A device for preventing adsorption and emergency escape from the bottom of a deep-sea submersible

Abstract

A device for preventing adsorption and emergency escape from the bottom of a deep-sea submersible includes a bottom-seating device body; a bottom-seating boot, which is slidably inserted in the lower end of the bottom-seating device body in the vertical direction; a seawater pump, which is located on the top wall of the cavity and is used to introduce external seawater into the cavity; a spring mounting seat, which is connected to the lower end of the seawater pump, and a mounting seat flow channel is provided in the spring mounting seat for facilitating the flow of seawater; a guide device, which is retractably connected to the lower end of the spring mounting seat through a first spring; and an annular locking hook, which is fixed to the lower end of the guide device. The present invention has a compact and reasonable structure and is easy to operate. When leaving the bottom, a high-pressure water injection mode is adopted at the bottom of the bottom-seating boot to reduce the adsorption force by offsetting the negative pore water pressure. When the adsorption force is still too large after the high-pressure water is injected at the bottom of the bottom-seating boot and the conditions for leaving the bottom are not met, the bottom-seating boot will automatically detach, which can avoid damage to the device structure to the greatest extent, and greatly ensure the safety of the submersible structure and the life safety of personnel when leaving the bottom.

Description

Technical Field

[0001] The invention relates to the technical field of bottom-sit devices for deep-sea submersibles, in particular to a bottom-sit device for deep-sea submersibles that prevents adsorption and can be used for emergency escape. Background Art

[0002] Deep-sea submersibles need to rest on the seabed. Resting on the seabed soil not only ensures that deep-sea structures will not sink and become unstable, but also ensures that the positive buoyancy can overcome the adsorption force to float up when the submersible leaves the bottom. The mass and negative buoyancy of existing deep-sea submersibles in China are relatively small, the bottom area design value of the resting device is small, and the adsorption force that needs to be overcome when leaving the bottom is also small, so it can safely rest and leave the bottom, and there is no need to take special anti-adsorption measures for the resting device.

[0003] However, for deep-sea submersibles with large mass and large negative buoyancy when sitting on the bottom, in order to avoid sinking and instability, the bottom area size of the sitting device is designed to be larger. The larger bottom area of ​​the sitting device will cause the deep-sea structure to bear a greater adsorption force when it leaves the bottom. The positive buoyancy provided by the deep-sea submersible will not be sufficient to overcome the adsorption force and complete floating, which will have a serious impact on the safety of the submersible.

[0004] Therefore, we propose a device for preventing adsorption and emergency escape from the bottom of a deep-sea submersible. Summary of the invention

[0005] In view of the shortcomings in the above-mentioned existing production technology, the applicant provides an anti-adsorption and emergency escape device for deep-sea submersibles. In order to avoid excessive adsorption force when leaving the bottom, an anti-adsorption and emergency escape device is designed. If the adsorption force is too large under extreme circumstances, the bottom of the bottom device can be detached, which greatly improves the safety of the deep-sea submersible sitting and leaving the bottom.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A device for preventing adsorption and emergency escape from the bottom of a deep-sea submersible, comprising:

[0008] A base device body, wherein the base device body is provided with a vertical cavity upwardly along the bottom wall;

[0009] The bottom-seat boot is slidably inserted into the lower end of the bottom-seat device body in the vertical direction and is used to cover the cavity, and an outlet flow channel that is connected to the cavity and can lead out seawater is opened in the bottom-seat boot;

[0010] A seawater pump, located on the top wall of the cavity, is used to introduce external seawater into the cavity;

[0011] The spring mounting seat is connected to the lower end of the seawater pump, and a mounting seat flow channel is provided in the spring mounting seat for facilitating the flow of seawater;

[0012] The guide device is retractably connected to the lower end of the spring mounting seat through the first spring, and a guide hole is provided on the seawater pump to facilitate the flow of seawater;

[0013] as well as,

[0014] The annular locking hook is fixed to the lower end of the guide device and determines whether to disengage from the seat boot according to the magnitude of the force.

