Ignition system of torch incandescent light

Abstract

The utility model discloses a torch incandescent light ignition system which is arranged above a torch incandescent light and comprises a gas source, a burner, a gas pipe and a temperature sensor. The two ends of the gas pipe are fixedly communicated with the gas source and the combustor respectively, and the combustor is arranged above the torch incandescent light to ignite the torch incandescent light; a pressure reducing valve, an automatic control valve, a one-way valve and a flame arrester are sequentially fixed on the air pipe along the conveying direction; the temperature sensor is arranged above the torch incandescent light to monitor the combustion state of the torch incandescent light, and the temperature sensor is in communication connection with the automatic control valve. The temperature sensor is used for monitoring the combustion state of the torch incandescent light, the automatic control valve is opened to convey gas to ignite the torch incandescent light after the torch incandescent light is extinguished, an electronic ignition device does not need to be additionally arranged, the ignition efficiency is high, and the gas consumption is small; the automation degree is high, manual operation is not needed after system setting, and control is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of torch systems, and more specifically to a torch pilot ignition system. Background Art

[0002] In the metallurgical and chemical industries, hydrogen-rich torch gas, ammonia-rich torch gas, and acidic torch gas are often generated. Direct emission not only pollutes the environment but also poses certain safety hazards. Therefore, a torch system is required to burn the corresponding torch gas so that the treated gas meets the emission standards.

[0003] The torch system is an important safety facility and energy-saving and environmental protection facility in chemical plants. The torch system can timely process flammable and toxic gases generated under normal, accident, emergency, and abnormal production conditions, burn them safely, and eliminate existing hazards. To ensure that the torch can be ignited in time when needed, it is necessary to ensure that the pilot lights of the torch can continue to burn, so that the flammable and toxic gases emitted at the torch head can be burned in time. Usually, multiple pilot lights are arranged around the torch head. The fuel gas source for the pilot lights of the torch system is crude gas or natural gas, etc.

[0004] However, the pilot lights in the torch system often go out during operation. The extinguishing of the pilot lights will cause the unburned flammable and toxic gases, seriously affecting the safe operation of chemical plants and not meeting the requirements of energy conservation and environmental protection.

[0005] Therefore, how to provide a system that can quickly ignite the torch pilot light after it goes out is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0006] In view of this, the utility model provides a torch pilot ignition system, which uses silane as the gas source to ensure that the torch pilot light can continue to burn and operate stably.

[0007] To achieve the above object, the utility model adopts the following technical solutions:

[0008] A torch pilot ignition system is arranged above the torch pilot light and includes a gas source, a burner, a gas pipe, and a temperature sensor;

[0009] Both ends of the gas pipe are fixedly connected to the gas source and the burner respectively. The burner is arranged above the torch pilot light to ignite it;

[0010] The gas pipe is successively fixed with a pressure reducing valve, an automatic control valve, a check valve, and a flame arrester along its conveying direction;

[0011] The temperature sensor is arranged above the torch pilot light to monitor the combustion state of the torch pilot light, and the temperature sensor is communicatively connected to the automatic control valve.

[0012] The beneficial effects of the above technical solution are as follows: The combustion gas generated by the gas source is transported through the gas pipe. The temperature sensor monitors the combustion state of the torch pilot light. When the torch pilot light goes out, the automatic control valve opens, and the combustion gas passes through the pressure reducing valve, the automatic control valve, the check valve and the combiner in sequence to reach the burner for combustion. After the burner burns, it can ignite the torch pilot light; the check valve can prevent the gas at the burner from flowing back, and the flame arrester can prevent the flame from spreading, only allowing the gas to pass through while blocking the flame. The check valve and the flame arrester, as protection devices, effectively ensure the safe and effective operation of the ignition system.

[0013] Preferably, a pressure sensor and a pressure gauge are sequentially fixed on the gas pipe relative to the pipe between the pressure reducing valve and the automatic control valve along its conveying direction, and the pressure sensor and the pressure gauge are used to monitor the gas pressure in the gas pipe.

