CN102537571A - Pipe joint used for connecting polyethylene plastic-steel winding pipes - Google Patents
Pipe joint used for connecting polyethylene plastic-steel winding pipes Download PDFInfo
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- CN102537571A CN102537571A CN2012100023610A CN201210002361A CN102537571A CN 102537571 A CN102537571 A CN 102537571A CN 2012100023610 A CN2012100023610 A CN 2012100023610A CN 201210002361 A CN201210002361 A CN 201210002361A CN 102537571 A CN102537571 A CN 102537571A
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Abstract
A pipe joint used for connecting polyethylene plastic-steel winding pipes includes a spiral pipe body, and is characterized by further including a spigot sleeve and a socket sleeve respectively fixed on outer sides at two ends of the spiral tube body, wherein the spigot sleeve comprises a first spiral tube and a first direct tube; the inner side of the first spiral tube is provided with a spiral slot that is matched with a convex spiral having the same spiral direction with the convex spiral; a first flange boss is arranged between the first spiral tube and the first direct tube, and the first spiral tube is screwed and fixed at one end of the spiral pipe body; the socket sleeve comprises a second spiral tube and a second direct tube; and the outer diameter of the first direct tube is smaller than or equal to the inner diameter of the second direct tube. The spigot sleeve and the socket sleeve provided by the invention can be injection-molded at one step directly by adopting an injection molding machine, so that the pipe joint is extremely convenient, simple and quick to machine and produce, and has the advantages that the use of a special tool is avoided during construction, the cost is low and the compression resistance is high.
Description
Technical field
Patent of the present invention relates to a kind of pipe joint of polyethylene plastic-steel spirally-wound pipe, especially a kind of small-bore plastic-steel spirally-wound pipe (pipe joint that Dn≤800mm) connects that is used for.
Background technique
Polyethylene plastic-steel spirally-wound pipe (industry standard CJ/T 270-2007) is because it has the external spiral tendon particular structure, and Placement mainly adopts two kinds of connecting means, that is, interior electric heating melts connection method and stainless steel lathe dog connecting means.Wherein, interior Electric thermal smelting belt connecting means is applicable to that mainly the tubing (Dn >=800mm, Dn are used to represent the bore of tubing) of larger caliber is wherein used in the majority with Dn >=1200mm.For the following tubing of Dn≤1200mm, especially Dn≤800mm tubing all adopts the mode of stainless steel lathe dog to connect basically.
(the employing stainless steel lathe dog mode of Dn≤800mm) is connected to so-called minor caliber pipe: at first with the two ends filling sealing manger board of polyethylene plastic-steel spirally-wound pipe; Generally need make 9-12 manger board for the tubing of Dn≤800mm; Finish behind the manger board tubing is put in the groove that has excavated on the ready-made ground; The alignment pipeline will dig the operation hole of suitable attended operation on the ground of pipeline junction.With the end that rubber sleeve is inserted in plastic-steel spirally-wound pipe, being inserted in length is the half the of rubber sleeve, second half is turned down return to be enclosed within same pipe end then; Two tubing pipe ends are aligned (axis is straight), and reserve the flexible gap that is not less than 10mm.Then rubber sleeve is turned over back and be enclosed within the opposite side pipe end bipeltate plate is wrapped in rubber sleeve outside, the bipeltate plate should evenly be fitted in outside the rubber sleeve naturally, and the counterpart nature is to leaning on and being in middle part, pipe top, and is sticking and fixing with adhesive tape.At last with stainless steel kink snare outside rubber plate.In the brake forming process to stainless steel kink (supply status is dull and stereotyped), the suitable distortion of circle continuously should be kept, dog leg or wrinkle must not be occurred.After the stainless steel sleeve bending is enclosed cover and put in place, put on and tight a bolt gradually, when tightening, answer the limit pilled-in selvedge to knock the stainless steel sleeve outer surface with rubber mallet, guarantee that steel bushing and rubber sleeve evenly fit, percussion power should appropriateness, must not make to occur plasticity on the plate face and cave in.
