CN114544473A - Method and device for determining corrosion rate of pipeline and computer storage medium - Google Patents

Method and device for determining corrosion rate of pipeline and computer storage medium Download PDF

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CN114544473A
CN114544473A CN202011338459.4A CN202011338459A CN114544473A CN 114544473 A CN114544473 A CN 114544473A CN 202011338459 A CN202011338459 A CN 202011338459A CN 114544473 A CN114544473 A CN 114544473A
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probe
corrosion
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崔铭芳
张强
高健
刘畅
王磊
张健
杜炘洁
李鹏程
刘斌
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Petrochina Co Ltd
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Abstract

The embodiment of the application discloses a method and a device for determining corrosion rate of a pipeline and a computer storage medium, and belongs to the technical field of oil gas. The method comprises the following steps: acquiring equivalent rigidity, a first state parameter and a second state parameter of a corrosion probe in a target pipeline, wherein the corrosion probe is made of the same material as the target pipeline, the first state parameter is a state parameter of the corrosion probe at a first moment, the second state parameter is a state parameter of the corrosion probe at a second moment, and the target pipeline is any one of pipelines to be measured; determining the corrosion rate of the corrosion probe according to the equivalent stiffness of the corrosion probe, the first state parameter and the second state parameter; and determining the corrosion rate of the corrosion probe as the corrosion rate of the target pipeline. In the embodiment of the application, the corrosion rate of the corrosion probe is determined through the equivalent rigidity of the corrosion probe and the state parameters of the corrosion probe at different moments, the influence of factors such as medium property, temperature and the like is not required to be considered, and the accuracy of determining the corrosion rate of the target pipeline is improved.

Description

Method and device for determining corrosion rate of pipeline and computer storage medium
Technical Field
The embodiment of the application relates to the technical field of oil and gas, in particular to a method and a device for determining the corrosion rate of a pipeline and a computer storage medium.
Background
In the oil and gas transmission field, the pipeline can corrode because of the characteristics of the medium after transporting the medium for a long time, and after the pipeline corrodes, corrosion accidents can happen, so that potential safety hazards are caused. Therefore, in order to prevent the occurrence of corrosion accidents, a corrosion probe is usually installed in the pipeline, and the corrosion rate of the pipeline is determined by the corrosion probe, so that the corrosion condition of the pipeline is monitored by the corrosion rate of the pipeline.
Currently, electrochemical probes, resistive probes, and inductive probes are commonly used for corrosion probes. When the electrochemical probe is used, the electrochemical probe is equivalent to a battery, the corrosion current can be monitored through the electrochemical probe, and the corrosion rate of the pipeline is determined according to the characteristic that the corrosion rate is in direct proportion to the corrosion current; when the resistance probe is used, since the length of the wire is unchanged, the diameter is reduced and the resistance is increased after the wire in the resistance probe is corroded, the corrosion thinning amount of the wire can be determined through the detected resistance change, and the corrosion rate of the pipeline can be determined according to the corrosion thinning amount. When the inductance probe is used, the corrosion thinning amount of the pipeline can be determined by detecting the variation of the inductance strength of the inductance probe, and the corrosion rate of the pipeline can be determined according to the corrosion thinning amount.
However, in the process of using an electrochemical probe, a resistance probe and an inductance probe, current, resistance or inductance needs to be detected, and the detected current, resistance and inductance are all easily affected by factors such as a transported medium, temperature and the like, so that the determined corrosion rate of the pipeline is inaccurate, and the reliability of monitoring the corrosion condition of the pipeline is reduced.
Disclosure of Invention
The embodiment of the application provides a method and a device for determining the corrosion rate of a pipeline and a computer storage medium, which can improve the accuracy of determining the corrosion rate of the pipeline and improve the reliability of monitoring the corrosion condition of the pipeline. The technical scheme is as follows:
in one aspect, a method for determining a corrosion rate of a pipe is provided, the method comprising:
obtaining equivalent rigidity, a first state parameter and a second state parameter of a corrosion probe in a target pipeline, wherein the corrosion probe is made of the same material as the target pipeline, the first state parameter is a state parameter of the corrosion probe at a first moment, the second state parameter is a state parameter of the corrosion probe at a second moment, and the target pipeline is any one of pipelines to be measured;
determining a corrosion rate of the corrosion probe based on the equivalent stiffness of the corrosion probe, the first state parameter, and the second state parameter;
determining a corrosion rate of the corrosion probe as a corrosion rate of the target pipe.
In some embodiments, the obtaining an equivalent stiffness of a corrosion probe within a target pipe, a first state parameter and a second state parameter of the corrosion probe comprises:
acquiring a first mass, a material density, a probe radius, a probe length and a first vibration frequency of the corrosion probe at the first moment;
multiplying the square of the first vibration frequency by the first mass to obtain the equivalent stiffness of the corrosion probe;
and acquiring a second vibration frequency of the corrosion probe at the second moment by a vibration detector on the target pipeline.
In some embodiments, the first state parameters include a material density, a probe radius, and a probe length of the corrosion probe;
determining a corrosion rate of the corrosion probe based on the equivalent stiffness of the corrosion probe, the first state parameter, and the second state parameter, comprising:
determining the corrosion quality of the corrosion probe according to the equivalent stiffness, the first state parameter and the second state parameter, wherein the corrosion quality is the quality of the corrosion probe corroded within a reference time difference, and the reference time difference is the time difference between the first time and the second time;
and determining the corrosion rate according to the corrosion quality, the reference time difference, the material density, the probe radius and the probe length.
In some embodiments, the first state parameter further comprises a first mass of the corrosion probe, and the second state parameter comprises a second vibration frequency of the corrosion probe;
determining a corrosion quality of the corrosion probe based on the equivalent stiffness, the first state parameter, and the second state parameter, comprising:
dividing the equivalent stiffness by the square of the second vibration frequency to obtain a second mass of the corrosion probe;
and subtracting the second mass from the first mass to obtain the corrosion mass of the corrosion probe.
In some embodiments, said determining said erosion rate from said erosion quality, said reference time difference, said material density, said probe radius, and said probe length comprises:
determining the corrosion rate according to the corrosion quality, the reference time difference, the material density, the probe radius and the probe length by using a first formula;
Δm＝ρprobe needle(πR2H-π(R-vt)2H)
Wherein Δ m is the corrosion quality, and t isThe reference time difference, the pProbe needleThe material density, the R the probe radius, the H the probe length, and the v the corrosion rate.