[0014] Preferably, the effective pressure value of the pressure gauge is 0.05 - 3 MPa.

[0015] Preferably, service valves are fixed on the gas pipe relative to the pipes on both sides of the automatic control valve. When the automatic control valve fails, the service valve can be closed to prevent the gas in the gas pipe from flowing, so as to perform maintenance or replacement operations on the automatic control valve.

[0016] Preferably, a bronchus is connected in series on the gas pipe relative to the pipes on the side of the two service valves away from the automatic control valve, and a manual switch valve is fixed on the bronchus. When the automatic control valve is being repaired or replaced and the torch pilot light goes out at this time, the manual switch valve can be used to control the gas transportation of the gas pipe to ignite the torch pilot light, ensuring that the ignition system can be manually controlled in case of failure.

[0017] Preferably, the gas source transports silane gas, and the torch pilot light uses natural gas as the fuel source. The torch pilot light burns with natural gas during the design stage. When an emergency occurs, the ignition system starts. After the silane gas is transported to the burner, it can auto-ignite. At the same time, the torch pilot light continuously transports natural gas, and the burning silane gas ignites the torch pilot light, making full use of the auto-ignition characteristics of silane without the need to additionally configure an electronic ignition device.

[0018] Preferably, the automatic control valve is communicatively connected to a PLC control system or a DCS control system. The ignition system adopts automatic control, and the automatic ignition of the torch pilot light is realized by the cooperation of the temperature sensor and the automatic control valve.

[0019] As can be seen from the above technical solutions, compared with the prior art, the present utility model discloses a torch pilot light ignition system. The combustion state of the torch pilot light is monitored by a temperature sensor. After the torch pilot light goes out, an automatic control valve opens to deliver silane gas for ignition. By making full use of the spontaneous combustion characteristics of silane, there is no need to additionally configure an electronic ignition device, with high ignition efficiency and less gas consumption; the degree of automation is high, and no manual operation is required after the system is set up, and the automatic control is simple.

[0020] The ignition system provided by the present utility model occupies a small space and is suitable for igniting pilot lights of different combustible gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of the ignition system provided by the present utility model.

[0023] Among them,

[0024] 1 - torch pilot light; 2 - gas source; 3 - gas pipe; 4 - burner; 5 - pressure reducing valve; 6 - automatic control valve; 7 - check valve; 8 - flame arrester; 9 - temperature sensor; 10 - pressure sensor; 11 - pressure gauge; 12 - maintenance valve; 13 - manual switch valve; 14 - branch pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] Refer to the attached Figure 1 , the embodiment of the present utility model discloses a torch pilot light ignition system, which is arranged above the torch pilot light 1 and includes a gas source 2, a burner 4, a gas pipe 3 and a temperature sensor 9;

[0027] Both ends of the gas pipe 3 are fixedly connected to the gas source 2 and the burner 4 respectively, and the burner 4 is arranged above the torch pilot light 1 to ignite it;

[0028] A pressure reducing valve 5, an automatic control valve 6, a check valve 7, and a flame arrester 8 are successively fixed on the gas pipe 3 along its conveying direction.

[0029] A temperature sensor 9 is arranged above the flare pilot burner 1 to monitor the combustion state of the flare pilot burner 1, and the temperature sensor 9 is communicatively connected to the automatic control valve 6.

[0030] To further optimize the above technical solution, the gas source 2 conveys silane gas, and the flare pilot burner 1 uses natural gas as the fuel source.

[0031] In this embodiment, the flare pilot burner uses natural gas as fuel for combustion during the design stage, but it will go out due to unexpected situations inside the flare during the combustion process; the temperature sensor can monitor the combustion state of the flare pilot burner in real time. When the flare pilot burner goes out due to unexpected situations, the temperature sensor feeds back the signal to the automatic control valve, and the automatic control valve opens. The silane gas conveyed by the gas source will successively pass through the pressure reducing valve, the automatic control valve, the check valve, and the flame arrester to reach the burner for spontaneous combustion and ignite the flare pilot burner.

