Novel oil tank dynamic ventilation or exhaust test leakage amount real-time detection device
By designing a detection device including a gas-liquid separation bottle and a liquid quantity measurement system, the problem of liquid leakage cannot be detected in real time in the dynamic ventilation performance test of the oil tank, and accurate monitoring and analysis of leakage time and quantity is achieved.
Patent Information
- Application Number
- CN202422216917.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-10
AI Technical Summary
During the test of dynamic ventilation performance of the fuel tank, the prior art cannot detect the start time of liquid leakage and the leakage amount in different time periods in real time, limiting the accuracy of product failure analysis.
A detection device including a gas-liquid separation bottle, a horizontal stabilization system and a liquid quantity measurement system are designed. The gas-liquid separation bottle separates gas and liquid. The liquid quantity measurement system uses a liquid level height sensor to measure the liquid height in real time, and converts it into volume information through the data acquisition system to display the leakage amount in real time.
It realizes real-time monitoring of liquid leakage during the test process, accurately detects the volume of liquid, helps analyze the leakage time and leakage amount in each time period, and improves the accuracy of test failure analysis.
Smart Images
Figure CN223037201U_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a detection device, and more particularly to a real-time detection device for the leakage amount of a new type of fuel tank dynamic ventilation or exhaust test, belonging to the technical field of test devices. Background Art
[0002] During the dynamic ventilation performance test of the fuel tank, the test medium (liquid) in the fuel tank may flow out of the fuel tank valve along with the gas, and the volume of this liquid needs to be measured. Under normal circumstances, this liquid can be collected by a collecting bottle with a stopper. After the test, the liquid in the collecting bottle is poured into a graduated cylinder to measure the liquid volume. However, this method cannot know the start time of liquid leakage and the leakage amount in different time periods. When analyzing the failure of the dynamic ventilation performance test of the product, it is necessary to know the accurate time of liquid leakage and the leakage amount in different time periods in order to better improve the product. Therefore, there is an urgent need for a new solution to solve this technical problem. Summary of the Invention
[0003] The present invention precisely aims at the technical problems existing in the prior art and provides a real-time detection device for the leakage amount of a new type of fuel tank dynamic ventilation or exhaust test. The technical solution is ingeniously designed and structurally compact. Through the mutual cooperation of a gas-liquid separation bottle, a horizontal stabilization system, and a liquid volume measurement system, it realizes the function of not affecting the internal pressure of the fuel tank while being able to detect the leakage amount in real time, providing an effective analysis approach for the failure analysis of project tests.
[0004] To achieve the above object, the technical solution of the present invention is as follows: A real-time detection device for the leakage amount of a new type of fuel tank dynamic ventilation or exhaust test, the detection device includes a gas-liquid separation bottle, a horizontal stabilization system, and a liquid volume measurement system. The liquid measurement system includes a liquid level height sensor and a liquid accumulation bottle. The gas-liquid separation bottle is connected to the test bench for fixing the entire device. The leakage amount real-time detection device, the test bench, and the fuel tank move together along the set road spectrum with the test bench.
[0005] The horizontal stabilization system includes a first bearing, a second bearing, a third bearing, a fourth bearing, and a U-shaped rod. The outer circles of the first bearing and the second bearing are connected to the outer circles of the third bearing and the fourth bearing through the U-shaped rod, and a horizontal stabilization system is formed by the four bearings and the U-shaped rod.
[0006] The air inlet of the gas-liquid separation bottle is connected to the fuel tank exhaust pipe, and the air outlet is connected to the carbon canister. The gas-liquid mixture at the air inlet is separated, and the gas enters the carbon canister without damping through the air outlet, having no impact on the pressure information during the test. The liquid flows into the lower liquid accumulation bottle due to its own gravity.
[0007] The bottle body of the gas-liquid separation bottle is connected to the inner circles of the first bearing and the second bearing. The V-shaped bottom hole of the gas-liquid separation bottle is connected to the upper through hole of the liquid accumulation bottle through a silica gel hose 1. A liquid level height sensor is installed on the liquid accumulation bottle. The liquid level height sensor can measure the height of the liquid in the liquid accumulation bottle in real time and feedback it to the data acquisition system. The side hole of the liquid accumulation bottle is connected to the side of the gas-liquid separation bottle through a silica gel hose 2 to prevent the liquid accumulation bottle from being airtight, which may cause the liquid in the gas-liquid separation bottle to not enter the liquid accumulation bottle through the silica gel hose. The bottle body of the liquid accumulation bottle is connected to the inner circles of the third bearing and the fourth bearing. Due to gravity, the liquid accumulation bottle always remains vertical and does not change its angle with the shaking of the test bench, so that the liquid level in the liquid accumulation bottle remains horizontal and the measurement of the liquid height is more stable. The signal cable of the liquid level height sensor is connected to the data acquisition system. According to the collected height information and the inner diameter of the liquid accumulation bottle, the height-volume conversion formula is written into the software in the acquisition system. The software converts the height information fed back by the liquid level height sensor into volume information and displays it in the form of a curve on the interface in real time.
