CN114812694B - Expendable underwater thermohaline depth measuring device carried on underwater vehicle - Google Patents
Expendable underwater thermohaline depth measuring device carried on underwater vehicle Download PDFInfo
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- CN114812694B CN114812694B CN202210732159.7A CN202210732159A CN114812694B CN 114812694 B CN114812694 B CN 114812694B CN 202210732159 A CN202210732159 A CN 202210732159A CN 114812694 B CN114812694 B CN 114812694B
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- floater
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- screw rod
- wing plate
- underwater vehicle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/52—Tools specially adapted for working underwater, not otherwise provided for
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- Ocean & Marine Engineering (AREA)
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- Testing Or Calibration Of Command Recording Devices (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention belongs to the technical field of ocean observation, and relates to a jettisonable underwater thermohaline depth measuring device carried on an underwater vehicle. A jettisonable underwater thermohaline depth measuring device carried on an underwater vehicle comprises a split shell, a front end floater, a rear end floater, a CTD sensor and a control panel; the lower part of the front end floater is connected with a bottom end cover, the outer part of the rear end floater is provided with a split shell, and the split shell is connected with the bottom end cover in a matched manner through a connecting mechanism; the CTD sensor is connected to the top of the front end floater in a watertight manner; a pressure trigger mechanism is arranged in the front end floater; the pressure trigger structure comprises a screw rod seat, a movable screw rod and a cam screw rod; the screw rod seat is sequentially connected with the bottom end cover and the front end floater in a sealing way to form a watertight space; the control panel is installed in the watertight space. The device is emitted out by an underwater vehicle, temperature and salt depth measurement of a water body profile is completed in the floating process, and measurement data are transmitted to the underwater vehicle; and after the measurement is finished, the material is disintegrated and discarded.
Description
Technical Field
The invention belongs to the technical field of ocean observation, and particularly relates to a jettisonable underwater thermohaline depth measuring device carried on an underwater vehicle.
Background
At present, different monitoring modes are adopted for ocean monitoring with different requirements. For the application scene needing all-weather monitoring, a seawater buoy monitoring mode is adopted. For an application scene needing to measure the ocean water profile detection, measurement modes such as an ARGO buoy or a submerged buoy are generally adopted. The monitoring of weather forecast and natural disasters adopts ocean monitoring modes such as satellites, ships and the like.
By adopting an ARGO buoy or submerged buoy ocean profile measurement mode, the device can send water body measurement data to a shore-based platform only when the device floats to the water surface or the communication antenna is exposed out of the water surface. The ARGO buoy has the limitations of large volume, high manufacturing cost, low concealment and easy exposure, and is not suitable for operation in sensitive sea areas.
The development of underwater vehicles from the second half of the 20 th century is accompanied by the progress of mankind in understanding, developing and protecting the ocean. In recent years, the underwater marine environment detection device is used as an underwater important detection device, a large amount of marine environment detection and data acquisition are completed, and richer marine data are provided for scientific investigation and marine engineering. Compared with a buoy and a submerged buoy, the underwater vehicle has excellent maneuverability, controllability and instantaneity, and can finish large-scale marine environment measurement and monitoring operation along a vertical section and a horizontal section. The underwater vehicle can carry various sensor peripherals, wherein basic ocean power parameters of temperature, salt and depth are obtained, and the basic requirements of the actual application of the underwater vehicle are met. At present, CTD sensors are arranged on an underwater vehicle in a conventional mode, and no disposable underwater temperature and salt depth measuring device suitable for the underwater vehicle is available.
Disclosure of Invention
The invention aims to provide a jettisonable underwater thermohaline depth measuring device carried on an underwater vehicle, which is emitted by the underwater vehicle, a CTD (computer-to-digital converter) sensor measures profile data of an ocean water body, and the data is transmitted back to the underwater vehicle in real time through an umbilical cable. When the measurement is completed, the umbilical cable is cut off by the underwater vehicle, and the device is automatically disassembled and sunk into the sea bottom. The device of the invention utilizes the change of underwater pressure to trigger the self-destruction and disintegration of the device, and the abandonment after the measurement is finished.
In order to achieve the purpose, the invention adopts the technical scheme that: a jettisonable underwater thermohaline depth measuring device carried on an underwater vehicle comprises a split shell, a front end floater, a rear end floater, a CTD sensor and a control panel; the lower part of the front end floater is connected with a bottom end cover; a split shell is arranged outside the rear end floater and is connected with the bottom end cover through a connecting mechanism; the CTD sensor is connected to the top of the front end floater in a watertight manner; a pressure trigger mechanism is arranged in the front end floater; the pressure trigger mechanism comprises a screw rod seat, a movable screw rod and a cam screw rod; the screw rod seat is sequentially connected with the bottom end cover and the front end floater in a sealing manner to form a watertight space; the middle part of the screw rod seat is provided with a through hole, and the lower part of the through hole is sealed by a flexible cover; the movable screw is arranged in the through hole; the cam screw is arranged on the upper end surface of the screw seat and is in transmission connection with the movable screw; the control panel is installed in the watertight space.
