A sealing ring leakage rate detection device

Abstract

The application relates to the technical field of seal detection, and discloses a sealing ring leakage rate detection device, which comprises a detection table, detection frames are symmetrically and fixedly installed on the detection table, a driving shaft, supporting plates, object placing plates and a sealing detection mechanism are arranged between the two detection frames, the driving shaft is rotationally arranged on the detection table, the two supporting plates are symmetrically and fixedly installed at the two ends of the driving shaft, and the two object placing plates are symmetrically arranged at the two sides of the driving shaft; the sealing ring leakage rate detection device is provided with the driving shaft, the supporting plates and the two object placing plates which can be alternately converted, and is combined with the division of the detection station and the feeding station and the station control mechanism, so that the leakage detection of a batch of sealing rings is realized at the detection station, meanwhile, the feeding preparation of the next batch of sealing rings can be realized at the feeding station, the feeding preparation time and the detection time are overlapped, the idle waiting of the equipment in the detection cycle is avoided, and the average detection period of a single workpiece is shortened.

Description

Technical Field

[0001] This invention relates to the field of sealing component testing technology, specifically to a device for detecting the leakage rate of sealing rings. Background Technology

[0002] As a critical sealing element, the reliability of sealing performance of sealing rings directly determines the safety, energy efficiency, and service life of key equipment in fields such as machinery, hydraulic systems, and aerospace. Therefore, rapid and accurate automated detection of leakage rates is essential in the production, assembly, and maintenance of sealing rings. With the improvement of industrial automation, traditional detection methods that rely on manual labor, are inefficient, and are easily affected by subjective factors can no longer meet the quality control requirements of modern, mass production.

[0003] Chinese patent CN118130010B discloses a sealing ring sealing performance testing device. The device uses accommodating grooves of different diameters on a conical support mold core to accommodate sealing rings of different specifications, and uses a movable and rotatable feeding mechanism (such as a hook) to achieve workpiece gripping and automatic feeding.

[0004] In the workflow of the above-mentioned device, the detection process occupies the majority of the cycle time. The feeding mechanism must wait for the detection to be completed and reset before it can feed the next time. The equipment idle rate is high. At the same time, only one sealing ring can be detected at a time, resulting in low detection efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a sealing ring leakage rate detection device, which has the function of parallel detection and feeding through dual-station alternation and horizontal locking, thus solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A sealing ring leakage rate detection device includes a detection platform. Detection frames are symmetrically fixedly mounted on the detection platform. A drive shaft, support plates, a placement plate, and a sealing detection mechanism are disposed between the two detection frames. The drive shaft is rotatably mounted on the detection platform. Two support plates are symmetrically fixedly mounted at both ends of the drive shaft. Two placement plates are symmetrically disposed on both sides of the drive shaft, with each end of a placement plate movably connected to one of the two support plates. The sealing detection mechanism includes a placement component, a top sealing component, and a bottom sealing component. The placement component is detachably mounted on the placement plate. The top sealing component and the bottom sealing component are connected... The position is set as the inspection station, and the side of the inspection platform away from the inspection station is set as the loading station. The top seal and bottom seal can be brought close to each other to clamp the placed part, thereby forming a sealed inspection cavity with the sealing ring placed in the placed part. The inspection frame is equipped with a station control mechanism, which includes a rotary drive assembly and a horizontal locking assembly. The rotary drive assembly is connected to the placement plate and is used to drive the two placement plates to alternate between the inspection station and the loading station. The horizontal locking assembly is used to lock the placement plate in a horizontal state when it enters the inspection station and the loading station.

[0007] Preferably, the rotary drive assembly includes a drive motor, a slider, a slide rod, a fixed plate, and a transposition track. The drive motor is fixedly installed on the upper surface of the testing platform. The slider is slidably disposed on one side of the support plate along its length. The slide rod is rotatably mounted on the slider, and one end of the slide rod is fixedly connected to the placement plate. The fixed plate is fixedly installed on one side of the support plate. The transposition track is formed on the side wall of the testing frame, and the inner side wall of the transposition track slides in cooperation with the slide rod.

