CN107631832A - SF6 retracting device on-line monitoring systems - Google Patents
SF6 retracting device on-line monitoring systems Download PDFInfo
- Publication number
- CN107631832A CN107631832A CN201710902456.0A CN201710902456A CN107631832A CN 107631832 A CN107631832 A CN 107631832A CN 201710902456 A CN201710902456 A CN 201710902456A CN 107631832 A CN107631832 A CN 107631832A
- Authority
- CN
- China
- Prior art keywords
- circuit
- differential amplifier
- interface circuit
- power supply
- ethernet mac
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Liquid Crystal (AREA)
Abstract
The invention belongs to electric power apparatus examination engineering device technique field, more particularly to SF6During air insulating device disassembling overhaul gas reclaim, vacuumize, gas injection, specially SF6Retracting device on-line monitoring system.SF6Retracting device on-line monitoring system, including pressure sensor, differential amplifier circuit, processor unit, ethernet mac and phy interface circuit, LCD Interface circuit, FET output circuit, virtual serial port circuit and power supply unit, wherein pressure sensor is arranged on SF6On gas concentration unit, it is connected with differential amplifier circuit, differential amplifier circuit, ethernet mac and phy interface circuit, LCD Interface circuit, FET output circuit all connect with virtual serial port circuit with processor unit, and power supply unit is processor unit, ethernet mac and phy interface circuit, differential amplifier circuit power supply.The present invention can monitor SF in real time6Retracting device, brought great convenience to service work, while also reduce potential safety hazard.
Description
Technical field
The invention belongs to electric power apparatus examination engineering device technique field, more particularly to SF6During air insulating device disassembling overhaul
Gas is reclaimed, vacuumized, gas injection, specially SF6 retracting devices on-line monitoring system.
Background technology
At present, with the high speed development of global energy internet, SF6Air insulating device is in super-pressure, extra-high voltage open circuit
Generally used on device, and fully closed combined electric unit.SF6Air insulating device is due to manufacture mounting process and Climate and Environment Variation
Influence gas leakage or pressure can be caused to reduce, the direct stabilization of the safe for operation and system of threat equipment.For such a SF6Gas
Insulator arrangement disassembling overhaul operation, conventional use of SF6The easy oil return of gas concentration unit, automaticity is low, instrument and meter is smart
Degree is poor, needs direct surveillance.And need the recovery of a large amount of gases for combined electrical apparatus disassembling overhaul and vacuumize work, vacuumize into
The problems such as can degree will be related to turnover job be timely completed, and whether power failure plan needs change, usual field service personnel wheel
Stream monitoring SF6Retracting device, but larger inconvenience is so brought to service work, while add potential safety hazard.
The content of the invention
In order to solve the above problems, the invention provides SF6 retracting device on-line monitoring systems.
The present invention adopts the following technical scheme that realization：SF6 retracting device on-line monitoring systems, including pressure sensing
Device, differential amplifier circuit, processor unit, ethernet mac and phy interface circuit, LCD Interface circuit, FET output
Circuit, virtual serial port circuit and power supply unit, wherein pressure sensor are arranged on SF6On gas concentration unit, it puts with difference
Big circuit connection, differential amplifier circuit, ethernet mac and phy interface circuit, LCD Interface circuit, FET output electricity
Road all connects with virtual serial port circuit with processor unit, and power supply unit is processor unit, ethernet mac and phy interface electricity
Road, differential amplifier circuit power supply.
The present invention gathers the pressure on SF6 retracting devices by pressure sensor, is then input to by differential amplifier circuit
Processor unit, processor unit will be sent data at backstage after data processing by ethernet mac and phy interface circuit
Device is managed, can also be by data in liquid crystal screen display, if data mark is red when exceeding threshold value, the driving alarm of FET output circuit
Lamp, the warning lamp flicker of alarm Times, virtual serial port circuit may be connected to external USB interface, pressure form can be copied into flash disk.
The present invention can monitor SF in real time6Retracting device, brought great convenience to service work, while also reduce peace
Full hidden danger.
Brief description of the drawings
Fig. 1 is the theory diagram of the present invention.
Embodiment
SF6 retracting device on-line monitoring systems, including pressure sensor, differential amplifier circuit, processor unit, Ethernet
MAC and phy interface circuit, LCD Interface circuit, FET output circuit, virtual serial port circuit and power supply unit, wherein
Pressure sensor is arranged on SF6On gas concentration unit, it is connected with differential amplifier circuit, differential amplifier circuit, ethernet mac
All connect with phy interface circuit, LCD Interface circuit, FET output circuit and virtual serial port circuit with processor unit
Connect, power supply unit is processor unit, ethernet mac and phy interface circuit, differential amplifier circuit power supply.
