Deep-sea oil pump cylinder integrated hydraulic machine and application method thereof

Abstract

The application belongs to the technical field of hydraulic devices, and particularly relates to a deep diving oil pump oil cylinder integrated hydraulic machine and an application method thereof. The hydraulic machine comprises a hydraulic oil cylinder, an integrated power unit and a connecting structure. The integrated power unit comprises a pressure-bearing container, a motor pump group, a control valve group and an electric control system. The pressure-bearing container comprises a first chamber and a second chamber separated by a first partition structure. The containing space of the hydraulic oil forms a first communication channel and a second communication channel with the rodless chamber and the rod chamber of the hydraulic oil cylinder respectively. The electric control system controls the flow path and flow area of the hydraulic oil through the control valve group, and provides power for the flow of the hydraulic oil in the communication channel through the motor pump group. The connecting structure connects the hydraulic oil cylinder and the integrated power unit on the corresponding side of the rodless chamber and the rod chamber of the hydraulic oil cylinder respectively. Through the optimization of the spatial distribution and the flow path of the hydraulic oil by the highly integrated structure, the energy efficiency, the maintenance convenience and the reliability of the layered water intake gate of the system are improved.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic device technology, and particularly relates to a deep-sea submersible oil pump and cylinder integrated hydraulic press and its application method. Background Technology

[0002] Water bodies typically form different water layers, which vary in temperature, dissolved oxygen, turbidity, and pollutants. For example, surface water is usually warmer and may be rich in oxygen, while bottom water may be colder, denser, and contain more pollutants. The design of stratified intake gates allows water to be drawn from water layers of different depths. By precisely adjusting the position and opening of the gate, different water layers can be selected for water intake. The hydraulic drive device of the stratified intake gate provides the power to open and close the gate. The position of the gate can usually be adjusted between different depths to ensure that water is drawn from the most suitable water layer.

[0003] Currently, the hydraulic drive units of tiered intake gates have low integration. The decentralized design of motor pumps, control valves, and electrical control systems, while providing some flexibility, presents several problems in practical applications, especially in deep-water environments. For example, the independent distribution of components such as hydraulic tanks, motor pumps, control valves, and electrical control systems occupies a large space, making equipment installation difficult. When these components are dispersed, system failures may require troubleshooting multiple components separately. The complex connections between these components increase the workload of troubleshooting, maintenance, and repair, especially in deep-water environments where the difficulty is further amplified. Furthermore, the transmission of hydraulic oil and the driving of the pumps require long-distance pipelines, which may result in energy loss during transmission.

[0004] In summary, the low integration of hydraulic drive devices leads to problems such as large space occupation, low energy efficiency, and difficult maintenance. These problems are more pronounced in deep water environments. Therefore, providing a more integrated design and intelligent control system has become one of the research directions for improving the performance and reliability of stratified water intake gate systems. Summary of the Invention

[0005] This invention provides a deep-sea submersible oil pump and cylinder integrated hydraulic press and its application method, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: a deep-sea submersible oil pump cylinder integrated hydraulic press is provided, including a hydraulic cylinder, an integrated power unit and a connecting structure, wherein the integrated power unit includes a pressure vessel, a motor pump group, a control valve group and an electrical control system;

[0007] The pressure vessel includes a first chamber and a second chamber separated by a first partition structure, the first chamber and the second chamber being distributed along the length of the hydraulic cylinder; the first chamber provides installation space for the motor pump assembly and a space for containing hydraulic oil, and the second chamber provides installation space for the control valve assembly and the electronic control system;

[0008] The accommodating space forms a first connecting channel and a second connecting channel with the rodless chamber and the rod chamber of the hydraulic cylinder, respectively. The electronic control system controls the flow path and flow area of ​​the hydraulic oil in the different connecting channels through the control valve group, and provides power for the flow of the hydraulic oil in the connecting channels through the motor pump group.

[0009] The connection structure is provided in two sets, which connect the hydraulic cylinder and the integrated power unit to the corresponding sides of the rodless chamber and the rod chamber of the hydraulic cylinder, respectively.

[0010] The first connecting channel and the second connecting channel are distributed within the first chamber, the second chamber, and the connecting structure.