[0008] Preferably, a connecting rod is horizontally slidably mounted on the fixed plate, one end of the connecting rod is fixedly connected to the slider, and a pressure spring is sleeved on the connecting rod, with both ends of the pressure spring fixedly connected to the slider and the fixed plate, respectively.

[0009] Preferably, the transposition track includes a circular part and a translation part. The circular part is shaped as a circular opening coaxial with the drive shaft. The translation parts are respectively located at the left and right ends of the circular part. When the two slide rods move into the two translation parts and away from the circular part, the two placement plates enter the detection station and the loading station respectively.

[0010] Preferably, the lower end of one of the translation parts is set as an inclined plane, and the upper end of the translation part is set as a horizontal plane; the upper end of the other translation part is set as an inclined plane, and the lower end of the translation part is set as a horizontal plane; when the slide rod enters the translation part, it can slide out from the inclined end of the translation part.

[0011] Preferably, the horizontal locking assembly includes an additional plate, a connecting block, a guide rod, and an eccentric slide rail. The additional plate is fixedly installed on one side wall of the detection frame, and a gap is provided between the additional plate and the detection frame. The connecting block is fixedly installed on the end of the slide rod away from the placement plate. The guide rod is fixedly installed on the connecting block, and the guide rod and the slide rod are respectively located at both ends of the connecting block. The eccentric slide rail is opened on the additional plate, and the guide rod is slidably installed in the eccentric slide rail. The drive shaft is rotatably installed on the additional plate.

[0012] Preferably, the eccentric slide rail includes a semi-circular eccentric portion and an extended straight portion. The arc centers of the two semi-circular eccentric portions are symmetrically arranged on the left and right sides of the drive shaft axis, and the distance between the arc center of the semi-circular eccentric portion and the drive shaft axis is equal to the distance between the guide rod axis and the slide rod axis. The extended straight portions are respectively arranged at both ends of the semi-circular eccentric portion, and the transition position between the semi-circular eccentric portion and the extended straight portion is set as a rounded corner.

[0013] Preferably, the sealing detection mechanism further includes a mounting bracket on which a first linear drive unit and a second linear drive unit are fixedly mounted. A top mounting plate is fixedly mounted on the drive end of the first linear drive unit, and a bottom mounting plate is fixedly mounted on the drive end of the second linear drive unit. The top seal is detachably and fixedly mounted on the top mounting plate, and the bottom seal is detachably and fixedly mounted on the bottom mounting plate.

[0014] Preferably, the placement component has a tube hole connecting its upper and lower ends inside. The upper end of the tube hole has a mounting groove around its periphery for embedding the sealing ring to be tested. The lower end of the top seal is provided with a sealing head. The sealing head is used to press down and make tight contact with the upper surface of the sealing ring in the mounting groove during testing to seal the groove opening, thereby forming an annular sealed testing chamber together with the sealing ring and the mounting groove. The upper end of the bottom seal is provided with a lower connector for sealing the lower end of the tube hole. The top seal has a detection gas channel communicating with the sealed testing chamber. The bottom seal has a detection interface communicating with the tube hole.

[0015] Compared with the prior art, the present invention provides a sealing ring leakage rate detection device, which has the following beneficial effects: 1. This sealing ring leakage rate detection device, by setting up a drive shaft, a support plate, and two interchangeable placement plates, combined with the division of the detection station and the loading station and the station control mechanism, realizes that while the detection station is performing leakage detection on a batch of sealing rings, the loading station can prepare the next batch of sealing rings for loading. This overlaps the loading preparation time with the detection time, avoids the equipment being idle during the detection cycle, shortens the average detection cycle of a single workpiece, and effectively solves the problem of low detection efficiency caused by the serial operation mode of existing single-station detection devices.

