Automatic release flare ignition system with combustible gas remote measurement function

Abstract

The utility model relates to a release flare automatic ignition system with combustible gas remote measurement, which comprises a release flare cylinder body which is vertically arranged on the ground and is used for conveying introduced release gas in an upper row, and the axial upper end of a gas conveying cylinder body of the release flare cylinder body is connected with a flare head. The plasma ignition module capable of igniting an emptying gas branch for ignition is connected to the axial lower section of a security burner of the torch head, and flame detection units capable of performing dual recognition and confirmation on flames are arranged on the torch head and the ground; a combustible gas telemetering sensing unit capable of monitoring emptying gas exhausted by the torch head is further arranged on one side of the emptying torch barrel. According to the utility model, the blow-down gas is directly ignited under the condition that the ignition module is protected by constructing the shunting pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of an automatic ignition system for a venting torch, in particular to an automatic ignition system for a venting torch with flammable gas telemetry. Background Art

[0002] During the process of oil extraction, petroleum gas is also produced. When the concentration ratio of petroleum gas to air reaches the explosion concentration limit, it is very easy to cause explosion and combustion due to sparks, etc., causing harm to the surrounding environment and equipment. In order to eliminate this safety hazard, this type of gas must be led to a high place through a pipeline and ignited and burned in a special burner. The above pipeline is called a venting torch in the field;

[0003] For example, in the prior art with publication number CN219913098U, the ignition gun is usually installed on the top of the flare head or at the outlet of the vent burner. When the gas discharged increases, the plasma ignition gun will be burned, causing a major safety hazard of ignition failure. In addition, the existing venting torch automatic ignition system (drilling ignition system) cannot accurately detect the venting (discharge) signal through the flow switch for low-flow discharge, which can easily cause safety hazards such as automatic ignition failure of the venting torch (drilling or separator). Utility Model Content

[0004] The utility model aims to provide an automatic ignition system for a venting torch with combustible gas telemetry, which can effectively identify the venting emission situation by monitoring a plurality of different parameters to ensure the effectiveness of ignition, and at the same time directly ignite the venting gas while protecting the ignition module by constructing a diversion pipeline, so as to overcome the defect that the traditional venting torch adopts a flow switch and cannot automatically ignite when the flow rate is small, and solves the problem that the ignition module (ignition electrode) is installed at the torch outlet to directly ignite the venting gas at the torch outlet and is easily burned by the flame.

[0005] The technical solution adopted by the utility model is: an automatic ignition system of a venting torch with combustible gas telemetry, comprising a venting torch barrel body erected on the ground and carrying out upward conveying of introduced venting gas, a flare head for protecting a plasma ignition module from burning by dividing the conveyed venting gas into a venting gas branch flow for ignition and a main venting gas flow for emission and combustion connected to the axial upper end of the gas transmission barrel body of the venting torch barrel body, the plasma ignition module capable of igniting the venting gas branch flow for ignition connected to the axial lower section of the safety burner of the flare head, and a flame detection unit capable of dual identification and confirmation of the flame is arranged on the flare head and on the ground; a combustible gas telemetry sensor unit capable of monitoring the venting gas discharged by the flare head is also arranged on one side of the venting torch barrel body.

[0006] According to a preferred embodiment, the flare head includes a diverter pipe body, a safety burner, a wind shield, a flare head barrel and a flare head connecting flange, wherein the flare head barrel is connected to the axial upper end of the venting flare barrel by the flare head connecting flange arranged at its axial lower end; the wind shield is arranged at the axial upper end of the flare head barrel; the diverter pipe body inserts part of its tube cavity into the flare head barrel in a manner of diverting part of the venting gas in the upper row of the flare head barrel and conveying it to the safety burner connected thereto.

[0007] According to a preferred embodiment, at least two of the safety burners are arranged in parallel on both sides of the flare head barrel in a double ignition manner; the axial lower end of the safety burner is connected to the output end of the diverter pipe body, and the axial upper end of the safety burner is inserted into the wind shield, so as to ignite the vent gas discharged from the axial upper end of the flare head barrel.

[0008] According to a preferred embodiment, the axial lower end of the diverter pipe body is configured as an expansion-type air inlet port in a manner that allows sufficient diversion of the vent gas to form a vent gas branch for ignition; and a parallel tube cavity is constructed at the axial upper end of the diverter pipe body that can perform secondary separation on the vent gas branch for ignition and simultaneously introduce the branch into two parallel safety burners.

