CN216861785U - External pressure balancing device suitable for underwater hydraulic system - Google Patents
External pressure balancing device suitable for underwater hydraulic system Download PDFInfo
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- CN216861785U CN216861785U CN202220654356.7U CN202220654356U CN216861785U CN 216861785 U CN216861785 U CN 216861785U CN 202220654356 U CN202220654356 U CN 202220654356U CN 216861785 U CN216861785 U CN 216861785U
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Abstract
The utility model discloses an external pressure balancing device suitable for an underwater hydraulic system, which comprises a base, a lower pressing cover, a leather bag, an upper pressing cover assembly, a protective cover, a compression spring and a top cover, wherein a lip edge at the bottom of the leather bag is embedded between the base and the lower pressing cover, a lip edge at the upper part of the leather bag is embedded into the upper pressing cover assembly, the compression spring is sleeved between a limiting core pipe of the top cover and a limiting core pipe of the upper pressing cover assembly, and the protective cover is respectively connected with the base and the top cover through flanges. The compression spring presses the leather bag to pre-pressurize the oil filled inside, and the hydraulic pump can smoothly suck the oil through the formed positive pressure, so that the normal operation of a hydraulic system is guaranteed; the leather bag can be ensured to be in a safe state through the protective cover and the base which are made of stainless steel materials, and meanwhile, the leather bag cannot be damaged by the outside in the long-term use process; the longitudinal hole of the shield is convenient for observation, and the oil injection amount of the leather bag can be intuitively controlled; this patent leakproofness is good, can use under the environment that hydraulic pressure or take oil liquid to need the compensation under water, has good reliability and economic nature.
Description
Technical Field
The utility model relates to the technical field of underwater tools, in particular to an external pressure balancing device suitable for an underwater hydraulic system.
Background
The pressure difference compensation of the underwater hydraulic system is always difficult for the use of underwater hydraulic equipment, and along with the increase of the underwater operation depth of the equipment, the influence of external water pressure of the equipment is more and more obvious, and the influence on the external water pressure is required to be eliminated to realize the balance of internal and external pressures. For underwater hydraulic equipment, the oil tank is required to have a certain positive pressure all the time, so that the oil pump cannot absorb oil difficultly and further cause air suction damage. Therefore, the oil tank of the hydraulic system is required to be capable of always keeping a certain pre-pressure according to the change of the depth of underwater operation water so as to achieve the purpose that the internal pressure is slightly greater than the external pressure so that the oil pump can suck oil and prevent external seawater from entering the hydraulic system. At present, the conventional underwater equipment adopts an energy accumulator structure, seawater is not easy to discharge from a top hole after entering, foreign matters such as silt and the like are easy to remain in the seawater and sea creatures are bred to cause puncture in a leather bag, so that the equipment is easy to fail too early; if adopt the film bag form compensator of import, because the leather bag is that the lip turns over the use, the bending part can be because of folding the fracture many times after the definite time, simultaneously because the structure use is transparent plastic processing, receives external force striking and very easily damages, need install solitary safety cover externally additional, the overall structure is more complicated, and the maintenance is loaded down with trivial details.
SUMMERY OF THE UTILITY MODEL
In order to make up the defects of the prior art, the utility model provides an external pressure balancing device suitable for an underwater hydraulic system.
