A device for detecting leakage of an aviation filter bypass valve

Abstract

The utility model relates to aviation filter bypass valve leakage amount detection technical field, especially aviation filter bypass valve leakage amount's detection device, including base, the base on setting recess, recess bottom sets up through -hole no. 1, light curtain type fiber optic sensor is installed in recess, the window of light curtain type fiber optic sensor and recess bottom's through -hole no. 1 position corresponds, light curtain type fiber optic sensor is set up upper cover, upper cover is set up through -hole no. 2, through -hole no. 2 and the window position of light curtain type fiber optic sensor correspond, the utility model discloses high detection efficiency, precision control is good, quality stable and reliable, operator takes use, and returns conveniently, can satisfy aviation filter bypass valve leakage amount different medium oil liquid's detection.

Description

Technical Field

[0001] This utility model patent relates to the field of aviation filter bypass valve leakage detection technology, and in particular to a device that has the function of detecting bypass valve leakage and collecting detection data. Background Technology

[0002] Most aviation filter products are equipped with bypass valves. When the filter becomes clogged and the pressure difference between the inlet and outlet exceeds a specified value, the bypass valve opens, allowing the medium to bypass the filter and enter the downstream of the system directly. This ensures system flow, prevents system interruption, and avoids damage to some hydraulic components. However, during the bypass valve sealing test, the operator applies 80% of the opening pressure to the product and maintains the pressure for a certain period. Throughout this process, the operator must visually observe the number of leaking oil droplets at the outlet pipe joint. After each product's test, the number of leaking oil droplets is manually recorded in a form, resulting in low work efficiency.

[0003] The traditional detection method described above requires operators to visually observe and count the number of leaked oil droplets for extended periods, which is not only inefficient but also causes eye fatigue and inaccurate counting results, potentially affecting the test outcome. Summary of the Invention

[0004] The purpose of this invention is to provide a detection device with high detection efficiency, good accuracy control, stable and reliable quality, which can meet the detection requirements of different media oils for leakage in aviation filter bypass valves.

[0005] Technical solution: A device for detecting leakage of an aviation filter bypass valve includes a base with a groove on the base and a through hole at the bottom of the groove. A light curtain fiber optic sensor is installed in the groove, with the window of the light curtain fiber optic sensor corresponding to the position of the through hole at the bottom of the groove. A top cover is provided on the light curtain fiber optic sensor, with a second through hole on the top cover, which corresponds to the position of the window of the light curtain fiber optic sensor.

[0006] Furthermore, an annular sealing gasket is provided between the top cover and the light curtain fiber optic sensor, and the sealing gasket is located at the edge of the light curtain fiber optic sensor window.

[0007] Furthermore, a wire clamp is installed on the base, and the wire clamp is connected to the light curtain fiber optic sensor via a wire.

[0008] Furthermore, there is a small angle between the top cover and the horizontal plane.

[0009] Furthermore, both the top cover and the base are made of transparent acrylic material.

[0010] Furthermore, the base, sealing gasket, and top cover are secured with countersunk screws, washers, and nuts.

[0011] Technical effects of this utility model: This invention features high testing efficiency, excellent precision control, and stable and reliable quality. It is convenient for operators to use and return, and can meet the testing requirements for different media oils causing leakage in aviation filter bypass valves. Currently, this testing device has been installed in multiple testing facilities and has been well-received by testing operators. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figures 1(a), 1(b), and 1(c) are schematic diagrams of the leakage detection device. In the figures: 1-base of the protective device, 2-top cover of the protective device, 3-sealing gasket, 4-countersunk screw, 5-washer, 6-nut, 7-light curtain fiber optic sensor, 8-line clamp. Figure 2 This is a schematic diagram of the upper cover structure of the protective device; Figure 3 This is a schematic diagram of the protective device base structure; Figure 4 This is a schematic diagram of the sealing gasket structure; Figure 5 This is a schematic diagram of the use of a leakage detection device. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and apparatus without departing from the spirit of this utility model. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring this utility model.

