A locking tongue sealing device for a pressure-maintaining cylinder of a deep-sea fidelity sampler

Abstract

The present invention relates to the technical field of deep-sea in-situ fidelity sampling, and in particular to a deep-sea fidelity sampler pressure-maintaining cylinder lock tongue sealing device, comprising a pressure-maintaining cylinder installed on one side of a main frame, a sealing mechanism for sealing the bottom of the pressure-maintaining cylinder installed at the bottom of the main frame, the sealing mechanism comprising a lock tongue sealing end cover arranged at the bottom of the pressure-maintaining cylinder and matched therewith, and a lock tongue fixing hole provided on the inner wall of the bottom of the pressure-maintaining cylinder, the lock tongue sealing end cover is respectively provided with a plurality of lock tongue limiting holes distributed in a circumferential array, the inner sides of the plurality of lock tongue limiting holes are respectively slidably provided with sealing lock tongues, and one end of the sealing lock tongue is slidably connected to the lock tongue fixing hole. The lock tongue sealing end cover of the present invention is moved to the bottom of the pressure-maintaining cylinder under the action of a hydraulic cylinder, and the pressure-maintaining cylinder is sealed by lifting the hydraulic cylinder using the pressure-maintaining cylinder, so that the fast and efficient mobile sealing of the large-caliber pressure-maintaining cylinder can be realized, and it is ensured that the sample in the pressure-maintaining cylinder can maintain the deep-sea in-situ pressure after the deep-sea sampling is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of deep - sea in - situ fidelity sampling, and particularly to a pressure - maintaining cylinder sealing device for a deep - sea fidelity sampler. Background Art

[0002] In current marine resource exploration, the multi - medium environment of deep - sea sediments, sea water, and organisms is a key carrier for analyzing the migration and transformation of deep - sea bottom substances and the evolution of extreme ecosystems. The high - pressure, low - temperature, and strong - corrosive characteristics of the deep - sea region pose strict requirements on sealing technology. In the deep - sea, the pressure can exceed hundreds of atmospheric pressures. Traditional sampling device pressure - maintaining cylinder sealing devices still have some problems in achieving in - situ state mobile sealing in the deep - sea, making it difficult to stably maintain the continuous sealing of the pressure - maintaining cylinder and resulting in sealing failure. Summary of the Invention

[0003] Aiming at the deficiencies of the existing sampling device pressure - maintaining cylinder sealing technology, the present invention provides a tongue - lock sealing device for a pressure - maintaining cylinder of a deep - sea fidelity sampler, which solves the problems that the existing technology cannot achieve mobile sealing and the sealing end - cover is prone to falling off in the deep - sea in - situ environment, and realizes the purpose of deep - sea mobile sealing and non - falling of the sealing end - cover.

[0004] To solve the above - mentioned technical problems, the present invention provides the following technical solutions: A tongue - lock sealing device for a pressure - maintaining cylinder of a deep - sea fidelity sampler, including a pressure - maintaining cylinder installed on one side of the main body frame. A sealing mechanism for installing at the bottom of the pressure - maintaining cylinder and sealing it is provided at the bottom of the main body frame. A moving slide rail for moving the sealing mechanism to the bottom of the pressure - maintaining cylinder is also provided at the bottom of the main body frame. The sealing mechanism includes a tongue - lock sealing end - cover arranged at the bottom of the pressure - maintaining cylinder and matching with it, and a tongue - lock fixing hole opened on the inner wall of the bottom of the pressure - maintaining cylinder. A number of circumferentially - arrayed tongue - lock limiting holes are respectively opened on the tongue - lock sealing end - cover. Sealing tongues are respectively slidably arranged inside the number of tongue - lock limiting holes, and one end of the sealing tongue is slidably connected with the tongue - lock fixing hole. A sealing top - cover is detachably arranged at the bottom of the tongue - lock sealing end - cover. A transmission component for synchronously driving the number of sealing tongues to move is arranged inside the tongue - lock sealing end - cover.

