Underwater pressure compensator capable of preventing marine organisms and silt

Abstract

The invention discloses an underwater pressure compensator capable of preventing marine organisms and silt. The underwater pressure compensator comprises a shell, a filtering assembly and a connecting assembly. The shell is provided with a first end and a second end which are oppositely arranged, a cavity is formed in the shell, a compensation assembly is arranged in the cavity, and one end of the compensation assembly can penetrate through the second end; the filtering assembly comprises a first filtering piece, the first filtering piece is connected with the first end, a first filtering hole is formed in the first filtering piece, a concave part is arranged on the side, away from the first end, of the first filtering piece, the first filtering hole is communicated with the concave part, the first filtering piece is provided with a protruding part, and the protruding part is communicated with the first filtering hole. The convex part is located in the concave part, the convex part is provided with a communication channel, and the concave part is communicated with the cavity through the communication channel; the connecting assembly is arranged at the second end, and the end, extending out of the second end, of the compensation assembly is connected with external equipment through the connecting assembly.

Description

Technical Field

[0001] The present application relates to the technical field of drilling equipment, and more specifically, to an underwater pressure compensator for preventing marine organisms and silt. Background Art

[0002] Offshore oil engineering is a challenging and complex field that requires the extraction, transportation and processing of crude oil and natural gas in deep sea waters. Under deep sea conditions, underwater equipment and structures must withstand huge water pressure, which may lead to a variety of problems, one of which is that the performance of underwater equipment is affected by pressure changes.

[0003] Subsea equipment, such as wellhead valves, pipelines, well control systems and various sensors, operate in a high-pressure environment and face constantly changing water pressure. As the depth of the equipment increases, the water pressure increases significantly, which may lead to equipment performance degradation, leakage, structural fatigue and even damage.

[0004] To meet these challenges, subsea pressure compensators have become a key technology in the field of offshore oil engineering. Subsea pressure compensators are key equipment used to maintain pressure balance inside and outside of subsea equipment. It allows equipment to operate safely in high-pressure underwater environments while reducing the risk of leakage and damage.

[0005] Traditional underwater pressure compensators usually offset external water pressure by adjusting the hydraulic pressure of the internal compartment. When the liquid medium filled inside the component that needs pressure balance compensation shrinks in volume under deep-sea pressure, the liquid medium should be quickly replenished through the pressure compensator. On the contrary, when the water depth decreases and the pressure decreases, the excess liquid medium in the component that needs pressure balance compensation can flow back to the pressure compensator. However, in deep-sea engineering, these pressure compensators face erosion problems caused by silt and other solid particles, which may cause their performance to deteriorate. Therefore, in offshore oil engineering, it has become crucial to seek innovative underwater pressure compensator technology to improve reliability, reduce maintenance costs and ensure safe operation of equipment.

[0006] The new generation of underwater pressure compensators needs to have excellent performance in preventing sediment intrusion, maintaining stable pressure in the internal air chamber, and improving the corrosion resistance of materials. These technological innovations will help promote the development of offshore oil engineering, improve the efficiency of oil production platforms and equipment, reduce environmental risks, and bring sustainable benefits to the energy industry.

[0007] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Summary of the invention

[0008] One purpose of the present application is to provide a new technical solution for an underwater pressure compensator that is resistant to marine organisms and silt.

[0009] According to a first aspect of the present application, there is provided an underwater pressure compensator for preventing marine organisms and silt, the underwater pressure compensator comprising a shell, a filter assembly and a connecting assembly; the shell having a first end and a second end arranged opposite to each other, the shell having a cavity therein, a compensating assembly being arranged therein, one end of the compensating assembly being able to pass through the second end; the filter assembly comprising a first filter element, the first filter element being connected to the first end, a first filter hole being provided on the first filter element, a recess being provided on the side of the first filter element facing away from the first end, the first filter hole being connected to the recess, the first filter element being provided with a protrusion, the protrusion being located in the recess, the protrusion being provided with a connecting channel, the recess being connected to the cavity through the connecting channel; the connecting assembly being arranged at the second end, the end of the compensating assembly extending out of the second end being connected to an external device via the connecting assembly.

[0010] Optionally, the height of the protruding portion is smaller than the height of the recessed portion.

[0011] Optionally, a plurality of the first filter holes are provided on the first filter element, and the plurality of the first filter holes are arranged along the circumference of the first filter element.

