Pipeline clamping operation device

Abstract

The invention discloses a pipeline clamping operation device which comprises a clamping main body, a sealing assembly, a drill rod assembly, a propelling driving mechanism and an operation execution component, the clamping main body is used for being fixed to a to-be-operated part of a target pipeline, and the sealing assembly is arranged on the attaching face of the clamping main body and the pipeline and the connecting portion of the drill rod assembly. The pipeline clamping operation device is small in size, adapts to the pipe diameter range of DN 50-200 mm, can be rapidly installed and fixed without welding, and is convenient to carry to different operation scenes; the supported hole site range is 6.5-24mm, and by matching with an S = 14 standard sleeve joint and an S = 27 lengthened sleeve joint, different drill bits and external electric tools can be flexibly adapted, drilling, tapping and blocking integrated operation is considered, diversified pipeline maintenance requirements are met, and the problem that traditional equipment cannot realize non-pressure treatment on the blocking side is solved; large-scale corollary equipment is not needed, welding pollution is avoided, the sealing performance is good, and repeated use can be achieved.

Description

Technical Field

[0001] This invention belongs to the technical field of pipeline drilling equipment, specifically relating to a pipeline clamping operation device. Background Technology

[0002] In the installation, maintenance, and renovation of gas, water supply, and drainage pipeline systems, it is often necessary to perform operations such as drilling, tapping, and plugging to achieve branch connections, fault repair, or medium cutoff. Traditional pipeline operation equipment has many limitations: conventional hole drilling machines lack gas pressure relief devices in their manifolds, making it impossible to determine the tightness of pipeline sealing, difficult to release pressure to a depressurized state on the sealed side, and unable to directly purge the pipeline, resulting in insufficient safety and convenience of the operation.

[0003] Existing methods largely rely on large equipment, which is bulky, heavy, inconvenient to carry and install, and often requires welding for fixation. This is not only time-consuming and labor-intensive but also prone to damaging the pipeline itself, resulting in material waste and high labor costs. While some manually operated equipment has a simple structure, it suffers from low operating efficiency, poor drilling accuracy, and inadequate sealing performance, posing a risk of media leakage. On the other hand, equipment relying on external power is often single-function, unable to handle integrated drilling, tapping, and plugging operations, and lacks effective debris collection and pressure monitoring mechanisms, leading to harsh working environments and significant safety hazards. Existing equipment also lacks adaptability to different pipe diameters and borehole diameters, has poor versatility, and cannot meet diverse operational needs. Therefore, we need to provide a pipeline clamping device. Summary of the Invention

[0004] The purpose of this invention is to provide a pipe clamping device that integrates manual and external power drive modes, adapts to different orifice diameter operation requirements, and has pressure monitoring, debris collection, and dual sealing functions. It is also small in size, easy to install, requires no welding, and is reusable. This solves the problems mentioned in the background art, such as conventional orifice opening equipment lacking pressure relief devices, inability to determine the tightness of the seal, inconvenience of venting and purging, large equipment size, cumbersome installation, low operating efficiency, poor sealing performance, insufficient versatility, and easy occurrence of media leakage and debris contamination.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pipe clamping operation device, comprising: The system comprises a clamping body, a sealing assembly, a drill rod assembly, a propulsion drive mechanism, and an operation execution component. The clamping body is used to fix the target pipeline to be operated on. The sealing assembly is located on the contact surface between the clamping body and the pipeline and at the connection point of the drill rod assembly. The propulsion drive mechanism is connected to the drill rod assembly to drive the drill rod assembly to feed or retract axially, thereby realizing drilling, tapping, or plugging operations on the pipeline. The propulsion drive mechanism includes a propulsion nut and a transmission structure. The propulsion nut is threadedly engaged with the drill rod assembly. Rotating the propulsion nut drives the drill rod assembly to move axially. The transmission structure provides rotational driving force and is an electric drilling tool.

[0006] Preferably, the sealing component is an O-ring, which is disposed on the sealing surface of the drill pipe assembly and the clamping body.

[0007] Preferably, it also includes a control valve assembly, a pressure gauge and a detection valve. The control valve assembly is connected to the clamp body via a flange, and the pressure gauge is installed on a pipe on one side of the control valve assembly to display the internal pressure value of the pipe in real time.

[0008] Preferably, it also includes a detection valve disposed on a pipeline on one side of the control valve assembly, the detection valve being used to release internal pressure after the blockage operation is completed.

[0009] Preferably, the drill pipe assembly includes a push nut fixedly connected to a control valve, an outer tube at the top of the push nut, a drill pipe body inside the outer tube and the push nut, and a drill pipe positioning ring inside the outer tube that cooperates with the drill pipe body.

