CN112576829A

CN112576829A - Pipeline joint assembly

Info

Publication number: CN112576829A
Application number: CN201910867444.8A
Authority: CN
Inventors: 王美; 李理; 董军启
Original assignee: Hangzhou Sanhua Research Institute Co Ltd
Current assignee: Hangzhou Sanhua Research Institute Co Ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2021-03-30

Abstract

A pipe joint assembly includes a first connector, a second connector, a seal, and a fastener. The first connector includes a first channel and the second connector includes a second channel. The fastener fixes the first connecting piece and the second connecting piece relatively. The first connecting piece is provided with a first end portion and a first joint portion protruding and extending from the first end portion. The first channel axially penetrates through the first joint part, and the first joint part is provided with a first end face facing the second connecting piece. The second connecting piece includes with the second tip that first tip is relative, certainly recess that the second tip is sunken to form and being located the second terminal surface of recess bottom, first joint portion at least part accept in the recess, the second passageway axial runs through the recess. The sealing element is abutted between the first end face and the second end face of the first joint part, the sealing element comprises an annular assembly and a graphite gasket, and the graphite gasket is accommodated in the annular assembly.

Description

Pipeline joint assembly

Technical Field

The application relates to the field of pipeline connection, in particular to a pipeline joint assembly.

Background

The CO2 is applied to the automobile air conditioner as a novel refrigerant, and the working pressure of the refrigerant is about 10 times higher than that of the conventional refrigerant R134a due to the transcritical circulation of the CO2 refrigerant. Therefore, a pipeline connecting structure capable of keeping good sealing performance under high-pressure and high-temperature environments is needed to meet the requirement of sealing performance of connecting pipelines of an automobile air conditioning system.

In the correlation technique, adopt the graphite gasket to seal, because the shortcoming of material, the gasket that leads to materials such as graphite to make can not with refrigerant direct contact, need put in the recess, the recess that holds the graphite gasket and connecting piece structure as an organic whole. The graphite gasket is directly filled in the groove, and is extruded to the inseparable state when the assembly, leads to the graphite gasket to be difficult to take out and renew after using, probably needs to change whole pipeline connecting piece during the maintenance, or smashes the graphite gasket with sharp thing to pieces and takes out, so, constructor operates comparatively inconveniently.

Therefore, there is a need for a new line connector assembly to solve the above problems.

Disclosure of Invention

An object of the application is to provide a pipeline joint assembly of conveniently changing sealing member.

In order to achieve the purpose, the following technical scheme is adopted in the application: a pipeline joint assembly comprises a first connecting piece, a second connecting piece, a sealing piece and a fastening piece, wherein the first connecting piece comprises a first channel, the second connecting piece comprises a second channel, the fastening piece relatively fixes the first connecting piece and the second connecting piece, the first connecting piece is provided with a first end part and a first joint part which protrudes and extends from the first end part, the first channel axially penetrates through the first joint part, and the first joint part is provided with a first end surface facing the second connecting piece; the second connecting piece include with the relative second tip of first tip, certainly recess that the second tip is sunken to be formed and be located the second terminal surface of recess bottom, first joint portion at least part accept in the recess, second passageway axial runs through the recess, the sealing member butt in first terminal surface with between the second terminal surface, the sealing member includes annular assembly and graphite gasket, the graphite gasket accept in annular assembly.

As a further improved technical solution of the present invention, the annular assembly includes a first annular member, a second annular member, and an accommodating space, the accommodating space is located between the first annular member and the second annular member, the graphite gasket is accommodated in the accommodating space, and an axial height of the graphite gasket is less than or equal to an axial height of the second annular member and the first annular member.

As a further improved technical solution of the present invention, the annular assembly includes a first annular member, a second annular member, a connecting portion, and an accommodating space, the connecting portion connects one end of the first annular member and one end of the second annular member, the accommodating space is formed between the first annular member, the second annular member, and the connecting portion, the graphite gasket is accommodated in the accommodating space, and an axial height of the graphite gasket is less than or equal to an axial height of the second annular member and an axial height of the first annular member.

