Oil injection end cover for pressure-bearing shell of oil cylinder integrated type hydraulic machine of deep submersible oil pump

Abstract

The utility model relates to the technical field of hydraulic devices, in particular to an oil injection end cover for a pressure-bearing shell of a deep submersible oil pump oil cylinder integrated hydraulic press, which comprises an end cover body, an oil injection port, an oil injection channel and a pipeline assembly port, the oil injection port faces the outside of the pressure-bearing shell, and the pipeline assembly port is formed in the end face, facing the inside of the pressure-bearing shell, of the end cover body and used for assembling an oil supply pipe from the inside of the pressure-bearing shell. The oil injection channel is arranged in the end cover body, and two ends of the oil injection channel are communicated with the oil injection port and the pipeline assembly port respectively; oil can directly enter the oil supply pipe in the pressure-bearing shell from the outside through the oil injection port and the oil injection channel, the space utilization rate is greatly increased, interference of a multi-stage pipeline to an internal structure is avoided, and impact of a deepwater high-pressure environment to pipeline sealing is relieved. And the built-in structural form of the oil injection channel also avoids forming a plurality of through holes in the pressure-bearing shell, so that the integrity of the pressure-bearing shell is ensured, the overall sealing performance is improved, and the efficient and reliable oil injection process is ensured.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic device technology, and in particular to an oil injection end cap for the pressure-bearing housing of a deep-sea submersible oil pump cylinder integrated hydraulic press. Background Technology

[0002] Water bodies typically form different water layers. Layered water intake gates rely on the power provided by deep-sea hydraulic presses to control the opening or closing of gates at different depths, thereby ensuring that water can be drawn from the appropriate water layer.

[0003] As the core actuator for opening and closing stratified intake gates, the deep-sea hydraulic press relies on a hydraulic system to drive the gate's movement. It typically consists of a pressure-bearing housing, a motor-pump assembly, a control valve assembly, an electrical control system, and hydraulic cylinders. Power is supplied to the hydraulic cylinders through external oil circulation. To meet the pressure resistance requirements of deep-water environments, the motor-pump assembly, control valve assembly, and electrical control system need to be integrated within the pressure-bearing housing. The connection between the oil inlet for injecting hydraulic oil into the pressure-bearing housing and the oil tank relies on external piping, such as welding or detachably fixing multiple metal oil pipes to the surface of the pressure-bearing housing. Not only does it occupy space inside and outside the shell, but the bending and branching of the pipelines also increase the structural complexity. The joints of multiple pipeline sections are prone to loosening or leakage due to deep water pressure fluctuations, requiring frequent maintenance and making it difficult to meet the requirements for long-term stable operation in deep water environments. At the same time, when installing related control valves for external pipelines to control the opening or closing of the oil inlet channel and the degree of opening, the selection of installation location is often difficult. Additional fixing holes or additional fixing structures are required for the pressure-bearing shell, which inevitably compromises the integration of the deep-sea hydraulic press.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background technology of this utility model, and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an oil injection end cap for the pressure-bearing housing of an integrated hydraulic press for deep-sea oil pump cylinders, which simplifies the layout of oil pipelines, improves the integration, sealing and space utilization of the oil injection end cap, and ensures long-term stable operation in deep water environments.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: an oil injection end cap for the pressure-bearing housing of an integrated hydraulic press for deep-sea oil pump cylinders, comprising:

[0007] The end cap body includes an oil injection channel and a pipeline assembly channel disposed inside the end cap body. The end cap body includes a side surface that forms a ring and inner and outer end faces that are perpendicular to the side surface, wherein the outer end face is used for valve body structure installation.

[0008] One end of the oil injection channel is open on the side to form an oil injection port, and the other end is open on the outer end face to form a first valve body connection port; one end of the pipeline assembly channel is open on the inner end face to form a pipeline assembly port for connecting the oil supply pipe inside the pressure-bearing shell, and the other end is open on the outer end face to form a second valve body connection port.

[0009] The valve body structure connects the oil injection channel and the pipeline assembly channel through the first valve body connection port and the second valve body connection port.

[0010] Furthermore, the oil injection channel includes an oil inlet section and an oil guide section. The oil inlet section is arranged radially along the end cap body, and the oil inlet is formed at one end facing the side. The oil guide section is bent into an L-shape, with one end connected to the oil inlet section and the other end facing the outside forming the first valve body connection port.

