CN118167866A

CN118167866A - Petroleum pipe tool repairing device

Info

Publication number: CN118167866A
Application number: CN202410601587.5A
Authority: CN
Inventors: 王磊; 王建
Original assignee: Jiangsu Jiasheng Petroleum Technology Co ltd
Current assignee: Jiangsu Jiasheng Petroleum Technology Co ltd
Priority date: 2024-05-15
Filing date: 2024-05-15
Publication date: 2024-06-11
Anticipated expiration: 2044-05-15
Also published as: CN118167866B

Abstract

The application discloses a petroleum pipe tool repairing device which comprises a limiting assembly, a repairing assembly and a first pipe body, wherein the first pipe body is connected with the repairing assembly; the limiting assembly is arranged in the first pipe body and is connected with the repairing assembly; the repairing assembly comprises a shell, a first motor, a transmission mechanism, a fixing mechanism and an extrusion mechanism, wherein the shell is detachably connected with the first pipe body; the first motor is arranged on the shell, and an output shaft of the first motor penetrates through the side wall of the shell and is connected with the transmission mechanism; the transmission mechanism is arranged in the shell, and is respectively connected with the fixing mechanism and the extrusion mechanism, and the extrusion mechanism is pivotally connected to the fixing mechanism. Therefore, the method of gradual pressing restoration is adopted, so that the stress release and dispersion are facilitated, the protruding part of the stone pipeline can be gradually adapted to deformation, the stress peak value is reduced, and the risk of damage to the petroleum pipeline is reduced.

Description

Petroleum pipe tool repairing device

Technical Field

The application relates to the technical field of pipeline repair, in particular to a petroleum pipeline repair device.

Background

Petroleum tubing (piping), an indispensable ring in the petroleum industry, carries an important task for transporting petroleum and petrochemicals. The special pipeline ensures that petroleum can stably and efficiently flow in the pipeline by virtue of excellent sealing property and corrosion resistance, and provides powerful guarantee for the stable operation of the whole petroleum industry chain.

However, in practical application, the petroleum pipeline also encounters various challenges (such as natural disasters like falling rocks and landslide, or is affected by human factors, such as misoperation of construction machinery, traffic accidents, and the like), and particularly, the problem of inner concave of the outer surface caused by external heavy impact, which has adverse effects on the local structural strength and flow of the pipeline, thereby affecting the flow and pressure at two ends of the pipeline, and reducing the service life and safety coefficient of the pipeline.

At present, for the restoration of the inside bulge of petroleum pipeline, often adopted is the roll extrusion mechanism that can 360 rotatory in pipeline inside, once only force the bulge and carry out roll extrusion flattening treatment, but because the shape of bulge has changed, this region itself just has the condition of stress concentration, and adopts the mode of once only pressing down by force, the inside bulge of pipeline probably has the too big risk of stress concentration, and then causes the damaged condition of bulge.

Disclosure of Invention

The present application aims to solve at least one of the technical problems in the related art to some extent.

Therefore, an object of the present application is to provide a petroleum pipe repairing device, which not only facilitates the release and dispersion of stress, but also enables the protruding portion of the stone pipe to adapt to deformation gradually, thereby reducing the stress peak value and reducing the risk of damage to the petroleum pipe.

In order to achieve the above purpose, an embodiment of a first aspect of the present application provides a petroleum pipe tool repairing device, including a limiting component, a repairing component and a first pipe body, wherein the first pipe body is connected with the repairing component; the limiting assembly is arranged in the first pipe body and connected with the repairing assembly, and the limiting assembly is used for fixing the repairing assembly in a petroleum pipeline; the repairing component is used for repairing the protruding part of the inner wall of the petroleum pipeline; the repairing assembly comprises a shell, a first motor, a transmission mechanism, a fixing mechanism and an extrusion mechanism, wherein the shell is detachably connected with the first pipe body;

