Pressure testing device and testing process of underwater multi-hammer linkage hydraulic vibratory hammer

Abstract

This invention discloses a pressure testing device and testing process for an underwater multi-hammer linked hydraulic vibratory hammer, comprising a synchronous gearbox, a synchronous gearbox mechanical seal at the drive end of the synchronous gearbox, a synchronous gearbox sealing device on the mechanical seal, and the synchronous gearbox sealing device cooperating with the synchronous gearbox mechanical seal. The synchronous gearbox is connected to the vibratory hammer vibration box via a first transmission device, and a second transmission device is also connected between the synchronous gearbox and the vibratory hammer vibration box. A synchronous shaft is also provided between the synchronous gearbox and the vibratory hammer vibration box. Through design improvements, the new device can meet the pressure testing requirements of 6 kg / cm². 2 It meets water pressure resistance requirements and has stronger water pressure resistance, enabling operation at depths of up to 60 meters. This will greatly expand the applicability and reliability of vibratory hammer assemblies in deep-water operations.

Description

Technical Field

[0001] This invention relates to the field of underwater development technology for oil and natural gas in navigable waters, and in particular to a pressure testing device and testing process for an underwater multi-hammer linkage hydraulic vibratory hammer. Background Technology

[0002] Underwater vibratory hammer sets are key equipment used in underwater vibratory sinking operations. They are mainly used in bridges, docks, and marine engineering. A vibratory hammer set typically consists of components such as a synchronous gearbox and a hammer vibratory box. It utilizes hydraulic pressure to generate a vibrational force, assisting in the underwater sinking of steel cylinders. Due to the special nature of the working environment, underwater vibratory hammer sets need to possess characteristics such as water pressure resistance and good sealing performance.

[0003] Existing vibratory hammer assembly drive end sealing devices cannot fully meet the 6kg / cm requirement when operating underwater. 2 The current water pressure resistance requirements of the vibratory hammer assembly are insufficient, resulting in water pressure entering the equipment and affecting its normal operation. At the same time, the current vibratory hammer assembly has limited water pressure resistance underwater and cannot meet the requirements of 60 meters water depth in actual operation. This limits the applicability and reliability of the vibratory hammer assembly in deep water operation. To address this, we propose a pressure testing device and testing process for an underwater multi-hammer linkage hydraulic vibratory hammer. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a pressure testing device and testing process for an underwater multi-hammer linked hydraulic vibratory hammer. Through design improvements, the new device can meet the 6 kg / cm² pressure testing requirements. 2 It meets the water pressure resistance requirements and has stronger water pressure resistance, and can operate in water depths of up to 60 meters, which will greatly expand the applicability and reliability of vibratory hammer sets in deep-water operations.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a pressure testing device for an underwater multi-hammer linkage hydraulic vibratory hammer, comprising a synchronous gearbox, a synchronous gearbox mechanical seal at the drive end of the synchronous gearbox, a synchronous gearbox sealing device on the synchronous gearbox mechanical seal, the synchronous gearbox sealing device cooperating with the synchronous gearbox mechanical seal, the synchronous gearbox being connected to a vibratory hammer vibration box via a first transmission device, a second transmission device connecting the synchronous gearbox and the vibratory hammer vibration box, a synchronous shaft being provided between the synchronous gearbox and the vibratory hammer vibration box, a vibratory hammer mechanical seal at the drive end of the vibratory hammer vibration box, a gearbox connecting flange on the synchronous gearbox, a vibratory hammer connecting flange on the vibratory hammer vibration box, the vibratory hammer mechanical seal being connected to the vibratory hammer sealing device, a hydraulic system on the synchronous gearbox, and a control system within the hydraulic system.

[0006] As a preferred embodiment of the present invention, the first transmission device includes a vibratory hammer drive shaft connecting the synchronous gearbox and the vibratory hammer vibration box, wherein the vibratory hammer drive shaft transmits the power output of the synchronous gearbox to the vibratory hammer vibration box.

[0007] As a preferred embodiment of the present invention, the second transmission device includes a gearbox drive shaft connecting the synchronous gearbox and the vibratory hammer vibration box, wherein the gearbox drive shaft transmits the power output of the synchronous gearbox to the vibratory hammer vibration box.

