CN114017577B - Pipeline replacement system and method - Google Patents
Pipeline replacement system and method Download PDFInfo
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- CN114017577B CN114017577B CN202111265260.8A CN202111265260A CN114017577B CN 114017577 B CN114017577 B CN 114017577B CN 202111265260 A CN202111265260 A CN 202111265260A CN 114017577 B CN114017577 B CN 114017577B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/1608—Devices for covering leaks in pipes or hoses, e.g. hose-menders by replacement of the damaged part of the pipe
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Abstract
The invention provides a drain pipe replacement system and a drain pipe replacement method, wherein the drain pipe replacement system comprises a drill rod, a circular cutting drill bit assembly and a jacking device, wherein the drill rod penetrating through an old pipe moves towards the old pipe by pulling the circular cutting drill bit assembly, the rotating circular cutting drill bit assembly breaks the old pipe while moving, the jacking device moving along with the circular cutting drill bit assembly drives the new pipe to occupy the position before the old pipe moves by pushing the new pipe to move towards the circular cutting drill bit assembly, the breaking of the old pipe and the replacement of the new pipe are simultaneously carried out, meanwhile, the moving circular cutting drill bit assembly generates a pulling force on the new pipe, the stable and efficient movement of the new pipe in the replacement process is ensured, in addition, the circular cutting drill bit assembly in the moving process brings broken fragments of the old pipe out of the replacement position of the new pipe, the old pipe fragments are prevented from influencing the replacement of the new pipe, the smooth replacement of the new pipe is ensured, and the defect that the collapsed and damaged old pipe cannot be efficiently repaired in the prior art is avoided.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a pipeline replacement system and a pipeline replacement method.
Background
In recent decades, as a large number of plastic pipes are applied in drainage industry, plastic pipes such as U-PVC (polyvinyl chloride) pipes, PE (polyethylene) pipes and HDPE (high density polyethylene) pipes have the advantages of acid and alkali resistance, corrosion resistance, convenient installation and transportation and low comprehensive cost, but the plastic pipes have structural defects such as easy deformation and breakage, once the pipes deform and collapse, collapse parts, especially small and medium plastic drainage pipes, are required to be treated at great cost, and the existing short pipe replacement method and pipe cracking method all adopt a hard extrusion and strong pulling mode by adopting a static pressure pipe cracking technology, so that the broken original pipe cannot be thoroughly cut and cleaned out, the drill bit is easy to be blocked, and the control of the elevation of the pipe is inaccurate.
Therefore, the replacement effect of the old pipe is poor in the prior art by means of the construction defect extrusion strong pulling, and the replacement technology capable of realizing the simultaneous breaking of the old pipe and the replacement of the new pipe is lacking in the prior art, so that the defect that the collapsed and damaged old pipe cannot be efficiently repaired exists.
Disclosure of Invention
The invention provides a pipeline replacement system and a pipeline replacement method, which are used for solving the problem that the collapsed and damaged old pipe cannot be efficiently repaired in the prior art.
The first aspect of the invention provides a pipe replacement system, which comprises a drill pipe, a ring cutting bit assembly and a jacking device, wherein the outer diameter of the drill pipe is smaller than that of an old pipe, the drill pipe penetrates through one end of the old pipe, one end of the ring cutting bit assembly is connected to one end of the drill pipe penetrating through the old pipe, the other end of the ring cutting bit assembly is detachably connected with one part of a new pipe, the end part of the ring cutting bit assembly, which is used for being connected with the new pipe, can be relatively rotated with the other part of the new pipe, the end part of the jacking device, which is used for being connected with the new pipe, can be relatively rotated with the new pipe, the outer diameter of the ring cutting bit assembly is larger than or equal to that of the old pipe, the drill pipe is enabled to break the old pipe by pulling the ring cutting bit assembly to move towards the other end of the old pipe, and the jacking device is enabled to occupy a position before the old pipe is moved by pushing the new pipe towards the ring cutting bit assembly.
According to an embodiment of the first aspect of the present invention, the drill rod is connected to a horizontal directional drilling machine, and the horizontal directional drilling machine drives the circular cutting bit assembly to move towards the other end of the old pipe by driving the drill rod to move.