[0015] The bottom of the base seat device body is provided with a plug interface with a closed end, and the plug interface is slidably plugged into the annular inner wall opened on the base seat shoe, and an O-ring is provided at the plugging point of the plug interface and the base seat shoe.

[0016] The base device body is connected with a first water inlet channel which is in communication with a seawater pump, and a second filter is arranged on the first water inlet channel.

[0017] The base device body is connected with a second water inlet channel which is in communication with the cavity. The second water inlet channel is provided with a first filter and a water inlet one-way valve which only ensures water inlet.

[0018] The annular lock hook is connected to the guide device through a connecting piece. The annular lock hook includes two rotatable annular clamps, which are tightly connected to each other through a second spring, and elastic metal cables are connected to the top of the outer walls of the two annular clamps. The elastic metal cables pass through the guide holes and are connected to the spring mounting seat.

[0019] A guide ring is arranged at the connection between the guide device and the cavity.

[0020] A connecting ring is connected to one side of the base shoe close to the annular locking hook, and the connecting ring is sleeved on two tightly embraced annular clamps, and the inner ring shape of the connecting ring corresponds to the annular clamps.

[0021] The maximum length of the elastic metal cable is greater than the vertical height of the cavity.

[0022] The base boot is provided with a plurality of inlet flow channels connecting the cavity with the outlet flow channels, and the outlet flow channels are divergently distributed and extend outside the bottom wall and side walls of the base boot, and each outlet flow channel connected to the outside is provided with a water outlet one-way valve that can only ensure water flow from the inside to the outside.

[0023] The upper end of the base shoe is provided with a notch structure, and the lower end of the side wall of the base shoe is provided with a groove structure.

[0024] The beneficial effects of the present invention are as follows:

[0025] The present invention has a compact and reasonable structure and is easy to operate. When leaving the bottom, a high-pressure water injection mode is adopted at the bottom of the seating boot to reduce the adsorption force by offsetting the negative pore water pressure. If the adsorption force is still too large after the high-pressure water is injected at the bottom of the seating boot and the conditions for leaving the bottom are not met, the seating boot will automatically detach, which can avoid damage to the device structure to the greatest extent and greatly ensure the safety of the submersible structure and the lives of personnel when sitting on and leaving the bottom.

[0026] At the same time, the present invention also has the following advantages:

[0027] (1) When the adsorption force on the bottom boot is small, when the deep-sea submersible is about to leave the bottom, the seawater pump is turned on, and the high-pressure seawater passes through the seawater pump and the bottom boot to open the water outlet check valve, so that the high-pressure seawater is poured into the bottom of the bottom boot. After offsetting the negative pore water pressure at the bottom of the bottom boot, the adsorption force can be greatly reduced.

[0028] (2) After the seawater pump is turned on for a period of time, the bottom-supporting device can float up by means of positive buoyancy. After the floatation is successful, the seawater pump is turned on again to blow away the silt remaining in the holes and gaps.

[0029] (3) When the suction force on the base shoe is relatively large, as the pulling force increases, the first spring continues to extend, and the base shoe and the base device body are separated. Since the annular locking hook is arranged in an annular shape and the connecting ring is sleeved on the annular locking hook, the base shoe shakes left and right under the action of the pulling force and the ocean undercurrent, thereby improving the effect of separating the base shoe from the bottom.

[0030] (4) When the suction force on the base shoe is extremely large, the pulling force of the elastic metal cable on the annular clamp is greater than the pulling force of the second spring on the annular clamp. At this time, the two annular clamps will be opened, so that the annular locking hook and the connecting ring will be disengaged, thereby disengaging from the base shoe and leaving the bottom, so that the base device body can float up.

