CN113640077A - Method and device for determining detection sample - Google Patents
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Abstract
The application discloses a method and a device for determining a detection sample, and belongs to the technical field of gas transmission pipelines. The method comprises the following steps: obtaining multiple types of gas transmission pipelines according to the obtained parameter values of the attribute parameters and the state parameters of each gas transmission pipeline, obtaining the parameter values of the preset internal corrosion parameters of each type of gas transmission pipeline, carrying out nonlinear fitting according to the occurrence times of each parameter value in each type of gas transmission pipeline, and determining the relation function between the distribution function relation parameter values and the occurrence times of the preset internal corrosion parameters of each type of gas transmission pipeline so as to determine the sample parameter values of the preset internal corrosion parameters of the multiple sample tubes. This application is through the sample pipe that this sample parameter value production corresponds, and such sample pipe is closer with actual gas transmission pipeline to the corruption condition in the simulation actual gas transmission pipeline for the defect relevance ratio of corroding the nondestructive test technique in detecting obtains more accurate defect relevance ratio.
Description
Technical Field
The application relates to the technical field of gas transmission pipelines, in particular to a method and a device for determining a detection sample.
Background
In the long-term use process of the natural gas pipeline, the inner wall of the natural gas pipeline is easy to corrode. In order to ensure the gas transmission safety of the gas transmission pipeline, the gas transmission pipeline needs to be detected in time by using an internal corrosion nondestructive detection technology. The detection rate of the internal corrosion nondestructive detection technology is an important detection parameter, and because the internal corrosion conditions of the gas transmission pipelines are different, a detection sample needs to be manufactured to detect the detection rate of the internal corrosion nondestructive detection technology.
In the related art, a steel test block provided with artificial internal corrosion is generally used as a test sample and used for testing the detection rate of the internal corrosion nondestructive testing technology.
The applicant has found that there are at least the following technical problems in the related art:
the steel test block used in the method does not simulate the actual internal corrosion condition of the gas transmission pipeline, so that the detection rate obtained by the internal corrosion nondestructive testing technology is inaccurate.
Disclosure of Invention
The embodiment of the application provides a method and a device for determining a detection sample, and can solve the problem that the detection rate obtained by an internal corrosion nondestructive detection technology is not accurate because the internal corrosion condition of an actual gas transmission pipeline is not simulated in the related technology. The technical scheme is as follows:
in one aspect, a method for determining a test sample is provided, the method comprising:
acquiring parameter values of attribute parameters and parameter values of state parameters of a plurality of gas transmission pipelines;
classifying the plurality of gas transmission pipelines based on the parameter values of the attribute parameters and the parameter values of the state parameters of each gas transmission pipeline to obtain a plurality of types of gas transmission pipelines;
for each type of gas transmission pipeline, acquiring a parameter value of a preset internal corrosion parameter of each type of gas transmission pipeline, performing nonlinear fitting based on the parameter value of the preset internal corrosion parameter and the occurrence frequency of each parameter value in the type of gas transmission pipeline, and determining a relation function between distribution function relation parameter values and the occurrence frequency of the preset internal corrosion parameter of the type of gas transmission pipeline;
determining sample parameter values of the preset internal corrosion parameters of a plurality of sample tubes based on a relation function between the parameter value of the preset internal corrosion parameter corresponding to each type and the occurrence frequency;
the sample parameter value of the preset internal corrosion parameter corresponding to each sample tube is used for producing the corresponding sample tube, and the sample tube is used for detecting the detection rate of the internal corrosion nondestructive testing technology.
In one possible implementation, the attribute parameters include: the material, pipe diameter and pipe wall thickness of a plurality of gas transmission pipelines.
In one possible implementation, the state parameters include: the temperature and the pressure of the plurality of gas transmission pipelines during operation, the gas transmission amount of each gas transmission pipeline and the transmission medium.
In one possible implementation, the preset internal corrosion parameters include: the internal corrosion length, the internal corrosion width, the peak depth and the clock orientation of the plurality of gas transmission pipelines.
