Tail gas regulation control system for tin bath

Abstract

The utility model provides a tail gas regulation control system for a tin bath, which relates to the field of float glass tin baths and comprises a tin bath main body, the exhaust system comprises a plurality of exhaust branches, an exhaust main pipeline and an induced draft fan; one end of the exhaust branch is communicated with the inner cavity of the tin bath main body, the other end of the exhaust branch is communicated with the first end of the exhaust main pipeline, and the second end of the exhaust main pipeline is connected to the induced draft fan; the gate valves are arranged on the corresponding exhaust branches and used for controlling opening and closing of the exhaust branches; and the vortex shedding flowmeter is arranged on the exhaust main pipeline and is used for measuring tail gas. The tail gas emission speed is controllable, and the tail gas emission speed is promoted to be matched with the production process.

Description

Technical Field

[0001] The present application relates to the field of float glass tin bath, and in particular to an exhaust gas regulating and controlling system for a tin bath. Background Art

[0002] The tail gas emission system is a structure used to discharge the waste gas in the float glass tin bath, and is an important part of float glass production. Since the inside of the tin bath needs to maintain a slightly positive pressure and a weak reducing atmosphere during the production process, protective gas will be continuously introduced into the tin bath during the production process. The tail gas emission system can timely discharge the waste gas and excess protective gas generated during the production process, ensure that the tin bath maintains a qualified atmosphere and pressure, improve the glass quality, and extend the service life of the tin bath.

[0003] However, in the prior art, the exhaust gas emission system usually adopts passive emission, that is, relying on the slight positive pressure in the tin bath as the driving force to achieve exhaust gas emission. Since the pressure in the tin bath is not much higher than the atmospheric pressure, the gas flow rate in the exhaust gas emission pipe is small and the emission capacity is also low. Utility Model Content

[0004] In order to make the exhaust gas emission speed controllable and to make the exhaust gas emission speed match the production process, the present application provides an exhaust gas regulation control system for a tin bath.

[0005] To solve the above problems, the technical solution of the utility model is:

[0006] An exhaust gas regulating control system for a tin bath, comprising:

[0007] Tin bath body;

[0008] An exhaust system, the exhaust system comprising a plurality of exhaust branches, an exhaust main pipeline and an induced draft fan; one end of the exhaust branch is connected to the inner cavity of the tin bath body, the other end of the exhaust branch is connected to the first end of the exhaust main pipeline, and the second end of the exhaust main pipeline is connected to the induced draft fan;

[0009] A plurality of gate valves, which are arranged on the corresponding exhaust branches and are used to control the opening and closing of the exhaust branches;

[0010] The vortex flowmeter is arranged on the exhaust main pipeline and is used to measure the exhaust gas.

[0011] The utility model is used for the exhaust gas regulation and control system of the tin bath, the exhaust branch comprises a connecting section, a matching section, a mixing section and a detection section which are connected in sequence; one end of the connecting section is arranged on the tin bath body, and one end of the detection section is arranged on the first end of the exhaust main pipe;

[0012] Wherein, the matching section is a retractable bellows.

[0013] In the tail gas regulating and controlling system for a tin bath of the utility model, one end of the matching section is connected to the connecting section via a first flange, and the other end of the matching section is connected to the mixing section via a second flange.

[0014] The utility model is used for the exhaust gas regulation control system of the tin bath, the mixing section has a first input end and a second input end, the first input end is connected to the output end of the matching section, the second input end is connected to the outside, and the output end of the mixing section is connected to the input end of the detection end.

[0015] In the utility model, the tail gas regulating and controlling system for a tin bath is provided with a pressure sensor on the detection section.

[0016] In the exhaust gas regulating and controlling system for a tin bath of the utility model, a first thermocouple is arranged on the exhaust main pipeline, and the first thermocouple is located upstream of the vortex flowmeter.

[0017] In the exhaust gas regulating and controlling system for a tin bath of the utility model, a second thermocouple is arranged on the exhaust main pipeline, and the second thermocouple is located downstream of the vortex flowmeter.

[0018] In the exhaust gas regulating and controlling system for a tin bath of the utility model, a connecting edge sealing block is arranged between the connecting section and the tin bath body, and the connecting edge sealing block is arranged on the tin bath body and protrudes toward the outer side wall of the tin bath body.

[0019] In the tail gas regulating and controlling system for a tin bath of the utility model, the connecting section and the connecting edge sealing block are connected via a third flange.

[0020] The utility model is used for the tail gas regulation control system of the tin bath, the air volume of the induced draft fan is A, and the value range of A is [200,500]Nm 3 / h.

[0021] Due to the adoption of the above technical solution, the utility model has the following advantages and positive effects compared with the prior art:

[0022] During operation, open the gate valve, control the motor speed through the motor frequency of the induced draft fan to control the induced draft fan air volume, and control the amount of extracted gas through the exhaust main duct and the exhaust branch to achieve control of the exhaust gas emission flow inside the tin bath body.