Further preferably, the cam screw comprises a shaft, a thread structure fixed on the shaft; two ends of the shaft are fixed on the screw rod seat through screw rod supporting seats; a fixing ring is arranged between one of the screw rod supporting seats and the thread structure, and a turntable which is coaxial with the thread structure is arranged in the fixing ring; the turntable is connected with the fixing ring through a coil spring; a movable contact is arranged on the turntable; the screw rod seat is provided with a control contact; the control contact is electrically connected with the control board; the movable contact is matched with the control contact to generate a contact signal.
Further preferably, the inner wall of the rear end floater is provided with a spring base; a central rod is arranged in the middle of the rear end floater; the upper portion of well core rod is equipped with the spring support, be equipped with adjusting spring between spring support and the spring base.
Further preferably, the rear end float is provided with a top end cover, and the top end cover is in watertight connection with the top of the rear end float; the top end cover is provided with a main rod body, and the upper end of the main rod body is provided with a buffer groove; the buffer slot is matched with the lower end of the movable screw rod.
Further preferably, the split shell is wound and fixed outside the rear end floater through an umbilical cable and consists of a two-part shaft splitting structure; wherein, stamp hole connecting lines are arranged on the two parts of the shaft splitting structures along the circumferential direction.
Furthermore, the connecting mechanism comprises a hook arranged at the upper end of the splitting shell and a connecting spring fixed on the bottom end cover; the free end of the connecting spring is hung on the hook.
Further preferably, the side wall of the front end float is provided with a plurality of water pipes, the water pipes are provided with electromagnetic valves, and the electromagnetic valves are electrically connected with the control board.
Further preferably, the rear end float is provided with an outer wall plate; a plurality of wing plate grooves are formed along the circumferential direction of the outer wall plate; wing plates are arranged in the wing plate grooves; one end of the wing plate is rotatably connected in the wing plate groove; the other end of the wing plate and the wing plate groove are respectively provided with magnets with the same polarity.
Further preferably, the side wall of the rear end floater is provided with a threading hole, one end of the umbilical cable is connected with the CTD controller inside the front end floater, and the other end of the umbilical cable penetrates out of the threading hole and then is wound to the upper part of the split shell from the bottom of the rear end floater to be connected with an underwater vehicle.
The expendable underwater thermohaline depth measuring device carried on the underwater vehicle is emitted out by the underwater vehicle, the front end floater is separated from the rear end floater firstly, then the front end floater floats upwards under the action of buoyancy, a CTD sensor measures thermohaline depth of a water body profile in the upward floating process, and measurement data are transmitted to the underwater vehicle; when the triggering condition of the pressure triggering mechanism is met, the front end floater automatically disintegrates and falls off to the seabed; the rear end floater also loses water tightness due to pressure change in the upward floating process, and then disintegrates and falls off.
Drawings
FIG. 1 is an overall sectional structure diagram of a disposable underwater temperature and salt depth measuring device mounted on an underwater vehicle in an embodiment of the invention;
FIG. 2 is a schematic structural view of a split shell;
FIG. 3 is a schematic structural view of the aft end float;
FIG. 4 is a schematic structural view of a top end cap;
FIG. 5 is a schematic view of a center rod configuration;
FIG. 6 is a schematic structural view of the outer wall panel of the aft end float;
FIG. 7 is a schematic structural view of a front wing panel;
FIG. 8 is a schematic structural view of an elastic support;
FIG. 9 is an enlarged view of a portion of the front wing plate and the front wing plate slot;
FIG. 10 is a schematic structural view of a bottom end cap;
FIG. 11 is a schematic view of a state of the pressure trigger mechanism;
FIG. 12 is another state diagram of the pressure activated mechanism;
FIG. 13 is a schematic view of a screw seat;
FIG. 14 is a schematic view of a cam screw;
FIG. 15 is a schematic view of a coil spring;
FIG. 16 is a schematic view of the front end float;
FIG. 17 is a schematic view of a moving screw;
FIG. 18 is a schematic view of a control contact;
FIG. 19 is a functional block diagram of the triggering of the contact signal;
