CN210702150U

CN210702150U - Pipeline flaring device

Info

Publication number: CN210702150U
Application number: CN201921598989.5U
Authority: CN
Inventors: 李增亮; 李嘉诚; 刘显骥; 刘笑笑
Original assignee: China University of Petroleum East China
Current assignee: China University of Petroleum East China
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-06-09
Anticipated expiration: 2029-09-25

Abstract

The utility model relates to an expansion tool, especially a pipeline flaring ware belongs to hardware and tools technical field. The transition sleeve is spirally installed on the central shaft, the outer wall of the transition sleeve is in threaded connection with the inner wall of the cone sleeve, the outer wall of the cone sleeve is in threaded connection with the inner wall of the cone, the cone sleeve is fixedly connected with the large end side wall of the cone, and the transition sleeve is connected with the movable support through a fixing device. Has the advantages that: the fixing device of the flaring device is used for fixing the pipeline instead of the traditional external fixing of the pipeline, so that the fixing device is convenient to install; the cone for extruding the pipeline mouth is in a conical shape, the maximum diameter of the large end of the cone is larger than that of the small end of the cone, and the diameter of the large end of the cone gradually transits to that of the small end of the cone, so that the pipeline mouths with different diameters can be extruded, and the cone is suitable for pipelines with different diameters.

Description

Pipeline flaring device

Technical Field

The utility model relates to an expansion tool, especially a pipeline flaring ware belongs to hardware and tools technical field.

Background

The pipe flaring device is a device for extruding and expanding one end or two ends of a pipe, and the increase of the diameter of the pipe opening is convenient for subsequent butt joint and expansion of the pipe or mutual connection between the pipes. When the existing flaring device flares, a specific pipeline fixing device is often required to be clamped outside a pipeline, but sometimes the pipeline is buried underground, so that the fixing of the fixing device is inconvenient, and the flaring work of the pipeline by using a large-sized pipeline flaring device is also inconvenient; in addition, when the pipelines with different diameters are flared, the pipeline flaring devices of different models are required to be used for flaring operation, and the pipeline flaring devices are relatively troublesome to replace and high in cost. Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a flaring device that is convenient for fixing pipes and is suitable for pipes with different diameters.

SUMMERY OF THE UTILITY MODEL

In view of this, the technical problem to be solved by the present invention is: how to provide a flaring device which is convenient for pipeline fixing and is suitable for pipelines with different diameters.

In order to achieve the above object, the utility model provides a pipeline flaring device, be in including center pin, setting the rotation handle, the spiral of center pin one end are installed epaxial movable support, spiral of center are installed epaxial transition sleeve pipe in the center, the sheathed tube outer wall of transition passes through threaded connection with the sheathed tube inner wall of cone, the sheathed tube outer wall of cone passes through threaded connection with the cone inner wall, the center pin the transition sleeve pipe the cone sleeve pipe with the cone is nested layer upon layer from inside to outside, the cone sleeve pipe with the big end lateral wall fixed connection of cone, the transition sleeve pipe with movable support passes through fixing device and connects, fixing device includes four fixed parts, and the contained angle between two adjacent fixed parts is 90, the fixed part include first connecting rod, with two third connecting rods of first cylindric lock swing joint of first connecting rod, two, The first connecting rod is movably connected with the movable support through a first cylindrical pin, the two third connecting rods are movably connected with the transition sleeve through second cylindrical pins, and the second connecting rod is movably connected with the two third connecting rods through fourth cylindrical pins.

Preferably, the first connecting rod and the two third connecting rods are equal in shape and size, the center position of the first connecting rod is movably connected with the center positions of the two third connecting rods through the first cylindrical pin, the distance between the two third connecting rods is equal to the thickness of the second connecting rod in the horizontal direction, and the thickness of the second connecting rod in the horizontal direction is larger than that of the first connecting rod in the horizontal direction.

