Test paper adhesive tape for leakage detection of conduit joint of aviation hydraulic system

Abstract

The utility model discloses an aviation hydraulic system conduit joint leakage detection test paper adhesive tape, which comprises a PET (polyethylene terephthalate) base material adhesive tape, the PET base material adhesive tape forms single sticking adhesive tapes with the same size through a quick-tearing parting line, and each single sticking adhesive tape is provided with oil detection test paper. According to the utility model, the single-time sticking adhesive tape, the oil liquid detection test paper and the oil absorption non-woven fabric are arranged, so that the color of the oil liquid can be changed after the oil liquid is in contact with the adhesive tape of the detection test paper, and the tiny leakage of the guide pipe joint of the aviation hydraulic system can be quickly judged; therefore, the problems that a touch detection method cannot reach a part and a dye flaw detection method is not suitable for high-frequency normal use are solved, the working efficiency and the defect detection rate are greatly improved, the accuracy and the convenience of leakage detection of the aviation hydraulic system conduit joint are improved, and comprehensiveness is realized at the same time.

Description

Technical Field

[0001] This utility model belongs to the field of aviation hydraulic system leakage detection technology, specifically relating to a test paper tape for detecting leakage of aviation hydraulic system conduit joints. Background Technology

[0002] In the routine maintenance of military aircraft, the sealing inspection of aviation hydraulic systems, especially the sealing inspection of conduit joints, is a routine maintenance task involving many parts and performed frequently. It is an important means to promptly and effectively detect potential faults and prevent unsafe incidents in the aircraft's hydraulic system.

[0003] Current inspection methods typically include: first, visual inspection, which involves visually inspecting the conduit connector for looseness, leakage, or damage; second, tactile testing, which involves touching the conduit connector to check for abnormal temperature, vibration, or other issues to determine if the connector is normal or if foreign objects are attached; and third, dye penetrant testing, which involves applying a chemical penetrant to the conduit connector, allowing it to stand for a period of time, and then spraying a developer to visually inspect for defects.

[0004] Of the three methods mentioned above, visual inspection and tactile inspection are simple, convenient and commonly used. They can be performed by maintenance personnel with basic maintenance skills. However, they are difficult to detect minute leaks and cannot be judged by touch for parts that cannot be touched. Dyeing flaw detection can detect minute defects, but it requires specialized professionals to complete and the joints need to be disassembled, which takes a long time and is relatively inefficient, making it unsuitable for routine implementation.

[0005] Therefore, we propose a test paper tape for detecting leakage in aviation hydraulic system conduit joints. Utility Model Content

[0006] The purpose of this invention is to provide a test paper tape for detecting leakage in the conduit joints of aviation hydraulic systems, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a test paper tape for detecting leakage in aviation hydraulic system conduit joints, comprising,

[0008] PET substrate tape, wherein the PET substrate tape is formed into single-use tapes of equal size by quick-tear dividing lines;

[0009] Oil test strips are provided on each of the single-use adhesive tapes;

[0010] Oil-absorbing nonwoven fabric, which is placed on the oil test paper.

[0011] Preferably, the length of the single-use adhesive tape is L, and the length of the single-use adhesive tape is 5-10 mm longer than the outer diameter circumference of the aviation hydraulic system conduit connector.

[0012] Preferably, the oil test strip is a pH test strip.

[0013] Preferably, the oil test paper and the oil-absorbing nonwoven fabric are formed into an integral structure by pressing.

[0014] Preferably, the oil test paper is placed on the adhesive surface of the single-use adhesive tape.

[0015] Preferably, both the oil test paper and the oil-absorbing nonwoven fabric have a serrated structure on one side.

[0016] Preferably, the oil test paper and the oil-absorbing nonwoven fabric are of equal length, and the lengths of both the oil test paper and the oil-absorbing nonwoven fabric are equal to the outer diameter circumference of the aviation hydraulic system conduit connector.