[0009] According to a preferred embodiment, a plasma ignition gun of the plasma ignition module for igniting the venting gas delivered by the plasma ignition module is connected to the side of the safety burner.

[0010] According to a preferred embodiment, the plasma ignition module includes a plasma ignition generating unit, a plasma ignition gun, a plasma ignition cable, a self-cleaning unit and a self-cleaning pipeline, wherein the plasma ignition generating unit is connected to the plasma ignition gun via the plasma ignition cable; and the self-cleaning unit arranged on one side of the plasma ignition generating unit is connected to the plasma ignition gun via the self-cleaning pipeline.

[0011] According to a preferred embodiment, the flame detection unit includes a photosensitive sensor unit and a thermocouple sensor unit, both of which can identify whether the torch head burns the exhaust gas to generate a flame.

[0012] According to a preferred embodiment, the photosensitive sensor unit is installed on the ground in a manner to identify ultraviolet rays or infrared rays in the flame through the air; the thermocouple sensor unit is installed on the windshield in a manner to identify the flame through the flame temperature.

[0013] According to a preferred embodiment, a venting gas inlet connected to a venting gas delivery pipeline is provided on the side wall of the gas delivery cylinder; and the gas delivery cylinder is supported on the ground by a base.

[0014] According to a preferred embodiment, the combustible gas telemetry sensing unit, the flame detection unit and the plasma ignition module are all connected to the ignition control module via data signals.

[0015] The beneficial effects of the utility model are:

[0016] The utility model adopts a combustible gas telemetry sensor unit and an infrared combustible gas detection sensor unit to realize the emission detection of the venting gas, which can overcome the defect that the traditional venting torch adopts a flow switch and cannot automatically ignite when the flow rate is small, and greatly improves the reliability of the automatic ignition of the venting torch. At the same time, the utility model adopts an ignition method with a safety burner. The ignition gas source of the safety burner comes from the diversion of the venting gas. At the same time, the ignition position is located at the bottom of the safety burner, and the plasma ignition electrode is far away from the outlet of the torch head barrel, avoiding the major safety hazard of the traditional plasma ignition system that the electrode is installed at the top of the torch outlet and is burned and cannot be ignited. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a preferred venting flare automatic ignition system with combustible gas remote sensing proposed by the utility model;

[0018] Figure 2 This is a working principle diagram of venting gas diversion by a torch head of a preferred venting flare automatic ignition system with combustible gas telemetry proposed by the utility model;

[0019] Figure 3 It is a structural schematic diagram of another embodiment of a preferred venting flare automatic ignition system with combustible gas remote sensing proposed by the utility model.

[0020] Reference numerals list

[0021] 1: Combustible gas telemetry sensor unit; 2: Flare head; 3: Flame detection unit; 4: Plasma ignition module; 5: Ignition control module; 6: Venting torch barrel; 7: Infrared combustible gas detection sensor unit; 8: Venting flow signal detection sensor unit; 21: Diverter pipe body; 22: Safety burner; 23: Wind shield; 24: Flare head barrel; 25: Flare head connecting flange; 31: Photosensitive sensor unit; 32: Thermocouple sensor unit; 41: Plasma ignition generation unit; 42: Plasma ignition gun; 43: Plasma ignition cable; 44: Self-cleaning unit; 45: Self-cleaning pipeline; 61: Gas transmission cylinder; 62: Venting gas inlet; 63: Base. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be briefly introduced below in combination with the drawings and the descriptions of the embodiments or the prior art. Obviously, the following descriptions of the structures of the drawings are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] The technical solution provided by the present invention will be described in detail below by way of examples with reference to the accompanying drawings. It should be noted that the description of these examples is used to help understand the present invention, but does not constitute a limitation of the present invention. In some examples, some implementation methods are not described or are not described in detail because they belong to existing or conventional technologies.

[0024] In addition, the technical features recorded in this article, or the steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can also be combined in any suitable manner in one or more embodiments. For those skilled in the art, it is easy to understand that the steps or operation sequence of the methods related to the embodiments provided herein can also be changed. Any order in the drawings and embodiments is only for illustrative purposes and does not imply a requirement to follow a certain order unless it is explicitly stated that a certain order is required.

[0025] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, under reasonable circumstances (not constituting a self-contradiction), include direct and indirect connections (couplings).

[0026] The following is a detailed description with reference to the accompanying drawings.

