A multi-point ground torch

Abstract

The present invention discloses a multi-point ground torch, which relates to the technical field of waste gas treatment equipment, and comprises: a multi-stage combustion system, wherein each stage of the combustion system comprises a plurality of burners, and the multi-stage combustion system is connected to a waste gas source pipeline, and the waste gas source pipeline can transport combustible gas to the burner for spraying; each stage of the combustion system is provided with an ignition system corresponding thereto, and the ignition system can ignite the combustible gas sprayed from the burner; a control unit controls the ignition system of each stage to ignite the corresponding combustion system; the multi-stage combustion system adopts different ignition systems and ignition methods, which can improve the combustion effect of combustible waste gas, reduce the fuel consumption of the ever-burning lamp, and reduce the operating cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of waste gas treatment equipment, and more specifically, relates to a multi-point ground flare. Background Art

[0002] Chemical plants such as petrochemicals and coal chemicals generate large amounts of harmful and combustible waste gases during their production processes. These gases need to be combusted using closed ground flare systems, open flare systems, and elevated flare systems before being discharged into the atmosphere. Current open flare systems contain numerous flare mixing burners, typically consisting of hundreds to thousands of mixing burners. To ensure safe ignition and combustion of combustible waste gases during discharge, dozens to hundreds of permanent lamps are required. The long-term burning of these permanent lamps consumes excessive amounts of natural gas and produces large amounts of carbon dioxide and nitrogen oxides. Long-term operation is not only very expensive but also environmentally unfriendly. Existing ground open flare mixing burners produce excessive noise, incomplete combustion of heavy components, and a large amount of black smoke. Furthermore, they produce large amounts of carbon dioxide and nitrogen oxides during discharge. Summary of the Invention

[0003] The purpose of the present invention is to address the deficiencies in the prior art and provide a multi-point ground torch with a multi-stage combustion system. It uses different ignition systems and ignition methods to improve the combustion effect of combustible waste gas, reduce the fuel consumption of the ever-burning lamp, and reduce operating costs.

[0004] In order to achieve the above object, the present invention provides a multi-point ground flare, comprising:

[0005] A multi-stage combustion system, each stage of which includes multiple burners, and the multi-stage combustion system is connected to an exhaust gas source pipeline, which can transport combustible gas to the burners for ejection;

[0006] Each level of the combustion system is provided with an ignition system corresponding thereto, and the ignition system is capable of igniting the combustible gas ejected from the burner;

[0007] A control unit controls the ignition system at each level to ignite the corresponding combustion system.

[0008] Optionally, the exhaust gas source pipeline includes:

[0009] An air inlet pipe, one end of which is connected to the exhaust gas source, and the other end of which is connected to a plurality of stepping pipes, each of which corresponds to a level of the combustion system, and each of which is connected to a plurality of burner connecting pipes;

[0010] a first control valve, disposed at the front end of each of the grading pipes;

[0011] The first pressure transmitter is arranged on one side of the first control valve.

[0012] Optionally, the burner comprises:

[0013] A nozzle connection seat, the lower end of which is connected to the burner connection pipe and the upper end of which is provided with a plurality of branch pipes;

[0014] a gas nozzle, arranged on the upper side of the plurality of branch pipes;

[0015] The flame nozzle is arranged at the upper end of the gas nozzle and comprises a flame nozzle shell. A flame nozzle inner plate is arranged in the flame nozzle shell. A plurality of tube holes are opened on the flame nozzle shell.

[0016] Optionally, the gas nozzle is arranged on the branch pipe, and the upper end of the flame nozzle shell is set to be straight cylindrical, and the lower end is set to be conical or straight cylindrical.

[0017] Optionally, the ignition system includes a first ever-burning lamp, at least one of which is provided in each stage of the combustion system, and the first ever-burning lamp includes:

[0018] A first gas source pipe, one end of which is connected to a gas source, and the other end of which is provided with a pilot light gas nozzle, the upper end of which is provided with a pilot light flame nozzle, and the pilot light flame nozzle is provided on one side of the upper end of the burner;

[0019] A first ignition electrode is disposed inside the flame nozzle of the pilot lamp;

[0020] A first thermocouple is arranged above the flame nozzle of the pilot lamp;

[0021] The first deflagration ignition ring tube is arranged at the upper end of the pilot lamp flame nozzle. The first deflagration ignition ring tube is provided with a first deflagration flame nozzle. One side of the first deflagration ignition ring tube is connected to a first deflagration gas pipe.

[0022] Optionally, the first gas source pipe is connected to the burner connecting pipe.

[0023] Optionally, the ignition system includes a second pilot lamp, at least two of which are provided in each stage of the combustion system, and the second pilot lamp includes:

[0024] An outer tube ignition gas pipe is nested inside an inner tube ignition gas pipe, the outer tube ignition gas pipe is provided with an outer tube high-energy ignition rod, the inner tube ignition gas pipe is provided with an inner tube high-energy ignition rod, the upper end of the outer tube ignition gas pipe is provided with an outer gas nozzle, and the upper end of the inner tube ignition gas pipe is provided with an inner gas nozzle;

[0025] A second gas source pipe, one end of which is connected to the gas source and the other end of which is provided with a venturi tube, the venturi tube being connected to the outer tube ignition gas pipe;

[0026] A pilot burner head is provided at the upper end of the outer ignition gas pipe, and has a combustion chamber provided therein. The lower end of the combustion chamber is connected to the outer ignition gas pipe and the inner ignition gas pipe, respectively. A flame outlet is provided at the upper end of the combustion chamber, a central air inlet is provided at the middle of the pilot burner head, and a drainage hole is provided at the lower end of the pilot burner head;

[0027] a second deflagration ignition ring tube, disposed at the upper end of the pilot lamp combustion head, the second deflagration ignition ring tube being provided with a second deflagration flame nozzle, and one side of the second deflagration ignition ring tube being connected to a second deflagration gas pipe;

[0028] a second thermocouple, disposed on one side of the middle air inlet;

[0029] The second ignition electrode is arranged in the combustion chamber.

[0030] Optionally, the second gas source pipe includes a first-level second gas source pipe and a second-level second gas source pipe, combustible gas is continuously introduced into the first-level second gas source pipe, and the second-level second gas source pipe is connected to the air inlet pipe.

[0031] Optionally, the ignition system includes a push rod movable ignition device, at least one of which is provided in the second-stage and above-second-stage combustion systems, and the push rod movable ignition device includes:

[0032] A bracket is arranged on one side of the middle portion of the grading tube;

[0033] an electrode mounting rod, rotatably connected to the bracket;

[0034] a third ignition electrode, disposed at the upper end of the electrode mounting rod, capable of igniting the burner;

[0035] a third thermocouple, disposed at the upper end of the burner;

[0036] a push rod hinged to the lower end of the electrode mounting rod;

[0037] The propulsion mechanism is arranged at one end of the push rod and can push the push rod to move.

[0038] Optionally, a second pressure transmitter and a second control valve are sequentially provided at the front end of the first-stage second gas source pipe from front to back.

