Heating furnace water seal device with double water seal structures

Abstract

The utility model relates to the technical field of heating furnace water seal devices with double water seal structures, in particular to a heating furnace water seal device with a double water seal structure, which is characterized by comprising a heating furnace, a water beam upright post, an upright post support, a water seal device and a stepping machine, a plurality of groups of water beam stand columns penetrate through the bottom of the heating furnace; the bottom of the water beam stand column is connected with a stepping machine. A water seal device is arranged at the joint of the water beam stand column and the stepping machine; the water seal device comprises a large skirt cover, a small skirt cover, a water seal tank inner square tube and a water seal tank body; the water seal tank body is arranged on the stand column support, the water beam stand column penetrates through the middle of the water seal tank body, and the water seal tank inner square pipe is installed in the water seal tank body and on the outer side of the water beam stand column. A stand column support is arranged in the middle of the stand column. A small skirt cover is arranged on the side face of the stand column support, and a large skirt cover is arranged outside the small skirt cover and on the inner side of the water seal tank body. The large skirt cover is welded outside the water beam stand column.

Description

Technical Field

[0001] This utility model relates to the technical field of water seal devices for heating furnaces with a double water seal structure, and in particular to a water seal device for heating furnaces with a double water seal structure. Background Technology

[0002] A walking beam reheating furnace in the metallurgical industry is an industrial furnace in which steel billets are transported by walking beam machinery within the furnace, while a combustible gas is burned inside the furnace to release heat and dynamically heat the billets during transport. Because the furnace maintains a high temperature of 800-1200℃ for extended periods, the walking beam machinery drives water-supported columns outside the furnace to carry the billets in a walking motion. There are openings at the bottom of the furnace for the water-supported columns to extend into the furnace from the outside and perform the walking motion. To improve the heating efficiency, a water seal device is installed between the bottom of the furnace and the water-supported columns. Water is used to achieve dynamic and static sealing during the column's walking motion, preventing heat loss and combustible gas leakage, while also protecting the walking beam machinery at the furnace bottom from deformation and damage due to high-temperature baking.

[0003] The water seal device on the outside of the water beam column of the original walking beam heater is a single water seal structure that uses water to seal the gap between the large skirt and the water seal tank. The gap between the square tube in the water seal tank and the water beam column on the inside of the water seal device is formed by welding together to form a sealed structure, thus creating a sealed partition between the inside and outside of the heater. However, in practical applications, due to the long-term high temperature inside the heating furnace, the square tube inside the water seal trough is in constant contact with the heat inside the furnace. After being heated, it will undergo thermal expansion. However, the square tube is a fixed structure welded to the column support and the stepping machine, and there is no space for thermal expansion. Due to the long-term thermal expansion and contraction caused by the heating furnace heating and cooling, the weld of the square tube itself cracks, the square tube and the water seal trough deform, and the weld at the connection point cracks. Because of the difficulty in inspection and maintenance, the water inside the water seal trough will leak from the cracked parts, causing the gap between the large skirt and the water seal trough to lack water and lose its sealing function. A large amount of heat and combustible gas inside the heating furnace will overflow through the gap between the large skirt and the water seal trough, causing heat loss inside the furnace, reducing the efficiency of the heating furnace, and causing the stepping machine to deform and be damaged by heat.

[0004] Against this backdrop, the water seal device of the heating furnace was improved. The structure of the square tube inside the original water seal tank was optimized, and a small skirt was added. The water in the water seal tank is used to seal the gap between the inner square tube and the small skirt. Practical application has proven that the improved water seal device has a better effect and solves the shortcomings of the original water seal structure. Utility Model Content

