CN109869569B

CN109869569B - Intelligent control pipeline plugging device

Info

Publication number: CN109869569B
Application number: CN201910236740.8A
Authority: CN
Inventors: 石建设
Original assignee: Tianjin Greentsing Pipeline Technology Co ltd
Current assignee: Tianjin Greentsing Pipeline Technology Co ltd
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2020-09-22
Anticipated expiration: 2039-03-28
Also published as: CN109869569A

Abstract

The invention provides an intelligent control pipeline plugging device, which comprises a main control assembly, a speed reduction distance increasing and driving mechanism, a support assembly, a sealing assembly and an anchoring and internal locking mechanism, wherein the speed reduction distance increasing and driving mechanism adopts a multi-stage planetary speed reduction mechanism and a transmission thread structure to replace a hydraulic transmission mechanism in the prior art, and has the following beneficial effects: the structure is compact, the weight is light, the wear of the leather cup is slowed down, and the effective running distance is increased; the sealing is reliable, and the continuous operation can be realized in the pipeline; need not to go up the trompil on the pipeline, guaranteed the integrality of pipeline, reduced the operation degree of difficulty, saved the effect of maintenance duration and labour cost simultaneously greatly.

Description

Intelligent control pipeline plugging device

Technical Field

The invention relates to the field of oil and gas pipeline maintenance, in particular to an intelligent control pipeline plugging device.

Background

In the oil and gas industry, pipeline transportation is the most prominent mode. The pipeline is damaged due to the influence of a plurality of factors such as material corrosion, defects, artificial damage, external force interference and the like in the long-term operation process. The existing widely used pipeline maintenance method is a pressurized hole blocking technology, although the technology can finish the continuous transportation repair of the oil and gas pipeline, the method has high cost and complex process, and the service life is influenced because holes are left in the pipeline.

Foreign companies have successfully developed an intelligent plugging device capable of automatically plugging and unsealing a pipeline under high pressure, and the intelligent plugging device is successfully applied in actual production. The technology does not need to open holes on the pipeline, ensures the integrity of the pipeline, reduces the operation difficulty, and greatly saves the maintenance time and the labor cost. The working principle is as follows: when the intelligent plugging device runs to a specified position in a pipeline, the intelligent plugging device contracts along the axial direction under the action of self power, and the axial contraction motion of the intelligent plugging device is converted into the radial expansion motion of the wedge-shaped slip through the inclined plane, so that the inner wall of the pipeline is clamped; the sealing rubber cylinder is compressed and extruded outwards along the radial direction while the axial shrinkage is carried out, so that the sealing between the sealing rubber cylinder and the inner wall of the pipeline is realized. After the plugging operation is completed, the intelligent plugging device axially extends under the action of self power, the wedge-shaped slips and the sealing rubber cylinder recover to the original position, and the intelligent plugging device returns to the ball collecting end of the pipeline under the pushing of a medium.

In China, the Chinese invention patent specification CN101377259A discloses an intelligent plugging device in a pipe; the main principle is as follows: when the intelligent plugging device reaches an appointed position, the pressure-bearing head, the extrusion bowl and the actuator disc are driven to be close to each other in the axial direction by the driving of the main driving cylinder and the auxiliary driving cylinder, the locking slide block radially expands to clamp the pipe wall under the action of the inclined surface of the extrusion bowl, and the packing ring radially expands to realize plugging; after the operation is finished, the main driving cylinder and the auxiliary driving cylinder move reversely to realize deblocking, and the ball is returned to the ball collecting end under the pushing of a medium.

In China, the patent specification CN107631122A of the invention discloses a novel intelligent plugging device, which has the main principle that: when the plugging assembly and the power assembly reach the designated positions, the micro hydraulic module fills high-pressure fluid into a main hydraulic cylinder of the plugging assembly through a high-pressure hose to radially expand the plugging space ring and the locking slip to realize plugging; after the operation is finished, the communication module receives an unsealing instruction, the control module drives the micro hydraulic module to draw back the high-pressure fluid, and the seal ring and the locking slip recover to the original position to realize unsealing; and the medium is pushed to return to the ball-collecting end of the pipeline.

The invention converts the rotary motion of the motor into the linear motion of the hydraulic cylinder by the conversion mode of electric energy, hydraulic energy and mechanical energy, pushes the radial expansion of the slips and the rubber cylinder, and realizes anchoring and packing; although the structure is different, the principle is the same.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The invention provides an intelligent control pipeline plugging device, which is used for solving the technical problem that the plugging device in the prior art is complex in structure.

