CN105320994B - A kind of method and apparatus of oil-gas pipeline safety assessment - Google Patents
A kind of method and apparatus of oil-gas pipeline safety assessment Download PDFInfo
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Abstract
The invention discloses a kind of method and apparatus of oil-gas pipeline safety assessment, belong to security evaluation field.Method includes: to carry out weak magnetic detection to each measurement point in multiple measurement points on the first oil-gas pipeline, the measurement point that stress is greater than default value is determined as stress concentration point, and the first oil-gas pipeline is divided into multiple second oil-gas pipelines according to stress concentration point；Thickness measuring is scanned to the second oil-gas pipeline of each of multiple second oil-gas pipelines, minimum thickness of the minimum thickness as the first oil-gas pipeline is selected from the thickness of each second oil-gas pipeline；The safe-working pressure of the first oil-gas pipeline is calculated according to the minimum thickness of the first oil-gas pipeline；Security evaluation is carried out to the first oil-gas pipeline according to the safe-working pressure of the first oil-gas pipeline.The device includes: the first determining module, detection module, the second determining module, thickness measuring module, selection module, computing module and evaluation module.The present invention, which can be realized potentially to damage oil-gas pipeline, carries out security evaluation.
Description
Technical field
The present invention relates to security evaluation field, in particular to a kind of method and apparatus of oil-gas pipeline safety assessment.
Background technique
With the rapid development of world economy, growing day by day to the demand of petroleum gas, the most as petroleum gas
Economic and safety transmission mode, pipeline transmission are rapidly progressed.However, oil-gas pipeline during use may be because of
The factors such as burn into mechanical loss, geological disaster cause various damages, security evaluation are carried out to oil-gas pipeline, for ensureing equipment
Reliability service and personal safety are of great significance.
The prior art provides a kind of method of oil-gas pipeline safety assessment, can be with are as follows: according in the material of oil-gas pipeline
The variation of heat caused by portion's textural anomaly or defect, sound, light, electricity, magnetic etc., to judge that whether there is for oil-gas pipeline damages.
For example, shooting using ray method to oil-gas pipeline, and check oil-gas pipeline with the presence or absence of damage according to shooting result.Work as oil
When the presence damage of feed channel, determining oil-gas pipeline, there are safety problems；Inside or table when a variety of materials of oil-gas pipeline
Face is there is no when damage, and determining oil-gas pipeline, there is no safety problems.
In the implementation of the present invention, the inventor finds that the existing technology has at least the following problems:
Since the macroscopic damage that safety evaluation method in the prior art can only be showed for oil-gas pipeline is pacified
Full assessment, can not potentially damage oil-gas pipeline and carry out security evaluation, so that explanation is in the prior art based on conventional lossless
The safety evaluation method of detection technique has limitation.
Summary of the invention
In order to solve the problem of the prior art, the present invention provides the methods and dress of a kind of assessment of oil-gas pipeline safety
It sets.Technical solution is as follows:
On the one hand, the present invention provides a kind of methods of oil-gas pipeline safety assessment, which comprises
Determine that multiple measurement points on the first oil-gas pipeline, the multiple measurement point are evenly distributed on first Oil/Gas Pipe
On road；
Weak magnetic detection is carried out to each measurement point in the multiple measurement point, obtains that each measurement point is corresponding to answer
Power；
The measurement point that stress is greater than default value is determined as stress concentration point, and will be described according to the stress concentration point
First oil-gas pipeline is divided into multiple second oil-gas pipelines；
Thickness measuring is scanned to the second oil-gas pipeline of each of the multiple second oil-gas pipeline, obtains described each
The thickness of two oil-gas pipelines；
Minimum of the minimum thickness as first oil-gas pipeline is selected from the thickness of each second oil-gas pipeline
Thickness；
The safe-working pressure of first oil-gas pipeline is calculated according to the minimum thickness of first oil-gas pipeline；
Security evaluation is carried out to first oil-gas pipeline according to the safe-working pressure of first oil-gas pipeline.
Preferably, the minimum thickness according to first oil-gas pipeline calculates the safe work of first oil-gas pipeline
Make pressure, comprising:
Obtain the corresponding standard thickness of first oil-gas pipeline, normal intensity design ratio, standard weld coefficient and mark
Quasi- yield strength；
The ratio for calculating the minimum thickness and the standard thickness, obtains thickness parameter；
According to the thickness parameter, the normal intensity design ratio, the standard weld coefficient and the standard yield
The corresponding Intensity Design coefficient of presently described first oil-gas pipeline of Strength co-mputation, weld joint efficiency and yield strength；
The product of the corresponding Intensity Design coefficient of presently described first oil-gas pipeline, weld joint efficiency and yield strength is calculated,
Obtain the maximum stress that first oil-gas pipeline is able to bear；
Calculate the maximum stress that first oil-gas pipeline is able to bear, the product of the minimum thickness and numerical value 2；
The ratio for calculating the overall diameter of the product and first oil-gas pipeline, obtains the safe work of the oil-gas pipeline
Make pressure.
Preferably, the minimum thickness according to first oil-gas pipeline calculates the safe work of first oil-gas pipeline
Make pressure, comprising:
Obtain the corresponding guideline life of first oil-gas pipeline, normal intensity designing system, standard weld coefficient
With standard yield intensity and the currently used time limit；
The ratio for calculating the currently used time limit and the guideline life, obtains time limit parameter；
According to the time limit parameter, the normal intensity design ratio, the standard weld coefficient and the standard yield
The corresponding Intensity Design coefficient of presently described first oil-gas pipeline of Strength co-mputation, weld joint efficiency and yield strength；
The product of the corresponding Intensity Design coefficient of presently described first oil-gas pipeline, weld joint efficiency and yield strength is calculated,
Obtain the maximum stress that first oil-gas pipeline is able to bear；
Calculate the maximum stress that first oil-gas pipeline is able to bear, the product of the minimum thickness and numerical value 2；
The ratio for calculating the overall diameter of the product and first oil-gas pipeline, obtains the safe work of the oil-gas pipeline
Make pressure.
