Detection device for testing impeller blade cracks

Abstract

The utility model discloses a detection device for testing impeller blade cracks, which comprises a shell, a protective door is hinged to the front side surface of the shell through a hinge, a faucet is arranged at the lower end of the rear side wall of the shell, and the detection device further comprises a self-cleaning detection mechanism; the self-cleaning detection mechanism comprises a protection bin, a detection liquid bin, rotating shafts, cover plates, an annular cleaning pipe and nozzles, the protection bin is arranged on the bottom wall of the shell, the detection liquid bin is slidably connected to the interior of the protection bin, the rotating shafts are rotatably connected to the left side and the right side between the front inner wall and the rear inner wall of the shell, and the cover plates are arranged on the outer arc surfaces of the rotating shafts; the two cover plates are symmetrically arranged, and the annular cleaning pipe is fixedly connected to the middle of the interior of the shell, according to the detection device for testing the impeller blade cracks, after the impeller blade cracks are detected, the impeller is rapidly and more comprehensively cleaned, the effect of cleaning the detection liquid on the surface of the impeller is improved, and therefore the working efficiency of impeller blade crack detection is improved.

Description

Technical Field

[0001] This utility model relates to the field of impeller manufacturing technology, specifically to a device for testing and detecting cracks in impeller blades. Background Technology

[0002] An impeller is a rotating mechanical component that transfers energy to a fluid. It is widely used in aerospace, energy, chemical, and mechanical fields. The blades are the core of the impeller, and their shape, number, angle, and size directly affect the impeller's performance. Blades usually have specific curved surface shapes to effectively push or compress the fluid. Different types of impellers have different blade shapes and structures. For example, the blades of axial flow impellers are usually slender and propeller-shaped, while the blades of centrifugal impellers are relatively short and have a greater degree of curvature.

[0003] Before the impeller is put into use, it is usually checked whether there are cracks in the impeller blades. Among the detection methods, liquid penetration testing has a good detection effect and is commonly used because the equipment is relatively simple, easy to operate, and low in cost. However, after liquid penetration testing, there is often a large amount of test liquid residue on the surface of the impeller. At this time, workers need to manually clean the impeller after judging the presence of cracks in the impeller blades.

[0004] There are some problems. In the above method, the impeller needs to be manually cleaned after liquid penetration testing. Manual cleaning is not only inefficient, but also increases the impeller testing steps, thereby reducing the working efficiency of impeller blade crack detection. To address this, we propose a device for testing impeller blade cracks. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a device for testing impeller blade cracks. After the impeller blade crack detection is completed, the impeller is cleaned quickly and more thoroughly, which increases the effectiveness of cleaning the detection liquid on the impeller surface, thereby improving the working efficiency of impeller blade crack detection and effectively solving the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for detecting cracks in impeller blades, comprising a housing, a protective door hinged to the front side of the housing, a faucet provided at the lower end of the rear side wall of the housing, and a self-cleaning detection mechanism;

[0007] The self-cleaning inspection mechanism includes a protective chamber, an inspection liquid chamber, a rotating shaft, a cover plate, an annular cleaning tube, and nozzles. The protective chamber is located on the bottom wall of the outer shell, and the inspection liquid chamber is slidably connected inside the protective chamber. Rotating shafts are rotatably connected to both sides between the front and rear inner walls of the outer shell, and cover plates are provided on the outer arc surface of each rotating shaft. The two cover plates are symmetrically arranged. The annular cleaning tube is fixedly connected to the middle of the inner shell, and nozzles are evenly distributed on the inner arc surface of the annular cleaning tube. After the impeller blade crack inspection is completed, the impeller is quickly and more thoroughly cleaned, increasing the effectiveness of cleaning the inspection liquid on the impeller surface, thereby improving the work efficiency of impeller blade crack inspection.

[0008] Furthermore, a control switch assembly is provided on the front side of the housing, and the input end of the control switch assembly is electrically connected to an external power supply for stable control.