The first motor is arranged on the shell, and an output shaft of the first motor penetrates through the side wall of the shell and is connected with the transmission mechanism; the transmission mechanism is arranged in the shell, and is respectively connected with the fixing mechanism and the extrusion mechanism, and the extrusion mechanism is pivotally connected to the fixing mechanism; the first motor is used for driving the fixing mechanism to rotate through the transmission mechanism and driving the extrusion mechanism to swing back and forth through the transmission mechanism; the fixing mechanism is used for driving the extrusion mechanism to rotate so as to gradually drive the bulge part on the inner wall of the petroleum pipeline to carry out pressure restoration treatment.

According to the petroleum pipe tool repairing device provided by the embodiment of the application, the limit assembly is utilized, so that the repairing assembly can be firmly fixed in a petroleum pipeline, then the first motor is started to operate, the output shaft of the first motor drives the transmission mechanism to rotate, the mechanism can enable the fixing mechanism to slowly rotate and enable the extrusion mechanism to realize reciprocating swing, and meanwhile, the extrusion mechanism can slowly rotate while reciprocating swing is carried out under the driving of the fixing mechanism. Can follow the outer lane of petroleum pipeline bulge and drive to press the repair treatment gradually to the inner race, this kind of repair mode that gradually drives to press not only can make the material of bulge adapt to the deformation gradually for stress peak can reduce, can also help the release and the dispersion of stress, thereby greatly reduced the damaged risk of petroleum pipeline.

In addition, the petroleum pipe repairing device provided by the application can also have the following additional technical characteristics:

In one embodiment of the application, the limiting assembly comprises a tube cover, a driving mechanism, a plurality of limiting mechanisms, a supporting table and a plurality of connecting rods, wherein the tube cover is detachably connected to one end of the first tube body far away from the repairing assembly; the driving mechanism is connected with the pipe cover, and one end of the driving mechanism is rotationally connected with the supporting table; the supporting table is arranged on the shell; the limiting mechanisms are respectively connected with the first pipe body in a sliding manner; one end of each connecting rod is hinged with the driving mechanism, and the other end of each connecting rod is hinged with the corresponding limiting mechanism.

In one embodiment of the application, the driving mechanism comprises a second motor, a bidirectional screw rod, two symmetrically arranged threaded sleeves and a plurality of fixing rods, wherein the second motor is arranged on the pipe cover, and an output shaft of the second motor penetrates through the pipe cover and is fixedly connected with the bidirectional screw rod; one end of the bidirectional screw rod is rotationally connected with the supporting table; the two threaded sleeves are respectively in threaded connection with the two-way screw rod, a plurality of fixing rods are fixedly connected to the outer wall of each threaded sleeve, and two connecting rods are hinged to each fixing rod.

In one embodiment of the application, the limiting mechanism comprises a fixed frame, a vertical rod, a plurality of universal balls and an arc-shaped plate, wherein the vertical rod is in sliding connection with a first through hole formed in the first pipe body; the fixing frame is fixed on the bottom end of the vertical rod, and one end, away from the threaded sleeve, of the connecting rod is hinged with the fixing frame; the arc-shaped plate is fixed on the top end of the vertical rod; the universal balls are respectively embedded and arranged on the arc-shaped plate.

In one embodiment of the application, the transmission mechanism comprises an annular gear, a plurality of first gears, a second gear, a disc, a push rod, a cross rod and a baffle plate, wherein the annular gear is fixed in the shell;

The baffle is rotatably connected in the shell, the baffle is arranged between the inner wall of the shell and the annular gear, and a second through hole is formed in the center of the baffle; an output shaft of the first motor penetrates through the second through hole and is fixedly connected with the second gear; the first gears are respectively connected to the baffle in a rotating way, and are respectively connected with the annular gear and the second gear in a meshed way; one end of the cross rod is fixed on the second gear, and the other end of the cross rod is fixedly connected with the disc; the push rod is rotatably connected to the disc.

