A passive nuclear material level measuring device and a measuring method thereof

Abstract

The present application relates to a passive nuclear material level measurement device and a measurement method thereof, and relates to the field of material level monitoring technology, including a material bin and a reference bin, the reference bin and the material bin are set in the same proportion, there is empty material in the reference bin, a mounting seat is fixedly installed on the outer wall of the material bin, a servo turntable is fixedly installed on the mounting seat, and a first passive nuclear material level meter is fixedly installed on the servo turntable; and: a second passive nuclear material level meter is fixedly installed on the outer wall of the reference bin; a data processor is connected to the data output end of the first passive nuclear material level meter, and is used to determine the material type and radiation coefficient of the material in the material bin; a signal processor is connected to the data processor, the first passive nuclear material level meter and the signal output end of the second passive nuclear material level meter, and is used to calculate and output the current material level of the material according to the radiation coefficient and current radiation intensity of the material. The present application can improve the accuracy of detecting the material level of different types of materials.

Description

Technical Field

[0001] The present application relates to the field of material level monitoring technology, and in particular to a passive nuclear material level measuring device and a measuring method thereof. Background Art

[0002] Passive nuclear level meter is a level meter device that measures the material by measuring the radioactive energy released by the material itself. It is different from nuclear level meter, which does not need to be used with a radioactive source, and measures the radioactive energy of the material itself. Since many minerals such as coal, iron ore, and rock contain a certain amount of radioactive substances such as uranium, cesium, and cobalt, when the proportion of these radioactive substances in the material remains unchanged, the amount of the material can be deduced accordingly by measuring the radioactive energy. Therefore, in the application scenarios of thermal power plants and smelters, passive nuclear level meters are often used to detect the material level in the storage tank.

[0003] In the prior art, since the proportion of radioactive materials contained in many minerals, such as coal, varies greatly, the content of radioactive materials in coal from different origins or different locations of the same origin varies by dozens of times or more. Therefore, when the type of material in the storage tank changes, it is difficult for the passive nuclear level meter to adapt to the change in material weight, resulting in errors in the detection of the material level. Summary of the invention

[0004] In order to improve the accuracy of a passive nuclear level meter in detecting the levels of different types of materials in a storage tank, the present application provides a passive nuclear level measurement device and a measurement method thereof.

[0005] The present application provides a passive nuclear material level measurement device and a measurement method thereof using the following technical solutions:

[0006] A passive nuclear material level measuring device and a measuring method thereof, comprising a material bin and a reference bin, wherein the reference bin and the material bin are arranged in the same proportion, the reference bin is empty, a mounting seat is fixedly mounted on the outer wall of the material bin, a servo turntable is fixedly mounted on the mounting seat, and a first passive nuclear material level meter is fixedly mounted on the servo turntable; and:

[0007] A second passive nuclear material level meter is fixedly mounted on the outer wall of the reference bin;

[0008] A data processor, connected to the data output terminal of the first passive nuclear material level meter, for determining the material type and the radiation coefficient of the material in the silo;

[0009] The signal processor is connected to the signal output ends of the data processor, the first passive nuclear level meter and the second passive nuclear level meter, and is used to calculate and output the current material level according to the radiation coefficient and current radiation intensity of the material.

[0010] By adopting the above technical scheme, before actual production and processing, the servo turntable on the mounting seat drives the first passive nuclear level meter installed on the servo turntable to rotate 60° clockwise or counterclockwise and then return to the initial position, the data processor receives the radioactivity intensity data of the material collected during the rotation of the first passive nuclear level meter and determines the material type name and the radioactivity coefficient of the material in the silo, the second passive nuclear level meter detects the radioactivity intensity in the reference silo in real time, and the signal processor automatically calculates the material level based on the radioactivity intensity of the material measured by the current first passive nuclear level meter, the radioactivity coefficient of the material type, and the material level, thereby realizing the technical effect of automatically detecting the material type, and automatically matching and calculating the material level based on the radioactivity coefficient of the material, and effectively improving the accuracy of the material level detection in the silo.