This connecting means is very high to the requirement of plastic-steel spirally-wound pipe pipe trench; Require high to weather and site condition simultaneously; Particularly can not submersible, the rubber plate water-swellable causes and can't normally connect; The cost of this employing rubber sleeve+rubber plate+stainless steel kink is very high, accounts for about 15% of whole tubing cost.Cause the tubing two ends to expose steel band owing to tubing often occurs colliding with in the process of transportation and in the cargo handling process simultaneously, need repair processing at the scene to tubing, the labor intensive material resources.
In the patent No. is that 201120127241 Chinese patent discloses the quick link that a kind of steel band strengthens entwining tube; Among the embodiment,, seal with glue-line at last through putting a helical bellows that processes again at pipe internal diameter spiral place; But this is this method is to have caused the tubing undergauge; Influence the latus rectum and the flow of pipeline, especially had tolerance when tubing processing and tube manufacture, and bigger for bigbore tubing tolerance; Space between tubing and pipe fitting also can be big more, is difficult to be connected and sealed with Polyurethane glue so.Simultaneously, in the jointing of this structure,, can't realize sealing, have the phenomenon of leaking and seep water, in actual engineering, can't use at all because the restriction of structure can't be adopted between joint and the pipe material inner wall to be welded to connect at all.Existing polyethylene plastic-steel spirally-wound pipe basically all is an external spiral, and pipe interior is straight and smooth face, so above-mentioned pipe joint just can't adapt at all, if use this joint, it is suitable to prepare special-purpose pipeline, does not meet engineering reality.
Summary of the invention
The technical problem that patent of the present invention will solve provides a kind of being connected firmly, and tightness is strong, does not need special tooling, with low cost, pressure resistance, the standard that is specially adapted to the is small-bore (pipe joint that the plastic-steel spirally-wound pipe of Dn≤800mm) connects.
The present invention solves the technological scheme that its technical problem takes: a kind ofly be used for the pipe joint that the polyethylene plastic-steel spirally-wound pipe connects; Comprise spiral tubing body; Said spiral tubing body outer surface is provided with the evagination spiral; It is characterized in that, also comprise the plug-in unit sleeve pipe and the socket joint sleeve pipe that are separately fixed at the outside, spiral tubing body two ends
Said plug-in unit sleeve pipe is made up of first volute and first straight tube; The first volute inboard has with the evagination spiral matches and rotation direction the is identical spiral grooves; And between first volute and first straight tube, be provided with the first flange projection, said first volute screws and is fixed on an end of spiral tubing body;
Said socket joint sleeve pipe is made up of second volute and second straight tube; The second volute inboard has with the evagination spiral matches and rotation direction the is identical spiral grooves; And the external port at second straight tube is provided with the second flange projection, and said second volute screws and be fixed on the other end of spiral tubing body; The external diameter of said first straight tube is less than or equal to the internal diameter of second straight tube.
Said spiral tubing body two ends port adopts sweat soldering to be connected with the socket joint sleeve pipe respectively with plug-in unit tube place.
The survivor of a murder attempt's stainless steel lathe dog that also comprises a plastic-coated, the cross section of said survivor of a murder attempt's stainless steel lathe dog are " ∏ " shape, and said survivor of a murder attempt's stainless steel lathe dog coats and is fastened on first flange and the second flange cooperation place.
Spiral tubing body is the polyethylene plastic-steel spirally-wound pipe material series that meets product operative norm CJ/T 270-2007, so this pipe joint is a kind of specific tube joint.
Said spiral tubing body is real wall spiral tubing, and caliber is less than or equal to 820mm.
Said first volute and the second volute effective helix angle length of thread engagement are 90mm; It is 60mm～100mm that said first straight tube is connected length with the effective socket joint of second straight tube, and single sleeve joint length is 145mm～190mm
The material of said spiral tubing body, plug-in unit sleeve pipe and socket joint sleeve pipe is high density polyethylene (HDPE).
Said first straight tube and second straight tube have certain taper.
Connect through the bolt group between said first flange and second flange.
Be equipped with electric fuse in said first straight tube outside or the second straight tube inner circumferential.
The invention has the beneficial effects as follows:
1, plug-in unit sleeve pipe and socket joint sleeve pipe can directly adopt the injection machine single injection-molded, and be so the processing of pipe joint is very convenient, quick.
