Buoyancy adjustment system and control method thereof, and micro lightweight underwater section platform

Abstract

The present disclosure provides a buoyancy adjusting system and a control method thereof, and a micro lightweight underwater section platform. The buoyancy adjusting system is suitable for the micro lightweight underwater section platform, and comprises: an inner oil bag arranged inside a shell of the micro lightweight underwater section platform; an outer oil bag arranged outside the shell; a first end of a driving device is connected with the inner oil bag, and a second end of the driving device is connected with the outer oil bag; a steering device is arranged between the driving device and the outer oil bag, and a control end of the steering device is communicated with the first end of the driving device; in response to the driving device entering a first working mode, a pressure of the control end is less than or equal to a first threshold value, the steering device is turned on in a forward direction, and hydraulic oil in the inner oil bag flows into the outer oil bag through the first oil path via the steering device; in response to the driving device entering a second working mode, the pressure of the control end is greater than the first threshold value, the steering device is turned on in a reverse direction, and the hydraulic oil in the outer oil bag flows into the inner oil bag via the steering device through the second oil path.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of underwater exploration, and particularly relates to a buoyancy adjusting system, a control method thereof and a micro lightweight underwater profiling platform. BACKGROUND

[0002] The underwater profiling platform is one of the main means for human beings to explore and develop the ocean. The buoyancy adjusting system is the power source for the underwater profiling platform to perform the sinking and floating movement, and the mass and volume of the buoyancy adjusting system account for the highest proportion in the underwater profiling platform.

[0003] However, the related buoyancy adjusting system has the disadvantages of heavy mass and large volume, so that the underwater profiling platform has the disadvantages of complex structure, large mass and volume, high cost, short operation time, and difficult deployment. SUMMARY

[0004] Therefore, the present disclosure provides a buoyancy adjusting system suitable for a micro lightweight underwater profiling platform. The buoyancy adjusting system comprises an inner oil bag arranged inside a shell of the micro lightweight underwater profiling platform, an outer oil bag arranged outside the shell of the micro lightweight underwater profiling platform, a driving device, a first end of the driving device being connected to the inner oil bag, a second end of the driving device being connected to the outer oil bag, and a steering device arranged between the driving device and the outer oil bag, a control end of the steering device being communicated with the first end of the driving device, in response to the driving device entering a first working mode, a pressure of the control end being less than or equal to a first threshold value, the steering device being turned on in a forward direction, and hydraulic oil in the inner oil bag flowing into the outer oil bag through a first oil path via the steering device; in response to the driving device entering a second working mode, the pressure of the control end being greater than the first threshold value, the steering device being turned on in a reverse direction, and the hydraulic oil in the outer oil bag flowing into the inner oil bag via the steering device through a second oil path.

[0005] Optionally, the second oil path comprises an overflow valve, the overflow valve allowing the hydraulic oil of the outer oil bag to flow into the inner oil bag via the second oil path when a pressure flowing to the overflow valve is greater than a second threshold value, and the second threshold value is greater than the first threshold value.

[0006] Optionally, the first oil path comprises a first one-way valve configured to allow the hydraulic oil of the inner oil bag to unidirectionally flow into the outer oil bag via the first oil path.

[0007] Optionally, the buoyancy adjusting system further comprises a third oil path, a first end of the third oil path is arranged between the driving device and the steering device, a second end of the third oil path is communicated with the inner oil bag, in response to the driving device entering the second working mode, the hydraulic oil in the inner oil bag flows into the driving device through the third oil path, so that the pressure of the first end of the driving device increases to be greater than the first threshold value.

[0008] Optionally, the third oil path comprises a second one-way valve configured to allow the hydraulic oil in the inner oil bag to flow into the driving device through the third oil path in a one-way manner, and the second one-way valve is closed in the case that the hydraulic oil in the outer oil bag flows into the inner oil bag through the steering device.

[0009] Optionally, the steering device is a hydraulic control one-way valve.

[0010] Optionally, the driving device comprises a bidirectional plunger pump arranged between the inner oil bag and the steering device, and an electric motor connected with the bidirectional plunger pump, in response to the electric motor driving the bidirectional plunger pump to rotate in a first direction, the driving device enters the first working mode, and in response to the electric motor driving the bidirectional plunger pump to rotate in a second direction opposite to the first direction, the driving device enters the second working mode.

