A deep sea pressure-maintaining sampling barrel, sampler and method

Abstract

The present invention proposes a deep-sea pressure-maintaining sampling barrel, a sampler and a method, which belong to the field of deep-sea biological pressure-maintaining sampling. The problem of high cost, multiple power sources and complex structure of the existing sampling system is solved. A deep-sea pressure-maintaining sampling barrel comprises: a sampling barrel body, an opening is arranged at one end, and the opening is blocked by a deep-sea shattering plate; a guide light rod, which is coaxially arranged in the sampling barrel body, and a sealing cover is slidably arranged on it; a water-soluble part, which is used to fix the sealing cover relative to the inner wall of the sampling barrel body, and is used to melt after the deep-sea shattering plate breaks and seawater enters the sampling barrel body; an elastic part, one end of which is connected to the side of the sealing cover away from the opening, and the other end is relatively fixed to the inner wall of the sampling barrel body, and is used to push the sealing cover against the opening and close the opening after the water-soluble part melts. It is mainly used for deep-sea biological sampling.

Description

Technical Field

[0001] The invention belongs to the field of deep-sea biological pressure-maintaining sampling, and in particular relates to a deep-sea pressure-maintaining sampling barrel, a sampler and a method. Background Art

[0002] The deep sea is rich in biological resources. At present, human beings have very limited knowledge of life phenomena and life processes in the deep sea, and the exploration and understanding of deep-sea organisms and genetic resources are very insufficient. It is difficult to obtain deep-sea biological samples, and they will be seriously damaged during the recovery process due to changes in external environmental pressure. Pressure-maintained sampling of deep-sea organisms to maintain their in-situ physiological state is a prerequisite for conducting deep-sea biological research. It can be said that pressure-maintained sampling is one of the important means for humans to conduct in-depth research on deep-sea organisms and develop deep-sea biological resources.

[0003] Existing deep-sea pressure samplers usually need to be carried by a submersible or lander to reach the seabed and trigger the sampling action through a hydraulic system or motor. Not only is the sampling system equipment costly and complex, but the cost of a single sampling operation is also high and time-consuming during ocean scientific research.

[0004] PVA polyvinyl alcohol material is a water-soluble polymer with good tensile strength and high toughness, and is soluble in water and seawater. Therefore, using PVA material to manufacture the trigger mechanism of the deep-sea pressure-maintaining sampler, or combining it with energy storage components such as springs to manufacture the action actuator of the deep-sea pressure-maintaining sampler, is expected to replace the hydraulic system or motor system and realize passive sampling.

[0005] Therefore, the present invention proposes a passive deep-sea biological pressure-maintaining sampler, which utilizes the property of PVA material dissolving in water to establish a passive deep-sea pressure-maintaining sampler. Without any hydraulic or electrical equipment, using PVA materials of different diameters or shapes, a series of time-series events including deployment, release configuration, sampling action triggering, buoyancy adjustment, etc. are realized to complete the whole process of deep-sea biological pressure-maintaining sampling. Summary of the invention

[0006] In view of this, the present invention aims to propose a deep-sea pressure-maintaining sampling barrel, a sampler and a method to solve the problems of the existing sampling system having high cost, multiple power sources and complex structure.

[0007] To achieve the above object, the present invention adopts the following technical solution. According to one aspect of the present invention, a deep-sea pressure-maintaining sampling barrel is provided, comprising:

[0008] The sampling barrel body has an opening at one end, and the opening is blocked by a deep-sea fragmentation plate;

[0009] A guide light rod is coaxially arranged in the sampling barrel, and a sealing cover is slidably arranged on the guide light rod;

[0010] A water-soluble part is used to fix the sealing cover relative to the inner wall of the sampling barrel and is used to melt after the deep-sea shattering plate breaks and seawater enters the sampling barrel;

[0011] The elastic member has one end connected to the side of the sealing cover away from the opening and the other end fixed relatively to the inner wall of the sampling barrel body, and is used to push the sealing cover against the opening and close the opening after the water-soluble member melts.

[0012] Furthermore, the deep-sea shattering plate is a glass sheet.

[0013] Furthermore, the elastic member is a spring.

[0014] Furthermore, a combined sealing gasket is provided at the opening, and a side of the sealing cover close to the opening is adapted to the cross-sectional shape of the combined sealing gasket.

[0015] Furthermore, a deep-sea observation glass sheet is provided on the side of the sampling barrel away from the opening.

