CN113420479A - GIS pipeline compensation corrugated pipe monitoring and evaluating method - Google Patents
GIS pipeline compensation corrugated pipe monitoring and evaluating method Download PDFInfo
- Publication number
- CN113420479A CN113420479A CN202110693586.4A CN202110693586A CN113420479A CN 113420479 A CN113420479 A CN 113420479A CN 202110693586 A CN202110693586 A CN 202110693586A CN 113420479 A CN113420479 A CN 113420479A
- Authority
- CN
- China
- Prior art keywords
- corrugated pipe
- compensation
- gis pipeline
- compensating
- monitoring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/14—Pipes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/08—Thermal analysis or thermal optimisation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
Abstract
The invention discloses a GIS pipeline compensation corrugated pipe monitoring and evaluating method, which comprises the following steps: and monitoring the displacement of the flanges at the two sides of the corrugated pipe along the axial direction of the pipeline. The monitoring and evaluation method is used, and has the following advantages: the compensation corrugated pipe has the advantages that the displacement measurement mode of the compensation corrugated pipe is non-contact, the environmental adaptability and the weather resistance are good, and no additional acting force is generated on the structure; the stress deformation calculation of the GIS pipeline compensation section under the action of temperature difference comprehensively considers factors such as fixed support, internal pressure and the like, and the calculation result is accurate by taking measured data as input parameters; the compensation bellows fatigue damage is calculated based on the actual displacement variation of the bellows two-side flange in each fatigue load period as the finite element model input condition, and the calculation result is accurate, reliable and reliable; the operation state of the compensation corrugated pipe can be monitored and evaluated on line, the compensation corrugated pipe is convenient and efficient, potential risks are found and reported in time, and the problem that power supply safety is seriously threatened is solved.
Description
Technical Field
The invention relates to the technical field of transformer substation safety, in particular to a GIS pipeline compensation corrugated pipe monitoring and evaluating method.
Background
GIS pipelines are used in a large amount in power transmission and transformation equipment of a power grid due to the advantages of the GIS pipelines, the GIS pipelines mainly comprise cylinders, sliding supports, fixed supports, corrugated pipes and the like, in recent years, accidents related to the GIS pipelines, such as the problems of cylinder pulling crack, fixed support cracking, sliding support blocking, flange surface air leakage and the like, are reported in many places, and power supply safety is seriously threatened.
Through the analysis investigation discovery, the compensation bellows of installation all has the work anomaly of different degree on the accident GIS pipeline that takes place, and compensation bellows main function is to compensate GIS pipeline expend with heat and contract with cold, if appear that the slip support is obstructed, fixed support rigidity is not enough or bellows design installation unusual then can appear the bellows actual compensation volume and normal condition under the compensation volume mismatch, lead to the incident that influences equipment operation such as barrel stretch-breaking, flange face gas leakage then.
With the development of the internet, the sensor technology, the machine vision and the finite element technology, the GIS pipeline barrel temperature measurement based on the sensor technology, the compensation corrugated pipe displacement measurement based on the image recognition and the GIS pipeline temperature difference stress deformation calculation based on the finite element calculation can realize the monitoring and evaluation of the running state of the compensation corrugated pipe by combining the internet technology under the condition of not influencing the work of the GIS pipeline, discover the working abnormity of the GIS pipeline mechanical structure in time and ensure the power supply safety.
Disclosure of Invention
The invention aims to provide a GIS pipeline compensation corrugated pipe monitoring and evaluating method, which has the advantages that the displacement measuring mode of the compensation corrugated pipe is non-contact, the environmental adaptability and the weather resistance are good, and no additional acting force is generated on the structure; the stress deformation calculation of the GIS pipeline compensation section under the action of temperature difference comprehensively considers factors such as fixed support, internal pressure and the like, and the calculation result is accurate by taking measured data as input parameters; the compensation bellows fatigue damage is calculated based on the actual displacement variation of the bellows two-side flange in each fatigue load period as the finite element model input condition, and the calculation result is accurate, reliable and reliable; the running state of the compensation corrugated pipe can be monitored and evaluated on line, the compensation corrugated pipe is convenient and efficient, potential risks can be found and reported in time, and the problem that power supply safety is seriously threatened is solved.
