Sage-Tips

What are the parts of fire tube boiler?

Different Components & Mountings Placed on the fire tube boiler

• Safety valve.
• Feed check valve (a kind of non-return valve)
• Water level indicator.
• Pressure gauge.
• Steam stop valve.

What are the parts of fire tube boiler and its functions?

A locomotive boiler has three main components: a double-walled firebox; a horizontal, cylindrical “boiler barrel” containing a large number of small flue-tubes; and a smokebox with chimney, for the exhaust gases. The boiler barrel contains larger flue-tubes to carry the superheater elements, where present.

How does a steam distribution system work?

The steam distribution system transports the steam to the consumers. The pressure in the steam distribution system is usually between 2 and 12 bar, where steam with a pressure of between 2 and 5 bar is called low-pressure steam, and medium-pressure steam has a pressure of between 9 and 12 bar (SFI, 1990).

What is steam distribution header?

The Boiler Headers (Steam Distribution Headers) are fabricated using premium quality raw material and are in high demand in the market. Headers after fabrication are stress relieved to make the Steam distribution headers free from stresses. IBR or 3rd party inspection undertaken.

How many pressure does a fire tube boiler can produce?

Fire tube boilers are usually designed for pressures up to a maximum of 250 psi and approximately 750 horsepower.

What are the components of steam distribution system?

Every steam system consists of the following major components:

• Boiler. In the boiler, heat is added to liquid water to generate steam at a certain pressure.
• Steam Manifold. Smaller diameter piping connects the steam header to a steam manifold.
• Condensate Manifold.
• Gleason Steam Gauge.

What kind of valve is used for a boiler stop valve?

crown valve
Boiler stop valves A steam boiler must be fitted with a stop valve (also known as a crown valve) which isolates the steam boiler and its pressure from the process or plant. It is generally an angle pattern globe valve of the screw-down variety. Figure 3.7. 3 shows a typical stop valve of this type.

How do I increase pressure in my steam boiler?

Therefore the heat energy saved will be 500*35.64=17820 Kcal/hr. also the corresponding steam load will be 17820/517.46 = 34.44 hg/hr. Secondly, reducing pressure at the point of usage also ensures that steam delivered has a higher dryness fraction. Hfg = 481.82 Kcal/kg.

Why fire tube boilers Cannot be operated at high pressures?

The fire tubes are immersed in water inside the main vessel of the boiler. As the hot gases are passed through these tubes, the heat energy of the gasses is transferred to the water surrounds them. As the steam and water is stored is the same vessel, it is quite difficult to produce very high pressure steam from.

What will happen if fusible plug is not provided in boiler?

What will happen if a fusible plug is not used in the boiler? When the steam temperature reaches the melting point of the fusible plug ,plug melts and sends the steam out through the plug hole. This escaped steam avoided over pressure in the steam boiler vessel which eliminated the risk of burst in steam boilers.

How does a fire tube boiler work?

Fire-tube boiler is a type of boiler in which hot gas passes from the fire through one or more pipes that pass through a sealed water container. The heat of the gas is transferred through the wall of the tube through heat conduction, heating the water and eventually generating steam.

What are the different types of boiler pipe?

Types: Straight boiler pipe, and U boiler steel pipe for tube exchanger bundle. These standards specify the classification, size, shape, weight and allowable deviation, technical requirements, inspection and test, packaging, marking and quality certificate of seamless steel tubes for boiler.

What is the maximum steam pressure of a fire tube boiler?

As a guideline, competitive fire tube boilers for steam speeds up to 12,000 kg / hour with pressures up to 18 kg / cm2. Fire tube boilers can use fuel oil, gas or solid fuel in their operations.

What is the difference between a direct tube and return tube boiler?

Also, the same length of a combustion chamber was much less effective on a direct tube than on a return tube boiler, at least without baffling. The immersion fired boiler is a single-pass fire-tube boiler that was developed by Sellers Engineering in the 1940s.