Bubble leakage device

Abstract

The invention discloses a bubble leakage device, and relates to the technical field of bubble leakage in engineering laboratories, the bubble leakage device comprises a transparent liquid storage box body, a stable support and a leakage monitoring box, the transparent liquid storage box body is arranged on the stable support, the upper end of the transparent liquid storage box body is attached to a movable box cover with the leakage monitoring box, the box cover is provided with a rapid buckle assembly, a limiting assembly and a mounting cylinder, and a fixing buckle is arranged in the box body. Threaded cylinders are arranged at the upper end and the lower end of a measuring cylinder in a box, the upper threaded cylinder is connected with an installation cylinder, a sealing gasket and a piston block are arranged in the upper threaded cylinder, the piston block is connected with a toothed plate in a leakage monitoring box through a vertical rod, a flow guide hard pipe is buckled to a fixing buckle, an airtight piston strip is inserted into the sealing gasket at the lower end, and a bubble leakage-proof sealing assembly is installed at the upper end and fixed through a limiting assembly. Toothed plate transmission enables a pointer to indicate on a dial, a pressure sensor and an audible and visual alarm are arranged in the box, a top column touch sensor is triggered to give an alarm, a rapid buckle assembly facilitates assembling and disassembling of a box cover, and the device achieves bubble leakage monitoring and early warning.

Description

Technical Field

[0001] This invention relates to the field of bubble leakage technology in engineering laboratories, specifically to a bubble leakage device. Background Technology

[0002] In sealing performance testing in engineering laboratories, bubble leakage devices are core equipment for evaluating the sealing reliability of pipe joints, seepage prevention structures, and other components. By capturing and measuring the characteristic parameters of leaking bubbles, they provide crucial experimental evidence for optimizing engineering sealing solutions. In existing technologies, bubble leakage devices typically introduce bubbles from the area to be monitored into the metering unit via an inlet pipe, relying on a sealed connection between the inlet pipe and the pipe to be monitored to ensure monitoring accuracy.

[0003] However, the existing sealing connection structure has fundamental limitations: in pursuit of structural simplification, it often uses a fixed rubber sleeve or a single set of threaded seals to connect the inlet pipe to the pipe to be monitored. This type of structure can only be adapted to pipes of a specific diameter, and the sealing performance depends entirely on the initial assembly pressure. When there is a diameter deviation in the pipe to be monitored (such as changing test pieces of different specifications in the experiment), or when the seals experience elastic decay due to repeated disassembly and aging, gaps will inevitably appear at the connection point. This not only causes the air bubbles to be monitored to leak directly from the gaps, resulting in a measured value that is much smaller than the actual leakage, but also allows outside air to enter the inlet pipe through the gaps, mix with the leaked air bubbles, and interfere with the measurement accuracy. Ultimately, this results in the experimental data failing to reflect the true sealing performance, severely reducing the guiding significance of laboratory data for engineering practice. Summary of the Invention

[0004] The purpose of this invention is to provide a bubble leakage device to solve the problems of poor adaptability of the sealing structure of existing bubble leakage devices, easy aging or loosening of the structure during long-term use, resulting in gaps, leakage of the monitored bubbles and mixing with the outside air, and distortion of monitoring data.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bubble leakage device, comprising a transparent liquid storage tank, a stable support, and a leakage monitoring box: The transparent liquid storage tank is placed on the upper end of the stable support. A movable tank cover is attached to the upper end of the transparent liquid storage tank. Several leakage monitoring boxes are fixedly installed on the upper end of the movable tank cover. The two ends of the inside of the movable tank cover are respectively provided with mounting grooves. Quick-clamping components are provided inside the mounting grooves. A limit component is provided at the front end of the movable tank cover. Several mounting cylinders are arranged and installed on the lower surface of the movable tank cover. Several fixing buckles are arranged and installed on the front surface of the inner wall of the transparent liquid storage tank. Several measuring cylinders are arranged in the center inside the transparent liquid storage tank. The outer ends of the upper and lower ends of the measuring cylinders are respectively provided with threaded cylinders, and the outer ends of the upper threaded cylinders are respectively threaded into the inside of the mounting cylinder. The lower end of the measuring cylinder is equipped with a sealing gasket, and a piston block is movably attached to the top of the sealing gasket. A vertical rod is fixedly connected to the center of the upper end of each piston block. The top of each vertical rod extends through the inside of the mounting cylinder to the center of the leakage monitoring box. A toothed plate is fixedly connected to the top of each vertical rod. The fixed buckle has the outer ends of the flow guide tubes arranged and snapped inside. The lower ends of the flow guide tubes are all fixedly connected to airtight piston strips, and the airtight piston strips are inserted into the center of the sealing gasket through the inside of the lower threaded cylinder. The upper ends of the flow guide tubes extend to the upper outer end of the transparent liquid storage tank, and all of them are fixedly installed with bubble anti-leakage sealing components.

[0006] Preferably, a plurality of the mounting cylinders are respectively provided corresponding to a plurality of the leakage monitoring boxes; the outer ends of the lower threaded cylinders are respectively threaded with sealing nuts.

