An additively manufactured aerial eha pressurized tank high pressure line integrated assembly

Abstract

The application discloses an additive manufacturing aviation EHA pressurized tank high-pressure oil path integrated assembly, and the SLM formed high-integration electro-hydraulic actuator assembly is integrally formed and comprises an additive manufacturing integrated assembly, two pressure sensor interfaces, two safety anti-air pocket valve interfaces, a low-pressure maintaining valve interface, four oil outlets, motor pump side mounting screw holes, actuator side mounting screw holes, a tank cavity, four oil paths, two pressure measuring oil paths and two oil supplementing oil paths. The additive manufacturing forming technology is applied to the forming manufacturing of the aviation EHA pressurized tank high-pressure oil path integrated assembly, the pipeline of the valve block of the high-pressure oil path is split, the modal valve block and the pressurized tank are designed to be integrated through wall attachment, the valve block between the actuator and the pressurized tank and between the motor pump and the pressurized tank is greatly lightened. A large number of process holes and joints are reduced, and the possibility of leakage and pressure loss is reduced.

Description

Technical Field

[0001] The embodiments of the present application belong to the field of hydraulic transmission control, and in particular to an additively manufactured aviation EHA boost tank high-pressure oil circuit integrated component. Background Art

[0002] An electro-hydraulic actuator (EHA) uses a motor to drive a hydraulic pump to provide system flow. Flow is altered by adjusting the motor speed and / or pump displacement. It is a highly integrated component. Its high integration and lightweight design have led to its widespread use in the aerospace industry. Because high-pressure air and oil come into direct contact, large amounts of air dissolve into the fluid, which can easily cause cavitation in hydraulic pumps. Therefore, many EHAs utilize pressurized air-proof and self-supplied oil tanks. However, traditional oil tanks are either split or connected to external oil lines. This, combined with the numerous interfaces, can lead to leaks and hinder the system's lightweight integration. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention addresses the problem that aviation EHA booster tanks are difficult to integrate with the oil circuit under traditional processing technology and need to be connected through valve blocks. In order to achieve the integration and lightweight of integrated components, additive manufacturing technology is used to provide an additively manufactured aviation EHA booster tank high-pressure oil circuit integrated component design scheme.

[0004] The technical solution adopted by the present invention is as follows: The additively manufactured aviation EHA boost tank high-pressure oil circuit integrated component is an indivisible, one-piece formed whole, including: an additively manufactured integrated component, a first pressure sensor interface, a first safety anti-cavitation valve interface, a second pressure sensor interface, a second safety anti-cavitation valve interface, a low-pressure maintaining valve interface, a first oil port, a motor pump side mounting screw hole, a second oil port, a third oil port, a fourth oil port, an actuator side mounting screw hole, a tank cavity, a first oil circuit, a second oil circuit, a third oil circuit, a fourth oil circuit, a first pressure measuring oil circuit, a second pressure measuring oil circuit, a first oil replenishment oil circuit, and a second oil replenishment oil circuit. One side of the additive manufacturing integrated component is connected to the actuator through the mounting screw hole on the actuator side, and the other side is connected to the motor pump through the mounting screw hole on the motor pump side. It is respectively connected to the pressure sensor, the safety anti-cavitation valve, and the low-pressure maintaining valve through the first pressure sensor interface / the second pressure sensor interface, the first safety anti-cavitation valve interface / the second safety anti-cavitation valve interface, and the low-pressure maintaining valve interface. It is connected to the motor pump C port and the wet motor through the first oil port, to the actuator rod cavity through the second oil port, to the actuator rodless cavity through the third oil port, and to the motor pump B port through the fourth oil port. The first oil circuit connects the fuel tank cavity with the first and second safety anti-cavitation valves. The second oil circuit connects the fourth oil port and the second pressure sensor. The third oil circuit connects the second oil port and the second pressure sensor. The second and third oil circuits are interconnected. The fourth oil circuit connects the third oil port and the first pressure sensor. The first pressure measuring oil circuit connects the fourth oil circuit and the first pressure sensor. The second pressure measuring oil circuit connects the second oil circuit and the second pressure sensor. The first oil supply circuit connects the fuel tank cavity and the low-pressure maintaining valve. The second oil supply circuit connects the low-pressure maintaining valve and the first oil port. The fuel tank boost module is designed within the fuel tank cavity.

[0005] Furthermore, the modal valve block and the boost tank are integrated into one through the wall attachment design, and the oil circuit and the plug-in component interface are integrally formed with the boost tank through additive manufacturing to reduce weight, without the need for mechanical connection.