Preferably, described according to the time limit parameter, the normal intensity design ratio, the standard weld coefficient and institute
The corresponding Intensity Design coefficient of presently described first oil-gas pipeline of standard yield Strength co-mputation, weld joint efficiency and yield strength are stated,
Include:
The location of described first oil-gas pipeline is obtained, according to the position acquisition environmental parameter；
According to the environmental parameter, the time limit parameter, the normal intensity design ratio, the standard weld coefficient and
The corresponding Intensity Design coefficient of presently described first oil-gas pipeline of standard yield Strength co-mputation, weld joint efficiency and surrender are strong
Degree.
Preferably, multiple measurement points on first oil-gas pipeline of determination, comprising:
Multiple circumference, the distance between the every two adjacent circumferential in the multiple circumference are determined on the first oil-gas pipeline
It is equal；
It is determined on each circumference in the multiple circumference and is spaced equal multiple measurement points, and the every two is adjacent
The line and first oil between each measurement point in the measurement point and another circumference on a circumference in circumference
The central axis of feed channel is not parallel.
On the other hand, the present invention provides a kind of device of oil-gas pipeline safety assessment, described device includes:
First determining module, for determining that multiple measurement points on the first oil-gas pipeline, the multiple measurement point are uniformly divided
Cloth is on first oil-gas pipeline；
Detection module obtains described each for carrying out weak magnetic detection to each measurement point in the multiple measurement point
The corresponding stress of measurement point；
Second determining module, the measurement point for stress to be greater than default value are determined as stress concentration point, and according to institute
It states stress concentration point and first oil-gas pipeline is divided into multiple second oil-gas pipelines；
Thickness measuring module, for being scanned thickness measuring to the second oil-gas pipeline of each of the multiple second oil-gas pipeline,
Obtain the thickness of each second oil-gas pipeline；
Module is chosen, for selecting minimum thickness from the thickness of each second oil-gas pipeline as first oil
The minimum thickness of feed channel；
Computing module, for calculating the safety of first oil-gas pipeline according to the minimum thickness of first oil-gas pipeline
Operating pressure；
Evaluation module, for being carried out according to the safe-working pressure of first oil-gas pipeline to first oil-gas pipeline
Security evaluation.
Preferably, the computing module, comprising:
First acquisition unit, for obtain the corresponding standard thickness of first oil-gas pipeline, normal intensity design ratio,
Standard weld coefficient and standard yield intensity；
First computing unit obtains thickness parameter for calculating the ratio of the minimum thickness and the standard thickness；
Second computing unit, for according to the thickness parameter, the normal intensity design ratio, the standard weld system
Number Intensity Design coefficient corresponding with presently described first oil-gas pipeline of the standard yield Strength co-mputation, weld joint efficiency and surrender
Intensity；
Third computing unit, for calculating the corresponding Intensity Design coefficient of presently described first oil-gas pipeline, weld joint efficiency
With the product of yield strength, the maximum stress that first oil-gas pipeline is able to bear is obtained；
4th computing unit, for calculating maximum stress, the minimum thickness that first oil-gas pipeline is able to bear
With the product of numerical value 2；
5th computing unit, the ratio of the overall diameter for calculating the product and first oil-gas pipeline, obtains institute
State the safe-working pressure of oil-gas pipeline.
Preferably, the computing module, comprising:
Second acquisition unit, for obtaining the corresponding guideline life of first oil-gas pipeline, normal intensity design
System, standard weld coefficient and standard yield intensity and the currently used time limit；
6th computing unit obtains year for calculating the ratio of the currently used time limit and the guideline life
Limit parameter；
7th computing unit, for according to the time limit parameter, the normal intensity design ratio, the standard weld system
Number Intensity Design coefficient corresponding with presently described first oil-gas pipeline of the standard yield Strength co-mputation, weld joint efficiency and surrender
Intensity；
8th computing unit, for calculating the corresponding Intensity Design coefficient of presently described first oil-gas pipeline, weld joint efficiency
With the product of yield strength, the maximum stress that first oil-gas pipeline is able to bear is obtained；
9th computing unit, for calculating maximum stress, the minimum thickness that first oil-gas pipeline is able to bear
With the product of numerical value 2；
Tenth computing unit, the ratio of the overall diameter for calculating the product and first oil-gas pipeline, obtains institute
State the safe-working pressure of oil-gas pipeline.
Preferably, the 7th computing unit, comprising:
Subelement is obtained, for obtaining the location of described first oil-gas pipeline, is joined according to the position acquisition environment
Number；
Computation subunit, for according to the environmental parameter, the time limit parameter, the normal intensity design ratio, institute
State standard weld coefficient and the corresponding Intensity Design coefficient of presently described first oil-gas pipeline of the standard yield Strength co-mputation, weldering
Stitch coefficient and yield strength.
Preferably, first determining module, comprising:
First determination unit, the every two for determining multiple circumference on the first oil-gas pipeline, in the multiple circumference
The distance between adjacent circumferential is equal；
Second determination unit determines on each circumference in the multiple circumference and is spaced equal multiple measurements
Point, and between each measurement point in the measurement point and another circumference on a circumference in the every two adjacent circumferential
Line is all not parallel with the central axis of first oil-gas pipeline.