[0007] Preferably, the leakage monitoring box includes a scale fixedly installed on the front surface of the leakage monitoring box and two rotating shafts arranged parallel to each other at the front end inside the leakage monitoring box. A transmission gear plate is fixedly installed on the center of the surface of one rotating shaft, and a linkage gear plate is fixedly installed on the center of the surface of the other rotating shaft. A follower gear plate is also fixedly installed on one side surface of the linkage gear plate.

[0008] Preferably, the outer end of the toothed plate is engaged with one side of the outer end of the transmission toothed disc, and the other side of the outer end of the transmission toothed disc is engaged with the outer end of the linkage toothed disc.

[0009] Preferably, a connecting rod is sleeved at the center of the front surface of the dial, and the rear end of each connecting rod extends to the front end of the leakage monitoring box. A passive gear plate is installed on each connecting rod, and a pointer is fixedly installed on the front surface of each connecting rod, with the pointer corresponding to the front surface of the dial. The outer end surface of the follower gear plate is meshed with the outer end surface of the passive gear plate for transmission.

[0010] Preferably, pressure sensors are installed on the upper surface of the rear end inside the leakage monitoring box, and audible and visual alarms are installed on the upper surface of the rear end inside the leakage monitoring box; connecting plates are connected to the upper surface of the rear end of the toothed plate, and trigger pins are installed on the upper end of each connecting plate, with the upper end of the trigger pins and the lower end of the pressure sensors being opposite each other.

[0011] Preferably, the bubble leak-proof sealing assembly includes a tough sealing cover, a fixing hoop, a sealing inner cover, a leak-proof sealing clamp, and bolts; the tough sealing cover is fixedly connected to the front end surface of the guide tube, a fixing hoop is provided at the front end of the tough sealing cover and sleeved on the outside of the tough sealing cover, a sealing inner cover is fixedly connected to the bottom surface inside the tough sealing cover and extends out of the front end of the guide tube, a leak-proof sealing clamp is tightly attached to the upper surface of the sealing inner cover, and a bolt is installed at the center of the upper end of the leak-proof sealing clamp, with the other end of the bolt extending to the outer perimeter of the tough sealing cover.

[0012] Preferably, the limiting component includes a horizontal plate, an arc-shaped plate, an adjusting handle screw, a clamping and fixing plate, and an elastic adjusting spring; threaded holes are respectively opened on both sides of the front surface of the movable box cover; the horizontal plate is arranged parallel to the front of the movable box cover, and through holes are respectively opened on both sides of the horizontal plate. Adjusting handle screws are respectively fitted inside the through holes, and the rear ends of the adjusting handle screws are respectively threaded into the inside of the threaded holes; the surface of the horizontal plate that is in contact with the movable box cover is respectively connected to the arc-shaped plate, and clamping and fixing plates are respectively arranged inside the arc-shaped plates. The inner surface of the clamping and fixing plates is tightly attached to the outer end surface of the guide tube, and elastic adjusting springs are respectively connected around the outer surface of the clamping and fixing plates. The other end of the elastic adjusting spring is fixedly connected to the inner wall surface of the arc-shaped plate.

[0013] Preferably, the quick-release assembly includes guide posts, a pin plate, a limiting spring, and an operating push plate; guide posts are connected to both sides of the inner wall of the mounting groove, a pin plate is provided in the center of the mounting groove, a movable cover extends from the front end of the pin plate and is inserted into the slot on the upper inner wall of the transparent liquid storage tank, the two rear sides of the pin plate are slidably sleeved on the outer ends of the guide posts, a limiting spring is connected to the two rear sides of the pin plate, the other end of the limiting spring is fixedly connected to the bottom surface of the mounting groove, an operating push plate is fixedly connected to the center of the rear end of the pin plate, and the upper outer end of the movable cover extends from the upper end of the operating push plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention achieves systematic protection through a triple-sealing system of bubble-proof sealing components: The first layer consists of a highly elastic and tough sealing sleeve that wraps around the connection area, automatically filling the connection gap using the material's own elasticity, initially blocking bubble leakage and the intrusion of external air; the second layer, through the mechanical tightening action of the fixing clamp, further compresses the tough sealing sleeve, making it fit more tightly with the guide tube and the outer wall of the external pipe, effectively counteracting the loosening of the seal caused by material aging; the third layer is formed by the cooperation of a sealing inner cover and a leak-proof sealing clamp. The sealing inner cover directly adheres to the inner wall of the external pipe to form a physical barrier, and the leak-proof sealing clamp is adjusted by bolts to accommodate external pipes of different diameters, and can also strengthen the seal with the outer wall of the pipe by compressing the sealing inner cover, forming multiple layers of protection. At the same time, the limiting component stably fixes the guide tube, avoiding sealing failure caused by tube displacement, ensuring that 100% of the bubbles entering the device come from the object to be monitored, fundamentally solving the problem of data distortion caused by unreliable sealing in existing technologies.

