CN112414616A

CN112414616A - Seawater pressure compensator with liquid level detection function

Info

Publication number: CN112414616A
Application number: CN202011346903.7A
Authority: CN
Inventors: 姜淑忠; 戴明轩; 姜雷
Original assignee: SUZHOU TAIDUO ELECTRIC CO LTD
Current assignee: SUZHOU TAIDUO ELECTRIC CO LTD
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-02-26

Abstract

The invention discloses a seawater pressure compensator with liquid level detection, which comprises an upper barrel, a lower barrel, a framework, a compensation film, a pressing plate, a spring, a bottom plate, a stay wire sensor and a watertight connector, wherein the upper barrel and the lower barrel are hermetically connected through a flange surface of the compensation film to form an upper cavity and a lower cavity which are mutually independent, the framework is arranged in the lower barrel in a sliding manner, the compensation film is connected with the framework through the pressing plate, the bottom plate is fixed at the bottom of the lower barrel, the spring is connected with the framework and the bottom plate, the stay wire sensor is arranged in the upper barrel and connected with the pressing plate and used for detecting the axial position of the pressing plate, the watertight connector is arranged on the upper barrel and used for connecting the stay wire sensor and an external cable. The invention guides the compensation film to move axially by the mutual matching of the pressing plate and the framework, after the compensator is immersed in seawater, the contact area inside and outside the compensation film is the same, and when the seawater pressure changes, the internal pressure of the compensator also changes along with the change of the seawater pressure, thereby realizing the purpose of seawater pressure compensation.

Description

Seawater pressure compensator with liquid level detection function

Technical Field

The invention relates to a seawater pressure compensator with liquid level detection.

Background

In recent years, with the increasing investment of China in the ocean field, the number of offshore operation and detection equipment is increasing year by year. The seawater pressure compensator is used for balancing the influence of external seawater pressure on oil-filled cavity parts, is an important sub-part in underwater equipment, and directly influences the use state of the underwater equipment according to the performance of the seawater pressure compensator.

Disclosure of Invention

Aiming at the defects in the use of the existing seawater pressure compensator, the invention discloses a seawater pressure compensator with liquid level detection, which comprises an upper barrel, a lower barrel, a framework, a compensation film, a pressure plate, a spring, a bottom plate, a stay wire sensor and a watertight connector, wherein the upper barrel is connected with the lower barrel through a flange, the compensation film is arranged between the upper barrel and the lower barrel to form an upper cavity and a lower cavity which are mutually independent, the framework is arranged in the lower barrel in a sliding manner, the compensation film is connected with the framework through the pressure plate, the bottom plate is fixed at the bottom of the lower barrel, a circulation port for flowing seawater is arranged on a fixing plate, the spring is arranged in the lower cavity and is connected with the framework and the bottom plate, the stay wire sensor is arranged in the upper cavity and is connected with the pressure plate for detecting the axial position of the pressure plate, the watertight connector is arranged on the upper cylinder body and used for connecting the stay wire sensor and an external cable, and the upper cylinder body is provided with a mounting opening.

Further, the lower end of the framework extends radially outwards to form a guide edge matched with the inner wall of the lower cylinder, and the framework and the inner wall of the lower cylinder form an annular cavity for accommodating the compensation film.

Furthermore, the pressure plate and the framework are fixed through bolts and nuts, and an O-shaped ring is arranged between the bolts and the pressure plate.

Furthermore, the stay wire of the stay wire sensor is fixed through a screw, a wire cavity and a fixed cavity are arranged in the screw, the wire head of the stay wire sensor penetrates through the wire cavity and is fixed in the fixed cavity, round corners are arranged at the upper end and the lower end of the wire cavity, and the round corners are larger than 0.5 mm.

Furthermore, a guide ring is arranged on the bottom plate, and one end of the spring is sleeved on the guide ring.

Further, the installation opening sets up 3 at least.

Furthermore, an observation hole is formed in the side wall of the lower cylinder, and the observation hole is not higher than the maximum position of the downward movement of the compensation film.

Further, the observation hole is a round, square or kidney-shaped hole.

Furthermore, a fillet is arranged in the observation hole.

The invention has the following beneficial effects:

the invention guides the compensation film to move axially through the mutual matching of the pressing plate and the framework, after the compensation film is immersed in seawater, the contact area inside and outside the compensation film is the same, and when the seawater pressure changes, the internal pressure of the compensator also changes along with the change of the seawater pressure, thereby realizing the purpose of compensating the seawater pressure. And a pull wire sensor is added to feed back the liquid level of the compensator in real time, so that the service performance and reliability of the compensator are effectively improved.

