CN2220574Y

CN2220574Y - Double-pipe prefabricated insulating pipe

Info

Publication number: CN2220574Y
Application number: CN 95215867
Authority: CN
Inventors: 姜振家
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-12
Filing date: 1995-07-12
Publication date: 1996-02-21
Anticipated expiration: 2005-07-12

Abstract

The utility model relates to a double-pipe prefabricated heat insulation pipe. The utility model is characterized in that heat transporting steel pipes are two parallel steel pipes; a bracket is arranged between the two steel pipes; a steel baffle plate is welded on a direction which is parallel with the direction of the length of the two steel pipes for fixing the bracket in a system. The utility model can be a parallel bent pipe and a parallel three-way pipe. The utility model has the advantages of low heat insulation material dosage requested by the utility model compare with two single pipes, small volume, better heat insulation structural performance, convenient bracket manufacture, and no influence for the normal running of pipelines. Besides, the utility model reduces earthworks in site operation correspondingly and can bear pressure between steel pipes. The utility model is suitable for heat supply and insulation pipes which have a medium temperature below 150DEG. C.

Description

Two-tube heat preservation pipe prefabricated

The utility model belongs to the heat preservation pipe prefabricated of piping adiabatic apparatus, particularly a kind of parallel double tube.

At present, constantly enlarge in the Heat Supply Engineering and use heat preservation pipe prefabricatedly, its advantage is: can directly buried installation, save the conventional heat retaining operation that in trench, carries out, and improve work efficiency, reduce the trench excavated volume; The thermal insulation layer of whole pipe-line system is an integral seamless, and the pipeline thermal loss is few; Have anticorrosion, water resistance, can prolong pipeline working life.But, be single heat supply water pipe and add the heat preservation pipe prefabricated of insulation and protective coating formation, for parallel lay-up water return pipeline is arranged, need the insulation measure equally, therefore, it is big to lay the occupation of land volume, and the thermal insulating material consumption is many, and the laid processes construction is loaded down with trivial details.

The purpose of this utility model is, designs and produces the heat preservation pipe prefabricated of a kind of parallel double tube, and heat supply water pipe and return pipe are arranged in same thermal insulation layer and the protective coating, takes up an area of volume, convenient construction to save thermal insulating material, to reduce.

Of the present utility model two-tube heat preservation pipe prefabricated, by defeated hot steel pipe, thermal insulation layer, protective coating is formed, and it is characterized in that, defeated hot steel pipe is parallel two steel pipes, between two steel pipes support is set, on the length direction of parallel two steel pipes, is welded with the Steel Lagging that system's fixed support is used.

Of the present utility model two-tube heat preservation pipe prefabricated, can be parallel bend pipe, parallel three-way pipe.

Using method of the present utility model is: keep spacing with support between the steel pipe with two isometric parallel placements, the Steel Lagging of using at the stage casing of parallel steel tube welding system fixed support; At the coated polyurethane rigid foam of the outer wall of parallel steel tube thermal insulation layer, coated again high density polyethylene (HDPE) or glass fibre reinforced plastics protective coating are fixed; During use, feed high-temperature-hot-water or steam in the steel pipe, by backwater, reach heat insulation effect in another root steel pipe.

The utility model has the advantages that, two-tube heat preservation pipe prefabricated needed thermal insulating material is lower than two heat preservation pipe prefabricated consumptions of single tube; Reduce the corresponding site operation earthwork that reduced at underground shared volume; Because two-tube in advance in same thermal insulation layer, its insulating structure performance is good, the thermal loss in pipeline further reduces; Adopt support between two-tube, easy to make, can bear pressure between the steel pipe, and not influence pipeline and normally move, be applicable to that medium temperature is at the heat supply thermal insulation pipe below 150 ℃.

Below in conjunction with drawings and Examples, the utility model will be further described:

Fig. 1 is two-tube heat preservation pipe prefabricated organigram;

Fig. 2 is the A-A sectional drawing of Fig. 1;

Fig. 3 is the B-B sectional drawing of Fig. 1.

As seen from the figure, two-tube heat preservation pipe prefabricated, by defeated hot steel pipe 1, thermal insulation layer 2, protective coating 3 is formed, and it is characterized in that, defeated hot steel pipe is parallel two steel pipes, between two steel pipes support 4 is set, and is welded with the Steel Lagging 5 that system's fixed support is used on the length direction of parallel two steel pipes.

Claims

1, a kind of two-tube heat preservation pipe prefabricated, by defeated hot steel pipe, thermal insulation layer, protective coating is formed, and it is characterized in that, defeated hot steel pipe is parallel two steel pipes, between two steel pipes support is set, on the length direction of parallel two steel pipes, is welded with the Steel Lagging that system's fixed support is used.

2, as claimed in claim 1 two-tube heat preservation pipe prefabricated, it is characterized in that, two-tube heat preservation pipe prefabricated be parallel bend pipe.

3, as claimed in claim 1 two-tube heat preservation pipe prefabricated, it is characterized in that, two-tube heat preservation pipe prefabricated be parallel three-way pipe.