CN114264986A - Near seafloor magnetic gradient measurement method - Google Patents
Near seafloor magnetic gradient measurement method Download PDFInfo
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- CN114264986A CN114264986A CN202111367720.8A CN202111367720A CN114264986A CN 114264986 A CN114264986 A CN 114264986A CN 202111367720 A CN202111367720 A CN 202111367720A CN 114264986 A CN114264986 A CN 114264986A
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- 238000005259 measurement Methods 0.000 claims abstract description 27
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- 230000009471 action Effects 0.000 claims description 14
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- 239000010720 hydraulic oil Substances 0.000 claims description 8
- 239000002775 capsule Substances 0.000 claims description 6
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- 210000001503 joint Anatomy 0.000 claims description 6
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Abstract
The invention relates to the field of marine magnetic measurement, in particular to a method for measuring the magnetic gradient of an offshore bottom. S1, mounting a near-seabed magnetic gradient measuring device on a submersible vehicle; s2, releasing the primary sensor; s3, releasing the secondary sensor; and S4, repeating the step S3, and sequentially releasing the subsequent sensors, thereby realizing the magnetic gradient measurement of each series sensor. The release and recovery of a plurality of sensors connected in series are realized, the interference of the underwater vehicle to the sensors is greatly reduced, the gradient measurement of the plurality of sensors connected in series is realized, and the accuracy of the offshore bottom magnetic gradient measurement is improved.
Description
Technical Field
The invention relates to the field of marine magnetic measurement, in particular to a method for measuring the magnetic gradient of an offshore bottom.
Background
The magnetic gradient measurement method is characterized in that the change rate of a magnetic field in space is measured to be magnetic gradient measurement, vertical gradient measurement and horizontal gradient measurement are applied in production practice, and magnetic gradient measurement is generally carried out in a mode of connecting a plurality of probes in series. The marine magnetic measurement mostly adopts the on-board towed measurement, and in order to reduce the interference of hull equipment to magnetic equipment, the length of towing cable is 3-6 times of the ship length generally.
At present, the offshore bottom magnetic measurement mainly adopts two measurement methods, namely a fixed-point type measurement method and an aerial type measurement method, wherein the fixed-point type measurement method is mainly used for observing a submerged buoy or a lander by magnetic force day-to-day variation, and the aerial type measurement method is carried out by adopting a way of carrying an aerial device. However, the underwater sailing type magnetic force measurement mostly adopts a fixed installation mode of a submersible vehicle, for example, in a submersible dragon series submersible vehicle, a measurement probe is installed at the tail part of the submersible vehicle. The mode is close to the submersible vehicle relative to the towing type sensor, the submersible vehicle has large interference on the sensor during measurement, and the existing underwater winch cannot realize release and recovery of multiple sensors, so that gradient measurement of multiple probes in series cannot be realized.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method for measuring the magnetic gradient of the offshore bottom, which realizes the release and recovery of a plurality of sensors connected in series, greatly reduces the interference of a submarine vehicle on the sensors, realizes the gradient measurement of the plurality of sensors connected in series and improves the precision of the magnetic gradient measurement of the offshore bottom.
