Fluid handling – With repair – tapping – assembly – or disassembly means – Tapping a pipe – keg – or apertured tank under pressure
Reexamination Certificate
1998-04-30
2001-11-27
Walton, George L. (Department: 3753)
Fluid handling
With repair, tapping, assembly, or disassembly means
Tapping a pipe, keg, or apertured tank under pressure
C138S094000, C408S099000, C408S102000, C408S126000
Reexamination Certificate
active
06321778
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an apparatus for pipeline construction, and more particularly to an apparatus for pipeline construction in the petroleum industry, chemical industry, water supply and drainage engineering etc., which can perform, without stopping fluid delivery in the pipeline, the operations of drilling, plugging and collision-mat feeding during such the construction processes as remodeling flow circuit, connecting a new pipe with a used one or replacing pipes.
BACKGROUND OF THE INVENTION
At present, under the condition on that the fluid delivery, particularly the pressurized fluid delivery in the pipe is not interrupted, the construction of pipeline generally include the operations of drilling, plugging and collision-mat feeding. In general practice, there are three apparatus used for the operations. A drilling apparatus is used to make opening on the wall of the operated pipe, a plugging apparatus is then used for plugging the pipe, and a collision-mat feeding apparatus is finally used for placing a permanent collision-mat in the opening of the pipe. Thus, the three separate apparatus are needed for the construction operations of the pipeline. Therefore, a number of problems, such as the repair and maintenance of the apparatus, as well as transport of the apparatus are resulted from so many apparatus used. Besides, in order to form by-pass path for fluid delivery during the constructions, additional opening has to be made in the upper and lower reaches of the constructed pipe, therefore the additional work is done and additional damage of pipe is caused.
OBJECTIVES OF THE INVENTION
In view of the above mentioned prior art, one of the objectives of this invention is to provide an apparatus which has the functions that three prior art apparatus, an drilling apparatus, a plugging apparatus and a collision-mat feeding apparatus, can perform.
Another objective of this invention is to provide an apparatus, when it is used for construction operations, no additional by-pass holes on the pipe is needed.
Still another objective of this invention is to provide an apparatus, which is shorter and lighter in comparison with the prior art apparatus. Therefore, it can be used in the workshop and it is easy to move.
SUMMARY OF THIS INVENTION
The present invention provides an apparatus for pipeline construction,, which comprises a constructing means, a feeding means and a base. Said constructing means is located on the lower part of the apparatus, which includes a chest and a constructing unit in the chest for completing operations. Said feeding means is located on the upper part of the apparatus and may drive the constructing means to rotate and approach towards the operated pipe. Said feeding means includes a main shaft, a rod, a driving means and a rod feeding mechanism. Said main shaft having a central hole extends through whole feeding means so as to drive said constructing means. Said rod is provided within the central hole of the main shaft and is capable of selectively moving with respect to the main shaft so as to drive the constructing means to move vertically. Said driving means transmits power to said main shaft and drives the main shaft to rotate and to move vertically. And said rod feeding mechanism drives the rod to move vertically. The apparatus according to the present invention further comprises a base, the bottom of the base is detachably connected with said constructing means and the top face of the base is detachably connected to said feeding means.
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Chen Jisheng
Li Mingyi
China Liaohe Oilfield Huasheng Pipeline Research Institute
Gilman & Berner LLP
Lowe Hauptman & Gilman & Berner LLP
Walton George L.
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