Gas Leakage Alarm Safety Analysis Method

Abstract

The present invention relates to the technical field of gas leakage safety analysis, and specifically to a gas leakage alarm safety analysis method, which first obtains the gas hazard index and its corresponding hazard index sequence based on the real-time input flow, real-time output flow and flame heat of the collected gas; obtains the degree of approximation between the hazard index sequences of different gas pressures, and groups different gas pressures to obtain multiple clusters; calculates the fluctuation mean of each flame heat sequence of each cluster; obtains the total maximum heat in the flame heat sequence of each cluster and the hazard mean of the hazard index sequence; obtains the alarm index from the total maximum heat, the fluctuation mean and the hazard mean; and issues an early warning based on the alarm index. The present invention obtains the alarm index by analyzing the degree of danger of the gas, and issues an early warning based on the alarm index, thereby achieving the purpose of issuing an early warning before the gas leaks and spreads to a large extent through the gas flow and flame conditions, thereby avoiding the occurrence of dangerous accidents.

Description

Technical Field

[0001] The invention relates to the technical field of gas leakage safety analysis, and in particular to a gas leakage alarm safety analysis method. Background Art

[0002] When using gas, you may smell the smell of gas. This is usually caused by two reasons. The first is some slight gas leakage or incomplete combustion during the switching process or when the air is flowing. This happens frequently and is not easy to avoid, but the harm to the human body is minimal. The second is caused by pipeline leakage or incomplete combustion of gas. A large amount of gas leakage will increase the amount of harmful gases in the air, which is very harmful to the human body. Therefore, it is necessary to alarm and conduct safety analysis on gas leakage.

[0003] At present, the common alarm method for safety hazards such as gas leaks often only collects gas concentration or temperature. The accuracy of judging whether a dangerous accident has occurred is low, and it is impossible to warn of gas leaks in the early stages of the leak. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a gas leak alarm safety analysis method, and the technical solution adopted is as follows:

[0005] Collect the real-time input flow, real-time output flow and flame heat of the gas, and build a flame heat sequence;

[0006] Under the same gas pressure, a first leakage degree of the gas is obtained according to the difference between the real-time input flow rate and the real-time output flow rate; a second leakage degree is obtained according to the difference between the flame heats in the flame heat sequence; the product of the first leakage degree and the second leakage degree is a hazard index, and each gas pressure corresponds to a hazard index sequence;

[0007] Obtain the approximation between the hazard index sequences corresponding to different gas pressures, and group the different gas pressures according to the approximation to obtain multiple clusters; obtain the fluctuation value of each flame heat sequence corresponding to each cluster, and calculate the fluctuation mean of multiple fluctuation values ​​corresponding to the cluster; obtain the total maximum heat in the multiple flame heat sequences corresponding to each cluster and the hazard mean of multiple hazard index sequences; the product of the total maximum heat, the fluctuation mean and the hazard mean is the alarm indicator of gas leakage;

[0008] An early warning is issued according to the alarm indicator.

[0009] Preferably, obtaining the first leakage degree of the gas according to the difference between the real-time input flow rate and the real-time output flow rate includes:

[0010] A ratio of the real-time input flow rate to the real-time output flow rate is the first leakage degree of the gas.

[0011] Preferably, obtaining the second leakage degree according to the difference between the flame heats in the flame heat sequence comprises:

[0012] A second leakage degree is obtained according to a ratio of the real-time flame heat and the standard flame heat in the flame heat sequence.

[0013] Preferably, the obtaining of the approximation between the hazard indicator sequences corresponding to different gas pressures includes:

[0014] For any two different gas pressures, obtaining the cosine similarity of the hazard indicator sequence corresponding to the any two different gas pressures; calculating the difference of the vector modulus of the hazard indicator sequence corresponding to the any two different gas pressures;

[0015] The ratio of the cosine similarity to the difference between the vector modulus is the degree of similarity between the hazard indicator sequences.

[0016] Preferably, the grouping of different gas pressures according to the approximation degree to obtain a plurality of clusters includes:

[0017] The reciprocal of the degree of similarity between any two gas pressures is the difference distance between the any two gas pressures;

[0018] Based on the difference distance, the different gas pressures are grouped using the K-Means clustering algorithm.

[0019] Preferably, the fluctuation value of each flame heat sequence is: the variance of the flame heat sequence is the fluctuation value.