In one embodiment of the present application, the fixing mechanism includes a second pipe body, a plurality of rod bodies, a plurality of ferrules and a plate body, wherein the plurality of rod bodies are fixedly connected with the corresponding first gears respectively, and the plurality of rod bodies are rotatably connected with the corresponding ferrules respectively; the ferrules are respectively fixed on the inner wall of the second pipe body; the second pipe body is provided with a first through groove; the plate body is fixed in the second pipe body, and the plate body faces the first through groove.

In one embodiment of the application, the extrusion mechanism comprises a pushing plate, a telescopic component and a compression roller, wherein the pushing plate is pivotally connected to the plate body, a second through groove is formed in the pushing plate, and the push rod is slidably connected in the second through groove; one end of the telescopic component is fixedly connected with the pushing plate, and the other end of the telescopic component penetrates through the first through groove and is fixedly connected with the compression roller.

In one embodiment of the application, the application further comprises a traction mechanism comprising a crawler, a traction rod, a connecting plate and a borescope, wherein the connecting plate is detachably connected to the port of the second pipe body, and the connecting plate is hinged with the traction rod; the other end of the traction rod is fixed on the crawler; the borescope is arranged on the crawler.

Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of the application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a petroleum pipe rehabilitation device according to one embodiment of the present application;

FIG. 2 is a schematic view showing an internal structure of a first pipe body according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a repair assembly according to one embodiment of the present application;

FIG. 4 is a second schematic structural view of a repair assembly according to one embodiment of the present application;

Fig. 5 is a schematic view of a petroleum pipe repairing apparatus according to an embodiment of the present application.

As shown in the figure: 1. a limit component; 2. repairing the component; 3. a traction mechanism; 4. a first tube body; 10. a tube cover; 11. a driving mechanism; 12. a limiting mechanism; 13. a support table; 14. a connecting rod; 20. a housing; 21. a first motor; 22. a transmission mechanism; 23. a fixing mechanism; 24. an extrusion mechanism; 30. a crawler; 31. a traction rod; 32. a connecting plate; 33. a borescope; 110. a second motor; 111. a two-way screw rod; 112. a threaded sleeve; 113. a fixed rod; 120. a fixing frame; 121. a vertical rod; 122. a universal ball; 123. an arc-shaped plate; 220. an inner gear ring; 221. a first gear; 222. a second gear; 223. a disc; 224. a push rod; 225. a cross bar; 226. a baffle; 230. a second tube body; 231. a rod body; 232. a ferrule; 233. a plate body; 240. a pushing plate; 241. a telescopic member; 242. a press roller; 2300. a first through groove; 2400. and a second through slot.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.

The petroleum pipe repairing device according to the embodiment of the application is described below with reference to the accompanying drawings.

As shown in fig. 1 to 5, the petroleum pipe repairing device according to the embodiment of the present application may include a limiting assembly 1, a repairing assembly 2 and a first pipe body 4.

Wherein, first body 4 links to each other with repair subassembly 2, and spacing subassembly 1 sets up in first body 4, and spacing subassembly 1 links to each other with repair subassembly 2, and spacing subassembly 1 is used for fixing repair subassembly 2 in petroleum pipeline.

The repairing assembly 2 is used for repairing the protruding part of the inner wall of the petroleum pipeline, and the repairing assembly 2 can comprise a shell 20, a first motor 21, a transmission mechanism 22, a fixing mechanism 23 and an extrusion mechanism 24.

Wherein, the casing 20 is detachably connected with the first pipe body 4, the first motor 21 is arranged on the casing 20, and an output shaft of the first motor 21 penetrates through a side wall of the casing 20 to be connected with the transmission mechanism 22, the transmission mechanism 22 is arranged in the casing 20, and the transmission mechanism 22 is respectively connected with the fixing mechanism 23 and the extrusion mechanism 24, and the extrusion mechanism 24 is pivotally connected on the fixing mechanism 23.

