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The heat transfer ability of the fin tube is greatly improved compared with the traditional tube

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The heat transfer ability of the fin tube is greatly improved compared with the traditional tube

Date:2017-06-27 Author: Click:

After the fins are cut out, the heat flux density Q increases significantly, so the heat transfer ability of the finned tube is greatly improved compared with the circular tube. The heat transfer capacity of finned tube increases with the increase of fin to fin thickness, decrease with the increase of a, but the effect of high heat transfer capacity of the finned tube fin than fin thickness. Therefore, when machining finned tube by cutting extrusion method, we can get bigger wing height and suitable wing thickness by adjusting process parameters, so as to get the best heat transfer effect of finned tube.


The structure of the parts is improved to improve the performance of the parts. In order to save the cost of maintenance, the design of the parts of the imported equipment is also inadequacies. We have improved its structure, such as the cover rolling machine. The core rod is the main parts of capping machine, each minute reciprocating movement up and down about 150 times, the appearance of the geometric size of length Zomm, diameter 10, center of a through hole is wonderful mm (string movement used), synchronous machine movement in the central hole of the rod up and down movement of the 150 /min, used to correct the aluminum cover from the analysis, the overall structure, the design is reasonable, but the Shanghai 4mm movement through holes so that the length of Zomm and quasi. The strength of the machine bar has been greatly reduced. The broken bar phenomenon often occurs in the use. It causes great difficulty to the parts manufacturing. After purchasing 213 yuan l pieces, we have made the following improvements. The core rod is made into a solid axis, and the shape of the outer shape is the same as that of the original. Only a hole with a diameter of 8.5 deep and 25 at the lower end is used to install a new small machine core. Make assembly small movement to the new head on.


With the small spring 8 between the core rod and head, in order to ensure the movement of aluminum and a bottle cover. After the improvement, the cost is 60 yuan per piece, the use effect is very good, no longer appear broken rod phenomenon, also greatly reduce the difficulty of manufacturing, reduce the cost of manufacturing. Through the practice of more than ten years, we have gained some understanding of the imported equipment. When spare parts are made in China, they not only improve the general parts, but also improve some key parts, so as to save costs and bring huge economic benefits to the enterprises. Energy efficiency significantly, the average efficiency of 10%, up to 30%; improve the mechanical power, reduce friction and wear, reduce the temperature; maintain the accuracy of the equipment, prolong the equipment maintenance cycle, reduce the number of oil lubricating oil; rust corrosion, excellent anti-oxidation function; economic benefit, no pollution and no side effect, the real green products.


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