Hydrogen online detection method, equipment and medium

Abstract

The invention discloses a hydrogen online detection method, equipment and a medium, relates to the field of hydrogen detection, and solves the problem of inaccurate hydrogen quality caused by neglect of dynamic change of hydrogen in a transportation process when hydrogen quality is detected in a current hydrogen refueling station. The method comprises the following steps: obtaining a purity index of hydrogen to be detected based on the application of the hydrogen to be detected; performing preliminary purity detection on the to-be-detected hydrogen before transportation to obtain a purity detection result of the to-be-detected hydrogen before transportation; performing secondary purity detection on the to-be-detected hydrogen before transportation to obtain a detection result of secondary purity detection; performing purity detection on the transported to-be-detected hydrogen to obtain a purity detection result of the transported to-be-detected hydrogen; the purity conditions of the to-be-detected hydrogen before and after transportation are intelligently compared, the purity change conditions of the to-be-detected hydrogen before and after transportation are obtained, the quality of the hydrogen before and after transportation is detected, and the situation that the quality of the hydrogen is abnormal due to transportation factors is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydrogen detection, and specifically relates to an on-line hydrogen detection method, device and medium. Background Technique

[0002] Hydrogen is a simple substance formed by hydrogen elements. Under normal temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, highly flammable and insoluble in water gas. The density of hydrogen is 0.089 g / L, about 1 / 14 of air, and it is the lightest gas known. Industrially, hydrogen is generally produced from natural gas or water gas, and the produced hydrogen is widely used in cracking reactions in the petrochemical industry, production of ammonia, etc. With the large-scale use of hydrogen, the quality detection of hydrogen is also an indispensable part.

[0003] Currently, when detecting the quality of hydrogen in a hydrogen refueling station, the quality of hydrogen is usually detected at fixed nodes such as when assembling hydrogen or when arriving at the hydrogen refueling station, ignoring the dynamic changes of hydrogen during transportation, resulting in inaccurate hydrogen quality;

[0004] For this reason, the present invention proposes an on-line hydrogen detection method, device and medium. Summary of the Invention

[0005] The purpose of the present invention is to propose an on-line hydrogen detection method, device and medium to solve the problems raised in the above background technique.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] An on-line hydrogen detection method, the method includes:

[0008] Step S1, based on the use of the hydrogen to be detected, obtain the purity index of the hydrogen to be detected;

[0009] Step S2, perform a preliminary purity detection on the hydrogen to be detected before transportation to obtain the purity detection result of the hydrogen to be detected before transportation;

[0010] Step S3, perform a secondary purity detection on the hydrogen to be detected before transportation to obtain the detection result of the secondary purity detection;

[0011] Step S4, perform a purity detection on the hydrogen to be detected after transportation to obtain the purity detection result of the hydrogen to be detected after transportation;

[0012] Step S5, perform an intelligent comparison on the purity of the hydrogen to be detected before and after transportation to obtain the purity change of the hydrogen to be detected before and after transportation.

[0013] Further, the step S2 includes the following sub-steps:

[0014] Step S21: Before sampling, rinse the sampling container with the hydrogen to be detected several times, so that the sampling container collects a fixed volume of the hydrogen to be detected in a clean state as multiple groups of hydrogen samples;

[0015] Step S22: Number the hydrogen samples, and inject the hydrogen samples into the gas chromatograph in the detection order from small to large according to the numbers;

[0016] Step S23: Separate hydrogen and impurity gases through the chromatographic column, and then use the detection equipment to detect multiple groups of hydrogen samples;

[0017] Step S24: Calculate the real-time hydrogen purity and impurity gas content of multiple groups of hydrogen samples based on the peak area;

[0018] Step S25: If the real-time hydrogen purity of multiple groups of hydrogen samples is greater than or equal to the purity index, proceed to the next step;

[0019] Step S26: If the real-time hydrogen purity of any one group of hydrogen samples is less than the purity index, generate a quality inspection unqualified signal.

[0020] Further, the step S3 includes the following sub-steps:

[0021] Step S31: Pass the remaining hydrogen samples into the dew point meter in the detection order from small to large according to the numbers;

[0022] Step S32: Then measure the dew point temperature of multiple groups of hydrogen samples in the dew point meter;

[0023] Step S33: Calculate the real-time moisture content of multiple groups of hydrogen samples based on the dew point temperature;

[0024] Step S34: If the real-time moisture content of the hydrogen samples is less than or equal to the moisture content index, generate a quality inspection qualified signal;

[0025] Step S35: If the real-time moisture content of any one group of hydrogen samples is greater than the moisture content index, generate a quality inspection unqualified signal.