As a further improved technical solution of the present invention, the first annular member and the second annular member are metal annular members, axial cross-sectional shapes of the first annular member and the second annular member are substantially the same, and an axial cross-section of the first annular member and/or the second annular member is one of a V shape, an arc shape, and a special shape.

As a further improved technical scheme, the sealing device further comprises an elastic piece for circumferentially limiting the sealing piece, the elastic piece is provided with an annular wall extending axially and a cavity positioned in the annular wall, and the sealing piece is accommodated in the cavity.

As a further improved technical solution of the present invention, the elastic member further includes an inclined wall extending from one end of the annular wall away from the first connecting member to the cavity in an inclined manner, and the sealing member is circumferentially limited in the annular wall and is at least partially supported by the inclined wall in an axial direction.

As a further improved aspect of the present invention, a projection of the first wall surface of the seal member in contact with the first end surface in the axial direction falls entirely within the first end surface, and a projection of the second wall surface of the seal member in contact with the second end surface in the axial direction falls entirely within the second end surface.

As a further improved technical scheme, the sealing element is provided with a through hole penetrating through the first annular element, the through hole is communicated with the first channel and the second channel, the projection of the first channel along the axial direction completely falls into a plane where any circumferential section of the through hole is located, and the projection of the second channel along the axial direction completely falls into a plane where any circumferential section of the through hole is located.

As a further improved technical solution of the present invention, the groove is provided with an accommodating cavity for accommodating the first joint portion, a bottom wall located at the bottom of the accommodating cavity, and a boss protruding upward from the bottom wall, the boss is annularly disposed on the periphery of the second channel, and an end face of the boss is the second end face.

As a further improved technical solution of the present invention, the groove further includes a first groove located between an inner wall of the receiving cavity and an outer wall of the boss, and the inclined wall is at least partially received in the first groove.

The sealing piece that the pipeline joint subassembly of this application set up accepts the structural style in annular assembly for the graphite gasket, and when taking out annular assembly, the graphite gasket can be taken out together to the degree of difficulty that follow-up graphite gasket assembly or taken out has been reduced.

Drawings

FIG. 1 is a perspective view of a line connector assembly according to the present application;

FIG. 2 is a partially exploded schematic view of a pipe coupling assembly according to the present application;

FIG. 3 is another perspective view of the pipe joint assembly of FIG. 2;

FIG. 4 is a partially exploded, partially schematic view of the pipe joint assembly of FIG. 2, further exploded;

FIG. 5 is another perspective view of the pipe joint assembly of FIG. 4;

FIG. 6 is a partially exploded, partially schematic view of the pipe joint assembly of FIG. 4, further exploded;

FIG. 7 is another perspective view of the pipe joint assembly of FIG. 6;

FIG. 8 is a cross-sectional schematic view of the line connector assembly taken axially along line A-A of FIG. 1;

FIG. 9 is a cross-sectional view of the second connector of FIG. 8;

FIG. 10 is an exploded perspective view of the seal;

FIG. 11 is a schematic cross-sectional view of one embodiment seal;

FIG. 12 is a cross-sectional schematic view of another embodiment seal.

Reference numerals:

1-a first connector; 10-a first channel; 11-a first end portion; 12-a first joint part; 121-a first end face;

2-a second connector; 20-a second channel; 21-a second end; 23-connecting a pipe part; 230-a housing chamber; 231-a second end face; 232-bottom wall; 233-boss; 234-inner wall; 235-a first slot;

3-a seal; 30-a through hole; 31-a first annular member; 32-graphite gaskets; 33-a second ring member; 34-a first wall; 35-a second wall; 39-a connecting part; 36-a housing space;

4-a fastener;

5-an elastic member; 50-a cavity; 51-a ring wall; 52-inclined walls; 53-plate section.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. Exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments can be supplemented or combined with each other without conflict.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Referring to fig. 1 to 11, a pipe joint assembly includes a first connector 1, a second connector 2, a sealing member 3 and a fastening member 4; wherein, the first connecting piece 1 is provided with a first channel 10 communicated with a first connecting pipe (not shown), the second connecting piece 2 is provided with a second channel 20 communicated with a second connecting pipe (not shown), and the inner diameter of one end of the first channel 10 is expanded to form a step hole (not numbered) so as to be convenient for positioning the first connecting pipe when the first connecting pipe is inserted. The first connecting pipe can be sealingly fastened to the first connecting part 1, for example by screwing, riveting, gluing, etc. The second connecting piece 2 is arranged opposite to the first connecting piece 1 and is relatively fixed through the fastening piece 4. Optionally, in this embodiment, the fastening element 4 is a bolt and a nut (not shown) for fitting a lock bolt.

