WO2024027542A1 - Mutual-induction type liquid metal leakage monitoring apparatus and use thereof - Google Patents

Mutual-induction type liquid metal leakage monitoring apparatus and use thereof Download PDF

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Publication number
WO2024027542A1
WO2024027542A1 PCT/CN2023/109413 CN2023109413W WO2024027542A1 WO 2024027542 A1 WO2024027542 A1 WO 2024027542A1 CN 2023109413 W CN2023109413 W CN 2023109413W WO 2024027542 A1 WO2024027542 A1 WO 2024027542A1
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WIPO (PCT)
Prior art keywords
liquid metal
leakage monitoring
monitoring device
detection sensor
metal leakage
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PCT/CN2023/109413
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French (fr)
Chinese (zh)
Inventor
曾丝竹
赵友有
吴宝安
王绪霄
黎国民
李忠意
王洪涛
熊国华
李涛
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中广核研究院有限公司
中国广核电力股份有限公司
中国广核集团有限公司
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Publication of WO2024027542A1 publication Critical patent/WO2024027542A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Definitions

  • the invention relates to the technical field of liquid metal leakage monitoring, and in particular to a mutual inductance liquid metal leakage monitoring device and its application.
  • Liquid metal has the characteristics of high density, high temperature, and strong corrosiveness, which makes metal components such as metal pipes, tanks, connecting flanges, and valves more susceptible to thermal aging and corrosion, which can lead to leakage.
  • Some chemically active liquid metals, such as sodium, will burn violently when in contact with air, leading to serious consequences; at the same time, in liquid metal fast reactors, the liquid metal used as the primary loop coolant has high radioactivity, so Effective means need to be taken to monitor leakage.
  • contact detectors are currently mainly used.
  • the contact detector is based on the conductivity of liquid metal. When the two wires used for detection are short-circuited due to leaking liquid metal, an alarm is issued. It has mature and widespread applications in sodium-cooled fast reactors. Because the detector has the characteristics of small size and flexible installation, it can be used for leak detection of pipelines, pumps, containers, flanges and other components. However, since the diameter of the contact detector's probe is very small (millimeter level), the contact detector is susceptible to interference from impurities, insulation aging, wire core bending and accidental contact, etc., resulting in a high false alarm rate.
  • the detector is in a high-temperature radiation environment, the detector probe is prone to oxidation, forming an oxide film that reduces the conductivity of the probe, making it impossible to accurately detect leaks. If the liquid metal does not sufficiently wet the electrode, liquid metal leakage may not be detected in time. In some important monitoring locations with harsh environments, there are higher requirements for detector sensitivity and accuracy, and diversified detector designs need to be considered. Therefore, new monitoring methods need to be proposed to accurately monitor the leakage of liquid metal.
  • the technical problem to be solved by the present invention is to provide a mutual inductance liquid metal leakage monitoring device and its application.
  • the technical solution adopted by the present invention to solve the technical problem is: providing a mutual inductance liquid metal leakage monitoring device, including a detection sensor for inserting into a leakage monitoring position;
  • the detection sensor includes a flexible tube body, a probe assembly provided at one end of the tube body, and a cable passed through the tube body and connected to the probe assembly;
  • the probe assembly includes a protective sheath connected to the tube body, a coil bobbin arranged in the protective sheath, a primary coil and a secondary coil wound around the coil bobbin in turn; the primary coil and the secondary coil
  • the joints pass through the coil bobbin respectively and connect the cables.
  • the outer diameter of the probe assembly is ⁇ 26mm.
  • the protective sleeve is provided with a protruding first annular step toward the end of the pipe body, and the first annular step is provided with external threads;
  • the pipe body is provided with a protruding first annular step toward the end of the protective sleeve.
  • the first annular step and the second annular step are tightly connected through threaded fit.
  • the pipe body is provided with a number of support structures arranged at intervals along its axial direction.
  • the support structures are connected between the inner wall surface of the pipe body and the outer peripheral surface of the cable to position and support the cable.
  • the pipe body is a metal hose.
  • the protective cover is made of high temperature resistant non-magnetic stainless steel.
  • the primary coil and the secondary coil are respectively wound by stainless steel armored magnesium oxide insulated single-core nickel cables.
  • the mutual inductance liquid metal leakage monitoring device further includes a guide tube arranged at the leakage monitoring position for the detection sensor to be inserted into it.
  • the guide tube is a cylinder structure with one end closed and the other end open;
  • the probe assembly of the detection sensor is inserted into the closed end of the guide tube.
  • the mutual inductance liquid metal leakage monitoring device further includes a monitoring instrument connected to the detection sensor; the monitoring instrument provides stable AC power to the primary coil of the detection sensor, and receives and processes the secondary coil. output signal.
  • the leakage monitoring locations include interlayer gaps of double-layered containers, pipes, tanks, boxes, connecting flanges, and valves.
  • the invention also provides an application of a mutual inductance liquid metal leakage monitoring device, in which the detection sensor is extended into the interlayer gap of a double-layer container containing liquid metal.
  • the mutual inductance liquid metal leakage monitoring device of the present invention performs monitoring based on the principle of electromagnetic induction without contacting the measured medium, avoids false triggering problems caused by impurity contamination, insulation aging, etc., and effectively reduces the false alarm rate; it has high reliability and sensitivity High advantages.
  • Figure 1 is a schematic cross-sectional structural diagram of a mutual inductance liquid metal leakage monitoring device on a double-layer container according to an embodiment of the present invention
  • Figure 2 is a schematic cross-sectional structural diagram of a detection sensor in a mutual inductance liquid metal leakage monitoring device according to an embodiment of the present invention.
  • a mutual inductance liquid metal leakage monitoring device includes a detection sensor 10, a guide tube 20 and a monitoring instrument 30.
  • the detection sensor 10 is intended to be inserted into the leak monitoring location.
  • the guide tube 20 is used to be arranged at the leakage monitoring position to provide a detection channel for the detection sensor 10 and at the same time isolate the detection sensor 10 from the measured medium (such as liquid metal) to prevent the measured medium from contacting the detection sensor 10 and causing contamination or corrosion.
  • Detect sensor 10 is intended to be inserted into the leak monitoring location.
  • the guide tube 20 is used to be arranged at the leakage monitoring position to provide a detection channel for the detection sensor 10 and at the same time isolate the detection sensor 10 from the measured medium (such as liquid metal) to prevent the measured medium from contacting the detection sensor 10 and causing contamination or corrosion. Detect sensor 10.
