CN219606320U

CN219606320U - Pipeline connecting device

Info

Publication number: CN219606320U
Application number: CN202320265578.4U
Authority: CN
Inventors: 王兰; 王斐; 祁同晖; 张鹏程
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-08-29
Anticipated expiration: 2033-02-21

Abstract

The utility model relates to the technical field of engines, in particular to a pipeline connecting device. The loose piece flange is fixedly connected with the fastening flange so as to achieve the purpose of communicating the connecting pipe with the steel pipe main body, the loose piece flange is provided with a rotating hole, one end of the steel pipe main body is fixedly connected with one end of the pipe section flaring, the other end of the pipe section flaring is of a ball-segment-shaped structure, the other end of the pipe section flaring faces the fastening flange, the pipe section flaring contacts with the rotating hole in a line mode, at least part of the pipe section flaring is arranged in the rotating hole, the pipe section flaring can rotate relative to the loose piece flange, and therefore when the steel pipe main body is subjected to installation stress, the steel pipe main body can rotate relative to the loose piece flange, and the installation stress is relieved. The rotation reverse direction is determined according to the actual needs, and is not particularly limited, so that the steel pipe can be prevented from being damaged due to the long-term installation stress; the sealing gasket is arranged between the fastening flange and the flaring of the pipe section, so that the aim of sealing the fastening flange and the steel pipe assembly can be fulfilled.

Description

Pipeline connecting device

Technical Field

The utility model relates to the technical field of engines, in particular to a pipeline connecting device.

Background

In the prior art, as shown in fig. 1, a steel pipe 3 is welded with a connecting flange 2, the steel pipe 3 is perpendicular to the connecting flange 2, the angle is not adjustable, and the two connecting flanges 2 are sealed by a sealing gasket 1.

Under ideal conditions, the two steel pipes 3 are collinear, the connecting flanges 2 are parallel to each other, but when the steel pipes 3 are actually assembled, the two connecting flanges 2 are not parallel, so that installation stress is generated between the connecting flanges 2 and the steel pipes, and when severe, one side of the sealing gasket 1 cannot be tightly pressed, and leakage is generated.

In order to solve the technical problems, the prior proposal arranges a corrugated pipe section on the steel pipe 3 for releasing the installation stress; however, the corrugated pipe section has higher requirements on the processing technology and the consistency of products, and once the pipe type design is improper, the fracture risk is higher; and the corrugated pipe section has a thicker pipe diameter, so that the arrangement space is large, and the arrangement of the whole machine is not facilitated.

Therefore, a pipeline connecting device is needed to solve the above technical problems.

Disclosure of Invention

The utility model aims to provide a pipeline connecting device which can realize position rotation relative to flanges after a pipeline is subjected to installation stress, does not cause deflection between flanges connected in parallel, and reduces the fracture risk of the pipeline.

To achieve the purpose, the utility model adopts the following technical scheme:

a pipe connection device comprising:

the fastening flange is connected with a connecting pipe;

the pipeline assembly comprises a pipeline main body, a pipeline section flaring and a loose piece flange, wherein the loose piece flange is connected with the fastening flange, the loose piece flange is provided with a rotating hole, one end of the pipeline main body is fixedly connected with one end of the pipeline section flaring, the other end of the pipeline section flaring is of a spherical segment structure, the other end of the pipeline section flaring faces towards the fastening flange, the pipeline section flaring is in line contact with the rotating hole, and at least part of the pipeline section flaring can be rotatably arranged in the rotating hole;

and the sealing gasket is arranged between the fastening flange and the pipe section flaring.

As a preferable technical scheme of the above pipeline connecting device, the rotation hole is a spherical hole or a conical hole, and a large end of the rotation hole is arranged towards the fastening flange.

As a preferable technical scheme of the pipeline connecting device, the rotating hole is a sphere-shaped hole, and the diameter of a sphere where the rotating hole is located is larger than that of a sphere where the outer side wall of the sphere-shaped structure is located.

As a preferable technical scheme of the pipeline connecting device, the sealing gasket comprises a framework and a rubber layer coated on the framework.

As a preferable technical scheme of the pipeline connecting device, the sealing gasket is provided with a flat side wall attached to the fastening flange and a conical side wall attached to the inner side wall of the pipe section flaring, and lip seals are arranged on the flat side wall and the conical side wall.

As a preferable technical scheme of the above pipeline connecting device, the sealing gasket is provided with a middle hole, the middle hole is communicated with the pipe section flaring, the middle hole comprises a conical hole and a cylindrical hole connected with the conical hole, and the hole wall of the conical hole is connected with the lip seal fairing arranged on the flat side wall.

