Generally speaking, the diameter of the spiral steel tube can be divided into outer diameter, inner diameter, and nominal diameter. The outer diameter of the pipe of the pipe is the outer diameter of the pipe of the spiral steel pipe is represented by the letters D. The size and wall thickness of the outer diameter after the additional outer diameter, such as seamless steel pipes with 108 outer diameter, 5mm in wall thickness, expressed in D108*5, plastic pipes are also expressed, and plastic pipes also Use the outer diameter, such as DE63, other such as reinforced concrete pipes, cast iron pipes, galvanized pipes, etc. are expressed by DN. The nominal diameter is generally expressed in the design drawings. A standard, which is also more nicknamed, is the specification name of the pipe (or pipe).
The nominal diameter of the tube is different from its inner diameter and outer diameter. For example, there are several types of spiral steel tube mail with a diameter of 100mm 102*5, 108*5. 108 is the outer diameter of the tube. Therefore, the inner diameter of the steel pipe is (108*5-5) = 98mm, but it is not exactly equal to the difference between the outer diameter of the steel pipe. The specification name of a tube diameter, in the design drawing, must be used in the nominal diameter. The purpose is to determine the structure size and connection size of the structure of the pipe, pipe, valve, flange, pads, etc. according to the nominal diameter. If the outer diameter representation is used in the design drawings, the pipeline specifications should also be made to indicate the nominal diameter and thick wall of the nominal diameter of a pipeline.
How to transport fluid spiral steel pipes how to achieve energy saving
The conveying fluid pipe seized the seasonal changes with decreased temperatures in late autumn, and took a reasonable start -stop cooling tower to run the fan and the work measures used to cool down the pump room to effectively reduce the power consumption. According to the calculation of the professional management department, only this item can reduce the cost of nearly 100,000 yuan per month. In daily production and operation, there are 15 (sets) cooling tower aircraft running at the same time, and the total power is as high as 1600kW per hour, which is a veritable electrician. Because the steelmaking system and the continuous casting system have special requirements for the supply of water medium, especially when smelting boutique steel types, the control of water agency temperature difference plays a vital role in stable product quality and the development of new steel species.
In addition, you can also use the changes in outdoor temperature to reasonably turn on and stop fans to achieve the purpose of reducing power consumption and saving energy. Take the initiative to contact each production line user, in -depth understanding of the specific requirements for water temperature, determine the most reasonable range, and achieve the purpose of reducing costs and efficiency while meeting the needs of production. Make full use of the characteristics of seasonal changes and decreased outdoor temperature at night, and adopt the method of tracking the data of the temperature change data of the water medium at the production site in real time, and adjust the operating fan in a timely manner to minimize the number of fans. For a week, the number of fans running has been halved, and the power consumption has also decreased by half.