The utility model is realized by the following technical scheme:
an external pressure balancing device suitable for underwater hydraulic systems, comprising: a base, a lower gland, a leather bag, an upper gland component, a protective cover, a compression spring and a top cover,
the base is formed by welding stainless steel of which the upper end and the lower end are provided with connecting flanges and the middle part is provided with a supporting upright post, the inner ring of the upper end flange of the base is annularly provided with a flange hole meeting the connection with the lower gland, the outer ring of the upper end flange of the base is annularly provided with a flange hole meeting the connection with the shield,
the lower gland is a flange metal disc with a round boss at the upper part and a connecting bolt at the lower part, the lip edge at the bottom of the leather bag is embedded between the lower gland and the base, the lower gland is tightly connected with the upper end flange of the base through the connecting bolt, the middle part of the lower gland is provided with a threaded through hole which is connected with an external oil pipe,
the upper gland component is a flange assembly consisting of two flanges, the lower flange of the upper gland component is integrally embedded into the lip edge of the upper part of the leather bag, the lower flange of the upper gland component is fixedly connected with the upper flange of the upper gland component through a connecting bolt, a pressure ring is arranged on the upper flange of the upper gland component, a lower limiting core pipe is arranged on the pressure ring through an annular groove formed in the inner ring,
the protective cover is a cylindrical structural member which is made of stainless steel, the two ends of the cylindrical structural member are provided with connecting flanges, the middle of the cylindrical structural member is provided with a cylinder body, a plurality of groups of long holes are longitudinally and uniformly distributed on the cylinder body of the protective cover, the lower connecting flange of the protective cover is connected with the upper end flange of the base, the upper connecting flange of the protective cover is connected with the top cover flange,
the top cover is a flange plate structural member made of stainless steel, a lifting lug is welded at the upper end of the top cover, an upper limiting core pipe meeting the installation requirement of a compression spring is arranged in the middle of the lower end of the top cover,
the compression spring which is concentrically arranged with the cylinder body of the protective cover is sleeved between the upper limiting core tube and the lower limiting core tube, and the compression spring is a spring processed by stainless steel.
Preferably, the leather bag is a telescopic corrugated rubber sleeve with an upper opening and a lower opening.
Preferably, the outer side of the bottom end face of the lower press cover is provided with an annular mounting groove which is used for allowing the lip edge at the bottom of the leather bag to be embedded.
Preferably, the outer diameter of the upper flange of the upper gland assembly is smaller than the inner diameter of the cylinder of the shield.
Preferably, horizontal fixed supports for preventing the external pressure balancing device from transversely swinging are symmetrically arranged on the outer side wall of the cylinder body of the shield.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:
1. the hydraulic system has the advantages that the compression spring presses the telescopic corrugated leather bag to pre-pressurize oil filled inside, the hydraulic pump can smoothly suck the oil through the formed positive pressure, and the whole set of device can balance the influence of external water pressure on the hydraulic system under an underwater environment due to the pre-pressurization when the hydraulic system is used underwater, so that the oil can be smoothly fed into the hydraulic pump all the time, and the normal operation of the hydraulic system is guaranteed;
2. the leather bag can be ensured to be in a safe state through the protective cover and the base which are made of stainless steel materials, and meanwhile, the leather bag cannot be damaged by the outside in the long-term use process;
3. the longitudinal hole of the shield is convenient for observation, and the oil injection amount of the leather bag can be intuitively controlled;
4. the external pressure balancing device has good sealing performance, can be used in the environment of underwater hydraulic pressure or oil-containing liquid needing compensation, and has good reliability and economy.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of the component structure of the preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the preferred embodiment of the present invention;
FIG. 3 is an isometric view of a preferred embodiment compression ring of the present invention;
figure 4 is an isometric view of a preferred embodiment of the press lid of the present invention.
Wherein, the corresponding relation between the reference numbers and the components in fig. 1-4 is:
1. a base; 2. a lower gland; 3. a skin pocket; 4. an upper gland assembly; 5. a shield; 6. a compression spring; 7. a top cover; 8. pressing a ring; 9. a lower limiting core pipe; 10. an upper limiting core pipe; 11. a threaded through hole; 12. and horizontally fixing the support.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein and, therefore, the scope of the present invention is not limited by the specific embodiments disclosed below.
An external pressure balancing device suitable for an underwater hydraulic system according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 4.
