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CN-224229997-U - Flame combustion system on duty in wide range

CN224229997UCN 224229997 UCN224229997 UCN 224229997UCN-224229997-U

Abstract

The utility model provides a flame combustion system with a wide range on duty, which comprises a combustion chamber on duty, an igniter, a fire detection device, a flow divider and a burner, wherein the flow divider is of a hollow structure with two open ends and comprises an airflow inlet part and an airflow outlet part which are communicated, the airflow outlet part is positioned in the combustion chamber on duty, the airflow outlet part comprises a main flow hole wall and a flow dividing ring wall which are communicated, the main flow hole wall extends towards the direction in the flow divider at the joint of the main flow hole wall and the flow dividing ring wall to form a blocking shoulder, the periphery of the flow dividing ring wall is provided with a secondary flow hole, and the main flow hole is formed in the main flow hole wall. The main flow holes and the secondary flow holes are formed by the flow divider, the total premixed gas enters the flow divider, most of the total premixed gas is sprayed out through the main flow holes, and the small part of the total premixed gas is sprayed out from the secondary flow holes positioned on the side wall of the flow dividing annular wall under the barrier effect of the retaining shoulder, so that the total premixed gas is divided. The igniter ignites the secondary flow premixed gas to burn and serve as a stable flame root, and ignites the primary flow premixed gas to form jet flow premixed flame to strengthen combustion.

Inventors

  • GAO YULE
  • WANG WENQI
  • JIN XULI
  • HUANG SHUGUANG
  • LI SHAOJIE

Assignees

  • 洛阳瑞昌环境工程有限公司

Dates

Publication Date
20260512
Application Date
20250430

Claims (8)

  1. 1. The utility model provides a flame combustion system on duty in a wide range, its characterized in that, including combustion chamber on duty (1), some firearm (2), fire examine device (3), shunt (4) and combustor (9), the upper end of combustion chamber on duty (1) sets up base (5) for open end (11) lower extreme, some firearm (2) and fire examine device (3) are located the inside of combustion chamber on duty (1), shunt (4) are both ends open-ended hollow structure, including air inlet portion (41) and air outlet portion (42) of intercommunication, base (5) are worn out to air inlet portion (41), air outlet portion (42) are located the inside of combustion chamber on duty (1), air outlet portion (42) are including mainstream pore wall (421) and the diverter ring wall (422) of intercommunication, mainstream pore wall (421) and diverter ring wall (422) junction extend towards the inside direction of shunt (4) and form and keep off shoulder (423), the periphery of diverter ring wall (422) sets up time, inside formation mainstream pore wall (421).
  2. 2. The wide range on duty flame combustion system of claim 1, wherein the tail end of the igniter (2) is connected to the base (5), the tail end of the fire detection device (3) is connected to the base (5), the base (5) is provided with a mounting hole (51), and the diverter (4) passes through the mounting hole (51) and is connected to the mounting hole (51).
  3. 3. The broad range on-duty flame combustion system of claim 1, comprising a premixer (6) and an air intake conduit, wherein one end of the premixer (6) is in communication with the air flow inlet (41) and the other end is in communication with the air intake conduit, and the fuel gas and combustion supporting gas enter the premixer (6) via the air intake conduit to mix to form a total premixed gas.
  4. 4. A wide range on duty flame combustion system as set forth in claim 3 wherein said air inlet conduit is a gas pipe (7) and an air pipe (8) concentrically sleeved, said gas pipe (7) and air pipe (8) are both in communication with said premixer (6), said air pipe (8) being detachably connected to said premixer (6).
  5. 5. The broad range on duty flame combustion system of claim 4 wherein said gas pipe (7) is provided with a pressure sensor for detecting the pressure of the gas and reflecting the injection rate of the mainstream premix gas.
  6. 6. The broad range on duty flame combustion system of claim 1 wherein said flow divider (4) is hollow cylindrical, the diameter of the air flow inlet (41) is D1, the diameter of the primary flow orifice (43) is D2, the diameter of the secondary flow orifice (44) is D3, the diameter of the open end (11) is D4,1< D1/D2<2,6< D1/D3<10, D4/D1>1.25.
  7. 7. The wide duty flame combustion system of claim 1, wherein said secondary flowbore (44) is disposed obliquely upward.
  8. 8. A wide duty flame combustion system as set forth in claim 3 wherein a gas valve is provided at the lower end of the premixer (6), wherein the gas valve is open with the gas inlet conduit in communication with the premixer (6) and wherein the gas valve is closed with the gas inlet conduit in communication with the premixer (6).

