A pump is a device that moves fluid (liquid or gas) or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy.
Pumps operate through some mechanism (typically reciprocating or rotating), and consume energy to perform mechanical work to move the fluid. Pumps are operated by a variety of energy sources, including manual operation, electricity, engines, or wind power.
A wide range of processes and applications require the use of pumps for their operations in various industries. They can also be used in commercial and domestic applications. A great variety of high-pressure pumps are available in different sizes, designs, and features. Pumps play a significant role in the production process and are indispensable for smooth operations.
It is widely used in shipbuilding, oil exploration, loaders, etc. Ship production reached 15,000 tons in 2008, and the deadweight tonnage accounted for 21% of the world market. To ensure the normal navigation or mooring of ships and meet the needs of crew and passengers, each ship must be equipped with a certain number of marine pumps that can play a corresponding role. Marine pumps are one of the important auxiliary machines. According to incomplete statistics, among various marine auxiliary machinery and equipment, the total number of marine pumps of various types and purposes accounts for about 20%-30% of the total marine machinery and equipment. The price of marine pumps is included in the cost of marine equipment. The proportion is also relatively large. In the total cost of construction, marine pumps account for about 4%-8% of the cost of ship equipment. Generally, the purchase of marine pumps for a medium-sized ship can reach more than 10 million yuan.
Pumps have different purposes, different conveying liquid media, different flow rates, and different head ranges. The application industries are power plant, steel mill, chemical plant, water plant, smelter, paper mill, pump factory, pharmaceutical factory, etc.
Jiahe County was established in 1639, covering an area of 699 square kilometers, governing 9 towns and 1 township, with a population of 420,000. It is one of the counties with the smallest area and the highest population density in the province.