[0016] According to another aspect of the present invention, there is provided a passive deep-sea biological pressure-maintaining sampler, comprising the above-mentioned deep-sea pressure-maintaining sampling barrel, the sampler also comprising: a deep-sea sampling barrel mounting frame, in which the deep-sea pressure-maintaining sampling barrel is fixedly arranged, and a resistance plate is arranged on the side wall, one end of the resistance plate is connected to the side wall of the deep-sea sampling barrel mounting frame by an elastic hinge, and the other end is connected to the side wall of the deep-sea sampling barrel mounting frame by a water-soluble part.

[0017] Furthermore, the sampler also includes: at least one counterweight block, which is connected to the deep-sea sampling barrel mounting frame through a water-soluble component.

[0018] Furthermore, the sampler also includes: a plurality of legs, and each leg is connected to a counterweight leg through a water-soluble component on one side close to the ground.

[0019] Furthermore, the sampler also includes: a plurality of deep-sea buoys, some of which are connected to the deep-sea sampling barrel mounting frame through water-soluble parts, and some of which are connected to the deep-sea sampling barrel mounting frame.

[0020] According to another aspect of the present invention, there is provided a method for using the passive deep-sea biological pressure-maintaining sampler as described above, comprising the following steps:

[0021] S1, preparation phase: before lowering the sampler, ensure the integrity of the deep-sea fracturing plates and water-soluble parts.

[0022] S2, sinking process: First, after the sampler enters the water, it begins to sink faster under the action of gravity. When the sampler sinks to the predetermined depth, the water-soluble parts corresponding to the counterweight block dissolve first, causing the counterweight block to fall off. Then, the water-soluble parts corresponding to the resistance plate dissolve. The resistance plate gradually rotates until it is horizontal under the action of the upward seawater. After a certain period of time, the sampler will reach a steady-state speed and land smoothly at a uniform speed.

[0023] S3, sampling process: the deep-sea shattering plate begins to break when it is about to reach the seabed, the opening is opened, and seawater flows into the deep-sea pressure-maintaining sampling barrel and begins to dissolve the water-soluble parts used to connect the sealing cover and the inner wall of the sampling barrel. At the same time, the bait placed in the deep-sea pressure-maintaining sampling barrel will attract seabed organisms to approach and enter the deep-sea pressure-maintaining sampling barrel;

[0024] S4, pressure-maintaining process: after the water-soluble component used to connect the sealing cover and the inner wall of the sampling barrel is dissolved, the elastic component gradually recovers its deformation from the compressed state, driving the sealing cover to move along the guide light rod and discharge the excess material inside the deep-sea pressure-maintaining sampling barrel until it fits with the combined sealing gasket;

[0025] S5, recovery process: After sampling, the sampler remains on the seabed for a period of time until the water-soluble parts at the counterweight support feet are completely dissolved in water, and the support feet are separated from the counterweight support feet. After the weight of the sampler is reduced, the buoyancy begins to be greater than the gravity and begins to float. Before the sampling device floats out of the water, the water-soluble parts connected to the deep-sea buoy dissolve in water, causing the deep-sea buoy to detach and reduce buoyancy, slowing down the acceleration of floating, and finally the sampler floats to the surface.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. This sampler does not require power drive and adopts a passive design as a whole. It does not need to provide a power source during the sampling process, which reduces the complexity and cost of the sampler and avoids the potential impact of power drive on the deep-sea environment;

[0028] 2. The sampler seals the opening through the deep-sea fragmentation plate and then fragments it in the deep sea, so that the opening can be opened at a low cost. After the opening is opened, the sealing cover is driven by the cooperation of the water-soluble part and the elastic part to seal the opening, and the combined sealing gasket is used to seal the opening and maintain the pressure. The pressure can be maintained without any driving parts in the middle, and the cost is low.