When 2, connecting, directly with plug-in unit sleeve pipe and socket joint sleeve pipe rotary sleeve at the two ends of spiral tubing body, put the back and be welded into an integral body to pipe joint and tubing with special-purpose welding gun, owing to soldered outwardly, be convenient to welding operation.Pipe joint and tubing are the polyethylene material, and tubing and pipe joint form perfect integral body, the big and Never-leakage of joint strength.
3, because the unique texture of polyethylene plastic-steel spirally-wound pipe material has the external spiral stiffening rib, easy precession when connecting interior groove of external member and the cooperation of tubing body external spiral stiffening rib, and tightness is good.
4, during site operation, two pipes that only need to weld pipe joint carry out socket joint and connect, and speed of application is fast, and simple to operate, does not need professional frock, without special tool, increases work efficiency greatly.
5, because plug-in unit sleeve pipe and socket joint sleeve pipe are the polyethylene material; And the outside is a helix structure, and the real wall thickness of spiral part is 4mm～5mm, and the connection length of whole pipe joint is 145mm～190mm; Material consumption is few; Light weight is compared traditional stainless steel clamp special (rubber sleeve+rubber plate+stainless steel kink) Placement, and the tubing link cost reduces greatly.
6, two tubing connect and directly adopt interior socket joint, and are screw fit between sleeve pipe and the body, and tightness is strong, and is easy to operate, and can be welded to connect, and connect reliably non-leakagely, can not cause secondary pollution to environment, help protecting environment.
7, the attachment portion material is a polythene material, and is consistent with spiral tubing bulk material, can reach the working life identical with tubing.
8, the usage mode that sealing glue and rubber sheet gasket combine is adopted in seal for pipe joints, and dual fail-safe is non-leakage
9, the use sealing means is flexible, can adopt the connection of Hough formula socket joint, the connection of flange-type socket joint, free style socket joint to connect, and also can carry out the molten connection of socket joint electric heating.
Description of drawings
Fig. 1 is an erection drawing of the present invention;
Fig. 2 is a stereogram;
Fig. 3 is a plug-in unit sleeve pipe schematic representation;
Fig. 4 is a socket joint sleeve pipe schematic representation;
Fig. 5 is a whole-cutaway view of the present invention;
Fig. 6 is coupled condition figure of the present invention;
Fig. 7 is two of coupled condition figure of the present invention;
Fig. 8 is embodiment two inserting state figure;
Fig. 9 is embodiment three a socket joint sleeve pipe schematic representation;
Figure 10 is embodiment four a grafting schematic representation;
Among the figure: 1 spiral tubing body, 11 evagination spirals, 2 plug-in unit sleeve pipes, 21 first volutes, 22 first straight tubes; 23 spiral grooves, 24 first flanges, 3 socket joint sleeve pipes, 31 second volutes, 32 second straight tubes; 23 ' spiral grooves, 33 second flanges, 4 weld seams, 5 survivor of a murder attempt's stainless steel lathe dog, 6 resilient rubbber cushions; 7 bolts hole, 8 electric fuses, 91 right angle platforms, 92 rubber rings.
Embodiment
Embodiment one
Like Fig. 1～shown in Figure 7, a kind ofly be used for the pipe joint that the polyethylene plastic-steel spirally-wound pipe connects, comprise spiral tubing body 1, spiral tubing body 1 is the polyethylene plastic-steel spirally-wound pipe material of real wall, caliber is less than 820mm.Spiral tubing body outer surface is provided with evagination spiral 11, sets up steel band in the evagination spiral, is used to strengthen the intensity of tubing.Spiral tubing body is the polyethylene plastic-steel spirally-wound pipe material tubing series that meets product operative norm CJ/T 270-2007, and these all are existing structure.