In embodiments of the present invention, determine that multiple measurement points on the first oil-gas pipeline, multiple measurement points are evenly distributed on
On first oil-gas pipeline；Weak magnetic detection is carried out to each measurement point in multiple measurement points, obtains that each measurement point is corresponding to answer
Power；The measurement point that stress is greater than default value is determined as stress concentration point, and according to stress concentration point by the first oil-gas pipeline
It is divided into multiple second oil-gas pipelines；Thickness measuring is scanned to the second oil-gas pipeline of each of multiple second oil-gas pipelines, is obtained
The thickness of each second oil-gas pipeline；Minimum thickness is selected from the thickness of each second oil-gas pipeline as the first oil-gas pipeline
Minimum thickness；The safe-working pressure of the first oil-gas pipeline is calculated according to the minimum thickness of the first oil-gas pipeline；According to first
The safe-working pressure of oil-gas pipeline carries out security evaluation to the first oil-gas pipeline, potential to oil-gas pipeline so as to realize
Damage carries out security evaluation, also, this method is safe and reliable, is suitable for the security evaluation of long-distance oil & gas pipeline.
Detailed description of the invention
Fig. 1 is a kind of method flow diagram for oil-gas pipeline safety assessment that the embodiment of the present invention 1 provides；
Fig. 2-1 is a kind of method flow diagram for oil-gas pipeline safety assessment that the embodiment of the present invention 2 provides；
Fig. 2-2 is the schematic diagram of multiple measurement points on the first oil-gas pipeline of determination that the embodiment of the present invention 2 provides；
Fig. 3 is a kind of apparatus structure schematic diagram for oil-gas pipeline safety assessment that the embodiment of the present invention 3 provides.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment 1
The embodiment of the invention provides a kind of methods of oil-gas pipeline safety assessment.Referring to Fig. 1, wherein this method comprises:
Step 101: determining that multiple measurement points on the first oil-gas pipeline, multiple measurement points are evenly distributed on the first Oil/Gas Pipe
On road；
Step 102: weak magnetic detection being carried out to each measurement point in multiple measurement points, obtains that each measurement point is corresponding to answer
Power；
Step 103: the measurement point that stress is greater than default value being determined as stress concentration point, and will according to stress concentration point
First oil-gas pipeline is divided into multiple second oil-gas pipelines；
Step 104: thickness measuring being scanned to the second oil-gas pipeline of each of multiple second oil-gas pipelines, obtains each
The thickness of two oil-gas pipelines；
Step 105: minimum of the minimum thickness as the first oil-gas pipeline is selected from the thickness of each second oil-gas pipeline
Thickness；
Step 106: the safe-working pressure of the first oil-gas pipeline is calculated according to the minimum thickness of the first oil-gas pipeline；
Step 107: security evaluation is carried out to the first oil-gas pipeline according to the safe-working pressure of the first oil-gas pipeline.
In embodiments of the present invention, determine that multiple measurement points on the first oil-gas pipeline, multiple measurement points are evenly distributed on
On first oil-gas pipeline；Weak magnetic detection is carried out to each measurement point in multiple measurement points, obtains that each measurement point is corresponding to answer
Power；The measurement point that stress is greater than default value is determined as stress concentration point, and according to stress concentration point by the first oil-gas pipeline
It is divided into multiple second oil-gas pipelines；Thickness measuring is scanned to the second oil-gas pipeline of each of multiple second oil-gas pipelines, is obtained
The thickness of each second oil-gas pipeline；Minimum thickness is selected from the thickness of each second oil-gas pipeline as the first oil-gas pipeline
Minimum thickness；The safe-working pressure of the first oil-gas pipeline is calculated according to the minimum thickness of the first oil-gas pipeline；According to first
The safe-working pressure of oil-gas pipeline carries out security evaluation to the first oil-gas pipeline, potential to oil-gas pipeline so as to realize
Damage carries out security evaluation, also, this method is safe and reliable, is suitable for the security evaluation of long-distance oil & gas pipeline.
Embodiment 2
The embodiment of the invention provides a kind of methods of oil-gas pipeline safety assessment.Referring to fig. 2-1, wherein this method packet
It includes:
Step 201: determining that multiple measurement points on the first oil-gas pipeline, multiple measurement points are evenly distributed on the first Oil/Gas Pipe
On road；
First oil-gas pipeline is that oil-gas pipeline to be assessed exists first when carrying out security evaluation to the first oil-gas pipeline
Multiple measurement points are determined on first oil-gas pipeline, and multiple measurement points are detected.Determine multiple surveys on the first oil-gas pipeline
Amount point can be realized by following steps (1) and (2), comprising:
(1): multiple circumference, the distance between the every two adjacent circumferential in multiple circumference are determined on the first oil-gas pipeline
It is equal；
Specifically, sample devices determines sampling circumference, and terminal is connected with sample devices, and terminal control sample devices is according to really
Fixed sampling circumference determines multiple circumference on the first oil-gas pipeline.
(2): being determined on each circumference in multiple circumference and be spaced equal multiple measurement points, and every two adjacent circumferential
In circumference on measurement point and another circumference on each measurement point between line and the first oil-gas pipeline
Central axis is not parallel.
Specifically, sample devices determines sampled point on sampling circumference, and guarantees one in every two adjacent circumferential
The central axis of the line and the first oil-gas pipeline between each sampled point on sampled point and another circumference on circumference is not
In parallel；Terminal control sample devices determined on each circumference in multiple circumference according to determining sampled point be spaced it is equal more
A measurement point, referring to fig. 2-2.
Wherein, each measurement point on the measurement point on a circumference in every two adjacent circumferential and another circumference it
Between line it is all not parallel with the central axis of the first oil-gas pipeline so that multiple measurement points be evenly distributed on first oil
In feed channel.
Step 202: weak magnetic detection being carried out to each measurement point in multiple measurement points, obtains that each measurement point is corresponding to answer
Power；
Wherein, weak magnetic detection is that the change of oil-gas pipeline upper stress is judged using the variation of Magnetic memory testing Weak magentic-field
Change；Stress refers to the additional internal force born on unit area.Magnetic Memory is steel spy intrinsic after geometry is formed
Property, it is formed by Weak magentic-field and changes with the variation of stress.
