Water beam stand column structure of evaporative cooling system of walking beam type heating furnace

Abstract

The utility model discloses a water beam stand column structure of an evaporative cooling system of a walking beam type heating furnace, relates to the field of steel rolling and the field of machining, and overcomes the defects that an old structure is not easy to clean and scale deposit in a circular seam gap of a water beam is not easy to check. The water beam stand column structure of the walking beam type heating furnace evaporative cooling system is high in practicability, convenient to inspect and maintain, simple in structure, reliable in use and suitable for the heating furnace evaporative cooling system water beam stand column for producing steel such as wires, bars, medium-thickness plates and wide and thick plates, and the service life of the water beam stand column is greatly prolonged. The method has good applicability and good market application prospects.

Description

Technical Field

[0001] The utility model relates to the fields of steel rolling and mechanical processing, and specifically belongs to a patent for a water beam column structure of a vaporization cooling system of a walking beam type heating furnace. Background Art

[0002] Products such as wire rods, bars, medium and thick plates, and wide and thick plates in the steel industry need to be rolled after high-temperature heating, and the heating furnace is the equipment used to heat the steel billet. The heating furnace is one of the indispensable equipment in steel rolling production, which greatly affects the quality and technical and economic indicators of the product. In order to reduce production costs and reduce energy medium consumption, the cooling method of the water beam and column of the heating furnace generally adopts a vaporization cooling system. The cooling method of the water beam and column (including the core tube in the column) in the heating furnace is natural circulation cooling, and the circulation power comes from the density difference between the water in the core tube of the water beam column and the water in the annular gap between the core tube and the column. The water in the core tube is not directly heated, and the water in the annular gap between the outer wall of the core tube and the inner wall of the water beam column is roasted by the high temperature of the gas combustion in the heating furnace. The density of the water in the annular gap is less than the density of the water in the core tube, thus forming a natural cycle. The water beam column is connected in series in the water beam cooling circulation system, and the water rising outside the core tube participates in the water beam large circulation cooling water circulation system. Generally, a heating furnace with a length of 28680mm and a width of 13740mm (applicable billet specifications: 150mm×150mm×12000mm) is arranged with 5 rows of movable beams and 4 rows of fixed beams, with a total of 63 single water beam columns and 18 double columns (double columns are used for water inlet and return), and all single columns participate in the natural circulation of vaporization cooling. Restricted by the structural form of the water beam column, the annular gap between the outer side of the water beam column core tube and the inner wall of the water beam column is narrow, only 13.5mm. The softened water in the gap is vaporized by high temperature to form scale, which will cause the annular gap to be blocked after long-term accumulation, affecting the natural circulation process of vaporization cooling, and causing the metal structure of the water beam column to be overburned, creep, and damaged due to insufficient cooling. Once the water beam column in the heating furnace is damaged or leaking, it will take about 5 days to stop the furnace to handle the fault, which will have a great adverse impact on production. Therefore, a more suitable heating furnace water beam structure will enhance the stability of the operation of the heating furnace vaporization cooling system, extend the service life of the equipment, and improve the production and operation efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a water beam column structure of a walking beam type heating furnace vaporization cooling system in view of the above-mentioned practical problems. The new structure adopts a semicircular sewage discharge flange structure, which is different from the cup seat flange structure at the bottom of the old water beam column. It is easy to disassemble and remove the scale in the circular groove of the flange, and it is easy to clean and check the scale in the core tube of the water beam column and the annular gap between the outer wall of the core tube and the inner wall of the water beam column, so as to enhance the stability of the operation of the heating furnace vaporization cooling system, extend the service life of the equipment, and improve the production and operation efficiency.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A water beam column structure of a vaporization cooling system of a walking beam type heating furnace, comprising a water beam (1), a water beam column (2), a core tube (3), a furnace bottom structure (4) and a drain flange (5), wherein the water beam column (2) is provided at the bottom of the water beam (1), the core tube (3) is provided inside the water beam column (2), the water beam (1), the water beam column (2) and the core tube (3) are assembled and fixed on the furnace bottom structure (4), and the drain flange (5) is sealed and fastened at the bottom of the water beam column (2).