[0006] Furthermore, the second oil port, the third oil port, and the fourth oil port bodies face the same direction and are connected to the actuator through mounting screw holes on the actuator side.

[0007] Furthermore, the pressure sensor is used to monitor the pressure of the rod chamber and the rodless chamber of the actuator in real time respectively. The third oil port is the rod chamber, the second oil port is the rodless chamber, and high pressure relief is performed through a safety anti-cavitation valve.

[0008] Furthermore, the first oil port has the same opening direction as the mounting screw hole cavity on the motor pump side, and is located on the opposite side of the second oil port, the third oil port, and the fourth oil port integrated block, and is arranged symmetrically.

[0009] Furthermore, a low-pressure maintaining valve is used to maintain a constant pressure at the first oil port, and the low-pressure maintaining valve interface is in the same direction as the pressure sensor interface, the safety anti-cavitation valve interface, and the oil tank cavity opening.

[0010] Furthermore, the first pressure sensor interface, the first safety anti-cavitation valve interface, the second pressure sensor interface, and the second safety anti-cavitation valve interface cavity have the same opening direction and are the same as the tank cavity. They are located at the bottom of the additive manufacturing integrated component tank, facing downward to reduce installation space.

[0011] Furthermore, the length and width of the boost tank high-pressure oil circuit integrated assembly are mainly determined by the boost tank and the wall-mounted oil circuit, and the height is mainly determined by the height of the boost tank.

[0012] Furthermore, when the actuator of the integrated component is running, the areas of the rodless cavity and the rod cavity are different, resulting in different flow rates in the two cavities. Oil circulation is achieved through the second oil circuit and the third oil circuit, and oil is replenished through the oil replenishment circuit.

[0013] Furthermore, the oil circuit, valve block, screw holes, etc. of the integrated component are designed and formed integrally with the integrated component, and the system does not require (or rarely requires) additional oil circuit connection when in use.

[0014] By adopting the above scheme, the beneficial effects of the present invention are as follows:

[0015] This invention provides an additively manufactured integrated assembly for the high-pressure oil circuit of an EHA (Electrical Handling Assembly) supercharged fuel tank. This assembly utilizes additive manufacturing technology, which offers a high degree of freedom in forming, to form the assembly. The high-pressure oil circuit's valve block and piping are separated, and the modal valve block and supercharged fuel tank are integrated via a wall attachment. This significantly reduces the weight of the valve blocks between the actuator and supercharged fuel tank, and between the motor pump and supercharged fuel tank. This also eliminates a large number of process holes and joints, minimizing the likelihood of leakage and pressure loss. This is of great significance for achieving lightweight and integrated aviation EHAs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 It is a first isometric view of an additively manufactured aviation EHA boost tank high-pressure oil circuit integrated assembly provided by the present invention;

[0018] Figure 2 It is a second isometric view of an additively manufactured aviation EHA boost tank high-pressure oil circuit integrated assembly provided by the present invention;

[0019] Figure 3 This is a first isometric view of the flow path of an additively manufactured aviation EHA boost tank high-pressure oil circuit integrated assembly provided by the present invention;

[0020] Figure 4 This is a second isometric view of the flow path of an additively manufactured aviation EHA boost tank high-pressure oil circuit integrated assembly provided by the present invention;

[0021] In the figure, the additive manufacturing integrated component 1, the first pressure sensor interface 2, the first safety anti-cavitation valve interface 3, the second pressure sensor interface 4, the second safety anti-cavitation valve interface 5, the low-pressure maintaining valve interface 6, the first oil port 7, the motor pump side mounting screw hole 8, the second oil port 9, the third oil port 10, the fourth oil port 11, the actuator side mounting screw hole 12, the oil tank cavity 13, the first oil circuit 14, the second oil circuit 15, the third oil circuit 16, the fourth oil circuit 17, the first pressure measuring oil circuit 18, the second pressure measuring oil circuit 19, the first oil supply circuit 20, and the second oil supply circuit 21. DETAILED DESCRIPTION

[0022] like Figure 1-4 As shown, an embodiment of the present invention provides an additively manufactured aviation EHA pressurized fuel tank high-pressure oil circuit integrated component, including: an additively manufactured integrated component 1, a first pressure sensor interface 2, a first safety anti-cavitation valve interface 3, a second pressure sensor interface 4, a second safety anti-cavitation valve interface 5, a low-pressure maintaining valve interface 6, a first oil port 7, a motor pump side mounting screw hole 8, a second oil port 9, a third oil port 10, a fourth oil port 11, an actuator side mounting screw hole 12, a tank cavity 13, a first oil circuit 14, a second oil circuit 15, a third oil circuit 16, a fourth oil circuit 17, a first pressure measuring oil circuit 18, a second pressure measuring oil circuit 19, a first oil replenishment circuit 20, and a second oil replenishment circuit 21.

