Pressure vessel

Abstract

The invention relates to a pressure vessel. In order to improve sealing properties, the present invention provides a pressure vessel comprising: a boss part which is arranged in a cylindrical shape and has a through-hole formed in the center part thereof in the vertical direction, and a boss flange part; the boss flange part is integrally expanded towards the outer side of the radius direction along the circumferential direction at the lower part of the boss extension part, and extends the through hole in the vertical direction at the inner side of the radius direction; a liner part which is configured in a container type, has an accommodation space communicating with the through hole, accommodates a fluid therein, and has an upper part which is insert-molded along a lower surface of the boss flange part so as to be sealed and coupled to the lower surface of the boss flange part; and the sealing part is combined with a boundary area between the lower part of the boss flange part and the upper part of the lining part in a sealing manner so as to prevent the fluid accommodated in the accommodating space from leaking.

Description

technical field [0001] The present invention relates to a pressure vessel, and more particularly, to a pressure vessel with improved airtightness. Background technique [0002] Generally, in order to store various gases such as hydrogen, nitrogen, and natural gas, and discharge the stored gas as needed, a gas storage container is required. In particular, the storage density of the gas in the container is low, so it needs to be stored under high pressure, and the use of a pressure container is essential in such a high-pressure environment. [0003] For example, in alternative fuel gas vehicles including fuel cell vehicles or compressed natural gas vehicles, storage systems have different structures depending on the storage method of the fuel gas. Currently, the storage method in the form of compressed gas is being affected by the unit price, weight and simplicity of the storage system. Attention. However, since the fuel in the gaseous state has a low energy storage density,...

AI Technical Summary

Problems solved by technology

[0007] Here, in order to solve the above-mentioned problems, plastic fasteners for bonding the plastic liner and the metal-phase nozzle boss have been used in the past, but this has caused other problems that it is difficult to install fasteners inside the plastic liner. question

[0008] As another method, a method of inserting the nozzle boss into the plastic liner by providing a groove on the nozzle boss is also used, but it is somewhat difficult to achieve a completely bonded state.

Images