Hi friend! Today I would like introduce for you : "Operation of generators on ships"
Generator Engine (G / E) have the function, the task of generating electricity to supply electrical appliances on board. Speaking of light, we often think of a combination of diesel (diesel engine) hybrid generator (Alternator)..
101 Important Things to Check While Starting Fuel Oil Purifier on Ships???
Every engine room machinery system needs systematic step-by-step starting and stopping procedures to ensure smooth running. The number of things to consider while handling ship’s machinery system, depends on aspects such as equipment type, making etc.
An outline of the Maritime Labour Convention 2006 (MLC 2006)
Dear friends! The world currently has about 1.2 million seafarers working on ships, transporting some 90% of global merchandise trade. Facing freight demand is increasing, raising the quality and ensure the rights and obligations of the crew working on the sea is a world problem being very interested. So, on 02/07/2006, at the 54th Conference of the ILO, with the participation of nearly 100 member states, has agreed to build the Maritime Labour Convention 2006 (MLC 2006).
Operating procedures bilge separator machine USH-20 of the company Taiko Kikai
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Types of Mechanical Measuring Tools and Gauges Used on Ships
Machinery onboard ships require regular care and maintenance so that their working life and efficiency can be increased, and the cost of operation, which includes unnecessary breakdowns and spares, can be reduced. For different types of machinery and systems, various measuring tools, instruments and gauges are used on a ship.
Water pumps are used for dewatering reasons decreasing the downtime from huge rain events. The common applications of these pumps include buildings, wells, boost application, circulation of hot water, sump pits, protection of fire systems, etc
Thus, this is all about water pumps which are frequently used in construction fields for removing surplus water as well as dewatering. Because of heavy rains, the flow of water can increase & water pumps let you supply the water rapidly to reduce downtime. These pumps are appropriate for applications like electric, hydraulic, gas-powered, and otherwise manual.
These pumps are vast addition to our life because they make possible a huge variety of industrial, agricultural and household tasks. But, the variety of water pumps in the marketplace is so adaptable and plentiful that selecting the correct pump appropriate for your requirements is challenging.
Water pumps are classified into two types namely positive displacement and centrifugal. These pumps are mainly designed for supplying water from one location to another constantly.
Types of Pumps
Centrifugal Water Pump
Centrifugal pumps are designed with a rotating impeller which can be used for supplying the water into the pump and force the discharge flow. These pumps come in several types which includes trash, submersible, and standard models. By using these pumps, all types of liquids can be pumped with low-viscosity. And also these pumps work fine with thin fluids & gives high flow rates.
Considerations
These pumps are applicable in several applications like building as well as the water system. These pumps are used to provide water supplies for buildings and well-matched with pneumatic systems where the no-suction lift is necessary. The main purpose of these water pumps is to pump water from wells in homes & to increase water pressure in intake lines. Centrifugal pumps offer a nonstop pressure supply for fire guard systems, and they can supply like sump pumps in horizontal otherwise vertical configurations.
Centrifugal pumps are horizontal to numerous general problems. These may require liquid circulation to stop overheating which is caused by low supplies. These types of pumps must be prepared to work properly. As a head of the positive suction system is very less while selecting the pump, it can consequence to cavitations, a situation wherever air bubbles form close to the impeller, then leads to shock signals within the water pump. At last, wear of the impeller of the pump can be degenerated by delayed solids within the fluid.
Positive Displacement Water Pump
Positive displacement pumps supply a set amount of flow throughout the mechanical contraction and development of a stretchy diaphragm. These pumps are applicable in several industries that control high-viscosity fluids wherever responsive solids may be there. These are suggested for the applications wherever a combination of high pressure and low flow is required.
Considerations
Sometimes, these pumps are also called rotary pumps, and these are very competitive because of the fact that they remove air from the lines and therefore get rid of air leakage. These are also efficient while dealing with high-viscosity fluids. The main disadvantage of these pumps is that they need extremely little clearance among the revolving pump & the external edge of the unit. Consequently, the revolution must happen at extremely slow speeds. When the water pump is functioned at high speeds, then the fluid can ultimately decrease the efficiency of the pump.