[0008] As a preferred embodiment of the present invention, the hydraulic system includes a test sleeve mounted on a synchronous gearbox, a high-pressure pipeline connected to the test sleeve, a low-pressure pipeline also connected to the test sleeve, and a pressure booster connected to the ends of the high-pressure pipeline and the low-pressure pipeline.

[0009] As a preferred embodiment of the present invention, the pressure booster pressurizes the liquid in the hydraulic system.

[0010] As a preferred embodiment of the present invention, the high-pressure pipeline transports the high-pressure liquid generated by the pressurizer to the synchronous gearbox, and the low-pressure pipeline transports the low-pressure liquid discharged from the synchronous gearbox back to the pressurizer, forming a closed hydraulic circulation system.

[0011] As a preferred embodiment of the present invention, the control system includes a vibratory hydraulic motor disposed in the hydraulic system, a check valve and a relief valve disposed in the hydraulic system, and a hydraulic oil tank disposed in the hydraulic system.

[0012] As a preferred embodiment of the present invention, the one-way valve controls the one-way flow of the liquid, the relief valve limits the maximum working pressure of the hydraulic system, and the hydraulic oil tank is located at the bottom of the hydraulic system for storing hydraulic oil.

[0013] The present invention also provides a technical solution, an experimental process for a pressure testing device for an underwater multi-hammer linkage hydraulic vibratory hammer, comprising the following steps:

[0014] a: Fabrication of sealing devices: Based on the technical performance requirements of the underwater hammer assembly, fabricate a synchronous gearbox sealing device and a vibratory hammer sealing device, and fabricate a test sleeve as part of the test device.

[0015] b: Modify the connecting parts: Disassemble the synchronous shaft, gearbox connecting flange, and vibratory hammer connecting flange of the 12-vibratory hammer linkage system, and process and modify the gearbox connecting flange, vibratory hammer connecting flange, and connecting parts to prepare for the subsequent precise installation of the synchronous shaft.

[0016] c: Install sealing devices: Install the mechanical seal of the vibratory hammer and the mechanical seal of the synchronous gearbox, and assemble the vibratory hammer, vibratory box, and synchronous gearbox into a pressure testing device, and perform a test at 8 kg / cm². 2 Pressure test.

[0017] d: Structural component replacement and anti-corrosion treatment: Replace the accessories, vent holes, and breather valve structural components of the hydraulic vibratory hammer vibratory box and synchronous gearbox; perform anti-corrosion treatment on hydraulic pipelines and water inlet facilities; add steel wire protective sleeves to the hydraulic pipes of the clamps.

[0018] e: Debugging of the linkage hammer assembly: Connect the hydraulic pipeline, debug the hammer assembly, and conduct a static load test of the entire hammer assembly in water.

[0019] Compared with the prior art, the beneficial effects that this invention can achieve are:

[0020] 1. Improved water pressure resistance: Through design improvements, the new device can withstand water pressure of 6 kg / cm². 2 It meets water pressure resistance requirements and has stronger water pressure resistance, enabling operation at depths of up to 60 meters. This will greatly expand the applicability and reliability of vibratory hammer assemblies in deep-water operations.

[0021] 2. Solving the watertightness problem: The new device adopts a mechanical seal and test sleeve design, which effectively solves the problem of insufficient watertightness of the existing vibratory hammer group, prevents water pressure from entering the equipment and ensures the normal operation of the equipment.

[0022] 3. Improved testing process: The examples provide detailed descriptions of the processing, manufacturing, installation, and debugging procedures for the sealing device, hydraulic system, and structural components, providing a clear operating guide for the pressure testing of underwater multi-hammer linkage hydraulic vibratory hammers, ensuring that the device can work normally in practical applications.

[0023] 4. Enhance the corrosion resistance of equipment: Anti-corrosion treatment of hydraulic pipelines and water inlet facilities, and the addition of steel wire protective sleeves, can enhance the corrosion resistance of equipment and extend its service life. Attached Figure Description

[0024] Figure 1 This is a schematic diagram showing the connection state of the vibration box and synchronous gearbox after the sealing device of the present invention has been modified.