[0011] Furthermore, the diameter of the oil inlet section is larger than the diameter of the oil guide section.

[0012] Furthermore, the connection between the oil inlet section and the oil guide section is transitioned by an inclined oil guide slope.

[0013] Furthermore, the oil inlet is connected to an external oil supply pipeline via a connector structure.

[0014] Furthermore, a valve assembly hole is provided on the outer end face of the end cap body, and the valve body structure is fixedly connected to the end cap body through the valve assembly hole.

[0015] Furthermore, the end cap body is configured to form a sensor assembly port through the outer end face towards the inner end face, and the sensor is fixedly installed in the sensor assembly port.

[0016] Furthermore, an annular sealing groove is formed on the end face inside the end cap body.

[0017] Furthermore, an installation ring is also provided, the end face of which is fitted to the end face inside the end cover body;

[0018] The mounting ring end face is provided with a plurality of first mounting holes arranged in a ring at equal intervals, and the end face inside the end cap body has second mounting holes that correspond one-to-one with the first mounting holes.

[0019] Furthermore, the first mounting hole and the second mounting hole are coaxially arranged, and the diameter of the first mounting hole is smaller than that of the second mounting hole.

[0020] The beneficial effects of this utility model are as follows: By integrating the oil injection channel and pipeline assembly channel into the end cap body, this utility model reduces the space occupied by the pressure-bearing shell, improves space utilization efficiency, and makes the overall design of the deep-sea pump and cylinder integrated hydraulic press more compact. It also avoids the complex design of traditional external pipelines, reduces pipeline bends and branches, and the number of external pipeline joints, thereby reducing the risk of loosening or leakage caused by deep-water pressure fluctuations, improving the system's sealing and reliability, and better adapting to the long-term stable operation requirements in deep-water environments. Simultaneously, the valve body structure is directly installed on the external end face of the end cap, reducing the need for additional openings or fixing structures on the pressure-bearing shell, facilitating installation and maintenance, and improving the overall integration of the deep-sea pump and cylinder integrated hydraulic press. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of the oil injection end cap used in the pressure-bearing housing of a deep-sea submersible oil pump cylinder integrated hydraulic press;

[0023] Figure 2 A schematic diagram of the oil filling end cap from another angle for the pressure-bearing housing of a deep-sea oil pump cylinder integrated hydraulic press;

[0024] Figure 3 A schematic diagram of the internal structure of the oil injection end cap used in the pressure-bearing housing of a deep-sea oil pump cylinder integrated hydraulic press;

[0025] Figure 4 This is a top view of the end cap body in an embodiment of the present utility model;

[0026] Figure 5 for Figure 4 Sectional view at point AA;

[0027] Figure 6 for Figure 4 Sectional view at point BB;

[0028] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0029] Reference numerals: 01, oil supply pipe; 02, valve body structure; 03, sensor; 10, end cap body; 11, oil inlet; 12, oil inlet channel; 12a, first valve body connection port; 121, oil inlet section; 122, oil guide section; 123, oil guide slope; 13, pipeline assembly channel; 13a, second valve body connection port; 14, pipeline assembly port; 15, valve assembly hole; 16, sealing groove; 17, second mounting hole; 18, sensor assembly port; 20, mounting ring; 21, first mounting hole. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] like Figures 1 to 7 The oil filling end cap shown for the pressure housing of the integrated hydraulic press for deep-sea oil pump cylinder includes: end cap body 10 and oil filling channel 12 and pipeline assembly channel 13 disposed inside the end cap body 10. The end cap body 10 includes a side surface that surrounds the ring and inner and outer end faces that are perpendicular to the side surface, wherein the outer end face is for the valve body structure 02 to be installed.

[0034] One end of the oil injection channel 12 is open on the side to form an oil injection port 11, and the other end is open on the outer end face to form a first valve body connection port 12a; one end of the pipeline assembly channel 13 is open on the inner end face to form a pipeline assembly port 14 for connecting the oil supply pipe 01 inside the pressure-bearing housing, and the other end is open on the outer end face to form a second valve body connection port 13a.

[0035] The valve body structure 02 connects the oil injection channel 12 and the pipeline assembly channel 13 through the first valve body connection port 12a and the second valve body connection port 13a.