[0039] The present invention provides a multi-point ground flare, which has the following beneficial effects:

[0040] 1. The ground flare has a multi-stage combustion system that can adjust the number of burners opened according to the air intake conditions, reduce combustion noise, ensure complete flame combustion, reduce combustion pollution, prevent safety accidents and environmental pollution caused by incomplete combustion, reduce emissions of harmful combustion products such as carbon dioxide and nitrogen oxides, and achieve environmental protection effects;

[0041] 2. The ground flare can adopt a variety of different ignition systems and ignition methods, which can more reliably ignite harmful combustible gases;

[0042] 3. The ignition system of the ground flare only ignites the pilot lamp in the first-level combustion system for a long time, which greatly saves the consumption of natural gas and other pilot lamp fuels. In addition, except for the pilot lamp in the first-level combustion system, the other pilot lamps can use the exhaust gas discharged by the chemical plant as the gas source, further saving the fuel consumption of the pilot lamp and greatly reducing the operating costs.

[0043] 4. The burner and ignition system provided by the present invention are suitable for combustion ignition control systems such as multi-point open flares, closed ground flares, high-altitude flare systems and various heating furnaces.

[0044] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0046] Figure 1 A schematic diagram of the main structure of a burner of a multi-point ground flare according to an embodiment of the present invention is shown.

[0047] Figure 2 A schematic top view of the structure of a burner of a multi-point ground flare according to an embodiment of the present invention is shown.

[0048] Figure 3 A schematic structural diagram of a first steady light of a multi-point ground flare according to an embodiment of the present invention is shown.

[0049] Figure 4 A schematic structural diagram of a second steady light of a multi-point ground flare according to an embodiment of the present invention is shown.

[0050] Figure 5 A schematic diagram of the overall structure of a multi-point ground flare using a first pilot lamp for ignition according to an embodiment of the present invention is shown.

[0051] Figure 6 A schematic diagram of the overall structure of a multi-point ground flare using a second pilot lamp for ignition according to an embodiment of the present invention is shown.

[0052] Figure 7 The figure shows the overall structure of a multi-point ground flare using a push rod to move the ignition device for ignition according to one embodiment of the present invention.

[0053] Figure 8 Another schematic top view of the structure of a burner of a multi-point ground flare according to an embodiment of the present invention is shown.

[0054] Description of reference numerals:

[0055] 1. Burner; 2. Exhaust gas source pipeline; 3. Inlet pipe; 4. Classification pipe; 5. Burner connecting pipe; 6. First control valve; 7. Nozzle connecting seat; 8. Branch pipe; 9. Gas nozzle; 10. Flame nozzle; 11. Flame nozzle shell; 12. Flame nozzle inner plate; 13. Pipe hole; 14. First pilot lamp; 15. First gas source pipe; 16. Pilot lamp gas nozzle; 17. Pilot lamp flame nozzle; 18. First ignition electrode; 19. First thermocouple; 20. First deflagration ignition ring pipe; 21. First deflagration flame nozzle; 22. First deflagration gas pipe; 23. Second pilot lamp; 24. Outer tube ignition gas pipe; 25. Inner tube ignition gas pipe; 26. Outer tube high-energy ignition rod; 27. Inner tube high-energy ignition rod; 28. Outer gas nozzle; 29. ​​Inner gas nozzle; 30. Second gas source pipe; 31. Venturi tube; 3 2. Pilot lamp combustion head; 33. Central air inlet; 34. Drain hole; 35. Second deflagration ignition ring tube; 36. Second deflagration gas pipe; 37. Second thermocouple; 38. Second ignition electrode; 39. High-voltage igniter; 40. First-stage second gas source pipe; 41. Second-stage second gas source pipe; 42. Second pressure transmitter; 43. Second control valve; 44. PLC control cabinet; 45. Separation tank; 46. Water Sealing tank; 47. Burner thermocouple; 48. Pilot lamp water sealing tank; 49. Pilot lamp gas storage tank; 50. Push rod moving ignition device; 51. Bracket; 52. Electrode mounting rod; 53. Third ignition electrode; 54. Third thermocouple; 55. Push rod; 56. Propulsion mechanism; 57. Slide; 58. High-energy igniter; 59. First pressure transmitter; 60. Main pipe pressure transmitter; 61. Flame nozzle of deflagration tube. DETAILED DESCRIPTION

[0056] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, 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. Instead, these embodiments are provided to make the present invention more thorough and complete and to fully convey the scope of the present invention to those skilled in the art.

[0057] Example 1:

[0058] The present disclosure provides a multi-point ground flare, comprising:

[0059] A multi-stage combustion system, each stage of which includes a plurality of burners 1, is connected to an exhaust gas source pipeline 2, which can transport combustible gas to the burner 1 for ejection;

[0060] Each stage of the combustion system is provided with an ignition system corresponding thereto, which can ignite the combustible gas ejected from the burner 1;

[0061] The control unit controls each level of ignition system to ignite the corresponding combustion system.

[0062] Specifically, the exhaust gas discharge pipeline 2 is connected to the combustible exhaust gas discharge port of the chemical device, and the combustible exhaust gas enters the combustion system through the exhaust gas source pipeline 2 for combustion. The control unit can control the opening and closing of each level of the combustion system according to the emission of the combustible exhaust gas. The control unit is a PLC control cabinet 44.

[0063] In this embodiment, the exhaust gas source pipeline includes:

[0064] An air inlet pipe 3, one end of which is connected to the exhaust gas source, and the other end of which is connected to a plurality of stepping pipes 4, each of which corresponds to a first-stage combustion system, and each stepping pipe 4 is connected to a plurality of burner connecting pipes 5;

[0065] A first control valve 6 is provided at the front end of each grading pipe 4;

[0066] The first pressure transmitter 59 is provided on one side of the first control valve 6 .

[0067] Optionally, a liquid separation tank 45 and a water seal tank 46 are provided on the air inlet pipe 3 .

[0068] In this embodiment, two main pipe pressure transmitters 60 are provided at the inlet of the exhaust gas source pipeline 2 for detecting the pressure in the pipeline. The main pipe pressure transmitters 60 are electrically connected to the control unit.

[0069] Specifically, the first control valve 6 and the first pressure transmitter 59 are both electrically connected to the control unit. The control unit uploads the pressure value in the exhaust gas source pipeline 2 measured by the main pipe pressure transmitter 60 to the PLC control cabinet 44 to control the opening and closing of the first control valve 6; the first pressure transmitter 59 detects a signal and uploads it to the PLC control cabinet to confirm the pressure state of the stepper 4, thereby controlling the working level of the combustion system and controlling the complete combustion of the combustible exhaust gas to reduce environmental pollution.

[0070] In this embodiment, if Figure 1 、 Figure 2 and Figure 8 As shown, the burner 1 comprises:

[0071] The nozzle connection base 7 is connected to the burner connection pipe 5 at the lower end and is provided with multiple branch pipes 8 at the upper end;

[0072] The gas nozzle 9 is provided on the upper side of the plurality of branch pipes 8;

[0073] The flame nozzle 10 is disposed at the upper end of the gas nozzle 9 and includes a flame nozzle housing 11 . A flame nozzle inner plate 12 is disposed in the flame nozzle housing 11 . A plurality of tube holes 13 are formed in the flame nozzle housing 11 .

