In-situ detector for anti-icing assembly

Abstract

The utility model provides an anti-icing assembly in-situ detector. Two ends of an anti-icing valve control switch K are respectively connected with a second detection plug interface 3 and an interface 4; a control switch of the voltmeter is connected with an anti-icing valve power supply check switch K4; the negative electrode end of the voltmeter, the negative electrode end of the ohmmeter, the first detection plug interface I and the second detection plug interface I are respectively grounded; the positive electrode end of the voltmeter is connected with the first end of a voltmeter switch K2, and the second end of the voltmeter switch K2, the second detection plug interface II and the second end of the ohmmeter switch K3 are respectively connected with a power supply through an inspection tester power switch K1 and a first detection plug interface II; the positive electrode end of the ohmmeter is connected with the first end of the ohmmeter switch K3; the first detection plug is connected with the anti-icing temperature control box; and the second detection plug is respectively connected with the anti-icing valve and the pipeline temperature sensor. And the detector can detect the working performance of the anti-icing assembly, so that faults can be found in time, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft anti-icing device detection, in particular to an anti-icing component in-situ detector. Background Art

[0002] The anti-icing assembly consists of an anti-icing temperature control box, a pipe temperature sensor, and an anti-icing valve. Its main function is to adjust the outlet temperature of the turbine cooler in the environmental control system. When the outlet temperature of the turbine cooler is lower than 4±2℃, the anti-icing valve is opened to draw a proper amount of hot air from the system to mix with it to avoid ice at the outlet of the turbine cooler. When the outlet temperature of the turbine cooler is higher than 4±2℃, the anti-icing valve is closed to prevent the outlet temperature of the turbine cooler from being too high, which will cause the cooling efficiency of the environmental control system to decrease, and ensure that the outlet temperature of the turbine cooler is around 4℃.

[0003] In the prior art, the anti-icing valve is checked by observing whether the anti-icing valve is actuated during engine test to check the working condition of the anti-icing assembly. On the one hand, the anti-icing valve is installed close to the aircraft air inlet, which increases the risk of engine test during inspection. On the other hand, during engine test, the temperature in the environmental control system pipeline cannot be accurately obtained, resulting in the inability to accurately judge the working performance of the anti-icing assembly. Utility Model Content

[0004] The utility model provides an in-situ detector for an anti-icing component. The detector can detect the working performance of the anti-icing component, thereby facilitating the discovery of fault problems and improving maintenance efficiency.

[0005] The detector includes: a detector power switch K1, a voltmeter switch K2, an ohmmeter switch K3, an anti-icing valve power supply check switch K4, an anti-icing valve control switch K, a voltmeter, an ohmmeter, a first detection plug and a second detection plug;

[0006] The two ends of the anti-icing valve control switch K are respectively connected to the second detection plug interface 3 and interface 4;

[0007] The control switch of the voltmeter is connected to the first detection plug interface 6 and the second detection plug interface 6 through the anti-icing valve power supply check switch K4;

[0008] The negative terminal of the voltmeter, the negative terminal of the ohmmeter, the first detection plug interface 1, and the second detection plug interface 1 are grounded respectively;

[0009] The positive terminal of the voltmeter is connected to the first terminal of the voltmeter switch K2, and the second terminal of the voltmeter switch K2, the second detection plug interface 2, and the second terminal of the ohmmeter switch K3 are connected to the power supply through the inspection instrument power switch K1 and the first detection plug interface 2 respectively;

[0010] The positive terminal of the ohmmeter is connected to the first terminal of the ohmmeter switch K3;

[0011] The first detection plug is connected to the anti-icing temperature control box; the second detection plug is respectively connected to the anti-icing valve and the pipeline temperature sensor.

[0012] It should be further explained that the anti-icing valve control switch K is a rotary switch, and the anti-icing valve control switch K is configured with a 2°C gear, a 6°C gear, an open gear and a closed gear.

[0013] It should be further explained that a fuse is connected to the output end of the power supply.

[0014] It should be further explained that it also includes: a 16U plug; a second detection plug is connected to the anti-icing valve and the pipeline temperature sensor respectively through the 16U plug.

[0015] It should be further explained that the voltmeter is provided with a voltage display screen.

[0016] The ohmmeter is provided with a resistance display.

