Compact deep-sea macro-organism pressure-maintaining sampling device suitable for pressure-maintaining transfer and pressure-maintaining sampling transfer system

Abstract

The invention provides a compact deep-sea macro organism pressure-maintaining sampling device suitable for pressure-maintaining transfer and a pressure-maintaining sampling transfer system. The invention discloses a compact deep-sea macro organism pressure-maintaining sampling device suitable for pressure-maintaining transfer. The compact deep-sea macro organism pressure-maintaining sampling device comprises an oil pressure balance motor, the pressure-maintaining sampling cabin comprises a sampling cabin outer cylinder which is provided with a first accommodating cavity; the hollow driving lead screw is provided with a second containing cavity, and the hollow driving lead screw is arranged in the first containing cavity and connected with an output shaft of the oil pressure balance motor; the lead screw nut sliding sleeve is arranged outside the hollow driving lead screw in a sleeving manner and can do reciprocating rectilinear motion in the length direction of the lead screw nut sliding sleeve; the sampling cabin inner cylinder is provided with a sampling opening and a third containing cavity, and the sampling cabin inner cylinder is arranged outside the hollow driving lead screw in a sleeving mode and fixedly connected with the lead screw nut sliding sleeve; in a sampling state, the sampling opening of the sampling cabin inner cylinder is positioned outside the sampling cabin outer cylinder, and the sampling opening, the third accommodating cavity and the second accommodating cavity are communicated; and in a pressure maintaining state, the sampling cabin inner cylinder is accommodated in the first accommodating cavity in a sealing manner.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of deep-sea macrobiota resource sampling, and particularly to a compact deep-sea macrobiota pressure-maintaining sampling device and a pressure-maintaining sampling transfer system suitable for pressure-maintaining transfer. BACKGROUND

[0002] With the deepening of deep-sea scientific research, the research on the abyssal zone (generally referring to a water depth of 6,000 meters to 11,000 meters) ecosystem has been increasingly concerned. The abyssal zone is one of the most mysterious and extreme ecological environments on Earth, and has unique macrobiota communities such as deep-sea polychaetes, isopods, and cephalopods. These organisms exhibit unique adaptation mechanisms and evolutionary characteristics in extremely high pressure, low temperature, and lightless environments, and have high scientific research value and potential biological resource utilization prospects.

[0003] However, the current research on abyssal macrobiota is still greatly limited, mainly because the existing sampling technology cannot maintain the original pressure in situ. Most traditional deep-sea sampling equipment cannot maintain the original high-pressure environment during the floating process, resulting in the death or irreversible changes in morphology and metabolic structure of the macrobiota samples during the recovery process due to decompression, thereby greatly affecting the authenticity of the samples and the accuracy of scientific research. SUMMARY

[0004] The present disclosure provides a compact deep-sea macrobiota pressure-maintaining sampling device and a pressure-maintaining sampling transfer system suitable for pressure-maintaining transfer, to at least solve one of the technical problems existing in the prior art.

[0005] In a first aspect, the present disclosure provides a compact deep-sea macrobiota pressure-maintaining sampling device suitable for pressure-maintaining transfer, comprising:

[0006] An oil pressure balance motor configured to balance the internal pressure of the motor with the external pressure when working;

[0007] A pressure-maintaining sampling cabin, comprising:

[0008] A sampling cabin outer cylinder having a first accommodating cavity;

[0009] A hollow drive lead screw having a second accommodating cavity, the hollow drive lead screw being arranged in the first accommodating cavity and in transmission connection with the output shaft of the oil pressure balance motor;

[0010] A lead screw nut sliding sleeve sleeved on the outside of the hollow drive lead screw and capable of reciprocating linearly along the length direction thereof;

[0011] A sampling cabin inner cylinder having a sampling opening and a third accommodating cavity, the sampling cabin inner cylinder being sleeved on the outside of the hollow drive lead screw and fixedly connected with the lead screw nut sliding sleeve;

[0012] The pressure-maintaining sampling cabin has a sampling state and a pressure-maintaining state. In the sampling state, the sampling opening of the sampling cabin inner cylinder is located outside the sampling cabin outer cylinder, and the sampling opening, the third accommodating cavity and the second accommodating cavity are in communication. In the pressure-maintaining state, the sampling cabin inner cylinder is sealingly accommodated in the first accommodating cavity.

