System and method for preloading a high stress area of a component

摘要

The exposure of components to high-pressure fluids can result in the application of high tensile stresses to those components, which may lead to reduced life. The preload system described herein helps to reduce the magnitude of those tensile stresses by providing a body and a plug. The body includes a first bore and a second bore. The first bore is configured to be exposed to high tensile stresses. The second bore includes a first engagement structure and a bottom surface near a first portion of the first bore. The plug includes a second engagement structure and a first end. The second engagement structure engages the first engagement structure to force the first end of the plug against the bottom surface of the bore. The force of the plug against the bottom surface of the bore applies a compressive preload to the first portion of the first bore.

主权项

1. A preload system comprising:
a body including a body first portion and a body second portion; a first bore formed in the body first portion and configured to be exposed to high tensile stresses; a second bore formed in the body second portion and including a first engagement structure and a bottom positioned near the body first portion proximate a portion of the first bore that is exposed to the high tensile stresses, wherein the body further includes a surface entirely covering the bottom of the second bore; and a plug including a second engagement structure and a first end, the second engagement structure engaging the first engagement structure to force the first end of the plug against the surface of the body; wherein the force of the plug against the surface of the body applies a compressive preload to the portion of the first bore that is exposed to the high tensile stresses.