Pressure control method for high-pressure regulator to prevent internal leak, and high-pressure shut-off valve

Abstract

Proposed are a pressure control method for a high-pressure regulator to prevent internal leak, and a high-pressure shut-off valve so as to minimize an internal leak, due to high-pressure gas remaining in a high-pressure fuel line when a valve of a gas storage tank is shut off, caused by a pressure difference between a front end portion and a rear end portion of the high-pressure regulator introducing or discharging high-pressure gas. Accordingly, the convenience for connecting work is provided, the high safety is ensured, and the high-pressure regulator is used with the high reliability.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The instant application is a divisional application of U.S. application Ser. No. 16 / 369,907 filed on Mar. 29, 2019, which claims priority under 35 USC § 119 to Korean patent application No. 10-2018-0141114, filed Nov. 15, 2018, and Application No. 10-2019-0008748, filed Jan. 23, 2019, the entire disclosures of which are incorporated herein by reference in their entirety.BACKGROUND OF THE INVENTION1. Field of the Invention[0002]The present invention relates to a high-pressure regulator, and more particularly, to a pressure control method for a high-pressure regulator to prevent internal leak, and the high-pressure shut-off valve so as to minimize an internal leak, due to high-pressure gas remaining in a high-pressure fuel line when a valve of a gas storage tank is shut off, caused by a pressure difference between a front end portion and a rear end portion of the high-pressure regulator introducing or discharging high-pressure gas, and faci...

AI Technical Summary

Benefits of technology

This patent describes a method and device for controlling pressure in high-pressure fuel lines, which can help prevent leaks and minimize risks associated with the use of high-pressure gas. The invention includes a high-pressure regulator and a shut-off valve, which work together to reduce the pressure difference between the front and rear of the regulator, and to minimize residual high-pressure gas in the fuel line when the gas tank valve is shut off. The invention also ensures high airtightness at the inlet port connected to the regulator, which increases safety and reliability when supplying high-pressure fuel. Overall, this patent aims to improve the safety and reliability of high-pressure fuel systems and facilitate connections between the regulator and the fuel line.

Problems solved by technology

However, related art document 2 is for removing the pressure of each line connected to the regulator, so the leakage, which is generated therein due to the pressure difference between the front end portion and the rear end portion of the regulator, cannot be prevented, in other words, the pressure inside the regulator cannot be regulated.

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