A closed ICP-AES connection device with replaceable coil

Abstract

This invention relates to a closed ICP-AES connection device with replaceable coils, comprising: a solder plate, a replacement component, a connector, a radio frequency (RF) source, and a drive component. The solder plate is soldered to the inner wall of a glove box and seals the glove box's interface, and has a through hole communicating with the interface. The replacement component is inserted into the through hole, and an electromagnetic coil is connected to the end of the replacement component away from the solder plate. The connector is located outside the glove box and is connected to the end of the replacement component away from the electromagnetic coil. The RF source is connected to the end of the connector away from the replacement component. The drive component is connected to the RF source to drive the RF source to move in a direction away from or towards the glove box. Using the closed ICP-AES connection device with replaceable coils described in this invention ensures the airtightness of the glove box during coil replacement, significantly shortens replacement time, and effectively guarantees the safety of experimental and maintenance personnel.

Description

Technical Field

[0001] This invention belongs to the field of radioactive sample analysis, specifically relating to a closed ICP-AES connection device with replaceable coils. Background Technology

[0002] As a mature analytical method, inductively coupled plasma atomic emission spectrometry (ICP-AES) is now widely used for the determination of the content of various elements. With the clarification of post-processing analytical requirements and technological advancements, closed-system ICP-AES equipment has emerged, which encloses the sample introduction system, part of the excitation source (including induction coil, torch tube, and part of the gas path), and part of the optical path in a glove box, while other components are external (e.g., Figure 1 For the connection device of this equipment, the design focus is on the sealing of the connection between the high-frequency electromagnetic induction coil inside the box and the radio frequency source outside the box, as well as the stability of the coil during use. The latter will determine the ease of use and service life of the equipment.

[0003] Currently, due to considerations for the stability of post-processing analysis equipment, almost all enclosed ICP-AES equipment adopts the simplest fixed RF source-glove box connection design. After installation and testing, this design will basically eliminate the risk of leakage during use.

[0004] However, in actual sample analysis, the high-frequency electromagnetic induction coil may be damaged. Once a malfunction occurs, the seal must be removed by professionals, consuming a significant amount of manpower and resources for replacement. Furthermore, during coil replacement, the inside and outside of the glove box are connected, which can easily lead to the leakage of radioactive materials, posing a serious threat to the laboratory environment, equipment maintenance, and the health of laboratory personnel. Summary of the Invention

[0005] To address the shortcomings of existing designs, the purpose of this invention is to provide a closed ICP-AES connection device with replaceable coils, which enables easy and quick coil replacement while preventing the leakage of radioactive materials during the coil replacement process.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a closed ICP-AES connection device with replaceable coils, comprising a soldering plate, a replacement component, a connector, an RF source, and a driving component. The soldering plate is soldered to the inner wall of the glove box and seals the glove box interface, and has a through hole communicating with the interface. The replacement component is inserted into the through hole, and the electromagnetic coil is connected to the end of the replacement component away from the soldering plate. The connector is located outside the glove box and is connected to the end of the replacement component away from the electromagnetic coil. The RF source is connected to the end of the connector away from the replacement component. The driving component is connected to the RF source to drive the RF source to move in a direction away from or towards the glove box.

[0007] Furthermore, the replacement component is equipped with a removable protective cover, and the electromagnetic coil is located inside the protective cover.

[0008] Furthermore, a stepped groove is provided on the side of the replacement component away from the connector, and the protective cover is inserted into the stepped groove.

[0009] Furthermore, a limiting component is provided on the side of the welding plate away from the inner wall of the glove box. The limiting component is located around the through hole to block or release the replacement component.

[0010] Furthermore, the limiting component includes a base and a stop bar. The base is rotatably connected to the welding plate, and the stop bar is connected to the end of the base away from the welding plate and extends toward the through hole.

[0011] Furthermore, there are two limiting components, which are located on opposite sides of the through hole.

[0012] Furthermore, the driving stroke of the driving component should be greater than 1.5 times the length of the electromagnetic coil.

[0013] Furthermore, the replacement component is fixed to the electromagnetic coil by welding, and the welding plate is fixed to the glove box by cold welding symmetrical welding.

