CN114184917A - Device and method for testing electrical characteristics of insulating paperboard - Google Patents
Device and method for testing electrical characteristics of insulating paperboard Download PDFInfo
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- CN114184917A CN114184917A CN202111514064.XA CN202111514064A CN114184917A CN 114184917 A CN114184917 A CN 114184917A CN 202111514064 A CN202111514064 A CN 202111514064A CN 114184917 A CN114184917 A CN 114184917A
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- 238000012360 testing method Methods 0.000 title claims abstract description 102
- 239000011087 paperboard Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 65
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 9
- 230000015556 catabolic process Effects 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 6
- 239000011810 insulating material Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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Abstract
The invention discloses an electrical characteristic testing device of an insulating paperboard, which consists of an electrical characteristic testing mechanism and an automatic sample changing device, wherein the automatic sample changing device comprises a transmission device (1), a control console (2), a transmission guide rod (3), a clamping device (4) and a sample support (5); the electrical characteristic testing mechanism comprises a high-voltage bushing (6), a sealing flange (7), a high-voltage electrode guide rod (8), a high-voltage electrode (9), a test cavity (10), a low-voltage electrode (12), a low-voltage electrode guide rod (13) and an insulating sheath (14). Before the electrical characteristic test, a plurality of groups of samples (11) to be tested are placed on the sample bracket (5). When the device is used for measuring, the control console (2) controls the transmission guide rod (3) to drive the clamping device (4) to move to clamp the sample (11) to be measured to a measuring position for measuring, and after the measurement is completed, the clamping device (4) is controlled to automatically replace the sample.
Description
Technical Field
The invention belongs to the field of electrical characteristic testing of insulating materials, and relates to a device and a method for testing electrical characteristics of an insulating paperboard.
Background
The electrical characteristics of the insulating material are important indexes for representing the insulating performance of the insulating material, the method has great reference significance for manufacturing, selecting and checking the insulating material, belongs to the technical field of insulating material electrical characteristic detection, and has obvious influence on measurement results by a measurement method and a measurement technology. Before the electrical characteristic measurement test is carried out on the insulating material, all samples to be tested need to be placed in a vacuum heating device, and blast heating degassing and vacuum oil immersion batch processing are carried out.
However, in the prior art, when a plurality of groups of samples are tested after pretreatment is finished, the cavity needs to be opened to replace the samples in each test, and the invasion of moisture inevitably occurs in the process, so that the state of the sample to be measured is changed, and the accuracy of the measurement result is affected.
Object of the Invention
The invention aims to solve the problem that the measurement result is inaccurate due to the fact that multiple times of sample changing are needed when the electrical characteristics of an insulating material are measured in the prior art, and provides a device capable of automatically changing samples when a plurality of groups of samples to be tested are subjected to an electrical characteristic test in a sealed environment. The automatic sample changing device is added on the basis of the traditional electrical characteristic test device, so that the influence of the external environment on the test result of the sample is reduced when a plurality of groups of tests are carried out.
Disclosure of Invention
According to one aspect of the invention, the invention provides an insulating paperboard electrical characteristic testing device which is composed of an electrical characteristic testing device and an automatic sample changing device, wherein the automatic sample changing device comprises a transmission device, a control console, a transmission guide rod, a clamping device and a sample bracket; the electrical characteristic testing device comprises a high-voltage sleeve, a sealing flange, a high-voltage electrode guide rod, a high-voltage electrode, a testing cavity, a low-voltage electrode guide rod and an insulating sheath;
the transmission device is arranged outside the test cavity and connected with the transmission guide rod in the test cavity to drive the transmission guide rod to lift and rotate;
the control console is connected with the transmission device and used for controlling the transmission device and supplying power to the transmission device;
the transmission guide rod is externally connected with the transmission device in the test cavity, and the clamping device is internally connected with the test cavity, so that the lifting and rotating actions of the clamping device are controlled under the driving of the transmission device;
the clamping device is driven by the transmission guide rod to realize lifting and rotating motion, and clamps and moves the sample to be tested;
the sample support is placed at the inner edge of the test cavity and used as a storage device for a sample to be tested, and the sample to be tested refers to an insulating paperboard to be tested which is not tested yet.
Preferably, the high-voltage bushing comprises an insulating umbrella skirt, an insulating sheath and an inner sealing ring and an outer sealing ring, and the high-voltage bushing is connected to the high-voltage electrode guide rod to realize the introduction of high voltage.
