Bidirectional water-stopping hydraulic centralized control gate and hydraulic control system

Abstract

The application provides a bidirectional water-stopping hydraulic centralized control gate and a hydraulic control system, the gate comprising a gate plate, an eccentric flange, a hydraulic cylinder and a connecting piece; the gate plate is hingedly connected to the top of the eccentric flange in a rotatable manner through the connecting piece; the two ends of the hydraulic cylinder are connected to the gate plate and the inner side of the base through connecting pieces respectively; the gate plate is driven to move under the action of the hydraulic cylinder, thereby realizing the opening and closing of the gate; wherein the top of the eccentric flange is provided with a bidirectional sealing piece; the bidirectional water-stopping hydraulic centralized control gate and the hydraulic control system can adapt to harsh environments in splash zones, have the characteristics of high corrosion resistance, high bearing alternating impact resistance, zero leakage sealing, precise automatic control and long-term stable operation.

Description

Technical Field

[0001] This invention relates to the field of marine engineering equipment technology, and more specifically, to a bidirectional water-stopping hydraulic centralized control gate and hydraulic control system adapted to the harsh marine environment of the splash zone, resistant to corrosion and high-load alternating impact. Background Technology

[0002] Currently, seawater test pools are core facilities for marine engineering-related experiments, and gates are key components for controlling and sealing the pool's water flow. The splash zone, as one of the harshest areas in the marine environment, is characterized by alternating wet and dry conditions, alternating wave impacts, and high salt spray corrosion, placing extremely high demands on the corrosion resistance and impact bearing capacity of the gates. Currently, most commonly used pool gates in the industry are made of ordinary metal materials or undergo conventional anti-corrosion treatments. Opening and closing methods are mainly manual or simple mechanical control, and the water-stopping structure is unidirectional. Such gates cannot adapt to the harsh conditions of the splash zone, and especially lack bidirectional water-stopping structure designs that also possess high load-bearing alternating impact resistance.

[0003] In the relevant existing technologies, although some gates adopt hydraulic drive, the materials used in the gates cannot adapt to the harsh environment of the seawater splash zone, and are easily affected by high corrosion and alternating impact in this environment, which reduces the stability of operation and makes it difficult to achieve long-term stable operation.

[0004] Among them, the gates in the existing technology cannot adapt to the harsh environment of the seawater splash zone, which is also reflected in the following aspects: (1) Poor corrosion resistance: Ordinary metal materials cannot adapt to the harsh corrosion environment of high salt and alternating dry and wet conditions in the splash zone. They are prone to rust and aging, have a short service life (usually less than 5 years), and have a high equipment maintenance frequency and high overall cost.

[0005] (2) Insufficient sealing performance: Traditional one-way water-stopping structure is difficult to meet the two-way sealing requirements inside and outside the pool. For example, when the water level in the pool rises to a high level during high tide, the one-way water-stopping structure cannot effectively maintain the water level in the pool and is difficult to meet the actual functional requirements.

[0006] (3) Low control efficiency: There is a lack of centralized and automated control methods. Multiple gates need to be operated separately, resulting in poor synchronization and cumbersome operation. The core problem is that seawater corrosion can easily damage control-related components such as sensors, control valves, and connectors. In addition, the splash zone is a dangerous water area, and manual operation is extremely risky. Remote automatic control cannot be achieved under extreme conditions, making it difficult to ensure long-term stable automated operation and failing to meet the high precision and high stability requirements of scientific research, aquaculture and other scenarios.

[0007] (4) Insufficient resistance to high load alternating impact: No special design was made for the alternating impact load of waves in the splash zone. The safety factor of key components is low and the structural strength is insufficient. Long-term use is prone to structural fatigue, cracking, deformation and other problems, and cannot adapt to the harsh working conditions of the splash zone.

[0008] Therefore, it is of great significance to study how to improve and optimize the structure of the gate so that it can adapt to the harsh marine environment of the splash zone.

[0009] Patent CN108867564A discloses a hydraulically operated spillway gate and gate system, including a gate panel, a hydraulic unit, and a support. The gate panel is connected to the support and can rotate relative to the support. The support is used to support the gate panel. The hydraulic unit is used to drive the lower end of the gate panel to open or close. The gate panel includes a first pressure-bearing surface and a second pressure-bearing surface, which are respectively used for the upstream and downstream of the corresponding channel. A sealing strip is provided at the edge of the first pressure-bearing surface. The sealing strip is used to achieve sealing when the gate panel is closed. It can be used for municipal drainage projects and has the characteristics of compact structure, convenient installation, and good sealing performance. However, due to its structural design, it cannot be used in the harsh marine environment of the splash zone. Summary of the Invention

[0010] In view of this, the present invention aims to propose a bidirectional water-stopping hydraulic centralized control gate and hydraulic control system to solve the problems existing in the prior art, such as the inability of existing seawater test pool gates to adapt to the harsh marine environment of the splash zone, poor corrosion resistance, insufficient resistance to high load-bearing alternating impact, poor bidirectional sealing effect, low level of automation control, and weak structural stability. In order to achieve the characteristics of adapting to the harsh environment of the splash zone, high corrosion resistance, resistance to high load-bearing alternating impact, zero leakage sealing, precise automation control, and long-term stable operation.

