CN109707935A - Metallic conduit connection structure with high-strength anti-corrosion coating - Google Patents
Metallic conduit connection structure with high-strength anti-corrosion coating Download PDFInfo
- Publication number
- CN109707935A CN109707935A CN201711012059.2A CN201711012059A CN109707935A CN 109707935 A CN109707935 A CN 109707935A CN 201711012059 A CN201711012059 A CN 201711012059A CN 109707935 A CN109707935 A CN 109707935A
- Authority
- CN
- China
- Prior art keywords
- pipe fitting
- clasp
- connection structure
- strength anti
- corrosion coating
- 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.)
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- 238000005260 corrosion Methods 0.000 title claims abstract description 64
- 239000011248 coating agent Substances 0.000 title claims abstract description 57
- 238000000576 coating method Methods 0.000 title claims abstract description 57
- 239000002184 metal Substances 0.000 claims abstract description 83
- 229910052751 metal Inorganic materials 0.000 claims abstract description 83
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 239000011159 matrix material Substances 0.000 claims abstract description 16
- 230000007797 corrosion Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000002788 crimping Methods 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
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- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 abstract description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 8
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 229910052725 zinc Inorganic materials 0.000 description 8
- 239000011701 zinc Substances 0.000 description 8
- 229910000975 Carbon steel Inorganic materials 0.000 description 7
- 239000010962 carbon steel Substances 0.000 description 7
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- 239000004698 Polyethylene Substances 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
-
- 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
-
- 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
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/10—Sleeveless joints between two pipes, one being introduced into the other
-
- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The present invention provides a kind of metallic conduit connection structure with high-strength anti-corrosion coating, including clasp pipe fitting, and female end inner peripheral surface is equipped with seal groove and annular groove；Sealing ring is arranged in the seal groove；And metal clasp, it is in tool ring-type jaggy, it is arranged in annular groove and is convenient for compressive deformation, wherein the clasp pipe fitting is formed by the high-strength anti-corrosion coating of metal tube matrix and covering pipe fitting matrix inner wall, when metal tube is inserted into the bellmouth of clasp pipe fitting in place, the seal groove of clasp pipe fitting is compressed using crimping tool and annular groove is allowed to deform, to realize the sealed connection between metal tube clasp pipe fitting.Since pipe fitting matrix inner wall has high-strength anti-corrosion coating, the connecting pipe itself in connection structure can have relatively thin wall thickness, good intensity, while have more preferably corrosion resistance.Therefore, common metal material can be used and realize good crimping deformation performance, therefore improve sealing performance, reduce material cost.
Description
Technical field
The present invention relates to metallic conduit connection structures, more particularly to the metallic conduit snap ring-type with high-strength anti-corrosion coating
Connection structure.
Background technique
In building field and industrial circle, fluid-transporting tubing is often used.Traditional fluid-transporting tubing is by pipe fitting
It is formed by connecting, threaded connection is generallyd use between pipe fitting, to form various pipe-line systems.A kind of pipe fitting as maturation connects
Mode is connect, the installation effectiveness of threaded connection is not high, and has certain requirement to working space, also to solve to prevent junction from leaking
A series of problems, such as.
For this purpose, gradually developing card lifting pressing type metal pipe fitting connection structure in recent years.It uses thin metallic tubd to design, and utilizes
Specific purpose tool crimping deforms thin-walled, so that pipe fitting connection moment be made to complete.As shown in Figure 1A, in cartridge connection cross-sectional view,
Crimping tool for being crimped simultaneously at socket section M and seal groove N two, compressed by sealing groove location, is forced O-shaped in slot
Sealing ring is close to connected metal tube (such as steel pipe), plays the role of hermetic seal, socket section M is by hexagonal card pressure, gold
Belong to pipe and pipe fitting is squeezed and deformed, using the rigidity of metal material itself, plays the role of anti-pulling.
This structure construction is simple, and the operating time is short, the non-threaded connection of connector, the mantle fiber operation of no complexity, and no high temperature is bright
Fire, front and back processing when welding, oily pollution or welding slag pollution when no construction cutting or linking.