in the figure: 1: a rear end float; 2: a center pole; 3: a front wing panel; 4: an elastic support; 5: a twisted umbilical cable; 6: an outer wall panel; 7: splitting the shell; 8: a connecting spring; 9: a bottom end cap; 10: a coil spring; 11: a bearing; 12: a front end float; 13: an electromagnetic valve; 14: a CTD sensor; 15: a gasket; 16: a control panel; 17: moving the screw; 18: a cam screw; 19: a screw seat; 20: a control contact; 21: a top end cap; 22: a rear wing panel; 23: adjusting the spring;
1-1: a bottom watertight port; 1-2: a watertight port sealing groove; 1-3: a twisted pair fixing port; 1-4: a first bolt hole; 1-5: a threading hole; 1-6: a spring mount; 1-7: end cover seal grooves; 1-8: an end cap plane; 1-9: a boss;
2-1: a fixed head; 2-2: a spring support; 2-3: a lower club head; 2-4: a first sealing end face;
3-1: a rotating shaft; 3-2: a shaft hole; 3-3: an end portion; 3-4: a groove;
4-1: a side end; 4-2: a middle shaft;
6-1: a second bolt hole; 6-2: a wire slot; 6-3: a central bore; 6-4: a first water permeable hole; 6-5: a front vane slot; 6-6: a front wing plate bracket moving groove; 6-7: a front wing plate locating slot; 6-8: a front wing plate rotating shaft groove; 6-9: a rear wing plate groove; 6-10: a rear wing plate bracket moving groove; 6-11: a rear wing plate positioning groove; 6-12: a rear wing plate rotating shaft groove; 6-13: a magnet block;
7-1: a front fender end housing; 7-2: a connecting rod; 7-3: hooking; 7-4: a postage stamp hole connecting line; 7-5: a card slot; 7-6: a rear wing plate end housing; 7-7: a cable passing groove;
9-1: a trench; 9-2: a second water permeable hole; 9-3: a spring fixing seat; 9-4 sealing grooves; 9-5: a third bolt hole; 9-6: an end seal groove; 9-7: a fourth bolt hole; 9-8: an inner end face; 9-9: an outer wall;
10-1: an outer fixed end; 10-2: an inner fixed end;
12-1: a fifth bolt hole; 12-2: a water pipe; 12-3: a solenoid valve fixing seat; 12-4: a control panel base; 12-5: a CTD fixing hole; 12-6: a main housing;
17-1: a club head; 17-2: a first thread formation;
18-1: a first shaft end; 18-2: a second thread structure: 18-3: a turntable; 18-4: a second shaft end; 18-5: a first coil spring fixing hole; 18-6: a movable contact;
19-1: a watertight joint hole; 19-2: a control contact card slot; 19-3: a first screw rod supporting seat; 19-4: a fixing ring; 19-5: a through hole; 19-6: a second screw rod supporting seat; 19-7: a second sealing end face; 19-8: a sixth bolt hole; 19-9: a third water permeable hole; 19-10; supporting a tube; 19-11: a flexible bladder; 19-12: a second coil spring fixing groove;
20-1: a lead head;
21-1: a central recess; 21-2: a watertight surface; 21-3: a buffer tank; 21-4: the main rod body.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The invention provides a jettisonable underwater temperature and salt depth measuring device carried on an underwater vehicle, the overall structure of which is shown in figure 1, and the device mainly comprises: the device comprises a rear end floater 1, a central rod 2, a double-twisted umbilical cable 5, an outer wall plate 6, a split shell 7, a connecting spring 8, a bottom end cover 9, a front end floater 12, a CTD sensor 14, a control board 16, a moving screw 17, a cam screw 18, a screw seat 19, a control contact 20, a top end cover 21, an adjusting spring 23 and the like.
The main structure of the device comprises a rear-end floater 1, a front-end floater 12, a splitting shell 7 and a bottom end cover 9, wherein the splitting shell 7 is wrapped outside the rear-end floater 1 and is wound and fixed on the rear-end floater 1 by adopting a twisted umbilical cable 5. The lower part of the front end float 12 is sealingly connected to the bottom end cap 9. An axially arranged connecting spring 8 is arranged on the bottom end cap 9, the upper end of which is fixed on the bottom end cap 9.
As shown in figure 2, the split shell 7 is composed of two parts which are completely the same in shaft split structure, and each part comprises a front wing plate end shell 7-1, a connecting rod 7-2, a hook 7-3, a stamp hole connecting line 7-4, a clamping groove 7-5, a rear wing plate end shell 7-6 and a cable passing groove 7-7. The connecting rod 7-2 is arranged at the upper part of the front wing plate end shell 7-1, and the upper end of the connecting rod 7-2 is provided with a hook 7-3. The hook 7-3 hooks the lower end of the connecting spring 8, and ensures the connection of the rear end floater 1 and the front end floater 12. A circle of stamp hole connecting line 7-4 is arranged between the rear wing plate end shell 7-6 and the front wing plate end shell 7-1, so that the split shells can be conveniently broken and disassembled. The rear wing plate end shell 7-6 corresponds to the rear wing plate 22 in position, and the front wing plate end shell 7-1 corresponds to the front wing plate 3 in position. The twisted pair umbilical cable 5 is led out from the twisted pair fixing port 1-3 of the rear end floater 1, led to the bottom of the rear end floater 1 through the cable groove 7-7, and then wound to the front wing plate end shell 7-1 from the bottom of the rear end floater 1 forwards.
