CN113715322B - Lining equipment and method for lining core pipe damage-free in lining process - Google Patents
Lining equipment and method for lining core pipe damage-free in lining process Download PDFInfo
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- CN113715322B CN113715322B CN202110917612.7A CN202110917612A CN113715322B CN 113715322 B CN113715322 B CN 113715322B CN 202110917612 A CN202110917612 A CN 202110917612A CN 113715322 B CN113715322 B CN 113715322B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/26—Lining or sheathing of internal surfaces
- B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
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- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention discloses lining equipment and a method for enabling a lining core pipe to be free of damage in a lining process, wherein the lining equipment comprises an equipment rack, a multi-stage reducing module, a traction device, a fixing device, a guide wheel set and a protective cover, the central lines of a lining pipe, the multi-stage reducing module and a steel pipe are on the same straight line, two ends of the lining pipe are connected with a traction head and arranged at one end of the equipment rack, the steel pipe is fixed on the fixing device and arranged at the other end of the equipment rack, and traction force is provided by a winch to drive the lining pipe to complete lining steel pipe operation. Utilize the traction head, be connected with interior bushing pipe head and tail both ends in the whole journey of undergauge inside lining, provide lasting, stable axial stress to interior bushing pipe, guarantee that inside lining core pipe maintains the undergauge state after accomplishing the undergauge, prevent to take place to kick-back. At the moment, the outer diameter of the lining core pipe is smaller than the inner diameter of the steel pipe, the lining core pipe can be smoothly lined in the steel pipe, obvious friction cannot occur, and the outer surface of the lining core pipe can be effectively prevented from being abraded, so that the composite pipe is invalid.
Description
Technical Field
The invention belongs to the field of pipe processing, and relates to production equipment of a lining pipeline, in particular to lining equipment and a method for lining a lining core pipe in a lining process, which can effectively prevent the lining core pipe from being worn in the lining process in the process of lining a plastic pipeline such as a steel pipe.
Background
Although steel pipes are the most common conveying pipelines, corrosion damage frequently occurs when acid and alkali or corrosive fluids are conveyed, media are leaked, and even the steel pipes subjected to corrosion prevention treatment are still difficult to use for a long time. The plastic pipeline has the characteristics of acid resistance, alkali resistance and corrosion resistance, can just make up the defects of the steel pipe and is used as an acid, alkali or corrosive fluid conveying pipeline. Due to insufficient ring stiffness of the plastic pipe, the plastic pipe cannot bear high conveying pressure when used alone. Therefore, the plastic lining steel pipe is usually adopted as a product form, and is used as a conveying pipeline of a special medium.
The conventional plastic pipeline is lined with the steel pipe in a mode of reducing by using a reducing machine, and meanwhile, the plastic pipeline is directly lined with the steel pipe by being driven by a motor of the reducing machine. After the plastic pipeline is reduced, the plastic pipeline is not subjected to any external force, and can rebound quickly after leaving the roller of the reducing machine. At the moment, the steel pipe is forcibly lined into the steel pipe, and the core pipe and the inner wall of the steel pipe have strong friction, so that the outer wall of the core pipe is damaged. At this time, a gap is formed between the core tube and the steel pipe. When negative pressure is generated in the core pipe, air in the gap is easy to flatten the core pipe, so that the composite pipe is ineffective.
Disclosure of Invention
Aiming at the problems, the invention provides lining equipment and a method for lining a lining core pipe in a lining process, wherein a traction head is used for connecting the whole diameter-reduced lining with the head end and the tail end of the lining pipe, so that relatively stable axial stress is continuously provided. After the diameter shrinkage is finished, the lining core pipe is ensured to continuously receive relatively stable axial stress smaller than the yield stress of the lining core pipe, the diameter shrinkage state is maintained, and the rebound is prevented. At the moment, the outer diameter of the lining core pipe is slightly smaller than the inner diameter of the steel pipe, the lining core pipe can be smoothly lined in the steel pipe, obvious friction cannot occur, and the outer surface of the lining core pipe can be effectively prevented from being abraded, so that the composite pipe is invalid.