[0011] The present disclosure also provides a micro and lightweight underwater profile platform, comprising the buoyancy adjusting system as described above, a shell, the inner oil bag is arranged inside the shell, a fairing connected with the shell, and the outer oil bag is arranged outside the shell and located in the fairing.

[0012] The present disclosure also provides a control method suitable for the buoyancy adjusting system as described above, characterized in that the method comprises: controlling the driving device to enter the second working mode, so that the pressure of the control end is greater than the first threshold value, the steering device is reversely conducted, the hydraulic oil in the outer oil bag flows into the inner oil bag through the second oil path, and the buoyancy adjusting system is submerged; and controlling the driving device to enter the first working mode, so that the pressure of the control end of the steering device is less than the first threshold value, the steering device is positively conducted, the hydraulic oil in the inner oil bag flows into the outer oil bag through the first oil path, and the buoyancy adjusting system is floated.

[0013] Optionally, after the driving device is controlled to enter the second working mode, before the pressure of the control end increases to be greater than the first threshold value, the hydraulic oil in the inner oil bag flows into the driving device through the third oil path.

[0014] According to the embodiment of the present disclosure, by setting the driving device in different working modes, the pressure of the control end of the steering device can be controlled, so that the steering device can be turned on in the positive direction or the reverse direction, and the control hydraulic oil can flow from the inner oil bag to the outer oil bag or from the outer oil bag to the inner oil bag. Without setting a complex oil circuit, the oil discharge and oil return can be realized by the driving device and the steering device, and the lightweight level of the buoyancy adjusting system can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and other objects, features and advantages of the present disclosure will become more apparent from the following description of embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1 The working principle diagram of the buoyancy adjusting system according to the embodiment of the present disclosure is schematically shown.

[0017] Figure 2 The side view of the buoyancy adjusting system according to the embodiment of the present disclosure is schematically shown.

[0018] Figure 3 The side view of the micro lightweight underwater profile platform according to the embodiment of the present disclosure is schematically shown.

[0019] Figure 4 The cross-sectional view of the hydraulic valve block according to the embodiment of the present disclosure is schematically shown.

[0020] REFERENCE NUMERALS

[0021] 1, buoyancy adjusting system; 11, inner oil bag; 12, outer oil bag; 13, driving device; 131, bidirectional plunger pump; 132, motor; 14, steering device; 15, overflow valve; 16, first check valve; 17, second check valve; 18, inner oil bag adapter; 2, shell; 3, fairing; 4, antenna; 5, control device; 6, battery; 7, hydraulic valve block; L1, first oil circuit; L2, second oil circuit; L3, third oil circuit; 11K, inner oil bag mounting hole; 12K, outer oil bag mounting hole; 131K, bidirectional plunger pump mounting hole; 14K, steering device mounting hole; 15K, overflow valve mounting hole; 16K, first check valve mounting hole; 17K, second check valve mounting hole; K1, first process hole; K2, second process hole; K3, third process hole; K4, fourth process hole; K5, fifth process hole. DETAILED DESCRIPTION

[0022] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it is to be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present disclosure. In the following detailed description of the embodiments of the present disclosure, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. However, it will be apparent to those skilled in the art that the embodiments of the present disclosure can be practiced without these specific details. In other instances, well-known structures and techniques have been omitted to avoid obscuring the concepts of the present disclosure.

[0023] The terms used herein are merely used to describe specific embodiments and are not intended to limit the present disclosure. The terms "include", "comprise" and the like as used herein indicate the presence of the features, steps, operations and / or components, but do not exclude the presence or addition of one or more other features, steps, operations or components.

[0024] All terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of the specification, and should not be interpreted in an idealized or overly formal manner.

[0025] In the case of using expressions similar to "at least one of A, B, and C, etc.", it should be generally interpreted as including one or more of the items enumerated in the list (e.g., "a system having at least one of A, B, and C" should include, but not be limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B together, a system having A and C together, a system having B and C together, and / or a system having A, B, and C together, etc.).