The back end floater 1 and the top end cover 21 form a watertight floating body structure, and the central rod 2 is arranged in the watertight floating body structure. As shown in fig. 3, the rear end float 1 comprises a bottom watertight port 1-1, a watertight port sealing groove 1-2, a twisted pair fixing port 1-3, a first bolt hole 1-4, a threading hole 1-5, a spring base 1-6, an end cover sealing groove 1-7, an end cover plane 1-8 and a boss 1-9.
As shown in FIG. 5, the center rod 2 includes a lower rod head 2-3, a first sealing end surface 2-4, a spring seat 2-2, and a fixing head 2-1.
The bottom watertight port 1-1 of the rear end floater 1 is matched with the lower rod head 2-3 of the central rod 2, and the first sealing end face 2-4 of the central rod 2 is matched with the watertight port sealing groove 1-2, so that the watertight performance of the lower port of the rear end floater 1 is ensured. The end cap plane 1-8 of the rear end float 1 is matched with the watertight surface 21-2 of the top end cap 21, so that the watertight performance of the upper port of the rear end float 1 is ensured. The spring base 1-6 corresponds to the spring support 2-2 of the central rod 2, and the adjusting spring 23 is arranged in the middle of the spring base, so that the spring base is convenient to pop open. The bosses 1-9 cooperate with slots 7-5 in the split housing 7 for positioning the split housing 7. The first bolt hole 1-4 is used for connecting and fixing with a second bolt hole 6-1 on an outer wall plate 6 of the rear end floater.
As shown in FIG. 4, the top cover 21 comprises a central groove 21-1, a watertight surface 21-2, a buffer tank 21-3 and a main rod body 21-4. The central groove 21-1 is matched with the fixing head 2-1 of the central rod 2, the watertight surface 21-2 is matched with the end cover plane 1-8 of the rear end floater 1, and the watertight connection is realized through an O-shaped sealing ring arranged in the end cover sealing groove 1-7. The buffer groove 21-3 is matched with the lower end of the movable screw 17 to tightly push the telescopic leather bag, and the rod head 17-1 of the movable screw 17 is pushed against the lower end surface of the electromagnetic valve fixing seat 12-3 to ensure that the telescopic leather bag 19-11 is not expanded in an initial state, so that the position of the movable screw 17 is kept static. The main rod body 21-4 of the top end cap 21 is fitted with the screw seat 19 through the center hole 6-3.
As shown in fig. 6, the outer wall plate 6 of the rear end float 1 is provided with a front wing plate 3 and a rear wing plate 22, and the movement position of the rear end float 1 is adjusted by the front and rear wing plates to prevent the cable from being wound around the propeller of the underwater vehicle. The outer wall plate 6 comprises a second bolt hole 6-1, a wire groove 6-2, a central hole 6-3, a first water permeable hole 6-4, a front wing plate groove 6-5, a front wing plate support moving groove 6-6, a front wing plate positioning groove 6-7, a front wing plate rotating shaft groove 6-8, a rear wing plate groove 6-9, a rear wing plate support moving groove 6-10, a rear wing plate positioning groove 6-11, a rear wing plate rotating shaft groove 6-12 and a magnet block 6-13. The central hole 6-3 is used for the main rod body 21-4 of the top end cover 21 to pass through. The wire chase 6-2 is used for the double-twisted umbilical cable 5 to pass through.
4 front wing plate grooves 6-5 and 4 rear wing plate grooves 6-9 are uniformly distributed on the outer wall plate 6 of the rear end floater, and the interval angle between the adjacent front wing plate grooves 6-5 or the adjacent rear wing plate grooves 6-9 is 90 degrees. The two sides of the front wing plate groove 6-5 are provided with a front wing plate bracket moving groove 6-6, a front wing plate positioning groove 6-7 and a front wing plate rotating shaft groove 6-8. The front wing plate support moving groove 6-6 is connected with the front wing plate positioning groove 6-7, the depth of the front wing plate support moving groove 6-6 is smaller than that of the front wing plate positioning groove 6-7, and the ends, far away from the rotating shaft, of the front wing plate groove 6-5 and the rear wing plate groove 6-9 are provided with magnet blocks 6-13. The two sides of the rear wing plate groove 6-9 are respectively provided with a rear wing plate bracket moving groove 6-10, a rear wing plate positioning groove 6-11 and a rear wing plate rotating shaft groove 6-12. The rear wing plate support moving groove 6-10 is connected with the rear wing plate positioning groove 6-11, and the depth of the rear wing plate support moving groove 6-10 is smaller than that of the rear wing plate positioning groove 6-11.
