CN105044569A - Oil paper insulation electric heating combined aging sealing system - Google Patents

Oil paper insulation electric heating combined aging sealing system Download PDF

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Publication number
CN105044569A
CN105044569A CN201510377644.7A CN201510377644A CN105044569A CN 105044569 A CN105044569 A CN 105044569A CN 201510377644 A CN201510377644 A CN 201510377644A CN 105044569 A CN105044569 A CN 105044569A
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China
Prior art keywords
sealing system
cavity
electrode
earth terminal
sealing
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Pending
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CN201510377644.7A
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Chinese (zh)
Inventor
张冠军
魏艳慧
有晓宇
王彦博
赵思翔
穆海宝
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Xian Jiaotong University
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Xian Jiaotong University
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Priority to CN201510377644.7A priority Critical patent/CN105044569A/en
Publication of CN105044569A publication Critical patent/CN105044569A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an oil paper insulation electric heating combined aging sealing system, is used for a strict oil paper insulation electric heating combined aging experiment, and includes an electrical aging sealing system, a thermal aging sealing system, an oil storage tank and a nitrogen gas cylinder. The thermal aging sealing system includes a sealing cavity capable of being opened, and a thermal aging system pressure gauge and a temperature control meter are arranged on a side wall of the sealing cavity; and the electrical aging sealing system is arranged in the sealing cavity of the thermal aging sealing system, and includes a cavity with an upward opening, the top of the cavity is sealed through an epoxy sealing plate, an oil filling port and an inflation inlet are arranged on the epoxy sealing plate, an electrical aging system pressure gauge and a vacuum extraction opening are arranged on a cavity wall of the cavity, the cavity is internally provided with an electrical aging electrode used for an experiment, and a high voltage end and a grounding end of the electrical aging electrode are led out through the epoxy sealing plate; and the oil storage tank and the nitrogen gas cylinder are connected to the oil filling port and the inflation inlet respectively through high temperature pipes.

Description

Paper oil insulation electric heating combines aging sealing system
Technical field:
The present invention relates to a kind of paper oil insulation electric heating and combine aging sealing system, for strict paper oil insulation electric heating associating senile experiment.
Background technology:
High voltage electric power equip ment is in actual motion, and Oil-Paper Insulation is inevitably subject to the combined action of multiple associating stress, and common associating stress is electric heating associating stress.In During Process of Long-term Operation, electric heating associating stress causes Oil-Paper Insulation aging gradually, causes electrical equipment fault.Therefore electric heating associating aging characteristics are studied, significant to the safe operation of oil paper insulation electrical equipment.
At present, the ageing system in laboratory, main adopts the uncovered aging techniques of single stress, causes the product produced in ageing process to dissipate, and in this and actual motion, the sealing running status of transformer is inconsistent.Therefore need invention a kind ofly to combine aging sealing system for paper oil insulation electric heating, simulate actual electric power equipment running status, this has great importance to the associating of research electric heating is aging.
Summary of the invention:
The object of the invention is to for the deficiencies in the prior art, provide a kind of paper oil insulation electric heating and combine aging sealing system, its aging cavity seals completely, and ageing process is very similar to actual motion state.
For achieving the above object, the present invention adopts following technical scheme to be achieved:
Paper oil insulation electric heating combines aging sealing system, comprises voltage ageing sealing system, heat ageing sealing system, fuel reserve tank and nitrogen cylinder; Wherein,
Heat ageing sealing system comprises a seal chamber that can open, and the sidewall of sealing cavity is provided with heat ageing system pressure table and temperature controller;
Voltage ageing sealing system is arranged in the seal chamber of heat ageing sealing system, comprise the cavity of an opening upwards, the top of cavity is sealed by epoxy sealing plate, epoxy sealing plate is provided with pouring orifice and inflation inlet, the cavity wall of cavity is provided with voltage ageing system pressure table and vacuum pumping opening, be provided with the voltage ageing electrode for testing in cavity, the high-pressure side of voltage ageing electrode and earth terminal are drawn by epoxy sealing plate;
Fuel reserve tank and nitrogen cylinder are connected to pouring orifice and inflation inlet respectively by high-temperature pipe.
