A device for trenchless repair of pipeline defects without flow interruption

Abstract

This invention provides a trenchless, non-interruption-free pipe defect repair device, comprising a central flow pipe section, an ultraviolet heating lamp assembly, a sealing membrane, a thermosetting resin hose, a protective membrane, and a traction device; it also includes at least one pair of telescopic positioning rods, at least one pair of positioning clamps, and at least one pair of positioning ropes, arranged opposite each other at both ends of the thermosetting resin hose and located inside the protective membrane; the telescopic positioning rods are hinged to the outer wall of the central flow pipe section and their length is adjustable; the positioning clamps are clamped at both ends of the thermosetting resin hose; the two ends of the positioning ropes are correspondingly connected to the positioning clamps and the telescopic positioning rods; after the sealing membrane is inflated until the supporting positioning clamps are tightly abutting against the inner wall of the pipe to be repaired, the positioning clamps are triggered to release their clamping of the thermosetting resin hose, achieving precise positioning of the thermosetting resin hose. Through the above positioning, this invention can prevent the location of the pipe defect from deviating from the center of the thermosetting resin hose, improving the quality and efficiency of pipe repair and reducing construction difficulty.

Description

Technical Field

[0001] This invention relates to the field of trenchless repair technology for underground pipelines, specifically to a trenchless repair device for pipeline defects that does not require flow interruption. Background Technology

[0002] As the years of use increase, underground drainage pipes are prone to varying degrees of damage, which can lead to sewage seepage that pollutes the surrounding environment, or external water (groundwater, river water, tap water leakage, etc.) seeping into and diluting the sewage in the pipes, resulting in problems such as increased sewage volume and low concentration. How to solve this pain point has become the focus of attention in the industry.

[0003] Chinese invention patent CN118391536B discloses a device for repairing pipe defects without damage while the pipe is wet (wet refers to the pipe not being blocked). A sealing membrane is installed around the outer wall of a central flow pipe. The middle of the outer wall of the sealing membrane is bonded to the inner wall of a thermosetting resin hose. By inflating the sealing membrane, the thermosetting resin hose is supported and pressed tightly against the inner wall of the pipe to be repaired. However, when the sealing membrane inflates, it tends to deform more in the middle and less at both ends. This makes it difficult to precisely control the bonding position of the thermosetting resin hose, resulting in insufficient repair width around the pipe defect, affecting the repair quality and effect, and ultimately leading to a shorter service life at the repair site.

[0004] In addition, mature thermosetting resin hose products usually have an inner film attached to their inner wall as a protective film, but: (1) If the inner membrane attached to the thermosetting resin hose is extended and enlarged as a sealing membrane, the manufacturing process is difficult and complicated because the length of the sealing membrane does not match that of the thermosetting resin hose itself. (2) If a short film is glued to both ends of the inner membrane attached to the thermosetting resin hose as a sealing film, not only is the gluing difficult and the installation time long, but the presence of the gluing interface will cause the sealing film to leak air easily when it is inflated, resulting in poor expansion effect. (3) If another complete sealing film is prepared and then bonded to the inner film attached to the thermosetting resin hose, the bonding is also difficult. Firstly, it may affect the normal expansion of the sealing film, and secondly, if the bonding is not good, it will also make it difficult to peel off the inner film. Therefore, it is necessary to provide a non-interruption, trenchless repair device for pipeline defects to solve the problems of inaccurate bonding position of thermosetting resin hoses, difficulty in peeling off the inner lining of thermosetting resin hoses, and inconvenience in installing sealing films. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a non-cut-off trenchless repair device for pipeline defects.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A non-interruptible trenchless repair device for pipeline defects includes a central flow pipe section and an ultraviolet heating lamp group, a sealing film, a thermosetting resin hose, a protective film, which are sequentially and fixedly installed around the outer wall of the central flow pipe section, as well as a traction device that can pull the protective film to cover the thermosetting resin hose and the sealing film or remove the cover. It also includes at least one pair of telescopic positioning rods, at least one pair of positioning clamps, and at least one pair of positioning ropes arranged opposite each other at both ends of the thermosetting resin hose and located inside the protective film; the telescopic positioning rods are hinged to the outer wall of the central flow pipe section and their length is adjustable; the positioning clamps are clamped and installed at both ends of the thermosetting resin hose; the two ends of the positioning ropes are correspondingly connected to the positioning clamps and the telescopic positioning rods. After the sealing membrane is inflated, the telescopic positioning rod gradually rotates and extends toward the inner wall of the pipe to be repaired until the sealing membrane support positioning clamp is in close contact with the inner wall of the pipe to be repaired. This triggers the positioning clamp to release its grip on the thermosetting resin hose, thus achieving precise positioning of the thermosetting resin hose (especially at both ends).