[0011] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0012] This invention relates to a bidirectional water-stopping hydraulic centralized control gate and a hydraulic control system. The bidirectional water-stopping hydraulic centralized control gate includes a gate panel, an eccentric flange, a hydraulic cylinder, and connecting parts. The gate panel is hinged to the top of the eccentric flange in a rotatable manner through the connecting parts. The two ends of the hydraulic cylinder are respectively connected to the inner side of the gate panel and the base through the connecting parts. Under the action of the hydraulic cylinder, the gate panel is driven to move, thereby realizing the opening and closing of the gate. The top of the eccentric flange is provided with a bidirectional sealing element.

[0013] Furthermore, the door panel includes a main cover plate and a side plate; the top of the main cover plate is connected to one end of the side plate; the inner side of the main cover plate is rotatably connected to a hydraulic cylinder via a connector; the end of the side plate away from the main cover plate is rotatably connected to the top of an eccentric flange via a connector.

[0014] Furthermore, the side plate includes a first side plate and a second side plate; one end of the first side plate is connected to the top of the main cover plate, and the other end of the first side plate is connected to the connector in a movable manner through the second side plate.

[0015] Furthermore, there is a certain angle between the first side panel and the second side panel; the angle ranges from 90° to 180°.

[0016] Furthermore, the door panel also includes horizontal and vertical ribs; the horizontal and vertical ribs are staggered; both the horizontal and vertical ribs are located on the outer side of the door panel.

[0017] Furthermore, the horizontal and vertical reinforcing bars are connected to the top of the door panel by concrete pouring.

[0018] Furthermore, the eccentric flange includes a flange seat and a flange opening; the flange seat is connected to the base; the flange opening is located on top of the flange seat, and a bidirectional seal is provided on the top of the flange opening, with the top of the bidirectional seal either fitting or separating from the door panel; a connector is provided on the outside of the flange opening; and a hydraulic cylinder is movably installed inside the flange opening.

[0019] Furthermore, a water passage hole is formed on the inner side of the eccentric flange, and the opening of the water passage hole is rounded to reduce the alternating load caused by water flow impact.

[0020] A hydraulic control system, the system including the aforementioned bidirectional water-stopping hydraulic centralized control gate, the gate being installed in the system.

[0021] Furthermore, the system also includes a hydraulic pump, a control valve assembly, and sensors; the hydraulic pump is connected to the corresponding gate through the control valve assembly; the sensors are connected to the hydraulic pump and the control valve assembly respectively.

[0022] Compared with the prior art, the bidirectional water-stopping hydraulic centralized control gate and hydraulic control system of the present invention have the following beneficial effects:

[0023] By configuring the gates within the system, it can adapt to harsh environments such as splash zones, and features high corrosion resistance, resistance to high-load alternating impacts, zero-leakage sealing, precise automated control, and long-term stable operation. Specifically, it achieves a significant improvement in control efficiency: multiple gates can be opened and closed synchronously through centralized touchscreen control, increasing operational efficiency by more than 3 times compared to manual / simple mechanical control, with a linkage error of ≤0.5s; it supports remote and automatic operation, with stable automated operation, effectively handling various extreme working conditions and mitigating on-site operational safety risks.

[0024] Ensuring protection in multiple scenarios and high promotional value: Relying on the gate's precise water flow control, bidirectional sealing performance, and splash zone adaptability, it can achieve multi-dimensional water protection and is widely applicable to various splash zone application scenarios such as scientific research, aquaculture, seawater desalination, coastal power plants, and coastal landscape areas. It can be replicated and applied to the gate modification of other marine engineering projects in splash zones, and has broad market application prospects.

[0025] Significant multi-dimensional water protection effects are achieved: First, the control of *Ulva prolifera* and harmful algae. Addressing the annual "green tide" disaster in the Yellow Sea region from June to September, the system can quickly close gates to form a tight barrier, effectively preventing *Ulva prolifera* from entering core areas such as experimental ponds and aquaculture zones. This avoids the rapid death of *Ulva prolifera* within 3 days of its entry, preventing the release of algal humus, sulfides, organic acids, and algal toxins, which can lead to pH imbalance, a sharp drop in dissolved oxygen, and consequently, distorted research data, disease and death of aquatic organisms, and increased aquaculture costs. Second, the control of marine oil spills. In the event of an oil spill in the surrounding waters, the system can quickly close gates to form a sealed barrier, preventing oil from entering various sensitive areas, preventing water pollution and harm to marine life, and reducing the workload and cost of oil spill cleanup. Third, the control of winter seawater turbidity. Addressing the issue of winter seawater turbidity along the Qingdao coast, the system can remotely control and quickly close gates to prevent suspended sediment and fine gravel from entering, avoiding blockage of water passages, equipment wear, and water pollution, ensuring the continuous and stable conduct of scientific research experiments. Attached Figure Description

[0026] The accompanying drawings, which constitute a part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1a A first-person view schematic diagram of the overall installation structure of the water passage gate;

[0028] Figure 1b A second-view schematic diagram of the overall installation structure of the water passage gate;

[0029] Figure 1c A third-person perspective schematic diagram of the overall installation structure of the water passage gate;

[0030] Figure 2 This is a schematic diagram of the overall framework of the hydraulic centralized control system;

[0031] Figure 3 This is a schematic diagram of the cable layout within the system;

[0032] Figure 4a This is a schematic diagram of a water-filled empty gate.

[0033] Figure 4b This is a schematic diagram of a water-passing empty gate.

[0034] Figure 5 This is a schematic diagram of the integrated control device for the equipment.

