CN203825781U - Self-calibration type sulfur hexafluoride gas leakage monitoring alarm device in GIS chamber - Google Patents
Self-calibration type sulfur hexafluoride gas leakage monitoring alarm device in GIS chamber Download PDFInfo
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- CN203825781U CN203825781U CN201420233381.3U CN201420233381U CN203825781U CN 203825781 U CN203825781 U CN 203825781U CN 201420233381 U CN201420233381 U CN 201420233381U CN 203825781 U CN203825781 U CN 203825781U
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Abstract
The utility model discloses a self-calibration type sulfur hexafluoride gas leakage monitoring alarm device in a GIS chamber, comprising an online sulfur hexafluoride gas monitoring host, a gas monitoring sensing unit, a gas-electric connector, a draught fan controller, a human body infrared switch, an audible-and-visual alarm and a GPRS transmission module; a central processor and a remote control center are connected remotely through the GPRS transmission module; when the self-calibration type sulfur hexafluoride gas leakage monitoring alarm device is remotely trigged, the central processor of the sulfur hexafluoride gas monitoring host is controlled to transmit instructions; the sulfur hexafluoride gas leakage condition in the GIS chamber can be detected through the gas monitoring sensing unit; when the calibration of the gas monitoring sensing unit is being performed, the remote control center transmits self-examination instructions to the central processor; the central processor transmits the signal to the relay and controls an electric ball valve to perform calibration on sulfur hexafluoride and oxygen in series, and through the calibration, the gas monitoring sensing unit overcomes the zero drift problem and guarantees the detection accuracy.
Description
Technical field
The utility model relates to GIS room sulfur hexafluoride Leakage Gas detection field, relates in particular to a kind of for self-calibration GIS room sulfur hexafluoride Leakage Gas monitoring alarm.
Background technology
SF
6gas, with insulation and the arc extinction performance of its excellence, is widely used on the GIS equipment of urban distribution network transformer station.But, owing to being subject to the impact of the factor such as irrationality and material aging of difference, installation of workmanship, make SF
6electrical equipment easily leaks, and the SF leaking out
6gas and analyte thereof gather to indoor low layer space, cause the situation of local anoxic, meanwhile, include multiple toxic gas composition in analyte, have formed serious danger to entering indoor staff's life security.
The relevant criterion of China and behavior code clearly propose SF
6the leakage monitoring regulation of gas.According to the relevant regulations such as " electric industry safety regulations ", " sulfur hexafluoride electrical equipment operation, test and maintainer's security protection detailed rules and regulations " and " requirement of operation site surrounding gas detecting and alarming instrument current techique ", at indoor SF
6in electrical equipment workplace, online SF must be installed
6-O
2leak supervision alarm, SF in Real-Time Monitoring environment
6the content of G&O, as SF in environment
6gas content (the SF that exceeds standard
6gas concentration > 1000 μ L/L) or when anoxic (oxygen concentration < 18%), monitoring alarm instrument can carry out sound and light alarm immediately, to remind staff to take safety measures, meanwhile, system automatically starts air discharging facility and reduces SF in surrounding air
6gas content, guarantee enters office work personnel's personal safety.
Because China's relevant criterion and behavior code have clearly proposed SF
6the leakage monitoring of gas, so in China's power industry, sulfur hexafluoride gas is installed in a large amount of totally enclosed type combined switch GIS equipment and has been leaked on-Line Monitor Device or system, but, sulfur hexafluoride gas leakage on-Line Monitor Device in the online GIS equipment using or system are owing to periodically not safeguarding, make the actual operating state that a large amount of sulfur hexafluoride gas leak on-Line Monitor Device or system occur problems, can not monitor accurately GIS equipment.In to the generaI investigation process of sulfur hexafluoride gas leakage on-Line Monitor Device or system, due to SF
6the quantity of leakage monitoring point sensing unit is huge, and existing testing tool equipment can only detect by single-point one by one, so, cause the generaI investigation cycle longer.For example Shandong Electric Power Group in 2011 has spent one-year age nearly and has just completed the selective examination work of whole province; Guangdong Electric Power company adopts Site Detection scheme used times two wheat harvesting period to complete SF
6the census operations of leakage alarm system.So long generaI investigation sense cycle, need to expend a large amount of manpowers, meanwhile, also needs to expend a large amount of funds and meet the demand of checkout equipment, for census operations brings very large trouble.