[0074] Specifically, the combustible waste gas in the grading pipe 4 enters the branch pipe 8 through the burner connecting pipe 5, and is then ejected into the flame nozzle housing 11 through the gas nozzle 9. The combustible waste gas can be ejected from the flame nozzle 10, and the combustible waste gas ejected from the flame nozzle 10 is ignited by the ignition system.

[0075] In this embodiment, the gas nozzle 9 is arranged on the branch pipe 8, and the upper end of the flame nozzle housing 11 is arranged in a straight cylindrical shape, and the lower end is arranged in a conical shape.

[0076] In this embodiment, the ignition system includes a first pilot lamp 14. The first pilot lamp 14 is provided with at least one in each stage of the combustion system. Figure 3 As shown, the first ever-burning lamp 14 includes:

[0077] A first gas source pipe 15 is connected to a gas source at one end and is provided with a pilot light gas nozzle 16 at the other end. A pilot light flame nozzle 17 is provided at the upper end of the pilot light gas nozzle 16. The pilot light flame nozzle 17 is provided at one side of the upper end of the burner 1;

[0078] The first ignition electrode 18 is arranged inside the pilot lamp flame nozzle 16;

[0079] The first thermocouple 19 is arranged above the pilot lamp flame nozzle 16;

[0080] The first deflagration ignition ring tube 20 is provided at the upper end of the pilot lamp flame nozzle 17 . A first deflagration flame nozzle 21 is provided on the first deflagration ignition ring tube 20 . One side of the first deflagration ignition ring tube 20 is connected to a first deflagration gas pipe 22 .

[0081] In this embodiment, the second stage and the first ever-burning lamps 14 above the second stage use industrially emitted combustible waste gas as the gas source; the first stage second ever-burning lamp 23 uses natural gas or other combustible stable gas sources as the gas source.

[0082] Optionally, the first ever-burning lamp 14 arranged in the first-stage combustion system adopts a stable combustible gas source, and the first ever-burning lamp 14 arranged in the second-stage and above combustion systems adopts the exhaust gas discharged from the exhaust gas source pipeline 2 as the gas source.

[0083] Optionally, deflagration tube flame spray holes 61 are provided around the first deflagration ignition ring tube 20 .

[0084] Specifically, the power supply of the first ignition electrode 18 can be started automatically and / or the power supply of the first deflagration ignition ring tube 20 can be manually started, and the gas source of the first ever-burning lamp 14 can be passed through the first gas source pipe 15 into the ever-burning lamp gas nozzle 16 and sprayed into the ever-burning lamp flame nozzle 17. The first ignition electrode 18 and the first deflagration ignition ring tube 20 can both ignite the gas source entering the ever-burning lamp gas nozzle 16, and then ignite the combustible exhaust gas in the burner through the first ever-burning lamp 14; the first thermocouple 19 can measure the temperature signal at the ever-burning lamp flame nozzle 17 and transmit it to the PLC control cabinet 44. After the PLC control cabinet 44 controls the ignition successfully, it controls the first ignition electrode 18 and the first deflagration ignition ring tube 20 to stop ignition.

[0085] In this embodiment, the first gas source pipe 15 is connected to the burner connecting pipe 5 .

[0086] Specifically, the first ever-burning lamp 14 utilizes the combustible waste gas of the chemical plant as fuel, which can realize the ignition function of the second-level and above combustion systems, saving fuel.

[0087] In this embodiment, the ignition system includes a second pilot lamp 23, and the second pilot lamp 23 is provided with at least one in the first stage combustion system. Figure 4 As shown, the second ever-burning lamp 23 includes:

[0088] An outer ignition gas pipe 24 is nested with an inner ignition gas pipe 25. An outer high-energy ignition rod 26 is provided on the outer ignition gas pipe 24, and an inner high-energy ignition rod 27 is provided on the inner ignition gas pipe 25. An outer gas nozzle 28 is provided at the upper end of the outer ignition gas pipe 24, and an inner gas nozzle 29 is provided at the upper end of the inner ignition gas pipe 25.

[0089] A second gas source pipe 30, one end of which is connected to the gas source, and the other end of which is provided with a venturi tube 31, which is connected to the outer ignition gas pipe 24;

[0090] A pilot burner head 32 is provided at the upper end of the outer ignition gas pipe 24 and has a combustion chamber therein. The lower end of the combustion chamber is connected to the outer ignition gas pipe 24 and the inner ignition gas pipe 25, respectively. A flame outlet is provided at the upper end of the combustion chamber, a central air inlet 33 is provided in the middle of the pilot burner head, and a drainage hole 34 is provided at the lower end of the pilot burner head.

[0091] A second deflagration ignition ring tube 35 is provided at the upper end of the pilot lamp combustion head 32. A second deflagration flame nozzle is provided on the second deflagration ignition ring tube 35. One side of the second deflagration ignition ring tube 35 is connected to a second deflagration gas pipe 36.

[0092] A second thermocouple 37 is provided on one side of the middle air inlet;

[0093] The second ignition electrode 38 is disposed in the combustion chamber.

[0094] In this embodiment, the second pilot lamp 23 of the first stage uses natural gas or other combustible and stable gas sources as the gas source.

[0095] In this embodiment, the combustible waste gas in the first-stage combustion system is ignited by the second pilot lamp 23 .

[0096] Specifically, the lower ends of the outer tube ignition gas pipe 24 and the inner tube ignition gas pipe 25 are connected, and the combustible gas enters the outer tube ignition gas pipe 24 and the inner tube ignition gas pipe 25 through the venturi tube 31, and then is ejected from the inner gas nozzle 29 and the outer gas nozzle 28 into the combustion chamber. The combustion chamber is U-shaped, and a high-energy igniter 58 is used to emit sparks through the inner tube high-energy ignition rod 27 and the outer tube high-energy ignition rod 26 to ignite the gas in the inner tube ignition gas pipe 25 and the outer tube ignition gas pipe 24 and eject it; a high-pressure igniter 39 can be used to control the second ignition electrode 38 to emit sparks to ignite the combustible gas sprayed into the combustion chamber; the second thermocouple 37 transmits the temperature signal to the control unit, and the control unit can stop the ignition of the inner tube high-energy ignition rod 27, the outer tube high-energy ignition rod 26, the second ignition electrode 38 and the second deflagration ignition ring tube 35.

[0097] In this embodiment, the second gas source pipe 30 includes a first-stage second gas source pipe 40 and a second-stage second gas source pipe 41 . Combustible gas is continuously introduced into the first-stage second gas source pipe 40 , and the second-stage second gas source pipe 41 is connected to the air inlet pipe 3 .

[0098] In this embodiment, the second-stage second gas source pipe 41 serves as the gas source pipe for the second-stage and subsequent combustion systems.

