CN211505706U - Measuring electrode for dielectric constant test of insulating paperboard - Google Patents
Measuring electrode for dielectric constant test of insulating paperboard Download PDFInfo
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- CN211505706U CN211505706U CN201922335883.2U CN201922335883U CN211505706U CN 211505706 U CN211505706 U CN 211505706U CN 201922335883 U CN201922335883 U CN 201922335883U CN 211505706 U CN211505706 U CN 211505706U
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Abstract
The utility model relates to an experimental measuring electrode that uses of insulating board dielectric constant belongs to power measurement equipment technical field. The technical scheme is as follows: the high-voltage electrode (8) is arranged above the insulating base (9), the measuring electrode (6) and the protective electrode (7) are arranged above the high-voltage electrode, and the weighting block (1) is arranged above the measuring electrode; the measuring electrode end (3), the protective electrode end (4) and the high-voltage electrode end (5) are correspondingly connected with the measuring electrode, the protective electrode and the high-voltage electrode respectively; the insulating base is a polytetrafluoroethylene material base, and the measuring electrode, the protective electrode and the high-voltage electrode are pure copper material electrodes. The electrode of the utility model is not connected with the base and other accessories by wires, and is not influenced by the ambient temperature when being measured in the environment of minus 60 ℃ to 100 ℃; can directly put into transformer oil and measure, the thickness of insulating paperboard is unanimous with calibrator measuring result during the measurement, has the characteristics that can dismantle, conveniently remove, store.
Description
Technical Field
The utility model relates to an experimental measuring electrode that uses of insulating board dielectric constant belongs to power measurement equipment technical field.
Background
At present, a dielectric constant measuring electrode for measuring the dielectric constant of an insulating paperboard is a universal electrode consisting of an inner electrode, a protective electrode and an outer electrode, is customized according to the content requirements of GB1049-2006, and can measure the dielectric constant of most solid insulating materials. However, different from other solid insulating materials, the electrode is made of an insulating paper board, when the electrode is measured, a measuring wire is added to an inner electrode, a shielding wire is added to a protective electrode, high voltage is applied to an outer electrode, so that capacitance between the inner electrode and the outer electrode is measured, the dielectric constant of the measured insulating paper is obtained according to the capacitance ratio, and the measured thickness changes along with the difference of the applied force of the measuring electrode; meanwhile, the electrode structure has wires and insulating materials, the use environment is 0-40 ℃, and the requirement on the measurement environment is high.
Disclosure of Invention
The utility model aims at providing a measuring electrode for dielectric constant test of insulating paper boards, which only consists of polytetrafluoroethylene and pure copper electrodes, and no wire connection exists between the electrode and a base and other accessories, so that the measuring electrode is measured in the environment of-60-100 ℃ and is not influenced by the ambient temperature; the transformer oil can be directly put into the transformer oil for measurement, the actual working state of the insulating paperboard is highly reduced, the thickness of the insulating paperboard is consistent with the measurement result of the thickness gauge during measurement, the measurement result has more practical significance, and the transformer oil thickness measuring device has the characteristics of being detachable, convenient to move and store, and effectively solves the problems existing in the background technology.
The technical scheme of the utility model is that: a measuring electrode for dielectric constant tests of insulating paperboards comprises a measuring electrode, a protective electrode, a high-voltage electrode, an insulating base, a weight applying block and a measuring wiring terminal, wherein the high-voltage electrode is arranged above the insulating base, the measuring electrode and the protective electrode are arranged above the high-voltage electrode, and the weight applying block is arranged above the measuring electrode; the measuring binding post comprises a measuring electrode tip, a protective electrode tip and a high-voltage electrode tip which are respectively and correspondingly connected with the measuring electrode, the protective electrode and the high-voltage electrode; the insulating base is a polytetrafluoroethylene material base, and the measuring electrode, the protective electrode and the high-voltage electrode are pure copper material electrodes.
And gaps between the protective electrode and the measuring electrode are uniformly arranged.
The measuring instrument further comprises a supporting rod and a supporting block, wherein the supporting rod is arranged below the weight applying block and inserted into the measuring electrode, and the supporting block is arranged between the weight applying block and the measuring electrode.
The device also comprises a dielectric loss bridge, wherein the measuring electrode end and the protective electrode end are respectively connected with the dielectric loss bridge through a measuring cable and a shielding cable, and the high-voltage electrode end is connected with the dielectric loss bridge through a high-voltage cable.
