Material escape electron detection device

Abstract

The utility model relates to the technical field of detection, in particular to a material escape electron detection device which comprises an air chamber, a pipeline and a micro-current detection sensor. The air chamber comprises a cavity, and the first end of the pipeline is communicated with the cavity; the pipeline is made of a conductive material, and gas in the cavity is guided into the pipeline from the first end of the pipeline and then guided out from the second end of the pipeline; one end of the micro-current detection sensor is electrically connected with the pipeline, and the other end of the micro-current detection sensor is electrically connected with the grounding end. Based on the current value detected by the micro-current detection sensor in the device, the number of electrons escaped by the detected material in unit time can be estimated, so that the electrons escaped by the material are detected.

Description

Technical Field

[0001] The present disclosure relates to the field of detection technology, and particularly to a device for detecting electrons escaping from a material. Background Art

[0002] As a basic particle constituting matter, the change of the state of matter is inseparable from the change of electron motion. For example, when there are working conditions such as arc discharge, partial discharge, and overheating inside the material in a power switch device, electrons will escape. In this case, if the escaped electrons can be effectively detected, it is possible to accurately judge whether the power switch device is operating normally based on the detection results, which helps to maintain and study the device.

[0003] In addition, under the action of external environmental factors such as electricity, heat, light, and sound, materials may undergo quantum tunneling electron penetration, resulting in the escape phenomenon of electrons breaking free from the Fermi sea, that is, electron escape. Electron escape will cause the loss of molecular skeleton electrons and chemical bond changes, and may ultimately lead to changes in the physical and chemical properties of the material. In this case, if the escaped electrons can be effectively detected, it is possible to accurately judge the changes in the structure and performance of the material based on the detection results. For example, it is possible to determine whether the equipment material under complex environmental conditions has deteriorated and estimate the degree of deterioration based on the detection results, so as to judge whether the material can reach the designed service life and meet the needs of the actual working conditions.

[0004] Therefore, how to effectively detect the escaped electrons is an urgent problem to be solved at present. Summary of the Utility Model

[0005] To solve the problems in the related art, an embodiment of the present disclosure provides a device for detecting electrons escaping from a material.

[0006] In a first aspect, an embodiment of the present disclosure provides a device for detecting electrons escaping from a material, the device including a gas chamber, a pipeline, and a microcurrent detection sensor;

[0007] The gas chamber includes a cavity, the inner wall of the cavity is made of an insulating material, the pipeline is located outside the cavity, and the first end of the pipeline is communicated with the cavity. The cavity is at least used to accommodate the material to be detected and sulfur hexafluoride SF 6 gas;

[0008] The pipeline is made of a conductive material. After the gas in the cavity is introduced into the pipeline from the first end of the pipeline, it is exported from the second end of the pipeline;

[0009] One end of the microcurrent detection sensor is electrically connected to the pipeline, and the other end of the microcurrent detection sensor is electrically connected to the ground terminal. The microcurrent detection sensor is used to detect the current value of the microcurrent between the pipeline and the ground terminal when the gas is exported from the pipeline.

[0010] In one implementation of the present disclosure, the device further includes a flowmeter connected to the pipeline for detecting the volume of gas passing through the pipeline per unit time.

[0011] In one implementation of the present disclosure, the flowmeter is connected to the second end of the pipeline for detecting the volume of gas exported from the second end of the pipeline per unit time;

[0012] Or, the flowmeter is connected to the first end of the pipeline for detecting the volume of gas imported from the first end of the pipeline per unit time.

[0013] In one implementation of the present disclosure, the device further includes an environmental excitation source disposed in the cavity, and the environmental excitation source is used to emit electromagnetic waves or sound waves to change the environmental parameters of the environment in the cavity;

[0014] And / or, the cavity is further used to accommodate at least one excitation gas other than SF 6 gas;

[0015] And / or, the device further includes an excitation liquid sprayer disposed in the cavity, and the excitation liquid sprayer is used to spray at least one excitation liquid onto the material to be detected.

[0016] In one implementation of the present disclosure, the device further includes at least one power supply interface disposed in the cavity, and the power supply interface is used to electrically connect the material to be detected to a power supply.

[0017] In one implementation of the present disclosure, the pipeline is a spiral pipe made of a conductive material;

[0018] And / or, a mesh structure made of a conductive material is built in the pipeline, and the mesh structure is electrically connected to the pipeline;

[0019] And / or, a graphene film is disposed on the inner wall of the pipeline, and the graphene film is electrically connected to the pipeline.

[0020] In one implementation of the present disclosure, the device further includes a gas valve, and the first end of the pipeline is in communication with the cavity through the gas valve.

[0021] In a second aspect, an embodiment of the present disclosure provides a control method for a material electron emission detection device, characterized in that the method is applied to the material electron emission detection device in any one of the first aspects, and the method includes:

[0022] According to the current value detected by the micro-current detection sensor, obtain the number of electrons transferred from the pipeline to the ground end per unit time.

