Batch oil seal device for engine fuel servo actuator

Abstract

The application provides a batch oil sealing device of an engine fuel servo actuator, which is used for oil sealing of the actuator and comprises an oil sealing system, a valve system and a controller; the valve system comprises a first valve, a second valve and a third valve, which are all two-position three-way pneumatic electromagnetic reversing valves; the oil sealing system alternately supplies oil to a rod cavity and a rodless cavity of the actuator; the controller is connected with the oil sealing system and the valve system and is used for controlling oil output of the oil sealing system and a state of the valve system. The batch oil sealing device of the engine fuel servo actuator alternately supplies oil to the rod cavity and the rodless cavity of the actuator by switching the state of the valve system, completely discharges fuel in the actuator after multiple cycles, and realizes efficient oil sealing of the actuator; the first oil distributor and the second oil distributor are arranged, so that the oil sealing device can simultaneously seal multiple actuators; the upper computer, the switch and the man-machine interface are arranged, so that an operator can master the state of the oil sealing device and operate the oil sealing device.

Description

Technical Field

[0001] This invention relates to a batch oil seal device for an engine fuel servo actuator. Background Technology

[0002] The engine fuel servo actuator is an important component of the fuel system of a civilian turbofan engine, providing hydraulic power to the engine's geometric channel area. After completing the engine test or control system test, the fuel servo actuator should be removed from the engine or test fixture and sealed with oil to prevent corrosion during storage.

[0003] Currently, fuel servo actuators in civilian turbofan engines mostly use individual oil seals, which require pressureless filling of each seal, resulting in low efficiency, incomplete sealing, and often residual fuel.

[0004] Therefore, it is necessary to improve the commonly used oil sealing tools and design a new device that can automatically and quickly seal different types of fuel-operated mechanisms in batches. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of low efficiency, incomplete oil sealing and fuel residue in the oil sealing device of the engine fuel servo actuator in the prior art. The present invention provides an oil sealing device for the engine fuel servo actuator, which has the advantages of batch operation, complete oil sealing and easy operation and control.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] This invention provides a batch oil sealing device for an engine fuel servo actuator, used in an oil sealing actuator, comprising an oil sealing system, a valve system, and a controller;

[0008] The valve system includes a first valve, a second valve, and a third valve, all of which are two-position three-way pneumatic solenoid directional valves.

[0009] The inlet of the first valve is connected to the sealing system, the first outlet of the first valve is connected to the inlet of the third valve, and the second outlet of the first valve is connected to the inlet of the second valve; the first outlet of the second valve is connected to the rod chamber of the actuator, and the first outlet of the third valve is connected to the rodless chamber of the actuator; the second outlets of both the second valve and the third valve are unused.

[0010] When the inlet of the first valve is connected to the second outlet of the first valve, the inlet of the second valve is connected to the first outlet of the second valve, and the inlet of the third valve is connected to the second outlet of the third valve, the valve system is in the first state, and the oil sealing system supplies oil to the rod chamber of the actuator.

[0011] When the inlet of the first valve is connected to the first outlet of the first valve, the inlet of the second valve is connected to the second outlet of the second valve, and the inlet of the third valve is connected to the first outlet of the third valve, the valve system is in the second state, and the oil sealing system supplies oil to the rodless chamber of the actuator.

[0012] The controller is connected to the oil sealing system and the valve system, and is used to control the oil output of the oil sealing system and the status of the valve system.

[0013] In this technical solution, the controller controls the valve system and the oil sealing system. By switching the state of the valve system, the oil sealing system alternately supplies oil to the rod chamber and rodless chamber of the actuator. After multiple cycles, the fuel inside the actuator is completely discharged, thus achieving efficient oil sealing of the actuator.

[0014] Preferably, there are multiple actuators; a first oil separator is provided between the rod chamber of the actuator and the first outlet of the second valve, and a second oil separator is provided between the rodless chamber of the actuator and the first outlet of the third valve.

[0015] In this preferred technical solution, the first oil distributor and the second oil distributor simultaneously inject the sealing oil supplied by the sealing oil system into multiple actuators, so that the oil sealing device can simultaneously seal multiple actuators.

