Diesel engine gas pipe joint and leakage testing tool thereof

Abstract

The diesel engine gas pipe joint comprises an arc-shaped pipe body, two ends of the arc-shaped pipe body are respectively connected with a gas inlet and a gas outlet of the diesel engine gas pipe joint, and one side, close to the gas outlet, of the arc-shaped pipe body is provided with a sensor mounting seat and a throttle valve mounting seat; the throttle valve mounting seat is distributed between the sensor mounting seat and the air outlet of the arc-shaped pipe body, the sensor mounting seat and the throttle valve mounting seat are distributed around the axis of the air outlet of the arc-shaped pipe body in a staggered manner, and the included angle between the sensor mounting seat and the throttle valve mounting seat is an acute angle. And two groups of mounting holes matched with the inclined surface limiting part, the arc-shaped limiting part, the extension part and the second cylinder on the supporting table are used for adapting to arc-shaped pipe bodies of different models, so that the mounting and positioning problems of diesel engine gas pipe joints of different models are solved.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine parts and their testing, specifically diesel engine air pipe joints and their leak testing fixtures. Background Technology

[0002] Diesel engine air pipe fittings are irregularly shaped, and positioning these irregularly shaped products with fixtures is difficult. All products must undergo leak testing before leaving the factory to prevent leaks after installation and to detect defects during the manufacturing process. Since there are multiple models of these products, multiple sets of leak testing fixtures are needed, making the testing process cumbersome, the equipment cost high, and leading to redundant design issues. Therefore, a diesel engine air pipe fitting and its leak testing fixture were designed and developed to solve these problems. Summary of the Invention

[0003] To address the aforementioned technical problems, this utility model proposes a diesel engine air pipe connector and its leak-testing fixture. The technical problem to be solved by this utility model is achieved through the following technical solution:

[0004] A diesel engine air pipe connector includes an arc-shaped pipe body, the two ends of which are respectively connected to the air inlet and air outlet of the diesel engine air pipe connector. A sensor mounting base and a throttle valve mounting base are provided on the side of the arc-shaped pipe body near the air outlet.

[0005] The throttle body mounting base is distributed between the sensor mounting base and the air outlet of the arc-shaped tube. The sensor mounting base and the throttle body mounting base are staggered around the air outlet axis of the arc-shaped tube, and the included angle between the sensor mounting base and the throttle body mounting base is an acute angle.

[0006] The leak testing fixture includes a base, on which are provided support platforms arranged perpendicularly to each other to support both ends of the arc-shaped pipe.

[0007] The base is provided with a first sealing component for sealing both ends of the arc-shaped tube and a second sealing component for sealing the sensor mounting base and the throttle body mounting base. The base is also provided with a third sealing component for sealing the air holes on the surface of the arc-shaped tube.

[0008] The first sealing assembly includes first plugs that seal the two ends of the arc-shaped tube, and each of the first plugs is connected to a first cylinder mounted on the base.

[0009] The beneficial effects of this utility model are as follows: This utility model uses a first sealing component, a second sealing component, and a third sealing component to seal the arc-shaped pipe body. Simultaneously, a high-pressure air source is introduced through the first sealing component for leak testing, solving the product testing problem. Furthermore, the inclined limiting part, arc-shaped limiting part, extension part, and two sets of mounting holes on the support platform, which cooperate with the second cylinder, accommodate different models of arc-shaped pipe bodies, solving the installation and positioning problem of different models of diesel engine air pipe joints. This reduces redundant equipment development, improves tooling adaptability, reduces testing procedures, and increases production efficiency. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a three-dimensional structural diagram of the diesel engine air pipe connector of this utility model;

[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of the leak testing fixture of this utility model. Figure 1 ;

[0013] Figure 3 This is a top view of the leak testing fixture of this utility model;

[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the leak testing fixture of this utility model. Figure 2 ;

[0015] Figure 5 This is a schematic diagram of the three-dimensional structure of the leak testing fixture of this utility model. Figure 3 ;

[0016] Figure 6 This is a three-dimensional structural diagram of the support platform of this utility model.

[0017] The figure shows: 1. Arc-shaped tube; 2. Sensor mounting base; 3. Throttle valve mounting base; 4. Base; 5. Support platform; 6. First sealing assembly; 7. Second sealing assembly; 8. Third sealing assembly; 9. Bearing column; 10. U-shaped groove; 11. Inclined limiting part; 12. Fourth cylinder; 13. Arc-shaped limiting part; 14. Extension part; 61. First plug; 62. First cylinder; 63. Air source inlet; 64. Air source outlet; 71. Bracket; 72. Second cylinder; 73. Second plug; 74. Mounting hole; 81. Third plug; 82. Third cylinder. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described more clearly and completely below with reference to the accompanying drawings in the embodiments. Of course, the described embodiments are only a part of the present utility model and not all of them. Based on this embodiment, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of this utility model.

