阅读说明：本技术 一种管道智能封堵器及其封堵方法 (Intelligent pipeline plugging device and plugging method thereof ) 是由 王旱祥 孙秉宇 刘延鑫 程铭 杨世强 于 2019-09-23 设计创作，主要内容包括：本发明提供了一种管道智能封堵器及其封堵方法,包括第一封堵机构、第二封堵机构以及连接第一封堵机构和第二封堵机构的第一万向联轴器；第一封堵机构、第二封堵机构结构呈对称设置,且均包括封堵装置和动力装置,封堵装置和动力装置之间连接有第二万向联轴器,动力装置中设置有液压动力系统和信号收发装置,信号收发装置用于接收管道外界的控制信号从而控制液压动力系统工作,液压动力系统分别驱动封堵装置和第一万向联轴器动作,本发明通过上游发球端同时发送两个封堵头且能够在到达指定位置时分离,按照指令完成锚定动作与密封动作,从而分别封堵管道上游与下游的压力。(The invention provides an intelligent pipeline plugging device and a plugging method thereof, wherein the intelligent pipeline plugging device comprises a first plugging mechanism, a second plugging mechanism and a first universal coupler for connecting the first plugging mechanism and the second plugging mechanism; the first blocking mechanism and the second blocking mechanism are symmetrically arranged and respectively comprise a blocking device and a power device, a second universal coupling is connected between the blocking device and the power device, a hydraulic power system and a signal receiving and transmitting device are arranged in the power device, the signal receiving and transmitting device is used for receiving control signals outside a pipeline so as to control the hydraulic power system to work, and the hydraulic power system respectively drives the blocking device and the first universal coupling to act.)

1. The utility model provides a pipeline intelligence plugging device which characterized in that: the universal coupling comprises a first plugging mechanism, a second plugging mechanism and a first universal coupling for connecting the first plugging mechanism and the second plugging mechanism;

the first plugging mechanism and the second plugging mechanism are symmetrically arranged and respectively comprise a plugging device and a power device, a second universal coupling is connected between the plugging device and the power device, wherein,

the occlusion device comprises;

the power hydraulic cylinder comprises a cylinder body, a piston and a first piston rod connected with the piston;

The actuator disc is connected to one end, far away from the piston, of the first piston rod and is provided with an inner end face, an outer end face and a first cylinder part axially extending from the inner end face;

the bearing head is connected to the cylinder body and provided with an inner end face, an outer end face and a second cylinder part axially extending from the inner end face, and the inner circumferential surface of the second cylinder part is sleeved on the outer circumferential surface of the first cylinder part;

the movable cone is sleeved at the end part of the outer peripheral surface of the second cylinder part, a shearing nail is arranged between the inner peripheral surface of the movable cone and the outer peripheral surface of the second cylinder part, the outer peripheral surface of the movable cone is provided with a plurality of inclined surfaces, and the inclined surfaces are provided with slide rails;

The locking slips are wedge-shaped, sliding grooves which are connected with the sliding rails in a matched mode are formed in the inner surfaces of the locking slips, locking threads are formed in the outer surfaces of the locking slips, and the locking slips are movably connected with the outer section of the actuator disc;

The sealing device is sleeved on the outer peripheral surface of the second cylinder part between the pressure bearing head and the movable cone and is extruded by the extrusion end surface of the movable cone to be in a radial expansion state to realize plugging;

The power device comprises a shell, a first end cover and a second end cover are arranged at two ends of the shell respectively, the outer end face of the first end cover is connected with the outer end face of the actuator disc through a first universal coupling, a hydraulic power system and a signal receiving and transmitting device are arranged on one side inside the shell and used for receiving control signals outside a pipeline so as to control the hydraulic power system to work, a releasing mechanism is arranged on the other side inside the shell and penetrates through the second end cover and is connected with a first universal coupling, and the hydraulic power system is connected with a power hydraulic cylinder and the releasing mechanism respectively.

2. The intelligent pipeline plugging device according to claim 1, wherein: the outer terminal surface of pressure-bearing head, the outer terminal surface of executor dish, the outer terminal surface of the first end cover of casing and the outer terminal surface of the second end cover of casing all are provided with and support running gear, support running gear and include annular supporting seat, and annular supporting seat periphery is equidistant to be provided with a plurality of support frames, is provided with the sliding tray on the support frame, slides in the sliding tray and is provided with the stopper, is provided with first spring between stopper and the support frame, rotates on the stopper and is provided with the supporting wheel.

3. the intelligent pipeline plugging device according to claim 1, wherein: and a leather cup is arranged on the outer end face of the pressure bearing head on the second plugging mechanism, and the outer diameter of the leather cup is larger than the inner diameter of the pipeline.

4. The intelligent pipeline plugging device according to claim 1, wherein: the first universal coupler comprises a connecting rod, two ends of the connecting rod are respectively hinged with a hinged rod, and the end part of the hinged rod is provided with a clamping ring.

5. the intelligent pipeline plugging device according to claim 1, wherein: the second universal coupling comprises two fork heads which are hinged through a ball shaft, and through holes are formed in the axle centers of the fork heads and the ball shaft.

