Underwater pipeline monitoring device

Abstract

The present invention relates to the field of underwater pipeline monitoring, and in particular to an underwater pipeline monitoring device. It includes a frame, and also includes a monitoring release mechanism and a buoyancy adjustment mechanism arranged on the frame. The monitoring node release mechanism includes a plurality of monitoring nodes slidingly arranged along the monitoring node slide rail; the monitoring node includes a node support frame and two clamps hinged to the bottom of the node support frame. The top of the node support frame is provided with a cable fixing part for locking the monitoring cable, and the two clamps are tightly clamped to the outside of the pipeline. The bottom of the cable fixing part is provided with an electrical docking plug. It realizes the real-time monitoring requirements of submarine pipelines, and completes the installation, maintenance and recovery of pipeline monitoring nodes through a submersible.

Description

Technical Field

[0001] The invention relates to the field of underwater pipeline monitoring, in particular to an underwater pipeline monitoring device. Background Art

[0002] At present, when submarine pipelines and cables need to be monitored, it is impossible to pre-fabricate sensors for real-time monitoring in advance. Therefore, the monitoring of submarine pipelines is generally carried out by regular inspections along the pipelines by submersibles or surface ships. The disadvantages are high cost and poor real-time performance.

[0003] At present, some monitoring devices have appeared on the oil pipeline, but these monitoring devices are installed on the oil pipeline branches or equipment nodes. The installation density of the monitoring devices is relatively sparse, and because the monitoring devices are installed together with the oil pipeline, the monitoring devices cannot be taken out separately for maintenance. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and propose an underwater pipeline monitoring device, which realizes the real-time monitoring requirements of submarine pipelines and completes the installation, maintenance and recovery of pipeline monitoring nodes through a submersible.

[0005] The technical solution of the present invention is: an underwater pipeline monitoring device, comprising a frame, and further comprising a monitoring release mechanism and a buoyancy adjustment mechanism arranged on the frame.

[0006] The monitoring node release mechanism includes several monitoring nodes slidably arranged along the monitoring node slide rail; the monitoring node includes a node support frame and two clamps hinged at the bottom of the node support frame, and the top of the node support frame is provided with a cable fixing part for locking the monitoring cable, the two clamps are tightly clamped to the outside of the pipeline, and an electrical docking plug is provided at the bottom of the cable fixing part.

[0007] In the present invention, the monitoring node release mechanism also includes a monitoring node release screw and a monitoring node release screw hydraulic motor, and the output shaft of the monitoring node release screw hydraulic motor is fixedly connected to the monitoring node release screw;

[0008] One end of the monitoring node slide rail is tilted downward;

[0009] A threaded hole is provided on the top of the monitoring node, and the threaded hole is spirally connected to the monitoring node release screw.

[0010] The top two outer sides of the node support rack are symmetrically provided with slide rail brackets, and the slide rail brackets are slidably sleeved on the outer sides of the monitoring node slide rails;

[0011] At the center of the top of the node support frame, there is a cable fixing part. On the top of the slide rail support, there is also a collar and an external hydraulic interface. The collar is provided with a lead screw threaded hole, and the internal thread of the lead screw threaded hole is in spiral connection with the external thread of the monitoring node release lead screw.

[0012] The top end of the clamping jaw is hinged to the bottom of the node support frame. The bottom end of the clamping jaw is pointed, and several rubber pads are provided on the inner surface of the clamping jaw.

[0013] A one-way clamping part is also connected between the node support frame and the clamping jaw;

[0014] The one-way clamping part includes a locking hydraulic cylinder and a self-locking support rod inside the locking hydraulic cylinder. The top of the cylinder body of the locking hydraulic cylinder is hinged to the node support frame, and the bottom of the piston of the locking hydraulic cylinder is hinged to the clamping jaw;

[0015] The bottom of the self-locking support rod is hinged to the clamping jaw. A T-shaped support rod is fixedly connected to the top of the self-locking support rod. The T-shaped support rod includes a rod body and a T-shaped pin connected to the end of the rod body. The T-shaped pin is stuck outside the helical tooth groove on the outside of the lower part of the node support frame. The rod body and the T-shaped pin are fixedly connected by a threaded method.