[0009] Furthermore, the self-cleaning detection mechanism also includes an electric cylinder, which is installed on the bottom wall of the protective chamber. The telescopic end of the electric cylinder is fixedly connected to the lower side of the detection liquid chamber, and the input end of the electric cylinder is electrically connected to the output end of the control switch group for stable driving.

[0010] Furthermore, the self-cleaning detection mechanism also includes an adjustment frame and a lever frame. The lever frames are respectively located on the upper left and right sides of the detection liquid tank. The lower side of the cover plate is provided with an adjustment frame. The middle part of the adjustment frame is located inside the adjacent lever frame on the lower side, which facilitates opening and closing the cover plate.

[0011] Furthermore, the upper part of the inner shell is provided with an installation plate, the upper side of the installation plate is provided with a water tank, the upper end of the water tank is provided with a water supply pipe, the upper end of the water supply pipe penetrates the upper side wall of the shell and is exposed outside the shell, so as to facilitate water supply to the water tank.

[0012] Furthermore, a water pump is installed on the upper side of the mounting plate. The input end of the water pump is electrically connected to the output end of the control switch group. The water pump and the water tank are connected in series through a connecting water pipe. The water pump is connected to a ring-shaped cleaning pipe through a cleaning pipe. The middle of the cleaning pipe passes through the mounting plate for easy cleaning.

[0013] Furthermore, a placement tray is mounted on the lower side of the mounting plate via a mounting bracket. The placement tray is located inside the annular cleaning tube. An electric telescopic rod is mounted on the upper side of the mounting plate. The input end of the electric telescopic rod is electrically connected to the output end of the control switch group. The telescopic end of the electric telescopic rod passes through the middle of the mounting plate. A rubber pressure head is provided at the telescopic end of the electric telescopic rod to facilitate the placement of the impeller.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This device for detecting cracks in test impeller blades has the following advantages:

[0015] After the impeller blade crack detection is completed, when the impeller is cleaned, the wastewater generated during the cleaning process is isolated by the cooperation of the adjustment frame, the deflector, and the cover plate to avoid contamination of the test liquid and subsequent reduction in testing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the front side cross-section of the present invention;

[0018] Figure 3 This is a structural schematic diagram of the left side cross-section of this utility model.

[0019] In the diagram: 1. Outer shell, 2. Self-cleaning detection mechanism, 21. Protective chamber, 22. Detection liquid chamber, 23. Rotating shaft, 24. Cover plate, 25. Adjustment frame, 26. Paddle bracket, 27. Electric cylinder, 28. Circular cleaning pipe, 29. Nozzle, 3. Mounting plate, 4. Water pump, 5. Cleaning pipe, 6. Water tank, 7. Water supply pipe, 8. Electric telescopic rod, 9. Rubber pressure head, 10. Placement tray, 11. Connecting water pipe, 12. Control switch group, 13. Faucet, 14. Protective door. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-3 This embodiment provides a technical solution: a device for testing impeller blade cracks, including a housing 1, a control switch group 12 is provided on the front side of the housing 1, the input end of the control switch group 12 is electrically connected to an external power source, a protective door 14 is hinged to the front side of the housing 1, a faucet 13 is provided at the lower end of the rear side wall of the housing 1, and a self-cleaning detection mechanism 2 is also included.