The drill rod may be a drill rod connected to a drill rod of the horizontal directional drilling machine, or may be a drill rod of the horizontal directional drilling machine.
Utilize the unilateral whip mode of horizontal directional drilling machine, penetrate the geological formation with the drilling rod from above the earth's surface, and then in order to penetrate old pipe through first observation well, be convenient for carry out accurate control to the trend of drilling rod through horizontal directional drilling machine driven mode, it is little to occupy the construction site, horizontal directional drilling machine can put in ground in a flexible way, the whip only borrows the way not reaming, damage negligible to the stratum, external power, avoided need reaming or excavate the working face below ground with the defect that the drive arrangement that is used for driving the drilling rod leads to destroys the geological formation, extension engineering time and increase construction operation cost.
According to an embodiment of the first aspect of the present invention, the horizontal directional drilling machine is configured to crush old pipes by driving the drill pipe to rotate the circular cutting bit assembly.
Through the rotary motion of the drill rod, the annular cutting bit assembly is enabled to rotate, and compared with a mode that an additional rotary driving piece is arranged on the annular cutting bit assembly, the overall weight of the annular cutting bit assembly is reduced, and energy consumption is reduced.
According to an embodiment of the first aspect of the present invention, the circular cutting bit assembly includes a crushing bit and a cutting bit, the drill rod is connected to one end of the crushing bit, the other end of the crushing bit is used for connecting a new pipe, the cutting bit is connected to the drill rod and located at a side of the crushing bit away from the jacking device, the cutting bit rotates with the drill rod to primarily cut an old pipe, and the crushing bit rotates with the drill rod to crush the old pipe after the primary cutting is completed.
Through cutting head carries out vertical cutting to old pipe, carries out preliminary destruction to old pipe's integrality, and the rethread after accomplishing preliminary cutting broken drill bit carries out the breakage to old pipe, compare directly through broken drill bit carries out broken mode, and the crushing effect of this mode is more thorough, has reduced broken drill bit is at the impaired probability of broken in-process.
According to an embodiment of the first aspect of the present invention, an inclined surface is provided at one end of the crushing drill for connecting with the drill rod, the inclined surface is an annular structure surrounding the circumference of the drill rod, the plurality of cutting bits are provided, the plurality of cutting bits are distributed in a circumferential array with the axis of the annular inclined surface as the center, one end of the cutting bit is connected with the drill rod, and the other end of the cutting bit is connected with the inclined surface.
Through setting up a plurality of use the axle center of annular inclined plane as the cutting tool bit of central circumference array distribution, the cutting action to old pipe is more even and more efficient.
According to an embodiment of the first aspect of the present invention, the circular cutting bit assembly further includes a bit driving member, one end of the breaking bit for connecting the drill rod is provided with an inclined surface, one end of the cutting bit is hinged to the drill rod through a hinge member, the other end of the cutting bit extends to the inclined surface, and the inclined surface is provided with a receiving groove for receiving the cutting bit;
the cutter head driving piece drives the cutter head to rotate along the direction that the hinge piece is an axis and is far away from the crushing drill bit so that the cutter head stretches out to the outside of the storage groove to finish preliminary cutting of the old pipe, and drives the cutter head to rotate along the direction that the hinge piece is an axis and is close to the crushing drill bit so that the cutter head after finishing preliminary cutting of the old pipe contracts to the inside of the storage groove.
When the cutter head is not needed, the cutter head is hidden in a mode of being contained in the containing groove so as to protect the cutter head.
According to an embodiment of the first aspect of the present invention, the device further comprises a display and a visual camera, the visual camera is electrically connected with the display through a repeater, the visual camera is arranged on the jacking device, the visual camera is used for observing the crushing condition of the circular cutting bit assembly and/or the replacement process of a new pipe in real time, and the position of the jacking device, which is used for connecting the visual camera, and the circular cutting bit assembly can rotate relatively.
Specifically, wireless transmission is realized between the visual camera and the repeater through a wireless communication connection mode, and the repeater is fixed in the first observation well or the second observation well through a carbon fiber rod.
