Spring bolt sealing device for pressure maintaining cylinder of deep-sea fidelity sampler

Abstract

The invention relates to the technical field of deep sea in-situ fidelity sampling, in particular to a deep sea fidelity sampler pressure maintaining cylinder spring bolt sealing device which comprises a pressure maintaining cylinder installed on one side of a main body frame, and a sealing mechanism used for sealing the bottom of the pressure maintaining cylinder is installed at the bottom of the main body frame. The spring bolt sealing end cover is arranged at the bottom of the pressure maintaining cylinder and matched with the pressure maintaining cylinder, the spring bolt fixing hole is formed in the inner wall of the bottom of the pressure maintaining cylinder, a plurality of spring bolt limiting holes distributed in a circumferential array mode are formed in the spring bolt sealing end cover, and sealing locking bolts are arranged on the inner sides of the spring bolt limiting holes in a sliding mode. And one end of the sealing lock tongue is in sliding connection with the lock tongue fixing hole. The spring bolt sealing end cover is moved to the position below the pressure maintaining cylinder under the action of the hydraulic cylinder, the hydraulic cylinder is lifted through the pressure maintaining cylinder to complete sealing of the pressure maintaining cylinder, rapid and efficient movable sealing of the large-diameter pressure maintaining cylinder can be achieved, and it is guaranteed that after deep sea sampling is completed, a sample in the pressure maintaining cylinder can keep deep sea in-situ pressure.

Description

Technical Field

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

[0002] In the current exploration of marine resources, deep-sea sediments, seawater and biological multimedia environments are key carriers for analyzing the migration and transformation of deep-sea materials and the evolution of extreme ecosystems. The high pressure, low temperature and strong corrosive characteristics of the deep sea area place strict demands on sealing technology. In the deep sea, the pressure can exceed hundreds of atmospheres. The traditional sampler pressure-maintaining cylinder sealing device still has some problems in achieving deep-sea in-situ mobile sealing. It is difficult to stably maintain the continuous sealing of the pressure-maintaining cylinder, and there is a problem of sealing failure. Summary of the invention

[0003] In view of the shortcomings of the existing sampler pressure maintaining cylinder sealing technology, the present invention provides a deep-sea fidelity sampler pressure maintaining cylinder lock tongue sealing device, which solves the problems that the existing technology cannot achieve mobile sealing in the deep-sea in-situ environment and the sealing end cover is easy to fall off, thereby achieving the purpose of deep-sea mobile sealing and preventing the sealing end cover from falling off.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: 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 being installed at the bottom of the pressure-maintaining cylinder and sealing it is arranged at the bottom of the main frame, a movable slide rail for moving the sealing mechanism to the bottom of the pressure-maintaining cylinder is also arranged at the bottom of the main frame, the sealing mechanism comprises a lock tongue sealing end cover arranged at the bottom of the pressure-maintaining cylinder and matching it, and a lock tongue fixing hole provided on the inner wall of the bottom of the pressure-maintaining cylinder, a plurality of lock tongue limiting holes distributed in a circumferential array are respectively provided on the lock tongue sealing end cover, a sealing lock tongue is respectively slidably provided on the inner sides of the plurality of lock tongue limiting holes, and one end of the sealing lock tongue is slidably connected to the lock tongue fixing hole, a sealing top cover is detachably provided at the bottom of the lock tongue sealing end cover, and a transmission assembly for synchronously driving the plurality of sealing lock tongues to move is provided on the inner side of the lock tongue sealing end cover.

[0005] As a further optimization scheme of the present invention, the top of the locking tongue sealing end cover is detachably provided with a first sealing O-ring and a second sealing O-ring in sequence, and the first sealing O-ring and the second sealing O-ring both match the inner wall of the bottom of the pressure maintaining cylinder.

[0006] As a further optimization scheme of the present invention, the top of the sealing top cover is respectively provided with a first sealing ring installation groove and a second sealing ring installation groove, and the inner sides of the first sealing ring installation groove and the second sealing ring installation groove are respectively provided with a first sealing ring and a second sealing ring that are in contact with the inner wall of the lock tongue sealing end cover.

[0007] As a further optimization solution of the present invention, a sliding transverse groove is provided at one end of the sealing lock tongue, and a limiting transverse shaft fixed to the lock tongue sealing end cover is slidably provided on the inner side of the sliding transverse groove.

[0008] As a further optimization scheme of the present invention, the transmission assembly includes a lock tongue support plate fixedly mounted on the inner side of the lock tongue sealing end cover, and a plurality of sliding tracks distributed in a circumferential array and fixedly arranged on the lock tongue support plate, and lock tongue sliders are respectively fixedly mounted on the bottoms of a plurality of sealing lock tongues, and a plurality of lock tongue sliders are respectively slidably connected to a plurality of sliding tracks.

