Rapid flue gas heating structure of substrate glass tank furnace

Abstract

The utility model discloses a flue gas rapid heating structure of a substrate glass tank furnace, and belongs to the technical field of substrate glass manufacturing. Comprising an outer shell, an air inlet pipeline and an air outlet pipeline are connected to the outer shell, a first butterfly valve and a second butterfly valve are arranged on the air inlet pipeline and the air outlet pipeline respectively, the air inlet pipeline is used for being connected with an air outlet of an absorption tower, and the air outlet pipeline is used for being connected with an inlet expansion joint of a smoke exhaust fan. A heating assembly is arranged in the outer shell. The heating assembly rapidly heats the wet flue gas entering the outer shell, the heated wet flue gas enters the smoke exhaust fan from the gas outlet pipeline, the heated wet flue gas enters the smoke exhaust fan, no crystal exists at blades of the smoke exhaust fan, the smoke exhaust fan operates stably and does not vibrate, and the smoke exhaust fan can be used normally. The smoke exhaust fan does not need to be frequently switched, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of substrate glass manufacturing, in particular to a substrate glass pool furnace fume rapid heating structure. Background Art

[0002] In the production of liquid crystal glass, the pool furnace melts the glass and produces waste gas, which is then discharged in compliance with the emission standards through urea spraying, SCR treatment, cooling tower, absorption tower, heater, fan, wet dust collector and chimney.

[0003] Because the flue gas is very humid after passing through urea spraying, SCR treatment, cooling tower and absorption tower, the temperature changes greatly when it enters the smoke exhaust fan. The wet flue gas is easy to crystallize at the fan blades, causing the fan to vibrate violently and become unusable. In order to continue production, the fan has to be switched. Frequent switching of the fan affects production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a rapid heating structure for flue gas in a glass pool furnace, aiming to at least solve the technical problem that wet flue gas is easy to crystallize at the fan blades in the above-mentioned prior art. To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows:

[0005] A rapid heating structure for flue gas from a substrate glass pool furnace comprises an outer shell, to which an air inlet duct and an air outlet duct are connected, a No. 1 butterfly valve and a No. 2 butterfly valve are respectively arranged on the air inlet duct and the air outlet duct, the air inlet duct is used to be connected to the air outlet of an absorption tower, the air outlet duct is used to be connected to the inlet expansion joint of a smoke exhaust fan, and a heating component is arranged in the outer shell.

[0006] As a further solution of the utility model: the heating component includes:

[0007] A top box, the top box being mounted on the top of the outer shell;

[0008] A stainless steel sealing sheath, wherein a plurality of the stainless steel sealing sheaths are evenly inserted into the bottom of the top box, one end of the stainless steel sealing sheath is located in the top box, and the other end of the stainless steel sealing sheath is located in the outer shell, and each of the stainless steel sealing sheaths is installed with an electric heating wire;

[0009] Copper bar, two or more adjacent heating wires are connected to form a heating wire group through one copper bar, and the heating wire groups are connected in parallel with each other;

[0010] A box cover is arranged on the top of the top box.

[0011] As a further solution of the utility model: the heating component also includes a temperature sensor and a controller, the temperature sensor is arranged in the outer shell, the controller is located outside the outer shell, and the controller is electrically connected to the temperature sensor and the control switch of the heating wire.

[0012] As a further solution of the utility model: the number of the stainless steel sealing sleeves is 36, and the 36 stainless steel sealing sleeves are arranged in a square shape of 6 rows and 6 columns.

[0013] As a further solution of the utility model: it also includes a bypass pipeline, the bypass pipeline is connected between the air outlet pipeline and the air inlet pipeline, and a No. 3 butterfly valve is arranged on the bypass pipeline.

[0014] The utility model has the following beneficial effects:

[0015] The utility model provides a rapid heating structure between the air outlet of the absorption tower and the inlet expansion joint of the smoke exhaust fan; the rapid heating structure comprises an outer shell, the outer shell is connected with an air inlet pipe and an air outlet pipe, a heating component is provided in the outer shell, the wet smoke discharged from the air outlet of the absorption tower enters the outer shell from the air inlet pipe, the heating component rapidly heats and raises the temperature of the wet smoke entering the outer shell, the heated and heated wet smoke then enters the smoke exhaust fan from the air outlet pipe, the heated wet smoke enters the smoke exhaust fan, no crystallization occurs at the blades of the smoke exhaust fan, the smoke exhaust fan runs stably without vibration, the smoke exhaust fan can be used normally, there is no need to frequently switch the smoke exhaust fan, and production efficiency is improved;

[0016] The heating assembly of the utility model has a fast heating speed and high energy utilization rate. The heating wires are connected in parallel with each other, and the resistance of each heating wire will not affect each other. Even if one of the heating wires is damaged, the other heating wires can still work normally.

