Sealing joint for testing and detecting fuel injection system

Abstract

The utility model provides a sealing joint for testing and detecting a fuel injection system. The sealing joint comprises a conveying pipe; the first joint is connected to one end of the conveying pipe in a sliding manner; the second joint is connected to the other end of the conveying pipe in a sliding manner; one end of the first connector is provided with a conical inlet used for being in butt joint with a tester, and one end of the second connector is provided with a conical outlet used for being in butt joint with a fuel injection system. A plurality of sliding grooves are formed in the outer walls of the two ends of the conveying pipe. The conveying pipe is connected with the first connector and the second connector in a sliding mode, gaps are formed between the conveying pipe and the first connector and the second connector, vibration can be effectively prevented in the experiment process, shaking is prevented from being transmitted to the first connector and the second connector, and damage to the connecting position is avoided. The conveying pipe is prevented from colliding with the first connector and the second connector, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of workpiece flow test, in particular to a sealing joint for testing and detecting a fuel injection system. Background Art

[0002] The fuel injection system is a critical component of aircraft engines. After machining and forming, it requires flow rate testing. Using a tester, a test medium is injected through the fuel injection system's inlet and ejected from the nozzle to verify whether the flow rate meets design requirements. During testing, the fuel injection system's connector must be connected to the tester to ensure a sealed connection between the inlet and the tester.

[0003] Reference is made to the prior art, which is available in China under the utility model patent publication number CN219796426U. This prior art specifically relates to a sealed joint for testing fuel injection systems, comprising: a first joint having a docking groove at one end, a ring-shaped inserting groove within the docking groove, a sealing ring within the inserting groove, and a first through-hole at the bottom of the docking groove extending to the other end of the first joint; a second joint, sealed and fixedly connected to the first joint, having a second through-hole; and a connecting sleeve, rotatably coupled to the first joint, having an internal threaded inner wall. This prior art primarily reduces component damage.

[0004] The above-mentioned prior art has the following deficiencies in actual implementation: during the test, the rapid flow rate of fuel inside the first joint and the second joint will cause shaking, and the prior art cannot buffer the generated shaking, so the interface is easily damaged by shaking. Utility Model Content

[0005] In order to solve the above problems, the utility model proposes a sealing joint for testing and detecting a fuel injection system, so as to solve the above problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides a sealing joint for testing and detecting a fuel injection system, comprising: a delivery pipe; a first joint slidably connected to one end of the delivery pipe; a second joint slidably connected to the other end of the delivery pipe; one end of the first joint is provided with a conical inlet for docking a tester, and one end of the second joint is provided with a conical outlet for docking a fuel injection system; a plurality of sliding grooves are provided on the outer walls of both ends of the delivery pipe, and a plurality of sliders are provided inside the other ends of the first joint and the second joint, and the sliders are slidably connected to the sliding grooves; gaps are formed between the two ends of the delivery pipe and the first joint and the second joint.

[0007] Furthermore, an extension tube is provided at the other end of the first joint, one end of the extension tube extends to the interior of the slider, and one end of the extension tube is provided with a side block, the outer wall of the side block contacts the inner wall of the delivery tube.

[0008] Furthermore, the other end of the delivery pipe extends to the inside of the tapered outlet, and the other end of the delivery pipe is provided with a tapered feeding port.

[0009] Furthermore, a plurality of grooves are formed on one end of the first joint and the second joint close to the delivery pipe, a spring is provided inside the groove, and one end of the spring is connected to the delivery pipe.

[0010] Furthermore, a connecting sleeve is sleeved on the outer wall of the second joint, and an inner wall of the connecting sleeve is provided with an internal thread.

[0011] Compared with the prior art, the beneficial effect of the present invention is that the delivery pipe is slidably connected to the first joint and the second joint, and there is a gap between them, which makes it possible to effectively avoid shock during the experiment and prevent shaking from being transmitted to the first joint and the second joint and causing damage to the connection. At the same time, the delivery pipe can be buffered and protected by the provided spring to prevent the delivery pipe from colliding with the first joint and the second joint, thereby extending its service life.

[0012] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the first three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the second three-dimensional structure of the utility model;

[0015] Figure 3 It is a cross-sectional view of the delivery pipe in the present utility model;

[0016] Figure 4 It is a cross-sectional view of the first joint in the present utility model;

[0017] Figure 5 This utility model is attached Figure 4 A magnified view of center.

