A leak-proof mechanism for a hot cell pipe interface
By designing a leak-proof mechanism for the sub-packing hot chamber pipe interface, and using an inflation device and valve ball to collect leaked gas, the problem of low detection accuracy of leaks at the hot chamber pipe interface is solved, enabling the safe collection and treatment of leaked gas and ensuring the safety of personnel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIBEI GARAY PROTECTION EQUIP TECH (SHANGHAI) CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-07
AI Technical Summary
Inside the hot chamber, the presence of radioactive materials makes it difficult to directly inspect and test the leak prevention mechanisms at pipe joints, resulting in low detection accuracy, failure to detect minor leaks in a timely manner, and consequently, failure to address leak problems promptly.
A leak-proof mechanism for the sub-packed hot chamber pipe interface was designed, including components such as a shell, a collection tank, a valve pipe, a valve ball, and a pressurized gas pipe. The leaked gas is collected by inflating the pipe interface with an inflation device, and the gas is collected and treated by the valve ball and the collection tank. This ensures that the leaked gas is rendered harmless in the collection tank before disassembly and repair.
It enables efficient collection and treatment of leaked gases from pipeline interfaces, preventing workers from inhaling harmful gases and ensuring the safety and reliability of the working environment.
Smart Images

Figure CN224469911U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of pipeline interface anti-leakage mechanism, specifically a sub-packing hot chamber pipeline interface anti-leakage mechanism. Background Technology
[0002] Hot chambers are mainly used for high-risk operations such as the production, separation, and purification of radioisotopes, as well as the synthesis and packaging of radiopharmaceuticals. Through their special structure and protective facilities, hot chambers provide operators with a highly safe working environment.
[0003] Within the hot chamber, the presence of radioactive materials makes it difficult to directly inspect and test the leak-proof mechanism of the pipe joints. Even with indirect detection methods, issues such as low detection accuracy and inability to detect minute leaks in a timely manner may arise, leading to delays in identifying and addressing leaks. Therefore, a sub-assembled leak-proof mechanism for pipe joints within the hot chamber is proposed. Utility Model Content
[0004] The purpose of this invention is to provide a leak-proof mechanism for the interface of a hot-chamber pipe, addressing the issue raised in the background art where the presence of radioactive materials makes it difficult to directly inspect and test the leak-proof mechanism of the pipe interface. Even with indirect detection methods, there may be issues such as low detection accuracy and inability to detect minute leaks in a timely manner, leading to the failure to promptly identify and address leak problems.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a leak-proof mechanism for a dispensing hot chamber pipe interface, comprising a housing, a collection groove at one end of the housing, two first fixing blocks fixedly disposed on the outer side of one end of the housing, a first threaded hole at one end of the two first fixing blocks, an installation block movably disposed at one end of the housing, and two second fixing blocks fixedly disposed on the outer side of the installation block near the end of the housing.
[0006] The second fixing block has a second threaded hole at one end, the mounting block has a fixing groove at one end, the mounting block has a handle fixedly installed at the other end, a bolt is movably installed inside the first threaded hole, one end of the bolt passes through the second threaded hole and is movably installed on the outside of the second fixing block, and a valve pipe is fixedly installed at the top of the housing.
[0007] The bottom end of the valve tube passes through the shell and is movably installed at the top of the inside of the collection tank. The top of the valve tube has a third threaded hole, and a second threaded rod is movably installed inside the third threaded hole. A rotating knob is fixedly installed at the top of the second threaded rod, and several anti-slip textures are provided on the outside of the rotating knob. A pin is fixedly installed at the bottom of the second threaded rod.
[0008] The bottom end of the ejector pin is fixedly provided with a first valve ball, and a pressurized air pipe is provided on one side of the valve pipe. One end of the pressurized air pipe passes through the shell and is movably provided at the top of the shell. A first limiting block is fixedly provided inside the valve pipe. A first cavity is provided inside the first limiting block. A first vent hole is provided at both ends of the first cavity.
[0009] The first cavity has a first limiting plate fixedly installed at the bottom of the cavity, a first valve ball movably installed inside the cavity, a collection hole at the other end of the housing, one end of the collection hole movably installed inside the collection groove through the housing, a second limiting block fixedly installed inside the collection hole, and a second cavity installed inside the second limiting block.
[0010] The second cavity has a second vent hole at both ends. A second limiting plate is fixedly installed at the end of the second cavity near the collection tank. A second valve ball is movably installed inside the second cavity. A control rod is fixedly installed at the end of the second valve ball away from the limiting plate. One end of the control rod passes through the second limiting block and is movably installed inside the collection hole.
