Intelligent recovery device and recovery method for ocean bottom seismograph

Abstract

The invention discloses an intelligent recovery device and a recovery method for an ocean bottom seismograph, which are used for recovering the ocean bottom seismograph and belong to the technical field of ocean exploration. The device comprises a ship body and a rope winding machine arranged on the ship body, the rope winding machine is connected with a first rope body and a second rope body, and the end parts of the first rope body and the second rope body are connected with hook bodies; and the end part of the first rope body and the end part of the second rope body are respectively connected to different positions of the hook body. The device can recycle the seismograph device arranged on the seabed, and effectively solves the problems that the seabed seismograph is difficult to recycle, and the recycling device is expensive and complex.

Description

Technical Field

[0001] The invention belongs to the technical field of ocean exploration, and in particular relates to an intelligent recovery device and a recovery method for a seafloor seismograph. Background Art

[0002] Seafloor seismic research is of great significance for understanding the internal structure of the earth, plate tectonics, laws of seismic activity, and marine geological disasters. Seafloor seismographs can record the seismic activity occurring on the seafloor, providing rich data for science. The recovery of traditional seismographs is often complicated, usually requiring the cooperation of large ships and professional equipment. The operation process is cumbersome and consumes a lot of time and resources. In particular, the complex and changeable seafloor conditions will interfere with the recovery process, increasing the difficulty and risk of recovery.

[0003] Application number WOFR22050498 discloses a system for recovering a seafloor seismometer intended to be arranged on a ship. The system comprises a receiving device having an at least partially rigid structure, which together with the hull defines a guide obstacle for guiding the seafloor seismometer to the area of ​​the receiving device. A mobile system enables the receiving device to be moved between a low position in which the receiving device is at least partially immersed and a high position enabling an operator or equipment present on board the ship to recover the seafloor seismometer. Carried by the receiving device. The invention also relates to a ship having the system and a corresponding recovery method. This patent still has room for improvement.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides an intelligent recovery device and recovery method for seafloor seismographs, which are used for recovering seafloor seismographs. The device can protect the seismograph body during the recovery process, avoid collision or damage to the seismograph during the recovery process, and effectively solve the problems of difficult recovery of seafloor seismographs and expensive and complicated recovery devices.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: An intelligent recovery device for a seafloor seismograph comprises a hull and a rope reel mounted on the hull, wherein a first rope body and a second rope body are connected to the rope reel, the ends of the first rope body and the second rope body are connected to a hook body, and the first rope body end and the second rope body end are respectively connected to different positions of the hook body.

[0007] According to one embodiment of the present invention, the horizontal height of the connection position between the first rope body and the hook body is higher than the horizontal height of the connection position between the second rope body and the hook body, and the connection position between the second rope body and the hook body is on the side arc surface of the hook body. When the hook body is placed near the seismograph, the first rope body and the second rope body are controlled by the rope winding machine to pull the hook body to control the angle of the hook body, thereby controlling the hooking and releasing of the hook body.

[0008] According to one embodiment of the present invention, a seismograph cover is sleeved on the outer side of the hook body, and the seismograph cover is a columnar sleeve structure with through holes at both ends. A plate body is fixedly provided in the middle of the seismograph cover body, and a first sub-channel and a second sub-channel are provided in the center of the plate body, and the first sub-channel and the second sub-channel are both through holes, and the diameter of the through hole of the first sub-channel is smaller than the diameter of the through hole of the second sub-channel. The first rope body passes through the first sub-channel, and the second rope body passes through the second sub-channel. A cover is bolted to the seismograph cover body, and a first channel and a second channel are provided in the center of the cover, and the first channel and the second channel are both through holes. The first rope body passes through the first channel and the first sub-channel, and the second rope body passes through the second channel and the second sub-channel. The two rope bodies are connected with a hook body under the two sub-channels, so that the hook body is always located under the plate body in the cover body, so as to prevent the hook body from falling off the cover body, and also to prevent the components such as the controller inside the cover body from being affected by the hook body.

