Underwater control system pressure compensation device and use method thereof

Abstract

The invention relates to an underwater control system pressure compensation device and a using method thereof, and belongs to the technical field of offshore oil engineering, the underwater control system pressure compensation device comprises an underwater control module barrel and two compensator shells, the underwater control module barrel is provided with a cover plate, and two sides of the cover plate are respectively provided with a water inlet; the two compensator shells are arranged on the two sides of the interior of the underwater control module barrel, and each compensator shell is communicated with one water inlet through one connecting pipe; a leather bag is arranged in each compensator shell, and each leather bag is communicated with the interior of the underwater control module cylinder through a communicating pipe; and each water inlet is provided with a filter screen. When seawater enters the two compensator shells through the two water inlets respectively, seawater impurities are filtered out through the filter screens respectively, filtrate enters the underwater control module cylinders of the corresponding compensator shells through the connecting pipes, and therefore the purpose that the impurities in the seawater are automatically cleaned through the filter screens is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of offshore oil engineering, and particularly relates to an underwater control system pressure compensation device and a method for using the same. Background Art

[0002] When the underwater control module works underwater, the cylinder body will be affected by the pressure of seawater, and the application depth of the underwater control module will gradually increase. If the cylinder body of the subsea control module (SCM) directly uses a pressure-resistant housing, as the water depth increases, the thickness of the cylinder body will gradually increase, and structures such as stiffeners need to be designed. The overall size is large and the structure is complex, and there are certain risks. In order to perform pressure compensation in seawater, a pressure compensation device for the underwater control system has emerged.

[0003] The current underwater control system pressure compensation device cannot clean impurities during pressure compensation, resulting in easy blockage of the water inlet by substances, ultimately affecting the progress of pressure compensation. Summary of the Invention

[0004] In view of the above problems, the purpose of the present invention is to provide an underwater control system pressure compensation device and a method for using the same, which are used to solve the problem that the current underwater control system pressure compensation device cannot clean impurities during pressure compensation, resulting in easy blockage of the water inlet by substances, ultimately affecting the progress of pressure compensation.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] In the first aspect, the present invention discloses an underwater control system pressure compensation device, including

[0007] an underwater control module cylinder body, which is configured with a cover plate, and an inlet is respectively arranged on both sides of the cover plate;

[0008] two compensator housings are arranged on both sides inside the underwater control module cylinder body, each compensator housing is connected to an inlet through a connecting pipe; a bladder is arranged in each compensator housing, and each bladder is connected to the inside of the underwater control module cylinder body through a communicating pipe;

[0009] a filter screen is configured on each inlet.

[0010] Preferably, an inlet groove is respectively arranged on both sides of the cover plate, a compensator filter is inlaid and installed on each inlet groove, and the filter screen is installed on each compensator filter;

[0011] a water outlet is arranged at the bottom of the compensator filter, the water outlet is butted against the top end of its corresponding connecting pipe, and the bottom end of the connecting pipe extends into the compensator housing and is connected to the cavity above the underwater control module cylinder body.

[0012] Preferably, each water inlet is configured with a set of impurity cleaning mechanisms, and the two sets of impurity cleaning mechanisms are respectively arranged at the water inlets on both sides of the cover plate and the corresponding compensator housings.

[0013] Preferably, each set of the impurity cleaning mechanisms further includes a cleaning brush, and each cleaning brush is arranged above the corresponding filter screen and can rotate above the filter screen of its respective water inlet to brush the impurities at the corresponding water inlet to achieve cleaning.

[0014] Preferably, each compensator housing is configured with an end cover, and the compensator housing and its end cover jointly enclose a closed cavity. The leather bag is arranged at the lower part of the corresponding compensator housing so that an air cavity is formed at the upper part of the corresponding compensator housing.

[0015] Preferably, each cleaning brush is configured with a set of cleaning brush driving mechanisms.