[0029] 3. The sampler uses water-soluble parts to open the resistance plate and drop the counterweight during the dive, thereby completing the dive deceleration and preventing the impact of landing on the sampler, with a high safety factor;

[0030] 4. Through the use of water-soluble parts, this sampler can disconnect from the deep-sea buoy during the buoyancy of the sampler, so that the sampler can reduce the acceleration of buoyancy. By maintaining the pressure, it will not cause pressure effects on organisms, and the safety factor is higher for sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of the structure of a passive deep-sea biological pressure-maintaining sampler from a first perspective;

[0033] Figure 2 A schematic diagram of the structure of a passive deep-sea biological pressure-maintaining sampler from a second viewing angle;

[0034] Figure 3 This is an appearance diagram of the deep-sea pressure-maintaining sampling barrel of the present invention;

[0035] Figure 4 It is a side view of the deep-sea pressure-maintaining sampling barrel of the present invention;

[0036] Figure 5 The present invention Figure 3 HH sectional view;

[0037] Figure 6 The present invention Figure 3 AA section view;

[0038] Figure 7 The present invention Figure 6 A partial enlarged view of part C;

[0039] Figure 8 A top view of the deep-sea sampling barrel mounting frame of the present invention;

[0040] Fig. 9 The present invention Figure 8 BB section view;

[0041] Fig.10 It is a schematic diagram of the three-dimensional structure of the deep-sea sampling barrel mounting frame of the present invention;

[0042] Fig.11 This is a diagram showing the initial state of the sealing cover of the present invention when the PVA plastic rod is not water-soluble;

[0043] Fig.12 This is a motion state diagram of the sealing cover of the present invention after the PVA plastic rod is dissolved in water;

[0044] Fig.13 A diagram showing the state of the sealing cover and the combined sealing gasket of the present invention in cooperation with each other;

[0045] Fig.14 It is a three-dimensional structural diagram of the sealing cover and the combined sealing gasket of the present invention;

[0046] Fig.15 It is a schematic diagram of the three-dimensional structure of the combined sealing gasket of the present invention;

[0047] Fig.16 It is a side view of the combined sealing gasket of the present invention;

[0048] Fig.17 This is a state diagram of the resistance plate of the present invention when the PVA fixing rod is not water-soluble;

[0049] Fig.18 This is a motion state diagram of the resistance plate of the present invention when the PVA fixing rod is dissolved in water;

[0050] Fig.19 This is a diagram showing a state in which the resistance plate of the present invention is fully opened;

[0051] Fig. 20 This is a state diagram when the support foot and the counterweight support foot of the present invention are not separated;

[0052] Fig.21 This is a state diagram of the initial separation of the support leg and the counterweight support leg after the PVA plastic pin of the present invention is dissolved in water;

[0053] Fig. 22 This is a diagram showing the initial state of the deep-sea floating ball device of the present invention;

[0054] Fig.23 This is a motion diagram of the deep-sea buoy detaching after the PVA plastic ring of the present invention is dissolved.

[0055] Deep-sea pressure-maintaining sampling barrel 1; fixing rod 1-1; fixing plate 1-2; sample chamber end cover 1-3; glass sheet 1-4; combined sealing gasket 1-5; guide light rod 1-6; sealing cover 1-7; PVA plastic rod 1-8; spring 1-9; sampling barrel body 1-10; deep-sea observation glass sheet 1-11; deep-sea sampling barrel mounting frame 2; protective glass 2-1; eye bolt 2-2; floating protection plate 2-3; PVA plastic pin 2-4; support foot 2-5; counterweight support foot 2-6; rubber pad 2-7; load-bearing protection plate 2-8; fixing fork 2-9; protection fixing fork plate 2-10; protection fixing plate 2-11; counterweight block 2-12; PVA plastic counterweight rod 2-13; elastic hinge 2-14; resistance plate 2-15; PVA fixing rod 2-16; deep-sea buoy device 3; deep-sea buoy 3-1; PVA plastic ring 3-2; cable 3-3. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0057] It should be noted that the descriptions of the present invention regarding directions such as "left", "right", "left side", "right side", "upper", "lower", "top", "bottom", etc. are all defined based on the relationship between the orientations or positions shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure described must be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. In the description of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0058] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] Referring to the accompanying drawings, this embodiment is described. According to one aspect of the present invention, a deep-sea pressure-maintaining sampling barrel is provided, comprising:

