Method and device for acquiring pipeline running pressure and computer readable storage medium

Abstract

The embodiment of the application discloses a pipeline operation pressure acquisition method and device and a computer readable storage medium, and belongs to the technical field of oil and gas pipeline safety. In the embodiment of the application, the special weld opening density corresponding to the target pipeline in the high consequence area and the distance between the target pipeline and the high-density area of personnel in the high consequence area are considered to determine the pipeline operation pressure. Therefore, it can be seen that the factors considered in the scheme are more in line with the actual situation of the target pipeline, rather than subjectively determining the pipeline operation pressure, thereby improving the accuracy of acquiring the pipeline operation pressure and providing reliable technical support for pipeline operation and risk control. In addition, the scheme does not need to carry out complex experiments, and the efficiency of acquiring the pipeline operation pressure is improved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of oil and gas pipeline safety, and particularly relate to a method and device for obtaining pipeline operating pressure and a computer readable storage medium. BACKGROUND

[0002] In recent years, there are many oil and gas pipeline leakage and explosion events, especially high-strength steel, large-diameter, high-pressure gas pipelines in densely populated high-consequence areas. Once a leakage or explosion occurs, it will cause serious safety and environmental accidents, and huge casualties and economic losses. Therefore, accurately predicting pipeline risks and determining reasonable pipeline operating pressure are crucial to ensuring pipeline safety.

[0003] In related technologies, when a pipeline (pipe section) fails to resume production, the pipeline operating pressure is re-determined. One method is to reduce the pipeline operating pressure to 80% of the pipeline failure, or to 80% of the actual highest operating pressure of the pipeline within the last five years before failure. Another method is to determine the pipeline operating pressure through a water pressure test, that is, to determine the water pressure test pressure when the pipeline fails through a water pressure test, and to take 80% of the water pressure test pressure as the maximum operating pressure allowed for the pipeline to resume production, that is, as the obtained pipeline operating pressure.

[0004] The first method described above is subjective and not very accurate, and there is still a high risk of pipeline operation. The second method described above requires the use of water sources and complex test operations, and is less efficient. SUMMARY

[0005] Embodiments of the present application provide a method and device for obtaining pipeline operating pressure and a computer readable storage medium, which can improve the accuracy of obtaining pipeline operating pressure, improve the efficiency of obtaining, and reduce the risk of pipeline operation. The technical solution is as follows:

[0006] On the one hand, a method for obtaining pipeline operating pressure is provided, which includes:

[0007] According to the special weld density corresponding to the target pipeline in one or more high-consequence areas, and the distance between the target pipeline and the high-density area of personnel in the one or more high-consequence areas, at least one first prediction value is determined, the high-density area of personnel refers to an area where the number of personnel is greater than a reference number;

[0008] According to the at least one first prediction value, the pipeline operating pressure of the target pipeline is determined.

[0009] Optionally, the at least one first prediction value is determined according to the special weld density corresponding to the target pipeline in one or more high-consequence areas, and the distance between the target pipeline and the high-density area of personnel in the one or more high-consequence areas, includes:

[0010] For any high consequence area of the one or more high consequence areas, according to a pipeline design pressure and a pipeline diameter of the target pipeline, determining a first fire radius, a first fatality radius and a first potential impact radius;

[0011] According to the first fire radius, the first fatality radius and the first potential impact radius, and a distance between the target pipeline and a high density area of personnel in the any high consequence area, determining a first casualty number level;

[0012] According to the first casualty number level and a special joint density corresponding to the target pipeline in the any high consequence area, determining a first pipeline risk level;

[0013] If the first pipeline risk level reaches a reference risk level, according to a pipeline diameter of the target pipeline and the distance between the target pipeline and the high density area of personnel in the any high consequence area, determining a first prediction value.

[0014] Optionally, the determining a first pipeline risk level according to the first casualty number level and the special joint density corresponding to the target pipeline in the any high consequence area comprises:

[0015] According to the special joint density corresponding to the target pipeline in the any high consequence area, determining a first special joint density level;

[0016] Obtaining a risk matrix, the risk matrix being used to represent a mapping relationship between a special joint density level, a casualty number level and a pipeline risk level;

[0017] From the risk matrix, obtaining a pipeline risk level corresponding to the first casualty number level and the first special joint density level as the first pipeline risk level.

[0018] Optionally, the determining a first prediction value according to the pipeline diameter of the target pipeline and the distance between the target pipeline and the high density area of personnel in the any high consequence area comprises:

[0019] According to the distance between the target pipeline and the high density area of personnel in the any high consequence area, determining a target casualty radius, the target casualty radius satisfying that a pipeline risk level of the target pipeline is lower than the first pipeline risk level;

[0020] According to the target casualty radius and the pipeline diameter of the target pipeline, determining a first prediction value.

[0021] Optionally, after the first pipeline risk level is determined according to the special weld density corresponding to the first casualty level and the target pipeline in any of the high consequence areas, the method further comprises:

[0022] If the first pipeline risk level does not reach the reference risk level, the pipeline design pressure of the target pipeline is determined as a first predicted value.

[0023] Optionally, before the pipeline operating pressure of the target pipeline is determined according to the at least one first predicted value, the method further comprises:

[0024] At least one of a second predicted value, a third predicted value, and a fourth predicted value is obtained.

[0025] The pipeline operating pressure of the target pipeline is determined according to the at least one first predicted value, and at least one of the second predicted value, the third predicted value, and the fourth predicted value.

[0026] The pipeline operating pressure of the target pipeline is determined according to the at least one first predicted value, and at least one of the second predicted value, the third predicted value, and the fourth predicted value.

[0027] The second predicted value is determined according to the pipeline design coefficient and the pipeline wall thickness corresponding to each of the one or more first high consequence areas in which the target pipeline is located, the one or more first high consequence areas being the high consequence areas in which the corresponding region level of the one or more high consequence areas is upgraded.

[0028] The third predicted value is determined according to the defect weld information corresponding to each of the one or more high consequence areas in which the target pipeline is located.

[0029] The fourth predicted value is determined according to the historical failure rectification information and the pipeline design pressure of the target pipeline.

[0030] In another aspect, a pipeline operating pressure acquisition device is provided, the device comprising:

[0031] A first determination module is configured to determine at least one first predicted value according to the special weld density corresponding to the target pipeline in the one or more high consequence areas, and the distance between the target pipeline and a high-density personnel area in the one or more high consequence areas, the high-density personnel area being an area in which the number of personnel is greater than a reference number.

[0032] A second determination module is configured to determine the pipeline operating pressure of the target pipeline according to the at least one first predicted value.

[0033] Optionally, the first determination module comprises:

[0034] The first determining unit is configured to determine, for any high-consequence area in the one or more high-consequence areas, a first fire radius, a first death radius and a first potential impact radius according to a pipeline design pressure and a pipeline diameter of the target pipeline;

[0035] The second determining unit is configured to determine a first casualty number level according to the first fire radius, the first death radius and the first potential impact radius, and a distance between the target pipeline and a high-density personnel area in the any high-consequence area;

[0036] The third determining unit is configured to determine a first pipeline risk level according to the first casualty number level and a special weld density corresponding to the target pipeline in the any high-consequence area.

[0037] The fourth determining unit is configured to determine a first prediction value according to a pipeline diameter of the target pipeline and the distance between the target pipeline and the high-density personnel area in the any high-consequence area if the first pipeline risk level reaches a reference risk level.

