Water and gas integrated leak detection device

Abstract

The utility model discloses a water gas integrated leak detection device, include: support frame, sealing tool, sealing tool liftable assembly in support frame, sealing tool is connected with the first drive component for driving sealing tool lift movement, sealing tool lift movement is used for closing or bare of the through -hole of speed reducer box body, air tightness detection subassembly, air tightness detection subassembly is used for detecting pressure change value when filling compressed air after sealing tool closes the through -hole of speed reducer box body, leak point detection device, leak point detection device liftable assembly in support frame can solve the leak detection of speed reducer box body needs to immerse and bring a series of troubles such as after immersion need to blow dry or dry, and through the compressed air filling sealed speed reducer box body observes whether the internal air pressure drops can judge whether there is leak point but also can not find the leak point position of the deficiency conveniently quickly.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology for gearbox housings, and in particular to a water-air integrated leak detection device. Background Technology

[0002] Gear reducers are key equipment in the transmission field and are widely used in industry. Defects in die casting or processing of gear reducer housings can lead to poor air tightness. Poor air tightness can cause lubricating oil leakage, resulting in insufficient lubrication and accelerated wear of internal parts. It can also allow dust, moisture and impurities to enter the reducer, contaminating the lubricating oil and causing corrosion, wear or jamming of parts, affecting the performance and lifespan of the reducer.

[0003] To ensure the long-term use of speed reducers, air tightness testing is necessary. Existing technologies, such as the Chinese utility model patent with publication number CN211553209U, disclose an air tightness testing fixture for automotive speed reducer housings. This fixture involves filling the speed reducer housing with compressed air, then submerging it in water to observe for air bubbles, thus detecting the air tightness and leak points. However, this method has several problems: low efficiency, and the fact that the reducer is submerged regardless of whether it leaks adds unnecessary steps for non-leaking speed reducers. Furthermore, submerging non-leaking speed reducers in water requires subsequent air-drying or air-blowing, wasting manpower and resources. Therefore, a water-air integrated leak detection device was designed. Utility Model Content

[0004] To overcome at least one of the defects described in the prior art, this utility model provides a water-air integrated leak detection device. It solves the problems of requiring immersion in water for leak detection of the gearbox, which leads to a series of inconveniences such as the need for subsequent drying, and the shortcomings of using compressed air to fill the sealed gearbox and observing the drop in internal air pressure to determine the presence of a leak, but not being able to easily and quickly locate the leak.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] A water-air integrated leak detection device includes: a support frame; a sealing fixture, which is vertically mounted on the support frame and connected to a first drive assembly for driving the sealing fixture to move vertically, the vertical movement of the sealing fixture being used to seal or expose the through hole of a reducer housing; an airtightness detection assembly, which is used to detect pressure changes when compressed air is filled in after the sealing fixture seals the through hole of the reducer housing; and a leak detection device, which is vertically mounted on the support frame and connected to a second drive assembly for driving the leak detection device to move vertically; wherein, when the detected pressure change value inside the reducer housing exceeds a preset value, the vertical movement of the leak detection device is used to place the reducer housing inside for leak detection.

[0007] By adopting the above solution, the air tightness detection component is used to detect whether the gearbox is leaking. Only gearboxes with leaks are subjected to water testing, avoiding unnecessary operational troubles. Combining air tightness testing with water testing achieves efficient and accurate leak detection.

[0008] Furthermore, the support frame includes: a support frame; a support plate disposed on the support frame, the support plate including a top support plate for assembling the first drive assembly, a middle support plate for placing the reducer housing, and a bottom support plate for assembling the second drive assembly, the top support plate, the middle support plate, and the bottom support plate being disposed at the top, middle, and bottom of the support frame, respectively.

[0009] By adopting the above scheme, the layered design rationally arranges the first drive components, the reducer housing, and the second drive components, reducing the floor space. Moreover, the reducer housing is placed on the support plate, which facilitates the first drive components to drive the sealing fixture to close the reducer housing or the second drive components to drive the leak detection device to immerse the reducer housing in it.

[0010] Furthermore, the sealing fixture is a sealing block, which is connected to the output shaft of the first drive assembly.

[0011] By adopting the above solution, the sealing block moves up and down to directly contact the through hole of the reducer housing, blocking the through hole and ensuring the sealing of the reducer housing.