[0015] This invention utilizes the displacement of a piston block caused by an air bubble entering a graduated cylinder. This displacement is transmitted via a vertical rod to a gear plate, and then through the motion of a transmission gear plate and a linkage gear plate, the leakage amount is directly displayed on a dial by a pointer. This achieves precise quantification from "whether there is a leak" to "how much is leaking." Furthermore, the array of graduated cylinders corresponds one-to-one with the leakage monitoring box, allowing multiple sets of air bubble sources to be monitored to be connected simultaneously. Each set is independently sealed, driven, and displayed, enabling researchers to compare leakage data from different monitoring points at the same time. This significantly shortens the cycle of multiple experiments and avoids errors caused by repeated experiments, greatly enhancing the scientific validity and persuasiveness of the experimental conclusions—something that existing single-channel, qualitative monitoring devices cannot achieve.

[0016] This invention overcomes the aforementioned limitations through two innovative designs: Regarding the fixing of the guide tube, the elastic adjusting spring of the limiting component automatically extends and retracts according to the outer diameter of the tube. Combined with the contour-following design of the arc-shaped plate, it can adapt to tubes of different specifications while achieving flexible clamping through spring force, avoiding damage to the tube wall from rigid contact. Simultaneously, the adjusting handle screw can precisely control the clamping force to meet the needs of different installation scenarios. Regarding the installation and removal of the cover, the "pin plate + limiting spring" structure of the quick-release component allows for rapid unlocking and locking of the cover simply by pushing the operating plate, eliminating the need to tighten bolts and significantly shortening installation and removal time. Furthermore, the sliding fit between the pin plate and the guide post avoids wear problems in threaded structures, extending the device's service life. This reduces the operational intensity for experimental personnel and lowers equipment maintenance costs, significantly improving the device's practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the internal structure of the transparent liquid storage tank of the present invention; Figure 3 This is a schematic diagram of the measuring cylinder structure of the present invention; Figure 4 This is a schematic diagram of the bubble leak-proof sealing assembly of the present invention; Figure 5 This is a schematic diagram of the limiting component structure of the present invention; Figure 6 This is a further structural schematic diagram of the limiting component of the present invention; Figure 7 This is a schematic diagram of the leakage monitoring box structure of the present invention; Figure 8 This is a further structural schematic diagram of the leakage monitoring box of the present invention; Figure 9 This is a schematic diagram of the quick-release buckle assembly structure of the present invention.

[0018] In the picture: 1. Transparent liquid storage tank; 11. Fixing buckle; 12. Mounting cylinder; 13. Movable tank cover; 2. Stable support; 3. Leakage monitoring box; 31. Dial; 32. Rotating shaft; 33. Transmission gear plate; 34. Linkage gear plate; 35. Follower gear plate; 36. Connecting rod; 37. Passive gear plate; 38. Pointer; 39. Connecting plate; 310. Trigger pin; 311. Pressure sensor; 312. Audible and visual alarm; 4. Measuring cylinder; 41. Threaded cylinder; 42. Sealing nut; 43. Sealing gasket; 44. Piston block; 45. Vertical rod; 46. Gear plate; 5. Flow guide tube; 51. Airtight piston strip; 6. Bubble-proof sealing assembly; 61. Tough sealing sleeve; 62. Fixing clamp; 63. Sealing inner cover; 64. Leak-proof sealing clamp; 65. Bolt; 7. Limiting component; 71. Horizontal plate; 72. Arc plate; 73. Adjusting handle screw; 74. Clamping fixing plate; 75. Elastic adjusting spring; 8. Quick-release buckle assembly; 81. Guide post; 82. Pin plate; 83. Limit spring; 84. Operating push plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-9As shown, the present invention provides a technical solution: a bubble leakage device, which consists of a transparent liquid storage tank 1, a stable support 2 and a leakage monitoring box 3. The transparent liquid storage tank 1 is placed on the upper end of the stable support 2, and its upper end is attached to a movable box cover 13 with several leakage monitoring boxes 3. The box cover is provided with a quick-release buckle assembly 8 and a limiting assembly 7. The lower end has an installation cylinder 12, and the front end of the inner wall of the box has a fixing buckle 11.

[0021] Measuring cylinders 4 are arranged in the center of the box. Threaded cylinders 41 are located at the upper and lower ends of measuring cylinders 4. The upper threaded cylinder 41 is threadedly connected to the mounting cylinder 12. A sealing gasket 43 is located at the lower end of the measuring cylinder 4, and a piston block 44 is located above it. The piston block 44 is connected to the toothed plate 46 inside the leakage monitoring box 3 via a vertical rod 45. A flow guide tube 5 is snapped into the fixing buckle 11. The lower end of the airtight piston strip 51 is inserted into the center of the sealing gasket 43, and the upper end extends out of the box and is fitted with a bubble-proof sealing assembly 6.