When it is implemented, processor unit uses the STM32F46ZGT6 processors of ST Microelectronics, the processor
It is interior to be connected by 144 pins with external circuit.The embeded processor has up to 200Mhz working frequency.
STM32F746 is the high-performance processor for aiming at built-in field design, can reach the processing suitable with same platform CPU double-cores
Ability, but there is lower power consumption and caloric value, so both avoided the problems such as clamping stagnation is surprisingly crashed caused by apparatus overheat, again
Reduce more large area and open the damage of dust steam that radiator window is brought to circuit, the effective sulfur hexafluoride retracting device that improves exists
Line monitoring system reliability.
Differential amplifier circuit uses the non-track to track binary channels precision amplifiers of OPA2277, there is provided analog signal channel is surveyed
Amount.The input in the same direction of differential amplifier circuit is connected to pressure sensor by resistance, and reverse input end is connected to measuring basis
Voltage, output end by resistance be connected to reverse input end formed profound and negative feedbck, in order to balanced operational amplifier input again in the same direction
Input installs balance resistance additional over the ground.Amplifier output end carries out double limiting, prevents amplifier output voltage too high or exports negative electricity
Press break treat with device I/O mouths.
Ethernet mac and phy interface circuit use DP83848IVV ethernet macs and phy interface chip, and DP83848 connects
It is connected in the outside RMII buses of STM32F746 processors.Network signal indicator lamp is connected on the 26th, 28 pins, indicates respectively net
The connection status and communications status of network.Differential lines are connected on HR911105A magnetic transformer RJ45 connectors.Coordinate wireless network
Bridge reclaims the state with that can keep high speed UNICOM when vacuumizing with backstage central server at any time in gas, ensures that data are timely
It is sent to backstage.
LCD Interface circuit uses 0.5mm spacing FPC connectors, is connected by flexible PCB with liquid crystal display.Connection
Device is connected with 24 rgb interfaces of STM32F746 processors, receives the display signal that STM32F746 is sent.The liquid crystal connected
7 inch TFT liquid crystal displays may be selected in screen, resolution ratio 800*480, support 8 RGB colors to show.The present invention supports all kinds of common liquid
Crystal display, such as AT070TN83, AT090TN12 of Qun Chuan companies.
FET output circuit is using double N-MOS chips, there is provided high current digital output.Virtual serial port circuit uses
The FT232RL chips of FTDI companies, may be connected on external USB interface.
Claims (1)
1.SF6 retracting device on-line monitoring systems, it is characterised in that including pressure sensor, differential amplifier circuit, processor list
Member, ethernet mac and phy interface circuit, LCD Interface circuit, FET output circuit, virtual serial port circuit and power supply
Unit, wherein pressure sensor are arranged on SF6On gas concentration unit, it is connected with differential amplifier circuit, differential amplifier circuit,
Ethernet mac and phy interface circuit, LCD Interface circuit, FET output circuit and virtual serial port circuit are all and processing
Device unit connects, and power supply unit is processor unit, ethernet mac and phy interface circuit, differential amplifier circuit power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710902456.0A CN107631832A (en) | 2017-09-29 | 2017-09-29 | SF6 retracting device on-line monitoring systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710902456.0A CN107631832A (en) | 2017-09-29 | 2017-09-29 | SF6 retracting device on-line monitoring systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107631832A true CN107631832A (en) | 2018-01-26 |
Family
ID=61102807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710902456.0A Pending CN107631832A (en) | 2017-09-29 | 2017-09-29 | SF6 retracting device on-line monitoring systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107631832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748217A (en) * | 2020-12-14 | 2021-05-04 | 河南平高电气股份有限公司 | On-line detection device and gas recovery system using same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002037611A (en) * | 2000-07-26 | 2002-02-06 | Toshiba Corp | Gas recovery equipment and method of using it |
