Hydraulic injection drainage pump for deep sea
Patent Information
- Application Number
- CN202522499106.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-25
AI Technical Summary
现有技术中，“水上-水下”配电模式需配备复杂的脐带拖链与吊放机构，系统灵活性差，不适用于复杂工况或高频次作业活动，因此液压式动力装置成为深海作业的优选方案；现有常规液压泵的结构设计未针对深海环境优化，无法满足深海作业所需的耐高压性能、高密封要求及耐海水腐蚀能力，易出现渗漏、部件腐蚀失效等问题，严重影响作业稳定性与安全性，因此，本实用新型提出一种深海用液压式注射排水泵以解决现有技术中存在的问题
1、本实用新型采用液压缸与注射缸通过法兰集成的紧凑型结构，取消了传统“水上-水下”配电所需的脐带拖链与吊放装置，整体结构简洁紧凑，体积小巧，可适配多种水下设备的安装需求，适用性强；同时通过法兰分隔独立腔室及多位置O型密封圈密封设计，有效避免窜油、窜水问题，结合活塞环与推杆的同步联动结构，显著提升了设备运行稳定性，此外，液压阀与液压缸的配管随设备本体集成安装，简化了管路布局，降低了安装维护成本。
Smart Images
Figure CN224835258U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine engineering equipment technology, and in particular to a hydraulic injection drainage pump for deep-sea use. Background Technology
[0002] In marine engineering operations such as shipwreck salvage and underwater structure repair, it is often necessary to pump out seawater from the work area to create a relatively dry environment, providing the necessary conditions for specific operations such as underwater welding and component assembly / disassembly. Currently, the power supply of equipment in deep-sea operations mostly adopts a "surface-to-underwater" power distribution mode, which realizes power transmission through umbilical drag chains, hoisting devices and supporting pipelines. At the same time, hydraulic pumps, as common fluid transportation devices, are widely used in various fluid pumping systems. In existing technologies, the "surface-to-underwater" power distribution mode requires complex umbilical drag chains and hoisting mechanisms, resulting in poor system flexibility and unsuitability for complex working conditions or high-frequency operations. Therefore, hydraulic power units have become the preferred solution for deep-sea operations. However, the structural design of existing conventional hydraulic pumps is not optimized for the deep-sea environment and cannot meet the high pressure resistance, high sealing requirements, and seawater corrosion resistance required for deep-sea operations. This leads to problems such as leakage and component corrosion failure, which seriously affect the stability and safety of operations. Therefore, this utility model proposes a hydraulic injection drainage pump for deep-sea applications to solve the problems existing in the prior art. Summary of the Invention
[0003] To address the aforementioned issues, this utility model proposes a deep-sea hydraulic injection drainage pump. This deep-sea hydraulic injection drainage pump adopts a compact structure that integrates the hydraulic cylinder and the injection cylinder through a flange, eliminating the need for the umbilical drag chain and hoisting device required for traditional "above-underwater" power distribution. The overall structure is simple and compact, with a small size, and can adapt to the installation requirements of various underwater equipment, making it highly adaptable.
[0004] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a deep-sea hydraulic injection drainage pump, including a power component, a conveying component, a control component and a sealing and separating component, wherein the power component includes a hydraulic cylinder, the conveying component includes an injection cylinder, and the sealing and separating component includes a flange, wherein the flange is fixedly connected between the hydraulic cylinder and the injection cylinder, separating to form an independent power oil chamber and a seawater chamber. The control components include a hydraulic valve, a limit switch, a push rod, and a PLC controller. The push rod passes through the hydraulic cylinder and the flange, with one end extending into the hydraulic cylinder and the other end extending into the injection cylinder. A detection ring is provided on the push rod, and the limit switch is set corresponding to the detection ring and is connected to the PLC controller for signal transmission. A piston structure is provided inside the injection cylinder, and the piston structure is fixedly connected to the push rod via a coupling. The hydraulic valve is connected to the power oil interface of the hydraulic cylinder and is used to drive the push rod to drive the piston structure to reciprocate to realize seawater extraction and injection.
[0005] A further improvement is that the piston structure includes a primary piston ring and a secondary piston ring, which are coaxially fixed by a coupling and synchronously linked with the push rod.