[0016] Preferably, the oil sealing system includes an oil pump, and the controller is connected to the oil pump; when the valve system is in the first state or the second state, the controller controls the oil pump to be in a ready-to-start state; when the valve system is not in the first state or the second state, the controller controls the oil pump to be in a non-startable state and the valve system to be in a pending reset state.

[0017] In this preferred technical solution, the controller controls the oil pump and valve system to ensure that the oil sealing device accurately supplies oil to the rod-side or rodless-side chamber of the actuator when it starts running, thus avoiding discrepancies between the oil sealing process and the design.

[0018] Preferably, the oil sealing device further includes a human-machine interface; the human-machine interface includes a pump indicator light and a pump start button, and the pump indicator light and the pump start button are electrically connected to the controller;

[0019] When the valve system is in the first state or the second state, the controller controls the pump indicator light to be green, and the pump start button is in the usable state;

[0020] When the valve system is not in the first or second state, the controller controls the pump indicator light to be red, and the pump start button is in a pending reset state.

[0021] In this preferred technical solution, the human-machine interface facilitates the control of the oil sealing device and makes it easier for the operator to check whether the oil pump can be started.

[0022] Preferably, the human-machine interface further includes a reset button, which is electrically connected to the controller; when the reset button is pressed, the controller controls the valve system to return to the first state, the pump indicator light turns green, and the pump start button becomes usable.

[0023] In this preferred technical solution, a reset button is provided to facilitate the adjustment of the oil seal device, so that even if the oil seal device is not in the normal standby state, it can be quickly detected and adjusted to normal.

[0024] Preferably, the human-machine interface further includes a first state button and a second state button, the first state button and the second state button being electrically connected to the controller;

[0025] When the first state button is pressed, the controller controls the valve system to be in the first state when the oil seal device starts running; when the second state button is pressed, the controller controls the valve system to be in the second state when the oil seal device starts running.

[0026] In this preferred technical solution, a first state button and a second state button are provided to facilitate the adjustment of the oil sealing device, so that the valve system is in the state desired by the operator before the oil sealing device starts to operate.

[0027] Preferably, the human-machine interface further includes a mode switching button, which is electrically connected to the controller and is used to switch the operating mode of the oil sealing device, wherein the operating mode of the oil sealing device is automatic mode or manual mode.

[0028] In this preferred technical solution, a mode switching button is provided to facilitate the adjustment of the oil sealing device, allowing the oil sealing device to quickly switch between automatic and manual modes.

[0029] Preferably, the human-machine interface further includes a setting window, a first display window, and a display switch; the display switch is electrically connected to the controller.

[0030] When the oil seal device is in automatic mode, the setting window sets the operating time of the valve system in the current state, and the remaining operating time of the valve system in the current state is displayed in the first display window.

[0031] When the remaining running time of the valve system in its current state reaches zero, the state of the valve system automatically switches once, and the state of the valve system is displayed on the display switch.

[0032] In this preferred technical solution, a setting window, a first display window, and a display switch are provided, which makes it convenient for the operator to set the operating time of the valve system in the current state and to know the remaining amount of operating time of the valve system in the current state. It also makes it convenient for the operator to know the status of the valve system, thereby improving the automation level of the oil sealing device.

[0033] Preferably, the human-machine interface further includes a second display window and a switch, the switch being electrically connected to the controller; when the oil sealing device is in manual mode, the switch is used to switch the state of the valve system, and the operating time of the valve system in the current state is displayed in the second display window.

[0034] In this preferred technical solution, the operating status of the oil sealing device can be manually adjusted, and a second display window is provided to facilitate the operator to monitor the operating time of the valve system in the current state, thereby improving the automation level of the oil sealing device.

[0035] Preferably, the default value for the operating time of the valve system in the current state, set in the setting window, is 20 seconds.

[0036] Preferably, the oil sealing device further includes a host computer and a switch, the human-machine interface is disposed on the host computer, and the switch is disposed between the host computer and the controller.

[0037] In this preferred technical solution, the host computer carries the human-machine interface, and the switch facilitates variable mapping and data exchange between the human-machine interface and the controller.