[0005] As a further optimized solution of the present invention, a first sealing O - ring and a second sealing O - ring are successively detachably arranged on the top of the tongue - lock sealing end - cover, and both the first sealing O - ring and the second sealing O - ring match the inner wall of the bottom of the pressure - maintaining cylinder.

[0006] As a further optimized solution of the present invention, a first sealing - ring installation groove and a second sealing - ring installation groove are respectively opened on the top of the sealing top - cover. A first sealing ring and a second sealing ring in contact with the inner wall of the tongue - lock sealing end - cover are respectively arranged inside the first sealing - ring installation groove and the second sealing - ring installation groove.

[0007] As a further optimized solution of the present invention, a sliding transverse groove is provided at one end of the sealing locking tongue, and a limiting transverse shaft fixed to the sealing end cover of the locking tongue is slidably arranged inside the sliding transverse groove.

[0008] As a further optimized solution of the present invention, the transmission assembly includes a locking tongue support disk fixedly installed inside the sealing end cover of the locking tongue, and a plurality of sliding tracks fixedly arranged on the locking tongue support disk and distributed in a circumferential array. The bottoms of the plurality of sealing locking tongues are respectively fixedly installed with locking tongue sliders, and the plurality of locking tongue sliders are respectively slidably connected with the plurality of sliding tracks.

[0009] As a further optimized solution of the present invention, a disk-shaped gear meshing with the plurality of locking tongue sliders is arranged at the bottom of the locking tongue support disk, and a bearing fixing block fixed to the locking tongue support disk is rotatably arranged at the center of the axis of the disk-shaped gear through a bearing.

[0010] As a further optimized solution of the present invention, a support ring body fixed to the sealing end cover of the locking tongue is rotatably arranged on the outer side of the bottom of the disk-shaped gear, and an external gear is also fixedly arranged at the bottom of the disk-shaped gear, and an internal gear is meshed inside the external gear.

[0011] As a further optimized solution of the present invention, a motor groove is provided at the top of the sealing top cover, and a rotary motor with an output shaft fixed to the center of the axis of the internal gear is arranged inside the motor groove.

[0012] By means of the above technical solutions, the present invention provides a locking tongue sealing device for a pressure-holding cylinder of a deep-sea fidelity sampler, which at least has the following beneficial effects:

[0013] 1. The present invention effectively and permanently seals the bottom of the pressure-holding cylinder by setting a sealing mechanism. The sealing end cover of the locking tongue is docked with the bottom of the pressure-holding cylinder, and then a plurality of sealing locking tongues are used to clamp the sealing end cover of the locking tongue to the bottom of the pressure-holding cylinder, making the sealing end cover of the locking tongue more stable when fixed on the pressure-holding cylinder, which can effectively and permanently maintain the sealing performance of the pressure-holding cylinder, ensure the pressure inside the pressure-holding cylinder, prevent seawater from seeping in, extend the service life of the sealing device, and at the same time ensure that the samples inside the sampler are not affected by the external environment in the deep-sea environment, improve the accuracy of the sampling results, thereby ensuring the authenticity and integrity of the samples, realizing the quick, convenient and highly efficient sealing effect of deep-sea sealing for the mobile sealing and locking tongue sealing device in the deep-sea in-situ state.

[0014] 2. The present invention improves the setting of a transmission component to synchronously drive a plurality of sealing locking tongues to move from the locking tongue limiting holes to the locking tongue fixing holes, clamping the locking tongue sealing end cover at the bottom of the pressure maintaining cylinder, thereby sealing the pressure maintaining cylinder. On the one hand, it improves the convenience of the sealing process of the pressure maintaining cylinder, enables quick locking and release, reduces the difficulty of manual operation, and improves the efficiency and safety of the sampling process. On the other hand, the sealing device with stable structure can improve the reliability of the sealing of the pressure maintaining cylinder and provide a lasting sealing performance.