[0019] like Figure 1 As shown, the diesel engine air pipe connector includes an arc-shaped pipe body 1. The two ends of the arc-shaped pipe body 1 are connected to the air inlet and air outlet of the diesel engine air pipe connector, respectively. A sensor mounting seat 2 and a throttle valve mounting seat 3 are provided on the side of the arc-shaped pipe body 1 near the air outlet.

[0020] The throttle body mounting seat 3 is distributed between the sensor mounting seat 2 and the air outlet of the arc-shaped tube 1. The sensor mounting seat 2 and the throttle body mounting seat 3 are staggered around the air outlet axis of the arc-shaped tube 1, and the included angle between the sensor mounting seat 2 and the throttle body mounting seat 3 is an acute angle.

[0021] like Figures 2 to 6 As shown, the leak testing fixture includes a base 4, on which support platforms 5 are arranged perpendicularly to each other to support both ends of the arc-shaped pipe body 1.

[0022] The base 4 is provided with a first sealing component 6 for sealing both ends of the arc-shaped tube 1 and a second sealing component 7 for sealing the sensor mounting base 2 and the throttle mounting base 3. The base 4 is also provided with a third sealing component 8 for sealing the air holes on the surface of the arc-shaped tube 1. The tube opening of the arc-shaped tube 1 is sealed by the first sealing component 6, the second sealing component 7 and the third sealing component 8 to prevent leakage. Then, a high-pressure air source is introduced to conduct a leak test.

[0023] The first sealing component 6 includes a first plug 61 that seals the two ends of the arc-shaped tube 1 respectively, and the first plug 61 is connected to a first cylinder 62 installed on the base 4.

[0024] The outer circumference of the first plug 61 near the sensor mounting base 2 is provided with a gas source inlet 63, and the center of the first plug 61 is provided with a gas source outlet 64. After the first sealing component 6, the second sealing component 7 and the third sealing component 8 are sealed, the gas source inlet 63 is connected to a high-pressure gas source, and high-pressure gas is injected through the gas source outlet 64 to perform a leak test on the arc-shaped tube 1.

[0025] The second sealing assembly 7 includes a bracket 71 mounted on a base 4. The bracket 71 has two second cylinders 72 arranged in a V-shape. Each second cylinder 72 is equipped with a second plug 73. The bracket 71 has mounting holes 74 that mate with the corresponding second cylinder 72. Each second cylinder 72 has two sets of mounting holes 74 to accommodate different types of arc-shaped pipe bodies 1. Different types of diesel engine pipe connectors have different angles between the sensor mounting base 2 and the throttle body mounting base 3. Therefore, two sets of mounting holes 74 are provided to adjust the installation position of the second cylinder 72 on the bracket 71 to accommodate the positions of the sensor mounting base 2 and the throttle body mounting base 3 of different types of diesel engine pipe connectors. Simultaneously, because there is an angle between the sensor mounting base 2 and the throttle body mounting base 3, the second cylinders 72 are arranged in a V-shape to ensure that the axis of the second plug 73 coincides with the sensor mounting base 2 and the throttle body mounting base 3, thus fully sealing the sensor mounting base 2 and the throttle body mounting base 3. Figure 2 and Figure 5 As shown, the second cylinder 72 mates with different mounting holes 74 to seal the sensor mounting seat 2 and throttle valve mounting seat 3 of different models of diesel engine air pipe joints.

[0026] The third sealing component 8 includes a third plug 81 distributed between the two first sealing components 6, and the third plug 81 is fitted with a third cylinder 82 mounted on the base 4.

[0027] The support platforms 5 are provided with bearing columns 9 that cooperate with the arc-shaped tube 1; the arc-shaped tube 1 is supported by the support platforms 5 and the bearing columns 9, and the included angle between the support platforms 5 can also be adjusted according to different models of diesel engine air pipe joints to adapt to arc-shaped tubes 1 of different lengths or curvatures.

[0028] The support platform 5 is provided with a U-shaped groove 10 that is adapted to the arc-shaped tube 1. The bottom of the U-shaped groove 10 is provided with a sloping limiting part 11 that abuts against the outer wall of the arc-shaped tube 1. Both sides of the U-shaped groove 10 are provided with arc-shaped limiting parts 13 that are adapted to the arc-shaped tube 1.

