Local leakage amount measuring device used in aircraft airtight experiment
By designing a measuring device including a shell, a battery, a switch, a flowmeter, a display screen and a self-adhesive film, the problem of lack of effective devices for measuring the local airtight leakage of the aircraft in aviation equipment manufacturing is solved, and rapid and accurate leakage measurement is achieved, which is suitable for aircraft and other aviation equipment manufacturing fields.
Patent Information
- Application Number
- CN202421091162.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-17
AI Technical Summary
In the manufacturing process of aviation equipment, there is a lack of effective devices for measuring local leakage in aircraft airtight experiments, which makes it impossible to accurately judge the leakage amount.
A measurement device including a housing, a battery, a switch, a flowmeter, a display screen and a self-adhesive film are designed. By pressing the head of the self-adhesive film to the air leakage part and pressing the switch, the flowmeter is used to measure the gas leakage amount in real time and display it on the display screen.
The device can quickly and accurately measure the local airtight leakage of the aircraft, fill the gap in the existing technology that lacks leakage measurement devices, and is suitable for the field of aviation equipment manufacturing such as aircraft.
Smart Images
Figure CN222599080U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of aviation manufacturing and relates to a local leakage measurement device used in an aircraft airtightness test. Background Art
[0002] In the process of aviation equipment manufacturing, after the installation of a single aircraft system and the final assembly of the entire aircraft, the system pipeline air tightness test and the whole aircraft air tightness test are respectively carried out. However, when conducting these air tightness tests, the design documents only give the aircraft leakage index, and do not provide a leakage measurement device. Therefore, it is very necessary to design a device for measuring local leakage during aircraft air tightness tests. Utility Model Content
[0003] The technical problem solved by the utility model is as follows: The utility model provides a device for measuring local leakage during airtightness test in the aircraft manufacturing process. The device can quickly and accurately measure the local airtightness leakage data, effectively filling the gap of the lack of leakage measurement device during airtightness test in the current aviation equipment manufacturing process.
[0004] Technical Solution
[0005] A device for measuring local leakage during an aircraft airtightness test comprises a housing 1, a battery 2, a switch 3, a flow meter 4, a display screen 5, and a self-adhesive film 8. The battery 1 is arranged inside the housing 1, the positive electrode of the battery 2 is connected to the positive electrode of the flow meter through the switch 3, the negative electrode of the battery 2 is connected to the negative electrode of the flow meter 4, the display screen 5 is connected to the flow meter 4, and the measuring end of the flow meter 4 extends out of the housing 1 and is connected to the self-adhesive film 8.
[0006] Furthermore, it also includes a fastening sleeve 7, which is arranged on the measuring end of the flow meter 4 and is used to press the self-adhesive film 8 onto the measuring end of the flow meter 4.
[0007] Furthermore, the positive electrode of the battery 2 is connected to the positive electrode of the flow meter 4 through the switch 3 and the wire 6 , and the negative electrode of the battery 2 is connected to the negative electrode of the flow meter 4 through the wire 6 .
[0008] Furthermore, the display screen 5 is embedded on the surface of the housing 1 .
[0009] Furthermore, the self-adhesive film 8 is in a trumpet shape, and a circle of adhesive tape 8-1 is formed on the inner surface of the head.
[0010] Furthermore, one end of the shell 1 is a handle end, and the handle end is wrapped with soft rubber.
