Automobile oil way pipe fitting air tightness detection device

Abstract

The utility model relates to the field of air tightness detection, and particularly discloses an air tightness detection device for an automobile oil way pipe fitting, which comprises an airtight tank, a sealing plug is arranged at the upper end of the airtight tank, a liquid injection funnel is arranged in the sealing plug, and an elbow joint is arranged on one side of the liquid injection funnel and positioned in the sealing plug. An oil way pipe fitting is arranged on one side of the elbow joint, a hose is connected between the oil way pipe fitting and the elbow joint, sealing gaskets are installed at the two ends of the hose, two threaded sleeves are connected to the outer side of the hose in a sleeving mode, and an air injection pipe is arranged in the end, away from the hose, of the oil way pipe fitting. The bottom of the liquid injection funnel is subjected to liquid sealing through a solution, the sealing cover at the end of the gas injection pipe is integrally inserted into the other end of the oil way pipe fitting, the conical plug extends into the oil way pipe fitting to be extruded to seal a passage of the gas injection pipe, and then the solution is injected into the liquid injection funnel. And the injected liquid can continuously flow into the airtight tank.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing, specifically an airtightness testing device for automotive oil line components. Background Technology

[0002] Automotive fuel line components are an important part of the automotive fuel system, mainly including: high-pressure fuel line pipes, fuel lines, filler pipes, return fuel lines, oil cooling pipes, etc. Air tightness testing of automotive fuel line components is a crucial step in ensuring that fuel leaks do not occur during use. The air tightness of automotive fuel line components ensures their safety and reliability during operation. Testing methods mainly include: pressure decay method, vacuum decay method, mass flow test method, and water immersion method.

[0003] However, the water immersion method currently available on the market requires the entire pipe to be immersed in the liquid for pumping. Since some pipes are not easy to bend, immersion in the solution is inconvenient. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an airtightness testing device for automotive oil line components, which solves the problems mentioned in the background.

[0005] This utility model provides the following technical solution: a device for testing the airtightness of automotive oil circuit fittings, comprising an airtight container, a sealing plug installed at the upper end of the airtight container, a liquid injection funnel installed inside the sealing plug, a bent pipe joint installed on one side of the liquid injection funnel inside the sealing plug, an oil circuit fitting provided on one side of the bent pipe joint, a hose connected between the oil circuit fitting and the bent pipe joint, sealing gaskets installed at both ends of the hose, two threaded sleeves fitted on the outside of the hose, and an air injection pipe provided inside the end of the oil circuit fitting away from the hose.

[0006] As a further improvement of this utility model: a conical plug is installed on the outer wall of the air injection tube, and a sealing cap is installed at one end of the conical plug on the outer side of the air injection tube.

[0007] As a further improvement of this utility model, threaded joints are provided on the outer sides of both ends of the oil pipe fitting.

[0008] As a further improvement of this utility model: the outer wall of the injection funnel is provided with graduation lines, and the injection funnel and the bent pipe joint are both connected to the sealing plug.

[0009] As a further improvement of this utility model: the injection funnel and the bent pipe joint are both made of glass, and the hose is made of rubber.

[0010] As a further improvement of this utility model, the threaded sleeve is engaged and rotatably connected with the threaded joint.

[0011] As a further improvement of this utility model, the length of the injection funnel is greater than the length of the bent pipe joint.

[0012] As a further improvement of this utility model, the sealing cap is rotatably connected to the threaded joint.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The solution seals the bottom of the injection funnel. The sealing cap at the end of the air injection pipe is inserted into the other end of the oil pipe fitting. The conical plug is inserted into the oil pipe fitting and squeezed to seal the passage of the air injection pipe. Then, the solution is injected into the injection funnel. If the overall airtightness of the oil pipe fitting is not good, the injected liquid can continue to flow into the airtight tank.

[0015] By connecting an external gas source to the gas injection pipe, gas is pumped through the gas injection pipe. If the airtightness is good, the solution inside the airtight container will move upwards towards the injection funnel. Therefore, airtightness can be tested in various ways. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a device for testing the airtightness of automotive fuel line components.

[0017] Figure 2 This is a schematic diagram of the hose structure in an automotive fuel line pipe airtightness testing device.

[0018] Figure 3 This is a cross-sectional view of the entire device in an automotive oil line pipe airtightness testing device.

[0019] Figure 4 This is a schematic diagram of the installation structure of the air injection pipe in an automotive fuel line pipe airtightness testing device;

[0020] Figure 5 This is a side view of the entire device in an automotive oil line pipe airtightness testing device.

[0021] In the diagram: 1. Airtight container; 2. Sealing plug; 3. Liquid injection funnel; 4. Bend joint; 5. Hose; 6. Oil pipe fittings; 7. Air injection pipe; 501. Sealing gasket; 502. Threaded sleeve; 601. Threaded joint; 701. Conical plug; 702. Sealing cap. Detailed Implementation

[0022] 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.