[0016] The cable fixing part includes a fixing groove and a rotating fixing rod. The fixing groove is located in the middle of the top surface of the node support frame, and the docking interface of the monitoring cable is arranged in the fixing groove;

[0017] The rotating fixing rod is located above the fixing groove. One end of the rotating fixing rod is hinged to the node support frame. The other end of the rotating fixing rod is provided with a long strip-shaped groove. A swinging screw rod is arranged in the long strip-shaped groove. A fixing protrusion is provided on the bottom surface of the rotating fixing rod, and the fixing protrusion is located in the fixing groove;

[0018] The bottom of the swinging screw rod is hinged to the node support frame, and a rotating fixing sleeve is provided on the upper part of the swinging screw rod. The rotating fixing sleeve is tightened above the long strip-shaped groove.

[0019] The middle part of the fixing groove is cylindrical, and both sides of the fixing groove are hexagonal.

[0020] A first jack is provided at the bottom of the middle part of the fixing groove. The bottom of the monitoring cable in the fixing groove is provided with a second jack. The top of the electrical docking plug is inserted into the first jack and the second jack in sequence;

[0021] The electrical docking plug includes a plug housing. A piston is slidably arranged in the cavity of the plug housing. The piston divides the cavity in the plug housing into a first cavity and a second cavity. A first hydraulic interface is provided on the plug housing corresponding to the first cavity, and a second hydraulic interface is provided on the plug housing corresponding to the second cavity;

[0022] The top of the piston is fixed with an electrical plug contact, and several stepped surfaces are provided on the electrical plug contact. A ring of annular electrical contacts is provided on each stepped surface. The bottom of the plug housing is fixed with a watertight connector.

[0023] The buoyancy adjustment mechanism includes a buoyancy block driving lead screw, a buoyancy block guide rail, and buoyancy blocks. Several buoyancy blocks are sleeved outside the buoyancy block driving lead screw and the buoyancy block guide rail;

[0024] The buoyancy block guide rail is fixed to the bottom of the frame. The buoyancy block driving lead screw is located above the buoyancy block guide rail. The buoyancy block driving lead screw is connected to the output shaft of the buoyancy block lead screw driving motor, and the buoyancy block lead screw driving motor is fixed at one end of the top of the buoyancy block guide rail;

[0025] The buoyancy block is provided with a threaded hole and a track groove. The buoyancy block is in screw drive with the buoyancy block driving lead screw through the threaded hole, and the buoyancy block is slidably connected to the buoyancy block guide rail through the track groove.

[0026] The beneficial effects of the present invention are:

[0027] (1) Through this device, the installation, maintenance, and recovery of pipeline monitoring nodes are realized by the submersible, meeting the real-time monitoring requirements of submarine pipelines;

[0028] (2) The functions of individual monitoring nodes can be updated and maintained according to requirements during the use of this device;

[0029] (3) By setting an electrical docking plug, underwater docking can be achieved through the operation of the submersible;

[0030] (4) By setting a one-way clamping part, the clamping operation can be achieved under the action of an external hydraulic source. After clamping, self-locking is achieved through the self-locking strut, and the clamping state can be maintained for a long time after cutting off the external hydraulic source;

[0031] (5) By setting a buoyancy adjustment mechanism, the problem that the buoyancy of the submersible cannot be adjusted as the node devices in the frame are released when the submersible performs a large number of heavy-load node placement tasks is solved, enabling the submersible to adjust its buoyancy state by itself during underwater operations and maintain a state close to neutral buoyancy. Description of the Drawings

[0032] Figure 1 is the structural schematic diagram of the present application;

[0033] Figure 2 is the structural schematic diagram of the monitoring node release mechanism;

[0034] Figure 3 is the structural schematic diagram of the monitoring node;

[0035] Figure 4 is the structural schematic diagram of the one-way clamping part;

[0036] Figure 5 is a schematic structural view of a cable fixing part;

[0037] Figure 6 is a schematic structural view of a fixing groove;

[0038] Figure 7 is a schematic structural view of an electrical docking plug;

[0039] Figure 8 is a schematic sectional view of an electrical docking plug;

[0040] Figure 9 is a schematic structural view of a monitoring cable docking part;

[0041] Figure 10 is a schematic structural view of a buoyancy adjustment mechanism;

[0042] Figure 11 is a schematic structural view of a buoyancy block.

