A melting furnace pool cooling system

Abstract

The present invention provides a melting furnace pool cooling system, belonging to the field of float glass technology. The system comprises a furnace and a pool bottom air cooling system located at the bottom of the furnace, as well as a pool wall air cooling system for reducing the temperature difference between the two sides of the furnace. The pool wall air cooling system includes several pool wall air cooling units, each of which comprises two temperature sensing boxes located outside the two side walls of the furnace and a cooling water tank located underground. The temperature sensing boxes are provided with several breathing tubes connected to the atmosphere, which are connected to the corresponding temperature sensing boxes. The temperature sensing boxes and the cooling water tank are connected by ventilation tubes. The connection point of the ventilation tubes on the cooling water tank is above the liquid level of the cooling water tank; the position above the liquid level of the cooling water tank is connected to an air intake pipe extending above the ground. The present invention has the advantages of low cost.

Description

Technical Field

[0001] The invention belongs to the technical field of float glass and relates to a melting furnace pool cooling system. Background Art

[0002] With the rapid development of the glass industry, extending kiln life has become a trend to maximize kiln utilization and save costs. In recent years, some glass companies have experienced kiln bottom erosion, particularly in ultra-clear kilns producing high-end products. Some kilns have even experienced complete erosion of their bottom tiles, with the erosion starting to damage large clay bricks, yet production continues. In order to ensure production safety, cooling of the melting furnace pool becomes inevitable. However, the distance from the bottom of the furnace pool to the ground below is generally 3-8 meters. At present, only the wind cooling system of the bottom of the furnace is designed, and the side walls of the furnace are not treated. As we all know, there is a north-south side of the furnace. This is a common name in the industry. Specifically, the long kiln line has one side close to the outdoors and one side close to the indoors in the workshop, which are referred to as the north and south sides. In winter, the side close to the outdoors is the low-temperature side, and the other side is the high-temperature side. In summer, the side close to the outdoors is the high-temperature side, and the other side is the low-temperature side. The temperature difference between the north and south sides increases the difficulty of cooling the bottom of the pool, and the important factor accelerating corrosion is local high temperature. As we all know, the multi-pipe air-cooling structure adopted in the bottom of the pool is a multi-point cooling method. The existence of the temperature difference between the north and south sides increases the difficulty of cooling the bottom of the pool. At present, there is no good north-south temperature difference control method, especially a low-cost temperature difference weakening method. Summary of the Invention

[0003] The purpose of the present invention is to provide a melting furnace pool cooling system in view of the above-mentioned problems existing in the prior art. The technical problem to be solved by the present invention is how to reduce the furnace cooling cost.

[0004] The objectives of the present invention can be achieved through the following technical solutions: a melting furnace pool cooling system, comprising a kiln and a pool bottom air cooling system located at the bottom of the kiln, characterized in that it also includes a pool wall air cooling system for reducing the temperature difference on both sides of the kiln, the pool wall air cooling system includes a plurality of pool wall air cooling units, the pool wall air cooling units include two temperature sensing boxes respectively located outside the two side walls of the kiln and a cooling water tank located underground, the temperature sensing boxes are provided with a plurality of breathing tubes connected to the atmosphere, the breathing tubes are connected to the corresponding temperature sensing boxes, the temperature sensing boxes and the cooling water tanks are connected through ventilation pipes, the connection position of the ventilation pipe on the cooling water tank is above the liquid level of the cooling water tank; the position above the liquid level of the cooling water tank is connected to an air intake pipe extending above the ground.

[0005] Furthermore, the cooling water tank is located below the ground below the bottom of the kiln pool.

[0006] Furthermore, the pool wall air cooling units are arranged along the length direction of the kiln.

[0007] Furthermore, each pool wall air cooling unit shares the same cooling water tank.

[0008] This solution uses geothermal energy to achieve energy-free indirect air cooling of the side walls of the kiln. Specifically, the temperature of the air inlet pipe at a certain distance from the bottom of the kiln pool is lower than the temperature of the side walls of the kiln. According to the siphon principle, the air pressure in the cooling water tank is lower than the air pressure in the temperature sensing box. The air flow enters the cooling water tank through the air inlet pipe, then enters the temperature sensing box through the cooling water tank, and is discharged from the breathing pipe. In this process, not only can the air flow discharged from the breathing pipe on the top of the high-temperature box on the high-temperature side of the kiln be greater than that on the low-temperature side, that is, the cooling efficiency of the high-temperature side is higher than that of the low-temperature side, but the hot air flow from the bottom of the pool can also be extracted, all of which utilize the lower temperature in the cooling water tank. In other words, this solution does not require energy consumption, makes full use of underground heat dissipation, has a simple structure, and requires almost no maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the cooling system in the cross-sectional direction of the kiln.