[0023] Among them, the pressure sensor monitors the pressure on the detection section, the mixing section mixes the air with the tin bath exhaust gas to reduce the exhaust gas temperature to reach the range that the vortex flowmeter can accurately measure, and the vortex flowmeter monitors the mixed gas flow, and comprehensively measures the data, combined with the flow of the exhaust main pipeline and the exhaust branch, to calculate the amount of tin bath exhaust gas emissions, thereby controlling the high-temperature induced draft fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Structural schematic diagram of the tail gas regulation control system for the tin bath in the embodiment of the present application

[0025] Figure 2 System diagram of the tail gas regulation control system for the tin bath according to the embodiment of the present application

[0026] Explanation of the reference numerals: 1. Tin bath body; 2. Connection section; 3. Matching section; 4. Mixing section; 5. Detection section; 6. Gate valve; 7. Vortex flowmeter; 8. First thermocouple; 9. Second thermocouple; 10. Connecting edge seal block; 11. First flange; 12. Second flange; 13. Third flange; 14. Draft fan; 15. Control box; 16. Pressure sensor; 19. Exhaust main duct. DETAILED DESCRIPTION

[0027] The following is a further detailed description of an exhaust gas regulation control system for a tin bath proposed by the utility model in combination with the accompanying drawings and specific embodiments. The advantages and features of the utility model will become more apparent according to the following description and claims.

[0028] See also Figure 1 to Figure 2 The present application provides an exhaust gas regulation and control system for a tin bath, comprising a tin bath body 1, an exhaust system, a plurality of gate valves 6 and a vortex flowmeter 7. The exhaust system comprises a plurality of exhaust branches, an exhaust main pipeline 19 and an induced draft fan 14; one end of the exhaust branch is connected to the inner cavity of the tin bath body 1, the other end of the exhaust branch is connected to the first end of the exhaust main pipeline 19, and the second end of the exhaust main pipeline 19 is connected to the induced draft fan 14. A plurality of gate valves 6 are arranged on the corresponding exhaust branches and are used to control the switch of the exhaust branches. The vortex flowmeter 7 is arranged on the exhaust main pipeline 19 and is used to measure the exhaust gas.

[0029] It is further explained that the gate valve 6 can be closed when not in use, so that the exhaust gas cannot pass through the gate valve 6, making the exhaust branch controllable.

[0030] During operation, the gate valve 6 is opened, and the motor speed of the induced draft fan 14 is controlled by the motor frequency to control the induced air volume of the induced draft fan 14, and the amount of extracted gas is controlled through the exhaust main duct 19 and the exhaust branch, so as to control the exhaust gas emission flow inside the tin bath body 1.

[0031] The specific structure of the exhaust gas regulation control system for the tin bath of this embodiment is further described below:

[0032] In this embodiment, the exhaust branch includes a connecting section 2, a matching section 3, a mixing section 4 and a detection section 5 which are connected in sequence; one end of the connecting section 2 is arranged on the tin bath body 1, and one end of the detection section 5 is arranged on the first end of the exhaust main pipe 19; wherein the matching section 3 is a retractable bellows.

[0033] To further explain, the connection method is: the connecting section 2 is connected to the tin bath body 1, the matching section 3 is connected to the connecting section 3, the mixing section 4 is connected to the matching section, the detection section 5 is connected to the mixing section, and the exhaust main pipe 19 is connected to the detection section 5.

[0034] In this embodiment, one end of the matching section 3 is connected to the connecting section 2 via a first flange 11 , and the other end of the matching section 3 is connected to the mixing section 4 via a second flange 12 .

[0035] Further explanation, for the convenience of installation, the connecting section 2 is first fixed to the tin bath body 1, and after the detection section 5 and the mixing section 4 are combined, they can be fixed to an external bracket, or directly installed to the exhaust main duct 19; when connecting between the mixing section 4 and the connecting section 2, the length adjustment is achieved through the bellows; the bellows can be connected to the connecting section 2 through a first flange, and the bellows can be connected to the mixing section 4 through a second flange 12.

[0036] Furthermore, the first flange 11 and the second flange 12 are connected so that they can be disassembled after being connected.

[0037] In this embodiment, the mixing section 4 has a first input end and a second input end. The first input end is connected to the output end of the matching section 3 , and the second input end is connected to the outside. The output end of the mixing section 4 is connected to the input end of the detection end section 5 .

[0038] In this embodiment, a pressure sensor 16 is provided on the detection section 5 .

[0039] To further explain, in the mixing section 4, air is mixed with the tin bath exhaust gas, so that the exhaust gas temperature is reduced to a range that can be accurately measured by the vortex flowmeter 7.

[0040] In this embodiment, a first thermocouple 8 is provided on the exhaust main pipe 19 , and the first thermocouple 8 is located upstream of the vortex flowmeter 7 .

