EFFICIENCY GAINS FOR VALVE SITE AFTER UPGRADES

THIS TECHNICAL REFERENCE IS ACRODYNE’S INTERPRETATION OF THE PROJECT AND IT HAS NOT BEEN APPROVED BY THE END USER

Site Overview

This case study relates to Dights Falls which is a rapid and weir on the Yarra River in Abbotsford, Victoria, just downstream of the junction with the Merri Creek.

The weir plays an important role controlling water levels in the Yarra, pooling water for approximately 17 kilometres upstream and protecting important social, economic and environmental values of the river.

The Project

We were asked to offer a solution to automate 4 penstocks that were originally raised and lowered by a hand crank which involves hundreds of turns per penstock.

    

This is an upgrade to an earlier fish ladder project completed by Melbourne Water. This man made diversion channel has environmental significance as it is the barrier between salt and fresh water in the Yarra River and allows safe passage to many important species of fish, some of which are critically endangered. This project has been extremely successful and the need for it to remain easily and safely operable is of considerable importance.

The end solution needed to perform two major functions for both the operator and the general public.

Firstly Acrodyne needed to provide an option that safely aided the operator in the operation of opening and closing the valves as the current method is manual and has an inherent occupational health & safety risk. Secondly as these valves are accessible to the public, they required a level of protection to avoid injury or unwarranted operation.  

The Solution

We first scoped out the requirements on site performing a detailed measure up and torque testing. 

The APS140N petrol driven portable actuator was chosen in conjunction with ACROGEARS bevel gearbox (AG-B2 3:1 ratio) to assist in the reduction of the opening and closing velocity to 300mm maximum per minute at full RPM of the actuator.

The stainless pedestals were designed and fabricated to provide an ergonomic height for the actuator and operator. All works were performed in Acrodyne’s well equipped workshop.

In addition to protect the asset, we supplied a suitably calibrated  Aunspach D80 torque limiter in a Melbourne Water approved stainless steel housing. As this area is accessible to the public the gearbox input shaft is concealed and lockable to prevent unauthorised operation.

The Result

The result of this initiative provides a solution to the challenges of manually operating large valves and at times with significant turns for full travel. The addition of the gearboxes complete with pedestals and over-torque protectors means that operators can safely use ACROGEARS portable actuator ensuring safe operation to both the operator and the assets. 

Products and Services Used

  • ACROGEARS Bevel Gearbox
  • ACROGEARS Petrol Powered Portable Actuator
  • Acrodyne’s Sales and Service

PDF DOWNLOAD

DightsFallUpgrade-CaseStudy (4.4Mb)

Acrodyne Newsletter

Monthly news on the latest products, case studies, how to’s and industry events. (* indicates required)