CN214516525U - Pipeline dredging device and system - Google Patents

Abstract

The utility model discloses a pipeline dredging device and a system, wherein the pipeline dredging device comprises a shell and a flexible sleeve; the shell is provided with a medium interface communicated with the inner cavity of the shell and a dredging interface used for being connected with a pipeline to be dredged; the flexible sleeve is arranged in the shell, the peripheral edge of the first end of the flexible sleeve is in circumferential sealing connection with the dredging interface, and the pipe orifice of the second end of the flexible sleeve is closed and connected with the body of the shell; the flexible sleeve has a predetermined length and is configured to: when the medium entering the inner cavity of the shell from the medium interface acts on the flexible sleeve, the body of the flexible sleeve can stretch out to a pipeline to be dredged from the dredging interface in a nesting manner. By applying the scheme, the pipeline blockage preventing device has better operability on the basis of solving the problem of pipeline blockage.

Description

Pipeline dredging device and system

Technical Field

The utility model relates to a pipeline mediation technical field, concretely relates to pipeline pull throughs and system.

Background

With the development of modern technology and the proliferation of energy and material requirements, process industry systems are becoming more and more complex. Taking the fields of petroleum, chemical engineering and nuclear power as an example, industrial pipelines for conveying fluid, powder and solid have the characteristics of gradually increasing caliber, gradually increasing pressure and gradually increasing conveying distance, and accidents caused by pipeline blockage or production and operation stoppage happen in engineering practice.

Particularly, the ball conveying pipeline of the fuel loading and unloading system of the high-temperature gas cooled reactor nuclear power station works in a high-altitude environment, is mainly used for transferring and conveying incompletely burnt fuel balls in a pneumatic conveying mode, and has the characteristics of tortuous route and difficult access of personnel. During service, the pipeline may generate micro deformation due to welding process, thermal deformation, irradiation aging and other reasons, if the fuel ball is broken, the phenomena of bridging and blocking of the fuel ball and broken fragments may occur in the deformed pipeline, and if the pipeline is not dredged in time, the working efficiency of the reactor may be affected.

In view of this, it is urgently needed to provide an innovative scheme for the dredging technology of the solid material conveying pipeline so as to effectively solve the problem of pipeline blockage.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a pipeline dredging device and system has better maneuverability on the basis of solving the stifled problem of pipeline card.

The utility model provides a pipeline dredging device, which comprises a shell and a flexible sleeve; the shell is provided with a medium interface communicated with the inner cavity of the shell and a dredging interface used for being connected with a pipeline to be dredged; the flexible sleeve is arranged in the shell, the peripheral edge of the first end of the flexible sleeve is in circumferential sealing connection with the dredging interface, and the pipe orifice of the second end of the flexible sleeve is closed and connected with the body of the shell; the flexible sleeve has a predetermined length and is configured to: when the medium entering the inner cavity of the shell from the medium interface acts on the flexible sleeve, the body of the flexible sleeve can stretch out to a pipeline to be dredged from the dredging interface in a nesting manner.

Preferably, the sleeve winding device further comprises a sleeve winding shaft arranged in the shell, and two side shaft ends of the sleeve winding shaft are pivoted to the body of the shell; the second end of the flexible sleeve is used as a base point fixed with the sleeve winding shaft and is wound on the sleeve winding shaft.

Preferably, the device also comprises a fixing piece, a sleeve fixing ring piece and a fastener; the fixing piece is provided with an adapting interface which is adapted to the dredging interface; the outer ring body of the sleeve fixing ring piece is arranged between the dredging interface and the adapting interface; the body of the flexible sleeve extends out through a through hole in the middle of the sleeve fixing ring piece, and the periphery of the first end of the flexible sleeve is arranged between the sleeve fixing ring piece and the fixing piece; the fastener is used for axially fixing the adapting interface and the dredging interface so as to clamp and seal the first end of the flexible sleeve.

Preferably, the dredging device further comprises a gasket which is arranged between the sleeve fixing ring piece and the dredging interface.

Preferably, the pull through interface and the adapter interface are flanges.

Preferably, the pressure sensor is used for collecting the pressure of the medium in the inner cavity of the shell.

Preferably, the flexible sleeve is made of a carbon fiber film.