[0009] After the seismograph is found, the recovery device is controlled to drop the seismograph cover onto the seismograph so that the seismograph is located inside the seismograph cover, and then the hook is controlled to hook up the seismograph. The setting of the seismograph cover can prevent the seismograph from touching the seabed reefs or being hit by large schools of fish when it is pulled out of the sea. At the same time, when the seismograph is pulled from the seabed to the sea surface, on the one hand, due to the continuous and large changes in the flow rate of the water body, it will cause continuous water flow impact on the seismograph, and the seismograph may shake violently. The design of the cover can reduce the amplitude of the shaking of the seismograph caused by the impact of the water flow, and avoid damage to the internal components of the seismograph; on the other hand, since the ultrasonic sensor detects the target position by generating a signal, the design of the cover can make the signal concentrate in one direction, and at the same time, it can also avoid interference from other electromagnetic signals to a certain extent. In addition, the cover can also isolate noise to avoid the influence of noise on the work of the ultrasonic sensor.

[0010] Due to the uncertainty of the location of the seismograph on the seabed, the seismograph is very likely to be located in a small space such as a gap between reefs. Since the hook body and the cover body are not integrally connected, the rope body can lower the hook body alone. After hooking the seismograph, it will be pulled into the cover body to prevent the recovery device from getting stuck on reefs, etc., affecting the recovery process.

[0011] According to one embodiment of the present invention, a plate body extends outward from the outside of the seismograph cover, an electronic push rod is fixedly provided under the plate body, a turbine is fixedly connected to the end of the electronic push rod, a controller is provided in the seismograph cover, and the controller is connected to an ultrasonic sensor.

[0012] On the one hand, the turbine can control the recovery device to move independently and reach the vicinity of the designated seafloor seismometer, and detect the location of the seismometer through sensors; on the other hand, the seismometer may be deeply buried by seafloor sand and gravel, or there may be large sand and gravel attached to the seismometer. When the turbine rotates at high speed, it can drive the movement of nearby water flow, thereby washing away the sand and gravel near the seismometer, so that the seismometer is exposed alone on the seabed, which is convenient for recovery. It can also expel marine life near the seismometer and remove biological eggs that may be attached to the seismometer from the seismometer, protecting the sustainable development of the marine biological ecology.

[0013] At the same time, due to the design of the electronic push rod, the end of the electronic push rod is fixedly connected to the turbine. The controller can control the lifting and lowering of the turbine by controlling the extension and retraction of the electronic push rod, so that the turbine can move up and down relative to the cover. The turbine structure that moves up and down can adjust the sliding height position of the cover relative to the turbine according to the cover's downward movement speed during the process of the cover falling to the seabed, and then adjust the cover's falling speed. By controlling the cover's falling speed, the probability of the seismograph position offset from the target after the cover falls and the impact of the cover falling are reduced, especially the damage to the seismograph caused by the falling impact and the probability and range of the resuspension of the seabed sediment caused by the impact. By controlling the extension and retraction of the electronic push rod at different positions, the controller can autonomously adjust the balance state of the cover, especially when the cover falls on the uneven seabed, and can also control the position height of the turbine to control the impact force of the water flow driven by the turbine when the turbine rotates.

[0014] According to one embodiment of the present invention, a buffer body is sleeved on the first rope body and the second rope body, a first through hole and a second through hole are provided in the center of the buffer body, and the first rope body and the second rope body pass through the first through hole and the second through hole respectively.

[0015] The setting of the first through hole and the second through hole can separate the first rope body and the second rope body to prevent the two rope bodies from being entangled with each other, and the buffer body is arranged above the seismograph cover. When encountering a reef during the process of pulling the seismograph upward, it will first hit the buffer body, further preventing the cover or the seismograph from directly hitting the reef, thereby ensuring that the seismograph instrument will not be damaged during the recovery process.