[0006] A further improvement is that the sealing and separating assembly also includes an O-ring, and the flange, the end cap of the injection cylinder, the base and the piston structure are all provided with sealing grooves, and the O-ring is embedded in the sealing groove.
[0007] A further improvement is that the cylinder bodies of the hydraulic cylinder and injection cylinder are made of 316L stainless steel.
[0008] A further improvement is that the limit switch is a non-photoelectric detection switch, which is suitable for the working environment of deep sea with low light, high refraction and a lot of planktonic interference.
[0009] A further improvement is that the limit switch is used to feed back the action completion signal to the PLC controller to control the reciprocating cycle of the extraction-injection action.
[0010] A further improvement is that the piping between the hydraulic valve and the hydraulic cylinder is integrated with the drainage pump body to form an integrated structure.
[0011] The beneficial effects of this utility model are as follows: 1. This utility model adopts a compact structure that integrates the hydraulic cylinder and injection cylinder through a flange, eliminating the need for the umbilical drag chain and hoisting device required for traditional "above-underwater" power distribution. The overall structure is simple and compact, with a small size, and can adapt to the installation needs of various underwater equipment, making it highly adaptable. At the same time, the flange-separated independent chamber and multi-position O-ring sealing design effectively avoid oil and water leakage problems. Combined with the synchronous linkage structure of the piston ring and push rod, the stability of equipment operation is significantly improved. In addition, the piping of the hydraulic valve and hydraulic cylinder is integrated with the equipment body, simplifying the pipeline layout and reducing installation and maintenance costs.
[0012] 2. This utility model achieves precise detection of the push rod movement through the cooperation of a limit switch and a detection ring. The feedback signal is transmitted to the PLC controller in real time, automatically controlling the "extraction-injection" action to reciprocate in a cycle without manual intervention. This convenient operation significantly improves the efficiency of deep-sea drainage operations. At the same time, the non-photoelectric limit switch is suitable for the harsh environment of deep sea with low light, high refraction, and many planktonic interferences. It has high detection accuracy and timely feedback. Combined with hydraulic cylinders, injection cylinders, and other components made of seawater-resistant 316L stainless steel and a reliable sealing structure including O-rings and flanges, it ensures the safety of personnel and equipment in deep-sea operations. Attached Figure Description
[0013] Figure 1 This is the front view of the present invention; Figure 2 This is a schematic diagram of the bottom of the hydraulic cylinder of this utility model; Figure 3 This is a schematic diagram of the top of the flange of this utility model.
[0014] The components include: 1. Hydraulic cylinder; 2. Injection cylinder; 3. Hydraulic valve; 4. Flange; 5. Limit switch; 6. Push rod; 7. Detection ring; 8. Primary piston ring; 9. Secondary piston ring; 10. Coupling; 11. O-ring seal; 12. End cap; 13. Base; 14. Power oil interface. Detailed Implementation
[0015] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model. Example 1
[0016] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a deep-sea hydraulic injection drainage pump, including a power component, a conveying component, a control component, and a sealing and separating component. The power component includes a hydraulic cylinder 1, the conveying component includes an injection cylinder 2, and the sealing and separating component includes a flange 4. The flange 4 is fixedly connected between the hydraulic cylinder 1 and the injection cylinder 2, separating them to form an independent power oil chamber and a seawater chamber. The control components include a hydraulic valve 3, a limit switch 5, a push rod 6, and a PLC controller. The push rod 6 passes through the hydraulic cylinder 1 and the flange 4, with one end extending into the hydraulic cylinder 1 and the other end extending into the injection cylinder 2. A detection ring 7 is provided on the push rod 6. The limit switch 5 is correspondingly positioned to the detection ring 7 and is signal-connected to the PLC controller. A piston structure is provided inside the injection cylinder 2, and the piston structure is fixedly connected to the push rod 6 via a coupling 10. The hydraulic valve 3 is connected to the power oil interface 14 of the hydraulic cylinder 1, used to drive the push rod 6 to reciprocate the piston structure for seawater extraction and injection. The integrated hydraulic station inputs hydraulic oil into the power oil chamber of the hydraulic cylinder 1 through the hydraulic valve 3, pushing the push rod 6 to move the piston structure within the injection cylinder 2 to inject seawater. When the detection ring 7 moves with the push rod 6, it triggers the limit switch 5, and the signal is fed back to the PLC controller to control the hydraulic valve 3 to reverse. The hydraulic oil reverses, driving the push rod 6 to reset, thus completing the reciprocating operation.
