Fluid handling – With repair – tapping – assembly – or disassembly means – Tapping a pipe – keg – or apertured tank under pressure
Patent
1994-02-09
1996-04-23
Walton, George L.
Fluid handling
With repair, tapping, assembly, or disassembly means
Tapping a pipe, keg, or apertured tank under pressure
30 94, 83745, 83829, 138 97, F16L 5510, F16L 5518
Patent
active
055094406
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a device making it possible to intervene on pipes of all types, such as tubes, pipes, pipelines and other conduits ensuring transport of fluids at any temperatures and pressures, so as to ensure stop of the circulation at any point, particularly in the event of a serious incident, ensuring total tightness during the whole operation of positioning, cutting of the pipe and closure.
Of course, such devices find their applications in all emergency cases where safety must be established after an accident, explosion, fire, attack or any other case where the stop of the flow in a pipe can no longer be mastered.
BACKGROUND OF THE INVENTION
The prior art discloses devices of this type: for example, U.S. Pat. No. 3,603,387 (SCHOEFFLER) describes a device for cutting a pipe, which may be controlled at a certain distance and presenting a casing surrounding the pipe, a saw blade rotating and advancing in the casing, provided with an abrasive disc which flattens the section of the conduit, on the upstream side, to ensure tightness thanks to members of the jack type which urge the blade upstream against the thrust of the fluid circulating in the conduit to apply the blade against the upstream section of said pipe and ensure tightness. This device presents the major drawback of obliging the blade to withstand the fluid pressure whilst it rests only punctually on the jacks, which work under full load, with the result that failure of any one of the jacks may bring about rupture of the assembly.
The devices according to the invention find in particular their applications in the case of oil wells on fire. In the prior art, in this latter case, use is firstly made of devices for extinguishing by blowing, particularly by explosion, to extinguish the fire, then one generally intervenes by lateral drillings to deviate the flux towards another new zone presenting all the equipment necessary for mastering the flow.
In the general case of pipes, one generally intervenes upstream of the zone where the incident occurs, at the place where the first valve or other device for stopping the flow is located, but this does not prevent the flow of all the fluid located between the zone where the incident occurs and the zone where closure may be ensured.
In any case, it is important to be able to stop as rapidly as possible the flow of fluid at the place closest possible to the zone where the incident occurred, insofar, of course, as the exterior conditions of temperature and of pressure allow the necessary operators to approach. As will be seen hereinafter, it is obviously possible to provide placing of the devices of the invention prior to the incident, which is. possible in those cases where it is desired to modify an installation, for example, for introducing a derivation or complementary branch on a pipe.
It is also possible to envisage automatic placing with the aid of remotely controlled or numerically controlled or like robots, effecting the same operations as the operators, as will be described hereinbelow.
SUMMARY OF THE INVENTION
The present invention relates in particular to a device for cutting a pipe transporting fluid in order to stop the circulation at any point, characterized in that it comprises a casing capable of being tightly mounted on said pipe, said casing containing at least one blade driven in rotation and advancing so as to saw the pipe transversely, said blade constituting a surface for stopping said circulation along the plane of section by the saw blade.
BRIEF DESCRIPTION OF THE DRAWINGS
In order better to understand the technical characteristics and advantages of the present invention, examples thereof will be described, it being understood that they are non-limiting as to their embodiment and the applications that may be made thereof. Reference will be made to the following Figures, which show:
FIG. 1, a perspective view, with parts torn away, of a device according to the present invention.
FIG. 2, an axial section on a stop system for a device su
REFERENCES:
patent: 1989768 (1935-02-01), Nieman
patent: 2972363 (1961-02-01), Santilli
patent: 2984129 (1961-05-01), Allen
patent: 3108499 (1963-10-01), Duncan
patent: 3227011 (1966-01-01), Larry
patent: 3603387 (1971-09-01), Schoeffler
patent: 3650547 (1972-03-01), Tickett
patent: 3652107 (1972-03-01), Tickett
patent: 3703906 (1972-11-01), Tickett
patent: 3735775 (1973-05-01), Tickett
patent: 3797354 (1974-03-01), Allison
patent: 4370995 (1983-02-01), Smith
patent: 4516598 (1985-05-01), Stupak
Cantaloube Elie
Cantaloube Yves
Societe Civile d'Invention pour la Gestion des Brevets Cantaloub
Walton George L.
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