IL26837A - Pipe joint - Google Patents

Description

CI 25509 PATENTS AND DESIGNS ORDINANCE SPECIFICATION AN PIPE JOINT A CITIZEN OF do declare the nature of this invention and in what manner the same is to be to be particularly described and ascertained in and by the following statement The joint of heat conducting pipes in ground has to comply with Tho embedding into without tho aid of cement channels for the requires tho development of special insulated in which gap between the actual heat conducting and the outer is filled with a homogeneous and material such as a foamed insulating Said insulating material is secured to the surface of the heat conducting pipe as well as to the interior surface of the Such pipes are brought to the together with heat conducting pipes which have their extremities insulated where conducting pipes and the pipes ore welded Then the portions of the heat conducting pipes have to be insulated at the This done by wrapping the open length of the pipe in tho region of the welding with insulating portions However a gap remains between these portions the foam insulation and tho barrel of the adjacent insulated portions of the through which humidify may penetrate from tho ground and thus reach the external the heat it then can cause In order that the penetration humidity is the entire joint area has to be surrounded by which guarantees a hermetic seal on its ends with tho of the two insulated The insulated pipes to be axially so as to comply with the difference in temperature and with the ground movements Therefore the jacket must either be displaceable in the with the pipes or better tho pipes must be displaceable in the The first solution seems to be difficult to meet and the second solution entails the problem as to how to avoid humidity to penetrate from the the insulation members and insulating casing of the the heat conducting pipe without making impossible the relative displacement of casing in respec But also in wall particularly when inserting1 or extracting pipes produced synthetic resin in or from buildings and shafts the problem arose how the penetration of dampness can be avoided along the external surface of the pipes through the gap between the same and the surrounding wall without influencing the displacement the pipe and the ing sleeve produced cement and sand In this the sleeve is formed by with which the remaining rupture the wall has been around tho pipe after the same has been The present invention solves this problem the simplest way The Invention provides a means for preventing penetration of dampness into the gap betwee two piped produced from synthetic resin with a plain surface and sleeve produced from cement and sand which surrounds said pipes when said pipes are characterised by the provision of a on the pipes produced from synthetic resin or rubber which completely encased by the sleeve made of cement and sand and which has ribbed or grooved exterior and interior which permits relative displacement of the pipe and the sleeve due to differences in temperature or to ground The ribbed or grooved of tho ring prevent the of humidity along the even surfaces by but tho displacement of pipe therefore of the sleeve produced from cement and sand with respect ring may still order that the present be more readily understood reference will now be made to tho accompanying which illustrates in cross a pipo to this The join of two insulate pipes 1 and 2 is illustrated each of comprising a heat conducting pipo in a sleeve 4 of rosin whereby a once is which is filled in a and homogeneous manner by on insulation from synthetic rosin or hard This insulation is secured to tho exterior of and to the interior side of tho sleeve Such insulated pipes t and 2 to the site and ore embedded in suitable channels in the The heat conducting pipe 3 projects and ore not Two insulated pipes which are to be connected joined by tho and ends of the two heat conducting pipes by a welded joint 6 and this is tested by a compression The open ends of tho conducting pipes 3 are coated with on known In addition to tho insulation the open length of pipes with further insulating Between the insulating members and tho adjacent parts of the insulated pipes 1 there is a clearance through which humidity ground might penetrate into the conducting pipes 3 and thus cause Firstly 9 is sealed by the bands at the secure the insulating members around tho length of the heat conducting pipe 3 as extremities overlap over tho with the extremities of the sleeve 4 as illustrated at seal by of the bonds does no seem to bo efficient enough because the insulated pipes 1 and 2 in surrounding ground to heat expansion ground This continuous displacement would the then dampness penetrate through those damaged parts into the gap and finally the surface of the heat conducting pipe order to this the entire joint area is surrounded by a sleeve produced into the It been experienced such sleeve does not adhere so to the surface of the synthetic pipes 4 thai the pipes 4 in this is ia order avoid dampness penetrating by c between the and the pipes ring is provided at the extremity of each of the pipes spaced from the ends of the said being 14 included in the The rings ore on the their exterior and interior are provided grooves or with ribs and These grooves or ribs 16 form a whieh prevents dampness that might have reached the 4 penetrating through the space to the ga The described and waterproof sleeve efficient and can be cheaply and produced even by unskille It is advantageous to provide the insulated pipes with the rings before they are brought to the In similar dampness along plain of such insulated pipes or of similar pipe of can bo penetrate g p said pipes and the wall ruptures wherein pipes are without the displacement of pipe in respect to the alcove produced from cement and surrounding tho and without tho visiblo from tho be achieved by tho rupture sufficiently so as to provide for pipe with a corresponding to tho It is to choose a axial expansion is smaller than the thickness of the on tho is pushed on the pipe to tho of the rupture and tho space is filled a cement nnd sand so that is completely hidden the faces of such the penetration of dampness by notion the of tho pipe the cemen an sand sleeve one side tho to the other side o the In way the input output of pipes be sealed in concrete which are made for the reception of arches or armatures and tho insufficientOCRQuality

Claims (1)

1. HAVING NOW PARTICULARLY OESCR I BED AND ASCERTAINED THE NATURE OF 6AI INVENTION IN WHAT MANNER THE SAME TO BE DECLARE THAT OLA I for penetration of into the two produced sleeve produced from and surrounds pipes w pipes tiro end of each by tho provision of oa from synthetic resin or is completely encase b the sand and has or grooved and but mits displacement tho and duo to differences or to movements 2 Means according Claim a ring on each extremity of tho pipes to bo joined of synthetic rosin or 39 according to Claim insulating members secured by bands projecting extremities of the pipes so that rings are spaced from tho end on the 4 for of into tho gap formed when two pipes of tho referred to Joined substantially as hereinbefore described and with the accompanying insufficientOCRQuality