CN212749125U - Dull and stereotyped temperature rise test system of silicon rubber - Google Patents
Dull and stereotyped temperature rise test system of silicon rubber Download PDFInfo
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- CN212749125U CN212749125U CN202021174837.5U CN202021174837U CN212749125U CN 212749125 U CN212749125 U CN 212749125U CN 202021174837 U CN202021174837 U CN 202021174837U CN 212749125 U CN212749125 U CN 212749125U
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- flat plate
- silicon rubber
- resistance wire
- rubber flat
- temperature sensor
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- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 81
- 238000012360 testing method Methods 0.000 title claims abstract description 21
- 239000003365 glass fiber Substances 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 15
- 239000004945 silicone rubber Substances 0.000 claims description 43
- 239000003822 epoxy resin Substances 0.000 claims description 10
- 229920000647 polyepoxide Polymers 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical group [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 abstract description 30
- 239000012212 insulator Substances 0.000 abstract description 30
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 239000004593 Epoxy Substances 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000013307 optical fiber Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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Abstract
The utility model relates to a dull and stereotyped temperature rise test system of silicon rubber, including the resistance wire, direct current constant voltage power supply, a temperature sensor, data processing apparatus, dull and stereotyped and the epoxy glass fiber board of silicon rubber, the epoxy glass fiber board is located to the silicon rubber flat board, on the silicon rubber flat board is located to the resistance wire, the resistance wire both ends are connected with direct current constant voltage power supply's positive pole and negative pole respectively, a temperature sensor locates between dull and stereotyped and the epoxy glass fiber board of silicon rubber, a temperature sensor corresponds the setting with the resistance wire, a temperature sensor is connected with the data record appearance, data processing apparatus connects direct current constant voltage power supply and data record appearance respectively. The silicon rubber flat plate is subjected to a temperature rise test, so that the discharge detection of the composite insulator can be simulated, the heating condition of the surface of the composite insulator during discharge can be judged, and the heating of the surface of the composite insulator in different states can be simulated by controlling the current flowing through the resistance wire.
Description
Technical Field
The utility model relates to a composite insulator evaluation device field that discharges especially relates to a dull and stereotyped temperature rise test system of silicon rubber.
Background
Composite insulators are a large number of components used in power systems. The composite insulator has the advantages of strong pollution resistance, light weight, high strength, easy installation, no need of zero measurement and the like, so the composite insulator is widely applied to an electric power system. Under the conditions of ice coating, heavy pollution and the like, the discharge or flashover accidents of the composite insulator sometimes happen, and great threat is brought to the safe operation of a power grid. Therefore, the method has important significance for monitoring the discharge of the composite insulator, evaluating the surface heating condition of the composite insulator during discharge and guaranteeing the safe operation of a power grid.
At present, no composite insulator discharge detection device based on temperature is reported in the market.
SUMMERY OF THE UTILITY MODEL
To the technical problem who exists among the prior art, the utility model aims at: the silicone rubber flat plate temperature rise test system can simulate discharge detection of a composite insulator by performing a temperature rise test on a silicone rubber flat plate, and judges the heating condition of the surface of the composite insulator during discharge.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a dull and stereotyped temperature rise test system of silicon rubber, including the resistance wire, direct current constant voltage power supply, a temperature sensor, data processing apparatus, dull and stereotyped and epoxy glass fiber board of silicon rubber, the epoxy glass fiber board is located to the silicon rubber flat board, the resistance wire is located on the silicon rubber flat board, the resistance wire both ends are connected with direct current constant voltage power supply's positive pole and negative pole respectively, a temperature sensor locates between dull and stereotyped and the epoxy glass fiber board of silicon rubber, a temperature sensor corresponds the setting with the resistance wire, a temperature sensor is connected with the data record appearance, data processing apparatus connects direct current constant voltage power supply and data record appearance respectively.
And the upper end of the second temperature sensor is abutted to the lower end of the resistance wire, the lower end of the second temperature sensor is abutted to the upper surface of the silicon rubber flat plate, and the second temperature sensor is connected with the data recorder.
