Water supply pipeline pressure tapping operation device

Abstract

The utility model discloses a pressure tapping operation device for a water supply pipeline, and relates to the technical field of water supply pipeline construction. Comprising a short pipe connected with a water supply pipeline and provided with a flange, the short pipe is connected with an on-off valve through the flange, and one side, opposite to the short pipe, of the on-off valve is connected with a trepanning operation cavity pipe through the flange; the laser generator is used for carrying out trepanning operation and comprises a laser device used for generating laser beams and a cutting head used for carrying out laser cutting, the laser device is arranged outside the trepanning operation cavity tube, and the cutting head is arranged inside the trepanning operation cavity tube; an annular movement driving track structure for driving the cutting head to move along the annular track and a pipe wall removing mechanism for taking down and removing the pipe wall cut from the water supply pipe are arranged in the trepanning operation cavity pipe; the cutting head forms an annular cutting seam in the water supply pipeline while moving along the track of the annular track along with the annular moving driving track structure.

Description

Technical Field

[0001] This utility model relates to the field of water supply pipeline construction technology, and in particular to a pressurized tapping device for water supply pipelines. Background Technology

[0002] Live tapping is a safe, environmentally friendly, economical, and efficient in-service pipeline maintenance and repair technology. It is applicable to the normal maintenance and renovation of pipelines carrying various media such as water, crude oil, refined oil, chemical media, and natural gas, as well as emergency repairs for sudden accidents (such as live tapping, replacement of corroded pipe sections, installation of equipment, and distribution modification).

[0003] Currently, some engineering pipelines with large opening diameters involve many processes, have high requirements for the quality of pipeline joint welding, and require a high level of expertise in live pipeline tapping. Conventional tapping machines use large-diameter tapping cutters, which makes stability control during tapping operations extremely difficult, easily causing pipeline vibration. Furthermore, the opening cut is large and the cut seam at the tapping site is extremely irregular, which will increase the workload of subsequent grinding of the cut seam, making live tapping operations for water supply pipelines extremely difficult.

[0004] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a pressurized tapping device for water supply pipelines. Utility Model Content

[0005] The purpose of this invention is to provide a device for quickly and stably performing pressurized tapping of water supply pipes, avoiding problems such as pipe vibration, and making the cut seam uniform to reduce subsequent grinding work, thereby reducing workload and improving tapping quality and stability.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a pressurized tapping device for water supply pipelines, comprising a short pipe connected to the water supply pipeline and having a flange, wherein the short pipe is connected to an on / off valve via the flange, and the on / off valve is connected to a tapping chamber via a flange on the side opposite to the short pipe.

[0008] It also includes a laser generator for performing hole-making operations, the laser generator comprising a laser for generating a laser beam and a cutting head for performing laser cutting, the laser being disposed outside the hole-making cavity and the cutting head being disposed inside the hole-making cavity;

[0009] The opening operation chamber is equipped with a ring-shaped moving drive track structure that drives the cutting head to move along a ring-shaped track, and a pipe wall removal mechanism that removes the pipe wall cut off from the water supply pipe.

[0010] As the cutting head moves along the circular track with the circular moving drive track structure, it forms a circular cutting slit in the water supply pipe.

[0011] Furthermore, the annular moving drive track structure includes an inner ring rail encircling the inner wall of the opening working chamber tube and an inner turntable disposed inside the inner ring rail and rotating coaxially with the inner ring rail. A rotation drive mechanism is provided between the inner turntable and the inner ring rail. The inner ring rail is located on the opening working chamber tube at one end near the opening and closing valve.

[0012] Furthermore, the cutting head is fixedly mounted on the inner surface of the inner turntable.

[0013] Furthermore, a camera is installed on the cutting head.

[0014] Furthermore, an inner annular groove is provided on the inner side of the inner ring rail, allowing the inner turntable to extend into it so that the inner turntable can rotate coaxially relative to the inner ring rail within the inner annular groove.

[0015] Furthermore, the rotation drive mechanism includes an outer annular groove, which is formed on the outer circumferential surface of the inner turntable. Multiple V-shaped pulleys are evenly distributed circumferentially within the outer annular groove. Each V-shaped pulley has a V-shaped groove on its outer side. An annular guide protrusion is provided on the inner side of the inner annular groove. The annular guide protrusion corresponds to the V-shaped groove of the V-shaped pulley and is used to guide and support the rolling of the V-shaped pulley.