[0018] In the figure: 1. conveying pipe; 2. first joint; 3. second joint; 4. connecting sleeve; 5. extension pipe; 6. conical inlet; 7. conical outlet; 8. conical feed port; 9. chute; 10. slider; 11. groove; 12. spring; 13. edge block. DETAILED DESCRIPTION

[0019] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0020] Reference Figure 1-5 As shown, a sealing joint for testing and inspecting a fuel injection system includes: a delivery pipe 1; a first joint 2 slidably connected to one end of the delivery pipe 1; a second joint 3 slidably connected to the other end of the delivery pipe 1; one end of the first joint 2 is provided with a tapered inlet 6 for docking a tester, and one end of the second joint 3 is provided with a tapered outlet 7 for docking a fuel injection system; a plurality of slide grooves 9 are provided on the outer walls of both ends of the delivery pipe 1, and a plurality of sliders 10 are provided inside the other ends of the first joint 2 and the second joint 3, and the sliders 10 are slidably connected to the slide grooves 9; gaps are formed between the two ends of the delivery pipe 1 and the first joint 2 and the second joint 3, and a plurality of grooves 11 are provided on the ends of the first joint 2 and the second joint 3 close to the delivery pipe 1, and a spring 12 is provided inside the groove 11, and one end of the spring 12 is connected to the delivery pipe 1, and a connecting sleeve 4 is sleeved on the outer wall of the second joint 3, and an internal thread is provided on the inner wall of the connecting sleeve 4.

[0021] The utility model provides a technical solution. When in use, the first connector 2 is docked with the tester, the output end of the tester is inserted into the inside of the conical inlet 6, and then the second connector 3 is docked with the fuel injection system through the conical outlet 7, so that the tester is connected to the fuel injection system. The delivery pipe 1 is slidably connected to the first connector 2 and the second connector 3, and there is a gap between them, which allows for effective shock absorption during the experiment and prevents shaking from being transmitted to the first connector 2 and the second connector 3 and causing damage to the connection. At the same time, the delivery pipe 1 can be buffered and protected by the provided spring 12 to prevent the delivery pipe 1 from colliding with the first connector 2 and the second connector 3, thereby extending its service life. The provided slide groove 9 and slider 10 facilitate the sliding of the delivery pipe 1 and prevent the delivery pipe 1 from being disconnected from the first connector 2 and the second connector 3. The provided connecting sleeve 4 can be threadedly connected to the fuel injection system to deepen the effect of the connection and fixation.

[0022] Preferably: an extension tube 5 is provided at the other end of the first joint 2, one end of the extension tube 5 extends to the interior of the slider 10, one end of the extension tube 5 is provided with a side block 13, the outer wall of the side block 13 contacts the inner wall of the conveying tube 1, the other end of the conveying tube 1 extends to the interior of the tapered outlet 7, and the other end of the conveying tube 1 is provided with a tapered feeding port 8.

[0023] Specifically, the side block 13 can prevent overflow caused by backflow, and the conical feeding port 8 can facilitate feeding into the interior of the second joint 3.

[0024] Working principle: When in use, dock the first connector 2 with the tester, insert the output end of the tester into the inside of the conical inlet 6, and then dock the second connector 3 with the fuel injection system through the conical outlet 7, so that the tester is connected to the fuel injection system. The delivery pipe 1 is slidably connected to the first connector 2 and the second connector 3, and there is a gap between them, which allows for effective shock absorption during the experiment and prevents shaking from being transmitted to the first connector 2 and the second connector 3, causing damage to the connection. At the same time, the spring 12 provided can provide buffering protection for the delivery pipe 1, preventing the delivery pipe 1 from colliding with the first connector 2 and the second connector 3, thereby extending its service life. The slide groove 9 and the slider 10 provided facilitate the sliding of the delivery pipe 1, while preventing the delivery pipe 1 from being disconnected from the first connector 2 and the second connector 3. The connecting sleeve 4 provided can be threadedly connected to the fuel injection system to deepen the effect of the connection and fixation.

[0025] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A sealing joint for testing a fuel injection system, characterized in that: include: Delivery pipe (1); A first joint (2) slidably connected to one end of the delivery pipe (1); a second joint (3) slidably connected to the other end of the delivery pipe (1); One end of the first joint (2) is provided with a tapered inlet (6) for connecting to a tester, and one end of the second joint (3) is provided with a tapered outlet (7) for connecting to a fuel injection system; The outer walls of both ends of the delivery pipe (1) are provided with a plurality of slide grooves (9), and the other ends of the first joint (2) and the second joint (3) are provided with a plurality of sliders (10), and the sliders (10) are slidably connected to the slide grooves (9); Gaps are formed between the two ends of the delivery pipe (1) and the first joint (2) and the second joint (3).

2. A sealing joint for testing a fuel injection system according to claim 1, characterized in that: An extension tube (5) is provided at the other end of the first joint (2), one end of the extension tube (5) extends to the interior of the slider (10), and an edge block (13) is provided at one end of the extension tube (5), the outer wall of the edge block (13) being in contact with the inner wall of the delivery tube (1).

3. The sealing joint for testing a fuel injection system according to claim 1, characterized in that: The other end of the delivery pipe (1) extends to the interior of the tapered outlet (7), and the other end of the delivery pipe (1) is provided with a tapered feeding port (8).

4. The sealing joint for testing a fuel injection system according to claim 1, characterized in that: The first joint (2) and the second joint (3) are both provided with a plurality of grooves (11) at one end close to the delivery pipe (1), a spring (12) is provided inside the groove (11), and one end of the spring (12) is connected to the delivery pipe (1).

5. The sealing joint for testing a fuel injection system according to claim 1, characterized in that: A connecting sleeve (4) is sleeved on the outer wall of the second joint (3), and an inner wall of the connecting sleeve (4) is provided with an internal thread.

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