Turbine housing air tightness gauge

Abstract

The utility model discloses turbine casing airtightness testing fixture relates to airtightness testing fixture technical field, including bottom plate, the back of bottom plate fixedly connected with vertical board, the middle part fixedly connected with positioning rubber board at bottom plate top, the top of positioning rubber board is provided with turbine casing, the top of positioning rubber board is equipped with first plugging plate, one side of positioning rubber board is equipped with second plugging plate, the bottom of first plugging plate and the front of second plugging plate all are fixedly connected with intermediate column, the utility model discloses turbine casing airtightness testing fixture, by setting first plugging plate, second plugging plate and the intermediate column and annular sealing air bag of center, can be with the help plugging plate and adhere turbine casing outer wall, and intermediate column inserts into hole, and the sealing air bag of inflation adheres hole mouth expansion, along with the volume more and more big, then adhere more and more close, finally will hole mouth thoroughly seal, and the sealing air bag is flexible material, and the volume and shape can follow the shape and size of hole mouth corresponding adhere change.

Description

Technical Field

[0001] This utility model relates to the field of airtightness inspection tools, and in particular to an airtightness inspection tool for turbine housings. Background Technology

[0002] As the core pressure-bearing component of a turbocharger (which must withstand the impact of high-temperature and high-pressure combustion gases during operation), the airtightness of the turbine housing directly determines the turbocharger's performance, safety, and service life. Even a small leak can lead to combustion gas leakage, reduced intake efficiency, and even turbine overheating and engine power reduction. Therefore, airtightness testing is a critical quality control process in the production and maintenance of turbine housings.

[0003] Currently, there are various methods for testing the airtightness of turbine housings, but all of them require blocking the openings of the turbine housing during testing. Existing inspection tools only use plate-shaped sealing plates to block the openings. Since the opening shapes of different turbine housings are different, and some have depressions or irregular curvatures, using planar structures for sealing makes it difficult to achieve a sufficient sealing effect. In addition, when using water pressure airtightness testing, water is transparent and does not have a high contrast with the color of some housings, making it difficult to observe, especially when there is a small amount of leakage. Utility Model Content

[0004] The purpose of this invention is to provide a turbine housing airtightness tester to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a turbine housing airtightness tester, comprising a base plate, a vertical plate fixedly connected to the back of the base plate, a positioning rubber plate fixedly connected to the middle of the top of the base plate, a turbine housing disposed at the top of the positioning rubber plate, a first sealing plate disposed at the top of the positioning rubber plate, a second sealing plate disposed on one side of the positioning rubber plate, intermediate columns fixedly connected to the bottom of the first sealing plate and the front of the second sealing plate, sealing airbags fixedly connected to the side walls of the two intermediate columns, a miniature air pump installed on one side of the top of the first sealing plate and one side of the back of the second sealing plate, and a connecting column fixedly connected to the top of the first sealing plate;

[0006] A water inlet pipe is installed at the top of the upright plate. Multiple rotating shafts are rotatably connected to the inner wall of the water inlet pipe. Multiple ink blocks are installed on the side wall of one of the rotating shafts, and multiple stirring plates are fixedly connected to the outer walls of the other two rotating shafts.

[0007] As a preferred technical solution of this utility model, the outlet of the micro air pump is equipped with a soft conduit, and one end of the soft conduit is fixedly connected to the side wall of the sealing airbag.

[0008] The above technical solution allows the flexible tube to be bent or deformed, making it easy to pull out of the outlet of the micro air pump when the airbag is depressurized.

[0009] As a preferred embodiment of this utility model, cylinders are installed on the top and back of the upright plate, with the output end of one cylinder fixedly connected to the top of the connecting column and the output end of the other cylinder fixedly connected to the back of the second sealing plate.

[0010] Through the above technical solution, the cylinder drives the first and second sealing plates, and presses them against the outside of the turbine housing with a certain pressure to achieve initial sealing.

[0011] As a preferred embodiment of this utility model, one end of the water inlet pipe is fixedly connected to an inlet pipe, and the other end of the water inlet pipe is fixedly connected to a bend pipe, with the middle part of the bend pipe fixedly penetrating the top of the upright plate.

[0012] With the above technical solution, an external water source and control valve are connected to the inlet pipe. Water can be introduced into the inlet pipe by opening the external valve. After the water is filled and the water pressure is increased, the external valve is closed.

[0013] As a preferred embodiment of this utility model, a telescopic pipe is fixedly connected to the bottom end of the bent pipe, and a rigid conduit is fixedly connected to the bottom end of the telescopic pipe. A through connecting column and a first sealing plate are fixedly fixed in sequence in the middle of the rigid conduit.