[0011] Preferably, a cleaning mechanism for cleaning the inner wall of the silo is fixedly installed on the top of the silo, and the cleaning mechanism includes a water supply hose, and a high-pressure rotating nozzle is installed at the water outlet of the water supply hose, and the water inlet end of the water supply pipe is connected to the water supply system in the factory area;

[0012] The top of the silo is provided with a cleaning opening for the water supply hose to extend into, and the top of the silo is detachably provided with a cover, which covers the cleaning opening.

[0013] By adopting the above technical solution, when it is necessary to clean the silo, the operator can climb to the top of the silo through the escalator on the side of the silo, open the cover on the top of the silo, put the high-pressure rotary nozzle into the silo, and introduce water through a hose, and spray high-pressure water through the high-pressure rotary nozzle. The high-pressure water is sprayed on the inner wall of the silo to clean the residual material remaining on the inner wall of the silo, which is convenient for the operator to clean the inside of the silo.

[0014] A data processing method for a passive nuclear material level measuring device comprises the following steps:

[0015] Step S1: Determine k of the material in the silo, where k represents the radiation coefficient of the material stored in the silo;

[0016] Step S2: setting a reference bin, the reference bin is set in the same proportion as the material bin, and the reference bin is empty, and a second passive nuclear material level meter is installed on the reference bin, and Ni is obtained by the second passive nuclear material level meter, where Ni is the radiation intensity measured by the second passive nuclear material level meter when the material in the reference bin is empty;

[0017] Step S3: Obtain Ns and Ni, and calculate Hs according to the formula Hs=k(Ns-Ni), where Ns represents the current radiation intensity of the material in the silo, and Hs represents the current material level in the silo.

[0018] By adopting the above technical scheme, before actual production is carried out, the radiation coefficient k of the material type stored in the silo can be predetermined by matching and using the first passive nuclear level meter, the second passive nuclear level meter, the data processor and the signal processor. Then, the radiation intensity Ni of the silo when empty is measured by the second passive nuclear level meter, and the current material level can be calculated by the calculation formula of Hs. Before the material level in the silo is detected, the material type can be detected, and the material level in the silo can be calculated based on the radiation coefficient k of the material type. This can reduce the material level detection error caused by the change of the material type, and improve the accuracy of the material level detection in the silo.

[0019] Preferably, step S1 comprises the following steps:

[0020] Step S11: Establish a cloud platform;

[0021] Step S12: obtaining material information of different materials and storing it in the cloud platform, wherein the material information includes material name, material radiation coefficient k, and radiation intensity scanning data Qm of the material when the material is full;

[0022] Step S13: obtaining the radiation intensity scanning data Qs of the material in the silo, obtaining the material type information from the cloud platform, and comparing Qs with Qm one by one to determine the material type name and the radiation coefficient k of the material type;

[0023] Step S14: Obtain the radiation coefficient k of the material in the silo, and calculate Hs based on the formula Hs=k*(Ns-Ni), wherein Hs represents the current material level in the silo, and Ns represents the radiation intensity of the material in the silo measured by the first passive nuclear level device.

[0024] By adopting the above technical solution, when filling materials in the silo, the material types can be named in advance according to the origin of the materials, and the material type radiation coefficient k of each material type and the radiation intensity scanning data Qm of the material when the material is full are stored in the cloud platform, so as to facilitate the use of relevant data in the subsequent process of determining the material type. After obtaining the radiation coefficient k of the material in the silo, the current material level of the material can be calculated based on the formula Hs=k*(Ns-Ni), achieving the technical effect of accurately calculating the material level of the material in the silo.