[0016] Furthermore, the pipe wall removal mechanism includes a steel telescopic rod disposed within the opening working chamber. The steel telescopic rod includes a main rod and a secondary support rod. One end of the main rod has a hollow inner cavity for the secondary support rod to extend into. The end of the secondary support rod located outside the hollow inner cavity is fixedly connected to the inside of the opening working chamber. The secondary support rod slides within the hollow inner cavity of the main rod. The end of the main rod opposite to the secondary support rod is provided with a pipe wall adsorption mechanism for adsorbing and fixing the pipe wall cut off from the water supply pipe.

[0017] The opening working chamber is equipped with a telescopic drive mechanism to drive the main rod to move axially along the opening working chamber and to make the auxiliary support rod slide within the hollow cavity of the main rod.

[0018] Furthermore, the tube wall adsorption mechanism includes an electromagnetic chuck, which is fixedly mounted on the main rod.

[0019] Furthermore, the telescopic drive mechanism includes:

[0020] A threaded rod is rotatably mounted on the inner wall of the opening working chamber tube via a bearing, and the threaded rod is arranged axially along the opening working chamber tube.

[0021] A nut assembly, which is fitted onto the threaded rod and threadedly engaged with the threaded rod;

[0022] A connecting bracket, which connects the outer surface of the nut assembly to the outer surface of the main rod, the connecting bracket being located at one end of the main rod opposite to the tube wall adsorption mechanism; and

[0023] The first support roller is disposed on the inner wall of the opening working chamber tube to provide rolling support for the main rod. The first support roller consists of multiple rollers arranged side by side, and is disposed on the end of the opening working chamber tube near the opening and closing valve.

[0024] Furthermore, multiple second support rollers are arranged side by side inside the opening operation chamber on the opposite side of the first support roller, and the second support rollers roll on the outer surface of the main rod.

[0025] In the above technical solution, the pressurized tapping device for water supply pipelines provided by this utility model has the following beneficial effects:

[0026] This invention enables rapid and stable hot tapping of water supply pipes using a laser generator, avoiding problems such as pipe vibration and ensuring a regular cut to reduce subsequent grinding work, thus alleviating workload and improving tapping quality and stability. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0028] Figure 1 A schematic diagram of a pressurized tapping device for water supply pipelines provided in this embodiment of the present utility model;

[0029] Figure 2 A side view of a pressurized tapping device for water supply pipelines provided in an embodiment of this utility model;

[0030] Figure 3 A schematic diagram of the inner ring rail of a pressurized tapping device for water supply pipelines provided in this embodiment of the present invention;

[0031] Figure 4A schematic diagram of the inner turntable of a pressurized tapping device for water supply pipelines provided in this embodiment of the present invention;

[0032] Figure 5 A pressurized tapping device for water supply pipelines is provided as an embodiment of this utility model. Figure 1 A magnified view of A in the middle.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Short tube; 2. Laser; 3. Hole-opening working cavity tube; 4. Laser; 5. Cutting head; 6. Inner ring rail; 7. Inner turntable; 8. Camera; 9. Inner annular groove; 10. Outer annular groove; 11. V-shaped pulley; 12. Annular guide protrusion; 13. Main rod; 14. Secondary support rod; 15. Hollow inner cavity; 16. Electromagnetic chuck; 17. Threaded rod; 18. Nut pair; 19. Connecting frame; 20. First support roller; 21. Second support roller. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0036] See Figures 1 to 5 As shown;

[0037] This embodiment discloses a pressurized tapping device for water supply pipelines, including a short pipe 1 connected to the water supply pipeline and having a flange. The short pipe 1 is welded to the water supply pipeline. The short pipe 1 is connected to an on-off valve 2 through the flange. The on-off valve 2 is connected to a tapping chamber 3 through the flange on the side opposite to the short pipe 1. When the on-off valve 2 is closed, the tapping chamber 3 is connected and the pressurized tapping operation begins. When the tapping operation is performed, the on-off valve 2 is opened.

[0038] It also includes a laser generator for performing hole-making operations. The laser generator includes a laser 4 for generating a laser beam and a cutting head 5 for performing laser cutting. The laser 4 is located outside the hole-making cavity 3, and the cutting head 5 is located inside the hole-making cavity 3. The laser beam generated by the laser 4 is focused on the hole-making part of the water supply pipe by the cutting head 5 for cutting. The cutting kerf is smaller than that of the hole-making knife in the prior art, and the edge of the cutting kerf is more regular, reducing the need for subsequent grinding and other work. The laser generator is prior art, and its more specific details will not be elaborated here.