In some embodiments, the first state parameters include a first vibration frequency, a material density, a probe radius, and a probe length of the corrosion probe, and the second state parameters include a second vibration frequency;
determining a corrosion rate of the corrosion probe based on the equivalent stiffness of the corrosion probe, the first state parameter, and the second state parameter of the corrosion probe, comprising:
determining the corrosion rate according to the equivalent stiffness, the first vibration frequency, the material density, the probe radius, the probe length and the second vibration frequency by using a second formula;
Figure BDA0002797861920000031
wherein, K iscFor the equivalent stiffness, t is the reference time difference, pProbe needleIs the material density, R is the probe radius, H is the probe length, w0Is the first vibration frequency, w1And v is the corrosion rate, the second vibration frequency.
In another aspect, there is provided an apparatus for determining a corrosion rate of a pipe, the apparatus including:
the system comprises an acquisition module, a detection module and a control module, wherein the acquisition module is used for acquiring equivalent rigidity, a first state parameter and a second state parameter of a corrosion probe in a target pipeline, the corrosion probe is made of the same material as the target pipeline, the first state parameter is a state parameter of the corrosion probe at a first moment, the second state parameter is a state parameter of the corrosion probe at a second moment, and the target pipeline is any one of pipelines to be measured;
a first determination module for determining a corrosion rate of the corrosion probe based on the equivalent stiffness of the corrosion probe, the first state parameter, and the second state parameter;
a second determination module for determining a corrosion rate of the corrosion probe as a corrosion rate of the target pipe.
In some embodiments, the obtaining module comprises:
the first obtaining submodule is used for obtaining the first mass, the material density, the probe radius, the probe length and the first vibration frequency of the corrosion probe at the first moment;
a calculation submodule for multiplying the square of the first vibration frequency by the first mass to obtain an equivalent stiffness of the corrosion probe;
and the second acquisition sub-module is used for acquiring a second vibration frequency of the corrosion probe at the second moment through the vibration detector on the target pipeline.
In some embodiments, the first state parameters include a material density, a probe radius, and a probe length of the corrosion probe;
the first determining module includes:
a first determining submodule, configured to determine, according to the equivalent stiffness, the first state parameter, and the second state parameter, a corrosion quality of the corrosion probe, where the corrosion quality is a quality of the corrosion probe corroded within a reference time difference, and the reference time difference is a time difference between the first time and the second time;
and the second determining submodule is used for determining the corrosion rate according to the corrosion quality, the reference time difference, the material density, the probe radius and the probe length.
In some embodiments, the first state parameter further comprises a first mass of the corrosion probe, and the second state parameter comprises a second vibration frequency of the corrosion probe;
the first determination submodule is further configured to:
dividing the equivalent stiffness by the square of the second vibration frequency to obtain a second mass of the corrosion probe;
and subtracting the second mass from the first mass to obtain the corrosion mass of the corrosion probe.
In some embodiments, the second determination submodule is further configured to:
determining the corrosion rate according to the corrosion quality, the reference time difference, the material density, the probe radius and the probe length by using a first formula;
Δm＝ρprobe needle(πR2H-π(R-vt)2H)
Wherein Δ m is the corrosion quality, t is the reference time difference, ρProbe needleThe material density, the R the probe radius, the H the probe length, and the v the corrosion rate.
In some embodiments, the first state parameters include a first vibration frequency, a material density, a probe radius, and a probe length of the corrosion probe, and the second state parameters include a second vibration frequency;
the first determination module is further to:
determining the corrosion rate according to the equivalent stiffness, the first vibration frequency, the material density, the probe radius, the probe length and the second vibration frequency by using a second formula;
Figure BDA0002797861920000051
wherein, K iscFor the equivalent stiffness, the t is the reference time difference, the pProbe needleIs the material density, R is the probe radius, H is the probe length, w0Is the first vibration frequency, w1And v is the corrosion rate, the second vibration frequency.
In another aspect, a computer program product comprising instructions is provided which, when run on a computer, causes the computer to perform the method of determining corrosion rate of a pipe as described above.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
in the embodiment of the application, the corrosion rate of the corrosion probe can be determined through the equivalent rigidity and the state parameters of the corrosion probe at different moments, the detection of current, inductance or resistance is not needed, and the equivalent rigidity does not change before and after the corrosion probe is corroded, so that the equivalent rigidity is not influenced by factors such as medium properties and temperature. And the material of the target pipeline is the same as that of the corrosion probe, so that the corrosion rate of the corrosion probe can be determined as the corrosion rate of the target pipeline, and the accuracy of determining the corrosion rate of the target pipeline is improved.
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 schematic diagram of a corrosion monitoring structure provided in an embodiment of the present application;
FIG. 2 is a flow chart of a method for determining a corrosion rate of a pipe according to an embodiment of the present disclosure;
FIG. 3 is a flow chart of another method for determining corrosion rate of a pipeline according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of an apparatus for determining a corrosion rate of a pipe according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an acquisition module according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a first determining module provided in an embodiment of the present application;
fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application more clear, the embodiments of the present application will be further described in detail with reference to the accompanying drawings.
Before explaining the method for determining the corrosion rate of the pipeline provided in the embodiment of the present application in detail, an application scenario and an implementation environment provided in the embodiment of the present application are introduced.
First, an application scenario related to the embodiment of the present application is described.
After equipment such as pipelines and the like are transported for a long time, the equipment can be influenced by transported media, so that corrosion occurs, corrosion accidents are brought, and potential safety hazards are caused. Therefore, in order to prevent the occurrence of corrosion accidents, the corrosion rate of the pipeline can be determined by a corrosion probe such as an electrochemical probe, a resistance probe, an inductance probe, etc., so as to monitor the corrosion condition of the pipeline through the corrosion rate of the pipeline.
However, when the corrosion rate of the pipeline is determined by a corrosion probe such as an electrochemical probe, a resistance probe, an inductance probe, etc., it is necessary to detect the current, the resistance, or the inductance, and the detected current, resistance, and inductance are all easily affected by factors such as the medium being transported, the temperature, etc., so that the determined corrosion rate of the pipeline is inaccurate, and the reliability of monitoring the corrosion condition of the pipeline is reduced.
Based on such an application scenario, the embodiment of the application provides a method for determining the corrosion efficiency of a pipeline, which improves the accuracy of determining the corrosion rate.
Next, an implementation environment related to the embodiments of the present application will be described.