[0031] (5) When the body of the seating device is ready to sit on the bottom, the seawater in the seating boot is discharged outward through the outlet flow channel (with a damping function) and the water outlet one-way valve opened at the bottom of the seating boot under the combined action of its own weight and the force of the first spring, so that the seating device has a buffering function. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the present invention.

[0033] Figure 2 It is a structural schematic diagram of the sitting boot of the present invention.

[0034] Among them: 1. Bottom-mounting device body; 2. Seawater pump; 3. Spring mounting seat; 4. Water inlet check valve; 5. First filter; 6. First spring; 7. Guide device; 8. Ring lock hook; 9. Bottom-mounting boot; 10. Connecting ring; 11. Second filter;

[0035] 101. Plug interface; 301. Mounting seat flow channel; 701. Guide hole; 702. Guide ring; 801. Connector; 802. Second spring; 803. Elastic metal cable; 901. Seat shoe frame; 902. O-ring; 903. Inlet flow channel; 904. Outlet flow channel; 905. Water outlet one-way valve; 906. Notch structure; 907. Bevel structure. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0037] The present embodiment discloses a bottom seating device for preventing adsorption and emergency escape from a deep-sea submersible, comprising: a bottom seating device body 1, a bottom seating boot 9, a seawater pump 2, a spring mounting seat 3, a guide device 7 and an annular locking hook 8; the bottom seating device body 1 is provided with a vertical cavity upwardly along the bottom wall, the seawater pump 2 is located on the top wall of the cavity and is used to introduce external seawater into the cavity, the bottom seating device body 1 is connected to a first water inlet channel which is in communication with the seawater pump 2, and a second filter 11 is provided on the first water inlet channel to improve the filtering effect.

[0038] The spring mounting seat 3 is connected to the lower end of the seawater pump 2, and a mounting seat flow channel 301 is provided in the spring mounting seat 3 for facilitating the flow of seawater;

[0039] The base device body 1 is connected to a second water inlet channel that is in communication with the cavity. The second water inlet channel is provided with a first filter 5 and a water inlet one-way valve 4 that only ensures water inlet, thereby maintaining a stable pressure in the cavity.

[0040] The bottom seat boot 9 is slidably plugged into the lower end of the bottom seat device body 1 along the vertical direction and is used to cover the cavity. The bottom of the bottom seat device body 1 is provided with a plug-in interface 101 with a closed end, and the plug-in interface 101 is slidably plugged into the annular inner wall opened on the bottom seat boot 9, and an O-ring 902 is provided at the connection between the plug-in interface 101 and the bottom seat boot 9, which is used to isolate seawater from the cavity and prevent mud and impurities from entering the cavity.

[0041] At the same time, an outlet flow channel 904 that is connected to the cavity and can lead out seawater is opened in the bottom shoe 9, and a plurality of inlet flow channels 903 that connect the cavity with the outlet flow channel 904 are opened on the bottom shoe 9, and the outlet flow channels 904 are divergently distributed and extend to the bottom wall and the side wall of the bottom shoe 9, and each outlet flow channel 904 connected to the outside is provided with a water outlet one-way valve 905 that can only ensure flow from the inside to the outside, which can reduce the bottom adsorption force by spraying water to the outside of the bottom shoe 9 to offset the negative pore water pressure when the deep-sea submersible leaves the bottom;

[0042] The guide device 7 is retractably connected to the lower end of the spring mounting seat 3 through the first spring 6. The first spring 6 is connected between the guide device 7 and the spring mounting seat 3 to provide an elastic force to drive the guide device 7 upward. A guide ring 702 is provided at the connection between the guide device 7 and the cavity. A guide hole 701 is provided on the seawater pump 2 to facilitate the flow of seawater, which can facilitate the seawater in the cavity to flow into the bottom boot 9 and facilitate the subsequent insertion of the elastic metal cable 803.

