File Name: accessories and mountings of boiler .zip
THEORY: For efficient operation and maintenance of safety, the boiler equipped with two categories of components and elements. First categories include the fittings which are primarily indicated for the safety of the boiler and for complete control the process of steam generation. These units are called mountings. The mounting from an integral part of the boiler and are mounted on the body of the boiler itself. The following mountings are usually installed on the boiler.
After a comparatively short period, only eight out of the 11 boilers examined exploded. This compared to steam boiler explosions in boilers not examined by the scheme. The serial number and model number uniquely identify the boiler and are used when orderingspares from the manufacturer and in the main boiler log book. An important boiler fitting is the safety valve. Its function is to protect the boiler shell from. In Europe, matters relating to the suitability of safety valves for steam boilers are governed bythe European standard EN In the US and some other parts of the world, such matters.
Click Here To Download Now. With technical advancements and increasing emphasis on safety of ship and crew, various boiler mountings and boiler safety devices have been introduced. When a boiler installation is done on board a ship, it can only be considered as complete, when different types of boiler mountings, including boiler controls, are fitted to ensure safe and efficient operation of a gas boiler. Related Reading: Choosing a marine boiler while designing a ship. It usually is non-return type of valve directly mounted on the steam space of the boiler shell. The body is made of cast iron, and the valve seat is of gunmetal.
A boiler is a closed vessel in which water is heated, vaporized and converted into steam at a pressure higher than the atmospheric pressure. The heat energy required for steam generation is produced by burning fuel in the furnace. So these are the important boiler accessories and mountings we will discuss today:. What are the boiler mountings? Boiler mountings are those mechanical appliances which are considered essential for operating a boiler smoothly and safely which are usually mounted on the surface of a boiler. The water level indicator located in front of the boiler in such a position that the level of water can easily be seen by the attended.
BOILER MOUNTINGS AND ACCESSORIES. Boiler Mountings. These are the fittings, which are necessarily mounted on the boiler itself and mandatorily.
Boiler mountings and accessories are required for the proper and satisfactory functioning of the steam boilers. The boiler mountings are fittings which are mounted on the boiler for its proper functioning. Mountings are water level indicator, safety valve, pressure gauge, etc.
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In the last session, we had discussed Lamont boiler , Benson boiler , Cochran boiler , Babcock and Wilcox boiler in a detailed way whereas, in today's session, we will discuss What is a Boiler? Selection of a boiler, Essentials of Good boiler, Classification of a boiler, Diagram of the boiler, Boiler Mountings, and Boiler Accessories in a detailed way. The working principle of the boiler is very simple.
As the name implies, this valve is used to assure safe working of the boiler. When the pressure of steam inside the boiler drum increases beyond the safety valve, it may cause damage to the pressure part, or even a severe accident. It can be prevented by allowing the surplus steam to escape to the atmosphere, by means of the safety valve. Hopkinson and Co. It consists of a vertical pipe A, bottom end of which is flanged and through this flanged end it is mounted on the mounting blocks of the boiler. B is the Gun metal valve, resting over the valve seat C. Valve seat C is fixed on the top of the pipe A by means of a securing ring and screw.
A boiler is used to generate steam at a desired pressure and temperature by transferring heat produced by burning fuel to water to change it to steam. It is a term applied to that device which generates steam at minimum pressure of 3. Heat from the gases produced by combustion is transferred to water, which is then converted to steam. Water tube boiler When water is contained inside the tubes called water tube which are surrounded by flames and hot gases from outside, then the boilers are named as water tube boilers. They are safe, quick steaming, flexible in construction and operation. These boilers are extensively used because they can be built for high pressure and large evaporative capacities.
Cochron Boiler. Lancashire Boiler. Babcock – Wilcox Boiler. Functioning of different mountings. Functioning of different Accessories.
Mainly seven (7) mountings are required and essential to a Boiler: 1. Water level indicator. (Water gauge). 2. Main steam stop valve. 3. Pressure gauge. 4.