The present invention further improves and is: voltage ageing electrode comprises the top electrode be arranged in parallel, T-shaped bottom electrode and pillar plate from top to bottom; Wherein, the top of top electrode is connected to high-pressure side by electrode column, pillar plate offers through hole, T-shaped bottom electrode comprises vertically disposed leveling board and vertical bar, the vertical bar of T-shaped bottom electrode is through the through hole on pillar plate, and the vertical bar of T-shaped bottom electrode can go out free-extension by the through hole on pillar plate, and vertical bar is set with spring, and this spring is between the leveling board and pillar plate of T-shaped bottom electrode; Pillar plate is connected to earth terminal by electrode column; During experiment, paper oil insulation test product is placed between the leveling board of top electrode and T-shaped bottom electrode.
The present invention further improves and is: earth terminal comprises the first earth terminal and the second earth terminal, and pillar plate is connected to the first earth terminal and the second earth terminal respectively by electrode column.
The present invention further improves and is: the electrode column of connecting struts plate to the first earth terminal and the second earth terminal is all set with insulating sleeve.
The present invention further improves and is: the electrode column of connecting struts plate to the first earth terminal and the second earth terminal and be connected the electrode column of top electrode to temperature end, is all connected with high-pressure side with the first earth terminal, the second earth terminal respectively by dismounting end.
The present invention further improves and is: be provided with the O-ring seal for sealing between epoxy sealing plate and the top of cavity.
The present invention further improves and is: the cavity bottom of voltage ageing sealing system is provided with foot-supporting frame.
The present invention further improves and is: the annular seal space body wall of voltage ageing sealing system and foot-supporting frame are made by high-boron-silicon glass.
The present invention further improves and is: the cavity wall of cavity is also provided with pressure valve.
The present invention further improves and is: the high-temperature pipe connecting fuel reserve tank and pouring orifice and the high-temperature pipe being connected nitrogen cylinder and inflation inlet are provided with valve.
Relative to prior art, remarkable result of the present invention is:
The present invention by integral sealing, ensure that the product indiffusion in electric heating associating ageing process, solves uncovered aging and product dissipation problem that single stress is aging brought.The inflation inlet that epoxy sealing plate is provided with, air-free state when fully having reproduced initial in the seal chamber in power equipment actual moving process.By the tensimeter that annular seal space body wall is provided with, the pressure state in seal chamber can be observed at any time, if pressure is lower than setting value, nitrogen is filled with by inflation inlet, if higher than setting value, then pressure valve automatic spring, while making experiment and actual motion state consistency, also ensure that the security of experiment.In addition, experimentally need, if only need vacuum impregnation paper oil insulation test product or only carry out heat ageing, then voltage ageing electrode replaceable; If only need voltage ageing, then voltage ageing sealing system is taken out in heat ageing sealing system, achieve integrated multifunctional.
Further, the cavity wall of voltage ageing sealing system is made up of high-boron-silicon glass, cavity transparent visual, is convenient to observe.