[0038] Optionally, the third determining unit comprises:

[0039] The first determining sub-unit is configured to determine a first special weld density level according to the special weld density corresponding to the target pipeline in the any high-consequence area.

[0040] The first obtaining sub-unit is configured to obtain a risk matrix, the risk matrix being used to represent a mapping relationship between a special weld density level, a casualty number level and a pipeline risk level.

[0041] The second obtaining sub-unit is configured to obtain, from the risk matrix, a pipeline risk level corresponding to the first casualty number level and the first special weld density level as the first pipeline risk level.

[0042] Optionally, the fourth determining unit comprises:

[0043] The first determining sub-unit is configured to determine a target casualty radius according to the distance between the target pipeline and the high-density personnel area in the any high-consequence area, the target casualty radius satisfying that a pipeline risk level of the target pipeline is lower than the first pipeline risk level.

[0044] The second obtaining sub-unit is configured to determine a first prediction value according to the target casualty radius and a pipeline diameter of the target pipeline.

[0045] Optionally, the first determining module further comprises:

[0046] The fifth determining unit is configured to determine the pipeline design pressure of the target pipeline as a first predicted value if the first pipeline risk level does not reach the reference risk level.

[0047] Optionally, the apparatus further comprises:

[0048] The acquisition module is configured to acquire at least one of a second predicted value, a third predicted value and a fourth predicted value.

[0049] The second determining module comprises:

[0050] The sixth determining unit is configured to determine the pipeline operation pressure of the target pipeline according to the at least one first predicted value and at least one of the second predicted value, the third predicted value and the fourth predicted value.

[0051] The second predicted value is determined according to a corresponding pipeline design coefficient and a pipeline wall thickness of the target pipeline in each first high-consequence zone of the one or more first high-consequence zones, the one or more first high-consequence zones being the high-consequence zones of the corresponding region level upgrade in the one or more high-consequence zones.

[0052] The third predicted value is determined according to corresponding defect weld information of the target pipeline in each high-consequence zone of the one or more high-consequence zones.

[0053] The fourth predicted value is determined according to historical failure rectification information and a pipeline design pressure of the target pipeline.

[0054] In another aspect, a computer device is provided, which comprises a processor, a communication interface, a memory and a communication bus, the processor, the communication interface and the memory complete communication with each other through the communication bus, the memory is used to store a computer program, and the processor is used to execute the program stored on the memory to realize the steps of the pipeline operation pressure acquisition method.

[0055] In another aspect, a computer readable storage medium is provided, which stores a computer program, and the computer program is executed by a processor to realize the steps of the pipeline operation pressure acquisition method.

[0056] In another aspect, a computer program product containing instructions is provided, which, when executed on a computer, causes the computer to perform the steps of the pipeline operation pressure acquisition method.

[0057] The technical scheme provided by the embodiments of the present application can bring at least the following beneficial effects:

[0058] In the embodiment of the present application, the special weld opening density of the target pipeline in the high consequence area and the distance between the high-density area of personnel in the high consequence area and the target pipeline are considered to determine the pipeline operating pressure. Therefore, the factors considered in the present scheme are more in line with the actual situation of the target pipeline, rather than subjectively determining the pipeline operating pressure, thereby improving the accuracy of obtaining the pipeline operating pressure and providing reliable technical support for pipeline operation and risk control. In addition, the present scheme does not need to perform complex experiments, thereby improving the efficiency of obtaining the pipeline operating pressure. BRIEF DESCRIPTION OF DRAWINGS

[0059] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0060] Figure 1 is a flowchart of a pipeline operating pressure acquisition method provided by an embodiment of the present application;

[0061] Figure 2 is a flowchart of another pipeline operating pressure acquisition method provided by an embodiment of the present application;

[0062] Figure 3 is a structural schematic diagram of a pipeline operating pressure acquisition device provided by an embodiment of the present application;

[0063] Figure 4 is a structural schematic diagram of a computer device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0065] First, some professional terms and part of the nouns designed in the embodiments of the present application are explained.

[0066] High consequence area: according to the national or regional specifications, etc. to determine whether the area where the target pipeline is located is a high consequence area, and the classification of the high consequence area. For example, according to the high consequence area pipe section identification classification table in the national standard GB32167 to determine and classify. The high consequence area means that the loss degree is high if the pipeline is dangerous, that is, the area that may cause great adverse effects on the public and the environment after the pipeline leaks.

[0067] Region grade: According to the national or regional specifications, the region grade of the target pipeline is divided. For example, according to the provisions in GB50251, according to the number of households and / or the density of buildings along the pipeline, it is divided into four region grades.

[0068] Region grade upgrade of high consequence area: The region grade of the region where the high consequence area is located is upgraded. Assuming that the region grade is divided into first, second, third and fourth grades, the region grade of the high consequence area is upgraded, such as second grade to third grade, third grade to fourth grade.

[0069] Special weld: including the weld formed during the assembly of the pipeline connected with the elbow, the weld connected with the valve group, the weld of the reducer, the suspicious weld of the bottom sheet, the suspected black hole, the variable wall thickness hole, the repair hole, etc. During the pipeline construction, repair, etc., the relevant information of each weld on the pipeline is recorded, including whether it is a special weld, and the relevant information of the special weld on the target pipeline can be obtained according to the record.

[0070] Ignition radius: used to represent the area where the heat flux reaches 37.5kw / m 2 (1,000watts per square meter) and above after the pipeline breaks and catches fire. The death probability of the unprotected personnel in this area is 100% for 1 minute and 1% for 10 seconds, and the combustible material will catch fire in a short time without flame. The simplified empirical formula is formula (1):

[0071] (1)

[0072] Wherein, r is the ignition radius, unit m (meter); p is the pipeline operating pressure, unit MPa (mega pascal), d is the pipe diameter, unit mm.

[0073] Death radius: used to represent the area where the heat flux reaches 25kw / m 2 and above after the pipeline breaks and catches fire. The death probability of the unprotected personnel in this area is 100% for 1 minute and 10 seconds will cause serious burns. The simplified empirical formula is formula (2):

[0074] (2)

[0075] Potential impact radius: used to represent the area where the heat flux reaches 15.8kw / m 2 and above after the pipeline breaks and catches fire. The death probability of the unprotected personnel in this area is 1% for 30 seconds. The simplified empirical formula is formula (3):

[0076] (3)

[0077] Next, the method for obtaining the pipeline operating pressure provided by the embodiment of the application is explained in detail.

[0078] Figure 1 is a flowchart of a pipeline operation pressure acquisition method provided by an embodiment of the present application. Optionally, the method is applied to a computer device. Please refer to Figure 1 , the method comprises the following steps.

[0079] Step 101: determining at least one first prediction value according to the special weld opening density corresponding to the target pipeline in one or more high consequence areas and the distance between the target pipeline and the high personnel density area in the one or more high consequence areas.

[0080] Since the high consequence area is considered, which is seriously affected by the target pipeline in case of leakage, explosion and the like, and the density of the special weld opening on the target pipeline is an element affecting the safe operation of the target pipeline, in the embodiment of the present application, at least one first prediction value is determined according to the special weld opening density corresponding to the target pipeline in one or more high consequence areas and the distance between the target pipeline and the high personnel density area in the one or more high consequence areas.

[0081] The high personnel density area refers to an area with a number of personnel greater than a reference number. The number of personnel can be expressed in the number of people or the number of households. When expressed in the number of households, the high personnel density area refers to an area with a number of households greater than a reference number of households. The reference number and the reference number of households can be set based on experience, which is not limited in the embodiment of the present application.

