CN200961768Y

CN200961768Y - Metal composite plastic pipe and plastic pipe fitting connected pipe net

Info

Publication number: CN200961768Y
Application number: CN 200520036607
Authority: CN
Inventors: 甘国工
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-22
Filing date: 2005-12-22
Publication date: 2007-10-17
Anticipated expiration: 2015-12-22

Abstract

The utility model provides a metal component plastic pipe and a pipe net connected by a plastic connector, characterized in that the end of the plastic pipe is equipped with a cone faucet, a metal bone middle layer is equipped inside the metal component plastic pipe, the inner and outer walls of the metal bone middle layer is respectively equipped with at least one plastic inner layer and at least one plastic outer layer, the end of the metal component plastic pipe is equipped with a cone which cooperates with the cone faucet of the plastic pipe, the cone is equipped with an inner plastic pipe wall end surface, a metal bone slant cone surface which cooperates with the inner cone surface of the plastic pipe end faucet, an inner plastic slant cone surface and an outer plastic slant cone surface, and each slant cone surface of the cone on the metal component plastic pipe end is connected with the inner cone faucet of the plastic pipe faucet to a pipe net. The connection of the utility model is reliable and convenient and the performance of the pipe net is more reliable.

Description

The pipe network that the metal composite plastic tube is connected with plastic pipe

Technical field:

The utility model is relevant with being connected of plastic pipe with plastic tube, and especially the pipe network that is connected with plastic pipe with the metal composite plastic tube is relevant.

Technical background:

Being connected with the mechanical snap method between the plastic tube of known metal composite and the pipe connecting member of plastics material is connected, the electrical heating wire electric heating tubing that useful pipe connecting component joint socket inner chamber distributes is connected the two sides fusion with the cylindricality junction surface or the tapering junction surface of pipe fitting, what have also that the author applies for also undocumentedly utilizes spin friction to give birth to method that heat fusing connects connects the conical surface between tubing and the pipe fitting together with the step end face heat fusing of tube intracavity method, disclosed connecting means such as number of patent application 03225501 with immediate other people application of the application, this patent disclosure be a kind of aluminium-plastic composite pipe hot melt linkage structure, comprise aluminium-plastic composite pipe (4) and connection pipe fitting (1), this aluminium-plastic composite pipe (4) is by outer layer plastic layer (4-3), heat-fusing glue layer (4-4), middle aluminium lamination (4-2), heat-fusing glue layer (4-5) and inner plastic layer (4-1) are formed.It is characterized in that described plastic-aluminum pipe (4) connects the end to be exposed one section inner plastic layer (4-1) and form the 1st of pipe and connect the 2nd of cylinder (2-2) and pipe and be connected cylinder (3-2); The arbitrary end of described connection pipe fitting (1) is provided with the 1st attachment hole face (2-1) and the 2nd attachment hole face (3-1) and is connected cylinder (2-2) respectively with the 1st of aluminium-plastic composite pipe (4) and is connected cylinder (3-2) with the 2nd and cooperates hot melt to be connected to form the 1st connection area (2) and the 2nd connection area (3).

In the above-mentioned known technology, use the mechanical snap method, can not give full play to the characteristics that pipe connecting member of plastics material can be tightly connected with metal composite plastic tube hot melt, can not prevent effectively that the pipe network fluid from strengthening the corrosion of skeleton to the metal in the composite pipe.

Electric heating wire heating and melting tubing and pipe fitting junction surface with the distribution of pipe connecting member of plastics material joint socket inner chamber, because of adding silk, electricity can only distribute at outer wall or tube intracavity, can not utilize plastics melting sealed between the ring-shaped step with tubing end and tube intracavity design, strengthen the corrosion of the sealing of skeleton and fluid so can not solve the metal of the metal composite pipe of the pipe network that connects to it, come sealing metal to strengthen skeleton though taked to utilize plastic hoop in advance the tube end face heating and melting to be connected skeleton internal and external layer plastics, but coefficient is different because metal and two kinds of material hot lines of plastics expand, plastic pipe electric heating melts when connecting, the cooling that reality is different because of line expands or welding is later is shunk different, plastic hoop and metal frame internal and external layer plastics reality have order of magnitude difference because of linear expansion, the reason of expanding with heat and contract with cold causes skeleton to withstand plastic hoop, produces the crack between the two and does not reach seal request.