Description

Flame combustion system on duty in wide range Technical Field The utility model relates to the technical field of petrochemical engineering on-duty flames, in particular to a wide-range on-duty flame combustion system. Background The conventional on-duty flame combustion system may occur a phenomenon that it is difficult to stably ignite and burn in the face of a wide range of factors such as gas pressure fluctuation (from 10KPa to 300 KPa), burner internal pressure fluctuation (from negative pressure to positive pressure), fuel composition fluctuation (from low carbon to high hydrogen), altitude variation, environmental humidity variation, and the like. In the prior art, as in CN113237095A, an ignition device, a flame detection method and a combustion system are disclosed, in which a main fuel pipe, a secondary fuel pipe, an ignition rod and the like are arranged, and a diffusion combustion mode is adopted, and combustion is performed by using combustion-supporting air of a burner as supply air. In order to make the fuel be sprayed in two stages, a main fuel pipe and a secondary fuel pipe are required to be arranged, so that the fuel is sprayed in two stages, the secondary fuel pipe is sprayed with ignition fuel, the main fuel pipe is sprayed with main fuel, in the ignition process of the ignition device, the ignition fuel of the secondary fuel pipe is firstly ignited by an ignition rod, then the flame of the secondary fuel pipe can ignite the main fuel of the main fuel pipe, and then the flame of the main fuel pipe and the flame of the secondary fuel pipe jointly form a pilot flame. The arrangement of the primary and secondary fuel pipes creates a complex arrangement. Disclosure of utility model In view of the above, the present utility model aims to provide a flame combustion system with a wide range of duty, so as to solve the problem of complex structure of the flame combustion system with duty under a wide range of operating conditions. In order to achieve the above purpose, the technical scheme of the utility model is realized as follows: The utility model provides a flame combustion system on duty in wide range, includes combustion chamber, some firearm, fire detection device, shunt and combustor on duty, the upper end of combustion chamber on duty sets up the base for the open end lower extreme, some firearm and fire detection device are located the inside of combustion chamber on duty, the shunt is both ends open-ended hollow structure, including air inlet portion and the air outlet portion of intercommunication, the base is worn out to the air inlet portion, the air outlet portion is located the inside of combustion chamber on duty, the air outlet portion includes mainstream pore wall and the reposition of redundant personnel wall of intercommunication, the mainstream pore wall extends to form the fender shoulder towards the inside direction of shunt in the junction of mainstream pore wall and reposition of redundant personnel wall, the periphery of reposition of redundant personnel wall sets up the secondary flow hole, the inside of mainstream pore wall forms the dominant flow hole. The main flow hole and the secondary flow hole formed by the flow divider are utilized, the total premixed gas enters the flow divider, most of the total premixed gas is sprayed out through the main flow hole, the small part of the total premixed gas is blocked by the blocking shoulder, and the total premixed gas is sprayed out from the secondary flow hole positioned on the side wall of the flow dividing ring wall, so that the total premixed gas is divided. The igniter ignites the secondary flow premixed gas, the secondary flow premixed gas burns in the on-duty combustion chamber and serves as a stable flame root, and the primary flow premixed gas is ignited to form jet flow premixed flame so as to strengthen combustion. Further, the tail end of the igniter is connected with the base, the tail end of the fire detection device is connected with the base, the base is provided with a mounting hole, and the diverter penetrates through the mounting hole and is connected with the mounting hole. The base is used for fixing and limiting the igniter, the fire detection device and the shunt. The fire detection device is used for detecting whether the flame on duty is in a burning state. Furthermore, the on-duty flame combustion system comprises a premixer and an air inlet pipeline, one end of the premixer is communicated with the air inlet part, the other end of the premixer is communicated with the air inlet pipeline, and the fuel gas and the combustion-supporting gas enter the premixer through the air inlet pipeline to be mixed to form total premixed gas. The fuel gas and the combustion-supporting gas are mixed through the premixer, so that the combustion is carried out by mixing firstly, and the proper fuel equivalent ratio can be designed according to different fuel gas components, thereby ensuring the combustion stability