[0016] Since the seismograph is located deep in the seabed, in order for the recovery device to reach the seismograph, the rope must be released very long. When the recovery device needs to be retrieved, in order to improve efficiency and save time, the rotation speed of the rope reel is often very fast. When the seismograph recovery device is pulled upward by the rope reel, when the rope breaks at the connection of the hook, etc., the excessive recovery speed of the rope will cause the rope and the tail to swing violently and uncontrollably. This swing is often very strong and the swing position cannot be predicted, which will pose a great threat to personnel safety. The design of the buffer body can limit the violent swing of the tail when the rope breaks, and also limit the swing of the rope body. The buffer body can be limited from the rope body by tying a knot at the rope position at the bottom of the buffer body or by setting the buffer body and the rope body as an integrated body, so as to safely complete the seismograph recovery work. And when the rope body is reeled by the rope reel under violent swinging, the rope body is very likely to be entangled on the outside of the rope reel, and even cause the rope body to break. The buffer body can continuously give the rope body downward pulling force to limit the lateral displacement of the rope body and ensure that the rope body track will not leave the rope reel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 A schematic diagram of a seismograph recovery device according to the present invention; Figure 2 It is a schematic diagram of the underwater recovery device of the present invention; Figure 3 It is a schematic diagram of the buffer body scheme of the present invention; Figure 4 This is a schematic diagram of a seismograph cover solution of the present invention; Figure 5 It is a cross-sectional schematic diagram of the seismograph cover of the present invention; Figure 6 It is a schematic diagram of the hook body scheme of the present invention; Figure 7 Schematic diagram of the electronic push rod of the present invention.

[0019] Figure numbers: 10-hull; 101-first rope body; 102-second rope body; 103-rope winder; 104-buffer body; 105-hook body; 106-first through hole; 107-second through hole; 110-first channel; 111-second channel; 112-first secondary channel; 113-second secondary channel; 20-seismograph cover; 201-cover; 202-battery; 203-controller; 204-ultrasonic sensor; 205-turbine; 206-electronic push rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0022] Embodiment 1 See attached Figure 1-Figure 7 As shown, an intelligent recovery device for a seafloor seismometer includes a hull 10 and a rope reel 103 installed on the hull 10, a first rope body 101 and a second rope body 102 are connected to the rope reel 103, the ends of the first rope body 101 and the second rope body 102 are connected to a hook body 105, and the ends of the first rope body 101 and the second rope body 102 are respectively connected to different positions of the hook body 105.

[0023] The horizontal height of the connection position between the first rope body 101 and the hook body 105 is higher than the horizontal height of the connection position between the second rope body 102 and the hook body 105, and the connection position between the second rope body 102 and the hook body 105 is on the side arc surface of the hook body 105. When the hook body 105 is placed near the seismograph, the first rope body 101 and the second rope body 102 are controlled by the rope winding machine 103 to pull the hook body 105 to control the angle of the hook body 105, thereby controlling the hooking and releasing of the hook body 105.

[0024] The seismograph cover 20 is sleeved on the outside of the hook body 105. The seismograph cover 20 is a columnar sleeve structure with through holes at both ends. A plate body is fixedly provided in the middle of the seismograph cover 20. The center of the plate body is provided with a first auxiliary channel 112 and a second auxiliary channel 113. The first auxiliary channel 112 and the second auxiliary channel 113 are both through holes. The through hole diameter of the first auxiliary channel 112 is smaller than the through hole diameter of the second auxiliary channel 113. The first rope body 101 passes through the first auxiliary channel 112, and the second rope body 102 passes through the second auxiliary channel 113. A cover 201 is bolted to the seismograph cover 20. The center of the cover 201 is provided with a first channel 110 and a second channel 111. The first channel 110 and the second channel 111 are both through holes. The first rope body 101 passes through the first channel 110 and the first sub-channel 112, and the second rope body 102 passes through the second channel 111 and the second sub-channel 113. The two rope bodies are connected with a hook body 105 under the two sub-channels, so that the hook body 105 is always located under the plate body in the cover body to prevent the hook body 105 from falling off the cover body and to prevent the components such as the controller 203 inside the cover body from being affected by the hook body 105.