[0005] To overcome existing shortcomings, the improved water seal device structure aims to replace the original welded sealing structure of the inner square tube and column support of the water seal groove with a separate water seal structure, transforming the single-water-seal structure into a double-water-seal structure. The improved water seal device's skirt is a heat-receiving component; providing sufficient space for thermal expansion and contraction effectively solves the problems of deformation and weld cracking caused by thermal expansion of the skirt and the inner square tube of the water seal groove. Simultaneously, it solves the leakage problem of the water seal device, improves the sealing effect of the heating furnace water seal device, reduces heat loss and combustible gas leakage from the furnace, increases heating efficiency, and reduces fuel consumption. Furthermore, the water seal device isolates the heat radiation from the furnace bottom walking mechanism, effectively preventing deformation and damage to the mechanism and reducing equipment wear.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a water seal device for a heating furnace with a double water seal structure, including a heating furnace, a water beam column, a column support, a water seal device, and a stepping machine; several sets of water beam columns pass through the bottom of the heating furnace; the bottom of the water beam column is connected to the stepping machine; a water seal device is provided at the connection between the water beam column and the stepping machine; the water seal device includes a large skirt cover, a small skirt cover, a square tube inside the water seal groove, and a water seal groove body; the water seal groove body is set on the column support, with the water beam column passing through the middle, and the square tube inside the water seal groove is installed inside the water seal groove body and outside the water beam column; a column support is provided in the middle of the column; a small skirt cover is provided on the side of the column support, and a large skirt cover is provided outside the small skirt cover and inside the water seal groove body; the large skirt cover is welded to the outside of the water beam column.

[0007] According to another embodiment of the present invention, a sealing water is provided between the water seal tank and the square tube inside the water seal tank.

[0008] According to another embodiment of the present invention, the upper end of the skirt cover and the column support are welded together, and the lower end of the skirt cover is lower than the lowest water level of the sealing water in the water seal tank.

[0009] According to another embodiment of the present invention, the height of the square tube inside the water seal groove is higher than the highest water level of the sealing water inside the water seal groove.

[0010] According to another embodiment of the present invention, the lower end of the large skirt cover has the same length as the lower end of the small skirt cover.

[0011] The beneficial effects of this utility model are that the water seal device with the double water seal structure of this invention can effectively solve the problem of water seal groove leakage and loss of sealing effect caused by the deformation and cracking of the internal components of the water seal device due to thermal expansion and contraction. The double water seal structure improves the sealing effect of the water seal device of the heating furnace, which can greatly reduce heat loss and combustible gas leakage in the heating furnace, improve the heating efficiency of the heating furnace, and reduce the fuel consumption of the heating furnace. At the same time, the water seal device isolates the high temperature radiation of the furnace heat to the furnace bottom mechanical equipment, which plays a role in protecting the furnace bottom stepping mechanical equipment, effectively reducing the deformation and damage of the furnace bottom stepping mechanical equipment, and reducing equipment consumption. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a connection diagram of the water seal device;

[0015] Figure 3 This is a schematic diagram of the water seal device;

[0016] Figure 4 This is a partial schematic diagram before the improvement.

[0017] In the diagram: 1. Heating furnace; 2. Water beam column; 3. Column support; 4. Water seal device; 5. Stepping machine; 6. Large skirt cover; 7. Small skirt cover; 8. Square tube inside the water seal trough; 9. Water seal trough body; 10. Sealing water. Detailed Implementation

[0018] like Figure 1 This is a schematic diagram of the structure of this utility model, a water seal device for a heating furnace with a double water seal structure, characterized by including a heating furnace 1, water beam columns 2, column supports 3, a water seal device 4, and a stepping machine 5; several sets of water beam columns 2 are passed through the bottom of the heating furnace 1; the bottom of the water beam columns 2 is connected to the stepping machine 5; a water seal device 4 is provided at the connection between the water beam columns 2 and the stepping machine 5; the water seal device 4 includes a large skirt cover 6, a small skirt cover 7, a square tube 8 inside the water seal groove, and a water seal groove body 9; the water seal groove body 9 is set on the column support 3, with the water beam columns 2 passing through the middle, and the square tube 8 inside the water seal groove body 9 is installed inside the water seal groove body 9 and outside the water beam column; a column support 3 is provided in the middle of the column; a small skirt cover 7 is provided on the side of the column support 3, and a large skirt cover 6 is provided outside the small skirt cover 7 and inside the water seal groove body 9; the large skirt cover 6 is welded to the outside of the water beam columns 2.

[0019] According to another embodiment of the present invention, a sealing water 10 is provided between the water seal tank 9 and the square tube 8 inside the water seal tank.