[0027] Example 1

[0028] The present application provides an automatic ignition system for a venting torch with combustible gas telemetry, which includes a combustible gas telemetry sensor unit 1, a torch head 2, a flame detection unit 3, a plasma ignition module 4, an ignition control module 5 and a venting torch barrel 6.

[0029] according to Figure 1-2A specific embodiment is shown, in which the venting torch barrel 6 is erected on the ground and the introduced venting gas is transported upward. The axial upper end of the gas delivery barrel 61 of the venting torch barrel 6 is connected to a torch head 2 that divides the venting gas it transports into a venting gas branch for ignition and a main venting gas for emission combustion to protect the plasma ignition module 4 from burning. The axial lower section of the safety burner 22 of the flare head 2 is connected to a plasma ignition module 4 that can ignite the venting gas branch for ignition. A flame detection unit 3 that can double-identify and confirm the flame is arranged on the flare head 2 and the ground. A combustible gas telemetry sensor unit 1 that can monitor the venting gas discharged by the flare head 2 is also arranged on the ground of the venting area. Infrared combustible gas detection sensor units 7 and venting flow signal detection sensor units 8 are also arranged at intervals on the horizontal pipe body defined by the venting gas inlet 62 of the venting torch barrel 6. The combustible gas telemetry sensing unit 1 and the infrared combustible gas detection sensing unit 7 can both make exhaust feedback when the venting gas is discharged at a small flow rate or a large flow rate, so as to generate a waiting ignition instruction by outputting an exhaust signal for feedback; the venting flow signal detection sensing unit 8 can both make venting discharge feedback when the venting gas is discharged at a large flow rate, so as to generate a waiting ignition instruction by outputting an exhaust signal for feedback, so as to mutually verify the emission conditions monitored by the infrared combustible gas detection sensing unit 7, the venting flow signal detection sensing unit 8 and the combustible gas telemetry sensing unit 1 to ensure the accuracy of ignition. The combustible gas telemetry sensing unit 1, the flame detection unit 3, the plasma ignition module 4, the infrared combustible gas detection sensor 7 and the venting flow signal detection sensor 8 are all connected to the ignition control module 5 data signal. The ignition control module 5 is a conventional PLC controller. The present application can directly ignite the venting gas without the need for a fuel medium, so as to achieve the purpose of energy saving and emission reduction, and ignition at the same time (ignition at the time of emission, and ignition at the time of non-emission).

[0030] Preferably, the combustible gas remote sensing unit 1 is a laser combustible gas sensor: its principle is based on the absorption characteristics of gas molecules to laser beams of specific wavelengths. Since different gases absorb lasers at different intensities, the reflected laser intensities are different. The type of gas can be determined based on the reflected laser intensities. The combustible gas remote sensing unit 1 can be installed remotely on the ground, with its detection end facing the outlet of the flare head 2.

[0031] Preferably, the flare tip 2 comprises a diverter pipe body 21, a safety burner 22, a wind shield 23, a flare tip barrel 24 and a flare tip connecting flange 25. Preferably, the flare tip barrel 24 is connected to the axial upper end of the gas delivery cylinder 61 through the flare tip connecting flange 25 arranged at its axial lower end. Preferably, a wind shield 23 is arranged at the axial upper end of the flare tip barrel 24. Preferably, the diverter pipe body 21 partially inserts its lumen into the flare tip barrel 24 in a manner of diverting part of the vent gas flowing upward in the flare tip barrel 24 and conveying it to the safety burner 22 connected thereto. Further preferably, at least two safety burners 22 are arranged in parallel on both sides of the flare tip barrel 24 in a manner of double ignition to ensure ignition effectiveness and accuracy. Further preferably, the axial lower end of the safety burner 22 is connected to the output end of the diverter tube body 21, and the axial upper end of the safety burner 22 is inserted into the wind shield 23, so as to ignite the vent gas discharged from the axial upper end of the flare head barrel 24. Specifically, the axial lower end of the diverter tube body 21 is set as an expansion type air inlet port in a manner that the vent gas can be diverted in sufficient amount to form a vent gas branch for ignition. Further preferably, a parallel tube cavity capable of performing secondary separation of the vent gas branch for ignition and synchronously introducing it into two parallel safety burners 22 is constructed at the axial upper end of the diverter tube body 21. Preferably, a plasma ignition gun 42 of a plasma ignition module 4 capable of igniting the vent gas branch it transports is connected to the side of the axial lower section of the safety burner 22. Preferably, the height difference between the position where the tube of the safety burner 22 is connected to the plasma ignition gun 42 and the outlet of the flare head barrel 24 is not less than 2 meters, so as to ensure that the plasma ignition gun 42 is prevented from being burned by the vent gas output by the flare head barrel 24 and burning normally, thereby isolating and protecting the plasma ignition gun 42.