The first motor 21 is used for driving the fixing mechanism 23 to rotate through the transmission mechanism 22 and driving the extrusion mechanism 24 to swing reciprocally through the transmission mechanism 22, and the fixing mechanism 23 is used for driving the extrusion mechanism 24 to rotate so as to perform gradual pressing repairing treatment on the protruding part of the inner wall of the petroleum pipeline.

In practical application, when repairing the protruding part in the petroleum pipeline, related personnel can flexibly place the device or accurately push the device to a target position (namely, the protruding part to be repaired) by using the external connecting rod. Subsequently, the limiting assembly 1 is started, and the repairing assembly 2 is ensured to be firmly fixed in the petroleum pipeline, so that the axis of the petroleum pipeline and the axis of the repairing assembly 2 can always keep a coaxial and collinear state, and further flatness of the protruding part inside the petroleum pipeline repaired by the repairing assembly 2 can be ensured.

By starting the first motor 21, the output shaft of the first motor 21 drives the transmission mechanism 22 to rotate, and the mechanism can not only slowly rotate the fixing mechanism 23, but also enable the extrusion mechanism 24 to realize reciprocating swing, the extrusion mechanism 24 firstly approaches the outer ring of the convex part of the petroleum pipeline to drive and press, and then moves away from the convex part, so that a reciprocating drive and press mode which approaches and moves away alternately is formed, and stress at the convex part is released and dispersed. When the pressing mechanism 24 approaches the bulge, it applies moderate pressure to the bulge material, and when it is far away, the bulge material will rebound slightly. This alternating action contributes to a uniform distribution of stresses, reducing the risk of local overstresses.

More importantly, the pressing mechanism 24 can slowly rotate while reciprocating under the driving of the fixing mechanism 23. This means that extrusion mechanism 24 is in the repair process, can follow the outer lane of petroleum pipeline bulge and gradually catch up with the pressure repair treatment to the inner race, not only can realize all-round repair treatment, this kind of mode that gradually changes bulge shape and structure simultaneously, can also effectively avoid the stress concentration, the too big problem of stress that once only force the roll extrusion probably leads to in the conventional art, and this kind of repair mode that gradually catch up with presses, can also make the material of bulge adapt to the deformation gradually for stress peak value can be reduced, thereby greatly reduced the damaged risk of petroleum pipeline.

In one embodiment of the present application, as shown in fig. 2, the spacing assembly 1 may include a tube cap 10, a driving mechanism 11, a plurality of spacing mechanisms 12, a support table 13, and a plurality of connecting rods 14.

Wherein, the pipe cover 10 is detachably connected to one end of the first pipe body 4 far away from the repairing assembly 2, the driving mechanism 11 is connected with the pipe cover 10, one end of the driving mechanism 11 is rotationally connected with the supporting table 13, the supporting table 13 is arranged on the shell 20, the plurality of limiting mechanisms 12 are respectively in sliding connection with the first pipe body 4, one ends of the plurality of connecting rods 14 are hinged with the driving mechanism 11, and the other ends of the plurality of connecting rods 14 are hinged with the corresponding limiting mechanisms 12.

Specifically, relevant personnel can lift the first pipe body 4 to the central position of the petroleum pipeline by starting the driving mechanism 11 so that the driving mechanism 11 can synchronously drive the plurality of limiting mechanisms 12 to cooperatively work, so that the coaxial collineation of the axial lead of the repairing assembly 2 and the axial lead of the petroleum pipeline is ensured, and further the smoothness of the petroleum pipeline during inner wall repairing is improved.

In one embodiment of the present application, as shown in fig. 2, the driving mechanism 11 may include a second motor 110, a bi-directional screw 111, two symmetrically arranged threaded sleeves 112, and a plurality of fixing rods 113.