[0082] In the embodiment of the present application, the higher the special weld opening density corresponding to the high consequence area, the higher the risk of the target pipeline itself, so the pipeline operation pressure of the target pipeline should be relatively reduced to reduce the pipeline operation risk. The higher the personnel density in the high consequence area, the higher the loss degree in case of leakage, explosion and the like of the target pipeline, so the pipeline operation pressure of the target pipeline should also be relatively small to reduce the pipeline operation risk.

[0083] Optionally, for any one of the one or more high consequence areas, a first prediction value is determined according to the special weld opening density corresponding to the target pipeline in the high consequence area and the distance between the target pipeline and the high personnel density area in the high consequence area. If there are multiple high consequence areas in the area where the target pipeline is located, then each high consequence area corresponds to a first prediction value, and the at least one prediction value refers to multiple first prediction values corresponding to the multiple high consequence areas. Alternatively, the first prediction values corresponding to different high consequence areas can be the same, and the at least one first prediction value refers to the first prediction value after deduplication of the multiple first prediction values.

[0084] It should be noted that in the embodiments of the present application, there are many implementation manners for determining the at least one first prediction value according to the special weld joint density of the target pipeline in one or more high consequence areas and the distance between the target pipeline and the high-density personnel area in the one or more high consequence areas. Next, taking any one of the one or more high consequence areas as an example, a specific implementation manner for determining the first prediction value is introduced in detail. For other high consequence areas in the plurality of high consequence areas, the corresponding first prediction value can be determined by referring to the following related introduction.

[0085] In the embodiments of the present application, for any one of the one or more high consequence areas, the first fire radius, the first lethal radius and the first potential impact radius are determined according to the pipeline design pressure and the pipe diameter of the target pipeline. The first casualty number grade is determined according to the first fire radius, the first lethal radius and the first potential impact radius, and the distance between the target pipeline and the high-density personnel area in the high consequence area. The first pipeline risk grade is determined according to the first casualty number grade and the special weld joint density of the target pipeline in the high consequence area. If the first pipeline risk grade reaches the reference risk level, a first prediction value is determined according to the pipe diameter of the target pipeline and the distance between the target pipeline and the high-density personnel area in the high consequence area.

[0086] For the high consequence area, according to the foregoing related introduction of the fire radius, the lethal radius and the potential impact radius, the first fire radius, the first lethal radius and the first potential impact radius are calculated based on formula (1), formula (2) and formula (3) respectively according to the pipeline design pressure and the pipe diameter of the target pipeline.

[0087] Exemplarily, assuming that the target pipeline is pipeline A, the pipeline design pressure of pipeline A is 10 MPa, and the pipe diameter is 1016 mm, then the first fire radius calculated based on formula (1) is 205 m, the first lethal radius is 250 m, and the first potential impact radius is 318 m.

[0088] In the embodiment of the present application, the correspondence between the radius of the number of casualties in the high-consequence area, the reference number of households and the casualty level is stored in advance. According to the correspondence, the first casualty level is determined according to the first fire radius, the first lethal radius and the first potential impact radius, and the distance between the target pipeline and the high-density personnel area in the high-consequence area. For example, the correspondence is shown in Table 1. Assuming that the first fire radius is 205 m, the first lethal radius is 250 m, the first potential impact radius is 318 m, and the distance between the target pipeline and the high-density personnel area in the high-consequence area is 100 m, according to Table 1, it is known that the high-consequence area belongs to the high-density personnel area in the 1 / 2 fire radius (such as the specific place I or the area where four or more floors are generally concentrated as shown in Table 1), and according to Table 1, the first casualty level is high. It should be noted that Table 1 is not used to limit the embodiment of the present application.

[0089] Table 1

[0090]

[0091] In the embodiment of the present application, according to the first casualty level and the special weld port density corresponding to the target pipeline in the high-consequence area, one implementation of the first pipeline risk level is to determine the first special weld port density level according to the special weld port density corresponding to the target pipeline in the high-consequence area. Obtain the risk matrix, and obtain the pipeline risk level corresponding to the first casualty level and the first special weld port density level from the risk matrix as the first pipeline risk level. The risk matrix is used to represent the mapping relationship between the special weld port density level, the casualty level and the pipeline risk level.

[0092] For example, the special weld port density corresponding to the high-consequence area = the number of special weld ports / the length of the high-consequence area pipeline section, and the unit of the special weld port density is port / km, wherein the number of special weld ports = the number of questionable weld port, the number of suspected black port, the number of elbow connecting port, the number of variable wall thickness port, the number of connecting port and the number of repair port. Assuming that the length of the high-consequence area pipeline section corresponding to the pipeline A is 6.4 km, and the number of special weld ports is 160, then the special weld port density corresponding to the high-consequence area is 25 ports / km.

[0093] In the embodiment of the present application, different special weld port densities correspond to different special weld port density levels, and the correspondence between the special weld port density and the special weld port density level is stored in advance. According to the special weld port density corresponding to the high-consequence area and the correspondence, the first special weld port density level is determined.

[0094] Exemplarily, Table 2 is a special weld joint density grade classification table provided by the embodiment of the present application. As shown in Table 2, assuming that the corresponding special weld joint density in the high consequence area is 25 weld joints per kilometer, the first special weld joint density grade is medium. It should be noted that Table 2 is not used to limit the embodiment of the present application.

[0095] Table 2

[0096]

[0097] In the embodiment of the present application, a risk matrix is stored in advance, and the risk matrix is used to represent the mapping relationship between the special weld joint density grade, the casualty number grade and the pipeline risk grade. Then, the risk matrix is acquired, and the pipeline risk grade corresponding to the first casualty number grade and the first special weld joint density grade is acquired from the risk matrix as the first pipeline risk grade.

[0098] Exemplarily, Table 3 is a risk matrix provided by the embodiment of the present application. Referring to Table 3, the pipeline risk grade is divided into three levels, which are low, medium and high. Assuming that the first casualty number grade is high and the first special weld joint density grade is medium, the first pipeline risk grade is high.

[0099] Table 3

[0100]

[0101] It should be noted that Table 3 is not used to limit the embodiment of the present application, and the pipeline risk grade can also be divided into any number of levels, for example, divided into five levels, which are low, low medium, medium, high medium and high.

[0102] In the embodiment of the present application, the pipeline design pressure is the operation pressure designed when the target pipeline is initially planned. With the actual operation of the pipeline, the target pipeline will be consumed. If the pipeline is still operated at the pipeline design pressure, the risk of pipeline operation is large. The first pipeline risk grade is determined under the condition of the pipeline design pressure. If the first pipeline risk grade reaches the reference risk level, it means that the risk is high if the pipeline is still operated at the pipeline design pressure. At this time, the distance of the high-density personnel area needs to be considered to determine the first predicted value.

[0103] Optionally, in some embodiments, the reference risk level is a high risk level. In other embodiments, the reference risk level can also be a high-medium risk level.

[0104] Exemplarily, by continuously reducing the pipeline operation pressure until the pipeline risk grade of the target pipeline determined according to the reduced pipeline operation pressure based on the same method as described above is lower than the first pipeline risk grade, the last reduced pipeline operation pressure is determined as the first predicted value.

[0105] Alternatively, a target casualty radius is determined according to the distance between the target pipeline and the high-density area of personnel in the high-consequence area, and a first predicted value is determined according to the target casualty radius, so that the final pipeline risk level is lower than the first pipeline risk level.

