Reverse thrust control valve test board

Abstract

A backstepping control valve test board comprises a test box body, the test box body is provided with a control valve connecting port, an indicating lamp, an oscilloscope connecting port, a switch, a power supply control key, an input power supply interface and an EAU connecting port, and components on the test box body are connected through a test circuit. The reverse thrust control valve sensor signal conversion time and the valve actuation time are tested by the reverse thrust control valve sensor signal conversion time testing device.

Description

Technical Field

[0001] The utility model belongs to the field of aviation, and in particular to the field of aviation equipment testing. Background Art

[0002] The thrust reverse control valve (3810056-) is used to control the engine thrust reverse actuator, and the proximity switch sensor is used to monitor and control the valve in the correct position. The CMM manual has test requirements for this sensor. However, the test content of the manual only provides the test method using the control module test box (3909001) as the test equipment, without other circuit connection information. When repairing this machine, it is impossible to test it directly, and the corresponding test equipment needs to be made.

[0003] Chinese patent document CN202211430532.X discloses "A civil aviation PW4000 series engine thrust reverser device test control box", which includes a box body, a circuit board and a control panel. The functional components on the control panel include a main power switch, a cable connection socket, an indicator light array, a sensor channel selection knob, an LCD display, a feedback voltage display, a drive voltage display, a signal generator, a thrust reverser release / retraction control button, a DCV control channel selection knob and a thrust reverser retraction lock and unlock control button.

[0004] Chinese patent document CN202123398729.3 discloses "A thrust reverse control valve test box" including a hydraulic test bench, the hydraulic test bench including a hydraulic source, a pressure supply port, a pressure regulating valve, a DC power supply, a pressure gauge and a connecting pipeline, the thrust reverse control valve test box including a box body and a test control board arranged in the box body, an indicator light arranged on the box body and connected to the test control board, a connecting cable and a connector assembly, the power supply electrical plug of the thrust reverse control valve is connected to the DC power supply, the STOW port and the DEPLOY port are respectively connected to the pressure supply port of the hydraulic test bench through connecting pipelines, the switch plug of the thrust reverse control valve is connected to the test control board through a connector assembly and a connecting cable, the test control board is used to obtain the status information of the switch of the thrust reverse control valve and display it through the indicator light; it can conveniently and accurately test the switch of the aircraft thrust reverse control valve.

[0005] However, the prior art lacks tests on the sensor signal conversion time and the valve actuation time. Utility Model Content

[0006] The utility model aims to provide a thrust reverse control valve test bench to solve the technical problem of valve actuation time test.

[0007] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0008] A reverse thrust control valve test bench, characterized in that it includes a test box body, on which a control valve connection port, an indicator light, an oscilloscope connection port, a switch, a power control key, an input power interface, and an EAU connection port are provided, and the components on the test box body are connected through a test circuit.

[0009] Furthermore, the control valve connection port includes: pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, wherein pin 7 is not referenced, and pin 5 and pin 6 are grounded.

[0010] Furthermore, the EAU connection port includes: pin 1, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, and pin 12, wherein pin 3 and pin 4 are grounded.

[0011] Further, the switch includes switch S1 and switch S2, and the oscilloscope connection port includes interface A and interface B.

[0012] Furthermore, the EAU connector pins 1, 6, 7, and 8 are connected to the indicator light input power interface, the EAU connector pin 5 is connected to interface A and the indicator light, and the EAU connector pin 3 is connected to interface B.

[0013] Further, pin 1, pin 2, pin 3, and pin 4 of the control valve connector are respectively connected to pin 12, pin 11, pin 10, and pin 9 on the EAU connector, wherein pin 1 and pin 2 of the control valve connector are respectively connected to pin 12 and pin 11 on the EAU connector through switch S1, and pin 3 and pin 4 of the control valve connector are respectively connected to pin 10 and pin 9 on the EAU connector through switch S2.

[0014] Furthermore, when the switches S1 and S2 in the test circuit are in the closed state, the pins 9 and 11 of the EAU connector are connected to a 150 ohm resistor and then grounded, and the pins 10 and 12 of the EAU connector are connected to a 100 ohm resistor and then grounded.

[0015] Further, pin 1, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, and pin 12 of the EAU connection port in the test circuit are respectively connected to pin 1, pin 30, pin 12, pin 3, pin 21, pin 22, pin 23, pin 9, pin 8, pin 7, and pin 6 of the EAU body.

[0016] The technical solution of the utility model has the following advantages:

[0017] 1. This test box can be used to intuitively test the reverse thrust control valve sensor signal conversion time and valve actuation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the test box of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the test circuit of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the EAU connection port of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the valve connection port of the utility model. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the utility model, a thrust reverse control valve test bench of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1~Figure 4 As shown, a thrust reverse control valve test bench of the utility model includes a test box body 101, on which a control valve connection port 102, an indicator light 103, an oscilloscope connection port 104, a switch 105, a power control key 106, an input power interface 107, and an EAU connection port 108 are provided, and the components on the test box body 101 are connected through a test circuit. Among them, the valve connection port 102 is J2, and the EAU connection port 108 is J1.