[0011] Beneficial Effects
[0012] The utility model provides a device for measuring the local leakage during the airtightness test in the aircraft manufacturing process. Due to the adoption of the above technical solution, when performing the system pipeline airtightness test and the whole aircraft airtightness test, if a certain part of the aircraft feels leaking, but the leakage amount cannot be accurately determined, the device can be used to press the head of the self-adhesive film 8 to the surface of the leaking object, press the switch 3, and measure the local real-time gas leakage. The device is simple to operate and has accurate measurement data, and can be applied to the field of aircraft and other aviation equipment manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of a local leakage measurement device;
[0014] Figure 2 It is a schematic diagram of a self-adhesive film;
[0015] Among them: 1. housing, 2. battery, 3. switch, 4. flow meter, 5. display screen, 6. wire, 7. fastening device, 8. self-adhesive film, 8-1 tape. DETAILED DESCRIPTION
[0016] The utility model is further introduced below in conjunction with the accompanying drawings:
[0017] like Figure 1 As shown, a device for measuring the local leakage during the airtightness test in the aircraft manufacturing process is provided, including a shell 1, a battery 2, a switch 3, a flowmeter 4, a display screen 5, a wire 6, a fastening device 7, and a self-adhesive film 8. Among them, the shell 1 adopts a plastic shell, and the hand-held part adopts a soft rubber handle; the battery 2 adopts a cyclic rechargeable 12V lithium battery; the switch 3 adopts a push-type switch, and the power is turned on by pressing the switch with a finger, and the power is turned off when the finger is released; the flowmeter 4 adopts a high-precision gas flowmeter with a maximum working pressure of 0.8Mpa, a measuring range of 0-2.0L / s, and an accuracy of 0.1; the display screen 5 adopts an LCD liquid crystal display screen, which displays the instantaneous flow rate and has a unit conversion button that can be converted between L / s and L / mim; the wire 6 adopts a multi-strand copper wire polyvinyl chloride insulated wire with an outer diameter of 1.0mm; the fastening sleeve 7 is made of the same material as the shell 1, and is installed by matching the external thread on the flowmeter 4 with the internal thread; the self-adhesive film 8 is as shown in FIG. Figure 1 , 2 As shown, it is in a trumpet shape, with a circle of tape on the inner surface of the head, which has good adhesion to the surface of the metal material without leaving any residual glue, and the tail is similar to the mouth of a balloon, which can be inserted into the end of the flow meter 4 and fastened with a fastening sleeve 7.
[0018] When using, check that the device battery is sufficient and the display shows no problem, then follow Figure 1Insert the tail of the self-adhesive film 8 onto the end of the shell 1 and fix it with the fastening sleeve 7. Then press the head 8-1 of the self-adhesive film 8 onto the surface of the object where there is a leak. Press the switch 3, and the display screen 5 will display the gas leakage value of the part at this time. The self-adhesive film 8 can be prepared in multiple specifications and quantities, and different sizes of films can be used for different parts.
Claims
1. A device for measuring local leakage during an aircraft airtightness test, characterized in that: It includes a shell, a battery, a switch, a flow meter, a display screen, and a self-adhesive film. The battery is arranged inside the shell, the positive electrode of the battery is connected to the positive electrode of the flow meter through the switch, the negative electrode of the battery is connected to the negative electrode of the flow meter, the display screen is connected to the flow meter, and the measuring end of the flow meter extends out of the shell and is connected to the self-adhesive film.
2. A local leakage measurement device for aircraft airtightness test according to claim 1, characterized in that: It also comprises a fastening sleeve, which is arranged on the measuring end of the flow meter and is used for pressing the self-adhesive film onto the measuring end of the flow meter.
3. The local leakage measurement device for aircraft airtightness test according to claim 1, characterized in that: The positive electrode of the battery is connected to the positive electrode of the flow meter through a switch and a wire, and the negative electrode of the battery is connected to the negative electrode of the flow meter through a wire.
4. A local leakage measurement device for aircraft airtightness test according to claim 1, characterized in that: The display screen is embedded on the surface of the shell.
5. The local leakage measurement device for aircraft airtightness test according to claim 1, characterized in that: The self-adhesive film is in the shape of a bell, with a circle of tape on the inner surface of the head.
6. The local leakage measurement device for aircraft airtightness test according to claim 1, characterized in that: One end of the shell is a handle end, and the handle end is wrapped with soft rubber.