[0039] The opening operation chamber 3 is equipped with a ring-shaped moving drive track structure that drives the cutting head 5 to move along a ring-shaped track, and a pipe wall removal mechanism that removes the pipe wall cut off from the water supply pipe.

[0040] While the cutting head 5 moves along the circular track with the circular moving drive track structure, it forms a circular cutting slit on the water supply pipe. The inner part of the circular cutting slit is the pipe wall cut off from the water supply pipe. Before cutting, the pipe wall can be connected to the pipe wall at the position to be cut through the pipe wall removal mechanism. After cutting, the pipe wall is fixed on the pipe wall removal mechanism, and the cut pipe wall is removed through the pipe wall removal mechanism, bringing out the short pipe 1 and the on / off valve 2. Then the on / off valve 2 is closed, and the opening operation chamber pipe 3 is removed to complete the opening operation.

[0041] Furthermore, the annular moving drive track structure includes an inner ring rail 6 encircling the inner wall of the opening working chamber tube 3 and an inner turntable 7 arranged inside the inner ring rail 6 and rotating coaxially with the inner ring rail 6. A rotation drive mechanism is provided between the inner turntable 7 and the inner ring rail 6. The inner ring rail 6 is located at one end of the opening working chamber tube 3 near the opening and closing valve 2. The rotation drive mechanism is used to support and drive the inner turntable 7 to rotate coaxially inside the inner ring rail 6.

[0042] Furthermore, the cutting head 5 is fixedly mounted on the inner surface of the inner turntable 7 so that during the rotation of the inner turntable 7, the cutting head 5 is synchronously rotated into a ring shape to cut a ring-shaped cutting seam into the pipe.

[0043] Furthermore, a camera 8 is installed on the cutting head 5 to capture the actual scene of the cutting head 5 cutting the pipe, so as to control the cutting process and make the hole opening operation more intuitive to be observed. The camera 8, its image transmission and visualization are conventional operations in the prior art and will not be described in detail.

[0044] Furthermore, an inner annular groove 9 is provided on the inner side of the inner ring rail 6 so that the inner turntable 7 can extend into it, allowing the inner turntable 7 to rotate coaxially with the inner ring rail 6 within the inner annular groove 9. The inner annular groove 9 is used to install the inner turntable 7.

[0045] Furthermore, the rotation drive mechanism includes an outer annular groove 10, which is formed on the outer circumferential surface of the inner turntable 7. Multiple V-shaped pulleys 11 are evenly distributed circumferentially inside the outer annular groove 10. The V-shaped pulleys 11 are pulleys with V-shaped grooves on the outer side. An annular guide protrusion 12 is provided on the inner side of the inner annular groove 9. The annular guide protrusion 12 corresponds to the V-shaped groove of the V-shaped pulley 11 and is used to guide and support the rolling of the V-shaped pulley 11.

[0046] Specifically, multiple V-shaped pulleys 11 on the outer circumferential surface of the inner turntable 7 roll on the annular guide protrusions 12 within the inner annular groove 9. All V-shaped pulleys 11 roll tightly against the annular guide protrusions 12 to support the inner turntable 7's coaxial rotation relative to the inner annular rail 6 and ensure the rotational stability of the inner turntable 7. Furthermore, the mutually embedded limiting structure between the V-shaped grooves of the V-shaped pulleys 11 and the annular guide protrusions 12 prevents axial movement of the inner turntable 7 relative to the inner annular rail 6, thus ensuring the rotational stability of the inner turntable 7. Among the multiple V-shaped pulleys 11, one set can be driven by a motor to generate a driving force for the rotation of the inner turntable 7, such as... Figure 4 As shown.

[0047] Furthermore, the pipe wall removal mechanism includes a steel telescopic rod disposed inside the opening working chamber 3. The steel telescopic rod includes a main rod 13 and a secondary support rod 14. One end of the main rod 13 is provided with a hollow inner cavity 15 for the secondary support rod 14 to extend into. One end of the secondary support rod 14 located outside the hollow inner cavity 15 is fixedly connected to the inside of the opening working chamber 3. The secondary support rod 14 slides within the hollow inner cavity 15 of the main rod 13. The end of the main rod 13 opposite to the secondary support rod 14 is provided with a pipe wall adsorption mechanism for adsorbing and fixing it to the pipe wall cut off from the water supply pipe.

[0048] The opening working chamber 3 is equipped with a telescopic drive mechanism to drive the main rod 13 to move axially along the opening working chamber 3 and make the auxiliary support rod 14 slide in the hollow inner cavity 15 of the main rod 13.

