CN114877856B - Method, system and equipment for monitoring morphology of GIL pipeline - Google Patents

Method, system and equipment for monitoring morphology of GIL pipeline Download PDF

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CN114877856B
CN114877856B CN202210818637.6A CN202210818637A CN114877856B CN 114877856 B CN114877856 B CN 114877856B CN 202210818637 A CN202210818637 A CN 202210818637A CN 114877856 B CN114877856 B CN 114877856B
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support
gil
settlement
strain
pipeline
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CN114877856A (en
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杨毅
廖伟华
郑金杯
马欣
谢志松
黄丰
何建东
吴锦钊
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Foshan Power Supply Bureau of Guangdong Power Grid Corp
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2113/00—Details relating to the application field
    • G06F2113/14—Pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/30—Computing systems specially adapted for manufacturing

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Abstract

The invention relates to the technical field of high-voltage electric appliance overhaul, and provides a method, a system and equipment for monitoring the form of a GIL pipeline, wherein the method comprises the following steps: monitoring the strain of the GIL pipeline at each support; calculating the actual settlement of the support to be measured by a preset settlement model through the strain; the settlement model is established according to the relation between the actual settlement amount of each support and the strain of the GIL pipeline of all the supports; and the actual settlement is the support settlement corresponding to the strain accumulated in the GIL pipelines at all the supports. The method for calculating the sedimentation of the GIL pipeline by the sedimentation of the gallery, which is commonly used in the field, is abandoned, the more accurate sedimentation amount of the support of the GIL pipeline can be obtained, and the cost for arranging the sensor is reduced.

Description

Method, system and equipment for monitoring morphology of GIL pipeline
Technical Field
The invention relates to the technical field of maintenance of power transmission devices, in particular to a method, a system and equipment for monitoring the form of a GIL pipeline.
Background
GIL is a gas insulated metal enclosed transmission line, and its inside is provided with the fragile transmission line that the insulator supported, and GIL pipe installation is in the piping lane, and the piping lane is buried underground. During the long-term service of GIL pipeline, the piping lane probably takes place inhomogeneous settlement, and the GIL pipeline is installed on the support that the piping lane stretches out, and after the inhomogeneous settlement appeared, the GIL pipeline also can take place to warp, and the deformation of GIL pipeline probably leads to its inner structure to take place to destroy, consequently is necessary to monitor the GIL pipeline.
The monitoring method in the prior art mainly aims at a pipe gallery structure, but the uniform support continuous structure of the pipe gallery is greatly different from a plurality of support continuous support beam structures of the GIL pipeline in the aspect of mechanical characteristics, and the settlement of the GIL pipeline cannot be accurately calculated. And the conventional displacement detection method is difficult to accurately detect the settlement of the GIL pipeline, the cost for monitoring the stress through the pipeline full-length fiber bragg grating is high, and the GIL pipeline is provided with a flange joint and is difficult to arrange the fiber bragg grating.
Disclosure of Invention
The invention provides a form monitoring method of a GIL pipeline, which is used for solving the technical problem that the settlement of the GIL pipeline is difficult to measure and calculate.
The invention provides a form monitoring method of a GIL pipeline in a first aspect, which comprises the following steps:
monitoring the strain of the GIL pipeline at each support;
calculating the actual settlement of the support to be measured by a preset settlement model through the strain; the settlement model is established according to the relation between the actual settlement amount of each support and the strain of the GIL pipeline of all the supports; and the actual settlement is the support settlement corresponding to the strain accumulated in the GIL pipelines at all the supports.
Optionally, the actual settlement amount of the to-be-measured support is calculated by the preset settlement model through the strain, and specifically:
obtaining the correlation coefficient of single support settlement and GIL pipeline strain at each support through finite element modeling simulation;
and substituting the strain and the correlation coefficient into a settlement model to obtain the actual settlement of the support to be measured.
Optionally, the obtaining, through finite element modeling simulation, a correlation coefficient between single support settlement and GIL pipeline strain at each support includes:
establishing a finite element model of the GIL pipeline, simulating the settlement of a single support, and acquiring the strain correlation coefficient of the settled support and the GIL pipeline at each support in the finite element model;
establishing a correlation coefficient model, wherein the correlation coefficient model specifically comprises the following steps:
Figure 255197DEST_PATH_IMAGE001
wherein,a ij is a firstiSettling of the support andjcorrelation coefficient of GIL pipe strain at each seat,bin order to be a self-correlation coefficient,cin order to separate the correlation coefficients of the intervals,dis the attenuation coefficient;
and obtaining the correlation coefficient of the settlement of the support to be tested and the strain of the GIL pipeline at each support according to the correlation coefficient model.
