A pipeline traction parachute recovery device

Abstract

The present invention discloses a pipeline traction parachute recovery device, comprising: a recovery device and a recovery drum, the recovery device being fixed to the recovery drum; a recovery rod, a valve body, a gripper, a sleeve, a power mechanism, a gripper bracket, an endoscope, a sealing ring, and fasteners; the recovery rod is located within the sleeve and can move freely up and down, with a cable hole in the middle of the recovery rod connected at both ends for passing the endoscope cable; the valve body is mounted at the end of the sleeve, with a power mechanism in the middle; the end of the recovery rod is connected to the power mechanism, and a sealing ring is provided between the power mechanism and the valve body; two grippers are symmetrically fixed to the gripper bracket, which is mounted to the valve body via four fasteners, and the endoscope is mounted in the middle of the power mechanism. The present invention solves the problem of recovering a traction parachute in a water pipeline.

Description

Technical Field

[0001] The invention relates to the field of pipeline cable laying with pressure, and in particular to a pipeline traction parachute recovery device. Background Art

[0002] The use of distributed optical fiber for monitoring broken wires in PCCP pipelines has become a trend. Currently, the primary monitoring method is to lay distributed optical fiber within the pipeline. A major challenge with this approach is how to lay the cable within an operating pipeline. In practice, optical fiber cables are extremely heavy, making direct deployment and retrieval impossible. Therefore, the primary method currently employed is to first lay a traction cable to pull the optical cable actually required for monitoring.

[0003] In practice, in order to enable the towing cable to reach the downstream recovery point under the impact of the water flow, a towing parachute needs to be tied to the starting end of the towing cable. The function of the towing parachute is to drive the towing cable forward under the impact of the water flow, so that it can reach the downstream recovery point smoothly.

[0004] However, how to recover the parachute after reaching the downstream becomes a problem, especially in large-diameter raw water pipelines. It is difficult to accurately locate and extract the parachute at the recovery end, so it is necessary to design a recovery device to address the above problem. Summary of the Invention

[0005] The present invention provides a pipeline traction parachute recovery device, which solves the problem of recovering the traction parachute in the water pipeline. The details are described below:

[0006] A pipeline traction parachute recovery device, comprising: a recovery device and a recovery cylinder, wherein the recovery device is fixed to the recovery cylinder; the recovery device comprises: a recovery rod, a valve body, a gripper, a sleeve, a power mechanism, a gripper bracket, an endoscope, a sealing ring, and a fastener;

[0007] The recovery rod is located inside the sleeve and can move up and down freely. A cable hole is provided in the middle of the recovery rod, which is connected at both ends and is used to pass the cable of the endoscope. The valve body is installed at the end of the sleeve, and a power mechanism is provided in the middle. The end of the recovery rod is connected to the power mechanism, and a sealing ring is provided between the power mechanism and the valve body.

[0008] The two grippers are symmetrically fixed on the gripper bracket, the gripper bracket is mounted on the valve body through four fasteners, and the endoscope is mounted in the middle of the power mechanism.

[0009] The valve body is provided with a cavity, a threaded hole, a fixing hole and a limiting groove.

[0010] The cavity structure is cylindrical with a smooth inner surface and is coaxial with the outer surface of the valve body. It is used to install the power mechanism so that the power mechanism can slide up and down on its inner surface; the threaded hole is located at the bottom of the cavity and penetrates the valve body for connection with the end of the sleeve; four fixing holes and a limit groove are located above the cavity.

[0011] Furthermore, the power mechanism includes: two thrust brackets, an endoscope bracket, a sealing groove, a threaded hole, a through hole and a slide groove,

[0012] The two thrust brackets are made of thin sheet metal at one end of the power mechanism and are provided with a slide groove. The endoscope bracket is located in the middle of the power mechanism, just between the two thrust brackets, and is formed into a cylindrical shape. A through hole is provided in the middle of the endoscope bracket for installing the endoscope.

[0013] A threaded hole connected to the through hole is provided in the middle of the other end of the power mechanism, which is used to install the power mechanism on the end of the recovery rod. On the same side, a sealing groove is provided on the outer circle of the power mechanism for installing a sealing ring.