Preferably, the second connecting rod includes the second connecting rod main part, sets up the second connecting rod recess of terminal surface under the second connecting rod main part, runs through the second connecting rod main part and with the spout that the second connecting rod recess is linked together, the one end of first connecting rod is inserted the second connecting rod recess, the cylindrical middle part of slip with first connecting rod fixed connection, the cylindrical both ends of slip are inserted the spout just can slide in the spout, the thickness of first connecting rod in the horizontal direction with the width of second connecting rod recess in the horizontal direction equals.

Preferably, the flaring device further comprises a fixing sleeve, the fixing sleeve is mounted on the transition sleeve, and the fixing sleeve is made of hard wear-resistant rubber.

Preferably, the rotating handle comprises a rotating handle connecting part and four handheld parts which are fixedly connected to the outer wall of the rotating handle connecting part and are circumferentially and uniformly distributed, and one end of the rotating handle connecting part is provided with an inner cross spline, and the other end of the rotating handle connecting part is closed.

Preferably, the central shaft comprises a short thread section, a connecting section fixedly connected with the short thread section, a long thread section fixedly connected with the connecting section, and an outer cross spline fixedly connected with the long thread section, the outer cross spline is matched with the inner cross spline, the connecting section is a cylindrical section, and the thread turning directions of the short thread section and the long thread section are opposite.

Preferably, the transition sleeve pipe include first optical axis, with first optical axis fixed connection's transition sleeve pipe screw thread section, with transition sleeve pipe screw thread section fixed connection's second optical axis, the transition sleeve pipe connecting portion of four equipartitions of outer wall fixed connection of second optical axis, set up on the transition sleeve pipe with long screw thread section complex internal thread, set up fixed cover on the first optical axis and with fixed cover interference fit, transition sleeve pipe connecting portion pass through third cylindric lock swing joint with two third connecting rods.

Preferably, the cone sleeve comprises a cone sleeve main body, a fixed disk fixedly connected with the cone sleeve main body, and a handle fixedly connected with the fixed disk, wherein an internal thread matched with the thread section of the transition sleeve is arranged on the cone sleeve, an external thread is arranged on the cone sleeve main body, and four uniformly distributed threaded holes are arranged on the fixed disk.

Preferably, the cone comprises a cone body and four cone threaded holes arranged on the large end face of the cone body, the cone body is provided with internal threads matched with the cone sleeve pipe body, and the large end face of the cone body is fixed with the fixed disc through bolts.

Preferably, the movable support comprises a movable support main body and four pairs of movable support connecting parts circumferentially fixed on the outer wall of the movable support main body, internal threads matched with the short thread sections are arranged on the movable support main body, and the movable support connecting parts are movably connected with the first connecting rod through the second cylindrical pins.

The utility model has the advantages of as follows:

(1) the fixing device of the flaring device is used for fixing the pipeline instead of the traditional external fixing of the pipeline, so that the installation of the fixing device is convenient, particularly the fixing of the pipeline buried underground is convenient, and the whole flaring device can be simplified;

(2) the cone for extruding the pipeline mouth is conical, the maximum diameter of the large end of the cone is larger than that of the small end, and the diameter of the large end is gradually transited to that of the small end, so that the cone can extrude the pipeline mouths with different diameters and is suitable for pipelines with different diameters; the cone and the cone sleeve are fixed through threaded connection and nuts, so that the flaring operation of pipelines with more specifications can be carried out on the flaring device only by replacing cones with different sizes;

(3) the fixing device is mainly formed by connecting a connecting rod and a cylindrical pin, and the connecting rod rotates around the cylindrical pin, so that the parts of the fixing device are convenient to replace and maintain after being damaged;

(4) the fixing device is connected with the main body part of the flaring device through the cylindrical pin, and the fixing device can be detached from the flaring device and is convenient to detach and install.