[0025] Figure 2 This is a schematic diagram of the simulated pressure test of the present invention;

[0026] Figure 3 This is a schematic diagram of the pressure testing device of the present invention;

[0027] Figure 4 This is a frontal cross-sectional view of the pressure testing apparatus of the present invention;

[0028] Figure 5 This is a schematic diagram of the hydraulic control system before the modification of this invention;

[0029] Figure 6 This is a schematic diagram of the modified hydraulic control system of the present invention.

[0030] The components include: 1. Synchronous gearbox mechanical seal; 2. Synchronous gearbox sealing device; 3. Vibratory hammer drive shaft; 4. Vibratory hammer mechanical seal; 5. Gearbox drive shaft; 6. Gearbox connecting flange; 7. Synchronous shaft; 8. Vibratory hammer connecting flange; 9. Vibratory hammer sealing device; 10. Synchronous gearbox; 11. Vibratory hammer vibration box; 12. Pressure booster; 13. Test sleeve; 14. High-pressure pipeline; 15. Low-pressure pipeline; 16. Vibratory hydraulic motor; 17. Check valve; 18. Relief valve; 19. Hydraulic oil tank. Detailed Implementation

[0031] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0032] Example:

[0033] Example 1: As Figure 1 - Figure 6As shown, this embodiment proposes a pressure testing device for an underwater multi-hammer linked hydraulic vibratory hammer, including a synchronous gearbox 10. A synchronous gearbox mechanical seal 1 is provided at the drive end of the synchronous gearbox 10. A synchronous gearbox sealing device 2 is provided on the synchronous gearbox mechanical seal 1, and the synchronous gearbox sealing device 2 cooperates with the synchronous gearbox mechanical seal 1. The synchronous gearbox 10 is connected to a vibratory hammer vibration box 11 via a first transmission device. A second transmission device is also connected between the synchronous gearbox 10 and the vibratory hammer vibration box 11. A synchronous shaft 7 is also provided between the synchronous gearbox 10 and the vibratory hammer vibration box 11. A vibratory hammer mechanical seal 4 is provided at the drive end of the vibratory hammer vibration box 11. The gearbox 10 is provided with a gearbox connecting flange 6, the vibratory hammer vibratory box 11 is provided with a vibratory hammer connecting flange 8, the vibratory hammer mechanical seal 4 is connected to the vibratory hammer sealing device 9, the synchronous gearbox 10 is provided with a hydraulic system, and the hydraulic system is also provided with a control system. The first transmission device includes a vibratory hammer drive shaft 3 connecting the synchronous gearbox 10 and the vibratory hammer vibratory box 11. The vibratory hammer drive shaft 3 transmits the power output of the synchronous gearbox 10 to the vibratory hammer vibratory box 11. The second transmission device includes a gearbox drive shaft 5 connecting the synchronous gearbox 10 and the vibratory hammer vibratory box 11. The gearbox drive shaft 5 transmits the power output of the synchronous gearbox 10 to the vibratory hammer vibratory box 11.

[0034] The hydraulic system includes a test sleeve 13 mounted on a synchronous gearbox 10, a high-pressure pipeline 14 connected to the test sleeve 13, a low-pressure pipeline 15 also connected to the test sleeve 13, and a pressure booster 12 connected to the ends of the high-pressure pipeline 14 and the low-pressure pipeline 15. The pressure booster 12 pressurizes the liquid in the hydraulic system. The high-pressure pipeline 14 delivers the high-pressure liquid generated by the pressure booster 12 to the synchronous gearbox 10. The low-pressure pipeline 15 delivers the low-pressure liquid discharged from the synchronous gearbox 10 back to the pressure booster 12, forming a closed hydraulic circulation system. The control system includes a vibratory hydraulic motor 16 mounted on the hydraulic system, a one-way valve 17 and a relief valve 18 mounted on the hydraulic system, and a hydraulic oil tank 19 mounted on the hydraulic system. The one-way valve 17 controls the unidirectional flow of the liquid, the relief valve 18 limits the maximum working pressure of the hydraulic system, and the hydraulic oil tank 19 is located at the bottom of the hydraulic system and is used to store hydraulic oil.