[0017] It can be seen from the above technical solutions that the utility model has the following advantages:

[0018] The anti-icing component in-situ detector involved in the utility model can realize the inspection of the working performance of the anti-icing component on the aircraft, and can quickly and accurately locate the fault point when the anti-icing component fails, solving the problem that the working performance of the anti-icing component cannot be accurately judged in the prior art. When the anti-icing component fails, the anti-icing component in-situ detector involved in the utility model is convenient for locating the fault point, improving the efficiency of equipment maintenance and guarantee. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the in-situ detector for anti-icing components;

[0021] Figure 2 This is a schematic diagram of the front panel of the anti-icing component in-situ detector. DETAILED DESCRIPTION

[0022] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in conjunction with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0023] like Figure 1 and Figure 2 As shown, the anti-icing component in-situ detector provided by the utility model includes: a detector power switch K1, a voltmeter switch K2, an ohmmeter switch K3, an anti-icing valve power supply check switch K4, an anti-icing valve control switch K, a voltmeter V, an ohmmeter Ω, a first detection plug X1 and a second detection plug X2.

[0024] The anti-icing valve control switch K is a rotary switch, and is equipped with 2°C gear, 6°C gear, open gear and closed gear. The inspection instrument power switch K1, the voltmeter switch K2 and the ohmmeter switch K3 are conversion switches respectively.

[0025] The voltmeter V is equipped with a voltage display screen. The ohmmeter Ω is equipped with a resistance display screen, which is convenient for testers to observe the test results.

[0026] The internal connection relationship of the anti-icing component in-situ detector is as follows: the two ends of the anti-icing valve control switch K are respectively connected to the second detection plug X2 interface three and interface four; the voltmeter control switch is connected to the first detection plug interface six and the second detection plug interface six through the anti-icing valve power supply check switch K4; the negative end of the voltmeter, the negative end of the ohmmeter, the first detection plug X1 interface one and the second detection plug X2 interface one are respectively grounded; the positive end of the voltmeter is connected to the first end of the voltmeter switch K2, the second end of the voltmeter switch K2, the second detection plug X2 interface two, and the second end of the ohmmeter switch K3 are respectively connected to the power supply through the detector power switch K1 and the first detection plug X1 interface two; the positive end of the ohmmeter is connected to the first end of the ohmmeter switch K3; the first detection plug X1 is connected to the anti-icing temperature control box; the second detection plug X2 is respectively connected to the anti-icing valve and the pipeline temperature sensor.

[0027] Specifically, the second detection plug X2 is connected to the anti-icing valve and the pipeline temperature sensor respectively through the 16U plug X3.

[0028] The working principle of the anti-icing component in-situ detector involved in the utility model is based on the following:

[0029] 1. Check the working performance of the anti-ice temperature control box. When the anti-ice component is powered on, when a resistor with a resistance value greater than Ra is connected to the D and E jacks of the 16U plug X3, the anti-ice valve should close. When a resistor with a resistance value less than Rb is connected, the anti-ice valve should open. Based on this, the working performance of the anti-ice temperature control box can be judged. The resistance values of resistor Ra and resistor Rb can be set according to the actual detection process, and the specific resistance values are not limited.

[0030] 2. Check the working performance of the pipeline temperature sensor. Measure the resistance value of the pipeline temperature sensor through the D and E jacks of the 16U plug X3, and compare it with the resistance value at the ambient temperature where the pipeline temperature sensor is located. Based on this, the working performance of the pipeline temperature sensor can be judged. The resistance value-temperature correspondence table is shown in Table 1.

[0031] Table 1

[0032]

[0033] 3. Check the working performance of the anti-ice valve. When the anti-ice component is powered on, when the D and E pins of the 16U plug X3 are open, the anti-ice valve is in the fully closed state; when the D and E jacks of the 16U plug X3 are short-circuited, the anti-ice valve should be in the fully open state. By changing the on-off state of the D and E pins, the working performance of the anti-ice valve can be judged.

[0034] The following is an illustration with specific detection implementation methods.

[0035] 1. The implementation method for checking the working performance of the anti-ice temperature control box is as follows: Turn on the power switch K1 of the checker, and change the resistance value between the D and E pins of the anti-ice temperature control box through the anti-ice valve control switch K. When the anti-ice valve control switch K is placed in the "2°C" position, the resistance value R of the D and E pins 2℃ = 1005Ω < Rb, and the anti-ice valve opens.

[0036] When the anti-ice valve control switch K is placed in the "6°C" position, the resistance value R of the D and E pins 6℃ = 1025Ω > Ra, and the anti-ice valve closes, which can prove that the anti-ice temperature control box works normally.

