CN105909888B - Antiseep pipe-line system that PAP is pressure-resistant - Google Patents
Antiseep pipe-line system that PAP is pressure-resistant Download PDFInfo
- Publication number
- CN105909888B CN105909888B CN201610419761.XA CN201610419761A CN105909888B CN 105909888 B CN105909888 B CN 105909888B CN 201610419761 A CN201610419761 A CN 201610419761A CN 105909888 B CN105909888 B CN 105909888B
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- locking
- spiral
- pap
- pipe
- groove
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 9
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000004719 irradiation crosslinked polyethylene Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- 229920000571 Nylon 11 Polymers 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- -1 Polyethylene Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000002384 drinking water standard Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
- F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts with metal rings which bite into the wall of the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0225—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means without sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
Abstract
The invention discloses a kind of pressure-resistant antiseep pipe-line system of PAP, belongs to multiple tube interconnection technique field, pipe-line system includes improved PAP and supporting pipe connection, key are：Pipe connection includes the conic pipe joint that at least one end matches with the flared end of improved PAP and the locking nut being threadedly coupled with conic pipe joint, and the flared end of improved PAP compression of going forward side by side is formed into pressure-resistant antiseep pipeline structure by the biconial sealing surface self-locking structure formed in pipe connection.The method have the benefit that：Spiral self-locking groove on locking nut cooperatively forms the self-locking structure of multiple tube with helixseal groove, effectively prevents multiple tube from loosening；The groove of both forward and reverse directions can effectively prevent whole pipe connection from installing the loosening of rear locking nut on the inwall of locking nut and locking tapered sleeve, ensure that the reliability and stability used for a long time after multiple tube connection.
Description
Technical field
The invention belongs to multiple tube interconnection technique field, specially a kind of PAP is connected to be formed with pipe connection
Pipe-line system.
Background technology
With the development of technology, hot-water heating tubing is changed from metal tube to multiple tube.Multiple tube is answered by materials such as aluminium, copper, steel
Close the tubing of new generation that inside and outside plastics, nylon or special layer of composite material are formed.PAP is because with outstanding
Decay resistance and good deformation adaptability and the preferred pipeline as daily life and part industrial occasions combines material
Material.
At present, above-mentioned joint for aluminium-plastic composite tube frequently be pincers-pressed type and nut bite type structure.Wherein, pincers pressure
Formula joint need to be installed with special pressing tongs, waste time and energy, and if installing space than narrow, can not also be completed to install,
In addition, if pincers-pressed type joint is not pressed onto position by installation personnel imprudence, can also cause to leak.If pincers-pressed type joint is let out
Leakage, can not be dismantled, it is necessary to be cut tubing, maintenance cost is high, and joint can not reuse.Nut collar joint
It is that multiple tube is pressed on pipe joint simultaneously by the cooperation that the multiple tube after tube expansion and pipe joint are connected through to nut and pipe joint
Play sealing function.The thrust that multiple tube is applied by nut is fixed on pipe joint, and the sealing effectiveness difference of this mode is simultaneously
And there is the risk leaked after nut loosening.
The content of the invention
The problem to be solved in the present invention is to provide a kind of pressure-resistant antiseep pipe-line system of PAP, by pipe joint
Upper design helixseal groove, spiral self-locking groove is designed on locking nut, after PAP is locked nut compression
Sealing function is played in plastic-aluminum combined inside pipe wall press-in helixseal groove, while plastic-aluminum combined pipe outer wall press-in spiral self-locking is recessed
The self-locking structure of multiple tube is cooperatively formed in groove with helixseal groove, there is good pressure-resistant leakage performance.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of pressure-resistant antiseepage fistulae of PAP
Road system, pipe-line system includes improved PAP and supporting pipe connection, key are：Wrapped in pipe connection
Include the conic pipe joint and be threadedly coupled with conic pipe joint that at least one end matches with the flared end of improved PAP
Locking nut, by the biconial sealing surface self-locking structure formed in pipe connection by the enlarging of improved PAP
Compression of going forward side by side is held to form pressure-resistant antiseep pipeline structure.