The technical scheme of the invention is as follows: a method of offshore subsea magnetic gradient measurement, comprising the steps of:
s1, installing a near-seabed magnetic gradient measuring device on a submersible vehicle:
the offshore bottom magnetic gradient measuring device comprises a frame, a hydraulic cable car and a sensor releasing mechanism, wherein the hydraulic cable car and the sensor releasing mechanism are both arranged on the frame, the top of the frame is fixed with the underwater vehicle, and the hydraulic cable car and the sensor releasing mechanism are connected through an oil cable;
the sensor release mechanism comprises a stopper, a sensor release cabin, a sensor push-out hydraulic cylinder and a release cabin lock, wherein the sensor release cabin is cylindrical and is fixed on a frame, the front end of the sensor release cabin is a sensor release end, a plurality of sensors which are arranged along the axial direction are arranged in the sensor release cabin, the sensor close to the sensor release end is a first-level sensor, the subsequent sensors are a second-level sensor and a third-level sensor … … n-level sensor in sequence, at least two cable penetrating rings are fixed on the surface of the top of each sensor at intervals, an oil cable penetrates through the cable penetrating rings on the tops of the sensors in sequence, a limiting block is fixed at the tail end of the oil cable, and the size of the limiting block is larger than the ring aperture of the cable penetrating rings;
the top surface of the sensor release cabin is provided with strip-shaped holes along the axial direction, the cable penetrating rings are all positioned in the strip-shaped holes, the lower parts of the cable penetrating rings slide in the strip-shaped holes, a sensor push-out hydraulic cylinder is fixed on the outer wall of the sensor release cabin fixed at the top end of the sensor, the cylinder body of the sensor push-out hydraulic cylinder is fixedly connected with the outside of the sensor release cabin, the piston rod of the sensor push-out hydraulic cylinder faces the n-level sensor, one end of the piston rod is connected with the cylinder body of the sensor push-out hydraulic cylinder, the other end of the piston rod is fixed with a push rod, the push rod is positioned at the rear side of the cable penetrating ring fixed at the top of the n-level sensor,
the oil cable is fixedly provided with n-1 limiters, each limiter corresponds to the second-level sensor to the n-level sensor one by one, each limiter comprises a locking part, a lock pin and a limiter main body, the limiter main body is cylindrical, two ends of the limiter main body are fixedly connected with the locking parts respectively, and the lock pins are arranged in the limiter main body;
the stopper main body comprises a cylindrical fixed sleeve, the two axial ends of the fixed sleeve are respectively fixed with a threaded joint, meanwhile, the end faces of the two axial sides of the fixed sleeve are respectively provided with a plurality of threaded holes II at intervals, and the size of the fixed sleeve is smaller than the ring aperture of the cable penetrating ring;
the center of the fixed sleeve is provided with a through hole, two ends of the through hole are respectively communicated with the threaded connector, a plurality of lock pin through holes are arranged in the fixed sleeve at intervals along the radial direction of the fixed sleeve, the lock pins are arranged in the lock pin through holes in a sliding manner, one end of each lock pin through hole is communicated with the through hole, the other end of each lock pin through hole is communicated with the opening of the annular outer side wall of the fixed sleeve, when the end part of each lock pin extends out of the lock pin through hole and is higher than the outer side wall of the fixed sleeve, the size of the fixed sleeve with the extending lock pins is larger than the pore diameter of the cable penetrating ring;
s2, releasing a first-level sensor:
the release cabin lock is opened, the sensor pushes out of the hydraulic cylinder to act, the push rod pushes the sensor to move towards the sensor release end of the sensor release cabin, when the first-level sensor is pushed out of the sensor release cabin, the release cabin lock is closed, the sensor pushes out of the hydraulic cylinder to stop acting, and other sensors are blocked in the cabin;
s3, releasing the secondary sensor:
the first-stage sensor continuously descends under the action of gravity and falls to a position near the sea bottom for magnetic gradient measurement, the first-stage sensor can pull the oil cable through the cable penetrating ring while descending, so that the hydraulic winch is in a continuous cable releasing state, when the limiter corresponding to the second-stage sensor moves to a position between the two cable penetrating rings fixed at the top of the second-stage sensor, the limiter works to increase the oil pressure in the limiter, under the pushing action of the oil pressure, the lock pin in the limiter extends out of the fixing sleeve, so that the external size of the fixing sleeve is increased, and when the oil cable drives the limiter to move to be in contact with the cable penetrating ring fixedly connected with the second-stage sensor, the limiter pushes the cable penetrating ring and the second-stage sensor fixedly connected with the cable penetrating ring to a sensor releasing end under the pulling action of the cable until the second-stage sensor is pushed out of the sensor releasing cabin;
s4, repeating the step S3, and sequentially releasing the following sensors:
under the action of gravity of a plurality of sensors connected in series, the hydraulic winch continuously releases the cable, then a plurality of sensors leave the sensor release cabin along with the oil cable through corresponding limiters, the release of the plurality of sensors connected in series on the seabed is realized, the positions of the sensors at all levels on the oil cable are limited through the limiters, and the magnetic gradient measurement of the sensors connected in series is realized.
In the invention, the hydraulic cable car and the sensor release cabin are both positioned at the front end of the frame, the rear end of the frame is provided with two guide pulleys, and the oil cable on the hydraulic cable car is connected with the sensor release cabin through the two guide pulleys respectively.
The sensor release end is the loudspeaker form, and release cabin lock is the shaft-like, and its one end is connected with the pneumatic cylinder, and the other end stretches into sensor release under-deck, has played the effect of blockking to the sensor in the sensor release under-deck.
