Repair joint device and method of assembling the same
AssigneeThe Victaulic Company of Japan Limited
InventorsShinichi ASADA, Masao NAITO
Life of this patent
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Abstract
A repair joint device capable of joining by welding divided housings and of facilitating the welding operation; and includes a plurality of circumferentially divided housings, wherein each divided housing has a divided sleeve, a pair of end plates provided on both end portions of the divided sleeve, and a seal accommodation projection provided on each end plate. A projection-free area is formed between the seal accommodation projections. An auxiliary projection device is provided on the projection-free area.
Claims10
A repair joint device comprising a plurality of circumferentially divided housings surrounding a pipe from the outside, the divided housings being joined to each other by welding through a joint surface, wherein:
- each divided housing has a divided sleeve surrounding the pipe from the outside, a pair of end plates provided on both axial end portions of the divided sleeve, and a circumferentially extending seal accommodation projection provided on an axially outer surface of each end plate to form a seal accommodation space between the divided housing and the pipe;
- each seal accommodation projection does not extend up to the joint surface;
- a projection-free area is formed between the seal accommodation projection of one of the pair of adjacent divided housings and the seal accommodation projection of the other of the pair of adjacent divided housings;
- and
- an auxiliary projection device is removably provided on the projection-free area, the auxiliary projection device forming an additional seal accommodation space between the auxiliary projection device and the pipe.
A method of assembling a repair joint device comprising a plurality of circumferentially divided housings surrounding a pipe from the outside, the divided housings being joined to each other by welding through a joint surface, the method comprising:
- preparing the plurality of divided housings each having a divided sleeve surrounding the pipe from the outside, a pair of end plates provided on both axial end portions of the divided sleeve, and a circumferentially extending seal accommodation projection provided on an axially outer surface of each end plate to form a seal accommodation space between the seal accommodation projection and the pipe, wherein the seal accommodation projection of each divided housing does not extend up to the joint surface;
- installing each divided housing around the pipe, wherein a projection-free area is formed between the seal accommodation projection of one of the pair of adjacent divided housings and the seal accommodation projection of the other of the pair of adjacent divided housings;
- joining the pair of divided housings by welding through the joint surface;
- removing a weld surplus remaining on the joint surface of the pair of divided housings;
- and
- providing an auxiliary projection device on the projection-free area, the auxiliary projection device forming an additional seal accommodation space between the auxiliary projection device and the pipe.
Dependencies are inferred from the claim text.