The utility model also provides a pipeline dredging system, which comprises the pipeline dredging device, the medium conveying device, the driving device and the clutch device; wherein the media delivery device is in communication with the media interface of the housing for inputting media that may act on the flexible sleeve; the power output end of the driving device is in transmission connection with the sleeve winding shaft so as to provide driving force for winding the flexible sleeve on the sleeve winding shaft; the clutch device is arranged between the power output end of the driving device and the sleeve winding shaft.

Preferably, the method further comprises the following steps: and the three-way connecting piece is used for arranging the pipeline to be dredged in through the first pipe orifice and the second pipe orifice, the third pipe orifice is communicated with the dredging interface of the shell, and the third pipe orifice extends and forms along the direction which is obtuse to the pipe section to be dredged of the pipeline to be dredged.

Preferably, the method further comprises the following steps: and the stop valve is arranged on a communication pipeline between the third pipe orifice and the dredging interface.

Preferably, the method further comprises the following steps: a control unit for outputting control commands to the control ends of the medium conveying device, the drive device, the shut-off valve and/or the clutch device.

Preferably, the medium delivery device is an air compressor.

Preferably, the pipeline dredging device is provided in a plurality of numbers, and the number of the pipeline dredging devices is respectively corresponding to the plurality of pipe sections to be communicated of the pipeline to be dredged.

Compared with the prior pipeline dredging technology, the utility model provides an innovative realization mode using a flexible part as a dredging execution part, a shell as a basic structure is used for being connected with a pipeline to be dredged, and a flexible sleeve arranged in the shell can extend into the pipeline to be dredged under the action of medium pressure; specifically, the first end periphery of the flexible sleeve is in sealing connection with the dredging interface along the peripheral direction, the second end of the flexible sleeve is connected with the body of the shell, and the pipe orifice is closed; based on the physical characteristics of the flexible sleeve body, when a medium enters the inner cavity of the shell and acts on the flexible sleeve, the flexible sleeve body with the preset length can stretch out of the dredging interface in a nesting mode to a pipeline to be dredged. According to the arrangement, when the front end of the flexible sleeve entering the pipeline touches a blocking object in the pipeline, axial thrust acting on the blocking object is formed under the action of medium pressure in the sleeve, so that the blocking object is damaged to bridge, the blocking object is pushed to move forwards in the pipeline, and the influence of blocking on the normal operation efficiency of the system caused by the blockage of the pipeline can be avoided. Meanwhile, the preset length of the flexible sleeve can be determined according to the pipeline to be dredged, the requirements of different use environments are met, and the flexible sleeve has good operability.

In a preferred aspect of the present invention, the flexible sleeve is wound on a sleeve winding shaft pivotally attached to the housing to better control the flexible sleeve telescoping out and the sleeve arrangement within the housing. Further, utilize drive arrangement to provide the winding drive power of flexible sleeve pipe, accomplish the mediation operation back, drive sleeve pipe winding axle by drive arrangement and rotate, the flexible sleeve pipe body that stretches into the pipeline is withdrawed gradually, and the book is tightened to waiting for next use on the sleeve pipe winding axle, can further improve device maneuverability.

In another preferred scheme of the utility model, the first end of the flexible sleeve extends out through the middle through hole of the sleeve fixing ring piece, and the periphery of the first end is arranged between the sleeve fixing ring piece and the fixing piece; therefore, on the basis that reliable connection of the dredging interface of the shell is achieved by the fastening piece, the sealing connection of the first end of the flexible sleeve is achieved, the flexible sleeve is convenient to detach and replace, and the structure is simple and reliable.

In the utility model discloses a still another preferred scheme, the flexible sleeve pipe that adopts carbon fiber film to make to be applied to high temperature gas cooled and pile fuel handling system ball conveying pipeline, thereby avoid the damage that daily radiation probably produced, have better life.

The utility model discloses an among the preferred scheme of system, be provided with the stop valve between the casing mediation interface of device and tee junction spare, also promptly, can dynamically switch the intercommunication relation through the stop valve between mediation device and the pipeline. According to the arrangement, on one hand, when the system pipeline is in a normal working state, the stop valve is switched to a closed state, materials conveyed in the pipeline are physically separated from the dredging device, and the influence on the dredging device based on material properties can be avoided; when the system pipeline is blocked, the dredging operation can be executed by opening the stop valve. In addition, based on the setting of stop valve, when the pipeline dredging device need overhaul the maintenance, with the stop valve switch to the closed condition can to make system maneuverability can wholly promote.