[0007] Furthermore, the positioning clamp includes a positioning box, a pressure plate, an unlocking component, and a clamping component. The bottom of the front plate of the positioning box has an opening, and the bottom plate of the positioning box extends towards the opening. The two side plates of the positioning box have grooves that are opposite to each other along the extension direction of the bottom plate. The pressure plate includes an integrally formed front straight plate, a slanted plate, and a rear straight plate. The rear ends of the two sides of the rear straight plate are respectively fixedly installed with sliders. The sliders extend to the outside of the positioning box after passing through the corresponding grooves. The rear end face of the rear straight plate is fixedly connected to the rear end plate of the positioning box through a third tension spring. The front straight plate passes through the opening of the positioning box, and the extension section of the bottom plate of the positioning box and the front straight plate are clamped together on the inner and outer sides of the thermosetting resin hose. The unlocking component is installed in the middle of the positioning box, and the clamping component is installed at the front end of the inner cavity of the positioning box. When the pressure plate slides to the front end of the positioning box cavity, the unlocking component locks the pressure plate, and at the same time, the output end of the clamping component presses against the inclined plate to apply clamping force to the pressure plate; after the unlocking component unlocks, the pressure plate slides to the rear end of the positioning box cavity under the action of the third tension spring, and the clamping component releases the clamping of the pressure plate.

[0008] Furthermore, the unlocking component includes an unlocking button, a force transmission frame, and a pair of positioning posts. The pair of positioning posts are fixedly installed on the bottom plate of the positioning box, and a first compression spring is installed on each positioning post. The unlocking button is installed on the outside of the top plate of the positioning box, and a force transmission frame is fixedly connected to the bottom of the unlocking button. After the force transmission frame passes through the top plate of the positioning box, its bottom is slidably installed on the pair of positioning posts and abuts against the first compression spring. A locking component is fixedly installed on the force transmission frame. When the pressure plate slides to the front end of the inner cavity of the positioning box, the output end of the locking component is inserted into the through hole on the rear straight plate to lock the pressure plate. After pressing the unlocking button, the output end of the locking component is withdrawn from the through hole on the rear straight plate, thereby unlocking.

[0009] Furthermore, the locking assembly includes a locking frame fixedly mounted on the force transmission frame, with a locking pin slidably installed inside the locking frame. The locking pin is connected to the force transmission frame via a second compression spring. When the pressure plate slides to the front end of the positioning box cavity, the locking pin is inserted into the through hole on the rear straight plate as an output end.

[0010] Furthermore, an independent cavity is formed on the front side of the positioning box cavity. The clamping assembly includes a guide rod installed in the cavity with clearance fit. The bottom of the guide rod protrudes outside the cavity. A third compression spring is sleeved on the guide rod. One end of the third compression spring is fixedly connected to the bottom of the cavity, and the other end is fixedly connected to the top of the guide rod. When the pressure plate slides to the inclined plate and squeezes the bottom of the guide rod, the bottom of the guide rod applies a reverse clamping force to the pressure plate.

[0011] Furthermore, a screw hole is formed in the upper part of the cavity, and a screw is installed in the screw hole. One end of the screw abuts against the top of the guide rod. By adjusting the position of the screw in the screw hole, the compression of the third compression spring can be adjusted, thereby adjusting the position of the guide rod relative to the cavity, and thus adjusting the clamping force of the guide rod on the pressure plate.

[0012] Furthermore, the telescopic positioning rod includes an end rod and several transition rods, wherein one end of the first transition rod is hinged to the outer wall of the central flow pipe, the other transition rods are hinged in sequence, the end rod is hinged to the other end of the last transition rod, and the transition rod and the end rod can slide axially relative to the transition rod above them; each transition rod is equipped with a tension spring, and the end of the tension spring is connected to the end of the next transition rod or the end of the end rod.

[0013] Furthermore, one end of the positioning rope is fixedly connected to the other end of the end rod, and the other end of the positioning rope is fixedly connected to the rear end plate of the positioning box.

[0014] A non-interruption, trenchless repair device for pipeline defects also includes: At least one pair of demolding clips are installed at both ends of the inner membrane of the thermosetting resin hose, and are arranged upwardly offset from at least one pair of positioning clips in the central flow pipe section ring. At least one pair of release ropes are positioned opposite each other at both ends of the thermosetting resin hose. One end of each release rope is fixedly connected to the release clamp, and the other end is fixedly connected to the outer wall of the central flow pipe section.