[0020] Preferably, the method for acquiring the real-time output flow is: using a gas flow meter to collect the real-time input flow and real-time output flow of the gas.

[0021] Preferably, the method for acquiring the flame heat is: using a thermal imager to collect the flame heat of the gas.

[0022] Preferably, the early warning according to the alarm indicator includes:

[0023] According to the size of the alarm indicator, the corresponding clusters are divided into a severe hazard cluster, a slight hazard cluster and a no hazard cluster;

[0024] The warning lights corresponding to the gas pressures in the severe hazard cluster are red; the warning lights corresponding to the gas pressures in the minor hazard cluster are yellow; and the warning lights corresponding to the gas pressures in the non-hazard cluster are green.

[0025] The embodiments of the present invention have at least the following beneficial effects:

[0026] The embodiment of the present invention relates to a gas leakage safety analysis technology, which collects real-time input flow, real-time output flow and flame heat of gas, and constructs a flame heat sequence; under the same gas pressure, a first leakage degree of gas is obtained according to the difference between the real-time input flow and the real-time output flow; a second leakage degree is obtained according to the difference between the flame heats in the flame heat sequence; the product of the first leakage degree and the second leakage degree is a hazard index, and the hazard index of the gas is determined by the real-time flow of gas and the flame condition at the same time, which has a higher accuracy rate than obtaining the hazard index of the gas by only using one of the influencing factors; the approximation between the hazard index sequences corresponding to different gas pressures is obtained, and different gas pressures are grouped according to the approximation to obtain multiple clusters, and subsequent analysis is performed on each cluster to simplify subsequent calculations; the fluctuation value of each flame heat sequence corresponding to each cluster is obtained, and the fluctuation mean of multiple fluctuation values ​​corresponding to the cluster is calculated; the total maximum heat in multiple flame heat sequences corresponding to each cluster and the hazard mean of multiple hazard index sequences are obtained; the product of the total maximum heat, the fluctuation mean and the hazard mean is the alarm index of gas leakage; and different degrees of early warning are performed according to the alarm index. The present invention evaluates the danger level of the gas by the real-time input flow rate, real-time output flow rate, flame heat and the fluctuation value of the flame heat, and obtains the alarm index. Different degrees of early warning are carried out according to the alarm index, so as to achieve the goal of issuing an early warning before the gas leaks and spreads to a large extent through the gas flow rate and flame conditions, thereby avoiding the occurrence of dangerous accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A method flow chart of a gas leak alarm safety analysis method provided by one embodiment of the present invention.

[0029] Figure 2 A flowchart of the steps for obtaining the alarm indicator of each cluster provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the gas leak alarm safety analysis method proposed by the present invention, its specific implementation method, structure, features and effects, in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0031] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0032] The embodiment of the present invention provides a specific implementation method of a gas leak alarm safety analysis method, which is applicable to gas leak alarm safety analysis scenarios. A gas pressure gauge is installed at the gas valve to view the gas pressure information; a thermal imager is installed at a position where the gas flame can be collected; and an indicator light is provided on the side of the gas control switch for safety warning. In order to solve the problem of being unable to detect gas leaks in real time and to warn of gas leaks in the early stages of gas leaks, the embodiment of the present invention evaluates the degree of danger of the gas by evaluating the real-time input flow rate, real-time output flow rate, flame heat and the fluctuation value of the flame heat of the gas, obtains an alarm index, and issues different degrees of warning according to the alarm index, thereby achieving the goal of issuing a warning before the gas leaks and spreads to a large extent through the gas flow rate and flame conditions, thereby avoiding the occurrence of dangerous accidents.

[0033] The specific scheme of the gas leak alarm safety analysis method provided by the present invention is described in detail below with reference to the accompanying drawings.

[0034] See also Figure 1 , which shows a flow chart of the steps of a gas leak alarm safety analysis method provided by an embodiment of the present invention, the method comprising the following steps:

[0035] Step S100, collecting the real-time input flow, real-time output flow and flame heat of the gas, and constructing a flame heat sequence.

[0036] Based on actual gas usage, the size of the flame can be adjusted according to different usage conditions. The size of the flame is related to the tightness of the gas valve. The wider the gas valve is opened, the greater the gas pressure is, and the larger the flame is; conversely, the smaller the gas valve is, the corresponding gas pressure is smaller, and the flame is smaller.