The repeater is used for transmitting the image data acquired by the visual camera to the display in real time, so that the problems that the existing replacement technology cannot realize visual operation and the like are solved.
According to an embodiment of the first aspect of the present invention, the radar antenna is configured to detect an upper geological layer portion of the pipeline located in the geological layer rich in groundwater to obtain whether there is collapse or not, and the sonar probe is configured to detect an upper geological layer portion of the pipeline located in the anhydrous geological layer to obtain whether there is collapse or not;
the radar antenna and the sonar probe are both arranged in the jacking device, and the position of the jacking device, which is used for connecting the radar antenna and the sonar probe, and the circular cutting drill bit assembly can rotate relatively.
The data acquired by the radar antenna and the sonar probe are transmitted to the display in real time through the repeater, so that the problems that the surrounding soil condition cannot be found in time in the existing replacement technology are solved.
According to an embodiment of the first aspect of the present invention, the drill pipe further comprises a centralizer, wherein the centralizer is sleeved on the drill pipe, and the circumferential side of the centralizer abuts against the inner surface of the old pipe.
In a possible embodiment, the jacking device is connected to the crushing drill bit by a connecting rod, which may penetrate the middle hole of the new pipe.
The centralizer plays a limiting guide role in the movement of the drill rod along the axis of the old pipe.
A second aspect of the present invention provides a pipe displacement method using the pipe displacement system provided in the first aspect, comprising:
penetrating the drill rod into the old pipe from a first observation well communicated with one end of the old pipe, and penetrating the drill rod out to a second observation well communicated with the other end of the old pipe;
placing the circular cutting drill bit assembly into a second observation well penetrating through the drill rod, connecting one end of the circular cutting drill bit assembly to the end part of the drill rod penetrating through the second observation well, connecting one end of a new pipe to the other end of the circular cutting drill bit assembly, and connecting the other end of the new pipe to the jacking device;
by pulling the drill rod, the drill rod is moved towards one end of the old pipe, which is communicated with the first observation well, by pulling the annular cutting drill bit assembly so that the annular cutting drill bit assembly breaks the old pipe, and the jacking device moves towards the annular cutting drill bit assembly by pushing the new pipe so as to drive the new pipe to occupy the position before the old pipe moves.
The pipeline replacement system and the method provided by the invention have the beneficial effects that:
the drill rod penetrating through the old pipe moves towards the old pipe by pulling the annular cutting drill bit assembly, the annular cutting drill bit assembly rotates to crush the old pipe while moving, the jacking device moving along with the annular cutting drill bit assembly moves towards the annular cutting drill bit assembly to drive the new pipe to occupy the position before the old pipe moves by pushing the new pipe, crushing of the old pipe and replacement of the new pipe are simultaneously carried out, meanwhile, the moving annular cutting drill bit assembly generates pulling force on the new pipe, and the front end and the rear end of the new pipe in the moving direction are respectively and simultaneously subjected to pulling force and pushing force in the same direction, so that stable and efficient movement of the new pipe in the replacement process is ensured.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a pipe displacement system according to an embodiment of the present invention;
FIG. 2 is a second schematic diagram of a pipeline replacement system according to an embodiment of the present invention;
FIG. 3 is a schematic view of the construction of a ring cutting bit assembly of a tubing replacement system according to an embodiment of the present invention;
FIG. 4 is a schematic view in section A-A of FIG. 3;
reference numerals illustrate:
1. a drill rod; 11. a horizontal directional drilling machine; 2. a circular cutting bit assembly; 21. crushing a drill bit; 211. an inclined surface; 212. a storage groove; 22. a cutter head; 3. a jacking device; 41. a visual camera; 42. a display; 421. a data line; 43. a repeater; 431. a carbon fiber rod; 51. a radar antenna; 52. a sonar probe; 6. a centralizer; 7. a new pipe; 8. old pipe; 91. a first observation well; 92. and a second observation well.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which would be apparent to one of ordinary skill in the art without making any inventive effort are intended to be within the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.
In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, reference to the terms "one embodiment," "first aspect embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The tubing replacement system and method provided by the present invention is described below in connection with fig. 1-4.