In order to solve the above problems, the present invention provides an intelligent control pipeline plugging device, comprising: the device comprises a main control assembly, a speed reduction distance increasing and driving mechanism, a supporting assembly, a sealing assembly and an anchoring and internal locking mechanism;

the main control assembly is provided with a driving base, the driving base is provided with a cylindrical cavity, and an intelligent control assembly is arranged in the cylindrical cavity; the support assemblies are respectively positioned on two sides of the intelligent control pipeline plugging device; the sealing assembly and the anchoring and internal locking mechanism surround the cylindrical cavity and are sequentially arranged along the axial direction of the cylindrical cavity;

the speed reduction, distance increase and driving mechanism comprises a motor, a speed reduction mechanism and a driving sleeve, and the motor is in driving connection with the driving sleeve through the speed reduction mechanism; the driving sleeve is arranged around the driving base, the speed reducing mechanism and the cylindrical cavity and can rotate by taking the axis of the driving sleeve as a shaft under the driving action of the motor;

the sealing assembly, the anchoring and internal locking mechanism are in driving connection with the driving sleeve; the sealing assembly is provided with a rubber cylinder arranged around the cylindrical cavity, the anchoring and internal locking mechanism is provided with slips arranged around the cylindrical cavity, under the rotary driving action of the driving sleeve, the rubber cylinder can be radially expanded towards the direction close to the inner wall of the outer pipeline firstly, and then the slips radially move to be in contact with the inner wall of the outer pipeline.

The speed reduction, distance increase and driving mechanism further comprises a moving shaft, the moving shaft is arranged around the driving base and the cylindrical cavity, the sealing assembly and the anchoring and internal locking mechanism are in driving connection with the driving sleeve through the moving shaft, the sealing assembly and the anchoring and internal locking mechanism are sequentially arranged around the moving shaft and along the axial direction of the cylindrical cavity, the sealing assembly is provided with a rubber cylinder arranged around the moving shaft, and the anchoring and internal locking mechanism is provided with slips arranged around the moving shaft; one side of the driving sleeve is provided with a radial clearance with the driving base, one side of the traveling shaft is provided with a traveling part, the radial outer wall of the traveling part is in driving connection with the inner wall of the driving base, and the traveling shaft can axially move along the outer wall of the cylindrical cavity under the rotating driving action of the driving sleeve; the rubber cylinder and the slips can be radially expanded to be in contact with the inner wall of the external pipeline under the driving action of the traveling shaft.

Further, the rubber cylinder and the slips are respectively provided with conical surfaces at two axial sides; the anchoring and internal locking mechanism further comprises a conical seat and a second sheath, wherein the conical seat and the second sheath are positioned on two axial sides of the slip and arranged around the action shaft, and one axial side part of the conical seat is in a shape matched with the slip; the sealing assembly is also provided with a first sheath arranged around the action shaft, the first sheath is adjacent to the action part, and the first sheath and the second sheath are respectively positioned at two axial sides of the rubber cylinder; one axial side part of the first sheath is provided with a shape matched with the rubber cylinder, and two axial sides of the second sheath are respectively provided with shapes matched with the rubber cylinder and the slips; the second sheath and the conical seat can extrude the rubber cylinder and the slips under the driving action of the traveling shaft to respectively radially expand and move and contact with the inner wall of the external pipeline;

the traveling shaft moves towards the direction far away from the first sheath under the rotation driving action of the driving sleeve, drives the second sheath to extrude the rubber cylinder to radially expand, and drives the conical seat to extrude the slip to radially move; the conical seat is provided with an extending part which extends towards the second sheath and is in contact with the action shaft surface, the extending part is provided with a first limiting groove corresponding to the slip in position, and a limiting lock ring is arranged in the first limiting groove;

the second sheath is provided with a lock ring sleeve, the lock ring sleeve is positioned at one end of the second sheath facing the conical seat, and the second sheath is sleeved with the slips through the lock ring sleeve;

the surfaces of the second sheath, which are in contact with the slips, and the surfaces of the slips, which are in contact with the conical seat, are respectively provided with mutually matched sliding guide structures;

the sliding guide structure is a sliding guide rib groove which is locked with each other.

Furthermore, the speed reduction, distance increase and driving mechanism is also provided with a thrust bearing and a bearing end seat which are mutually adjacent, and the radial two sides of the thrust bearing and the radial two sides of the bearing end seat are respectively contacted with the driving base and the driving sleeve;

the support assembly comprises a first support assembly and a second support assembly, the first support assembly is provided with a first support wheel assembly and a first support seat which are fixedly connected with each other, the first support seat is arranged around the drive base and the bearing end seat, and the first support seat is also connected with the bearing end seat; the second support assembly is provided with a second support wheel assembly and a second support which are fixedly connected with each other, and the second support is also connected with the cylindrical cavity.

the support assembly comprises a first support assembly and a second support assembly, the first support assembly is provided with a first support leather cup and a first support seat which are fixedly connected with each other, the first support seat is arranged around the drive base and the bearing end seat, and the first support seat is also connected with the bearing end seat; the second support assembly is provided with a second support leather cup and a second support which are fixedly connected with each other, and the second support is also connected with the cylindrical cavity.