[0037] A gas pressure gauge is installed at the gas valve, which can be used to check the gas pressure information and obtain the gas pressure at different times.

[0038] When there is no leakage in the gas pipeline, the real-time input flow and real-time output flow of the gas pipeline should be equal. If there is a gas leak, there will be a difference between the input flow and the output flow.

[0039] When using gas, that is, when the flame is burning, the change in the flame heat can also reflect the degree of gas leakage. When the gas pressure is stable but the flame heat fluctuates, the gas may have leaked.

[0040] The real-time input flow and output flow of the gas pipeline are collected using a gas flow meter. The flame heat is collected using a thermal imaging detector. Specifically: a thermal imaging detector is used to collect a thermal map containing the flame area, and the area of ​​the red area in the thermal map is further obtained using threshold segmentation, and the area is used as the flame heat.

[0041] Step S200, under the same gas pressure, the first leakage degree of the gas is obtained according to the difference between the real-time input flow rate and the real-time output flow rate; the second leakage degree is obtained according to the difference between the flame temperatures in the flame heat sequence; the product of the first leakage degree and the second leakage degree is the hazard index, and each gas pressure corresponds to a hazard index sequence.

[0042] Under the same gas pressure, the real-time input flow and real-time output flow of the gas pipeline collected by the gas flow meter are analyzed to obtain the first leakage degree of the gas. Specifically: the ratio of the real-time input flow and the real-time output flow is the first leakage degree of the gas.

[0043] The value range of the first leakage degree is [0,1]. When the first leakage degree is closer to 1, the difference between the real-time input flow rate and the real-time output flow rate of the gas is smaller. On the contrary, when the first leakage degree is lower and closer to 0, the difference between the real-time input flow rate and the real-time output flow rate of the gas is larger, and the probability of gas pipeline leakage is higher. Each pair of real-time input flow rate and real-time output flow rate corresponds to a first leakage degree.

[0044] Furthermore, the flame heat collected by the thermal imaging detector and its corresponding flame heat sequence are analyzed, and the second leakage degree is obtained according to the difference between the flame heats in the flame heat sequence. Specifically: the standard flame heat when there is no gas leakage under the current gas pressure is collected. The second leakage degree is obtained according to the ratio of the real-time flame heat to the standard flame heat in the flame heat sequence. The second leakage degree is a power function with a natural constant as the base and the negative value of the ratio of the real-time flame heat to the standard flame heat as the exponent. Among them, each real-time flame heat corresponds to a second leakage degree.

[0045] There is a negative correlation between flame heat and the second leakage degree. The greater the flame heat, the lower the leakage degree; conversely, the smaller the flame heat, the higher the leakage degree, because when a gas pipeline leaks, part of the gas is leaked, which will cause the flame heat when the leak occurs to be less than the flame heat when there is no leakage at the same gas pressure.

[0046] The gas hazard index is calculated based on the first leakage degree obtained by the real-time input flow rate and the real-time output flow rate and the second leakage degree obtained by the flame heat. Specifically, the product of the first leakage degree and the second leakage degree is the gas hazard index. When the real-time input and output flow rates and the flame heat change, the hazard index will also change accordingly.

[0047] Multiple hazard indicators under the same gas pressure constitute a hazard indicator sequence, that is, each gas pressure corresponds to a hazard indicator sequence.

[0048] Step S300, obtaining the degree of similarity between the hazard indicator sequences corresponding to different gas pressures, and grouping the different gas pressures according to the degree of similarity to obtain multiple clusters; obtaining the fluctuation value of each flame heat sequence corresponding to each cluster, and calculating the fluctuation mean of the multiple fluctuation values ​​corresponding to the cluster; obtaining the total maximum heat in the multiple flame heat sequences corresponding to each cluster and the hazard mean of the multiple hazard indicator sequences; the product of the total maximum heat, the fluctuation mean and the hazard mean is the alarm indicator of gas leakage.

[0049] See also Figure 2 , grouping different gas pressures to obtain multiple clusters, and obtaining the alarm index of each cluster, specifically:

[0050] Step S310, obtaining the similarity between the hazard indicator sequences corresponding to different gas pressures, and grouping the different gas pressures according to the similarity to obtain a plurality of clusters.

[0051] Compare the hazard index sequences obtained under different gas pressures to obtain the approximation between the different gas pressures. Obtain the approximation between the hazard index sequences corresponding to different gas pressures, specifically:

[0052] For any two different gas pressures, the cosine similarity of the hazard indicator sequences corresponding to the any two different gas pressures is obtained.