In order to achieve the purpose, the invention adopts the technical scheme that:
a lining device without damaging a lining core pipe in a lining process comprises a device rack, a multi-stage reducing module, a traction device, a fixing device, a guide wheel set and a protective cover, wherein the device rack is used for bearing a main body of the device; the multistage reducing module is arranged on the equipment rack and used for reducing the inner liner tube; the traction device main body consists of a winch, a traction head and a traction steel cable and is used for providing continuous traction force for the lining pipe and completing the operation of the lining steel pipe; the fixing device is arranged on the equipment rack and used for fixing the steel pipe; the guide wheel sets are respectively arranged at each position of the frame, guide the transmission of the traction steel cable, reduce the shake and keep the stability of the lining process, and comprise a movable guide wheel and a plurality of fixed guide wheels, wherein the movable guide wheel is arranged at the head of the frame and the outlet position of the steel pipe; the protective covers are arranged at the two ends of the inlet and the outlet of the steel pipe and play a role in protection; the central lines of the lining pipe, the multistage reducing modules and the steel pipe are on the same straight line.
Furthermore, the lining equipment with the lining process having no damage to the lining core pipe further comprises a wireless tension sensor, the wireless tension sensor is connected to the outer side of the traction head close to one side of the steel pipe, and the wireless tension sensor is externally connected with a display device to display the tension of the traction steel cable in the lining process in real time.
Further, the whole steel construction that is of equipment frame comprises the independent frame of a plurality of cuboid structures, connects through the buckle between each independent frame, and every independent frame bottom is equipped with the gyro wheel, makes things convenient for the frame to remove, the gyro wheel is equipped with locking device, is used for fixed frame after the selected position, prevents to slide.
Furthermore, multistage undergauge module comprises three independent undergauge module, and every undergauge module main part is the square steelframe, and the upper and lower left and right sides respectively is equipped with a undergauge gyro wheel, and the relative position is adjusted to undergauge gyro wheel accessible an adjusting screw, and then realizes the control to the undergauge volume, three independent undergauge module sets up in equipment frame middle part position side by side, according to interior bushing pipe size and undergauge volume requirement, progressively reduces step by step, realizes interior bushing pipe undergauge.
Furthermore, the draw gear main part comprises hoist engine, traction head and traction cable wire, traction cable wire winding is in the hoist engine take-up reel, and traction cable wire is after the take-up reel winding certain number of turns, and two ends traction cable wire are stretched out from controlling two directions respectively, and the cable wire utilizes special traction head after setting in the guide pulley group of different positions in the equipment frame, with inside lining core pipe about the traction head at both ends be connected. At this time, after the winch is operated, the steel cable at one end can be drawn into the take-up reel of the winch, and the steel cable at the other end can be led out of the take-up reel.
Further, pull the head including pull the ectosome, pull interior centrum and threaded connection head, pull the ectosome for hollow toper structure, inside have with pull interior cone matched with toper inside groove, the top center of pulling the ectosome has the screw thread through-hole, and the top center of pulling interior centrum has the thread groove, and threaded connection head passes the screw thread through-hole and is connected with the thread groove.
Furthermore, fixing device comprises limit clamp and a support piece, limit clamp sets up at the steel pipe both ends, realizes opening and shutting through the handle of rotating connecting thread. The support piece is integrally Y-shaped, is arranged between the two limiting clamps, and is adjusted in height through threads so as to support the steel pipe.
Furthermore, the movable guide wheel is fixed in the middle of a bearing and independently rotates without being influenced by the bearing, the two shoulder positions are respectively connected with two hydraulic rods, two ends of the bearing are respectively inserted into a limiting device shaped like a Chinese character 'hui', the inner end and the outer end of the limiting device are respectively provided with a limiting nut which penetrates through the bearing and is used for limiting the position of the bearing, when the hydraulic rods are pushed forwards and backwards, the bearing moves perpendicular to the limiting device, the relative position of the movable guide wheel is adjusted by adjusting the hydraulic rod, the tensioning condition of the traction steel cable is changed, and the axial stress of the liner tube is further controlled.