Further or preferably, the speed reducing mechanism includes: a drive gear and an intermediate gear in mesh with each other; the driving gear is in driving connection with the motor through the driving shaft; an intermediate shaft connected with the intermediate gear; the intermediate gear is also meshed with the driving sleeve.

Further or preferably, the speed reducing mechanism further comprises: the driving shaft front sleeve, the driving shaft rear sleeve, the middle shaft front sleeve and the middle shaft rear sleeve; the driving shaft front sleeve, the driving gear and the driving shaft rear sleeve cover the driving shaft; the middle shaft front sleeve, the middle gear and the middle shaft rear sleeve cover the middle shaft.

Further or preferably, the rubber sleeve is provided with an inner cavity, and one side of the inner cavity is adjacent to the moving shaft; the first sheath is provided with a flow guide hole, one end of the flow guide hole is communicated with the inner cavity, and the other end of the flow guide hole is communicated with the side wall of the first sheath.

Further or preferably, the master control assembly further comprises:

the bin cover plate is connected with one end, close to the anchoring and internal locking mechanism, of the cylindrical cavity, the first joint axially penetrates through the bin cover plate, and the first joint and the bin cover plate jointly form one end part of the intelligent control pipeline plugging device;

the second joint is connected with one end of the driving base to form the other end of the intelligent control pipeline plugging device;

the intelligent control assembly comprises an electrical element and a built-in power supply which are connected with each other through circuits, the electrical element is positioned in the cylindrical cavity and comprises a main circuit board, a temperature sensor, a humidity sensor, a first pressure sensor, a second pressure sensor and a signal transceiving module; the temperature sensor, the humidity sensor, the first pressure sensor, the second pressure sensor and the signal transceiving module are respectively in communication connection with the main circuit board.

The invention provides an intelligent control pipeline plugging device, which comprises a main control assembly, a speed reduction distance increasing and driving mechanism, a support assembly, a sealing assembly and an anchoring and internal locking mechanism, wherein the speed reduction distance increasing and driving mechanism adopts a multi-stage planetary speed reduction mechanism and a transmission thread structure to replace a hydraulic transmission mechanism in the prior art, and has the following beneficial effects: the high-rotating-speed and small-torque output by the motor is converted into axial thrust required by radial expansion of slips and a rubber cylinder; the high-rotating-speed small torque output by the motor is converted into axial tension required by radial shrinkage of slips and a rubber cylinder; under the action of axial force, the radial expansion and contraction of the slips and the rubber cylinder can be carried out step by step; the actions of radial expansion and contraction of the slips and the rubber cylinder can be repeatedly carried out step by step; the rubber cylinder is radially expanded before the slips, so that the sealing effect is better, and the slips are relatively easy to recover; collecting and transmitting data such as pressure and temperature at two ends; the power supply can be self-contained and externally hung; the intelligent control plugging device provided by the invention has the advantages of compact structure and light weight, the leather cup abrasion is slowed down, and the effective running distance is increased; the sealing is reliable, and the continuous operation can be realized in the pipeline; need not to go up the trompil on the pipeline, guaranteed the integrality of pipeline, reduced the operation degree of difficulty, saved the effect of maintenance duration and labour cost simultaneously greatly.

Drawings

Fig. 1 is a sectional schematic view of a first embodiment of an intelligent control occluder provided by the present invention;

FIG. 2 is an enlarged partial view of the left side of FIG. 1;

FIG. 3 is an enlarged view of the middle of FIG. 1;

FIG. 4 is an enlarged partial view of the right side of FIG. 1;

fig. 5 is a sectional schematic view of a second embodiment of the intelligent control occluder provided in the present invention;

FIG. 6 is an enlarged partial view of the left side of FIG. 5;

FIG. 7 is an enlarged view of the middle of FIG. 5;

fig. 8 is a partially enlarged view of the right side of fig. 5.

In the figure:

1. the main control assembly 11, the driving base 12, the cylindrical cavity 13, the first joint 14, the bin cover plate 15, the second joint 16, the first pressure sensor 17 and the second pressure sensor;

2. the speed reduction and distance increase driving mechanism 21, the motor 22, the driving sleeve 23, the moving shaft 231, the moving part 24, the thrust bearing 25, the bearing end seat 26, the driving gear 27, the driving shaft 271, the driving shaft front sleeve 272, the driving shaft rear sleeve 28, the intermediate gear 29, the intermediate shaft 291, the intermediate shaft front sleeve 292 and the intermediate shaft rear sleeve;

3. the sealing assembly 31, the rubber sleeve 311, the inner cavity 32, the first sheath 321 and the flow guide hole;

4. the anchoring and internal locking mechanism 41, the slips 42, the conical seat 421, the extension 422, the first limit groove 43, the second sheath 431, the lock ring sleeve 44, the limit lock ring 45 and the sliding guide structure;

51. the bearing assembly comprises a first support assembly 511, a first support wheel assembly 512, a first support 513, a first support cup 52, a second support assembly 521, a second support wheel assembly 522, a second support 523 and a second support cup.