[0012] Optionally, the first filter assembly includes a top cover, which is disposed on the top of the first filter element and is sealed to the first filter element.

[0013] Optionally, the filter assembly further includes a second filter element, the second filter element is disposed in the compensation assembly, and the second filter element is located at an end of the compensation assembly away from the first end, and the second filter element is connected to the external device.

[0014] Optionally, a plurality of second filter holes are provided on the second filter element, and the plurality of second filter holes are arranged along the axial direction of the second filter element.

[0015] Optionally, the compensation component includes a pressing piece and a compensating piece, the pressing piece and the compensating piece are arranged in the cavity, the pressing piece is arranged at the end of the compensating piece close to the first end, one side of the pressing piece is against the first filter component, and the other side of the pressing piece is against the compensation component; the compensating piece is made of flexible material.

[0016] Optionally, the compensation component also includes a liquid outlet pipe, which is arranged at one end of the compensation piece away from the pressure piece, one end of the liquid outlet pipe is connected to the compensation piece, and the other end of the liquid outlet pipe can extend out of the second end, and the compensation piece is connected to the external device through the liquid outlet pipe.

[0017] Optionally, the connecting component includes a first connecting member and a second connecting member, the first filter component is connected to the first end via the first connecting member, the second connecting member is arranged at the second end, and the compensation component is connected to the external device via the second connecting member.

[0018] Optionally, the second connecting member includes a base plate, a compensator joint and a locking member, the base plate is connected to the second end of the shell, a socket is provided on the base plate, the liquid outlet pipe can pass through the socket, the compensator joint is connected to the liquid outlet pipe, and the locking member can lock the compensator joint.

[0019] In the embodiment of the present application, by providing a filter component, not only can marine organisms, large particles of mud and impurities in the seawater be effectively blocked from entering the shell, but also the recessed portion and the protruding portion cooperate to allow fine impurities such as fine sand to be precipitated and filtered in the recessed portion, thereby effectively reducing fine impurities such as fine sand from entering the compensation component to avoid affecting the compensation effect of the compensation component.

[0020] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0022] Figure 1 is an axonometric diagram of an underwater pressure compensator in an embodiment of the present application;

[0023] Figure 2 is an exploded view of an underwater pressure compensator in an embodiment of the present application;

[0024] Figure 3 is a cross-sectional schematic diagram of an underwater pressure compensator in an embodiment of the present application;

[0025] Figure 4 yes Figure 3 Enlarged schematic diagram of the circled part;

[0026] Figure 5 is an axonometric view of a first filter assembly in an embodiment of the present application;

[0027] Figure 6 is a cross-sectional schematic diagram of a first filter assembly in an embodiment of the present application;

[0028] Figure 7 It is another cross-sectional schematic diagram of the first filter component in the embodiment of the present application.

[0029] Description of reference numerals:

[0030] 1-housing; 11-first end; 12-second end; 13-cavity;

[0031] 2-compensation component; 21-pressing piece; 22-compensation piece; 23-liquid outlet pipe;

[0032] 3-filter assembly; 31-first filter element; 311-first filter hole; 312-recess; 313-protrusion; 3131-circulation channel; 32-second filter element; 321-second filter hole; 33-top cover;

[0033] 4-connection assembly; 41-first connection piece; 42-second connection piece; 421-base plate; 4211-socket; 422-compensator joint; 423-locking piece. DETAILED DESCRIPTION

[0034] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0036] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0037] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0038] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0039] According to one embodiment of the present application, an underwater pressure compensator for preventing marine organisms and silt is provided. The underwater pressure compensator includes a housing 1, a filter assembly 3 and a connecting assembly 4. The housing 1 has a first end 11 and a second end 12 arranged opposite to each other, and a cavity 13 is provided in the housing 1, and a compensation assembly 2 is provided in the cavity 13, and one end of the compensation assembly 2 can pass through the second end 12. The filter assembly 3 includes a first filter element 31, the first filter element 31 is connected to the first end 11, a first filter hole 311 is provided on the first filter element 31, a recessed portion 312 is provided on the side of the first filter element 31 away from the first end 11, and the first filter hole 311 is connected to the recessed portion 312, and the first filter element 31 is provided with a protrusion 313, the protrusion 313 is located in the recessed portion 312, and the protrusion 313 is provided with a connecting channel, and the recessed portion 312 is connected to the cavity 13 through the connecting channel. The connecting component 4 is disposed at the second end 12 , and the end of the compensating component 2 extending out of the second end 12 is connected to an external device through the connecting component 4 .

