Fuel tank air tightness detection device

Abstract

The utility model discloses an air tightness detection device for an oil tank. The air tightness detection device comprises a workbench, a side plate A and a mounting plate, a concave frame is arranged at the top of the workbench, and a reinforcing plate is arranged on the inner side of the concave frame. The side plate A is arranged on one side of the top of the workbench, the side plate B is arranged on the other side of the top of the workbench, and the oil tank is arranged between the side plate A and the side plate B; the sealing block is tightly attached to the oil inlet of the oil tank, the gas meter and the displayer are matched to accurately monitor gas parameters, whether the oil tank has the gas tightness problem or not can be accurately judged, potential safety hazards such as fuel oil leakage caused by poor gas tightness are effectively avoided, and safety and reliability of the oil tank in follow-up use are guaranteed; through the arrangement of the cylinder B and the clamping plate, the oil tank can be firmly fixed in the detection process, and the sealing block and the oil inlet are always kept in a good sealing state, so that the detection accuracy and stability are improved, and the detection error caused by the position change of the oil tank is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fuel tank airtightness testing technology, specifically a fuel tank airtightness testing device. Background Technology

[0002] The fuel tank is one of the most important components of a car, and its sealing performance is the most important performance characteristic of the fuel tank. During the production of the whole vehicle, the fuel tank must undergo 100% sealing test, and it can only be used after its sealing performance is confirmed to be qualified.

[0003] In existing technologies, traditional fuel tank airtightness testing methods usually rely on manual visual inspection or simple sealing structures. They lack real-time monitoring and quantitative analysis of key parameters such as gas pressure and leakage rate under sealed conditions. This makes it impossible to accurately identify minor gas leaks caused by poor sealing of the fuel tank, thus making it difficult to effectively prevent safety hazards caused by fuel evaporation or leakage.

[0004] In light of this, we have developed a fuel tank airtightness testing device. Utility Model Content

[0005] The purpose of this invention is to provide a fuel tank airtightness testing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fuel tank airtightness testing device, comprising: a workbench, a side plate A, and a mounting plate;

[0007] A concave frame is provided on the top of the workbench, and the concave frame is fixedly connected to the workbench. A reinforcing plate is provided on the inner side of the concave frame, and the reinforcing plate is fixedly connected to the concave frame.

[0008] The side plate A is set on one side of the top of the workbench and is fixedly installed between the side plate A and the workbench. The other side of the top of the workbench is set with a side plate B and is fixedly installed between the side plate B and the workbench. An oil tank is set between the side plate A and the side plate B.

[0009] The mounting plate is set on the surface of the workbench and the reinforcing plate. A cylinder A is set on the surface of the mounting plate. A conduit is connected to one side of the cylinder A and the conduit is connected to the air exchange head.

[0010] The output end of cylinder A is equipped with an airtightness detection mechanism. The airtightness detection mechanism is used in conjunction with a connecting plate, connector, air pipe and sealing block to make the sealing block contact the top of the oil tank for detection.

[0011] Preferably, the airtightness detection mechanism includes an interface connected to one side of the air pipe, the interface being connected to the air pipe, the connecting plate being connected to the output end of cylinder A, the connector being connected to the bottom of the connecting plate, the air pipe being connected to the bottom of the connector, a base plate being connected to the bottom of the air pipe, the air pipe being connected to the base plate, the sealing block being connected to the surface of the base plate, and an oil inlet being provided on the surface of the oil tank, the oil inlet being integrally formed with the oil tank, and the sealing block being located on the surface of the oil inlet.

[0012] Preferably, a positioning plate is connected between the concave frame and the reinforcing plate, and the positioning plate is fixedly connected to the concave frame and the reinforcing plate. An air exchange head is connected to the surface of the positioning plate.

[0013] Preferably, a cylinder B is connected to the side of the side plate B, and the cylinder B is connected to the side of the side plate B by screws. The output end of the cylinder B is connected to a clamp plate, which is located on one side of the oil tank and facilitates the fixing of the oil tank.

[0014] Preferably, the mounting plate is connected to the concave frame and the reinforcing plate by bolt A, which is used to mount the mounting plate on the surface of the concave frame and the reinforcing plate.

[0015] Preferably, the surface of the cylinder A is connected to a bolt B, and the bolt B extends into the interior of the mounting plate. The bolt B facilitates fixing the cylinder A to the surface of the mounting plate, thus forming a fixed structure.

[0016] Preferably, a display is connected to the top of the concave frame, and the surface of the display is convenient for displaying data or other results.