[0099] Specifically, the second ever-burning lamp 23 can be used as an ignition device for the first-stage combustion system, and can also be used as an ignition device for the second-stage and above second-stage combustion systems. The first-stage second gas source pipe is used to supply gas to the first-stage ignition system. The combustible gas introduced into the first-stage second gas source pipe 40 can be a stable combustible gas source such as natural gas or liquefied gas. The first-stage second gas source pipe 40 only supplies gas to the first-stage second ever-burning lamp 23 in the first-stage ignition system, so that the first-stage second ever-burning lamp 23 can always maintain a stable combustion state of ignition, so that the first-stage combustion system can be ignited at any time; and the second-stage second gas source pipe 41 is connected to the air inlet pipe 3, and the combustible waste gas discharged by the chemical plant can be used as the gas source for the second-stage second ever-burning lamp 23 in the second-stage ignition system and the second ever-burning lamp 23 with a level greater than the second stage. Using the combustible waste gas discharged by the chemical plant as the gas source for the second-stage and above second ever-burning lamps can effectively save the consumption of fuels such as natural gas or liquefied gas, and save costs.

[0100] In this embodiment, the front end of the first-stage second gas source pipe 40 is provided with a second pressure transmitter 42 and a second control valve 43 in sequence from front to back.

[0101] Specifically, the second pressure transmitter 42 and the second control valve 43 are electrically connected to the control unit. The control unit uploads the data measured by the second pressure transmitter 42 to the PLC control cabinet 44, controls the opening and closing of the second control valve 43, and continuously and stably supplies air to the second ever-burning lamp 23 or stops supplying air.

[0102] In summary, see Figure 5When the multi-point ground flare provided in this embodiment is used, the first-stage second pilot lamp 23 in the first-stage combustion system is first ignited to maintain long-term stable combustion of the first-stage second pilot lamp 23. The fuel is natural gas or other stable combustible gas source. The control unit is a PLC control cabinet 44. The natural gas enters the venturi tube 31 of the second pilot lamp 23 through the first-stage second gas source pipe 40. Before entering the second pilot lamp 23, the natural gas passes through the manual valve, pressure gauge, second pressure transmitter 42, self-operated regulating valve, second control valve 43, pressure gauge and manual valve in sequence. The PLC control cabinet 44 activates the internal and external high-energy igniters 58. Sparks from the inner and outer high-energy ignition rods 27 and 26 ignite the gas in the inner and outer ignition gas pipes 25 and 24, which is then ejected from the inner and outer gas nozzles 29 and 28. Furthermore, the high-voltage igniter is activated, causing the second ignition electrode 38 to emit sparks, which also ignite the natural gas injected into the combustion chamber. If the inner and outer high-energy ignition rods 27, 26, and second ignition electrode 38 all fail to ignite, the second deflagration ignition ring 35 initiates ignition. Flames ejected from the multiple second deflagration flame nozzles within the second deflagration ignition ring 35 ignite the combustible exhaust gas from the flame outlet of the pilot lamp burner 32. A second thermocouple 37 transmits a temperature signal to the PLC control cabinet 44, deactivating the inner and outer high-energy igniters 58 and the high-voltage igniter. The first-stage second pilot lamp 23 remains continuously burning, ready to ignite the combustible exhaust gas emitted from the first-stage grading pipe 4.

[0103] Under production and accident conditions, petrochemical plants will produce different amounts of combustible waste gas emissions. The combustible waste gas enters the air inlet pipe 3 of the multi-point ground flare through a pipeline connection. After the combustible waste gas enters the air inlet pipe 3, a liquid separator 45 and a water seal tank 46 are sequentially provided at the front end of the air inlet pipe 3; the outlet of the water seal tank 46 is connected to the waste gas source pipeline 2, and two main pipe pressure transmitters 60 are provided on the waste gas source pipeline 2. The waste gas source pipeline 2 is then respectively connected to the grading pipes 4 at each level, and the grading pipes 4 at each level are respectively provided with corresponding first control valves 6 for controlling the opening and closing of the grading pipes 4 at each level. After passing through the grading pipe 4, the combustible exhaust gas enters the burner 1 through the burner connecting pipe 5 and is ejected. When the main pipe pressure transmitter 60 detects that the pressure value increases and the pressure reaches the opening pressure, the PLC control cabinet 44 controls the first control valve 6 of the grading pipe 4 at this level to open; the first pressure transmitter 59 can upload the detection signal to the PLC control cabinet 44, and the PLC control cabinet 44 confirms the pressure status in the grading pipe 4; the opening order is to open step by step from the second level to the last level. In this embodiment, when the main pipe pressure transmitter 60 detects that the pressure continues to rise, the PLC control cabinet 44 controls the opening of the combustion system from the second stage to the last stage in sequence; the PLC control cabinet 44 controls the opening of the first control valve 6; the corresponding ignition system used for the opening is the ignition process of the first ever-burning lamp 14; the combustible waste gas enters the first gas source pipe 15 from the burner connecting pipe 5 to supply gas to the first ever-burning lamp 14, and the combustible waste gas enters the ever-burning lamp gas nozzle 16, and then enters the ever-burning lamp flame nozzle 17. A flame nozzle inner plate 12 is provided in the ever-burning lamp flame nozzle 17. The combustible waste gas is ignited by the discharge spark generated by the first ignition electrode 18 through the flame nozzle inner plate 12, and the flame is ejected from the ever-burning lamp flame nozzle 17 and burns; the first thermocouple 19 transmits the temperature signal to the PLC control cabinet 44, and the PLC control cabinet 44 controls the first ignition electrode 18 to be closed. The flame of the first ever-burning lamp 14 ignites the combustible exhaust gas ejected from the burner 1. When the main pipe pressure transmitter 60 detects a pressure drop, the PLC control cabinet 44 issues a command to close the first control valve 6 in sequence from the last stage to the second stage, so that the combustion system of this stage stops burning. The burner thermocouple 47 on the burner of this stage uploads the temperature signal and the detection signal of the first pressure transmitter 59 to the PLC control cabinet 44 as feedback; the exhaust gas source pipeline of the first stage is normally open.

[0104] Example 2:

[0105] The present disclosure provides a multi-point ground flare, comprising:

[0106] A multi-stage combustion system, each stage of which includes a plurality of burners 1, is connected to an exhaust gas source pipeline 2, which can transport combustible gas to the burner 1 for ejection;

[0107] Each stage of the combustion system is provided with an ignition system corresponding thereto, which can ignite the combustible gas ejected from the burner 1;

[0108] The control unit controls each level of ignition system to ignite the corresponding combustion system.

[0109] Specifically, the gas source pipeline 2 is connected to the combustible waste gas discharge port of the chemical device, and the combustible waste gas enters the combustion system through the gas source pipeline 2 for combustion. The control unit can control the opening and closing of each level of the combustion system according to the emission of the combustible waste gas.

[0110] In this embodiment, the exhaust gas source pipeline includes:

[0111] An air inlet pipe 3, one end of which is connected to the exhaust gas source, and the other end of which is connected to a plurality of stepping pipes 4, each of which corresponds to a first-stage combustion system, and each stepping pipe 4 is connected to a plurality of burner connecting pipes 5;

[0112] A first control valve 6 is provided at the front end of each grading pipe 4;

[0113] The first pressure transmitter 59 is provided on one side of the first control valve.

[0114] Optionally, a liquid separation tank 45 and a water seal tank 46 are provided on the air inlet pipe 3 .

[0115] In this embodiment, two main pipe pressure transmitters 60 are provided at the inlet of the exhaust gas source pipeline 2 for detecting the pressure in the pipeline. The main pipe pressure transmitters 60 are electrically connected to the control unit.