As a kind of compression joint type pipe fitting, the wall thickness of clamp-press type metal tube must be relatively thin, sufficiently becomes when to meet crimping
The requirement of shape, while helping to mitigate product weight.A part as fluid-transporting tubing simultaneously, must have enough
Intensity.Thicken wall thickness facilitates to improve intensity certainly, but can reduce the formation of fully deformed, and increase product weight.And it is excessive
Pursuing thin-walled then will lead to intensity deficiency.In addition, it is desirable to meet the requirement of fluid-resistant corrosion.It there are certain requirements to corrosion resistance
Pipe-line system (for example, in fire-fighting spraying pipeline system of building) in, can use stainless steel pipe or copper pipe fitting, but
This also results in the raising of material cost.
Compared with the pipe fitting as connector, the material utilization amount of the pipeline connected is bigger, using stainless steel tube or copper
Pipe will lead to even more serious increased costs.
However, it is very big to use the pipeline of zinc-plated carbon steel pipe to have the defects that in clamp-press type metal tube connection structure.Figure
1B shows the enlarged drawing of the position B of the clamp-press type metal tube connection structure of Figure 1A.As shown in Figure 1B, due to clamp-press type pipe
91 socket section M is caused the outer wall of zinc-plated carbon steel pipe 92 by hexagonal card pressure, zinc-plated carbon steel pipe 92 and the deformation of pipe fitting friction and Extrusion
It is destroyed with the zinc coat of the inner wall of clamp-press type pipe 91, and the water flow F in pipeline is flowed by being intubated in gap, hexagonal of going directly is squeezed
Compressive strain position, the zinc coat of the inner wall of zinc-plated carbon steel pipe 62 and clamp-press type pipe 91 has been destroyed at this time, carbon steel pipe and pipe
Part is etched oxidation under the action of water flow, so that the service life of pipeline will have a greatly reduced quality.
In addition, insertion end is easy to cause rubber seal during metal tube is inserted into clamp-press type metal tube
Damage or displacement, are caused poorly sealed.
Being disclosed in the information of background parts of the present invention, it is only intended to increase understanding of the overall background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The object of the present invention is to provide a kind of metallic conduit connection structures with high-strength anti-corrosion coating, can make to connect
Connecting pipe itself in binding structure has relatively thin wall thickness, good intensity, to have good crimping deformation performance, together
When there is more preferably corrosion resistance.
It is also another object of the present invention to provide a kind of metallic conduit connection structure with high-strength anti-corrosion coating, energy
Enough solves the problems, such as the zinc-plated carbon steel pipe connected because zinc coat damage caused by corrosion resistance reduction.
A further object of the present invention is to provide a kind of metallic conduit connection structure with high-strength anti-corrosion coating, energy
Enough prevent damage during metal tube is inserted into connection structure for sealing ring.
The present invention provides a kind of metallic conduit connection structure with high-strength anti-corrosion coating comprising clasp pipe fitting,
Its female end inner peripheral surface is equipped with seal groove and annular groove；Sealing ring is arranged in the seal groove；And metal clasp,
It is in having ring-type jaggy, to be arranged in annular groove and be convenient for compressive deformation, wherein the clasp pipe fitting is by metal
The high-strength anti-corrosion coating of at least inner wall of pipe fitting matrix and covering pipe fitting matrix is formed, when metal tube insertion clasp pipe fitting
Bellmouth in place when, using crimping tool compress clasp pipe fitting seal groove and annular groove be allowed to deform, to pass through metal card
The tightening deformation of ring makes metal tube corresponding deformation, realizes that the sealing between metal tube clasp pipe fitting connects from there through sealing ring
It connects.
In the above-mentioned metallic conduit connection structure with high-strength anti-corrosion coating, it is preferable that the corrosion-inhibiting coating is by gathering
Vinyl material is formed.
In the above-mentioned metallic conduit connection structure with high-strength anti-corrosion coating, it is preferable that the metal tube matrix
For thin-wall steel tube.
