Pipeline repair method and equipment

Abstract

The present invention relates to the field of pipeline repair, and in particular to a pipeline repair method and apparatus. The method includes steps such as sealing a box, sealing water, cutting pipes, replacing pipes, repairing, and securing pipes. The apparatus includes a repair box, a gate valve, a cutting saw module, a manipulator module, and a pushing device. The present invention utilizes a repair box to seal a leaking pipe, performs a cutting operation within the repair box, and utilizes a pushing device to press the ends of a telescoping device against the cut pipe opening within the repair box. This allows for wet repairs, has a relatively wide range of applications, and does not affect the normal operation of the pipe.

Description

Technical Field

[0001] The present invention relates to a repair method and equipment, in particular to a pipeline repair method and equipment. Background Art

[0002] During the use of the pipeline network, water leakage problems are inevitable. When water leakage problems occur, the pipeline network needs to be repaired in time. There are currently two main methods for repairing pipelines. One is to install repair materials such as half joints on the outer surface of the pipeline. The pipeline can be repaired without stopping the water supply, but it is limited to repairing small cracks on the pipeline. When the cracks on the pipeline are relatively large, or the leak is located at the valve body or joint, it cannot be used, and the scope of application is relatively narrow. The other is to cut off the damaged pipeline when the water supply is cut off, and then install a telescopic connection valve at the cut position to achieve repair. Since the pipeline needs to stop the water supply, it affects the normal use of the pipeline.

[0003] In view of this, the applicant conducted an in-depth study on the above issues, which led to the present case. Summary of the Invention

[0004] The object of the present invention is to provide a pipeline repair method and equipment that has a relatively wide range of applications and does not affect the normal use of the pipeline.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A pipeline repair method comprises the following steps:

[0007] S1. Sealing the box, determining the leaking pipe and the location of the leak, and sealingly and securely connecting the repair box to the leaking pipe. The repair box is provided with a gate valve, which, when closed, separates the inner cavity of the repair box into a repair chamber and an operating chamber, wherein the leaking location is located in the repair chamber.

[0008] S2, sealing the water, closing the gate valve, installing an automatic cutting device in the operating room, and sealing the operating room;

[0009] S3, cutting the pipe: opening the gate valve to connect the repair chamber and the operating chamber, extending the automatic cutting device into the repair chamber to cut off the leaking pipe section, and then resetting the automatic cutting device;

[0010] S4. Replace the pipe, close the gate valve, remove the automatic cutting device from the operating room, and install a telescopic clamping device in the operating room. The telescopic clamping device clamps a telescope, and the telescope is installed with a pushing device. Then, seal the operating room.

[0011] S5. Repairing: Open the gate valve to connect the repair chamber and the operating chamber, use the telescopic clamping device to move the expander to the position corresponding to the leaking pipe, and then use the pushing device to extend the expander so that each end of the expander is sealed and connected to the leaking pipe;

[0012] S6. Fix the connection, drain the water in the repair box, then remove the repair box from the leaking pipe, fix each end of the expansion joint to the leaking pipe, and remove the pushing device from the expansion joint to complete the pipe repair.

[0013] As an improvement of the present invention, the leaking pipe is a straight pipe section, a three-way pipe or a four-way pipe.

[0014] As an improvement of the present invention, the operating chamber is exhausted while the gate valve is opened.

[0015] As an improvement of the present invention, in step S4, after the telescopic clamping device is installed in the operating chamber, the operating chamber is first sealed, the gate valve is opened to connect the repair chamber and the operating chamber, the leaking pipe section is picked up into the operating chamber using the telescopic clamping device, and then the gate valve is closed, and the leaking pipe section is taken out of the operating chamber, and then the telescopic device is clamped on the telescopic clamping device.

[0016] A pipeline repair device, comprising:

[0017] A repair box, the repair box comprising a first half box body and a second half box body that are detachably fixedly connected to each other, the first half box body having at least two first semicircular grooves on a side facing the second half box body, the second half box body having second semicircular grooves on a side facing the first half box body that respectively cooperate with each of the first semicircular grooves on a one-to-one basis, a through hole for inserting a pipe is formed between the mutually cooperating first semicircular grooves and the second semicircular grooves, and an operation window is provided on a side wall of the second half box body;

[0018] A gate valve, mounted on the second half of the box body, for separating the inner cavity of the repair box into a repair chamber and an operating chamber that are independent of each other;

[0019] a cutting saw module, the cutting saw module comprising a cutting cover plate for sealing the operating window and fixedly connected to the second half of the housing, a cutting telescopic cylinder mounted on the cutting cover plate, a cutting support plate fixedly connected to the piston rod of the cutting telescopic cylinder, and an automatic cutting device mounted on the cutting support plate;

[0020] A manipulator module, the manipulator module comprising a clamping cover plate for sealing the operating window and fixedly connected to the second half-box, a clamping telescopic cylinder mounted on the clamping cover plate, and a telescopic clamping device fixedly connected to the piston rod of the clamping telescopic cylinder; and

[0021] A pushing device is fixedly connected to the telescopic clamping device or arranged independently of the telescopic clamping device, and is used to press the expansion joint to be installed onto the leaking pipe.

[0022] As an improvement of the present invention, a box sealing strip is provided between the first half box and the second half box, and a pipe sealing strip is provided at the bottom of each of the first semicircular grooves and each of the second semicircular grooves.

[0023] As an improvement of the present invention, the outer side wall of the first half box body is fixedly connected or integrally connected with a first ear plate at a position close to the second half box body, and a first locking hole is provided on the first ear plate. The outer side wall of the second half box body is fixedly connected or integrally connected with a second ear plate that cooperates with the first ear plate, and a second locking hole that cooperates with the first locking hole is provided on the second ear plate. The same connecting bolt is inserted through the mutually cooperating first locking hole and second locking hole.

[0024] As an improvement of the present invention, an observation window is provided on the first half box body and / or the second half box body, and a transparent plate is sealed on the observation window.

