CN201827531U

CN201827531U - Wear-resistant and thermal insulation enhanced thermoplastic plastic pipe

Info

Publication number: CN201827531U
Application number: CN2010205890100U
Authority: CN
Inventors: 李志雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-29
Filing date: 2010-10-29
Publication date: 2011-05-11
Anticipated expiration: 2020-10-29

Abstract

The utility model discloses a wear-resistant and thermal insulation enhanced thermoplastic plastic pipe comprising a plastic inner layer, an enhancement layer and a plastic outer layer which are sequentially arranged from inside to outside; furthermore, a thermal insulation layer covers the outer side of the plastic outer layer; and a wear-resistant layer covers the outer side of the heat-insulation layer. In the thermoplastic plastic pipe, the thermal insulation layer covers the outer side of the plastic outer layer to realize the thermal insulation effect; and the wear-resistant layer forms a stress concentrating point or a crack propagation point on tubular products while protecting the thermal insulation layer and preventing the outer wall of the pipe from being damaged. The plastic pipe is applicable to fields of hot springs, waste heat utilization, region cold and warm house water routes, freeze-proofing water routes needing thermal insulation and wear resistance, and simultaneously also can be applied to the pipeline laying of complex places such as mountain areas, forest lands, and the like.

Description

A kind of wear resistant heat preserving reinforced thermoplastics pipe

Technical field

The utility model relates to the plastic tube technical field, relates in particular to a kind of wear resistant heat preserving reinforced thermoplastics pipe that is applicable to fields such as hot spring, the utilization of waste heat used heat, cooling-heating room water route, region, antifreeze water route and complex-terrain.

Background technique

Reinforced thermoplastics pipe (Rein-forced Thermoplastic Pipe, be called for short RTP) developed in the early 1990s in last century, mainly form by three-decker, inside and outside layer is the above material of PE80, optional as required white of skin (face of land laying antiultraviolet) or black (laying) with burying, the mesosphere is the reinforcing band that reinforcing material is composited, and reinforcing material can be polyester fibre, aramid fibre, glass fibre or wire rope or metal tape etc.

Compare with the common plastics composite pipe, characteristics such as RTP has withstand voltage height, good toughness, be convenient to installation and laying, overall cost is low, having realized middle heavy caliber high pressure tubing baling transportation and construction (200～2000 meters of every volume length), is present unique pressure tube technology that can reach this length.Therefore, significantly reduced the jointing between the tube and tube, speed of application has improved tens of times, and transportation and operating expenses have reduced about 70%, are successfully applied to oil transportation and natural gas transport field in a large number.In recent years, also obtained vigorously promoting the use, and obtained significant effect and economic benefit in the high-pressure delivery field of industries such as chemical industry, municipal administration.

Yet the general serviceability temperature of RTP is-42 ℃～65 ℃, and plastics of itself and enhancement layer heat insulation effect are limited.Practical application shows that for fields such as hot spring, the utilization of waste heat used heat, cooling-heating room water route, region, antifreeze water routes, at high temperature exospheric temperature is very high, far away from more than 60 ℃, and hot spring transportation art particularly, the front end serviceability temperature can reach 90 ℃.Therefore, the common three-decker RTP temperature resistant capability of prior art is poor, be difficult to reach the requirement of relevant thermal insulation pipe installation provision, both wasting energy, (what show in the fluid of carrying higher temperature is particularly evident, the heat loss that is caused in the course of conveying reaches 10%～30%), personal safety is also caused certain threat.For this reason, also have and adopt through special manufacturing with the heatproof plastics as outer thermal insulation layer improving temperature resistant capability, but because the outer field special construction of insulation,, be very easy to fray, thereby thermal insulation layer was lost efficacy in the mountain area, during complicated local tubing such as forest land.In addition, the Chinese patent publication number is that CN201513636U, name are called the utility model patent in " heatproof thermoplastic composite plastic tube road ", a kind of industry and life heatproof thermoplastic composite plastic tube road of being used for disclosed, pipe layer, enhancement layer and each layer of external tube layer hold tightly together in it, and wherein reinforcing band is made through the polyolefine material coating by the reinforced fiber rope of alinement shape.It is a three-decker still, and temperature resistant capability is limited, and exists equally at complex-terrains such as the whole soil of accident of terrain, mountain area, fields, problems such as big, the easy wearing and tearing of construction resistance.

The model utility content

The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of wear resistant heat preserving reinforced thermoplastics pipe with good insulation and wear-resisting property is provided,, prevents to scald and pipe damage to reduce energy consumption, prolong pipeline working life, enlarge the use field of pipeline.

