CN108386628A - A kind of pipe fitting joint structure - Google Patents
A kind of pipe fitting joint structure Download PDFInfo
- Publication number
- CN108386628A CN108386628A CN201810399801.8A CN201810399801A CN108386628A CN 108386628 A CN108386628 A CN 108386628A CN 201810399801 A CN201810399801 A CN 201810399801A CN 108386628 A CN108386628 A CN 108386628A
- Authority
- CN
- China
- Prior art keywords
- pipe fitting
- sealing
- wall
- plug termination
- joint structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/03—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed in the socket before connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Joints With Sleeves (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The present invention relates to a kind of pipe fitting joint structures, including are provided with the first pipe fitting of plug termination end；It is provided with the second pipe fitting of socket end, the socket end is sheathed on the outside of the plug termination end, it is characterised in that：Periphery wall along the plug termination end is provided with the limiting section of protrusion, the expansion mouth for allowing the plug termination end to be inserted into is provided on the socket end, the expansion mouth deformation, which fits on the outer surface of the limiting section, to be formed and the affixed screens portion of the limiting section, generally tubular flexible sealing element is provided between the outer wall of the plug termination end and the inner wall of socket end, and the port section for being sheathed on the plug termination end of one end of the sealing element, the other end of the sealing element extend along the inner wall of socket end away from the direction of the port of the plug termination end.This kind of pipe fitting joint structure in-site installation is convenient, does not influence flow and bearing capacity.
Description
Technical field
The present invention relates to pipe fitting connection areas, and in particular to a kind of pipe fitting joint structure.
Background technology
The conveying of the fluids such as current gas, liquid is required to use pipe fitting, and conveys that generally require will be more at a distance
It is connected between a pipe fitting, wherein crimping is a kind of connection type commonly used in the prior art.Pipe fitting in the prior art connects
The mode directly operated frequently with erecting bed is connected, used tool is usually to pushing up formula card compression mould, to pushing up formula card compression mould
It is made of upper die and lower die, pipe fitting is inserted into bellmouth pipe fitting to positioning step position, with dedicated card pressure tool to U-shaped when installation
The card splenium position of slot and U-type groove one or both sides is carried out at the same time extruding, and rubber seal seals after being squeezed, card splenium
Pipe fitting and bellmouth pipe fitting contraction distortion simultaneously at position, it is that hexagonal configuration or circular positioning are fixed and made to form cross-sectional shape
Card laminated structure, the structure of hexagonal configuration specifically refer to the patent of invention that notification number is CN1217771A《Pipe is manufactured to squeeze
The method and apparatus of crimp head》；Circular structure specifically refers to the utility model patent that notification number is CN201827546U《No
Become rusty steel pipe ring pressure connecting structure and annulus pressure mould for jam-on type tube fitting》.
As it can be seen that connection structure above-mentioned in order to realize the connecting portion of pipe fitting and connecting tube possess good leakproofness and compared with
Good anti-pull-out property produces deformation in card laminate section and causes undergauge, and the bore of general card laminate section only has original
80% or so, it can greatly influence the flow of wherein fluid；In addition, since pipe fitting and connecting tube are required to nearly 20% left side of deformation
The pressure on the right side, the bigger needs of bore is bigger, and corresponding card pressure tool can be more and more huger and heavy, moves and use this kind card pressure
Tool is more inconvenient, so as to cause use the bore of pipe fitting that this kind of mode connect generally in 50mm hereinafter, not adapting to more
More occasions.
It is particularly important that link is crimped in the installation of stainless steel pipe.Whether crimp crimps in place, and whether mold wears
The factors such as deformation, directly affect the sealing performance and anti-pull-out property of stainless steel pipe.Sealing performance is not in place, and pipe fitting is easy hair
Raw leakage, anti-pull-out property is not in place, and for pipe fitting in final acceptance hydraulic pressure test, the increase generation of water pressure is de- in by pipeline
It pulls out, finally generates leak.
