CN211528053U - Bending resistance test system for single-column leg of three-column insulator of GIL equipment - Google Patents
Bending resistance test system for single-column leg of three-column insulator of GIL equipment Download PDFInfo
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- CN211528053U CN211528053U CN201921878381.8U CN201921878381U CN211528053U CN 211528053 U CN211528053 U CN 211528053U CN 201921878381 U CN201921878381 U CN 201921878381U CN 211528053 U CN211528053 U CN 211528053U
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Abstract
The utility model discloses a bending resistance test system for single-post legs of three-post insulators of GIL equipment, which comprises a three-post insulator tool, a thrust test mechanism, a terminal mechanism and a protection circuit which are connected in sequence; the three-post insulator tool is used for fixing the three-post insulator to be tested; the thrust testing mechanism comprises a motor, a thrust sensor, a displacement sensor and a strain gauge; the terminal mechanism comprises a terminal machine and an oscilloscope; the terminal mechanism comprises a terminal machine and an oscilloscope. The embodiment of the utility model provides a three post insulator single-column leg bending resistance test system frames of GIL equipment are reasonable simple, and clearly directly perceived can accurately survey three post insulators and use the bending resistance of center post leg inserts at actual GIL, and convenient to use has greatly made things convenient for technical staff to performance information's collection and acquisition simultaneously.
Description
Technical Field
The utility model relates to a high-tension electricity test technical field especially relates to a three post insulator single-column leg bending resistance test system of GIL equipment.
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.
Under different complex working conditions, the three-post insulator can be influenced by different factors such as thermal expansion and cold contraction of the conductor/shell, ground settlement, assembly errors and the like, so that the structure and the electrical performance of the three-post insulator are changed, and the three-post insulator can damage power transmission equipment. In the three-post insulator, the post legs of the three-post insulator are easily subjected to a large bending moment load, the three-post insulator with insufficient bending resistance of a single post leg can form an internal air gap defect under complex stress conditions of transportation, installation, operation and the like, and finally insulation failure and insulator cracking accidents are caused along with the long-term operation and development of equipment, so that personnel and property losses to a certain degree are caused.
At present, aiming at the detection of the three-post insulator, only the mechanical properties of the three-post insulator such as conductor gravity bearing and mechanical load property caused by axial displacement are concerned, the problem of column leg bending resistance which is necessary to face in practical application of the three-post insulator is not hunted, and the stress condition of the three-post insulator under the actual working condition is very complex, so that the difficulty of stress simulation of the three-post insulator is higher; and a test system with a large difference from the actual situation cannot truly and effectively reflect the stress information and the stress information of the three-post insulator, so that accurate relevant information of the bending resistance of the three-post insulator leg insert cannot be obtained.
SUMMERY OF THE UTILITY MODEL
To the problem, an object of the utility model is to provide a can accurately reflect three post insulators three post insulator single-column leg bending resistance test system of bending resistance information of post leg inserts under operating condition.
In order to realize the above purpose, the utility model provides a three post insulator single-column leg bending resistance test system of GIL equipment, it is including the three post insulator frock, thrust accredited testing organization, terminal mechanism and the protection circuit who connects gradually.
The three-post insulator tool is used for fixing the three-post insulator to be tested.
The thrust testing mechanism comprises a motor, a thrust sensor, a displacement sensor and a strain gauge; the terminal mechanism comprises a terminal machine and an oscilloscope.
The motor is used for providing thrust load and keeping the thrust load; the thrust sensor is used for detecting the numerical value of the thrust load and sending the numerical value to the terminal machine; the displacement sensor is used for detecting the displacement of the force application point of the motor 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.
The terminal mechanism is used for calculating at least one of the following parameters according to the received data detected by the thrust testing mechanism: and the tensile strength, the yield strength and the bending moment load information of the to-be-tested column leg insert of the to-be-tested three-column insulator.
As the improvement of above-mentioned scheme, three post insulator frocks, thrust accredited testing organization and the terminal mechanism that connect gradually specifically include:
the direction of the to-be-tested column leg insert of the to-be-tested three-column insulator is perpendicular to the direction of the thrust load provided by the motor.
As an improvement of the scheme, the three-post insulator tool comprises a post leg fixing bolt.