[0014] The slide groove is in a Z-shape, and is provided with a starting groove, a thrust groove and a stop groove, and the thrust groove forms a preset angle with the axis of the power mechanism.

[0015] Among them, the gripper bracket as a whole is a rotationally symmetrical structure, consisting of two axial holes, a central circular hole, a fixing hole, a fitting surface and a supporting surface. The two axial holes are located between the fitting surface and the supporting surface. The central circular hole is located in the center of the gripper bracket for passing the endoscope bracket. The fixing holes are located on both sides of the gripper bracket for installing and fixing the gripper bracket on the valve body.

[0016] Furthermore, the gripper comprises: a long arm, a hook, a rotating shaft, a short arm and a sliding pin.

[0017] The hook is located at the end of the long arm and is shaped like a hook. The long arm and the hook can be formed into an integral piece of sheet metal. A rotating shaft is provided at the other end of the long arm. One end of the rotating shaft is vertically connected to the surface of the long arm, and the other end is connected to the short arm. The short arm and the long arm form a 90-degree angle, and a sliding pin is provided on the other side of the short arm.

[0018] The beneficial effects of the technical solution provided by the present invention are:

[0019] 1. This pipeline traction parachute recovery device can recover the traction parachute in the pipeline. It adopts a sliding guide groove structure to convert linear motion into high-torque rotation output, and can control the flexible claw movement of grippers with a length of more than one meter.

[0020] 2. The pipeline towing parachute recovery device uses a curved rigid gripper and leverages the principle of leverage to amplify tiny movements by dozens of times in a narrow space by shortening the power arm (e.g., short arm) and lengthening the resistance arm (e.g., long arm). This fully utilizes the advantages of leverage within the constraints of a narrow space.

[0021] 3. The pipeline traction parachute recovery device has a compact structure and a small outer diameter, and can grab objects in narrow pipeline environments;

[0022] 4. An endoscope is set in the middle of the gripper of the pipeline traction parachute recovery device, which can effectively assist in grabbing objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the appearance and structure diagram of the recovery device;

[0024] Figure 2 This is a diagram of the internal structure of the recovery device;

[0025] Figure 3 It is the structural diagram of the valve body;

[0026] Figure 4 It is the structural diagram of the power mechanism;

[0027] Figure 5 This is the structural diagram of the gripper bracket;

[0028] Figure 6 This is the structural diagram of the gripper;

[0029] Figure 7 This is a working principle diagram of the recovery device;

[0030] Figure 8 This is an overall structural diagram of a pipeline traction parachute recovery device;

[0031] Figure 9 This is a usage scenario diagram of a pipeline traction parachute recovery device.

[0032] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0033] 1: Recovery device; 10: Recovery rod; 100: Cable hole;

[0034] 11: valve body; 110: cavity; 111: threaded hole;

[0035] 112: first fixing hole; 113: limiting slot; 12: grip;

[0036] 120: long arm; 121: hook; 122: rotating axis;

[0037] 123: short arm; 124: sliding pin; 13: sleeve;

[0038] 14: Power mechanism; 140: Thrust bracket; 141: Endoscope bracket;

[0039] 142: Sealing groove; 143: Threaded hole; 144: Through hole;

[0040] 145: chute; 1450: starting slot; 1451: thrust slot;

[0041] 1452: cut-off groove; 15: gripper bracket; 150: shaft hole;

[0042] 151: center circular hole; 152: second fixing hole; 153: fitting surface;

[0043] 154: Support surface; 16: Endoscope; 160: Cable;

[0044] 17: Sealing ring; 18: Fastener; 2: Recovery container;

[0045] 20: Cylinder; 21: Sealing ring; 22: Flange;

[0046] 3: Pipeline; 4: Traction parachute. DETAILED DESCRIPTION

[0047] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention are described in further detail below.

[0048] To overcome the problem of recovering the traction parachute in the water pipe, see Figures 1 to 9 An embodiment of the present invention provides a pipeline traction parachute recovery device, including: a recovery device 1 and a recovery tube 2. The recovery device 1 is fixed on the recovery tube 2. When in use, the recovery tube 2 is installed on the pipeline 3, and the traction parachute 4 in the recovery pipeline 3 is recovered through the recovery device 1.

