Damping treatment for pipes and bodies
AssigneeThe Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
InventorJohn R. C. House
Life of this patent
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Abstract
A damping treatment for bodies where the temperature may rise above 150.degree. C. consists of a number of stand-off cantilever, sandwich type dampers (1), consisting of a layer of viso-elastic material (3) sandwich between two rigid metal plates (4, 5), which are attached to a support (2) that can be attached to the body (7). The support (2) is thermally isolated from the body (7) and is positioned at a position of high amplitude of a radiating frequency that is to be reduced.
Claims12
A vibration damper for hot pipes, said pipes having a maximum temperature, said damper comprising:
- two rigid plates, said plates having a length;
- a layer of viscoelastic material disposed between said two rigid plates;
- support means connected to one of the plates, for attaching said one plate to the said pipe;
- and
- a thermally insulating barrier means, disposed in a thermal path between said viscoelastic material and said pipe, for preventing temperature induced inefficiency of the visoelastic materials damping characteristics.
A method of damping the vibrational energy of a hot pipe, said pipe having a maximum temperature, comprising the steps of:
- providing two rigid plates, said plates having a length;
- providing a layer of viscoelastic material disposed between said two rigid plates;
- providing support means connected to one of the plates for attaching said one plate to the said pipe;
- providing a thermally insulating barrier means, disposed in a thermal path between said viscoelastic material and said pipe, for preventing temperature induced inefficiency of the viscoelastic materials damping characteristics;
- and
- attaching said support means to said pipe.
Dependencies are inferred from the claim text.