CN211928042U - Metal filing foam sensor check out test set - Google Patents

Abstract

The utility model relates to a metal fillings foam sensor check out test set, its characterized in that: including equipment principal (1), adapter cable (2) and short circuit piece (3), in equipment principal (1), the component part includes function option switch (4), battery (5), pilot lamp (6), special socket (7), wherein function option switch (4) are single-pole double-throw switch, stitch 1 of special socket (7) is established ties with function option switch (4) in proper order, battery (5), pilot lamp (6), and stitch 2 of special socket (7), special socket (7) are through butt joint plug connection with adapter cable (2), realize being connected of metal bits foam sensor check out test set and sensor.

Description

Metal filing foam sensor check out test set

The technical field is as follows:

the utility model discloses a metal fillings foam sensor check out test set is a new utility model's professional equipment that is used for certain type metal fillings foam sensor to decide periodic inspection. It is characterized in that a special interface is designed; the function switch is designed, and the functions of the equipment can be switched according to the detection requirement; the indicator light is designed and used for indicating the working state of the sensor; and the short-circuit piece is designed and is physically connected with the sensor to simulate a metal scrap short-circuit signal.

Background art:

the metal scrap foam sensor is matched equipment of an aircraft engine lubricating oil tank, special tool equipment is lacked when special inspection is carried out on the metal scrap foam sensor in the past, and a crew member often uses a fuse and a three-purpose meter to carry out function inspection on the sensor and an aircraft circuit according to experience. In the long-term inspection process, the simple and crude measurement means has multiple potential safety hazards, the measurement mode is difficult, the display result is not visual, and the working quality and the working efficiency are influenced.

The following problems exist when measuring the sensor part:

1) the conventional approach uses a phi 0.8mm iron fuse to short the sense element as shown in fig. 2. However, the gap between the metal sheets of the assembly is only about 0.6mm, so the two ends of the flat fuse need to be manually hammered in the first measurement step until the fuse can be hammered into the gap between the metal sheets. The processing process is time-consuming and labor-consuming, and the skilled worker also needs 5 minutes and 2 and 3 comparisons to complete the processing of the fuse.

2) Because the mode of manual processing is rougher, can pound out the burr with fuse both ends surface, such fuse has the possibility to fall into the metal fillings when inserting the sheetmetal clearance firmly and in the sensor, causes secondary pollution to the sensor.

3) After the fuse is successfully short-circuited, a three-purpose meter is still needed to measure the pin resistance of the sensor to judge the result, the inspection result is not visual, and 2 persons are usually needed for matching.

The following problems exist when measuring aircraft line sections:

1) an unreliable inspection method exists, namely, an airplane cable is connected to a short-circuited sensor, so that a fuse is replaced to send a short-circuit signal to an electromechanical system of the airplane. The method ignores the condition of short-circuit virtual connection of the sensor, and can influence the error judgment of the on-machine line or the on-machine equipment fault by the crew if the sensor is not short-circuited actually.

2) The fuse short-circuit plug has potential safety hazards of grounding, and when the airplane is electrified, if the fuse touches the shell, the airplane circuit breaker can be tripped, and equipment can be damaged in serious conditions.

All kinds of quality and potential safety hazards listed above impel us to carry out analysis reform to current inspection mode, require the design utility model special inspection equipment to certain type metal bits end sensor inspection.

The utility model has the following contents:

the utility model aims at: a special inspection device for the periodic inspection of a certain type of metal chip sensor is developed. The equipment comprises an equipment body 1, a transfer cable 2 and a short-circuit piece 3, which are shown in figure 1

The technical proposal of the utility model is that

The utility model provides a metal bits foam sensor check out test set (fig. 1), including equipment principal 1, adapter cable 2 and short circuit piece 3, in equipment principal 1, the component part includes function selector switch 4, the battery 5, pilot lamp 6, special socket 7, wherein function selector switch 4 is single-pole double-throw switch, special socket 7's stitch 1 in proper order with function selector switch 4, the battery 5, pilot lamp 6, and special socket 7's stitch 2 is established ties, special socket 7 passes through butt joint plug with adapter cable 2 and is connected, realize being connected of metal bits foam sensor check out test set and sensor.

When the airplane circuit is detected, the contact a of the function selection switch 4 is connected, the pin 1 and the pin 2 of the special socket 7 are in short circuit, and the adapter cable 2 is connected with the plug on the airplane through the butt plug, so that the sensor short circuit signal is sent to airplane equipment.

When the metal dust sensor is detected and the b contact of the function selection switch 4 is connected, the short contact piece 3 is inserted into the measuring position of the sensor, the sensor plug is connected with the special socket 7 by using the adapter cable 2, and the output voltage of the storage battery is 3V. After the patch cable 2 connects the sensor plug with the special socket 7, if the indicator light 6 is lighted, it indicates that the sensor is short-circuited. After the patch cable 2 connects the sensor plug with the special socket 7, if the indicator lamp 6 is not lighted, the sensor is indicated to be in fault.