[0023] In one implementation of the present disclosure, the method further includes:

[0024] Obtain the volume of gas passing through the pipeline within a unit time detected by the flowmeter;

[0025] Obtain SF passing through the pipeline within a unit time according to the volume 6 molecules and sulfur hexafluoride electron adduct (SF 6 - ) * the number of molecules of the molecule;

[0026] Obtain the power output efficiency of the pipeline according to the number of electrons and the number of molecules;

[0027] Obtain the charge carried by the gas per unit volume passing through the pipeline according to the power output efficiency, the preset system efficiency error, and the number of molecules;

[0028] Estimate the number of electrons escaping from the material to be detected per unit time according to the charge carried.

[0029] In a third aspect, an embodiment of the present disclosure provides an electronic device, including a memory and a processor. Among them, the memory is used to store one or more computer instructions, and the one or more computer instructions are executed by the processor to implement the method described in the first aspect.

[0030] In a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium, on which computer instructions are stored, and when the computer instructions are executed by a processor, the method described in the first aspect is implemented.

[0031] According to the technical solution provided by the embodiment of the present disclosure, the material electron emission detection device includes a gas chamber, a pipeline, and a micro-current detection sensor; the gas chamber includes a cavity, the inner wall of the cavity is made of an insulating material, the pipeline is located outside the cavity, and the first end of the pipeline is communicated with the cavity. The cavity is at least used to accommodate the material to be detected and sulfur hexafluoride SF 6 gas; the pipeline is made of a conductive material. After the gas in the cavity is introduced into the pipeline from the first end of the pipeline, it is exported from the second end of the pipeline; the first end of the micro-current detection sensor is electrically connected to the pipeline, and the second end of the micro-current detection sensor is electrically connected to the ground terminal. The micro-current detection sensor is used to detect the current value of the micro-current between the pipeline and the ground terminal when the gas is exported from the pipeline; the flowmeter is connected to the pipeline and is used to detect the volume of gas passing through the pipeline within a unit time. In this solution, since the electrons emitted by the material to be detected can combine with SF 6 gas to form sulfur hexafluoride electron adduct (SF 6 - ) * , and the gas containing (SF 6 - ) * when passing through the pipeline made of a conductive material, the (SF in contact with the pipeline6 - ) * The electrons in [it] will escape into the pipeline, thereby forming a microcurrent between the pipeline and the grounding terminal. Therefore, by detecting the current value of the microcurrent between the pipeline and the grounding terminal with a microcurrent detection sensor, the amount of electrons escaping from the material to be detected per unit time can be estimated based on this current value, thereby realizing the detection of the electrons escaping from the material.

[0032] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In conjunction with the accompanying drawings, through the following detailed description of non-limiting embodiments, other features, objects, and advantages of the present disclosure will become more apparent. In the drawings:

[0034] Figure 1 Shows a schematic structural diagram of a material electron emission detection device according to an embodiment of the present disclosure.

[0035] Figure 2 Shows a schematic structural diagram of a material electron emission detection device according to an embodiment of the present disclosure.

[0036] Figure 3 Shows a flowchart of a control method for a material electron emission detection device according to an embodiment of the present disclosure.

[0037] Figure 4 Shows a block diagram of a control device for a material electron emission detection device according to an embodiment of the present disclosure.

[0038] Figure 5 Shows a block diagram of an electronic device according to an embodiment of the present disclosure.

[0039] Figure 6 Shows a schematic structural diagram of a computer system suitable for implementing the method according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. In addition, for clarity, parts irrelevant to the description of the exemplary embodiments are omitted in the drawings.

[0041] In the present disclosure, it should be understood that terms such as "including" or "having" are intended to indicate the presence of the features, numbers, steps, actions, components, parts, or combinations thereof disclosed in this specification, and are not intended to exclude the possibility of the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0042] In addition, it should be noted that, without conflict, the embodiments in the present disclosure and the features in the embodiments may be combined with each other. The following will describe the present disclosure in detail with reference to the drawings and in combination with the embodiments.

[0043] In the present disclosure, if it involves operations of obtaining user information or user data or presenting user information or user data to others, such operations are all operations authorized, confirmed by the user, or actively selected by the user.

[0044] In the related art, phenomena such as discharge and overheating often occur in switchgear, and these phenomena are likely to cause changes in the internal operating state of the switchgear. In order to detect the internal operating state of the switchgear, decomposition product detection, partial discharge detection, etc. can be carried out. Among them, decomposition product detection is to detect the sulfur hexafluoride SF in the equipment under discharge and overheating conditions 6 of the decomposition products, and judge the operating state of the switchgear according to the detection results. However, this solution is limited by the existing detection means, and the detection accuracy is relatively low; while partial discharge detection is to detect the partial discharge existing in high-voltage equipment by using methods such as ultra-high frequency and ultrasonic waves. This solution is easily affected by the environment, and the background and effective signals are often difficult to distinguish, which will also lead to relatively low detection accuracy.