The spin friction heat fusing that utilizes of the applicant's application welds, this technology provides a kind of pipe end flange of steel-frame reinforced composite plastic pipe, pipe end flange is made up of with a plastics flange that is connected with end face spin friction heating and melting with the outer cone surface of multiple tube or pipe fitting end plastic composition pipeline or pipe fitting that Steel Skeleton strengthens, this flange has an inwall that is tapering and a step surface that is connected with the end face fusion of multiple tube or pipe fitting that matches with the tapering on multiple tube or pipe fitting outer cone surface, the outer cone surface of this inwall and step surface and multiple tube or pipe fitting contacts with end face and when producing spin friction, their contact friction face Yin Shengre and fusion, the smelt that produces couples together the outer cone surface and the fusion of pipe end face of flange inner wall and step end face and multiple tube and pipe fitting, make plastics flange become the pipe end flange that nonvolatil fusion is connected with multiple tube or pipe fitting, the pipe end flange hot melt of this pipeline or pipe fitting docks just can connect and is pipe network, this technology has realized better seal to the enhancing Steel Skeleton of pipeline or pipe fitting, solved the connection sealing difficult problem in metal enhancing framework composite tube road, this spin friction utilizes the fusion of the conical surface and end face to be connected, though preferably resolve the sealing of metal frame, but it is more at the complicated pipe fitting that need connect of design of pipe networks, when type is complicated, when being connected of more vertical with horizontal solid particularly arranged, only depend on and utilize spin friction melting tube end flange on pipeline or the pipe fitting, and with pipe end flange again hot melt to form pipe network be to be inconvenient to rotate to fetching.When networking, have vertically especially or when laterally connecting, or when being welded to form a net or arm, can't rotate the frictional heat welding.This method is than major diameter, on ground or bury when the ground straight tube connects abundant advantage is arranged, in connecting building and in the plane, sub-district or the less difficulty that has the rotation inconvenience when φ 200 is following of main body pipe network or diameter.

With the immediate known technology of the utility model technological scheme of number of patent application 03225501 as described above, being to strengthen composite plastic pipe at metal---the cylndrical surface of the inner plastic tube wall of aluminium-plastic composite pipe promptly the 1st connects cylinder and promptly the 2nd is connected the 1st of the inner wall surface of utilizing the plastic pipe that joint socket is arranged on the cylinder and pipe and is connected the connection of cylinder hot melt with the 2nd along the outer wall cylndrical surface of plastic-aluminum pipe.And in fact this technological scheme is to being connected surface heating and implementing inserting when being connected of pipe and pipe fitting, and melt heating is managed and the end face of pipe fitting is pushed out the so-called the 1st or the 2nd cylndrical surface each other when axial socket joint each other.It also is not good promptly enabling the fusion connection.Particularly than major diameter such as connection greater than the pipe of φ 63, be that sufficient melt will be arranged because of this professional person knows the quality of welding.The 2nd, on the welding face of weld certain pressure or bigger cooling contractile force and thermal expansion force to arranged each other.And the connection cylndrical surface of this programme does not only produce pressure, pushed away due melt on the contrary, it is to be noted especially welding each other if all be thicker pure plastic pipe of tube wall and pipe fitting cooling contractile force and the thermal expansion force required because of thick article can produce, but just plastic tube cylndrical surface systolic pressure is produced here because there is plastic-aluminum pipe reverse side in the middle of the two layers of plastic tube wall to stop pipe fitting inwardly to shrink to apply.Otherwise stop this pipe internal and external layer plastic tube wall cylndrical surface to produce to the hot melt swelling pressure of tube intracavity cylndrical surface, and make welding undesirable, it is unreliable that pipe network connects, the bearing capacity deficiency.More plastic tube wall is generally all thin because metal strengthens the skeleton internal and external layer, former plastics wall thickness is pushed because of melt after utilizing the axial socket joint of joint socket, cause the plastics wall thickness of participating in thermal expansion not enough more, so so-called the 1st connection cylndrical surface is connected the cylndrical surface with the 2nd connection is very insecure.Need improve the cylndrical surface welding process.

The model utility content:

The purpose of this utility model is in order to overcome above deficiency, provides a kind of and can connect reliably, the pipe network that is connected with plastic pipe of metal composite plastic tube easily.

