CN111999186A - Temperature-controllable composite insulator mechanical performance test system - Google Patents
Temperature-controllable composite insulator mechanical performance test system Download PDFInfo
- Publication number
- CN111999186A CN111999186A CN202010680881.1A CN202010680881A CN111999186A CN 111999186 A CN111999186 A CN 111999186A CN 202010680881 A CN202010680881 A CN 202010680881A CN 111999186 A CN111999186 A CN 111999186A
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- 239000012212 insulator Substances 0.000 title claims abstract description 73
- 239000002131 composite material Substances 0.000 title claims abstract description 70
- 238000011056 performance test Methods 0.000 title description 2
- 238000010438 heat treatment Methods 0.000 claims abstract description 67
- 238000012360 testing method Methods 0.000 claims abstract description 39
- 238000009864 tensile test Methods 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 13
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 3
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
- 238000005253 cladding Methods 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001120 nichrome Inorganic materials 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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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
- G01N3/18—Performing tests at high or low temperatures
-
- 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
-
- 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
- G01N3/02—Details
-
- 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
-
- 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
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a temperature-controllable composite insulator mechanical performance testing system which comprises a tension testing machine and a heating device, wherein two clamping ends of the tension testing machine are respectively connected with a composite insulator to be tested through a connecting hardware fitting, the composite insulator is positioned in the heating device, and the heating device is used for heating the composite insulator to a preset temperature. The temperature-controllable composite insulator mechanical performance testing system provided by the invention can realize heating and temperature maintaining of the testing environment of the composite insulator test sample, so that the mechanical performance of the composite insulator can be tested at different temperatures, and the reliability of the mechanical performance strength of the composite insulator at high temperature can be verified.
Description
Technical Field
The invention relates to the technical field of insulator mechanical property detection, in particular to a temperature-controllable composite insulator mechanical property testing system.
Background
The composite insulator has the advantages of light weight, high mechanical strength, high hydrophobicity, high pollution flashover resistance, high economy and the like, and is widely applied to a power grid. The composite insulator is used as an insulating part for suspending a lead, and is often required to bear certain mechanical load in the use process, and the mechanical property of the composite insulator is particularly important. Under the condition of higher environmental temperature and line temperature, the end hardware temperature of the composite insulator also rises, and stress relaxation may occur at the crimping position due to different expansion coefficients of the end hardware material of the composite insulator and the core rod material, so that the mechanical performance of the composite insulator is affected. However, the existing insulator mechanical property testing machine is large in size, cannot be placed in a temperature testing box, and cannot test the mechanical properties of the composite insulator under different temperature conditions, so that the influence of temperature on the mechanical properties of the insulator cannot be researched.
Disclosure of Invention
In view of this, the present invention provides a temperature-controllable mechanical performance testing system for a composite insulator, and aims to solve the technical problem that the mechanical performance of the composite insulator under different temperature conditions cannot be tested in the prior art.
According to the invention, the temperature-controllable composite insulator mechanical performance testing system comprises a tension testing machine and a heating device, wherein two clamping ends of the tension testing machine are respectively connected with a composite insulator to be tested through a connecting hardware fitting, the composite insulator is positioned in the heating device, and the heating device is used for heating the composite insulator to a preset temperature.
Preferably, the heating device comprises a cylinder body with a cylindrical structure and a heating component arranged on the cylinder wall of the cylinder body.
Preferably, the barrel comprises two semi-cylinders which are opened and closed relatively, one side of each semi-cylinder is hinged, and the other side of each semi-cylinder is provided with a first connecting piece which can connect and enclose the two semi-cylinders to form a cylinder.
Preferably, the both ends of barrel are equipped with a set of thermal-insulated shrouding respectively, two sets of thermal-insulated shroudings block respectively in the both ends of barrel, every thermal-insulated shrouding of group comprises two semicircle ring heat shields that open and shut relatively respectively, two wherein one end that the semicircle ring heat shield is corresponding articulates respectively the tip of barrel, the other end is equipped with can be with two semicircle ring heat shield is connected to enclose and closes to form the annular second connecting piece of circle.
Preferably, heating device still includes the temperature control unit, the temperature control unit includes temperature sensor and temperature controller, temperature sensor locates on the inner wall of barrel, be used for detecting temperature in the barrel, temperature controller respectively with temperature sensor with the heating part electricity is connected, temperature controller is used for the basis temperature sensor detects temperature value in the barrel and the deviation control of predetermineeing the temperature value the heating part heats.
