Thursday, 24 May 2012

Single Cylinder plants

These are usually found on short run ships such as passenger ferries although there present day use is very restricted
< for="" vessels="" on="" short="" runs="" a="" turbine="" installation="" is="" required="" able="" to="" cope="" with="" wide="" and="" rapid="" variation="" in="" loads="" therefore="" temperature="" conditions.="" this="" designs="" warming="" through="" time="" benficial="" the="" ships="" operation. For this design criteria the Single Cylincer Double Casing turbine was developed

    Advantages of using A single cylinder
    • Lower first cost
    • Easy to inspect and maintain
    • No cross over pipes to give heavy side thrust
    • Short warming through time, rapid shut down time
    • Rapid manouevring
    • Single setting gland control ( glands are operating subatmospheric all times)
    Advantages of using A double casing
    • As the glands operate on the low pressure side of the turbine they may be of simplified and shortened design
    • The outer casing temperature is only slightly above engine room temperature simplifying lagging requirements.
    • The outer casing may be fabricated from mild steel
    • Radiation losses reduced at full power
    • Smaller temperature gradients reduce the possibility of distortion
    • All expansion/contraction and side thrust is absorbed by the inner/other casing interface reducing the possibility of misalignement to the gearing

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1 comment:

  1. I am the author of most of the work on your website against which you are making financial gain. If you do not gain permission or remove it I will take further action. My site is non-commercial, I note you have placed content from marinediesels.info which is a commercial site, you are in breach of his copyright and as such ne may not be as generous in allowing you time to remove his work before taking further action.
    brian

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