[0016] The cleaning brush driving mechanism includes a transmission sleeve, a transmission rod and a movable plate.

[0017] The movable plate is arranged in the corresponding compensator housing and divides the compensator housing into an upper part and a lower part. The leather bag is arranged at the lower part of the compensator housing, and the movable plate is arranged in close contact with the leather bag.

[0018] The top end of the transmission sleeve is fixed at the middle of the bottom surface of the cleaning brush, and the transmission sleeve passes through the connecting pipe.

[0019] The lower part of the transmission sleeve is sleeved outside the transmission rod through a threaded connection sleeve.

[0020] The bottom end of the transmission rod is fixedly connected with the movable plate.

[0021] Preferably, a telescopic rod is respectively arranged on both sides of the upper part of each compensator housing. The top end of each telescopic rod is fixedly connected with the end cover, and the bottom end is fixedly connected with the movable plate.

[0022] Preferably, silicone oil is pre-filled in both the leather bag and the underwater control module cylinder body. A communicating pipe is arranged at the bottom end of the leather bag, and the inside of the leather bag is communicated with the inside of the underwater control module cylinder body through the communicating pipe.

[0023] In a second aspect, the present invention also discloses a usage method of an underwater control system pressure compensation device. By using the above-mentioned underwater control system pressure compensation device, the usage method includes the following steps:

[0024] Seawater enters the two compensator housings through the two water inlets respectively, and the seawater impurities are filtered out through the filter screens respectively. The filtrate enters the inside of the underwater control module cylinder bodies of their respective compensator housings through the connecting pipes.

[0025] The filtrate accumulates in the inner cavity above the underwater control module cylinder of each compensator housing, gradually pushing the movable plate downward to compress the leather bag until the internal pressure of the underwater control module cylinder reaches equilibrium with the external seawater, thereby achieving a pressure compensation effect.

[0026] Wherein, during the process of the movable plate compressing the leather bag downward, the movable plate drives the transmission rod to move downward, the transmission rod drives the transmission sleeve to rotate, and the transmission sleeve further drives the cleaning brush to rotate above the filter screen of each water inlet, so as to brush and clean the impurities on the cover plate at the corresponding water inlet and above the filter screen, avoiding the situation that pressure compensation cannot be carried out due to the blockage of the filter screen by impurities in the seawater.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] (1) The present invention discloses a pressure compensation device for an underwater control system, which includes an underwater control module cylinder and two compensator housings. The underwater control module cylinder is provided with a cover plate, and each side of the cover plate is provided with a water inlet; the two compensator housings are arranged on both sides inside the underwater control module cylinder, and each compensator housing is connected to a water inlet through a connecting pipe; a leather bag is arranged in each compensator housing, and each leather bag is connected to the inside of the underwater control module cylinder through a communicating pipe; a filter screen is configured on each water inlet. When seawater enters the two compensator housings through the two water inlets respectively, the seawater impurities are filtered out through the filter screens, and the filtrate enters the inside of the underwater control module cylinder of each compensator housing through the connecting pipes, thereby realizing the automatic cleaning of seawater impurities through the filter screens.

[0029] (2) The present invention discloses a pressure compensation device for an underwater control system. A cleaning brush is correspondingly arranged above each filter screen, and each cleaning brush is configured with a set of cleaning brush transmission mechanisms. The cleaning brush transmission mechanism includes a transmission sleeve, a transmission rod and a movable plate. The movable plate is arranged in the corresponding compensator housing and divides the compensator housing into an upper part and a lower part. The leather bag is arranged in the lower part of the compensator housing, and the movable plate is tightly attached to the leather bag; the top end of the transmission sleeve is fixed in the middle of the bottom surface of the cleaning brush and the transmission sleeve passes through the connecting pipe; the lower part of the transmission sleeve is sleeved outside the transmission rod through a threaded connection sleeve; the bottom end of the transmission rod is fixedly connected to the movable plate. When the movable plate compresses the leather bag downward, the movable plate drives the transmission rod to move downward, the transmission rod drives the transmission sleeve to rotate, and the transmission sleeve further drives the cleaning brush to rotate above the filter screen of each water inlet to brush the impurities at the corresponding water inlet, further improving the cleaning efficiency.

