Discharge device for accelerated equivalent testing of aircraft magneto transformers

Abstract

This invention relates to a discharge device for accelerated equivalent testing of aircraft magneto transformers. The discharge device includes three electrodes, an adjusting screw, a fixing screw, three supports, and an insulating base. All three electrodes are plate-shaped. The electrode corrosion of this invention is relatively slow, eliminating the need for frequent replacement of spark plug test pieces during the testing process. By connecting the plate-shaped discharger in series with the spark plug test piece, the evaluation criteria for the life test of the magneto transformer are tightened, accelerated equivalent testing is achieved, the cycle of the aircraft magneto transformer life test is shortened, the reliability of the aircraft magneto transformer life test is improved, and the probability of aircraft magneto transformer failure is reduced.

Description

Technical Field

[0001] This invention relates to the field of performance testing of aircraft magneto transformers for aircraft piston engines, and to a discharge device for accelerated equivalent testing of aircraft magneto transformers. Background Technology

[0002] The aircraft magneto is a core component of the ignition system of a piston-type aircraft engine, and the transformer is a key component of the aircraft magneto. Its function is to ensure the highly reliable and precise operation of the ignition system, enabling the piston-type aircraft engine to operate normally and reliably. To ensure the reliability of the magneto's performance, a reliability life test must be conducted before the magneto leaves the factory. This life test, using the existing aircraft three-needle discharger, requires 600 hours.

[0003] The main problems with using traditional aviation three-needle dischargers are that the life test cycle is relatively long, the cost of test equipment and personnel is high, the redundancy of test indicators is small, and the failure screening rate of magneto transformers is low. Summary of the Invention

[0004] The purpose of this invention is to accelerate the testing of equivalent test methods and plate discharge devices, shorten the cycle of life testing of aircraft magneto transformers, improve the reliability of life testing of aircraft magneto transformers, and reduce the probability of failure of aircraft magneto transformers.

[0005] The technical solution of this invention is:

[0006] Provides a discharge device for accelerated equivalent testing of aircraft magneto transformers.

[0007] The circuit for accelerated equivalent testing of the aircraft magneto transformer includes the aircraft magneto transformer and the spark plug test piece. When the aircraft magneto transformer is working, it provides high voltage to the spark plug test piece. The insulation strength and high voltage output capability of the aircraft magneto transformer can be evaluated based on the working state of the spark plug test piece.

[0008] The discharge device includes three electrodes, an adjusting screw, a fixing screw, three supports, and an insulating base. All three electrodes are plate-shaped electrodes, designated as a first electrode, a second electrode, and a third electrode. Each plate electrode corresponds to a first, second, and third support. The three electrodes are on the same horizontal plane and are fixed to their respective supports. All three electrode supports are fixed to the insulating base. The three electrodes are arranged in a straight line, with the second electrode located between the first and third electrodes. A gap is maintained between the three electrodes. The second electrode has a through hole and is fixedly connected to the second support via a fixing screw. The first electrode has an oblong hole and is adjustablely connected to the first support via an adjusting screw. The third electrode has an oblong hole and is adjustablely connected to the third support via an adjusting screw. The gap between the second electrode and the first and third electrodes is consistent.

[0009] The first and third plate electrodes are connected terminals, allowing the discharge device to be connected in series with the spark plug test piece for the accelerated equivalent test of the aircraft magneto transformer. Adjusting the horizontal distance between the first and third electrodes can adjust the voltage of the discharge device, thus allowing the total operating voltage of the discharge device and the spark plug test piece to be adjusted. The longer the horizontal distance between the first and third electrodes, the higher the voltage of the discharge device and the higher the total operating voltage.

[0010] In this invention, the second plate-shaped electrode is an auxiliary electrode, which forms a gap with the first and third electrodes to effectively reduce the initial breakdown voltage and maintain the stability of the discharge spark.

[0011] Furthermore, the insulation resistance between the second electrode and the first electrode is not less than 500 megohms, and the insulation resistance between the second electrode and the third electrode is not less than 500 MΩ.

[0012] Furthermore, the three electrodes are made of copper plates. Preferably, the three electrodes are 1mm thick copper plates.

[0013] Furthermore, the adjusting screw and the fixing screw are made of brass.

[0014] Furthermore, the three supports are made of brass or zirconium copper.