[0017] Preferably, the lengths of the oil test paper and the oil-absorbing nonwoven fabric are 5-10 mm shorter than the length of the single-use adhesive tape.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model includes a single-use adhesive tape, an oil test strip, and an oil-absorbing non-woven fabric. In use, the single-use adhesive tape is torn off through the quick-tear dividing line. Then, the side with the oil test strip and oil-absorbing non-woven fabric is pasted onto the outer diameter of the aviation hydraulic system conduit joint. After a period of time, the test strip is observed through the observation window with the aid of light to see if it changes color. This allows for a quick determination of whether there is a micro-leakage in the hydraulic joint, improving the accuracy and convenience of leakage detection in aviation hydraulic system conduit joints, while also achieving comprehensiveness.

[0020] 2. When replacing the test strip tape with a new one, this utility model only requires removing the contaminated test strip tape from the aviation hydraulic system conduit joint, cleaning and drying the aviation hydraulic system conduit joint, and then re-pasting the new test strip tape to achieve quick replacement.

[0021] 3. In this utility model, PET substrate tape is divided into single-use adhesive tapes of equal size by quick-tear dividing lines. The length of the single-use adhesive tape is adapted to the outer diameter circumference of the aviation hydraulic system conduit joint. On the one hand, the quick-tear dividing lines allow for quick tearing of the single-use adhesive tape, facilitating operation and improving testing efficiency. On the other hand, the length of the single-use adhesive tape can be varied in production and processing to meet the leakage detection needs of aviation hydraulic system conduit joints of different sizes and specifications, thereby expanding the applicability of leakage detection for aviation hydraulic system conduit joints and achieving convenient use. Only the conduit diameter needs to be determined to select the appropriate testing tape, enabling quick replacement.

[0022] 4. In this utility model, both the oil test paper and the oil-absorbing non-woven fabric have a serrated structure on one side. The serrated structure is required to be closely attached to the gap of the conduit joint of the aviation hydraulic system. As long as there is a small amount of oil seeping out of the gap, the serrated structure can absorb it, causing the test paper tape to change color, quickly and accurately detecting minute leaks and improving the sensitivity of oil absorption detection. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 3 This is a schematic diagram of the main structure of this utility model;

[0026] Figure 4 This is a side view of the structure of this utility model.

[0027] In the image: 1. PET substrate tape; 101. Single-use adhesive tape; 2. Quick-tear dividing line; 3. Oil test paper; 4. Oil-absorbing non-woven fabric; 5. Serrated structure. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-4 The present invention provides a test paper tape for detecting leakage in aviation hydraulic system conduit joints, comprising:

[0030] PET substrate tape 1 has an operating temperature range of -60℃ to 100℃, which can meet the operating conditions of aviation hydraulic system conduit joints in different parts of the aircraft. PET substrate tape 1 is divided into single-use adhesive tape 101 of equal size by quick-tear dividing line 2. The length of single-use adhesive tape 101 is L, and the length of single-use adhesive tape 101 is 5-10mm longer than the outer diameter circumference of aviation hydraulic system conduit joint.

[0031] In this invention, PET substrate tape 1 is formed into single-use adhesive tape 101 of equal size through quick-tear dividing lines 2. The length of the single-use adhesive tape 101 is adapted to the outer diameter circumference of the aviation hydraulic system conduit joint. On the one hand, the quick-tear dividing lines 2 allow for quick tearing of the single-use adhesive tape 101, facilitating operation and improving testing efficiency. On the other hand, the length of the single-use adhesive tape 101 can be varied in production and processing to meet the leakage detection requirements of aviation hydraulic system conduit joints of different sizes and specifications, thereby expanding the applicability of leakage detection for aviation hydraulic system conduit joints and achieving convenient use. Only the conduit diameter needs to be determined to select the appropriate testing tape, enabling quick replacement.

[0032] Oil test paper 3, each single-use adhesive tape 101 is provided with oil test paper 3, the oil test paper 3 is set on the adhesive surface of the single-use adhesive tape 101, and the oil test paper 3 is pH test paper;

[0033] Oil-absorbing nonwoven fabric 4 is placed on oil test paper 3. Oil test paper 3 and oil-absorbing nonwoven fabric 4 are formed into an integral structure by pressing. The lengths of oil test paper 3 and oil-absorbing nonwoven fabric 4 are equal, and the lengths of oil test paper 3 and oil-absorbing nonwoven fabric 4 are equal to the outer diameter circumference of aviation hydraulic system conduit joint. The lengths of oil test paper 3 and oil-absorbing nonwoven fabric 4 are 5-10mm shorter than the length of single-use adhesive tape 101, so as to achieve effective sealing of aviation hydraulic system conduit joint and avoid contamination of the joint surface by external oil, water and other substances.