[0025] Preferably, the step S12 comprises the following steps:

[0026] Step S121: when the silo is full, the servo turntable drives the first passive nuclear material level meter to rotate 60° counterclockwise or clockwise and then reset;

[0027] Step S122: collecting the radiation intensity data of the material collected by the first passive nuclear material level meter at a time interval of 0.02 seconds and storing it as radiation intensity scanning data Qm;

[0028] Step S123: Obtain Nm and Hm, and calculate the radiation coefficient k of the material based on the formula k=Hm / (Nm-Ni), where Nm is the radiation intensity of the material when the silo is full, and Hm is the material level when the silo is full;

[0029] Step S124: storing the material name, radiation intensity scanning data Qm, and radiation coefficient k of the material in a one-to-one correspondence in the cloud platform.

[0030] By adopting the above technical scheme, when filling materials, when the materials are full, the first passive nuclear level meter can be driven by the servo turntable to rotate 60° in the counterclockwise or clockwise direction and then reset, and the detection direction of the first passive nuclear level meter can be changed in the horizontal direction, and the radiation intensity data of the materials collected by the first passive nuclear level meter are collected at time intervals of 0.02 seconds, and stored as radiation intensity scanning data Qm; since the full material level Hm in the silo is a known value, the radiation coefficient k of different types of materials can be calculated based on the radiation intensity Nm of the material in the silo when it is full measured by the first passive nuclear level meter and the radiation intensity Ni of the material in the reference silo (silo) when it is empty measured by the second passive nuclear level meter, and the value is stored in the cloud platform.

[0031] Preferably, the step S13 comprises the following steps:

[0032] Step S131: driving the first passive nuclear material level meter to rotate 60° counterclockwise or clockwise via the servo turntable and then reset;

[0033] Step S132: collecting the material radiation intensity data collected by the first passive nuclear material level meter during the servo turntable driving process at a time interval of 0.02 seconds to obtain radiation intensity scanning data Qs;

[0034] Step S133: Compare Qs and Qm to determine the material name and material radiation coefficient k that are closest in curve shape.

[0035] By adopting the above technical solution, in the actual production and processing process, before the first passive nuclear level meter is actually used to detect the material level in the silo, the servo turntable can drive the first passive nuclear level meter to rotate 60° in the clockwise or counterclockwise direction and then reset, and change the detection direction of the first passive nuclear level meter in the horizontal direction, and collect the radiation intensity data of the material collected by the first passive nuclear level meter at a time interval of 0.02s, and calibrate it as the radiation intensity scanning data Qs. By comparing Qs with Qm, the material type in the silo can be determined, so as to obtain the radiation coefficient k of the material of this type from the cloud platform, so as to calculate the current material level of the material in the silo through the formula Hs=k*(Ns-Ni).

[0036] Preferably, the step S133 includes the following steps:

[0037] Step S1331: Obtain the difference ΔQ between Qm and Qs;

[0038] Step S1332: Calculate the average value Q0 of the ΔQ;

[0039] Step S1333: According to the formula j=∑(Qm-Qs-Q0) 2 Calculate j, where j represents the deviation coefficient between Qs and Qm;

[0040] Step S1334: Take the material type j with the smallest deviation coefficient and mark it as the material type of the material in the silo.

[0041] By adopting the above technical solution, after obtaining the radiation intensity scanning data Qs of the current material, by calculating the difference ΔQ between Qm and Qs of different materials and taking the average value Q0 of ΔQ, the formula j = ∑(Qm-Qs-Q0) can be used. 2 Calculate the deviation coefficient j between Qs and Qm of different material types. If the value of the deviation coefficient j is smaller, it can be determined that the similarity between the data curves of Qs and Qm is higher. Then the material type with the smallest deviation coefficient j can be determined as the material type in the silo, and the name of the material type and the radiation coefficient of the material type can be obtained from the cloud platform.