The purpose of this utility model is achieved like this:

The pipe network that the utility model metal composite plastic tube is connected with plastic pipe, there is coniform joint socket the plastic pipe termination, the metal frame mesosphere is arranged in the metal composite plastic tube, in the metal frame mesosphere, at least one deck inner plastic is arranged respectively on the outer wall, at least one deck plastic outer layer, there is the cone that cooperates with the coniform joint socket of plastic pipe metal composite plastic tube termination, inner plastic tube wall end face is arranged on the cone, the metal frame tilted conical surface that cooperates with plastic pipe termination joint socket inner conical surface, the inner plastic tilted conical surface, the outer layer plastic tilted conical surface, each tilted conical surface on the cone of metal composite plastic tube termination and the inner conical surface socket joint of plastic pipe joint socket are connected to pipe network, at least three tilted conical surface inner conical surfaces corresponding with plastic pipe joint socket inwall utilize heating resistance collar and glow plug respectively they to be added thermal recovery thermofusible spigot connecting means fusion and are connected to form pipe network, and the living hot melting connection of the rotation that need not rub is connected with the electric heating wire heating and melting.Because of tube wall and pipe joint inner cavity surface all are conical surfaces, heat fusing body when heating the back socket joint each other on the conical surface of correspondence is because of extruding rather than push out junction surface, enough melts are not only arranged, enough pressure is also arranged, welding is good each other, in addition the ring-shaped step end face of pipe end face and pipe joint inner chamber also fusion to the pressure of forcing into submission, even the ring-shaped step end face have a mind to made be the welding area that trapezoidal or curved surface increases end face, making each other, face of weld increases, and increase cooled heat seal strength and cross-sectional area and lifting surface area, the axial humidification that metal frame is arranged in the tube wall in addition, can make three faces and even four faces enough axial pressures be arranged and make face of weld and molten mass that enough pressure be arranged, make to connect reliably, metal frame fully seals, and the inner tube of composite pipe keeps sufficient wall thickness.External pipe also can with the abundant welding of pipe joint inner conical surface and reliable, weak link and defective do not appear in the fusion joint, can give full play to the metal framework reinforced plastic pressure of full pipe again, be connected and the comparison of electric heating wire heating and melting interconnection technique with the hot melting of existing friction rotation life, weak link and defective have obviously been solved and have remedied, and give birth to the heat fusing connecting means because of not adopting spin friction, remedied the inconvenience of this method in construction, material is an organosilane crosslinked polyethylene, before it is not hydrolyzed the polycondensation cross-linking reaction, utilize it hot melt connection its heat fusing socket joint to be connected into pipe network, under hygrothermal environment that satisfies its hydrolytie polycondensation cross-linking reaction and condition, be hydrolyzed the polycondensation cross-linking reaction again and become the silane crosslinked polyethylene pipes net, utilize organosilane crosslinked polyethylene before hydrolytie polycondensation is crosslinked, to still have this characteristic of good hot molten characteristic, at least 3 continuous conical surfaces of tube and tube spare and end face heat fusing are connected to form the hot water pipe network, the logical again hot water polycondensation cross-linking reaction that is hydrolyzed, make organosilane crosslinked polyethylene crosslinked for heat-resisting, the pipe network that life-span is long, make be difficult for material that hot melt connects also hot melt be connected to pipe network.

The pipe network that above-mentioned metal composite plastic tube is connected with plastic pipe, metal composite plastic tube inner plastic tube wall end face in the pipe network is connected with the ring-shaped step end face of plastic pipe joint socket inwall, the ring-shaped step end face of pipe end face and pipe joint inner chamber also fusion to the pressure of forcing into submission, make face of weld increase each other, and increase cooled heat seal strength.

The pipe network that above-mentioned metal composite plastic tube is connected with plastic pipe, metal composite plastic tube and plastic pipe

The pipe network that above-mentioned metal composite plastic tube is connected with plastic pipe, at least three tilted conical surface socket joints of inner conical surface and metal composite plastic tube of plastic pipe one end joint socket inwall correspondence are connected, and be distributed with electric heating wire at another the joint socket inner chamber of connecting end of plastic pipe, it is to rely on electric heating wire heating and melting socket joint to go into partly to form pipe network that other plastic tube or pipe fitting are attached thereto, the joint socket inner chamber distribution electric heating wire of the connecting end of other of pipe fitting, and can also coat corresponding different material because of the tubing that connects different materials on the electric heating wire, the tubing that can realize multiple material connects in pipe network, enlarge the application of pipe network, solve the network technology that connects into of different plastic materialss.