[0040] like Figures 1 to 3 As shown, the shell 1 is made of plastic. The use of a shell 1 made of plastic can reduce the attachment and breeding of marine organisms 1 on the shell surface. The seawater entering the shell 1 is filtered by the filter assembly 3 to prevent sand in the seawater from accumulating in the shell 1 and causing adverse effects on the compensation effect.

[0041] A connecting assembly 4 is provided at the bottom of the housing 1 , and the housing 1 is connected to an external device via the connecting assembly 4 , so that the pressure compensator performs pressure compensation on the external device.

[0042] like Figures 1 to 3 As shown, the housing 1 has a first end 11 and a second end 12. The first end 11 and the second end 12 are arranged opposite to each other. The first end 11 of the housing 1 is connected to the filter assembly 3, and the second end 12 of the housing 1 is connected to the connection assembly 4. The filter assembly 3 and the connection assembly 4 are arranged at opposite ends of the housing 1.

[0043] like Figures 2 to 3 As shown, the housing 1 is a hollow columnar structure. The housing 1 has a cavity 13 inside, and the compensation component 2 is arranged in the cavity 13. The compensation component 2 is arranged in the cavity 13, which can not only support the compensation component 2 for external protection, but also prevent the compensation component 2 from bursting due to excessive internal pressure of the compensation component 2.

[0044] Of course, in the embodiment of the present application, the housing 1 is not limited to the above structure, and those skilled in the art can configure it according to actual needs. For example, the housing 1 can also be a rectangular parallelepiped, sphere, cube or other structure with a cavity 13 inside, and the cavity 13 inside the housing 1 can be a cylindrical, prismatic or other structure.

[0045] The end of the compensation component 2 away from the first end 11 can pass through the second end 12. The end of the compensation component 2 passes through the second end 12 and is connected to an external device, so that the compensation component 2 is squeezed by the seawater entering the cavity 13, so that the compensation component 2 performs pressure compensation on the external device.

[0046] like Figures 1 to 3 , Figures 5 to 7 As shown, the filter assembly 3 includes a first filter element 31. The first filter element 31 is disposed at the first end 11 and is used to filter the external water source entering the housing 1. The filter holes can block some large particles of sand and other impurities from entering the first filter element 31.

[0047] like Figures 1 to 3 , Figures 5 to 7 As shown, the first filter element 31 is provided with a recessed portion 312. The recessed portion 312 is provided on a side of the first filter element 31 that is away from the housing 1. The recessed portion 312 is a columnar groove opened on the first filter element 31.

[0048] The recessed portion 312 is communicated with the outside, and the first filter element 31 can perform primary filtering on the external water source to prevent large particles of sand and other impurities from entering the recessed portion 312 .

[0049] like Figures 1 to 3 , Figures 5 to 7 As shown, the first filter element 31 is provided with a protrusion 313. The protrusion 313 is provided on the side of the first filter element 31 away from the housing 1. The protrusion 313 is a columnar protrusion provided on the first filter element 31. That is to say, the protrusion 313 is located in the recessed portion 312, and the protrusion 313 cooperates with the recessed portion 312 to form an annular sedimentation groove on the first filter element 31. The external water source with impurities such as silt is initially filtered through the first filter hole 311, and the external water source containing fine impurities such as fine sand after the initial filtration enters the annular sedimentation groove and is filtered twice through the annular sedimentation groove. Sedimentation is carried out in the annular sedimentation groove, so that the water with impurities such as silt entering the annular sedimentation groove is precipitated, thereby reducing the impurities such as silt entering the cavity 13, and reducing the adverse effects of the accumulation of impurities such as silt on the pressure compensator.

[0050] The protrusion 313 is provided with a communication channel, and the recessed portion 312 is connected to the cavity 13 through the communication channel. That is, water with impurities such as mud and sand is precipitated in the annular sedimentation tank and enters the cavity 13 through the communication channel, so that the compensation component 2 is squeezed by the filtered water, so that the compensation component 2 performs pressure compensation on the external device.

[0051] like Figures 2 to 4As shown, the connecting component 4 is arranged at the second end 12, that is, the connecting component 4 is arranged at the end of the housing 1 away from the first filter element 31. The connecting component 4 is arranged at the end of the housing 1 away from the first filter element 31, which not only facilitates the connection of the pressure compensator with external equipment, but also helps to squeeze the compensating component 2 through the filtered seawater, thereby reducing the influence of the deposited silt on the compensating component 2.