Furthermore, the number of the second temperature sensors is multiple, and the second temperature sensors are sequentially arranged at intervals along the extension direction of the resistance wire.
Furthermore, the number of the first temperature sensors is multiple, and the multiple first temperature sensors and the multiple second temperature sensors are correspondingly arranged.
Further, the output precision of the direct current stabilized power supply is 0.1%.
Further, the silicone rubber flat plate had a thickness of 4 mm.
Furthermore, the resistance wire is a tungsten wire.
Further, the data processing device is a computer.
In general, the utility model has the advantages as follows:
through carrying out the temperature rise test to the silicon rubber flat board, can simulate composite insulator and discharge and detect, obtain the dull and stereotyped lower surface temperature of silicon rubber through measuring, and then combine the Fourier law can try to get the dull and stereotyped upper surface temperature of silicon rubber, thereby the condition of generating heat on surface when can judging composite insulator discharges, can simulate generating heat under the different states in composite insulator surface through the electric current size that controls the resistance wire, can be applied to among the present optical fiber composite insulator, detect inside temperature through the fiber grating who places in the optical fiber composite insulator in, then judge the condition of generating heat on optical fiber composite insulator surface.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a side view of a silicone rubber flat sheet and an epoxy glass fiber sheet according to an embodiment of the present invention.
Fig. 3 is a graph showing temperature changes of the upper surface of the silicone rubber flat plate and the lower surface of the silicone rubber flat plate.
Description of reference numerals:
1-resistance wire, 2-DC stabilized voltage supply, 31-first temperature sensor, 32-second temperature sensor, 4-data recorder, 5-computer, 6-silicon rubber flat plate, 7-epoxy resin glass fiber plate.
Detailed Description
The present invention will be described in further detail below.
As shown in fig. 1-2, a silicone rubber flat plate temperature rise test system comprises a resistance wire 1, a dc regulated power supply 2, a first temperature sensor 31, a data processing device, a silicone rubber flat plate 6 and an epoxy resin glass fiber plate 7, wherein the silicone rubber flat plate 6 is arranged on the epoxy resin glass fiber plate 7, the resistance wire 1 is arranged on the silicone rubber flat plate 6, two ends of the resistance wire 1 are respectively connected with a positive electrode and a negative electrode of the dc regulated power supply 2, the first temperature sensor 31 is arranged between the silicone rubber flat plate 6 and the epoxy resin glass fiber plate 7, the first temperature sensor 31 is arranged corresponding to the resistance wire 1, the first temperature sensor 31 is connected with a data recorder 4, and the data processing device is respectively connected with the dc regulated power supply 2 and the data recorder 4.
Specifically, the lower surface of the silicone rubber flat plate 6 is closely attached to the upper surface of the epoxy resin glass fiber plate 7, and the upper surface of the silicone rubber flat plate 6 is in contact with air. The resistance wire 1 is arranged on the upper surface of the silicon rubber flat plate 6. The first temperature sensor 31 is arranged between the silicon rubber flat plate 6 and the epoxy resin glass fiber plate 7 and used for measuring the temperature of the lower surface of the silicon rubber flat plate 6 below the resistance wire 1.
During the test, the direct-current stabilized voltage power supply 2 is started, the resistance wire 1 starts to generate heat and rise the temperature, and the temperature rise process is shown in fig. 3. The arrows in fig. 2 indicate the downward transfer of heat from the resistance wire 1. The first temperature sensor 31 collects temperature data every 1s with a temperature accuracy of 0.2%. The data recorder 4 outputs the temperature data acquired by the first temperature sensor 31 to the data processing device.
The direct current stabilized voltage power supply 2 is provided with a data interface, and the resistance value of the resistance wire 1, the current flowing through the resistance wire 1 and the heating power of the resistance wire 1 are transmitted to a data processing device through the data interface. The data processing device controls the direct current stabilized power supply 2 to accurately output current.
