CN107781541B - A kind of tube assembly - Google Patents
A kind of tube assembly Download PDFInfo
- Publication number
- CN107781541B CN107781541B CN201610727277.3A CN201610727277A CN107781541B CN 107781541 B CN107781541 B CN 107781541B CN 201610727277 A CN201610727277 A CN 201610727277A CN 107781541 B CN107781541 B CN 107781541B
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- copper
- tube
- section
- steel
- bending segment
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- 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
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of interface structure of multiple tube and tube assemblies, multiple tube includes steel tube body, and steel tube body at least inner surface is provided with layers of copper, it is characterised in that, the end of interface structure successively includes bending segment and cooperation section from the outside to the core, and the internal diameter of bending segment is greater than the internal diameter of cooperation section；Multiple tube herein is when carrying out assemble welding with copper pipe, the cooperative end part of copper pipe is set in the cooperation section of interface structure, solder can be filled between bending segment inner surface and the outer surface of copper pipe, in this way it is possible to prevente effectively from solder is contacted with compound end surfaces, to avoid the P elements in solder from contacting with steel tube body, it eliminates P elements in the prior art and incorporates and distortion of lattice phenomenon occurs inside Steel material, the toughness and plasticity after improving composite tube welding, and then improve the service performance of product；Also, weld seam is formed between layers of copper and copper pipe, and mobile performance is not influenced by steel material when solder melts, and help to obtain preferable mobility, guarantees appearance of weld quality.
Description
Technical field
The present invention relates to welding technology field, in particular to the interface structure and tube assembly of a kind of multiple tube.
Background technique
In the prior art, for the typically copper of refrigeration system pipeline part, because copper material is with good resistance to
Corrosivity and machinability, but the price of copper pipe is relatively high, more using copper pipe, product processing cost is higher.Therefore copper pipe with
Mouthpiece between copper pipe generallys use Copper steel cladding pipe.
Referring to FIG. 1, Fig. 1 is assembling schematic diagram when prior art copper pipe and Copper steel cladding pipe weld.
In the prior art Copper steel cladding pipe 1 ' mainly include steel main pipe and be set to steel supervisor external surface or/
The layers of copper of inner surface.The inner and outer circumferential surfaces of the steel main pipe of Copper steel cladding pipe 1 ' are provided with layers of copper, the welding of copper pipe 2 ' in Fig. 1
It is internal that pipeline section is inserted into Copper steel cladding pipe 1 '.In general, Copper steel cladding pipe 1 ' is connected and fixed usually using welding manner with copper pipe 2 ', weld
When connecing, copper pipe 2 ' is socketed on that Copper steel cladding pipe 1 ' is internal or Copper steel cladding pipe 1 ' to be socketed on copper pipe 2 ' internal, using silver soldering or
The weldering of person's phosphor-copper welds the two to save welding cost, it is preferable to use phosphor-copper welds.
Referring to FIG. 2, Fig. 2 is partial enlarged view at A in Fig. 1.
Solder a portion spreads over the end face 11 ' of Copper steel cladding pipe 1 ', and another part is filled in copper pipe and copper steel is multiple
Between conjunction 1 ' socket part of pipe point.After Copper steel cladding pipe 1 ' and copper pipe are welded using phosphor-copper, the intensity of 1 ' welding section of Copper steel cladding pipe
It is fairly obvious with hardness increase, cause its toughness and plasticity to be remarkably decreased, seriously affects the service performance of product.Especially freezing
Low-temperature working area in system, this phenomenon is even more serious, or even cold short phenomenon occurs.
Therefore, the Copper steel cladding pipe welding section degradation using phosphor-copper postwelding how is avoided, eliminates cold short phenomenon, in turn
The service performance for improving refrigeration system, is those skilled in that art's technical problem urgently to be resolved.
Summary of the invention
In order to solve the above technical problems, the multiple tube includes steel the present invention provides a kind of interface structure of multiple tube
Matter tube body, the steel tube body at least inner surface are provided with layers of copper, and the end of the interface structure successively includes curved from the outside to the core
Trisection and cooperation section, the internal diameter of the bending segment are greater than the internal diameter of the cooperation section.
Multiple tube herein is when carrying out assemble welding with copper pipe (or other materials pipe fitting to be welded), the abutting end of copper pipe
Portion is set in the cooperation section of the interface structure of multiple tube, solder can be filled in bending segment inner surface and copper pipe outer surface it
Between, in this way it is possible to prevente effectively from solder is contacted with compound end surfaces, so that the P elements in solder is avoided to contact with steel tube body,
The Steel material of P elements and multiple tube i.e. in solder is effectively isolated, and is eliminated P elements in the prior art and is incorporated inside Steel material
Distortion of lattice phenomenon occurs, the toughness and plasticity after improving composite tube welding, and then improve the service performance of product.