  • the monitoring instrument 30 is connected to the detection sensor 10, provides a stable AC power supply to the detection sensor 10, receives the signal output from the detection sensor 10, and determines whether leakage occurs at the leakage monitoring location based on the signal. In the event of a leak, an alarm can also be issued.
  • the detection sensor 10 includes a pipe body 11 , a probe assembly 12 and a cable 13 .
  • the probe assembly 12 is connected to one end of the tube body 11 and serves as the probe part of the detection sensor 10 .
  • the cable 13 is passed through the pipe body 11 and connected to the probe assembly 12 .
  • the end of the cable 13 away from the probe assembly 12 can pass out of the pipe body 11 to connect with the monitoring instrument 30 .
  • the pipe body 11 can be set to different lengths according to the leakage monitoring position, and has the ability to be bent, so that it can be arranged in a curved path.
  • the pipe body 11 is preferably a metal hose.
  • the pipe body 11 can be provided with a number of support structures 14 arranged at intervals along its axial direction.
  • the support structures 14 are connected to the pipe body 11. Between the inner wall surface and the outer peripheral surface of the cable 13, the cable 13 is positioned and supported.
  • the support structure 14 can be an annular bracket, an annular support piece, etc., with its outer periphery fixed on the inner wall of the pipe body 11 , a middle hole for the cable 13 to pass through, and a tight fit with the cable 13 .
  • the probe assembly 12 includes a protective sheath 121 connected to the tube body 11 , a coil bobbin 122 disposed in the protective sheath 121 , and a primary coil 123 and a secondary coil 124 wound around the coil bobbin 122 in sequence.
  • the joints of the primary coil 123 and the secondary coil 124 pass through the coil bobbin 122 respectively, and can be connected to the cable 13 through wires.
  • the protective sleeve 121 is a cylindrical body with both ends open, and is axially connected to the end of the tube body 11 .
  • the protective sleeve 121 is provided with a protruding first annular step 125 toward the end of the pipe body 11.
  • the first annular step 125 is provided with external threads (not shown); the end of the pipe body 11 facing the protective sleeve 121 is provided with a protruding second annular step 111, and the second annular step 111 is provided with an internal thread that matches the external thread ( (not shown); the first annular step 125 and the second annular step 111 are tightly connected through threaded fit, thereby realizing the axial connection between the protective sleeve 121 and the pipe body 11 .
  • the protective sheath 121 and the pipe body 11 can also be connected through ferrules, threads, welding, interference fit, etc.
  • the coil bobbin 122 is tightly fitted in the protective sleeve 121 and is positioned and supported by the protective sleeve 121 .
  • the coil bobbin 122 may be an I-shaped bobbin.
  • the primary coil 123 is tightly wound on the coil bobbin 122, and the secondary coil 124 is tightly wound around the outside of the primary coil 123. Both the primary coil 123 and the secondary coil 124 are at work. In the recessed part of the font skeleton.
  • a through hole (not shown) is provided on the end surface of the coil bobbin 122 facing the cable 13.
  • the joints of the primary coil 123 and the secondary coil 124 respectively pass through the through holes and are connected to the cable 13.
  • the protective cover 121 is made of high-temperature resistant non-magnetic stainless steel to ensure that the protective cover 121 has high magnetic permeability and to minimize the magnetic loss rate in the protective cover 121 .
  • the coil bobbin 122 is made of 304 stainless steel with high temperature resistance and weak magnetic permeability.
  • the primary coil 123 and the secondary coil 124 are respectively wound by stainless steel-armored magnesium oxide insulated single-core nickel cables.
  • the cable diameter of the primary coil 123 and the secondary coil 124 is preferably limited to 1 mm.
  • the size of the probe assembly 12 is set as small as possible while meeting the process and performance requirements.
  • the outer diameter of the probe assembly 12 is ⁇ 26 mm, that is, the outer diameter of the probe part of the detection sensor 10 Diameter ⁇ 26mm.
  • the size of the coil bobbin 122, the number of coil layers and turns of the primary coil 123 and the secondary coil 124, the length of the cable 13, the power frequency, etc. can be adjusted according to the monitoring environment to adapt to the needs of different environments.
  • the guide tube 20 is a rigid cylinder structure with one end closed and the other end open, and has a certain structural strength.
  • the hollow passage inside the guide cylinder 20 forms a detection passage for the detection sensor 10 to be inserted therein.
  • the guide tube 20 plays a role in guiding, positioning and isolating the measured medium (such as liquid metal) for the detection sensor 10. It can be set to different lengths according to the leakage monitoring position.
  • the guide tube 20 can be fixed or formed on the device where the leakage monitoring position is located, such as containers, pipes, valves and other devices.
  • the closed end of the guide tube 20 should be able to be at the monitoring point of the leakage monitoring position.
  • the detection assembly 12 When the detection sensor 10 is inserted into the guide tube 20 , the detection assembly 12 is inserted from the open end of the guide tube 20 until the probe assembly 12 reaches the closed end of the guide tube 20 .
  • the inner diameter of the guide tube 20 is set corresponding to the outer diameter of the detection sensor 10, and is preferably slightly larger than the outer diameter of the detection sensor 10. This facilitates the free insertion and removal of the detection sensor 10 while minimizing the contact between the measured medium outside the guide tube 20 and the detection sensor.
  • the distance between 10 and 10 ensures the sensitivity and detection accuracy of the detection sensor 10 .
  • the guide cylinder 20 can be a stainless steel cylinder, and is preferably made of high temperature resistant non-magnetic stainless steel. When liquid metal leakage occurs, it serves as a sealing boundary for the detection sensor 10 to avoid direct contact between the detection sensor 10 and the liquid metal.
  • the monitoring instrument 30 provides a stable AC power supply for the primary coil 123 of the detection sensor 10, and receives and processes the signal output by the secondary coil 124.
  • the monitoring instrument 30 is provided with a power conversion module and a CPU processing module.
  • the power conversion module is used to provide stable AC power to the primary coil 123.
  • the CPU processing module is mainly used to process the signal output by the secondary coil 124 to determine whether an error occurs. Leakage and output alarm.
  • signal processing and threshold alarm functions can also be integrated and implemented in the plant-wide control system (DCS).
  • DCS plant-wide control system
  • the entire detection sensor 10 is designed to be bendable and freely pluggable in the guide tube 20.
  • the pipe body 11 not only meets the structural strength requirements but also has a certain bending ability, so that the probe assembly 12 can be extended to the monitoring position for detection in long-distance, narrow and curved path environments.
  • the detection sensor 10 continues to work in an environment containing radiation and high temperature.
