A plug used for sealing off pipeline leakage
A technology for pipeline leakage and plugging, which is applied in the direction of pipe components, pipes/pipe joints/pipes, mechanical equipment, etc., can solve the problems such as the inability to use conventional pipe clamps for blocking, etc., and achieves a simple structure, short maintenance period and low cost. Effect
Inactive Publication Date: 2016-05-25
CHINA NAT OFFSHORE OIL CORP +1
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- Description
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Problems solved by technology
However, when the pipeline leakage area is located in a narrow space or the leakage site is due to other structural objects, it will not be possible to use conventional pipe clips to achieve plugging
Method used
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Embodiment Construction
[0021] The specific embodiments of the present invention will be further described below in conjunction with the drawings.
[0022] Such as Figure 1~Figure 8 As shown, a plugger for pipeline leakage plugging of the present invention is arranged at the opening of the pipe seat 96 of the leakage of the oil pipeline 99. The plugger 10 includes a vertical rod 11 with a big cone at the lower end and a sleeve At the lower end of the vertical pull rod 11 and contacted by a tapered surface, the anti-dropping pawl 21 is fixedly sleeved on the vertical pull rod 11 and located on the upper side of the anti-dropping pawl 21 to push the anti-dropping pawl 21 The compression cap nut 25 of 21, the lock nut 31 screwed to the vertical pull rod 11 and abutted against the upper end surface of the compression cap nut 25, the anti-dropping pawl 21 is circumferentially provided with the vertical pull rod 11 taper The comb-shaped claw teeth 22 with matching taper of the lower end of the shape form a ...
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The invention discloses a blanking plug for blocking pipeline leakage. The blanking plug for blocking the pipeline leakage comprises a vertical pull rod of which the lower end is large and conical, an anti-releasing clamping jaw arranged at the lower end of the vertical pull rod in a sleeve mode and fitly contacting with the lower end of the vertical pull rod through the conical surface, a compression cover nut firmly arranged at the vertical pull rod in a sleeve mode and located at the upper side of the anti-releasing clamping jaw to push the anti-releasing clamping jaw, and a locking nut screwed with the vertical pull rod and propped against the upper head face of the compression cover nut, the anti-releasing clamping jaw is provided with comb tooth-shaped jaw teeth along the circumferential direction to form a multi-petal type structure, wherein the comb tooth-shaped jaw teeth are matched with the conical lower end of the vertical pull rod in taper, the compression cover nut is hermetically butted to the top surface of a tube socket, and the vertical pull rod is hermetically connected with the lower end of the inner side of the compression cover nut. When using, the vertical pull rod is embedded in a leakage hole, the compression cover nut firmly sleeves the vertical pull rod, the locking nut is rotated, and the multi-pedal type anti-releasing clamping jaw is expanded by means of the push-pull effect of the vertical pull rod and compression cover nut so as to firmly lock the blanking plug at the leakage hole. The blanking plug for blocking the pipeline leakage solves the pipeline leakage problem in a small space, the structure is simpler, the operation is easier and more convenient to perform, the cost is lower, and the maintenance period is shorter.
Description
Technical field [0001] The invention relates to a plugger, in particular to a plugger for pipeline leakage plugging. Background technique [0002] The submarine pipeline is the lifeline of offshore oil and gas field production and the most commonly used transportation channel in the offshore oil and gas industry. Its advantages are that it can be continuously transported, and is almost not restricted by water depth, terrain and other conditions. It has a short laying period, quick production, high oil delivery efficiency and large capacity. It is an indispensable part of the offshore oil and gas production system. But its disadvantage is that the pipeline is on the seabed, and most pipelines are buried in the seabed soil to a certain depth. Once the pipeline is damaged, it is difficult to inspect and repair. In order to reduce the shutdown time and reduce the loss caused by the shutdown, it should be carried out as soon as possible before permanent repair Emergency repairs. [00...
Claims
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IPC IPC(8): F16L55/168
CPCF16L55/168
Inventor 陈大江周声结陈伟王丙明
Owner CHINA NAT OFFSHORE OIL CORP