Welding-free connecting pipe joint
阅读说明:本技术 免焊连接管接头 (Welding-free connecting pipe joint ) 是由 徐志超 李红星 张健 于 2019-12-05 设计创作,主要内容包括:本发明属于金属管接头技术领域,提供了一种免焊连接管接头,包括定位环,具有限定用于扩口管的外表面;第一联接体,由所述定位环和所述扩口管机械连接组成;内嵌套,具有限定用于直插管的管内;第二联接体,由所述内嵌套和直插管机械连接组成;第三联接体,由所述第二联接体部分机械连接于所述第一联接体部分包含的所述扩口管内;速合环,具有限定用于所述第三联接体的所述的扩口管外表面,及所述第三联接体机械连接后;本发明采用金属管材的物理特性,合理的形变配合从而达到管件之间免焊连接的目的,节约成本。(The invention belongs to the technical field of metal pipe joints, and provides a welding-free connecting pipe joint which comprises a positioning ring and a welding-free connecting pipe joint, wherein the positioning ring is provided with an outer surface limited for a flared pipe; the first connecting body is formed by mechanically connecting the positioning ring and the flared tube; an inner nest having a tube defined for a straight cannula; the second coupling body is formed by mechanically connecting the inner nesting pipe and the straight inserting pipe; a third coupling body mechanically coupled by the second coupling body portion within the flare tube contained by the first coupling body portion; a snap ring having said flared tube outer surface defined for said third coupling body, and upon mechanical coupling of said third coupling body; the invention adopts the physical characteristics of the metal pipes and reasonably deforms and matches, thereby achieving the purpose of welding-free connection between the pipe fittings and saving the cost.)
1. A welding-free connecting pipe joint comprises a connecting pipe body,
a positioning ring having an outer surface defining a flared tube;
the first connecting body is formed by mechanically connecting the positioning ring and the flared tube;
an inner nest having a tube defined for a straight cannula;
the second coupling body is formed by mechanically connecting the inner nesting pipe and the straight inserting pipe;
a third coupling body mechanically coupled by the second coupling body portion within the flare tube contained by the first coupling body portion;
a snap ring having said flared tube outer surface defined for said third coupling body, and after said third coupling body is mechanically coupled.
2. The solderless connecting tube joint of claim 1, wherein: the positioning ring is a flared ring and is provided with an original section and a positioning ring flared section, and the joint position of the original section and the positioning ring flared section is the positioning ring flared part.
3. The solderless connecting tube joint of claim 2, wherein: and the flaring part of the positioning ring is mechanically connected to the flaring part of the flaring pipe.
4. The solderless connecting tube joint of claim 1, wherein: the inner nesting end is provided with a clamping ring, the outer diameter of the clamping ring is larger than the inner diameter of the flared pipe and smaller than the outer diameter of the flared pipe, or the outer diameter of the clamping ring is smaller than the inner diameter of the flared pipe.
5. The solderless connecting tube joint of claim 4, wherein: the snap ring that the embedded cover was equipped with mechanically connect in flaring pipe flaring department.
Technical Field
The invention relates to the technical field of metal pipe joints, in particular to a welding-free connecting pipe joint.
Background
With the development of modern large industries, the pipeline fluid industry, particularly the refrigeration industry, the solar industry and even the hospital oxygen therapy bottle are widely applied to metal pipelines, at present, most of the construction site installation of the industries is copper pipes, but the copper resources are seriously short, the cost is higher, the sustainable development of social large production is not facilitated, China is a country with rich aluminum resources, and the aluminum resources with low production cost, abundance and low cost provide convenient conditions. Therefore, copper pipes and aluminum pipes are often connected together to be used as conveying pipelines in refrigeration industry, solar industry and even hospital oxygen bottle industry to form a circulating pipeline system, so that the production cost is reduced, and the copper pipes and the aluminum pipes are generally connected by copper-aluminum joints; a common copper-aluminum joint in the market is provided with a pipe joint structure connected with an aluminum pipe at the end, the pipe joint structure is generally conical, the conical pipe joint structure is inserted into the aluminum pipe, and the connection is carried out in an electric resistance welding mode; however, the conical pipe joint is too simple in structure, the welding quality of the copper aluminum joint and the aluminum pipe is unstable, the welding area is small, the corrosion resistance of the resistance welding mode is weak, and leakage is easy to occur; the second one is a product of German Lokring company, the structure of which is composed of a middle copper pipe part, two ends of which are two aluminum quick closing rings with different diameters, two ends of the middle copper pipe are provided with a closing end, the closing end is directly inserted into a pipeline and then is inserted into the closing end through the quick closing rings, and the pipeline and the copper pipe which are inserted into the closing end are consolidated; such connected mode, the benefit lies in can be through the fast throat that closes that is equipped with on ring sum copper pipe, with the abundant pressfitting of two pipe fittings, sealing performance is also fine, is used for air conditioner pipeline to connect more, perhaps on external pipeline, but such product uses in the market many, and the product leakproofness is good, but its product use material mainly is the copper product, and the cost consumes greatly, and processing technology is loaded down with trivial details, and the low price of efficiency is expensive.
Disclosure of Invention
In order to overcome the technical defects of the prior patents and the metal pipeline joints currently on the market, the inventor of the invention has conducted intensive research on the defects and completed the invention after paying a great deal of creative labor.
Specifically, the technical problems to be solved by the present invention are: the first physical characteristic that adopts metal tubular product, thereby the reasonable deformation cooperation reaches exempting from to weld between the pipe fitting and connects, and the problem that the big price is expensive of market metal pipe joint consumptive material volume at present is solved to the second, and the third guarantees that the product is connected the effect of back seal and is unanimous with market effect at present.