In the above-mentioned metallic conduit connection structure with high-strength anti-corrosion coating, it is preferable that the annular groove is located at institute
State the axially external of seal groove.
In the above-mentioned metallic conduit connection structure with high-strength anti-corrosion coating, it is preferable that further include being arranged in snap ring
Guide collar in slot and between sealing ring and metal clasp, the internal diameter of the guide collar are less than the internal diameter of sealing ring and are greater than
The outer diameter of metal tube.It is further preferred that the guide collar is made of engineering plastics.
In the above-mentioned metallic conduit connection structure with high-strength anti-corrosion coating, it is preferable that the metal clasp it is interior
Perimeter surface has dentalation.
In the above-mentioned metallic conduit connection structure with high-strength anti-corrosion coating, it is preferable that the metal clasp it is interior
The tapered face of perimeter surface.
In the above-mentioned metallic conduit connection structure with high-strength anti-corrosion coating, it is preferable that the sealing ring it is transversal
The width in face is greater than height.It is further preferred that the non-circular cross-section of the cross section of the sealing ring.
In the above-mentioned metallic conduit connection structure with high-strength anti-corrosion coating, it is preferable that further include being arranged in snap ring
Axially outermost cutoff collar in the bellmouth of formula pipe fitting.
In the above-mentioned metallic conduit connection structure with high-strength anti-corrosion coating, since pipe fitting matrix inner wall is with high-strength
Corrosion-inhibiting coating is spent, so that the connecting pipe itself in connection structure has relatively thin wall thickness, good intensity, thus is had good
Crimping deformation performance, while there is more preferably corrosion resistance.It is therefore possible to use common metal material realizes good pressure
Deformation performance is connect, therefore improves sealing performance, reduces material cost, and reduce product weight.
In the above-mentioned metallic conduit connection structure with high-strength anti-corrosion coating, by using appropriate seal groove and card
Annular groove setting sequence makes it possible to reach zinc coat in the fluid penetrated between clasp pipe fitting and the metal tube of insertion impaired
Just stopped by sealing ring before place, because without corroding caused by metal tube, to improve the service life of entire connection structure.
In addition, the present invention can prevent right during metal tube is inserted into connection structure by the setting of guide collar
In the damage of sealing ring.
Methods and apparatus of the present invention has additional features and advantages, these characteristics and advantages are attached from what is be incorporated herein
It will be apparent in figure and subsequent specific embodiment, or will be in the attached drawing being incorporated herein and subsequent specific reality
It applies in mode and is stated in detail, the drawings and the detailed description together serve to explain specific principles of the invention.
Detailed description of the invention
Figure 1A is the schematic diagram of clamp-press type metal tube connection structure in the prior art.
Figure 1B shows the enlarged drawing of the position B of the clamp-press type metal tube connection structure of Figure 1A.
Fig. 2 is that the clasp pipe fitting construction of the metallic conduit connection structure with high-strength anti-corrosion coating of the invention is half-sectional
Schematic diagram.
Fig. 3 is the half-section diagram of the metallic conduit connection structure with high-strength anti-corrosion coating of the invention, wherein blocking
The inside of ring type pipe fitting has been mounted with sealing ring, guide collar, metal clasp, cutoff collar, is filled but without with metal tube
Match.
Fig. 4 is the cut-away view of the metallic conduit connection structure with high-strength anti-corrosion coating of the invention, wherein snap ring-type
The inside of pipe fitting has been mounted with sealing ring, guide collar, metal clasp, cutoff collar, and inserts metal tube, and is crimped
Assembly.
Fig. 5 shows the enlarged drawing of the position A of the metal tube connection structure with high-strength anti-corrosion coating of Fig. 4.
Fig. 6 shows circular ring type snap ring of the invention, and wherein right part of flg is the cross-sectional view of left hand view.
Fig. 7 shows ring gear formula snap ring of the invention, and wherein right part of flg is the cross-sectional view of left hand view.
It is to be appreciated that attached drawing is not necessarily drawn to scale, it illustrates in a way by the sheet that simplifies
Each feature of the basic principle of invention.Specific design feature of the invention disclosed herein, including for example specific ruler
Very little, orientation, positioning and shape, will partly be determined by the application of specific purpose and use environment.
