CN203594891U

CN203594891U - Solar interlayer thermal insulation pipe

Info

Publication number: CN203594891U
Application number: CN201320460941.4U
Authority: CN
Inventors: 蒙献芳; 梁志坚; 梁红芳
Original assignee: GUANGXI CHAOXING SOLAR ENERGY TECHNOLOGY Co Ltd
Current assignee: Guangzhou Guangyi stainless steel products Co., Ltd.
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2014-05-14
Anticipated expiration: 2023-07-31

Abstract

The utility model discloses a solar interlayer thermal insulation pipe, which is characterized in that the solar interlayer thermal insulation pipe is a double-layer pipe, wherein a hard foam thermal insulation layer is filled in an interlayer between an outer pipe and an inner pipe, a heat reflection layer is plated on the outer wall of the outer pipe and hot water flows through inner holes of the inner pipe. With the interlayer thermal insulation pipe in the utility model, defects that thermal dissipation is serious in a former solar water tank connecting pipe and an outlet pipe are overcome, thermal insulation effect is greatly increased and thus heat insulation time of solar hot water is prolonged.

Description

Solar sandwich thermal insulation pipe

Technical field

The utility model relates to a kind of hot water heat insulating pipe, is specifically related between a kind of solar energy hot water tank to connect and the thermal insulation pipe of hot water outlet.

Background technique

At present in order to improve the thermal efficiency of solar water heater, someone starts to have designed classification water tank, between water tank, adopt hot-water line to connect, high-temperature water and low temperature water are separated, the hot-water line connecting is exposed in air, make to cause larger thermal loss, in addition, when next outdoor to user's hot-water line approach from hot water tank, also there is larger thermal loss, so selecting of hot-water line is a very important problem, for the hot water heat that can guarantee pipe the inside does not run off, also to stand the dual test of outdoor low temperature and high temperature, therefore people are mainly studied aspect selection, but the selection of material only can reduce the heat conduction of tube wall, some thickening tube walls, but thermal loss is in the same old way very serious, in winter, because the thermal loss of water pipe even reduces by 10 ℃, greatly waste the energy, in order to reduce from hot water tank next to the thermal loss of user's hot-water line, people wrap up tube surface with heat insulating cloth, the defect of this method is: install cumbersome, to be coated heat insulating cloth temporarily, because artificial coated making has larger space between thermal insulation layer and pipeline outer wall, so the effect of insulation is not ideal enough, still there is larger energy to leak, owing to existing energy to leak, so safe not, particularly the in the situation that of heat insulating cloth breakage, the working life that is easy to that the security incidents such as scald or frostbite occur and shortens thermal insulation pipe, and the heat insulating cloth that is exposed to outside is also difficult to stand low temperature and rainy invasion, therefore, how to guarantee the thermal loss focus that still scientist studies at present of solar water heating pipe.

Summary of the invention

The purpose of this utility model is that the thermal loss in order to overcome existing solar water heating pipe designs a kind of solar sandwich thermal insulation pipe compared with large shortcoming.This laminated heat-preserving pipe has overcome solar water container connecting tube in the past and the outer pipe serious shortcoming of dispelling the heat, and has greatly improved heat insulation effect, thereby makes the heat holding time of solar water.

The technical solution of the utility model is achieved in that

Solar sandwich thermal insulation pipe, is characterized in that: it is bimetallic tube, and the Sandwich filling between outer tube and inner tube has rigid foam thermal insulation layer, and outer tube outer wall is coated with one deck heat-reflecting layer, and hot water is walked the endoporus of inner tube.

Described rigid foam is polyurethane hard foam.

Described bimetallic tube is polypropylene tube or PPR pipe (PPR is the random copolymer of propylene and ethene).

Described heat-reflecting layer is aluminium film, plates one deck aluminium film in the outside of polypropylene tube or PPR pipe.

The laminated heat-preserving pipe that the utility model is above-mentioned, can be used as heat supply water pipe, supplies cold water pipe, steam tube, also can be used as the pipeline of specific use.

The beneficial effects of the utility model:

1, the utility model is made up of inner tube, external protection and adiabator layer, and wherein, external protection is set in the outside of inner tube, between inner tube and external protection, adiabator layer is set.Outer tube outer wall is coated with one deck heat-reflecting layer, and when use, hot water flows in inner tube, because the heat insulation guarantor of adiabator layer mixes up use, makes the energy of the hot water in inner tube be difficult for leaking; Heat-reflecting layer not only can play not cracky, protection against the tide, the bubble-tight effect of maintenance of protection adiabator layer, can also guarantee that the energy in inner tube can out not form the security incident of scalding (or frostbite) by Quick diffusing.

2,, as optimum structure of the present utility model, the central axes of described external protection and inner tube, has guaranteed omnibearing even insulation.

3, described inner tube, external protection and adiabator layer are disposal integral molding structure, and this structure makes to the utlity model has good heat insulation and preservation effect, and firm in structure, reliable in quality, also easily carrying and installation.

4, described adiabator layer is polyurethane foam thermal insulation layer, and this thermal insulating material high insulating effect is with low cost, and easily processing.

5, the utility model utilizes the medium (as water, gas etc.) in the inner tube of adiabator layer position in course of conveying, to only have very little energy loss, thereby save the energy, be conducive to environmental protection, and make thermal insulation pipe form the product of a moulding, be easy to be extended and applied.

Accompanying drawing explanation

Fig. 1 is solar sandwich thermal insulation pipe schematic diagram of the present utility model (straight tube sectional view).

Fig. 2 is the schematic cross-sectional view of Fig. 1.

In Fig. 1, identify:

1, endoporus, 2, inner tube, 3, rigid foam thermal insulation layer, 4, outer tube, 5, heat-reflecting layer.

Embodiment

Embodiment 1

Solar sandwich thermal insulation pipe, its bimetallic tube fit forms, and bimetallic tube is polypropylene tube or PPR pipe, Sandwich filling between outer tube 4 and inner tube 2 has rigid foam thermal insulation layer 3, outer tube outer wall is coated with one deck heat-reflecting layer 5, and described heat-reflecting layer 5 is aluminium films, and hot water is walked the endoporus 1 of inner tube 2.The rigid foam using is polyurethane hard foam.

Application Example

The applicant has designed a kind of solar sandwich thermal insulation pipe, be arranged in solar energy hot water tank A, as the connecting tube between three water tanks (having one section of connecting tube to be exposed to casing outer), compare (having one section of connecting tube to be exposed to casing outer) with another solar energy hot water tank B, solar energy hot water tank B relatively uses individual layer PPR pipe, a place coexists, water inlet water temperature is identical, the model specification of vacuum tube is identical, through the solar vacuum-tube water heater of 3 hours solar light irradiations, it is 65 ℃ that the thermometer of solar energy hot water tank A shows, and the thermometer of solar energy hot water tank A shows it is 60 ℃, the heat that solar sandwich thermal insulation pipe of the present utility model loss is described is few, water tank temperature is higher.

Claims

1. a solar sandwich thermal insulation pipe, is characterized in that: it is bimetallic tube, and the Sandwich filling between outer tube and inner tube has rigid foam thermal insulation layer, and outer tube outer wall is coated with one deck heat-reflecting layer, and hot water is walked the endoporus of inner tube;

Described bimetallic tube is polypropylene tube or PPR pipe;

Described heat-reflecting layer is aluminium film.

2. according to the solar sandwich thermal insulation pipe described in claim l, it is characterized in that: described rigid foam is polyurethane hard foam.