[0053] Calculate the difference between the vector moduli of the hazard index sequences corresponding to any two different gas pressures.

[0054] The ratio of the cosine similarity and the difference between the vector modulus is the degree of similarity between the hazard indicator sequences.

[0055] Gas pressure and gas pressure The approximation degree of the corresponding hazard indicator sequence The calculation formula is:

[0056]

[0057] in, Hazard indicator sequence and hazard indicator sequences The cosine similarity of Hazard indicator sequence The vector norm of Hazard indicator sequence The vector norm of is the vector modulus and vector modulus The absolute value of the difference.

[0058] The value range of the approximation degree is [0,1]. When the difference between the hazard index sequences corresponding to two different gas pressures is greater, the corresponding approximation degree is lower, and the approximation degree is closer to 0; conversely, when the difference between the hazard index sequences corresponding to two different gas pressures is smaller, the corresponding approximation degree is higher, and the approximation degree is closer to 1.

[0059] According to the obtained approximation between the hazard index sequences corresponding to any two different gas pressures, multiple different gas pressures are grouped to obtain multiple clusters. Specifically: the inverse of the approximation between any two gas pressures is the difference distance between the two gas pressures. and gas pressure The difference distance The formula is: ;in, Gas pressure and gas pressure The approximation degree of the corresponding hazard indicator sequence. It should be noted that the value 1 is added to the reciprocal of the approximation degree in order to avoid the situation where the difference distance is too small.

[0060] The greater the difference distance between the two gas pressures, the smaller the similarity between the two gas pressures; the smaller the difference distance between the two gas pressures, the greater the similarity between the corresponding two gas pressures.

[0061] Based on the difference distance, the K-Means clustering algorithm is used to group different gas pressures. In the embodiment of the present invention, the k value is set to 3, that is, the K-Means clustering algorithm is used to divide different gas pressures into 3 groups, and three clusters are obtained.

[0062] Calculate the hazard mean of the hazard indicators in the hazard indicator sequence corresponding to the gas pressure in each cluster.

[0063] The three clusters are defined according to the sizes of the three hazard means corresponding to the three clusters. Specifically: the cluster corresponding to the smallest hazard mean is the third cluster without abnormal conditions, and the smallest hazard mean is close to 0; the cluster corresponding to the largest hazard mean is the first cluster with abnormal conditions, and the abnormal conditions of the first cluster will affect the normal use of gas or cause great harm to the human body; in addition to the clusters corresponding to the smallest and largest hazard means, the remaining cluster is the second cluster with abnormal conditions, but the hazard mean of the abnormal conditions of the second cluster is relatively low, reflecting that the current gas has some abnormalities caused by normal factors, which does not hinder the normal use of gas and is less harmful to the human body.

[0064] Step S320, obtaining the fluctuation value of each flame heat sequence corresponding to each cluster, and calculating the fluctuation mean of multiple fluctuation values ​​corresponding to the cluster.

[0065] The first cluster and the second cluster obtained in step S310 are analyzed to obtain the fluctuation values ​​of the multiple flame heat sequences in the two clusters and the fluctuation means of the multiple fluctuation values ​​corresponding to each cluster. It should be noted that because the third cluster corresponding to the smallest hazard mean has a lower hazard level and is a cluster without abnormal conditions, the subsequent fluctuation mean calculation for the third cluster is no longer performed.

[0066] Obtain the fluctuation mean of the first cluster and the second cluster. Specifically: obtain the variance of each flame heat sequence in each cluster, which is the fluctuation value of the flame heat sequence. The smaller the fluctuation value, the more stable the corresponding flame heat sequence is, and the leakage degree under the gas pressure corresponding to the flame heat sequence has not increased or decreased; the larger the fluctuation value, the more unstable the corresponding flame heat sequence is, and the leakage degree under the gas pressure corresponding to the flame heat sequence has increased.

[0067] Obtain multiple fluctuation values ​​corresponding to each cluster, and calculate the average of the multiple fluctuation values ​​to obtain the fluctuation mean, that is, each cluster corresponds to a fluctuation mean.

[0068] Step S330, obtaining the total maximum heat of multiple flame heat sequences corresponding to each cluster and the hazard mean of multiple hazard index sequences; the product of the total maximum heat, the fluctuation mean and the hazard mean is the alarm indicator of gas leakage.