The pipe network that above-mentioned metal composite plastic tube is connected with plastic pipe, the inner conical surface of plastic pipe one end joint socket inwall correspondence is connected with three tilted conical surface socket joints of plastic tube of metal composite at least, and another connecting end of plastic pipe is straight bobbin, this straight bobbin can insert in the other pipe joint joint socket, it adopts hot melt to be connected with the joint socket inner chamber or utilizes and is distributed with electric heating wire electric heating fusion on its internal chamber wall and couples together and become pipe network, also can dock the formation pipe network with other pipe or pipe fitting hot melt, the other connecting end of tubular union is straight bobbin, main its socket joint is for convenience gone into other pipe joint joint socket inner chamber by thermal fusion welding or by the molten connection of electric heating, perhaps dock with other pipe or pipe fitting hot melt, this technology is that silane crosslinked polyethylene pipes has special significance for the aforementioned metal composite pipe, when its also not hydrolytie polycondensation become crosslinked shape and the good thermal fusion welding performance of this fashion tool, the tubular union made from thermoplastic material connects by above-mentioned technology with it in advance, again to its hydrolytie polycondensation cross-linking reaction.After this, though pipe again can't welding, from then on this pipe has just had a connecting head that can be at any time melts with its hot melt, electric heating, and very high using value is arranged in pipe-networks engineering.

The pipe network that above-mentioned metal composite plastic tube is connected with plastic pipe, the skeleton of the metal composite plastic tube of pipe network is the metal tube of butt joint (but not welding), because pipe joint has two continuous conical surfaces that the metal tube of composite pipe is also coated with two continuous conical surface weldings that outer layer plastic tube adopts thermofusible spigot to be connected, reality has increased the wall thickness of this place's pipe, make metal strengthen skeleton and can only coat and need not dock welding, can make things convenient for the production of pipe like this, do not need the welding production of metal tube and only need tinsel or tubing, can save investment of production equipment and cost the coating of inner layer plastic tube.Such as, can connect stable state pipe (aluminium-plastic composite pipe) by heat fusing.And higher bearing capacity is arranged than known technology, perhaps can therefore reduce the wall thickness of pipe and save cost.

The pipe network that above-mentioned metal composite plastic tube is connected with plastic pipe, the skeleton of the metal composite plastic tube of pipe network is butt joint or overlap joint (and through a welding) aluminum pipe, because of 3 continuous conical surfaces of pipe are that secondary operations to the straight tube end forms, the connection of socket joint heat fusing is only heated in not spin friction in addition, can connect metal frame is the composite pipe of butt welding, also can connect lap-welded composite pipe.

The pipe network that above-mentioned metal composite plastic tube is connected with plastic pipe, the skeleton of the metal composite plastic tube of pipe network is a steel pipe, owing to have one to be the inner layer plastic tube outer conical surface in 3 continuous conical surfaces, can connect with the corresponding inner chamber conical surface fusion of pipe joint, as long as the inner plastic thickness of pipe wall of the corresponding tensile strength of design, because of the wall thickness of pipe joint wall thickness much larger than composite pipe, enough bearing capacities and tensile strength after being attached thereto, the inner layer plastic tube of composite pipe are just arranged, there is steel pipe also fusion to be connected with pipe joint inner chamber hot melt with the outer layer plastic wall in addition, can enlarge skeleton or be porose cylindrical skeleton steel pipe through welding, also can make metal and strengthen body, enlarge the application area of skeleton with aluminum pipe.

The pipe network that above-mentioned metal composite plastic tube is connected with plastic pipe, the skeleton of the metal composite plastic tube of pipe network is porose Steel Skeleton, porose metal frame can be that porose band has hole on framework through being wound into tubular, also can be that the broadwise steel wire twines steel radial through being welded into skeleton, also can be that right-hand screw steel wire winding left hand screw steel wire forms porose skeleton or left and right sides spiral braided steel wire is formed with hole on framework, have hole on framework that the internal and external layer plastics are connected as a single entity through the hole, pipe network has better switching performance.

The pipe network that above-mentioned metal composite plastic tube is connected with plastic pipe, between the metal frame of pipe and the internal and external layer plastic layer adhesive layer is arranged, between metal frame and internal and external layer plastic layer, adhesive layer is arranged, can make internal and external layer plastics and skeleton compound more firm, the corresponding pipeline link with better switching performance is arranged after it is connected, particularly skeleton is imperforate aluminum pipe or steel pipe, and the performance after the connection is more reliable than the pipe network of binder free.

The pipe network that above-mentioned metal composite plastic tube is connected with plastic pipe, the internal and external layer plastic layer of the metal frame of pipe is different plastic materials, the metal frame internal and external layer adopts different plastic materialss can realize wideer application and more economical cost of production, can be connected to pipe network more easily, as the metal composite plastic tube of hot water pipe net be internal layer be heatproof organosilane crosslinked polyethylene, outerly be the metallic skeleton reinforced composite plastic pipe of non-crosslinked heatproof polyethylene (PE-RT).