As shown in fig. 1-2, the embodiment of the present invention provides a pipe replacement system, which includes a drill rod 1, a ring cutting bit assembly 2 and a jacking device 3, wherein the outer diameter of the drill rod 1 is smaller than that of an old pipe 8, the drill rod 1 passes through one end of the old pipe 8, one end of the ring cutting bit assembly 2 is connected to one end of the drill rod 1 passing through the old pipe 8, the other end of the ring cutting bit assembly 2 is detachably connected with one part of a new pipe 7, the end of the ring cutting bit assembly 2 used for connecting the new pipe 7 can be relatively rotated with the other part of the new pipe 7, the end of the jacking device 3 used for connecting the new pipe 7 can be relatively rotated with the new pipe 7, the outer diameter of the ring cutting bit assembly 2 is larger than or equal to that of the old pipe 8, the drill rod 1 is moved towards the other end of the old pipe 8 by pulling the ring cutting bit assembly 2 so that the ring cutting bit assembly 2 breaks the old pipe 8, and the jacking device 3 is moved towards the new pipe 7 so as to drive the new pipe 7 to occupy the position before the old pipe 8 is moved.
The pipe replacement system provided in this embodiment may perform the following pipe replacement method, including:
penetrating the drill rod 1 into the old pipe 8 from a first observation well 91 communicated with one end of the old pipe 8, and penetrating the drill rod 1 out to a second observation well 92 communicated with the other end of the old pipe 8;
placing the circular cutting bit assembly 2 into a second observation well 92 penetrating through the drill rod 1, connecting one end of the circular cutting bit assembly 2 to the end part of the drill rod 1 penetrating through the second observation well 92, connecting one end of the new pipe 7 to the other end of the circular cutting bit assembly 2, and connecting the other end of the new pipe 7 to the jacking device 3;
by pulling the drill rod 1, the drill rod 1 is moved towards one end of the old pipe 8, which communicates with the first observation well 91, by pulling the ring-cutting bit assembly 2 so that the ring-cutting bit assembly 2 breaks the old pipe 8, and the jacking device 3 moves towards the ring-cutting bit assembly 2 by pushing the new pipe 7 so as to drive the new pipe 7 to occupy the position before the old pipe 8 moves.
The drill rod 1 penetrating through the old pipe 8 enables the annular cutting bit assembly 2 to move towards the old pipe 8 by pulling the annular cutting bit assembly 2, the rotating annular cutting bit assembly 2 breaks the old pipe 8 while moving, the jacking device 3 following the movement of the annular cutting bit assembly 2 moves towards the annular cutting bit assembly 2 to drive the new pipe 7 to occupy the position before the movement of the old pipe 8 by pushing the new pipe 7, the breaking of the old pipe 8 and the replacement of the new pipe 7 are simultaneously carried out, meanwhile, the moving annular cutting bit assembly 2 generates pulling force on the new pipe 7, and the front end and the rear end of the new pipe 7 in the moving direction are respectively and simultaneously subjected to pulling force and pushing force in the same direction, so that stable and efficient movement of the new pipe 7 in the replacement process is ensured.
According to one embodiment of the invention, the circular cutting drill assembly further comprises a horizontal directional drilling machine 11, the drill rod 1 is connected to the horizontal directional drilling machine 11, and the horizontal directional drilling machine 11 drives the circular cutting drill assembly 2 to move towards the other end of the old pipe 8 by driving the drill rod 1 to move.
The drill rod 1 may be the drill rod 1 connected to the drill rod 1 of the horizontal directional drilling machine 11, or may be the drill rod 1 of the horizontal directional drilling machine 11.
The drill rod 1 is penetrated into a geological layer from the ground surface by utilizing a unilateral deflecting mode of the horizontal directional drilling machine 11, then the drill rod 1 is penetrated into the old pipe 8 through the first observation well 91, the trend of the drill rod 1 is conveniently and accurately controlled by a driving mode of the horizontal directional drilling machine 11, the occupied construction area is small, the horizontal directional drilling machine 11 can be flexibly placed on the ground, the deflecting is only used for not reaming, the damage to the ground is negligible, the power is external, and the defects of damaging the geological layer, prolonging the construction time and increasing the construction operation cost caused by reaming or excavating a working surface below the ground to place driving equipment for driving the drill rod 1 are avoided.
