(II) The improvement of purchasing power of residents and the increase of consumer awareness are conducive to the popularization of well-used submersible pumps. Since the 21st century, China’s macro economy has entered a new round of rising periods, the economy continues to grow rapidly, and residents’ income and purchasing power continue to increase. The relatively high price of submersible pumps for wells, improvement of residents’ living standards and improvement of consumer awareness are conducive to the popularization and utilization of submersible pumps for wells. The increase in income also enables residents to have greater payment capacity to select more cost-effective wells. Submersible pump products.
(III) National Industrial Policy Supporting the Development of Well Submersible Pump Industry In recent years, China has vigorously promoted agricultural mechanization and industrialization of agricultural machinery. To this end, it has promulgated the “Opinions of the Central Committee of the Communist Party of China on Strengthening the Overall Development of Urban and Rural Areas to Further Consolidate the Foundation of Agricultural and Rural Developmentâ€. , "The State Council's Opinions on Promoting Agricultural Mechanization and Sound and Rapid Development of Agricultural Machinery Industry", "Twelfth Five-Year Plan for the Development of National Agricultural Mechanization (2011-2015)," and "Twelve Five-Year Plan for National Rural Drinking Water Safety Project" Planning and other policies, vigorously promote the construction of drinking water safety. The use of submersible pumps as well as universal water extraction machinery will benefit from the immense push of these industrial policies.
(D) The need for water conservancy construction in China contributes to the development of the well-used submersible pump industry. On December 23, the State Council submitted the State Council's work on the use and funding of national finance water conservancy funds for consideration at the twelfth session of the Standing Committee of the 12th National People's Congress. The report of the situation shows that in the first three years of the “Twelfth Five-Year Planâ€, the total national water conservancy funds invested 1.3261 trillion yuan, an average annual increase of 19%.
In 2011, water conservancy was the priority area for national infrastructure construction, and a stable growth mechanism for financial water fund investment was gradually established. The funds come mainly from two channels, the general public budget and the government fund budget. The largest head comes from the general public budget. In 2011-2013, the national general public budget allocated water resources of 942.3 billion yuan, accounting for 71% of the total water conservancy investment. The remaining funds come from the government fund budget. In 2011-2013, the national government fund budget allocated 358.3 billion yuan for water conservancy, accounting for 29% of the total water conservancy investment.
(E) The national implementation of energy-saving emission reduction policy is conducive to the well-being of the submersible pump industry. China has always implemented the energy-saving emission reduction policy, the pump is a large consumer of electricity. According to calculations, 20% of the country’s electricity generation is consumed by pumps, so the improvement of pump efficiency has obvious benefits for energy conservation and emission reduction. In August 2012, the State Council issued the “Twelfth Five-Year Plan for Energy Saving and Emission Reductionâ€, and in November of the same year, the Ministry of Finance, the National Development and Reform Commission, and the Ministry of Industry and Information Technology released the “Implementation Rules for the Implementation of Energy-Saving Products Huimin Engineering High-Efficiency Energy-Saving Clean Water Centrifugal Pumpsâ€. Both are vigorously promoting energy conservation and emission reductions. This is conducive to the survival of the fittest of the well submersible pump industry. It will enable the submersible pump manufacturers in the industry with certain R&D strength and production scale, and products that meet the direction of high efficiency, energy saving and environmental protection to obtain better development opportunities.
(6) China's well submersible pump products have better cost-effective advantages and broad export prospect. China's well submersible pump products still have obvious cost-effective advantages. The sales prices of European and American companies' products are several times that of similar export products in China. With the development of wells in the submersible pump industry in China and the improvement of production technology, the technical content and quality of products have been continuously improved, and the export prospects of well-used submersible pumps are promising.
II. Problems encountered in the development of submersible pumps and their solutions (1) There is still a certain gap between the overall technical level of the industry and foreign advanced enterprises. There are many production enterprises in the well submersible pump industry in China. The vast majority of enterprises have small-scale production operations. Extensive, insufficient investment in R&D, relatively backward processes and equipment, no economies of scale, poor product quality stability, and low risk resistance. The problem can be solved by increasing the production and sales scale, technical level, and innovation ability of well production submersible pump manufacturers in China.