In the drawings, in several figures through attached drawing, appended drawing reference refers to of the invention identical or equivalent
Part.
Specific embodiment
It specific reference will be made to each embodiment of the invention now, show these implementations in the drawings and the following description
The example of example.Although the present invention is combined with exemplary embodiment and is described, it will be understood that this specification is not intended to
Limit the invention to those exemplary embodiments.On the contrary, the present invention is directed to not only cover these exemplary embodiments, and cover
Lid can be included in it is within the spirit and scope of the present invention being defined by the appended claims it is various replacement, modification, etc.
Effect form and other embodiments.
Fig. 2 is that the clasp pipe fitting construction of the metallic conduit connection structure with high-strength anti-corrosion coating of the invention is half-sectional
Schematic diagram.As shown in Fig. 2, the clasp pipe fitting 1 of the metallic conduit connection structure with high-strength anti-corrosion coating of the invention by
The formation of high-strength anti-corrosion coating 102 of at least inner wall of metal tube matrix 101 and covering pipe fitting matrix.It should be noted that
High-strength anti-corrosion coating 102 can only cover the inner wall of metal tube matrix 101, to provide for the anticorrosive of institute's trandfer fluid
Effect.Certainly, high-strength anti-corrosion coating 102 can also be comprehensive anticorrosive to provide with all surfaces of metal tube matrix 101
Effect.
High-strength anti-corrosion coating 102 can be formed by material appropriate, for example, high-strength polyethylene.It can use any
Suitable technique forms high-strength anti-corrosion coating 102 on metal tube matrix 101.
Due to the presence of high-strength anti-corrosion coating 102, metal tube matrix 101 can use any suitable metal material
Material, such as ordinary carbon steel the problem of without taking corrosion resistance into account, therefore help to reduce material cost.
High-strength anti-corrosion coating 102 itself intensity and density with higher, and easily against distinctive in metal material
Microdefect, such as sand holes, crackle etc., therefore wall thickness can be made very thin.Therefore the deformation performance of pipe fitting is helped to improve,
To improve the quality for compressing sealing.And help to reduce product weight.
As shown in Fig. 2, one end of clasp pipe fitting 1 has bellmouth, to be inserted into wanted metal tube.Card shown in Fig. 2
The bellmouth of ring type pipe fitting 1 is successively arranged seal groove 2 and annular groove 3 from inside to outside.As preferred embodiment, this set is suitable
Sequence helps to prevent the corrosion of connected coating steel pipe (this is described later).
The internal diameter of seal groove 2 and annular groove 3 is greater than the internal diameter of 1 other parts of clasp pipe fitting, to accommodate rubber seal
Circle and metal clasp.Clasp pipe fitting 1 shown in figure is integrally formed.
Fig. 3 is the half-section diagram of the metallic conduit connection structure with high-strength anti-corrosion coating of the invention.Such as Fig. 3 institute
Show, has been mounted with sealing ring 4, guide collar 5, metal clasp 6 and cutoff collar in the seal groove 2 and annular groove 3 of clasp pipe fitting 1
8, it is assembled but without with metal tube.
Here, guide collar 5 is not required.Guide collar 5 in a ring, internal diameter be less than sealing ring 4 internal diameter and be greater than to
The outer diameter of the metal tube 7 of insertion.
Fig. 4 is the cut-away view of the metallic conduit connection structure with high-strength anti-corrosion coating of the invention.Fig. 5 shows figure
The enlarged drawing of the position A of the 4 metal tube connection structure with high-strength anti-corrosion coating.As shown in Figure 4, Figure 5, snap ring-type pipe
It has been mounted with sealing ring 4, guide collar 5, metal clasp 6 and cutoff collar 8 in the seal groove 2 and annular groove 3 of part 1, and has been inserted into
Metal tube 7, and carried out crimping assembly.