[0026] Further, the step S4 includes the following sub-steps:

[0027] Step S41: Conduct a preliminary purity test on the hydrogen to be detected after transportation according to steps S21 to S26, and obtain the real-time hydrogen purity of the hydrogen samples corresponding to the hydrogen to be detected after transportation;

[0028] Step S42: If the real-time hydrogen purity of all hydrogen samples corresponding to the hydrogen to be detected after transportation is greater than or equal to the purity index, proceed to the next step;

[0029] If the real-time hydrogen purity of any one group of hydrogen samples corresponding to the hydrogen to be detected after transportation is less than the purity index, a quality inspection unqualified signal is generated;

[0030] Step S43, perform secondary purity detection on the hydrogen to be detected after transportation according to steps S31 to S35, and obtain the real-time moisture content of the hydrogen samples corresponding to the hydrogen to be detected after transportation;

[0031] Step S44, if the real-time moisture content of all hydrogen samples corresponding to the hydrogen to be detected after transportation is less than or equal to the moisture content index, proceed to the next step;

[0032] If the real-time moisture content of any one group of hydrogen samples corresponding to the hydrogen to be detected after transportation is greater than the moisture content index, a quality inspection unqualified signal is generated.

[0033] Further, the step S5 includes the following sub-steps:

[0034] Step S51, obtain the real-time hydrogen purity of multiple groups of hydrogen samples before transportation, add up the real-time hydrogen purities of multiple groups of hydrogen samples and take the average to obtain the first hydrogen purity average value of the hydrogen samples before transportation;

[0035] Similarly, obtain the real-time hydrogen purity of the hydrogen samples corresponding to the hydrogen to be detected after transportation, add up the real-time hydrogen purities of multiple groups of hydrogen samples and take the average to obtain the second hydrogen purity average value of the hydrogen samples after transportation;

[0036] Step S52, compare the first hydrogen purity average value with the second hydrogen purity average value;

[0037] If the second hydrogen purity is greater than or equal to the first hydrogen purity average value, no operation is performed;

[0038] If the second hydrogen purity is less than the first hydrogen purity average value, subtract the second hydrogen purity from the first hydrogen purity average value to obtain the purity change value of the hydrogen samples corresponding to the hydrogen to be detected after transportation;

[0039] Step S53, if the purity change value is greater than or equal to the purity change threshold, generate a purity anomaly signal;

[0040] If the purity change value is less than the purity change threshold, proceed to the next step;

[0041] Step S54, similarly, obtain the real-time moisture content of multiple groups of hydrogen samples before transportation, add up the real-time moisture contents of multiple groups of hydrogen samples and take the average to obtain the first moisture content average value of the hydrogen samples before transportation;

[0042] Similarly, obtain the real-time moisture content of the hydrogen sample corresponding to the hydrogen to be detected after transportation, and sum up the real-time moisture contents of multiple groups of hydrogen samples and take the average to obtain the second average moisture content of the hydrogen samples after transportation;

[0043] Step S55, compare the first average moisture content with the second average moisture content;

[0044] If the second average moisture content is less than or equal to the first average moisture content, do not perform any operation;

[0045] If the second average moisture content is greater than the first average moisture content, subtract the first average moisture content from the second average moisture content to obtain the moisture change value of the hydrogen sample corresponding to the hydrogen to be detected after transportation;

[0046] Step S56, if the moisture change value is greater than or equal to the moisture change threshold, generate a purity anomaly signal;

[0047] If the moisture change value is less than the moisture change threshold, generate a purity normal signal.

[0048] Furthermore, the online hydrogen detection method further includes:

[0049] Step S6, obtain the historical refueling data and historical detection data of the hydrogen refueling station, and perform data analysis on the hydrogen refueling station based on the historical refueling data and historical detection data; wherein, the historical refueling data is the daily hydrogen storage volume of the hydrogen refueling station every day last month, the daily refueling times of the hydrogen refueling station last month, and the hydrogen refueling volume each time; the historical detection data is the historical online detection times and historical online detection anomaly times of the hydrogen refueling station;

[0050] Step S7, calculate the online detection value of the hydrogen refueling station by combining the days anomaly rate and the online detection anomaly rate, determine the detection strategy of the hydrogen refueling station based on the online detection value, and perform online detection on the hydrogen refueling station.

[0051] Furthermore, the step S6 includes the following sub-steps:

[0052] Step S61, obtain the daily refueling times of the hydrogen refueling station last month and the hydrogen refueling volume each time, and sum up the hydrogen refueling volumes each time to obtain the daily hydrogen refueling volume of the hydrogen refueling station;

[0053] Step S62, then obtain the daily hydrogen storage volume of the hydrogen refueling station every day last month, and subtract the daily hydrogen storage volume of the current day from the daily hydrogen storage volume of the previous day to obtain the daily hydrogen consumption of the hydrogen refueling station;

[0054] Step S63, based on time, obtain the daily hydrogen consumption and daily hydrogen refueling volume of the hydrogen refueling station on the same day;

[0055] If the daily hydrogen consumption is equal to the daily hydrogen refueling volume, no operation is performed. If the daily hydrogen consumption is not equal to the daily hydrogen refueling volume, proceed to the next step;

[0056] Step S64, if the daily hydrogen consumption is less than the daily hydrogen refueling volume, generate an abnormal alarm signal;

[0057] If the daily hydrogen consumption is greater than the daily hydrogen refueling volume, subtract the daily hydrogen refueling volume from the daily hydrogen consumption to obtain the daily hydrogen deviation volume of the hydrogen refueling station. If the daily hydrogen deviation volume is less than or equal to the normal hydrogen loss volume, no operation is performed. If the daily hydrogen deviation volume is greater than the normal hydrogen loss volume, mark the current day of the month as an abnormal day;

[0058] Step S65, count the number of abnormal days and compare it with the number of days in the current month to obtain the abnormal rate of the number of days of the hydrogen refueling station;

[0059] Step S66, obtain the historical online detection times and historical online detection abnormal times of the hydrogen refueling station, and compare the historical online detection abnormal times with the historical online detection times to obtain the online detection abnormal rate of the hydrogen refueling station.