As shown in fig. 1 to 4, an external pressure balancing apparatus for a subsea hydraulic system includes: a base 1, a lower pressing cover 2, a leather bag 3, an upper pressing cover component 4, a shield 5, a compression spring 6 and a top cover 7, wherein the base 1 is formed by welding stainless steel of which the upper end and the lower end are connecting flanges and the middle part is provided with a supporting upright post, the inner ring of the upper end flange of the base 1 is annularly provided with a flange hole which is connected with the lower pressing cover 2, the outer ring of the upper end flange of the base 1 is annularly provided with a flange hole which is connected with the shield 5, the lower pressing cover 2 is a flange metal disc of which the upper part is provided with a circular boss and the lower part is provided with a connecting bolt, the outer side of the bottom end surface of the lower pressing cover 2 is provided with an annular mounting groove which is embedded into the lip edge at the bottom of the leather bag 3, the leather bag 3 is embedded into the lip edge at the bottom of the leather bag 3 between the lower pressing cover 2 and the base 1, the leather bag 3 is a telescopic corrugated rubber sleeve with an upper opening and a lower opening, the lower pressing cover 2 is fixedly connected with the upper end flange of the base 1 through the connecting bolt, the middle part of the lower pressing cover 2 is provided with a threaded through hole which is connected with an external oil pipe, the upper gland component 4 is a flange assembly consisting of two flanges, the lower flange of the upper gland component 4 is integrally embedded into the lip edge at the upper part of the leather bag 3, the lower flange of the upper gland component 4 is fixedly connected with the upper flange of the upper gland component 4 through a connecting bolt, the outer diameter of the upper flange of the upper gland component 4 is smaller than the inner diameter of the cylinder body of the shield 5, the upper flange of the upper gland component 4 is provided with a press ring 8, the press ring 8 is provided with a lower limiting core tube 9 through an annular groove arranged on an inner ring, the shield 5 is a cylindrical structural member which is processed by stainless steel, two ends of the cylindrical structural member are connecting flanges, the middle part of the cylindrical member is a cylinder body, the cylinder body of the shield 5 is longitudinally and uniformly distributed with a plurality of groups of long holes, the lower connecting flange of the shield 5 is connected with the upper end flange of the base 1, the upper connecting flange of the shield 5 is connected with a top cap 7 flange, the outer side wall of the cylinder body of the shield 5 is symmetrically provided with horizontal fixed supports 12 for preventing the external pressure balancing device from transversely swinging, the top cover 7 is a flange plate structural member made of stainless steel, a lifting lug is welded at the upper end of the top cover 7, an upper limiting core pipe 10 meeting the requirement for installation of the compression spring 6 is arranged in the middle of the lower end of the top cover 7, the compression spring 6 concentrically installed with the cylinder body of the shield 5 is sleeved between the upper limiting core pipe 10 and the lower limiting core pipe 9, and the compression spring 6 is a spring processed by stainless steel.
This patent application principle:
designing an external pressure balancing device according to the required internal positive pressure and the oil amount required to be compensated, completing manufacturing, connecting a hydraulic hose with a threaded through hole 11 of a lower pressing cover 2, slowly injecting oil into the interior, and gradually discharging the gas in the interior until the oil is filled to the end part of a pipeline;
connecting a manual pressurizing pump for oil injection, injecting oil according to the requirement of one-atmosphere stamping pressure, opening the leather bag 3 at the moment, enabling the internal oil pressure to reach the pressure under the action of a compression spring 6, uniformly opening the leather bag 3 at the moment, closing a pipeline valve, installing an external pressure balancing device on underwater equipment, connecting and installing through a flange at the lower end of a base 1, fixing a horizontal fixed support 12 in order to ensure the stability of the device, and completing the installation of the external pressure balancing device for the underwater hydraulic system;
after the underwater equipment is lowered to a certain depth under water, the equipment is started, positive pressure oil is filled in the leather bag 3, the suction port of the hydraulic pump can maintain the pressure of stamping before the water is drained after external water pressure acts, smooth suction is realized, and the internal oil is always in a state of one atmospheric pressure higher than the external water pressure due to the action of the compression spring 6, so that the suction damage of the oil pump is avoided; through the operation of the hydraulic system, the return oil flows into the external pressure balancing device, at the moment, the residual pressure of the oil compresses the compression spring 6, the leather bag 3 is unfolded, the storage of the return oil is realized, the operation of the hydraulic system is always kept, and through the repeated action, the hydraulic system can stably operate underwater, and the efficient operation of underwater equipment is realized.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An external pressure balancing device suitable for an underwater hydraulic system, comprising: a base (1), a lower gland (2), a leather bag (3), an upper gland component (4), a shield (5), a compression spring (6) and a top cover (7),