And a push plate is fixed on one side of the lock pin facing the through hole and directly contacts with the hydraulic oil in the through hole. The outer side of the lock pin is wound with a spring, one end of the spring is fixedly connected with the push plate, the lock pin is arranged in the lock pin through hole in a sliding mode, and the size of an opening in the annular outer side wall of the fixed sleeve is larger than the diameter of the lock pin and smaller than the diameter of the spring.
The locking part at the axial end part of the fixing sleeve is formed by combining two locking blocks. Be equipped with several screw hole I on the latch segment, connecting thread passes screw hole II of screw hole I and fixed cover tip in proper order, realizes the fixed connection between locking portion and the stopper main part, and the inside of latch segment is equipped with the logical groove of fixed slot and oil cable, and the fixed slot is located the outside that the oil cable led to the groove, and the logical groove intercommunication of fixed slot and oil cable, and two latch segments make up the back, and two fixed slot formation and the locking of standard hydraulic pressure oil cable hold complex fixed orifices, and two oil cable lead to the groove constitution oil cable through-hole.
The hydraulic winch comprises a winch, a hydraulic motor, a cable arranging device and a sliding ring, the two ends of a rotating shaft of the hydraulic winch are respectively fixed with the winch, an oil cable is wound on the rotating shaft, the hydraulic motor is arranged on a support frame on the outer side of the winch on one side and is in butt joint with the underwater vehicle, the sliding ring is fixed on the support frame on the outer side of the winch on the other side, an oil cable hydraulic interface on the sliding ring is in butt joint with the underwater vehicle, an electronic watertight connector is further arranged on the sliding ring, and the cable arranging device is arranged in front of the winch.
The invention has the beneficial effects that:
(1) the sensors are released to the position close to the seabed through the hydraulic winch and the oil cable, the distance between each sensor and the submersible vehicle is large in the measuring process, the interference of the submersible vehicle on the sensors is greatly reduced, and the magnetic gradient measuring precision of the near seabed is improved;
(2) the serial release and recovery among a plurality of sensors are realized, and the serial gradient measurement of the sensors is realized;
(3) fluid in the oil cable both can play the water proof guard action of oil cable, can also carry out drive control to the stopper through the pressure of control fluid to a plurality of series connection sensors's release has been realized.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of one end of the hydraulic winch;
FIG. 4 is a schematic view of the other end of the hydraulic winch;
FIG. 5 is a schematic perspective view of a sensor release mechanism;
FIG. 6 is a schematic view of the structure of the sensor release capsule;
FIG. 7 is a schematic diagram of the construction of the sensor;
FIG. 8 is a schematic structural view of the present invention;
FIG. 9 is a schematic view of the structure of the stopper body;
FIG. 10 is a schematic view showing the internal structure of the stopper body;
FIG. 11 is a schematic view of the detent construction;
FIG. 12 is a schematic view of the mounting structure of the locking block and the retainer body;
FIG. 13 is a schematic top view of the locking block;
fig. 14 is a bottom view of the locking block.
In the figure: 1, a frame; 2, a hydraulic winch; 201 capstan; 202 a hydraulic motor; 203, a cable arranging device; 204 slip rings; 205 an oil cable hydraulic interface; 206 electronic watertight connector; 3, a limiter; 301 a locking part; 302 fixing the groove; 303 oil cable through grooves; 304 a threaded hole I; 305 a locking block; 306 a locking pin; 307 a stopper body; 308, fixing a sleeve; 309 a threaded hole II; 310 a threaded joint; 311 a through hole; 312 locking pin through holes; 313 springs; 314 a push plate; 4, butting piles by using a submersible vehicle; 5, hydraulically butting the panels; 6, a sensor release cabin; 7, pushing out the hydraulic cylinder by the sensor; 701 a piston rod; 702 a push rod; 8 releasing the cabin lock; 9 a guide pulley; 10 an oil cable; 11, a cable penetrating ring; 12 a limiting block; 13 strip-shaped holes; 14 sensor.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
The offshore bottom magnetic gradient measurement method comprises the following steps.
Firstly, a magnetic gradient measuring device near the sea bottom is installed on a submersible vehicle.
As shown in fig. 1 and 2, the offshore bottom magnetic gradient measuring device comprises a frame 1, a hydraulic cable car 2 and a sensor release mechanism, wherein the hydraulic cable car 2 and the sensor release mechanism are both arranged on the frame 1, a submersible vehicle docking pile 4 fixedly connected with a submersible vehicle is fixed at the top of the frame 1, a hydraulic docking panel 5 is further fixed on the frame 1, and hydraulic power is provided for the device by the submersible vehicle through the hydraulic docking panel 45. The hydraulic cable car 2 and the sensor release mechanism are connected by an oil cable 10.
