Flameout detection and alarm system for pot-type furnace

Abstract

The invention relates to the technical field of petroleum coke calcination, in particular to a pot-type furnace flameout detection alarm system which comprises a flame detector, a control box, an electromagnetic valve and an alarm terminal, the flame detector is arranged at a flame path inlet and electrically connected with the control box, and the electromagnetic valve is arranged at the gas inlet end of a gas spray pipe. The electromagnetic valve is electrically connected with the control box; the flame detector transmits an electric signal indicating whether flames are detected or not to the control box, the control box controls the electromagnetic valve to be opened when the flames are detected, fuel gas enters the flame path, and the control box controls the electromagnetic valve to be closed when the flames are not detected, the alarm terminal gives an alarm, and the fuel gas stops entering the flame path. By arranging the alarm system with the flame detector and the electromagnetic valve, gas can be closed in time after flameout, and potential safety hazards caused by continuous spraying combustion after flameout are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum coke calcining, in particular to a flameout detection and alarm system for a tank furnace. Background Art

[0002] In recent years, electrolytic aluminum prices have continued to decline, leading to rising production costs for companies. At the same time, relatively high raw material prices have made pot calciners, or canister furnaces, increasingly advantageous in the petroleum coke calcining market, gradually gaining market share. The drying step is particularly crucial in the production of canister furnaces for calcining petroleum coke, directly determining the furnace's subsequent performance and lifespan.

[0003] During the baking process of the tank furnace, especially in the first half month, the temperature inside the furnace is low, the heating rate is slow, and the flame is small. It is easy to extinguish the fire under the influence of negative pressure or the external environment. If it is not discovered in time, the temperature will drop significantly, and it will need to be reheated, which will increase energy consumption. Moreover, after the fire is extinguished, the fire channel is still burning. At this time, the fire channel is full of gas. If the staff does not wait long enough during the handling process, it will ignite again and cause an explosion accident, endangering the personal safety of the staff. Ensuring safety is the top priority of enterprise production. At present, the tank furnace adopts manual inspection to understand the baking situation of the furnace, or manually determines whether to extinguish the fire by monitoring the temperature. Both of them cannot detect and extinguish the fire in a timely and accurate manner, posing a serious production safety hazard. Summary of the Invention

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a tank furnace flameout detection alarm system. By setting up an alarm system with a flame detector and a solenoid valve, the gas can be shut off in time after the flame is extinguished, avoiding the safety hazards caused by continued combustion after the flame is extinguished.

[0005] In order to achieve the above objectives, the main technical solutions adopted by the present invention include: A flameout detection and alarm system for a tank furnace comprises a flame detector, a control box, a solenoid valve and an alarm terminal. A flame detector is provided at the entrance of the fire channel and is electrically connected to the control box. A solenoid valve is provided at the air inlet end of the gas nozzle and is electrically connected to the control box. The flame detector transmits an electrical signal indicating whether a flame is detected to the control box. When a flame is detected, the control box controls the solenoid valve to open and the gas enters the fire channel. When no flame is detected, the control box controls the solenoid valve to close, the alarm terminal sounds an alarm, and the gas stops entering the fire channel.

[0006] By setting up an alarm system with a flame detector and a solenoid valve, the gas can be shut off in time after the flame is extinguished to ensure that it does not continue to spray, thus avoiding the safety hazards caused by continued spraying after the flame is extinguished.

[0007] Furthermore, it also includes an alarm terminal, which is electrically connected to the control box. When no flame is detected, the control box controls the alarm terminal to alarm.

[0008] By setting up an alarm terminal, on-site staff can be notified in time to go to the fire channel to extinguish the fire and take action. This is more efficient than conventional manual inspections one by one.

[0009] Furthermore, a controller for controlling the switch of the solenoid valve is provided inside the control box, and the controller has a delay function, which is used to keep the solenoid valve normally open during ignition.

[0010] By setting a controller with a delay function, continuous gas supply is guaranteed from ignition to the flame detector detecting the flame.

[0011] Furthermore, the flame detector and the gas outlet end of the gas nozzle are on the same plane, so that the flame is located right in front of the flame detector.

[0012] By limiting the position of the flame detector and the gas outlet end of the gas nozzle, the flame detector can accurately detect the flame.

[0013] Furthermore, the control box is provided with a 24V power supply conversion switch, and the 24V power supply conversion switch is electrically connected to the solenoid valve and the controller.

[0014] By setting a 24V power conversion switch, the control box can directly supply power to the controller and solenoid valve.

[0015] Furthermore, the controller has a 30-second delay function.

[0016] Furthermore, the input and output lines of the control box are provided with aviation plugs.

[0017] By setting up an aviation plug, the operation of the control box is more convenient and flexible.

[0018] The beneficial effects of the present invention are: The flameout detection and alarm system for a tank furnace, equipped with a flame detector and solenoid valve, can promptly shut off the gas after flameout, ensuring that it does not continue to ignite, thus avoiding the safety hazards caused by continued ignition after flameout. The alarm terminal can promptly notify on-site personnel to address the fire channel, which is more efficient than conventional manual inspections. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of a flameout detection and alarm system for a tank furnace according to the present invention.

