CN104198125A - Sealing monitoring method for simulating sealing conditions of transformer bushing - Google Patents
Sealing monitoring method for simulating sealing conditions of transformer bushing Download PDFInfo
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- CN104198125A CN104198125A CN201410457546.XA CN201410457546A CN104198125A CN 104198125 A CN104198125 A CN 104198125A CN 201410457546 A CN201410457546 A CN 201410457546A CN 104198125 A CN104198125 A CN 104198125A
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- sealing
- hydrostatic column
- gas
- monitoring method
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Abstract
The invention relates to a sealing monitoring method for simulating sealing conditions of transformer bushing. The sealing monitoring method includes the following steps: providing a device for simulating the sealing conditions of the transformer bushing; oiling and sealing; installing an SF6 gas density meter and a silicone pot; installing an SF6 gas online testing sensor; for connecting a vacuum pump with SF6 gas injection equipment, vacuumizing the device with a vacuum pump, injecting SF6 gas into the device prior to well sealing; utilizing the SF6 gas density meter to monitor changes of SF6 gas density, and judging the sealing conditions of the device by monitoring the SF6 gas density. Poor sealing of the transformer bushing and internal water inflowing conditions of the transformer bushing are simulated by sealing of the position of an oil filling port and dripping to the interior of the device, temperature of the device can be regulated through external measures, changes of internal oil temperature can be simulated during operation of the transformer bushing, the changes of SF6 gas state quantity and silica gel can be acquired when sealing of the transformer bushing is not good, and active role is played in study of preventing failure of the bushing from occurring.
Description
Technical field
The sealing monitoring method that the present invention relates to a kind of analogue transformer bobbin seal situation, belongs to field of power.
Background technology
As the important accessory of transformer, bushing shell for transformer in the safe operation of electric system in occupation of a very important ring.Sleeve pipe fault tends to cause large-area power-cuts, and brings direct economic loss.Research is found: the beginning of sleeve pipe fault makes moist after poor sealing often or intakes and causes, is therefore badly in need of the sealing of bushing shell for transformer monitor trouble saving generation.In view of bushing shell for transformer bulky, once seal break-off is processed again, to carry out sealing monitoring test workload larger again, and be difficult to its internal temperature to regulate control, therefore be necessary a kind of method that designs analogue transformer bobbin seal situation and its sealing is monitored.
Summary of the invention
The object of the present invention is to provide a kind of sealing monitoring method of analogue transformer bobbin seal situation, facilitate analogue transformer sleeve pipe in good seal, poor sealing and inner inlet situation, observe SF
6the change color of density, pressure, humidity, temperature and the silica gel of gas.
To achieve these goals, technical scheme of the present invention is: a kind of sealing monitoring method of analogue transformer bobbin seal situation, comprises the following steps:
(1) provide the device of an analogue transformer bobbin seal situation, this device is hydrostatic column, the top end face of described hydrostatic column is provided with six hickeys, described six hickeys comprise two external screw joints and four box thread interfaces, and described two external screw joints are all as pouring orifice;
(2) from two pouring orifices, transformer oil is injected to hydrostatic column, till approaching filling, hydrostatic column inner top leaves segment space, then with O-ring seal and nut, pouring orifice is sealed, and ensures that sealing is reliable;
(3) by adapter by two SF with T-valve
6air density meter is arranged on respectively wherein two box thread interfaces, and the silica gel tank that dry intact silica gel is housed is arranged on one of them box thread interface;
(4) by adapter by SF
6gas on-line testing installation of sensors is a box thread interface in the end;
(5) by vacuum pump and SF
6gas injection equipment is connected respectively to two SF
6on the T-valve of air density meter, first with vacuum pump, hydrostatic column is vacuumized, also the air of gas injecting pipe is released simultaneously; In the time that the gaseous tension in hydrostatic column approaches vacuum, stop vacuumizing and by SF
6in gas injection apparatus; As the SF in hydrostatic column
6when gaseous tension reaches 0.5 atmospheric pressure, stop gas injection, by vacuum pump and SF
6the pipeline of gas injection equipment separates from T-valve, and two imports of T-valve are sealed;
(6) utilize SF
6air density meter monitoring SF
6the variation of gas density, by monitoring SF
6gas density is carried out the sealing situation of judgment means, observes the SF of hydrostatic column in good seal situation
6the change color of gas density, pressure, humidity, temperature and silica gel.