[0106] That is, a target casualty radius is determined according to the distance between the target pipeline and the high-density area of personnel in the high-consequence area, and a first predicted value is determined according to the target casualty radius and the pipe diameter of the target pipeline. The target casualty radius satisfies that the pipeline risk level of the target pipeline is lower than the first pipeline risk level.

[0107] Exemplarily, taking Table 1, Table 2 and Table 3 as examples, it is assumed that the pipe diameter of the target pipeline is 1016 mm, the first special weld opening density level is medium, the first casualty number level is high, and the first pipeline risk level is high. In order to make the pipeline risk level of the target pipeline lower than the first pipeline risk level, that is, to reduce the pipeline risk level of the target pipeline to medium or low, the casualty number level needs to be reduced to medium, lower or low. It is assumed that the distance between the target pipeline and the high-density area of personnel in the high-consequence area is 102 m, and referring to Table 1, in order to make the casualty number level at least medium, the ignition radius needs to be adjusted to be less than 102 m. It is assumed that the target casualty radius is determined to be 100 m, the ignition radius is adjusted to be equal to the target casualty radius, that is, the ignition radius is adjusted to be 100 m, and then the pipeline operating pressure is calculated to be 2.36 MPa according to formula (1), and then 2.36 MPa is determined as a first predicted value.

[0108] In the embodiment of the present application, if the first pipeline risk level does not reach the reference risk level, the pipeline design pressure of the target pipeline is determined as a first predicted value. That is, if the target pipeline continues to operate at the pipeline design pressure, the target pipeline has a relatively low operating risk.

[0109] Step 102: determining the pipeline operating pressure of the target pipeline according to the at least one first predicted value.

[0110] In the embodiment of the present application, after the at least one first predicted value is determined, the pipeline operating pressure of the target pipeline is determined according to the at least one first predicted value. Exemplarily, the minimum value in the at least one first predicted value is determined as the pipeline operating pressure of the target pipeline. Alternatively, the average value of the at least one first predicted value is determined as the pipeline operating pressure of the target pipeline.

[0111] Alternatively, in addition to the above-mentioned determination of the pipeline operating pressure according to the at least one first predicted value, the embodiment of the present application can also refer to at least one of the second predicted value, the third predicted value and the fourth predicted value, and use the at least one first predicted value and the at least one of the second predicted value, the third predicted value and the fourth predicted value together to determine the pipeline operating pressure.

[0112] That is, according to the at least one first prediction value, at least one of the second prediction value, the third prediction value and the fourth prediction value is further obtained before the pipeline operating pressure of the target pipeline is determined. After the at least one first prediction value is determined, the pipeline operating pressure of the target pipeline is determined according to the at least one first prediction value and at least one of the second prediction value, the third prediction value and the fourth prediction value.

[0113] The second prediction value is determined according to the corresponding pipeline design coefficient and the pipeline wall thickness of the target pipeline in each of one or more first high consequence areas, which are the high consequence areas corresponding to the upgraded regional level in the one or more high consequence areas. The third prediction value is determined according to the corresponding defect weld information of the target pipeline in each of the one or more high consequence areas. The fourth prediction value is determined according to the historical failure rectification information of the target pipeline and the pipeline design pressure.

[0114] Exemplarily, assuming that the first prediction value, the second prediction value, the third prediction value and the fourth prediction value are comprehensively considered, the minimum value of the at least one first prediction value and the second prediction value, the third prediction value and the fourth prediction value is determined as the pipeline operating pressure of the target pipeline.

[0115] Next, the determination methods of the second prediction value, the third prediction value and the fourth prediction value are introduced respectively.

[0116] First, the method for determining the second prediction value is introduced. In the embodiments of the present application, the regional level is divided into multiple levels, for example, the regional level is divided into level one, level two, level three and level four according to GB50251. It is considered that if the regional level of a high consequence area is upgraded, for example, level two is upgraded to level three, or level three is upgraded to level four, it indicates that the pipeline operating risk of the target pipeline in the high consequence area is increased, and in this case, the pipeline operating pressure of the target pipeline needs to be re-determined to reduce the pipeline operating risk. Alternatively, the high consequence area in which the regional level is upgraded is identified by comparing the design construction data and the actual regional level identified in the high consequence area identification work.

[0117] In the embodiments of the present application, the second prediction value is determined according to the corresponding pipeline design coefficient and the pipeline wall thickness of the target pipeline in each of one or more first high consequence areas, which are the high consequence areas corresponding to the upgraded regional level in the one or more high consequence areas.

[0118] Exemplarily, for any one of the one or more high-consequence areas where the target pipeline is located, i.e., for any one first high-consequence area, the wall thickness (current wall thickness) and the pipeline design coefficient of the target pipeline in the first high-consequence area are obtained, the pipeline operating pressure under the pipeline wall thickness and the pipeline design coefficient is calculated according to the relevant formula in GB50251, and a second reference prediction value is obtained. If there are multiple first high-consequence areas, multiple second reference prediction values are obtained. The minimum value of the multiple second reference prediction values is determined as the second prediction value, or the average value of the multiple second reference prediction values is determined as the second prediction value.

[0119] Exemplarily, the actual situation of the high-consequence area where the pipeline A is located is investigated. Compared with the area grade during the construction period, there is one high-consequence area whose area grade is upgraded from level two to level three due to the newly added personnel-intensive place during the pipeline operation period. Then, according to the pipeline design coefficient corresponding to the current area grade and the pipeline wall thickness of the target pipeline, the current maximum allowable operating pressure of the target pipeline is calculated as 8.33 MPa according to GB50251, and 8.33 MPa is taken as the second prediction value.

[0120] Secondly, the determination method of the third prediction value is introduced. In the embodiment of the present application, the third prediction value is determined according to the defect weld information of the target pipeline in each of the one or more high-consequence areas. That is, considering the safety hidden danger of the defect weld of the target pipeline in the high-consequence area during pipeline operation, the pipeline operating pressure of the target pipeline is determined according to the defect weld information to reduce the pipeline operation risk.

[0121] In the embodiment of the present application, the defect information corresponding to each of the one or more high-consequence areas of the target pipeline is obtained, and the minimum safety pressure of the defect weld is determined by combining the engineering applicability evaluation method, and the minimum safety pressure is taken as the third prediction value. The engineering applicability evaluation method includes the following steps:

[0122] 1. The girth weld defect data of the radiographic film re-evaluation during the construction period, the magnetic internal detection, and the non-destructive testing report after excavation are normalized and treated as input parameters of the defect applicability evaluation model in step 3. The non-destructive testing methods include radiographic testing, ultrasonic testing, PAUT (phased array ultrasonic testing), TOFD (time of flight diffraction), etc. Normalization is to unify the data of different detection methods according to the requirements of the parameters in the evaluation method in step 3, so as to obtain parameters and information that meet the evaluation requirements.

[0123] 2. Determine the defect type. According to the defect detection, the circular defects (point-shaped pores, point-shaped slag inclusions), concave, burn-through, etc. are classified as volume defects, and the cracks, incomplete fusion, incomplete penetration, undercut, strip-shaped defects (strip-shaped pores, strip-shaped slag inclusions) are classified as planar defects.