Utility model content
The purpose of this utility model is to provide a kind of self-calibration GIS room sulfur hexafluoride Leakage Gas monitoring alarm, and this system can realize each point SF
6the self calibration of gas sensing detecting unit and independently correction, better meet field monitoring, verification demand, ensures the safety of operating environment.
The technical solution adopted in the utility model is:
A kind of self-calibration GIS room sulfur hexafluoride Leakage Gas monitoring alarm, comprise online sulfur hexafluoride gas leakage monitoring main frame, gas-monitoring sensing unit, pneumoelectric connector and audible-visual annunciator, online sulfur hexafluoride gas leakage monitoring main frame connects gas-monitoring sensing unit by pneumoelectric connector, and online sulfur hexafluoride gas leakage monitoring main frame also connects audible-visual annunciator; Online sulfur hexafluoride gas leakage monitoring main frame comprises central processing unit and self calibration gas circuit, the Control end of central processing unit connects relay coil by control relay circuit, the warning end of central processing unit connects audible-visual annunciator, and the power end of central processing unit is used for connecting power supply; Self calibration gas circuit comprises sulfur hexafluoride gas conveying gas circuit and standard oxygen conveying gas road, sulfur hexafluoride gas carries gas circuit to comprise sulfur hexafluoride gas bottle, and the outlet of sulfur hexafluoride gas bottle connects the first pressure transducer, decompressor, electrical ball valve the first port, the second pressure transducer successively by flue; Standard oxygen conveying gas road comprises air pump, and air enters by the import of air pump, and gas delivery side of pump connects the import of filtrator by flue, and the outlet of filtrator connects the second port of electrical ball valve; The first contact of relay is serially connected with in the feed circuit of air pump, and the second contact of relay is connected to the electric actuator control end of electrical ball valve; The signal output part of the first pressure transducer and the second pressure transducer is connected the signal input part of central processing unit by analog-to-digital conversion module.
Described central processing unit also connects clock module, memory module and display module.
Described gas-monitoring sensing unit adopts multiple diffusion type gas monitoring sensors, and each diffusion type gas monitoring sensor connects respectively a pneumoelectric connector, all pneumoelectric connector serial connections.
Described pneumoelectric connector comprises pneumoelectric pipe, pneumoelectric pipe is provided with terminal box, terminal box is provided with gateway, three pneumoelectric roads, in terminal box, be provided with a three-way connection and three connection terminals, three interfaces of three-way connection are connected with respectively a gas quick connector, in one of them gas quick connector, be embedded with flow control valve, every two connection terminals in three connection terminals are connected by inner cable line respectively; In terminal box, be provided with the first pneumoelectric joint at gateway place, each pneumoelectric road, in three the first pneumoelectric joints, be all equipped with the gentle pipe of dispatch from foreign news agency cable, every group of equal correspondence of dispatch from foreign news agency cable is connected with a connection terminal, and three tracheae the inners are plugged in respectively in a gas quick connector; A tracheae and one group of dispatch from foreign news agency cable that flow control valve is controlled are connected with the diffusion type gas monitoring sensor that is positioned at terminal box outside; Another two tracheaes and two groups of dispatch from foreign news agency cables are connected respectively on pneumoelectric pipe; In described terminal box, be provided with installing plate by bolt, three-way connection and three connection terminals are all located on installing plate, and the sidepiece of terminal box is provided with otic placode, offers mounting hole on otic placode.