Furthermore, the protective covers are respectively arranged at the inlet and the outlet of the steel pipe, the main body is of a steel structure, and two sides of the protective covers are respectively provided with an observation window formed by acrylic plates for observing the lining condition.
The invention also provides a lining method for the lining core pipe damage-free lining process, which is carried out by adopting the lining equipment and comprises the following steps:
(1) selecting a steel pipe with proper length, placing the steel pipe on the supporting piece, and fixing the steel pipe through the clamps at the two ends;
(2) selecting a diameter reducing module with a proper diameter reducing amount, and installing the selected diameter reducing module on an equipment rack;
(3) fixedly connecting two ends of the lining pipe to the traction heads on two sides;
(4) traction steel cables at two ends of the winch respectively extend out from the left direction and the right direction, the traction steel cable at the left end is connected with the left traction head after being steered by a plurality of fixed guide wheels, and the traction steel cable at the right end is connected with the right traction head after being steered by a plurality of guide wheels and penetrating through a copper pipe and a multistage reducing module, so that the winch connects the left traction head and the right traction head through the traction steel cables to form traction force on the lining pipe;
(5) covering a protective cover, starting a winch, pulling a traction head to move forwards by a traction steel cable so as to drive the lining pipe to move, and reducing and deforming the lining pipe after passing through a reducing module to enter an inner cavity of the steel pipe;
(6) the hydraulic rod of the movable guide wheel part is adjusted according to the real-time display of the traction force borne by the lining pipe through a display device connected with a wireless tension sensor, so that the position of the movable guide wheel is adjusted, the tensioning condition of the whole traction steel cable is changed by adjusting the relative position of the movable guide wheel, the stress acting on the axial direction of the lining pipe is maintained within a safe range within the yield stress of the material, the diameter reduction state of the lining pipe is maintained, and the axial stress acting on the lining pipe is further controlled;
(7) when the two ends of the lining pipe are all pulled to the inside of the steel pipe, the winch stops running, the hydraulic rod is contracted, the steel rope is loosened, the stress acting on the axial direction of the lining pipe is released, the lining pipe is kept still for 8 hours, after the lining pipe naturally rebounds, the lining pipe is placed in a constant-temperature oven at 80 ℃, the secondary rebounding is promoted, the rebounding time is 8 hours, the lining pipe is fully rebounded, the self rebound resilience of the lining pipe is utilized, the lining pipe penetrating through the steel pipe is tightly adhered to the inner wall of the steel pipe, and then the preparation of the steel pipe of the lining plastic pipe is completed.
Advantageous effects
The invention discloses lining equipment and a method for lining a lining core pipe in a lining process without damage, which can realize that a plastic pipeline is quickly lined into a steel pipe, and simultaneously keep the axial stress of a lining pipe in the lining process, so as to avoid the phenomenon that the lining pipe is pressed flat and fails due to the friction and the surface abrasion with the inner wall of the steel pipe after the lining pipe is quickly rebounded.
(1) The mode that the lining pipe is connected in front and back is adopted, the axial stress of the lining pipe can be effectively controlled in the process, and the diameter shrinkage state of the lining pipe is maintained on the premise of not damaging the lining pipe.
(2) An adjustable guide wheel is arranged at the outlet of the steel pipe, the relative position of the guide wheel is adjusted through a hydraulic rod, the tensioning degree of the steel cable is further controlled, and the axial stress is finally controlled.
(3) The wireless tension sensor is externally connected with a display device, can display and monitor the tension in real time, and is convenient to control.