[0024] Specifically, the input power interface 107 is connected to a 28 VDC power supply.

[0025] Specifically, the oscilloscope connection port 104 includes an interface A and an interface B, through which the oscilloscope is connected.

[0026] Specifically, the valve connection port 102 is connected to the reverse thrust control valve to be tested, and the reverse thrust control valve is connected to the hydraulic system according to the CMM requirements.

[0027] Specifically, the EAU connection port 108 is connected to the EAU body P1-A (process part 65-73706).

[0028] Specifically, the switch 105 includes a switch S1 and a switch S2.

[0029] During the specific implementation of this application, the test circuit is connected:

[0030] The control valve connection port 102 includes: pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, wherein pin 7 is not referenced, and pin 5 and pin 6 are grounded.

[0031] The EAU connection port 108 includes pin 1, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, and pin 12, wherein pin 3 and pin 4 are grounded.

[0032] Pin 1, pin 6, pin 7, pin 8 of the EAU connection port 108 are connected to the power input interface 107 of the indicator light 103, pin 5 of the EAU connection port 108 is connected to interface A and the indicator light 103, and pin 3 of the EAU connection port 108 is connected to interface B.

[0033] Pin 1, pin 2, pin 3, and pin 4 of the control valve connector 102 are respectively connected to pin 12, pin 11, pin 10, and pin 9 on the EAU connector 108, wherein pin 1 and pin 2 of the control valve connector 102 are respectively connected to pin 12 and pin 11 on the EAU connector 108 through switch S1, and pin 3 and pin 4 of the control valve connector 102 are respectively connected to pin 10 and pin 9 on the EAU connector 108 through switch S2.

[0034] When the switches S1 and S2 in the test circuit are in the closed state, the pins 9 and 11 of the EAU connector 108 are connected to a 150 ohm resistor and then grounded, and the pins 10 and 12 of the EAU connector 108 are connected to a 100 ohm resistor and then grounded.

[0035] Pin 1, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, and pin 12 of the EAU connector 108 in the test circuit are respectively connected to pin 1, pin 30, pin 12, pin 3, pin 21, pin 22, pin 23, pin 9, pin 8, pin 7, and pin 6 of the EAU body.

[0036] Testing process:

[0037] Step 1: Turn on the 28VDC power switch on the test bench;

[0038] Step 2: Turn switches S21 and S23 to the ON position;

[0039] Step 3: Perform the test according to the operating requirements of the CMM test section of the test piece. When the proximity switch is actuated into place, the indicator light on the test box should light up.

[0040] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A thrust reverse control valve test bench, characterized in that: The invention comprises a test box body (101), wherein the test box body (101) is provided with a control valve connection port (102), an indicator light (103), an oscilloscope connection port (104), a switch (105), a power control key (106), an input power interface (107), and an EAU connection port (108), and components on the test box body (101) are connected via a test circuit.

2. The thrust reverser control valve test bench according to claim 1, characterized in that: The control valve connection port (102) comprises: pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, and pin 7, wherein pin 7 is not referenced, and pin 5 and pin 6 are grounded.

3. The thrust reverser control valve test bench according to claim 2, characterized in that: The EAU connection port (108) comprises: pin 1, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, and pin 12, wherein pin 3 and pin 4 are grounded.

4. The thrust reverser control valve test bench according to claim 3, characterized in that: The switch (105) comprises a switch S1 and a switch S2, and the oscilloscope connection port (104) comprises an interface A and an interface B.

5. The thrust reverser control valve test bench according to claim 4, characterized in that: Pin 1, pin 6, pin 7, pin 8 of the EAU connection port (108) are connected to the input power interface (107) of the indicator light (103), pin 5 of the EAU connection port (108) is connected to interface A and the indicator light (103), and pin 3 of the EAU connection port (108) is connected to interface B.

6. The thrust reverser control valve test bench according to claim 5, characterized in that: Pin 1, pin 2, pin 3, and pin 4 of the control valve connector (102) are respectively connected to pin 12, pin 11, pin 10, and pin 9 on the EAU connector (108), wherein pin 1 and pin 2 of the control valve connector (102) are respectively connected to pin 12 and pin 11 on the EAU connector (108) via switch S1, and pin 3 and pin 4 of the control valve connector (102) are respectively connected to pin 10 and pin 9 on the EAU connector (108) via switch S2.

7. The thrust reverser control valve test bench according to claim 6, characterized in that: When the switch S1 and the switch S2 in the test circuit are in the closed state, the pins 9 and 11 of the EAU connection port (108) are connected to a 150 ohm resistor and then grounded, and the pins 10 and 12 of the EAU connection port (108) are connected to a 100 ohm resistor and then grounded.

8. The thrust reverser control valve test bench according to claim 7, characterized in that: Pin 1, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, and pin 12 of the EAU connection port (108) in the test circuit are respectively connected to pin 1, pin 30, pin 12, pin 3, pin 21, pin 22, pin 23, pin 9, pin 8, pin 7, and pin 6 of the EAU body.

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