[0014] Furthermore, the size of the welding plate is larger than the size of the interface.

[0015] Furthermore, the replacement component is equipped with a sealing gasket.

[0016] The advantages of this invention are as follows: By using a modular structure, it solves the problems of difficult replacement of high-frequency induction electromagnetic coils and easy leakage of radioactive materials in closed ICP-AES equipment. While enabling rapid coil replacement, it ensures the airtightness of the glove box during the replacement process, effectively guaranteeing the safety of experimental and maintenance personnel. It also reduces the workload of waste treatment after replacement to an extremely low level, effectively improving the durability and maintainability of closed ICP-AES instruments, directly extending the service life of the analytical equipment, and improving the economic efficiency of the analytical equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a closed-loop ICP-AES device.

[0018] Figure 2 A schematic diagram of the structure of a closed ICP-AES connection device with replaceable coil provided by the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram showing the positional relationship between the middle limit component, the welding plate, and the replacement component;

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Welding plate; 2. Replacement components; 3. Connectors; 4. Radio frequency source; 5. Drive components; 11. Limiting components. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 2-3 As shown, the present invention provides a closed ICP-AES connection device with replaceable coil, including a welding plate 1, a replacement component 2, a connector 3, an RF source 4 and a drive component 5. The welding plate 1 is welded to the inner wall of the glove box and seals the glove box interface, and has a through hole communicating with the interface.

[0024] Replacement component 2 is inserted into the through hole, and the electromagnetic coil is connected to the end of replacement component 2 away from the welding plate 1. Connector 3 is located outside the glove box and is connected to the end of replacement component 2 away from the electromagnetic coil. Radio frequency source 4 is connected to the end of connector 3 away from replacement component 2. Drive component 5 is connected to radio frequency source 4 to drive radio frequency source 4 to move in a direction away from or towards the glove box, thereby driving connector 3 to move through radio frequency source 4.

[0025] It should be noted that the interface size of the glove box is smaller than the size of the welding plate 1, thereby using the welding plate 1 to seal the interface.

[0026] When a damaged electromagnetic coil needs to be replaced, first disconnect the connection between connector 3 and replacement component 2. Then, drive the radio frequency source 4 away from the glove box using drive component 5. Next, take another replacement component 2 and connect it to connector 3. Subsequently, drive the radio frequency source 4 towards the glove box using drive component 5. Use the other replacement component 2 to push the replacement component 2 containing the damaged electromagnetic coil into the glove box and insert it into the through hole, thus completing the replacement of the electromagnetic coil. That is, the new replacement component 2 is used to press and replace the previous replacement component 2, thereby replacing the electromagnetic coil connected to the replacement component 2. The above process is repeated the next time a replacement is needed, thereby ensuring the glove box is sealed during the replacement process and preventing the leakage of radioactive materials.

[0027] It should be noted that the drive component 5 can be mechanically driven, such as a lead screw module drive or a cylinder drive, or it can be manually driven. That is, as long as it can drive the RF source 4 to move towards or away from the glove box, thereby moving the connector 3 together, it is acceptable. Preferably, the drive component 5 is a lead screw module.

[0028] It should be noted that the connector 3 and the replacement component 2 can be connected by any detachable method such as bolt connection, plug connection, or snap connection, as long as the detachable connection between the connector 3 and the replacement component 2 can be achieved.

[0029] Furthermore, the replacement component 2 is equipped with a removable protective cover (not shown in the figure), and the electromagnetic coil is located inside the protective cover.

[0030] It is understandable that by setting up a protective cover, the electromagnetic coil connected to the replacement component 2 can be protected during the pressing process, preventing damage to the electromagnetic coil due to the pressing. After the replacement component 2 is pressed until it is inserted into the through hole, i.e., the electromagnetic coil enters the glove box, the protective cover can be removed from inside the glove box.

[0031] It should be noted that in some embodiments, a protective cover may not be provided, and other forms of protection may be used for the electromagnetic coil. For example, a detachable annular top post may be provided on the replacement component 2, which is used to press down the electromagnetic coil. After the electromagnetic coil enters the glove box, the top post can be removed using the gloves inside the box.