[0049] Among them, Figure 1 、 2As shown, the recovery device 1 includes: a recovery rod 10, a valve body 11, a gripper 12, a sleeve 13, a power mechanism 14, a gripper bracket 15, an endoscope 16, a sealing ring 17 and a fastener 18. The recovery rod 10 is located inside the sleeve 13 and can move up and down freely. A cable hole 100 with both ends connected is provided in the middle of the recovery rod 10 for passing the cable 160 of the endoscope 16. The valve body 11 is installed at the end of the sleeve 13, and a power mechanism 14 is provided in the middle. The end of the recovery rod 10 is connected to the power mechanism 14, and a sealing ring 17 is provided between the power mechanism 14 and the valve body 11. The two grippers 12 are symmetrically fixed on the gripper bracket 15, and the gripper bracket 15 is mounted on the valve body 11 by four fasteners 18. The endoscope 16 is installed in the middle of the power mechanism 14. The entire device can realize the opening and closing of the two grippers 12.

[0050] like Figure 3 As shown, the valve body 11 is provided with a cavity 110, a threaded hole 111, a fixing hole 112, and a limiting groove 113. The cavity 110 has a cylindrical structure with a smooth inner surface and is coaxial with the outer surface of the valve body 11. It is used to mount the power mechanism 14, enabling the power mechanism 14 to slide up and down on its inner surface. The threaded hole 111 is located at the bottom of the cavity 110 and penetrates the valve body 11, and is used to connect with the end of the sleeve 13. Four fixing holes 112 and limiting grooves 113 are located above the cavity 110. The fixing holes 112 are used to mount the gripper bracket 15, and the limiting grooves 113 are used to constrain and limit the gripper 12.

[0051] like Figure 4As shown, the power mechanism 14 is formed into a cylindrical shape as a whole, and the outer circle is exactly the same as the diameter of the inner wall of the cavity 110, and can slide freely in the cavity 110. The power mechanism 14 is mainly used to convert the linear motion transmitted from the recovery rod 10 into the rotational motion of the gripper 12. Considering the need to move the two grippers 12 in a mirror image at the same time, the overall structure is symmetrical. The power mechanism 14 specifically includes: two thrust brackets 140, an endoscope bracket 141, a sealing groove 142, a threaded hole 143, a through hole 144 and a slide 145. The two thrust brackets 140 are in the shape of thin sheet metal at one end of the power mechanism 14, and are provided with a slide 145. The endoscope bracket 141 is located in the middle of the power mechanism 14, just in the middle of the two thrust brackets 140, and is formed into a cylindrical tube shape. A through hole 144 is provided in the middle of the endoscope bracket 141 for mounting the endoscope 16. A threaded hole 143 is provided in the middle of the other end of the power mechanism 14, which is connected to the through hole 144 and is used to install the power mechanism 14 on the end of the recovery rod 10. On the same side, a sealing groove 142 is provided on the outer circle of the power mechanism 14 for installing the sealing ring 17. The purpose of installing the sealing ring 17 here is to seal on the one hand, and to assist the gripper 12 to automatically close under the fluid pressure in the pipe on the other hand. In addition, the slide groove 145 is shaped like a Z, and is provided with a starting groove 1450, a thrust groove 1451 and a stop groove 1452. The thrust groove 1451 forms a certain angle with the axis of the power mechanism 14, which is 45 degrees in this embodiment.

[0052] like Figure 5 The structural diagram of the gripper bracket 15 is given in the figure, which is a rotationally symmetrical structure as a whole. It is mainly composed of two axial holes 150, a central circular hole 151, a fixing hole 152, a fitting surface 153 and a supporting surface 154. The two axial holes 150 are located between the fitting surface 153 and the supporting surface 154. Their function is to support the gripper 12 and become the rotation center of the gripper 12. The central circular hole 151 is located in the center of the gripper bracket 15 and is used to pass the endoscope bracket 141. The fixing holes 152 are located on both sides of the gripper bracket 15 and are used to install and fix the gripper bracket 15 on the valve body 11. The fitting surface 153 is used to support the side of the gripper 12, and the support surface 154 is used to make the gripper bracket 15 fit tightly with the thrust bracket 140 to ensure its reliability and stability.