[0052] Of course, in the embodiment of the present application, the filter assembly 3 is not limited to the above structure, and those skilled in the art can configure it according to actual needs. For example, a plurality of annular baffles are arranged in the recessed portion 312, and the plurality of baffles are located in the annular sedimentation tank, and the diameter of the annular baffles gradually decreases from the inner wall of the annular sedimentation tank to the center of the annular sedimentation tank.

[0053] In the embodiment of the present application, seawater enters the recessed portion 312 of the first filter element 31 through the first filter hole 311, and the seawater entering the first filter element 31 is precipitated in the recessed portion 312. The precipitated seawater enters the shell 1 through the connecting channel of the protrusion 313, and the compensation component 2 is squeezed by the seawater so that the compensation component 2 performs pressure compensation on the external device.

[0054] By providing the filter component 3, not only can marine organisms, large particles of mud and impurities in the external water source be effectively blocked from entering the shell 1, but also fine impurities such as fine sand can be precipitated and filtered in the recessed portion 312 through the cooperation between the recessed portion 312 and the protruding portion 313, thereby effectively reducing the entry of fine impurities such as fine sand into the compensation component 2 to avoid affecting the compensation effect of the compensation component 2.

[0055] In an example, the height of the protruding portion 313 is smaller than the height of the recessed portion 312 .

[0056] like Figure 2 , Figure 3 , Figures 5 to 7 As shown, the protrusion 313 is a cylindrical boss disposed at the center of the recess 312 .

[0057] The protrusion 313 is provided with a communication channel, the input port of the communication channel is located higher than the first filter hole 311, and the height of the protrusion 313 is less than the height of the recessed portion 312.

[0058] That is, the communication channel of the protrusion 313 is used to connect the recessed portion 312 with the cavity 13. The external water source needs to be precipitated and filtered in the recessed portion 312 before flowing into the cavity 13 through the communication channel.

[0059] The protrusion 313 is located in the recess 312 , and the height of the protrusion 313 is less than the depth of the recess 312 , which is beneficial for sedimentation and filtration of an external water source containing fine sand.

[0060] The first filter hole 311 is for primary filtration, and large particles of sand and other impurities can be blocked through the first filter hole 311 to prevent large particles of sand from entering the recessed portion 312. The water source entering the recessed portion 312 is an external water source containing fine impurities such as fine sand.

[0061] The external water source containing fine sand entering the recessed portion 312 is filtered twice in the recessed portion 312, and fine impurities such as fine sand are precipitated to the bottom of the recessed portion 312. The water level of the water source after precipitation gradually rises. When the water level reaches or even exceeds the protruding portion 313, the water source after precipitation flows to the cavity 13 through the connecting channel.

[0062] Of course, in the embodiment of the present application, the protrusion 313 is not limited to the above structure, and those skilled in the art can configure it according to actual needs. For example, the protrusion 313 can also be prism-shaped.

[0063] In an example, a plurality of first filter holes 311 are disposed on the first filter element 31 , and the plurality of first filter holes 311 are arranged along the circumference of the first filter element 31 .

[0064] like Figure 2 , Figure 3 , Figures 5 to 7 As shown, the first filter element 31 is in the shape of a hollow column. A plurality of first filter holes 311 are provided on the side wall of the first filter element 31 to perform primary filtration on the external water source containing large particles of sand and other impurities.

[0065] A plurality of first filter holes 311 are evenly arranged along the circumferential direction of the first filter element 31 to ensure a stable pressure compensator when external water enters the first filter element 31, and to prevent sedimentation from causing large weight deviations on both sides of the pressure compensator, causing fine sand deposited in the annular sedimentation trough to flow into the cavity 13 through the connecting channel, thereby affecting the use effect of the pressure compensator.

[0066] The plurality of first filter holes 311 are evenly arranged along the axial direction of the first filter element 31 to increase the flow rate of external water entering or discharging from the first filter element 31 and improve the pressure compensation efficiency of the pressure compensator.

[0067] Of course, in the embodiment of the present application, the first filter hole 311 is not limited to the above structure, and those skilled in the art can set it according to actual needs. For example, the first filter hole 311 can be a circular through hole, an elliptical through hole or a polygonal through hole, or a pipe set on the first filter element 31.