[0010] Preferably, a plurality of rubber O-rings are provided between the push nut and the drill rod body to enhance the sealing of the connection and prevent media leakage during operation.

[0011] Preferably, the lower end of the drill rod body is provided with a small hole drilling position and a large hole drilling position. The small hole drilling position corresponds to drilling a 6.5mm through hole and tapping an M8 thread, and sealing and plugging is achieved by using a pressure cap method; the large hole drilling position corresponds to drilling a 24mm through hole, and sealing is achieved by using a suitable plugging component after drilling.

[0012] Preferably, the lower end of the drill pipe body is connected to different drill bits through a sleeve joint, and the sleeve joint includes a standard sleeve joint with S=14 and an extended sleeve joint with S=27.

[0013] Preferably, the rotation speed of the push nut is controlled at 1-1.5 revolutions per minute, driving the feed speed of the drill rod assembly to be 2-3 mm per minute. When the lower plane of the push nut is flush with the preset working position, the corresponding drilling, tapping or plugging operation is completed.

[0014] Preferably, the sealing assembly further includes leak-proof PTFE tape, which is wrapped around the threaded portion of the pipe joint connecting the clamp body and the control valve assembly, forming a double seal in conjunction with the O-ring.

[0015] Technical effects and advantages of the present invention: Compared with the prior art, the pipe clamping device proposed in this invention has the following advantages: This pipe clamping device is small in size and adaptable to pipe diameters ranging from DN50 to 200mm. It can be quickly installed and fixed without welding, making it easy to carry to different work scenarios. It supports hole positions ranging from 6.5 to 24mm and can be flexibly adapted to different drill bits and external power tools with S=14 standard sleeve fittings and S=27 extended sleeve fittings. It integrates drilling, tapping, and plugging operations to meet diverse pipeline maintenance needs and solve the pain point of traditional equipment being unable to achieve pressureless treatment on the plugging side. It does not rely on large supporting equipment, has no welding pollution, has good sealing performance, and is reusable.

[0016] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0017] Figure 1 This is a perspective view of the external electric drive of the present invention; Figure 2 This is a three-dimensional view of the manual drive mechanism of the present invention; Figure 3 This is a cross-sectional view of the drill pipe assembly of the present invention; Figure 4 This is a partial structural diagram of the present invention; Figure 5 This is an exploded perspective view of the control valve assembly of the present invention.

[0018] In the diagram: 1. Clamping body; 2. O-ring seal; 3. Drill pipe assembly; 31. Outer tube; 32. Drill pipe body; 4. Push drive mechanism; 41. Push nut; 42. Transmission structure; 5. Control valve assembly; 6. Manual valve; 7. Pressure gauge; 8. Detection valve; 9. Sleeve joint; 10. Rubber O-ring; 11. Mounting cover; 12. Handwheel; 13. Handrail. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the present invention provides a pipe clamping operation device, including a clamping body 1, a sealing component, a drill rod assembly 3, a propulsion drive mechanism 4, and operation execution components. The clamping body 1 is used to fix the target pipe to be operated on. The sealing component is disposed on the contact surface between the clamping body 1 and the pipe and the connection part of the drill rod assembly 3. The propulsion drive mechanism 4 is connected to the drill rod assembly 3 to drive the drill rod assembly 3 to feed or retract axially, thereby realizing the drilling, tapping, or plugging operation of the pipe.

[0021] The propulsion drive mechanism 4 includes a propulsion nut 41 and a transmission structure 42. The propulsion nut 41 is threadedly engaged with the drill rod assembly 3. By rotating the propulsion nut 41, the drill rod assembly 3 is driven to move axially. The transmission structure 42 is used to provide rotational driving force and is an electric drilling tool.

[0022] Specifically, pressure gauge 7 is equipped to monitor the internal pressure of the pipeline in real time, and combined with detection valve 8 to realize pressure venting verification after operation, which can accurately judge the tightness of pipeline sealing and avoid the risk of overpressure leakage; strong magnetic ring sleeve can efficiently adsorb drilling debris, prevent impurities from entering the pipeline and affecting the medium transportation or damaging the equipment, and at the same time, the O-ring seal 2 and the leak-proof PTFE tape form a double seal to further block the medium leakage path and ensure the safety of the working environment.

[0023] like Figure 1 As shown, the O-ring 2 is interference-fitted with the outside of the drill pipe assembly 3 and the sealing surface of the clamp body 1. The mounting groove of the O-ring 2 is opened in the annular groove of the sealing surface of the clamp body 1 and the drill pipe assembly 3. The mounting groove limits the movement of the O-ring 2 during operation to prevent it from shifting and falling off. With the help of silicone grease-based anti-rust lubricant, the sealing fit is improved and the friction loss between the O-ring 2 and the contact surface is reduced.