[0015] 3. The top of the locking tongue sealing end cover of the present invention is sequentially provided with a first sealing O-ring and a second sealing O-ring, and the sealing top cover is respectively provided with a first sealing ring and a second sealing ring to perform multiple seals on the pressure maintaining cylinder and the sealing device. Because in the deep-sea environment, the pressure is very high, and it is optimized for these extreme environments to ensure the stability of the sealing device during deep-sea operations and the reliability of long-term use, it can withstand the challenges of the deep-sea high-pressure environment, maintain a stable sealing effect, and avoid failure under deep-sea high pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application, form a part of the present application, and the illustrative embodiments and descriptions thereof of the present application are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a front sectional view schematic diagram of the present invention;

[0019] Figure 3 is a schematic diagram of the structure of the sealing mechanism of the present invention;

[0020] Figure 4 is a front sectional view of the sealing mechanism of the present invention;

[0021] Figure 5 is an exploded structure schematic diagram of the transmission component of the present invention;

[0022] Figure 6 is a schematic diagram of the hydraulic system of the present invention;

[0023] Figure 7 is a sealing flow chart of the present invention;

[0024] In the figure: 1. Main body frame; 2. Pressure maintaining cylinder; 3. Sealing mechanism; 31. Locking tongue sealing end cover; 32. Locking tongue fixing hole; 33. Locking tongue limiting hole; 34. Sealing locking tongue; 35. Sealing top cover; 36. Sliding transverse groove; 37. Limiting horizontal axis.

[0025] 38. Transmission assembly; 381. Lock tongue support disk; 382. Sliding track; 383. Lock tongue slider; 384. Disk-shaped gear; 385. Bearing fixing block; 386. Support ring body; 387. External gear; 388. Internal gear; 389. Rotating motor;

[0026] 4. Moving slide rail; 5. First sealing O-ring; 6. Second sealing O-ring; 7. First layer sealing ring installation groove; 8. Second layer sealing ring installation groove. Specific implementation mode

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] First embodiment

[0029] The deep-sea fidelity sampler is a high-precision device for deep-sea exploration and research, specifically designed to collect water samples, sediments or biological samples in the deep-sea environment while ensuring the original state and authenticity of the samples. Since the traditional sealing device may cause wear, deformation or failure of the lock tongue after long-term use in such a harsh environment, it is difficult to maintain effectiveness and reliability. In order to effectively and long-term maintain the sealing performance of the pressure-holding cylinder 2, ensure the pressure inside the pressure-holding cylinder, prevent seawater from seeping in, and extend the service life of the sealing device, as Figure 1 - Figure 5 shown, this embodiment provides a lock tongue sealing device for the pressure-holding cylinder of a deep-sea fidelity sampler, which is composed of a main body frame 1, a pressure-holding cylinder 2, a sealing mechanism 3 and a moving slide rail 4. The pressure-holding cylinder 2 is installed on one side of the main body frame 1. The main body frame 1 is a fixed frame and a lifting frame for the sampling and sealing device, which is convenient for equipment transfer; a pressure-holding cylinder 2 is installed on one side of the main body frame 1. There is a sampling cylinder inside the pressure-holding cylinder 2. The pressure-holding cylinder 2 mainly cooperates with the sealing device to realize the pressure-holding storage of the samples inside the sampling cylinder. The entire sealing process is realized by a hydraulic method.