[0030] (3) The present invention discloses a method for using a pressure compensation device of an underwater control system, including: Step A: Seawater enters two compensator housings through two water inlets respectively, and seawater impurities are filtered out through filters. The filtrate enters the interior of the underwater control module cylinder of each compensator housing through a connecting pipe; Step B: The filtrate accumulates in the inner cavity above the underwater control module cylinder of each compensator housing, gradually pushing the movable plate downward to compress the leather bag until the internal pressure of the underwater control module cylinder is balanced with the external seawater, thereby achieving the pressure compensation effect. Among them, during the process of the movable plate compressing the leather bag downward, the movable plate drives the transmission rod to move downward, the transmission rod drives the transmission sleeve to rotate, and the transmission sleeve then drives the cleaning brush to rotate above the filter screen of each water inlet to brush and clean the impurities on the cover plate located above the filter screen at the corresponding water inlet, avoiding the situation where pressure compensation cannot be carried out due to the blockage of the filter screen by impurities in seawater. Description of the Drawings

[0031] Figure 1 is an external schematic diagram of the pressure compensation device of the underwater control system provided in Embodiment 1 of the present invention;

[0032] Figure 2 is a cross-sectional view of the internal structure of the pressure compensation device of the underwater control system provided in Embodiment 1 of the present invention;

[0033] Figure 3 is provided in Embodiment 1 of the present invention Figure 2 partial enlarged view of part A therein;

[0034] Figure 4 is a structural schematic diagram of the impurity cleaning mechanism provided in Embodiment 1 of the present invention.

[0035] Description of the Reference Numerals:

[0036] 1 - underwater control module cylinder, 10 - cover plate, 11 - central tube;

[0037] 2 - compensator housing, 20 - connecting pipe, 21 - end cover;

[0038] 3 - leather bag, 30 - communicating pipe;

[0039] 4 - compensator filter, 40 - filter screen,

[0040] 5 - impurity cleaning mechanism, 50 - cleaning brush, 51 - transmission sleeve, 52 - transmission rod, 53 - movable plate, 54 - telescopic rod. Detailed Embodiment

[0041] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be fully conveyed to those skilled in the art.

[0042] To solve the problem that the current pressure compensation device of the underwater control system cannot clean impurities during pressure compensation, resulting in easy blockage of the water inlet by substances and ultimately affecting the pressure compensation, the present invention discloses an underwater control system pressure compensation device and its usage method. The underwater control system pressure compensation device includes two filter nets, which are respectively arranged on two water inlets, and a cleaning brush is respectively arranged above each filter net. Each cleaning brush is configured with a set of cleaning brush transmission mechanisms. The cleaning brush transmission mechanism includes a transmission sleeve, a transmission rod, and a movable plate. A movable plate is arranged in each compensator housing, and the movable plate is tightly attached to the airbag. The cleaning brush and the movable plate are sleeved through the transmission sleeve and the transmission rod. During the process of the movable plate compressing the airbag downward, the movable plate drives the transmission rod to move downward, the transmission rod drives the transmission sleeve to rotate, and the transmission sleeve further drives the cleaning brush to rotate above the filter net of each water inlet, so as to brush and clean the impurities on the cover plate at the corresponding water inlet and above the filter net, avoiding the situation that pressure compensation cannot be carried out due to blockage of the filter net by impurities in seawater.

[0043] Embodiment 1: An underwater control system pressure compensation device

[0044] Embodiment 1 of the present invention provides an underwater control system pressure compensation device, and its structure will be described in detail below with reference to the accompanying drawings.