  • the detection sensor 10 can be extracted from the guide tube 20. Repair or replace.
  • the mutual inductance liquid metal leakage monitoring device of the present invention is suitable for leakage monitoring locations including interlayer gaps of double-layer containers, pipelines, tanks, boxes, connecting flanges, valves, etc.
  • the guide tube 20 is formed in the interlayer gap 41 of the double-layer container 40 when the double-layer container 40 is prepared, and the open end of the guide tube 20 corresponds to the interlayer gap 41.
  • the closed end of the guide tube 20 extends to the bottom of the double-layer container 40.
  • the detection sensor 10 is extended into the interlayer gap 41 of the double-layer container 40 until the probe assembly 12 reaches the closed end of the guide tube 20 .
  • the cable 13 of the detection sensor 10 is connected to the monitoring instrument 30 .
  • the monitoring instrument 30 is started, and a stable AC power supply is provided to the detection sensor 10 through the monitoring instrument 30 .
  • the probe assembly 12 of the detection sensor 10 is in the interlayer gap 41 to monitor whether the liquid metal contained in the double-layer container 40 leaks into the interlayer gap 41 .
  • a high-frequency constant current source is applied to the primary coil 123 to excite the secondary coil 124 to generate an induced electromotive force through alternating magnetic flux.
  • the alternating magnetic flux generated by the primary coil 123 generates eddy currents in the liquid metal, generating a magnetic flux that is opposite to the main flux.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

Disclosed in the present invention are a mutual-inductance type liquid metal leakage monitoring apparatus and the use thereof. The mutual-induction type liquid metal leakage monitoring apparatus comprises a detection sensor used for being inserted into a leakage monitoring position. The detection sensor comprises a bendable tube body, a probe assembly arranged at one end portion of the tube body, and a cable passing through the internal portion of the tube body and connected to the probe assembly. The probe assembly comprises a protective sleeve connected to the tube body, a coil skeleton provided in the protective sleeve, and a primary coil and a secondary coil which are successively wound on the coil skeleton, joints of the primary coil and the secondary coil respectively penetrating through the coil skeleton and being connected to the cable. The mutual-inductance type liquid metal leakage monitoring apparatus of the present invention performs monitoring on the basis of the electromagnetic induction principle, and does not need to make contact with mediums under monitoring, thereby avoiding false triggering problems caused by impurity pollution, insulation aging, etc., and effectively reducing the false alarm rate. The mutual-inductance type liquid metal leakage monitoring apparatus of the present invention has the advantages of high reliability, high sensitivity, etc.

Description

互感式液态金属泄漏监测装置及其应用Mutual induction liquid metal leakage monitoring device and its application 技术领域Technical field
本发明涉及液态金属泄漏监测技术领域，尤其涉及一种互感式液态金属泄漏监测装置及其应用。The invention relates to the technical field of liquid metal leakage monitoring, and in particular to a mutual inductance liquid metal leakage monitoring device and its application.
背景技术Background technique
液态金属具有密度大、温度高、腐蚀性强等特征，使得金属管道、罐箱、连接法兰和阀门等金属部件更容易受到热老化和腐蚀影响，进而导致泄漏。部分化学性质活泼的液态金属，如钠，在与空气接触会发生剧烈的燃烧，导致严重的后果；同时在液态金属快堆中，用于一回路冷却剂的液态金属具有较高的放射性，因此需采取有效的手段对其泄漏进行监测。Liquid metal has the characteristics of high density, high temperature, and strong corrosiveness, which makes metal components such as metal pipes, tanks, connecting flanges, and valves more susceptible to thermal aging and corrosion, which can lead to leakage. Some chemically active liquid metals, such as sodium, will burn violently when in contact with air, leading to serious consequences; at the same time, in liquid metal fast reactors, the liquid metal used as the primary loop coolant has high radioactivity, so Effective means need to be taken to monitor leakage.
针对液态金属泄漏监测，目前主要采用接触式探测器。接触式探测器基于液态金属的导电性，当用于探测的两根导线由于泄漏的液态金属造成短接时发出报警，在钠冷快堆具有成熟而广泛的应用。由于探测器具有体积小、安装灵活的特点，可用于管道、泵、容器和法兰等部件的泄漏探测。但是，由于接触式探测器的探头直径非常小（毫米级），接触式探测器易受杂质干扰、绝缘老化、线芯弯曲误触碰等因素的影响，导致误报率高。For liquid metal leakage monitoring, contact detectors are currently mainly used. The contact detector is based on the conductivity of liquid metal. When the two wires used for detection are short-circuited due to leaking liquid metal, an alarm is issued. It has mature and widespread applications in sodium-cooled fast reactors. Because the detector has the characteristics of small size and flexible installation, it can be used for leak detection of pipelines, pumps, containers, flanges and other components. However, since the diameter of the contact detector's probe is very small (millimeter level), the contact detector is susceptible to interference from impurities, insulation aging, wire core bending and accidental contact, etc., resulting in a high false alarm rate.
此外，由于探测器处于高温辐射环境，探测器探针易发生氧化，形成氧化膜使探针导电性能下降，无法正确地监测泄漏。如果液态金属没充分的润湿电极，可能无法及时探测到液态金属泄漏。在某些环境恶劣的重要监测部位，对探测器灵敏度和准确度具有更高的要求，并且需考虑探测器多样化设计，因而需提出新的监测手段以精准地监测液态金属的泄漏。In addition, because the detector is in a high-temperature radiation environment, the detector probe is prone to oxidation, forming an oxide film that reduces the conductivity of the probe, making it impossible to accurately detect leaks. If the liquid metal does not sufficiently wet the electrode, liquid metal leakage may not be detected in time. In some important monitoring locations with harsh environments, there are higher requirements for detector sensitivity and accuracy, and diversified detector designs need to be considered. Therefore, new monitoring methods need to be proposed to accurately monitor the leakage of liquid metal.
发明内容Contents of the invention
本发明要解决的技术问题在于，提供一种互感式液态金属泄漏监测装置及其应用。The technical problem to be solved by the present invention is to provide a mutual inductance liquid metal leakage monitoring device and its application.
