Sampling device and detection system and detection method suitable for liquid detection

Abstract

Embodiments of the present application relate to the field of testing or analyzing materials by optical means, and particularly to a sampling device and a detection system and a detection method suitable for liquid detection. The sampling device comprises a liquid containing seal, a transparent piece and a liquid inlet pipeline. The liquid containing seal is arranged to form a containing space to contain the liquid to be detected; the transparent piece is sealingly arranged on the liquid containing seal to enable the laser to irradiate the liquid to be detected; and the liquid inlet pipeline is arranged to introduce the liquid to be detected into the liquid containing seal and arranged such that the laser focus region is always located at the stable liquid surface. The sampling device enables the formation of a stable liquid surface when the liquid to be detected flows out of the sampling pipeline, so that the laser can be focused on the stable liquid surface, which is conducive to the uniform ionization of the irradiated area of the liquid, thereby improving the accuracy of the detection results obtained by detection.

Description

Technical Field

[0001] The embodiments of this application relate to the field of testing or analyzing materials using optical means, specifically to a sampling device, detection system, and detection method suitable for liquid detection. Background Technology

[0002] The statements herein are provided only as background information in connection with this application and do not necessarily constitute prior art.

[0003] Liquid metal coolant is a commonly used coolant in reactors. During reactor operation, the impurity content in the liquid metal coolant gradually increases. This increased impurity content reduces the cooling performance of the liquid metal coolant, leading to a rise in reactor temperature and threatening reactor safety. Therefore, it is necessary to monitor the impurity content in the liquid metal coolant during reactor operation.

[0004] When detecting the impurity content in liquid metal coolants, laser irradiation of the liquid metal coolant is usually used to detect the impurity content in the liquid metal coolant using laser-induced plasma method.

[0005] However, the technology of using laser-induced plasma method to detect the impurity content in liquid metal coolants still has many limitations. Summary of the Invention

[0006] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0007] To address the aforementioned issues, embodiments of this application provide a sampling device, detection system, and detection method suitable for liquid detection.

[0008] In a first aspect, embodiments of this application provide a sampling device suitable for liquid detection, comprising a liquid-containing seal, a transparent element, and an inlet conduit. The liquid-containing seal is configured to form a containing space to contain the liquid to be detected; the transparent element is sealed within the liquid-containing seal to allow a laser to pass through it and irradiate the liquid to be detected; the inlet conduit is configured to introduce the liquid to be detected into the liquid-containing seal and is configured such that the laser focusing area is always located at a stable liquid surface.

[0009] The sampling device provided in the embodiments of this application, by setting up a liquid inlet pipe, ensures that the laser focusing area is always located on a stable liquid surface, which is beneficial for uniform ionization of the irradiated liquid, thereby improving the accuracy of the detection results. Furthermore, by setting up a transparent part, it is possible to ensure the sealing of the liquid container seal while also ensuring that the laser can penetrate the liquid container seal, so as to ensure that the laser can irradiate the liquid to be detected, so that detection can be achieved without actual contact between the laser and the liquid to be detected.

[0010] Since there are floating impurities on the surface of the liquid to be tested, the presence of floating impurities will affect the laser irradiation of the liquid to be tested, resulting in low accuracy of the impurity content in the liquid detected. Therefore, the sampling device provided in the embodiments of this application can utilize the flow rate, gravity and surface tension of the liquid to be tested to remove floating impurities from the liquid to be tested by allowing the liquid to flow out of the inlet pipe, which helps to ensure the accuracy of the detection results.

[0011] Secondly, embodiments of this application provide a detection system suitable for liquid detection, which includes the sampling device and detection device provided in the embodiments of the first aspect of this application. The detection device uses laser-induced plasma method to detect the liquid to be detected within the sampling device.

[0012] Thirdly, embodiments of this application provide a detection method suitable for liquid detection, which employs the detection system provided in the embodiments of the second aspect of this application. Attached Figure Description

[0013] Other objects and advantages of this application will become apparent from the following description of embodiments of this application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of this application.

[0014] Figure 1 This is a schematic diagram of the detection system provided in an embodiment of this application.