[0045] Reference Figures 1 to 4 , the underwater control system pressure compensation device includes an underwater control module cylinder 1, two compensator housings 2, and two sets of impurity cleaning mechanisms.

[0046] The underwater control module cylinder 1 is configured with a cover plate 10, and a water inlet 100 is respectively arranged on both sides of the cover plate 10.

[0047] Two compensator housings 2 are arranged on both sides inside the underwater control module cylinder 1. Each compensator housing 2 is connected to a water inlet 100 through a connecting pipe 20. A bladder 3 is arranged in each compensator housing 2, and each bladder 3 is connected to the inside of the underwater control module cylinder 1 through a communicating pipe 30.

[0048] A filter net 40 is configured on each water inlet 100.

[0049] When seawater enters two compensator housings 2 through two water inlets 100 respectively, seawater impurities are filtered out by the filter screens 40 respectively, and the filtrate enters the interior of the underwater control module cylinder body 1 of each compensator housing 2 through the connecting pipes 20, thereby realizing the automatic cleaning of seawater impurities by the filter screens 40.

[0050] Specifically, the underwater control module cylinder body 1 is an SCM cylinder body, and its shape is a hollow cylinder, and the cover plate 10 is arranged on the top end of the underwater control module cylinder body 1.

[0051] As a specific implementation manner, one water inlet groove is respectively arranged on both sides of the cover plate 10, a compensator filter 4 is inlaid and installed on each water inlet groove, and a filter screen 40 is installed on each compensator filter 4;

[0052] The bottom of the compensator filter 4 is provided with a water outlet, the water outlet is butted against the top end of the corresponding connecting pipe 20, the bottom end of the connecting pipe 20 extends into the compensator housing 2, and is communicated with the cavity in the upper part of the underwater control module cylinder body 1.

[0053] In order to improve the effect of impurity cleaning, each water inlet 100 is configured with a set of impurity cleaning mechanism, and the two sets of impurity cleaning mechanisms are respectively arranged on the water inlets 100 on both sides of the cover plate 10 and their corresponding compensator housings 2.

[0054] Specifically, each set of the impurity cleaning mechanism further includes a cleaning brush 50, each cleaning brush 50 is arranged above the corresponding filter screen 40, and can rotate above the filter screen 40 of its corresponding water inlet 100 to brush the impurities at the corresponding water inlet 100 to realize cleaning.

[0055] As a specific implementation manner, each compensator housing 2 is configured with an end cover 21, the compensator housing 2 and its end cover 21 jointly enclose a closed cavity, and the rubber bladder 3 is arranged at the lower part of the corresponding compensator housing 2 so that a cavity is formed in the upper part of the corresponding compensator housing 2.

[0056] In order to limit the two compensator housings 2 to be arranged on both sides inside the underwater control module cylinder body 1, a central pipe 11 is vertically inserted into the interior of the underwater control module cylinder body 1, the central pipe 11 is a cylindrical pipe, and the two compensator housings 2 are arranged inside the underwater control module cylinder body 1 on both sides of the central pipe 11.

[0057] Specifically, each compensator housing 2 is installed and fixed on the central pipe 11 through at least one clamp. More specifically, the shape of the compensator housing 2 is a hollow cylinder, the clamp is an annular structure, and clamps are sleeved on both compensator housings 2 and are fixed on the central pipe 11 through the clamps.

[0058] More specifically, as a specific implementation for realizing the rotation of the cleaning brush 50, each of the cleaning brushes 50 is configured with a set of cleaning brush transmission mechanisms, and each cleaning brush transmission mechanism includes a transmission sleeve 51, a transmission rod 52, and a movable plate 53.

[0059] The movable plate 53 is disposed in the corresponding compensator housing 2 and divides the compensator housing 2 into an upper part and a lower part. The bellows 3 is disposed in the lower part of the compensator housing 2, and the movable plate 53 is disposed in close contact with the bellows 3.

