Torch system and method for extinguishing torch incandescent light

Abstract

According to the torch system and method for extinguishing the torch incandescent light, long-time combustion of the incandescent light is replaced by continuous high temperature of an electric heating wire, and the combustion effect of air can be guaranteed under the condition that the incandescent light is extinguished and gas consumption is reduced. The temperature sensor is arranged at the position of the electric heating wire, the temperature sensor can transmit temperature signals of the electric heating wire to the controller, the controller adjusts the current of the electric heating water according to temperature feedback, the temperature of the electric heating wire is kept at a certain temperature, combustion of the air can be guaranteed, and low power consumption can be maintained. And meanwhile, a combined structure composed of multiple fins is used for reducing the diameter of the torch head without an emptying task, the anti-backfire function of the molecular seal can be achieved, and the gas consumption of the molecular seal can be effectively reduced. Therefore, the device can meet the requirement on the discharge amount of the torch, solves the difficult problems that the torch cannot be extinguished and the ever-burning lamp burns for a long time under the condition of internal leakage of the high-pressure emptying pipeline valve, and meanwhile, the natural gas is utilized to supplement the molecular seal fuel gas.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of energy saving of flare system in petroleum and chemical industry, and relates to a flare system and method for extinguishing flare pilot light. BACKGROUND

[0002] The flare is one of the key equipment indispensable in the oil and gas processing station. The flare system is mainly used for safely processing the hydrocarbon gas and other harmful gas that cannot be recycled or reused in the oil and gas processing process. These gases can include impurities in natural gas, waste gas generated in the process, and gas that must be discharged to ensure the safety of equipment and process.

[0003] The role of the pilot light in the flare is to ensure that the vented natural gas is ignited in the case of emergency venting, so as to avoid the explosion of unignited natural gas mixed with air. The molecular seal in the flare mainly prevents backfire and explosion of the flare, and is usually installed between the flare head and the whole body of the flare. Its function is realized by injecting a certain amount of sealing gas (such as nitrogen or station reverse natural gas) with a smaller molecular weight than air.

[0004] Nowadays, more and more attention is paid to the management of VOCs, and each oil and gas processing station is committed to achieving the function of "flare extinguishing when there is no venting gas, and flare automatic ignition when there is venting gas". At present, the technology of flare venting monitoring and automatic ignition is relatively mature. The flare can be automatically ignited when a large amount of venting gas enters the flare by increasing the alarm ignition of the venting gas flow meter, the flow switch ignition, the venting pressure switch ignition, etc. However, in fact, it is difficult to continuously maintain the absolute sealing of the venting pipeline valve under high pressure conditions. The venting valve leaks, the venting system continuously discharges natural gas, and the amount of this leaked natural gas is relatively small. After the pilot light is extinguished, this part of the leaked natural gas cannot maintain continuous combustion, causing pollution to the atmospheric environment. Therefore, how to ensure the combustion of venting gas and achieve the extinguishing of the pilot light in the case of long-time existence of small amount of venting gas discharge in the venting system is a big problem existing at present. SUMMARY

[0005] The present application aims to solve the problems in the prior art and provide a flare system and method for extinguishing flare pilot light.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: The present application provides a flare system for extinguishing flare pilot light, which comprises a controller, a molecular seal and a flare nozzle. The torch nozzle is installed above the torch head, a wind shield is arranged outside the torch nozzle, and an electric heating wire is arranged above the wind shield; a temperature sensor is arranged on the electric heating wire, the temperature sensor is connected with an input end of the controller, and the electric heating wire is connected with an output end of the controller.

[0007] Preferably, an angular displacement sensor is arranged on the torch nozzle, and a gas volume adjusting device is arranged on the molecular seal inlet pipeline, the angular displacement sensor is connected with an input end of the controller, and the gas volume adjusting device is connected with an output end of the controller.

[0008] Preferably, the height of the wind shield is greater than the height of the torch nozzle in a vertical state.

[0009] Preferably, the torch nozzle is composed of a plurality of fin structures.

[0010] Preferably, the fin structure is triangular, a connecting plate is arranged on the fin structure, and a plurality of fin structures are combined into a closed loop structure through the connecting plate.