Preferably, the sealing flange comprises an inner sealing ring and an outer sealing ring, so that the air tightness of the measuring device is ensured; the high-voltage electrode guide rod is externally connected with the high-voltage sleeve, an upper electrode is connected in the electrical characteristic testing device, and the upper electrode introduces high voltage into the high-voltage electrode.
Preferably, the high-voltage electrode is a replaceable electrode, is connected to the high-voltage electrode guide rod through threads, and applies voltage stress to the sample to be tested when the high voltage acts on the high-voltage electrode guide rod; the test device is arranged in the test cavity, and when the electrical test is carried out, the interior of the test cavity is kept isolated from the external environment.
Preferably, the low voltage electrode is a replaceable electrode and is connected to the low voltage electrode guide rod through threads; the low-voltage electrode guide rod is fixed and sealed through the insulating sheath, the sealing performance of the test cavity is guaranteed, and the low-voltage electrode guide rod is connected with the outer side of the test cavity through a ground wire; the insulating sheath enables the low-voltage electrode guide rod to be insulated from the outside and guarantees the air tightness of the test cavity.
According to another aspect of the present invention, there is provided a method for measuring electrical characteristics using the above apparatus for testing electrical characteristics of insulating paper sheets, comprising the steps of:
step 1: placing a plurality of groups of samples to be tested on a sample support in the test cavity after pretreatment, and closing the test cavity;
step 2: the control console is operated to control a transmission device, the transmission device drives the transmission guide rod to lift and rotate, the clamping device is driven by the transmission guide rod to clamp a group of samples to be measured to a specified measuring position, and the samples are lifted, rotated or dropped as required to be electrically measured;
and step 3: after the test of a group of samples to be tested is finished, the control console is operated to control the transmission device, the transmission device drives the transmission guide rod to move up and down and rotate, the clamping device is driven by the transmission guide rod to move the tested samples to corresponding positions on the sample support to place the tested samples, and the other group of samples to be tested is replaced and clamped to perform measurement operation again.
Preferably, the electrical characteristic measurement comprises partial discharge detection or breakdown characteristic detection.
Drawings
Fig. 1 is a schematic structural view of an apparatus for testing electrical characteristics of an insulating paperboard according to the present invention.
Fig. 2 is a front view of the automatic insulating paperboard changing apparatus.
Fig. 3 is a bottom view of the automatic insulating paperboard sample changer.
Reference numerals: 1-a transmission device, 2-a console, 3-a transmission guide rod, 4-a clamping device, 5-a sample support, 6-a high-voltage sleeve, 7-a sealing flange, 8-a high-voltage electrode guide rod, 9-a high-voltage electrode, 10-a test chamber, 11-a sample, 12-a low-voltage electrode, 13-a low-voltage electrode guide rod and 14-an insulating sheath.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. It will be understood by those skilled in the art that this description is made only by way of example to illustrate preferred embodiments of the invention and should not be taken as limiting the scope of the invention.
The invention provides an electric characteristic testing device of an insulating paperboard, which consists of an electric characteristic testing device and an automatic sample changing device, and the structural schematic diagram of the electric characteristic testing device is shown in figure 1. Fig. 2 is a front view of the automatic changer, and fig. 3 is a bottom view of the automatic changer.
As shown in the figure, the automatic sample changing device comprises a transmission device (1), a control console (2), a transmission guide rod (3), a clamping device (4) and a sample support (5); the electrical characteristic testing device comprises a high-voltage bushing (6), a sealing flange (7), a high-voltage electrode guide rod (8), a high-voltage electrode (9), a test cavity (10), a sample to be tested (11), a low-voltage electrode (12), a low-voltage electrode guide rod (13) and an insulating sheath (14).
The transmission device (1) is arranged outside the test cavity (10) and is connected with the transmission guide rod (3) in the test cavity (10) to drive the transmission guide rod (3) to lift and rotate; the console (2) is connected with the transmission device (1) and is used for controlling the transmission device (1) and supplying power to the transmission device; the transmission guide rod (3) is externally connected with the transmission device (1) in the test cavity (10), and the clamping device (4) is internally connected in the test cavity (10), so that the lifting and rotating actions of the clamping device (4) are controlled under the driving of the transmission device (1); the clamping device (4) is driven by the transmission guide rod (3) to realize lifting and rotating motion, and clamps and moves the sample (11) to be tested; the sample support (5) is placed at the inner edge of the test cavity (10) and used as a storage device for a sample (11) to be tested, and the sample (11) to be tested refers to an insulating paperboard to be tested which is not tested yet.
