CN112066103B - Axial extrusion type connecting pipe joint assembly and pipe joint formed by same - Google Patents
Axial extrusion type connecting pipe joint assembly and pipe joint formed by same Download PDFInfo
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- CN112066103B CN112066103B CN202011079903.5A CN202011079903A CN112066103B CN 112066103 B CN112066103 B CN 112066103B CN 202011079903 A CN202011079903 A CN 202011079903A CN 112066103 B CN112066103 B CN 112066103B
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- 238000001125 extrusion Methods 0.000 title claims abstract description 155
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 16
- 238000010168 coupling process Methods 0.000 description 16
- 238000005859 coupling reaction Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
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Classifications
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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
- F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
- F16L13/16—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars
- F16L13/165—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars the pipe or collar being deformed by an axially movable sleeve
Abstract
The invention discloses an axial extrusion type connecting pipe joint assembly and a pipe joint formed by the same, and relates to the technical field of pipeline connection. Various axial extrusion type connecting pipe joints formed by the axial extrusion type connecting pipe joint assembly, such as axial extrusion permanent straight-through pipe joints, axial extrusion detachable straight-through pipe joints, axial extrusion type three-way pipe joints and other pipe joints, have the advantages of reliable connection, high connection strength and good sealing performance, and can be suitable for pipeline connection with high connection strength, high use reliability and high sealing performance requirements.
Description
Technical Field
The invention relates to the technical field of pipeline connection, in particular to an axial extrusion type connecting pipe joint assembly and a pipe joint formed by the same.
Background
The axial extrusion type pipe joint is a novel pipeline mechanical joint connection technology, and refers to a technology for realizing mutual connection or sealing of metals among the same or multiple materials at a temperature lower than a recrystallization temperature based on the basic principle that the materials generate elastic-plastic deformation under the interference fit action. The connecting joint technology has the advantages of high pressure resistance, corrosion resistance, energy conservation, safety, quick installation and the like. Because the traditional pipeline connection mode has certain defects in connection sealing performance, automation degree and safety, the axial extrusion type connection mode has great application value in the pipeline connection field.
The existing axial extrusion type pipeline connection mode adopts special axial extrusion equipment and tools, an extrusion ring is pushed along the axial direction of a connector body by certain axial thrust, after an axial extrusion tool is removed, radial holding is formed by elastic-plastic deformation of the extrusion ring, the connector body and a pipe in the extrusion process, the connection strength completely depends on mechanical interference, the connection reliability is difficult to guarantee, the axial extrusion type pipeline connection mode can only be used for pipeline connection with low connection strength requirement and low use requirement, and the axial extrusion type pipeline connection mode cannot be suitable for pipeline connection with high connection strength and high use reliability requirement.
Disclosure of Invention
In view of the above, the present invention provides an axial extrusion type connecting pipe joint assembly with reliable connection and good sealing performance and a pipe joint formed by the same, so as to be suitable for pipeline connection with high connection strength and high use reliability requirements.
The invention provides the following technical scheme:
the invention provides an axial extrusion type connecting pipe joint component, which comprises:
the inner surface is provided with a tooth groove structure and the outer surface is provided with a joint component with a groove structure; the tooth groove structure is used for forming connection and sealing with the pipe in the axial extrusion process; and the number of the first and second groups,
an annular member capable of self-locking connection with the joint member; the inner surface of the annular part is designed with a flange structure which is matched with the groove structure of the joint part to form a structure self-locking.
Furthermore, the outer surface of the joint part is sequentially designed with a first groove (101), a first flange (102), the groove structure, a first inclined plane (106), a first plane (107) and a second plane (108); the groove structure comprises a second groove (104) and a boss (105); the first flange (102) structure extends axially along the fitting component and provides support for a pressing tool to press the pressing component, and the first side (103) of the first flange (102) is the termination point of the pressing component; the first plane (107) transitions along the joint component axial extension to the second plane (108), the diameter of the second plane (108) being smaller than the diameter of the first plane (107).
Further, the tooth groove structure comprises a plurality of annular grooves (109) for providing material flowing space for the extrusion ring to extrude the pipe in the deformation process, and the annular grooves (109) have axial distance with each other.