Detailed Description

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-8, the present invention provides an intelligent pipeline plugging device, which includes: the device comprises a main control assembly 1, a speed reduction distance increasing and driving mechanism 2, a supporting assembly, a sealing assembly 3 and an anchoring and internal locking mechanism 4;

the main control assembly 1 is provided with a driving base 11, a cylindrical cavity 12 is arranged in the driving base 11, and in the embodiment, the driving base 11 and a central shaft of the cylindrical cavity 12 together form a central shaft of the intelligent control pipeline plugging device; an intelligent control assembly can be arranged in the space of the cylindrical cavity 12; the support assemblies are respectively positioned on two axial sides of the intelligent control pipeline plugging device; the sealing assembly 3 and the anchoring and internal locking mechanism 4 surround the cylindrical cavity 12, are sequentially arranged along the axial direction of the cylindrical cavity 12 and are mutually adjacent; it should be understood that axial refers to the direction along the axis of the central axis of the intelligent pipeline plugging device, and corresponding to the axial, radial refers to the direction along the diameter of the intelligent pipeline plugging device, both of which are defined as such in the following description;

the speed reduction, distance increase and driving mechanism 2 comprises a motor 21, a speed reduction mechanism and a driving sleeve 22, wherein the motor 21 is positioned at one end, adjacent to the driving base 11, in the cylindrical cavity 12 and is in driving connection with the driving sleeve 22 through the speed reduction mechanism; the driving sleeve 22 is arranged around the driving base 11, the speed reducing mechanism and the cylindrical cavity 12, and the driving sleeve 22 can rotate by taking the axis of the driving sleeve 22 (the driving sleeve 22, the sealing assembly 3, the anchoring and internal locking mechanism 4 are coaxially arranged with the driving base 11 and the cylindrical cavity 12) as the shaft under the driving action of the motor 21; in the embodiment provided by the present invention, the motor 21 is preferably a low speed motor 21; in addition, the motor 21 can be electrically connected with the intelligent control assembly and can also be independently connected with an external control circuit;

the sealing assembly 3 and the anchoring and internal locking mechanism 4 are in driving connection with the driving sleeve 22; the sealing assembly 3 has a rubber cylinder 31 arranged around the cylindrical cavity 12, and the anchoring and internal locking mechanism 4 has slips 41 arranged around the cylindrical cavity 12;

under the rotation driving action of the driving sleeve 22, the rubber cylinder 31 can be radially expanded to contact with the inner wall of the outer pipeline, and the slips 41 then radially move to contact with the inner wall of the outer pipeline, in this embodiment, the speed reduction, distance increase and driving mechanism 2 further comprises a moving shaft 23, the moving shaft 23 is arranged around the driving base 11 and the cylindrical cavity 12, the sealing assembly 3 and the anchoring and internal locking mechanism 4 are in driving connection with the driving sleeve 22 through the moving shaft 23, the sealing assembly 3 and the anchoring and internal locking mechanism 4 are arranged around the moving shaft 23 and sequentially along the axial direction of the cylindrical cavity 12, the sealing assembly 3 has the rubber cylinder 31 arranged around the moving shaft 23, and the anchoring and internal locking mechanism 4 has the slips 41 arranged around the moving shaft 23; the side of the driving sleeve 22 adjacent to the speed reducing mechanism has a radial clearance with the driving base 11, the traveling shaft 23 has a traveling part 231 protruding radially on the side, the radial outer wall of the traveling part 231 is in driving connection with the inner wall of the driving sleeve 22, in this embodiment, the traveling part 231 and the driving sleeve 22 are screwed together, so that the traveling shaft 23 can move axially along the outer walls of the driving base 11 and the cylindrical cavity 12 under the rotating driving action of the driving sleeve 22; the rubber cylinder 31 and the slips 41 can radially expand and radially move to be in contact with the inner wall of the outer pipeline under the driving action of the traveling shaft 23;

