Underwater hydraulic compensator

Abstract

The utility model discloses an underwater hydraulic compensator which comprises an upper installation base, an upper cover plate is arranged at the bottom of the upper installation base, a leather bag is arranged at the bottom of the upper cover plate, a lower cover plate is arranged at the bottom of the leather bag, a lower installation base is fixedly arranged at the bottom of the lower cover plate, and a plurality of sets of spring sleeves are arranged between the upper cover plate and the upper installation base. The spring sleeve extends downwards to the lower portion of the leather bag, the overall height of the compensator is greatly reduced, the compensator is more compact, the spatial layout of the compensator is optimized, the difficulty and cost of the compensator in the transportation and installation process can be reduced, meanwhile, a proper gap is formed between the spring sleeve and the spring mandrel, and therefore the compensator is more compact. When the leather bag stretches out and draws back, the guiding function is achieved, it is ensured that the leather bag moves along a correct track in the stretching-out and drawing-back process, the compensator is not prone to being clamped when used, and therefore the space of the compensator in a narrow space is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compensators, in particular to an underwater hydraulic compensator. Background Art

[0002] With the increase of ocean exploration and development activities, underwater equipment such as submersibles play an increasingly important role in deep-sea operations. However, as the water depth increases, the environmental pressure continues to increase, which poses a severe challenge to the hydraulic system of underwater equipment. In order to meet this challenge, underwater hydraulic compensators came into being. The main function of underwater hydraulic compensators is to ensure that the hydraulic pressure of submersibles such as ROVs is greater than the external water pressure, prevent seawater backflow, and ensure the safe and stable operation of the system. The existing underwater hydraulic compensators can basically meet the daily use needs, but there are still some shortcomings that need to be improved.

[0003] However, due to the design structure, the existing underwater hydraulic compensators often have a large overall height, which not only increases the size and weight of the equipment, but also limits the operational flexibility of the equipment in a small space. At the same time, the underwater hydraulic compensator is prone to jamming during the expansion and contraction of the bladder, which seriously affects the stability and reliability of the equipment. Therefore, we propose an underwater hydraulic compensator to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an underwater hydraulic compensator to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an underwater hydraulic compensator, comprising an upper mounting seat, an upper cover plate is provided at the bottom of the upper mounting seat, a bladder is provided at the bottom of the upper cover plate, a lower cover plate is provided at the bottom of the bladder, a lower mounting seat is fixedly provided at the bottom of the lower cover plate, a plurality of groups of spring sleeves are provided between the upper cover plate and the upper mounting seat, spring core shafts are all sleeved on the spring sleeves, the bottom ends of the spring core shafts are all fixed on the lower mounting seat, springs are all wound on the surfaces of the spring core shafts in the spring sleeves, an oil inlet is provided at the top of the upper cover plate, the oil inlet is connected to the bladder, an oil outlet is provided at the bottom of the bladder, and the top of the oil inlet is connected to an oil pipeline through a flange.

[0006] As a further preferred embodiment of the present technical solution, two groups of fixing seats are symmetrically arranged on the outer wall of the oil inlet, a rotating rod is rotated inside the fixing seat, a plurality of torsion springs are wound around the surface of the rotating rod, a threaded rod is arranged on the top surface of the rotating rod, a nut is threadedly connected to the threaded rod, a mounting plate is arranged on the outer wall of the oil pipeline above the fixing seat, the mounting plate is rotatably connected to the threaded rod, and a limiting groove is provided on the surface of the mounting plate corresponding to the bottom surface of the nut.

[0007] As a further preferred embodiment of the present technical solution, two groups of spring sleeves are symmetrically arranged on the upper mounting seats on both sides of the bladder, and the inner walls of the spring sleeves are tightly fitted to the surface of the spring core shaft.

[0008] As a further preferred embodiment of the present technical solution, the outer wall of the spring is in contact with the inner wall of the spring sleeve, and the inner wall of the spring is in contact with the surface of the spring core shaft.

[0009] As a further preferred embodiment of the present technical solution, a sealing ring is built into the surface of the oil inlet facing the oil pipeline, and the oil inlet is tightly fitted to the surface of the oil pipeline through the sealing ring.

[0010] As a further preferred embodiment of the present technical solution, two groups of torsion springs are provided, and the two groups of torsion springs are respectively wound and provided on the surfaces of both ends of the rotating rod.

[0011] As a further preferred embodiment of the present technical solution, the outer wall of the nut is provided with anti-slip patterns, and the surface of the nut on one side facing the limiting groove is provided with a rubber ring.

[0012] The utility model provides an underwater hydraulic compensator, which has the following beneficial effects:

[0013] 1. The utility model utilizes the spring sleeve to extend under the bladder, which greatly reduces the overall height of the compensator, makes it more compact, and helps to optimize the spatial layout of the compensator. It can also reduce the difficulty and cost of the compensator during transportation and installation. At the same time, a suitable gap is set between the spring sleeve and the spring core shaft, which plays a guiding role when the bladder is extended and retracted, ensuring that the bladder moves along the correct trajectory during the extension and retraction process, and makes the compensator less likely to get stuck during use, thereby improving the compensator in a small space.

