Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L59/00—Thermal insulation in general
  • F16L59/14—Arrangements for the insulation of pipes or pipe systems
  • F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L59/00—Thermal insulation in general
  • F16L59/06—Arrangements using an air layer or vacuum
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L59/00—Thermal insulation in general
  • F16L59/08—Means for preventing radiation, e.g. with metal foil

Definitions

• the invention relates to a pipeline for the transport of liquid and / or gaseous media or suspensions, with at least one medium pipe, which preferably consists of metal or plastic, and at least one casing, the medium pipe inside the casing (s) forming an air gap between the casing and the medium pipe is axially displaceably mounted on sliders.
• the axial displaceability is not so important on the ready-installed pipeline string composed of several sections and also not on the individual sections. It is primarily necessary for inserting the medium pipe into the interior of the casing when producing the shots of the pipeline.
• Such pipelines are used primarily for the transport of media that require heat insulation or whose heat insulation is expedient, for example as a per-heating, coolant or oil line.
• the sliders avoid thermal bridges between the casing and the medium pipe.
• the casing normally has an outer protective tube, for example made of Easer or asbestos cement, concrete, plastic, ceramic material, metal or the like.
• a central inner tube or a plurality of such inner tubes can be connected to the outer protective tube and distributed over the cross section of the outer protective tube.
• the cavity between the outer protective tube and the inner tube is foamed, for example, with an elastic plastic foam, preferably polyurethane foam, as a result of which a solid casing is formed with a cavity in the correct position for receiving the medium tube.
• the jacket is particularly good heat insulation, and the air gap mentioned at the beginning between the jacket and the medium pipe provides additional heat insulation.
• One of the Like pipeline can be found in the application WO 83/01824.
• each slider is designed as its own skid in the form of a corrugated band to form inner and outer support surfaces.
• Several such skids must each be distributed in the correct position around the respective cross section of the medium pipe and clamped there by means of a common tensioning band on the outer circumference of the medium pipe. Clamping the skids along support surfaces located on the carrier pipe also results in a certain heat transfer via the skids.
• the object of the invention is to provide a pipeline in which the air gap between the medium pipe and the casing is ensured in a simpler manner. It consists in a pipeline of the type mentioned in that the sliders are held at the joints of the individual shots of the sheathing, preferably extending between the shots with a radially outer section and forming the support for the medium pipe with a radially inner section. By this arrangement of the sliders, they are secured against axial displacement and their attachment is considerably simplified. For example, in the case of a covering with a layer of polyurethane foam, it can be foamed or inserted therein, or in the case of a covering with an inner tube, it can rest with a shoulder at its end or can grip this end in a form-fitting manner.
• the possibility is created to design the sliders so that they also serve to center the shots of the casing adjoining each other at the joints. This is particularly important in the case of pipelines with a plurality of medium pipes arranged off-center within the casing, since the shots of the casing must also connect to one another in the correct rotational position.
• a single annular slider is preferably used at each joint of the shots of the casing.
• the correct attachment to the casing is particularly simple.
• the annular sliding piece preferably grips the ends of the inner tubes with one shoulder each.
• the sliding pieces or the ring-shaped sliding pieces can consist of different materials, in particular of plastic, with the necessary sliding properties at the support points of the medium pipe.
• the ring-shaped slider is formed by a concentrically arranged to the casing sheet metal sleeve, the jacket is inserted on or in the ends of the shots to be connected to the sheathing and in its central region, the outer reaching between the shots and which has inner sections extending to the outer surface of the carrier pipe in a form of punched-out portions that are bent out of the jacket plane.
• the metal sheet sleeve is expediently foamed with its jacket on one side in the plastic foam of one shot and inserted on the other side into the plastic foam of the other shot.
• the edge to be inserted can, if necessary, be designed as a cutting edge.
• the sheet metal collar prefferably be inserted with the respective side of its jacket into ring grooves provided at the joints of the shots.