[0011] Furthermore, both the first and second connecting channels include:

[0012] The pipeline constraint section provides a hydraulic oil flow channel through the pipeline, one end of which is connected to the control valve group;

[0013] The hole-constrained section, located within the connecting structure, provides a hydraulic oil flow channel through the hole.

[0014] The two pipe constraint sections corresponding to the first and second connecting channels are respectively connected to the hole constraint sections in the two connecting structures through different chambers in the pressure vessel.

[0015] Furthermore, the control valve assembly is fixedly connected to the first partition structure.

[0016] Furthermore, the motor pump unit is located within the accommodating space and is immersed in the hydraulic oil.

[0017] Furthermore, an oil supply pipe is provided in the second chamber for supplying oil to the accommodating space;

[0018] One end of the oil supply pipe is connected to the control valve assembly, and the other end is connected to the pressure vessel. The oil supply pipe supplies oil through the oil supply port provided on the pressure vessel.

[0019] Furthermore, the pressure vessel is connected to a high-pressure accumulator, which includes a bladder structure disposed within the containment space. The bladder structure buffers the volume difference of the containment space through deformation.

[0020] Furthermore, it also includes a filter, which is immersed in hydraulic oil and connected to the control valve assembly via the first baffle structure.

[0021] Furthermore, a second partition structure is provided in the second chamber, which divides the second chamber into a third chamber, in which the electronic control system is installed.

[0022] Furthermore, the second partition structure is a plate that divides the second chamber into two independent chambers distributed along the length of the hydraulic cylinder, one of which is the third chamber;

[0023] Alternatively, the second partition structure may be a cylindrical structure, separating the second chamber into an independent third chamber.

[0024] This invention also provides an application method for a deep-sea submersible oil pump and cylinder integrated hydraulic press, applicable to the deep-sea submersible oil pump and cylinder integrated hydraulic press as described in any one of the preceding claims, comprising the following steps:

[0025] The two ends of the hydraulic cylinder are respectively connected to the gate body and the gate frame of the tiered water intake gate;

[0026] The electronic control system controls the flow path and flow area of ​​hydraulic oil in the first and second connecting channels through the control valve group, and provides power for the flow of hydraulic oil in the connecting channels through the motor pump group.

[0027] The hydraulic cylinder controls the extension and retraction of the piston rod according to the action signal of the electronic control system and the power provided by the motor pump group, thereby controlling the opening and closing of the door relative to the door frame.

[0028] The present invention also provides a tiered water intake gate, which adopts a deep-sea submersible oil pump cylinder integrated hydraulic press as described in any of the above claims;

[0029] The two ends of the hydraulic cylinder are connected to the gate body and the gate frame of the tiered water intake gate, respectively. The opening and closing of the gate body relative to the gate frame is controlled by the extension and retraction of the piston rod.

[0030] The technical solution of this invention achieves the following technical effects: The deep-sea submersible oil pump and cylinder integrated hydraulic press of this invention optimizes the spatial distribution of the motor pump group, control valve group, and electrical control system in the pressure vessel through a highly integrated structural layout, and optimizes the efficient flow path of hydraulic oil between the rodless chamber and the rod chamber through the distribution path of the first and second connecting channels, thereby improving the system's energy efficiency and maintenance convenience, and thus significantly improving the performance and reliability of the stratified water intake gate in deep water environment; In addition, the intelligent control of the stratified water intake gate is achieved through the coordinated work of the electrical control system and the control valve group, which can accurately adjust the selection of the water intake layer, improving the overall stability and operational accuracy of the stratified water intake gate system. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of the deep-sea submersible oil pump and cylinder integrated hydraulic press in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the internal structure of the pressure vessel in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the internal structure of the first chamber in an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the structure of the first chamber from another angle in an embodiment of the present invention;

[0036] Figure 5 This is a cross-sectional view of the deep-sea submersible oil pump and cylinder integrated hydraulic press in an embodiment of the present invention;

[0037] Figure 6 for Figure 4 Enlarged view of point A in the middle;

[0038] Figure 7 for Figure 4 Enlarged view of point B in the middle;

[0039] Figure 8 This is a schematic diagram of the internal structure of the second chamber in an embodiment of the present invention;

[0040] Figure 9 for Figure 8 Enlarged view of point C.