[0017] The piston structure includes a primary piston ring 8 and a secondary piston ring 9, which are coaxially fixed by a coupling 10 and synchronously linked with the push rod 6. The coupling 10 rigidly connects the primary piston ring 8, the secondary piston ring 9, and the push rod 6, ensuring synchronous movement of the three. The double piston ring structure enhances the sealing and stability of seawater delivery in the injection cylinder 2, and improves drainage efficiency.
[0018] The sealing and separating assembly also includes O-rings 11. Sealing grooves are provided on the flange 4, the end cap 12 of the injection cylinder 2, the base 13, and the piston structure, and the O-rings 11 are embedded in the sealing grooves. The O-rings 11 form an elastic seal on each sealing surface, blocking the fluid exchange between the power oil chamber and the seawater chamber, preventing oil and water leakage, and improving the overall high-pressure resistance of the equipment, making it suitable for deep-sea operation environments.
[0019] The cylinder bodies of the hydraulic cylinder 1 and injection cylinder 2 are made of 316L stainless steel. 316L stainless steel has excellent resistance to seawater corrosion and mechanical strength, and can resist the erosion of the cylinder body by the high salt and high pressure environment of the deep sea, ensuring the structural integrity of the equipment during long-term high-frequency operation.
[0020] The limit switch 5 is a non-photoelectric detection switch, suitable for the working environment of deep sea with low light, high refraction, and abundant planktonic interference. The non-photoelectric structure avoids interference from insufficient light, water refraction, and plankton in the deep sea environment. It accurately captures the position of the detection ring 7 through mechanical contact detection, ensuring the reliability of signal feedback. Example 2
[0021] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a deep-sea hydraulic injection drainage pump, including a power component, a conveying component, a control component, and a sealing and separating component. The power component includes a hydraulic cylinder 1, the conveying component includes an injection cylinder 2, and the sealing and separating component includes a flange 4. The flange 4 is fixedly connected between the hydraulic cylinder 1 and the injection cylinder 2, separating them to form an independent power oil chamber and a seawater chamber. The control components include a hydraulic valve 3, a limit switch 5, a push rod 6, and a PLC controller. The push rod 6 passes through the hydraulic cylinder 1 and the flange 4, with one end extending into the hydraulic cylinder 1 and the other end extending into the injection cylinder 2. A detection ring 7 is provided on the push rod 6. The limit switch 5 is correspondingly positioned to the detection ring 7 and is signal-connected to the PLC controller. A piston structure is provided inside the injection cylinder 2, and the piston structure is fixedly connected to the push rod 6 via a coupling 10. The hydraulic valve 3 is connected to the power oil interface 14 of the hydraulic cylinder 1, used to drive the push rod 6 to reciprocate the piston structure for seawater extraction and injection. The integrated hydraulic station inputs hydraulic oil into the power oil chamber of the hydraulic cylinder 1 through the hydraulic valve 3, pushing the push rod 6 to move the piston structure within the injection cylinder 2 to inject seawater. When the detection ring 7 moves with the push rod 6, it triggers the limit switch 5, and the signal is fed back to the PLC controller to control the hydraulic valve 3 to reverse. The hydraulic oil reverses, driving the push rod 6 to reset, thus completing the reciprocating operation.
[0022] The limit switch 5 is used to feed back the action completion signal to the PLC controller to control the reciprocating cycle of the extraction-injection action. When the push rod 6 drives the detection ring 7 to the detection position of the limit switch 5, the limit switch 5 generates an electrical signal and transmits it to the PLC controller. The PLC controller controls the hydraulic valve 3 to switch the oil flow direction according to the signal command, so as to realize the automatic cyclic switching of extraction and injection actions.
[0023] The piping between the hydraulic valve 3 and the hydraulic cylinder 1 is integrated with the drain pump body, forming a unified structure. The integrated piping design shortens the hydraulic oil delivery path, reduces the risk of pipeline leakage, and facilitates manual testing of oil flow before operation and quick location and troubleshooting in case of faults, thereby reducing maintenance costs.