[0038] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0039] The positive and progressive effects of this invention are as follows:

[0040] The aforementioned batch oil sealing device for engine fuel servo actuators includes a controller that controls the valve system and the oil sealing system. By switching the valve system state, the oil sealing system alternately supplies oil to the rod-side and rodless-side chambers of the actuator. After multiple cycles, the fuel inside the actuator is completely discharged, achieving efficient oil sealing of the actuator. By setting a first oil distributor and a second oil distributor, the oil sealing device can simultaneously seal multiple actuators. By setting a host computer, a switch, and a human-machine interface, the operator can easily monitor the status of the oil sealing device and operate it. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of a batch oil sealing device for an engine fuel servo actuator according to an embodiment of the present invention.

[0042] Figure 2 This is a schematic diagram of the electrical connection relationship of the batch oil seal device of the engine fuel servo actuator according to an embodiment of the present invention.

[0043] Figure 3 This is a schematic diagram of the controller logic for the batch oil sealing device of the engine fuel servo actuator according to an embodiment of the present invention.

[0044] Figure 4 This is a schematic diagram of the human-machine interface of the batch oil sealing device for the engine fuel servo actuator according to an embodiment of the present invention.

[0045] Explanation of reference numerals in the attached figures

[0046] Oil sealing system 1, oil pump 101;

[0047] First valve 2;

[0048] Second valve 3;

[0049] Third valve 4;

[0050] First oil separator 5;

[0051] Second oil distributor 6;

[0052] Actuator 7, with rod chamber 71 and rodless chamber 72;

[0053] Human-machine interface 8, pump indicator light 801, pump start button 802, reset button 803, first state button 804, second state button 805, mode switch button 806, setting window 807, first display window 808, display switch 809, second display window 810, switch 811;

[0054] Host computer 9;

[0055] Switch 10;

[0056] Controller 11. Detailed Implementation

[0057] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0058] like Figures 1 to 2 The diagram shows a batch oil sealing device for the engine fuel servo actuator in this embodiment. This batch oil sealing device for the engine fuel servo actuator, used for sealing the actuator, includes an oil sealing system 1, a valve system, and a controller 11. The valve system includes a first valve 2, a second valve 3, and a third valve 4, all of which are two-position three-way pneumatic solenoid directional valves. The inlet of the first valve 2 is connected to the oil sealing system 1, the first outlet of the first valve 2 is connected to the inlet of the third valve 4, and the second outlet of the first valve 2 is connected to the inlet of the second valve 3. The first outlet of the second valve 3 is connected to the rod chamber 71 of the actuator 7, and the first outlet of the third valve 4 is connected to the rodless chamber 72 of the actuator 7. The second outlets of the second valve 3 and the third valve 4 are both unused. When the inlet of the first valve 2 is connected to the first valve... When the second outlet of valve 2 is connected, the inlet of valve 3 is connected to the first outlet of valve 3, and the inlet of valve 4 is connected to the second outlet of valve 4, the valve system is in the first state, and the sealing system 1 supplies oil to the rod chamber 71 of actuator 7. When the inlet of valve 2 is connected to the first outlet of valve 2, the inlet of valve 3 is connected to the second outlet of valve 3, and the inlet of valve 4 is connected to the first outlet of valve 4, the valve system is in the second state, and the sealing system 1 supplies oil to the rodless chamber 72 of actuator 7. Controller 11 is connected to the sealing system 1 and the valve system to control the oil output of the sealing system 1 and the state of the valve system. Controller 11 controls the valve system and the sealing system 1, and by switching the valve system state, the sealing system 1 alternately supplies oil to the rod chamber 71 and the rodless chamber 72 of actuator 7. After multiple cycles, the fuel inside actuator 7 is completely discharged, achieving efficient oil sealing of actuator 7.

[0059] There are multiple actuators 7; a first oil distributor 5 is provided between the rod chamber 71 of the actuator 7 and the first outlet of the second valve 3, and a second oil distributor 6 is provided between the rodless chamber 72 of the actuator 7 and the first outlet of the third valve 4. The first oil distributor 5 and the second oil distributor 6 simultaneously inject the sealing oil supplied by the sealing oil system 1 into multiple actuators 7, so that the oil sealing device can seal multiple actuators 7 at the same time.