[0043] In the figure: 1 frame; 2 monitoring node release mechanism; 3 buoyancy adjustment mechanism; 4 submersible docking frame; 5 monitoring node slide rail; 6 monitoring node; 7 monitoring node release lead screw hydraulic motor; 8 monitoring node release lead screw; 9 slide rail support; 10 locking hydraulic cylinder; 11 self-locking support rod; 12 jaw; 13 electronic cabin; 14 electrical docking plug; 15 positive pressure compensator; 16 camera; 17 external hydraulic interface; 18 cable fixing part; 19 node support frame; 20 lead screw threaded hole; 21 helical groove; 22 T-shaped support rod; 23 rubber pad; 24 rotating fixing rod; 25 fixing protrusion; 26 fixing groove; 27 rotating fixing sleeve; 28 swinging screw; 29 first jack; 30 electrical plug contact; 31 first hydraulic interface; 32 second hydraulic interface; 33 watertight connector; 34 first cavity; 35 piston; 36 second cavity; 37 monitoring cable; 38 second jack; 39 buoyancy block drive lead screw; 40 buoyancy block guide rail; 41 buoyancy block; 42 buoyancy block lead screw drive motor; 43 T-shaped handle; 44 hanging ear; 45 threaded hole; 46 track groove. Detailed implementation manners

[0044] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the accompanying drawings.

[0045] In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation manners disclosed below.

[0046] Such as Figure 1As shown in the figure, the underwater pipeline monitoring device of the present invention includes a frame 1. A submersible docking frame 4 is provided at the top of the frame 1, and the submersible docking frame 4 is connected to the bottom of the deep-sea submersible by bolts. A monitoring node release mechanism 2 is provided in the middle of the frame 1, and a buoyancy adjustment mechanism 3 is provided at the bottom of one side of the frame 1. The sequential release of the monitoring nodes is realized through the monitoring node release mechanism 2, so that a plurality of monitoring nodes are clamped and fixed outside the pipeline. During the release process of the monitoring nodes, the weight of the entire monitoring device will change. At this time, the buoyancy of the entire monitoring device is adjusted through the buoyancy adjustment mechanism 4, so that the monitoring device is always in a balanced state in deep water.

[0047] As Figure 1 and Figure 2 shown in the figure, the monitoring node release mechanism 2 includes a plurality of monitoring nodes 6. The plurality of monitoring nodes 6 are all slidably sleeved on the monitoring node slide rail 5. The monitoring node slide rail 5 is arranged along the length direction of the frame 1, and the monitoring node slide rail 5 is fixedly connected to the frame 1. One end of the monitoring node slide rail 5 is inclined downward. A threaded hole is provided in the middle of the monitoring node 6, and the monitoring node 6 is sleeved on the monitoring node release lead screw 8 through the threaded hole, and the threaded hole and the monitoring node release lead screw 8 are in screw drive. The monitoring node release lead screw 8 is connected to the output end of the monitoring node release lead screw hydraulic motor 7. During the operation of the monitoring node release lead screw hydraulic motor 7, the monitoring node release lead screw 8 is driven to rotate. Through the screw drive between the monitoring node release lead screw 8 and the monitoring node 6, and under the guiding action of the monitoring node slide rail 5 at the same time, the movement of the monitoring node 6 along the monitoring node slide rail 5 is realized. When the monitoring node 6 moves to the end of the monitoring node slide rail 5, it slides down along the downward inclined end of the monitoring node slide rail 5 and falls onto the pipeline. In this embodiment, two monitoring node slide rails 5 are provided, and the monitoring node 6 is located between the two monitoring node slide rails 5.

[0048] As Figure 3As shown in the figure, the monitoring node includes a node support frame 19 and two clamping jaws 12 hinged to the bottom of the node support frame. The two clamping jaws 12 are symmetrically arranged. On the two outer sides of the top of the node support frame 19, slide rail brackets 9 are symmetrically provided. The slide rail brackets 9 are slidably sleeved on the outer side of the monitoring node slide rail 5, realizing the sliding connection between the monitoring node and the monitoring node slide rail 5. At the center of the top of the node support frame 19, a cable fixing part 18 is provided. At the bottom of the cable fixing part 18, an electrical docking plug 14 is connected. The monitoring cable 37 is fixed in the cable fixing part 18, and the communication and energy supply between the monitoring cable 37 and the monitoring node are realized through the electrical docking plug 14. At the top of the slide rail bracket 9, a collar and an external hydraulic interface 17 are also provided. Through the external hydraulic interface 17, the hydraulic power on the submersible can be used to drive the locking hydraulic cylinders on each monitoring node, and there is no need to set up hydraulic power components on each monitoring node. A lead screw threaded hole 20 is provided on the collar. The internal thread of the lead screw threaded hole 20 is in spiral connection with the external thread of the monitoring node release lead screw 8. The external hydraulic interface 17 is docked with the hydraulic power component on the submersible. Sensors, an electronic cabin 13 and a positive pressure compensator 15 are also carried on the slide rail bracket 9. Among them, the electronic cabin 13 is used for the communication, control and power supply of the sensors carried by the monitoring node. The positive pressure compensator 15 is used for the positive pressure water isolation compensation of the electrical docking plug and the monitoring cable. A camera 16 is also provided at the top of the positive pressure compensator 15. Through the camera, real-time visual monitoring of the pipelines near the monitoring node can be carried out.