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 described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1: the overall structure schematic diagram of a pipeline flaring device;

FIG. 2: a schematic view of a rotary handle structure of a pipeline flaring device;

FIG. 3: a schematic structural diagram of a central shaft of a pipeline flaring device;

FIG. 4: a schematic view of a transition sleeve structure of a pipeline flaring device;

FIG. 5: a schematic structural diagram of a cone sleeve of a pipeline flaring device;

FIG. 6: a schematic view of a cone structure of a pipeline flaring device;

FIG. 7: a schematic diagram of a movable bracket structure of a pipeline flaring device;

FIG. 8: a schematic connection at a fixture of a pipe expander;

FIG. 9: a schematic structural diagram of a fixing part of a pipeline flaring device;

FIG. 10: a schematic diagram of a second connecting rod structure of a pipeline flaring device.

Description of the symbols:

1. rotating handle, 2, central shaft, 3, fixing sleeve, 4, transition sleeve, 5, cone sleeve, 6, cone, 7, movable support, 8, fixing device, 101, rotating handle connecting part, 102, internal cross spline, 103, handheld part, 201, short threaded section, 202, connecting section, 203, long threaded section, 204, external cross spline, 401, first optical axis, 402, transition sleeve threaded section, 403, second optical axis, 404, transition sleeve connecting part, 501, cone sleeve body, 502, fixed disk, 503, handle, 601, cone body, 602, cone threaded hole, 701, movable support body, 702, movable support connecting part, 801, first connecting rod, 802, second connecting rod, 803, third connecting rod, 804, first cylindrical pin, 805, second cylindrical pin, 806, third cylindrical pin, 807, fourth cylindrical pin, 808, sliding cylinder, 8021, 7, movable support, 8, fixing device, 101, second optical axis, 404, transition sleeve connecting part, 501, cone sleeve body, 502, fixed disk, 503, handle, cone body, cone, A second link body 8022, a second link groove 8023, a chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The terms "first," "second," and the like in the description and in the claims, 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, for example, capable of operation in sequences other than those illustrated or otherwise 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 invention will be further described with reference to the following figures and examples:

as shown in fig. 1, the utility model relates to a pipeline flaring device, including center pin 2, the rotation handle 1 of setting in 2 one ends of center pin, the movable support 7 of spiral installation on center pin 2, the transition sleeve pipe 4 on center pin 2 is installed to the spiral, the outer wall of transition sleeve pipe 4 passes through threaded connection with cone sleeve pipe 5's inner wall, cone sleeve pipe 5's outer wall passes through threaded connection with 6 inner walls of cone, center pin 2, transition sleeve pipe 4, cone sleeve pipe 5 and cone 6 are nested layer upon layer from inside to outside, cone sleeve pipe 5 and cone 6's big end lateral wall fixed connection, transition sleeve pipe 4 passes through fixing device 8 with movable support 7 and is connected.

As shown in fig. 8 and 9, the fixing device 8 includes four fixing portions, an included angle between two adjacent fixing portions is 90 °, the four fixing portions are uniformly distributed circumferentially and uniformly force-bearing the pipeline when contacting the pipeline, the fixing portions include a first connecting rod 801, two third connecting rods 803 movably connected to the first connecting rod 801 through a first cylindrical pin 804, and a second connecting rod 802 movably connected to the first connecting rod 801 through a sliding cylinder 808, the first connecting rod 801 is movably connected to the movable support 7 through a second cylindrical pin 805, for example, the first connecting rod 801 is rotatably connected to the movable support 7 through a second cylindrical pin 805, the two third connecting rods 803 are movably connected to the transition casing 4 through a third cylindrical pin 806, for example, the two third connecting rods 803 are rotatably connected to the transition casing 4 through a third cylindrical pin 806, the second connecting rod 802 is movably connected to the two third connecting rods 803 through a fourth cylindrical pin 807, illustratively, the second link 802 is rotatably connected with two third links 803 by a fourth cylindrical pin 807, the first link 801 and the two third links 803 are equal in shape and size, the center position of the first link 801 is movably connected with the center positions of the two third links 803 by a first cylindrical pin 804, a connecting line of one ends of the first link 801 and the two third links 803 close to the transition casing 4 is parallel to a center line of the transition casing 4, the second link 802 is parallel to the center line of the transition casing 4, and the distance between the two third links 803 is equal to the thickness of the second link 802 in the horizontal direction, so that the second link 802 can enter a space between the two third links 803 when moving towards the transition casing 4, and the thickness of the second link 802 in the horizontal direction is greater than the thickness of the first link 801 in the horizontal direction.