[0035] First, the sealing device and test sleeve are fabricated. Based on the technical performance requirements of the underwater hammer assembly, the vibratory hammer sealing device 9 and the synchronous gearbox sealing device 2 are fabricated first. Test sleeve 13 is fabricated to ensure it meets the installation requirements of the sealing device. Then, the connecting flange and connecting parts are disassembled and modified. The synchronous shaft 7, connecting flange, and other structural components of the 12-hammer linkage system are disassembled, and the connecting flange and connecting parts are modified to provide technical preparation for the subsequent precise installation of the synchronous shaft. Next, the mechanical seal device and pressure testing device are installed: the vibratory hammer mechanical seal 4 and the synchronous gearbox mechanical seal 1 are installed, and the vibratory hammer vibration box 11 and the synchronous gearbox 10 are assembled into a pressure testing device to conduct a test at 8 kg / cm². 2 Pressure test;

[0036] Next, install the connecting flange and synchronous shaft: After passing the pressure test, install the connecting flange and synchronous shaft 7, ensuring precise alignment. Then, replace structural components and perform anti-corrosion treatment: Replace the accessories, vents, breather valves, and other structural components of the hydraulic vibratory hammer's vibratory box 11 and synchronous gearbox 10. Perform anti-corrosion treatment on the hydraulic pipelines and water inlet facilities, and add steel wire protective sleeves to the clamp hydraulic pipes. Install a grating on the top surface of the hanger beam. Adjust the overflow valve pressure on the hydraulic motor's return oil pipeline, and then connect and debug the hydraulic pipelines: Connect the hydraulic pipelines and debug the hammer assembly to ensure the hydraulic system is functioning normally. The process begins with the following steps: First, the entire hammer assembly undergoes a static load test in the water. A crane vessel is used to lift the linked hammer assembly, and this test verifies its resistance to water pressure. Finally, the 12-hammer linkage underwater vibratory sinking of the steel cylinder is carried out according to the above procedures. This ensures the equipment's ability to resist pressurized water, underwater interference, and seawater corrosion, maintaining its original technical performance. These steps ensure that the sealing devices, hydraulic system, and structural components of the vibratory hammer multi-hammer linkage system function properly in the underwater construction environment and possess good pressure resistance and corrosion resistance.

[0037] It is worth noting that the function of a hydraulic system is to use fluid to transfer energy, achieving the control and transmission of force or torque. A hydraulic system typically consists of a hydraulic pump, hydraulic actuators (such as hydraulic cylinders or hydraulic motors), control valves, piping, and other auxiliary components. It can achieve precise force and motion control in various industrial and mechanical applications. The connection between the hydraulic system and the synchronous gearbox depends on the specific application scenario. Generally, the hydraulic system and the synchronous gearbox are connected via connecting flanges or other connecting devices. The hydraulic system typically provides power output, converting hydraulic energy into mechanical motion energy through hydraulic actuators. The synchronous gearbox, on the other hand, is used to achieve synchronized movement of multiple shafts, using gear combinations to achieve different speeds and torque outputs. Therefore, in some applications, the hydraulic system can provide power input to the synchronous gearbox to achieve precise motion control and regulation.

[0038] In the entire device, multiple sealing devices can be considered, such as a combination of mechanical and hydraulic seals (specifically, existing technologies can be used to create hydraulic seals that provide multiple sealing effects) to improve the sealing performance. Simultaneously, the sealing materials can be improved by using wear-resistant and corrosion-resistant materials to enhance the lifespan and reliability of the sealing device.

[0039] Increasing the number and types of hydraulic motors allows for the synchronous movement of more axes. Simultaneously, the control methods of the hydraulic system can be improved by employing more advanced control algorithms and sensor technology to achieve more precise force and motion control. The use of high-strength materials should also be considered to enhance the strength and stability of structural components.

