DD281645A5 - BENDABLE, HEAVY-DUTY MANTEL TUBE - Google Patents

Abstract

The invention relates to a bendable, heat-insulated jacket pipe component, which is used with other similar axially connected preferably used as a buried casing pipeline in the district heat supply and has the advantage of avoiding obstacles in the route through relatively short horizontal or vertical direction changes. Naturally, the jacket pipe component can also be connected to differently configured heat supply lines. The jacket tube component consists of two coaxially arranged corrugated tubes with an intermediate Waermeinsemmung, wherein the elastically mounted corrugated metallic inner tube via connections for force-locking connection and the Hüllrohr is designed so that it is either force or formschlüssig connected to the sheath of the adjacent casing tube component {can be bent. waermegedaemmt; Casing component; Casing pipe; Length / Richtungsaenderung; flexible jacket tube}

Description

For this 4 pages drawings

Field of application of the invention

The invention relates to a bendable, wirmegedämmtes Mantelrohrb iuteil, from the same with similar jacket pipe components connected axially a biegbaie, preferably suitable for the Vettailung of heating and hot water line can be made, which allows it observing minimum bending radii un laying rules, obstacles in the route , such as intersecting pipelines and cables, third-party systems, seams, etc., to handle with little effort.

Characteristic of the known state of the art

Bendable, thermally insulated jacket pipes for district heating supply, which can be claimed in a comparable manner are known from DE 1525658, DE 31.12101 A1 and DE 3307865A1. These technical solutions have so far on a completely different structure, as their coaxially arranged items frictionally, n.ich the principle of the external expansion compensation are connected to each other and therefore behave differently under operating and laying conditions. The solutions mentioned, which are manufactured in long lengths and transported drummed, have the following disadvantages: The production and transport are very expensive; due to the interaction between the individual parts no clear load assumptions can be made; the non-positive structure leads to confusing cause-and-effect relationships that are at the expense of component safety; The thermally insulating PUR foam, which produces the composite, not only appears thermally but also loaded to its limit by shear, tensile and compressive forces. Another solution, EP 0097640, belongs to the group of pipe constructions which are completely constructed of plastic elements and therefore are not suitable for standard heating water media; they do not correspond to the object task of this invention.

Object of the invention

The invention has the aim to provide a universally applicable, reliable acting, cost-manufacturable and transposable bendable, heat-insulated component, which can be connected with the same components to form a casing pipe and which allows compliance with defined Verlgeregeln on special components for changing direction , Strain compensation and fixation to dispense.

Explanation of the essence of the invention

The invention has as its object to provide a clearly resilient, easy to manufacture, safe functioning, for tempered media, preferably hot water, usable, flexible, thermally insulated jacket pipe component which can be coupled with the same components to casing pipes and special components for changing direction, strain compensation and Fixation omitted.

According to the invention the object is achieved by the elastic properties of corrugated pipes are used.

The jacket tube component consists of a flexible, a Dehnraum enclosing cladding tube and a resiliently mounted in the cladding tube, bendable, corrugated, provided with stabilizing Drahtumflechtung heat-insulated medium pipe. The Hüllrohrenden are either designed as a special Hüllrohranschlußteile or provided with each similar verschieLbaren outer connecting elements.

The cladding consists of corrugated plastic pipe or metallic corrugated pipe, which is resistant to corrosion by coating

o. is protected.

The medium pipe is a corrugated metal tube, which is surrounded for stabilization with at least one wire mesh. It is surrounded with elastic insulating material so that between the insulated medium pipe and cladding still a small air gap remains. The two ends of the carrier pipe are frictionally connected to the media pipes of the adjacent jacket pipe components.

The elastic storage of the medium pipe consists in a first embodiment of the corresponding thick-shaped, the medium pipe enveloping insulation layer and Dämmstüffschicht surrounding at defined locations support rings, which consist of hollow sections.

The elastic storage of the medium pipe consists in a second embodiment of the corresponding thick-shaped, the medium pipe enveloping insulating layer and this insulating layer at defined locations surrounding support rings, which in the form of two half-shells z. B. are formed of foam. Hüllrohrseitig are in the support rings at least three evenly distributed over the circumference, axially extending, abrasion resistant, temperature resistant skids inserted.

The special Hüllrohranschlußteile are designed as a push-in socket connection with sealing shrink sleeve, the connection can be frictionally designed.

The respective similar sliding outer connecting elements each consist of sleeve sleeve !!, the double-sided ring. 'Palt are closed by endless rubber profiles or elastic sealant.

A casing pipe constructed from these flexible, thermally insulated jacket pipe components can dispense with special components for directional change, expansion compensation and fixation when the laying rules are defined.

In the connection of the casing pipe components at the installation site, the advantage is exploited that both the outer casing tube can be axially displaced against the elastically mounted heat-insulated inner pipe as well as the elastic inner pipe against the outer casing pipe. Thus, in order to ensure the working space for the frictional connection of the inner tubes of two jacket tube components, in each case an inner tube with a correspondingly extended weld-on end or flange is used in the first jacket tube component. After connecting the media-carrying inner tubes and post-damaging the joint area, the cladding tube is pushed toward the other and non-positively connected with each other via its weld-on or flange ends

connected. Due to the one-sided overlaying of the cladding tube, the collision is closed on the one jacket tube component end, while the required working space for connecting the following inner tubes is created at the opposite end. The same procedure is used when using form-fitting cladding tube connections, wherein the thrust sleeve and its sealing elements are previously pushed onto one of the two ends of the cladding tube in a known manner

embodiment

The invention will be explained below using an exemplary embodiment.

