Descaling header structure with adjustable descaling spraying width

Abstract

The utility model discloses a descaling collecting pipe structure with adjustable descaling spraying width. The descaling collecting pipe structure comprises a descaling collecting pipe body and a plurality of nozzles which are uniformly distributed along the length direction of the descaling collecting pipe body, comprising a water inlet main pipe, a plurality of partition plates are arranged in a descaling header body, all the partition plates are arranged in parallel at intervals, the descaling header body corresponding to every two adjacent partition plates forms a descaling pipe section, at least one water inlet is formed in the descaling header body corresponding to each descaling pipe section, and a water inlet branch pipe is arranged between each water inlet and the water inlet main pipe. And high-pressure water in the water inlet main pipe is introduced into the descaling pipe section. According to the utility model, the water can be effectively saved, the energy consumption and the operation cost are reduced, and meanwhile, the damage to equipment can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical engineering, relates to a descaling header, and particularly relates to a descaling header structure with adjustable descaling spray width. Background Art

[0002] The steel billet is oxidized at high temperature, and a dense scale will form on its surface. If this scale cannot be removed before rolling, it will affect the surface quality of the finished product during the rolling process. Therefore, before rolling the steel billet, the scale on the surface must be removed. Currently, descaling headers are usually arranged above and below the steel billet, and a number of descaling nozzles are arranged on the descaling headers, and the mechanical impact force of the high-pressure water ejected is used to remove the scale (high-pressure water descaling).

[0003] In the hot strip production line of steel mills, in order to meet different market demands, the widths of the products have different specifications. In order to ensure the descaling effect, the spray widths of the descaling headers are designed according to the maximum width of the steel billet. For example, in a 5000 mm hot rolling production line, the descaling width is designed according to the maximum steel billet width of 5000 mm. However, the width of the steel billet being rolled is often less than 5000 mm, and even some steel billets have a width of only 2500 mm. The high-pressure water on both sides of the descaling spray is wasted, and the high-pressure water on both sides of the descaling spray is wasted, and the energy consumption is high, resulting in an increase in operating costs. At the same time, there is no steel billet at the high-pressure water spraying position, and the high-pressure water sprayed by the descaling header located below the steel billet will hit the top plate of the descaling box body, and the high-pressure water sprayed by the descaling header located above the steel billet will hit the roller table for transporting the steel billet, causing equipment damage. Summary of the Invention

[0004] Aiming at the above deficiencies existing in the prior art, the purpose of the utility model is to provide a descaling header structure with adjustable descaling spray width, which can effectively save water, reduce energy consumption and operating costs, and at the same time avoid damage to equipment.

[0005] The technical solution of the utility model is realized as follows:

[0006] A descaling header structure with adjustable descaling spray width includes a descaling header body and a number of nozzles evenly distributed along the length direction of the descaling header body; it includes a main water inlet pipe. A number of partitions are arranged inside the descaling header body, and all the partitions are arranged in parallel at intervals. The descaling header body corresponding to two adjacent partitions forms a descaling pipe section. At least one water inlet is arranged on the descaling header body corresponding to each descaling pipe section, and a water inlet branch pipe is arranged between each water inlet and the main water inlet pipe to introduce the high-pressure water in the main water inlet pipe into the descaling pipe section.

[0007] Furthermore, all the partitions are symmetrically arranged along the midline of the descaling header body.

[0008] Furthermore, each descaling pipe section at both ends corresponds to a nozzle, and a switching valve is provided on the corresponding water inlet branch pipe.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] In the descaling header body of the utility model, a partition plate is arranged to divide the descaling header body into several descaling pipe sections. The middlemost descaling pipe section corresponds to the minimum width of the rolled product. Each descaling pipe section is connected to the water inlet main pipe through a water inlet branch pipe to introduce the high-pressure water in the water inlet main pipe into the descaling pipe section. A switching valve is provided on the water inlet branch pipe corresponding to the descaling pipe section except the middlemost descaling pipe section. The descaling spray width of the descaling header body is adjusted by opening and closing the switching valve, so that water can be saved, energy consumption and operation cost can be reduced. At the same time, the high-pressure water sprayed by the descaling header body will not be sprayed onto the top plate of the descaling box and the roller table, avoiding equipment damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 - Structural schematic diagram of the utility model.