As shown in fig. 9 and 10, the second link 802 includes a second link main body 8021, a second link groove 8022 disposed on a lower end face of the second link main body 8021, and a chute 8023 penetrating the second link main body 8021 and communicating with the second link groove 8022, one end of the first link 801 is inserted into the second link groove 8022, and a middle portion of the sliding cylinder 808 is fixedly connected to the first link 801, for example, the middle portion of the sliding cylinder 808 is in interference fit with a hole on the first link 801, a diameter of the sliding cylinder 808 is equal to a width of the chute 8023, two ends of the sliding cylinder 808 are inserted into the chute 8023 and can slide in the chute 8023, a thickness of the first link 801 in a horizontal direction is equal to a width of the second link groove 8022 in the horizontal direction, so that the first link 801 can slide in the second link groove 8022 conveniently; when the movable support 7 and the transition sleeve 4 approach each other, the first connecting rod 801 and the third connecting rod 803 rotate relatively around the first cylindrical pin 804, the sliding cylinder 808 slides in the sliding slot 8023 while moving away from the transition sleeve 4, the second connecting rod 802 moves in a direction away from the transition sleeve 4, the second connecting rod 802 is always parallel to the center line of the transition sleeve 4, and the fixing device 8 opens inside the pipeline; when the movable support 7 and the transition sleeve 4 are far away from each other, the first link 801 and the third link 803 rotate relatively around the first cylindrical pin 804, the sliding cylinder 808 slides in the sliding slot 8023 while approaching the transition sleeve 4, the second link 802 moves towards the direction approaching the transition sleeve 4, the second link 802 is always parallel to the central line of the transition sleeve 4, and the fixing device 8 is retracted inside the pipeline.

As shown in fig. 1, the flaring device in the embodiment of the present invention further includes a fixing sleeve 3, the fixing sleeve 3 is installed on the transition sleeve 4, and the fixing sleeve 3 is made of hard wear-resistant rubber.

As shown in fig. 1 and 2, the rotating handle 1 includes a rotating handle connecting portion 101, four hand-held portions 103 fixedly connected to the outer wall of the rotating handle connecting portion 101 and uniformly distributed in the circumferential direction, illustratively, the four hand-held portions 103 may be welded, interference-fitted or screwed with the rotating handle connecting portion 101, and one end of the rotating handle connecting portion 101 is provided with an inner cross spline 102 and the other end is closed.

As shown in fig. 1 and 3, the central shaft 2 includes a short threaded section 201, a connection section 202 fixedly connected to the short threaded section 201, a long threaded section 203 fixedly connected to the connection section 202, and an external cross spline 204 fixedly connected to the long threaded section 203, the external cross spline 204 is engaged with the internal cross spline 102, so that there is no relative rotation between the rotating handle 1 and the central shaft 2, the connection section 202 is a cylindrical section, illustratively, the diameter of the connection section 202 is greater than the maximum diameter of the short threaded section 201 and the long threaded section 203, so as to prevent the transition sleeve 4 and the movable support 7 from slipping off the connection section 202, and the thread directions of the short threaded section 201 and the long threaded section 203 are opposite.

As shown in fig. 1 and 4, the transition sleeve 4 includes a first optical axis 401, a transition sleeve thread segment 402 fixedly connected to the first optical axis 401, a second optical axis 403 fixedly connected to the transition sleeve thread segment 402, and four evenly distributed transition sleeve connection portions 404 fixedly connected to an outer wall of the second optical axis 403, for example, the transition sleeve thread segment 402, the first optical axis 401 and the second optical axis 403 may be integrally processed or welded, an internal thread matched with the long thread segment 203 is provided on the transition sleeve 4, a fixing sleeve 3 is provided on the first optical axis 401 and is in interference fit with the fixing sleeve 3, and the transition sleeve connection portions 404 and two third connection rods 803 are movably connected through a third cylindrical pin 806.