[0068] In one example, the first filter assembly 3 includes a top cover 33 , which is disposed on the top of the first filter element 31 , and the top cover 33 is sealed and connected to the first filter element 31 .

[0069] like Figures 1 to 3 , Figures 5 and 6 As shown, the first filter assembly 3 also includes a top cover 33, which is connected to the first filter assembly 3 by screws. The top cover 33 is sealed with the first filter assembly 3 so that the external water source containing large particles of sand and other impurities can only enter the recessed portion 312 through the first filter hole 311, thereby preventing large particles of sand from entering the recessed portion 312.

[0070] Of course, in the embodiment of the present application, the top cover is not limited to the above structure, and those skilled in the art can set it according to actual needs. For example, the first filter assembly 3 and the top cover 33 can also be sealed by interference fit or threaded connection, and the first filter assembly 3 and the top cover 33 can also be an integrally formed structure.

[0071] In one example, the filter assembly 3 further includes a second filter element 32, which is disposed in the compensation assembly 2 and is located at an end of the compensation assembly 2 away from the first end 11, and the second filter element 32 is connected to the external device.

[0072] like Figure 3 to Figure 4 As shown, the second filter element 32 is disposed in the compensation component 2 , and the silicone oil or the like that flows back from the external device into the compensation component 2 can be filtered through the second filter element 32 .

[0073] When the internal pressure of the external device connected to the pressure compensator is too high, the pressure compensator needs to be used to reduce the pressure. During the pressure reduction process, the medium such as silicone oil in the external device flows back into the compensation component 2. The refluxed medium is likely to carry impurities, which may cut or damage the compensation component 2. The second filter 32 can filter the refluxed medium to protect the compensation component 2.

[0074] In an example, a plurality of second filter holes 321 are disposed on the second filter element 32 , and the plurality of second filter holes 321 are arranged along the axial direction of the second filter element 32 .

[0075] like Figure 3 to Figure 4 As shown, the second filter element 32 is a hollow rod with an opening at one end. The open end of the second filter element 32 is communicated with an external device.

[0076] Multiple rows of second filter holes 321 are evenly arranged along the circumference of the second filter element 32. By providing multiple rows of second filter holes 321, the flow rate of the medium of the external device entering or exiting the compensation component 2 can be increased, effectively improving the pressure compensation efficiency of the pressure compensator.

[0077] Of course, in the embodiment of the present application, the second filter hole 321 is not limited to the above structure, and those skilled in the art can set it according to actual needs. For example, the second filter hole 321 can be a circular through hole, an elliptical through hole or a polygonal through hole, or a pipe set on the second filter element 32.

[0078] In one example, the compensation component 2 includes a pressing piece 21 and a compensating piece 22, wherein the pressing piece 21 and the compensating piece 22 are arranged in the cavity 13, the pressing piece 21 is arranged at the end of the compensating piece 22 close to the first end 11, one side of the pressing piece 21 is against the first filter component 3, and the other side of the pressing piece 21 is against the compensation component 2; wherein the compensating piece 22 is made of a flexible material.

[0079] like Figures 2 to 3 , Figure 5 As shown, the pressing member 21 and the compensating member 22 are arranged in the cavity 13 of the housing 1. The pressing member 21 is arranged between the first filter member 31 and the compensating member 22. The top of the pressing member 21 is connected to the first filter member 31, and the bottom of the pressing member 21 is against the top of the compensating member 22.

[0080] The pressing piece 21 is columnar, and the bottom of the pressing piece 21 has an arc groove, which matches the top of the compensating piece 22. The compensating piece 22 is protected from the risk of excessive deformation by the pressing piece 21.

[0081] The compensating member 22 is a rubber bladder filled with the same liquid medium as the external device that needs pressure compensation. The end of the rubber bladder away from the pressing member 21 is connected to the second filter 32. The rubber bladder is connected to the external device through the connecting assembly 4.

[0082] Of course, in the embodiment of the present application, the compensating member 22 is not limited to the above structure, and those skilled in the art can configure it according to actual needs. For example, the compensating member 22 can also be a piston, such as a rubber plug that can slide up and down along the inner wall of the housing 1 or a partition with a sealing ring at the edge.