6. the intelligent pipeline plugging device according to claim 1, wherein: the releasing mechanism comprises a releasing hydraulic cylinder, a second piston rod is arranged in the releasing hydraulic cylinder, the movable end of the releasing hydraulic cylinder is connected with an inner sleeve, the inner sleeve is in threaded connection with a second end cover, a plurality of clamping grooves are formed in the outer circumference of the inner sleeve, a protruding block is clamped in each clamping groove, an outer sleeve is arranged on the outer circumference of the inner sleeve, a second spring is arranged between each outer sleeve and each protruding block, each protruding block extends towards the inner circumference of the outer sleeve under the pretightening force of the corresponding second spring, and the protruding blocks are clamped with the clamping rings at the end portions.

7. The intelligent pipeline plugging device according to claim 1, wherein: the hydraulic power system comprises a control module, a battery pack and a hydraulic loop, wherein the input end of the control module is connected with the signal transceiver, the output end of the control module is connected with the hydraulic loop, and the battery pack supplies power for the signal transceiver, the control module and the hydraulic loop respectively.

8. The intelligent pipeline plugging device according to claim 7, wherein: the hydraulic circuit comprises an oil tank, a hydraulic pump, a two-position one-way electromagnetic valve and a three-position four-way electromagnetic directional valve, one end of the hydraulic pump is connected with the mailbox, the other end of the hydraulic pump is respectively connected with the two-position one-way electromagnetic valve and the three-position four-way electromagnetic directional valve, a working oil port of the three-position four-way electromagnetic directional valve is connected with the power hydraulic cylinder, and a working oil port of the two-position one-way.

9. the intelligent pipeline plugging device according to claim 1, wherein: the sealing device comprises a first sealing rubber cylinder and a second sealing rubber cylinder, the rubber cylinders are sleeved on the outer peripheral surface of the second cylinder part between the bearing head and the movable cone, a baffle ring is arranged between the first sealing rubber cylinder and the second sealing rubber cylinder, and the first sealing rubber cylinder and the second sealing rubber cylinder are both made of nitrile rubber.

10. the plugging method of the intelligent pipeline plugging device according to any one of claims 1 to 9, wherein:

s1, installing an off-pipeline communication device: an outside-pipe communication device is arranged at a proper position in front of and behind the pipe section to be isolated, so that the intelligent plugging device in the pipe can smoothly receive various command actions.

S2, serving by the upstream pipeline station: the first pipeline intelligent plugging device and the second pipeline intelligent plugging device are connected through a universal joint, a ball is sent into a pipeline through a ball sending end of a pipe cleaner, and the first pipeline intelligent plugging device and the second pipeline intelligent plugging device move towards a downstream end under the pushing of a pipeline medium.

S3, anchoring the upstream pipeline intelligent plugging device: when the specified position 1 (namely the upstream position) is reached, the first signal transmitting device gives an anchoring command to the first pipeline intelligent plugging device through an extremely low frequency electromagnetic pulse signal (ELF). The hydraulic power system of the first intelligent pipeline plugging device starts to work, and the first intelligent pipeline plugging device is anchored at the upstream of the pipe section to be isolated under the first working pressure. And simultaneously releasing the second intelligent pipeline plugging device to enable the second intelligent pipeline plugging device to continuously move along the pipeline under the pressure of the pipeline.

s4, anchoring the downstream pipeline intelligent plugging device: when the second pipeline intelligent plugging device reaches the designated position 2, the second signal transmitting device gives an anchoring instruction to the second pipeline intelligent plugging device through an extremely-low-frequency electromagnetic pulse signal (ELF), and similarly, the second pipeline intelligent plugging device is anchored at the downstream of the pipe section to be isolated.

s5, sealing the intelligent pipeline plugging device: after the first intelligent pipeline plugging device and the second intelligent pipeline plugging device are respectively anchored at the designated positions, sealing instructions can be issued through the communication devices outside the pipelines respectively. First pipeline intelligence plugging device passes through electromagnetic overflow valve adjustment power hydraulic system pressure, at first seals the isolated upstream end medium of action, seals second pipeline intelligence plugging device afterwards, and isolated downstream end medium can be maintained work such as salvageing to isolated pipeline section this moment.

S6, deblocking: after the pipeline is replaced and maintained, the pipeline external communication device sends an unsealing instruction to start the motor again, and the hydraulic cylinder reversely acts through the reversing of the electromagnetic reversing valve.

and S7, completing the unsealing action, collecting the ball and dismantling the communication device outside the pipeline, wherein the first intelligent pipeline plugging device and the second intelligent pipeline plugging device flow into a downstream pipeline station to a ball collecting end of a pipeline cleaner to collect the ball under the pushing of the medium in the pipeline.

