Patents Assigned to NAIGAI CHEMICAL PRODUCTS CO., LTD.
  • Patent number: 9239282
    Abstract: A metal pipe corrosion monitoring device includes a steam introduction unit for introducing thereinto steam flowing through a metal pipe; and a corrosion testing unit provided in the steam introduction unit, characterized in that the steam introduction unit is configured to generate condensed water by condensing some of the steam to create a simulated environment similar to an actual environment in the metal pipe and discharge the condensed water above a predetermined water level to the outside. The corrosion testing unit has one or more contact members that contact with a water line region around a water surface of the condensed water in the steam introduction unit, a water phase region on a condensed water side and a vapor phase region on a steam side, and is configured to be able to measure an electric resistance of the one or more contact members.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: January 19, 2016
    Assignee: NAIGAI CHEMICAL PRODUCTS CO., LTD.
    Inventors: Haruhisa Miyazaki, Katsumasa Murata, Kazuo Marugame, Masaki Yoshida, Yusuke Suetake
  • Publication number: 20150153264
    Abstract: The corrosion-resistant test device installed in a flow path of a system which needs a corrosion-resistant test, the corrosion-resistant test device including: a chamber to which a test liquid is supplied; a test piece mounting member for mounting a test piece rotatably and immovably in the chamber; a nozzle body having a reference surface opposed to a test surface of the test piece mounted on the test piece mounting member and connecting the chamber to the flow path; and means for moving the nozzle body with respect to the test surface, wherein the means for moving the nozzle body is configured to move the nozzle body toward the test surface of the test piece so as to allow the reference surface to come into contact with the test surface of the piece and to coordinate the test surface with the reference surface.
    Type: Application
    Filed: May 30, 2013
    Publication date: June 4, 2015
    Applicant: NAIGAI CHEMICAL PRODUCTS CO., LTD.
    Inventors: Masanobu Matsumura, Kazuo Marugame
  • Publication number: 20140306726
    Abstract: A metal pipe corrosion monitoring device includes a steam introduction unit for introducing thereinto steam flowing through a metal pipe; and a corrosion testing unit provided in the steam introduction unit, characterized in that the steam introduction unit is configured to generate condensed water by condensing some of the steam to create a simulated environment similar to an actual environment in the metal pipe and discharge the condensed water above a predetermined water level to the outside. The corrosion testing unit has one or more contact members that contact with a water line region around a water surface of the condensed water in the steam introduction unit, a water phase region on a condensed water side and a vapor phase region on a steam side, and is configured to be able to measure an electric resistance of the one or more contact members.
    Type: Application
    Filed: October 30, 2012
    Publication date: October 16, 2014
    Applicant: NAIGAI CHEMICAL PRODUCTS CO., LTD.
    Inventors: Haruhisa Miyazaki, Katsumasa Murata, Kazuo Marugame, Masaki Yoshida, Yusuke Suetake
  • Publication number: 20120145187
    Abstract: The present invention provides a surface treatment method for suppressing the formation and growth of superheated steam oxide scale on an iron-based metal surface exposed to superheated steam, comprising treating said iron-based metal surface with a surface-treatment agent which comprises a polyoxy saturated aliphatic mono- or di-carboxylic acid or a salt thereof and an amine compound represented by the following formula (I): Z(CH2CH2NH)nCH2CH2NH2??(I) wherein Z represents H or OH or NH2 group, and n is an integer of 0-5.
    Type: Application
    Filed: July 1, 2010
    Publication date: June 14, 2012
    Applicants: NAIGAI CHEMICAL PRODUCTS CO., LTD., CHUBU ELECTRIC POWER CO., INC.
    Inventors: Yoshiyuki Abe, Masamichi Miyajima, Kazuo Marugame, Masaki Yoshida, Yuji Shimizu