In sum, the present invention combines aging sealing system by voltage ageing sealing system and heat ageing System's composition electric heating, makes paper oil insulation ageing process very similar to power equipment actual motion state.Inside cavity oiling state is directly observed by visual annular seal space body wall; By inflation inlet, nitrogen is full of seal chamber, makes its overall maintenance at a certain pressure; In ageing process, seal chamber internal pressure changes, and observe, and inflated with nitrogen makes its pressure remain unchanged again by voltage table.Annular seal space body wall is provided with pressure valve, and when in seal chamber, pressure exceedes setting value, pressure valve automatic spring, makes experimentation safe and reliable.In addition, according to actual needs, can dismantle voltage ageing electrode, only carry out airtight paper oil insulation test product vacuum impregnation or heat ageing; If only need voltage ageing, then voltage ageing sealing system is taken out in heat ageing sealing system.Invention achieves integrated multifunctional, flexible multi-purpose effect.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of aging sealing system of the present invention;
Wherein: 1-voltage ageing sealing system; 2-fuel reserve tank; 3-nitrogen cylinder; 4-pouring orifice; 5-inflation inlet; 6-high-pressure side; 7-first earth terminal; 8-second earth terminal; 9-paper oil insulation test product; 10-top electrode; 11-T type bottom electrode; 12-electrode support; 13-pressure valve; 14-epoxy sealing plate; 15-cavity wall; 16-foot-supporting frame; 17-heat ageing system pressure table; 18-temperature controller; 19-high-temperature pipe; 20-valve; 21-heat ageing sealing system; 22-voltage ageing system pressure table; 23-vacuum pumping opening; 24-O-ring seal; 25-dismantles end; 26-voltage ageing electrode; 27-pillar plate.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, a kind of paper insulated electrothermic of the present invention's oil combines aging sealing system, comprises voltage ageing sealing system 1, heat ageing sealing system 21, fuel reserve tank 2 and nitrogen cylinder 3.
Wherein heat ageing sealing system 21 comprises a seal chamber that can open, and the sidewall of sealing cavity is provided with heat ageing system pressure table 17 and temperature controller 18;
Voltage ageing sealing system 1 is arranged in the seal chamber of heat ageing sealing system 21, comprise the cavity of an opening upwards, the top of cavity is sealed by epoxy sealing plate 14, and the O-ring seal 24 be provided with between epoxy sealing plate 14 and the top of cavity for sealing, epoxy sealing plate 14 is provided with pouring orifice 4 and inflation inlet 5, injected through vacuum drying mineral oil to inside cavity by pouring orifice 4, paper oil insulation test product 9 fully floods, by inflation inlet to nitrogen injection in seal chamber, be that seal chamber inside is in complete air-free state; The cavity wall 15 of cavity is provided with voltage ageing system pressure table 22 and vacuum pumping opening 23, the air in airtight cavity can drain by vacuum pumping opening 23 before vacuum oil; Be provided with the voltage ageing electrode 26 for testing in cavity, the high-pressure side 6 of voltage ageing electrode 26 and earth terminal are drawn by epoxy sealing plate 14;
Fuel reserve tank 2 and nitrogen cylinder 3 are connected to pouring orifice 4 and inflation inlet 5 respectively by high-temperature pipe 19.
Further, voltage ageing electrode 26 comprises the top electrode 10, T-shaped bottom electrode 11 and the pillar plate 27 that be arranged in parallel from top to bottom; Wherein, the top of top electrode 10 is connected to high-pressure side 6 by electrode column 12, pillar plate 27 offers through hole, T-shaped bottom electrode 11 comprises vertically disposed leveling board and vertical bar, the vertical bar of T-shaped bottom electrode 11 is through the through hole on pillar plate 27, and the vertical bar of T-shaped bottom electrode 11 can through hole free-extension on pillar plate 27, and vertical bar is set with spring, and this spring is between the leveling board and pillar plate 27 of T-shaped bottom electrode 11; Pillar plate 27 is connected to earth terminal by electrode column 12; During experiment, paper oil insulation test product is placed between the leveling board of top electrode 10 and T-shaped bottom electrode 11.In addition, earth terminal comprises the first earth terminal 7 and the second earth terminal 8, and pillar plate 27 is connected to the first earth terminal 7 and the second earth terminal 8 respectively by electrode column 12.Further, the electrode column 12 of connecting struts plate 27 to the first earth terminal 7 and the second earth terminal 8 is all set with insulating sleeve.
Further, the electrode column 12 of connecting struts plate 27 to the first earth terminal 7 and the second earth terminal 8 and be connected the electrode column 12 of top electrode 10 to high-pressure side 6, is all connected with high-pressure side 6 with the first earth terminal 7, second earth terminal 8 respectively by dismounting end 25.