[0049] The top end of the clamping jaw 12 is hinged to the bottom of the node support frame 19. The bottom end of the clamping jaw 12 is pointed, so that the clamping jaw 12 can break the soil when clamping the semi-buried pipeline. Several rubber pads 23 are provided on the inner surface of the clamping jaw 12, and the rubber pads 23 play a role in anti-sliding and auxiliary clamping.

[0050] The pipeline is located between the two clamping jaws. When the clamping jaws rotate inward at the same time, the distance between the two clamping jaws decreases, and the bottom of the clamping jaw 12 drills into the soil, realizing the clamping of the pipeline by the two clamping jaws.

[0051] A one-way clamping part is also connected between the node support frame 19 and the clamping jaw 12. In this embodiment, one-way clamping parts are respectively provided on both sides of the monitoring node, and the two one-way clamping parts are symmetrically arranged. As Figure 4As shown in the figure, the one-way clamping part includes a locking hydraulic cylinder 10 and a self-locking support rod 11. The top of the cylinder body of the locking hydraulic cylinder 10 is hinged to the node support frame 19, and the bottom of the piston of the locking hydraulic cylinder 10 is hinged to the jaw 12. The self-locking support rod 11 is located inside the locking hydraulic cylinder 10. The bottom of the self-locking support rod 11 is hinged to the jaw 12, and a T-shaped support rod 22 is fixedly connected to the top of the self-locking support rod 11. The T-shaped support rod 22 includes a rod body and a T-shaped pin located at the end of the rod body. The T-shaped pin is fixedly connected to the rod body by a threaded connection. The T-shaped pin is stuck outside the helical tooth groove 21 at the lower part of the node support frame 19. At this time, the rotation of the T-shaped support rod 22 is restricted by the helical tooth groove 21, and then the rotation of the top of the self-locking support rod 11 is restricted. A downward locking force is applied to the jaw 12 through the self-locking support rod 11, so that the jaw 12 can only rotate downward and cannot rotate upward in the reverse direction.

[0052] During the operation process, downward forces are respectively applied to the jaws on both sides through the locking hydraulic cylinders 10 on both sides, so that the two jaws 12 rotate downward respectively, realizing the clamping of the pipeline by the jaws. At the same time, the T-shaped support rod 22 at the top of the self-locking support rod 11 rotates in the helical tooth groove. When the jaws clamp the pipeline, the T end of the T-shaped support rod 22 is stuck outside the helical tooth groove 21, and the self-locking support rod 11 applies a downward force to the jaws, realizing the mechanical locking of the jaws; the locking hydraulic cylinder 10 also applies a hydraulic locking force to the jaws 12, so that the jaws 12 can only perform a one-way clamping action.

[0053] As Figure 5 shown, the cable fixing part includes a fixing groove 26 and a rotating fixing rod 24. The fixing groove 26 is located in the middle of the top surface of the node support frame 19. As Figure 6 shown, the middle part of the fixing groove 26 is cylindrical, and both sides of the fixing groove are hexagonal. The shape of the fixing groove 26 fits the shape of the docking interface of the monitoring cable, effectively preventing the axial movement of the monitoring cable. The rotating fixing rod 24 is located above the fixing groove 26. One end of the rotating fixing rod 24 is hinged to the node support frame 19, and a long strip-shaped groove is provided at the other end of the rotating fixing rod 24. When the rotating fixing rod 24 is in the locked state, the swinging screw rod 28 is arranged in the long strip-shaped groove. The bottom of the swinging screw rod 28 is hinged to the node support frame 19, and a rotating fixing sleeve 27 is provided at the upper part of the swinging screw rod 28. The rotating fixing sleeve 27 is located above the long strip-shaped groove. A fixing protrusion 25 is provided in the middle of the bottom surface of the rotating fixing rod 24.