As shown in fig. 3 and 4, the hydraulic winch 2 includes a winch 201, a hydraulic motor 202, a cable guider 203, and a slip ring 204, the winch 201 is fixed at each end of the rotating shaft of the hydraulic winch 2, the hydraulic motor 202 is arranged on the support frame outside the winch at one side, the hydraulic pipe of the hydraulic motor 202 is connected with the hydraulic docking panel 5, the hydraulic motor 202 is docked with the underwater vehicle through the hydraulic docking panel 5, and the underwater vehicle provides power for the hydraulic motor. A sliding ring 204 is fixed on the supporting frame on the outer side of the winch on the other side, an oil cable hydraulic interface 205 on the sliding ring 204 is connected with the hydraulic butt joint panel 4 through a hydraulic pipe, hydraulic oil is provided for an oil cable by the underwater vehicle, meanwhile, an electronic watertight connector 206 is further arranged on the sliding ring 204, the sensor is electrified through the electronic watertight connector 206, the winch sliding ring and the oil cable, communication between the sensor and the underwater vehicle is achieved, the mode can only achieve real-time communication with the last level, namely the Nth level sensor, and other sensors can work in a mode that a wireless communication assembly or data are added at specific positions in the oil cable in a self-contained storage mode. The front of the winch 201 is provided with a cable guider 203, and the cable guider 203 is used for controlling the winding direction of the cable, so that the cable can be wound better.
As shown in fig. 5 to 7, the sensor release mechanism includes a stopper 3, a sensor release capsule 6, a sensor push-out hydraulic cylinder 7, and a release capsule lock 8. The sensor release capsule 6 is cylindrical and is fixed to the frame 1. In this embodiment, the hydraulic cable car 2 and the sensor release cabin 6 are both located at the front end of the frame 1, the rear end of the frame 1 is provided with two guide pulleys 9, the oil cable on the hydraulic cable car is connected with the sensor release cabin through the two guide pulleys 9 respectively, and the guide pulleys 9 play a role in guiding.
The front end of the sensor release cabin 6 is a sensor release end which is trumpet-shaped, so that the release and the recovery of the sensor are facilitated. Meanwhile, the releasing end of the sensor is also provided with a releasing cabin lock 8, the releasing cabin lock 8 is in a rod shape, one end of the releasing cabin lock is connected with the hydraulic cylinder, and the other end of the releasing cabin lock extends into the sensor releasing cabin 6, so that the sensor in the sensor releasing cabin 6 is blocked.
The sensor release cabin 6 is internally provided with a plurality of sensors 14 which are arranged along the axial direction, wherein the sensor close to the release end of the sensor is a first-level sensor, and the following sensors are a second-level sensor and a third-level sensor … … n-level sensor in sequence. As shown in fig. 7, at least two cable penetrating rings 11 are fixed on the top surface of the sensor 14 at intervals, the oil cable 10 sequentially penetrates through the cable penetrating rings 11 on the tops of the sensors, a limiting block 12 is fixed at the tail end of the oil cable 10, and the size of the limiting block 12 is larger than the ring aperture of the cable penetrating ring 11, so that the cable penetrating rings are prevented from falling off from the oil cable, and the cable penetrating rings 11 can be ensured to be always sleeved on the oil cable 10.
The top surface of the sensor release cabin 6 is provided with a strip-shaped hole 13 along the axial direction thereof, the cable-penetrating rings 11 are all positioned in the strip-shaped holes 13, and the lower parts of the cable-penetrating rings 11 can slide in the strip-shaped holes 13. When the grommet 11 moves in the strip-shaped hole 13, the sensor fixedly connected with the grommet moves in the sensor release chamber 6. A sensor push-out hydraulic cylinder 7 is fixed on the outer wall of the sensor release cabin 6, the cylinder body of the sensor push-out hydraulic cylinder 7 is fixedly connected with the outside of the sensor release cabin 6, and a piston rod 701 of the sensor push-out hydraulic cylinder 7 faces the n-level sensor. One end of the piston rod 701 is connected with the cylinder body of the sensor pushing hydraulic cylinder, the other end is fixed with a push rod 702, and the push rod 702 is positioned at the rear side of the cable penetrating ring 11 fixed on the top of the n-stage sensor, wherein the rear side refers to the rear side relative to the movement direction of the sensor. The sensor push-out hydraulic cylinder 7 is connected with the hydraulic butt joint panel 5 through a hydraulic pipe.