Described diffusion type gas monitoring sensor comprises housing, in housing, be provided with control device, sulfur hexafluoride infrared sensor and oxygen sensor, housing is provided with the second pneumoelectric joint extending in housing, the second pneumoelectric joint is connected with the air intake opening of sulfur hexafluoride infrared sensor and oxygen sensor respectively by tracheae, the second pneumoelectric joint is connected with control device with total data signal wire by power transmission line, and the signaling interface of control device is connected with the signaling interface of sulfur hexafluoride infrared sensor and oxygen sensor respectively by a data signal line.
Described control device comprises control panel, control panel is provided with CPU module, RS-485 module and power module, the second pneumoelectric joint is connected with power module by power transmission line, power module is CPU module for power supply, CPU module is connected with the signaling interface of sulfur hexafluoride infrared sensor and oxygen sensor respectively by a data signal line, and the signal input output end of CPU module is connected with total data signal wire by RS-485 module.
The utility model detects GIS room sulfur hexafluoride Leakage Gas situation by gas-monitoring sensing unit, when GIS room sulfur hexafluoride gas exceeds standard or when anoxic, central processing unit control audible-visual annunciator carries out warning reminding; When whether normal needs detect gas-monitoring sensing unit time, central processing unit is to relay transmitted signal, control electrical ball valve and the action of the first pressure transducer, sulfur hexafluoride gas bottle is carried sulfur hexafluoride gas to gas-monitoring sensing unit, if the data that gas-monitoring sensing unit detects are sulfur hexafluoride gas concentration value, gas-monitoring sensing unit is working properly, otherwise, undesired; While detecting oxygen, principle is monitored with sulfur hexafluoride gas; Gas-monitoring sensing unit, through calibration, overcomes the Zero drift in main amplifier of sensing unit, ensures the accuracy detecting.
Brief description of the drawings
Fig. 1 is system chart of the present utility model;
Fig. 2 is online sulfur hexafluoride gas leakage monitoring host circuit theory diagram of the present utility model;
Fig. 3 is self calibration gas circuit connection diagram of the present utility model;
Fig. 4 is pneumoelectric connector construction schematic diagram of the present utility model;
Fig. 5 is the structural representation of gas-monitoring sensor of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises online sulfur hexafluoride gas leakage monitoring main frame, gas-monitoring sensing unit, pneumoelectric connector and audible-visual annunciator, online sulfur hexafluoride gas leakage monitoring main frame connects gas-monitoring sensing unit by pneumoelectric connector, and online sulfur hexafluoride gas leakage monitoring main frame also connects audible-visual annunciator.
As shown in Figure 2, online sulfur hexafluoride gas leakage monitoring main frame comprises central processing unit and self calibration gas circuit, central processing unit is as data sampling and the processing mechanism of system, and the data of controlling external unit are carried, the Control end of central processing unit is by control relay circuit control linkage relay coil, make relay coil obtain electric or dead electricity, thereby control contact action; The warning end of central processing unit connects audible-visual annunciator, when GIS room sulfur hexafluoride gas concentration exceeds standard or when anoxic, starts audible-visual annunciator and report to the police; The power end of central processing unit is used for connecting power supply, and power supply is whole system power supply.
As shown in Figure 3, self calibration gas circuit comprises sulfur hexafluoride gas conveying gas circuit and standard oxygen conveying gas road, sulfur hexafluoride gas carries gas circuit to comprise sulfur hexafluoride gas bottle, the outlet of sulfur hexafluoride gas bottle connects the first pressure transducer, decompressor, electrical ball valve the first port, the second pressure transducer successively by flue, standard oxygen conveying gas road comprises air pump, air is entered by the import of air pump, gas delivery side of pump connects the import of filtrator by flue, the outlet of filtrator connects the second port of electrical ball valve; The first contact of relay is serially connected with in the feed circuit of air pump, controls the power-off of air pump or obtains electric; The second contact of relay is connected to the electric actuator control end of electrical ball valve, controls the rotation of electrical ball valve, selects gas output or the gas circuit of air output at zero point to switch; The signal output part of the first pressure transducer and the second pressure transducer is connected the signal input part of central processing unit by analog-to-digital conversion module, what pressure transducer detected is simulating signal, simulating signal is converted to digital signal and sends to central processing unit, pressure transducer is for monitoring the flow that gas provides, in the time that needs carry out automatic calibration, need to meet the gas flow of gas-monitoring sensor needs, the numerical value showing by pressure transducer is exactly controlled the flow of gas, make the gas flow can be not very little or too much, impact detects quality.