[0032] The automatic control valve controls the opening and closing of the gas pipe passage. When the automatic control valve is closed, the silane gas will not be conveyed to the burner, and the silane gas is conveyed only when the automatic control valve is opened; the pressure reducing valve can reduce the air pressure of the silane gas in the gas pipe to prevent explosion; the check valve only allows the silane gas to be conveyed in one direction, and the silane gas reaching the flame arrester will not flow back into the gas pipe; the flame arrester can prevent the spread of fire; through multiple protection mechanisms, the safe, effective, and stable operation of the ignition system is effectively guaranteed.

[0033] In some other specific embodiments, the flare pilot burner is not limited to using natural gas for combustion, and the ignition system is applicable to the ignition of various combustible gases.

[0034] To further optimize the above technical solution, to monitor the conveying pressure of the silane gas, a pressure sensor 10 and a pressure gauge 11 are successively fixed on the pipe between the gas pipe 3 relative to the pressure reducing valve 5 and the automatic control valve 6 along its conveying direction.

[0035] In this embodiment, the applicable ignition pressure range of the ignition system is 0.05 - 3 MPa.

[0036] To further optimize the above technical solution, service valves 12 are fixed on the pipes on both sides of the automatic control valve 6 relative to the gas pipe 3.

[0037] When the automatic control valve fails, the service valve can be closed to cut off the gas pipe passage, so as to perform maintenance or replacement operations on the automatic control valve.

[0038] To further optimize the above technical solution and ensure that the automatic control valve can also ignite the torch pilot light during maintenance or replacement operations, a bronchus 14 is connected in series on the pipeline of the air pipe 3 on the side away from the automatic control valve 6 relative to the two maintenance valves 12, and a manual switch valve 13 is fixed on the bronchus 14.

[0039] To further optimize the above technical solution and achieve the automatic control of the ignition system, the automatic control valve 6 is communicatively connected to a PLC control system or a DCS control system.

[0040] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method part.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A kind of ignition system for the torch pilot light, which is arranged above the torch pilot light (1), and is characterized in that, It includes a gas source (2), a burner (4), a gas pipe (3), and a temperature sensor (9); Both ends of the gas pipe (3) are fixedly connected to the gas source (2) and the burner (4) respectively. The burner (4) is arranged above the torch pilot burner (1) to ignite it; Along the conveying direction of the gas pipe (3), a pressure reducing valve (5), an automatic control valve (6), a check valve (7), and a flame arrester (8) are fixedly arranged in sequence; The temperature sensor (9) is arranged above the torch pilot burner (1) to monitor the combustion state of the torch pilot burner (1), and the temperature sensor (9) is communicatively connected to the automatic control valve (6).

2. The ignition system for the torch pilot light according to claim 1, wherein On the pipe between the pressure reducing valve (5) and the automatic control valve (6) of the gas pipe (3), a pressure sensor (10) and a pressure gauge (11) are fixedly arranged in sequence along the conveying direction; 3. The kind of torch pilot ignition system according to claim 2, characterized in that, The effective value of the pressure of the pressure gauge (11) is 0.05 - 3 MPa; 4. A kind of ignition system for the long - burning torch according to claim 1, characterized in that, Maintenance valves (12) are fixedly arranged on the pipes on both sides of the automatic control valve (6) of the gas pipe (3); 5. A kind of ignition system for the long - burning lamp of a torch according to claim 4, characterized in that, A branch pipe (14) is connected in series on the pipe of the gas pipe (3) on the side far from the automatic control valve (6) of the two maintenance valves (12), and a manual switch valve (13) is fixedly arranged on the branch pipe (14); 6. The ignition system for the torch pilot light according to claim 1, characterized in that, The gas source (2) conveys silane gas, and the torch pilot burner (1) uses natural gas as the fuel source; 7. The ignition system for the long-burning pilot light of a torch according to claim 1, characterized in that The automatic control valve (6) is communicatively connected to a PLC control system or a DCS control system.

Images