The pipe network that above-mentioned metal composite plastic tube is connected with plastic pipe has the metal construction that strengthens metal frame and/or be connected usefulness with other tubing in the tube wall continuum of plastic pipe.The metal frame that humidification is arranged in the tube wall continuum of pipe joint, can improve the switching performance and the bearing capacity of pipe network, also need to be bumped into the metal construction that is connected usefulness with other pipeline in the continuum, metal construction that is threaded such as need and instrument, instrument detect the connection mouth of usefulness.

The pipe network that the utility model metal composite plastic tube is connected with plastic pipe, adopt three tilted conical surface inner conical surfaces corresponding to utilize heating resistance collar and glow plug respectively they to be added thermal recovery thermofusible spigot connecting means fusion and be connected to form pipe network with plastic pipe joint socket inwall, when being connected, pipe fitting not only connected skin, also link to each other with internal layer, connecting means is reliable and convenient, the pipe network more reliable performance has increased the unfailing performance of pipework.

Description of drawings:

Fig. 1 is the utility model pipe network connection diagram that the three-way pipeline link is arranged.

Fig. 2 has the utility model pipe network of three-way pipeline link to connect another schematic representation.

Fig. 3 has the utility model pipe network of three-way pipeline link to connect a schematic representation again.

Fig. 4 has the utility model pipe network of three-way pipeline link to connect a schematic representation again.

Fig. 5 is coated with the adhesive layer schematic representation for electric heating wire.

Fig. 6 is the utility model pipe network connection diagram of band threeway and bipass pipe connecting.

Embodiment:

Embodiment 1:

Fig. 1 has provided the utility model embodiment 1 figure.Referring to Fig. 1, the compound compound steel-plastic composite pipe 3 of steel-plastic composite pipe 1, aluminium-plastic composite pipe 2, atresia steel band of porose steel band that is connected by three-way pipeline link 4 forms pipe network.On the plastic outer layer 5 in the compound steel-plastic composite pipe 1 of porose steel band a tilted conical surface 9 that is connected with pipe joint 4 fusions is arranged, plastic outer layer 5 adopts non-crosslinked heatproof polyethylene (PE-RT) to make, metal frame 6 one ends that porose steel band in the steel plastic composite pipe 1 is welded through butt joint also are tilted conical surface 10 and link together with pipe joint 4, the tilted conical surface 11 that is connected with pipe joint 4 fusions is arranged in the inner plastic 7, inner plastic 7 also is to adopt non-crosslinked heatproof polyethylene (PE-RT) to make, in the hole of metal frame 6 and the metal frame two sides Bond 8 is arranged, plastic outer layer 5 and inner plastic 7 and metal frame 6 bondings are combined with each other.

The internal and external layer of the aluminium foil 13 in the aluminium-plastic composite pipe 2 has the internal layer 14 and outer 12 of non-crosslinked heatproof polythene material (PE-RT) respectively, between they and aluminium foil, Bond 8 is arranged, material is the polyethylene of maleic anhydride graft, aluminium foil only is that butt joint is coated on not welding on the inner layer plastic tube, claim this pipe to be the stable state pipe in the industry, in this pipe, the corresponding inner chamber conical surface fusion of the tilted conical surface of outer layer plastic tube wall and the tilted conical surface of aluminium foil and pipe joint 4 links together, and the inner chamber annular table terrace 15 of the end face of inner plastic tube wall and pipe joint 4 also is that fusion links together herein.

The internal layer and the skin of the skeleton 17 in the compound steel-plastic composite pipe 3 of atresia steel band are compounded with non-crosslinked heatproof polythene material (PE-RT) 16 and 18 respectively, adhesive layer 8 is as hereinbefore arranged between itself and skeleton 17, and three the continuous tilted conical surfaces of composite pipe 3 and the corresponding conical surface fusion of inner chamber of pipe joint link together.