[0035] Figure 6a A first-person view of the experimental pool during the green tide disaster season before the installation of this gate;

[0036] Figure 6b A second-view diagram showing the condition of the experimental pool during the green tide disaster season before the installation of this gate;

[0037] Figure 6c A schematic diagram showing the condition of the experimental pool during the green tide disaster season after the installation of this gate;

[0038] Figure 7 A schematic diagram of the test pool conditions under turbid sea conditions before and after the installation of the gate of this application.

[0039] Explanation of reference numerals in the attached drawings: 1. Door panel; 11. Main cover plate; 12. Side plate; 121. First through hole; 122. Side plate 1; 123. Side plate 2; 13. Horizontal rib; 14. Longitudinal rib; 2. Eccentric flange; 21. Flange seat; 22. Flange opening; 3. Hydraulic cylinder; 31. Second through hole; 32. Third through hole; 4. Connecting piece; 40. Pin; 41. Fastening plate; 411. Mounting hole; 42. Connecting piece; 43. 44. Connecting two parts; 5. Base; 6. Two-way seal; 7. Electrical control cabinet; 70. Touch screen; 71. Hydraulic pump; 72. Control valve group; 721. Solenoid valve coil 1; 722. Solenoid valve coil 2; 723. Two-position two-way solenoid valve; 724. Check valve; 725. Quick connector; 73. Sensor; 731. Pressure sensor; 732. Electrical contact level gauge; 733. Flow meter. Detailed Implementation

[0040] The inventive concepts of this disclosure will be described below using terminology commonly used by those skilled in the art to communicate the essence of their work to others skilled in the art. However, these inventive concepts may be embodied in many different forms and should not be construed as limited to the embodiments described herein.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0042] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0044] The core flaws in the existing gate design lie in the failure to fully consider the harsh marine environment of the splash zone: First, the material selection lacks specificity, failing to use specialized materials suitable for the alternating wet and dry corrosion and alternating impact resistance of the splash zone; second, the water-stopping structure design does not balance the stress logic of the bidirectional seal, resulting in insufficient sealing reliability; third, the control scheme does not consider the linkage requirements of multiple gates, lacks a centralized control mechanism, and fails to address the pain point of component damage caused by seawater corrosion, limiting the improvement of automation control level; fourth, the structural design does not take into account the high load-bearing alternating impact load of the splash zone, the safety factor and structural strength of key components do not meet the working condition requirements, and the adaptability of the installation process to the working conditions is insufficient, resulting in poor structural stability and susceptibility to fatigue damage; fifth, it does not consider the customized requirements of core application scenarios such as seawater test pools, resulting in insufficient overall equipment adaptability.

[0045] To address the problems of existing seawater test pool gates, such as inability to adapt to the harsh marine environment of the splash zone, poor corrosion resistance, insufficient resistance to high-load alternating impacts, poor bidirectional sealing effect, low level of automation control, and weak structural stability, this embodiment proposes a bidirectional water-stopping hydraulic centralized control gate and its hydraulic control system. The bidirectional water-stopping hydraulic centralized control gate includes a gate plate 1, an eccentric flange 2, a hydraulic cylinder 3, and a connecting piece 4. The gate plate 1 is hinged to the top of the eccentric flange 2 via the connecting piece 4 in a rotatable manner. The two ends of the hydraulic cylinder 3 are respectively connected to the inner sides of the gate plate 1 and the base 5 via the connecting piece 4. Under the action of the hydraulic cylinder 3, the gate plate 1 is moved, thereby realizing the opening and closing of the gate. A bidirectional sealing piece 6 is provided on the top of the eccentric flange 2 to achieve bidirectional water-stopping effect of the gate and improve its sealing performance. The bidirectional sealing element 6 serves as the water-stopping structure of the gate. It adopts a bidirectional water-stopping structure within the pool. The bidirectional sealing element 6 is precisely fitted to the contact surface of the gate, which can achieve uniform sealing pressure, realize bidirectional zero leakage sealing, and ensure test accuracy.

[0046] The system's gate design allows it to adapt to harsh splash zones and features high corrosion resistance, resistance to high-load alternating impacts, zero-leakage sealing, precise automated control, and long-term stable operation. The bidirectional sealing element 6 ensures high sealing reliability; in particular, the bidirectional water-stopping structure fundamentally solves the problem of water leakage, achieving zero-leakage sealing both inside and outside the pool, thus guaranteeing the accuracy of scientific research experiments.

[0047] The door panel 1 includes a main cover plate 11 and a side panel 12. The top of the main cover plate 11 is connected to one end of the side panel 12. The inner side of the main cover plate 11 is rotatably connected to the hydraulic cylinder 3 via a connector 4. The end of the side panel 12 away from the main cover plate 11 is rotatably connected to the top of the eccentric flange 2 via a connector 4. The main cover plate 11 is cylindrical. A first through hole 121 is provided on the side of the side panel 12 away from the main cover plate 11, and the first through hole 121 extends through the side panel 12 from left to right. Specifically, the side panel 12 includes a side plate 122 and a side plate 123. One end of the side plate 122 is connected to the top of the main cover plate 11, and the other end of the side plate 122 is movably connected to the connector 4 via the side plate 123. The side plate 122 and the side plate 123 have a certain included angle. The included angle is obtuse, and its value ranges from 90° to 180°. At least one side plate 12 is provided. Preferably, two side plates 12 are provided. The two side plates 12 are arranged in parallel. Both the main cover plate 11 and the side plates 12 are made of TA2 titanium alloy.