[0017] The utility model connects a bypass pipeline between the air outlet pipeline and the air inlet pipeline. When the heating structure fails and needs to be repaired, the wet flue gas temporarily goes through the bypass pipeline without the need to stop the entire production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of a substrate glass pool furnace flue gas rapid heating structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of a substrate glass pool furnace fume rapid heating structure (excluding the box cover) of the utility model;

[0021] Figure 3 yes Figure 2 A schematic diagram of the structure enlargement in the middle;

[0022] Figure 4 It is a schematic diagram of the combination of the top box and the stainless steel sealing sheath of the utility model.

[0023] In the figure: 1. outer shell; 11. air inlet pipe; 12. air outlet pipe; 2. butterfly valve No. 1; 3. butterfly valve No. 2; 4. absorption tower; 5. smoke exhaust fan; 51. inlet expansion joint; 6. heating assembly; 61. top box; 62. stainless steel sealing sleeve; 63. copper busbar; 64. box cover; 7. bypass pipe; 8. butterfly valve No. 3. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation. Therefore, it should not be understood as a limitation on the present invention.

[0026] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0027] Embodiment 1

[0028] See also Figure 1-4 As shown, in order to solve the problem of wet flue gas crystallization at the fan blades, it is necessary to increase the temperature of the wet flue gas entering the exhaust fan. This embodiment provides a substrate glass pool furnace flue gas rapid heating structure, including an outer shell 1, an air inlet pipe 11 and an air outlet pipe 12 are connected to the outer shell 1, and a No. 1 butterfly valve 2 and a No. 2 butterfly valve 3 are respectively arranged on the air inlet pipe 11 and the air outlet pipe 12. During installation, the air inlet pipe 11 is connected to the air outlet of the absorption tower 4, and the air outlet pipe 12 is connected to the inlet expansion joint 51 of the exhaust fan 5. A heating component 6 is arranged in the outer shell 1.

[0029] Working principle: the wet flue gas discharged from the air outlet of the absorption tower 4 enters the outer shell 1 from the air inlet pipe 11, and the heating component 6 quickly heats the wet flue gas entering the outer shell 1. The heated wet flue gas enters the smoke exhaust fan 5 from the air outlet pipe 12. The temperature of the wet flue gas before heating is 36-46°C. After being heated by the rapid heating structure, the temperature of the wet flue gas reaches 50-56°C, the flow rate is 1.5-2.8m / s, and the humidity is 4.3%-6.4%. The wet flue gas at this temperature enters the smoke exhaust fan 5. There is no crystallization at the blades of the smoke exhaust fan 5. The smoke exhaust fan 5 runs smoothly without vibration. The smoke exhaust fan 5 can be used normally without frequent switching of the smoke exhaust fan 5, thereby improving production efficiency.

[0030] See also Figure 3-4 As shown, in this embodiment, the heating assembly 6 at least includes a top box 61, a stainless steel sealing sheath 62, a copper bar 63, a heating wire and a box cover 64. The top box 61 can be integrally installed on the top of the outer shell 1, or can be sealed and clamped on the top of the outer shell 1; the top cover of the top box 61 is provided with a box cover 64. Several stainless steel sealing sheaths 62 are evenly inserted into the bottom of the top box 61, such as Figure 4 As shown, in this embodiment, there are 36 stainless steel sealing sleeves 62, and the 36 stainless steel sealing sleeves 62 are arranged in 6 rows and 6 columns in a square shape.

[0031] See also Figure 3 As shown, one end of the stainless steel sealed sheath 62 is located in the top box 61, and the other end of the stainless steel sealed sheath 62 is located in the outer shell 1. Each stainless steel sealed sheath 62 is installed with a heating wire. The heating wire is composed of metal wires. These metal wires have a high resistivity and will generate a large amount of heat energy when powered. In order to protect the metal wires and enhance their heating effect, the metal wires are usually wound into coils and fixed with insulating materials in the corresponding stainless steel sealed sheaths 62. Two or more adjacent heating wires are connected to form a heating wire group through a copper bar 63. The heating wire groups are connected in parallel. The advantage of the parallel connection method is that the resistance of each heating wire will not affect each other. Even if one of the heating wires is damaged, the other heating wires can still work normally. The power of the heating component 6 is 10-36KW. When the wet flue gas passes through, it is heated to quickly increase the temperature of the wet flue gas by 5-10℃.

[0032] Furthermore, the heating component 6 also includes a temperature sensor and a controller, both of which are existing products on the market. The temperature sensor and the controller are not shown in the figure. The temperature sensor is arranged in the outer shell 1, and the controller is located outside the outer shell 1. The controller is electrically connected to the temperature sensor and the control switch of the heating wire.