Above-mentioned steel-plastic composite pipe 1 and aluminium-plastic composite pipe 2 and steel-plastic composite pipe 3 are with specialist tools the pipe end cutting to be cone earlier, have a mind to outer layer plastic tube and aluminum pipe or porose steel pipe or steel pipe are removed some by the tapering cutting, expose the tube wall certain-length of inner plastic, the pipe such as φ 20～φ 50 of general little caliber need expose 6 to 15mm, the pipe such as φ 63～φ 110 of big caliber, need exposed 10 to 30mm, the bigger needs of caliber satisfy intensity Len req and tubing and tube wall thickness after coming under the Fluid Computation static pressure situation pipe joint and the tubing heat fusing is connected by the bearing capacity of pipe network, come to determine the required exposed pipe length of inner layer plastic tube on this basis again, the last cutting tapering of determining pipe again, general tapering is selected between 20 degree at 0.5 degree, what caliber was big gets the small value, desirable big value that the inner plastic tube wall is thicker even bigger 20 degree that surpass, the tube intracavity conical surface cooperates with it, can be that cutting cooperates unanimity, also can be to utilize the heating tool that tapering is arranged of thermofusible spigot to cooperate with it inner chamber is heated the tapering that forms cooperation, the tube intracavity tapering that caliber is bigger can be made when the pipe fitting injection moulding is produced in advance, exposed length is when satisfying strength deficiency, can together be fused into as-welded shown in sequence number among Fig. 1 15 together with inner plastic tube wall end face working of plastics inner chamber ring-shaped step end face, when inner layer tube wall is thin, also can together be fused into as-welded shown in sequence number among Fig. 1 15 together with tube wall end face and inner chamber step end face.The tube intracavity conical surface also coats the tilted conical surface of metal frame simultaneously when welding inner plastic tube wall tilted conical surface or fusion coats and is connected, prevents that the corrosive fluid in the pipe network from contacting and producing corrosion from company's seam crossing seepage with metal frame.The tube intracavity conical surface also the plastic layer on the skeleton skin is coated and heat fusing connects, have Bond compound between skin and the skeleton is one in addition, the continuous conical surface of tube intracavity is with after the fusion of outer layer plastic layer is connected, not only can utilize tube wall thickness to help inner layer plastic tube, metal frame and outer layer plastic to bear higher pipe network discharge pressure, can also bear higher axial pulling capacity because of hot melt connects the outer layer plastic tube wall.The heat fusing of three continuous faces connects, end face and inner chamber ring-shaped step end face is connected in addition, make pipe network can bear aforementioned known techniques, particularly near the higher pipe network system pressure of the technology of the linkage structure of the number of patent application 03225501 of technology, particularly remedied the insecure weakest link of connection of two cylndrical surface of number of patent application 03225501: because of composite pipe and pipe fitting fitting surface are not conical surface thermofusible spigots, actual the 1st cylndrical surface just extruded face of weld and reduced molten mass and can not produce enough hot melt swelling pressure because of the heat fusing body is pushed when the socket joint, when particularly caliber is big, this phenomenon is more serious, cause welding unreliable, more serious is that the 2nd cylndrical surface approaches (because of it mainly bears the aluminium strip anti-corrosion function) because of outer layer plastic layer wall thickness, the molten mass of participation heat fusing still less, and when socket joint, there is aluminium strip when inserting, the molten mass of inner chamber cylndrical surface to be pushed out the welding area, cause heat fusing to connect major defect, and can not increase the function that pipe fitting is born the axial pulling capacity of pipe network simultaneously.

Present embodiment and existing stable state Pipe joining method take out promptly that the aluminium strip layer only is connected with inner plastic tube wall heat fusing with outer layer plastic layer, pipe fitting, tube intracavity is not inserted in aluminum tube layer and outer plastic layer relatively, overcome the defective that pipe network system pressure only depends on inner plastic thickness of pipe wall pressure-bearing.

Had tube wall thickness to participate in the technological progress that pipe network system pressure is born in the present embodiment connecting means, suitably the attenuate inner layer plastic tube is saved the lot of materials cost.

Embodiment 2:

Fig. 2 has provided the utility model embodiment 2 figure.Referring to Fig. 2, present embodiment 2 is basic same with embodiment 1.Do not exist together is that composite plastic pipe internal layer 19 and outer 20 materials are PP-R or HDPE all, pipe joint 21 is threeways, steel plate frame 22 is arranged in the middle of the pipe joint body, it is with screw thread copper mold insert 23 that a wherein small-bore end connects, the metal frame 24 usefulness broadwise steel wires 25 of the composite pipe of pipe joint right-hand member twine steel radial 26 and form through welding, the metal frame of the composite pipe of the other end twines with steel wire 27 left and right spirals intersections and forms skeleton, and the pipe end face all is connected as a single entity with tube intracavity ring-shaped step end face 15 heat fusings.