[0053] The structure of the gripper 12 is as follows Figure 6As shown, it includes: a long arm 120, a hook 121, a rotating shaft 122, a short arm 123 and a sliding pin 124. The cross-section of the long arm 120 is rectangular, and the hook 121 is located at the end of the long arm 120 and is shaped like a hook. The long arm 120 and the hook 121 can be integrally formed by sheet metal. The length of the long arm 120 can range from 0.5 meters to 2 meters. In this embodiment, 0.5 meters is used. A rotating shaft 122 is provided at the other end of the long arm 120. One end of the rotating shaft 122 is vertically connected to the surface of the long arm 120, and the other end is connected to the short arm 123. The short arm 123 forms a 90-degree angle with the long arm 120. A sliding pin 124 is provided on the other surface of the short arm 123. Combined Figure 2 、 5 The installation relationship of the gripper 12 is described as follows: the two grippers 12 are respectively installed on the left and right sides of the gripper bracket 15, wherein the rotating shaft 122 on the gripper 12 is fixed on the shaft hole 150, the long arm 120 is tightly fitted with the fitting surface 153, the short arm 123 is fitted with the support surface 154, and the sliding pin 124 on the short arm 123 is located in the slide groove 145 on the power mechanism 14, and can slide freely along the slide groove 145.

[0054] like Figure 1 As shown in FIG, in the initial state, the gripper 12 is in a closed state, at which time the sliding pin 124 on the gripper 12 is located at the starting groove 1450 of the slide groove 145. When the recovery rod 10 is pushed downward (as shown in FIG, Figure 7 As shown), the power mechanism 14 moves downward under the action of the recovery rod 10, and the sliding pin 124 enters the thrust groove 1451 and moves toward the cut-off groove 1452 relative to the power mechanism 14. During this process, since the gripper bracket 15 is in a stationary state, the rotating shaft 122 located on the shaft hole 150 cannot move horizontally, but under the action of the thrust groove 1451, the sliding pin 124 drives the short arm 123 and the long arm 120 to rotate along the rotating shaft 122 until the sliding pin 124 enters the cut-off groove 1452, and the gripper 12 stops rotating, and the gripper reaches the maximum opening state. When the recovery rod 10 is pulled upward, the power mechanism 14 moves upward, and the sliding pin 124 enters the thrust groove 1451 from the cut-off groove 1452 and moves toward the starting groove 1450 relative to the power mechanism 14. At this time, under the action of the thrust groove 1451, the sliding pin 124 drives the short arm 123 and the long arm 120 to rotate in the opposite direction along the rotating shaft 122, which is manifested as a closing movement of the gripper 12 as a whole, until the sliding pin 124 enters the starting groove 1450 and stops moving, completing a clawing action of the gripper 12. During this process, the long arm 120 swings back and forth once in the limit groove 113 on the valve body 11.

[0055] Figure 8 、 9The recovery drum 2 is shown in the figure. The recovery device 1 must work with the recovery drum 2 to recover the parachute. The recovery drum 2 comprises a drum body 20, a sealing ring 21, and a flange 22. The drum body 20 and sealing ring 21 support and seal the recovery device 1. The recovery drum 2 is connected to the pipeline 3 via the flange 22. The recovery device 1 utilizes the connection provided by the recovery drum 2 to penetrate the interior of the pipeline 3 for operation. The pipeline is observed using an endoscope 16 at the end of the recovery device 1. When the parachute 4 is detected, the recovery rod 10 is pressed downward to open the gripper 12, which grasps the parachute 4 and recovers it. Within the pressure pipeline, the power mechanism 14 of the recovery device is constantly subject to fluid pressure. Therefore, the downward pressure applied by the recovery rod 10 is constantly impacted by the upward fluid pressure within the pipeline. This force acts as a clamping force for the gripper 12 when recovering the parachute 4. Furthermore, the purely mechanical power structure employed ensures a gripper length of up to 2 meters, significantly increasing the gripping range. This has great potential for use in large-diameter raw water pipelines, such as those with a diameter of 4 meters.