Wherein, step 202 specifically: the medium of the first oil-gas pipeline conveying pushes detector inside the first oil-gas pipeline
Sliding detects the weak magnetic signal of each measurement point in multiple measurement points of the first oil-gas pipeline by detector, and will inspection
The weak magnetic signal of survey is sent to the weak magnetic sensor for being mounted on oil-gas pipeline outer surface；Weak magnetic sensor receives what detector was sent
Weak magnetic signal, and weak magnetic signal obtains the corresponding stress of each measurement point based on the received.
Wherein, in embodiments of the present invention, stress present on the bigger oil-gas pipeline of weak magnetic signal is bigger.
Step 203: the measurement point that stress is greater than default value being determined as stress concentration point, and will according to stress concentration point
First oil-gas pipeline is divided into multiple second oil-gas pipelines；
Wherein, stress concentration refers to that oil-gas pipeline is sent out due to the factors such as extraneous factor or itself geometry, outer dimension
The phenomenon that subrange internal stress caused by raw mutation significantly increases.
Wherein, step 203 specifically: judge whether the stress of measurement point is greater than default value, if so, being determined as stress
Centrostigma；If not, being determined as non-stressed centrostigma.Oil-gas pipeline between two neighboring stress is determined as the second Oil/Gas Pipe
Road, so that the first oil-gas pipeline is divided into multiple second oil-gas pipelines.
In this step, two neighboring stress, respectively the first stress and the second stress can also be determined；Determine that first answers
The second circumference where the first circumference and the second stress where power；Oil-gas pipeline between first circumference and the second circumference is true
It is set to the second oil-gas pipeline, so that the first oil-gas pipeline is divided into multiple second oil-gas pipelines.
Wherein, default value can be configured and change according to the system performance of the first oil-gas pipeline, of the invention real
It applies in example, default value is not specifically limited.
Further, in embodiments of the present invention, it can be classified according to the size of the weak magnetic signal of each measurement point,
Weak magnetic signal in the first preset range is classified as stress levels 1；Weak magnetic signal in the second preset range is classified as answering
Range degree 2；Weak magnetic signal in third preset range is classified as stress levels 3；By the weak magnetic letter in the 4th preset range
Number it is classified as stress levels 4；Weak magnetic signal in the 5th preset range is classified as stress levels 5；It will be in the 6th preset range
Weak magnetic signal be classified as stress levels 6.
Wherein, the first preset range, the second preset range, third preset range, the 4th preset range, the 5th preset range
And the 6th preset range can be configured and change according to the performance of the first oil-gas pipeline, it is in embodiments of the present invention, right
First preset range, the second preset range, third preset range, the 4th preset range, the 5th preset range and the 6th are default
The value of range is not specifically limited.
For example, in embodiments of the present invention, the first preset range is 800-2000nT (nanoteslas, receive tesla),
Then stress levels 1 are normal presence stress phenomena；Second preset range is 2000-3000nT, then stress levels 2 are that stress is opposite
Centrostigma；Third preset range is 3000-4000nT, then stress levels 3 are that stress compares centrostigma；4th preset range is
4000-5000nT, then stress levels 4 are stress concentration point；5th preset range is 5000-6000nT, then stress levels 5 are to answer
The stronger centrostigma of power；6th preset range is 6000-7000nT, then stress levels 6 are the strong centrostigma of stress；By stress levels 4,
Stress levels 5 and stress levels 6 are determined as stress concentration point.
Step 204: thickness measuring being scanned to the second oil-gas pipeline of each of multiple second oil-gas pipelines, obtains each
The thickness of two oil-gas pipelines；
Specifically, 100% tube body C-scan thickness measuring is carried out to the second oil-gas pipeline of each of multiple second oil-gas pipelines,
Obtain the thickness of each second oil-gas pipeline.
Step 205: minimum of the minimum thickness as the first oil-gas pipeline is selected from the thickness of each second oil-gas pipeline
Thickness；
Step 206: the safe-working pressure of the first oil-gas pipeline is calculated according to the minimum thickness of the first oil-gas pipeline；
Wherein, safe-working pressure is the operating pressure that oil-gas pipeline can be born in normal operation.
Wherein, step 206 can be realized by first way or the second way, can for the first implementation
To be realized by following steps (1) to (6), comprising:
(1): obtaining the corresponding standard thickness of the first oil-gas pipeline, normal intensity design ratio, standard weld coefficient and mark
Quasi- yield strength；
Wherein, standard thickness refers to thickness when oil-gas pipeline dispatches from the factory；Normal intensity design ratio refers to that Oil/Gas Pipe is said
Corresponding Intensity Design system when factory；Standard weld coefficient refers to corresponding weld joint efficiency when oil-gas pipeline factory；Standard yield
Intensity refers to corresponding yield strength when oil-gas pipeline factory.
Wherein, normal intensity design ratio, standard weld coefficient and standard yield intensity can be configured according to standard
And change, normal intensity design ratio, standard weld coefficient and standard yield intensity are not done specifically in embodiments of the present invention
It limits.
For example, according to standard GB 50253-2003 " Oil Transportation Pipeline Engineering design specification " and standard SY/T0015.1-98
The regulation of " crude oil and natural-gas transfer pipeline Crossing Engineering design specification ", general area outside oil transportation station, normal intensity design
Coefficient F takes 0.72.According to the regulation of standard GB 50253-2003 " Oil Transportation Pipeline Engineering design specification ", grade of steel is the steel of L450
Pipe standards weld joint efficiency E takes 1.0.When assessing oil-gas pipeline, standard yield intensity σ s takes 450 megapascal (MPa) MPa.
