Piston type double-pressure compensator

Abstract

The utility model discloses a piston type double-pressure compensator which comprises a compensator barrel, a water-permeable end cover and a sealing connecting flange, and a water-permeable pipe, wherein the two ends of the compensator barrel are detachably connected with the water-permeable end cover and the sealing connecting flange; the piston is connected to the inner side of the compensator in a sleeved mode and comprises a first piston and a second piston which are of an integrated structure. Two ends of the elastic component are respectively connected with the permeable end cover and the first piston; the watertight connector assembly is fixed to the second piston and extends to the side portion of the sealing connecting flange. According to the piston type double-pressure compensator, the double-layer piston structure is arranged in the compensator barrel, so that the compensator barrel is divided into the water cavity, the air cavity and the oil cavity, and the elastic assembly is additionally arranged in the water cavity, so that the pressure in the oil cavity is slightly larger than that in the water cavity; and meanwhile, the water cavity and the oil cavity are separated by adopting the air cavity, so that the situation that the use of the double-pressure compensator is affected due to leakage is further prevented.

Description

Technical Field

[0001] This utility model relates to a piston-type dual-pressure compensator, belonging to the field of deep-sea equipment technology. Background Technology

[0002] With the continuous development of the deep sea, the demand for deep-sea equipment is also increasing. Due to the harsh environment and high pressure of the deep sea, the manufacturing process of underwater equipment must fully consider sealing and reliability, and minimize maintenance costs. Currently, pressure compensators are widely used to improve the pressure resistance of underwater equipment, thereby meeting the requirements for sealing and reliability. Traditional pressure compensation methods are mostly hose-type, bladder-type, or piston-type, but all have certain shortcomings. For example, hose-type and bladder-type pressure compensators will leak if the hose or bladder wears or ruptures, causing the compensator to fail rapidly and resulting in catastrophic consequences, seriously affecting the safety and reliability of the equipment. Similarly, traditional piston-type compensators are also prone to sealing failure; once they fail, they will cause equipment damage and property loss. Therefore, a pressure compensator is needed to increase the safety and reliability of underwater equipment. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a piston-type dual-pressure compensator to increase the safety and reliability of underwater equipment.

[0004] To achieve the above objectives, this utility model provides a piston-type dual-pressure compensator, comprising:

[0005] The compensator cylinder has detachable end caps and sealing flanges at both ends;

[0006] A piston, fitted inside the compensator cylinder, includes a first piston and a second piston of integral structure.

[0007] The elastic component is connected at both ends to the permeable end cap and the first piston, respectively.

[0008] A watertight connector assembly is fixed to the second piston and extends to the side of the sealing connection flange.

[0009] Furthermore, the permeable end cap has a groove on the side face away from the piston for fixing the filter cap.

[0010] Furthermore, the first piston is provided with a first annular groove on its circumference for placing a scraping ring.

[0011] Furthermore, it also includes a leakage detection device, which is fixed between the first piston and the second piston.

[0012] Furthermore, the watertight connector assembly is fixedly connected to the connector.

[0013] Furthermore, the second piston has a second annular groove on its circumference for placing a sealing assembly.

[0014] Furthermore, the permeable end cap and the sealing flange are detachably connected to the compensator cylinder by bolts.

[0015] Furthermore, the elastic component is a spring.

[0016] Furthermore, the compensator cylinder is divided into three cavities by the first piston and the second piston;

[0017] The water-permeable end cap and the first piston form a water chamber, the first piston and the second piston form an air chamber, and the second piston and the sealing connection flange form an oil chamber.

[0018] By adopting the above technical solution, the present invention provides a piston-type dual-pressure compensator, which divides the compensator cylinder into a water chamber, an air chamber, and an oil chamber by setting a double-layer piston structure inside the compensator cylinder. By adding an elastic component in the water chamber, the pressure in the oil chamber is made slightly greater than the pressure in the water chamber, thus ensuring the safe use of underwater equipment. At the same time, the air chamber is used to separate the water chamber and the oil chamber, thereby further preventing leakage of the dual-pressure compensator from affecting its use. Attached Figure Description

[0019] Fig. 1 A cross-sectional view of a piston-type dual-pressure compensator provided by this utility model;

[0020] Fig. 2 An exploded view of a piston-type dual-pressure compensator provided by this utility model;

[0021] Fig. 3 The working principle diagram of a piston-type dual-pressure compensator provided by this utility model.

[0022] In the diagram: 1. Expansion cylinder; 2. Water-permeable end cap; 3. Sealing connection flange; 4. Piston; 5. First piston; 6. Second piston; 7. Water chamber; 8. Elastic component; 9. Watertight joint assembly; 10. Filter cover; 11. Scraper ring; 12. Leakage detection device; 13. Wiring channel; 14. Sealing assembly; 15. Air chamber; 16. Oil chamber. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Pressure compensators, typically used to improve the pressure resistance of underwater equipment, include hose-type, bladder-type, or piston-type compensators, all of which can affect the safety and reliability of the underwater equipment to some extent. Therefore, a safe and reliable pressure compensator is needed.

[0024] Example

[0025] like Figs. 1 to 3 As shown, this utility model provides a piston-type dual-pressure compensator, comprising:

[0026] The compensator cylinder 1 has a water-permeable end cap 2 and a sealing flange 3 detachably connected to both ends; the water-permeable end cap 2 and the sealing flange 3 are respectively detachably connected to the compensator cylinder 1 by bolts.