[0037] 2. The implementation method for checking the working performance of the pipeline temperature sensor is as follows: When the engine is not started and the aircraft is stationary for 2 hours, it can be considered that the pipeline temperature is equivalent to the ambient temperature. At this time, turn on the power switch K1 of the checker and the ohmmeter switch K3, measure the resistance value Ri of the pipeline temperature sensor through the ohmmeter Ω, and compare the result with the resistance value RI at the corresponding temperature in Table 1. When the error is within the range, it can be determined that the working performance of the pipeline temperature sensor is normal.

[0038] 3. The anti-icing valve working performance check is implemented as follows: turn on the power switch K1 of the inspection instrument, when the knob anti-icing valve control switch K is in the "open" position, there is a short circuit between the D and E pins of the anti-icing temperature control box, and the anti-icing valve opens; when the knob anti-icing valve control switch K is in the "closed" position, there is an open circuit between the D and E pins, and the anti-icing valve closes, based on which it can be determined that the anti-icing valve is working normally.

[0039] 4. The fault point location function is implemented as follows: when a certain type of anti-icing component fails, first determine whether the temperature sensor is normal according to the method of checking the working performance of the pipeline temperature sensor.

[0040] If the temperature sensor is normal, according to the method of checking the working performance of the anti-icing temperature control box, set the anti-icing valve control switch K to the "2℃" position, turn on the voltmeter switch K2, set the anti-icing valve power supply check switch K4 to the "open" position, and use the voltmeter V to measure the voltage Va of the anti-icing valve pin A (open the anti-icing valve circuit), set the anti-icing valve control switch K to the "6℃" position, set the anti-icing valve power supply check switch K4 to the "closed" position, and use the voltmeter V to measure the voltage Vb of the anti-icing valve pin B (open the anti-icing valve circuit).

[0041] If Va and Vb are both close to VCC, it can be determined that the anti-icing valve is faulty, or the line between the 16U plug X3 and the anti-icing valve is faulty, and the anti-icing temperature control box is working normally. If at least one of Va and Vb is abnormal, it can be determined that the anti-icing temperature control box is faulty.

[0042] It can be seen that the anti-icing component in-situ detector involved in the utility model can realize the inspection of the working performance of the anti-icing component on the aircraft, and can quickly and accurately locate the fault point when the anti-icing component fails, solving the problem that the working performance of the anti-icing component cannot be accurately judged in the prior art. When the anti-icing component fails, the anti-icing component in-situ detector involved in the utility model is convenient for locating the fault point and improving the efficiency of equipment maintenance and support.

[0043] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An in-situ detector for anti-icing components, characterized in that: include: Inspection instrument power switch K1, voltmeter switch K2, ohmmeter switch K3, anti-icing valve power supply inspection switch K4, anti-icing valve control switch K, voltmeter, ohmmeter, first detection plug and second detection plug; The two ends of the anti-icing valve control switch K are respectively connected to the second detection plug interface 3 and interface 4; The control switch of the voltmeter is connected to the first detection plug interface 6 and the second detection plug interface 6 through the anti-icing valve power supply check switch K4; The negative terminal of the voltmeter, the negative terminal of the ohmmeter, the first detection plug interface 1, and the second detection plug interface 1 are grounded respectively; The positive terminal of the voltmeter is connected to the first terminal of the voltmeter switch K2, and the second terminal of the voltmeter switch K2, the second detection plug interface 2, and the second terminal of the ohmmeter switch K3 are connected to the power supply through the inspection instrument power switch K1 and the first detection plug interface 2 respectively; The positive terminal of the ohmmeter is connected to the first terminal of the ohmmeter switch K3; The first detection plug is connected to the anti-icing temperature control box; the second detection plug is respectively connected to the anti-icing valve and the pipeline temperature sensor.

2. The anti-icing component in-situ detector according to claim 1, characterized in that: The anti-icing valve control switch K is a rotary switch, and the anti-icing valve control switch K is configured with a 2°C gear, a 6°C gear, an open gear and a closed gear.

3. The anti-icing component in-situ detector according to claim 1, characterized in that: A fuse is connected to the output of the power supply.

4. The anti-icing component in-situ detector according to claim 1, characterized in that: It also includes: a 16U plug; a second detection plug is connected to the anti-icing valve and the pipeline temperature sensor respectively through the 16U plug.

5. The anti-icing component in-situ detector according to claim 1, characterized in that: The voltmeter is provided with a voltage display screen.

6. The anti-icing component in-situ detector according to claim 1, characterized in that: The ohmmeter is provided with a resistance display.

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