RU94043246A - Device for attaching running water lines - Google Patents

Abstract

FIELD: plumbing. SUBSTANCE: device for attaching running water lines to one in operation without cutting it off from the system and discharging water has two pipes. Lower pipe is welded to the line under pressure and equipped with isolation valve. Cutting tool in the form of drill is connected to the drive to drill using rotary spindle coming through a gland of the upper pipe. As this takes place, wedge valve is attached to the pipe welded to the pressurized line instead of upper pipe. Wedge valve size is adequate to the inner diameter of the line to be welded in. Worm gear with electric drive to revolve cutting tool, and a screw for feeding this tool in the process of cutting is attached to the wedge valve through adaptor. Combined cutting tool comprising spiral and ring bits is used to attach the pipeline. In so doing smooth cylindrical surface of spiral bit stem 10 - 20 mm extends over the surface of teeth of the ring bit to provide reliable guiding. EFFECT: it may be used for attaching pipes of wide range of diameters.

Claims (1)

The invention relates to the field of construction equipment, in particular to plumbing. The purpose of the invention is the provision of a tie-in of a new water supply system with a diameter of 50 mm and higher into the corresponding one operating without the use of manual electric or pneumatic drills and a full guarantee of the reliability of the tie-in against leaks during operation. The essence of the invention lies in the fact that the device for tapping a water pipe into an existing one without disconnecting it from the network and draining water from it contains two pipes, the lower of which is welded to the existing water supply and equipped with a shut-off valve, a cutting tool in the form of a drill connected to a drive for drilling rotating spindle passing through the stuffing box seal of the upper pipe. At the same time, a wedge gate valve is fastened to the branch pipe welded to the existing water supply pipe instead of the upper branch pipe with the gland. cutting process. To insert water pipes, a combined cutting tool is used, consisting of a helical and annular drill, while the smooth cylindrical surface of the shank of the helical drill protrudes 10 ^o C 20 mm above the tooth surfaces of the annular drill, providing reliable direction, eliminating vibration and cooling the water of the annular drill during cutting . The device differs from analogues in that it can be used for tapping a wide range of pipeline diameters, provides high reliability of the tapping point from leakage during the operation of water pipes and the quality of the work performed.