[0060] The sampling barrel body 1-10 has an opening at one end, and the opening is blocked by a deep-sea shattering plate; the purpose of the deep-sea shattering plate is to block the opening under normal conditions, and to break under water pressure after reaching the preset biological collection depth so that the opening can be smoothly opened, so that the organisms can enter smoothly. The specific sampling barrel body 1-10 can be provided with a detachable sample chamber end cover 1-3 on the side where the opening is located. By connecting in this way, the bait for trapping organisms can be placed in the sampling barrel body 1-10. When the sampling barrel body 1-10 and the sample chamber end cover 1-3 are connected, a sealing ring needs to be provided to ensure the sealing performance, and they are connected by bolts, etc. A deep-sea observation glass piece 1-11 is provided on the side of the sampling barrel body 1-10 away from the opening or at a position convenient for observation, so as to facilitate the observation of the state of the organisms. It should be noted that the strength of the deep-sea observation glass piece 1-11 needs to meet the requirements of deep-sea use without breaking. A marine life capture trap can be added to the inner wall of the sampling barrel body 1-10, that is, a funnel-shaped fishing device made of PVA water-soluble plastic is glued with special glue, and bait is placed in the fishing device. These baits can attract fish to approach and enter the sampling barrel, and when the fish tries to find an exit in the bottle, it is difficult for the fish to escape due to the shape and size restrictions. And this device will completely dissolve when the sealing cover 1-7 starts to move linearly along the guide light rod 1-6, and will not hinder the sealing of the sealing cover 1-7 and the combined sealing gasket 1-5.

[0061] The guide light rod 1-6 is coaxially arranged in the sampling barrel body 1-10, and a sealing cover 1-7 is slidably arranged thereon; the guide light rod 1-6 is arranged to provide a sliding guide function for the sealing cover 1-7. Specifically, when fixing the guide light rod 1-6, a fixing rod 1-1 can be arranged in the sampling barrel body 1-10, one end of the fixing rod 1-1 is connected to the inner wall of the sampling barrel body 1-10, and the other end is fixedly arranged with a fixing plate 1-2, one end of the guide light rod 1-6 is fixedly connected to the fixing plate 1-2, and the other end is connected to the inner wall of the sampling barrel body 1-10, and can form a connection relationship with the sample chamber end cover 1-3 when a sample chamber end cover 1-3 is arranged. The guide light rod 1-6 is coaxially arranged in the sampling barrel body 1-10, and the travel of the sealing cover 1-7 can be limited, so that after the sealing cover 1-7 loses its limiting function, it can smoothly move to the opening to seal it.

[0062] The water-soluble component is used to fix the sealing cover 1-7 relative to the inner wall of the sampling barrel body 1-10, and is used to melt after the deep-sea fragmentation plate breaks and seawater enters the sampling barrel body 1-10; the water-soluble component adopts a PVA plastic rod 1-8 and in this case one end is fixed on the fixing plate 1-2, and the other end is fixed on the sealing cover 1-7. The elastic component is in a compressed state in this case to maintain a certain pre-tightening force. When the PVA plastic rod 1-8 comes into contact with water and melts, the elastic component will stretch to drive the sealing cover 1-7 to seal the opening. The pre-tightening force of the elastic component should be able to ensure that it can overcome the predetermined seawater pressure. For this application, a PVA plastic rod 1-8 is set to fix the sealing cover 1-7. The PVA plastic rod 1-8 can be connected to the corresponding part in the form of bonding. As for the diameter of the PVA plastic rod 1-8, it can be set accordingly according to the actual situation and hunting time.

[0063] The elastic member has one end connected to the side of the sealing cover 1-7 away from the opening and the other end fixed relatively to the inner wall of the sampling barrel body 1-10, and is used to push the sealing cover 1-7 against the opening and close the opening after the water-soluble member melts.

[0064] In this embodiment, the deep-sea shattering plates are glass sheets 1-4. The glass sheets 1-4 are easy to obtain and inexpensive, thus reducing the test cost.

[0065] In this embodiment, the elastic member is a spring 1-9. The spring 1-9 has a low cost, is easy to obtain, and is a common component, which can reduce the test cost.

[0066] In this embodiment, a combined sealing gasket 1-5 is provided at the opening, and the sealing cover 1-7 is adapted to the cross-sectional shape of the combined sealing gasket 1-5 on the side close to the opening. The combined sealing gasket 1-5 is specifically in a stepped shape with one front and one rear, and by forming multiple bonding surfaces with the sealing cover 1-7, the sealing performance can be improved, and the pressure inside the deep-sea pressure-maintaining sampling barrel 1 is kept stable, thereby ensuring the integrity of the biological sampling and preventing it from being damaged.