Optionally, the sedimentation model is:
Figure 960984DEST_PATH_IMAGE002
wherein,Δiis as followsiThe actual settling amount of the individual support is,ε j is as followsjThe strain of the GIL pipe at each seat,nthe number of seats for the GIL pipe,lis the span between the adjacent support seats,Dthe diameter of the GIL tube.
Optionally, after calculating the actual sedimentation amount of the to-be-measured support through the strain with a preset sedimentation model, the method further includes:
acquiring a calibration settlement amount at a preset position on a corridor; the preset position of the gallery corresponds to the support; and comparing the calibrated settlement amount with the actual settlement amount of the corresponding support, and correcting the actual settlement amount to obtain the monitored settlement amount.
Optionally, the method for monitoring the shape of the GIL pipe further includes:
calculating bending moment of the GIL pipeline and deformation state of the internal material according to the strain of the GIL pipeline at each support; and if the bending moment exceeds a bending moment threshold value or the deformation state reaches a damage state, an alarm is given.
A second aspect of the present application provides a morphology monitoring system of a GIL pipe, comprising:
the strain monitoring module is used for monitoring the strain of the GIL pipeline at each support;
the settlement monitoring module is used for calculating the actual settlement of the support to be measured through the strain by using a preset settlement model; the settlement model is established according to the relation between the actual settlement amount of each support and the strain of the GIL pipeline of all the supports; and the actual settlement is the support settlement corresponding to the strain accumulated in the GIL pipelines at all the supports.
Optionally, the sedimentation amount monitoring module specifically includes:
the correlation coefficient module is used for acquiring the correlation coefficients of single support settlement and GIL pipeline strain at each support through finite element modeling simulation;
and the settlement calculation module substitutes the strain and the correlation coefficient into a settlement model to obtain the actual settlement of the support to be measured.
Optionally, the morphology monitoring system of the GIL pipe further includes:
the pipeline deformation monitoring module is used for calculating bending moment of the GIL pipeline and deformation state of the internal material according to strain of the GIL pipeline at each support; and if the bending moment exceeds a bending moment threshold value or the deformation state reaches a damage state, an alarm is given.
A third aspect of the present application provides a morphology monitoring apparatus of a GIL pipe, the apparatus comprising a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the method for morphology monitoring of a GIL pipe according to any one of the first aspect of the present invention according to instructions in the program code.
According to the technical scheme, the invention has the following advantages: monitoring the strain of the GIL pipeline at each support; calculating the actual settlement of the support to be measured by a preset settlement model through the strain; the settlement model is established according to the relation between the actual settlement amount of each support and the strain of the GIL pipeline of all the supports; and the actual settlement is the support settlement corresponding to the strain accumulated in the GIL pipelines at all the supports. The settlement of the GIL pipeline support can be converted by using the existing strain gauge for measuring and calculating the deformation of the GIL pipeline, a sensor for measuring the settlement is not required to be additionally arranged, a method for calculating the settlement of the GIL pipeline by using the settlement of a gallery, which is commonly used in the field, is abandoned, the more accurate settlement of the GIL pipeline support can be obtained, and the cost for arranging the sensor is reduced.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a flow chart of a method for monitoring the morphology of a GIL pipeline;
FIG. 2 is a graph of a calculation of sedimentation for a GIL pipeline;
FIG. 3 is a finite element model of a GIL pipeline;
FIG. 4 is a flow diagram of a GIL pipeline settlement check and deformation monitoring process;
FIG. 5 is a general flow chart of a method of morphology monitoring of a GIL pipeline;
FIG. 6 is a schematic diagram of a system for monitoring the morphology of a GIL pipeline.