[0036] This invention integrates the oil injection channel 12 and the pipeline assembly channel 13 within the end cap body 10, reducing the space occupied by the pressure-bearing housing and improving space utilization efficiency. This makes the overall design of the deep-sea submersible oil pump and cylinder integrated hydraulic press more compact. It also avoids the complex design of traditional external pipelines, reducing pipeline bends, branches, and the number of external pipeline joints. This lowers the risk of loosening or leakage due to deep-water pressure fluctuations, improves the system's sealing and reliability, and better adapts to the long-term stable operation requirements in deep-water environments. Simultaneously, the valve body structure 02 is directly installed on the outer end face of the end cap, reducing the need for additional openings or fixing structures on the pressure-bearing housing, facilitating installation and maintenance, and improving the overall integration of the deep-sea submersible oil pump and cylinder integrated hydraulic press.

[0037] The end cap body 10 serves as the main structure of the oil injection end cap, supporting the oil injection channel 12 and the pipeline assembly channel 13, and directly providing the foundation for the installation and fixation of the valve body structure 02, facilitating operation and maintenance, and reducing the additional space occupied by the pressure-bearing housing; the valve body structure is connected through the first valve body connection port 12a and the second valve body connection port 13a, which ensures that the oil enters the pipeline assembly channel 13 accurately through the oil injection channel 12 and the valve body structure 02, realizing the injection, distribution and flow of hydraulic oil, and avoiding leakage or efficiency loss due to positional deviation.

[0038] Based on the above embodiments, the oil injection channel 12 includes an oil inlet section 121 and an oil guide section 122. The oil inlet section 121 is arranged radially along the end cap body 10, and an oil injection port 11 is formed at one end facing the side. The oil guide section 122 is bent into an L-shape, and one end is connected to the oil inlet section 121, while the other end faces outward to form a first valve body connection port 12a.

[0039] The radially arranged oil inlet section 121 can make full use of the axial thickness of the end cap body 10, shorten the oil transmission distance, and at the same time make the oil injection channel 12 perpendicular to the axis of the end cap body 10, which is convenient for alignment and calibration during processing and assembly. The L-shaped oil guide section 122 makes the layout of the oil injection channel compact, reduces the flow resistance and transmission distance of hydraulic oil in the oil injection channel, and allows the hydraulic oil to quickly pass through the oil injection channel and enter the valve body structure, ensuring the sealing of the oil transmission.

[0040] The oil inlet section 121 and the oil guide section 122 adopt a stepped aperture change, and the two are smoothly transitioned by the inclined oil guide slope 123 to form a continuous flow path. The segmented oil injection channel 12 design can reduce oil turbulence. In the working environment of oil viscosity change under deep water and high pressure, when the oil enters the oil inlet section 121 from the oil injection port 11, it can be guided by the inclined oil guide slope 123 to concentrate the flow of the oil to the oil guide section 122, reducing oil injection resistance and cavitation risk. The inclination angle of the oil guide slope 123 can be set to 30°~45°, and no specific limit is made here.

[0041] Based on the above embodiments, the orifice diameter of the oil inlet section 121 is set to be larger than that of the oil guide section 122; the oil inlet section 121 and the oil guide section 122 adopt a stepped orifice diameter change. The larger orifice diameter of the oil inlet section 121 can ensure that the hydraulic oil has sufficient flow and low flow velocity when entering the end cover body 10, thereby reducing the pressure loss of the hydraulic oil at the oil inlet 11, which helps to quickly fill the oil injection channel 12 during the oil injection process, while avoiding turbulence or air bubbles caused by excessive flow velocity, ensuring the smooth injection of hydraulic oil; the smaller orifice diameter of the oil guide section 122 can play a certain throttling role in the flow of hydraulic oil. By reducing the orifice diameter, the flow velocity and flow rate of hydraulic oil can be effectively controlled, making it more stable when entering the first valve body connection port 12a, avoiding the impact of pressure fluctuations on the sealing and reliability of the valve body structure 02 and the first valve body connection port 12a, and ensuring the stable operation of oil injection in deep water environment.

[0042] Based on the above embodiment, the connection between the oil inlet section 121 and the oil guide section 122 is transitionally connected by an inclined oil guide slope 123. The inclined oil guide slope 123 enables the hydraulic oil to smoothly transition from the oil inlet section 121 to the oil guide section 122, forming a continuous oil flow path, thereby reducing the flow resistance of the hydraulic oil in the oil injection channel 12 and improving the oil injection efficiency. The inclination angle of the oil guide slope 123 can be set to 30°~45°, and no specific limitation is made here.