[0016] 2. This sealing ring leakage rate detection device employs a station control mechanism comprising a shifting track and an eccentric slide. The circular and translational portions of the shifting track work together to control the rotation and translation of the placement plate. The semi-circular eccentric portion and the extended linear portion of the eccentric slide control the posture of the placement plate under the sliding of the guide rod. This ensures that the placement plate moves smoothly during the rotational switching process and is locked in a horizontal state upon reaching the detection and loading stations. This not only guarantees the accuracy of loading and positioning operations but also provides a stable and reliable foundation for subsequent detection actions, ensuring the repeatability of the detection process and the overall operational stability of the device.

[0017] 3. This sealing ring leakage rate detection device features a detachable mounting plate with multiple placement components, and a sealing detection mechanism consisting of a sealing head, mounting groove, and lower connector. The sealing head creates a partial seal on the sealing ring within the mounting groove to construct an independent annular sealed detection chamber. The lower connector seals the lower end of the pipe hole. Detection gas enters the sealed chamber from the top channel. If the sealing ring leaks, the gas passes through the sealing ring, enters the pipe hole, and is detected from the bottom interface. This structure allows a single mounting plate to carry multiple sealing rings for batch testing, and the testing of each sealing ring is independent and does not interfere with each other. Combined with the alternating workstation mechanism, it can complete several times the workload of a traditional single-piece testing device within a unit time, significantly improving the device's testing throughput and production efficiency. Attached Figure Description

[0018] Figure 1 This is one of the three-dimensional structural schematic diagrams of the sealing ring leakage rate detection device of the present invention; Figure 2 This is a second three-dimensional structural schematic diagram of the sealing ring leakage rate detection device of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the local structure at point A; Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the local structure at point B; Figure 5 This is the third three-dimensional structural schematic diagram of the sealing ring leakage rate detection device of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the local structure at point C; Figure 7 This is the fourth three-dimensional structural schematic diagram of the sealing ring leakage rate detection device of the present invention; Figure 8 This is one of the three-dimensional structural schematic diagrams of the sealing detection mechanism in this invention; Figure 9This is the second three-dimensional structural schematic diagram of the sealing detection mechanism in this invention.

[0019] In the diagram: 1. Testing platform; 2. Testing frame; 21. Drive shaft; 22. Support plate; 23. Shelf; 3. Placement component; 31. Pipe hole; 32. Mounting groove; 4. Top seal; 41. Sealing head; 42. Detection gas channel; 5. Bottom seal; 51. Lower connector; 52. Testing interface; 6. Rotary drive assembly; 61. Drive motor; 62. Slider; 63. Slide rod; 64. Fixing plate; 65. Transposition track; 651. Circular part; 652. Translation part; 66. Connecting rod; 67. Pressure spring; 7. Horizontal locking assembly; 71. Additional plate; 72. Connecting block; 73. Guide rod; 74. Eccentric slide; 741. Semi-circular eccentric part; 742. Extended linear part; 8. Mounting frame; 81. First linear drive unit; 82. Second linear drive unit; 83. Top mounting plate; 84. Bottom mounting plate. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] Example 1 Please see Figure 1 This invention provides a raw material pretreatment device for fish collagen peptide production, including a detection platform 1. Detection racks 2 are symmetrically fixedly mounted on the detection platform 1. A drive shaft 21, support plates 22, a placement plate 23, and a sealing detection mechanism are arranged between the two detection racks 2. The drive shaft 21 is rotatably mounted on the detection platform 1. The two support plates 22 are symmetrically fixedly mounted at both ends of the drive shaft 21. The two placement plates 23 are symmetrically arranged on both sides of the drive shaft 21, and both ends of the placement plates 23 are movably connected to the two support plates 22, respectively. The sealing detection mechanism includes a placement component 3, a top sealing component 4, and a bottom sealing component 5. The placement component 3 is detachably mounted on the placement plate 23. The position between the top seal 4 and the bottom seal 5 is set as the inspection station. The side of the inspection table 1 away from the inspection station is set as the loading station. The top seal 4 and the bottom seal 5 can be brought close to each other to clamp the placement part 3, thereby forming a sealed inspection cavity with the sealing ring placed in the placement part 3. The inspection frame 2 is provided with a station control mechanism, which includes a rotary drive assembly 6 and a horizontal locking assembly 7. The rotary drive assembly 6 is connected to the placement plate 23 and is used to drive the two placement plates 23 to alternately switch between the inspection station and the loading station. The horizontal locking assembly 7 is used to lock the placement plate 23 in a horizontal state when it enters the inspection station and the loading station.