According to one embodiment of the invention, the horizontal directional drilling machine 11 drives the drill rod 1 to rotate so as to drive the circular cutting bit assembly 2 to rotate and further crush the old pipe 8.
By the rotational movement of the drill rod 1 to rotate the ring cutting bit assembly 2, the overall weight of the ring cutting bit assembly 2 is reduced and the energy consumption is reduced compared to a manner in which an additional rotational drive is provided on the ring cutting bit assembly 2.
According to one embodiment of the present invention, the circular cutting bit assembly 2 includes a crushing bit 21 and a cutting bit 22, the drill rod 1 is connected to one end of the crushing bit 21, the other end of the crushing bit 21 is used to connect the new pipe 7, the cutting bit is connected to the drill rod 1 and located at a side of the crushing bit 21 away from the jacking device 3, the cutting bit 22 primarily cuts the old pipe 8 by rotating with the drill rod 1, and the crushing bit 21 primarily cuts the old pipe 8 after the primarily cut by rotating with the drill rod 1.
The old pipe 8 is longitudinally cut through the cutting tool bit 22, the integrity of the old pipe 8 is preliminarily damaged, the old pipe 8 is crushed through the crushing drill bit 21 after preliminary cutting is finished, and compared with a mode of crushing through the crushing drill bit 21 directly, the crushing effect of the mode is more thorough, and the damage probability of the crushing drill bit 21 in the crushing process is reduced.
As shown in fig. 3 to 4, according to an embodiment of the present invention, the circular cutting bit assembly 2 further includes a bit driving member (not shown), one end of the crushing bit 21 for connecting the drill rod 1 is provided with an inclined surface 211, one end of the cutting bit 22 is hinged to the drill rod 1 by a hinge, the other end of the cutting bit 22 extends to the inclined surface 211, and the inclined surface 211 is provided with a receiving groove 212 for receiving the cutting bit 22;
the cutter head driving member drives the cutter head 22 to rotate along the hinge member as an axis in a direction away from the crushing drill bit 21 so that the cutter head 22 extends out of the accommodating groove 212 to finish preliminary cutting of the old pipe 8, and drives the cutter head 22 to rotate along the hinge member as an axis in a direction close to the crushing drill bit 21 so that the cutter head 22 after finishing preliminary cutting of the old pipe 8 is retracted into the accommodating groove 212.
When the cutter head 22 is not required to be used, the cutter head 22 is hidden so that the cutter head 22 is accommodated in the accommodating groove 212, thereby protecting the cutter head 22.
It should be noted that the cutting bit 22 may be telescopically coupled to the drill rod 1 by means other than the hinge member being hinged to the drill rod 1, so as to enable the cutting bit 22 to extend or retract into the receiving slot 212.
As shown in fig. 4, the inclined surface 211 has an annular structure surrounding the circumference of the drill rod 1, a plurality of cutting tips 22 are provided, the plurality of cutting tips 22 are distributed in a circumferential array with the axial center of the annular inclined surface 211 as the center, and one end of the cutting tip 22 is connected to the drill rod 1 and the other end is connected to the inclined surface 211.
By providing a plurality of cutter heads 22 circumferentially arranged around the axial center of the annular inclined surface 211, the cutting action on the old pipe 8 is more uniform and more efficient.
According to an embodiment of the present invention, the device further includes a display 42 and a visual camera 41, the visual camera 41 is electrically connected with the display 42 through a repeater 43, the visual camera 41 is disposed on the jacking device 3, the visual camera 41 is used for observing the crushing condition of the annular cutting bit assembly 2 and/or the replacement process of the new pipe 7 in real time, the position of the jacking device 3 for connecting the visual camera 41 and the annular cutting bit assembly 2 can rotate relatively, that is, when the annular cutting bit assembly 2 rotates, the visual camera 41 can keep stationary on the rotating surface.
Specifically, the video camera 41 is wirelessly connected to the repeater 43 by wireless communication, and the repeater 43 is fixed to the first observation well 91 or the second observation well 92 by the carbon fiber rod 431.