Detailed Description
The embodiment of the invention provides a form monitoring method of a GIL pipeline, which is used for solving the technical problem that buses stop simultaneously when a GIS equipment breaker is overhauled.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for monitoring a shape of a GIL pipe according to an embodiment of the present invention, which includes:
s100, monitoring the strain of the GIL pipeline at each support;
it should be noted that, when the support is settled, the most obvious places of strain are above and below the support point compared with the side surface; since the sensor cannot be arranged on the lower part of the GIL pipeline because the sensor is tightly attached to the support, in the embodiment, the vibrating wire strain gauges are arranged on the supports on the upper surface of the GIL pipeline to detect the strain of the GIL pipeline on the supports.
S200, calculating the actual settlement of the support to be measured through the strain by using a preset settlement model; the settlement model is established according to the relation between the actual settlement amount of each support and the strain of the GIL pipeline of all the supports; the actual settlement amount is the support settlement amount corresponding to the strain accumulated in the GIL pipelines at all the supports;
it should be noted that, the settlement of each support of the GIL pipe may cause the deformation and bending of the GIL pipe, and therefore, the settlement of the support of the GIL pipe is related to the strain, and further, because the GIL pipe is a communicated whole, the strain of the GIL pipe of the support itself corresponding to the settlement of the support itself may not reflect the actual settlement of the support, and the strain of the GIL pipe at all the supports needs to be synthesized to obtain the actual settlement, that is, after the support at one position of the GIL pipe settles, the strain of the support points at all the positions of the GIL pipe may be correspondingly reflected, and only the difference in height may be provided according to the interval relationship between the supports;
therefore, conversely, a settlement model which shows the relationship between the actual settlement amount of each support and the strains of the GIL pipelines at all the supports can be established according to the strains at the support points and by combining the strains with the settlement relationship of each support, the strains of the whole GIL pipeline are accumulated by each support, and the actual settlement amount of each support is calculated in turn.
In the maintenance monitoring application of the existing GIL pipeline, if the monitoring of the GIL pipeline is carried out only by a settlement monitoring method aiming at a gallery which is a continuous supporting structure, the settlement of a support of the GIL pipeline cannot be correctly calculated.
The above is a detailed description of a first embodiment of a method for monitoring the morphology of a GIL pipe according to the present application, and the following is a detailed description of a second embodiment of a method for monitoring the morphology of a GIL pipe according to the present application.
Referring to fig. 2, fig. 2 is a flow chart of settlement calculation of a GIL pipe according to an embodiment of the present invention; in step S200 of the foregoing embodiment, obtaining the actual sedimentation amount of each support according to the strain by using a preset sedimentation model specifically includes:
s210, obtaining the correlation coefficient of single support settlement and GIL pipeline strain at each support through finite element modeling simulation;
it should be noted that the correlation coefficient of support settlement to GIL pipeline strain at each support is related to the support interval, that is, the relationship between the correlation coefficient and the number of supports at intervals between supports needs to be obtained, including the influence of support settlement on the strain corresponding to the support itself.
Further, referring to fig. 3, fig. 3 is a finite element model of GIL pipe according to an embodiment of the present invention, wherein 100 is a model without sedimentation, 200 is a model with sedimentation, and 210 is the secondiA support, 220 is the secondi+1A support, 230 is the secondi+2A support 230 for the applied sedimentationΔi. Calculating the influence of support settlement on the strain of the GIL pipeline at each support under different intervals through a finite element model; establishing a correlation coefficient model by using the influence, wherein the correlation coefficient model specifically comprises the following steps:
Figure 109200DEST_PATH_IMAGE001
wherein,a ij is as followsjA support is toiThe correlation coefficient of each support is determined by the correlation coefficient,bin order to be a self-correlation coefficient,cin order to separate the correlation coefficients of the intervals,dis the attenuation coefficient. As can be appreciated, the first and second,the strain of the GIL pipeline at the same support is different from the related influence of the self support settlement and the related influence of other support settlement, and the related influence is attenuated along with the increase of the interval relation between the support where the strain is located and the support to be measured, so that the autocorrelation coefficients are obtained respectivelybInterval correlation coefficientcAnd attenuation coefficientd。
Further, the finite element model adopts the elongated linear beam element as the element, and the first element is arranged in the elongated linear beam elementiApplying settlement at each supportΔiCalculating the strain at the other support, can be obtainediStrain of GIL pipe at individual standε i Comprises the following steps:
Figure 838122DEST_PATH_IMAGE003
first, thei+1Strain of GIL pipeline at individual supportε i+1 Comprises the following steps:
Figure 305486DEST_PATH_IMAGE004
first, thei+2Strain of GIL pipeline at individual supportε i+2 Comprises the following steps:
Figure 803463DEST_PATH_IMAGE005
first, thei+3Strain of GIL pipeline at individual supportε i+3 Comprises the following steps:
Figure 637427DEST_PATH_IMAGE006
it can be seen that the autocorrelation coefficient b in this embodiment is-2/9, and the interval correlation coefficientc1/3, attenuation coefficientdIs 3.47; the established correlation coefficient model is as follows:
Figure 401115DEST_PATH_IMAGE007
and S220, substituting the strain and the correlation coefficient into a settlement model to obtain the actual settlement of the support to be measured.
