Patent ID: 9534736
Date: 2017-01-03
CPC Classifications: F17C

Claim:
1. An apparatus for supplying gas comprising: a storage tank, which contains the gas as cryogenic liquefied gas, in evaporated form with controlled pressure to at least one consumer whose requirements concerning the pressure and a mass flow of the gas vary strongly; a high-pressure pump for the liquefied gas connected to the storage tank, which delivers liquefied gas from the storage tank and increases the pressure of the liquefied gas; a motor for adjusting the mass flow of the liquefied gas delivered by fine high-pressure pump; an evaporator following the high-pressure pump for the liquefied gas increased in pressure; a pressure control valve following the evaporator for the evaporated gas, to whose output the consumer can be connected; a first controller whose control variable is the pressure of the evaporated gas behind the pressure control valve and whose correcting variable acts on the pressure control valve; a second controller whose control variable is the pressure of the gas between the high-pressure pump and the pressure control valve and whose correcting variable acts on the motor for the mass flow.