Liquid crystal glass kiln combustion device

Abstract

The utility model provides a liquid crystal glass kiln combustion device which comprises a main pipeline and a natural gas branch pipeline, the main pipeline and an electrical interlocking control box are both fixedly connected to the surface of a support, and the inlet end of the main pipeline is fixedly connected with a pressure gauge. A pressure sensor and a temperature sensor are fixedly connected to the position, below the pressure gauge, of the surface of the main pipeline, the pressure gauge and a gas flow control executing mechanism are sequentially and fixedly connected to the inlet end of the natural gas branch pipeline and the inlet end of the oxygen branch pipeline respectively, and the gas flow control executing mechanism is composed of a main branch pipe and an auxiliary branch pipe. And the main branch pipe is fixedly connected with a shut-off valve, a flow meter, an electric flow regulating valve, a shut-off valve and a pressure sensor in sequence from bottom to top. According to the utility model, various detection devices are matched with various valves, so that the device can provide stable natural gas and oxygen with a proper ratio for the combustion gun, thereby ensuring the stability and safety of flame combustion in the kiln.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal glass substrate processing and manufacturing technology, specifically to a liquid crystal glass furnace combustion device. Background Technology

[0002] In the manufacturing process of LCD glass, according to process control requirements, the furnace is used to heat the glass raw materials (individual pieces) at high temperatures and turn them into molten glass through thermal decomposition and chemical reactions. The molten glass is then processed through channels, muffle furnaces, forming furnaces, and other processes to form the required glass sheets. The furnace is built with refractory materials. Before the glass raw materials are added, the furnace needs to be preheated to 1500℃. During the preheating process, natural gas and oxygen are used to heat the furnace. The ratio of natural gas and oxygen is required, with natural gas needing to burn completely and oxygen in a slight excess, known as oxy-fuel combustion. The natural gas is supplied to the company's natural gas station via municipal pipelines, where it is depressurized and supplied to the production department. However, because the factory buildings where the production department is located are relatively enclosed, if natural gas leaks or if the valves cannot be shut off immediately in case of a leak, it will not only affect the safe operation of the furnace but may also lead to safety accidents and incalculable economic losses. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, a liquid crystal glass furnace combustion device is provided to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, a liquid crystal glass furnace combustion device is provided, comprising: a main pipeline and natural gas branch pipelines. Two sets of main pipelines are connected to the natural gas branch pipeline and the oxygen branch pipeline respectively via transition pipes. The main pipeline and the electrical interlock control box are both fixedly connected to the surface of a support. A pressure gauge is fixedly connected to the inlet end of the main pipeline. A pressure sensor and a temperature sensor are fixedly connected to the surface of the main pipeline below the pressure gauge. A branch pipeline is fixedly connected to the main pipeline at the rear end of the temperature sensor. A ball valve, a filter, a pressure regulating valve, a pressure reducing valve, and another ball valve are sequentially fixedly connected along the length of the main pipeline and the branch pipeline. Meanwhile, the main pipeline... A temperature sensor is fixedly connected at the rear end of the branch line, while a flow meter, pressure gauge, low-pressure alarm switch, manual shut-off valve, automatic shut-off valve, manual shut-off valve, high-pressure alarm switch, and manual shut-off valve are fixedly connected sequentially in the middle and rear section of the main line. The inlet ends of the natural gas branch line and the oxygen branch line are respectively fixedly connected to a pressure gauge and a gas flow control actuator. The gas flow control actuator consists of a main branch line and a secondary branch line. The main branch line is fixedly connected from bottom to top to a shut-off valve, a flow meter, an electric flow regulating valve, a shut-off valve, and a pressure sensor. At the same time, shut-off valves are symmetrically connected to both ends of the secondary branch line.

[0005] Preferably, the branch road fixedly connected to the main road has an "I" shape, and the main road and the branch road are each fixedly connected to a set of filters, and both sets of filters are Y-shaped with bypass.

[0006] Preferably, a set of pressure gauges is fixedly connected to both ends of the filter, and the branch is located between the two sets of pressure gauges. At the same time, two sets of ball valves are fixedly connected to the corresponding positions at both ends of the branch and the main pipeline.

