Device for detecting metal leakage and method for detecting metal leakage

Abstract

The embodiment of the invention relates to the technical field of metal leakage detection, in particular to a device for detecting metal leakage and a method for detecting metal leakage. The detection assembly is arranged to be insulated from a solid conductive object in the detected object and to be in contact with liquid metal in the detected object so as to detect the existence of the liquid metal; the output part is in communication connection with the detection assembly through the communication assembly and is used for outputting prompt information when the detection assembly detects the existence of the liquid metal; the power supply is used for supplying power to the detection assembly and the output part. According to the device provided by the embodiment of the invention, the occurrence of false alarms can be reduced, the reliability is relatively high, the installation is relatively simple and convenient, and when the detection assembly detects the existence of the liquid metal, the output piece can be utilized to output prompt information so as to remind an operator of the metal leakage condition in time, so that the operation safety of a reactor is ensured.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of metal leakage detection, and in particular to a device for detecting metal leakage and a method for detecting metal leakage. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] A fast breeder reactor is a reactor that uses fast neutron breeding to improve the utilization rate of nuclear fuel. It mainly uses metallic sodium as the main coolant. In a fast breeder reactor, metallic sodium always flows in the pipes and equipment in the reactor in a high-temperature, high-velocity liquid form. Because metallic sodium has active chemical properties, when the sodium-related pipes or equipment are damaged, the high-temperature sodium leaks into the air and reacts quickly with oxygen, resulting in a sodium fire accident. If it is not monitored and prevented, it will not only damage the equipment, but also affect the safe operation of the reactor.

[0004] At present, in order to detect the leakage of metallic sodium, a sodium leakage detection device is usually installed on sodium-related pipelines or equipment, so as to timely detect whether a sodium leakage accident occurs and send out an alarm signal. However, the existing metal leakage detection device still has many shortcomings. Summary of the invention

[0005] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0006] In a first aspect, an embodiment of the present application provides a device for detecting metal leakage, comprising: a communication component; a detection component, the detection component is configured to be insulated from a solid conductive object in the object to be detected and to contact liquid metal in the object to be detected to detect the presence of liquid metal; an output component, the output component is communicatively connected to the detection component through the communication component, and is used to output prompt information when the detection component detects the presence of liquid metal; a power supply, used to power the detection component and the output component.

[0007] The embodiments of the present application configure the detection component to be insulated from the solid conductive objects in the object to be measured and to be in contact with the liquid metal in the object to be measured. This eliminates the need to avoid high-temperature and conductive objects such as electric heaters and brackets in the object to be measured during installation, thereby helping to reduce the occurrence of false alarms. The reliability is relatively high and the installation is relatively simple. When the detection component detects the presence of liquid metal, an output device can be used to output a prompt message to promptly alert the operator of a metal leakage, thereby ensuring the safe operation of the reactor.

[0008] On the second aspect, an embodiment of the present application also provides a method for detecting metal leakage, which is applied to the device of the embodiment of the present application, and includes the following steps: S1. Fix the communication component and the object to be measured by using a fixing member; S2. Turn on the power; S3. Detect the presence of liquid metal in the object to be measured by using a detection component; S4. When the detection component detects the presence of liquid metal, output a prompt message by using an output member; S5. Determine whether a metal leakage occurs in the object to be measured based on the prompt message.

[0009] These and other advantages of the present application will become more apparent through the following detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to further illustrate the above and other advantages and features of the present application, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. The accompanying drawings together with the following detailed description are included in this specification and form a part of this specification. Elements with the same function and structure are represented by the same reference numerals. It should be understood that these drawings only describe typical examples of the present application and should not be regarded as limiting the scope of the present application.

[0011] Figure 1 is a schematic structural diagram of a device for detecting metal leakage according to an embodiment of the present application;

[0012] Figure 2 is a schematic structural diagram of a detection assembly including a plurality of detection members and a plurality of insulating members according to an embodiment of the present application;

[0013] Figure 3 It is a flow chart of a method for detecting metal leakage according to an embodiment of the present application.

[0014] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding.

[0015] Description of reference numerals:

[0016] 10. Detection device;

[0017] 11. Communication component; 111. Communication component; 112. Connecting component; 1121. Negative terminal; 1122. Positive terminal; 1123. Connecting terminal; 113. Negative line; 12. Detection component; 121. Insulating component; 122. Detection component; 13. Output component; 14. Power supply; 15. Fixing component;

[0018] 20. Object to be measured. DETAILED DESCRIPTION

[0019] Exemplary embodiments of the present application will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this application.