1 shows the cross section of the bendable thermally insulated jacket tube component in a first embodiment. FIG. 2 shows the longitudinal section associated with FIG

Fig. 3: shows the cross section of the bendable, heat-insulated Mantelroh components in a second embodiment Fig.4 shows the longitudinal section associated with FIG. 3

Fig. 5: shows a first embodiment of the connection of similar bendable, thermally insulated jacket tube components. Fig. 6: shows a second embodiment of the connection of similar bendable, thermally insulated jacket tube components

The bendable, thermally insulated jacket tube component consists of a corrugated, metallic carrier tube enveloped with stabilizing wire mesh 1, which is provided with fiber-like insulation material 2 in the form of tubular shells, mats or the like. surround

The medium pipe 1 is surrounded in a first embodiment at certain intervals by support rings 3, which consist of metallic corrugated hollow sections, which are formed as a closed ring. They support the medium pipe 1 so supported against the cladding tube 4.

The medium pipe 1 is surrounded in a second embodiment at certain intervals by support rings S, consisting of two

fighter divided, circular cylindrical shells β made of PUR foam. Its inside diameter is smaller than that

Outer diameter of the fibrous insulation 2. The half-shells 6 have at their outer edge at an angle of 90 ° arranged skids 7 made of plastic, up to half

are embedded in the half-shells 6.

The two half-shells are slipped over the fibrous insulation 2 and together by gluing o. Ä. M.

connected, wherein the fibrous insulation 2 is slightly compressed due to the different diameters.

In Figure 5 is a first embodiment of the compound of similar flexible, thermally insulated jacket pipe components in Longitudinal section shown. The corrugated medium pipe 1 with mesh of the jacket pipe component and the medium pipe 8 to be connected Jacket tube components are non-positively connected by welding, which required for welding Working space is created by after a special assembly technology, the media tubes 1 and 8 and the ducts. 4

or 9 are shifted against each other in the axial direction, so that the media tubes 1 and 8 of both jacket tube components from the respective sheaths 4 and 9 protrude.

The medium pipe joint 10 is surrounded by a fibrous insulating material 11. The ends of the two sheaths 4 and 9 are formed as smooth tube sleeves 12, wherein one end of a sleeve-like Extension owns. The connection between the ducts 4 and 9 is made by the cladding tube 8 dos last laid Casing tube component is pushed to the opposite cladding tube, woboi medium pipe and cladding tube turn

move against each other in the axial direction and an offset of Mediumrohrstoß and Hüllrohrstoß arises. The connection between the ducts 4 and 9 is designed as a plug-in socket, which can be additionally welded. The

Junction of the cladding is surrounded by a shrink sleeve 13. In FIG. 6, a second embodiment of the connection of similar bendable, thermally insulated jacket tube components is shown

shown in longitudinal section.

The corrugated media tubes 1 and 8, which are longer than the cladding tubes 4 and 9 and with both Anschweißenden from the Cladding tubes 4 and 9 protrude, are non-positively connected by welding. The medium pipe joint 10 is surrounded by a fibrous insulating material 11. The ends of the corrugated sheaths 4 and 9 are made without connection. The connection between the ducts 4 and 9 of the two to be connected, bendable, thermally insulated Casing pipe components is protected by a cylindrical, metallic coating against corrosion by coating o. Ä. M. protected Slip sleeve 14 made. The two end faces between the flexible sheaths 4 and 9 and the Thrust sleeve 14 are filled with an elastic sealant 15.

Claims (6)

1. Bendable, thermally insulated jacket pipe component for building flexible, heat-insulated casing pipes, characterized in that the jacket pipe component consists of a bendable, a Dehnraum enclosing cladding and axially and radially movably arranged in the cladding tube bendable, thermally insulated, stabilized, elastically mounted medium pipe and the Hüllrohrenden either are designed as special Hüllrohranschlußteile or provided with each similar sliding outer connecting elements. 2. Bendable, thermally insulated jacket pipe component according to claim 1, characterized in that the cladding tube of corrugated plastic or metallic, against corrosion by coating o. m. protected corrugated pipe. 3. Bendable, thermally insulated jacket pipe component according to claims 1-2, characterized in that the medium pipe is corrugated, surrounded with at least one stabilizing wire mesh and surrounded by an elastic, preferably fibrous insulation material so that between the insulated medium pipe and cladding tube still sees a small air-gap , Λ. Bendable, thermally insulated jacket pipe component according to claim 1-3, characterized in that the elastic support of the medium pipe from the corresponding thick designed, the medium pipe enveloping insulating layer and the insulating layer at defined locations wrapped around, formed as a support rings hollow sections. 5. Bendable, thermally insulated jacket pipe component according to claims 1-3, characterized in that the elastic support of the medium pipe from the correspondingly thick, the medium pipe enveloping insulating layer and surrounding the insulating layer at defined locations support rings in the form of two half shells, z. B. foam, is in the support rings hüllrohrseitig at least three evenly distributed over the circumference, axially extending, abrasion resistant, temperature resistant skids are inserted. 6. Bendable, thermally insulated jacket pipe component according to claim 1-4 or 1-3 and 5, characterized in that the special Hüllrohranschlußteile consist of frictionally formable push-in socket connection with shrink sleeve. 7. Bendable, thermally insulated jacket pipe component according to claim 1-4 or 1-3 and 5, characterized in that each identical, movable outer connecting elements each consist of thrust sleeves, the double-sided annular gaps are closed by endless rubber profiles or elastic sealant.