[0025] After the seismograph is found, the recovery device is controlled to drop the seismograph cover 20 onto the seismograph so that the seismograph is located inside the seismograph cover 20, and then the hook body 105 is controlled to hook up the seismograph. The setting of the seismograph cover 20 can prevent the seismograph from touching the seabed reefs or being hit by large fish schools in the process of pulling the seismograph out of the sea. At the same time, when the seismograph is pulled from the seabed to the sea surface, on the one hand, due to the continuous and large changes in the flow rate of the water body, the seismograph will be continuously impacted by the water flow, and the seismograph may shake violently. The design of the cover can reduce the amplitude of the shaking of the seismograph caused by the impact of the water flow, and avoid damage to the internal components of the seismograph; on the other hand, since the ultrasonic sensor 204 detects the target position by generating a signal, the design of the cover can make the signal concentrate in one direction, and can also avoid interference from other electromagnetic signals to a certain extent, and the cover can also isolate noise to avoid the influence of noise on the work of the ultrasonic sensor 204.

[0026] And because of the uncertainty of the location of the seismograph on the seabed, the seismograph is very likely to be located in a small space such as a gap between reefs. Since the hook body 105 and the cover body are not integrally connected, the rope body can lower the hook body 105 alone. After hooking the seismograph, it is pulled into the cover body to prevent the recovery device from getting stuck on reefs, etc., affecting the recovery process.

[0027] A plate extends outward from the outer side of the seismograph cover 20, an electronic push rod 206 is fixedly arranged under the plate, a turbine 205 is fixedly connected to the end of the electronic push rod 206, a controller is arranged in the seismograph cover, and an ultrasonic sensor is connected to the controller.

[0028] On the one hand, the turbine can control the recovery device to move independently and reach the vicinity of the designated seafloor seismometer, and detect the location of the seismometer through sensors; on the other hand, the seismometer may be deeply buried by seafloor sand and gravel, or there may be large sand and gravel attached to the seismometer. When the turbine rotates at high speed, it can drive the movement of nearby water flow, thereby washing away the sand and gravel near the seismometer, so that the seismometer is exposed alone on the seabed, which is convenient for recovery. It can also expel marine life near the seismometer and remove biological eggs that may be attached to the seismometer from the seismometer, protecting the sustainable development of the marine biological ecology.

[0029] At the same time, due to the design of the electronic push rod 206, the end of the electronic push rod 206 is fixedly connected to the turbine 205, and the controller 203 can control the lifting and lowering of the turbine 205 by controlling the extension and contraction of the electronic push rod 206, so that the turbine 205 can move up and down relative to the cover body. The turbine structure that moves up and down can adjust the sliding height position of the cover body relative to the turbine 205 according to the cover body's downward movement speed during the process of the cover body falling down to the seabed, and then adjust the cover body's falling speed. By controlling the cover body's falling speed, the probability of the seismograph position offset from the target after the cover body falls and the cover body's falling impact are reduced, especially the damage to the seismograph caused by the falling impact and the probability and range of the resuspension of the seabed sediment caused by the impact. By controlling the extension and contraction amount of the electronic push rod 206 at different positions, the controller 203 can autonomously adjust the balance state of the cover body, especially when the cover body falls on the uneven seabed, and the impact force of the water flow driven by the turbine 205 when the turbine 205 rotates can also be controlled by controlling the position height of the turbine 205.

[0030] The first rope body 101 and the second rope body 102 are sleeved with a buffer body 104 . The center of the buffer body 104 is provided with a first through hole 106 and a second through hole 107 . The first rope body 101 and the second rope body 102 pass through the first through hole 106 and the second through hole 107 respectively.