Further, the pressing member includes an outer edge end surface (118);
the inner surface of the extrusion part comprises in sequence: a third planar surface (117), a fourth planar surface (116), a second beveled surface (115) extending axially from the fourth planar surface (116), the flange structure, a second side surface (112), and a fifth planar surface (111); the flange structure includes: a third groove (114) and a flange (113);
the diameter of the fourth plane (116) is smaller than the diameter of the first plane (107);
the diameter of the third plane (117) is smaller than the diameter of the second plane (108);
the second side (112) and the fifth flat surface (111) cooperate with a first flange (102) of the fitting component to provide support for axial compression; the second side surface (112) is an axial extrusion termination surface.
The invention also provides an axial extrusion permanent straight-through pipe joint formed by the axial extrusion type connecting pipe joint component, which comprises:
a joint body and two extrusion rings;
the joint body is an integral structure formed by two joint parts which are symmetrically designed;
the pressing ring is constituted by the annular member.
The invention also provides an axial extrusion detachable straight-through pipe joint formed by the axial extrusion type connecting pipe joint component, which comprises:
a detachable pipe sleeve joint component and a detachable light straight component;
the detachable pipe sleeve joint component consists of a detachable pipe sleeve joint body, a detachable nut, a stainless steel wire and a first extrusion ring;
the detachable light straight component consists of a detachable light straight body and a second extrusion ring;
the detachable pipe sleeve connector body is an integrated structure formed by the connector component and a pipe sleeve component matched with the detachable light straight component; the first pressing ring is constituted by the annular member; the detachable light straight body is an integrated structure formed by a light straight part matched with the detachable pipe sleeve connector body and the connector part; the second pressing ring is constituted by the annular member.
Further, a shaft shoulder matched with the detachable nut and a sealing surface used for forming a sealing effect are designed on the detachable pipe sleeve joint body;
the detachable light straight body is provided with a thread matched with the detachable nut and a conical surface for forming a sealing effect.
Furthermore, the inner surface of the detachable nut is designed with a fourth groove for matching with the stainless steel wire to ensure the locking strength.
Furthermore, the inner hole of the detachable pipe sleeve joint body is designed with a waistcoat structure;
the inner hole of the detachable light straight body is designed with a waistcoat structure.
The invention also provides an axial extrusion type three-way pipe joint formed by the axial extrusion type connecting pipe joint component, which comprises the following components:
a tee body and three extrusion rings;
the tee body is an integrated structure formed by three joint parts;
the pressing ring is constituted by the annular member.
The invention has the advantages and positive effects that:
the axial extrusion type connecting pipe joint assembly comprises the joint part and the annular part, reliable connection is formed by radial mechanical matching of the joint part and the annular part, in addition, a groove structure designed on the outer surface of the joint part and a flange structure designed on the inner surface of the annular part are matched with each other to form structure self-locking, and the connection reliability and the connection strength are further improved. Various axial extrusion type connecting pipe joints formed by the axial extrusion type connecting pipe joint assembly, such as axial extrusion permanent straight-through pipe joints, axial extrusion detachable straight-through pipe joints, axial extrusion type three-way pipe joints and other pipe joints, have the advantages of reliable connection, high connection strength and good sealing performance, and can be suitable for pipeline connection with high connection strength, high use reliability and high sealing performance requirements.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of an axial squeeze-type connecting pipe joint provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of connection of an axial extrusion type straight-through pipe joint provided by an embodiment of the invention;
fig. 3 is a schematic structural view of a joint body in an axial squeeze type connecting pipe joint provided by an embodiment of the invention;
figure 4 is a schematic view of a tab portion provided by an embodiment of the present invention;
FIG. 5 is a schematic structural view of an extrusion assembly according to an embodiment of the present invention;
fig. 6 is a schematic structural view of an axial extrusion type detachable through pipe joint provided in an embodiment of the present invention;
FIG. 7 is a schematic diagram of a removable pipe-in-pipe joint assembly according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a detachable light straight component according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a detachable pipe-in-pipe fitting body according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a detachable light straight body according to an embodiment of the present invention;
FIG. 11A is a schematic structural view of a permanent tee fitting according to an embodiment of the present invention;
fig. 11B is a schematic structural diagram of a detachable three-way pipe joint according to an embodiment of the present invention;