Here, guide collar 5 is not required.But there is 7 centering of metal tube for facilitating guidance insertion in guide collar 5, avoid
Damage or mobile sealing ring 4, to better ensure that the effect of sealing.For this purpose, the internal diameter of guide collar 5 is less than the interior of sealing ring 4
Diameter and be greater than metal tube 7 outer diameter, be achieved in for metal tube 7 be inserted into guiding function.
Guide collar 5 can be made of any suitable plastic material, as long as can satisfy strength and toughness and corrosion-resistant requirement,
And enough deformations are generated when being pressurized without being destroyed.It is preferred that using engineering plastics, such as polyethylene etc..
As a preferred embodiment, cutoff collar 8 nor is it necessary that.Cutoff collar 8 in a ring, is arranged in clasp pipe fitting
It is the axially outermost in 1 bellmouth, thus can prevent external moisture from penetrating into clasp pipe fitting 1 and causing to corrode.?
When clasp pipe fitting 1 is compacted, cutoff collar 8 from it is axially external realization clasp pipe fitting 1 and metal tube 7 between sealing.
Cutoff collar 8 can be made of any suitable material, if it can satisfy strength and toughness and corrosion-resistant requirement, and
Enough deformations are generated when compression without being destroyed.It is preferred that using engineering plastics, such as polyethylene etc..
And it should be noted that sealing ring shown in figure 4, guide collar 5, the arrangement of metal clasp 6 and cutoff collar 8 are suitable
Sequence is only a kind of preferred implementations.The basic role of guide collar 5 is that 7 centering of metal tube insertion is guided to avoid damage to or move
Dynamic seal ring 4, the basic role of cutoff collar 8 are that the moisture for preventing outside penetrates into clasp pipe fitting 1 and causes to corrode,
Under the premise of meeting seal request, other arrangement modes are also possible.No matter for example, the setting sequence of other associated components
How, make guide collar 5 in the axially external setting of the bellmouth inner close fitting sealing ring 4 of clasp pipe fitting 1.In another example no matter other
How is the setting sequence of associated components, and cutoff collar 8 is arranged the axially outermost in the bellmouth of clasp pipe fitting 1.
Sealing ring 4 preferably uses more flat structure, that is, width is greater than the cross section of height, to increase and institute's seal pipe
Contact area between part, to improve sealing effect.For example, rectangular cross section or oval cross section section or other are suitable
Close the cross section of shape.
Metal clasp 6 is in having ring-type jaggy, so that when being radially compressed, internal diameter reduces.Metal clasp 6 can be with
Using various forms.As an example, Fig. 6 shows a kind of circular ring type snap ring.
Fig. 7 shows a kind of ring gear formula snap ring 6, internal to have circumferentially distributed dentalation.This dentalation
Help to be embedded into when by radial compaction and be inserted into metal tube, to improve anti-drawing strength.
The right part of flg of Fig. 7 is the cross-sectional view of left hand view.The right part of flg of Fig. 7 shows that the inner peripheral surface of metal clasp 6 is tapered
Face.Certainly, this is only a kind of exemplary cross section, can also use rectangular cross section as shown in FIG. 6.When by radial pressure
When tight, the metal tube of this cone structure and compressive deformation provides axial compressive force with credit union, so that it is close further to compress rubber
Seal thus provides better seal effect.
Equally, the inner peripheral surface structure of the tapered surface of metal clasp 6 shown in the right part of flg of Fig. 7 can be equally used for Fig. 6 institute
The circular ring type snap ring shown.