[0022] The self-cleaning detection mechanism 2 includes a protective chamber 21, a detection liquid chamber 22, a rotating shaft 23, a cover plate 24, an annular cleaning tube 28, and nozzles 29. The protective chamber 21 is located on the bottom wall of the outer shell 1. The detection liquid chamber 22 is slidably connected inside the protective chamber 21. The rotating shaft 23 is rotatably connected to both sides of the inner walls of the outer shell 1. The outer arc surface of the rotating shaft 23 is provided with a cover plate 24, and the two cover plates 24 are symmetrically arranged. The annular cleaning tube 28 is fixedly connected to the middle of the inner shell 1. The inner arc surface of the annular cleaning tube 28 is provided with evenly distributed nozzles 29. The self-cleaning detection mechanism 2 also includes an electric cylinder 27, which is installed on the bottom wall of the protective chamber 21. The telescopic end of the electric cylinder 27 is fixedly connected to the lower side of the detection liquid chamber 22, and the input end of the electric cylinder 27 is electrically connected to... The self-cleaning detection mechanism 2, connected to the output of the control switch group 12, also includes an adjusting frame 25 and a lever 26. The levers 26 are respectively located on the upper left and right sides of the detection liquid tank 22. The lower side of the cover plate 24 is provided with adjusting frames 25, and the middle of the adjusting frames 25 is located inside the adjacent levers 26 on the lower side. The upper part of the inner shell 1 is provided with a mounting plate 3. The upper side of the mounting plate 3 is provided with a water tank 6. The upper end of the water tank 6 is provided with a water supply pipe 7. The upper end of the water supply pipe 7 penetrates the upper side wall of the shell 1 and is exposed outside the shell 1. The upper side of the mounting plate 3 is provided with a water pump 4. The input end of the water pump 4 is electrically connected to the output of the control switch group 12. The water pump 4 and the water tank 6 are connected in series through a connecting water pipe 11. The water pump 4 is connected to the annular cleaning pipe 28 through a cleaning pipe 5. The middle part of the mounting plate 3 is through the mounting plate 3. The lower side of the mounting plate 3 is equipped with a placement tray 10 via a mounting bracket. The placement tray 10 is located inside the annular cleaning tube 28. An electric telescopic rod 8 is installed on the upper side of the mounting plate 3. The input end of the electric telescopic rod 8 is electrically connected to the output end of the control switch group 12. The telescopic end of the electric telescopic rod 8 passes through the middle of the mounting plate 3. A rubber pressure head 9 is provided at the telescopic end of the electric telescopic rod 8. First, the worker opens the protective door 14 and places the impeller to be tested on the placement tray 10. Then, the worker operates the control switch group 12 to make the electric telescopic rod 8 rotate. The telescopic end of the electric telescopic rod 8 drives the rubber pressure head 9 to move downward until it contacts the surface of the impeller, thereby maintaining the stability of the impeller during the testing process. At this time, the worker operates the control switch... Group 12 operates the electric cylinder 27, whose telescopic end pushes the detection liquid chamber 22 upward. The detection liquid chamber 22 slides inside the protective chamber 21. During the upward movement of the detection liquid chamber 22, the levers 26 at both ends of the detection liquid chamber 22 lift the adjusting frame 25 upward. At this time, the adjusting frame 25 drives the inner end of the adjacent cover plate 24 upward. During this process, the cover plate 24 rotates outward synchronously around the adjacent rotating shaft 23, thereby releasing the outlet of the protective chamber 21 that it was blocking. The adjusting frame 25 slides and rotates inside the adjacent levers 26. Subsequently, the detection liquid chamber 22 moves upward until the impeller enters the detection liquid chamber 22 and is immersed in the penetrating liquid containing colored dye. After a period of time, the penetrating liquid containing colored dye seeps into any defects such as cracks that may exist in the impeller blades.Next, the worker operates the electric cylinder 27 by controlling the control switch assembly 12. The telescopic end of the electric cylinder 27 pulls down the detection liquid tank 22, which slides inside the protective chamber 21. During the downward movement of the detection liquid tank 22, the levers 26 at both ends of the detection liquid tank 22 pull down the adjusting bracket 25. At this time, the adjusting bracket 25 drives the inner end of the adjacent cover plate 24 downward. During this process, the cover plate 24 rotates synchronously inward around the adjacent rotating shaft 23. After a period of time, it blocks the upper end of the protective chamber 21. During this process, the adjusting bracket 25 slides and rotates inside the adjacent lever 26. At this time, the worker judges the crack condition of the impeller blade by observing the staining on the impeller blade. Then, the impeller is cleaned. The worker operates the water pump 4 by controlling the control switch assembly 12. The water pump 4 draws water from the water tank 6 through the connecting water pipe 11, then delivers it to the annular cleaning pipe 28 via the cleaning pipe 5. The water is then pressurized and sprayed out through evenly distributed nozzles 29. The sprayed water acts on the surface of the impeller, thus cleaning it. Workers can replenish water to the water tank 6 through the water supply pipe 7. Wastewater generated during the cleaning process falls inside the outer casing 1. The protective chamber 21 and cover plate 24 isolate this wastewater, preventing contamination of the detection liquid inside the detection liquid chamber 22. After a period of time, workers open the water tap 13 to drain the water. After inspecting the impeller blades, the impeller is cleaned. The protective chamber 21 and cover plate 24 effectively isolate the wastewater generated during the cleaning process, preventing contamination of the detection liquid and reducing subsequent testing efficiency.