The first connecting member 1 is provided with a first end portion 11, a first joint portion 12 protruding from the first end portion 11, and a first end surface 121 located at a free end of the joint portion 12. The first passage 10 extends axially through the first joint part 12. Optionally, the first joint part 12 is cylindrical and surrounds the outer periphery of the first passage 10.

The second connecting piece 2 is provided with a second end part 21 opposite to the first end part 11, a groove 23 formed by sinking the second end part 21, a second end surface 231 positioned at the bottom of the groove 23 and a second channel 20 axially penetrating through the groove 23. The second end surface 231 is disposed opposite to the first end surface 121 to clamp the sealing member 3. Optionally, the inner diameter of the first channel 10 is equal to the inner diameter of the second channel 20.

The groove 23 is provided with a receiving cavity 230 for receiving the first joint part 12, and a bottom wall 232 at the bottom of the receiving cavity 230.

Optionally, the groove 23 is further provided with a boss 233 protruding and extending upward from the bottom wall 232 and a first groove 235. The boss 233 is disposed around the second channel 20, and an end surface of the top of the boss 233 is the second end surface 231. The first groove 235 is located between the inner wall 234 of the receiving cavity 230 and the outer wall of the boss 231. Of course, in other embodiments, if the second connector 2 is not provided with the boss 231, the wall surface of the bottom wall 232 of the accommodating cavity 230 is the second end surface 231.

Fig. 9 and 10 show a sealing member 3 according to an embodiment of the present application. The seal 3 comprises an annular assembly and a graphite gasket 32 housed within the annular assembly. The annular assembly comprises a first annular piece 31 made of metal, a second annular piece 33 surrounding the periphery of the first annular piece 31, a through hole 30 penetrating through the first annular piece 31 in the middle, and a containing space 36 between the first annular piece 31 and the second annular piece 33. The first connecting piece 1 and the second connecting piece 2 are communicated through the through hole 30. The graphite gasket 32 is accommodated in the accommodating space 36. In the present embodiment, the axial height of the graphite gasket 32 is less than or equal to the axial height of the second annular member 33 and the first annular member 31. The through hole 30 communicates the first channel 10 with the second channel 20, the projection of the first channel 10 along the axial direction all falls into the plane where any circumferential section of the through hole 30 is located, and the projection of the second channel 20 along the axial direction all falls into the plane where any circumferential section of the through hole 30 is located. In the present embodiment, the inner diameter of any radial section of the through hole 30 is greater than or equal to the inner diameter of the first passage 10.

The graphite gasket 32 is accommodated between the second ring member 33 and the first ring member 31 so as to achieve radial limitation through the mutual matching of the second ring member 33 and the first ring member 31. So set up, it is spacing to graphite gasket 32 through first loop forming element 31, prevent that the piece when graphite gasket 32 is extruded from falling into through-hole 30 and getting into in first passageway 10 or the second passageway 20 to the risk of polluting refrigerant in first passageway 10, the second passageway 20 has been reduced. Meanwhile, the graphite gasket 32 is limited inside and outside the first annular part 31 and the second annular part 32 which are made of metal materials, so that the hidden danger that the graphite gasket 32 is crushed when the first connecting piece 1 and the second connecting piece 2 are assembled through the fastening piece 4 can be reduced.

In the present embodiment, the second ring member 33 has substantially the same radial cross section as the first ring member 31, and has a V-shaped configuration. In other embodiments, the shape of the arc or the irregular structure is provided. By the arrangement, the first ring piece 31 and the second ring piece 33 are high in resilience, and the sealing performance of the sealing element 3 can be improved.