[0015] Furthermore, the demolding clamp includes a handle, with two clamping plates fixedly installed on the same side of the handle. Several clamping pins are fixedly installed at the end of each clamping plate. The two clamping plates are also screwed together by clamping screws to adjust the clamping angle, thereby adjusting the degree of clamping on the inner membrane of the thermosetting resin hose.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: (1) After adopting the telescopic positioning rod, positioning clamp, positioning rope and other structures of the present invention, the sealing film becomes an independent structure, without the need to directly bond the thermosetting resin hose, and can be reused repeatedly. It is low in cost, simple to operate, reliable in quality, low in carbon and environmentally friendly. (2) The installation of thermosetting resin hoses is very simple, which greatly shortens the installation time and also greatly shortens the exposure time of thermosetting resin hoses under the atmosphere and light, thus ensuring the quality of thermosetting resin hoses. (3) The present invention uses a combination of telescopic positioning rod, positioning clamp, positioning rope and other structures to achieve the positioning of thermosetting resin hose in the axial and circumferential directions. When the thermosetting resin hose is in place, the positioning clamp will automatically detach from both ends of the thermosetting resin hose and return to its original state. The whole process does not require any new power and is achieved solely by the expansion of the sealing film and the contact between the inner wall of the pipe to be repaired and the positioning clamp. (4) The present invention can easily remove the inner membrane of thermosetting resin hose through the structure of membrane removal clamp, membrane removal rope, etc., so as to avoid the inner membrane from accidentally falling off during subsequent use of the pipe and causing adverse effects on water flow. (5) By positioning the thermosetting resin hose, the present invention can more accurately attach the thermosetting resin hose to the preset range of the pipe to be repaired, avoid the pipe defect location from deviating from the center position of the thermosetting resin hose, and make the pipe defect location have sufficient repair width, which can improve the pipe repair quality and construction efficiency and reduce construction difficulty. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall layout of the positioning clamps; Figure 2 This is a schematic diagram showing the overall arrangement of the positioning clips and protective film; Figure 3 Schematic diagram of the positioning clip arrangement Figure 1 ; Figure 4 Schematic diagram of the positioning clip arrangement Figure 2 ; Figure 5 This is a structural diagram of the telescopic positioning rod; where, Figure 5 (a) is a schematic diagram of the telescopic positioning rod when it is retracted. Figure 5 (b) is a schematic diagram of the telescopic positioning rod when it is extended. Figure 5 (c) is a sectional view of the telescopic positioning rod when it is extended; Figure 6 This is a schematic diagram of the positioning clamp (clamping); Figure 7 A schematic diagram of the positioning clip (released); Figure 8 for Figure 6 AA section view; Figure 9 for Figure 8 BB section view; Figure 10 This is a schematic diagram of the pressure plate structure; Figure 11 This is a schematic diagram showing the overall arrangement of the positioning clamp and telescopic positioning rod after the sealing film expands; Figure 12 A schematic diagram showing the overall arrangement of the positioning clamp and the telescopic positioning rod after the positioning clamp is released; Figure 13 This is a schematic diagram of the demolding clip. Figure 14 This is a top view of the demolding clamp; Figure 15 This is a schematic diagram of the cross-sectional arrangement of the telescopic positioning rod and the demolding rope.

[0018] In the diagram: 1-Central flow pipe section; 2-Thermosetting resin hose; 2a-Inner membrane; 2b-Outer membrane; 3-UV heating lamp assembly; 4-Protective film; 5-Traction rope; 6-Power cable; 7-High-pressure air hose; 8-Positioning clamp; 801-Base plate; 802-Rear end plate; 803-Top plate; 804-Front end plate; 805-Side plate; 806-Force transmission frame; 807-Positioning post; 808-First compression spring; 809-Second compression spring; 810-Locking post; 811-Third tension spring; 812-Pressure plate; 812a-Rear straight plate; 812b-Sloping plate; 812c-Front straight plate; 812d-Through hole; 813-Opening; 814 - Unlock button; 815 - Locking bracket; 816 - Slider; 817 - Cavity; 818 - Guide rod; 819 - Third compression spring; 820 - Screw; 821 - Screw hole; 822 - Positioning hole; 9 - Telescopic positioning rod; 901 - First rod; 902 - Second rod; 903 - End rod; 904 - Hinge seat; 905 - First tension spring; 906 - Second tension spring; 907 - Pin; 908 - Slot; 10 - Sealing membrane; 11 - Demolding clamp; 1101 - Clamp handle; 1102 - Clamping plate; 1103 - Clamping pin; 1104 - Clamping screw; 1105 - Demolding rope positioning hole; 12 - Demolding rope; 13 - Positioning rope. Detailed Implementation

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments and accompanying drawings.

