CN201606584U - S-bending heat insulation steel pipe - Google Patents

Abstract

The utility model discloses an S-bending heat insulation steel pipe which comprises an S-bending steel pipe (1) and an insulating layer (2) outside the S-bending steel pipe (1). The S-bending heat insulation steel pipe is characterized in that the insulating layer (2) is externally sheathed with a plurality of sections of outer protecting pipes (3) welded mutually; and a heat shrinkage belt (4) is fixed outside the joint of the outer protecting pipes (3). When in manufacturing, the plurality of sections of outer protecting pipes are sequentially sheathed outside the S-bending steel pipe so as to form an S-bending outer protecting pipe, and then the joint surface of the outer protecting pipe is welded, thus forming an integrity. In order to reinforce the sealing effect, the heat shrinkage belt is used for packing the joint of the outer protecting pipe. After the outer protecting pipe is equipped, polyurethane foaming equipment conducts the polyurethane foaming filling on a gap between the outer protecting pipe and the S-bending steel pipe, thus forming the insulating layer by polyurethane materials. Therefore, the S-bending heat insulation steel pipe has the compact structure consisting of the outer protecting pipe, the insulating layer made of high-efficiency insulating materials, and the S-bending steel pipe, achieves the effects of convenient manufacturing, transportation and installation, is not easy to be damaged, and has good insulating effect.

Description

S bends insulating steel tube

Affiliated technical field

The utility model belongs to a kind of pipeline equipment part, a kind of specifically insulating steel tube.

Background technique

At present, in the pipeline equipment manufacture,, often to make the curved steel pipe of S according to the needs of actual conditions.But,, the curved insulating steel tube of S of moulding is not arranged as yet in the prior art owing to be subjected to the influence of shape.In practical operation, after the curved steel pipe of S being installed,, like this, brought many troubles to execute-in-place at its outer package thermal insulation layer, inefficiency, labor intensity is big, and heat insulation effect is poor.

Summary of the invention

The purpose of the utility model is to overcome the above-mentioned deficiency of prior art, provides a kind of S to bend insulating steel tube, and its compact structure is easy to install and use, high insulating effect.

For reaching above-mentioned purpose, the utility model is taked following technological scheme: the utility model includes: the thermal insulation layer of curved steel pipe of S and outside thereof, it is characterized in that: be set with the outer pillar that plurality of sections is welded to each other in the thermal insulation layer outside, pillar joint outer fixing has shrink belt outside.

The utility model is taked technique scheme, have following beneficial effect: the utility model is set with the outer pillar that plurality of sections is fixedly linked at outermost, during fabrication, to be sleeved on the curved steel pipe of S outside with every section outer pillar of the curved relative shape of S successively earlier, form the outer pillar of S bending, interface with the outer pillar of each section welds again, makes it to become integral body.Be the enhanced leaktightness effect, by the outer pillar joint of shrink belt packaging protecting.After having possessed outer pillar, thermal insulation layer of the present utility model can adopt polyurethane material, implements polyurethane foam by the gap between external pillar of polyurethane foam equipment and the curved steel pipe of S and fills, and forms thermal insulation layer.Like this, the utlity model has the compact structure that the thermal insulation layer that formed by outer pillar, thermal insulation material, the curved steel pipe of S are formed, reached manufacturing, transportation, effect easy for installation, and not fragile, high insulating effect.

Description of drawings

Below in conjunction with drawings and Examples the utility model is elaborated:

Fig. 1 is the utility model embodiment's a structure diagram.

Mark among the figure: 1-S bends steel pipe, 2-thermal insulation layer, the outer pillar of 3-, 4-shrink belt.

Embodiment

By shown in Figure 1, the utility model includes: the thermal insulation layer 2 of curved steel pipe 1 of S and outside thereof, be set with the outer pillar 3 that plurality of sections is welded to each other in thermal insulation layer 2 outsides, and pillar 3 joint outer fixing have shrink belt 4 outside.

Thermal insulation layer 4 of the present utility model is a polyurethane, and outer pillar 3 is a high density polyethylene (HDPE).

Claims (2)

1. a S bends insulating steel tube, it includes: S bends the thermal insulation layer (2) of steel pipe (1) and outside thereof, it is characterized in that: be set with the outer pillar (3) that plurality of sections is welded to each other in thermal insulation layer (2) outside, pillar (3) joint outer fixing has shrink belt (4) outside.

2. a kind of S according to claim 1 bends insulating steel tube, it is characterized in that: thermal insulation layer (4) is a polyurethane, and outer pillar (3) is a high density polyethylene (HDPE).

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