[0040] Furthermore, the detailed structure, processing, installation, and commissioning procedures for the sealing device, hydraulic system, and structural components can be carried out according to the following steps:

[0041] I. Fabrication and Installation of Sealing Devices

[0042] Based on the technical performance requirements of the underwater hammer assembly, the vibratory hammer sealing device 9 and the synchronous gearbox sealing device 2 were first manufactured. This included the fabrication of seals, sealing rings, and other components to ensure they met the installation requirements.

[0043] Fabricate test sleeve 13 to ensure it meets the installation requirements of the sealing device. The test sleeve should have an appropriate length and diameter to accommodate both high-pressure and low-pressure pipelines.

[0044] Install the mechanical seal and pressure testing apparatus. This includes installing the mechanical seal onto the synchronous gearbox and vibratory hammer, and assembling the vibratory hammer and synchronous gearbox 10 pressure testing apparatus at a test pressure of 8 kg / cm². 2 .

[0045] After passing the pressure test, install the connecting flange and synchronous shaft 7 to ensure precise alignment. The connecting flange should have sufficient strength and stability to transmit high pressure and torque.

[0046] Replace structural components and perform anti-corrosion treatment. This includes replacing accessories, vents, breather valves, and other structural components of the hydraulic vibratory hammer's vibratory box 11 and synchronous gearbox 10; performing anti-corrosion treatment on hydraulic pipelines and water inlet facilities; and adding steel wire protective sleeves to the clamp hydraulic pipes.

[0047] A grating is installed on the top surface of the hanger beam. This helps improve the stability and load-bearing capacity of the equipment.

[0048] Adjust the pressure of the relief valve on the hydraulic motor's return line. This helps control the pressure and flow rate of the hydraulic system.

[0049] Connect and test the hydraulic lines. This includes connecting the hydraulic lines to the hydraulic system, testing the hammer assembly, and ensuring the hydraulic system is functioning correctly.

[0050] II. Fabrication and Installation of Hydraulic Systems

[0051] A hydraulic system is installed on the synchronous gearbox 10, and a control system is installed within it. The control system should have the function of monitoring and regulating the hydraulic system.

[0052] A first transmission device and a second transmission device are provided. The first transmission device includes a vibratory hammer drive shaft 3 connecting the synchronous gearbox 10 and the vibratory hammer vibration box 11, and the vibratory hammer drive shaft 3 transmits the power output of the synchronous gearbox 10 to the vibratory hammer vibration box 11; the second transmission device includes a gearbox drive shaft 5 connecting the synchronous gearbox 10 and the vibratory hammer vibration box 11, and the gearbox drive shaft 5 transmits the power output of the synchronous gearbox 10 to the vibratory hammer vibration box 11.

[0053] A high-pressure line 14 and a low-pressure line 15 are provided. The high-pressure line is used to transport the high-pressure liquid generated by the pressurizer 12 to the synchronous gearbox 10, and the low-pressure line is used to transport the low-pressure liquid discharged from the pressurizer 12 back to the synchronous gearbox 10, forming a closed hydraulic circulation system.

[0054] A vibratory hydraulic motor 16, a check valve 17, and a relief valve 18 are provided in the hydraulic system. The vibratory hydraulic motor is used to provide power output, the check valve controls the unidirectional flow of the liquid, and the relief valve limits the maximum working pressure of the hydraulic system.

[0055] A hydraulic oil tank 19 is installed on the hydraulic system to store hydraulic oil. The hydraulic oil tank should have sufficient capacity to meet the normal operating requirements of the equipment.

[0056] The hydraulic system should be tested and adjusted. During the testing process, the pressure, flow rate, and stability of the hydraulic system should be checked to ensure they meet the requirements, and any unsuitable aspects should be adjusted and optimized.

[0057] III. Static load test of the complete hammer assembly in water and underwater vibratory sinking of the steel cylinder

[0058] A crane vessel was used to lift the linkage hammer assembly, and a static load test was conducted on the entire hammer assembly in water to verify its water pressure resistance. During the test, the performance of the equipment was comprehensively checked to ensure that it could withstand the effects of pressurized water and underwater disturbances.

[0059] The construction of a 12-hammer underwater vibratory sinking steel cylinder will be carried out. During construction, the equipment should be installed and debugged according to the design requirements to ensure that the equipment can resist pressurized water, underwater interference, and seawater corrosion, and maintain its original technical performance. At the same time, appropriate safety and technical measures should be taken during construction to ensure the safety and stability of the construction process.

