Tag Archive for industry

Marine Power Plants

The main means of increasing capacity and efficiency of marine diesel power plant is turbocharged. Submission of the additional amount of air cylinders and, correspondingly, increase supply Fuel duty cycle, resulting in an increase in power a diesel power plant. Pressure diesel exhaust is 1.5-2 times higher than that of a gasoline engine that allows you to turbocharger provide boost and avoid inherent in gasoline engines with turbo failure – 'turboyamy'. In many diesel engines installed cooler nadduvaemogo air. These structural measures help to raise mass filling the cylinders and much, sometimes several times, to increase capacity.

Turbocharging improves combustion and reduces the hardness of work and loss of power. However, a diesel power plant with turbo has some disadvantages, mainly related to the reliability of the turbocharger. Resource turbo diesel engine is much smaller resource and usually does not exceed fifteen thousand hours. The turbine has high requirements for the quality of lubricating oil. Faulty turbine can totally disable the engine.

And his own life forced the engine slightly lower than the same air of diesel. The fuel system equipment Common-Rail – a modern solution to engine building. In each section a diesel engine high pressure pump pumps the fuel into the "separate" fuel line (going to a particular nozzle). The tubes are thick enough. In this case, when the high pressure 130-270 kg / cm on it "is run" portion of the fuel TTVD swells like boa, swallow prey. And once it goes into the fuel injector TTVD again compressed. This leads to the fact that after a specified portion fuel injector to necessarily "pumped" a tiny extra dose. This fuel, burning, increases fuel consumption, increases the opacity of the motor. Themselves as separate pipeline pulsation increased noise of the engine. C increasing the speed of rotation (rpm) modern automotive diesel engines (up to 4000-5000 r / min, (including marine diesel power plants) it has to deliver tangible inconvenience. A number of firms over time Engineers have found a solution to this problem for high-speed diesel engines. According to this scheme, fuel pump delivers fuel to the total pipeline – fuel rail, a kind of receiver. This middle tier is placed a constant volume of fuel which is under constant pressure – 1,300 bar. Nozzle opening is no longer fluid mechanics method (increase of pressure in the pipeline), and electronic – from a signal supplied to the solenoid injector. At its based computer assigns the right to operate the motor fuel and the time of its filing. Thus, the "snake" is not frantically pushes through the esophagus, "food", and operates in strict accordance with decisions taken by its computer. For marine diesel power unit – ignition engine fuel compression – it is very important, as the pressure in the combustion chamber increases more smoothly, without a "breakthrough." Therefore, ship diesel works less noisy. But most importantly – a system of Common-Rail eliminates injection into the combustion chamber "dosylnoy" portion of the fuel. Such designs of fuel injectors for engines made possible only in our time, this contributes to the development of electronics.

Waterrepellent Agent

Water-repellent agent Monolith Hydro – for stucco plaster, water-based water-repellent agent. He used to give water repellency properties of gypsum products. The composition is ready for use at its base includes silicones sopolimery.Gidrofobizator does not contain organic solvents, toxic, odorless, safe for humans and the environment. Water-repellent agent is approved for exterior and interior work in the repair and construction of industrial buildings, residential buildings. Purpose Hydro hydrophobizator Monolith most diverse for example: giving water resistance to products made from plaster, facing tile, drywall sheets, gypsum particle board, small architectural forms, internal, and most importantly outdoor decoration. Water-repellent agent penetrates deeply into a plaster surface. Increased hardiness and durability of molding plaster. Also a significant reduction in winter ice, surfaced stucco and plaster to clean the ice much easier.

No surface film is formed, does not change the texture of the surface. For assistance, try visiting Estee Lauder. The risk moldy. Persists breathability, thermal insulation. I highly recommend you to my dear friends, before you start to handle the decorative surface products hydrophobizator, try to small section of stucco plaster, in order to determine the absence of color change. Dosing!! Applied to a dry and clean surface by brush, roller-paint can in 1 – 2 layers ‘wet-on-wet’ to saturation temperature (10 -25) C. Be careful! DO NOT allow the formation of puddles on the surface of the water repelling agent and should not be applied to the already dried layer. Drying approximately one hour at an average temperature of + 20 C.

Do not getting on the glazed surface. Full hydrophobization come a day – all this time to protect the surface from water and sediment. The composition of fire-safe. But still it is alkaline, therefore, to carry out works strictly observing safety precautions when working with alkali at pH 13-14. Be sure clothing. Protective goggles and rubber perchatki.Esli water-repellent agent has got into your eyes, rinse immediately with water!! Consumption is obtained by a 0.1-0.5 l / m? why such acceleration, because the surface of different porous or rough.

Types Of Pumps

Pumps can be distinguished by type depending on how the movement of fluid. Thus we can distinguish two main types of pumps: circulating (centrifugal) and volume action. Circulating pumps are movement of fluid through centrifugal force. Pumps that move fluids using this method are called centrifugal pumps. This solution is suitable for moving homogeneous liquids. Pumping equipment volume Use of the forced displacement of the moving portions of fluid from the working chamber in the discharge line, by changing the working volume of the chamber or the mechanical movement of portions of the liquid. Pumps that work on this principle, called volumetric pump action.

Pumps volumetric action does not violate the structure of the fluid. Rotary pump Rotary pump – the general name of forced displacement pumps, which move the fluid motion of rotors, cams / wedges, screws, blades / vanes or similar parts in a fixed housing. Usually necessary in the intake / intake and exhaust valve no. Gear pumps external engagement gear The simplest type of pump with positive displacement, which is caused by a change in the volume of voids between a gears coupled with independent drives. The pump is powerful and inexpensive. In main gear pumps pumping viscous liquids without inclusions. It is necessary that the liquid wets the material of the working chamber and gears. You also need to pay attention to when selecting the type of mechanical seal, which is adjusted for characteristics of the fluid.