Device for preventing thermal deformation of intermediate cooling system header

Abstract

The utility model discloses a device for preventing thermal deformation of a header of an intermediate cooling system, which comprises an intermediate cooling header control valve, a bypass pipeline is additionally designed and mounted on the header at the front end and the rear end of the control valve, the bypass pipeline is made of a stainless steel pipe, the inner diameter of the pipe is 6cm, and a manual ball valve is mounted on the bypass pipeline. The device can prevent the header from being heated, deformed and scrapped, can maintain normal production, shortens fault time and improves efficiency.

Description

Technical Field

[0001] The utility model relates to a device for preventing a header of an intermediate cooling system from being deformed due to heat. Background Art

[0002] Intermediate cooling is an important equipment to improve the production rhythm. It can quickly reduce the temperature to the start temperature of finishing rolling by reciprocating water cooling of the slab after rough rolling. When the control valve of the cooling control system fails, the header cannot be filled with water. When the hot steel passes through, it expands due to heat and deforms. The deformed header is higher than the horizontal plane of the roller table, and the slab cannot pass through, causing steel jam. Summary of the invention

[0003] The utility model aims to provide a device for preventing the header of an intermediate cooling system from being deformed by heat, which can prevent the header from being scrapped due to heat deformation, maintain normal production, shorten failure time and improve efficiency.

[0004] The technical solution adopted by the utility model is a device for preventing the intermediate cooling system header from being deformed by heat, comprising an intermediate cooling header control valve, and a bypass pipe is added and installed on the headers at the front end and the rear end of the control valve. The bypass pipe is made of a stainless steel pipe with an inner diameter of 6 cm, and a manual ball valve is installed on the bypass pipe.

[0005] During normal production, the bypass manual valve is in a normally open state, and the opening is adjusted to 35%-60%, so that the header is always filled with water, and the lower header nozzle is kept to produce 1-3mm water injection. Even if the header automatic control valve fails and the header cannot spray water, the header water tank is kept full of water for a long time, which plays a role in cooling the header and prevents it from being deformed by heat. This solves the problem of forced shutdown of the header due to heat deformation caused by failure of the control valve of the intermediate cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is a schematic diagram of the main view connection structure of the utility model. DETAILED DESCRIPTION

[0007] A device to prevent the intermediate cooling system header from being deformed by heat, such as Figure 1 As shown, it includes an intermediate cooling header control valve 2, and a bypass pipe 3 is designed and installed on the header 1 at the front end and the rear end of the control valve 2. The bypass pipe 3 is made of a stainless steel pipe with an inner diameter of 6 cm. A manual ball valve 4 is installed on the bypass pipe 3.

Claims

1. A device for preventing the intermediate cooling system header from being deformed by heat, comprising an intermediate cooling header control valve, characterized in that: A bypass pipe is designed and installed on the headers at the front and rear ends of the control valve. The bypass pipe is made of stainless steel with an inner diameter of 6 cm. A manual ball valve is installed on the bypass pipe.

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