In order to achieve the purpose, the invention provides the following technical scheme: a GIS pipeline compensation corrugated pipe monitoring and evaluating method comprises the following steps:
1) monitoring the displacement of flanges on two sides of the corrugated pipe along the axial direction of the pipeline;
2) a temperature monitoring device is arranged on the GIS pipeline cylinder;
3) the temperature displacement monitoring devices can be configured with wireless transmission modules, image and temperature data are transmitted to a PC (personal computer) end in the local area network in a wired or wireless mode, and the processed data are transmitted to a cloud server in a wireless mode or are directly transmitted to a cloud for data processing;
4) obtaining axial displacement of flange surfaces on two sides of the corrugated pipe along with temperature change at a PC end or a cloud end in a local area network through image recognition;
5) based on axial displacement and temperature change data of flange surfaces on two sides of the compensating corrugated pipe, performing temperature difference stress deformation calculation on the GIS pipeline compensating section structure by adopting a finite element method to obtain axial displacement of the GIS pipeline compensating section and the flange edge of the corrugated pipe mounting part and stress distribution of the compensating corrugated pipe under given temperature change;
6) the data processing comprises the steps of comparing and analyzing the axial displacement calculation value of the flange surface of the installation position of the corrugated pipe and the GIS pipeline barrel compensation section obtained by adopting a finite element method with an actual measurement value, and evaluating whether the expansion with heat and the contraction with cold of the GIS pipeline are normally carried out or not;
7) the data processing also comprises fatigue life calculation of the stress distribution of the compensating corrugated pipe, and whether the residual service life of the compensating corrugated pipe meets the operation and maintenance requirements is evaluated;
8) and transmitting the evaluation result to an operation and maintenance manager information terminal according to the risk level.
Preferably, the axial displacement monitoring of the flange surfaces on the two sides of the compensation bellows can be performed by adopting a mode based on image recognition, and the step 1) includes:
1) installing a displacement monitoring device based on image recognition at the GIS pipeline compensation corrugated pipe;
2) wherein the image acquisition device is arranged on the foundation on the side surface of the corrugated pipe;
3) target targets are arranged on flange surfaces at two ends of the compensation corrugated pipe and used for assisting subsequent image recognition, if the flange outline can be directly recognized with high precision, the target targets can be eliminated.
Preferably, based on the axial displacement and temperature change data of the flange surfaces on the two sides of the compensation bellows, the finite element method is adopted to perform temperature difference stress deformation calculation on the structure of the GIS pipeline compensation section, so as to obtain the axial displacement of the GIS pipeline compensation section and the flange edge of the corrugated pipe installation part and the stress distribution of the compensation bellows under the given temperature change amount, and the step 5) comprises the following steps:
1) the input conditions used for finite element calculation and analysis are respectively axial displacement of flange surfaces on two sides of the compensation corrugated pipe and temperature change data as actual measurement results;
2) when the GIS pipeline compensation section expands with heat and contracts with cold, actual measured temperature data, such as the lowest temperature and the highest temperature of days or months, are taken as input conditions, the compensation corrugated pipe and the related GIS pipeline compensation section are taken, and finite element modeling is usually carried out from the compensation corrugated pipe to a fixed support section at a certain distance;
3) when the stress distribution of the compensating corrugated pipe is calculated, the actual axial displacement measurement data of the flange surfaces on the two sides of the compensating corrugated pipe are taken as input conditions, the displacement data of the highest temperature point and the lowest temperature point every day are selected, and only finite element calculation analysis is carried out on the corrugated pipe to obtain the stress distribution on the corrugated pipe.
Compared with the prior art, the invention has the following beneficial effects:
1. the monitoring and evaluation method is used, and has the following advantages: the compensation corrugated pipe has the advantages that the displacement measurement mode of the compensation corrugated pipe is non-contact, the environmental adaptability and the weather resistance are good, and no additional acting force is generated on the structure; the stress deformation calculation of the GIS pipeline compensation section under the action of temperature difference comprehensively considers factors such as fixed support, internal pressure and the like, and the calculation result is accurate by taking measured data as input parameters; the compensation bellows fatigue damage is calculated based on the actual displacement variation of the bellows two-side flange in each fatigue load period as the finite element model input condition, and the calculation result is accurate, reliable and reliable; the operation state of the compensation corrugated pipe can be monitored and evaluated on line, the compensation corrugated pipe is convenient and efficient, potential risks are found and reported in time, and the problem that power supply safety is seriously threatened is solved.