The front wing panel 3 and the rear wing panel 22 have the same structure, and the structure and the installation manner thereof will be described in detail by taking the front wing panel 3 as an example. As shown in fig. 6, 7, 8 and 9, the rotating shaft 3-1 of the front wing plate 3 is installed in the rotating shaft groove 6-8 of the front wing plate, the shaft hole 3-2 of the front wing plate 3 is opened in the groove 3-4, the central shaft 4-2 of the elastic bracket 4 is matched with the shaft hole 3-2, and two side ends 4-1 of the elastic bracket 4 can move from the moving groove 6-6 of the front wing plate bracket to the positioning groove 6-7 of the front wing plate. Magnets are provided at the end 3-3 of the front blade 3 and the end of the rear blade 22 (at the same position as the front blade), and have the same polarity as the magnets 6-13 in the front blade groove 6-5 and the rear blade groove 6-9, and are repelled from each other.
In an initial state, the front wing plate 3 is restrained by the split shell 7 to shrink in the front wing plate groove 6-5, the side end 4-1 of the elastic support 4 is positioned in the front wing plate support moving groove 6-6, after the split shell 7 is disassembled, under the action of mutual repulsion of the same magnetic poles, the rotating shaft 3-1 of the front wing plate 3 rotates around the front wing plate rotating shaft groove 6-8 and pops out from the front wing plate groove 6-5, at the moment, the side end 4-1 of the elastic support 4 moves to the front wing plate positioning groove 6-7 along the front wing plate support moving groove 6-6 to be locked and positioned, so that the front wing plate 3 is kept in an open state to play a role in rectification. The width of the recess 3-4 of the front wing 3 is sufficient to enable the flexible bracket 4 to move between the front wing slot 6-5 and the front wing 3. The rear wing panel 22 moves in the same manner as the front wing panel 3.
As shown in FIG. 10, the bottom end cover 9 comprises a groove 9-1, a second water permeable hole 9-2, a spring fixing seat 9-3, a sealing groove 9-4, a third bolt hole 9-5, an end sealing groove 9-6, a fourth bolt hole 9-7 and an inner end face 9-8. The groove 9-1 is convenient for the connecting rod 7-2 of the split shell 7 to pass through, and the spring fixing seat 9-3 is used for fixedly connecting the spring 8. The outer wall 9-9 of the bottom end cover 9 is hermetically connected with the inner wall of the front end floater 12 through an O-shaped sealing ring in a sealing groove 9-4, and is matched and fixed with a fifth bolt hole 12-1 on the front end floater 12 through a third bolt hole 9-5. The inner end face 9-8 is in matched sealing with the second sealing end face 19-7 of the screw rod seat 19 through an O-shaped sealing ring in the end sealing groove 9-6. The fourth bolt hole 9-7 is matched and fixed with a sixth bolt hole 19-8 on the screw rod seat 19.
The screw seat 19, the bottom end cover 9 and the front end float 12 form a front end water-tight space. As shown in figure 13, the screw seat 19 comprises a watertight joint hole 19-1, a control contact clamping groove 19-2, a first screw supporting seat 19-3, a fixing ring 19-4, a through hole 19-5, a second screw supporting seat 19-6, a second sealing end face 19-7, a sixth bolt hole 19-8, a supporting tube 19-10, a third watertight hole 19-9, a telescopic leather bag 19-11 and a second coil spring fixing groove 19-12. The first screw rod supporting seat 19-3 and the second screw rod supporting seat 19-6 form a fulcrum, the bearing 11 is placed, and the cam screw rod 18 is supported to rotate. The sixth bolt holes 19-8 are correspondingly matched with the fourth bolt holes 9-7 on the bottom end cover 9. The through hole 19-5 is used for the moving screw 17 to pass through, and the lower part of the through hole 19-5 is sealed by a telescopic leather bag 19-11. The fixing ring 19-4 is fixed on the screw rod seat 19, and the bottom of the fixing ring 19-4 is provided with a control contact clamping groove 19-2, so that the control contact 20 can be conveniently fixed. The top of the fixing ring 19-4 is opened with a second coil spring fixing groove 19-12 for fixing the outer fixing end of the coil spring 10. The interior of the retainer ring 19-4 is used to mount the dial of the cam screw 18.
As shown in FIG. 14, the cam screw 18 includes a first shaft end 18-1, a second thread form 18-2, a rotating disc 18-3, and a second shaft end 18-4. The first shaft end 18-1 is matched with a bearing in the first screw rod supporting seat 19-3, and the second shaft end 18-4 is matched with a bearing in the second screw rod supporting seat 19-6 to support the movement of the cam screw rod. The dial 18-3 is coaxial with the second thread formation 18-2 and moves with the shaft. The inside of the rotary disk 18-3 is provided with a first coil spring fixing groove 18-5. The periphery of the rotary disk 18-3 is provided with a movable contact 18-6. The turntable 18-3 is composed of two disks, one large and one small. The first coil spring fixing groove 18-5 is located on the small disk and the moving contact 18-6 is located on the large disk.