Drawings

FIG. 1 is a front view of an embodiment of the pipe pull through;

FIG. 2 is a top plan view of the pipe pull through of FIG. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic view of an embodiment of the flexible cannula stack after deployment;

FIG. 5 is an enlarged view of the portion B of FIG. 3;

FIG. 6 is a cross-sectional view C-C of FIG. 3;

FIG. 7 is a schematic diagram of a pipe clearing system according to an embodiment;

fig. 8 is a schematic diagram of the pipe dredging system according to the second embodiment.

In the figure:

the pipeline dredging device 10, the medium conveying device 20, the pipeline to be dredged 30, the control unit 40, the driving device 50, the clutch device 60, the three-way connecting piece 70, the first pipe orifice 71, the second pipe orifice 72, the third pipe orifice 73, the three-way connecting piece 70 ', the first pipe orifice 71', the second pipe orifice 72 ', the third pipe orifice 73' and the stop valve 80;

the device comprises a shell 1, a medium interface 11, a dredging interface 12, a sealing cover 13, a blind cover 14, a flexible sleeve 2, a first end 21, a second end 22, a sleeve winding shaft 3, a fixing piece 4, an adapting interface 41, a sleeve fixing ring piece 5, a middle through hole 51, a fastening piece 6, a gasket 7 and a pressure sensor 8.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Without loss of generality, the embodiment takes the pipeline dredging device shown in the figures as a basic description main body, and the specific implementation mode of taking the flexible piece as the dredging execution part is explained in detail. It should be understood that the dimensional proportionality of the relevant infrastructure components is not the core inventive point of the present application and does not constitute a substantial limitation on the pipe clearing solution claimed herein.

Referring to fig. 1 and 2, fig. 1 is a front view of a pipe pull through according to the present embodiment, and fig. 2 is a plan view of the pipe pull through shown in fig. 1.

The pipeline dredging device 10 comprises a shell 1, wherein the shell 1 is used as a base and is provided with a medium interface 11 communicated with an inner cavity of the shell so as to be communicated with a medium conveying device (20) to establish a pressure medium conveying channel; meanwhile, the dredging joint 12 of the housing 1 is used for connecting with the pipeline 30 to be dredged, so that the flexible sleeve 2 inside the housing 1 extends into the pipeline 30 to perform dredging operation.

The flexible sleeve 2 is arranged in the housing 1, and specifically, the periphery of a first end 21 of the flexible sleeve 2 is circumferentially sealed and connected with the dredging connector 12, a second end 22 of the flexible sleeve is connected with the body of the housing 1, and a nozzle of the second end 22 is closed, so as to prevent pressure medium from entering the center of the flexible sleeve 2 from the nozzle of the second end 22. Referring to fig. 3 and 4 together, fig. 3 is a sectional view taken along a-a of fig. 2, which shows a non-dredging state, and fig. 4 is a schematic view showing a use state of the flexible sleeve stack according to the present embodiment after being extended.

In this scheme, this flexible sleeve 2 has the predetermined length that satisfies the mediation stroke requirement, and after the medium got into 1 inner chamber of casing from medium interface 11, based on the physical characteristics of flexible sleeve 2 body, when medium pressure acted on flexible sleeve 2, flexible sleeve 2's body can be from mediation interface 12 and stretch out to treating in the mediation pipeline 30 of overlapping the form. In the process, because the first end 21 of the flexible sleeve 2 is always fixed, and the front end of the body extending out of the pipeline 30 to be dredged in a nesting shape is dynamically changed, when the body touches a blocking object in the pipeline, axial thrust acting on the blocking object is formed under the action of medium pressure in the sleeve, so that bridging of the blocking object is damaged, and the blocking object is pushed to move forwards in the pipeline. Compared with the traditional steel wire flexible shaft conveying mode, the scheme has the characteristics of clear action position and high thrust, and can easily break the bridge and push away the blocked sundries in the pipeline.