[0048] The coordinated design of the main cover plate 11 and side plate 12 ensures a tight fit between the gate plate 1 and the eccentric flange 2, while also enhancing the strength and rigidity of the gate plate 1, thus guaranteeing the overall structural stability and reliability of the gate. It also significantly improves adaptability to the splash zone: using TA2 titanium alloy material combined with an anti-alternating impact structural design, the equipment can precisely adapt to the harsh marine environment of the splash zone, withstanding both alternating wet and dry conditions and high salt spray corrosion, while resisting high-load alternating impact loads, avoiding structural fatigue and corrosion damage, and addressing the industry pain point of equipment failure in the splash zone. Furthermore, it significantly improves corrosion resistance: the gate body has a service life of ≥20 years, and the sill and embedded parts have a service life of ≥30 years, reducing maintenance costs by more than 60% compared to existing gates made of ordinary materials, eliminating the need for frequent parts replacement.

[0049] The door panel 1 also includes horizontal ribs 13 and vertical ribs 14. The horizontal ribs 13 and vertical ribs 14 are staggered. Both the horizontal ribs 13 and vertical ribs 14 are located on the outer side of the door cover plate 11. At least one horizontal rib 13 and one vertical rib 14 are provided. The spacing between different horizontal ribs 13 or vertical ribs 14 is consistent. The ends of the two side plates 12 facing the main cover plate 11 are connected to the vertical ribs 14 of the main cover plate 11. The horizontal ribs 13 are made of TA2 titanium alloy. In this embodiment, the horizontal ribs 13 and vertical ribs 14 are connected to the top of the door panel 1 by concrete pouring.

[0050] The coordinated arrangement of horizontal ribs 13 and vertical ribs 14 enhances the overall structural rigidity of the door panel 1 and ensures excellent resistance to high-load alternating impacts: the safety factor of key components is ≥5, the structural design is fully adapted to alternating impact loads, and the equipment operates without structural fatigue, cracking, or deformation issues during long-term operation, significantly improving operational stability. Furthermore, the use of TA2 titanium alloy rebar anchoring + concrete pouring technology, with precise matching between the distribution of vertical ribs 14 and the eccentric flange 2, and the concrete pouring area covering the fixed area of ​​the vertical ribs 14, improves installation stability, enhances the overall structure's resistance to alternating impacts, and prevents loosening or deformation issues during long-term operation.

[0051] The eccentric flange 2 includes a flange seat 21 and a flange opening 22. The flange seat 21 is connected to the base 5. The flange opening 22 is located on top of the flange seat 21, and a bidirectional sealing element 6 is provided on the top of the flange opening 22. The top of the bidirectional sealing element 6 is either in contact with or separate from the gate plate 1. A connecting element 4 is provided on the outside of the flange opening 22. The hydraulic cylinder 3 is movably installed inside the flange opening 22. The eccentric flange 2 is made of TA2 titanium alloy. The eccentric flange 2 serves as the basic structure of the gate. The dimensions of the eccentric flange 2 are 620×320mm, and the eccentric flange 2 is a welded structure. A water passage hole is formed on the inner side of the eccentric flange 2. The diameter of the water passage hole of the gate is 320±20mm, which can adapt to different water flow adjustment requirements. The opening of the water passage hole is rounded to reduce the alternating load caused by water flow impact. The opening of the flange opening 22 is inclined from back to front. The angle between the top of the flange opening 22 and the flange seat 21 is an acute angle. It can be used to optimize the stress on the eccentric flange 2 and improve the equipment's resistance to alternating impact.

[0052] In this embodiment, the flange opening 22 of the eccentric flange 2 is inclined outward, which helps to reduce the pressure on the outside of the gate. The pressure from the harsh marine environment, such as the tidal surge or splash zone outside the gate, is greater than the pressure of the water flow inside the gate. This pressure difference makes opening and closing the gate quite inconvenient. Unlike conventional gates where the flange opening is a straight section without inclination, which makes opening and closing the gate difficult and the pressure difference between the inside and outside accelerates wear and tear during use, thus affecting the gate's service life, this application, through the inclined flange opening 22, reduces the external pressure on the gate, facilitates gate closure under external pressure, reduces the power consumption of the hydraulic cylinder 3, and facilitates gate opening under the action of the hydraulic cylinder 3. This, in turn, helps to reduce wear and tear during gate use and extend the gate's service life.

[0053] The eccentric flange 2's structural design optimizes its stress distribution, enhances its resistance to alternating impacts, and ensures the overall operational stability of the gate. Furthermore, the use of TA2 titanium alloy provides excellent seawater corrosion resistance, enabling it to withstand the corrosive environment of alternating wet and dry conditions and high salt spray in the splash zone. It also boasts high strength, high toughness, and excellent fatigue resistance, with a tensile strength ≥480MPa. This effectively resists the high-load alternating impact loads in the seawater splash zone, preventing structural fatigue damage and ensuring long-term stable operation of the gate in the splash zone. The overall service life of the gate is ≥20 years. Additionally, TA2 titanium alloy is used as a complementary material; the bottom sill and embedded parts within the base 5 are made of high corrosion-resistant alloy, balancing corrosion resistance and structural strength, with a service life ≥30 years. Seawater-grade rubber is used for the seals, suitable for splash zone conditions, resistant to aging and corrosion, with a maintenance cycle ≥2 years. The maintenance cycle for other components is ≥5 years, significantly reducing the equipment's long-term maintenance costs.