According to the Fourier law, the steady-state temperature of the surface of the silicon rubber flat plate 6 is calculated as follows:
where Φ is a heat flux flowing through the silicone rubber plate 6, λ is a thermal conductivity of the silicone rubber plate 6, and θfIs the surface temperature, theta, of the silicone rubber flat plate 6inThe lower surface temperature of the silicone rubber flat plate 6, δ the thickness of the silicone rubber flat plate 6, and a the heat flow flowing area of the silicone rubber flat plate 6.
Wherein, the heat flow of the silicon rubber flat plate 6 is provided by the heating of the resistance wire 1. The heat flow actually flowing through the silicone rubber flat plate 6 is 12% of the total heat generation amount of the resistance wire 1, that is, Φ is 0.12 × i2And R is shown in the specification. Wherein i is the current flowing through the resistance wire 1, and R is the resistance of the resistance wire 1.
When the temperature of the resistance wire 1 reaches a steady state, recording the obtained thetainIn the drive-in type, the temperature theta of the upper surface of the silicon rubber flat plate 6 can be obtained by solving through a data processing devicef。
Therefore, the utility model discloses a dull and stereotyped temperature rise test system of silicon rubber, through carrying out the temperature rise test to silicon rubber flat plate 6, can simulate composite insulator and discharge and detect, obtain the dull and stereotyped 6 lower surface temperature of silicon rubber through measuring, and then combine the Fourier law to try to get the dull and stereotyped 6 upper surface temperature of silicon rubber, thereby can judge the condition of generating heat on surface when composite insulator discharges, can simulate the heating under the different states in composite insulator surface through the electric current size of control overcurrent resistance silk 1, can be applied to among the current optical fiber composite insulator, through placing the optical fiber grating detection internal temperature in the optical fiber composite insulator in, then judge the condition of generating heat on optical fiber composite insulator surface.
The upper end of the second temperature sensor 32 is abutted to the lower end of the resistance wire 1, the lower end of the second temperature sensor 32 is abutted to the upper surface of the silicon rubber flat plate 6, and the second temperature sensor 32 is connected with the data recorder 4.
The second temperature sensor 32 measures the temperature of the upper surface of the silicone rubber flat plate 6, so that the heating condition of the surface of the composite insulator can be simulated and measured when the composite insulator discharges. The calculation accuracy can be verified by comparing the temperature of the upper surface of the silicone rubber flat plate 6 measured by the second temperature sensor 32 with the temperature of the upper surface of the silicone rubber flat plate 6 calculated by combining the temperature of the lower surface of the silicone rubber flat plate 6 with the fourier law.
The number of the second temperature sensors 32 is multiple, and the multiple second temperature sensors 32 are sequentially arranged at intervals along the extending direction of the resistance wire 1.
By arranging the plurality of second temperature sensors 32, the heating temperatures of different positions of the resistance wire 1 can be measured, the average value of the heating temperatures is obtained, and more reliable measurement data can be obtained.
The number of the first temperature sensors 31 is plural, and the plural first temperature sensors 31 are provided corresponding to the plural second temperature sensors 32.
The accuracy of calculation can be verified at multiple points by measuring different positions of the lower surface of the silicone rubber flat plate 6 by the plurality of first temperature sensors 31 and comparing the temperatures of the different positions of the upper surface of the silicone rubber flat plate 6 measured by the plurality of second temperature sensors 32.
In this embodiment, the first temperature sensor 31 and the second temperature sensor 32 are both K-type thermocouples, the temperature measurement range is 0 ℃ to 1300 ℃, and 3 thermocouples are respectively arranged at corresponding positions on the upper surface of the silicone rubber flat plate 6 and the lower surface of the silicone rubber flat plate 6.
The tail ends of the K-type thermocouples are connected with the data recorder 4, wherein 3K-type thermocouples arranged on the upper surface of the silicon rubber flat plate 6 are respectively connected with the channel 1, the channel 3 and the channel 5 of the data recorder 4, and 3K-type thermocouples arranged on the lower surface of the silicon rubber flat plate 6 are respectively connected with the channel 2, the channel 4 and the channel 6 of the data recorder 4.