[0007] Preferably, a set of manual shut-off valves is fixedly connected to each end of the main pipeline relative to the high-pressure alarm switch, and a set of manual shut-off valves is fixedly connected to the main pipeline between the low-pressure alarm switch and the automatic shut-off valve.

[0008] Preferably, the natural gas branch pipeline and the oxygen branch pipeline are fixedly connected at equal intervals along their length to multiple sets of gas flow control actuators, and the gas flow control actuators are D-shaped in general. At the same time, the ends of the gas flow control actuators are connected to the combustion gun through stainless steel hoses.

[0009] Preferably, the two ends of the main branch pipe are symmetrically connected to the two ends of the sub-branch pipe, and the sub-branch pipe has an 1-shaped structure. At the same time, two sets of shut-off valves are fixedly connected to the corresponding positions of the two ends of the sub-branch pipe and the two ends of the main branch pipe.

[0010] Preferably, a set of combustible gas alarm devices are fixedly connected to the main pipeline and the gas flow control actuator, and the bracket as a whole has an L-shaped frame structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: Through the cooperation of ball valves, main pipelines, pressure sensors, temperature sensors, pressure reducing valves, pressure regulating valves, pressure gauges, automatic shut-off valves, manual shut-off valves, low-pressure alarm switches, high-pressure alarm switches, and electrical interlock control boxes, the main combustion disc of this device can perform corresponding data detection on the input natural gas and oxygen, thereby ensuring the safety of natural gas and oxygen transportation. It can also promptly shut off multiple valves in case of accidents, ensuring the safe operation of the kiln and reducing the probability of safety accidents. Furthermore, through the cooperation of natural gas branch pipelines, oxygen branch pipelines, and gas flow control actuators, the ratio between natural gas and oxygen can be optimized, thereby enhancing the safety and stability of flame combustion in the kiln. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main combustion disc structure according to an embodiment of the present invention.

[0013] Figure 2 This is a schematic diagram of the main combustion section in an embodiment of the present invention.

[0014] Figure 3This is a schematic diagram of the disk structure according to an embodiment of the present utility model.

[0015] Figure 4 This is a schematic diagram of the disc divider component according to an embodiment of the present utility model.

[0016] Figure 5 This is a schematic diagram of the overall layout of an embodiment of the present utility model.

[0017] In the diagram: 1. Ball valve; 2. Pressure gauge; 3. Pressure sensor; 4. Temperature sensor; 5. Filter; 6. Pressure reducing valve; 7. Flow meter; 8. Electrical interlock control box; 9. Low-pressure alarm switch; 10. Automatic shut-off valve; 11. Manual shut-off valve; 12. Manual shut-off valve; 13. High-pressure alarm switch; 14. Main pipeline; 15. Pressure regulating valve; 16. Support; 17. Shut-off valve; 18. Natural gas branch pipeline; 19. Oxygen branch pipeline; 20. Secondary branch pipeline; 21. Main branch pipeline; 22. Electric flow regulating valve. Detailed Implementation