[0054] The hydraulic cylinder 3 has a second through hole 31 and a third through hole 32 at both ends. The second through hole 31 and the third through hole 32 are both arranged through the cylinder at corresponding positions at both ends in a left-right direction. The hydraulic cylinder 3 is made of TA2 titanium alloy.

[0055] By using hydraulic cylinder 3, the gate panel 1 can rotate under hydraulic pressure. This improves the automation level of gate opening and closing, ensuring both convenience and safety.

[0056] The connector 4 consists of a pin 40 and a fastening plate 41. At least two fastening plates 41 are provided. Preferably, two fastening plates 41 are provided. The two fastening plates 41 are arranged in parallel. Each of the two fastening plates 41 has a mounting hole 411. The pin 40 passes sequentially through one fastening plate 41, the door panel 1 or the hydraulic cylinder 3, and the other fastening plate 41 before being positioned within the mounting hole 411.

[0057] By using the pin 40 and fastening plate 41, the stability of the connection between the various components of the gate can be ensured, while also simplifying the overall structure of the gate, ensuring the structural strength of the gate, and facilitating its assembly and disassembly.

[0058] In this embodiment, after the pin 40 connects the gate plate 1 to the fastening plate 41 and the hydraulic cylinder 3 to the fastening plate 41, bolts are provided at both ends of the pin 40 away from the fastening plate 41. A sealing gasket is provided on the side of the bolt facing the fastening plate 41. The bolt is made of either carbon steel or alloy steel. By providing the sealing gasket, chemical cell reactions can be avoided between the carbon steel metal fittings and any of the titanium alloy components among the connecting parts 4, eccentric flange 2, gate plate 1, and hydraulic cylinder 3. This effectively improves the sealing effect of the gate, ensures stable and reliable operation of the gate in the splash zone of the marine environment, reduces wear during gate operation, and enhances the gate's corrosion resistance.

[0059] Specifically, the connector 4 includes a first connector 42, a second connector 43, and a third connector 44. The first connector 42, the second connector 43, and the third connector 44 are respectively located at the end of the inner side panel 12 of the door panel 1 away from the main cover plate 11, the inner side of the inner main cover plate 11 of the door panel 1, and the inner side of the base 5. A pin 40 is sequentially inserted through one of the fastening plates 41 in the first connector 42, the side panel 12, and the other fastening plate 41 in the first connector 42. The outer side wall of the pin 40 is rotatably engaged with the mounting hole 411 and the first through hole 121 of the first connector 42. Similarly, the pin 40 is sequentially inserted through one of the fastening plates 41 in the second connector 43, the end of the hydraulic cylinder 3 facing the door panel 1, and the other fastening plate 41 in the second connector 43. The outer side wall of the pin 40 is rotatably engaged with the mounting hole 411 and the second through hole 31 of the second connector 43. The pin 40 is sequentially installed through one of the fastening plates 41 of the three-piece connection 44, the end of the hydraulic cylinder 3 facing the base 5, and the other fastening plate 41 of the three-piece connection 44. The outer side wall of the pin 40 is rotatably engaged with the mounting hole 411 and the third through hole 32 of the three-piece connection 44.

[0060] By installing connectors 42, 43, and 44 at different positions on the gate, the overall gate frame can be guaranteed to have a tensile, compressive, and shear strength safety factor ≥2, structural stress ≥295MPa, and gate working surface flatness error <2mm. This ensures both sealing accuracy and enhances the structure's resistance to alternating impacts, preventing fatigue damage caused by long-term impacts. Connector 4 is designed based on maximum lifting force, closing force, and alternating impact loads in the splash zone, with a tensile, compressive, and shear strength safety factor ≥5. Fasteners such as pins 40, screws, and bolts have a safety factor ≥5 and are all made of TA2 titanium alloy, ensuring the equipment's resistance to high-load alternating impacts and preventing fatigue damage to critical components.

[0061] A hydraulic control system includes a bidirectional water-stopping hydraulic centralized control gate. The gate is installed in the system. The system controls the gate to open and close automatically. The system also includes an electrical control cabinet 7 and a touch screen 70. The touch screen 70 is mounted on the top of the electrical control cabinet 7. The touch screen 70 is a 7-inch industrial touch screen. The hydraulic control system operates at AC380V and has a power output of 5.5kW. The control voltage is DC24V. The hydraulic control system is compatible with industrial power standards. Furthermore, all internal components of the hydraulic control system are corrosion-resistant, enabling it to withstand the high-salt corrosive environment of the splash zone.

[0062] The system features centralized touchscreen control, integrating a hydraulic pump 71, control valve group 72, and position sensor. It can synchronously control 10 sets of gates, offering convenient operation. It also supports remote control from different locations, enabling remote gate opening and closing, adjustment of operating parameters, and monitoring of equipment status, adapting to operational needs in harsh environments. Furthermore, the touchscreen 70 allows users to intuitively view the conditions inside the seawater test tank and manually adjust gate opening and closing settings, enhancing system reliability and safety. The touchscreen 70 also supports precise setting of gate opening and closing speeds and angles, providing real-time feedback on gate position and sealing status. In case of jamming, leakage, or impact overload, the system will automatically alarm and cut off power output to prevent equipment damage.