Invention content
The technical problem to be solved by the present invention is to a kind of in-site installations of present situation offer for the prior art conveniently, not shadow
Ring flow and the good pipe fitting joint structure of bearing capacity.
Technical solution is used by the present invention solves above-mentioned technical problem：A kind of pipe fitting joint structure, including be provided with
First pipe fitting of plug termination end；It is provided with the second pipe fitting of socket end, the socket end is sheathed on the outside of the plug termination end, special
Sign is：Periphery wall along the plug termination end is provided with the limiting section of protrusion, is provided on the socket end on the socket end
Be provided with the expansion mouth for allowing the plug termination end to be inserted into, the expansion mouth deformation fit on the outer surface of the limiting section formed with
The affixed screens portion of the limiting section, being provided between the outer wall of the plug termination end and the inner wall of socket end generally tubular has
The sealing element of elasticity, and the port section for being sheathed on the plug termination end of one end of the sealing element, the sealing element
The other end along socket end inner wall away from the plug termination end port direction extend.
Further, the vertical sectional shape of the limiting section is the low mountain peak shape in intermediate high both sides.The limiting section of this kind of shape
Good limit effect and convenient for manufacture.
Further, the sealing element includes sealing substrate and sealing lip, and the sealing substrate is tubular and outer side surface
It fits with the inner wall of socket end, the sealing lip extends from the madial wall of sealing substrate to the outer wall of plug termination end so that described
Seal lip ring around and gluing, sealing described in plug termination end outer wall, and wall surface and institute of the sealing lip close to the sealing substrate side
The angle stated between the madial wall of sealing substrate is acute angle.The outer wall of this kind of sealing element plug termination end a when in use is to sealing lip
The extruding force of oriented sealing substrate side, while sealing lip has restorable trend so that the fitting between them is more tight
It is close；In addition, when the fluids such as water or gas flow wherein, there is impact close to the side of sealing substrate for sealing lip, further
It drives sealing lip to be adjacent to the outer wall of plug termination end, is further sealed, therefore, this kind of sealing element 3 is more than after 60% in buckling
There can also be good sealing effect, and the sealing element buckling of common tubular is more than that will fail after 50% in the prior art,
It leaks.
Further, second pipe fitting both ends are both provided with the socket end, and the sealing element is set to described second
The middle part of pipe fitting, the sealing element include the sealing substrate and two sealing lips for being set to the sealing substrate both ends.
Second fitting structure of this kind of structure is simple and good airproof performance.
Further, each socket end of second pipe fitting is both provided with first pipe fitting, and two the first pipe fittings
There is gap between opposite port.The setting in gap enables the fluid in pipe fitting to flow into sealing ring, reinforces leakproofness and makes
The circulation for obtaining fluid is more smoothly.
Preferably, the length in the gap is 2~4mm.The gap of this length is more advantageous to the sealing of sealing element.
Preferably, relationships of the axial length s of the sealing lip between sealing element axial length L is 0.2L
≤ s ＜ 0.5L.The sealing effect of the sealing lip of this length relation is more preferable.
Preferably, the angular range of the angle is 30~60 °.The sealing effect of the sealing lip of this angular range is more
It is good.
Preferably, the limiting section relative to the extreme higher position of the periphery wall protrusion of the plug termination end height h be 3~
5mm.The limit effect of the limiting section of this kind of height is more preferable.
Compared with the prior art, the advantages of the present invention are as follows:Limiting section makes this kind of pipe fitting connect with the cooperation in screens portion
Anti-pull-out property, the bearing capacity of structure are more preferable, and the steel pipe pressure resistance of DN65 as shown in Figure 5 can reach 6MPa, and can pressurize
30min or more；And this kind of screens portion only needs expansion mouth to carry out bending deformation and limiting section cooperation, need not carry out pipe
The contraction distortion in road, required installation pressure is smaller, and the installation tool for carrying small volume is only needed when installing at the scene
(the bigger card pressure tool volume of pressure is bigger), it is easy for installation, quick, use this kind of pipe fitting joint structure, the steel of 100mm bores
Pipe uses 32,000 Ns of card pressure tools below, and the steel pipe of prior art 50mm bores just needs 40,000 Ns or more of card pressure
Tool；This kind of pipe fitting connection type does not have to undergauge, and using the steel pipe of same bore, flow is greater than the company of undergauge in the prior art
Connect mode；And sealing element, which is set to this position, can play better seal effect.