Cone seal end that further, conic pipe joint structure includes being engaged with the flared end of PAP,
The male threaded joint that coordinates with locking nut and it is located at the helixseal groove of cone seal end outer surface.
Further, the structure of locking nut include inwall be provided be engaged with the male threaded joint of conic pipe joint
Female threaded joint and the taper compressed part of horn-like cavity is cooperatively formed with the cone seal end of conic pipe joint.
Further, spiral self-locking groove, the spiral side of the spiral self-locking groove are provided with the inwall of taper compressed part
To the hand of spiral identical with the hand of spiral of female threaded joint screw thread and helixseal groove on the contrary, spiral self-locking groove
The biconial sealing surface self-locking structure of PAP is cooperatively formed with helixseal groove.
Further, the pitch of the spiral self-locking groove is consistent with the pitch of female threaded joint screw thread.
Further, locking tapered sleeve is connected with the end thread of taper compressed part, is set in the conical inboard wall of locking tapered sleeve
There is spiral to lock groove, the hand of spiral of spiral locking groove, the spiral side of locking tapered sleeve and screw thread at taper compressed part screw thread
To and helixseal groove the hand of spiral it is consistent, spiral locking groove and spiral self-locking groove cooperatively form locking nut from
Lock construction.
Further, the pitch and the pitch of locking tapered sleeve and screw thread at taper compressed part screw thread of the spiral locking groove
Unanimously.
Further, the length ratio of the length at cone seal end and taper compressed part is 1.2 ~ 3：1.
Further, preposition locking nut is provided between conic pipe joint and locking nut.
Further, the PAP is followed successively by radiant crosslinked polyethylene layer, aluminium alloy layer and nylon from inside to outside
Layer or radiant crosslinked polyethylene layer.
The method have the benefit that：1st, helixseal groove, PAP quilt are designed with cone seal end
Its inwall, which deforms to be pressed into helixseal groove, after compression plays sealing function so that the whole pipeline after installation has
Good sealing；2nd, the spiral self-locking groove on locking nut and above-mentioned helixseal groove cooperatively form oneself of multiple tube
Lock construction, effectively prevent multiple tube from loosening；3rd, the groove of both forward and reverse directions can be effective on the inwall of locking nut and locking tapered sleeve
Prevent whole pipe connection from installing the loosening of rear locking nut, ensure that multiple tube connection after use for a long time it is reliable
Property and stability.
The present invention is described in detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the structural representation of the pressure-resistant antiseep pipe-line system embodiment one of PAP of the present invention；
Fig. 2 is the scheme of installation of the pressure-resistant antiseep pipe-line system embodiment one of PAP of the present invention；
Fig. 3 is the structural representation of locking nut in the pressure-resistant antiseep pipe-line system of PAP of the present invention；
Fig. 4 is the structural representation of the pressure-resistant antiseep pipe-line system embodiment two of PAP of the present invention.
In the accompanying drawings：1 is conic pipe joint, and 1-1 is cone seal end, and 1-2 is helixseal groove, and 1-3 is external screw thread
Connecting portion, 2 be locking nut, and 2-1 is female threaded joint, and 2-2 is taper compressed part, and 2-3 is spiral self-locking groove, and 3 be aluminium
Plastic composite, 3-1 are radiant crosslinked polyethylene layers, and 3-2 is nylon layer or radiant crosslinked polyethylene layer, and 3-3 is aluminium alloy layer, 4
It is locking tapered sleeve, 4-1 is spiral locking groove, and 5 be preposition locking nut.
Embodiment
Embodiment one：Referring to accompanying drawing 1-3, the invention provides a kind of pressure-resistant antiseep pipe-line system of PAP, pipe
Road system includes improved PAP 3 and supporting pipe connection, key are：Pipe connection is included at least
Conic pipe joint 1 that one end matches with the flared end of improved PAP 3 and the locking being threadedly coupled with conic pipe joint 1
Nut 2, by the biconial sealing surface self-locking structure formed in pipe connection by the flared end of improved PAP 3 simultaneously
Enter compression and form pressure-resistant antiseep pipeline structure.