[0011] Preferably, the wind shield is composed of a plurality of baffles spliced into a columnar structure, and the fin structure is arranged in one-to-one correspondence with the baffle.

[0012] Preferably, a protruding structure is arranged at the center of the baffle.

[0013] Preferably, a through hole is arranged on each baffle.

[0014] Preferably, a long-lasting lamp is arranged at the discharge port of the torch system.

[0015] The present application provides a method for extinguishing a long-lasting lamp of a torch system. The torch nozzle is installed above the torch head, a wind shield is arranged outside the torch nozzle, and an electric heating wire is arranged above the wind shield; when the torch system is normally operated, the temperature sensor monitors the temperature of the electric heating wire in real time, transmits a temperature signal to the controller, and if the temperature is lower than an expected value, the controller controls the electric heating wire to perform heating operation; if the temperature is higher than the expected value, the controller controls the electric heating wire to stop heating operation.

[0016] Compared with the prior art, the present application has the following beneficial effects: The torch system for extinguishing the long-lasting torch lamp provided by the application can replace the long-lasting combustion of the long-lasting lamp with the sustained high temperature of the temperature-adjustable electric heating wire, so that the long-lasting lamp can be extinguished and the combustion effect of the venting air can be ensured under the condition of reducing the gas consumption. The temperature sensor is arranged at the electric heating wire, the temperature sensor can transmit the temperature signal of the electric heating wire to the controller, the controller can adjust the electric current of the electric heating wire according to the temperature feedback, so that the temperature of the electric heating wire can be kept at 900 DEG C, at which the combustion of the venting air can be ensured and the power consumption can be kept low. Meanwhile, the combined structure composed of multiple fins is used to reduce the diameter of the torch head under the condition of no venting task, so that the anti-backfire function of the molecular seal can be realized and the gas consumption of the molecular seal can be effectively reduced. Therefore, when a large amount of venting air enters the torch, the device can meet the requirement of the torch venting amount, solve the difficult problem that the torch cannot be extinguished and the long-lasting lamp cannot be burned out under the condition of the internal leakage of the valve of the high-pressure venting pipeline, and supplement the gas consumption of the molecular seal by using the part of the natural gas. The purpose of energy saving and consumption reduction is realized, the carbon emission amount is reduced, and the device has a positive significance for environmental protection.

[0017] Further, the polygonal fin group surrounded by the multiple fin structures is used to reduce the diameter of the torch head, the fin group can rotate around the shaft arranged at the outer edge and has a certain counterweight, and the fin group can be opened upward at an angle of 30 DEG with the horizontal plane when the gas flow rate is 0.03-0.06 m / s. The diameter-reduced torch head can ensure the anti-backfire function and greatly reduce the gas consumption of the molecular seal. The gas amount adjusting device is a molecular seal gas amount adjusting valve and is arranged on the molecular seal gas inlet pipeline and used to adjust and control the gas amount of the molecular seal.

[0018] Further, the angular displacement sensor is arranged on the fin structure, the angular displacement sensor can transmit the opening angle signal of the fin to the controller, the controller can adjust the opening degree of the molecular seal gas amount adjusting valve according to the opening angle of the fin, so as to control the gas amount of the molecular seal and finally control the opening angle of the variable-diameter torch head fin to be equal to 30 DEG.

[0019] Further, the fin structure is designed in a triangular shape, the center line is taken as a boundary, the left side is a normal shape, and the right side is slightly inclined inward, a rectangular baffle is welded at the center of the fin, the baffle is located below the next fin on the right side, and the cycle is repeated, finally, the multiple fins form a stable closed loop structure, so that the fin group can be arranged in the same way from top to bottom. When the venting air deviates to one side of the pipeline, the force acting on each fin is not uniform, which causes the detection data of the angular displacement detector to be inaccurate and the action of the adjusting valve to be unstable.

[0020] Furthermore, the windbreak is composed of several baffles assembled into a columnar structure, with each fin structure corresponding to one baffle. The height of the baffle is slightly higher than the height of the fin in its vertical state. A local protrusion is provided at the center of the baffle to prevent the fins from being blown more than 90° during high-flow-rate air release, requiring manual repositioning. When the airflow decreases, it ensures that the fins can return to their original shape under their own gravity. At the same time, the perforated baffle also replenishes the internal environment with sufficient air, which is beneficial for complete combustion of the sealed gas.