[0022] As can be seen from the above, this application, through a rotating frame consisting of a drive shaft 21, a support plate 22, and a placement plate 23, and a station control mechanism including a rotating drive assembly 6 and a horizontal locking assembly 7, realizes the switching between the inspection and loading positions of the placement plate 23, which can carry multiple placement parts 3. This allows the placement part 3 with a sealing ring to be moved to the inspection station for sealing inspection, while another placement plate 23 that has completed inspection is moved to the loading station for workpiece replacement, so that inspection and loading can be carried out alternately, reducing waiting time.

[0023] When using this device, the operator first installs the sealing ring to be tested into the placement part 3 on the placement plate 23 at the loading station. After starting the drive motor 61, the rotation drive assembly 6 drives the drive shaft 21 and its connected support plate 22 to rotate, causing the two placement plates 23 to alternately switch, so that the placement plate 23 with the sealing ring installed rotates into the testing station. At this time, the horizontal locking assembly 7 locks the placement plate 23 in a horizontal state. Then, the top sealing part 4 and the bottom sealing part 5 move relative to each other, clamping the placement part 3 on the testing station to form a sealed testing chamber for leak rate testing. At the same time, another placement plate 23 that has finished testing is rotated to the loading station and locked in a horizontal state. The operator can remove the tested workpiece and install a new sealing ring to be tested at this station. This cycle can realize the continuous operation of sealing ring testing and loading.

[0024] Example 2 like Figure 2 - Figure 7 As shown, the difference between this embodiment and the above embodiments is that the rotary drive assembly 6 includes a drive motor 61, a slider 62, a slide rod 63, a fixing plate 64, and a transposition track 65. The drive motor 61 is fixedly installed on the upper surface of the detection table 1. The slider 62 is slidably disposed on one side of the support plate 22 along the length direction of the support plate 22. The slide rod 63 is rotatably installed on the slider 62, and one end of the slide rod 63 is fixedly connected to the placement plate 23. The fixing plate 64 is fixedly installed on one side of the support plate 22. The transposition track 65 is opened on the side wall of the detection frame 2, and the inner side wall of the transposition track 65 is slidably engaged with the slide rod 63.

[0025] As can be seen from the above, the drive motor 61 drives the support plate 22 to rotate around the drive shaft 21, and the slide rod 63 slides under the constraint of the switching track 65, thereby converting the rotation of the drive shaft 21 into the compound motion of the shelf 23, realizing its conversion between different work positions.

[0026] A connecting rod 66 is horizontally slidably mounted on the fixed plate 64. One end of the connecting rod 66 is fixedly connected to the slider 62. A pressure spring 67 is sleeved on the connecting rod 66. The two ends of the pressure spring 67 are fixedly connected to the slider 62 and the fixed plate 64, respectively.

[0027] As can be seen from the above, the pressure spring 67 applies a continuous elastic force to the slider 62 through the connecting rod 66, so that the slider 63 can always maintain close contact with the inner wall of the track when sliding in the transposition track 65.