[0025] As an improvement of the present invention, the outer side wall of the repair box can be detachably and fixedly connected with a pipeline anti-drop assembly at a position corresponding to each of the through holes.

[0026] As an improvement of the present invention, the pipeline anti-detachment assembly includes two half-pressure covers that are detachably fixed to each other by locking bolts. The two half-pressure covers together form a pressure cover for clamping the pipeline. A locking block is provided on the inner side of each half-pressure cover, and each half-pressure cover is detachably fixed to the repair box. The locking bolts are arranged perpendicular to the inner hole of the pressure cover.

[0027] As an improvement of the present invention, the outer side wall of the first half box body is fixedly connected or integrally connected with a first half ring body at a position corresponding to each of the first semicircular grooves, and the outer side wall of the second half box body is fixedly connected or integrally connected with a second half ring body that matches each of the first half ring bodies one-to-one. The first half ring body and the second half ring body that match each other together form a flange ring, the inner hole of the flange ring is coaxially arranged with the corresponding through hole, and the pipeline anti-detachment component is indirectly fixedly connected to the repair box by being fixedly connected to the corresponding flange ring.

[0028] As an improvement of the present invention, the inner side wall of the inner hole of the flange ring has a box end tapered surface, and the inner sides of the first half ring body and the second half ring body are respectively provided with a box end semi-sealing ring that abuts against the box end tapered surface. The two box end semi-sealing rings abut against each other and together form a box end sealing ring for being sleeved on the pipeline;

[0029] A reducing seat is detachably fixedly connected between the repair box and the pipe anti-slip assembly. The reducing seat comprises two half-seat bodies detachably fixedly connected to each other. A reducing hole for inserting a pipe is formed between the two half-seat bodies, and reducing sealing strips are respectively provided between the two half-seat bodies at positions on both sides of the reducing hole. One end of the reducing seat is pressed tightly against the end of the box end sealing ring away from the repair box.

[0030] The diameters of the mouths at both ends of the reducing hole are different, and the side wall of the mouth of the reducing hole at the end away from the repair box has a pipe end tapered surface, and the inner side of each half seat is respectively provided with a pipe end semi-sealing ring that abuts against the pipe end tapered surface. The two pipe end semi-sealing rings abut against each other and jointly form a pipe end sealing ring for being mounted on the pipeline, and one end of the pressure cover is pressed tightly against the end of the pipe end sealing ring away from the repair box.

[0031] As an improvement of the present invention, a through groove is provided on the outer side wall of the second half box body, and the gate valve includes a support fixedly connected to the outer side wall of the second half box body, a baffle slidably connected to the through groove, a screw rotatably connected to the support, and a handwheel or motor for driving the screw to rotate, the screw is spirally connected to the baffle, and the screw and the baffle are located in the same plane or are arranged parallel to each other, when the baffle slides to the extreme position in the direction away from the second half box body, the end of one end of the baffle is located in the through groove.

[0032] As an improvement of the present invention, the automatic cutting device includes a slide rail fixedly connected to the cutting support plate, a slide seat slidably connected to the slide rail, a sliding motor for driving the slide seat to slide, a transmission box fixedly connected to the slide seat, a worm gear rotatably connected to the transmission box, a reciprocating rod slidably connected to the transmission box, a saw blade detachably connected to the reciprocating rod, a cutting motor installed on the transmission box, and a worm gear connected to the output shaft of the cutting motor, the worm gear is meshed with the worm gear, and a transmission pin is fixedly connected to the side of the worm gear and is staggered with the axis of the worm gear. A slide groove is provided on the reciprocating rod, and the transmission pin slides through the slide groove.

[0033] As an improvement of the present invention, the transmission box is further fixedly connected to a support rod, one end of which is rotatably connected to a roller that abuts against the blade back of the saw.

[0034] As an improvement of the present invention, there are 2-4 automatic cutting devices.

[0035] As an improvement of the present invention, the telescopic clamping device includes a movable plate fixedly connected to the piston rod of the clamping telescopic cylinder, a clamping seat fixedly connected to the movable plate, and a clamping assembly installed on the clamping seat, and the clamping assembly includes two mutually cooperating clamping jaws and a clamping cylinder for driving the two clamping jaws to rotate toward or away from each other.

[0036] As an improvement of the present invention, there are more than two clamping assemblies, and the clamping assemblies are arranged in sequence in a straight line.

[0037] As an improvement of the present invention, the pushing device includes a non-one-way hydraulic cylinder and pushing blocks respectively fixedly connected to the piston rods of the non-one-way hydraulic cylinder.

[0038] As an improvement of the present invention, drainage holes are provided on the first half box body, the second half box body, the cutting cover plate and / or the clamping cover plate, and drainage valves are installed on the drainage holes.

[0039] As an improvement of the present invention, a waterproof camera is provided in the repair box.

[0040] As an improvement of the present invention, the second half box body comprises a valve housing and a box body which are detachably fixedly connected to each other, and the gate valve is mounted on the valve housing.

[0041] By adopting the above scheme, the present invention has the following beneficial effects:

[0042] 1. The present invention uses a repair box to seal the leaking pipe, performs cutting operations inside the repair box, and uses a pushing device to press the two ends of the expander onto the cut pipe mouth inside the repair box, which can achieve water repair. It has a relatively wide range of applications and does not affect the normal use of the pipeline.

[0043] 2. By setting up gate valves and operating windows, it is easy to replace cutting devices, clamping devices and other maintenance tools, avoiding the need to pre-set all maintenance tools in the repair box, helping to reduce the complexity of the equipment structure and the volume of the repair tool, and is also more convenient to use.

[0044] 3. By setting the cutting cover and the clamping cover, it is convenient to quickly replace the automatic cutting device and the telescopic clamping device, thereby improving the efficiency of on-site operations.