[0041] Reference numerals: 100, hydraulic cylinder; 110, rod chamber; 120, rodless chamber; 200, integrated power unit; 210, pressure vessel; 211, first partition structure; 212, first chamber; 213, second chamber; 214, second partition structure; 215, third chamber; 220, motor pump assembly; 230, control valve assembly; 231, pipeline; 2311, valve assembly connection end; 2312, orifice connection end; 232, oil supply pipe; 240, electrical control system; 250, filter; 300, connection structure. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] like Figures 1 to 9 The deep-sea submersible oil pump and cylinder integrated hydraulic press shown includes a hydraulic cylinder 100, an integrated power unit 200 and a connecting structure 300. The integrated power unit 200 includes a pressure vessel 210, a motor pump group 220, a control valve group 230 and an electrical control system 240.

[0045] The pressure vessel 210 includes a first chamber 212 and a second chamber 213 separated by a first partition structure 211. The first chamber 212 and the second chamber 213 are distributed along the length of the hydraulic cylinder 100. The first chamber 212 provides installation space for the motor pump assembly 220 and a space for containing hydraulic oil. The second chamber 213 provides installation space for the control valve assembly 230 and the electrical control system 240.

[0046] The accommodating space forms a first connecting channel and a second connecting channel with the rodless chamber 120 and the rod chamber 110 of the hydraulic cylinder 100, respectively. The electronic control system 240 controls the flow path and flow area of ​​the hydraulic oil in the different connecting channels through the control valve group 230, and provides power for the flow of the hydraulic oil in the connecting channels through the motor pump group 220.

[0047] The connection structure 300 is provided in two sets, which connect the hydraulic cylinder 100 and the integrated power unit 200 to the corresponding sides of the rodless chamber 120 and the rod chamber 110 of the hydraulic cylinder 100, respectively.

[0048] The first connecting channel and the second connecting channel are distributed within the first chamber 212, the second chamber 213 and the connecting structure 300.

[0049] The deep-sea submersible oil pump and cylinder integrated hydraulic press of the present invention optimizes the spatial distribution of the motor pump group 220, control valve group 230 and electrical control system 240 in the pressure vessel 210 through a highly integrated structural layout. It also optimizes the efficient flow path of hydraulic oil between the rodless chamber 120 and the rod chamber 110 through the distribution path of the first and second connecting channels, thereby improving the system's energy efficiency and maintenance convenience, and significantly enhancing the performance and reliability of the stratified water intake gate in deep water environments. In addition, the intelligent control of the stratified water intake gate is achieved through the coordinated work of the electrical control system 240 and the control valve group 230, which can accurately adjust the selection of the water intake layer and improve the overall stability and operational accuracy of the stratified water intake gate system.

[0050] It should be noted that in this embodiment, the oil flow path is configured such that the accommodating space and the rodless cavity 120 of the hydraulic cylinder 100 form a first connecting channel, and the accommodating space and the rod cavity 110 of the hydraulic cylinder 100 form a second connecting channel to illustrate the operation of the deep-sea submersible oil pump and cylinder integrated hydraulic press. In other embodiments, the oil flow path can also be configured such that the accommodating space and the rod cavity 110 of the hydraulic cylinder 100 form a first connecting channel, and the accommodating space and the rodless cavity 120 of the hydraulic cylinder 100 form a second connecting channel, depending on the actual oil supply and action requirements. This only adjusts the oil flow method and does not affect the overall integrated structure layout and working process of the system.