[0014] 2. The utility model achieves the purpose of positioning the threaded hole on the oil inlet and the oil pipe by rotating the threaded rod into the mounting plate, and then rotating the nut on the threaded rod so that the nut is rotated into the limit groove, and the mounting plate is squeezed to make the oil pipe fit the oil inlet, thereby facilitating the staff to quickly install the oil pipe and the oil inlet and effectively reducing the installation error of the oil pipe and the oil inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0017] Figure 3 It is a schematic diagram of the first three-dimensional cross-sectional structure of the utility model;

[0018] Figure 4It is a second three-dimensional cross-sectional structural schematic diagram of the utility model;

[0019] Figure 5 For the utility model Figure 3 A schematic diagram of the enlarged structure at point A;

[0020] Figure 6 For the utility model Figure 4 Schematic diagram of the enlarged structure at B.

[0021] In the figure: 1. upper mounting seat; 2. upper cover plate; 3. bladder; 4. lower cover plate; 5. lower mounting seat; 6. spring sleeve; 7. spring core shaft; 8. spring; 9. oil inlet; 10. oil outlet; 11. oil pipeline; 12. fixing seat; 13. rotating rod; 14. torsion spring; 15. threaded rod; 16. nut; 17. mounting plate; 18. limit groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The utility model provides a technical solution: Figures 1 to 6 As shown, in this embodiment, an underwater hydraulic compensator includes an upper mounting seat 1, an upper cover plate 2 is provided at the bottom of the upper mounting seat 1, a bladder 3 is provided at the bottom of the upper cover plate 2, a lower cover plate 4 is provided at the bottom of the bladder 3, a lower mounting seat 5 is fixedly provided at the bottom of the lower cover plate 4, a plurality of groups of spring sleeves 6 are provided between the upper cover plate 2 and the upper mounting seat 1, spring core shafts 7 are all sleeved on the spring sleeves 6, the bottom ends of the spring core shafts 7 are all fixed on the lower mounting seat 5, springs 8 are wound on the surfaces of the spring core shafts 7 in the spring sleeves 6, an oil inlet 9 is provided at the top of the upper cover plate 2, the oil inlet 9 is connected to the bladder 3, an oil outlet 10 is provided at the bottom of the bladder 3, and an oil pipeline 11 is connected to the top of the oil inlet 9 through a flange.

[0024] By using the spring sleeve 6 to extend under the bladder 3, the overall height of the compensator is greatly reduced, making it more compact, and helping to optimize the spatial layout of the compensator. It can also reduce the difficulty and cost of the compensator during transportation and installation. At the same time, a suitable gap is set between the spring sleeve 6 and the spring core shaft 7 to guide the bladder 3 when it is extended and retracted, ensuring that the bladder 3 moves along the correct trajectory during the extension and retraction process, and making the compensator less likely to get stuck during use, thereby improving the compensator in a small space.

[0025] In other embodiments, two sets of fixing seats 12 are symmetrically arranged on the outer wall of the oil inlet 9, a rotating rod 13 is rotated in each fixing seat 12, and multiple sets of torsion springs 14 are wound around the surface of the rotating rod 13, and a threaded rod 15 is arranged on the top surface of the rotating rod 13, and a nut 16 is threadedly connected to the threaded rod 15, and a mounting plate 17 is arranged on the outer wall of the oil delivery pipe 11 above the fixing seat 12, and the mounting plate 17 is rotatably connected to the threaded rod 15, and a limiting groove 18 is arranged on the surface of the mounting plate 17 corresponding to the bottom surface of the nut 16;

[0026] By rotating the threaded rod 15 into the mounting plate 17, and then threading the nut 16 on the threaded rod 15, the nut 16 is rotated into the limiting groove 18, and the mounting plate 17 is squeezed to make the oil pipe 11 fit with the oil inlet 9, thereby achieving the purpose of positioning the oil inlet 9 and the threaded holes on the oil pipe 11, so that the staff can quickly install the oil pipe 11 and the oil inlet 9, and effectively reduce the installation error of the oil pipe 11 and the oil inlet 9.

[0027] In other embodiments, two sets of spring sleeves 6 are symmetrically arranged on the upper mounting seats 1 on both sides of the bladder 3, and the inner wall of the spring sleeve 6 is tightly fitted with the surface of the spring core shaft 7;

[0028] Through this design, multiple groups of spring sleeves 6 and spring core shafts 7 can work simultaneously, making the compensator more stable in structure. Even if one group of spring sleeves 6 or spring core shafts 7 fails or wears out, other groups of spring sleeves 6 and spring core shafts 7 can still continue to work, thereby maintaining the stability and reliability of the entire compensator.

[0029] In other embodiments, the outer wall of the spring 8 fits with the inner wall of the spring sleeve 6, and the inner wall of the spring 8 fits with the surface of the spring core shaft 7;

[0030] This design can prevent the spring 8 from loosening or shifting during operation, so that the spring 8 maintains stable contact and transmission during the expansion and contraction process, thereby ensuring the accuracy and reliability of the compensation effect.