The high-voltage bushing (6) comprises an insulating umbrella skirt, an insulating sheath and an inner sealing ring and an outer sealing ring, and the high-voltage bushing (6) is connected to the high-voltage electrode guide rod (8) to realize the introduction of high voltage. The sealing flange (7) comprises an inner sealing ring and an outer sealing ring, and the air tightness of the measuring device is guaranteed. The high-voltage electrode guide rod (8) is externally connected with a high-voltage sleeve (6), an upper electrode is connected in the electrical characteristic testing device, and the upper electrode introduces high voltage into the high-voltage electrode (9). The high-voltage electrode (9) is a replaceable electrode, is connected to the high-voltage electrode guide rod (8) through threads, and applies voltage stress to a sample (11) to be tested when high voltage acts on the high-voltage electrode guide rod. The test device is placed in the test cavity (10), and when the electrical test is carried out, the interior of the test cavity (10) is kept isolated from the external environment.
The low-voltage electrode (12) is a replaceable electrode and is connected to the low-voltage electrode guide rod (13) through threads. The low-voltage electrode guide rod (13) is fixed and sealed through an insulating sheath (14), the sealing performance of the test cavity (10) is guaranteed, and the low-voltage electrode guide rod (13) is connected with the outer side of the test cavity (10) through a ground wire. The insulating sheath (14) insulates the low-voltage electrode guide rod (13) from the outside and ensures the air tightness of the test cavity (10).
The method for testing the electrical characteristics of the insulating paperboard by using the electrical characteristic testing device, such as partial discharge detection or breakdown characteristic testing, specifically comprises the following steps:
step 1: before the electrical characteristic test is carried out, a plurality of groups of samples (11) to be tested are pretreated and then placed on the sample support (5) in the test cavity (10), and the test cavity (10) is closed;
step 2: the control console (2) is operated to control the transmission device (1), the transmission device (1) drives the transmission guide rod (3) to lift and rotate, the clamping device (4) is driven by the transmission guide rod (3) to clamp a group of samples (11) to be measured to lift, rotate or fall as required, and the samples are placed between the high-voltage electrode (9) and the low-voltage electrode (12) at a designated measuring position for electrical measurement;
and step 3: after the test of a group of samples (11) to be tested is completed, the control console (2) is operated to control the transmission device (1), the transmission device (1) drives the transmission guide rod (3) to move up and down and rotate, the clamping device (4) is driven by the transmission guide rod (3) to move the tested samples to corresponding positions on the sample support (5) to be placed, and the other group of samples (11) to be tested are replaced and clamped to perform measurement operation again.
In summary, before the electrical characteristic test such as partial discharge detection and breakdown characteristic detection is performed, a plurality of groups of samples to be tested are placed in the automatic sample changing device, the electrical characteristic measuring device is always kept in a sealed state in the test process, automatic change of detection of the plurality of groups of samples can be realized on the premise of keeping airtightness, and the problem that the measurement result is inaccurate due to invasion of outside air and moisture caused by frequent opening of the test cavity for manual change of the samples in multiple tests is avoided. And the electric characteristic testing device is provided with two sets of electrodes, namely a high-voltage electrode and a low-voltage electrode, so that two sets of samples can be simultaneously measured, and the automatic sample changing device can simultaneously change the two sets of samples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Compared with the prior art, the invention has the following advantages:
1. the automatic sample changing device is added on the basis of the traditional electrical characteristic test device, so that the influence of the external environment on the test result due to repeated sample changing during the multi-group test is avoided.
2. The step of manually replacing the test sample is cancelled when a plurality of groups of tests are carried out, and the contact frequency of experimenters and a high-voltage device is reduced.
3. The electric characteristic testing device is provided with two sets of electrodes, two sets of samples can be measured simultaneously, and the automatic sample changing device can be used for simultaneously changing the two sets of samples.