the anchoring and internal locking mechanism 4 further comprises a conical seat 42 and a second sheath 43 which are positioned on both axial sides of the slip 41 and are arranged around the travelling shaft 23, the sealing assembly 3 further comprises a first sheath 32 which is arranged around the travelling shaft 23, the first sheath 32 is adjacent to the travelling part 231, and the first sheath 32 and the second sheath 43 are respectively positioned on both axial sides of the rubber cylinder 31 (the second sheath 43 is positioned between the rubber cylinder 31 and the slip 41); the rubber cylinder 31 and the slips 41 respectively have conical surfaces on two axial sides, as shown in fig. 4, 5, 7 and 8, the rubber cylinder 31 is in a shape gradually expanding from outside to inside (radial direction), the slips 41 are in a shape gradually contracting from outside to inside (radial direction), correspondingly, the side parts of the first sheath 32 and the second sheath 43 corresponding to the rubber cylinder 31 are in a shape matched with the rubber cylinder 31, the side parts of the second sheath 43 and the conical seat 42 corresponding to the slips 41 are in a shape matched with the slips 41, and the two sides of the second sheath 43 are in shapes matched with the rubber cylinder 31 and the slips 41 respectively; with the arrangement, the second sheath 43 and the conical seat 42 can press the rubber cylinder 31 and the slips 41 to radially expand and move (successively) and contact with the inner wall of the external pipeline respectively under the driving action of the traveling shaft 23 (the traveling shaft 23 moves axially).

Specifically, the traveling shaft 23 and the driving sleeve 22 have an axial gap at a side portion facing the speed reduction mechanism, and the driving sleeve 22 rotates to drive the traveling shaft 23 to move toward the speed reduction mechanism (in a direction away from the first sheath 32); in this embodiment, the conical seat 42 has an extension 421 extending toward the second sheath 43 and in surface contact with the traveling shaft 23, the extension 421 having a first stop recess 422 positioned corresponding to the slips 41, the first stop recess 422 having a stop lock ring 44 therein, the stop lock ring 44 preferably being of an elastomeric material, retracted within the first stop recess 422; when the limit lock ring 44 is positioned in the first limit groove 422, the limit lock ring 44 is also in surface contact with the second sheath 43, namely, the limit lock ring 44 has the function of limiting the second sheath 43 and the conical seat 42 from approaching each other; when the traveling shaft 23 moves, the second sheath 43, the rubber cylinder 31, the slip 41 and the conical seat 42 are driven to move together, and as the rubber cylinder 31 is firstly extruded to generate elastic deformation, the rubber cylinder 31 is in contact with the inner wall of the external pipeline before the slip 41; then, the limiting lock ring 44 is elastically deformed and separated from the first limiting groove 422 under the continuous extrusion action, the conical seat 42 and the second sheath 43 move in opposite directions (namely, the distance between the conical seat and the second sheath is reduced), the slips 41 move outwards along the inclined planes of the second sheath 43 and the conical seat 42 in the radial direction and are in contact with the inner wall of the external pipeline, and the intelligent control pipeline plugging device starts plugging operation; when the operation is finished and the intelligent control pipeline plugging device is unsealed, the motor 21 rotates reversely, the driving sleeve 22 drives the driving shaft 23 to move reversely, the slips 41 are retracted, the limit lock ring 44 returns to the first limit groove 422, at the moment, the second sheath 43 is driven by the conical seat 42 to move together under the limiting action of the limit lock ring 44, the extrusion action on the rubber cylinder 31 is gradually reduced, the shape of the rubber cylinder 31 is recovered, and the unsealing is finished; the intelligent control pipeline plugging device is arranged, when the slips 41 move radially, the rubber cylinder 31 continuously extrudes the side wall of the external pipeline, and after the slips 41 reach the anchoring force, the plugging effect of the intelligent control pipeline plugging device is optimal; in the deblocking process after the plugging operation, the slips 41 are recovered relatively smoothly.

To further ensure that the limit lock ring 44 can be successfully returned in the unsealing operation, the second sheath 43 is provided with a lock ring sleeve 431, the lock ring sleeve 431 is positioned at one end of the second sheath 43 facing the conical seat 42, the slips 41 are positioned above the lock ring sleeve 431, the lock ring sleeve 431 covers the lock ring 44, and the lock ring sleeve 431 has a pushing and guiding function in the returning process of the lock ring 44;

in this embodiment, the surfaces of the second sheath 43, which are in contact with the slips 41, and the surfaces of the slips 41, which are in contact with the conical seat 42, are respectively provided with mutually matched sliding guide structures 45, and the sliding guide structures are used for enabling the second sheath 43, the conical seat 42 and the slips 41 to move relatively smoothly in relation to each other during the process that the second sheath 43 and the conical seat 42 push the slips 41 to anchor together; the sliding guiding structure 45 is preferably a sliding guiding rib groove, specifically a concave/convex guiding rib groove with a double inner oblique edge structure, which is respectively arranged on the surface where the second sheath 43 and the slip 41 are in contact with each other and the surface where the slip 41 and the conical seat 42 are in contact with each other, and when the second sheath 43, the conical seat 42 and the slip 41 are in interaction, the movement of the three is along the extending direction of the rib groove structure.