[0063] The system also includes a hydraulic pump 71, a control valve assembly 72, and a sensor 73. The hydraulic pump 71 is connected to the corresponding gate via the control valve assembly 72. The sensor 73 is connected to both the hydraulic pump 71 and the control valve assembly 72. The hydraulic pump 71 is a vane-type hydraulic pump with a pressure rating of 16 MPa. The control valve assembly 72 includes a solenoid valve coil 721, a solenoid valve coil 722, and a two-position two-way solenoid valve 723. One end of the solenoid valve coil 721 is connected to the gate. Both ends of the solenoid valve coil 721 are electrically connected to both ends of the solenoid valve coil 722 via the two-position two-way solenoid valve 723. One end of the solenoid valve coil 722 is connected to one end of the hydraulic pump 71 via the sensor 73. The other end of the hydraulic pump 71 is electrically connected to the other end of the solenoid valve coil 722 via the sensor 73.

[0064] The control system outputs a control signal to drive the hydraulic pump 71 to start, and then delivers hydraulic oil to the hydraulic cylinder 3 of the target gate through the control valve group 72, so as to realize the smooth opening and closing of the gate. The linkage error of multiple gates is ≤0.5s, ensuring the accuracy of control.

[0065] At least one solenoid valve coil 721 is provided. At least two two-position two-way solenoid valves 723 are provided. Preferably, six solenoid valve coils 721 and two two-position two-way solenoid valves 723 are provided. The positive and negative terminals of the output side of the six solenoid valve coils 721 are connected to the gate. The positive terminals of the input side of the six solenoid valve coils 721 are connected in parallel and then electrically connected to the solenoid valve coil 722 and the sensor 73 through the two-position two-way solenoid valves 723. The negative and positive terminals of the input side of the six solenoid valve coils 721 are connected in parallel and then electrically connected to the solenoid valve coil 722 and the sensor 73 through the two-position two-way solenoid valves 723. In this embodiment, the operating voltage of the solenoid valve coil 721, the solenoid valve coil 722, and the two-position two-way solenoid valve 723 is DC24V, 31W. The model of the solenoid valve coil 721 is selected as 4WE6E-60B / CG24N9Z5L. The model of the second coil 722 of the solenoid valve is selected as DBW10B-1-50B / 200CG24.

[0066] By strategically configuring the quantity and type of various solenoid valves, the system's flexibility and safety in controlling different gates can be improved, as well as the reliability of system operation.

[0067] The control valve assembly 72 also includes a check valve 724 and a quick-connect coupling 725. The check valve 724 is a hydraulically controlled check valve. One end of the check valve 724 is electrically connected to a gate valve, and the other end of the check valve 724 is electrically connected to the output side of the corresponding solenoid valve coil 721 via the quick-connect coupling 725. At least one check valve 724 and one quick-connect coupling 725 are provided. The number of check valves 724 and quick-connect couplings 725 is the same as the number of solenoid valve coils 721.

[0068] By combining the one-way valve 724 and the quick-connect fitting 725, the accuracy and reliability of the system's gate control can be improved, and backflow can be prevented, thus enhancing user safety.

[0069] The sensor 73 includes a pressure sensor 731, an electrical contact level gauge 732, and a flow meter 733. One end of the pressure sensor 731 and the flow meter 733 are each electrically connected to the corresponding solenoid valve coil 722. The other end of the pressure sensor 731 is electrically connected to the other end of the flow meter 733 via the hydraulic pump 71 and the electrical contact level gauge 732 in sequence.

[0070] By combining the pressure sensor 731, the electrical contact level gauge 732, and the flow meter 733, the accuracy of the system's detection of the conditions inside the seawater test pool can be effectively improved, thereby helping to ensure the reliability of the system's operation.

[0071] Example 1:

[0072] This embodiment is specifically designed for the modification of a seawater experimental pool in Qingdao, adaptable to splash zone conditions. It is primarily aimed at addressing the "green tide" natural disaster that occurs annually from June to September in the Yellow Sea region—the widespread distribution of *Ulva prolifera* (a type of algae) in the Yellow Sea, which severely impacts marine testing, tourism, and aquaculture industries (statistically, the annual economic losses and remediation costs amount to 300-500 million yuan). This invention, relying on its excellent bidirectional sealing performance, splash zone adaptability, and *Ulva prolifera* control effect, can quickly close the gate during green tide outbreaks, forming a tight protective barrier. This effectively prevents *Ulva prolifera* from entering the experimental pool, avoiding the problem of rapid death of *Ulva prolifera* within 3 days after entry, and the release of algal humus, sulfides, and other substances that pollute the water.

[0073] 1. Device Composition

[0074] Gate (10 sets): 2 eccentric flanges, 620×320mm foundation, 320mm water passage hole diameter, TA2 titanium alloy welded body, 6 seawater-specific rubber bidirectional seals, 3 TA2 titanium alloy hydraulic cylinders; gate frame safety factor 2.1, gate structural stress 298MPA, gate working surface flatness error 1.7mm; 40 pins and 4 connectors safety factor 5.1; installed using 13 TA2 titanium alloy horizontal ribs and 14 longitudinal ribs (16mm diameter, 120mm spacing) + C30 concrete pouring.

[0075] Hydraulic centralized control system (1 set): working voltage AC380V, power 5.5KW, control voltage DC24V, equipped with a 7-inch industrial touch screen, integrating vane hydraulic pump 71 (pressure rating 16MPa), electromagnetic control valve group 72, displacement sensor, the parts are treated with anti-corrosion, and connected to 10 sets of gate hydraulic cylinders 3 through high-pressure oil pipes.