[0060] Furthermore, the step S7 includes the following sub-steps:

[0061] Step S71, obtain the abnormal rate of the number of days and the online detection abnormal rate of the hydrogen refueling station;

[0062] Step S72, calculate the online detection value of the hydrogen refueling station;

[0063] Step S73, if the online detection value is less than the first online detection threshold, the hydrogen refueling station executes the third detection strategy;

[0064] If the online detection value is greater than or equal to the first online detection threshold and less than the second online detection threshold, the hydrogen refueling station executes the second detection strategy;

[0065] If the online detection value is greater than or equal to the second online detection threshold, the hydrogen refueling station executes the first detection strategy;

[0066] Among them, the second online detection threshold is greater than the first online detection threshold, the detection intensity of the first detection strategy is higher than that of the second detection strategy, and the detection intensity of the second detection strategy is higher than that of the third detection strategy. The detection strategy specifically includes: the number of detection points and the detection interval duration. Generally, the higher the detection intensity, the shorter the detection interval duration and the more the number of detection points.

[0067] In the second aspect, an electronic device, the electronic device includes:

[0068] A memory storing a computer program;

[0069] A processor, communicatively connected to the memory, which implements the on-line hydrogen detection method when the computer program is executed by the processor.

[0070] In a third aspect, a computer-readable storage medium stores a computer program thereon, characterized in that the method for on-line hydrogen detection is implemented when the program is executed by a processor.

[0071] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0072] 1. Based on the use of the hydrogen to be detected, the purity index of the hydrogen to be detected is obtained. First, a preliminary purity detection is performed on the hydrogen to be detected before transportation to obtain the purity detection result of the hydrogen to be detected before transportation. Secondly, a secondary purity detection is performed on the hydrogen to be detected before transportation to obtain the detection result of the secondary purity detection, realizing the quality detection of hydrogen before transportation; at the same time, a purity detection is performed on the hydrogen to be detected after transportation to obtain the purity detection result of the hydrogen to be detected after transportation, and an intelligent comparison is made on the purity of the hydrogen to be detected before and after transportation to obtain the purity change of the hydrogen to be detected before and after transportation. The present invention detects the quality of hydrogen before and after transportation, avoiding abnormal hydrogen quality caused by transportation factors.

[0073] 2. The present invention analyzes the data of the hydrogen refueling station based on historical refueling data and historical detection data, analyzes the daily abnormal rate and on-line detection abnormal rate of the hydrogen refueling station, then calculates the on-line detection value of the hydrogen refueling station in combination with the daily abnormal rate and on-line detection abnormal rate, determines the detection strategy of the hydrogen refueling station based on the on-line detection value, and performs on-line detection on the hydrogen refueling station through the detection strategy. The present invention combines the historical hydrogen refueling data and historical detection data of the hydrogen refueling station, and intelligently sets the on-line hydrogen detection criteria in the hydrogen refueling station, improving the accuracy of on-line hydrogen detection. Description of the Drawings

[0074] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0075] Figure 1 It is the flowchart of the method corresponding to the first embodiment in the present invention;

[0076] Figure 2 It is the flowchart of the sub-steps corresponding to step S3 in the present invention;

[0077] Figure 3 It is the flowchart of the method corresponding to the second embodiment in the present invention;

[0078] Figure 4 It is the structural schematic diagram of the electronic device in the present invention. Detailed Embodiments

[0079] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0080] Embodiment 1. Please refer to Figure 1 and Figure 2 As shown, the technical solution provided by the present invention is: an on-line hydrogen detection method for quality detection of hydrogen quality in a hydrogen refueling station. The method includes:

[0081] Step S1: Based on the use of the hydrogen to be detected, obtain the purity index of the hydrogen to be detected;

[0082] Specifically, when the use is hydrogen for fuel cells, the purity index of the hydrogen to be detected is ≥99.97%. When the use is industrial hydrogen, the purity requirement is relatively low, but the impurity content still needs to be controlled. When it is hydrogen for laboratory use, according to the experimental requirements, the purity index of the hydrogen to be detected is ≥99.999%.