As shown in fig. 1 and 5, the cone sleeve 5 includes a cone sleeve main body 501, a fixing plate 502 fixedly connected to the cone sleeve main body 501, and a handle 503 fixedly connected to the fixing plate 502, and the cone sleeve 5 is provided with an internal thread matched with the transition sleeve thread section 402.

As shown in fig. 1 and 6, the cone 6 includes a cone body 601 and four cone threaded holes 602 disposed on the large end surface of the cone body 601, the cone body 601 is provided with internal threads engaged with the cone sleeve body 501, the large end surface of the cone body 601 is fixed to the fixed disk 502 by bolts, and the maximum diameter of the large end surface of the cone body 601 is greater than the maximum diameter of the small end surface of the cone body 601.

As shown in fig. 1, 7 and 8, the movable support 7 includes a movable support main body 701, and four pairs of movable support connection portions 702 circumferentially fixed on the outer wall of the movable support main body 701, an internal thread matched with the short thread section 201 is provided on the movable support main body 701, the movable support connection portions 702 are movably connected with the first link 801 through a second cylindrical pin 805, the outer diameter of the movable support main body 701 is equal to the outer diameter of the second optical axis 403, the height of the movable support connection portions 702 is equal to the height of the transition sleeve connection portion 404, and it is ensured that the connection line of the first link 801 and one end of the two third links 803 close to the transition sleeve 4 is parallel to the center line of the transition sleeve 4.

Before the flaring operation is performed, the fixing means 8 are in a contracted condition. When flaring operation is carried out, firstly, one end of a mounting and fixing device 8 of the flaring device extends into the opening of a pipeline to be flared, so that the fixing device 8 is in the pipeline, the cone 6 and other structures on one side of the cone 6, which is far away from the fixing device 8, are outside the pipeline, the transition sleeve 4 is static by holding the fixing sleeve 3 mounted on the transition sleeve 4, the movable support 7 and the transition sleeve 4 are close to each other by rotating the rotating handle 1 connected to one end of the central shaft 2, the first connecting rod 801 and the third connecting rod 803 rotate relatively, the sliding cylinder 808 slides on the second connecting rod 802, the second connecting rod 802 moves in the direction far away from the transition sleeve 4, so that the fixing device 8 is flared in the pipeline, and after all the four second connecting rods 802 are in contact with the inner wall of the pipeline, the fixing device 8 completes fixing work;

after the pipeline is fixed, the handle 503 on the cone sleeve 5 is rotated, so that the cone 6 connected with the cone sleeve 5 can move towards the direction close to the pipeline, and as the minimum diameter of the cone 6 is smaller than the inner diameter of the expanded pipeline opening and the maximum diameter of the cone 6 is larger than the inner diameter of the expanded pipeline opening, the handle 503 is continuously rotated after the small end of the cone 6 enters the pipeline opening to contact with the inner wall of the pipeline, and the pipeline opening is extruded by the cone 6, so that the diameter is expanded;

after the flaring operation is finished, the handle 503 on the cone sleeve 5 is rotated reversely to separate the cone 6 from the pipeline, then the rotating handle 1 connected to one end of the central shaft 2 is rotated reversely to contract the fixing device 8 to separate from the inner wall of the pipeline, and finally the flaring device is drawn out from the pipeline.