[0016] It should be noted that, where there is no conflict, the embodiments of this utility model and the features therein can be combined with each other, and the various embodiments can be referenced and cited in turn. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] The present invention will be further described in detail below. Figure 1 is a schematic diagram of the leakage detection device. Component 1 is the base of the protective device, component 2 is the top cover of the protective device, component 3 is the sealing gasket, component 4 is the countersunk screw, component 5 is the washer, component 6 is the nut, component 7 is the light curtain fiber optic sensor, and component 8 is the wire clamp.

[0018] The protective device base of component 1 is made of 5 pieces of transparent acrylic material bonded together. The upper part forms a mounting groove that is slightly larger than the shape of the light curtain fiber optic sensor. The square holes and screw holes on the bottom of the mounting groove are consistent with the position of the sensor. The lower part forms an open structure bracket, which can meet the height requirements and suspend the detection device in a fixed position on the test bench when not in use, ensuring convenient operation, retrieval and return.

[0019] The protective cover of component 2 is made of 5 pieces of transparent acrylic material bonded together. The size of the cavity formed matches the outer size of the base of the protective device of component 1. The square holes and screw holes on the surface of the cover are consistent with the position of the sensor to ensure smooth assembly and testing in the future.

[0020] When assembling the leakage detection device of this utility model, first, the light curtain fiber optic sensor 7 is installed into the mounting groove in the protective device base 1. Then, the sealing gasket 3 is placed at the window position of the light curtain fiber optic sensor 7. Next, the protective device cover 2 is assembled with the protective device base 1. Then, the protective device base 1, the protective device cover 2, and the sealing gasket 3 are connected and tightened with countersunk screws 4, washers 5, and nuts 6. Finally, the wire in the light curtain fiber optic sensor 7 is connected to the wire clamp 8 along the internal space of the protective device base 1.

[0021] A schematic diagram of the leakage detection device of this utility model is shown below. Figure 5 As shown, before use, set the appropriate operating parameters for the light curtain fiber optic sensor 7 and configure the program in the test equipment to ensure that the detection data of the light curtain fiber optic sensor 7 is transmitted to the equipment. During use, first assemble the filter product on the test bench, connect the clamp 8 to the test bench, power the light curtain fiber optic sensor 7, and transmit the signal from the light curtain fiber optic sensor 7 to the test bench. Then, place the window of the leakage detection device below the outlet pipe joint of the filter bypass valve. The operator then conducts the test according to the process document requirements. Whenever a drop of oil passes through the window of the light curtain fiber optic sensor 7, the light transmission of the light curtain fiber optic sensor 7 changes, and an electrical signal is sent to the test bench. The test bench obtains the number of oil droplets that passed through based on the electrical signal, which is the leakage amount of the filter bypass valve.

[0022] The above embodiments are only used to illustrate the technical solution of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should be covered within the protection scope of this utility model.

Claims

1. A device for detecting leakage of an aviation filter bypass valve, characterized in that, The device includes a base with a groove and a through hole at the bottom. A light curtain fiber optic sensor is installed in the groove, with the window of the light curtain fiber optic sensor corresponding to the position of the through hole at the bottom of the groove. A top cover is provided on the light curtain fiber optic sensor, with a through hole on the top cover corresponding to the position of the window of the light curtain fiber optic sensor.

2. The device for detecting leakage of an aviation filter bypass valve according to claim 1, characterized in that, An annular sealing gasket is placed between the top cover and the light curtain fiber optic sensor, and the sealing gasket is located at the edge of the light curtain fiber optic sensor window.

3. The device for detecting leakage of an aviation filter bypass valve according to claim 1, characterized in that, A wire clamp is installed on the base, and the wire clamp is connected to the light curtain fiber optic sensor through a wire.

4. The device for detecting leakage of an aviation filter bypass valve according to claim 1, characterized in that, There is a small angle between the top cover and the horizontal plane.

5. The device for detecting leakage of an aviation filter bypass valve according to claim 1, characterized in that, Both the top cover and the base are made of transparent acrylic material.

6. The device for detecting leakage of an aviation filter bypass valve according to claim 2, characterized in that, The base, sealing gasket, and top cover are secured with countersunk screws, washers, and nuts.

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