[0043] Based on the above embodiments, the oil inlet 11 is connected to the external oil supply pipeline through a connector structure. The connector structure is usually set on the oil inlet through a screw-on or plug-in connection. It generally contains sealing elements, such as O-rings and gaskets, which can realize a reliable connection between the oil inlet 11 and the external oil supply pipeline, effectively preventing hydraulic oil loss due to loose connection or leakage, ensuring the stable operation of the deep-sea submersible oil pump cylinder integrated hydraulic press. Moreover, the design of the connector structure makes the connection between the oil inlet 11 and the external oil supply pipeline more flexible, and facilitates installation and disassembly. During assembly, different specifications and types of connector structures can be selected according to actual needs to adapt to external oil supply pipelines with different pipe diameters and pressure levels, which is highly flexible.

[0044] Based on the above embodiments, a valve assembly hole 15 is provided on the outer end face of the end cap body 10. The valve body structure 02 is fixedly connected to the end cap body 10 through the valve assembly hole 15. When the valve body structure 02 is connected to the outer end face of the end cap body 10 through the valve assembly hole 15, threaded connection, bolt connection or other methods can be used to simplify the docking process between the valve body structure 02 and the first valve body connection port 12a and the second valve body connection port 13a. The valve body structure 02 can control the oil delivery, such as controlling the conduction of the oil injection channel 12 and the pipeline assembly channel 13, and controlling the amount and flow rate of oil entering the internal oil supply pipe. Specifically, the valve body structure 02 can be set as a one-way valve. The oil can enter the oil supply pipe 01 through the one-way conduction of the valve body structure 02, avoiding the backflow of oil. At the same time, it can also ensure the rigid connection between the two and improve the stability of the oil circuit seal under deep water and high pressure.

[0045] Based on the above embodiments, the end cap body 10 is provided with a sensor assembly port 18 through the outer end face to the inner end face, and the sensor 03 is fixedly installed in the sensor assembly port 18. The sensor can monitor various parameters of the pressure shell in the deep water environment in real time, such as pressure and humidity. Specifically, the sensor 03 can be set as a water content sensor, located on the outer end face of the end cap body 10, which can monitor the water content inside the pressure shell in real time, thereby timely determining whether a leak has occurred inside the pressure shell. The sensor 03 and the sensor assembly port 18 can be connected by a threaded press-fit, flange seal or other structural forms to ensure the sealing of the connection between the sensor 03 and the end cap body 10.

[0046] Based on the above embodiments, an annular sealing groove 16 is provided on the end face inside the end cap body 10. Specifically, the cross-sectional shape of the sealing groove 16 can be set as rectangular, V-shaped, etc., and is not specifically limited here. In this embodiment, a rectangular sealing groove 16 structure is selected, which can be adapted to the O-ring rubber ring and provide uniform compression sealing, thereby ensuring that the end cap body 10 can effectively block external water infiltration after assembly, while balancing the force and preventing sealing failure under deep water and high pressure.

[0047] Based on the above embodiment, a mounting ring 20 is further provided, the end face of which is fitted against the end face inside the end cap body 10; the end face of the mounting ring 20 is provided with a plurality of first mounting holes 21 arranged in a ring at equal intervals, and the end face inside the end cap body 10 has second mounting holes 17 corresponding to the first mounting holes 21 one by one; the mounting ring 20 serves as a transition piece between the end cap body 10 and the pressure-bearing shell, and is connected to the end cap body 10 through the first mounting holes 21 and the second mounting holes 17, thereby realizing the connection between the two, and during the connection, the end face of the mounting ring 20 fits against the end cap body 10. The end face fitting inside the cover body 10, in conjunction with the sealing element in the sealing groove 16, effectively ensures the sealing performance of the end face at the connection point. In addition, the structure of the first mounting hole 21 and the second mounting hole 17 can be set as bolt hole, threaded hole, pin hole, etc., and fixedly connected with corresponding connecting parts, thereby realizing a multi-hole evenly distributed fixed connection structure, which can enhance the connection rigidity between the end cover and the pressure-bearing shell, disperse the deep water pressure load, avoid deformation or damage caused by excessive local stress, and also facilitate maintaining alignment accuracy during disassembly and maintenance.

