Front wall of electric melting furnace

Abstract

The utility model discloses an electric melting furnace front wall which comprises a front wall body, an opening penetrating through the front wall body in the thickness direction of the front wall body is formed in the front wall body, a first cooling pipe communicated with an external cooling water circulation system is installed on the front wall body, and the first cooling pipe is arranged around the opening. According to the front wall of the electric melting furnace, the inner wall of the opening in the front wall body and the surrounding part of the opening of the front wall body are rapidly cooled through the arranged first cooling pipe, so that the erosion speed of the front wall is slowed down, and stable operation of the openings such as a feeding opening and a smoke exhaust opening is guaranteed; in addition, due to the arrangement of the second cooling pipe, other parts, except the opening, of the front wall body can be cooled.

Description

Technical Field

[0001] The utility model relates to the technical field of TFT-LCD liquid crystal glass substrate manufacturing, in particular to a front wall of an electric melting furnace. Background Art

[0002] In the production process of TFT-LCD liquid crystal glass substrates, the electric melting furnace equipment runs non-stop for 24 hours under the internal high temperature and high pressure environment. The high temperature and high pressure environment has a negative impact on the components of the electric melting furnace (expansion, deformation, erosion, and cracking). Because the front wall is usually equipped with openings such as the feeding port and the smoke exhaust port, the erosion effect on the front wall is obvious. Therefore, the front wall needs to be cooled and protected to slow down the erosion rate of the front wall and ensure the stable operation of the feeding port, the smoke exhaust port and other openings.

[0003] Currently, there is no effective cooling means for the front wall. Only a high-pressure cooling air duct is provided at the lower part of the front wall to cool the connection between the front wall and the pool wall, which cannot protect the front wall. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model provides a front wall of an electric melting furnace.

[0005] The utility model provides an electric melting furnace front wall, comprising a front wall body, the front wall body is provided with an opening penetrating along the thickness direction thereof, the front wall body is provided with a first cooling pipe connected with an external cooling water circulation system, and the first cooling pipe is arranged around the opening.

[0006] Preferably, the first cooling pipe includes a first tube body portion and a second tube body portion, the first tube body portion is spirally arranged along the radial direction of the opening, the second tube body portion is spirally arranged along the length direction of the opening, and the water inlet port of the first tube body portion is connected to the water outlet port of the second tube body portion.

[0007] Preferably, the water inlet port of the first cooling pipe is connected to the water outlet interface of the external cooling water circulation system, and the water outlet port of the first cooling pipe is connected to the return water interface of the external cooling water circulation system through the second cooling pipe installed on the front wall body.

[0008] Preferably, the front wall body includes a slate layer and a thermal insulation layer fixed on the outer wall of the slate layer, the slate layer and the thermal insulation layer are provided with coaxially arranged through holes along their thickness direction to form an opening, and the thermal insulation layer is provided with a first receiving groove for accommodating the first tube body portion on the first cooling tube and the second cooling tube on one side of the thermal insulation layer close to the slate layer.

[0009] Preferably, the cooling liquid flowing through the second tube body flows along the inner side of the slate layer toward the outer side of the thermal insulation layer.

[0010] Preferably, the cooling liquid flowing through the first tube body flows in a direction away from the opening axis.

[0011] The utility model provides an electric melting furnace front wall, which also includes a high temperature resistant pipe, which is coaxially fixed on the inner wall of the opening, and a second accommodating groove for accommodating the second pipe body is provided on the outer wall of the high temperature resistant pipe.

[0012] The electric melting furnace front wall proposed in the utility model can quickly cool down the inner wall of the opening on the front wall body and the surrounding part of the opening of the front wall body through the first cooling pipe, thereby slowing down the erosion speed of the front wall and ensuring the stable operation of openings such as the feeding port and the smoke exhaust port. In addition, the second cooling pipe can also cool down the rest of the front wall body except the opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A side cross-sectional view of the front wall of an electric melting furnace proposed in the utility model;

[0014] Figure 2 The utility model is a schematic diagram of the three-dimensional structure of a first cooling pipe in the front wall of an electric melting furnace. DETAILED DESCRIPTION

[0015] Reference Figure 1 The utility model proposes a front wall of an electric melting furnace, including a front wall body 1, on which an opening 11 is provided that penetrates along the thickness direction thereof, and is characterized in that a first cooling pipe 2 that is connected to an external cooling water circulation system is installed on the front wall body 1, and the first cooling pipe 2 is arranged around the opening 11.

[0016] When in use, the external coolant circulation system delivers coolant to the first cooling pipe 2 so as to achieve the purpose of rapidly cooling the area around the opening 11 on the front wall body 1 .

[0017] In the above embodiment, in order to further improve the cooling effect, the first cooling pipe 2 includes a first tube body portion 21 and a second tube body portion 22. The first tube body portion 21 is arranged in a spiral around the radial direction of the opening 11. When the coolant flows through the first tube body portion 21, the side wall of the front wall body 1 is cooled. The second tube body portion 22 is arranged in a spiral around the length direction of the opening 11. When the coolant flows through the second tube body portion 22, the inner wall of the opening 11 is cooled. The water inlet port of the first tube body portion 21 is connected to the water outlet port of the second tube body portion 22, so that the coolant can first cool the inner wall of the opening 11 and then cool the side wall of the front wall body 1. For details, refer to Figure 2 .