[0013] In an implementation, the sampling cabin inner cylinder and the screw nut sliding sleeve are slidingly connected to the sampling cabin outer cylinder.

[0014] In an implementation, a sliding groove is formed in the first accommodating cavity inner wall along the length direction thereof, and a sliding block is arranged outside the screw nut sliding sleeve and slidingly connected to the sliding groove.

[0015] In an implementation, a first annular groove and a second annular groove are respectively formed in the outer walls of the sampling cabin inner cylinder on both sides of the sampling opening, and sealing rings are respectively arranged in the first annular groove and the second annular groove.

[0016] A third annular groove is formed in the outer wall of the hollow driving screw, and a sealing ring is arranged in the third annular groove.

[0017] In an implementation, the first annular groove and the second annular groove are formed along the axial direction of the sampling cabin inner cylinder, and the first annular groove is arranged at the first end of the sampling cabin inner cylinder away from the screw nut sliding sleeve.

[0018] In an implementation, the pressure-maintaining sampling cabin further comprises an adapter arranged outside the sampling cabin outer cylinder and connected to the first accommodating cavity, the adapter being used to be connected to an energy storage device, so that the pressure-maintaining sampling cabin can maintain the internal pressure unchanged in the pressure-maintaining state.

[0019] In an implementation, the adapter is provided with a plurality of adapters, at least one of which is connected to the energy storage device, and the remaining adapters are used to be connected to sensors correspondingly.

[0020] In an implementation, the pressure-maintaining sampling cabin further comprises a sampling cabin end cover fixedly connected to the sampling cabin outer cylinder, and one end of the hollow driving screw is transmissionally connected to the output shaft of the oil pressure balance motor after penetrating through the sampling cabin end cover.

[0021] The hollow driving screw and the sampling cabin end cover are connected through a deep groove ball bearing.

[0022] In an implementation, the pressure-maintaining sampling device further comprises a clamp, which is respectively sleeved outside the oil pressure balance motor and the sampling cabin outer cylinder.

[0023] A clamp seat is used to mount the clamp.

[0024] The integrated plate is arranged below the hoop seat and fixedly connected with the hoop seat.

[0025] In a second aspect, the application provides a pressure-maintaining sampling and transferring system, comprising a pressure-maintaining transferring device, and further comprising the pressure-maintaining sampling device according to any one of the preceding aspects.

[0026] The end of the sampling cabin outer cylinder away from the sampling cabin end cover is provided with an annular cover, and the annular cover is in sealing connection with the pressure-maintaining transferring device through a locking hoop.

[0027] Compared with the prior art, the application has the advantages that the application provides a compact deep-sea macroorganism pressure-maintaining sampling device suitable for pressure-maintaining transferring, which aims to capture, close and maintain the pressure of a macroorganism sample in an extreme deep-sea environment, uses a hollow drive lead screw as a driving structural member and as a part of a pressure-maintaining cabin, can reduce the size and weight of the device, and better meets the limitation requirements of a deep-sea submersible external load device. In addition, the device can be directly docked with a ship-borne culture test device, and does not need to use a large-sized ball valve for pressure-maintaining transferring. The application has important practical significance and application value, can significantly improve the quality of deep-sea life science research, and provides a reliable data basis for the fields of marine drugs, extreme environment adaptation mechanisms and biological evolution.

[0028] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which:

[0030] In the drawings, identical or corresponding reference numerals indicate identical or corresponding parts.

[0031] Figure 1 A structure schematic diagram of the pressure-maintaining sampling device of the embodiment of the present disclosure in a sampling state is shown;

[0032] Figure 2 A structure schematic diagram of the pressure-maintaining sampling device of the embodiment of the present disclosure in a pressure-maintaining state is shown;

[0033] Figure 3 A structure schematic diagram of the pressure-maintaining sampling cabin of the embodiment of the present disclosure in a sampling state is shown;

[0034] Figure 4 A semi-sectional schematic diagram of the pressure-maintaining sampling cabin of the embodiment of the present disclosure in a sampling state is shown.