• parallel longitudinal incisions can advantageously be punched into the central area of the strip-shaped sheet metal blank thereof and the area located between the longitudinal incisions can be arched inward in a bridge shape.
• this can be pressed outward in a self-tightening manner to the inner surface of the sheathing.
• an arrangement in the vicinity of the joints of the individual shots of the casing will be preferable.
• the sliders each abut against the splashing of the medium pipe, so that fixed points are created for the sheathing along the medium pipe.
• Another embodiment consists in that in the lower region of the circumference of the casing at least two sliding pieces are glued at a distance to the abutting surface of at least one of the abutting shots of the casing.
• FIGS. 5 to 9 each show different embodiments in a ring shape
• the medium pipe is denoted in each case by 1 and the casing as a whole by 2.
• the casing 2 consists of an outer protective tube 3, a plastic foam layer 4 and an inner tube 5.
• the plastic foam layer 4 protrudes from the ends of the protective tube 3 and the inner tube 5 at the butt ends. This reliably avoids a gap between the plastic foam layers 4 in the butt region that is unfavorable for the thermal insulation.
• the gap between the ends of the protective tubes 3 is covered by a sleeve 7 which bears against the protective tubes 3 via a seal 8.
• An air gap is formed between the casing 2 and the medium pipe 1 with the aid of sliding pieces 9.
• FIGS. 1 to 4 each show a special arrangement of such a slider 9, the sliders being designated 9 'to 9 "" and in all cases being in the form of a single ring for a joint.
• the ring-shaped slide piece 9 'or 9 extendends with a radially outer section between the shots of the casing 2 and forms a support for the carrier pipe 1 with a radially inner section doing so, with one shoulder the ends of the inner tubes 5.
• the slide 9 also lies laterally with the radially inner section on ring flanges 10 of the medium pipe 1.
• the annular slide 9 '' 'visible in FIG. 5 has no radially outer section with which it extends between the shots of the casing 2, but is self-tightening due to a special shape which is explained in more detail below with reference to FIG pressed outwards against the inner surface of the casing 2.
• the annular slide 9 'or 9 "with the section extending into the plastic foam layer 4 can be foamed there on one side and inserted there on the other side.
• Fig. 5 shows an annular slider 9, which is formed by a concentrically arranged to the casing 2 sheet metal sleeve.
• the jacket of the sheet metal sleeve can be placed on or in the ends of the shots of the jacket 2 to be connected. In its central area it points between the shots of the casing 2 Extending outer and the inner sections reaching to the outer surface of the medium tube 1 in a form of punched-outs 11 bent out of the jacket plane. It is aieiit that in the central region of the strip-shaped sheet metal blank of the metal sheet sleeve parallel longitudinal incisions are punched and that the area located between the longitudinal incisions is arched inward in a bridge shape.
• Fig. 6 shows a similar annular slider as Fig.5.
• the slide 9 shown in FIG. 6 can, however, be compressed by a slot 12, which is bridged by the bridge-shaped projections 11, and elastically tensions again after the compression.
• Such an annular slider 9 can be used according to FIGS. 3 and 4.
• the edges of the punched-out punched-out cutouts 11 are expediently bent somewhat outwards in order to avoid sharp edges.
• FIG. 7 shows an annular slide 9 with different shapes of punched-out punched-out holes 11.
• FIG. 8 an annular slide 9 with oval-shaped supports for a medium pipe 1 is shown, the lateral movement of which is to be made possible.
• FIG. 9 shows an annular sliding piece 9 with a rectangular outer contour, as can be used in the case of square envelopes 2 of the medium pipe 1.
• FIG. 9 shows an annular sliding piece 9 with a rectangular outer contour, as can be used in the case of square envelopes 2 of the medium pipe 1.
• all combinations of different external and internal shapes of the ring-shaped sliding pieces are possible as required.

Applications Claiming Priority (2)

Publications (1)

Family

ID=3556225

Family Applications (1)

Country Status (10)

Families Citing this family (47)

Family Cites Families (26)

• 1983
  • 1983-10-31 AT AT0384683A patent/AT391932B/de not_active IP Right Cessation
• 1984
  • 1984-10-31 US US06/752,336 patent/US4694865A/en not_active Expired - Fee Related
  • 1984-10-31 EP EP84903924A patent/EP0162863A1/de not_active Withdrawn
  • 1984-10-31 WO PCT/AT1984/000038 patent/WO1985002003A1/de not_active Application Discontinuation
  • 1984-10-31 HU HU85190A patent/HUT42618A/hu unknown
  • 1984-10-31 AU AU35562/84A patent/AU3556284A/en not_active Abandoned
  • 1984-10-31 JP JP59504135A patent/JPS61500273A/ja active Pending
• 1985
  • 1985-06-28 SU SU853915004A patent/SU1456024A3/ru active
  • 1985-06-28 DK DK294785A patent/DK294785D0/da not_active Application Discontinuation
  • 1985-07-01 FI FI852598A patent/FI852598L/fi not_active Application Discontinuation

Non-Patent Citations (1)

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