Under different application scenes, when the device material is selected to have special environment applicable requirements, the material of the flexible sleeve 2 can be selected according to specific conditions. For example, but not limiting of, when applied to the ball transportation pipe dredging of a high temperature gas cooled reactor fuel handling system, the flexible sleeve 2 is made of a carbon fiber film; when applied to other occasions, the film can be made of other film materials according to the temperature, pressure, corrosion resistance requirements and the like of application scenes. It should be understood that the above-mentioned flexible film material is not the core invention of the present application, and those skilled in the art can implement the flexible film material based on the prior art, so that the detailed description thereof is omitted.

Here, the predetermined length of the flexible sleeve 2 may be determined according to the actual treated section of the pipe to be dredged. In order to arrange the casing inner sleeves in order, a sleeve winding shaft 3 may be provided in the casing 1, the flexible sleeve 2 is wound around the sleeve winding shaft 3 with its second end as a base point fixed to the sleeve winding shaft 3, and both ends of the sleeve winding shaft 3 are pivoted to the body of the casing 1. In a non-working state, the flexible sleeve 2 can be wound on the sleeve winding shaft 3 pivoted on the shell 1, the inner sleeves of the shell are orderly arranged, the space occupation in the shell is reduced, and a good medium channel in the shell is formed, so that the smooth and reliable extending process of the flexible sleeve 3 in a nesting manner is ensured; when the dredging operation is carried out, the sleeve winding shaft 3 is driven to rotate relative to the shell 1 in an adaptive manner under the driving of the flexible sleeve 3 body which extends outwards gradually.

Specifically, when the winding shaft of the flexible pipe 2 is driven by air pressure to rotate in the forward direction, the front end of the flexible pipe 2 is extended into the pipe to be dredged, and the maximum extension is about 1/2 of the total length of the pipe. When the front end of the flexible sleeve 2 touches a blockage object in the pipeline, axial pressure is applied to the blockage object under the action of air pressure in the other side of the flexible sleeve 2, the blockage object is damaged and a bridge is formed, and the blockage object is pushed to advance in the pipeline. Wherein the pressure F is determined as follows:

f ═ P pi (Do/2) ^2, where:

f-the force acting on the blocking object along the axis direction of the pipeline, unit N;

p-the air inlet pressure of the dredging device, unit MPa;

do-flexible dredging sleeve inner diameter (approximately equal to the inner diameter of the pipeline to be dredged), unit mm;

when the inner diameter of the pipeline to be dredged is fixed, the size of the F can be realized by adjusting the air inlet pressure P of the dredging device. In order to avoid the stress concentration phenomenon at the front end of the flexible sleeve 2 during the dredging operation, the maximum dredging device air inlet pressure P is not more than 1/4 which is the limit of the tensile strength of the material used by the flexible sleeve 2.

Of course, the arrangement of the flexible sleeve 2 in the housing 1 is not limited to the winding shown. It will be appreciated that the use of a wrap-around arrangement of the flexible sleeve within the housing has significant advantages for longer predetermined lengths of flexible sleeve 2.

For example, but not limited to, the dredging joint 12 of the pipe dredging device 10 may be a flange as shown in the drawings, and accordingly, the flange is assembled with a flange on the side of the pipe to be dredged, so that the pipe dredging device has the characteristics of high connection reliability and convenient operation.

Here, the flange on the side of the pipeline to be dredged may be a flange directly disposed on the pipeline to be dredged, or may be a flange provided on a three-way connection member on the pipeline to be dredged. It should be understood that it is within the scope of the claims so long as the functional requirements of the reliable connection described above are met.

The above description shows that the sealing connection of the first end 21 of the flexible sleeve 2 with the dredging interface 12 has two main functions: firstly, the first end 21 of the flexible sleeve 2 is relatively fixed to ensure that the body of the flexible sleeve is sleeved and extended under the action of pressure medium; secondly, no medium leaks between the second end 22 of the flexible sleeve 2 and the dredging joint 12, and the formed medium pressure is completely acted on the sleeve body. In order to achieve a more secure and reliable sealing connection of the first end 21 of the flexible sleeve 2, the clamping force provided by the flange can be fully utilized.

Please refer to fig. 3, fig. 4 and fig. 5 together, wherein fig. 5 is an enlarged view of a portion B of fig. 3. The fixture 4 is shown with an adapter 41 adapted to the pull through 12, i.e. the fixture 4 is assembled with the housing 1 in the form of a flange interface.