FIG. 11C is a schematic structural view of another detachable three-way pipe joint according to an embodiment of the present invention;
FIG. 12 is a schematic view of a permanent tee body according to an embodiment of the present invention;
fig. 13A is a schematic structural diagram of a detachable three-way joint body according to an embodiment of the present invention;
FIG. 13B is a schematic structural diagram of another detachable three-way connector body according to an embodiment of the present invention;
101, a first groove; 102. a first flange; 103. a first side surface; 104. a second groove; 105. a boss; 106. a first inclined plane; 107. a first plane; 108. a second plane; 109. an annular groove; 110. a waistcoat structure; 111. a fifth plane; 112. a second side surface; 113. a flange; 114. a third groove; 115. a second inclined plane; 116. a fourth plane; 117. a third plane; 118. an outer edge end face; 119. a cambered surface; 120. a second flange; 121. a vertical plane; 122. round corners; 123. a thread; 124. a hexagonal structure; 125. a conical surface.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The axial extrusion type pipeline process connecting technology adopts special axial extrusion equipment and tools, an extrusion ring is pushed along the axial direction of a joint body by certain axial thrust, because the diameter of an inner hole of the extrusion ring is smaller than the diameter of an outer ring of the joint body, after the extrusion ring generates axial displacement, the outer wall of the joint body is extruded by mechanical interference, the joint body generates deformation and compresses a pipe, and in the whole deformation process, the extrusion ring, the joint body and the pipe generate elastoplastic deformation, because the different elastoplastic deformation amounts of the material strength among the three are different, tight connection among the three can be realized through deformation, and the sealing effect is achieved.
The invention provides an axial extrusion type connecting pipe joint component with high connecting strength, reliable connection and good sealing performance and a pipe joint formed by the axial extrusion type connecting pipe joint component, which are suitable for pipeline connection with high connecting strength, high use reliability and high sealing performance requirements.
The axial extrusion type connecting pipe joint component in the embodiment of the invention comprises: a joint component and an annular component. The coupling member and the ring member are generally annular structures. Referring to fig. 4 and 5, the structural diagrams of the components included in the axial squeeze-type connecting pipe joint assembly according to the embodiment of the present invention are shown.
As shown in fig. 5, the outer surface of the coupling member includes an annular first groove 101, an annular first flange 102 adjacent to the first groove 101, the first flange 102 extending axially along the coupling body and providing support for the extrusion tool to extrude the extrusion ring, the side surface of the first flange 102, i.e., the first side surface 103, being the termination point of the extrusion ring, a small annular second groove 104 adjacent to the first flange 102, a small boss 105 adjacent to the second groove 104, the second groove 104 and the boss 105 forming a groove structure, forming a self-locking feature, and cooperating with the self-locking feature on the annular member to improve the strength and reliability of the connection. Adjacent to the projection 105 is a first inclined surface 106, and following the first inclined surface 106 is a first plane 107, the first plane 107 extends axially to transition to a second plane 108, and the diameter of the second plane 108 is smaller than that of the first plane 107. The inner surface of the coupling member also has a particular geometry and includes 2 or more annular grooves 109 at an axial distance from one another that provide space for the flow of material during deformation of the extruded tubing material by the extrusion ring.
As shown in fig. 6, the pressing member includes an outer edge end surface 118; the inner surface of the extrusion part comprises in sequence: a third plane 117, a fourth plane 116, a second bevel 115 extending axially from said fourth plane 116, a third groove 114, a flange 113, a second side 112 and a fifth plane 111. The fourth plane 116 is in contact with the first plane 107, and the diameter of the fourth plane 116 is smaller than that of the first plane 107; the third plane 117 is in contact with the second plane 108, and the diameter of the third plane 117 is smaller than that of the second plane 108. The second side 112 and the fifth flat surface 111 cooperate with the first flange 112 of the joint assembly to provide support for axial compression; the second side 112 is an axial crush termination. The flange structure formed by the third groove 114 and the flange 113 forms a self-locking feature, and the self-locking feature on the joint component is matched with the self-locking feature on the joint component to improve the connection strength and the connection reliability.
The axial extrusion type connecting pipe joint assembly comprises the joint part and the annular part, a groove structure designed on the outer surface of the joint part and a flange structure designed on the inner surface of the annular part can be matched to form structure self-locking, and the axial connecting strength and the connecting reliability are enhanced, so that a pipe joint formed by the axial extrusion type connecting pipe joint assembly can be suitable for pipeline connection with high connecting strength and high using reliability requirements.
