Intelligent helium leak detection, recovery and purification equipment

Abstract

The utility model provides a kind of intelligent helium leak detection recycling purification equipment, including rack, rotatable switch disc is arranged on rack, multiple loading units are fixedly connected on switch disc, and loading unit is used to place leak detection workpiece;Rack is provided with placement station, test station and recycling station;Rack is also provided with the drive rod that can be telescopic along vertical direction, the movable end of drive rod is fixedly connected with operation table, and operation table is respectively provided with first protruding part, second protruding part and third protruding part corresponding placement station, test station and recycling station;Loading unit includes lower shell and movable upper cover, and upper cover and lower shell form sealed space, and helium concentration detector is arranged on lower shell.By setting switch disc and multiple stations (placement, test, recycling), the original serial detection process is decomposed into parallel operation that can be carried out in different stations simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of leak detection equipment technology, specifically to an intelligent helium leak detection, recovery, and purification device. Background Technology

[0002] In modern industrial production, especially in the manufacturing of products with extremely high sealing requirements, helium leak detection is widely used as a precise and efficient detection technology. However, existing leak detection equipment faces significant efficiency challenges in actual production.

[0003] Existing helium leak detection equipment typically tends to complete multiple operations at a single workstation. This means that everything from workpiece placement, vacuuming, helium filling, and detection to subsequent helium recovery and even purification may be concentrated at one point. While this "one-stop" design appears integrated, it actually introduces serious efficiency problems. For example, vacuuming and detection processes require significant time. Before the required vacuum level is reached, subsequent helium filling and detection steps cannot be performed, and the workpiece must passively wait at the workstation. This forced sequential processing significantly extends the detection cycle of individual workpieces, leading to wasted time and limited production capacity on the production line. When a workstation is occupied for an extended period by a time-consuming operation (such as deep vacuuming), even if other workpieces are ready, they must wait in line, significantly hindering overall production efficiency.

[0004] Furthermore, when the production line needs to process parts of different sizes, operators must frequently change matching sealing components (such as sealing rings or clamps). This frequent changeover not only consumes a lot of valuable time and seriously affects the changeover efficiency and flexibility of the production line, but also increases the complexity of operation. Improper installation can easily lead to poor sealing, which in turn affects the accuracy of testing and ultimately drags down the overall production efficiency. Utility Model Content

[0005] The present invention aims to provide an intelligent helium leak detection, recovery and purification device to solve the problems of low efficiency and cumbersome and time-consuming changeover operations in existing helium leak detection devices.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An intelligent helium leak detection, recovery, and purification device includes a frame.

[0008] The frame is equipped with a rotatable switching disk, and multiple loading units are fixedly connected to the switching disk. The loading units are used to place leak detection workpieces.

[0009] The frame is provided with a placement station, a testing station and a recycling station; the frame is also provided with a drive rod that can extend and retract in the vertical direction, and the movable end of the drive rod is fixedly connected to an operating table. The operating table is provided with a first protrusion, a second protrusion and a third protrusion respectively corresponding to the placement station, the testing station and the recycling station.

[0010] The loading unit includes a lower housing and a movable upper cover plate. The upper cover plate and the lower housing form a sealed space. A helium concentration detector is installed on the lower housing. The loading unit also includes a connecting gas pipe. A first one-way valve and a second one-way valve are installed on the connecting gas pipe. The first one-way valve and the second one-way valve have opposite conduction directions.

[0011] The first protrusion, the second protrusion, and the third protrusion are each provided with a gas supply pipeline and a gas extraction pipeline that can communicate with the first one-way valve and the second one-way valve.

[0012] A sealing rubber ring is detachably connected to the outside of the connecting air tube via a quick-release assembly.

[0013] Preferably, the quick-release assembly includes a rotating pin fixed to the connecting air pipe, a snap-fit ​​block is oscillatingly provided on the rotating pin, one end of the snap-fit ​​block is provided with a flange, and a fixing groove corresponding to the flange is provided on the sealing rubber ring.

[0014] Preferably, a push-out spring is provided between the snap-fit ​​block and the connecting air pipe.

[0015] Preferably, a vacuum valve is also provided on the connecting air pipe.

[0016] Preferably, a gas storage tank is fixedly connected to the third protrusion, and the gas storage tank is connected to the gas extraction pipeline.

[0017] Preferably, the upper cover plate is provided with an adhesive strip on the side facing the lower housing.

[0018] Compared with the prior art, the present invention has the following significant advantages:

[0019] 1. Parallel Processing, Doubled Efficiency: By setting up a switching panel and multiple workstations (placement, testing, and recycling), the originally sequential inspection process is broken down into parallel operations that can be performed simultaneously at different workstations. While one workpiece is undergoing time-consuming vacuuming and testing at the testing station, the operator can load a new workpiece at the placement station, and simultaneously, another workpiece that has completed testing can undergo helium recovery at the recycling station. Each process operates independently, greatly shortening the average inspection cycle for a single product and significantly improving overall production efficiency.