[0014] Through the above technical solution, the telescopic pipe can retract or extend to adapt to the lifting and lowering of the first sealing plate, and the rigid conduit guides water from the bottom of the first sealing plate into the turbine housing.

[0015] As a preferred technical solution of this utility model, a rectangular plate is provided on one side of the positioning rubber plate, a rectangular sponge is fixedly connected to the front of the rectangular plate, and absorbent paper is provided on the front side of the rectangular sponge.

[0016] Through the above technical solution, the positioning rubber plate is elastic and can work with the upper pressing to generate pressure and seal the connection between it and the turbine housing. At the same time, the anti-slip function can enhance the positioning of the turbine housing, and the rectangular sponge can be bent and deformed to adapt to the shape curve of the turbine housing.

[0017] As a preferred embodiment of this utility model, adhesive pieces are fixedly connected to the four corners of the front side of the rectangular sponge, and the absorbent paper is bonded to multiple adhesive pieces.

[0018] The above technical solution allows the adhesive patch to easily fix or remove absorbent paper.

[0019] As a preferred embodiment of this utility model, a connecting rope is fixedly connected to the back of the rectangular plate, and a fixing block is fixedly connected to one end of the connecting rope. The fixing block is fixedly connected to the side wall of the upright plate.

[0020] The above technical solution prevents the rectangular plate from being lost by connecting ropes, and at the same time, it is installed on the upright plate with the help of fixing blocks.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This utility model, by setting a first sealing plate, a second sealing plate, a central column, and an annular sealing airbag, allows the sealing plates to adhere to the outer wall of the turbine housing, the central column to be inserted into the hole, and the expanding sealing airbag to adhere to the hole opening and expand. As the volume increases, the fit becomes tighter and tighter, eventually completely sealing the hole opening. The sealing airbag is made of flexible material, and its volume and shape can adapt to the shape and size of the hole opening, so that holes of any shape and size can be quickly sealed, ensuring the accuracy of airtightness testing.

[0023] 2. This utility model uses multiple rotating shafts on the inner wall of the water inlet pipe, multiple ink blocks on the side wall of one shaft, and stirring plates on the other two shafts. When using the water pressure detection method, the injected clean water is automatically mixed into a colored liquid. The color can be selected to have a high contrast with the color of the outer wall of the turbine housing, so that the seepage water is easier to observe accurately, improving detection efficiency and accuracy. The rectangular plate, rectangular sponge, and absorbent paper can also be provided. The rectangular sponge can fully adhere to the side wall for wiping. The sponge can fully adhere to the irregularly shaped side wall of the turbine housing, and the absorbent paper can fully absorb the small amount of leakage and undergo a dyeing reaction, which can intuitively determine whether there is a leak. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the miniature air pump of this utility model;

[0026] Figure 3 This is a schematic diagram of the connecting column of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the sealing airbag of this utility model;

[0028] Figure 5 This is a schematic diagram of the water inlet pipe of this utility model.

[0029] In the diagram: 1. Base plate; 2. Vertical plate; 3. Positioning rubber plate; 4. Turbine housing; 5. Cylinder; 6. First sealing plate; 7. Miniature air pump; 8. Bend; 9. Water inlet pipe; 10. Second sealing plate; 11. Connecting rope; 12. Rectangular plate; 13. Rectangular sponge; 14. Absorbent paper; 15. Connecting column; 16. Rigid conduit; 17. Telescopic tube; 18. Intermediate column; 19. Sealing airbag; 20. Inlet pipe; 21. Rotating shaft; 22. Stirring plate; 23. Ink block. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1-5 This utility model provides a technical solution for a turbine housing airtightness inspection tool:

[0032] Example 1:

[0033] according to Figure 1 , Figure 2 and Figure 3 , Figure 4 As shown, the turbine housing airtightness tester includes a base plate 1, a vertical plate 2 fixedly connected to the back of the base plate 1, a positioning rubber plate 3 fixedly connected to the middle of the top of the base plate 1, a turbine housing 4 set at the top of the positioning rubber plate 3, a first sealing plate 6 set at the top of the positioning rubber plate 3, a second sealing plate 10 set on one side of the positioning rubber plate 3, intermediate columns 18 fixedly connected to the bottom of the first sealing plate 6 and the front of the second sealing plate 10, sealing airbags 19 fixedly connected to the side walls of the two intermediate columns 18, a miniature air pump 7 installed on one side of the top of the first sealing plate 6 and one side of the back of the second sealing plate 10, and a connecting column 15 fixedly connected to the top of the first sealing plate 6.