[0045] In addition, in order to detect the material structure and performance of materials, currently, materials can be detected based on metallographic analysis, chemical analysis, mechanical property testing, thermal analysis, electron microscope analysis, acoustic emission analysis, infrared thermography, magnetic particle flaw detection, X-ray detection, ultrasonic detection, etc. The above detection methods either analyze the changes and existing defects of materials by observing the microscopic structure of materials (such as metallographic analysis and electron microscope), or detect the defects and cracks inside materials by means of physical detection means to judge whether there are problems with the materials (such as acoustic emission detection, infrared thermography, magnetic particle flaw detection, X-ray detection, ultrasonic detection), or analyze the changes in material characteristics by detecting the composition of materials through spectroscopy and mass spectrometry (such as chemical analysis), or analyze the changes in material characteristics by detecting the mechanical properties such as strength, hardness, and toughness of materials (such as mechanical property testing), or reveal information such as the thermal performance and thermal stability of materials by observing the thermal response of materials at different temperatures, so as to judge the stability of materials (such as thermal analysis). However, in the above solutions, most of them detect and evaluate material characteristics through indirect detection methods. Even when it comes to the microscopic field, it usually only conducts microscopic structure and morphology analysis, or detects the composition of materials, and does not involve the method of directly judging material characteristics by detecting escaping electrons, and does not realize the analysis and evaluation of relevant conditions from the essential level of material characteristic changes. Therefore, relatively accurate detection cannot be achieved.

[0046] In view of the above problems, the inventors found that when arc discharge, partial discharge, overheating inside the material, etc. occur in power switchgear, electron emission will occur. In this case, if effective detection of the emitted electrons can be achieved, the normal operation of the equipment can be accurately judged based on the detection results, which helps to maintain and study the equipment.

[0047] In addition, under the action of external environmental factors such as electricity, heat, light, and sound, various materials may undergo quantum tunneling electron tunneling, resulting in the escape phenomenon of electrons breaking free from the Fermi sea, that is, electron emission. Electron emission will cause the loss of molecular framework electrons and chemical bond changes, and may ultimately lead to changes in the physical and chemical properties of the material. In this case, if effective detection of the emitted electrons can be achieved, the changes in the material structure and performance can be more accurately determined based on the detection results. For example, it can be determined whether the equipment material under complex environmental conditions has deteriorated and the degree of deterioration can be estimated based on the detection results, so as to judge whether the material can reach the design life and meet the actual working conditions.

[0048] In summary, how to effectively detect the emitted electrons is an urgent problem to be solved at present.

[0049] To solve the above problems, the embodiments of the present disclosure provide a material electron emission detection device, method, device, equipment and medium.

[0050] According to the technical solution provided by the embodiments of the present disclosure, the material electron emission detection device includes a gas chamber, a pipeline, a microcurrent detection sensor and a flowmeter; the gas chamber includes a cavity, the inner wall of the cavity is made of insulating material, the pipeline is located outside the cavity, and the first end of the pipeline is communicated with the cavity. The cavity is at least used to accommodate the material to be detected and sulfur hexafluoride SF 6 gas; the pipeline is made of conductive material. After the gas in the cavity is introduced into the pipeline from the first end of the pipeline, it is exported from the second end of the pipeline; the first end of the microcurrent detection sensor is electrically connected to the pipeline, and the second end of the microcurrent detection sensor is electrically connected to the ground terminal. The microcurrent detection sensor is used to detect the current value of the microcurrent between the pipeline and the ground terminal when the gas is exported from the pipeline; the flowmeter is connected to the pipeline and is used to detect the volume of the gas passing through the pipeline per unit time. In this solution, since the electrons emitted by the material to be detected can combine with SF 6 gas to form a sulfur hexafluoride electron complex (SF 6 - ) * , and the gas containing (SF 6 - ) * When passing through the pipeline made of conductive material, the (SF 6 - )* The electrons in it will escape into the pipeline, thus forming a microcurrent between the pipeline and the grounding terminal. Therefore, by detecting the current value of the microcurrent between the pipeline and the grounding terminal with a microcurrent detection sensor, the amount of electrons escaping from the material to be detected per unit time can be estimated based on this current value, thereby realizing the detection of the electrons escaping from the material.

[0051] Figure 1 Fig. shows a schematic structural diagram of a material electron emission detection device according to an embodiment of the present disclosure. As Figure 1 shown, the material electron emission detection device includes a gas chamber 101, a pipeline 102, and a microcurrent detection sensor 103;

[0052] The gas chamber 101 includes a cavity 105, the inner wall of the cavity 105 is made of an insulating material, the pipeline 102 is located outside the cavity 105, and the first end 112 of the pipeline 102 is in communication with the cavity 105. The cavity 105 is at least used to accommodate the material 200 to be detected and sulfur hexafluoride SF 6 gas;

[0053] The pipeline 102 is made of a conductive material. After the gas in the cavity 105 is introduced into the pipeline 102 from the first end 112 of the pipeline 102, it is exported from the second end 122 of the pipeline 102;

[0054] One end of the microcurrent detection sensor 103 is electrically connected to the pipeline 102, and the other end of the microcurrent detection sensor is electrically connected to the grounding terminal 106. The microcurrent detection sensor 103 is used to detect the current value of the microcurrent between the pipeline 102 and the grounding terminal 106 when the gas is exported from the pipeline 102;

[0055] The flowmeter 104 is connected to the pipeline 102 and is used to detect the volume of the gas passing through the pipeline 102 per unit time.