As shown in fig. 5, a sleeve fixing ring 5 is arranged between the two, specifically, the outer ring body of the sleeve fixing ring 5 is arranged between the housing 1 and the flange of the fixing member 4, and has a middle through hole 51; as shown in fig. 5, the body of the flexible sleeve 2 extends out through the middle through hole 51 of the sleeve fixing ring piece 5, and the periphery of the first end 21 is disposed between the sleeve fixing ring piece 5 and the fixing piece 5; the adapter port 41 and the deoccluding port 12 are axially secured with fasteners 6 to clamp the first end 21 of the flexible sleeve 2. So set up, assembly process is simple relatively, utilizes fastener 6 to realize on the basis that casing mediation interface 12 reliably connects, reaches the sealing connection of the first end 21 of flexible sleeve 2 simultaneously, convenient to detach and change.

It should be noted that when the pipe pull through 10 is used as a stand-alone device for a transition application, the fixing member 4 may be a transition piece connected to the pipe 30 to be pulled through. When the pipeline dredging device 10 is used as a special fixing device for the pipeline 30 to be dredged, the fixing member 4 may be a member directly disposed on the pipeline to be dredged, or may be a three-way connecting member disposed on the pipeline to be dredged, and has the function of assembling and connecting and sealing the first end of the flexible sleeve.

As further shown in fig. 5, a gasket 7 may be further disposed between the sleeve fixing ring 5 and the dredging joint 12 of the casing 1, so that the fastening member 6 can be more reliably attached and fixed when applying a clamping force.

In addition, the device may be further optimised in order to improve the controllability of the pipe clearing device. As shown in fig. 1 and 2, the device is provided with a pressure sensor 8 for collecting the medium pressure in the inner cavity of the shell 1, and in practical application, the pressure sensor 8 can feed back the collected medium pressure in the cavity to the control unit 40 to form closed-loop control which can ensure control accuracy.

Further, a driving device 50 may be used to provide the winding driving force for the flexible sleeve 2, and refer to fig. 6, which is a cross-sectional view of C-C of fig. 3. As shown, one side shaft end of the sleeve winding shaft 3 protrudes out of the side wall of the housing 1 for establishing a driving connection.

In this embodiment, the end of the sleeve winding shaft 3 that establishes the driving connection is arranged to be connected to the driving device 50 via the clutch device 60. Thus, when the dredging operation is performed, the clutch device 60 is switched to the disengaged transmission state, so that the sleeve winding shaft 3 can rotate freely, and the requirement of extending the flexible sleeve 2 in a sleeved mode is met. After the dredging operation is completed, the driving device 50 is started based on a control instruction, the clutch device 60 is switched to a joint transmission state, the driving device drives the sleeve winding shaft to rotate, the flexible sleeve body extending into the pipeline is gradually retracted, and the flexible sleeve body is tightly wound on the sleeve winding shaft to wait for next use.

The driving device 50 may be a motor or a motor provided with a speed reduction mechanism.

As shown in fig. 6, the pivot connection between the two side shaft ends of the sleeve winding shaft 3 is respectively constructed by bearings embedded in the side wall of the housing 1, so that the rotation resistance of the shaft system can be reduced. Wherein, one end of the driving connection is sealed by a sealing cover 13 with a through hole in the middle part, and forms the outer ring axial limit of the side bearing; the other end of which establishes a seal by means of a blind cap 14, likewise forming an outer ring axial stop for the respective side bearing. Of course, the design of the blind cover is not needed, and the shell 1 is used for forming a sealing and bearing limiting structure (not shown in the figure), so that the pivoting function of the sleeve winding shaft 3 and the function of isolating the atmosphere inside and outside the shell are also met.

In addition to the aforementioned pipe clearing, this embodiment also provides two pipe clearing system embodiments.

The first embodiment is as follows:

referring to fig. 7, a schematic diagram of the pipe dredge system of the present embodiment is shown.

