CN104820171B - A kind of paper oil insulation partial discharge test lubricating cup - Google Patents
A kind of paper oil insulation partial discharge test lubricating cup Download PDFInfo
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- CN104820171B CN104820171B CN201510179618.3A CN201510179618A CN104820171B CN 104820171 B CN104820171 B CN 104820171B CN 201510179618 A CN201510179618 A CN 201510179618A CN 104820171 B CN104820171 B CN 104820171B
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- guide rod
- metal guide
- organic glass
- lucite tube
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Abstract
A kind of paper oil insulation partial discharge test lubricating cup, it is characterized in that：Including a lucite tube, lucite tube inner wall smooth, lucite tube upper orifice is equipped with organic glass upper cover, lower nozzle is equipped with aluminum lower cover, is provided with through hole among organic glass upper cover, the first metal guide rod is installed with through hole；Counterbore is provided with aluminum among hd top face, counterbore is fixed with the second metal guide rod of a setting, and the upper end of the second metal guide rod is inserted into the counterbore of a brass material circular plate type electrode bottom surface；An annular organic glass pressing plate is equipped between first metal guide rod and brass material circular plate type electrode, organic glass pressing plate and lucite tube are clearance fit moving up and down, the internal diameter of organic glass pressing plate is less than the diameter of circular plate type electrode, first metal guide rod upper end is connected with high voltage power supply, and the aluminum lower cover is connected with ground wire.It is convenient for changing high-field electrode, adjustment the distance between high-field electrode and grounding electrode；Insulating paper is driven plain fixed at the desired position without floating.
Description
Technical field
The present invention relates to a kind of paper oil insulation partial discharge test lubricating cup.
Background technology
Paper oil insulation is widely used in electric system, and oil-immersed transformer insulation system is mainly by fluid insulation
Formed with solid insulation two parts, solid insulation is used with paper oil insulation.Important set of the transformer oilpaper as insulation system
Into part, during operation, influenced for a long time be subject to multi-stress agings such as temperature, electric field, oxygen, moisture and metal impurities,
Decreasing insulating, directly threatens the safe operation of transformer.Especially because the defects of inside paper oil insulation, triggers part
Electric discharge, causes insulation breakdown and causes the accident of equipment power-off fault to happen occasionally, and the interruption of supply of electric power causes huge
Big economic loss.
At present on the existing many research of paper oil insulation shelf depreciation.It is irrecoverable after being punctured due to paper oil insulation
Property, ordinary test carries out on the small defect model device in oily cylinder.Often there is height for oily cylinder in prior-art devices
Pressure side pin electrode is not easy to replace, the distance between high-pressure side pin electrode and grounded metal ground electrode inconvenience adjustment, individual insulating paper
The problems such as can not flattening.
In addition, the bubble that the compressing method of the prior art makes to produce between insulating paper and metal polar plate can not depart from insulation
Paper, forms air gap between insulating paper and metal polar plate, influences result of the test.
The content of the invention
The technical problems to be solved by the invention, are just to provide a kind of paper oil insulation partial discharge test lubricating cup, Neng Goufang
Just the replacement of high-pressure side pin electrode and the adjustment of distance between high-pressure side pin electrode and grounded metal ground electrode are realized；At the same time
Can guarantee that under the conditions of various discharge tests, insulating paper can all be driven plain it is fixed will not float at the desired position, will not be
Air gap is formed between insulating paper and metal electrode.
Above-mentioned technical problem is solved, the present invention uses following technical solution：
A kind of paper oil insulation partial discharge test lubricating cup, it is characterized in that：Including a lucite tube 1, the organic glass
Inside pipe wall is smooth, and the lucite tube upper orifice is equipped with organic glass upper cover 3, lower nozzle is equipped with aluminum lower cover 4, and described has
Through hole is provided among machine glass top cover 3, the first metal guide rod 7 is installed with through hole；Counterbore is provided among hd top face under the aluminum,
Counterbore is fixed with the second metal guide rod 8 of a setting, and a brass material circular plate type electrode 5 is inserted into the upper end of the second metal guide rod 8
In the counterbore of bottom surface；An annular organic glass pressure is equipped between first metal guide rod and brass material circular plate type electrode 5
Plate 2, the organic glass pressing plate and lucite tube are clearance fit moving up and down, the internal diameter of the organic glass pressing plate
Less than the diameter of circular plate type electrode, the first metal guide rod upper end is connected with high voltage power supply, the aluminum lower cover and ground wire
Connection.