Wherein the second motor 110 is arranged on the pipe cover 10, and an output shaft of the second motor 110 penetrates through the pipe cover 10 and is fixedly connected with the bidirectional screw rod 111, one end of the bidirectional screw rod 111 is rotatably connected with the supporting table 13,

The two threaded sleeves 112 are respectively in threaded connection with the two-way screw rod 111, a plurality of fixing rods 113 are fixedly connected to the outer wall of each threaded sleeve 112, and two connecting rods 14 are hinged to each fixing rod 113.

Specifically, by starting the second motor 110, the related person drives the bidirectional screw rod 111 to rotate by the output shaft of the second motor 110, and simultaneously drives the two threaded sleeves 112 to approach or separate from each other while the bidirectional screw rod 111 rotates, so that the positions of the two threaded sleeves 112 can be changed, and the height position of the limiting mechanism 12 can be adjusted.

In one embodiment of the present application, as shown in fig. 2, the limiting mechanism 12 may include a fixed frame 120, a vertical rod 121, a plurality of universal balls 122, and an arc 123.

Wherein, montant 121 and the first through-hole sliding connection of seting up on the first body 4, mount 120 is fixed on the bottom of montant 121, and the one end that the connecting rod 14 kept away from screw sleeve 112 is articulated with mount 120, and arc 123 is fixed on the top of montant 121, and a plurality of universal balls 122 imbeds respectively and set up on arc 123.

Specifically, the vertical rod 121 can be pushed to move up and down via the connecting rod 14 when the threaded sleeve 112 moves, so that the position of the arc 123 can be changed, so that the universal ball 122 is pushed against the inner wall of the petroleum pipeline.

Among other things, it can be appreciated that the use of the universal ball 122 increases the smoothness of the device as it moves in a petroleum pipeline.

In one embodiment of the present application, as shown in fig. 3, the transmission 22 may include an annular gear 220, a plurality of first gears 221, a second gear 222, a disc 223, a push rod 224, a cross rod 225, and a baffle 226.

Wherein, ring gear 220 is fixed in casing 20, baffle 226 rotates to be connected in casing 20, baffle 226 is arranged between the inner wall of casing 20 and ring gear 220, and the center of baffle 226 is provided with the second through-hole, the output shaft of first motor 21 runs through the second through-hole and is connected with second gear 222 fixed, a plurality of first gears 221 rotate respectively to be connected on baffle 226, and a plurality of first gears 221 respectively with ring gear 220 and second gear 222 meshing connection, the one end of horizontal pole 225 is fixed on second gear 222, the other end and the disc 223 fixed connection of horizontal pole 225, push rod 224 rotates to be connected on disc 223.

Specifically, by starting the first motor 21, the output shaft of the first motor 21 drives the second gear 222 to rotate, the second gear 222 rotates and drives the disc 223 and the first gear 221 to rotate simultaneously, and the first gear 221 is matched with the internal gear 220 to revolve under the action of the internal gear 220 while rotating, so that the fixing mechanism 23 is driven to rotate.

In one embodiment of the present application, as shown in fig. 4, the fixing mechanism 23 may include a second tube 230, a plurality of rods 231, a plurality of ferrules 232, and a plate 233.

The rod bodies 231 are fixedly connected with the corresponding first gears 221, the rod bodies 231 are rotatably connected with the corresponding ferrules 232, the ferrules 232 are respectively fixed on the inner wall of the second pipe body 230, the second pipe body 230 is provided with a first through groove 2300, the plate body 233 is fixed in the second pipe body 230, and the plate body 233 faces the first through groove 2300.

Specifically, the first gear 221 also can drive the second pipe body 230 to rotate through the rod body 231 and the ferrule 232 while revolving, so as to drive the pressing mechanism 24 to rotate, and the pressing mechanism 24 also rotates while swinging reciprocally.

In one embodiment of the present application, as shown in FIG. 4, the pressing mechanism 24 may include a push plate 240, a telescoping member 241, and a press roller 242.