[0023] like Figure 1-5 As shown, this embodiment provides an airtightness testing device for automotive oil line components, including an airtight container 1. A sealing plug 2 is installed at the upper end of the airtight container 1. A liquid injection funnel 3 is installed inside the sealing plug 2. The outer wall of the liquid injection funnel 3 is provided with scale lines. A bent pipe connector 4 is installed on one side of the liquid injection funnel 3 inside the sealing plug 2. Both the liquid injection funnel 3 and the bent pipe connector 4 are connected to the sealing plug 2. The length of the liquid injection funnel 3 is greater than the length of the bent pipe connector 4. An oil line component 6 is provided on one side of the bent pipe connector 4. A hose 5 connects the oil line component 6 and the bent pipe connector 4. All pipe fittings 4 are made of glass, and hose 5 is made of rubber. Both ends of hose 5 are fitted with sealing gaskets 501. Two threaded sleeves 502 are fitted onto the outside of hose 5. An air injection pipe 7 is installed inside the oil circuit fitting 6 at the end furthest from hose 5. A conical plug 701 is installed on the outer wall of the air injection pipe 7. A sealing cap 702 is installed at one end of the conical plug 701 outside the air injection pipe 7. Threaded fittings 601 are installed on the outer sides of both ends of oil circuit fitting 6. The threaded sleeves 502 and threaded fittings 601 are engaged and rotated. The sealing caps 702 and threaded fittings 601 are engaged and rotated.

[0024] The working principle of this utility model is as follows: During use, the injection funnel 3 and the bent pipe connector 4 are inserted into the sealing plug 2, sealing the upper end of the airtight container 1. A color that is easily distinguishable is injected into the water, and the solution is then injected into the airtight container 1 through the injection funnel 3, creating a liquid seal at the bottom of the injection funnel 3. The sealing gasket 501 at the end of the hose 5 is then tied to one end of the bent pipe connector 4 and the oil pipe fitting 6, respectively. The two threaded sleeves 502 on the upper part of the hose 5 are moved to the outside of the two sealing gaskets 501, and torque is applied to fix the oil pipe fitting 6 and the bent pipe connector 4. Finally, the sealing cap 70 at the end of the air injection pipe 7 is... 2. The entire assembly is inserted into the other end of the oil pipe fitting 6. After the sealing cap 702 is engaged with the other end of the oil pipe fitting 6 by continuously applying torque, the conical plug 701 inside extends into the oil pipe fitting 6 and squeezes to seal the passage of the air injection pipe 7. Then, the solution is injected into the liquid injection funnel 3. When the overall airtightness of the oil pipe fitting 6 is not good, the injected liquid can continue to flow into the airtight tank 1. When the airtightness is good, the solution will not fall into the liquid injection funnel 3. At the same time, the air injection pipe 7 can be connected to an external gas source and gas can be pumped using the air injection pipe 7. When the airtightness is good, the solution inside the airtight tank 1 will move upward to the top of the liquid injection funnel 3.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] 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. A device for testing the airtightness of automotive fuel line components, comprising an airtight container (1), characterized in that, The upper end of the airtight container (1) is equipped with a sealing plug (2), and a liquid injection funnel (3) is installed inside the sealing plug (2). A bent pipe joint (4) is installed on one side of the liquid injection funnel (3) inside the sealing plug (2). An oil circuit fitting (6) is provided on one side of the bent pipe joint (4). A hose (5) is connected between the oil circuit fitting (6) and the bent pipe joint (4). Sealing gaskets (501) are installed at both ends of the hose (5). Two threaded sleeves (502) are sleeved on the outside of the hose (5). An air injection pipe (7) is provided inside the end of the oil circuit fitting (6) away from the hose (5).

2. The automotive oil line fitting airtightness testing device according to claim 1, characterized in that, A conical plug (701) is installed on the outer wall of the gas injection pipe (7), and a sealing cap (702) is installed on one end of the conical plug (701) on the outside of the gas injection pipe (7).

3. The device for testing the airtightness of automotive oil line components according to claim 2, characterized in that, Both ends of the oil pipe fitting (6) are provided with threaded joints (601).

4. The automotive oil line fitting airtightness testing device according to claim 1, characterized in that, The outer wall of the injection funnel (3) is provided with scale lines, and the injection funnel (3) and the bent pipe joint (4) are both connected to the sealing plug (2).

5. The device for testing the airtightness of automotive oil line components according to claim 1, characterized in that, The injection funnel (3) and the bend connector (4) are both made of glass, and the hose (5) is made of rubber.

6. The automotive oil line fitting airtightness testing device according to claim 3, characterized in that, The threaded sleeve (502) is engaged and rotatably connected with the threaded joint (601).

7. The automotive oil line fitting airtightness testing device according to claim 1, characterized in that, The length dimension of the injection funnel (3) is greater than the length dimension of the bent pipe joint (4).

8. The automotive oil line fitting airtightness testing device according to claim 3, characterized in that, The sealing cap (702) is engaged and rotatably connected with the threaded joint (601).

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