Integrated oil filling pipe flaring structure

Abstract

The invention provides an integrated oil filling pipe flaring structure which comprises an oil filling port, an integrated flaring structure and an oil filling circulating pipe. The oil filling port is assembled at the upper part of the integrated flaring structure and is welded with the integrated flaring structure, the oil filling circulating pipe is positioned on the outer side of the integrated flaring structure, one end of the oil filling circulating pipe is communicated with the integrated flaring structure and is welded with the integrated flaring structure, and the other end of the oilfilling circulating pipe is communicated with a carbon tank; the integrated flaring structure is formed by machining a main pipe straight pipe through a flaring technology, and the eccentricity of the integrated flaring structure is 0 to 5 mm. The integrated oil filling pipe flaring structure is reasonable in structural design, an oil pipe flaring is omitted, the welding process of the oil pipe flaring and the main pipe is omitted, the risk of welding leakage is eliminated, the risks that due to welding slag existing at the welding position, oil filling smoothness is reduced, and the corrosion resistance of the welding position is poor are eliminated, meanwhile, the process is simplified, the production efficiency is greatly improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of oil filling pipes, in particular to an integrated oil filling pipe flaring structure. Background technique [0002] With the continuous progress of human society, more and more cars have entered people's lives, and China has become the world's largest car producer and largest car consumer. In recent years, China's automobile industry has developed rapidly and its industrial strength has been continuously enhanced. As an important part of automobiles, automobile fuel pipes are responsible for the function of automobile fuel transmission. Its reliability and safety are also continuously accepted by major OEMs and many consumers. challenge. [0003] At present, there are many problems in the oil filling pipes on the market: (1) The existing stainless steel oil filling pipes are connected by welding the oil pipe flaring and the main pipe, and the main pipe needs to be slightly flared before welding, and the ...

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Problems solved by technology

[0003] At present, there are many problems in the oil filling pipes on the market: (1) The existing stainless steel oil filling pipes are connected by welding the oil pipe flaring and the main pipe, and the main pipe needs to be slightly flared before welding, and the process is cumbersome and complicated , there is bound to be a risk of leakage when using the welding process; (2) due to the limitations of the welding process, there will be a certain amount of welding slag inside the fuel filler pipe, which will affect the smooth performance of refueling; (3) due to the high temperature during welding, it will Change the chemical structure of stainless steel, thereby greatly reducing the corrosion resistance around the weld

[0004] Chinese patent application number is CN201721397611.X discloses a kind of automobile filling pipe, by separating the mouth of the filling pipe from the body of the filling pipe to form a split type automobile filling pipe, when processing the filling pipe of the automobile, the mouth of the filling pipe and The main body of the filling pipe is processed and shaped to reduce the difficulty of the processing technology. It does not solve the problems of welding leakage wind caused by the welding process of the filling pipe, welding slag in the welding place, which affects the smooth performance of refueling, and the risk of poor corrosion resistance of the welding place.

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