Drawings
FIG. 1 is a schematic view of the overall structure of the lining equipment of the present invention;
FIG. 2 is a schematic view of a multi-stage diameter-reducing module of the lining apparatus of the present invention;
FIG. 3 is a cross-sectional view of a pulling head of the lining equipment of the present invention;
FIG. 4 is a top view of section A of FIG. 1 illustrating the movable idler support structure of the present invention;
in the figure: 1. an equipment rack; 2. a multi-stage reducing module; 21. a square steel frame; 22. reducing the diameter of the roller; 23. adjusting a pitch screw; 3. a winch; 4. a traction head; 41. pulling the outer body; 42. drawing the inner cone; 43. a threaded connector; 44. a threaded through hole; 45. a thread groove; 5. a traction wire rope; 6. a liner tube; 7. a steel pipe; 8. a movable guide wheel; 9. a protective cover; 10. a clamp; 11. a support member; 12. a roller; 13. a bearing; 14. a limiting device; 15. a limit nut; 16. a hydraulic rod.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, a lining process is to lining core pipe harmless lining equipment, including equipment rack 1, multistage undergauge module 2, draw gear, fixing device, guide pulley group and protection casing 9, lining pipe 6, the central line of multistage undergauge module 2 and steel pipe 7 is on the collinear, lining pipe 6 both ends are connected the tractor 4 and are set up the one end in the equipment rack, multistage undergauge module 2 sets up the middle part position in the equipment rack, steel pipe 7 fixes the other end that sets up in the equipment rack on fixing device, it connects on the tractor to pass the steel pipe and undergauge module after drawing cable 5 leads through each guide pulley, provide traction force by hoist engine 3 and drive lining pipe and accomplish the operation of lining steel pipe.
Wherein, equipment rack 1 is the main part that is used for bearing the weight of equipment, wholly is the steel construction, comprises the independent frame of a plurality of cuboid structures, connects through the buckle between each independent frame, and every independent frame bottom is equipped with gyro wheel 12, makes things convenient for the frame to remove, gyro wheel 12 is equipped with locking device, is used for fixed frame after the selected position, prevents to slide.
As shown in fig. 2, the multistage reducing module 2 is arranged on the equipment rack 1 and used for reducing the diameter of the lining pipe 6, the multistage reducing module 2 is composed of three independent reducing modules, each reducing module main body is a square steel frame 21, the upper side, the lower side, the left side, the right side and the left side of each reducing module main body are respectively provided with a reducing roller 22, the relative positions of the reducing rollers 22 can be adjusted through a distance adjusting screw 23, and further the reducing amount is controlled, the three independent reducing modules are arranged in parallel at the middle position of the equipment rack 1, and gradually reduced according to the size of the lining pipe and the reducing amount requirement, so that the reducing of the lining pipe is realized.
The traction device main part comprises hoist engine 3, traction head 4 and traction cable 5 for right lining pipe 6 provides lasting traction force, accomplishes the operation of inside lining steel pipe 7, and traction cable twines in hoist engine 3 take-up reel, and its receipts line mode is not one end fixed, but traction cable twines certain number of turns at the take-up reel after, and two directions are stretched out from controlling respectively to both ends cable wire. At this time, after the winch is operated, the steel cable at one end can be drawn into the take-up reel of the winch, and the steel cable at the other end can be led out of the take-up reel. The steel cable passes through guide wheel sets arranged at different positions of the frame and is connected with the left end and the right end of the lining core pipe by using special traction heads. The outer side of the traction head at the head position is also connected with a wireless tension sensor which is externally connected with a display device and can display the tension of the steel cable section in the lining process in real time.
As shown in fig. 3, the traction head 4 includes a traction outer body 41, a traction inner cone 42 and a threaded connector 43, the traction outer body 41 is a hollow conical structure, the interior of the traction outer body has a conical inner groove matched with the traction inner cone 42, the top center of the traction outer body 41 has a threaded through hole 44, the top center of the traction inner cone 42 has a threaded groove 45, and the threaded connector 43 passes through the threaded through hole 44 and is connected with the threaded groove 45.
The fixing device is arranged on the equipment rack 1 and used for fixing the steel pipe 7; the fixing device is composed of two limiting clamps 10 and a supporting piece 11, in the embodiment, the two limiting clamps 10 are respectively arranged at two ends of the steel pipe 7 and are opened and closed by rotating handles connected with threads, and the clamps with locking and fixing functions in the prior art can be applied to the invention. The support member 11 is integrally Y-shaped, is arranged between the two limiting clamps 10, and is adjusted in height through threads to support the steel pipe.