[0048] Based on the above embodiments, the first mounting hole 21 and the second mounting hole 17 are coaxially arranged, and the diameter of the first mounting hole 21 is smaller than that of the second mounting hole 17. The coaxial arrangement of the first mounting hole 21 and the second mounting hole 17 ensures accurate alignment and rapid positioning of the mounting ring 20 and the end cap body 10 during assembly, avoiding assembly difficulties or sealing failures caused by hole position deviations. The smaller diameter of the first mounting hole 21 compared to the second mounting hole 17 concentrates the main shear force of the connector in the area of ​​the first mounting hole 21, avoiding stress concentration on the end cap body 10 and extending its service life. A sealing gasket or sealant can be installed in the larger diameter second mounting hole 17 to prevent leakage at the connection due to deep water pressure fluctuations, further improving the sealing reliability of the connection between the end cap body 10 and the pressure-bearing shell.

[0049] 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. An oil injection end cover for a pressure containment housing of a deep submergence oil pump and cylinder integrated hydraulic machine, characterized in that, The oil injection end cover for the deep-sea oil pump and cylinder integrated hydraulic machine pressure shell comprises an end cover body, an oil injection channel and a pipeline assembly channel arranged inside the end cover body, the end cover body comprises a side surface and two end surfaces arranged perpendicularly to the side surface, and the outer end surface is arranged for valve body structure installation. One end of the oil injection channel is arranged open on the side surface to form an oil injection port, and the other end is arranged open on the outer end surface to form a first valve body connecting port; one end of the pipeline assembly channel is arranged open on the inner end surface to form a pipeline assembly port for connecting the oil supply pipeline inside the pressure shell, and the other end is arranged open on the outer end surface to form a second valve body connecting port. The valve body structure is connected to the oil injection channel and the pipeline assembly channel through the first valve body connecting port and the second valve body connecting port.

2. The oil injection end cover for the deep-sea oil pump and cylinder integrated hydraulic machine pressure shell according to claim 1, wherein the oil injection channel comprises an oil inlet section and an oil guide section, the oil inlet section is arranged along the radial direction of the end cover body, and one end of the oil inlet section is arranged open on the side surface to form the oil injection port; the oil guide section is arranged in an L shape, one end of the oil guide section is connected to the oil inlet section, and the other end of the oil guide section is arranged open on the outer end surface to form the first valve body connecting port.

3. The oil injection end cover for the deep-sea oil pump and cylinder integrated hydraulic machine pressure shell according to claim 2, wherein the hole diameter of the oil inlet section is larger than the hole diameter of the oil guide section.

4. The oil injection end cover for the deep-sea oil pump and cylinder integrated hydraulic machine pressure shell according to claim 3, wherein the connection between the oil inlet section and the oil guide section is connected through an inclined oil guide slope surface.

5. The oil injection end cover for the deep-sea oil pump and cylinder integrated hydraulic machine pressure shell according to claim 1, wherein the oil injection port is connected to the external oil supply pipeline through a joint structure.

6. The oil injection end cover for the deep-sea oil pump and cylinder integrated hydraulic machine pressure shell according to claim 1, wherein a valve assembly hole is arranged on the outer end surface of the end cover body, and the valve body structure is fixedly connected to the end cover body through the valve assembly hole. A sensor assembly port is arranged through the end cover body from the outer end surface to the inner end surface, and a sensor is fixedly arranged in the sensor assembly port. An annular sealing groove is arranged on the inner end surface of the end cover body. An installation ring is further arranged, and the end surface of the installation ring is arranged in abutment with the inner end surface of the end cover body. A plurality of first installation holes are arranged at equal intervals on the end surface of the installation ring, and the inner end surface of the end cover body is provided with second installation holes corresponding to the first installation holes. The first installation holes and the second installation holes are coaxially arranged, and the hole diameter of the first installation holes is smaller than the hole diameter of the second installation holes. ​ 7. The oil fill end cap for a deep submergence oil pump cylinder integrated hydraulic machine pressure shell of claim 1, wherein, ​ 8. The oil fill end cap for a deep submergence oil pump cylinder integrated hydraulic machine pressure shell of claim 1, wherein, ​ 9. The oil fill end cap for a deep submergence oil pump cylinder integrated hydraulic machine pressure shell of claim 8, wherein, ​ ​ 10. The oil fill end cap for a deep submergence oil pump cylinder integrated hydraulic machine pressure shell of claim 9, wherein, ​

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