Description of the drawings
Fig. 1 is the structural schematic diagram of the pipe fitting joint structure of the embodiment of the present invention；
Fig. 2 is the diagrammatic cross-section of the pipe fitting joint structure of the embodiment of the present invention；
Fig. 3 is the diagrammatic cross-section of the second pipe fitting of the embodiment of the present invention；
Fig. 4 is the pipe fitting schematic diagram before the card pressure of the embodiment of the present invention；
Fig. 5 is the data of pressure test.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.
As shown in Fig. 1 to 5, this kind of pipe fitting joint structure, including it is provided with the first pipe fitting 1 of plug termination end a；It is provided with undertaking
It holds the second pipe fitting 2 of b, socket end b to be sheathed on the outside of plug termination end a, the limiting section of protrusion is provided with along the periphery wall of plug termination end a
The expansion mouth c for allowing the plug termination end a to be inserted into is provided on 11, socket end b, the expansion mouth c deformations fit in the limiting section
Formation and the affixed screens portion 21 of the limiting section 11 on 11 outer surface, between the outer wall and the inner wall of socket end b of plug termination end a
It is provided with generally tubular sealing element 3, and the port section for being sheathed on plug termination end a of one end of sealing element 3, sealing member
The other end of part 3 extends along the inner wall of socket end b away from the direction of the port of plug termination end a.The limiting section 11 of this implementation
Vertical sectional shape is the low mountain peak shape in intermediate high both sides, this kind of shape is convenient for manufacture, in addition to this it is also an option that other limits
11 shape of position portion is not easy relative movement as long as the first pipe fitting 1 and the second pipe fitting 2 can be made to be connected with each other securely.Limiting section 11
The height h of the extreme higher position of periphery wall protrusion relative to plug termination end a is 3~5mm, the h=3.5mm of the present embodiment.
Sealing element 3 includes sealing substrate 31 and sealing lip 32, and sealing substrate 31 is tubular and outer side surface and socket end b
Inner wall fit, sealing lip 32 from sealing substrate 31 madial wall to the outer wall of plug termination end a extend so that sealing lip 32 surround
And the outer wall of gluing, sealing plug termination end a, and sealing lip 32 is close to the madial wall of the wall surface and sealing substrate 31 of 31 side of sealing substrate
Between angle α be acute angle, the angular range of angle α is preferably 30~60 °, the angle α of this implementations is 45 °.The present embodiment
This kind of sealing structure element is made using flexible material, generally rubber, and the outer wall of plug termination end a is to sealing lip when in use
The extruding force of 32 31 sides of oriented sealing substrate, while sealing lip 32 has restorable trend so that the fitting between them
More closely；In addition, when the fluids such as water or gas flow wherein, there is punching close to the side of sealing substrate 31 for sealing lip 32
It hits, further drives sealing lip 32 to be adjacent to the outer wall of plug termination end a, be further sealed, therefore, this kind of sealing element 3 is being pressed
There can also be good sealing effect after becoming more than 60%, and the sealing element buckling of common tubular is more than 50% in the prior art
After will fail, leak.
First pipe fitting 1 can have multiple plug termination end a, and the second pipe fitting 2 can also have multiple socket end b, and match phase
The sealing element 3 answered.First pipe fitting, 1 both ends of the present embodiment are both provided with plug termination end a, and the second pipe fitting 2 is straight tube-like and second
The both ends of pipe fitting 2 are both provided with socket end b, and sealing element 3 is set to the shape with sealing element 3 positioned at 2 middle part of the second pipe fitting
In the groove that shape matches, sealing element 3 includes sealing substrate 31 and two sealing lips 32 for being set to 31 both ends of sealing substrate.