Further, the method also comprises step (7), by destroying its O-ring seal or nut does not tighten to simulate poor sealing situation in the pouring orifice place at hydrostatic column, observes the SF of hydrostatic column in poor sealing situation
6the change color of gas density, pressure, humidity, temperature and silica gel.
Further, the method also comprises step (8), carrys out simulated interior flooded condition, by splash into the moisture of scheduled volume in hydrostatic column in the time containing moisture in oil, silica gel color in silica gel tank can change, and observes the SF of hydrostatic column in inner inlet situation
6the change color of gas density, pressure, humidity, temperature and silica gel.
Further, the method is positioned over hydrostatic column in baking oven, utilizes baking oven to make hydrostatic column under different temperatures, the variation of the inner oil temperature of simulation actual moving process middle sleeve.
Further, in step (5), in the time that the gaseous tension in hydrostatic column reaches 200Pa, stop vacuumizing.
Further, described box thread interface comprises three G1/4 〞 box thread interfaces and a G1 〞 box thread interface, two SF
6the T-valve of air density meter is arranged on wherein on two G1/4 〞 box thread interfaces by adapter respectively, and described silica gel tank is arranged on another G1/4 〞 box thread interface, described SF
6gas on-line testing sensor is arranged on G1 〞 box thread interface by adapter.
Further, described SF
6gas on-line testing sensor is GDHT-20 sensor.
Further, described external screw joint is M27 × 1.5 external screw joint.
Further, the diameter of described hydrostatic column is 320mm, is highly 300mm.
Further, described hydrostatic column symmetria bilateralis is provided with handle.
The present invention has following beneficial effect: device volume that the sealing monitoring method of this analogue transformer bobbin seal situation adopts is little, table meter interface is many, introduces SF
6gas and silica gel, carry out the sealing situation of monitoring device inside by density meter, sensor and silica gel tank, be convenient to drip by the encapsulation process to pouring orifice place with to device inside the bad and inner inlet situation of analogue transformer bobbin seal, and can pass through the exterior measures regulating device temperature, carry out the variation of inner oil temperature in analogue transformer sleeve pipe operational process, obtain bushing shell for transformer in the time of poor sealing, SF
6the variation of gaseous state amount and silica gel, positive role has been played in the research that prevention sleeve pipe fault is occurred.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the schematic top plan view of hydrostatic column.
In figure: 1-hydrostatic column, 2-external screw joint, 3-G1/4 〞 box thread interface, 4-G1 〞 box thread interface, 5-SF
6air density meter, 6-silica gel tank, 7-SF
6gas on-line testing sensor, 8-handle.
Embodiment
As shown in Figure 1 and 2, a kind of sealing monitoring method of analogue transformer bobbin seal situation, comprises the following steps:
(1) provide the device of an analogue transformer bobbin seal situation, this device is hydrostatic column 1, the top end face of described hydrostatic column 1 is provided with six hickeys, described six hickeys comprise two external screw joints 2 and four box thread interfaces, and described two external screw joints 2 are all as pouring orifice;
(2) from two pouring orifices, transformer oil is injected to hydrostatic column 1, till approaching filling, hydrostatic column 1 inner top leaves segment space, then with O-ring seal and nut, pouring orifice is sealed, and ensures that sealing is reliable;
(3) by adapter by two SF with T-valve
6air density meter 5 is arranged on respectively wherein two box thread interfaces, and the silica gel tank 6 that dry intact silica gel is housed is arranged on one of them box thread interface;
(4) by adapter by SF
6gas on-line testing sensor 7 is arranged on last box thread interface;
(5) by vacuum pump and SF
6gas injection equipment is connected respectively to two SF
6on the T-valve of air density meter 5, first with vacuum pump, hydrostatic column 1 is vacuumized, also the air of gas injecting pipe is released simultaneously; In the time that the gaseous tension in hydrostatic column 1 approaches vacuum, stop vacuumizing and by SF
6in gas injection apparatus; As the SF in hydrostatic column 1
6when gaseous tension reaches 0.5 atmospheric pressure, stop gas injection, by vacuum pump and SF
6the pipeline of gas injection equipment separates from T-valve, and two imports of T-valve are sealed;
(6) utilize SF
6air density meter 5 is monitored SF
6the variation of gas density, by monitoring SF
6gas density is carried out the sealing situation of judgment means, observes the SF of hydrostatic column 1 in good seal situation
6the change color of gas density, pressure, humidity, temperature and silica gel.
