CN110793763A - GIL equipment three-post insulator leg insert bonding strength test system - Google Patents
GIL equipment three-post insulator leg insert bonding strength test system Download PDFInfo
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- CN110793763A CN110793763A CN201911063650.XA CN201911063650A CN110793763A CN 110793763 A CN110793763 A CN 110793763A CN 201911063650 A CN201911063650 A CN 201911063650A CN 110793763 A CN110793763 A CN 110793763A
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- post insulator
- tested
- leg insert
- bonding strength
- insulator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0033—Force sensors associated with force applying means applying a pulling force
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Abstract
The invention discloses a system for testing the bonding strength of a leg insert of a three-post insulator of GIL equipment, which comprises a three-post insulator tool, a tension detection mechanism and a terminal mechanism which are sequentially connected; the three-post insulator tool is used for fixing the three-post insulator to be tested; the tension detection mechanism comprises a motor, a tension sensor, a displacement sensor and a strain gauge; the terminal mechanism comprises a terminal machine and an oscilloscope. The system for testing the bonding strength of the three-post insulator leg insert of the GIL equipment provided by the embodiment of the invention has the advantages of reasonable, simple, clear and visual framework, capability of accurately testing the bonding strength performance of the three-post insulator leg insert in actual GIL application, convenience in use and great convenience for collection and acquisition of performance information by technical personnel.
Description
Technical Field
The invention relates to the technical field of high-voltage electric tests, in particular to a system for testing the bonding strength of a leg insert of a three-column insulator of a GIL device.
Background
Gas-insulated Metal-enclosed transmission line (GIL) is a transmission bus, which has a wide development prospect and is widely used in large nuclear power plants and hydropower stations. The GIL is constructed as a metal pipe filled with sulfur hexafluoride (SF6) gas under pressure as an insulating medium, with a centrally located conductor for electrical energy. In practical applications, the three-post insulator serves as a main insulator for supporting and insulating the central conductor. It can be seen that the three post insulator plays a very important role in the GIL field.
In the use process of the three-post insulator, due to the influence of different complex working conditions, the inside of the post leg insert can form a certain degree of air gap defect, and finally causes insulation failure and insulator cracking accidents along with the long-term running development of equipment, so that certain degree of personnel and property loss is caused. At present, the detection of the three-post insulator only focuses on the mechanical properties of the three-post insulator, such as conductor gravity bearing of the whole three-post insulator and mechanical load performance caused by axial displacement, and the problem of the bonding strength of the leg insert of the three-post insulator, which is necessary in practical application, is not involved.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a system for testing the bonding strength of a leg insert of a three-post insulator of a GIL device, which can accurately reflect the bonding strength information of the leg insert of the three-post insulator under actual conditions.
In order to achieve the purpose, the invention provides a system for testing the bonding strength of a leg insert of a three-post insulator of a GIL device, which comprises a three-post insulator tool, a tension detection mechanism and a terminal mechanism which are sequentially connected.
The three-post insulator tool is used for fixing the three-post insulator to be tested.
The tension detection mechanism comprises a motor, a tension sensor, a displacement sensor and a strain gauge.
The terminal mechanism comprises a terminal machine and an oscilloscope.
The motor is used for providing a tensile load and keeping the tensile load; the tension sensor is used for detecting the numerical value of the tension load and sending the numerical value to the terminal machine; the displacement sensor is used for detecting the displacement of the to-be-tested column leg insert of the to-be-tested three-column insulator and sending the displacement to the terminal machine; the strain gauge is arranged on the surface of the to-be-tested column leg insert of the to-be-tested three-column insulator, and is used for detecting strain information of the to-be-tested column leg insert of the to-be-tested three-column insulator and sending the strain information to the oscilloscope for displaying.
As an improvement of the scheme, the three-post insulator tool comprises a fixed pull ring and a fixed bolt.
As an improvement of the scheme, the fixed pull ring is arranged in a central embedded cylinder of the tested three-post insulator.
As an improvement of the scheme, the fixing bolt is arranged at the end part of the to-be-tested column leg insert of the to-be-tested three-column insulator and is fixedly connected with the to-be-tested column leg insert of the to-be-tested three-column insulator.
As an improvement of the scheme, the strain gauge is attached to a high-stress area of the surface of the to-be-tested column leg insert of the to-be-tested three-column insulator.
As an improvement of the above scheme, the oscilloscope is connected to the terminal machine and is configured to send the strain information to the terminal machine.
