RU1795216C - Insert for repair of pipe-line made of reinforced-concrete pipes - Google Patents

Abstract

The invention relates to the construction of pipelines, in particular reinforced concrete pipes, and can be used to repair pipelines from pressure-fed reinforced concrete pipes with a split-sleeve connection. The purpose of the invention is to speed up and reduce the cost of repairs, increase the reliability of the operation of the pipeline. An insert for repairing a pipe made of reinforced concrete pipes consists of a steel cylindrical core 1, sleeve elements 2 welded to it, with O-rings 4, with a sleeve 5. To protect against corrosion, the inner surface of the insert is centrifuged by a layer of concrete, and a steel strand is wound onto the core reinforcement 3, and then an external protective layer of concrete is applied by force spraying. 1 ill.

Description

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The invention relates to the field of construction, in particular to reinforced concrete pipes, and can be used to repair pipelines from pressure-sensitive reinforced concrete pipes with socket-sleeve connections.

In the event of an accident on an existing pipeline, existing butt joints do not allow dismantling and replacement of damage to the pipe without destroying the socket joint of the reinforced concrete pipe.

The closest in technical essence and the achieved effect to the proposed one is an insert for repairing a pipeline of reinforced concrete pipes, comprising a steel core, a socket and sleeve end elements.

The disadvantages of using this insert are the significant cost of time, manual labor and materials; difficulty in forming and operating a butt joint.

The purpose of the invention is to speed up and reduce the cost of repairs, increase the reliability of the operation of the pipeline.

The goal is achieved by the described insert for repairing a pipe made of reinforced concrete pipes, made in the form of a reinforced concrete pipe with a length equal to the length of the steel core of the replaced pipe, with sleeve end elements on both sides connected by rubber o-rings, and a coupling with an inner a diameter equal to the inner diameter of the cylindrical part of the socket of the reinforced concrete pipe having a profile of the socket at the side of the insert end.

The drawing shows an insert for repairing a pipeline of reinforced concrete pipes, a diametrical section.

Claims (2)

The insert contains a steel cylindrical core 1 and sleeve end elements welded to it 2. To protect against corrosion, the inner surface of the pipe by centrifugation is coated with a concrete layer, steel tensile reinforcement 3 is screwed onto the core, and then the outer protective layer of concrete is applied by force spraying. The total length of the insert corresponds to the length of the steel. the bottom of the main pipe. At the sleeve hour Formula of the invention Insert for repairing a pipeline of reinforced concrete pipes containing a steel core, socket and sleeve . these pipes put on o-rings 4, then on one of the edges of the insert put on a sleeve 5 (steel or reinforced concrete), the inner diameter of which corresponds to the inner diameter of the cylindrical part of the bell end element of the main pipe. The coupling on the side of the end face of the insert has a flare, the profile of which corresponds to the profile of the bell-shaped element main pipe. The coupling length must be at least 300 mm, which ensures reliable connection of the insert with the main pipe for all grades of reinforced concrete pipes with a steel core (GOST 26819-86). The specified insert is used as follows. The damaged pipe is cut and removed in parts without violating the end elements of adjacent main pipes. The presence and integrity of the rubber seal ring on the sleeve portion of the adjacent pipe are checked. If necessary, put on a new ring. Then, a reinforced concrete insert with a clutch not protruding is lowered into the trench over the edge of the pipe. Before lowering, the insert is oriented with the sleeve edge to the sleeve of the adjacent pipe. The insert is inserted along the axis of the pipeline, then the sleeve part of the insert with a sealing ring is inserted into the socket of the adjacent pipe. In this case, the rubber ring is compacted, sealing the annular gap between the surfaces of the socket of the adjacent pipe and the sleeve part of the reinforced concrete insert. Fix the adapter coaxially to the pipeline and push the sleeve onto the sleeve part of the adjacent pipe until it stops. The deformation of the rubber rings ensures the tightness of the connection of the insert with the sleeve end element of the adjacent pipes. The proposed insert allows: 1) speed up repairs by 8 times; 2) reduce / reduce material costs for repairs by 2-3 times; h) increase the reliability of operation after repair. The use of the insert is planned for the elimination of accidents in existing closed irrigation systems of the country. It is also possible to use modifications of the proposed insert when connecting additional consumers to existing pipelines. end elements, characterized in that, in order to expedite and reduce the cost of repairs, increase the reliability of operation of the pipeline, the insert is made in 51795216 6 in the form of a reinforced concrete pipe with a length equal to the ends, a coupling is installed with the inner length of the steel core replaced by a replaceable diameter equal to the inner diatube with sleeve end elements to the meter of the cylindrical part of the bell on both sides equipped with rubber reinforced concrete pipes, having with sealing rings, with a bell profile at one end of the insert.