Triple & Quadruple Expansion Engines & Boilers, and Their ManagementSimpkin, Marshall, 1902 - 290 pages |
Common terms and phrases
acid adjusted admitted advantage air-pump amount arrangement asbestos ash-pit become bilge boiler bolts bottom brass bucket Calcic carbonate carbonic acid cause cent chamber clean coal coils condenser connected corrosion crank cylinder deposit diameter economy effect efficiency electrogens evaporator exhaust feed feed-heater feed-pumps filter fire fire-bars fire-grate fitted forced draught fresh water friction fuel furnace gases gear grate heating surface high-pressure inch increase iron joint low-pressure lubricants marine engines metallic packing mineral oil motion muntz metal natural draught obtained ordinary oxide oxygen packing-rings pass patent pipe piston piston valves piston-rod plates pressure prevent pump quantity rate of combustion reduced result rings scale screw sea water shaft slide valve space specific gravity spring steam steam-tight steel stokehold sulphate of lime supply taken tank temperature tion triple expansion engines tubes valve-gear vessel waste water-tube water-tube boilers zinc
Popular passages
Page 266 - Heat being applied to the inclined tubes and steam formed, the mixture of water and steam rises to the high end and flows through the uptake headers and horizontal return tubes to the steam and water drum, the path of both water and steam being short and direct ; the water evaporated in the tubes...
Page 205 - The saline constituents of sea water, however, do undoubtedly play an important part in a more active form of corrosion, by helping to excite galvanic action between the iron in the plates and any foreign metal or impurities present, an action which is also materially aided by want of homogeneity in the metal, by particles of rust, by mill scale, by wrought and cast iron or steel in contact with each other ; or even by the different amount of work, such as hammering or...
Page 213 - In a voltaic couple which may consist of, say, a plate of zinc and a plate of copper immersed in a...
Page 180 - ... Milton, Chief Superintendent Engineer of Lloyd's, I was able to obtain samples of deposit from all parts of the boilers, and full particulars of the case. The steamer was a large one trading between Liverpool and Boston, averaged twelve days on the voyage, and was fitted with ordinary compound engines. She had three double-ended boilers, with three plain furnaces at each end, and three combustion chambers in each boiler. The furnaces were plain in one length and connected at the back end to the...
Page 185 - These solid particles of calcic carbonate, calcic sulphate, etc., are heavier than the water, and, as the oil becomes more and more loaded with them, a point is reached at which they have the same specific gravity as the water, and then the particles rise and fall with the convection currents which are going on in the water, and stick to any surface with which they come in contact, in this way depositing themselves, not as in common boiler...
Page 266 - Extending across the front of the boiler and connected to the upper ends of the front headers by short tubes is a horizontal steam and water drum of ample dimensions. As the upper ends of the rear headers are also connected to this drum by horizontal tubes, each section is provided with an inlet and outlet for steam and water.
Page 61 - Each section is therefore composed of two working blocks, babbit lined (5), and two guide blocks (5a). The joints between the blocks in one section are at right angles to those in the other section, thus breaking joint. The blocks are regulated by springs which merely keep the parts in place when the steam is shut off, as when steam is applied, the steam pressure regulates and sets the packing.
Page 206 - ... corrosion, by helping to excite galvanic action between the iron in the plates and any foreign metal or impurities present ; an action which is also materially aided by want of homogeneity in the metal, by particles of rust, by mill scale, by wrought and cast iron or steel in contact with each other ; or even by the different amount of work, such as hammering or bending, undergone by different parts of the same plate ; and in all of these cases the galvanic action set up causes rapid oxidation...
Page 61 - Each section is composed of two working blocks (5) and two guide blocks (5a). The joints between the blocks in one section are at right angles to those in the other section, thus breaking joint. The blocks are regulated by springs, which merely keep the parts in place when the steam is shut off, as when steam is applied the steam pressure regulates and sets the packing. A ball joint (3) on one side, and follower (9) with springs on the other, give the packing free play and keep it steam-tight, thus...
Page 184 - Having thus entered the boiler, the minute globules of oil, if in great quantity, coalesce to form an oily scum on the surface of the water, or, if present in smaller quantities, remain as separate drops; but show no tendency to sink, as, their specific gravity being...