Referring to fig. 1 and 4, the guide wheel sets are respectively arranged at each position of the frame, guide the transmission of the traction steel cable 5, reduce the shake, and keep the stability of the lining process, and comprise a movable guide wheel 8 and a plurality of fixed guide wheels, wherein the movable guide wheel 8 is arranged at the head of the frame and the outlet of the steel pipe 7; the movable guide wheel 8 is fixed at the middle position of a bearing 13 (the structure of the part is not shown in figure 1, and is shown in figure 4), the movable guide wheel independently rotates and is not influenced by the bearing, two ends of the bearing 13 are respectively inserted into a limiting device 14 shaped like a Chinese character 'hui', the limiting device 14 is arranged on a bearing steel frame, the inner end and the outer end of the bearing are respectively provided with a limiting nut 15 penetrating through the bearing, the bearing 13 is circular, the two ends of the bearing are provided with threads in a turning mode, when the movable guide wheel is connected, one limiting nut is firstly rotated into the bearing from one end, then the bearing is inserted into the limiting device shaped like a 'hui', and one limiting nut is screwed on the outer side. Therefore, the limit is carried out, and the bearing can only move forwards and backwards in the limit device.
The position of the two shoulders of the bearing 13 is respectively connected with the two hydraulic rods 16, the lower ends of the hydraulic rods are fixed at one end of a bearing steel frame, power is provided through a hydraulic device, the position of the movable guide wheel 8 is adjusted through adjusting the hydraulic rods, the relative position of the movable guide wheel 8 is adjusted, so that the tensioning condition of the traction steel cable is changed, and the axial stress acting on the lining pipe is further controlled. The stress is controlled to maintain the diameter reduction state of the lining pipe, and if the stress is removed at the moment, the lining pipe can rebound instantly and cannot be lined into the steel pipe; if the stress is too large and exceeds the yield stress of the material, the lining pipe is plastically deformed and cannot be restored to the original state. The hydraulic rod is arranged in the same direction as the movement direction of the steel cable, has the function of stretching, and has the effects of driving the bearing to move back and forth and adjusting the tension degree of the steel cable.
The protection casing 9 sets up at the exit both ends of steel pipe 7, plays the guard action, and the main part is the steel construction, and both sides are equipped with an observation window that constitutes by the ya keli board respectively for observe the inside lining condition.
The invention relates to a lining method for lining a core pipe without damage in a lining process, which is carried out by adopting the lining equipment and comprises the following steps:
(1) selecting a steel pipe 7 with a proper length, placing the steel pipe 7 on a support piece 11, and fixing the steel pipe through clamps 10 at two ends;
(2) selecting a diameter reducing module 2 with a proper diameter reducing amount, and installing the selected diameter reducing module 2 on an equipment rack 1;
(3) two ends of the lining pipe 6 are fixedly connected to the traction heads 4 on two sides, specifically, when the connection is carried out, a gap exists between the traction outer body 41 and the traction inner cone 42, the lining pipe 6 is inserted into the gap, the threaded connector 43 passes through the threaded through hole 44 to be connected to the threaded groove 45, the lining pipe 6 is tightly connected to the traction outer body 41 and the traction inner cone 42 through the traction force between threads, and then the lining pipe 6 and the traction heads 4 are fixed;
(4) traction steel cables 5 at two ends of the winch respectively extend out from the left direction and the right direction, the traction steel cable at the left end is connected with a left traction head after being steered by a plurality of fixed guide wheels, and the traction steel cable at the right end is connected with a right traction head after being steered by a plurality of rollers and penetrating through a copper pipe 7 and a multistage reducing module 2, so that the winch 3 connects the left traction head and the right traction head through the traction steel cables 5 to form traction force on an inner liner pipe 6;
(5) covering a protective cover, starting a winch 9, pulling a traction head to move forwards by a traction steel cable 5, further driving the lining pipe 6 to move, and reducing the diameter of the lining pipe 6 after passing through a reducing module to deform so as to gradually enter the inner cavity of the steel pipe;
(6) the hydraulic rod of the movable guide wheel part is adjusted according to the real-time display of the traction force applied to the lining pipe by a display device connected with a wireless tension sensor, so that the adjustment of the position of the guide wheel is realized, the tensioning condition of the whole traction steel cable is changed by adjusting the relative position of the movable guide wheel 8, and the axial stress acting on the lining pipe is further controlled;
(7) when the two ends of the lining pipe are all pulled to the inside of the steel pipe, the winch stops running, the hydraulic rod is contracted, the steel rope is loosened, the stress acting on the axial direction of the lining pipe is released, the lining pipe is kept still for 8 hours, after the lining pipe naturally rebounds, the lining pipe is placed in a constant-temperature oven at 80 ℃, the secondary rebounding is promoted, the rebounding time is 8 hours, the lining pipe is fully rebounded, the self rebound resilience of the lining pipe is utilized, the lining pipe penetrating through the steel pipe is tightly adhered to the inner wall of the steel pipe, and then the preparation of the steel pipe of the lining plastic pipe is completed.