[0060] The top end of the transmission sleeve 51 is fixed to the middle of the bottom surface of the cleaning brush 50, and the transmission sleeve 51 passes through the connecting pipe 20.

[0061] The lower part of the transmission sleeve 51 is sleeved outside the transmission rod 52 through a threaded connection sleeve.

[0062] The bottom end of the transmission rod 52 is fixedly connected to the movable plate 53.

[0063] When the movable plate 53 compresses the bellows 3 downward, the movable plate 53 drives the transmission rod 52 to move downward. The transmission rod 52 drives the transmission sleeve 51 to rotate, and the transmission sleeve 51 further drives the cleaning brush 50 to rotate above the filter screen 40 of the respective water inlet 100, so as to brush the impurities at the corresponding water inlet 100 and further improve the cleaning efficiency.

[0064] In order to ensure that when the transmission rod 52 drives the transmission sleeve 51 to rotate, the movable plate 53 drives the transmission rod 52 to move downward, a telescopic rod 54 is respectively disposed on both sides of the upper part of each compensator housing 2. The top end of each telescopic rod 54 is fixedly connected to the end cover 21, and the bottom end is fixedly connected to the movable plate 53.

[0065] Wherein, silicone oil is pre-filled in both the bellows 3 and the internal part of the underwater control module cylinder 1. A communication pipe 30 is disposed at the bottom end of the bellows 3, and the internal parts of the bellows 3 and the underwater control module cylinder 1 are connected through the communication pipe 30.

[0066] Embodiment 2: A method for using a pressure compensation device of an underwater control system

[0067] Embodiment 2 of the present invention provides a method for using a pressure compensation device of an underwater control system, and this working method includes the following specific steps:

[0068] Step A: Seawater enters the two compensator housings 2 through the two water inlets 100 respectively, and the seawater impurities are filtered out through the filter screens 40 respectively. The filtrate enters the internal part of the underwater control module cylinder 1 of the respective compensator housing 2 through the connecting pipe 20.

[0069] Step B: The filtrate accumulates in the inner cavity above the underwater control module cylinder body 1 of each compensator housing 2, gradually pushing the movable plate 53 downward to compress the rubber bladder 3 until the internal pressure of the underwater control module cylinder body 1 is balanced with the external seawater, thereby achieving the pressure compensation effect.

[0070] Wherein, during the process of the movable plate 53 compressing the rubber bladder 3 downward, the movable plate 53 drives the transmission rod 52 to move downward, the transmission rod 52 drives the transmission sleeve 51 to rotate, and the transmission sleeve 51 further drives the cleaning brush 50 to rotate above the filter screen 40 of the respective water inlet 100, so as to brush and clean the impurities on the cover plate 10 at the corresponding water inlet 100 and above the filter screen 40, avoiding the situation that the pressure compensation cannot be carried out due to the blockage of the filter screen 40 by impurities in the seawater.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pressure compensation device for an underwater control system, characterized in that: include An underwater control module cylinder (1) is provided with a cover plate (10), and a water inlet (100) is provided on each side of the cover plate (10); Two compensator shells (2) are arranged on both sides of the interior of the underwater control module cylinder (1), and each compensator shell (2) is connected to a water inlet (100) via a connecting pipe (20); a bladder (3) is arranged in each compensator shell (2), and each bladder (3) is connected to the interior of the underwater control module cylinder (1) via a connecting pipe (30); A filter screen (40) is disposed on each water inlet (100).

2. The underwater control system pressure compensation device according to claim 1, characterized in that: A water inlet groove is respectively provided on both sides of the cover plate (10), a compensator filter (4) is inlaid and installed on each water inlet groove, and the filter screen (40) is installed on each compensator filter (4); A water outlet is provided at the bottom of the compensator filter (4), and the water outlet is connected to the top end of the corresponding connecting pipe (20). The bottom end of the connecting pipe (20) extends into the compensator housing (2) and is connected to the cavity at the top of the underwater control module cylinder (1).