[0116] Specifically, the first control valve 6 and the first pressure transmitter 59 are both electrically connected to the control unit. When the control unit detects an increase or decrease in the pressure value in the exhaust gas source pipeline 2 according to the main pipe pressure transmitter 60, it uploads the signal to the PLC control cabinet 44. The PLC control cabinet 44 controls the opening and closing of the first control valve 6, and then controls the working level of the combustion system, so that the combustible exhaust gas can be completely burned and environmental pollution can be reduced.

[0117] In this embodiment, if Figure 1 、 Figure 2 and Figure 8 As shown, the burner 1 comprises:

[0118] The nozzle connection base 7 is connected to the burner connection pipe 5 at the lower end and is provided with multiple branch pipes 8 at the upper end;

[0119] The gas nozzle 9 is provided on the upper side of the plurality of branch pipes 8;

[0120] The flame nozzle 10 is disposed at the upper end of the gas nozzle 9 and includes a flame nozzle housing 11 . A flame nozzle inner plate 12 is disposed in the flame nozzle housing 11 . A plurality of tube holes 13 are formed in the flame nozzle housing 11 .

[0121] Specifically, the combustible waste gas in the grading pipe 4 enters the branch pipe 8 through the burner connecting pipe 5, and is then ejected into the flame nozzle housing 11 through the gas nozzle 9. The combustible waste gas can be burned in the flame nozzle 10, and the combustible waste gas ejected from the flame nozzle 10 can be ignited by the ignition system.

[0122] In this embodiment, the gas nozzle 9 is arranged on the branch pipe 8, and the upper end of the flame nozzle housing 11 is arranged in a straight cylindrical shape, and the lower end is arranged in a conical shape.

[0123] In this embodiment, the ignition system includes a second pilot lamp 23. At least one second pilot lamp 23 is provided in each stage of the combustion system. Figure 4 As shown, the second ever-burning lamp 23 includes:

[0124] An outer ignition gas pipe 24 is nested with an inner ignition gas pipe 25. An outer high-energy ignition rod 26 is provided on the outer ignition gas pipe 24, and an inner high-energy ignition rod 27 is provided on the inner ignition gas pipe 25. An outer gas nozzle 28 is provided at the upper end of the outer ignition gas pipe 24, and an inner gas nozzle 29 is provided at the upper end of the inner ignition gas pipe 25.

[0125] A second gas source pipe 30, one end of which is connected to the gas source, and the other end of which is provided with a venturi tube 31, which is connected to the outer ignition gas pipe 24;

[0126] A pilot burner head 32 is provided at the upper end of the outer ignition gas pipe 24 and has a combustion chamber therein. The lower end of the combustion chamber is connected to the outer ignition gas pipe 24 and the inner ignition gas pipe 25, respectively. A flame outlet is provided at the upper end of the combustion chamber, a central air inlet 33 is provided in the middle of the pilot burner head, and a drainage hole 34 is provided at the lower end of the pilot burner head.

[0127] A second deflagration ignition ring tube 35 is provided at the upper end of the pilot lamp combustion head 32. A second deflagration flame nozzle is provided on the second deflagration ignition ring tube 35. One side of the second deflagration ignition ring tube 35 is connected to a second deflagration gas pipe 36.

[0128] A second thermocouple 37 is provided on one side of the middle air inlet;

[0129] The second ignition electrode 38 is disposed in the combustion chamber.

[0130] In this embodiment, the second pilot lamp 23 of the first stage uses natural gas or other combustible and stable gas sources as the gas source.

[0131] Specifically, the lower ends of the outer tube ignition gas pipe 24 and the inner tube ignition gas pipe 25 are connected, and the combustible gas enters the outer tube ignition gas pipe 24 and the inner tube ignition gas pipe 25 through the venturi tube 31, and then is ejected from the inner gas nozzle 29 and the outer gas nozzle 28 into the combustion chamber. The combustion chamber can be conical, and a high-energy igniter 58 is used to emit sparks through the inner tube high-energy ignition rod 27 and the outer tube high-energy ignition rod 26 to ignite the gas in the inner tube ignition gas pipe 25 and the outer tube ignition gas pipe 24 and eject it; a high-pressure igniter 39 can be used to control the second ignition electrode 38 to emit sparks to ignite the combustible gas sprayed into the combustion chamber; the second thermocouple 37 transmits the temperature signal to the control unit, and the control unit can stop the ignition of the inner tube high-energy ignition rod 27, the outer tube high-energy ignition rod 26, the second ignition electrode 38 and the second deflagration ignition ring tube 35.

[0132] In this embodiment, the second gas source pipe 30 includes a first-stage second gas source pipe 40 and a second-stage second gas source pipe 41 . Combustible gas is continuously introduced into the first-stage second gas source pipe 40 , and the second-stage second gas source pipe 41 is connected to the air inlet pipe 3 .

[0133] In this embodiment, the second-stage second gas source pipe 41 serves as the gas source pipe for the second-stage and subsequent combustion systems.

[0134] Specifically, the second ever-burning lamp 23 can be used as an ignition device for the first-stage combustion system, and can also be used as an ignition device for the second-stage and above-second-stage combustion systems. The combustible gas introduced into the first-stage second gas source pipe 40 can be a stable combustible gas source such as natural gas or liquefied gas. The first-stage second gas source pipe 40 only supplies gas to the first-stage second ever-burning lamp 23 in the first-stage combustion system, so that the first-stage second ever-burning lamp 23 can always remain in a ignited state so that the first-stage combustion system can be ignited at any time; and the second-stage second gas source pipe 41 is connected to the air inlet pipe 3, and the combustible waste gas discharged by the chemical plant can be used as the gas source for the second-stage second ever-burning lamp 23 in the second-stage combustion system and the second ever-burning lamp 23 with a level greater than the second stage. Using the combustible waste gas discharged by the chemical plant as the gas source for the second-stage and above-second ever-burning lamps can effectively save the consumption of fuels such as natural gas or liquefied gas, and save costs.

[0135] In this embodiment, the front end of the first-stage second gas source pipe 40 is provided with a second pressure transmitter 42 and a second control valve 43 in sequence from front to back.

[0136] Specifically, the second pressure transmitter 42 and the second control valve 43 are electrically connected to the control unit. The control unit automatically or manually controls the opening and closing of the second control valve 43 based on the stability of the gas source in the first-level second gas source pipe 40 measured by the second pressure transmitter 42, and starts the power supply of the high-voltage igniter 39 and the high-energy igniter 58. The second ignition electrode 38, the outer high-energy ignition rod 26, and the inner tube high-energy ignition rod 27 simultaneously emit sparks to ignite the ever-burning lamp. The second thermocouple 37 detects the temperature and uploads it to the PLC control cabinet 44, which controls the ignition to stop and turn off the power supply of the high-energy igniter 58 and the high-voltage electric igniter 39. The first-level ever-burning lamp remains normal. When the second thermocouple 37 detects that the temperature of the ever-burning lamp 23 has dropped, it will automatically start the above-mentioned ignition process, ignite the second ever-burning lamp 23, and maintain stable combustion.