The invention provides lining equipment and a method for lining a lining core pipe in a lining process, which utilize a traction head to be connected with the head end and the tail end of the lining pipe in the whole diameter-reducing lining process, and continuously provide more stable axial stress. After the diameter shrinkage is finished, the lining core pipe is ensured to continuously receive relatively stable axial stress smaller than the yield stress of the lining core pipe, the diameter shrinkage state is maintained, and the rebound is prevented. At the moment, the outer diameter of the lining core pipe is smaller than the inner diameter of the steel pipe, the lining core pipe can be smoothly lined in the steel pipe, obvious friction cannot occur, abrasion of the outer surface of the lining core pipe can be effectively prevented, and further the composite pipe is caused to lose efficacy.
Claims (9)
1. The utility model provides a lining process is to lining core lossless lining equipment of pipe, includes equipment rack (1), multistage undergauge module (2), draw gear, fixing device, guide pulley group and protection casing (9), its characterized in that:
the equipment rack (1) is used for bearing the main body of equipment;
the multistage reducing module (2) is arranged in the middle of the equipment rack (1) and used for reducing the inner liner tube (6);
the traction device main body consists of a winch (3), a traction head (4) and a traction steel cable (5) and is used for providing continuous and stable axial traction force for the lining pipe (6) to finish the operation of the lining steel pipe (7); the traction steel cable (5) is wound in a take-up reel of the winch (3), after the traction steel cable (5) is wound on the take-up reel for a certain number of turns, the traction steel cables (5) at two ends respectively extend out from the left direction and the right direction, and after passing through guide wheel sets arranged at different positions of the equipment rack, the traction steel cables are connected with traction heads at the left end and the right end of the lining core pipe by using special traction heads;
the fixing device is arranged on the equipment rack (1) and used for fixing the steel pipe (7);
the guide wheel sets are respectively arranged at different positions of the equipment rack, guide the transmission of the traction steel cable (5), reduce the shake and keep the stability of the lining process, and comprise a movable guide wheel (8) and a plurality of fixed guide wheels, wherein the movable guide wheel (8) is arranged at the outlet position of the steel pipe (7);
the protective covers (9) are arranged at the two ends of the inlet and the outlet of the steel pipe (7) and play a role in protection;
interior bushing pipe (6), the central line of multistage undergauge module (2) and steel pipe (7) is on same straight line, draw head (4) setting in the one end of equipment frame is connected at interior bushing pipe (6) both ends, multistage undergauge module (2) set up the middle part position in the equipment frame, steel pipe (7) are fixed and are set up the relative other end in the equipment frame on fixing device, draw cable wire (5) and connect hoist engine (3) and pass steel pipe (7) and multistage undergauge module (2) and connect on drawing the head after leading through each guide pulley, provide traction force by hoist engine (3) and drive interior bushing pipe completion inside lining steel pipe operation.
2. The lining equipment for lining process without damage to the lining core pipe according to claim 1, further comprising a wireless tension sensor connected to the outside of the traction head near one end of the steel pipe, wherein the wireless tension sensor is externally connected with a display device for displaying the axial tension of the traction steel cable in the lining process in real time.
3. The lining equipment for lining core pipe damage prevention in the lining process according to claim 1, wherein the whole equipment frame (1) is of a steel structure and is composed of a plurality of independent frames of a cuboid structure, the independent frames are connected through buckles, a roller (12) is arranged at the bottom of each independent frame, the movement of the frames is facilitated, and the roller (12) is provided with a locking device and used for fixing the frames after being positioned to prevent sliding.