(2): calculating the ratio of minimum thickness and standard thickness, obtain thickness parameter；
In use, thickness is lossy for first oil-gas pipeline, calculates minimum thickness and standard thickness in this step
Ratio, obtain the thickness parameter of the first oil-gas pipeline.
(3): current according to thickness parameter, normal intensity design ratio, standard weld coefficient and standard yield Strength co-mputation
The corresponding Intensity Design coefficient of first oil-gas pipeline, weld joint efficiency and yield strength；
The product of calculated thickness parameter and normal intensity design ratio obtains the corresponding intensity of current first oil-gas pipeline and sets
Count coefficient；The product of calculated thickness parameter and standard weld coefficient obtains the corresponding weld joint efficiency of current first oil-gas pipeline；Meter
The product for calculating thickness parameter and standard yield intensity, obtains the corresponding yield strength of current first oil-gas pipeline.
(4): the product of the corresponding Intensity Design coefficient of current first oil-gas pipeline, weld joint efficiency and yield strength is calculated,
Obtain the maximum stress that the first oil-gas pipeline is able to bear；
Calculate the product of the corresponding Intensity Design coefficient F of current first oil-gas pipeline, weld joint efficiency E and yield strength σ s；
The maximum stress that product is able to bear as the first oil-gas pipeline.
Wherein, in embodiments of the present invention, the maximum stress that the first oil-gas pipeline is able to bear is [σ]=FE σS。
(5): the product of maximum stress, minimum thickness and numerical value 2 that the first oil-gas pipeline of calculating is able to bear；
(6): calculating the ratio of the overall diameter of product and the first oil-gas pipeline, obtain the safe-working pressure of oil-gas pipeline.
Calculate the minimum thickness t of maximum stress σ, the first oil-gas pipeline that the first oil-gas pipeline is able to bearminWith numerical value 2
Product；Calculate the ratio P of the overall diameter D of product and the first oil-gas pipeline；Using ratio P as the safe work of the first oil-gas pipeline
Make pressure.
Wherein, in embodiments of the present invention, the safe-working pressure P=2 of the first oil-gas pipeline × [σ] × tmin÷D。[σ]
=FE σS, then safe-working pressure P=2 × FE σ of the first oil-gas pipelineS×tmin÷D。
Wherein, the minimum thickness of the maximum stress and the first oil-gas pipeline that are able to bear according to the first oil-gas pipeline calculates the
Before the safe-working pressure of one oil-gas pipeline, the overall diameter D of the first oil-gas pipeline is measured.
Further, in embodiments of the present invention, the first oil-gas pipeline is calculated according to the minimum thickness of the first oil-gas pipeline
Safe-working pressure, select the first oil-gas pipeline that representative, risk is high and damage is more serious to carry out security evaluation,
So that appraisal procedure is more reliable.
For example, the overall diameter of the first oil-gas pipeline is 457mm, minimum thickness 6.97mm, current first oil-gas pipeline pair
The Intensity Design coefficient F answered is 0.72, and weld joint efficiency E is 1.0, yield strength σsFor 450MPa, then the first oil-gas pipeline can
The maximum stress of receiving is [σ]=FE σS=0.72 × 1.0 × 450=324N.The safe-working pressure P=of first oil-gas pipeline
2×[σ]×tminD=2 × 324 ÷ × 6.97 ÷ 457=9.9MPa.Then the safe-working pressure of the first oil-gas pipeline is
9.9MPa。
For second of implementation, can be realized by following steps (A) to (F), comprising:
(A): obtaining the corresponding guideline life of the first oil-gas pipeline, normal intensity designing system, standard weld coefficient
With standard yield intensity and the currently used time limit；
Wherein, guideline life refers to the time limit that oil-gas pipeline can be used；Normal intensity design ratio refers to oil gas
Pipeline corresponding Intensity Design system when dispatching from the factory；Standard weld coefficient refers to corresponding weld joint efficiency when oil-gas pipeline factory；Mark
Quasi- yield strength refers to corresponding yield strength when oil-gas pipeline factory.
Wherein, normal intensity design ratio, standard weld coefficient and standard yield intensity can be configured according to standard
And change, normal intensity design ratio, standard weld coefficient and standard yield intensity are not done specifically in embodiments of the present invention
It limits.
For example, according to standard GB 50253-2003 " Oil Transportation Pipeline Engineering design specification " and standard SY/T0015.1-98
The regulation of " crude oil and natural-gas transfer pipeline Crossing Engineering design specification ", general area outside oil transportation station, normal intensity design
Coefficient F takes 0.72.According to the regulation of standard GB 50253-2003 " Oil Transportation Pipeline Engineering design specification ", grade of steel is the steel of L450
Pipe standards weld joint efficiency E takes 1.0.When assessing oil-gas pipeline, standard yield intensity σsTake 450 megapascal (MPa) MPa.
(B): calculating the ratio of the currently used time limit and guideline life, obtain time limit parameter；
The time of first oil-gas pipeline used is longer, and the safety of the first oil-gas pipeline is poorer, in this step, obtains
The time of making the product for taking the first oil-gas pipeline calculates the first Oil/Gas Pipe according to the time of making the product of the first oil-gas pipeline and current time
The currently used time limit in road, calculates the ratio of the currently used time limit and guideline life, obtains time limit parameter.
The difference at the time of making the product of current time and the first oil-gas pipeline is calculated, it can be directly using the difference as the first oil
The currently used time limit of feed channel；It, can be using the integer part of the difference as the first Oil/Gas Pipe if the difference is not integer
The integer part of the difference can also be added the currently used time limit as the first oil-gas pipeline by the currently used time limit in road.