[0041] In this embodiment, a second thermocouple 9 is provided on the exhaust main pipe 19 , and the second thermocouple 9 is located downstream of the vortex flowmeter 7 .

[0042] Further explanation: the first thermocouple 8 is located between the vortex flowmeter 7 and the first end of the exhaust main pipe 19, and the first thermocouple 8 is used to detect the temperature of the mixed gas; the second thermocouple 9 is located between the vortex flowmeter 7 and the second end of the exhaust main pipe 19, and the second thermocouple 9 is used to detect the temperature of the exhaust gas.

[0043] In this embodiment, a connecting edge sealing block 10 is provided between the connecting section 2 and the tin bath body 1 . The connecting edge sealing block 10 is provided on the tin bath body 1 and protrudes toward the outer side wall of the tin bath body 1 .

[0044] It is further explained that the connecting edge sealing block 10 has an inner cavity, and the inner cavity of the connecting edge sealing block 10 is connected to the inner cavity of the tin bath body 1; and the connecting edge sealing block 10 is protrudingly arranged to facilitate the installation of the connecting section 2.

[0045] To further explain, the first thermocouple 8 , the second thermocouple 9 , the pressure sensor 16 , and the vortex flowmeter 7 are all fed back to the control box 15 , and are controlled and fed back to the induced draft fan 14 through the control box 15 , thereby regulating the output rate of the induced draft fan 14 .

[0046] In this embodiment, the connecting section 2 and the connecting edge sealing block 10 are connected via a third flange 13 .

[0047] To further explain, the connecting section 2 and the connecting edge sealing block 10 are connected via the third flange 13 to achieve a detachable connection.

[0048] To further explain, the first flange 11, the second flange 12 and the third flange 13 each include two flanges, a plurality of bolts and a plurality of nuts, wherein the bolts pass through the two flanges and are fixed by the nuts, so that the two flanges are pressed against each other.

[0049] In this embodiment, the air volume of the induced draft fan is A, and the value range of A is [200,500] Nm 3 / h.

[0050] In summary, this solution solves the problem of weak exhaust capacity and easy blockage of the existing tail gas emission system. By adjusting the exhaust gas emission flow rate, the concentration and pressure of harmful volatiles in the protective gas inside the tin bath body 1 are controlled to be stable, the atmosphere in the tin bath is purified, the related defects are reduced, and the glass quality is improved.

[0051] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. An exhaust gas regulation and control system for a tin bath, characterized in that: include, Tin bath body; An exhaust system, the exhaust system comprising a plurality of exhaust branches, an exhaust main pipeline and an induced draft fan; one end of the exhaust branch is connected to the inner cavity of the tin bath body, the other end of the exhaust branch is connected to the first end of the exhaust main pipeline, and the second end of the exhaust main pipeline is connected to the induced draft fan; A plurality of gate valves, which are arranged on the corresponding exhaust branches and are used to control the opening and closing of the exhaust branches; The vortex flowmeter is arranged on the exhaust main pipeline and is used to measure the exhaust gas.

2. The exhaust gas regulation and control system for a tin bath according to claim 1, characterized in that: The exhaust branch includes a connecting section, a matching section, a mixing section and a detection section which are connected in sequence; one end of the connecting section is arranged on the tin bath body, and one end of the detection section is arranged on the first end of the exhaust main pipe; Wherein, the matching section is a retractable bellows.

3. The exhaust gas regulation and control system for a tin bath according to claim 2, characterized in that: One end of the matching section is connected to the connecting section via a first flange, and the other end of the matching section is connected to the mixing section via a second flange.

4. The exhaust gas regulation and control system for a tin bath according to claim 2, characterized in that: The mixing section has a first input end and a second input end, the first input end is connected to the output end of the matching section, the second input end is connected to the outside, and the output end of the mixing section is connected to the input end of the detection section.

5. The exhaust gas regulation and control system for a tin bath according to claim 2, characterized in that: The detection section is provided with a pressure sensor.

6. The exhaust gas regulation and control system for a tin bath according to claim 1, characterized in that: The exhaust main pipe is provided with a first thermocouple, and the first thermocouple is located upstream of the vortex flowmeter.

7. The exhaust gas regulation and control system for a tin bath according to claim 1, characterized in that: A second thermocouple is arranged on the exhaust main pipe, and the second thermocouple is located downstream of the vortex flowmeter.

8. The exhaust gas regulation and control system for a tin bath according to claim 2, characterized in that: A connecting edge sealing block is arranged between the connecting section and the tin bath body. The connecting edge sealing block is arranged on the tin bath body and protrudes toward the outer side wall of the tin bath body.

9. The tail gas regulation and control system for a tin bath according to claim 8, characterized in that: The connecting section and the connecting edge sealing block are connected via a third flange.

10. The exhaust gas regulation and control system for a tin bath according to claim 1, characterized in that: The air volume of the induced draft fan is A, and the value range of A is [200,500] Nm 3 / h.

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