4. The lining equipment for lining core pipe damage-free in the lining process according to claim 1, wherein the multistage reducing module (2) is composed of three independent reducing modules, each reducing module is a square steel frame (21), the upper side, the lower side, the left side and the right side of each reducing module are respectively provided with a reducing roller (22), the relative positions of the reducing rollers (22) are adjusted through a distance adjusting screw (23) to realize the control of the reducing amount, the three independent reducing modules are arranged in parallel at the middle position of the equipment rack (1), and the reducing amount of the lining pipe is gradually reduced according to the size of the lining pipe and the reducing amount requirement.
5. The lining equipment for lining core pipe damage free in lining process according to claim 1, wherein the drawing head (4) comprises a drawing outer body (41), a drawing inner cone (42) and a threaded connector (43), the drawing outer body (41) is a hollow conical structure, a conical inner groove matched with the drawing inner cone (42) is formed inside the drawing outer body, a threaded through hole (44) is formed in the top center of the drawing outer body (41), a threaded groove (45) is formed in the top center of the drawing inner cone (42), and the threaded connector (43) penetrates through the threaded through hole (44) to be connected with the threaded groove (45).
6. The lining equipment for lining process without damaging the lining core pipe according to claim 1, wherein the fixing device is composed of limiting clamps (10) and a supporting piece (11), the limiting clamps (10) are arranged at two ends of the steel pipe (7) and are opened and closed by rotating a handle connected with a thread, and the supporting piece (11) is integrally Y-shaped and is arranged between the two limiting clamps (10) and is adjusted in height by the thread so as to support the steel pipe.
7. The lining device for lining process without damage to the lining core pipe according to claim 1, wherein the movable guide wheel (8) is fixed at the middle position of a bearing (13), rotates independently without being influenced by the bearing, the two shoulder positions are respectively connected with two hydraulic rods (16), two ends of the bearing (13) are respectively inserted into a 'return' -shaped limiting device (14), the inner end and the outer end of the limiting device (14) are respectively provided with a limiting nut (15) penetrating through the bearing to limit the position of the bearing (13), so that when the hydraulic rods (16) push forwards and backwards, the bearing (13) moves perpendicular to the limiting device, and the adjustment of the relative position of the movable guide wheel (8) is realized by adjusting the hydraulic rods, thereby changing the tensioning condition of the traction steel cable and further controlling the magnitude of the axial stress acting on the lining pipe.
8. The lining equipment for lining process without damage to lining core pipe according to claim 1, wherein the protective covers (9) are respectively arranged at the inlet and outlet positions of the steel pipe (7), the main body is of steel structure, and two sides are respectively provided with an observation window formed by acrylic plates for observing the lining condition.
9. A method for lining a core tube of a lining without damage in a lining process, which is carried out by using the lining apparatus of any one of claims 1 to 8, comprising the steps of:
(1) selecting a steel pipe (7) with a proper length, placing the steel pipe (7) on a support piece (11), and fixing the steel pipe through clamps (10) at two ends;
(2) selecting a diameter reducing module (2) with a proper diameter reducing amount, and installing the selected diameter reducing module (2) on the equipment rack (1);
(3) two ends of the lining pipe (6) are fixedly connected to the traction heads (4) at two sides;
(4) traction steel cables (5) at two ends of a winch (3) respectively extend out from the left direction and the right direction, the traction steel cable at the left end is connected with a traction head at the left side after being steered by a plurality of fixed guide wheels, the traction steel cable at the right end is connected with a traction head at the right side after being steered by a plurality of rollers and penetrating through a copper pipe (7) and a multistage reducing module (2), and the winch (3) connects a left traction head and a right traction head (4) through the traction steel cables (5) so as to form continuous and stable axial traction force for an inner lining pipe (6);