Metallic conduit connection structure shown in Fig. 4 with high-strength anti-corrosion coating is assembled in this way.First by metal
Pipe 7 is inserted into the clasp pipe fitting 1 shown in Fig. 3 for being mounted with sealing ring 4, guide collar 5, metal clasp 6 and cutoff collar 8
It is in place in bellmouth, then to the seal groove 2 and the progress of annular groove 3 on clasp pipe fitting 1 while rule are compressed to using compaction tool
Scale cun.At this point, seal groove 2 is forced internal sealing ring 4 to be close to metal tube 8 by circumferential compression forms one of face sealing, resistance
The only fluid leakage in pipeline, meets seal request.Annular groove 3 is forced internal metal clasp 6 tight by circumferential compression simultaneously
Compact imbeding metal tube 7 forms the compression groove of a circle insertion metal tube, meets pipeline anti-pull-out property.When being equipped with guide collar 5, lead
It also while is circumferentially inwardly compressed to circle 5, so that it is close to the outer surface of metal tube 7 and the inner surface of clasp pipe fitting 1,
Form further sealing.When being equipped with cutoff collar 8, cutoff collar 8 also while is circumferentially inwardly compressed, to be close to gold
Belong to the outer surface of pipe 7 and the inner surface of clasp pipe fitting 1, forms further sealing.
Test data shows that the tension pull out force of the snap ring-type connection of equivalent specifications is the 2.2 of cartridge connection tension pull out force
Times or more, improved strengthened snap ring-type connection tension pull out force is 4 times or more of equivalent specifications cartridge connection tension pull out force.
Metallic conduit connection structure it can be seen from Fig. 4 with high-strength anti-corrosion coating is only on clasp pipe fitting 1
Seal groove 2 and annular groove 3 (in the same area) by compress deform, other positions will not deform.
Although metal clasp 6 is tightly embedded in the zinc coat that metal tube 7 causes coating steel pipe outer wall it can be seen from Fig. 5
Be destroyed, but penetrate into clasp pipe fitting 1 and insertion metal tube 7 between water flow reach zinc coat be damaged place before just
Stopped by sealing ring 4, because without corroding caused by metal tube 7.It is also shown in Fig. 5, although metal clasp 6 is tightly embedded in gold
Belonging to pipe 7 causes the zinc coat of coating steel pipe outer wall to be destroyed, but the axial direction due to cutoff collar 8 in the bellmouth of clasp pipe fitting 1
Outermost forms sealing, and external moisture does not penetrate into the inside of clasp pipe fitting 1, thus will not cause to metal tube 7
Corrosion.In other words, structure of the invention makes connected coating steel pipe not lead to service life because of the destruction of zinc coat
It reduces.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to the exhaustive present invention, or limits the invention to disclosed precise forms, and it will be apparent that according to the above instruction,
Many changes and variations can be made.The purpose of selecting and describing the exemplary embodiment is that explaining of the invention specific
Principle and its practical application, so that others skilled in the art can be realized and utilize of the invention a variety of different
Exemplary implementation scheme and various chooses and changes.The scope of the present invention be intended to by appended claims and its
Equivalent form is limited.
Claims (10)
1. a kind of metallic conduit connection structure with high-strength anti-corrosion coating characterized by comprising
Clasp pipe fitting (1), female end inner peripheral surface are equipped with seal groove (2) and annular groove (3)；
Sealing ring (4) is arranged in the seal groove (2)；And
Metal clasp (6), in tool ring-type jaggy, so that it is arranged in annular groove (3) and is convenient for compressive deformation,
Wherein the clasp pipe fitting (1) by metal tube matrix (101) and cover pipe fitting matrix at least inner wall high intensity
Corrosion-inhibiting coating (102) formation,
When metal tube (7) are inserted into the bellmouth of clasp pipe fitting in place, crimping tool is utilized to compress the sealing of clasp pipe fitting (1)
Slot (2) and annular groove (3) are allowed to deform, so that the tightening deformation by metal clasp makes metal tube (7) corresponding deformation, thus lead to
Cross the sealed connection between sealing ring (4) realization metal tube (7) clasp pipe fitting (1).
2. the metallic conduit connection structure according to claim 1 with high-strength anti-corrosion coating, which is characterized in that described
Corrosion-inhibiting coating (102) is formed by polythene material.
3. the metallic conduit connection structure according to claim 1 with high-strength anti-corrosion coating, which is characterized in that described
Metal tube matrix (101) is thin-wall steel tube.
4. the metallic conduit connection structure according to claim 1 with high-strength anti-corrosion coating, which is characterized in that described
Annular groove (3) is located at the axially external of the seal groove (2).
