CN205371846U

CN205371846U - Ground heating coil

Info

Publication number: CN205371846U
Application number: CN201620135942.5U
Authority: CN
Inventors: 李伦; 朱明闯
Original assignee: Chengdu Phaeton Plastic Cement Co Ltd
Current assignee: Chengdu Phaeton Plastic Cement Co Ltd
Priority date: 2016-02-23
Filing date: 2016-02-23
Publication date: 2016-07-06
Anticipated expiration: 2026-02-23

Abstract

The utility model discloses a ground heating coil, including inlayer and skin, its characterized in that, the inlayer adopt PE -RT to make, the outer PE that adopts makes, still is provided with the steel wire stratum reticulare between inlayer and the skin, the steel wire stratum reticulare in succession the winding on the inlayer, inlayer, steel wire stratum reticulare and outer through crowded shaping altogether. Ground heating coil effectively improved ground heating coil's compressive capacity when dwindling the pipeline wall thickness greatly, the cost of manufacture of pipeline is low, intensity is good, occupation space is little in the installation, reduces installation cost, can be good be applied to the hot water circulation, situation that ectonexine adhesion strength height can not appear peeling off, long service life.

Description

A kind of floor heating pipe

Technical field

This utility model relates to tubing technical field, particularly relates to a kind of floor heating pipe.

Background technology

Floor heating pipe refers to that being used as low-temperature water heating in Low Temperature Hot Water Floor Radiant Heating System circulates a kind of tubing of carrier.

Current floor heating pipe is made frequently with PE-RT material, PE-RT and heat-proof polythene, it it is a kind of noncrosslinking polyethylene that may be used for hot-water line, it it is a kind of medium density polyethylene adopting special MOLECULE DESIGN and synthesis technique to produce, PE-RT adopts the method for ethylene and octene copolymer, the molecular structure of uniqueness is obtained by the quantity and distribution controlling side chain, improve the thermostability of PE, owing to the existence of octene short-chain branch makes the macromole of PE uncrystallizable in a flat crystal, but it is applied in several crystal, define the connection between crystal, it remains the good pliability of PE, high thermal conductivity and inertia, simultaneously so as to resistance to pressure is better, PE-RT quality is comparatively soft, special instrument is not needed during construction, therefore processing cost is relatively low.The heat conductivility of PE-RT is better, and its heat conductivity is the twice of PP-R, PP-B tubing, and the low-temperature impact-resistant performance of PE-RT is relatively good, and during winter construction, tubing is not easily susceptible to impact and break, and adds the motility that construction arranges, and is especially suitable for floor heating and uses.

But the PE-RT floor heating pipe that tradition uses at present is in order to reach required design pressure requirement, the PE-RT material used needs thicker wall thickness, and the PE-RT material that therefore floor heating pipe consumes is more, and cost of manufacture is higher, and wall thickness increase also increases installation and takies volume, increases installation difficulty.

Utility model content

The technical assignment of technical problem to be solved in the utility model and proposition is that prior art is improved, it is provided that a kind of floor heating pipe, solves the floor heating pipe wall thickness in current technology thicker, and cost of manufacture is high, installs and takes up room greatly, spends big problem in comfort.

For solving above technical problem, the technical solution of the utility model is:

A kind of floor heating pipe, including internal layer and outer layer, it is characterised in that, described internal layer adopts PE-RT to make, and outer layer adopts PE to make, and is additionally provided with steel screen layer between internal layer and outer layer, steel screen layer continuous winding is on internal layer, and internal layer, steel screen layer and outer layer pass through coextrusion mold.Floor heating pipe described in the utility model utilizes steel screen layer to strengthen the structural strength of pipeline greatly, improve the pressure that pipeline can bear, thus the thickness of internal layer and outer layer can be significantly thinning, under the supporting role strengthening skeleton that steel screen layer is constituted, the internal layer of floor heating pipe described in the utility model plus outer layer total wall thickness can less than the two of the floor heating pipe wall thickness that traditional PE-RT makes/once required design pressure requirement can be reached, more save installing space, and floor heating pipe described in the utility model only internal layer adopts PE-RT material to make, and the Costco Wholesale of PE material is significantly less than PE-RT material, therefore the cost of manufacture of floor heating pipe described in the utility model it is substantially reduced.

Further, it is additionally provided with hot melt adhesive layer between described internal layer and steel screen layer, steel screen layer and outer layer, hot melt adhesive layer is utilized to improve the bonding strength of internal layer and outer layer, it is prevented that use procedure to occur the situation that ectonexine is peeled off, improves ruggedness and safety in utilization.

Further, described steel screen layer adopts high intensity coating wire continuous winding in the way of left-handed and dextrorotation intersect, the structural strength of floor heating pipe is improved along the uniform winding mode that floor heating pipe is axial, thus improving the resistance to hydrostatic ability of floor heating pipe, can effectively reduce the wall thickness of floor heating pipe, reduce manufacturing cost, improve service life.

Further, the steel wire winding angle of described steel screen layer is 54 °～60 °, make tubing axially and hoop uniform stressed, the steel wire strengthened is high intensity coating wire, before being wound around, steel screen layer cladding has the clad of hot melt adhesion performance and resistance effect, after being wound around, extrudes cladding through heating, middle close binder extrusion cladding, outer layer PE-RT on floor heating pipe internal layer, ensure that between high intensity coating wire and internal layer and outer layer, hot melt sticks to one, thus obtaining the composite pipe of excellence.