As shown in fig. 11, 12, 14, 15, and 17, the turntable 18-3 is installed in the fixed ring 19-4. The inner fixing end 10-2 of the coil spring 10 is fitted and fixed to the first coil spring fixing groove 18-5, and the outer fixing end 10-1 is fitted and fixed to the second coil spring fixing groove 19-12 of the screw holder 19. In the initial state, the coil spring 10 is in the wound state. The first thread formation 17-2 of the moving screw 17 is in co-operative engagement with the second thread formation 18-2 of the cam screw 18.
As shown in fig. 16, the front end float 12 includes a main housing 12-6, the main housing 12-6 is provided with a fifth bolt hole 12-1 and a water pipe 12-2, the main housing 12-6 is internally provided with a solenoid valve fixing seat 12-3 and a control panel base 12-4, and the top is provided with a CTD fixing hole 12-5. The fifth bolt hole 12-1 is matched with the third bolt hole 9-5 in the bottom end cover 9, the water through pipe 12-2 is connected with the electromagnetic valve 13, the front end floater 12 is provided with four water through pipes in total, the upper side is provided with two water through pipes, and the lower side is provided with two electromagnetic valves 13. Control panel 16 is threadably secured to control panel base 12-4. The CTD sensor 14 is hermetically connected to the CTD fixing hole 12-5 by a packing 15.
As shown in fig. 12 and 18, the control contact 20 is fixed in the control contact slot 19-2 of the screw base 19, and the electric wire connected to the lead 20-1 of the control contact 20 is connected to the control board 16. When the movable contact 18-6 on the rotary disk 18-3 of the cam screw 18 moves to the bottom along with the rotation of the rotary disk, it contacts with the control contact 20 to generate a contact signal, and the contact signal is transmitted to the control board 16 through the electric wire.
The invention relates to a jettisonable underwater thermohaline depth measuring device carried on an underwater vehicle, which has the following working principle in detail: the device is mounted on an underwater vehicle, one end of a twisted-pair umbilical cable 5 is connected with a CTD sensor 14 inside a front end floater 12, the other end of the twisted-pair umbilical cable enters a bottom end cover 9 through a watertight joint hole 19-1 in a screw rod seat 19 and is wound on the outer wall of a supporting tube 19-10 of the screw rod seat 19, then sequentially penetrates through a wire groove 6-2 in an outer wall plate 6, a threading hole 1-5 in a rear end floater 1 and a twisted-pair fixing port 1-3, is led to the bottom of the rear end floater 1 through a cable groove 7-7, then is wound to a front wing plate end shell 7-1 from the bottom of the rear end floater 1 forward, and finally is connected with a receiving end on the underwater vehicle. Before launching, the splitting shell 7 hooks the connecting spring 8 through the hook 7-3 at the end of the connecting rod 7-2, the splitting shell is locked, the splitting shell 7 is wound and fixed outside the rear end floater 1 through the twisted umbilical cable 5 on the outer side, and the splitting shell and the front end floater 12 form a streamline shape together, so that the splitting shell can be launched out through the launching tube. In an initial state, the cam screw 18 is acted by the restoring force of the coil spring 10, the main rod body 21-4 of the top end cover 21 is matched with the lower end of the movable screw 17 to prop against the telescopic leather bag 19-11 of the screw seat 19 to resist the restoring force of the coil spring 10, and the rod head 17-1 of the movable screw 17 props against the lower end face of the electromagnetic valve fixing seat 12-3 in the front end floater 12 to prevent the movable screw 17 from moving downwards and generate a contact signal in advance. When transmitting, the front end float 12 is used as the transmitting front end, the rear end float 1 is used as the transmitting rear end, the separated transmitting pipe is transmitted out, the CTD sensor 14 starts to work, the measured data is synchronously transmitted into the underwater vehicle through the double-twisted umbilical cable 5, the double-twisted umbilical cable 5 is wound to the front wing plate end shell 7-1 from the bottom of the rear end float 1, therefore, the double-twisted umbilical cable 5 outside the front wing plate end shell 7-1 is firstly loosened, the stamp hole connecting wire 7-4 is arranged in the middle of the split shell 7, the double-twisted umbilical cable 5 outside the rear wing plate end shell 7-6 is not separated, the rear wing plate end shell 7-6 of the split shell 7 is fixed, the front wing plate 3 on the outer wall plate 6 starts to move outwards under the action of the magnets with the same poles repelling each other, the outwards force is applied to the front wing plate end shell 7-1, the front wing plate end shell 7-1 is not bound by the double-twisted umbilical cable 5, under the action of water flow, the front wing plate end shell 7-1 is broken and falls off at the position of the stamp hole connecting line 7-4, and simultaneously drives the hook 7-3 of the splitting shell 7 to be unhooked from the connecting spring 8. Along with the whole desquamation of twisted umbilical cable 5, back pterygoid lamina end casing 7-6 also all breaks away from thereupon, and preceding pterygoid lamina 3 and the constraint of back pterygoid lamina 22 on the outer wallboard 6 do not split the shell, under the magnet effect that homopolar repulsion, and the outside motion, when pterygoid lamina drive elastic support 4 moves to the constant head tank in, the pterygoid lamina is fixed. At the same time, the hydraulic action, instead of the action of the top end cap 21, counteracts the force of the coil spring 10 on the moving screw 17. Because the buoyancy of the floater formed by the rear end floater 1, the top end cover 21 and the outer wall plate 6 is larger than the gravity, the rear end floater 1 floats above the propeller of the underwater vehicle under the action of the front wing plate and the rear wing plate, and the cable is prevented from twisting in the propeller.