Embodiment 3:

Fig. 3 has provided the utility model embodiment 3 figure.Referring to Fig. 3, present embodiment 3 is basic same with embodiment 1.Do not exist together be composite plastic pipe internal layer 31 and outer 32 and pipe fitting 33 all be silane crosslinked polyethylene, three kinds of metal composite plastic tubes (comprise aluminium strip butt welding and have the crosslinked with silicane plastic-aluminum pipe 28 of adhesive layer; Skeleton has the steel wire welded framework crosslinked with silicane composite pipe 29 of adhesive layer, porose steel band butt welding skeleton does not have the composite pipe 30 of adhesive layer) the internal layer 31 plastic tube end faces of tube wall all are the fusion connection state with inner chamber ring-shaped step end face 15, the composite pipe 30 of porose steel band butt welding skeleton, and broadwise steel wire 25 twines the composite pipe 29 of steel radial 26 through being welded into porose steel-wire carcass, three continuous tilted conical surfaces 9 of composite pipe, 10,11 and the internal layer 31 plastic layer end faces of composite pipe and the inner chamber conical surface and ring-shaped step end face 15 thermofusible spigots of pipe joint link together, realized coating sealing to porose steel band butt welding skeleton and steel-wire carcass, not only the line that expands with heat and contract with cold of bearing capacity height and the pipe network rate that expands is low for this pipe network, after finishing, connection carries out cross-linking reaction again, 95 ℃ of this pipe network abilities, 50 year working life, and pipe network dimensionally stable, because of the difficult problem of the drawing crack pipe joint joint of expanding with heat and contract with cold is solved, be the excellent engineering material of hot water pipe net.Aluminium-plastic composite pipe is owing to adopted the thermofusible spigot of three continuous tilted conical surfaces and end face to connect, reliably more many than traditional mechanical snap formula, find out by structure, owing to utilize the thermofusible spigot of the conical surface and end face to connect, can realize the connection of multiple metal frame plastic composite pipe and pipe network, enlarge kind and the scope of engineering greatly with pipe.

Embodiment 4:

Fig. 4, Fig. 5 have provided the utility model embodiment 4 figure.Referring to Fig. 4, Fig. 5, present embodiment 4 is basic same with embodiment 1.Do not exist together is that material is that the pipe joint 34 of non-crosslinked heatproof polyethylene (PE-RT) is two logical, one end and porose steel band butt welding skeleton also have three continuous tilted conical surfaces 9 in non-crosslinked heatproof polyethylene compound pipe 1 end of adhesive layer, 10,11 and the thermofusible spigot of end face 15 connect, the other end melts to be connected by pipe fitting 34 straight socket joint inner chambers 35 electric heating wire 37 that Bond and PE-RT blend 36 coat being had as shown in Figure 5 of distributing and porose steel band butt welding skeleton and the non-crosslinked heatproof polyethylene compound pipe 1 end straight-tube electric heating that has an adhesive layer and forms pipe network.

Embodiment 5:

Fig. 6 has provided the utility model embodiment 5 figure.Referring to Fig. 6, in the present embodiment, the hole pattern steel band and the compound composite pipe 38 of organosilane crosslinked polyethylene that do not have adhesive layer, material is that the three-way pipeline link 39 of non-crosslinked heatproof polyethylene (PE-RT) and bipass pipe connecting 40 (have good welding ability and 80 ℃, 50 years hot-water line working life), the straight socket joint inner chamber in bipass pipe connecting 40 two ends is distributed with and is had the electric heating wire 37 (can make things convenient for the molten outer composite pipe of PE-RT material that is of electric heating) that Bond and PE-RT blend 36 coat, hole pattern steel band and organosilane crosslinked polyethylene (internal layer 31) that adhesive layer 8 is arranged, the compound composite pipe 41 of non-crosslinked heatproof polyethylene (outer 5), are PE-RT materials with outer 42 in advance, internal layer 43 is flanges 45 that composite pipe 44 thermofusible spigots of organosilane crosslinked polyethylene connect compound good PE-RT material, docks with three-way pipeline link hot melt again.

Composite pipe 38 was described with being connected as patent application of pipe joint 39, be 38 to be three continuous tilted conical surfaces 9 when good heat fusing switching performance is arranged before hydrolytie polycondensation not is crosslinked with the tube wall cutting of

composite pipe

38,10,11, adopt of the tilted conical surface heating of special heating mould cover to tube wall, it is heated and locates viscous state and the elastomeric state state, fill in the joint socket of pipe joint 39 to inner chamber with special heating mould at the same time, this is plugged with certain taper tapering basic and pipe and matches, when the socket joint instrument after fusion is connected also cooling and shaping with end face, takes away special socket joint instrument until two conical surfaces with the heating of composite pipe 38 insertion tube pipe connectings 39 ring-shaped step end faces 15 just now.When caliber during, can be connected with fusion by manual socket joint less than φ 63.This pipe can carry out cross-linking reaction and makes pipe become the composite pipe of crosslinked with silicane after hot melt connected, kept the good welding performance of pipe joint spare 39 this moment because of the PE-RT material is not crosslinked, can be in engineering at any time with other pipeline and pipe fitting hot melt or electric heating is molten or hot melt docks.