[0021] Furthermore, the traditional torch retains its ever-burning lamp and high-altitude high-energy automatic ignition equipment components to preserve more operational conditions and emergency measures in case of emergencies. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural diagram of the torch system for extinguishing the torch lamp of the present invention.

[0024] Among them: 1-Heating wire; 2-Windproof plate; 3-Torque nozzle; 4-Temperature sensor; 5-Angular displacement sensor; 6-Controller; 7-Molecular seal air inlet pipeline; 8-Gas volume regulating device; 9-Continuous light; 10-Control circuit. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0031] The present invention will now be described in further detail with reference to the accompanying drawings: This invention proposes a torch system for extinguishing a torch lamp that keeps it burning continuously, such as... Figure 1 As shown, the system includes a controller 6, a molecular seal, and a torch nozzle 3. The torch nozzle 3 is mounted above the torch head, and a windproof plate 2 is provided on the outside of the torch nozzle 3. A heating wire 1 is provided above the windproof plate 2. A temperature sensor 4 is provided on the heating wire 1, and the temperature sensor 4 is connected to the input terminal of the controller 6. The heating wire 1 is connected to the output terminal of the controller 6. Both the temperature sensor 4 and the heating wire 1 are connected to the controller 6 via a control circuit 10.

[0032] An angular displacement sensor 5 is provided on the torch nozzle 3, and a gas volume regulating device 8 is provided on the gas inlet line 7 of the molecular seal. The angular displacement sensor 5 is connected to the input terminal of the controller 6, and the gas volume regulating device 8 is connected to the output terminal of the controller 6.

[0033] The height of the wind deflector 2 is greater than the height of the torch nozzle 3 in its vertical position. The torch nozzle 3 consists of several finned structures. The finned structures are triangular in shape, and connecting plates are installed on the finned structures to form a closed loop structure. The wind deflector 2 is a columnar structure assembled from several baffles, with each finned structure corresponding to one of the baffles. A protruding structure is provided at the center of each baffle. A through hole is provided on each baffle. A continuous light 9 is provided at the emission port of the torch system.

[0034] The system will be described below in conjunction with its effects: The molecular seal gas supply must ensure that the gas flow rate at the flare head of the flare system is 0.03~0.06 m / s. A polygonal fin assembly composed of multiple fins is used to reduce the diameter of the flare head. This fin assembly can rotate around an axis located on its outer edge and has a certain counterweight. When the gas flow rate is 0.03~0.06 m / s, the fin assembly opens upwards at a 30° angle to the horizontal plane. After the diameter reduction, the new circular diameter of the flare head, which was originally 1000 mm, is approximately 140 mm. This ensures the backfire prevention function while significantly reducing the amount of molecular seal gas used. The gas flow regulating device 8 is a molecular seal gas flow regulating valve, located on the molecular seal gas inlet line 7, used to regulate and control the molecular seal gas supply.

[0035] An angular displacement sensor 5 is installed on the rotating shaft of the fin assembly. This sensor transmits the upward opening angle signal of the fin structure to the controller 6. The controller 6 adjusts the opening of the molecular sealing gas regulating valve according to the fin structure opening angle to control the molecular sealing gas volume, ultimately controlling the opening angle of the variable diameter flare head fins to be 30°. The fin structure is designed in a triangular shape. With the center line as the boundary, the left side is the normal shape, while the right side is slightly inclined inward. A rectangular baffle is welded at the center of the fin, located below the next fin on the right side. This cycle continues until multiple fin structures form a stable closed-loop structure, ensuring that the fin structures move upward and downward in unison. This prevents uneven stress on the fin structures when the venting gas is biased to one side of the pipeline, which could lead to inaccurate data from the angular displacement sensor 5 and unstable valve operation. Due to minor internal leakage in the high-pressure venting pipeline valves, this leaked gas acts similarly to the molecular sealing gas, replacing a portion of the molecular sealing gas volume and further reducing molecular sealing gas consumption. When the molecular sealing gas volume regulating valve is fully closed, if the fin structure opening angle is still greater than 30°, it indicates that the air defense system has serious internal leakage. It is necessary to inspect all the venting valves on site and maintain and repair the valves with internal leakage to provide support for predictive maintenance and repair of valves.