[0054] When the monitoring cable 37 is located in the fixed groove 26, the inner surface of the fixed groove fits against the outer surface of the monitoring cable 37. Rotate the rotary fixing rod 24 so that the fixing protrusion 25 at the bottom of the rotary fixing rod 24 presses against the upper side of the monitoring cable 37. Then, turn the swing screw rod 28 into the long strip groove at one end of the rotary fixing rod 24. Finally, rotate the rotary fixing sleeve 27 along the swing screw rod 28 and move downward along the swing screw rod 28 until the rotary fixing sleeve 27 is pressed tightly above the rotary fixing rod 24. At this time, the monitoring cable 37 can be pressed tightly between the rotary fixing rod 24 and the fixed groove 26.

[0055] In order to insert the top of the electrical docking plug into the monitoring cable 37, a first jack 29 is provided at the bottom middle of the fixed groove 26. As Figure 9 shown, a second jack 38 is provided at the bottom of the monitoring cable. The top of the electrical docking plug is sequentially inserted into the first jack 29 and the second jack 38.

[0056] As Figure 7 and Figure 8 shown, the electrical docking plug includes a plug housing. A piston 35 is provided in the cavity of the plug housing, and the piston 35 can reciprocate up and down in the plug housing. The piston 35 divides the cavity in the plug housing into a first cavity 34 and a second cavity 36. A first hydraulic interface 31 is provided on the plug housing corresponding to the first cavity 34, and a second hydraulic interface 32 is provided on the plug housing corresponding to the second cavity 36. An electrical plug contact 30 is fixed to the top of the piston 35. Five stepped surfaces are provided on the electrical plug contact 30, and a ring of annular electrical contacts is provided on each stepped surface. A watertight connector 33 is fixed to the bottom of the plug housing.

[0057] During the operation of the electrical docking plug, the injection or outflow of hydraulic oil in the first cavity 34 is realized through the first hydraulic interface 31, and the injection or outflow of hydraulic oil in the second cavity 36 is realized through the second hydraulic interface 32. During this process, the piston 35 is pushed to move up and down in the cavity of the plug housing, thereby realizing the lifting of the electrical plug contact. When the monitoring cable is pressed by the cable fixing part against the top of the monitoring node, the electrical plug contact 30 rises and is inserted into the first jack 29 and the second jack 38 in sequence, thereby realizing the electrical connection between the electrical plug contact 30 and the monitoring cable 37. At the same time, the watertight connector 33 at the bottom of the electrical docking plug is connected to the monitoring node 6, and the electronic cabin 13 on the monitoring node conducts communication and energy transfer through the electrical docking plug and the monitoring cable.

[0058] To prevent the electrical contacts from being corroded by seawater before docking, both the first jack 29 and the second jack 38 are filled with silicone grease. During the process of docking the monitoring node and the monitoring cable, as the electrical contact plug rises, the silicone grease in the first jack 29 and the second jack 38 is extruded.

[0059] As Figure 10 and Figure 11 shown, the buoyancy adjustment mechanism includes a buoyancy block driving lead screw 39, a buoyancy block guide rail 40, and buoyancy blocks 41. A plurality of buoyancy blocks 41 are sleeved outside the buoyancy block driving lead screw 9 and the buoyancy block guide rail 40. The buoyancy block guide rail 40 is fixed to the bottom of the frame 1. The buoyancy block driving lead screw 39 is located above the buoyancy block guide rail 40. The end of the buoyancy block driving lead screw 39 is connected to the output shaft of the buoyancy block lead screw driving motor 42. The buoyancy block lead screw driving motor 42 is fixed to one end of the top of the buoyancy block guide rail 40. A threaded hole 45 is provided in the buoyancy block 41, and the buoyancy block 41 is in screw drive with the buoyancy block driving lead screw 39 through the threaded hole 45. At the same time, an orbital groove 46 is also provided in the buoyancy block 41, and the buoyancy block 41 is slidably connected to the buoyancy block guide rail 40 through the orbital groove 46. A T-shaped handle 43 and a hanging ear 44 are further provided on the buoyancy block 41.