As an improvement of the above scheme, the leg fixing bolt is arranged at an end of the to-be-tested leg insert of the to-be-tested three-post insulator and is fixedly connected with the to-be-tested leg insert of the to-be-tested three-post 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 bending resistance test system for the single-column leg of the three-column insulator of the GIL equipment, provided by the utility model, ensures the accuracy of the test by adopting the three-column insulator tool for fixing; the protection circuit is used for protecting the whole test system; the method comprises the steps that a thrust load is applied to a to-be-tested column leg of a tested three-column insulator by a motor, and the stress condition of equipment under the actual working condition is accurately simulated by adjusting the thrust load application form, such as linear rising until the thrust is damaged, linear rising of the thrust until a tolerance value is stopped or linear rising of the thrust to the tolerance value is maintained; the method comprises the steps that a plurality of test devices with specific functions are adopted to detect to-be-tested column leg inserts of the to-be-tested three-column insulator, so that thrust information, displacement information and stress information of the to-be-tested column leg inserts under different stress conditions are obtained, and further, according to the calculation of a terminal, the information of the tensile strength, the yield strength, the bending moment load and the like of the to-be-tested column leg inserts of the to-be-tested three-column insulator is obtained, and therefore the detection of the bending resistance of the single column leg of the three-column insulator; meanwhile, the terminal equipment is adopted to count the data collected by the plurality of test equipment, so that technical personnel can conveniently and visually and comprehensively know the bending resistance information of the three-post insulator. Each part mechanism of the whole test system is effectively matched, the frame is reasonable and simple, clear and visual, the bending resistance of the leg insert of the three-post insulator in actual GIL application can be accurately measured, and meanwhile, the three-post insulator testing system 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 required for the embodiments will be briefly described below, and obviously, 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 bending resistance testing system for a single-post leg of a three-post insulator of a GIL device according to an embodiment of the present invention;
fig. 2 is a schematic top view of a three-post insulator of a GIL device according to an embodiment of the present invention;
fig. 3 is a schematic view of a single-leg stress structure of a three-post insulator of a GIL device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to 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 present invention, the present 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 "disposed on," "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.
An embodiment of the utility model provides a three post insulator single-column leg bending resistance test system of GIL equipment, it is including the three post insulator frock, thrust accredited testing organization, terminal mechanism and the protection circuit who connects gradually. Specifically, please refer to fig. 1, which is a schematic structural diagram of a bending resistance testing system for a single-post leg 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 the three-post insulator to be tested. The thrust testing mechanism comprises a motor, a thrust sensor, a displacement sensor and a strain gauge. The terminal mechanism comprises a terminal machine and an oscilloscope. The protection circuit (not shown) is used for performing circuit protection on the whole test system.
Specifically, please refer to fig. 2, for the utility model provides a three post insulators of GIL equipment overlook the schematic structural diagram, as shown in the figure, three post insulators include insulator center inlay section of thick bamboo 2 and outside inserts, and center inlay section of thick bamboo 2 is located three post insulators's center, 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 thrust load and maintain the thrust load; in practical test, the post leg direction of the await measuring post leg inserts that awaits measuring of three post insulators should with the direction of thrust that the motor was applyed keeps perpendicular, please refer to fig. 3, does the embodiment of the utility model provides a single post leg atress structure sketch map of three post insulators of GIL equipment, wherein, the direction and the thrust F direction of post leg 3 keep perpendicular. While the other two legs 1 and 6 (not shown in fig. 3) of the three-post insulator under test are not fixed. The thrust load is applied to the to-be-tested column leg insert of the to-be-tested three-column insulator through the motor, the thrust load application form can be that the thrust linearly rises until the to-be-tested three-column insulator is damaged, the thrust linearly rises to a tolerance value and stops or the thrust linearly rises to the tolerance value to keep the load, and other damage experiments or tolerance experiments can be carried out according to requirements.
The thrust sensor is used for detecting the numerical value of the thrust load and sending the numerical value to the terminal machine; the displacement sensor is used for detecting the displacement of the force application point of the motor and sending the displacement to the terminal machine; the strain gauge 4 is arranged on the surface of the to-be-tested leg insert 3 of the to-be-tested three-post insulator, as shown in fig. 3, and is used for detecting strain information of the to-be-tested leg insert of the to-be-tested three-post insulator and sending the strain information to the oscilloscope for displaying.