[0083] Step S2: Conduct a preliminary purity test on the hydrogen to be detected before transportation to obtain the purity test result of the hydrogen to be detected before transportation;

[0084] In this embodiment, step S2 includes the following sub-steps:

[0085] Step S21: Before sampling, rinse the sampling container with the hydrogen to be detected several times so that the sampling container collects a fixed volume of the hydrogen to be detected in a clean state as multiple groups of hydrogen samples;

[0086] Specifically, there are multiple groups of hydrogen samples, and the volume of each group of hydrogen samples is equal. The sampling container can actually be a stainless steel gas cylinder or a gas bag;

[0087] Step S22: Number the hydrogen samples and inject the hydrogen samples into the gas chromatograph in the detection order from small to large according to the number;

[0088] Actually, half of the hydrogen samples can be subjected to a preliminary purity test, and the remaining hydrogen samples can be subjected to subsequent purity tests;

[0089] Step S23: Separate hydrogen and impurity gases through a chromatographic column, and then use a detection device to detect multiple groups of hydrogen samples;

[0090] Among them, the impurity gases are oxygen, nitrogen, carbon monoxide, carbon dioxide, etc. The detection device can actually be a thermal conductivity detector or a flame ionization detector;

[0091] Step S24, calculate the real-time hydrogen purity and impurity gas content of multiple groups of hydrogen samples based on the peak area;

[0092] Step S25, if the real-time hydrogen purity of multiple groups of hydrogen samples is greater than or equal to the purity index, proceed to the next step;

[0093] Step S26, if the real-time hydrogen purity of any one group of hydrogen samples is less than the purity index, generate a quality inspection unqualified signal.

[0094] Step S3, conduct a secondary purity test on the hydrogen to be tested before transportation to obtain the test result of the secondary purity test;

[0095] Actually, a dew point meter can be used to conduct a secondary purity test on the hydrogen sample;

[0096] In this embodiment, the step S3 includes the following sub-steps:

[0097] Step S31, introduce the remaining hydrogen samples into the dew point meter in the ascending order of the serial numbers for testing;

[0098] Step S32, then measure the dew point temperature of multiple groups of hydrogen samples in the dew point meter;

[0099] Step S33, calculate the real-time moisture content of multiple groups of hydrogen samples based on the dew point temperature;

[0100] It should be specifically noted that the dew point temperature is the temperature at which the air is cooled to saturation under the condition that the water vapor content in the air remains unchanged and the air pressure is constant;

[0101] Step S34, if the real-time moisture content of the hydrogen samples is less than or equal to the moisture content index, generate a quality inspection qualified signal;

[0102] Step S35, if the real-time moisture content of any one group of hydrogen samples is greater than the moisture content index, generate a quality inspection unqualified signal.

[0103] Step S4, conduct a purity test on the hydrogen to be tested after transportation to obtain the purity test result of the hydrogen to be tested after transportation;

[0104] In this embodiment, the step S4 includes the following sub-steps:

[0105] Step S41, conduct a preliminary purity test on the hydrogen to be tested after transportation according to steps S21 to S26 to obtain the real-time hydrogen purity of the hydrogen samples corresponding to the hydrogen to be tested after transportation;

[0106] Step S42, if the real-time hydrogen purity of all hydrogen samples corresponding to the hydrogen to be tested after transportation is greater than or equal to the purity index, proceed to the next step;

[0107] If the real-time hydrogen purity of any one group of hydrogen samples corresponding to the hydrogen to be detected after transportation is less than the purity index, a quality inspection unqualified signal is generated;

[0108] Step S43, perform secondary purity detection on the hydrogen to be detected after transportation according to steps S31 to S35 to obtain the real-time moisture content of the hydrogen samples corresponding to the hydrogen to be detected after transportation;

[0109] Step S44, if the real-time moisture content of all hydrogen samples corresponding to the hydrogen to be detected after transportation is less than or equal to the moisture content index, proceed to the next step;

[0110] If the real-time moisture content of any one group of hydrogen samples corresponding to the hydrogen to be detected after transportation is greater than the moisture content index, a quality inspection unqualified signal is generated.

[0111] Step S5, perform intelligent comparison on the purity of the hydrogen to be detected before and after transportation to obtain the purity change of the hydrogen to be detected before and after transportation;

[0112] In this embodiment, step S5 includes the following sub-steps:

[0113] Step S51, obtain the real-time hydrogen purity of multiple groups of hydrogen samples before transportation, add up the real-time hydrogen purities of the multiple groups of hydrogen samples and take the average to obtain the first hydrogen purity average of the hydrogen samples before transportation;

[0114] Similarly, obtain the real-time hydrogen purity of the hydrogen samples corresponding to the hydrogen to be detected after transportation, add up the real-time hydrogen purities of the multiple groups of hydrogen samples and take the average to obtain the second hydrogen purity average of the hydrogen samples after transportation;

[0115] Step S52, compare the first hydrogen purity average with the second hydrogen purity average;

[0116] If the second hydrogen purity is greater than or equal to the first hydrogen purity average, no operation is performed;

[0117] If the second hydrogen purity is less than the first hydrogen purity average, subtract the second hydrogen purity from the first hydrogen purity average to obtain the purity change value of the hydrogen samples corresponding to the hydrogen to be detected after transportation;

[0118] Step S53, if the purity change value is greater than or equal to the purity change threshold, generate a purity anomaly signal;

[0119] If the purity change value is less than the purity change threshold, proceed to the next step;

[0120] Step S54, similarly, obtain the real-time moisture content of multiple groups of hydrogen samples before transportation, add up the real-time moisture contents of the multiple groups of hydrogen samples and take the average to obtain the first moisture content average of the hydrogen samples before transportation;

[0121] Similarly, obtain the real-time moisture content of the hydrogen samples corresponding to the hydrogen to be detected after transportation. Add up the real-time moisture contents of multiple groups of hydrogen samples and take the average to obtain the second average moisture content of the hydrogen samples after transportation.