(C): current according to time limit parameter, normal intensity design ratio, standard weld coefficient and standard yield Strength co-mputation
The corresponding Intensity Design coefficient of first oil-gas pipeline, weld joint efficiency and yield strength；
Step (C) can be realized by following steps (C-1) and (C-2), comprising:
(C-1): the location of first oil-gas pipeline is obtained, according to position acquisition environmental parameter；
Before this step, the corresponding relationship of storage location and environmental parameter；In this step, the first oil-gas pipeline is obtained
Location obtains environmental parameter from the corresponding relationship of position and environmental parameter according to the position.
(C-2): strong according to environmental parameter, time limit parameter, normal intensity design ratio, standard weld coefficient and standard yield
Degree calculates the corresponding Intensity Design coefficient of current first oil-gas pipeline, weld joint efficiency and yield strength.
Environmental parameter, the product of time limit parameter and normal intensity design ratio are calculated, current first oil-gas pipeline pair is obtained
The Intensity Design coefficient answered；Environmental parameter, the product of time limit parameter and standard weld coefficient are calculated, current first Oil/Gas Pipe is obtained
The corresponding weld joint efficiency in road；Environmental parameter, the product of time limit parameter and standard yield intensity are calculated, current first Oil/Gas Pipe is obtained
The corresponding yield strength in road.
(D): the product of the corresponding Intensity Design coefficient of current first oil-gas pipeline, weld joint efficiency and yield strength is calculated,
Obtain the maximum stress that the first oil-gas pipeline is able to bear；
(E): the product of maximum stress, minimum thickness and numerical value 2 that the first oil-gas pipeline of calculating is able to bear；
(F): calculating the ratio of the overall diameter of product and the first oil-gas pipeline, obtain the safe-working pressure of oil-gas pipeline.
Step 207: judging whether the safe-working pressure of the first oil-gas pipeline is greater than the current receiving work of oil-gas pipeline
Pressure, if so, executing step 208；If not, executing step 209；
Step 208: determining that the first oil-gas pipeline is safe, end；
Step 209: determining that the first oil-gas pipeline is unsafe.
For example, the safe-working pressure of the first oil-gas pipeline is 9.9MPa, when the current receiving work of the first oil-gas pipeline
When pressure is greater than 9.9MPa, determine that first oil-gas pipeline is unsafe；When the current receiving work of the first oil-gas pipeline
When pressure is not more than 9.9MPa, determine that first oil-gas pipeline is safe.
In embodiments of the present invention, determine that multiple measurement points on the first oil-gas pipeline, multiple measurement points are evenly distributed on
On first oil-gas pipeline；Weak magnetic detection is carried out to each measurement point in multiple measurement points, obtains that each measurement point is corresponding to answer
Power；The measurement point that stress is greater than default value is determined as stress concentration point, and according to stress concentration point by the first oil-gas pipeline
It is divided into multiple second oil-gas pipelines；Thickness measuring is scanned to the second oil-gas pipeline of each of multiple second oil-gas pipelines, is obtained
The thickness of each second oil-gas pipeline；Minimum thickness is selected from the thickness of each second oil-gas pipeline as the first oil-gas pipeline
Minimum thickness；The safe-working pressure of the first oil-gas pipeline is calculated according to the minimum thickness of the first oil-gas pipeline；According to first
The safe-working pressure of oil-gas pipeline carries out security evaluation to the first oil-gas pipeline, potential to oil-gas pipeline so as to realize
Damage carries out security evaluation, also, this method is safe and reliable, is suitable for the security evaluation of long-distance oil & gas pipeline.
Embodiment 3
The present invention provides a kind of apparatus structure schematic diagrams of oil-gas pipeline safety assessment.Referring to Fig. 3, wherein the device
Include:
First determining module 301, for determining that multiple measurement points on the first oil-gas pipeline, multiple measurement points are uniformly distributed
On the first oil-gas pipeline；
Detection module 302 obtains each measurement point for carrying out weak magnetic detection to each measurement point in multiple measurement points
Corresponding stress；
Second determining module 303, the measurement point for stress to be greater than default value are determined as stress concentration point, and according to
First oil-gas pipeline is divided into multiple second oil-gas pipelines by stress concentration point；
Thickness measuring module 304 is obtained for being scanned thickness measuring to the second oil-gas pipeline of each of multiple second oil-gas pipelines
To the thickness of each second oil-gas pipeline；
Module 305 is chosen, for selecting minimum thickness as the first Oil/Gas Pipe from the thickness of each second oil-gas pipeline
The minimum thickness in road；
Computing module 306, for calculating the trouble free service of the first oil-gas pipeline according to the minimum thickness of the first oil-gas pipeline
Pressure；
Evaluation module 307, for carrying out safety to the first oil-gas pipeline according to the safe-working pressure of the first oil-gas pipeline
Assessment.
Preferably, computing module 306, comprising:
First acquisition unit, for obtaining the corresponding standard thickness of the first oil-gas pipeline, normal intensity design ratio, standard
Weld joint efficiency and standard yield intensity；
First computing unit obtains thickness parameter for calculating the ratio of minimum thickness and standard thickness；
Second computing unit, for according to thickness parameter, normal intensity design ratio, standard weld coefficient and standard yield
The corresponding Intensity Design coefficient of current first oil-gas pipeline of Strength co-mputation, weld joint efficiency and yield strength；
Third computing unit, for calculating the corresponding Intensity Design coefficient of current first oil-gas pipeline, weld joint efficiency and bending
The product for taking intensity obtains the maximum stress that the first oil-gas pipeline is able to bear；
4th computing unit, for calculating maximum stress, minimum thickness and numerical value 2 that the first oil-gas pipeline is able to bear
Product；
5th computing unit, the ratio of the overall diameter for calculating product and the first oil-gas pipeline, obtains oil-gas pipeline
Safe-working pressure.