Pipe joint 39 upper ends are passed through electric heating wire 37 and are gone up the PE-RT material of clad 36, and can pass through bipass pipe connecting 40 in project installation is molten connection of silane crosslinked polyethylene pipes 41 electric heating of PE-RT material with outer 5 arbitrarily.Pipe joint 39 also can dock by flange 45 hot melts any and on the composite pipe 44 in project installation, these pipes all are heatproof, the corrosion resistant pipeline that hot application life decades is arranged basically, only there is good pipeline in past, but do not have feasible connecting means and form pipe network, make hot water pipe net can't adopt plastic pipe so far or adopt also and can only connect with the mechanical snap method, this method makes multiple composite pipe, the composite pipe that comprises internal and external layer different materials, the inside and outside different materials of skeleton connects into pipe network, adopts plastic pipe to make outstanding contributions to hot water with pipe network system.

The various embodiments described above are that foregoing of the present utility model is further described, but this should be interpreted as that the scope of the above-mentioned theme of the utility model only limits to the foregoing description.All technology that realizes based on foregoing all belong to scope of the present utility model.

Claims

1, the pipe network that the metal composite plastic tube is connected with plastic pipe, it is characterized in that there is coniform joint socket the plastic pipe termination, the metal frame mesosphere is arranged in the metal composite plastic tube, in the metal frame mesosphere, at least one deck inner plastic is arranged respectively on the outer wall, at least one deck plastic outer layer, there is the cone that cooperates with the coniform joint socket of plastic pipe metal composite plastic tube termination, inner plastic tube wall end face is arranged on the cone, the metal frame tilted conical surface that cooperates with plastic pipe termination joint socket inner conical surface, the inner plastic tilted conical surface, the outer layer plastic tilted conical surface, each tilted conical surface on the cone of metal composite plastic tube termination and the inner conical surface socket joint of plastic pipe joint socket are connected to pipe network.

2, the pipe network that is connected with plastic pipe of metal composite plastic tube as claimed in claim 1 is characterized in that the metal composite plastic tube inner plastic tube wall end face in the pipe network is connected with the ring-shaped step end face of plastic pipe joint socket inwall.

3, the pipe network that is connected with plastic pipe of metal composite plastic tube as claimed in claim 1 or 2, at least three the tilted conical surface socket joints of inner conical surface and metal composite plastic tube that it is characterized in that plastic pipe one end joint socket inwall correspondence are connected, and being distributed with electric heating wire at another connection joint socket inner chamber of plastic pipe, it is to rely on electric heating wire to form pipe network that other plastic tube or pipe fitting are attached thereto.

4, the pipe network that is connected with plastic pipe of metal composite plastic tube as claimed in claim 1 or 2, at least three the tilted conical surface socket joints of inner conical surface and metal composite plastic tube that it is characterized in that plastic pipe one end joint socket inwall correspondence are connected, and another connecting end of plastic pipe is straight bobbin, and this straight bobbin can insert in other the pipe joint joint socket.

5, the pipe network that is connected with plastic pipe of metal composite plastic tube as claimed in claim 1 or 2, the skeleton that it is characterized in that the metal composite plastic tube of pipe network are the metal tubes of butt joint.

6, the pipe network that is connected with plastic pipe of metal composite plastic tube as claimed in claim 1 or 2, the skeleton that it is characterized in that the metal composite plastic tube of pipe network are the aluminum pipes of butt joint or overlap joint.

7, the pipe network that is connected with plastic pipe of metal composite plastic tube as claimed in claim 1 or 2 is characterized in that the skeleton of the metal composite plastic tube of pipe network is a steel pipe.

8, the pipe network that is connected with plastic pipe of metal composite plastic tube as claimed in claim 1 or 2, the skeleton that it is characterized in that the metal composite plastic tube of pipe network is porose Steel Skeleton.

9, the pipe network that is connected with plastic pipe of metal composite plastic tube as claimed in claim 1 or 2 is characterized in that between the metal frame of pipe and the inside and outside layer plastic layer adhesive layer being arranged.

10, the pipe network that is connected with plastic pipe of metal composite plastic tube as claimed in claim 1 or 2 is characterized in that in the tube wall continuum of plastic pipe the metal construction that strengthens metal frame and/or be connected usefulness with other tubing being arranged.