[0022] The mounting cylinder 12 corresponds one-to-one with the leakage monitoring box 3, and the lower threaded cylinder 41 has a sealing nut 42 on the outside. The leakage monitoring box 3 includes a dial 31 and two rotating shafts 32. The rotating shafts 32 have a transmission gear 33, a linkage gear 34 and a follower gear 35. The gear plate 46 meshes with the transmission gear 33, and the transmission gear 33 meshes with the linkage gear 34. The rear end of the dial 31 connecting rod 36 is equipped with a passive gear 37, and the front pointer 38 is in contact with the dial 31. The follower gear 35 meshes with the passive gear 37. The box also contains a pressure sensor 311 and an audible and visual alarm 312. The gear plate 46 is connected to the trigger pin 310 through the connecting plate 39, which is opposite to the pressure sensor 311.

[0023] The bubble leak prevention sealing assembly 6 includes a tough sealing cover 61, a fixing hoop 62, etc. The limiting assembly 7 includes a horizontal plate 71, an arc plate 72, etc., for fixing the flow guide rigid pipe 5. The quick snap assembly 8 includes a guide post 81, a pin plate 82, etc., to facilitate the loading and unloading of the box cover. The bubble leakage scale indication and audible and visual alarm are realized through mechanical transmission, which has both good sealing performance and convenient operation.

[0024] according to Figure 2 and Figure 3 As shown, the measuring cylinder 4 is the core functional component of the bubble leakage device for bubble monitoring and signal transmission. It is arranged in an array in the center of the transparent liquid storage tank 1. The threaded cylinders 41 at the upper and lower outer ends of the measuring cylinder 4 have both connection and sealing functions: the upper threaded cylinder 41 is threadedly connected to the mounting cylinder 12 at the lower end of the movable cover 13 to achieve a stable assembly of the measuring cylinder 4 and the main body of the device. After the flow guide tube 5 is fitted onto the lower threaded cylinder 41, the tightening of the sealing nut 42 can form a multi-seal structure to prevent liquid from leaking from the connection gap, while ensuring the coaxiality of the flow guide tube 5 and the measuring cylinder 4, and ensuring the stability of the liquid flow path.

[0025] The sealing gasket 43 and piston block 44 inside the measuring cylinder 4 constitute a dynamic monitoring unit: the sealing gasket 43 can prevent liquid from seeping through the gap at the lower end, ensuring that a closed space is formed inside the measuring cylinder 4; when an air bubble enters the measuring cylinder 4 through the guide tube 5, the change in air bubble displacement pushes the piston block 44 to move up and down along the inner wall of the measuring cylinder, converting the volume change caused by the air bubble into mechanical displacement. The upright rod 45 at the upper end of the piston block 44 serves as a force transmission medium, accurately transmitting the displacement signal to the toothed plate 46 inside the leakage monitoring box 3, thereby triggering the subsequent scale indication and audible and visual alarm mechanism, realizing the quantitative monitoring and early warning response of air bubble leakage. In addition, the parallel arrangement of multiple measuring cylinders 4 can simultaneously and independently detect air bubble leakage at different monitoring points, meeting the functional requirements of multiple sets of control experiments.

[0026] according to Figure 2 and Figure 4 As shown, the bubble leak prevention sealing assembly 6 is a key component in the bubble leakage device that ensures sealing performance and prevents abnormal bubble leakage and external interference. It mainly consists of a tough sealing cover 61, a fixing hoop 62, a sealing inner cover 63, a leak prevention sealing clamp 64, and bolts 65, and is installed on the front end surface of the guide tube 5.

[0027] The flexible sealing sleeve 61 is made of a resilient material. On the one hand, it can tightly wrap the connection between the front end of the flow guide tube 5 and the external pipeline to be monitored, using its elasticity to compensate for the connection gap and initially prevent air bubbles from leaking from the connection gap or outside air from mixing in. On the other hand, its flexibility can adapt to the slight displacement of the connection, avoiding sealing failure caused by rigid connection. The fixing clamp 62 is sleeved on the outside of the flexible sealing sleeve 61. By tightening, the flexible sealing sleeve 61 can be further compressed, enhancing its tightness with the flow guide tube 5 and the external pipeline, strengthening the primary sealing effect, and preventing the flexible material from loosening due to aging after long-term use.

[0028] The inner sealing cover 63 is fixed to the bottom surface inside the tough sealing cover 61 and extends out to the front end of the guide tube 5, forming a double-layer sealing structure. It is directly attached to the inner wall of the external pipe, which can intercept trace air bubbles that may penetrate the tough sealing cover 61, and guide the air bubbles to enter the guide tube 5 accurately, avoiding diversion and affecting the monitoring accuracy. The leak-proof sealing clamp 64 is tightly attached to the upper surface of the inner sealing cover 63. The clamping force of the clamp on the inner sealing cover 63 can be adjusted by turning the bolts 65. It can adapt to external pipes of different diameters and can also form a tight seal with the outer wall of the external pipe by squeezing the inner sealing cover 63, forming a third leak-proof barrier. This ensures that the air bubbles entering the guide tube 5 all come from the object to be monitored, providing a reliable pre-sealing guarantee for the accurate monitoring of the measuring cylinder 4 and the leakage monitoring box 3.