In a possible implementation manner, the determining, based on a function of a relationship between a parameter value of the preset internal corrosion parameter and an occurrence frequency corresponding to each type, a sample parameter value of the preset internal corrosion parameter of a plurality of sample tubes includes:
determining sample tubes with the same number as the types in the multiple types, wherein each sample tube corresponds to one type, and each sample tube has a parameter value of an attribute parameter corresponding to the type;
determining a relation function between the parameter value and the occurrence frequency of the preset internal corrosion parameter corresponding to each sample tube, wherein the relation functions are the relation functions between the parameter value and the occurrence frequency of the preset internal corrosion parameter corresponding to one type;
and for each sample tube, determining the sample parameter value of the preset internal corrosion parameter of the sample tube based on the relation function of the parameter value and the occurrence frequency of each preset internal corrosion parameter corresponding to the sample tube.
In a possible implementation manner, the determining, based on a function of a relationship between a parameter value of each preset internal corrosion parameter corresponding to the sample tube and the occurrence number, a sample parameter value of the preset internal corrosion parameter of the sample tube includes:
and determining the parameter value with the maximum occurrence frequency corresponding to each preset internal corrosion parameter as the sample parameter value of each preset internal corrosion parameter corresponding to the sample tube based on the relation function between the parameter value and the occurrence frequency of each preset internal corrosion parameter corresponding to the sample tube.
In one aspect, an apparatus for determining a detection sample is provided, the apparatus comprising:
the acquisition module is used for acquiring parameter values of attribute parameters and parameter values of state parameters of the plurality of gas transmission pipelines;
the classification module is used for classifying the plurality of gas transmission pipelines based on the parameter value of the attribute parameter and the parameter value of the state parameter of each gas transmission pipeline to obtain a plurality of types of gas transmission pipelines;
the first determining module is used for acquiring a parameter value of a preset internal corrosion parameter of each type of gas transmission pipeline, performing nonlinear fitting on the basis of the parameter value of the preset internal corrosion parameter and the occurrence frequency of each parameter value in the type of gas transmission pipeline, and determining a relation function between a distribution function relation parameter value and the occurrence frequency of the preset internal corrosion parameter of the type of gas transmission pipeline;
the second determining module is used for determining sample parameter values of the preset internal corrosion parameters of the plurality of sample tubes based on a relation function between the parameter value of the preset internal corrosion parameter corresponding to each type and the occurrence frequency;
the sample parameter value of the preset internal corrosion parameter corresponding to each sample tube is used for producing the corresponding sample tube, and the sample tube is used for detecting the detection rate of the internal corrosion nondestructive testing technology.
In one possible implementation, the attribute parameters include: the material, pipe diameter and pipe wall thickness of a plurality of gas transmission pipelines.
In one possible implementation, the state parameters include: the temperature and the pressure of the plurality of gas transmission pipelines during operation, the gas transmission amount of each gas transmission pipeline and the transmission medium.
In one possible implementation, the preset internal corrosion parameters include: the internal corrosion length, the internal corrosion width, the peak depth and the clock orientation of the plurality of gas transmission pipelines.
In one possible implementation manner, the second determining module includes:
the first determining subunit is configured to determine sample tubes that are the same in number as the types in the multiple types, where each sample tube corresponds to one type, and each sample tube has a parameter value of an attribute parameter corresponding to the type;
the second determining subunit is used for determining a relationship function between the parameter value and the occurrence frequency of the preset internal corrosion parameter corresponding to each sample tube, and the relationship functions are the relationship functions between the parameter value and the occurrence frequency of the preset internal corrosion parameter corresponding to one type;
and the third determining subunit is used for determining the sample parameter value of each preset internal corrosion parameter of each sample tube based on the relation function between the parameter value of each preset internal corrosion parameter corresponding to the sample tube and the occurrence frequency.
In one possible implementation manner, the third determining subunit is configured to:
and determining the parameter value with the maximum occurrence frequency corresponding to each preset internal corrosion parameter as the sample parameter value of each preset internal corrosion parameter corresponding to the sample tube based on the relation function between the parameter value and the occurrence frequency of each preset internal corrosion parameter corresponding to the sample tube.