[0056] In one implementation manner of the present disclosure, the material to be detected can be a solid material or a liquid material, and the present disclosure does not specifically limit the material to be detected.

[0057] In one implementation manner of the present disclosure, the conductive material may include metals, carbon fibers, graphite, etc.

[0058] In one implementation manner of the present disclosure, the insulating material may include glass fiber, alumina, polyethylene, polystyrene, silicone rubber, epoxy resin, polytetrafluoroethylene, etc.

[0059] In the research, the inventor found that electrons are microscopic particles with extremely small mass, and their motion has significant quantum characteristics, making it difficult to accurately measure. Compared with the adsorption of electrons by molecules in liquid and gas materials, in the detected material, the Fermi sea confines the free movement of electrons, and the electrons are in the condensed phase with the lowest entropy value. When conditions such as discharge and overheating occur inside the device, electrons will be emitted from the detected material inside the device to form free electrons. In addition, when the detected material is under the action of environmental conditions such as electricity, heat, light, and sound, electron tunneling through the quantum tunnel and escaping from the confinement of the Fermi sea may also occur. At this time, the free electrons are in a high-entropy state. Usually, free electrons will dissipate in space and cannot be accumulated in time and space. However, if they are in a high-electrophilic dielectric environment at this time, the electrons will be captured by the high-electrophilic dielectric, thus delaying this dissipation process.

[0060] A high-electrophilic dielectric refers to an electrical insulating dielectric with a large electron affinity. This kind of dielectric can effectively capture free electrons and form a combination with electrons. High-electrophilic dielectrics include but are not limited to SF 6 gas, SF 6 The high-electrophilic property of the SF molecule stems from its special molecular structure, in which one sulfur atom is evenly surrounded by six fluorine atoms, forming a highly symmetric octahedral structure. This structure not only endows SF 6 with extremely high chemical stability, but also gives it a very high electron affinity. Its vertical electron affinity reaches 0.571 eV, which can effectively attract and capture free electrons.

[0061] It should be noted that for the sake of easy understanding, in the embodiments of the present disclosure, a cavity is used at least to accommodate the detected material and SF 6 gas as an example for illustration. This cavity can also be used to accommodate other high-electrophilic dielectric gases other than the detected material and SF 6 gas.

[0062] In the embodiments of the present disclosure, since the cavity is used at least to accommodate the detected material and SF 6 gas, and the inner wall of the cavity is made of an insulating material, when electrons escape from the detected material accommodated in the cavity, the electrons can only combine with the SF 6 molecules in the gas in the cavity to form a sulfur hexafluoride electron combination (SF 6 - ) * molecules. In this process, there is an interconversion between electron entropy and energy, the sulfur-fluorine S-F bond becomes longer, heat is released, the electrons change from the free state to the bound state, and the electron entropy value decreases. Thanks to the strong electron affinity and large mass (molecular weight 146.055) of the SF 6 molecules, the escape rate of the electrons is reduced by about 10^15 to 10^20 times after being captured, so that the electrons in the gas in the cavity can pass through (SF 6- ) * exists in a relatively stable form, so that the gas in the cavity includes SF 6 molecules and (SF 6 - ) * at least one of the molecules.

[0063] When the gas in the cavity is introduced into the pipeline from the first end of the pipeline and exported from the second end of the pipeline, since the pipeline is made of a metal material, when it comes into contact with the metal material, the electrons in the gas phase (SF 6 - ) * will escape to the solid metal phase, its entropy value decreases, and the bound state deepens, thus forming a microcurrent between the pipeline and the grounding end.

[0064] Among them, based on the experimental results of the inventor, it can be determined that the content of (SF 6 - ) * in the gas passing through the pipeline and the microcurrent of the electron entropy change can have the following quantitative relationship:

[0065] (1) When the gas flow velocity of the gas passing through the pipeline is stable, the microcurrent value is basically stable;

[0066] (2) The microcurrent value has a linear positive correlation with the gas flow velocity of the gas passing through the pipeline.

[0067] Therefore, by detecting the current value of the microcurrent between the pipeline and the grounding end with a microcurrent detection sensor, the amount of electrons escaping from the material to be detected can be estimated based on this current value. On this basis, further combined with the gas flow rate detected by the flowmeter of the gas passing through the pipeline, the charge carried by the gas per unit volume passing through the pipeline can be obtained.