本发明解决其技术问题所采用的技术方案是：提供一种互感式液态金属泄漏监测装置，包括用于插入泄漏监测位置中的探测传感器；The technical solution adopted by the present invention to solve the technical problem is: providing a mutual inductance liquid metal leakage monitoring device, including a detection sensor for inserting into a leakage monitoring position;
所述探测传感器包括可弯曲的管体、设置在所述管体一端部的探头组件、穿设在所述管体内并与所述探头组件连接的电缆；The detection sensor includes a flexible tube body, a probe assembly provided at one end of the tube body, and a cable passed through the tube body and connected to the probe assembly;
所述探头组件包括与所述管体连接的保护套、设置在所述保护套内的线圈骨架、依次缠绕在所述线圈骨架上的初级线圈和次级线圈；所述初级线圈和次级线圈的接头分别穿过所述线圈骨架，连接所述电缆。The probe assembly includes a protective sheath connected to the tube body, a coil bobbin arranged in the protective sheath, a primary coil and a secondary coil wound around the coil bobbin in turn; the primary coil and the secondary coil The joints pass through the coil bobbin respectively and connect the cables.
优选地，所述探头组件的外径≤26mm。Preferably, the outer diameter of the probe assembly is ≤26mm.
优选地， 所述保护套朝向所述管体的端部设有凸出的第一环形台阶，所述第一环形台阶上设有外螺纹；所述管体朝向所述保护套的端部设有凸出的第二环形台阶，所述第二环形台阶上设有与所述外螺纹相适配的内螺纹；Preferably, the protective sleeve is provided with a protruding first annular step toward the end of the pipe body, and the first annular step is provided with external threads; the pipe body is provided with a protruding first annular step toward the end of the protective sleeve. There is a protruding second annular step, and the second annular step is provided with an internal thread that matches the external thread;
所述第一环形台阶和第二环形台阶通过螺纹配合紧密连接。The first annular step and the second annular step are tightly connected through threaded fit.
所述管体内设有若干沿其轴向间隔排布的支撑结构，所述支撑结构连接在所述管体的内壁面和电缆的外周面之间，对所述电缆进行定位支撑。The pipe body is provided with a number of support structures arranged at intervals along its axial direction. The support structures are connected between the inner wall surface of the pipe body and the outer peripheral surface of the cable to position and support the cable.
优选地，所述管体为金属软管。Preferably, the pipe body is a metal hose.
优选地，所述保护套采用耐高温的无磁不锈钢制成。Preferably, the protective cover is made of high temperature resistant non-magnetic stainless steel.
优选地，所述初级线圈和次级线圈分别采用不锈钢铠装氧化镁绝缘的单芯镍电缆缠绕形成。Preferably, the primary coil and the secondary coil are respectively wound by stainless steel armored magnesium oxide insulated single-core nickel cables.
优选地，所述互感式液态金属泄漏监测装置还包括布置在泄漏监测位置，用于所述探测传感器插入其中的导向筒。Preferably, the mutual inductance liquid metal leakage monitoring device further includes a guide tube arranged at the leakage monitoring position for the detection sensor to be inserted into it.
优选地，所述导向筒为一端封闭、另一端开放的筒体结构；Preferably, the guide tube is a cylinder structure with one end closed and the other end open;
所述探测传感器的探头组件插入至所述导向筒的封闭端内。The probe assembly of the detection sensor is inserted into the closed end of the guide tube.
优选地，所述互感式液态金属泄漏监测装置还包括与所述探测传感器连接的监测仪表；所述监测仪表为所述探测传感器的初级线圈提供稳定的交流电源，接收并处理所述次级线圈输出的信号。Preferably, the mutual inductance liquid metal leakage monitoring device further includes a monitoring instrument connected to the detection sensor; the monitoring instrument provides stable AC power to the primary coil of the detection sensor, and receives and processes the secondary coil. output signal.
优选地，所述泄漏监测位置包括双层容器的夹层缝隙、管道、罐体、箱体、连接法兰、阀门。Preferably, the leakage monitoring locations include interlayer gaps of double-layered containers, pipes, tanks, boxes, connecting flanges, and valves.
本发明还提供一种互感式液态金属泄漏监测装置的应用，将所述探测传感器伸入至装液态金属的双层容器的夹层缝隙中。The invention also provides an application of a mutual inductance liquid metal leakage monitoring device, in which the detection sensor is extended into the interlayer gap of a double-layer container containing liquid metal.
本发明的互感式液态金属泄漏监测装置，基于电磁感应原理进行监测，无需接触被测介质，避免由于杂质污染、绝缘老化等导致的误触发问题，有效降低误报率；具有可靠性高、灵敏度高等优点。The mutual inductance liquid metal leakage monitoring device of the present invention performs monitoring based on the principle of electromagnetic induction without contacting the measured medium, avoids false triggering problems caused by impurity contamination, insulation aging, etc., and effectively reduces the false alarm rate; it has high reliability and sensitivity High advantages.
附图说明Description of the drawings
下面将结合附图及实施例对本发明作进一步说明，附图中：The present invention will be further described below in conjunction with the accompanying drawings and examples. In the accompanying drawings:
图1是本发明一实施例的互感式液态金属泄漏监测装置在双层容器上的剖面结构示意图；Figure 1 is a schematic cross-sectional structural diagram of a mutual inductance liquid metal leakage monitoring device on a double-layer container according to an embodiment of the present invention;
图2是本发明一实施例的互感式液态金属泄漏监测装置中探测传感器的剖面结构示意图。Figure 2 is a schematic cross-sectional structural diagram of a detection sensor in a mutual inductance liquid metal leakage monitoring device according to an embodiment of the present invention.
具体实施方式Detailed ways
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
参考图1-图2，本发明一实施例的互感式液态金属泄漏监测装置，包括探测传感器10、导向筒20以及监测仪表30。Referring to Figures 1-2, a mutual inductance liquid metal leakage monitoring device according to an embodiment of the present invention includes a detection sensor 10, a guide tube 20 and a monitoring instrument 30.
探测传感器10用于插入泄漏监测位置中。导向筒20用于设置在泄漏监测位置处，为探测传感器10提供一个探测通道，同时将探测传感器10与被测介质（如液态金属）进行隔离，避免被测介质接触探测传感器10而污染或腐蚀探测传感器10。The detection sensor 10 is intended to be inserted into the leak monitoring location. The guide tube 20 is used to be arranged at the leakage monitoring position to provide a detection channel for the detection sensor 10 and at the same time isolate the detection sensor 10 from the measured medium (such as liquid metal) to prevent the measured medium from contacting the detection sensor 10 and causing contamination or corrosion. Detect sensor 10.
监测仪表30与探测传感器10连接，为探测传感器10提供稳定的交流电源，并且接收来自探测传感器10输出的信号，根据信号判断泄漏监测位置是否发生泄漏。在判断为泄漏的情况下，还可发出警报。The monitoring instrument 30 is connected to the detection sensor 10, provides a stable AC power supply to the detection sensor 10, receives the signal output from the detection sensor 10, and determines whether leakage occurs at the leakage monitoring location based on the signal. In the event of a leak, an alarm can also be issued.