[0049] Specifically, during the use of this device, before activating the laser generator for cutting, the main rod 13 can be driven to move axially along the opening working chamber 3 via the telescopic drive mechanism, and the pipe wall adsorption mechanism can be adsorbed and fixed on the pipe wall to be cut on the water supply pipe. After cutting is completed, the main rod 13 can be driven to move in the opposite direction via the telescopic drive mechanism to remove the cut pipe wall. During this process, the auxiliary support rod 14 slides within the hollow inner cavity 15 of the main rod 13, guiding the movement of the main rod 13 and ensuring the stability of the main rod 13's movement direction.

[0050] Furthermore, the pipe wall adsorption mechanism includes an electromagnetic chuck 16, which is fixedly mounted on the main rod 13. When the electromagnetic chuck 16 is energized, it can adsorb onto the pipe wall and remove the cut pipe wall. After removal, de-energizing the electromagnetic chuck 16 will remove the pipe wall from the electromagnetic chuck 16.

[0051] Furthermore, the telescopic drive mechanism includes:

[0052] A threaded rod 17 is rotatably mounted on the inner wall of the opening working chamber 3 via a bearing, and the threaded rod 17 is arranged axially along the opening working chamber 3.

[0053] Nut assembly 18 is sleeved on threaded rod 17 and threadedly engaged with threaded rod 17.

[0054] Connecting bracket 19, which connects the outer surface of nut pair 18 and the outer surface of main rod 13, is located at one end of main rod 13 opposite to the tube wall adsorption mechanism; and

[0055] The first support roller 20 is set on the inner wall of the opening working chamber tube 3 to provide rolling support for the main rod 13. The first support roller 20 consists of multiple rollers arranged side by side. The first support roller 20 is set on the end of the opening working chamber tube 3 near the opening and closing valve 2.

[0056] Specifically, one end of the threaded rod 17 extends out of the opening working chamber tube 3 and is driven to rotate by a drive motor. Since the opening working chamber tube 3 is in a closed state during operation, a dynamic seal is formed at the point where the threaded rod 17 extends out of the opening working chamber tube 3 through a dynamic sealing ring or similar structure to ensure the closed state of the opening working chamber tube 3 during operation. During the rotation of the threaded rod 17, because the nut assembly 18 is connected to the main rod 13 via the connecting frame 19, the nut assembly 18 cannot rotate. When the threaded rod 17 rotates, the threaded engagement between the nut assembly 18 and the threaded rod 17 causes the nut assembly 18 to move circumferentially along the threaded rod 17. This movement, in turn, drives the main rod 13 to move synchronously via the connecting frame 19, thereby moving the electromagnetic chuck 16. Furthermore, because the end of the main rod 13 moves along the pipe wall via the electromagnetic chuck 16, the end of the main rod 13 experiences significant gravity. To maintain the stability of the main rod 13, it is supported by a first support roller 20 on the lower layer of the opposite end of the electromagnetic chuck 16, thus maintaining stability through leverage. Simultaneously, the secondary support rod 14 slides within the hollow cavity 15 of the main rod 13, also serving as a guide for the movement of the main rod 13. Figure 1 The diagram only illustrates the balanced support of the main rod 13 under load on one side. In other states, in order to ensure the stability of the main rod 13, the arrangement of the first support rollers 20 can be adjusted according to the actual situation, such as changes in the direction of force on the main rod 13.

[0057] Furthermore, within the perforation chamber 3, multiple parallel second support rollers 21 are arranged on the opposite side of the first support roller 20, and the second support rollers 21 roll on the outer surface of the main rod 13. This means that the two opposite sides of the main rod 13 are respectively supported by the first support roller 20 and the second support roller 21, stabilizing the axial movement of the main rod 13 without affecting its axial movement, thus stably driving the movement of the cut pipe wall.

[0058] In the above technical solution, the pressurized tapping device for water supply pipelines provided by this utility model has the following beneficial effects:

[0059] This invention enables rapid and stable hot tapping of water supply pipes using a laser generator, avoiding problems such as pipe vibration and ensuring a regular cut to reduce subsequent grinding work, thus alleviating workload and improving tapping quality and stability.