[0083] The compensating member 22 has an opening at one end. The opening of the compensating member 22 is connected to an external device. The second filter member 32 is a hollow rod with an opening at one end. The open end of the second filter member 32 is connected to the end of the rubber bladder. The second filter member 32 is arranged in the rubber bladder, and the axial direction of the compensating member 22 is the same as the axial direction of the second filter member 32, which can prevent the rubber bladder from being compressed and deformed excessively.

[0084] Of course, in the embodiment of the present application, the second filter element 32 and the compensating element 22 are not limited to the above structure, and those skilled in the art can configure them according to actual needs. For example, the second filter element 32 and the compensating element 22 can also be a hollow spherical structure.

[0085] In one example, the compensation component 2 also includes a liquid outlet pipe 23, which is arranged at an end of the compensation part 22 away from the pressure part 21, one end of the liquid outlet pipe 23 is connected to the compensation part 22, and the other end of the liquid outlet pipe 23 can extend out of the second end 12, and the compensation part 22 is connected to the external device through the liquid outlet pipe 23.

[0086] like Figure 3 to Figure 4 As shown, one end of the liquid outlet pipe 23 is connected to the compensation member 22, and the other end of the liquid outlet pipe 23 extends out of the second end 12 of the housing 1 and is connected to an external device.

[0087] The liquid outlet pipe 23 is used to output or input the medium in the rubber bladder and the external device. The medium flows between the rubber bladder and the external device through the liquid outlet pipe 23, so as to perform pressure compensation on the external device through the pressure compensator.

[0088] In one example, the connecting component 4 includes a first connecting member 41 and a second connecting member 42, the first filter component 3 is connected to the first end 11 through the first connecting member 41, the second connecting member 42 is arranged at the second end 12, and the compensation component 2 is connected to the external device through the second connecting member 42.

[0089] like Figures 2 to 4 As shown, the connection assembly 4 includes a first connection member 41 and a second connection member 42 .

[0090] The first connecting member 41 is used to connect the first filter assembly 3 and the first end 11 of the housing 1. The first connecting member 41 is a compensator plastic gland. The outer wall of the housing 1 near the first end 11 is provided with a sealing groove. The connection between the first connecting member 41 and the housing 1 is provided with a sealing edge. The sealing edge of the first connecting member 41 matches the sealing groove of the housing 1. The first connecting member 41 is sealed and connected to the first end 11 of the housing 1.

[0091] The first connecting member 41 is provided with a plurality of through holes at positions corresponding to the protrusions 313. The through holes correspond to positions of the input ports of the communication channel, so that the external water source after secondary filtration can flow through the circulation channel.

[0092] In one example, the second connecting member 42 includes a base plate 421, a compensator joint 422 and a locking member 423, the base plate 421 is connected to the second end 12 of the shell 1, a socket 4211 is provided on the base plate 421, the liquid outlet pipe 23 can pass through the socket 4211, the compensator joint 422 is connected to the liquid outlet pipe 23, and the locking member 423 can lock the compensator joint 422.

[0093] like Figures 2 to 4As shown, the second connecting component 4 is disposed at the second end 12 of the housing 1 , and the second connecting member 42 is used to connect the compensation component 2 and an external device.

[0094] The second connection assembly 4 includes a base plate 421 , a compensator joint 422 and a locking member 423 .

[0095] The bottom plate 421 is in the shape of a circular plate, and a boss is provided on the upper surface of the bottom plate 421, and the boss is embedded in the second end 12 of the housing 1. The second end 12 of the housing 1 is sealed by the bottom plate 421. A plug hole 4211 is provided on the bottom plate 421, and the plug hole 4211 corresponds to the position of the liquid outlet pipe 23. One end of the liquid outlet pipe 23 is connected to the rubber bladder, and the other end passes through the plug hole 4211 and is connected to the external device through the compensator joint 422.

[0096] The locking member 423 is a locking nut, which is used to connect the compensator joint 422 to the liquid outlet pipe 23, so as to prevent the compensator joint 422 from falling off during use, thereby affecting the use effect.

[0097] Of course, in the embodiment of the present application, the second connecting member 42 is not limited to the above structure, and those skilled in the art can configure it according to actual needs. For example, the bottom plate 421 is threadedly connected to the housing 1.

[0098] In an embodiment of the present application, the underwater pressure compensator is installed on the top of the underwater equipment that needs pressure compensation, wherein the top cover 33 is partially exposed to the seawater and is sealed with the underwater equipment by a rubber sealing ring, and the bottom plate 421 is inside the underwater equipment and is isolated from the seawater in the underwater pressure compensator by a rubber sealing ring.