The technical scheme provided by the embodiment of the application has the following beneficial effects:
the method provided by the embodiment of the application obtains the parameter values of the attribute parameters and the parameter values of the state parameters of a plurality of gas transmission pipelines, based on the parameter values of the attribute parameters and the parameter values of the state parameters of each gas transmission pipeline, the method comprises the steps of classifying a plurality of gas transmission pipelines to obtain a plurality of types of gas transmission pipelines, obtaining a parameter value of a preset internal corrosion parameter of each type of each gas transmission pipeline, carrying out nonlinear fitting on the basis of the parameter value of the preset internal corrosion parameter and the occurrence frequency of each parameter value in each type of gas transmission pipeline, determining a relation function between a distribution function relation parameter value and the occurrence frequency of the preset internal corrosion parameter of each type of gas transmission pipeline, and determining sample parameter values of the preset internal corrosion parameters of a plurality of sample tubes on the basis of the relation function between the parameter value of the preset internal corrosion parameter corresponding to each type and the occurrence frequency. The sample parameter value that this application will obtain predetermine the internal corrosion parameter is used for producing the sample pipe that corresponds, and such sample pipe is closer with actual gas transmission pipeline, through the corrosion condition in the actual gas transmission pipeline of such sample pipe simulation to be used for detecting the defect relevance ratio of internal corrosion nondestructive test technique, can obtain more accurate defect relevance ratio.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a method for determining a test sample according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an apparatus for determining a detection sample according to an embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The method provided by the embodiment of the application can be applied to the technical field of gas transmission pipelines. In particular for determining the test sample. Common corrosion characteristics in gas pipelines include: etch length, etch width, peak depth, and clock orientation. And counting parameter values of attribute parameters and parameter values of state parameters of a large number of gas transmission pipelines, and classifying the gas transmission pipelines to obtain various types of gas transmission pipelines. For each type of gas transmission pipeline, carrying out nonlinear fitting according to the parameter value of a preset internal corrosion parameter and the occurrence frequency of each parameter value in the type of gas transmission pipeline, determining the distribution function relation parameter value of the preset internal corrosion parameter of the type of gas transmission pipeline and the relation function of the occurrence frequency, thereby determining the sample parameter values of the preset internal corrosion parameter of a plurality of sample tubes, producing corresponding sample tubes according to the obtained sample parameter values of the preset internal corrosion parameter, simulating the actual internal corrosion condition of the gas transmission pipeline through the sample tubes, and detecting the defect detection rate of the internal corrosion nondestructive detection technology.
Fig. 1 is a flowchart of a method for determining a detection sample according to an embodiment of the present application, and referring to fig. 1, the method includes:
101. and acquiring parameter values of attribute parameters and parameter values of state parameters of a plurality of gas transmission pipelines.
102. And classifying the plurality of gas transmission pipelines based on the parameter values of the attribute parameters and the parameter values of the state parameters of each gas transmission pipeline to obtain a plurality of types of gas transmission pipelines.
103. For each type of gas transmission pipeline, acquiring a parameter value of a preset internal corrosion parameter of each type of gas transmission pipeline, performing nonlinear fitting based on the parameter value of the preset internal corrosion parameter and the occurrence frequency of each parameter value in the type of gas transmission pipeline, and determining a relation function between the distribution function relation parameter value and the occurrence frequency of the preset internal corrosion parameter of the type of gas transmission pipeline.
104. And determining sample parameter values of the preset internal corrosion parameters of the plurality of sample tubes based on a relation function between the parameter value of the preset internal corrosion parameter corresponding to each type and the occurrence frequency.
The sample parameter value of the preset internal corrosion parameter corresponding to each sample tube is used for producing the corresponding sample tube, and the sample tube is used for detecting the detection rate of the internal corrosion nondestructive testing technology.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
the method provided by the embodiment of the application obtains the parameter values of the attribute parameters and the parameter values of the state parameters of a plurality of gas transmission pipelines, based on the parameter values of the attribute parameters and the parameter values of the state parameters of each gas transmission pipeline, the method comprises the steps of classifying a plurality of gas transmission pipelines to obtain a plurality of types of gas transmission pipelines, obtaining a parameter value of a preset internal corrosion parameter of each type of each gas transmission pipeline, carrying out nonlinear fitting on the basis of the parameter value of the preset internal corrosion parameter and the occurrence frequency of each parameter value in each type of gas transmission pipeline, determining a relation function between a distribution function relation parameter value and the occurrence frequency of the preset internal corrosion parameter of each type of gas transmission pipeline, and determining sample parameter values of the preset internal corrosion parameters of a plurality of sample tubes on the basis of the relation function between the parameter value of the preset internal corrosion parameter corresponding to each type and the occurrence frequency. The sample parameter value that this application will obtain predetermine the internal corrosion parameter is used for producing the sample pipe that corresponds, and such sample pipe is closer with actual gas transmission pipeline, through the corrosion condition in the actual gas transmission pipeline of such sample pipe simulation to be used for detecting the defect relevance ratio of internal corrosion nondestructive test technique, can obtain more accurate defect relevance ratio.
