CN214824014U - Rigid outer oil bag structure and piston type buoyancy adjusting device - Google Patents

Abstract

The utility model provides a rigid outer oil bag structure and a piston type buoyancy adjusting device, which belong to the field of buoyancy adjusters, wherein the rigid outer oil bag structure is formed by encircling a watertight pressure-resistant cabin cylinder and a buoyancy adjusting piston, a telescopic flexible oil bag is arranged in the rigid outer oil bag structure, the telescopic flexible oil bag is of a structure with an open end and a closed end, the open end of the telescopic flexible oil bag is fixed at the end part of the watertight pressure-resistant cabin cylinder, and the closed end is fixed with the buoyancy adjusting piston; and hydraulic oil is filled between the telescopic flexible oil bag and the inner wall of the watertight pressure-resistant cabin cylinder body to balance the internal pressure and the external pressure. The utility model discloses set up telescopic flexible oil pocket in the outer oil pocket structure of rigidity, can prevent that the withstand voltage cabin barrel inner wall of the watertight of the outer oil pocket of rigidity is direct to be contacted with the environmental water and takes place to corrode, avoid it by the foreign matter fish tail, prevent that the inner wall from producing biology and adhere to, and then guaranteed the reliability of buoyancy adjusting device work, greatly increased buoyancy adjusting device's working life.

Description

Rigid outer oil bag structure and piston type buoyancy adjusting device

Technical Field

The utility model belongs to the buoyancy regulator field, concretely relates to outer oil bag structure of rigidity, in addition, the utility model discloses still relate to a piston buoyancy regulating device including the outer oil bag structure of above-mentioned rigidity.

Background

The piston type buoyancy adjusting device has a plurality of advantages in terms of buoyancy adjusting control precision and controllability, but in the process of implementing the invention, the inventor finds that the prior piston type buoyancy adjusting device has the following defects:

1. the inner wall of the hydraulic cylinder body of the rigid outer oil bag and the buoyancy adjusting piston which form the piston type buoyancy adjusting device are directly contacted with the environmental water body, and the inner wall of the hydraulic cylinder body of the rigid outer oil bag and the buoyancy adjusting piston are easy to corrode in the long-time underwater working process, so that the dynamic sealing matching between the inner wall of the hydraulic cylinder body of the rigid outer oil bag and the buoyancy adjusting piston is failed, the environmental water body is infiltrated, and the buoyancy adjusting function is failed and related dangers are caused;

2. during the reciprocating motion process of the buoyancy adjusting piston in the hydraulic cylinder body of the rigid outer oil bag, as no relevant pollution prevention exists, the buoyancy adjusting piston is easy to be invaded by foreign matters, hard foreign matters scratch the inner wall of the buoyancy adjusting hydraulic cylinder body, and thus the dynamic seal of the buoyancy adjuster is damaged;

3. the buoyancy adjusting piston and the inner wall of the hydraulic cylinder body of the rigid outer oil bag are directly contacted with the environmental water body, and organism adhesion is easily generated on the surface of the inner wall of the hydraulic cylinder body of the rigid outer oil bag, particularly the marine environment, for long-term underwater environment work, particularly long-term low-frequency work, even long-term silent standby state, so that the dynamic seal of the buoyancy adjuster is damaged.

SUMMERY OF THE UTILITY MODEL

Based on the background problem, the utility model aims at providing a rigid outer oil bag structure, wherein a telescopic flexible oil bag is arranged in the rigid outer oil bag structure, so that the inner wall of the hydraulic cylinder body of the rigid outer oil bag can be prevented from being corroded, scratched by foreign matters and bio-adhesion to the inner wall can be avoided, and the reliability of the work is further ensured; another object of the present invention is to provide a piston type buoyancy adjusting device comprising the rigid outer oil bag structure.

In order to achieve the above object, on the one hand, the embodiment of the present invention provides a technical solution:

the rigid outer oil bag structure is formed by encircling a watertight pressure-resistant cabin cylinder and a buoyancy adjusting piston, a telescopic flexible oil bag is arranged in the rigid outer oil bag structure, the telescopic flexible oil bag is of a structure with an open end and a closed end, the open end of the telescopic flexible oil bag is fixed at the end part of the watertight pressure-resistant cabin cylinder, and the closed end of the telescopic flexible oil bag is fixed with the buoyancy adjusting piston.

In one embodiment, hydraulic oil is filled between the telescopic flexible oil bag and the inner wall of the watertight pressure-resistant cabin cylinder.

In one embodiment, the telescopic flexible oil bag is of a bellows structure.

In one embodiment, the telescopic flexible oil bag is made of rubber.

