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Q538 Steam Plants II U.S.C.G. Merchant Marine Exam Third Assistant Engineer Illustrations: 6 . 25. Before placing the jacking gear in operation on a main turbine unit, you must always ensure that _____. o (A) the main salt water circulating pump is operating • (B) the main lube oil system is operating o (C) the condensate system is operating
May 02, 2019· In the power plant steam turbine is a prime mover and on this prime mover blades and vanes are mounted which help in expansion of steam. So, all these mountings have their individual center of mass now when this center of mass does not lie on the central axis of the shaft, they create an imbalance of centrifugal forces while rotating.
Turbine Shaft Upper Cover Svartisen Power Plant, Norway. Francis turbine Spiral casing, stay ring and stay vanes Materials: – Structural steel • Carbon steel • HSMA (High Strength Micro Alloy) • Heat treatment steel – Example: • S355- - (DIN) • St52- - (EN) Weight …
Feb 24, 2012· The shaft of the turbine is coupled with an electrical generator. The output of the generator is collected through electric power cables. Working of Wind Turbine. When the wind strikes the rotor blades, blades start rotating. The turbine rotor is connected to a high-speed gearbox. Gearbox transforms the rotor rotation from low speed to high speed.
Disadvantages of gas turbine power plant. 1. 66% of the power developed is used to drive the compressor; the gas turbine unit has a low thermal efficiency. 2. The running speed of the gas turbine is in the range of (40, 000 to 1, 00,000 rpm) and the operating temperature is as high as 2000 0C, for.
Apr 01, 2020· Terry Whalebone/CC-BY 2.0. Turbines convert the kinetic energy of a moving fluid or gas into rotational energy that can be used to drive a dynamo and generate electricity. Usually, the source of the kinetic energy is steam, although it can sometimes be water. In a typical turbine setup, fuel is consumed at one end of the system to generate heat.
moisture erosion and to increase plant efficiency. 7.3.2 Main Turbine 7.3.2.1 System Description The main turbine consists of one high pressure turbine and three low pressure turbines coupled to a single shaft. The four turbines that comprise the main turbine are coupled to the generator and exciter; they serve as the prime mover for these
Nov 29, 2020· Q9 – _____is a main part of the chassis. glass; frame; wheel; shaft; Q10 – Main component of chassis are. Wheel; U-joint; Glass; Brake; Q11 – Identify which is not a type of frame. Integral frame; Semi – Integral frame; Half – Integral frame; Conventional frame; Q12 – The _____ is the power plant of vehicle. Engine; Shaft; Clutch; Frame
Feb 19, 2017· Cone Crusher MAINSHAFT. The mainshaft is of high grade forged steel, annealed for stress relief. It is tapered to gauge for head center fit. The bottom of the shaft is fitted with a polished bronze step bearing. The journal for the spider bearing is formed by a sleeve shrunk on the shaft on the 51, 60 and 84-in. crushers.
Nov 23, 2017· Main Parts of a Gearbox 1. Main Shaft. It is the shaft used as an output shaft in a gearbox, this shaft is usually kept parallel to the layshaft and in front of the clutch shaft or engine output shaft, the change of gear usually occur through this shaft as it is usually connected to the gear lever. 2. Clutch Shaft
Jun 20, 2014· From massive wind farms generating power to small turbines powering a single home, wind turbines around the globe generate clean electricity for a variety of power needs.. In the United States, wind turbines are becoming a common sight. Since the turn of the century, total U.S. wind power capacity has increased more than 24-fold. Currently, there's enough wind power capacity in the U.S. …
the stem or shaft of a leaf. guard cells. cells surrounding stomata that, through osmosis, regulate the openings and closings of the stomata ... The two main types of plants that are nonvascular plants are: mosses and liverworts. A _____ is a rootlike structure of nonvascular plants that is usually one cell thick. rhizoid. Plants are classified ...
Water turbine is an important part of hydropower plants. And as for water turbine, the main shaft seal is its indispensable component. But the main shaft seal is easy to fail, and its safety cannot be guaranteed, so it is a problem to be solved urgently in the current domestic hydropower industry.