Fig. 1 is a flowchart of a method for determining a detection sample according to an embodiment of the present application, and referring to fig. 1, the method specifically includes:
101. and acquiring parameter values of attribute parameters and parameter values of state parameters of a plurality of gas transmission pipelines.
Wherein the attribute parameters include: the material, pipe diameter and pipe wall thickness of the plurality of gas transmission pipelines. The gas transmission pipeline can be made of various materials, such as L450 steel, L485 steel, L320 steel, L360 steel, 16Mn steel, L245 steel, 20# steel and the like. The state parameters include: the temperature and the pressure of the plurality of gas transmission pipelines during operation, the gas transmission amount of each gas transmission pipeline and the transmission medium. The transport medium of the gas line is generally examined whether the transport medium contains sulfur or water, and according to this principle, the transport medium of the gas line can be divided into four types, for example, a sulfur-containing dry gas medium, a sulfur-containing wet gas medium, a sulfur-free dry gas medium, and a sulfur-free wet gas medium.
It should be noted that the temperature, pressure and gas transmission amount of the gas transmission pipeline during operation are all ranges satisfied by a plurality of values respectively measured within a preset time.
102. And classifying the plurality of gas transmission pipelines based on the parameter values of the attribute parameters and the parameter values of the state parameters of each gas transmission pipeline to obtain a plurality of types of gas transmission pipelines.
According to the embodiment of the application, the gas transmission pipelines can be classified according to the parameter values of the attribute parameters of each gas transmission pipeline, then the gas transmission pipelines are classified again according to the parameter values of the state parameters of each gas transmission pipeline, the gas transmission pipelines can be classified again according to the parameter values of the state parameters of each gas transmission pipeline, and then the gas transmission pipelines are classified again according to the parameter values of the attribute parameters of each gas transmission pipeline.
For example, after parameter values of attribute parameters and parameter values of state parameters of a plurality of gas transmission pipelines are obtained, the gas transmission pipelines may be firstly classified once according to the material, the pipe diameter and the pipe wall thickness of each gas transmission pipeline, so as to obtain a class of gas transmission pipelines with the same material, the similar pipe diameter and the similar pipe wall thickness. Then, in the gas transmission pipelines, the gas transmission pipelines are classified secondarily according to the temperature and the pressure of the gas transmission pipelines during operation, specifically, the gas transmission pipelines are classified according to high temperature, normal temperature and low temperature to obtain the gas transmission pipelines of each temperature type, then the gas transmission pipelines of each pressure type are classified according to ultrahigh pressure, medium-high pressure and low pressure to obtain the gas transmission pipelines of each pressure type, and then the gas transmission pipelines are classified according to each range of preset gas transmission amount. For the running gas pipeline, if the values of the measured temperature in the preset time all satisfy more than 20 ℃ (unit: centigrade), the pipeline is called high temperature, if the temperature is equal to 20 ℃, the pipeline is called normal temperature, and if the values all satisfy less than 20 ℃, the pipeline is called low temperature. If the values of the measured pressures in the preset time are all more than 6.4MPa (unit: MPa), the pressure is called ultra-high pressure, if the values are within the range of 0.1-6.4MPa, the pressure is called medium-high pressure, and if the values are all less than 0.1MPa, the pressure is called low pressure.
It should be noted that, for the gas transmission pipeline of special transmission medium which is easy to induce internal corrosion, for example, the gas transmission pipeline containing sulfur in the transmission medium, should be further classified. Classifying the sulfur-containing conveying medium according to the content of hydrogen sulfide in the conveying medium, wherein if the content of hydrogen sulfide in the conveying medium is 6-20 mg/m3(unit: milligram per cubic meter) range, low sulfur content, if the hydrogen sulfide content in the conveying medium is 20-350 mg/m3In the range, high sulfur is indicated, if the hydrogen sulfide content of the transport medium is greater than 350mg/m3It is called extra high sulfur content.