In the present embodiment, the deceleration, distance-increasing and driving mechanism 2 further has a thrust bearing 24 and a bearing end seat 25 adjacent to each other, and both sides in the radial direction of the thrust bearing 24 and the bearing end seat 25 are respectively in contact with the driving base 11 and the driving sleeve 22; the support assembly in this embodiment comprises a first support assembly 51 and a second support assembly 52, the first support assembly 51 has a first support wheel assembly 511 and a first support 512 fixedly connected to each other, the first support 512 is disposed around the driving sleeve 22 and the bearing end seat 25, and the first support 512 is further connected to the bearing end seat 25; the second support assembly 52 has a second support wheel assembly 521 and a second support 522 fixedly connected to each other, and the second support 522 is further connected to the cylindrical cavity 12;

in one embodiment, as shown in fig. 1-4, the support assembly comprises a first support assembly 51 and a second support assembly 52, the first support assembly 51 has a first support wheel assembly 511 and a first support 512 fixedly connected to each other, the first support 512 is disposed around the driving sleeve 22 and the bearing end seat 25, and the first support 512 is further connected to the bearing end seat 25; the second support assembly 52 is provided with a second support wheel assembly 521 and a second support 52 which are fixedly connected with each other, and the second support 52 is also connected with the cylindrical cavity 12;

in another embodiment, as shown in fig. 5-8, the support assembly comprises a first support assembly 51 and a second support assembly 52, the first support assembly 51 has a first support cup 513 and a first support block 512 fixedly connected to each other, the first support block 512 is disposed around the driving sleeve 22 and the bearing end block 25, and the first support block 512 is further connected to the bearing end block 25; the second support assembly 52 has a second support cup 523 and a second support 522 fixedly connected to each other, and the second support 522 is further connected to the cylindrical cavity 12.

In the embodiment provided by the present invention, the reduction mechanism is a gear reduction transmission mechanism, for example, in one form, it is a multi-stage gear reduction transmission mechanism, specifically, a drive gear 26 and an intermediate gear 28 that mesh with each other; a drive shaft 27, through which drive gear 26 is drivingly connected to motor 21; an intermediate shaft 29 connected with the intermediate gear 28; the intermediate gear 28 is also meshed with the driving sleeve 22; as shown in fig. 1, 2, 5 and 6, a driving shaft 27 penetrates through the end part of the cylindrical cavity of the driving base 11 to be connected with the motor 21 in the cylindrical cavity 12, a driving gear 26 is sleeved on the driving shaft 27, the end part of the cylindrical cavity of the driving base 11 is positioned between the driving gear 26 and the motor 21, an intermediate gear 28, an intermediate shaft 29, the driving gear 26 and the driving shaft 27 are arranged along the radial direction of the intelligent control pipeline plugging device, and the driving gear 26 is meshed with the driving sleeve 22;

in order to further ensure the reliability of the gear transmission process, the speed reducing mechanism further comprises: a driving shaft front sleeve 271, a driving shaft rear sleeve 272, a middle shaft front sleeve 291 and a middle shaft rear sleeve 292; the driving shaft front sleeve 271 is positioned between the driving gear 26 and the motor 21, the driving shaft rear sleeve 272 is positioned at the other end of the driving shaft 27, and the driving shaft front sleeve 271, the driving shaft rear sleeve and the driving gear 26 jointly cover the driving shaft 27; the middle shaft front sleeve 291 is located between the middle gear 28 and the drive base 11, the middle shaft rear sleeve 292 is located at the other end of the middle shaft 29, and the middle shaft front sleeve 291, the middle gear 28 and the middle shaft rear sleeve 292 jointly cover the middle shaft 29.

In the embodiment provided by the invention, the rubber cylinder 31 is provided with an inner cavity 311, and one side of the inner cavity 311 is adjacent to the moving shaft 23; the first sheath 32 has a flow guiding hole 321, one end of the flow guiding hole 321 is communicated with the inner cavity 311, the other end is communicated with the side wall of the first sheath 32, and a fluid medium is introduced into the inner cavity 311 of the rubber cylinder 31 through the flow guiding hole 321.

In the embodiment provided by the present invention, the master control assembly 1 further comprises:

the first joint 13 and the cover plate 14, the cover plate 14 is connected with the cylindrical cavity 12 in a sealing manner, and is also connected with the second support 522, the first joint 13 axially penetrates through the cover plate 14, the first joint 13 is provided with a first pressure sensor 16, and the first joint 13 and the cover plate 14 jointly form one end part of the intelligent control pipeline plugging device; in some preferred embodiments, the first connector 13 may be further electrically connected to an external power source;

a second joint 15, wherein the second joint 15 is connected with one end of the driving base 11 to form the other end of the intelligent control pipeline plugging device;

the intelligent control assembly comprises electrical components and a built-in power supply which are mutually connected through circuits, wherein the electrical components are positioned in the cylindrical cavity 12 and comprise a main circuit board, a temperature sensor, a humidity sensor, a first pressure sensor 16, a second pressure sensor 17 and a signal transceiving module; the temperature sensor, the humidity sensor, the first pressure sensor 16, the second pressure sensor 17 and the signal transceiving module are respectively in communication connection with the main circuit board; in the embodiment provided by the invention, the first connector 13 and the second connector 15 which are electrically connected with the components of the intelligent control assembly are also used for connecting with external equipment and an external power supply, such as an external control system, a pipe cleaner and the like.

