Daily Question (March 12)

False water level is the actual water level that is not true during boiler operation. False water levels occur because when the pressure in the drum drops suddenly, the saturation temperature of the boiler water falls to that corresponding to the lower pressure, causing the boiler water to release a large amount of heat for evaporation. As a result, the bubbles in the boiler water increase, and the volume of the steam-water mixture expands, causing the water level to rise rapidly and creating a false water level. When the pressure in the drum rises suddenly, the corresponding saturated temperature increases; some heat is then used to heat the boiler water, reducing the amount of heat available for evaporating it. As a result, the number of bubbles in the boiler water decreases, causing the volume of the steam-water mixture to shrink and leading to a rapid drop in the water level, which creates an apparent water level. Furthermore, when the heat load inside the boiler increases or decreases suddenly, the specific volume of water will increase or decrease, which can also lead to an artificial water level. False water levels can occur in cases of sudden changes in boiler load, flameout, safety valve operation, or unstable combustion. 　　False water levels fall into three categories: 1. Gauge leakage. Steam side leakage, high water level ； Water leakage on the water side; water level is low. 　　2. The water level gauge is clogged. Whether there is a blockage on the steam side or the water side, the water level remains high; when there is a blockage on the water side of the gauge, the gauge stops fluctuating. 　　3. When the load increases sharply and air pressure drops, the water level gauge rises for a short period of time. A sharp increase in load accompanied by a drop in pressure indicates that the boiler’s evaporation rate is lower than the external load. As the saturation temperature drops, the boiler water vaporizes on its own, increasing the volume of steam in the steam-water mixture within the water wall. This pushes the water in the water wall into the drum, causing the water level to rise. Conversely, when the load decreases sharply and pressure rises, the water level drops for a short period of time. 1# Stand in the east

“\"False water level\" refers to a temporarily inaccurate water level. When the unit load increases suddenly and the drum pressure drops, a large amount of heat is released as the boiler’s saturation temperature drops to that corresponding to the new pressure, resulting in spontaneous evaporation. This increases the number of bubbles in the boiler water, causing it to expand and raising the water level, thus creating an artificial water level. The rise in water level at this time is temporary; subsequently, the water level will drop as the water supply flow rate is less than the steam generation rate. Conversely, if the unit load drops suddenly while the drum pressure rises sharply, it will inevitably cause a temporary drop in water level, resulting in a false water level as well.

False water level is the actual water level that is not true during boiler operation. False water levels occur because when the pressure in the drum drops suddenly, the saturation temperature of the boiler water falls to that corresponding to the lower pressure, causing the boiler water to release a large amount of heat for evaporation. As a result, the bubbles in the boiler water increase, and the volume of the steam-water mixture expands, causing the water level to rise rapidly and creating a false water level. When the pressure in the drum rises suddenly, the corresponding saturated temperature increases; some heat is then used to heat the boiler water, reducing the amount of heat available for evaporating it. As a result, the number of bubbles in the boiler water decreases, causing the volume of the steam-water mixture to shrink and leading to a rapid drop in the water level, which creates an apparent water level. Furthermore, when the heat load inside the boiler increases or decreases suddenly, the specific volume of water will increase or decrease, which can also lead to an artificial water level. False water levels can occur in cases of sudden changes in boiler load, flameout, safety valve operation, or unstable combustion. 　　

“\"False water level\" refers to a temporarily inaccurate water level. When the unit load increases suddenly and the drum pressure drops, a large amount of heat is released as the boiler’s saturation temperature drops to that corresponding to the new pressure, resulting in spontaneous evaporation. This increases the number of bubbles in the boiler water, causing it to expand and raising the water level, thus creating an artificial water level. The rise in water level at this time is temporary; subsequently, the water level will drop as the water supply flow rate is less than the steam generation rate. Conversely, if the unit load drops suddenly while the drum pressure rises sharply, it will inevitably cause a temporary drop in water level, resulting in a false water level as well.

False water level is the actual water level that is not true during boiler operation. False water levels occur because when the pressure in the drum drops suddenly, the saturation temperature of the boiler water falls to that corresponding to the lower pressure, causing the boiler water to release a large amount of heat for evaporation. As a result, the bubbles in the boiler water increase, and the volume of the steam-water mixture expands, causing the water level to rise rapidly and creating a false water level. When the pressure in the drum rises suddenly, the corresponding saturated temperature increases; some heat is then used to heat the boiler water, reducing the amount of heat available for evaporating it. As a result, the number of bubbles in the boiler water decreases, causing the volume of the steam-water mixture to shrink and leading to a rapid drop in the water level, which creates an apparent water level. Furthermore, when the heat load inside the boiler increases or decreases suddenly, the specific volume of water will increase or decrease, which can also lead to an artificial water level. False water levels can occur in cases of sudden changes in boiler load, flameout, safety valve operation, or unstable combustion. 　　False water levels fall into three categories: 1. Gauge leakage. Steam side leakage, high water level ； Water leakage on the water side; water level is low. 　　2. The water level gauge is clogged. Whether there is a blockage on the steam side or the water side, the water level remains high; when there is a blockage on the water side of the gauge, the gauge stops fluctuating. 　　3. When the load increases sharply and air pressure drops, the water level gauge rises for a short period of time. A sharp increase in load accompanied by a drop in pressure indicates that the boiler’s evaporation rate is lower than the external load. As the saturation temperature drops, the boiler water vaporizes on its own, increasing the volume of steam in the steam-water mixture within the water wall. This pushes the water in the water wall into the drum, causing the water level to rise. Conversely, when the load decreases sharply and pressure rises, the water level drops for a short period of time.