[0009] As a further optimization scheme of the present invention, a disc-shaped gear meshing with a plurality of lock tongue sliders is provided at the bottom of the lock tongue support plate, and a bearing fixing block fixed to the lock tongue support plate is rotatably provided at the axis of the disc-shaped gear through a bearing.

[0010] As a further optimization scheme of the present invention, a supporting ring body fixed to the locking tongue sealing end cover is rotatably arranged on the outer side of the bottom of the disc gear, and an outer gear is also fixedly arranged on the bottom of the disc gear, and an inner gear is meshed with the inner side of the outer gear.

[0011] As a further optimization solution of the present invention, a motor slot is provided at the top of the sealing top cover, and a rotating motor whose output shaft is fixed to the axis of the internal gear is provided inside the motor slot.

[0012] By means of the above technical solution, the present invention provides a deep-sea fidelity sampler pressure-maintaining cylinder lock tongue sealing device, which has at least the following beneficial effects: 1. The present invention provides a sealing mechanism to effectively and permanently seal the bottom of the pressure-maintaining cylinder, connects the locking tongue sealing end cover with the bottom of the pressure-maintaining cylinder, and then cooperates with a plurality of sealing locking tongues to clamp the locking tongue sealing end cover to the bottom of the pressure-maintaining cylinder, so that the locking tongue sealing end cover is fixed on the pressure-maintaining cylinder more stably, can effectively and permanently maintain the sealing of the pressure-maintaining cylinder, ensure the pressure inside the pressure-maintaining cylinder, prevent seawater from infiltrating, and extend the service life of the sealing device. At the same time, it ensures that the sample inside the sampler in the deep-sea environment is not affected by the external environment, improves the accuracy of the sampling results, thereby ensuring the authenticity and integrity of the sample. The mobile seal and locking tongue sealing device in the deep-sea in-situ state realizes the fast and convenient deep-sea sealing and the high efficiency of the sealing effect.

[0013] 2. The present invention improves the setting of a transmission assembly to synchronously drive a plurality of sealing lock tongues to move from the lock tongue limiting holes to the lock tongue fixing holes, clamps the lock tongue sealing end cover at the bottom of the pressure maintaining cylinder, and then seals the pressure maintaining cylinder. On the one hand, the convenience of the sealing process of the pressure maintaining cylinder is improved, and rapid locking and releasing can be achieved, thereby reducing the difficulty of manual operation and improving the efficiency and safety of the sampling process. On the other hand, the sealing device with a stable structure can improve the reliability of the pressure maintaining cylinder sealing and provide long-lasting sealing performance.

[0014] 3. The top of the locking tongue sealing end cover of the present invention is provided with a first sealing O-ring and a second sealing O-ring in sequence, and the sealing top cover is provided with a first sealing ring and a second sealing ring respectively, so as to perform multiple sealing on the pressure-maintaining cylinder and the sealing device. Because the pressure in the deep-sea environment is very high, the optimized design is carried out for these extreme environments to ensure the stability of the sealing device during deep-sea operations and the reliability of long-term use, so that it can withstand the challenges of the deep-sea high-pressure environment, maintain a stable sealing effect, and avoid failure under the deep-sea high pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front cross-sectional schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the sealing mechanism of the present invention; Figure 4 is a front cross-sectional view of the sealing mechanism of the present invention; Figure 5 It is a schematic diagram of the exploded structure of the transmission assembly of the present invention; Figure 6 It is a schematic diagram of the hydraulic system of the present invention; Figure 7 The sealing flow chart of the present invention is as follows; In the figure: 1, main 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 horizontal groove; 37, limiting horizontal axis; 38. Transmission assembly; 381. Lock tongue support plate; 382. Sliding track; 383. Lock tongue slider; 384. Disc gear; 385. Bearing fixing block; 386. Support ring body; 387. External gear; 388. Internal gear; 389. Rotating motor; 4. Moving slide rail; 5. First sealing O-ring; 6. Second sealing O-ring; 7. First sealing ring installation groove; 8. Second sealing ring installation groove. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] First embodiment The deep-sea fidelity sampler is a high-precision device used for deep-sea exploration and research. It is specially designed to collect water samples, sediments or biological samples in deep-sea environments while ensuring the original state and authenticity of the samples. Since traditional sealing devices may cause the lock tongue to wear, deform or fail after long-term use in such harsh environments, it is difficult to maintain effectiveness and reliability. In order to effectively and long-term maintain the sealing of the pressure-maintaining cylinder 2, ensure the pressure inside the pressure-maintaining cylinder, prevent seawater from infiltrating, and extend the service life of the sealing device, such as Figure 1 - Figure 5 As shown, this embodiment provides a deep-sea fidelity sampler pressure-maintaining cylinder lock tongue sealing device, which consists of a main frame 1, a pressure-maintaining cylinder 2, a sealing mechanism 3 and a movable slide rail 4. The pressure-maintaining cylinder 2 is installed on one side of the main frame 1. The main frame 1 is a fixed frame and a lifting frame for the sampling and sealing device, which is convenient for equipment transfer; a pressure-maintaining cylinder 2 is installed on one side of the main frame 1, and a sampling cylinder is arranged inside the pressure-maintaining cylinder 2. The pressure-maintaining cylinder 2 mainly cooperates with the sealing device to realize pressure-maintaining storage of samples inside the sampling cylinder, and the entire sealing process is realized by hydraulic means.