The purpose of this utility model is achieved by the following technical programs:

A kind of wear resistant heat preserving reinforced thermoplastics pipe that the utility model provides comprises inner plastic, enhancement layer, plastic outer layer from inside to outside successively; In addition, the outside of described plastic outer layer is coated with thermal insulation layer, and the outside of described thermal insulation layer is coated with wearing layer.The utility model coats thermal insulation layer by the outside at plastic outer layer and realizes insulation effect; and wearing layer is when protecting thermal insulation layer, avoiding managing the outer wall damage; can form stress concentration point or crack propagation point to tubing itself; can be applicable to complicated local pipe laying such as mountain area, forest land, thereby be applicable to different laying environment better.

The utility model can be taked following further measure: described thermal insulation layer is many micro cellular foam, as polyethylene physics or chemical blowing body, polyurethane foaming body etc., its many closed pore structures have the following thermal conductivity of 0.04W/m.k, the transmission of trap heat well.In addition, the thermal insulation foaming layer has certain thickness, thereby makes tubing have the characteristic of insulation and anti-more high pressure.

The direct compatible coating of thermal insulation layer described in the utility model and plastic outer layer.The direct compatible coating of described wearing layer and thermal insulation layer.Plastic outer layer, thermal insulation layer, wearing layer can use with the material material and directly be coated on the outside to possess better compatibility, need not the connection of adhesive layer, can improve the overall performance of tubing greatly, help once-through production simultaneously.

The utlity model has following beneficial effect:

(1) has good insulation and wear-resisting property, improved the insulating power of RTP pipe, reduced energy consumption, can prevent to scald; When avoiding managing the outer wall damage, can form stress concentration point or crack propagation point to tubing itself, prolonged the working life of tubing, especially being suitable for hot spring, the utilization of waste heat used heat, cooling-heating room water route, region, antifreeze water route etc. needs insulation and wear-resisting field, also can be applicable to complicated local pipe laying such as mountain area, forest land simultaneously.

(2) thermal insulating material uses foaming bodies such as polyethylene, low price, and the thermal insulation layer thermal conductivity can satisfy heat insulation demand well below 0.04W/M.K.And can be identical with the plastic outer layer material and have good compatibility, improved the overall performance of tubing greatly.

(3) be convenient to adopt one-shot forming technique, production technology is simple, and controllability is good, the automatization level height.

Description of drawings

Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail:

Fig. 1 is the utility model embodiment's a structural representation.

Among the figure: inner plastic 1, enhancement layer 2, plastic outer layer 3, thermal insulation layer 4, wearing layer 5

Embodiment

Figure 1 shows that the embodiment of the utility model wear resistant heat preserving reinforced thermoplastics pipe, have inner plastic 1, enhancement layer 2, plastic outer layer 3, thermal insulation layer 4, wearing layer 5 from inside to outside successively.

Inner plastic 1 can be polyethylene, polypropylene, polybutylene, polyurethane, PVC, acrylonitrile-butadiene-styrene copolymer etc. or their modifier.Enhancement layer 2 comprises enhancing modes such as the enhancing of synthetic fiber braid, wire strands enhancing, metal tape enhancing, reinforcing band (or compound strip) enhancing.Plastic outer layer 3 can use the material of inner plastic 1 and try one's best identical with thermal insulation layer 4 materials.Thermal insulation layer 4 is for having certain thickness microporous polyethylene foaming body or polyurethane foaming body etc.Wearing layer 5 uses high density polyethylene (HDPE), crosslinked polyethylene, VHD polyethylene, or the plastics of other high wear resistance or its modifier, as nylon, fluoroplastic and their modifier etc.

And plastic outer layer 3, thermal insulation layer 4, wearing layer 5 uses with the material material and can make it possess better compatibility and directly be coated on the outside, need not the connection of adhesive layer, can improve the overall performance of tubing greatly, helps once-through production simultaneously.

Claims

1. a wear resistant heat preserving reinforced thermoplastics pipe comprises inner plastic (1), enhancement layer (2), plastic outer layer (3) from inside to outside successively; It is characterized in that: the outside of described plastic outer layer (3) is coated with thermal insulation layer (4), and the outside of described thermal insulation layer (4) is coated with wearing layer (5).

2. wear resistant heat preserving reinforced thermoplastics pipe according to claim 1 is characterized in that: described thermal insulation layer (5) is many micro cellular foam.

3. wear resistant heat preserving reinforced thermoplastics pipe according to claim 2 is characterized in that: described thermal insulation layer (4) and the direct compatible coating of plastic outer layer (3).

4. wear resistant heat preserving reinforced thermoplastics pipe according to claim 1 is characterized in that: described wearing layer (5) and the direct compatible coating of thermal insulation layer (4).