[0024] like Figure 1 As shown, the control valve assembly 5 includes a valve body, a valve core, and an operating handle. One end of the valve body is bolted to the flange interface of the clamping body 1 via a flange, and the other end is fixedly connected to the outer tube 31 of the drill rod assembly 3. The pressure gauge 7 is vertically installed in the detection hole on the side wall of the valve body via a threaded interface. The valve core is controlled by the operating handle to switch the valve body, thereby achieving isolation or connection between the inside of the pipeline and the external environment during operation.

[0025] like Figure 1 As shown, the detection valve 8 is a manual ball valve structure, which is fixed to the valve body side wall of the control valve assembly 5 by a threaded connection. The flow channel of the detection valve 8 is connected to the internal cavity of the valve body. After the blocking operation is completed, the channel is opened by rotating the valve stem of the detection valve 8 to realize the controllable venting of the internal pressure of the pipeline, avoid the risk of medium splashing caused by sudden pressure drop, and improve the safety of operation.

[0026] like Figure 3As shown, the drill pipe positioning ring is a ring structure. Its inner wall slides with the outer wall of the drill pipe body 32, and its outer wall is interference-fitted with the inner wall of the outer tube 31. At least two drill pipe positioning rings are arranged at intervals along the axial direction of the outer tube 31. Through the synergistic effect of axial limiting and radial guiding, the radial swing of the drill pipe body 32 is restricted, ensuring that the drill pipe body 32 is smoothly fed or retracted along the axial direction.

[0027] like Figure 3 As shown, the rubber O-ring 10 is fitted into the annular groove of the drill rod body 32, and the outer diameter of the rubber O-ring 10 is tightly fitted with the inner thread hole wall of the push nut 41 to form a dynamic sealing structure. During the axial movement of the drill rod body 32, the leakage path of the medium is continuously blocked. At the same time, the elastic deformation characteristics of the rubber O-ring 10 can compensate for the thread fit clearance and improve the sealing reliability of the connection.

[0028] like Figure 3 As shown, the lower end of the drill rod body 32 is provided with a stepped connecting part. The small hole drilling position and the large hole drilling position correspond to stepped surfaces of different diameters. The stepped surface is provided with a positioning pin hole. The working execution part is circumferentially fixed by the cooperation of the positioning pin and the positioning pin hole. Furthermore, the use of threaded connections enhances connection stability, ensuring that the working components and the drill rod body 32 move synchronously during drilling and tapping, thus avoiding operational failures caused by relative slippage.

[0029] like Figure 3 As shown, one end of the sleeve connector 9 is provided with a square hole that fits the square head of the drill rod body 32, and the other end is provided with a connection hole that fits the output shaft of the external electric drilling tool. The sleeve connector 9 is fixed to the drill rod body 32 by locking bolts, realizing a detachable transmission connection between the external power and the drill rod body 32, which facilitates the quick replacement of different specifications of operating components according to the operation requirements.

[0030] like Figure 1 As shown, the rotation speed of the push nut 41 is controlled at 1-1.5 revolutions per minute, driving the feed speed of the drill rod assembly 3 to be 2-3 mm per minute. When the lower plane of the push nut 41 is flush with the preset working position, the corresponding drilling, tapping or plugging operation is completed. The push nut 41 is rotatably connected to the top of the outer tube 31 via a bearing. When the push nut 41 is rotated, the rotational motion is converted into the axial linear motion of the drill pipe body 32 through thread transmission. The bearing reduces the frictional resistance between the push nut 41 and the outer tube 31.

[0031] like Figure 1As shown, the leak-proof PTFE tape is wrapped around the external thread surface of the pipe joint, with the wrapping direction consistent with the tightening direction of the thread, and the number of wrapping layers is 3-5 layers. It forms a dual sealing system of thread sealing and end face sealing with the O-ring 2. The end face of the pipe joint is provided with a sealing groove, and the O-ring 2 is embedded in the sealing groove. After the pipe joint is tightened, it fits tightly with the flange end face, further blocking the medium leakage channel.