[0068] According to the technical solution provided by the embodiments of the present disclosure, the material electron emission detection device includes an air chamber, a pipeline, a microcurrent detection sensor, and a flowmeter; the air chamber includes a cavity, the inner wall of the cavity is made of an insulating material, the pipeline is located outside the cavity, and the first end of the pipeline is communicated with the cavity. The cavity is at least used to accommodate the material to be detected and sulfur hexafluoride SF 6 gas; the pipeline is made of a conductive material, and the gas in the cavity is introduced into the pipeline from the first end of the pipeline and then exported from the second end of the pipeline; the first end of the microcurrent detection sensor is electrically connected to the pipeline, the second end of the microcurrent detection sensor is electrically connected to the grounding end, and the microcurrent detection sensor is used to detect the current value of the microcurrent between the pipeline and the grounding end when the gas is exported from the pipeline; the flowmeter is connected to the pipeline and is used to detect the volume of the gas passing through the pipeline per unit time. In this solution, since the electrons escaping from the material to be detected can combine with SF 6 gas to form a sulfur hexafluoride electron conjugate (SF6 - ) * , and contains (SF 6 - ) * When the gas passes through a pipe made of conductive material, the gas (SF 6 - ) * The electrons in the material will escape into the pipe, thus forming a microcurrent between the pipe and the ground. Therefore, by detecting the current value of the microcurrent between the pipe and the ground through the microcurrent detection sensor, the amount of electrons escaped from the material being tested can be estimated based on the current value, thereby realizing the detection of electrons escaped from the material.

[0069] In one implementation of the present disclosure, Figure 1 As shown, the electronic material escape detection device further includes a flow meter 104, which is connected to the pipeline 102 and is used to detect the volume of gas passing through the pipeline 102 per unit time.

[0070] According to the technical solution provided in the embodiment of the present disclosure, on the basis of estimating the amount of electrons escaped from the detected material based on the current value, further combined with the volume of gas passing through the pipeline per unit time detected by the flow meter, the charge per unit volume of gas passing through the pipeline can be obtained, and based on the charge, the number of electrons escaped from the detected material per unit time can be more accurately estimated, thereby achieving more accurate detection of electrons escaped from the material.

[0071] In one implementation of the present disclosure, Figure 1 As shown, the flow meter 104 is connected to the second end 122 of the pipeline 102, and is used to detect the volume of the gas derived from the second end 122 of the pipeline 102 per unit time;

[0072] or, Figure 2 FIG. 2 shows a schematic structural diagram of a material escape electron detection device according to an embodiment of the present disclosure. Figure 2 As shown, the flow meter 104 is connected to the first end 112 of the pipeline 102, and is used to detect the volume of the gas introduced from the first end 112 of the pipeline 102 per unit time.

[0073] In the technical solution provided in the embodiment of the present disclosure, by connecting the flow meter to the second end of the pipeline so that it is used to detect the volume of gas exported from the second end of the pipeline per unit time, or by connecting the flow meter to the first end of the pipeline so that it is used to detect the volume of gas introduced from the first end of the pipeline per unit time, the difficulty of loading and unloading the flow meter can be reduced, the inspection and maintenance of the flow meter can be facilitated, and the user experience can be improved while ensuring that the flow meter can more accurately detect the volume of gas passing through the pipeline per unit time.

[0074] In one implementation of the present disclosure, as Figure 1 shown, the material electron emission detection device further includes an environmental excitation source 1071 disposed in the cavity 105. The environmental excitation source 1071 is configured to emit electromagnetic waves or sound waves to change the environmental parameters of the environment in the cavity 105, where the environmental parameters include at least one of electric field strength, magnetic field strength, light intensity, temperature, and sound intensity.

[0075] And / or, the cavity 105 is further configured to accommodate at least one excitation gas other than SF 6 gas;

[0076] And / or, the device 105 further includes an excitation liquid sprayer 1072 disposed in the cavity 105. The excitation liquid sprayer 1072 is configured to spray at least one excitation liquid onto the material to be detected 200.

[0077] In one embodiment of the present disclosure, by way of example, the environmental excitation source may be a light source, which can illuminate the interior of the cavity to change the light intensity inside the cavity. Alternatively, the environmental excitation source may also be a heating device or a cooling device. The heating device can heat the environment inside the cavity to increase the temperature inside the cavity, and the cooling device can cool the environment inside the cavity to lower the temperature inside the cavity. Alternatively, the environmental excitation source may also be a speaker, which can play a pre-set sound to change the sound intensity inside the cavity.

[0078] In one embodiment of the present disclosure, the excitation gas can be understood as a gas that can corrode or age the material to be detected. By way of example, the excitation gas may include sulfur dioxide gas, sulfur trioxide gas, nitrogen dioxide gas, hydrogen sulfide gas, hydrogen chloride gas, etc.

[0079] In one embodiment of the present disclosure, the excitation liquid can be understood as a liquid that can corrode or age the material to be detected. By way of example, the excitation liquid may include sulfuric acid solution, nitric acid solution, hydrofluoric acid solution, etc.

[0080] In the technical solution provided by the embodiments of the present disclosure, by setting an environmental excitation source in the cavity, and / or making the cavity further accommodate at least one excitation gas other than SF 6 gas, and / or setting an excitation liquid sprayer in the cavity, the environment inside the cavity can simulate the environment where the material to be detected is located in a real situation, so as to facilitate determining whether the material to be detected has deteriorated in the simulated real environment according to the material electron emission detection result, and to facilitate predicting the degree of deterioration of the material to be detected according to the material electron emission detection result.

