CN101430035A - Sliding type aluminium plastic composite pipe fittings - Google Patents

Sliding type aluminium plastic composite pipe fittings Download PDF

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Publication number
CN101430035A
CN101430035A CNA2008101630205A CN200810163020A CN101430035A CN 101430035 A CN101430035 A CN 101430035A CN A2008101630205 A CNA2008101630205 A CN A2008101630205A CN 200810163020 A CN200810163020 A CN 200810163020A CN 101430035 A CN101430035 A CN 101430035A
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CN
China
Prior art keywords
millimeters
plastic
composite pipe
plastic composite
preferred
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CN101430035B (en
Inventor
林岳华
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ZHEJIANG SEJIN WATER INDUSTRY Co Ltd
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ZHEJIANG SEJIN WATER INDUSTRY Co Ltd
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Priority to CN2008101630205A priority Critical patent/CN101430035B/en
Publication of CN101430035A publication Critical patent/CN101430035A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/22Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
    • F16L33/225Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts a sleeve being movable axially

Abstract

The invention relates to a pipeline connecting technique, in particular to a sliding compact type aluminum-plastic laminated pipe fitting, comprising a main pipe fitting body (1) provided with a pipe internal stay (10) on at least one end, an element rest (11) which is arranged at the outside diameter of the pipe internal stay (10) and is pressed into a port (31) of an aluminum-plastic laminated pipe (3) that is enlarged in a cold way when in installation, a ring-shaped sliding compact blocking sleeve (2) that is matched with the pipe internal stay (10) and can be sheathed into the external diameter of the aluminum-plastic laminated pipe (3) in a way of clearance fit, and a chamfer angle (20) is arranged at the port of the inner wall at the left end (29) of the sliding compact blocking sleeve (2) that is fixed at a part (30) of the aluminum-plastic laminated pipe (3) enlarged in a cold way after being installed. Compared with the prior art, the sliding compact type aluminum-plastic laminated pipe fitting has the advantages of small diameter shrinkage, even connection stress as well as better applicability and market prospect, and is suitable for being surface mounted and buried in a hiding way, so as to be safer and more reliable.