The axial squeeze type connecting pipe joint assembly in the above embodiments can be formed into various forms of axial squeeze type connecting pipe joints. The following specifically describes three types of axial squeeze type joint pipe couplings made up of the axial squeeze type joint pipe coupling assemblies in the above embodiments.
1. Axial extrusion permanent straight-through pipe joint
Referring to fig. 1, a schematic diagram of an axially extruded permanent straight-through pipe joint in an embodiment of the present invention is shown. The axial extrusion permanent straight-through pipe joint consists of a joint body 1 and two extrusion rings 2, wherein the joint body is an integral structure formed by two joint parts which are designed in bilateral symmetry, and the extrusion rings are formed by extrusion parts.
Referring to fig. 2, which shows a process view for realizing axial extrusion connection of pipelines, when in use, an extrusion tool pushes an extrusion ring axially along a joint body, the extrusion ring extrudes the joint body and a pipe, so that a tooth groove structure of the joint body is embedded into the pipe to form mechanical connection and metal sealing, and simultaneously, a flange structure of the extrusion ring is matched with a groove structure of the joint body to form structural self-locking.
As shown in fig. 3, the body of the axially extruded permanent straight-through pipe joint exhibits a symmetrical geometry, and the joint components on both sides are identical in structure and function.
Fig. 4 shows in detail the construction of the joint assembly, namely a half of the joint body (right half), the outer surface of the joint assembly comprising a first groove 101, adjacent to the first groove 101 a first flange 102 extending axially along the joint body and providing support for the extrusion tool to extrude the extrusion ring, the side 103 of the first flange 102 being the termination point of the extrusion ring, adjacent to the first flange 102 a small annular second groove 104, adjacent to the second groove 104 a small boss 105, the combination of the second groove 104 and the boss 105 forming a self-locking feature, adjacent to the boss 105 a first inclined surface 106, following the inclined surface 106 a first plane 107, the first plane 107 extending axially to a second plane 108, the diameter of the second plane 108 being smaller than the diameter of the first plane 107. The inner surface of the coupling assembly also has a particular geometry and includes 2 or more annular grooves 109 at an axial distance from each other that provide space for the flow of material during deformation of the extruded tubing.
Figure 5 shows in detail the construction of the extrusion assembly, i.e. the extrusion ring, which is generally of annular configuration with an internal bore for mechanical engagement with the coupling body. Axial pressure is applied to the outer peripheral end surface 118 of the compression ring by the compression tool, the fourth flat surface 116 of the inner surface of the compression ring first contacts the first flat surface 107 of the fitting body, since the diameter of the fourth flat surface 116 is smaller than that of the first flat surface 107, the extrusion ring begins to extrude the joint body and the pipe, the fourth flat surface 116 of the extrusion ring extends all the way to the second inclined surface 115 along the axial direction, the deformation of the pipe and the joint body gradually increases along with the axial movement of the extrusion ring, the plastic deformation stage is carried out from the elastic deformation stage, the material flows into the annular groove 109 of the joint body during the plastic deformation of the pipe, for ensuring the axial coupling strength and the reliability of the coupling body to the pipe, while the third plane 117 of the pressing ring is in contact with the second plane 108 of the coupling body, the diameter of the third plane 117 is smaller than that of the second plane 108, so that the second plane 108 can be pressed to prevent upwarp. Adjacent the fourth flat surface 116 is a second angled surface 115, the second angled surface 115 being in contacting engagement with the connector body first angled surface 106. Next to the second inclined surface 115 is a third recess 114 and a flange 113, the combination of the third recess 114 and the flange 113 forming a self-locking feature that cooperates with a self-locking feature on the coupling body to improve the strength of the connection and to ensure the reliability of the connection. The fifth flat surface 111 and the second side surface 112 of the compression ring cooperate with the first flange 112 of the fitting body to provide support for axial compression, and the second side surface 112 is an axial compression termination surface.
The axial extrusion process has been illustrated in fig. 2, first, a squeezing ring is disposed at the end of each end of the connector body, then the pipe is inserted into the connector body through the inner hole of the squeezing ring, and finally, the squeezing tool presses the squeezing ring, the connector body and the pipe together against the flange of the connector body and the outer end face of the squeezing ring. To better accomplish the extrusion process, a lubricant or grease may be applied between the coupling body and the extrusion ring to reduce friction between the coupling body and the extrusion ring.