[0020] 2. Quick Changeover, High Flexibility: Through innovative quick-release component design, operators can quickly and easily replace sealing rubber rings to fit workpieces of different sizes, without the need for complex tools or lengthy adjustments. This significantly reduces production line downtime during product switching, improving production flexibility and the ability to handle fluctuating orders.

[0021] 3. High degree of automation and reduced error rate: The lifting and lowering of the operating table driven by the drive rod and the rotation of the switching plate can be completed automatically by the central control system, realizing the automatic flow and operation docking of workpieces between various workstations, reducing manual intervention, ensuring the accuracy and consistency of operation, and avoiding detection errors caused by human error. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional view of the loading unit in one embodiment of the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of part A.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Rack;

[0028] 2. Loading unit; 21. Lower housing; 22. Upper cover plate; 221. Adhesive strip; 23. Helium concentration detector;

[0029] 24. Connecting air tube; 241. Rotating pin; 242. Snap-fit ​​block; 243. Flange; 244. Ejection spring; 245. Vacuum valve;

[0030] 25. First check valve; 26. Second check valve;

[0031] 3. Drive lever; 31. Control panel; 32. First protrusion; 33. Second protrusion; 34. Third protrusion; 341. Gas tank;

[0032] 4. Sealing rubber ring; 41. Fixing groove;

[0033] 5. Switch disk. Detailed Implementation

[0034] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0035] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0036] As attached Figure 1-3 As shown, the intelligent helium leak detection, recovery, and purification equipment provided by this utility model has a main structure of a stable frame 1. A switching disk 5, which can rotate around a central axis, is installed at the center of the frame 1. This switching disk 5 is the core component for realizing the transfer of workpieces between different workstations. In this embodiment, the switching disk 5 has a polygonal, evenly distributed design, on which three (or more) loading units 2 are uniformly fixed. Each loading unit 2 acts as an independent "detection chamber," used to accommodate and seal the workpiece to be leak-detected.

[0037] On rack 1, along the rotation path of switching disk 5, three functionally independent workstations are divided: placement workstation, testing workstation, and recycling workstation.

[0038] The equipment also includes a drive rod 3 driven by a servo motor or cylinder, which precisely controls the vertical lifting and lowering movement of the operating table 31, whose movable end is fixed. The operating table 31 is the actuator that enables functional docking with the loading unit 2. Depending on the function of the workstation, it is equipped with a first protrusion 32 (corresponding to the placement station), a second protrusion 33 (corresponding to the testing station), and a third protrusion 34 (corresponding to the retrieval station). The first protrusion 32, the second protrusion 33, and the third protrusion 34 on the operating table 31 are all equipped with gas supply lines and gas extraction lines that can communicate with the first one-way valve 25 and the second one-way valve 26 on the loading unit 2. The gas supply lines can selectively supply helium or air.

[0039] Each loading unit 2 consists of a lower housing 21 and an upper cover 22. The workpiece is placed inside the lower housing 21. After the upper cover 22 is closed, a sealed space is formed between it and the lower housing 21 via an adhesive strip 221 along its edge. A high-precision helium concentration detector 23 is built into the lower housing 21. Furthermore, the loading unit 2 is equipped with a connecting gas pipe 24, which passes through the housing and connects to the sealed space, extending to a convenient docking position. A first one-way valve 25 and a second one-way valve 26 are installed on the pipe, opening in opposite directions to control the one-way injection and extraction of gas, respectively. When the operating platform 31 descends to a set height, the gas supply and extraction pipes on the first protrusion 32, the second protrusion 33, and the third protrusion 34 can connect with the first one-way valve 25 and the second one-way valve 26. When these connections are disconnected, the first one-way valve 25 and the second one-way valve 26 automatically seal the gas in the connecting gas pipe 24, preventing gas from flowing out of the loading unit 2 and preventing external gas from flowing into the loading unit 2.

[0040] To enable rapid replacement, the sealing rubber ring 4, which directly contacts the workpiece, is mounted on the outside of the connecting air pipe 24 via a quick-release assembly. This quick-release assembly includes a rotating pin 241 fixed to the connecting air pipe 24, on which a snap-fit ​​block 242 is oscillatingly mounted. One end of the snap-fit ​​block 242 has a flange 243 that can snap into a pre-set fixing groove 41 of the sealing rubber ring 4. A push-out spring 244 can also be provided between the snap-fit ​​block 242 and the connecting air pipe 24. During replacement, simply moving the snap-fit ​​block 242 overcomes the spring force, helping the flange 243 disengage from the fixing groove 41, thus quickly removing the original size sealing rubber ring 4 and replacing it with a new size sealing rubber ring 4 for a good fit to the workpiece.

[0041] Workflow Description:

[0042] Step 1: Workpiece Placement and System Startup

[0043] At the placement station, the operator places the first workpiece to be leak-tested into the lower housing 21 of an empty loading unit 2, aligns the opening of the workpiece with the connecting air pipe 24, and ensures that the sealing rubber ring 4 is tightly abutted against the opening of the workpiece. Finally, the upper cover plate 22 is placed on top.

[0044] At this time, the switching disk 5 is stationary, and the operating console 31 is also in the initial downward position.

[0045] Step 2: Switch to the testing station and begin testing.