Drawings
FIG. 1 is a schematic view of a compensation bellows flange displacement monitoring image acquisition;
FIG. 2 is a schematic diagram of finite element modeling of a GIS pipeline compensation corrugated pipe and a compensation section thereof;
FIG. 3 is a diagram showing the axial displacement of the compensation bellows and the compensation section of the compensation bellows under a certain temperature variation;
FIG. 4 is a graph of axial displacement of a compensating bellows of a GIS pipeline under a certain temperature variation;
FIG. 5 is a diagram of the maximum principal stress distribution of a GIS pipeline compensating bellows under the action of axial displacement load and other working loads.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a method for monitoring and evaluating a compensating bellows of a GIS pipeline includes the following steps:
1) monitoring the displacement of flanges on two sides of the corrugated pipe along the axial direction of the pipeline;
2) a temperature monitoring device is arranged on the GIS pipeline cylinder;
3) the temperature displacement monitoring devices can be configured with wireless transmission modules, image and temperature data are transmitted to a PC (personal computer) end in the local area network in a wired or wireless mode, and the processed data are transmitted to a cloud server in a wireless mode or are directly transmitted to a cloud for data processing;
4) obtaining axial displacement of flange surfaces on two sides of the corrugated pipe along with temperature change at a PC end or a cloud end in a local area network through image recognition;
5) based on axial displacement and temperature change data of flange surfaces on two sides of the compensating corrugated pipe, performing temperature difference stress deformation calculation on the GIS pipeline compensating section structure by adopting a finite element method to obtain axial displacement of the GIS pipeline compensating section and the flange edge of the corrugated pipe mounting part and stress distribution of the compensating corrugated pipe under given temperature change;
6) the data processing comprises the steps of comparing and analyzing the axial displacement calculation value of the flange surface of the installation position of the corrugated pipe and the GIS pipeline barrel compensation section obtained by adopting a finite element method with an actual measurement value, and evaluating whether the expansion with heat and the contraction with cold of the GIS pipeline are normally carried out or not;
7) the data processing also comprises fatigue life calculation of the stress distribution of the compensating corrugated pipe, and whether the residual service life of the compensating corrugated pipe meets the operation and maintenance requirements is evaluated;
8) and transmitting the evaluation result to an operation and maintenance manager information terminal according to the risk level.
The axial displacement monitoring of the flange surfaces on the two sides of the compensation corrugated pipe can be carried out in a mode based on image recognition, and the step 1) comprises the following steps:
1) installing a displacement monitoring device based on image recognition at the GIS pipeline compensation corrugated pipe;
2) wherein the image acquisition device is arranged on the foundation on the side surface of the corrugated pipe;
3) target targets are arranged on flange surfaces at two ends of the compensation corrugated pipe and used for assisting subsequent image recognition, if the flange outline can be directly recognized with high precision, the target targets can be eliminated.
Based on the axial displacement and the temperature change data of the flange surfaces on the two sides of the compensating corrugated pipe, the finite element method is adopted to calculate the temperature difference stress deformation of the GIS pipeline compensating section structure, the axial displacement of the GIS pipeline compensating section and the flange edge of the corrugated pipe mounting position under the given temperature change amount and the stress distribution of the compensating corrugated pipe are obtained, and the step 5) comprises the following steps:
1) the input conditions used for finite element calculation and analysis are respectively axial displacement of flange surfaces on two sides of the compensation corrugated pipe and temperature change data as actual measurement results;
2) when the GIS pipeline compensation section expands with heat and contracts with cold, actual measured temperature data, such as the lowest temperature and the highest temperature of days or months, are taken as input conditions, the compensation corrugated pipe and the related GIS pipeline compensation section are taken, and finite element modeling is usually carried out from the compensation corrugated pipe to a fixed support section at a certain distance;
3) when the stress distribution of the compensating corrugated pipe is calculated, the actual measurement data of the axial displacement of the flange surfaces on the two sides of the compensating corrugated pipe are taken as input conditions, the displacement data of the highest temperature point and the lowest temperature point every day are selected, only finite element calculation analysis is carried out on the corrugated pipe, the stress distribution on the corrugated pipe is obtained, and the monitoring and evaluating method has the following advantages: the compensation corrugated pipe has the advantages that the displacement measurement mode of the compensation corrugated pipe is non-contact, the environmental adaptability and the weather resistance are good, and no additional acting force is generated on the structure; the stress deformation calculation of the GIS pipeline compensation section under the action of temperature difference comprehensively considers factors such as fixed support, internal pressure and the like, and the calculation result is accurate by taking measured data as input parameters; the compensation bellows fatigue damage is calculated based on the actual displacement variation of the bellows two-side flange in each fatigue load period as the finite element model input condition, and the calculation result is accurate, reliable and reliable; the operation state of the compensation corrugated pipe can be monitored and evaluated on line, the compensation corrugated pipe is convenient and efficient, potential risks are found and reported in time, and the problem that power supply safety is seriously threatened is solved.