In one embodiment, the end part of the watertight pressure-resistant cabin cylinder extends outwards horizontally to form an annular fixing part, and the open end of the telescopic flexible oil sac is fixed on the annular fixing part.

Preferably, an inner pressing ring is fixed on the inner side of the opening end of the telescopic flexible oil bag, and the inner pressing ring is fixed on the annular fixing part.

More preferably, an outer pressing ring is pressed outside the open end of the telescopic flexible oil bag.

In one embodiment, the inner pressing ring and the outer pressing ring are made of metal.

Preferably, the surface of the annular fixing part is provided with an annular groove, and an isolation sealing ring is arranged in the annular groove.

On the other hand, the embodiment of the utility model provides a piston buoyancy adjusting device, including foretell rigidity outer oil pocket structure.

Compared with the prior art, the embodiment of the utility model provides a have following effect at least:

1. the utility model discloses a be equipped with telescopic flexible oil pocket in the outer oil pocket structure of rigidity, the tip at the withstand voltage cabin barrel of watertight is fixed to the open end of telescopic flexible oil pocket, and the blind end is fixed with the buoyancy regulating piston, and the inner wall of the withstand voltage cabin barrel of watertight of the outer oil pocket of rigidity can not contact with the environmental water body like this to the emergence corrosion has been avoided.

2. The utility model discloses a set up telescopic flexible oil pocket and can prevent that rigid foreign matters such as metal granule, gravel, screw from soaking the clearance between the inner wall of the withstand voltage cabin barrel of the watertight of the outer oil pocket structure of rigidity and the buoyancy regulating piston to the hydraulic cylinder inner wall of having avoided the outer oil pocket structure of rigidity is by the fish tail, has increased piston buoyancy regulating device's antipollution performance.

3. The utility model discloses a set up telescopic flexible oil pocket and can effectively prevent piston buoyancy adjusting device and in the biological attached pollution that long-time work brought under water, especially to the long-time work of marine environment, especially need be in the biological attached that the static standby state must produce under water for a long time, and then improve the reliability of the long-time work of piston buoyancy adjusting device.

4. The utility model discloses a packing has hydraulic oil between the resistant cabin barrel of telescopic flexible oil pocket and watertight, and balanced internal and external pressure can effectively improve the sealing performance of buoyancy regulating piston, has reduced the frictional force of buoyancy regulating piston motion simultaneously again, has guaranteed the life of telescopic flexible oil pocket, has also strengthened the reliability of piston buoyancy adjusting device work.

5. The utility model discloses the tip level at the withstand voltage cabin barrel of watertight extends has annular fixed part, is equipped with the isolation sealing washer in the ring channel of annular fixed part, can prevent to fill the hydraulic oil in the clearance and outwards leak.

6. The utility model discloses an interior clamping ring is fixed telescopic flexible oil pocket with outer clamping ring to further compression through outer clamping ring guarantees the leakproofness.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below.

Fig. 1 is a schematic view of the structure of a rigid outer oil bag in embodiment 1 of the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate the orientation or positional relationship based on the use state of the product, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Example 1

The rigid outer oil bag structure is formed by surrounding a watertight pressure-resistant cabin cylinder body 1 and a buoyancy adjusting piston 2 as shown in figure 1, and a telescopic flexible oil bag 3 is arranged in the rigid outer oil bag structure.

In this embodiment, as shown in fig. 1, the top end of the telescopic flexible oil bag 3 is open, the bottom end is closed, the open end of the telescopic flexible oil bag 3 is fixed at the top end of the watertight pressure-resistant tank barrel 1, and the closed end is fixed with the buoyancy adjusting piston 2, so that when the buoyancy adjusting piston 2 moves up and down, the telescopic flexible oil bag 3 can be driven to contract and extend.

The telescopic flexible oil bag 3 in this embodiment may be a rubber bellows structure, and the material thereof is not limited to rubber.

In order to fix the open end of the telescopic flexible oil bag 3, the present embodiment is provided with a ring-shaped fixing part 101 extending horizontally outwards from the top end of the watertight pressure-resistant tank body 1, and the open end of the telescopic flexible oil bag 3 is fixed on the ring-shaped fixing part 101 in an adhering manner.

Because the telescopic flexible oil bag 3 is of a flexible structure, the sealing performance cannot be guaranteed during the fixing process, for this reason, as shown in fig. 2, in the present embodiment, an inner pressing ring 301 is fixed on the inner side (i.e., the lower surface in fig. 2) of the open end of the telescopic flexible oil bag 3, the inner pressing ring 301 is fixed on the annular fixing portion 101, an outer pressing ring 302 is further pressed on the outer side (i.e., the upper surface in fig. 2) of the open end of the telescopic flexible oil bag 3, and the arrangement of the outer pressing ring 302 can be further sealed by compression.