[0081] In one implementation of the present disclosure, as Figure 2As shown in the figure, the material electron emission detection device further includes at least one power interface 108 disposed in the cavity 105, and the power interface 108 is used to electrically connect the material to be detected 200 to a power source.

[0082] In the technical solution provided by the embodiments of the present disclosure, by providing at least one power interface in the cavity, the material to be detected can be electrically connected to the power source through this power interface, so as to simulate the real working scenario of the material to be detected in the power supply and distribution equipment, so as to determine whether the material to be detected meets the design requirements of the power supply and distribution equipment according to the material electron emission detection result.

[0083] In one implementation manner of the present disclosure, as Figure 2 shown, the material electron emission detection device further includes a gas circulator 130. The first end of the gas circulator 130 is in communication with the second end 122 of the pipeline 102, and the second end of the gas circulator 130 is in communication with the cavity 105. The gas circulator 130 is used to introduce the gas exported from the second end 122 of the pipeline 102 into the cavity 105.

[0084] In the technical solution provided by the embodiments of the present disclosure, by providing a gas circulator, it can be ensured that the gas exported from the second end of the pipeline can be introduced into the cavity and come into contact with the material to be detected again, so that the electrons emitted by the material to be detected can combine with SF in this part of the gas 6 gas to form a sulfur hexafluoride electron complex (SF 6 - ) * , so as to realize continuous detection of the electrons emitted by the material to be detected on the premise of minimizing the waste of SF 6 gas.

[0085] In one implementation manner of the present disclosure, the pipeline is a spiral tube made of a conductive material;

[0086] and / or, a mesh structure made of a conductive material is disposed inside the pipeline, and the mesh structure is electrically connected to the pipeline;

[0087] and / or, a graphene film is disposed on the inner wall of the pipeline, and the graphene film is electrically connected to the pipeline.

[0088] In the technical solution provided by the embodiments of the present disclosure, by making the pipeline a spiral tube made of a conductive material, the pipeline length can be increased as much as possible on the premise that the space occupied by the pipeline is small, so that the gas passing through the pipeline can fully contact the inner wall of the pipeline, ensuring that (SF in the gas 6 - ) *The electrons can fully escape into the pipeline, which helps to improve the accuracy of detecting the electrons emitted by the material; by arranging a mesh structure and / or a graphene film made of a conductive material electrically connected to the pipeline inside the pipeline, the gas passing through the pipeline can be made to fully contact with the mesh structure and / or the graphene film, ensuring that in the gas (SF 6 - ) * The electrons can fully escape into the pipeline through the mesh structure and / or the graphene film, which helps to improve the accuracy of detecting the electrons emitted by the material.

[0089] In one implementation of the present disclosure, as Figure 1 shown, the material electron emission detection device further includes a gas valve 109, and the first end 112 of the pipeline 102 is communicated with the cavity 105 through the gas valve 109.

[0090] Specifically, the gas valve can respond to an opening command to communicate the first end of the pipeline with the cavity; or, the gas valve is used to respond to a closing command to disconnect the first end of the pipeline from the cavity.

[0091] In the technical solution provided by the embodiment of the present disclosure, by making the first end of the pipeline communicate with the cavity through the gas valve, the conduction state between the pipeline and the cavity can be controlled more conveniently. For example, the cavity can be made to contain the material to be detected and be filled with SF 6 gas, then control the gas valve to disconnect the first end of the pipeline from the cavity, and after a preset time length, control the gas valve to communicate the first end of the pipeline with the cavity, so as to facilitate the control of the contact duration between the SF 6 gas and the material to be detected, etc.

[0092] In the embodiment of the present disclosure, a control method for a material electron emission detection device is provided. This method is applied to any of the above-mentioned material electron emission detection devices. Figure 3 shows a flowchart of the control method for the material electron emission detection device according to the embodiment of the present disclosure. As Figure 3 shown, the control method for the material electron emission detection device includes the following step S101:

[0093] In step S101, according to the current value detected by the micro-current detection sensor, obtain the number of electrons transferred from the pipeline to the ground end within a unit time.

[0094] According to the technical solution provided by the embodiment of the present disclosure, by obtaining the number of electrons transferred from the pipeline to the ground end within a unit time according to the current value detected by the micro-current detection sensor, the amount of electrons emitted by the material to be detected within a unit time can be estimated based on this number, so as to realize the detection of the electrons emitted by the material.

[0095] In one implementation of the present disclosure, the method further includes the following steps:

[0096] Obtain the volume of the gas passing through the pipeline per unit time detected by the flowmeter;

[0097] Obtain the number of SF6 molecules and the number of (SF6-)* molecules passing through the pipeline per unit time according to the volume; 6 molecules and sulfur hexafluoride electron complexes (SF6-)* 6 - ) * molecules.

[0098] Obtain the power output efficiency of the pipeline according to the number of electrons and the number of molecules;

[0099] Obtain the charge carried by the gas per unit volume passing through the pipeline according to the power output efficiency, the preset system efficiency error, and the number of molecules;

[0100] Estimate the number of electrons emitted by the material to be detected per unit time according to the charge carried.