[0067] According to another aspect of the present invention, there is provided a passive deep-sea biological pressure-maintaining sampler, including the above-mentioned deep-sea pressure-maintaining sampling barrel, the sampler also includes: a deep-sea sampling barrel mounting frame 2, in which a deep-sea pressure-maintaining sampling barrel 1 is fixedly arranged, and a resistance plate 2-15 is arranged on the side wall, one end of the resistance plate 2-15 is connected to the side wall of the deep-sea sampling barrel mounting frame 2 through an elastic hinge 2-14, and the other end is connected to the side wall of the deep-sea sampling barrel mounting frame 2 through a water-soluble component. Specifically, the sampling barrel body 1-10 of the deep-sea pressure-maintaining sampling barrel 1 is fixed in the deep-sea sampling barrel mounting frame 2 through the cooperation of a fixing fork 2-9 and a protective fixing fork plate 2-10, the deep-sea sampling barrel mounting frame 2 is an overall frame structure, and the protective fixing fork plate 2-10 is arranged on the frame structure, which does not hinder the contact between water and the deep-sea pressure-maintaining sampling barrel 1 as a whole, and the deep-sea sampling barrel mounting frame 2 is used to fix the two sides of the deep-sea pressure-maintaining sampling barrel 1, and can be fixed specifically by bolts. The protective fixing fork plate 2-10 is specifically used to fix the middle part of the deep-sea pressure-maintaining sampling barrel 1. Protective fixing plates 2-11 are arranged on both sides of the deep-sea sampling barrel mounting frame 2 to prevent external objects from causing impact damage to the deep-sea pressure-maintaining sampling barrel 1 after the resistance plate 2-15 is opened. The protective glass 2-1 is arranged on the outside of the deep-sea sampling barrel mounting frame 2 according to actual needs, and plays a role in protecting and observing the internal situation. A reasonable fixing method can be selected according to actual needs. A floating protection plate 2-3 can be arranged on the top of the deep-sea sampling barrel mounting frame 2, and a certain number of eye bolts 2-2 are arranged on the floating protection plate 2-3. A cable 3-3 can be tied to the eye bolt 2-2. The free end of the cable 3-3 is connected to the deep-sea buoy 3-1 through a PVA plastic ring 3-2. The specifications of the PVA plastic ring 3-2 can be set according to the actual required dissolution speed. The water-soluble part corresponding to the resistance plate 2-15 is a PVA fixing rod 2-16. After dissolving, the resistance plate 2-15 can cooperate with water to open, which can also reduce the descending speed of the sampler and prevent the sampler from colliding due to excessive descending speed and causing damage to the sampler.

[0068] In this embodiment, the sampler also includes: at least one counterweight 2-12, which is connected to the deep-sea sampling barrel mounting frame 2 through a water-soluble component. The water-soluble component in this case is a PVA plastic counterweight rod 2-13, and the counterweight 2-12 can be completely removed by dissolving the PVA plastic counterweight rod 2-13, thereby reducing the speed of entering the water and preventing the sampler from falling too fast and causing impact damage. Specifically, a load-bearing protection plate 2-8 is provided at the bottom of the deep-sea sampling barrel mounting frame 2, and the counterweight 2-12 is connected to the load-bearing protection plate 2-8 through the PVA plastic counterweight rod 2-13.

[0069] In this embodiment, the sampler also includes: a plurality of legs 2-5, each of which is connected to a counterweight leg 2-6 by a water-soluble component on the side close to the ground. The counterweight leg 2-6 plays a role of landing during the descent process, and the specific arrangement can be arranged at the four corners of the deep-sea sampling barrel mounting frame 2. A rubber pad 2-7 can be arranged under each counterweight leg 2-6 to play a buffering role and reduce the impact during the landing process. The legs 2-5 and the counterweight leg 2-6 can be connected in a plug-in manner, and then a through hole running through the two is arranged, and a water-soluble component is arranged in the through hole. At this time, the water-soluble component is a PVA plastic pin 2-4, which can ensure the separation between the legs 2-5 and the counterweight leg 2-6 after water dissolution.