[0045] Figures in the specification

[0046] Figure 1 This is a schematic structural diagram of the pipeline repair device in Example 1;

[0047] Figure 2 This is a structural diagram of the first half box and the reducer in Example 1;

[0048] Figure 3 This is a schematic structural diagram of the second half box in Example 1;

[0049] Figure 4 This is a schematic structural diagram of the cutting module in Example 1, with some components omitted;

[0050] Figure 5 Schematic diagram of the coordination structure of the manipulator module and the pushing device in Example 1;

[0051] Figure 6 This is a schematic diagram of the structure of the pipeline repair equipment in Example 2.

[0052] The corresponding symbols in the figure are as follows:

[0053] 10-repair box; 11-first half of the box;

[0054] 12-second half box; 13-first ear plate;

[0055] 14-first locking hole; 15-second ear plate;

[0056] 16-second locking hole; 17-first semicircular groove;

[0057] 18-second semicircular groove; 19-through groove;

[0058] 20-gate valve; 21-support;

[0059] 22- baffle; 23- hand wheel;

[0060] 30-cutting module; 31-cutting cover plate;

[0061] 32-cutting telescopic cylinder; 33-cutting support plate;

[0062] 34- transmission pin; 35- slide groove;

[0063] 36-support rod; 37-roller;

[0064] 40-manipulator module; 41-clamping cover;

[0065] 42-clamping telescopic cylinder; 43-clamping seat;

[0066] 44-clamping assembly; 45-moving plate;

[0067] 46-clamping cylinder; 50-pushing device;

[0068] 51- non-one-way hydraulic cylinder; 52- push block;

[0069] 60-Automatic cutting device; 61-Slide rail;

[0070] 62-slide seat; 63-sliding motor;

[0071] 64-transmission box; 65-turbine;

[0072] 66-reciprocating rod; 67-saw blade;

[0073] 68-cutting motor; 69-worm;

[0074] 70-transparent plate; 71-drain valve;

[0075] 73-half gland; 74-locking block;

[0076] 75-first half ring body; 76-second half ring body;

[0077] 77-half seat body; 79-tube end plate sealing ring;

[0078] 81-valve housing; 82-box body. DETAILED DESCRIPTION

[0079] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0080] Example 1.

[0081] This embodiment provides a pipeline repair method, comprising the following steps:

[0082] S1. Seal the box and locate the leaking pipe and the leaking location. The specific method for determining the leaking pipe and the leaking location is conventional and not the focus of this embodiment. The focus of this embodiment is to seal and fix a sealed repair box to the leaking pipe so that the leaking location is located inside the repair box. This is the prerequisite for performing water-filled pipe repair.

[0083] The repair box used in this embodiment is provided with a gate valve. When the gate valve is closed, the inner cavity of the repair box is divided into a repair chamber and an operating chamber that are independent of each other. The repair chamber and the operating chamber are not connected to each other and are relatively closed. When the gate valve is opened, the repair chamber and the operating chamber are connected to each other. The above-mentioned water leakage location is located in the repair chamber. In this way, the operating chamber can be used as a buffer space to facilitate the removal and placement of repair tools.

[0084] S2. Seal the water supply. Close the gate valve. Any leaking water will be stored in the repair chamber. Once the chamber is filled with water, the pipe will stop leaking, ensuring the water supply pressure and reducing the impact on the pipe during the repair. An automatic cutting device (one of the repair tools) is then installed in the operating room. This can be a commercially available cutting device, as long as it can be controlled from outside the repair box to automatically cut the pipe. After installing the automatic cutting device, seal the operating room.

[0085] S3. Cut the pipe. Open the gate valve to connect the repair chamber and the operating chamber. Since the operating chamber is now sealed, the pipe will stop leaking after the water fills the operating chamber, ensuring the water supply pressure in the pipe. Then, use an automatic cutting device to reach into the repair chamber and cut off the leaking pipe section (i.e., the section of pipe with the leaking location). It should be noted that the leaking pipe section to be cut off can be a straight pipe section, a three-way pipe, or a four-way pipe. In other words, the leaking pipe can be equipped with a three-way, four-way, or other connecting valves.

[0086] After that, the automatic cutting device resets and returns to the operating room. At this time, the leaking pipe cut off may flow into the operating room under the impact of water pressure. Of course, even if the leaking pipe cut off stays in the repair room, as long as it does not occupy its original position, it will not affect subsequent operations.

[0087] S4. Replace the pipe and close the gate valve to disconnect the repair chamber from the operating chamber. Open the operating chamber and drain the water. This will not affect the water pressure in the repair chamber, helping to mitigate pressure fluctuations during the repair. The automatic cutting device is then removed from the operating chamber, and a telescopic clamping device (one of the repair tools) is installed in the operating chamber. The telescopic clamping device can also be purchased directly from the market. It is primarily used to insert the expansion joint that replaces the leaking pipe section into the repair chamber and, when necessary, to remove the cut leaking pipe that remains within the repair chamber.

[0088] Of course, the telescopic clamping device placed in the operating room needs to be clamped with a telescope, which can be a conventional telescope, for example, a bellows with opening and closing valves at both ends is used as a telescope, or a limited telescope disclosed in the Chinese utility model patent with publication number CN210135354U is used as a telescope, or a pipe telescopic connector disclosed in the Chinese utility model patent with publication number CN217208260U is used, etc. In addition, the telescope can also be a three-way valve or a four-way valve. The specific type depends on the type of the leaking pipe section that is cut off. In this embodiment, the leaking pipe section is a straight pipe section and the telescope is a two-way valve as an example for explanation.

[0089] The expansion joint is equipped with a pressing device. The pressing device can also be a conventional device, as long as it can press the ends of the expansion joint against the leaking pipe. The pressing device can be installed directly on the expansion joint or indirectly on the expansion joint by installing it on a telescopic clamping device. The operating room is then sealed.