[0031] In other embodiments, a sealing ring is built into the surface of the oil inlet 9 facing the oil delivery pipe 11, and the oil inlet 9 is tightly fitted with the surface of the oil delivery pipe 11 through the sealing ring;

[0032] This design can increase the sealing performance of the connection between the oil inlet 9 and the oil pipeline 11 and prevent leakage. At the same time, the sealer can ensure that the liquid in the oil pipeline 11 is fully utilized, reduce waste, and improve energy efficiency.

[0033] In other embodiments, two groups of torsion springs 14 are provided, and the two groups of torsion springs 14 are respectively wound and provided on the surfaces of both ends of the rotating rod 13;

[0034] Through this design, the restoring forces of the two sets of torsion springs 14 can act on both ends of the rotating rod 13 at the same time, and drive the rotating rod 13 to return and rotate in the fixing seat 12, thereby ensuring that the rotating rod 13 is subjected to uniform force, and it is not easy for one end of the rotating rod 13 to be subjected to excessive force, resulting in the rotating rod 13 being stuck in the fixing seat 12 and unable to rotate.

[0035] In other embodiments, the outer wall of the nut 16 is provided with anti-slip textures, and the surface of the nut 16 facing the limiting groove 18 is provided with a rubber ring;

[0036] This design can increase the friction between the worker's hand and the nut 16, thereby preventing the hand from slipping when turning the nut 16. It can also prevent the nut 16 from causing friction damage to the inner wall of the limiting groove 18 when it is rotated into the limiting groove 18.

[0037] The utility model provides an underwater hydraulic compensator, the specific working principle of which is as follows:

[0038] When in use, first inject oil into the bladder 3 through the oil inlet 9, and then make the spring 8 compress the bladder 3. The compensator is used in seawater to balance the seawater pressure, so that the oil-filled shell does not need to consider the strength problem caused by the depth of seawater, greatly reduces the shell thickness, reduces the shell weight, and the compensator can provide a micro-positive pressure oil. Even if there is a leakage, seawater will not immediately invade the oil system.

[0039] 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. An underwater hydraulic compensator, comprising an upper mounting seat (1), characterized in that: An upper cover plate (2) is provided at the bottom of the upper mounting seat (1), a bladder (3) is provided at the bottom of the upper cover plate (2), a lower cover plate (4) is provided at the bottom of the bladder (3), a lower mounting seat (5) is fixedly provided at the bottom of the lower cover plate (4), a plurality of groups of spring sleeves (6) are provided between the upper cover plate (2) and the upper mounting seat (1), a spring core shaft (7) is sleeved on each of the spring sleeves (6), the bottom ends of the spring core shafts (7) are fixed on the lower mounting seat (5), a spring (8) is wound around the surface of the spring core shaft (7) in the spring sleeve (6), an oil inlet (9) is provided at the top of the upper cover plate (2), the oil inlet (9) is connected to the bladder (3), an oil outlet (10) is provided at the bottom of the bladder (3), and the top of the oil inlet (9) is connected to an oil delivery pipe (11) via a flange.

2. An underwater hydraulic compensator according to claim 1, characterized in that: Two groups of fixed seats (12) are symmetrically arranged on the outer wall of the oil inlet (9), a rotating rod (13) is rotatably arranged inside each of the fixed seats (12), a plurality of groups of torsion springs (14) are wound around the surface of each of the rotating rods (13), a threaded rod (15) is arranged on the top surface of each of the rotating rods (13), a nut (16) is threadedly connected to each of the threaded rods (15), a mounting plate (17) is arranged on the outer wall of the oil delivery pipe (11) above the fixed seat (12), the mounting plate (17) is rotatably connected to the threaded rod (15), and a limiting groove (18) is arranged on the surface of the mounting plate (17) corresponding to the bottom surface of the nut (16).

3. The underwater hydraulic compensator according to claim 1, characterized in that: Two groups of spring sleeves (6) are symmetrically arranged on the upper mounting seats (1) on both sides of the leather bag (3), and the inner walls of the spring sleeves (6) are tightly fitted to the surface of the spring core shaft (7).

4. The underwater hydraulic compensator according to claim 1, characterized in that: The outer wall of the spring (8) fits with the inner wall of the spring sleeve (6), and the inner wall of the spring (8) fits with the surface of the spring core shaft (7).

5. The underwater hydraulic compensator according to claim 1, characterized in that: A sealing ring is built into the surface of the oil inlet (9) on one side facing the oil delivery pipe (11), and the oil inlet (9) is tightly fitted to the surface of the oil delivery pipe (11) via the sealing ring.

6. An underwater hydraulic compensator according to claim 2, characterized in that: Two groups of torsion springs (14) are provided, and the two groups of torsion springs (14) are respectively wound and arranged on the surfaces of both ends of the rotating rod (13).

7. An underwater hydraulic compensator according to claim 2, characterized in that: The outer wall of the nut (16) is provided with anti-slip patterns, and a rubber ring is provided on the surface of the nut (16) on one side facing the limiting groove (18).

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