[0026] Figure 1 A working principle diagram of a buoyancy adjusting system according to an embodiment of the present disclosure is schematically shown. Figure 2 A side view of a buoyancy adjusting system according to an embodiment of the present disclosure is schematically shown. Figure 3 A side view of a micro-lightweight underwater section platform according to an embodiment of the present disclosure is schematically shown.

[0027] As Figures 1-3 shown, an embodiment of the present disclosure provides a buoyancy adjusting system 1. The buoyancy adjusting system 1 can be used for a micro-lightweight underwater section platform. The buoyancy adjusting system 1 can include an inner oil bag 11, an outer oil bag 12, a driving device 13, and a steering device 14. The inner oil bag 11 is arranged inside a shell 2 of the micro-lightweight underwater section platform. The outer oil bag 12 is arranged outside the shell 2 of the micro-lightweight underwater section platform. A first end (e.g., a P1 end as Figure 1 shown) of the driving device 13 is connected with the inner oil bag 11. A second end (e.g., a P2 end as Figure 1 shown) of the driving device 13 is connected with the outer oil bag 12.

[0028] The steering device 14 can be disposed between the drive unit 13 and the external oil bladder 12, and the control end of the steering device 14 is connected to the first end of the drive unit 13 (e.g., Figure 1 The P1 terminal shown is connected. In response to the drive unit 13 entering the first operating mode, when the pressure at the control terminal is less than or equal to a first threshold, the steering device 14 is forward-biased, and the hydraulic oil in the inner oil bladder 11 flows into the outer oil bladder 12 through the first oil passage L1 via the steering device 14, achieving oil discharge. In response to the drive unit 13 entering the second operating mode, when the pressure at the control terminal is greater than the first threshold, the steering device 14 is reverse-biased, and the hydraulic oil in the outer oil bladder 12 flows into the inner oil bladder 11 through the steering device 14 via the second oil passage L2, achieving oil return. The inner oil bladder 11 can be used to store low-pressure oil. The outer oil bladder 12 can be exposed to external seawater. When the volume of the outer oil bladder 12 increases, the miniature lightweight underwater profile platform rises. When the volume of the outer oil bladder 12 decreases, the miniature lightweight underwater profile platform submerges. The first oil passage L1 and the second oil passage L2 enable bidirectional flow of hydraulic oil between the inner oil bladder 11 and the outer oil bladder 12.

[0029] Furthermore, when the drive unit 13 enters the first operating mode, the pressure at the first end of the drive unit 13 is less than the pressure at the second end of the drive unit 13, and the pressure at the control end is less than the pressure at the second end of the drive unit 13. The steering device 14 is forward-biased, and the hydraulic oil in the inner oil bladder 11 flows into the outer oil bladder 12 through the first oil passage L1 via the steering device 14. When the drive unit 13 enters the second operating mode, the pressure at the first end of the drive unit 13 gradually increases. When the pressure at the first end of the drive unit 13 exceeds a first threshold, the pressure at the control end exceeds the first threshold, and the steering device 14 is reverse-biased, and the hydraulic oil in the outer oil bladder 12 flows into the inner oil bladder 11 through the second oil passage L2 via the steering device 14.

[0030] According to embodiments of this disclosure, by setting the drive device 13 to different operating modes, the pressure at the control end of the steering device 14 can be controlled, thereby enabling the steering device 14 to conduct forward or reverse, and controlling the flow of hydraulic oil from the inner oil bladder 11 to the outer oil bladder 12 or from the outer oil bladder 12 to the inner oil bladder 11. Without the need for complex oil circuits, oil discharge and return are achieved through the drive device 13 and the steering device 14, which improves the lightweight level of the buoyancy adjustment system 1.

[0031] In some embodiments, the second oil path L2 can include an overflow valve 15. An inlet of the overflow valve 15 can be communicated with the driving device 13, and an outlet of the overflow valve 15 can be communicated with the inner oil bag 11. In a case that a pressure flowing to the overflow valve 15 is greater than a second threshold value, i.e., a case that a pressure at the inlet of the overflow valve 15 is greater than the second threshold value, the overflow valve 15 allows the hydraulic oil of the outer oil bag 12 to flow into the inner oil bag 11 via the second oil path L2 to realize oil return. The second threshold value can be greater than the first threshold value, so as to guarantee that the pressure at the control end of the steering device 14 is greater than the first threshold value, and the steering device 14 is in the reverse conduction state. The second threshold value can be set to 1.2 MPa. The first threshold value can be set according to previous experience.