[0032] Preferably, the flame detection unit 3 includes a photosensitive sensor unit 31 and a thermocouple sensor unit 32, both of which can identify whether the flare head 2 burns the exhaust gas to generate a flame. Specifically, the photosensitive sensor unit 31 is installed on the ground in a manner that can remotely identify the ultraviolet rays or infrared rays in the combustion flame generated by the venting gas discharged from the flare head 2. Specifically, the thermocouple sensor unit 32 is installed on the wind shield 23 in a manner that can identify the flame by the flame temperature, so that the photosensitive sensor unit 31 and the thermocouple sensor unit 32 can identify the flame generated by the ignition of the venting gas from different dimensions, so as to perform dual monitoring of the combustion of the venting gas to ensure the monitoring accuracy, and the mutual verification of the two data also improves the accuracy and effectiveness of the monitoring feedback data.

[0033] Preferably, the plasma ignition module 4 includes a plasma ignition generating unit 41, a plasma ignition gun 42, a plasma ignition cable 43, a self-cleaning unit 44 and a self-cleaning pipeline 45. Preferably, the plasma ignition generating unit 41 arranged on the ground is connected to the plasma ignition gun 42 via the plasma ignition cable 43. Further preferably, a self-cleaning unit 44 is also arranged on one side of the plasma ignition generating unit 41. Preferably, the self-cleaning unit 44 is connected to the plasma ignition electrode mounting chamber of the plasma ignition gun 42 via the self-cleaning pipeline 45. Preferably, the model of the plasma ignition generating unit 41 is MW-GHE-500, the model of the plasma ignition gun 42 is MW-DLQ-3000, the model of the plasma ignition cable 43 is MW-TZ-2.0, and the model of the self-cleaning unit 44 is MW-DDX-10

[0034] Preferably, a venting gas inlet 62 connected to a venting gas delivery pipeline is provided on the side wall of the gas delivery cylinder 61. Preferably, the gas delivery cylinder 61 is supported on the ground by a base 63 provided at its axial lower end.

[0035] When the natural gas station starts to vent, different sensor units capture the emission information of the vented gas (ie, combustible gas) according to the displacement of the vented gas.

[0036] Specifically, when the vent gas (combustible gas) is discharged at a large flow rate:

[0037] After the vent gas (combustible gas) is input from the vent gas inlet 62, the vent flow signal detection sensor unit 8 detects the vent flow signal, and the infrared combustible gas detection sensor unit 7 detects the combustible gas signal. At the same time, the vent gas enters the flare head 2 from the top of the gas cylinder body 61, and the axial upper end outlet of the flare head 2 sprays out combustible gas. The combustible gas telemetry sensor unit 1 detects the discharge of combustible gas and feeds back the combustible gas emission signal to the ignition control module 5. At the same time, the vent flow signal detection sensor unit 8 also sends the vent flow signal to the ignition control module 5, and the infrared combustible gas detection sensor unit 7 also sends the combustible gas signal to the control system 5. The ignition control module 5 sends an ignition signal to the plasma ignition generating unit 41. The high voltage output by the plasma ignition generating unit 41 is transmitted to the plasma ignition gun 42 at the top through the plasma ignition cable 43. The plasma ignition gun 42 begins to break through the air to generate a plasma arc. At the same time, the diverter tube 21 in the flare head 2 diverts a part of the venting gas into the lower part of the safety burner 22. The venting gas entering the lower part of the safety burner 22 encounters the plasma arc generated by the plasma ignition gun 42 and is immediately ignited. The ignited flame is quickly ejected from the lower part of the safety burner 22 from the outlet of the safety burner 22. The ejected flame ignites the main venting gas at the outlet of the flare head barrel 24, so that the venting gas is discharged and burned normally. When the flame detection unit 3 detects that the venting gas is burning normally, it gives an ignition signal to the ignition control module 5. The ignition control module 5 receives the torch ignition signal and gives an ignition shutdown signal to the plasma ignition generating unit 41. The plasma ignition generating unit 41 stops ignition.

