Special tool for testing fuel annunciator
By designing a special tooling for testing fuel signalers that simulates fuel tanks and related structures, the problem of testing fuel signalers in both upright and inverted configurations was solved, achieving efficient and accurate testing and repair results.
Patent Information
- Application Number
- CN202520142734.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Existing technology cannot test the starting fluid level signal of the fuel indicator under both upright and inverted installation conditions, thus failing to meet product testing requirements.
A special tooling for testing fuel signalers was designed, including a simulated fuel tank, a drain port, a product installation port, and a liquid level scale. The simulated fuel tank can be placed upright or upside down to provide a testing environment, and the starting liquid level can be accurately read through the drain port and the liquid level scale.
It enables both upright and inverted installation testing of fuel signalers, improving testing efficiency and repair quality, reducing the complexity of the installation process, and ensuring the accuracy and convenience of testing.
Smart Images
Figure CN223664083U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to fuel signal tester field, concretely relates to a fuel signal tester special frock. BACKGROUND
[0002] Fuel signal is installed on the airplane, is used for converting fuel oil level signal into corresponding full oil or oil once disposable instruction signal, and is transmitted to the on -board fuel oil - consumption automatic control system to judge full oil or oil signal, thereby judging whether the fuel tank is full or oil is not enough. The product is used for indicating oil signal, and the inverted installation is used for indicating full oil signal. A plurality of signal devices are installed in the fuel tank to indicate oil or full oil signal by normal installation or inverted installation.
[0003] In the repair of fuel signal, the product needs to be tested (including full oil starting liquid level, oil starting liquid level) The product needs to be measured twice by normal installation and inverted installation. At present, there is no special test frock, and other signal test equipment can only test the starting liquid level under normal installation, and cannot test the starting liquid level signal under inverted installation. It cannot meet the product test requirements.
[0004] Therefore, how to provide a fuel signal tester special frock which can be tested by normal installation and inverted installation is a problem to be solved by those skilled in the art. UTILITY MODEL CONTENTS
[0005] Therefore, the utility model provides a fuel signal tester special frock to meet the product test requirements.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a fuel signal tester special frock, comprising:
[0007] The top of the simulation oil tank is provided with a fuel inlet, and a fuel cover is detachably connected to the fuel inlet corresponding to the fuel inlet.
[0008] The first oil outlet is arranged on one side wall of the simulation oil tank, and the first oil outlet is connected with a first oil outlet switch.
[0009] The second oil outlet is arranged on the outer side wall of the simulation oil tank and located below the first oil outlet, and the second oil outlet is connected with a second oil outlet switch.
[0010] The product installation pipe is connected and communicated on the outer side wall of the simulation oil tank, and the product installation pipe is connected with the fuel signal to be tested.
[0011] A liquid level scale is arranged on the outer sidewall of the simulation oil tank, and the arrangement direction of the liquid level scale is parallel to the central axis of the fuel signal indicator.
[0012] The simulation oil tank provides a refueling environment and an installation base for the fuel signal indicator to be tested, the first and second oil discharge ports are used for controlling the liquid level in the simulation oil tank, the product mounting port can install the product to be tested on the simulation oil tank to establish a test environment, the liquid level scale is used to ensure that the starting liquid level is within the required range during product testing, and the simulation oil tank can be placed vertically or upside down, thereby meeting the full oil and empty oil testing requirements of the fuel signal indicator.
[0013] Preferably, the first and second oil discharge ports are arranged on the same sidewall of the simulation oil tank, the first oil discharge port is close to the top side of the simulation oil tank, and the second oil discharge port is close to the bottom side of the simulation oil tank.
[0014] The technical effects generated thereby are that the first and second oil discharge ports are located on the same side, which is convenient for operation, the second oil discharge port is a lower oil discharge port, the oil discharge switch at the lower oil discharge port is used to test the full oil starting liquid level signal of the fuel signal indicator when the fuel tank is filled with oil, and the oil is discharged when the fuel amount is excessive during slow oil filling; the first oil discharge port is an upper oil discharge port, and the oil discharge switch of the upper oil discharge port is used when the simulation oil tank is inverted, which is used to test the empty oil starting liquid level of the fuel signal indicator, and the oil is slowly discharged to accurately read the starting liquid level error value when the empty oil starting liquid level signal is emitted.
[0015] Preferably, the product mounting port is located in the middle of the outer sidewall of the simulation oil tank, a screw thread is arranged on the outer sidewall of the product mounting port, a product fixing nut is arranged on the product mounting port, and the plug of the fuel signal indicator to be tested is sealingly connected to the product mounting port.