3. The underwater control system pressure compensation device according to claim 1, characterized in that: Each water inlet (100) is provided with a set of impurity cleaning mechanisms, and two sets of impurity cleaning mechanisms are respectively arranged on the water inlets (100) on both sides of the cover plate (10) and their corresponding compensator housings (2).

4. The underwater control system pressure compensation device according to claim 1, characterized in that: Each set of the impurity cleaning mechanism further comprises a cleaning brush (50), each of the cleaning brushes (50) being arranged above the corresponding filter screen (40) and being capable of rotating above the filter screen (40) of the respective water inlet (100) to brush the impurities at the corresponding water inlet (100) to achieve cleaning.

5. The underwater control system pressure compensation device according to claim 4, characterized in that: Each compensator shell (2) is provided with an end cover (21), and the compensator shell (2) and its end cover (21) together form a closed cavity, and the bladder (3) is arranged at the lower part of the corresponding compensator shell (2) so that the upper part of the corresponding compensator shell (2) forms a cavity.

6. The underwater control system pressure compensation device according to claim 5, characterized in that: Each of the cleaning brushes (50) is equipped with a set of cleaning brush transmission mechanisms. The cleaning brush transmission mechanism comprises a transmission sleeve (51), a transmission rod (52) and a movable plate (53). The movable plate (53) is arranged in the corresponding compensator housing (2) and divides the compensator housing (2) into an upper part and a lower part. The bladder (3) is arranged in the lower part of the compensator housing (2), and the movable plate (53) is arranged close to the bladder (3). The top end of the transmission sleeve (51) is fixed to the middle of the bottom surface of the cleaning brush (50), and the transmission sleeve (51) passes through the connecting pipe (20); The lower part of the transmission sleeve (51) is sleeved on the outer side of the transmission rod (52) through a threaded connection; The bottom end of the transmission rod (52) is fixedly connected to the movable plate (53).

7. The underwater control system pressure compensation device according to claim 6, characterized in that: A telescopic rod (54) is respectively provided on both sides of the upper part of each compensator housing (2); the top end of each telescopic rod (54) is fixedly connected to the end cover (21), and the bottom end is fixedly connected to the movable plate (53).

8. The underwater control system pressure compensation device according to claim 1, characterized in that: The interior of the bladder (3) and the underwater control module cylinder (1) are pre-filled with silicone oil, a connecting pipe (30) is provided at the bottom end of the bladder (3), and the bladder (3) is connected to the interior of the underwater control module cylinder (1) through the connecting pipe (30).

9. A method for using an underwater control system pressure compensation device, using the underwater control system pressure compensation device according to any one of claims 1 to 8, characterized in that: The following steps are involved: Seawater enters the two compensator housings (2) through two water inlets (100), respectively, and is filtered through filter screens (40) to remove seawater impurities. The filtrate enters the interior of the underwater control module cylinder (1) of each compensator housing (2) through a connecting pipe (20); The filtrate is collected in the inner cavity at the upper part of the underwater control module cylinder (1) of each compensator housing (2), gradually pushing the movable plate (53) downward to compress the bladder (3) until the internal pressure of the underwater control module cylinder (1) reaches equilibrium with the external seawater, thereby achieving a pressure compensation effect.

10. The method for using the underwater control system pressure compensation device according to claim 9, characterized in that: When the movable plate (53) compresses the leather bag (3) downward, the movable plate (53) drives the transmission rod (52) to move downward, the transmission rod (52) drives the transmission sleeve (51) to rotate, and the transmission sleeve (51) in turn drives the cleaning brush (50) to rotate above the filter screen (40) of the respective water inlet (100), thereby brushing impurities on the cover plate (10) located above the filter screen (40) at the corresponding water inlet (100) to achieve cleaning, thereby avoiding the situation where the filter screen (40) is blocked by impurities in the seawater and pressure compensation cannot be performed.

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