Claims (7)
1. An electric characteristic testing device of an insulating paperboard is composed of an electric characteristic testing mechanism and an automatic sample changing device, and is characterized in that the automatic sample changing device comprises a transmission device (1), a control console (2), a transmission guide rod (3), a clamping device (4) and a sample support (5); the electrical characteristic testing mechanism comprises a high-voltage bushing (6), a sealing flange (7), a high-voltage electrode guide rod (8), a high-voltage electrode (9), a test cavity (10), a low-voltage electrode (12), a low-voltage electrode guide rod (13) and an insulating sheath (14);
the transmission device (1) is arranged outside the test cavity (10) and connected with the transmission guide rod (3) in the test cavity (10) to drive the transmission guide rod (3) to lift and rotate;
the control console (2) is connected with the transmission device (1) and is used for controlling the transmission device (1) and supplying power to the transmission device;
the transmission guide rod (3) is externally connected with the transmission device (1) in the test cavity (10), and the clamping device (4) is internally connected in the test cavity (10), so that the lifting and rotating actions of the clamping device (4) are controlled under the driving of the transmission device (1);
the clamping device (4) is driven by the transmission guide rod (3) to realize lifting and rotating motion, and clamps and moves the sample (11) to be tested;
the sample support (5) is placed at the inner edge of the test cavity (10) and serves as a storage device for a sample (11) to be tested, and the sample (11) to be tested refers to an insulating paperboard to be tested which is not tested yet.
2. The insulation board electrical characteristic testing device according to claim 1, wherein the high voltage bushing (6) comprises an insulation shed, an insulation sheath and an inner and outer sealing ring, and the high voltage bushing (6) is connected to the high voltage electrode guide rod (8) to realize high voltage introduction.
3. The electrical characteristic testing device of the insulation board as claimed in claim 1, wherein the sealing flange (7) comprises inner and outer sealing rings to ensure the air tightness of the electrical characteristic testing device of the insulation board;
the high-voltage electrode guide rod (8) is externally connected with the high-voltage sleeve (6), an upper electrode is connected in the electrical characteristic testing device, and the upper electrode introduces high voltage into the high-voltage electrode (9).
4. The insulating paperboard electrical characteristic testing device according to claim 1, characterized in that the high voltage electrode (9) is a replaceable electrode, is connected to the high voltage electrode guide rod (8) through threads, and applies voltage stress to the test sample (11) to be tested when high voltage is applied;
the test device is placed in the test cavity (10), and when the electrical test is carried out, the interior of the test cavity (10) is kept isolated from the external environment.
5. The electrical property testing device of insulating paper board as claimed in claim 1, characterized in that the low voltage electrode (12) is a replaceable electrode, which is connected to the low voltage electrode guide rod (13) by screw thread; the low-voltage electrode guide rod (13) is fixed and sealed through the insulating sheath (14), the sealing performance of the test cavity (10) is guaranteed, and the low-voltage electrode guide rod (13) is connected with the outer side of the test cavity (10) through a ground wire;
the insulating sheath (14) insulates the low-voltage electrode guide rod (13) from the outside and ensures the airtightness of the test chamber (10).
6. A method for measuring electrical characteristics using the electrical characteristics testing apparatus for insulation boards according to any one of claims 1 to 5, comprising the steps of:
step 1: before the electrical characteristic test is carried out, a plurality of groups of samples (11) to be tested are pretreated and then placed on the sample support (5) in the test cavity (10), and the test cavity (10) is closed;
step 2: the control console (2) is operated to control the transmission device (1), the transmission device (1) drives the transmission guide rod (3) to lift and rotate, the clamping device (4) is driven by the transmission guide rod (3) to clamp a group of samples (11) to be measured to lift, rotate or fall as required, and the samples are placed between the high-voltage electrode (9) and the low-voltage electrode (12) at a designated measuring position for electrical measurement;
and step 3: after the test of a group of samples (11) to be tested is completed, the control console (2) is operated to control the transmission device (1), the transmission device (1) drives the transmission guide rod (3) to move up and down and rotate, the clamping device (4) is driven by the transmission guide rod (3) to move the tested samples to corresponding positions on the sample support (5) to be placed, and the other group of samples (11) to be tested are replaced and clamped to perform measurement operation again.
7. The method of making an electrical characteristic measurement of claim 6, wherein the electrical characteristic measurement comprises partial discharge detection or breakdown characteristic detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111514064.XA CN114184917A (en) | 2021-12-10 | 2021-12-10 | Device and method for testing electrical characteristics of insulating paperboard |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111514064.XA CN114184917A (en) | 2021-12-10 | 2021-12-10 | Device and method for testing electrical characteristics of insulating paperboard |
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| CN114184917A true CN114184917A (en) | 2022-03-15 |
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| CN202111514064.XA Pending CN114184917A (en) | 2021-12-10 | 2021-12-10 | Device and method for testing electrical characteristics of insulating paperboard |
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2021
- 2021-12-10 CN CN202111514064.XA patent/CN114184917A/en active Pending
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