2. Axial extrusion detachable straight-through pipe joint
Referring to fig. 6, an axially extruded removable straight through fitting embodiment of the present invention is shown. The axial extrusion detachable straight-through pipe joint consists of a detachable pipe sleeve joint component and a detachable light straight component.
Fig. 7 shows a specific structure of a detachable pipe-in-pipe joint assembly composed of a first extrusion ring 201, a stainless steel wire 202, a detachable nut 203, and a detachable pipe-in-pipe joint body 204; wherein, the detachable pipe sleeve joint body 204 is an integrated structure formed by a joint part and a pipe sleeve part matched with the detachable light straight body in the detachable light straight assembly; in a possible embodiment, the left half of the detachable pipe sleeve joint body 204 is a joint part (the joint part in fig. 4 is rotated by 180 °), the inner surface of the detachable pipe sleeve joint body is designed with a tooth groove structure for forming connection and sealing with the pipe in the axial extrusion process, and the outer surface of the detachable pipe sleeve joint body is designed with a groove structure for realizing self-locking connection with the first extrusion ring; the right half of the removable tube-in-tube connector body 204 is a tube-in-tube component whose outer surface is designed with a shoulder that mates with a removable nut and a sealing surface for creating a sealing action. The first extrusion ring 201 is formed by an annular member (the annular member is rotated 180 in fig. 5) whose inner surface is designed with a flange structure that cooperates with the groove structure of the detachable pipe-sleeve connector body 204 to form a structural self-locking. The inner surface of the detachable nut 203 is designed with a fourth groove for ensuring the locking strength of the nut by matching with the stainless steel wire 202. When the pipe socket joint is used, the first extrusion ring 201 is pushed axially along the detachable pipe socket joint body 204 by an extrusion tool to extrude the detachable pipe socket joint body and the pipe, so that the tooth groove structure of the detachable pipe socket joint body is embedded into the pipe to form mechanical connection and metal sealing, meanwhile, the first extrusion ring 201 and the detachable pipe socket joint body 204 form structure self-locking to ensure connection strength and connection reliability, and then the detachable nut is screwed down to realize mechanical connection.
Fig. 8 shows a specific structure of the detachable light straight component, which is composed of a detachable light straight body 205 and a second extrusion ring 206. In a possible embodiment, the right half part of the detachable light straight body 205 is a joint component, the inner surface of the detachable light straight body is designed with a tooth groove structure for forming connection and sealing with a pipe in an axial extrusion process, and the outer surface of the detachable light straight body is designed with a groove structure for realizing self-locking connection with a second extrusion ring; the left half part of the detachable light straight body 205 is a light straight part, and the outer surface of the light straight part is provided with a thread structure matched with the detachable nut and a conical surface for forming a sealing effect; the left half part and the right half part are of an integral structure. The second extrusion ring 206 is formed by a ring-shaped member, and the inner surface thereof is designed with a flange structure which is matched with the groove structure of the detachable light straight body 205 to form a self-locking structure. When the device is used, the second extrusion ring 206 is axially pushed along the detachable light straight pipe 205 by an extrusion tool to extrude the detachable light straight pipe and the pipe, so that the tooth socket structure of the detachable light straight pipe is embedded into the pipe to form mechanical connection and metal sealing, meanwhile, the second extrusion ring 206 and the detachable light straight pipe 205 form structure self-locking to ensure the connection strength and the connection reliability, and then the threaded structure is matched with a nut to realize mechanical connection.
Figure 9 shows in detail the construction of a detachable pipe-in-pipe joint body, the outer surface comprising an arc 119 as the sealing surface, which can form a line contact seal, a second flange 120 next to the arc 119, the second flange 120 extending axially along the detachable pipe-in-pipe joint body, the width of the second flange 120 not being too small, the left side of the second flange 120 being a small vertical plane 121 and a fillet 122, which cannot be too small for cooperation with the end face of the nut. The fillet 122 is followed by the first groove 101 belonging to the joint component, next to the first groove 101 is the first flange 102, the first flange 102 extending in the axial direction, primarily for supporting the pressing tool. The side surface of the first flange 102, that is, the first side surface 103 is a termination surface of axial displacement of the extrusion ring, and the first groove 104 and the boss 105 are respectively adjacent to the first side surface 103, and the first groove 104 and the boss 105 form a self-locking feature for forming structural self-locking in cooperation with the first extrusion ring 201, so that the connection strength and the connection reliability are improved. The removable sleeve inner surface also has special structural features and comprises 2 or more annular grooves 109, each of which is axially spaced from the other, the annular grooves 109 providing space for the flow of material during the deformation of the extruded tube by the extrusion ring. In addition, the inner hole has a waistcoat structure 110 for positioning the pipe.