[0060] After a pressure test, replacing structural components and ensuring that the replaced components meet the requirements for passing the pressure test typically involves the following steps:

[0061] 1. Standardize material selection and design:

[0062] Replacement structural components should be manufactured using materials that conform to design specifications and material standards. These materials must possess sufficient strength and corrosion resistance to withstand the pressure and chemical erosion of the underwater working environment.

[0063] 2. Strict quality control:

[0064] During production and processing, strict quality control measures should be implemented, including but not limited to dimensional inspection, material performance testing, and non-destructive testing, to ensure that each structural component meets the design requirements.

[0065] 3. Pre-testing and verification:

[0066] Replaced structural components should undergo pre-installation stress testing and verification to ensure their performance meets or exceeds that of previously stress-tested components. These tests can be conducted in environments simulating actual working conditions.

[0067] 4. Precise installation and adjustment:

[0068] During installation, ensure that structural components are correctly aligned and installed without errors to guarantee sealing and structural integrity. If necessary, structural components can be adjusted appropriately to adapt to the actual working environment.

[0069] 5. Conduct the stress test again:

[0070] After replacing the structural components and completing the installation, the entire system should be pressure-tested again to verify the performance of the new components. This step is crucial to ensuring the system functions properly in underwater environments.

[0071] 6. Recording and tracing:

[0072] All replaced structural components and related test results should be recorded in detail for future maintenance and traceability. Records should include information such as the component's specifications, material batch, test data, and installation date.

[0073] To ensure that the replaced structural components meet the requirements for passing the pressure test, the following measures need to be taken:

[0074] Standardized production and processing: Replacement structural components should be produced and processed in accordance with the original design drawings and technical specifications to ensure that key parameters such as size, shape, and material are the same as or equivalent to the original structural components that have passed the pressure test.

[0075] Material and component consistency: The selected materials should have the same or better mechanical properties and chemical composition to ensure that their performance under pressure is consistent with the original components. Component batches and suppliers should also be consistent to reduce variability.

[0076] Quality Control: During the production process, strict quality control is implemented for each structural component, including material inspection, dimensional measurement, surface treatment, etc., to ensure that each step meets the quality standards.

[0077] Corrosion protection treatment: Apply appropriate corrosion protection treatments to the replaced structural components, such as coatings, plating, or other surface treatments, to enhance their corrosion resistance in underwater environments.

[0078] Pre-assembly testing: Before actual installation, structural components can be pre-assembled and subjected to simulated pressure tests to verify whether their performance under simulated working conditions meets the requirements.

[0079] Installation accuracy: During installation, ensure high precision and correct installation methods to avoid performance degradation due to installation errors.

[0080] Re-stress test: After installing new structural components, the entire system or component should be re-stress tested to ensure that the performance of the replaced structural components meets the design requirements under actual operating conditions.

[0081] Complete documentation: Record all details of the replacement process, including the part number, production batch, installation date, test results, etc., to facilitate future maintenance and quality traceability.

[0082] Regular monitoring and maintenance: After the equipment is put into operation, the structural components are regularly inspected and maintained to ensure that they meet the performance requirements in a long-term and stable manner.

[0083] Example 2: Figure 1 - Figure 6 As shown, the method of using the pressure testing device of the underwater multi-hammer linkage hydraulic vibratory hammer includes the following steps:

[0084] Fabrication of sealing devices: Based on the technical performance requirements of the underwater hammer assembly, a synchronous gearbox sealing device 2 and a vibratory hammer sealing device 9 are fabricated, and a test sleeve 13 is fabricated as part of the test device.

[0085] b: Modify connecting parts: Disassemble the synchronous shaft 7, gearbox connecting flange 6, vibratory hammer connecting flange 8 and other structural components of the 12-vibratory hammer linkage system, and process and modify the gearbox connecting flange 6, vibratory hammer connecting flange 8 and connecting parts to prepare for the subsequent precise installation of synchronous shaft 7.