To achieve the above objects, a welding-free connection pipe joint includes,
a positioning ring having an outer surface defining a flared tube;
the first connecting body is formed by mechanically connecting the positioning ring and the flared tube;
an inner nest having a tube defined for a straight cannula;
the second coupling body is formed by mechanically connecting the inner nesting pipe and the straight inserting pipe;
a third coupling body mechanically coupled by the second coupling body portion within the flare tube contained by the first coupling body portion;
a snap ring having said flared tube outer surface defined for said third coupling body, and after said third coupling body is mechanically coupled.
In the invention, as a preferred technical scheme, the positioning ring is a flared ring and is provided with an original section and a positioning ring flared section, and the joint position of the original section and the positioning ring flared section is the positioning ring flared part.
In the invention, as a preferred technical scheme, the flaring part of the positioning ring is mechanically connected to the flaring part of the flaring pipe.
In the invention, as a preferable technical scheme, one end of the inner nest is provided with a clamping ring, and the outer diameter of the clamping ring is larger than the inner diameter of the flared pipe and smaller than the outer diameter of the flared pipe, or the outer diameter of the clamping ring is smaller than the inner diameter of the flared pipe.
In the invention, as a preferable technical scheme, the snap ring embedded and sleeved with the flare pipe is mechanically connected to the flaring opening of the flare pipe.
After the technical scheme is adopted, the invention has the beneficial effects that:
in the invention, as a preferred technical scheme, the positioning ring is a flared ring and is set as an original section and a positioning ring flared section, the joint position of the original section and the positioning ring flared section is a positioning ring flared section, the size of the inner diameter of the pipe orifice of the original section flared section is smaller than the size of the outer diameter of the flared pipe mechanically matched with the original section flared section, and the interference fit between the positioning ring and the flared pipe is further realized, so that the positioning ring applies load to the flared pipe when the positioning ring and the flared pipe are in interference fit, and the size of the flared pipe deforms within a stress allowable range.
In the invention, as a preferred technical scheme, the flaring part of the positioning ring is mechanically connected to the flaring part of the flaring pipe, and further, when the positioning ring is mechanically matched with the flaring pipe, a radial load is applied to the flaring pipe, so that the flaring part of the positioning ring can be further forcibly embedded into the flaring part of the flaring pipe, the purpose of applying radial inward pressure to the flaring part of the flaring pipe is achieved, and the size of the flaring part of the specific flaring pipe is deformed within a stress allowable range.
In the invention, as a preferable technical scheme, a snap ring is arranged at one end of the inner nest, the outer diameter of the snap ring is larger than the inner diameter of the flared pipe and smaller than the outer diameter of the flared pipe, or the outer diameter of the snap ring is smaller than the inner diameter of the flared pipe, the size of the sleeve body is larger than the inner diameter of the straight insertion pipe and smaller than the outer diameter of the straight insertion pipe, the size design of the integral inner nest further ensures the mechanical connection relation of the inner nest and the interference fit between the straight insertion pipe and the flared pipe, or the outer diameter of the snap ring is smaller than the inner diameter of the flared pipe, so that the inner nest can be further mechanically assembled into the.
In the invention, as a preferable technical scheme, the snap ring embedded and sleeved with the locating ring is mechanically connected to the flaring opening of the flaring pipe, and the snap ring can be further forced to generate a radially outward supporting force on the flaring opening of the flaring pipe in an interference fit mode of the snap ring and the flaring opening of the flaring pipe, so that the locating ring has a further supporting effect on a deformation part generated by the radially inward pressure of the flaring pipe.
The beneficial effect of global design: from the aspect of product connection structure design, the invention relates to a welding-free connecting pipe joint which adopts a welding-free cold connection mode, and achieves welding-free connection between pipe fittings and natural sealing insertion in an ideal state by fully utilizing the physical characteristics of metal pipes and reasonably deforming and matching; compared with the existing common copper-aluminum pipe joint, the copper-aluminum pipe joint has the advantages and characteristics that the copper joint on the existing copper-aluminum pipe joint in the market is replaced by the inner nesting in design, the copper material loss can be reduced due to material saving, the product process is reduced, the metal material loss of the product is reduced, and the effect the same as that of the existing joint can be further realized, and even better.
Drawings
FIG. 1 is a schematic diagram of an overall front view structure in an embodiment of the invention;
FIG. 2 is an exploded perspective view of the embodiment of the present invention
FIG. 3 is a sectional view of the inner part of the embodiment of the invention;
FIG. 4 is a schematic structural diagram of an inner nested part in the embodiment of the invention;
FIG. 5 is a diagram illustrating the positioning ring components of an embodiment of the present invention.
In the figure, 1-flared tube, 101-flared section, 102-flared tube flared section, 2-positioning ring, 201-positioning ring flared section, 202-positioning ring flared section, 203-original section, 3-quick-closing ring, 4-inner nesting, 401-snap ring, 402-sleeve body and 5-straight-insertion tube
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Referring to fig. 1-5, a weld-free joint for connecting pipes includes,
a
the first connecting body is formed by mechanically connecting the
an
the second coupling body is formed by mechanically connecting the
a third coupling body mechanically connected by the second coupling body part within the
a
In the invention, as a preferred technical scheme, the
In the invention, as a preferred technical scheme, the positioning
In the invention, as a preferred technical scheme, a
In the invention, as a preferable technical scheme, the
The whole process is installed and implemented:
during installation, the
The complete working process comprises the following steps: the physical property of the metal material is reasonably utilized, when the first and the second coupling bodies are prepared and the first and the second coupling bodies are coaxially inserted in place, namely, the
Elevation: the term "facade" as used in this installation is not an industry term and refers only to a facade that is formed vertically and through the center of a cylindrical workpiece during assembly.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.