[0051] When the deep-sea submersible oil pump and cylinder integrated hydraulic press is working, the motor pump unit 220 provides power to drive the hydraulic oil to flow in the system. The hydraulic oil starts from the receiving space of the first chamber 212 and can enter the rodless chamber 120 of the hydraulic cylinder 100 through the first connecting channel, pushing the piston rod to extend. At the same time, the hydraulic oil returns from the rod chamber 110 to the first chamber 212 through the second connecting channel, completing one working cycle. During the working cycle, the control valve group 230 adjusts the flow path and flow area of ​​the hydraulic oil in different connecting channels according to the instructions of the electronic control system 240, thereby precisely controlling the movement speed and position of the piston rod. The connection structure 300 connects the hydraulic cylinder 100 and the integrated hydraulic press. The power unit 200 provides a fixedly connected base and also forms part of the first and second connecting channels, providing a channel for the flow of hydraulic oil, thereby ensuring the stable operation of the system in deep water environments. The first chamber 212 and the second chamber 213 formed by the first partition structure 211 optimize the space utilization in the pressure vessel 210, and work together with the first and second connecting channels to reduce the length of the hydraulic oil transmission path, reduce energy loss during transmission, and improve the reliability and ease of maintenance of the system. When facing harsh conditions such as high pressure and low temperature in deep water environments, it greatly improves the overall stability and operational accuracy of the stratified water intake gate system.

[0052] Based on the above embodiments, both the first connecting channel and the second connecting channel include:

[0053] The pipeline constraint section provides a hydraulic oil flow channel through pipeline 231, one end of which is connected to the control valve group 230.

[0054] The hole-constrained section, located within the connecting structure 300, provides a hydraulic oil flow channel through the hole.

[0055] The two pipe constraint sections corresponding to the first and second connecting channels are respectively connected to the hole constraint sections in the two connecting structures 300 through different chambers in the pressure vessel 210.

[0056] The first and second connecting channels serve as hydraulic oil flow channels, each consisting of a pipe constraint section in the first chamber 212 and a hole constraint section in the two sets of connecting structures 300. Specifically, taking the first connecting channel as an example, one end of the pipe 231 in the first chamber 212 is connected to the control valve group 230, and the other end is connected to the rodless chamber 120 of the hydraulic cylinder 100 through a hole in the connecting structure 300, thus realizing the flow of hydraulic oil in the first connecting channel and the rodless chamber 120. Similarly, the second connecting channel is connected to the control valve group 230 at one end of the pipe 231 in the second chamber 213, and the other end is connected to the hydraulic cylinder 100 through a hole in the other connecting structure 300. The rod chamber 110 is connected to the hydraulic oil, thus realizing the flow process of hydraulic oil in the second connecting channel and the rod chamber 110. The segmented design of the hydraulic oil circuit not only optimizes the flow path of the hydraulic oil, but also reduces energy loss and failure risk caused by long-distance pipeline connections in deep water environment, and improves the convenience of maintenance. Moreover, the combination of pipeline constraint section and hole constraint section enhances the sealing and pressure resistance of the system, ensuring stable operation in deep water high-pressure environment. During operation, the electrical control system 240 controls the flow path and flow area of ​​hydraulic oil in different connecting channels through the control valve group 230, and provides power for the flow of hydraulic oil in the connecting channels through the motor pump group 220, thereby ensuring the overall operational reliability of the system.

[0057] Based on the above embodiments, the control valve assembly 230 is fixedly connected to the first partition structure 211. The control valve assembly 230 and the first partition structure 211 can be fixedly connected in various ways, such as by bolt connection or welding. The fixed connection not only simplifies the installation process of the control valve assembly 230, but also provides a stable support position for the pipe body connected to the control valve assembly 230 through the first partition structure 211, reducing the loosening or displacement of components caused by water flow impact or pressure changes in deep water environment. In addition, the fixed connection design further optimizes the overall structural compactness of the system, reduces the difficulty of fault diagnosis and maintenance, thereby improving the reliability and service life of the deep-sea oil pump cylinder integrated hydraulic press.

[0058] Based on the above embodiments, the motor pump unit 220 is located within the accommodating space and is immersed in hydraulic oil. The motor pump unit 220 can be installed by means of bracket fixing, slot positioning, or bolt connection. The motor pump unit 220 is directly immersed in hydraulic oil, which not only provides good heat dissipation for the motor pump unit 220, but also reduces wear and extends its service life through the lubrication effect of hydraulic oil. In addition, the hydraulic oil enhances the impact resistance of the motor pump unit 220 immersed in it, enabling it to operate stably in deep water environments, while reducing noise and vibration and improving the overall performance of the system.

