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CN-224215350-U - Sonic torch burner, overhead torch and ground torch

CN224215350UCN 224215350 UCN224215350 UCN 224215350UCN-224215350-U

Abstract

The utility model discloses a sonic torch burner which comprises a Laval nozzle, wherein an air inlet of the Laval nozzle is connected with an air outlet of a torch air pipe, a pressure regulating valve is arranged at one end, far away from the Laval nozzle, of the torch air pipe, a flow rate sensor for monitoring the air flow rate is arranged at a narrow throat of the Laval nozzle, and the pressure regulating valve and the flow rate sensor are both connected with a controller. The utility model also discloses an overhead torch and a ground torch. According to the utility model, through the joint control among the pressure regulating valve, the flow velocity sensor and the controller, the air flow velocity at the narrow throat part of the Laval nozzle is ensured to be sonic, so that the stable supersonic speed regulation and control of the combustible gas velocity at the outlet of the Laval nozzle are ensured, and the combustion stability is further realized.

Inventors

  • KUANG CHEN
  • LIU DI
  • LIN YUJIE
  • LIU YI
  • YU ANFENG

Assignees

  • 中国石油化工股份有限公司
  • 中石化安全工程研究院有限公司
  • 中石化国家石化项目风险评估技术中心有限公司

Dates

Publication Date
20260508
Application Date
20250529

Claims (12)

  1. 1. A sonic torch burner comprises a Laval nozzle, and is characterized in that, The gas inlet of the Laval nozzle is connected with the gas outlet of the flare gas pipe, and a pressure regulating valve is arranged at one end, far away from the Laval nozzle, of the flare gas pipe; a flow velocity sensor for monitoring the air flow velocity is arranged at the narrow throat of the Laval nozzle; The pressure regulating valve and the flow rate sensor are connected with the controller.
  2. 2. The sonic flare burner of claim 1, wherein the pressure regulating valve is a solenoid valve.
  3. 3. The sonic flare burner of claim 1, wherein an igniter is provided on the laval nozzle.
  4. 4. A sonic flare burner as in claim 3 wherein the igniter is connected to a controller.
  5. 5. A sonic torch burner as claimed in claim 3, wherein the igniter is a pilot lamp igniter or an electric spark igniter or an electric arc igniter.
  6. 6. The sonic flare burner of claim 4, wherein a flame detector is provided on the laval nozzle.
  7. 7. The sonic flare burner of claim 6, wherein the flame detector is connected to a controller.
  8. 8. The sonic flare burner of claim 1 wherein the inlet of the flare stack is connected to a combustible gas line to which a knock out pot is connected.
  9. 9. An overhead torch which is characterized by comprising a flame stabilizer and a plurality of sonic torch burners according to any one of claims 1-7, wherein the torch air pipes of each sonic torch burner are connected into an integral structure through a damping bracket; And the air inlets of the flare gas pipes in the flame stabilizer and the sonic flare burners are connected with the combustible gas pipeline.
  10. 10. The overhead torch of claim 9 wherein the combustible gas line is connected to a knock out tank.
  11. 11. A ground torch, characterized by comprising a plurality of sonic torch burners according to any of claims 1-7, wherein the gas inlet of the torch gas pipe in each sonic torch burner is connected to a combustible gas pipeline.
  12. 12. The ground flare of claim 11 wherein the combustible gas line is connected to a knock-out tank.

Description

Sonic torch burner, overhead torch and ground torch Technical Field The utility model belongs to the technical field of combustors, and particularly relates to a sonic torch combustor, an overhead torch and a ground torch. Background In order to prevent accidents such as process runaway, fire disaster, overpressure rupture of tank areas and pipelines, a flare device is generally arranged to release and burn off combustible gas in the accident condition, and in addition, the flare device also has the effect of burning off waste gas in the daily production process. At present, the in-service torch burner mostly adopts an air or steam combustion-supporting mode, so that the consumption of the combustion improver is large, and the cost reduction and efficiency enhancement are difficult. And relatively few sonic flare burners are used to achieve efficient entrainment, blending, combustion of air by increasing the fuel gas exit velocity. The sonic torch burner generally adopts a Laval nozzle, and in order to ensure stable combustion, the combustible gas speed at the narrow throat of the Laval nozzle needs to be ensured to reach sonic speed, but the pressure in the existing upstream pipeline is stirred, so that the gas flow speed at the narrow throat of the Laval in the sonic torch burner also fluctuates, and the stable combustion cannot be ensured. Disclosure of utility model The utility model aims to overcome the defects of the prior art and provide a sonic torch burner. In order to achieve the above purpose, the utility model adopts the following technical scheme: a sonic flare burner comprising a laval nozzle; The gas inlet of the Laval nozzle is connected with the gas outlet of the flare gas pipe, and a pressure regulating valve is arranged at one end, far away from the Laval nozzle, of the flare gas pipe; a flow velocity sensor for monitoring the air flow velocity is arranged at the narrow throat of the Laval nozzle; The pressure regulating valve and the flow rate sensor are connected with the controller. Preferably, the pressure regulating valve is an electromagnetic valve. Preferably, an igniter is arranged on the Laval nozzle. Preferably, the igniter is connected to a controller. Preferably, the igniter is a pilot lamp igniter or an electric spark igniter or an electric arc igniter. Preferably, a flame detector is arranged on the Laval nozzle. Preferably, the flame detector is connected to a controller. Preferably, the air inlet of the flare gas pipe is connected with a combustible gas pipeline, and the combustible gas pipeline is connected with a liquid separating tank. The utility model also discloses an overhead torch. An overhead torch comprises a flame stabilizer and a plurality of sonic torch burners, wherein the torch air pipes of the sonic torch burners are connected into an integral structure through a damping bracket; And the air inlets of the flare gas pipes in the flame stabilizer and the sonic flare burners are connected with the combustible gas pipeline. Preferably, the combustible gas pipeline is connected with a liquid separating tank. The utility model also discloses a ground torch. A ground torch comprises a plurality of sonic torch burners, wherein the air inlets of the torch air pipes in the sonic torch burners are connected with a combustible gas pipeline. Preferably, the combustible gas pipeline is connected with a liquid separating tank. The beneficial effects of the utility model are as follows: (1) According to the utility model, through the joint control among the pressure regulating valve, the flow velocity sensor and the controller, the air flow velocity at the narrow throat part of the Laval nozzle is ensured to be sonic, so that the stable supersonic speed regulation and control of the combustible gas velocity at the outlet of the Laval nozzle are ensured, and the combustion stability is further realized. (2) The utility model can realize secondary ignition after flameout through the combined control of the flame detector, the pressure regulating valve, the controller and the igniter. Drawings The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. FIG. 1 is a schematic diagram of the sonic flare burner of the present utility model; FIG. 2 is a schematic diagram of the connection of the pressure regulating valve, the flow rate sensor and the controller in the present utility model; FIG. 3 is a diagram of an arrangement of individual sonic flare burners in an overhead flare of the present utility model; FIG. 4 is a diagram showing the arrangement of the sonic torch burners in the ground torch of the present utility model; Wherein: 1-Laval nozzle; 2-flare stack; 3-a combustible gas pipeline; 4-a pressure regulating valve; 5-a flow rate sensor; 6-a controller;