[0032] It is understandable that when a protective cover or other structure is used, the size of the protective cover or other structure must be compatible with the size of the through hole to avoid leakage during the pressing process.

[0033] Furthermore, a stepped groove is provided on the side of the replacement component 2 away from the connector 3, and the protective cover is inserted into the stepped groove. By providing the stepped groove, it can be ensured that the protective cover will not fall off during the pressing process, and when it is necessary to remove the protective cover, it can be removed simply by pulling the protective cover away from the replacement component 2.

[0034] Furthermore, a limiting component 11 is provided on the side of the welding plate 1 away from the inner wall of the glove box. The limiting component is located around the through hole to block or release the replacement component 2.

[0035] It is understandable that when replacement component 2 is pressed against the through hole and the electromagnetic coil reaches the predetermined position, the limiting component 11 prevents replacement component 2 from moving further into the glove box, thus preventing replacement component 2 from falling. When the electromagnetic coil needs to be replaced, the limiting component 11 is released from blocking the replacement component 2, allowing the replacement component 2 to be pressed into the glove box.

[0036] It should be noted that in some embodiments, the limiting component 11 may not be provided, and the stroke may be controlled by the driving component 5 to ensure that the replacement component 2 does not fall into the glove box after replacement.

[0037] Furthermore, the limiting component 11 includes a base and a stop bar. The base is rotatably connected to the welding plate 1, and the stop bar is connected to the end of the base away from the welding plate 1 and extends toward the through hole.

[0038] It is understandable that by rotating the base, the lever can be positioned to block or release the replacement component 2.

[0039] It is understandable that the height of the base needs to be greater than the height of the replacement component 2 after it is inserted into the through hole and enters the glove box through the through hole, so as to avoid interference between the stop and the replacement component 2 when the base rotates.

[0040] It should be noted that in some embodiments, the limiting component 11 can also be other structures, as long as it can block or release the replacement component 2.

[0041] Furthermore, there are two limiting components 11, which are located on opposite sides of the through hole.

[0042] Furthermore, the drive stroke of the drive component 5 should be greater than 1.5 times the length of the electromagnetic coil.

[0043] Furthermore, the replacement component 2 is fixed to the electromagnetic coil by welding, and the welding plate 1 is fixed to the glove box by cold welding symmetrical welding.

[0044] Furthermore, a sealing gasket is provided on the replacement component 2 to increase the sealing performance after the replacement component 2 is inserted into the through hole.

[0045] The working principle of this invention is as follows: When the electromagnetic coil malfunctions beyond repair, firstly, open the torch cover, remove the sample pump tube and gas tube connected to the torch, and remove the torch from inside the glove box. Clean the space below the coil to ensure there are no fragile containers or containers containing radioactive samples or solutions, preventing glassware breakage and sample spillage due to the removal of the faulty coil. Then, disconnect the connection between the connector 3 and the replacement assembly 2. Next, drive the radio frequency source 4 away from the glove box via the drive assembly 5, thereby moving the connector 3 away from the glove box as well. Because the electromagnetic coil replacement component has multiple sealing gaskets and a transition fit with the through holes on the glove box welding plate, the replacement assembly 2 will not retract with the movement of the radio frequency source 4; the glove box remains sealed. Next, connect the new replacement assembly 2 to the connector 3 and drive it towards the glove box via the drive assembly 5. Then, the protective cover on the new replacement assembly 2 presses down on and replaces the original replacement assembly 2, causing it and the accompanying damaged electromagnetic coil to be pressed into the glove box. Simultaneously, before applying pressure, adjust the limiting component 11 to the open position. After pressure is applied, remove the protective cover and then adjust the limiting component 11 to the blocking position to complete the replacement of the electromagnetic coil. Because the glove box is always under negative pressure during the replacement of the electromagnetic coil, and the through-hole size on the protective cover and welding plate 1 is consistent, with a sealing gasket between them, and because the entire replacement process takes only a few seconds, it can be ensured that the radioactive material inside the glove box will not leak. Finally, the damaged (replaced) electromagnetic coil falls into the glove box and can be removed along with the remaining radioactive waste through the waste outlet for disposal by a specialized department.