[0018] Reference Figures 1 to 5 As shown, this utility model provides a liquid crystal glass furnace combustion device, including: a main pipeline 14 and a natural gas branch pipeline 18. Two sets of main pipelines 14 are respectively connected to the natural gas branch pipeline 18 and the oxygen branch pipeline 19 through transition pipes. The main pipeline 14 and the electrical interlock control box 8 are both fixedly connected to the surface of the bracket 16. The inlet end of the main pipeline 14 is fixedly connected to a pressure gauge 2. The surface of the main pipeline 14 below the pressure gauge 2 is fixedly connected to a pressure sensor 3 and a temperature sensor 4. The main pipeline 14 is fixedly connected to a branch pipeline at the rear end of the temperature sensor 4. The main pipeline 14 and the branch pipeline are respectively fixedly connected along the length direction to a ball valve 1, a filter 5, a pressure regulating valve 15, a pressure reducing valve 6, and a ball valve 1. At the same time, the main pipeline 14 is located at the branch pipeline 16. Temperature sensor 4 is fixedly connected at the rear end of the pipeline. Meanwhile, flow meter 7, pressure gauge 2, low-pressure alarm switch 9, manual shut-off valve 12, automatic shut-off valve 10, manual shut-off valve 11, manual shut-off valve 12, high-pressure alarm switch 13, and manual shut-off valve 12 are sequentially fixedly connected at the rear section of the main pipeline 14. Pressure gauge 2 and gas flow control actuator are sequentially fixedly connected at the inlet ends of the natural gas branch pipeline 18 and oxygen branch pipeline 19, respectively. The gas flow control actuator consists of a main branch pipe 21 and a secondary branch pipe 20. From bottom to top, shut-off valve 17, flow meter 7, electric flow regulating valve 22, shut-off valve 17, and pressure sensor 3 are sequentially fixedly connected to the main branch pipe 21. Simultaneously, shut-off valve 17 is symmetrically connected to both ends of the secondary branch pipe 20.

[0019] In this embodiment, the main combustion plate and branch plates are purged before gas supply. Then, power is supplied, and preset values ​​are set for the high-pressure alarm switch 13, the low-pressure alarm switch 9, and the combustible gas alarm device. The preset values ​​are determined according to actual safety requirements. After adjustment, the ball valves 1 at the inlet ends of the two sets of main pipelines 14 are opened, allowing natural gas to flow into one set of main pipelines 14 and oxygen to flow into the other set of main pipelines 14. The system start button in the electrical interlock control box 8 is activated, and the corresponding system starts. The automatic shut-off valve 10 of the oxygen main pipeline 14 opens, requiring manual reset to open the manual shut-off valve 11. After the manual shut-off valve 11 is reset, the automatic shut-off valve 10 of the natural gas main pipeline 14 opens, and the corresponding manual shut-off valve 11 is opened again. After operating in this sequence, natural gas and oxygen can enter the natural gas branch pipeline 18 and oxygen branch pipeline 19 in the branch plates through the transition pipes, respectively. The electrical interlock control box 8 in the main combustion plate is equipped with a system start button, a system stop button, a reset button, and a natural gas... The gas pressure high / low alarm indicator and the oxygen pressure high / low alarm indicator are activated. When the gas pressure high / low alarm indicator or the oxygen pressure high / low alarm indicator is lit, or in the event of a power outage, the electrical interlock control box 8 can control the corresponding automatic shut-off valve 10 to close. When the gas supply is unstable or there is a burst or backfire in the pipeline, and the gas pressure exceeds the preset value of the corresponding detection equipment, the electrical interlock control box 8 will also automatically close the automatic shut-off valve 10. The natural gas branch pipeline 18 and the oxygen branch pipeline 19 in the distribution panel will adjust the amount of natural gas and oxygen through the corresponding gas flow control actuator to ensure the stability and safety of the flame combustion in the kiln. At the same time, the system stop button in the electrical interlock control box 8 and the combustible gas alarm device in the main combustion panel and the gas flow control actuator are all electrically connected to the central control room (not shown in the figure) to ensure the safety of the overall operation of the device and the timeliness of responding to emergencies, reducing unnecessary losses. When the temperature in the kiln reaches the specified range, the liquid crystal glass raw material can be sent into the kiln for firing.

[0020] In a preferred embodiment, the branch connected to the main pipeline 14 is in the shape of a "[", and the main pipeline 14 and the branch are respectively connected to a set of filters 5, and both sets of filters 5 are in the shape of a Y with bypass.

[0021] In this embodiment, as Figure 1 and Figure 2 The structure of the main pipeline 14 and the branch pipelines allows each of the two sets of filters 5, two sets of pressure reducing valves 6 and two sets of pressure regulating valves 15 to have one set in use and the other set as a spare, which facilitates subsequent cleaning and prevents the natural gas or oxygen from being cut off. At the same time, the filter 5 can improve the purity of natural gas and oxygen.

