JP2018176868A5

JP2018176868A5 -

Info

Publication number: JP2018176868A5
Application number: JP2017075915A
Authority: JP
Filing date: 2017-04-06
Publication date: 2019-07-04
Anticipated expiration: 2037-04-06

Description

上記の課題を解決するために以下の構成を採用する。
この発明の第一態様によれば、浮体は、液化石油ガスを加圧状態で貯蔵する燃料タンクと、前記燃料タンクから前記液化石油ガスが供給されるサービスタンクと、前記燃料タンクの前記液化石油ガスを前記サービスタンクに圧送する第一昇圧ポンプと、前記サービスタンクからの前記液化石油ガスによって駆動される主機と、前記サービスタンクの前記液化石油ガスを前記主機に圧送する第二昇圧ポンプと、前記サービスタンクの前記液化石油ガスを前記主機に供給する供給ラインと、前記主機に供給された前記液化石油ガスの一部を前記サービスタンクに還流させる還流配管と、前記サービスタンク内の圧力が前記燃料タンク内の圧力よりも高くなるように調整する圧力調整部と、を備える。
このようにポンプによって燃料タンクからサービスタンクに液化石油ガスを圧送し、圧力調整部でサービスタンク内の圧力を調整することで、燃料タンク内における液化石油ガスの沸点よりもサービスタンク内における液化石油ガスの沸点を高くすることができる。そのため、サービスタンクから供給ラインを介して主機に供給された高温の液化石油ガスの一部が還流されてサービスタンクに流入する際に、蒸発することを抑制できる。 In order to solve the above problems, the following configuration is adopted.
According to the first aspect of the present invention, the floating body includes a fuel tank for storing liquefied petroleum gas in a pressurized state, a service tank to which the liquefied petroleum gas is supplied from the fuel tank, and the liquefied petroleum for the fuel tank. A first booster pump for pumping gas to the service tank, a main unit driven by the liquefied petroleum gas from the service tank, and a second booster pump for pumping the liquefied petroleum gas of the service tank to the master device; A supply line for supplying the liquefied petroleum gas of the service tank to the main machine, a reflux piping for recirculating a portion of the liquefied petroleum gas supplied to the main machine to the service tank, and a pressure in the service tank and a pressure regulator adjusted to be higher than the pressure in the fuel tank.
As described above, the liquefied petroleum gas is pumped from the fuel tank to the service tank by the pump, and the pressure in the service tank is adjusted by the pressure regulator, so that the liquefied petroleum gas in the service tank is higher than the boiling point of the liquefied petroleum gas in the fuel tank. The boiling point of the gas can be raised. Therefore, it is possible to suppress evaporation when part of the high temperature liquefied petroleum gas supplied from the service tank to the main unit through the supply line is returned to flow into the service tank.

Claims

A fuel tank for storing liquefied petroleum gas under pressure;
A service tank to which the liquefied petroleum gas is supplied from the fuel tank;
A first booster pump for pressure-feeding the liquefied petroleum gas of the fuel tank to the service tank;
A main engine driven by the liquefied petroleum gas from the service tank;
A second booster pump for pumping the liquefied petroleum gas of the service tank to the main machine;
A supply line for supplying the liquefied petroleum gas of the service tank to the main machine;
Reflux piping for refluxing a part of the liquefied petroleum gas supplied to the main unit to the service tank;
A pressure adjustment unit that adjusts the pressure in the service tank to be higher than the pressure in the fuel tank ;
Floating body with a.

The reflux piping is immersed in the liquefied petroleum gas in the service tank at a portion including the downstream end thereof, and the liquefied petroleum gas is refluxed by the reflux piping, and the liquefaction in the service tank The floating body according to claim 1, further comprising a heat exchange unit that exchanges heat with oil gas.

The floating body according to claim 2, further comprising a cooling device that lowers an outer surface temperature of the service tank.