Description

Sliding type aluminium plastic composite pipe fittings
Technical field
The invention relates to the pipeline connection area, is specifically related to the composite metal-plastic pipe interconnection technique.
Background technique
Aluminium-plastic composite pipe is the novel tube that rises the nearly more than ten years, has metal tube and plastic tube advantage, in China's development rapidly.The aluminum current plastic composite mainly adopts the screw thread snap ring to connect, and is CN 2499672Y " a kind of aluminium-plastic composite pipe pipe coupling " as authorizing publication number, adopts extruding C type ring between joint body and the nut, makes the plastic deformation of C type ring clamp the structure of firm tubing; Or adopting pincers to press connects, as notice of authorization number is CN 2510708Y " a kind of plastic-aluminum combined effective tongs press type plastic pipe ", form by pipe fitting body that is inserted in pipe end and the steel bushing etc. that is enclosed within tube outer diameter, use special tool pincers compressed steel cover to make its distortion, clamp firm pipe fitting, realize connecting.Above-mentioned two kinds of Placements all can produce the pipeline undergauge, influence flow and pressure; Placement physical damnification aluminium-plastic composite pipe influences the pipeline connection lifetime, and pipe leakage appears in joint discontinuity easily.
Sliding stressed joint mode is a kind of novel pipeline interconnection technique, be used on the pure plastic pipe, as PE-X (crosslinked polyethylene) pipe, PER pipe, PB pipe etc., notice of authorization number is the tight pipe fitting interconnection technique of a typical cold expansion cunning for " linkage structure of plastic tube " patent of CN 2620158Y.Before the connecting tube, earlier cutting ferrule is inserted in tubing, then the pipe fitting body is pressed into pipe fitting port, with instrument cutting ferrule and pipe fitting body are pushed away closely until offseting at last, finish connection through reaming.Sliding stressed joint mode adopts the Memorability of plastics to realize that with tolerance fit pipe part is connected, have undergauge little, do not damage tubing, stressed evenly, more safe and reliable characteristics.
The at present domestic technology that the sliding stressed joint of the cold expansion of employing on aluminium-plastic composite pipe is not arranged as yet, main cause is after aluminium-plastic composite pipe accompanies aluminium lamination, and tubing intensity improves, and the plastics Memorability reduces, and prior art fitting structure Safety performance is not high, occurs the hidden danger of leakage.
Summary of the invention
The invention is not suitable for the defective that aluminium-plastic composite pipe is slided stressed joint at existing pipe fitting, improves traditional fitting structure, designs the aluminium-plastic composite pipe pipe fitting that is fit to sliding stressed joint mode.
The technological scheme that the invention is adopted is:
A kind of sliding type aluminium plastic composite pipe fittings comprises that one has the main pipe body of an end pipe inner support at least, and pipe inner support external diameter is provided with convex tendon, is pressed into aluminium-plastic composite pipe during installation in the port of cold expansion; But also comprise the sliding tight cutting ferrule of annular that is inserted in plastic-aluminum combined external diameter of pipe with the supporting Spielpassung of pipe inner support, sliding tight cutting ferrule left end inwall port is provided with chamfering, is fixed on aluminium-plastic composite pipe through cold expansion part after sliding tight cutting ferrule is installed.
The technological scheme of the invention can also be:
The tight cutting ferrule inner diameter wall of described cunning is provided with the pawl groove.
The tight cutting ferrule left end of described cunning external diameter is provided with stiffening ring.
Pipe inner support external diameter bottom in main pipe body is equipped with a seal washer.
Tight cutting ferrule of described cunning and main pipe body adopt metal material, preferred brass.
Described main pipe body adopts engineering plastics, preferably adopts PPSU.
The tight cutting ferrule of described cunning adopts plastic material, preferred crosslinked polyethylene.
Described tubing is composite metal-plastic pipe, and internal layer and skin are plastic materials.
Between 16 millimeters of the metallo-plastic tubing nominal outside diameters such as described aluminium-plastic composite pipe, Copper-plastic Composite Pipe, 1.5 millimeters to 2.2 millimeters of inner plastic wall thickness, preferred 1.7 millimeters; Between 20 millimeters of the nominal outside diameters, 1.6 millimeters to 2.7 millimeters of inner plastic wall thickness, preferred 2.2 millimeters; Between 25 millimeters of the nominal outside diameters, 1.8 millimeters to 3.2 millimeters of inner plastic wall thickness, preferred 2.3 millimeters; Between 32 millimeters of the nominal outside diameters, 1.7 millimeters to 3.3 millimeters of inner plastic wall thickness, preferred 2.5 millimeters; Between 40 millimeters of the nominal outside diameters, 2.0 millimeters to 3.5 millimeters of inner plastic wall thickness, preferred 2.6 millimeters; Between 50 millimeters of the nominal outside diameters, 2.1 millimeters to 3.8 millimeters of inner plastic wall thickness, preferred 2.9 millimeters.
The invention will be slided the compact form pipe fitting and be applied on the aluminium-plastic composite pipe, this characteristic of inwall plastic materials memory plasticity by aluminium-plastic composite pipe realizes that pipe fitting connects, reduce on the conventional aluminum plastic composite pipe connecting structure pipe inner support and be provided with the O-ring seals parts, and adopt the sliding stressed joint of cold expansion, sealing force is even, press peripheral unbalance stress to compare with the tradition pincers, safety reliability increases greatly, and this fitting structure also is fit to as other metallo-plastic tubing such as Copper-plastic Composite Pipe, steel-plastic composite pipes.
The sliding type aluminium plastic composite pipe fittings of the invention is realized being connected by clamping tubing port tube wall between main pipe body pipe inner support part and the sliding tight cutting ferrule, utilize the memory plasticity of tubing plastics to reach sealing and fixing effect in clamping place, reduced the O shape coil component on the conventional aluminum plastic composite, compare with conventional aluminum plastic composite pipe fitting, have simple in structure, the pipeline undergauge is little, do not damage tubing, connect stressed evenly, more safe and reliable characteristics.This aluminium-plastic composite pipe pipe fitting is also applicable to other metallo-plastic tubing.Market potential is huge.
Description of drawings
Fig. 1 is the sliding type aluminium plastic composite pipe fittings part cross-sectional schematic of the invention;