其中，探测传感器10包括管体11、探头组件12以及电缆13。探头组件12连接在管体11的一端，作为探测传感器10的探头部分。电缆13穿设在管体11内并与探头组件12连接。电缆13远离探头组件12的一端可穿出管体11外，以与监测仪表30连接。The detection sensor 10 includes a pipe body 11 , a probe assembly 12 and a cable 13 . The probe assembly 12 is connected to one end of the tube body 11 and serves as the probe part of the detection sensor 10 . The cable 13 is passed through the pipe body 11 and connected to the probe assembly 12 . The end of the cable 13 away from the probe assembly 12 can pass out of the pipe body 11 to connect with the monitoring instrument 30 .
管体11可根据泄漏监测位置设置不同长度，并且具备弯曲能力，实现在弯曲路径中的布置。管体11优选为金属软管。The pipe body 11 can be set to different lengths according to the leakage monitoring position, and has the ability to be bent, so that it can be arranged in a curved path. The pipe body 11 is preferably a metal hose.
为将电缆13定位在管体11内，避免在管体11内移动或堆积等，管体11内可设有若干沿其轴向间隔排布的支撑结构14，支撑结构14连接在管体11的内壁面和电缆13的外周面之间，对电缆13进行定位支撑。In order to position the cable 13 in the pipe body 11 and avoid movement or accumulation in the pipe body 11, the pipe body 11 can be provided with a number of support structures 14 arranged at intervals along its axial direction. The support structures 14 are connected to the pipe body 11. Between the inner wall surface and the outer peripheral surface of the cable 13, the cable 13 is positioned and supported.
作为选择，支撑结构14可以是环形支架、环形支撑片等，其外周固定在管体11的内壁面上，中部孔供电缆13穿过，并且与电缆13之间为紧配合。Alternatively, the support structure 14 can be an annular bracket, an annular support piece, etc., with its outer periphery fixed on the inner wall of the pipe body 11 , a middle hole for the cable 13 to pass through, and a tight fit with the cable 13 .
本发明中，探头组件12包括与管体11连接的保护套121、设置在保护套121内的线圈骨架122、依次缠绕在线圈骨架122上的初级线圈123和次级线圈124。初级线圈123和次级线圈124的接头分别穿过线圈骨架122，可再通过导线连接电缆13。In the present invention, the probe assembly 12 includes a protective sheath 121 connected to the tube body 11 , a coil bobbin 122 disposed in the protective sheath 121 , and a primary coil 123 and a secondary coil 124 wound around the coil bobbin 122 in sequence. The joints of the primary coil 123 and the secondary coil 124 pass through the coil bobbin 122 respectively, and can be connected to the cable 13 through wires.
具体地，保护套121为两端开放的筒状体，轴向连接在管体11的端部。作为保护套121和管体11的选择性连接方式，在图2中所示实施例中，保护套121朝向管体11的端部设有凸出的第一环形台阶125，第一环形台阶125上设有外螺纹（未图示）；管体11朝向保护套121的端部设有凸出的第二环形台阶111，第二环形台阶111上设有与外螺纹相适配的内螺纹（未图示）；第一环形台阶125和第二环形台阶111通过螺纹配合紧密连接，实现了保护套121与管体11在轴向上的连接。Specifically, the protective sleeve 121 is a cylindrical body with both ends open, and is axially connected to the end of the tube body 11 . As a selective connection method between the protective sleeve 121 and the pipe body 11, in the embodiment shown in FIG. 2, the protective sleeve 121 is provided with a protruding first annular step 125 toward the end of the pipe body 11. The first annular step 125 is provided with external threads (not shown); the end of the pipe body 11 facing the protective sleeve 121 is provided with a protruding second annular step 111, and the second annular step 111 is provided with an internal thread that matches the external thread ( (not shown); the first annular step 125 and the second annular step 111 are tightly connected through threaded fit, thereby realizing the axial connection between the protective sleeve 121 and the pipe body 11 .
在其他实施例中，保护套121和管体11之间还可通过卡套、螺纹、焊接、过盈配合等方式实现连接。In other embodiments, the protective sheath 121 and the pipe body 11 can also be connected through ferrules, threads, welding, interference fit, etc.
线圈骨架122紧密配合在保护套121内，通过保护套121对其进行定位支撑。如图2所示，线圈骨架122可为工字型骨架，初级线圈123紧密缠绕在线圈骨架122上，次级线圈124紧密缠绕在初级线圈123外侧，初级线圈123和次级线圈124均处于工字型骨架的凹部内。The coil bobbin 122 is tightly fitted in the protective sleeve 121 and is positioned and supported by the protective sleeve 121 . As shown in Figure 2, the coil bobbin 122 may be an I-shaped bobbin. The primary coil 123 is tightly wound on the coil bobbin 122, and the secondary coil 124 is tightly wound around the outside of the primary coil 123. Both the primary coil 123 and the secondary coil 124 are at work. In the recessed part of the font skeleton.
为与电缆13连接，线圈骨架122朝向电缆13的端面上设有通孔（未图示），初级线圈123和次级线圈124的接头分别穿过通孔并与电缆13连接。In order to be connected to the cable 13, a through hole (not shown) is provided on the end surface of the coil bobbin 122 facing the cable 13. The joints of the primary coil 123 and the secondary coil 124 respectively pass through the through holes and are connected to the cable 13.
在材料方面，保护套121采用耐高温的无磁不锈钢制成，确保保护套121具有较高的透磁性能，以使在保护套121中的磁损失率降到最低。线圈骨架122采用耐高温、弱磁导性的304不锈钢制成。初级线圈123和次级线圈124分别采用不锈钢铠装氧化镁绝缘的单芯镍电缆缠绕形成。初级线圈123和次级线圈124的线缆直径优选限制在1mm内。In terms of materials, the protective cover 121 is made of high-temperature resistant non-magnetic stainless steel to ensure that the protective cover 121 has high magnetic permeability and to minimize the magnetic loss rate in the protective cover 121 . The coil bobbin 122 is made of 304 stainless steel with high temperature resistance and weak magnetic permeability. The primary coil 123 and the secondary coil 124 are respectively wound by stainless steel-armored magnesium oxide insulated single-core nickel cables. The cable diameter of the primary coil 123 and the secondary coil 124 is preferably limited to 1 mm.