[0020] In the description of this invention, it should be noted that the terms "upper," "outer," and "inner," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] Example 1

[0022] This embodiment is an improvement upon the pipe defect repair device without damage while the pipe is wet, as disclosed in Chinese invention patent CN118391536B. For ease of installation, the central flow pipe (water pipe) is assembled using prefabricated segments. Central flow pipe segment 1 refers to the core segment with the thermosetting resin hose 2 installed. Other components of the repair device are not described in detail in this embodiment.

[0023] Please see Figures 1-12 This embodiment provides a non-interruption, trenchless repair device for pipeline defects, including a central flow pipe section 1 and a UV heating lamp group 3, a sealing film 10, a thermosetting resin hose 2, and a protective film 4, which are sequentially and fixedly installed around the outer wall of the central flow pipe section 1. It also includes a traction device that can pull the protective film 4 to cover the thermosetting resin hose 2 and the sealing film 10 or remove the cover. A further improvement is that: It also includes at least one pair of telescopic positioning rods 9, at least one pair of positioning clamps 8 and at least one pair of positioning ropes 13 arranged opposite to each other at both ends of the thermosetting resin hose 2 and located inside the protective film 4; the telescopic positioning rods 9 are hinged to the outer wall of the central flow pipe section 1 and their length is adjustable; the positioning clamps 8 are clamped and installed at both ends of the thermosetting resin hose 2; the two ends of the positioning ropes 13 are correspondingly connected to the positioning clamps 8 and the telescopic positioning rods 9. After the sealing membrane 10 is inflated, the telescopic positioning rod 9 gradually rotates and extends toward the inner wall of the pipe to be repaired until the sealing membrane 10 supports the positioning clamp 8 and comes into close contact with the inner wall of the pipe to be repaired. Then, the positioning clamp 8 is triggered to release the clamp on the thermosetting resin hose 2, thereby achieving precise positioning of the thermosetting resin hose 2 (especially at both ends).

[0024] Furthermore, the positioning clamp 8 includes a positioning box, a pressure plate 812, an unlocking component, and a clamping component. The bottom of the front plate 804 of the positioning box has an opening 813. The bottom plate 801 of the positioning box extends towards the opening 813. The two side plates 805 of the positioning box have grooves (not shown in the figure) that are opposite to each other along the extension direction of the bottom plate 801. The pressure plate 812 includes an integrally formed front straight plate 812c, a slanted plate 812b, and a rear straight plate 812a. The rear ends of the two sides of the rear straight plate 812a are respectively fixedly installed with sliders 816. The sliders 816 extend to the outside of the positioning box after passing through the corresponding grooves. The rear end face of the rear straight plate 812a is fixedly connected to the rear end plate 802 of the positioning box through a third tension spring 811. The front straight plate 812c passes through the opening 813 of the positioning box. The extension of the bottom plate 801 of the positioning box and the front straight plate 812c are clamped together on the inner and outer sides of the thermosetting resin hose 2. The unlocking component is installed in the middle of the positioning box, and the clamping component is installed at the front end of the inner cavity of the positioning box. When the pressure plate 812 slides to the front end of the positioning box cavity, the unlocking component locks the pressure plate 812, and at the same time, the output end of the clamping component presses against the inclined plate 812b to apply clamping force to the pressure plate 812; after the unlocking component unlocks, the pressure plate 812 slides to the rear end of the positioning box cavity under the action of the third tension spring 811, and the clamping component releases the clamping of the pressure plate 812.

[0025] Furthermore, the unlocking component includes an unlocking button 814, a force transmission frame 806, and a pair of positioning posts 807. The pair of positioning posts 807 are fixedly installed on the bottom plate 801 of the positioning box, and a first compression spring 808 is installed on each positioning post 807. The unlocking button 814 is installed outside the top plate 803 of the positioning box. The bottom of the unlocking button 814 is fixedly connected to the force transmission frame 806. After the force transmission frame 806 passes through the top plate 803 of the positioning box, its bottom is slidably installed on the pair of positioning posts 807 and abuts against the first compression spring 808. A locking component is fixedly installed on the force transmission frame 806. When the pressure plate 812 slides to the front end of the inner cavity of the positioning box, the output end of the locking component is inserted into the through hole 812d on the rear straight plate 812a to lock the pressure plate 812. After pressing the unlocking button 814, the output end of the locking component exits from the through hole 812d on the rear straight plate 812a, thereby unlocking.