[0043] The annular locking hook 8 is fixed to the lower end of the guide device 7, and determines whether to disengage from the base shoe 9 according to the force magnitude. The annular locking hook 8 is connected to the guide device 7 through a connecting piece 801. The annular locking hook 8 includes two rotatable annular clamps, which are tightly connected to each other through a second spring 802, and elastic metal cables 803 are connected to the top of the outer walls of the two annular clamps, and the elastic metal cables 803 pass through the guide hole 701 and are connected to the spring mounting seat 3. The maximum length of the elastic metal cables 803 is greater than the vertical height of the cavity. A connecting ring 10 is connected to the side of the base shoe 9 close to the annular locking hook 8, and the connecting ring 10 is sleeved on the two tightly clamped annular clamps, and the inner ring shape of the connecting ring 10 corresponds to the annular clamp.

[0044] When leaving the bottom, the bottom seating device body 1 moves upward, and at the same time, the bottom seating boot 9 is restricted from moving upward under the action of the adsorption force, so a certain pulling force is formed between the annular locking hook 8 and the connecting ring 10, driving the bottom seating boot 9 to leave the bottom. As the pulling force increases, the first spring 6 continues to extend. When the bottom seating boot 9 and the bottom seating device body 1 are separated, since the annular locking hook 8 is arranged in an annular shape and the connecting ring 10 is sleeved on the annular locking hook 8, it shakes left and right under the action of the pulling force and the ocean undercurrent, thereby improving the bottom separation effect of the bottom seating boot 9. At the same time, when the elastic metal cable 803 reaches the limit position, when the pulling force of the elastic metal cable 803 on the annular clamp is greater than the pulling force of the second spring 802 on the annular clamp, the two annular clamps will be opened at this time, so that the annular locking hook 8 and the connecting ring 10 are separated, thereby separating from the bottom seating boot 9 and achieving bottom separation.

[0045] A cutout structure 906 is provided at the upper end of the seating shoe 9 for scraping off mud and marine organisms attached to the seating device body 1 and allowing them to slide down the slope. A groove structure 907 is provided at the lower end of the side wall of the seating shoe 9. The slope is provided to avoid mud and sand accumulation, increase the seating area, and prevent sinking.

[0046] In this embodiment, there are three off-bottom modes:

[0047] When the adsorption force on the seating shoe 9 is relatively small, when the deep-sea submersible is about to leave the bottom, the seawater pump 2 is turned on, and the high-pressure seawater passes through the seawater pump 2 and the seating shoe 9 to open the water outlet check valve 905, so that the high-pressure seawater is poured into the bottom of the seating shoe 9. After offsetting the negative pore water pressure at the bottom of the seating shoe 9, the adsorption force can be greatly reduced.

[0048] After the seawater pump 2 is turned on for a period of time, the bottom support device body 1 can float up by means of positive buoyancy. After the floatation is successful, the seawater pump 2 is turned on again to blow away the silt remaining in the ducts and gaps.

[0049] When the adsorption force on the seating boot 9 is relatively large, as the pulling force increases, the first spring 6 continues to extend, and the seating boot 9 and the seating device body 1 are separated. Since the annular locking hook 8 is arranged in an annular shape and the connecting ring 10 is sleeved on the annular locking hook 8, it shakes left and right under the action of the pulling force and the ocean undercurrent, thereby improving the effect of separating the seating boot 9 from the bottom.

[0050] When the adsorption force on the seating shoe 9 is extremely large, and the pulling force of the elastic metal cable 803 on the annular clamp is greater than the pulling force of the second spring 802 on the annular clamp, the two annular clamps will be opened, causing the annular locking hook 8 and the connecting ring 10 to disengage, thereby disengaging from the seating shoe 9 and leaving the bottom, thereby allowing the seating device body 1 to float up.

[0051] Moreover, when the seating device body 1 is ready to sit on the bottom, the seawater in the seating shoe 9 is discharged outward through the outlet flow channel 904 (with damping function) and the water outlet one-way valve 905 opened at the bottom of the seating shoe 9 under the combined action of its own weight and the force of the first spring 6, so that the seating has a buffering function.