In the present embodiment, the method can also comprise step (7), by destroying its O-ring seal or nut does not tighten to simulate poor sealing situation in the pouring orifice place at hydrostatic column 1, observes the SF of hydrostatic column 1 in poor sealing situation
6the change color of gas density, pressure, humidity, temperature and silica gel.
In the present embodiment, the method can also comprise step (8) again, carrys out simulated interior flooded condition, by the moisture that splashes into scheduled volume in hydrostatic column 1 in the time containing moisture in oil, silica gel color in silica gel tank 6 can change, and observes the SF of hydrostatic column 1 in inner inlet situation
6the change color of gas density, pressure, humidity, temperature and silica gel.
In the present embodiment, the method can also be positioned over hydrostatic column 1 in baking oven, utilizes baking oven to make hydrostatic column 1 under different temperatures, the variation of the inner oil temperature of simulation actual moving process middle sleeve.
In the present embodiment, in step (5), in the time that the gaseous tension in hydrostatic column 1 reaches 200Pa, stop vacuumizing.
In the present embodiment, described external screw joint 2 is M27 × 1.5 external screw joint, and described box thread interface comprises three G1/4 〞 box thread interfaces 3 and 4, two SF of a G1 〞 box thread interface
6the T-valve of air density meter 5 is arranged on wherein on two G1/4 〞 box thread interfaces 3 by adapter respectively, and described silica gel tank 6 is arranged on another G1/4 〞 box thread interface 3, described SF
6gas on-line testing sensor 7 is arranged on G1 〞 box thread interface 4 by adapter.Wherein, described G1 〞 box thread interface 4 is positioned in the middle of the top end face of hydrostatic column 1, and described G1/4 〞 box thread interface 3 and external screw joint 2 are periphery in all sides of G1 〞 box thread interface 4.
In the present embodiment, described SF
6gas on-line testing sensor 7 is GDHT-20 sensor, to monitor in real time SF
6density, pressure, humidity and the temperature of gas, but be not limited to this.For convenient mobile, described hydrostatic column 1 symmetria bilateralis is provided with handle 8, and the diameter of described hydrostatic column 1 is 320mm, is highly 300mm.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. a sealing monitoring method for analogue transformer bobbin seal situation, is characterized in that, comprises the following steps:
(1) provide the device of an analogue transformer bobbin seal situation, this device is hydrostatic column, the top end face of described hydrostatic column is provided with six hickeys, described six hickeys comprise two external screw joints and four box thread interfaces, and described two external screw joints are all as pouring orifice;
(2) from two pouring orifices, transformer oil is injected to hydrostatic column, till approaching filling, hydrostatic column inner top leaves segment space, then with O-ring seal and nut, pouring orifice is sealed, and ensures that sealing is reliable;
(3) by adapter by two SF with T-valve
6air density meter is arranged on respectively wherein two box thread interfaces, and the silica gel tank that dry intact silica gel is housed is arranged on one of them box thread interface;
(4) by adapter by SF
6gas on-line testing installation of sensors is a box thread interface in the end;
(5) by vacuum pump and SF
6gas injection equipment is connected respectively to two SF
6on the T-valve of air density meter, first with vacuum pump, hydrostatic column is vacuumized, also the air of gas injecting pipe is released simultaneously; In the time that the gaseous tension in hydrostatic column approaches vacuum, stop vacuumizing and by SF
6in gas injection apparatus; As the SF in hydrostatic column
6when gaseous tension reaches 0.5 atmospheric pressure, stop gas injection, by vacuum pump and SF
6the pipeline of gas injection equipment separates from T-valve, and two imports of T-valve are sealed;
(6) utilize SF
6air density meter monitoring SF
6the variation of gas density, by monitoring SF
6gas density is carried out the sealing situation of judgment means, observes the SF of hydrostatic column in good seal situation
6the change color of gas density, pressure, humidity, temperature and silica gel.
