Thrust Load on Braided Flex Hose
Thrust Load on Braided Flex Hose
(OP)
Hello,
Does pressure cause thrust load on anchor at the end of a metal braided hose, similar to expansion joint thrust load? What do I have to consider for designing that anchor?
Thanks,
Does pressure cause thrust load on anchor at the end of a metal braided hose, similar to expansion joint thrust load? What do I have to consider for designing that anchor?
Thanks,





RE: Thrust Load on Braided Flex Hose
RE: Thrust Load on Braided Flex Hose
RE: Thrust Load on Braided Flex Hose
RE: Thrust Load on Braided Flex Hose
RE: Thrust Load on Braided Flex Hose
As mentioned in the previous threads, proper orientation of the hose is key to its longevity. It is important to limit any structural load inputs (especially torsional) into/through the flex hoses.
RE: Thrust Load on Braided Flex Hose
The braids are as emickelson says but there will be some loads imposed on the anchors from the expansion of the hose if the hose is mounted straight between two anchors. This is due to the slight movement of the hose as the braid tightens when pressure is applied.
To assure there will be not loads transfered to the anchors the hose should have at least one right angle bend. As the hose moves under pressur the bend will absorbe the movement. IF the anchors are straight in a line the hose could be looped (like a U bend) to allow the movement to be absorbed.
If the anchors are straight in line with each other and there is compression from the piping on the hose or expansion joint the pressure forces due to internal pressure
(pressure,psig X hose or expansion joint area = pressure thrust), pressure thrust, will have to be over come before the hose or joint can be compressed. This force can be substantial. A hose with and area of 1sq in. and an internal pressure of 1500psig would have a pressure thrust of 1500lb. This pressure thrust would normally be held by the braid or tie bolts. If the hose or expansion joint is being comprssed by the adjoining piping the pressure thrust of 1500lb (in the example) would have to be overcome before the hose or expansion joint would compress.
Give careful attention to the hose arrangement and the piping movement so the hose can properly absorbe the movement without transmitting additional forces to the piping or equipment.