[0026] Furthermore, the locking assembly includes a locking frame 815 fixedly mounted on the force transmission frame 806, and a locking pin 810 is slidably mounted inside the locking frame 815. The locking pin 810 is connected to the force transmission frame 806 through a second compression spring 809. When the pressure plate 812 slides to the front end of the positioning box cavity, the locking pin 810 is inserted into the through hole 812d on the rear straight plate 812a as an output end.

[0027] Furthermore, an independent cavity 817 is formed on the front side of the positioning box cavity. The clamping assembly includes a guide rod 818 installed in the cavity 817 with clearance fit. The bottom of the guide rod 818 protrudes outside the cavity 817. A third compression spring 819 is sleeved on the guide rod 818. One end of the third compression spring 819 is fixedly connected to the bottom of the cavity 817, and the other end is fixedly connected to the top of the guide rod 818. After the bottom of the guide rod 818 contacts the inclined plate 812b in the pressure plate 812, it applies a reverse clamping force to the pressure plate 812.

[0028] Specifically, the bottom of the guide rod 818 protrudes a certain length outside the cavity 817. The protruding section of the bottom of the guide rod 818 is preferably wedge-shaped to match the shape of the inclined plate 812b (the angle between the inclined plate 812b and the front end plate 804 is slightly larger than the wedge angle). When the slider 816 slides along the front end of the groove on the side plate 805, the pressure plate 812 slides towards the front end of the positioning box. When it slides to a certain extent, the protruding section of the bottom of the guide rod 818 just abuts against the inclined plate 812b. However, at this time, the force between the protruding section of the bottom of the guide rod 818 and the inclined plate 812b is very small, and the locking pin 810 is not inserted into the through hole 812d. The front straight plate 812c... The guide rod 818 is only clamped to the outside of the thermosetting resin hose 2, but not tightly. Then, the slider 816 continues to slide, causing the exposed bottom section of the guide rod 818 to make close contact with the inclined plate 812b. Due to the compressive force of the third compression spring 819, the top of the guide rod 818 remains against the top of the cavity 817 and cannot move. Furthermore, the guide rod 818 in the cavity 817 has a clearance fit. At this time, under the pressure of the inclined plate 812b, the guide rod 818 will deflect slightly. Simultaneously, the third compression spring 819 will generate a reaction force to restore the deflection, and the exposed bottom section of the guide rod 818 will also press against the inclined plate 812b, thus providing clamping force for the pressure plate 812. To ensure that the guide rod 818 does not fall out of the cavity 817, a limiting shoulder can be provided at the bottom of the cavity 817, and an enlarged head can be provided at the top of the guide rod 818.

[0029] Furthermore, a screw hole 821 is formed on the upper part of the cavity 817, and a screw 820 is installed in the screw hole 821. One end of the screw 820 abuts against the top of the guide rod 818. By adjusting the position of the screw 820 in the screw hole 821, the compression amount of the third compression spring 819 can be adjusted, thereby adjusting the position of the guide rod 818 relative to the cavity 817, and thus adjusting the clamping force of the guide rod 818 on the pressure plate 812.

[0030] Furthermore, the telescopic positioning rod 9 includes an end rod 903 and several transition rods, wherein one end of the first transition rod is hinged to the outer wall of the central flow pipe, and the other transition rods are hinged in sequence. The end rod 903 is hinged to the other end of the last transition rod, and the transition rod and the end rod 903 can slide axially relative to the previous transition rod. Each transition rod is equipped with a tension spring, and the end of the tension spring is connected to the end of the next transition rod or the end of the end rod 903.