Cone seal end 1-1 that the structure of conic pipe joint 1 includes being engaged with the flared end of PAP 3, with
The male threaded joint 1-3 of the cooperation of the locking nut 2 and helixseal groove 1-2 for being located at cone seal end 1-1 outer surfaces.Locking
After PAP 3 is pressed on conic pipe joint 1 by tight nut 2, the inner wall deformation of PAP 3 enters above-mentioned helixseal
In groove 1-2, so as to play sealing, antiseep effect.Helixseal groove 1-2 is preferably located at cone seal end 1-1 close to outer
Threaded joints 1-3 outer surface, so that sealing effectiveness is optimal.
Above-mentioned helixseal groove 1-2 is provided with the length of 1-3 pitch, pitch in cone seal end 1-1 outer surface
For 3-6mm, helixseal groove 1-2 groove width is 0.2-1.2mm, groove depth 0.2-1.2mm.Cone seal end 1-1 cone angle
For 3-7 °, less cone angle facilitates the expander of compound pipe end, is also convenient for installing.
The structure of locking nut 2 includes inwall provided with being engaged with the male threaded joint 1-3 of conic pipe joint 1
The threaded joints 2-1 and taper compressed part 2- that horn-like cavity is cooperatively formed with the cone seal end 1-1 of conic pipe joint 1
2.Taper compressed part 2-2 interior cone angle is less than or equal to cone seal end 1-1 outside cone angle, to adapt at compound pipe port after enlarging
Deformation（The thickness of multiple tube is thinner at port）Make the seal face of multiple tube larger, also make helixseal groove 1-2
The PAP 3 at place is by maximum thrust.
Be provided with spiral self-locking groove 2-3 in taper compressed part 2-2 inwall, the spiral self-locking groove 2-3 hand of spiral with
The hand of spiral of female threaded joint 2-1 screw threads is identical, opposite with the helixseal groove 1-2 hand of spiral.Spiral self-locking is recessed
Groove 2-3 and helixseal groove 1-2 cooperatively forms the biconial sealing surface self-locking structure of PAP, prevents PAP
3 unclamp with conic pipe joint 1, depart from.Spiral self-locking groove 2-3 pitch is consistent with the pitch of female threaded joint 2-1 screw threads.
Further, to prevent locking nut 2 from loosening, locking cone is connected with taper compressed part 2-2 end thread
Set 4, spiral locking groove 4-1, the spiral locking groove 4-1 hand of spiral, locking cone are provided with the conical inboard wall of locking tapered sleeve 4
Cover 4, spiral locks consistent with the hand of spiral of screw thread at taper compressed part 2-2 screw threads and the helixseal groove 1-2 hand of spiral
Tight groove 4-1 and spiral self-locking groove 2-3 cooperatively forms the self-locking structure of locking nut.Spiral locking groove 4-1 pitch with
It is consistent with the pitch of screw thread at taper compressed part 2-2 screw threads to lock tapered sleeve 4.
Installed after locking nut 2 and conic pipe joint 1 install, then by locking tapered sleeve 4 with locking nut 2.Locking
The threaded connection part of tapered sleeve 4 and locking nut 2 should add screw threads for fastening agent.After locking nut 2 and locking tapered sleeve 4 install,
The outer wall of PAP 3 is deformed into locking tapered sleeve 4 and the groove of locking nut 2, and the hand of spiral of two grooves is on the contrary, rise
To the purpose for preventing that locking nut 2 from loosening.
Above-mentioned spiral self-locking groove 2-3 pitch is consistent with the pitch of screw thread in threaded joints 2-1, spiral self-locking groove
4-1 pitch is consistent with the pitch of locking tapered sleeve 4 and the threaded connection part screw thread of locking nut 2, and these measures ensure that
The outer wall of PAP 3 will not be damaged in installation process.
To ensure the installation of locking tapered sleeve 4, cone seal end 1-1 length and taper compressed part 2-2 length ratio are
1.2~3：1.