[0060] In this embodiment, the buoyancy block guide rail 40 includes a vertical support plate and a horizontal cross beam fixed to the top of the vertical support plate. The front end of the buoyancy block driving lead screw 39 has no thread, and the front end of the buoyancy block guide rail 40 has no cross beam, so as to facilitate the manipulator to remove the buoyancy block.

[0061] When the buoyancy block lead screw driving motor 42 operates, it drives the buoyancy block driving lead screw 39 to rotate. Through the screw drive between the buoyancy block driving lead screw 39 and the buoyancy block 41, and under the limiting action of the buoyancy block guide rail 40 at the same time, the buoyancy block 41 makes a reciprocating movement along the buoyancy block guide rail 40.

[0062] Before the submersible carrying this device starts to work, it is in a neutral buoyancy state. As the monitoring nodes are deployed, the weight of the entire submersible becomes lighter and the positive buoyancy becomes larger. When the positive buoyancy of this device reaches the dynamic control threshold, the buoyancy adjustment mechanism starts to act, starts the buoyancy block lead screw driving motor 42, and pushes the buoyancy blocks 41 out of the frame in sequence. The submersible manipulator takes out the buoyancy blocks 41 through the T-shaped handle 43 and fixes them in the tool bar with the help of the hanging ears 44, realizing the reduction of buoyancy. On the contrary, the resistance can be increased. With the help of this buoyancy adjustment mechanism, the submersible can achieve autonomous buoyancy adjustment underwater, avoid repeated entry and exit of water, and improve work efficiency.

[0063] The working principle of the monitoring device is as described below. When it is necessary to install the monitoring device outside the pipeline, first, the deep submergence vehicle carries the device to above the pipeline. The monitoring node releases the lead screw hydraulic motor 7 to act, and pushes out a monitoring node 6. The monitoring node docks with the pipeline, and the manipulator on the submergence vehicle connects the external hydraulic plug to the monitoring node, thereby controlling the locking hydraulic cylinder 10 on the monitoring node to act and driving the two jaws 12 to clamp and fix. Then, the submergence vehicle erects the monitoring cable and places the docking interface of the monitoring cable into the fixing groove 26 of the cable fixing part. Next, the manipulator of the submergence vehicle operates the rotating fixing rod 24 and the rotating fixing sleeve 27 to lock and limit the monitoring cable to prevent the monitoring cable from detaching from the monitoring node. Finally, through the flow of hydraulic oil in the electrical docking plug, the electrical plug contacts 30 at the top of the electrical docking plug are driven to be inserted into the fixing groove and the monitoring cable 37 in sequence, realizing the electrical connection between the monitoring node 6 and the monitoring cable 37. Real-time monitoring of the pipeline is achieved through the sensors and cameras carried on the monitoring node, as well as the monitoring cable.

[0064] When it is necessary to repair or recover the monitoring node, first, remove the hydraulic locking force in the locking hydraulic cylinder, and remove the T-shaped groove from one end of the rod body. At this time, the one-way locking force applied to the jaws is removed, and the jaws loosen the pipeline. The bottom of the monitoring node slide rail 5 is inserted into the monitoring slide rail 9 of the monitoring node, and the submergence vehicle drives the monitoring node slide rail 5 to rise, thereby removing the monitoring node 6 from the pipeline, thus realizing the recovery or repair of the monitoring node. The repaired monitoring node can be clamped and fixed on the pipeline again through this device.