[0031] The first through hole 106 and the second through hole 107 can separate the first rope body 101 and the second rope body 102 to prevent the two rope bodies from being entangled with each other, and the buffer body 104 is arranged above the seismograph cover 20. When encountering a reef during the process of pulling the seismograph upward, it will first hit the buffer body 104, further preventing the cover or the seismograph from directly hitting the reef, thereby ensuring that the seismograph instrument will not be damaged during the recovery process. Since the seismograph is located deep in the seabed, in order for the recovery device to reach the seismograph, the rope must be released very long. When the recovery device needs to be retracted, in order to improve efficiency and save time, the rotation speed of the rope reel 103 is often very fast. When the seismograph recovery device is pulled upward by the rope reel 103, when the rope breaks at the connection between the hook body 105 and the like, the excessively fast recovery rope speed will cause the rope body and the rope tail to swing violently and uncontrollably. This swing is often very strong and the swing position cannot be predicted, which will pose a great threat to personnel safety. The design of the buffer body 104 can limit the violent swing of the rope tail when the rope body breaks, and also limit the swing of the rope body. The buffer body 104 can be limited from the rope body by tying a knot at the rope position at the bottom end of the buffer body 104 or by integrating the buffer body 104 with the rope body, thereby safely completing the seismograph recovery work. When the rope is wound up by the rope winding machine 103 under violent swinging, the rope is very likely to be entangled on the outside of the rope winding machine 103, and even cause the rope to break. The buffer body 104 can continuously apply downward pulling force to the rope body to limit the lateral displacement of the rope body and ensure that the rope track will not leave the rope winding machine 103.

[0032] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any form. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention. This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. An intelligent recovery device for a seafloor seismograph, comprising a hull (10) and a rope reel (103) mounted on the hull (10), Features: The rope winding machine (103) is connected to a first rope body (101) and a second rope body (102); ends of the first rope body (101) and the second rope body (102) are connected to a hook body (105); the ends of the first rope body (101) and the second rope body (102) are respectively connected to different positions of the hook body (105).

2. The intelligent recovery device for a seafloor seismograph according to claim 1, characterized in that: The horizontal height of the connection position between the first rope body (101) and the hook body (105) is higher than the horizontal height of the connection position between the second rope body (102) and the hook body (105); the connection position between the second rope body (102) and the hook body (105) is on the side arc surface of the hook body (105).

3. The intelligent recovery device for a seafloor seismograph according to claim 1, characterized in that: A seismograph cover (20) is sleeved on the outside of the hook body (105); the seismograph cover (20) is a columnar sleeve structure with through holes at both ends; a plate is fixedly provided in the middle of the seismograph cover (20); a first auxiliary channel (112) and a second auxiliary channel (113) are provided at the center of the plate.

4. The intelligent recovery device for a seafloor seismograph according to claim 3, characterized in that: The first auxiliary channel (112) and the second auxiliary channel (113) are both through holes, and the diameter of the through hole of the first auxiliary channel (112) is smaller than the diameter of the through hole of the second auxiliary channel (113).

5. The intelligent recovery device for seafloor seismograph according to claim 4, characterized in that: The first cable body (101) passes through the first secondary channel (112), and the second cable body (102) passes through the second secondary channel (113).

6. The intelligent recovery device for a seafloor seismograph according to claim 3, characterized in that: A plate body extends outwardly from the outer side of the seismograph cover (20), an electronic push rod (206) is fixedly arranged under the plate body, and a turbine (205) is fixedly connected to the end of the electronic push rod (206).

7. The intelligent recovery device for a seafloor seismograph according to claim 3, characterized in that: A cover (201) is bolted to the seismograph cover (20), a first channel (110) and a second channel (111) are provided at the center of the cover (201), and both the first channel (110) and the second channel (111) are through holes.

8. The intelligent recovery device for a seafloor seismograph according to claim 1, characterized in that: A buffer body (104) is sleeved on the first rope body (101) and the second rope body (102), and a first through hole (106) and a second through hole (107) are provided at the center of the buffer body (104).

9. The intelligent recovery device for a seafloor seismograph according to claim 8, characterized in that: The first rope body (101) and the second rope body (102) pass through the first through hole (106) and the second through hole (107) respectively.

10. A method for recovering a seafloor seismograph, according to the intelligent recovery device for a seafloor seismograph according to any one of claims 1 to 9, characterized in that: The hook body (105) is used to hook the seismometer away from the seabed, and the seismometer is pulled out of the water surface through the first rope body (101) and the second rope body (102) to complete recovery.

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