RU2000514C1 - Protective heat-insulating jacket of branch pipes - Google Patents

Abstract

SUMMARY OF THE INVENTION: two plastic half-molds cover thermal insulation on the longitudinal supporting edges of which, respectively, elements of a snap-on tongue-and-groove joint are made in the form of grooves and protrusions located therein. On the outer walls of the protrusions and grooves, pins and oblique grooves, respectively, are formed into mutual engagement. The grooves and protrusions are alternately arranged at half the length of each edge of the mold half. All tongue and groove elements are symmetrically mirrored. 3 silt

Description

The invention relates to thermal insulation of pipelines, namely to the installation of thermal insulation structures of pipelines of industrial facilities, housing and social facilities located inside and outside the premises and operated at temperatures from minus 45 to plus 60 ° C and can be used in construction and energy.

A prior art lining of thermally insulated bent pipes is carried out by means of two half-shells which are joined together on the pipe elbow by means of rivets. The half-shells are a half-piece cut in half, made by stamping from polystyrene (see, for the taste of France, No. 2291444 of 11/15/74, class F 16 L 59/16). The disadvantages of this design are the high complexity of manufacturing half-shells and low installation performance.

The technical solution closest to the invention is a plastic protective shell consisting of two half-shells, obtained by casting or extrusion, and connected during installation. The fastening is carried out by cast brackets made at the ends of the shell half-shells, moreover, on one half-shell, the brackets are convex in shape and concave in the other. The joint between the half-shells is filled with sealant (see laid out for the taste of Great Britain No. 2186338 of 02/06/86, according to class F 16 L 59/00). The disadvantages of the known design are the high complexity of manufacturing and low productivity of installation due to the fact that the half-shells of the shell are made with a different shape of the lock, which requires two expensive injection molds during their manufacture, and during installation - the selection of half-shells with convex and concave shapes

WITH

U O O O 01

about

my staples and to ensure the tightness of the joint - the expense of expensive sealant.

The aim of the invention is to reduce the complexity of the manufacture of the containment and increase the productivity of the installation.

. This is achieved by the fact that in the protective sheath of the pipe bends, consisting of two plastic half-shells connected by a lock fastening, each half-shell is made in such a way that a protrusion is located on its edges of joints, on one side of the axis of symmetry, on the other - a groove, and the lock fastening consists of pins and oblique grooves, moreover, the pins are made together with the protrusions of the half-housing, and the oblique grooves are made with grooves.

 The implementation of lock-type half-shells in this way ensures interchangeability and reduces the complexity of manufacturing due to the use of a single injection mold, as well as increases the productivity of installation work, since there is no need to select half-shells and the use of sealant.

In FIG. 1 shows a protective shell, general view, section: in FIG. 2 is a view along arrow A in FIG. 1; in FIG. 3 - oid along arrow B in FIG. 2.

The protective shell consists of two identical interchangeable half-shells 1, made by injection molding of polypropylene, having a curved shape and internal dimensions corresponding to the external dimensions and isometrics of the insulated pipeline. A groove 2 is made on the outer and inner edges of the junction surfaces of each half-housing 1, from the beginning of the edge to its middle, and a protrusion 3 is made from the middle to the end of the edge. Half-cases 1 are made with lock fasteners in the form of two elements: pins 4 and oblique grooves 5 2. On the outer edge of the half-shell 1, on the one side of the axis of symmetry, there are two pins 4, and on the other two oblique grooves 5. On both sides of the oblique grooves 5 there are technological grooves 6, ensuring easy entry of the pin 4 into the oblique groove 5. On the

A pin 4 and one oblique groove 5 are located on the inner edge of the half-shell. At the transverse end edges of the half-shells, at the transition of the curved surface to a cylindrical, there are grooves-ridges 7 that fix the installation location of the bandage when attaching the protective sheath of the rectilinear section of the insulated pipeline, and also prevent moisture under the coating during atmospheric exposure x.

The installation of the containment is as follows.

Two half-shells 1 are put on the pipe insulation thermal insulation layer and connected together in the joint plane passing through the pipe axis. In this case, the protrusions 3 enter the grooves 2, and the pins 4, respectively, in the oblique grooves 5. Under the action of a small force, the half-shells are closed. Thanks to the lock fastening, both half-shells 1 are locked and the reliability and tightness of the thermal insulation sheath is ensured.

The technical and economic effect consists in reducing the complexity of manufacturing and reducing the assembly time of the insulating structure due to the fact that the half-shells of the protective shell are made

interchangeable in one injection mold.

No special installation tool or additional sealing means are required for mounting such a shell.

Claims (1)

We invent the formula 1 The protective shell of the heat insulation of the pipe bends, containing two plastic half-molds covering the thermal insulation, on the longitudinal supporting edges there are respectively made elements of a snap-on tongue-and-groove joint in the form of grooves and protrusions located in them, characterized in that the outer ones of the protrusions and grooves are formed engagement respectively are pins and oblique grooves, and grooves and tongues of the tongue-and-groove joint are alternately arranged at half length of each edge of the half-mold, moreover all sheet pile joints are mirrored symmetrically. 7 HSOOOS FIG. 3.