[0008] Compared with the prior art, the present invention has the following advantages. This technical solution can monitor the liquid leakage situation in real time during the test process and can detect the volume of the liquid in real time. When the product test fails, it can assist in analyzing when the product leaks and how much the leakage volume is at each time, which cannot be achieved by the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 Schematic diagram of a real-time detection device for the leakage volume of a new fuel tank during dynamic ventilation or exhaust performance test.
[0010] Figure 2 、 Figure 3 It is a schematic diagram of the detection process.
[0011] In the figure: 1. Air outlet, 2. Air inlet, 3. Gas-liquid separation bottle, 4. First bearing, 5. Second bearing, 6. Silica gel hose 1, 7. Liquid accumulation bottle, 8. Liquid level height sensor, 9. Silica gel hose 2, 10. Third bearing, 11. Fourth bearing, 12. U-shaped rod, 13. Angle valve, 14. Data acquisition system, 15. Binding strap, 16. Fuel tank exhaust valve, 17. Test bench, 18. Carbon canister, 19. Gasoline vapor, 20. Fuel tank, 21. Gasoline, 22. Real-time detection device for leakage volume. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0012] To deepen the understanding of the present invention, the following detailed description of this embodiment is made in conjunction with the drawings.
[0013] Embodiment 1: Refer to Figure 1, a real-time detection device for the leakage volume of a new type of fuel tank dynamic ventilation or exhaust test. The detection device includes a gas-liquid separation bottle 3, a horizontal stabilization system, and a liquid volume measurement system. The liquid measurement system includes a liquid level height sensor 8 and a liquid accumulation bottle 7. The gas-liquid separation bottle is connected to the test bench frame for fixing the entire device, and the leakage volume real-time detection device, the test bench frame 17, and the fuel tank move along with the test bench frame according to the set road spectrum.
[0014] See Figure 1 , in the above solution, the horizontal stabilization system includes a first bearing 4, a second bearing 5, a third bearing 10, a fourth bearing 11, and a U-shaped rod 12. The outer circles of the first bearing 4 and the second bearing 5 are connected to the outer circles of the third bearing 10 and the fourth bearing 11 through the U-shaped rod 12, and a horizontal stabilization system is formed by four bearings and the U-shaped rod. The air inlet 2 of the gas-liquid separation bottle is connected to the fuel tank exhaust valve 16 of the fuel tank exhaust pipe, and the air outlet 1 is connected to the carbon canister 18. The gas-liquid mixture at the air inlet is separated, and the gas enters the carbon canister without damping through the air outlet, having no influence on the pressure information during the test. The liquid flows into the lower liquid accumulation bottle due to its own gravity. The bottle body of the gas-liquid separation bottle is connected to the inner circles of the first bearing and the second bearing. The V-shaped bottom hole of the gas-liquid separation bottle is connected to the upper through hole of the liquid accumulation bottle through a first silica gel hose 6. A liquid level height sensor 8 is installed on the liquid accumulation bottle. The liquid level height sensor can measure the height of the liquid in the liquid accumulation bottle in real time and feedback it to the data acquisition system 14. The side hole of the liquid accumulation bottle is connected to the side of the gas-liquid separation bottle through a second silica gel hose 9 to prevent the liquid accumulation bottle from being airtight, resulting in the liquid in the gas-liquid separation bottle being unable to enter the liquid accumulation bottle through the silica gel hose. The bottle body of the liquid accumulation bottle is connected to the inner circles of the third bearing 10 and the fourth bearing 11. The liquid accumulation bottle is always in a vertical state due to gravity and does not change its angle with the shaking of the test bench frame, keeping the liquid level in the liquid accumulation bottle horizontal and making the liquid height measurement more stable. The signal cable of the liquid level height sensor is connected to the data acquisition system 14. According to the collected height information and the inner diameter of the liquid accumulation bottle, the height-volume conversion formula is written into the software in the acquisition system. The software converts the height information fed back by the liquid level height sensor into volume information and displays it in the form of a curve on the interface in real time.