进一步地，为了方便探测传感器在狭窄环境中使用，探头组件12的尺寸在满足工艺和性能要求前提下尽可能小设置，例如探头组件12的外径≤26mm，即探测传感器10的探头部分的外径≤26mm。Furthermore, in order to facilitate the use of the detection sensor in a narrow environment, the size of the probe assembly 12 is set as small as possible while meeting the process and performance requirements. For example, the outer diameter of the probe assembly 12 is ≤ 26 mm, that is, the outer diameter of the probe part of the detection sensor 10 Diameter≤26mm.
线圈骨架122的尺寸、初级线圈123和次级线圈124的线圈层数和匝数，电缆13长度、电源频率等可根据监测环境进行调整，以适应不同环境的需求。The size of the coil bobbin 122, the number of coil layers and turns of the primary coil 123 and the secondary coil 124, the length of the cable 13, the power frequency, etc. can be adjusted according to the monitoring environment to adapt to the needs of different environments.
导向筒20为一端封闭、另一端开放的硬质筒体结构，具有一定的结构强度。导向筒20内部中空的通道形成探测通道，用于探测传感器10插入其中。导向筒20作为探测传感器10的保护外壳，对探测传感器10起到导向、定位以及隔离被测介质（如液态金属）的作用，可根据泄漏监测位置设置不同长度。The guide tube 20 is a rigid cylinder structure with one end closed and the other end open, and has a certain structural strength. The hollow passage inside the guide cylinder 20 forms a detection passage for the detection sensor 10 to be inserted therein. As a protective shell of the detection sensor 10, the guide tube 20 plays a role in guiding, positioning and isolating the measured medium (such as liquid metal) for the detection sensor 10. It can be set to different lengths according to the leakage monitoring position.
导向筒20可固定或成型在泄漏监测位置所在的器件上，如容器、管道、阀门等器件上。导向筒20的封闭端应能够处于泄漏监测位置的监测点。The guide tube 20 can be fixed or formed on the device where the leakage monitoring position is located, such as containers, pipes, valves and other devices. The closed end of the guide tube 20 should be able to be at the monitoring point of the leakage monitoring position.
探测传感器10插入导向筒20时，以探测组件12从导向筒20的开放端插入，直至探头组件12达到导向筒20的封闭端内。导向筒20的内径对应探测传感器10的外径设置，以稍大于探测传感器10的外径设置为优，在方便探测传感器10自由插拔的同时，尽量减少导向筒20外部被测介质与探测传感器10之间的距离，确保探测传感器10的灵敏度及探测准确性。When the detection sensor 10 is inserted into the guide tube 20 , the detection assembly 12 is inserted from the open end of the guide tube 20 until the probe assembly 12 reaches the closed end of the guide tube 20 . The inner diameter of the guide tube 20 is set corresponding to the outer diameter of the detection sensor 10, and is preferably slightly larger than the outer diameter of the detection sensor 10. This facilitates the free insertion and removal of the detection sensor 10 while minimizing the contact between the measured medium outside the guide tube 20 and the detection sensor. The distance between 10 and 10 ensures the sensitivity and detection accuracy of the detection sensor 10 .
导向筒20可为不锈钢筒体，进一步优选采用耐高温的无磁不锈钢制成，发生液态金属泄漏时，充当探测传感器10的密封边界，避免探测传感器10与液态金属直接接触。The guide cylinder 20 can be a stainless steel cylinder, and is preferably made of high temperature resistant non-magnetic stainless steel. When liquid metal leakage occurs, it serves as a sealing boundary for the detection sensor 10 to avoid direct contact between the detection sensor 10 and the liquid metal.
结合探头组件12的结构形式，监测仪表30为探测传感器10的初级线圈123提供稳定的交流电源，接收并处理次级线圈124输出的信号。具体地，该监测仪表30设有电源转换模块和CPU处理模块，电源转换模块用于给初级线圈123提供稳定的交流电源，CPU处理模块主要用于处理次级线圈124输出的信号，判断是否发生泄漏并输出报警。此外，信号处理和阈值报警功能后续也可集中在全厂控制系统(DCS)集成实现。Combined with the structural form of the probe assembly 12, the monitoring instrument 30 provides a stable AC power supply for the primary coil 123 of the detection sensor 10, and receives and processes the signal output by the secondary coil 124. Specifically, the monitoring instrument 30 is provided with a power conversion module and a CPU processing module. The power conversion module is used to provide stable AC power to the primary coil 123. The CPU processing module is mainly used to process the signal output by the secondary coil 124 to determine whether an error occurs. Leakage and output alarm. In addition, signal processing and threshold alarm functions can also be integrated and implemented in the plant-wide control system (DCS).
探测传感器10中，通过管体11的可弯曲设置，使得探测传感器10整体在导向筒20内为可弯曲自由插拔设计。管体11满足结构强度要求的同时具备一定的弯曲能力，以便在长距离、狭窄和弯曲路径环境中将探头组件12伸到监测位置探测。正常运行工况下，探测传感器10在含辐射、高温环境中持续工作，在探测传感器10由于长时间运行导致的性能下降或探测传感器10故障等情况下，探测传感器10可从导向筒20中抽出进行维修或更换。In the detection sensor 10, due to the bendable arrangement of the tube body 11, the entire detection sensor 10 is designed to be bendable and freely pluggable in the guide tube 20. The pipe body 11 not only meets the structural strength requirements but also has a certain bending ability, so that the probe assembly 12 can be extended to the monitoring position for detection in long-distance, narrow and curved path environments. Under normal operating conditions, the detection sensor 10 continues to work in an environment containing radiation and high temperature. In the case of performance degradation of the detection sensor 10 due to long-term operation or failure of the detection sensor 10, etc., the detection sensor 10 can be extracted from the guide tube 20. Repair or replace.
本发明的互感式液态金属泄漏监测装置，适用的泄漏监测位置包括双层容器的夹层缝隙、管道、罐体、箱体、连接法兰、阀门等等。The mutual inductance liquid metal leakage monitoring device of the present invention is suitable for leakage monitoring locations including interlayer gaps of double-layer containers, pipelines, tanks, boxes, connecting flanges, valves, etc.
下面以本发明的互感式液态金属泄漏监测装置在双层容器40上的应用为例进行说明。The following describes the application of the mutual inductance liquid metal leakage monitoring device of the present invention on the double-layer container 40 as an example.
