CN104748917A - Device for remotely monitoring sealing property of casing pipe of transformer - Google Patents
Device for remotely monitoring sealing property of casing pipe of transformer Download PDFInfo
- Publication number
- CN104748917A CN104748917A CN201510188701.7A CN201510188701A CN104748917A CN 104748917 A CN104748917 A CN 104748917A CN 201510188701 A CN201510188701 A CN 201510188701A CN 104748917 A CN104748917 A CN 104748917A
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- China
- Prior art keywords
- casing pipe
- gas
- valve
- transformer
- way valve
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Abstract
The invention discloses a device for remotely monitoring a sealing property of a casing pipe of a transformer. The device comprises an adapter, a three-way valve, an SF6 gas density sensor, a vacuum pump and an SF6 gas bottle, wherein the SF6 gas density sensor is connected with the three-way valve; an outlet of the three-way valve is connected with an oil injection opening in a casing pipe expansion tank through the adapter; the vacuum pump is connected with an inlet of the three-way valve; the SF6 gas bottle is connected with another inlet of the three-way valve; and signals are transmitted between the SF6 gas density sensor and a remote PC (personal computer) through a PLC (programmable logic controller), an industrial personal computer and a GPRS (general packet radio service) module. The device has the advantages that SF6 gas is inflated in the casing pipe of the transformer, the density of the SF6 gas in the casing pipe is monitored remotely to monitor the sealing condition of the casing pipe, the sealing property of the casing pipe can be monitored in real time, problems can be found out in time in the early stage of sealing loss of the casing pipe, a major power grid accident of explosion caused by the reason that water enters the casing pipe and the casing pipe is affected with damp can be avoided effectively, and the economic benefit on safe running of a power grid is quite high.
Description
Technical field
The present invention relates to power equipment remote monitoring field, particularly a kind of device for remote monitoring bushing shell for transformer sealing condition.
Background technology
By adverse weather conditions, bushing shell for transformer causes internal discharge even to explode fault because of watered and wetting is increasing, causes harmful effect to the safe and stable operation of grid equipment.
At present, for monitoring and the how Timeliness coverage fault of bushing shell for transformer inner sealing situation, temporarily not relevant research and counter-measure, existing test method and on-Line Monitor Device all cannot to be made moist to sleeve pipe in the very first time and be sent early warning, and existing monitoring equipment is confined to field monitoring, remote monitoring can not be carried out.If remote monitoring early warning can be realized, so the safe operation of power equipment is just had and ensured more reliably.
Summary of the invention
Goal of the invention: for the problems referred to above, the object of this invention is to provide a kind of device for remote monitoring bushing shell for transformer sealing, realizes remote monitoring, Real-Time Monitoring, early warning in time.
Technical scheme: a kind of device of remote monitoring bushing shell for transformer sealing, comprises adapter, T-valve, SF
6gas Density Sensor, vacuum pump, SF
6gas cylinder, described SF
6gas Density Sensor is connected with described T-valve, and the outlet of described T-valve is communicated with the pouring orifice on sleeve pipe conservator by described adapter, and described vacuum pump is connected with an import of described T-valve, described SF
6gas cylinder is connected with another import of described T-valve;
Described SF
6signal transmissions is formed by PLC, industrial computer, GPRS module between Gas Density Sensor and long-range PC.
Described PLC is with analog quantity input and digital output mouth.
Described GPRS module sends data.
Described long-range PC receiver gases measuring density data.
Described vacuum pump, described SF
6the pipeline that gas cylinder is connected with described T-valve is provided with valve, conveniently vacuumizes and inflate.