Fig. 10 shows in detail the structure of the detachable light straight body, the outer surface includes a thread 123, which cooperates with the detachable nut to ensure the connection strength and the connection reliability, the adjacent thread 123 is a hexagonal structure 124, the adjacent hexagonal structure 124 is a first groove 101 belonging to the joint component, the length of the first groove 101 is not too short, the first groove 101 extends along the axial direction, the adjacent first groove 101 is a first flange 102, the first flange 102 cannot be too thin, the right side of the first flange 102 is a first side 103, the first side 103 is an axial movement termination surface of the second extrusion ring 206, the adjacent first side 103 is a second groove 104 and a boss 105, respectively, the second groove 104 and the boss 105 form a self-locking feature, and the self-locking for cooperating with the second extrusion ring 206 to form a structural self-locking improves the connection strength and the connection reliability. The inner surface of the detachable light straight body is also provided with a special structure and comprises 2 or more annular grooves 109, axial distances exist among the annular grooves, the annular grooves provide material flowing spaces for extrusion rings to extrude a pipe in the deformation process, the inner hole is also provided with a waistcoat structure 123 for positioning the pipe, and the conical surface 125 is a sealing surface and is used for being matched with the cambered surface 119 of the detachable pipe sleeve joint body to achieve a sealing effect.
The first and second pressing rings 201 and 206 have a structure similar to that of the ring assembly shown in fig. 5, and more particularly, the first pressing ring 201 has the same structure as that of the ring assembly shown in fig. 5 after being rotated by 180 °, and the second pressing ring 206 has the same structure as that of the ring assembly shown in fig. 5.
The axial extrusion process is shown in fig. 2, an extrusion ring is respectively disposed at the end of one end of the detachable pipe sleeve joint body and the detachable light straight body, then two pipes are respectively inserted into the detachable pipe sleeve joint body and the detachable light straight body through the inner holes of the extrusion ring, the extrusion tool is firstly abutted against the outer end faces of the flange of the detachable pipe sleeve joint body and the extrusion ring, the extrusion tool extrudes the extrusion ring, the detachable pipe sleeve joint body and the pipes together, after the connection between the detachable pipe sleeve joint body and the pipes is completed, the extrusion tool is abutted against the outer end faces of the flange of the detachable light straight body and the extrusion ring on the other side, and the extrusion connection among the extrusion ring, the detachable light straight body and the pipes is completed. To better accomplish the extrusion process, the outer surface of the coupling member and the inner surface of the annular member may be coated with a dry lubricant or grease to reduce friction.
3. Axial extrusion type three-way pipe joint
The axial extrusion type three-way joint body can be divided into two structural forms of a permanent three-way joint and a detachable three-way joint, as shown in figures 11A-11C.
The permanent tee joint comprises a permanent tee body 301, a third extrusion ring 302, a fourth extrusion ring 303 and a fifth extrusion ring 304, wherein the permanent tee body 301 is an integral structure consisting of three joint components in the embodiment, and each extrusion ring is an annular component in the embodiment; the three extrusion rings respectively extrude the permanent tee body and the pipe to realize the connection of the three pipelines.
The detachable three-way pipe joint consists of a detachable three-way body, an extrusion ring, a detachable nut, a stainless steel wire, a detachable pipe sleeve joint component and a detachable light straight body component, wherein the detachable pipe sleeve joint component consists of a detachable pipe sleeve joint body, a detachable nut, a stainless steel wire and an extrusion ring, and the detachable light straight component consists of a detachable light straight body and an extrusion ring. The two forms of the detachable tee coupling, one detachable and two detachable at both ends, are shown in fig. 11B and 11C, respectively, and only two forms of the detachable tee are shown in this application, and in fact, the detachable tee can have various structural forms, but basically all can be covered in the structural features described in this patent. When the three-way pipe is used, the extrusion ring extrudes the detachable tee body and the pipe to realize connection and sealing between the three, then the detachable nut is screwed to realize connection between the detachable tee body and the detachable light straight component, the length of the thread ensures connection strength, and meanwhile, the deformation contact of the sealing surface ensures the whole sealing performance of the structure.