The oil cable is fixed with a plurality of limiters, when n sensors are arranged in the sensor release cabin 6, n-1 limiters are arranged on the corresponding oil cable, and the limiters are ensured to be respectively in one-to-one correspondence with the second-level sensors to the n-level sensors by reasonably setting the positions of the limiters. As shown in fig. 8 to 14, the stopper 3 includes a locking portion 301, a locking pin 306, and a stopper body 307, the stopper body 307 is cylindrical, two ends of the stopper body 307 are respectively fixedly connected to the locking portion 301, and the locking pin 306 is disposed in the stopper body 307.
Stopper main part 307 includes columniform fixed cover 308, and the axial both ends of fixed cover 308 are fixed with threaded joint 310 respectively, through threaded joint 310, realize being connected of stopper main part 307 and oil cable 11, and the equal interval of the axial both sides terminal surface of fixed cover 308 simultaneously sets up several screw hole II 309, realizes the fixed connection between fixed cover 308 and the latch segment 305 through screw hole II. The size of the fixing sleeve 308 is smaller than the ring aperture of the cable-passing ring 11.
The center of fixed cover 308 is equipped with the through-hole, and the both ends of through-hole communicate with screwed joint 310 respectively, and hydraulic oil gets into in the through-hole through the screwed joint of oil cable from one end, flows to the screwed joint of the other end to flow out in the oil cable with this screwed joint is connected. The retaining sleeve 308 has a plurality of locking pin through holes 312 spaced radially therein, and the locking pins 306 are disposed in the locking pin through holes 312. One end of the lock pin through hole 312 is communicated with the through hole, and the other end is communicated with the opening of the annular outer side wall of the fixed sleeve. In this embodiment, two locking pin through holes 312 are disposed in the fixing sleeve 308, the two locking pin through holes 312 are located on the same plane, and the two locking pin through holes 312 are symmetrically disposed.
And a push plate 314 is fixed on one side of the lock pin 306 facing the through hole, and the push plate 314 is directly contacted with hydraulic oil in the through hole. A spring 313 is wound on the outer side of the locking pin 306, and one end of the spring 313 is fixedly connected with the push plate 314. The locking pin 306 is slidably disposed within the locking pin through bore 312. While ensuring that the size of the opening in the annular outer side wall of the sleeve 308 is greater than the diameter of the detent 306 and less than the diameter of the spring 313. When the stopper 3 is in a non-working state, the locking pin 306 is located in the locking pin through hole 312, and since the size of the fixing sleeve 308 is smaller than the ring aperture of the cable penetrating ring 11, the oil cable 11 can drive the stopper 3 to move between the cable penetrating rings 11. When the hydraulic oil in the through hole is pressurized, the hydraulic oil can push the push plate 314 to move outwards along the radial direction, the lock pin 306 and the spring 313 which are fixedly connected with the push plate 314 also move outwards, when the spring 313 moves until one end of the spring is contacted with the opening of the annular outer side wall of the fixing sleeve, the spring 313 cannot move outwards continuously, the push plate 314 can push the lock pin 306 to move outwards continuously, the end part of the lock pin 306 extends out of the lock pin through hole 312 and is higher than the outer side wall of the fixing sleeve 308, the size of the fixing sleeve with the extending lock pins on two sides is larger than that of the cable penetrating ring 11, when the oil cable 10 drives the limiter 2 to move to the cable penetrating ring 11, the limiter 3 cannot penetrate through the cable penetrating ring any more, and only can push the cable penetrating ring 11 and the sensor connected with the cable penetrating ring to move together with the oil cable. The spring is under compression under the urging of the 313 push plate 314. When the oil pressure in the through hole is reduced, the lock pin 303 automatically returns to the lock pin through hole 312 again by the elastic force of the spring 313.