[0069] Subsequent analysis is performed on the first cluster and the second cluster where abnormal conditions exist.

[0070] Since the abnormality of the first cluster is serious and the leakage is high, the heat of each gas pressure in the cluster is low. In order to prevent greater harm, the maximum flame heat in all flame heat sequences in the first cluster is obtained and recorded as the total maximum heat, and the total maximum heat is used as the weight; and the harm mean corresponding to multiple harm indicator sequences in the first cluster is obtained, that is, the first mean of each harm indicator in each harm indicator sequence is calculated, and then the mean of multiple first means is calculated as the second mean, and the second mean is the harm mean.

[0071] The product of the total maximum heat, the hazard mean and the fluctuation mean corresponding to the first cluster is the alarm indicator of the first cluster.

[0072] The abnormality of the second cluster is relatively light, and the corresponding leakage degree is relatively low, so the heat difference under each gas pressure in the cluster is close, and its heat fluctuation sequence is also relatively similar. The maximum flame heat in all flame heat sequences in the second cluster is obtained and recorded as the total maximum heat, and the total maximum heat is used as the weight; and the hazard mean corresponding to multiple hazard indicator sequences in the second cluster is obtained, that is, the first mean of each hazard indicator in each hazard indicator sequence is calculated, and then the mean of multiple first means is calculated as the second mean, and the second mean is the hazard mean.

[0073] The product of the total maximum heat, the hazard mean and the fluctuation mean corresponding to the second cluster is the alarm indicator of the second cluster.

[0074] That is, the alarm index corresponding to the first cluster and the alarm index corresponding to the second cluster are obtained.

[0075] Step S400: issuing an early warning according to the alarm indicator.

[0076] The flame status of different gas pressures is detected and analyzed, and different degrees of early warning are given by comparing each alarm indicator and hazard mean.

[0077] According to the size of the alarm index, the corresponding clusters are divided into severe hazard clusters, minor hazard clusters and no hazard clusters.

[0078] Different degrees of warning are represented by three colors. The warning lights corresponding to each gas pressure in the severe hazard cluster are red; the warning lights corresponding to each gas pressure in the minor hazard cluster are yellow; and the warning lights corresponding to each gas pressure in the no-hazard cluster are green.

[0079] The cluster corresponding to the largest value among the hazard means corresponding to the alarm indicators of the first cluster, the alarm indicators of the second cluster and the third cluster is regarded as a severe hazard cluster. The abnormality occurring under the gas pressure corresponding to the severe hazard cluster will cause harm to the human body, and the warning light will turn red. At this time, the gas should be turned off, windows should be opened for ventilation in time, and professional maintenance personnel should be notified to inspect the gas stove and gas pipeline under the premise of ensuring the safety of personnel.

[0080] The cluster corresponding to the smallest value among the alarm indicators of the first cluster, the alarm indicators of the second cluster and the hazard means corresponding to the third cluster is regarded as a non-hazardous cluster. There is no abnormality under the gas pressure corresponding to the non-hazardous cluster and no hazard will be caused, so no early warning is issued and the warning light remains green.

[0081] The cluster corresponding to the middle value of the alarm index of the first cluster, the alarm index of the second cluster and the hazard mean corresponding to the third cluster is regarded as a minor hazard cluster. The minor hazard cluster has abnormal conditions, but the abnormal conditions are usually caused by some normal factors and do not hinder the normal use of gas. At this time, the warning light turns yellow.

[0082] In summary, the embodiments of the present invention relate to a gas leakage safety analysis technology, which collects the real-time input flow, real-time output flow and flame heat of the gas, and constructs a flame heat sequence; under the same gas pressure, the first leakage degree of the gas is obtained according to the difference between the real-time input flow and the real-time output flow; the second leakage degree is obtained according to the difference between the flame heats in the flame heat sequence; the product of the first leakage degree and the second leakage degree is a hazard index, and each gas pressure corresponds to a hazard index sequence; the approximation between the hazard index sequences corresponding to different gas pressures is obtained, and different gas pressures are grouped according to the approximation to obtain multiple clusters; the fluctuation value of each flame heat sequence corresponding to each cluster is obtained, and the fluctuation mean of the multiple fluctuation values ​​corresponding to the cluster is calculated; the total maximum heat in the multiple flame heat sequences corresponding to each cluster and the hazard mean of the multiple hazard index sequences are obtained; the product of the total maximum heat, the fluctuation mean and the hazard mean is the alarm index of the gas leakage; and different degrees of early warning are carried out according to the alarm index. The present invention evaluates the danger level of the gas by the real-time input flow rate, real-time output flow rate, flame heat and the fluctuation value of the flame heat, and obtains the alarm index. Different degrees of early warning are carried out according to the alarm index, so as to achieve the goal of issuing an early warning before the gas leaks and spreads to a large extent through the gas flow rate and flame conditions, thereby avoiding the occurrence of dangerous accidents.