5. the metallic conduit connection structure according to claim 1 with high-strength anti-corrosion coating, which is characterized in that also wrap
Setting is included in the guide collar (5) in annular groove (3) and between sealing ring (4) and metal clasp (6), the guide collar it is interior
Diameter is less than the internal diameter of sealing ring and is greater than the outer diameter of metal tube (7).
6. the metallic conduit connection structure according to claim 5 with high-strength anti-corrosion coating, which is characterized in that described
Guide collar is made of engineering plastics.
7. the metallic conduit connection structure according to claim 1 with high-strength anti-corrosion coating, which is characterized in that described
The inner peripheral surface of metal clasp has dentalation.
8. the metallic conduit connection structure according to claim 1 with high-strength anti-corrosion coating, which is characterized in that described
The tapered face of the inner peripheral surface of metal clasp.
9. the metallic conduit connection structure according to claim 1 with high-strength anti-corrosion coating, which is characterized in that described
The width of the cross section of sealing ring (4) is greater than height.
10. the metallic conduit connection structure according to claim 8 with high-strength anti-corrosion coating, which is characterized in that also
Including the axially outermost cutoff collar (8) being arranged in the bellmouth of metal card ring type pipe fitting (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711012059.2A CN109707935A (en) | 2017-10-26 | 2017-10-26 | Metallic conduit connection structure with high-strength anti-corrosion coating |
| PCT/CN2018/111857 WO2019080896A1 (en) | 2017-10-26 | 2018-10-25 | Metal pipe connecting structure having high-strength anti-corrosion coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711012059.2A CN109707935A (en) | 2017-10-26 | 2017-10-26 | Metallic conduit connection structure with high-strength anti-corrosion coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109707935A true CN109707935A (en) | 2019-05-03 |
Family
ID=66246785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711012059.2A Pending CN109707935A (en) | 2017-10-26 | 2017-10-26 | Metallic conduit connection structure with high-strength anti-corrosion coating |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109707935A (en) |
| WO (1) | WO2019080896A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178309A (en) * | 2020-10-20 | 2021-01-05 | 国琳(天津)科技有限公司 | Thick wall clamping and pressing type pipe fitting |
| CN113898796A (en) * | 2021-11-10 | 2022-01-07 | 北京中捷北方管道设备有限公司 | Thick wall clamp pressing type pipe fitting crimping self-corrosion prevention device |
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| CN201621393U (en) * | 2010-01-21 | 2010-11-03 | 河南康泰塑业科技有限公司 | Ring pressure reinforced thin-wall metal pipe fitting |
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| CN2185359Y (en) * | 1994-03-29 | 1994-12-14 | 中国石油天然气总公司工程技术研究所 | Spigot-and-socket jointed internal corrosion-proof steel pipe parts and joints thereof |
| JP2002327876A (en) * | 2001-03-01 | 2002-11-15 | Kitz Corp | Joining structure for coupling and valve and thin pipe coupling |
| CN2881274Y (en) * | 2005-12-27 | 2007-03-21 | 台州市九洲软管有限公司 | Connector for pipe |
| AU2007201605A1 (en) * | 2006-04-12 | 2007-11-01 | Orrcon Operations Pty Ltd | Pipe and pipe joining method |
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| KR200451155Y1 (en) * | 2010-05-19 | 2010-11-30 | 장갑식 | Hose coupling of connection structure for water supply, heating |
| CN205136880U (en) * | 2015-11-06 | 2016-04-06 | 苏光彬 | Metal pipeline snap ring formula connection structure |
| CN206191111U (en) * | 2016-11-10 | 2017-05-24 | 戴璨遥 | Pipeline latch fitting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178309A (en) * | 2020-10-20 | 2021-01-05 | 国琳(天津)科技有限公司 | Thick wall clamping and pressing type pipe fitting |
| CN113898796A (en) * | 2021-11-10 | 2022-01-07 | 北京中捷北方管道设备有限公司 | Thick wall clamp pressing type pipe fitting crimping self-corrosion prevention device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019080896A1 (en) | 2019-05-02 |
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