[0023] The working principle of the impeller blade crack detection device provided by this utility model is as follows: First, the worker opens the protective door 14 and places the impeller to be tested on the placement tray 10. Then, the worker operates the control switch group 12 to make the electric telescopic rod 8 rotate. The telescopic end of the electric telescopic rod 8 drives the rubber pressure head 9 to move downward until it contacts the surface of the impeller, thereby maintaining the stability of the impeller during the testing process. At this time, the worker operates the control switch group 12 to make the electric cylinder 27 rotate. The telescopic end of the electric cylinder 27 pushes the detection liquid tank 22 upward. The detection liquid tank 22 slides inside the protective tank 21. During the upward movement of the detection liquid tank 22... In the process, the levers 26 at both ends of the detection liquid tank 22 lift the adjusting frame 25 upwards. At this time, the adjusting frame 25 drives the inner end of the adjacent cover plate 24 upwards. During this process, the cover plate 24 rotates outwards synchronously around the adjacent rotating shaft 23, thereby releasing the outlet of the protective tank 21 that it was blocking. The adjusting frame 25 slides and rotates inside the adjacent levers 26. Then, the detection liquid tank 22 moves upwards to the impeller and enters the detection liquid tank 22 and is immersed in the penetrating liquid containing colored dye. After a period of time, the penetrating liquid containing colored dye seeps into the impeller blades and may have cracks or other defects. Then, the worker operates the control switch group 12 to activate the electric cylinder 2. 7. During operation, the telescopic end of the electric cylinder 27 pulls down the detection liquid chamber 22. The detection liquid chamber 22 slides inside the protective chamber 21. As the detection liquid chamber 22 moves downward, the levers 26 at both ends of the detection liquid chamber 22 pull down the adjusting bracket 25. At this time, the adjusting bracket 25 drives the inner end of the adjacent cover plate 24 downward. During this process, the cover plate 24 rotates synchronously inward around the adjacent rotating shaft 23. After a period of time, it blocks the upper end of the protective chamber 21. During this process, the adjusting bracket 25 both slides and rotates inside the adjacent lever 26. At this time, the worker judges the crack condition of the impeller blade by observing the staining on the impeller blade, and then... The impeller is cleaned by the worker operating the control switch group 12 to start the water pump 4. The water pump 4 draws water from the water tank 6 through the connecting water pipe 11, and then delivers it to the annular cleaning pipe 28 through the cleaning pipe 5. The water is then pressurized and sprayed out through the evenly distributed nozzles 29. The sprayed water acts on the surface of the impeller, thereby achieving the effect of cleaning the impeller. The worker can replenish water to the water tank 6 through the water replenishment pipe 7. The wastewater generated during the cleaning process will fall into the inside of the outer casing 1. At this time, the protective chamber 21 and the cover plate 24 will separate the wastewater to prevent the detection liquid inside the detection liquid chamber 22 from being contaminated. After a period of time, the worker opens the faucet 13 to drain the water.