[0012] Furthermore, the sealing block is provided with an air inlet and an air inlet hole leading to the inside of the reducer housing, and the air inlet and the air inlet are connected.

[0013] By adopting the above scheme, uniform air filling of the reducer housing can be achieved through the design of the air inlet.

[0014] Furthermore, the airtightness detection component includes: a detection pipe, one end of which is connected to the air inlet; a detection sensor, which is mounted on the other end of the detection pipe; and a control module, which is electrically connected to the detection sensor.

[0015] By adopting the above scheme, the detection sensor can monitor pressure changes in real time, ensuring the accuracy of the detection results. Furthermore, the control module can automatically determine whether there is a leak based on the data from the detection sensor, reducing manual intervention and achieving a high degree of automation and intelligence.

[0016] Furthermore, it also includes a display module, which is electrically connected to the control module.

[0017] By adopting the above solution, the display module displays the detection data and results in real time, which facilitates the operator's observation, improves the portability of user operation, and enhances the visualization of monitoring data.

[0018] Furthermore, the leak detection device includes: a water tank, the water tank having an open top and a hollow interior forming a receiving space for containing water; wherein the water tank is drively connected to the output shaft of the second drive assembly.

[0019] By adopting the above solution, the water tank is raised and lowered through the second drive component, which has a high degree of automation. When the reducer housing is immersed in the water tank, bubbles will appear at the leak point, making it easy to observe the leak point.

[0020] Furthermore, multiple support columns are provided between the support middle plate and the support bottom plate, and a guide sleeve corresponding to the support column is installed on the water tank. The guide sleeve can slide up and down relative to the support column.

[0021] By adopting the above scheme, the smoothness of water tank lifting and lowering is ensured through the coordinated design of the guide sleeve and the support column.

[0022] Furthermore, the first drive component and the second drive component are one or more of a pneumatic cylinder, a hydraulic cylinder, or an oil cylinder.

[0023] By adopting the above solutions, cylinders, hydraulic cylinders, or oil cylinders all have good driving performance and stability, and multiple options improve the applicability of the device.

[0024] In summary, the water-gas integrated leak detection device provided by this utility model has the following technical effects:

[0025] 1. Highly efficient leak detection: The air tightness detection component makes a preliminary judgment on whether there is an air leak, and only the reducer with an air leak is subjected to water testing;

[0026] 2. Accurately identify the leak point: Immerse the leaking reducer in the water tank and confirm the leak point by observing the bubbling points. This method is convenient and quick. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the planar structure of an embodiment of the present utility model;

[0029] Figure 3 This is a structural block diagram of an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the planar structure of another embodiment of the present utility model;

[0031] Figure 5 for Figure 2 Enlarged view of point A;

[0032] The meanings of the reference numerals in the attached drawings are as follows: 1. Support frame; 11. Support frame; 111. Longitudinal rod; 112. Long connecting rod; 113. Short connecting rod; 12. Support plate; 121. Support top plate; 122. Support middle plate; 123. Support bottom plate; 2. Sealing fixture; 21. Sealing block; 211. Air inlet; 212. Air inlet hole; 3. First drive assembly; 4. Air tightness detection assembly; 41. Detection pipe; 42. Detection sensor; 43. Control module; 5. Leakage detection device; 51. Water tank; 511. Guide sleeve; 6. Second drive assembly; 7. Display module; 8. Support column; 9. Connecting column; 10. Reducer housing; 101. Third drive assembly; 102. Sealing gasket. Detailed Implementation

[0033] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described and discussed below with reference to the accompanying drawings. Obviously, what is described here is only a part of the examples of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the protection scope of this invention.

[0034] To facilitate understanding of the embodiments of this utility model, further explanations and descriptions will be provided below with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this utility model.