[0036] The outer side of the torch nozzle 3 is a polygonal wall-like structure, namely the windproof plate 2, composed of multiple perforated baffles. Each fin structure corresponds to one baffle, and the height of the baffle is slightly higher than the height of the fin structure in its vertical state. A locally protruding structure is provided at the center of the baffle to prevent the fin structure from being blown over by more than 90 degrees during high-flow-rate air release, requiring manual repositioning. When the airflow decreases, it ensures that the fin structure can return to its original shape under its own gravity. Simultaneously, the perforated baffles also replenish the internal environment with sufficient air, which is beneficial for complete combustion of the sealed gas.

[0037] A heating wire 1 is fixed above the fin assembly and baffle. Heating wire 1 can generate a high temperature of 900-1200℃, while the ignition temperature of methane is 538℃. The sustained high temperature of the heating wire is sufficient to ignite vented natural gas, replacing the function of a continuously lit lamp. Furthermore, the effect of using a heating wire to ignite natural gas is similar to a windproof lighter, as it will not be blown out by the wind. Commonly used heating wires are divided into iron-chromium-aluminum heating wires and nickel-chromium heating wires, both of which can withstand temperatures above 1200℃, with a maximum tolerance of 1400℃. Methane combustion can reach 2800℃ in sufficient oxygen conditions; this combustion is equivalent to oxyacetylene welding, while the combustion temperature of natural gas under normal conditions is 800-1000℃. Therefore, it is evident that the heating wire can withstand the combustion temperature of natural gas. A temperature sensor 4 is installed at the heating wire 1. The temperature sensor 4 transmits the temperature signal of the heating wire 1 to the controller 6. The controller 6 adjusts the current of the heating wire according to the temperature feedback to maintain the temperature of the heating wire 1 at 900℃. At this temperature, both combustion of the released air and low power consumption can be maintained. The traditional torch's permanent flame 9 and high-altitude high-energy automatic ignition equipment components are retained to preserve more operating conditions and emergency measures in case of emergencies.

[0038] The present invention proposes a method for extinguishing a torch system with a permanent torch lamp, characterized in that it includes: Step 1: Installation Preparation First, install the flare nozzle above the flare head, ensuring it is securely installed and accurately positioned to guarantee the normal gas emission of the flare system.

[0039] A wind deflector is installed on the outside of the torch nozzle. The installation of the wind deflector must ensure that it can effectively block the wind from interfering with the torch combustion, and at the same time ensure its stability so that it can work normally under various environmental conditions.

[0040] Install heating wires above the windbreak. When installing, pay attention to the reasonable layout of the heating wires so that they can generate heat evenly. Also, ensure that there is an appropriate distance between the heating wires and the windbreak and torch nozzles to avoid mutual interference.

[0041] Step 2: Connect the device The temperature sensor is mounted on the heating wire, ensuring close contact for accurate temperature detection. The temperature sensor is connected to the controller's input via a signal line; this connection must be secure and reliable to ensure stable signal transmission.

[0042] Connect the heating wire to the output terminal of the controller. The connection line must comply with electrical safety regulations to ensure stable current and prevent faults such as short circuits.

[0043] Step 3: System Debugging Power on the controller and initialize the system. Set parameters such as the temperature sensor's detection range and alarm threshold to ensure the controller can accurately receive the temperature sensor signal and make correct judgments.

[0044] Perform a heating test on the heating wire and observe the temperature changes reported by the temperature sensor. Adjust the output power of the heating wire using the controller to verify whether the controller's control function for the heating wire is normal.

[0045] Check the overall operation of the system, including whether the signal transmission is stable, whether the controller's control logic is correct, and whether the heating effect of the heating wire meets the requirements. If any problems are found, adjust and repair them promptly.