[0015] Working process: See Figure 2 , Figure 3 , for the fuel tank dynamic ventilation test, the fuel tank is filled with the gasoline required for the test. The fuel tank is fixed on the bench of the special simulation body and fixed to the equipment. The gas-liquid separation bottle of the leakage volume real-time detection device is fixed on the bench in the form of a strap. The air inlet is connected to the outlet of the fuel tank exhaust valve, and the air outlet is connected to the carbon canister, and it moves in a reciprocating motion of right tilt - horizontal - left tilt - horizontal along with the equipment. During the movement, the gas-liquid separation bottle of the leakage volume real-time acquisition device will follow and make a reciprocating tilting motion, but the liquid accumulation bottle 7 and the U-shaped rod 12 are connected through the third bearing 10 and the fourth bearing 11 and will not tilt, remaining in a vertical state.
[0016] During the test, gasoline vapor in the fuel tank is discharged through the exhaust valve on the fuel tank, the real-time leakage amount collection device, and the carbon canister. If the fuel tank exhaust valve fails to work properly, liquid gasoline will flow out of the valve. The gasoline vapor and liquid gasoline pass through the air inlet 2 of the gas-liquid separation bottle 3 of the real-time leakage amount collection device. The gasoline vapor flows out from the air outlet 1, and the liquid gasoline flows downward along the gas-liquid separation bottle 3 and flows into the liquid accumulation bottle 7 through the silica gel hose 6. Since the liquid accumulation bottle 7 is in a vertical state, the liquid level of the gasoline liquid in the liquid accumulation bottle is relatively stable and there will be no phenomenon of violent shaking of the liquid level. As the liquid level in the liquid accumulation bottle 7 rises, the liquid level height sensor 8 detects the liquid level height information in the liquid accumulation bottle 7 and transmits it to the data acquisition system 14. The data acquisition system 14 displays the liquid level height information on the display screen and records the data acquisition.
[0017] It should be noted that the above embodiments are not used to limit the protection scope of the present invention. Equivalent transformations or substitutions made on the basis of the above technical solutions all fall within the protection scope of the claims of the present invention.
Claims
1. A novel real-time leakage detection device for dynamic ventilation or exhaust test of oil tank, characterized in that: The detection device comprises a gas-liquid separation bottle (3), a horizontal stabilization system and a liquid quantity measurement system, wherein the liquid measurement system comprises The liquid level sensor (8) and the liquid accumulation bottle (7), the gas-liquid separation bottle and the test bench are connected to fix the leakage real-time detection device.
2. The novel oil tank dynamic ventilation or exhaust test leakage real-time detection device according to claim 1 is characterized in that: The horizontal stabilization system comprises a first bearing, a second bearing, a third bearing, a fourth bearing and a U-shaped rod (12); the outer circles of the first bearing and the second bearing are connected with the outer circles of the third bearing and the fourth bearing via the U-shaped rod; the horizontal stabilization system is formed by four bearings and the U-shaped rod.
3. The novel oil tank dynamic ventilation or exhaust test leakage real-time detection device according to claim 2 is characterized in that: The air inlet of the gas-liquid separation bottle is connected to the exhaust pipe of the fuel tank, and the air outlet is connected to the carbon canister, so as to separate the gas and liquid mixture at the air inlet. The gas enters the carbon canister without damping through the air outlet, which has no effect on the pressure information during the test. The liquid flows into the liquid accumulation bottle below due to its own gravity.
4. The novel oil tank dynamic ventilation or exhaust test leakage real-time detection device according to claim 3 is characterized in that: The body of the gas-liquid separation bottle is connected to the inner circles of the first bearing and the second bearing. The V-shaped bottom hole of the gas-liquid separation bottle (3) is connected to the upper through hole of the liquid accumulation bottle through a silicone hose (6). A liquid level sensor (8) is installed on the liquid accumulation bottle. The liquid level sensor can measure the height of the liquid in the liquid accumulation bottle in real time and feed it back to the data acquisition system (14). The side hole of the liquid accumulation bottle is connected to the side of the gas-liquid separation bottle through a silicone hose (9) to prevent the liquid accumulation bottle from being sealed, so that the liquid in the gas-liquid separation bottle cannot enter the liquid accumulation bottle through the silicone hose. The body of the liquid accumulation bottle is connected to the inner circles of the third bearing (10) and the fourth bearing (11). The signal cable of the liquid level sensor is connected to the data acquisition system.
5. The novel real-time detection device for leakage in dynamic ventilation or exhaust test of fuel tank according to claim 4 is characterized in that: An angle valve (13) is provided at the bottom of the liquid collection bottle for pouring out the liquid after the test.