[0070] In this embodiment, the sampler also includes: a plurality of deep-sea buoys 3-1, some of which are connected to the deep-sea sampling bucket mounting frame 2 through water-soluble parts, and some of which are connected through water-soluble parts so that they can be dissolved and separated during the floating process to reduce the floating acceleration, and some of which are connected to the deep-sea sampling bucket mounting frame 2, where ropes can be used to prevent the deep-sea sampling bucket mounting frame 2 from losing the buoyancy of floating. After the support legs 2-5 and the counterweight support legs 2-6 are separated, the deep-sea buoy 3-1 can form a floating effect to help the sampler return to the shore. During the return process, the water-soluble part used to connect the deep-sea buoy 3-1 to the deep-sea sampling bucket mounting frame 2 is a PVA plastic ring 3-2, which is finally dissolved to prevent the device from floating too fast and reducing the pressure to affect the organisms. The deep-sea buoy device 3 composed of the deep-sea buoy 3-1, the PVA plastic ring 3-2 and the cable 3-3 is provided with a plurality of devices according to actual needs, and is separated from the sampler in a certain order, which can ensure the buoyancy and speed reduction of the sampler, and the means of sequential separation is to use PVA plastic rings 3-2 of different specifications and sizes. In the buoyancy process, the resistance plate 2-15 can also play a role in reducing the speed, further preventing the sampler from floating too fast, thereby preventing the buoyancy too fast from causing the external pressure of the sampler to decrease rapidly and affecting the organisms inside the sampler.

[0071] According to another aspect of the present invention, there is provided a method for using the above-mentioned passive deep-sea biological pressure-maintaining sampler, comprising the following steps:

[0072] S1, preparation phase: before lowering the sampler, ensure the integrity of the deep-sea fracturing plates and water-soluble parts.

[0073] S2, sinking process: First, after the sampler enters the water, it begins to sink faster under the action of gravity. When the sampler sinks to the predetermined depth, the water-soluble parts corresponding to the counterweight 2-12 dissolve first, causing the counterweight 2-12 to fall off. Then, the water-soluble parts corresponding to the resistance plate 2-15 dissolve. The resistance plate 2-15 gradually rotates until it is horizontal under the action of the upward seawater. At the same time, the wave resistance and viscous resistance gradually increase with the resistance area. The increased resistance will offset part of the gravity acceleration, which will cause the descent acceleration to further decrease. When the resistance is equal to the gravity, the sampler will reach its terminal velocity, that is, it will descend at a steady speed and land smoothly;

[0074] S3, sampling process: the deep-sea shattering plate begins to break when it is about to reach the seabed, the opening is opened, and seawater flows into the deep-sea pressure-maintaining sampling barrel 1 and begins to dissolve the water-soluble parts used to connect the sealing cover 1-7 and the inner wall of the sampling barrel body 1-10. At the same time, the bait placed in the deep-sea pressure-maintaining sampling barrel 1 will attract seabed organisms to approach and enter the deep-sea pressure-maintaining sampling barrel 1;

[0075] S4, pressure-maintaining process: After the water-soluble component used to connect the sealing cover 1-7 and the inner wall of the sampling barrel 1-10 dissolves, the elastic component gradually recovers its deformation from the compressed state, driving the sealing cover 1-7 to move along the guide light rod 1-6 and discharge the excess material inside the deep-sea pressure-maintaining sampling barrel 1 until it fits with the combined sealing gasket 1-5; the combined sealing gasket 1-5 ensures complete sealing between objects; it can also enhance the stability of the connection and reduce the risk of leakage caused by factors such as vibration or impact. Based on its excellent sealing effect, it can ensure that deep-sea biological samples are completely sealed in the sampling barrel and brought back to the surface under pressure.

[0076] S5, recovery process: After sampling, the sampler is left at rest on the seabed for a period of time until the water-soluble parts at the weighted support leg 2-6 are completely dissolved, and the support leg 2-5 is separated from the weighted support leg 2-6. After the weight of the sampler is reduced, the buoyancy begins to be greater than the gravity and begins to float up. Before the sampling device floats out of the water, the water-soluble parts connected to the deep-sea buoy 3-1 are dissolved, so that the deep-sea buoy 3-1 is separated to reduce the buoyancy, slow down the acceleration of floating, and finally the sampler floats to the surface. Avoid damage to deep-sea biological samples due to abnormal movement due to excessive speed.