[0090] It should be noted that if the leaking pipe that has been cut is not washed away by the water flow and still occupies its original position (for example, a large-diameter cast iron pipe), then after installing the telescopic clamping device in the operating room, it is necessary to first seal the operating room, open the gate valve to connect the repair room and the operating room, use the telescopic clamping device to pick up the leaking pipe section into the operating room, then close the gate valve, and then remove the leaking pipe section from the operating room. Only then can the telescopic clamping device be clamped on the telescopic clamping device, that is, the leaking pipe section needs to be removed first. Of course, if the leaking pipe section is washed into the operating room by the water flow, the leaking pipe section can be removed from the operating room when installing the telescopic clamping device in the operating room.

[0091] S5. Repair. Open the gate valve to connect the repair room and the operating room. Use the telescopic clamping device to move the expander to the position corresponding to the leaking pipe at any time, and arrange the ports of the expander to correspond to the gaps on the leaking pipe section one by one. Then use the pushing device to stretch the expander so that the ends of the expander are respectively sealed one-to-one with the gaps in the leaking pipe. At this time, the leaking pipe and the repair room are no longer connected in detail.

[0092] It should be noted that the specific sealing connection between the expansion joint and the leaking pipe depends on the structure of the expansion joint used. For example, if a socket-type expansion joint is used, when the expansion joint is extended, the pipe will pass through the expansion joint and the sealing ring inside the expansion joint will be used to achieve sealing. If an end-face sealed expansion joint is used, a flange that matches the expansion joint needs to be sealed and fixed on the pipe before repair. In this embodiment, the socket-type expansion joint is used as an example for explanation.

[0093] Preferably, in the above steps, when the gate valve needs to be opened, the exhaust valve is used to exhaust the operating chamber at the same time as the gate valve is opened. When the operating chamber is filled with water, the exhaust is stopped. This can prevent the air pressure inside the operating chamber from increasing after water enters the operating chamber and affecting subsequent operations. Of course, when the gate valve is closed, the exhaust valve can also be used to exhaust or drain the repair chamber to reduce the operating pressure.

[0094] S6. Fix the connection. Drain the water from the repair box (including the repair room and the operation room). Then remove the repair box from the leaking pipe. Fix each end of the expansion joint to the leaking pipe (the leaking pipe will no longer leak at this time. For the convenience of description, it is still called a leaking pipe). Remove the pushing device from the expansion joint to complete the pipe repair. The entire repair process does not require water outage, and the pipeline pressure fluctuation is small, so the impact on use is relatively small.

[0095] The specific connection method of fixing each end of the expansion joint to the leaking pipe can be a conventional method, for example, using a clamp to fix each end of the expansion joint to the pipe, or first using the clamping petals used in the flange quick connection anti-detachment joint disclosed in the Chinese utility model patent with publication number CN208793853U to hold the pipe tightly, and then connecting the ends of the expansion joint to the corresponding clamping petals by bolts to achieve a fixed connection between the expansion joint and the pipe.

[0096] It should be noted that there is no strict order requirement between the two operations of removing the repair box from the leaking pipe and fixing each end of the telescopic device to the leaking pipe and removing the pushing device from the telescopic device. The specific order depends on the operating conditions at the repair site. If the repair box is removed from the leaking pipe first, then during disassembly, if the pushing device and the telescopic clamping device are connected, the two should be separated from each other to ensure that the pushing device still maintains a one-to-one sealed connection between each end of the telescopic device and each notch of the leaking pipe to avoid water leakage, and at the same time ensure that the telescopic clamping device can be separated from the pipe before the repair box is disassembled; if each end of the telescopic device is fixed to the leaking pipe first, the first half of the box needs to be removed from the second half of the box before operation so that the operator's hand can reach deep into the repair room to operate.

[0097] like Figure 1-Figure 5 As shown, this embodiment also provides a pipeline repair device that can be used in the above-mentioned pipeline repair method. The pipeline repair device includes a repair box 10, a gate valve 20, a cutting saw module 30, a robot module 40, and a pushing device 50. The cutting saw module 30 can be used independently, that is, this embodiment also essentially discloses a cutting saw module. In addition, the repair box 10 and gate valve 20 can also be used independently as a whole, and do not necessarily need to be used together with the cutting saw module 30, the robot module 40, and the pushing device 50. That is, this embodiment also essentially discloses a repair box with a gate valve.

[0098] The repair box 10 is rectangular and includes a first half box body 11 and a second half box body 12 which are detachably fixedly connected to each other. In this embodiment, the outer side wall of the first half box body 11 is fixedly connected or integrally connected with a first ear plate 13 at a position close to the second half box body 12. There can be only one first ear plate 13. In this case, the first ear plate 13 is a ring plate and is arranged around the first half box body 11. There can also be multiple first ear plates 13. In this case, each first ear plate 13 is arranged before the first half box body 11. A first locking hole 14 is opened on the first ear plate 13. There are multiple first locking holes 14 and they are arranged around the first half box body 11. The outer side walls of the two half boxes 12 are fixedly connected or integrally connected with a second ear plate 15 that cooperates with the first ear plate 13. The number and structure of the second ear plates 15 are the same as those of the first ear plates 13. The second ear plate 15 is provided with a second locking hole 16 that cooperates one-to-one with the first locking hole 14. The same connecting bolt is inserted through the first locking hole and the second locking hole that cooperate with each other. Of course, a nut needs to be connected to the connecting bolt, or one of the first locking hole and the second locking hole that cooperate with each other is set as a threaded hole, so that the connecting bolt can be used to achieve a detachable connection between the first half box 11 and the second half box 12.

[0099] At least two first semicircular grooves 17 are provided on the side of the first half box 11 facing the second half box 12. The number and relative positions of the first semicircular grooves 17 depend on the type of pipe section where the leaking position of the pipe to be repaired is located. In this embodiment, four second semicircular grooves 17 are provided on the first half box 11 as an example for explanation. The four second semicircular grooves 17 are respectively located on the four circumferential side walls of the repair box 10; the second half box 12 is provided with second semicircular grooves 18 on the side facing the first half box 11, which are respectively matched with the first semicircular grooves 17 one-to-one. A through hole for inserting the pipe is formed between the mutually matched first semicircular grooves 17 and the second semicircular grooves 18. When in use, the through hole without the pipe needs to be sealed with a plug.