Referring to fig. 1, fig. 1 is a schematic view of a corrosion monitoring structure according to an embodiment of the present disclosure. The corrosion monitoring structure comprises a target pipeline 1, a connecting flange 2 of the pipeline, a corrosion probe 3, a probe rod 4, an electromagnetic coil 5, a vibration detector 6, a support 7 and a data collector 8. The target pipeline 1 is connected with other pipelines through a pipeline connecting flange 2, the corrosion probe 3 is connected with one end of a probe rod 4, the corrosion probe 3 is located inside the target pipeline 1, the other end of the probe rod 4 is connected with a vibration detector 6, the vibration detector 6 is connected with a data collector 8, the electromagnetic coil 5 is arranged on the outer wall of the probe rod 4, the electromagnetic coil 5 is fixed on the probe rod 4 through a support piece 7, and the support piece 7 is arranged on the outer wall of the target pipeline to fix the electromagnetic coil 5.
It should be noted that the corrosion probe 3 may be a cylindrical measuring element, and a magnetic material is added to the center of the corrosion probe 3, so as to facilitate the excitation of the electromagnetic coil 5, and the material of the outside of the corrosion probe 3 is the same as that of the target pipe 1. The electromagnetic coil 5 can excite the corrosion probe 3 to start oscillation as an excitation oscillation source, and after the corrosion probe 3 starts oscillation, the oscillation detector 6 can detect the oscillation signal and send the oscillation signal to the data acquisition unit 8. The electromagnetic coil 5 and the vibration detector 6 are both composed of a coil and a magnetic cylinder. Wherein, the coil cylinder of the electromagnetic coil 5 provides driving force for the vibration of the corrosion probe by the principle of electromagnetic generation, and the vibration detector 6 induces current by measuring the vibration of the corrosion probe 3 to enable the coil to continuously cut a magnetic field.
It will be appreciated by those skilled in the art that the corrosion monitoring configurations described above are exemplary only, and that other configurations, now known or later developed, that may be suitable for use in the present application, are also encompassed by the present invention and are hereby incorporated by reference.
The method for determining the corrosion rate of a pipeline provided by the embodiments of the present application will be explained in detail with reference to the accompanying drawings.
Fig. 2 is a flowchart of a method for determining a corrosion rate of a pipe according to an embodiment of the present disclosure, where the method for determining a corrosion rate of a pipe may include the following steps:
step 201: the method comprises the steps of obtaining equivalent rigidity, a first state parameter and a second state parameter of a corrosion probe in a target pipeline, wherein the corrosion probe is made of the same material as the target pipeline, the first state parameter is a state parameter of the corrosion probe at a first moment, the second state parameter is a state parameter of the corrosion probe at a second moment, and the target pipeline is any one of pipelines to be measured.
Step 202: determining a corrosion rate of the corrosion probe based on the equivalent stiffness of the corrosion probe, the first state parameter, and the second state parameter.
Step 203: determining the corrosion rate of the corrosion probe as the corrosion rate of the target pipe.
In the embodiment of the application, the corrosion rate of the corrosion probe can be determined through the equivalent rigidity and the state parameters of the corrosion probe at different moments, the detection of current, inductance or resistance is not needed, and the equivalent rigidity does not change before and after the corrosion probe is corroded, so that the equivalent rigidity is not influenced by factors such as medium properties and temperature. And the material of the target pipeline is the same as that of the corrosion probe, so that the corrosion rate of the corrosion probe can be determined as the corrosion rate of the target pipeline, and the accuracy of determining the corrosion rate of the target pipeline is improved.
In some embodiments, obtaining the equivalent stiffness of the corrosion probe, the first state parameter and the second state parameter of the corrosion probe within the target pipe comprises:
acquiring a first mass, a material density, a probe radius, a probe length and a first vibration frequency of the corrosion probe at the first moment;
multiplying the square of the first vibration frequency by the first mass to obtain the equivalent stiffness of the corrosion probe;
and acquiring a second vibration frequency of the corrosion probe at the second moment by a vibration detector on the target pipeline.
In some embodiments, the first state parameter comprises a material density, a probe radius, and a probe length of the erosion probe;
determining a corrosion rate of the corrosion probe based on the equivalent stiffness of the corrosion probe, the first state parameter, and the second state parameter, comprising:
determining the corrosion quality of the corrosion probe according to the equivalent stiffness, the first state parameter and the second state parameter, wherein the corrosion quality is the quality of the corrosion probe corroded within a reference time difference, and the reference time difference is the time difference between the first time and the second time;
and determining the corrosion rate according to the corrosion quality, the reference time difference, the material density, the probe radius and the probe length.
In some embodiments, the first state parameter further comprises a first mass of the corrosion probe, and the second state parameter comprises a second vibration frequency of the corrosion probe;
determining a corrosion quality of the corrosion probe based on the equivalent stiffness, the first state parameter, and the second state parameter, comprising:
dividing the equivalent stiffness by the square of the second vibration frequency to obtain a second mass of the corrosion probe;
and subtracting the second mass from the first mass to obtain the corrosion mass of the corrosion probe.
In some embodiments, determining the erosion rate based on the erosion quality, the reference time difference, the material density, the probe radius, and the probe length comprises:
determining the corrosion rate by the following first formula according to the corrosion quality, the reference time difference, the material density, the probe radius and the probe length;
Δm＝ρprobe needle(πR2H-π(R-vt)2H)
Wherein Δ m is the corrosion quality, t is the reference time difference, ρProbe needleFor the material density, R is the probe radius, H is the probe length, and v is the erosion rate.
In some embodiments, the first state parameters include a first vibration frequency, a material density, a probe radius, and a probe length of the corrosion probe, and the second state parameters include a second vibration frequency;
determining a corrosion rate of the corrosion probe based on the equivalent stiffness of the corrosion probe, the first state parameter, and the second state parameter of the corrosion probe, comprising:
determining the corrosion rate according to the equivalent stiffness, the first vibration frequency, the material density, the probe radius, the probe length and the second vibration frequency by a second formula;
Figure BDA0002797861920000091
wherein, the K iscFor the corrosion quality, t is the reference time difference, ρProbe needleThe material density, R is the probe radius, H is the probe length, and w0At the first vibration frequency, the w1At the second vibration frequency, v is the corrosion rate.
All the above optional technical solutions can be combined arbitrarily to form an optional embodiment of the present application, and the present application embodiment is not described in detail again.