Please refer to fig. 9 and 11, which illustrate a sealing member 3 according to another embodiment of the present application. In the present embodiment, the sealing member 3 includes a first ring member 31, a second ring member 33, a connecting portion 39 connecting the first ring member 31 and the second ring member 33, and an accommodating space 36 formed between the first ring member 31, the second ring member 33, and the connecting portion 39, one side edge of the connecting portion 39 is connected to a bottom end of the first ring member 31, the other side edge of the connecting portion 39 is connected to a bottom end of the second ring member 33, the accommodating space 36 is located between the first ring member 31, the second ring member 33, and the connecting portion 35, and the graphite gasket 32 is accommodated in the accommodating space 36. The first ring member 31, the second ring member 33 and the connecting portion 35 may be formed by integral molding or assembly.

Further, in other embodiments of the present application, an annular member may be disposed between the top end of the first annular member 31 and the top end of the second annular member 33, and the annular member may movably block the accommodating space 36 and at least partially accommodate in the accommodating space 36, so as to reduce the risk of the diffusion of the debris of the graphite gasket 32 during the pressing process.

In the present application, the projection of the first wall surface 34 abutted by the sealing member 3 and the first end surface 121 along the axial direction all falls into the first end surface 121, and the projection of the second wall surface 35 abutted by the sealing member 3 and the second end surface 231 along the axial direction all falls into the second end surface 231. Meanwhile, the inner diameter of the through hole 30 is greater than or equal to the inner diameter of the first passage 10, and the inner diameter of the through hole 30 is greater than or equal to the inner diameter of the second passage 20. So set up, this application pipeline coupling assembling's sealing member 3 can be applied to the pipeline coupling assembling of unidimensional lumen, need not to change, change the not unidimensional sealing member 3 of preparation to sealing member 3's commonality has been improved.

The pipe connection assembly further comprises an elastic member 5 for accommodating the sealing member 3.

The elastic member 5 is provided with an annular wall 51 extending axially, a cavity 50 located in the annular wall 51, an inclined wall 52 extending obliquely from the bottom end of the annular wall 51 to the cavity 50, and a flat plate portion 53 vertically connecting the annular wall 51. The flat plate portion 53 is spaced between the first end portion 11 of the first link 1 and the second end portion 21 of the second link 2. With the arrangement, the flat plate part 53 fills the gap between the first connecting piece 1 and the second connecting piece 2, so that dust is prevented from entering the gap to influence the performance. The sealing element 3 is accommodated in the cavity 50, and the inclined wall 52 is accommodated in the first groove 235 and upwardly supports the sealing element 3. So set up, it is convenient to take out and change sealing member 3. The inclined wall 52 is configured to match the outer peripheral wall surface of the seal member 1 in a V shape, a circular arc shape, or a special shape, thereby achieving positioning of the seal member 3.

Optionally, the flat plate portion 53 is provided with a through hole (not shown), and when the first connecting member 1 is assembled with the second connecting member 2, a fastening member passes through the first connecting member 1, the through hole, and the second connecting member 2 to complete fastening connection.

When the first connecting piece 1 and the second connecting piece 2 are assembled in place, the first joint part 12 is sleeved in the cavity 50 of the elastic piece 5, the first end surface 121 abuts against the first wall surface 34 of the sealing piece 3, the first joint part 12 and the annular wall 51 of the elastic piece 5 are both accommodated in the accommodating cavity 230 of the groove 23, the sealing piece 3 is accommodated in the cavity 50, and the second wall surface 35 of the sealing piece 3 is abutted upwards by the inclined wall 52 and the second end surface 231.

