摘要:
A gas filling system (1) includes a gas tank (30); a gas filling device (2) that fills gas into the gas tank (30); and a controller (24) that calculates a temperature increase ΔT and a pressure increase ΔP in the gas tank (30) during a predetermined period of time (t seconds) that elapses from a start of gas filling. The controller (24) selects a filling rate map (Ma, Mb) from a prepared filling rate map group on the basis of the calculated temperature increase ΔT and the calculated pressure increase ΔP. The gas filling device (2) carries out gas filling using the filling rate map selected by the controller (24).
摘要:
Excess flow valve devices, which are responsive to pressure and flow conditions in a bi-directional system, including structures to restrict flow in one direction through openings of a stopper of an excess flow valve based on balancing forces from at least a spring and a frictional force caused by the flow. Bi-directional system employing at least one pressure delayer responsive to pressure and flow impulses to protect a tank valve of a storage tank or a regulator during a refill phase or a discharge phase.
摘要:
Methods and systems for reducing a pressure of compressed natural gas and for delivering natural gas are disclosed. A regulator comprising a vortex tube may be used to reduce the pressure of compressed natural gas while a temperature thereof is also reduced. The temperature reduction associated with a pressure drop in the compressed natural gas is achieved by throttling the gas at constant enthalpy from 3,000 PSIG to 150 PSIG through the regulator. At least one heat exchanger may be utilized to increase the temperature of the compressed natural gas to a temperature suitable for injection delivery. A pressure reducing regulator may be used to further reduce a pressure of the gas to about 45 PSIG for delivery to an end user.
摘要:
В установке дозированной инжекции криогенной жидкости дозирующая емкость 2 сообщена с дозирующим клапаном 9. Вход испарителя криогенной жидкости 15 через линию подачи криогенной жидкости 14 в испаритель 15, клапан подачи криогенной жидкости 13 на испаритель 15 и постоянно открытый клапан выдачи криогенной жидкости 3 сообщен с питательной емкостью 1. Один выход по газу испарителя 15 сообщен с входом ресивера 10, а другой его выход по газу через подогреватель 16 и дюзу 17 - с зоной вокруг выходного отверстия дозирующего клапана 9. Выход ресивера 10 через клапан подачи газа наддува 11 сообщен с газовой полостью дозирующей емкости 2. Ресивер 10 снабжен датчиком давления газа наддува 12. Система управления дозированной инжекции криогенной жидкости содержит датчик скорости линии разлива 19, задатчик порогового значения скорости линии разлива 20, фотодатчик 18, а также схемы сравнения и совпадения, соединенные с датчиками и клапанами для обеспечения работы клапанов. Использование изобретения позволит обеспечить возможность гарантированной дозированной инжекции криогенной жидкости при скоростях линии разлива как ниже, так и выше порогового значения.
摘要:
The invention relates to a composite structure vessel and transportation system for liquefied gases and methods of manufacture. More specifically, the system provides a composite vessel for operative connection to a track trailer system for transporting at least two gas products such as carbon dioxide and liquid nitrogen within the composite vessel at different times. The composite vessel includes an inner liner, a composite layer including a plurality of resin-impregnated fiber layers, a thermal insulation layer, and an outer protective layer.
摘要:
Objective and Task - To provide a gas supply system that can reduce the capacity of the pipe necessitating purging for the purification accompanying the installation/removal processes upon replacement of the filled container and inspection of the piping unit (referred to hereinafter as "container replacement and other processes"), minimize the feed gas amount evacuated through purging, and maintain stability by swift processing of the feed gas filled container by means of simple structure. Means of Solution - Gas supply system characterized in that pipe Lo having on-off valve Va1 located in the proximity of the container valve 1a, and on-off valve Vb, located in the vicinity of the primary side of the pressure regulation unit 3 at both ends is provided, and at the same time characterized in that purging process unit 5 comprising the decompression process unit and the inert gas supply unit is connected via on-off valve Vc to pipe La connecting the container valve 1a and the on-off valve Va.
摘要:
A cryogenic liquid storage system and method in which cryogenic liquid is stored within an active cryogenic liquid storage tank and one or more passive cryogenic liquid storage tanks. Headspace regions of the passive cryogenic liquid storage tanks are connected to the active cryogenic liquid storage tank and the active cryogenic liquid storage tank is refrigerated to collapse the headspace vapor within the active cryogenic liquid storage tank causing the flow of headspace vapor from the headspace regions of the passive cryogenic liquid storage tanks to the active cryogenic liquid storage tank. The increased head of liquid produces a pressure differential that drives liquid from the active cryogenic liquid storage tank back to the passive cryogenic liquid storage tanks. In such manner, refrigeration applied to a single active cryogenic liquid storage tank can be used to refrigerate the passive cryogenic liquid storage tanks to prevent the venting of headspace vapor from all of the cryogenic liquid storage tanks.
摘要:
A fuel gas supply system of a ship is provided for supplying fuel gas to a high-pressure gas injection engine of a ship, wherein LNG is extracted from an LNG tank of the ship, compressed at a high pressure, gasified, and then supplied to the high-pressure gas injection engine.