[0099] The underwater pressure compensator cover is made of anti-marine biological material (ie plastic) and has a flat plate design (ie the recessed portion 312 matches the protruding portion 313) to prevent marine organisms from attaching and mud and sand from entering the interior of the underwater pressure compensator.

[0100] On the top of the compensating member 22, there is a pressing member 21, which is used to protect the compensating member 22 of the water pressure compensator to prevent the compensating member 22 from excessive deformation and increase the compensating member 22's ability to resist internal pressure. The compensating member 22 is a rubber bladder, and the pressing member 21 is a plastic bladder.

[0101] A second filter element 32 in the shape of a hollow rod is arranged inside the compensating element 22 to prevent the compensating element 22 from being over-compressed, deformed, and folded, thereby damaging the compensating element 22. The second filter element 32 is an anti-compression rod.

[0102] The compensating member 22 and the bottom plate 421 are firmly fixed to each other by two locking nuts. A sealing groove is provided at the connection between the compensating member 22 and the bottom plate 421, and a rubber sealing ring is used for sealing.

[0103] In the embodiment of the present application, the housing 1 of the underwater pressure compensator is used to accommodate the filter assembly 2, the compensation assembly 2 and seawater. The compensation assembly 2 is installed inside the housing 1 to establish a pressure balance relationship between the seawater and the underwater product structure.

[0104] The pressure piece 21 is installed on the upper part of the compensating piece 22 to protect the pressure compensating piece 22 and prevent the compensating piece 22 from excessive deformation.

[0105] The locking nut is installed at the connection between the compensating member 22 and the bottom plate 421 to fix the compensating member 22. The first filter 31 is installed on the upper part of the compensating assembly 2 to filter the sediment.

[0106] The first connecting member 41 is installed at the lower part of the compensating member 22 , and the first connecting member 41 is connected to the compensating member 22 by bolts.

[0107] The compensating member 22 and the bottom plate 421 are fixed and locked by two locking nuts.

[0108] The housing 1 is provided with two layers of sealing rings for mounting on external equipment and providing sealing during installation. The housing 1 constitutes the external structure of the container, provides support for other key components, and ensures the integrity of the container.

[0109] The first filter element 31, the top cover 33 and the bottom plate 421 are tightly combined with the shell 1 to form the basic external structure of the container to protect the internal components from the influence of the external environment.

[0110] The pressing piece 21 is located on top of the compensating piece 22, and its purpose is to protect the bladder from excessive deformation, thereby extending its service life.

[0111] The locking nut is installed at the connection between the compensating member 22 and the bottom plate 421 to firmly fix the compensating member 22 to ensure that it will not accidentally loosen.

[0112] The first filter element 31 is located at the top of the housing 1 and connected to the top cover 33 by bolts. It has a first filter hole 311 and a recessed portion 312 for filtering mud and sand to prevent the mud and sand from entering the housing 1 and potentially damaging the compensation element 22 .

[0113] The top cover 33, the first filter element 31, the housing 1 and the bottom plate 421 ensure that the container is completely sealed to cope with the challenges of the high-pressure underwater environment.

[0114] By filling silicone oil and other materials into the external docking port, pressure balance with external equipment can be achieved, further ensuring the stable operation of the equipment in a high-pressure underwater environment.

[0115] A compensating member 22 is provided inside the housing 1. The compensating member 22 is connected to an external device that requires pressure compensation underwater through a liquid outlet pipe 23. The compensating member 22 is filled with the same liquid medium as that filled inside the deep-sea device that requires pressure compensation. A pressing member 21 is installed on the upper part of the compensating member 22 to prevent the compensating member 22 from excessive deformation.

[0116] When the underwater production equipment enters the deep sea environment or rises to different depths, the external water source will enter the recessed part 312 through the first filter hole 311, and the external water source will enter the interior of the housing 1 through the circulation channel 3131 through the cooperation between the recessed part 312 and the protruding part 313. As the depth of the underwater production equipment submerged in the sea water changes, the water pressure will be transmitted to the underwater pressure compensator. Seawater enters the recessed part 312 through the first filter hole 311, and flows to the cavity 13 through the circulation channel 3131 of the protruding part 313. The water pressure will squeeze the compensating part 22, thereby discharging the silicone oil inside the compensating part 22 through the liquid outlet pipe 23 to achieve pressure balance, which helps to reduce the stress on the equipment components and ensure the safe and reliable operation of the equipment.