Preferably, the heating device further comprises a temperature display, and the temperature sensor is electrically connected with the temperature display.
Preferably, one end of the link fitting is matched with the clamping end of the tensile testing machine, and the other end of the link fitting is matched with one end of the composite insulator.
Preferably, the heating device further comprises a support frame arranged below the cylinder body, and the height of the support frame is adjustable.
Preferably, the heating part is a heating tape, and the heating tape is coated on the peripheral wall of the cylinder.
Preferably, the insulating material of heating band is the silicon rubber, the inside heating element of heating band is nichrome, the outside of heating band is equipped with the cotton insulating layer of heat preservation.
The temperature-controllable composite insulator mechanical performance testing system provided by the invention can realize heating and temperature maintaining of the testing environment of the composite insulator test sample, so that the mechanical performance of the composite insulator can be tested at different temperatures, and the reliability of the mechanical performance strength of the composite insulator at high temperature can be verified.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram illustrating a temperature-controllable composite insulator mechanical performance testing system according to an embodiment of the invention.
Fig. 2 is a schematic perspective view illustrating a heating device in a temperature-controllable composite insulator mechanical property testing system according to an embodiment of the present invention.
In the figure: the device comprises a tensile testing machine 1, a connecting hardware fitting 2, a composite insulator 3, a cylinder 4, a heating belt 5, a semicircular ring heat insulation sheet 6, a support frame 7, a temperature sensor 8 and a temperature controller 9.
Detailed Description
Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.
As shown in fig. 1, the invention provides a temperature-controllable composite insulator mechanical performance testing system, which comprises a tensile testing machine 1 and a heating device, wherein two clamping ends of the tensile testing machine 1 are respectively connected with a composite insulator 3 to be tested through a connecting fitting 2, the composite insulator 3 is positioned in the heating device, and the heating device is used for heating the composite insulator 3 to a preset temperature. The heating device is used for heating the composite insulator 3 to the preset temperature to be tested, so that the mechanical property of the composite insulator 3 at the preset temperature can be tested, and the reliability of the mechanical strength of the composite insulator 3 at high temperature can be verified.
The heating device comprises a cylinder 4 with a cylindrical structure and a heating component arranged on the wall of the cylinder 4. The barrel 4 comprises two semi-cylinders which are opened and closed relatively, one sides of the two semi-cylinders are hinged, and the other side of the two semi-cylinders is provided with a first connecting piece which can connect and enclose the two semi-cylinders to form a cylinder. As shown in fig. 2, in this embodiment, one side of the two half cylinders is connected together through two hinges, and the other side of the two half cylinders is provided with two first connecting members, the first connecting members are latches, the fixing portion of the latch is disposed on one of the half cylinders, the moving portion of the latch is disposed on the other half cylinder, and the two half cylinders are connected through the two first connecting members, so as to form a cylindrical shape. The barrel 4 is set into two semi-cylinders which are opened and closed relatively, the barrel 4 can be conveniently opened to place the composite insulator 3, and the composite insulator 3 is connected with the clamping end of the tensile testing machine 1 through the connecting hardware fitting 2.
In this embodiment, tensile testing machine 1 adopts horizontal tensile testing machine, and two exposed core of tensile testing machine 1 are the level setting, correspondingly, heating device's barrel 4 also is the level setting. The support frame 7 is arranged below the barrel body 4, the barrel body 4 is fixedly connected to the top of the support frame 7, the height of the support frame 7 is adjustable, and the composite insulator 3 can be located at the center of the barrel body 4 by adjusting the height of the support frame 7. During concrete implementation, can set up the landing leg of support frame 7 into retractable structure to realize the regulation of support frame 7 height, for example, the landing leg of support frame 7 can include fixed landing leg and insert the flexible landing leg of establishing in fixed landing leg, set up the screw hole that link up on the outer wall of fixed landing leg, spiro union a set screw in the screw hole adjusts flexible landing leg inserts behind the length of fixed landing leg, through screwing set screw, will flexible landing leg with fixed landing leg extrusion fixed connection is in the same place. The height adjusting structure of the supporting frame 7 is not limited to the above form, and any other structural form may be adopted as long as the height adjustment of the supporting frame 7 can be achieved.