[0028] The transposition track 65 includes a circular portion 651 and a translation portion 652. The circular portion 651 is a circular opening coaxial with the drive shaft 21. The translation portions 652 are respectively located at the left and right ends of the circular portion 651. When the two slide rods 63 move into the two translation portions 652 and away from the circular portion 651, the two placement plates 23 enter the detection station and the loading station respectively.

[0029] As can be seen from the above, by setting the transposition track 65, which includes a circular part 651 coaxial with the drive shaft 21 and translation parts 652 located at both ends of the circular part 651, the movement path of the shelf 23 is controlled. When the slide rod 63 slides in the circular part 651, the shelf 23 rotates around the drive shaft 21 with the support plate 22. When the slide rod 63 enters the translation part 652 and moves to its end, the shelf 23 translates on the basis of rotation, and finally accurately reaches and positions itself at the preset inspection station or loading station. This method also reduces the height that the top seal 4 and the bottom seal 5 need to move up and down to make room for the shelf 23 to move.

[0030] One of the translation parts 652 has a lower end set as an inclined surface and an upper end set as a horizontal surface; the other translation part 652 has an upper end set as an inclined surface and a lower end set as a horizontal surface; when the slide rod 63 enters the translation part 652, it can slide out from the inclined end of the translation part 652.

[0031] As can be seen from the above, the design of the translation part 652, with one end being an inclined plane and the other end being a horizontal plane, allows the slide rod 63 to slide smoothly out of the translation part 652 along the inclined plane under the action of the pressure spring 67, and to lock its position when it reaches the horizontal plane. This provides a simple guiding and locking method for the precise positioning of the shelf 23 at the end of the workstation transition.

[0032] The horizontal locking assembly 7 includes an auxiliary plate 71, a connecting block 72, a guide rod 73, and an eccentric slide rail 74. The auxiliary plate 71 is fixedly installed on one side wall of the detection frame 2, and a gap is provided between the auxiliary plate 71 and the detection frame 2. The connecting block 72 is fixedly installed on the end of the slide rod 63 away from the placement plate 23. The guide rod 73 is fixedly installed on the connecting block 72, and the guide rod 73 and the slide rod 63 are respectively located at both ends of the connecting block 72. The eccentric slide rail 74 is formed on the auxiliary plate 71, and the guide rod 73 is slidably installed in the eccentric slide rail 74. The drive shaft 21 is rotatably installed on the auxiliary plate 71.

[0033] As can be seen from the above, the sliding rod 63 is connected to the guide rod 73 by the connecting block 72, and the movement trajectory of the guide rod 73 is constrained by the eccentric slide 74 opened on the auxiliary plate 71. When the shelf 23 changes its posture due to the movement of the sliding rod 63 in the transposition track 65, the cooperation between the eccentric slide 74 and the guide rod 73 can compensate for and limit the rotation angle of the sliding rod 63, thereby ensuring that the shelf 23 can maintain a horizontal state when it reaches a specific position.

[0034] The eccentric slide 74 includes a semi-annular eccentric portion 741 and an extended straight portion 742. The arc centers of the two semi-annular eccentric portions 741 are symmetrically arranged on the left and right sides of the axis of the drive shaft 21, and the distance between the arc center of the semi-annular eccentric portion 741 and the axis of the drive shaft 21 is equal to the distance between the axis of the guide rod 73 and the axis of the slide rod 63. The extended straight portion 742 is respectively arranged at both ends of the semi-annular eccentric portion 741, and the transition position between the semi-annular eccentric portion 741 and the extended straight portion 742 is set as a rounded corner.

[0035] As can be seen from the above, since there is a specific offset distance between the arc center of the semi-annular eccentric part 741 and the axis of the drive shaft 21, and this distance is equal to the distance between the axis of the guide rod 73 and the axis of the slide rod 63, this design causes the relative positional relationship between the guide rod 73 and the slide rod 63 to change under the constraint of the eccentric slide rail 74 when the shelf 23 rotates around the drive shaft 21, thereby controlling the tilt angle of the shelf 23. Finally, when the guide rod 73 slides to the outer straight part 742, the shelf 23 is locked in a horizontal state.