[0056] Unless otherwise specified, the embodiments of the present invention do not limit the models of the components. Any component that can perform the above functions may be used.

[0057] Those skilled in the art will understand that the accompanying drawings are only a schematic diagram of a preferred embodiment, and the serial numbers of the embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipeline traction parachute recovery device, characterized in that: The device comprises: a recovery device and a recovery cylinder, wherein the recovery device is fixed on the recovery cylinder; the recovery device comprises: a recovery rod, a valve body, a gripper, a sleeve, a power mechanism, a gripper bracket, an endoscope, a sealing ring and a fastener; The recovery rod is located inside the sleeve and can move up and down freely. A cable hole is provided in the middle of the recovery rod, which is connected at both ends and is used to pass the cable of the endoscope. The valve body is installed at the end of the sleeve, and a power mechanism is provided in the middle. The end of the recovery rod is connected to the power mechanism, and a sealing ring is provided between the power mechanism and the valve body. The gripper bracket is a rotationally symmetrical structure as a whole, consisting of two axial holes, a central circular hole, a fixing hole, a fitting surface and a supporting surface. The two axial holes are located between the fitting surface and the supporting surface, and their function is to support the gripper and become the rotation center of the gripper. The central circular hole is located in the center of the gripper bracket for passing the endoscope bracket. The fixing holes are located on both sides of the gripper bracket for installing and fixing the gripper bracket on the valve body. The fitting surface is used to support the side of the gripper, and the supporting surface is used to make the gripper bracket fit tightly with the thrust bracket. The two grippers are symmetrically fixed on the gripper bracket, the gripper bracket is mounted on the valve body through four fasteners, and the endoscope is installed in the middle of the power mechanism; The gripper includes: a long arm, a hook, a rotating shaft, a short arm and a sliding pin. The hook is located at the end of the long arm and is shaped like a hook. The long arm and the hook can be integrally formed by sheet metal. A rotating shaft is provided at the other end of the long arm. One end of the rotating shaft is vertically connected to the surface of the long arm, and the other end is connected to the short arm. The short arm and the long arm form a 90-degree angle, and a sliding pin is provided on the other surface of the short arm. The rotating shaft on the gripper is fixed on the shaft hole, the long arm is tightly fitted with the fitting surface, the short arm is fitted with the support surface, and the sliding pin on the short arm is located in the slide groove on the power mechanism and can slide freely along the slide groove. The power mechanism is cylindrical in shape, with an outer diameter the same as the inner wall of the cavity, and can slide freely in the cavity. The power mechanism is used to convert the linear motion transmitted from the recovery rod into the rotational motion of the gripper. The power mechanism includes: two thrust brackets, an endoscope bracket, a sealing groove, a threaded hole, a through hole and a slide groove. The two thrust brackets are made of thin sheet metal at one end of the power mechanism and are provided with a slide groove. The endoscope bracket is located in the middle of the power mechanism, just between the two thrust brackets, and is formed into a cylindrical shape. A through hole is provided in the middle of the endoscope bracket for installing the endoscope. A threaded hole connected to the through hole is provided in the middle of the other end of the power mechanism, which is used to install the power mechanism at the end of the recovery rod. On the same side, a sealing groove is provided on the outer circle of the power mechanism for installing a sealing ring; the sliding groove is in a Z shape, with a starting groove, a thrust groove and a stop groove, and the thrust groove forms a preset angle with the axis of the power mechanism; The valve body is provided with a cavity, a threaded hole, a fixing hole and a limiting groove. The cavity structure is cylindrical with a smooth inner surface and is coaxial with the outer surface of the valve body. It is used to install the power mechanism so that the power mechanism can slide up and down on its inner surface; the threaded hole is located at the bottom of the cavity and penetrates the valve body for connection with the end of the sleeve; four fixing holes and a limit groove are located above the cavity.

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