[0020] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in this application should have the common meanings understood by persons with ordinary skills in the field to which this application belongs.

[0022] In the description of the embodiments of the present application, “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In the related art, most of the distributed ceramic bead detection devices are used as sodium leakage detection devices to detect metallic sodium. The structure of the distributed ceramic bead detection device is relatively simple. Its main components are ceramic insulators and two metal steel wires. The metal steel wires are connected to an external power supply. When sodium leakage occurs, the two metal steel wires are short-circuited, and the circuit of the entire detection device is turned on, so that the alarm device issues a sodium leakage alarm. However, in actual applications, due to the large span of pipe diameter specifications and complex pipelines of sodium-related pipelines, inadequate pipeline cleaning, and the need to isolate the heating wire, the distributed ceramic bead detection device needs to be assembled on-site and the installation is relatively complicated. There are many false alarms during operation, and the detection effect is not ideal.

[0024] In view of the above technical problems, an embodiment of the present application provides a device for detecting metal leakage. Figure 1 is a schematic diagram of the structure of a device for detecting metal leakage (hereinafter referred to as a detection device) according to an embodiment of the present application, such as Figure 1 As shown, the detection device 10 includes a communication component 11 , a detection component 12 , an output component 13 and a power supply 14 .

[0025] The detection component 12 is configured to be insulated from the solid conductive object in the detected object 20 and to be in contact with the liquid metal in the detected object 20 to detect the existence of the liquid metal.

[0026] The output component 13 is communicatively connected with the detection component 12 via the communication component 11, and is used for outputting prompt information when the detection component 12 detects the presence of liquid metal.

[0027] The power supply 14 is used to supply power to the detection component 12 and the output component 13 .

[0028] The embodiment of the present application arranges the detection component 12 to be insulated from the solid conductive objects in the object to be measured 20 and to be in contact with the liquid metal in the object to be measured 20. This makes it unnecessary to avoid high-temperature and conductive objects such as electric heaters and brackets in the object to be measured 20 during the installation process, which helps to reduce the occurrence of false alarms. The reliability is relatively high and the installation is relatively simple. When the detection component 12 detects the presence of liquid metal, the output component 13 can be used to output a prompt message to promptly remind the operator of metal leakage, which is beneficial to ensuring the safe operation of the reactor.

[0029] In some embodiments, the output element 13 may be an audible and visual alarm, which may emit sound and light to alert the operator when metal leakage occurs.

[0030] In some embodiments, the power supply 14 is a DC 24V power supply 14 .

[0031] In some embodiments, the detection component 12 includes an insulating member 121 and a detection member 122, wherein the insulating member 121 is coated on the surface of the detection member 122 to isolate the detection member 122 from a solid conductive object and to allow liquid metal to contact the detection member 122; the detection member 122 is connected to the communication component 11 to transmit an electrical signal to the output member 13 via the communication component 11 when in contact with the liquid metal.

[0032] The embodiment of the present application can avoid the detection circuit of the entire detection device 10 being turned on due to the contact between the detection member 122 and the object 20 to ensure the accuracy and reliability of the detection result by covering the insulating member 121 outside the detection member 122 without metal leakage.

[0033] In some embodiments, the insulating member 121 may be a fiber cloth.

[0034] In such an embodiment, the fiber cloth may be obtained by sewing the insulating fire-resistant fiber threads.

[0035] During the operation of the detection device 10, when there is no metal leakage, the detection component 122 is isolated due to being surrounded by the insulating component 121, and is not connected with the object to be detected 20, and the detection circuit of the entire detection device 10 is in an open circuit state; when metal leakage occurs, the liquid metal contacts the detection component 122 through the insulating component 121, and the detection component 122 is connected with the object to be detected 20, and the detection circuit of the entire detection device 10 is in a connected state, and the output component 13 outputs a prompt message.

[0036] In some embodiments, the insulating member 121 is configured as a non-dense grid structure so that the liquid metal can penetrate the insulating member 121 and contact the detection member 122 .

[0037] In the embodiment of the present application, the insulating member 121 is set to a non-dense grid structure, so that the leaked liquid metal can penetrate the inner layer of the insulating member 121 and contact the detection member 122. At the same time, it can also prevent solid fine conductive substances such as welding slag and iron filings from entering the inner layer of the insulating member 121 to prevent false alarms.