The embodiment recommended as the present invention, the upper cover through hole is threaded hole, and first metal guide rod is
Threaded guide rod, so can conveniently fix the first metal guide rod, while also can freely be adjusted by rotating the first metal guide rod
The height of high-field electrode.
Connection mode is described to be threadedly coupled between second metal guide rod and circular plate type electrode bottom surface, aluminum lower cover
Second metal guide rod both ends are equipped with external screw thread, and the counterbore of hd top face is equipped with interior spiral shell under the circular plate type electrode bottom surface, aluminum
Line, the second metal guide rod can be both fixed using the mode of threaded connection, while is also convenient for dismounting.
The lucite tube upper end is equipped with outer stepped groove, and the organic glass upper cover bottom surface is equipped with corresponding
Stepped groove.
The lucite tube lower end is equipped with external screw thread, and hd top face is equipped with corresponding internal thread under the aluminum,
Can be with easy disassembly and fixation using thread connecting mode between machine glass tube and aluminum lower cover.
The application method of the present invention：The second metal guide rod of grounding electrode lower end 8 is first assemblied in the counterbore 41 of aluminum lower cover 4
In, upper end connect brass material circular plate type electrode 5, then aluminum lower cover 4 is assembled on lucite tube 1.Then will be exhausted
Edge paper 6 is placed between organic glass pressing plate 2 and the circular plate type electrode 5 of brass material, organic glass pressing plate 2 is compressed insulating paper 6.
High voltage needle electrode needed for testing is assemblied in 7 lower end of the first metal guide rod, and the first metal guide rod 7 is assemblied in organic glass
In the threaded hole 31 of upper cover 3.Insulating oil is injected in lucite tube 1, and organic glass upper cover 3 is covered in lucite tube 1
On, be put into vacuum tank after vacuumizing and standing 24h, by the first metal guide rod 7 and aluminum lower cover 4 connect respectively high voltage power supply and
Ground wire, proceeds by partial discharge test.
Compared with prior art, inventive article has the following advantages：
1st, it is convenient for changing high-field electrode；
2nd, convenient adjustment the distance between high-field electrode and grounding electrode
3rd, insulating paper is driven plain fixed at the desired position without floating, therefore will not between insulating paper and metal electrode
Form air gap.
Brief description of the drawings
Fig. 1 is the schematic diagram of the present invention；
Fig. 2 is the lucite tube schematic diagram of the present invention；
Fig. 3 is the organic glass upper cover schematic diagram of the present invention；
Fig. 4 is the aluminum lower cover schematic diagram of the present invention；
Fig. 5 is the organic glass pressing plate schematic diagram of the present invention；
Shelf depreciation PRPD spectrograms when Fig. 6 is present invention application；
Partial discharge pulse's time-domain diagram when Fig. 7 is present invention application.
In figure：1- lucite tubes, 2- pressing plates, 3- upper covers, 4- lower covers, 5- circular plate type electrodes, 6- insulating papers, the first gold medals of 7-
Belong to guide rod, the second metal guide rods of 8-, 31- through holes, 41- counterbores.
Embodiment
With embodiment, the invention will be further described below in conjunction with the accompanying drawings.