[0137] In summary, see Figure 6 When the multi-point ground torch provided in this embodiment is used, the second ever-burning lamp 23 of the first stage in the first-stage combustion system is first ignited to maintain long-term stable combustion of the second ever-burning lamp 23 of the first stage. The gas source of the corresponding second ever-burning lamp 23 in the second-stage and above combustion systems is connected to the ever-burning lamp gas tank 49, and a pressure transmitter is installed on the ever-burning lamp gas tank 49. When the pressure rises, the ignition program is automatically started. The ignition process is the same as the first stage.

[0138] Petrochemical plants generate varying amounts of flammable waste gas during production and during accidents. This waste gas is piped into the ground flare's intake pipe 3. After the waste gas enters the intake pipe 3, a separator tank 45 and a water seal tank 46 are sequentially installed at the front end of the pipe. The outlet of the water seal tank 46 is connected to each stage of the grading pipe 4. In this embodiment, the ignition system used, from the second to the final stage of the combustion system, is the second pilot lamp 23. The second-stage second gas source pipe 41 is connected to the outlet of the separator tank 45. The second pilot lamps 23 from the second to the final stage are supplied with flammable waste gas. Between the liquid separator and the second-stage second gas source pipe 41, a pilot light water seal tank 48, a pilot light gas storage tank 49, a manual valve, a pressure gauge, a pressure transmitter, a regulating valve, a self-operated regulating valve, a pressure gauge, a flow meter, a solenoid valve, and a manual valve are sequentially installed. Combustible waste gas enters the Venturi tubes 31 of the second pilot lights 23 of each stage through the second-stage second gas source pipe 41, supplying gas to the second pilot lights 23 of each stage. Corresponding first control valves 6 are installed on the stepping pipes 4 to control the opening and closing of the second and subsequent stepping pipes 4. After passing through the stepping pipes 4, the combustible waste gas enters the burner 1 through the burner connecting pipe 5 for discharge. Two main pressure transmitters 60 installed on the waste gas source pipe 2 monitor the pressure within the pipe and transmit the pressure value to the PLC control cabinet 44. When the pressure reaches the opening pressure, the PLC control cabinet 44 controls the opening of the first control valves 6 of the stepping pipes 4, opening them step by step from the second stage to the last stage. The burner thermocouple 47 on the burner 1 at this stage transmits the temperature signal and the pressure signal from the pressure transmitter 59 to the PLC control cabinet 44 as feedback. The ignition process of the combustible exhaust gas after entering the second pilot lamp 23 is the same as the ignition process of the second pilot lamp 23 in Example 1. When the pressure of the main pipe pressure transmitter 60 decreases, the PCL control cabinet 44 controls the first control valve 6 on the stepping pipe 4 to close, causing the combustion system at this stage to cease combustion. The burner thermocouple 47 on the burner 1 at this stage transmits the temperature signal and the pressure signal from the first pressure transmitter 59 to the PLC control cabinet 44 as feedback. The first control valve 6 on each stage of the stepping pipe 4 is closed in sequence, from the last stage to the second stage, with the exhaust gas source pipeline of the first stage being normally open.

[0139] Example 3:

[0140] The present disclosure provides a multi-point ground flare, comprising:

[0141] A multi-stage combustion system, each stage of which includes a plurality of burners 1, is connected to an exhaust gas source pipeline 2, which can transport combustible gas to the burner 1 for ejection;

[0142] Each stage of the combustion system is provided with an ignition system corresponding thereto, which can ignite the combustible gas ejected from the burner 1;

[0143] The control unit controls each level of ignition system to ignite the corresponding combustion system.

[0144] Specifically, the gas source pipeline 2 is connected to the combustible waste gas discharge port of the chemical device, and the combustible waste gas enters the combustion system through the gas source pipeline 2 for combustion. The control unit can control the opening and closing of each level of the combustion system according to the emission of the combustible waste gas.

[0145] In this embodiment, the exhaust gas source pipeline includes:

[0146] An air inlet pipe 3, one end of which is connected to the exhaust gas source, and the other end of which is connected to a plurality of stepping pipes 4, each of which corresponds to a first-stage combustion system, and each stepping pipe 4 is connected to a plurality of burner connecting pipes 5;

[0147] A first control valve 6 is provided at the front end of each grading pipe 4;

[0148] The first pressure transmitter 59 is provided on one side of the first control valve.

[0149] Optionally, a liquid separation tank 45 and a water seal tank 46 are provided on the air inlet pipe 3 .

[0150] In this embodiment, two main pipe pressure transmitters 60 are provided at the inlet of the exhaust gas source pipeline 2 for detecting the pressure in the pipeline. The main pipe pressure transmitters 60 are electrically connected to the control unit.

[0151] Specifically, the first control valve 6 and the first pressure transmitter 59 are both electrically connected to the control unit. The control unit transmits a signal to the PLC control cabinet 44 based on the pressure value in the exhaust gas source pipeline 2 measured by the main pipe pressure transmitter 60. The PLC control cabinet 44 controls the opening and closing of the first control valve 6; the first pressure transmitter 59 uploads the detection signal to the PLC control cabinet to confirm the pressure state of the stepper 4; and then controls the working level of the combustion system, controls the combustible exhaust gas to be completely burned, saves fuel, and reduces environmental pollution.

[0152] In this embodiment, if Figure 1 、 Figure 2 and Figure 8 As shown, the burner 1 comprises:

[0153] The nozzle connection base 7 is connected to the burner connection pipe 5 at the lower end and is provided with multiple branch pipes 8 at the upper end;

[0154] The gas nozzle 9 is provided on the upper side of the plurality of branch pipes 8;

[0155] The flame nozzle 10 is disposed at the upper end of the gas nozzle 9 and includes a flame nozzle housing 11 . A flame nozzle inner plate 12 is disposed in the flame nozzle housing 11 . A plurality of tube holes 13 are formed in the flame nozzle housing 11 .

[0156] Specifically, the combustible waste gas in the grading pipe 4 enters the branch pipe 8 through the burner connecting pipe 5, and is then ejected into the flame nozzle housing 11 through the gas nozzle 9. The combustible waste gas can be burned in the flame nozzle 10, and the combustible waste gas in the flame nozzle 10 can be ignited by the ignition system.

[0157] In this embodiment, the gas nozzle 9 is arranged on the branch pipe 8, and the upper end of the flame nozzle housing 11 is arranged in a straight cylindrical shape, and the lower end is arranged in a conical shape.

[0158] In this embodiment, the ignition system includes a second pilot lamp 23. At least one second pilot lamp 23 is provided in each stage of the combustion system. Figure 4 As shown, the second ever-burning lamp 23 includes:

[0159] An outer ignition gas pipe 24 is nested with an inner ignition gas pipe 25. An outer high-energy ignition rod 26 is provided on the outer ignition gas pipe 24, and an inner high-energy ignition rod 27 is provided on the inner ignition gas pipe 25. An outer gas nozzle 28 is provided at the upper end of the outer ignition gas pipe 24, and an inner gas nozzle 29 is provided at the upper end of the inner ignition gas pipe 25.