Technical Field

The invention relates to the technical field of marine equipment, in particular to an intelligent pipeline plugging device and a plugging method thereof.

background

As the population of people on earth grows faster and faster, and the demand for resources by human beings is increasing, people have begun to move to the ocean for survival and development. The most important resource of the ocean is petroleum, and due to the complex and changeability of the ocean environment, the damage of the petroleum gas conveying pipeline caused by tide, earthquake, material defects and the like can be avoided in the long-term service process of the submarine petroleum gas conveying pipeline, so that the leakage of the petroleum gas can be caused, the ocean ecological environment is polluted and damaged, even the personal safety of offshore operators is endangered, and the great negative influence can be brought to the society.

at present, the pipeline plugging device is mostly adopted to perform pipeline plugging operation in China to realize the maintenance of the pipeline, the intelligent pipeline plugging device is put into the pipeline through a ball serving end of an upstream pipe cleaner, the intelligent pipeline plugging device is pushed to advance by a pipeline medium, after a pipe section to be plugged is reached, a built-in micro hydraulic system is started through the control of an extremely-frequency electromagnetic pulse signal (ELF), the brake plugging is realized through a clamping jaw structure and a rubber cylinder structure, and the purpose of isolating the pressure of the upstream pipeline is achieved. However, the pressure downstream of the pipeline is often not completely exhausted for some reason (such as a difference in elevation), which may have a great influence on the construction work. Therefore, how to synchronously plug the upstream and downstream pipelines so as to realize the maintenance between the upstream and downstream pipelines is a problem which needs to be solved urgently at the present stage.

Disclosure of Invention

the invention aims to provide an intelligent pipeline plugging device and a plugging method thereof.

In order to achieve the purpose, the invention provides the following technical scheme:

an intelligent pipeline plugging device comprises a first plugging mechanism, a second plugging mechanism and a first universal coupler for connecting the first plugging mechanism and the second plugging mechanism;

The first plugging mechanism and the second plugging mechanism are symmetrically arranged and respectively comprise a plugging device and a power device, a second universal coupling is connected between the plugging device and the power device, wherein,

the occlusion device comprises;

the power hydraulic cylinder comprises a cylinder body, a piston and a first piston rod connected with the piston;

The actuator disc is connected to one end, far away from the piston, of the first piston rod and is provided with an inner end face, an outer end face and a first cylinder part axially extending from the inner end face;

The bearing head is connected to the cylinder body and provided with an inner end face, an outer end face and a second cylinder part axially extending from the inner end face, and the inner circumferential surface of the second cylinder part is sleeved on the outer circumferential surface of the first cylinder part;

the movable cone is sleeved at the end part of the outer peripheral surface of the second cylinder part, a shearing nail is arranged between the inner peripheral surface of the movable cone and the outer peripheral surface of the second cylinder part, the outer peripheral surface of the movable cone is provided with a plurality of inclined surfaces, and the inclined surfaces are provided with slide rails;

The locking slips are wedge-shaped, sliding grooves which are connected with the sliding rails in a matched mode are formed in the inner surfaces of the locking slips, locking threads are formed in the outer surfaces of the locking slips, and the locking slips are movably connected with the outer section of the actuator disc;

The sealing device is sleeved on the outer peripheral surface of the second cylinder part between the pressure bearing head and the movable cone and is extruded by the extrusion end surface of the movable cone to be in a radial expansion state to realize plugging;

the power device comprises a shell, a first end cover and a second end cover are arranged at two ends of the shell respectively, the outer end face of the first end cover is connected with the outer end face of the actuator disc through a first universal coupling, a hydraulic power system and a signal receiving and transmitting device are arranged on one side inside the shell and used for receiving control signals outside a pipeline so as to control the hydraulic power system to work, a releasing mechanism is arranged on the other side inside the shell and penetrates through the second end cover and is connected with a first universal coupling, and the hydraulic power system is connected with a power hydraulic cylinder and the releasing mechanism respectively.

further, the outer terminal surface of pressure-bearing head, the outer terminal surface of executor dish, the outer terminal surface of the first end cover of casing and the outer terminal surface of the second end cover of casing all are provided with and support running gear, support running gear and include annular supporting seat, and annular supporting seat periphery is equidistant to be provided with a plurality of support frames, is provided with the sliding tray on the support frame, slides in the sliding tray and is provided with the stopper, is provided with first spring between stopper and the support frame, rotates on the stopper and is provided with the supporting wheel.

Furthermore, a leather cup is arranged on the outer end face of the pressure bearing head on the second plugging mechanism, and the outer diameter of the leather cup is larger than the inner diameter of the pipeline.

Further, a universal coupling comprises a connecting rod, two ends of the connecting rod are respectively hinged with a hinged rod, and a clamping ring is arranged at the end part of the hinged rod.

Furthermore, the second universal coupling comprises two forks, the forks are hinged through a ball shaft, and through holes are formed in the axle centers of the forks and the ball shaft.

Further, the release mechanism comprises a release hydraulic cylinder, a second piston rod is arranged in the release hydraulic cylinder, the movable end of the release hydraulic cylinder is connected with an inner sleeve, the inner sleeve is in threaded connection with a second end cover, a plurality of clamping grooves are formed in the outer circumference of the inner sleeve, a protruding block is clamped in the clamping grooves, an outer sleeve is arranged on the outer circumference of the inner sleeve, a second spring is arranged between the outer sleeve and the protruding block, the protruding block extends towards the inner circumference of the outer sleeve under the pre-tightening force of the second spring, and the protruding block is clamped with a clamping ring at the end of a hinge rod.

furthermore, the hydraulic power system comprises a control module, a battery pack and a hydraulic circuit, wherein the input end of the control module is connected with the signal transceiver, the output end of the control module is connected with the hydraulic circuit, and the battery pack supplies power for the signal transceiver, the control module and the hydraulic circuit respectively.