[0065] The underwater pipeline monitoring device provided by the present invention has been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention. The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown in this article, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An underwater pipeline monitoring device, comprising a frame, characterized in that, It also includes a monitoring release mechanism and a buoyancy adjustment mechanism arranged on the frame, wherein: The monitoring node release mechanism includes a plurality of monitoring nodes slidably arranged along the monitoring node slide rail; the monitoring node includes a node support frame and two clamping claws hinged at the bottom of the node support frame, a cable fixing part for locking the monitoring cable is provided at the top of the node support frame, the two clamping claws are tightly clamped to the outside of the pipeline, and an electrical connection plug is provided at the bottom of the cable fixing part; A one-way clamping portion is also connected between the node support frame and the clamping claw; The one-way clamping part includes a locking hydraulic cylinder and a self-locking support rod located inside the locking hydraulic cylinder, the top of the cylinder body of the locking hydraulic cylinder is hinged to the node support frame, and the bottom of the piston of the locking hydraulic cylinder is hinged to the clamping claw; The bottom of the self-locking support rod is hinged with the clamping claw, and the top of the self-locking support rod is fixedly connected with a T-shaped support rod, the T-shaped support rod includes a rod body and a T-shaped pin connected to the end of the rod body, and the T-shaped pin is clamped on the outer side of the oblique tooth groove on the outer side of the lower part of the node support frame; The cable fixing part includes a fixing groove and a rotating fixing rod, the fixing groove is located in the middle of the top surface of the node support frame, and the docking interface of the monitoring cable is arranged in the fixing groove; A first jack is provided at the bottom of the middle of the fixing groove, a second jack is provided at the bottom of the monitoring cable in the fixing groove, and the top of the electrical appliance docking plug is inserted into the first jack and the second jack in sequence; The electrical appliance docking plug comprises a plug housing, a piston is slidably arranged in the cavity of the plug housing, the piston divides the cavity in the plug housing into a first cavity and a second cavity, a first hydraulic interface is arranged on the plug housing corresponding to the first cavity, and a second hydraulic interface is arranged on the plug housing corresponding to the second cavity; An electric plug contact is fixed on the top of the piston, a plurality of stepped surfaces are arranged on the electric plug contact, each stepped surface is provided with a circle of annular electric contacts, and a watertight connector is fixed on the bottom of the plug housing.

2. The underwater pipeline monitoring device according to claim 1, characterized in that, The monitoring node release mechanism also includes a monitoring node release screw and a monitoring node release screw hydraulic motor, and the output shaft of the monitoring node release screw hydraulic motor is fixedly connected to the monitoring node release screw; One end of the monitoring node slide rail is tilted downward; A threaded hole is provided on the top of the monitoring node, and the threaded hole is spirally connected to the monitoring node release screw.

3. The underwater pipeline monitoring device according to claim 1, characterized in that, The top two outer sides of the node support rack are symmetrically provided with slide rail brackets, and the slide rail brackets are slidably sleeved on the outer sides of the monitoring node slide rails; A cable fixing portion is provided at the top center of the node support frame, and a collar and an external hydraulic interface are also provided at the top of the slide rail bracket. A lead screw threaded hole is provided on the collar, and the internal thread of the lead screw threaded hole is spirally connected to the external thread of the monitoring node release lead screw.

4. The underwater pipeline monitoring device according to claim 1, characterized in that, The top end of the clamping claw is hinged to the bottom of the node support frame, the bottom end of the clamping claw is pointed, and the inner surface of the clamping claw is provided with a plurality of rubber pads.

5. The underwater pipeline monitoring device according to claim 1, characterized in that, The rod body and the T-shaped pin are fixedly connected by threads.

6. The underwater pipeline monitoring device according to claim 1, characterized in that, The rotating fixing rod is located above the fixing groove, one end of the rotating fixing rod is hinged to the node support frame, the other end of the rotating fixing rod is provided with a long strip groove, the swing screw is arranged in the long strip groove, and the bottom surface of the rotating fixing rod is provided with a fixing protrusion, which is located in the fixing groove; The bottom of the swinging screw is hinged to the node support frame, and a rotating fixing sleeve is provided on the upper part of the swinging screw, and the rotating fixing sleeve is screwed above the long strip-shaped groove.

7. The underwater pipeline monitoring device according to claim 6, characterized in that, The middle part of the fixed groove is cylindrical, and both sides of the fixed groove are hexagonal.

8. The underwater pipeline monitoring device according to claim 1, characterized in that, The buoyancy adjustment mechanism includes a buoyancy block driving lead screw, a buoyancy block guide rail and a buoyancy block. Several buoyancy blocks are sleeved outside the buoyancy block driving lead screw and the buoyancy block guide rail; The buoyancy block guide rail is fixed to the bottom of the frame, the buoyancy block driving lead screw is located above the buoyancy block guide rail, the buoyancy block driving lead screw is connected to the output shaft of the buoyancy block lead screw driving motor, and the buoyancy block lead screw driving motor is fixed at one end of the top of the buoyancy block guide rail; The buoyancy block is provided with a threaded hole and an orbital groove. The buoyancy block is in screw drive with the buoyancy block driving lead screw through the threaded hole, and the buoyancy block is slidably connected to the buoyancy block guide rail through the orbital groove.

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