Comprise that also the plug-in unit sleeve pipe 2 that is separately fixed at the outside, spiral tubing body two ends adopts once injection moulding with socket joint sleeve pipe 3, two sleeve pipes, work efficiency is high, and cost of production is low, and specifically structure is as follows:
Plug-in unit sleeve pipe 2 is made up of first volute 21 and first straight tube 22, and integral body is integrated injection molding.First volute, 21 inboards have and evagination rotary orientation same-handed groove 23, can screw operation, and for conveniently screwing, best, the width of spiral grooves is than the wide 2mm～3mm of thickness of polyethylene plastic-steel spirally-wound pipe evagination spiral.And the plug-in unit outside of sleeve between first volute 21 and first straight tube 22 has first flange, 24 projections, and integral body is integrated injection molding.First volute screws and is fixed on an end of polyethylene plastic-steel spirally-wound pipe material, because evagination spiral and spiral grooves are close-fitting, and has weld seam to connect, so favorable sealing property.
Socket joint sleeve pipe 3 is made up of second volute 31 and second straight tube 32; The second volute inboard has and evagination rotary orientation same-handed groove 23 '; And the external port at second straight tube is provided with second flange, 33 projections, and second volute screws and be fixed on the other end of spiral tubing body; The internal diameter that the external diameter of first straight tube is slightly less than second straight tube has certain taper for ease of first straight tube of pegging graft.It is 60mm～100mm that first straight tube is connected length with the effective socket joint of second straight tube.
Adopt sweat soldering to be connected with spiral tubing body end mouth cooperation place (inside) at above-mentioned plug-in unit sleeve pipe respectively with the socket joint sleeve pipe, form weld seam 4.The existence of weld seam can effectively be protected the liquid in managing, and prevents the generation of seeping water.
Also comprise survivor of a murder attempt's stainless steel lathe dog 5, the cross section of survivor of a murder attempt's stainless steel lathe dog is " ∏ " shape, and survivor of a murder attempt's stainless steel lathe dog coats and is fastened on first flange 24 and second flange, 33 cooperation places.Survivor of a murder attempt's stainless steel lathe dog can be by the anticorrosion steel card replacement of plastic-coated.
The matrix of spiral tubing body, plug-in unit sleeve pipe and socket joint sleeve pipe in above-mentioned is high-density polyethylene, and light weight is convenient to sweat soldering.
At first; Two sleeve pipes are connected (also can at building-site connect) by technology with pipeline body in factory; At the scene two sleeve pipes are pegged graft then, during grafting, preceding elder generation is enclosed within rubber sheet gasket the root of plug-in unit sleeve pipe; Simultaneously sealer is coated with respectively and touches outer wall and the inwall that is put on plug-in unit sleeve pipe and socket joint sleeve pipe; With expander two tubing are carried out socket joint when solidifying a little a little in glue and connect, socket joint connects the back has a flange-type convexity at two joint connection parts, the anticorrosion steel card of plastic-coated or the survivor of a murder attempt's stainless steel lathe dog of (as shown in the figure) of using a special use again along the flange-type protruding ring to buckling; Tighten with the anticorrosion steel card of key screw plastic-coated at last, piping erection is accomplished.
Above-mentioned structure constitutes Hough formula socket joint and connects.
Embodiment two
As shown in Figure 8, connect through the bolt group between first flange and second flange, and between two sleeve pipe joint socket, put rubber washer, constitute the flange-type socket joint and connect.According to the pipe diameter size, the number of the bolt hole 7 at flange place is provided with four holes, six holes or octal and does not wait.Use bolt to connect, to reach obturation effect.
Embodiment three
Like Fig. 9, be equipped with electric fuse 8 in the second straight tube inner circumferential, when pipeline connects, only need to insert power supply and can accomplish welding, thereby guarantee pipe-line system zero seepage, constitute the spigot and socket type electric smelting and connect.
Embodiment four
Like Figure 10, so-called free style socket joint connects, and in other words, the port of the two sleeve pipes outside is smooth-going, and plug-in unit sleeve pipe insertion portion middle right angle platform 91 places rubber ring 92 under the right angle platform, directly plug-in unit sleeve pipe 2 sockets are inserted in the plug-in unit sleeve pipe 3, to reach obturation effect.Through closed-water test, effect is better.This method wants high to the size requirement precision, and will guarantee to belong to the length of freely stretching flexibility and connect method.Similar with the interface of cement pipe.To be coated with oiling agent before connecing, such as soap solution etc.