[0015] Explanation of reference numerals in the attached figures: 1000. Detection system; 100. Sampling device; 10. Liquid containment seal; 101. Containment space; 20. Transparent component; 30. Liquid inlet pipeline; 301. Liquid outlet; 40. Discharge pipeline; 200. Detection device; 210. Laser emitting element; 220. Signal receiving lens group; 230. Processor; 240. Laser emitting lens group; 250. Spectrometer; 260. Signal conversion element.

[0016] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding. Detailed Implementation

[0017] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.

[0018] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0019] Laser-induced plasma (LAP) uses a pulsed laser beam to locally ionize the surface of a liquid metal coolant to generate characteristic spectral lines containing information about the composition and content of the coolant. These spectral lines are then used to detect impurities in the coolant. However, this technology suffers from an unstable surface, making it difficult to focus the laser beam onto the coolant surface. This results in uneven ionization of the coolant surface, leading to low accuracy in detecting impurities.

[0020] To address the aforementioned issues, embodiments of this application provide a sampling device, detection system, and detection method suitable for liquid detection.

[0021] See Figure 1 , Figure 1 This is a schematic diagram of the detection system 1000 (mentioned below) provided in an embodiment of this application. The embodiment of this application provides a sampling device 100, which may include a liquid-containing sealing member 10, a transparent member 20, and a liquid inlet pipe 30. The liquid-containing sealing member 10 is configured to form a containing space 101 to contain the liquid to be detected; the transparent member 20 is sealed within the liquid-containing sealing member 10 so that a laser can pass through it to irradiate the liquid to be detected; the liquid inlet pipe 30 is configured to introduce the liquid to be detected into the liquid-containing sealing member 10, and is configured such that the laser focusing area is always located on a stable liquid surface.

[0022] The sampling device 100 provided in the embodiments of this application, by setting up a liquid inlet pipe 30, ensures that the laser focusing area is always located on a stable liquid surface, which is beneficial to the uniform ionization of the irradiated liquid, thereby improving the accuracy of the detection results. Furthermore, by setting up a transparent part 20, it is possible to ensure the sealing of the liquid containing the sealing part 10, while also ensuring that the laser can penetrate the liquid containing the sealing part 10, so as to ensure that the laser can irradiate the liquid to be detected, so that detection can be achieved without actual contact between the laser and the liquid to be detected.

[0023] Since there are floating impurities on the surface of the liquid to be tested, the presence of floating impurities will affect the laser irradiation of the liquid to be tested, resulting in low accuracy of the impurity content in the liquid being detected. Therefore, the sampling device 100 provided in the embodiments of this application can utilize the flow velocity, gravity and surface tension of the liquid to be tested, so that the floating impurities can be removed from the liquid to be tested, which is beneficial to ensuring the accuracy of the detection results.

[0024] The liquid to be tested can be a liquid metal coolant (such as sodium coolant) in the reactor, or other high-temperature liquid substances.

[0025] Transparent component 20 is, for example, a sapphire window.

[0026] In some embodiments, the inlet line 30 is configured to extend through the liquid containment seal 10 and into the containment space 101, such that the liquid to be detected enters the containment space 101 after flowing out of the inlet line 30.

[0027] In some embodiments, the inlet line 30 is configured to extend vertically through the liquid containment seal 10 and to extend horizontally within the containment space 101.

[0028] In some embodiments, the inlet line 30 is connected to the coolant line of the reactor. The sampling device 100 may also include an electromagnetic pump for delivering liquid metal coolant from the coolant line into the inlet line 30.

[0029] See Figure 1In some embodiments, the liquid outlet 301 of the liquid inlet pipe 30 is configured in an inverted funnel shape, so that the liquid to be tested forms a stable laminar flow at the inverted funnel shape, and the laser irradiates the overflow laminar flow. In such embodiments, by configuring the liquid outlet 301 of the liquid inlet pipe 30 in an inverted funnel shape, the liquid to be tested flowing into the liquid inlet pipe 30 can smoothly flow out from the liquid outlet 301 of the liquid inlet pipe 30, so that the liquid forms a stable laminar flow region, thereby forming a stable liquid surface, allowing the laser to be focused on the stable liquid surface; and it can also reduce the splashing of the liquid to be tested, reduce the interference of splashed liquid on the laser irradiation of the laminar flow region, and also help to ensure the accuracy of the detection results.