[0038] In some embodiments, the insulating member 121 and the detecting member 122 are configured to be flat and retractable to increase the contact area with the detected object 20, thereby facilitating improvement of detection sensitivity and reliability.

[0039] In some embodiments, the insulating member 121 can be made of a material with a long-term temperature resistance of up to 1000°C, and is set to have a thickness of not less than 1.5 mm, a total width of not less than 25 mm, an insulation resistance of not less than 0.5 MΩ, an insulation strength of not less than 500 V / mm, and has certain wear resistance and elasticity.

[0040] In some embodiments, the detection member 122 may be a flexible metal belt woven from metal wires.

[0041] In some embodiments, the metal wire used to prepare the detection element 122 can be a stainless steel wire or a copper wire with good conductivity, and its melting point is greater than or equal to 1000° C. The woven metal strip is pretreated to meet the predetermined requirements to obtain the detection element 122. The predetermined requirements include that the surface of the metal strip is clean and smooth, has no burrs, and has certain softness, tensile resistance and stretchability.

[0042] In some embodiments, during application, the detection member 122 may be disposed on the detected object 20 by spiral winding.

[0043] In some embodiments, Figure 2 is a schematic structural diagram of a detection assembly 12 including a plurality of detection members 122 and a plurality of insulating members 121 according to an embodiment of the present application, such as Figure 2 As shown, when there are multiple insulating members 121 and detecting members 122, the number of insulating members 121 corresponds to the number of detecting members 122 one by one, and each detecting member 122 is covered by the insulating member 121 to isolate two adjacent detecting members 122, thereby helping to avoid false alarms caused by mutual influence between the detecting members 122.

[0044] It can be understood that the size of the detection member 122 and the insulating member 121 surrounding it can be set according to the size of the object 20 to be detected or the number of positions to be detected in the object 20 to be detected, and the present application does not impose any limitation on this.

[0045] In some embodiments, there are multiple output components 13, and the multiple output components 13 correspond one-to-one to the multiple detection components 122, so that when any output component 13 outputs prompt information, the detection component 122 corresponding to the output component 13 can be quickly determined, thereby determining the location of the metal leakage in the object under test 20 to ensure the safety of the reactor.

[0046] In some embodiments, the communication component 11 includes a communication component 111 and a connecting component 112; the communication component 111 is used to transmit electrical signals; the positive terminal 1122 of the connecting component 112 is connected to the detection component 122, the negative terminal 1121 of the connecting component 112 is connected to the object to be measured 20, and the connecting end 1123 of the connecting component 112 is connected to the power supply 14 via the output component 13 to transmit electrical signals between the output component 13 and the detection component 122.

[0047] In the embodiment of the present application, the communication component 11 is configured to include a communication component 111 and a connection component 112, which is beneficial to ensuring the transmission quality of the electrical signal and the stability of the transmission process.

[0048] In some embodiments, the communication component 111 is a cable, and the connecting component 112 is a high temperature resistant fast cable connector.

[0049] In some embodiments, the communication component 11 further includes a negative line 113 , and the negative terminal 1121 of the connector 112 is connected to the object 20 to be measured via the negative line 113 .

[0050] In some embodiments, one end of the negative line 113 is connected to the wall of the object 20 to be detected, and the other end is connected to the negative terminal 1121 of the connector 112. The entire object 20 to be detected can be regarded as the negative terminal 1121 of the detection device 10.

[0051] In some embodiments, the communication component 111 has at least one connecting terminal. When the number of detection components 122 is greater than 2, the number of connecting terminals corresponds to the number of detection components 122 one by one, so that when the detection component 122 detects metal leakage, the electrical signal can be transmitted to the corresponding output component 13 in time.

[0052] In some embodiments, the housing may be an insulating shell of a cable, and the conductive portion may be a cable core of the cable. The cable may be a two-core or multi-core cable. When the cable is a multi-core cable, the number of its connection terminals corresponds to the number of detection elements 122 one by one.

[0053] In some embodiments, the detection device 10 further includes: a fixing member 15 , which is configured to fix the detection component 12 and the object 20 to be detected to prevent the detection component 12 from falling off, thereby ensuring the stability of the detection device 10 .

[0054] In some embodiments, the fixing member 15 may be in the form of a high temperature resistant tape or a pressing sheet, and its material may be stainless steel.