[0006] Preferably, the sewage discharge flange (5) is a semicircular structure.

[0007] Preferably, the drain flange (5) has an annular groove.

[0008] The beneficial effects of the utility model are:

[0009] After the development and application of the water beam column structure of the vaporization cooling system of the walking beam heating furnace of the utility model, the defect of the old structure that it is difficult to clean and check the scale accumulation in the gap of the water beam ring seam is solved. This defect will shorten the life of the water beam column and have a great impact on production. The water beam column structure of the vaporization cooling system of the walking beam heating furnace of the utility model is highly practical, easy to inspect and maintain, simple in structure, and reliable in use. It is suitable for the water beam column of the vaporization cooling system of the heating furnace for the production of wire, bar, medium and thick plate, wide and thick plate, etc., and has good applicability and good market application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 This is a schematic diagram of the sewage flange structure;

[0012] Figure 3 for Figure 2 A top view of

[0013] Figure numerals: 1. water beam, 2. water beam column, 3. core tube, 4. furnace bottom structure, 5. sewage flange. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0015] like Figure 1As shown, a water beam column structure of a walking beam type heating furnace vaporization cooling system includes a water beam 1, a water beam column 2, a core tube 3, a furnace bottom structure 4 and a drain flange 5. The water beam column 2 is provided at the bottom of the water beam 1, and the core tube 3 is provided inside the water beam column 2. The water beam 1, the water beam column 2 and the core tube 3 are combined and fixed on the furnace bottom structure 4, and the drain flange 5 is sealed and fastened at the bottom of the water beam column 2. The drain flange 5 is a semicircular structure with an annular groove on the drain flange 5. The water beam 1, the water beam column 2 and the core tube 3 are combined and fixed on the furnace bottom structure 4 according to the production process requirements and the design welding requirements. The drain flange 5 can be reliably sealed and fastened to the bottom of the water beam column 2, forming a set of water beam columns of the walking beam type heating furnace vaporization cooling system, which is used for continuous vaporization cooling of the water beam and the column in the heating furnace. Multiple sets of water beam column structures support the high-temperature steel billets in the heating furnace. Fixed water beams and movable water beams continuously move from the furnace entry end to the furnace exit end, meeting the heating process requirements of the steel billets in the heating furnace.

[0016] The manufacturing and assembly process of the utility model is as follows: the drain flange is made of high-pressure forged plate, the shape and size are designed to be semicircular, the contact part with the sealing gasket is processed into an annular groove according to the requirements of the high-pressure flange, and it is reliably sealed and installed at the bottom of the water beam column of the heating furnace, which greatly improves the cleaning efficiency of the scale in the water beam column, and can clean and check the scale in the annular gap inside the water beam, thereby enhancing the stability of the operation of the vaporization cooling system of the heating furnace and extending the service life of the equipment.

[0017] The utility model has a water beam column structure of a vaporization cooling system of a walking beam type heating furnace, which is highly practical, easy to inspect and maintain, simple in structure, and reliable in use. It is suitable for water beam columns of a vaporization cooling system of a heating furnace for the production of steel materials such as wires, bars, medium and thick plates, and wide and thick plates.

Claims

1. A water beam column structure of a vaporization cooling system of a walking beam heating furnace, characterized in that: The invention comprises a water beam (1), a water beam column (2), a core tube (3), a furnace bottom structure (4) and a sewage discharge flange (5), wherein the water beam column (2) is provided at the bottom of the water beam (1), the core tube (3) is provided inside the water beam column (2), the water beam (1), the water beam column (2) and the core tube (3) are assembled and fixed on the furnace bottom structure (4), and the sewage discharge flange (5) is installed at the bottom of the water beam column (2) in a sealing manner.

2. The water beam column structure of the vaporization cooling system of a walking beam type heating furnace according to claim 1 is characterized in that: The sewage discharge flange (5) is a semicircular structure.

3. The water beam column structure of the vaporization cooling system of a walking beam type heating furnace according to claim 1 or 2, characterized in that: An annular groove is provided on the sewage discharge flange (5).

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