103. For each type of gas transmission pipeline, acquiring a parameter value of a preset internal corrosion parameter of each type of gas transmission pipeline, performing nonlinear fitting based on the parameter value of the preset internal corrosion parameter and the occurrence frequency of each parameter value in the type of gas transmission pipeline, and determining a relation function between the distribution function relation parameter value and the occurrence frequency of the preset internal corrosion parameter of the type of gas transmission pipeline.
Wherein the predetermined internal corrosion parameters include: the internal corrosion length, the internal corrosion width, the peak depth and the clock orientation of the plurality of gas transmission pipelines. The peak depth refers to the maximum corrosion depth of corrosion in the gas transmission pipeline, and the clock orientation refers to the specific orientation of the corrosion of corrosion in the gas transmission pipeline on the cross section of the gas transmission pipeline.
In implementation, for each type of gas transmission pipeline, obtaining a parameter value of the internal corrosion length of each gas transmission pipeline of the type, performing nonlinear fitting according to the parameter value of the internal corrosion length and the occurrence frequency of each parameter value in the type of gas transmission pipeline, and determining that a relation function between a distribution function relation parameter value and the occurrence frequency of the internal corrosion length of the type of gas transmission pipeline satisfies a log normal distribution rule, for example, the relation function may be formula (1):
in the formula, y1The frequency, x, of corrosion length occurring in gas pipelines of this type1Is a parameter value of the corrosion length of the corrosion in the gas pipeline of the type.
In implementation, for each type of gas transmission pipeline, obtaining a parameter value of the internal corrosion width of each gas transmission pipeline of the type, performing nonlinear fitting according to the parameter value of the internal corrosion width and the occurrence frequency of each parameter value in the type of gas transmission pipeline, and determining that a relation function between a distribution function relation parameter value and the occurrence frequency of the internal corrosion width of the type of gas transmission pipeline satisfies a log normal distribution rule, where the relation function may be, for example, formula (2):
in the formula, y2Frequency, x, of occurrence in gas pipelines of this type for the width of corrosion in gas pipelines2Is a parameter value of the corrosion width of the corrosion in the gas pipeline of the type.
In implementation, for each type of gas transmission pipeline, obtaining a parameter value of the peak depth of each gas transmission pipeline of the type, performing nonlinear fitting through function drawing software according to the parameter value of the peak depth and the occurrence frequency of each parameter value in the type of gas transmission pipeline, and determining that a relation function between a distribution function relation parameter value and the occurrence frequency of the peak depth ratio of the type of gas transmission pipeline meets a FreundlichEx (function distribution model) distribution rule, wherein the peak depth ratio refers to the proportion of the number of the peak depths in each range in the number of the peak depths in a preset range. For example, the relationship function may be equation (3):
in the formula, y3For the frequency, x, of the occurrence of the peak depth of corrosion in gas pipelines of this type3The peak depth ratio of the corrosion in the gas pipeline is the parameter value.
In implementation, for each type of gas transmission pipeline, obtaining a parameter value of a clock position of each gas transmission pipeline of the type, performing nonlinear fitting according to the parameter value of the clock position and the occurrence frequency of each parameter value in the type of gas transmission pipeline, and determining that a relation function between a distribution function relation parameter value of the clock position of the type of gas transmission pipeline and the occurrence frequency satisfies a normal distribution rule, for example, the relation function may be formula (4):
in the formula, y4Frequency, x, of occurrence of clock orientation in gas transmission lines of this type for corrosion in the gas transmission line4The parameter value of the clock orientation of the corrosion in the gas transmission pipeline of the type is shown.
104. And determining sample parameter values of the preset internal corrosion parameters of the plurality of sample tubes based on a relation function between the parameter value of the preset internal corrosion parameter corresponding to each type and the occurrence frequency.
The sample parameter value of the preset internal corrosion parameter corresponding to each sample tube is used for producing the corresponding sample tube, and the sample tube is used for detecting the detection rate of the internal corrosion nondestructive testing technology.