[0030] Specifically, when the liquid to be tested enters the inlet pipe 30, the liquid to be tested will not flow out of the inlet pipe 30 immediately, but will remain in the inlet pipe 30, causing the liquid level in the inlet pipe 30 to rise continuously until the liquid level in the inlet pipe 30 exceeds the inverted funnel-shaped liquid outlet 301. At this time, the liquid in the inlet pipe 30 overflows from the liquid outlet 301, forming an overflow laminar flow. During the liquid overflow process, floating impurities in the liquid fall into the liquid receiving seal 10, forming a pure overflow laminar flow at the liquid outlet 301.

[0031] In some embodiments, the liquid containment seal 10 is configured to prevent the liquid to be tested from being oxidized when entering the containment space 101. When the liquid to be tested is a liquid metal coolant, since the temperature of the liquid metal coolant is high and it is easily oxidized, the embodiments of this application, by configuring the liquid containment seal 10 to prevent the liquid to be tested from being oxidized when entering the containment space 101, help to keep the liquid to be tested pure, thereby helping to ensure the accuracy of the test results.

[0032] In some embodiments, the containment space 101 is configured to form an inert gas environment during detection. In such embodiments, when the liquid to be detected is a liquid metal coolant, by configuring the containment space 101 to form an inert gas environment during detection, it is possible to prevent the liquid to be detected entering the containment space 101 from coming into contact with air, thus preventing the liquid to be detected from reacting with air and being oxidized or contaminated, and further helping to ensure the accuracy of the detection results.

[0033] In some embodiments, an inert gas environment can be formed in the receiving space 101 of the liquid receiving seal 10 by introducing an inert gas into the receiving space 101. The inert gas is, for example, argon.

[0034] In some embodiments, the liquid-containing seal 10 is further provided with a drain pipe 40 for the liquid to be tested to flow out, so that the liquid to be tested flowing in can flow out of the liquid-containing seal 10. In such embodiments, by providing a drain pipe 40 for the liquid to be tested to flow out on the liquid-containing seal 10, the liquid in the liquid-containing seal 10 is drained, avoiding the liquid to be tested from remaining in the liquid-containing seal 10 and affecting the subsequent flow of the liquid to be tested from the inlet pipe 30. This helps to ensure that continuous sampling can be performed using the sampling device 100, thereby facilitating continuous testing of the liquid to be tested.

[0035] In some embodiments, when the liquid to be detected is a liquid metal coolant, the drain line 40 may also be configured to be connected to the coolant line of the reactor to send the detected liquid metal coolant back to the coolant line of the reactor.

[0036] See Figure 1 See Figure 1 Embodiments of this application also provide a detection system 1000, which may include a sampling device 100 and a detection device 200 provided in any embodiment of this application. The detection device 200 can detect the liquid to be detected in the sampling device 100 using laser-induced plasma method.

[0037] See Figure 1 In some embodiments, the detection device 200 may include a laser 210, a signal receiving lens group 220, and a processor 230. The laser 210 is configured to emit a laser beam, which passes through a transparent element 20 to irradiate the liquid to be detected. The light signal excited by the liquid to be detected passes through the transparent element 20 and is received by the signal receiving lens group 220. The processor 230 is configured to detect the liquid to be detected based on the light signal received by the signal receiving lens group 220. In such an embodiment, the laser 210 emits a laser beam to irradiate the coolant, thereby enabling the detection of impurities in the coolant; and the signal receiving lens group 220 receives the light signal excited by the coolant, and the processor 230 is configured to detect the impurity composition and content of the coolant based on the light signal excited by the coolant.

[0038] Processor 230 is, for example, a computer.

[0039] In some embodiments, the detection device 200 may further include a laser emitting lens group 240, a spectrometer 250, and a signal converter 260. The laser emitted by the laser 210 is focused onto the liquid to be detected after passing through the laser emitting lens group 240 and the transparent element 20. The spectrometer 250 is used to collect the light signal received by the signal receiving lens group 220 and to perform spectral processing on the collected light signal. The signal converter 260 is connected to the spectrometer 250, and the spectral processed light signal can enter the signal converter 260 from the spectrometer 250 and be converted into an electrical signal within the signal converter 260. The signal converter 260 is also configured to be connected to the processor 230, and the electrical signal can enter the processor 230 from the signal converter 260 so that the processor 230 can determine the detection result based on the electrical signal.