Beneficial effect: compared with prior art, advantage of the present invention is by being filled with SF in bushing shell for transformer
6gas, SF in remote monitoring sleeve pipe
6gas density carrys out the sealing situation of monitoring sleeve, thus the real-time monitoring realized bobbin seal, can in bobbin seal impaired initial stage Timeliness coverage problem, effectively prevent the large-scale power grid accident that set off an explosion because of inside pipe casing watered and wetting, to electric power netting safe running, there is high economic benefit.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention structural representation;
Fig. 2 is remote monitoring schematic diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
As shown in Figure 1, a kind of device of remote monitoring bushing shell for transformer sealing, comprises adapter 1, T-valve 2, SF
6gas Density Sensor 3, vacuum pump 4, SF
6gas cylinder 5, and PLC, industrial computer, GPRS module form signal transmission component.
The SF with T-valve 2 is installed at pouring orifice 8 place on bushing shell for transformer conservator 7
6gas Density Sensor 3, the outlet of T-valve 2 is communicated with pouring orifice 8 by adapter 1, and vacuum pump 4 is connected with an import of T-valve 2, is extracted out by the air in sleeve pipe, SF
6gas cylinder 5 is connected with another import of T-valve 2, in sleeve pipe, be filled with SF
6gas.Conveniently vacuumize and insufflation gas, vacuum pump 4, SF
6the pipeline that gas cylinder 5 is connected with T-valve 2 is provided with valve 6.
During installation, the air in sleeve pipe extracted out by vacuum pump 4, when the pressure in sleeve pipe vacuumizes close to stopping time vacuum (such as when the pressure in sleeve pipe reaches 200Pa), and then is filled with SF
6gas, enters sleeve pipe by pouring orifice 8, stops gas injection, two imports of good seal T-valve 2 when the gaseous tension in sleeve pipe reaches 0.05MPa.
SF
6gas-insulated is functional, has been widely used in the built-in electrical insulation of isolating switch at present, can meet the requirement of high-voltage operation, and its relative molecular weight is greater than air, is slightly soluble in transformer oil.
As shown in Figure 2, described SF
6signal transmissions is formed by PLC, industrial computer, GPRS module between Gas Density Sensor 3 and long-range PC.PLC is with analog quantity input and digital output mouth, and GPRS module sends data, long-range PC receiver gases measuring density data.
PLC self carries out A/D conversion, gas density in sleeve pipe is reacted on industrial computer and is transferred on long-range PC, to the SF of inside pipe casing
6gas density carries out Real-Time Monitoring.When bobbin seal is good, SF
6the density value of gas can not change; When bobbin seal is bad, not only SF
6gas can be revealed, and the moisture in air also can penetrate into inside pipe casing by bobbin seal weakness, now industrial computer and long-range PC shows SF
6the density of gas drops to outside normal range.Therefore, SF can be passed through
6the change of gas density value judges that whether the sealing of bushing shell for transformer is good.
In transformer actual motion, when bushing shell for transformer good seal, due to the influence of temperature change by Transformer, the insulating oil of inside pipe casing can expand with heat and contract with cold, thus causes SF
6gas density can change within the specific limits, therefore can preset a warning value.Work as SF
6when the density of gas drops to predetermined warning value, industrial computer and long-range PC automatic alarm, illustrate that bobbin seal goes wrong, and the test that should have a power failure, checks.
The present invention is convenient to inject SF in sleeve pipe
6gas, then by monitoring SF
6the change of gas density value judges bushing shell for transformer whether poor sealing, can by the Real-Time Monitoring to bobbin seal, to go forward side by side row relax in initial stage Timeliness coverage defect of making moist, inside pipe casing is avoided to insulate deteriorated further and cause power grid accident, guarantee electric power netting safe running, creatively utilize PLC, GPRS communication remote monitoring bushing shell for transformer sealing condition, solve a difficult problem for bobbin seal monitoring.
Claims (5)
1. a device for remote monitoring bushing shell for transformer sealing, is characterized in that: comprise adapter (1), T-valve (2), SF
6gas Density Sensor (3), vacuum pump (4), SF
6gas cylinder (5), described SF
6gas Density Sensor (3) is connected with described T-valve (2), the outlet of described T-valve (2) is communicated with the pouring orifice on sleeve pipe conservator by described adapter (1), described vacuum pump (4) is connected with an import of described T-valve (2), described SF
6gas cylinder (5) is connected with another import of described T-valve (2);
Described SF
6signal transmissions is formed by PLC, industrial computer, GPRS module between Gas Density Sensor (3) and long-range PC.