(5) covering a protective cover, starting a winch (3), pulling a traction head to move forwards by a traction steel cable (5), further driving the lining pipe (6) to move, and reducing the lining pipe (6) after passing through a reducing module to deform so as to gradually enter an inner cavity of the steel pipe;
(6) the hydraulic rod of the movable guide wheel part is adjusted according to the real-time display of the traction force borne by the lining pipe through a display device connected with a wireless tension sensor, so that the position of the movable guide wheel is adjusted, the tensioning condition of the whole traction steel cable is changed by adjusting the relative position of the movable guide wheel (8), the stress acting on the axial direction of the lining pipe is maintained within a safe range within the yield stress of the material, the diameter reducing state of the lining pipe is maintained, and the axial stress acting on the lining pipe is further controlled;
(7) when the two ends of the lining pipe (6) are all pulled into the steel pipe (7), the winch (3) is stopped to operate, the hydraulic rod is contracted, the steel cable is loosened, the stress acting on the axial direction of the lining pipe is released, the lining pipe is placed in a constant-temperature oven at 80 ℃ after naturally rebounding, the secondary rebounding is promoted, the rebounding time is 8 hours, the lining pipe is fully rebounded, and the lining pipe penetrating through the steel pipe (7) is tightly adhered to the inner wall of the steel pipe (7) by utilizing the rebound resilience of the lining pipe (6), so that the preparation of the steel pipe with the plastic lining pipe is completed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110917612.7A CN113715322B (en) | 2021-08-11 | 2021-08-11 | Lining equipment and method for lining core pipe damage-free in lining process |
| PCT/CN2021/120680 WO2023015686A1 (en) | 2021-08-11 | 2021-09-26 | Non-destructive lining device and method for lining core pipe in lining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110917612.7A CN113715322B (en) | 2021-08-11 | 2021-08-11 | Lining equipment and method for lining core pipe damage-free in lining process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113715322A CN113715322A (en) | 2021-11-30 |
| CN113715322B true CN113715322B (en) | 2022-06-03 |
Family
ID=78675453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110917612.7A Active CN113715322B (en) | 2021-08-11 | 2021-08-11 | Lining equipment and method for lining core pipe damage-free in lining process |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113715322B (en) |
| WO (1) | WO2023015686A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560502A (en) * | 2004-02-27 | 2005-01-05 | 广州祥基金属制品有限公司 | Centrifugal spheroidal cast iron pipe with plastic lining |
| CN112549522A (en) * | 2020-11-16 | 2021-03-26 | 临海伟星新型建材有限公司 | Manufacturing equipment and method for lining plastic pipe |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003238080A (en) * | 2002-02-12 | 2003-08-27 | Universal Shipbuilding Corp | Rope tensioner device |
| US20140265023A1 (en) * | 2013-03-14 | 2014-09-18 | SAK Construction, LLC | Die Reduction Machine, Reducing Die, and Method of Installation for a Pipe Liner |
| CN205167541U (en) * | 2015-11-18 | 2016-04-20 | 锐驰高科股份有限公司 | Automatic constant diameter undergauge machine of bushing pipe in HDPE |
| CN206678263U (en) * | 2017-03-17 | 2017-11-28 | 河北宝硕管材有限公司 | A kind of no-dig technique liner reparation plastic pipe size reducing machine |
| JP6565123B2 (en) * | 2017-11-10 | 2019-08-28 | ウラカミ合同会社 | Winch device with auto tension function |
| CN109681717A (en) * | 2019-02-14 | 2019-04-26 | 河南锐迪管道技术服务有限公司 | The towed size reducing machine of HDPE pipeline rehabilitation of O-shaped undergauge module is installed |
| CN212510053U (en) * | 2020-04-10 | 2021-02-09 | 思庚特新能源科技(上海)有限公司 | Traction device for pipeline repair |
-
2021
- 2021-08-11 CN CN202110917612.7A patent/CN113715322B/en active Active
- 2021-09-26 WO PCT/CN2021/120680 patent/WO2023015686A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560502A (en) * | 2004-02-27 | 2005-01-05 | 广州祥基金属制品有限公司 | Centrifugal spheroidal cast iron pipe with plastic lining |
| CN112549522A (en) * | 2020-11-16 | 2021-03-26 | 临海伟星新型建材有限公司 | Manufacturing equipment and method for lining plastic pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023015686A1 (en) | 2023-02-16 |
| CN113715322A (en) | 2021-11-30 |
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