[0059] Based on the above embodiment, an oil supply pipe 232 is provided in the second chamber 213 for supplying oil to the accommodating space;

[0060] One end of the oil supply pipe 232 is connected to the control valve group 230, and the other end is connected to the pressure vessel 210. The oil supply pipe 232 supplies oil through the oil supply port provided on the pressure vessel 210.

[0061] By connecting the oil supply pipe 232 in the second chamber 213 to the oil supply port and control valve group 230 located on the pressure vessel 210, oil is supplied to the containment space. In this way, the pressure vessel 210 not only provides an installation position for the end assembly of the oil supply pipe 232 231, but also the oil supply port is directly set on the pressure vessel 210, eliminating the need for additional connecting parts between the oil supply pipe and the oil supply port. This optimizes the hydraulic oil supply path, reduces pressure loss in the oil circuit, and also improves the sealing and reliability of the system. Furthermore, the setting of the oil supply pipe 232 simplifies the system maintenance process, making it easier to replenish or replace hydraulic oil in deep water environments, further improving the system's operational convenience and service life. The oil supply port can be set on the top, side wall, or bottom of the pressure vessel 210, and the specific location can be adjusted according to actual installation requirements. No specific limitation is made here.

[0062] Based on the above embodiments, the pressure vessel 210 is connected to a high-pressure accumulator, which includes a bladder structure disposed within the containment space. The bladder structure buffers the volume difference of the containment space through deformation.

[0063] The high-pressure accumulator buffers the volume difference of the containment space through a bladder structure. Its working principle is as follows: when the hydraulic oil pressure increases, the bladder structure deforms under pressure and stores energy; when the pressure decreases, the bladder structure returns to its original shape and releases energy, thereby maintaining the stability of the system pressure. The bladder structure can be fixed to the inner end face of the pressure vessel 210 through flange connection, threaded connection, etc., which not only improves the energy utilization rate of the system, but also reduces the impact of hydraulic oil pressure fluctuations on the system, and enhances the stability and reliability of the deep-sea submersible oil pump cylinder integrated hydraulic press in a high-pressure environment.

[0064] Based on the above embodiments, a filter is also included. The filter is immersed in the hydraulic oil and connected to the control valve assembly 230 through the first partition structure 211. The function of the filter is to remove impurities from the hydraulic oil, ensuring the cleanliness of the hydraulic system and thus extending the service life of the system. By assembling and connecting the control valve assembly 230 to the first partition structure 211, it can be directly connected to the oil circuit of the control valve assembly 230 fixedly set on the first partition structure 211 through the internal oil passage integrated in the first partition structure 211, forming an integrated filter structure. This optimizes the installation position of the filter, allowing the filter to be directly immersed in the oil for pre-filtration, effectively intercepting impurities from entering the control valve assembly 230, avoiding valve core jamming, and effectively reducing system failures caused by hydraulic oil contamination. Furthermore, in deep-water and high-pressure environments, the integrated design of the filter structure and the first partition structure 211 avoids the risk of sealing failure of the external filter element. During maintenance, only the connection between the first partition structure 211 and the filter needs to be disconnected to replace the filter element, significantly reducing the frequency and difficulty of maintenance in deep-water operations and improving the convenience of system maintenance.

[0065] Based on the above embodiment, a second partition structure 214 is provided in the second chamber 213, which divides the second chamber 213 into a third chamber 215. The third chamber 215 houses the electronic control system 240. The third chamber 215 formed by the second partition structure 214 creates a physical isolation between the electronic control system 240 and the control valve group 230. When there is hydraulic oil leakage in the control valve group 230, it can effectively prevent the electronic control system 240 from being affected. The thermal conductivity of the first partition structure 211 and the second partition structure 214 can both establish a heat dissipation path, so that the heat inside the integrated power unit 200 can be effectively transferred to the external deep water environment. In this embodiment, the setting of the second partition structure 214 can improve the heat dissipation efficiency of the electronic control system 240 and enhance the operational stability of the system.

[0066] Based on the above embodiment, the second partition structure 214 is a plate that divides the second chamber 213 into two independent chambers distributed along the length of the hydraulic cylinder 100, one of which is the third chamber 215.