Also, weld seam is formed between layers of copper and copper pipe, and mobile performance is not influenced by steel material when solder melts, and is had
Conducive to preferable mobility is obtained, guarantee appearance of weld quality.
Optionally, the interface structure specifically includes main paragraph and flared section, and the flared section is set to the main paragraph
End, the bending segment and the cooperation section are set to the flared section.
Optionally, the interface structure further includes the taper connection section that internal diameter is tapered from the outside to the core, and the main paragraph passes through
The taper connection section connects the flared section.
Optionally, the inclination angle range of the bending section and vertical direction are as follows: be greater than zero degree and be less than or equal to 360 degree, and institute
The length for stating bending segment is more than or equal to the thickness of multiple tube.
Optionally, the bending segment is straightway, surrounds the bell mouth shape extended out.
In addition, multiple tube and pipe fitting to be welded including welded connecting are described compound the present invention also provides a kind of tube assembly
Pipe has interface structure described in any of the above embodiments, and the end sleeve of the pipe fitting to be welded is loaded on the interface structure of the multiple tube,
And cooperate with the cooperation section, part weld seam is formed between the inside of the bending segment and the outer surface of pipe fittings to be welded.
In addition, the present invention also provides a kind of interface structure of multiple tube, including steel tube body, the steel tube body is at least
Outer surface is provided with layers of copper, and the end of the interface structure successively includes bending segment and cooperation section, the bending segment from the outside to the core
Internal diameter be less than it is described cooperation section internal diameter.
Optionally, the steel tube body radially includes at least one layer, each layer be steel and other metals alloy-layer or
Steel layer.
In addition, the present invention also provides a kind of tube assembly, multiple tube and copper pipe including welded connecting, the multiple tube tool
Have an interface structure described in any of the above embodiments, the interface structure is set in the inside of the copper pipe, and the cooperation section with
The copper pipe cooperation, part weld seam are formed between the outside of the bending segment and the copper pipe inner surface.
Multiple tube in the present embodiment when carrying out assemble welding with copper pipe (or other materials pipe fitting to be welded), multiple tube
The cooperation section of interface structure is set in the cooperative end part of copper pipe, and solder is between the cooperation section and copper pipe outer surfaces of multiple tube
Gap is inwardly flowed, and because compound pipe end has the bending segment to bend inwards, it is close that such fusion welding only flows to bending segment
The surface for cooperating section, effectively avoids solder from contacting with compound end surfaces, so that P elements and steel tube body in solder be avoided to connect
Touching, the i.e. Steel material of P elements in solder and multiple tube are effectively isolated, and are eliminated P elements in the prior art and are incorporated Steel material
Distortion of lattice phenomenon occurs for inside, the toughness and plasticity after improving composite tube welding, and then improves the service performance of product.
Because tube assembly herein has above-mentioned interface structure, therefore tube assembly herein also has the above-mentioned of interface structure
Technical effect.
Detailed description of the invention
Fig. 1 is assembling schematic diagram when prior art copper pipe and Copper steel cladding pipe weld；
Fig. 2 is partial enlarged view at A in Fig. 1；
Fig. 3 is the assembling schematic diagram of multiple tube and pipe fitting to be welded in the first embodiment of the invention；
Fig. 4 is partial enlarged view at E in Fig. 3；
Fig. 5 is the structural schematic diagram of multiple tube in second of embodiment of the invention；
Fig. 6 is the assembling schematic diagram of multiple tube and pipe fitting to be welded shown in Fig. 5；
Fig. 7 is the structural schematic diagram of multiple tube in the third embodiment of the invention；
Fig. 8 is the assembling schematic diagram of multiple tube and pipe fitting to be welded shown in Fig. 7.
Wherein, Fig. 1 is into Fig. 2:
Copper steel cladding pipe 1 ', end face 11 ', copper pipe 2 '.
Wherein, Fig. 3 is into Fig. 8:
Multiple tube 1, end face 1a, bending segment 11, cooperation section 12, layers of copper 13, steel tube body 14, layers of copper 15, layers of copper 16, main body
Section 101 and flared section 100；
Copper pipe 2.