[0100] An operating window is provided on the side wall of the second half box 12. Preferably, the operating window is provided on the side of the second half box 12 away from the first half box 11, so as to facilitate operation. A gate valve 20 is installed on the second half box 12 to separate the inner cavity of the repair box 10 into a repair chamber and an operating chamber that are independent of each other. Of course, the operating chamber and the operating window need to be located on both sides of the gate valve 20 to ensure that the sealing performance of the operating chamber is not affected when the operating window is opened. Specifically, a through groove 19 is provided on the outer wall of the second half box 12. The gate valve 20 includes a support 21 fixedly connected to the outer wall of the second half box 12, a baffle 22 slidably connected to the through groove 19, a screw rotatably connected to the support 21, and a handwheel 23 or a motor for driving the screw to rotate, wherein the baffle 22 is at the interface between the first half box 11 and the second half box 12. The screw is arranged in parallel, and the screw is spirally connected to the baffle 22. The screw and the baffle 22 are located in the same plane or arranged parallel to each other. When the baffle 22 slides away from the second half of the housing 21 to the limit position, one end of the baffle 22 is located in the through slot 19. When the baffle 22 slides away from the handwheel 23 or the motor to the limit position, the baffle 22 still penetrates the through slot 19. In addition, the inner side wall of the second half of the housing 12 is provided with a sealing groove at a position corresponding to the baffle 22. The baffle 22 is slidably connected to the sealing groove to improve the sealing effect. After the gate valve 20 is closed, the baffle 22 can effectively prevent water in the repair chamber from flowing into the operating chamber. During use, the screw is driven by the handwheel 23 or the motor to rotate, thereby pushing the baffle 22 to slide in the through slot 19. When the baffle 22 slides away from the second half of the housing 21 to the limit position, the gate valve 20 is closed. Otherwise, the gate valve 20 is opened.

[0101] Preferably, in order to improve the sealing performance, in this embodiment, a box sealing strip is provided between the first half box 11 and the second half box 12 to prevent water leakage in the repair chamber, and a pipe sealing strip is provided at the bottom of each first semicircular groove 17 and each second semicircular groove 18, and the corresponding pipe sealing strips together form a circular sealing ring strip to prevent water leakage at the connection position between the leaking pipe and the repair box 10.

[0102] Preferably, to facilitate observation of the repair chamber during use, in this embodiment, observation windows are provided on the first half of the housing 11 and / or the second half of the housing 12, and a transparent plate 70 is sealed over the observation windows. Furthermore, a waterproof camera (not shown) is provided within the repair chamber of the repair box 10. Multiple waterproof cameras may be provided to allow observation of the repair chamber from multiple angles and facilitate control of various operational actions. The specific placement of the waterproof cameras can be tailored to actual needs and will not be detailed here.

[0103] Preferably, in order to improve the connection stability between the pipeline and the repair box 10, the outer wall of the repair box 10 can be detachably fixedly connected to the pipeline anti-slip assembly at the position corresponding to each through hole. The pipeline anti-slip assembly includes two half-pressure covers 73 that are detachably fixed to each other by locking bolts. The two half-pressure covers 73 together form a pressure cover for holding the pipeline, wherein the locking bolts are arranged perpendicular to the inner hole of the pressure cover. When in use, the two half-pressure covers 73 are respectively buckled on the pipeline and then locked with the locking bolts to achieve an anti-slip connection between the pressure cover and the pipeline; a locking block 74 is provided on the inner side of each half-pressure cover 73 to improve the anti-slip performance of the connection with the pipeline. The locking block 74 can be pressed against or embedded in the half-pressure cover 73, or it can be connected integrally with the half-pressure cover 73. Each half pressure cover 73 is detachably fixedly connected to the repair box 10 (that is, detachably connected to the corresponding half box body). The specific detachable fixed connection structure can be a conventional structure, such as a detachable connection achieved by bolt connection. In this embodiment, the outer wall of the first half box body 11 is fixedly connected or integrally connected with a first half ring body 75 at a position corresponding to each first semicircular groove 17, and the outer wall of the second half box body 12 is fixedly connected or integrally connected with a second half ring body 76 that matches each first half ring body 75 one-to-one. The first half ring body 75 and the second half ring body 76 that match each other together constitute a flange ring, and the inner hole of the flange ring is coaxially arranged with the corresponding through hole. The each half pressure cover 73 of the pipeline anti-detachment assembly is indirectly fixedly connected to the repair box 10 by being fixedly connected to the corresponding flange ring.

[0104] Preferably, in order to improve the scope of application of the pipeline repair equipment, a reducer is detachably fixedly connected between the repair box 10 and the pipeline anti-slip assembly. The reducer includes two half-seat bodies 77 that are detachably fixedly connected to each other. The connection structure between the two half-seat bodies 77 and the connection structure with the pipeline are the same as the two half-pressure covers 73, and will not be repeated here. A reducer hole for inserting the pipeline is formed between the two half-seat bodies 77. The diameters of the mouths at both ends of the reducer hole are different from each other. The aperture of the reducer hole gradually decreases from one end relatively close to the repair box 10 to the other end. In this way, even if the diameter of the pipeline is smaller than the diameter of the through hole, it can be connected to the repair box 10 by setting a reducer. Of course, different reducers need to be selected for different pipe diameters.