[0122] Step S55: Compare the first average moisture content with the second average moisture content.

[0123] If the second average moisture content is less than or equal to the first average moisture content, do nothing.

[0124] If the second average moisture content is greater than the first average moisture content, subtract the first average moisture content from the second average moisture content to obtain the moisture change value of the hydrogen samples corresponding to the hydrogen to be detected after transportation.

[0125] Step S56: If the moisture change value is greater than or equal to the moisture change threshold, generate a purity anomaly signal.

[0126] If the moisture change value is less than the moisture change threshold, generate a purity normal signal.

[0127] In this embodiment, due to the adoption of the above technical solution, based on the use of the hydrogen to be detected, the purity index of the hydrogen to be detected is obtained. First, a preliminary purity detection is performed on the hydrogen to be detected before transportation to obtain the purity detection result of the hydrogen to be detected before transportation. Secondly, a secondary purity detection is performed on the hydrogen to be detected before transportation to obtain the detection result of the secondary purity detection, which can realize the quality detection of hydrogen before transportation.

[0128] At the same time, this embodiment also performs a purity detection on the hydrogen to be detected after transportation to obtain the purity detection result of the hydrogen to be detected after transportation, and intelligently compares the purity situations of the hydrogen to be detected before and after transportation to obtain the purity change situation of the hydrogen to be detected before and after transportation. The present invention detects the quality of hydrogen before and after transportation to avoid abnormal hydrogen quality caused by transportation factors.

[0129] Embodiment 2, as another embodiment of the present invention, please refer to FIG. 3. A hydrogen on-line detection method is used to perform real-time on-line detection on hydrogen after arriving at a hydrogen refueling station. The method further includes:

[0130] Step S6: Obtain the historical refueling data and historical detection data of the hydrogen refueling station, and perform data analysis on the hydrogen refueling station based on the historical refueling data and historical detection data.

[0131] Specifically, the historical refueling data is the daily hydrogen storage volume of the hydrogen refueling station in the previous month, the daily refueling times of the hydrogen refueling station in the previous month, and the hydrogen refueling volume each time. The daily hydrogen refueling volume is measured at a fixed time point every day. For example, it can be measured after the hydrogen refueling station is closed on the same day, and the measurement time can be 23:00. The historical detection data is the historical online detection times and the historical online detection abnormal times of the hydrogen refueling station. The online detection abnormality here refers to the abnormal hydrogen quality in the hydrogen refueling station;

[0132] In this embodiment, the step S6 includes the following sub-steps:

[0133] Step S61, obtain the daily refueling times of the hydrogen refueling station in the previous month and the hydrogen refueling volume each time, and sum up the hydrogen refueling volumes each time to obtain the daily hydrogen refueling volume of the hydrogen refueling station;

[0134] Step S62, then obtain the daily hydrogen storage volume of the hydrogen refueling station every day in the previous month, and subtract the daily hydrogen storage volume of the current day from the daily hydrogen storage volume of the previous day to obtain the daily hydrogen consumption of the hydrogen refueling station;

[0135] Step S63, based on time, obtain the daily hydrogen consumption and the daily hydrogen refueling volume of the hydrogen refueling station on the same day;

[0136] If the daily hydrogen consumption is equal to the daily hydrogen refueling volume, no operation is performed. If the daily hydrogen consumption is not equal to the daily hydrogen refueling volume, proceed to the next step;

[0137] Step S64, if the daily hydrogen consumption is less than the daily hydrogen refueling volume, generate an abnormal alarm signal;

[0138] If the daily hydrogen consumption is greater than the daily hydrogen refueling volume, subtract the daily hydrogen refueling volume from the daily hydrogen consumption to obtain the daily hydrogen deviation volume of the hydrogen refueling station. If the daily hydrogen deviation volume is less than or equal to the normal hydrogen loss volume, no operation is performed. If the daily hydrogen deviation volume is greater than the normal hydrogen loss volume, mark the current day of this month as an abnormal day;

[0139] Step S65, count the number of abnormal days and compare it with the number of days in the current month to obtain the days abnormality rate of the hydrogen refueling station;

[0140] Step S66, obtain the historical online detection times and the historical online detection abnormal times of the hydrogen refueling station, and compare the historical online detection abnormal times with the historical online detection times to obtain the online detection abnormality rate of the hydrogen refueling station.