With the falling of the double-twisted umbilical cable 5 from the support tube 19-10 of the screw seat 19, the head floating body formed by the front end float 12, the screw seat 19 and the bottom end cover 9 continues to float upwards, the water pressure is gradually reduced in the floating process, the telescopic leather bag 19-11 expands to drive the movable screw 17 to move downwards, meanwhile, under the action of the restoring force of the coil spring 10, the rotating disc 18-3 of the cam screw 18 rotates anticlockwise to drive the second thread structure on the cam screw 18 to rotate, the second thread structure drives the movable screw 17 to continue to move downwards through the first thread structure 17-2 on the movable screw 17, and when the front end float 12 floats upwards to a set water depth, the movable contact 18-6 of the cam screw 18 is combined with the control contact 20 to generate a contact signal. The micro change of the telescopic leather bag 19-11 can be amplified through the cam screw 18, so that the rotary disc is driven to rotate, and the combination of the movable contact and the control contact is realized.
In order to prevent the control contact 20 from being touched by mistake, the invention adopts the comparator to charge the capacitor, and uses the hysteresis comparator to lock the voltage, thereby improving the robustness of the system. As shown in fig. 19, the contact signal first passes through the comparator to charge the RC charging circuit, when the charging voltage reaches the trigger voltage of the hysteresis comparator, the hysteresis comparator sends a signal to the control board, and the control board 16 receives the signal to determine that the water body measurement is completed.
When the water body measuring work is finished, the control panel 16 gives a signal to the electromagnetic valve 13, the electromagnetic valve 13 acts, the water pipe 12-2 of the front end floater 12 is opened to feed water, the front end floater 12 loses water tightness, and a plurality of internal components are sunk into the sea bottom. The underwater vehicle cuts off the double-twisted umbilical cable 5, and the floater 1 at the rear end floats upwards because of no pulling force of the double-twisted umbilical cable 5. After floating to a certain depth, because the water pressure is not enough to enable the top end cover 21 of the rear end floater 1 to keep tightness with the rear end floater 1, under the action of the adjusting spring 23, the top end cover 21 of the rear end floater 1 falls off from the rear end floater 1, so that the central rod 2 also falls off, gas escapes from the bottom watertight port 1-1 of the rear end floater 1, and the rear end floater 1 also enters water and sinks into the seabed. Therefore, after the water body temperature and salt depth profile measurement is completed, the device is automatically disassembled and discarded.
The expendable underwater thermohaline depth measuring device carried on the underwater vehicle can calculate the swelling size of the telescopic leather bag in the set water depth through the internal air pressure and the external water pressure, further obtain the set depth of the movable screw rod, and further determine the initial position of the movable contact on the cam screw rod. The time for generating the contact signal is controlled by setting the initial position of the movable contact, so that the depth of the device in water is controlled, and the temperature and salt depth measurement of the section water body is completed.
Compared with the conventional float-type thermohaline depth measuring device, the disposable underwater thermohaline depth measuring device carried on the underwater vehicle has the advantages of high concealment and difficulty in exposing a target. Compared with the conventional CTD externally arranged on an underwater vehicle, the device provided by the invention has stronger maneuverability. When the conventional CTD externally arranged on an underwater vehicle measures each time, the CTD needs to float up or submerge to a corresponding area through the vehicle, and the energy consumption is large. The device provided by the invention can automatically complete the measurement of the temperature and the salt depth of the water body section without floating or submerging an underwater vehicle and only by transmitting the device to a corresponding area, and almost no extra energy consumption is caused. In addition, the device of the invention has small volume and low cost, is discarded after use, is a disposable consumption product and does not need later maintenance and repair.