The present invention does not need professional frock, does not use traditional stainless steel lathe dog (rubber sleeve+rubber plate+stainless steel kink) to connect, and link cost is cheap; Directly adopt once injection moulding, work efficiency is high, and cost of production is low; Use unique spiral bar structure simultaneously, save the polyethylene raw material in the time of proof strength more, it is lower that pipe fitting is combined full cost; Sleeve pipe and the precession of tubing spiral and thermofussion welding are connected into an integral body; Join strength is big, can bear bigger shearing force and tensile strength simultaneously, and sealing is intact.Socket joint connects, and socket joint partly has sealer and resilient rubbber cushion 6, and tubing connection part zero seepage can not cause phreatic secondary pollution.It is high that socket joint connects efficiency of construction, easy to operate, can save lot of manpower and material resources.
Certainly; The invention is not limited to above-mentioned mode of execution; Those of ordinary skill in the art also can do equivalent variations or replacement under the prerequisite of spirit of the present invention, distortion that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (10)
1. one kind is used for the pipe joint that the polyethylene plastic-steel spirally-wound pipe connects, and comprises spiral tubing body, and said spiral tubing body outer surface is provided with the evagination spiral, it is characterized in that, also comprises the plug-in unit sleeve pipe and the socket joint sleeve pipe that are separately fixed at the outside, spiral tubing body two ends,
Said plug-in unit sleeve pipe is made up of first volute and first straight tube; The first volute inboard has with the evagination spiral matches and rotation direction the is identical spiral grooves; And between first volute and first straight tube, be provided with the first flange projection, said first volute screws and is fixed on an end of spiral tubing body;
Said socket joint sleeve pipe is made up of second volute and second straight tube; The second volute inboard has with the evagination spiral matches and rotation direction the is identical spiral grooves; And the external port at second straight tube is provided with the second flange projection, and said second volute screws and be fixed on the other end of spiral tubing body; The external diameter of said first straight tube is less than or equal to the internal diameter of second straight tube.
2. the pipe joint that is used for the connection of polyethylene plastic-steel spirally-wound pipe according to claim 1 is characterized in that said spiral tubing body two ends port adopts sweat soldering to be connected with the socket joint sleeve pipe respectively with plug-in unit tube place.
3. the pipe joint that is used for the connection of polyethylene plastic-steel spirally-wound pipe according to claim 1 and 2; It is characterized in that; Also comprise survivor of a murder attempt's stainless steel lathe dog, the cross section of said survivor of a murder attempt's stainless steel lathe dog is " ∏ " shape, and said survivor of a murder attempt's stainless steel lathe dog coats and is fastened on first flange and the second flange cooperation place.
4. the pipe joint that is used for the connection of polyethylene plastic-steel spirally-wound pipe according to claim 1 and 2 is characterized in that, said spiral tubing body is the polyethylene plastic-steel spirally-wound pipe material series that meets product operative norm CJ/T 270-2007.
5. the pipe joint that is used for the connection of polyethylene plastic-steel spirally-wound pipe according to claim 1 and 2 is characterized in that said spiral tubing body is real wall spiral tubing, and caliber is less than or equal to 820mm.
6. the pipe joint that is used for the connection of polyethylene plastic-steel spirally-wound pipe according to claim 5 is characterized in that said first volute and the second volute effective helix angle length of thread engagement are 90mm; It is 60mm～100mm that said first straight tube is connected length with the effective socket joint of second straight tube.
7. the pipe joint that is used for the connection of polyethylene plastic-steel spirally-wound pipe according to claim 1 is characterized in that the material of said spiral tubing body, plug-in unit sleeve pipe and socket joint sleeve pipe is high density polyethylene (HDPE).
8. the pipe joint that is used for the connection of polyethylene plastic-steel spirally-wound pipe according to claim 1 and 2 is characterized in that said first straight tube and second straight tube have certain taper.
9. the pipe joint that is used for the connection of polyethylene plastic-steel spirally-wound pipe according to claim 1 and 2 is characterized in that, connects through the bolt group between said first flange and second flange.