The image data acquired by the visual camera 41 is sent to the display 42 in real time through the repeater 43, so that the problem that the conventional replacement technology cannot perform visual operation is solved.
According to one embodiment of the present invention, the radar antenna 51 detects the upper geological layer portion of the pipeline located in the geological layer rich in groundwater to obtain whether collapse or not, and the sonar probe 52 detects the upper geological layer portion of the pipeline located in the anhydrous geological layer to obtain whether collapse or not;
the radar antenna 51 and the sonar probe 52 are both arranged on the jacking device 3, and the position of the jacking device 3 for connecting the radar antenna 51 and the sonar probe 52 and the circular cutting bit assembly 2 can rotate relatively, namely, when the circular cutting bit assembly 2 rotates, the radar antenna 51 and the sonar probe 52 can keep static on the rotating surface.
The data acquired by the radar antenna 51 and the sound probe 52 are transmitted to the display 42 in real time through the repeater 43, so that the problems that the surrounding soil condition cannot be found in time in the prior art are solved.
According to one embodiment of the invention, the drill rod 1 is sleeved with the centralizer 6, and the circumference side of the centralizer 6 is abutted with the inner surface of the old pipe 8.
In a possible embodiment, the jacking device 3 is connected to the crushing drill bit 21 by means of a connecting rod, which may penetrate the middle hole of the new pipe 7.
The centralizer 6 plays a limiting and guiding role on the movement of the drill rod 1 along the axis of the old pipe 8.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A pipe replacement system, comprising:
the outer diameter of the drill rod is smaller than that of the old pipe, and the drill rod penetrates through one end of the old pipe;
the annular cutting drill bit assembly is characterized in that one end of the annular cutting drill bit assembly is connected with one end of the drill rod penetrating through the old pipe, the other end of the annular cutting drill bit assembly is detachably connected with one part of the new pipe, and the end part of the annular cutting drill bit assembly, which is used for connecting the new pipe, and the new pipe can rotate relatively;
the end part of the jacking device is detachably connected with the other part of the new pipe, and the end part of the jacking device, which is used for connecting the new pipe, and the new pipe can relatively rotate;
the outer diameter of the circular cutting drill bit assembly is larger than or equal to the outer diameter of the old pipe;
the drill rod moves towards the other end of the old pipe by pulling the circular cutting drill bit assembly so that the circular cutting drill bit assembly breaks the old pipe, and the jacking device drives the new pipe to occupy the position before the old pipe moves by pushing the new pipe to move towards the circular cutting drill bit assembly;
the circular cutting bit assembly includes:
the drill rod is connected to one end of the crushing drill bit, and the other end of the crushing drill bit is used for connecting a new pipe;
the cutting tool bit is connected with the drill rod and is positioned at one side of the crushing drill bit far away from the jacking device;
the cutting tool bit is rotated along with the drill rod to perform preliminary cutting on the old pipe, and the crushing drill bit is rotated along with the drill rod to crush the old pipe after the preliminary cutting is completed.
2. The pipe replacement system of claim 1, further comprising:
the drill rod is connected to the horizontal directional drilling machine, and the horizontal directional drilling machine drives the drill rod to move so as to drive the circular cutting drill bit assembly to move towards the other end of the old pipe.
3. The pipe displacement system of claim 2, wherein the horizontal directional drilling machine breaks old pipe by driving the drill pipe in rotation to rotate the ring cutting bit assembly.
4. The pipe displacement system according to claim 1, wherein one end of the crushing drill bit for connecting the drill pipe is provided with an inclined surface, the inclined surface is an annular structure surrounding the circumference of the drill pipe, the plurality of cutting heads are arranged in a circumferential array with the axis of the annular inclined surface as the center, one end of the cutting head is connected to the drill pipe, and the other end is connected to the inclined surface.