Above-mentioned PAP 3 is followed successively by radiant crosslinked polyethylene layer 3-1, aluminium alloy layer 3-3 and nylon from inside to outside
Layer or radiant crosslinked polyethylene layer（PE-Xc）3-2.It will be combined with each other by hotmelt between above layers.Crosslinking with radiation
Polyethylene layer（PE-Xc）Good with air-tightness, pure physical associations meet safe drinking water standard, high-low temperature resistant（-70℃-110
℃）, inner wall smooth effectively reduces resistance, is not likely to produce incrustation scale, corrosion-resistant, resists the effect such as a variety of chemical substances；Particularly it has
There is creep memory effect, after shape changes, original state can be restored to.Radiant crosslinked polyethylene layer 3-1 and conical pipe
Joint 1 is engaged, and fabulous face type sealant can be formed between PE-Xc internal faces and pipe fitting contact surface, can be carried significantly
Riser road leakage resistance energy.Aluminium alloy layer 3-3 has the advantages that intensity is higher, in light weight, anti-oxidant strong.When outer layer is nylon layer
Shi Youxuan uses nylon-11 or Nylon-12.
The specific installation process of pipe-line system of the present invention is as follows：It will need to connect pipe connection by tube expander first
The one or both ends of PAP 3 are expanded into taper.PAP 3 is loaded into cone seal end 1-1 and ensures completely to
Helixseal groove 1-2 is covered in.Then installation locking nut 2 makes PAP 3 fully press to male threaded joint 1-3
Tightly.Now the ectonexine compressive deformation of PAP 3 is respectively enterd in helixseal groove 1-2 and spiral self-locking groove 2-3,
Play a part of sealing and prevent multiple tube from loosening.Last installation locking tapered sleeve 4 exists on locking nut 2 when mounted
Threaded connection place adds fastened by screw agent.Now the outer layer compressive deformation of PAP 3 enters the spiral locking of locking tapered sleeve 4
In groove 4-1.Spiral locks groove 4-1 and spiral self-locking groove 2-3 and coordinates the effect for serving and preventing that locking nut 2 from loosening.
Embodiment two：Referring to accompanying drawing 4, before being provided with unlike embodiment one between conic pipe joint 1 and locking nut 2
Put locking nut 5.Locking nut 2 and preposition locking nut 5 share male threaded joint 1-3.It is first in specifically installation short range
Preposition locking nut 5 is first arranged on conic pipe joint 1, after locking nut 2 compresses multiple tube and then 7 rotate preposition locking screws
Mother 5 makes preposition locking nut 5 and locking nut 2 mutually compress, and plays a part of preventing locking nut 2 from loosening.
Embodiment three：Locking nut 2 and preposition locking nut 5 are only provided with unlike embodiment two.
Using above-mentioned technical proposal, antiseep pipe-line system that PAP of the invention is pressure-resistant can use in long-time
Still there is good sealing, leakproof afterwards, be highly suitable in the pipe-line system of daily life and part industrial occasions.
Claims (6)
1. a kind of pressure-resistant antiseep pipe-line system of PAP, pipe-line system include improved PAP（3）With it is supporting
Pipe connection, it is characterised in that：Pipe connection includes at least one end and improved PAP（3）Enlarging
Hold the conic pipe joint of matching（1）And and conic pipe joint（1）The locking nut of threaded connection（2）, by pipe connection
The biconial sealing surface self-locking structure of formation is by improved PAP（3）Flared end compression of going forward side by side form pressure-resistant antiseep
Pipeline structure；
The conic pipe joint（1）Structure include and PAP（3）The cone seal end that is engaged of flared end（1-
1）With locking nut（2）The male threaded joint of cooperation（1-3）And it is located at cone seal end（1-1）The helixseal of outer surface
Groove（1-2）；
The locking nut（2）Structure include inwall and be provided with and conic pipe joint（1）Male threaded joint（1-3）Match
The female threaded joint of conjunction（2-1）And and conic pipe joint（1）Cone seal end（1-1）Cooperatively form horn-like cavity
Taper compressed part（2-2）；
In taper compressed part（2-2）Inwall be provided with spiral self-locking groove（2-3）, the spiral self-locking groove（2-3）Spiral
Direction and female threaded joint（2-1）The hand of spiral of screw thread is identical, with helixseal groove（1-2）The hand of spiral on the contrary,
Spiral self-locking groove（2-3）With helixseal groove（1-2）Cooperatively form the biconial sealing surface self-locking structure of PAP；
The helixseal groove（1-2）It is located at cone seal end（1-1）Close to male threaded joint（1-3）Outer surface, institute
State taper compressed part（2-2）Interior cone angle be less than or equal to cone seal end（1-1）Outside cone angle；
In taper compressed part（2-2）End thread be connected with locking tapered sleeve（4）, in locking tapered sleeve（4）Conical inboard wall be provided with
Spiral locks groove（4-1）, spiral locking groove（4-1）The hand of spiral, locking tapered sleeve（4）With taper compressed part（2-2）Spiral shell
The hand of spiral of screw thread and helixseal groove at line（1-2）The hand of spiral it is consistent, spiral locking groove（4-1）With spiral certainly
Lock crossbeam（2-3）Cooperatively form the self-locking structure of locking nut.