[0046] The central controller issues a command, and the switching disk 5 rotates 120 degrees to transfer the loading unit 2 containing the workpiece from the placement station to the testing station.

[0047] Meanwhile, an empty loading unit 2 is transferred to the placement station to await the next workpiece.

[0048] When the loading unit 2 arrives at the test station, the drive rod 3 descends, causing the operating table 31 to move downwards, so that the second protrusion 33 on it is precisely connected to the port of the connecting air pipe 24 of the loading unit 2 located at the test station.

[0049] After docking, the evacuation pipe on the second protrusion 33 begins to evacuate the sealed space through the second one-way valve 26. To protect the testing instrument and optimize the process, a vacuum valve 245 can also be installed on the connecting air pipe 24 of the loading unit 2. This vacuum valve 245 is set with a threshold value; it will only close when the vacuum level in the sealed space reaches the preset value, thereby separating the sealed space from the workpiece to be tested, making them independent of each other.

[0050] Once the required vacuum level for testing is reached, the evacuation stops. The gas supply line on the second protrusion 33 then fills the workpiece with helium gas at the specified pressure through the first one-way valve 25.

[0051] The helium concentration detector 23 inside the loading unit 2 begins to monitor the changes in helium concentration in the sealed space in real time. If the concentration rises significantly within a set time, it is determined that there is a leak in the workpiece.

[0052] After the test is completed, the drive rod 3 rises, and the operating table 31 separates from the loading unit 2.

[0053] Step 3: Switch to the recycling station and perform recycling.

[0054] While the test is in progress, the operator can place a second workpiece at the placement station.

[0055] Once the first workpiece test is complete, the controller again instructs switchboard 5 to rotate 120 degrees. At this time:

[0056] The first (measured) workpiece was transferred to the recycling station.

[0057] The second (workpiece to be tested) was transferred to the testing station.

[0058] The third (empty) loading unit 2 was transferred to the placement station.

[0059] At the recycling station, the drive rod 3 also descends, causing the third protrusion 34 to dock with the loading unit 2.

[0060] The extraction pipe on the third protrusion 34 is activated to extract the residual helium gas mixture inside the workpiece and transport it to the gas storage tank 341 connected to it for subsequent purification processing.

[0061] After the recovery is complete, the drive lever 3 rises and the control panel 31 separates.

[0062] Step 4: Looping and Retrieving

[0063] The controller then instructs the switching disk 5 to rotate 120 degrees. At this point, the first workpiece (which has been inspected and retrieved) returns to its placement position. Air is then introduced into the loading unit 2 via the air supply line box, and the vacuum valve 245 is activated, allowing gas to circulate within the sealed space and workpiece to balance the internal pressure. This allows the operator to easily remove the workpiece and place a new one to begin the next cycle.

[0064] Throughout the process, the placement, testing, and recycling processes are carried out in parallel at different workstations, maximizing the utilization of the equipment.

[0065] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An intelligent helium leak detection, recovery and purification equipment, comprising a rack, characterized in that: a rotatable switching disc is arranged on the rack, a plurality of loading units are fixedly connected to the switching disc, and the loading units are used for placing leak detection workpieces; a placing station, a testing station and a recovery station are arranged on the rack; a drive rod that can extend and retract in the vertical direction is further arranged on the rack, and a movable end of the drive rod is fixedly connected to an operating table; the operating table is provided with a first protruding part, a second protruding part and a third protruding part corresponding to the placing station, the testing station and the recovery station, respectively; the loading unit comprises a lower shell and a movable upper cover plate, a sealed space is formed between the upper cover plate and the lower shell, a helium concentration detector is arranged on the lower shell, the loading unit further comprises a communication air pipe, a first one-way valve and a second one-way valve are arranged on the communication air pipe, and the conducting directions of the first one-way valve and the second one-way valve are opposite; the first protruding part, the second protruding part and the third protruding part are all provided with gas supply pipelines and gas extraction pipelines that can communicate with the first one-way valve and the second one-way valve; the outer side of the communication air pipe is detachably connected to a sealing rubber ring through a quick release assembly; the quick release assembly comprises a rotating pin fixed to the communication air pipe, a clamping block is swingably arranged on the rotating pin, one end of the clamping block is provided with a flange, and a fixed groove corresponding to the flange is formed in the sealing rubber ring; a push spring is arranged between the clamping block and the communication air pipe; a vacuum valve is further arranged on the communication air pipe; the third protruding part is fixedly connected to a gas storage tank, and the gas storage tank communicates with the gas extraction pipeline; one side of the upper cover plate facing the lower shell is provided with a rubber strip. ​ ​ ​ ​ ​ 2. The intelligent helium leak detection, recovery and purification apparatus of claim 1, wherein, ​ 3. The intelligent helium leak detection, recovery and purification apparatus of claim 2, wherein, ​ 4. The intelligent helium leak detection, recovery and purification apparatus of claim 1, wherein, ​ 5. The intelligent helium leak detection, recovery and purification apparatus of claim 1, wherein, ​ 6. The intelligent helium leak detection, recovery and purification apparatus of claim 1, wherein, ​

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