Robot-based Assembly of Hydrogen Tube Fittings for large-scale
Electrolyzers
- Patrick Adler ,
- Daniel Syniawa ,
- Lukas Christ ,
- Bernd Kuhlenkoetter
Abstract
Hydrogen is one of the main pillars in the transition to renewable
energy and can be used in particular for buffering and storing energy.
Electrolyzers are needed to produce sustainable, green hydrogen. Today,
these electrolyzers are mainly manufactured by hand. An electrolyzer
plant consists of two main com-ponents, the stack in which the actual
electrolysis takes place and the balance of plant that ensures the
operation of the stack. Different electrolysis technologies have
essential similarities in the balance of plant so that automation can
achieve particular optimization potentials at this point.
The use of automation technologies such as industrial robots is intended
to bring this production to series maturity. For this reason,
large-scale electrolysis plants are analyzed with regard to their
design, the combination of different elec-trolysis technologies and the
connection technology used. A significant propor-tion of the necessary
assembly steps are cable, hose and tube connections, which automation
technology has not yet been able to assemble in a process-safe and
economical manner.
In this paper, the process of tube connection using tube nuts is
explained in more detail and a design system for a robotic tool is
presented. A robot tool is called an end-effector because it is used at
the end of the robot kinematics. This end-effector is designed for use
on industrial robots and is intended to make series production more
economical. For this purpose, the necessary information pro-cessing,
material flows and energy transformations are investigated and their
in-terrelationships are presented. The goal is to evaluate a suitable
physical operat-ing principle for bolting hydrogen tube nuts.