[0029] according to Figure 5 and Figure 6As shown, the limiting component 7 is a key component in the bubble leakage device used to fix the flow guide tube 5 and ensure its positional stability. It consists of a horizontal plate 71, an arc plate 72, an adjusting handle screw 73, a clamping and fixing plate 74, and an elastic adjusting spring 75, and is located at the front end of the movable box cover 13.

[0030] The threaded holes on both sides of the front surface of the movable cover 13 engage with the adjusting handle screws 73 in the through holes on both sides of the horizontal plate 71. By rotating the screws, the distance between the horizontal plate 71 and the movable cover 13 can be adjusted, thereby controlling the clamping force and adjusting the tightness of the guide tube 5 to meet the needs of different installation or maintenance scenarios. The arc-shaped plate 72 connected to the surface of the horizontal plate 71 has an arc design that can fit the cylindrical outer surface of the guide tube 5, providing a suitable contact space for clamping and avoiding unstable fixation due to mismatch of contact surfaces.

[0031] The clamping and fixing plate 74 inside the arc-shaped plate 72 is directly and tightly attached to the outer end surface of the guide tube 5. The physical clamping restricts the radial and axial displacement of the tube, preventing it from shifting during device operation or external vibration. This ensures the precise alignment of the airtight piston strip 51 and the sealing gasket 43, guaranteeing sealing performance. The elastic adjusting spring 75 between the clamping and fixing plate 74 and the inner wall of the arc-shaped plate 72 plays a buffering and self-adaptive role. On the one hand, it can compensate for the slight difference in the outer diameter of the tube through elasticity, adapting to different specifications of the guide tube 5. On the other hand, it can absorb the impact force generated by vibration, avoiding damage to the tube caused by rigid clamping, while maintaining a stable clamping force. Through the adjustable clamping structure, the position of the guide tube 5 is fixed, ensuring the stability of the bubble and liquid transmission path, while also having a certain degree of adaptability and protection, providing reliable structural support for the accurate monitoring of the device.

[0032] according to Figure 7 and Figure 8 As shown, the leak monitoring box 3 is the core component of the bubble leak device for quantitative monitoring and early warning of bubble leaks. It consists of a dial 31, two parallel rotating shafts 32, a transmission gear 33, a linkage gear 34, a follower gear 35, a connecting rod 36, a passive gear 37, a pointer 38, a connecting plate 39, a trigger pin 310, a pressure sensor 311, and an audible and visual alarm 312. It is fixedly installed on the upper end of the movable box cover 13 and corresponds one-to-one with the mounting cylinder 12.

[0033] Two rotating shafts 32 provide mounting and rotational support for the gear disc. One of the shafts 32 has a transmission gear disc 33 that meshes with the outer end of the gear plate 46, converting the linear motion of the gear plate 46 into its own rotational motion. This rotation, through meshing with the other side's linkage gear disc 34, drives the linkage gear disc 34 and its fixed follower gear disc 35 to rotate synchronously, achieving motion transmission and direction conversion. The follower gear disc 35 meshes with the passive gear disc 37, driving the passive gear disc 37 and its connected connecting rod 36 to rotate. This causes the pointer 38 at the front end of the connecting rod 36 to rotate on the scale 31, converting the mechanical motion caused by bubble leakage into a clear scale indication, facilitating the reading of the leakage amount by experimental personnel.

[0034] In addition, the trigger pin 310 connected to the rear end of the toothed plate 46 via the connecting plate 39 will move synchronously with the toothed plate 46. When the amount of bubble leakage reaches the set threshold, the upper end of the trigger pin 310 contacts the pressure sensor 311. The pressure sensor 311 converts the pressure signal into an electrical signal, triggering the sound and light alarm 312 inside the leakage monitoring box 3 to work. Through the dual prompts of sound and light, timely early warning of bubble leakage is achieved.

[0035] The leak monitoring box 3 combines mechanical transmission with sensor alarms, which can accurately quantify the amount of bubble leakage and provide a rapid warning when the leakage exceeds the limit.

[0036] according to Figure 9 As shown, the quick-release buckle assembly 8 is a key component in the bubble leakage device that enables quick loading and unloading and secure connection between the movable cover 13 and the transparent liquid storage tank 1. It consists of a guide post 81, a pin plate 82, a limit spring 83, and an operating push plate 84, and is installed in the mounting grooves at both ends inside the movable cover 13.

[0037] The guide posts 81 on both sides of the inner wall of the mounting groove provide sliding guidance for the pin plate 82, ensuring that the pin plate 82 maintains a stable trajectory during its back-and-forth movement and preventing displacement that could lead to buckle failure. The front end of the pin plate 82 extends into a movable cover 13, which is inserted into a slot on the upper inner wall of the transparent liquid storage tank 1. The movable cover 13 is mechanically locked to the tank body through physical insertion, preventing the cover from accidentally loosening during the experiment.