Gas-monitoring sensing unit in the utility model comprises multiple diffusion type gas monitoring sensors, and each diffusion type gas monitoring sensor connects respectively a pneumoelectric connector, all pneumoelectric connector serial connections; As shown in Figure 4, pneumoelectric connector comprises pneumoelectric pipe 1, pneumoelectric pipe 1 is provided with terminal box 2, terminal box 2 is provided with gateway, three pneumoelectric roads, in terminal box 2, be provided with a three-way connection 3 and three connection terminals 4, three interfaces of three-way connection 3 are connected with respectively a gas quick connector 5, and every two connection terminals 4 that are embedded with in one of them gas quick connector 5 in 6, three connection terminals 4 of flow control valve are connected by inner cable line 7 respectively; In terminal box 2, be provided with the first pneumoelectric joint 8 at gateway place, each pneumoelectric road, three interior dispatch from foreign news agency cable 9 and tracheaes 10 of being all equipped with of the first pneumoelectric joint 8, every group of equal correspondence of dispatch from foreign news agency cable 9 is connected with a connection terminal 4, and three tracheae 10 the inners are plugged in respectively in a gas quick connector 5; A tracheae 10 and one group of dispatch from foreign news agency cable 9 that flow control valve 6 is controlled are connected with the diffusion type gas monitoring sensor that is positioned at terminal box 2 outsides; Another two tracheaes 10 and two groups of dispatch from foreign news agency cables 9 are connected respectively on pneumoelectric pipe 1; In described terminal box 2, be provided with installing plate 22 by bolt, three-way connection 3 and three connection terminals 4 are all located on installing plate 22, and the sidepiece of terminal box 2 is provided with otic placode 23, offers mounting hole 24 on otic placode 23.
Diffusion type gas monitoring sensor comprises housing 11, in housing 11, be provided with control device, sulfur hexafluoride infrared sensor 13 and oxygen sensor 14, control device comprises control panel 18, control panel 18 is provided with CPU module 19, RS-485 module 20 and power module 21, the second pneumoelectric joint 12 is connected with power module 21 by power transmission line 15, and power module 21 is powered for CPU module 19.Housing 11 is provided with the second pneumoelectric joint 12 extending in housing 11, the second pneumoelectric joint 12 is connected with the air intake opening of sulfur hexafluoride infrared sensor 13 and oxygen sensor 14 respectively by tracheae 10, the second pneumoelectric joint 12 is connected with the signal input output end of the CPU module 19 in control device by RS-485 module 20 with total data signal wire 16 by power transmission line 15, and CPU module 19 is connected with the signaling interface of sulfur hexafluoride infrared sensor 13 and oxygen sensor 14 respectively by a data signal line 17.
Central processing unit also connects clock module, memory module, display module.Clock module can provide real-time clock data, and central processing unit reads clock data and then is presented on main interface, can be for checking and fixed cycle operator; Memory module can storage system alarm logging, the data such as system parameters; Display module can be in liquid crystal display system on screen data etc.