As a preferable technical scheme of the above-mentioned pipe connecting device, the gasket is provided with a positioning pin, the fastening flange is provided with a pin hole, and the positioning pin can be inserted into the pin hole.

As a preferable technical scheme of the above pipeline connecting device, the fastening flange is fixedly connected with the loose piece flange through a cushion block and a fastening bolt, wherein one of the fastening flange and the loose piece flange is provided with a through hole, the other one of the fastening flange and the loose piece flange is provided with a threaded hole, the fastening bolt passes through the through hole to enter the threaded hole to be in threaded connection with the fastening flange or the loose piece flange, and the cushion block is abutted against the head of the fastening bolt.

As a preferable mode of the above-mentioned pipe connection device, the pad includes a metal portion and a rubber portion, and the rubber portion is disposed between the metal portion and the head portion of the fastening bolt.

As a preferable technical scheme of the pipeline connecting device, the pipeline main body is welded with the pipe section flaring.

The utility model has the beneficial effects that:

the loose piece flange is fixedly connected with the fastening flange so as to achieve the purpose of communicating the connecting pipe with the pipeline main body, the loose piece flange is provided with a rotating hole, one end of the pipeline main body is fixedly connected with one end of the pipe section flaring, the other end of the pipe section flaring is of a spherical-segment structure, the other end of the pipe section flaring faces the fastening flange, the pipe section flaring contacts with the rotating hole, at least part of the pipe section flaring is arranged in the rotating hole, the pipe section flaring can rotate relative to the loose piece flange, and therefore when the pipeline main body is subjected to installation stress, the pipeline main body can rotate relative to the loose piece flange, the direction is determined according to actual needs, the direction is not limited, and the pipeline can be prevented from being damaged due to the installation stress for a long time; because the flaring of the pipe section rotates relative to the loose flange, after the loose flange and the fastening flange are subjected to installation stress, no relative linear movement exists between the loose flange and the fastening flange, the sealing gasket is arranged between the fastening flange and the flaring of the pipe section, and the sealing gasket can be tightly pressed by the fastening flange and the pipeline assembly so as to realize the sealing purpose.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic view of a pipe connection device according to the related art;

fig. 2 is a schematic structural diagram of a pipe connection device according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of a pipe connection device according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a structure of a fastening flange and a gasket according to an embodiment of the present utility model after the fastening flange is connected;

FIG. 5 is a schematic view of a first view of a gasket according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a second view of a gasket according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a fastening flange connected with a connecting pipe according to an embodiment of the present utility model.

In the figure:

1. a sealing gasket; 2. a connecting flange; 3. a pipeline; 4. a fastening flange; 41. a pin hole; 5. a connecting pipe; 6. a pipeline main body; 7. a loose piece flange; 71. a rotation hole; 8. a sealing gasket; 81. a skeleton; 82. a rubber layer; 83. a middle hole; 831. taper holes; 832. a cylindrical bore; 84. lip sealing; 85. a positioning pin; 9. flaring the pipe section; 10. a cushion block; 101. a metal part; 102. a rubber part; 11. and (5) fastening a bolt.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The embodiment of the utility model provides a pipeline connecting device which can enable a pipeline to rotate relative to a flange, prevent the pipeline and the flange from being damaged due to installation stress, and avoid the reduction of sealing effect caused by the change of the position of the flange.

As shown in fig. 2 and 3, the pipe connection device comprises a fastening flange 4, a pipe assembly and a sealing gasket 8, wherein the fastening flange 4 is connected with a connecting pipe 5; the pipeline assembly comprises a pipeline main body 6, a pipeline section flaring 9 and a loose piece flange 7, wherein the loose piece flange 7 is connected with the fastening flange 4 so as to achieve the purpose of communicating the connecting pipe 5 with the pipeline main body 6, the loose piece flange 7 is provided with a rotating hole 71, one end of the pipeline main body 6 is fixedly connected with one end of the pipeline section flaring 9, the other end of the pipeline section flaring 9 is of a spherical segment structure, the other end of the pipeline section flaring 9 faces the fastening flange 4, the outer side wall of the pipeline section flaring 9 is in line contact with the wall of the rotating hole 71, the pipeline section flaring 9 is at least partially arranged in the rotating hole 71, and the pipeline section flaring 9 can rotate relative to the loose piece flange 7, so that when the pipeline main body 6 is subjected to installation stress, the pipeline main body 6 can rotate relative to the loose piece flange 7, the direction is determined according to actual needs, and the direction is not limited, so that the pipeline can be prevented from being damaged due to the installation stress for a long time; because the pipe section flaring 9 can rotate relative to the loose piece flange 7, after receiving installation stress, the loose piece flange 7 and the fastening flange 4 do not move linearly relative to each other, the sealing gasket 8 is arranged between the fastening flange 4 and the pipe section flaring 9, and the sealing gasket 8 can be tightly pressed by the fastening flange 4 and the pipeline assembly so as to realize the sealing purpose.