Fig. 3 is a flowchart of a method for determining a corrosion rate of a pipeline according to an embodiment of the present application, which is illustrated in the present application, where the method is applied to a terminal, and the method for determining a corrosion rate of a pipeline may include the following steps:
step 301: the terminal obtains the equivalent stiffness, the first state parameter and the second state parameter of the corrosion probe in the target pipeline.
The corrosion probe and the target pipeline are made of the same material, the first state parameter is a state parameter of the corrosion probe at a first time, and the second state parameter is a state parameter of the corrosion probe at a second time. The second time may be any time after the first time.
As an example, the operation of the terminal for obtaining the equivalent stiffness, the first state parameter and the second state parameter of the corrosion probe in the target pipe at least comprises: acquiring a first mass, a material density, a probe radius, a probe length and a first vibration frequency of the corrosion probe at a first moment; multiplying the square of the first vibration frequency by the first mass to obtain the equivalent stiffness of the corrosion probe; and acquiring a second vibration frequency of the corrosion probe at a second moment by a vibration detector arranged on the target pipeline.
Since the corrosion probe is a measuring element and the parameters related to the corrosion probe can be stored in the terminal, the terminal can obtain the first mass, the material density, the probe radius, the probe length, and the first vibration frequency of the corrosion probe from the stored parameters related to the corrosion probe.
In some embodiments, the first time may be any time before the corrosion probe is installed in the target pipe, or may be a time when the corrosion probe is installed in the target pipe. Since the equivalent stiffness of the corrosion probe is unchanged, the terminal may further store the equivalent stiffness of the corrosion probe before the corrosion probe is installed in the target pipeline, and the terminal can obtain the equivalent stiffness from the stored relevant parameters of the corrosion probe.
As an example, since there is a fixed relationship between the equivalent stiffness, the mass, and the vibration frequency, the terminal is also able to determine the equivalent stiffness by the first mass and the first vibration frequency. And because the first moment can also be the moment when the corrosion probe is installed in the target pipeline, the terminal can also acquire the first vibration frequency through a vibration detector installed on the target pipeline when the corrosion probe is installed in the target pipeline.
In some embodiments, the corrosion probe may be corroded by the medium after the target pipeline transports the medium for a period of time, and then, in order to determine the corrosion condition of the target pipeline, the terminal can acquire a second vibration frequency of the corrosion probe at a second moment through a vibration detector mounted on the target pipeline. That is, the terminal can control the electromagnetic coil installed on the pipeline to excite the corrosion probe to start vibration, and then the vibration detector detects the second vibration frequency of the corrosion probe at the second moment.
The second time is any time after the corrosion probe is attached to the target pipe.
It should be noted that, in order to improve the accuracy of determining the corrosion rate of the pipeline, the first vibration frequency and the second vibration frequency are frequencies detected after the corrosion probe starts to vibrate under the excitation of the same excitation vibration source. That is, the first vibration frequency is a frequency detected after the corrosion probe is excited by the excitation of the electromagnetic coil 5 shown in fig. 1, and the second vibration frequency is a frequency detected after the corrosion probe is excited by the excitation of the electromagnetic coil 5 shown in fig. 1.
Step 302: and the terminal determines the corrosion rate of the corrosion probe according to the equivalent rigidity, the first state parameter and the second state parameter of the corrosion probe.
As can be seen from the above, the first state parameter includes material density, probe radius and probe length of the corrosion probe, and as an example, the determining, by the terminal, the corrosion rate of the corrosion probe according to the equivalent stiffness of the corrosion probe, the first state parameter and the second state parameter at least includes the following operations: determining the corrosion quality of the corrosion probe according to the equivalent rigidity, the first state parameter and the second state parameter, wherein the corrosion quality is the quality of the corrosion probe corroded within a reference time difference, and the reference time difference is the time difference between the first time and the second time; and determining the corrosion rate according to the corrosion quality, the reference time difference, the material density, the radius of the probe and the length of the probe.
Since the corrosion probe is likely to be corroded after the target pipeline transports the medium for a period of time, the mass of the corrosion probe is changed, the equivalent rigidity of the corrosion probe is not changed, but other parameters such as the mass and the vibration frequency are changed, the terminal can determine the corrosion quality of the corrosion probe according to the equivalent rigidity, the first state parameter and the second state parameter.
Since the first state parameter also includes a first mass of the corrosion probe, the second state parameter includes a second vibration frequency of the corrosion probe, and there is a fixed relationship between the equivalent stiffness, mass, and vibration frequency. Thus, the operation of the terminal to determine the quality of corrosion of the corrosion probe based on the equivalent stiffness, the first state parameter, and the second state parameter includes at least: dividing the equivalent stiffness by the square of the second vibration frequency to obtain a second mass of the corrosion probe; and subtracting the second mass from the first mass to obtain the corrosion mass of the corrosion probe. This process can be described by the following third formula.
Figure BDA0002797861920000111
In the third formula (3), Δ m is decayedMass of etching, m0Is the first mass, m1Is of the second mass, KcTo equivalent stiffness, w1Is the second vibration frequency.
Because when the corrosion probe corrodes, the quality will reduce, and the vibration frequency of corrosion probe will increase, consequently, the change of corrosion probe quality can be confirmed through the variation of the vibration frequency of corrosion probe to the terminal, and the change of corrosion probe quality is the corrosion quality.
As an example, the terminal determines the corrosion rate according to the corrosion quality, the reference time difference, the material density, the probe radius, and the probe length by the following first formula.
Δm＝ρProbe needle(πR2H-π(R-vt)2H) (1)
In the first formula (1), Δ m represents the etching quality, t represents the reference time difference, and ρProbe pinIs the material density, R is the probe radius, H is the probe length, and v is the corrosion rate.
For example, the target pipe is made of L245, the corrosion probe installed in the target pipe is also made of L245, the length of the probe capable of acquiring the corrosion probe at the terminal is 60mm (millimeter), the radius of the probe is 1.5mm, and the material density is 7.85 × 103kg/m3(kilograms per cubic meter), the first mass is 200 grams, the first vibration frequency is 200 hertz (hertz), and the terminal multiplies the first vibration frequency by the first mass to yield an equivalent stiffness of 8033.63528. After the target pipeline transports the medium for 1 year (namely, the reference time difference is 1 year), an excitation signal is given to the corrosion probe through an electromagnetic coil arranged on the target pipeline, the corrosion probe starts to vibrate according to the excitation signal, a vibration detector arranged on the target pipeline detects that the second vibration frequency is 200.11Hz, after the second vibration frequency is obtained, the second mass and the corrosion mass can be sequentially determined through the third formula (3), and then the corrosion rate of the corrosion probe is determined to be 0.0508mm/y (mm/year) through the first formula (1).