Illustrate principle of work of the present utility model below in conjunction with accompanying drawing:
Online sulfur hexafluoride gas leakage monitoring main frame connects with n corresponding diffusion type gas detecting sensor by n pneumoelectric connector, diffusion type gas monitoring sensor is arranged on to each indoor corner of GIS, multi-faceted, multi-angle carry out sulfur hexafluoride gas Leak Detection.Online sulfur hexafluoride gas leakage monitoring main frame inside is provided with self calibration gas circuit, and self calibration gas circuit comprises sulfur hexafluoride gas conveying gas circuit and standard oxygen conveying gas road.Online sulfur hexafluoride gas leakage monitoring main frame Leak Detection is carried out in real time, central processing unit sends sense command by inner cable line 7 electric systems in pneumoelectric connector to the CPU module 19 in diffusion type gas monitoring sensor, CPU module 19 sends to order sulfur hexafluoride infrared sensor 13 and the oxygen sensor 14 in diffusion type gas monitoring sensor again, sulfur hexafluoride infrared sensor 13 and oxygen sensor 14 detect and by the data transmission detecting to CPU module 19, CPU module 19 is carried out the storage of data, process, further the concentration value detecting is sent to central processing unit, during in the time that sulfur hexafluoride gas detectable concentration value exceeds standard or in anaerobic condition, central processing unit holds startup audible-visual annunciator to warn by warning, simultaneously, the memory module storage of reporting to the police that central processing unit connects, and show in LCDs.Central processing unit and CPU module adopt existing mature technology to the processing of data, do not repeat them here.
In the time starting online sulfur hexafluoride gas leakage monitoring main frame self calibration, central processing unit receives order, first carry out sulfur hexafluoride gas verification, central processing unit control the second contact, and then control electrical ball valve turns to sulfur hexafluoride gas to carry gas circuit, make sulfur hexafluoride gas carry gas circuit conducting, the standard sulfur hexafluoride gas of sulfur hexafluoride mark gas cylinder internal is successively by the first pressure transducer, decompressor, electrical ball valve, the second pressure transducer delivery outlet enters by tracheae 10 in the three-way connection 3 of terminal box inside, a gas quick connector 5 that is provided with flow control valve 6 through three-way connection 3 again accesses diffusion type gas monitoring sensor housing 11 inside, wherein tracheae 10 is connected with the air intake opening of sulfur hexafluoride infrared sensor 13 and oxygen sensor 14 respectively.Because needs are calibrated each diffusion type gas monitoring sensor, so, terminal box 2 adopts three-port structure, can on pneumoelectric pipe 1, walk abreast multiple terminal boxes 2 are set like this, diffusion type gas monitoring sensor of a port arrangement of each terminal box 2, due to the regulating action of flow control valve 6 to gas flow, the flow that can ensure to input each diffusion type gas monitoring sensor be meet requirement of experiment or standard-required, the mounting hole 24 on otic placode 23 is for fixedly mounting terminal box 2.When calibration, flow through gas circuit in the second pneumoelectric joint 12 entering in sulfur hexafluoride infrared sensor 13 by tracheae 10 of sulfur hexafluoride calibrating gas, calibrates; Wait for after certain hour, after the concentration value balance that sulfur hexafluoride infrared sensor 13 detects, this detection numerical value is stored, if sulfur hexafluoride infrared sensor 13 drifts about, the detected value that is detectable concentration value and calibrating gas is different, and after detection, system can write sulfur hexafluoride infrared sensor 13 by the concentration signal of calibrating gas automatically, the calibration of again drifting about, completes automatic calibration.
In the time that needs carry out oxygen gas calibration, central processing unit control the second contact, and then control electrical ball valve turns to oxygen gas to carry gas circuit, make oxygen gas carry gas circuit conducting, gas flow is: air enters by the import of air pump, flowing to filtrator through air pump filters, flow to again electrical ball valve, enter by tracheae 10 in the three-way connection 3 of terminal box inside through the second pressure transducer delivery outlet again, access diffusion type gas monitoring sensor housing 11 inside at a gas quick connector 5 that is provided with flow control valve 6 through three-way connection 3, calibrating principle is as the principle of sulfur hexafluoride gas calibration and rectification, do not repeat them here.Finally, utilize the emptying switch of adjusting of electrical ball valve connection, carry out the emptying process of tracheae, convenient calibration next time is used, raising accuracy.Sulfur hexafluoride gas bottle, pressure transducer, decompressor, electrical ball valve, air pump, filtrator, three-way connection 3, connection terminal 4, gas quick connector 5, flow control valve 6, the first pneumoelectric joint 8, sulfur hexafluoride infrared sensor 13, oxygen sensor 14, the second pneumoelectric joint 12, CPU module 19, RS-485 module 20 and power module 21 in the middle of the utility model are existing mature technology, and concrete structure repeats no more.