[0023] One side of the additive manufacturing integrated component 1 is connected to the actuator through the actuator side mounting screw hole 12. When the actuator is actuated outward, the oil in the actuator rod chamber is supplied to the gear pump through the second oil port 9, the third oil circuit 16, the second oil circuit 15, and the fourth oil port 11. After being pumped out by the gear pump, it enters the rodless chamber of the actuator. After the oil in the rod chamber is squeezed out under pressure, it passes through the second oil port 9, the third oil circuit 16, the second oil circuit 15, and then enters the gear pump through the fourth oil port 11, the second oil circuit 15, the third oil circuit 16, and the second oil port 9 to complete the oil circulation. When the actuator is actuated inward, the oil in the actuator rodless chamber is pumped out by the gear pump and enters the actuator rod chamber through the fourth oil port 11, the second oil circuit 15, the third oil circuit 16, and the second oil port 9. After the rodless chamber is pressurized, the oil enters the gear pump to complete the oil circulation. The other side of the additive manufacturing integrated assembly 1 is connected to the motor pump via mounting screw holes 8 on the motor pump side. Because the rodless and rod cavities of the actuator are unequal in area, when the motor pump needs to replenish oil (i.e., the actuator actuates outward), oil flows from the oil tank cavity 13 through the first replenishment oil passage 20, the low-pressure maintenance valve interface 6, the second replenishment oil passage 21, and the first oil port 7 before entering the three-port motor pump for replenishment. When the motor pump needs to return oil (i.e., the actuator actuates outward), the oil returns to the oil tank cavity 13 via the first oil port 7, the second replenishment oil passage 21, the low-pressure maintenance valve interface 6, and the first replenishment oil passage 20. Simultaneously, the first oil port 7 connects to the motor side, supplying oil to the wet-type motor. The system pressure is monitored in real time through the first pressure sensor, the first pressure measuring oil circuit 18, the second pressure sensor, and the second pressure measuring oil circuit 19. When the system is overloaded with high pressure, the oil in the rodless chamber returns to the oil tank via the third oil port 10, the fourth oil circuit 17, the first safety anti-cavitation valve interface 3, and the first oil circuit 14 to relieve pressure; the oil in the rod chamber returns to the oil tank via the second oil port 9, the third oil circuit 16, the second safety anti-cavitation valve interface 5, and the first oil circuit 14 to relieve pressure.

[0024] In the present embodiment of the application, the length and width of the integrated component are mainly determined by the oil tank cavity 13 and the attached wall oil path, and the height is mainly determined by the height of the oil tank cavity 13. Therefore, during the design, it is necessary to first determine the relevant dimensions of the oil tank cavity 13, and then lay out the remaining oil paths and component interfaces.

[0025] In the present embodiment of the application, the length and width of the integrated component are mainly determined by the oil tank cavity 13 and the attached wall oil path, and the height is mainly determined by the height of the oil tank cavity 13. Therefore, during the design, it is necessary to first determine the relevant dimensions of the oil tank cavity 13, and then lay out the remaining oil paths and component interfaces.

[0026] In the present embodiment of the application, the first oil port 7 is mainly used to supply oil to the three-port pump and for cooling the wet motor, so a low-pressure maintaining valve is required to maintain a stable pressure.

[0027] In the present embodiment of the application, pressure sensors are arranged at the second oil port 9 and the third oil port 10 to monitor the system pressure in real time. When a high-pressure overload occurs, the pressure can be automatically released through the safety anti-cavitation valve.

[0028] In this embodiment of the application, unlike traditional processing methods, the additively manufactured boost tank high-pressure oil circuit integrated assembly integrates the modal valve block and boost tank through a wall attachment design. This significantly reduces the weight of the valve blocks between the actuator and boost tank, and between the motor pump and boost tank. This also eliminates a large number of process holes and joints, reducing the possibility of leakage and pressure loss, and eliminating (or rarely requiring) additional oil circuit connections during use.

[0029] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the contents disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art that are not disclosed in this application.

[0030] It will be understood that the present application is not limited to the exact construction that has been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof.

Claims

1. An additively manufactured aviation EHA boost tank high-pressure oil circuit integrated component, characterized in that: The additively manufactured aviation EHA boost tank high-pressure oil circuit integrated component is an inseparable, one-piece formed whole, including: an additively manufactured integrated component, a first pressure sensor interface, a first safety anti-cavitation valve interface, a second pressure sensor interface, a second safety anti-cavitation valve interface, a low-pressure maintaining valve interface, a first oil port, a motor pump side mounting screw hole, a second oil port, a third oil port, a fourth oil port, an actuator side mounting screw hole, a tank cavity, a first oil circuit, a second oil circuit, a third oil circuit, a fourth oil circuit, a first pressure measuring oil circuit, a second pressure measuring oil circuit, a first oil replenishment oil circuit and a second oil replenishment oil circuit; one side of the additively manufactured integrated component is connected to the actuator through the actuator side mounting screw hole, and the other side is connected to the motor pump through the motor pump side mounting screw hole, and the first pressure sensor interface / second pressure sensor interface, the first safety anti-cavitation valve interface / second safety anti-cavitation valve interface, the low-pressure maintaining valve interface The holding valve interface is respectively connected to two pressure sensors, a safety anti-cavitation valve, and a low-pressure maintaining valve, and is connected to the motor pump C port and the wet motor through the first oil port, the actuator rod chamber through the second oil port, the actuator rodless chamber through the third oil port, and the motor pump B port through the fourth oil port; the first oil circuit connects the oil tank cavity and the first safety anti-cavitation valve and the second safety anti-cavitation valve, the second oil circuit connects the fourth oil port and the second pressure sensor, the third oil circuit connects the second oil port and the second pressure sensor, and the second oil circuit and the third oil circuit are connected to each other, the fourth oil circuit connects the third oil port and the first pressure sensor, the first pressure measuring oil circuit connects the fourth oil circuit and the first pressure sensor, the second pressure measuring oil circuit connects the second oil circuit and the second pressure sensor, the first oil supply oil circuit connects the oil tank cavity and the low-pressure maintaining valve, and the second oil supply oil circuit connects the low-pressure maintaining valve and the first oil port; the oil tank boosting module is designed in the oil tank cavity.

2. The additively manufactured aviation EHA boost tank high-pressure oil circuit integrated component according to claim 1, characterized in that: The traditional hydraulic valve block and the boost tank are integrated into one through the wall design, and the oil circuit and plug-in component interfaces are integrally formed with the boost tank through additive manufacturing to reduce weight, without the need for mechanical connection.

3. The additively manufactured aviation EHA boost tank high-pressure oil circuit integrated component according to claim 1, characterized in that: The second oil port, the third oil port, and the fourth oil port have the same orientation and are connected to the actuator through mounting screw holes on the actuator side.

4. The additively manufactured aviation EHA boost tank high-pressure oil circuit integrated component according to claim 1, characterized in that: The pressure sensor is used to monitor the pressure of the rod cavity and the rodless cavity of the actuator in real time respectively. The third oil port is the rod cavity, the second oil port is the rodless cavity, and high pressure relief is performed through the safety anti-cavitation valve.

5. The additively manufactured aviation EHA boost tank high-pressure oil circuit integrated component according to claim 1, characterized in that: The first oil port has the same opening direction as the mounting screw hole cavity on the motor pump side and is located on the opposite side of the second oil port, the third oil port, and the fourth oil port integrated block, and is arranged symmetrically.

6. The additively manufactured aviation EHA boost tank high-pressure oil circuit integrated assembly according to claim 1, characterized in that: The low-pressure maintaining valve is used to maintain a constant pressure at the first oil port, and the low-pressure maintaining valve interface is in the same direction as the pressure sensor interface, the safety anti-cavitation valve interface, and the oil tank cavity opening.

7. The additively manufactured aviation EHA boost tank high-pressure oil circuit integrated component according to claim 1, characterized in that: The first pressure sensor interface, the first safety anti-cavitation valve interface, the second pressure sensor interface and the second safety anti-cavitation valve interface cavity have the same opening direction and are the same as the tank cavity. They are located at the bottom of the additive manufacturing integrated component tank, facing downward to reduce installation space.

8. The additively manufactured aviation EHA boost tank high-pressure oil circuit integrated component according to claim 1, characterized in that: The length and width of the boost tank high-pressure oil circuit integrated assembly are mainly determined by the boost tank and the wall-attached oil circuit, and the height is mainly determined by the height of the boost tank.

9. The additively manufactured aviation EHA boost tank high-pressure oil circuit integrated component according to claim 1, characterized in that: The rodless cavity and the rod cavity of the actuator have different areas, resulting in different flow rates in the two cavities. Oil circulation is achieved through the second oil circuit and the third oil circuit, and oil is replenished through the oil replenishment circuit.

10. The additively manufactured aviation EHA boost tank high-pressure oil circuit integrated component according to claim 1, characterized in that: All oil circuits, valve blocks and screw holes are designed as an integrated component, and the system does not require additional oil circuit connections when in use.

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