Furthermore, the hydraulic circuit comprises an oil tank, a hydraulic pump, a two-position one-way electromagnetic valve and a three-position four-way electromagnetic directional valve, one end of the hydraulic pump is connected with the mailbox, the other end of the hydraulic pump is respectively connected with the two-position one-way electromagnetic valve and the three-position four-way electromagnetic directional valve, a working oil port of the three-position four-way electromagnetic directional valve is connected with the power hydraulic cylinder, and a working oil port of the two-position one-way electromagnetic valve.

Preferably, the sealing device comprises a first sealing rubber cylinder and a second sealing rubber cylinder, the rubber cylinders are sleeved on the outer peripheral surface of the second cylinder part between the pressure-bearing head and the movable cone, and a baffle ring is arranged between the first sealing rubber cylinder and the second sealing rubber cylinder.

preferably, the first sealing rubber cylinder and the second sealing rubber cylinder are both made of butadiene-acrylonitrile rubber, and the movable cone and the locking slip are both made of hard alloy steel.

The plugging method of the intelligent pipeline plugging device comprises the following steps,

S1, installing an off-pipeline communication device: an outside-pipe communication device is arranged at a proper position in front of and behind the pipe section to be isolated, so that the intelligent plugging device in the pipe can smoothly receive various command actions.

S2, serving by the upstream pipeline station: the first pipeline intelligent plugging device and the second pipeline intelligent plugging device are connected through a universal joint, a ball is sent into a pipeline through a ball sending end of a pipe cleaner, and the first pipeline intelligent plugging device and the second pipeline intelligent plugging device move towards a downstream end under the pushing of a pipeline medium.

S3, anchoring the upstream pipeline intelligent plugging device: when the specified position 1 (namely the upstream position) is reached, the first signal transmitting device gives an anchoring command to the first pipeline intelligent plugging device through an extremely low frequency electromagnetic pulse signal (ELF). The hydraulic power system of the first intelligent pipeline plugging device starts to work, the first intelligent pipeline plugging device is anchored at the upstream of a pipe section to be isolated under the first-stage working pressure, and meanwhile, the second intelligent pipeline plugging device is released and continues to move along the pipeline under the pipeline pressure.

S4, anchoring the downstream pipeline intelligent plugging device: when the second pipeline intelligent plugging device reaches the designated position 2, the second signal transmitting device gives an anchoring instruction to the second pipeline intelligent plugging device through an extremely-low-frequency electromagnetic pulse signal (ELF), and similarly, the second pipeline intelligent plugging device is anchored at the downstream of the pipe section to be isolated.

S5, sealing the intelligent pipeline plugging device: after the first intelligent pipeline plugging device and the second intelligent pipeline plugging device are respectively anchored at the designated positions, sealing instructions can be issued through the communication devices outside the pipelines respectively. First pipeline intelligence plugging device passes through electromagnetic overflow valve adjustment power hydraulic system pressure, at first seals the isolated upstream end medium of action, seals second pipeline intelligence plugging device afterwards, and isolated downstream end medium can be maintained work such as salvageing to isolated pipeline section this moment.

S6, deblocking: after the pipeline is replaced and maintained, the pipeline external communication device sends an unsealing instruction to start the motor again, and the hydraulic cylinder reversely acts through the reversing of the electromagnetic reversing valve.

and S7, completing the unsealing action, collecting the ball and dismantling the communication device outside the pipeline, wherein the first intelligent pipeline plugging device and the second intelligent pipeline plugging device flow into a downstream pipeline station to a ball collecting end of a pipeline cleaner to collect the ball under the pushing of the medium in the pipeline.

Compared with the prior art, the invention has the beneficial effects that:

through setting up first shutoff mechanism and second shutoff mechanism to utilize universal shaft coupling to carry out the flexonics, in getting into the pipeline through pig service end service ball. Under the push of pipeline medium, and under the action of front-back pressure difference generated by a leather cup arranged at the front end of the second plugging mechanism, the first plugging mechanism and the second plugging mechanism move towards the downstream end, when a plugging device in the first plugging mechanism reaches an upstream designated position, a signal transceiver inside the pipeline receives an extremely-low-frequency electromagnetic pulse signal (ELF) of a communication device outside the pipeline, so that an anchoring instruction is issued to the plugging device in the first plugging mechanism, namely, the hydraulic power system in the first plugging mechanism starts to work, and the plugging device in the first plugging mechanism is anchored at an upstream pipe section to be isolated under the first-stage working pressure. Meanwhile, the hydraulic power system drives the release mechanism to work, so that the first blocking mechanism is released and continues to move along the pipeline under the pressure of the pipeline. When the plugging device in the second plugging mechanism reaches a downstream designated position, the signal transceiver inside the pipeline receives an extremely low frequency electromagnetic pulse signal (ELF) of the communication device outside the pipeline, so that an anchoring instruction is given to the plugging device in the second plugging mechanism, namely, the hydraulic power system in the second plugging mechanism starts to work, so that the plugging device in the second plugging mechanism is anchored at the downstream of the pipe section to be isolated, and after the plugging device in the first plugging mechanism and the plugging device in the second plugging mechanism are respectively anchored at the designated positions, sealing instructions can be given through the signal transceiver inside the pipeline respectively. And a hydraulic power system in the first plugging mechanism drives a plugging device in the first plugging mechanism to perform a sealing action, so that the medium at the upstream end is isolated. Then the hydraulic power system in the second plugging mechanism drives the plugging device in the second plugging mechanism to perform sealing action, and a downstream end medium is isolated, at the moment, the isolated pipe section can be maintained and rush-repaired, after the replacement and maintenance of the pipeline are finished, the pipeline external signal transceiver sends a deblocking instruction, the hydraulic power system in the first plugging mechanism and the hydraulic power system in the second plugging mechanism perform deblocking action on the plugging device at the specified position respectively, and after the deblocking is finished, the plugging device flows into a downstream pipeline station under the pushing of the medium in the pipeline to collect balls at a ball collecting end of a pipe cleaner.