The locking portion of the axial end of the retaining sleeve 308 is formed by the combination of two locking blocks 305. The locking block 305 is provided with a plurality of threaded holes I304, and connecting threads sequentially penetrate through the threaded holes I304 and the threaded holes II 309 at the end part of the fixing sleeve, so that the locking part 301 is fixedly connected with the limiter main body 307. The inside of latch segment 305 is equipped with fixed slot 302 and the logical groove 303 of oil cable, and fixed slot 302 is located the outside of the logical groove 303 of oil cable, and fixed slot 302 and the logical groove 303 intercommunication of oil cable. After the two locking blocks are combined, the two fixing blocks 302 form a hexagonal fixing hole which is matched with the locking end of the standard hydraulic oil cable to prevent the oil cable from loosening; the two oil cable through grooves 303 form a cylindrical oil cable through hole so that an oil cable can pass through the oil cable through hole conveniently. In addition, the surface of locking portion is cylindrical towards the one end of stopper main part, and the other end is the round platform shape.
And secondly, releasing the primary sensor.
And (3) opening the release cabin lock, pushing the sensor out of the hydraulic cylinder 7 to act, pushing the sensor to move towards the sensor release end of the sensor release cabin 6 by the push rod 702, closing the release cabin lock 8 when the first-level sensor is pushed out of the sensor release cabin 6, pushing the sensor out of the hydraulic cylinder 7 to stop acting, and blocking other sensors in the cabin.
And thirdly, releasing the secondary sensor.
The first-level sensor continuously descends under the action of gravity and falls to a position near the sea bottom for magnetic gradient measurement, the first-level sensor can pull the oil cable 10 through the cable penetrating ring 11 while descending, so that the hydraulic winch 2 is in a continuous cable laying state, when the stopper 3 corresponding to the secondary sensor moves to between the two cable-passing rings 11 fixed on the top of the secondary sensor, the stopper 3 works to increase the oil pressure in the stopper 3, under the pushing action of the oil pressure, the lock pin 306 in the stopper 3 extends out of the fixed sleeve 308, so that the external dimension of the fixed sleeve 308 is increased, and when the oil cable 10 drives the stopper 3 to move to contact with the cable penetrating ring 11 fixedly connected with the secondary sensor along with the continuous cable laying of the cable car, the stopper 3 can push the cable penetrating ring 11 and the secondary sensor fixedly connected with the cable penetrating ring to the sensor releasing end under the pulling action of the cable until the cable penetrating ring is pushed out of the sensor releasing cabin.
And fourthly, repeating the action of the third step, and sequentially releasing the subsequent sensors.
Under the action of gravity of a plurality of sensors connected in series, the hydraulic winch 2 continuously releases the cable, then a plurality of sensors 14 leave the sensor release cabin 6 along with the oil cable 10 through the limiting device 3, the release of the plurality of sensors 14 connected in series on the sea bottom is realized, the positions of the sensors on the oil cable at all levels are limited through the limiting device 3, and the magnetic gradient measurement of the sensors connected in series is realized.
When the sensors need to be recovered, the hydraulic cable car 2 collects the sensors, and the sensors 14 can be pulled back into the sensor release cabin 6 through the oil cable 10.
The offshore bottom magnetic gradient measuring device provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A method of offshore subsea magnetic gradient measurement, comprising the steps of:
s1, installing a near-seabed magnetic gradient measuring device on a submersible vehicle:
the offshore bottom magnetic gradient measuring device comprises a frame, a hydraulic cable car and a sensor releasing mechanism, wherein the hydraulic cable car and the sensor releasing mechanism are both arranged on the frame, the top of the frame is fixed with the underwater vehicle, and the hydraulic cable car and the sensor releasing mechanism are connected through an oil cable;
the sensor release mechanism comprises a stopper, a sensor release cabin, a sensor push-out hydraulic cylinder and a release cabin lock, wherein the sensor release cabin is cylindrical and is fixed on a frame, the front end of the sensor release cabin is a sensor release end, a plurality of sensors which are arranged along the axial direction are arranged in the sensor release cabin, the sensor close to the sensor release end is a first-level sensor, the subsequent sensors are a second-level sensor and a third-level sensor … … n-level sensor in sequence, at least two cable penetrating rings are fixed on the surface of the top of each sensor at intervals, an oil cable penetrates through the cable penetrating rings on the tops of the sensors in sequence, a limiting block is fixed at the tail end of the oil cable, and the size of the limiting block is larger than the ring aperture of the cable penetrating rings;