[0033] When the heating wire is connected to the temperature control system, the temperature sensor and controller are used to monitor and adjust the heating state of the heating wire, which can effectively prevent the heating wire from overheating or overloading, protecting the equipment and safety.

[0034] Embodiment 2

[0035] See also Figure 1-4 As shown, the present embodiment provides a rapid heating structure for flue gas of a substrate glass pool furnace, including an outer shell 1, to which an air inlet pipe 11 and an air outlet pipe 12 are connected, and a No. 1 butterfly valve 2 and a No. 2 butterfly valve 3 are respectively provided on the air inlet pipe 11 and the air outlet pipe 12. During installation, the air inlet pipe 11 is connected to the air outlet of an absorption tower 4, and the air outlet pipe 12 is connected to the inlet expansion joint 51 of a smoke exhaust fan 5, and a heating component 6 is provided in the outer shell 1.

[0036] The difference between this embodiment and the first embodiment is that:

[0037] See also Figure 1 As shown, a bypass pipe 7 is connected between the air outlet pipe 12 and the air inlet pipe 11 , and a No. 3 butterfly valve 8 is provided on the bypass pipe 7 .

[0038] When the utility model is in normal use, the No. 3 butterfly valve 8 is closed, the No. 1 butterfly valve 2 and the No. 2 butterfly valve 3 are opened, and the heating structure normally heats the wet flue gas rapidly and raises the temperature. When the heating structure fails and needs to be repaired, the No. 1 butterfly valve 2 and the No. 2 butterfly valve 3 are closed, and the No. 3 butterfly valve 8 is opened, and the wet flue gas temporarily goes through the bypass pipe 7 without the need to stop production as a whole.

[0039] In summary, the utility model provides a substrate glass pool furnace flue gas rapid heating structure, which has a simple structure and is easy to operate. It can quickly heat and raise the temperature of the wet flue gas entering the outer shell 1. There is no crystallization at the blades of the smoke exhaust fan 5. The smoke exhaust fan 5 runs smoothly without vibration. The smoke exhaust fan 5 can be used normally without frequently switching the smoke exhaust fan 5, thereby improving production efficiency. The heating method has the advantages of fast heating speed, high energy utilization, safety and reliability, environmental protection and pollution-free.

[0040] The above detailed description of the preferred embodiments of the utility model should not be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A rapid heating structure for flue gas of a substrate glass tank furnace, characterized in that: The invention comprises an outer shell (1), to which an air inlet pipe (11) and an air outlet pipe (12) are connected, and a first butterfly valve (2) and a second butterfly valve (3) are respectively arranged on the air inlet pipe (11) and the air outlet pipe (12), the air inlet pipe (11) is used to be connected to the air outlet of an absorption tower (4), and the air outlet pipe (12) is used to be connected to the inlet expansion joint (51) of a smoke exhaust fan (5), and a heating component (6) is arranged in the outer shell (1).

2. A substrate glass pool furnace flue gas rapid heating structure according to claim 1, characterized in that: The heating component (6) comprises: A top box (61), the top box (61) being mounted on the top of the outer shell (1); A stainless steel sealing sheath (62), wherein a plurality of the stainless steel sealing sheaths (62) are uniformly inserted into the bottom of the top box (61), one end of the stainless steel sealing sheath (62) is located in the top box (61), and the other end of the stainless steel sealing sheath (62) is located in the outer shell (1), and each of the stainless steel sealing sheaths (62) is installed with an electric heating wire; A copper bar (63), wherein two or more adjacent heating wires are connected to form a heating wire group via one copper bar (63), and the heating wire groups are connected in parallel with each other; A box cover (64), wherein the box cover (64) is arranged on the top of the top box (61).

3. A rapid heating structure for flue gas in a glass tank furnace according to claim 2, characterized in that: The heating component (6) further comprises a temperature sensor and a controller, wherein the temperature sensor is arranged inside the outer shell (1), and the controller is located outside the outer shell (1), and the controller is electrically connected to the temperature sensor and the control switch of the heating wire.

4. A substrate glass pool furnace flue gas rapid heating structure according to claim 3, characterized in that: There are 36 stainless steel sealing sleeves (62), and the 36 stainless steel sealing sleeves (62) are arranged in a square shape of 6 rows and 6 columns.

5. A substrate glass pool furnace flue gas rapid heating structure according to any one of claims 1 to 4, characterized in that: It also comprises a bypass pipe (7), wherein the bypass pipe (7) is connected between the air outlet pipe (12) and the air inlet pipe (11), and a No. 3 butterfly valve (8) is arranged on the bypass pipe (7).

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