[0086] c: Install sealing devices: Install the vibratory hammer vibration box 11 and the synchronous gearbox mechanical seal 1, and assemble the vibratory hammer vibration box 11 and the pressure testing device to perform 8kg / cm 2 Pressure test.

[0087] d: Structural component replacement and anti-corrosion treatment: Replace the accessories, vents, breather valves, and other structural components of the hydraulic vibratory hammer vibratory box 11 and synchronous gearbox; perform anti-corrosion treatment on hydraulic pipelines and water inlet facilities; add steel wire protective sleeves to the hydraulic pipes of the clamps.

[0088] e: Debugging of the linkage hammer assembly: Connect the hydraulic pipeline, debug the hammer assembly, and conduct a static load test of the entire hammer assembly in water.

[0089] Furthermore, the technical description reveals that the new device incorporates mechanical seals and test sleeves. These design improvements likely aim to enhance sealing performance, reduce potential leaks in underwater environments, and thus improve the underwater pressure resistance of the vibratory hammer assembly. The mechanical seals may ensure a tight seal even under high pressure by providing better contact surfaces and pressure distribution, preventing water from seeping into the equipment and affecting its normal operation.

[0090] The watertightness of the testing apparatus is crucial for testing the water pressure resistance of the vibratory hammer assembly. If the testing apparatus cannot maintain good watertightness, leaks may occur during pressure testing, leading to inaccurate test results. Therefore, the watertightness of the testing apparatus directly affects the assessment of the vibratory hammer assembly's water pressure resistance.

[0091] It is worth noting that, as a device for testing pressure performance, improvements to the pressure testing apparatus, specifically to enhance the underwater multi-hammer linkage hydraulic vibratory hammer's resistance to water pressure, require the following:

[0092] Structural design optimization: By improving the structural design of the vibratory hammer, its ability to withstand water pressure is increased. More robust and pressure-resistant materials can be used, and reasonable structural optimization can be carried out to enhance the pressure resistance of the entire system.

[0093] Improved sealing performance: Ensures the device meets sealing requirements, preventing moisture from seeping into the equipment. More efficient sealing materials and structures can be used to ensure no leakage occurs during underwater operation.

[0094] Material selection: Select corrosion-resistant materials that are more suitable for the underwater environment to reduce wear and corrosion of equipment during long-term underwater operation.

[0095] Water pressure resistance test: The underwater multi-hammer linkage hydraulic vibratory hammer is subjected to a water pressure test using a pressure testing device to evaluate its performance under different water pressures. The test results can identify weaknesses in the equipment and allow for corresponding improvements.

[0096] There is a close relationship between the watertightness of the test apparatus and the watertightness of the vibratory hammer assembly. When conducting water pressure resistance tests, the test apparatus needs to have good watertightness to ensure the accuracy of the test results, and the equipment itself must not be affected by water infiltration. If the watertightness of the test apparatus cannot be adequately guaranteed during the test, it may lead to deviations in the water pressure test results, thus making it impossible to accurately assess the underwater water pressure resistance of the vibratory hammer assembly.

[0097] Furthermore, the watertightness of the test setup is directly related to the actual underwater working environment of the vibratory hammer assembly. If the test setup cannot effectively maintain watertightness, water pressure may affect the vibratory hammer assembly during the test, making it impossible to accurately assess the underwater water pressure resistance of the vibratory hammer assembly.