[0015] Furthermore, the insulating base is an insulating bakelite board.

[0016] Furthermore, the three plate electrodes are on the same plane.

[0017] Furthermore, the contact resistance between the three electrodes and their corresponding supports is less than 0.15Ω.

[0018] Furthermore, the spark plug test piece was simulated using an aviation three-needle discharger.

[0019] Key technical points of this invention:

[0020] The electrode erosion between the electrodes in the plate-shaped discharge device structure is relatively slow, which solves the problem of frequent electrode replacement during the test. By connecting the plate-shaped discharge device in series with the traditional three-needle discharge device for aviation, the assessment criteria for the life test of aviation magneto transformers are tightened, accelerating the equivalent test, shortening the cycle of aviation magneto transformer life test, improving the reliability of aviation magneto transformer life test, and reducing the probability of aviation magneto transformer failure.

[0021] The second plate electrode serves as an auxiliary electrode, effectively reducing the initial breakdown voltage and maintaining stable discharge sparks.

[0022] Plate-shaped electrodes effectively reduce electrode erosion between electrodes.

[0023] The relative distance between the first and third plate electrodes and the second plate electrode can be adjusted to control the discharge spark state and the overall breakdown voltage.

[0024] The advantages of this invention are: it shortens the life test cycle of aircraft magneto transformers, reduces the cost of test equipment and personnel, and improves the reliability of aircraft magneto transformer life tests. It also reduces the probability of aircraft magneto transformer failure. The electrode corrosion of this invention is relatively slow, eliminating the need for frequent replacement of spark plug test pieces during the test process. By using a plate-shaped discharge device connected in series with spark plug test pieces, the assessment criteria for magneto transformer life tests are tightened, accelerating equivalent testing, shortening the life test cycle of aircraft magneto transformers, improving the reliability of aircraft magneto transformer life tests, and reducing the probability of aircraft magneto transformer failure.

[0025] The second plate electrode serves as an auxiliary electrode, effectively reducing the initial breakdown voltage and maintaining stable discharge sparks. The plate electrode also effectively reduces electrode erosion between electrodes.

[0026] The relative distance between the first and third plate electrodes and the second plate electrode can be adjusted to control the discharge spark state and the overall breakdown voltage. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is the circuit schematic diagram of the present invention;

[0029] Wherein: 1 - first electrode, 2 - second electrode, 3 - third electrode, 4 - adjusting screw, 5 - fixing screw, 6 - bracket, 7 - insulating base. Detailed Implementation

[0030] The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. In fact, many different examples may be described, and these examples should not be construed as limited to those set forth herein. Rather, these examples are described so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0031] Provides a discharge device for accelerated equivalent testing of aircraft magneto transformers.

[0032] The circuit for accelerated equivalent testing of the aircraft magneto transformer includes the aircraft magneto transformer and the spark plug test piece. When the aircraft magneto transformer is working, it provides high voltage to the spark plug test piece. The insulation strength and high voltage output capability of the aircraft magneto transformer can be evaluated based on the working state of the spark plug test piece.

[0033] The discharge device includes three electrodes, an adjusting screw, a fixing screw, three supports, and an insulating base. All three electrodes are plate-shaped electrodes, designated as a first electrode, a second electrode, and a third electrode. Each plate electrode corresponds to a first, second, and third support. The three electrodes are on the same horizontal plane and are fixed to their respective supports. All three electrode supports are fixed to the insulating base. The three electrodes are arranged in a straight line, with the second electrode located between the first and third electrodes. A gap is maintained between the three electrodes. The second electrode has a through hole and is fixedly connected to the second support via a fixing screw. The first electrode has an oblong hole and is adjustablely connected to the first support via an adjusting screw. The third electrode has an oblong hole and is adjustablely connected to the third support via an adjusting screw. The gap between the second electrode and the first and third electrodes is consistent.

[0034] The first and third plate electrodes are connected terminals, allowing the discharge device to be connected in series with the spark plug test piece for the accelerated equivalent test of the aircraft magneto transformer. Adjusting the horizontal distance between the first and third electrodes can adjust the voltage of the discharge device, thus allowing the total operating voltage of the discharge device and the spark plug test piece to be adjusted. The longer the horizontal distance between the first and third electrodes, the higher the voltage of the discharge device and the higher the total operating voltage.