Further, the cavity bottom of voltage ageing sealing system 1 is provided with foot-supporting frame 16.Annular seal space body wall 15 and the foot-supporting frame 16 of voltage ageing sealing system 1 are made by high-boron-silicon glass, make the oiling state in seal chamber and ageing process transparent visual and evenly aging, avoid the electric discharge phenomena not easily discovered in experimentation.
Further, the cavity wall 15 of cavity is also provided with pressure valve 13, observes seal chamber internal pressure by voltage ageing system pressure table 22, in ageing process, pressure is too small, then be filled with nitrogen at any time, if pressure is excessive, pressure valve is ejected, and ensure that the security of experiment.The high-temperature pipe 19 connecting fuel reserve tank 2 and pouring orifice 4 and the high-temperature pipe 19 being connected nitrogen cylinder 3 and inflation inlet 5 are provided with valve 20.
Voltage ageing sealing system 1 and heat ageing sealing system 21 can be used alone.If in practical operation, only need vacuum impregnation test product or only carry out heat ageing, directly voltage ageing electrode can be dismantled, not affect sealing system completely.Same, if only need voltage ageing, then voltage ageing sealing system is taken out in heat ageing sealing system.
In order to further understand the present invention, now an explanation is done to its course of work.
As shown in Figure 1, a kind of paper insulated electrothermic of the present invention combines aging sealing system, time initial, sets all valve original states as closing.
The first step, by preparing paper oil insulation test product 9 as in the middle of the top electrode 10 of voltage ageing electrode 26 and T-shaped bottom electrode 11, is sealed epoxy sealing plate 14 by O-ring seal 24.Afterwards, the valve of vacuum pumping opening 23 is opened.
Second step, by the temperature of heat ageing sealing system 21, be set as temperature required by temperature controller 18, after temperature reaches design temperature and is stable, carry out vacuum pumping, open valve 20, make oil enter voltage ageing sealing system 1 by high-temperature pipe 19, vacuum state is observed by heat ageing system pressure table 17 simultaneously.By the oiling conditions in perspective cavity wall 15 observable voltage ageing sealing system 1 cavity.
3rd step, after oiling completes, closes the valve 20 be connected with fuel reserve tank 2 at once, opens the valve 20 be connected with nitrogen cylinder 3.By operation nitrogen cylinder 3, make nitrogen inject voltage ageing sealing system 1 through high-temperature pipe 19, observed the pressure in voltage ageing sealing system 1 by voltage ageing system pressure table 22.
4th step, after reaching setting value, after safe operation, opens rapidly the cavity door of heat ageing sealing system 21, rapidly by the valve closing of vacuum pumping opening 23.Again close the cavity door of heat ageing sealing system 21, the temperature of heat ageing sealing system 21 is elevated to required numerical value.
5th step, high-pressure side 6 and the first earth terminal 7 or the second earth terminal 8 are drawn by lead end, be connected, carry out related experiment afterwards with experimental facilities.
In addition, if only carry out test product vacuum impregnation or single stress heat ageing, then by dismounting end 25, voltage ageing electrode 26 is dismantled.If only need voltage ageing, only voltage ageing sealing system 1 need be taken out in heat ageing sealing system 21.

Claims (10)

1. paper oil insulation electric heating combines aging sealing system, it is characterized in that: comprise voltage ageing sealing system (1), heat ageing sealing system (21), fuel reserve tank (2) and nitrogen cylinder (3); Wherein,
Heat ageing sealing system (21) comprises a seal chamber that can open, and the sidewall of sealing cavity is provided with heat ageing system pressure table (17) and temperature controller (18);
Voltage ageing sealing system (1) is arranged in the seal chamber of heat ageing sealing system (21), comprise the cavity of an opening upwards, the top of cavity is by epoxy sealing plate (14) sealing, epoxy sealing plate (14) is provided with pouring orifice (4) and inflation inlet (5), the cavity wall (15) of cavity is provided with voltage ageing system pressure table (22) and vacuum pumping opening (23), the voltage ageing electrode (26) for testing is provided with in cavity, the high-pressure side (6) of voltage ageing electrode (26) and earth terminal are drawn by epoxy sealing plate (14),
Fuel reserve tank (2) and nitrogen cylinder (3) are connected to pouring orifice (4) and inflation inlet (5) respectively by high-temperature pipe (19).