[0011] This utility model has at least the following beneficial effects:
[0012] In use, this invention features a valve pipe. When a leak is detected and disassembly and repair are required, the inflation device is aligned with the pressurized air pipe. By rotating the rotary knob, the first valve ball is lowered, opening the first air hole. The inflation device then inflates the collection tank through the pressurized air pipe. The gas from the collection tank is then collected by a collection device. Harmful gases in the collection tank are continuously removed through inflation and collection. The device is then disassembled by loosening the bolts, allowing workers to repair the pipe joint. This invention solves the problem of insufficient handling of harmful gases during pipe joint disassembly and repair in existing technologies, which could lead to workers inhaling harmful gases. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the internal mechanism of this utility model;
[0015] Figure 3 This is an enlarged schematic diagram of the structure at point A of this utility model;
[0016] Figure 4 This is an enlarged schematic diagram of the structure at point B of this utility model.
[0017] In the diagram: 1. Housing; 2. Collection groove; 3. First fixing block; 4. First threaded hole; 5. Mounting block; 6. Second fixing block; 7. Second threaded hole; 8. Fixing groove; 9. Handle; 10. Bolt; 11. Valve pipe; 12. Third threaded hole; 13. Second lead screw; 14. Rotary knob; 15. Anti-slip texture; 16. Ejector pin; 17. First valve ball; 18. Pressurized air pipe; 19. First limiting block; 20. First cavity; 21. First vent hole; 22. First limiting plate; 23. Collection hole; 24. Second limiting block; 25. Second cavity; 26. Second vent hole; 27. Second limiting plate; 28. Second valve ball; 29. Control rod. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Example 1
[0020] Please see Figure 1-4 This utility model provides a technical solution: a leak-proof mechanism for the interface of a hot chamber pipe for dispensing, including a housing 1, a collection groove 2 at one end of the housing 1, two first fixing blocks 3 fixedly disposed on the outer side of one end of the housing 1, a first threaded hole 4 at one end of the two first fixing blocks 3, an installation block 5 movably disposed at one end of the housing 1, two second fixing blocks 6 fixedly disposed on the outer side of the installation block 5 near the end of the housing 1, a second threaded hole 7 at one end of the second fixing block 6, a fixing groove 8 at one end of the installation block 5, a handle 9 fixedly disposed at the other end of the installation block 5, a bolt 10 movably disposed inside the first threaded hole 4, one end of the bolt 10 passing through the second threaded hole 7 and movably disposed on the outer side of the second fixing block 6, and a valve pipe 11 fixedly disposed at the top of the housing 1.
[0021] The bottom end of the valve tube 11 passes through the housing 1 and is movably disposed inside the top of the collection tank 2. A third threaded hole 12 is opened at the top of the valve tube 11. A second threaded rod 13 is movably disposed inside the third threaded hole 12. A rotating knob 14 is fixedly disposed at the top of the second threaded rod 13. Several anti-slip textures 15 are opened on the outside of the rotating knob 14. A pin 16 is fixedly disposed at the bottom of the second threaded rod 13. A first valve ball 17 is fixedly disposed at the bottom of the pin 16. A pressurized air pipe 18 is opened on one side of the inside of the valve tube 11. One end of the pressurized air pipe 18 passes through the housing 1 and is movably disposed at the top of the housing 1. A first limiting block 19 is fixedly disposed inside the valve tube 11. A first cavity 20 is opened inside the first limiting block 19. A first vent hole 21 is opened at both ends of the first cavity 20.
[0022] A first limiting plate 22 is fixedly installed at the bottom of the first cavity 20. A first valve ball 17 is movably installed inside the first cavity 20. A collection hole 23 is opened at the other end of the housing 1. One end of the collection hole 23 passes through the housing 1 and is movably installed inside the collection groove 2. A second limiting block 24 is fixedly installed inside the collection hole 23. A second cavity 25 is opened inside the second limiting block 24. A second vent hole 26 is opened at both ends of the second cavity 25. A second limiting plate 27 is fixedly installed at the end of the second cavity 25 near the collection groove 2. A second valve ball 28 is movably installed inside the second cavity 25. A control rod 29 is fixedly installed at the end of the second valve ball 28 away from the limiting plate. One end of the control rod 29 passes through the second limiting block 24 and is movably installed inside the collection hole 23.