[0141] Step S7, calculate the online detection value of the hydrogen refueling station by combining the days abnormality rate and the online detection abnormality rate, determine the detection strategy of the hydrogen refueling station based on the online detection value, and conduct online detection on the hydrogen refueling station;

[0142] In this embodiment, the step S7 includes the following sub-steps:

[0143] Step S71: Obtain the daily anomaly rate and on-line detection anomaly rate of the hydrogen refueling station calculated above;

[0144] Step S72: Substitute the daily anomaly rate and on-line detection anomaly rate into the formula for numerical calculation to obtain the on-line detection value of the hydrogen refueling station. The specific formula is:

[0145] On-line detection value = daily anomaly rate × first weight coefficient + on-line detection anomaly rate × second weight coefficient, where the first weight coefficient is greater than the second weight coefficient;

[0146] Actually, the first weight coefficient can be 0.6 and the second weight coefficient can be 0.4;

[0147] Step S73: If the on-line detection value is less than the first on-line detection threshold, the hydrogen refueling station implements the third detection strategy;

[0148] If the on-line detection value is greater than or equal to the first on-line detection threshold and less than the second on-line detection threshold, the hydrogen refueling station implements the second detection strategy;

[0149] If the on-line detection value is greater than or equal to the second on-line detection threshold, the hydrogen refueling station implements the first detection strategy;

[0150] Among them, the second on-line detection threshold is greater than the first on-line detection threshold. The detection intensity of the first detection strategy is higher than that of the second detection strategy, and the detection intensity of the second detection strategy is higher than that of the third detection strategy. The detection strategy specifically includes: the number of detection points and the detection interval duration. Generally, the higher the detection intensity, the shorter the detection interval duration and the more the number of detection points.

[0151] Embodiment 3, such as Figure 4As shown in the figure, this embodiment provides an electronic device, which may include: a processor, a communications interface, a memory, and a communication bus. Among them, the processor, the communication interface, and the memory complete communication with each other through the communication bus. The processor can call the logical instructions in the memory to execute a method for on-line hydrogen detection. The method includes: obtaining the purity index of the hydrogen to be detected based on the use of the hydrogen to be detected; performing a preliminary purity detection on the hydrogen to be detected before transportation to obtain the purity detection result of the hydrogen to be detected before transportation; performing a secondary purity detection on the hydrogen to be detected before transportation to obtain the detection result of the secondary purity detection; performing a purity detection on the hydrogen to be detected after transportation to obtain the purity detection result of the hydrogen to be detected after transportation; performing an intelligent comparison on the purity of the hydrogen to be detected before and after transportation to obtain the purity change of the hydrogen to be detected before and after transportation; obtaining the historical filling data and historical detection data of the hydrogen filling station, and performing data analysis on the hydrogen filling station based on the historical filling data and historical detection data; calculating the on-line detection value of the hydrogen filling station by combining the daily anomaly rate and the on-line detection anomaly rate, determining the detection strategy of the hydrogen filling station based on the on-line detection value, and performing on-line detection on the hydrogen filling station.

[0152] In addition, when the logical instructions in the above-mentioned memory are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0153] Embodiment 4. The present application further provides a computer program product. The computer program product includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute a hydrogen gas on-line detection method provided by each of the above methods. The method includes: obtaining a purity index of the hydrogen gas to be detected based on the use of the hydrogen gas to be detected; performing a preliminary purity detection on the hydrogen gas to be detected before transportation to obtain a purity detection result of the hydrogen gas to be detected before transportation; performing a secondary purity detection on the hydrogen gas to be detected before transportation to obtain a detection result of the secondary purity detection; performing a purity detection on the hydrogen gas to be detected after transportation to obtain a purity detection result of the hydrogen gas to be detected after transportation; performing an intelligent comparison on the purity conditions of the hydrogen gas to be detected before and after transportation to obtain the purity change condition of the hydrogen gas to be detected before and after transportation; obtaining the historical filling data and historical detection data of the hydrogen refueling station, and performing data analysis on the hydrogen refueling station based on the historical filling data and historical detection data; calculating the on-line detection value of the hydrogen refueling station by combining the daily anomaly rate and the on-line detection anomaly rate, determining the detection strategy of the hydrogen refueling station based on the on-line detection value, and performing on-line detection on the hydrogen refueling station.

[0154] Embodiment 5. The present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is configured to execute a hydrogen gas on-line detection method provided by each of the above. The method includes: obtaining a purity index of the hydrogen gas to be detected based on the use of the hydrogen gas to be detected; performing a preliminary purity detection on the hydrogen gas to be detected before transportation to obtain a purity detection result of the hydrogen gas to be detected before transportation; performing a secondary purity detection on the hydrogen gas to be detected before transportation to obtain a detection result of the secondary purity detection; performing a purity detection on the hydrogen gas to be detected after transportation to obtain a purity detection result of the hydrogen gas to be detected after transportation; performing an intelligent comparison on the purity conditions of the hydrogen gas to be detected before and after transportation to obtain the purity change condition of the hydrogen gas to be detected before and after transportation; obtaining the historical filling data and historical detection data of the hydrogen refueling station, and performing data analysis on the hydrogen refueling station based on the historical filling data and historical detection data; calculating the on-line detection value of the hydrogen refueling station by combining the daily anomaly rate and the on-line detection anomaly rate, determining the detection strategy of the hydrogen refueling station based on the on-line detection value, and performing on-line detection on the hydrogen refueling station.