In some embodiments, the manner in which the terminal determines the corrosion rate of the corrosion probe based on the equivalent stiffness of the corrosion probe, the first state parameter, and the second state parameter of the corrosion probe includes not only the foregoing, but also other manners. For example, since the first state parameter can further include a first vibration frequency, a material density, a probe radius and a probe length of the corrosion probe, and the second state includes a second vibration frequency, the terminal can further determine the corrosion rate according to the equivalent stiffness, the first vibration frequency, the material density, the probe radius, the probe length and the second vibration frequency by the following second formula;
Figure BDA0002797861920000112
in the second formula (2), K iscFor equivalent stiffness, t is the reference time difference, ρProbe needleIs material density, R is probe radius, H is probe length, w0Is a first vibration frequency, w1And v is the corrosion rate for the second vibration frequency.
For example, the target pipe is made of L245, the corrosion probe installed in the target pipe is also made of L245, the length of the probe, which can obtain the corrosion probe at the terminal, is 60mm (millimeter), the radius of the probe is 1.5mm, and the material density is 7.85 x 103kg/m3(kilogram/cubic meter), the equivalent stiffness is 8033.63528, the first vibration frequency is 200Hz (hertz), the corrosion probe is excited by an electromagnetic coil installed on the target pipeline after the target pipeline transports the medium for 1 year (namely, the reference time difference is 1 year), the corrosion probe starts to vibrate according to the excitation signal, a vibration detector installed on the target pipeline detects that the second vibration frequency is 200.11Hz, and after the second vibration frequency is obtained, the corrosion rate of the corrosion probe can be determined to be 0.0508mm/y (millimeter/year) through the second formula (2).
Step 303: the terminal determines the corrosion rate of the corrosion probe as the corrosion rate of the target pipe.
The material of the corrosion probe is the same as that of the target pipeline, so that the corrosion rate of the target pipeline to the corrosion probe by the medium in the target pipeline is the same, and after the corrosion rate of the corrosion probe is determined, the corrosion rate of the corrosion probe can be determined as that of the target pipeline by the terminal.
Step 304: and the terminal determines the corrosion condition of the target pipeline according to the corrosion rate of the target pipeline.
Because the target pipeline suffers from the corruption after, the thickness of target pipeline can change, leads to the transportation medium probably to take place to leak, brings very big potential safety hazard, consequently, in order to adjust the corrosion control scheme in time, reduces unnecessary corrosion control expense and equipment maintenance expense, the terminal can be according to the corruption rate of target pipeline and confirm the corruption condition of target pipeline.
As an example, the terminal can determine the corroded thickness of the target pipeline according to the corrosion rate of the target pipeline, and determine the corrosion condition of the target pipeline according to the corroded thickness.
It is worth noting that, because the corrosion probe and the target pipeline are made of the same material, the rate of the corrosion probe can represent the corrosion rate of the target pipeline, the accuracy of the corrosion rate of the target pipeline is improved, and the reliability of the corrosion condition of the target pipeline is ensured.
In the embodiment of the application, the terminal can acquire the vibration frequency of the corrosion probe at different moments, and because the vibration frequency is related to the mass of the corrosion probe, when the mass of the corrosion probe changes, the vibration frequency of the corrosion probe will change, and the equivalent rigidity of the corrosion probe will not change due to corrosion, so that the terminal can determine the corrosion rate of the corrosion probe through the equivalent rigidity of the corrosion probe and the vibration frequency of the corrosion probe at different moments, and does not need to detect current, inductance or resistance, and does not need to consider the influences of factors such as medium property and temperature. And the material of the target pipeline is the same as that of the corrosion probe, so that the corrosion rate of the corrosion probe can be determined as the corrosion rate of the target pipeline, and the accuracy of determining the corrosion rate of the target pipeline is improved.
Fig. 4 is a schematic structural diagram of a corrosion rate determining apparatus for a pipeline according to an embodiment of the present application, where the corrosion rate determining apparatus for a pipeline may be implemented by software, hardware, or a combination of the two. The corrosion rate determining apparatus of a pipe may include: an acquisition module 401, a first determination module 402 and a second determination module 403.
An obtaining module 401, configured to obtain equivalent stiffness, a first state parameter, and a second state parameter of a corrosion probe in a target pipeline, where the corrosion probe is made of the same material as the target pipeline, the first state parameter is a state parameter of the corrosion probe at a first time, the second state parameter is a state parameter of the corrosion probe at a second time, and the target pipeline is any one of pipelines to be measured;
a first determination module 402 for determining a corrosion rate of the corrosion probe based on the equivalent stiffness of the corrosion probe, the first state parameter, and the second state parameter;
a second determining module 403, configured to determine a corrosion rate of the corrosion probe as a corrosion rate of the target pipe.
In some embodiments, referring to fig. 5, the obtaining module 401 includes:
the first obtaining submodule 4011 is configured to obtain a first mass, a material density, a probe radius, a probe length, and a first vibration frequency of the corrosion probe at the first time;
a calculation submodule 4012, configured to multiply the square of the first vibration frequency by the first mass to obtain an equivalent stiffness of the corrosion probe;
and the second obtaining sub-module 4013 is configured to obtain, through the vibration detector on the target pipeline, a second vibration frequency of the corrosion probe at the second time.
In some embodiments, the first state parameters include a material density, a probe radius, and a probe length of the corrosion probe;
referring to fig. 6, the first determining module 402 includes:
a first determining submodule 4021, configured to determine, according to the equivalent stiffness, the first state parameter, and the second state parameter, a corrosion quality of the corrosion probe, where the corrosion quality is a quality of the corrosion probe corroded within a reference time difference, and the reference time difference is a time difference between the first time and the second time;
the second determining submodule 4022 is configured to determine the corrosion rate according to the corrosion quality, the reference time difference, the material density, the probe radius, and the probe length.
In some embodiments, the first state parameter further comprises a first mass of the corrosion probe, and the second state parameter comprises a second vibration frequency of the corrosion probe;
the first determining sub-module 4021 is further configured to:
dividing the equivalent stiffness by the square of the second vibration frequency to obtain a second mass of the corrosion probe;
and subtracting the second mass from the first mass to obtain the corrosion mass of the corrosion probe.