It should be noted that the settlement model calculates to accumulate the strain of the GIL pipe at each support, and calculates the actual settlement of each support through the corresponding correlation coefficient.
Further, the sedimentation model is as follows:
Figure 345937DEST_PATH_IMAGE002
wherein,Δiis as followsiThe actual settling amount of the individual support is,ε j is as followsjThe strain of the GIL pipe at each seat,nthe number of seats for the GIL pipe,lis the span between the adjacent support seats,Dthe diameter of the GIL tube.
The monitored strain of the GIL pipeline at the support is the axial strain of the pipeline, namely the strain is reacted by tension-compression deformation, the effect of the settlement model is to convert the axial strain into the settlement of the support in the vertical direction, and the span between the adjacent supports in the settlement modellAnd diameter of GIL pipeDCorresponding to axial and radial strain transformation; after the correlation coefficient is substituted into the settlement model, the corresponding settlement under the influence of the accumulated strain at each support can be calculated for each support, and the actual settlement of each support is obtained.
In the embodiment, the actual settlement amount of each support is obtained by obtaining the correlation coefficient of support settlement to the strain of the GIL pipeline at each support at different intervals and substituting the strain and the correlation coefficient into the settlement model, the whole GIL pipeline is considered, the strain of the GIL pipeline at each support is accumulated, the actual settlement amount of each support is calculated, the settlement condition of the GIL pipeline is monitored more accurately, and the use safety of the GIL pipeline is guaranteed.
The above is a detailed description of the second embodiment of the method for monitoring the morphology of the GIL pipe provided by the present application, and the following is a detailed description of the third embodiment of the method for monitoring the morphology of the GIL pipe provided by the present application;
referring to fig. 4, fig. 4 is a flow chart illustrating settlement verification and deformation monitoring of GIL pipelines according to an embodiment of the present invention, and a method for monitoring the morphology of GIL pipelines further includes:
s300, acquiring a calibration settlement amount at a preset position on the corridor; the preset position of the gallery corresponds to the support; and comparing the calibrated settlement amount with the actual settlement amount of the corresponding support, and correcting the actual settlement amount to obtain the monitored settlement amount.
It should be noted that, in this embodiment, a hydrostatic level is arranged at the position of the corridor corresponding to the position of each support at an interval of 5 supports, and the hydrostatic level directly measures the amount of the caldron sedimentation of the corridor, and the amount of the caldron sedimentation is compared with the actual amount of the support at the corresponding position, so that it can be understood that the GIL pipe is arranged in the corridor, and thus the amount of the caldron sedimentation of the corridor is inevitably smaller than the actual amount of the settlement of the support, so as to correct the actual amount of the settlement. The number of the supports at intervals of the static level can be set according to actual conditions, and can also be set at preset interval distances.
Further, whether the settlement exceeds a settlement threshold value or not can be judged according to the monitored settlement obtained in the step S300, and if yes, an alarm is given. And when the GIL pipeline is maintained, the support can be recovered according to the obtained monitoring settlement.
S400, calculating bending moment of the GIL pipeline and deformation state of the internal material according to strain of the GIL pipeline at each support; if the bending moment exceeds a bending moment threshold value or the deformation state reaches a damage state, an alarm is sent;
it should be noted that, according to the strain of the GIL pipe at each support, the bending moment of the GIL pipe can be converted to obtain the deformation condition of the GIL pipe, then the deformation state of the inner brittle material is obtained, and finally, according to the deformation state of the brittle material, whether damage occurs and how maintenance is needed are judged. If the bending moment exceeds the bending moment threshold value or the deformation state reaches a damage state, the reliability of equipment in the GIL pipeline is affected, and an alarm needs to be sent to a worker.