[0046] As can be seen from the above embodiments, the present invention solves the problems of difficult replacement of high-frequency induction electromagnetic coils and easy leakage of radioactive materials in closed ICP-AES equipment through modular design. While realizing rapid coil replacement, it ensures the airtightness of the glove box during the replacement process, effectively guaranteeing the safety of experimental and maintenance personnel, and reducing the workload of waste treatment after replacement to an extremely low level. This effectively improves the durability and maintainability of closed ICP-AES instruments, directly extends the service life of analytical equipment, and improves the economy of the analytical equipment.

[0047] Meanwhile, this invention also features a compact size; the space occupied by the replaceable connecting device and the fixed device within the glove box is similar, only requiring a small amount more space around the coil inside the box, ensuring the rational use of the limited space. It has good versatility, allowing customization for most existing enclosed ICP-AES equipment with minor modifications to achieve functionality. It offers high design flexibility, as the connecting device can be connected and fixed to torch holders, torch covers, etc., effectively optimizing space utilization within the glove box, reducing the openings and supports required for fixing the aforementioned structures, and minimizing installation errors and stress between components. Furthermore, it ensures good performance consistency before and after coil replacement, allowing replacement after the new electromagnetic coil has been connected, adjusted, and tested outside the glove box, avoiding poor contact between the RF source and the electromagnetic coil, and ensuring stable operation.

[0048] The methods and systems described in this invention are not limited to the embodiments described in the specific implementation. Other implementation methods derived by those skilled in the art based on the technical solutions of this invention also fall within the scope of technical innovation of this invention.

Claims

1. A replaceable coil closed ICP-AES connection device, characterized in that, The application relates to a replaceable coil closed ICP-AES connecting device, which comprises a welding plate, a replacement assembly, a connecting piece, a radio frequency source and a driving assembly. The welding plate is welded to the inner wall of a glove box and seals the interface of the glove box, and a through hole is arranged on the welding plate and communicates with the interface. The replacement assembly is inserted into the through hole, and an electromagnetic coil is connected to one end of the replacement assembly away from the welding plate. The connecting piece is located outside the glove box and is connected to one end of the replacement assembly away from the electromagnetic coil. The radio frequency source is connected to one end of the connecting piece away from the replacement assembly. The driving assembly is connected to the radio frequency source to drive the radio frequency source to move away from or close to the glove box.

2. The replaceable coil closed ICP-AES connecting device of claim 1, wherein a detachable protective cover is arranged on the replacement assembly, and the electromagnetic coil is located in the protective cover.

3. The replaceable coil closed ICP-AES connecting device of claim 2, wherein a stepped groove is arranged on one side of the replacement assembly away from the connecting piece, and the protective cover is inserted into the stepped groove.

4. The replaceable coil closed ICP-AES connecting device of claim 1, wherein a limiting assembly is arranged on one side of the welding plate away from the inner wall of the glove box, and the limiting assembly is arranged around the through hole to block or release the replacement assembly.

5. The replaceable coil closed ICP-AES connecting device of claim 4, wherein the limiting assembly comprises a base and a blocking rod, the base is rotationally connected to the welding plate, and the blocking rod is connected to one end of the base away from the welding plate and extends towards the through hole.

6. The replaceable coil closed ICP-AES connecting device of claim 4, wherein the number of the limiting assemblies is two, and the two limiting assemblies are respectively located on opposite sides of the through hole. The driving stroke of the driving assembly is greater than 1.5 times the length of the electromagnetic coil. The replacement assembly and the electromagnetic coil are fixed by welding, and the welding plate is fixed on the glove box by symmetrical cold welding.

9. The replaceable coil closed ICP-AES connecting device of claim 1, wherein a sealing gasket is arranged on the replacement assembly.

7. A replaceable coil closed ICP-AES coupling device according to claim 1, characterized in that : ​ 8. A replaceable coil closed ICP-AES coupling device as claimed in claim 1, characterized in that : ​ ​ ​

Images