[0031] In a specific embodiment, the transition rod has two sections, which are named the first rod 901 and the second rod 902 for easy distinction. The first rod 901 is the first transition rod section, and the second rod 902 is the last transition rod section. The end of the sealing membrane 10 is fixed by a fixing seat that is fixedly mounted around the outer wall of the central flow pipe section 1. A hinge seat 904 is mounted on the fixing seat. One end of the first rod 901 is hinged to the hinge seat 904. The hinge seat 904 is arranged radially along the central flow pipe section 1. The hinge of the hinge seat 904 is... The axis is arranged perpendicular to the central flow pipe section 1, so the first rod 901 can only rotate in the plane where the axis of the central flow pipe section 1 is located. That is, the first rod 901 is always in the same plane as the axis of the central flow pipe section 1. The first rod 901 is box-shaped and has a box-shaped chamber inside. A first tension spring 905 is installed in the box-shaped chamber. One end of the first tension spring 905 is fixedly connected to the bottom of the box-shaped chamber. The first rod 901 has a slot 908 formed along its length direction. The opening direction of the slot 908 is parallel to the hinge axis direction of the hinge seat 904. One end of the second rod 902 is hinged to the other end of the first rod 901 via a pin 907, and the pin 907 can also slide along the slot 908. At the same time, one end of the second rod 902 is also fixedly connected to the other end of the first tension spring 905. The structure of the second rod 902 is basically the same as that of the first rod 901, with the main difference being in the geometric dimensions. One end of the end rod 903 is hinged to the other end of the second rod 902 via another hinge shaft. The second tension spring 906 inside the second rod 902 is fixedly connected to one end of the end rod 903. The other end of the end rod 903 is equipped with a positioning rope 13. The other end of the positioning rope 13 is fixedly connected to the rear end plate 802 of the positioning box. Although the second rod 902 is hinged to the first rod 901, its rotation angle is limited due to the connection of the first tension spring 905. Similarly, although the end rod 903 is hinged to the second rod 902, its rotation angle is also limited due to the connection of the second tension spring 906, but it can adapt to the expansion and deformation of the sealing membrane 10.

[0032] The specific operation process of this embodiment is as follows: After the traction device removes the protective film 4 from the thermosetting resin hose 2 and the sealing film 10, air is injected into the sealing film 10 through the high-pressure air hose 7. The sealing film 10 gradually expands, the pin 907 slides along the slot 908, and the first tension spring 905 and the second tension spring 906 in the telescopic positioning rod are gradually stretched. At the same time, the first rod 901 rotates relative to the hinge seat 904 to adjust the angle to adapt to the expansion of the sealing film 10. When the middle of the thermosetting resin hose 2 touches the inner wall of the pipe to be repaired, the sealing film 10 expands in a "donut" shape. At this time, the two ends of the thermosetting resin hose 2 may not have yet contacted the inner wall of the pipe to be repaired or the contact stress is extremely low. Therefore, air continues to be injected into the sealing film 10. The internal inflation process allows the top of the positioning clip 8 to gradually abut against the inner wall of the pipe to be repaired. When the reaction force of the inner wall of the pipe to be repaired against the unlocking button 814 reaches a certain deformation, compressing the second spring 809, the locking pin 810 exits from the through hole 812d of the pressure plate 812. The pressure plate 812 is pulled back to the end of the positioning box under the action of the third tension spring 811, thereby releasing the positioning clip 8 from clamping the end of the thermosetting resin hose 2. Then, the positioning clip 8 is pulled back under the action of the telescopic positioning rod 9, and inflation continues into the sealing membrane 10 until the sealing membrane 10 reaches the preset expansion pressure. Then, the ultraviolet heating lamp group 3 continuously heats the thermosetting resin hose 2, causing the thermosetting resin hose 2 to completely cure and solidify. Finally, heating is stopped to complete the repair. The outer membrane 2b is an outer membrane that comes with the thermosetting resin hose 2 product and can adhere to the inner wall of the pipe to be repaired along with the thermosetting resin hose 2.

[0033] In this embodiment, the sealing membrane 10 is a complete membrane independent of the thermosetting resin hose 2. Its two ends are fixed and sealed onto the central flow pipe section 1 via mounting bases. The thermosetting resin hose 2 can be directly sleeved onto the sealing membrane 10 without further processing (such as bonding), or it can be simply bonded for positioning. Then, the protective membrane 4 is pulled by the traction device to cover and seal the thermosetting resin hose 2 and the sealing membrane 10, providing protection. The sealing membrane 10 and the inner membrane 2a of the thermosetting resin hose 2 are made of the same material, such as polyethylene film. The power cable 6 supplies power to the ultraviolet heating lamp assembly 3 and the traction device.

[0034] In this embodiment, the telescopic positioning rod 9 is hinged to the outer wall of the central flow pipe section 1 and located at preset positions at both ends of the sealing membrane 10. The telescopic positioning rod 9 can only rotate within the plane containing the axis of the central flow pipe section 1, and cannot rotate within the cross-section of the pipe to be repaired. The range of rotation of the telescopic positioning rod 9 is small. The telescopic positioning rod 9 is clamped at both ends of the thermosetting resin hose 2 by the positioning clamp 8, and the movable range of the positioning clamp 8 is also very small. Therefore, through the cooperation of the telescopic positioning rod 9, the positioning clamp 8, the positioning rope 13, etc., the thermosetting resin hose 2 can be positioned both axially and circumferentially in the pipe to be repaired. Through the above positioning, the thermosetting resin hose 2 can be more accurately pasted within the preset range of the pipe to be repaired, avoiding the pipe defect position from deviating from the center position of the thermosetting resin hose 2, so that there is sufficient repair width around the pipe defect position to ensure repair quality and extend service life.