“\"False water level\" refers to a temporarily inaccurate water level. When the unit load increases suddenly and the drum pressure drops, a large amount of heat is released as the boiler’s saturation temperature drops to that corresponding to the new pressure, resulting in spontaneous evaporation. This increases the number of bubbles in the boiler water, causing it to expand and raising the water level, thus creating an artificial water level. The rise in water level at this time is temporary; subsequently, the water level will drop as the water supply flow rate is less than the steam generation rate. Conversely, if the unit load drops suddenly while the drum pressure rises sharply, it will inevitably cause a temporary drop in water level, resulting in a false water level as well.

This post was last edited by Zhang Yanbo on 2010-3-12 08:54. False water level refers to a temporarily inaccurate water level. When the unit load increases suddenly and the drum pressure drops, a large amount of heat is released as the boiler’s saturation temperature drops to that corresponding to the new pressure, resulting in spontaneous evaporation. This increases the number of bubbles in the boiler water, causing it to expand and raising the water level, thus creating an artificial water level. The rise in water level at this time is temporary; subsequently, the water level will drop as the water supply flow rate is less than the steam generation rate. Conversely, if the unit load drops suddenly while the drum pressure rises sharply, it will inevitably cause a temporary drop in water level, resulting in a false water level as well.

“\"False water level\" refers to a temporarily inaccurate water level. When the drum pressure drops suddenly, the saturation temperature of the boiler water falls to that corresponding to the new pressure, which causes a large amount of heat to be released for evaporation. As a result, more bubbles form in the boiler water, leading to an expansion in volume and an increase in the water level, thus creating a false water level. If the drum pressure rises suddenly, the corresponding saturation temperature increases. Part of the heat is used to heat the water in the pot, reducing the rate of evaporation; as a result, the number of bubbles in the water decreases and its volume shrinks, which leads to a drop in the water level and thus the formation of a false water level as well.

“\"False water level\" refers to a temporarily inaccurate water level. When the unit load increases suddenly and the drum pressure drops, a large amount of heat is released as the boiler’s saturation temperature drops to that corresponding to the new pressure, resulting in spontaneous evaporation. This increases the number of bubbles in the boiler water, causing it to expand and raising the water level, thus creating an artificial water level. The rise in water level at this time is temporary; subsequently, the water level will drop as the water supply flow rate is less than the steam generation rate. Conversely, if the unit load drops suddenly while the drum pressure rises sharply, it will inevitably cause a temporary drop in water level, resulting in a false water level as well.

False water level is the actual water level that is not true during boiler operation. False water levels occur because when the pressure in the drum drops suddenly, the saturation temperature of the boiler water falls to that corresponding to the lower pressure, causing the boiler water to release a large amount of heat for evaporation. As a result, the bubbles in the boiler water increase, and the volume of the steam-water mixture expands, causing the water level to rise rapidly and creating a false water level. When the pressure in the drum rises suddenly, the corresponding saturated temperature increases; some heat is then used to heat the boiler water, reducing the amount of heat available for evaporating it. As a result, the number of bubbles in the boiler water decreases, causing the volume of the steam-water mixture to shrink and leading to a rapid drop in the water level, which creates an apparent water level. Furthermore, when the heat load inside the boiler increases or decreases suddenly, the specific volume of water will increase or decrease, which can also lead to an artificial water level. False water levels can occur in cases of sudden changes in boiler load, flameout, safety valve operation, or unstable combustion. 　　False water levels fall into three categories: 1. Gauge leakage. Steam side leakage, high water level ； Water leakage on the water side; water level is low. 　　2. The water level gauge is clogged. Whether there is a blockage on the steam side or the water side, the water level remains high; when there is a blockage on the water side of the gauge, the gauge stops fluctuating. 　　3. When the load increases sharply and air pressure drops, the water level gauge rises for a short period of time. A sharp increase in load accompanied by a drop in pressure indicates that the boiler’s evaporation rate is lower than the external load. As the saturation temperature drops, the boiler water vaporizes on its own, increasing the volume of steam in the steam-water mixture within the water wall. This pushes the water in the water wall into the drum, causing the water level to rise. Conversely, when the load decreases sharply and pressure rises, the water level drops for a short period of time.