[0035] Figure 5 Fig. 1 shows a structural schematic diagram of a pressure-maintaining sampling cabin in a pressure-maintaining state according to an embodiment of the present disclosure;

[0036] Figure 6 Fig. 2 shows a half-section schematic diagram of a pressure-maintaining sampling cabin in a pressure-maintaining state according to an embodiment of the present disclosure;

[0037] Figure 7 Fig. 3 shows a structural schematic diagram of a sampling cabin inner cylinder according to an embodiment of the present disclosure;

[0038] Figure 8 Fig. 4 shows a half-section schematic diagram of a sampling cabin inner cylinder according to an embodiment of the present disclosure;

[0039] Figure 9 Fig. 5 shows a structural schematic diagram of a sampling cabin outer cylinder according to an embodiment of the present disclosure;

[0040] Figure 10 Fig. 6 shows a half-section schematic diagram of a sampling cabin outer cylinder according to an embodiment of the present disclosure;

[0041] Figure 11 Fig. 7 shows a half-section schematic diagram of a hollow drive lead screw according to an embodiment of the present disclosure;

[0042] Figure 12 Fig. 8 shows a structural schematic diagram of a pressure-maintaining sampling device connected with a pressure-maintaining transfer device according to an embodiment of the present disclosure.

[0043] Fig. 1 shows a structural schematic diagram of a pressure-maintaining sampling cabin in a pressure-maintaining state according to an embodiment of the present disclosure; Fig. 2 shows a half-section schematic diagram of a pressure-maintaining sampling cabin in a pressure-maintaining state according to an embodiment of the present disclosure; Fig. 3 shows a structural schematic diagram of a sampling cabin inner cylinder according to an embodiment of the present disclosure; Fig. 4 shows a half-section schematic diagram of a sampling cabin inner cylinder according to an embodiment of the present disclosure; Fig. 5 shows a structural schematic diagram of a sampling cabin outer cylinder according to an embodiment of the present disclosure; Fig. 6 shows a half-section schematic diagram of a sampling cabin outer cylinder according to an embodiment of the present disclosure; Fig. 7 shows a half-section schematic diagram of a hollow drive lead screw according to an embodiment of the present disclosure; Fig. 8 shows a structural schematic diagram of a pressure-maintaining sampling device connected with a pressure-maintaining transfer device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] In order to make the objectives, features and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present disclosure.

[0045] The present application develops a compact deep-sea macroorganism pressure-maintaining sampling device suitable for pressure-maintaining transfer, which has important practical significance and application value. The device can complete the capture, sealing and pressure maintenance of macroorganism samples in an extreme deep-sea environment, provide a near in-situ state research condition under sea surface or laboratory conditions and can be pressure-maintained by a culture monitoring device for transfer. The device can not only significantly improve the quality of deep-sea life science research, but also provides a reliable data basis for the fields of marine drugs, extreme environment adaptation mechanisms and biological evolution.

[0046] The present application overcomes the deficiencies in the prior art and provides a compact deep-sea macroorganism pressure-maintaining sampling device suitable for pressure-maintaining transfer. On the basis of the existing sampling, the device is improved to reduce the size, better meet the size and weight requirements of the device for a deep-sea submersible and can be pressure-maintained by a ship-borne culture test device.