Compared with the prior art, the intelligent pipeline plugging device can enter from the ball sending end of the pipe cleaner, sends electromagnetic signals to the signal receiving device in the pipeline through the communication device outside the pipeline, accurately anchors the upstream and downstream positions of the pipeline to be repaired, and realizes the separation of the two plugging devices and the sealing of the pipeline, so that the maintenance of an isolated pipeline section is facilitated.

the foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

drawings

Fig. 1 is a schematic perspective view of an intelligent pipeline plugging device disclosed by the invention;

FIG. 2 is a schematic structural view of the occluding device disclosed in the present invention;

FIG. 3 is a schematic plan view of the occluding device disclosed in the present invention;

FIG. 4 is a schematic illustration of the construction of the locking slips disclosed herein;

FIG. 5 is a schematic structural diagram of a power plant disclosed in the present invention;

FIG. 6 is a schematic view of the internal structure of the power plant disclosed in the present invention;

fig. 7 is a schematic structural diagram of a first universal coupling disclosed in the present invention;

FIG. 8 is a schematic structural view of a second universal coupling according to the present disclosure;

Fig. 9 is a schematic structural view of the supporting and traveling device disclosed by the invention.

Fig. 10 is a state diagram of a ball-serving end of the intelligent pipeline plugging device disclosed by the invention during double-end plugging operation.

fig. 11 is a working process diagram of double-end plugging operation of the intelligent pipeline plugging device disclosed by the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Referring to the attached drawings 1-6, the embodiment of the invention discloses an intelligent pipeline plugging device, which comprises a first plugging mechanism 1, a second plugging mechanism 2 and a first universal coupler 3 for connecting the first plugging mechanism 1 and the second plugging mechanism 2;

The first plugging mechanism 1 and the second plugging mechanism 2 are symmetrically arranged and respectively comprise a plugging device 100 and a power device 200, a second universal coupling 300 is connected between the plugging device 100 and the power device 200, wherein,

The occlusion device 100 includes;

the power hydraulic cylinder 110 comprises a cylinder body 111, a piston 112 and a first piston rod 113 connected with the piston 112, in the embodiment, an upper pipeline 114 and a lower pipeline 115 which are communicated with the cylinder body 111 are respectively arranged on the upper end surface and the lower end surface of the piston 112, the upper pipeline 114 and the lower pipeline 115 both penetrate through the first piston rod 113 and are connected with a hydraulic power system 220 below, and the piston 112 is driven to move by the hydraulic power system 220;

An actuator disc 120 connected to one end of the first piston rod 113 far from the piston 112, the actuator disc 120 having an inner end surface, an outer end surface and a first cylindrical portion 121 extending axially from the inner end surface, in this embodiment, the first piston rod 113 is fixedly connected to the outer end surface of the actuator disc 120, and the first piston rod 113 is driven to drive the actuator disc 120 to move by the movement of the piston 112 in the cylinder 111;

the pressure bearing head 130 is connected to the cylinder body 111, the pressure bearing head 130 is provided with an inner end surface, an outer end surface and a second cylinder part 131 axially extending from the inner end surface, the inner circumferential surface of the second cylinder part 131 is sleeved on the outer circumferential surface of the first cylinder part 121, and in the embodiment, the inner end surface of the pressure bearing head 130 is connected with the cylinder body 111 in a threaded manner;

a movable cone 140 sleeved on the end of the outer circumferential surface of the second cylinder portion 131, a cutting nail 141 is disposed between the inner circumferential surface of the movable cone and the outer circumferential surface of the second cylinder portion 131, a plurality of inclined surfaces 142 are disposed on the outer circumferential surface of the movable cone 140, a slide rail 143 is disposed on the inclined surfaces 142, and in this embodiment, the cutting nail 141 is made of brass;

The locking slips 150 are wedge-shaped, sliding grooves 151 which are matched and connected with the sliding rails 143 are formed in the inner surfaces of the locking slips 150, locking threads 152 are formed in the outer surfaces of the locking slips 150, and the locking slips 150 are movably connected with the outer end face of the actuator disc 120; in this embodiment, a T-shaped groove 153 is disposed on an outer end surface of the locking slip 150, an i-shaped steel 154 is disposed in the T-shaped groove 153, and the locking slip 150 and the actuator disc 120 may be movably connected through the i-shaped steel 154, although the embodiment of the present invention may also be connected through other manners, which is not limited herein;