Fig. 2 is the main pipe body schematic representation of the invention embodiment two.
Embodiment
Below in conjunction with drawings and embodiments the invention is further described.
As shown in Figure 1, the sliding compact form aluminium-plastic composite pipe pipe of the invention comprises a main pipe body 1, and main pipe body 1 is provided with the pipe inner support 10 of at least one end, and pipe inner support 10 external diameters are provided with convex tendon 11.Be pressed into aluminium-plastic composite pipe 3 when mounted in the port 31 of cold expansion.But pipe fitting also comprises the sliding tight cutting ferrule 2 of annular that is inserted in aluminium-plastic composite pipe 3 external diameters with the supporting Spielpassung of pipe inner support 10, and sliding tight cutting ferrule 2 left ends 29 inwall ports are provided with chamfering 20, are fixed on aluminium-plastic composite pipe 3 through cold expansion part 30 after sliding tight cutting ferrule 2 is installed.
Described cold expansion is meant that with Pipe expanding clamp expansion tubing internal layer port make that the pipe fitting bigger slightly than ips can be inserted in, this tubing mounting type can reduce the pipeline undergauge.
Described main pipe body 1 can be elbow, directly, each specification such as threeway.
Convex tendon 11 cross sections on the aforementioned tube inner support 10 become the pawl shape of semicircle or top fillet, pawl shape convex tendon 11 as shown in Figure 2.Convex tendon 11 quantity are provided with 2 to 8, and the sliding type aluminium plastic composite pipe fittings of 12 to 25 specification tubing is preferentially selecting 4 convex tendons 1; 25 to 32 specifications preferential selecting 5 convex tendons 11; 32 specifications are above preferentially chooses 6 convex tendons 1.
Tight cutting ferrule 2 inwalls of described cunning are provided with a pawl groove 21, and during sliding tight the installation, cold expansion part 30 plastic deformations of aluminium-plastic composite pipe 3 outer layer plastics 32 are extruded with the outer layer plastic 32 of plastic deformation in the pawl groove 21, promote the effect in sliding tight cutting ferrule 2 anti-back card jails greatly.For strengthening the intensity of sliding tight cutting ferrule 2 left ends 29 heads, slide the direction that tight cutting ferrule 2 is inserted in when installing for being more prone to distinguish in addition, be provided with stiffening ring 22 at sliding tight cutting ferrule 2 left end external diameters.
For strengthening aluminium-plastic composite pipe pipe fitting sealing effect, can be provided with gasket seal 4 in the bottom 12 of pipe inner support 10 external diameters, in addition, can the insulate cell reaction of generation between the main pipe body 1 of aluminium lamination and metal in the aluminium-plastic composite pipe 3 of gasket seal 4.
The chamfering 20 of the tight cutting ferrule 2 of above-mentioned cunning becomes angle 10 degree to 50 degree with the axle center, the best is made as 20 degree.After being in place, part is enclosed within on the annular portions 13 of pipe inner support 10 bottoms 12, and protection gasket seal 4 makes the pipe fitting connection safety strengthen.
The tight cutting ferrule 2 of above-mentioned cunning and main pipe body 1 adopts metal materials such as brass, stainless steel, aluminium, iron, with tubing such as aluminium-plastic composite pipe on when using, preferred brass material.Described main pipe body 1 also can adopt engineering plastics materials such as ABS, PPS, PPSU, nylon, the preferred resistant to elevated temperatures engineering plastics material of PPSU.Sliding tight cutting ferrule 2 also can adopt plastic materials such as crosslinked polyethylene, refractory polyethylene, polybutylene, preferably with the close or identical crosslinked polyethylene material of aluminium-plastic composite pipe 3 outer layer plastics 32 material capabilities.
This fitting structure is not only applicable to existing aluminium-plastic composite pipe 3, and also suitable and other internal and external layer all are the composite metal-plastic pipes 3 of plastic material, as steel-plastic composite pipe, Copper-plastic Composite Pipe.
With the tubing that sliding compact form pipe fitting cooperates, need carry out cold expansion in its connecting port and handle, the thick pipe fittings of the relative NBS of composite metal-plastic pipe inner plastic 33 wall thickness such as aluminium-plastic composite pipe are more suitable for sliding compact form and connect.The aluminium-plastic composite pipe specification of the invention can be: between 16 millimeters of the nominal outside diameters, 1.5 millimeters to 2.2 millimeters of inner plastic 33 wall thickness, and preferred 1.7 millimeters; Between 20 millimeters of the nominal outside diameters, 1.6 millimeters to 2.7 millimeters of inner plastic 33 wall thickness, preferred 2.2 millimeters; Between 25 millimeters of the nominal outside diameters, 1.8 millimeters to 3.2 millimeters of inner plastic 33 wall thickness, preferred 2.3 millimeters; Between 32 millimeters of the nominal outside diameters, 1.7 millimeters to 3.3 millimeters of inner plastic 33 wall thickness, preferred 2.5 millimeters; Between 40 millimeters of the nominal outside diameters, 2.0 millimeters to 3.5 millimeters of inner plastic 33 wall thickness, preferred 2.6 millimeters; Between 50 millimeters of the nominal outside diameters, 2.1 millimeters to 3.8 millimeters of inner plastic 33 wall thickness, preferred 2.9 millimeters.
Its specifications of composite metal-plastic pipe such as other Copper-plastic Composite Pipes that the invention is suitable for, steel-plastic composite pipe can be: between 16 millimeters of the nominal outside diameters, 1.5 millimeters to 2.2 millimeters of inner plastic 33 wall thickness, and preferred 1.7 millimeters; Between 20 millimeters of the nominal outside diameters, 1.6 millimeters to 2.7 millimeters of inner plastic 33 wall thickness, preferred 2.2 millimeters; Between 25 millimeters of the nominal outside diameters, 1.8 millimeters to 3.2 millimeters of inner plastic 33 wall thickness, preferred 2.3 millimeters; Between 32 millimeters of the nominal outside diameters, 1.7 millimeters to 3.3 millimeters of inner plastic 33 wall thickness, preferred 2.5 millimeters; Between 40 millimeters of the nominal outside diameters, 2.0 millimeters to 3.5 millimeters of inner plastic 33 wall thickness, preferred 2.6 millimeters; Between 50 millimeters of the nominal outside diameters, 2.1 millimeters to 3.8 millimeters of inner plastic 33 wall thickness, preferred 2.9 millimeters.
The sliding type aluminium plastic composite pipe fittings of the invention, parts are few, and are simple in structure, and cost of production is low, but safe and reliable, and adapts to other metal composite pipe fittings except that aluminium-plastic composite pipe, and adapts to bright dress and secretly bury, and has applicability and market prospects preferably.