[0105] The two half-seat bodies 77 are provided with a reducing sealing strip at the positions on both sides of the reducing hole to achieve a seal between the two half-seat bodies 77. In addition, a sealing structure also needs to be provided at both ends of the reducing seat. Specifically, the inner side wall of the inner hole of the flange ring has a box end tapered surface, and the inner sides of the first half ring body 75 and the second half ring body 76 are respectively provided with a box end semi-sealing ring that presses against the box end tapered surface. The two box end semi-sealing rings abut against each other and jointly form a box end sealing ring for being mounted on the pipeline, and one end of the reducing seat is pressed against the end of the box end sealing ring away from the repair box; the side wall of the mouth of the end of the reducing hole away from the repair box 10 has a pipe end tapered surface, and the inner sides of each half seat body 77 are respectively provided with a pipe end semi-sealing ring 79 that abuts against the pipe end tapered surface, and the two pipe end semi-sealing rings 79 abut against each other and jointly form a pipe end sealing ring for being mounted on the pipeline, and one end of the pressure cover is pressed against the end of the pipe end sealing ring away from the repair box 10. When in use, after inserting the pipe into the repair box 10, it is necessary to first install the reducer on the pipe, and then install the pressure cover. In this way, the fastening force between the pressure cover and the pipe can be used to ensure that the box end sealing ring and the pipe end sealing ring are compressed, thereby ensuring the sealing effect.

[0106] The saw module 30 includes a cutting cover plate 31 for sealing the operating window and fixedly connected to the second half of the housing 21, a telescopic cutting cylinder 32 mounted on the cutting cover plate 31, a cutting support plate 33 fixedly connected to the piston rod of the telescopic cutting cylinder 32, and an automatic cutting device 60 mounted on the cutting support plate 33. The cutting cover plate 31 can be removably fixedly connected to the second half of the housing 21 by bolts, and a sealing ring is provided between the two to ensure a sealing effect after connection. It should be noted that since the piston rod of the telescopic cutting cylinder 32 needs to pass through the cutting cover plate 31, a small amount of water may overflow during use. This overflow water can usually be ignored. Of course, if necessary, a sealing ring can also be provided between the piston rod of the telescopic cutting cylinder 32 and the cutting cover plate 31.

[0107] The number of automatic cutting devices 60 installed on the cutting support plate 33 can be determined according to actual needs. At least one can be set, or multiple cutting support plates 33 can be set. Each cutting support plate 33 is equipped with an automatic cutting device 60. Whether more than two automatic cutting devices 60 are installed on one cutting support plate 33, or multiple cutting support plates 33 are set, the total number of automatic cutting devices is usually 2-4. In this embodiment, two cutting support plates 33 are used as an example for explanation. Each cutting support plate 33 is equipped with an automatic cutting device 60, so there are two automatic cutting devices 60, which can cut both sides of the leaking position of the pipeline at the same time, and the repair efficiency is relatively high.

[0108] The automatic cutting device 60 includes a slide rail 61 fixedly connected to the cutting support plate 33, a slide seat 62 slidably connected to the slide rail 61, a sliding motor 63 for driving the slide seat 62 to slide, and a transmission box 64 fixedly connected to the slide seat 62 ( Figure 4 The structure of the transmission box 64 is partially omitted to illustrate the internal structure), a worm gear 65 rotatably connected to the transmission box 64, a reciprocating rod 66 slidably connected to the transmission box 64, a saw blade 67 detachably connected to the reciprocating rod 66, a cutting motor 68 mounted on the transmission box 64, and a worm 69 transmission-connected to the output shaft of the cutting motor 68. The sliding motor 63 is transmission-connected to the slide 62 via a conventional screw assembly. The worm 69 is meshed with the worm gear 65. A transmission pin 34 is fixedly connected to the side of the worm gear 65 and is arranged offset from the axis of the worm gear 65. The reciprocating rod 66 is provided with a slide groove 35 arranged perpendicular to the reciprocating rod 66. The transmission pin 34 slides through the slide groove 35. In this way, the worm gear 65 and the reciprocating rod 66 form a crank slider mechanism, which drives the saw blade 67 to reciprocate, and cooperates with the sliding motor 63 to drive the movement of the slide 62 to achieve cutting of the pipe.

[0109] In order to ensure that the saw blade 67 can better cut the pipe, preferably, in this embodiment, a support rod 36 is fixedly connected to the transmission box 64, and one end of the support rod 36 is rotatably connected to a roller 37 that rests on the back of the saw blade 67 to support the saw blade 67, so that the saw blade 67 is not easily broken during the cutting process.

[0110] The manipulator module 40 can adopt a multi-joint manipulator directly purchased from the market. Preferably, in this embodiment, the manipulator module 40 includes a clamping cover plate 41 for sealing the operation window and fixedly connected to the second half box body 12, a clamping telescopic cylinder 42 mounted on the clamping cover plate 41, and a telescopic clamping device fixedly connected to the piston rod of the clamping telescopic cylinder 42, wherein the structure of the clamping cover plate 41 and the connection method between it and the second half box body 12 are the same as those of the cutting cover plate 31. The telescopic clamping device includes a movable plate 45 fixedly connected to the piston rod of the clamping telescopic cylinder 42, a clamping seat 43 fixedly connected to the movable plate 45, and a clamping assembly 44 mounted on the clamping seat 43, the clamping assembly 44 includes two mutually cooperating clamping jaws and a clamping cylinder 46 for driving the two clamping jaws to rotate toward or away from each other. The structure of this type of clamping assembly 44 is widely used in various clamping mechanisms and will not be described in detail here. It should be noted that, in order to simplify the structure of the manipulator module 40 located in the repair box 10, in this embodiment, the cylinder body of the clamping cylinder 46 is fixedly connected to the clamping cover 41, and the telescopic stroke of the clamping cylinder 46 is greater than that of the clamping telescopic cylinder 42. When the clamping telescopic cylinder 42 performs the telescopic action, the clamping cylinder 46 performs the telescopic action synchronously. When the clamping cylinder 46 performs the clamping or loosening action of the clamping claw, the clamping telescopic cylinder 42 does not move (if the clamping telescopic cylinder 42 moves at this time, it will affect the action of the clamping claw). In addition, since the piston rods of the clamping telescopic cylinder 42 and the clamping cylinder 46 need to pass through the clamping cover 41, a small amount of water may overflow during use. This overflow water can usually be ignored. Of course, if necessary, a sealing ring can also be provided between the piston rods of the clamping telescopic cylinder 42 and the clamping cylinder 46 and the clamping cover 41.