2. paper oil insulation electric heating according to claim 1 combines aging sealing system, it is characterized in that: voltage ageing electrode (26) comprises the top electrode (10) be arranged in parallel, T-shaped bottom electrode (11) and pillar plate (27) from top to bottom; Wherein, the top of top electrode (10) is connected to high-pressure side (6) by electrode column (12), (27) offer through hole to pillar plate, T-shaped bottom electrode (11) comprises vertically disposed leveling board and vertical bar, the vertical bar of T-shaped bottom electrode (11) is through the through hole on pillar plate (27), and the vertical bar of T-shaped bottom electrode (11) can go out free-extension by the through hole on pillar plate (27), vertical bar is set with spring, and this spring is positioned between the leveling board of T-shaped bottom electrode (11) and pillar plate (27); Pillar plate (27) is connected to earth terminal by electrode column (12); During experiment, paper oil insulation test product is placed between the leveling board of top electrode (10) and T-shaped bottom electrode (11).
3. paper oil insulation electric heating according to claim 2 combines aging sealing system, it is characterized in that: earth terminal comprises the first earth terminal (7) and the second earth terminal (8), pillar plate (27) is connected to the first earth terminal (7) and the second earth terminal (8) respectively by electrode column (12).
4. paper oil insulation electric heating according to claim 3 combines aging sealing system, it is characterized in that: connecting struts plate (27) is all set with insulating sleeve to the electrode column (12) of the first earth terminal (7) and the second earth terminal (8).
5. paper oil insulation electric heating according to claim 3 combines aging sealing system, it is characterized in that: connecting struts plate (27) to the first earth terminal (7) and the second earth terminal (8) electrode column (12) and be connected the electrode column (12) of top electrode (10) to temperature end (6), be all connected with high-pressure side (6) with the first earth terminal (7), the second earth terminal (8) respectively by dismounting end (25).
6. paper oil insulation electric heating according to claim 1 combines aging sealing system, it is characterized in that: be provided with the O-ring seal (24) for sealing between epoxy sealing plate (14) and the top of cavity.
7. paper oil insulation electric heating according to claim 1 combines aging sealing system, it is characterized in that: the cavity bottom of voltage ageing sealing system (1) is provided with foot-supporting frame (16).
8. paper oil insulation electric heating according to claim 7 combines aging sealing system, it is characterized in that: annular seal space body wall (15) and the foot-supporting frame (16) of voltage ageing sealing system (1) are made by high-boron-silicon glass.
9. paper oil insulation electric heating according to claim 1 combines aging sealing system, it is characterized in that: the cavity wall (15) of cavity is also provided with pressure valve (13).
10. paper oil insulation electric heating according to claim 1 combines aging sealing system, it is characterized in that: the high-temperature pipe (19) connecting fuel reserve tank (2) and the high-temperature pipe (19) of pouring orifice (4) and be connected nitrogen cylinder (3) and inflation inlet (5) is provided with valve (20).