Claims (14)

1, a kind of sliding type aluminium plastic composite pipe fittings comprises that one has the main pipe body (1) of an end pipe inner support (10) at least, it is characterized in that managing inner support (10) external diameter and is provided with convex tendon (11), is pressed into aluminium-plastic composite pipe (3) during installation in the port (31) of cold expansion; Also comprise with pipe inner support (10) but supporting Spielpassung is inserted in the sliding tight cutting ferrule (2) of the annular of aluminium-plastic composite pipe (3) external diameter, sliding tight cutting ferrule (2) left end (29) inwall port is provided with chamfering (20), is fixed on aluminium-plastic composite pipe (3) through cold expansion part (30) after sliding tight cutting ferrule (2) is installed.
2, sliding type aluminium plastic composite pipe fittings as claimed in claim 1 is characterized in that: the tight cutting ferrule of described cunning (2) inner diameter wall is provided with pawl groove (21).
3, sliding type aluminium plastic composite pipe fittings as claimed in claim 1 is characterized in that: outer end, the tight cutting ferrule of described cunning (2) left side is provided with stiffening ring (22).
4, sliding type aluminium plastic composite pipe fittings as claimed in claim 2 is characterized in that: outer end, the tight cutting ferrule of described cunning (2) left side is provided with stiffening ring (22).
5, as the arbitrary described sliding type aluminium plastic composite pipe fittings of claim 1 to 4, it is characterized in that: pipe inner support (10) the external diameter bottom in main pipe body (1) is equipped with a seal washer (4).
6, as the arbitrary described sliding type aluminium plastic composite pipe fittings of claim 1 to 4, it is characterized in that: tight cutting ferrule of described cunning (2) and main pipe body (1) adopt metal material, preferred brass.
7, sliding type aluminium plastic composite pipe fittings as claimed in claim 5, its characteristics are: tight cutting ferrule of described cunning (2) and main pipe body (1) adopt metal material, preferred brass.
8, sliding type aluminium plastic composite pipe fittings as claimed in claim 1 is characterized in that: described main pipe body (1) adopts engineering plastics, preferably adopts PPSU.
9, as the arbitrary described sliding type aluminium plastic composite pipe fittings of claim 1 to 4, it is characterized in that: the tight cutting ferrule of described cunning (1) adopts plastic material, preferred crosslinked polyethylene.
10, sliding type aluminium plastic composite pipe fittings as claimed in claim 5 is characterized in that: the tight cutting ferrule of described cunning (1) adopts plastic material, preferred crosslinked polyethylene.
11, sliding type aluminium plastic composite pipe fittings as claimed in claim 1 is characterized in that: described tubing (3) is composite metal-plastic pipe, and internal layer and skin are plastic materials.
12, sliding type aluminium plastic composite pipe fittings as claimed in claim 1 is characterized in that: between 16 millimeters of described aluminium-plastic composite pipe tubing (3) nominal outside diameters, 1.5 millimeters to 2.2 millimeters of inner plastic (33) wall thickness, and preferred 1.7 millimeters; Between 20 millimeters of the nominal outside diameters, 1.6 millimeters to 2.7 millimeters of inner plastic (33) wall thickness, preferred 2.2 millimeters; Between 25 millimeters of the nominal outside diameters, 1.8 millimeters to 3.2 millimeters of inner plastic (33) wall thickness, preferred 2.3 millimeters; Between 32 millimeters of the nominal outside diameters, 1.7 millimeters to 3.3 millimeters of inner plastic (33) wall thickness, preferred 2.5 millimeters; Between 40 millimeters of the nominal outside diameters, 2.0 millimeters to 3.5 millimeters of inner plastic (33) wall thickness, preferred 2.6 millimeters; Between 50 millimeters of the nominal outside diameters, 2.1 millimeters to 3.8 millimeters of inner plastic (33) wall thickness, preferred 2.9 millimeters.
13, sliding type aluminium plastic composite pipe fittings as claimed in claim 11 is characterized in that: between 16 millimeters of described metallo-plastic tubing (3) nominal outside diameters, 1.5 millimeters to 2.2 millimeters of inner plastic (33) wall thickness, and preferred 1.7 millimeters; Between 20 millimeters of the nominal outside diameters, 1.6 millimeters to 2.7 millimeters of inner plastic (33) wall thickness, preferred 2.2 millimeters; Between 25 millimeters of the nominal outside diameters, 1.8 millimeters to 3.2 millimeters of inner plastic (33) wall thickness, preferred 2.3 millimeters; Between 32 millimeters of the nominal outside diameters, 1.7 millimeters to 3.3 millimeters of inner plastic (33) wall thickness, preferred 2.5 millimeters; Between 40 millimeters of the nominal outside diameters, 2.0 millimeters to 3.5 millimeters of inner plastic (33) wall thickness, preferred 2.6 millimeters; Between 50 millimeters of the nominal outside diameters, 2.1 millimeters to 3.8 millimeters of inner plastic (33) wall thickness, preferred 2.9 millimeters.
14, as claim 11 or 13 arbitrary described sliding type aluminium plastic composite pipe fittings, it is characterized in that: described composite metal-plastic pipe (3) is a Copper-plastic Composite Pipe.
CN2008101630205A 2008-12-02 2008-12-02 Sliding type aluminium plastic composite pipe fittings Active CN101430035B (en)