[0160] A second gas source pipe 30, one end of which is connected to the gas source, and the other end of which is provided with a venturi tube 31, which is connected to the outer ignition gas pipe 24;

[0161] A pilot burner head 32 is provided at the upper end of the outer ignition gas pipe 24 and has a combustion chamber therein. The lower end of the combustion chamber is connected to the outer ignition gas pipe 24 and the inner ignition gas pipe 25, respectively. A flame outlet is provided at the upper end of the combustion chamber, a central air inlet 33 is provided in the middle of the pilot burner head, and a drainage hole 34 is provided at the lower end of the pilot burner head.

[0162] A second deflagration ignition ring tube 35 is provided at the upper end of the pilot lamp combustion head 32. A second deflagration flame nozzle is provided on the second deflagration ignition ring tube 35. One side of the second deflagration ignition ring tube 35 is connected to a second deflagration gas pipe 36.

[0163] A second thermocouple 37 is provided on one side of the middle air inlet;

[0164] The second ignition electrode 38 is disposed in the combustion chamber.

[0165] In this embodiment, the second pilot lamp 23 of the first stage uses natural gas or other combustible and stable gas sources as the gas source.

[0166] Specifically, the lower ends of the outer tube ignition gas pipe 24 and the inner tube ignition gas pipe 25 are connected, and the combustible gas enters the outer tube ignition gas pipe 24 and the inner tube ignition gas pipe 25 through the venturi tube 31, and then is ejected from the inner gas nozzle 29 and the outer gas nozzle 28 into the combustion chamber. The combustion chamber can be conical, and a high-energy igniter 58 is used to emit sparks through the inner tube high-energy ignition rod 27 and the outer tube high-energy ignition rod 26 to ignite the gas in the inner tube ignition gas pipe 25 and the outer tube ignition gas pipe 24 and eject it; a high-pressure igniter 39 can be used to control the second ignition electrode 38 to emit sparks to ignite the combustible gas sprayed into the combustion chamber; the second thermocouple 37 transmits the temperature signal to the control unit, and the control unit can stop the ignition of the inner tube high-energy ignition rod 27, the outer tube high-energy ignition rod 26, the second ignition electrode 38 and the second deflagration ignition ring tube 35.

[0167] In this embodiment, the second gas source pipe 30 includes a first-stage second gas source pipe 40 and a second-stage second gas source pipe 41 . Combustible gas is continuously introduced into the first-stage second gas source pipe 40 , and the second-stage second gas source pipe 41 is connected to the air inlet pipe 3 .

[0168] In this embodiment, the second-stage second gas source pipe 41 serves as the gas source pipe for the second-stage and subsequent combustion systems.

[0169] Specifically, the second ever-burning lamp 23 can be used as an ignition device for the first-stage combustion system, and can also be used as an ignition device for the second-stage and above combustion systems. The combustible gas introduced into the first-stage second gas source pipe 40 can be a stable combustible gas source such as natural gas or liquefied gas, which serves as the ignition gas source for the ever-burning lamp of the first-stage ignition system; the first-stage second gas source pipe 40 only supplies gas to the first-stage second ever-burning lamp 23 of the first-stage ignition system, so that the first-stage second ever-burning lamp 23 can always remain in a ignited state, so that the first-stage combustion system can be ignited at any time.

[0170] In this embodiment, the ignition system includes a push rod moving ignition device 50. At least one push rod moving ignition device 50 is provided in the second stage and the second and higher stage combustion systems. The push rod moving ignition device 50 includes:

[0171] The bracket 51 is arranged on one side of the middle portion of the classification tube 4;

[0172] The electrode mounting rod 52 is rotatably connected to the bracket 51;

[0173] The third ignition electrode 53 is provided at the upper end of the electrode mounting rod 52 and is capable of igniting the burner 1;

[0174] The third thermocouple 54 is provided at the upper end of the burner 1;

[0175] A push rod 55 is hinged to the lower end of the electrode mounting rod 52;

[0176] The propulsion mechanism 56 is provided at one end of the push rod 55 and can push the push rod 55 to move.

[0177] Specifically, a slide 57 is provided on the upper side of the bracket 51, and the electrode mounting rod 52 slides with the slide 57, and the slide 57 provides a guide for the electrode mounting rod 52. The propulsion mechanism 56 can be a pneumatic push rod or an electric telescopic rod. The propulsion mechanism 56 pushes the push rod 55 to move, driving the lower end of the electrode mounting rod 52 to move so that the electrode mounting rod 52 rotates around the hinge point between it and the bracket 51, so that the third ignition electrode 53 installed at the upper end of the electrode mounting rod 52 can approach and move away from the upper end of the burner 1. When the third ignition electrode 53 is needed to ignite, the push rod 55 is pushed in the direction away from the burner 1 so that the third ignition electrode 53 is close to the upper end of the burner 1, and the exhaust gas ejected from the burner 1 can be ignited; the temperature signal detected by the thermocouple is uploaded to the PLC control cabinet 44. When the ignition is completed, the push rod 55 is pushed in the direction close to the burner 1 so that the third ignition electrode 53 is away from the upper end of the burner 1.

[0178] In this embodiment, the front end of the first-stage second gas source pipe 40 is provided with a second pressure transmitter 42 and a second control valve 43 in sequence from front to back.

[0179] Specifically, the second pressure transmitter 42 and the second control valve 43 are electrically connected to the control unit. The control unit uploads the signal of the stability of the gas source in the first-level second gas source pipe 40 measured by the second pressure transmitter 42 to the PCL control cabinet 44. The PCL control cabinet 44 issues an instruction to control the opening of the second control valve 43, starting the power supply of the high-voltage igniter 39 and the high-energy igniter 58. The second ignition electrode 38, the outer high-energy ignition rod 26, and the inner tube high-energy ignition rod 27 simultaneously emit sparks to ignite the ever-burning lamp. The second thermocouple 37 detects the temperature and uploads it to the PLC control cabinet 44, which controls the ignition to stop and turn off the power supply of the high-energy igniter 58 and the high-voltage electric igniter 39. The first-level ever-burning lamp remains normal. When the second thermocouple 37 detects that the temperature of the ever-burning lamp 23 drops, it will automatically start the above-mentioned ignition process, ignite the second ever-burning lamp 23, and maintain stable combustion.

[0180] In summary, see Figure 7 When the multi-point ground torch provided in this embodiment is used, the second ever-burning lamp 23 of the first stage in the first-stage combustion system is first ignited to maintain long-term stable combustion of the second ever-burning lamp 23 of the first stage. The gas supply and ignition principles are the same as those in the first embodiment.