[0101] In an implementation manner of the present disclosure, obtaining the volume of the gas passing through the pipeline per unit time detected by the flowmeter can be understood as directly reading the volume V of the gas passing through the pipeline per unit time detected by the flowmeter, or can be understood as reading the flow velocity v of the gas detected by the flowmeter, and according to V = v·π·r 2 Obtain the volume V of the gas passing through the pipeline per unit time, where r is the radius of the pipeline and π is the pi.

[0102] In an implementation manner of the present disclosure, obtaining the number of SF6 molecules and the number of (SF6-)* molecules passing through the pipeline per unit time according to the volume can be understood as obtaining the number of SF6 molecules and the number of (SF6-)* molecules Z passing through the pipeline according to Z = ρV / M. Where ρ is the density of the gas passing through the pipeline, and this density can be calculated according to the molar mass of the gas passing through the pipeline and the current temperature and atmospheric pressure, and M is the molar mass of the gas passing through the pipeline (it can be considered that this molar mass is the molar mass of SF6) 6 .

[0103] In an implementation manner of the present disclosure, obtaining the number of electrons transferred from the pipeline to the ground terminal per unit time according to the current value detected by the micro-current detection sensor can be understood as:

[0104] Obtain the electric charge transferred from the pipeline to the ground terminal per unit time according to the current value detected by the micro-current detection sensor and the time length of the unit time, and calculate the number of electrons transferred from the pipeline to the ground terminal per unit time according to this electric charge and the electron charge of a single electron.

[0105] In one implementation of the present disclosure, obtaining the power output efficiency of the pipeline according to the number of electrons and the number of molecules can be understood as calculating the power output efficiency η of the pipeline according to η = C / Z, where C is the number of electrons transferred from the pipeline to the ground terminal per unit time.

[0106] In one implementation of the present disclosure, obtaining the charge of the gas per unit volume passing through the pipeline according to the power output efficiency, the preset system efficiency error, and the number of molecules can be understood as obtaining the charge C of the gas per unit volume passing through the pipeline according to C k = ηη 0 ·Z, where η k is the preset system efficiency error. Among them, due to the attachment of (SF 0 6 - )gas molecules and other reasons on the surface of the copper pipe, it may cause the situation that the (SF * 6 - )molecules in the gas passing through the pipeline do not release electrons, which may cause errors in the detection results. η * can be understood as obtaining the system efficiency error through experimental verification, which is used to correct the above errors, thereby improving the accuracy of the calculated C 0 . k

[0107] According to the technical solution provided by the embodiment of the present disclosure, by obtaining the volume of the gas passing through the pipeline per unit time detected by the flow meter; obtaining the number of SF6 molecules and (SF6-)* molecules of sulfur hexafluoride electron conjugates passing through the pipeline per unit time according to the volume; obtaining the number of electrons transferred from the pipeline to the ground terminal per unit time according to the current value detected by the microcurrent detection sensor; obtaining the power output efficiency of the pipeline according to the number of electrons and the number of molecules; obtaining the charge of the gas per unit volume passing through the pipeline according to the power output efficiency, the preset system efficiency error, and the number of molecules; estimating the number of electrons escaping from the detected solid material per unit time according to the charge, so as to realize the detection of the electrons escaping from the material. Based on this detection result, it is possible to accurately judge the types and degrees of discharge and overheating of the detected material, which is helpful for maintaining and researching the equipment where the detected material is located. Or, based on this detection result, it is also possible to determine whether the detected material has deteriorated and / or estimate the degree of deterioration to judge whether the detected material can reach the designed life and meet the needs of the actual working conditions.

[0108] Figure 4 Fig. shows a structural block diagram of a control device of a material electron emission detection device according to an embodiment of the present disclosure.

[0109] Among them, the device can be implemented as part or all of an electronic device through software, hardware, or a combination of both.

[0110] As Figure 4 shown, the control device of the material electron emission detection device includes:

[0111] An electron number acquisition module 301, configured to acquire the number of electrons transferred from the pipeline to the ground terminal within a unit time according to the current value detected by the micro-current detection sensor.

[0112] The present disclosure also discloses an electronic device, Figure 5 showing a structural block diagram of an electronic device according to an embodiment of the present disclosure.

[0113] As Figure 5 shown, the electronic device includes a memory and a processor. Among them, the memory is used to store one or more computer instructions, and the one or more computer instructions are executed by the processor to implement the method according to the embodiment of the present disclosure.

[0114] The present disclosure provides a control method for a material electron emission detection device. The method is applied to the material electron emission detection device, and the method includes:

[0115] Acquire the number of electrons transferred from the pipeline to the ground terminal within a unit time according to the current value detected by the micro-current detection sensor.