[0017] Preferably, an air inlet pipe is connected to one side of the interface surface, which facilitates the entry of the detected gas into the interface. The air inlet pipe is in contact with the air exchange head, and a gas meter is provided on the other side of the air exchange head.

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

[0019] (1) By tightly fitting the sealing block with the oil inlet of the oil tank, and with the precise monitoring of gas parameters by the gas gauge and display instrument, it is possible to accurately determine whether there is an airtightness problem in the oil tank, effectively avoiding safety hazards such as fuel leakage caused by poor airtightness, and ensuring the safety and reliability of the oil tank in subsequent use.

[0020] (2) By setting cylinder B and clamping plate, the oil tank can be firmly fixed during the test to prevent the oil tank from shaking or shifting, and to ensure that the sealing block and the oil inlet always maintain a good sealing state, thereby improving the accuracy and stability of the test and avoiding test errors caused by changes in the position of the oil tank. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of cylinder A and the airtightness detection mechanism of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the workbench, oil tank and cylinder B of this utility model when connected;

[0024] Figure 4 This is a schematic diagram of the structure of the fuel tank of this utility model when connected in three dimensions.

[0025] In the diagram: 1. Workbench; 2. Concave frame; 3. Display instrument; 4. Reinforcing plate; 5. Mounting plate; 6. Cylinder A; 7. Bolt A; 8. Positioning plate; 9. Air exchange head; 10. Connecting plate; 11. Connector; 12. Air pipe; 13. Base plate; 14. Sealing block; 15. Air inlet pipe; 16. Interface; 17. Side plate A; 18. Side plate B; 19. Cylinder B; 20. Oil tank; 21. Clamping plate; 22. Oil inlet; 23. Bolt B. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-4 This utility model provides a technical solution: a fuel tank airtightness testing device, comprising: a workbench 1, a concave frame 2 provided on the top of the workbench 1, and a reinforcing plate 4 provided on the inner side of the concave frame 2;

[0028] Side plate A17 is provided on one side of the top of the workbench 1, and side plate B18 is provided on the other side of the top of the workbench 1. An oil tank 20 is provided between side plate A17 and side plate B18.

[0029] Mounting plate 5 is disposed on the surface of workbench 1 and reinforcing plate 4, and cylinder A6 is disposed on the surface of mounting plate 5;

[0030] The output end of the cylinder A6 is equipped with an airtightness detection mechanism. Through the cooperation of the connecting plate 10, connector 11, air pipe 12 and sealing block 14 of the airtightness detection mechanism, the sealing block 14 is brought into contact with the top of the oil tank 20 for detection.

[0031] The airtightness testing mechanism includes an interface 16 connected to one side of the air pipe 12, the interface 16 being connected to the air pipe 12, the connecting plate 10 being connected to the output end of the cylinder A6, the connector 11 being connected to the bottom of the connecting plate 10, the air pipe 12 being connected to the bottom of the connector 11, the bottom of the air pipe 12 being connected to a base plate 13, the air pipe 12 being connected to the base plate 13, the sealing block 14 being connected to the surface of the base plate 13, and the surface of the oil tank 20 having an oil inlet 22, the oil inlet 22 being integrally formed with the oil tank 20, and the sealing block 14 being located on the surface of the oil inlet 22.

[0032] A positioning plate 8 is connected between the concave frame 2 and the reinforcing plate 4. The positioning plate 8 is fixedly connected to the concave frame 2 and the reinforcing plate 4. An air exchange head 9 is connected to the surface of the positioning plate 8.

[0033] A cylinder B19 is connected to the side of the side plate B18. The cylinder B19 is connected to the side of the side plate B18 by screws. The output end of the cylinder B19 is connected to a clamping plate 21. The clamping plate 21 is located on one side of the oil tank 20. The clamping plate 21 facilitates the fixing of the oil tank 20.

[0034] The mounting plate 5 is connected to the concave frame 2 and the reinforcing plate 4 by bolts A7. Bolts A7 are used to mount the mounting plate 5 on the surface of the concave frame 2 and the reinforcing plate 4.

[0035] Bolt B23 is connected to the surface of cylinder A6, and bolt B23 extends into the interior of mounting plate 5. The setting of bolt B23 facilitates fixing cylinder A6 to the surface of mounting plate 5 to form a fixed structure.

[0036] The top of the concave frame 2 is connected to a display 3, and the surface of the display 3 is convenient for displaying data or other results.

[0037] An air inlet pipe 15 is connected to one side of the surface of the interface 16. The air inlet pipe 15 facilitates the entry of the detected gas into the interface 16. The air inlet pipe 15 is in contact with the air exchange head 9. A gas meter is provided on the other side of the air exchange head 9.