[0035] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0037] See Figure 1 This utility model discloses a water-air integrated leak detection device, comprising a support frame 1, a sealing fixture 2, a first drive assembly 3, an airtightness detection assembly 4, a leak detection device, and a second drive assembly 6. The sealing fixture 2 is movably mounted on the support frame 1. The first drive assembly 3 drives the sealing fixture 2 to move up and down, and the moving motion of the sealing fixture 2 is used to seal or expose the through hole of the reducer housing 10. The airtightness detection assembly 4 is used to detect the pressure change value when compressed air is filled into the reducer housing 10 after the sealing fixture 2 seals the through hole. The leak detection device is movably mounted on the support frame 1, and the second drive assembly 6 drives the leak detection device to move up and down. The airtightness detection assembly 4 detects whether the reducer is leaking. Only the reducer housing 10 with leaks is subjected to water testing, avoiding unnecessary operational troubles. Combining airtightness testing and water testing achieves efficient and accurate leak detection.

[0038] Specifically, when the air tightness detection component 4 detects that the pressure change value inside the reducer housing 10 exceeds the preset value, the leakage detection device moves up and down to place the reducer housing 10 inside for leakage detection; if the air tightness detection component 4 detects that the pressure change value inside the reducer housing 10 is less than the preset value, it indicates that the reducer housing 10 is not leaking air, and the leakage detection device does not need to move up and down.

[0039] See Figure 2 and Figure 4The support frame 1 includes a support frame 11 and a support plate 12. The support frame 11 includes four longitudinal rods 111, four long connecting rods 112 and six short connecting rods 113, which are welded to form a rectangular frame. The four long connecting rods 112 are divided into two groups (two in each group and symmetrically arranged) and are spaced apart at the long side of the rectangular frame. The six short connecting rods 113 are divided into three groups (two in each group and symmetrically arranged) and are spaced apart at the short side of the rectangular frame. The support plate 12 is disposed on the support frame 11. The support plate 12 includes a top support plate 121 for assembling the first drive assembly 3, a middle support plate 122 for placing the reducer housing 10, and a bottom support plate 123 for assembling the second drive assembly 6. The top support plate 121, the middle support plate 122, and the bottom support plate 123 are respectively disposed at the top, middle, and bottom of the support frame 11. The layered design rationally arranges the first drive components 3, the reducer housing 10, and the second drive components 6, reducing the floor space. Moreover, the reducer housing 10 is placed on the middle support plate 122, which facilitates the first drive components 3 to drive the sealing fixture 2 to seal the reducer housing 10 or facilitates the second drive components 6 to drive the leak detection device to immerse the reducer housing 10 therein.

[0040] More specifically, the top support plate 121 is mounted on the upper short connecting rod 113, the lower short connecting rod 113 and the long connecting rod 112 surround the bottom support plate 123 in the middle, and the middle short connecting rod 113 and the long connecting rod 112 surround the middle support plate 122 in the middle. To facilitate the subsequent lifting and lowering movement of the leak detection device to immerse the reducer housing 10, a gap is left between the middle support plate 122 and the surrounding short connecting rods 113 and long connecting rods 112. Multiple connecting rods 9 are provided between the middle support plate 122 and the top support plate 121 to fix the position of the middle support plate 122.

[0041] In this embodiment, refer to Figure 2 and Figure 5 The first drive assembly 3 is one of a pneumatic cylinder, a hydraulic cylinder, or a hydraulic cylinder. All three types of cylinders offer good driving performance and stability, and the variety of options improves the applicability of the device. The sealing fixture 2 is a sealing block 21, which is connected to the output shaft of the first drive assembly 3. The reducer housing 10 has a through hole, located above it. The sealing block 21 moves up and down, directly contacting the through hole to block it and ensure the seal of the reducer housing 10.

[0042] Among them, see Figure 4In some embodiments, the reducer housing 10 has through holes, and multiple through holes are provided on the reducer housing 10. These through holes are located on the top and both sides of the reducer housing 10. A lateral drive sealing assembly is also provided on the support plate 122. The lateral drive sealing assembly is located on both sides of the reducer housing 10. The lateral drive sealing assembly includes a third drive assembly 101 and a sealing gasket 102. The sealing gasket 102 is drive-connected to the output shaft of the third drive assembly 101. The sealing gasket 102 corresponds to the through holes on both sides of the reducer housing 10 to achieve a sealing effect. Specifically, the third drive assembly 101 is one of a pneumatic cylinder, a hydraulic cylinder, or an oil cylinder. Pneumatic cylinders, hydraulic cylinders, or oil cylinders all have good driving performance and stability, and multiple choices improve the applicability of the device. The sealing gasket 102 is made of rubber, which has good sealing performance and better performance.