[0035] Example 2

[0036] Please see Figures 13-15 This embodiment provides a non-interruption, trenchless repair device for pipeline defects, which also includes: At least one pair of demolding clips 11 are installed at both ends of the inner membrane 2a of the thermosetting resin hose 2, and are arranged in an upward offset manner from at least one pair of positioning clips 8 in the central flow pipe section 1. At least one pair of release ropes 12 are positioned opposite each other at both ends of the thermosetting resin hose 2. One end of each release rope 12 is fixedly connected to the release clamp 11, and the other end is fixedly connected to the outer wall of the central flow pipe section 1.

[0037] Furthermore, the demolding clamp 11 includes a handle 1101, on which two clamping plates 1102 are fixedly mounted. Each clamping plate 1102 has several clamping pins 1103 fixedly mounted at its end. The two clamping plates 1102 are also screwed together by clamping screws 1104 to adjust the clamping angle, thereby adjusting the clamping degree of the inner membrane 2a. A demolding rope positioning hole 1105 is provided at the end of the handle 1101 for mounting a demolding rope 12. The other end of the demolding rope 12 is fixedly connected to a fixing seat (used to fix the sealing membrane) on the outer wall of the central flow pipe section 1. The demolding clamp 11 can be made of stainless steel, such as 304 stainless steel or 316 stainless steel.

[0038] The positioning clamps 8 are used to position the two ends of the thermosetting resin hose 2 (including positioning along the central flow tube axis and positioning at a 360° angle on the vertical axial plane). The circumferential expansion pressure of the sealing membrane 10 can be considered to be uniformly distributed, so at least one pair of positioning clamps 8 is provided. The number of telescopic positioning rods 9 and positioning ropes 13 matches the number of positioning clamps 8, and they are preferably positioned directly above the central flow tube section 1. The demolding clamps 11 are used to control the shedding of the inner membrane attached to the thermosetting resin hose 2 product. Therefore, the number of demolding clamps 11 can be more than that of positioning clamps 8, for example, 2-4, but they are arranged in a staggered manner with the positioning clamps 8 in the circumferential direction to improve the demolding quality and efficiency.

[0039] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A non-interruption, trenchless repair device for pipeline defects, comprising a central flow pipe section and, sequentially and fixedly mounted around the outer wall of the central flow pipe section, an ultraviolet heating lamp assembly, a sealing film, a thermosetting resin hose, and a protective film, and a traction device capable of pulling the protective film to cover the thermosetting resin hose and the sealing film or removing the cover; characterized in that: It also includes at least one pair of telescopic positioning rods, at least one pair of positioning clamps, and at least one pair of positioning ropes arranged opposite each other at both ends of the thermosetting resin hose and located inside the protective film; the telescopic positioning rods are hinged to the outer wall of the central flow pipe section and their length is adjustable; the positioning clamps are clamped and installed at both ends of the thermosetting resin hose; the two ends of the positioning ropes are correspondingly connected to the positioning clamps and the telescopic positioning rods. After the sealing membrane is inflated, the telescopic positioning rod gradually rotates and extends toward the inner wall of the pipe to be repaired until the sealing membrane support positioning clamp is tightly against the inner wall of the pipe to be repaired. This triggers the positioning clamp to release its grip on the thermosetting resin hose, thus achieving precise positioning of the thermosetting resin hose.

2. The non-interruption, trenchless repair device for pipeline defects according to claim 1, characterized in that: The positioning clamp includes a positioning box, a pressure plate, an unlocking component, and a clamping component. The bottom of the front plate of the positioning box has an opening, and the bottom plate of the positioning box extends towards the opening. The two side plates of the positioning box have grooves that are opposite to each other along the extension direction of the bottom plate. The pressure plate includes an integrally formed front straight plate, a slanted plate, and a rear straight plate. The rear ends of the two sides of the rear straight plate are respectively fixedly installed with sliders. The sliders extend to the outside of the positioning box after passing through the corresponding grooves. The rear end face of the rear straight plate is fixedly connected to the rear end plate of the positioning box through a third tension spring. The front straight plate passes through the opening of the positioning box, and the extension section of the bottom plate of the positioning box and the front straight plate are clamped together on the inner and outer sides of the thermosetting resin hose. The unlocking component is installed in the middle of the positioning box, and the clamping component is installed at the front end of the inner cavity of the positioning box. When the pressure plate slides to the front end of the positioning box cavity, the unlocking component locks the pressure plate, and at the same time, the output end of the clamping component presses against the inclined plate to apply clamping force to the pressure plate; after the unlocking component unlocks, the pressure plate slides to the rear end of the positioning box cavity under the action of the third tension spring, and the clamping component releases the clamping of the pressure plate.