the top surface of the sensor release cabin is provided with strip-shaped holes along the axial direction, the cable penetrating rings are all positioned in the strip-shaped holes, the lower parts of the cable penetrating rings slide in the strip-shaped holes, a sensor push-out hydraulic cylinder is fixed on the outer wall of the sensor release cabin fixed at the top end of the sensor, the cylinder body of the sensor push-out hydraulic cylinder is fixedly connected with the outside of the sensor release cabin, the piston rod of the sensor push-out hydraulic cylinder faces the n-level sensor, one end of the piston rod is connected with the cylinder body of the sensor push-out hydraulic cylinder, the other end of the piston rod is fixed with a push rod, the push rod is positioned at the rear side of the cable penetrating ring fixed at the top of the n-level sensor,
the oil cable is fixedly provided with n-1 limiters, each limiter corresponds to the second-level sensor to the n-level sensor one by one, each limiter comprises a locking part, a lock pin and a limiter main body, the limiter main body is cylindrical, two ends of the limiter main body are fixedly connected with the locking parts respectively, and the lock pins are arranged in the limiter main body;
the stopper main body comprises a cylindrical fixed sleeve, the two axial ends of the fixed sleeve are respectively fixed with a threaded joint, meanwhile, the end faces of the two axial sides of the fixed sleeve are respectively provided with a plurality of threaded holes II at intervals, and the size of the fixed sleeve is smaller than the ring aperture of the cable penetrating ring;
the center of the fixed sleeve is provided with a through hole, two ends of the through hole are respectively communicated with the threaded connector, a plurality of lock pin through holes are arranged in the fixed sleeve at intervals along the radial direction of the fixed sleeve, the lock pins are arranged in the lock pin through holes in a sliding manner, one end of each lock pin through hole is communicated with the through hole, the other end of each lock pin through hole is communicated with the opening of the annular outer side wall of the fixed sleeve, when the end part of each lock pin extends out of the lock pin through hole and is higher than the outer side wall of the fixed sleeve, the size of the fixed sleeve with the extending lock pins is larger than the pore diameter of the cable penetrating ring;
s2, releasing a first-level sensor:
the release cabin lock is opened, the sensor pushes out of the hydraulic cylinder to act, the push rod pushes the sensor to move towards the sensor release end of the sensor release cabin, when the first-level sensor is pushed out of the sensor release cabin, the release cabin lock is closed, the sensor pushes out of the hydraulic cylinder to stop acting, and other sensors are blocked in the cabin;
s3, releasing the secondary sensor:
the first-stage sensor continuously descends under the action of gravity and falls to a position near the sea bottom for magnetic gradient measurement, the first-stage sensor can pull the oil cable through the cable penetrating ring while descending, so that the hydraulic winch is in a continuous cable releasing state, when the limiter corresponding to the second-stage sensor moves to a position between the two cable penetrating rings fixed at the top of the second-stage sensor, the limiter works to increase the oil pressure in the limiter, under the pushing action of the oil pressure, the lock pin in the limiter extends out of the fixing sleeve, so that the external size of the fixing sleeve is increased, and when the oil cable drives the limiter to move to be in contact with the cable penetrating ring fixedly connected with the second-stage sensor, the limiter pushes the cable penetrating ring and the second-stage sensor fixedly connected with the cable penetrating ring to a sensor releasing end under the pulling action of the cable until the second-stage sensor is pushed out of the sensor releasing cabin;
s4, repeating the step S3, and sequentially releasing the following sensors:
under the action of gravity of a plurality of sensors connected in series, the hydraulic winch continuously releases the cable, then a plurality of sensors leave the sensor release cabin along with the oil cable through corresponding limiters, the release of the plurality of sensors connected in series on the seabed is realized, the positions of the sensors at all levels on the oil cable are limited through the limiters, and the magnetic gradient measurement of the sensors connected in series is realized.
2. The offshore bottom magnetic gradient measurement method of claim 1, wherein the hydraulic cable car and the sensor release capsule are both located at the front end of the frame, the rear end of the frame is provided with two guide pulleys, and the oil cable on the hydraulic cable car is connected with the sensor release capsule after passing through the two guide pulleys respectively.
3. The offshore bottom magnetic gradient measurement method of claim 1, wherein the sensor release end is flared and the release chamber lock is rod-shaped with one end connected to the hydraulic cylinder and the other end extending into the sensor release chamber to block the sensor in the sensor release chamber.
4. Offshore bottom magnetic gradient measurement method according to claim 1, characterized in that a push plate is fixed to the side of the locking pin facing the through hole, the push plate being in direct contact with the hydraulic oil in the through hole. The outer side of the lock pin is wound with a spring, one end of the spring is fixedly connected with the push plate, the lock pin is arranged in the lock pin through hole in a sliding mode, and the size of an opening in the annular outer side wall of the fixed sleeve is larger than the diameter of the lock pin and smaller than the diameter of the spring.