Further, the both ends of barrel 4 are equipped with a set of thermal-insulated shrouding respectively, and two sets of thermal-insulated shroudings block in the both ends of barrel 4 respectively, and every thermal-insulated shrouding of group comprises two semicircle ring heat shields 6 that open and shut relatively respectively, and two corresponding wherein one end of semicircle ring heat shields 6 articulates respectively at the tip of barrel 4, and the other end is equipped with and can connects two semicircle ring heat shields 6 to enclose to close and form the annular second connecting piece of circle. Specifically, in this embodiment, a half cylinder fixed connection of barrel 4 is on support frame 7, and another half cylinder can open and shut the setting for fixing the half cylinder on support frame 7, and in every thermal-insulated shrouding of group, two corresponding one of them one end of semicircle ring heat insulating mattress 6 set up the pivot respectively, the pivot is rotated and is connected on fixing the half cylinder on support frame 7, and the corresponding other end of two semicircle ring heat insulating mattress 6 sets up the second connecting piece, and after two semicircle cylinders enclosed the synthetic cylindric back, the second connecting piece on two semicircle ring heat insulating mattress 6 is connected with the half cylinder that can open and shut the setting to make two semicircle ring heat insulating mattress 6 enclose and close the formation ring form, the second connecting piece can be the hasp, also can be the fixed connection spare of other structures. The circular hole at the center of the heat insulation close plate is used for the connecting hardware fitting 2 to pass through, the semicircular heat insulation sheet 6 can be made of heat insulation materials arranged on a semicircular steel plate, and the heat insulation materials can be heat insulation materials known in the prior art, such as asbestos plates and the like. The heat insulation close plates at the two ends of the cylinder 4 can keep the whole cylinder 4 in a closed heat insulation state.
In this embodiment, the heating member is a heating tape, and the heating tape 5 is coated on the outer circumferential wall of the cylinder 4. The insulating material of heating band 5 is silicon rubber, and the inside heating element of heating band 5 is nichrome, and the outside of heating band 5 is equipped with the cotton insulating layer of heat preservation. The cladding of zone heater 5 is in back on the periphery wall of barrel 4, through stainless steel spring hasp locking fastening fixed, specifically, the fixed part and the movable part of stainless steel spring hasp set up respectively on 5 relative both sides of zone heater, the cladding of zone heater 5 is in back on the barrel 4 is fixed zone heater 5 locking through stainless steel spring hasp on the periphery wall of barrel 4. The heating belt 5 is used for heating and insulating the cylinder 4.
Further, heating device still includes the temperature control unit, and the temperature control unit includes temperature sensor 8 and temperature controller 9, and temperature sensor 8 locates on the inner wall of barrel 4, be used for detecting temperature in the barrel 4, temperature controller 9 respectively with temperature sensor 8 with the heating part electricity is connected, and temperature controller 9 is used for detecting according to temperature sensor 8 temperature value in the barrel 4 and the deviation control heating tape 5 of predetermineeing the temperature value heat. As shown in fig. 2, in the present embodiment, the temperature sensor 8 is provided on the inner wall of the upper half cylinder. Further, heating device still includes temperature monitor, and temperature sensor 8 and temperature monitor electric connection, temperature monitor are used for showing the real-time temperature value in barrel 4.
In the temperature-controllable composite insulator mechanical performance testing system, two clamping ends of a tension testing machine 1 are connected with two ends of a composite insulator 3 through a connecting hardware fitting 2 respectively, one end of the connecting hardware fitting 2 is matched with the clamping ends of the tension testing machine 1, and the other end of the connecting hardware fitting is matched with one end of the composite insulator 3. In specific implementation, the connecting hardware fitting 2 with various structures can be arranged to adapt to the composite insulators with different end hardware fitting structures.
In this embodiment, the tensile testing machine 1 is controlled by a microcomputer, and can realize various loading modes and real-time display and record of tensile values. When testing 3 mechanical properties of composite insulator, open the semi-cylinder that can open and shut of barrel 4, and the thermal-insulated shrouding at 4 both ends of barrel will await measuring composite insulator 3 puts into inside the barrel 4, composite insulator 3's both ends are respectively through two connecting fitting 2 and tensile testing machine 1's two centre gripping end fixed connection, and composite insulator 3 is connected with tensile testing machine 1 and is accomplished the back, closes barrel 4 and the thermal-insulated shrouding at 4 both ends of barrel adjusts the height of support frame 7, makes composite insulator 3 be located the central point of barrel 4 and puts, fixes 5 claddings of heating tape on the periphery wall of barrel 4. After the preparation is ready, the temperature controller 9 is turned on to heat the switch, the corresponding temperature is set, and after the temperature in the cylinder 4 reaches the test requirement, a proper loading mode is selected on the microcomputer operation interface of the tensile testing machine 1 to test the mechanical performance of the composite insulator 3.