[0083] It should be noted that the sequence of the embodiments of the present invention described above is for description only and does not represent the advantages and disadvantages of the embodiments. The above describes specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0084] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas leak alarm safety analysis method, characterized in that: The method comprises the following steps: Collect the real-time input flow, real-time output flow and flame heat of the gas, and build a flame heat sequence; Under the same gas pressure, a first leakage degree of the gas is obtained according to the difference between the real-time input flow rate and the real-time output flow rate; a second leakage degree is obtained according to the difference between the flame heats in the flame heat sequence; the product of the first leakage degree and the second leakage degree is a hazard index, and each gas pressure corresponds to a hazard index sequence; Obtain the approximation between the hazard index sequences corresponding to different gas pressures, and group the different gas pressures according to the approximation to obtain multiple clusters; obtain the fluctuation value of each flame heat sequence corresponding to each cluster, and calculate the fluctuation mean of multiple fluctuation values ​​corresponding to the cluster; obtain the total maximum heat in the multiple flame heat sequences corresponding to each cluster and the hazard mean of multiple hazard index sequences; the product of the total maximum heat, the fluctuation mean and the hazard mean is the alarm indicator of gas leakage; An early warning is issued according to the alarm indicator.

2. The gas leak alarm safety analysis method according to claim 1, characterized in that: The obtaining a first leakage degree of the gas according to the difference between the real-time input flow rate and the real-time output flow rate comprises: A ratio of the real-time input flow rate to the real-time output flow rate is the first leakage degree of the gas.

3. The gas leak alarm safety analysis method according to claim 1, characterized in that: The obtaining a second leakage degree according to the difference between the flame heats in the flame heat sequence comprises: A second leakage degree is obtained according to a ratio of the real-time flame heat and the standard flame heat in the flame heat sequence.

4. The gas leak alarm safety analysis method according to claim 1, characterized in that: The obtaining of the approximation between the hazard indicator sequences corresponding to different gas pressures includes: For any two different gas pressures, obtaining the cosine similarity of the hazard indicator sequence corresponding to the any two different gas pressures; calculating the difference of the vector modulus of the hazard indicator sequence corresponding to the any two different gas pressures; The ratio of the cosine similarity to the difference between the vector modulus is the degree of similarity between the hazard indicator sequences.

5. The gas leak alarm safety analysis method according to claim 1, characterized in that: The grouping of different gas pressures according to the approximation degree to obtain a plurality of clusters includes: The reciprocal of the degree of similarity between any two gas pressures is the difference distance between the any two gas pressures; Based on the difference distance, the different gas pressures are grouped using the K-Means clustering algorithm.

6. The gas leak alarm safety analysis method according to claim 1, characterized in that: The fluctuation value of each flame heat sequence is: the variance of the flame heat sequence is the fluctuation value.

7. The gas leak alarm safety analysis method according to claim 1, characterized in that: The method for acquiring the real-time output flow is: using a gas flow meter to collect the real-time input flow and real-time output flow of the gas.

8. The gas leak alarm safety analysis method according to claim 1, characterized in that: The method for obtaining the flame heat is: using a thermal imager to collect a thermodynamic map of the flame area of ​​the gas; and obtaining the area of ​​the red area in the thermodynamic map as the flame heat.

9. The gas leak alarm safety analysis method according to claim 1, characterized in that: The early warning according to the alarm indicator includes: According to the size of the alarm indicator, the corresponding clusters are divided into a severe hazard cluster, a slight hazard cluster and a no hazard cluster; The warning lights corresponding to the gas pressures in the severe hazard cluster are red; the warning lights corresponding to the gas pressures in the minor hazard cluster are yellow; and the warning lights corresponding to the gas pressures in the non-hazard cluster are green.

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