As shown in Fig. 1~5, a kind of paper oil insulation partial discharge test lubricating cup, it is characterized in that：Including a lucite tube 1,
The lucite tube inner wall smooth, the lucite tube upper orifice is equipped with organic glass upper cover 3, lower nozzle is equipped with aluminum
Lid 4, is provided with through hole 31 among the organic glass upper cover 3, the first metal guide rod 7 is installed with through hole；Caping under the aluminum
Counterbore 41 is provided among face, counterbore is fixed with the second metal guide rod 8 of a setting, and the upper end insertion one of the second metal guide rod 8 is yellow
In the counterbore of 5 bottom surface of copper material circular plate type electrode；It is equipped between first metal guide rod and brass material circular plate type electrode 5
One annular organic glass pressing plate 2, the organic glass pressing plate and lucite tube are clearance fit moving up and down, described to have
The internal diameter of machine flat is less than the diameter of circular plate type electrode, and the first metal guide rod upper end is connected with high voltage power supply, described
Aluminum lower cover be connected with ground wire.
In the present embodiment, the upper cover through hole is threaded hole, and first metal guide rod is threaded guide rod, so may be used
The first metal guide rod is fixed to facilitate, while also can freely adjust the height of high-field electrode by rotating the first metal guide rod.
Connection mode is described to be threadedly coupled between second metal guide rod and circular plate type electrode bottom surface, aluminum lower cover
Second metal guide rod both ends are equipped with external screw thread, and the counterbore of hd top face is equipped with interior spiral shell under the circular plate type electrode bottom surface, aluminum
Line, the second metal guide rod can be both fixed using the mode of threaded connection, while is also convenient for dismounting.
The lucite tube upper end is equipped with outer stepped groove, and the organic glass upper cover bottom surface is equipped with corresponding
Stepped groove.
The lucite tube lower end is equipped with external screw thread, and hd top face is equipped with corresponding internal thread under the aluminum,
Can be with easy disassembly and fixation using thread connecting mode between machine glass tube and aluminum lower cover.
The application method of the present invention：The second metal guide rod of grounding electrode lower end 8 is first assemblied in the counterbore 41 of aluminum lower cover 4
In, upper end connect brass material circular plate type electrode 5, then aluminum lower cover 4 is assembled on lucite tube 1.Then will be exhausted
Edge paper 6 is placed between organic glass pressing plate 2 and the circular plate type electrode 5 of brass material, organic glass pressing plate 2 is compressed insulating paper 6.
High voltage needle electrode needed for testing is assemblied in 7 lower end of the first metal guide rod, and the first metal guide rod 7 is assemblied in organic glass
In the threaded hole 31 of upper cover 3.Insulating oil is injected in lucite tube 1, and organic glass upper cover 3 is covered in lucite tube 1
On, be put into vacuum tank after vacuumizing and standing 24h, by the first metal guide rod 7 and aluminum lower cover 4 connect respectively high voltage power supply and
Ground wire, proceeds by partial discharge test.
Result of the test as shown in Figure 6,7 shows that the shelf depreciation PRPD spectrograms carried out in the present invention meet office in oil
Portion, which discharges, occurs mainly in the feature of voltage rising edge.Meanwhile by carrying out fast Fourier change to local discharge pulse signal
Frequency-domain analysis after changing the result shows that, its discharge energy is concentrated mainly between 10MHz-30MHz, while is also had at 40MHz
Certain distribution.Time domain beamformer shows that partial discharge pulse's form is predominantly superimposed with many high frequencies in an Exponential Decay Wave
Spiking, this is also identical with the canonical form of shelf depreciation in oil.In conclusion the present invention can be proved by experimental result
Fully meet the requirement tested at present.
Claims (5)
1. a kind of paper oil insulation partial discharge test lubricating cup, it is characterized in that：Including a lucite tube, in the lucite tube
Wall is smooth, and the lucite tube upper orifice is equipped with organic glass upper cover, lower nozzle is equipped with aluminum lower cover, the organic glass
Through hole is provided among upper cover, the first metal guide rod is installed with through hole；
Counterbore is provided with the aluminum among hd top face, counterbore is fixed with the second metal guide rod of a setting, the second metal guide rod
Upper end be inserted into a brass material circular plate type electrode bottom surface counterbore in；
An annular organic glass pressing plate is equipped between first metal guide rod and brass material circular plate type electrode, it is described organic
Flat is clearance fit moving up and down with lucite tube, and the internal diameter of the organic glass pressing plate is less than circular plate type electricity
The diameter of pole, the first metal guide rod upper end are connected with high voltage power supply, and the aluminum lower cover is connected with ground wire.