[0016] The technical effects generated thereby are that the product mounting port provides a docking installation base for the fuel signal indicator to be tested, and the product fixing nut is used to fasten the installation position of the fuel signal indicator to be tested.
[0017] Preferably, an external thread is arranged on the plug of the fuel signal indicator, and the product fixing nut is connected to the external thread in a matched mode.
[0018] The technical effect is that the plug thread on the fuel signal indicator is used to connect the product nut on the product installation nozzle, which is convenient and reliable.
[0019] Preferably, the liquid level scale is located at the top area of the simulation oil tank, and the reference zero line of the liquid level scale is aligned with the center axis zero indication line of the fuel signal indicator to be tested.
[0020] The technical effect is that the liquid level scale is used to determine whether the starting liquid level is within the required range during product testing, and is aligned with the center axis "0-0" indication line of the product to ensure the accuracy of product determination and the reference accuracy of the starting liquid level test of the product to be tested.
[0021] Preferably, the range of the liquid level scale covers the starting liquid level variation range of the fuel signal indicator to be tested.
[0022] The technical effect is that the range of the liquid level scale covers the starting liquid level variation range of the fuel signal indicator to meet the determination requirements of the starting liquid level test range of the product. BRIEF DESCRIPTION OF DRAWINGS
[0023] Fig. 1 The structure diagram of the fuel signal indicator test special tool of the present application;
[0024] Fig. 2 The full oil starting liquid level test schematic diagram of the fuel signal indicator test special tool of the present application;
[0025] Fig. 3 The oil-out starting liquid level test schematic diagram of the fuel signal indicator test special tool of the present application.
[0026] 1 simulation oil tank, 2 oil cover, 3 first oil drain port, 4 first oil drain switch, 5 second oil drain port, 6 second oil drain switch, 7 product installation nozzle, 8 fuel signal indicator, 9 liquid level scale, 10 starting liquid level tester, 11 test cable. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0028] Referring to the drawings of the present application, Figs. 1 to 3 According to the fuel signal indicator test special tool of the present application, the fuel signal indicator test special tool comprises:
[0029] Simulated oil tank 1 has a square structure and a filler port on the top. A sealing cap 2 is detachably connected to the filler port of simulated oil tank 1. The sealing cap 2 can ensure that the simulated oil tank does not leak oil when it is inverted and that the liquid level is horizontal when it is inverted.
[0030] The first oil drain port 3 is located on one side wall of the simulated oil tank 1, and the first oil drain switch 4 is connected to the first oil drain port 3.
[0031] The second oil drain port 5 is located on the outer wall of the simulated oil tank 1 and below the first oil drain port 3. The second oil drain port 5 is connected to the second oil drain switch 6.
[0032] Product installation port 7 is connected to and connected to the outer wall of the simulated fuel tank 1. Product installation port 7 is connected to the fuel signal device 8 to be tested. During the test, the fuel signal device 8 is electrically connected to the external starting liquid level tester 10.
[0033] The liquid level scale line 9 is set on the outer wall of the simulated fuel tank 1, and the arrangement direction of the liquid level scale line 9 is parallel to the central axis of the fuel signal device 8.
[0034] In other embodiments, the first drain port 3 and the second drain port 5 are arranged on the same side wall of the simulated fuel tank 1. The first drain port 3 is close to the top side of the simulated fuel tank 1 and is the top drain port. The second drain port 5 is close to the bottom side of the simulated fuel tank 1 and is the bottom drain port.
[0035] Specifically, the product installation port 7 is located in the middle of the outer wall of the simulated fuel tank 1. The outer wall of the product installation port 7 is threaded, and the product installation port 7 is equipped with a product fixing nut. The plug of the fuel signal device to be tested is sealed and connected to the product installation port 7. It should be noted that the product nut is limited on the product installation port and will not come out. Specifically, a shoulder nut is used. The product installation port is equipped with necessary retaining rings to ensure the end limit position of the product nut.
[0036] More specifically, the plug of the fuel signaler 8 is provided with external threads, and the product fixing nut is adapted to connect with the external threads. When connecting, it is necessary to ensure the sealing of the connection between the fuel signaler and the product installation port.
[0037] In some other embodiments, the liquid level scale line 9 is located in the top area of the simulated fuel tank 1, and the reference zero degree line of the liquid level scale line 9 is aligned with the zero degree indicator line of the central axis of the fuel signal device under test, so as to ensure the accuracy of the product's starting liquid level reading.