[0124] 3. Select the defect applicability evaluation model to evaluate the defect weld. For volume defects, only the plastic failure mode is considered, and the Kastner method is used for evaluation to obtain the failure pressure corresponding to the volume defects. For planar defects, both plastic failure and fracture failure modes are considered, and the FAD (Failure Assessment Diagram) is used for evaluation to obtain the failure pressure corresponding to the planar defects. The minimum value of the failure pressure corresponding to the volume defects and the planar defects is taken as the reference maximum operating pressure for subsequent determination of the third predicted value. That is, the failure pressure of each defect weld is calculated, and the lowest value is taken as the reference maximum operating pressure. The third predicted value does not exceed the reference maximum operating pressure to ensure safety.

[0125] 4. Obtain the pipe material parameters of the target pipeline, including yield strength, tensile strength, fracture toughness, etc. According to the principle of determining material performance data in standard GB / T 19624-2004 5.5.2, determine the pipe material parameters, and the mechanical performance parameters are mainly based on the measured values.

[0126] 5. Quantify the defect size. In the non-destructive testing results of step 1, if the defect length and depth size (height) of the defect weld are known, the values are taken according to the detection results. For defect welds with missing depth size, reasonable assumptions are made according to the rules shown in steps 5.1 to 5.7 below, which are taken as the depth size of these defect welds.

[0127] 6. Load analysis to determine operating pressure, temperature change, axial load caused by external load, welding residual stress, etc. According to the applicability evaluation standards BS 7910:2013, SY / T 6477-2017, GB / T 19624-2004, API 579-12016, etc., considering that the girth weld is a multi-layer weld, each layer of welding has a heat treatment effect on the previous layer, and the defect of the dangerous girth weld is mostly located in the root weld layer, therefore, 40% of the yield strength is selected as the welding residual stress in the evaluation.

[0128] wherein, step 5 includes steps 5.1 to 5.7 as follows:

[0129] 5.1, Quantify the point porosity, point slag inclusion and other circular defects. According to the SY / T 4109-2013 "Nondestructive Testing of Steel Pipes for Petroleum and Natural Gas" Clause 4.18.3, convert the number of points of the circular defects according to Table 4, and then rate the film according to the number of defect points. After conversion, set the length and height dimensions of the porosity and other circular defects, and the height shall not exceed the weld layer thickness, such as 3mm (millimeters).

[0130] Table 4

[0131]

[0132] 5.2, Quantify the weld concave, burn-through defects. According to the SY / T 4109-2013 "Nondestructive Testing of Steel Pipes for Petroleum and Natural Gas" Clauses 4.18.9 and 4.18.10, for Class III and Class IV film concave, burn-through, the height takes the maximum allowable height, such as 2mm, and the length takes the nondestructive testing length.

[0133] 5.3, Quantify the undercut defect. According to the SY / T 4109-2013 "Nondestructive Testing of Steel Pipes for Petroleum and Natural Gas" Clause 4.18.11, the undercut height takes the maximum allowable height, such as 2mm, and the length takes the nondestructive testing length.

[0134] 5.4, Quantify the strip porosity, strip slag inclusion and other strip defects. According to the SY / T 4109-2013 "Nondestructive Testing of Steel Pipes for Petroleum and Natural Gas" Clause 4.18.4, the height of the strip defect shall not exceed the weld layer thickness, for example, the height takes the weld layer thickness, such as 3mm, and the length takes the nondestructive testing length.

[0135] 5.5, Quantify the incomplete fusion / incomplete penetration defect. According to the SY / T 4109-2013 "Nondestructive Testing of Steel Pipes for Petroleum and Natural Gas" Clauses 4.18.5-4.18.8, the depth of the incomplete fusion / incomplete penetration defect is set to the root weld layer thickness, such as 3.2mm, and the length takes the nondestructive testing length.

[0136] 5.6, Quantify the linear image. If the film evaluator cannot determine the linear image of the defect result, the depth is assumed to be one weld pass thickness, and the length is determined according to the test result.

[0137] 5.7, Quantify the open defect and buried defect. Take the root weld thickness (such as 3.2mm) as the depth of the open defect, and take the filler weld pass thickness as the depth of the buried defect, such as 3mm, and the length is determined according to the test result.

[0138] After the above steps 1 to 6, the minimum safety pressure of all defect welds is determined according to the applicability evaluation method, and the minimum safety pressure is taken as the third prediction value.

[0139] Exemplarily, a defective weld in a high-consequence area where the pipeline A is located is investigated. Film review and excavation detection are performed on 20 suspicious welds, and ultrasonic, radiographic, TOFD, PAUT, etc. are used for detection, and a total of 80 defective welds are found. Then the following steps 1 to 6 are executed:

[0140] 1. Normalize the defect data of various detection methods to obtain the input parameters of the subsequent defect suitability evaluation model.

[0141] 2. Classify the 80 defective welds, of which 20 are volumetric defects such as burn-through, circular lack (point-like porosity, point-like slag inclusion), and 60 are planar defects such as incomplete fusion, strip-like lack (strip-like porosity, strip-like slag inclusion);

[0142] 3. For the 20 volumetric defects, Kastner method is used for evaluation to obtain the failure pressure of each volumetric defect. For the 60 planar defects, FAD is used for evaluation to obtain the failure pressure of each planar defect. The minimum value of the failure pressure of the 80 defective welds is taken as the maximum reference operating pressure.

[0143] 4. Obtain the measured values of the mechanical property parameters of the pipe material through tensile property test and Charpy impact property test.

[0144] 5. Quantify the defect size. For the defective welds with known defect length and depth size (height) in the film review or non-destructive testing results, the values are taken from the review and testing results. In the case of missing depth size, the circular lack in pipeline A is converted into the number of points of circular lack according to Table 4, and then the film rating is performed according to the number of points. After conversion, the length and height of the porosity and other circular lack are set, and the height does not exceed the thickness of the weld layer (such as 3mm). The length of the burn-through, incomplete fusion, and strip in this report is taken from the non-destructive testing report, and the height is taken as one weld thickness (such as 3mm).

[0145] 6. The load of the volumetric girth weld defect is selected as 40% of the yield strength as the welding residual stress, and the maximum axial load is 101MPa.

[0146] Based on the data obtained from the above steps 1 to 6, for the volumetric girth weld defects of the A pipe section, under the condition that the load is taken as 1.39 safety factor, all the volumetric defects are acceptable under 3 working conditions (i.e. the pipeline internal pressure is taken as 6, 7, and 10MPa respectively), while some planar defects are evaluated as unacceptable. When the pipeline internal pressure is 10MPa, 2 girth welds are evaluated as unacceptable. When the pipeline internal pressure is 7MPa, 1 girth weld is evaluated as unacceptable, and when the pipeline internal pressure is 6MPa, all the defects are evaluated as acceptable. Therefore, the pipeline operating pressure determined by the defect suitability evaluation is 6MPa, i.e. the third predicted value is 6MPa.

[0147] Finally, the method for determining the fourth prediction value is introduced. In the embodiments of the present application, considering that the rectification status of the target pipeline has certain influence on the safe operation of the pipeline, the fourth prediction value is determined according to the historical failure rectification information of the target pipeline and the pipeline design pressure.

[0148] In the embodiments of the present application, if the historical failure rectification information indicates that the rectification is not completed, the fourth prediction value is obtained according to the first limiting ratio and the pipeline design pressure of the target pipeline. If the historical failure rectification information indicates that the rectification is completed, the fourth prediction value is obtained according to the second limiting ratio and the pipeline design pressure of the target pipeline. The second limiting ratio is greater than the first limiting ratio.

