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Snake for installing a cable in a conduit

A pig and pipeline technology, applied in the field of optical fiber or cable, can solve the problems of unbearable and limited pulling force of the pig, and achieve the effect of eliminating liquid leakage

Inactive Publication Date: 2005-09-07
PLUMETTAZ
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These flexible lips have the disadvantage of not being able to withstand high pressures usually not exceeding a few bars, so that the pulling force of the pig is relatively limited

Method used

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  • Snake for installing a cable in a conduit
  • Snake for installing a cable in a conduit
  • Snake for installing a cable in a conduit

Examples

Experimental program
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Effect test

Embodiment Construction

[0032] With reference to the drawings, and more specifically Figures 1 through image 3 , a pig for installing cables in pipelines includes a main body 2, a seal 3, front and rear guides 4, 5, devices 6 for fixing parts of the pig, and a connecting piece 7, the The connector is used to attach the pig to one end of the cable to be installed in the pipeline. A hoop (not shown) is mounted on the end of the cable, the hoop including a complementary connector.

[0033] The main body 2 comprises a radially elastic tube 9, a radially walled part 10 which at least partially closes off one end of the tube 9, except for the passage for the fixing device 6 and the orifice to receive a valve or pressure reducer and small holes. The wall part 10 separates the interior 11 of the body from the exterior 12 on the one hand, stabilizes and strengthens the body on the other hand and makes it possible for the body to be connected to other bodies and / or guides 4 , 5 . In this embodiment, in orde...

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PUM

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Abstract

A snake for installing a cable in a conduit, comprising a body (2, 2', 2'') and a joint (3, 3', 3'') corresponding to the shape of the inner surface of the conduit (8), said body comprising a tubular part (9) which is radially elastic and on which the joint is mounted, and a support part (13, 13', 13'') which is fixed to or integral with the tubular part, the tubular part having a guide surface (14) which is used to guide the snake inside the conduit, the diameter of the guide surface being slightly smaller than the maximum diameter of the joint such that the support part radially deforms the tubular part when the snake passes into deformed parts of the conduit.

Description

technical field [0001] The invention relates to the technical field of cable installations, such as buried and / or underwater installations of optical fibers or cables inside pipes. The term "cable" shall also denote tubes and the like for conveying electrical energy, fluids and electrical, optical or other signals. The term "cable" also relates to single-phase or three-phase low, medium and high power cables. Background technique [0002] There are various known methods for installing cables in ducts. These methods are described in detail below. [0003] "Pull" means that the cable is attached by its end to a sling already installed in the pipe. The sling is connected to the cylinder of the winch around which the sling is wound and the cable can be installed in the duct by sliding the cable in said duct. [0004] "Pull-push" means simultaneous pulling and pushing at the entrance to the duct by using a device for pushing the cable in order to reduce the traction on the ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/08
CPCH02G1/081H02G1/086
Inventor S·奥伯里G·普卢姆塔茨
Owner PLUMETTAZ
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