[0116] In an implementation manner of the present disclosure, the method further includes:

[0117] Acquire the volume of the gas passing through the pipeline within a unit time detected by the flow meter;

[0118] Obtain the number of SF 6 molecules and sulfur hexafluoride electron complexes (SF 6 - ) * molecules according to the volume;

[0119] Obtain the power output efficiency of the pipeline according to the number of electrons and the number of molecules;

[0120] Obtain the charge carried by the gas per unit volume passing through the pipeline according to the power output efficiency, the preset system efficiency error, and the number of molecules;

[0121] Estimate the number of electrons emitted by the material to be detected per unit time according to the charge carried.

[0122] Figure 6 showing a structural schematic diagram of a computer system suitable for implementing the method according to an embodiment of the present disclosure.

[0123] As shown Figure 6 in the figure, the computer system includes a processing unit, which can execute various methods in the above embodiments according to a program stored in a read-only memory (ROM) or a program loaded from a storage section into a random access memory (RAM). In the RAM, various programs and data required for the operation of the computer system are also stored. The processing unit, the ROM, and the RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0124] The following components are connected to the I / O interface: an input section including a keyboard, a mouse, etc.; an output section including a cathode ray tube (CRT), a liquid crystal display (LCD), etc. and a speaker, etc.; a storage section including a hard disk, etc.; and a communication section including a network interface card such as a LAN card, a modem, etc. The communication section performs a communication process via a network such as the Internet. A drive is also connected to the I / O interface as needed. A removable medium, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive as needed so that a computer program read from it can be installed into the storage section as needed. Among them, the processing unit can be implemented as a processing unit such as a CPU, a GPU, a TPU, an FPGA, an NPU, etc.

[0125] Specifically, according to an embodiment of the present disclosure, the above-described method can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program tangibly embodied on a machine-readable medium, and the computer program includes program code for performing the above method. In such an embodiment, the computer program can be downloaded and installed from a network through the communication section, and / or installed from a removable medium.

[0126] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code, and the module, the program segment, or the part of code includes one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0127] The units or modules involved in the embodiments of the present disclosure can be implemented in software or in programmable hardware. The described units or modules can also be provided in a processor, and the names of these units or modules do not, in some cases, constitute a limitation on the units or modules themselves.

[0128] As another aspect, the present disclosure also provides a computer-readable storage medium, which can be the computer-readable storage medium included in the electronic device or computer system in the above embodiments; or can exist alone, a computer-readable storage medium not assembled into the device. The computer-readable storage medium stores one or more programs, and the one or more programs are used by one or more processors to execute the methods described in the present disclosure.

[0129] The above description is only for the preferred embodiments of the present disclosure and the illustration of the technical principles applied. Those skilled in the art should understand that the scope of the invention involved in the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present disclosure.

Claims

1. A material escape electron detection device, characterized in that: The device comprises an air chamber, a pipeline, and a micro-current detection sensor; The gas chamber comprises a cavity, the inner wall of which is made of insulating material, the pipe is located outside the cavity, and the first end of the pipe is connected to the cavity, and the cavity is used to contain at least the material to be tested and sulfur hexafluoride SF6 gas; The pipeline is made of a conductive material, and the gas in the cavity is introduced into the pipeline from a first end of the pipeline and then discharged from a second end of the pipeline; One end of the microcurrent detection sensor is electrically connected to the pipeline, and the other end of the microcurrent detection sensor is electrically connected to the ground end. The microcurrent detection sensor is used to detect the current value of the microcurrent between the pipeline and the ground end when the gas is discharged from the pipeline.

2. The material escape electronic detection device according to claim 1, characterized in that: The device also includes a flow meter, which is connected to the pipeline and is used to detect the volume of gas passing through the pipeline per unit time.

3. The material escape electronic detection device according to claim 2, characterized in that: The flow meter is connected to the second end of the pipeline and is used to detect the volume of gas extracted from the second end of the pipeline per unit time; Alternatively, the flow meter is connected to the first end of the pipeline and is used to detect the volume of gas introduced from the first end of the pipeline per unit time.

4. The material escape electronic detection device according to claim 1, characterized in that: The device also includes an environmental excitation source disposed in the cavity, the environmental excitation source is used to emit electromagnetic waves or sound waves to change the environmental parameters of the environment in the cavity, wherein the environmental parameters include at least one of electric field intensity, magnetic field intensity, light intensity, temperature, and sound intensity; And / or, the cavity is also used to contain at least one excitation gas other than the SF6 gas; And / or, the device further comprises an excitation liquid sprayer disposed in the cavity, and the excitation liquid sprayer is used for spraying at least one excitation liquid onto the material to be detected.

5. The material escape electronic detection device according to claim 1, characterized in that: The device further comprises at least one power supply interface disposed in the cavity, and the power supply interface is used to electrically connect the detected material to a power supply.

6. The material escape electronic detection device according to claim 1, characterized in that: The pipeline is a spiral tube made of conductive material; And / or, a mesh structure made of a conductive material is built into the pipeline, and the mesh structure is electrically connected to the pipeline; And / or, a graphene film is provided on the inner wall of the pipe, and the graphene film is electrically connected to the pipe.

7. The material escape electronic detection device according to claim 1, characterized in that: The device further comprises an air valve, and the first end of the pipeline is communicated with the cavity through the air valve.

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