[0060] like Figure 3The diagram shows the controller logic of the batch oil sealing device for the engine fuel servo actuator in this embodiment. The oil sealing system 1 includes an oil pump 101, and a controller 11 is connected to the oil pump 101. When the valve system is in a first state or a second state, the controller 11 controls the oil pump 101 to be in a ready-to-start state. When the valve system is not in the first state or the second state, the controller 11 controls the oil pump 101 to be in a non-startable state and the valve system to be in a pending reset state. By controlling the oil pump 101 and the valve system, the controller 11 ensures that the oil sealing device accurately supplies oil to the rod chamber 71 or rodless chamber 72 of the actuator 7 when it starts running, avoiding discrepancies between the oil sealing process and the design.

[0061] like Figure 4 The diagram shows the human-machine interface (HMI) of the batch oil sealing device for the engine fuel servo actuator in this embodiment. The oil sealing device also includes an HMI 8; the HMI 8 includes a pump indicator light 801 and a pump start button 802, which are electrically connected to the controller 11. When the valve system is in the first or second state, the controller 11 controls the pump indicator light 801 to be green, and the pump start button 802 to be usable; when the valve system is not in the first or second state, the controller 11 controls the pump indicator light 801 to be red, and the pump start button 802 to be in a pending reset state. The HMI 8 facilitates the control of the oil sealing device and allows the operator to check whether the oil pump 101 can be started.

[0062] The human-machine interface 8 also includes a reset button 803, which is electrically connected to the controller 11. When the reset button 803 is pressed, the controller 11 controls the valve system to the first state, the pump indicator light 801 turns green, and the pump start button 802 becomes usable. The reset button 803 facilitates the adjustment of the oil seal device, so that even if the oil seal device is not in the normal standby state, it can be quickly detected and adjusted to normal.

[0063] The human-machine interface 8 also includes a first state button 804 and a second state button 805, which are electrically connected to the controller 11. When the first state button 804 is pressed, the controller 11 controls the valve system to be in the first state when the oil sealing device starts operating. When the second state button 805 is pressed, the controller 11 controls the valve system to be in the second state when the oil sealing device starts operating. The first state button 804 and the second state button 805 facilitate the adjustment of the oil sealing device, ensuring that the valve system is in the operator's desired state before the oil sealing device starts operating.

[0064] The human-machine interface 8 also includes a mode switching button 806, which is electrically connected to the controller 11 and used to switch the operating mode of the oil sealing device, which can be either automatic or manual. The mode switching button 806 facilitates adjustment of the oil sealing device, allowing it to quickly switch between automatic and manual modes.

[0065] The human-machine interface 8 also includes a setting window 807, a first display window 808, and a display switch 809; the display switch 809 is electrically connected to the controller 11; when the oil seal device is in automatic mode, the setting window 807 sets the operating time of the valve system in the current state, and the remaining operating time of the valve system in the current state is displayed in the first display window 808; when the remaining operating time of the valve system in the current state reaches zero, the valve system state automatically switches once, and the display switch 809 displays the valve system state. The setting window 807, the first display window 808, and the display switch 809 facilitate the operator in setting the operating time of the valve system in the current state and in monitoring the remaining operating time, while also facilitating the operator's monitoring of the valve system state, thus improving the automation level of the oil seal device operation.

[0066] The human-machine interface 8 also includes a second display window 810 and a switch 811, which is electrically connected to the controller 11. When the oil seal device is in manual mode, the switch 811 is used to switch the state of the valve system, and the operating time of the valve system in the current state is displayed in the second display window 810. The operating state of the oil seal device can be manually adjusted, and the second display window 810 facilitates the operator's monitoring of the valve system's operating time in the current state, thus improving the automation level of the oil seal device operation.

[0067] The default value for the operating time of the valve system in the current state, as set in window 807, is 20 seconds.

[0068] The oil sealing device also includes a host computer 9 and a switch 10. The human-machine interface 8 is mounted on the host computer 9, and the switch 10 is located between the host computer 9 and the controller 11. The host computer 9 hosts the human-machine interface 8, and the switch 10 facilitates variable mapping and data exchange between the human-machine interface 8 and the controller 11.