[0067] Alternatively, the second partition structure 214 may be a cylindrical structure, separating an independent third chamber 215 within the second chamber 213.

[0068] Specifically, when the second partition structure 214 adopts a plate structure, it can be a flat plate or an arc-shaped plate. To improve the strength of the selected plate, auxiliary structures such as reinforcing ribs can be appropriately used to divide the second chamber 213 axially into two independent chambers, which serve as the third chamber 215 to accommodate the electrical control system 240, and as the second chamber 213 to accommodate the control valve assembly 230, respectively. When the second partition structure 214 adopts a cylindrical structure, multiple plates can be welded together to form a cylindrical structure. The outer wall of the cylindrical structure can be connected to the pressure vessel. With the inner walls fitted and spaced, when the spacers are set, the second chamber 213 is radially divided into inner and outer annular spaces. The inner ring serves as the third chamber 215 to house the electrical control system 240. Under this spacer configuration, a silicone buffer layer can be appropriately filled between the outer wall of the cylindrical structure and the pressure vessel 210 to ensure the stability of the cylindrical structure relative to the pressure vessel 210. Alternatively, a multi-layer sidewall structure can be adopted for the cylindrical structure, and an electromagnetic shielding structure can be appropriately added to ensure the stability of signal transmission of the electrical control system 240 in deep water environments.

[0069] This invention also provides an application method for a deep-sea submersible oil pump and cylinder integrated hydraulic press, applicable to the deep-sea submersible oil pump and cylinder integrated hydraulic press as described in any one of the above claims, comprising the following steps:

[0070] Connect the two ends of the hydraulic cylinder 100 to the gate body and the gate frame of the stratified water intake gate, respectively;

[0071] The electronic control system 240 controls the flow path and flow area of ​​hydraulic oil in the first and second connecting channels through the control valve group 230, and provides power for the flow of hydraulic oil in the connecting channels through the motor pump group 220.

[0072] The hydraulic cylinder 100 controls the extension and retraction of the piston rod according to the action signal of the electronic control system 240 and the power provided by the motor pump group 220, thereby controlling the opening and closing of the door relative to the door frame.

[0073] When the deep-sea oil pump and cylinder integrated hydraulic press is working, the hydraulic cylinder is powered by the motor pump group 220 to drive the hydraulic oil to flow in the system. The hydraulic oil starts from the accommodating space of the first chamber 212, enters the rodless chamber 120 of the hydraulic cylinder 100 through the first connecting channel, and pushes the piston rod to extend. At the same time, the hydraulic oil returns from the rod chamber 110 to the first chamber 212 through the second connecting channel, completing one working cycle. During the working cycle, the control valve group 230 adjusts the flow path and flow area of ​​the hydraulic oil in different connecting channels according to the instructions of the electronic control system 240, thereby precisely controlling the movement speed and position of the piston rod, and thus controlling the opening and closing of the door relative to the door frame.

[0074] The present invention also provides a tiered water intake gate, which adopts a deep-sea submersible oil pump cylinder integrated hydraulic press as described above;

[0075] The two ends of the hydraulic cylinder 100 are connected to the gate body and the gate frame of the stratified water intake gate, respectively. The opening and closing of the gate body relative to the gate frame is controlled by the extension and retraction of the piston rod.

[0076] The tiered intake gate is opened and closed using a highly integrated deep-sea submersible oil pump and cylinder integrated hydraulic press. This effectively reduces the assembly space of the power structure on the tiered intake gate. During operation, the control valve group 230, according to the instructions of the electronic control system 240, realizes the extension and retraction of the piston rod of the hydraulic cylinder 100, controls the opening and closing of the gate body relative to the gate frame, and can adjust the flow path and flow area of ​​hydraulic oil in different connecting channels, thereby precisely controlling the movement speed and position of the piston rod. This not only greatly improves the accuracy and stability of gate operation, but also optimizes the system's energy efficiency and maintenance convenience. It is especially suitable for deep-water environments and can effectively cope with harsh conditions such as high pressure and low temperature, improving the overall performance and service life of the tiered intake gate system.