[0038] The limiting springs 83 connected to both sides of the rear end of the pin plate 82 have an elastic reset function. In its natural state, the spring force pushes the pin plate 82 to maintain the locked state of the insertion slot, ensuring the sealing and stability of the connection. When it is necessary to open the box cover, the pin plate 82 can be pulled backward by operating the push plate 84 to compress the limiting springs 83 and disengage it from the slot, thus achieving quick unlocking. The operating push plate 84 is fixed to the center of the rear end of the pin plate 82 and extends to the upper end of the movable box cover 13, providing a convenient operating fulcrum for the experimenter. It is easy to complete the locking and unlocking operation of the buckle with minimal effort. Through the combination of spring force and mechanical insertion, the connection between the movable box cover 13 and the transparent liquid storage tank 1 is ensured, and the box cover can be quickly installed and removed. This facilitates the inspection, replacement, and liquid filling of the internal components of the device during the experiment, improving the operating efficiency and practicality of the device.

[0039] The overall effect achieved by the organization is as follows: The external bubble source to be monitored is connected to the device through the bubble leak-proof sealing assembly 6. The tough sealing cover 61 is made of highly elastic material and tightly wraps the connection between the front end of the guide tube 5 and the external pipe. It automatically compensates for the connection gap by its own elasticity, preventing abnormal leakage of bubbles from the gaps or interference from the ingress of outside air that could interfere with the monitoring data. The fixing hoop 62, which is fitted on the outside of the tough sealing cover 61, tightens the cover and further compresses it to make it fit more tightly with the guide tube 5 and the outer wall of the external pipe. This prevents the seal from loosening due to material aging after long-term use. The inner sealing cover 6 is fixed to the bottom surface of the tough sealing cover 61. The front end of the guide tube 5 extends out and directly fits against the inner wall of the external pipe to form a double-layer sealing barrier. This barrier can not only intercept trace amounts of air bubbles that may penetrate the tough sealing sleeve 61, but also guide the air bubbles into the guide tube 5 along a fixed path, preventing air bubble diversion from affecting monitoring accuracy. The leak-proof sealing clamps 64 around the upper surface of the sealing inner cover 63 can adjust the clamping force by turning the bolts 65, which can adapt to external pipes of different diameters. They can also form a third seal by squeezing the sealing inner cover 63 to make it fit tightly against the outer wall of the external pipe, ensuring that the air bubbles entering the guide tube 5 come entirely from the object to be monitored, providing a pure air bubble source for subsequent monitoring. The outer end of the guide tube 5 is secured by a fixing buckle 11 at the front end of the inner wall of the transparent liquid storage tank 1, and further reinforced by a limiting component 7 at the front end of the movable tank cover 13. The threaded holes on both sides of the front surface of the movable tank cover 13 are threadedly connected to the adjusting handle screws 73 in the through holes on both sides of the horizontal plate 71. By rotating the adjusting handle screws 73, the distance between the horizontal plate 71 and the movable tank cover 13 can be precisely adjusted, thereby controlling the clamping force. The arc-shaped plate 72 connected to the surface of the horizontal plate 71, due to its arc design, perfectly fits the cylindrical outer surface of the guide tube 5, providing a suitable contact space for clamping and avoiding instability caused by mismatched contact surfaces. The interior of the arc-shaped plate 72... The clamping and fixing plate 74 is directly and tightly attached to the outer end surface of the guide tube 5. By physically clamping, it restricts the radial and axial displacement of the tube, preventing it from shifting during device operation or external vibration. This ensures that the airtight piston strip 51 at the lower end of the guide tube 5 is accurately inserted into the center of the sealing gasket 43 inside the measuring cylinder 4. The elastic adjusting spring 75 between the clamping and fixing plate 74 and the inner wall of the arc plate 72 plays a buffering and self-adaptive role. On the one hand, it can compensate for the slight difference in the outer diameter of the guide tube 5 through elasticity, adapting to tubes of different specifications. On the other hand, it can absorb the impact force generated by vibration, avoiding damage to the tube caused by rigid clamping, and ensuring the stability of the bubble and liquid transmission path.Bubbles enter the measuring cylinders 4 arranged in the center of the transparent liquid storage tank 1 through the guide tube 5. The threaded cylinders 41 at the upper and lower ends of the measuring cylinder 4 serve as both connections and seals. The upper threaded cylinder 41 is threadedly connected to the mounting cylinder 12 on the lower surface of the movable tank cover 13, thus ensuring a stable assembly between the measuring cylinder 4 and the main body of the device. After the guide tube 5 is fitted onto the lower threaded cylinder 41, the tightening of the sealing nut 42 forms a multi-layer sealing structure to prevent liquid leakage from the connection gaps and ensure the coaxiality of the guide tube 5 and the measuring cylinder 4, guaranteeing the stability of the liquid flow path. The sealing gasket 43 at the lower end of the measuring cylinder 4 can block the liquid flow. The air permeates through the gap at the bottom, ensuring that a closed space is formed inside the measuring cylinder 4. When the air bubble enters the measuring cylinder 4 through the guide tube 5, the volume changes due to the squeezing of the air bubble, pushing the piston block 44 directly above the sealing gasket 43 to move axially along the inner wall of the measuring cylinder, converting the volume change caused by the air bubble into a precise mechanical displacement. The upright rod 45, which is fixedly connected to