[0032] In some embodiments, the first oil path L1 can include a first one-way valve 16. An inlet of the first one-way valve 16 can be communicated with the inner oil bag 11, and an outlet of the first one-way valve 16 can be communicated with the driving device 13. When the pressure at the inlet is slightly higher than the pressure at the outlet, the first one-way valve 16 is communicated, and when the pressure at the outlet is slightly higher than the pressure at the inlet, the first one-way valve 16 is cut off. The first one-way valve 16 can be used to allow the hydraulic oil of the inner oil bag 11 to flow into the outer oil bag 12 via the first oil path L1 in a one-way manner. In the oil return stage, the first one-way valve 16 can prevent the hydraulic oil of the outer oil bag 12 from flowing into the inner oil bag 11 via the first branch, so that the hydraulic oil of the outer oil bag 12 only flows into the inner oil bag 11 through the second branch.

[0033] In some embodiments, the buoyancy adjusting system 1 can further include a third oil path L3. A first end (e.g., an upper end of the third oil path L3 as shown) of the third oil path L3 is communicated with the inner oil bag 11. A second end (e.g., a lower end of the third oil path L3 as shown) of the third oil path L3 is arranged between the driving device 13 and the steering device 14. Figure 1 Figure 1 In response to the driving device 13 entering the second working mode, the hydraulic oil of the inner oil bag 11 flows into the driving device 13 via the third oil path L3, so that the pressure at the first end of the driving device 13 gradually increases to be greater than the first threshold value. In the case that the driving device 13 enters the second working mode, the inner oil bag 11 delivers the hydraulic oil to the driving device 13 through the third oil path L3 to meet the power requirement of the driving device 13, until the pressure at the first end of the driving device 13 increases to be greater than the first threshold value.

[0034] ​In some embodiments, the third oil path L3 can include a second one-way valve 17. An inlet of the second one-way valve 17 can be in communication with the inner oil bag 11, and an outlet of the second one-way valve 17 can be in communication with the driving device 13. The outlet of the second one-way valve 17 can be located at the second end of the third oil path L3. The inlet of the second one-way valve 17 can be located at the first end of the third oil path L3. When the pressure at the inlet is slightly higher than the pressure at the outlet, the second one-way valve 17 is open; when the pressure at the outlet is slightly higher than the pressure at the inlet, the second one-way valve 17 is closed. The second one-way valve 17 can be used to allow hydraulic oil in the inner oil bag 11 to flow into the driving device 13 via the third oil path L3 in a one-way manner. In the case where the hydraulic oil in the outer oil bag 12 flows into the inner oil bag 11 via the steering device 14, the second one-way valve 17 is closed. After the driving device 13 enters the second working mode, the inner oil bag 11 delivers hydraulic oil to the driving device 13 through the third oil path L3 to meet the power requirement of the driving device 13. After the pressure at the first end of the driving device 13 increases to be greater than the first threshold value, the steering device 14 reversely conducts, the pressure at the second end of the driving device 13 is the external pressure, i.e., the pressure at the second end of the third oil path L3 (the lower end of the third oil path L3 as shown in the figure) is the external pressure, so that the pressure at the second end of the third oil path L3 is greater than the pressure at the first end of the third oil path L3, the second one-way valve 17 is closed, and the hydraulic oil is prevented from flowing back to the inner oil bag 11 from the third oil path L3. Figure 1

[0035] In some embodiments, the steering device 14 can be a hydraulic control one-way valve, so as to reversely conduct the steering device when the pressure at the control end of the hydraulic control one-way valve is greater than the first threshold value.

[0036] In some embodiments, the driving device 13 can include a bidirectional plunger pump 131 and a motor 132. The motor 132 can be a brushless motor 132. The bidirectional plunger pump 131 can be arranged between the inner oil bag 11 and the steering device 14. The motor 132 can be connected with the bidirectional plunger pump 131, for example, the motor 132 can be rigidly connected with the bidirectional plunger pump 131. The motor 132 drives the driving device 13 to enter the first working mode by driving the bidirectional plunger pump 131 to rotate in a first direction (for example, a clockwise direction). The motor 132 drives the driving device 13 to enter the second working mode by driving the bidirectional plunger pump 131 to rotate in a second direction opposite to the first direction (for example, a counterclockwise direction). Pressure control is achieved by using the bidirectional plunger pump 131, hydraulic reversing can be achieved, heavy hydraulic components can be reduced, and the goal of miniaturization and light weight can be achieved.