[0052] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A device for preventing adsorption and emergency escape from the bottom of a deep-sea submersible, characterized in that: include: A base seating device body (1), wherein the base seating device body (1) is provided with a vertical cavity extending upward along the bottom wall; A bottom seat boot (9) is slidably inserted into the lower end of the bottom seat device body (1) in a vertical direction and is used to cover the cavity, and an outlet flow channel (904) is provided in the bottom seat boot (9) and is connected to the cavity and can lead out seawater; A seawater pump (2), located on the top wall of the cavity and used for introducing external seawater into the cavity; A spring mounting seat (3) is connected to the lower end of the seawater pump (2), and a mounting seat flow channel (301) is provided in the spring mounting seat (3) to facilitate the flow of seawater; The guide device (7) is retractably connected to the lower end of the spring mounting seat (3) via the first spring (6); a guide hole (701) is provided on the seawater pump (2) to facilitate the flow of seawater; as well as, An annular locking hook (8) is fixed to the lower end of the guide device (7) and determines whether to disengage from the base shoe (9) according to the magnitude of the force applied; The annular locking hook (8) is connected to the guide device (7) via a connecting piece (801), and the annular locking hook (8) comprises two rotatable annular clamping pieces, the two annular clamping pieces are tightly connected to each other via a second spring (802), and elastic metal cables (803) are connected to the tops of the outer walls of the two annular clamping pieces, and the elastic metal cables (803) pass through the guide hole (701) and are connected to the spring mounting seat (3).

2. The anti-adsorption and emergency escape device for deep-sea submersibles as claimed in claim 1, characterized in that: The bottom of the base seating device body (1) is provided with a plug interface (101) with a closed end, and the plug interface (101) is slidably plugged into an annular inner wall provided on the base seating boot (9), and an O-ring (902) is provided at the plugging point between the plug interface (101) and the base seating boot (9).

3. The anti-adsorption and emergency escape from the bottom device of a deep-sea submersible as claimed in claim 1, characterized in that: The base device body (1) is connected to a first water inlet flow channel which is in communication with a seawater pump (2), and a second filter (11) is provided on the first water inlet flow channel.

4. The anti-adsorption and emergency escape device for deep-sea submersibles as claimed in claim 1, characterized in that: The base device body (1) is connected to a second water inlet channel that is in communication with the cavity, and a first filter (5) and a water inlet check valve (4) that only ensures water inlet are arranged on the second water inlet channel.

5. The anti-adsorption and emergency escape device for deep-sea submersibles as claimed in claim 1, characterized in that: A guide ring (702) is provided at the connection between the guide device (7) and the cavity.

6. The anti-adsorption and emergency escape device for deep-sea submersibles as claimed in claim 5, characterized in that: A connecting ring (10) is connected to one side of the base shoe (9) close to the annular locking hook (8), and the connecting ring (10) is sleeved on two tightly held annular clamps, and the inner ring shape of the connecting ring (10) corresponds to the annular clamp.

7. The anti-adsorption and emergency escape device for deep-sea submersibles as claimed in claim 5, characterized in that: The maximum length of the elastic metal cable (803) is greater than the vertical height of the cavity.

8. The anti-adsorption and emergency escape device for deep-sea submersibles as claimed in claim 1, characterized in that: The base shoe (9) is provided with a plurality of inlet flow channels (903) connecting the cavity with the outlet flow channels (904), and the outlet flow channels (904) are distributed in a divergent manner and extend outside the bottom wall and the side wall of the base shoe (9), and each outlet flow channel (904) connected to the outside is provided with a water outlet one-way valve (905) that can only ensure water flows from the inside to the outside.

9. The anti-adsorption and emergency escape device for deep-sea submersibles as claimed in claim 1, characterized in that: The upper end of the seating shoe (9) is provided with a notch structure (906), and the lower end of the side wall of the seating shoe (9) is provided with a groove structure (907).

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