Mechanical pressure regulator for cryogenic fluids

Patent metadata

Field	Value
Publication number	US-12547192-B2
Application number	US-202418632250-A
Country	US
Kind code	B2
Filing date	Apr 10, 2024
Priority date	Apr 11, 2023
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

A pressure regulator for fluids is described. The pressure regulator (100) has a main body (108) including a control valve (112,113) actuated by a control element (119) responding to a pressure signal generated by sensor means (118) to maintain a set pressure in the transfer line. The main body (108), the control valve (112,113), the control element (119) and the sensor means (118) are contained in an interior space (124) enclosed by a housing (123). A pressure below atmospheric pressure prevails in the interior space (124).

First claim

The invention claimed is:

1 . A pressure regulator for fluids, wherein the pressure regulator comprises:
a main body including a control valve actuated by a control element responding to a pressure signal generated by sensor means to maintain a set pressure in a transfer line, wherein the main body, the control valve, the control element and the sensor means are contained in an interior space enclosed by a housing, and wherein the transfer line is a multiwalled transfer line, wherein the housing is connected with an outer tube of the multiwalled transfer line such that a space enclosed between the outer tube and an inner tube of the multiwalled transfer line is fluidly connected with the interior space of the housing such that a pressure below atmospheric pressure prevails in the interior space.

2 . The pressure regulator according to claim 1 , wherein the interior space and the ring space are evacuated.

3 . The pressure regulator according to claim 1 , wherein the pressure regulator is enclosed in a gas-tight envelope whose interior is filled with a gas whose boiling point is below the fluid temperature.

4 . The pressure regulator according to claim 1 , wherein the pressure regulator is installed between an upstream section and a downstream section of the transfer line.

5 . The pressure regulator according to claim 1 , wherein the sensor means is a membrane.

6 . The pressure regulator according to claim 5 , wherein the sensor means further comprise a spring exerting a spring force on the membrane, wherein the spring is contained in the housing of the pressure regulator.

7 . The pressure regulator according to claim 6 , wherein the pressure regulator is provided with a pressure means, which exerts adjustable forces on the spring so that different set pressures of the pressure regulator can be selected.

Assignees

• Nexans

Inventors

• Gunzel Gerald
• Egerer Ralf

Classifications

• F17C2260/033

  by enhancing insulation · CPC title

• F17C2250/043

  Pressure · CPC title

• F17C2223/0161

  cryogenic, e.g. LNG, GNL, PLNG · CPC title

• F17C2221/033

  Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG · CPC title

• F17C2221/012

  Hydrogen · CPC title