CN2356209Y

CN2356209Y - Composite insulation direct buried pipe

Info

Publication number: CN2356209Y
Application number: CN 99204216
Authority: CN
Inventors: 吴英华; 贾淑英; 韩建华; 刘玉芳
Original assignee: 吴英华
Priority date: 1999-03-03
Filing date: 1999-03-03
Publication date: 1999-12-29
Anticipated expiration: 2009-03-03

Abstract

The utility model discloses a composite insulation direct buried pipe, comprising a metal pipe, an air heat-insulation layer, an insulation pipe tile layer, an inorganic composite insulation layer, a waterproofing and corrosion-proof protection layer, etc. The utility model is characterized in that a high temperature resistant fibre felt pad is arranged between hard insulation pipe tiles. The utility model has the advantages of rapid assembly of insulation pipe tiles, time and labor saving, high work efficiency, low heat loss, favorable whole insulation performance, long service life, etc.

Description

The complex heat-preservation direct buried pipe

The utility model relates to a kind of complex heat-preservation direct buried pipe, belongs to a kind of high temperature media complex heat-preservation direct buried pipe.

At present, the kind of guaranteeing warm complex heat-preservation direct buried pipe for high temperature media heating power is more, its pluses and minuses are respectively arranged, in being assembled with the complex heat-preservation direct buried pipe of hard heat-insulated pipe watt, during the assembling heat insulation pipe tile, generally be to use the organic or inorganic material adhesive between the heat insulation pipe tile, bonding with organic material, non-refractory, in hot running, bonding position is impaired, strengthened heat loss, shortened working life, if bonding between the heat insulation pipe tile with inorganic material, though could be high temperature resistant, but owing to contain more water, thermal conductivity is increased, need to assemble the laggard kiln oven dry that finishes at insulation tile and carry out next process again, it is wasted time and energy, inefficiency.

The purpose of this utility model be to overcome the deficiency in the background technique and provide that a kind of heat loss is little, the complex heat-preservation direct buried pipe of good heat insulating, high working efficiency, long service life.

The purpose of this utility model is achieved in that it comprises metal tube, air heat-insulation layer, heat insulation pipe tile layer, inorganic compounding heat insulation layer, water-tight corrosion-proof protective layer, is provided with the high-temperature resistant fiber felt pan between hard heat-insulated pipe watt.

The utility model compared with prior art has following advantage:

1, owing to when making this product, in the heat insulation pipe tile assembling process, be provided with the high-temperature resistant fiber felt pan between the heat insulation pipe tile, the heat insulation pipe tile assembling is quick, need not dry after assembling finishes and can enter next process, and is therefore time saving and energy saving, high working efficiency;

2, because the fiber felt pan is not only high temperature resistant but also have certain elasticity, and thermal conductivity is little, thereby makes between the heat insulation pipe tile and connect closely, heat loss is little, its elasticity make hard heat-insulated watt stressed after cracky not, the integral heat insulation performance is good, long service life.

Description of drawings:

Fig. 1 is the utility model structural representation

Fig. 2 is the utility model cross-sectional configuration schematic representation

Among the figure: metal tube (1), air heat-insulation layer (2), hard heat-insulated pipe watt layer (3), inorganic compounding heat insulation layer (4), water-tight corrosion-proof protective layer (5), hard heat-insulated pipe watt (6), high-temperature resistant fiber felt pan (7).

Below in conjunction with drawings and Examples in detail the utility model is described in detail: it be on the basis of the existing complex heat-preservation direct buried pipe that includes heat insulation pipe tile, carry out improved; as shown in Figure 1 and Figure 2; be followed successively by metal tube (1), air heat-insulation layer (2), hard heat-insulated pipe watt layer (3), inorganic compounding heat insulation layer (4), water-tight corrosion-proof protective layer (5) from inside to outside; between hard heat-insulated pipe watt (6), be equipped with high-temperature resistant fiber felt pan (7), make it to link formation hard heat-insulated pipe watt layer (3).Every complex heat-preservation direct buried pipe that contains hard heat-insulated pipe watt layer (3), no matter the annexation of level what and each interlayer how, hard heat-insulated pipe all can be provided with high-temperature resistant fiber felt pan (7) between watt (6), and hard heat-insulated pipe watt (6) and hard heat-insulated pipe watt are linked by fiber felt pan (7).If two-layer or two-layer above hard heat-insulated pipe watt layer (3) is set, interlayer also will be established high-temperature resistant fiber felt pan (7).High-temperature resistant fiber felt pan (7) can adopt aluminum silicate fiber felt pan, foam asbestus felt pan, composition silicate felt pan, super glass wool felt pan etc.Hard heat-insulated pipe watt employing microporous calcium silicate insulation tile, hydrophobic pearlite insulation tile, multi cellular glass insulation tile etc.

Claims

A kind of complex heat-preservation direct buried pipe comprises metal tube, air heat-insulation layer, heat insulation pipe tile layer, inorganic compounding heat insulation layer, water-tight corrosion-proof protective layer, it is characterized in that being provided with the high-temperature resistant fiber felt pan between the hard heat-insulated pipe watt.