In some embodiments, the second determining sub-module 4022 is further configured to:
determining the corrosion rate according to the corrosion quality, the reference time difference, the material density, the probe radius and the probe length by using a first formula;
Δm＝ρprobe needle(πR2H-π(R-vt)2H)
Wherein Δ m is the corrosion quality, t is the reference time difference, ρProbe needleThe material density, the R the probe radius, the H the probe length, and the v the corrosion rate.
In some embodiments, the first state parameters include a first vibration frequency, a material density, a probe radius, and a probe length of the corrosion probe, and the second state parameters include a second vibration frequency;
the first determining module 402 is further configured to:
determining the corrosion rate according to the equivalent stiffness, the first vibration frequency, the material density, the probe radius, the probe length and the second vibration frequency by using a second formula;
Figure BDA0002797861920000141
wherein, K iscFor the equivalent stiffness, t is the reference time difference, pProbe needleIs the material density, R is the probe radius, H is the probe length, w0Is the first vibration frequency, w1And v is the corrosion rate, the second vibration frequency.
In the embodiment of the application, the terminal can acquire the vibration frequency of the corrosion probe at different moments, and because the vibration frequency is related to the mass of the corrosion probe, when the mass of the corrosion probe changes, the vibration frequency of the corrosion probe will change, and the equivalent rigidity of the corrosion probe will not change due to corrosion, so that the terminal can determine the corrosion rate of the corrosion probe through the equivalent rigidity of the corrosion probe and the vibration frequency of the corrosion probe at different moments, and does not need to detect current, inductance or resistance, and does not need to consider the influences of factors such as medium property and temperature. And the material of the target pipeline is the same as that of the corrosion probe, so that the corrosion rate of the corrosion probe can be determined as the corrosion rate of the target pipeline, and the accuracy of determining the corrosion rate of the target pipeline is improved.
It should be noted that: the corrosion rate determining apparatus for a pipeline provided in the above embodiment is only illustrated by dividing the above functional modules when determining the corrosion rate of the pipeline, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the apparatus is divided into different functional modules to complete all or part of the above described functions. In addition, the corrosion rate determining apparatus for a pipeline and the corrosion rate determining method for a pipeline 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.
Fig. 7 shows a block diagram of a terminal 700 according to an exemplary embodiment of the present application. The terminal 700 may be: a smart phone, a tablet computer, an MP3 player (Moving Picture Experts Group Audio Layer III, motion video Experts compression standard Audio Layer 3), an MP4 player (Moving Picture Experts Group Audio Layer IV, motion video Experts compression standard Audio Layer 4), a notebook computer, or a desktop computer. Terminal 700 may also be referred to as a user equipment, portable terminal, laptop terminal, desktop terminal, or by other names.
In general, terminal 700 includes: a processor 701 and a memory 702.
The processor 701 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and so on. The processor 701 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 701 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 701 may be integrated with a GPU (Graphics Processing Unit) which is responsible for rendering and drawing the content required to be displayed by the display screen. In some embodiments, the processor 701 may further include an AI (Artificial Intelligence) processor for processing computing operations related to machine learning.
Memory 702 may include one or more computer-readable storage media, which may be non-transitory. Memory 702 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory 702 is used to store at least one instruction for execution by processor 701 to implement the method of corrosion rate determination of a pipeline provided by method embodiments herein.
In some embodiments, the terminal 700 may further optionally include: a peripheral interface 703 and at least one peripheral. The processor 701, the memory 702, and the peripheral interface 703 may be connected by buses or signal lines. Various peripheral devices may be connected to peripheral interface 703 via a bus, signal line, or circuit board. Specifically, the peripheral device includes: at least one of a radio frequency circuit 704, a display screen 705, a camera assembly 706, an audio circuit 707, a positioning assembly 708, and a power source 709.
The peripheral interface 703 may be used to connect at least one peripheral related to I/O (Input/Output) to the processor 701 and the memory 702. In some embodiments, processor 701, memory 702, and peripheral interface 703 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 701, the memory 702, and the peripheral interface 703 may be implemented on a separate chip or circuit board, which is not limited in this embodiment.
The Radio Frequency circuit 704 is used for receiving and transmitting RF (Radio Frequency) signals, also called electromagnetic signals. The radio frequency circuitry 704 communicates with communication networks and other communication devices via electromagnetic signals. The rf circuit 704 converts an electrical signal into an electromagnetic signal to transmit, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 704 comprises: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and so forth. The radio frequency circuitry 704 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocols include, but are not limited to: metropolitan area networks, various generation mobile communication networks (2G, 3G, 4G, and 5G), Wireless local area networks, and/or WiFi (Wireless Fidelity) networks. In some embodiments, the radio frequency circuit 704 may also include NFC (Near Field Communication) related circuits, which are not limited in this application.
The display screen 705 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. When the display screen 705 is a touch display screen, the display screen 705 also has the ability to capture touch signals on or over the surface of the display screen 705. The touch signal may be input to the processor 701 as a control signal for processing. At this point, the display 705 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments, the display 705 may be one, providing the front panel of the terminal 700; in other embodiments, the display 705 can be at least two, respectively disposed on different surfaces of the terminal 700 or in a folded design; in other embodiments, the display 705 may be a flexible display disposed on a curved surface or on a folded surface of the terminal 700. Even more, the display 705 may be arranged in a non-rectangular irregular pattern, i.e. a shaped screen. The Display 705 may be made of LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), or the like.
The camera assembly 706 is used to capture images or video. Optionally, camera assembly 706 includes a front camera and a rear camera. Generally, a front camera is disposed at a front panel of the terminal, and a rear camera is disposed at a rear surface of the terminal. In some embodiments, the number of the rear cameras is at least two, and each rear camera is any one of a main camera, a depth-of-field camera, a wide-angle camera and a telephoto camera, so that the main camera and the depth-of-field camera are fused to realize a background blurring function, and the main camera and the wide-angle camera are fused to realize panoramic shooting and VR (Virtual Reality) shooting functions or other fusion shooting functions. In some embodiments, camera assembly 706 may also include a flash. The flash lamp can be a monochrome temperature flash lamp or a bicolor temperature flash lamp. The double-color-temperature flash lamp is a combination of a warm-light flash lamp and a cold-light flash lamp, and can be used for light compensation at different color temperatures.
