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Why you use minus to zero range in drum level transmitter?
I refer to Steam Boiler drum level. It is actually - to some positive figure is the range. Generally the boiler level is maintained at mid point that is zero. The transmistter is differential type. (DP type) If the transmitter is with a specified signal out put of 4-20 mA, it sends out 4 mA at lowest level and 20 mA at highest level. At mid level zero it sends out 12 mA. Differential pressure is highest at actual lowest level and lowest at actual highest level of the drum. By keeping negative to positive range there is fair amount of analog signal on lower and higher side of the drum.
What is the purpose of boiler drum?
Purpose of the boiler drum is to collect steam from all the various tubes in a boiler, and send it to the turbine to spin the generator
Who invented the corner tube boiler?
November 12, 1944, the first basic patent for Corner Tube Boilers (= Eckrohrkessel, Berlin, Germany) was applied for. During this time oil as fuel ran short. All efforts, to save energy and use domestic and alternate resources, were to be made. One came up with an idea, to operate cars and trucks, not on gasoline or diesel fuel, but with steam.Dr. Vorkauf, a specialist for water circulation in boilers, especially in La Mont boilers (forced circulation boilers), got the order to design a small boiler for a steam engine fired with coal or wood. The result was not as expected a forced circulation boiler, but a natural circulation boiler. A forced circulation boiler of this size would have been too costly.Due to his experience with the La Mont boiler Dr. Vorkauf had the idea to obtain a pre-separation of the steam - water mixture in front of the drum. An extremely lively water circulation resulted from unheated downcomers and a suitable arrangement of the mixture tubes. The unheated downcomers were installed in the 4 corners of the boiler, where they not only served the purpose of water circulation, but also as a support frame for the boiler. The boiler with such an arrangement of the downcomers in the corners was called Corner Tube Boiler (Eckrohrkessel, Eckrohr-Boiler).
If you put a measuring stick into a 55 gallon drum of oil and received a reading of 14 inches how much oil is in the 55 gallon drum?
V=(πD2/4)h where D is the diameter of the 55 gallon drum and h is the height of the oil. Or if you prefer V=(2πr2h where r is the radius of the drum and h is as above.
What are height and diameter of 55 gal steel drum?
Height = 36 inches (3 feet) Diameter = 21 inches
What will happen when boiler steam drum level goes down?
Overheating of water wall tubes may cause crack. Boiler will damage due to boiler drum level goes down.
Why you use minus to zero range in drum level transmitter?
I refer to Steam Boiler drum level. It is actually - to some positive figure is the range. Generally the boiler level is maintained at mid point that is zero. The transmistter is differential type. (DP type) If the transmitter is with a specified signal out put of 4-20 mA, it sends out 4 mA at lowest level and 20 mA at highest level. At mid level zero it sends out 12 mA. Differential pressure is highest at actual lowest level and lowest at actual highest level of the drum. By keeping negative to positive range there is fair amount of analog signal on lower and higher side of the drum.
What is the use of steam drum in boiler?
The steam drum separated the steam from the water and stream mixture in the boiler drum.
What is the purpose of boiler drum?
Purpose of the boiler drum is to collect steam from all the various tubes in a boiler, and send it to the turbine to spin the generator
What will happen if boiler drum level goes high?
the component seperator will not work and the cost of fuel will increase.
What is drum boiler?
A drumless boiler is obviously a boiler without a drum. The steam is fed into a header, then into a turbine for making electricity. Quality control of the water used is of extreme importance. Since there is no water level in a drum to maintain, feedwater must be constant with no interruption of any kind. With a drum type, water feed can be interrupted for a very short time. Not so with a drumless type.
What is the difference between the operation of a automatic boiler and manual boiler?
boiler are working on same principal but automatic and manual boiler has difference that manual boiler working at single element loop and automatic boiler work at three element loop.single loop means when fuel increase mean load increase on boiler by adjusting fuel operator has to adjust steam drum level manualy , while automatic means when load increas, fuel increase steam drum level adjust automaticaly by watching fuel consumption.
Why is to safety valve mounted on boiler drum?
the safety valve is mounted on the top of drum because, if the water level in boiler decreases a certain value, the temperature gets increased in water drum because of lack of water. So, increase in temperature result in high pressure in steam drum, as the safety valve is designed to withstand a certain pressure, after a cetain pressure, the safety valve is removed by high pressure of steam. this is why the safety valve is mounted on top of boiler drum. +++ Shall we sort out that lot? That answer is wrong. Its only link with water-level is that the valve has to be above the water anyway. If the boiler runs dry the safety-valve will not protect it. The safety-valve is there to prevent the steam pressure rising to a potentially a dangerous level. It is set to open at the boiler's designed working pressure.
CFBC boiler operation procedure?
drum level maintain at48to52% O2 4% id draft _2to+2
What is the area between the steam drum and the mud drum ona boiler?
Generator
Why drum level increases during light up of boiler?
During the light-up phase of a boiler, the feedwater flow rate might not match the steam production rate initially, leading to a temporary increase in drum level. This can be due to the time it takes for the water level control system to stabilize and adjust to the changing conditions during startup. Once the system reaches equilibrium and the feedwater flow rate matches the steam production, the drum level will stabilize.
Why boiler drum manhole in elliptical in shape?
as the boiler drum is cylindrical in shape due to low stress concentration and in both end the diameter will be less.so for easy entry into the drum for a man the drum man hole is elliptical in shape.