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CN2008101630205A CN101430035B (en) 2008-12-02 2008-12-02 Sliding type aluminium plastic composite pipe fittings

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Application Number Priority Date Filing Date Title
CN2008101630205A CN101430035B (en) 2008-12-02 2008-12-02 Sliding type aluminium plastic composite pipe fittings

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CN101430035B CN101430035B (en) 2010-10-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103115205A (en) * 2013-01-28 2013-05-22 浙江世进水控股份有限公司 Sliding-compact-type pipe fitting for aluminum-plastic pipe
WO2015191991A1 (en) * 2014-06-12 2015-12-17 Buchanan Consulting LLC Tube fitting connection system and method
CN105333262A (en) * 2015-11-26 2016-02-17 华英伦科技(宁波)有限公司 Cold-expanding, cold-hooping and self-sealing connecting type plastic floor heating pipe fitting

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN213778258U (en) * 2020-10-20 2021-07-23 青岛海尔特种制冷电器有限公司 Pipe connecting mechanism and refrigerating system and refrigerator with same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999019654A1 (en) * 1997-10-14 1999-04-22 Nkt Flexibles I/S A flexible pipe with an associated end-fitting
CN2374732Y (en) * 1999-03-12 2000-04-19 宁波金帆管件有限公司 Aluminium-plastic compound tube hole plugging joint
CN2509423Y (en) * 2001-11-16 2002-09-04 倪岩友 Steel & plastic composite pipeline connecting element
CN1366157A (en) * 2001-12-27 2002-08-28 蒋伯观 Connection method of pipe joint for pipe with plastic liner
CN2620158Y (en) * 2003-04-28 2004-06-09 林岳华 Connecting structure for plastic pipes
CN100410001C (en) * 2006-07-21 2008-08-13 张天林 Production process of high strength self-sealing composite aluminium-plastic pipe union

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103115205A (en) * 2013-01-28 2013-05-22 浙江世进水控股份有限公司 Sliding-compact-type pipe fitting for aluminum-plastic pipe
WO2015191991A1 (en) * 2014-06-12 2015-12-17 Buchanan Consulting LLC Tube fitting connection system and method
CN105333262A (en) * 2015-11-26 2016-02-17 华英伦科技(宁波)有限公司 Cold-expanding, cold-hooping and self-sealing connecting type plastic floor heating pipe fitting

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Publication number Publication date
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