High Pressure Solenoid Valve used on Hydro Power Station Turbine

Mangahao Hydro Station
Mangahao Hydro Station


Turbine Seal Ring System
Turbine Seal Ring System


GSR Type 73 High Pressure Solenoid Valve
GSR Type 73 High Pressure Solenoid Valve

The first of the State Hydro Systems in the North Island the Mangahao station in the Manawatu was officially opened in November 1924 by then Prime Minister Bill Massey. Whereas most New Zealand hydro stations are built on rivers or supplied by natural lakes, Mangahao makes use of small and remote rivers in the bush-clad Tararua Ranges. Over 80 years on, and now a jointly owned by Todd Energy & King Country Energy the station continues to provide a valuable contribution to the national grid both in terms of generation output and voltage support to the Cook Strait DC inter-island cable.

Mangahao Hydro Station approached Connect 2 Control to see if we were able to provide a solenoid valve to replace an existing valve that had seen over eighteen years of service and that they were no longer able to obtain spare parts for. The solenoid valve is used to supply water to a sealing ring – one of the key components on a turbine system.

One of GSR’s key strengths is the ability to customise their standard valve to suit specific applications. In this case GSR was able to easily modify one of their Type 73 solenoid valve with a usual working pressure of 20 bar so that it could handle pressures up to 40 bar. GSR was also able to build a manual override into the valve. Manual overrides can be used to test the system the valve is operating in without the need to energise the solenoid coil as well as enable solenoid valves to be manually operated in the event of power failure.

 

 

 

 

 

 

 

 GSR Type 73 High Pressure Solenoid Valve 

 

 

 

  

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