2. the paper oil insulation partial discharge test lubricating cup according to claim 1, it is characterized in that：The upper cover through hole is
Threaded hole, first metal guide rod are threaded guide rod.
3. paper oil insulation partial discharge test lubricating cup according to claim 1, it is characterized in that：Second metal guide rod with
Connection mode is threaded connection between circular plate type electrode bottom surface, aluminum lower cover.
4. paper oil insulation partial discharge test lubricating cup according to claim 1, it is characterized in that：On the lucite tube
End is equipped with outer stepped groove, and the organic glass upper cover bottom surface is equipped with corresponding interior stepped groove.
5. paper oil insulation partial discharge test lubricating cup according to claim 1, it is characterized in that：Under the lucite tube
End is equipped with external screw thread, and hd top face is equipped with corresponding internal thread under the aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510179618.3A CN104820171B (en) | 2015-04-15 | 2015-04-15 | A kind of paper oil insulation partial discharge test lubricating cup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510179618.3A CN104820171B (en) | 2015-04-15 | 2015-04-15 | A kind of paper oil insulation partial discharge test lubricating cup |
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| Publication Number | Publication Date |
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| CN104820171A CN104820171A (en) | 2015-08-05 |
| CN104820171B true CN104820171B (en) | 2018-04-13 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974286B (en) * | 2016-06-29 | 2019-06-18 | 国家电网公司 | Paper oil insulation is along face gliding spark discharge experimental rig |
| CN107179488B (en) * | 2017-06-06 | 2024-03-26 | 国网浙江省电力公司电力科学研究院 | Oilpaper insulation partial discharge test device |
| CN108414904A (en) * | 2018-03-27 | 2018-08-17 | 哈尔滨理工大学 | A kind of electrode assembly in transformer oil paper insulation void defects shelf depreciation research |
| CN110426609B (en) * | 2019-07-18 | 2022-01-28 | 中原工学院 | Transformer multi-partial discharge form simulation and test system |
| CN112731074B (en) * | 2020-12-17 | 2023-08-01 | 深圳供电局有限公司 | Oilpaper insulation aging test system |
| CN113188991A (en) * | 2021-05-24 | 2021-07-30 | 攀枝花学院 | Device suitable for flow corrosion and electrochemical in-situ test |
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| CN102540026A (en) * | 2012-01-05 | 2012-07-04 | 中国电力科学研究院 | Oil cup for insulating oil impact characteristic research |
| CN203572919U (en) * | 2013-11-25 | 2014-04-30 | 国家电网公司 | Parameter-adjustable along-surface discharge test model |
| CN203572920U (en) * | 2013-11-25 | 2014-04-30 | 国家电网公司 | Parameter-adjustable suspended discharge test model |
| CN104101820A (en) * | 2014-07-17 | 2014-10-15 | 国网上海市电力公司 | Transformer oil/paper insulation aging experimental device and method |
| CN204731367U (en) * | 2015-04-15 | 2015-10-28 | 广东电网有限责任公司电力科学研究院 | A kind of paper oil insulation partial discharge test lubricating cup |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010073984A (en) * | 2008-09-19 | 2010-04-02 | Toshiba Corp | Partial discharge diagnostic device of stationary inductive electric apparatus |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540026A (en) * | 2012-01-05 | 2012-07-04 | 中国电力科学研究院 | Oil cup for insulating oil impact characteristic research |
| CN203572919U (en) * | 2013-11-25 | 2014-04-30 | 国家电网公司 | Parameter-adjustable along-surface discharge test model |
| CN203572920U (en) * | 2013-11-25 | 2014-04-30 | 国家电网公司 | Parameter-adjustable suspended discharge test model |
| CN104101820A (en) * | 2014-07-17 | 2014-10-15 | 国网上海市电力公司 | Transformer oil/paper insulation aging experimental device and method |
| CN204731367U (en) * | 2015-04-15 | 2015-10-28 | 广东电网有限责任公司电力科学研究院 | A kind of paper oil insulation partial discharge test lubricating cup |
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