[0149] Exemplarily, the major failure and leakage accidents of the target pipeline are counted, and the natural gas pipelines that have pipeline weld failure accidents in the past 5 years and before the completion of effective rectification measures such as line change and defect repair are counted. According to 40% of the pipeline design pressure, the prediction value of the pipeline operating pressure is determined. After the rectification is completed, according to 80% of the pipeline design pressure, the prediction value of the pipeline operating pressure is determined. That is, the first limiting ratio is 40%. If the historical failure rectification information indicates that the rectification is not completed, 40% of the pipeline design pressure of the target pipeline is determined as the fourth prediction value. If the historical failure rectification information indicates that the rectification is completed, 80% of the pipeline design pressure of the target pipeline is determined as the fourth prediction value. Assuming that the pipeline design pressure of the target pipeline is 10 MPa, and the rectification of the target pipeline is not completed, the fourth prediction value is 4 MPa.

[0150] In the embodiments of the present application, the first prediction value, the second prediction value, the third prediction value and the fourth prediction value are determined by the above-mentioned method under the comprehensive consideration of various factors, the minimum value of the first prediction value, the second prediction value, the third prediction value and the fourth prediction value is selected as the pipeline operating pressure of the target pipeline. Exemplarily, the first prediction value is 2.36 MPa, the second prediction value is 8.33 MPa, the third prediction value is 6 MPa, and the fourth prediction value is 4 MPa. Therefore, in order to ensure the safe operation of the pipeline, the minimum value 2.36 MPa is taken as the pipeline operating pressure of the target pipeline, that is, as the maximum allowable operating pressure of the target pipeline.

[0151] In the case of comprehensive consideration of various factors, the method for obtaining the pipeline operation pressure of the target pipeline can be regarded as a risk-based pipeline operation pressure comprehensive analysis method. The target pipeline is subjected to pipeline comprehensive risk analysis based on the current prominent internal and external risks of the target pipeline, the area level upgrade investigation based on the high consequence area (determination of the second prediction value), the defect suitability evaluation of the defect weld in the high consequence area (determination of the third prediction value), the pipeline failure accident analysis (determination of the fourth prediction value), and the risk matrix of the special weld density level and the casualty number level in the high consequence area (determination of the first prediction value), etc. to determine the maximum allowable pipeline operation pressure. As can be seen, the scheme further improves the comprehensiveness of the factors considered when obtaining the pipeline operation pressure and improves the accuracy of obtaining the pipeline operation pressure, which is more in line with the actual operation of the pipeline and provides reliable technical support for pipeline operation and risk control, and has a wide application prospect.

[0152] It should be noted that the order of the steps for determining the first prediction value, the second prediction value, the third prediction value and the fourth prediction value in the embodiments of the present application can be adjusted appropriately, and each step can be increased or decreased according to the situation. The embodiments of the present application are not limited. That is, all the above optional technical solutions can be combined to form optional embodiments of the present application, and the embodiments of the present application will not be described again.

[0153] Optionally, after determining the pipeline operation pressure of the target pipeline, the target pipeline is actually operated according to the operation pressure to test whether the determined pipeline operation pressure meets the actual operation requirements of the target pipeline. If the determined pipeline operation pressure meets the actual operation requirements, the target pipeline can be operated at the operation pressure. If the determined pipeline operation pressure does not meet the actual operation requirements, risk control measures such as pipeline defect repair are taken, and then the pipeline operation pressure is determined again according to the method described above until the actual operation requirements of the target pipeline are met.

[0154] Figure 2 is a flowchart of another method for obtaining a pipeline operation pressure provided by the embodiments of the present application. Referring to Figure 2 For the target pipeline (for example, a natural gas pipeline to be analyzed), the corresponding prediction value is determined by four methods. The four methods are: through area level upgrade investigation, the prediction value of the pipeline operation pressure under the current wall thickness is calculated; through defect suitability evaluation, the minimum safety pressure of the defect weld is calculated as the prediction value of the pipeline operation pressure acceptable to the defect weld; through the matrix of the special weld density level and the casualty number level (i.e. the risk matrix, i.e. Figure 2a risk level to determine a predicted value of the pipeline operating pressure of safe operation; determining the predicted value of the pipeline operating pressure through pipeline failure analysis and statistics of failure rectification; taking the minimum value of the predicted values determined by the four methods as the pipeline operating pressure of the target pipeline. Optionally, the target pipeline is actually operated according to the pipeline operating pressure, and it is judged whether the pipeline operating pressure meets the actual operating pressure of the target pipeline. If it meets, the target pipeline can be operated at the pipeline operating pressure; if it does not meet, the risk control measures are implemented, and then the pipeline operating pressure analysis is performed again until the actual operating requirements of the target pipeline are met.

[0155] In summary, in the embodiment of the present application, the density of the special weld corresponding to the target pipeline in the high consequence area and the distance between the high-density area of personnel in the high consequence area and the target pipeline are considered to determine the pipeline operating pressure. It can be seen that the factors considered in the present solution are more in line with the actual situation of the target pipeline, rather than subjectively determining the pipeline operating pressure, thereby improving the accuracy of obtaining the pipeline operating pressure and providing reliable technical support for pipeline operation and risk control. In addition, the present solution does not need to perform complex experiments, thereby improving the efficiency of obtaining the pipeline operating pressure.

[0156] Figure 3 is a structural schematic diagram of a pipeline operating pressure obtaining device 300 provided by an embodiment of the present application. The pipeline operating pressure obtaining device 300 can be realized by software, hardware or a combination of both to become part or all of a computer device. Please refer to Figure 3 The device 300 includes a first determining module 301 and a second determining module 302.

[0157] The first determining module 301 is configured to determine at least one first predicted value according to the density of the special weld corresponding to the target pipeline in one or more high consequence areas and the distance between the target pipeline and the high-density area of personnel in one or more high consequence areas. The high-density area of personnel refers to an area where the number of personnel is greater than a reference number.

[0158] The second determining module 302 is configured to determine the pipeline operating pressure of the target pipeline according to the at least one first predicted value.

[0159] Optionally, the first determining module 301 includes:

[0160] The first determining unit is configured to, for any high consequence area in the one or more high consequence areas, determine a first fire radius, a first lethal radius and a first potential impact radius according to the pipeline design pressure and the pipe diameter of the target pipeline.

[0161] The second determining unit is configured to determine a first casualty level according to the first ignition radius, the first lethal radius, the first potential impact radius, and a distance between the target pipeline and a high-density personnel area in any high-consequence area.

[0162] The third determining unit is configured to determine a first pipeline risk level according to the first casualty level and a special weld density corresponding to the target pipeline in any high-consequence area.

[0163] The fourth determining unit is configured to determine a first prediction value according to a pipe diameter of the target pipeline and the distance between the target pipeline and the high-density personnel area in any high-consequence area if the first pipeline risk level reaches a reference risk level.

[0164] Optionally, the third determining unit includes:

[0165] The first determining sub-unit is configured to determine a first special weld density level according to the special weld density corresponding to the target pipeline in any high-consequence area.

[0166] The first obtaining sub-unit is configured to obtain a risk matrix, the risk matrix being configured to represent a mapping relationship between the special weld density level, the casualty level, and the pipeline risk level.

[0167] The second obtaining sub-unit is configured to obtain, from the risk matrix, a pipeline risk level corresponding to the first casualty level and the first special weld density level as the first pipeline risk level.

[0168] Optionally, the fourth determining unit includes:

[0169] The first determining sub-unit is configured to determine a target casualty radius according to the distance between the target pipeline and the high-density personnel area in any high-consequence area, the target casualty radius satisfying a condition that the pipeline risk level of the target pipeline is lower than the first pipeline risk level.

