Horizontal cold deep drawing equipment for steel inner container of pressure vessel and cold deep drawing method thereof

Abstract

The invention discloses horizontal cold deep drawing equipment for a steel inner container of a pressure vessel and a cold deep drawing method thereof. The horizontal cold deep drawing equipment comprises a female die and a male die matched with the female die, the rear end of the female die is fixedly connected with a thinning die, and the male die, the female die and the thinning die are coaxially and horizontally distributed. The cold deep drawing method mainly comprises the steps that a mechanical arm clamps a blank and places the blank at the front end of the female die, the male die moves under supporting of a supporting trolley and is pressed into the blank, the mechanical arm loosens the blank and returns, the male die carries with the blank and is sequentially pressed into the female die and the thinning die, a workpiece is shaped, and an unloaderis clamped on the male die to unload the shaped workpiece. The horizontal cold deep drawing equipment for the steel inner containerof the pressure vessel and the cold deep drawing method thereof are derived from the application and popularization project of the Ministry of Communications of China, the application and popularization of carbon fiber full-winding hydrogen fuel storage and transportation equipment for new energy automobile, and the project number is ZCKJCD-201804. The thickness of the wall of the drawn steel inner container can be adjusted in a targeted mode, the wall thickness is uniform, the bottom is naturally formed, the wall thickness is small, the air leakage risk is zero, lightweight of a gas cylinderis effectively achieved.

Description

technical field [0001] The invention belongs to the technical field of manufacturing high-pressure gas cylinders, and in particular relates to a horizontal cold-drawing device for a steel liner of a pressure vessel and a cold-drawing method thereof. Background technique [0002] With the continuous improvement of environmental protection standards, the economy, safety, and installation standards of CNG vehicles are also gradually improving. The standard stipulates that the weight of the gas cylinder cannot exceed 5% of the weight of the whole vehicle. [0003] At present, the mainstream molding process of CNG winding bottle liner in the market is to use hot-rolled or cold-drawn tubes to form by hot spinning to close the mouth and close the bottom. The wall thickness of the steel pipe has a large deviation. In order to ensure the minimum design wall thickness, the overall weight of the steel cylinder liner is relatively heavy. And the wall thickness of the bottom formed by ...

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Problems solved by technology

The wall thickness of the steel pipe has a large deviation. In order to ensure the minimum design wall thickness, the overall weight of the cylinder liner is relatively heavy.

And the wall thickness of the bottom formed by closing the bottom is thicker, which increases the weight of the inner tank

At the same time, there is a risk of gas leakage due to the unfused bottom of the bottom of the gas cylinder formed by hot spinning

Moreover, the current liner deep drawing process is vertical deep drawing, and the height of the factory building limits the stroke of the deep drawing machine, thereby limiting the length of the steel liner product of the pressure vessel

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