In a second aspect, the invention provides a plugging tool string for pipeline plugging operation, which comprises the intelligent control pipeline plugging device, an external power supply and a pipe cleaner, wherein the intelligent control pipeline plugging device is connected with the external power supply and a control circuit of the pipe cleaner.

The plugging tool string provided by the invention can be used in the pipe replacement operation of the pipeline near the front end and near the tail end, the intelligent control pipeline plugging device is connected with a pipe cleaner and an external power supply through the first connector 13 to form a plugging tool string, and the plugging tool string enters the pipeline through an external receiving and sending barrel; when the medium pushes and runs to a designated position, the intelligent control assembly gives a deceleration instruction to the pipe cleaner firstly, the pipeline stops conveying or reduces the input quantity, and the plugging tool string stops running; after the intelligent control assembly confirms to stop, a seating instruction is sent out again; the motor 21 drives the moving shaft 23 and the conical seat 42 to enable the first sheath 32 and the second sheath 43 to move to compress the rubber barrel 31 to expand and contact with the inner wall of the pipeline, the conical seat 42 and the second sheath 43 push the slip 41 to move radially and to be in close contact with the inner wall of the pipeline, and along with the rise of the pressure at the rear end of the rubber barrel 31, (medium) hydraulic force enters the cavity 311 in the rubber barrel 31 through the plurality of flow guide holes 321 of the first sheath 32 to form differential pressure force and acts on the second sheath 43 to enable the slip 41 to be meshed with the inner wall of the pipeline to realize anchoring, the motor 21 stops rotating, the driving sleeve 22 and the moving shaft 23 form self locking, the conical seat 42 is prevented from moving backwards, and plugging is realized; the signal transceiver module can transmit pressure data of the front end and the rear end of the plugging tool string, judge the blocking condition, after being qualified, perform pipe replacement operation according to the industry standard, the intelligent control pipeline plugging device receives a deblocking command after the pipe replacement is finished, under the drive of the motor 21, the conical seat 42 is separated from the second sheath 43 to drive the slips 41 to be separated from the inner wall of the pipe and move inwards, and simultaneously release the compression force to the rubber cylinder 31, the medium in the cavity of the rubber cylinder 31 is discharged through the flow guide hole 321, the intelligent control pipeline plugging device performs deblocking, a pipe cleaner command is given, the pipeline starts to be conveyed, and the plugging tool string enters the transceiver under the push of the medium;

in another preferred embodiment, the application environment is to perform pipe replacement operation by plugging two ends of a damaged pipeline, in the embodiment, two plugging tool strings are sent into the pipeline by the receiving and sending barrel at intervals, so that the two tool strings are respectively positioned at two ends of the damaged position; after the plugging device is in place, the two tool strings are controlled to give a deceleration instruction to a pipe cleaner firstly, the pipeline stops conveying or reduces input quantity to stop the operation of the plugging tool string, the intelligent control assembly confirms that the plugging tool string stops, then a setting instruction is sent out, under the driving of the motor 21, the first sheath 32 and the second sheath 43 axially move to compress the rubber sleeve 31 to expand to be contacted with the pipe wall, the conical seat 42 and the two conical surfaces of the second sheath 43 push the slip 41 to radially displace to be tightly contacted with the inner wall of the pipe, the slip 41 is meshed with the inner wall of the pipe to realize anchoring along with the rise of the pressure at the rear end of the rubber sleeve 31, the motor 21 stops rotating, the driving sleeve 22 and the action shaft 23 form self locking to prevent the conical seat 42 from moving backwards to realize plugging, a signal receiving and sending module in the plugging device can transmit pressure data at the front end and the rear end of the plugging tool string, the plugging condition is judged, after the plugging device is qualified, the pipe replacing, under the drive of the motor 21, the conical seat 42 is separated from the second sheath 43, the slips 41 are driven to be separated from the inner wall of the pipe and move inwards, the compression force for the rubber cylinder 31 is released, the medium in the cavity of the rubber cylinder 31 is discharged through the flow guide hole 321, the two intelligent control pipeline plugging devices are unsealed, a speed increasing instruction is given to a pipe cleaner, the pipeline starts to convey two plugging tool strings, and the plugging tool strings enter the receiving and dispatching cylinder sequentially under the pushing of the medium.

The inventive concept is explained in detail herein using specific examples, which are given only to aid in understanding the core concepts of the invention. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are included in the scope of the present invention.