Each socket end b of second pipe fitting 2 of the present embodiment is both provided with first pipe fitting 1, and two the first pipe fittings 1 is opposite
There is gap d between port, the length of gap d is 2~4mm, the present embodiment d=3mm.The axial length s of sealing lip 32 is opposite
Relationship between 3 axial length L of sealing element is 0.2L≤s ＜ 0.5L, the present embodiment s=0.35L.
When being attached at the scene using this kind of pipe fitting joint structure, it is only necessary to by the flaring of socket end as shown in Figure 4
Portion c is pressed into the shape in the screens portion 11 of suitable limiting section 11 using card pressure tool, and this kind of pipe fitting joint structure
The steel pipe of 100mm bores uses 32,000 Ns of card pressure tools below, and is not influenced on bore after blocking pressure；And the prior art
Due to needing card laminate section to carry out contraction distortion, the steel pipe of 50mm bores just needs 40,000 Ns or more of card to press tool.It will use
The pipe fitting of the pipe fitting joint structure of the present invention carries out pressure test, and test data is as shown in figure 5, the steel pipe pressure resistance using DN65 can
To reach 6MPa, and can pressurize 30min or more.
Claims (9)
1. a kind of pipe fitting joint structure, including it is provided with the first pipe fitting (1) of plug termination end (a)；It is provided with the second of socket end (b)
Pipe fitting (2), the socket end (b) are sheathed on the outside of the plug termination end (a), it is characterised in that：Along the outer of the plug termination end (a)
Peripheral wall is provided with the limiting section (11) of protrusion, and the expansion mouth for allowing the plug termination end (a) to be inserted into is provided on the socket end (b)
(c), it is affixed to fit in formation and the limiting section (11) on the outer surface of the limiting section (11) for expansion mouth (c) deformation
Screens portion (21) is provided with generally tubular flexible between the outer wall of the plug termination end (a) and the inner wall of socket end (b)
Sealing element (3), and the port section for being sheathed on the plug termination end (a) of one end of the sealing element (3), the sealing member
The other end of part (3) extends along the inner wall of socket end (b) away from the direction of the port of the plug termination end (a).
2. pipe fitting joint structure according to claim 1, it is characterised in that：The vertical sectional shape of the limiting section (11) is
The low mountain peak shape in intermediate high both sides.
3. pipe fitting joint structure according to claim 1, it is characterised in that：The sealing element (3) includes sealing substrate
(31) and sealing lip (32), the sealing substrate (31) is that the inner wall of tubular and outer side surface and socket end (b) fits, described
Sealing lip (32) extends from the madial wall of sealing substrate (31) to the outer wall of plug termination end (a) so that the sealing lip (32) surround
And the outer wall of plug termination end (a) described in gluing, sealing, and the sealing lip (32) close to it is described sealing substrate (31) side wall surface with
Angle (α) between the madial wall of the sealing substrate (31) is acute angle.
4. pipe fitting joint structure according to claim 3, it is characterised in that：Second pipe fitting (2) both ends are both provided with
The socket end (b), the sealing element (3) are set to the middle part of second pipe fitting (2), and the sealing element (3) includes
The sealing substrate (31) and two sealing lips (32) for being set to described sealing substrate (31) both ends.
5. pipe fitting joint structure according to claim 4, it is characterised in that：Each socket end of second pipe fitting (2)
(b) it is both provided with first pipe fitting (1), and has gap (d) between the opposite port of two the first pipe fittings (1).
6. pipe fitting joint structure according to claim 5, it is characterised in that：The length of the gap (d) is 2~4mm.
7. pipe fitting joint structure according to claim 4, it is characterised in that:The axial length s of the sealing lip (32)
Relationship between sealing element (3) axial length L is 0.2L≤s ＜ 0.5L.
