galvanizing unit, solves the bottleneck of cold rolling mill processing, and saves space; at the same time, the strip steel route of the galvanizing unit is adjusted, and the layout of the equipment is coordinated to further improve the production capacity of the galvanizing unit, and the operation is convenient.

[0035] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0036] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A deep pit galvanizing equipment layout process, characterized in that: including an above-ground area and an underground area located below the above-ground area; The above-ground area is used to cool and dry the galvanized steel strip; the underground area galvanizes the steel strip transferred from the above-ground area, and the depth of the underground area is greater than or equal to 10 meters.

2. A deep pit galvanizing equipment layout process according to claim 1, characterized in that: The underground area comprises an upper equipment area (1) and a lower equipment area (2) connected to the upper equipment area (1), wherein the upper equipment area (1) is provided with a tension roller (11), a process control room (12), a zinc pot (21) and a zinc pot (21) inductor electrical room (13); The lower equipment area (2) is provided with a zinc pot (21).

3. A deep pit galvanizing equipment layout process according to claim 2, characterized in that: The process control room (12), the zinc pot (21) and the zinc pot (21) inductor electrical room (13) are arranged side by side in the upper equipment area (1).

4. A deep pit galvanizing equipment layout process according to claim 2, characterized in that: The above-ground area comprises an annealing furnace installation area (3), a steel strip cooling area (4), an equipment maintenance area (5), and a water quenching area (6); the annealing furnace installation area (3) and the equipment maintenance area (5) are respectively connected to one side of the steel strip cooling area (4); the water quenching area (6) is arranged on one side below the steel strip cooling area (4); and there is a gap between the other side below the steel strip cooling area (4) and the top of the underground area.

5. A deep pit galvanizing equipment layout process according to claim 4, characterized in that: The above-ground area is provided with a cooling tower crane (7), and the cooling tower crane (7) horizontally passes through the equipment maintenance area (5) and the strip cooling area (4), and the equipment in the underground area is hoisted to the equipment maintenance area (5) by the cooling tower crane (7); The cooling tower crane (7) is located below the strip steel cooling zone (4).

6. A deep pit galvanizing equipment layout process according to claim 4, characterized in that: The annealing furnace (31) in the annealing furnace installation area (3) is of an L-shaped turning type, so that the steel strip is rotated 90 degrees under the action of the annealing furnace (31) to enter the underground area.

7. A deep pit galvanizing equipment layout process according to claim 2, characterized in that: The tension roller (11) is arranged vertically so that the steel strip enters the zinc pot (21) in a vertical direction.

8. A deep pit galvanizing equipment layout process according to claim 1, characterized in that: The above-ground area is provided with an electric hoist.

9. A deep pit galvanizing equipment layout process according to claim 2, characterized in that: The upper equipment area (1) is provided with a submerged roller drying oven (14), and the submerged roller drying oven (14) is located below the cooling tower crane (7) in the equipment maintenance area (5).

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