[0024] This deep-sea hydraulic injection drainage pump adopts a compact structure integrating hydraulic cylinder 1 and injection cylinder 2 via flange 4. It eliminates the need for umbilical drag chains and hoisting devices required for traditional "above-water" power distribution. The overall structure is simple and compact, with a small size, and can adapt to the installation requirements of various underwater equipment, making it highly adaptable. At the same time, the independent chambers separated by flange 4 and the multi-position O-ring seal design 11 effectively prevent oil and water leakage problems. Combined with the synchronous linkage structure of piston ring and push rod 6, the stability of equipment operation is significantly improved. In addition, the piping of hydraulic valve 3 and hydraulic cylinder 1 is integrated with the equipment body, simplifying the pipeline layout and reducing installation and maintenance costs. Furthermore, this utility model achieves precise detection of the movement of the push rod 6 through the cooperation of the limit switch 5 and the detection ring 7. The feedback signal is transmitted to the PLC controller in real time, automatically controlling the "extraction-injection" action to reciprocate in a cycle without manual intervention, making operation convenient and greatly improving the efficiency of deep-sea drainage operations. At the same time, the non-photoelectric limit switch 5 is suitable for the harsh environment of deep sea with low light, high refraction, and many planktonic interferences. It has high detection accuracy and timely feedback. Combined with the hydraulic cylinder 1, injection cylinder 2 and other components made of seawater corrosion-resistant 316L stainless steel and a reliable sealing structure including O-ring seals 11 and flanges 4, it ensures the safety of personnel and equipment in deep-sea operations.
[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A hydraulic injection drainage pump for deep-sea applications, comprising a power unit, a conveying unit, a control unit, and a sealing and partitioning unit, characterized in that: The power assembly includes a hydraulic cylinder (1), the delivery assembly includes an injection cylinder (2), and the sealing and separating assembly includes a flange (4). The flange (4) is fixedly connected between the hydraulic cylinder (1) and the injection cylinder (2), forming an independent power oil chamber and a seawater chamber. The control components include a hydraulic valve (3), a limit switch (5), a push rod (6), and a PLC controller. The push rod (6) passes through the hydraulic cylinder (1) and the flange (4), with one end extending into the hydraulic cylinder (1) and the other end extending into the injection cylinder (2). A detection ring (7) is provided on the push rod (6), and the limit switch (5) is set to correspond to the detection ring (7) and is connected to the PLC controller signal. A piston structure is provided in the injection cylinder (2), and the piston structure is fixedly connected to the push rod (6) through a coupling (10). The hydraulic valve (3) is connected to the power oil interface (14) of the hydraulic cylinder (1) and is used to drive the push rod (6) to drive the piston structure to reciprocate to realize seawater extraction and injection.
2. The deep-sea hydraulic injection drainage pump according to claim 1, characterized in that: The piston structure includes a primary piston ring (8) and a secondary piston ring (9). The primary piston ring (8) and the secondary piston ring (9) are coaxially fixed by a coupling (10) and are synchronously linked with the push rod (6).
3. A deep-sea hydraulic injection drainage pump according to claim 1, characterized in that: The sealing and separating assembly also includes an O-ring (11). Sealing grooves are provided on the flange (4), the end cap (12) of the injection cylinder (2), the base (13) and the piston structure. The O-ring (11) is embedded in the sealing groove.
4. A deep-sea hydraulic injection drainage pump according to claim 1, characterized in that: The cylinder bodies of the hydraulic cylinder (1) and injection cylinder (2) are made of 316L stainless steel.
5. A deep-sea hydraulic injection drainage pump according to claim 1, characterized in that: The limit switch (5) is a non-photoelectric detection switch, which is suitable for the working environment of deep sea with low light, high refraction and many floating interferences.
6. A deep-sea hydraulic injection drainage pump according to claim 1, characterized in that: The limit switch (5) is used to feed back the action completion signal to the PLC controller to control the reciprocating cycle of the extraction-injection action.
7. A deep-sea hydraulic injection drainage pump according to claim 1, characterized in that: The piping between the hydraulic valve (3) and the hydraulic cylinder (1) is integrated with the drainage pump body to form an integrated structure.