[0036] Example 3 like Figure 7 - Figure 9 As shown, the difference between this embodiment and the above embodiment is that the sealing detection mechanism further includes a mounting frame 8, on which a first linear drive unit 81 and a second linear drive unit 82 are fixedly mounted. A top mounting plate 83 is fixedly mounted on the drive end of the first linear drive unit 81, and a bottom mounting plate 84 is fixedly mounted on the drive end of the second linear drive unit 82. The top seal 4 is detachably and fixedly mounted on the top mounting plate 83, and the bottom seal 5 is detachably and fixedly mounted on the bottom mounting plate 84.

[0037] As can be seen from the above, the mounting bracket 8 and the first linear drive unit 81 and the second linear drive unit 82 installed on it realize the linear drive of the top seal 4 and the bottom seal 5, so that they can reliably perform the action of relatively approaching to clamp the placement 3 or relatively moving away to release the placement 3, providing a power basis for the sealing and opening of the inspection station.

[0038] The placement component 3 has a tube hole 31 connecting its upper and lower ends. The upper port of the tube hole 31 has a mounting groove 32 for embedding the sealing ring to be tested around its periphery. The lower end of the top sealing component 4 is provided with a sealing head 41. The sealing head 41 is used to press down and closely contact the upper surface of the sealing ring in the mounting groove 32 during testing to seal the groove opening of the mounting groove 32, thereby forming an annular sealed testing cavity together with the sealing ring and the mounting groove 32. The upper end of the bottom sealing component 5 is provided with a lower connector 51 for sealing the lower end of the tube hole 31. The top sealing component 4 has a detection gas channel 42 that communicates with the sealed testing cavity. The bottom sealing component 5 has a detection interface 52 that communicates with the tube hole 31.