[0077] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deep-sea submersible hydraulic press integrating a pump and cylinder, characterized in that, It includes a hydraulic cylinder, an integrated power unit, and a connecting structure. The integrated power unit includes a pressure vessel, a motor pump assembly, a control valve assembly, and an electrical control system. The pressure vessel includes a first chamber and a second chamber separated by a first partition structure, the first chamber and the second chamber being distributed along the length of the hydraulic cylinder; the first chamber provides installation space for the motor pump assembly and a space for containing hydraulic oil, and the second chamber provides installation space for the control valve assembly and the electronic control system; The accommodating space forms a first connecting channel and a second connecting channel with the rodless chamber and the rod chamber of the hydraulic cylinder, respectively. The electronic control system controls the flow path and flow area of ​​the hydraulic oil in the different connecting channels through the control valve group, and provides power for the flow of the hydraulic oil in the connecting channels through the motor pump group. The connection structure is provided in two sets, which connect the hydraulic cylinder and the integrated power unit to the corresponding sides of the rodless chamber and the rod chamber of the hydraulic cylinder, respectively. The first connecting channel and the second connecting channel are distributed within the first chamber, the second chamber, and the connecting structure; Both the first and second connecting channels include: The pipeline constraint section provides a hydraulic oil flow channel through the pipeline, one end of which is connected to the control valve group; The hole-constrained section, located within the connecting structure, provides a hydraulic oil flow channel through the hole. The two pipe constraint sections corresponding to the first and second connecting channels are respectively connected to the hole constraint sections in the two connecting structures through different chambers in the pressure vessel; The connection structure provides a base for a fixed connection between the hydraulic cylinder and the integrated power unit, and also constitutes part of the first and second connecting channels, providing a channel for the flow of hydraulic oil.

2. The deep-sea submersible oil pump and cylinder integrated hydraulic press according to claim 1, characterized in that, The control valve assembly is fixedly connected to the first partition structure.

3. The deep-sea submersible oil pump and cylinder integrated hydraulic press according to claim 1, characterized in that, The motor pump unit is located within the containment space and is immersed in the hydraulic oil.

4. The deep-sea submersible oil pump and cylinder integrated hydraulic press according to claim 1 or 3, characterized in that, The second chamber is equipped with an oil supply pipe for supplying oil to the accommodating space; One end of the oil supply pipe is connected to the control valve assembly, and the other end is connected to the pressure vessel. The oil supply pipe supplies oil through the oil supply port provided on the pressure vessel.

5. The deep-sea submersible oil pump and cylinder integrated hydraulic press according to claim 1, characterized in that, The pressure vessel is connected to a high-pressure accumulator, which includes a bladder structure disposed within the containment space. The bladder structure buffers the volume difference of the containment space through deformation.

6. The deep-sea submersible oil pump and cylinder integrated hydraulic press according to claim 1, characterized in that, It also includes a filter, which is immersed in hydraulic oil and connected to the control valve assembly via the first baffle structure.

7. The deep-sea submersible oil pump and cylinder integrated hydraulic press according to claim 1, characterized in that, The second chamber is provided with a second partition structure, which divides the second chamber into a third chamber, and the third chamber is where the electronic control system is installed.

8. The deep-sea submersible oil pump and cylinder integrated hydraulic press according to claim 7, characterized in that, The second partition structure is a plate that divides the second chamber into two independent chambers distributed along the length of the hydraulic cylinder, one of which is the third chamber; Alternatively, the second partition structure may be a cylindrical structure, separating the second chamber into an independent third chamber.

9. An application method for a deep-sea submersible oil pump and cylinder integrated hydraulic press, characterized in that, The deep-sea submersible oil pump and cylinder integrated hydraulic press, as described in any one of claims 1 to 8, comprises the following steps: The two ends of the hydraulic cylinder are respectively connected to the gate body and the gate frame of the tiered water intake gate; The electronic control system controls the flow path and flow area of ​​hydraulic oil in the first and second connecting channels through the control valve group, and provides power for the flow of hydraulic oil in the connecting channels through the motor pump group. The hydraulic cylinder controls the extension and retraction of the piston rod according to the action signal of the electronic control system and the power provided by the motor pump group, thereby controlling the opening and closing of the door relative to the door frame.

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