[0042] In summary, the passive nuclear material level measurement device and the measurement method thereof of the present application include at least one of the following beneficial technical effects:

[0043] 1. Before the actual production and processing, the servo turntable on the mounting seat drives the first passive nuclear level meter installed on the servo turntable to rotate 60° clockwise or counterclockwise and then return to the initial position. The data processor receives the radioactivity intensity data of the material collected during the rotation of the first passive nuclear level meter and determines the material type name and the radioactivity coefficient of the material in the silo. The second passive nuclear level meter detects the radioactivity intensity in the reference silo in real time. The signal processor automatically calculates the material level based on the radioactivity intensity of the material measured by the current first passive nuclear level meter, the radioactivity coefficient of the material type, and the material level. It can realize the technical effect of automatically detecting the material type and automatically matching and calculating the material level according to the radioactivity coefficient of the material, which can effectively improve the accuracy of the material level detection in the silo;

[0044] 2. The curves formed by the radioactivity data measured by driving the first passive nuclear material level meter to rotate by the servo turntable have different shapes; the radioactive material content of the same type of material is similar, and the curves formed by the radiation intensity data measured by driving the first passive nuclear material level meter to rotate by the servo turntable have high similarity. The type of material in the silo can be determined by comparing the similarity of the curves. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram used to illustrate the overall structure of the passive nuclear material level measurement device in an embodiment of the present application.

[0046] Figure 2 It is a schematic diagram of the main process of the measurement method of the passive nuclear material level measurement device used in the embodiment of the present application.

[0047] Figure 3 It is a schematic diagram used to illustrate the specific process of step S1 in an embodiment of the present application.

[0048] Figure 4 It is a schematic diagram used to illustrate the specific process of step S12 in an embodiment of the present application.

[0049] Figure 5 It is a schematic diagram used to illustrate the specific process of step S13 in an embodiment of the present application.

[0050] Figure 6 This is a schematic diagram of the Qm curve for showing three types of materials in the embodiments of the present application.

[0051] Explanation of the accompanying drawings: 1. Material bin; 2. Reference bin; 3. Mounting seat; 4. Servo turntable; 5. First passive nuclear material level meter; 6. Second passive nuclear material level meter. DETAILED DESCRIPTION

[0052] The following is combined with Figure 1-6 This application is described in further detail.

[0053] Example 1

[0054] The present application embodiment discloses a passive nuclear material level measurement device and a measurement method thereof. Figure 1-Figure 6 It mainly includes a material bin 1 and a reference bin 2, wherein the reference bin 2 is set in the same proportion as the material bin 1, and the reference bin 2 is empty.

[0055] Please refer to Figure 1 In the embodiment of the present application, a mounting seat 3 is fixedly mounted on the outer wall of the silo 1, a servo turntable 4 is fixedly mounted on the bottom of the mounting seat 3, a first passive nuclear level meter 5 is fixedly mounted on the table top of the servo turntable 4, and the detection end of the first passive nuclear level meter 5 is arranged toward the outer wall of the silo 1.

[0056] In addition, a mounting seat 3 is also fixedly mounted on the outer wall of the reference bin 2 , a second passive nuclear level meter 6 is fixedly mounted on the bottom of the mounting seat 3 , and a detection end of the second passive nuclear level meter 6 is arranged toward the outer wall of the reference bin 2 .

[0057] Among them, the data output end of the first passive nuclear material level meter 5 is connected to the data processor through a data cable, the signal output end of the data processor is connected to the signal processor through a wireless network module signal, and the signal input end of the signal processor is also connected to the signal output end of the first passive nuclear material level meter 5 and the second passive nuclear material level meter 6.

[0058] Before actually using the first passive nuclear level meter 5 to detect the material level in the silo 1 , the servo turntable 4 drives the first passive nuclear level meter 5 to rotate 60° clockwise or counterclockwise and then returns to the initial position, so that the detection end of the first passive nuclear level meter 5 is aligned with the outer wall of the silo 1 .