Claims (8)
1. A jettisonable underwater thermohaline depth measuring device carried on an underwater vehicle is characterized in that: the device comprises a split shell, a front end floater, a rear end floater, a CTD sensor and a control panel; the lower part of the front end floater is connected with a bottom end cover; a splitting shell is arranged outside the rear end floater and is connected with the bottom end cover through a connecting mechanism; the CTD sensor is connected to the top of the front end floater in a watertight manner; a pressure trigger mechanism is arranged in the front end floater; the pressure trigger mechanism comprises a screw rod seat, a movable screw rod and a cam screw rod; the screw rod seat is sequentially connected with the bottom end cover and the front end floater in a sealing manner to form a watertight space; the middle part of the screw rod seat is provided with a through hole, and the lower part of the through hole is sealed by a flexible cover; the movable screw is arranged in the through hole; the cam screw is arranged on the upper end surface of the screw seat and is in transmission connection with the movable screw; the control panel is arranged in the watertight space; the cam screw comprises a shaft and a thread structure arranged on the shaft; two ends of the shaft are fixed on the screw rod seat through screw rod supporting seats; a fixing ring is arranged between one of the screw rod supporting seats and the thread structure, and a turntable which is coaxial with the thread structure is arranged in the fixing ring; the turntable is connected with the fixed ring through a coil spring; a movable contact is arranged on the turntable; the screw rod seat is provided with a control contact; the control contact is electrically connected with the control board; the movable contact is matched with the control contact to generate a contact signal.
2. The disposable underwater thermohaline depth measurement device mounted on an underwater vehicle of claim 1, wherein: the inner wall of the rear end floater is provided with a spring base; a central rod is arranged in the middle of the rear end floater; the upper portion of well core rod is equipped with the spring support, be equipped with adjusting spring between spring support and the spring base.
3. The disposable underwater thermohaline depth measurement device mounted on an underwater vehicle of claim 1, wherein: the top of the rear end floater is in watertight connection with a top end cover; the top end cover is provided with a main rod body, and the upper end of the main rod body is provided with a buffer groove; the buffer groove is matched with the lower end of the movable screw rod.
4. The disposable underwater thermohaline depth measurement device mounted on an underwater vehicle of claim 1, wherein: the split shell is wound and fixed outside the rear end floater through an umbilical cable and consists of two parts of shaft splitting structures; wherein, stamp hole connecting lines are arranged on the two parts of the shaft splitting structures along the circumferential direction.
5. The disposable underwater thermohaline depth measurement device mounted on an underwater vehicle of claim 4, wherein: the umbilical cable is characterized in that a threading hole is formed in the side wall of the rear-end floater, one end of the umbilical cable is connected with the CTD sensor inside the front-end floater, and the other end of the umbilical cable penetrates out of the threading hole and then is wound to the upper portion of the splitting shell from the bottom of the rear-end floater to be connected with an underwater vehicle.
6. The disposable underwater thermohaline depth measurement device mounted on an underwater vehicle of claim 1, wherein: the rear end floater is provided with an outer wall plate; a plurality of wing plate grooves are formed along the circumferential direction of the outer wall plate; wing plates are arranged in the wing plate grooves; one end of the wing plate is rotatably connected in the wing plate groove; the wing plate groove and the wing plate are respectively provided with magnets with the same polarity.
7. The disposable underwater thermohaline depth measurement device mounted on an underwater vehicle of claim 1, wherein: the connecting mechanism comprises a hook arranged at the upper end of the splitting shell and a connecting spring fixed on the bottom end cover; the free end of the connecting spring is hung on the hook.
8. The disposable underwater thermohaline depth measurement device mounted on an underwater vehicle of claim 1, wherein: the side wall of the front end floater is provided with a plurality of water through pipes, the water through pipes are provided with electromagnetic valves, and the electromagnetic valves are electrically connected with the control panel.
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| US6786087B2 (en) * | 2002-03-25 | 2004-09-07 | Council Of Scientific & Industrial Research | Controlled thruster driven profiler for coastal waters |
| CN103616529A (en) * | 2013-12-13 | 2014-03-05 | 国家海洋技术中心 | Expendable type electromagnetic ocean current profile measuring probe |
| CN106767727A (en) * | 2017-03-02 | 2017-05-31 | 山东省科学院海洋仪器仪表研究所 | Jettison formula measuring probe automatic release device |
| CN109164469B (en) * | 2018-10-15 | 2023-02-21 | 中国船舶重工集团公司第七0五研究所 | Small-size light big dipper beacon body that can safely separate of quality |
| CN213874315U (en) * | 2020-12-31 | 2021-08-03 | 国家海洋技术中心 | Air-drop type ocean data measuring device and air-drop system |
| CN114572352B (en) * | 2022-05-07 | 2022-07-26 | 山东省科学院海洋仪器仪表研究所 | Remote automatic laying device of underwater detection platform and automatic laying type detection platform |
| CN114604366B (en) * | 2022-05-16 | 2022-07-26 | 山东省科学院海洋仪器仪表研究所 | Automatic separation device for flow guide shell of self-sinking and floating profile detection buoy and flow guide shell |
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