10. the pipe joint that is used for the connection of polyethylene plastic-steel spirally-wound pipe according to claim 1 and 2 is characterized in that, is equipped with electric fuse in said first straight tube outside or the second straight tube inner circumferential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100023610A CN102537571A (en) | 2012-01-06 | 2012-01-06 | Pipe joint used for connecting polyethylene plastic-steel winding pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100023610A CN102537571A (en) | 2012-01-06 | 2012-01-06 | Pipe joint used for connecting polyethylene plastic-steel winding pipes |
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| CN102537571A true CN102537571A (en) | 2012-07-04 |
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| CN2012100023610A Pending CN102537571A (en) | 2012-01-06 | 2012-01-06 | Pipe joint used for connecting polyethylene plastic-steel winding pipes |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914205A (en) * | 2012-11-02 | 2013-02-06 | 苏州际能环境能源技术有限公司 | Metal hot-melting welding head for plum blossom spiral-type buried pipe |
| CN102966804A (en) * | 2012-11-15 | 2013-03-13 | 扬中市江南橡塑厂 | Filling corrugated pipe of filling valve |
| CN105570585A (en) * | 2014-11-04 | 2016-05-11 | 福特全球技术公司 | Duct assembly with a connector |
| TWI571586B (en) * | 2015-06-24 | 2017-02-21 | Ian Larsen | Large diameter submerged pipe joint device and its combination method |
| CN108612934A (en) * | 2018-05-17 | 2018-10-02 | 付杰 | A kind of central gas supply pipeline for cities and towns natural gas |
| CN109487840A (en) * | 2018-11-30 | 2019-03-19 | 包头钢铁（集团）有限责任公司 | A kind of bull-dozer air intake duct |
| JP2021001618A (en) * | 2019-06-20 | 2021-01-07 | 日立金属株式会社 | Electric fusion plug |
| CN114543562A (en) * | 2022-02-25 | 2022-05-27 | 北京市京海换热设备制造有限责任公司 | Core-pulling type welded plate shell type heat exchanger |
| CN115111461A (en) * | 2021-12-23 | 2022-09-27 | 重庆水务集团江津自来水有限公司 | Rapid first-aid repair method for PE pipeline breakage |
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| CN202469341U (en) * | 2012-01-06 | 2012-10-03 | 阴法军 | Pipe joint used for connecting polyethylene glass-reinforced plastic winding pipe |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914205A (en) * | 2012-11-02 | 2013-02-06 | 苏州际能环境能源技术有限公司 | Metal hot-melting welding head for plum blossom spiral-type buried pipe |
| CN102966804A (en) * | 2012-11-15 | 2013-03-13 | 扬中市江南橡塑厂 | Filling corrugated pipe of filling valve |
| CN105570585A (en) * | 2014-11-04 | 2016-05-11 | 福特全球技术公司 | Duct assembly with a connector |
| TWI571586B (en) * | 2015-06-24 | 2017-02-21 | Ian Larsen | Large diameter submerged pipe joint device and its combination method |
| US10180203B2 (en) | 2015-06-24 | 2019-01-15 | Jan Larsen | Underwater pipe and connector assembly and method of assembling an underwater pipe and a connector |
| CN108612934A (en) * | 2018-05-17 | 2018-10-02 | 付杰 | A kind of central gas supply pipeline for cities and towns natural gas |
| CN109487840A (en) * | 2018-11-30 | 2019-03-19 | 包头钢铁（集团）有限责任公司 | A kind of bull-dozer air intake duct |
| JP2021001618A (en) * | 2019-06-20 | 2021-01-07 | 日立金属株式会社 | Electric fusion plug |
| JP7361507B2 (en) | 2019-06-20 | 2023-10-16 | 株式会社プロテリアル | electric fusion plug |
| CN115111461A (en) * | 2021-12-23 | 2022-09-27 | 重庆水务集团江津自来水有限公司 | Rapid first-aid repair method for PE pipeline breakage |
| CN115111461B (en) * | 2021-12-23 | 2024-01-30 | 重庆水务集团江津自来水有限公司 | Rapid rush repair method for PE pipeline rupture |
| CN114543562A (en) * | 2022-02-25 | 2022-05-27 | 北京市京海换热设备制造有限责任公司 | Core-pulling type welded plate shell type heat exchanger |
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Application publication date: 20120704 |