Further, gauge of wire 0.5mm～1mm that described steel screen layer adopts, the caliber of base area heating coil selects the steel wire of suitable thickness to be wound guaranteeing that floor heating pipe reaches required resistance to hydrostatic requirement.

Further, the steel wire bar number that described steel screen layer is wound around is at least 14, left-handed identical with the steel wire quantity of dextrorotation, selects the steel wire bar number of varying number that floor heating pipe can be made to reach different nominal pressure, meets different demands, be applied in different working environments.

Compared with prior art, this utility model advantage is in that:

Floor heating pipe described in the utility model is effectively increased the anti-pressure ability of floor heating pipe while being substantially reduced pipeline wall thickness, the cost of manufacture of pipeline is low, intensity is good, installation takes up room little, reduce installation cost, the hot water that is applied to that can be good circulates, and ectonexine adhesion strength height does not have the situation of stripping, long service life；

This utility model simple in construction, it is easy to manufacture, high financial profit.

Accompanying drawing explanation

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

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.

The disclosed a kind of floor heating pipe of this utility model embodiment, reduces the pipeline wall thickness of floor heating pipe, reduces pipeline cost of manufacture, and structural strength is high, takies volume little, it is simple to install.

As shown in Figure 1, a kind of floor heating pipe, including internal layer 1 and outer layer 2, it is characterized in that, described internal layer 1 adopts PE-RT to make, outer layer 2 adopts PE to make, steel screen layer 3 it is additionally provided with between internal layer 1 and outer layer, steel screen layer 3 adopts high intensity coating wire continuous winding in the way of left-handed and dextrorotation intersect, gauge of wire 0.5mm～1mm, winding angle is 54 °～60 °, make tubing axially and hoop uniform stressed, internal layer 1 and steel screen layer 3, hot melt adhesive layer 4 it is additionally provided with between steel screen layer 3 and outer layer 2, steel screen layer 3 continuous winding is on internal layer 1, internal layer 1, steel screen layer 3 and outer layer pass through coextrusion mold.

The steel wire bar number that steel screen layer 3 is wound around is at least 14, left-handed identical with the steel wire quantity of dextrorotation, selects the steel wire bar number of varying number that floor heating pipe can be made to reach different nominal pressure.

Table one

Table one is the contrast list of common PE-RT pipe and the nominal wall thickness of this utility model floor heating pipe, and wherein S3.2 and the S2.5 of common PE-RT pipe is pipe series, and S3.2, S2.5 represent the tubing of hot water.As shown in table one, this utility model floor heating pipe nominal wall thickness under different nominal pressures require all is far smaller than the wall thickness of common PE-RT pipe, floor heating pipe of the present utility model is compound pipeline complex pipeline, internal layer is that PE-RT material is made, outer layer is that PE material is made, the cost of PE material is far below PE-RT material, for traditional PE-RT pipe, floor heating pipe described in the utility model is greatly saved the use of PE-RT material, it is thinned pipeline wall thickness, the cost of manufacture of floor heating pipe is greatly reduced when meeting nominal pressure, and installation volume is less, save space, reduce installation cost.

The steel wire bar number of table two this utility model floor heating pipe and the list of corresponding nominal outside diameter and nominal pressure, the floor heating pipe for different nominal outside diameters adopts the steel wire bar number of varying number to be wound, thus reaching different nominal pressure requirements.Steel wire used by steel screen layer adopts high intensity coating wire, before being wound around, steel screen layer cladding has the clad of hot melt adhesion performance and resistance effect, formed after floor heating pipe internal layer is wound around and strengthen skeleton, cladding is extruded through heating, middle close binder extrusion cladding, outer layer PE-RT, ensure that between high intensity coating wire and internal layer and outer layer, hot melt sticks to one, thus obtaining the composite pipe of excellence.

Table two

Below it is only preferred implementation of the present utility model, it is noted that above-mentioned preferred implementation is not construed as restriction of the present utility model, and protection domain of the present utility model should be as the criterion with claim limited range.For those skilled in the art, without departing from spirit and scope of the present utility model, it is also possible to making some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims

1. a floor heating pipe, including internal layer (1) and outer layer (2), it is characterized in that, described internal layer (1) adopts PE-RT to make, outer layer (2) adopts PE to make, being additionally provided with steel screen layer (3) between internal layer (1) and outer layer, steel screen layer (3) continuous winding is on internal layer (1), and internal layer (1), steel screen layer (3) and outer layer pass through coextrusion mold.

2. floor heating pipe according to claim 1, it is characterised in that be additionally provided with hot melt adhesive layer (4) between described internal layer (1) and steel screen layer (3), steel screen layer (3) and outer layer (2).

3. floor heating pipe according to claim 1, it is characterised in that described steel screen layer (3) adopts high intensity coating wire continuous winding in the way of left-handed and dextrorotation intersect.

4. floor heating pipe according to claim 3, it is characterised in that the steel wire winding angle of described steel screen layer (3) is 54 °～60 °.

5. floor heating pipe according to claim 4, it is characterised in that gauge of wire 0.5mm～1mm that described steel screen layer (3) adopts.

6. floor heating pipe according to claim 4, it is characterised in that the steel wire bar number that described steel screen layer (3) is wound around is at least 14 is left-handed identical with the steel wire quantity of dextrorotation.