The audio circuitry 707 may include a microphone and a speaker. The microphone is used for collecting sound waves of a user and the environment, converting the sound waves into electric signals, and inputting the electric signals to the processor 701 for processing or inputting the electric signals to the radio frequency circuit 704 to realize voice communication. For the purpose of stereo sound collection or noise reduction, a plurality of microphones may be provided at different portions of the terminal 700. The microphone may also be an array microphone or an omni-directional pick-up microphone. The speaker is used to convert electrical signals from the processor 701 or the radio frequency circuit 704 into sound waves. The loudspeaker can be a traditional film loudspeaker or a piezoelectric ceramic loudspeaker. When the speaker is a piezoelectric ceramic speaker, the speaker can be used for purposes such as converting an electric signal into a sound wave audible to a human being, or converting an electric signal into a sound wave inaudible to a human being to measure a distance. In some embodiments, the audio circuitry 707 may also include a headphone jack.
The positioning component 708 is used to locate the current geographic Location of the terminal 700 for navigation or LBS (Location Based Service). The Positioning component 708 can be a Positioning component based on the GPS (Global Positioning System) in the united states, the beidou System in china, the graves System in russia, or the galileo System in the european union.
Power supply 709 is provided to supply power to various components of terminal 700. The power source 709 may be alternating current, direct current, disposable batteries, or rechargeable batteries. When power source 709 includes a rechargeable battery, the rechargeable battery may support wired or wireless charging. The rechargeable battery may also be used to support fast charge technology.
In some embodiments, terminal 700 also includes one or more sensors 710. The one or more sensors 710 include, but are not limited to: acceleration sensor 711, gyro sensor 712, pressure sensor 713, fingerprint sensor 714, optical sensor 715, and proximity sensor 716.
The acceleration sensor 711 can detect the magnitude of acceleration in three coordinate axes of a coordinate system established with the terminal 700. For example, the acceleration sensor 711 may be used to detect components of the gravitational acceleration in three coordinate axes. The processor 701 may control the display screen 705 to display the user interface in a landscape view or a portrait view according to the gravitational acceleration signal collected by the acceleration sensor 711. The acceleration sensor 711 may also be used for acquisition of motion data of a game or a user.
The gyro sensor 712 may detect a body direction and a rotation angle of the terminal 700, and the gyro sensor 712 may cooperate with the acceleration sensor 711 to acquire a 3D motion of the terminal 700 by the user. From the data collected by the gyro sensor 712, the processor 701 may implement the following functions: motion sensing (such as changing the UI according to a user's tilting operation), image stabilization at the time of photographing, game control, and inertial navigation.
Pressure sensors 713 may be disposed on a side frame of terminal 700 and/or underneath display 705. When the pressure sensor 713 is disposed on a side frame of the terminal 700, a user's grip signal on the terminal 700 may be detected, and the processor 701 performs right-left hand recognition or shortcut operation according to the grip signal collected by the pressure sensor 713. When the pressure sensor 713 is disposed at a lower layer of the display screen 705, the processor 701 controls the operability control on the UI interface according to the pressure operation of the user on the display screen 705. The operability control comprises at least one of a button control, a scroll bar control, an icon control, and a menu control.
The fingerprint sensor 714 is used for collecting a fingerprint of a user, and the processor 701 identifies the identity of the user according to the fingerprint collected by the fingerprint sensor 714, or the fingerprint sensor 714 identifies the identity of the user according to the collected fingerprint. Upon identifying that the user's identity is a trusted identity, the processor 701 authorizes the user to perform relevant sensitive operations including unlocking the screen, viewing encrypted information, downloading software, paying, and changing settings, etc. The fingerprint sensor 714 may be disposed on the front, back, or side of the terminal 700. When a physical button or a vendor Logo is provided on the terminal 700, the fingerprint sensor 714 may be integrated with the physical button or the vendor Logo.
The optical sensor 715 is used to collect the ambient light intensity. In one embodiment, the processor 701 may control the display brightness of the display screen 705 based on the ambient light intensity collected by the optical sensor 715. Specifically, when the ambient light intensity is high, the display brightness of the display screen 705 is increased; when the ambient light intensity is low, the display brightness of the display screen 705 is adjusted down. In another embodiment, processor 701 may also dynamically adjust the shooting parameters of camera assembly 706 based on the ambient light intensity collected by optical sensor 715.
A proximity sensor 716, also referred to as a distance sensor, is typically disposed on a front panel of the terminal 700. The proximity sensor 716 is used to collect the distance between the user and the front surface of the terminal 700. In one embodiment, when the proximity sensor 716 detects that the distance between the user and the front surface of the terminal 700 gradually decreases, the processor 701 controls the display 705 to switch from the bright screen state to the dark screen state; when the proximity sensor 716 detects that the distance between the user and the front surface of the terminal 700 is gradually increased, the processor 701 controls the display 705 to switch from the breath-screen state to the bright-screen state.
Those skilled in the art will appreciate that the configuration shown in fig. 7 is not limiting of terminal 700 and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components may be used.
Embodiments of the present application also provide a non-transitory computer-readable storage medium, where instructions of the storage medium, when executed by a processor of a terminal, enable the terminal to perform the method for determining a corrosion rate of a pipeline provided in the above embodiments.
The present application further provides a computer program product containing instructions, which when run on a terminal, causes the terminal to execute the method for determining a corrosion rate of a pipeline provided in the foregoing embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (13)

1. A method of determining a corrosion rate of a pipe, the method comprising:
obtaining equivalent rigidity, a first state parameter and a second state parameter of a corrosion probe in a target pipeline, wherein the corrosion probe is made of the same material as the target pipeline, the first state parameter is a state parameter of the corrosion probe at a first moment, the second state parameter is a state parameter of the corrosion probe at a second moment, and the target pipeline is any one of pipelines to be measured;
determining a corrosion rate of the corrosion probe based on the equivalent stiffness of the corrosion probe, the first state parameter, and the second state parameter;
determining a corrosion rate of the corrosion probe as a corrosion rate of the target pipe.
2. The method of claim 1, wherein said obtaining an equivalent stiffness of a corrosion probe within a target pipe, a first state parameter and a second state parameter of the corrosion probe comprises:
acquiring a first mass, a material density, a probe radius, a probe length and a first vibration frequency of the corrosion probe at the first moment;
multiplying the square of the first vibration frequency by the first mass to obtain the equivalent stiffness of the corrosion probe;
and acquiring a second vibration frequency of the corrosion probe at the second moment by a vibration detector on the target pipeline.