Drawings

FIG. 1 is a schematic perspective view of a seawater pressure compensator with liquid level detection according to the present invention;

FIG. 2 is a schematic perspective view of FIG. 1 from another perspective;

FIG. 3 is a cross-sectional view of a seawater pressure compensator with level sensing of the present invention;

FIG. 4 is a schematic view of a screw;

the reference numbers are as follows:

1. the device comprises an upper barrel, a lower barrel, a framework, a compensation film, a pressure plate, a spring, a base plate, a bottom plate, a stay wire sensor 9, a watertight connector 11, an upper barrel, a mounting port 12, a mounting port 21, a lower cavity, a viewing hole 22, a guide edge 31, a guide edge 32, an annular cavity 51, a bolt 52, a nut 53, an O-shaped ring 71, a circulation port 72, a guide ring 81, a screw 82, a lead cavity 83, a fixing cavity 84 and a chamfer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A seawater pressure compensator with liquid level detection is shown in figures 1-3 and comprises an upper barrel body 1, a lower barrel body 2, a framework 3, a compensation film 4, a pressing plate 5, a spring 6, a bottom plate 7, a stay wire sensor 8 and a watertight connector 9, wherein the upper barrel body 1 and the lower barrel body 2 are connected through flanges and fixed through screws. The sealing between the upper cylinder body 1 and the lower cylinder body 2 is sealed by a flange surface of a compensation film 4, and the flange surface sealing form of the compensation film comprises a plane sealing form or a flange surface sealing form with an O-shaped ring; the plane sealing is realized by installing a compensation film 4 between the flange surfaces of the upper cylinder 1 and the lower cylinder 2 and clamping the compensation film 4 through screws; the flange face sealing mode of the O-shaped ring is that the O-shaped ring is arranged on the flange flanges of the upper barrel body 1 and the lower barrel body 2, the compensation film 4 is arranged between the flange faces of the upper barrel body 1 and the lower barrel body 2, and the compensation film 4 is clamped through screws to realize sealing. The upper cylinder 1 and the compensation film 4 form a sealed upper cavity 11, and the lower cylinder and the compensation film 4 form an open lower cavity 21. The framework 3 is arranged in the lower barrel 2 in a sliding mode, the inner wall of the lower barrel 2 is used for guiding the framework 3 to move axially, and the compensation film 4 is fixed on the framework 3 through the pressing plate 5. The bottom plate 7 is fixedly installed at the bottom of the lower barrel 2 through screws, a circulation port 71 for flowing seawater is formed in the bottom plate 7, the spring 6 is arranged in the lower cavity 21 and connected with the framework 3 and the bottom plate 7, the spring 6 is used for keeping the compensator to always maintain a certain positive pressure relative to the seawater, and the positive pressure range is 0.05bar to 0.5 bar. The stay wire sensor 8 is arranged in the upper cavity 11, is connected with the pressing plate 5 and is used for detecting the axial position of the pressing plate 5, and the water sealing connector is arranged on the upper barrel 1 and is used for connecting the stay wire sensor 8 with an external cable so as to ensure the sealing property of the upper cavity 11. The upper cylinder body 1 is provided with a mounting port 12 for a connector, a ball valve, a compensation port and the like. Preferably, at least 3 mounting ports 12 are provided, one of which is used for mounting the watertight connector 9, the other is used for a compensation port and is connected with equipment through a hose, and the other is used for mounting a ball valve and is used for injecting hydraulic oil into the upper cavity 11.

In one embodiment, as shown in fig. 1-3, the lower end of the frame 3 extends radially outward to form a guiding edge 31 matching with the inner wall of the lower cylinder, and the frame 3 and the inner wall of the lower cylinder 2 form an annular cavity 32 for accommodating the compensation film. The framework 3 has a guiding function and keeps the compensation film 4 to keep axial movement in the up-and-down movement process.

In one embodiment, as shown in fig. 1-3, the pressure plate 5 is fixed to the frame 3 by bolts 51 and nuts 52, and an O-ring 53 is disposed between the bolts 51 and the pressure plate 5. Sealing between the bolts 51 and the pressure plate 5 is achieved.