Fig. 12 shows a specific structure of a permanent three-way joint body, the components 142, 143 and 144 have the same structure as the joint component in fig. 4, the inner surface is designed with a tooth-shaped groove structure for providing a material flow space during the extrusion deformation process to realize the mechanical connection with the pipe, the connection strength and the sealing effect are ensured, the outer surface is designed with an annular groove for forming a structure self-locking with the flange of the extrusion ring, and the flange provides support for the extrusion tool. The inner hole of the permanent three-way joint body is designed with a sleeveless jacket structure 110 which plays a positioning role for extruding the pipe.
Fig. 13A shows an example of a structure of a first detachable three-way joint body with a detachable one end, the structures of the components 146 and 147 are the same as those of the joint assembly in fig. 4, the inner surface of the component is designed with a tooth-shaped groove structure for providing a material flowing space in the extrusion deformation process to realize mechanical connection with a pipe, so as to ensure the connection strength and the sealing effect, the outer surface is designed with an annular groove for forming a structure self-locking with a flange of an extrusion ring, and the flange provides a support for an extrusion tool. The structure of block 148 is the same as that described above for the removable union body of fig. 9, with the outer surface including a sealing surface and a shoulder for engaging a nut.
Fig. 13B shows an example of a structure of a second detachable three-way joint body with two detachable ends, the structure of the component 149 is similar to that of the joint component in fig. 4, the inner surface of the component is designed with a tooth-shaped groove structure for providing a material flowing space in an extrusion deformation process to realize mechanical connection with a pipe, so as to ensure connection strength and sealing effect, the outer surface of the component is designed with an annular groove for forming a structural self-locking with a flange of an extrusion ring, and the flange provides support for an extrusion tool. The structure of the member 150 is similar to that of the detachable light straight body in fig. 10, and the outer surface is threaded and the inner surface is tapered for sealing. The structure of block 151 is similar to that of the removable union body of figure 9, previously described, with the outer surface including a sealing surface and a shoulder for engaging a nut.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. An axial extrusion detachable straight-through pipe joint formed by an axial extrusion connecting pipe joint component is characterized in that,
the axial squeeze type connecting pipe joint assembly comprises: the inner surface is provided with a tooth groove structure and the outer surface is provided with a joint component with a groove structure; the tooth groove structure is used for forming connection and sealing with the pipe in the axial extrusion process; and an annular member capable of self-locking connection with the joint member; the inner surface of the annular part is designed with a flange structure which is matched with the groove structure of the joint part to form structural self-locking;
the detachable straight-through pipe joint of axial extrusion includes:
a detachable pipe sleeve joint component and a detachable light straight component;
the detachable pipe sleeve joint component consists of a detachable pipe sleeve joint body, a detachable nut, a stainless steel wire and a first extrusion ring;
the detachable light straight component consists of a detachable light straight body and a second extrusion ring;
the detachable pipe sleeve connector body is an integrated structure formed by the connector component and a pipe sleeve component matched with the detachable light straight component; the first pressing ring is constituted by the annular member; the detachable light straight body is an integrated structure formed by a light straight part matched with the detachable pipe sleeve connector body and the connector part; the second pressing ring is constituted by the annular member.
2. The axial extrusion detachable straight-through pipe joint composed of the axial extrusion type connecting pipe joint assembly according to claim 1, wherein the outer surface of the joint component is sequentially designed with a first groove (101), a first flange (102), the groove structure, a first inclined surface (106), a first plane (107) and a second plane (108); the groove structure comprises a second groove (104) and a boss (105); the first flange (102) structure extends axially along the fitting component and provides support for a compression tool to compress the annular component, the first side (103) of the first flange (102) being the termination point of the annular component; the first plane (107) transitions along the joint component axial extension to the second plane (108), the diameter of the second plane (108) being smaller than the diameter of the first plane (107).
3. The axial extrusion detachable type straight pipe joint composed of the axial extrusion type connecting pipe joint assembly according to claim 1, wherein the tooth space structure comprises a plurality of annular grooves (109) for providing material flowing space during the deformation of the extrusion ring extrusion pipe, and the annular grooves (109) have an axial distance from each other.