2. the pressure-resistant antiseep pipe-line system of PAP according to claim 1, it is characterised in that：The spiral self-locking
Groove（2-3）Pitch and female threaded joint（2-1）The pitch of screw thread is consistent.
3. the pressure-resistant antiseep pipe-line system of PAP according to claim 1, it is characterised in that：The spiral locking
Groove（4-1）Pitch with locking tapered sleeve（4）With taper compressed part（2-2）The pitch of screw thread is consistent at screw thread.
4. the pressure-resistant antiseep pipe-line system of PAP according to claim 1, it is characterised in that：Cone seal end
（1-1）Length and taper compressed part（2-2）Length ratio be 1.2 ~ 3：1.
5. the pressure-resistant antiseep pipe-line system of PAP according to claim 1, it is characterised in that：In conic pipe joint
（1）And locking nut（2）Between be provided with preposition locking nut（5）.
6. the pressure-resistant antiseep pipe-line system of PAP according to claim any one of 1-5, it is characterised in that：It is described
PAP（3）Radiant crosslinked polyethylene layer is followed successively by from inside to outside（3-1）, aluminium alloy layer（3-3）And nylon layer or radiation
Cross-linked polyethylene layer（3-2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610419761.XA CN105909888B (en) | 2016-06-14 | 2016-06-14 | Antiseep pipe-line system that PAP is pressure-resistant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610419761.XA CN105909888B (en) | 2016-06-14 | 2016-06-14 | Antiseep pipe-line system that PAP is pressure-resistant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105909888A CN105909888A (en) | 2016-08-31 |
| CN105909888B true CN105909888B (en) | 2018-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610419761.XA Active CN105909888B (en) | 2016-06-14 | 2016-06-14 | Antiseep pipe-line system that PAP is pressure-resistant |
Country Status (1)
| Country | Link |
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| CN (1) | CN105909888B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059601A (en) * | 2017-04-17 | 2017-08-18 | 邢台路桥建设总公司 | Pin-connected panel steel assembled pier |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2605453Y (en) * | 2002-02-04 | 2004-03-03 | 周国平 | Equi-diameter double safety joint of aluminium-plastic composite pipe |
| CN200968465Y (en) * | 2006-07-21 | 2007-10-31 | 张天林 | Improved large flow composite pipes joint coupling members |
| JP2009063090A (en) * | 2007-09-06 | 2009-03-26 | Daikin Ind Ltd | Flare type pipe connection structure, valve, flare type pipe joint and refrigeration equipment |
| US8585099B2 (en) * | 2008-09-08 | 2013-11-19 | Saint-Gobain Performance Plastics Corporation | Sanitary coupling assembly |
| CN201507744U (en) * | 2009-09-21 | 2010-06-16 | 云南丽江机床有限公司 | Plastic flexible pipe connector |
| CN102032413A (en) * | 2009-09-29 | 2011-04-27 | 上海三山信邦科技有限公司 | Expanding and extruding connection method for mechanical connection of plastic pipes |
| CN205689945U (en) * | 2016-06-14 | 2016-11-16 | 张天林 | Antiseep pipe-line system that PAP is pressure |
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2016
- 2016-06-14 CN CN201610419761.XA patent/CN105909888B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105909888A (en) | 2016-08-31 |
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