In one embodiment, as shown in fig. 1-4, the pull wire of the pull wire sensor 8 is fixed by a screw 81, a wire cavity 82 and a fixing cavity 83 are arranged in the screw 81, the wire end of the pull wire sensor 8 passes through the wire cavity 82 and is fixed in the fixing cavity 83, and rounded corners 84 are arranged on the upper end and the lower end of the wire cavity 82 and are larger than 0.5 mm. The fixing wall 83 is larger than the wire chamber 82 so that the tip of the thread is knotted or fixed at its end after passing through the wire chamber 82 so that the tip of the thread is fixed in the fixing wall 83. The chamfer is adopted to reduce the friction between the thread end and the screw 81 to cause the thread end to be worn off. Preferably, the axis of the bolt 51 is provided with a threaded hole, and the screw 81 is in threaded engagement with the threaded hole.

In one embodiment, as shown in fig. 1-3, a guide ring 72 is disposed on the bottom plate 7, and an end of the spring 6 is fitted over the guide ring 72. For guiding the compression and expansion of the spring 6.

In one embodiment, as shown in fig. 1-3, the side wall of the lower cylinder 2 is provided with a viewing hole 22, and the viewing hole 22 is not higher than the maximum position of the downward movement of the compensation film 4. Wherein the shape of the viewing aperture 22 includes, but is not limited to, a circular, square, or kidney-shaped aperture. In addition, in order to avoid unnecessary wear during the axial movement of the compensation diaphragm 4, it is necessary to provide a rounded corner in the viewing aperture 22, regardless of the shape of the viewing aperture 22.

When the device is used, as shown in figures 1-4, hydraulic oil is injected into the upper cavity 11 through the ball valve, the compensator is connected with equipment through the hose, when the compensator enters seawater, the hydraulic oil in the upper cavity 11 acts on the pressure plate 5, the contact area of the external down lamp is directly contacted with the seawater, and when the pressure of the seawater is increased, the hydraulic oil in the upper cavity 11 is filled into the equipment; when the seawater pressure is reduced, the hydraulic oil in the equipment flows back to the compensator. Thereby realizing the purpose of seawater compensation.

The above are merely preferred embodiments of the present invention, and are not intended to limit the scope of the invention; it is intended that the following claims be interpreted as including all such alterations, modifications, and equivalents as fall within the true spirit and scope of the invention.

Claims

1. A seawater pressure compensator with liquid level detection is characterized by comprising an upper barrel, a lower barrel, a framework, a compensation film, a pressing plate, a spring, a bottom plate, a stay wire sensor and a watertight connector, wherein the upper barrel is connected with the lower barrel through a flange, the compensation film is arranged between the upper barrel and the lower barrel to form an upper cavity and a lower cavity which are mutually independent, the framework is arranged in the lower barrel in a sliding manner, the compensation film is connected with the framework through the pressing plate, the bottom plate is fixed at the bottom of the lower barrel, a circulation port for seawater inflow is formed in a fixing plate, the spring is arranged in the lower cavity and is connected with the framework and the bottom plate, the stay wire sensor is arranged in the upper barrel and is connected with the pressing plate and is used for detecting the axial position of the pressing plate, and the watertight connector is arranged on the upper barrel, the pull wire sensor is used for connecting the pull wire sensor and an external cable, and the upper cylinder body is provided with a mounting opening.

2. The seawater pressure compensator with liquid level detection as claimed in claim 1, wherein the lower end of the frame extends radially outwards to form a guiding edge engaged with the inner wall of the lower cylinder, and the frame and the inner wall of the lower cylinder form an annular cavity for accommodating the compensation membrane.

3. The seawater pressure compensator with liquid level detection as claimed in claim 1, wherein the pressure plate and the frame are fixed by bolts and nuts, and an O-ring is arranged between the bolts and the pressure plate.

4. The seawater pressure compensator with liquid level detection as claimed in claim 1, wherein the stay wire of the stay wire sensor is fixed by a screw, a wire cavity and a fixing cavity are arranged in the screw, the wire head of the stay wire sensor passes through the wire cavity and is fixed in the fixing cavity, and fillets are arranged on the upper end and the lower end of the wire cavity and are larger than 0.5 mm.

5. The seawater pressure compensator with liquid level detection as claimed in claim 1, wherein the bottom plate is provided with a guide ring, and one end of the spring is sleeved on the guide ring.

6. The seawater pressure compensator with liquid level detection as claimed in claim 1, wherein at least 3 mounting ports are provided.

7. The seawater pressure compensator with liquid level detection as claimed in claim 1, wherein the side wall of the lower cylinder is provided with an observation hole, and the observation hole is not higher than the maximum position of the downward movement of the compensation membrane.

8. The seawater pressure compensator with liquid level detection as claimed in claim 7, wherein the observation hole is a circular, square or kidney-shaped hole.

9. The seawater pressure compensator with liquid level detection as claimed in claim 7, wherein a rounded corner is disposed in the observation hole.