[0037] In detail, in the first working mode, the motor 132 is controlled to rotate in the clockwise direction, and the bidirectional plunger pump 131 follows the motor 132 to rotate in the clockwise direction, at this time, the first end of the bidirectional plunger pump 131 (for example, the left end of the bidirectional plunger pump 131 as shown in the figure) is the inlet of the bidirectional plunger pump 131, and the second end of the bidirectional plunger pump 131 (for example, the right end of the bidirectional plunger pump 131 as shown in the figure) is the outlet of the bidirectional plunger pump 131. The bidirectional plunger pump 131 is in the first working mode, and the driving device 13 is in the first working mode. Figure 1 ​As shown in the P1 end) pressure decreases, the first end of the bidirectional plunger pump 131 is the oil suction port, the first one-way valve 16 is connected, and the hydraulic oil enters the bidirectional plunger pump 131 through the first one-way valve 16. Under the clockwise driving of the motor 132, the second end (as shown in the P2 end) of the bidirectional plunger pump 131 is the oil outlet port, the second one-way valve 17 is cut off, and the hydraulic oil enters the bidirectional plunger pump 131 through the second one-way valve 17. Under the counterclockwise rotation of the motor 132, the first end (as shown in the P1 end) of the bidirectional plunger pump 131 is the oil outlet port, and the first one-way valve 16 is cut off. Figure 1 As shown in the P2 end) pressure increases, the second end of the bidirectional plunger pump 131 can be the oil outlet port, and the second one-way valve 17 is cut off. When the second end (as shown in the P2 end) of the bidirectional plunger pump 131 is the oil outlet port, the second one-way valve 17 is cut off, and the hydraulic oil flows from the inner oil bag 11 to the outer oil bag 12. Figure 1 As shown in the P2 end) pressure increases to exceed the pressure of the external water, the steering device 14 is normally on, and the hydraulic oil flows from the inner oil bag 11 to the outer oil bag 12.

[0038] In detail, in the second working mode, the control motor 132 rotates counterclockwise, and the bidirectional plunger pump 131 rotates counterclockwise along with the motor 132. At this time, the second end (as shown in the P2 end) of the bidirectional plunger pump 131 is the oil suction port, the second one-way valve 17 is connected, and the hydraulic oil enters the bidirectional plunger pump 131 through the second one-way valve 17. Under the counterclockwise rotation of the motor 132, the first end (as shown in the P1 end) of the bidirectional plunger pump 131 is the oil outlet port, and the first one-way valve 16 is cut off. Figure 1 As shown in the P2 end) pressure decreases, the second end of the bidirectional plunger pump 131 is the oil suction port, the second one-way valve 17 is connected, and the hydraulic oil enters the bidirectional plunger pump 131 through the second one-way valve 17. Under the counterclockwise rotation of the motor 132, the first end (as shown in the P1 end) of the bidirectional plunger pump 131 is the oil outlet port, and the first one-way valve 16 is cut off. Figure 1 As shown in the P1 end) pressure increases, the first end of the bidirectional plunger pump 131 is the oil outlet port, and the first one-way valve 16 is cut off. The first end (as shown in the P1 end) of the bidirectional plunger pump 131 is the oil outlet port, and the first one-way valve 16 is cut off. Figure 1 As shown in the P1 end) pressure increases to exceed the first threshold value of the control end of the steering device 14, that is, the pressure of the control end of the steering device 14 exceeds the first threshold value, the steering device 14 is reversely on. Due to the existence of the overflow valve 15, the first end (as shown in the P1 end) of the bidirectional plunger pump 131 is always maintained at a high pressure, so that the steering device 14 is maintained reversely on. After the steering device 14 is reversely on, the pressure of the second end (as shown in the P2 end) of the bidirectional plunger pump 131 is equal to the pressure of the external water. Figure 1 As shown in the P2 end) pressure decreases, the second end of the bidirectional plunger pump 131 is the oil suction port, the second one-way valve 17 is connected, and the hydraulic oil enters the bidirectional plunger pump 131 through the second one-way valve 17. Under the counterclockwise rotation of the motor 132, the first end (as shown in the P1 end) of the bidirectional plunger pump 131 is the oil outlet port, and the first one-way valve 16 is cut off. Figure 1 As shown in the P2 end) pressure decreases, the second end of the bidirectional plunger pump 131 is the oil suction port, the second one-way valve 17 is connected, and the hydraulic oil enters the bidirectional plunger pump 131 through the second one-way valve 17. Under the counterclockwise rotation of the motor 132, the first end (as shown in the P1 end) of the bidirectional plunger pump 131 is the oil outlet port, and the first one-way valve 16 is cut off.