[0170] The second obtaining sub-unit is configured to determine a first prediction value according to the target casualty radius and the pipe diameter of the target pipeline.

[0171] Optionally, the first determining module further includes:

[0172] The fifth determining unit is configured to determine a pipeline design pressure of the target pipeline as a first prediction value if the first pipeline risk level does not reach the reference risk level.

[0173] Optionally, the apparatus 300 further includes:

[0174] The obtaining module is configured to obtain at least one of the second prediction value, the third prediction value, and the fourth prediction value.

[0175] The second determining module 302 includes:

[0176] a sixth determining unit, configured to determine a pipeline operation pressure of the target pipeline according to the at least one first prediction value and at least one of the second prediction value, the third prediction value and the fourth prediction value.

[0177] The second prediction value is determined according to a corresponding pipeline design coefficient and a pipeline wall thickness of the target pipeline in each first high-consequence area of the one or more first high-consequence areas, the one or more first high-consequence areas being the high-consequence areas corresponding to the upgraded area grade of the one or more high-consequence areas.

[0178] The third prediction value is determined according to corresponding defect weld information of the target pipeline in each high-consequence area of the one or more high-consequence areas.

[0179] The fourth prediction value is determined according to historical failure rectification information of the target pipeline and a pipeline design pressure.

[0180] In the embodiments of the present application, the pipeline operation pressure is determined by considering the corresponding special weld density of the target pipeline in the high-consequence area and the distance between the high-density area of personnel in the high-consequence area and the target pipeline. It can be seen that the factors considered in the present scheme are more in line with the actual situation of the target pipeline, and the pipeline operation pressure is not determined subjectively, thereby improving the accuracy of obtaining the pipeline operation pressure and providing reliable technical support for pipeline operation and risk control. In addition, the present scheme does not need to perform complex experiments, thereby improving the efficiency of obtaining the pipeline operation pressure.

[0181] It should be noted that the pipeline operation pressure obtaining device provided in the above embodiments is only used as an example to illustrate the division of the above functional modules when obtaining the pipeline operation pressure. In actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the pipeline operation pressure obtaining device and the pipeline operation pressure obtaining method provided in the above embodiments belong to the same concept, and the specific implementation process is described in detail in the method embodiments, which will not be repeated here.

[0182] Figure 4 is a structural schematic diagram of a computer device 400 according to an example embodiment. The computer device 400 can be the computer device in the foregoing embodiments. Specifically:

[0183] The computer device 400 includes a central processing unit (CPU) 401, a system memory 404, including a random access memory (RAM) 402 and a read-only memory (ROM) 403, and a system bus 405 that couples the system memory 404 to the central processing unit 401. The computer device 400 also includes a basic input / output system (I / O system) 406 that helps transfer information between elements of the computer, and a mass storage device 407 for storing an operating system 413, application programs 414, and other program modules 415.

[0184] The basic input / output system 406 includes a display 408 for displaying information and input devices 409, such as a mouse, keyboard, or electronic stylus, for inputting information. Both the display 408 and the input devices 409 are connected to the central processing unit 401 through an input / output controller 410 that is connected to the system bus 405. The basic input / output system 406 can also include the input / output controller 410 for receiving and processing input from a number of other devices, such as a keyboard, mouse, or electronic stylus. Similarly, the input / output controller 410 provides output to a display screen, printer, or other type of output device.

[0185] The mass storage device 407 is connected to the central processing unit 401 through a mass storage controller (not shown) that is connected to the system bus 405. The mass storage device 407 and its associated computer-readable media provide nonvolatile storage for the computer device 400. That is, the mass storage device 407 can include a computer-readable medium (not shown) such as a hard disk or a CD-ROM drive.

[0186] Without loss of generality, computer-readable media can include computer storage media and communication media. Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes RAM, ROM, EPROM, EEPROM, flash memory or other solid state memory technology, CD-ROM, DVD, or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices. Computer storage media would not, however, include communication media. The system memory 404 and the mass storage device 407 described above can collectively be referred to as memory.

[0187] According to various embodiments of the present application, the computer device 400 can also operate in connection with a remote computer through a network, such as the Internet. That is, the computer device 400 can connect to the network 412 through a network interface unit 411 connected to the system bus 405, or can connect to other types of networks or remote computer systems (not shown) using the network interface unit 411.

[0188] The above-mentioned memory further includes one or more programs stored in the memory, which are configured to be executed by the CPU. The one or more programs include instructions for performing the method for acquiring the pipeline running pressure provided by the embodiments of the present application.

[0189] In some embodiments, a computer readable storage medium is also provided, in which a computer program is stored, and the computer program is executed by a processor to implement the steps of the method for acquiring the pipeline running pressure in the above-mentioned embodiments. For example, the computer readable storage medium can be a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0190] It is worth noting that the computer readable storage medium mentioned in the embodiments of the present application can be a non-volatile storage medium, in other words, can be a non-transitory storage medium.

[0191] It should be understood that all or part of the steps of the above-mentioned embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product entirely or partially. The computer program product includes one or more computer instructions. The computer instructions can be stored in the above-mentioned computer readable storage medium.

[0192] That is, in some embodiments, a computer program product including instructions, which, when executed on a computer, cause the computer to perform the steps of the method for acquiring the pipeline running pressure described above.

[0193] It should be understood that "at least one" as mentioned herein refers to one or more, and "multiple" refers to two or more. In the description of the embodiments of the present application, " / " represents the meaning of or, for example, A / B can represent A or B; "and / or" herein only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the same items or similar items with basically the same functions and effects are distinguished by "first", "second" and the like. Those skilled in the art can understand that "first", "second" and the like do not limit the quantity and execution order, and "first", "second" and the like do not necessarily mean different.

[0194] The above is the embodiment provided by the present application, which does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method of acquiring a pipeline operating pressure, characterized by, The method comprises: determining at least one first prediction value according to the corresponding special weld opening density of the target pipeline in one or more high consequence areas and the distance between the target pipeline and the high-density area of personnel in the one or more high consequence areas, the high-density area of personnel referring to an area where the number of personnel is greater than a reference number; determining the pipeline operating pressure of the target pipeline according to the at least one first prediction value; wherein the determining of the at least one first prediction value according to the corresponding special weld opening density of the target pipeline in one or more high consequence areas and the distance between the target pipeline and the high-density area of personnel in the one or more high consequence areas comprises: for any high consequence area in the one or more high consequence areas, determining a first fire radius, a first lethal radius and a first potential impact radius according to the pipeline design pressure and the pipe diameter of the target pipeline; determining a first casualty level according to the first fire radius, the first lethal radius and the first potential impact radius, the distance between the target pipeline and the high-density area of personnel in the any high consequence area and the corresponding relationship between the casualty radius and the reference number of households and the casualty level, wherein the high casualty level indicates that there is a specific place I or a generally concentrated area of four-story and above buildings within 1 / 2 of the fire radius and the reference number of households is not less than 100, the higher casualty level indicates that there is a specific place I or a generally concentrated area of four-story and above buildings within the fire radius and the reference number of households is not less than 100, the medium casualty level indicates that there is a specific place I or a generally concentrated area of four-story and above buildings within the lethal radius and the reference number of households is not less than 100, and the lower casualty level indicates that there is a specific place I or a generally concentrated area of four-story and above buildings within the potential impact radius and the reference number of households is not less than 100; determining a first pipeline risk level according to a risk matrix constituted by the first casualty level, the corresponding special weld opening density of the target pipeline in the any high consequence area and the mapping relationship between the special weld opening density level and the pipeline risk level, wherein the higher the casualty level and the higher the special weld opening density level, the higher the corresponding pipeline risk level, and the higher the special weld opening density level indicates the higher the special weld opening density; if the first pipeline risk level reaches a reference risk level, determining a first prediction value according to the pipe diameter of the target pipeline and the distance between the target pipeline and the high-density area of personnel in the any high consequence area, the reference risk level indicating that the risk of operating at the pipeline design pressure is high; wherein the determining of the first prediction value according to the pipe diameter of the target pipeline and the distance between the target pipeline and the high-density area of personnel in the any high consequence area comprises: setting the pipeline risk level of the target pipeline to be lower than the first pipeline risk level, and determining the corresponding casualty level based on the pipeline risk level of the target pipeline and the risk matrix; determine a corresponding casualty number radius and a target casualty radius smaller than the corresponding casualty number radius based on the corresponding casualty number grade and the correspondence and the distance between the target pipeline and the high-density area of personnel in the any high-consequence area; calculate the pipeline operating pressure of the target pipeline based on the target casualty radius and the pipe diameter of the target pipeline, and take the pipeline operating pressure of the target pipeline as the first prediction value.