The pipeline dredging system comprises the pipeline dredging device 10, a medium conveying device 20, a driving device 50 and a clutch device 60. The medium conveying device 20 is communicated with the medium interface 11 of the shell 1, and an air compressor which can selectively provide air as a working medium is used for inputting gas which can act on the flexible sleeve 2 to provide good gas driving working pressure; such as, but not limited to, a film press, to provide a cleaner gas or an isolated atmosphere.

Wherein, the power output end of the driving device 50 is in transmission connection with the sleeve winding shaft so as to provide the driving force for winding the flexible sleeve on the sleeve winding shaft; a clutch device 60 is provided therebetween to switch between the disengaged drive and engaged drive states as required.

As shown in fig. 7, a three-way connection 70 is further disposed on the pipe 30 to be dredged, the three-way connection 70 is disposed on the pipe 30 to be dredged through a first pipe orifice 71 and a second pipe orifice 72, and a third pipe orifice 73 is communicated with the dredging interface 12 of the housing 1.

To further improve system operability, a shut-off valve 80 and a control unit 40 may also be provided as shown.

Wherein the stop valve 80 is arranged on the communication pipeline between the third nozzle 73 of the three-way connection 70 and the dredging joint 12 of the pipeline dredging device 10. When the system pipeline is in a normal working state, the stop valve 80 is switched to a closed state, and materials conveyed in the pipeline are physically separated from the dredging device, so that the influence on the dredging device based on material properties can be avoided; when the system pipeline is blocked, the dredging operation can be executed by opening the stop valve 80. In addition, based on the setting of stop valve 80, when the pipeline dredging device needs to be overhauled and maintained, it is enough to switch stop valve 80 to the closed state.

Of course, in the case where the flange on the pipe to be dredged is directly disposed on the pipe to be dredged, the stop valve 80 is correspondingly disposed on the communication pipe between the pipe flange (not shown) and the dredging joint 12 of the pipe dredging device.

The control unit 40 is configured to output control commands to the medium feeding device 20, the drive device 50, the stop valve 80, and/or a control end of the clutch device 60. The control unit 40 may employ a PLC controller, based on the parameter information fed back by the signal acquisition components such as the pressure sensor 8 in real time, and the PLC controller outputs a control command to one or more of the execution components according to the control command corresponding to a preset control strategy.

For example, but not limited to, when the system works normally, the stop valve 80 is in a closed state, and in an accident condition, the PLC is triggered to open the stop valve 80, and then the dredging operation is performed on the basis. After the dredging operation is completed, the compressor interface discharges redundant gas under the control of the PLC, the clutch device 60 is switched to the joint state, the driving device 50 starts to work, the flexible sleeve 2 is gradually withdrawn, and when the sleeve winding shaft 3 is completely wound on the sleeve winding shaft 3, the stop valve 80 is controlled to be closed to wait for the next dredging task.

When this scheme of application dredges the operation, the remote operation can be realized to the overall process, can realize the automatic operation condition after the cooperation PLC logic, is applicable to the environment more and can not reach or have the industrial occasion of harm to the human body.

Example two:

compared with the first embodiment, the pipeline dredging system of the scheme is characterized in that: the third nozzle 73 'of the three-way connection 70' is formed to extend in a direction forming an obtuse angle with the pipe section to be communicated of the pipe 30 to be communicated. Referring to fig. 8, a schematic diagram of the pipe dredge system of the present embodiment is shown. For clarity of illustrating the differences and relationships between the two, the same components or structures are shown with the same reference numbers in the drawings.

In this embodiment, the first pipe orifice 71 ' and the second pipe orifice 72 ' of the three-way connection member 70 ' are disposed on the pipe 30 to be dredged, specifically on the upstream side of the pipe section to be dredged. As shown in the figure, the third pipe orifice 73 'extends along the direction which forms an obtuse angle with the pipe section to be communicated of the pipe 30 to be communicated, that is, the extending direction of the third pipe orifice 73' and the included angle θ of the pipe section to be communicated of the pipe 30 to be communicated are an obtuse angle, so that the arrangement can effectively reduce the working resistance of the front end overlapping sleeve of the flexible sleeve 2 body when the medium pressure acts on the flexible sleeve 2, and improve the working efficiency of removing the blocking object.

In addition, the pipe dredging device 10 shown in the figure is provided in two, which are respectively provided corresponding to two pipe sections to be communicated of the pipe 30 to be dredged. In the actual engineering design, if the pipeline to be dredged is long, a plurality of other pipeline dredging devices (not shown in the figure) can be arranged on the same pipeline.