The sealing device 160 is sleeved on the outer peripheral surface of the second cylinder part 131 between the pressure bearing head 130 and the movable cone 140, and is extruded by the extrusion end surface of the movable cone 140 to be in a radial expansion state to realize plugging;

by arranging the plugging device 100, when the plugging device 100 enters a pipeline and reaches a designated position, the power hydraulic cylinder 110 is driven to act through the hydraulic power system 220, when the piston 112 moves towards the inner end face of the bearing head 130 in the cylinder body 111, the first piston rod 113 is driven to drive the actuator disc 120 and the bearing head 130 to generate relative displacement, in an initial state, the inner surface of the locking slip 150 is attached to the inclined surface 142 of the movable cone 140 and slides in cooperation with the slide rail 143 on the movable cone 140 through the slide groove 151 on the locking slip 150, when the actuator disc 120 drives the locking slip 150 to radially expand along the inclined surface 142 on the movable cone, a small axial force is generated, the outer wall of the locking slip 150 is engaged with the inner wall of the pipeline, so that the plugging device 100 stays at the designated position, the locking thread 152 is arranged on the outer surface of the locking slip 150, and the locking slip 150 can penetrate into the inner, the thrust of the pressure in the pipeline to the plugging device 100 is balanced, so that the plugging device 100 is fixed in the pipeline and cannot move, the reliable locking is realized, the locking slips 150 penetrate into the inner wall of the pipeline to scratch the inner wall of the pipeline, but not exceeding the requirements of industry standards, when the positioning of the occluding device 100 at a certain position of the pipeline is completed, as the actuator disc 120 drives the locking slips 150 radially open along the angled surface 142 on the active vertebral body, and generates a large axial force, at which time the locking slips 150 are anchored to the inner wall of the pipe, the movable cone 140 is increasingly subjected to the opposing force imparted by the locking slips 150, thereby shearing the shear pin 141 between the pressure head 130 and the movable cone 140, the sealing device 160 expands radially under the extrusion of the pressure head 130 and the movable cone 140, the medium in the sealed pipeline flows, and at the moment, the locking slip 150 is self-locked under the action of front and back pressure difference.

The power device 200 comprises a shell 210, a first end cover 211 and a second end cover 212 are respectively arranged at two ends of the shell 210, the outer end face of the first end cover 211 is connected with the outer end face of the actuator disc 120 through a second universal coupling 300, a hydraulic power system 220 and a signal transceiver 230 are arranged at one side inside the shell 210, the signal transceiver 230 is used for receiving control signals outside a pipeline so as to control the hydraulic power system 220 to work, a release mechanism 240 is arranged at the other side inside the shell 210, the release mechanism 240 penetrates through the second end cover 212 and is connected with the first universal coupling 3, and the hydraulic power system 220 is respectively connected with a power hydraulic cylinder 110 and the release mechanism 240. Under the structure, when the plugging device 100 runs to a certain position in a pipeline, a communication device outside the pipeline sends an extremely-low-frequency electromagnetic pulse signal, and after receiving a control signal, the signal transceiver 230 in the power device 200 inside the pipeline respectively controls the hydraulic power system 220 to work, specifically, after receiving the control signal, the hydraulic power system 220 can drive the power hydraulic cylinder 110 to move, so that the inner wall of the pipeline of the plugging device 100 is positioned or sealed, and can also drive the release mechanism 240 to separate the second plugging mechanism 2 from the first plugging mechanism 1, so that the second plugging mechanism 2 continues to move to a specified position downstream of the pipeline.

Referring to fig. 9, in a preferred embodiment, the outer end face of the bearing head 130, the outer end face of the actuator disc 120, the outer end face of the first end cap 211 of the housing 210, and the outer end face of the second end cap 212 of the housing 210 are all provided with a supporting walking device 400, the supporting walking device 400 includes an annular supporting seat 410, a plurality of supporting frames 420 are arranged at equal intervals on the outer circumference of the annular supporting seat 410, a sliding groove 430 is arranged on the supporting frame 420, a limiting block 440 is arranged in the sliding groove 430 in a sliding manner, a first spring 450 is arranged between the limiting block 440 and the supporting frame 420, and a supporting wheel 460 is arranged on the limiting block 440. In this embodiment, through supporting wheel 460, can make first shutoff mechanism 1 and second shutoff mechanism 2 even running when moving in the pipeline, because of being provided with first spring 450 between stopper 440 and support frame 420, when supporting wheel 460 is passing through complicated pipeline, through the buffer power of first spring 450 to supporting wheel 460 for supporting wheel 460 can have certain obstacle-crossing ability, thereby guarantees that first shutoff mechanism 1 and second shutoff mechanism 2 pass through smoothly in the pipeline.