[0076] 2. Work Process

[0077] Preparation phase: After the equipment is installed, complete the parameter initialization on the touch screen 70, and set the gate opening and closing speed (5mm / s), sealing pressure threshold (10MPa) and impact overload protection threshold.

[0078] Start-up operation: Input the start-up command on the touch screen 70, the control system drives the hydraulic pump 71 to start, the control valve group 72 switches to the "start" position, the hydraulic oil drives the gate to open smoothly, the displacement sensor provides real-time feedback on the gate position, and the system automatically stops after the gate is in place.

[0079] Closing and sealing: When a closing command is input on the touch screen 70, the hydraulic pump 71 starts and the gate closes slowly. Once the seal is in place and the pressure reaches the set threshold, the system locks in the closed state.

[0080] Operation monitoring: The system monitors the gate position, hydraulic pressure and impact load in real time. If any abnormalities such as leakage, jamming or impact overload occur, an alarm will be triggered immediately and the power will be cut off. At the same time, the fault information will be recorded.

[0081] Shutdown and maintenance: After the test, close all gates and confirm the sealing status, turn off the main power supply of the system, and perform routine maintenance on the equipment according to the specifications.

[0082] 3. Verification Results

[0083] The equipment was operated for 6 months in the Qingdao seawater test pool (splash zone condition). Testing showed that the TA2 titanium alloy components showed no obvious corrosion, met the high-load alternating impact resistance standards, and the equipment structure had no fatigue, loosening, or deformation issues. The bidirectional seal achieved zero leakage; the hydraulic control system was highly responsive, with a synchronous opening and closing error of 0.3 seconds for multiple gates. All indicators met the requirements for use in the splash zone and the seawater test pool, providing a stable and clean environment for the normal testing of nearly 3,000 samples in the test pool. This effectively ensured the smooth progress of a research project worth nearly 50 million yuan, reduced the adverse impact of green tide disasters on marine scientific research, and also provided auxiliary support for the prevention and control of seaweed in the surrounding aquaculture and cultural tourism industries (see Appendix 6).

[0084] Example 2:

[0085] The difference between this embodiment and Embodiment 1 is that the equipment is adapted to the low-temperature splash zone seawater environment (-5-10℃): the rubber bidirectional seal 6 that can be used in seawater is replaced with low-temperature resistant special rubber (minimum operating temperature -10℃), and the hydraulic oil of the hydraulic cylinder 3 is replaced with low-temperature antifreeze hydraulic oil (viscosity grade ISO VG46, pour point -25℃). The rest of the structure and parameters are consistent with Embodiment 1, and it can realize remote control of gate opening and closing, parameter adjustment and operation status monitoring, which is suitable for the operation requirements of low temperature and severe cold environment in winter.

[0086] Operational verification: The equipment operated continuously for 3 months in a cryogenic splash zone environment. The gate opened and closed smoothly, and the bidirectional sealing effect did not decrease. The TA2 titanium alloy components did not exhibit cryogenic brittleness, and their resistance to alternating impact remained stable. The hydraulic control system did not experience icing or blockage. The remote control response was sensitive and the operation was precise, without any delay or lag. It not only meets the usage requirements of cryogenic splash zone scenarios but also significantly improves the convenience and safety of equipment operation.

[0087] Furthermore, addressing the issue of seawater turbidity that commonly occurs along the Qingdao coast in winter, suspended sediment and fine gravel can easily flow into core areas such as experimental pools and aquaculture ponds, causing equipment blockages and water pollution. The cost of cleaning experimental pools and purifying water can reach 300,000 to 500,000 yuan per instance. Moreover, turbid seawater affects the accuracy of water quality data in scientific research experiments, leading to inaccurate results. This invention, relying on its excellent resistance to high-load alternating impacts, bidirectional sealing effect, and remote control advantages, allows for the rapid and remote closure of all gates when seawater is turbid. This eliminates the need for on-site operation by personnel in low-temperature environments, ensuring personnel safety and forming a tight protective barrier. It effectively prevents suspended sediment and fine gravel from entering, avoiding clogging of water passages, wear on gate seals and experimental equipment, reducing equipment cleaning and maintenance costs, and ensuring clean water in the experimental pools, thus guaranteeing the continuous and stable conduct of scientific research experiments. (See attached document) Figure 7 .

[0088] In summary, it is evident that this application addresses the harsh marine environment of splash zones, characterized by alternating wet and dry corrosion and high-load alternating impact, as well as the actual usage requirements of seawater test pools. Through integrated design, including the selection of seawater-grade rubber and corrosion-resistant titanium alloy materials, the implementation of an anti-alternating impact structure, optimization of bidirectional sealing components, centralized hydraulic control, and customized installation processes, a complete set of equipment is established, comprising a water passage gate and a centralized hydraulic control system. Using TA2 titanium alloy as the core material, the equipment balances corrosion resistance and resistance to high-load alternating impact. A bidirectional water-stop structure solves the problems of water level maintenance and leakage within the pool. Touchscreen centralized control enables simultaneous and precise adjustment of multiple gates, improving operational efficiency, mitigating on-site operational safety risks, and meeting the needs of extreme operating conditions. A high-safety-factor structure and customized installation processes enhance the equipment's resistance to alternating impact and long-term operational stability, precisely adapting to the operating conditions of seawater test pools and similar splash zone scenarios. Furthermore, it provides reliable technical support for the modification of seawater test pools and similar marine facilities in splash zones. It is particularly suitable for applications in splash zones such as seawater test pools, coastal aquaculture areas, and seawater desalination intakes, enabling high sealing and precise automated control, and adapting to the gate modification and construction needs in various seawater environments. Furthermore, a survey of relevant gate installations both domestically and internationally revealed no gates similar to those described in this application, further demonstrating the uniqueness of the gate's installation in splash zone marine environments.