[0111] Preferably, there can be more than two clamping assemblies 44. When there are more than two clamping assemblies 44, the clamping assemblies 44 are arranged in a straight line to better clamp the relatively long telescoping member. Each clamping assembly 44 can be independently provided with a clamping cylinder 46, or can share the same clamping cylinder 46.

[0112] Preferably, drainage holes are provided on the first half box body 11, the second half box body 12, the cutting cover plate 31 and / or the clamping cover plate 41, and drainage valves 71 are installed on the drainage holes to enable drainage or exhaust operations when necessary.

[0113] The pushing device 50 is fixedly connected to the telescopic clamping device 40 or arranged independently of the telescopic clamping device 50, and is used to press the telescopic device to be installed onto the leaking pipe. In this embodiment, there are two pushing devices 50, which are fixedly connected one-to-one to the two clamping claws of one of the clamping assemblies 44. The pushing device 50 includes a non-one-way hydraulic cylinder 51 and a pushing block 52 fixedly connected to each piston rod of the non-one-way hydraulic cylinder 51. The non-one-way hydraulic cylinder 51 can be a two-way hydraulic cylinder with two piston rods or a multi-directional hydraulic cylinder with multiple piston rods. The specific type needs to be determined according to the position of the leaking pipe section to be cut or the port and position of the telescopic device. In this embodiment, a two-way hydraulic cylinder is used as an example for explanation. When in use, the pushing block 52 is pressed against the connecting joint or connecting flange at the end of the telescopic device. When in use, the two pushing blocks 52 are pushed out in back to back, so that the pipe passes through the telescopic device to achieve sealing.

[0114] The method of using the pipeline repair device provided in this embodiment can be found in the pipeline repair method provided in this embodiment, which will not be repeated here.

[0115] Example 2.

[0116] like Figure 6 As shown, this embodiment provides a pipeline repair device. The difference between this device and the first embodiment is that the second half box body 12 includes a valve shell 81 and a box body 82 that are detachably fixed to each other by bolts, and the gate valve 20 is installed on the valve shell 81. In this way, the valve shell 81 and the gate valve 20 can be assembled and produced as a whole, which is more convenient to produce. It is even possible to directly purchase an existing gate valve on the market and use the shell of the purchased gate valve as the valve shell 81.

[0117] The present invention is described in detail above with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the above embodiments. Those skilled in the art can make various equivalent substitutions to the present invention based on the existing technology. For example, the cylinder in the above embodiment can be replaced by a hydraulic cylinder (such as an oil cylinder) or a push rod motor, etc., which all fall within the scope of protection of the present invention.

Claims

1. A pipeline repair device, characterized in that: include: A repair box, the repair box comprising a first half box body and a second half box body that are detachably fixedly connected to each other, the first half box body having at least two first semicircular grooves on a side facing the second half box body, the second half box body having second semicircular grooves on a side facing the first half box body that respectively cooperate with each of the first semicircular grooves on a one-to-one basis, a through hole for inserting a pipe is formed between the mutually cooperating first semicircular grooves and the second semicircular grooves, and an operation window is provided on a side wall of the second half box body; A gate valve, mounted on the second half of the box body, for separating the inner cavity of the repair box into a repair chamber and an operating chamber that are independent of each other; a cutting saw module, the cutting saw module comprising a cutting cover plate for sealing the operating window and fixedly connected to the second half of the housing, a cutting telescopic cylinder mounted on the cutting cover plate, a cutting support plate fixedly connected to the piston rod of the cutting telescopic cylinder, and an automatic cutting device mounted on the cutting support plate; A manipulator module, the manipulator module comprising a clamping cover plate for sealing the operating window and fixedly connected to the second half-box, a clamping telescopic cylinder mounted on the clamping cover plate, and a telescopic clamping device fixedly connected to the piston rod of the clamping telescopic cylinder; and A pushing device, the pushing device is fixedly connected to the telescopic clamping device or arranged independently of the telescopic clamping device, and is used to press the expansion joint to be installed onto the leaking pipe; The automatic cutting device includes a slide rail fixedly connected to the cutting support plate, a slide seat slidably connected to the slide rail, a sliding motor for driving the slide seat to slide, a transmission box fixedly connected to the slide seat, a worm gear rotatably connected to the transmission box, a reciprocating rod slidably connected to the transmission box, a saw blade detachably connected to the reciprocating rod, a cutting motor mounted on the transmission box, and a worm gear transmission-connected to the output shaft of the cutting motor, the worm gear is meshedly connected to the worm gear, a transmission pin which is staggered with the axis of the worm gear is fixedly connected to the side surface of the worm gear, a slide groove is provided on the reciprocating rod, and the transmission pin is slidably inserted into the slide groove; The telescopic clamping device includes a movable plate fixedly connected to the piston rod of the telescopic clamping cylinder, a clamping seat fixedly connected to the movable plate, and a clamping assembly mounted on the clamping seat, wherein the clamping assembly includes two mutually cooperating clamping jaws and a clamping cylinder for driving the two clamping jaws to rotate toward or away from each other; The pushing device includes a non-one-way hydraulic cylinder and pushing blocks respectively fixedly connected to the piston rods of the non-one-way hydraulic cylinder.

2. The pipeline repair device according to claim 1, characterized in that: A box sealing strip is provided between the first half box and the second half box, and a pipe sealing strip is provided at the bottom of each of the first semicircular grooves and each of the second semicircular grooves.

3. The pipeline repairing device according to claim 1, characterized in that: The outer side wall of the first half box body is fixedly connected or integrally connected with a first ear plate at a position close to the second half box body, and a first locking hole is provided on the first ear plate. The outer side wall of the second half box body is fixedly connected or integrally connected with a second ear plate that cooperates with the first ear plate, and a second locking hole that cooperates with the first locking hole is provided on the second ear plate. The same connecting bolt is inserted through the mutually cooperating first locking hole and second locking hole.

4. The pipeline repairing device according to claim 1, characterized in that: An observation window is provided on the first half box body and / or the second half box body, and a transparent plate is sealed on the observation window.