[0012] Wherein: 1 - descaling header body; 2 - billet; 3 - middle water inlet branch pipe; 4 - water inlet main pipe; 5 - nozzle; 6 - partition plate; 7 - switching valve; 8 - water inlet branch pipes at both ends. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0014] See Figure 1 , a descaling header structure with adjustable descaling spray width, comprising a descaling header body 1 and a plurality of nozzles 5 evenly distributed along the length direction of the descaling header body 1; further comprising a water inlet main pipe 4. A plurality of partition plates 6 are arranged inside the descaling header body 1. All the partition plates 6 are arranged in parallel at intervals. The descaling header body 1 corresponding to two adjacent partition plates 6 forms a descaling pipe section. At least one water inlet is provided on the descaling header body 4 corresponding to each descaling pipe section. A water inlet branch pipe is arranged between each water inlet and the water inlet main pipe 4 to introduce the high-pressure water in the water inlet main pipe 4 into the descaling pipe section. All the partition plates are symmetrically arranged along the midline of the descaling header body. The middlemost descaling pipe section obtained is the longest, and its length corresponds to the minimum width of the billet 2. Correspondingly, the water inlet branch pipe connecting the middlemost descaling pipe section and the water inlet main pipe is the middle water inlet branch pipe 3, and the water inlet branch pipes connecting the plurality of descaling headers at both ends and the water inlet main pipe are the water inlet branch pipes 8 at both ends, and switching valves are provided on the water inlet branch pipes 8 at both ends.

[0015] When using this descaling header, when descaling a billet with a small width, the on-off valves of the two end water inlet branch pipes are all closed. As the width of the billet increases, the on-off valves on the two end water inlet branch pipes at both ends of the middle descaling pipe section can be opened according to the width of the billet, increasing the descaling spray width. Thus, the descaling spray width can be adjusted according to the width of the billet, and furthermore, water consumption can be saved, energy consumption can be reduced, and operating costs can be lowered. At the same time, the high-pressure water sprayed from the descaling header body will not be sprayed onto the top plate of the descaling box and the roller table, avoiding equipment damage.

[0016] As shown in the figure, in specific applications, 4 middle water inlet branch pipes are correspondingly provided for the middle descaling pipe section, and one end water inlet branch pipe is provided for each of the two end descaling pipe sections, and each descaling pipe section corresponds to a nozzle. The on-off valve here can be manually controlled or automatically controlled.

[0017] The utility model controls the water inlet of the two end descaling pipe sections by opening and closing the on-off valve, thereby controlling the descaling spray width. Adjust the descaling spray width, save water, and reduce energy consumption. For example, the approximate flow rate of a nozzle for heavy plate descaling is 113.8 L / min, the descaling pressure is 25 MPa, the power consumed by a nozzle is about 66 KW / h, and when adjusting the minimum number of nozzles at one time, the distance of one nozzle is adjusted left and right, and there are 4 nozzles for the upper and lower two groups of descaling headers. By reducing the output water volume, about 264 kW / h of power can be saved.

[0018] Finally, it should be noted that the above embodiments of the utility model are only examples for explaining the utility model, and are not limitations on the implementation manners of the utility model. For those of ordinary skill in the art, other different forms of changes and modifications can be made on the basis of the above description. It is impossible to list all the implementation manners here. Any obvious changes or modifications derived from the technical solutions of the utility model still fall within the protection scope of the utility model.

Claims

1. A descaling manifold structure with adjustable descaling spray width, comprising a descaling manifold body and a plurality of nozzles evenly distributed along the length direction of the descaling manifold body; characterized in that: It includes a water inlet main pipe, a plurality of partitions are arranged on the descaling pipe body, all the partitions are arranged in parallel, the descaling pipe bodies corresponding to two adjacent partitions constitute a descaling pipe section, at least one water inlet is arranged on the descaling pipe body corresponding to each descaling pipe section, and a water inlet branch pipe is arranged between each water inlet and the water inlet main pipe to introduce the high-pressure water in the water inlet main pipe into the descaling pipe section.

2. A descaling manifold structure with adjustable descaling spray width according to claim 1, characterized in that: All partitions are symmetrically arranged along the center line of the descaling header body.

3. The descaling manifold structure with adjustable descaling spray width according to claim 1, characterized in that: Each descaling pipe section at both ends corresponds to a nozzle, and a switch valve is arranged on the corresponding water inlet branch pipe.

Images