[0055] In such an embodiment, when the fixing member 15 is a stainless steel pressing plate, it can be welded to the object to be measured 20 by resistance welding.

[0056] In some embodiments, after the detection device 10 of the embodiment of the present application is installed and the subsequent insulation cotton is installed, the detection function of the detection device 10 can be verified on site to reduce the subsequent operation and maintenance repair costs. In addition, the detection device 10 of the embodiment of the present application can be processed into standard parts (such as 5m, 10m, etc.), and assembly can be completed in the production stage, thereby saving manufacturing and construction costs.

[0057] The embodiment of the present application further provides a method for detecting metal leakage, which is applied to the detection device 10 of the embodiment of the present application. Figure 3 is a schematic flow chart of a method for detecting metal leakage according to an embodiment of the present application, such as Figure 3 As shown, the method includes the following steps S1 to S5.

[0058] S1. Fix the communication component 11 and the object to be measured 20 by using the fixing member 15.

[0059] S2. Turn on the power supply 14.

[0060] S3. Utilize the detection component 12 to detect the presence of liquid metal in the object 20 to be detected.

[0061] S4. When the detection component 12 detects the presence of liquid metal, the output component 13 is used to output prompt information.

[0062] S5. According to the prompt information, it is determined that the object 20 to be tested has metal leakage.

[0063] The method provided in the embodiment of the present application uses a fixing part 15 to fix the communication component 11 and the object to be measured 20, then turns on the power supply 14, and then uses the detection component 12 to detect the presence of liquid metal in the object to be measured 20, which helps to reduce the occurrence of false alarms, has high reliability and is relatively easy to install. When the detection component 12 detects the presence of liquid metal, the output part 13 can be used to output a prompt message to promptly remind the operator of the occurrence of metal leakage, which is beneficial to ensure the safe operation of the reactor.

[0064] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0065] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A device for detecting metal leakage, characterized in that: It includes: Communication components; A detection component, wherein the detection component is configured to be insulated from a solid conductive object in the object to be detected and to be in contact with liquid metal in the object to be detected so as to detect the presence of the liquid metal; an output component, the output component being communicatively connected to the detection component through the communication component, and being used for outputting prompt information when the detection component detects the presence of the liquid metal; A power supply is used to supply power to the detection component and the output component.

2. The device according to claim 1, characterized in that The detection component comprises an insulating member and a detection member. The insulating member is coated on the surface of the detection member, and is used to isolate the detection member from the solid conductive object and make the liquid metal contact with the detection member; The detection member is connected to the communication component and is used for transmitting an electrical signal to the output member via the communication component when in contact with the liquid metal.

3. The device according to claim 2, characterized in that When there are plural insulating members and detecting members, the number of the insulating members corresponds to the number of the detecting members one by one, and each detecting member is covered by the insulating member to isolate two adjacent detecting members.

4. The device according to claim 3, characterized in that There are multiple output components, and the multiple output components correspond one-to-one to the multiple detection components.

5. The device according to claim 3, characterized in that The communication component includes a communication component and a connecting component; The communication element is used to transmit the electrical signal; The positive terminal of the connector is connected to the detection component, the negative terminal of the connector is connected to the object to be detected, and the connection end of the connector is connected to the power supply via the output component to transmit the electrical signal between the output component and the detection component.

6. The device according to claim 5, characterized in that The communication element has at least one connecting terminal, wherein When the number of the detection elements is greater than 2, the number of the connection terminals corresponds to the number of the detection elements one by one.

7. The device according to claim 2, characterized in that The insulating member is configured as a non-dense grid structure so that the liquid metal can penetrate the insulating member and contact the detection member.

8. The device according to claim 7, characterized in that The insulating member and the detecting member are configured to be flat and retractable to increase the contact area with the detected object.

9. The device according to any one of claims 1 to 8, characterized in that: Also includes: Fixings, The fixing member is configured to fix the detection component and the detected object to prevent the detection component from falling off.

10. A method for detecting metal leakage, applied to the device according to any one of claims 1 to 9, characterized in that: It includes the following steps: S1. Fix the communication component and the object to be measured by using a fixing piece; S2, turn on the power; S3, using a detection component to detect the presence of liquid metal in the object to be detected; S4, when the detection component detects the presence of the liquid metal, outputting prompt information using an output component; S5. Determine, based on the prompt information, whether metal leakage occurs in the object under test.

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