the center of the upper end of the piston block 44, serves as a force transmission medium. The top end extends through the mounting cylinder 12 to the center of the inside of the leakage monitoring box 3 and is fixedly connected to the toothed plate 46, accurately transmitting the displacement signal of the piston block 44 to the toothed plate 46, so that the toothed plate 46 moves synchronously longitudinally with the change in the amount of air bubble. The leakage monitoring box 3 is fixedly installed on the upper end of the movable box cover 13 and corresponds one-to-one with the mounting cylinder 12. The two parallel rotating shafts 32 inside provide mounting and rotation support for the gear plate. The transmission gear plate 33 in the center of the surface of one of the rotating shafts 32 meshes with the outer end of the gear plate 46, converting the linear motion of the gear plate 46 into its own rotational motion. The other side of the outer end of the transmission gear plate 33 meshes with the linkage gear plate 34 in the center of the surface of the other rotating shaft 32, driving the linkage gear plate 34 and the follower gear plate 35 fixed thereto to rotate synchronously, realizing motion transmission and direction conversion. The outer end surface of the follower gear plate 35 meshes with the passive gear plate 37 on the connecting rod 36 extending from the rear end of the scale 31, driving the passive gear plate 37 and the connecting rod 36 to rotate, causing the connecting rod to rotate. The pointer 38, fixed on the front surface of the 36, rotates on the front surface of the dial 31, converting the mechanical motion caused by bubble leakage into an intuitive scale indication, making it easy for experimenters to directly read the leakage amount. At the same time, the pressure sensor 311 on the upper rear surface of the leak monitoring box 3 is set opposite to the trigger pin 310 connected to the upper rear surface of the toothed plate 46 via the connecting plate 39. When the bubble leakage amount reaches the set threshold, the trigger pin 310 rises with the toothed plate 46 to contact the pressure sensor 311. The pressure sensor 311 converts the pressure signal into an electrical signal, triggering the audible and visual alarm 312 on the rear surface of the leak monitoring box 3 to work, providing timely early warning of bubble leakage through sound and light prompts.Furthermore, the parallel arrangement of multiple measuring cylinders 4 allows for independent detection of bubble leakage at different monitoring points simultaneously, meeting the functional requirements of multiple control experiments. The quick-release fasteners 8 within the mounting slots at both ends of the movable cover 13 facilitate device maintenance. Guide posts 81 on both sides of the mounting slot provide sliding guidance for the pin plate 82, ensuring stable movement. The front end of the pin plate 82 extends out of the movable cover 13 and inserts into a slot on the upper inner wall of the transparent liquid storage tank 1, achieving mechanical locking between the cover and the tank body through physical insertion. Limiting springs 83 on both rear sides naturally... In the locked state, the push pin plate 82 is kept in the locked state to ensure the sealing and stability of the connection. When it is necessary to open the box cover, the push plate 84 extending from the upper end of the movable box cover 13 is used to pull the push pin plate 82 backward, compressing the limit spring 83 to disengage it from the slot, which can quickly unlock the device and facilitate the maintenance of the internal components. Through the combination of mechanical transmission and sensor alarm, it can not only achieve accurate quantitative monitoring of bubble leakage, but also provide rapid early warning when leakage exceeds the limit. At the same time, it has good sealing and convenient operation, providing reliable technical support for bubble leakage experiments in the laboratory.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bubble leakage device, comprising a transparent liquid storage tank (1), a stabilizing bracket (2), and a leakage monitoring box (3), characterized in that: The transparent liquid storage tank (1) is placed on the upper end of the stable support (2). A movable cover (13) is attached to the upper end of the transparent liquid storage tank (1). Several leakage monitoring boxes (3) are fixedly installed on the upper end of the movable cover (13). Installation grooves are opened at both ends of the interior of the movable cover (13). Quick-release fasteners (8) are provided inside the installation grooves. A limit component (7) is provided at the front end of the movable cover (13). Several installation cylinders (12) are arranged and installed on the lower surface of the movable cover (13). Several fixing buckles (11) are arranged and installed on the front surface of the inner wall of the transparent liquid storage tank (1). Several measuring cylinders (4) are arranged in the center inside the transparent liquid storage tank (1). The outer ends of the upper and lower ends of the several measuring cylinders (4) are respectively provided with threaded cylinders (41), and the outer ends of the upper threaded cylinders (41) are respectively threaded into the inside of the mounting cylinder (12). The measuring cylinder (4) is equipped with a sealing gasket (43) at the lower end of the interior. A piston block (44) is movably attached to the top of the sealing gasket (43). A vertical rod (45) is fixedly connected to the center of the upper end of the piston block (44). The top of the vertical rod (45) extends through the interior of the mounting cylinder (12) to the center of the interior of the leakage monitoring box (3). A toothed plate (46) is fixedly connected to the top of each vertical rod (45). The fixed buckle (11) has the outer ends of the flow guide tubes (5) arranged and snapped inside. The lower ends of the flow guide tubes (5) are all fixedly connected to airtight piston strips (51), and the airtight piston strips (51) are inserted into the center of the sealing gasket (43) through the interior of the lower threaded cylinder (41). The upper ends of the flow guide tubes (5) extend to the upper outer end of the transparent liquid storage tank (1), and all are fixedly installed with bubble leak-proof sealing components (6).