如图1所示，根据双层容器40的夹层缝隙41的深度及弯曲度，导向筒20在双层容器40制备时成型在其夹层缝隙41中，导向筒20的开放端对应在夹层缝隙41的开口处，导向筒20的封闭端延伸至双层容器40的底部。将探测传感器10伸入至双层容器40的夹层缝隙41中，直至探头组件12到达导向筒20的封闭端。As shown in Figure 1, according to the depth and curvature of the interlayer gap 41 of the double-layer container 40, the guide tube 20 is formed in the interlayer gap 41 of the double-layer container 40 when the double-layer container 40 is prepared, and the open end of the guide tube 20 corresponds to the interlayer gap 41. At the opening, the closed end of the guide tube 20 extends to the bottom of the double-layer container 40. The detection sensor 10 is extended into the interlayer gap 41 of the double-layer container 40 until the probe assembly 12 reaches the closed end of the guide tube 20 .
探测传感器10的电缆13连接至监测仪表30。启动监测仪表30，通过监测仪表30为探测传感器10提供稳定的交流电源。探测传感器10的探头组件12在夹层缝隙41中，对双层容器40所装的液态金属是否泄漏至夹层缝隙41中进行监测。其中，在初级线圈123施加高频恒流源激励，使次级线圈124通过交变磁通产生感应电动势。当发生液态金属泄漏时，初级线圈123产生的交变磁通在液态金属产生涡流，产生与主通量反向的磁通，通过次级线圈124的净磁通量减少，次级线圈124的电动势降低，从而通过测量次级线圈124电动势可判断是否发生泄漏。即：当监测仪表30接收到的次级线圈124输出信号（电动势对应信号），处理信号获得次级线圈124的电动势，通过对比电动势，从电动势是否降低判断是否发生泄漏。当电动势降低，则说明发生液态金属泄漏。The cable 13 of the detection sensor 10 is connected to the monitoring instrument 30 . The monitoring instrument 30 is started, and a stable AC power supply is provided to the detection sensor 10 through the monitoring instrument 30 . The probe assembly 12 of the detection sensor 10 is in the interlayer gap 41 to monitor whether the liquid metal contained in the double-layer container 40 leaks into the interlayer gap 41 . Among them, a high-frequency constant current source is applied to the primary coil 123 to excite the secondary coil 124 to generate an induced electromotive force through alternating magnetic flux. When liquid metal leakage occurs, the alternating magnetic flux generated by the primary coil 123 generates eddy currents in the liquid metal, generating a magnetic flux that is opposite to the main flux. The net magnetic flux passing through the secondary coil 124 decreases, and the electromotive force of the secondary coil 124 decreases. , so that whether leakage occurs can be determined by measuring the electromotive force of the secondary coil 124. That is, when the monitoring instrument 30 receives the output signal of the secondary coil 124 (electromotive force corresponding signal), the signal is processed to obtain the electromotive force of the secondary coil 124, and by comparing the electromotive force, it is determined whether leakage occurs based on whether the electromotive force decreases. When the electromotive force decreases, liquid metal leakage occurs.
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。The above are only examples of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly applied to other related technologies fields are equally included in the scope of patent protection of the present invention.

Claims (12)

  1. 一种互感式液态金属泄漏监测装置，其特征在于，包括用于插入泄漏监测位置中的探测传感器；A mutual inductance liquid metal leakage monitoring device, characterized in that it includes a detection sensor for inserting into a leakage monitoring position;
    所述探测传感器包括可弯曲的管体、设置在所述管体一端部的探头组件、穿设在所述管体内并与所述探头组件连接的电缆；The detection sensor includes a flexible tube body, a probe assembly provided at one end of the tube body, and a cable passed through the tube body and connected to the probe assembly;
    所述探头组件包括与所述管体连接的保护套、设置在所述保护套内的线圈骨架、依次缠绕在所述线圈骨架上的初级线圈和次级线圈；所述初级线圈和次级线圈的接头分别穿过所述线圈骨架，连接所述电缆。The probe assembly includes a protective sheath connected to the tube body, a coil bobbin arranged in the protective sheath, a primary coil and a secondary coil wound around the coil bobbin in turn; the primary coil and the secondary coil The joints pass through the coil bobbin respectively and connect the cables.
  2. 根据权利要求1所述的互感式液态金属泄漏监测装置，其特征在于，所述探头组件的外径≤26mm。The mutual inductance liquid metal leakage monitoring device according to claim 1, wherein the outer diameter of the probe assembly is ≤26 mm.
  3. 根据权利要求1所述的互感式液态金属泄漏监测装置，其特征在于， 所述保护套朝向所述管体的端部设有凸出的第一环形台阶，所述第一环形台阶上设有外螺纹；所述管体朝向所述保护套的端部设有凸出的第二环形台阶，所述第二环形台阶上设有与所述外螺纹相适配的内螺纹；The mutual inductance liquid metal leakage monitoring device according to claim 1, characterized in that, the protective sleeve is provided with a protruding first annular step toward the end of the pipe body, and the first annular step is provided with External thread; the end of the pipe body facing the protective sheath is provided with a protruding second annular step, and the second annular step is provided with an internal thread that matches the external thread;
    所述第一环形台阶和第二环形台阶通过螺纹配合紧密连接。The first annular step and the second annular step are tightly connected through threaded fit.
  4. 根据权利要求1所述的互感式液态金属泄漏监测装置，其特征在于，所述管体内设有若干沿其轴向间隔排布的支撑结构，所述支撑结构连接在所述管体的内壁面和电缆的外周面之间，对所述电缆进行定位支撑。The mutual induction liquid metal leakage monitoring device according to claim 1, characterized in that the pipe body is provided with a plurality of support structures arranged at intervals along its axial direction, and the support structures are connected to the inner wall surface of the pipe body. and the outer peripheral surface of the cable to position and support the cable.
  5. 根据权利要求1所述的互感式液态金属泄漏监测装置，其特征在于，所述管体为金属软管。The mutual inductance liquid metal leakage monitoring device according to claim 1, wherein the pipe body is a metal hose.
  6. 根据权利要求1所述的互感式液态金属泄漏监测装置，其特征在于，所述保护套采用耐高温的无磁不锈钢制成。The mutual inductance liquid metal leakage monitoring device according to claim 1, characterized in that the protective cover is made of high temperature resistant non-magnetic stainless steel.
  7. 根据权利要求1所述的互感式液态金属泄漏监测装置，其特征在于，所述初级线圈和次级线圈分别采用不锈钢铠装氧化镁绝缘的单芯镍电缆缠绕形成。The mutual inductance liquid metal leakage monitoring device according to claim 1, characterized in that the primary coil and the secondary coil are respectively wound by stainless steel armored magnesium oxide insulated single-core nickel cables.