CN201510377644.7A 2015-07-01 2015-07-01 Oil paper insulation electric heating combined aging sealing system Pending CN105044569A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106404644A (en) * 2016-08-24 2017-02-15 中车株洲电机有限公司 Test device and test method
CN107199718A (en) * 2017-04-27 2017-09-26 苏州宝骅密封科技股份有限公司 A kind of impregnation technology for being used to prepare high tight ness rating seal
CN108459215A (en) * 2018-01-25 2018-08-28 广东中鹏电气有限公司 Vacuum oil and the operating method of nitrogen is rushed during a kind of degradation
CN108627749A (en) * 2018-03-20 2018-10-09 中国电力科学研究院有限公司 A kind of closed local discharge signal measuring device and measuring method
CN109406961A (en) * 2018-10-26 2019-03-01 华北电力大学 A kind of power electronic devices insulation test device
CN109507551A (en) * 2018-11-22 2019-03-22 西南交通大学 The transformer oil paper insulation test platform of alternating current-direct current and positive and negative pressure when considering long
CN109901029A (en) * 2018-09-20 2019-06-18 中国电力科学研究院有限公司 The long-term shelf test device of all-sealed paper oil insulation nitrogen charging, method
CN110133461A (en) * 2019-06-19 2019-08-16 国网河北省电力有限公司电力科学研究院 The ageing test apparatus and application method of transformer insulated oilpaper
CN111051902A (en) * 2017-07-25 2020-04-21 皇虎科技(加拿大)有限公司 System and method for automatic burn-in testing on integrated circuit devices
CN111880054A (en) * 2020-07-08 2020-11-03 国网电力科学研究院武汉南瑞有限责任公司 Transformer oil paper insulation long-time electric heating combined aging experimental device and method
CN112595946A (en) * 2021-03-02 2021-04-02 奥顿电气集团有限公司 Insulating paperboard electrical strength experiment electrode
CN113049927A (en) * 2021-03-09 2021-06-29 海南电网有限责任公司电力科学研究院 Transformer oil paper insulation aging degree detection device

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106404644A (en) * 2016-08-24 2017-02-15 中车株洲电机有限公司 Test device and test method
CN106404644B (en) * 2016-08-24 2020-04-17 中车株洲电机有限公司 Testing device and testing method
CN107199718B (en) * 2017-04-27 2019-05-31 苏州宝骅密封科技股份有限公司 A kind of impregnation technology being used to prepare high tightness sealing element
CN107199718A (en) * 2017-04-27 2017-09-26 苏州宝骅密封科技股份有限公司 A kind of impregnation technology for being used to prepare high tight ness rating seal
CN111051902A (en) * 2017-07-25 2020-04-21 皇虎科技(加拿大)有限公司 System and method for automatic burn-in testing on integrated circuit devices
CN108459215A (en) * 2018-01-25 2018-08-28 广东中鹏电气有限公司 Vacuum oil and the operating method of nitrogen is rushed during a kind of degradation
CN108627749A (en) * 2018-03-20 2018-10-09 中国电力科学研究院有限公司 A kind of closed local discharge signal measuring device and measuring method
CN109901029A (en) * 2018-09-20 2019-06-18 中国电力科学研究院有限公司 The long-term shelf test device of all-sealed paper oil insulation nitrogen charging, method
CN109406961A (en) * 2018-10-26 2019-03-01 华北电力大学 A kind of power electronic devices insulation test device
CN109507551A (en) * 2018-11-22 2019-03-22 西南交通大学 The transformer oil paper insulation test platform of alternating current-direct current and positive and negative pressure when considering long
CN110133461A (en) * 2019-06-19 2019-08-16 国网河北省电力有限公司电力科学研究院 The ageing test apparatus and application method of transformer insulated oilpaper
CN111880054A (en) * 2020-07-08 2020-11-03 国网电力科学研究院武汉南瑞有限责任公司 Transformer oil paper insulation long-time electric heating combined aging experimental device and method
CN112595946A (en) * 2021-03-02 2021-04-02 奥顿电气集团有限公司 Insulating paperboard electrical strength experiment electrode
CN112595946B (en) * 2021-03-02 2021-05-07 奥顿电气集团有限公司 Insulating paperboard electrical strength experiment electrode
CN113049927A (en) * 2021-03-09 2021-06-29 海南电网有限责任公司电力科学研究院 Transformer oil paper insulation aging degree detection device

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