Preferably, computing module 306, comprising:
Second acquisition unit, for obtain the corresponding guideline life of the first oil-gas pipeline, normal intensity designing system,
Standard weld coefficient and standard yield intensity and the currently used time limit；
6th computing unit obtains time limit parameter for calculating the ratio of the currently used time limit and guideline life；
7th computing unit, for according to time limit parameter, normal intensity design ratio, standard weld coefficient and standard yield
The corresponding Intensity Design coefficient of current first oil-gas pipeline of Strength co-mputation, weld joint efficiency and yield strength；
8th computing unit, for calculating the corresponding Intensity Design coefficient of current first oil-gas pipeline, weld joint efficiency and bending
The product for taking intensity obtains the maximum stress that the first oil-gas pipeline is able to bear；
9th computing unit, for calculating maximum stress, minimum thickness and numerical value 2 that the first oil-gas pipeline is able to bear
Product；
Tenth computing unit, the ratio of the overall diameter for calculating product and the first oil-gas pipeline, obtains oil-gas pipeline
Safe-working pressure.
Preferably, the 7th computing unit, comprising:
Subelement is obtained, for obtaining the location of first oil-gas pipeline, according to position acquisition environmental parameter；
Computation subunit, for according to environmental parameter, time limit parameter, normal intensity design ratio, standard weld coefficient and
The corresponding Intensity Design coefficient of current first oil-gas pipeline of standard yield Strength co-mputation, weld joint efficiency and yield strength.
Preferably, the first determining module 301, comprising:
First determination unit, for determining multiple circumference on the first oil-gas pipeline, the every two in multiple circumference is adjacent
The distance between circumference is equal；
Second determination unit determines the equal multiple measurement points in interval on each circumference in multiple circumference, and
Line between each measurement point in the measurement point and another circumference on a circumference in every two adjacent circumferential with
The central axis of first oil-gas pipeline is not parallel.
First determining module 301 further include: sampling unit, it is true on the first oil-gas pipeline for controlling the first determination unit
Fixed multiple circumference are also used to control the second determination unit and determine the equal multiple surveys in interval on each circumference in multiple circumference
Amount point.
In embodiments of the present invention, determine that multiple measurement points on the first oil-gas pipeline, multiple measurement points are evenly distributed on
On first oil-gas pipeline；Weak magnetic detection is carried out to each measurement point in multiple measurement points, obtains that each measurement point is corresponding to answer
Power；The measurement point that stress is greater than default value is determined as stress concentration point, and according to stress concentration point by the first oil-gas pipeline
It is divided into multiple second oil-gas pipelines；Thickness measuring is scanned to the second oil-gas pipeline of each of multiple second oil-gas pipelines, is obtained
The thickness of each second oil-gas pipeline；Minimum thickness is selected from the thickness of each second oil-gas pipeline as the first oil-gas pipeline
Minimum thickness；The safe-working pressure of the first oil-gas pipeline is calculated according to the minimum thickness of the first oil-gas pipeline；According to first
The safe-working pressure of oil-gas pipeline carries out security evaluation to the first oil-gas pipeline, potential to oil-gas pipeline so as to realize
Damage carries out security evaluation, also, this method is safe and reliable, is suitable for the security evaluation of long-distance oil & gas pipeline.
It should be understood that the device of oil-gas pipeline safety assessment provided by the above embodiment is assessed in oil-gas pipeline safety
When, only the example of the division of the above functional modules, in practical application, it can according to need and divide above-mentioned function
With being completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, to complete above description
All or part of function.In addition, the device and oil-gas pipeline safety of oil-gas pipeline safety assessment provided by the above embodiment
The embodiment of the method for assessment belongs to same design, and specific implementation process is detailed in embodiment of the method, and which is not described herein again.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of method of oil-gas pipeline safety assessment, which is characterized in that the described method includes:
Determine that multiple measurement points on the first oil-gas pipeline, the multiple measurement point are evenly distributed on first oil-gas pipeline
On；
Weak magnetic detection is carried out to each measurement point in the multiple measurement point, obtains the corresponding stress of each measurement point；
The measurement point that stress is greater than default value is determined as stress concentration point, and according to the stress concentration point by described first
Oil-gas pipeline is divided into multiple second oil-gas pipelines；
Thickness measuring is scanned to the second oil-gas pipeline of each of the multiple second oil-gas pipeline, obtains each second oil
The thickness of feed channel；
Minimum thickness of the minimum thickness as first oil-gas pipeline is selected from the thickness of each second oil-gas pipeline；
The safe-working pressure of first oil-gas pipeline is calculated according to the minimum thickness of first oil-gas pipeline；
Security evaluation is carried out to first oil-gas pipeline according to the safe-working pressure of first oil-gas pipeline；
Wherein, the minimum thickness according to first oil-gas pipeline calculates the trouble free service pressure of first oil-gas pipeline
Power, comprising:
The product for calculating the corresponding Intensity Design coefficient of presently described first oil-gas pipeline, weld joint efficiency and yield strength, obtains
The maximum stress that first oil-gas pipeline is able to bear；
Calculate the maximum stress that first oil-gas pipeline is able to bear, the product of the minimum thickness and numerical value 2；
The ratio for calculating the overall diameter of the product and first oil-gas pipeline, obtains the trouble free service pressure of the oil-gas pipeline
Power.
2. the method as described in claim 1, which is characterized in that corresponding strong in presently described first oil-gas pipeline of calculating
It spends before the product of design ratio, weld joint efficiency and yield strength, the method, further includes:
The corresponding standard thickness of first oil-gas pipeline, normal intensity design ratio, standard weld coefficient and standard is obtained to bend
Take intensity；
The ratio for calculating the minimum thickness and the standard thickness, obtains thickness parameter；
According to the thickness parameter, the normal intensity design ratio, the standard weld coefficient and the standard yield intensity
Calculate the corresponding Intensity Design coefficient of presently described first oil-gas pipeline, weld joint efficiency and yield strength.