(II) Upward fluctuations in raw material prices and rising labor costs In recent years, the prices of major raw materials such as enamelled wires, silicon steel sheets, and copper parts required for production of submersible pumps have fluctuated, and the labor costs have continued to rise, giving submersible pumps to wells. The development of the industry brings certain adverse effects. It can be solved through technological improvement and large-scale production, continuously reducing production costs, increasing market acceptance and brand awareness.
(III) Rising Exchange Rate of RMB Pressure on Exports In recent years, the continuous appreciation of the renminbi has weakened the price advantage of submersible pump exports in China. It can reduce production costs by constantly optimizing itself; increase the technological research and development of products and increase the technological content of products; actively participate in the international market competition and increase the share taken up in the international market.
Third, the future development trend of the submersible pump industry With the gradual popularization of the well submersible pump and the expansion of the application field, the well submersible pump must adapt to more different environmental requirements. With the accumulation of market feedback data, CAD, CFD and other computer-aided design, auxiliary manufacturing and auxiliary testing software applications, as well as the continuous application of new materials and new processes such as fluorine plastics, lining plastics, rubber linings, and spray ceramics, well diving Pumps are gradually becoming more efficient, energy-saving, and environmentally friendly. details as follows:
(1) The technological innovation will drive the use of new processes and materials in the production of submersible pumps. For example, traditional casting processes have evolved into more advanced stainless steel stamping welding processes. The core parts of stainless steel stamping and welding multi-stage pump are made of stainless steel plate and stamped with a die. It has the advantages of high reliability, good sealing, high precision, etc. Its hydraulic performance and pump efficiency are generally superior to well-used submersible pumps produced by casting process. Stainless steel stamping welding process is the trend of the development of well submersible pumps in the future.
(b) The design will be more efficient, energy-saving and environmentally friendly. For example, the design of oil-filled motors has evolved toward more environmentally friendly water-filled motors. The medium filled with oil-filled submersible motor is filled with mechanical oil, while the medium filled with water-filled submersible motor is filled with water. One of its advantages is zero pollution to the water body and it is more environmentally friendly. In addition, with the increasing popularity of frequency conversion technology in motor design, future well submersible pumps will be more efficient and energy-efficient.
(III) The integrated design is developing in the direction of the detachable modular design, that is, the modular combination of the motor and the pump body and other components, which facilitates the removal and replacement of the damaged components to achieve the purpose of prolonging the service life of the pump and reducing the use cost.
The finned tube is to improve the heat exchange efficiency. By adding fins on the surface of the heat exchange tube, the outer surface area (or inner surface area) of the heat exchange tube is increased, so as to achieve the purpose of improving the heat exchange efficiency. Such a heat exchange tube . Usually used for heat exchange between liquid and gas.
Finned tube is a heat exchange element. As a heat exchange element, finned tubes usually work under high-temperature flue gas conditions for a long time. For example, the finned tubes usually used in boiler or harsh environments, high temperature and high pressure, and in a corrosive atmosphere. This requires that the finned tubes should have high anti-corrosion properties, Anti-wear properties, lower contact resistance, higher Stability and anti-dusting ability.
There are many types of finned tubes, and new varieties are constantly emerging. According to the classification of processing technology, there are extruded fin tube; high frequency welded finned tubes; rolled formed finned tubes; suit formed finned tubes ; cast finned tubes; tension wound finned tubes; Inserted tubes.
According to the shape of the fins, there are square finned tubes; circular finned tubes; spiral finned tubes; longitudinal finned tubes; corrugated finned tubes; spiral serrated fins Helical Serrated Finned Tubes; pin-shaped finned tubes; integral plate-shaped finned tubes; inner finned tubes.
According to whether the fin material of the finned tube is the same as that of the base tube, it can be divided into: single metal finned tube, bimetallic composite finned tube.
Single metal finned tubes are classified by material into copper finned tubes; aluminum finned tubes; carbon steel finned tubes; stainless steel finned tubes; cast steel finned tubes.
Finned Tube,Extruded Fin,Brown Fin Tube,Longitudinal Finned Tube
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