[0043] In this embodiment, refer to Figure 2 As shown, the sealing block 21 has a conical cross-section. The sealing block 21 is provided with an air inlet 211 and an air inlet hole 212 leading to the interior of the reducer housing 10. The air inlet 211 is located on one side wall of the sealing block 21. The air inlet hole 212 is designed to ensure uniform air supply to the interior of the reducer housing 10. In this embodiment, the air inlet hole 212 can be designed as one or multiple, without specific limitation.

[0044] In this embodiment, refer to Figure 2 and Figure 3 As shown, the airtightness detection component 4 includes a detection pipe 41, a detection sensor 42, a control module 43, and a display module 7. One end of the detection pipe 41 is connected to the air inlet 211, the detection sensor 42 is mounted on the other end of the detection pipe 41, the control module 43 is electrically connected to the detection sensor 42, and the display module 7 is mounted on the support top plate 121 and electrically connected to the control module 43. In this embodiment, the display module 7 is mounted on the outer surface of the electrical box, and the control module 43 is mounted inside the electrical box. In this embodiment, the display module 7 is used to display the pressure change value inside the reducer housing 10. The detection sensor 42 can monitor the pressure change in real time to ensure the accuracy of the detection results. The control module 43 can automatically determine whether there is an air leak based on the data from the detection sensor 42, reducing manual intervention and achieving a high degree of automation and intelligence. The display module 7 displays the detection data and results in real time, which is convenient for operators to observe. Moreover, the integrated design of the display module 7 and the control module 43 improves the portability of user operation and the visualization of monitoring data.

[0045] The detection sensor 42 is specifically a high-precision pressure sensor, which can directly monitor the pressure changes inside the reducer housing 10. If the reducer housing 10 has good airtightness, the internal pressure remains relatively stable for a period of time; if there is an air leak in the reducer housing 10, the pressure inside the housing will gradually decrease. The airtightness of the reducer housing 10 is determined by observing the pressure change measured by the high-precision pressure sensor. For example, if the pressure change inside the reducer housing 10 exceeds 0.05 MPa within a set 3-minute detection period, it is determined that the reducer housing 10 has an air leak. This detection principle is simple and the equipment cost is low. More specifically, in this embodiment, the high-precision pressure sensor is installed at the other end of the detection pipe 41 by means of a threaded connection or flange connection, and the high-precision pressure sensor and the detection pipe 41 are sealed to prevent gas from leaking from the gap between the detection pipe 41 and the high-precision pressure sensor, which would affect the detection results.

[0046] In this embodiment, a three-way valve (not shown) is provided at the air inlet 211. One outlet of the three-way valve is connected to the air inlet 211, the second outlet of the three-way valve is connected to the detection pipeline 41, and the third outlet of the three-way valve is connected to the inflation device (not shown). The third outlet of the three-way valve and the inflation device are connected through a delivery pipeline (not shown). The inflation device is an air compressor, which fills the reducer housing 10 with compressed gas. An inflation valve is also provided on the delivery pipeline. The inflation valve facilitates cutting off the delivery path between the delivery pipeline and the reducer housing 10 after inflation, so as to avoid affecting the detection results.

[0047] In this embodiment, refer to Figure 2 and Figure 4 As shown, the leak detection device includes a water tank 51, which has an open top and a hollow interior to form a water-containing space. The second drive assembly 6 is one or more of a pneumatic cylinder, hydraulic cylinder, or oil cylinder. These cylinders all offer good driving performance and stability, and the variety of options improves the device's applicability. The water tank 51 is connected to the output shaft of the second drive assembly 6, enabling the water tank 51 to be raised and lowered. This provides a high degree of automation. When the reducer housing 10 is immersed in the water tank 51, bubbles will appear at the leak point, making it easy to observe. When the water tank 51 moves up and down, the support plate 122 and the reducer housing 10 are immersed in it.

[0048] To ensure the smooth lifting and lowering of the water tank 51, multiple support columns 8 are provided between the support middle plate 122 and the support bottom plate 123. The water tank 51 is equipped with guide sleeves 511 corresponding to the number of support columns 8. Specifically, there are four support columns 8 and four guide sleeves 511, which are arranged in a matrix. The guide sleeves 511 can slide relative to the support columns 8 to achieve smooth lifting and lowering of the water tank 51.