[0047] In a first aspect, as shown in the accompanying drawings, the present application provides a compact deep-sea macroorganism pressure-maintaining sampling device suitable for pressure-maintaining transfer (referred to as a "pressure-maintaining sampling device"), comprising: Figures 1-6 An oil pressure balance motor 1 is configured to balance the internal pressure of the motor with the external pressure when working;

[0048] A pressure-maintaining sampling cabin 3 comprises a sampling cabin outer cylinder 32 having a first accommodating cavity 321;

[0049] A hollow drive lead screw 33 has a second accommodating cavity 331, and the hollow drive lead screw 33 is arranged in the first accommodating cavity and in transmission connection with an output shaft 11 of the oil pressure balance motor 1;

[0050] A lead screw nut sliding sleeve 34 is sleeved on the outside of the hollow drive lead screw 33 and can reciprocate linearly along the length direction thereof;

[0051] A sampling cabin inner cylinder 35 has a sampling opening 354 and a third accommodating cavity 351, and the sampling cabin inner cylinder 35 is sleeved on the outside of the hollow drive lead screw 33 and fixedly connected with the lead screw nut sliding sleeve 34;

[0052] The pressure-maintaining sampling cabin 3 has a sampling state and a pressure-maintaining state. In the sampling state, as shown in the accompanying drawings, the sampling opening 354 of the sampling cabin inner cylinder 35 is located outside the sampling cabin outer cylinder 32, and the sampling opening 354, the third accommodating cavity 351 and the second accommodating cavity 331 are in communication; in the pressure-maintaining state, the sampling cabin inner cylinder 35 is sealingly accommodated in the first accommodating cavity 321, as shown in the accompanying drawings.

[0053] Figures 3-4 Figures 5-6

[0054] ​​​For example, the oil pressure balance motor 1 can balance the internal pressure of the motor with the external seawater pressure during operation. The oil pressure balance motor 1 is realized by using the existing known technology. For example, the deep-sea pressure compensation oil-filled motor based on the bladder structure disclosed in Chinese patent application (publication number CN110535277 A) can be used.

[0055] For example, as shown in Figures 9-10 The sampling cabin outer cylinder 32 is a cavity structure with both ends open. The first accommodating cavity 321 in the sampling cabin outer cylinder 32 is used to accommodate the hollow drive lead screw 33 and the sampling cabin inner cylinder 35.

[0056] As shown in Figures 7-8 The sampling cabin inner cylinder 35 is a cavity structure with one end open and the other end closed. The sampling opening 354 is formed on the outer wall away from the open end and is connected to the third accommodating cavity 351.

[0057] As shown in Figure 11 As shown (in order to facilitate the display, the threads at the position where the hollow drive lead screw 33 is connected to the lead screw nut sliding sleeve 34 are not shown), the hollow drive lead screw 33 is a cavity structure with one end open and the other end closed. The extension shaft extends outwardly from the closed end, so as to be connected to the output shaft 11 of the oil pressure balance motor 1 through the coupling.

[0058] For example, as shown in Figure 4 The sampling cabin inner cylinder 35 and the lead screw nut sliding sleeve 34 are slidingly connected to the sampling cabin outer cylinder 32.

[0059] For example, the inner wall of the first accommodating cavity 321 of the sampling cabin outer cylinder is provided with a sliding groove 3211 along the length direction thereof. The lead screw nut sliding sleeve 34 is provided with a sliding block 341 which is slidingly connected to the sliding groove 3211. The cooperation between the sliding groove 3211 and the sliding block 341 ensures that the lead screw nut sliding sleeve 34 performs linear reciprocating motion along the hollow drive lead screw 33. Further, as shown in Figure 4 The sliding groove 3211 is arranged at one end of the sampling cabin outer cylinder and is close to the oil pressure balance motor 1. Further, the sliding block 341 and the lead screw nut sliding sleeve 34 are an integral part.