[0039] As shown in the P2 end) pressure decreases, the second end of the bidirectional plunger pump 131 is the oil suction port, the second one-way valve 17 is connected, and the hydraulic oil enters the bidirectional plunger pump 131 through the second one-way valve 17. Under the counterclockwise rotation of the motor 132, the first end (as shown in the P1 end) of the bidirectional plunger pump 131 is the oil outlet port, and the first one-way valve 16 is cut off. Figure 3 As shown in the P2 end) pressure decreases, the second end of the bidirectional plunger pump 131 is the oil suction port, the second one-way valve 17 is connected, and the hydraulic oil enters the bidirectional plunger pump 131 through the second one-way valve 17. Under the counterclockwise rotation of the motor 132, the first end (as shown in the P1 end) of the bidirectional plunger pump 131 is the oil outlet port, and the first one-way valve 16 is cut off.

[0040] The shell 2 can be a pressure-resistant shell 2, for example, made of lightweight and seawater corrosion-resistant aluminum alloy or carbon fiber material to meet the requirements of exposure to seawater and bearing seawater pressure. By setting the driving device 13 in different working modes, the micro lightweight underwater profile platform can be driven to float or dive.

[0041] Figure 4 A cross-sectional view of a hydraulic valve block according to an embodiment of the present disclosure is schematically shown.

[0042] As shown in Figure 2 and Figure 4 In some embodiments, the micro lightweight underwater profile platform can further include a hydraulic valve block 7. The hydraulic valve block 7 can be arranged at the bottom of the shell 2 and form a sealed space with the shell 2. The top of the hydraulic valve block 7 can be provided with a sealing groove for placing a sealing ring. A sealing ring can be arranged between the shell 2 and the hydraulic valve block 7. The pressure inside the sealed space can be less than the pressure outside the sealed space, for example, the pressure inside the sealed space can be -0.4 bar, so that the pressure inside the sealed space is less than the pressure of seawater. By arranging the hydraulic valve block 7 and forming a sealed space between the hydraulic valve block 7 and the shell 2, the mass and volume of the micro lightweight underwater profile platform can be reduced.

[0043] Further, the top of the hydraulic valve block 7 can be provided with an inner oil bag mounting hole 11 for mounting an inner oil bag adapter 18, a first one-way valve mounting hole 16K for mounting a first one-way valve 16, a second one-way valve mounting hole 17K for mounting a second one-way valve 17, a bidirectional plunger pump mounting hole 131K for mounting a bidirectional plunger pump 131, and an overflow valve mounting hole 15K for mounting an overflow valve 15. The bottom of the hydraulic valve block 7 can be provided with an outer oil bag mounting hole 12K for mounting an outer oil bag 12 and a steering device mounting hole 14K for mounting a steering device 14. The inner oil bag adapter 18 can be communicated with an inner oil bag 11 arranged in the accommodation space through a hose.