| CN201716303U (en) * | 2010-04-20 | 2011-01-19 | 常州爱特科技有限公司 | SF6 gas detecting and recovering device |
| CN202006063U (en) * | 2010-12-28 | 2011-10-12 | 西安亚能电气有限责任公司 | Gas recovery device for SF6 (sulfur fluoride) density relay calibrator |
| CN104162343A (en) * | 2014-07-25 | 2014-11-26 | 国家电网公司 | Onsite small-volume recovery device for sulfur hexafluoride electrical equipment |
| CN104763874A (en) * | 2015-04-15 | 2015-07-08 | 四川菲博斯科技有限责任公司 | SF6 gas recovering system |
| CN205480177U (en) * | 2016-02-06 | 2016-08-17 | 广州冠电电子科技有限公司 | Continuous recovery unit of portable sulfur hexafluoride tail gas |
| CN205634891U (en) * | 2016-03-18 | 2016-10-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A recovery unit for gaseous tail gas of SF6 |
| CN106989267A (en) * | 2017-03-31 | 2017-07-28 | 南京南瑞集团公司 | SF6 in-situs testers device for recovering tail gas and method for recovering tail gas |
-
2017
- 2017-09-29 CN CN201710902456.0A patent/CN107631832A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002037611A (en) * | 2000-07-26 | 2002-02-06 | Toshiba Corp | Gas recovery equipment and method of using it |
| CN201716303U (en) * | 2010-04-20 | 2011-01-19 | 常州爱特科技有限公司 | SF6 gas detecting and recovering device |
| CN202006063U (en) * | 2010-12-28 | 2011-10-12 | 西安亚能电气有限责任公司 | Gas recovery device for SF6 (sulfur fluoride) density relay calibrator |
| CN104162343A (en) * | 2014-07-25 | 2014-11-26 | 国家电网公司 | Onsite small-volume recovery device for sulfur hexafluoride electrical equipment |
| CN104763874A (en) * | 2015-04-15 | 2015-07-08 | 四川菲博斯科技有限责任公司 | SF6 gas recovering system |
| CN205480177U (en) * | 2016-02-06 | 2016-08-17 | 广州冠电电子科技有限公司 | Continuous recovery unit of portable sulfur hexafluoride tail gas |
| CN205634891U (en) * | 2016-03-18 | 2016-10-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A recovery unit for gaseous tail gas of SF6 |
| CN106989267A (en) * | 2017-03-31 | 2017-07-28 | 南京南瑞集团公司 | SF6 in-situs testers device for recovering tail gas and method for recovering tail gas |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748217A (en) * | 2020-12-14 | 2021-05-04 | 河南平高电气股份有限公司 | On-line detection device and gas recovery system using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201984124U (en) | Intelligent online monitoring device for dry type transformer | |
| CN107340422A (en) | Voltage and current signal sensor circuit | |
| CN107631832A (en) | SF6 retracting device on-line monitoring systems | |
| CN206301011U (en) | A kind of off-line type DC earthing quickly searches instrument | |
| CN202903955U (en) | Built-in ultrahigh frequency partial discharge sensor | |
| CN206114756U (en) | Weak electrical engineering safety inspection device | |
| CN107170188A (en) | A kind of adjustable acousto-optic alarming device and its application method for DCS system | |
| CN207486449U (en) | One kind can be used for laboratory airline pressure on-line intelligence monitoring device | |
| CN206946659U (en) | A kind of adjustable acousto-optic alarming device for DCS system | |
| CN203433507U (en) | A fault detection device for a computer mainboard | |
| CN204374269U (en) | A kind of multifunctional electric meter | |
| CN214585750U (en) | Detection and analysis device of relay protection tester | |
| CN205334667U (en) | Electric fire monitors detector based on LIN bus | |
| CN115015699A (en) | Insulation fault early warning on-line monitoring system applied to medium-voltage switch cabinet | |
| CN204129140U (en) | Electrical leakage, discharge monitor for lightning arrester | |
| CN205665009U (en) | Digital engine test control test bench control system based on CAN bus | |
| CN106532941A (en) | High voltage switch cabinet automatic monitoring system | |
| CN203204763U (en) | Electrical fire warning device | |
| CN204374283U (en) | A kind of digital display voltmeter | |
| CN207007924U (en) | Voltage and current signal sensor circuit | |
| CN203350333U (en) | DC (direct current) system alternating current fault detection apparatus | |
| CN203117346U (en) | Insulation fault locator for medical isolation power supply system | |
| CN110618726A (en) | High-precision adjustable power supply monitoring circuit system and method | |
| CN109782084A (en) | A kind of intelligent inhibition cabinet control system | |
| CN203673019U (en) | Conversion interface board and communication wiring harness testing device comprising same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180126 |