When in use: 1) mounting targets on flanges on two sides of the compensation corrugated pipe, or marking measuring points or lines, or directly adopting flange contour lines;
2) fixing an image acquisition device (camera) on the foundation on the side surface of the compensation corrugated pipe, and shooting an image by adopting a fixed focal length;
3) a temperature sensor is arranged on the GIS pipeline cylinder;
4) the collected image data and the collected temperature data are transmitted to a PC (personal computer) end in a local area network in a wired or wireless mode and then transmitted to a cloud server in a wireless mode or directly transmitted to a cloud in a wireless mode;
5) identifying images acquired at different moments to obtain the pixel coordinate variation of the mark point in the axial direction of the GIS pipeline, and calculating the axial displacement variation of the compensation bellows flange according to the actual size corresponding to the pre-calibrated single pixel size;
6) finite element modeling is carried out on the compensation corrugated pipe, the GIS pipeline compensation section related to the compensation corrugated pipe and the fixed supporting structure; (whether the method is the existing method, if the method is the existing method, the supplementation is not needed, if not, the concrete modeling method needs to be supplemented by combining the information collected by the patent and the structure obtained by analysis)
7) Taking the temperature variation in a certain time period (generally 24 hours) as an input value, and taking other loads such as the internal pressure of a GIS pipeline cylinder body and the like (completion) into consideration to calculate (in the same way), so as to obtain axial displacement data of the flange on the side where the compensation corrugated pipe is connected with the compensation section;
8) taking the displacement variation of the flange surfaces at two sides of the compensating corrugated pipe within a certain period (generally 24 hours) as an input value, considering the internal pressure of a GIS pipeline cylinder, and calculating the stress distribution (same as above) of the compensating corrugated pipe under the action of the axial displacement load;
9) comparing the calculation result in 7) with the actual measurement result in 5), and judging whether the running state of the compensating corrugated pipe is normal (adding a specific judgment standard or method);
10) using the maximum stress value of the compensating corrugated pipe calculated in the step 8) for fatigue damage analysis (the same as the above), calculating a damage coefficient (smaller than 1) according to a linear damage accumulation mode, taking the damage coefficient reaching 1 as the service life end point of the corrugated pipe, taking the difference value between the damage coefficient and 1 as a damage allowance, and dividing the damage allowance by a damage rate to estimate the residual service life of the part;
11) and transmitting the monitoring evaluation result from the cloud server to an operation and maintenance manager information terminal according to the risk level.
In summary, the following steps: according to the GIS pipeline compensation corrugated pipe monitoring and evaluating method, the compensation corrugated pipe displacement measuring mode is non-contact, the environmental adaptability and the weather resistance are good, and no additional acting force is generated on the structure; the stress deformation calculation of the GIS pipeline compensation section under the action of temperature difference comprehensively considers factors such as fixed support, internal pressure and the like, and the calculation result is accurate by taking measured data as input parameters; the compensation bellows fatigue damage is calculated based on the actual displacement variation of the bellows two-side flange in each fatigue load period as the finite element model input condition, and the calculation result is accurate, reliable and reliable; the operation state of the compensation corrugated pipe can be monitored and evaluated on line, the compensation corrugated pipe is convenient and efficient, potential risks are found and reported in time, and the problem that power supply safety is seriously threatened is solved.