[0034] The outlet of the miniature air pump 7 is equipped with a flexible conduit. One end of the flexible conduit is fixedly connected to the side wall of the sealing airbag 19. Cylinders 5 are installed on the top and back of the upright plate 2. The cylinders 5 drive the first sealing plate 6 and the second sealing plate 10, and press and adhere to the outside of the turbine housing 4 with a certain pressure to achieve a preliminary seal. The output end of one cylinder 5 is fixedly connected to the top of the connecting column 15, and the output end of the other cylinder 5 is fixedly connected to the back of the second sealing plate 10.

[0035] In practical use, the turbine housing airtightness tester of this utility model allows the operator to place the turbine housing 4 on the positioning rubber plate 3 and drive the two cylinders 5 to gradually move the first sealing plate 6 and the second sealing plate 10 closer to the holes on the upper surface and side of the turbine housing 4. The first sealing plate 6 and the second sealing plate 10 are pressed against the side wall of the turbine housing 4, and the central post 18 on its surface is inserted into the hole. At this time, the two micro air pumps 7 are turned on, and the two micro air pumps 7 inject air into the two sealing airbags 19 through two soft tubes, causing them to inflate. With the intermediate column 18 inserted into the hole, the expanding sealing airbag 19 will expand to fit the hole opening. As the volume increases, the fit becomes tighter and tighter, eventually completely sealing the hole opening. In this way, the two sealing plates, together with the intermediate column 18 and the annular sealing airbag 19, completely seal the hole on the upper surface of the turbine housing 4, allowing for the subsequent pressure test. When the test is completed and the two sealing airbags 19 need to be depressurized, the end of the soft tube connected to the outlet of the micro air pump 7 is manually disconnected, allowing the internal gas to be released and the volume to shrink, ready for the next expansion and compression operation.

[0036] Example 2:

[0037] Based on Example 1, such as Figure 1 and Figure 5 As shown, a water inlet pipe 9 is installed at the top of the vertical plate 2. Multiple rotating shafts 21 are rotatably connected to the inner wall of the water inlet pipe 9. Multiple ink blocks 23 are installed on the side wall of one of the rotating shafts 21. These are water-soluble dye blocks (high color rendering, no sedimentation). Upon contact with water, they partially dissolve and mix with the water due to the impact of the water flow. Multiple stirring plates 22 are fixedly connected to the outer walls of the other two rotating shafts 21. An inlet pipe 20 is fixedly connected to one end of the water inlet pipe 9. The inlet pipe 20 is connected to a water source and a control valve. Opening the external valve of the inlet pipe 20 allows water to be introduced into the inlet pipe, slowly increasing the pressure to the specified level. Then, the external valve is closed, and the pressure is maintained for 5-10 minutes. Note that this inspection tool uses water pressure testing and is suitable for thick-walled, large... The initial inspection of the volume turbine housing 4 casting is used to find obvious leakage locations during the initial inspection. Water injection is safer (water is incompressible and has a low risk of explosion) and can more intuitively identify leakage locations than gas. The other end of the water inlet pipe 9 is fixedly connected to a bend pipe 8. The middle of the bend pipe 8 is fixedly connected to the top of the vertical plate 2. The bottom end of the bend pipe 8 is fixedly connected to a telescopic pipe 17. The bottom end of the telescopic pipe 17 is fixedly connected to a rigid conduit 16. The middle of the rigid conduit 16 is sequentially fixedly connected to a connecting column 15 and a first sealing plate 6. A rectangular plate 12 is provided on one side of the positioning rubber plate 3. A rectangular sponge 13 is fixedly connected to the front of the rectangular plate 12. A water-absorbing paper 14 is provided on the front side of the rectangular sponge 13.

[0038] The four corners of the front of the rectangular sponge 13 are fixedly connected with adhesive pieces. The absorbent paper 14 is bonded to multiple adhesive pieces. The back of the rectangular plate 12 is fixedly connected with a connecting rope 11. One end of the connecting rope 11 is fixedly connected with a fixing block, which is fixedly connected to the side wall of the upright plate 2.