In implementation, sample tubes with the same number as the types in the multiple types are determined, wherein each sample tube corresponds to one type, each sample tube has a parameter value of an attribute parameter corresponding to the type, a relation function between the parameter value and the occurrence frequency of the preset internal corrosion parameter corresponding to each sample tube is determined, the relation function between the parameter value and the occurrence frequency of the preset internal corrosion parameter corresponding to one type is determined, and for each sample tube, a sample parameter value of the preset internal corrosion parameter of the sample tube is determined based on the relation function between the parameter value and the occurrence frequency of the preset internal corrosion parameter corresponding to the sample tube.
In a possible implementation manner, the process of determining the sample parameter value of each preset internal corrosion parameter of the sample tube based on the function of the relationship between the parameter value and the occurrence frequency of each preset internal corrosion parameter corresponding to the sample tube may be: and determining the parameter value with the maximum occurrence frequency corresponding to each preset internal corrosion parameter as the sample parameter value of each preset internal corrosion parameter corresponding to the sample tube based on the relation function between the parameter value and the occurrence frequency of each preset internal corrosion parameter corresponding to the sample tube.
For example, the gas transmission pipelines are classified in step 102 to obtain 10 types of gas transmission pipelines, and then 10 sample tubes can be manufactured, where each sample tube corresponds to one type of gas transmission pipeline and the corresponding type of material, diameter, and wall thickness parameter values. For each sample tube, according to the relationship functions (1), (2), (3) and (4) obtained in step 103, determining the parameter values with the largest occurrence times respectively corresponding to the internal corrosion length, the internal corrosion width, the peak depth and the clock orientation, and then taking the parameter values with the largest occurrence times respectively corresponding to the internal corrosion length, the internal corrosion width, the peak depth and the clock orientation as the sample parameter values of the internal corrosion length, the internal corrosion width, the peak depth and the clock orientation corresponding to the sample tube.
The method provided by the embodiment of the application obtains the parameter values of the attribute parameters and the parameter values of the state parameters of a plurality of gas transmission pipelines, based on the parameter values of the attribute parameters and the parameter values of the state parameters of each gas transmission pipeline, the method comprises the steps of classifying a plurality of gas transmission pipelines to obtain a plurality of types of gas transmission pipelines, obtaining a parameter value of a preset internal corrosion parameter of each type of each gas transmission pipeline, carrying out nonlinear fitting on the basis of the parameter value of the preset internal corrosion parameter and the occurrence frequency of each parameter value in each type of gas transmission pipeline, determining a relation function between a distribution function relation parameter value and the occurrence frequency of the preset internal corrosion parameter of each type of gas transmission pipeline, and determining sample parameter values of the preset internal corrosion parameters of a plurality of sample tubes on the basis of the relation function between the parameter value of the preset internal corrosion parameter corresponding to each type and the occurrence frequency. The sample parameter value that this application will obtain predetermine the internal corrosion parameter is used for producing the sample pipe that corresponds, and such sample pipe is closer with actual gas transmission pipeline, through the corrosion condition in the actual gas transmission pipeline of such sample pipe simulation to be used for detecting the defect relevance ratio of internal corrosion nondestructive test technique, can obtain more accurate defect relevance ratio.
All the above optional technical solutions may be combined arbitrarily to form optional embodiments of the present application, and are not described herein again.
Fig. 2 is a schematic structural diagram of an apparatus for determining a detection sample according to an embodiment of the present disclosure. Referring to fig. 2, the apparatus includes:
an obtaining module 201, configured to obtain parameter values of attribute parameters and parameter values of state parameters of a plurality of gas transmission pipelines;
the classification module 202 is configured to classify the plurality of gas transmission pipelines based on the parameter value of the attribute parameter and the parameter value of the state parameter of each gas transmission pipeline, so as to obtain a plurality of types of gas transmission pipelines;
the first determining module 203 is configured to, for each type of gas transmission pipeline, obtain a parameter value of a preset internal corrosion parameter of each gas transmission pipeline of the type, perform nonlinear fitting based on the parameter value of the preset internal corrosion parameter and the occurrence frequency of each parameter value in the type of gas transmission pipeline, and determine a relationship function between a distribution function relationship parameter value and the occurrence frequency of the preset internal corrosion parameter of the type of gas transmission pipeline;
a second determining module 204, configured to determine sample parameter values of the preset internal corrosion parameters of the multiple sample tubes based on a function of a relationship between the parameter value of the preset internal corrosion parameter corresponding to each type and the occurrence frequency;
the sample parameter value of the preset internal corrosion parameter corresponding to each sample tube is used for producing the corresponding sample tube, and the sample tube is used for detecting the detection rate of the internal corrosion nondestructive testing technology.