In addition, for the pipeline which can enter fuel fragments from two or more directions (the pipeline which can generate bidirectional or multidirectional blockage), as shown in fig. 8, the pipeline dredging device 10 provided by the scheme can be respectively arranged at the two ends of the pipeline, so that bidirectional dredging operation as shown by arrows in the figure is realized, and quick blockage removal is ensured.

It should be noted that, in the above embodiments, the number of the pipe dredging devices 10 is one and two, and the pipe dredging devices can be specifically configured according to the length of the pipe and the forming direction of the blocking object. It should be understood that the specific implementation of the functional components of the system medium conveying device 20, the driving device 50, the clutch device 60, the control unit 40, and the like is not the core point of the present application, and those skilled in the art can implement the functions based on the prior art, and therefore, the detailed description thereof is omitted.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (13)

1. Pipeline pull throughs, its characterized in that includes:

the shell is provided with a medium interface communicated with the inner cavity of the shell and a dredging interface used for being connected with a pipeline to be dredged;

the flexible sleeve is arranged in the shell, the peripheral edge of the first end of the flexible sleeve is in circumferential sealing connection with the dredging interface, and the pipe orifice of the second end of the flexible sleeve is closed and connected with the body of the shell; the flexible sleeve has a predetermined length and is configured to: when the medium entering the inner cavity of the shell from the medium interface acts on the flexible sleeve, the body of the flexible sleeve can stretch out to a pipeline to be dredged from the dredging interface in a nesting manner.

2. The pipe pull of claim 1, further comprising:

the sleeve winding shaft is arranged in the shell, and two side shaft ends of the sleeve winding shaft are pivoted to the body of the shell; the second end of the flexible sleeve is used as a base point fixed with the sleeve winding shaft and is wound on the sleeve winding shaft.

3. The pipe pull of claim 2, further comprising:

the fixing piece is provided with an adaptive interface matched with the dredging interface;

the outer ring body of the sleeve fixing ring piece is arranged between the dredging interface and the adapting interface; the body of the flexible sleeve extends out through a through hole in the middle of the sleeve fixing ring piece, and the periphery of the first end of the flexible sleeve is arranged between the sleeve fixing ring piece and the fixing piece;

and the fastener is used for axially fixing the adapting interface and the dredging interface so as to clamp and seal the first end of the flexible sleeve.

4. The pipe pull of claim 3, further comprising:

and the gasket is arranged between the sleeve fixing ring piece and the dredging interface.

5. The pipe pull of claim 3 or claim 4, wherein the pull through and the adaptor interface are flanges.

6. The pipe pull of claim 5, further comprising:

and the pressure sensor is used for acquiring the pressure of the medium in the inner cavity of the shell.

7. The conduit pull of claim 2, wherein the flexible sleeve is formed from a carbon fiber membrane.

8. Pipeline dredging system, its characterized in that includes:

the pipe pull through of any one of claims 2 to 7;

a media delivery device in communication with the media port of the housing for inputting media operable on the flexible sleeve;

the power output end of the driving device is in transmission connection with the sleeve winding shaft so as to provide driving force for winding the flexible sleeve on the sleeve winding shaft;

and the clutch device is arranged between the power output end of the driving device and the sleeve winding shaft.

9. The pipe pull system of claim 8, further comprising:

and the three-way connecting piece is used for arranging the pipeline to be dredged in through the first pipe orifice and the second pipe orifice, the third pipe orifice is communicated with the dredging interface of the shell, and the third pipe orifice extends and forms along the direction which is obtuse to the pipe section to be dredged of the pipeline to be dredged.

10. The pipe pull system of claim 9, further comprising:

and the stop valve is arranged on a communication pipeline between the third pipe orifice and the dredging interface.

11. The pipe pull system of claim 10, further comprising:

a control unit for outputting control commands to the control ends of the medium conveying device, the drive device, the shut-off valve and/or the clutch device.

12. The pipe pull of claim 11, wherein the media delivery device is an air compressor.

13. The pipe pull system of claim 8, wherein the pipe pull is provided in a plurality of corresponding to a plurality of pipe sections of the pipe to be pulled.

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