[0030] During the process of lifting the sampler from the seabed to the ground after sampling, the pressure of the sampler gradually decreases, while the pressure inside the pressure-holding cylinder 2 is relatively high. Due to the pressure difference between the inside and outside, it is easy for the sealing cover to fall off, resulting in the problem of the sealing failure of the sampling cylinder. In order to ensure that the samples inside the sampler are not affected by the external environment in the deep-sea environment and improve the sealing stability of the sampler, the sealing mechanism 3 is arranged at the bottom of the main frame 1 and is used to be installed at the bottom of the pressure-holding cylinder 2 and seal it. The sealing mechanism 3 includes a tongue-and-groove sealing end cover 31 arranged at the bottom of the pressure-holding cylinder 2 and matching with it, and a tongue-and-groove fixing hole 32 opened on the inner wall of the bottom of the pressure-holding cylinder 2. Four tongue-and-groove limiting holes 33 are respectively opened on the tongue-and-groove sealing end cover 31 and are arranged in a circumferential array. Sealing tongues 34 are respectively slidably arranged inside the four tongue-and-groove limiting holes 33, and one end of the sealing tongue 34 is slidably connected with the tongue-and-groove fixing hole 32. When the sealing tongue 34 moves from the tongue-and-groove limiting hole 33 to the tongue-and-groove fixing hole 32, the tongue-and-groove sealing end cover 31 can be clamped at the bottom of the pressure-holding cylinder 2. A sealing top cover 35 is arranged at the bottom of the tongue-and-groove sealing end cover 31, and the tongue-and-groove sealing end cover 31 and the sealing top cover 35 are fixedly connected by a plurality of bolts. A sliding transverse groove 36 is opened at one end of the sealing tongue 34, and a limiting transverse shaft 37 fixed to the tongue-and-groove sealing end cover 31 is slidably arranged inside the sliding transverse groove 36. The sealing tongue 34 is sleeved and moves outside one end of the limiting transverse shaft 37, making the movement of the sealing tongue 34 more stable, thereby improving the sealing reliability of the sealing tongue 34 and being able to provide a lasting sealing performance.

[0031] The pressure-holding cylinder 2 is driven by an external sealing hydraulic cylinder to move in the vertical direction, and the tongue-and-groove sealing end cover 31 is driven by an external sealing hydraulic cylinder to move in the horizontal direction, as Figure 6 shown. The main function of the hydraulic system is to use hydraulic pressure to drive and realize the sealing of the sampling cylinder.

[0032] A moving slide rail 4 for moving the sealing mechanism 3 to the bottom of the pressure-holding cylinder 2 is also arranged at the bottom of the main frame 1. The moving slide rail 4 drives the sealing mechanism 3 to move at the bottom of the main frame 1. When the pressure-holding cylinder 2 needs to be sealed, the moving slide rail 4 drives the sealing mechanism 3 to move directly below the pressure-holding cylinder 2, and then the pressure-holding cylinder 2 is driven to move downward by the sealing hydraulic cylinder, so that the sealing mechanism 3 matches with the bottom of the pressure-holding cylinder 2.

[0033] Second Embodiment

[0034] In order to achieve quick locking and release, reduce the difficulty of manual operation, and improve the efficiency and safety of the sampling process, as Figure 4 and Figure 5As shown in the figure, in this embodiment, a transmission assembly 38 for synchronously driving the movement of four sealing locking tongues 34 is provided inside the sealing end cap 31 of the locking tongue. The transmission assembly 38 includes a locking tongue support disk 381 fixedly installed inside the sealing end cap 31 of the locking tongue, and four sliding tracks 382 fixedly arranged on the locking tongue support disk 381 and distributed in a circumferential array. Locking tongue sliders 383 are fixedly installed at the bottoms of the four sealing locking tongues 34, and the four locking tongue sliders 383 are respectively slidably connected to the four sliding tracks 382. A disk-shaped gear 384 that meshes with all four locking tongue sliders 383 is provided at the bottom of the locking tongue support disk 381. When the disk-shaped gear 384 rotates, it drives the four locking tongue sliders 383 to move linearly simultaneously. A bearing fixing block 385 fixed to the locking tongue support disk 381 is rotatably arranged through a bearing at the axis center of the disk-shaped gear 384. A support ring body 386 fixed to the sealing end cap 31 of the locking tongue is rotatably arranged on the outer side of the bottom of the disk-shaped gear 384, making the rotation of the spiral gear more stable. An external gear 387 is also fixedly arranged at the bottom of the disk-shaped gear 384. An internal gear 388 is meshed inside the external gear 387. A motor slot is opened at the top of the sealing top cover 35, and a rotating motor 389 with an output shaft fixed to the axis center of the internal gear 388 is arranged inside the motor slot.