It should be noted that, the pipe main body 6 is fixedly connected with the pipe section flaring 9, and may be specifically welded. The welding can reduce the use of assembly parts, is convenient for processing, improves assembly efficiency. Of course, in other embodiments, the pipe body 6 is spliced with the pipe section flaring 9, so that the processing technology can be reduced, and the length of time can be reduced.

Alternatively, in some embodiments, the rotation hole 71 is a scalloped or tapered hole, and the large end of the rotation hole 71 is disposed toward the fastening flange 4 to facilitate communication between the pipe segment flare 8 and the fastening flange 4. The rotation hole 71 is a scalloped or tapered hole to ensure that the rotation hole 71 is in line contact with the pipe segment flare 9 and the shape of the rotation hole 71 does not limit rotation of the pipe segment flare 9 relative to the loose piece flange 7.

Illustratively, when the rotation hole 71 is a segment hole, the diameter of the sphere where the rotation hole 71 is located is larger than the diameter of the sphere where the outer side wall of the segment structure is located, so that the rotation of the pipe section flaring 9 relative to the loose piece flange 7 can be ensured.

For example, with continued reference to fig. 3, the fastening flange 4 is fixedly connected with the loose-piece flange 7 through the cushion block 10 and the fastening bolts 11, the fastening bolts 11 are arranged in a one-to-one correspondence with the cushion block 10, in this embodiment, the number of the fastening bolts 11 is two, in other embodiments, the number of the fastening bolts 11 may be three or four, and the number of the fastening bolts 11 may be determined according to the sizes of the fastening flange 4 and the loose-piece flange 7. Of course, in other embodiments, the fastening flange 4 and the loose flange 7 may also be welded. In both the fastening flange 4 and the loose flange 7, one of them is provided with a through hole, the other is provided with a screw hole, and the fastening bolt 11 passes through the through hole into the screw hole to be screwed with the fastening flange 4 or the loose flange 7, and the head of the fastening bolt 11 is abutted by the spacer 10. The spacer 10 can prevent the loose flange 7 or the fastening flange 4 from being crushed by the direct contact of the fastening bolt 11 and the loose flange 7 or the fastening flange 4, and improve the connection reliability of the fastening bolt 11.

The sealing gasket 8, the fastening bolt 11 and the cushion block 10 are matched for application, so that decoupling of connection of the pipeline assembly and the fastening flange 4 can be realized, and NVH performance of the pipeline assembly is improved.

The fastening bolt 11 is provided with a shaft shoulder, and the arrangement of the shaft shoulder can play a role in limiting the whole fastening bolt 11. The length of the screw of the fastening bolt 11 is determined by the thickness of the loose flange 7, the design compression thickness of the gasket 8 and the design compression thickness of the spacer 10.

Illustratively, the spacer 10 includes a metal portion 101 and a rubber portion 102, the rubber portion 102 being disposed between the metal portion 101 and the head of the fastening bolt 11. The metal part 101 provides support for the rubber part 102, and the rubber part 102 can absorb shock to avoid vibration transmission.

In some embodiments, as shown in fig. 3 to 6, the gasket 8 includes a skeleton 81 and a rubber layer 82 coated on the skeleton 81. The provision of the skeleton 81 can enhance the rigidity of the gasket 8 while providing support for the rubber layer 82. The rubber layer 82 is extruded under the combined action of the fastening flange 4 and the loose piece flange 7, and the rubber layer 82 can deform so as to ensure that the fastening flange 4 and the loose piece flange 7 are always in a fitting state with the rubber layer 82, and further ensure the sealing effect.

In some embodiments, the gasket 8 has a flat side wall that engages the fastening flange 4 and a tapered side wall that engages the inner side wall of the tube section flare 9, both of which are provided with lip seals 84. The lip seal 84 is arranged to ensure that the lip seal is always in a fit state with the fastening flange 4 and the loose piece flange 7, so that the sealing effect is ensured.

It will be appreciated that the cross-section of the gasket 8 is generally conical in configuration such that the gasket 8 accommodates the shape of both the pipe segment flare 9 and the fastening flange 4, maintaining a seal between both the pipe segment flare 9 and the fastening flange 4.

The flat side wall is provided with two or more lips 84, and the tapered side wall is also provided with two or more lips 84. For example, the flat side wall is provided with two lips 84 and the tapered side wall is provided with three lips 84.