[0060] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for pressurized tapping of water supply pipelines, characterized in that, Includes a short pipe (1) connected to a water supply pipe and having a flange, the short pipe (1) being connected to an on / off valve (2) via a flange, the on / off valve (2) being connected to an open working chamber pipe (3) via a flange on the side opposite to the short pipe (1); It also includes a laser generator for performing hole-making operations, the laser generator including a laser (4) for generating a laser beam and a cutting head (5) for performing laser cutting, the laser (4) being disposed outside the hole-making cavity (3) and the cutting head (5) being disposed inside the hole-making cavity (3); The opening operation chamber (3) is equipped with a ring moving drive track structure that drives the cutting head (5) to move along a ring track, and a pipe wall removal mechanism that removes the pipe wall cut off from the water supply pipe. The cutting head (5) forms a circular cutting slit in the water supply pipe while moving along the circular track structure with the circular moving drive.

2. The pressurized tapping device for water supply pipelines according to claim 1, characterized in that, The annular moving drive track structure includes an inner ring rail (6) encircling the inner wall of the opening working chamber tube (3) and an inner turntable (7) arranged inside the inner ring rail (6) and rotating coaxially with the inner ring rail (6). A rotation drive mechanism is provided between the inner turntable (7) and the inner ring rail (6). The inner ring rail (6) is located on the opening working chamber tube (3) at one end near the opening and closing valve (2).

3. The pressurized tapping device for water supply pipelines according to claim 2, characterized in that, The cutting head (5) is fixedly disposed on the inner surface of the inner turntable (7).

4. The pressurized tapping device for water supply pipelines according to claim 2, characterized in that, A camera (8) is installed on the cutting head (5).

5. A pressurized tapping device for water supply pipelines according to claim 2, characterized in that, The inner ring rail (6) is provided with an inner annular groove (9) into which the inner turntable (7) extends, so that the inner turntable (7) rotates coaxially relative to the inner ring rail (6) within the inner annular groove (9).

6. The pressurized tapping device for water supply pipelines according to claim 5, characterized in that, The rotation drive mechanism includes an outer annular groove (10) which is formed on the outer circumferential surface of the inner turntable (7). A plurality of V-shaped pulleys (11) are evenly distributed in the outer annular groove (10). The V-shaped pulleys (11) are pulleys with V-shaped grooves on the outer side. An annular guide protrusion (12) is provided on the inner side of the inner annular groove (9). The annular guide protrusion (12) corresponds to the V-shaped groove of the V-shaped pulley (11) and is used to guide and support the rolling of the V-shaped pulley (11).

7. The device for pressurized tapping of water supply pipelines according to claim 1, characterized in that, The pipe wall removal mechanism includes a steel telescopic rod disposed in the opening working chamber (3). The steel telescopic rod includes a main rod (13) and a secondary support rod (14). One end of the main rod (13) is provided with a hollow inner cavity (15) for the secondary support rod (14) to extend into. The end of the secondary support rod (14) located outside the hollow inner cavity (15) is fixedly connected to the inside of the opening working chamber (3). The secondary support rod (14) slides in the hollow inner cavity (15) of the main rod (13). The end of the main rod (13) opposite to the secondary support rod (14) is provided with a pipe wall adsorption mechanism for adsorbing and fixing to the pipe wall cut off from the water supply pipe. The opening operation chamber (3) is provided with a telescopic drive mechanism to drive the main rod (13) to move axially along the opening operation chamber (3) and make the auxiliary support rod (14) slide in the hollow inner cavity (15) of the main rod (13).

8. The device for pressurized tapping of water supply pipelines according to claim 7, characterized in that, The tube wall adsorption mechanism includes an electromagnetic chuck (16), which is fixedly mounted on the main rod (13).

9. A pressurized tapping device for water supply pipelines according to claim 7, characterized in that, The telescopic drive mechanism includes: A threaded rod (17) is rotatably mounted on the inner wall of the opening working chamber tube (3) via a bearing, and the threaded rod (17) is axially arranged along the opening working chamber tube (3); Nut pair (18), which is sleeved on the threaded rod (17) and threadedly engaged with the threaded rod (17); A connecting bracket (19) is connected between the outer surface of the nut pair (18) and the outer surface of the main rod (13), the connecting bracket (19) being located at one end of the main rod (13) opposite to the tube wall adsorption mechanism; and The first support roller (20) is disposed on the inner wall of the opening working chamber tube (3) to provide rolling support for the main rod (13). The first support roller (20) consists of multiple rollers arranged side by side. The first support roller (20) is disposed on the opening working chamber tube (3) at one end near the opening and closing valve (2).

10. A pressurized tapping device for water supply pipelines according to claim 9, characterized in that, Multiple second support rollers (21) are arranged side by side in the opening operation chamber (3) on the opposite side of the first support roller (20), and the second support rollers (21) roll on the outer surface of the main rod (13).

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