航空煤油水分检测装置
By designing a dual one-way valve and spring mechanism for the aviation kerosene water testing device, the problem of distorted test results caused by oil sample backflow and mixing in the existing technology has been solved, realizing accurate detection of water content in aviation kerosene and improving the reliability of test results and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI LEIHANG MASCH MFG CO LTD
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for detecting moisture in aviation kerosene are inconvenient to operate and prone to sample reflux and mixing, resulting in distorted test results that cannot accurately reflect the moisture content.
Design an aviation kerosene water testing device. It adopts a double one-way valve structure to ensure unidirectional flow of oil sample, and combines a spring mechanism to realize automatic sampling. The test paper box is placed in the test bottle to avoid oil sample mixing, realizing closed sampling and visual detection.
It achieves pure transmission and accurate detection of oil samples, avoids oil sample backflow and cross-contamination, improves the accuracy and reliability of test results, simplifies the operation process, and reduces the difficulty of the work.
Smart Images
Figure CN224518555U_ABST
Abstract
Claims
1. An aviation kerosene water content detection device characterized by comprising: include: The sampling tube (1) is provided with a reciprocating piston (12) inside. The inlet end of the sampling tube (1) is provided with a first one-way valve (11), which allows the oil sample to flow into the sampling tube in only one direction. The test bottle (2) is connected to the side wall of the sampling tube (1) along a direction perpendicular to the axis of the sampling tube (1); the inner cavity of the test bottle (2) is connected to the inner cavity of the sampling tube (1); a second one-way valve (21) is provided at the inlet end of the test bottle (2), and the second one-way valve (21) only allows the oil sample to flow into the test bottle in one direction; The test strip box (22) is placed inside the test bottle (2), and its top surface is connected to the bottom surface of the second one-way valve (21).
2. The aviation kerosene water detection device according to claim 1, characterized in that, A spring (13) is provided in the cavity between the front end of the sampling tube (1) and the piston (12), with one end abutting against the inner wall of the front end of the sampling tube (1) and the other end abutting against the piston (12).
3. The aviation kerosene water detection device according to claim 1, characterized in that, The first one-way valve (11) is a detachable structure and is threadedly connected to the sampling tube (1).
4. The aviation kerosene water detection device according to claim 1, characterized in that, The first one-way valve (11) includes a valve body and a flexible valve (111) located at the valve port. The flexible valve has a sheet-like structure that can completely cover the valve port. One edge of the valve is fixed to the circumferential flange of the valve port, while the other edges are free edges. Under the action of pressure difference, it can undergo elastic deformation.
5. The aviation kerosene water detection device according to claim 1, characterized in that, The inner wall of the oil sample test bottle (2) is provided with an annular boss (23), which serves as the support surface of the test paper box and divides the inner cavity of the test bottle into an upper test paper receiving cavity and a lower oil sample measuring cavity.
6. The aviation kerosene water detection device according to claim 1, characterized in that, The second one-way valve (21) is a hollow structure with threads on both its inner and outer walls. The inner wall thread is connected to the side wall thread of the sampling tube (1), and the outer wall thread is connected to the inner wall thread of the test bottle (2).
7. The aviation kerosene water detection device according to claim 1, characterized in that, The test paper box (22) consists of a conical shell and a cylindrical pressure sleeve that fits into its inner cavity; the shell is a vertically penetrating conical cylinder with an annular protrusion on the inner side of the bottom end, which supports the lower edge of the test paper (223), and the annular protrusion surrounds and forms a first central liquid passage hole; the bottom end of the pressure sleeve is provided with a second central liquid passage hole, and its bottom annular surface presses against the upper edge of the test paper.
8. The aviation kerosene water detection device according to claim 1, characterized in that, A sealing groove is provided on the outer circumferential surface of the front part of the piston (12), and a sealing ring is embedded in the sealing groove. The sealing ring is in close contact with the inner wall of the sampling tube (1).
9. The aviation kerosene water detection device according to claim 1, characterized in that, The piston consists of a piston head and a piston rod; the sampling tube (1) has an end cap with a central hole at its end, the piston rod extends out from the central hole of the end cap, and the piston rod slides in conjunction with the central hole of the end cap; the outer diameter of the piston head is larger than the diameter of the central hole of the end cap.
10. The aviation kerosene water content detection device according to any one of claims 1 to 9, characterized by Both the test bottle (2) and the test paper box (22) are made of transparent material.