[0155] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement without creative labor.

[0156] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the essence of the above technical solution, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0157] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An on-line hydrogen detection method, characterized in that, The method includes: Step S1: Obtain the purity index of the hydrogen to be detected based on the use of the hydrogen to be detected. Step S2: Conduct a preliminary purity test on the hydrogen to be detected before transportation to obtain the purity test result of the hydrogen to be detected before transportation. Step S3: Conduct a secondary purity test on the hydrogen to be detected before transportation to obtain the test result of the secondary purity test. Step S4: Conduct a purity test on the hydrogen to be detected after transportation to obtain the purity test result of the hydrogen to be detected after transportation. Step S5: Intelligently compare the purity of the hydrogen to be detected before and after transportation to obtain the purity change of the hydrogen to be detected before and after transportation.

2. The on-line hydrogen detection method according to claim 1, characterized in that, The said Step S2 includes the following sub-steps: Step S21: Before sampling, rinse the sampling container with the hydrogen to be detected several times so that the sampling container collects a fixed volume of the hydrogen to be detected in a clean state as multiple groups of hydrogen samples. Step S22: Number the hydrogen samples and inject the hydrogen samples into the gas chromatograph in the detection order from small to large according to the numbers. Step S23: Separate hydrogen and impurity gases through the chromatographic column, and then use the detection equipment to detect multiple groups of hydrogen samples. Step S24: Calculate the real-time hydrogen purity and impurity gas content of multiple groups of hydrogen samples based on the peak area. Step S25: If the real-time hydrogen purity of multiple groups of hydrogen samples is greater than or equal to the purity index, proceed to the next step. Step S26: If the real-time hydrogen purity of any one group of hydrogen samples is less than the purity index, generate a quality inspection unqualified signal.

3. The hydrogen gas on-line detection method according to claim 2, characterized in that, The said Step S3 includes the following sub-steps: Step S31: Pass the remaining hydrogen samples into the dew point meter in the detection order from small to large according to the numbers. Step S32: Then measure the dew point temperature of multiple groups of hydrogen samples in the dew point meter. Step S33: Calculate the real-time moisture content of multiple groups of hydrogen samples based on the dew point temperature. Step S34: If the real-time moisture content of the hydrogen samples is less than or equal to the moisture content index, generate a quality inspection qualified signal. Step S35: If the real-time moisture content of any one group of hydrogen samples is greater than the moisture content index, generate a quality inspection unqualified signal.

4. The on-line hydrogen detection method according to claim 3, characterized in that, The said Step S4 includes the following sub-steps: Step S41: Conduct a preliminary purity test on the hydrogen to be detected after transportation according to Steps S21 to S26 to obtain the real-time hydrogen purity of the hydrogen samples corresponding to the hydrogen to be detected after transportation. Step S42: If the real-time hydrogen purity of all hydrogen samples corresponding to the hydrogen to be detected after transportation is greater than or equal to the purity index, proceed to the next step. If the real-time hydrogen purity of any one group of hydrogen samples corresponding to the hydrogen to be detected after transportation is less than the purity index, generate a quality inspection unqualified signal. Step S43: Conduct a secondary purity test on the hydrogen to be detected after transportation according to Steps S31 to S35 to obtain the real-time moisture content of the hydrogen samples corresponding to the hydrogen to be detected after transportation. Step S44: If the real-time moisture content of all hydrogen samples corresponding to the hydrogen to be detected after transportation is less than or equal to the moisture content index, proceed to the next step. If the real-time moisture content of any one group of hydrogen samples corresponding to the hydrogen to be detected after transportation is greater than the moisture content index, generate a quality inspection unqualified signal.