2. the device of a kind of remote monitoring bushing shell for transformer sealing according to claim 1, is characterized in that: described PLC is with analog quantity input and digital output mouth.
3. the device of a kind of remote monitoring bushing shell for transformer sealing according to claim 1, is characterized in that: described GPRS module sends data.
4. the device of a kind of remote monitoring bushing shell for transformer sealing according to claim 1, is characterized in that: described long-range PC receiver gases measuring density data.
5. the device of a kind of remote monitoring bushing shell for transformer sealing according to claim 1, is characterized in that: described vacuum pump (4), described SF
6the pipeline that gas cylinder (5) is connected with described T-valve (2) is provided with valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510188701.7A CN104748917A (en) | 2015-04-20 | 2015-04-20 | Device for remotely monitoring sealing property of casing pipe of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510188701.7A CN104748917A (en) | 2015-04-20 | 2015-04-20 | Device for remotely monitoring sealing property of casing pipe of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104748917A true CN104748917A (en) | 2015-07-01 |
Family
ID=53588936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510188701.7A Pending CN104748917A (en) | 2015-04-20 | 2015-04-20 | Device for remotely monitoring sealing property of casing pipe of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104748917A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326153A (en) * | 2020-09-23 | 2021-02-05 | 国网江苏省电力有限公司电力科学研究院 | Transformer bushing sealing degree monitoring device and method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202304897U (en) * | 2011-11-07 | 2012-07-04 | 福建亿榕信息技术有限公司 | On-line monitoring system for SF6 electrical equipment |
| US20140041738A1 (en) * | 2012-08-07 | 2014-02-13 | Afton Renee Coleman | Apparatus for fluid control device leak detection |
| CN104165735A (en) * | 2014-06-16 | 2014-11-26 | 浙江工业大学 | Complete equipment for airtightness test of gas cylinder |
| CN104198125A (en) * | 2014-09-10 | 2014-12-10 | 国家电网公司 | Sealing monitoring method for simulating sealing conditions of transformer bushing |
| CN204043858U (en) * | 2014-09-10 | 2014-12-24 | 国家电网公司 | A kind of sealing monitoring device of analogue transformer bobbin seal situation |
| CN204556174U (en) * | 2015-04-20 | 2015-08-12 | 江苏宝亨新电气有限公司 | A kind of device of remote monitoring bushing shell for transformer sealing |
-
2015
- 2015-04-20 CN CN201510188701.7A patent/CN104748917A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202304897U (en) * | 2011-11-07 | 2012-07-04 | 福建亿榕信息技术有限公司 | On-line monitoring system for SF6 electrical equipment |
| US20140041738A1 (en) * | 2012-08-07 | 2014-02-13 | Afton Renee Coleman | Apparatus for fluid control device leak detection |
| CN104165735A (en) * | 2014-06-16 | 2014-11-26 | 浙江工业大学 | Complete equipment for airtightness test of gas cylinder |
| CN104198125A (en) * | 2014-09-10 | 2014-12-10 | 国家电网公司 | Sealing monitoring method for simulating sealing conditions of transformer bushing |
| CN204043858U (en) * | 2014-09-10 | 2014-12-24 | 国家电网公司 | A kind of sealing monitoring device of analogue transformer bobbin seal situation |
| CN204556174U (en) * | 2015-04-20 | 2015-08-12 | 江苏宝亨新电气有限公司 | A kind of device of remote monitoring bushing shell for transformer sealing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326153A (en) * | 2020-09-23 | 2021-02-05 | 国网江苏省电力有限公司电力科学研究院 | Transformer bushing sealing degree monitoring device and method thereof |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150701 |
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| WD01 | Invention patent application deemed withdrawn after publication |