Specific embodiment
For the phosphor-copper postwelding Copper steel cladding pipe welding section degradation technical problem being previously mentioned in background technique, herein into
Gone further investigation, after research finds Copper steel cladding pipe and copper pipe welding, solder is distributed mainly on two regions: copper pipe outer with
The compound end surfaces of steel copper (area Tu2Zhong A) and copper pipe outer and Copper steel cladding inside pipe wall void space and copper steel root (B in Fig. 2
Area).Phos copper is contacted with layers of copper, steel main pipe simultaneously on the compound end surfaces of steel copper, and wherein phos copper is in steel
Material surface mobility is poor, and weld seam forms relatively difficult, causes Copper steel cladding end surfaces weld seam existing defects in the area A.Together
When be passed through inside steel in welding position as solute because of the P elements in solder, cause steel main pipe end distortion of lattice, increase
The resistance of big shearing movement, makes sliding be difficult to carry out, so that the intensity of Copper steel cladding pipe and hardness be made to increase, toughness and plasticity are aobvious
Decline is write, the service performance of product is affected.
On the basis of the above research discovery, further explores herein, then propose a kind of solution above-mentioned technical problem
Technical solution, be described in detail below.
It is with reference to the accompanying drawing and specific real in order to make those skilled in the art more fully understand technical solution of the present invention
Applying example, the present invention is described in further detail.
Fig. 3 and Fig. 4 are please referred to, Fig. 3 is the assembling schematic diagram of multiple tube and pipe fitting to be welded in the first embodiment of the invention；
Fig. 4 is partial enlarged view at E in Fig. 3.
The present invention provides a kind of interface structures of multiple tube, as shown in figure 3, the multiple tube includes steel tube body 14 and copper
Layer.Steel tube body 14 described herein refers to that the alloy containing composition of steel or simple substance steel, alloy can be copper steel alloy,
It can be the alloy of other metals and steel.Preferred copper steel alloy herein, i.e. steel tube body 14 may include one layer or several layers of, often
One layer can be copper steel alloy-layer or steel layer.
There is shown herein the structure of several common steel tube bodies 14, steel tube body is radially from extroversion in the first structure
It inside may include: copper steel alloy-layer, steel layer, copper steel alloy-layer.Steel tube body is radially from outside to inside can be in second of structure
It include: copper steel alloy-layer, steel layer.Steel tube body radially from may include: steel layer, copper steel alloy outside to inside in the third structure
Layer.
It should be noted that the above-mentioned direction definition by tube hub axis be it is interior, correspondingly, be far from the direction of tube hub axis
Outside.
In a specific embodiment, at least inner surface of steel tube body 14 is provided with layers of copper 13, that is to say, that steel tube
Layers of copper 15 has can be set in the outer surface of body 14, can also be not provided with layers of copper.13 main function of layers of copper is to play in welding
The effects of effect and anticorrosion of isolation steel tube body 14 and solder.Solder used when welding is phos copper herein.
The end of the interface structure of multiple tube herein successively includes bending segment 11 and cooperation section 12, cooperation from the outside to the core
Section 12 is mainly used for being coupled with pipe fitting 2 to be welded, cooperates and forms solder accommodation space between section 12 and pipe fitting to be welded 2 to be formed
Weld seam c.The internal diameter of bending segment 11 herein is greater than the internal diameter of cooperation section 12, that is to say, that bending segment 11 turns down outward
Structure, wherein the length of bending segment 11 can be arranged according to specific environment.Continue to introduce technology so that pipe fitting to be welded is copper pipe as an example
Scheme and technical effect.
Multiple tube 1 herein when carrying out assemble welding with copper pipe 2 (or other materials pipe fitting to be welded), is matched by copper pipe 2
The cooperation section 12 of interface structure of the end sleeve loaded on multiple tube 1 is closed, solder can be filled in 11 inner surface of bending segment and copper pipe 2
Between outer surface, in this way it is possible to prevente effectively from solder is contacted with compound end surfaces 1a, to avoid the P elements and steel in solder
Matter tube body 14 contacts, i.e. the Steel material of P elements in solder and multiple tube 1 is effectively isolated, and eliminates P elements in the prior art
It incorporates and distortion of lattice phenomenon occurs inside Steel material, improve toughness and plasticity after multiple tube 1 welds, and then improve product
Service performance.
Also, weld seam is formed between layers of copper 13 and copper pipe 2, and mobile performance is not by the shadow of steel material when solder melts
It rings, help to obtain preferable mobility, guarantee appearance of weld quality.
Copper pipe is not limited to the pipe fitting to be welded of composite tube welding herein, or copper multiple tube.
On the basis of the first embodiment, further the end of interface structure is improved herein, it is specific as follows.
Fig. 5 and Fig. 6 are please referred to, Fig. 5 is the structural schematic diagram of multiple tube in second of embodiment of the invention；Fig. 6 is in Fig. 5
The assembling schematic diagram of shown multiple tube and pipe fitting to be welded.