2. The method of claim 1, wherein, The determining the first pipeline risk grade according to the first casualty number grade and the special weld density corresponding to the target pipeline in the any high-consequence area comprises: determining a first special weld density grade according to the special weld density corresponding to the target pipeline in the any high-consequence area; obtaining the risk matrix; obtaining the pipeline risk grade corresponding to the first casualty number grade and the first special weld density grade from the risk matrix as the first pipeline risk grade.

3. The method of claim 1, wherein, After the determining the first pipeline risk grade according to the first casualty number grade and the special weld density corresponding to the target pipeline in the any high-consequence area, the method further comprises: if the first pipeline risk grade does not reach the reference risk level, determining the pipeline design pressure of the target pipeline as a first prediction value.

4. The method according to any of claims 1 to 3, characterized in that, Before the determining the pipeline operating pressure of the target pipeline according to the at least one first prediction value, the method further comprises: obtaining at least one of a second prediction value, a third prediction value and a fourth prediction value; The determining the pipeline operating pressure of the target pipeline according to the at least one first prediction value comprises: determining the pipeline operating pressure of the target pipeline as the minimum value of the at least one first prediction value, the second prediction value, the third prediction value and the fourth prediction value; wherein the second prediction value is determined according to the pipeline design coefficient and the pipeline wall thickness corresponding to the target pipeline in each first high-consequence area of one or more first high-consequence areas, the one or more first high-consequence areas being the high-consequence areas corresponding to the upgraded area grade in the one or more high-consequence areas; the third prediction value is determined according to the defect weld information corresponding to the target pipeline in each high-consequence area of the one or more high-consequence areas; the fourth prediction value is determined according to the historical failure rectification information and the pipeline design pressure of the target pipeline.

5. A device for acquiring a pipeline operating pressure, characterized in that The device comprises: a first determining module configured to determine at least one first prediction value according to the special weld density corresponding to the target pipeline in one or more high-consequence areas and the distance between the target pipeline and the high-density area of personnel in the one or more high-consequence areas, the high-density area of personnel referring to an area where the number of personnel is greater than a reference number; a second determining module configured to determine the pipeline operating pressure of the target pipeline according to the at least one first prediction value; wherein the first determining module comprises: The first determining unit is configured to determine, for any high-consequence area in the one or more high-consequence areas, a first fire radius, a first death radius and a first potential impact radius according to a pipeline design pressure and a pipeline diameter of the target pipeline; The second determining unit is configured to determine a first casualty level according to the first fire radius, the first death radius and the first potential impact radius, a distance between the target pipeline and a high-density personnel area in the any high-consequence area, and a correspondence between a casualty radius and a reference number of households and a casualty level, wherein a high casualty level indicates that a specific place I or a four-story or four-story-above building is generally concentrated within the 1 / 2 fire radius and the reference number of households is not less than 100, a higher casualty level indicates that the specific place I or the four-story or four-story-above building is generally concentrated within the fire radius and the reference number of households is not less than 100, a medium casualty level indicates that the specific place I or the four-story or four-story-above building is generally concentrated within the death radius and the reference number of households is not less than 100, and a lower casualty level indicates that the specific place I or the four-story or four-story-above building is generally concentrated within the potential impact radius and the reference number of households is not less than 100; The third determining unit is configured to determine a first pipeline risk level according to a risk matrix formed by the first casualty level and a special weld density corresponding to the target pipeline in the any high-consequence area and a mapping relationship between the special weld density level and the casualty level and a pipeline risk level, wherein the higher the casualty level and the higher the special weld density level, the higher the corresponding pipeline risk level, and the higher the special weld density level indicates the higher the special weld density; The fourth determining unit is configured to determine a first prediction value according to a pipeline diameter of the target pipeline and a distance between the target pipeline and the high-density personnel area in the any high-consequence area if the first pipeline risk level reaches a reference risk level, wherein the reference risk level indicates that the risk of running at the pipeline design pressure is high. The first prediction value is determined according to the pipeline diameter of the target pipeline and the distance between the target pipeline and the high-density personnel area in the any high-consequence area, including: setting the pipeline risk level of the target pipeline to be lower than the first pipeline risk level, determining a corresponding casualty level based on the pipeline risk level of the target pipeline and the risk matrix; determining a corresponding casualty radius and a target casualty radius smaller than the corresponding casualty radius based on the corresponding casualty level, the correspondence and the distance between the target pipeline and the high-density personnel area in the any high-consequence area; calculating a pipeline running pressure of the target pipeline based on the target casualty radius and the pipeline diameter of the target pipeline, and taking the pipeline running pressure of the target pipeline as the first prediction value.

6. The apparatus of claim 5, wherein, The third determining unit includes: The first determining sub-unit is configured to determine a first special weld opening density level according to a special weld opening density of the target pipeline in any high-consequence area; The first obtaining sub-unit is configured to obtain the risk matrix; The second obtaining sub-unit is configured to obtain, from the risk matrix, a pipeline risk level corresponding to the first casualty level and the first special weld opening density level as the first pipeline risk level.

7. The apparatus of claim 5, wherein, The first determining module further includes: The fifth determining unit is configured to determine a pipeline design pressure of the target pipeline as a first predicted value if the first pipeline risk level does not reach the reference risk level.

8. The apparatus of any of claims 5-7, wherein, The device further includes: The obtaining module is configured to obtain at least one of a second predicted value, a third predicted value and a fourth predicted value; The second determining module includes: The sixth determining unit is configured to determine, as a pipeline operating pressure of the target pipeline, the at least one first predicted value and a minimum value of the second predicted value, the third predicted value and the fourth predicted value; The second predicted value is determined according to a corresponding pipeline design coefficient and a pipeline wall thickness of the target pipeline in each first high-consequence area of one or more first high-consequence areas, the one or more first high-consequence areas being the corresponding high-consequence areas of the one or more high-consequence areas with upgraded regional levels; The third predicted value is determined according to corresponding defect weld opening information of the target pipeline in each high-consequence area of the one or more high-consequence areas; The fourth predicted value is determined according to historical failure rectification information and a pipeline design pressure of the target pipeline.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the steps of the method of any one of claims 1-4.

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