Feb 24, 2012· The main components of a gas turbine power plant are the compressor, regenerator, combustion chamber, gas turbine, alternator, and starting motor. Compressor Air compressor used in a gas turbine power plant is mainly of the rotary type. The air filter is …
Shaft generators on board ships are driven by the main engine to supply power to the mains. The mains have to be supplied with constant voltage and frequency by the shaft generator whilst the speed of the main engine changes, i.e. when the vessel travels at different speeds or if the propeller speed strongly varies in heavy seas.
The definition of a stem is the main stalk of a plant. (noun) An example of stem is the part that holds up the petals on... Dictionary Menu. ... by analogy, the shaft of a feather. The stem of an apple or a cherry. noun. 2. 0 (linguistics) The main part of an uninflected word to which affixes may be added to form inflections of the word.
The main exciter has a stationary field and a rotating armature directly connected, through silicon rectifiers, to the field of the main alternator. The pilot exciter is a shaft driven permanent magnet generator having rotating permanent magnets attached to the shaft and a 3-phase stationary armature, which feeds the main exciter's field ...
ADVERTISEMENTS: Read this article to learn about the following six components of hydro power plant, i.e., (1) Forebay and Intake Structures, (2) Head Race or Intake Conduits, (3) Surge Tank, (4) Turbines and Generators, (5) Power House, and (6) Trail Race and Draft Tube. 1. Forebay and Intake Structures: As the name suggests forebay is […]
Propulsion system, propulsion plant. A system which provides thrust to propel the ship. It consists of propulsion machinery and the auxiliary systems needed to operate them, all the equipment to transmit propulsion power into thrust and all the requisite monitoring and …
A wind power plant will use a step-up transformer to increase the voltage (thus reducing the required current), which decreases the power losses that happen when transmitting large amounts of current over long distances with transmission lines. ... The drivetrain on a turbine with a gearbox is comprised of the rotor, main bearing, main shaft ...
A centrifugal pump has two main components: I. A rotating component comprised of an impeller and a shaft II. A stationary component comprised of a casing, casing cover, and bearings. The general components, both stationary and rotary, are depicted in Figure B.01. The main components are discussed in brief below. Figure B.02 shows these parts on a
The main shaft of the engine equips with a compressor and its turbine, and both coupled with the combustion is called a gas generator. A separately rotating power turbine uses to power the helicopter rotors. You can add design flexibility by rotating the power turbine and …
The main shaft seal in a hydro-turbine is one of the key components of the turbine system. Ideally, the seal should seal completely but due the size of typical units such an arrangement is prohibitively expensive. The main shaft seal therefore functions not to eliminate leakage but more to control the leakage to an acceptable amount.
The plant shaft 4/5/11 is located about two kilometers north of the main site on the Katernberger road in the district Katernberg. The plant shaft 6/9 was located about one kilometer south of the main site between the streets Gelsenkirchen road, Im Natt and Hallostraße.
10.2.3 The gearbox. The GB reduces rotation speed from the input shaft to the output shaft by a factor of about 30:1 and increases available torque by about the same amount. It is designed to not to be overloaded. The unit most be maintained fairly well balanced (weights adjusted to keep motor and GB loads about the same on up/downstroke) to ...
Aug 04, 2012· Part of the shaft work is used to drive the compressor through an internal mechanism. This form of the gas turbine is used mainly for electric power generation and as power plants for vehicles such as tanks and even cars. The US M1 Abrams tank uses a gas turbine engine as the power plant.
Q515 Gas Turbine Plants U.S.C.G. Merchant Marine Exam First Assistant Engineer Illustrations: 10 . Choose the best answer to the following Multiple Choice Questions. 1. In the operation of a marine propulsion gas turbine, kinetic and thermal energy required to drive the main propeller shaft are extracted by the _____. • (A) power turbine
Nov 30, 2011· The Importance of Shaft Alignment. A major part of keeping equipment running smoothly involves regular maintenance and upkeep and ensuring that the machinery is kept lubricated and properly aligned. When shafts or belts on rotating equipment are misaligned, the risk of costly, unplanned machine downtime rises dramatically.