2. the sealing monitoring method of analogue transformer bobbin seal situation according to claim 1, it is characterized in that: also comprise step (7), by destroying its O-ring seal or nut does not tighten to simulate poor sealing situation in the pouring orifice place at hydrostatic column, observe the SF of hydrostatic column in poor sealing situation
6the change color of gas density, pressure, humidity, temperature and silica gel.
3. the sealing monitoring method of analogue transformer bobbin seal situation according to claim 1 and 2, it is characterized in that: also comprise step (8), carry out simulated interior flooded condition by splash into the moisture of scheduled volume in hydrostatic column, in the time containing moisture in oil, silica gel color in silica gel tank can change, and observes the SF of hydrostatic column in inner inlet situation
6the change color of gas density, pressure, humidity, temperature and silica gel.
4. according to the sealing monitoring method of the analogue transformer bobbin seal situation described in any one in claim 1-3, it is characterized in that: hydrostatic column is positioned in baking oven, utilize baking oven to make hydrostatic column under different temperatures, the variation of the inner oil temperature of simulation actual moving process middle sleeve.
5. according to the sealing monitoring method of the analogue transformer bobbin seal situation described in any one in claim 1-4, it is characterized in that: in step (5), in the time that the gaseous tension in hydrostatic column reaches 200Pa, stop vacuumizing.
6. the sealing monitoring method of analogue transformer bobbin seal situation according to claim 1, is characterized in that: described box thread interface comprises three G1/4 〞 box thread interfaces and a G1 〞 box thread interface, two SF
6the T-valve of air density meter is arranged on wherein on two G1/4 〞 box thread interfaces by adapter respectively, and described silica gel tank is arranged on another G1/4 〞 box thread interface, described SF
6gas on-line testing sensor is arranged on G1 〞 box thread interface by adapter.
7. the sealing monitoring method of analogue transformer bobbin seal situation according to claim 1, is characterized in that: described SF
6gas on-line testing sensor is GDHT-20 sensor.
8. the sealing monitoring method of analogue transformer bobbin seal situation according to claim 1, is characterized in that: described external screw joint is M27 × 1.5 external screw joint.
9. the sealing monitoring method of analogue transformer bobbin seal situation according to claim 1, is characterized in that: the diameter of described hydrostatic column is 320mm, is highly 300mm.
10. the sealing monitoring method of analogue transformer bobbin seal situation according to claim 1, is characterized in that: described hydrostatic column symmetria bilateralis is provided with handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410457546.XA CN104198125B (en) | 2014-09-10 | 2014-09-10 | A kind of sealing monitoring method of analogue transformer bobbin seal situation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410457546.XA CN104198125B (en) | 2014-09-10 | 2014-09-10 | A kind of sealing monitoring method of analogue transformer bobbin seal situation |
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| CN104198125A true CN104198125A (en) | 2014-12-10 |
| CN104198125B CN104198125B (en) | 2016-09-07 |
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| CN201410457546.XA Active CN104198125B (en) | 2014-09-10 | 2014-09-10 | A kind of sealing monitoring method of analogue transformer bobbin seal situation |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459412A (en) * | 2014-12-17 | 2015-03-25 | 国网上海市电力公司 | Transformer thermal ageing real-time simulation measurement device and application thereof |
| CN104748917A (en) * | 2015-04-20 | 2015-07-01 | 江苏宝亨新电气有限公司 | Device for remotely monitoring sealing property of casing pipe of transformer |