The terminal mechanism is used for calculating at least one of the following parameters according to the received data detected by the thrust testing mechanism: and the tensile strength, the yield strength and the bending moment load information of the to-be-tested column leg insert of the to-be-tested three-column insulator. And calculating parameters reflecting strength performance, such as bending load bearing, compression load or torsion load bearing and the like, by receiving data detected by the thrust testing mechanism to obtain the information of the tensile strength, the yield strength and the bending moment load of the column leg insert to be tested, and further obtain the relevant information of the bending resistance performance of the single column leg of the three-column insulator. Specifically, the terminal may be any terminal device in the prior art, such as a notebook computer, a mobile phone, a tablet computer, and the like, and a plurality of terminals may be provided as required, and professional intensity information processing software is provided on the terminal to obtain the best test effect.
The bending resistance test system for the single-column leg of the three-column insulator of the GIL equipment, provided by the embodiment of the utility model, ensures the accuracy of the test by adopting the three-column insulator tool for fixing; the protection circuit is used for protecting the whole test system; the method comprises the steps that a thrust load is applied to a to-be-tested column leg of a tested three-column insulator by a motor, and the stress condition of equipment under the actual working condition is accurately simulated by adjusting the thrust load application form, such as linear rising until the thrust is damaged, linear rising of the thrust until a tolerance value is stopped or linear rising of the thrust to the tolerance value is maintained; the method comprises the steps that a plurality of test devices with specific functions are adopted to detect to-be-tested column leg inserts of the to-be-tested three-column insulator, so that thrust information, displacement information and stress information of the to-be-tested column leg inserts under different stress conditions are obtained, and further, according to the calculation of a terminal, the information of the tensile strength, the yield strength, the bending moment load and the like of the to-be-tested column leg inserts of the to-be-tested three-column insulator is obtained, and therefore the detection of the bending resistance of the single column leg of the three-column insulator; meanwhile, the terminal equipment is adopted to count the data collected by the plurality of test equipment, so that technical personnel can conveniently and visually and comprehensively know the bending resistance information of the three-post insulator. Each part mechanism of the whole test system is effectively matched, the frame is reasonable and simple, clear and visual, the bending resistance of the leg insert of the three-post insulator in actual GIL application can be accurately measured, and meanwhile, the three-post insulator testing system 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 tool, the thrust testing mechanism, and the terminal mechanism, which are connected in sequence, specifically include:
the direction of the to-be-tested column leg insert of the to-be-tested three-column insulator is perpendicular to the direction of the thrust load provided by the motor.
Preferably, in the above embodiment, referring to fig. 3, the three-post insulator tooling includes a leg fixing bolt 5.
Preferably, in the above embodiment, the leg fixing bolt 5 is disposed at an end of the to-be-tested leg insert 3 of the to-be-tested three-post insulator, and is used to ensure that the positions of the three-post insulator are relatively fixed and do not shake, the other two legs 1 and 6 (not shown in fig. 3) of the to-be-tested three-post insulator may be fixed according to actual requirements or not fixed, and after the bending resistance of a single leg is tested, the same bending resistance test may be performed on the other two subsequent legs.
Preferably, in the above embodiment, the strain gauge 4 is attached to a high stress area on the surface of the to-be-tested leg insert 3 of the to-be-tested three-post insulator. When the foil gage takes place deformation, measure or record deformation signal through multiple sensor the embodiment of the utility model provides an adopt oscilloscope to carry out detected signal to obtain the accurate waveform of signal.