[0029] The inclined limiting part 11 is used to limit the bottom surface of the lower half of the arc-shaped tube body 1; such as Figure 6 As shown, the inclined limiting parts 11 on the two support platforms 5 are of different sizes to adapt to different positions of the arc-shaped tube 1. The arc-shaped limiting part 13 is used to limit the lower half of the side of the arc-shaped tube 1. The support platform 5 is provided with an extension part 14 on the side away from the fourth cylinder 12. The extension part 14 is higher than the radius of the arc-shaped tube 1. Due to the extension part 14, the height of the support platform 5 on the side away from the fourth cylinder 12 is greater than that on the side of the support platform 5 close to the fourth cylinder 12.

[0030] The base 4 is equipped with a fourth cylinder 12 for marking the surface of the arc-shaped tube 1. After the leak test is completed, the qualified products are stamped and marked by the fourth cylinder 12.

[0031] In this utility model, when the diesel engine air pipe connector needs to be tested: First step: Place the arc-shaped pipe 1 on the support platform 5 and the bearing column 9, so that the outer wall of the support platform 5 engages with the inclined limiting part 11, the arc-shaped limiting part 13 and the extension part 14.

[0032] Step 2: The first sealing component 6, the second sealing component 7, and the third sealing component 8 seal each pipe opening;

[0033] Step 3: Connect the high-pressure gas source to the gas source inlet 63 and inject high-pressure gas from the gas source outlet 64 to perform a leak test on the arc-shaped pipe 1.

[0034] Step 4: After the leak test is completed, qualified products are stamped and marked by the fourth cylinder 12, and the first sealing component 6, the second sealing component 7 and the third sealing component 8 are reset. Unqualified products are removed for testing.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A diesel engine air pipe connector, characterized in that: It includes an arc-shaped tube (1), the two ends of which are connected to the air inlet and air outlet of the diesel engine air pipe connector, respectively. The arc-shaped tube (1) is provided with a sensor mounting seat (2) and a throttle valve mounting seat (3) on the side near the air outlet. The throttle mount (3) is distributed between the sensor mount (2) and the air outlet of the arc-shaped tube (1). The sensor mount (2) and the throttle mount (3) are staggered around the air outlet axis of the arc-shaped tube (1). The included angle between the sensor mount (2) and the throttle mount (3) is an acute angle.

2. A leak-testing fixture for the diesel engine air pipe joint as described in claim 1, characterized in that: The leak testing fixture includes a base (4), on which support platforms (5) are arranged perpendicularly to each other to support the two ends of the arc-shaped pipe (1); The base (4) is provided with a first sealing component (6) for sealing both ends of the arc-shaped tube (1) and a second sealing component (7) for sealing the sensor mounting seat (2) and the throttle mounting seat (3). The base (4) is also provided with a third sealing component (8) for sealing the air holes on the surface of the arc-shaped tube (1).

3. The leak testing fixture according to claim 2, characterized in that: The first sealing assembly (6) includes a first plug (61) that seals the two ends of the arc-shaped tube (1), and the first plug (61) is connected to a first cylinder (62) installed on the base (4).

4. The leak testing fixture according to claim 3, characterized in that: An air source inlet (63) is provided on the outer circle of the first plug (61) near the sensor mounting base (2), and an air source outlet (64) is provided at the center of the first plug (61).

5. The leak testing fixture according to claim 2, characterized in that: The second sealing assembly (7) includes a bracket (71) mounted on a base (4). The bracket (71) is provided with two second cylinders (72) arranged in a V-shape. Each second cylinder (72) is equipped with a second plug (73). The bracket (71) is provided with mounting holes (74) that mate with the corresponding second cylinders (72). Each second cylinder (72) is equipped with two sets of mounting holes (74) to accommodate different types of arc-shaped tubes (1).

6. The leak testing fixture according to claim 2, characterized in that: The third sealing assembly (8) includes a third plug (81) distributed between the two first sealing assemblies (6), and the third plug (81) is fitted with a third cylinder (82) mounted on the base (4).

7. The leak testing fixture according to claim 2, characterized in that: The support platform (5) is provided with a bearing column (9) that cooperates with the arc-shaped tube (1).

8. The leak testing fixture according to claim 2, characterized in that: The support platform (5) is provided with a U-shaped groove (10) adapted to the arc-shaped tube (1). The bottom of the U-shaped groove (10) is provided with a sloping limiting part (11) that abuts against the outer wall of the arc-shaped tube (1). Both sides of the U-shaped groove (10) are provided with arc-shaped limiting parts (13) adapted to the arc-shaped tube (1).

9. The leak testing fixture according to claim 2, characterized in that: The base (4) is equipped with a fourth cylinder (12) for marking the surface of the arc-shaped tube (1).

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