As an improvement of the scheme, the strain gauge is a high-precision strain gauge with 0.5 micro strain.
The adhesion strength testing system for the column leg insert of the three-column insulator of the GIL equipment, provided by the invention, has the advantages that the three-column insulator tool is adopted for fixing, the testing accuracy is ensured, meanwhile, the motor is utilized for applying a tensile load to the to-be-tested column leg of the tested three-column insulator, and the application form of the tensile load is adjusted, such as linear rising until the linear rising is destroyed, the tensile force linearly rises until a tolerance value is reached and stopped or the tensile force linearly rises to the tolerance value to keep the load, so that the stress condition of the equipment under the actual working condition is accurately simulated; detecting the to-be-tested column leg insert of the tested three-post insulator by adopting a plurality of testing devices with specific functions to obtain tension information, displacement information and stress information under different stress conditions, and further obtaining the bonding strength information of the three-post insulator column leg insert; meanwhile, data collected by the plurality of testing devices are counted by the terminal device, so that technical personnel can conveniently and visually and comprehensively know the leg insert information of the three-post insulator. Each part mechanism of the whole test system is effectively matched, the frame is reasonable, simple, clear and visual, the bonding strength performance of the three-post insulator leg insert in actual GIL application can be accurately measured, and meanwhile, the three-post insulator leg insert is convenient to use and brings great convenience to collection and acquisition of performance information by technical personnel.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments 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 it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a system for testing the bonding strength of a leg insert of a three-post insulator of a GIL device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a GIL device three-post insulator according to an embodiment of the present invention.
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.
In describing embodiments of the present invention, it should be noted that the invention may be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In addition, the invention is operational with numerous general purpose or special purpose computing device environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multi-processor apparatus, distributed computing environments that include any of the above devices or equipment, and the like.
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "end," and the like as used herein are for illustrative purposes only. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The embodiment of the invention provides a system for testing the bonding strength of a leg insert of a three-post insulator of GIL equipment. Specifically, please refer to fig. 1, which is a schematic structural diagram of a system for testing the bonding strength of a leg insert of a three-post insulator of a GIL device according to an embodiment of the present invention, wherein the three-post insulator tool is used for fixing a tested three-post insulator. The tension detection mechanism comprises a motor, a tension sensor, a displacement sensor and a strain gauge. The terminal mechanism comprises a terminal machine and an oscilloscope.
Specifically, referring to fig. 2, which is a schematic structural diagram of a three-post insulator of a GIL device according to an embodiment of the present invention, as shown in the figure, the three-post insulator includes a central insulator barrel 2 and an external insert, where the central insulator barrel 2 is located at the center of the three-post insulator and is made of a metal material. The external insert comprises three legs 1, 3 and 6 which are distributed with a phase difference of 120 degrees in a plane and embedded into the central embedded cylinder 2, and an optimized electric field at the leg is provided for the whole three-post insulator.
The three-post insulator tool is an auxiliary tool used in factory test detection of the three-post insulator. In this embodiment, the three-post insulator fixture is mainly used for fixing the three-post insulator to be tested, so that the whole testing system can effectively simulate the stress condition of the three-post insulator during testing.
It should be noted that, in this embodiment, the motor is used to provide a tensile load and maintain the tensile load; in practical tests, the leg direction of the to-be-tested leg insert of the tested three-post insulator is consistent with the direction of the pulling force applied by the motor, as shown in fig. 2, that is, the direction of the leg 3 is consistent with the direction of the pulling force F. And the other two column legs 1 and 6 of the tested three-column insulator are not fixed. The tensile load is applied to the to-be-tested column leg insert of the to-be-tested three-column insulator through the motor, the tensile load application form can be that the tensile force linearly rises until the to-be-tested three-column insulator is damaged, the tensile force linearly rises to a tolerance value and stops or the tensile force linearly rises to the tolerance value to keep the load, and other damage experiments or tolerance experiments can also be carried out according to requirements.
The tension sensor is used for detecting the numerical value of the tension load and sending the numerical value to the terminal machine; the displacement sensor is used for detecting the displacement of the to-be-tested column leg insert 3 of the to-be-tested three-column insulator and sending the displacement to the terminal machine; the strain gauge 5 is arranged on the surface of the to-be-tested column leg insert 3 of the to-be-tested three-column insulator, and is used for detecting strain information of the to-be-tested column leg insert of the to-be-tested three-column insulator and sending the strain information to the oscilloscope for displaying.
