CN201772200U

CN201772200U - Insulating tube

Info

Publication number: CN201772200U
Application number: CN2010202623979U
Authority: CN
Inventors: 李志雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-16
Filing date: 2010-07-16
Publication date: 2011-03-23
Anticipated expiration: 2020-07-16

Abstract

The utility model relates to an insulating tube which comprises an inner tube, a physically foamed insulating layer and an outer protection layer, wherein the inner tube, the physically foamed insulating layer and the outer protection layer are arranged sequentially from inside to outside and compounded together, the outer wall of the inner tube is compounded with the inner wall of the physically foamed insulating layer together, and the outer wall of the physically foamed insulating layer is compounded with the inner wall of the outer protection layer together. Bubble bodies of the physically foamed insulating layer adopt a physical foaming way (gas), and as the bubble bodies have closed bubble structures, the heat insulation capacity of the bubble bodies is increased by a plurality of times compared with that of the pore structures using a chemical foaming way (a chemical foaming agent). In addition, as the bubble bodies in the physically foamed insulating layer are the bubble bodies formed by filling the bubbles with nitrogen, the coefficient of heat conductivity of the nitrogen is low, and the nitrogen is wide in source and cheap is price, the bubble bodies formed by filling the bubbles with the nitrogen have good heat insulation effect and quite poor capacity of heat conduction, the foamed layer also hinders the external heat to enter the tube while avoiding the heat loss of the fluid in the tube, and plays a role in heat insulation for the fluid in the tube.

Description

A kind of thermal insulation pipe

Technical field

The utility model is a kind of heating and refrigeration system that is widely used in municipal administration, building etc., and is used for the plastic composite pipe on the transporting system of oil, gas, and particularly a kind of insulating plastic pipe composite pipe belongs to the innovative technology of plastic composite pipe.

Background technique

Plastic composite pipe is owing to have good corrosion resistance, the performance of excellences such as connection is reliable, convenient is so be widely used in the heating and the refrigeration system of municipal administration, building etc., and the transporting system that is used for oil, gas, but, the shortcoming that common plastic composite pipe exists is that heat insulation effect is not good enough, especially for the situation of middle and long distance conveyance fluid, its energy scatters and disappears serious, has caused the waste of the energy.

The model utility content

The purpose of this utility model is to consider the problems referred to above and a kind of high insulating effect, energy-efficient thermal insulation pipe is provided.The utility model good corrosion resistance, cost is low, in light weight, fluid resistance is little, convenient and practical.

The technical solution of the utility model is: thermal insulation pipe of the present utility model; include interior pipe, physical blowing thermal insulation layer, the external protection of arranging successively from inside to outside and being combined with each other; wherein the inwall of the outer wall of interior pipe and physical blowing thermal insulation layer is combined with each other, and the outer wall of physical blowing thermal insulation layer and the inwall of external protection are combined with each other.

Pipe is polypropylene random copolymer pipe in above-mentioned.

Pipe is heat-resisting polyethylene tube in above-mentioned.

Pipe is aluminium-plastic composite pipe in above-mentioned.

Pipe is flexible pipe in above-mentioned.

Above-mentioned external protection is a plastic layer.

The foam of foam in the above-mentioned physical blowing thermal insulation layer for forming with nitrogen filling bubble.

The utility model is owing to adopt the structure that is provided with the physical blowing thermal insulation layer between interior pipe and external protection; because the foam of physical blowing thermal insulation layer is to adopt physical blowing mode (gas), have the heat-insulating capability raising several times of the bubble structure of sealing because of foam than the open-celled structure of chemical blowing mode (CBA).In addition, the gaseous species of filling in the bubble of sealing also directly influences the heat-insulating capability of foam, the foam of foam in the utility model physical blowing thermal insulation layer for forming with nitrogen filling bubble, (0 ℃ of the thermal conductivity of air, kcal/m.h. ℃ be 0.021), and the thermal conductivity of nitrogen is 0.0172 in the air, and nitrogen wide material sources, low price, therefore, with its good heat-insulation effect of foam of nitrogen filling bubble formation, the non-constant of the capacity of heat transmission, so foaming layer has also hindered outside heat and has entered in the pipe when avoiding the scattering and disappearing of tube fluid heat, and has played the insulation effect to tube fluid.The utility model is a kind of good corrosion resistance, the thermal insulation pipe that cost is low, in light weight, fluid resistance is little, convenient and practical.

Description of drawings

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

Embodiment

Embodiment 1:

Structural representation of the present utility model as shown in Figure 1; include interior pipe 3, physical blowing thermal insulation layer 2, the external protection 1 of arranging successively from inside to outside and being combined with each other; the outer wall of pipe 3 and the inwall of physical blowing thermal insulation layer 2 are combined with each other wherein, and the inwall of the outer wall of physical blowing thermal insulation layer 2 and external protection 1 is combined with each other.In the present embodiment, interior pipe 3 can be polypropylene random copolymer pipe, i.e. the PPR pipe; Or be heat-resisting polyethylene tube, promptly PERT manages; Or be aluminium-plastic composite pipe, or be flexible pipe.

In the present embodiment, above-mentioned external protection 1 is a plastic layer.

For reaching reasonable effect of heat insulation, the foam of the foam in the above-mentioned physical blowing thermal insulation layer 2 for forming with nitrogen filling bubble.

Claims

1. thermal insulation pipe; it is characterized in that including interior pipe (3), physical blowing thermal insulation layer (2), the external protection (1) of arranging successively from inside to outside and being combined with each other; the outer wall of pipe (3) and the inwall of physical blowing thermal insulation layer (2) are combined with each other wherein, and the inwall of the outer wall of physical blowing thermal insulation layer (2) and external protection (1) is combined with each other.

2. thermal insulation pipe according to claim 1 is characterized in that above-mentioned interior pipe (3) is polypropylene random copolymer pipe.

3. thermal insulation pipe according to claim 1 is characterized in that above-mentioned interior pipe (3) is heat-resisting polyethylene tube.

4. thermal insulation pipe according to claim 1 is characterized in that above-mentioned interior pipe (3) is aluminium-plastic composite pipe.

5. thermal insulation pipe according to claim 1 is characterized in that above-mentioned interior pipe (3) is flexible pipe.

6. thermal insulation pipe according to claim 1 is characterized in that above-mentioned external protection (1) is a plastic layer.

7. according to each described thermal insulation pipe of claim 1 to 6, it is characterized in that the foam of foam in the above-mentioned physical blowing thermal insulation layer (2) for forming with nitrogen filling bubble.