[0035] When the sealing top cover 35 is fixed to the bottom of the sealing end cap 31 of the locking tongue, the motor slot of the sealing top cover 35 just cooperates with the rotating motor 389, and the rotating motor 389 is fixed on the sealing top cover 35 to ensure the stability of the rotating motor 389 during operation.

[0036] Third Embodiment

[0037] In order to perform multiple seals on the pressure-holding cylinder 2 and the sealing device for the high-pressure environment in the deep sea, ensure the stability of the sealing device during deep-sea operations and the reliability of long-term use, and maintain a stable sealing effect, as Figures 4 - 7 shown, in this embodiment, a first sealing O-ring 5 and a second sealing O-ring 6 are detachably arranged in sequence on the top of the sealing end cap 31 of the locking tongue, and both the first sealing O-ring 5 and the second sealing O-ring 6 match the inner wall of the bottom of the pressure-holding cylinder 2. The sealing end cap 31 of the locking tongue and the bottom of the pressure-holding cylinder 2 are sealed through the first sealing O-ring 5 and the second sealing O-ring 6, which can improve the reliability of the seal of the pressure-holding cylinder 2, provide a lasting sealing performance, and avoid failure under the high pressure in the deep sea.

[0038] On the top of the sealed top cover 35, a first sealing ring installation groove 7 and a second sealing ring installation groove 8 are respectively provided. Inside the first sealing ring installation groove 7 and the second sealing ring installation groove 8, a first sealing ring and a second sealing ring that are in contact with the inner wall of the locking tongue sealing end cover 31 are respectively arranged. The cross-section of the sealed top cover 35 is set as a "convex" shape. The first sealing ring installation groove 7 is located on the vertical wall at the top of the sealed top cover 35, and the second sealing ring installation groove 8 is located on the top plane of the sealed top cover 35, thereby improving the sealing performance of the entire locking tongue sealing end cover 31.

[0039] In the present invention, the locking tongue sealing end cover 31 of the sealing mechanism 3 is butted against the bottom of the pressure maintaining cylinder 2, and then a plurality of sealing locking tongues 34 are used to clamp the locking tongue sealing end cover 31 to the bottom of the pressure maintaining cylinder 2, which can effectively and permanently maintain the sealing performance of the pressure maintaining cylinder 2, extend the service life of the sealing device, and at the same time ensure that the samples inside the sampler are not affected by the external environment in the deep-sea environment, improving the accuracy of the sampling results.

[0040] During the actual use of this sealing device, the entire sealing mechanism 3 is driven by the moving slide rail 4 to move directly below the pressure maintaining cylinder 2, and then the pressure maintaining cylinder 2 is driven to move downward by the sealing hydraulic cylinder, so that the locking tongue sealing end cover 31 is inserted into the inner side of the bottom of the pressure maintaining cylinder 2. The first sealing O-ring 5 and the second sealing O-ring 6 are respectively in contact with the inner wall of the bottom of the pressure maintaining cylinder 2. Then, the rotating motor 389 is started. The output shaft of the rotating motor 389 drives the internal gear 388 to rotate. The internal gear 388 drives the external gear 387 meshing with it to rotate. The external gear 387 drives the disk-shaped gear 384 at its top to rotate. The disk-shaped gear 384 drives four locking tongue sliders 383 to slide simultaneously. The locking tongue sliders 383 move in the corresponding sliding tracks 382. The locking tongue sliders 383 drive the sealing locking tongues 34 at their tops to slide inside the locking tongue limiting holes 33. One end of the sealing locking tongue 34 enters the locking tongue fixing hole 32, clamping the locking tongue sealing end cover 31 to the bottom of the pressure maintaining cylinder 2, which can effectively and permanently maintain the sealing performance of the pressure maintaining cylinder 2.