[0022] In a preferred embodiment, a set of pressure gauges 2 are fixedly connected to both ends of the filter 5, and the branch is located between the two sets of pressure gauges 2. At the same time, two sets of ball valves 1 are fixedly connected to the corresponding positions of the two ends of the branch and the two ends of the main pipeline 14.

[0023] In this embodiment, as Figure 1 and Figure 2 The four sets of ball valves 1 corresponding to the branch and main lines 14 are open by default. The positions of the four sets of ball valves 1 are designed to facilitate seamless switching between the two sets of filters 5, ensuring the stability of combustion in the kiln. The two sets of pressure gauges 2, one set of pressure sensors 3 and one set of temperature sensors 4 set before and after the filters 5 are electrically connected to the electrical interlock control box 8.

[0024] In a preferred embodiment, a set of manual shut-off valves 12 are fixedly connected to the two ends of the main pipeline 14 relative to the high-pressure alarm switch 13, and a set of manual shut-off valves 12 are fixedly connected to the main pipeline 14 between the low-pressure alarm switch and the automatic shut-off valve 10.

[0025] In this embodiment, as Figure 1 and Figure 2 The manual shut-off valve 12 can perform multiple closures on the output end of the main pipeline 14, thereby enhancing the cut-off effect between the main combustion disc and the branch disc of the device. At the same time, the high-pressure alarm switch 13 and the low-pressure alarm switch 9 are electrically connected to the electrical interlock control box 8.

[0026] In a preferred embodiment, the natural gas branch pipeline 18 and the oxygen branch pipeline 19 are respectively fixedly connected to multiple sets of gas flow control actuators at equal intervals along the length direction, and the gas flow control actuators are D-shaped in general. At the same time, the end of the gas flow control actuator is connected to the combustion gun through a stainless steel hose.

[0027] In this embodiment, as Figure 3 , Figure 4 and Figure 5 Each branch of the natural gas branch line 18 and the oxygen branch line 19 is equipped with an independent gas flow control actuator, meaning that the natural gas and oxygen flow of each combustion gun can be controlled independently. All gas flow control actuators use electric flow regulating valves 22, which are PID regulated in the central control room. After the flow value is set, the opening of the electric flow regulating valve 22 will change according to the set flow value. The flow value will change accordingly according to the temperature in the kiln. Then, after the kiln temperature reaches the appropriate range, the liquid crystal glass raw material can be sent into the kiln for firing. The electric flow regulating valve 22 is electrically connected to the electrical interlock control box 8 and the central control room respectively.

[0028] In a preferred embodiment, the two ends of the main branch pipe 21 are symmetrically connected to the two ends of the sub-branch pipe 20, and the sub-branch pipe 20 has an 1-shaped structure. At the same time, two sets of shut-off valves 17 are fixedly connected to the corresponding positions of the two ends of the sub-branch pipe 20 and the two ends of the main branch pipe 21.

[0029] In this embodiment, as Figure 3 and Figure 4 The four sets of shut-off valves 17 enable convenient and seamless switching between the on / off states of the main branch pipe 21 and the secondary branch pipe 20, ensuring the smooth flow of natural gas and oxygen and the stability of the flame ejected from the combustion gun.

[0030] As a preferred embodiment, a set of combustible gas alarm devices are fixedly connected to the main pipeline 14 and the gas flow control actuator, and the bracket 16 is an L-shaped frame structure.

[0031] In this embodiment, as Figure 1 and Figure 3 The structure of bracket 16 can help enhance the stability of the main combustion plate after installation, while the setting of combustible gas alarm device can improve the detection sensitivity of the device to accidental gas leakage, reduce the probability of safety accidents, and ensure the overall safety of the device operation.

[0032] This utility model's liquid crystal glass kiln combustion device, through the cooperation of various detection devices and valves, enables the device to provide a stable and appropriately proportioned natural gas and oxygen to the combustion lance, thereby ensuring the stability and safety of flame combustion within the kiln. Furthermore, the device not only provides an effective and stable gas supply but also ensures the safe operation of the kiln, preventing safety accidents. It can also simultaneously cut off the supply of natural gas and oxygen at multiple points, reducing the harm and unnecessary losses after a safety accident.