[0035] Furthermore, the insulation resistance between the second electrode and the first electrode is not less than 500 megohms, and the insulation resistance between the second electrode and the third electrode is not less than 500 MΩ.

[0036] The three electrodes are made of copper plates, each 1mm thick.

[0037] The adjusting screw and the fixing screw are made of brass.

[0038] The three supports are made of brass.

[0039] The insulating base is an insulating bakelite board. The three plate-shaped electrodes are on the same plane.

[0040] The contact resistance between the three electrodes and their corresponding supports is less than 0.15Ω.

[0041] The spark plug test piece was simulated using an aviation three-needle discharger.

[0042] Descriptions of various advantageous arrangements have been shown for illustrative and descriptive purposes, but such descriptions are not intended to be exclusive or limited to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. Furthermore, different advantageous examples may describe different advantages compared to other advantageous examples. One or more examples have been selected and described in order to best illustrate the principles and practical application of the examples, and to enable those skilled in the art to understand that this disclosure contains various examples with various modifications suitable for the particular intended use.

Claims

1. A discharge device for accelerated equivalent testing of an aircraft magneto transformer, characterized in that: The circuit for accelerated equivalent testing of the aircraft magneto transformer includes the aircraft magneto transformer and the spark plug test piece. When the aircraft magneto transformer is working, it provides high voltage to the spark plug test piece. The insulation strength and high voltage output capability of the aircraft magneto transformer can be evaluated based on the working state of the spark plug test piece. The discharge device includes three electrodes, an adjusting screw, a fixing screw, three supports, and an insulating base. All three electrodes are plate-shaped electrodes, designated as a first electrode, a second electrode, and a third electrode. Each plate electrode corresponds to a first, second, and third support. The three electrodes are on the same horizontal plane and are fixed to their respective supports. All three electrode supports are fixed to the insulating base. The three electrodes are arranged in a straight line, with the second electrode located between the first and third electrodes. A gap is maintained between the three electrodes. The second electrode has a through hole and is fixedly connected to the second support via a fixing screw. The first electrode has an oblong hole and is adjustablely connected to the first support via an adjusting screw. The third electrode has an oblong hole and is adjustablely connected to the third support via an adjusting screw. The gap between the second electrode and the first and third electrodes is consistent. The first and third plate electrodes are connected terminals, allowing the discharge device to be connected in series with the spark plug test piece for the accelerated equivalent test of the aircraft magneto transformer. Adjusting the horizontal distance between the first and third electrodes can adjust the voltage of the discharge device, thus allowing the total operating voltage of the discharge device and the spark plug test piece to be adjusted. The longer the horizontal distance between the first and third electrodes, the higher the voltage of the discharge device and the higher the total operating voltage.

2. The discharge device for accelerated equivalent testing of an aircraft magneto transformer as described in claim 1, characterized in that: The insulation resistance between the second electrode and the first electrode shall not be less than 500 megohms, and the insulation resistance between the second electrode and the third electrode shall not be less than 500 MΩ.

3. The discharge device for accelerated equivalent testing of an aircraft magneto transformer as described in claim 1, characterized in that: The three electrodes are made of copper plates.

4. The discharge device for accelerated equivalent testing of an aircraft magneto transformer as described in claim 1, characterized in that: The adjusting screw and the fixing screw are made of brass.

5. The discharge device for accelerated equivalent testing of an aircraft magneto transformer as described in claim 1, characterized in that: The three supports are made of brass or zirconium copper.

6. The discharge device for accelerated equivalent testing of an aircraft magneto transformer as described in claim 1, characterized in that: The insulating base is an insulating bakelite board.

7. The discharge device for accelerated equivalent testing of an aircraft magneto transformer as described in claim 1, characterized in that: The three plate electrodes are in the same plane.

8. The discharge device for accelerated equivalent testing of an aircraft magneto transformer as described in claim 1, characterized in that: The contact resistance between the three electrodes and their corresponding supports is less than 0.15Ω.

9. The discharge device for accelerated equivalent testing of an aircraft magneto transformer as described in claim 1, characterized in that: The spark plug test piece was simulated using an aviation three-needle discharger.

10. The discharge device for accelerated equivalent testing of an aircraft magneto transformer as described in claim 3, characterized in that: The three electrodes are made of 1mm thick copper plates.

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