[0027] The permeable end cap 2 has a groove on the side of its end face away from the piston 4 for fixing the filter cover 10. The function of the filter cover 10 is to prevent impurities and organisms in the seawater from seeping in.

[0028] Piston 4, fitted inside the compensator, includes a first piston 5 and a second piston 6 of integral structure. The first piston 5 has a first annular groove around its circumference for accommodating a scraper ring 11. The second piston 6 has a second annular groove around its circumference for accommodating a sealing assembly 14. Inside the aforementioned cavity, a leakage detection device 12 is fixed in the air cavity between the first piston 5 and the second piston 6. A wiring channel 13 is provided inside the second piston 6, and a watertight connector assembly 9 is provided at the end of the wiring channel 13. The compensator cylinder 1 is divided into three cavities by the first piston 5 and the second piston 6; wherein the water-permeable end cap 2 and the first piston 5 form a water cavity 7, the first piston 5 and the second piston 6 form an air cavity 15, and the second piston 6 and the sealing flange 3 form an oil cavity 16. When the piston 4 type dual pressure compensator contacts the seawater and fills the entire space of the water chamber 7, the air chamber 15 is used to separate the water chamber 7 and the oil chamber 16. As the diving depth increases, the first piston 5 and the second piston 6 both move towards the oil chamber 16, thereby compressing the space of the oil chamber 16.

[0029] It should be added here that, due to the increased pressure in the deep sea, there is a possibility of leakage in the first piston 5. Therefore, a scraping ring 11 is added around the compensator cylinder 1 and the first piston 5 to remove dirt and increase the sealing effect. When the first piston 5 leaks, the leakage detection component, including but not limited to a water inlet sensor, will detect the leakage and issue an alarm.

[0030] The elastic component 8 is connected at both ends to the permeable end cap 2 and the first piston 5, respectively; in an optional embodiment, the elastic component 8 is a spring. Because of the use of a spring, the pressure inside the oil chamber 16 is slightly greater than the seawater pressure, thereby improving the reliability of the pressure compensator. This is because even at the maximum water depth, the presence of the spring still provides a compensation margin.

[0031] The watertight connector assembly 9 is fixed to the second piston 6 and extends to the side of the sealing connection flange 3. The watertight connector assembly 9 is fixedly connected to the connector. In actual use, the watertight connector assembly 9 is connected to the oil chamber 16 of an external compensation device.

[0032] Therefore, the working process of the above-mentioned piston-type dual-pressure compensator is as follows:

[0033] When the piston-type dual pressure compensator is working, the water enters the water chamber 7 through the water-permeable end cap 2H port with filter cover 10, while the oil chamber 16 is connected to the external compensation device, so the oil chamber 16 is filled with oil through the Y port; the water chamber 7 and the oil chamber 16 are blocked by the air chamber 15 separated by the first piston 5 and the second piston 6.

[0034] As the diving depth increases, the first piston 5 and the second piston 6 respectively squeeze the oil chamber 16 towards the Y port until, under the action of the spring, the pressure in the oil chamber 16 is slightly greater than the seawater pressure, reaching a state of equilibrium.

[0035] When the first piston 5 leaks, a leakage detection component, such as a water inlet sensor, located between the first piston 5 and the second piston 6, detects the leak and issues an alarm. This utility model provides a piston-type dual-pressure compensator that divides the compensator cylinder into a water chamber, an air chamber, and an oil chamber by setting a double-layer piston structure inside the compensator cylinder. An elastic component is added to the water chamber to ensure that the pressure in the oil chamber is slightly higher than the pressure in the water chamber, thus ensuring the safe use of underwater equipment. Simultaneously, an air chamber separates the water chamber from the oil chamber, further preventing leakage from affecting the use of the dual-pressure compensator.

Claims

1. A piston-type dual-pressure compensator, characterized in that, include: The compensator cylinder has detachable end caps and sealing flanges at both ends; A piston, fitted inside the compensator cylinder, includes a first piston and a second piston of integral structure. The elastic component is connected at both ends to the permeable end cap and the first piston, respectively. A watertight connector assembly is fixed to the second piston and extends to the side of the sealing connection flange.

2. The piston-type dual-pressure compensator as described in claim 1, characterized in that: The permeable end cap has a groove on the side of its end face away from the piston for fixing the filter cap.

3. The piston-type dual-pressure compensator as described in claim 1, characterized in that: The first piston has a first annular groove on its circumference for placing a scraping ring.

4. The piston-type dual-pressure compensator as described in claim 1, characterized in that: It also includes a leak detection device, which is fixed between the first piston and the second piston.

5. The piston-type dual-pressure compensator as described in claim 4, characterized in that: The watertight connector assembly is fixedly connected to the connector.

6. The piston-type dual-pressure compensator as described in claim 1, characterized in that: The second piston has a second annular groove on its circumference for placing a sealing assembly.

7. The piston-type dual-pressure compensator as described in claim 1, characterized in that: The permeable end cap and the sealing flange are detachably connected to the compensator cylinder by bolts.

8. The piston-type dual-pressure compensator according to claim 1, characterized in that: The elastic component is a spring.

9. The piston-type dual-pressure compensator according to claim 1, characterized in that: The compensator cylinder is divided into three chambers by the first piston and the second piston; The water-permeable end cap and the first piston form a water chamber, the first piston and the second piston form an air chamber, and the second piston and the sealing connection flange form an oil chamber.

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