The utility model has the advantages that: the electrode is only composed of polytetrafluoroethylene and a pure copper electrode, and no wire connection exists between the electrode and the base and other accessories, so that the measurement is carried out in the environment of-60-100 ℃, and the influence of the environmental temperature is avoided; can directly put into transformer oil and measure, highly restore the operating condition of insulating cardboard reality, insulating cardboard thickness and calibrator measuring result are unanimous during the measurement for the measuring result has more actual meaning, has the characteristics that can dismantle, conveniently remove, store moreover.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention;
FIG. 2 is a longitudinal sectional construction view of the present invention;
in the figure: the device comprises a weight applying block 1, a support rod 2, a measuring electrode tip 3, a protective electrode tip 4, a high-voltage electrode tip 5, a measuring electrode 6, a protective electrode 7, a high-voltage electrode 8, an insulating base 9, a support block 10, a dielectric loss bridge 11, a measuring cable 12, a shielding cable 13, a high-voltage cable 14 and a tested object 15.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
A measuring electrode for dielectric constant tests of insulating paperboards comprises a measuring electrode 6, a protective electrode 7, a high-voltage electrode 8, an insulating base 9, a weight applying block 1 and a measuring wiring terminal, wherein the high-voltage electrode 8 is arranged above the insulating base 9, the measuring electrode 6 and the protective electrode 7 are arranged above the high-voltage electrode 8, and the weight applying block 1 is arranged above the measuring electrode 6; the measuring binding post comprises a measuring electrode tip 3, a protective electrode tip 4 and a high-voltage electrode tip 5 which are respectively and correspondingly connected with a measuring electrode 6, a protective electrode 7 and a high-voltage electrode 8; the insulating base 9 is a polytetrafluoroethylene base, and the measuring electrode 6, the protective electrode 7 and the high-voltage electrode 8 are pure copper electrodes.
The gaps between the protective electrode 7 and the measuring electrode 6 are uniformly arranged.
The measuring instrument further comprises a support rod 2 and a support block 10, wherein the support rod 2 is arranged below the weight applying body 1 and is inserted into the measuring electrode 6, and the support block 10 is arranged between the weight applying body 1 and the measuring electrode 6.
The device also comprises a dielectric loss bridge 11, the measuring electrode end 3 and the protective electrode end 4 are respectively connected with the dielectric loss bridge 11 through a measuring cable 12 and a shielding cable 13, and the high-voltage electrode end 5 is connected with the dielectric loss bridge 11 through a high-voltage cable 14.
In practical application, firstly, as shown in fig. 1, a sample 15 is placed on a high-voltage electrode 8, and a protective electrode 7 and a measuring electrode 6 are sequentially placed;
then, the gap between the protective electrode 7 and the measuring electrode 6 is uniformly controlled by using a distance measuring block;
placing the weighting block 1 on the measuring electrode 6 through the supporting block 10;
connecting the measuring electrode 6 and the shielding electrode 7 with a measuring clamp and a shielding clamp of the dielectric loss bridge through a measuring cable 12 and a shielding cable 13;
applying the high voltage cable 14 of the dielectric loss bridge 11 to the high voltage electrode 8;
the dielectric loss bridge 11 is activated and the measurement is started and the measured value is recorded.
The protection scope of the present invention shall be defined only by the following claims and their equivalents.
Claims (4)
1. A kind of insulating cardboard dielectric constant is experimental to use the measuring electrode, characterized by that: the device comprises a measuring electrode (6), a protective electrode (7), a high-voltage electrode (8), an insulating base (9), a weighting block (1) and a measuring wiring terminal, wherein the high-voltage electrode (8) is arranged above the insulating base (9), the measuring electrode (6) and the protective electrode (7) are arranged above the high-voltage electrode (8), and the weighting block (1) is arranged above the measuring electrode (6); the measuring binding post comprises a measuring electrode tip (3), a protective electrode tip (4) and a high-voltage electrode tip (5), which are respectively and correspondingly connected with a measuring electrode (6), a protective electrode (7) and a high-voltage electrode (8); the insulation base (9) is a polytetrafluoroethylene base, and the measuring electrode (6), the protective electrode (7) and the high-voltage electrode (8) are pure copper electrodes.
2. The electrode of claim 1, wherein the electrode comprises: and gaps between the protective electrode (7) and the measuring electrode (6) are uniformly arranged.
3. The electrode of claim 1, wherein the electrode comprises: the measuring instrument further comprises a supporting rod (2) and a supporting block (10), wherein the supporting rod (2) is arranged below the weight applying block (1) and inserted into the measuring electrode (6), and the supporting block (10) is arranged between the weight applying block (1) and the measuring electrode (6).
4. The electrode of claim 1, wherein the electrode comprises: the device is characterized by further comprising an dielectric loss bridge (11), wherein the measuring electrode end (3) and the protective electrode end (4) are respectively connected with the dielectric loss bridge (11) through a measuring cable (12) and a shielding cable (13), and the high-voltage electrode end (5) is connected with the dielectric loss bridge (11) through a high-voltage cable (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922335883.2U CN211505706U (en) | 2019-12-24 | 2019-12-24 | Measuring electrode for dielectric constant test of insulating paperboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922335883.2U CN211505706U (en) | 2019-12-24 | 2019-12-24 | Measuring electrode for dielectric constant test of insulating paperboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211505706U true CN211505706U (en) | 2020-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922335883.2U Active CN211505706U (en) | 2019-12-24 | 2019-12-24 | Measuring electrode for dielectric constant test of insulating paperboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211505706U (en) |
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2019
- 2019-12-24 CN CN201922335883.2U patent/CN211505706U/en active Active
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