[0039] In practical use, this utility model turbine housing airtightness tester, when the turbine housing 4 is pressed onto the positioning rubber plate 3 by the first sealing plate 6, and the holes on its upper surface and sides are sealed by the two sealing plates respectively, can connect to an external water source through the inlet pipe 20. Water enters the water inlet pipe 9, and the water flow impact will drive multiple ink blocks 23 to rotate. The ink blocks 23 are dried and hardened pigments, which partially dissolve after encountering the water flow impact, causing the water to change color. Then, the water flows and impacts the two rotating shafts 21 behind, and with the help of the rotating stirring plate 22, the pigment and water are further mixed, turning the clear water into a colored liquid. At this time, it is then injected into the turbine housing 4 through the bend pipe 8, the telescopic pipe 17, and the rigid conduit 16, filling the turbine housing 4. Water is injected and pressurized. This allows us to observe whether there is any leakage on the outer wall of the turbine housing 4 to determine the airtightness. Since the injected water is colored, a high-contrast color ink block 23 can be selected based on the current color of the turbine housing 4 being tested. This way, the seeping water can be observed directly with the naked eye. When observing a small amount of leakage, a new absorbent paper 14 can be taken and pasted onto the front of the rectangular sponge 13 using multiple adhesive strips. The operator takes the rectangular plate 12 and uses the rectangular sponge 13 to fully adhere to the outer wall of the turbine housing 4 to wipe it. When there is a small local leakage, the leaking liquid will be absorbed by the absorbent paper 14. By observing whether the absorbent paper 14 is stained, the airtightness of the turbine housing 4 can be determined.

[0040] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.

Claims

1. A turbine housing airtightness inspection fixture, including a base plate (1), characterized in that: A vertical plate (2) is fixedly connected to the back of the base plate (1). A positioning rubber plate (3) is fixedly connected to the middle of the top of the base plate (1). A turbine housing (4) is provided at the top of the positioning rubber plate (3). A first sealing plate (6) is provided at the top of the positioning rubber plate (3). A second sealing plate (10) is provided on one side of the positioning rubber plate (3). An intermediate column (18) is fixedly connected to the bottom of the first sealing plate (6) and the front of the second sealing plate (10). A sealing airbag (19) is fixedly connected to the side wall of the two intermediate columns (18). A micro air pump (7) is installed on one side of the top of the first sealing plate (6) and one side of the back of the second sealing plate (10). A connecting column (15) is fixedly connected to the top of the first sealing plate (6). The top of the upright plate (2) is equipped with a water inlet pipe (9), and the inner wall of the water inlet pipe (9) is rotatably connected with multiple rotating shafts (21). Multiple ink blocks (23) are installed on the side wall of one of the rotating shafts (21), and multiple stirring plates (22) are fixedly connected to the outer walls of the other two rotating shafts (21).

2. The turbine housing airtightness tester according to claim 1, characterized in that: The outlet of the micro air pump (7) is equipped with a soft conduit, and one end of the soft conduit is fixedly connected to the side wall of the sealing airbag (19).

3. The turbine housing airtightness tester according to claim 1, characterized in that: Cylinders (5) are installed on the top and back of the upright plate (2). The output end of one of the cylinders (5) is fixedly connected to the top of the connecting column (15), and the output end of the other cylinder (5) is fixedly connected to the back of the second sealing plate (10).

4. The turbine housing airtightness tester according to claim 1, characterized in that: One end of the water inlet pipe (9) is fixedly connected to the inlet pipe (20), and the other end of the water inlet pipe (9) is fixedly connected to the bend pipe (8). The middle part of the bend pipe (8) is fixedly connected to the top of the vertical plate (2).

5. The turbine housing airtightness tester according to claim 4, characterized in that: The bottom end of the bend (8) is fixedly connected to a telescopic pipe (17), and the bottom end of the telescopic pipe (17) is fixedly connected to a rigid conduit (16). The middle part of the rigid conduit (16) is sequentially fixed to a through connecting column (15) and a first sealing plate (6).

6. The turbine housing airtightness tester according to claim 1, characterized in that: A rectangular plate (12) is provided on one side of the positioning rubber plate (3), and a rectangular sponge (13) is fixedly connected to the front of the rectangular plate (12). Absorbent paper (14) is provided on the front side of the rectangular sponge (13).

7. The turbine housing airtightness tester according to claim 6, characterized in that: The rectangular sponge (13) has adhesive pieces fixedly connected to the four corners of its front side, and the absorbent paper (14) is bonded to multiple adhesive pieces.

8. The turbine housing airtightness tester according to claim 7, characterized in that: A connecting rope (11) is fixedly connected to the back of the rectangular plate (12), and a fixing block is fixedly connected to one end of the connecting rope (11). The fixing block is fixedly connected to the side wall of the upright plate (2).

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