[0038] In some other embodiments, the range of the liquid level scale line 9 covers the range of liquid level fluctuations during the start-up of the fuel signal under test, so as to ensure the interpretation results of the fuel signal under test.
[0039] Instructions for using the fuel signal indicator testing fixture:
[0040] Close the first drain valve 4 and the second drain valve 6, and place the simulated fuel tank 1 horizontally with the filler neck facing upwards (see attached diagram). Fig. 2 The fuel signal device 8 to be tested is installed upside down on the product mounting port 7, and the product fixing nut is tightened to the threaded connection of the fuel signal device plug housing to complete the relative fixation of the fuel signal device 8.
[0041] Connect the test cable 11 to the fuel signal plug pin and turn on the starter fluid level tester 10;
[0042] Use a suitable container to add oil through the filler neck. When the liquid level is close to the range where the fuel indicator is activated, add oil slowly. Stop adding oil when the 10 light on the start liquid level tester is on.
[0043] Read the liquid level scale at this time to determine whether the liquid level of the full oil start-up meets the technical requirements. After the full oil start-up liquid level test is completed, turn off the start-up liquid level tester 10.
[0044] Tighten the oil seal cap 2, and rotate the fixture for installing the product 180°. Fig. 3 As shown, turn on the first oil drain switch 4 to drain the oil. When the liquid level is close to the range where the signal is connected, slowly drain the oil. When the start liquid level tester 10 light is on, turn on the first oil drain switch 4 to stop draining the oil.
[0045] Read the liquid level scale at this point to determine if the starting liquid level meets the technical requirements. After the starting liquid level test is completed, turn off the starting liquid level tester, pour out the oil, and remove the product.
[0046] Using this fixture to test products not only satisfies the requirements for both upright and inverted performance testing, but also reduces the need for upright and inverted installation by reversing the fixture, making the testing process convenient and easy to operate, and improving work efficiency and product repair quality.
[0047] The apparatus and methods disclosed in the embodiments are described simply because they correspond to the methods disclosed in the embodiments. For relevant details, please refer to the method section.
[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily 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 is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A special tooling for testing fuel signalers, characterized in that, include: A simulated fuel tank (1) is provided with a filler port on the top of the simulated fuel tank (1), and a sealing cap (2) is detachably connected to the filler port of the simulated fuel tank (1); The first oil drain port (3) is located on one side wall of the simulated oil tank (1), and a first oil drain switch (4) is connected to the first oil drain port (3). The second oil drain port (5) is located on the outer side wall of the simulated oil tank (1) and below the first oil drain port (3). A second oil drain switch (6) is connected to the second oil drain port (5). Product installation port (7), the product installation port (7) is connected to and communicates with the outer wall of the simulated fuel tank (1), the product installation port (7) is connected to the fuel signal device (8) to be tested, and during the test, the fuel signal device (8) is electrically connected to the external starting liquid level tester (10). Liquid level scale line (9) is set on the outer wall of the simulated fuel tank (1), and the arrangement direction of the liquid level scale line (9) is parallel to the central axis of the fuel signal device (8).
2. The special tooling for testing a fuel signal device according to claim 1, characterized in that, The first oil drain port (3) and the second oil drain port (5) are arranged on the same side wall of the simulated oil tank (1). The first oil drain port (3) is close to the top side of the simulated oil tank (1), and the second oil drain port (5) is close to the bottom side of the simulated oil tank (1).
3. The special tooling for testing a fuel signal device according to claim 1, characterized in that, The product installation port (7) is located in the middle of the outer side wall of the simulated fuel tank (1). The outer side wall of the product installation port (7) is provided with threads. The product installation port (7) is provided with a product fixing nut. The plug of the fuel signal device to be tested is sealed and connected to the product installation port (7).
4. The special tooling for testing a fuel signal device according to claim 3, characterized in that, The fuel signal device (8) has an external thread on its plug, and the product fixing nut is adapted to the external thread for connection.
5. The special tooling for testing a fuel signal device according to claim 1, characterized in that, The liquid level scale line (9) is located in the top area of the simulated fuel tank (1), and the reference zero degree line of the liquid level scale line (9) is aligned with the zero degree indicator line of the center axis of the fuel signal device under test.
6. The special tooling for testing a fuel signal device according to claim 1, characterized in that, The range of the liquid level scale line (9) covers the starting liquid level variation range of the fuel signal device under test.