The pipeline joint assembly of this application has reduced the fitting surface between first connecting piece 1 and the second connecting piece 2 through with the direct butt of sealing member 3 between the first terminal surface 121 of first connecting piece 1 and the second terminal surface 231 of second connecting piece 2 to the dead hidden danger of card between first connecting piece 1 and the second connecting piece 2 has been reduced.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. The pipeline joint assembly is characterized by comprising a first connecting piece (1), a second connecting piece (2), a sealing piece (3) and a fastening piece (4), wherein the first connecting piece (1) comprises a first channel (10), the second connecting piece (2) comprises a second channel (20), the fastening piece (4) fixes the first connecting piece (1) and the second connecting piece (2) relatively, the first connecting piece (1) is provided with a first end part (11) and a first joint part (12) which protrudes and extends from the first end part (11), the first channel (10) axially penetrates through the first joint part (12), and the first joint part (12) is provided with a first end face (121) facing the second connecting piece (2); the second connecting piece (2) include with second tip (21) that first tip (11) is relative, certainly recess (23) that second tip (21) are sunken to form and lie in second terminal surface (231) of recess (23) bottom, first joint portion (12) at least part accept in recess (23), second passageway (20) axial runs through recess (23), sealing member (3) butt in first terminal surface (121) with between second terminal surface (231), sealing member (3) include annular component and graphite gasket (32), graphite gasket (32) accept in the annular component.

2. The pipe coupling assembly of claim 1, wherein the annular assembly comprises a first annular member (31), a second annular member (33), and a receiving space (36), wherein the receiving space (36) is located between the first annular member (31) and the second annular member (33), wherein the graphite gasket (32) is received in the receiving space (36), and wherein an axial height of the graphite gasket (32) is less than or equal to an axial height of the second annular member (33) and the first annular member (31).

3. The pipe coupling assembly of claim 1, wherein the annular assembly comprises a first annular member (31), a second annular member (33), a connecting portion (35), and a receiving space (36), wherein the connecting portion (39) connects one end of the first annular member (31) and one end of the second annular member (33), wherein the receiving space (36) is formed between the first annular member (31), the second annular member (33), and the connecting portion (35), wherein the graphite gasket (32) is received in the receiving space (36), and wherein an axial height of the graphite gasket (32) is less than or equal to an axial height of the second annular member (33) and the first annular member (31).

4. A pipe joint assembly according to any one of claims 2 or 3, wherein the first annular member (31) and the second annular member (33) are metallic annular members, and the first annular member (31) and the second annular member (33) have substantially the same axial cross-sectional shape, and the axial cross-section of the first annular member (31) and/or the second annular member (33) is one of V-shaped, circular arc-shaped and irregular-shaped.

5. A pipe coupling assembly according to any one of claims 1 to 3, further comprising a resilient member (5) circumferentially retaining said sealing member (3), said resilient member (5) having an axially extending annular wall (51) and a cavity (50) within said annular wall (51), said sealing member (3) being received in said cavity (50).

6. A pipe coupling assembly according to claim 5, wherein the resilient member (5) further comprises an inclined wall (52) extending obliquely into the chamber (50) from an end of the annular wall (51) remote from the first connection member (1), the sealing member (3) being circumferentially confined within the annular wall (51) and being axially carried at least partially by the inclined wall (52).

7. A pipe joint assembly according to claim 1, wherein the projection in the axial direction of the first wall surface (34) with which the seal (3) abuts the first end surface (121) falls entirely within the first end surface (121), and the projection in the axial direction of the second wall surface (35) with which the seal (3) abuts the second end surface (231) falls entirely within the second end surface (231).

8. Pipeline joint assembly according to claim 7, characterized in that the sealing element (3) is provided with a through hole (30) passing through the first annular element (31), the through hole (30) communicating the first passage (10) with the second passage (20), the projection of the first passage (10) in the axial direction all falling in the plane of any circumferential section of the through hole (30), the projection of the second passage (20) in the axial direction all falling in the plane of any circumferential section of the through hole (30).

9. The pipe joint assembly according to claim 1, wherein the groove (23) is provided with a receiving cavity (230) for receiving the first joint part (12), a bottom wall (232) at the bottom of the receiving cavity (230), and a boss (233) protruding upwards from the bottom wall (232), the boss (233) is arranged around the outer periphery of the second channel (20), and the end surface of the boss (233) is the second end surface (231).

10. The line connector assembly of claim 6, wherein the recess (23) further comprises a first groove (235) between an inner wall (234) of the receiving cavity (230) and an outer wall of the boss (233), the angled wall (52) being at least partially received in the first groove (235).