[0023] In use, first align the collection tank 2 at one end of the housing 1 with the pipe interface, then align the mounting block 5 with the pipe interface from the other direction, and then align the first fixing block 3 and the second fixing block 6. Finally, connect and fix the housing 1 and the mounting block 5 with bolts 10. Seal the connection with sealant and sealing rings to prevent gas leakage. When gas leaks at the pipe interface, the gas pressure in the collection tank 2 increases. The increased internal pressure will push the first valve ball 17 and the second valve ball 28 outward, causing them to block the first vent 21 and the second vent 26, preventing the leaked gas from overflowing and keeping it inside the collection tank 2. After a leak occurs, the operator presses the control rod 29 through the collection hole 23 of the collection device, causing the second valve ball 28 to leave the second vent 26, so that the leaked gas inside the collection tank 2 is collected through the collection hole 23 for unified harmless treatment.
[0024] Example 2
[0025] In this second embodiment, the other structures remain unchanged. The difference from the first embodiment is that a valve pipe 11 is installed. When a leak is found and disassembly and repair are required, the inflation device is aligned with the pressurized air pipe 18, and the first valve ball 17 is turned downwards by rotating the rotary knob 14 to open the first air hole. The inflation device inflates the inside of the collection tank 2 through the pressurized air pipe 18, and the gas from the inside of the collection tank 2 is collected by the collection device. The harmful gas inside the collection tank 2 is cleared through continuous inflation and collection. Then, the device is disassembled by loosening the bolt 10, and the workers can then repair the pipe joint. This solves the problem in the prior art where the treatment of harmful gases is insufficient when disassembling and repairing the pipe joint, which can lead to workers inhaling harmful gases.
[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A leak-proof mechanism for a hot-filling pipe interface, comprising a housing (1), a collection groove (2) being provided at one end of the housing (1), two first fixing blocks (3) being fixedly provided on the outer side of one end of the housing (1), a first thread hole (4) being provided at one end of the two first fixing blocks (3), an installation block (5) being movably provided at one end of the housing (1), and two second fixing blocks (6) being fixedly provided on the outer side of the installation block (5) near the end of the housing (1).
2. The anti-leakage mechanism for the sub-packing hot chamber pipe interface according to claim 1, characterized in that: The second fixing block (6) has a second threaded hole (7) at one end, the mounting block (5) has a fixing groove (8) at one end, the mounting block (5) has a handle (9) fixedly installed at the other end, the first threaded hole (4) has a bolt (10) movably installed inside, one end of the bolt (10) passes through the second threaded hole (7) and is movably installed on the outside side of the second fixing block (6), and the top of the housing (1) has a valve pipe (11) fixedly installed.
3. The anti-leakage mechanism for the sub-packing hot chamber pipe interface according to claim 2, characterized in that: The bottom end of the valve tube (11) passes through the housing (1) and is movably disposed inside the top of the collection tank (2). The top end of the valve tube (11) is provided with a third thread hole (12). The second thread rod (13) is movably disposed inside the third thread hole (12). The top end of the second thread rod (13) is fixedly provided with a rotating knob (14). The outer side of the rotating knob (14) is provided with several anti-slip textures (15). The bottom end of the second thread rod (13) is fixedly provided with a pin (16).
4. The anti-leakage mechanism for the sub-packing hot chamber pipe interface according to claim 3, characterized in that: The bottom end of the ejector pin (16) is fixedly provided with a first valve ball (17). A pressurized air pipe (18) is provided on one side of the valve pipe (11). One end of the pressurized air pipe (18) passes through the housing (1) and is movably provided at the top of the housing (1). A first limiting block (19) is fixedly provided inside the valve pipe (11). A first cavity (20) is provided inside the first limiting block (19). A first vent hole (21) is provided at both ends of the first cavity (20).
5. The anti-leakage mechanism for the sub-packing hot chamber pipe interface according to claim 4, characterized in that: A first limiting plate (22) is fixedly provided at the bottom of the first cavity (20). The first valve ball (17) is movably provided inside the first cavity (20). A collection hole (23) is provided at the other end of the housing (1). One end of the collection hole (23) passes through the housing (1) and is movably provided inside the collection groove (2). A second limiting block (24) is fixedly provided inside the collection hole (23). A second cavity (25) is provided inside the second limiting block (24).
6. The anti-leakage mechanism for the sub-packing hot chamber pipe interface according to claim 5, characterized in that: The second cavity (25) has a second vent hole (26) at both ends. A second limiting plate (27) is fixedly installed at the end of the second cavity (25) near the collection groove (2). A second valve ball (28) is movably installed inside the second cavity (25). A control rod (29) is fixedly installed at the end of the second valve ball (28) away from the limiting plate. One end of the control rod (29) passes through the second limiting block (24) and is movably installed inside the collection hole (23).