To reduce the manufacturing cost of the gasket 8, in some embodiments, the gasket 8 has a middle hole 83, the middle hole 83 communicates with the pipe section flare 9, the middle hole 83 includes a tapered hole 831 and a cylindrical hole 832 connected to the tapered hole 831, and the hole wall of the tapered hole 831 is in smooth connection with a lip seal 84 provided at the lowest side of the flat side wall. Meanwhile, the tapered holes 831 can also prevent the sealing gasket 8 from being deformed in the direction of the central hole 83 after being extruded to reduce the aperture of the central hole 83, so that fluid can be prevented from being blocked when passing through the central hole 83.

During assembly, the gasket 8 needs to be placed between the fastening flange 4 and the loose-piece flange 7, and if the gasket 8 is not limited by other limiting structures, the gasket 8 may be separated during assembly, for this reason, in some embodiments, referring to fig. 6 and 7, the gasket 8 is provided with a positioning pin 85, the fastening flange 4 is provided with a pin hole 41, and the positioning pin 85 can be inserted into the pin hole 41. Like this, when the assembly, sealed pad 8 can realize the purpose of location under the effect of locating pin 85 and pinhole 41 two, can not break away from with fastening flange 4 in the assembly process, does benefit to the installation, has improved installation effectiveness.

Of course, in other embodiments, the gasket 8 may be positioned on the fastening flange 4 by means of adhesive, so as to ensure that the gasket 8 does not separate from the fastening flange 4 during installation.

Furthermore, the foregoing description of the preferred embodiments and the principles of the utility model is provided herein. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims

1. The pipeline connecting device is characterized by comprising:

a fastening flange (4), wherein the fastening flange (4) is connected with a connecting pipe (5);

the pipeline assembly comprises a pipeline main body (6), a pipeline section flaring (9) and a loose piece flange (7), wherein the loose piece flange (7) is fixedly connected with the fastening flange (4), the loose piece flange (7) is provided with a rotating hole (71), one end of the pipeline main body (6) is fixedly connected with one end of the pipeline section flaring (9), the other end of the pipeline section flaring (9) is of a spherical segment structure, the other end of the pipeline section flaring (9) faces the fastening flange (4), the outer side wall of the pipeline section flaring (9) is in line contact with the hole wall of the rotating hole (71), and at least part of the pipeline section flaring (9) can be rotatably arranged in the rotating hole (71);

and the sealing gasket (8) is arranged between the fastening flange (4) and the pipe section flaring (9).

2. A pipe connection according to claim 1, characterized in that the turning hole (71) is a segment-shaped hole or a conical hole, the large end of the turning hole (71) being arranged towards the fastening flange (4).

3. The pipeline connecting device according to claim 1, wherein the rotating hole (71) is a sphere-shaped hole, and the diameter of a sphere where the rotating hole (71) is located is larger than the diameter of a sphere where the outer side wall of the sphere-shaped structure is located.

4. The pipe connection device according to claim 1, characterized in that the gasket (8) comprises a skeleton (81) and a rubber layer (82) coating the skeleton (81).

5. A pipe connection according to claim 1, characterized in that the sealing gasket (8) has a flat side wall which adjoins the fastening flange (4) and a conical side wall which adjoins the inner side wall of the pipe section flare (9), both of which are provided with lip seals (84).

6. The pipe connection according to claim 5, characterized in that the sealing gasket (8) has a middle hole (83), the middle hole (83) being in communication with the pipe section flare (9), the middle hole (83) comprising a conical hole (831) and a cylindrical hole (832) connected to the conical hole (831), the hole wall of the conical hole (831) being in smooth connection with the lip seal (84) provided on the flat side wall.

7. A pipe connection according to claim 1, characterized in that the sealing gasket (8) is provided with a locating pin (85), the fastening flange (4) is provided with a pin hole (41), and the locating pin (85) can be inserted into the pin hole (41).

8. A pipe connection according to claim 1, characterized in that the fastening flange (4) is fixedly connected with the loose-piece flange (7) by means of a spacer block (10) and fastening bolts (11), one of the fastening flange (4) and the loose-piece flange (7) is provided with a through hole, the other one is provided with a threaded hole, the fastening bolts (11) penetrate through the through hole and enter the threaded hole to be in threaded connection with the fastening flange (4) or the loose-piece flange (7), and the spacer block (10) is abutted against the head of the fastening bolts (11).

9. The pipe connection device according to claim 8, characterized in that the spacer (10) comprises a metal part (101) and a rubber part (102), the rubber part (102) being arranged between the metal part (101) and the head of the fastening bolt (11).

10. A pipe connection according to claim 1, characterized in that the pipe body (6) is welded to the pipe section flare (9).