The terminal can be any terminal device in the prior art such as a notebook computer, a mobile phone and a tablet personal computer, and a plurality of terminals can be configured according to the requirement so as to obtain the best test effect.
The adhesion strength testing system for the column leg insert of the three-column insulator of the GIL equipment, provided by the embodiment of the invention, has the advantages that the three-column insulator tool is adopted for fixing, the testing accuracy is ensured, meanwhile, the motor is utilized for applying a tensile load to the to-be-tested column leg of the tested three-column insulator, and the application form of the tensile load is adjusted, such as linear rising until the tensile load is destroyed, linear rising of the tensile load until a tolerance value is reached and stopped or the tensile load is linearly raised until the tolerance value is reached to keep the load, so that the stress condition of the equipment under the actual working condition is; detecting the to-be-tested column leg insert of the tested three-post insulator by adopting a plurality of testing devices with specific functions to obtain tension information, displacement information and stress information under different stress conditions, and further obtaining the bonding strength information of the three-post insulator column leg insert; meanwhile, data collected by the plurality of testing devices are counted by the terminal device, so that technical personnel can conveniently and visually and comprehensively know the leg insert information of the three-post insulator. Each part mechanism of the whole test system is effectively matched, the frame is reasonable, simple, clear and visual, the performance of the three-post insulator leg insert in actual GIL application can be accurately measured, and meanwhile, the three-post insulator leg insert is convenient to use and brings great convenience to collection and acquisition of performance information by technical personnel.
Preferably, in the above embodiment, the three-post insulator tooling includes a fixing pull ring (not shown) and a fixing bolt 4.
Preferably, in the above embodiment, the fixing pull ring (not shown) is disposed on the central embedded cylinder 2 of the three-post insulator to be tested, so as to ensure that the positions of the three-post insulator are relatively fixed and no shaking occurs.
Preferably, in the above embodiment, the fixing bolt 4 is disposed at an end portion of the to-be-tested leg insert 3 of the to-be-tested three-post insulator, and is fixedly connected to the to-be-tested leg insert 3 of the to-be-tested three-post insulator, and after connection, a direction of the to-be-tested leg of the to-be-tested three-post insulator should be consistent with a motor tension applying direction. The other two column legs 1 and 6 of the three-column insulator to be tested can be fixed according to actual requirements or are not fixed.
Preferably, in the above embodiment, the strain gauge 5 is attached to the high stress area on the surface of the leg insert 3 to be tested of the tested three-post insulator. When the strain gauge deforms, deformation signals are measured or recorded through various sensors, and an oscilloscope is adopted to detect the signals in the embodiment of the invention so as to obtain accurate waveforms of the signals.
Preferably, in the above embodiment, the oscilloscope is connected to the terminal machine, and is configured to send the strain information to the terminal machine, and the terminal machine may be equipped with a corresponding database function, and analyze data detected by the entire test system, and record data information of the three-post insulators with different signal specifications, so as to facilitate comparison between the horizontal direction and the vertical direction by a technician. The waveform information of the oscilloscope is also sent to the terminal machine for analysis and storage, so that the comprehensive management of data is realized.
Preferably, in the above embodiment, the number of the strain gauges 5 may be set to a specific number according to actual test requirements, and the model specification of the strain gauges is preferably 0.5 micro-strain high-precision strain gauges. Strain is the ratio of the amount of deformation to the original dimension; the micro strain is used for representing the change degree of deformation and is only used for describing extremely tiny deformation, generally speaking, the micro strain is millionth of strain, and the high-precision strain gauge with 0.5 micro strain is adopted, so that the leg insert stress information of the three-pillar insulator can be detected more accurately, and the measurement accuracy is greatly improved.