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; although the present invention has been described in detail with reference to the foregoing embodiments, it should 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; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A pipeline flaring device is characterized in that: the cone-shaped sleeve is fixedly connected with the large end side wall of the cone, the transition sleeve is connected with the movable support through a fixing device, the fixing device comprises four fixing parts, an included angle between every two adjacent fixing parts is 90 degrees, and each fixing part comprises a first connecting rod, two third connecting rods movably connected with the first connecting rod through a first cylindrical pin, and a second connecting rod movably connected with the first connecting rod through a sliding cylinder, the first connecting rod is movably connected with the movable support through a second cylindrical pin, the two third connecting rods are movably connected with the transition sleeve through third cylindrical pins, and the second connecting rod is movably connected with the two third connecting rods through a fourth cylindrical pin.

2. A pipe expander as claimed in claim 1, wherein: the first connecting rod and the two third connecting rods are equal in shape and size, the center position of the first connecting rod is movably connected with the center positions of the two third connecting rods through the first cylindrical pin, the distance between the two third connecting rods is equal to the thickness of the second connecting rod in the horizontal direction, and the thickness of the second connecting rod in the horizontal direction is larger than that of the first connecting rod in the horizontal direction.

3. A pipe expander as claimed in claim 2, wherein: the second connecting rod includes the second connecting rod main part, sets up the second connecting rod recess of terminal surface under the second connecting rod main part, runs through the second connecting rod main part and with the spout that the second connecting rod recess is linked together, the one end of first connecting rod is inserted the second connecting rod recess, the cylindrical middle part of slip with first connecting rod fixed connection, the cylindrical both ends of slip are inserted the spout just can slide in the spout, first connecting rod at the thickness of horizontal direction with the width of second connecting rod recess at the horizontal direction equals.

4. A pipe expander as claimed in claim 3, wherein: the transition sleeve is characterized by further comprising a fixed sleeve, wherein the fixed sleeve is mounted on the transition sleeve and is made of hard wear-resistant rubber.

5. A pipe expander as claimed in claim 1, wherein: the rotation handle is including rotating handle connecting portion, fixed connection rotate handle connecting portion outer wall and be four handheld portions of circumference equipartition, it seals to rotate handle connecting portion one end and set up the other end of interior cross spline.

6. A pipe expander as claimed in claim 1 or 5, wherein: the central shaft comprises a short thread section, a connecting section fixedly connected with the short thread section, a long thread section fixedly connected with the connecting section, and an outer cross spline fixedly connected with the long thread section, wherein the outer cross spline is matched with the inner cross spline, the connecting section is a cylindrical section, and the thread turning directions of the short thread section and the long thread section are opposite.

7. A pipe expander as claimed in claim 6, wherein: transition sleeve pipe include first optical axis, with first optical axis fixed connection's transition sleeve pipe screw thread section, with transition sleeve pipe screw thread section fixed connection's second optical axis, the transition sleeve pipe connecting portion of four equipartitions of outer wall fixed connection of second optical axis, set up on the transition sleeve pipe with long screw thread section complex internal thread, set up fixed cover on the first optical axis and with fixed cover interference fit, transition sleeve pipe connecting portion pass through third cylindric lock swing joint with two third connecting rods.

8. A pipe expander as claimed in claim 7, wherein: the cone sleeve comprises a cone sleeve main body, a fixed disc fixedly connected with the cone sleeve main body and a handle fixedly connected with the fixed disc, wherein an internal thread matched with the thread section of the transition sleeve is arranged on the cone sleeve, an external thread is arranged on the cone sleeve main body, and four uniformly distributed threaded holes are formed in the fixed disc.

9. A pipe expander as defined in claim 8, wherein: the cone comprises a cone body and four cone threaded holes formed in the large end face of the cone body, internal threads matched with the cone sleeve main body are formed in the cone body, and the large end face of the cone body and the fixed disc are fixed through bolts.

10. A pipe expander according to any one of claims 1-4, characterised in that: the movable support comprises a movable support main body and four pairs of movable support connecting parts, wherein the periphery of the movable support connecting parts is fixed on the outer wall of the movable support main body, internal threads matched with the short thread sections are arranged on the movable support main body, and the movable support connecting parts are movably connected with the first connecting rod through the second cylindrical pins.