the base (1) is formed by welding stainless steel of which the upper end and the lower end are provided with connecting flanges and the middle part is provided with a supporting upright post, the inner ring of the upper end flange of the base (1) is annularly provided with a flange hole meeting the requirement of being connected with the lower gland (2), the outer ring of the upper end flange of the base (1) is annularly provided with a flange hole meeting the requirement of being connected with the shield (5),
the lower gland (2) is a flange metal disc with a round boss arranged at the upper part and a connecting bolt arranged at the lower part, the lip edge at the bottom of the leather bag (3) is embedded between the lower gland (2) and the base (1), the lower gland (2) is tightly connected with the flange at the upper end of the base (1) through the connecting bolt, the middle part of the lower gland (2) is provided with a threaded through hole (11) meeting the connection with an external oil pipe,
go up gland subassembly (4) for adopting the flange sub-assembly that two flanges constitute, go up the whole embedding of lower part flange of gland subassembly (4) to inside the lip limit of leather bag (3) upper portion, go up the lower part flange of gland subassembly (4) through connecting bolt with go up the upper portion flange fastening connection of gland subassembly (4), be provided with clamping ring (8) on the upper portion flange of going up gland subassembly (4), spacing core pipe (9) are down installed through the ring channel that the inner circle was seted up to clamping ring (8),
the protective cover (5) is a cylindrical structural member which is made of stainless steel, the two ends of the cylindrical structural member are provided with connecting flanges, the middle of the cylindrical structural member is provided with a cylinder, a plurality of groups of long holes are longitudinally and uniformly distributed in the cylinder of the protective cover (5), the lower connecting flange of the protective cover (5) is connected with the upper end flange of the base (1), the upper connecting flange of the protective cover (5) is connected with the top cover (7) through a flange,
the top cover (7) is a flange plate structural member made of stainless steel, a lifting lug is welded at the upper end of the top cover (7), an upper limiting core pipe (10) meeting the installation requirement of the compression spring (6) is arranged in the middle of the lower end of the top cover (7),
the compression spring (6) which is concentrically arranged with the cylinder body of the shield (5) is sleeved between the upper limiting core tube (10) and the lower limiting core tube (9), and the compression spring (6) is a spring processed by stainless steel.
2. External pressure equalizing device applied to underwater hydraulic system according to claim 1 characterized in that the bladder (3) is a telescopic bellows-type rubber sleeve with upper and lower openings.
3. The external pressure balancing device suitable for underwater hydraulic system as claimed in claim 1, wherein the outer side of the bottom end surface of the lower gland (2) is provided with an annular mounting groove for the lip edge of the bottom of the leather bag (3) to be embedded.
4. External pressure equalizing device for underwater hydraulic systems according to claim 1, characterized in that the external diameter of the upper flange of the upper gland assembly (4) is smaller than the internal diameter of the cylinder of the shield (5).
5. External pressure equalizing device applied to underwater hydraulic system according to claim 1 characterized in that the outer side wall of the cylinder of the shield (5) is symmetrically provided with horizontal fixed supports (12) for preventing the external pressure equalizing device from swaying laterally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220654356.7U CN216861785U (en) | 2022-03-25 | 2022-03-25 | External pressure balancing device suitable for underwater hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220654356.7U CN216861785U (en) | 2022-03-25 | 2022-03-25 | External pressure balancing device suitable for underwater hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216861785U true CN216861785U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220654356.7U Active CN216861785U (en) | 2022-03-25 | 2022-03-25 | External pressure balancing device suitable for underwater hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216861785U (en) |
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2022
- 2022-03-25 CN CN202220654356.7U patent/CN216861785U/en active Active
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