[0039] As can be seen from the above, in this embodiment, the core of the detection function lies in the sealing detection structure composed of the placement member 3, the top seal member 4, and the bottom seal member 5. It presses down and closely contacts the upper surface of the sealing ring to be tested in the mounting groove 32 through the sealing head 41, thereby sealing the groove opening of the mounting groove 32. Thus, together with the sealing ring and the side wall of the mounting groove 32, it constructs an annular volume space that is isolated from the outside and surrounds the upper port of the pipe hole 31, i.e., a sealed detection chamber. At the same time, the lower connector 51 at the upper end of the bottom seal member 5 is tightly connected to the lower port of the pipe hole 31 during the test, thereby sealing the lower end of the pipe hole 31. Thus, structurally, two independent chambers are formed by the sealing ring body to be tested in the radial direction: one is the high-pressure side or detection gas side located on the outer periphery of the sealing ring and composed of the sealed detection chamber, and the other is the low-pressure side or reference side located on the inner periphery of the sealing ring and composed of the inner cavity of the pipe hole 31. In the actual performance of leak rate detection, there are two typical detection modes.The first method is the pressure decay detection mode. In this mode, the detection gas channel 42 is connected to an external gas source that can provide stable pressure detection gas, and the detection interface 52 is connected to a high-precision pressure sensor or pressure transmitter. At the start of the detection, the external gas source fills the sealed detection chamber with detection gas at a certain pressure through the detection gas channel 42. The seal of the lower connector 51 on the lower end of the pipe hole 31 creates a closed reference space with a known initial pressure inside the pipe hole 31. Subsequently, the gas source is turned off, and the system enters the pressure holding monitoring stage. If the seal ring under test is intact and leak-free, the pressure inside the sealed detection chamber will remain stable, and the pressure sensor reading will not change significantly. If the seal ring has a defect that causes leakage, the detection gas will leak radially through the seal ring body into the inner cavity of the pipe hole 31, causing the pressure inside the sealed detection chamber to decrease over time, or causing the pressure inside the pipe hole 31 to increase. By monitoring this pressure change rate through the pressure sensor, the equivalent leakage rate of the seal ring can be calculated. The second method is the flow detection method or tracer gas leak detection method. In this mode, the detection gas channel 42 is connected to an external gas source that can provide stable pressure detection gas, and the detection interface 52 is connected to a high-precision pressure sensor or pressure transmitter. 2 is connected to a gas source that provides a stable flow rate of detection gas or a specific tracer gas such as helium. Detection interface 52 is connected to the sampling port of a flow meter or a dedicated leak detector such as a helium mass spectrometer leak detector. During the detection process, a stable flow rate of detection gas is continuously or according to a set program introduced into the sealed detection chamber. If the sealing ring is intact, the gas cannot pass through, and the flow rate read from the device connected to detection interface 52 will be extremely low or zero. If there is a leak in the sealing ring, the gas will pass through the sealing ring and enter the pipe hole 31, and flow out from detection interface 52 with the airflow in the pipe hole 31. The leak flow rate is directly measured by the flow meter, or the concentration of the tracer gas is detected by the helium mass spectrometer leak detector, thereby directly or indirectly obtaining the leakage rate of the sealing ring quantitatively. In summary, this structure, by constructing a dual-chamber structure separated by a sealing ring, provides a universal physical basis for implementing various mainstream leak rate detection methods such as pressure attenuation, direct flow measurement, or tracer gas detection. This allows external leak detection equipment to sense and judge the sealing performance of the sealing ring by monitoring pressure changes, gas flow rate, or specific gas composition at detection interface 52.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A sealing ring leakage rate detection device, comprising a detection table (1), characterized in that: The testing platform (1) is symmetrically fixedly equipped with testing racks (2). Between the two testing racks (2) are a drive shaft (21), a support plate (22), a placement plate (23), and a sealing testing mechanism. The drive shaft (21) is rotatably mounted on the testing platform (1). The two support plates (22) are symmetrically fixedly mounted at both ends of the drive shaft (21). The two placement plates (23) are symmetrically arranged on both sides of the drive shaft (21), and the two ends of the placement plates (23) are movably connected to the two support plates (22) respectively. The sealing testing mechanism includes a placement component (3), a top seal (4), and a bottom seal (5). The placement component (3) is detachably mounted on the placement plate (23). The top seal (4) is sealed to the bottom seal. The position between the seals (5) is set as the inspection station. The side of the inspection table (1) away from the inspection station is set as the loading station. The top seal (4) and the bottom seal (5) can be relatively close to each other to clamp the placement piece (3), thereby forming a sealed inspection cavity with the sealing ring placed in the placement piece (3). The inspection frame (2) is provided with a station control mechanism. The station control mechanism includes a rotary drive assembly (6) and a horizontal locking assembly (7). The rotary drive assembly (6) is connected to the placement plate (23) and is used to drive the two placement plates (23) to alternate between the inspection station and the loading station. The horizontal locking assembly (7) is used to lock the placement plate (23) in a horizontal state when it enters the inspection station and the loading station.

2. The sealing ring leakage rate detection device according to claim 1, characterized in that: The rotary drive assembly (6) includes a drive motor (61), a slider (62), a slide rod (63), a fixed plate (64), and a transposition track (65). The drive motor (61) is fixedly installed on the upper surface of the testing table (1). The slider (62) is slidably disposed on one side of the support plate (22) along the length direction of the support plate (22). The slide rod (63) is rotatably mounted on the slider (62), and one end of the slide rod (63) is fixedly connected to the placement plate (23). The fixed plate (64) is fixedly installed on one side of the support plate (22). The transposition track (65) is opened on the side wall of the testing frame (2), and the inner side wall of the transposition track (65) is slidably engaged with the slide rod (63).