[0069] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A batch oil sealing device for an engine fuel servo actuator, used in an oil sealing actuator, comprising an oil sealing system, a valve system, and a controller; The valve system includes a first valve, a second valve, and a third valve, all of which are two-position three-way pneumatic solenoid directional valves. The inlet of the first valve is connected to the sealing system, the first outlet of the first valve is connected to the inlet of the third valve, and the second outlet of the first valve is connected to the inlet of the second valve; the first outlet of the second valve is connected to the rod chamber of the actuator, the first outlet of the third valve is connected to the rodless chamber of the actuator, and the second outlets of both the second valve and the third valve are unused. When the inlet of the first valve is connected to the second outlet of the first valve, the inlet of the second valve is connected to the first outlet of the second valve, and the inlet of the third valve is connected to the second outlet of the third valve, the valve system is in the first state, and the oil sealing system supplies oil to the rod chamber of the actuator. When the inlet of the first valve is connected to the first outlet of the first valve, the inlet of the second valve is connected to the second outlet of the second valve, and the inlet of the third valve is connected to the first outlet of the third valve, the valve system is in the second state, and the oil sealing system supplies oil to the rodless chamber of the actuator. The controller is connected to the oil sealing system and the valve system, and is used to control the oil output of the oil sealing system and the status of the valve system; The oil sealing system includes an oil pump, and the controller is connected to the oil pump. When the valve system is in the first state or the second state, the controller controls the oil pump to be in a ready-to-start state. When the valve system is not in the first state or the second state, the controller controls the oil pump to be in a non-startable state and the valve system to be in a pending reset state. The oil sealing device also includes a human-machine interface; The human-machine interface includes a pump indicator light and a pump start button, which are electrically connected to the controller. When the valve system is in the first state or the second state, the controller controls the pump indicator light to be green, and the pump start button is in the usable state; When the valve system is not in the first or second state, the controller controls the pump indicator light to be red, and the pump start button is in a pending reset state.

2. The oil sealing device as described in claim 1, characterized in that, The actuators are multiple; a first oil separator is provided between the rod chamber of the actuator and the first outlet of the second valve, and a second oil separator is provided between the rodless chamber of the actuator and the first outlet of the third valve.

3. The oil sealing device as described in claim 1, characterized in that, The human-machine interface also includes a reset button, which is electrically connected to the controller. When the reset button is pressed, the controller controls the valve system to return to the first state, the pump indicator light turns green, and the pump start button becomes usable.

4. The oil seal device as described in claim 1, characterized in that, The human-machine interface also includes a first status button and a second status button, which are electrically connected to the controller. When the first state button is pressed, the controller controls the valve system to be in the first state when the oil seal device starts running; when the second state button is pressed, the controller controls the valve system to be in the second state when the oil seal device starts running.

5. The oil sealing device as described in claim 1, characterized in that, The human-machine interface also includes a mode switching button, which is electrically connected to the controller and is used to switch the operating mode of the oil sealing device, which is either automatic or manual.

6. The oil sealing device as described in claim 5, characterized in that, The human-machine interface further includes a setting window, a first display window, and a display switch; the display switch is electrically connected to the controller. When the oil seal device is in automatic mode, the setting window sets the operating time of the valve system in the current state, and the remaining operating time of the valve system in the current state is displayed in the first display window. When the remaining running time of the valve system in its current state reaches zero, the state of the valve system automatically switches once, and the state of the valve system is displayed on the display switch.

7. The oil seal device as described in claim 5, characterized in that, The human-machine interface also includes a second display window and a switch, the switch being electrically connected to the controller; When the oil seal device is in manual mode, the switch is used to switch the state of the valve system, and the operating time of the valve system in the current state is displayed in the second display window.

8. The oil sealing device as described in claim 6, characterized in that, The default value for the operating time of the valve system in the current state, set within the setting window, is 20 seconds.

9. The oil seal device as described in claim 1, characterized in that, The oil sealing device also includes a host computer and a switch. The human-machine interface is located on the host computer, and the switch is located between the host computer and the controller.

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