3. the method as described in claim 1, which is characterized in that corresponding strong in presently described first oil-gas pipeline of calculating
It spends before the product of design ratio, weld joint efficiency and yield strength, the method, further includes:
Obtain the corresponding guideline life of first oil-gas pipeline, normal intensity designing system, standard weld coefficient and mark
Quasi- yield strength and the currently used time limit；
The ratio for calculating the currently used time limit and the guideline life, obtains time limit parameter；
According to the time limit parameter, the normal intensity design ratio, the standard weld coefficient and the standard yield intensity
Calculate the corresponding Intensity Design coefficient of presently described first oil-gas pipeline, weld joint efficiency and yield strength.
4. method as claimed in claim 3, which is characterized in that described to be designed according to the time limit parameter, the normal intensity
Coefficient, the standard weld coefficient and the corresponding Intensity Design of presently described first oil-gas pipeline of the standard yield Strength co-mputation
Coefficient, weld joint efficiency and yield strength, comprising:
The location of described first oil-gas pipeline is obtained, according to the position acquisition environmental parameter；
According to the environmental parameter, the time limit parameter, the normal intensity design ratio, the standard weld coefficient and described
The corresponding Intensity Design coefficient of presently described first oil-gas pipeline of standard yield Strength co-mputation, weld joint efficiency and yield strength.
5. the method as described in claim 1, which is characterized in that multiple measurement points on first oil-gas pipeline of determination, packet
It includes:
Multiple circumference, the distance between every two adjacent circumferential in the multiple circumference phase are determined on the first oil-gas pipeline
Deng；
It is determined on each circumference in the multiple circumference and is spaced equal multiple measurement points, and the every two adjacent circumferential
In a circumference on measurement point and another circumference on each measurement point between line and first Oil/Gas Pipe
The central axis in road is not parallel.
6. a kind of device of oil-gas pipeline safety assessment, which is characterized in that described device includes:
First determining module, for determining that multiple measurement points on the first oil-gas pipeline, the multiple measurement point are evenly distributed on
On first oil-gas pipeline；
Detection module obtains each measurement for carrying out weak magnetic detection to each measurement point in the multiple measurement point
The corresponding stress of point；
Second determining module, the measurement point for stress to be greater than default value is determined as stress concentration point, and is answered according to described
First oil-gas pipeline is divided into multiple second oil-gas pipelines by power centrostigma；
Thickness measuring module is obtained for being scanned thickness measuring to the second oil-gas pipeline of each of the multiple second oil-gas pipeline
The thickness of each second oil-gas pipeline；
Module is chosen, for selecting minimum thickness as first Oil/Gas Pipe from the thickness of each second oil-gas pipeline
The minimum thickness in road；
Computing module, for calculating the trouble free service of first oil-gas pipeline according to the minimum thickness of first oil-gas pipeline
Pressure；
Evaluation module, for carrying out safety to first oil-gas pipeline according to the safe-working pressure of first oil-gas pipeline
Assessment；
Wherein, the computing module, comprising:
Third computing unit, for calculating the corresponding Intensity Design coefficient of presently described first oil-gas pipeline, weld joint efficiency and bending
The product for taking intensity obtains the maximum stress that first oil-gas pipeline is able to bear；
4th computing unit, maximum stress, the minimum thickness and the number being able to bear for calculating first oil-gas pipeline
The product of value 2；
5th computing unit, the ratio of the overall diameter for calculating the product and first oil-gas pipeline, obtains the oil
The safe-working pressure of feed channel.
7. device as claimed in claim 6, which is characterized in that the computing module, further includes:
First acquisition unit, for obtaining the corresponding standard thickness of first oil-gas pipeline, normal intensity design ratio, standard
Weld joint efficiency and standard yield intensity；
First computing unit obtains thickness parameter for calculating the ratio of the minimum thickness and the standard thickness；
Second computing unit, for according to the thickness parameter, the normal intensity design ratio, the standard weld coefficient and
The corresponding Intensity Design coefficient of presently described first oil-gas pipeline of standard yield Strength co-mputation, weld joint efficiency and surrender are strong
Degree.
8. device as claimed in claim 6, which is characterized in that the computing module, further includes:
Second acquisition unit, for obtain the corresponding guideline life of first oil-gas pipeline, normal intensity designing system,
Standard weld coefficient and standard yield intensity and the currently used time limit；
6th computing unit obtains time limit ginseng for calculating the ratio of the currently used time limit and the guideline life
Number；
7th computing unit, for according to the time limit parameter, the normal intensity design ratio, the standard weld coefficient and
The corresponding Intensity Design coefficient of presently described first oil-gas pipeline of standard yield Strength co-mputation, weld joint efficiency and surrender are strong
Degree.
9. device as claimed in claim 8, which is characterized in that the 7th computing unit, comprising:
Subelement is obtained, for obtaining the location of described first oil-gas pipeline, according to the position acquisition environmental parameter；
Computation subunit, for according to the environmental parameter, the time limit parameter, the normal intensity design ratio, the mark
Quasi- weld joint efficiency and the corresponding Intensity Design coefficient of presently described first oil-gas pipeline of the standard yield Strength co-mputation, weld seam system
Several and yield strength.
10. device as claimed in claim 6, which is characterized in that first determining module, comprising:
First determination unit, for determining multiple circumference on the first oil-gas pipeline, the every two in the multiple circumference is adjacent
The distance between circumference is equal；
Second determination unit determines the equal multiple measurement points in interval on each circumference in the multiple circumference, and
The line between each measurement point in the measurement point and another circumference on a circumference in the every two adjacent circumferential
It is all not parallel with the central axis of first oil-gas pipeline.
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