[0059] During the rotation of the first passive nuclear level meter 5, the data processor collects the radiation intensity data measured by the first passive nuclear level meter at a time interval of 0.02s. After comparing the radiation intensity data, the material type in the silo 1 can be calculated, and the radiation coefficient corresponding to the material type can be determined. The signal processor can calculate the material level in the silo 1 based on the material type in the silo 1, the radiation coefficient of the material, and the radiation intensity of the current material and output it.

[0060] By using the servo turntable 4, the first passive nuclear level meter 5 and the data processor in combination with each other, the type of material in the silo 1 can be identified before detection, and the radiation coefficient of the material in the silo 1 can be determined. By using the signal processor, the second passive nuclear level meter 6 and the data processor in combination with each other, the level of the material in the silo 1 can be calculated based on the radiation coefficient of the material in the silo 1, the material space-time radiation intensity value measured by the second passive nuclear level meter 6, and the current radiation intensity value measured by the first passive nuclear level meter 5. This can reduce the level measurement error of the first passive nuclear level meter 5 caused by the change of the type of material in the silo 1, and improve the accuracy of the level detection of the material in the silo 1.

[0061] Reference Figure 2-Figure 5 In an embodiment of the present application, a measurement method of a passive nuclear material level measurement device comprises the following steps:

[0062] Step S1: Determine k of the material in the silo, where k represents the radiation coefficient of the material stored in the silo;

[0063] Step S2: setting a reference bin, the reference bin is set in the same proportion as the material bin, and the reference bin is empty, and a second passive nuclear material level meter is installed on the reference bin, and Ni is obtained by the second passive nuclear material level meter, where Ni is the radiation intensity measured by the second passive nuclear material level meter when the material in the reference bin is empty;

[0064] Step S3: Obtain Ns and Ni, and calculate Hs according to the formula Hs=k(Ns-Ni), where Ns represents the current radiation intensity of the material in the silo, and Hs represents the current material level in the silo.

[0065] Wherein, step S1 comprises the following steps:

[0066] Step S11: Establish a cloud platform;

[0067] Step S12: obtaining material information of different materials and storing it in the cloud platform, wherein the material information includes material name, material radiation coefficient k, and radiation intensity scanning data Qm of the material when the material is full;

[0068] Step S13: obtaining the radiation intensity scanning data Qs of the material in the silo, obtaining the material type information from the cloud platform, and comparing Qs with Qm one by one to determine the material type name and the radiation coefficient k of the material type;

[0069] Step S14: Obtain the radiation coefficient k of the material in the silo, and calculate Hs based on the formula Hs=k*(Ns-Ni), wherein Hs represents the current material level in the silo, and Ns represents the radiation intensity of the material in the silo measured by the first passive nuclear level device.

[0070] In the actual production and processing process, for each different type of material, the material can be named according to the origin and type to determine the name of the material, and the radiation coefficient k of each type of material and the radiation intensity scanning data Qm of the material when the silo is full are obtained through the first passive nuclear level meter, so as to facilitate subsequent use to determine the material type and radiation coefficient k of the material in the silo.

[0071] Before actually using the first passive nuclear level meter to detect the material level in the silo, the first passive nuclear level meter can be driven to rotate by the servo turntable to obtain the current radiation intensity scanning data Qs of the material in the silo. By comparing Qs with Qm in the cloud platform, the material type name and material type radiation coefficient k of the material in the silo can be determined.

[0072] According to the radiation coefficient k of the material in the current silo, the current radiation intensity Ns of the material in the silo measured by the first passive nuclear level meter, and the radiation intensity Ni when the reference silo is empty measured by the second passive nuclear level meter, since the reference silo and the silo are set in the same proportion, the radiation intensity Ni of the empty reference silo measured by the second passive nuclear level meter can be equivalent to the radiation intensity when the silo is empty. The current material level in the silo can be calculated based on the formula Hs=k*(Ns-Ni).

