control device is a fluid pipe, its basic function is to connect or cut off the pipeline medium circulation, to change the flow direction of medium, adjust the pressure and flow of the medium, to protect the normal operation of the pipeline and equipment. With the development of modern science and technology, the valve in the industrial, construction, agriculture, national defense, scientific research and people's life increasingly common use, has become indispensable to all areas of human activity, general machinery products. As a set of modern petrochemical device just need tens of thousands of valve, a modern residential building also needs thousands of valves. Increase of energy consumption due to valve use or inappropriate selection problem gradually aroused people's attention. Throttling valve is one of the functions, the entrance of the line, The export of pump) Install throttle Industrial Valves, by changing the valve opening to adjust the medium inside the pipeline flow or pressure. Throttling is the essence of pipeline resistance to change, change of pipeline characteristic curve of gradient, realize the purpose of the change point are speed regulating valve is another function, variable speed regulation is under the condition of the pipeline characteristic curve is constant, change by variable speed pump performance curve, so as to change the way of the adjustment of the pump working point. For a quadratic relationship with load torque and rotational speed of centrifugal pump, variable speed regulating energy saving benefit is the most significant. Variable speed adjusting range shoulds not be too big, usually the minimum speed is not less than 50% of the rated speed, the general is 10% ~ 70%. When the speed is less than 50% of the rated speed, the working efficiency of the pump down significantly. To consider when choosing a variable speed adjusting device technical and economic aspects of factors, comprehensive analysis and comparison of merit, to achieve the maximum economic benefits. Considering the current speed regulating device level of production, supply, maintenance capacity and save energy requirements, should adjust measures to local conditions, choose a speed control device, put should save electrical energy savings. From storage of trap steam airtight container automatically discharge frozen water, at the same time to keep fresh steam leakage of an automatic control device, if necessary, also allows the flow of steam at predetermined by. Steam is widely used in industrial and agricultural production and living facilities, no matter in the steam pipeline system, or the use of steam for heating, drying, heat preservation, disinfection, cooking, concentration, heat transfer, such as heating or air conditioning process produced in the process of the condensate, need to be excluded by a steam trap is clean, and do not allow the steam leak out. Steam trap is important attachment using the system, the pros and cons of its performance, if the normal operation of the system, the thermal efficiency of the equipment to improve and reasonable use of energy plays an important role. Choose good trap is an important energy saving measures. Therefore, according to the different working conditions to choose the appropriate trap. In the need to immediately remove the condensate occasions, such as turbine, steam pump, such as main steam, steam engine should not be used had a cold trap, such as pulse type steam trap and thermal static bellows type steam trap. Water less than 15% rated maximum displacement, should not choose pulse type steam trap, because in this condition, the steam from the loss of drain hole easily. Intermittent operation of indoor steam heating equipment and pipeline, should choose good property of exhaust steam trap, such as inverted bucket type or hot static type of trap. Trap outdoor work, should not be commonly use mechanical type of trap. When must choose, frost protection measures. In this paper, the keyword search: more Industrial Valves pump product information
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