The adhesion strength testing system for the column leg insert of the three-column insulator of the GIL equipment, provided by the embodiment of the invention, has the advantages that the three-column insulator tool is adopted for fixing, the testing accuracy is ensured, meanwhile, the motor is utilized for applying a tensile load to the to-be-tested column leg of the tested three-column insulator, and the application form of the tensile load is adjusted, such as linear rising until the tensile load is destroyed, linear rising of the tensile load until a tolerance value is reached and stopped or the tensile load is linearly raised until the tolerance value is reached to keep the load, so that the stress condition of the equipment under the actual working condition is; detecting the to-be-tested column leg insert of the tested three-post insulator by adopting a plurality of testing devices with specific functions to obtain tension information, displacement information and stress information under different stress conditions, and further obtaining the bonding strength information of the three-post insulator column leg insert; meanwhile, data collected by the plurality of testing devices are counted by the terminal device, so that technical personnel can conveniently and visually and comprehensively know the leg insert information of the three-post insulator. Each part mechanism of the whole test system is effectively matched, the frame is reasonable, simple, clear and visual, the bonding strength performance of the three-post insulator leg insert in actual GIL application can be accurately measured, and meanwhile, the three-post insulator leg insert is convenient to use and brings great convenience to collection and acquisition of performance information by technical personnel.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
Claims (7)
1. A GIL equipment three-post insulator leg insert bonding strength test system is characterized by comprising a three-post insulator tool, a tension detection mechanism and a terminal mechanism which are sequentially connected;
the three-post insulator tool is used for fixing the three-post insulator to be tested;
the tension detection mechanism comprises a motor, a tension sensor, a displacement sensor and a strain gauge;
the terminal mechanism comprises a terminal machine and an oscilloscope;
the motor is used for providing a tensile load and keeping the tensile load; the tension sensor is used for detecting the numerical value of the tension load and sending the numerical value to the terminal machine; the displacement sensor is used for detecting the displacement of the to-be-tested column leg insert of the to-be-tested three-column insulator and sending the displacement to the terminal machine; the strain gauge is arranged on the surface of the to-be-tested column leg insert of the to-be-tested three-column insulator, and is used for detecting strain information of the to-be-tested column leg insert of the to-be-tested three-column insulator and sending the strain information to the oscilloscope for displaying.
2. The GIL apparatus three post insulator leg insert bonding strength testing system of claim 1, wherein said three post insulator tooling comprises a fixing pull ring and a fixing bolt.
3. The GIL facility three post insulator leg insert bonding strength testing system of claim 2, wherein said fixing tab is provided to a central sleeve of said three post insulator under test.
4. The GIL device three-post insulator leg insert bonding strength testing system according to claim 2, wherein said fixing bolt is provided at an end portion of a to-be-tested leg insert of said to-be-tested three-post insulator and is fixedly connected to the to-be-tested leg insert of said to-be-tested three-post insulator.
5. The GIL device three post insulator leg insert bonding strength testing system of claim 1, wherein said strain gage is applied to a high stress area of a surface of a leg insert to be tested of said three post insulator under test.
6. The GIL device three-post insulator leg insert bonding strength test system according to claim 1, wherein said oscilloscope is connected to said terminal machine for sending said strain information to said terminal machine.
7. The GIL apparatus three post insulator leg insert bonding strength testing system of claim 1, wherein said strain gage is a 0.5 micro-strain high precision strain gage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911063650.XA CN110793763A (en) | 2019-10-31 | 2019-10-31 | GIL equipment three-post insulator leg insert bonding strength test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911063650.XA CN110793763A (en) | 2019-10-31 | 2019-10-31 | GIL equipment three-post insulator leg insert bonding strength test system |
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| CN110793763A true CN110793763A (en) | 2020-02-14 |
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| CN201911063650.XA Pending CN110793763A (en) | 2019-10-31 | 2019-10-31 | GIL equipment three-post insulator leg insert bonding strength test system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897479A (en) * | 2014-12-12 | 2015-09-09 | 国家电网公司 | Comprehensive detection system for mechanical properties of composite post insulator |
| CN106124151A (en) * | 2016-07-12 | 2016-11-16 | 南方电网科学研究院有限责任公司 | Extra-high voltage direct-current single-column composite post insulator shock test device and test method thereof |
| CN110006637A (en) * | 2019-03-18 | 2019-07-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Three support insulator Mechanical Reliability test platform of GIL equipment and test method |
-
2019
- 2019-10-31 CN CN201911063650.XA patent/CN110793763A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897479A (en) * | 2014-12-12 | 2015-09-09 | 国家电网公司 | Comprehensive detection system for mechanical properties of composite post insulator |
| CN106124151A (en) * | 2016-07-12 | 2016-11-16 | 南方电网科学研究院有限责任公司 | Extra-high voltage direct-current single-column composite post insulator shock test device and test method thereof |
| CN110006637A (en) * | 2019-03-18 | 2019-07-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Three support insulator Mechanical Reliability test platform of GIL equipment and test method |
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Application publication date: 20200214 |
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