In second of specific embodiment, the interface structure in above-described embodiment can specifically include main paragraph 101 and expand
Mouth section 100, flared section 100 are set to the end of main paragraph 101, and as its name suggests, the internal diameter of flared section 100 is greater than main paragraph 101,
Bending segment 11 and cooperation section 12 are set to flared section.
In this way, the flared section 100 of interface structure is different from 101 the two internal diameter of main paragraph, it is set to the cooperation section of copper pipe 2
Flared section 100, in this way when carrying out assemble welding, the link position of main paragraph 101 and flared section 100 can play the dress of copper pipe 2
Effect with positioning is advantageously implemented quick assembling, improves assembly efficiency.
It can be connected by changeover portion between flared section 100 in above-described embodiment and main paragraph 101, changeover portion can be
Taper connection section, taper connection section is tapering type structure from the outside to the core, that is to say, that interface structure includes that internal diameter is gradually from the outside to the core
The taper connection section of contracting.
Bending segment 11 in above-described embodiment is straightway, surrounds the bell mouth shape extended out.Bending segment 11 or song
Line segment.
Fig. 7 and Fig. 8 are please referred to, Fig. 7 is the structural schematic diagram of multiple tube in the third embodiment of the invention；Fig. 8 is in Fig. 7
The assembling schematic diagram of shown multiple tube and pipe fitting to be welded.
In the third specific embodiment, multiple tube 1 also includes steel tube body and layers of copper.Steel tube body at least outer surface is set
It is equipped with layers of copper 16, layers of copper has also can be set in the inner surface of certain steel tube body.It successively wraps from the outside to the core the end of interface structure
Bending segment 11 and cooperation section 12 are included, wherein the effect of cooperation section is identical as in above-described embodiment, unlike, in the present embodiment
The internal diameter of bending segment 11 be less than the internal diameter of cooperation section, i.e. bending segment 11 bends inwards, and can be internal diameter flaring from the outside to the core
Bore section.It is of course also possible to be curved section.
Multiple tube 1 in the present embodiment is when carrying out assemble welding with copper pipe 2 (or other materials pipe fitting to be welded), multiple tube
The cooperation section 12 of 1 interface structure is set in the cooperative end part of copper pipe 2, and the cooperation section 12 of solder from multiple tube 1 is corresponding to copper pipe 2
Gap is inwardly flowed between outer surface, and because 1 end of multiple tube has the bending segment 11 to bend inwards, such fusion welding only flows
To bending segment 11 close to the surface of cooperation section, solder is effectively avoided to contact with compound end surfaces 1a, to avoid the phosphorus in solder
Element is contacted with steel tube body, i.e. the Steel material of P elements in solder and multiple tube is effectively isolated, and is eliminated in the prior art
P elements, which incorporate, occurs distortion of lattice phenomenon inside Steel material, improve toughness and plasticity after multiple tube 1 welds, and then improve
The service performance of product.
The bending angle of bending segment 11 is typically larger than 0 and is less than or equal to 180 degree in the embodiment, and the length L1 of bending segment can be with
More than or equal to the thickness δ 1 of multiple tube, bending angle can carry out Rational choice according to the length of bending segment, as long as being able to achieve weldering
When connecing solder do not flow to compound end surfaces can.
Certainly being also not excluded for bending segment is to have the case where multiple crimping segments, i.e. bending angle is greater than 180 degree.
On the basis of the first specific embodiment and second of specific embodiment, a kind of tube assembly is also provided herein,
Multiple tube 1 and pipe fitting to be welded including welded connecting, multiple tube 1 have the first specific embodiment and second of specific embodiment
Interface structure, the end sleeve of pipe fitting to be welded is loaded on the interface structure of multiple tube, and with cooperation section cooperation, part weld seam is formed in
Between the inside of bending segment and outer surface of pipe fittings to be welded.
Pipe fitting to be welded can be copper pipe, or multiple tube, such as pipe fitting to be welded can be the third specific embodiment
In multiple tube.
On the basis of the third above-mentioned specific embodiment, a kind of tube assembly is also provided herein, including welded connecting
Multiple tube 1 and copper pipe 2, the multiple tube have the described in any item interface structures of the third specific embodiment, the interface knot
Structure is set in the inside of the copper pipe 2, and the cooperation section and the copper pipe cooperate, and part weld seam is formed in the bending segment
Outside and the copper pipe inner surface between.
Because tube assembly herein has above-mentioned interface structure, therefore tube assembly herein also has the above-mentioned of interface structure
Technical effect.