8. pipe fitting joint structure according to claim 4, it is characterised in that:The angular range of the angle (α) be 30~
60°。
9. according to the pipe fitting joint structure described in claim 1 to 8 any claim, it is characterised in that：The limiting section
(11) it is 3~5mm relative to the height h of the extreme higher position of the periphery wall protrusion of the plug termination end (a).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399801.8A CN108386628B (en) | 2018-04-28 | 2018-04-28 | Pipe fitting connecting structure |
| PCT/CN2018/000241 WO2019204951A1 (en) | 2018-04-28 | 2018-07-04 | Pipe connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399801.8A CN108386628B (en) | 2018-04-28 | 2018-04-28 | Pipe fitting connecting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108386628A true CN108386628A (en) | 2018-08-10 |
| CN108386628B CN108386628B (en) | 2020-01-21 |
Family
ID=63065887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810399801.8A Active CN108386628B (en) | 2018-04-28 | 2018-04-28 | Pipe fitting connecting structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108386628B (en) |
| WO (1) | WO2019204951A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019204951A1 (en) * | 2018-04-28 | 2019-10-31 | 浙江康帕斯流体输送技术有限公司 | Pipe connecting structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120217740A1 (en) * | 2011-02-24 | 2012-08-30 | Fts Co., Ltd. | Connection-structure of a flexible tube |
| CN205716120U (en) * | 2016-04-07 | 2016-11-23 | 大连凯斯博格设备制造有限公司 | A kind of assembling pipe joint with Simple sealing circle |
| GB2539972A (en) * | 2015-07-24 | 2017-01-04 | Hydra-Ring Ltd | A connector |
| CN206145309U (en) * | 2016-10-25 | 2017-05-03 | 安耐特流体输送科技有限公司 | Pipe connection quick -assembly structure |
| CN208107367U (en) * | 2018-04-28 | 2018-11-16 | 浙江康帕斯流体输送技术有限公司 | A kind of pipe fitting joint structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3732882B2 (en) * | 1996-03-21 | 2006-01-11 | カルソニックカンセイ株式会社 | Tube connection structure |
| CN202646962U (en) * | 2012-05-02 | 2013-01-02 | 卜莹 | Ring-pressure strengthening type thin-wall metal pipe connection body |
| CN108386628B (en) * | 2018-04-28 | 2020-01-21 | 浙江康帕斯流体输送技术有限公司 | Pipe fitting connecting structure |
-
2018
- 2018-04-28 CN CN201810399801.8A patent/CN108386628B/en active Active
- 2018-07-04 WO PCT/CN2018/000241 patent/WO2019204951A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120217740A1 (en) * | 2011-02-24 | 2012-08-30 | Fts Co., Ltd. | Connection-structure of a flexible tube |
| GB2539972A (en) * | 2015-07-24 | 2017-01-04 | Hydra-Ring Ltd | A connector |
| CN205716120U (en) * | 2016-04-07 | 2016-11-23 | 大连凯斯博格设备制造有限公司 | A kind of assembling pipe joint with Simple sealing circle |
| CN206145309U (en) * | 2016-10-25 | 2017-05-03 | 安耐特流体输送科技有限公司 | Pipe connection quick -assembly structure |
| CN208107367U (en) * | 2018-04-28 | 2018-11-16 | 浙江康帕斯流体输送技术有限公司 | A kind of pipe fitting joint structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019204951A1 (en) * | 2018-04-28 | 2019-10-31 | 浙江康帕斯流体输送技术有限公司 | Pipe connecting structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108386628B (en) | 2020-01-21 |
| WO2019204951A1 (en) | 2019-10-31 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: A10, Plant 5 #, No. 96, Hibiscus Road, High tech Zone, Ningbo, Zhejiang 315800 Patentee after: ZHEJIANG KANGPASI FLUID TECHNIQUE Co.,Ltd. Address before: 315040 Gate 5, No. 1 Workshop, No. 96, Hibiscus Road, High tech Zone, Ningbo, Zhejiang Patentee before: ZHEJIANG COMPRESSED FLUID TRANSMISSION ENGINEERING Co.,Ltd. |
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| CP03 | Change of name, title or address |