[0098] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0099] 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 foregoing embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit 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 pressure testing device for an underwater multi-hammer linked hydraulic vibratory hammer, comprising a synchronous gearbox (10), characterized in that: The synchronous gearbox (10) is provided with a synchronous gearbox mechanical seal (1) at its drive end. A synchronous gearbox sealing device (2) is provided on the synchronous gearbox mechanical seal (1). The synchronous gearbox sealing device (2) is used in conjunction with the synchronous gearbox mechanical seal (1). The synchronous gearbox (10) is connected to a vibratory hammer vibratory box (11) through a first transmission device. A second transmission device is also connected between the synchronous gearbox (10) and the vibratory hammer vibratory box (11). A synchronous shaft (7) is also provided between the synchronous gearbox (10) and the vibratory hammer vibratory box (11). A vibratory hammer mechanical seal (4) is provided at the drive end of the vibratory hammer vibratory box (11). A gearbox connecting flange (6) is provided on the synchronous gearbox (10). A vibratory hammer connecting flange (8) is provided on the vibratory hammer vibratory box (11). The vibratory hammer mechanical seal (4) is connected to the vibratory hammer sealing device (9). A hydraulic system is provided on the synchronous gearbox (10). A control system is also provided in the hydraulic system. The hydraulic system includes a test sleeve (13) mounted on a synchronous gearbox (10), a high-pressure line (14) connected to the test sleeve (13), a low-pressure line (15) also connected to the test sleeve (13), and a pressure booster (12) connected to the ends of the high-pressure line (14) and the low-pressure line (15). The pressure booster (12) pressurizes the liquid in the hydraulic system; The high-pressure pipeline (14) delivers the high-pressure liquid generated by the pressurizer (12) to the position of the synchronous gearbox (10), and the low-pressure pipeline (15) delivers the low-pressure liquid discharged from the synchronous gearbox (10) back to the pressurizer (12), forming a closed hydraulic circulation system.

2. The pressure testing device for an underwater multi-hammer linkage hydraulic vibratory hammer according to claim 1, characterized in that: The first transmission device includes a vibratory hammer drive shaft (3) connecting the synchronous gearbox (10) and the vibratory hammer vibratory box (11), wherein the vibratory hammer drive shaft (3) transmits the power output of the synchronous gearbox (10) to the vibratory hammer vibratory box (11).

3. The pressure testing device for an underwater multi-hammer linkage hydraulic vibratory hammer according to claim 1, characterized in that: The second transmission device includes a gearbox drive shaft (5) connecting the synchronous gearbox (10) and the vibratory hammer vibratory box (11), the gearbox drive shaft (5) transmitting the power output of the synchronous gearbox (10) to the vibratory hammer vibratory box (11).

4. The pressure testing device for an underwater multi-hammer linkage hydraulic vibratory hammer according to claim 1, characterized in that: The control system includes a vibratory hydraulic motor (16) installed in the hydraulic system, a check valve (17) and a relief valve (18) installed in the hydraulic system, and a hydraulic oil tank (19) installed in the hydraulic system.

5. The pressure testing device for an underwater multi-hammer linkage hydraulic vibratory hammer according to claim 4, characterized in that: The one-way valve (17) controls the one-way flow of the liquid, the relief valve (18) limits the maximum working pressure of the hydraulic system, and the hydraulic oil tank (19) is located at the bottom of the hydraulic system and is used to store hydraulic oil.

6. The experimental process of the pressure testing device for the underwater multi-hammer linkage hydraulic vibratory hammer according to any one of claims 1-5, characterized in that: a: Fabrication of sealing devices: According to the technical performance requirements of the underwater hammer assembly, fabricate a synchronous gearbox sealing device (2) and a vibratory hammer sealing device (9), and fabricate a test sleeve (13) as part of the test device; b: Modify the connecting parts: Disassemble the synchronous shaft (7), gearbox connecting flange (6), and vibratory hammer connecting flange (8) of the 12-vibratory hammer linkage system, and process and modify the gearbox connecting flange (6), vibratory hammer connecting flange (8) and connecting parts to prepare for the subsequent precise installation of the synchronous shaft (7); c: Install sealing devices: Install the mechanical seal (4) of the vibratory hammer and the mechanical seal (1) of the synchronous gearbox, and assemble the vibratory hammer vibratory box (11) and the synchronous gearbox (10) into a pressure testing device, and perform 8kg / cm 2 Pressure test; d: Structural component replacement and anti-corrosion treatment: Replace the accessories, vents, and breather valve structural components of the hydraulic vibratory hammer vibratory box (11) and synchronous gearbox; perform anti-corrosion treatment on the hydraulic pipelines and water inlet facilities; Add steel wire protective sleeves to the hydraulic pipes of the clamps; e: Debugging of the linkage hammer assembly: Connect the hydraulic pipeline, debug the hammer assembly, and conduct a static load test of the entire hammer assembly in water.

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