The interface structure and tube assembly of a kind of multiple tube provided by the present invention are described in detail above.Herein
Apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to help
Understand method and its core concept of the invention.It should be pointed out that for those skilled in the art, not taking off
, can be with several improvements and modifications are made to the present invention under the premise of from the principle of the invention, these improvement and modification also fall into this
In invention scope of protection of the claims.
Claims (8)
1. a kind of tube assembly, multiple tube (1) and pipe fitting to be welded including welded connecting, which is characterized in that multiple tube (1) tool
There is interface structure, the multiple tube (1) includes steel tube body (14), and steel tube body (14) at least inner surface is provided with copper
Layer, the end of the interface structure successively include bending segment (11) and cooperate section (12) from the outside to the core, the bending segment (11)
Internal diameter is greater than the internal diameter of cooperation section (12)；The end sleeve of the pipe fitting to be welded is loaded on the interface structure of the multiple tube (1),
And with the cooperation section (12) cooperate, part weld seam be formed in the bending segment (11) inside and the outer surface of pipe fittings to be welded
Between.
2. tube assembly as described in claim 1, which is characterized in that the interface structure specifically includes main paragraph (101) and expands
Mouth section (100), the flared section (100) are set to the end of the main paragraph (101), the bending segment (11) and the cooperation
Section (12) is set to the flared section (100).
3. tube assembly as claimed in claim 2, which is characterized in that the interface structure further include from the outside to the core internal diameter it is tapered
Taper connection section, the main paragraph (101) connect the flared section (100) by the taper connection section.
4. tube assembly as described in any one of claims 1 to 3, which is characterized in that the inclination angle of the bending section and vertical direction
Range are as follows: be greater than zero degree and be less than or equal to 360 degree, and the length of the bending segment (11) is more than or equal to the thickness of multiple tube (1).
5. tube assembly as described in any one of claims 1 to 3, which is characterized in that the bending segment (11) is straightway, is surrounded
The bell mouth shape extended out.
6. a kind of tube assembly, multiple tube (1) and copper pipe including welded connecting, which is characterized in that the multiple tube (1), which has, to be connect
Mouth structure, the interface structure include steel tube body (14), and steel tube body (14) at least outer surface is provided with layers of copper, described
The end of interface structure successively includes bending segment (11) and cooperation section (12) from the outside to the core, and the internal diameter of the bending segment (11) is less than
The internal diameter of cooperation section (12)；The interface structure is set in the inside of the copper pipe, and the cooperation section (12) and institute
Copper pipe cooperation is stated, part weld seam is formed between the outside of the bending segment (11) and the copper pipe inner surface.
7. tube assembly as claimed in claim 6, which is characterized in that the steel tube body (14) radially includes at least one layer,
Each layer is the alloy-layer or steel layer of steel and other metals.
8. such as the described in any item tube assemblies of claim 6 or 7, which is characterized in that the inclination angle of the bending section and vertical direction
Range are as follows: be greater than zero degree and be less than or equal to 360 degree, and the length of the bending segment (11) is more than or equal to the thickness of multiple tube (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610727277.3A CN107781541B (en) | 2016-08-24 | 2016-08-24 | A kind of tube assembly |
| PCT/CN2017/095917 WO2018036366A1 (en) | 2016-08-24 | 2017-08-04 | Connection structure of composite pipe and pipe assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610727277.3A CN107781541B (en) | 2016-08-24 | 2016-08-24 | A kind of tube assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107781541A CN107781541A (en) | 2018-03-09 |
| CN107781541B true CN107781541B (en) | 2019-12-03 |
Family
ID=61245435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610727277.3A Active CN107781541B (en) | 2016-08-24 | 2016-08-24 | A kind of tube assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107781541B (en) |
| WO (1) | WO2018036366A1 (en) |
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| CN103343847B (en) * | 2013-07-09 | 2018-02-02 | 扬州红人实业有限公司 | Cu-AL pipe and its welding procedure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319742A (en) * | 2007-06-04 | 2008-12-10 | 左铁军 | Pipe connection used for indoor and outdoor units of air conditioner and its method for making production method |
| CN201412614Y (en) * | 2009-06-04 | 2010-02-24 | 吴春英 | Socket-and-spigot connection pipe fitting with welding wires |
| CN202118387U (en) * | 2011-05-05 | 2012-01-18 | 金龙精密铜管集团股份有限公司 | Steel copper tube for air conditioners |
| CN104405975A (en) * | 2014-09-02 | 2015-03-11 | 吉林钰翎珑钢管钢构制造有限公司 | Steel pipe with bell and spigot joints |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2018036366A1 (en) | 2018-03-01 |
| CN107781541A (en) | 2018-03-09 |
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