3. The method of claim 1, wherein the first condition parameters include a material density, a probe radius, and a probe length of the corrosion probe;
determining a corrosion rate of the corrosion probe based on the equivalent stiffness of the corrosion probe, the first state parameter, and the second state parameter, comprising:
determining the corrosion quality of the corrosion probe according to the equivalent stiffness, the first state parameter and the second state parameter, wherein the corrosion quality is the quality of the corrosion probe corroded within a reference time difference, and the reference time difference is the time difference between the first time and the second time;
and determining the corrosion rate according to the corrosion quality, the reference time difference, the material density, the probe radius and the probe length.
4. The method of claim 3, wherein the first state parameter further comprises a first mass of the corrosion probe, and the second state parameter comprises a second vibration frequency of the corrosion probe;
determining a corrosion quality of the corrosion probe based on the equivalent stiffness, the first state parameter, and the second state parameter, comprising:
dividing the equivalent stiffness by the square of the second vibration frequency to obtain a second mass of the corrosion probe;
and subtracting the second mass from the first mass to obtain the corrosion mass of the corrosion probe.
5. The method of claim 3, wherein said determining the erosion rate based on the erosion quality, the reference time difference, the material density, the probe radius, and the probe length comprises:
determining the corrosion rate according to the corrosion quality, the reference time difference, the material density, the probe radius and the probe length by using a first formula;
Δm＝ρprobe needle(πR2H-π(R-vt)2H)
Wherein Δ m is the corrosion quality, t is the reference time difference, ρProbe needleThe material density, the R the probe radius, the H the probe length, and the v the corrosion rate.
6. The method of claim 1, wherein the first condition parameters comprise a first vibration frequency, a material density, a probe radius, and a probe length of the corrosion probe, and the second condition comprises a second vibration frequency;
determining a corrosion rate of the corrosion probe based on the equivalent stiffness of the corrosion probe, the first state parameter, and the second state parameter of the corrosion probe, comprising:
determining the corrosion rate according to the equivalent stiffness, the first vibration frequency, the material density, the probe radius, the probe length and the second vibration frequency by using a second formula;
Figure FDA0002797861910000021
wherein, K iscFor the equivalent stiffness, t is the reference time difference, pProbe needleIs the material density, R is the probe radius, H is the probe length, w0Is the first vibration frequency, w1And v is the corrosion rate, the second vibration frequency.
7. An apparatus for determining a corrosion rate of a pipe, the apparatus comprising:
the system comprises an acquisition module, a detection module and a control module, wherein the acquisition module is used for acquiring equivalent rigidity, a first state parameter and a second state parameter of a corrosion probe in a target pipeline, the corrosion probe is made of the same material as the target pipeline, the first state parameter is a state parameter of the corrosion probe at a first moment, the second state parameter is a state parameter of the corrosion probe at a second moment, and the target pipeline is any one of pipelines to be measured;
a first determination module for determining a corrosion rate of the corrosion probe based on the equivalent stiffness of the corrosion probe, the first state parameter, and the second state parameter;
a second determination module for determining a corrosion rate of the corrosion probe as a corrosion rate of the target pipe.
8. The apparatus of claim 7, wherein the acquisition module comprises:
the first acquisition submodule is used for acquiring the first mass, the material density, the probe radius, the probe length and the first vibration frequency of the corrosion probe at the first moment;
a calculation submodule for multiplying the square of the first vibration frequency by the first mass to obtain an equivalent stiffness of the corrosion probe;
and the second acquisition submodule is used for acquiring a second vibration frequency of the corrosion probe at the second moment through the vibration detector on the target pipeline.
9. The apparatus of claim 7, wherein the first condition parameters include a material density, a probe radius, and a probe length of the corrosion probe;
the first determining module includes:
a first determining submodule, configured to determine, according to the equivalent stiffness, the first state parameter, and the second state parameter, a corrosion quality of the corrosion probe, where the corrosion quality is a quality of the corrosion probe corroded within a reference time difference, and the reference time difference is a time difference between the first time and the second time;
and the second determining submodule is used for determining the corrosion rate according to the corrosion quality, the reference time difference, the material density, the probe radius and the probe length.
10. The apparatus of claim 9, wherein the first state parameter further comprises a first mass of the corrosion probe, and the second state parameter comprises a second vibration frequency of the corrosion probe;
the first determination submodule is further configured to:
dividing the equivalent stiffness by the square of the second vibration frequency to obtain a second mass of the corrosion probe;
and subtracting the second mass from the first mass to obtain the corrosion mass of the corrosion probe.
11. The apparatus of claim 9, wherein the second determination submodule is further for:
determining the corrosion rate according to the corrosion quality, the reference time difference, the material density, the probe radius and the probe length by using a first formula;
Δm＝ρprobe needle(πR2H-π(R-vt)2H)
Wherein Δ m is the corrosion quality, t is the reference time difference, ρProbe needleThe material density, R the probe radius, H the probe length, and upsilon the corrosion rate.
12. The apparatus of claim 7, wherein the first condition parameters comprise a first vibration frequency, a material density, a probe radius, and a probe length of the corrosion probe, and the second condition comprises a second vibration frequency;
the first determination module is further to:
determining the corrosion rate according to the equivalent stiffness, the first vibration frequency, the material density, the probe radius, the probe length and the second vibration frequency by using a second formula;
Figure FDA0002797861910000041
wherein, K iscFor the equivalent stiffness, t is the reference time difference, pProbe needleIs the material density, R is the probe radius, HFor the probe length, w0Is the first vibration frequency, w1And upsilon is the second vibration frequency and the corrosion rate.
13. A computer-readable storage medium, characterized in that it has stored thereon instructions which, when executed by a processor, carry out the steps of the method of any one of the preceding claims 1 to 6.
CN202011338459.4A 2020-11-25 2020-11-25 Method and device for determining corrosion rate of pipeline and computer storage medium Pending CN114544473A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116500061A (en) * 2023-06-25 2023-07-28 北京英智数联科技有限公司 Non-invasive pipeline corrosion monitoring system, method and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116500061A (en) * 2023-06-25 2023-07-28 北京英智数联科技有限公司 Non-invasive pipeline corrosion monitoring system, method and device
CN116500061B (en) * 2023-06-25 2023-09-29 北京英智数联科技有限公司 Non-invasive pipeline corrosion monitoring system, method and device

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