Door post cooling structure of steel rolling heating furnace

Abstract

The utility model discloses a steel rolling heating furnace door post cooling structure which comprises bearing I-shaped steel, a stainless steel connecting plate is welded on the bearing I-shaped steel, a stainless steel square tube is welded on the stainless steel connecting plate, the stainless steel square tube is located in the bearing I-shaped steel in a clamping mode, and an anchoring nail is arranged on the stainless steel square tube. And refractory materials are mounted on the anchoring nails. The utility model relates to the field of steel rolling production and equipment use, in particular to a door post cooling structure of a steel rolling heating furnace.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling production and equipment use, specifically to a cooling structure for the door column of a steel rolling heating furnace. Background Technology

[0002] The main function of the furnace door pillars is to support the entire furnace door frame. Because they are constantly subjected to high-temperature flame erosion and radiation at the furnace door edge, they need to be cooled by water to reduce their temperature and ensure sufficient structural strength. If the water flow inside the pillars decreases or there is a lack of water, it may cause the pillars to fail and lead to the collapse of the entire furnace door frame.

[0003] The gatepost water-cooling structure is assembled and welded on-site, resulting in long welds, inconsistent weld quality, and the use of carbon steel plates, which are not corrosion-resistant. Although pressure testing and leak detection were performed after installation, the weld areas experienced varying degrees of leakage due to the cumulative effects of long-term vibration, high temperatures, and corrosion. Leaking water from the gateposts directly drips onto the slabs, affecting their heating quality and causing cracking and detachment of surrounding refractory material. If the leakage becomes severe, it can directly lead to refractory material spalling at the furnace doorway, causing temperature control issues in the soaking chamber.

[0004] Once the water-cooled structure of the portal column leaks, it is very difficult to repair in the short term. A complete repair requires shutting down the furnace, while a temporary repair requires stopping production, which is very detrimental to production organization. Utility Model Content

[0005] The technical problem this invention aims to solve is that existing designs are prone to water leakage after long-term use. Once the water-cooled structure of the door column leaks, it is very difficult to repair in the short term. Complete repair requires shutting down the furnace, while temporary repair requires stopping production, which is very detrimental to production organization.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: This utility model is a cooling structure for the door column of a steel rolling heating furnace, including a load-bearing I-beam, a stainless steel connecting plate welded on the load-bearing I-beam, a stainless steel square tube welded on the stainless steel connecting plate, the stainless steel square tube being snapped into the load-bearing I-beam, and anchoring nails provided on the stainless steel square tubes, with refractory material installed on the anchoring nails.

[0007] Furthermore, the stainless steel square tube is symmetrically provided with baffles, which are located on both sides of the refractory material.

[0008] Furthermore, the stainless steel connecting plates are symmetrically arranged in multiple sets, and multiple sets are spaced apart on the upper and lower parts of the stainless steel connecting plates.

[0009] Furthermore, the anchoring nails are evenly spaced in multiple groups.

[0010] Furthermore, cooling water flows from bottom to top inside the stainless steel square tube.

[0011] The beneficial effects of this utility model using the above structure are as follows: Traditionally, a plain steel cover plate is welded to a load-bearing I-beam to form a sealed cavity. Cooling water flows through the cavity to cool the load-bearing I-beam. However, long-term use easily leads to water leakage. Once the water-cooled structure of the portal column leaks, repairing it in the short term is very difficult. Complete repair requires furnace shutdown, and temporary repair requires production stoppage, both of which are very detrimental to production organization. Using stainless steel square tubing avoids these problems. Furthermore, stainless steel connecting plates can fix the stainless steel square tubing and also transfer heat. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a steel rolling heating furnace door column cooling structure proposed in this utility model;

[0013] Figure 2 This is a schematic diagram of the cooling structure of the door column of a steel rolling heating furnace proposed in this utility model from other angles;

[0014] Figure 3 This is a cross-sectional view of the refractory material portion of the cooling structure of the door column of a steel rolling heating furnace proposed in this utility model.

[0015] Among them, (1) load-bearing I-beams, (2) stainless steel connecting plates, (3) stainless steel square tubes, (4) anchor nails, (5) refractory materials, and (6) baffles. Detailed Implementation

[0016] As per the instruction manual Figures 1-3 As shown, this utility model is a cooling structure for the door column of a steel rolling heating furnace, including a load-bearing I-beam (1), which is responsible for supporting the entire furnace door frame. A stainless steel connecting plate (2) is welded on the load-bearing I-beam (1), and a stainless steel square tube (3) is welded on the stainless steel connecting plate (2). The stainless steel square tube (3) is fitted inside the load-bearing I-beam (1). Anchor nails (4) are provided on the stainless steel square tube (3) and fixed by welding. Refractory material (5) is installed on the anchor nails (4). The refractory material (5) can block some of the heat.

[0017] As per the instruction manual Figures 1-2 As shown, the stainless steel square tube (3) is symmetrically provided with baffles (6), which are located on both sides of the refractory material (5) to stabilize the refractory material (5).

[0018] As per the instruction manual Figures 1-2 As shown, multiple sets of stainless steel connecting plates (2) are symmetrically arranged, and multiple sets of stainless steel connecting plates (2) are spaced apart vertically.

[0019] As per the instruction manual Figure 3 As shown, multiple sets of anchor nails (4) are evenly spaced, which can be matched with the area of ​​refractory material (5).

[0020] As per the instruction manual Figures 1-2 As shown, cooling water flows from bottom to top inside the stainless steel square tube (3).

[0021] In practical use: The load-bearing I-beam (1) is responsible for supporting the entire furnace door frame. It is basically impossible for the stainless steel square tube (3) to carry away 100% of the heat transferred from it. Some of the heat will still be transferred directly or indirectly to the load-bearing I-beam (1). Therefore, the stainless steel connecting plate (2) connects the load-bearing I-beam (1) and the stainless steel square tube (3). On the one hand, it can fix the stainless steel square tube (3), and on the other hand, it can transfer 90% of the heat of the load-bearing I-beam (1) to the cooling water in the square tube.

[0022] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cooling structure for the door column of a steel rolling heating furnace, comprising a load-bearing I-beam (1), characterized in that: A stainless steel connecting plate (2) is welded onto the load-bearing I-beam (1), and a stainless steel square tube (3) is welded onto the stainless steel connecting plate (2). The stainless steel square tube (3) is fitted inside the load-bearing I-beam (1). Anchor nails (4) are provided on the stainless steel square tube (3), and refractory material (5) is installed on the anchor nails (4).

2. The cooling structure for the door column of a steel rolling heating furnace according to claim 1, characterized in that: The stainless steel square tube (3) is symmetrically provided with baffles (6), which are located on both sides of the refractory material (5).

3. The cooling structure for the door column of a steel rolling heating furnace according to claim 1, characterized in that: The stainless steel connecting plate (2) is symmetrically arranged in multiple sets, and the stainless steel connecting plate (2) is arranged in multiple sets at intervals above and below.

4. The cooling structure for the door column of a steel rolling heating furnace according to claim 1, characterized in that: The anchor nails (4) are evenly spaced in multiple groups.

5. The cooling structure for the door column of a steel rolling heating furnace according to claim 2, characterized in that: Cooling water flows from bottom to top inside the stainless steel square tube (3).

Images