  8. 根据权利要求1所述的互感式液态金属泄漏监测装置，其特征在于，所述互感式液态金属泄漏监测装置还包括布置在泄漏监测位置，用于所述探测传感器插入其中的导向筒。The mutual inductance liquid metal leakage monitoring device according to claim 1, characterized in that the mutual inductance liquid metal leakage monitoring device further includes a guide tube arranged at the leakage monitoring position for the detection sensor to be inserted into it.
  9. 根据权利要求8所述的互感式液态金属泄漏监测装置，其特征在于，所述导向筒为一端封闭、另一端开放的筒体结构；The mutual induction liquid metal leakage monitoring device according to claim 8, wherein the guide tube is a cylinder structure with one end closed and the other end open;
    所述探测传感器的探头组件插入至所述导向筒的封闭端内。The probe assembly of the detection sensor is inserted into the closed end of the guide tube.
  10. 根据权利要求1-9任一项所述的互感式液态金属泄漏监测装置，其特征在于，所述互感式液态金属泄漏监测装置还包括与所述探测传感器连接的监测仪表；所述监测仪表为所述探测传感器的初级线圈提供稳定的交流电源，接收并处理所述次级线圈输出的信号。The mutual inductance liquid metal leakage monitoring device according to any one of claims 1 to 9, characterized in that the mutual inductance liquid metal leakage monitoring device further includes a monitoring instrument connected to the detection sensor; the monitoring instrument is The primary coil of the detection sensor provides stable AC power, receives and processes the signal output by the secondary coil.
  11. 根据权利要求1-9任一项所述的互感式液态金属泄漏监测装置，其特征在于，所述泄漏监测位置包括双层容器的夹层缝隙、管道、罐体、箱体、连接法兰、阀门。The mutual induction liquid metal leakage monitoring device according to any one of claims 1 to 9, characterized in that the leakage monitoring location includes a sandwich gap of a double-layer container, a pipe, a tank, a box, a connecting flange, and a valve. .
  12. 一种权利要求1-11任一项所述的互感式液态金属泄漏监测装置的应用，其特征在于，将所述探测传感器伸入至装液态金属的双层容器的夹层缝隙中。An application of the mutual inductance liquid metal leakage monitoring device according to any one of claims 1 to 11, characterized in that the detection sensor is extended into the interlayer gap of a double-layer container containing liquid metal.
PCT/CN2023/109413 2022-08-01 2023-07-26 Mutual-induction type liquid metal leakage monitoring apparatus and use thereof WO2024027542A1 (en)

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Publication number Priority date Publication date Assignee Title
CN115326321A (en) * 2022-08-01 2022-11-11 中广核研究院有限公司 Mutual inductance type liquid metal leakage monitoring device and application thereof

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340725A (en) * 1963-12-10 1967-09-12 Atomic Energy Authority Uk Liquid metal monitor method
EP1229313A2 (en) * 2001-02-02 2002-08-07 Bdh Industries Inc. System and method for measuring liquid metal level
CN201828671U (en) * 2010-03-08 2011-05-11 胡晓剑 Cable identifying probe
CN102903407A (en) * 2012-10-15 2013-01-30 中广核检测技术有限公司 Flexible eddy current testing probe for heat transfer pipe of steam generator of nuclear power plant
CN105212902A (en) * 2014-10-22 2016-01-06 苏州亘科医疗科技有限公司 Sensor Yarn guide component
CN105318935A (en) * 2015-12-04 2016-02-10 中国原子能科学研究院 Wide-range mutual-induction type liquid metal liquidometer
CN105352562A (en) * 2015-12-04 2016-02-24 中国原子能科学研究院 Induction type servo liquid metal liquid level measurement device and method
CN105717545A (en) * 2016-02-22 2016-06-29 田志恒 Device for monitoring whether liquid metal exists in pipeline
WO2019121877A1 (en) * 2017-12-22 2019-06-27 Commissariat A L'energie Atomique Et Aux Energies Alternatives System for detecting a leakage of an electrically conductive fluid from a casing
CN109979738A (en) * 2019-04-16 2019-07-05 大连世有电力科技有限公司 Transformer temperature controller based on optical fiber temperature-measurement
CN112944222A (en) * 2021-03-30 2021-06-11 上海传输线研究所（中国电子科技集团公司第二十三研究所） Sensor suitable for long-distance submarine pipeline leakage monitoring and monitoring method thereof
CN113576702A (en) * 2021-08-04 2021-11-02 桂林市啄木鸟医疗器械有限公司 Implant detector
CN115326321A (en) * 2022-08-01 2022-11-11 中广核研究院有限公司 Mutual inductance type liquid metal leakage monitoring device and application thereof

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340725A (en) * 1963-12-10 1967-09-12 Atomic Energy Authority Uk Liquid metal monitor method
EP1229313A2 (en) * 2001-02-02 2002-08-07 Bdh Industries Inc. System and method for measuring liquid metal level
CN201828671U (en) * 2010-03-08 2011-05-11 胡晓剑 Cable identifying probe
CN102903407A (en) * 2012-10-15 2013-01-30 中广核检测技术有限公司 Flexible eddy current testing probe for heat transfer pipe of steam generator of nuclear power plant
CN105212902A (en) * 2014-10-22 2016-01-06 苏州亘科医疗科技有限公司 Sensor Yarn guide component
CN105318935A (en) * 2015-12-04 2016-02-10 中国原子能科学研究院 Wide-range mutual-induction type liquid metal liquidometer
CN105352562A (en) * 2015-12-04 2016-02-24 中国原子能科学研究院 Induction type servo liquid metal liquid level measurement device and method
CN105717545A (en) * 2016-02-22 2016-06-29 田志恒 Device for monitoring whether liquid metal exists in pipeline
WO2019121877A1 (en) * 2017-12-22 2019-06-27 Commissariat A L'energie Atomique Et Aux Energies Alternatives System for detecting a leakage of an electrically conductive fluid from a casing
CN109979738A (en) * 2019-04-16 2019-07-05 大连世有电力科技有限公司 Transformer temperature controller based on optical fiber temperature-measurement
CN112944222A (en) * 2021-03-30 2021-06-11 上海传输线研究所（中国电子科技集团公司第二十三研究所） Sensor suitable for long-distance submarine pipeline leakage monitoring and monitoring method thereof
CN113576702A (en) * 2021-08-04 2021-11-02 桂林市啄木鸟医疗器械有限公司 Implant detector
CN115326321A (en) * 2022-08-01 2022-11-11 中广核研究院有限公司 Mutual inductance type liquid metal leakage monitoring device and application thereof

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