4. The axial squeeze detachable straight-through pipe joint of an axial squeeze type connecting pipe joint assembly according to claim 2, wherein the ring member includes an outer peripheral end surface (118);
the inner surface of the annular part comprises in sequence: a third planar surface (117), a fourth planar surface (116), a second beveled surface (115) extending axially from the fourth planar surface (116), the flange structure, a second side surface (112), and a fifth planar surface (111); the flange structure includes: a third groove (114) and a flange (113);
the diameter of the fourth plane (116) is smaller than the diameter of the first plane (107);
the diameter of the third plane (117) is smaller than the diameter of the second plane (108);
the second side (112) and the fifth flat surface (111) cooperate with a first flange (102) of the fitting component to provide support for axial compression; the second side surface (112) is an axial extrusion termination surface.
5. The axial extrusion detachable straight-through pipe joint composed of the axial extrusion type connecting pipe joint component according to claim 1, wherein a shaft shoulder matched with the detachable nut and a sealing surface for forming a sealing effect are designed on the detachable pipe sleeve joint body;
the detachable light straight body is provided with a thread matched with the detachable nut and a conical surface for forming a sealing effect.
6. The axial extrusion detachable straight-through pipe joint composed of the axial extrusion type connecting pipe joint assembly according to claim 1, wherein the inner surface of the detachable nut is designed with a fourth groove for ensuring the locking strength by matching with the stainless steel wire.
7. The axial extrusion detachable straight-through pipe joint consisting of the axial extrusion type connecting pipe joint assembly according to claim 1, wherein an inner cavity of the detachable pipe sleeve joint body is designed as a stepped hole, and a pipe positioning step is arranged at a position with a changed inner diameter; the inner cavity of the detachable light straight body is designed as a stepped hole, and the inner diameter change part is a pipe positioning step.
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| CN202011079903.5A CN112066103B (en) | 2020-10-10 | 2020-10-10 | Axial extrusion type connecting pipe joint assembly and pipe joint formed by same |
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| CN202011079903.5A CN112066103B (en) | 2020-10-10 | 2020-10-10 | Axial extrusion type connecting pipe joint assembly and pipe joint formed by same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102019131537B4 (en) * | 2019-11-21 | 2022-01-27 | Kendrion (Villingen) Gmbh | Device for pressure regulation in a fuel supply of an internal combustion engine with a common rail injection |
| CN113442092B (en) * | 2021-07-27 | 2022-08-19 | 大连长之琳科技发展有限公司 | Special tool for axial extrusion |
| CN114310180B (en) * | 2021-12-30 | 2024-01-05 | 辽宁美托科技股份有限公司 | Manufacturing and assembling method of novel 35MPa axial extrusion pipeline connecting piece for aviation |
| CN114310183A (en) * | 2021-12-31 | 2022-04-12 | 沈阳航空航天大学 | Processing method of axial extrusion type pipe joint |
| CN114704695A (en) * | 2022-02-28 | 2022-07-05 | 芜湖骏航机电科技有限公司 | Rolling connection type lip-shaped sealing joint |
| CN115435166A (en) * | 2022-08-23 | 2022-12-06 | 大连长之琳科技发展有限公司 | High-pressure self-sealing pipeline connecting joint assembly |
| CN115899399A (en) * | 2022-11-18 | 2023-04-04 | 大连长之琳科技发展有限公司 | On-site quick assembly pipeline connecting joint with axial compensation |
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| DE202006001908U1 (en) * | 2006-02-07 | 2006-04-13 | Rebersek, Vinko | Pipe connection for water installations has base component with locking groove and sliding sleeve with locking tooth which hook into one another when pressed together |
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Address after: No. 22 Fuquan North Road, Dalian Economic and Technological Development Zone, Liaoning Province, 116600 Patentee after: Dalian Changzhilin Technology Development Co.,Ltd. Country or region after: China Patentee after: Chengdu changzhilin Aviation Manufacturing Co.,Ltd. Address before: No.22 Fuquan North Road, economic and Technological Development Zone, Dalian City, Liaoning Province, 116000 Patentee before: DALIAN C&L TECHNOLOGY DEVELOPMENT Co.,Ltd. Country or region before: China Patentee before: Chengdu changzhilin Aviation Manufacturing Co.,Ltd. |
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