[0032] The working principle of this invention is as follows: Before operation, the target pipeline section to be worked on (within a length range of 250mm) is cleaned, and the clamping body 1 is clamped and fixed to the corresponding position on the pipeline to form a closed working space. The sealing component ensures sealing performance through double protection: O-rings 2 (specifications include 7.5×2.6mm and 7.5×0.6mm) are installed on the outside of the drill pipe and on the sealing surface of the clamping body 1, and silicone grease or similar anti-rust lubricant is applied; the threaded connection of the pipe joint is wrapped with leak-proof PTFE tape to prevent leakage of the medium inside the pipeline during operation, providing a safe and sealed environment for subsequent operations.

[0033] The external electric drilling tool is connected to the square head of the drill rod assembly 3 via replaceable sleeve joints 9 (S=14 standard sleeve joint 9, S=27 extended sleeve joint 9). The electric tool provides a stable rotation speed of 60-80 rpm, driving the drill rod and end working parts to rotate. At the same time, rotating the feed nut 41 (rotation speed 1-1.5 rpm) drives the drill rod to feed axially through the threaded engagement. The feed speed is controlled at 2-3 mm / min, realizing coordinated control of drilling power and feed motion to ensure drilling accuracy.

[0034] Install and secure the plugging connector assembly. Manually drive the drill rod to move the plugging component to the working position until the push nut 41 can no longer move downwards, thus achieving a seal. Open the detection valve 8 to release the internal pressure. If the pressure gauge 7 displays zero and the pressure does not change within 5 minutes, the seal is considered successful, ensuring that the pipeline's sealing meets the standards after the operation.

[0035] Example 2 like Figure 2 , Figure 3 and Figure 4 As shown, in this example, the transmission mechanism can also be a manual device, including a mounting cover 11 installed on the top of the drill pipe body 32. A handwheel 12 is rotatably mounted on one side of the mounting cover 11, and a handrail 13 is rotatably mounted on one side of the handwheel 12. A transmission component is provided inside the mounting cover 11 to transmit the horizontal power of the handwheel 12 to the vertical power of the drill pipe body 32. When the transmission mechanism is a manual device, there is no need to install the control valve assembly 5, pressure gauge 7 and detection valve 8. The overall structure is more streamlined and suitable for pipeline drilling, tapping and plugging operations without external power supply and in simple working scenarios. The control valve is a manual valve 6.

[0036] The transmission mechanism includes a mounting cover 11 installed on the top of the drill pipe body 32. The mounting cover 11 is a closed cavity structure. A handwheel 12 is rotatably mounted on one side of the cover via a bearing. The outer circumference of the handwheel 12 is provided with anti-slip texture. A handrail 13 is vertically fixed on the side of the handwheel 12 away from the mounting cover 11 for easy gripping and force application by the operator. A transmission assembly is provided inside the mounting cover 11. The transmission assembly includes a driving bevel gear and a driven bevel gear that mesh with each other. The driving bevel gear is coaxially fixed with the rotating shaft of the handwheel 12. The driven bevel gear is sleeved and fixed on the top of the drill pipe body 32. Through the meshing of the driving bevel gear and the driven bevel gear, the horizontal power generated by the rotation of the handwheel 12 is converted into the vertical power of the rotation of the drill pipe body 32, realizing the reversal of power direction transmission.

[0037] The drill pipe body 32 is threadedly engaged with the push nut 41, which is fixedly installed at the bottom of the mounting cover 11. The push nut 41 is made of 12.9 grade high-strength material, conforming to GB / T77-2007 standard, and the thread fit accuracy is 6H grade, ensuring transmission stability and wear resistance. O-rings 2 are installed on the outside of the drill pipe body 32 and the contact surfaces of the mounting cover 11 and the clamp body 1, with specifications of 7.5×2.6mm and 7.5×0.6mm respectively. The surface of the O-rings 2 is coated with silicone grease-based anti-rust lubricant. The threaded connection between the clamp body 1 and the pipe joint is wrapped with leak-proof PTFE tape, forming a double sealing structure.

[0038] Clean the target pipeline section to be worked on (within 250mm in length), clamp and fix the clamp body 1 to the pipeline with a diameter of DN50-200mm, ensuring that the clamp body 1 fits tightly to the pipeline; check whether the O-ring seal 2 is installed in place, and after confirming that it is not detached or damaged, complete the sealing protection.

[0039] Select a small-hole (6.5mm) or large-hole (24mm or more) drill bit according to the operation requirements, and fix it to the lower end of the drill rod body 32 by threaded connection; the operator holds the handle 13 and rotates the handwheel 12, which drives the drill rod body 32 to rotate through the transmission component. At the same time, the operator manually rotates the push nut 41 to drive the drill rod body 32 to feed downward along the axis. The feed speed is manually controlled by the rotation force and frequency of the handwheel 12; when the drilling depth reaches the preset value and there is no obvious resistance in the drill rod, the drilling is considered to be completed. The operator then rotates the handwheel 12 and the push nut 41 in the opposite direction to drive the drill rod body 32 back.