[0117] The equipment installation process of the present application is simple to operate, the scheme is reasonable and reliable, and the structure is stable, and can be applied in the field of offshore oil engineering.

[0118] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. An underwater pressure compensator for preventing marine organisms and silt, characterized in that: include: A shell (1), the shell (1) having a first end (11) and a second end (12) arranged opposite to each other, the shell (1) having a cavity (13) therein, a compensation component (2) being arranged in the cavity (13), and one end of the compensation component (2) being able to pass through the second end (12); A filter assembly (3), the filter assembly (3) comprising a first filter element (31), the first filter element (31) being connected to the first end (11), a first filter hole (311) being provided on the first filter element (31), a recessed portion (312) being provided on a side of the first filter element (31) away from the first end (11), the first filter hole (311) being communicated with the recessed portion (312), the first filter element (31) being provided with a protruding portion (313), the protruding portion (313) being located in the recessed portion (312), the protruding portion (313) being provided with a communicating channel, the recessed portion (312) being communicated with the cavity (13) through the communicating channel; A connecting component (4), wherein the connecting component (4) is arranged at the second end (12), and the end of the compensation component (2) extending out of the second end (12) is connected to an external device through the connecting component (4).

2. The underwater pressure compensator for preventing marine organisms and silt according to claim 1 is characterized in that: The height of the protruding portion (313) is smaller than the height of the recessed portion (312).

3. The underwater pressure compensator for preventing marine organisms and silt according to claim 1 is characterized in that: The first filter element (31) is provided with a plurality of the first filter holes (311), and the plurality of the first filter holes (311) are arranged along the circumference of the first filter element (31).

4. The underwater pressure compensator for preventing marine organisms and silt according to claim 1 is characterized in that: The first filter assembly (3) comprises a top cover (33), wherein the top cover (33) is arranged on the top of the first filter element (31), and the top cover (33) is sealedly connected to the first filter element (31).

5. The underwater pressure compensator for preventing marine organisms and silt according to claim 1 is characterized in that: The filter assembly (3) further comprises a second filter element (32), wherein the second filter element (32) is arranged in the compensation assembly (2), and the second filter element (32) is located at an end of the compensation assembly (2) away from the first end (11), and the second filter element (32) is connected to the external device.

6. The underwater pressure compensator for preventing marine organisms and silt according to claim 5 is characterized in that: The second filter element (32) is provided with a plurality of second filter holes (321), and the plurality of second filter holes (321) are arranged along the axial direction of the second filter element (32).

7. The underwater pressure compensator for preventing marine organisms and silt according to claim 6 is characterized in that: The compensating component (2) comprises a pressing piece (21) and a compensating piece (22); the pressing piece (21) and the compensating piece (22) are arranged in the cavity (13); the pressing piece (21) is arranged at an end of the compensating piece (22) close to the first end (11); one side of the pressing piece (21) abuts against the first filter component (3), and the other side of the pressing piece (21) abuts against the compensating component (2); Wherein, the compensating member (22) is made of flexible material.

8. The underwater pressure compensator for preventing marine organisms and silt according to claim 7 is characterized in that: The compensation component (2) further comprises a liquid outlet pipe (23), wherein the liquid outlet pipe (23) is arranged at an end of the compensation component (22) away from the pressure component (21), one end of the liquid outlet pipe (23) is connected to the compensation component (22), and the other end of the liquid outlet pipe (23) can extend out of the second end (12), and the compensation component (22) is connected to the external device via the liquid outlet pipe (23).

9. The underwater pressure compensator for preventing marine organisms and silt according to claim 8 is characterized in that: The connecting component (4) comprises a first connecting member (41) and a second connecting member (42); the first filter component (3) is connected to the first end (11) via the first connecting member (41); the second connecting member (42) is arranged at the second end (12); and the compensation component (2) is connected to the external device via the second connecting member (42).

10. The underwater pressure compensator for preventing marine organisms and silt according to claim 9 is characterized in that: The second connecting member (42) comprises a base plate (421), a compensator joint (422) and a locking member (423); the base plate (421) is connected to the second end (12) of the shell (1); a plug hole (4211) is provided on the base plate (421); the liquid outlet pipe (23) can pass through the plug hole (4211); the compensator joint (422) is connected to the liquid outlet pipe (23); and the locking member (423) can lock the compensator joint (422).

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