The short tab 3 has an overall thickness of 0.6 mm. The front end part of the short connecting piece 3 is a U-shaped piece. After the short connecting piece 3 is inserted, the gap between the short connecting piece 3 and the sensor is 0.6 +/-0.1 mm.

The utility model discloses an advantage and benefit:

1) the short-contact piece design can reliably prevent damage to the sensor, and the operation is simple and the effect is excellent.

2) The design and operation of the indicator light are simple, the result display is clear, and the operation can be completed by only one person.

3) The airplane line short circuit function can avoid the safety risk and the hidden quality trouble existing in the conventional airplane line inspection process.

The benefits are as follows:

1) the device has small volume, light weight and convenient carrying, can be suitable for any working environment, and improves the efficiency of maintenance work;

2) the device can be popularized and applied to various engines using the metal chip sensor of the model.

Drawings

FIG. 1 is a schematic view of an inspection apparatus

FIG. 2 is a schematic view of an inspection sensor;

FIG. 3 is a schematic illustration of a circuit for inspecting an aircraft.

Detailed Description

The utility model discloses check out test set is according to metal fillings foam sensor fixed cycle inspection requirement and inspection logic design, can be accurate short-term test metal fillings end sensor performance whether good and the aircraft circuit whether good.

The metal filing foam sensor is functionally detected by using the detection equipment:

taking fig. 2 as an example, the tab 3 is inserted into the sensor measurement site. The sensor plug is connected to the inspection scope socket 7 using a patch cable 2. After connection, the switch 4 is pulled to the contact b to be connected, and if the indicator light 6 is lighted, the sensor is short-circuited, so that the sensor functions normally. The operation is simple, the result display is clear, and the operation can be finished by only one person.

The whole thickness of the short-circuit piece is 0.6mm, and the front end part of the short-circuit piece is processed in a concave-convex mode with the height of 0.05-0.1mm, so that the short-circuit piece can perfectly fit with a gap of 0.6 +/-0.1 mm of the sensor. Meanwhile, the potential safety hazard of metal scraps falling into the sensor is avoided.

The function of the airplane line is detected by using the detection equipment:

using the example shown in fig. 3, a patch cable 2 is used to connect the aircraft lines to the inspection scope socket 7. After connection, the switch 4 is pulled to the short-circuit position a, and a sensor short-circuit signal can be sent to the airplane equipment. Thereby completing the short circuit function verification in the aircraft line inspection project.

Claims (8)

1. A metal fillings foam sensor check out test set which characterized in that: the multifunctional power supply comprises an equipment main body (1), a transfer cable (2) and a short-circuit piece (3), wherein in the equipment main body (1), the components comprise a function selection switch (4), a storage battery (5), an indicator light (6) and a special socket (7); wherein function select switch (4) are single-pole double-throw switch, and stitch 1 of special socket (7) is established ties with function select switch (4), battery (5), pilot lamp (6) and stitch 2 of special socket (7) in proper order, and special socket (7) are connected through butt joint plug with adapter cable (2) to realize being connected of metal bits foam sensor check out test set and metal bits foam sensor.

2. The metal debris sensor detecting apparatus according to claim 1, wherein: when the airplane circuit is detected, the contact a of the function selection switch (4) is connected, the pin 1 and the pin 2 of the special socket (7) are in short circuit, and the adapter cable (2) is connected with the plug on the airplane through the butt plug, so that a metal scrap foam sensor short circuit signal is sent to airplane equipment.

3. The metal debris sensor detecting apparatus according to claim 1, wherein: when the metal dust sensor is detected, the b contact of the function selection switch (4) is switched on, the short contact piece (3) is inserted into the measuring position of the metal dust sensor, the plug of the metal dust sensor is connected with the special socket (7) by using the adapter cable (2), and the output voltage of the storage battery is 3V.

4. The metal debris sensor detecting apparatus according to claim 3, wherein: after the adapter cable (2) connects the plug of the metal scrap foam sensor with the special socket (7), if the indicator lamp (6) is lightened, the metal scrap foam sensor is indicated to be short-circuited.

5. The metal debris sensor detecting apparatus according to claim 3, wherein: after the adapter cable (2) connects the plug of the metal scrap foam sensor with the special socket (7), if the indicator lamp (6) is not lightened, the metal scrap foam sensor is indicated to have a fault.

6. The metal debris sensor detecting apparatus according to claim 3, wherein: the short connecting piece (3) has the whole thickness of 0.6 mm.

7. The metal debris sensor detecting apparatus according to claim 3, wherein: the front end part of the short connecting piece (3) is a U-shaped piece.

8. The metal debris sensor detecting apparatus according to claim 7, wherein: after the short connecting piece (3) is inserted, the clearance between the short connecting piece (3) and the metal scrap foam sensor is 0.6 +/-0.1 mm.

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