[0033] The parts of the circuits, electronic components and modules involved in this application are all prior art, which can be fully implemented by those skilled in the art, and the content protected by this utility model does not involve any improvement to the software and methods.

Claims

1. A liquid crystal glass furnace combustion device, comprising: The main pipeline (14) and the natural gas branch pipeline (18) are connected to the natural gas branch pipeline (18) and the oxygen branch pipeline (19) respectively through transition pipes. The main pipeline (14) and the electrical interlock control box (8) are fixedly connected to the surface of the bracket (16). The inlet end of the main pipeline (14) is fixedly connected to the pressure gauge (2). The surface of the main pipeline (14) below the pressure gauge (2) is fixedly connected to the pressure sensor (3) and the temperature sensor (4). The branch is fixedly connected to the main pipeline (14) at the rear end of the temperature sensor (4). The ball valve (1), filter (5), pressure regulating valve (15), pressure reducing valve (6) and ball valve (1) are fixedly connected to the main pipeline (14) and the branch pipe respectively along the length direction. At the same time, the temperature sensor (4) is fixedly connected to the branch pipe at the rear end of the main pipeline (14). Sensor (4), and in the middle and rear section of the main pipeline (14), flow meter (7), pressure gauge (2), low pressure alarm switch (9), manual shut-off valve (12), automatic shut-off valve (10), manual shut-off valve (11), manual shut-off valve (12), high pressure alarm switch (13) and manual shut-off valve (12) are fixedly connected in sequence. The inlet ends of the natural gas branch pipeline (18) and oxygen branch pipeline (19) are respectively fixedly connected to pressure gauge (2) and gas flow control actuator. The gas flow control actuator is composed of main branch pipe (21) and secondary branch pipe (20). The main branch pipe (21) is fixedly connected from bottom to top to shut-off valve (17), flow meter (7), electric flow regulating valve (22), shut-off valve (17) and pressure sensor (3). At the same time, the two ends of the secondary branch pipe (20) are symmetrically connected to shut-off valve (17).

2. The liquid crystal glass furnace combustion device according to claim 1, characterized in that, The main pipeline (14) is fixedly connected to a branch pipeline in a Y-shape, and the main pipeline (14) and the branch pipeline are respectively fixedly connected to a set of filters (5), and both sets of filters (5) are Y-shaped with bypass.

3. The liquid crystal glass furnace combustion device according to claim 1, characterized in that, The filter (5) is fixedly connected to a set of pressure gauges (2) at both ends, and the branch is located between the two sets of pressure gauges (2). At the same time, the two ends of the branch and the two ends of the main pipeline (14) are fixedly connected to two sets of ball valves (1).

4. The liquid crystal glass furnace combustion device according to claim 1, characterized in that, A set of manual shut-off valves (12) are fixedly connected to the two ends of the main pipeline (14) relative to the high-pressure alarm switch (13), and a set of manual shut-off valves (12) are fixedly connected to the main pipeline (14) between the low-pressure alarm switch and the automatic shut-off valve (10).

5. The liquid crystal glass furnace combustion device according to claim 1, characterized in that, The natural gas branch pipeline (18) and the oxygen branch pipeline (19) are fixedly connected to multiple gas flow control actuators at equal intervals along their length. The gas flow control actuators are D-shaped in general, and the ends of the gas flow control actuators are connected to the combustion gun through stainless steel hoses.

6. The liquid crystal glass furnace combustion device according to claim 1, characterized in that, The two ends of the main branch pipe (21) are symmetrically connected to the two ends of the secondary branch pipe (20), and the secondary branch pipe (20) has a [] shape. At the same time, two sets of shut-off valves (17) are fixedly connected to the corresponding positions of the two ends of the secondary branch pipe (20) and the two ends of the main branch pipe (21).

7. The liquid crystal glass furnace combustion device according to claim 1, characterized in that, The main pipeline (14) and the gas flow control actuator are respectively fixedly connected to a set of combustible gas alarm devices, and the bracket (16) is an L-shaped frame structure.

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