Jaw-type pipe coupler with simple structure

Abstract

The invention provides a jaw-type pipe coupler with a simple structure, which comprises a flange body which is welded at the end part of a pipe to be coupled and fixed with an end cover of the coupler; the end cover of the coupler is fixedly connected with a seal gland; jaws are evenly distributed around the flange body; a jaw drive ring is arranged between the jaws and the seal gland; the pipe to be coupled is fixed with a round plate which is connected with an outer sleeve of a jaw connecting device; a drive hydraulic cylinder is arranged on the round plate; a rod of the drive hydraulic cylinder is connected with an annular plate; and a convex ring of the jaw drive ring is clamped in an annular groove of the annular plate. The jaw-type pipe coupler is used for fast automatic coupling of pipes in deep-water ocean, which causes the jaws to be located accurately, reduces impact on original jaws during moving, greatly simplifies the mechanism of the jaw-type coupler, realizes the possibility of production and serialization, requires no grasping force continuously provided by the outside when connecting the jaws, and realizes reliable grasping by the self-locking of the drive ring and the combination surface of the jaws.

Description

(1) Technical field [0001] The invention relates to a submarine pipeline coupler for auxiliary manipulation. (2) Background technology [0002] Jaw style pipe couplings are commonly used to provide remote connections between pipes or other tubular items. [0003] It can be seen in foreign patents that this type of claw-type pipe connector. For example, the power for driving the jaws in US Patent No. 4,153,278 is provided by a hydraulic cylinder, and the piston rod drives the drive ring to move up and down, so that the jaws rotate to realize opening and closing. There are two types of jaw designs. One type is that the upper and lower parts of the inner side of the claw are spherically matched with the flange of the matching pipe end, and the other type is that the upper part of the inner side of the claw is a tapered hole, which is matched with the conical surface of the flange of the matching pipe end, and the lower part is spherical. Cooperate. These two methods have pr...

AI Technical Summary

Problems solved by technology

[0005] Compared with 4730853, in U.S. Patent 4708376, a sealing plate is added at the bottom of the coupling to prevent debris from entering the coupling; the shape of the claws has changed, and the local structure has changed when the outer diameter of the pipe is different, but the claws are different from the The joints of the pipe fittings are all cylindrical surfaces, and there is stress concentration

Images