[0041] It should be noted that in this article, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deep-sea fidelity sampler pressure-maintaining cylinder lock tongue sealing device, comprising a pressure-maintaining cylinder (2) mounted on one side of a main frame (1), characterized in that: A sealing mechanism (3) is provided at the bottom of the main frame (1) for being installed on the bottom of the pressure-maintaining cylinder (2) and sealing it, and a movable slide rail (4) is also provided at the bottom of the main frame (1) for moving the sealing mechanism (3) to the bottom of the pressure-maintaining cylinder (2); The sealing mechanism (3) comprises a locking tongue sealing end cover (31) arranged at the bottom of the pressure-maintaining cylinder (2) and matched therewith, and a locking tongue fixing hole (32) provided on the inner wall of the bottom of the pressure-maintaining cylinder (2), a plurality of locking tongue limiting holes (33) distributed in a circumferential array are provided on the locking tongue sealing end cover (31), a sealing locking tongue (34) is slidably provided on the inner sides of the plurality of locking tongue limiting holes (33), and one end of the sealing locking tongue (34) is slidably connected to the locking tongue fixing hole (32), a sealing top cover (35) is detachably provided on the bottom of the locking tongue sealing end cover (31), and a transmission assembly (38) for synchronously driving the plurality of sealing locking tongues (34) to move is provided on the inner side of the locking tongue sealing end cover (31); The transmission assembly (38) comprises a lock tongue support plate (381) fixedly mounted on the inner side of the lock tongue sealing end cover (31), and a plurality of sliding tracks (382) fixedly mounted on the lock tongue support plate (381) and distributed in a circumferential array. The bottoms of the plurality of sealing lock tongues (34) are respectively fixedly mounted with lock tongue sliders (383), and the plurality of lock tongue sliders (383) are respectively slidably connected to the plurality of sliding tracks (382). The bottom of the lock tongue support plate (381) is provided with a plurality of sliding tracks (382) connected to the plurality of sealing lock tongues (34). The locking tongue slider (383) is meshed with a disc gear (384), a bearing fixing block (385) fixed to the locking tongue support disc (381) is rotatably provided at the axis of the disc gear (384) through a bearing, a supporting ring body (386) fixed to the locking tongue sealing end cover (31) is rotatably provided at the bottom outer side of the disc gear (384), an outer gear (387) is also fixedly provided at the bottom of the disc gear (384), and an inner gear (388) is meshed with the inner side of the outer gear (387).

2. A deep-sea fidelity sampler pressure-maintaining cylinder lock tongue sealing device according to claim 1, characterized in that: A first sealing O-ring (5) and a second sealing O-ring (6) are detachably provided on the top of the locking tongue sealing end cover (31), and both the first sealing O-ring (5) and the second sealing O-ring (6) match the inner wall of the bottom of the pressure-maintaining cylinder (2).

3. A deep-sea fidelity sampler pressure-maintaining cylinder lock tongue sealing device according to claim 1, characterized in that: The top of the sealing top cover (35) is respectively provided with a first sealing ring installation groove (7) and a second sealing ring installation groove (8), and the inner sides of the first sealing ring installation groove (7) and the second sealing ring installation groove (8) are respectively provided with a first sealing ring and a second sealing ring that are in contact with the inner wall of the locking tongue sealing end cover (31).

4. A deep sea fidelity sampler pressure-maintaining cylinder lock tongue sealing device according to claim 1, characterized in that: A sliding transverse groove (36) is formed at one end of the sealing lock tongue (34), and a limiting transverse shaft (37) fixed to the lock tongue sealing end cover (31) is slidably arranged inside the sliding transverse groove (36).

5. A deep sea fidelity sampler pressure-maintaining cylinder lock tongue sealing device according to claim 1, characterized in that: A motor slot is provided at the top of the sealing top cover (35), and a rotating motor (389) is provided inside the motor slot and the output shaft is fixed at the axis of the internal gear (388).

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