2008 Vol.41 No.2
IHI ENGINEERING REVIEW
2008 Vol.41 No.2
- 3-D Laser Radar Level Crossing Obstacle Detection System
- Development of New Anti-Corrosion Method (IECOS) for Marine Steel Structures
- Development of Low-Volatile Coal Firing Burner
- Development of Next-Generation Gas Turbine Control Systems
Operation Results of IHI Flue Gas Desulfurization System
– Unit No.1 and 2 (600MW×2) of Wangqu Thermal Power Station for Shanxi Lujin Electric Power –
- Development of Traceability Management System Using IC Tag
- Proposal of Distributed Architecture Based on JAUS and RT-Middleware
- Water-Flooded Oil-Free Screw Compressor GP Series
HISAMITSU Yutaka, SEKIMOTO Kiyohide
NAGATA Kouichirou, UEHARA Minoru, OTA Eiichi
Level crossing obstacle detection systems have been developed to prevent a train colliding with an object such as a vehicle stuck on the crossing. Increasing safety consciousness, however, has prompted railway companies to install more advanced systems than those that have been used conventionally. To cope with the demand for new devices, IHI developed a 3-D laser radar level crossing obstacle detection system which is not influenced by weather conditions or sunshine conditions, and which can accurately detect objects within the area of the level crossing in real time. Reliable detection can be achieved by installing just a single monitor that can cover the whole area of the crossing, thus surpassing the conventional system in sensing the obstacles in the crossing.
SUZUKI Yasunobu, AKAMINE Kenichi
KANESAKA Kaoru, IMAZEKI Masanori
Marine steel structures are important infrastructures, so effective anti-corrosion methods are essential for maintenance management. IHI has developed a new anti-corrosion method, IECOS, which consists of two methods, "Electro-deposition" and "Cathodic protection." IECOS can achieve a long-lasting service life by providing super-long-term anti-corrosion for the marine structures. In the first stage of application, the electro-deposition film is increased to adequate thickness with an external electric power supply. As a result, the required current density for corrosion protection can be sharply reduced compared with the conventional cathodic protection method. IECOS was confirmed to be an excellent anti-corrosion method by tank tests and marine tests applied to steel pipe piles.
WATANABE Shinji, TAMURA Masato
SUKO Toshiyuki, FUJIMORI Toshiro, SUDA Toshiyuki
Bituminous coal has been increasingly used as the main fuel for pulverized coal (PC)-fired boilers for thermal power plants in Japan, and demand for bituminous coal has also increased worldwide. Consequently, PC-fired boilers are now required to use not only bituminous coal but also low-volatile coals like semi-anthracite and anthracite. However, low-volatile coal is difficult to burn stably in existing PC-firing boilers. IHI has developed a new burner that can burn low-volatile coal without using assist oil. The aim of the new burner is increasing emissions of volatile components by recirculating high-temperature furnace gas into the burner. This resulted in improved stable combustion.
YAMAGAMI Junji, OKAJIMA Kazumichi
KOYAMA Osamu, YAMAMOTO Shuzo, OONUKI Hirokazu
For combined cycle gas turbine power plants, the gas turbine power plant control system has developed, as a result of extending the existing system which can control only the gas turbine. The developed system can control entire plants which incorporate waste heat recovery boilers, steam turbines, and auxiliary machines such as pumps. On the other hand, for medium and small gas turbines, a compact control system has also been developed to provide miniaturization and low price. Optimal control systems have become applicable according to the scope of target. The outlines of these systems are described.
TSUMITA Yoshimitsu, TAKAMI Akira
TODA Koji, FUJINO Yoshihisa, FUJII Keita
An IHI flue gas desulfurization (FGD) system was completed for 600 MW×2 coal-fired thermal power plant at Wangqu Lujin, China, in August 2006, which was one of largest-capacity plants in Shanxi province. This was constructed as the first FGD system in the province and is now operating smoothly and demonstrating superior SO2 removal efficiency with high operational reliability. The conventional design with proven technologies was applied to cope with the local stringent environmental regulations. IHI supplied the basic design for a local engineering company, which was in charge of the details and civil engineering design for the FGD system.
TAKATA Kenichi, HOSOYA Masashi
In recent years, quality control has become more and more essential, and the importance of product traceability has been growing for use in manufacturing, inspection and circulation records. Therefore, IHI has developed a traceability management system using IC tags, and the system is expected to be widely used in the future. The system comprises a process inspection management system, which manages inspection records of each production process, and a circulation record management system, which manages the circulation records after shipping. This system is applied to the production and distribution of medical equipment. This paper outlines the features of these systems.
INAMURA Wataru, FUJII Masakazu
MURAKAMI Hiroki, TOMIZAWA Masaaki
For development of a robot system, a modular approach by standardized technologies is expected to improve the compatibility and reusability of robotic functions. It is expected to contribute to industry progress because robot systems will be developed more rapidly and flexibly by integrating various modules in the near future. This paper proposes a distributed architecture for robot systems using standardized technologies. We constructed the distributed architecture based on both JAUS (Joint Architecture for Unmanned Systems) as a specification for the application layer and RTM (Robot Technology Middleware) as a development framework. The architecture was applied to mobile robots. The experimental results show the effectiveness and reliability of the proposed architecture.