[0040] Remove the drill bit and replace it with an integrated drill-tapping tap (compatible with M8 threads). Secure it to the lower end of the drill rod body 32 using a safety pin. Use a box wrench with S=14 to clamp the drill rod body 32. Manually rotate the box wrench to rotate the tap while slowly rotating the feed nut 41 to control the feed of the drill rod body 32 until the lower plane of the feed nut 41 is flush with the preset tapping position, indicating that the threading is complete. Reverse the rotation of the box wrench and the feed nut 41 to remove the tap from the working position.

[0041] Replace the plugging connector assembly and secure it with a safety pin. Manually rotate the push nut 41 to move the drill pipe body 32 downwards, sending the plugging component to the working position. Continue to apply force to rotate the push nut 41 until the drill pipe body 32 and the push nut 41 can no longer move downwards, completing the sealing and plugging. After standing for 5 minutes, check whether there is any medium leakage around the clamping body 1. If there is no leakage, the plugging is deemed qualified.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pipe clamping device, characterized in that: The device includes a clamping body (1), a sealing assembly, a drill rod assembly (3), a propulsion drive mechanism (4), and operation execution components. The clamping body (1) is used to fix the target pipeline to be operated on. The sealing assembly is set on the contact surface between the clamping body (1) and the pipeline and the connection part of the drill rod assembly (3). The propulsion drive mechanism (4) is connected to the drill rod assembly (3) to drive the drill rod assembly (3) to feed or retract along the axial direction, so as to realize the drilling, tapping or plugging operation of the pipeline. The propulsion drive mechanism (4) includes a propulsion nut (41) and a transmission structure (42). The propulsion nut (41) is threadedly engaged with the drill rod assembly (3). By rotating the propulsion nut (41), the drill rod assembly (3) is driven to move axially. The transmission structure (42) is used to provide rotational driving force and is an electric drilling tool.

2. The pipe clamping device according to claim 1, characterized in that: The sealing component is an O-ring (2), which is located on the outside of the drill pipe assembly (3) and the sealing surface of the clamping body (1).

3. The pipe clamping device according to claim 1, characterized in that: It also includes a control valve assembly (5), a pressure gauge (7) and a detection valve (8). The control valve assembly (5) is connected to the clamp body (1) via a flange. The pressure gauge (7) is installed on a pipe on one side of the control valve assembly (5) to display the internal pressure value of the pipe in real time.

4. A pipe clamping device according to claim 3, characterized in that: It also includes a detection valve (8) installed on a pipeline on one side of the control valve assembly (5), the detection valve (8) being used to release internal pressure after the blockage operation is completed.

5. A pipe clamping device according to claim 1, characterized in that: The drill pipe assembly (3) includes a push nut (41) fixedly connected to the control valve. The top of the push nut (41) is provided with an outer tube (31). The drill pipe body (32) is provided inside the outer tube (31) and the push nut (41). The drill pipe positioning ring that cooperates with the drill pipe body (32) is provided inside the outer tube (31).

6. A pipe clamping device according to claim 5, characterized in that: Several rubber O-rings (10) are provided between the push nut (41) and the drill rod body (32) to enhance the sealing of the connection and prevent media leakage during operation.

7. A pipe clamping device according to claim 5, characterized in that: The lower end of the drill rod body (32) is provided with a small hole drilling position and a large hole drilling position. The small hole drilling position corresponds to drilling a 6.5mm through hole and tapping an M8 thread, and sealing and plugging is achieved by using a pressure cap method. The large hole drilling position corresponds to drilling a 24mm through hole, and sealing is achieved by using a suitable plugging component after drilling.

8. A pipe clamping device according to claim 5, characterized in that: The lower end of the drill pipe body (32) is connected to different drill bits through a sleeve joint (9), and the sleeve joint (9) includes a standard sleeve joint (9) with S=14 and an extended sleeve joint (9) with S=27.

9. A pipe clamping device according to claim 6, characterized in that: The rotation speed of the push nut (41) is controlled at 1-1.5 revolutions per minute, which drives the feed speed of the drill rod assembly (3) to 2-3 mm per minute. When the lower plane of the push nut (41) is flush with the preset working position, the corresponding drilling, tapping or plugging operation is completed.

10. A pipe clamping device according to claim 2, characterized in that: The sealing assembly also includes a leak-proof PTFE tape, which is wrapped around the threaded part of the pipe joint connecting the clamp body (1) and the control valve assembly (5) to form a double seal with the O-ring (2).

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