The negative pressure of the differential pressure gauge fluctuates due to atmospheric wind forces

1. The combustion furnace maintains an appropriate oxygen level inside the furnace by controlling the right negative pressure, thereby preventing incomplete combustion due to insufficient oxygen or reduced combustion efficiency caused by too much air； 2. Negative pressure is used to control the flue dampers or variable-frequency exhaust fans ； Some also come equipped with negative pressure interlock ； 3. The pyrolysis furnace has encountered similar situations; the manager said, “The furnace is made of tofu mixed with farts,” and it trips due to strong winds. Later, similarly, a thin elbow pipe with a diameter of φ6 was installed on the negative pressure side (the side facing the atmosphere) of the differential pressure gauge (with as many bends as possible), along with a wind shield; rock wool was filled inside. The main purpose was still to reduce the impact of wind on the instrument’s measurements ； 4. Strong winds do have an impact on the combustion in the burner via the air dampers; in other words, strong winds affect the negative pressure in the furnace, and it is possible to increase the damping time of the transmitter accordingly. Later, through energy-saving upgrades and the installation of air preheaters, the impact of strong winds on the negative pressure in the furnace was reduced, resulting in minimal fluctuations during strong winds. For negative pressure control, manual control is used during fluctuations. The above information is for reference only.

Insert a piece of sponge into the tube on the air intake side