[0077] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. A method for using a passive deep-sea biological pressure-maintaining sampler, characterized in that: The passive deep-sea biological pressure-maintaining sampler comprises a deep-sea pressure-maintaining sampling barrel, and the deep-sea pressure-maintaining sampling barrel comprises: The sampling barrel (1-10) has an opening at one end thereof, and the opening is blocked by a deep-sea fragmentation plate; A guide light rod (1-6) is coaxially arranged in the sampling barrel body (1-10), and a sealing cover (1-7) is slidably arranged on the guide light rod; A water-soluble component, used to fix the sealing cover (1-7) and the inner wall of the sampling barrel (1-10) relative to each other, and used to melt after the deep-sea shattering plate breaks and seawater enters the sampling barrel (1-10); An elastic member, one end of which is connected to the side of the sealing cover (1-7) away from the opening and the other end of which is fixed relatively to the inner wall of the sampling barrel body (1-10), and is used to push the sealing cover (1-7) against the opening and close the opening after the water-soluble member melts; The sampler further comprises: a deep-sea sampling barrel mounting frame (2), in which a deep-sea pressure-maintaining sampling barrel (1) is fixedly arranged, and a resistance plate (2-15) is arranged on the side wall, one end of the resistance plate (2-15) is connected to the side wall of the deep-sea sampling barrel mounting frame (2) through an elastic hinge (2-14), and the other end is connected to the side wall of the deep-sea sampling barrel mounting frame (2) through a water-soluble component; The sampler further comprises: at least one counterweight block (2-12), wherein the counterweight block (2-12) is connected to the deep-sea sampling barrel mounting frame (2) via a water-soluble component; The sampler further comprises: a plurality of legs (2-5), wherein the side of each leg (2-5) close to the ground is connected to a weighted leg (2-6) through a water-soluble component; The sampler further comprises: a plurality of deep-sea buoys (3-1), some of the deep-sea buoys (3-1) being connected to a deep-sea sampling barrel mounting frame (2) via water-soluble components, and some of the deep-sea buoys (3-1) being connected to a deep-sea sampling barrel mounting frame (2); The method of use includes the following steps: S1, preparation stage: before lowering the sampler, ensure the integrity of the deep-sea fragmentation plate and water-soluble parts; S2, sinking process: first, after the sampler enters the water, it begins to sink at an accelerated speed under the action of gravity. When the sampler sinks to a predetermined depth, the water-soluble parts corresponding to the counterweight block (2-12) are first dissolved in water, causing the counterweight block (2-12) to fall off. Then, the water-soluble parts corresponding to the resistance plate (2-15) are dissolved in water. The resistance plate (2-15) is gradually rotated until it is horizontal under the action of the upward seawater. After a certain period of time, the sampler will reach a steady-state speed and land smoothly at a uniform speed. S3, sampling process: the deep-sea shattering plate begins to break when it is about to reach the seabed, the opening is opened, and seawater flows into the deep-sea pressure-maintaining sampling barrel (1) and begins to dissolve the water-soluble parts used to connect the sealing cover (1-7) and the inner wall of the sampling barrel body (1-10). At the same time, the bait placed in the deep-sea pressure-maintaining sampling barrel (1) will attract seabed organisms to approach and enter the deep-sea pressure-maintaining sampling barrel (1); S4, pressure-maintaining process: after the water-soluble member connecting the sealing cover (1-7) and the inner wall of the sampling barrel body (1-10) dissolves, the elastic member gradually recovers its deformation from the compressed state, driving the sealing cover (1-7) to move along the guide light rod (1-6) and discharge the excess material inside the deep-sea pressure-maintaining sampling barrel (1) until it fits with the combined sealing gasket (1-5); S5, recovery process: After sampling, the sampler is left to stand still on the seabed for a period of time until the water-soluble parts at the weighted support foot (2-6) are completely dissolved in water, and the support foot (2-5) is separated from the weighted support foot (2-6). After the weight of the sampler is reduced, the buoyancy begins to be greater than the gravity and begins to float up. Before the sampling device floats out of the water, the water-soluble parts connected to the deep-sea buoy (3-1) are dissolved in water, causing the deep-sea buoy (3-1) to detach and reduce the buoyancy, slowing down the acceleration of floating, and finally the sampler floats to the surface.

2. A deep-sea pressure-maintaining sampling barrel according to claim 1, characterized in that: The deep-sea shattering plates are glass sheets (1-4).

3. A deep-sea pressure-maintaining sampling barrel according to claim 1, characterized in that: The elastic member is a spring (1-9).

4. A deep-sea pressure-maintaining sampling barrel according to claim 1, characterized in that: A combined sealing gasket (1-5) is provided at the opening, and the sealing cover (1-7) is adapted to the cross-sectional shape of the combined sealing gasket (1-5) on one side close to the opening.

5. A deep-sea pressure-maintaining sampling barrel according to claim 1, characterized in that: A deep-sea observation glass sheet (1-11) is arranged on the side of the sampling barrel (1-10) away from the opening.

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