Further, a leather cup 500 is arranged on the outer end face of the pressure bearing head 130 on the second plugging mechanism 2, and the outer diameter of the leather cup 500 is larger than the inner diameter of the pipeline. When the leather cup 500 at the front end of the second plugging mechanism 2 runs in the pipeline, the leather cup 500 is pushed to move forwards by the medium in the pipeline, so that the leather cup 500 generates a front-back pressure difference, and the first plugging mechanism 1 and the second plugging mechanism 2 are pushed to move forwards in the pipeline by the medium in the pipeline. Because the outer diameter of the plugging device 100 is smaller than the inner diameter of the pipeline and the supporting wheel 460 mechanism has certain diameter-changing capability, the first plugging mechanism 1 and the second plugging mechanism 2 have certain trafficability in the pipeline. In the present embodiment, the cup 500 is made of polyurethane.

Referring to fig. 7, in the preferred embodiment, the first universal coupling 3 comprises a connecting rod 31, two ends of the connecting rod 31 are respectively hinged with a hinge rod 32, and the end of the hinge rod 32 is provided with a snap ring 33. Through such structure setting, can make the connection between first shutoff mechanism 1 and the second shutoff mechanism 2 be flexonics, conveniently through the pipeline of completion, through set up snap ring 33 at articulated mast 32 tip, conveniently connect first shutoff mechanism 1 and second shutoff mechanism 2, also be convenient for separate.

referring to fig. 8, in the preferred embodiment, the second universal joint 300 includes two forks 310, the forks 310 are hinged by a ball 320, and the axle centers of the forks 310 and the ball 320 are provided with through holes 330. Through opening the through-hole 330 in the middle of the second universal coupling, make things convenient for the oil pipe on the hydraulic power system 220 to pass through-hole 330 in the second universal coupling to be connected with last pipeline 114 and lower pipeline 115 on first piston rod 113, thereby realize hydraulic power system 220 to the drive of power hydraulic cylinder 110.

In this embodiment, the release mechanism 240 includes a release hydraulic cylinder 241, a second piston rod 242 is disposed in the release hydraulic cylinder 241, an inner sleeve 242 is connected to the movable end of the release hydraulic cylinder 241, the inner sleeve 242 is in threaded connection with the second end cap 212, a plurality of slots 243 are disposed on an outer circumference of the inner sleeve 247, a protrusion 244 is engaged with the slots 243, an outer sleeve 245 is disposed on an outer circumference of the inner sleeve 247, a second spring 246 is disposed between the outer sleeve 245 and the protrusion 244, and the protrusion 244 extends toward the inner circumference of the outer sleeve 245 under a pre-tightening force of the second spring 246 and is engaged with a snap ring 33 at an end of the hinge rod 32 inserted into the inner sleeve 247. Through the structural arrangement, the second piston rod 242 in the hydraulic cylinder 241 is driven to extend by the hydraulic power system 220, the end of the second piston rod 242 extrudes the lug 244, and retracts into the clamping groove 243 under the compression of the second spring 246, so that the lug 244 is separated from the clamping ring 33 at the end of the hinge rod 32, and the first blocking mechanism 1 is separated from the second blocking mechanism 2.

In this embodiment, the hydraulic power system 220 includes a control module 221, a battery pack 222, and a hydraulic circuit 223, an input end of the control module 221 is connected to the signal transceiver 230, an output end of the control module 221 is connected to the hydraulic circuit 223, and the battery pack 222 supplies power to the signal transceiver 230, the control module 221, and the hydraulic circuit 223, respectively.

The working ring of the intelligent pipeline plugging device is a closed metal pipeline which is usually buried in soil or rivers with the depth of several meters, and due to the shielding effect of the soil, the river water and the metal pipeline on electromagnetic signals, the electromagnetic wave signals with common frequencies cannot penetrate through the pipeline for communication. The 3-30Hz frequency (ELF) signal is not as good as the daily communication frequency in the information transmission capacity, but has the capacity of penetrating through media such as soil layers, metal pipe walls with certain thickness and the like, so that the ELF signal is widely applied to submarine communication, earthquake prediction, pipeline robot communication and positioning, and can meet the requirements of internal and external communication of the intelligent pipeline plugging device.

Because the extremely low frequency electromagnetic signal emission frequency is low, an antenna which is as long as thousands of meters cannot be erected according to the traditional antenna emission theory, but the antenna is wound into a coil form to transmit signals by utilizing electromagnetic induction. In the working process of the intelligent pipeline plugging device, a ground control center outside the pipeline transmits a control instruction to an outside-pipeline communication control unit, the outside-pipeline communication control unit modulates an ELF electromagnetic signal according to the control instruction, then transmits the ELF electromagnetic signal into the pipeline through a transmitting coil through a power amplification circuit, an inside-pipeline signal transceiver 230 receives the modulated ELF electromagnetic signal, then performs operations such as amplification, filtering and the like on the ELF electromagnetic signal, demodulates the received ELF electromagnetic signal, identifies the control instruction, transmits the control instruction to a control module 221, and controls a hydraulic system to work according to the corresponding instruction through the control module 221 to complete a specified action. Meanwhile, the working state of the intelligent pipeline plugging device also needs to be transmitted back to the external communication unit through the process, so that the internal and external two-way communication of the pipeline is realized. The ultra-low frequency signal transceiver is a prior art and will not be described herein.