Further, please refer to fig. 5, fig. 5 is a general flowchart of a method for monitoring a shape of a GIL pipeline, and the steps in fig. 5 may refer to the corresponding processes in the foregoing embodiments, which are not described herein again.
In the embodiment, the calibration settlement amount at the preset position on the corridor is obtained; the preset position of the gallery corresponds to the support; the method comprises the steps of calibrating the sedimentation amount, comparing the calibrated sedimentation amount with the actual sedimentation amount of the corresponding support, correcting the actual sedimentation amount to obtain a monitored sedimentation amount, correcting the sedimentation of the GIL pipeline support calculated by strain, calculating the bending moment of the GIL pipeline and the deformation state of an internal material according to the strain of the GIL pipeline at each support, enabling the strain to be reused to calculate the deformation condition, further monitoring the form of the GIL pipeline, improving the detection efficiency and precision and reducing the cost of using a sensor.
The above is a detailed description of a third embodiment of the method for monitoring the morphology of the GIL pipe according to the present application, and the following is a detailed description of a system for monitoring the morphology of the GIL pipe according to the second aspect of the present application.
Referring to fig. 6, fig. 6 is a schematic diagram of a system for monitoring the morphology of a GIL pipe. The embodiment provides a form monitoring system of GIL pipeline, includes:
the strain monitoring module 10 is used for monitoring the strain of the GIL pipeline at each support;
in addition, a vibrating wire strain gauge sensor is provided on the upper surface of each support of the GIL pipe to detect strain of the GIL pipe at each support.
The settlement monitoring module 20 is used for obtaining the actual settlement of each support according to the strain by using a preset settlement model; the settlement model is established according to the relation between the actual settlement at each support and the GIL pipeline strain at all the supports; and the actual settlement amount is the settlement amount of the support corresponding to the accumulated strain at all the supports.
Further, the sedimentation amount monitoring module 20 specifically includes:
the correlation coefficient module 21 is configured to obtain correlation coefficients of the support settlement to be measured and the GIL pipeline strain at each support through finite element modeling simulation;
the method includes the steps that a finite element model of the GIL pipeline support is established, support settlement is simulated, and correlation coefficients of settled supports and GIL pipeline strain at each support in the finite element model are obtained;
establishing a correlation coefficient model, wherein the correlation coefficient model specifically comprises the following steps:
Figure 10006DEST_PATH_IMAGE001
wherein,a ij is as followsiSettling of the support andjcorrelation coefficient of GIL pipe strain at each seat,bin order to be a self-correlation coefficient,cin order to be able to space the correlation coefficient,dis the attenuation coefficient; obtaining the correlation coefficient of the settlement of the support to be tested and the strain of the GIL pipeline at each support according to the correlation coefficient model
And the settlement amount calculation module 22 is used for substituting the strain and the correlation coefficient into a settlement model to obtain the actual settlement amount of each support.
It should be noted that the sedimentation model is:
Figure 14871DEST_PATH_IMAGE002
wherein,Δiis as followsiThe actual settling volume of each support is,ε j is as followsjThe strain of the GIL pipe at each seat,nthe number of seats for the GIL pipe,lis the span between the adjacent support seats,Dthe diameter of the GIL tube.
The settlement correction module 23 is configured to compare the calibrated settlement with an actual settlement of the corresponding support, and correct the actual settlement to obtain a monitored settlement;
further, the settlement amount calculating module 23 may determine whether the settlement amount exceeds a settlement threshold according to the obtained monitored settlement amount, and if so, send an alarm. And when the GIL pipeline is maintained, the support can be recovered according to the obtained monitoring settlement.
Further, the form monitoring system of GIL pipeline still includes:
the pipeline deformation monitoring module 30 is used for calculating bending moment of the GIL pipeline and deformation state of the internal material according to strain of the GIL pipeline at each support; and if the bending moment exceeds a bending moment threshold value or the deformation state reaches a damage state, an alarm is given.
Through the form monitoring system who arranges the GIL pipeline in the GIL pipeline, monitor the deformation condition and the settlement state of GIL pipeline, can obtain the monitoring settlement volume of each support through the strain of real time supervision's GIL pipeline support department to and the bending moment of GIL pipeline and the deformation state of inside material, report to the police through monitoring whether it reaches the threshold value, guarantee the reliable operation of GIL pipeline.
