Power Generation... 

Eastman Chemical

Application

Steam valve control

Customer

Eastman manufactures chemicals, fibres and plastics materials for use in a wide range of products

The Challenge

The GE turbine, driving a 7.5 megawatt electric generator, operated on 1450 psig steam. The steam flow to the turbine was controlled by seven control valves mounted in the turbine’s steam chest and operated by individual cams mounted on a 2 inch diameter cam shaft. As the cam shaft rotated approximately 200º, the cams lift opened the 7 control valves in a sequence based on the position of each cam on the shaft.

The existing actuator on the turbine was a 10 inch diameter single acting, spring return hydraulic cylinder, operating off the 150 psig turbine lube oil system through a mechanical governor operated pilot valve.

Lacking the design data on the aging system, replacing or retrofitting the existing cylinder with similar technology would be expensive, if technically possible or feasible.

The Solution

Eastman chose a direct replacement of the existing hydraulic cylinder with a linear actuator.

Results

The customer's engineers chose a GSX60 with a 10 inch stroke. The configuration required a handwheel for manual operation, with the clevis mount rotated 90º to allow unfettered access to the handwheel.

 

Unrivalled Product

 

Unrivalled Product Range

Olsen has a unique breadth and depth of the most high performance, efficient and reliable actuators on the market. We also supply an unrivalled array of supporting equipment to complement your applications, including Servo Motors & Drives, gear boxes, cables and countless options to customise to your specifications.

View All Products

£4m sustainability boost for Liverpool City Region research campus

Olsen's headquarters at Sci-Tech Daresbury is to receive a £4 million...
Read Full Story

All I want for Christmas is a new website!

Build it and they shall come...! Well it looks as though that has come true as...
Read Full Story

ANCA Motion new distribution agreement!

We are delighted to have signed an agreement with Australian, ANCA motion...
Read Full Story

eVTOL start up tests

Very exciting to see the Cranfield Aerospace and Rolls Royce JV power up and...
Read Full Story

Olsen joins Subsea UK

Olsen have joined up with Subsea UK as a registered member! Subsea UK is the...
Read Full Story

Dutch ATB host Exlar European Sales Conference

Exlar has a new CEO and General Manager David Dieter and he brings great...
Read Full Story

AGM, Team building + Christmas Lunch

Following on from a successful 2019 and the Crystal Maze in July we decided to...
Read Full Story

Olsen attended supply chain Expo at the new £20m AMRC Airbus facility

Wales is a centre of excellence for aerospace manufacturing and Maintenance,...
Read Full Story

DSEI Expo 2019

As part of the NDI EEF Make UK cluster Olsen exhibited opposite the Australia...
Read Full Story