[0046] Step 4, Actual Operation When the torch system is operating normally, the temperature sensor monitors the temperature of the heating wire 1 in real time and transmits the temperature signal to the controller 6. If the temperature is lower than the expected value, the controller 6 controls the heating wire 1 to perform heating operation; if the temperature is higher than the expected value, the controller 6 controls the resistance wire 1 to stop heating operation.

[0047] The system proposed in this invention has the following advantages: (1) Solved the technical problem of small internal leakage of the vent valve and low-pressure tail gas, which is difficult to recover, such as vent gas and non-condensable gas, entering the flare and causing the flare lamp to fail to go out. (2) The use of electric heating wires to replace the flare burner lamps optimizes the molecular seal gas flow control mode, significantly reducing fuel gas consumption at oil and gas stations. Taking a 1000mm diameter flare as an example, it is estimated that using a 4kW electric heating wire would result in a maximum annual power consumption of approximately 35,000 kWh and a cost of approximately RMB 17,500. By controlling the temperature, the power consumption could be even lower. To ensure the effectiveness of the molecular seal, the molecular seal flow velocity at the flare nozzle must be maintained at 0.03-0.06 m / s, which translates to an actual flow rate of 740,000-1,480,000 cubic meters per year.

[0048] (3) Avoiding the long-term combustion of lamps and molecular seal gas supply under the old operating mode reduces carbon emissions and is of great significance for the effective use of energy and the protection of the atmospheric environment.

[0049] (4) The present invention has low modification cost and relatively easy implementation, and has important significance for the promotion of various oil and gas processing stations.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A torch system for extinguishing a torch's permanent flame, characterized in that, Includes controller (6), molecular seal and torch nozzle (3); The torch nozzle (3) is installed above the torch head. A windproof plate (2) is provided on the outside of the torch nozzle (3). A heating wire (1) is provided above the windproof plate (2). A temperature sensor (4) is provided on the heating wire (1). The temperature sensor (4) is connected to the input terminal of the controller (6). The heating wire (1) is connected to the output terminal of the controller (6).

2. The torch system for extinguishing the torch's permanent flame according to claim 1, characterized in that, An angular displacement sensor (5) is provided on the torch nozzle (3), and a gas volume regulating device (8) is provided on the gas inlet pipeline (7) of the molecular seal. The angular displacement sensor (5) is connected to the input end of the controller (6), and the gas volume regulating device (8) is connected to the output end of the controller (6).

3. The torch system for extinguishing the torch's permanent flame according to claim 1, characterized in that, The height of the windproof plate (2) is greater than the height of the torch nozzle (3) when it is in a vertical state.

4. The torch system for extinguishing the torch's permanent flame according to claim 1, characterized in that, The torch nozzle (3) is composed of several fin structures.

5. The torch system for extinguishing the torch's permanent flame according to claim 4, characterized in that, The fin structure is triangular in shape, and a connecting plate is installed on the fin structure to form a closed loop structure by means of the connecting plate.

6. The torch system for extinguishing the torch's permanent flame according to claim 4, characterized in that, The windproof plate (2) is a columnar structure spliced ​​together from several baffles, and the fin structure is set in a one-to-one correspondence with the baffles.

7. The torch system for extinguishing the torch's permanent flame according to claim 6, characterized in that, A raised structure is provided at the center of the baffle.

8. The torch system for extinguishing the torch's permanent flame according to claim 6, characterized in that, Each baffle has a through hole.

9. The torch system for extinguishing the torch's permanent flame according to claim 1, characterized in that, A continuous light (9) is installed at the emission outlet of the flare system.

10. A method for extinguishing a torch's continuously lit lamp, characterized in that, A torch system for extinguishing the torch's permanent flame according to any one of claims 1 to 9, comprising: The torch nozzle (3) is installed above the torch head, and a windproof plate (2) is installed on the outside of the torch nozzle (3). A heating wire (1) is installed above the windproof plate (2). When the torch system is running normally, the temperature sensor (4) monitors the temperature of the heating wire (1) in real time and transmits the temperature signal to the controller (6). If the temperature is lower than the expected value, the controller (6) controls the heating wire (1) to perform heating operation. If the temperature is higher than the expected value, the controller (6) controls the heating wire (1) to stop heating operation.

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