If we reside in a city or town, we almost don’t think how the water is supplied to our residents every day. Small villages also frequently supply a set-up of pipes to transfer water for every home within the region. All we require to recognize is how to open the valve at the sink. Because the internal working is not visible, and the water supply is not dependent on the neighbors down the road. Every home has owned well and electromechanical system to draw the water from well and supply to the home. This article discusses an overview of the water pump and its working, types and their applications.
What is Water Pump?
The water pump can be defined as a pump which uses the principles like mechanical as well as hydraulic throughout a piping system and to make sufficient force for its future use. They have been approximately in one structure otherwise another because of early civilization. At present these pumps are utilized within a wide range of housing, farming, municipal, and manufacturing applications.
Water Pump Working Principle
The working principle of a water pump mainly depends upon the positive displacement principle as well as kinetic energy to push the water. These pumps use AC power otherwise DC power for energizing the motor of the water pump whereas others can be energized other kinds of drivers like gasoline engines otherwise diesel.
The water pump is a portable device and can be applied in several household applications. These pumps are used for pumping the huge amount of water from one place to another. The main purpose of a water pump is versatile. A quality pump which can be selected carefully may be perfect for draining water from a low flooded region, refilling the swimming pool, and bathtub, circulating pesticides otherwise fertilizers.
The collection of water pumps are very large, therefore, while selecting a strong and consistent one, one should think about the requirement.
These pumps are classified into different types namely lift pump, a force pump, axial pump, and radial piston-pump. From these pumps, lift and force pumps can operate manually otherwise with the help of an engine.
Types of Piston Pumps
Lift Piston Pump
In this type of pump, the piston above stroke can draw fluid with the help of a control device which is named as valve into the below portion of the cylinder.
On the below stroke, fluid flows through control devices which are arranged in the piston into the higher portion of the cylinder. After that on the upstroke, fluid can be released from the higher portion of the cylinder through a spout.
Force Pump
In this type of pump, the piston pumps upstroke can draw fluid throughout an inlet valve to the cylinder (tube). On top of the downstroke, the fluid level can be discharged via an exit valve into the outlet tube.
Axial Piston Pump
This is pump is a PD (positive displacement) pump and it has several pistons within a circular array of a tube block. This block can be driven to turn its symmetry axis with an important shaft which is associated with the pumping pistons. These pumps can be used like an automotive air conditioning compressor, a separate pump, otherwise a hydraulic motor.
Radial Piston Pump
This pump is one kind of hydraulic pump, and the working pistons expand within a radial track symmetrically in the region of the drive shaft, in disparity in the direction of the axial piston pump.
The piston pump is strong, as well as simple devices. These pumps are made with a chamber, a piston, and a couple of control devices. These pumps function by flowing downward into the chamber, thus reducing the media within a hand pump. When the air pressure surpasses from the opening valve spring, then the reduced media can be sent throughout the open exit valve. As the piston is drawn back-up, then it releases the inlet valve & shuts the outlet valve, thus suction can be used to draw in extra media for compression. This article discusses an overview of piston-pump, working, types, etc
What is a Piston Pump?
The piston pump can be defined as it is a positive displacement pump. These pumps use a piston, diaphragm, otherwise plunger for moving liquids. These pumps use check valves as the input and output valves. The general piston-pump is a rotary pump which uses a wheel or revolving shaft for operating the piston.
The revolving component can be connected to a shaft from its center, and this shaft can be connected to the piston. When the revolving component twists, it runs the shaft as well as piston down to pull it back.
Piston Pump Working
The piston pump working is similar to PD pumps. Because they work with the help of the pumping mechanism force to increase the volume of the liquid. These pumps can use the power from power sources.
These pumps include more than one piston with a set of control devices. The duplex pump includes two pistons as well as two controlling devices. Similarly, a triplex pump includes three pistons as well as three controlling devices. It is very important to check the controlling devices on both sides to ensure that the flow of liquid direction at both sides is flowing or not.
These pumps are single otherwise double acting pumps. Double acting pumps involve two sets of controlling devices & liquid on both ends. This lets the pump to complete a pumping cycle by flowing in one direction to other. When the piston is taking in one direction, then it will exhaust at another side. This pump needs solo action versions for flowing in both directions for completing a cycle.
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