The output precision of the DC stabilized power supply 2 is 0.1%.
The high-precision direct-current stabilized power supply 2 can stably output constant current, and is favorable for obtaining an accurate measurement result.
The silicone rubber flat plate 6 has a thickness of 4 mm.
Generally, the thickness of the silicone rubber of the sheath of the composite insulator is 4mm, the inner part of the silicone rubber is tightly attached to the epoxy resin core rod, and the outer part of the silicone rubber is in contact with the atmosphere, so that in order to better simulate the working state of the composite insulator, in the embodiment, the silicone rubber flat plate 6 is the same as the silicone rubber of the sheath of the composite insulator, the silicone rubber flat plate 6 is a square with the side length of 10cm, and the thickness is 4 mm.
The resistance wire 1 is a tungsten wire. In this example, the purity of the tungsten filament was 99%.
The data processing device is a computer 5.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (8)
1. A dull and stereotyped temperature rise test system of silicon rubber which characterized in that: the resistance wire, direct current regulated power supply, a temperature sensor, a data processing device, a silicon rubber flat plate and an epoxy resin glass fiber board, the silicon rubber flat plate is arranged on the epoxy resin glass fiber board, the resistance wire is arranged on the silicon rubber flat plate, two ends of the resistance wire are respectively connected with the positive electrode and the negative electrode of the direct current regulated power supply, the temperature sensor is arranged between the silicon rubber flat plate and the epoxy resin glass fiber board, the temperature sensor corresponds to the resistance wire, the temperature sensor is connected with a data recorder, and the data processing device is respectively connected with the direct current regulated power supply and the data recorder.
2. The silicone rubber flat plate temperature rise test system according to claim 1, wherein: the upper end of the second temperature sensor is abutted to the lower end of the resistance wire, the lower end of the second temperature sensor is abutted to the upper surface of the silicon rubber flat plate, and the second temperature sensor is connected with the data recorder.
3. The silicone rubber flat plate temperature rise test system according to claim 2, wherein: the quantity of the second temperature sensors is multiple, and the second temperature sensors are sequentially arranged at intervals along the extension direction of the resistance wire.
4. The silicone rubber flat temperature rise test system according to claim 3, wherein: the first temperature sensor quantity is a plurality of, and a plurality of first temperature sensors correspond the setting with a plurality of second temperature sensor.
5. The silicone rubber flat plate temperature rise test system according to claim 1, wherein: the output precision of the direct current stabilized power supply is 0.1%.
6. The silicone rubber flat plate temperature rise test system according to claim 1, wherein: the thickness of the silicone rubber flat plate is 4 mm.
7. The silicone rubber flat plate temperature rise test system according to claim 1, wherein: the resistance wire is tungsten wire.
8. A silicone rubber flat plate temperature rise test system according to any one of claims 1 to 7, wherein: the data processing device is a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021174837.5U CN212749125U (en) | 2020-06-23 | 2020-06-23 | Dull and stereotyped temperature rise test system of silicon rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021174837.5U CN212749125U (en) | 2020-06-23 | 2020-06-23 | Dull and stereotyped temperature rise test system of silicon rubber |
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| Publication Number | Publication Date |
|---|---|
| CN212749125U true CN212749125U (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021174837.5U Expired - Fee Related CN212749125U (en) | 2020-06-23 | 2020-06-23 | Dull and stereotyped temperature rise test system of silicon rubber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113835006A (en) * | 2021-09-24 | 2021-12-24 | 南方电网科学研究院有限责任公司 | Method and device for testing step temperature rise test of thermosetting epoxy insulating part and application |
-
2020
- 2020-06-23 CN CN202021174837.5U patent/CN212749125U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113835006A (en) * | 2021-09-24 | 2021-12-24 | 南方电网科学研究院有限责任公司 | Method and device for testing step temperature rise test of thermosetting epoxy insulating part and application |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210319 |
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| CF01 | Termination of patent right due to non-payment of annual fee |