[0044] A first process hole K1 can be opened on the left side of the hydraulic valve block 7. The first process hole K1 can be used to connect the inner oil bladder mounting hole 11, the first check valve mounting hole 16K, and the double-acting piston pump mounting hole 131K. A second process hole K2 is opened on the right side of the hydraulic valve block 7. The second process hole K2 is used to connect the relief valve mounting hole 15K, the second check valve mounting hole 17K, and the double-acting piston pump mounting hole 131K. A third process hole K3 is also opened on the right side of the hydraulic valve block 7. The third process hole K3 is used to connect the relief valve mounting hole 15K, the second check valve mounting hole 17K, the double-acting piston pump mounting hole 131K, and the steering device mounting hole 14K. A fourth process hole K4 is also opened on the right side of the hydraulic valve block 7. The fourth process hole K4 is used to connect the first check valve mounting hole 16K, the second check valve mounting hole 17K, and the steering device mounting hole 14K. A fifth process hole K5 is also opened on the left side of the hydraulic valve block 7. The fifth process hole K5 is used to connect the external oil bladder mounting hole 12K and the steering device mounting hole 14K.

[0045] Furthermore, through the first process hole K1, the second process hole K2, the third process hole K3, the fourth process hole K4, and the fifth process hole K5, the inner oil bladder 11 and the first end of the first one-way valve 16 (such as...) can be... Figure 1 The upper end of the first check valve 16 shown), the first end of the relief valve 15 (as shown) Figure 1 The upper end of the overflow valve 15 shown), the first end of the second check valve 17 (as shown) Figure 1 The upper end of the second check valve 17 (as shown) is connected; the second end of the first check valve 16 (as shown) is connected. Figure 1 The lower end of the first check valve 16 shown), and the second end of the relief valve 15 (as shown) Figure 1 The lower end of the overflow valve 15 shown), the control end of the steering device 14, and the first end P1 of the drive device 13 are connected; the second end P2 of the drive device 13 and the second end of the second check valve 17 (as shown) are connected. Figure 1 The lower end of the second one-way valve 17 shown), and the second end of the steering device 14 (as shown) Figure 1 It is connected to the left end of the steering device 14 shown.

[0046] like Figure 3 As shown, according to an embodiment of this disclosure, the miniature lightweight underwater profiling platform may further include an antenna 4, a battery 6, and a control device 5. The battery 6 can be installed in the lower middle part of the enclosed space, providing power to the various peripherals of the miniature lightweight underwater profiling platform while ensuring that the center of gravity of the miniature lightweight underwater profiling platform remains at a low position, thereby ensuring the axial stability of the miniature lightweight underwater profiling platform. The control device 5 can be installed in the upper part of the enclosed space. The antenna 4 can be installed on the top of the housing 2 and can be used for bidirectional information communication between the miniature lightweight underwater profiling platform and terminal equipment.

[0047] The embodiments of the present disclosure also provide a control method suitable for the buoyancy adjusting system 1 described above. The control method comprises: controlling the driving device 13 to enter the second working mode, so that the pressure of the control end is greater than the first threshold value, the steering device 14 is reversely conducted, the hydraulic oil in the outer oil bag 12 flows into the inner oil bag 11 through the second oil path L2, the volume of the buoyancy adjusting system 1 becomes smaller, and the buoyancy adjusting system 1 is submerged. The driving device 13 is controlled to enter the first working mode, so that the pressure of the control end of the steering device 14 is less than the first threshold value, the steering device 14 is forwardly conducted, the hydraulic oil in the inner oil bag 11 flows into the outer oil bag 12 through the first oil path L1, the volume of the buoyancy adjusting system 1 becomes larger, and the buoyancy adjusting system 1 is floated. The control method can be executed by the control device 5 described above.

[0048] In some embodiments, after the driving device 13 enters the second working mode, before the pressure of the control end increases to be greater than the first threshold value, the hydraulic oil in the inner oil bag 11 flows into the driving device 13 through the third oil path L3. When the driving device 13 enters the second working mode, the inner oil bag 11 delivers the hydraulic oil to the driving device 13 through the third oil path L3 to meet the power requirement of the driving device 13, until the pressure of the first end of the driving device 13 increases to be greater than the first threshold value.

[0049] In some embodiments, the control method further comprises: performing a vacuumizing operation on the shell 2, so that the pressure in the shell 2 is less than the pressure outside the shell 2.

[0050] Those skilled in the art can understand that the features described in various embodiments and / or claims of the present disclosure can be combined or / and integrated in various combinations, even if such combinations or integrations are not explicitly described in the present disclosure. In particular, the features described in various embodiments and / or claims of the present disclosure can be combined and / or integrated in various combinations without departing from the spirit and teachings of the present disclosure. All these combinations and / or integrations fall within the scope of the present disclosure.