5. The pipeline repairing device according to claim 1, characterized in that: The outer side wall of the repair box is detachably and fixedly connected with a pipeline anti-drop assembly at a position corresponding to each through hole.

6. The pipeline repairing device according to claim 5, characterized in that: The pipeline anti-detachment assembly includes two half-covers that are detachably fixed to each other by locking bolts. The two half-covers together form a cover for clamping the pipeline. A locking block is provided on the inner side of each half-cover, and each half-cover is detachably fixed to the repair box. The locking bolts are arranged perpendicular to the inner hole of the cover.

7. The pipeline repairing device according to claim 6, characterized in that: The outer side wall of the first half box body is fixedly connected or integrally connected with a first half ring body at a position corresponding to each of the first semicircular grooves, and the outer side wall of the second half box body is fixedly connected or integrally connected with a second half ring body that matches each of the first half ring bodies one-to-one. The first half ring body and the second half ring body that match each other together form a flange ring, and the inner hole of the flange ring is coaxially arranged with the corresponding through hole. The pipeline anti-detachment component is indirectly fixedly connected to the repair box by being fixedly connected to the corresponding flange ring.

8. The pipeline repairing device according to claim 7, characterized in that: The inner side wall of the inner hole of the flange ring has a box end tapered surface, and the inner sides of the first half ring body and the second half ring body are respectively provided with a box end semi-sealing ring that abuts against the box end tapered surface. The two box end semi-sealing rings abut against each other and together form a box end sealing ring for being sleeved on the pipeline; A reducing seat is detachably fixedly connected between the repair box and the pipe anti-slip assembly. The reducing seat comprises two half-seat bodies detachably fixedly connected to each other. A reducing hole for inserting a pipe is formed between the two half-seat bodies, and reducing sealing strips are respectively provided between the two half-seat bodies at positions on both sides of the reducing hole. One end of the reducing seat is pressed tightly against the end of the box end sealing ring away from the repair box. The diameters of the mouths at both ends of the reducing hole are different, and the side wall of the mouth of the reducing hole at the end away from the repair box has a pipe end tapered surface, and the inner side of each half seat is respectively provided with a pipe end semi-sealing ring that abuts against the pipe end tapered surface. The two pipe end semi-sealing rings abut against each other and jointly form a pipe end sealing ring for being mounted on the pipeline, and one end of the pressure cover is pressed tightly against the end of the pipe end sealing ring away from the repair box.

9. The pipeline repairing device according to claim 1, characterized in that: A through groove is provided on the outer side wall of the second half box body, and the gate valve includes a support fixedly connected to the outer side wall of the second half box body, a baffle slidably connected to the through groove, a screw rotatably connected to the support, and a handwheel or motor for driving the screw to rotate. The screw is spirally connected to the baffle, and the screw and the baffle are located in the same plane or are arranged parallel to each other. When the baffle slides to the extreme position in the direction away from the second half box body, the end of one end of the baffle is located in the through groove.

10. The pipeline repairing device according to claim 1, characterized in that: The transmission box is also fixedly connected to a support rod, and one end of the support rod is rotatably connected to a roller that presses against the blade back of the saw.

11. The pipeline repairing device according to claim 1, characterized in that: There are 2-4 automatic cutting devices.

12. The pipeline repairing device according to claim 1, characterized in that: There are more than two clamping assemblies, and the clamping assemblies are arranged in a straight line.

13. The pipeline repairing device according to any one of claims 1 to 12, characterized in that: The first half box body, the second half box body, the cutting cover plate and / or the clamping cover plate are provided with drainage holes, and drainage valves are installed on the drainage holes.

14. The pipeline repairing device according to any one of claims 1 to 12, characterized in that: A waterproof camera is arranged in the repair box.

15. The pipeline repairing device according to any one of claims 1 to 12, characterized in that: The second half box body comprises a valve housing and a box body which are detachably fixedly connected to each other, and the gate valve is mounted on the valve housing.

16. A pipeline repair method, characterized in that: Repairing the pipeline using the pipeline repair device according to claim 1 includes the following steps: S1. Sealing the box, determining the leaking pipe and the location of the leak, and sealingly and securely connecting the repair box to the leaking pipe. The repair box is provided with a gate valve, which, when closed, separates the inner cavity of the repair box into a repair chamber and an operating chamber, wherein the leaking location is located in the repair chamber. S2, sealing the water, closing the gate valve, installing an automatic cutting device in the operating room, and sealing the operating room; S3, cutting the pipe: opening the gate valve to connect the repair chamber and the operating chamber, extending the automatic cutting device into the repair chamber to cut off the leaking pipe section, and then resetting the automatic cutting device; S4. Replace the pipe, close the gate valve, remove the automatic cutting device from the operating room, and install a telescopic clamping device in the operating room. The telescopic clamping device clamps a telescope, and the telescope is installed with a pushing device. Then, seal the operating room. S5. Repairing: Open the gate valve to connect the repair chamber and the operating chamber, use the telescopic clamping device to move the expander to the position corresponding to the leaking pipe, and then use the pushing device to extend the expander so that each end of the expander is sealed and connected to the leaking pipe; S6. Fix the connection, drain the water in the repair box, then remove the repair box from the leaking pipe, fix each end of the expansion joint to the leaking pipe, and remove the pushing device from the expansion joint to complete the pipe repair.

17. The pipeline repair method according to claim 16, characterized in that: The leaking pipe is a straight pipe section, a three-way pipe or a four-way pipe.

18. The pipeline repair method according to claim 16, characterized in that: When the gate valve is opened, the operating room is exhausted.

19. The pipeline repair method according to claim 16, wherein: In step S4, after the telescopic clamping device is installed in the operating room, the operating room is first sealed, the gate valve is opened to connect the repair room and the operating room, the leaking pipe section is picked up into the operating room using the telescopic clamping device, and then the gate valve is closed, and the leaking pipe section is taken out of the operating room, and then the telescopic device is clamped on the telescopic clamping device.

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