[0018] 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-maintaining cylinder 2 is relatively high. Due to the pressure difference between the inside and the outside, the sealing cover is easily caused to fall off, resulting in the problem of failure of the sampling cylinder seal. In order to ensure that the samples inside the sampler are not affected by the external environment in the deep sea environment and to improve the sealing stability of the sampler, a 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-maintaining cylinder 2 and seal it. The sealing mechanism 3 includes 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 opened on the inner wall of the bottom of the pressure-maintaining cylinder 2. The locking tongue sealing end cover 31 is respectively provided with four locking tongue limiting holes 33 distributed in a circumferential array, and the inner sides of the four locking tongue limiting holes 33 are respectively provided with a plurality of locking tongue limiting holes 33. A sealing lock tongue 34 is slidably provided, and one end of the sealing lock tongue 34 is slidably connected to the lock tongue fixing hole 32. The sealing lock tongue 34 moves from the lock tongue limiting hole 33 to the lock tongue fixing hole 32, so that the lock tongue sealing end cover 31 can be clamped at the bottom of the pressure maintaining cylinder 2. A sealing top cover 35 is provided at the bottom of the lock tongue sealing end cover 31. The lock tongue sealing end cover 31 and the sealing top cover 35 are fixedly connected by multiple bolts. A sliding transverse groove 36 is provided 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 provided on the inner side of the sliding transverse groove 36. The sealing lock tongue 34 is sleeved on the outside of one end of the limiting transverse shaft 37 and moves, so that the movement of the sealing lock tongue 34 is more stable, thereby improving the sealing reliability of the sealing lock tongue 34 and providing a long-lasting sealing performance.

[0019] The pressure-maintaining cylinder 2 is driven to move in the vertical direction by an external sealing hydraulic cylinder, and the locking tongue sealing end cover 31 is driven to move in the horizontal direction by an external sealing hydraulic cylinder. Figure 6 As shown, the hydraulic system mainly utilizes hydraulic pressure to drive the sealing of the sampling tube.

[0020] 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 movable slide rail 4 drives the sealing mechanism 3 to move at the bottom of the main frame 1. When the pressure-maintaining cylinder 2 needs to be sealed, the movable slide rail 4 drives the sealing mechanism 3 to move to the bottom of the pressure-maintaining cylinder 2, and then drives the pressure-maintaining cylinder 2 to move downward through the sealing hydraulic cylinder, so that the sealing mechanism 3 matches the bottom of the pressure-maintaining cylinder 2.

[0021] Second embodiment In order to achieve fast locking and releasing, reduce the difficulty of manual operation, and improve the efficiency and safety of the sampling process, such as Figure 4 and Figure 5As shown, in this embodiment, a transmission assembly 38 for synchronously driving the four sealing lock tongues 34 to move is arranged on the inner side of the lock tongue sealing end cover 31, and the transmission assembly 38 includes a lock tongue support plate 381 fixedly mounted on the inner side of the lock tongue sealing end cover 31, and four circumferential array distributed sliding tracks 382 fixedly arranged on the lock tongue support plate 381, and the bottoms of the four sealing lock tongues 34 are respectively fixedly mounted with lock tongue sliders 383, and the four lock tongue sliders 383 are respectively slidably connected with the four sliding tracks 382, ​​and the bottom of the lock tongue support plate 381 is provided with a disc gear 384 meshing with the four lock tongue sliders 383, and the disc gear 384 meshes with the four lock tongue sliders 383. When 84 rotates, it drives the four lock tongue sliders 383 to make linear motion at the same time. A bearing fixing block 385 fixed to the lock tongue support plate 381 is rotatably provided at the axis center of the disc gear 384 through a bearing. A supporting ring body 386 fixed to the lock tongue sealing end cover 31 is rotatably provided at the bottom outer side of the disc gear 384, so that the spiral gear is more stable when rotating. An external gear 387 is also fixedly provided at the bottom of the disc gear 384, and an internal gear 388 is meshedly provided on the inner side of the external gear 387. A motor slot is opened at the top of the sealing top cover 35, and a rotating motor 389 fixed at the axis center of the output shaft and the internal gear 388 is provided on the inner side of the motor slot.