[0073] Wherein, step S12 includes the following steps:

[0074] Step S121: when the silo is full, the servo turntable drives the first passive nuclear material level meter to rotate 60° counterclockwise or clockwise and then reset;

[0075] Step S122: collecting the radiation intensity data of the material collected by the first passive nuclear material level meter at a time interval of 0.02 seconds and storing it as radiation intensity scanning data Qm;

[0076] Step S123: Obtain Nm and Hm, and calculate the radiation coefficient k of the material based on the formula k=Hm / (Nm-Ni), where Nm is the radiation intensity of the material when the silo is full, and Hm is the material level when the silo is full;

[0077] Step S124: storing the material name, radiation intensity scanning data Qm, and radiation coefficient k of the material in a one-to-one correspondence in the cloud platform.

[0078] In the actual production and processing process, each type of material can be measured in advance, and each type of material can be filled into the silo to make the silo full. At this time, the radiation intensity Nm when the silo is full can be measured by the first passive nuclear level meter; then, the servo turntable drives the first passive nuclear level meter to rotate 60° clockwise or counterclockwise. During the rotation of the first passive nuclear level meter, the radiation intensity data of the material when the silo is full is collected at a time interval of 0.02s and calibrated as the radiation intensity scanning data Qm of the material type, and stored in the cloud platform.

[0079] Since the material level value Hm of the material when the silo is full is the maximum material level of the silo, which is a known value, the radiation coefficient of the material can be calculated through the formula k=Hm / (Nm-Ni) and stored in the cloud platform for subsequent calls.

[0080] Reference Figure 6 , which is the Qm data curve of coal powder from three different origins in the silo of a thermal power plant. The radioactive material content of the three coal powders is different, and the Qm curve shapes are different.

[0081] Step S13 includes the following steps:

[0082] Step S131: driving the first passive nuclear material level meter to rotate 60° counterclockwise or clockwise via the servo turntable and then reset;

[0083] Step S132: collecting the material radiation intensity data collected by the first passive nuclear material level meter during the servo turntable driving process at a time interval of 0.02 seconds to obtain radiation intensity scanning data Qs;

[0084] Step S133: Compare Qs and Qm to determine the material name and material radiation coefficient k that are closest in curve shape.

[0085] Before actual production, the first passive nuclear level meter is driven by the servo turntable to rotate 60° in the clockwise or counterclockwise direction and then reset, and the radiation intensity data collected by the first passive nuclear level meter is collected at a time interval of 0.02s and calibrated as the current radiation intensity scanning data Qs in the silo. By comparing Qs with the radiation intensity scanning data Qm of each material type in the cloud platform, the material type and the radiation coefficient k of the material in the silo can be determined, and the current material level of the material can be calculated based on the formula Hs=k*(Ns-Ni)=Hm / (Nm-Ni)*(Ns-Ni), which can achieve the technical effect of automatically identifying the material type and the radiation coefficient k of the material in the silo without manual confirmation of the material type, and can accurately calculate the material level of the material in the silo based on the radiation coefficient of the material, thereby reducing the material level detection error of the first passive nuclear level meter caused by changes in the material type.

[0086] Since the content of radioactive substances in different types of materials is different, the shapes of curves formed by radioactive data measured by driving the first passive nuclear level meter to rotate by the servo turntable are different; the content of radioactive substances in the same type of materials is similar, and the similarity of the curves formed by the radiation intensity data measured by driving the first passive nuclear level meter to rotate by the servo turntable is relatively high. The type of material in the silo can be determined by comparing the similarity of the curves.

[0087] Reference Figure 5 , the data comparison method for determining the material type of the material includes the following steps: Step S1331: obtaining the difference ΔQ between Qm and Qs;

[0088] Step S1332: Calculate the average value Q0 of the ΔQ;

[0089] Step S1333: According to the formula j=∑(Qm-Qs-Q0) 2 Calculate j, where j represents the deviation coefficient between Qs and Qm;

[0090] Step S1334: Take the material type j with the smallest deviation coefficient and mark it as the material type of the material in the silo.