2. The bubble leakage device according to claim 1, characterized in that: Several mounting cylinders (12) are respectively provided in correspondence with several leakage monitoring boxes (3); the outer ends of the lower threaded cylinders (41) are respectively threaded with sealing nuts (42).

3. The bubble leakage device according to claim 1, characterized in that: The leakage monitoring box (3) includes a dial (31) fixedly installed on the front surface of the leakage monitoring box (3) and two rotating shafts (32) arranged in parallel at the front end inside the leakage monitoring box (3). A transmission gear plate (33) is fixedly installed in the center of the surface of one of the rotating shafts (32), and a linkage gear plate (34) is fixedly installed in the center of the surface of the other rotating shaft (32). A follower gear plate (35) is also fixedly installed on one side surface of the linkage gear plate (34).

4. The bubble leakage device according to claim 3, characterized in that: The outer end of the toothed plate (46) is engaged with one side of the outer end of the transmission toothed plate (33) for transmission, and the other side of the outer end of the transmission toothed plate (33) is engaged with the outer end of the linkage toothed plate (34) for transmission.

5. The bubble leakage device according to claim 3, characterized in that: A connecting rod (36) is respectively fitted in the center of the front surface of the dial (31). The rear end of the connecting rod (36) extends to the front end of the leakage monitoring box (3) and a passive gear plate (37) is installed thereon. A pointer (38) is fixedly installed on the front surface of the connecting rod (36) and the pointer (38) is attached to the front surface of the dial (31). The outer end surface of the follower gear plate (35) is meshed with the outer end surface of the passive gear plate (37) for transmission.

6. The bubble leakage device according to claim 3, characterized in that: Pressure sensors (311) are installed on the upper surface of the rear end of the leak monitoring box (3), and audible and visual alarms (312) are installed on the upper surface of the rear end of the leak monitoring box (3). Connecting plates (39) are connected to the upper surface of the rear end of the toothed plate (46). Trigger pins (310) are installed on the upper end of the connecting plates (39), and the upper end of the trigger pins (310) and the lower end of the pressure sensors (311) are arranged opposite to each other.

7. The bubble leakage device according to claim 1, characterized in that: The bubble leak-proof sealing assembly (6) includes a tough sealing cover (61), a fixing hoop (62), a sealing inner cover (63), a leak-proof sealing clamp (64), and bolts (65). The tough sealing cover (61) is fixedly connected to the front end surface of the flow guide tube (5). A fixing hoop (62) is provided at the front end of the tough sealing cover (61) and sleeved on the outside of the tough sealing cover (61). A sealing inner cover (63) is fixedly connected to the bottom surface inside the tough sealing cover (61), and the sealing inner cover (63) extends out of the front end of the flow guide tube (5). A leak-proof sealing clamp (64) is tightly attached to the upper surface of the sealing inner cover (63). Bolts (65) are installed at the center of the upper end of the leak-proof sealing clamp (64), and the other end of the bolts (65) extends to the outer perimeter of the tough sealing cover (61).

8. The bubble leakage device according to claim 1, characterized in that: The limiting component (7) includes a horizontal plate (71), an arc plate (72), an adjusting handle screw (73), a clamping fixing plate (74), and an elastic adjusting spring (75); threaded holes are respectively opened on both sides of the front surface of the movable box cover (13); the horizontal plate (71) is arranged parallel to the front of the movable box cover (13), and through holes are respectively opened on both sides of the horizontal plate (71), and adjusting handle screws (73) are respectively fitted inside the through holes, and the rear ends of the adjusting handle screws (73) are respectively threaded. Inside the threaded hole; the surface of the horizontal plate (71) that is in contact with the movable box cover (13) is connected to an arc plate (72), and a clamping and fixing plate (74) is provided inside the arc plate (72). The inner surface of the clamping and fixing plate (74) is tightly attached to the outer end surface of the guide tube (5). Elastic adjusting springs (75) are connected around the outer surface of the clamping and fixing plate (74), and the other end of the elastic adjusting spring (75) is fixedly connected to the inner wall surface of the arc plate (72).

9. The bubble leakage device according to claim 1, characterized in that: The quick-release buckle assembly (8) includes a guide post (81), a pin plate (82), a limiting spring (83), and an operating push plate (84). The guide post (81) is connected to both sides of the inner wall of the mounting groove. The pin plate (82) is set in the center of the mounting groove. The movable cover (13) extends from the front end of the pin plate (82) and is inserted into the slot on the upper inner wall of the transparent liquid storage tank (1). The two rear sides of the pin plate (82) are slidably sleeved on the outer ends of the guide post (81). The two rear sides of the pin plate (82) are connected to the limiting spring (83). The other end of the limiting spring (83) is fixedly connected to the bottom surface of the mounting groove. The operating push plate (84) is fixedly connected to the center of the rear end of the pin plate (82). The upper outer end of the movable cover (13) extends from the upper end of the operating push plate (84).

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