DE3035199A1 - Foam material pipe bend insulating split shell - has two integral shell parts joined by thin hinge forming portion - Google Patents

Abstract

The pair of insulating shells of foamed plastics fit round a pipe bend, and are used in conjunction with an outer protective casing of elastic plastics sheet which can be hinged open. The shells (1,1') are made in one piece and joined together at a point where they will subsequently bear against each other by a thin portion (2) forming a hinge. The design ensures that the end faces of the shells are flush with each other after installation on the bend.

Description

description

The invention relates to a pair of insulating half-shells according to the preamble des P a t e n t a n s p r u c h s 1.

Known insulating half-shell pairs of the type mentioned are as separate Pieces designed to cover a pipe bend is the outer Protective jacket unfolded by hand, the two insulating half-shells are inserted, and finally it becomes the Krünirner isolation consisting of these three elements pushed onto the relevant pipe elbow. The protective sheath has so much elasticity that the two insulating half-shells at least loosely with a certain form fit against the elbow so that the seam of the protective jacket comes through can be glued with an adhesive strip or by brushing on acetone.

The inner surface profile is in the interest of universal applicability the insulating half-shells designed so that an application in connection 1 usual Heating pipe elbow pieces (relatively narrow radius of curvature), drawn heating pipe elbows (relatively large radius of curvature), as well as three different types of screwable Water pipe fittings can be used. When sliding onto a pipe elbow is therefore no more precise between the inner surfaces of the insulating half-shells and the pipe Positive locking before, so that the insulating half-shells even when pushed over outer Treasure coat within the same have a certain possibility of displacement. this has the consequence that the end faces are not necessary in the case of an insulating half-shell must be flush with the corresponding end faces of the other insulating half-shell. Whether the front surfaces are flush or not cannot be checked from the outside either as the material of the protective jacket is usually opaque. This can in turn lead to the fact that between the end faces of an insulating half-shell pair and the subsequent end faces of the insulating half-shells of a straight pipe section empty spaces and thus cold bridges arise, since the insulating effect of the protective jacket is proportionate is low, by carefully working when pushing on the two insulating half-shells with the protective jacket on the pipe elbow, these disadvantages can be largely eliminated avoid, but this is associated with a correspondingly higher expenditure of time, which is normally not driven by an insulation tradesman. Come in addition, that the outer protective sheath compared to the pair of insulating half-shells has a certain Has the ability to rotate around the common axis of curvature. This in turn leads to that the protrusion of the protective jacket over one end face of the pair of insulating half-shells is larger than the other end face, so that the overlap of the protective jacket over an adjacent end of a protective jacket of a straight pipe section is too low. However, if you move the protective jacket into a correct position, you can this in turn creates an undesirable mutual shift the from the protective coating D flat insulating half-aches occur.

The problems discussed above only occur with isolation from Rohrleitungskrümmarn4 but not from straight pipe sections, as for the latter insulating half-shell pairs are known, which are located on the one dividing line are connected to each other by a hinge strip. The insulating half-shell pairs are also common for straight pipe sections already with a laminated outer protective jacket provided, so that no problems due to a relative displacement between the protective jacket and -Isolierhaibschalenpaar can occur. In the case of pipe elbows, however no technical solution known yet through which the above-mentioned Problems can be solved properly without exaggerating Bn Careful work and the corresponding expenditure of time on the part of an insulation tradesman requires.

The object of the invention is to create a compared to the prior the technology improved pair of insulating half-shells, together with a protective jacket, for the sheathing of pipe elbows, which means that the end faces of the insulating half-shell pair are flush is ensured after being pushed onto a pipe elbow and above In addition, there is also the possibility of protecting the protective jacket from the insulating half-ache pair to secure against relative displacement in industrial prefabrication.

This is achieved through the characteristics of the patent claim 1.

Due to the one-piece connection of the two insulating half-shells the specified point of the outer vertex is achieved that the insulating half-shell pair inside the protective jacket together with the latter without any relative displacement apart - and after being pushed onto a pipe elbow, also folded up again can be. The flush of the two end faces of the insulating half-shell pair is always guaranteed. But there is also the option of using the pair of insulating shells already in the industrial prefabrication within the protective jacket by a To fix the pin, which penetrated radially from the outside through the protective jacket is and penetrates the hinge web of the insulating half-shell pair. This When the protective jacket is opened, the plug pin can be used along with the pair of insulating half-shells contained therein not be uprooted.

The invention is explained in more detail below with reference to the drawing. 1 shows an exemplary embodiment of a pair of insulating half-shells according to the invention in the fully unfolded state without protective cover, in plan view of the later common axial half-shell contact surfaces, Fig. 2 is a section along the Line II-II of Fig. 1, Fig. 3 the Isolierhalbschaletpaar of Fig. 1 in the collapsed Condition, i.e. in use position, in connection, with an external Protective sheath, in plan view of the bane of curvature, with the protective sheath in dsr FIG. 4 shows the pair of insulating half-shells from FIGS. 1-3 in connection with the protective sheath in a partially sufficient to slide on Opened state in perspective view approximately parallel to the axis of curvature.

The insulating half-shells 1, 1 'shown in FIG. 1 have a conventional one Profile and are applicable to various types of elbows such as this.

already in the introduction to the description of the prior art was carried out. The special bed of the th insulating half-shell pair consists merely in the fact that both insulating half-shells 1, 1 'at their two outer vertices as well as there in the area of a later axial half-shell contact plane (in the Representation of Fig. 1 with the rapier plane collapsing) in one piece a thin hinge web 2 are connected to each other, the insulating half-shell pair 1, II is already in the industrial prefabrication in a protective jacket 3 (Fig 3 and 4) inserted. Around. sine rotation of the protective jacket 3 with respect to the Iaplier half-shell pair 1, 1 'to prevent the common axis of curvature, can - also in the industrial Prefabrication - a pin 4 through the apex of the protective spirit 3 and the hinge web 2 are guided.

Common materials are used for production.

For the pair of insulating half-shells 1, 1 ', polyurethane foam or - preferred - polyethylene foam can also be used. For the protective jacket 3 is it is best to use polyvinyl chloride film, as has been customary up to now. However, the invention is not subject to any restrictions with regard to the choice of material.

L e r s e i t e

Claims (1)

Isotier half-shell pair made of foam for pipe elbow patent claim Pair of insulating half-shells made of foam for sheathing pipe bends in connection with a hinged outer protective cover made of elastic plastic film, characterized in that both insulating half-shells (1, 1 ') än their two outer vertices and there in the area of a later axial half-shell contact plane in one Pieces are connected to each other by a thin hinge web (2).