[0040] Signal converter 260 is, for example, an ICCD.

[0041] In some embodiments, the sampling device 100 is configured to form an inert gas environment during detection. In such embodiments, by configuring the sampling device 100 to form an inert gas environment during detection, the influence of air on the liquid to be tested can be avoided, preventing the liquid to be tested from being oxidized or contaminated, which helps to ensure the accuracy of the detection system 1000 when detecting liquid metal coolants.

[0042] In some embodiments, the liquid containment seal 10 of the sampling device 100 is configured to form an inert gas environment during detection.

[0043] The embodiments of this application also provide a detection method suitable for liquid detection, which employs the detection system 1000 provided in any embodiment of this application.

[0044] In some embodiments, the detection method may include the following steps: S10: setting up a sampling device 100 such that the liquid containment seal 10 of the sampling device 100 forms an inert gas environment; S20: allowing the liquid to be detected to flow into the sampling device 100; S30: setting up a detection device 200 such that the detection device 200 detects the liquid in the sampling device 100 using laser-induced plasma method, and the liquid to be detected flows out of the sampling device 100 during the detection process.

[0045] The detection method provided in the embodiments of this application creates an inert gas environment in the liquid-containing seal 10 of the sampling device 100, preventing the liquid to be tested within the liquid-containing seal 10 from being affected by air due to reaction with air, which helps ensure the accuracy of the detection results. At the same time, by allowing the liquid to be tested to flow out of the sampling device 100 during the detection process, it is possible to avoid the liquid to be tested remaining in the liquid-containing seal 10 and affecting the subsequent flow of the liquid to be tested into the liquid-containing seal 10, which helps ensure that continuous sampling can be performed using the sampling device 100, thereby facilitating continuous detection of the liquid to be tested.

[0046] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0047] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. A sampling device suitable for liquid detection, characterized in that, The sampling device includes: Liquid containment seals, transparent parts, and inlet piping. The liquid-containing seal is configured to form a containment space to contain the liquid to be tested; The transparent component is sealed to the liquid-containing seal so that the laser can pass through it to irradiate the liquid to be tested; The inlet pipe is configured to introduce the liquid to be tested into the liquid-containing seal, and is configured to ensure that the laser focusing area is always located on a stable liquid surface.

2. The sampling device according to claim 1, characterized in that, The liquid outlet of the inlet pipe is configured in the shape of an inverted funnel, so that the liquid to be tested forms a stable overflow laminar flow at the inverted funnel shape, and the laser irradiates the overflow laminar flow.

3. The sampling device according to claim 1, characterized in that, The liquid containment seal is configured to prevent the liquid to be tested from being oxidized when it enters the containment space.

4. The sampling device according to claim 3, characterized in that, The containment space is configured to create an inert gas environment during detection.

5. The sampling device according to any one of claims 1-4, characterized in that, The liquid containment seal is also provided with a drain pipe for the liquid to be tested to flow out, so that the liquid to be tested flowing in can flow out of the liquid containment seal.

6. A detection system suitable for liquid detection, characterized in that, The detection system includes: The sampling device according to any one of claims 1-5, A detection device that uses laser-induced plasma method to detect the liquid to be tested within the sampling device.

7. The detection system according to claim 6, characterized in that, The detection device includes a laser, a signal receiving lens group, and a processor. The laser is configured to emit laser light, which shines through the transparent element onto the liquid to be tested. The light signal excited by the liquid to be detected is received by the signal receiving lens group through the transparent element; The processor is configured to detect the liquid to be detected based on the light signal received by the signal receiving lens group.

8. The detection system according to claim 6, characterized in that, The sampling device is configured to create an inert gas environment during detection.

9. A detection method suitable for liquid detection, characterized in that, It employs the detection system described in any one of claims 6-8.

10. The detection method according to claim 9, characterized in that, The detection method includes the following steps: S10: The sampling device is configured such that the liquid containment seal of the sampling device forms an inert gas environment; S20: Allow the liquid to be tested to flow into the sampling device; S30: The detection device is configured such that it uses laser-induced plasma method to detect the liquid in the sampling device, and the liquid to be detected flows out of the sampling device during the detection process.

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