Claims (3)
1. A GIS pipeline compensation corrugated pipe monitoring and evaluating method is characterized by comprising the following steps:
1) monitoring the displacement of flanges on two sides of the corrugated pipe along the axial direction of the pipeline;
2) a temperature monitoring device is arranged on the GIS pipeline cylinder;
3) the temperature displacement monitoring devices can be configured with wireless transmission modules, image and temperature data are transmitted to a PC (personal computer) end in the local area network in a wired or wireless mode, and the processed data are transmitted to a cloud server in a wireless mode or are directly transmitted to a cloud for data processing;
4) obtaining axial displacement of flange surfaces on two sides of the corrugated pipe along with temperature change at a PC end or a cloud end in a local area network through image recognition;
5) based on axial displacement and temperature change data of flange surfaces on two sides of the compensating corrugated pipe, performing temperature difference stress deformation calculation on the GIS pipeline compensating section structure by adopting a finite element method to obtain axial displacement of the GIS pipeline compensating section and the flange edge of the corrugated pipe mounting part and stress distribution of the compensating corrugated pipe under given temperature change;
6) the data processing comprises the steps of comparing and analyzing the axial displacement calculation value of the flange surface of the installation position of the corrugated pipe and the GIS pipeline barrel compensation section obtained by adopting a finite element method with an actual measurement value, and evaluating whether the expansion with heat and the contraction with cold of the GIS pipeline are normally carried out or not;
7) the data processing also comprises fatigue life calculation of the stress distribution of the compensating corrugated pipe, and whether the residual service life of the compensating corrugated pipe meets the operation and maintenance requirements is evaluated;
8) and transmitting the evaluation result to an operation and maintenance manager information terminal according to the risk level.
2. The GIS pipeline compensation corrugated pipe monitoring and evaluation method according to claim 1, wherein the method comprises the following steps: the axial displacement monitoring of the flange surfaces on the two sides of the compensation corrugated pipe can be carried out in a mode based on image recognition, and the step 1) comprises the following steps:
1) installing a displacement monitoring device based on image recognition at the GIS pipeline compensation corrugated pipe;
2) wherein the image acquisition device is arranged on the foundation on the side surface of the corrugated pipe;
3) target targets are arranged on flange surfaces at two ends of the compensation corrugated pipe and used for assisting subsequent image recognition, if the flange outline can be directly recognized with high precision, the target targets can be eliminated.
3. The GIS pipeline compensation corrugated pipe monitoring and evaluation method according to claim 1, wherein the method comprises the following steps: based on the axial displacement and temperature change data of the flange surfaces on the two sides of the compensating corrugated pipe, performing temperature difference stress deformation calculation on the GIS pipeline compensating section structure by adopting a finite element method to obtain the axial displacement of the GIS pipeline compensating section and the flange edge of the corrugated pipe mounting position and the stress distribution of the compensating corrugated pipe under the given temperature change amount, wherein the step 5) comprises the following steps:
1) the input conditions used for finite element calculation and analysis are respectively axial displacement of flange surfaces on two sides of the compensation corrugated pipe and temperature change data as actual measurement results;
2) when the GIS pipeline compensation section expands with heat and contracts with cold, actual measured temperature data, such as the lowest temperature and the highest temperature of days or months, are taken as input conditions, the compensation corrugated pipe and the related GIS pipeline compensation section are taken, and finite element modeling is usually carried out from the compensation corrugated pipe to a fixed support section at a certain distance;
3) when the stress distribution of the compensating corrugated pipe is calculated, the actual axial displacement measurement data of the flange surfaces on the two sides of the compensating corrugated pipe are taken as input conditions, the displacement data of the highest temperature point and the lowest temperature point every day are selected, and only finite element calculation analysis is carried out on the corrugated pipe to obtain the stress distribution on the corrugated pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110693586.4A CN113420479A (en) | 2021-06-22 | 2021-06-22 | GIS pipeline compensation corrugated pipe monitoring and evaluating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110693586.4A CN113420479A (en) | 2021-06-22 | 2021-06-22 | GIS pipeline compensation corrugated pipe monitoring and evaluating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113420479A true CN113420479A (en) | 2021-09-21 |