[0060] In the present application, the hollow drive screw 33 is driven to rotate by the oil pressure balance motor 1. Since the screw nut sliding sleeve 34 is screw-connected to the outside of the hollow drive screw 33, the rotation of the hollow drive screw 33 is converted into linear motion, and cooperates with the sliding groove 3211 and the sliding block 341, so that when the hollow drive screw 33 rotates, the screw nut sliding sleeve 34 can move linearly along the hollow drive screw 33, thereby synchronously driving the sampling cabin inner cylinder 35 to move linearly. The second accommodating cavity 331 of the hollow drive screw 33 is an open cavity structure and is in communication with the sampling opening of the sampling cabin inner cylinder 35 and the third accommodating cavity 351 in the sampling state. Thus, when the sampling opening 354 of the sampling cabin inner cylinder 35 is driven to rotate by the hollow drive screw 33 to extend out of the sampling cabin outer cylinder 32, a passage is provided for the macroorganisms in the deep sea to enter. After the macroorganisms enter, the oil pressure balance motor 1 is reversed to make the sampling cabin inner cylinder 35 enter the sampling cabin outer cylinder 32, the hollow drive screw 33 is accommodated in the third accommodating cavity 351 of the sampling cabin inner cylinder, and the end inner surface of the sampling cabin inner cylinder 35 is in contact with the open end surface of the hollow drive screw. Then, the pressure inside the sampling cabin outer cylinder is maintained by using the energy storage device. Thus, the second accommodating cavity 331 of the hollow drive screw 33 also serves as part of the pressure maintaining cabin.

[0061] The present application provides a compact deep-sea macroorganism pressure maintaining sampling device suitable for pressure maintaining transfer, which aims to capture, close and maintain the pressure of the macroorganism sample in the extreme deep-sea environment. The hollow drive screw 33 is used as a driving structure and part of the pressure maintaining cabin, which can reduce the size and weight of the device and better meet the requirements of the external load device of the deep-sea submersible. In addition, the ship-borne culture test device can be directly docked without using a large-sized ball valve for pressure maintaining transfer. The present application has important practical significance and application value, which can significantly improve the quality of deep-sea life science research and provide reliable data basis for the fields of marine medicine, extreme environment adaptation mechanism and biological evolution.

[0062] In some embodiments, as shown in Figures 6-7 The first annular groove 352 and the second annular groove 353 are respectively formed on the outer wall of the sampling cabin inner cylinder 35 on both sides of the sampling opening 354, and the sealing ring 36 is installed on the first annular groove 352 and the second annular groove 353.

[0063] As shown in Figure 11 The third annular groove 332 is formed on the outer wall of the hollow drive screw 33, and the sealing ring 36 is installed on the third annular groove 332. When in the pressure maintaining state, the third annular groove 332 is arranged to avoid the position of the sampling opening 354. As shown in Figure 6As shown, the third annular groove 332 is arranged at the middle of the hollow drive screw, and is arranged behind the second annular groove 353. In this way, when the pressure-maintaining sampling cabin 3 is in the pressure-maintaining state, the hollow drive screw and the sampling cabin inner cylinder can be sealingly connected in the circumferential direction.

[0064] The cooperation of the first annular groove 352 and the second annular groove 353 arranged on the outer wall of the sampling cabin inner cylinder 35 and the sealing ring 36 can ensure that the sampling cabin inner cylinder and the sampling cabin outer cylinder are sealed when the pressure-maintaining sampling cabin 3 is in the pressure-maintaining state, thereby ensuring the stability of the internal pressure of the sampling cabin outer cylinder 32.

[0065] The third annular groove 332 arranged on the outer wall of the hollow drive screw 33 and the sealing ring 36 can ensure that the sampling cabin inner cylinder 35 and the hollow drive screw 33 are sealed when the pressure-maintaining sampling cabin 3 is in the pressure-maintaining state, thereby ensuring the stability of the internal pressure of the sampling cabin.

[0066] For example, as shown in Figure 6 The first annular groove 352 and the second annular groove 353 are arranged along the axial direction of the sampling cabin inner cylinder 35, and the first annular groove 352 is arranged at the first end of the sampling cabin inner cylinder 35 away from the screw nut sleeve 34. In this way, when the pressure-maintaining sampling cabin 3 is in the pressure-maintaining state, the cooperation of the first annular groove 352 and the sealing ring can isolate the pressure-maintaining sampling cabin 3 from the external environment, thereby ensuring the sealing of the entire pressure-maintaining sampling cabin 3.

[0067] In some embodiments, as shown in Figure 3 Figure 3 In some embodiments, as shown in

[0068] For example, the adapter 37 is provided with a plurality of adapters, at least one of which is connected to the energy storage device, and the remaining adapters 37 are used for corresponding connection with sensors.

[0069] For example, the sensors include but are not limited to pressure sensors and gas detection sensors, and the sensors can be arranged according to actual needs. The pressure sensor is used to detect changes in the internal pressure of the sampling cabin outer cylinder 32, and the gas detection sensor is used to detect the gas composition in seawater.

[0070] For example, as shown in Figure 6 The adapters 37 are arranged between the two annular grooves (first / second annular grooves) on the sampling cabin inner cylinder 35.

[0071] ​When the sampling of the pressure maintaining sampling chamber 3 is completed, the inner cylinder of the sampling chamber is returned to the outer cylinder of the sampling chamber. At this time, because the sampling opening 354 is arranged on the outer wall of the inner cylinder of the sampling chamber 35, the inner cylinder of the sampling chamber 35 is accommodated in the first accommodating cavity 321 of the outer cylinder of the sampling chamber 32 and is sleeved on the outside of the hollow driving lead screw 33. In addition, the first / second annular grooves and the sealing ring arranged on the inner cylinder of the sampling chamber make the inner cylinder of the sampling chamber 35 and the outer cylinder of the sampling chamber 32 be in sealed connection, and the third annular groove and the sealing ring on the outer wall of the hollow driving lead screw 33 make the hollow driving lead screw 33 and the inner cylinder of the sampling chamber be in sealed connection. Thus, the energy storage device (i.e. the accumulator) fills the in-situ seawater through the adapter and enters the gap between the inner cylinder of the sampling chamber and the outer cylinder of the sampling chamber located between the first annular groove 352 and the second annular groove 353 (including the space where the sampling opening 354 is located), and even enters the second accommodating cavity 331 of the hollow driving lead screw from the sampling opening 354. In this way, the lost pressure inside the outer cylinder of the sampling chamber 32 is compensated, so that the pressure inside the outer cylinder of the sampling chamber 32 is kept stable. Then, the gas detection sensor detects the gas components in the seawater after the seawater fills the pressure maintaining sampling chamber.

[0072] In some embodiments, as shown in Figure 6 the pressure maintaining sampling device further comprises a sampling chamber end cover 31 which is fixedly connected with the outer cylinder of the sampling chamber 32, and one end of the hollow driving lead screw 33 passes through the sampling chamber end cover 31 and is in driving connection with the output shaft of the oil pressure balance motor 1.

[0073] The hollow driving lead screw 33 and the sampling chamber end cover 31 are connected through the deep groove ball bearing 38.

[0074] As shown in Figure 4 the middle part of the sampling chamber end cover 31 is provided with a avoiding opening 311, one end of the hollow driving lead screw 33 passes through the avoiding opening 311 and is connected with the output shaft 11 of the oil pressure balance motor 1 through the shaft coupling 2. One end of the hollow driving lead screw 33 and the avoiding opening 311 of the sampling chamber end cover 31 are connected through the deep groove ball bearing 38, so that when the output shaft of the oil pressure balance motor rotates, the hollow driving lead screw 33 is synchronously driven to rotate.

[0075] In some embodiments, as shown in Figures 1-2 the pressure maintaining sampling device further comprises a clamp 5 which is sleeved on the outside of the oil pressure balance motor 1 and the outer cylinder of the sampling chamber 32, respectively.

[0076] A clamp seat 4 is arranged for mounting the clamp 5.

[0077] An integrated plate 6 is arranged below the clamp seat 4 and is fixedly connected with the clamp seat 4.

[0078] The connection stability between the pressure-maintaining sampling cabin 3 and the oil pressure balance motor 1 is further ensured by the integrated plate 6, the clamp seat 4 and the clamp 5. Thus, when operating in the abyssal zone, the pressure-maintaining sampling device is ensured not to be affected by the external environment, and the stability during operation is ensured.

[0079] In a second aspect, as Figure 12 indicated, the application also provides a pressure-maintaining sampling transfer system, which comprises a pressure-maintaining transfer device 8 and the pressure-maintaining sampling device 9 in any of the above embodiments;

[0080] The end of the sampling cabin outer cylinder 32 away from the sampling cabin end cover 31 is provided with an annular cover 322, and the annular cover 322 is sealingly connected with the pressure-maintaining transfer device 8 through the locking clamp 7.

[0081] As Figure 12 indicated, the end surface of the pressure-maintaining transfer device 8 is provided with a sealing ring, and the pressure-maintaining transfer device 8 has a transfer cabin 81. When it is necessary to transfer the sample in the pressure-maintaining sampling cabin 3 to the pressure-maintaining transfer device 8, the pressure-maintaining transfer device is sealingly connected with the annular cover 322 of the sampling cabin outer cylinder through the locking clamp 7, and the internal pressure of the pressure-maintaining transfer device 8 and the internal pressure of the pressure-maintaining sampling cabin 3 are kept in balance. Then the oil pressure balance motor 1 is driven, so that the sampling cabin inner cylinder 35 enters the transfer cabin of the pressure-maintaining transfer device, thereby realizing the subsequent research work such as transfer, culture and testing of the sample (i.e. abyssal macroorganisms) under the in-situ environmental pressure condition.

[0082] The working process of the pressure-maintaining sampling device of the application will be further described below:

[0083] The hollow drive lead screw 33 is rotated by the oil pressure balance motor 1, thereby driving the lead screw nut sliding sleeve 34 to move along the sliding groove on the inner wall of the sampling cabin outer cylinder, thereby driving the sampling opening of the sampling cabin inner cylinder 35 to completely extend, providing a passage for the entry of deep-sea macroorganisms, as Figures 3-4 indicated. After the macroorganisms enter, the oil pressure balance motor 1 is reversed, and the sampling cabin inner cylinder 35 enters the sampling cabin outer cylinder 32 until the axial sealing ring at the end of the sampling cabin inner cylinder 35 enters the sampling cabin outer cylinder 32. In addition, after the sampling cabin inner cylinder 35 enters the sampling cabin outer cylinder 32, the adapter 37 is placed between the two annular sealing grooves of the sampling cabin inner cylinder (i.e. between the first annular groove and the second annular groove), thereby realizing the pressure maintenance inside the pressure-maintaining sampling device 9, as Figures 5-6 indicated.

[0084] As Figure 12As shown, after the sampling is completed, the whole pressure-maintaining sampling device is lifted to the deck or the laboratory, the sampling cabin outer cylinder 32 is connected with the pressure-maintaining transfer device 8 through the locking hoop 7, the oil balance motor 1 drives the hollow drive lead screw 33 to rotate, the sampling cabin inner cylinder 35 is slightly exposed to the sampling cabin outer cylinder 32, the pressure on both sides of the pressure-maintaining transfer device 8 and the pressure-maintaining sampling device 9 is adjusted and balanced, the oil balance motor is driven, and the sampling cabin inner cylinder 35 enters the pressure-maintaining transfer device 8, so that the subsequent research work such as transfer, culture and test of abyssal macroorganisms under the in-situ environmental pressure condition is realized.

[0085] It should be understood that the terms "first", "second", "third" and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and are not intended to limit the scope of the application to a given embodiment or implementation.

[0086] The terms "one embodiment", "an embodiment", "some embodiments", "exemplary", "specific example" or "some examples" and the like refer to specific examples of the disclosure that are not intended to be limiting. The description herein of one or more embodiments or examples does not mean that a combining of features, parts, or steps used in the described embodiments or examples cannot be used in other embodiments or examples. In fact, features, parts, or steps from different embodiments or examples can be combined in any appropriate manner to achieve the objectives of the disclosure.

