The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2019
Filed:
Jul. 05, 2017
Mitsui Engineering & Shipbuilding Co., Ltd., Tokyo, JP;
Kazushige Ohta, Tamano, JP;
Makoto Kounosu, Tokyo, JP;
MITSUI E&S MACHINERY CO., LTD., Tokyo, JP;
Abstract
The present invention prevents a gas generated by evaporating a low-temperature liquid from remaining in an internal space of a booster pump and enhances efficiency of discharge and suction. A reciprocating booster pumpincludes a cylindera pistona suction check valveand a discharge check valveThe cylinderhas a suction portand a discharge portThe suction portsuctions a low-pressure, low-temperature liquid to an inside. The discharge portboosts the low-temperature liquid and discharges the low-temperature liquid to an outside. The pistonreciprocates in an internal spaceof the cylinder. The suction check valveopens and closes a suction flow passagebetween the internal space and the suction port. The discharge check valveopens and closes a discharge flow passagebetween the internal space and the discharge port. The suction check valve is configured such that if a relative pressure at the internal space establishing a pressure of the low-temperature liquid before being suctioned into the cylinder as a criterion is higher than a predetermined pressure, the suction check valve closes.