[0051] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes, and are not intended to limit the scope of the present disclosure. Although each embodiment is described above separately, this does not mean that the measures in each embodiment cannot be used advantageously in combination. The scope of the present disclosure is defined by the appended claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art can make various substitutions and modifications, which all fall within the scope of the present disclosure.

Claims

1. A buoyancy adjustment system, characterized in that, The buoyancy adjusting system is suitable for a micro lightweight underwater profile platform, and the buoyancy adjusting system comprises: an inner oil bag arranged inside a shell of the micro lightweight underwater profile platform; an outer oil bag arranged outside the shell of the micro lightweight underwater profile platform; a driving device, a first end of the driving device being connected with the inner oil bag, a second end of the driving device being connected with the outer oil bag, the driving device comprising a double-acting plunger pump arranged between the inner oil bag and a steering device, and a motor connected with the double-acting plunger pump; and the steering device being arranged between the driving device and the outer oil bag, and a control end of the steering device being communicated with the first end of the driving device, in response to the motor driving the double-acting plunger pump to rotate in a first direction, the driving device entering a first working mode, a pressure of the control end being less than or equal to a first threshold value, the steering device being forwardly conducted, and hydraulic oil in the inner oil bag flowing into the outer oil bag through a first oil path via the steering device, in response to the motor driving the double-acting plunger pump to rotate in a second direction opposite to the first direction, the driving device entering a second working mode, the pressure of the control end being greater than the first threshold value, the steering device being reversely conducted, and the hydraulic oil in the outer oil bag flowing into the inner oil bag via the steering device through a second oil path.

2. The buoyancy adjustment system of claim 1, wherein, The second oil path comprises: an overflow valve, in a case that a pressure flowing to the overflow valve is greater than a second threshold value, the overflow valve allowing the hydraulic oil of the outer oil bag to flow into the inner oil bag via the second oil path, wherein the second threshold value is greater than the first threshold value.

3. The buoyancy adjustment system of claim 1, wherein, The first oil path comprises: a first one-way valve configured to allow the hydraulic oil of the inner oil bag to unidirectionally flow into the outer oil bag via the first oil path.

4. The buoyancy adjustment system of claim 1, wherein, Further comprising: a third oil path, a first end of the third oil path being arranged between the driving device and the steering device, a second end of the third oil path being communicated with the inner oil bag, in response to the driving device entering the second working mode, the hydraulic oil of the inner oil bag flowing into the driving device via the third oil path, so that the pressure of the first end of the driving device is increased to be greater than the first threshold value.

5. The buoyancy adjustment system of claim 4, wherein, The third oil path comprises: a second one-way valve configured to allow the hydraulic oil of the inner oil bag to unidirectionally flow into the driving device via the third oil path, the second one-way valve being cut off in a case that the hydraulic oil in the outer oil bag flows into the inner oil bag via the steering device.

6. The buoyancy adjustment system of claim 1, wherein, The steering device is a hydraulic control one-way valve.

7. A micro, lightweight, underwater profile platform, characterized by, Comprise: the buoyancy adjusting system according to any one of claims 1 to 6; a shell, the inner oil bag being arranged inside the shell; and a flow guide cover connected with the shell, the outer oil bag being arranged outside the shell and located in the flow guide cover.

8. A control method suitable for use in a buoyancy adjustment system according to any one of the preceding claims 1 to 6, characterized in that, Comprise: controlling the driving device to enter the second working mode, so that the pressure of the control end is greater than the first threshold value, the steering device is reversely conducted, the hydraulic oil in the outer oil bag flows into the inner oil bag via the second oil path, and the buoyancy adjusting system is dived; and The control driving device enters the first working mode, the pressure of the control end of the steering device is less than the first threshold value, the steering device is turned on, the hydraulic oil in the inner oil bag flows into the outer oil bag through the first oil path, and the buoyancy adjusting system floats up.

9. The control method according to claim 8, characterized by, After the control driving device enters the second working mode, before the pressure of the control end is greater than the first threshold value, the hydraulic oil in the inner oil bag flows into the driving device through the third oil path.

Images