The temperature-controllable composite insulator mechanical performance testing system provided by the invention can realize heating and temperature maintaining of the testing environment of the composite insulator test sample, so that the mechanical performance of the composite insulator can be tested at different temperatures, and the reliability of the mechanical performance strength of the composite insulator at high temperature can be verified.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (10)
1. The utility model provides a controllable composite insulator mechanical properties test system of temperature which characterized in that, includes tensile testing machine and heating device, the composite insulator that awaits measuring is connected through link fitting respectively to two exposed core of tensile testing machine, composite insulator is located in the heating device, heating device be used for with composite insulator heats to predetermineeing the temperature.
2. The system for testing the mechanical property of the temperature-controllable composite insulator according to claim 1, wherein the heating device comprises a cylinder body with a cylindrical structure and a heating component arranged on the cylinder wall of the cylinder body.
3. The system for testing the mechanical property of the temperature-controllable composite insulator according to claim 2, wherein the barrel comprises two semi-barrels which are oppositely opened and closed, one side of each of the two semi-barrels is hinged, and the other side of each of the two semi-barrels is provided with a first connecting piece which can connect and enclose the two semi-barrels to form a cylindrical shape.
4. The system for testing the mechanical property of the temperature-controllable composite insulator according to claim 3, wherein a set of heat insulation sealing plates are respectively arranged at two ends of the barrel body, the two sets of heat insulation sealing plates are respectively sealed at two ends of the barrel body, each set of heat insulation sealing plate is respectively composed of two semi-circular heat insulation pieces which are oppositely opened and closed, one ends of the two semi-circular heat insulation pieces which correspond to each other are respectively hinged at the end part of the barrel body, and the other end of the semi-circular heat insulation pieces is provided with a second connecting piece which can connect and enclose the two semi-circular heat insulation pieces to.
5. The system for testing mechanical properties of the temperature-controllable composite insulator according to claim 2, wherein the heating device further comprises a temperature control unit, the temperature control unit comprises a temperature sensor and a temperature controller, the temperature sensor is arranged on the inner wall of the barrel body and used for detecting the temperature in the barrel body, the temperature controller is respectively electrically connected with the temperature sensor and the heating part, and the temperature controller is used for controlling the heating part to heat according to the deviation between the temperature value detected by the temperature sensor in the barrel body and a preset temperature value.
6. The temperature-controllable composite insulator mechanical property testing system according to claim 5, wherein the heating device further comprises a temperature display, and the temperature sensor is electrically connected with the temperature display.
7. The system for testing mechanical properties of the temperature-controllable composite insulator according to claim 1, wherein one end of the link fitting is fitted to the clamping end of the tensile testing machine, and the other end of the link fitting is fitted to one end of the composite insulator.
8. The temperature-controllable composite insulator mechanical property testing system according to claim 2, wherein the heating device further comprises a support frame arranged below the cylinder body, and the height of the support frame is adjustable.
9. The system for testing the mechanical property of the temperature-controllable composite insulator according to claim 2, wherein the heating component is a heating tape, and the heating tape is coated on the outer peripheral wall of the cylinder body.
10. The system for testing the mechanical property of the temperature-controllable composite insulator according to claim 9, wherein the insulating material of the heating belt is silicon rubber, the internal heating element of the heating belt is nickel-chromium alloy, and a heat insulation cotton layer is arranged outside the heating belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680881.1A CN111999186B (en) | 2020-07-15 | 2020-07-15 | Temperature-controllable composite insulator mechanical property test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680881.1A CN111999186B (en) | 2020-07-15 | 2020-07-15 | Temperature-controllable composite insulator mechanical property test system |
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| CN111999186A true CN111999186A (en) | 2020-11-27 |
| CN111999186B CN111999186B (en) | 2023-10-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504900A (en) * | 2020-12-02 | 2021-03-16 | 国网山东省电力公司电力科学研究院 | Device for simulating internal heating of composite insulator |
| CN114353864A (en) * | 2021-12-10 | 2022-04-15 | 深圳供电局有限公司 | Power transmission iron tower system, and design method and device of power transmission iron tower system |
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| CN114353864A (en) * | 2021-12-10 | 2022-04-15 | 深圳供电局有限公司 | Power transmission iron tower system, and design method and device of power transmission iron tower system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111999186B (en) | 2023-10-27 |
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