5. The pipe displacement system of claim 1, wherein the ring cutting bit assembly further comprises a bit driving member, one end of the breaking bit for connecting the drill pipe is provided with an inclined surface, one end of the cutting bit is hinged to the drill pipe through a hinge member, the other end of the cutting bit extends to the inclined surface, and the inclined surface is provided with a receiving groove for receiving the cutting bit;
the cutter head driving piece drives the cutter head to rotate along the direction that the hinge piece is an axis and is far away from the crushing drill bit so that the cutter head stretches out to the outside of the storage groove to finish preliminary cutting of the old pipe, and drives the cutter head to rotate along the direction that the hinge piece is an axis and is close to the crushing drill bit so that the cutter head after finishing preliminary cutting of the old pipe contracts to the inside of the storage groove.
6. The pipe replacement system of claim 1, further comprising:
a display;
the visual camera is electrically connected with the display through the repeater, the visual camera is arranged in the jacking device, the visual camera is used for observing the crushing condition of the circular cutting drill bit assembly and/or the replacement process of a new pipe in real time, and the position of the jacking device, which is used for connecting the visual camera, and the circular cutting drill bit assembly can rotate relatively.
7. The pipe replacement system of claim 6, further comprising:
the radar antenna is used for detecting the geological layer part above the pipeline of the geological layer rich in underground water to acquire whether collapse exists above the pipeline;
the sonar probe is used for detecting the geological layer part above the pipeline positioned on the anhydrous geological layer to acquire whether collapse exists above the pipeline;
the radar antenna and the sonar probe are both arranged in the jacking device, and the position of the jacking device, which is used for connecting the radar antenna and the sonar probe, and the circular cutting drill bit assembly can rotate relatively.
8. The pipe replacement system of any one of claims 1-7, further comprising:
and the centralizer is sleeved on the drill rod, and the circumferential side of the centralizer is abutted with the inner surface of the old pipe.
9. A pipe replacement method using the pipe replacement system according to any one of claims 1 to 8, comprising:
penetrating the drill rod into the old pipe from a first observation well communicated with one end of the old pipe, and penetrating the drill rod out to a second observation well communicated with the other end of the old pipe;
placing the circular cutting drill bit assembly into a second observation well penetrating through the drill rod, connecting one end of the circular cutting drill bit assembly to the end part of the drill rod penetrating through the second observation well, connecting one end of a new pipe to the other end of the circular cutting drill bit assembly, and connecting the other end of the new pipe to the jacking device;
by pulling the drill rod, the drill rod is moved towards one end of the old pipe, which is communicated with the first observation well, by pulling the annular cutting drill bit assembly so that the annular cutting drill bit assembly breaks the old pipe, and the jacking device moves towards the annular cutting drill bit assembly by pushing the new pipe so as to drive the new pipe to occupy the position before the old pipe moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265260.8A CN114017577B (en) | 2021-10-28 | 2021-10-28 | Pipeline replacement system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265260.8A CN114017577B (en) | 2021-10-28 | 2021-10-28 | Pipeline replacement system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114017577A CN114017577A (en) | 2022-02-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002004768A (en) * | 2000-06-21 | 2002-01-09 | Nkk Corp | Device and method of replacing existing pipe |
| CN102003140B (en) * | 2010-10-20 | 2012-10-17 | 中国地质大学（武汉） | Traversing reverse circulating drilling method of horizontal directional drilling pipeline and special drilling bit |
| CN203757176U (en) * | 2013-12-06 | 2014-08-06 | 杭州威尔蒙市政工程有限公司 | Non-excavation-type pipeline replacement device |
| CN208804392U (en) * | 2018-09-04 | 2019-04-30 | 李世秋 | A kind of novel system split tube method and repair underground piping |
| CN209325271U (en) * | 2018-11-06 | 2019-08-30 | 武汉特瑞升电子科技有限公司 | A kind of pipeline radar detection device |
| CN212284321U (en) * | 2019-12-06 | 2021-01-05 | 佛山市三鑫市政工程有限公司 | Old pipeline excision cutter |
| CN212093582U (en) * | 2019-12-25 | 2020-12-08 | 中国二冶集团有限公司 | Drill bit for breaking pipeline |
| CN214500230U (en) * | 2020-12-28 | 2021-10-26 | 云南兴塑环保科技有限公司 | Trenchless construction pipeline replacing device |
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