[0018] In the above embodiment, the water inlet port of the first cooling pipe 2 is connected to the water outlet interface of the external cooling water circulation system, and the water outlet port of the first cooling pipe 2 is connected to the return water interface of the external cooling water circulation system through the second cooling pipe 3 installed on the front wall body 1.

[0019] It should be further explained that the front wall body 1 includes a slate layer and a thermal insulation layer fixed on the outer wall of the slate layer. The slate layer is located on the side of the front wall body 1 close to the furnace, and the thermal insulation layer is located on the side of the front wall body 1 away from the furnace. The slate layer and the thermal insulation layer are provided with coaxially arranged through holes along their thickness direction to form an opening 11. To facilitate the installation of the first cooling pipe 2 and the second cooling pipe 3, the thermal insulation layer is provided with a first receiving groove for accommodating the first tube body 21 on the first cooling pipe 2 and the second cooling pipe 3 on the side close to the slate layer.

[0020] In the above embodiment, the temperature of the front wall body 1 near the furnace is higher and needs to be cooled first. Therefore, the coolant flowing through the second tube body portion 22 flows along the inner side of the slate layer toward the outer side of the insulation layer. The coolant first cools the through holes on the slate layer near the furnace on the front wall body 1, and then cools the through holes in the insulation layer, thereby achieving the purpose of comprehensively cooling the inner wall of the opening 11. Similarly, when the flue gas passes through the opening 11, the temperature of the part of the front wall body 1 near the opening 11 will be higher. Therefore, the coolant flowing through the first tube body portion 21 flows in a direction away from the axis of the opening 11.

[0021] The utility model proposes an electric melting furnace front wall, which, in order to better protect the first cooling pipe 2, also includes a high-temperature resistant pipe 4, which is coaxially fixed on the inner wall of the opening 11, and a second accommodating groove for accommodating the second pipe body 22 is provided on the outer wall of the high-temperature resistant pipe 2.

[0022] In the above embodiment, six parts are included, including a temperature monitoring device, a flow monitoring device, a DCS monitoring system, a data processing system, an alarm system, and an opening adjustment device. The temperature monitoring device and the flow monitoring device can continuously measure the temperature and flow information of the cooling water in the first cooling pipe and the second cooling pipe of the front wall, and transmit the data to the DCS monitoring system. The data processing system reads the detection data of the DCS monitoring system, reorganizes and integrates the data, and transmits the data to the alarm system. The alarm system is set with a monitoring range that needs attention. The temperature monitoring device, the flow monitoring device, the DCS monitoring system, the data processing system, the alarm system, and the opening adjustment device are all connected by high-frequency signal transmission lines.

[0023] The temperature monitoring device is placed at the water inlet port of the first cooling pipe 2 and the water outlet port of the second cooling pipe 3. The temperature monitoring device should be set at no less than 2 locations (when there is only one pipeline), and the specific number is determined by actual needs.

[0024] The flow monitoring device is placed at the water inlet port of the first cooling pipe 2 and the water outlet port of the second cooling pipe 3 .

[0025] The opening adjustment device can adjust the cooling water flow.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A front wall of an electric melting furnace, comprising a front wall body (1), wherein the front wall body (1) is provided with an opening (11) penetrating along the thickness direction thereof, wherein: A first cooling pipe (2) connected to an external cooling water circulation system is installed on the front wall body (1), and the first cooling pipe (2) is arranged around the opening (11).

2. The furnace front wall according to claim 1, characterized in that: The first cooling pipe (2) comprises a first tube body portion (21) and a second tube body portion (22); the first tube body portion (21) is arranged in a spiral arrangement along the radial direction of the opening (11); the second tube body portion (22) is arranged in a spiral arrangement along the length direction of the opening (11); and a water inlet port of the first tube body portion (21) is connected to a water outlet port of the second tube body portion (22).

3. The furnace front wall according to claim 2, characterized in that: The water inlet port of the first cooling pipe (2) is connected to the water outlet port of the external cooling water circulation system, and the water outlet port of the first cooling pipe (2) is connected to the water return port of the external cooling water circulation system through the second cooling pipe (3) installed on the front wall body (1).

4. The furnace front wall according to claim 3, characterized in that: The front wall body (1) comprises a slate layer and a thermal insulation layer fixed on the outer wall of the slate layer, the slate layer and the thermal insulation layer are provided with coaxially arranged through holes along their thickness direction to form an opening (11), and the thermal insulation layer is provided with a first receiving groove for receiving a first tube body (21) on a first cooling tube (2) and a second cooling tube (3) on a side of the thermal insulation layer close to the slate layer.

5. The furnace front wall according to claim 4, characterized in that: The cooling liquid flowing through the second tube body (22) flows along the inner side of the stone slab layer toward the outer side of the thermal insulation layer.

6. The furnace front wall according to claim 4, characterized in that: The cooling liquid flowing through the first tube body portion (21) flows in a direction away from the axis of the opening (11).

7. The furnace front wall according to claim 2, characterized in that: It also comprises a high temperature resistant pipe (4), which is coaxially fixed on the inner wall of the opening (11), and a second receiving groove for receiving the second pipe body (22) is provided on the outer wall of the high temperature resistant pipe (4).

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