| CN106124135A (en) * | 2016-08-31 | 2016-11-16 | 国家电网公司 | A kind of device and method sealing tiny leakage for detecting high-power transformer cannula tip |
| CN110296795A (en) * | 2018-03-22 | 2019-10-01 | 武汉智能装备工业技术研究院有限公司 | A kind of excessive fault detection method of oil-filled bushing oil stream and sampler |
| CN110702341A (en) * | 2019-11-20 | 2020-01-17 | 国网宁夏电力有限公司固原供电公司 | Transformer conservator sealing detection device |
| CN111458663A (en) * | 2020-05-21 | 2020-07-28 | 福州大学 | Oiled paper capacitive bushing moisture monitoring device and method based on air humidity sensing |
| CN111537665A (en) * | 2020-05-21 | 2020-08-14 | 福州大学 | Device and method for simulating moisture migration process in high-voltage oiled paper insulation sleeve |
| CN111721350A (en) * | 2020-06-30 | 2020-09-29 | 南昌工程学院 | Intelligent sensor |
| CN112305013A (en) * | 2020-10-22 | 2021-02-02 | 张霞玲 | Big data type transformer safety monitoring and early warning management system |
| CN112816140A (en) * | 2020-12-31 | 2021-05-18 | 国网湖南省电力有限公司 | Device and method for field detection of oil leakage performance of high-voltage bushing of transformer |
| CN114323421A (en) * | 2021-12-08 | 2022-04-12 | 兰州空间技术物理研究所 | Device and method for protecting IE514 separation rule from humidity |
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| CN203431383U (en) * | 2013-08-30 | 2014-02-12 | 国家电网公司 | Gas pressure meter tee-joint connector assembly for electrical power system |
| CN203488991U (en) * | 2013-09-25 | 2014-03-19 | 内蒙古电力（集团）有限责任公司薛家湾供电局 | Manual inflation vacuumizing device of sulfur hexafluoride electrical device |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459412A (en) * | 2014-12-17 | 2015-03-25 | 国网上海市电力公司 | Transformer thermal ageing real-time simulation measurement device and application thereof |
| CN104459412B (en) * | 2014-12-17 | 2018-05-22 | 国网上海市电力公司 | A kind of transformer heat ageing real-time Simulation measuring device and its application |
| CN104748917A (en) * | 2015-04-20 | 2015-07-01 | 江苏宝亨新电气有限公司 | Device for remotely monitoring sealing property of casing pipe of transformer |
| CN106124135A (en) * | 2016-08-31 | 2016-11-16 | 国家电网公司 | A kind of device and method sealing tiny leakage for detecting high-power transformer cannula tip |
| CN110296795A (en) * | 2018-03-22 | 2019-10-01 | 武汉智能装备工业技术研究院有限公司 | A kind of excessive fault detection method of oil-filled bushing oil stream and sampler |
| CN110702341A (en) * | 2019-11-20 | 2020-01-17 | 国网宁夏电力有限公司固原供电公司 | Transformer conservator sealing detection device |
| CN111537665B (en) * | 2020-05-21 | 2022-03-15 | 福州大学 | Device and method for simulating moisture migration process in high-voltage oiled paper insulation sleeve |
| CN111537665A (en) * | 2020-05-21 | 2020-08-14 | 福州大学 | Device and method for simulating moisture migration process in high-voltage oiled paper insulation sleeve |
| CN111458663B (en) * | 2020-05-21 | 2021-11-02 | 福州大学 | Oiled paper capacitive bushing moisture monitoring device and method based on air humidity sensing |
| CN111458663A (en) * | 2020-05-21 | 2020-07-28 | 福州大学 | Oiled paper capacitive bushing moisture monitoring device and method based on air humidity sensing |
| CN111721350A (en) * | 2020-06-30 | 2020-09-29 | 南昌工程学院 | Intelligent sensor |
| CN112305013A (en) * | 2020-10-22 | 2021-02-02 | 张霞玲 | Big data type transformer safety monitoring and early warning management system |
| CN112816140A (en) * | 2020-12-31 | 2021-05-18 | 国网湖南省电力有限公司 | Device and method for field detection of oil leakage performance of high-voltage bushing of transformer |
| CN112816140B (en) * | 2020-12-31 | 2023-08-15 | 国网湖南省电力有限公司 | Device and method for on-site detection of oil seepage performance of high-voltage bushing of transformer |
| CN114323421A (en) * | 2021-12-08 | 2022-04-12 | 兰州空间技术物理研究所 | Device and method for protecting IE514 separation rule from humidity |
| CN114323421B (en) * | 2021-12-08 | 2023-07-21 | 兰州空间技术物理研究所 | Device and method for protecting IE514 separating gauge from humidity |
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