[0038] Specifically, when the vent gas (combustible gas) is discharged at a small flow rate:

[0039] After the vent gas (combustible gas) is input from the vent gas inlet 62, the infrared combustible gas detection sensor unit 7 detects the combustible gas signal. At the same time, the vent gas enters the flare head 2 from the top of the gas cylinder body 61, and the axial upper end outlet of the flare head 2 sprays out combustible gas. The combustible gas telemetry sensor unit 1 detects the discharge of combustible gas, thereby feeding back the combustible gas emission signal to the ignition control module 5, and the infrared combustible gas detection sensor unit 7 also sends the combustible gas signal to the control system 5. The ignition control module 5 gives an ignition signal to the plasma ignition generating unit 41. The high-voltage current output by the plasma ignition generating unit 41 is transmitted to the plasma ignition gun 42 at the top through the plasma ignition cable 43. The plasma ignition gun 42 begins to break down the air generation. A plasma arc is generated. At the same time, the diverter tube 21 in the flare head barrel 24 diverts a part of the vent gas into the lower part of the safety burner 22. The vent gas entering the lower part of the safety burner 22 encounters the plasma arc generated by the plasma ignition gun 42 and is immediately ignited. The ignited flame is rapidly ejected from the lower part of the safety burner 22 from the outlet of the safety burner 22. The ejected flame ignites the main vent gas at the outlet of the flare head barrel 24, so that the vent gas is discharged and burned normally. When the flame detection unit 3 detects that the vent gas is burning normally, it gives an ignition signal to the ignition control module 5. The ignition control module 5 receives the torch ignition signal and gives an ignition shutdown signal to the plasma ignition generating unit 41. The plasma ignition generating unit 41 stops ignition.

[0040] Since the medium discharged by the venting torch contains a lot of impurities, in order to ensure the reliability of ignition and extend the life of the plasma ignition gun, the present application introduces a self-cleaning unit 44. The self-cleaning unit 44 is a micro fan. When the venting torch is put into operation, the ignition control module 5 starts the micro fan to send wind to the plasma ignition electrode of the plasma ignition gun at the top of the venting torch barrel 6 through the self-cleaning pipeline 45, so that the ignition electrode can be kept clean (not short-circuited), thereby reliably generating plasma arc ignition. At the same time, the wind sent by the micro fan is mixed with the venting gas entering the lower part of the safety burner 22 at the lower part of the safety burner 22, and the mixed combustible gas (sufficient oxygen) ensures the reliability of ignition and combustion. At the same time, the wind sent by the micro fan also has the function of cooling the plasma ignition electrode.

[0041] The utility model adopts a combustible gas telemetry sensor unit 1 and an infrared combustible gas detection sensor unit 7 to realize the emission detection of the venting gas, which can overcome the defect that the traditional venting torch adopts a flow switch and cannot automatically ignite when the flow rate is small, and greatly improves the reliability of the automatic ignition of the venting torch. At the same time, the utility model adopts an ignition method with a safety burner 22, and the ignition gas source of the safety burner 22 comes from the diversion of the venting gas. At the same time, the ignition position is located at the bottom of the safety burner 22, and the plasma ignition electrode is far away from the outlet of the torch head barrel 24, avoiding the major safety hazard of the traditional plasma ignition system that the electrode is installed at the top of the torch outlet and cannot be burned and ignited.

[0042] Example 2

[0043] This embodiment is a further improvement on the basis of the embodiment 1, and the repeated contents will not be repeated here.

[0044] like Figure 3 As shown, in order to ensure the adjustability of the ignition and combustion intensity of the safety burner 22, the side pipe port connected to the plasma ignition gun 42 and the main pipe body of the safety burner 22 are arranged in a manner to form an inclined upward angle, so that the clean air output by the plasma ignition gun 42 can be transported upward along the tube cavity of the main pipe body of the safety burner 22 under the action of its own flow force, so that it can pull the vent gas diverted by the safety burner 22 to change the flow rate of the vent gas branch used for ignition. This is because the directional flow of the clean gas in the safety burner 22 can form a traction airflow, so that a local negative pressure environment is formed in the lower part of the tube cavity of the safety burner close to the air intake device 2.1. The traction of the vent gas can change the flow rate of the ignition vent gas branch by changing the flow rate of the clean airflow, so that when the composition of the vent gas changes and the flammability changes, the branch vent airflow with adjustable flow rate and the clean air with variable oxygen mixing amount can be used to achieve effective ignition.