In this embodiment, the inner pressure ring 301 and the outer pressure ring 302 may be made of a corrosion-resistant metal material, and the specific material is not limited in this embodiment.

In order to further ensure the sealing performance, as shown in fig. 2, an annular groove 102 is formed on the surface of the annular fixing portion 101, and a separation sealing ring 103 is disposed in the annular groove 102 to prevent leakage of hydraulic oil, which will be described later.

In order to balance the gap problem caused by the introduction of the telescopic flexible oil bag 3, as shown in fig. 1 and 2, in the embodiment, hydraulic oil 100 is filled between the telescopic flexible oil bag 3 and the inner wall of the watertight pressure-resistant cabin barrel 1, which not only can reduce friction, but also can ensure the service life of the telescopic flexible oil bag 3.

The working principle of the rigid outer oil bag structure of the embodiment is as follows:

when the buoyancy needs to be increased, the buoyancy adjusting piston 2 moves upwards, the telescopic flexible oil bag 3 contracts upwards, the buoyancy adjusting piston 2 pushes the environmental water body 200 to drain outwards through the telescopic flexible oil bag 3, the drainage volume of the buoyancy adjusting device is increased, and the buoyancy of the system is increased; the pressure of the hydraulic oil 100 sealed in the clearance formed by the telescopic flexible oil bag 3, the buoyancy adjusting piston 2 and the watertight pressure-resistant cabin cylinder 1 is the same as that of the environmental water body 200.

When the buoyancy is required to be reduced, the buoyancy adjusting piston 2 moves downwards to drive the telescopic flexible oil bag 3 to extend, the environmental water body 200 enters the telescopic flexible oil bag 2, and the buoyancy of the system is reduced.

The volume of the hydraulic oil 100 is kept unchanged all the time in the whole buoyancy adjusting process, the hydraulic oil only plays roles of lubricating and balancing internal and external pressure, the telescopic change of the telescopic flexible oil bag 3 is not influenced by the pressure change of the environmental water body 200, and the phenomenon that the service life is influenced by the excessive tensile deformation of the telescopic flexible oil bag is avoided.

The utility model discloses the core lies in introducing telescopic flexible oil pocket 3 and filling hydraulic oil 100, and its purpose is solved the problem that the sealing reliability that environmental water 200 and motion seal part's direct contact lead to reduces, and the design of balanced pressure formula has reduced the complicated structural design that the system goes on because of the pressure that environmental water 200 was overcome to the needs, does not change other structures of piston buoyancy adjustment device simultaneously again.

Example 2

The piston type buoyancy adjusting device comprises an inner oil bag and the rigid outer oil bag structure and the inner oil bag structure in the embodiment 1, which are the prior art, and the embodiment is not described too much.

It should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. The rigid outer oil bag structure is formed by enclosing a watertight pressure-resistant cabin cylinder and a buoyancy adjusting piston and is characterized in that,

the rigid outer oil bag structure is internally provided with a telescopic flexible oil bag which is of a structure with an open end and a closed end, the open end of the telescopic flexible oil bag is fixed at the end part of the watertight pressure-resistant cabin cylinder, and the closed end is fixed with the buoyancy adjusting piston.

2. The rigid outer oil bag structure according to claim 1, wherein hydraulic oil is filled between the telescopic flexible oil bag and the inner wall of the watertight pressure-resistant tank cylinder.

3. The rigid outer oil bladder structure of claim 1, wherein the telescoping flexible oil bladder is a bellows structure.

4. The rigid outer oil bag structure according to claim 1, wherein the flexible telescopic oil bag is made of rubber.

5. The rigid outer oil bladder structure of claim 1, wherein the end of the watertight pressure resistant tank cylinder extends horizontally outward with an annular fixing portion, and the open end of the telescopic flexible oil bladder is fixed on the annular fixing portion.

6. The rigid outer oil bag structure according to claim 5, wherein an inner pressing ring is fixed to the inside of the open end of the telescopic flexible oil bag, and the inner pressing ring is fixed to the annular fixing portion.

7. The rigid outer oil bag structure according to claim 6, wherein an outer pressing ring is pressed outside the open end of the telescopic flexible oil bag.

8. The rigid outer oil sac structure according to claim 7, wherein the inner pressing ring and the outer pressing ring are made of metal.

9. The rigid outer oil bag structure according to claim 5, wherein the surface of the annular fixing portion is provided with an annular groove, and an isolation seal ring is arranged in the annular groove.

10. A piston buoyancy regulating device comprising a rigid outer oil bladder structure as claimed in any one of claims 1 to 9.

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