Wherein, the pushing plate 240 is pivotally connected to the plate body 233, the pushing plate 240 is provided with a second through slot 2400, the push rod 224 is slidably connected to the second through slot 2400, one end of the telescopic member 241 is fixedly connected to the pushing plate 240, and the other end of the telescopic member 241 penetrates through the first through slot 2300 and is fixedly connected to the pressing roller 242.

It should be noted that, the telescopic component 241 described in this embodiment may be an air cylinder or a hydraulic cylinder, so that the position of the compression roller 242 can be adjusted according to the radius of the petroleum pipeline, so that the compression roller 242 is attached to the inner wall of the petroleum pipeline, and is further suitable for petroleum pipelines with different diameters, thereby improving the application range of the device.

As a possible case, in order to reduce the cost of the telescopic member 241, the telescopic member 241 may be a telescopic sleeve with a locking bolt, and the telescopic distance of the telescopic sleeve may be adjusted by adjusting the tightness of the locking bolt.

Specifically, the disc 223 can drive the push rod 224 to rotate while rotating, and the push rod 224 slides in the second through groove 2400, so as to drive the pushing plate 240 to drive the press roller 242 to swing reciprocally in the first through groove 2300 through the telescopic component 241, and perform the driving repairing treatment on the protruding portion.

Further, as shown in fig. 5, the petroleum pipe repairing apparatus may further include a traction mechanism 3, wherein the traction mechanism 3 includes a crawler 30, a traction rod 31, a connection plate 32 and a borescope 33.

Wherein, the connecting plate 32 is detachably connected to the port of the second pipe body 230, and the connecting plate 32 is hinged with the traction rod 31, the other end of the traction rod 31 is fixed on the crawler 30, and the borescope 33 is arranged on the crawler 30.

It should be noted that, the detailed structures of the borescope 33 and the crawler 30 in this embodiment are all the prior art, and are not repeated here.

At the longer condition of petroleum pipeline, can drive repair assembly 2 through crawler 30 cooperation traction lever 31 and connecting plate 32 and remove in the pipeline, easy operation is swift, and the borescope 33 can be used for taking a picture and video of the inside defect of pipeline and upload in real time to the outside display screen and show to the convenience is correlated with personnel to look over the concrete condition of the inside bulge of pipeline.

In summary, the petroleum pipe tool repairing device provided by the embodiment of the application adopts a gradual pressing repairing mode, which is not only beneficial to release and dispersion of stress, but also can enable the protruding part of the stone pipe to gradually adapt to deformation, and reduce the stress peak value, thereby reducing the risk of damage to the petroleum pipe.

In the description of this specification, the terms "first," "second," and the like 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 defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims

1. The petroleum pipe repairing device is characterized by comprising a limiting component, a repairing component and a first pipe body, wherein,

The first pipe body is connected with the repairing assembly;

The limiting assembly is arranged in the first pipe body and connected with the repairing assembly, and the limiting assembly is used for fixing the repairing assembly in a petroleum pipeline;

The repairing component is used for repairing the protruding part of the inner wall of the petroleum pipeline;

the repairing component comprises a shell, a first motor, a transmission mechanism, a fixing mechanism and an extrusion mechanism, wherein,

The shell is detachably connected with the first pipe body;

The first motor is arranged on the shell, and an output shaft of the first motor penetrates through the side wall of the shell and is connected with the transmission mechanism;

The transmission mechanism is arranged in the shell, and is respectively connected with the fixing mechanism and the extrusion mechanism, and the extrusion mechanism is pivotally connected to the fixing mechanism;

The first motor is used for driving the fixing mechanism to rotate through the transmission mechanism and driving the extrusion mechanism to swing back and forth through the transmission mechanism;

the fixing mechanism is used for driving the extrusion mechanism to rotate so as to gradually drive the bulge part on the inner wall of the petroleum pipeline to carry out pressure restoration treatment.