[0089] It should be noted that the harsh environment adaptation setting of the splash zone in this application is mainly reflected in the fact that the gate plate 1, eccentric flange 2, hydraulic cylinder 3 and connecting parts 4 are all made of TA2 titanium alloy, which takes into account both excellent corrosion resistance and high load-bearing alternating impact resistance, accurately adapts to the harsh working conditions of alternating dry and wet conditions and alternating impact in the splash zone, and solves the industry pain points of existing gates being prone to corrosion and fatigue damage.

[0090] This application uses a bidirectional sealing element 6 to set up a bidirectional water-stopping structure, which breaks through the design limitations of traditional unidirectional water-stopping, realizes bidirectional zero leakage sealing inside and outside the pool, and ensures the accuracy of the test and the stability of equipment operation.

[0091] This application utilizes a single system to link multiple gates, achieving centralized hydraulic touchscreen control. It features a high degree of automation, a synchronization control error of ≤0.5s, and convenient operation. Furthermore, all components undergo anti-corrosion treatment, making it suitable for the corrosive environment of splash zones. The addition of remote control functionality mitigates safety risks associated with on-site operation in harsh environments and enhances operational convenience.

[0092] In addition, the anti-alternating impact structure and installation settings of this application are mainly reflected in the fact that the safety factor of the key components of the gate is ≥5. With the customized welding, horizontal ribs 13 and longitudinal ribs 14 are embedded into the gate panel 1 by concrete pouring, which can enhance the overall structure's resistance to high load-bearing alternating impact and perfectly adapt to the working conditions of the splash zone.

[0093] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bidirectional water-stopping hydraulic centralized control gate, characterized in that, It includes a door panel (1), an eccentric flange (2), a hydraulic cylinder (3), and a connector (4); the door panel (1) is hinged to the top of the eccentric flange (2) in a rotatable manner through the connector (4); the two ends of the hydraulic cylinder (3) are respectively connected to the inner side of the door panel (1) and the base (5) through the connector (4); the hydraulic cylinder (3) drives the door panel (1) to move under the action of the hydraulic cylinder (3), thereby realizing the opening and closing of the gate; wherein, the top of the eccentric flange (2) is provided with a bidirectional seal (6).

2. The bidirectional water-stopping hydraulic centralized control gate according to claim 1, characterized in that, The door panel (1) includes a main cover plate (11) and a side plate (12); the top of the main cover plate (11) is connected to one end of the side plate (12); the inner side of the main cover plate (11) is rotatably connected to the hydraulic cylinder (3) through a connector (4); the end of the side plate (12) away from the main cover plate (11) is rotatably connected to the top of the eccentric flange (2) through a connector (4).

3. The bidirectional water-stopping hydraulic centralized control gate according to claim 2, characterized in that, The side plate (12) includes a side plate (122) and a side plate (123); one end of the side plate (122) is connected to the top of the main cover plate (11), and the other end of the side plate (122) is connected to the connector (4) in a movable manner through the side plate (123).

4. A bidirectional water-stopping hydraulic centralized control gate according to claim 3, characterized in that, The first side plate (122) and the second side plate (123) have a certain included angle; the included angle ranges from 90° to 180°.

5. A bidirectional water-stopping hydraulic centralized control gate according to claim 2, characterized in that, The door panel (1) also includes horizontal ribs (13) and vertical ribs (14); the horizontal ribs (13) and vertical ribs (14) are arranged alternately; both the horizontal ribs (13) and vertical ribs (14) are arranged on the outside of the door cover (11).

6. A bidirectional water-stopping hydraulic centralized control gate according to claim 5, characterized in that, The horizontal reinforcement (13) and the vertical reinforcement (14) are connected to the top of the door panel (1) by concrete pouring.

7. A bidirectional water-stopping hydraulic centralized control gate according to claim 1, characterized in that, The eccentric flange (2) includes a flange seat (21) and a flange opening (22); the flange seat (21) is connected to the base (5); the flange opening (22) is located at the top of the flange seat (21), and a bidirectional seal (6) is provided at the top of the flange opening (22), and the top of the bidirectional seal (6) is either in contact with or separate from the door panel (1); a connector (4) is provided on the outside of the flange opening (22); and a hydraulic cylinder (3) is installed inside the flange opening (22) in a movable manner.

8. A bidirectional water-stopping hydraulic centralized control gate according to claim 7, characterized in that, A water passage hole is formed on the inner side of the eccentric flange (2), and the opening of the water passage hole is rounded to reduce the alternating load caused by water flow impact.

9. A hydraulic control system, characterized in that, The system includes a bidirectional water-stopping hydraulic centralized control gate as described in any one of claims 1-8, wherein the gate is installed in the system.

10. A hydraulic control system according to claim 9, characterized in that, The system also includes a hydraulic pump (71), a control valve group (72), and a sensor (73); the hydraulic pump (71) is connected to the corresponding gate through the control valve group (72); the sensor (73) is connected to the hydraulic pump (71) and the control valve group (72) respectively.

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