Rapid fault positioning device for relay

Abstract

The utility model relates to the field of airplane power distribution system device protection, in particular to a rapid fault positioning device for a relay. Through design of a relay pin clamp, relay line connection and cooperation with access of a power supply and a buzzer, a relay rapid detection mode is realized, a secondary fault is prevented from being influenced by repeated welding and desoldering in a fault confirmation process, the fault confirmation efficiency can be improved through the relay rapid fault positioning device, and introduction of a new fault is avoided.

Description

Technical Field

[0001] The utility model relates to the field of aircraft power distribution system device protection, in particular to a rapid fault locating device for a relay. Background Art

[0002] With the rapid development of aircraft power distribution system devices, more and more types of relays are used in conventional power distribution devices. The performance of relays is related to the reliability of aircraft electrical equipment.

[0003] Relay failure is one of the most common modes of system failure in conventional power distribution devices. Currently, when a suspected relay failure occurs on a product, in order to further confirm the failure, the relay is removed individually, wires are welded to the relay pins, the wires are connected, and a multimeter is used to measure. This process involves repeated welding and desoldering, which is rather cumbersome.

[0004] In summary, a simple device for quickly locating relay faults is needed. Summary of the invention

[0005] The utility model provides a device for fast fault locating of relays, aiming at realizing the function of fast fault locating of relays by adopting a direct plug-in design without welding wires to relay pins in detecting relay faults.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A device for fast fault location of a relay, the device comprising: a plurality of relay positioning bases arranged on a device panel for fixing different types of relays, and a 28V DC control power supply and a test element arranged inside the device;

[0008] Two test terminals are arranged on the relay positioning base; the test element is connected to the two test terminals on the relay positioning base.

[0009] Furthermore, two control terminals are arranged on the relay positioning base, and the DC control power supply is connected to the two control terminals on the relay positioning base.

[0010] Furthermore, the control end of the relay positioning base includes a power input end and a power ground end, and the power input ends of multiple relays are connected in parallel, and the power ground ends are connected in parallel.

[0011] Furthermore, the test end of the relay positioning base includes a test input end and a test output end, and the test input ends of multiple relays are connected in parallel, and the test output ends are connected in parallel.

[0012] Furthermore, the pins corresponding to each group of normally open contacts of the relay on the relay positioning base are connected in series, so that all the normally open contacts of the relay form a path.

[0013] Furthermore, the relay positioning base adopts a semi-open resiliently deformable socket structure.

[0014] The utility model provides a relay rapid fault location device, which is simple to judge the fault mode, adds a buzzer in the circuit, designs the wiring according to the principle of each different type of relay, and judges the quality of the relay according to the sound of the buzzer, which makes fault location more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a relay base model;

[0016] Figure 2 This is the appearance diagram of the relay rapid fault locating device;

[0017] Figure 3 It is a relay type;

[0018] Figure 4 It is the principle of J500 relay. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings.

[0020] The technical solution of the utility model is realized through the following process:

[0021] First, sort out the commonly used relay types, design the relay base model according to the 3D model of each relay, and determine the relay types such as Figure 3 shown.

[0022] Second, design the wiring principle of the device according to the type of relay and the principle of fault detection. Taking the J500 relay as an example, the principle is as follows Figure 4 As shown, X1 and X2 are 28V DC power input and output, A1, A2, A3 are the switch contacts of each circuit respectively, there are 3 circuits in total, and the circuit test can short-circuit A1, A2, B1, B2, C1, C2. When the relay is working, all contacts are energized. After short-circuiting, only one circuit needs to be tested. Through series connection, as long as one circuit is blocked, the test circuit cannot be connected. When designing tooling, only one circuit needs to be tested, so a buzzer can be connected in series to judge the quality of the relay by the sound of the buzzer.

[0023] Third, process and manufacture according to the design drawings, and connect the wires according to the device principles.

[0024] Fourth, use relays to test and debug the fault location device and make adjustments to any inaccuracies.

[0025] Specifically, the utility model provides a relay rapid fault location device, which does not need to weld the corresponding wires to the relay pins (straight column type and welding hook type), because the welding requirements are very strict, and neutral flux should be used for welding to avoid contaminating the glass insulation paper and causing the insulation of the relay to decrease. At the same time, the welding time should not be too long, and the continuous time should not exceed 3 seconds. The welding temperature should not be too high. Excessive temperature can cause the glass insulator to crack and leak, reducing the sealing of the relay. It is generally recommended that the temperature should not exceed 260°C. The fault location device avoids secondary faults caused by welding and affects fault analysis.

[0026] The utility model provides a relay rapid fault location device, which has a short fault detection confirmation time and high efficiency. The base adopts a semi-open resiliently deformable socket structure design, which can effectively accommodate factors such as tin material and bending on the relay pins, making plugging and unplugging more convenient and with less force, which will not affect the physical properties of the relay pins. It is equipped with a battery module and no external 28V DC power supply is required. Figure 1 shown.

[0027] The utility model provides a relay rapid fault location device with strong scalability. According to statistics, there are 6 types of commonly used relays, such as Figure 2 As shown, 6 types of relay bases are designed, and some blank space is left on the right. When new relays are needed in the future, they can be added directly in the blank space. Wiring positions are left in the box to facilitate line connection. The device has strong scalability.

[0028] The utility model provides a relay rapid fault location device, which is simple to judge the fault mode, adds a buzzer in the circuit, designs the wiring according to the principle of each different type of relay, and judges the quality of the relay according to the sound of the buzzer, which makes fault location more convenient.

Claims

1. A rapid fault location device for a relay, characterized in that: The device comprises: a plurality of relay positioning bases arranged on the device panel for fixing different types of relays, and a 28V DC control power supply and a test element arranged inside the device; Two test terminals are arranged on the relay positioning base; the test element is connected to the two test terminals on the relay positioning base.

2. A rapid fault location device for a relay according to claim 1, characterized in that: Two control terminals are arranged on the relay positioning base, and the DC control power supply is connected to the two control terminals on the relay positioning base.

3. A rapid fault location device for a relay according to claim 1, characterized in that: The control end of the relay positioning base includes a power input end and a power ground end. The power input ends of multiple relays are connected in parallel, and the power ground ends are connected in parallel.

4. A rapid fault location device for a relay according to claim 1, characterized in that: The test end of the relay positioning base includes a test input end and a test output end. The test input ends of multiple relays are connected in parallel, and the test output ends are connected in parallel.

5. A rapid fault location device for a relay according to claim 1, characterized in that: The pins corresponding to each group of normally open contacts of the relay on the relay positioning base are connected in series, so that all the normally open contacts of the relay form a path.

6. A rapid fault location device for a relay according to claim 1, characterized in that: The relay positioning base adopts a semi-open resiliently deformable socket structure.

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