[0020] In the figure: 1. Tank furnace; 2. Fire channel; 3. Gas main pipe; 4. Stop valve; 5. Ball valve; 6. Needle valve; 7. Gas branch pipe; 8. Metal hose; 9. Gas nozzle; 10. Solenoid valve; 11. Flame detector; 12. Control box; 13. External power supply; 14. Alarm terminal. DETAILED DESCRIPTION

[0021] To better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and through specific embodiments. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0022] like Figure 1 As shown, a flameout detection and alarm system for a tank furnace includes a flame detector 11, a control box 12, a solenoid valve 10, and an alarm terminal 14. The flame detector 11 is provided at the entrance of the fire channel 2, and the flame detector 11 is electrically connected to the control box 12. The solenoid valve 10 is provided at the air inlet end of the gas nozzle 9, and the solenoid valve 10 is electrically connected to the control box 12. The flame detector 11 transmits an electrical signal indicating whether a flame is detected to the control box 12. When a flame is detected, the control box 12 controls the solenoid valve 10 to open, and the gas enters the fire channel 2. When no flame is detected, the control box 12 controls the solenoid valve 10 to close, the alarm terminal 14 sounds an alarm, and the gas stops entering the fire channel 2.

[0023] By setting up an alarm system with a flame detector 11 and a solenoid valve 10, the gas can be shut off in time after the flame is extinguished to ensure that it does not continue to spray, thereby avoiding the safety hazards caused by continued spraying after the flame is extinguished.

[0024] The fire channel 2 is the first-layer fire channel 2 in the tank furnace 1. The air inlet end of the gas nozzle 9 is connected to the gas main 3 through a metal hose 8 and a gas branch pipe 7 in sequence. The gas branch pipe 7 is provided with a stop valve 4, a ball valve 5 and a needle valve 6 in sequence along the direction in which the gas enters the fire channel 2.

[0025] Specifically, it also includes an alarm terminal 14, which is electrically connected to the control box 12. When no flame is detected, the control box 12 controls the alarm terminal 14 to sound an alarm.

[0026] By setting up the alarm terminal 14, on-site staff can be notified in time to go to the fire channel 2 to extinguish the fire and take action, which is more efficient than conventional manual inspections one by one.

[0027] More specifically, the alarm terminal 14 is installed in the centralized control room and emits sound and light warnings when receiving an alarm signal. The operator can dispatch nearby personnel to find the fire channel 2 for extinguishing the fire in a timely manner according to the corresponding numbered alarm in the centralized control room, which is more efficient.

[0028] Specifically, a controller for controlling the opening and closing of the solenoid valve 10 is provided inside the control box 12 . The controller has a delay function, and the delay function is used to keep the solenoid valve 10 normally open during ignition.

[0029] After the flame goes out, the flame detector 11 detects no flame, and the controller in the control box 12 closes the solenoid valve 10, stopping the gas supply. When igniting again, due to the possible delay of the flame detector 11, the controller must continue to power the solenoid valve 10 to maintain combustion from the time the flame appears until the flame detector 11 detects the flame. Therefore, a controller with a delay function is provided to ensure continuous gas supply from ignition to the time the flame detector 11 detects the flame.

[0030] Specifically, the flame detector 11 and the gas outlet end of the gas nozzle 9 are on the same plane, so that the flame is located right in front of the flame detector 11 .

[0031] The flame detector 11 detects the presence of flames by temperature, flame, or other means. By limiting the position of the flame detector 11 and the outlet end of the gas nozzle 9, the flame detector 11 can accurately detect the flame. The flame detector 11 can be an ionization type or other detector capable of detecting flames in the fire channel 2.

[0032] Specifically, the control box 12 is provided with a 24V power supply conversion switch, and the 24V power supply conversion switch is electrically connected to the solenoid valve 10 and the controller.

[0033] The control box 12 is connected to the external power supply 13. By setting a 24V power conversion switch, the power supply of the external power supply 13 is converted into a 24V power supply through the 24V power conversion switch, so that the control box 12 can directly power the controller and the solenoid valve 10.

[0034] Specifically, the controller has a 30-second delay function.

[0035] Specifically, the input and output lines of the control box 12 are provided with aviation plugs.

[0036] By providing the aviation plug, the operation of the control box 12 is made more convenient and flexible.

[0037] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A flameout detection and alarm system for a tank furnace, characterized in that: The invention comprises a flame detector (11), a control box (12), a solenoid valve (10) and an alarm terminal (14); a flame detector (11) is provided at the entrance of the fire channel (2); the flame detector (11) is electrically connected to the control box (12); a solenoid valve (10) is provided at the air inlet end of the gas nozzle (9); and the solenoid valve (10) is electrically connected to the control box (12); The flame detector (11) transmits an electrical signal indicating whether a flame is detected to the control box (12). When a flame is detected, the control box (12) controls the electromagnetic valve (10) to open, and gas enters the fire channel (2). When no flame is detected, the control box (12) controls the electromagnetic valve (10) to close, and the alarm terminal (14) sounds an alarm, and gas stops entering the fire channel (2).

2. A flameout detection and alarm system for a tank furnace according to claim 1, characterized in that: It also includes an alarm terminal (14), which is electrically connected to the control box (12). When no flame is detected, the control box (12) controls the alarm terminal (14) to sound an alarm.

3. The flameout detection and alarm system for a tank furnace according to claim 1, characterized in that: A controller for controlling the switch of the solenoid valve (10) is provided inside the control box (12), and the controller has a delay function, and the delay function is used to keep the solenoid valve (10) normally open during ignition.

4. The flameout detection and alarm system for a tank furnace according to claim 1, characterized in that: The flame detector (11) and the gas outlet end of the gas nozzle (9) are in the same plane, so that the flame is located directly in front of the flame detector (11).

5. The flameout detection and alarm system for a tank furnace according to claim 3, characterized in that: The control box (12) is provided with a 24V power supply conversion switch, and the 24V power supply conversion switch is electrically connected to the solenoid valve (10) and the controller.

6. The flameout detection and alarm system for a tank furnace according to claim 3, characterized in that: The controller has a 30 second delay function.

7. The flameout detection and alarm system for a tank furnace according to claim 1, characterized in that: The inlet and outlet wires of the control box (12) are provided with aviation plugs.

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