3. The sealing ring leakage rate detection device according to claim 2, characterized in that: A connecting rod (66) is horizontally slidably mounted on the fixed plate (64). One end of the connecting rod (66) is fixedly connected to the slider (62). A pressure spring (67) is sleeved on the connecting rod (66). The two ends of the pressure spring (67) are fixedly connected to the slider (62) and the fixed plate (64) respectively.

4. The sealing ring leakage rate detection device according to claim 2, characterized in that: The transposition track (65) includes a circular part (651) and a translation part (652). The circular part (651) is a circular opening coaxial with the drive shaft (21). The translation parts (652) are respectively located at the left and right ends of the circular part (651). When the two slide rods (63) move into the two translation parts (652) and away from the circular part (651), the two placement plates (23) enter the detection station and the loading station respectively.

5. The sealing ring leakage rate detection device according to claim 4, characterized in that: One of the translation parts (652) has a lower end set as an inclined surface and an upper end set as a horizontal surface; the other translation part (652) has an upper end set as an inclined surface and a lower end set as a horizontal surface; when the slide rod (63) enters the translation part (652), it can slide out from the inclined end of the translation part (652).

6. The sealing ring leakage rate detection device according to claim 5, characterized in that: The horizontal locking assembly (7) includes an auxiliary plate (71), a connecting block (72), a guide rod (73), and an eccentric slide (74). The auxiliary plate (71) is fixedly installed on one side wall of the detection frame (2), and there is a gap between the auxiliary plate (71) and the detection frame (2). The connecting block (72) is fixedly installed at the end of the slide rod (63) away from the placement plate (23). The guide rod (73) is fixedly installed on the connecting block (72), and the guide rod (73) and the slide rod (63) are respectively located at both ends of the connecting block (72). The eccentric slide (74) is opened on the auxiliary plate (71), and the guide rod (73) is slidably installed in the eccentric slide (74). The drive shaft (21) is rotatably installed on the auxiliary plate (71).

7. The sealing ring leakage rate detection device according to claim 6, characterized in that: The eccentric slide (74) includes a semi-annular eccentric part (741) and an extended straight part (742). The arc centers of the two semi-annular eccentric parts (741) are symmetrically arranged on the left and right sides of the axis of the drive shaft (21). The distance between the arc center of the semi-annular eccentric part (741) and the axis of the drive shaft (21) is equal to the distance between the axis of the guide rod (73) and the axis of the slide rod (63). The extended straight part (742) is respectively arranged at both ends of the semi-annular eccentric part (741). The transition position between the semi-annular eccentric part (741) and the extended straight part (742) is set as a rounded corner.

8. The sealing ring leakage rate detection device according to claim 1, characterized in that: The sealing detection mechanism also includes a mounting bracket (8), on which a first linear drive unit (81) and a second linear drive unit (82) are fixedly mounted. A top mounting plate (83) is fixedly mounted on the drive end of the first linear drive unit (81), and a bottom mounting plate (84) is fixedly mounted on the drive end of the second linear drive unit (82). The top seal (4) is detachably and fixedly mounted on the top mounting plate (83), and the bottom seal (5) is detachably and fixedly mounted on the bottom mounting plate (84).

9. The sealing ring leakage rate detection device according to claim 1, characterized in that: The placement component (3) has a pipe hole (31) connecting its upper and lower ends. The upper port of the pipe hole (31) has an installation groove (32) for embedding the sealing ring to be tested. The lower end of the top sealing component (4) has a sealing head (41). The sealing head (41) is used to press down and closely contact the upper surface of the sealing ring in the installation groove (32) during testing to seal the groove opening of the installation groove (32), thereby forming an annular sealed testing cavity together with the sealing ring and the installation groove (32). The upper end of the bottom sealing component (5) has a lower connector (51) for sealing the lower end of the pipe hole (31). The top sealing component (4) has a detection gas channel (42) that communicates with the sealed testing cavity. The bottom sealing component (5) has a detection interface (52) that communicates with the pipe hole (31).

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