Claims

1. The utility model provides an intelligent control pipeline plugging device which characterized in that, this intelligent control pipeline plugging device includes: the device comprises a main control assembly, a speed reduction distance increasing and driving mechanism, a supporting assembly, a sealing assembly and an anchoring and internal locking mechanism;

the sealing assembly, the anchoring and internal locking mechanism are in driving connection with the driving sleeve; the sealing assembly is provided with a rubber cylinder arranged around the cylindrical cavity, the anchoring and internal locking mechanism is provided with slips arranged around the cylindrical cavity, under the rotary driving action of the driving sleeve, the rubber cylinder can be radially expanded towards the direction close to the inner wall of the outer pipeline firstly, and then the slips radially move to be in contact with the inner wall of the outer pipeline;

the speed reduction, distance increase and driving mechanism further comprises a traveling shaft, the traveling shaft is arranged around the driving base and the cylindrical cavity, the sealing assembly and the anchoring and internal locking mechanism are in driving connection with the driving sleeve through the traveling shaft, the sealing assembly and the anchoring and internal locking mechanism are sequentially arranged around the traveling shaft and along the axial direction of the cylindrical cavity, the sealing assembly is provided with a rubber cylinder arranged around the traveling shaft, and the anchoring and internal locking mechanism is provided with slips arranged around the traveling shaft; one side of the driving sleeve is provided with a radial clearance with the driving base, one side of the traveling shaft is provided with a traveling part, the radial outer wall of the traveling part is in driving connection with the inner wall of the driving sleeve, and the traveling shaft can axially move along the outer wall of the cylindrical cavity under the rotating driving action of the driving sleeve; the rubber cylinder and the slips can be radially expanded to be in contact with the inner wall of the external pipeline under the driving action of the traveling shaft.

2. The intelligent pipeline plugging device according to claim 1, wherein the rubber cylinder and the slips are respectively provided with conical surfaces at two axial sides; the anchoring and internal locking mechanism further comprises a conical seat and a second sheath, wherein the conical seat and the second sheath are positioned on two axial sides of the slip and arranged around the action shaft, and one axial side part of the conical seat is in a shape matched with the slip; the sealing assembly is also provided with a first sheath arranged around the action shaft, the first sheath is adjacent to the action part, and the first sheath and the second sheath are respectively positioned at two axial sides of the rubber cylinder; one axial side part of the first sheath is provided with a shape matched with the rubber cylinder, and two axial sides of the second sheath are respectively provided with shapes matched with the rubber cylinder and the slips; the second sheath and the conical seat can extrude the rubber cylinder and the slips under the driving action of the traveling shaft to respectively radially expand and move and contact with the inner wall of the external pipeline;

3. The intelligent control pipeline plugging device according to claim 2, wherein said deceleration, distance-increasing and driving mechanism further comprises a thrust bearing and a bearing end seat which are adjacent to each other, and the radial two sides of the thrust bearing and the bearing end seat are respectively contacted with said driving base and the driving sleeve;

4. The intelligent control pipeline plugging device according to claim 2, wherein said deceleration, distance-increasing and driving mechanism further comprises a thrust bearing and a bearing end seat which are adjacent to each other, and the radial two sides of the thrust bearing and the bearing end seat are respectively contacted with said driving base and the driving sleeve;

5. The intelligent pipeline plugging device according to any one of claims 1 to 4, wherein the deceleration mechanism comprises: a drive gear and an intermediate gear in mesh with each other; the driving gear is in driving connection with the motor through the driving shaft; an intermediate shaft connected with the intermediate gear; the intermediate gear is also meshed with the driving sleeve.

6. The intelligent pipeline plugging device of claim 5, wherein said deceleration mechanism further comprises: the driving shaft front sleeve, the driving shaft rear sleeve, the middle shaft front sleeve and the middle shaft rear sleeve; the driving shaft front sleeve, the driving gear and the driving shaft rear sleeve cover the driving shaft; the middle shaft front sleeve, the middle gear and the middle shaft rear sleeve cover the middle shaft.

7. The intelligent pipeline plugging device according to any one of claims 2 to 4, wherein the rubber cylinder is provided with an inner cavity, and one side of the inner cavity is adjacent to the moving shaft; the first sheath is provided with a flow guide hole, one end of the flow guide hole is communicated with the inner cavity, and the other end of the flow guide hole is communicated with the side wall of the first sheath.

8. The intelligent control pipeline plugging device according to any one of claims 1 to 4, wherein said main control assembly further comprises:

the intelligent control assembly comprises an electrical element and a built-in power supply which are mutually connected in a circuit manner, the electrical element is positioned in the cylindrical cavity and comprises a main circuit board, a temperature sensor, a humidity sensor, a first pressure sensor, a second pressure sensor and a signal transceiving module; the temperature sensor, the humidity sensor, the first pressure sensor, the second pressure sensor and the signal transceiving module are respectively in communication connection with the main circuit board.