3. The non-interruption, trenchless repair device for pipeline defects according to claim 2, characterized in that: The unlocking assembly includes an unlocking button, a force transmission frame, and a pair of positioning posts. The pair of positioning posts are fixedly installed on the bottom plate of the positioning box, and a first compression spring is installed on each positioning post. The unlocking button is installed on the outside of the top plate of the positioning box, and the bottom of the unlocking button is fixedly connected to the force transmission frame. After the force transmission frame passes through the top plate of the positioning box, its bottom is slidably installed on the pair of positioning posts and abuts against the first compression spring. A locking assembly is fixedly installed on the force transmission frame. When the pressure plate slides to the front end of the inner cavity of the positioning box, the output end of the locking assembly is inserted into the through hole on the rear straight plate to lock the pressure plate. After pressing the unlocking button, the output end of the locking assembly is withdrawn from the through hole on the rear straight plate, thereby unlocking.

4. The non-interruption, trenchless repair device for pipeline defects according to claim 3, characterized in that: The locking assembly includes a locking frame fixedly mounted on the force transmission frame, a locking pin slidably mounted inside the locking frame, and the locking pin connected to the force transmission frame via a second compression spring; when the pressure plate slides to the front end of the positioning box cavity, the locking pin is inserted into the through hole on the rear straight plate as an output end.

5. The non-interruption, trenchless repair device for pipeline defects according to claim 3, characterized in that: The front side of the positioning box cavity also forms an independent cavity. The clamping assembly includes a guide rod installed in the cavity and is clearance-fitted. The bottom of the guide rod protrudes outside the cavity. A third compression spring is sleeved on the guide rod, and one end of the third compression spring is fixedly connected to the bottom of the cavity, and the other end is fixedly connected to the top of the guide rod. When the pressure plate slides to the inclined plate and squeezes the bottom of the guide rod, the bottom of the guide rod applies a reverse clamping force to the pressure plate.

6. The non-interruption, trenchless repair device for pipeline defects according to claim 5, characterized in that: A screw hole is formed in the upper part of the cavity, and a screw is installed in the screw hole. One end of the screw abuts against the top of the guide rod. By adjusting the position of the screw in the screw hole, the clamping force of the guide rod on the pressure plate is adjusted.

7. The non-interruption, trenchless repair device for pipeline defects according to claim 3, characterized in that: The telescopic positioning rod includes an end rod and several transition rods. One end of the first transition rod is hinged to the outer wall of the central flow pipe, and the other transition rods are hinged in sequence. The end rod is hinged to the other end of the last transition rod, and the transition rod and the end rod can slide axially relative to the transition rod above them. Each transition rod has a tension spring installed inside, and the end of the tension spring is connected to the end of the next transition rod or the end of the end rod.

8. The non-interruption, trenchless repair device for pipeline defects according to claim 7, characterized in that: One end of the positioning rope is fixedly connected to the other end of the end rod, and the other end of the positioning rope is fixedly connected to the rear end plate of the positioning box.

9. The non-interruption, trenchless repair device for pipeline defects according to any one of claims 1-8, characterized in that: Also includes: At least one pair of demolding clips are installed at both ends of the inner membrane of the thermosetting resin hose, and are arranged upwardly offset from at least one pair of positioning clips in the central flow pipe section ring. At least one pair of release ropes are positioned opposite each other at both ends of the thermosetting resin hose. One end of each release rope is fixedly connected to the release clamp, and the other end is fixedly connected to the outer wall of the central flow pipe section.

10. The non-interruption, trenchless repair device for pipeline defects according to claim 9, characterized in that: The film removal clamp includes a handle, and two clamping plates are fixedly installed on the same side of the handle. Several clamping pins are fixedly installed at the end of each clamping plate. The two clamping plates are also screwed together by clamping screws to adjust the clamping angle, thereby adjusting the degree of clamping on the inner film of the thermosetting resin hose.

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