[0045] The present utility model is not limited to the above optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope of the claims of the present utility model fall within the protection scope of the present utility model. Those skilled in the art should understand that the present utility model specification and its drawings are illustrative and do not constitute limitations on the claims. The protection scope of the present utility model is defined by the claims and their equivalents. Throughout the text, the features guided by "preferably" are only an optional method and should not be understood as having to be set. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A flare automatic ignition system with combustible gas remote sensing, comprising a flare barrel (6) erected on the ground for conveying the introduced flare gas upward, characterized in that: The axial upper end of the gas delivery cylinder (61) of the venting flare cylinder (6) is connected to a flare head (2) for dividing the vent gas delivered by the vent gas into a branch vent gas flow for ignition and a main vent gas flow for combustion discharge, thereby protecting the plasma ignition module (4) from burning. The plasma ignition module (4) capable of igniting the ignition exhaust gas branch is connected to the axial lower section of the safety burner (22) of the flare head (2), and a flame detection unit (3) capable of dual recognition and confirmation of the flame is arranged on the flare head (2) and the ground; A combustible gas telemetry sensor unit (1) capable of monitoring the venting gas discharged by the flare head (2) is also arranged on one side of the venting flare barrel (6).

2. The flare automatic ignition system with combustible gas remote sensing according to claim 1, characterized in that: The flare head (2) comprises a flow divider (21), a safety burner (22), a wind shield (23), a flare head barrel (24) and a flare head connecting flange (25), wherein: The flare head barrel (24) is connected to the axial upper end of the gas delivery barrel (61) via the flare head connecting flange (25) arranged at the axial lower end thereof; The wind shield (23) is provided at the axial upper end of the flare head barrel (24); The diverter tube (21) has a portion of its lumen inserted into the flare head barrel (24) in such a manner as to divert part of the vented gas in the upper row in the flare head barrel (24) and transport it to the safety burner (22) connected thereto.

3. The flare automatic ignition system with combustible gas remote sensing according to claim 2, characterized in that: At least two of the safety burners (22) are arranged in parallel on both sides of the flare head barrel (24) in a double ignition manner; The axial lower end of the safety burner (22) is connected to the output end of the diverter pipe body (21), and the axial upper end of the safety burner (22) is inserted into the wind shield (23).

4. The flare automatic ignition system with combustible gas remote sensing according to claim 3, characterized in that: The axial lower end of the flow dividing pipe body (21) is arranged as an expansion type air inlet port in a manner that a sufficient amount of the exhaust gas can be divided to form an exhaust gas branch for ignition; A parallel tube cavity is constructed at the axial upper end of the flow dividing tube body (21) for performing secondary separation on the ignition exhaust gas branch flow and synchronously introducing the branch flow into the two parallel safety burners (22).

5. The flare automatic ignition system with combustible gas remote sensing according to claim 4, characterized in that: A plasma ignition gun (42) of the plasma ignition module (4) for igniting the venting gas delivered by the safety burner (22) is connected to the side of the safety burner (22).

6. The flare automatic ignition system with combustible gas remote sensing according to claim 5, characterized in that: The plasma ignition module (4) comprises a plasma ignition generating unit (41), a plasma ignition gun (42), a plasma ignition cable (43), a self-cleaning unit (44) and a self-cleaning pipeline (45), wherein: The plasma ignition generating unit (41) is connected to the plasma ignition gun (42) via the plasma ignition cable (43); The self-cleaning unit (44) disposed on one side of the plasma ignition generating unit (41) is connected to the plasma ignition gun (42) via a self-cleaning pipeline (45).

7. The flare automatic ignition system with combustible gas remote sensing according to claim 6, characterized in that: The flame detection unit (3) comprises a photosensitive sensor unit (31) and a thermocouple sensor unit (32), both of which can identify whether the flare head (2) discharges air to the outside to generate a flame for combustion.

8. The flare automatic ignition system with combustible gas remote sensing according to claim 7, characterized in that: The photosensitive sensor unit (31) is installed on the ground in a manner of identifying ultraviolet rays or infrared rays in the flame through air; The thermocouple sensing unit (32) is mounted on the wind shield (23) in a manner capable of identifying the flame by the flame temperature.

9. The flare automatic ignition system with combustible gas remote sensing according to claim 8, characterized in that: A venting gas inlet (62) connected to a venting gas delivery pipeline is provided on the side wall of the gas delivery cylinder (61); The gas delivery cylinder body (61) is supported on the ground via a base (63).

10. The flare automatic ignition system with combustible gas remote sensing according to claim 9, characterized in that: The combustible gas telemetry sensor unit (1), the flame detection unit (3) and the plasma ignition module (4) are all connected to the ignition control module (5) via data signals.

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