CN204879227U - Heat preservation return bend of outer pillar of one shot forming - Google Patents

Abstract

The utility model discloses a heat preservation return bend of outer pillar of one shot forming, it includes outer pillar, heat preservation and return bend, outer pillar is a draw shaping, outer pillar suit outside the return bend, the heat preservation is filled outside between pillar and the return bend, it is big that this product bears pressure, difficult fracture, and it is effectual to keep warm, and the safe operation is reliable.

Description

The heat-preserving bent pipe of the outer pillar of once-through

Technical field

The utility model relates to a kind of heat-preserving bent pipe, particularly relates to the heat-preserving bent pipe of the outer pillar of a kind of once-through.

Background technique

At present, growing along with national economy, people's lives improve constantly, and central heat supply is deeply concerned, is classified as key construction project by country.Heat-insulating pipe fitting is important component part in heat supply pipeline, and pipeline configuration is outer pillar, thermal insulation layer, working pipe from outside to inside successively, and outer pillar, for protection thermal insulation layer is from erosion, supports the protection skin that tube core also can bear certain pressure.When working pipe is bend pipe, because the shape of bend pipe limits, outer pillar is welded, pillar surface forms seam outside, the pressure that can bear is caused to reduce, easy-rupturing, working life is short, again because thermal insulation layer is arranged between outer pillar and working pipe, causes outer pillar can be subject to the impact of thermal insulation layer when welding, then produce the welding of outer pillar not tight, namely there will be sealing difference, affect heat insulation effect, and be incubated uneven, more seriously in pipe network long-time running, potential safety hazard can be produced.

Model utility content

The purpose of this utility model is to provide the heat-preserving bent pipe of the outer pillar of a kind of once-through, in order to solve the deficiency that above-mentioned prior art exists.

In order to achieve the above object, technological scheme provided by the utility model is: the heat-preserving bent pipe of the outer pillar of a kind of once-through, and it comprises outer pillar, thermal insulation layer and bend pipe, and described outer pillar is that a draw is shaping, outer protective pipe sleeve is contained on bend pipe, and described thermal insulation layer is filled between outer pillar and bend pipe .

Further, described outer pillar is polyethylene material.

Further, described thermal insulation layer is polyurethane foam.

Further, described bend pipe is metal material.

Adopt technique scheme, the technique effect that the utility model produces has:

Outer pillar of the present utility model is once-through, does not have seam, has ensured the integral rigidity of outer pillar, not easy-rupturing, bears pressure large, good airproof performance, insulation layer thickness is even, is the heat-preserving bent pipe of a kind of high insulating effect, long service life, has ensured network security long-time running simultaneously.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Wherein: 1, outer pillar 2, thermal insulation layer 3, bend pipe.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described.

As shown in Figure 1, it comprises outer pillar 1, thermal insulation layer 2 and bend pipe 3, described outer pillar 1 is that a draw is shaping, its concentric locking collar is contained in outside bend pipe 3, thermal insulation layer 2 is polyurethane foam, full polyurethane foam is filled in hoop space outside between pillar 1 and bend pipe 3, forms the thermal insulation layer 2 of same thickness, and insulation evenly.

Further, described outer pillar 1 is polyethylene material.

Further, described bend pipe 3 is metal material.

Outer pillar of the present utility model is once-through, does not have seam, whole good rigidly, bears pressure large, not easy-rupturing, good seal performance, the heat insulation effect that can reach, and long service life, reliable, has ensured network security long-time running.

Finally it should be noted that, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.

Claims (4)

1. the heat-preserving bent pipe of the outer pillar of once-through, it is characterized in that: it comprises outer pillar (1), thermal insulation layer (2) and bend pipe (3), described outer pillar (1) is that a draw is shaping, outer pillar (1) is sleeved on bend pipe (3), and described thermal insulation layer (2) is filled between outer pillar (1) and bend pipe (3) .

2. the heat-preserving bent pipe of the outer pillar of once-through according to claim 1, is characterized in that: described outer pillar (1) is polyethylene material.

3. the heat-preserving bent pipe of the outer pillar of once-through according to claim 1, is characterized in that: described thermal insulation layer (2) is polyurethane foam.

4. the heat-preserving bent pipe of the outer pillar of once-through according to claim 1, is characterized in that: described bend pipe (3) is metal material.