[0087] The terms "center", "longitudinal", "lateral", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0088] "Up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0089] Unless otherwise expressly specified and limited, the terms "connect," "directly connected," "indirectly connected," "fixedly connected," "mount," and "assemble" should be given their broadest meaning, for example, they can be connected by any medium known or to be discovered, for example, fixedly connected, removably connected, or integrally connected; the terms "mount," "connect," and "fixedly connected" can be directly connected, or indirectly connected through an intermediate medium, or connected in internal communication between two elements; for those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0090] The above description is merely a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A compact deep-sea macrofauna pressure-maintained sampling device suitable for pressure transfer, characterized in that: The pressure maintaining sampling device comprises: an oil pressure balance motor configured to balance the pressure inside the motor with the external pressure when working; a pressure maintaining sampling chamber comprising: a sampling chamber outer cylinder having a first accommodating cavity; a hollow drive lead screw having a second accommodating cavity, the hollow drive lead screw being arranged in the first accommodating cavity and being in transmission connection with an output shaft of the oil pressure balance motor; a lead screw nut sliding sleeve being sleeved on the outside of the hollow drive lead screw and being capable of reciprocating linearly along the length direction thereof; a sampling chamber inner cylinder having a sampling opening and a third accommodating cavity, the sampling chamber inner cylinder being sleeved on the outside of the hollow drive lead screw and being in fixed connection with the lead screw nut sliding sleeve; wherein the pressure maintaining sampling chamber has a sampling state and a pressure maintaining state, in the sampling state, the sampling opening of the sampling chamber inner cylinder is located outside the sampling chamber outer cylinder, and the sampling opening, the third accommodating cavity and the second accommodating cavity are in communication; in the pressure maintaining state, the sampling chamber inner cylinder is sealingly accommodated in the first accommodating cavity.

2. The pressure retaining sampling device of claim 1, wherein: The sampling chamber inner cylinder and the lead screw nut sliding sleeve are in sliding connection with the sampling chamber outer cylinder.

3. The pressure holding sampling device of claim 2, wherein: A sliding groove is formed on the inner wall of the first accommodating cavity along the length direction thereof, a sliding block is arranged on the outside of the lead screw nut sliding sleeve, and the sliding block is in sliding connection with the sliding groove.

4. The pressure holding sampling device of claim 1, wherein: First and second annular grooves are respectively formed on the outer wall of the sampling chamber inner cylinder on both sides of the sampling opening, and sealing rings are respectively arranged on the first and second annular grooves; A third annular groove is formed on the outer wall of the hollow drive lead screw, and a sealing ring is arranged on the third annular groove.

5. The pressure holding sampling device of claim 4, wherein: The first and second annular grooves are formed along the axial direction of the sampling chamber inner cylinder, and the first annular groove is arranged at the end portion of the first end of the sampling chamber inner cylinder away from the lead screw nut sliding sleeve.

6. The pressure retaining sampling device of claim 1, wherein: The pressure maintaining sampling chamber further comprises: an adapter arranged on the outside of the sampling chamber outer cylinder and connected with the first accommodating cavity, the adapter being used for being connected with an energy storage device, so that the pressure maintaining sampling chamber can keep the internal pressure unchanged in the pressure maintaining state.

7. The pressure holding sampling device of claim 6, wherein: The adapter is provided with a plurality of adapters, at least one of which is connected with the energy storage device, and the remaining adapters are used for being connected with sensors correspondingly.

8. The pressure retaining sampling device of any one of claims 1-7, wherein: The pressure maintaining sampling device further comprises: a sampling chamber end cover fixedly connected with the sampling chamber outer cylinder, one end of the hollow drive lead screw penetrating through the sampling chamber end cover and being in transmission connection with the output shaft of the oil pressure balance motor; The hollow drive lead screw and the sampling chamber end cover are connected through a deep groove ball bearing.

9. The pressure holding sampling device of claim 8, wherein: The pressure maintaining sampling device further comprises: a clamp respectively sleeved on the outside of the oil pressure balance motor and the sampling chamber outer cylinder; a clamp seat for mounting the clamp; an integrated plate arranged below the clamp seat and fixedly connected with the clamp seat.

10. A hold-up sampling transfer system comprising a hold-up transfer device, characterized by: The pressure maintaining sampling device according to any one of claims 1-9 is further provided. An annular cover is arranged at one end of the sampling chamber outer cylinder away from the sampling chamber end cover, and the annular cover is sealingly connected with the pressure maintaining transfer device through a locking clamp.

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