[0020] According to another embodiment of the present invention, the upper end of the small skirt cover 7 and the column support 3 are welded together, and the lower end of the small skirt cover 7 is lower than the lowest water level of the sealing water 10 inside the water seal tank 9.

[0021] According to another embodiment of the present invention, the height of the square tube 8 inside the water seal trough is higher than the highest water level of the sealing water 10 inside the water seal trough body 9.

[0022] According to another embodiment of the present invention, the lower end of the large skirt cover 6 has the same length as the lower end of the small skirt cover 7.

[0023] Specifically, the welding connection sealing structure between the square tube inside the water seal trough and the column support of the original water seal device is improved. The length of the square tube 8 inside the water seal trough is shortened to ensure that the length of the square tube 8 inside the water seal trough is higher than the highest water level in the water seal trough body 9. A small skirt 7 is added between the outer side of the square tube 8 inside the water seal trough and the inner side of the large skirt 6. The upper end of the small skirt 7 is welded to the column support 3, ensuring that the lower end of the small skirt 7 is lower than the lowest water level in the water seal trough body 9. The water in the water seal trough body 9 automatically fills and seals the gap between the small skirt 7 and the square tube 8 inside the water seal trough, forming an inner water seal structure. This improvement allows sufficient space for thermal expansion and contraction between the small skirt 7 and the square tube 8 inside the water seal trough, preventing deformation or weld cracking and leakage of the water seal trough body 9 and the inner square tube 8 due to thermal expansion and contraction. This solves the leakage problem of the water seal trough and ensures the sealing effect of the water seal structure. Simultaneously, the original outer water seal structure between the large skirt cover 6 and the water seal tank 9 is retained, forming a water seal device with an inner and outer double water seal structure. This can greatly reduce heat loss and combustible gas leakage inside the furnace, improve the heating efficiency of the furnace, and reduce fuel consumption. At the same time, the water seal device isolates the high-temperature radiation of heat from the furnace to the furnace bottom mechanical equipment, protecting the furnace bottom walking mechanism and effectively reducing deformation and damage to the furnace bottom walking mechanism, thus reducing equipment consumption.

[0024] The above description is illustrative only and not restrictive of this utility model. Those skilled in the art will understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all such modifications, variations or equivalents will fall within the protection scope of this utility model.

Claims

1. A heating furnace water seal device of a double water seal structure, characterized by, Including heating furnace (1), water beam column (2), column support (3), water seal device (4) and step machine (5);The bottom of the heating furnace (1) is penetrated by several groups of water beam column (2);The water beam column (2) bottom is connected with step machine (5);The water beam column (2) and step machine (5) connection is equipped with water seal device (4);The water seal device (4) includes large skirt cover (6), small skirt cover (7), water seal groove inner square tube (8) and water seal groove body (9);The water seal groove body (9) is set on the column support (3), and the middle is penetrated by the water beam column (2), the water seal groove inner square tube (8) is installed in the water seal groove body (9), and the water beam support outside;The column is equipped with column support (3) in the middle;The column support (3) side is equipped with small skirt cover (7), and the large skirt cover (6) is arranged on the outside of the small skirt cover (7) and the inside of the water seal groove body (9);The large skirt cover (6) is welded on the outside of the water beam column (2).

2. The double water seal structure's heating furnace water seal device according to claim 1, characterized in that, Sealing water (10) is arranged between the water seal groove body (9) and the water seal groove inner square tube (8).

3. The double water seal structure of the heating furnace water seal device according to claim 1, characterized in that, The upper end of the small skirt cover (7) and the column support (3) are connected by welding, and the lower end of the small skirt cover (7) is lower than the lowest water level of the sealing water (10) in the water seal groove body (9).

4. The dual water seal structure of the heating furnace water seal device according to claim 1, characterized in that, The height of the water seal groove inner square tube (8) is higher than the highest water level of the sealing water (10) in the water seal groove body (9).

5. The dual water seal structure of the heating furnace water seal device according to claim 1, characterized in that, The lower end of the large skirt cover (6) is consistent with the lower end of the small skirt cover (7) in length.

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