Family
ID=77717425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110693586.4A Pending CN113420479A (en) | 2021-06-22 | 2021-06-22 | GIS pipeline compensation corrugated pipe monitoring and evaluating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113420479A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110124658A (en) * | 2010-05-11 | 2011-11-17 | 주식회사 디엠티 | Expansion joint device of hot pipe capable of monitoring |
| US20150052989A1 (en) * | 2013-08-20 | 2015-02-26 | Baker Hughes Incorporated | Metal Bellows Condition Monitoring System |
| KR20180033889A (en) * | 2016-09-26 | 2018-04-04 | 한국전력공사 | Method and system for evaluating life and risk degree of high temperature pipe |
| CN110781630A (en) * | 2019-11-28 | 2020-02-11 | 青海电研科技有限责任公司 | GIS equipment pipeline structure temperature difference stress deformation online monitoring method |
| CN111006591A (en) * | 2019-10-29 | 2020-04-14 | 国网浙江省电力有限公司电力科学研究院 | Method for non-contact measurement of displacement inversion stress of GIS (gas insulated switchgear) |
| CN212458245U (en) * | 2020-06-28 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | GIS equipment corrugated pipe compensator expansion amount monitoring device |
-
2021
- 2021-06-22 CN CN202110693586.4A patent/CN113420479A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110124658A (en) * | 2010-05-11 | 2011-11-17 | 주식회사 디엠티 | Expansion joint device of hot pipe capable of monitoring |
| US20150052989A1 (en) * | 2013-08-20 | 2015-02-26 | Baker Hughes Incorporated | Metal Bellows Condition Monitoring System |
| KR20180033889A (en) * | 2016-09-26 | 2018-04-04 | 한국전력공사 | Method and system for evaluating life and risk degree of high temperature pipe |
| CN111006591A (en) * | 2019-10-29 | 2020-04-14 | 国网浙江省电力有限公司电力科学研究院 | Method for non-contact measurement of displacement inversion stress of GIS (gas insulated switchgear) |
| CN110781630A (en) * | 2019-11-28 | 2020-02-11 | 青海电研科技有限责任公司 | GIS equipment pipeline structure temperature difference stress deformation online monitoring method |
| CN212458245U (en) * | 2020-06-28 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | GIS equipment corrugated pipe compensator expansion amount monitoring device |
Non-Patent Citations (3)
| Title |
|---|
| 罗宏建;陈兴涛;张杰;吴忠烨;赵洲峰;李正刚;: "GIS设备有限元结构分析研究", 浙江电力, no. 12 * |
| 陈兴涛: "基于有限元分析的大型变电站...S结构位移在线监测方法研究", 《中国优秀硕士学位论文全文库》, no. 2020, pages 52 - 59 * |
| 陈叔平;毛红威;姚淑婷;刘福录;任永平;: "高真空多层绝热低温管道内管路波纹管应力非线性有限元分析", 天然气工业, no. 04 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101123843B1 (en) | The equipment and method for estimating, controlling and forecasting the equilibrium state of temporary structure | |
| KR101135168B1 (en) | Method and system for inspecting creep and thinned damage in heat exchanger steam tube | |
| CN110596578A (en) | Non-contact measuring device for deformation of GIS (gas insulated switchgear) | |
| CN110108455B (en) | Method for measuring vibration stress and evaluating fatigue life of small pipeline of nuclear power plant | |
| CN114966467A (en) | Power transmission line state evaluation method based on digital twinning | |
| CN113983942B (en) | Fiber grating monitoring method and device for shield tunnel segment dislocation | |
| EP3690422A1 (en) | Method of assessing shaft alignment based on energy efficiency | |
| CN109631825A (en) | Heat supply pipeline displacement measurement and diagnostic system and its working method | |
| CN112539866B (en) | Bolt axial force monitoring system and monitoring method based on visual deep learning | |
| CN109099975A (en) | A kind of building structure health monitoring systems | |
| CN110909505A (en) | Transient temperature field calculation method of nuclear power plant fatigue monitoring and life evaluation system | |
| KR20200030317A (en) | Augmented Reality Platform for On-site inspection of electric power facilities using thermal imaging camera and IOT sensor | |
| CN113420479A (en) | GIS pipeline compensation corrugated pipe monitoring and evaluating method | |
| CN111006591B (en) | Method for non-contact measurement of displacement inversion stress of GIS (gas insulated switchgear) | |
| KR20110030523A (en) | Plant pipe life evaluation method based on operation history | |
| CN117057600A (en) | Online monitoring and analyzing method for concrete bridge structural cracks | |
| CN114739452B (en) | Transformer oil conservator fault monitoring method, device and storage medium | |
| CN111275936A (en) | Underwater oilfield facility safety protection monitoring system and method thereof | |
| JP2010191494A (en) | System and method for diagnosing remaining life of high temperature plant equipment | |
| KR102353866B1 (en) | Displacement and rotation measuring device for high temperature and strain measuring device for high temperature based on IoT and system for evaluating safety of piping using thereof | |
| CN112097725B (en) | Temperature compensation type expansion joint checking and adjusting method for outdoor GIS bus | |
| CN108647864A (en) | Old aerial earth wire degree of corrosion multidimensional acquisition and evaluating method | |
| CN210088474U (en) | Real-time state information acquisition and risk prediction system for steam pipeline of thermal power plant | |
| KR20150004119A (en) | Method of locating neutral axis for Detecting Damage of a Structure | |
| CN112540165A (en) | Water and soil loss early warning system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |