Additive-manufactured aviation EHA pressurization oil tank high-pressure oil way integrated assembly

Abstract

The invention discloses an additive-manufactured aviation EHA pressurization oil tank high-pressure oil way integrated assembly. A high-integration electro-hydraulic actuator assembly formed through SLM is an integrally-formed whole. Comprising an additive manufacturing integrated assembly, two pressure sensor interfaces, two safe cavitation-preventing valve interfaces, a low-pressure maintaining valve interface, four oil outlets, a motor pump side mounting screw hole, an actuator side mounting screw hole, an oil tank cavity, four oil ways, two pressure measuring oil ways and two oil supplementing oil ways. The additive manufacturing forming technology is applied to forming manufacturing of the aviation EHA pressurization oil tank high-pressure oil way integrated assembly, a pipeline of a valve block of a high-pressure oil way is split, a modal valve block and the pressurization oil tank are designed into a whole through a wall attachment, and the weight of the valve blocks between an actuator and the pressurization oil tank and the weight of the valve blocks between a motor pump and the pressurization oil tank are greatly reduced. And a large number of process holes and joints are reduced, and the possibility of leakage and the pressure loss are 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 booster tank high-pressure oil circuit integrated component. Background Art

[0002] The Electrical-Hydraulic Actuator (EHA) is a highly integrated component that drives a hydraulic pump through a motor to provide system flow, adjusts the motor speed and (or) the pump displacement to change the flow. It is widely used in the aerospace field due to its high integration and lightweight characteristics. Since a large amount of air dissolves into the oil when high-pressure air is in direct contact with the oil, it is easy to cause cavitation of the hydraulic pump. Therefore, many EHAs use pressurized air-proof oil tanks and self-supplied oil tanks. However, traditional oil tanks are all split or connected to external oil circuits. On the one hand, this may cause leakage due to the presence of more interfaces, and on the other hand, it is not conducive to the lightweight integration of the system. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention aims to solve the problem that the aviation EHA booster tank is difficult to integrate with the oil circuit under traditional processing technology and needs to be connected through a valve block. In order to achieve the integration and lightweight of the 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, integrally 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. The motor pump C port is connected to the wet motor through the first oil port, the actuator rod cavity is connected through the second oil port, the actuator rodless cavity is connected through the third oil port, and the motor pump B port is connected through the fourth oil port. The first oil circuit connects the oil tank cavity with 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 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 replenishment oil circuit connects the oil tank cavity and the low pressure maintaining valve, and the second oil replenishment oil circuit connects the low pressure maintaining valve and the first oil port. The oil tank boost module is designed in the oil tank cavity.

[0005] Furthermore, the modal valve block and the boost tank are integrated into one by the wall attachment design, and the oil circuit and the plug-in component interface are integrally formed with the boost tank by additive manufacturing to reduce weight, and no mechanical connection is required.

[0006] Furthermore, 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.

[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 cavity of the mounting screw hole 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 have the same opening direction of the cavity and are the same as the tank cavity, and 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-attached 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 unequal, 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 in an integrated manner 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] The present invention provides an additively manufactured aviation EHA booster tank high-pressure oil circuit integrated component, which applies additive manufacturing technology with high forming freedom to the forming and manufacturing of the aviation EHA booster tank high-pressure oil circuit integrated component, splits the pipeline of the valve block of the high-pressure oil circuit, and integrates the modal valve block and the booster tank through the wall attachment design, so that the valve block between the actuator and the booster tank, and between the motor pump and the booster tank can achieve a large weight reduction. It also reduces a large number of process holes and joints, reduces the possibility of leakage and pressure loss, and is of great significance to the realization of lightweight and integrated aviation EHA. 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 booster 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 booster tank high pressure oil circuit integrated assembly provided by the present invention;

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

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

[0021] In the figure, the additive manufacturing housing 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 replenishing oil circuit 20, and the second oil replenishing oil 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 oil circuit 20, and a second oil replenishment oil circuit 21.

[0023] One side of the additive manufacturing integrated component 1 is connected to the actuator through the mounting screw hole 12 on the actuator side. When the actuator is actuated outward, the oil in the rod chamber of the actuator supplies oil to the gear pump via the second oil port 9, the third oil circuit 16, the second oil circuit 15, and the fourth oil port 11, and enters the rodless chamber of the actuator after being pumped out by the gear pump. After the oil in the rod chamber is squeezed out under pressure, it enters the gear pump through the second oil port 9, the third oil circuit 16, the second oil circuit 15 and then through the fourth oil port 11 to complete the oil circulation; when the actuator is actuated inward, the oil in the rodless chamber of the actuator is pumped out through the gear pump and enters the rod chamber of the actuator 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 component 1 is connected to the motor pump through the motor pump side mounting screw hole 8. Since the area of ​​the rodless cavity and the rod cavity of the actuator are not equal, when the motor pump needs to replenish oil (i.e. the actuator moves outward), the oil enters the three-port motor pump from the oil tank cavity 13 through the first oil replenishment oil circuit 20, the low-pressure maintenance valve 6, the second oil replenishment oil circuit 21, and the first oil port 7 for oil replenishment; when the motor pump needs to return oil (i.e. the actuator moves outward), the oil returns to the oil tank cavity 13 through the first oil port 7, the second oil replenishment oil circuit 21, the low-pressure maintenance valve 6, and the first oil replenishment oil circuit 20. At the same time, the first oil port 7 is connected to the motor side to supply oil to the wet motor. The system pressure is monitored in real time through the first pressure sensor 2, the first pressure measuring oil circuit 18, the second pressure sensor 4, 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 3, and the first oil circuit 14 for pressure relief; 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 5, and the first oil circuit 14 for pressure relief.

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

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

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

[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, and when a high-pressure overload occurs, the pressure can be automatically released through the safety anti-cavitation valve.

[0028] In the present embodiment of the application, different from the traditional processing method, in the additive manufacturing forming supercharged oil tank high pressure oil circuit integrated assembly, the modal valve block and the supercharged oil tank are designed as one through the wall attachment, so that the valve block between the actuator and the supercharged oil tank, and between the motor pump and the supercharged oil tank can achieve a significant weight reduction. In addition, a large number of process holes and joints are reduced, the possibility of leakage and pressure loss are reduced, and no (or very few) additional oil circuit connections are required during use.

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

[0030] It will be appreciated 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 booster tank high-pressure oil circuit integrated component, characterized in that: The additively manufactured aviation EHA pressurized fuel tank high-pressure oil circuit integrated component is an indivisible, integrally 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 through 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 with 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 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 replenishment oil circuit connects the oil tank cavity and the low-pressure maintaining valve, and the second oil replenishment 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 booster tank high-pressure oil circuit integrated component according to claim 1, characterized in that: The traditional hydraulic valve block and the booster tank are integrated into one through the wall design, and the oil circuit and the plug-in component interface are integrally formed with the booster tank through additive manufacturing to reduce weight, and no mechanical connection is required.

3. The additively manufactured aviation EHA booster 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 booster 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 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.

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

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