[0091] After obtaining the current radiation intensity scanning data Qs of the materials in the silo, the difference ΔQ between Qm and Qs of each type of material is calculated respectively, and the formula j = ∑(Qm-Qs-Q0) 2 By calculating the deviation coefficient between Qs and Qm of various material types, taking Qm with the smallest j value can determine the most similar material type, which can achieve the technical effect of automatically identifying the material type in the silo.

[0092] The implementation principle of a passive nuclear material level measurement device and a measurement method thereof in an embodiment of the present application is as follows: due to the different contents of radioactive substances in materials of different types, the shapes of curves formed by radioactivity data measured by driving the first passive nuclear material level meter to rotate by the servo turntable are different; the radioactive substance contents of the same type of material are similar, and the similarity of the curves formed by the radiation intensity data measured by driving the first passive nuclear material level meter to rotate by the servo turntable is relatively high, and the type of material in the silo can be determined by comparing the similarity of the curves. Before actual production, the first passive nuclear level meter is driven by the servo turntable to rotate 60° in the clockwise or counterclockwise direction and then reset, and the radiation intensity data collected by the first passive nuclear level meter is collected at a time interval of 0.02s and calibrated as the current radiation intensity scanning data Qs in the silo. By comparing Qs with the radiation intensity scanning data Qm of each material type in the cloud platform, the material type and the radiation coefficient k of the material in the silo can be determined, and the current material level of the material can be calculated based on the formula Hs=k*(Ns-Ni)=Hm / (Nm-Ni)*(Ns-Ni), which can achieve the technical effect of automatically identifying the material type and the radiation coefficient k of the material in the silo without manual confirmation of the material type, and can accurately calculate the material level of the material in the silo based on the radiation coefficient of the material, thereby reducing the material level detection error of the first passive nuclear level meter caused by changes in the material type.

[0093] Example 2

[0094] In the embodiment of the present application, a cleaning mechanism for cleaning the internal silo wall is fixedly installed on the top of the silo. The cleaning mechanism includes a water supply hose, the water inlet end of the water supply hose is connected to the water supply system in the factory area, and the water outlet end of the water supply hose is installed with a high-pressure rotating nozzle; a cleaning port is opened on the top of the silo, and a cover is fixedly connected to the top of the silo by bolts, and the cover covers the top of the cleaning port.

[0095] When it is necessary to clean the silo, the operator can climb to the top of the silo through the escalator on the side of the silo, open the cover on the top of the silo, put the high-pressure rotary nozzle into the silo, and introduce water through a hose, and spray high-pressure water through the high-pressure rotary nozzle. The high-pressure water is sprayed on the inner wall of the silo to clean the residual material on the inner wall of the silo, which makes it convenient for the operator to clean the inside of the silo.

[0096] It should be noted that, in the embodiment of the present application, a storage box is fixedly installed on the top of the silo, which can be used to store water supply hoses and high-pressure rotary nozzles.

[0097] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A passive nuclear material level measuring device, characterized in that: The invention comprises a material bin (1) and a reference bin (2), wherein the reference bin (2) and the material bin (1) are arranged in the same proportion, the reference bin (2) is empty, a mounting seat (3) is fixedly mounted on the outer wall of the material bin (1), a servo turntable (4) is fixedly mounted on the mounting seat (3), and a first passive nuclear material level meter (5) is fixedly mounted on the servo turntable (4); as well as: A second passive nuclear material level meter (6) is fixedly mounted on the outer wall of the reference bin (2); A data processor, connected to the data output terminal of the first passive nuclear material level meter (5), for determining the material type and the radiation coefficient of the material in the silo (1); A signal processor is connected to the signal output ends of the data processor, the first passive nuclear material level meter (5) and the second passive nuclear material level meter (6) and is used to calculate and output the current material level of the material based on the radiation coefficient and current radiation intensity of the material.