[0038] Specifically, during use, the oil tank 20 to be tested is placed on the workbench 1, between side plate A17 and side plate B18. At this time, the position of the oil tank 20 is initially determined, and side plate A17 and side plate B18 play a certain limiting role. The cylinder B19 is activated, and the output end of the cylinder B19 pushes the clamping plate 21 to move towards the side of the oil tank 20 until the clamping plate 21 tightly clamps the oil tank 20, so that the oil tank 20 remains stable during the test and avoids the test results being affected by shaking.

[0039] When cylinder A6 is activated, its output end drives connecting plate 10 downwards. Since connecting plate 10 is connected to connector 11, which in turn is connected to air pipe 12, and bottom plate 13 is connected to air pipe 12, with sealing block 14 attached to the surface of bottom plate 13, as connecting plate 10 descends, sealing block 14 gradually approaches the oil inlet 22 at the top of oil tank 20 until it tightly adheres to the surface of oil inlet 22, sealing it. Then, gas is supplied to interface 16 through air inlet pipe 15. The gas passes through air pipe 12 and bottom plate 13 sequentially, entering the interior of oil tank 20. During this process, sealing block 14... The gas is tightly fitted to the surface of the oil inlet 22. Gas passes through the gas exchange head 9. The gas gauge on the other side of the gas exchange head 9 can monitor the gas flow rate, pressure and other parameters in real time. These parameters can reflect the gas state inside the oil tank 20. At the same time, the display 3 on the top of the concave frame 2 will display relevant detection data, such as pressure value and flow rate change curve. The operator can judge whether the airtightness of the oil tank 20 is good by observing the display 3. If there is a leak in the oil tank 20, the gas will escape from the leak, causing the parameters monitored by the gas gauge to change. The data on the display 3 will also change accordingly. The operator can find the airtightness problem of the oil tank 20 based on this.

[0040] After the test is completed, the inside of the fuel tank 20 needs to be ventilated. At this time, the gas is discharged through the vent head 9, so that the inside of the fuel tank 20 returns to normal pressure, so that the next test operation can be carried out.

[0041] 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 oil tank airtightness detection device characterized by comprising: include: A workbench (1) is provided with a concave frame (2) on the top of the workbench (1) and a reinforcing plate (4) is provided on the inner side of the concave frame (2); Side plate A (17) is provided on one side of the top of the workbench (1), and side plate B (18) is provided on the other side of the top of the workbench (1). An oil tank (20) is provided between side plate A (17) and side plate B (18). Mounting plate (5), which is disposed on the surface of workbench (1) and reinforcing plate (4), and cylinder A (6) is disposed on the surface of mounting plate (5); The output end of the cylinder A (6) is provided with an airtightness detection mechanism. The airtightness detection mechanism is used in conjunction with the connecting plate (10), connector (11), air pipe (12) and sealing block (14) to make the sealing block (14) contact the top of the oil tank (20) for detection.

2. The oil tank airtightness detection device according to claim 1, characterized by, The airtightness testing mechanism includes an interface (16) connected to one side of the air pipe (12), a connecting plate (10) connected to the output end of the cylinder A (6), a connector (11) connected to the bottom of the connecting plate (10), the air pipe (12) connected to the bottom of the connector (11), a base plate (13) connected to the bottom of the air pipe (12), a sealing block (14) connected to the surface of the base plate (13), and an oil inlet (22) opened on the surface of the oil tank (20), with the sealing block (14) located on the surface of the oil inlet (22).

3. The oil tank airtightness detection device according to claim 1, characterized by, A positioning plate (8) is connected between the concave frame (2) and the reinforcing plate (4), and an air exchange head (9) is connected to the surface of the positioning plate (8).

4. The oil tank airtightness detection device according to claim 1, characterized by The side plate B (18) is connected to a cylinder B (19), and the output end of the cylinder B (19) is connected to a clamping plate (21), which is located on one side of the oil tank (20).

5. The oil tank airtightness detection device according to claim 1, characterized by The mounting plate (5) is connected to the concave frame (2) and the reinforcing plate (4) by bolts A (7).

6. The oil tank airtightness detection device according to claim 1, characterized by The surface of the cylinder A (6) is connected to a bolt B (23), and the bolt B (23) extends into the interior of the mounting plate (5).

7. The oil tank airtightness detection device according to claim 1, characterized by A display (3) is connected to the top of the concave frame (2).

8. The oil tank airtightness detection device according to claim 2, characterized by, An air inlet pipe (15) is connected to one side of the surface of the interface (16), the air inlet pipe (15) is in contact with the air exchange head (9), and an air meter is provided on the other side of the air exchange head (9).

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