[0024] It is worth noting that the water pump 4 disclosed in the above embodiments can be model ISG65-100, the electric telescopic rod 8 and the electric cylinder 27 can be model SEC-28-L, and the control switch group 12 is provided with control buttons that correspond one-to-one with the water pump 4, the electric telescopic rod 8 and the electric cylinder 27 and are used to control their switching.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for detecting cracks in impeller blades, comprising a housing (1), wherein a protective door (14) is hinged to the front side of the housing (1) via a hinge, and a faucet (13) is provided at the lower end of the rear side wall of the housing (1), characterized in that: It also includes a self-cleaning testing agency (2); The self-cleaning detection mechanism (2) includes a protective chamber (21), a detection liquid chamber (22), a rotating shaft (23), a cover plate (24), an annular cleaning tube (28), and a nozzle (29). The protective chamber (21) is located on the bottom wall of the outer shell (1). The detection liquid chamber (22) is slidably connected inside the protective chamber (21). The rotating shaft (23) is rotatably connected to both the left and right sides between the front and rear inner walls of the outer shell (1). The outer arc surface of the rotating shaft (23) is provided with a cover plate (24). The two cover plates (24) are symmetrically arranged. The annular cleaning tube (28) is fixedly connected to the middle of the inner side of the outer shell (1). The inner arc surface of the annular cleaning tube (28) is provided with evenly distributed nozzles (29).

2. The device for detecting cracks in impeller blades according to claim 1, characterized in that: The front side of the housing (1) is provided with a control switch group (12), and the input end of the control switch group (12) is electrically connected to an external power supply.

3. The device for detecting cracks in impeller blades according to claim 2, characterized in that: The self-cleaning detection mechanism (2) also includes an electric cylinder (27), which is installed on the bottom wall of the protective chamber (21). The telescopic end of the electric cylinder (27) is fixedly connected to the lower side of the detection liquid chamber (22), and the input end of the electric cylinder (27) is electrically connected to the output end of the control switch group (12).

4. The device for detecting cracks in impeller blades according to claim 1, characterized in that: The self-cleaning detection mechanism (2) also includes an adjustment frame (25) and a lever (26). The lever (26) is respectively set on the upper left and right sides of the detection liquid tank (22). The lower side of the cover plate (24) is provided with an adjustment frame (25). The middle part of the adjustment frame (25) is located inside the lower adjacent lever (26).

5. The device for detecting cracks in impeller blades according to claim 2, characterized in that: The upper part of the inner shell (1) is provided with an installation plate (3), the upper side of the installation plate (3) is provided with a water tank (6), the upper end of the water tank (6) is provided with a water supply pipe (7), the upper end of the water supply pipe (7) penetrates the upper side wall of the shell (1) and is exposed outside the shell (1).

6. The device for detecting cracks in impeller blades according to claim 5, characterized in that: A water pump (4) is installed on the upper side of the mounting plate (3). The input end of the water pump (4) is electrically connected to the output end of the control switch group (12). The water pump (4) and the water tank (6) are connected in series through a connecting water pipe (11). The water pump (4) is connected to the annular cleaning pipe (28) through the cleaning pipe (5). The middle part of the cleaning pipe (5) passes through the mounting plate (3).

7. The device for detecting cracks in impeller blades according to claim 5, characterized in that: The mounting plate (3) has a placement tray (10) mounted on its lower side via a mounting bracket. The placement tray (10) is located inside the annular cleaning tube (28). An electric telescopic rod (8) is mounted on the upper side of the mounting plate (3). The input end of the electric telescopic rod (8) is electrically connected to the output end of the control switch group (12). The telescopic end of the electric telescopic rod (8) passes through the middle of the mounting plate (3). A rubber pressure head (9) is provided at the telescopic end of the electric telescopic rod (8).

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