In one possible implementation, the attribute parameters include: the material, pipe diameter and pipe wall thickness of the plurality of gas transmission pipelines.
In one possible implementation, the state parameter includes: the temperature and the pressure of the plurality of gas transmission pipelines during operation, the gas transmission amount of each gas transmission pipeline and the transmission medium.
In one possible implementation, the predetermined intrinsic corrosion parameter includes: the internal corrosion length, the internal corrosion width, the peak depth and the clock orientation of the plurality of gas transmission pipelines.
In one possible implementation, the second determining module 204 includes:
the first determining subunit is used for determining sample tubes with the same number as the types in the multiple types, wherein each sample tube corresponds to one type, and each sample tube has a parameter value of an attribute parameter corresponding to the type;
the second determining subunit is used for determining a relation function between the parameter value and the occurrence frequency of the preset internal corrosion parameter corresponding to each sample tube, and the relation functions are respectively the relation functions between the parameter value and the occurrence frequency of the preset internal corrosion parameter corresponding to one type;
and the third determining subunit is used for determining the sample parameter value of each preset internal corrosion parameter of each sample tube based on the relation function between the parameter value of each preset internal corrosion parameter corresponding to the sample tube and the occurrence frequency.
In one possible implementation, the third determining subunit is configured to:
and determining the parameter value with the maximum occurrence frequency corresponding to each preset internal corrosion parameter as the sample parameter value of each preset internal corrosion parameter corresponding to the sample tube based on the relation function between the parameter value and the occurrence frequency of each preset internal corrosion parameter corresponding to the sample tube.
The device provided by the embodiment of the application obtains the parameter values of the attribute parameters and the parameter values of the state parameters of a plurality of gas transmission pipelines, and based on the parameter values of the attribute parameters and the parameter values of the state parameters of each gas transmission pipeline, the method comprises the steps of classifying a plurality of gas transmission pipelines to obtain a plurality of types of gas transmission pipelines, obtaining a parameter value of a preset internal corrosion parameter of each type of each gas transmission pipeline, carrying out nonlinear fitting on the basis of the parameter value of the preset internal corrosion parameter and the occurrence frequency of each parameter value in each type of gas transmission pipeline, determining a relation function between a distribution function relation parameter value and the occurrence frequency of the preset internal corrosion parameter of each type of gas transmission pipeline, and determining sample parameter values of the preset internal corrosion parameters of a plurality of sample tubes on the basis of the relation function between the parameter value of the preset internal corrosion parameter corresponding to each type and the occurrence frequency. The sample parameter value that this application will obtain predetermine the internal corrosion parameter is used for producing the sample pipe that corresponds, and such sample pipe is closer with actual gas transmission pipeline, through the corrosion condition in the actual gas transmission pipeline of such sample pipe simulation to be used for detecting the defect relevance ratio of internal corrosion nondestructive test technique, can obtain more accurate defect relevance ratio.
It should be noted that: the apparatus for determining a detection sample provided in the foregoing embodiment is only illustrated by dividing the functional modules when triggering an intelligent network service, and in practical applications, the function distribution may 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 apparatus for determining a detection sample and the method for determining a detection sample provided in the above embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments and are not described herein again.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A method of determining a test sample, the method comprising:
acquiring parameter values of attribute parameters and parameter values of state parameters of a plurality of gas transmission pipelines;
classifying the plurality of gas transmission pipelines based on the parameter values of the attribute parameters and the parameter values of the state parameters of each gas transmission pipeline to obtain a plurality of types of gas transmission pipelines;
for each type of gas transmission pipeline, acquiring a parameter value of a preset internal corrosion parameter of each type of gas transmission pipeline, performing nonlinear fitting based on the parameter value of the preset internal corrosion parameter and the occurrence frequency of each parameter value in the type of gas transmission pipeline, and determining a relation function between distribution function relation parameter values and the occurrence frequency of the preset internal corrosion parameter of the type of gas transmission pipeline;
determining sample parameter values of the preset internal corrosion parameters of a plurality of sample tubes based on a relation function between the parameter value of the preset internal corrosion parameter corresponding to each type and the occurrence frequency;
the sample parameter value of the preset internal corrosion parameter corresponding to each sample tube is used for producing the corresponding sample tube, and the sample tube is used for detecting the detection rate of the internal corrosion nondestructive testing technology.