Claims (6)
1. a self-calibration GIS room sulfur hexafluoride Leakage Gas monitoring alarm, it is characterized in that: comprise online sulfur hexafluoride gas leakage monitoring main frame, gas-monitoring sensing unit, pneumoelectric connector and audible-visual annunciator, online sulfur hexafluoride gas leakage monitoring main frame connects gas-monitoring sensing unit by pneumoelectric connector, and online sulfur hexafluoride gas leakage monitoring main frame also connects audible-visual annunciator; Online sulfur hexafluoride gas leakage monitoring main frame comprises central processing unit and self calibration gas circuit, the Control end of central processing unit connects relay coil by control relay circuit, the warning end of central processing unit connects audible-visual annunciator, and the power end of central processing unit is used for connecting power supply; Self calibration gas circuit comprises sulfur hexafluoride gas conveying gas circuit and standard oxygen conveying gas road, sulfur hexafluoride gas carries gas circuit to comprise sulfur hexafluoride gas bottle, and the outlet of sulfur hexafluoride gas bottle connects the first pressure transducer, decompressor, electrical ball valve the first port, the second pressure transducer successively by flue; Standard oxygen conveying gas road comprises air pump, and air enters by the import of air pump, and gas delivery side of pump connects the import of filtrator by flue, and the outlet of filtrator connects the second port of electrical ball valve; The first contact of relay is serially connected with in the feed circuit of air pump, and the second contact of relay is connected to the electric actuator control end of electrical ball valve; The signal output part of the first pressure transducer and the second pressure transducer is connected the signal input part of central processing unit by analog-to-digital conversion module.
2. self-calibration GIS room sulfur hexafluoride Leakage Gas monitoring alarm according to claim 1, is characterized in that: described central processing unit also connects clock module, memory module and display module.
3. self-calibration GIS room sulfur hexafluoride Leakage Gas monitoring alarm according to claim 2, it is characterized in that: described gas-monitoring sensing unit adopts multiple diffusion type gas monitoring sensors, each diffusion type gas monitoring sensor connects respectively a pneumoelectric connector, all pneumoelectric connector serial connections.
4. self-calibration GIS room sulfur hexafluoride Leakage Gas monitoring alarm according to claim 3, it is characterized in that: described pneumoelectric connector comprises pneumoelectric pipe, pneumoelectric pipe is provided with terminal box, terminal box is provided with gateway, three pneumoelectric roads, in terminal box, be provided with a three-way connection and three connection terminals, three interfaces of three-way connection are connected with respectively a gas quick connector, in one of them gas quick connector, be embedded with flow control valve, every two connection terminals in three connection terminals are connected by inner cable line respectively; In terminal box, be provided with the first pneumoelectric joint at gateway place, each pneumoelectric road, in three the first pneumoelectric joints, be all equipped with the gentle pipe of dispatch from foreign news agency cable, every group of equal correspondence of dispatch from foreign news agency cable is connected with a connection terminal, and three tracheae the inners are plugged in respectively in a gas quick connector; A tracheae and one group of dispatch from foreign news agency cable that flow control valve is controlled are connected with the diffusion type gas monitoring sensor that is positioned at terminal box outside; Another two tracheaes and two groups of dispatch from foreign news agency cables are connected respectively on pneumoelectric pipe; In described terminal box, be provided with installing plate by bolt, three-way connection and three connection terminals are all located on installing plate, and the sidepiece of terminal box is provided with otic placode, offers mounting hole on otic placode.