[0010] Figure 2 It is a structural diagram of the cooling system when viewed from the side of the kiln.

[0011] In the picture, 1. Temperature sensor box; 2. Cooling water tank; 3. Breathing tube; 4. Ventilation pipe; 5. Air intake pipe; 6. Kiln. DETAILED DESCRIPTION

[0012] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0013] like Figure 1 and Figure 2 The melting furnace pool cooling system shown includes a kiln 6 and a pool bottom air cooling system located at the bottom of the kiln 6, and also includes a pool wall air cooling system for reducing the temperature difference on both sides of the kiln 6. The pool wall air cooling system includes a number of pool wall air cooling units. The pool wall air cooling unit includes two temperature sensing boxes 1 respectively located outside the two side walls of the kiln 6 and a cooling water tank 2 located underground. The temperature sensing box 1 is provided with a number of breathing tubes 3 connected to the atmosphere. The breathing tubes 3 are connected to the corresponding temperature sensing boxes 1. The temperature sensing box 1 and the cooling water tank 2 are connected through a ventilation pipe 4. The connection position of the ventilation pipe 4 on the cooling water tank 2 is located above the liquid level of the cooling water tank 2; the position above the liquid level of the cooling water tank 2 is connected to an air intake pipe 5 extending above the ground.

[0014] The cooling water tank 2 is located below the ground below the bottom of the kiln 6; the pool wall air cooling units are arranged along the length direction of the kiln 6.

[0015] Each pool wall air cooling unit shares the same cooling water tank 2. Of course, a separate cooling water tank 2 or multiple cooling water tanks or all cooling water tanks can be shared as needed.

[0016] This solution uses geothermal energy to achieve energy-free indirect air cooling of the side walls of the kiln 6. Specifically, the temperature at the inlet position of the air inlet pipe 5, which is a certain distance away from the bottom of the kiln 6 pool, is lower than the temperature of the side walls of the kiln 6. According to the siphon principle, the air pressure in the cooling water tank 2 is lower than the air pressure in the temperature sensing box 1. The air flow enters the cooling water tank 2 through the air inlet pipe 5, and then enters the temperature sensing box 1 through the cooling water tank 2 and is discharged from the breathing pipe 3. In this process, not only can the air flow discharged from the breathing pipe 3 on the top of the high-temperature box on the high-temperature side of the kiln 6 be greater than that on the low-temperature side, that is, the cooling efficiency of the high-temperature side is higher than that of the low-temperature side, but the hot air flow from the bottom of the pool can also be extracted, all of which utilize the lower temperature in the cooling water tank 2. In other words, this solution does not require energy consumption, makes full use of underground heat dissipation, has a simple structure, and requires almost no maintenance.

[0017] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A melting furnace pool cooling system, comprising a furnace (6) and a pool bottom air cooling system located at the bottom of the furnace (6), characterized in that: The invention also includes a pool wall air cooling system for reducing the temperature difference between the two sides of the kiln (6), wherein the pool wall air cooling system includes a plurality of pool wall air cooling units, wherein the pool wall air cooling units include two temperature sensing boxes (1) respectively located outside the two side walls of the kiln (6) and a cooling water tank (2) located underground, wherein the temperature sensing box (1) is provided with a plurality of breathing tubes (3) connected to the atmosphere, and the breathing tubes (3) are connected to the corresponding temperature sensing box (1), and the temperature sensing box (1) and the cooling water tank (2) are connected through a ventilation pipe (4), and the connection position of the ventilation pipe (4) on the cooling water tank (2) is located above the liquid level of the cooling water tank (2); the position above the liquid level of the cooling water tank (2) is connected to an air intake pipe (5) extending above the ground.

2. A melting furnace pool cooling system according to claim 1, characterized in that: The cooling water tank (2) is located below the ground below the bottom of the kiln (6).

3. A melting furnace pool cooling system according to claim 1, characterized in that: The pool wall air cooling units are arranged along the length direction of the kiln (6).

4. A melting furnace pool cooling system according to claim 1, characterized in that: Each pool wall air cooling unit shares the same cooling water tank (2).

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