[0022] When the sealing top cover 35 is fixed to the bottom of the locking tongue sealing end cover 31, the motor slot of the sealing top cover 35 just matches 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.

[0023] Third embodiment In order to cope with the high-pressure environment of the deep sea, multiple seals are performed on the pressure-maintaining cylinder 2 and the sealing device to ensure the stability of the sealing device during deep-sea operations and the reliability of long-term use, and to maintain a stable sealing effect, such as Figure 4-Figure 7 As shown, in this embodiment, 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 in sequence, and the first sealing O-ring 5 and the second sealing O-ring 6 are matched with the inner wall of the bottom of the pressure maintaining cylinder 2. The locking tongue sealing end cover 31 and the bottom of the pressure maintaining cylinder 2 are sealed by the first sealing O-ring 5 and the second sealing O-ring 6, which can improve the reliability of the sealing of the pressure maintaining cylinder 2, provide long-lasting sealing performance, and avoid failure under deep-sea high pressure.

[0024] A first-layer sealing ring installation groove 7 and a second-layer sealing ring installation groove 8 are respectively provided on the top of the sealing top cover 35, and a first sealing ring and a second sealing ring in contact with the inner wall of the locking tongue sealing end cover 31 are respectively provided on the inner sides of the first-layer sealing ring installation groove 7 and the second-layer sealing ring installation groove 8. The cross-section of the sealing top cover 35 is arranged in a "convex" shape, the first-layer sealing ring installation groove 7 is located on the vertical wall at the top of the sealing top cover 35, and the second-layer sealing ring installation groove 8 is located on the top plane of the sealing top cover 35, thereby improving the sealing performance of the entire locking tongue sealing end cover 31.

[0025] The present invention connects the locking tongue sealing end cover 31 of the sealing mechanism 3 with the bottom of the pressure-maintaining cylinder 2, and then cooperates with a plurality of sealing locking tongues 34 to clamp the locking tongue sealing end cover 31 to the bottom of the pressure-maintaining cylinder 2. This can effectively and long-term maintain the sealing 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 in the deep-sea environment are not affected by the external environment, thereby improving the accuracy of the sampling results.

[0026] In actual use of the sealing device, the entire sealing mechanism 3 is driven to move to the bottom of the pressure-maintaining cylinder 2 by moving the slide rail 4, and then the pressure-maintaining cylinder 2 is driven 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, and the first sealing O-ring 5 and the second sealing O-ring 6 are respectively fitted to the inner wall of the bottom of the pressure-maintaining cylinder 2, and then the rotating motor 389 is started, and the output shaft of the rotating motor 389 drives the internal gear 388 to rotate, and the internal gear 388 drives the external gear meshing with it. The wheel 387 rotates, and the external gear 387 drives the disc gear 384 on its top to rotate. The disc gear 384 drives the four lock tongue sliders 383 to slide at the same time. The lock tongue sliders 383 move on the corresponding sliding tracks 382. The lock tongue sliders 383 drive the sealing lock tongue 34 on its top to slide inside the lock tongue limiting hole 33. One end of the sealing lock tongue 34 enters the lock tongue fixing hole 32, and the lock tongue sealing end cover 31 is clamped on the bottom of the pressure maintaining cylinder 2, which can effectively and long-term maintain the sealing of the pressure maintaining cylinder 2.

[0027] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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).

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: 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 arranged 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 slide blocks (383), and the plurality of lock tongue slide blocks (383) are respectively slidably connected to the plurality of sliding tracks (382).

6. A deep sea fidelity sampler pressure-maintaining cylinder lock tongue sealing device according to claim 5, characterized in that: A disc-shaped gear (384) meshing with a plurality of locking tongue sliders (383) is disposed at the bottom of the locking tongue support plate (381), and a bearing fixing block (385) rotatably fixed to the locking tongue support plate (381) is disposed at the axis of the disc-shaped gear (384) via a bearing.

7. A deep sea fidelity sampler pressure-maintaining cylinder lock tongue sealing device according to claim 6, characterized in that: A supporting ring body (386) fixed to the locking tongue sealing end cover (31) is rotatably provided on the outer side of the bottom of the disc-shaped gear (384), and an outer gear (387) is also fixedly provided on the bottom of the disc-shaped gear (384), and an inner gear (388) is meshedly provided on the inner side of the outer gear (387).

8. A deep sea fidelity sampler pressure-maintaining cylinder lock tongue sealing device according to claim 7, 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).

Images