2. The method of claim 1, wherein the attribute parameters comprise: the material, pipe diameter and pipe wall thickness of a plurality of gas transmission pipelines.
3. The method of claim 1, wherein the state parameters comprise: the temperature and the pressure of the plurality of gas transmission pipelines during operation, the gas transmission amount of each gas transmission pipeline and the transmission medium.
4. The method of claim 1, wherein the predetermined internal corrosion parameters comprise: the internal corrosion length, the internal corrosion width, the peak depth and the clock orientation of the plurality of gas transmission pipelines.
5. The method according to claim 1, wherein the determining the sample parameter values of the preset internal corrosion parameters of a plurality of sample tubes based on the function of the relationship between the parameter value of the preset internal corrosion parameter corresponding to each type and the occurrence frequency comprises:
determining sample tubes with the same number as the types in the multiple types, wherein each sample tube corresponds to one type, and each sample tube has a parameter value of an attribute parameter corresponding to the type;
determining a relation function between the parameter value and the occurrence frequency of the preset internal corrosion parameter corresponding to each sample tube, wherein the relation functions are the relation functions between the parameter value and the occurrence frequency of the preset internal corrosion parameter corresponding to one type;
and for each sample tube, determining the sample parameter value of the preset internal corrosion parameter of the sample tube based on the relation function of the parameter value and the occurrence frequency of each preset internal corrosion parameter corresponding to the sample tube.
6. The method according to claim 5, wherein the determining the sample parameter value of the preset internal corrosion parameter of the sample tube based on the function of the relationship between the parameter value and the occurrence frequency of each preset internal corrosion parameter corresponding to the sample tube comprises:
and determining the parameter value with the maximum occurrence frequency corresponding to each preset internal corrosion parameter as the sample parameter value of each preset internal corrosion parameter corresponding to the sample tube based on the relation function between the parameter value and the occurrence frequency of each preset internal corrosion parameter corresponding to the sample tube.
7. An apparatus for determining a test sample, the apparatus comprising:
the acquisition module is used for acquiring parameter values of attribute parameters and parameter values of state parameters of the plurality of gas transmission pipelines;
the classification module is used for classifying the plurality of gas transmission pipelines based on the parameter value of the attribute parameter and the parameter value of the state parameter of each gas transmission pipeline to obtain a plurality of types of gas transmission pipelines;
the first determining module is used for acquiring a parameter value of a preset internal corrosion parameter of each type of gas transmission pipeline, performing nonlinear fitting on the basis of the parameter value of the preset internal corrosion parameter and the occurrence frequency of each parameter value in the type of gas transmission pipeline, and determining a relation function between a distribution function relation parameter value and the occurrence frequency of the preset internal corrosion parameter of the type of gas transmission pipeline;
the second determining module is used for determining sample parameter values of the preset internal corrosion parameters of the plurality of sample tubes based on a relation function between the parameter value of the preset internal corrosion parameter corresponding to each type and the occurrence frequency;
the sample parameter value of the preset internal corrosion parameter corresponding to each sample tube is used for producing the corresponding sample tube, and the sample tube is used for detecting the detection rate of the internal corrosion nondestructive testing technology.
8. The apparatus of claim 7, wherein the attribute parameters comprise: the material, pipe diameter and pipe wall thickness of a plurality of gas transmission pipelines.
9. The apparatus of claim 7, wherein the status parameters comprise: the temperature and the pressure of the plurality of gas transmission pipelines during operation, the gas transmission amount of each gas transmission pipeline and the transmission medium.
10. The apparatus of claim 7, wherein the predetermined internal corrosion parameters comprise: the internal corrosion length, the internal corrosion width, the peak depth and the clock orientation of the plurality of gas transmission pipelines.
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