Further, the hydraulic circuit 223 includes an oil tank 2231, a hydraulic pump 2232, a two-position one-way solenoid valve 2233 and a three-position four-way solenoid directional valve 2234, one end of the hydraulic pump 2232 is connected to the oil tank 2231, the other end is connected to the two-position one-way solenoid valve 2233 and the three-position four-way solenoid directional valve 2234, a working oil port of the three-position four-way solenoid directional valve 2234 is connected to the power hydraulic cylinder 110, and a working oil port of the two-position one-way solenoid valve 2233 is connected to the release hydraulic cylinder. When the hydraulic power system 220 is required to drive the first piston rod 113 in the power hydraulic cylinder 110 to operate, the hydraulic pump 2232 pumps oil from the oil tank 2231 and injects the oil into the three-position four-way electromagnetic directional valve 2234, and the three-position four-way electromagnetic directional valve 2234 is communicated with the lower pipeline 115 of the first piston rod 113, hydraulic oil pushes the piston 112 to move towards the pressure-bearing head 130, so that the piston 112 drives the first piston rod 113 and drives the actuator disc 120 and the pressure-bearing head 130 to displace relative to each other, thereby realizing anchoring or sealing of the plugging device 100 in the pipeline, when unsealing is required, the three-position four-way electromagnetic directional valve 2234 is communicated with the upper pipeline 114 of the first piston rod 113, and the hydraulic oil pushes the piston 112 to move towards the actuator disc 120, so that the piston 112 drives the first piston rod 113 and drives the actuator disc 120 and the pressure-bearing head 130 to separate, thereby realizing; when the second blocking mechanism 2 needs to be separated from the first blocking mechanism 1, the two-position one-way solenoid valve 2233 is communicated with the release hydraulic cylinder 241 through an oil pipe, the second piston rod 242 is driven by hydraulic oil to push the bump 244, so that the snap ring 33 on the first universal coupling 3 is separated from the bump 244, and the second blocking mechanism 2 is separated from the first blocking mechanism 1.

Preferably, the sealing device 160 includes a first sealant cylinder 161 and a second sealant cylinder 162, and the first sealant cylinder 161 and the second sealant cylinder 162 are sleeved on the outer circumferential surface of the second cylinder portion 131 between the pressure-bearing head 130 and the movable cone 140, and a blocking ring 163 is disposed between the first sealant cylinder 161 and the second sealant cylinder 162. Through setting up a plurality of packing element, can increase the leakproofness to the pipeline is inside.

Preferably, the first packing rubber tube 161 and the second packing rubber tube 162 are made of nitrile rubber, and the movable cone 140 and the locking slip 150 are made of hard alloy steel. In this embodiment, the locking slips 150 are made of 40CrNiMo, and the movable cone 140 is made of 40 CrMo.

referring to fig. 11, the plugging method of the intelligent pipeline plugging device of the present invention will now be specifically described with reference to the above embodiments, including the following steps:

S1, installing an off-pipeline communication device: an outside-pipe communication device is arranged at a proper position in front of and behind the pipe section to be isolated, so that the intelligent plugging device in the pipe can smoothly receive various command actions.

S2, serving by the upstream pipeline station: the first pipeline intelligent plugging device and the second pipeline intelligent plugging device are connected through a universal joint, a ball is sent into a pipeline through a ball sending end of a pipe cleaner, and the first pipeline intelligent plugging device and the second pipeline intelligent plugging device move towards a downstream end under the pushing of a pipeline medium.

S3, anchoring the upstream pipeline intelligent plugging device: when the specified position 1 (namely the upstream position) is reached, the first signal transmitting device gives an anchoring command to the first pipeline intelligent plugging device through an extremely low frequency electromagnetic pulse signal (ELF). The hydraulic power system of the first intelligent pipeline plugging device starts to work, the first intelligent pipeline plugging device is anchored at the upstream of a pipe section to be isolated under the first-stage working pressure, and meanwhile, the second intelligent pipeline plugging device is released and continues to move along the pipeline under the pipeline pressure.

s4, anchoring the downstream pipeline intelligent plugging device: when the second pipeline intelligent plugging device reaches the designated position 2, the second signal transmitting device gives an anchoring instruction to the second pipeline intelligent plugging device through an extremely-low-frequency electromagnetic pulse signal (ELF), and similarly, the second pipeline intelligent plugging device is anchored at the downstream of the pipe section to be isolated.

S5, sealing the intelligent pipeline plugging device: after the first intelligent pipeline plugging device and the second intelligent pipeline plugging device are respectively anchored at the designated positions, sealing instructions can be issued through the communication devices outside the pipelines respectively. First pipeline intelligence plugging device passes through electromagnetic overflow valve adjustment power hydraulic system pressure, at first seals the isolated upstream end medium of action, seals second pipeline intelligence plugging device afterwards, and isolated downstream end medium can be maintained work such as salvageing to isolated pipeline section this moment.

S6, deblocking: after the pipeline is replaced and maintained, the pipeline external communication device sends an unsealing instruction to start the motor again, and the hydraulic cylinder reversely acts through the reversing of the electromagnetic reversing valve.

And S7, completing the unsealing action, collecting the ball and dismantling the communication device outside the pipeline, wherein the first intelligent pipeline plugging device and the second intelligent pipeline plugging device flow into a downstream pipeline station to a ball collecting end of a pipeline cleaner to collect the ball under the pushing of the medium in the pipeline.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.