5. The offshore bottom magnetic gradient measurement method of claim 1, wherein the locking portion of the axial end of the retention sleeve is formed by a combination of two locking blocks. Be equipped with several screw hole I on the latch segment, connecting thread passes screw hole II of screw hole I and fixed cover tip in proper order, realizes the fixed connection between locking portion and the stopper main part, and the inside of latch segment is equipped with the logical groove of fixed slot and oil cable, and the fixed slot is located the outside that the oil cable led to the groove, and the logical groove intercommunication of fixed slot and oil cable, and two latch segments make up the back, and two fixed slot formation and the locking of standard hydraulic pressure oil cable hold complex fixed orifices, and two oil cable lead to the groove constitution oil cable through-hole.
6. The offshore bottom magnetic gradient measurement method according to claim 1, wherein the hydraulic winch comprises a winch, a hydraulic motor, a cable guider and a slip ring, the winch is fixed at each end of a rotating shaft of the hydraulic winch, the oil cable is wound on the rotating shaft, the hydraulic motor is arranged on a support frame outside the winch on one side and is in butt joint with the underwater vehicle, the slip ring is fixed on a support frame outside the winch on the other side, a hydraulic interface of the oil cable on the slip ring is in butt joint with the underwater vehicle, an electronic watertight connector is further arranged on the slip ring, and the cable guider is arranged in front of the winch.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7217064B1 (en) | 2021-11-18 | 2023-02-02 | 青▲島▼海洋地▲質▼研究所 | Magnetic gradient measuring device near the seafloor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1140214A (en) * | 1980-01-29 | 1983-01-25 | Malcolm E. Bell | Multisensor magnetometers |
| CA1208292A (en) * | 1982-08-27 | 1986-07-22 | Malcolm E. Bell | Magnetometer with precision aligned sensors |
| CN105091880A (en) * | 2015-07-17 | 2015-11-25 | 哈尔滨工程大学 | Method for tracking and positioning underwater long-distance magnetic object based on scalar sensor array |
| CN108828471A (en) * | 2018-06-11 | 2018-11-16 | 中国科学院地质与地球物理研究所 | A kind of multi -components seabed Measurement Method for Magnetic Field and device |
| CN109297803A (en) * | 2018-10-24 | 2019-02-01 | 中国海洋大学 | A system for measuring mechanical properties of seabed sediments suitable for the whole sea depth |
| CN110658566A (en) * | 2019-11-08 | 2020-01-07 | 自然资源部第一海洋研究所 | A submarine geomagnetic diurnal variation observation device |
| CN211014673U (en) * | 2019-11-08 | 2020-07-14 | 自然资源部第一海洋研究所 | Seabed geomagnetism daily variation observation device |
-
2021
- 2021-11-18 CN CN202111367720.8A patent/CN114264986B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1140214A (en) * | 1980-01-29 | 1983-01-25 | Malcolm E. Bell | Multisensor magnetometers |
| CA1208292A (en) * | 1982-08-27 | 1986-07-22 | Malcolm E. Bell | Magnetometer with precision aligned sensors |
| CN105091880A (en) * | 2015-07-17 | 2015-11-25 | 哈尔滨工程大学 | Method for tracking and positioning underwater long-distance magnetic object based on scalar sensor array |
| CN108828471A (en) * | 2018-06-11 | 2018-11-16 | 中国科学院地质与地球物理研究所 | A kind of multi -components seabed Measurement Method for Magnetic Field and device |
| CN109297803A (en) * | 2018-10-24 | 2019-02-01 | 中国海洋大学 | A system for measuring mechanical properties of seabed sediments suitable for the whole sea depth |
| CN110658566A (en) * | 2019-11-08 | 2020-01-07 | 自然资源部第一海洋研究所 | A submarine geomagnetic diurnal variation observation device |
| CN211014673U (en) * | 2019-11-08 | 2020-07-14 | 自然资源部第一海洋研究所 | Seabed geomagnetism daily variation observation device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7217064B1 (en) | 2021-11-18 | 2023-02-02 | 青▲島▼海洋地▲質▼研究所 | Magnetic gradient measuring device near the seafloor |
| JP2023075046A (en) * | 2021-11-18 | 2023-05-30 | 青▲島▼海洋地▲質▼研究所 | Near-seabed magnetic force gradient measurement device |
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