5. self-calibration GIS room sulfur hexafluoride Leakage Gas monitoring alarm according to claim 4, it is characterized in that: described diffusion type gas monitoring sensor comprises housing, in housing, be provided with control device, sulfur hexafluoride infrared sensor and oxygen sensor, housing is provided with the second pneumoelectric joint extending in housing, the second pneumoelectric joint is connected with the air intake opening of sulfur hexafluoride infrared sensor and oxygen sensor respectively by tracheae, the second pneumoelectric joint is connected with control device with total data signal wire by power transmission line, the signaling interface of control device is connected with the signaling interface of sulfur hexafluoride infrared sensor and oxygen sensor respectively by a data signal line.
6. self-calibration GIS room sulfur hexafluoride Leakage Gas monitoring alarm according to claim 5, it is characterized in that: described control device comprises control panel, control panel is provided with CPU module, RS-485 module and power module, the second pneumoelectric joint is connected with power module by power transmission line, power module is CPU module for power supply, CPU module is connected with the signaling interface of sulfur hexafluoride infrared sensor and oxygen sensor respectively by a data signal line, and the signal input output end of CPU module is connected with total data signal wire by RS-485 module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420233381.3U CN203825781U (en) | 2014-05-08 | 2014-05-08 | Self-calibration type sulfur hexafluoride gas leakage monitoring alarm device in GIS chamber |
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|---|---|---|---|
| CN201420233381.3U CN203825781U (en) | 2014-05-08 | 2014-05-08 | Self-calibration type sulfur hexafluoride gas leakage monitoring alarm device in GIS chamber |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852322A (en) * | 2015-05-18 | 2015-08-19 | 上虞市舜兴电力有限公司 | Pressure light warning device of SF6 device |
| CN105139587A (en) * | 2015-07-23 | 2015-12-09 | 江南大学 | Gas detection alarm device having information fusion and remote short message function |
| CN105183021A (en) * | 2015-09-18 | 2015-12-23 | 四川菲博斯科技有限责任公司 | Sulfur hexafluoride gas leakage monitoring system |
| CN108362840A (en) * | 2018-04-20 | 2018-08-03 | 天津澜禹笙环保科技有限公司 | Online detection device based on environment malodor monitoring electronic nose remote reverse control |
| CN108413258A (en) * | 2018-04-28 | 2018-08-17 | 广东电网有限责任公司 | Air pressure monitor device and the micro- water treatment system of SF6 equipment |
-
2014
- 2014-05-08 CN CN201420233381.3U patent/CN203825781U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852322A (en) * | 2015-05-18 | 2015-08-19 | 上虞市舜兴电力有限公司 | Pressure light warning device of SF6 device |
| CN104852322B (en) * | 2015-05-18 | 2017-03-22 | 上虞市舜兴电力有限公司 | Pressure light warning device of SF6 device |
| CN105139587A (en) * | 2015-07-23 | 2015-12-09 | 江南大学 | Gas detection alarm device having information fusion and remote short message function |
| CN105183021A (en) * | 2015-09-18 | 2015-12-23 | 四川菲博斯科技有限责任公司 | Sulfur hexafluoride gas leakage monitoring system |
| CN105183021B (en) * | 2015-09-18 | 2018-03-06 | 四川菲博斯科技有限责任公司 | Sulfur hexafluoride gas leakage monitoring system |
| CN108362840A (en) * | 2018-04-20 | 2018-08-03 | 天津澜禹笙环保科技有限公司 | Online detection device based on environment malodor monitoring electronic nose remote reverse control |
| CN108413258A (en) * | 2018-04-28 | 2018-08-17 | 广东电网有限责任公司 | Air pressure monitor device and the micro- water treatment system of SF6 equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20190508 |