2. The petroleum pipe rehabilitation device according to claim 1, wherein the limiting assembly comprises a pipe cap, a drive mechanism, a plurality of limiting mechanisms, a support table, and a plurality of connecting rods, wherein,

The pipe cover is detachably connected to one end of the first pipe body, which is far away from the repairing assembly;

The driving mechanism is connected with the pipe cover, and one end of the driving mechanism is rotationally connected with the supporting table;

The supporting table is arranged on the shell;

The limiting mechanisms are respectively connected with the first pipe body in a sliding manner;

One end of each connecting rod is hinged with the driving mechanism, and the other end of each connecting rod is hinged with the corresponding limiting mechanism.

3. The petroleum pipe rehabilitation device according to claim 2, wherein the driving mechanism comprises a second motor, a bi-directional screw, two symmetrically arranged threaded sleeves and a plurality of fixing rods, wherein,

The second motor is arranged on the pipe cover, and an output shaft of the second motor penetrates through the pipe cover and is fixedly connected with the bidirectional screw rod;

One end of the bidirectional screw rod is rotationally connected with the supporting table;

The two threaded sleeves are respectively in threaded connection with the two-way screw rod, a plurality of fixing rods are fixedly connected to the outer wall of each threaded sleeve, and two connecting rods are hinged to each fixing rod.

4. The petroleum pipe tool repairing apparatus according to claim 3, wherein the limiting mechanism comprises a fixing frame, a vertical rod, a plurality of universal balls and an arc-shaped plate, wherein,

The vertical rod is in sliding connection with a first through hole formed in the first pipe body;

the fixing frame is fixed on the bottom end of the vertical rod, and one end, away from the threaded sleeve, of the connecting rod is hinged with the fixing frame;

The arc-shaped plate is fixed on the top end of the vertical rod;

the universal balls are respectively embedded and arranged on the arc-shaped plate.

5. The petroleum pipe tool repairing apparatus of claim 1, wherein said transmission mechanism comprises an annulus gear, a plurality of first gears, a second gear, a disk, a pushrod, a cross bar, and a baffle plate, wherein,

The inner gear ring is fixed in the shell;

The baffle is rotatably connected in the shell, the baffle is arranged between the inner wall of the shell and the annular gear, and a second through hole is formed in the center of the baffle;

an output shaft of the first motor penetrates through the second through hole and is fixedly connected with the second gear;

the first gears are respectively connected to the baffle in a rotating way, and are respectively connected with the annular gear and the second gear in a meshed way;

One end of the cross rod is fixed on the second gear, and the other end of the cross rod is fixedly connected with the disc;

The push rod is rotatably connected to the disc.

6. The petroleum pipe tool repairing apparatus according to claim 5, wherein said fixing means comprises a second pipe body, a plurality of rod bodies, a plurality of ferrules and a plate body, wherein,

The rod bodies are fixedly connected with the corresponding first gears respectively, and the rod bodies are connected with the corresponding ferrules in a rotating manner respectively;

the ferrules are respectively fixed on the inner wall of the second pipe body;

The second pipe body is provided with a first through groove;

the plate body is fixed in the second pipe body, and the plate body faces the first through groove.

7. The petroleum pipe rehabilitation device according to claim 6, wherein the pressing mechanism comprises a push plate, a telescopic member, and a pressing roller, wherein,

The pushing plate is pivotally connected to the plate body, a second through groove is formed in the pushing plate, and the push rod is slidably connected in the second through groove;

One end of the telescopic component is fixedly connected with the pushing plate, and the other end of the telescopic component penetrates through the first through groove and is fixedly connected with the compression roller.

8. The petroleum pipe rehabilitation device according to claim 6, further comprising a traction mechanism comprising a crawler, a drawbar, a connecting plate, and a borescope, wherein,

The connecting plate is detachably connected to the port of the second pipe body and is hinged with the traction rod;

the other end of the traction rod is fixed on the crawler;

The borescope is arranged on the crawler.