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 also 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 bending resistance test system for the single-column leg of the three-column insulator of the GIL equipment, provided by the embodiment of the utility model, ensures the accuracy of the test by adopting the three-column insulator tool for fixing; the protection circuit is used for protecting the whole test system; the method comprises the steps that a thrust load is applied to a to-be-tested column leg of a tested three-column insulator by a motor, and the stress condition of equipment under the actual working condition is accurately simulated by adjusting the thrust load application form, such as linear rising until the thrust is damaged, linear rising of the thrust until a tolerance value is stopped or linear rising of the thrust to the tolerance value is maintained; the method comprises the steps that a plurality of test devices with specific functions are adopted to detect to-be-tested column leg inserts of the to-be-tested three-column insulator, so that thrust information, displacement information and stress information of the to-be-tested column leg inserts under different stress conditions are obtained, and further, according to the calculation of a terminal, the information of the tensile strength, the yield strength, the bending moment load and the like of the to-be-tested column leg inserts of the to-be-tested three-column insulator is obtained, and therefore the detection of the bending resistance of the single column leg of the three-column insulator; meanwhile, the terminal equipment is adopted to count the data collected by the plurality of test equipment, so that technical personnel can conveniently and visually and comprehensively know the bending resistance information of the three-post insulator. Each part mechanism of the whole test system is effectively matched, the frame is reasonable and simple, clear and visual, the bending resistance of the leg insert of the three-post insulator in actual GIL application can be accurately measured, and meanwhile, the three-post insulator testing system 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 details may be made therein without departing from the spirit and scope of the invention.
Claims (7)
1. A bending resistance test system for a single-column leg of a three-column insulator of GIL equipment is characterized by comprising a three-column insulator tool, a thrust test mechanism, a terminal mechanism and a protection circuit which are sequentially connected;
the three-post insulator tool is used for fixing the three-post insulator to be tested;
the thrust testing mechanism comprises a motor, a thrust sensor, a displacement sensor and a strain gauge; the terminal mechanism comprises a terminal machine and an oscilloscope;
the motor is used for providing thrust load and keeping the thrust load; the thrust sensor is used for detecting the numerical value of the thrust load and sending the numerical value to the terminal machine; the displacement sensor is used for detecting the displacement of the force application point of the motor 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;
the terminal mechanism is used for calculating at least one of the following parameters according to the received data detected by the thrust testing mechanism: and the tensile strength, the yield strength and the bending moment load information of the to-be-tested column leg insert of the to-be-tested three-column insulator.
2. The bending resistance testing system for the single-column leg of the three-column insulator of the GIL equipment as claimed in claim 1, wherein the three-column insulator tool, the thrust testing mechanism and the terminal mechanism which are sequentially connected specifically comprise:
the direction of the to-be-tested column leg insert of the to-be-tested three-column insulator is perpendicular to the direction of the thrust load provided by the motor.
3. The GIL apparatus three-post insulator single-post-leg bending resistance testing system according to claim 1, wherein said three-post insulator tooling comprises a post-leg fixing bolt.
4. The GIL device three-post insulator single-post-leg bending resistance testing system according to claim 3, wherein the post-leg fixing bolt is provided at an end portion of a post-leg insert to be tested of the three-post insulator to be tested and is fixedly connected with the post-leg insert to be tested of the three-post insulator to be tested.
5. The GIL device three post insulator single leg buckling strength testing system of claim 1, wherein said strain gage is applied to a high stress area of a surface of a post leg insert to be tested of said three post insulator under test.
6. The bending resistance testing system for the single-column leg of the three-column insulator of the GIL device according to claim 1, wherein the oscilloscope is connected to the terminal machine and is configured to send the strain information to the terminal machine.
7. The GIL apparatus three-post insulator single-post-leg bending resistance testing system according to claim 1, wherein said strain gauge is a 0.5 micro-strain high precision strain gauge.
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| CN201921878381.8U CN211528053U (en) | 2019-10-31 | 2019-10-31 | Bending resistance test system for single-column leg of three-column insulator of GIL equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113496795A (en) * | 2021-06-03 | 2021-10-12 | 南方电网科学研究院有限责任公司 | GIL post insulator and interface stress detection method thereof |
| CN113793738A (en) * | 2021-09-17 | 2021-12-14 | 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 | Surface treatment method for grounding insert of three-post insulator |
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2019
- 2019-10-31 CN CN201921878381.8U patent/CN211528053U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113496795A (en) * | 2021-06-03 | 2021-10-12 | 南方电网科学研究院有限责任公司 | GIL post insulator and interface stress detection method thereof |
| CN113793738A (en) * | 2021-09-17 | 2021-12-14 | 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 | Surface treatment method for grounding insert of three-post insulator |
| CN113793738B (en) * | 2021-09-17 | 2023-09-19 | 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 | Surface treatment method for three-post insulator grounding insert |
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