2. A passive nuclear material level measuring device according to claim 1, characterized in that: A cleaning mechanism for cleaning the inner wall of the silo (1) is fixedly installed on the top of the silo (1), the cleaning mechanism comprising a water supply hose, a high-pressure rotating nozzle is installed at the water outlet of the water supply hose, and the water inlet of the water supply pipe is connected to the water supply system in the factory area; The top of the silo (1) is provided with a cleaning opening for the water supply hose to extend into, and a cover is detachably mounted on the top of the silo (1), the cover covering the cleaning opening.

3. A data processing method based on a passive nuclear material level measurement device according to any one of claims 1 to 2, characterized in that: The following steps are involved: Step S1: Determine k of the material in the silo, where k represents the radiation coefficient of the material stored in the silo; Step S2: setting a reference bin, the reference bin is set in the same proportion as the material bin, and the reference bin is empty, and a second passive nuclear material level meter is installed on the reference bin, and Ni is obtained by the second passive nuclear material level meter, where Ni is the radiation intensity measured by the second passive nuclear material level meter when the material in the reference bin is empty; Step S3: Obtain Ns and Ni, and calculate Hs according to the formula Hs=k(Ns-Ni), where Ns represents the current radiation intensity of the material in the silo, and Hs represents the current material level in the silo.

4. The data processing method of a passive nuclear material level measurement device according to claim 3 is characterized in that: The step S1 comprises the following steps: Step S11: Establish a cloud platform; Step S12: obtaining material information of different materials and storing it in the cloud platform, wherein the material information includes material name, material radiation coefficient k, and radiation intensity scanning data Qm of the material when the material is full; Step S13: obtaining the radiation intensity scanning data Qs of the material in the silo, obtaining the material type information from the cloud platform, and comparing Qs with Qm one by one to determine the material type name and the radiation coefficient k of the material type; Step S14: Obtain the radiation coefficient k of the material in the silo, and calculate Hs based on the formula Hs=k*(Ns-Ni), wherein Hs represents the current material level in the silo, and Ns represents the radiation intensity of the material in the silo measured by the first passive nuclear level device.

5. The data processing method of a passive nuclear material level measuring device according to claim 4, characterized in that: The step S12 comprises the following steps: Step S121: when the silo is full, the servo turntable drives the first passive nuclear material level meter to rotate 60° counterclockwise or clockwise and then reset; Step S122: collecting the radiation intensity data of the material collected by the first passive nuclear material level meter at a time interval of 0.02 seconds and storing it as radiation intensity scanning data Qm; Step S123: Obtain Nm and Hm, and calculate the radiation coefficient k of the material based on the formula k=Hm / (Nm-Ni), where Nm is the radiation intensity of the material when the silo is full, and Hm is the material level when the silo is full; Step S124: storing the material name, radiation intensity scanning data Qm, and radiation coefficient k of the material in a one-to-one correspondence in the cloud platform.

6. The data processing method of a passive nuclear material level measuring device according to claim 5, characterized in that: The step S13 comprises the following steps: Step S131: driving the first passive nuclear material level meter to rotate 60° counterclockwise or clockwise via the servo turntable and then reset; Step S132: collecting the material radiation intensity data collected by the first passive nuclear material level meter during the servo turntable driving process at a time interval of 0.02 seconds to obtain radiation intensity scanning data Qs; Step S133: Compare Qs and Qm to determine the material name and material radiation coefficient k that are closest in curve shape.

7. The data processing method of a passive nuclear material level measuring device according to claim 6, characterized in that: The step S133 comprises the following steps: Step S1331: Obtain the difference ΔQ between Qm and Qs; Step S1332: Calculate the average value Q0 of the ΔQ; Step S1333: According to the formula j=∑(Qm-Qs-Q0) 2 Calculate j, where j represents the deviation coefficient between Qs and Qm; Step S1334: Take the material type j with the smallest deviation coefficient and mark it as the material type of the material in the silo.

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