[0049] The working principle and steps of this utility model are explained below:

[0050] The first drive assembly 3 is activated to seal the sealing block 21 and the through hole of the reducer housing 10. Compressed air is then injected into the reducer housing 10 through the inflation device. After inflation is complete, the inflation valve is closed. The pressure change value inside the reducer housing 10 from the start of inflation to the end of the test is detected by the detection sensor 42. The pressure change value is displayed on the display module 7. When the pressure change value exceeds the preset value, the second drive assembly 6 is activated to move the water tank 51 upward, immersing the reducer housing 10 in it to observe the leakage point. When the pressure change value does not exceed the preset value, the reducer housing 10 can be removed.

[0051] In summary, the water-gas integrated leak detection device provided by this utility model has the following technical effects:

[0052] 1. High-efficiency air leakage detection: The air tightness detection component 4 makes a preliminary judgment on whether there is an air leak. Only the reducer housing 10 with an air leak is subjected to water testing.

[0053] 2. To accurately identify the leak, the leaking gearbox 10 is immersed in the water tank 51, and the leak is confirmed by observing the bubbling points, which is convenient and quick.

[0054] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A water-gas integrated leak detection device, characterized in that, include: Support frame (1); A sealing fixture (2) is mounted on the support frame (1) in a lifting manner. The sealing fixture (2) is connected to a first drive assembly (3) for driving the lifting movement of the sealing fixture (2). The lifting movement of the sealing fixture (2) is used to close or expose the through hole of the reducer housing (10). Air tightness testing component (4), the air tightness testing component (4) is used to detect the pressure change value when compressed air is filled in after the sealing fixture (2) seals the through hole of the reducer housing (10); A leak detection device is mounted on the support frame (1) in a liftable manner. The leak detection device is connected to a second drive assembly (6) for driving the lifting and lowering movement of the leak detection device. When the pressure change value inside the gearbox (10) exceeds the preset value, the leakage detection device moves up and down to place the gearbox (10) inside for leakage detection.

2. The water-gas integrated leak detection device according to claim 1, characterized in that, The support frame (1) includes: Supporting framework (11); A support plate (12) is disposed on the support frame (11). The support plate (12) includes a top support plate (121) for assembling the first drive assembly (3), a middle support plate (122) for placing the reducer housing (10), and a bottom support plate (123) for assembling the second drive assembly (6). The top support plate (121), the middle support plate (122), and the bottom support plate (123) are respectively disposed at the top, middle, and bottom of the support frame (11).

3. The water-gas integrated leak detection device according to claim 1, characterized in that, The sealing fixture (2) is a sealing block (21), which is connected to the output shaft of the first drive assembly (3) via a transmission connection.

4. The water-gas integrated leak detection device according to claim 3, characterized in that, The sealing block (21) is provided with an air inlet (211) and an air inlet hole (212) leading to the inside of the reducer housing (10), and the air inlet (211) and the air inlet hole (212) are connected.

5. The water-gas integrated leak detection device according to claim 4, characterized in that, The airtightness detection component (4) includes: A detection pipe (41) is provided, one end of which is connected to the air inlet (211). A detection sensor (42) is mounted at the other end of the detection pipe (41); The control module (43) is electrically connected to the detection sensor (42).

6. The water-gas integrated leak detection device according to claim 5, characterized in that, It also includes a display module (7), which is electrically connected to the control module (43).

7. The water-gas integrated leak detection device according to claim 2, characterized in that, The leak detection device includes: Water tank (51), the top of which is open and the interior is hollow to form a receiving space for holding water; The water tank (51) is connected to the output shaft of the second drive assembly (6) via a transmission connection.

8. The water-gas integrated leak detection device according to claim 7, characterized in that, Multiple support columns (8) are provided between the support middle plate (122) and the support bottom plate (123). A guide sleeve (511) corresponding to the support column (8) is installed on the water tank (51). The guide sleeve (511) can slide up and down relative to the support column (8).

9. A water-gas integrated leak detection device according to claim 1 or 2, characterized in that, The first drive component (3) and the second drive component (6) are one or more of a cylinder, a hydraulic cylinder or an oil cylinder.

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