[0034] This utility model includes a single-use adhesive tape 101, an oil test paper 3, and an oil-absorbing non-woven fabric 4. In use, the single-use adhesive tape 101 is torn off through the quick-tear dividing line 2. Then, the side with the oil test paper 3 and the oil-absorbing non-woven fabric 4 is pasted onto the outer diameter of the aviation hydraulic system conduit joint. After a period of time, the test paper tape is observed through the observation window with the aid of light to see if it changes color. This allows for a quick determination of whether there is a micro-leakage in the hydraulic joint, improving the accuracy and convenience of leakage detection in aviation hydraulic system conduit joints, while also achieving comprehensiveness.

[0035] When replacing the test strip tape, simply remove the contaminated test strip tape from the aviation hydraulic system conduit connector, clean and dry the aviation hydraulic system conduit connector, and then re-attach the new test strip tape for quick replacement.

[0036] In this embodiment, as Figures 1-3 As shown, both the oil test paper 3 and the oil-absorbing non-woven fabric 4 have a serrated structure 5 on one side. The serrated structure 5 is required to be in close contact with the gap of the conduit joint of the aviation hydraulic system. As long as there is a small amount of oil seeping out of the gap, the serrated structure 5 can absorb it, causing the test paper tape to change color, quickly and accurately detecting minute leaks and improving the sensitivity of oil absorption detection.

[0037] In summary, the method of using the aviation hydraulic system conduit joint leakage detection test paper tape provided in this embodiment is as follows: When using, tear the single-use adhesive tape 101 through the quick-tear dividing line 2, and then stick the side with the oil test paper 3 and oil-absorbing non-woven fabric 4 to the outer diameter of the aviation hydraulic system conduit joint. After waiting for a period of time, observe whether the test paper tape changes color through the observation window with the help of light. This allows for a quick determination of whether there is a micro-leakage in the hydraulic joint, improving the accuracy and convenience of leakage detection of aviation hydraulic system conduit joints, while achieving comprehensiveness.

[0038] When replacing the test strip tape, simply remove the contaminated test strip tape from the aviation hydraulic system conduit connector, clean and dry the aviation hydraulic system conduit connector, and then re-attach the new test strip tape for quick replacement.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aviation hydraulic system conduit joint leak detection test paper tape, characterized by, Comprising, a PET base tape (1) is divided into single-use tapes (101) of equal size by a quick tearing line (2); an oil detection test paper (3) is arranged on each single-use tape (101); an oil absorption non-woven fabric (4) is arranged on the oil detection test paper (3).

2. An aircraft hydraulic system conduit joint leak detection test paper tape according to claim 1, wherein: The length of the single-use tape (101) is L, and the length of the single-use tape (101) is 5-10 mm longer than the outer diameter of the aviation hydraulic system conduit joint.

3. An aircraft hydraulic system conduit joint leak detection test paper tape according to claim 1, wherein: The oil detection test paper (3) is a PH detection test paper.

4. An aircraft hydraulic system conduit joint leak detection test paper tape according to claim 1, wherein: The oil detection test paper (3) and the oil absorption non-woven fabric (4) are formed into an integrated structure by pressure bonding.

5. An aircraft hydraulic system conduit joint leak detection test paper tape according to claim 1, wherein: The oil detection test paper (3) is arranged on the adhesive surface of the single-use tape (101).

6. An aircraft hydraulic system conduit joint leak detection test paper tape according to claim 1, wherein: The oil detection test paper (3) and the oil absorption non-woven fabric (4) are provided with a sawtooth structure (5) on one side.

7. An aircraft hydraulic system conduit joint leak detection test paper tape according to claim 1, wherein: The length of the oil detection test paper (3) and the oil absorption non-woven fabric (4) is equal, and the length of the oil detection test paper (3) and the oil absorption non-woven fabric (4) is equal to the outer diameter of the aviation hydraulic system conduit joint.

8. An aircraft hydraulic system conduit joint leak detection test paper tape according to claim 7, wherein: The length of the oil detection test paper (3) and the oil absorption non-woven fabric (4) is 5-10 mm shorter than the length of the single-use tape (101).

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