[0181] Under production and accident conditions, petrochemical plants will produce different amounts of combustible waste gas emissions. The combustible waste gas is transported into the air inlet pipe 3 of the ground flare through a pipeline connection. After the combustible waste gas enters the air inlet pipe 3, a liquid separator 45 and a water seal tank 46 are sequentially provided at the front end of the air inlet pipe 3; the outlet of the water seal tank 46 is respectively connected to the stepping pipe 4 at each level; the first control valve 6 and the main pipe pressure transmitter 60 are electrically connected to the control unit. When the control unit measures the pressure value in the waste gas source pipeline 2 according to the main pipe pressure transmitter 60, the signal is uploaded to the PLC control cabinet 44, and the PLC control cabinet 44 controls the opening and closing of the first control valve 6; the first pressure transmitter 59 detects the signal and uploads it to the PLC control cabinet to confirm the pressure state in the stepping pipe 4; and then controls the number of working stages of the multi-stage combustion system, opening step by step from the second stage to the last stage. In this embodiment, from the second-stage combustion system to the last-stage combustion system, the ignition system used is a push rod moving ignition device 50. When the main pipe pressure transmitter 60 on the exhaust gas source pipeline 2 detects a pressure increase, before the first control valve 6 corresponding to the second-stage combustion system is opened, the PLC control cabinet 44 controls the push rod moving ignition device 50 to ignite the combustible exhaust gas ejected from the burner 1 of this stage. The PLC control cabinet 44 controls the propulsion mechanism 56 to push the push rod 55, so that the push rod 55 and the lower end of the electrode mounting rod 52 move away from the burner 1, so that the third ignition electrode 53 at the upper end of the electrode mounting rod 52 is close to the upper end of the burner 1, and then the third ignition electrode 53 is caused to generate an electric spark through the high-voltage igniter to ignite the combustible exhaust gas ejected from the burner 1. The third thermocouple 54 transmits a temperature signal to the PLC control cabinet 44 for confirmation. The PLC control cabinet 44 then shuts down the high-voltage igniter and controls the propulsion mechanism 56 to pull the push rod 55, causing the push rod 55 and the lower end of the electrode mounting rod 52 to move toward the burner 1. This moves the third ignition electrode 53 at the upper end of the electrode mounting rod 52 away from the upper end of the burner 1, deactivating the third ignition electrode 53. The combustion system then opens sequentially from the second stage to the last stage. When the main pressure transmitter 60 detects a pressure drop, the PCL control cabinet 44 closes the first control valve 6 on the stepper 3, halting combustion in that stage. The first pressure transmitter 59 transmits the detected pressure to the PLC control cabinet 44 to confirm the pressure status within the stepper 4. The burner thermocouple 47 on the burner 1 at that stage transmits a temperature signal to the PLC control cabinet 44 as feedback. The first control valve 6 on each stage of the stepper 4 closes sequentially, from the last stage to the first.

[0182] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A multi-point ground flare, characterized in that: include: A multi-stage combustion system, each stage of which includes a plurality of burners, and the multi-stage combustion system is connected to an exhaust gas source pipeline, which can transport combustible gas to the burner for spraying; Each level of the combustion system is provided with an ignition system corresponding thereto, and the ignition system can ignite the combustible gas ejected from the burner; A control unit, controlling the ignition system at each level to ignite the corresponding combustion system; The exhaust gas source pipeline comprises: An air inlet pipe, one end of which is connected to the exhaust gas source, and the other end of which is connected to a plurality of stepping pipes, each of which corresponds to a level of the combustion system, and each of which is connected to a plurality of burner connecting pipes; A first control valve is arranged at the front end of each of the grading pipes; A first pressure transmitter is arranged on one side of the first control valve; The ignition system includes a second ever-burning lamp, at least one of which is provided in each stage of the combustion system, and the second ever-burning lamp includes: An outer tube ignition gas pipe is nested inside an inner tube ignition gas pipe, an outer tube high-energy ignition rod is arranged on the outer tube ignition gas pipe, an inner tube high-energy ignition rod is arranged on the inner tube ignition gas pipe, an outer gas nozzle is arranged at the upper end of the outer tube ignition gas pipe, and an inner gas nozzle is arranged at the upper end of the inner tube ignition gas pipe; A second gas source pipe, one end of which is connected to a gas source, and the other end of which is provided with a venturi tube, wherein the venturi tube is connected to the outer tube ignition gas pipe; A pilot light burner head is arranged at the upper end of the outer tube ignition gas pipe, and a combustion chamber is arranged inside. The lower end of the combustion chamber is connected to the outer tube ignition gas pipe and the inner tube ignition gas pipe respectively. A flame outlet is opened at the upper end of the combustion chamber, a middle air inlet hole is opened in the middle of the pilot light burner head, and a drainage hole is arranged at the lower end of the pilot light burner head; A second deflagration ignition ring tube is arranged at the upper end of the pilot lamp combustion head, a second deflagration flame nozzle is arranged on the second deflagration ignition ring tube, and a second deflagration gas pipe is connected to one side of the second deflagration ignition ring tube; A second thermocouple is disposed on one side of the middle air inlet; A second ignition electrode is disposed in the combustion chamber; The second gas source pipe comprises a first-level second gas source pipe and a second-level second gas source pipe, the first-level second gas source pipe continuously flows with stable combustible gas, and the second-level second gas source pipe is connected to the air inlet pipe; The second-stage second gas source pipe serves as the gas source pipe for the second-stage and above combustion systems; The first-stage second gas source pipe is used to supply gas to the first-stage ignition system. The first-stage second gas source pipe introduces stable combustible gas, which is natural gas or liquefied gas.

2. The multi-point ground flare according to claim 1, characterized in that: The burner comprises: A nozzle connection seat, the lower end of which is connected to the burner connection pipe, and the upper end of which is provided with a plurality of branch pipes; A gas nozzle is arranged on the upper side of the plurality of branch pipes; The flame nozzle is arranged at the upper end of the gas nozzle and comprises a flame nozzle shell. A flame nozzle inner plate is arranged in the flame nozzle shell. A plurality of tube holes are opened on the flame nozzle shell.

3. The multi-point ground flare according to claim 2, characterized in that: The gas nozzle is arranged on the branch pipe, the upper end of the flame nozzle shell is arranged in a straight cylinder shape, and the lower end is arranged in a conical or straight cylinder shape.

4. The multi-point ground flare according to claim 1, characterized in that: The ignition system includes a first ever-burning lamp, at least one of which is provided in each stage of the combustion system, and the first ever-burning lamp includes: A first gas source pipe, one end of which is connected to a gas source, and the other end of which is provided with a pilot light gas nozzle, and the upper end of the pilot light gas nozzle is provided with a pilot light flame nozzle, and the pilot light flame nozzle is provided on one side of the upper end of the burner; A first ignition electrode is arranged inside the flame nozzle of the pilot lamp; A first thermocouple is arranged above the flame nozzle of the pilot lamp; The first deflagration ignition ring tube is arranged at the upper end of the flame nozzle of the ever-burning lamp. The first deflagration ignition ring tube is provided with a first deflagration flame nozzle. One side of the first deflagration ignition ring tube is connected with a first deflagration gas pipe.

5. The multi-point ground flare according to claim 4, characterized in that: The first gas source pipe is communicated with the burner connecting pipe.

6. The multi-point ground flare according to claim 1, characterized in that: The ignition system includes a push rod moving ignition device, at least one of which is provided in the second stage and above the second stage of the combustion system, and the push rod moving ignition device includes: A bracket is arranged on one side of the middle part of the grading tube; An electrode mounting rod, rotatably connected to the bracket; a third ignition electrode, disposed at the upper end of the electrode mounting rod, capable of igniting the burner; a third thermocouple, disposed at the upper end of the burner; A push rod, hinged to the lower end of the electrode mounting rod; The propulsion mechanism is arranged at one end of the push rod and can push the push rod to move.

7. The multi-point ground flare according to claim 1, characterized in that: The front end of the first-stage second gas source pipe is provided with a second pressure transmitter and a second control valve in sequence from front to back.

Images