The third aspect of the present application further provides a morphology monitoring apparatus based on a GIL pipeline, including a processor and a memory: the memory is used for storing the program codes and transmitting the program codes to the processor; the processor is used for executing the morphology monitoring method of the GIL pipeline according to instructions in the program codes.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (7)

1. A morphology monitoring method of a GIL pipeline is characterized by comprising the following steps:
monitoring the strain of the GIL pipeline at each support;
obtaining the correlation coefficient of single support settlement and GIL pipeline strain at each support through finite element modeling simulation; substituting the strain and the correlation coefficient into a settlement model to obtain the actual settlement of the support to be measured; the settlement model is as follows:
Figure 844795DEST_PATH_IMAGE001
wherein,Δiis as followsiThe actual settling amount of the individual support is,ε j is a firstjThe strain of the GIL pipe at each seat,nthe number of seats for the GIL pipe,lis the span between the adjacent support seats,Dis the diameter of the GIL pipe and,a ij is as followsiSettling of the support andjcorrelation coefficient of GIL pipeline strain at each support; and the actual settlement is the support settlement corresponding to the strain accumulated in the GIL pipelines at all the supports.
2. The morphology monitoring method of the GIL pipeline according to claim 1, wherein the obtaining of the correlation coefficient of the single support settlement and the strain of the GIL pipeline at each support through finite element modeling simulation comprises:
establishing a finite element model of the GIL pipeline, simulating the settlement of a single support, and acquiring the strain correlation coefficient of the settled support and the GIL pipeline at each support in the finite element model;
establishing a correlation coefficient model, wherein the correlation coefficient model specifically comprises the following steps:
Figure 562215DEST_PATH_IMAGE002
wherein,bin order to be a self-correlation coefficient,cin order to be able to space the correlation coefficient,dis the attenuation coefficient;
and obtaining the correlation coefficient of the settlement of the support to be tested and the strain of the GIL pipeline at each support according to the correlation coefficient model.
3. The morphology monitoring method for the GIL pipeline according to claim 1, wherein after obtaining the actual settlement amount of the support to be measured, the method further comprises:
acquiring a calibration settlement amount at a preset position on a corridor; the preset position of the gallery corresponds to the support; and comparing the calibrated settlement amount with the actual settlement amount of the corresponding support, and correcting the actual settlement amount to obtain the monitored settlement amount.
4. The morphology monitoring method for GIL pipelines according to claim 1, further comprising:
calculating bending moment of the GIL pipeline and deformation state of the internal material according to strain of the GIL pipeline at each support; and if the bending moment exceeds a bending moment threshold value or the deformation state reaches a damage state, an alarm is given.
5. A morphology monitoring system of a GIL pipeline, comprising:
the strain monitoring module is used for monitoring the strain of the GIL pipeline at each support;
a sedimentation amount monitoring module comprising: the correlation coefficient module is used for acquiring the correlation coefficients of single support settlement and GIL pipeline strain at each support through finite element modeling simulation; the settlement calculation module is used for substituting the strain and the correlation coefficient into a settlement model to obtain the actual settlement of the support to be measured; the settlement model is as follows:
Figure 895108DEST_PATH_IMAGE001
wherein,Δiis as followsiThe actual settling volume of each support is,ε j is as followsjThe strain of the GIL pipe at each seat,nthe number of seats for the GIL pipe,lis the span between the adjacent support seats,Dis the diameter of the GIL pipe and,a ij is as followsiSettling of the support andjcorrelation coefficient of GIL pipeline strain at each support; and the actual settlement is the support settlement corresponding to the strain accumulated in the GIL pipelines at all the supports.
6. The morphology monitoring system of a GIL pipe of claim 5, further comprising:
the pipeline deformation monitoring module is used for calculating bending moment of the GIL pipeline and deformation state of the internal material according to strain of the GIL pipeline at each support; and if the bending moment exceeds a bending moment threshold value or the deformation state reaches a damage state, an alarm is given.
7. A morphology monitoring apparatus of a GIL pipe, the apparatus comprising a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the method for morphology monitoring of a GIL pipe of any one of claims 1-4 according to instructions in the program code.
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