5. The on-line hydrogen detection method according to claim 4, wherein The said Step S5 includes the following sub-steps: Step S51: Obtain the real-time hydrogen purity of multiple groups of hydrogen samples before transportation, add up the real-time hydrogen purities of the multiple groups of hydrogen samples, sum them up, and take the average to obtain the first hydrogen purity average of the hydrogen samples before transportation; Similarly, obtain the real-time hydrogen purity of the hydrogen samples corresponding to the hydrogen to be detected after transportation, add up the real-time hydrogen purities of the multiple groups of hydrogen samples, sum them up, and take the average to obtain the second hydrogen purity average of the hydrogen samples after transportation; Step S52: Compare the first hydrogen purity average with the second hydrogen purity average; If the second hydrogen purity is greater than or equal to the first hydrogen purity average, do nothing; If the second hydrogen purity is less than the first hydrogen purity average, subtract the second hydrogen purity from the first hydrogen purity average to obtain the purity change value of the hydrogen samples corresponding to the hydrogen to be detected after transportation; Step S53: If the purity change value is greater than or equal to the purity change threshold, generate a purity anomaly signal; If the purity change value is less than the purity change threshold, proceed to the next step; Step S54: Similarly, obtain the real-time moisture content of multiple groups of hydrogen samples before transportation, add up the real-time moisture contents of the multiple groups of hydrogen samples, sum them up, and take the average to obtain the first moisture content average of the hydrogen samples before transportation; Similarly, obtain the real-time moisture content of the hydrogen samples corresponding to the hydrogen to be detected after transportation, add up the real-time moisture contents of the multiple groups of hydrogen samples, sum them up, and take the average to obtain the second moisture content average of the hydrogen samples after transportation; Step S55: Compare the first moisture content average with the second moisture content average; If the second moisture content average is less than or equal to the first moisture content average, do nothing; If the second moisture content average is greater than the first moisture content average, subtract the first moisture content from the second moisture content average to obtain the moisture change value of the hydrogen samples corresponding to the hydrogen to be detected after transportation; Step S56: If the moisture change value is greater than or equal to the moisture change threshold, generate a purity anomaly signal; If the moisture change value is less than the moisture change threshold, generate a purity normal signal.

6. The on-line hydrogen detection method according to claim 1, characterized in that, The on-line hydrogen detection method further includes: Step S6: Obtain the historical filling data and historical detection data of the hydrogen filling station, and perform data analysis on the hydrogen filling station based on the historical filling data and historical detection data; wherein, the historical filling data is the daily hydrogen storage volume of the hydrogen filling station every day last month, the daily filling times of the hydrogen filling station last month, and the hydrogen filling volume each time of filling; the historical detection data is the historical on-line detection times and historical on-line detection anomaly times of the hydrogen filling station; Step S7: Calculate the on-line detection value of the hydrogen filling station by combining the days anomaly rate and the on-line detection anomaly rate, and determine the detection strategy of the hydrogen filling station based on the on-line detection value and perform on-line detection on the hydrogen filling station.

7. The on-line hydrogen detection method according to claim 6, characterized in that The said Step S6 includes the following sub-steps: Step S61: Obtain the daily filling times of the hydrogen filling station last month and the hydrogen filling volume each time of filling, add up the hydrogen filling volumes each time of filling to obtain the daily hydrogen filling volume of the hydrogen filling station; Step S62: Then obtain the daily hydrogen storage volume of the hydrogen filling station every day last month, and subtract the daily hydrogen storage volume of the current day from the daily hydrogen storage volume of the previous day to obtain the daily hydrogen consumption of the hydrogen filling station; Step S63: Based on time, obtain the daily hydrogen consumption and daily hydrogen refueling volume of the hydrogen refueling station on the same day; If the daily hydrogen consumption is equal to the daily hydrogen refueling volume, no operation is performed. If the daily hydrogen consumption is not equal to the daily hydrogen refueling volume, proceed to the next step; Step S64: If the daily hydrogen consumption is less than the daily hydrogen refueling volume, generate an abnormal alarm signal; If the daily hydrogen consumption is greater than the daily hydrogen refueling volume, subtract the daily hydrogen refueling volume from the daily hydrogen consumption to obtain the daily hydrogen deviation volume of the hydrogen refueling station. If the daily hydrogen deviation volume is less than or equal to the normal hydrogen loss volume, no operation is performed. If the daily hydrogen deviation volume is greater than the normal hydrogen loss volume, mark the day of that month as an abnormal day; Step S65: Count the number of abnormal days and compare it with the number of days in that month to obtain the abnormal day rate of the hydrogen refueling station; Step S66: Obtain the historical online detection times and historical online detection abnormal times of the hydrogen refueling station. Compare the historical online detection abnormal times with the historical online detection times to obtain the online detection abnormal rate of the hydrogen refueling station.

8. A method for on-line hydrogen detection according to claim 7, characterized in that, The said Step S7 includes the following sub-steps: Step S71: Obtain the abnormal day rate and online detection abnormal rate of the hydrogen refueling station; Step S72: Calculate the online detection value of the hydrogen refueling station; Step S73: If the online detection value is less than the first online detection threshold, the hydrogen refueling station executes the third detection strategy; If the online detection value is greater than or equal to the first online detection threshold and less than the second online detection threshold, the hydrogen refueling station executes the second detection strategy; If the online detection value is greater than or equal to the second online detection threshold, the hydrogen refueling station executes the first detection strategy; Among them, the second online detection threshold is greater than the first online detection threshold. The detection intensity of the first detection strategy is higher than that of the second detection strategy, and the detection intensity of the second detection strategy is higher than that of the third detection strategy. The detection strategy specifically includes: the number of detection points and the detection interval duration. Generally, the higher the detection intensity, the shorter the detection interval duration and the more the number of detection points.

9. An electronic device, characterized in that, The said electronic device includes: A memory storing a computer program; A processor communicatively connected to the memory. When the computer program is executed by the processor, the hydrogen online detection method described in any one of claims 1 - 8 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, the hydrogen online detection method described in any one of claims 1 to 8 is implemented.

Images